/* roulang page: index */
:root {
      --primary-bg: #0B0C0E;
      --secondary-bg: #14161B;
      --tertiary-bg: #1A1D24;
      --gold-accent: #D4AF37;
      --gold-light: #F5E7B2;
      --bronze-amber: #B45309;
      --text-primary: #F5F5F7;
      --text-secondary: #CBD5E1;
      --text-muted: #A8A29E;
      --accent-gradient: linear-gradient(135deg, #D4AF37 0%, #B8962E 50%, #F5E7B2 100%);
      --card-bg: #1A1D24;
      --card-border: rgba(212, 175, 55, 0.18);
      --card-hover-border: rgba(212, 175, 55, 0.55);
      --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.08);
      --shadow-elevated: 0 20px 48px rgba(0, 0, 0, 0.55);
      --border-radius-sm: 10px;
      --border-radius-md: 16px;
      --border-radius-lg: 24px;
      --font-sans: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
      --transition-smooth: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-sans);
      background-color: var(--primary-bg);
      color: var(--text-primary);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a { text-decoration: none; color: var(--gold-accent); transition: var(--transition-smooth); }
    a:hover { color: var(--gold-light); }
    img { max-width: 100%; height: auto; display: block; }
    .container { max-width: 1200px; }
    /* HEADER / NAV */
    .navbar {
      background-color: rgba(11, 12, 14, 0.92);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(212, 175, 55, 0.15);
      padding: 14px 0;
      transition: var(--transition-smooth);
    }
    .navbar-brand {
      font-weight: 700;
      font-size: 1.5rem;
      letter-spacing: -0.3px;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .nav-link {
      color: var(--text-secondary) !important;
      font-weight: 500;
      margin: 0 10px;
      font-size: 0.95rem;
      letter-spacing: 0.2px;
      transition: var(--transition-smooth);
    }
    .nav-link:hover, .nav-link.active {
      color: var(--gold-accent) !important;
    }
    .btn-login {
      border: 1px solid rgba(212, 175, 55, 0.7);
      color: var(--gold-accent);
      background: transparent;
      padding: 8px 22px;
      border-radius: 50px;
      font-weight: 600;
      transition: var(--transition-smooth);
    }
    .btn-login:hover {
      background: rgba(212, 175, 55, 0.08);
      border-color: var(--gold-light);
      color: var(--gold-light);
    }
    .btn-signup {
      background: var(--accent-gradient);
      border: none;
      color: #0B0C0E;
      font-weight: 700;
      padding: 9px 26px;
      border-radius: 50px;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 18px rgba(212, 175, 55, 0.28);
    }
    .btn-signup:hover {
      background: var(--gold-light);
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(212, 175, 55, 0.35);
      color: #0B0C0E;
    }
    .navbar-toggler {
      border: 1px solid rgba(255,255,255,0.15);
    }
    .navbar-toggler-icon {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(212, 175, 55, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    /* HERO */
    .hero-section {
      background: linear-gradient(180deg, #101217 0%, #0B0C0E 90%);
      padding: 120px 0 80px;
      position: relative;
      overflow: hidden;
    }
    .hero-section::before {
      content: '';
      position: absolute;
      top: -20%;
      right: -15%;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(212,175,55,0.06) 0%, transparent 70%);
      border-radius: 50%;
      z-index: 0;
    }
    .hero-badge {
      background: rgba(212,175,55,0.1);
      border: 1px solid rgba(212,175,55,0.3);
      color: var(--gold-accent);
      padding: 6px 18px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.8rem;
      text-transform: uppercase;
      letter-spacing: 1px;
      display: inline-block;
      margin-bottom: 20px;
    }
    .hero-title {
      font-size: 3.6rem;
      font-weight: 800;
      line-height: 1.15;
      letter-spacing: -1px;
    }
    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-secondary);
      max-width: 680px;
      margin: 28px 0 38px;
    }
    .demo-area {
      background: var(--secondary-bg);
      border-radius: var(--border-radius-lg);
      padding: 32px;
      border: 1px solid rgba(212,175,55,0.18);
      backdrop-filter: blur(8px);
    }
    .demo-screenshot {
      width: 100%;
      height: auto;
      border-radius: 14px;
      box-shadow: var(--shadow-elevated);
    }
    /* SECTIONS */
    .section-title {
      font-weight: 700;
      font-size: 2.2rem;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 700px;
    }
    .gold-text { color: var(--gold-accent); }
    /* CARDS */
    .grid-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--border-radius-md);
      padding: 24px;
      transition: var(--transition-smooth);
      height: 100%;
    }
    .grid-card:hover {
      border-color: var(--card-hover-border);
      box-shadow: var(--shadow-gold);
      transform: translateY(-6px);
    }
    .value-icon {
      font-size: 2.5rem;
      color: var(--gold-accent);
      margin-bottom: 16px;
    }
    /* TABLE / CHART */
    .chart-placeholder {
      background: var(--secondary-bg);
      border-radius: var(--border-radius-lg);
      padding: 48px 32px;
      border: 1px solid rgba(255,255,255,0.05);
    }
    .metric-number {
      font-size: 2.8rem;
      font-weight: 800;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    /* RESOURCE CARDS */
    .resource-card {
      background: var(--tertiary-bg);
      border-radius: var(--border-radius-sm);
      overflow: hidden;
      transition: var(--transition-smooth);
    }
    .resource-card:hover { transform: translateY(-4px); }
    /* LIST */
    .post-item {
      border-bottom: 1px solid rgba(255,255,255,0.06);
      padding: 16px 0;
    }
    .post-item:last-child { border-bottom: none; }
    /* FORM */
    .form-claim {
      background: linear-gradient(135deg, #1A1D24 0%, #101217 100%);
      border: 1px solid rgba(212,175,55,0.2);
      border-radius: var(--border-radius-lg);
      padding: 40px;
    }
    .form-control {
      background: #0B0C0E;
      border: 1px solid rgba(255,255,255,0.1);
      color: white;
      padding: 12px 18px;
      border-radius: 8px;
    }
    .form-control:focus {
      border-color: var(--gold-accent);
      box-shadow: 0 0 0 0.12rem rgba(212,175,55,0.25);
      background: #0B0C0E;
      color: white;
    }
    .btn-gold {
      background: var(--accent-gradient);
      border: none;
      color: #0B0C0E;
      font-weight: 700;
      padding: 12px 28px;
      border-radius: 8px;
    }
    /* FOOTER */
    footer {
      background: var(--secondary-bg);
      border-top: 1px solid rgba(255,255,255,0.06);
      padding: 48px 0 24px;
    }
    /* FAB */
    .fab-custom {
      position: fixed;
      left: 20px;
      bottom: 80px;
      width: 56px;
      height: 56px;
      background: var(--accent-gradient);
      border-radius: 50%;
      box-shadow: 0 8px 28px rgba(212,175,55,0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      color: #0B0C0E;
      z-index: 1050;
      transition: var(--transition-smooth);
      opacity: 0.85;
    }
    .fab-custom:hover {
      transform: scale(1.1);
      opacity: 1;
    }
    @media (max-width: 768px) {
      .hero-title { font-size: 2.5rem; }
      .section-title { font-size: 1.9rem; }
    }

