/* roulang page: index */
/* ========== :root 设计变量 ========== */
        :root {
            --primary: #7C5CFC;
            --primary-dark: #5A3FD4;
            --primary-light: #9B84FF;
            --secondary: #F5A623;
            --secondary-light: #FFC107;
            --accent-green: #06D6A0;
            --bg-dark: #0B1424;
            --bg-card: rgba(255,255,255,0.05);
            --bg-glass: rgba(255,255,255,0.04);
            --border-glass: rgba(255,255,255,0.08);
            --border-hover: rgba(124,92,252,0.3);
            --text-white: #FFFFFF;
            --text-light: #E0E6F6;
            --text-muted: #9CA3BF;
            --text-dim: #6B7A9F;
            --text-nav: #C8D0E8;
            --text-blue: #B0C4FF;
            --font-family: "PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-glow: 0 0 24px rgba(124,92,252,0.4), 0 0 48px rgba(124,92,252,0.15);
            --shadow-glow-strong: 0 0 40px rgba(124,92,252,0.6), 0 0 80px rgba(124,92,252,0.25);
            --transition: all 0.3s ease;
            --max-width: 1280px;
            --nav-height: 72px;
        }

        /* ========== Reset & Base ========== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-family);
            font-weight: 400;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            background-image: radial-gradient(ellipse at 50% 0%, rgba(124,92,252,0.08) 0%, transparent 70%);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover, a:focus {
            color: var(--text-white);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-white);
        }

        /* ========== 容器 & 栅格 ========== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--narrow {
            max-width: 800px;
        }
        .row {
            display: flex;
            flex-wrap: wrap;
            margin: 0 -12px;
        }
        .col {
            flex: 1;
            padding: 0 12px;
            min-width: 0;
        }
        .col-12 { flex: 0 0 100%; padding: 0 12px; }
        .col-6 { flex: 0 0 50%; padding: 0 12px; }
        .col-4 { flex: 0 0 33.3333%; padding: 0 12px; }
        .col-3 { flex: 0 0 25%; padding: 0 12px; }

        /* ========== 工具类 ========== */
        .text-center { text-align: center; }
        .text-left { text-align: left; }
        .text-right { text-align: right; }
        .text-white { color: var(--text-white); }
        .text-muted { color: var(--text-muted); }
        .text-dim { color: var(--text-dim); }
        .text-primary { color: var(--primary); }
        .text-secondary { color: var(--secondary); }
        .text-accent { color: var(--accent-green); }
        .font-bold { font-weight: 700; }
        .font-medium { font-weight: 600; }
        .mb-8 { margin-bottom: 8px; }
        .mb-12 { margin-bottom: 12px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-20 { margin-bottom: 20px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .mb-40 { margin-bottom: 40px; }
        .mb-48 { margin-bottom: 48px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mt-40 { margin-top: 40px; }
        .mt-48 { margin-top: 48px; }
        .pt-16 { padding-top: 16px; }
        .pt-24 { padding-top: 24px; }
        .pt-32 { padding-top: 32px; }
        .pt-48 { padding-top: 48px; }
        .pb-16 { padding-bottom: 16px; }
        .pb-24 { padding-bottom: 24px; }
        .pb-32 { padding-bottom: 32px; }
        .pb-48 { padding-bottom: 48px; }
        .pr-16 { padding-right: 16px; }
        .pl-16 { padding-left: 16px; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }
        .items-start { align-items: flex-start; }
        .justify-center { justify-content: center; }
        .justify-between { justify-content: space-between; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .gap-16 { gap: 16px; }
        .gap-20 { gap: 20px; }
        .gap-24 { gap: 24px; }
        .gap-32 { gap: 32px; }
        .w-full { width: 100%; }
        .relative { position: relative; }
        .overflow-hidden { overflow: hidden; }
        .rounded-lg { border-radius: var(--radius-lg); }
        .rounded-md { border-radius: var(--radius-md); }
        .rounded-sm { border-radius: var(--radius-sm); }

        /* ========== 导航 ========== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(11,20,36,0.5);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .header.scrolled {
            background: rgba(11,20,36,0.95);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            box-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .header__logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .header__logo .logo-char {
            color: var(--secondary);
        }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .header__nav a {
            font-size: 15px;
            color: var(--text-nav);
            font-weight: 400;
            position: relative;
            padding: 4px 0;
            transition: var(--transition);
        }
        .header__nav a:hover,
        .header__nav a:focus {
            color: var(--text-white);
        }
        .header__nav a.active {
            color: var(--text-white);
        }
        .header__nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header__actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header__search {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-md);
            padding: 8px 16px;
            color: var(--text-white);
            font-size: 14px;
            width: 180px;
            transition: var(--transition);
        }
        .header__search::placeholder {
            color: var(--text-dim);
        }
        .header__search:focus {
            border-color: var(--primary);
            background: rgba(255,255,255,0.12);
        }
        .btn--nav-cta {
            background: var(--secondary);
            color: #0B1424;
            font-weight: 600;
            font-size: 14px;
            padding: 8px 20px;
            border-radius: var(--radius-md);
            transition: var(--transition);
            box-shadow: 0 0 16px rgba(245,166,35,0.25);
            white-space: nowrap;
        }
        .btn--nav-cta:hover {
            background: var(--secondary-light);
            box-shadow: 0 0 28px rgba(245,166,35,0.4);
            color: #0B1424;
            transform: translateY(-1px);
        }
        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: var(--transition);
            transform-origin: center;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端导航面板 */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(11,20,36,0.98);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            padding: 32px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 24px;
            overflow-y: auto;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            font-size: 18px;
            color: var(--text-nav);
            font-weight: 500;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .mobile-nav a.active {
            color: var(--text-white);
        }
        .mobile-nav .btn--nav-cta {
            align-self: flex-start;
            font-size: 16px;
            padding: 12px 32px;
        }

        /* ========== Hero 首屏 ========== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, rgba(11,20,36,0.85), rgba(124,92,252,0.4)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(124,92,252,0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero__content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
        }
        .hero__text {
            flex: 0 0 55%;
            max-width: 680px;
        }
        .hero__title {
            font-size: 56px;
            font-weight: 700;
            color: var(--text-white);
            text-shadow: 0 4px 20px rgba(0,0,0,0.3);
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .hero__subtitle {
            font-size: 18px;
            color: var(--text-blue);
            font-weight: 400;
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero__cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: var(--secondary);
            color: #0B1424;
            font-weight: 600;
            font-size: 18px;
            padding: 16px 36px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-glow);
            transition: var(--transition);
            border: none;
        }
        .hero__cta:hover {
            background: var(--secondary-light);
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #0B1424;
        }
        .hero__cta i {
            font-size: 18px;
        }
        .hero__image {
            flex: 0 0 40%;
            max-width: 480px;
            filter: drop-shadow(0 0 40px rgba(124,92,252,0.3));
        }
        .hero__image img {
            width: 100%;
            border-radius: var(--radius-lg);
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: 80px 0;
        }
        .section__header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section__title {
            font-size: 40px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section__title::before {
            content: '';
            display: block;
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0 auto 16px;
        }
        .section__desc {
            font-size: 16px;
            color: var(--text-blue);
            max-width: 640px;
            margin: 0 auto;
        }
        .section--dark {
            background: rgba(255,255,255,0.02);
        }
        .section--gradient {
            background: linear-gradient(135deg, #0B1424, #1A0A3E);
        }

        /* ========== 玻璃卡片 ========== */
        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: var(--transition);
        }
        .glass-card:hover {
            background: rgba(124,92,252,0.08);
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            min-height: 44px;
            text-align: center;
        }
        .btn--primary {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 0 20px rgba(124,92,252,0.25);
        }
        .btn--primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 0 32px rgba(124,92,252,0.4);
            transform: translateY(-2px);
            color: var(--text-white);
        }
        .btn--secondary {
            background: var(--secondary);
            color: #0B1424;
            box-shadow: 0 0 20px rgba(245,166,35,0.25);
        }
        .btn--secondary:hover {
            background: var(--secondary-light);
            box-shadow: 0 0 32px rgba(245,166,35,0.4);
            transform: translateY(-2px);
            color: #0B1424;
        }
        .btn--outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary-light);
        }
        .btn--outline:hover {
            background: rgba(124,92,252,0.12);
            border-color: var(--primary-light);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn--large {
            font-size: 20px;
            padding: 20px 48px;
            min-height: 72px;
            border-radius: var(--radius-lg);
        }
        .btn--block {
            width: 100%;
        }

        /* ========== 徽章 ========== */
        .badge {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(124,92,252,0.2);
            color: var(--primary-light);
            border: 1px solid rgba(124,92,252,0.15);
        }
        .badge--gold {
            background: rgba(245,166,35,0.2);
            color: var(--secondary);
            border-color: rgba(245,166,35,0.15);
        }
        .badge--green {
            background: rgba(6,214,160,0.2);
            color: var(--accent-green);
            border-color: rgba(6,214,160,0.15);
        }

        /* ========== 分隔线 ========== */
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
            margin: 8px 0;
        }

