/* roulang page: index */
:root {
    --bg-primary: #070A11;
    --bg-secondary: #0D1320;
    --bg-card: #161E2E;
    --bg-card-hover: #1C263A;
    --border-color: #22304A;
    --brand-primary: #7C5CFC;
    --brand-glow: rgba(124, 92, 252, 0.35);
    --neon-cyan: #00E5FF;
    --neon-pink: #FF3DA6;
    --success-green: #00E2A1;
    --warning-yellow: #FFC247;
    --error-red: #FF5470;
    --text-primary: #F2F6FC;
    --text-secondary: #9AA9C0;
    --text-weak: #6B7A93;
    --radius-card: 16px;
    --radius-btn: 999px;
    --radius-input: 12px;
    --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
    --shadow-neon: 0 0 0 1px rgba(124, 92, 252, 0.5), 0 12px 40px rgba(124, 92, 252, 0.25);
    --section-space: 96px;
    --container-width: 1200px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    font-size: 16px;
}
body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img {
    max-width: 100%;
    display: block;
    border: 0;
}
a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover,
a:focus {
    outline: none;
    color: var(--neon-cyan);
}
button {
    font-family: inherit;
    border: none;
    cursor: pointer;
    background: none;
    color: inherit;
    transition: all 0.3s ease;
}
input,
textarea {
    font-family: inherit;
    border: none;
    outline: none;
}
ul,
ol {
    list-style: none;
}
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-btn);
    background: linear-gradient(135deg, #7C5CFC, #00E5FF);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 20px rgba(124, 92, 252, 0.3);
    border: none;
    transition: all 0.3s ease;
    text-decoration: none;
}
.btn-primary:hover {
    filter: brightness(1.15);
    box-shadow: 0 0 24px rgba(124, 92, 252, 0.55), 0 0 60px rgba(0, 229, 255, 0.2);
    color: #fff;
    transform: translateY(-2px);
}
.btn-primary:active {
    transform: scale(0.97);
}
.btn-primary:focus-visible {
    outline: 2px solid var(--neon-cyan);
    outline-offset: 3px;
}
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 12px;
    background: transparent;
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
}
.btn-secondary:hover {
    background: rgba(0, 229, 255, 0.1);
    color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
    transform: translateY(-2px);
}
.btn-secondary:active {
    transform: scale(0.97);
}
.btn-secondary:focus-visible {
    outline: 2px solid var(--neon-cyan);
    outline-offset: 3px;
}
/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(7, 10, 17, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: box-shadow 0.3s ease;
}
.site-header::after {
    content: '';
    display: block;
    height: 2px;
    background: linear-gradient(90deg, #7C5CFC, #00E5FF);
    opacity: 0.6;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: 0.02em;
    gap: 2px;
    white-space: nowrap;
}
.logo .logo-accent {
    background: linear-gradient(135deg, #7C5CFC, #00E5FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.logo-divider {
    color: var(--text-weak);
    margin: 0 4px;
    font-weight: 400;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-link {
    display: inline-block;
    padding: 10px 16px;
    font-size: 15px;
    color: var(--text-secondary);
    position: relative;
    border-radius: 8px;
    transition: all 0.3s ease;
}
.nav-link::after {
    content: '';
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 2px;
    height: 2px;
    background: linear-gradient(90deg, #7C5CFC, #00E5FF);
    border-radius: 2px;
    opacity: 0;
    transform: scaleX(0.5);
    transition: all 0.3s ease;
}
.nav-link:hover {
    color: var(--text-primary);
}
.nav-link:hover::after {
    opacity: 0.7;
    transform: scaleX(1);
}
.nav-link.active {
    color: var(--neon-cyan);
    background: rgba(124, 92, 252, 0.12);
    font-weight: 600;
}
.nav-link.active::after {
    opacity: 1;
    transform: scaleX(1);
}
.header-cta {
    margin-left: auto;
    padding-left: 20px;
}
.header-cta .btn-primary {
    padding: 10px 22px;
    font-size: 14px;
}
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    cursor: pointer;
    z-index: 1101;
}
.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}
.mobile-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
.mobile-drawer {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #0A0E17;
    z-index: 1100;
    padding: 90px 32px 40px;
    flex-direction: column;
    gap: 12px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.mobile-drawer.open {
    opacity: 1;
    visibility: visible;
    display: flex;
}
.mobile-drawer a {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    padding: 12px 0 12px 20px;
    border-left: 4px solid transparent;
    transition: all 0.3s ease;
}
.mobile-drawer a.active {
    color: var(--neon-cyan);
    border-left-color: var(--neon-cyan);
    background: rgba(0, 229, 255, 0.06);
}
.mobile-drawer a:hover {
    color: var(--neon-cyan);
}
@media (max-width: 1023px) {
    .nav-menu {
        display: none;
    }
    .mobile-toggle {
        display: flex;
    }
    .header-cta {
        display: none;
    }
}
/* Hero */
.hero {
    position: relative;
    padding: 140px 0 100px;