/* roulang page: article */
:root {
            --primary-bg: #0B0C0E;
            --secondary-bg: #14161B;
            --tertiary-bg: #1A1D24;
            --gold-accent: #D4AF37;
            --gold-light: #F5E7B2;
            --bronze-amber: #B45309;
            --text-primary: #F5F5F7;
            --text-secondary: #CBD5E1;
            --text-muted: #A8A29E;
            --accent-gradient: linear-gradient(135deg, #D4AF37 0%, #B8962E 50%, #F5E7B2 100%);
            --card-bg: #1A1D24;
            --card-border: rgba(212, 175, 55, 0.18);
            --card-hover-border: rgba(212, 175, 55, 0.55);
            --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.08);
            --shadow-elevated: 0 20px 48px rgba(0, 0, 0, 0.55);
            --border-radius-sm: 10px;
            --border-radius-md: 16px;
            --border-radius-lg: 24px;
            --font-sans: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition-smooth: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: var(--gold-accent); transition: var(--transition-smooth); }
        a:hover { color: var(--gold-light); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; }
        /* HEADER / NAV */
        .navbar {
            background-color: rgba(11, 12, 14, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(212, 175, 55, 0.15);
            padding: 14px 0;
            transition: var(--transition-smooth);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            letter-spacing: -0.3px;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 500;
            margin: 0 10px;
            font-size: 0.95rem;
            letter-spacing: 0.2px;
            transition: var(--transition-smooth);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--gold-accent) !important;
        }
        .btn-login {
            border: 1px solid rgba(212, 175, 55, 0.7);
            color: var(--gold-accent);
            background: transparent;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition-smooth);
        }
        .btn-login:hover {
            background: rgba(212, 175, 55, 0.08);
            border-color: var(--gold-light);
            color: var(--gold-light);
        }
        .btn-signup {
            background: var(--accent-gradient);
            border: none;
            color: #0B0C0E;
            font-weight: 700;
            padding: 9px 26px;
            border-radius: 50px;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 18px rgba(212, 175, 55, 0.28);
        }
        .btn-signup:hover {
            background: var(--gold-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(212, 175, 55, 0.35);
            color: #0B0C0E;
        }
        .navbar-toggler {
            border: 1px solid rgba(255,255,255,0.15);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(212, 175, 55, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        /* ARTICLE HERO BANNER */
        .article-hero {
            background: linear-gradient(180deg, #101217 0%, #0B0C0E 90%);
            padding: 140px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212,175,55,0.06) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .article-hero-content {
            position: relative;
            z-index: 2;
        }
        .article-badge {
            background: rgba(212,175,55,0.1);
            border: 1px solid rgba(212,175,55,0.3);
            color: var(--gold-accent);
            padding: 6px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            display: inline-block;
            margin-bottom: 20px;
        }
        .article-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .article-meta {
            color: var(--text-muted);
            font-size: 0.95rem;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            margin-top: 16px;
        }
        .article-meta span i {
            color: var(--gold-accent);
            margin-right: 6px;
        }
        /* ARTICLE BODY STYLES */
        .article-container {
            background: var(--secondary-bg);
            border-radius: var(--border-radius-lg);
            padding: 48px 40px;
            margin-top: -40px;
            position: relative;
            z-index: 3;
            border: 1px solid rgba(212,175,55,0.12);
            box-shadow: var(--shadow-elevated);
        }
        .article-content {
            font-size: 1.08rem;
            line-height: 1.75;
            color: var(--text-secondary);
        }
        .article-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 42px;
            margin-bottom: 20px;
            letter-spacing: -0.3px;
        }
        .article-content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--gold-light);
            margin-top: 32px;
            margin-bottom: 14px;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content strong {
            color: var(--text-primary);
            font-weight: 600;
        }
        .article-content img {
            border-radius: var(--border-radius-md);
            margin: 28px 0;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .article-content ul, .article-content ol {
            margin-bottom: 24px;
            padding-left: 24px;
            color: var(--text-secondary);
        }
        .article-content li {
            margin-bottom: 12px;
        }
        .article-content blockquote {
            border-left: 4px solid var(--gold-accent);
            background: rgba(212,175,55,0.05);
            padding: 24px 28px;
            border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
            margin: 32px 0;
            font-style: italic;
            color: var(--text-muted);
        }
        /* NOT FOUND STATE */
        .not-found-state {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--border-radius-lg);
            padding: 64px 32px;
            margin-top: -40px;
            position: relative;
            z-index: 3;
        }
        .not-found-state h2 {
            font-size: 2.4rem;
            color: var(--gold-accent);
            margin-bottom: 18px;
        }
        .not-found-state p {
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 28px;
        }
        /* RELATED ARTICLES SECTION */
        .related-section {
            padding: 70px 0;
        }
        .section-label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--gold-accent);
            margin-bottom: 8px;
            font-weight: 600;
        }
        .section-heading {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 40px;
            letter-spacing: -0.5px;
        }
        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--border-radius-md);
            padding: 24px;
            height: 100%;
            transition: var(--transition-smooth);
        }
        .related-card:hover {
            border-color: var(--card-hover-border);
            transform: translateY(-6px);
            box-shadow: var(--shadow-gold);
        }
        .related-card img {
            border-radius: var(--border-radius-sm);
            aspect-ratio: 16 / 9;
            object-fit: cover;
            margin-bottom: 16px;
        }
        .related-card h5 {
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .related-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.55;
        }
        /* SUBSCRIBE CTA BANNER */
        .subscribe-cta {
            background: linear-gradient(135deg, #1A1D24 0%, #0E1015 100%);
            border: 1px solid rgba(212,175,55,0.22);
            border-radius: var(--border-radius-lg);
            padding: 56px 48px;
            margin: 70px 0;
        }
        .subscribe-cta h3 {
            font-weight: 700;
            font-size: 2rem;
            letter-spacing: -0.5px;
        }
        .subscribe-cta p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
        }
        .subs-form .input-group {
            max-width: 520px;
        }
        .subs-form input {
            background: #0B0C0E;
            border: 1px solid rgba(255,255,255,0.1);
            color: white;
            padding: 14px 20px;
            border-radius: 50px 0 0 50px;
        }
        .subs-form input:focus {
            border-color: var(--gold-accent);
            outline: none;
            box-shadow: none;
        }
        .subs-form button {
            background: var(--accent-gradient);
            border: none;
            color: #0B0C0E;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 0 50px 50px 0;
            transition: var(--transition-smooth);
        }
        .subs-form button:hover {
            background: var(--gold-light);
            color: #0B0C0E;
        }
        /* FOOTER */
        footer {
            background: var(--secondary-bg);
            padding: 60px 0 32px;
            border-top: 1px solid rgba(212,175,55,0.12);
            margin-top: 60px;
        }
        footer h5, footer h6 {
            color: var(--text-primary);
            font-weight: 700;
            margin-bottom: 18px;
        }
        footer p, footer li {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        footer a {
            color: var(--text-muted);
            transition: var(--transition-smooth);
        }
        footer a:hover {
            color: var(--gold-accent);
        }
        footer hr {
            border-color: rgba(255,255,255,0.06);
        }
        .gold-text { color: var(--gold-accent) !important; }
        /* MOBILE RESPONSIVE */
        @media (max-width: 992px) {
            .article-hero h1 { font-size: 2.4rem; }
            .article-container { padding: 32px 24px; }
        }
        @media (max-width: 768px) {
            .navbar-brand { font-size: 1.3rem; }
            .article-hero h1 { font-size: 2rem; }
            .section-heading { font-size: 1.8rem; }
            .subscribe-cta { padding: 36px 24px; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.8rem; }
            .btn-login, .btn-signup { padding: 6px 16px; font-size: 0.85rem; }
            .related-card { margin-bottom: 20px; }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0B0C0E;
            --secondary-bg: #14161B;
            --tertiary-bg: #1A1D24;
            --gold-accent: #D4AF37;
            --gold-light: #F5E7B2;
            --bronze-amber: #B45309;
            --text-primary: #F5F5F7;
            --text-secondary: #CBD5E1;
            --text-muted: #A8A29E;
            --accent-gradient: linear-gradient(135deg, #D4AF37 0%, #B8962E 50%, #F5E7B2 100%);
            --card-bg: #1A1D24;
            --card-border: rgba(212, 175, 55, 0.18);
            --card-hover-border: rgba(212, 175, 55, 0.55);
            --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.08);
            --shadow-elevated: 0 20px 48px rgba(0, 0, 0, 0.55);
            --border-radius-sm: 10px;
            --border-radius-md: 16px;
            --border-radius-lg: 24px;
            --font-sans: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition-smooth: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: var(--gold-accent); transition: var(--transition-smooth); }
        a:hover { color: var(--gold-light); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1240px; }

