/* roulang page: index */
:root {
    --bg-primary: #0A2E1C;
    --bg-secondary: #0F3D26;
    --bg-card: #143D2A;
    --accent-gold: #FFD700;
    --accent-gold-hover: #E6BE00;
    --accent-red: #D32F2F;
    --accent-red-hover: #B71C1C;
    --text-white: #FFFFFF;
    --text-light: #D1F2EB;
    --text-muted: #A3C9BA;
    --border-subtle: rgba(255,215,0,0.2);
    --border-gold: #FFD700;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
    --shadow-md: 0 6px 20px rgba(0,0,0,0.5);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.6);
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 50px;
    --transition: all 0.25s ease;
    --font-heading: 'Segoe UI', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Segoe UI', 'SF Pro Text', -apple-system, BlinkMacSystemFont, sans-serif;
    --container-max: 1260px;
    --header-height: 74px;
}

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

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

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, #0A2E1C 0%, #0C3322 40%, #0A2E1C 100%);
    color: var(--text-white);
    line-height: 1.65;
    min-height: 100vh;
    overflow-x: hidden;
    padding-top: 0px;
}

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

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

ul, ol {
    list-style: none;
    padding-left: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.75rem;
}

.container {
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
}

/* Header & Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1050;
    background: rgba(10, 46, 28, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255,215,0,0.15);
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.header-container {
    max-width: var(--container-max);
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    background: linear-gradient(135deg, #FFD700, #FFA000);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.3px;
    white-space: nowrap;
    position: relative;
    z-index: 2;
}

.logo:hover {
    filter: brightness(1.1);
    transform: scale(1.02);
}

.nav-desktop {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-desktop a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-light);
    position: relative;
    padding: 0.4rem 0;
}

.nav-desktop a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-gold), #FFA000);
    transition: width 0.25s ease;
    border-radius: 1px;
}

.nav-desktop a:hover {
    color: var(--accent-gold);
}

.nav-desktop a:hover::after {
    width: 100%;
}

.nav-desktop a.active {
    color: var(--accent-gold);
    font-weight: 700;
}

.nav-desktop a.active::after {
    width: 100%;
    background: var(--accent-gold);
    height: 2.5px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.btn-login-text {
    background: transparent;
    border: none;
    color: var(--text-light);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.55rem 1.2rem;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: var(--transition);
}

.btn-login-text:hover {
    color: var(--accent-gold);
    background: rgba(255,215,0,0.08);
}

.btn-register {
    background: linear-gradient(135deg, #FFD700, #FFA000);
    color: #0A2E1C;
    font-weight: 700;
    font-size: 0.95rem;
    border: none;
    padding: 0.6rem 1.6rem;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 12px rgba(255,215,0,0.2);
}

.btn-register:hover {
    background: linear-gradient(135deg, #FFC000, #FF8F00);
    box-shadow: 0 4px 20px rgba(255,215,0,0.35);
    transform: translateY(-1px);
    color: #051f10;
}

.btn-register:active {
    transform: scale(0.97);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--accent-gold);
    font-size: 1.7rem;
    cursor: pointer;
    padding: 0.4rem;
    transition: var(--transition);
}

.mobile-toggle:hover {
    color: #fff;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(10, 46, 24, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,215,0,0.2);
    padding: 1rem 1.5rem 1.5rem;
    z-index: 1040;
    flex-direction: column;
    gap: 0.75rem;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-light);
    padding: 0.65rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.mobile-menu a:hover {
    color: var(--accent-gold);
}

/* Hero Section */
.hero {
    padding-top: calc(var(--header-height) + 2.5rem);
    padding-bottom: 3.5rem;
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10,46,28,0.85) 0%, rgba(15,61,38,0.75) 60%, rgba(10,46,28,0.9) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 0.9fr;
    gap: 2.5rem;
    align-items: center;
}

.hero-left h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 1rem;
}

.hero-left h1 .gold-text {
    background: linear-gradient(135deg, #FFD700, #FFC107);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-left p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    max-width: 540px;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-bottom: 2rem;
}

.hero-badge {
    background: rgba(255,215,0,0.12);
    border: 1px solid rgba(255,215,0,0.25);
    color: var(--accent-gold);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1.1rem;
    border-radius: var(--radius-pill);
}

