/* roulang page: index */
@import url('/assets/css/vendor/9723b7396f-css2.css');
:root {
--cyber-bg: #0F0C20;
--deep-blue: #0B1A30;
--lime: #CCFF00;
--cyan: #00F0FF;
--silver: #A6ACAF;
--white: #FFFFFF;
--dark-card: rgba(15, 12, 32, 0.9);
--border-glow: rgba(0, 240, 255, 0.4);
--shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
--shadow-lime: 0 0 10px rgba(204, 255, 0, 0.3);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', 'system-ui', sans-serif; background: var(--cyber-bg); color: var(--white); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
.container { max-width: 1280px; margin-left: auto; margin-right: auto; padding-left: 1.5rem; padding-right: 1.5rem; }
.neon-border { border: 1px solid transparent; background-clip: padding-box; position: relative; }
.neon-border::before { content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: linear-gradient(135deg, var(--cyan), var(--lime)); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.glass-card { background: rgba(11, 26, 48, 0.7); backdrop-filter: blur(12px); border: 1px solid rgba(0, 240, 255, 0.2); }
.text-gradient { background: linear-gradient(135deg, var(--cyan), var(--lime)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.btn-primary { background: linear-gradient(135deg, #00F0FF, #CCFF00); color: #0F0C20; font-weight: 700; border: none; padding: 0.75rem 2rem; border-radius: 9999px; transition: all 0.3s ease; cursor: pointer; box-shadow: var(--shadow-neon); }
.btn-primary:hover { transform: scale(1.05); box-shadow: 0 0 25px rgba(0, 240, 255, 0.8); }
.btn-outline { background: transparent; border: 2px solid var(--cyan); color: var(--cyan); font-weight: 600; padding: 0.7rem 1.8rem; border-radius: 9999px; transition: all 0.3s ease; cursor: pointer; }
.btn-outline:hover { background: var(--cyan); color: #0F0C20; box-shadow: var(--shadow-neon); }
.fab-left { position: fixed; left: 1rem; bottom: 6rem; z-index: 50; width: 56px; height: 56px; background: rgba(15, 12, 32, 0.85); backdrop-filter: blur(8px); border-radius: 9999px; border: 2px solid transparent; background-clip: padding-box; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.3s ease; animation: float 3s ease-in-out infinite; }
.fab-left::before { content: ''; position: absolute; inset: -2px; border-radius: 9999px; padding: 2px; background: linear-gradient(135deg, #CCFF00, #00F0FF); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.fab-left:hover { transform: scale(1.15); opacity: 1; box-shadow: 0 0 25px rgba(0, 240, 255, 0.8); }
.fab-left i { color: #CCFF00; font-size: 1.5rem; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
.notification-dot { position: absolute; top: 6px; right: 6px; width: 12px; height: 12px; background: #FF007F; border-radius: 50%; animation: blink 1.5s infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
.progress-ring-circle { transition: stroke-dashoffset 0.6s ease; }
.card-hover:hover { transform: translateY(-4px); box-shadow: 0 0 20px rgba(0, 240, 255, 0.4); }
@media (max-width: 768px) {
.container { padding-left: 1rem; padding-right: 1rem; }
nav .nav-links { display: none; }
nav .mobile-menu-btn { display: flex; }
.fab-left { bottom: 5rem; width: 48px; height: 48px; }
}
@media (min-width: 769px) {
nav .mobile-menu-btn { display: none; }
}