        /* Header / Nav */
        .navbar {
            background-color: rgba(11, 12, 14, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(212, 175, 55, 0.15);
            padding: 14px 0;
            transition: var(--transition-smooth);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            letter-spacing: -0.3px;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 500;
            margin: 0 12px;
            font-size: 0.95rem;
            letter-spacing: 0.3px;
            transition: var(--transition-smooth);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--gold-accent) !important;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 12px;
            right: 12px;
            height: 2px;
            background: var(--accent-gradient);
            border-radius: 2px;
        }
        .btn-login {
            border: 1px solid rgba(212, 175, 55, 0.7);
            color: var(--gold-accent);
            background: transparent;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition-smooth);
        }
        .btn-login:hover {
            background: rgba(212, 175, 55, 0.08);
            border-color: var(--gold-light);
            color: var(--gold-light);
        }
        .btn-signup {
            background: var(--accent-gradient);
            border: none;
            color: #0B0C0E;
            font-weight: 700;
            padding: 9px 26px;
            border-radius: 50px;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 18px rgba(212, 175, 55, 0.28);
        }
        .btn-signup:hover {
            background: var(--gold-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(212, 175, 55, 0.35);
            color: #0B0C0E;
        }
        .navbar-toggler {
            border: 1px solid rgba(255,255,255,0.15);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(212, 175, 55, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Category Hero */
        .cat-hero {
            background: linear-gradient(180deg, #0F1118 0%, #0B0C0E 90%);
            padding: 140px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212,175,55,0.07) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .hero-badge {
            background: rgba(212,175,55,0.12);
            border: 1px solid rgba(212,175,55,0.35);
            color: var(--gold-light);
            padding: 8px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            display: inline-block;
            margin-bottom: 24px;
        }
        .hero-title {
            font-size: 3.4rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 24px 0 36px;
        }
        .btn-primary-gold {
            background: var(--accent-gradient);
            border: none;
            color: #0B0C0E;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            transition: var(--transition-smooth);
            box-shadow: 0 6px 24px rgba(212, 175, 55, 0.3);
            display: inline-block;
        }
        .btn-primary-gold:hover {
            background: var(--gold-light);
            transform: translateY(-2px);
            box-shadow: 0 14px 36px rgba(212, 175, 55, 0.4);
            color: #0B0C0E;
        }

