/* roulang page: index */
:root {
            --primary: #00D4B0;
            --primary-glow: rgba(0, 212, 176, 0.35);
            --secondary: #1B6DF2;
            --bg-dark: #070D16;
            --bg-dark-2: #0B1420;
            --text-main: #F8FAFC;
            --text-body: #B0BCCB;
            --text-dim: #6B7A90;
            --border-glass: rgba(255, 255, 255, 0.08);
            --radius-lg: 20px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .glass-card {
            background: rgba(13, 22, 34, 0.65);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            border-radius: var(--radius-md);
            transition: all 0.4s ease;
        }

        .glass-card:hover {
            border-color: rgba(0, 212, 176, 0.25);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 212, 176, 0.08);
            transform: translateY(-2px);
        }

        .btn-glow-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #00E0C6, #00B894);
            color: #052E2A;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 0 20px rgba(0, 212, 176, 0.35), 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-glow-main:hover {
            box-shadow: 0 0 35px rgba(0, 212, 176, 0.55), 0 6px 20px rgba(0, 0, 0, 0.25);
            transform: translateY(-2px);
        }

        .btn-glow-main:active {
            transform: translateY(1px);
            box-shadow: 0 0 20px rgba(0, 212, 176, 0.4);
        }

        .btn-glow-main:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-glow-sub {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-glow-sub:hover {
            background: rgba(0, 212, 176, 0.1);
            border-color: rgba(0, 212, 176, 0.35);
        }

        .btn-glow-sub:active {
            transform: translateY(1px);
        }

        .btn-glow-sub:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .nav-blur {
            background: rgba(7, 13, 22, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.4s ease;
        }

        .nav-link {
            position: relative;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: all 0.3s ease;
            display: inline-block;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width 0.3s ease;
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link:hover::after {
            width: 60%;
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(0, 212, 176, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 212, 176, 0.3);
        }

        .nav-link.active::after {
            width: 60%;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0, 212, 176, 0.08);
            border: 1px solid rgba(0, 212, 176, 0.25);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .text-gradient-cyan {
            background: linear-gradient(135deg, #FFFFFF 20%, #00E0C6 80%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-grid-bg {
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 48px 48px;
        }

        .hero-grid-bg::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 70% 50%, rgba(0, 212, 176, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(0, 212, 176, 0.1);
            border: 1px solid rgba(0, 212, 176, 0.2);
            color: var(--primary);
        }

        .badge-amber {
            background: rgba(245, 166, 35, 0.12);
            border-color: rgba(245, 166, 35, 0.25);
            color: #F5A623;
        }

        .badge-dim {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(255, 255, 255, 0.1);
            color: var(--text-dim);
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.75;
        }

        .floating-cta {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 100;
            border-radius: 999px;
            background: linear-gradient(135deg, #00E0C6, #00B894);
            color: #052E2A;
            box-shadow: 0 0 25px rgba(0, 212, 176, 0.45);
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .floating-cta:hover {
            transform: scale(1.05);
            box-shadow: 0 0 40px rgba(0, 212, 176, 0.6);
        }

        .floating-cta::before {
            content: '';
            position: absolute;
            inset: -4px;
            border-radius: 999px;
            border: 2px solid rgba(0, 212, 176, 0.3);
            animation: pulse-ripple 2s infinite;
        }

        @keyframes pulse-ripple {
            0% {
                transform: scale(1);
                opacity: 0.6;
            }
            70% {
                transform: scale(1.2);
                opacity: 0;
            }
            100% {
                opacity: 0;
            }
        }

        details.glass-card summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            color: var(--text-main);
            transition: all 0.3s ease;
        }

        details.glass-card summary::-webkit-details-marker {
            display: none;
        }

        details.glass-card summary .icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 212, 176, 0.1);
            border: 1px solid rgba(0, 212, 176, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

        details.glass-card[open] summary .icon {
            transform: rotate(45deg);
        }

        details.glass-card .content {
            padding: 0 24px 20px;
            color: var(--text-body);
            font-size: 14px;
            line-height: 1.75;
        }

        .footer-link {
            color: var(--text-body);
            font-size: 14px;
            transition: color 0.3s ease;
            display: inline-block;
            padding: 4px 0;
        }