/* roulang page: article */
:root {
            --cyber-bg: #0F0C20;
            --deep-blue: #0B1A30;
            --lime: #CCFF00;
            --cyan: #00F0FF;
            --silver: #A6ACAF;
            --white: #FFFFFF;
            --dark-card: rgba(15, 12, 32, 0.9);
            --border-glow: rgba(0, 240, 255, 0.4);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-lime: 0 0 10px rgba(204, 255, 0, 0.3);
        }
        @import url('/assets/css/vendor/9723b7396f-css2.css');
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', 'system-ui', sans-serif;
            background: var(--cyber-bg);
            color: var(--white);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .glass-card {
            background: rgba(11, 26, 48, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 16px;
            transition: all 0.3s ease;
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--cyan), var(--lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .btn-primary {
            background: linear-gradient(135deg, #00F0FF, #CCFF00);
            color: #0F0C20;
            font-weight: 700;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 9999px;
            transition: all 0.3s ease;
            cursor: pointer;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.95rem;
        }
        .btn-primary:hover {
            transform: scale(1.06);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.8);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--cyan);
            color: var(--cyan);
            font-weight: 600;
            padding: 0.7rem 1.8rem;
            border-radius: 9999px;
            transition: all 0.3s ease;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-outline:hover {
            background: var(--cyan);
            color: #0F0C20;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.6);
        }
        .category-badge {
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--cyan);
            padding: 0.35rem 1rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
            letter-spacing: 0.02em;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            color: #E2E8F0;
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
            color: var(--white);
            background: linear-gradient(135deg, var(--cyan), var(--lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--cyan);
        }
        .article-body ul, .article-body ol {
            margin-bottom: 1.5rem;
            padding-left: 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.75rem;
            color: #CBD5E1;
        }
        .article-body blockquote {
            border-left: 4px solid var(--cyan);
            padding-left: 1.5rem;
            margin: 2rem 0;
            color: var(--silver);
            font-style: italic;
            background: rgba(0, 240, 255, 0.05);
            padding: 1.5rem;
            border-radius: 0 12px 12px 0;
        }
        .article-body img {
            border-radius: 12px;
            margin: 1.5rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .rating-stars {
            color: #FFD700;
            font-size: 1.1rem;
            letter-spacing: 2px;
        }
        .highlight-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(204, 255, 0, 0.05));
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 2rem 0;
        }
        .fab-container {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(11, 26, 48, 0.8);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: 50%;
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            animation: float 3s ease-in-out infinite;
        }
        .fab-container::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            padding: 3px;
            background: linear-gradient(135deg, #00F0FF, #CCFF00);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }
        .fab-container:hover {
            transform: scale(1.12);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
        }
        .fab-container i {
            font-size: 1.6rem;
            color: var(--cyan);
            position: relative;
            z-index: 2;
        }
        .fab-notification {
            position: absolute;
            top: 4px;
            right: 6px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            animation: pulse-dot 1.5s infinite;
            z-index: 3;
        }
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.3); }
        }
        nav .nav-links {
            display: none;
        }
        nav .mobile-menu-btn {
            display: flex;
        }
        @media (min-width: 769px) {
            nav .nav-links {
                display: flex;
            }
            nav .mobile-menu-btn {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .fab-container {
                width: 48px;
                height: 48px;
                left: 1rem;
                bottom: 5rem;
            }
        }

