/* roulang page: index */
:root {
            --bg-base: #060b14;
            --bg-surface: #0c1626;
            --bg-card: rgba(16, 29, 50, 0.7);
            --bg-card-hover: rgba(23, 41, 71, 0.85);
            --primary: #1e6fff;
            --primary-light: #5292ff;
            --primary-glow: rgba(30, 111, 255, 0.4);
            --accent: #ff4757;
            --accent-glow: rgba(255, 71, 87, 0.35);
            --text-main: #f0f4fc;
            --text-muted: #8ea3bf;
            --border-glass: rgba(82, 146, 255, 0.18);
            --border-highlight: rgba(82, 146, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --container-max: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
            background-image: 
                radial-gradient(circle at 15% 20%, rgba(30, 111, 255, 0.12) 0%, transparent 40%),
                radial-gradient(circle at 85% 65%, rgba(255, 71, 87, 0.08) 0%, transparent 45%);
            background-attachment: fixed;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Glassmorphism Card Style */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-glass);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .glass-card:hover {
            border-color: var(--border-highlight);
            transform: translateY(-4px);
            box-shadow: 0 12px 40px 0 var(--primary-glow);
            background: var(--bg-card-hover);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 0 20px var(--primary-glow);
        }

        .btn-glow:hover {
            box-shadow: 0 0 30px rgba(82, 146, 255, 0.7);
            transform: scale(1.02);
            color: #fff;
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-main);
            border: 1px solid var(--border-glass);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--primary-light);
            color: #fff;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(30, 111, 255, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(82, 146, 255, 0.3);
            margin-bottom: 12px;
        }

        .badge-fire {
            background: rgba(255, 71, 87, 0.15);
            color: #ff6b81;
            border-color: rgba(255, 71, 87, 0.3);
        }

        /* Section Global */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-head {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 50px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
            background: linear-gradient(to right, #ffffff, #b6d3ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Header */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 11, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #fff 30%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .brand-logo::before {
            content: "";
            display: inline-block;
            width: 10px;
            height: 10px;
            background: var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 12px;
            border-radius: var(--radius-sm);
        }

        .nav-link:hover, .nav-link.active {
            color: #fff;
            background: rgba(82, 146, 255, 0.1);
        }

        /* Banner Limit */
        .promo-bar {
            background: linear-gradient(90deg, #1e3c72 0%, #2a5298 50%, #c0392b 100%);
            padding: 10px 0;
            text-align: center;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 12px;
        }

        /* Hero */
        .hero-section {
            padding: 100px 0 80px;
            text-align: center;
        }

        .hero-content {
            max-width: 880px;
            margin: 0 auto;
        }

        h1.hero-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #ffffff 20%, #90baff 70%, #ff8591 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-intro {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 36px;
            text-align: justify;
            text-align-last: center;
        }

        .hero-cta-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 40px;
        }

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

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        /* Metric Board */
        .metric-card {
            text-align: center;
            padding: 30px 20px;
        }

        .metric-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 10px;
            text-shadow: 0 0 16px var(--primary-glow);
        }

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

        /* Contrast Table Card */
        .contrast-card {
            border-left: 4px solid var(--primary);
        }

        .contrast-item {
            margin-bottom: 16px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .contrast-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .contrast-tag {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-light);
            margin-bottom: 6px;
        }

        /* Timeline Flow */
        .timeline-step {
            position: relative;
            padding-left: 28px;
        }

        .timeline-step::before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary-light);
            box-shadow: 0 0 8px var(--primary-light);
        }

        /* News / Content List */
        .content-item {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .content-date {
            font-size: 12px;
            color: #64748b;
            margin-top: 14px;
        }

        /* Coupon Wall */
        .coupon-box {
            background: linear-gradient(135deg, rgba(30, 111, 255, 0.1), rgba(255, 71, 87, 0.1));
            border: 1px dashed var(--border-highlight);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
        }

        .coupon-val {
            font-size: 32px;
            font-weight: 800;
            color: #ff6b81;
        }

        /* Footer */
        footer {
            background: #04070d;
            border-top: 1px solid var(--border-glass);
            padding: 60px 0 30px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-sub {
            max-width: 360px;
            line-height: 1.7;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a:hover {
            color: var(--primary-light);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 13px;
            color: #4b5563;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            h1.hero-title { font-size: 36px; }
        }

        @media (max-width: 768px) {
            .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            h1.hero-title { font-size: 28px; }
            .section-title { font-size: 24px; }
            section { padding: 50px 0; }
            .hero-section { padding: 60px 0 40px; }
        }