        .footer-link:hover {
            color: var(--primary);
        }

        .pricing-recommended {
            position: relative;
            border: 1px solid rgba(0, 212, 176, 0.35);
            box-shadow: 0 0 40px rgba(0, 212, 176, 0.1), var(--shadow-card);
        }

        .pricing-recommended::before {
            content: '';
            position: absolute;
            top: -1px;
            left: -1px;
            right: -1px;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }

        .data-scroll-bar {
            position: relative;
            overflow: hidden;
        }

        .data-scroll-bar::after {
            content: '';
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 80px;
            background: linear-gradient(to left, rgba(7, 13, 22, 0.9), transparent);
            pointer-events: none;
        }

        @keyframes scroll-marquee {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }

        .marquee-track {
            animation: scroll-marquee 30s linear infinite;
        }

        @media (max-width: 768px) {
            .container-main {
                padding: 0 16px;
            }
            .section-title {
                font-size: 24px;
            }
            .btn-glow-main,
            .btn-glow-sub {
                padding: 10px 20px;
                font-size: 14px;
                width: 100%;
            }
            .floating-cta {
                bottom: 20px;
                right: 20px;
                width: 52px;
                height: 52px;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 22px;
            }
            .section-desc {
                font-size: 15px;
            }
            .btn-glow-main,
            .btn-glow-sub {
                flex-direction: column;
            }
        }

/* roulang page: article */
:root {
            --dark: #070D16;
            --dark-2: #0B1420;
            --primary: #00D4B0;
            --primary-light: #00E0C6;
            --secondary: #1B6DF2;
            --text: #F8FAFC;
            --text-body: #B0BCCB;
            --text-dim: #6B7A90;
            --border: rgba(255, 255, 255, 0.08);
            --radius-lg: 20px;
            --radius-md: 12px;
            --shadow-glow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--dark);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        ::selection {
            background: rgba(0, 212, 176, 0.3);
            color: #fff;
        }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .nav-blur {
            background: rgba(7, 13, 22, 0.75);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: background 0.3s;
        }

        .nav-link {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            border: 1px solid transparent;
            transition: all 0.2s;
        }

        .nav-link:hover {
            color: var(--text);
            border-color: rgba(0, 212, 176, 0.35);
            background: rgba(0, 212, 176, 0.08);
        }

        .nav-link.active {
            color: var(--text);
            background: rgba(0, 212, 176, 0.12);
            border-color: rgba(0, 212, 176, 0.4);
        }

        .btn-glow-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 26px;
            border-radius: 12px;
            background: linear-gradient(135deg, #00D4B0, #1B6DF2);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            box-shadow: 0 0 22px rgba(0, 212, 176, 0.25);
            transition: all 0.25s;
            cursor: pointer;
            line-height: 1.2;
        }

        .btn-glow-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 34px rgba(0, 212, 176, 0.5);
        }

        .btn-glow-main:active {
            transform: translateY(0);
        }

        .btn-glow-main:focus-visible,
        .nav-link:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-glow-sub {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: var(--text);
            font-weight: 500;
            font-size: 14px;
            transition: all 0.25s;
        }

        .btn-glow-sub:hover {
            background: rgba(0, 212, 176, 0.08);
            border-color: rgba(0, 212, 176, 0.4);
            color: var(--primary-light);
        }

        /* ===== 玻璃卡片 ===== */
        .glass-card {
            background: rgba(13, 22, 34, 0.65);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-radius: 20px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            transition: border-color 0.25s, box-shadow 0.25s;
        }

        .glass-card:hover {
            border-color: rgba(0, 212, 176, 0.25);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 212, 176, 0.06);
        }

        /* ===== 标签 ===== */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: rgba(0, 212, 176, 0.1);
            border: 1px solid rgba(0, 212, 176, 0.25);
            letter-spacing: 0.03em;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.08em;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0, 212, 176, 0.08);
            border: 1px solid rgba(0, 212, 176, 0.25);
        }

        .text-gradient-cyan {
            background: linear-gradient(120deg, #fff 20%, #00D4B0 70%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-dim);
        }

        .breadcrumb a {
            color: var(--text-dim);
            transition: color 0.2s;
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.2);
        }

        .breadcrumb .current {
            color: var(--text-body);
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== 文章正文排版 ===== */
        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            word-break: break-word;
        }