/* roulang page: category1 */
/* === GLOBAL DESIGN SYSTEM (Mirrored from Index) === */
@import url('/assets/css/vendor/9723b7396f-css2.css');
:root {
  --cyber-bg: #0F0C20;
  --deep-blue: #0B1A30;
  --lime: #CCFF00;
  --cyan: #00F0FF;
  --silver: #A6ACAF;
  --white: #FFFFFF;
  --dark-card: rgba(15, 12, 32, 0.9);
  --border-glow: rgba(0, 240, 255, 0.4);
  --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
  --shadow-lime: 0 0 10px rgba(204, 255, 0, 0.3);
}
body { font-family: 'Inter', 'system-ui', sans-serif; background: var(--cyber-bg); color: var(--white); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
/* Container */
.container { max-width: 1280px; margin-left: auto; margin-right: auto; padding-left: 1.5rem; padding-right: 1.5rem; }
/* Text Gradient */
.text-gradient { background: linear-gradient(135deg, var(--cyan), var(--lime)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
/* Neon Border Effect */
.neon-border { border: 1px solid transparent; position: relative; background-clip: padding-box; }
.neon-border::before { content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: linear-gradient(135deg, var(--cyan), var(--lime)); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
/* Glass Card */
.glass-card { background: rgba(11, 26, 48, 0.7); backdrop-filter: blur(12px); border: 1px solid rgba(0, 240, 255, 0.2); }
/* Buttons */
.btn-primary { background: linear-gradient(135deg, #00F0FF, #CCFF00); color: #0F0C20; font-weight: 700; border: none; padding: 0.75rem 2rem; border-radius: 9999px; transition: all 0.3s ease; cursor: pointer; display: inline-block; box-shadow: var(--shadow-neon); }
.btn-primary:hover { transform: scale(1.05); box-shadow: 0 0 25px rgba(0, 240, 255, 0.8); }
.btn-outline { background: transparent; border: 2px solid var(--cyan); color: var(--cyan); font-weight: 600; padding: 0.7rem 1.8rem; border-radius: 9999px; transition: all 0.3s ease; cursor: pointer; display: inline-block; }
.btn-outline:hover { background: var(--cyan); color: #0F0C20; box-shadow: var(--shadow-neon); }
/* Card Hover */
.card-hover { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.card-hover:hover { transform: translateY(-4px); box-shadow: 0 0 20px rgba(0, 240, 255, 0.4); }
/* Typography */
h1, h2, h3 { font-weight: 700; line-height: 1.3; }
h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.5rem; }
.bg-cyber { background: var(--cyber-bg); }
.bg-deep { background: var(--deep-blue); }
.text-silver { color: var(--silver); }
.text-cyan { color: var(--cyan); }
.text-lime { color: var(--lime); }
.border-cyan { border-color: var(--cyan); }
/* FAB */
.fab-left { position: fixed; left: 1.5rem; bottom: 6rem; z-index: 50; background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(8px); border: 2px solid transparent; background-clip: padding-box; border-radius: 9999px; width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; transition: all 0.3s ease; box-shadow: 0 0 15px rgba(0, 240, 255, 0.5); cursor: pointer; }
.fab-left:hover { transform: scale(1.1); box-shadow: 0 0 25px rgba(0, 240, 255, 0.8); }
.fab-left i { font-size: 1.6rem; color: var(--cyan); transition: all 0.3s ease; }
.fab-left:hover i { color: var(--lime); transform: rotate(360deg); }
/* RESPONSIVE */
nav .nav-links { display: flex; }
nav .mobile-menu-btn { display: none; }
@media (max-width: 1024px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.8rem; }
}
@media (max-width: 768px) {
  .container { padding-left: 1rem; padding-right: 1rem; }
  nav .nav-links { display: none; }
  nav .mobile-menu-btn { display: flex; }
  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.6rem; }
  .fab-left { bottom: 5rem; width: 48px; height: 48px; }
}
@media (min-width: 769px) {
  nav .mobile-menu-btn { display: none; }
}

/* roulang page: category2 */
:root {
            --cyber-bg: #0F0C20;
            --deep-blue: #0B1A30;
            --lime: #CCFF00;
            --cyan: #00F0FF;
            --silver: #A6ACAF;
            --white: #FFFFFF;
            --dark-card: rgba(15, 12, 32, 0.9);
            --border-glow: rgba(0, 240, 255, 0.4);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-lime: 0 0 10px rgba(204, 255, 0, 0.3);
        }

        @import url('/assets/css/vendor/9723b7396f-css2.css');

        body {
            font-family: 'Inter', 'system-ui', sans-serif;
            background: var(--cyber-bg);
            color: var(--white);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            margin: 0;
            padding: 0;
        }

        * {
            box-sizing: border-box;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.2s ease;
        }

        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        .neon-border {
            border: 1px solid transparent;
            background-clip: padding-box;
            position: relative;
        }

        .neon-border::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: inherit;
            padding: 1px;
            background: linear-gradient(135deg, var(--cyan), var(--lime));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        .glass-card {
            background: rgba(11, 26, 48, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--cyan), var(--lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .btn-primary {
            background: linear-gradient(135deg, #00F0FF, #CCFF00);
            color: #0F0C20;
            font-weight: 700;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 9999px;
            transition: all 0.3s ease;
            cursor: pointer;
            box-shadow: var(--shadow-neon);
            display: inline-block;
            text-align: center;
        }

        .btn-primary:hover {
            transform: scale(1.05);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--cyan);
            color: var(--cyan);
            font-weight: 600;
            padding: 0.7rem 1.8rem;
            border-radius: 9999px;
            transition: all 0.3s ease;
            cursor: pointer;
            display: inline-block;
            text-align: center;
        }

        .btn-outline:hover {
            background: var(--cyan);
            color: #0F0C20;
            box-shadow: var(--shadow-neon);
        }

        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
        }

        .step-number {
            background: linear-gradient(135deg, var(--cyan), var(--lime));
            color: #0F0C20;
            font-weight: 900;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 1.1rem;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
            flex-shrink: 0;
        }

        .faq-item {
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 1.25rem 0;
            transition: all 0.2s ease;
        }