        /* Sections */
        .section-padding { padding: 80px 0; }
        .section-header { margin-bottom: 56px; }
        .section-title {
            font-weight: 700;
            font-size: 2.4rem;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 700px;
        }
        .section-title-sm {
            font-weight: 700;
            font-size: 1.8rem;
            margin-bottom: 12px;
        }

        /* Feature Cards */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--border-radius-md);
            padding: 32px 28px;
            transition: var(--transition-smooth);
            height: 100%;
            text-align: left;
        }
        .feature-card:hover {
            border-color: var(--card-hover-border);
            box-shadow: var(--shadow-gold);
            transform: translateY(-8px);
        }
        .feature-icon {
            font-size: 2.4rem;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .feature-card p {
            font-size: 0.98rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* Process Steps */
        .process-step {
            background: var(--tertiary-bg);
            border-left: 4px solid var(--gold-accent);
            padding: 24px 28px;
            margin-bottom: 24px;
            border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
            transition: var(--transition-smooth);
        }
        .process-step:hover {
            background: #1E2230;
            border-left-color: var(--gold-light);
        }
        .process-step h4 {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .process-step p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 0;
        }

        /* CTA Strip */
        .cta-strip {
            background: linear-gradient(135deg, #1A1D24 0%, #101217 100%);
            border: 1px solid rgba(212,175,55,0.2);
            border-radius: var(--border-radius-lg);
            padding: 48px;
            margin: 60px 0;
        }
        .cta-strip h3 {
            font-weight: 750;
            font-size: 2rem;
            margin-bottom: 12px;
        }

        /* Resource Cards */
        .resource-card {
            background: var(--tertiary-bg);
            border-radius: var(--border-radius-sm);
            overflow: hidden;
            transition: var(--transition-smooth);
            height: 100%;
        }
        .resource-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-gold); }
        .resource-card .card-body { padding: 22px; }
        .resource-card h5 { font-weight: 700; font-size: 1.1rem; margin-bottom: 8px; }
        .resource-card p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 12px; }
        .resource-card .btn-outline-gold {
            border: 1px solid var(--gold-accent);
            color: var(--gold-accent);
            background: transparent;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition-smooth);
        }
        .resource-card .btn-outline-gold:hover {
            background: var(--gold-accent);
            color: #0B0C0E;
        }

        /* Post List */
        .post-item {
            border-bottom: 1px solid rgba(255,255,255,0.06);
            padding: 18px 0;
        }
        .post-item:last-child { border-bottom: none; }
        .post-item a {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            transition: var(--transition-smooth);
        }
        .post-item a:hover { color: var(--gold-accent); }
        .post-item small {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Footer */
        footer {
            background: #08090C;
            border-top: 1px solid rgba(212,175,55,0.12);
            padding: 48px 0 30px;
            margin-top: 60px;
        }
        footer h5, footer h6 { font-weight: 700; margin-bottom: 14px; }
        footer ul li { margin-bottom: 8px; }
        footer ul li a { color: var(--text-secondary); font-size: 0.9rem; }
        footer ul li a:hover { color: var(--gold-accent); }
        .gold-text { color: var(--gold-accent); }