        .article-content h1,
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text);
            font-weight: 700;
            line-height: 1.4;
            margin-top: 40px;
            margin-bottom: 16px;
        }

        .article-content h1 {
            font-size: 28px;
        }

        .article-content h2 {
            font-size: 23px;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            border-radius: 2px;
        }

        .article-content h3 {
            font-size: 19px;
            margin-top: 30px;
        }

        .article-content h4 {
            font-size: 17px;
        }

        .article-content p {
            margin-bottom: 20px;
            line-height: 1.85;
        }

        .article-content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 4px;
            transition: opacity 0.2s;
        }

        .article-content a:hover {
            opacity: 0.8;
        }

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

        .article-content li {
            margin-bottom: 8px;
            line-height: 1.8;
        }

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

        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(0, 212, 176, 0.06);
            padding: 16px 22px;
            border-radius: 0 14px 14px 0;
            margin: 28px 0;
            color: var(--text);
        }

        .article-content img {
            border-radius: 16px;
            margin: 24px 0;
            border: 1px solid var(--border);
        }

        .article-content figure {
            margin: 24px 0;
        }

        .article-content figcaption {
            font-size: 13px;
            color: var(--text-dim);
            text-align: center;
            margin-top: 10px;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }

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

        .article-content th {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text);
        }

        .article-content hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 36px 0;
        }

        .article-content code {
            background: rgba(27, 109, 242, 0.15);
            color: #92C7FF;
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
        }

        .article-content iframe {
            border-radius: 16px;
            border: 1px solid var(--border);
            margin: 24px 0;
            width: 100%;
        }

        /* ===== 浮动 CTA ===== */
        .float-cta {
            animation: glowPulse 2.6s ease-in-out infinite;
        }

        @keyframes glowPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(0, 212, 176, 0.3);
            }
            50% {
                box-shadow: 0 0 44px rgba(0, 212, 176, 0.6);
            }
        }

        /* ===== 入场动画 ===== */
        .article-enter {
            animation: fadeUp 0.6s ease-out both;
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .banner-grid-bg {
            background-image: linear-gradient(rgba(0, 212, 176, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 212, 176, 0.05) 1px, transparent 1px);
            background-size: 44px 44px;
        }

        /* ===== 页脚 ===== */
        .footer-link {
            color: var(--text-body);
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-link:hover {
            color: var(--primary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 768px) {
            .container-site {
                padding: 0 16px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 20px;
            }
        }

        @media (max-width: 480px) {
            .breadcrumb .current {
                max-width: 180px;
            }
        }

/* roulang page: category1 */
:root {
  --primary: #00D4B0;
  --secondary: #2F7FFA;
  --bg-dark: #070D16;
  --bg-dark2: #0B1420;
  --text: #F8FAFC;
  --text-body: #B0BCCB;
  --text-dim: #6B7A90;
  --card-bg: rgba(15, 25, 40, 0.5);
  --card-border: rgba(255, 255, 255, 0.08);
  --radius: 18px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg-dark);
  color: var(--text-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; }
i { font-style: normal; }

.nav-blur {
  background: rgba(7, 13, 22, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.nav-link {
  display: inline-block;
  padding: 7px 16px;
  border-radius: 9999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  border: 1px solid transparent;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--primary);
  border-color: rgba(0, 212, 176, 0.3);
  background: rgba(0, 212, 176, 0.06);
}
.nav-link.active {
  color: var(--primary);
  border-color: rgba(0, 212, 176, 0.4);
  background: rgba(0, 212, 176, 0.09);
  font-weight: 600;
}

.btn-glow-main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  color: #070D16;
  background: linear-gradient(135deg, #00D4B0 0%, #00E0C6 100%);
  box-shadow: 0 0 20px rgba(0, 212, 176, 0.35);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.btn-glow-main:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 34px rgba(0, 212, 176, 0.55);
}
.btn-glow-main:active { transform: translateY(1px); }
.btn-glow-main:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.btn-glow-sub {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  color: #F8FAFC;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn-glow-sub:hover {
  border-color: rgba(0, 212, 176, 0.5);
  background: rgba(0, 212, 176, 0.08);
  color: var(--primary);
}
.btn-glow-sub:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.glass-card {
  background: rgba(13, 22, 34, 0.65);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.glass-card:hover {
  border-color: rgba(0, 212, 176, 0.4);
  box-shadow: 0 8px 40px rgba(0, 212, 176, 0.12), 0 8px 32px rgba(0, 0, 0, 0.4);
  transform: translateY(-4px);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(0, 212, 176, 0.08);
  border: 1px solid rgba(0, 212, 176, 0.25);
  letter-spacing: 0.04em;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, #F8FAFC 0%, #00D4B0 90%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-grid-bg {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
}