        /* ========== 会员对比表 ========== */
        .pricing-table {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 20px;
        }
        .pricing-card {
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            transition: var(--transition);
            text-align: center;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
        }
        .pricing-card--highlight {
            border-color: var(--primary);
            background: rgba(124,92,252,0.08);
            box-shadow: 0 0 30px rgba(124,92,252,0.15);
            position: relative;
        }
        .pricing-card--highlight::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--secondary);
            color: #0B1424;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 999px;
        }
        .pricing-card__name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .pricing-card__price {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }
        .pricing-card__price span {
            font-size: 16px;
            font-weight: 400;
            color: var(--text-dim);
        }
        .pricing-card__features {
            text-align: left;
            margin: 20px 0;
            padding: 0;
        }
        .pricing-card__features li {
            padding: 10px 0;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            color: var(--text-light);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .pricing-card__features li:last-child {
            border-bottom: none;
        }
        .pricing-card__features .icon-check {
            color: var(--accent-green);
            font-size: 14px;
            flex-shrink: 0;
        }
        .pricing-card__features .icon-times {
            color: var(--text-dim);
            font-size: 14px;
            flex-shrink: 0;
        }
        .pricing-card .btn {
            margin-top: 16px;
            width: 100%;
        }
        .pricing-card--highlight .btn {
            background: linear-gradient(135deg, var(--primary), #9B84FF);
            color: var(--text-white);
        }

        /* ========== 等级亮点（四列卡片） ========== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .tier-card {
            text-align: center;
            padding: 32px 20px;
        }
        .tier-card__icon {
            font-size: 40px;
            margin-bottom: 16px;
            display: block;
        }
        .tier-card__title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .tier-card__list {
            text-align: left;
            margin-top: 12px;
        }
        .tier-card__list li {
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .tier-card__list li::before {
            content: '✦';
            color: var(--primary);
            font-size: 10px;
        }
        .tier-card__link {
            display: inline-block;
            margin-top: 16px;
            font-size: 14px;
            color: var(--primary-light);
            font-weight: 500;
        }
        .tier-card__link:hover {
            color: var(--text-white);
        }

        /* ========== 专属内容预览 ========== */
        .exclusive-grid {
            display: flex;
            gap: 40px;
            align-items: center;
        }
        .exclusive-grid__image {
            flex: 0 0 45%;
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .exclusive-grid__image img {
            width: 100%;
            height: auto;
        }
        .exclusive-grid__items {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .exclusive-item {
            display: flex;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-glass);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glass);
            transition: var(--transition);
        }
        .exclusive-item:hover {
            background: rgba(124,92,252,0.06);
            border-color: var(--border-hover);
        }
        .exclusive-item__content {
            flex: 1;
        }
        .exclusive-item__title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 4px;
        }
        .exclusive-item__desc {
            font-size: 14px;
            color: var(--text-muted);
        }
        .exclusive-item__badge {
            flex-shrink: 0;
            align-self: center;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .faq-item {
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            background: rgba(124,92,252,0.06);
        }
        .faq-item.open {
            border-color: rgba(124,92,252,0.3);
        }
        .faq-item__header {
            padding: 16px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-white);
            user-select: none;
            transition: var(--transition);
        }
        .faq-item__header:hover {
            color: var(--primary-light);
        }
        .faq-item__icon {
            font-size: 20px;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-item__icon {
            transform: rotate(45deg);
        }
        .faq-item__body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-item__body {
            max-height: 500px;
            padding: 0 20px 16px;
        }
        .faq-item__body p {
            font-size: 15px;
            color: var(--text-blue);
            line-height: 1.7;
        }

        /* ========== CTA 条 ========== */
        .cta-section {
            background: linear-gradient(135deg, #0B1424, #1A0A3E);
            padding: 80px 0;
            text-align: center;
            border-top: 1px solid rgba(255,255,255,0.05);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .cta-section__title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-section__desc {
            font-size: 16px;
            color: var(--text-blue);
            margin-bottom: 32px;
        }

        /* ========== 最新资讯列表 (CMS) ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            background: rgba(124,92,252,0.06);
        }
        .news-card__image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: 0;
        }
        .news-card__body {
            padding: 20px;
        }
        .news-card__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card__excerpt {
            font-size: 14px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .news-card__meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-dim);
        }
        .news-card__meta .badge {
            font-size: 11px;
        }
        .news-card__link {
            font-size: 13px;
            color: var(--primary-light);
            font-weight: 500;
        }
        .news-card__link:hover {
            color: var(--text-white);
        }
        /* 空状态 */
        .news-empty {
            grid-column: 1 / -1;
            padding: 48px 24px;
            text-align: center;
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-lg);
            color: var(--text-muted);
            font-size: 16px;
            border: 1px dashed rgba(255,255,255,0.08);
        }

        /* ========== 页脚 ========== */
        .footer {
            background: #070C18;
            border-top: 1px solid rgba(255,255,255,0.05);
            padding: 48px 24px 24px;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-bottom: 32px;
        }
        .footer__brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer__brand .logo-char {
            color: var(--secondary);
        }
        .footer__desc {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.6;
            margin-bottom: 16px;
            max-width: 320px;
        }
        .footer__social {
            display: flex;
            gap: 12px;
        }
        .footer__social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: var(--text-dim);
            font-size: 16px;
            transition: var(--transition);
            border: 1px solid rgba(255,255,255,0.06);
        }
        .footer__social a:hover {
            background: rgba(124,92,252,0.2);
            color: var(--primary-light);
            border-color: var(--primary);
        }
        .footer__col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer__links a {
            font-size: 14px;
            color: var(--text-dim);
            transition: var(--transition);
        }
        .footer__links a:hover {
            color: var(--primary-light);
        }
        .footer__bottom {
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dim);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero__title { font-size: 44px; }
            .pricing-table { grid-template-columns: 1fr 1fr; }
            .tier-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }

        @media (max-width: 768px) {
            .header__nav { display: none; }
            .header__search { display: none; }
            .hamburger { display: flex; }
            .header__actions .btn--nav-cta { display: none; }

            .hero { padding: 100px 0 60px; min-height: auto; }
            .hero__content { flex-direction: column; text-align: center; }
            .hero__text { flex: 0 0 100%; }
            .hero__title { font-size: 40px; }
            .hero__subtitle { font-size: 16px; margin-left: auto; margin-right: auto; }
            .hero__cta { width: 100%; justify-content: center; }
            .hero__image { display: none; }

            .section { padding: 48px 0; }
            .section__title { font-size: 28px; }
            .section__desc { font-size: 15px; }

            .pricing-table { grid-template-columns: 1fr; gap: 16px; }
            .tier-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .exclusive-grid { flex-direction: column; gap: 24px; }
            .exclusive-grid__image { flex: 0 0 100%; }
            .news-grid { grid-template-columns: 1fr; gap: 16px; }
            .cta-section { padding: 48px 0; }
            .cta-section__title { font-size: 28px; }
            .btn--large { width: 100%; font-size: 18px; padding: 16px 32px; min-height: 56px; }
            .footer__grid { grid-template-columns: 1fr; gap: 24px; }
            .footer__bottom { flex-direction: column; text-align: center; }
            .col-4, .col-3 { flex: 0 0 100%; }
            .col-6 { flex: 0 0 100%; }
            .row { flex-direction: column; }
        }

        @media (max-width: 480px) {
            .hero__title { font-size: 32px; }
            .hero__subtitle { font-size: 15px; }
            .section__title { font-size: 24px; }
            .tier-grid { grid-template-columns: 1fr; }
            .container { padding: 0 16px; }
            .header__inner { padding: 0 16px; }
            .footer { padding: 32px 16px 16px; }
            .pricing-card { padding: 24px 16px; }
            .faq-item__header { font-size: 15px; padding: 14px 16px; }
            .faq-item__body p { font-size: 14px; }
        }

        /* ========== 滚动动画辅助 ========== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: article */
/* ===== Design System ===== */
        :root {
            --primary-bg: #0B1424;
            --primary-bg-radial: #0F1A2E;
            --brand-purple: #7C5CFC;
            --brand-purple-dark: #6A4DE6;
            --amber-gold: #F5A623;
            --amber-light: #FFC107;
            --jade-green: #06D6A0;
            --text-white: #FFFFFF;
            --text-light: #E0E6F6;
            --text-muted: #8896B8;
            --text-dim: #6B7A9F;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-mid: rgba(255, 255, 255, 0.12);
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-hover: rgba(124, 92, 252, 0.08);
            --card-radius: 12px;
            --btn-radius: 8px;
            --badge-radius: 6px;
            --font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width: 1280px;
            --content-width: 800px;
            --nav-height: 72px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --shadow-glow: 0 0 24px rgba(124, 92, 252, 0.4), 0 0 48px rgba(124, 92, 252, 0.15);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.2);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--primary-bg);
            background-image: radial-gradient(ellipse at 50% 0%, #0F1A2E 0%, #0B1424 70%);
            color: var(--text-light);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        a {
            color: var(--brand-purple);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--amber-gold);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--narrow {
            max-width: var(--content-width);
        }