.hero-rings {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 2rem;
}

.ring-item {
    text-align: center;
}

.ring-circle {
    background: transparent;
    border: 5px solid var(--accent-gold);
    border-radius: 50%;
    width: 90px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.6rem;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-gold);
    position: relative;
}

.ring-circle::before {
    content: '';
    position: absolute;
    inset: -7px;
    border-radius: 50%;
    border: 2px dotted rgba(255,215,0,0.4);
    animation: spinRing 12s linear infinite;
}

@keyframes spinRing {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.ring-item span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-hero-primary {
    background: linear-gradient(135deg, #FFD700, #FFA000);
    color: #0A2E1C;
    font-weight: 700;
    padding: 0.85rem 2.2rem;
    border-radius: var(--radius-pill);
    border: none;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 18px rgba(255,215,0,0.25);
}

.btn-hero-primary:hover {
    background: linear-gradient(135deg, #FFC000, #FF8F00);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(255,215,0,0.4);
    color: #051f10;
}

.btn-hero-secondary {
    background: transparent;
    border: 2px solid rgba(255,215,0,0.6);
    color: var(--accent-gold);
    font-weight: 600;
    padding: 0.8rem 2rem;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: var(--transition);
}

.btn-hero-secondary:hover {
    border-color: #FFD700;
    background: rgba(255,215,0,0.08);
}

.hero-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrap {
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.6), 0 0 0 2px rgba(255,215,0,0.2);
    position: relative;
}

.hero-image-wrap img {
    object-fit: cover;
    width: 100%;
    height: auto;
}

/* Sections General */
section {
    padding: 4.5rem 0;
}

.section-label {
    display: inline-block;
    background: rgba(255,215,0,0.1);
    color: var(--accent-gold);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    padding: 0.35rem 1rem;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255,215,0,0.2);
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 0.8rem;
}

.section-desc {
    color: var(--text-light);
    font-size: 1.05rem;
    max-width: 680px;
    margin-bottom: 2.5rem;
}

/* News list */
.news-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 2rem;
    align-items: start;
}

.news-list a {
    display: block;
    padding: 1rem 1.2rem;
    border-left: 3px solid transparent;
    margin-bottom: 0.5rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: var(--transition);
    color: var(--text-light);
}

.news-list a:hover {
    border-left-color: var(--accent-gold);
    background: rgba(255,215,0,0.05);
    color: #fff;
}

.news-list h4 {
    font-size: 1.05rem;
    margin-bottom: 0.2rem;
}

.news-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.news-sidebar {
    background: rgba(15,61,38,0.5);
    border-radius: var(--radius-md);
    padding: 2rem 1.8rem;
    border: 1px solid rgba(255,215,0,0.1);
}

/* Feature cards */
.feature-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.8rem;
}

.feature-card {
    background: rgba(20,61,42,0.7);
    border: 1px solid rgba(255,215,0,0.1);
    border-radius: var(--radius-md);
    padding: 2rem 1.6rem;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(0,0,0,0.3);
}

.feature-icon {
    width: 55px;
    height: 55px;
    background: rgba(255,215,0,0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-gold);
    font-size: 1.6rem;
    margin-bottom: 1.2rem;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.faq-item {
    background: rgba(20,61,42,0.5);
    border: 1px solid rgba(255,215,0,0.08);
    border-radius: var(--radius-sm);
    padding: 1.4rem 1.6rem;
    cursor: pointer;
    transition: var(--transition);
}

.faq-item:hover {
    background: rgba(20,61,42,0.8);
    border-color: rgba(255,215,0,0.2);
}

.faq-item h4 {
    font-size: 1.05rem;
    color: var(--accent-gold);
    margin-bottom: 0.4rem;
}

.faq-item p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0;
}

/* Security section */
.security-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.8rem;
}

.security-card {
    background: transparent;
    border: 1px solid rgba(255,215,0,0.1);
    border-radius: var(--radius-md);
    padding: 2rem 1.6rem;
    text-align: left;
}

.security-card .feature-icon {
    margin-left: 0;
    margin-right: auto;
}

/* App section */
.app-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
}

.app-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.app-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn-app {
    background: linear-gradient(135deg, #FFD700, #FFA000);
    color: #0A2E1C;
    font-weight: 700;
    padding: 0.75rem 1.8rem;
    border-radius: var(--radius-pill);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-app:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(255,215,0,0.35);
}