.footer-link {
  color: var(--text-body);
  font-size: 14px;
  transition: color 0.3s ease;
}
.footer-link:hover { color: var(--primary); }

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 176, 0.35); }
  50% { box-shadow: 0 0 44px rgba(0, 212, 176, 0.65); }
}
.pulse-glow-anim { animation: pulseGlow 2.6s ease-in-out infinite; }

@keyframes scanMove {
  0% { top: -80px; }
  100% { top: 110%; }
}
.scan-line {
  position: absolute;
  width: 100%;
  height: 80px;
  background: linear-gradient(to bottom, transparent, rgba(0, 212, 176, 0.07), transparent);
  animation: scanMove 7s linear infinite;
  pointer-events: none;
  z-index: 2;
}

details.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  background: rgba(13, 22, 34, 0.55);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
details.faq-item:hover { border-color: rgba(0, 212, 176, 0.2); }
details.faq-item[open] {
  border-color: rgba(0, 212, 176, 0.35);
  box-shadow: 0 0 24px rgba(0, 212, 176, 0.05);
}
details.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  color: #F8FAFC;
  font-size: 16px;
  transition: color 0.3s;
}
details.faq-item summary:hover { color: var(--primary); }
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item .faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--primary);
  transition: transform 0.35s ease;
}
details.faq-item[open] summary .faq-icon { transform: rotate(45deg); }
details.faq-item .faq-answer {
  padding: 0 24px 22px;
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.85;
}

.mobile-fab span { display: inline; }
@media (max-width: 640px) {
  .mobile-fab {
    width: 54px !important;
    height: 54px !important;
    border-radius: 50% !important;
    padding: 0 !important;
    justify-content: center !important;
  }
  .mobile-fab span { display: none !important; }
  .mobile-fab i { font-size: 20px; }
}

@media (max-width: 640px) {
  .btn-glow-main, .btn-glow-sub {
    padding: 12px 20px;
    font-size: 14px;
  }
}

.overflow-x-auto::-webkit-scrollbar { height: 4px; }
.overflow-x-auto::-webkit-scrollbar-thumb { background: rgba(0, 212, 176, 0.3); border-radius: 4px; }