        .faq-question {
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--white);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, margin-top 0.3s ease;
            color: var(--silver);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            margin-top: 1rem;
        }

        .faq-item.active .faq-toggle i {
            transform: rotate(180deg);
            color: var(--lime);
        }

        .bg-deep-blue-gradient {
            background: linear-gradient(180deg, #0B1A30 0%, #0F0C20 100%);
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            nav .nav-links {
                display: none;
            }

            nav .mobile-menu-btn {
                display: flex;
            }

            .fab-left {
                bottom: 5rem;
                width: 48px;
                height: 48px;
            }
        }

        @media (min-width: 769px) {
            nav .mobile-menu-btn {
                display: none;
            }
        }

/* roulang page: category3 */
:root {
--cyber-bg: #0F0C20;
--deep-blue: #0B1A30;
--lime: #CCFF00;
--cyan: #00F0FF;
--silver: #A6ACAF;
--white: #FFFFFF;
--dark-card: rgba(15, 12, 32, 0.9);
--border-glow: rgba(0, 240, 255, 0.4);
--shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
--shadow-lime: 0 0 10px rgba(204, 255, 0, 0.3);
}
@import url('/assets/css/vendor/9723b7396f-css2.css');
body { font-family: 'Inter', 'system-ui', sans-serif; background: var(--cyber-bg); color: var(--white); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
.container { max-width: 1280px; margin-left: auto; margin-right: auto; padding-left: 1.5rem; padding-right: 1.5rem; }
.neon-border { border: 1px solid transparent; background-clip: padding-box; position: relative; border-radius: 1rem; }
.neon-border::before { content: ''; position: absolute; inset: 0; border-radius: 1rem; padding: 1px; background: linear-gradient(135deg, var(--cyan), var(--lime)); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.glass-card { background: rgba(11, 26, 48, 0.7); backdrop-filter: blur(12px); border: 1px solid rgba(0, 240, 255, 0.2); border-radius: 1rem; }
.text-gradient { background: linear-gradient(135deg, var(--cyan), var(--lime)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.btn-primary { background: linear-gradient(135deg, #00F0FF, #CCFF00); color: #0F0C20; font-weight: 700; border: none; padding: 0.75rem 2rem; border-radius: 9999px; transition: all 0.3s ease; cursor: pointer; box-shadow: var(--shadow-neon); display: inline-block; text-align: center; }
.btn-primary:hover { transform: scale(1.05); box-shadow: 0 0 25px rgba(0, 240, 255, 0.8); }
.btn-outline { background: transparent; border: 2px solid var(--cyan); color: var(--cyan); font-weight: 600; padding: 0.7rem 1.8rem; border-radius: 9999px; transition: all 0.3s ease; cursor: pointer; display: inline-block; text-align: center; }
.btn-outline:hover { background: var(--cyan); color: #0F0C20; box-shadow: var(--shadow-neon); }
.card-hover:hover { transform: translateY(-4px); box-shadow: 0 0 20px rgba(0, 240, 255, 0.4); }

nav .nav-links { display: none; }
@media (min-width: 769px) {
  nav .nav-links { display: flex; }
  nav .mobile-menu-btn { display: none; }
}
@media (max-width: 768px) {
  .container { padding-left: 1rem; padding-right: 1rem; }
  nav .nav-links { display: none; }
  nav .mobile-menu-btn { display: flex; }
}

.fab-left {
  position: fixed;
  left: 1rem;
  bottom: 6rem;
  z-index: 50;
  width: 56px;
  height: 56px;
  background: rgba(15, 12, 32, 0.8);
  backdrop-filter: blur(12px);
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid transparent;
  background-image: linear-gradient(rgba(15,12,32,0.9), rgba(15,12,32,0.9)), linear-gradient(135deg, #00F0FF, #CCFF00);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  box-shadow: 0 0 15px rgba(0,240,255,0.5);
  cursor: pointer;
  transition: all 0.3s ease;
  animation: float 3s ease-in-out infinite;
}
.fab-left:hover {
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(0,240,255,0.8);
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.section-title { font-size: 2rem; font-weight: 800; margin-bottom: 2.5rem; }
.section-subtitle { color: var(--silver); font-size: 1.125rem; margin-bottom: 3rem; max-width: 700px; }