        /* ===== Header / Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(11, 20, 36, 0.5);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .header.scrolled {
            background: rgba(11, 20, 36, 0.95);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 24px;
            font-weight: 700;
            color: var(--text-white);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header__logo .logo-char {
            color: var(--amber-gold);
            font-size: 28px;
        }

        .header__logo:hover {
            color: var(--text-white);
        }

        .header__nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .header__nav a {
            font-size: 15px;
            color: #C8D0E8;
            font-weight: 400;
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .header__nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-purple);
            transition: width var(--transition-base);
        }

        .header__nav a:hover {
            color: var(--text-white);
        }

        .header__nav a:hover::after {
            width: 100%;
        }

        .header__nav a.active {
            color: var(--text-white);
        }

        .header__nav a.active::after {
            width: 100%;
            background: var(--amber-gold);
        }

        .header__actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header__search {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-light);
            border-radius: var(--btn-radius);
            padding: 8px 14px;
            color: var(--text-light);
            font-size: 14px;
            width: 180px;
            outline: none;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .header__search::placeholder {
            color: var(--text-dim);
        }

        .header__search:focus {
            border-color: var(--brand-purple);
            background: rgba(255, 255, 255, 0.08);
        }

        .header__cta {
            background: var(--amber-gold);
            color: #0B1424;
            font-weight: 600;
            font-size: 14px;
            padding: 8px 20px;
            border-radius: var(--btn-radius);
            border: none;
            cursor: pointer;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .header__cta:hover {
            background: var(--amber-light);
            box-shadow: 0 0 20px rgba(245, 166, 35, 0.3);
            transform: translateY(-1px);
            color: #0B1424;
        }

        .header__cta:active {
            transform: translateY(0);
        }

        /* Hamburger */
        .header__toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
            z-index: 1001;
        }

        .header__toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all var(--transition-base);
            transform-origin: center;
        }

        .header__toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .header__toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .header__toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Article Banner ===== */
        .article-banner {
            padding-top: calc(var(--nav-height) + 40px);
            padding-bottom: 40px;
            background: linear-gradient(135deg, rgba(11, 20, 36, 0.9), rgba(124, 92, 252, 0.25)),
                url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            border-bottom: 1px solid var(--border-light);
            position: relative;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 20, 36, 0.3) 0%, rgba(11, 20, 36, 0.8) 100%);
            pointer-events: none;
        }

        .article-banner .container--narrow {
            position: relative;
            z-index: 1;
        }

        .article-breadcrumb {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }

        .article-breadcrumb a {
            color: var(--text-muted);
        }

        .article-breadcrumb a:hover {
            color: var(--brand-purple);
        }

        .article-breadcrumb .sep {
            color: var(--text-dim);
            margin: 0 4px;
        }

        .article-breadcrumb .current {
            color: var(--text-light);
        }

        .article-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.3;
            margin-bottom: 12px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-item i {
            font-size: 13px;
            color: var(--brand-purple);
        }

        .article-meta .category-badge {
            display: inline-block;
            background: rgba(124, 92, 252, 0.2);
            color: var(--brand-purple);
            font-size: 12px;
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 500;
        }

        /* ===== Article Content ===== */
        .article-content-wrap {
            padding: 48px 0 64px;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-light);
        }

        .article-content h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text-white);
            margin: 40px 0 16px;
            padding-left: 16px;
            border-left: 3px solid var(--brand-purple);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-white);
            margin: 32px 0 12px;
            padding-left: 14px;
            border-left: 3px solid var(--amber-gold);
            line-height: 1.4;
        }

        .article-content p {
            margin-bottom: 20px;
        }

        .article-content strong {
            color: var(--text-white);
            font-weight: 600;
        }

        .article-content blockquote {
            border-left: 4px solid var(--amber-gold);
            background: rgba(245, 166, 35, 0.06);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 0 var(--card-radius) var(--card-radius) 0;
            color: #C8D0E8;
            font-style: italic;
        }

        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }

        .article-content ul li {
            list-style: disc;
            margin-bottom: 8px;
            color: var(--text-light);
        }

        .article-content ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }

        .article-content li::marker {
            color: var(--brand-purple);
        }

        .article-content code {
            background: #1A1F2E;
            color: var(--amber-gold);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            font-family: 'Fira Code', 'Consolas', monospace;
        }

        .article-content pre {
            background: #1A1F2E;
            border-radius: var(--card-radius);
            padding: 20px 24px;
            overflow-x: auto;
            margin: 24px 0;
            border: 1px solid var(--border-light);
        }

        .article-content pre code {
            background: none;
            padding: 0;
            color: var(--text-light);
            font-size: 14px;
        }

        .article-content img {
            border-radius: var(--card-radius);
            margin: 24px 0;
            width: 100%;
            object-fit: cover;
        }

        .article-content a {
            color: var(--brand-purple);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-content a:hover {
            color: var(--amber-gold);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }

        .article-content table th,
        .article-content table td {
            padding: 12px 16px;
            border: 1px solid var(--border-light);
            text-align: left;
        }

        .article-content table th {
            background: rgba(124, 92, 252, 0.12);
            color: var(--text-white);
            font-weight: 600;
        }

        .article-content table td {
            background: rgba(255, 255, 255, 0.02);
        }

        .article-content table tr:hover td {
            background: rgba(124, 92, 252, 0.05);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .not-found-box i {
            font-size: 56px;
            color: var(--text-dim);
            margin-bottom: 20px;
            display: block;
        }

        .not-found-box h2 {
            font-size: 24px;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--brand-purple);
            color: var(--text-white);
            padding: 12px 28px;
            border-radius: var(--btn-radius);
            font-weight: 600;
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
        }

        .not-found-box .btn-back:hover {
            background: var(--brand-purple-dark);
            box-shadow: var(--shadow-glow);
            color: var(--text-white);
        }

        /* ===== Recommended ===== */
        .recommended {
            padding: 64px 0;
            border-top: 1px solid var(--border-light);
        }

        .recommended__title {
            font-size: 28px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .recommended__title::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 28px;
            background: var(--brand-purple);
            border-radius: 2px;
        }

        .recommended__grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .rec-card {
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all var(--transition-base);
        }

        .rec-card:hover {
            background: var(--glass-hover);
            border-color: rgba(124, 92, 252, 0.3);
            transform: translateY(-4px);
        }

        .rec-card__img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }

        .rec-card__body {
            padding: 20px;
        }

        .rec-card__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .rec-card__summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }

        .rec-card__footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .rec-card__tag {
            font-size: 12px;
            background: rgba(124, 92, 252, 0.2);
            color: var(--brand-purple);
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 500;
        }

        .rec-card__link {
            font-size: 14px;
            color: var(--brand-purple);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .rec-card__link:hover {
            color: var(--amber-gold);
        }

        /* ===== CTA Section ===== */
        .article-cta {
            padding: 64px 0;
            background: linear-gradient(135deg, #0B1424, #1A0A3E);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            text-align: center;
        }

        .article-cta h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .article-cta p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .article-cta .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--amber-gold);
            color: #0B1424;
            font-weight: 700;
            font-size: 18px;
            padding: 16px 40px;
            border-radius: var(--card-radius);
            border: none;
            cursor: pointer;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            min-height: 56px;
        }

        .article-cta .btn-cta:hover {
            background: var(--amber-light);
            box-shadow: 0 0 32px rgba(245, 166, 35, 0.4);
            transform: translateY(-2px);
            color: #0B1424;
        }

        .article-cta .btn-cta:active {
            transform: translateY(0);
        }

        /* ===== Footer ===== */
        .footer {
            background: #070C18;
            border-top: 1px solid var(--border-light);
            padding: 48px 24px 24px;
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .footer__brand {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .footer__brand .logo-char {
            color: var(--amber-gold);
            font-size: 26px;
        }

        .footer__desc {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 360px;
        }

        .footer__social {
            display: flex;
            gap: 16px;
        }

        .footer__social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            color: var(--text-dim);
            font-size: 18px;
            transition: all var(--transition-fast);
            border: 1px solid var(--border-light);
        }

        .footer__social a:hover {
            background: rgba(124, 92, 252, 0.2);
            color: var(--brand-purple);
            border-color: var(--brand-purple);
            transform: translateY(-2px);
        }

        .footer__col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer__links a {
            font-size: 14px;
            color: var(--text-dim);
            transition: color var(--transition-fast);
        }

        .footer__links a:hover {
            color: var(--brand-purple);
        }

        .footer__bottom {
            max-width: var(--max-width);
            margin: 40px auto 0;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dim);
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            background: var(--brand-purple);
            color: var(--text-white);
            border: none;
            border-radius: 50%;
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(124, 92, 252, 0.3);
            z-index: 999;
        }

        .back-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .back-top:hover {
            background: var(--brand-purple-dark);
            box-shadow: 0 4px 24px rgba(124, 92, 252, 0.5);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .footer__desc {
                max-width: 100%;
            }