    background: linear-gradient(rgba(7, 10, 17, 0.92), rgba(7, 10, 17, 0.85)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 70% 20%, rgba(124, 92, 252, 0.28), transparent 55%);
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 15% 80%, rgba(0, 229, 255, 0.1), transparent 60%);
    pointer-events: none;
}
.hero-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}
.hero-content {
    flex: 1;
    max-width: 540px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(124, 92, 252, 0.15);
    border: 1px solid rgba(124, 92, 252, 0.4);
    border-radius: 999px;
    font-size: 13px;
    color: var(--neon-cyan);
    font-weight: 500;
    margin-bottom: 28px;
}
.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--neon-pink);
    box-shadow: 0 0 12px var(--neon-pink);
    animation: pulse-dot 1.5s infinite;
}
@keyframes pulse-dot {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.3);
    }
}
.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: 0.01em;
    background: linear-gradient(120deg, #F2F6FC 30%, #7C5CFC 70%, #00E5FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 36px;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}
.hero-stats {
    display: flex;
    gap: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}
.stat-item {
    display: flex;
    flex-direction: column;
}
.stat-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    background: linear-gradient(135deg, #7C5CFC, #00E5FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label {
    font-size: 12px;
    color: var(--text-weak);
    margin-top: 4px;
}
.hero-phone {
    flex-shrink: 0;
    position: relative;
    margin-right: 40px;
}
.phone-card {
    width: 300px;
    height: 580px;
    border-radius: 36px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(124, 92, 252, 0.15);
}
.phone-screen {
    position: absolute;
    inset: 0;
    overflow: hidden;
}
.phone-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.phone-screen::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(7, 10, 17, 0.85) 0%, transparent 40%);
}
.phone-overlay {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 20px;
    z-index: 2;
}
.phone-title {
    display: block;
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    line-height: 1.4;
}
.phone-play-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(124, 92, 252, 0.8);
    border: 1px solid rgba(0, 229, 255, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
    transition: all 0.3s ease;
}
.phone-play-btn:hover {
    background: var(--brand-primary);
    box-shadow: 0 0 20px rgba(124, 92, 252, 0.5);
    transform: scale(1.08);
}
.live-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(7, 10, 17, 0.7);
    border: 1px solid rgba(255, 61, 166, 0.5);
    border-radius: 999px;
    font-size: 12px;
    color: #fff;
}
.live-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--neon-pink);
    box-shadow: 0 0 8px var(--neon-pink);
    animation: pulse-dot 1.5s infinite;
}
.phone-notch {
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 20px;
    background: #000;
    border-radius: 12px;
    z-index: 4;
}
@media (max-width: 1023px) {
    .phone-card {
        width: 260px;
        height: 520px;
    }
    .hero-inner {
        gap: 30px;
    }
    .hero-title {
        font-size: 40px;
    }
}
@media (max-width: 768px) {
    .hero {
        padding: 110px 0 70px;
    }
    .hero-inner {
        flex-direction: column;
        text-align: center;
    }
    .hero-content {
        max-width: 100%;
    }
    .hero-title {
        font-size: 32px;
    }
    .hero-subtitle {
        font-size: 15px;
    }
    .hero-actions {
        justify-content: center;
    }
    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: 20px;
    }
    .hero-phone {
        margin: 30px 0 0;
    }
    .phone-card {
        width: 220px;
        height: 440px;
        border-radius: 28px;
        margin: 0 auto;
    }
    .phone-play-btn {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }
}
/* Section common */
.section {
    padding: var(--section-space) 0;
    position: relative;
}
.section-header {
    margin-bottom: 48px;
    text-align: center;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}
.section-tag {
    display: inline-block;
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--neon-cyan);
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: 999px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.section-title {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: 0.01em;
}
.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}
@media (max-width: 768px) {
    .section {
        --section-space: 64px;
    }
    .section-title {
        font-size: 24px;
    }
    .section-subtitle {
        font-size: 15px;
    }
}
/* Video Cards */
.video-section {
    background: var(--bg-secondary);
}
.video-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 10px 4px 24px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}
.video-scroll::-webkit-scrollbar {
    height: 6px;
}
.video-scroll::-webkit-scrollbar-track {
    background: rgba(34, 48, 74, 0.4);
    border-radius: 10px;
}