/* Footer */
.site-footer {
    background: #051A0F;
    border-top: 2px solid rgba(255,215,0,0.18);
    padding: 3rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 2rem;
}

.footer-col h4 {
    color: var(--accent-gold);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 0.25rem 0;
}

.footer-col a:hover {
    color: var(--accent-gold);
}

.footer-bottom {
    margin-top: 2.5rem;
    padding-top: 1.8rem;
    border-top: 1px solid rgba(255,255,255,0.06);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

.footer-badges span {
    font-weight: 600;
    color: var(--accent-gold);
    font-size: 0.85rem;
}

/* FAB */
.fab-left {
    position: fixed;
    left: 1.5rem;
    bottom: 6rem;
    z-index: 1055;
    background: linear-gradient(145deg, #1A1A1A, #0A0A0A);
    border: 2px solid #FFD700;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #FFD700;
    box-shadow: 0 4px 20px rgba(255,215,0,0.3);
    transition: var(--transition);
    animation: floatBreath 3s infinite;
    cursor: pointer;
}

.fab-left:hover {
    transform: scale(1.12);
    box-shadow: 0 0 30px rgba(255,215,0,0.5);
}

@keyframes floatBreath {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .hero-left h1 {
        font-size: 2.2rem;
    }
    .news-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-desktop {
        display: none;
    }
    .mobile-toggle {
        display: block;
    }
    .header-actions .btn-login-text,
    .header-actions .btn-register {
        display: inline-flex;
    }
    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + 1.5rem);
        padding-bottom: 2.5rem;
    }
}

@media (max-width: 520px) {
    .hero-rings {
        gap: 1.2rem;
    }
    .ring-circle {
        width: 68px;
        height: 68px;
        font-size: 1rem;
    }
    .btn-register {
        padding: 0.5rem 1.2rem;
        font-size: 0.9rem;
    }
}

/* roulang page: article */
:root {
            --primary: #FFD700;
            --primary-dark: #DAA520;
            --secondary: #D32F2F;
            --accent: #C5A059;
            --bg-deep: #0A0F0A;
            --bg-dark: #121C14;
            --bg-card: #1A2D1F;
            --bg-card-hover: #1F3525;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #8FB3A5;
            --border-subtle: #2D4A35;
            --border-gold: #FFD700;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.15);
            --shadow-gold-hover: 0 8px 35px rgba(255, 215, 0, 0.28);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-heading: 'Segoe UI', 'Inter', 'Roboto', sans-serif;
            --font-body: 'Segoe UI', 'Inter', 'Roboto', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .container-narrow {
            max-width: 880px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(10, 15, 10, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition);
        }

        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
            height: 64px;
        }

        .logo {
            font-family: var(--font-heading);
            font-size: 1.55rem;
            font-weight: 800;
            letter-spacing: -0.3px;
            background: linear-gradient(135deg, #FFD700 0%, #FFC107 50%, #FFB300 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 18px rgba(255, 215, 0, 0.4);
            white-space: nowrap;
            transition: var(--transition);
        }
        .logo:hover {
            text-shadow: 0 0 28px rgba(255, 215, 0, 0.65);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-desktop a {
            position: relative;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-desktop a:hover {
            color: #FFFFFF;
            background: rgba(255, 215, 0, 0.06);
        }

        .nav-desktop a.active {
            color: var(--primary);
            background: rgba(255, 215, 0, 0.1);
            box-shadow: inset 0 0 0 1px rgba(255, 215, 0, 0.25);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login-text {
            background: transparent;
            border: none;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.92rem;
            padding: 8px 14px;
            border-radius: 24px;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-login-text:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }

        .btn-register {
            background: linear-gradient(135deg, #FFD700 0%, #FFA000 100%);
            color: #0A0F0A;
            border: none;
            font-weight: 700;
            font-size: 0.92rem;
            padding: 9px 22px;
            border-radius: 24px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 2px 10px rgba(255, 215, 0, 0.25);
        }
        .btn-register:hover {
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.45);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 6px 10px;
        }

        /* ========== ARTICLE BANNER (VIDEO-STYLE HERO) ========== */
        .article-banner {
            position: relative;
            width: 100%;
            min-height: 55vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: var(--bg-dark);
            margin-top: 64px;
        }

        .article-banner-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .article-banner-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.35) saturate(0.9);
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 10, 0.5) 0%, rgba(10, 15, 10, 0.88) 100%);
            z-index: 1;
        }