            .recommended__grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }

            .header__nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: rgba(11, 20, 36, 0.98);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                padding: 80px 32px 40px;
                gap: 24px;
                transition: right var(--transition-base);
                border-left: 1px solid var(--border-light);
                align-items: flex-start;
                overflow-y: auto;
            }

            .header__nav.open {
                right: 0;
            }

            .header__nav a {
                font-size: 18px;
                width: 100%;
            }

            .header__toggle {
                display: flex;
            }

            .header__search {
                display: none;
            }

            .header__cta {
                font-size: 13px;
                padding: 6px 16px;
                height: 34px;
            }

            .header__logo {
                font-size: 20px;
            }

            .header__logo .logo-char {
                font-size: 24px;
            }

            .article-title {
                font-size: 28px;
            }

            .article-banner {
                padding-top: calc(var(--nav-height) + 24px);
                padding-bottom: 28px;
            }

            .article-content-wrap {
                padding: 32px 0 40px;
            }

            .article-content h2 {
                font-size: 24px;
                margin-top: 32px;
            }

            .article-content h3 {
                font-size: 19px;
                margin-top: 24px;
            }

            .recommended__grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .recommended__title {
                font-size: 24px;
            }

            .article-cta h2 {
                font-size: 26px;
            }

            .article-cta .btn-cta {
                font-size: 16px;
                padding: 14px 28px;
                min-height: 48px;
                width: 100%;
                max-width: 360px;
                justify-content: center;
            }

            .footer__grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer__bottom {
                flex-direction: column;
                text-align: center;
            }

            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 18px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

            .article-title {
                font-size: 24px;
            }

            .article-content {
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 21px;
                padding-left: 12px;
            }

            .article-content h3 {
                font-size: 18px;
                padding-left: 10px;
            }

            .article-meta {
                font-size: 13px;
                gap: 8px 16px;
            }

            .recommended__title {
                font-size: 21px;
            }

            .rec-card__title {
                font-size: 16px;
            }

            .article-cta h2 {
                font-size: 22px;
            }

            .article-cta p {
                font-size: 15px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }

        .mt-24 {
            margin-top: 24px;
        }

        .mb-24 {
            margin-bottom: 24px;
        }

        .gap-8 {
            gap: 8px;
        }

        /* Overlay for mobile menu */
        .nav-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition-base);
        }

        .nav-overlay.active {
            opacity: 1;
            visibility: visible;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary-dark: #0B1424;
            --primary-mid: #0F1A2E;
            --brand-purple: #7C5CFC;
            --brand-purple-light: #9B7FFF;
            --brand-purple-dark: #5B3FD4;
            --amber-gold: #F5A623;
            --amber-light: #FFC107;
            --jade-green: #06D6A0;
            --text-white: #FFFFFF;
            --text-light: #C8D0E8;
            --text-muted: #8896B8;
            --text-dim: #6B7A9F;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-mid: rgba(255, 255, 255, 0.12);
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-hover: rgba(124, 92, 252, 0.08);
            --card-radius: 12px;
            --btn-radius: 8px;
            --badge-radius: 6px;
            --shadow-glow: 0 0 24px rgba(124, 92, 252, 0.4);
            --shadow-glow-hover: 0 0 48px rgba(124, 92, 252, 0.6);
            --font-sans: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            --max-width: 1280px;
            --nav-height: 72px;
            --section-gap: 80px;
            --section-gap-mobile: 48px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--primary-dark);
            background-image: radial-gradient(ellipse at 50% 0%, #132044 0%, #0B1424 50%, #070C18 100%);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--brand-purple);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--brand-purple-light);
        }
        a:focus-visible {
            outline: 2px solid var(--brand-purple);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--card-radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
            font-size: 1rem;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.3;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Glassmorphism Utility ===== */
        .glass {
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
        }

        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
            padding: 24px;
            transition: all 0.3s ease;
        }

        .glass-card:hover {
            background: var(--glass-hover);
            border-color: rgba(124, 92, 252, 0.3);
            transform: translateY(-4px);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--btn-radius);
            transition: all 0.3s ease;
            min-height: 44px;
            padding: 10px 24px;
            font-size: 1rem;
            line-height: 1.4;
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--brand-purple);
            color: #fff;
            box-shadow: 0 0 20px rgba(124, 92, 252, 0.3);
        }
        .btn-primary:hover {
            background: var(--brand-purple-light);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(124, 92, 252, 0.3);
        }

        .btn-amber {
            background: var(--amber-gold);
            color: #0B1424;
            box-shadow: 0 0 20px rgba(245, 166, 35, 0.3);
            font-weight: 700;
        }
        .btn-amber:hover {
            background: var(--amber-light);
            box-shadow: 0 0 40px rgba(245, 166, 35, 0.5);
            transform: translateY(-2px);
            color: #0B1424;
        }
        .btn-amber:active {
            transform: translateY(0);
        }

        .btn-outline {
            background: transparent;
            color: var(--brand-purple);
            border: 1px solid var(--brand-purple);
        }
        .btn-outline:hover {
            background: rgba(124, 92, 252, 0.12);
            color: var(--brand-purple-light);
            border-color: var(--brand-purple-light);
            transform: translateY(-2px);
        }

        .btn-lg {
            min-height: 56px;
            padding: 14px 36px;
            font-size: 1.125rem;
            border-radius: 12px;
        }

        .btn-xl {
            min-height: 72px;
            padding: 18px 48px;
            font-size: 1.25rem;
            border-radius: 12px;
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.8125rem;
            font-weight: 600;
            border-radius: var(--badge-radius);
            background: rgba(124, 92, 252, 0.18);
            color: var(--brand-purple-light);
            border: 1px solid rgba(124, 92, 252, 0.2);
        }

        .badge-gold {
            background: rgba(245, 166, 35, 0.18);
            color: var(--amber-gold);
            border-color: rgba(245, 166, 35, 0.25);
        }

        .badge-green {
            background: rgba(6, 214, 160, 0.15);
            color: var(--jade-green);
            border-color: rgba(6, 214, 160, 0.2);
        }

        /* ===== Header / Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 20, 36, 0.5);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            transition: background 0.4s ease, box-shadow 0.4s ease;
            height: var(--nav-height);
        }

        .header.scrolled {
            background: rgba(11, 20, 36, 0.95);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-white);
            text-decoration: none;
            flex-shrink: 0;
        }
        .header__logo .logo-char {
            color: var(--amber-gold);
            font-size: 1.6rem;
        }
        .header__logo:hover {
            color: var(--text-white);
        }

        .header__nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .header__nav a {
            font-size: 0.9375rem;
            color: var(--text-light);
            font-weight: 500;
            padding: 4px 0;
            position: relative;
            transition: color 0.25s ease;
            text-decoration: none;
        }
        .header__nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-purple);
            transition: width 0.3s ease;
        }
        .header__nav a:hover {
            color: #fff;
        }
        .header__nav a:hover::after {
            width: 100%;
        }
        .header__nav a.active {
            color: #fff;
        }
        .header__nav a.active::after {
            width: 100%;
            background: var(--brand-purple);
        }

        .header__actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header__search {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--btn-radius);
            padding: 8px 14px;
            color: var(--text-light);
            font-size: 0.875rem;
            width: 180px;
            transition: border-color 0.3s ease, background 0.3s ease;
        }
        .header__search::placeholder {
            color: var(--text-dim);
        }
        .header__search:focus {
            border-color: var(--brand-purple);
            background: rgba(255, 255, 255, 0.08);
            outline: none;
        }
        .header__search-btn {
            background: transparent;
            color: var(--text-light);
            font-size: 1.125rem;
            padding: 0 4px;
            border: none;
            cursor: pointer;
            transition: color 0.25s ease;
        }
        .header__search-btn:hover {
            color: var(--brand-purple);
        }

        .header__cta {
            background: var(--amber-gold);
            color: #0B1424;
            font-weight: 700;
            padding: 8px 20px;
            border-radius: var(--btn-radius);
            font-size: 0.9375rem;
            min-height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            text-decoration: none;
            box-shadow: 0 0 12px rgba(245, 166, 35, 0.25);
        }
        .header__cta:hover {
            background: var(--amber-light);
            box-shadow: 0 0 24px rgba(245, 166, 35, 0.4);
            transform: translateY(-1px);
            color: #0B1424;
        }

        /* Hamburger */
        .header__hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        .header__hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .header__hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .header__hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .header__hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 1024px) {
            .header__nav {
                gap: 20px;
            }
            .header__search {
                width: 130px;
            }
        }

        @media (max-width: 768px) {
            .header__hamburger {
                display: flex;
            }
            .header__nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(11, 20, 36, 0.98);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                gap: 0;
                padding: 16px 24px 24px;
                transform: translateY(-110%);
                opacity: 0;
                transition: all 0.4s ease;
                border-bottom: 1px solid var(--border-light);
                pointer-events: none;
            }
            .header__nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .header__nav a {
                padding: 14px 0;
                font-size: 1rem;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }
            .header__nav a:last-child {
                border-bottom: none;
            }
            .header__nav a::after {
                display: none;
            }
            .header__nav a.active {
                color: var(--brand-purple-light);
                background: rgba(124, 92, 252, 0.06);
                padding-left: 12px;
                border-radius: 6px;
            }
            .header__search {
                display: none;
            }
            .header__cta {
                font-size: 0.8125rem;
                padding: 6px 14px;
                min-height: 32px;
            }
        }