        /* Responsive */
        @media (max-width: 992px) {
            .hero-title { font-size: 2.5rem; }
            .section-title { font-size: 1.9rem; }
            .cat-hero { padding: 120px 0 60px; }
            .navbar .container { flex-wrap: wrap; }
        }
        @media (max-width: 768px) {
            .hero-title { font-size: 2rem; }
            .hero-desc { font-size: 1rem; }
            .section-padding { padding: 56px 0; }
            .cta-strip { padding: 30px 22px; }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #0B0C0E;
            --secondary-bg: #14161B;
            --tertiary-bg: #1A1D24;
            --gold-accent: #D4AF37;
            --gold-light: #F5E7B2;
            --bronze-amber: #B45309;
            --text-primary: #F5F5F7;
            --text-secondary: #CBD5E1;
            --text-muted: #A8A29E;
            --accent-gradient: linear-gradient(135deg, #D4AF37 0%, #B8962E 50%, #F5E7B2 100%);
            --card-bg: #1A1D24;
            --card-border: rgba(212, 175, 55, 0.18);
            --card-hover-border: rgba(212, 175, 55, 0.55);
            --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.08);
            --shadow-elevated: 0 20px 48px rgba(0, 0, 0, 0.55);
            --border-radius-sm: 10px;
            --border-radius-md: 16px;
            --border-radius-lg: 24px;
            --font-sans: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition-smooth: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: var(--gold-accent); transition: var(--transition-smooth); }
        a:hover { color: var(--gold-light); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; }
        /* NAVBAR */
        .navbar {
            background-color: rgba(11, 12, 14, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(212, 175, 55, 0.15);
            padding: 14px 0;
            transition: var(--transition-smooth);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            letter-spacing: -0.3px;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 500;
            margin: 0 10px;
            font-size: 0.95rem;
            letter-spacing: 0.2px;
            transition: var(--transition-smooth);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--gold-accent) !important;
        }
        .btn-login {
            border: 1px solid rgba(212, 175, 55, 0.7);
            color: var(--gold-accent);
            background: transparent;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition-smooth);
        }
        .btn-login:hover {
            background: rgba(212, 175, 55, 0.08);
            border-color: var(--gold-light);
            color: var(--gold-light);
        }
        .btn-signup {
            background: var(--accent-gradient);
            border: none;
            color: #0B0C0E;
            font-weight: 700;
            padding: 9px 26px;
            border-radius: 50px;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 18px rgba(212, 175, 55, 0.28);
        }
        .btn-signup:hover {
            background: var(--gold-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(212, 175, 55, 0.35);
            color: #0B0C0E;
        }
        .navbar-toggler {
            border: 1px solid rgba(255,255,255,0.15);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(212, 175, 55, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        /* HERO */
        .hero-section {
            background: linear-gradient(180deg, rgba(11,12,14,0.95) 0%, rgba(11,12,14,0.98) 50%, #0B0C0E 100%), url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            padding: 160px 0 100px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -15%;
            right: -10%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(212,175,55,0.08) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .hero-badge {
            background: rgba(212,175,55,0.12);
            border: 1px solid rgba(212,175,55,0.35);
            color: var(--gold-accent);
            padding: 8px 24px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            display: inline-block;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .hero-title {
            font-size: 3.4rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
            position: relative;
            z-index: 1;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 650px;
            margin: 24px 0 36px;
            position: relative;
            z-index: 1;
        }
        .hero-platforms {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .platform-badge {
            background: var(--secondary-bg);
            border: 1px solid var(--card-border);
            border-radius: 50px;
            padding: 12px 28px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 600;
            transition: var(--transition-smooth);
        }
        .platform-badge i {
            font-size: 1.6rem;
            color: var(--gold-accent);
        }
        /* SECTION BASE */
        .section-padding { padding: 80px 0; }
        .section-header { margin-bottom: 48px; }
        .section-title {
            font-weight: 700;
            font-size: 2.2rem;
            line-height: 1.25;
            letter-spacing: -0.4px;
        }
        .gold-text { color: var(--gold-accent); }
        .gold-text-light { color: var(--gold-light); }
        .text-muted-custom { color: var(--text-muted); }
        /* CARDS */
        .guide-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--border-radius-md);
            padding: 32px;
            transition: var(--transition-smooth);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .guide-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-gradient);
            opacity: 0;
            transition: opacity 0.3s;
        }
        .guide-card:hover::after { opacity: 1; }
        .guide-card:hover {
            border-color: var(--card-hover-border);
            box-shadow: var(--shadow-gold);
            transform: translateY(-8px);
        }
        .guide-icon {
            width: 58px;
            height: 58px;
            background: rgba(212,175,55,0.1);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--gold-accent);
            margin-bottom: 20px;
        }
        /* FEATURE ROW */
        .feature-row {
            background: var(--secondary-bg);
            border-radius: var(--border-radius-lg);
            padding: 48px 36px;
            border: 1px solid var(--card-border);
        }
        .feature-icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(212,175,55,0.12);
            border: 1px solid rgba(212,175,55,0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold-accent);
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        /* STEPS */
        .step-number {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        /* FAQ */
        .accordion-item {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 12px;
            border-radius: var(--border-radius-sm) !important;
            overflow: hidden;
        }
        .accordion-button {
            background: var(--tertiary-bg);
            color: var(--text-primary);
            font-weight: 600;
            box-shadow: none !important;
            border-radius: var(--border-radius-sm) !important;
            padding: 20px 24px;
        }
        .accordion-button:not(.collapsed) {
            background: #1f2230;
            color: var(--gold-accent);
        }
        .accordion-button::after {
            filter: invert(0.8);
        }
        .accordion-body {
            background: var(--secondary-bg);
            color: var(--text-secondary);
            padding: 24px;
            line-height: 1.7;
        }
        /* CTA STRIP */
        .cta-strip {
            background: linear-gradient(135deg, #1A1D24 0%, #0B0C0E 100%);
            border: 1px solid rgba(212,175,55,0.25);
            border-radius: var(--border-radius-lg);
            padding: 48px 40px;
            text-align: center;
        }
        .btn-gold {
            background: var(--accent-gradient);
            border: none;
            color: #0B0C0E;
            font-weight: 700;
            padding: 14px 40px;
            border-radius: 50px;
            font-size: 1.05rem;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 18px rgba(212,175,55,0.28);
            display: inline-block;
        }
        .btn-gold:hover {
            background: var(--gold-light);
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(212,175,55,0.35);
            color: #0B0C0E;
        }
        /* RESOURCE LIST */
        .resource-card {
            background: var(--tertiary-bg);
            border-radius: var(--border-radius-sm);
            overflow: hidden;
            transition: var(--transition-smooth);
            border: 1px solid transparent;
        }
        .resource-card:hover {
            transform: translateY(-4px);
            border-color: var(--card-hover-border);
            box-shadow: var(--shadow-gold);
        }
        .resource-card .card-img {
            height: 200px;
            object-fit: cover;
        }
        .resource-body {
            padding: 20px;
        }
        .post-item {
            border-bottom: 1px solid rgba(255,255,255,0.06);
            padding: 16px 0;
        }
        .post-item:last-child { border-bottom: none; }
        .post-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        /* FOOTER */
        footer {
            background: var(--secondary-bg);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(212,175,55,0.15);
        }
        footer h5, footer h6 { color: var(--text-primary); font-weight: 600; }
        footer ul li a { color: var(--text-muted); font-size: 0.9rem; }
        footer ul li a:hover { color: var(--gold-accent); }
        hr { border-color: rgba(255,255,255,0.08); }
        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.6rem; }
        }
        @media (max-width: 768px) {
            .navbar { padding: 10px 0; }
            .hero-section { padding: 130px 0 60px; }
            .hero-title { font-size: 2.2rem; }
            .hero-desc { font-size: 1rem; }
            .section-title { font-size: 1.8rem; }
            .guide-card { padding: 24px; }
            .cta-strip { padding: 32px 24px; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: 1.8rem; }
            .hero-badge { font-size: 0.75rem; padding: 6px 16px; }
            .platform-badge { padding: 8px 18px; font-size: 0.85rem; }
            .step-number { font-size: 2.4rem; }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0B0C0E;
            --secondary-bg: #14161B;
            --tertiary-bg: #1A1D24;
            --gold-accent: #D4AF37;
            --gold-light: #F5E7B2;
            --bronze-amber: #B45309;
            --text-primary: #F5F5F7;
            --text-secondary: #CBD5E1;
            --text-muted: #A8A29E;
            --accent-gradient: linear-gradient(135deg, #D4AF37 0%, #B8962E 50%, #F5E7B2 100%);
            --card-bg: #1A1D24;
            --card-border: rgba(212, 175, 55, 0.18);
            --card-hover-border: rgba(212, 175, 55, 0.55);
            --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.08);
            --shadow-elevated: 0 20px 48px rgba(0, 0, 0, 0.55);
            --border-radius-sm: 10px;
            --border-radius-md: 16px;
            --border-radius-lg: 24px;
            --font-sans: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition-smooth: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--gold-accent);
            transition: var(--transition-smooth);
        }