        .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 40px 20px;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid rgba(255, 215, 0, 0.35);
            border-radius: 30px;
            padding: 6px 18px;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 20px;
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }

        .banner-content h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #FFFFFF;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
        }

        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 18px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .banner-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .play-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 68px;
            height: 68px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.2);
            border: 2px solid var(--primary);
            color: var(--primary);
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
            margin-bottom: 20px;
            box-shadow: var(--shadow-gold);
        }
        .play-btn:hover {
            background: var(--primary);
            color: #0A0F0A;
            transform: scale(1.08);
            box-shadow: var(--shadow-gold-hover);
        }

        /* ========== ARTICLE BODY ========== */
        .article-main {
            padding: 50px 0 70px;
            background: var(--bg-deep);
        }

        .article-content-wrapper {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
        }

        .article-content {
            font-size: 1.05rem;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 1.7rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-top: 32px;
            margin-bottom: 14px;
            position: relative;
            padding-left: 18px;
        }
        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            background: var(--primary);
            border-radius: 2px;
        }

        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-top: 24px;
            margin-bottom: 10px;
        }

        .article-content p {
            margin-bottom: 16px;
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 16px;
            padding-left: 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
        }

        .article-content a {
            color: var(--primary);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: #FFC107;
        }

        .article-cta-box {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.08) 0%, rgba(255, 215, 0, 0.03) 100%);
            border: 1px solid rgba(255, 215, 0, 0.3);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            margin-top: 36px;
            text-align: center;
        }
        .article-cta-box h3 {
            font-weight: 700;
            margin-bottom: 8px;
            color: #FFFFFF;
        }
        .article-cta-box p {
            color: var(--text-muted);
            margin-bottom: 18px;
        }
        .btn-cta-gold {
            display: inline-block;
            background: linear-gradient(135deg, #FFD700, #FFA000);
            color: #0A0F0A;
            font-weight: 800;
            font-size: 1rem;
            padding: 12px 32px;
            border-radius: 30px;
            transition: var(--transition);
            box-shadow: var(--shadow-gold);
            text-decoration: none;
        }
        .btn-cta-gold:hover {
            box-shadow: var(--shadow-gold-hover);
            transform: translateY(-2px);
            color: #0A0F0A;
        }

        /* Not found state */
        .not-found {
            text-align: center;
            padding: 80px 20px;
            color: var(--text-muted);
        }
        .not-found i {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: block;
        }

        /* ========== FAB ========== */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 110px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--primary);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            transition: var(--transition);
            animation: fabFloat 2.6s ease-in-out infinite;
        }
        .fab-left:hover {
            background: var(--primary);
            color: #0A0F0A;
            transform: scale(1.12);
            box-shadow: 0 8px 35px rgba(255, 215, 0, 0.5);
        }
        .fab-left .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #FF0000;
            border: 2px solid var(--bg-deep);
            animation: blink 1.4s ease-in-out infinite;
        }

        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.25; }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 30px;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.88rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #FFFFFF;
            padding-left: 4px;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.85rem;
        }
        .footer-badges {
            display: flex;
            justify-content: center;
            gap: 24px;
            margin-top: 12px;
            flex-wrap: wrap;
        }
        .footer-badges span {
            display: flex;
            align-items: center;
            gap: 5px;
            color: var(--text-muted);
            font-size: 0.82rem;
        }
        .footer-badges i {
            color: var(--primary);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-content-wrapper {
                padding: 28px 22px;
            }
            .banner-content h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .header-container {
                height: 58px;
            }
            .nav-desktop {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .btn-login-text {
                display: none;
            }
            .header-actions {
                gap: 8px;
            }
            .btn-register {
                font-size: 0.8rem;
                padding: 7px 16px;
            }
            .article-banner {
                min-height: 40vh;
                margin-top: 58px;
            }
            .banner-content h1 {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .article-content-wrapper {
                padding: 20px 16px;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                left: 14px;
                bottom: 90px;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 1.2rem;
            }
            .btn-register {
                font-size: 0.75rem;
                padding: 6px 13px;
            }
            .banner-content h1 {
                font-size: 1.45rem;
            }
            .article-content {
                font-size: 0.95rem;
            }
        }