        @media (max-width: 480px) {
            .header__logo {
                font-size: 1.25rem;
            }
            .header__logo .logo-char {
                font-size: 1.35rem;
            }
            .header__cta {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
        }

        /* ===== Hero Banner ===== */
        .hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            text-align: center;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(11, 20, 36, 0.88), rgba(124, 92, 252, 0.35)),
                url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
        }

        .hero__content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .hero__badge {
            display: inline-block;
            padding: 6px 20px;
            background: rgba(124, 92, 252, 0.2);
            border: 1px solid rgba(124, 92, 252, 0.3);
            border-radius: 40px;
            color: var(--brand-purple-light);
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 700;
            color: #fff;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .hero p {
            font-size: 1.125rem;
            color: #B0C4FF;
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .hero__actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 380px;
                padding: 100px 16px 60px;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero__actions {
                flex-direction: column;
                align-items: center;
            }
            .hero__actions .btn {
                width: 100%;
                max-width: 320px;
            }
        }

        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 0.9375rem;
            }
            .hero__badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section__header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section__header h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section__header h2::before {
            content: '';
            display: block;
            width: 48px;
            height: 4px;
            background: var(--brand-purple);
            border-radius: 4px;
            margin: 0 auto 16px;
        }
        .section__header p {
            font-size: 1.0625rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section__header {
                margin-bottom: 32px;
            }
            .section__header h2 {
                font-size: 1.75rem;
            }
            .section__header p {
                font-size: 0.9375rem;
            }
        }

        @media (max-width: 480px) {
            .section__header h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== Category Tags ===== */
        .category-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-bottom: 48px;
        }
        .category-tags .tag {
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 0.875rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-light);
            color: var(--text-light);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .category-tags .tag:hover,
        .category-tags .tag.active {
            background: rgba(124, 92, 252, 0.15);
            border-color: var(--brand-purple);
            color: var(--brand-purple-light);
            transform: translateY(-2px);
        }
        .category-tags .tag.active {
            background: rgba(124, 92, 252, 0.2);
            box-shadow: 0 0 16px rgba(124, 92, 252, 0.2);
        }

        /* ===== Game List (Left Image Right Text) ===== */
        .game-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .game-card {
            display: flex;
            gap: 28px;
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
            padding: 24px;
            transition: all 0.3s ease;
            align-items: flex-start;
        }
        .game-card:hover {
            background: var(--glass-hover);
            border-color: rgba(124, 92, 252, 0.3);
            transform: translateY(-4px);
        }

        .game-card__image {
            flex-shrink: 0;
            width: 240px;
            height: 160px;
            border-radius: 10px;
            overflow: hidden;
        }
        .game-card__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 10px;
        }

        .game-card__body {
            flex: 1;
            min-width: 0;
        }
        .game-card__body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        .game-card__body .game-meta {
            display: flex;
            gap: 12px;
            font-size: 0.8125rem;
            color: var(--text-dim);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .game-card__body .game-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .game-card__body .game-meta i {
            color: var(--brand-purple);
        }
        .game-card__body p {
            font-size: 0.9375rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .game-card__body .game-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .game-card__body .game-tags .badge {
            font-size: 0.75rem;
            padding: 2px 12px;
        }
        .game-card__body .card-actions {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .game-card__body .card-actions .btn {
            min-height: 36px;
            padding: 6px 18px;
            font-size: 0.875rem;
        }

        @media (max-width: 768px) {
            .game-card {
                flex-direction: column;
                padding: 18px;
                gap: 16px;
            }
            .game-card__image {
                width: 100%;
                height: 200px;
            }
            .game-card__body h3 {
                font-size: 1.125rem;
            }
            .game-card__body p {
                font-size: 0.875rem;
                -webkit-line-clamp: 3;
            }
            .game-card__body .card-actions {
                flex-wrap: wrap;
            }
        }

        @media (max-width: 480px) {
            .game-card__image {
                height: 160px;
            }
        }

        /* ===== Features Grid ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
            transition: all 0.3s ease;
        }
        .feature-card:hover {
            background: var(--glass-hover);
            border-color: rgba(124, 92, 252, 0.25);
            transform: translateY(-4px);
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(124, 92, 252, 0.12);
            border-radius: 16px;
            font-size: 1.75rem;
            color: var(--brand-purple-light);
            transition: background 0.3s ease;
        }
        .feature-card:hover .icon-wrap {
            background: rgba(124, 92, 252, 0.22);
        }
        .feature-card h4 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-white);
        }
        .feature-card p {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-card {
                padding: 24px 16px;
            }
        }

        /* ===== Stats / Social Proof ===== */
        .stats-section {
            background: linear-gradient(135deg, rgba(11, 20, 36, 0.95), rgba(26, 10, 62, 0.9)),
                url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stats-grid .stat-item h3 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--amber-gold);
            line-height: 1.2;
        }
        .stats-grid .stat-item .stat-label {
            font-size: 0.9375rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stats-grid .stat-item h3 {
                font-size: 2rem;
            }
        }

        @media (max-width: 480px) {
            .stats-grid .stat-item h3 {
                font-size: 1.75rem;
            }
        }

        /* ===== FAQ Accordion ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item.open {
            border-color: rgba(124, 92, 252, 0.3);
        }

        .faq-item__header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 20px;
            cursor: pointer;
            user-select: none;
            transition: background 0.25s ease;
        }
        .faq-item__header:hover {
            background: rgba(124, 92, 252, 0.06);
        }
        .faq-item__header h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-light);
            flex: 1;
            padding-right: 12px;
        }
        .faq-item__header .faq-icon {
            font-size: 1.25rem;
            color: var(--brand-purple);
            flex-shrink: 0;
            transition: transform 0.3s ease;
            font-weight: 300;
        }
        .faq-item.open .faq-item__header .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item__body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }
        .faq-item.open .faq-item__body {
            max-height: 500px;
            padding: 0 20px 16px;
        }
        .faq-item__body p {
            font-size: 0.9375rem;
            color: #C8D0E8;
            line-height: 1.7;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, #0B1424, #1A0A3E);
            border-top: 1px solid var(--border-light);
            text-align: center;
            padding: 80px 24px;
        }
        .cta-section h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.125rem;
            color: var(--text-muted);
            max-width: 540px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            min-height: 72px;
            padding: 18px 56px;
            font-size: 1.25rem;
            border-radius: 12px;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 16px;
            }
            .cta-section h2 {
                font-size: 1.75rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-section .btn {
                min-height: 56px;
                padding: 14px 36px;
                font-size: 1.0625rem;
                width: 100%;
                max-width: 360px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: #070C18;
            border-top: 1px solid var(--border-light);
            padding: 48px 24px 24px;
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .footer__brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer__brand .logo-char {
            color: var(--amber-gold);
        }

        .footer__desc {
            font-size: 0.875rem;
            color: var(--text-dim);
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 360px;
        }

        .footer__social {
            display: flex;
            gap: 16px;
        }
        .footer__social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1.125rem;
            transition: all 0.3s ease;
        }
        .footer__social a:hover {
            background: rgba(124, 92, 252, 0.15);
            border-color: var(--brand-purple);
            color: var(--brand-purple-light);
            transform: translateY(-2px);
        }

        .footer__col-title {
            font-size: 0.9375rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer__links a {
            font-size: 0.875rem;
            color: var(--text-dim);
            transition: color 0.25s ease;
        }
        .footer__links a:hover {
            color: var(--brand-purple-light);
        }

        .footer__bottom {
            max-width: var(--max-width);
            margin: 32px auto 0;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            font-size: 0.8125rem;
            color: var(--text-dim);
            flex-wrap: wrap;
            gap: 8px;
        }

        @media (max-width: 1024px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .footer {
                padding: 32px 16px 20px;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Back to Top ===== */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--brand-purple);
            color: #fff;
            border: none;
            font-size: 1.25rem;
            box-shadow: var(--shadow-glow);
            cursor: pointer;
            transition: all 0.3s ease;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            z-index: 999;
        }
        .back-to-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--brand-purple-light);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-4px);
        }

        @media (max-width: 480px) {
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

        /* ===== Responsive Grid Utilities ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            gap: 8px;
            font-size: 0.8125rem;
            color: var(--text-dim);
            padding: 16px 0 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--brand-purple-light);
        }
        .breadcrumb span {
            color: var(--text-dim);
        }
        .breadcrumb .sep {
            color: var(--text-dim);
        }

        @media (max-width: 768px) {
            .breadcrumb {
                padding-left: 16px;
                padding-right: 16px;
                font-size: 0.75rem;
            }
        }