/* roulang page: category1 */
:root {
      --bg-base: #060b14;
      --bg-surface: #0c1626;
      --bg-card: rgba(16, 29, 50, 0.7);
      --bg-card-hover: rgba(23, 41, 71, 0.85);
      --primary: #1e6fff;
      --primary-light: #5292ff;
      --primary-glow: rgba(30, 111, 255, 0.4);
      --accent: #ff4757;
      --accent-glow: rgba(255, 71, 87, 0.35);
      --text-main: #f0f4fc;
      --text-muted: #8ea3bf;
      --border-glass: rgba(82, 146, 255, 0.18);
      --border-highlight: rgba(82, 146, 255, 0.4);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
      --container-max: 1200px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 15% 20%, rgba(30, 111, 255, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 85% 65%, rgba(255, 71, 87, 0.08) 0%, transparent 45%);
      background-attachment: fixed;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(6, 11, 20, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glass);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      font-size: 22px;
      font-weight: 800;
      letter-spacing: 0.5px;
      background: linear-gradient(135deg, #fff 30%, var(--primary-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo::before {
      content: "";
      display: inline-block;
      width: 10px;
      height: 10px;
      background: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--accent);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 6px 12px;
      border-radius: var(--radius-sm);
    }
    .nav-link:hover, .nav-link.active {
      color: #fff;
      background: rgba(30, 111, 255, 0.15);
      border: 1px solid rgba(82, 146, 255, 0.3);
    }
    section {
      padding: 70px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 46px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      margin-bottom: 14px;
      background: linear-gradient(to right, #ffffff, #b6d3ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-glass);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .glass-card:hover {
      border-color: var(--border-highlight);
      transform: translateY(-4px);
      box-shadow: 0 12px 40px 0 var(--primary-glow);
      background: var(--bg-card-hover);
    }
    .badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 500;
      background: rgba(30, 111, 255, 0.15);
      color: var(--primary-light);
      border: 1px solid rgba(82, 146, 255, 0.3);
      margin-bottom: 12px;
    }
    .badge-fire {
      background: rgba(255, 71, 87, 0.15);
      color: #ff6b81;
      border-color: rgba(255, 71, 87, 0.3);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      border-radius: 50px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn-glow {
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #fff;
      box-shadow: 0 0 20px var(--primary-glow);
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(82, 146, 255, 0.7);
      transform: scale(1.02);
      color: #fff;
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-main);
      border: 1px solid var(--border-glass);
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--primary-light);
      color: #fff;
    }

    /* Category Specific Styles */
    .hero-organic {
      padding: 70px 0 60px;
      position: relative;
    }
    .hero-organic-content {
      background: radial-gradient(circle at top center, rgba(30, 111, 255, 0.15) 0%, rgba(12, 22, 38, 0.8) 70%);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      text-align: center;
      position: relative;
    }
    .hero-organic h1 {
      font-size: 38px;
      line-height: 1.3;
      margin-bottom: 20px;
      background: linear-gradient(135deg, #ffffff 40%, #8ea3bf);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-organic p {
      max-width: 820px;
      margin: 0 auto 30px;
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .ingredient-pills {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-top: 24px;
    }
    .pill-item {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-glass);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 13px;
      color: var(--text-main);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .pill-item span {
      color: var(--accent);
      font-weight: bold;
    }

    /* Grid Layouts */
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .tech-card {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .tech-card h3 {
      font-size: 18px;
      margin-bottom: 12px;
      color: #fff;
    }
    .tech-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .tech-spec {
      list-style: none;
      font-size: 12px;
      color: var(--primary-light);
      border-top: 1px dashed var(--border-glass);
      padding-top: 14px;
    }
    .tech-spec li {
      margin-bottom: 6px;
      display: flex;
      justify-content: space-between;
    }
    .tech-spec li span {
      color: var(--text-muted);
    }

    /* Comparison Table Block */
    .compare-container {
      overflow-x: auto;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-glass);
      background: var(--bg-card);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-glass);
    }
    .compare-table th {
      background: rgba(30, 111, 255, 0.1);
      color: #fff;
      font-weight: 600;
      white-space: nowrap;
    }
    .compare-table tr:hover td {
      background: rgba(255, 255, 255, 0.02);
    }
    .compare-table td:first-child {
      font-weight: 600;
      color: var(--primary-light);
      white-space: nowrap;
    }

    /* Parameter Matrix */
    .param-box {
      border-left: 3px solid var(--primary);
      padding-left: 18px;
      margin-bottom: 20px;
    }
    .param-box h4 {
      font-size: 16px;
      color: #fff;
      margin-bottom: 6px;
    }
    .param-box p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* Gallery Cards */
    .video-mock {
      height: 160px;
      background: #09121f;
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      border: 1px solid rgba(82, 146, 255, 0.1);
      background-size: cover;
      background-position: center;
    }
    .video-play-tag {
      background: rgba(0, 0, 0, 0.65);
      backdrop-filter: blur(4px);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 12px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 6px;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .video-play-tag::before {
      content: "▶";
      font-size: 10px;
      color: var(--accent);
    }

    /* QA Section */
    .qa-item {
      margin-bottom: 16px;
    }
    .qa-q {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .qa-q::before {
      content: "Q";
      display: inline-block;
      width: 22px;
      height: 22px;
      background: var(--primary);
      color: #fff;
      border-radius: 4px;
      font-size: 12px;
      line-height: 22px;
      text-align: center;
      flex-shrink: 0;
    }
    .qa-a {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      padding-left: 30px;
    }

    /* Footer */
    footer {
      background: #04070d;
      border-top: 1px solid var(--border-glass);
      padding: 60px 0 30px;
      margin-top: 60px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-logo {
      font-size: 20px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-sub {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 420px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--primary-light);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      text-align: center;
      font-size: 12px;
      color: #556880;
    }

    @media (max-width: 1024px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .hero-organic h1 { font-size: 28px; }
      .hero-organic-content { padding: 30px 20px; }
      .grid-3, .grid-2 { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .nav-links { gap: 14px; }
    }
    @media (max-width: 520px) {
      .grid-4 { grid-template-columns: 1fr; }
      .section-title { font-size: 24px; }
    }