/* roulang page: category1 */
:root {
            --deep-jade: #0A2E1C;
            --forest: #123E25;
            --imperial-gold: #FFD700;
            --lucky-red: #D32F2F;
            --dark-bg: #051408;
            --text-white: #FFFFFF;
            --pale-mint: #D1F2EB;
            --text-muted: #8FA89B;
            --card-bg: #0F3322;
            --card-border: #1B4D32;
            --btn-hover-gold: #FFC107;
            --shadow-gold: 0 0 20px rgba(255, 215, 0, 0.15);
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.3);
            --border-radius-sm: 8px;
            --border-radius-md: 12px;
            --border-radius-lg: 16px;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.6;
            color: var(--text-white);
            background-color: var(--dark-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .site-header {
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--card-border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--imperial-gold);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo:hover {
            color: var(--btn-hover-gold);
        }

        .nav-desktop {
            display: flex;
            gap: 8px;
        }

        .nav-desktop a {
            color: var(--pale-mint);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 18px;
            border-radius: 20px;
            transition: all 0.25s ease;
        }

        .nav-desktop a:hover {
            color: var(--imperial-gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .nav-desktop a.active {
            color: var(--imperial-gold);
            background: rgba(255, 215, 0, 0.12);
            font-weight: 700;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login-text {
            background: none;
            border: none;
            color: var(--pale-mint);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            padding: 6px 12px;
            transition: color 0.2s;
        }

        .btn-login-text:hover {
            color: var(--imperial-gold);
        }

        .btn-register {
            background: linear-gradient(135deg, var(--lucky-red), #E53935);
            color: white;
            border: none;
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(211, 47, 47, 0.3);
        }

        .btn-register:hover {
            background: linear-gradient(135deg, #E53935, #F44336);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(211, 47, 47, 0.45);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--pale-mint);
            font-size: 1.5rem;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--deep-jade);
            border-top: 1px solid var(--card-border);
            padding: 16px 20px;
            gap: 8px;
        }

        .mobile-menu.active {
            display: flex;
        }

        .mobile-menu a {
            color: var(--pale-mint);
            font-weight: 600;
            padding: 12px 16px;
            border-radius: 8px;
            transition: background 0.2s;
        }

        .mobile-menu a:hover {
            background: rgba(255, 215, 0, 0.08);
            color: var(--imperial-gold);
        }

        .btn-primary {
            background: linear-gradient(135deg, #FFD700, #FFC107);
            color: #0A2E1C;
            border: none;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 28px;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.25);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #FFE55C, #FFD700);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.35);
            color: #0A2E1C;
        }

        .btn-outline-gold {
            background: transparent;
            border: 2px solid var(--imperial-gold);
            color: var(--imperial-gold);
            font-weight: 700;
            padding: 12px 28px;
            border-radius: 28px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-outline-gold:hover {
            background: var(--imperial-gold);
            color: #0A2E1C;
        }

        .badge-hot {
            background: var(--lucky-red);
            color: white;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 12px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: inline-block;
        }

        .badge-new {
            background: #FF6F00;
            color: white;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 12px;
            text-transform: uppercase;
        }

        .hero-section {
            background: linear-gradient(160deg, #0A2E1C 0%, #051408 50%, #0B1F13 100%);
            padding: 70px 0 60px;
            position: relative;
            overflow: hidden;
            border-bottom: 2px solid rgba(255, 215, 0, 0.15);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(255, 215, 0, 0.04) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-white);
        }

        .hero-title span {
            color: var(--imperial-gold);
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--pale-mint);
            margin-bottom: 30px;
            line-height: 1.7;
        }

        .hero-stats {
            display: flex;
            gap: 24px;
            margin-bottom: 30px;
        }

        .stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--imperial-gold);
        }

        .stat-item i {
            font-size: 1.2rem;
        }

        .hero-image-wrapper {
            position: relative;
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-gold);
            border: 2px solid rgba(255, 215, 0, 0.2);
        }

        .hero-image-wrapper img {
            width: 100%;
            display: block;
        }

        .group-buy-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--border-radius-lg);
            padding: 32px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .group-progress {
            display: flex;
            align-items: center;
            gap: 12px;
            margin: 16px 0 24px;
        }

        .progress-bar-custom {
            flex: 1;
            height: 10px;
            background: #1B4D32;
            border-radius: 5px;
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #FFD700, #FFA000);
            border-radius: 5px;
            width: 65%;
            animation: shimmer 2s infinite;
        }