/* roulang page: category2 */
:root {
            --primary: #00D4B0;
            --secondary: #1B6DF2;
            --bg-dark: #070D16;
            --bg-dark-2: #0B1420;
            --text-light: #F8FAFC;
            --text-body: #B0BCCB;
            --text-dim: #6B7A90;
            --radius-card: 18px;
            --radius-btn: 12px;
            --shadow-glow: rgba(0, 212, 176, 0.35);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.75;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        ::selection {
            background: rgba(0, 212, 176, 0.3);
            color: #fff;
        }
        .nav-blur {
            background: rgba(7, 13, 22, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .nav-link {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 16px;
            border-radius: 999px;
            border: 1px solid transparent;
            transition: all 0.25s ease;
        }
        .nav-link:hover {
            color: var(--text-light);
            border-color: rgba(0, 212, 176, 0.25);
            background: rgba(0, 212, 176, 0.06);
        }
        .nav-link.active {
            color: var(--text-light);
            border-color: rgba(0, 212, 176, 0.45);
            background: rgba(0, 212, 176, 0.12);
            box-shadow: 0 0 16px rgba(0, 212, 176, 0.1);
        }
        .btn-glow-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #00D4B0 0%, #00A88F 50%, #00C2A5 100%);
            color: #071018;
            font-size: 14px;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: 12px;
            box-shadow: 0 4px 24px rgba(0, 212, 176, 0.35);
            border: none;
            letter-spacing: 0.02em;
            transition: all 0.3s ease;
        }
        .btn-glow-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 212, 176, 0.55);
            color: #071018;
        }
        .btn-glow-main:active {
            transform: translateY(1px);
            box-shadow: 0 2px 12px rgba(0, 212, 176, 0.3);
        }
        .btn-glow-main:focus-visible {
            outline: 2px solid #00D4B0;
            outline-offset: 3px;
        }
        .btn-glow-sub {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-light);
            font-size: 14px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
        }
        .btn-glow-sub:hover {
            background: rgba(0, 212, 176, 0.12);
            border-color: rgba(0, 212, 176, 0.4);
            transform: translateY(-2px);
        }
        .btn-glow-sub:focus-visible {
            outline: 2px solid #00D4B0;
            outline-offset: 3px;
        }
        .glass-card {
            background: rgba(13, 22, 34, 0.65);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 18px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            transition: all 0.35s ease;
        }
        .glass-card:hover {
            border-color: rgba(0, 212, 176, 0.3);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 32px rgba(0, 212, 176, 0.08);
        }
        .text-gradient-cyan {
            background: linear-gradient(120deg, #F8FAFC 30%, #00D4B0 80%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 212, 176, 0.1);
            border: 1px solid rgba(0, 212, 176, 0.25);
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-link {
            font-size: 14px;
            color: var(--text-dim);
            transition: all 0.2s ease;
        }
        .footer-link:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .hero-grid-bg {
            background-image: linear-gradient(rgba(0, 212, 176, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 212, 176, 0.04) 1px, transparent 1px);
            background-size: 42px 42px;
        }
        .card-shadow-glow {
            box-shadow: 0 0 0 1px rgba(0, 212, 176, 0.15), 0 20px 48px rgba(0, 0, 0, 0.5), 0 4px 20px rgba(0, 212, 176, 0.06);
        }
        .bento-card-large {
            background: linear-gradient(135deg, rgba(0, 212, 176, 0.08) 0%, rgba(13, 22, 34, 0.65) 60%);
        }
        .text-glow-primary {
            text-shadow: 0 0 24px rgba(0, 212, 176, 0.5);
        }
        .divider-light {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 212, 176, 0.2), transparent);
        }
        .pricing-highlight {
            position: relative;
            overflow: hidden;
        }
        .pricing-highlight::before {
            content: "";
            position: absolute;
            top: 0;
            left: -60%;
            width: 40%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 212, 176, 0.12), transparent);
            transform: skewX(-20deg);
            animation: beamSlide 3s ease-in-out infinite;
        }
        @keyframes beamSlide {
            0% {
                left: -60%;
            }
            50%,
            100% {
                left: 130%;
            }
        }
        details.faq-item summary {
            list-style: none;
            cursor: pointer;
        }
        details.faq-item summary::-webkit-details-marker {
            display: none;
        }
        details.faq-item summary .faq-icon {
            transition: transform 0.3s ease;
        }
        details.faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .footer-glow {
            background: linear-gradient(180deg, transparent, rgba(0, 212, 176, 0.04));
        }
        .number-tabular {
            font-variant-numeric: tabular-nums;
        }
        @media (max-width: 767px) {
            .btn-glow-main,
            .btn-glow-sub {
                width: 100%;
                padding: 12px 20px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .btn-glow-main,
            .btn-glow-sub {
                padding: 10px 22px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #00D4B0;
            --primary-dark: #00B894;
            --secondary: #1B6DF2;
            --bg-dark: #070D16;
            --bg-dark-2: #0B1420;
            --text: #F8FAFC;
            --text-body: #B0BCCB;
            --text-dim: #6B7A90;
            --border: rgba(255, 255, 255, 0.08);
            --radius: 16px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --glow: rgba(0, 212, 176, 0.35);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            background: var(--bg-dark);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-x {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .glass-card {