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

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

        .container {
            max-width: 1200px;
        }

        /* HEADER / NAV */
        .navbar {
            background-color: rgba(11, 12, 14, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(212, 175, 55, 0.15);
            padding: 14px 0;
            transition: var(--transition-smooth);
        }

        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            letter-spacing: -0.3px;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 500;
            margin: 0 10px;
            font-size: 0.95rem;
            letter-spacing: 0.2px;
            transition: var(--transition-smooth);
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--gold-accent) !important;
        }

        .btn-login {
            border: 1px solid rgba(212, 175, 55, 0.7);
            color: var(--gold-accent);
            background: transparent;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            background: rgba(212, 175, 55, 0.08);
            border-color: var(--gold-light);
            color: var(--gold-light);
        }

        .btn-signup {
            background: var(--accent-gradient);
            border: none;
            color: #0B0C0E;
            font-weight: 700;
            padding: 9px 26px;
            border-radius: 50px;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 18px rgba(212, 175, 55, 0.28);
        }

        .btn-signup:hover {
            background: var(--gold-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(212, 175, 55, 0.35);
            color: #0B0C0E;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(212, 175, 55, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* HERO */
        .category-hero {
            background: linear-gradient(180deg, #101217 0%, #0B0C0E 90%);
            padding: 130px 0 70px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -15%;
            left: -10%;
            width: 550px;
            height: 550px;
            background: radial-gradient(circle, rgba(212, 175, 55, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .hero-badge {
            background: rgba(212, 175, 55, 0.1);
            border: 1px solid rgba(212, 175, 55, 0.3);
            color: var(--gold-accent);
            padding: 6px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            display: inline-block;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 28px 0 38px;
        }

        .download-visual {
            background: var(--secondary-bg);
            border-radius: var(--border-radius-lg);
            padding: 32px;
            border: 1px solid rgba(212, 175, 55, 0.18);
            backdrop-filter: blur(8px);
            text-align: center;
        }

        .device-icons img {
            width: 48px;
            margin: 0 10px;
            opacity: 0.8;
        }