        @keyframes shimmer {
            0% { opacity: 0.8; }
            50% { opacity: 1; }
            100% { opacity: 0.8; }
        }

        .group-count {
            font-weight: 700;
            color: var(--imperial-gold);
            white-space: nowrap;
        }

        .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-white);
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 40px;
        }

        .platform-section {
            padding: 70px 0;
        }

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

        .platform-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--border-radius-lg);
            padding: 36px 28px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }

        .platform-card:hover {
            border-color: var(--imperial-gold);
            transform: translateY(-4px);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.2);
        }

        .platform-icon {
            font-size: 3rem;
            color: var(--imperial-gold);
            margin-bottom: 16px;
        }

        .platform-card h3 {
            font-weight: 700;
            font-size: 1.4rem;
            margin-bottom: 10px;
        }

        .platform-card p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .steps-section {
            padding: 70px 0;
            background: var(--deep-jade);
        }

        .steps-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .step-item {
            background: var(--card-bg);
            border-radius: var(--border-radius-lg);
            padding: 30px 24px;
            border: 1px solid var(--card-border);
            position: relative;
            transition: all 0.3s ease;
        }

        .step-item:hover {
            border-color: var(--imperial-gold);
        }

        .step-number {
            width: 42px;
            height: 42px;
            background: var(--imperial-gold);
            color: #0A2E1C;
            font-weight: 900;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            margin-bottom: 16px;
        }

        .step-item h4 {
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

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

        .feature-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 20px;
            background: var(--card-bg);
            border-radius: var(--border-radius-md);
            border: 1px solid var(--card-border);
            transition: all 0.3s ease;
        }

        .feature-item:hover {
            border-color: var(--imperial-gold);
        }

        .feature-icon {
            font-size: 1.8rem;
            color: var(--imperial-gold);
            flex-shrink: 0;
        }

        .feature-text h4 {
            font-weight: 700;
            margin-bottom: 6px;
        }

        .feature-text p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin: 0;
        }

        .faq-section {
            padding: 70px 0;
            background: var(--dark-bg);
        }

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

        .accordion-custom .accordion-button {
            background: var(--card-bg);
            color: var(--text-white);
            font-weight: 700;
            box-shadow: none;
            border: none;
            padding: 18px 24px;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--forest);
            color: var(--imperial-gold);
        }

        .accordion-custom .accordion-button::after {
            filter: brightness(0) invert(1);
        }

        .accordion-custom .accordion-body {
            background: #0A2E1C;
            color: var(--pale-mint);
            padding: 20px 24px;
            line-height: 1.7;
        }

        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, #0A2E1C, #051408);
            text-align: center;
            border-top: 2px solid rgba(255, 215, 0, 0.15);
        }

        .site-footer {
            background: #041208;
            border-top: 1px solid var(--card-border);
            padding: 50px 0 30px;
            color: var(--pale-mint);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            color: var(--imperial-gold);
            font-weight: 700;
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            margin-bottom: 8px;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

        .footer-col a:hover {
            color: var(--imperial-gold);
        }

        .footer-bottom {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            border-top: 1px solid var(--card-border);
            padding-top: 20px;
        }

        .footer-badges {
            display: flex;
            gap: 20px;
            justify-content: center;
            margin-top: 12px;
            flex-wrap: wrap;
        }

        .footer-badges span {
            display: flex;
            align-items: center;
            gap: 4px;
            color: var(--imperial-gold);
            font-weight: 600;
            font-size: 0.8rem;
        }

        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 999;
            width: 54px;
            height: 54px;
            background: radial-gradient(circle, #1B4D32, #0A2E1C);
            border: 2px solid var(--imperial-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            transition: all 0.3s ease;
            animation: float 3s ease-in-out infinite;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
        }

        .fab-left i {
            font-size: 1.6rem;
            color: var(--imperial-gold);
        }