        /* ===== Section Divider ===== */
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-light), transparent);
            margin: 0 auto;
            max-width: var(--max-width);
            width: calc(100% - 48px);
        }

        @media (max-width: 768px) {
            .section-divider {
                width: calc(100% - 32px);
            }
        }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #7C5CFC;
            --primary-light: #9B7FFF;
            --primary-dark: #5B3EE0;
            --accent: #F5A623;
            --accent-light: #FFC107;
            --success: #06D6A0;
            --bg-dark: #0B1424;
            --bg-card: rgba(255, 255, 255, 0.05);
            --bg-card-hover: rgba(124, 92, 252, 0.08);
            --border-light: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(124, 92, 252, 0.3);
            --text-white: #FFFFFF;
            --text-light: #C8D0E8;
            --text-muted: #8896B8;
            --text-dim: #6B7A9F;
            --font-sans: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-glow: 0 0 24px rgba(124, 92, 252, 0.4);
            --shadow-glow-lg: 0 0 48px rgba(124, 92, 252, 0.25);
            --transition: all 0.3s ease;
            --container-max: 1280px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            background-image: radial-gradient(ellipse at 30% 20%, rgba(124, 92, 252, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(6, 214, 160, 0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(11, 20, 36, 1) 0%, rgba(15, 26, 46, 1) 100%);
            min-height: 100vh;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--text-white);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 20, 36, 0.5);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
            height: var(--header-height);
        }

        .header.scrolled {
            background: rgba(11, 20, 36, 0.95);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 24px;
            font-weight: 700;
            color: var(--text-white);
            white-space: nowrap;
        }

        .header__logo .logo-char {
            color: var(--accent);
            font-size: 28px;
        }

        .header__nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .header__nav a {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 400;
            padding: 4px 0;
            position: relative;
            transition: var(--transition);
        }

        .header__nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
            border-radius: 2px;
        }

        .header__nav a:hover {
            color: var(--text-white);
        }
        .header__nav a:hover::after {
            width: 100%;
        }

        .header__nav a.active {
            color: var(--text-white);
        }
        .header__nav a.active::after {
            width: 100%;
            background: var(--primary);
        }

        .header__actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .header__search {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 8px 14px;
            color: var(--text-light);
            font-size: 14px;
            width: 180px;
            transition: var(--transition);
        }
        .header__search::placeholder {
            color: var(--text-dim);
        }
        .header__search:focus {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.1);
        }

        .header__cta {
            background: var(--accent);
            color: #0B1424;
            font-weight: 600;
            font-size: 14px;
            padding: 8px 20px;
            border-radius: var(--radius-md);
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 0 16px rgba(245, 166, 35, 0.3);
        }
        .header__cta:hover {
            background: var(--accent-light);
            color: #0B1424;
            box-shadow: 0 0 28px rgba(245, 166, 35, 0.5);
            transform: translateY(-1px);
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            padding: 4px;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(11, 20, 36, 0.98);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 24px;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
            transform: translateY(-10px);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }
        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav a {
            font-size: 16px;
            color: var(--text-light);
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .mobile-nav a.active {
            color: var(--primary-light);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }

        @media (max-width: 768px) {
            .header__nav {
                display: none;
            }
            .header__search {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: flex;
            }
            .header__inner {
                padding: 0 16px;
            }
            .header__logo {
                font-size: 20px;
            }
            .header__logo .logo-char {
                font-size: 24px;
            }
            .header__cta {
                font-size: 13px;
                padding: 6px 14px;
            }
        }

        @media (max-width: 480px) {
            .header__cta {
                font-size: 12px;
                padding: 5px 12px;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 60px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 20, 36, 0.88), rgba(124, 92, 252, 0.45));
            z-index: 1;
        }

        .hero__content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 24px;
        }

        .hero__badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.2);
            color: var(--accent);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
            border: 1px solid rgba(245, 166, 35, 0.2);
        }

        .hero h1 {
            font-size: 52px;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .hero p {
            font-size: 18px;
            color: #B0C4FF;
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero__cta-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero__cta-primary {
            background: var(--accent);
            color: #0B1424;
            font-weight: 600;
            font-size: 18px;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            box-shadow: 0 0 24px rgba(245, 166, 35, 0.4);
            transition: var(--transition);
        }
        .hero__cta-primary:hover {
            background: var(--accent-light);
            color: #0B1424;
            box-shadow: 0 0 48px rgba(245, 166, 35, 0.6);
            transform: translateY(-2px);
        }

        .hero__cta-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
            font-weight: 500;
            font-size: 16px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition);
        }
        .hero__cta-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            color: var(--text-white);
            border-color: var(--primary);
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 400px;
                padding-top: calc(var(--header-height) + 24px);
                padding-bottom: 40px;
            }
            .hero h1 {
                font-size: 36px;
            }
            .hero p {
                font-size: 16px;
            }
            .hero__cta-primary,
            .hero__cta-secondary {
                font-size: 16px;
                padding: 12px 28px;
                width: 100%;
                text-align: center;
            }
            .hero__cta-group {
                flex-direction: column;
                align-items: stretch;
            }
        }

        @media (max-width: 480px) {
            .hero h1 {
                font-size: 28px;
            }
            .hero p {
                font-size: 15px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }

        .section__title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            text-align: center;
            margin-bottom: 12px;
        }

        .section__subtitle {
            font-size: 16px;
            color: var(--text-muted);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

        .section__title-line {
            display: inline-block;
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-bottom: 16px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section__title {
                font-size: 28px;
            }
            .section__subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }
        }

        @media (max-width: 480px) {
            .section__title {
                font-size: 24px;
            }
        }

        /* ===== Glass Card ===== */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: var(--transition);
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }

        /* ===== Activity Grid ===== */
        .activity-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .activity-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .activity-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }

        .activity-card__img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .activity-card__body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .activity-card__tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(124, 92, 252, 0.18);
            color: var(--primary-light);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 12px;
            margin-bottom: 12px;
            width: fit-content;
        }

        .activity-card__tag.hot {
            background: rgba(245, 166, 35, 0.18);
            color: var(--accent);
        }

        .activity-card__tag.new {
            background: rgba(6, 214, 160, 0.18);
            color: var(--success);
        }

        .activity-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .activity-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }

        .activity-card__meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-dim);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 14px;
            margin-top: auto;
        }

        .activity-card__meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .activity-card__btn {
            background: transparent;
            color: var(--primary-light);
            font-size: 14px;
            font-weight: 500;
            border: 1px solid var(--primary);
            border-radius: var(--radius-md);
            padding: 6px 16px;
            cursor: pointer;
            transition: var(--transition);
        }
        .activity-card__btn:hover {
            background: var(--primary);
            color: var(--text-white);
        }

        @media (max-width: 1024px) {
            .activity-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .activity-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding-left: 40px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), var(--success));
            border-radius: 2px;
        }

        .timeline__item {
            position: relative;
            margin-bottom: 36px;
            padding-left: 32px;
        }

        .timeline__item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 4px;
            width: 14px;
            height: 14px;
            background: var(--primary);
            border-radius: 50%;
            border: 3px solid var(--bg-dark);
            box-shadow: 0 0 0 2px var(--primary);
        }

        .timeline__item.active::before {
            background: var(--accent);
            box-shadow: 0 0 0 2px var(--accent), 0 0 16px rgba(245, 166, 35, 0.3);
        }

        .timeline__date {
            font-size: 13px;
            color: var(--text-dim);
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .timeline__date .badge {
            background: rgba(124, 92, 252, 0.18);
            color: var(--primary-light);
            padding: 2px 10px;
            border-radius: 10px;
            font-size: 11px;
        }

        .timeline__item h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .timeline__item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 640px) {
            .timeline {
                padding-left: 28px;
            }
            .timeline__item {
                padding-left: 20px;
            }
            .timeline__item::before {
                left: -22px;
                width: 12px;
                height: 12px;
            }
        }

        /* ===== Member Benefits ===== */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .benefit-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .benefit-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }

        .benefit-card__icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            background: rgba(124, 92, 252, 0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary-light);
            transition: var(--transition);
        }

        .benefit-card:hover .benefit-card__icon {
            background: var(--primary);
            color: var(--text-white);
        }

        .benefit-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .benefit-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .benefits-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.05);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            background: rgba(124, 92, 252, 0.06);
        }

        .faq-item.open {
            border-color: var(--primary);
            background: rgba(124, 92, 252, 0.06);
        }

        .faq-item__header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            user-select: none;
            transition: var(--transition);
        }

        .faq-item__header h3 {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-light);
            line-height: 1.5;
            flex: 1;
            padding-right: 16px;
        }

        .faq-item__icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            font-weight: 300;
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-item__icon {
            transform: rotate(45deg);
        }

        .faq-item__body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }

        .faq-item.open .faq-item__body {
            max-height: 500px;
        }

        .faq-item__body-inner {
            padding: 0 20px 16px;
            font-size: 15px;
            color: #C8D0E8;
            line-height: 1.7;
        }

        .faq-item__body-inner a {
            color: var(--primary-light);
            text-decoration: underline;
        }