        .btn-download {
            background: var(--accent-gradient);
            border: none;
            color: #0B0C0E;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1.1rem;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 24px rgba(212, 175, 55, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-download:hover {
            background: var(--gold-light);
            transform: translateY(-3px);
            box-shadow: 0 14px 38px rgba(212, 175, 55, 0.4);
            color: #0B0C0E;
        }

        /* SECTIONS */
        section {
            padding: 60px 0;
        }

        .section-title {
            font-weight: 700;
            font-size: 2.2rem;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 700px;
        }

        /* PAIN POINTS */
        .pain-card {
            background: var(--card-bg);
            border: 1px solid rgba(220, 38, 38, 0.25);
            border-radius: var(--border-radius-md);
            padding: 28px;
            transition: var(--transition-smooth);
            height: 100%;
        }

        .pain-icon {
            font-size: 2.4rem;
            color: #DC2626;
            margin-bottom: 16px;
        }

        /* SOLUTION STEPS */
        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--border-radius-md);
            padding: 30px;
            position: relative;
            transition: var(--transition-smooth);
            height: 100%;
        }

        .step-card:hover {
            border-color: var(--card-hover-border);
            box-shadow: var(--shadow-gold);
            transform: translateY(-4px);
        }

        .step-number {
            font-size: 3.5rem;
            font-weight: 900;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            opacity: 0.25;
            position: absolute;
            top: 15px;
            right: 25px;
            line-height: 1;
        }

        /* FEATURE CARDS */
        .feature-card {
            background: var(--tertiary-bg);
            border-radius: var(--border-radius-sm);
            padding: 28px;
            border: 1px solid transparent;
            transition: var(--transition-smooth);
            height: 100%;
        }

        .feature-card:hover {
            border-color: var(--card-border);
            background: var(--card-bg);
        }

        .feature-icon {
            font-size: 2.2rem;
            color: var(--gold-accent);
            margin-bottom: 16px;
        }

        /* COMPATIBILITY TABLE */
        .table-custom {
            background: var(--card-bg);
            border-radius: var(--border-radius-md);
            overflow: hidden;
            border: 1px solid var(--card-border);
        }

        .table-custom th {
            background: var(--secondary-bg);
            color: var(--gold-accent);
            font-weight: 700;
            border-bottom: 2px solid rgba(212, 175, 55, 0.25);
            padding: 16px;
            text-align: left;
        }

        .table-custom td {
            padding: 14px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--text-secondary);
        }

        .table-custom tr:last-child td {
            border-bottom: none;
        }

        .badge-yes {
            background: rgba(16, 185, 129, 0.15);
            color: #10B981;
            padding: 5px 12px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.8rem;
        }

        /* TESTIMONIALS */
        .testimonial-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--border-radius-md);
            padding: 28px;
            transition: var(--transition-smooth);
            height: 100%;
        }

        .testimonial-card:hover {
            border-color: var(--card-hover-border);
            box-shadow: var(--shadow-gold);
        }

        .rating-stars {
            color: #FBBF24;
            font-size: 1rem;
            letter-spacing: 2px;
        }

        /* FAQ */
        .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            margin-bottom: 12px;
            border-radius: var(--border-radius-sm) !important;
            overflow: hidden;
        }

        .accordion-button {
            background: var(--card-bg);
            color: var(--text-primary);
            font-weight: 600;
            box-shadow: none;
            padding: 18px 24px;
            transition: var(--transition-smooth);
        }

        .accordion-button:not(.collapsed) {
            background: var(--tertiary-bg);
            color: var(--gold-accent);
            box-shadow: none;
        }

        .accordion-button::after {
            filter: invert(70%) sepia(60%) saturate(400%) hue-rotate(5deg);
        }

        .accordion-body {
            background: var(--card-bg);
            color: var(--text-secondary);
            padding: 0 24px 20px;
        }

        /* CTA STRIP */
        .cta-strip {
            background: linear-gradient(135deg, #1A1D24 0%, #101217 100%);
            border: 1px solid rgba(212, 175, 55, 0.22);
            border-radius: var(--border-radius-lg);
            padding: 50px 40px;
        }

        /* POSTS */
        .post-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 16px 0;
        }

        .post-item:last-child {
            border-bottom: none;
        }

        .post-title {
            font-weight: 600;
            color: var(--text-primary);
            transition: var(--transition-smooth);
            font-size: 1rem;
        }

        .post-title:hover {
            color: var(--gold-accent);
        }

        .post-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* FOOTER */
        footer {
            background: var(--secondary-bg);
            border-top: 1px solid rgba(212, 175, 55, 0.12);
            padding: 50px 0 30px;
            color: var(--text-secondary);
        }

        footer h5,
        footer h6 {
            color: var(--gold-accent);
            font-weight: 700;
            margin-bottom: 16px;
        }

        footer a {
            color: var(--text-muted);
            transition: var(--transition-smooth);
        }

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

        footer hr {
            border-color: rgba(255, 255, 255, 0.08);
            margin: 28px 0;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1A1D24 0%, #0B0C0E 100%);
            border: 2px solid #D4AF37;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--gold-accent);
            box-shadow: 0 6px 25px rgba(212, 175, 55, 0.35);
            transition: var(--transition-smooth);
            cursor: pointer;
            opacity: 0.85;
        }

        .fab-floating:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 8px 32px rgba(212, 175, 55, 0.5);
        }

        .fab-floating:active {
            transform: scale(0.94);
        }

        .fab-badge {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            background: #DC2626;
            border-radius: 50%;
            border: 2px solid #0B0C0E;
        }