        .fab-left .badge-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: var(--lucky-red);
            border-radius: 50%;
            animation: blink 1.5s infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .platform-grid {
                grid-template-columns: 1fr 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .header-actions .btn-login-text {
                display: inline-block;
            }
            .header-actions .btn-register {
                display: inline-block;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .platform-grid {
                grid-template-columns: 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .fab-left {
                bottom: 80px;
                left: 14px;
                width: 48px;
                height: 48px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .header-container {
                padding: 10px 14px;
            }
            .logo {
                font-size: 1.2rem;
            }
            .btn-primary, .btn-outline-gold {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .platform-card {
                padding: 24px 16px;
            }
            .step-item {
                padding: 20px 16px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A1A1F;
            --bg-secondary: #0E2328;
            --bg-card: #132C33;
            --accent-teal: #00B4D8;
            --accent-coral: #FF6B6B;
            --accent-gold: #FFD166;
            --text-primary: #F0F6FC;
            --text-secondary: #B8C9D4;
            --text-muted: #6B8A9A;
            --border-subtle: rgba(0, 180, 216, 0.15);
            --border-glow: rgba(0, 180, 216, 0.4);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 25px rgba(0, 180, 216, 0.3);
            --shadow-coral: 0 0 18px rgba(255, 107, 107, 0.25);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --transition-base: all 0.3s ease;
            --font-heading: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        body {
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.65;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        ul {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ---- HEADER ---- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(10, 26, 31, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }

        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 22px;
            height: 66px;
        }

        .logo {
            font-family: var(--font-heading);
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--accent-teal);
            letter-spacing: 0.3px;
            white-space: nowrap;
            text-shadow: 0 0 10px rgba(0, 180, 216, 0.35);
            transition: var(--transition-base);
        }

        .logo:hover {
            color: #33CCF0;
            text-shadow: 0 0 18px rgba(0, 180, 216, 0.55);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 2.2rem;
        }

        .nav-desktop a {
            position: relative;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 0;
            letter-spacing: 0.2px;
            transition: var(--transition-base);
        }

        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-teal);
            border-radius: 1px;
            transition: width 0.28s ease;
        }

        .nav-desktop a:hover,
        .nav-desktop a.active {
            color: var(--text-primary);
        }

        .nav-desktop a:hover::after,
        .nav-desktop a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .btn-login-text {
            background: none;
            border: none;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 0.93rem;
            padding: 8px 12px;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-login-text:hover {
            color: var(--accent-teal);
        }

        .btn-register {
            background: linear-gradient(135deg, #00B4D8 0%, #0077B6 100%);
            color: #fff;
            border: none;
            padding: 9px 22px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.93rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 3px 14px rgba(0, 180, 216, 0.35);
        }

        .btn-register:hover {
            background: linear-gradient(135deg, #00C8EE 0%, #0085D0 100%);
            box-shadow: 0 5px 22px rgba(0, 180, 216, 0.5);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            font-size: 1.3rem;
            padding: 6px 10px;
            border-radius: 6px;
            cursor: pointer;
        }

        /* ---- HERO BANNER ---- */
        .page-hero {
            background: linear-gradient(180deg, #0C2026 0%, #0A1A1F 100%);
            border-bottom: 1px solid var(--border-subtle);
            padding: 48px 0 42px;
            text-align: left;
        }

        .page-hero .hero-content {
            display: flex;
            gap: 36px;
            align-items: center;
        }

        .page-hero .hero-text {
            flex: 1;
        }

        .page-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.3rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .page-hero .hero-subtitle {
            font-size: 1.08rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 22px;
            max-width: 620px;
        }

        .page-hero .hero-image {
            flex: 0 0 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-glow);
        }

        .page-hero .hero-image img {
            width: 100%;
            height: auto;
        }

        .hero-meta-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 180, 216, 0.12);
            border: 1px solid rgba(0, 180, 216, 0.25);
            color: var(--accent-teal);
            padding: 7px 15px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        /* ---- SECTION COMMON ---- */
        .section-padding {
            padding: 60px 0;
        }

        .section-header {
            margin-bottom: 38px;
            text-align: left;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 650px;
        }

        /* ---- STRATEGY CARDS (asymmetric grid) ---- */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            transition: var(--transition-base);
            border-left: 4px solid transparent;
        }

        .guide-card:hover {
            border-color: var(--border-glow);
            border-left-color: var(--accent-teal);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }

        .guide-card .card-icon {
            width: 48px;
            height: 48px;
            background: rgba(0, 180, 216, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-teal);
            margin-bottom: 16px;
        }

        .guide-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .guide-card p {
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ---- STEP-BY-STEP FLOW ---- */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .step-item {
            display: flex;
            gap: 22px;
            align-items: flex-start;
        }

        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, #00B4D8 0%, #0077B6 100%);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 3px 12px rgba(0, 180, 216, 0.4);
        }