        @media (max-width: 640px) {
            .faq-item__header {
                padding: 14px 16px;
            }
            .faq-item__header h3 {
                font-size: 15px;
            }
            .faq-item__body-inner {
                padding: 0 16px 14px;
                font-size: 14px;
            }
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: linear-gradient(135deg, #0B1424, #1A0A3E);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            border: 1px solid rgba(124, 92, 252, 0.15);
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 0%, rgba(124, 92, 252, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            position: relative;
        }

        .cta-banner p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
        }

        .cta-banner .btn-primary {
            display: inline-block;
            background: var(--accent);
            color: #0B1424;
            font-weight: 600;
            font-size: 20px;
            padding: 16px 48px;
            border-radius: var(--radius-md);
            box-shadow: 0 0 32px rgba(245, 166, 35, 0.35);
            transition: var(--transition);
            position: relative;
        }
        .cta-banner .btn-primary:hover {
            background: var(--accent-light);
            color: #0B1424;
            box-shadow: 0 0 56px rgba(245, 166, 35, 0.55);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-banner {
                padding: 40px 24px;
            }
            .cta-banner h2 {
                font-size: 26px;
            }
            .cta-banner p {
                font-size: 15px;
            }
            .cta-banner .btn-primary {
                font-size: 18px;
                padding: 14px 36px;
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .cta-banner h2 {
                font-size: 22px;
            }
        }

        /* ===== Stats Row ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 16px;
        }

        .stat-item {
            text-align: center;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px 16px;
            transition: var(--transition);
        }

        .stat-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            transform: translateY(-2px);
        }

        .stat-item__num {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-item__num .accent {
            color: var(--accent);
        }
        .stat-item__num .primary {
            color: var(--primary-light);
        }
        .stat-item__num .success {
            color: var(--success);
        }

        .stat-item__label {
            font-size: 14px;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-item__num {
                font-size: 28px;
            }
        }

        @media (max-width: 480px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item__num {
                font-size: 24px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: #070C18;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 48px 24px 24px;
        }

        .footer__grid {
            max-width: var(--container-max);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
        }

        .footer__brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer__brand .logo-char {
            color: var(--accent);
            font-size: 26px;
        }

        .footer__desc {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 320px;
        }

        .footer__social {
            display: flex;
            gap: 12px;
        }
        .footer__social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 18px;
            transition: var(--transition);
        }
        .footer__social a:hover {
            background: var(--primary);
            color: var(--text-white);
        }

        .footer__col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer__links a {
            font-size: 14px;
            color: var(--text-dim);
            transition: var(--transition);
        }
        .footer__links a:hover {
            color: var(--primary-light);
        }

        .footer__bottom {
            max-width: var(--container-max);
            margin: 32px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-dim);
            flex-wrap: wrap;
            gap: 8px;
        }

        @media (max-width: 1024px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 640px) {
            .footer {
                padding: 32px 16px 20px;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer__desc {
                max-width: 100%;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 32px;
        }
        .mb-8 {
            margin-bottom: 32px;
        }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

/* roulang page: category2 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary-dark: #0B1424;
            --primary-mid: #0F1A2E;
            --brand-purple: #7C5CFC;
            --brand-purple-light: #9B82FF;
            --brand-purple-glow: rgba(124, 92, 252, 0.35);
            --amber-gold: #F5A623;
            --amber-light: #FFC107;
            --jade-green: #06D6A0;
            --text-white: #FFFFFF;
            --text-light: #E0E6F6;
            --text-muted: #B0C4FF;
            --text-dim: #8896B8;
            --text-dark: #6B7A9F;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(124, 92, 252, 0.30);
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-card: rgba(255, 255, 255, 0.06);
            --glass-hover: rgba(124, 92, 252, 0.10);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 6px;
            --shadow-btn: 0 0 24px rgba(124, 92, 252, 0.40), 0 0 48px rgba(124, 92, 252, 0.15);
            --shadow-btn-hover: 0 0 36px rgba(124, 92, 252, 0.60), 0 0 64px rgba(124, 92, 252, 0.25);
            --font-sans: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            --max-container: 1280px;
            --gap-section: 80px;
            --gap-section-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.4s ease;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background: var(--primary-dark);
            color: var(--text-light);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            color: var(--brand-purple);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-purple-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-container);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 20, 36, 0.50);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .header.scrolled {
            background: rgba(11, 20, 36, 0.95);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.30);
        }
        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: var(--max-container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 24px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .header__logo .logo-char {
            color: var(--amber-gold);
            font-size: 28px;
        }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .header__nav a {
            font-size: 15px;
            color: var(--text-muted);
            font-weight: 500;
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .header__nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--brand-purple);
            border-radius: 2px;
            transition: width var(--transition-base);
        }
        .header__nav a:hover {
            color: var(--text-white);
        }
        .header__nav a:hover::after {
            width: 100%;
        }
        .header__nav a.active {
            color: var(--text-white);
        }
        .header__nav a.active::after {
            width: 100%;
            background: var(--brand-purple);
        }
        .header__actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header__search {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-btn);
            padding: 8px 14px;
            color: var(--text-light);
            font-size: 14px;
            width: 180px;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .header__search::placeholder {
            color: var(--text-dark);
        }
        .header__search:focus {
            border-color: var(--brand-purple);
            background: rgba(255, 255, 255, 0.08);
        }
        .header__cta {
            background: var(--amber-gold);
            color: var(--primary-dark);
            font-weight: 600;
            font-size: 14px;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            box-shadow: 0 0 12px rgba(245, 166, 35, 0.25);
            cursor: pointer;
            line-height: 1.4;
            white-space: nowrap;
        }
        .header__cta:hover {
            background: var(--amber-light);
            box-shadow: 0 0 24px rgba(245, 166, 35, 0.40);
            transform: translateY(-1px);
            color: var(--primary-dark);
        }
        .header__burger {
            display: none;
            background: none;
            color: var(--text-white);
            font-size: 26px;
            cursor: pointer;
            padding: 4px;
            line-height: 1;
        }
        @media (max-width: 1024px) {
            .header__search {
                width: 130px;
            }
            .header__nav {
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            .header__inner {
                height: 64px;
                padding: 0 16px;
            }
            .header__logo {
                font-size: 20px;
            }
            .header__logo .logo-char {
                font-size: 24px;
            }
            .header__nav {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 20, 36, 0.98);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                gap: 0;
                padding: 16px 24px 32px;
                border-bottom: 1px solid var(--border-subtle);
                box-shadow: 0 8px 40px rgba(0, 0, 0, 0.40);
            }
            .header__nav.open {
                display: flex;
            }
            .header__nav a {
                padding: 14px 0;
                font-size: 16px;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }
            .header__nav a:last-child {
                border-bottom: none;
            }
            .header__nav a::after {
                display: none;
            }
            .header__nav a.active {
                color: var(--brand-purple);
            }
            .header__search {
                display: none;
            }
            .header__cta {
                font-size: 13px;
                padding: 6px 16px;
            }
            .header__burger {
                display: block;
            }
        }
        @media (max-width: 480px) {
            .header__inner {
                height: 58px;
            }
            .header__logo {
                font-size: 18px;
            }
            .header__logo .logo-char {
                font-size: 22px;
            }
            .header__cta {
                font-size: 12px;
                padding: 5px 14px;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: linear-gradient(135deg, rgba(11, 20, 36, 0.88), rgba(124, 92, 252, 0.35)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(124, 92, 252, 0.15), transparent 60%);
            pointer-events: none;
        }
        .hero__content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero__title {
            font-size: 48px;
            font-weight: 700;
            color: var(--text-white);
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .hero__sub {
            font-size: 18px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero__cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--amber-gold);
            color: var(--primary-dark);
            font-weight: 600;
            font-size: 18px;
            padding: 16px 40px;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-btn);
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            cursor: pointer;
            line-height: 1.4;
        }
        .hero__cta:hover {
            background: var(--amber-light);
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-2px);
            color: var(--primary-dark);
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 380px;
                padding: 100px 16px 60px;
            }
            .hero__title {
                font-size: 32px;
            }
            .hero__sub {
                font-size: 16px;
            }
            .hero__cta {
                font-size: 16px;
                padding: 14px 32px;
            }
        }
        @media (max-width: 480px) {
            .hero__title {
                font-size: 26px;
            }
            .hero__sub {
                font-size: 14px;
            }
            .hero__cta {
                font-size: 14px;
                padding: 12px 28px;
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--gap-section) 0;
        }
        .section__title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section__sub {
            font-size: 16px;
            color: var(--text-muted);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section__title-bar {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .section__title-bar::before {
            content: '';
            width: 48px;
            height: 4px;
            background: var(--brand-purple);
            border-radius: 4px;
            flex-shrink: 0;
        }
        .section__title-bar::after {
            content: '';
            width: 48px;
            height: 4px;
            background: var(--brand-purple);
            border-radius: 4px;
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--gap-section-mobile) 0;
            }
            .section__title {
                font-size: 28px;
            }
            .section__sub {
                font-size: 15px;
                margin-bottom: 32px;
            }
            .section__title-bar::before,
            .section__title-bar::after {
                width: 32px;
            }
        }
        @media (max-width: 480px) {
            .section__title {
                font-size: 24px;
            }
        }