        /* RESPONSIVE */
        @media (max-width: 992px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .navbar-brand {
                font-size: 1.2rem;
            }
            .download-visual {
                margin-top: 32px;
            }
            .category-hero {
                padding: 110px 0 50px;
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .btn-download {
                padding: 12px 28px;
                font-size: 1rem;
            }
            .cta-strip {
                padding: 32px 20px;
            }
            section {
                padding: 40px 0;
            }
            .fab-floating {
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
                left: 12px;
                bottom: 80px;
            }
        }

        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 1rem;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.85rem;
            }
            .step-number {
                font-size: 2.4rem;
                top: 10px;
                right: 16px;
            }
        }

/* roulang page: category4 */
:root {
  --primary-bg: #0B0C0E;
  --secondary-bg: #14161B;
  --tertiary-bg: #1A1D24;
  --gold-accent: #D4AF37;
  --gold-light: #F5E7B2;
  --bronze-amber: #B45309;
  --text-primary: #F5F5F7;
  --text-secondary: #CBD5E1;
  --text-muted: #A8A29E;
  --accent-gradient: linear-gradient(135deg, #D4AF37 0%, #B8962E 50%, #F5E7B2 100%);
  --card-bg: #1A1D24;
  --card-border: rgba(212, 175, 55, 0.18);
  --card-hover-border: rgba(212, 175, 55, 0.55);
  --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.08);
  --shadow-elevated: 0 20px 48px rgba(0, 0, 0, 0.55);
  --border-radius-sm: 10px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --font-sans: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --transition-smooth: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background-color: var(--primary-bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: var(--gold-accent); transition: var(--transition-smooth); }
a:hover { color: var(--gold-light); }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; }
.navbar {
  background-color: rgba(11, 12, 14, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  padding: 14px 0;
  transition: var(--transition-smooth);
}
.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.3px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  margin: 0 10px;
  font-size: 0.95rem;
  letter-spacing: 0.2px;
  transition: var(--transition-smooth);
}
.nav-link:hover, .nav-link.active {
  color: var(--gold-accent) !important;
}
.btn-login {
  border: 1px solid rgba(212, 175, 55, 0.7);
  color: var(--gold-accent);
  background: transparent;
  padding: 8px 22px;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition-smooth);
}
.btn-login:hover {
  background: rgba(212, 175, 55, 0.08);
  border-color: var(--gold-light);
  color: var(--gold-light);
}
.btn-signup {
  background: var(--accent-gradient);
  border: none;
  color: #0B0C0E;
  font-weight: 700;
  padding: 9px 26px;
  border-radius: 50px;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 18px rgba(212, 175, 55, 0.28);
}
.btn-signup:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(212, 175, 55, 0.35);
  color: #0B0C0E;
}
.navbar-toggler {
  border: 1px solid rgba(255,255,255,0.15);
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(212, 175, 55, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.hero-section {
  background: linear-gradient(180deg, #101217 0%, #0B0C0E 90%);
  padding: 120px 0 60px;
  position: relative;
  overflow: hidden;
}
.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
}
.hero-desc {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 28px 0 38px;
}
.section-title {
  font-weight: 700;
  font-size: 2.2rem;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 700px;
  margin-bottom: 40px;
}
.grid-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
  transition: var(--transition-smooth);
  height: 100%;
}
.grid-card:hover {
  border-color: var(--card-hover-border);
  box-shadow: var(--shadow-gold);
  transform: translateY(-6px);
}
.resource-card {
  background: var(--tertiary-bg);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  transition: var(--transition-smooth);
}
.resource-card:hover { transform: translateY(-4px); }
.post-item {
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 16px 0;
}
.post-item:last-child { border-bottom: none; }
.community-feat { 
  background: var(--secondary-bg); 
  border-radius: var(--border-radius-lg); 
  padding: 28px; 
  text-align: center; 
  border: 1px solid rgba(212,175,55,0.1);
}
.community-feat i { color: var(--gold-accent); font-size: 2.2rem; margin-bottom: 12px; }
.btn-gold-outline {
  border: 1px solid var(--gold-accent);
  color: var(--gold-accent);
  background: transparent;
  padding: 10px 28px;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition-smooth);
}
.btn-gold-outline:hover {
  background: var(--gold-accent);
  color: #0B0C0E;
}
.btn-gold {
  background: var(--accent-gradient);
  border: none;
  color: #0B0C0E;
  font-weight: 700;
  padding: 12px 34px;
  border-radius: 50px;
  box-shadow: 0 4px 18px rgba(212, 175, 55, 0.3);
  transition: var(--transition-smooth);
}
.btn-gold:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  color: #0B0C0E;
}
footer {
  background: var(--secondary-bg);
  border-top: 1px solid rgba(212, 175, 55, 0.15);
  padding: 48px 0 28px;
  font-size: 0.9rem;
}
.gold-text { color: var(--gold-accent); }
.fab-container {
  position: fixed;
  left: 20px;
  bottom: 100px;
  z-index: 50;
}
.fab-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--accent-gradient);
  border: 2px solid var(--gold-accent);
  box-shadow: 0 6px 22px rgba(212,175,55,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0B0C0E;
  font-size: 1.8rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  opacity: 0.85;
}
.fab-btn:hover {
  opacity: 1;
  transform: scale(1.1);
}
@media (max-width: 768px) {
  .hero-title { font-size: 2.2rem; }
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}