        .step-body h4 {
            font-weight: 600;
            font-size: 1.08rem;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .step-body p {
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ---- WEAPON TABLE ---- */
        .weapon-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            background: var(--bg-card);
        }

        .weapon-table {
            width: 100%;
            border-collapse: collapse;
        }

        .weapon-table th {
            background: rgba(0, 180, 216, 0.08);
            color: var(--accent-teal);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 14px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border-subtle);
        }

        .weapon-table td {
            padding: 13px 16px;
            font-size: 0.93rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(0, 180, 216, 0.08);
        }

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

        .weapon-table .weapon-name {
            font-weight: 600;
            color: var(--text-primary);
        }

        .tag-recommend {
            display: inline-block;
            background: rgba(255, 107, 107, 0.15);
            color: var(--accent-coral);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
        }

        /* ---- BOSS HUNT CARDS ---- */
        .boss-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }

        .boss-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .boss-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }

        .boss-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .boss-card .boss-info {
            padding: 18px 20px;
        }

        .boss-card h4 {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .boss-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

        /* ---- FAQ ---- */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition-base);
        }

        .faq-question:hover {
            background: rgba(0, 180, 216, 0.05);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open .faq-question {
            color: var(--accent-teal);
        }

        .faq-question i {
            transition: transform 0.3s ease;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent-teal);
        }

        /* ---- CTA ---- */
        .cta-section {
            background: linear-gradient(135deg, #0E2D35 0%, #0C2026 100%);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 46px 40px;
            text-align: left;
            display: flex;
            gap: 32px;
            align-items: center;
            flex-wrap: wrap;
        }

        .cta-section .cta-text {
            flex: 1;
            min-width: 240px;
        }

        .cta-section h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .cta-section p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 18px;
        }

        .cta-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, #FF6B6B 0%, #E04949 100%);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 26px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            box-shadow: var(--shadow-coral);
            transition: var(--transition-base);
        }

        .btn-primary-glow:hover {
            box-shadow: 0 5px 28px rgba(255, 107, 107, 0.45);
            transform: translateY(-1px);
        }

        .btn-outline-glow {
            background: transparent;
            border: 2px solid var(--accent-teal);
            color: var(--accent-teal);
            padding: 11px 26px;
            border-radius: 26px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-outline-glow:hover {
            background: rgba(0, 180, 216, 0.1);
            box-shadow: var(--shadow-glow);
        }

        /* ---- FOOTER ---- */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
            margin-top: 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--accent-teal);
        }

        .footer-bottom {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-subtle);
            padding-top: 22px;
        }

        .footer-badges {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 12px;
        }

        .footer-badges span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ---- FAB ---- */
        .floating-fab {
            position: fixed;
            left: 18px;
            bottom: 90px;
            z-index: 1050;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: rgba(10, 26, 31, 0.75);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 18px rgba(0, 180, 216, 0.45);
            color: var(--accent-teal);
            font-size: 1.3rem;
            animation: floatBreath 3s ease-in-out infinite;
        }

        .floating-fab::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, #00F0FF, #FF6B6B);
            z-index: -1;
            opacity: 0.5;
        }

        .floating-fab:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.65);
            animation: none;
        }

        @keyframes floatBreath {
            0%, 100% { opacity: 0.65; transform: translateY(0); }
            50% { opacity: 0.9; transform: translateY(-5px); }
        }

        /* ---- RESPONSIVE ---- */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .boss-grid {
                grid-template-columns: 1fr 1fr;
            }
            .page-hero .hero-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .page-hero .hero-image {
                flex: 0 0 auto;
                width: 100%;
                max-width: 380px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .header-actions .btn-login-text,
            .header-actions .btn-register {
                font-size: 0.82rem;
                padding: 7px 14px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .boss-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .cta-section {
                flex-direction: column;
                text-align: left;
                padding: 30px 24px;
            }
            .weapon-table-wrapper {
                font-size: 0.78rem;
            }
        }

        @media (max-width: 520px) {
            .header-container {
                padding: 0 14px;
                height: 58px;
            }
            .logo {
                font-size: 1.3rem;
            }
            .page-hero {
                padding: 32px 0 28px;
            }
            .page-hero h1 {
                font-size: 1.45rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .steps-list .step-item {
                flex-direction: column;
                gap: 12px;
            }
        }