        /* ===== 时间线 ===== */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding: 20px 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--brand-purple), var(--jade-green));
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .timeline__item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 48px;
            position: relative;
        }
        .timeline__item:last-child {
            margin-bottom: 0;
        }
        .timeline__item:nth-child(odd) {
            flex-direction: row;
        }
        .timeline__item:nth-child(even) {
            flex-direction: row-reverse;
        }
        .timeline__dot {
            position: absolute;
            left: 50%;
            top: 8px;
            width: 18px;
            height: 18px;
            background: var(--brand-purple);
            border: 4px solid var(--primary-dark);
            border-radius: 50%;
            transform: translateX(-50%);
            z-index: 2;
            box-shadow: 0 0 16px rgba(124, 92, 252, 0.40);
        }
        .timeline__dot.is-amber {
            background: var(--amber-gold);
            box-shadow: 0 0 16px rgba(245, 166, 35, 0.40);
        }
        .timeline__dot.is-jade {
            background: var(--jade-green);
            box-shadow: 0 0 16px rgba(6, 214, 160, 0.40);
        }
        .timeline__card {
            width: calc(50% - 40px);
            background: var(--glass-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: all var(--transition-base);
        }
        .timeline__card:hover {
            background: var(--glass-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }
        .timeline__card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
            flex-wrap: wrap;
            gap: 8px;
        }
        .timeline__game-name {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-white);
        }
        .timeline__badge {
            display: inline-block;
            background: rgba(124, 92, 252, 0.20);
            color: var(--brand-purple-light);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .timeline__badge.is-hot {
            background: rgba(245, 166, 35, 0.20);
            color: var(--amber-gold);
        }
        .timeline__meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: var(--text-dim);
            margin-bottom: 12px;
        }
        .timeline__meta i {
            margin-right: 4px;
            color: var(--brand-purple);
        }
        .timeline__desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .timeline__btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--brand-purple);
            color: var(--text-white);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            cursor: pointer;
            line-height: 1.4;
        }
        .timeline__btn:hover {
            background: var(--brand-purple-light);
            box-shadow: 0 0 20px var(--brand-purple-glow);
            transform: translateY(-2px);
            color: var(--text-white);
        }
        .timeline__btn.is-amber {
            background: var(--amber-gold);
            color: var(--primary-dark);
        }
        .timeline__btn.is-amber:hover {
            background: var(--amber-light);
            box-shadow: 0 0 20px rgba(245, 166, 35, 0.40);
            color: var(--primary-dark);
        }
        @media (max-width: 768px) {
            .timeline::before {
                left: 20px;
            }
            .timeline__item,
            .timeline__item:nth-child(even) {
                flex-direction: row;
                padding-left: 48px;
            }
            .timeline__dot {
                left: 20px;
                top: 12px;
                width: 14px;
                height: 14px;
                border-width: 3px;
            }
            .timeline__card {
                width: 100%;
                padding: 20px;
            }
            .timeline__game-name {
                font-size: 18px;
            }
        }
        @media (max-width: 480px) {
            .timeline__card {
                padding: 16px;
            }
            .timeline__game-name {
                font-size: 16px;
            }
            .timeline__desc {
                font-size: 14px;
            }
            .timeline__meta {
                font-size: 13px;
                gap: 10px;
            }
            .timeline__btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            max-width: 1000px;
            margin: 0 auto;
        }
        .step {
            text-align: center;
            background: var(--glass-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            padding: 36px 24px 32px;
            transition: all var(--transition-base);
            position: relative;
        }
        .step:hover {
            background: var(--glass-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }
        .step__num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-purple), #5A3FD4);
            color: var(--text-white);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 20px;
            box-shadow: 0 0 20px var(--brand-purple-glow);
        }
        .step__title {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .step__desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps {
                grid-template-columns: 1fr;
                gap: 20px;
                max-width: 480px;
            }
            .step {
                padding: 28px 20px 24px;
            }
            .step__title {
                font-size: 18px;
            }
        }

        /* ===== 特权卡片 ===== */
        .perks {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            max-width: 1000px;
            margin: 0 auto;
        }
        .perk {
            background: var(--glass-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            padding: 32px 24px 28px;
            text-align: center;
            transition: all var(--transition-base);
        }
        .perk:hover {
            background: var(--glass-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }
        .perk__icon {
            font-size: 40px;
            color: var(--brand-purple);
            margin-bottom: 16px;
            display: inline-block;
        }
        .perk__icon.is-amber {
            color: var(--amber-gold);
        }
        .perk__icon.is-jade {
            color: var(--jade-green);
        }
        .perk__title {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .perk__desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .perks {
                grid-template-columns: 1fr;
                gap: 20px;
                max-width: 480px;
            }
            .perk {
                padding: 24px 20px 20px;
            }
            .perk__title {
                font-size: 18px;
            }
        }

        /* ===== FAQ ===== */
        .faq {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq__item {
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            border: 1px solid transparent;
            transition: border-color var(--transition-base), background var(--transition-base);
        }
        .faq__item:hover {
            background: rgba(124, 92, 252, 0.06);
        }
        .faq__item.open {
            border-color: var(--brand-purple);
            background: rgba(124, 92, 252, 0.06);
        }
        .faq__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-light);
            user-select: none;
            transition: color var(--transition-fast);
        }
        .faq__question:hover {
            color: var(--text-white);
        }
        .faq__icon {
            font-size: 20px;
            color: var(--brand-purple);
            transition: transform var(--transition-base);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq__item.open .faq__icon {
            transform: rotate(45deg);
        }
        .faq__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
        }
        .faq__item.open .faq__answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq__answer p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .faq__question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq__item.open .faq__answer {
                padding: 0 16px 16px;
            }
        }
        @media (max-width: 480px) {
            .faq__question {
                font-size: 14px;
                padding: 12px 14px;
            }
            .faq__answer p {
                font-size: 14px;
            }
        }

        /* ===== CTA 条 ===== */
        .cta-band {
            background: linear-gradient(135deg, #0B1424, #1A0A3E);
            padding: 72px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(124, 92, 252, 0.12), transparent 70%);
            pointer-events: none;
        }
        .cta-band__inner {
            position: relative;
            z-index: 2;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-band__title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-band__sub {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-band__btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--amber-gold);
            color: var(--primary-dark);
            font-weight: 600;
            font-size: 20px;
            padding: 20px 52px;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-btn);
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            cursor: pointer;
            line-height: 1.4;
            min-height: 72px;
        }
        .cta-band__btn:hover {
            background: var(--amber-light);
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-2px);
            color: var(--primary-dark);
        }
        @media (max-width: 768px) {
            .cta-band {
                padding: 52px 16px;
            }
            .cta-band__title {
                font-size: 28px;
            }
            .cta-band__btn {
                font-size: 18px;
                padding: 16px 36px;
                min-height: 60px;
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .cta-band__title {
                font-size: 24px;
            }
            .cta-band__sub {
                font-size: 14px;
            }
            .cta-band__btn {
                font-size: 16px;
                padding: 14px 28px;
                min-height: 52px;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #070C18;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 24px 24px;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: var(--max-container);
            margin: 0 auto 32px;
        }
        .footer__brand {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer__brand .logo-char {
            color: var(--amber-gold);
            font-size: 26px;
        }
        .footer__desc {
            font-size: 14px;
            color: var(--text-dark);
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 20px;
        }
        .footer__social {
            display: flex;
            gap: 16px;
        }
        .footer__social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-dim);
            font-size: 18px;
            transition: all var(--transition-fast);
        }
        .footer__social a:hover {
            background: var(--brand-purple);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .footer__col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer__links a {
            font-size: 14px;
            color: var(--text-dark);
            transition: color var(--transition-fast);
        }
        .footer__links a:hover {
            color: var(--brand-purple-light);
        }
        .footer__bottom {
            max-width: var(--max-container);
            margin: 0 auto;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dark);
        }
        @media (max-width: 1024px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .footer {
                padding: 36px 16px 20px;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer__desc {
                max-width: 100%;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

        /* ===== 背景装饰 ===== */
        .bg-stars {
            position: absolute;
            inset: 0;
            pointer-events: none;
            overflow: hidden;
        }
        .bg-stars span {
            position: absolute;
            width: 2px;
            height: 2px;
            background: rgba(255, 255, 255, 0.30);
            border-radius: 50%;
            animation: twinkle 3s infinite alternate;
        }
        @keyframes twinkle {
            0% {
                opacity: 0.20;
            }
            100% {
                opacity: 0.80;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            .hero__title {
                font-size: 32px;
            }
            .section__title {
                font-size: 28px;
            }
        }
        @media (max-width: 480px) {
            .hero__title {
                font-size: 26px;
            }
            .section__title {
                font-size: 24px;
            }
            .container {
                padding: 0 12px;
            }
        }