.video-scroll::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, #7C5CFC, #00E5FF);
    border-radius: 10px;
}
.video-card {
    flex-shrink: 0;
    width: 260px;
    scroll-snap-align: start;
    background: var(--bg-card);
    border-radius: var(--radius-card);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    display: block;
}
.video-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-neon);
    border-color: transparent;
}
.video-thumb {
    position: relative;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    background: #0D1320;
}
.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img {
    transform: scale(1.06);
}
.video-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(7, 10, 17, 0.6), transparent 40%);
}
.video-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
    padding: 4px 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--neon-cyan);
    background: rgba(7, 10, 17, 0.75);
    border: 1px solid rgba(0, 229, 255, 0.35);
    border-radius: 6px;
}
.video-hot {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 2;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    color: var(--warning-yellow);
    background: rgba(7, 10, 17, 0.75);
    border: 1px solid rgba(255, 194, 71, 0.4);
    border-radius: 6px;
}
.video-duration {
    position: absolute;
    right: 12px;
    bottom: 12px;
    z-index: 2;
    padding: 3px 8px;
    font-size: 11px;
    color: #fff;
    background: rgba(7, 10, 17, 0.75);
    border-radius: 6px;
}
.video-play {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    z-index: 2;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(124, 92, 252, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: #fff;
    border: 1px solid rgba(0, 229, 255, 0.5);
    opacity: 0;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(124, 92, 252, 0.3);
}
.video-card:hover .video-play {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}
.video-card-body {
    padding: 16px 16px 18px;
}
.video-card h3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}
.video-card:hover h3 {
    color: var(--neon-cyan);
}
.video-views {
    font-size: 12px;
    color: var(--text-weak);
}
/* News CMS */
.news-section {
    background: var(--bg-primary);
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.news-feature {
    grid-column: span 2;
    display: flex;
    background: var(--bg-card);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
}
.news-feature:hover {
    box-shadow: var(--shadow-neon);
    transform: translateY(-4px);
    border-color: transparent;
}
.news-feature img {
    width: 46%;
    min-height: 260px;
    object-fit: cover;
    background: var(--bg-secondary);
}
.news-feature-body {
    flex: 1;
    padding: 28px 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.news-feature-body h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
    color: var(--text-primary);
}
.news-feature-body p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card {
    background: var(--bg-card);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-color);
    padding: 24px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    transform: translateY(-4px) translateX(2px);
    box-shadow: var(--shadow-neon);
    border-color: transparent;
}
.news-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}
.category-badge {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--neon-cyan);
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid rgba(0, 229, 255, 0.25);
    border-radius: 6px;
    margin-bottom: 14px;
    align-self: flex-start;
}
.category-badge.purple {
    color: var(--brand-primary);
    border-color: rgba(124, 92, 252, 0.4);
    background: rgba(124, 92, 252, 0.1);
}
.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}
.news-meta time {
    font-size: 12px;
    color: var(--text-weak);
}
.news-meta a {
    font-size: 13px;
    font-weight: 600;
    color: var(--neon-cyan);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.news-meta a::after {
    content: '→';
    transition: transform 0.3s ease;
}
.news-meta a:hover::after {
    transform: translateX(4px);
}
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-card);
    border: 1px dashed var(--border-color);
}
.empty-state .empty-icon {
    width: 96px;
    height: 96px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.15), rgba(0, 229, 255, 0.1));
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--text-weak);
}
.empty-state p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}
.empty-state .btn-secondary {
    padding: 10px 28px;
    font-size: 14px;
}
@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
    .news-feature {
        grid-column: span 1;
        flex-direction: column;
    }
    .news-feature img {
        width: 100%;
        min-height: 180px;
    }
    .news-feature-body {
        padding: 20px;
    }
    .news-feature-body h3 {
        font-size: 18px;
    }
}
/* Grass Cards */
.grass-section {
    background: var(--bg-secondary);
    overflow: hidden;
}
.grass-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 10px 4px 24px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}
.grass-scroll::-webkit-scrollbar {
    height: 6px;