.step-card {
  background: var(--dark-card);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 1.5rem;
  padding: 2rem;
  transition: all 0.3s ease;
}
.step-card:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}
.step-number {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--cyan), var(--lime));
  color: var(--cyber-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.payment-badge {
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.4);
  border-radius: 9999px;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--cyan);
}

footer .footer-link { color: var(--silver); transition: color 0.2s; }
footer .footer-link:hover { color: var(--lime); }

/* roulang page: category4 */
/* ========== DESIGN SYSTEM (ALIGNED WITH INDEX) ========== */
        @import url('/assets/css/vendor/9723b7396f-css2.css');
        :root {
            --cyber-bg: #0F0C20;
            --deep-blue: #0B1A30;
            --lime: #CCFF00;
            --cyan: #00F0FF;
            --silver: #A6ACAF;
            --white: #FFFFFF;
            --dark-card: rgba(15, 12, 32, 0.9);
            --border-glow: rgba(0, 240, 255, 0.4);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-lime: 0 0 10px rgba(204, 255, 0, 0.3);
        }
        body {
            font-family: 'Inter', 'system-ui', sans-serif;
            background: var(--cyber-bg);
            color: var(--white);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
        .container { max-width: 1280px; margin-left: auto; margin-right: auto; padding-left: 1.5rem; padding-right: 1.5rem; }
        .neon-border { border: 1px solid transparent; background-clip: padding-box; position: relative; }
        .neon-border::before { content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: linear-gradient(135deg, var(--cyan), var(--lime)); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
        .glass-card { background: rgba(11, 26, 48, 0.7); backdrop-filter: blur(12px); border: 1px solid rgba(0, 240, 255, 0.2); }
        .text-gradient { background: linear-gradient(135deg, var(--cyan), var(--lime)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .btn-primary { background: linear-gradient(135deg, #00F0FF, #CCFF00); color: #0F0C20; font-weight: 700; border: none; padding: 0.75rem 2rem; border-radius: 9999px; transition: all 0.3s ease; cursor: pointer; box-shadow: var(--shadow-neon); }
        .btn-primary:hover { transform: scale(1.05); box-shadow: 0 0 25px rgba(0, 240, 255, 0.8); }
        .btn-outline { background: transparent; border: 2px solid var(--cyan); color: var(--cyan); font-weight: 600; padding: 0.7rem 1.8rem; border-radius: 9999px; transition: all 0.3s ease; cursor: pointer; }
        .btn-outline:hover { background: var(--cyan); color: #0F0C20; box-shadow: var(--shadow-neon); }
        .card-hover:hover { transform: translateY(-4px); box-shadow: 0 0 20px rgba(0, 240, 255, 0.4); }
        /* FAB Left: Option 2 Cyber & Neon Style */
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 52px;
            height: 52px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            border: 2px solid transparent;
            border-radius: 9999px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            background-clip: padding-box;
            transition: all 0.3s ease;
            opacity: 0.8;
            cursor: pointer;
        }
        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 9999px;
            padding: 2px;
            background: linear-gradient(135deg, var(--lime), var(--cyan));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            z-index: -1;
        }
        .fab-left:hover {
            opacity: 1;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.9);
            transform: scale(1.1);
        }
        .fab-left i {
            color: var(--lime);
            font-size: 1.5rem;
        }
        /* Mobile Nav Adjustments */
        @media (max-width: 768px) {
            nav .nav-links { display: none; }
            nav .mobile-menu-btn { display: flex; }
            .container { padding-left: 1rem; padding-right: 1rem; }
            .fab-left { width: 48px; height: 48px; bottom: 5rem; left: 0.75rem; }
        }
        @media (min-width: 769px) {
            nav .mobile-menu-btn { display: none; }
            nav .nav-links { display: flex; }
        }
        /* Custom styles for this category page */
        .promo-badge {
            background: linear-gradient(135deg, #FF007F, #CCFF00);
            color: #0F0C20;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
            display: inline-block;
            letter-spacing: 0.05em;
        }
        .step-number {
            background: var(--cyan);
            color: #0F0C20;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            flex-shrink: 0;
        }
        .promo-card {
            transition: all 0.3s ease;
            border: 1px solid rgba(0, 240, 255, 0.15);
        }
        .promo-card:hover {
            border-color: var(--lime);
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.25);
        }