            background: rgba(13, 22, 34, 0.65);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            border-radius: 16px;
            transition: all 0.3s ease;
        }
        .glass-card:hover {
            border-color: rgba(0, 212, 176, 0.35);
            box-shadow: 0 8px 40px rgba(0, 212, 176, 0.12);
            transform: translateY(-4px);
        }
        .btn-glow-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: 12px;
            background: linear-gradient(135deg, #00D4B0, #00B894);
            color: #070D16;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 4px 24px rgba(0, 212, 176, 0.35);
            transition: all 0.3s ease;
            border: none;
            line-height: 1.2;
        }
        .btn-glow-main:hover {
            box-shadow: 0 8px 32px rgba(0, 212, 176, 0.55);
            transform: translateY(-2px);
            color: #070D16;
        }
        .btn-glow-main:active {
            transform: translateY(0);
            box-shadow: 0 2px 16px rgba(0, 212, 176, 0.4);
        }
        .btn-glow-main:focus-visible {
            outline: 2px solid rgba(0, 212, 176, 0.6);
            outline-offset: 2px;
        }
        .btn-glow-sub {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #F8FAFC;
            font-weight: 600;
            font-size: 15px;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
            line-height: 1.2;
        }
        .btn-glow-sub:hover {
            background: rgba(0, 212, 176, 0.1);
            border-color: rgba(0, 212, 176, 0.4);
            color: #F8FAFC;
        }
        .btn-glow-sub:focus-visible {
            outline: 2px solid rgba(0, 212, 176, 0.5);
            outline-offset: 2px;
        }
        .nav-blur {
            background: rgba(7, 13, 22, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .nav-link {
            display: inline-block;
            padding: 8px 14px;
            border-radius: 8px;
            color: #B0BCCB;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #F8FAFC;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: #00D4B0;
            background: rgba(0, 212, 176, 0.1);
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0, 212, 176, 0.1);
            border: 1px solid rgba(0, 212, 176, 0.25);
            color: #00D4B0;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .text-gradient-cyan {
            background: linear-gradient(90deg, #F8FAFC 0%, #00D4B0 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .footer-link {
            color: #6B7A90;
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: #00D4B0;
        }
        .hero-grid-bg {
            background-image:
                linear-gradient(rgba(0, 212, 176, 0.06) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 212, 176, 0.06) 1px, transparent 1px);
            background-size: 40px 40px;
        }
        .btn-float {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #00D4B0, #00B894);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 24px rgba(0, 212, 176, 0.4);
            animation: pulse-glow 2s infinite;
            transition: transform 0.3s ease;
            color: #070D16;
        }
        .btn-float:hover {
            transform: scale(1.05);
        }
        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 4px 24px rgba(0, 212, 176, 0.4);
            }
            50% {
                box-shadow: 0 4px 36px rgba(0, 212, 176, 0.6);
            }
        }
        .step-line {
            position: relative;
        }
        .step-line:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 32px;
            right: -1rem;
            width: 2rem;
            height: 2px;
            background: linear-gradient(90deg, rgba(0, 212, 176, 0.3), rgba(27, 109, 242, 0.2));
        }
        @media (max-width: 767px) {
            .step-line:not(:last-child)::after {
                display: none;
            }
        }
        details summary::-webkit-details-marker {
            display: none;
        }
        details summary {
            list-style: none;
        }
        .faq-card summary {
            transition: border-color 0.3s ease;
        }
        .faq-card[open] summary {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .bento-card {
            position: relative;
            overflow: hidden;
        }
        .bento-card::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 60px;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(0, 212, 176, 0.7));
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .bento-card:hover::before {
            opacity: 1;
        }
        .cover-img {
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card-group:hover .cover-img {
            transform: scale(1.04);
        }
        .card-img-wrap {
            overflow: hidden;
            border-radius: 12px;
        }
        .header-card {
            background: linear-gradient(135deg, rgba(0, 212, 176, 0.08), rgba(27, 109, 242, 0.05));
            border: 1px solid rgba(0, 212, 176, 0.15);
        }
        .theme-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(0, 212, 176, 0.12);
            color: #00D4B0;
            border: 1px solid rgba(0, 212, 176, 0.2);
        }
        .badge-secondary {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(27, 109, 242, 0.15);
            color: #8EB8FF;
            border: 1px solid rgba(27, 109, 242, 0.25);
        }
        .badge-amber {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(245, 166, 35, 0.15);
            color: #F5A623;
            border: 1px solid rgba(245, 166, 35, 0.25);
        }
        .stat-num {
            font-variant-numeric: tabular-nums;
            font-feature-settings: "tnum";
        }
        .section-pad {
            padding-top: 96px;
            padding-bottom: 96px;
        }
        @media (max-width: 767px) {
            .section-pad {
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }
        .content-wrap {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        @media (min-width: 640px) {
            .content-wrap {
                padding: 0 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .content-wrap {
                padding: 0 2rem;
            }
        }