}
.grass-scroll::-webkit-scrollbar-track {
    background: rgba(34, 48, 74, 0.4);
    border-radius: 10px;
}
.grass-scroll::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, #FF3DA6, #7C5CFC);
    border-radius: 10px;
}
.grass-card {
    flex-shrink: 0;
    width: 220px;
    scroll-snap-align: start;
    background: var(--bg-card);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}
.grass-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-neon);
    border-color: transparent;
}
.grass-thumb {
    height: 130px;
    overflow: hidden;
    position: relative;
    background: #0D1320;
}
.grass-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.grass-card:hover .grass-thumb img {
    transform: scale(1.05);
}
.grass-thumb .grass-tag {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #FF3DA6, #7C5CFC);
    border-radius: 999px;
    box-shadow: 0 4px 12px rgba(255, 61, 166, 0.3);
}
.grass-info {
    padding: 16px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.grass-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
    line-height: 1.3;
}
.grass-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 14px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.grass-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 0;
    border-radius: 999px;
    border: 1px solid rgba(124, 92, 252, 0.5);
    color: var(--brand-primary);
    font-size: 13px;
    font-weight: 600;
    background: transparent;
    transition: all 0.3s ease;
    width: 100%;
}
.grass-btn:hover {
    background: linear-gradient(135deg, #7C5CFC, #00E5FF);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 0 16px rgba(124, 92, 252, 0.4);
}
/* Comments */
.comments-section {
    background: var(--bg-primary);
    overflow: hidden;
    padding: calc(var(--section-space) + 20px) 0;
}
.comments-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(255, 194, 71, 0.08);
    border: 1px solid rgba(255, 194, 71, 0.25);
    border-radius: 999px;
    font-size: 12px;
    color: var(--warning-yellow);
    margin-bottom: 24px;
}
.marquee-wrapper {
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow: hidden;
}
.marquee-track {
    overflow: hidden;
    width: 100%;
}
.marquee-content {
    display: flex;
    gap: 16px;
    width: max-content;
    animation: marquee-scroll 40s linear infinite;
}
.marquee-track.reverse .marquee-content {
    animation-direction: reverse;
    animation-duration: 50s;
}
.marquee-track:hover .marquee-content {
    animation-play-state: paused;
}
@keyframes marquee-scroll {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-50%);
    }
}
.comment-card {
    flex-shrink: 0;
    width: 280px;
    min-height: 120px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 18px 20px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.comment-card:hover {
    border-color: rgba(124, 92, 252, 0.5);
    box-shadow: 0 0 20px rgba(124, 92, 252, 0.12);
}
.comment-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.comment-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #7C5CFC, #00E5FF);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.comment-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}
.comment-stars {
    display: flex;
    gap: 2px;
    color: var(--warning-yellow);
    font-size: 12px;
}
.comment-text {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    flex-grow: 1;
    margin-bottom: 16px;
}
.comment-time {
    font-size: 11px;
    color: var(--text-weak);
}
.comment-empty {
    flex-shrink: 0;
    width: 280px;
    min-height: 120px;
    background: rgba(22, 30, 46, 0.5);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    color: var(--text-weak);
}
@media (prefers-reduced-motion: reduce) {
    .marquee-content {
        animation: none !important;
    }
}
/* CTA */
.cta-section {
    padding: 0 0 var(--section-space);
}
.cta-card {
    position: relative;
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.15), rgba(0, 229, 255, 0.08));
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 64px 48px;
    text-align: center;
    overflow: hidden;
}
.cta-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #7C5CFC, #00E5FF);
}
.cta-card::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(124, 92, 252, 0.15), transparent 70%);
    pointer-events: none;
}
.cta-card > * {
    position: relative;
    z-index: 1;
}
.cta-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, #7C5CFC, #00E5FF);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 0 30px rgba(124, 92, 252, 0.4);
}
.cta-card h2 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--text-primary);
}
.cta-card p {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto 32px;
    line-height: 1.7;
}
@media (max-width: 768px) {
    .cta-card {
        padding: 44px 24px;
    }
    .cta-card h2 {
        font-size: 22px;
    }
    .cta-card p {
        font-size: 15px;
    }
}
/* FAQ */
.faq-section {
    background: var(--bg-secondary);
}
.faq-list {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: all 0.3s ease;
}
.faq-item:hover {
    border-color: rgba(124, 92, 252, 0.4);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    text-align: left;
    gap: 20px;
}
.faq-question:hover {
    color: var(--neon-cyan);
}
.faq-question:focus-visible {
    outline: 2px solid var(--neon-cyan);
    outline-offset: -2px;
}
.faq-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(124, 92, 252, 0.15);
    border: 1px solid rgba(124, 92, 252, 0.4);
    position: relative;
    flex-shrink: 0;
    transition: all 0.3s ease;
}
.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--brand-primary);
    transition: all 0.3s ease;
}
.faq-icon::before {
    width: 10px;
    height: 2px;
}
.faq-icon::after {
    width: 2px;
    height: 10px;
}
.faq-item.active .faq-icon {
    background: rgba(0, 229, 255, 0.15);
    border-color: var(--neon-cyan);
}
.faq-item.active .faq-icon::before,
.faq-item.active .faq-icon::after {
    background: var(--neon-cyan);
}
.faq-item.active .faq-icon::after {
    transform: translate(-50%, -50%) scaleY(0);
}
.faq-item.active .faq-question {
    color: var(--neon-cyan);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.faq-answer-inner {
    padding: 0 24px 22px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}
/* Footer */
.site-footer {
    background: #04070D;
    border-top: 2px solid transparent;
    border-image: linear-gradient(90deg, #7C5CFC, #00E5FF) 1;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding: 64px 0 48px;
}
.footer-brand p {
    font-size: 14px;
    color: var(--text-weak);
    margin-top: 16px;
    max-width: 300px;
    line-height: 1.7;
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 18px;
}
.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-col ul a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}
.footer-col ul a:hover {
    color: var(--neon-cyan);
    padding-left: 4px;
}
.footer-bottom {
    border-top: 1px solid rgba(34, 48, 74, 0.6);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom p {
    font-size: 13px;
    color: var(--text-weak);
}
.footer-bottom .icp {
    font-size: 13px;
    color: var(--text-weak);
}
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
        padding: 48px 0 32px;
    }
    .footer-brand {
        grid-column: span 2;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}
/* Sticky Mobile Bar */
.sticky-bar {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 229, 255, 0.3);
    padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}
.sticky-bar.show {
    display: flex;
    transform: translateY(0);
}
.sticky-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}
.sticky-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, #7C5CFC, #00E5FF);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}
.sticky-info p {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sticky-bar .btn-primary {
    padding: 10px 20px;
    font-size: 14px;
    white-space: nowrap;
    flex-shrink: 0;
}
@media (max-width: 768px) {
    .sticky-bar.show {
        display: flex;
    }
}
/* Scroll to top */
.scroll-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 998;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-card);
}
.scroll-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.scroll-top:hover {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
}
@media (max-width: 768px) {
    .scroll-top {
        bottom: 80px;
        right: 16px;
    }
}
/* A11y */
:focus-visible {
    outline: 2px solid var(--neon-cyan);
    outline-offset: 2px;
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* roulang page: category1 */
:root {
            --bg-deep: #070A11;
            --bg-dark: #0D1320;
            --bg-card: #161E2E;
            --bg-card-light: #1C263A;
            --border-color: #22304A;
            --primary: #7C5CFC;
            --primary-glow: rgba(124, 92, 252, 0.35);
            --cyan: #00E5FF;
            --pink: #FF3DA6;
            --success: #00E2A1;
            --warning: #FFC247;
            --error: #FF5470;
            --text-main: #F2F6FC;
            --text-sub: #9AA9C0;
            --text-dim: #6B7A93;
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-btn-sm: 12px;
            --radius-tag: 6px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 0 0 1px rgba(124, 92, 252, 0.5), 0 12px 40px rgba(124, 92, 252, 0.25);
            --section-space: 96px;
            --main-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--main-font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg-deep);
            background-image: radial-gradient(ellipse at 80% 0%, rgba(124, 92, 252, 0.12), transparent 50%), radial-gradient(ellipse at 10% 100%, rgba(0, 229, 255, 0.06), transparent 40%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            :root {
                --section-space: 56px;
            }
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 10, 17, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid transparent;
            background-image: linear-gradient(rgba(7, 10, 17, 0.92), rgba(7, 10, 17, 0.92)), linear-gradient(90deg, var(--primary), var(--cyan));
            background-origin: padding-box, border-box;
            background-clip: padding-box, border-box;
            height: 72px;
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }

        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .logo-accent {
            color: var(--cyan);
            position: relative;
            margin-left: 4px;
        }

        .logo::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 12px var(--primary-glow);
            margin-right: 8px;
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: 32px;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: var(--radius-tag);
            position: relative;
            transition: all 0.3s ease;
            line-height: 1.4;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0.5);
            transition: all 0.3s ease;
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(124, 92, 252, 0.08);
        }

        .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--text-main);
            background: rgba(124, 92, 252, 0.12);
            box-shadow: inset 0 0 0 1px rgba(124, 92, 252, 0.3);
        }

        .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 24px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 4px 20px rgba(124, 92, 252, 0.25);
        }

        .header-cta:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 24px var(--primary-glow), 0 4px 20px rgba(124, 92, 252, 0.35);
            transform: translateY(-1px);
        }

        .header-cta:active {
            transform: scale(0.97);
        }

        .header-cta:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 2px;
        }

        .burger-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(124, 92, 252, 0.1);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .burger-btn:hover {
            background: rgba(124, 92, 252, 0.2);
            border-color: var(--primary);
        }

        .burger-btn span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-main);
            margin: 2.5px 0;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            height: 100vh;
            background: #0A0E17;
            z-index: 2000;
            padding: 72px 24px 32px;
            transition: right 0.35s ease;
            display: none;
            flex-direction: column;
        }

        .mobile-drawer.open {
            right: 0;
        }

        .drawer-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(124, 92, 252, 0.1);
            border: 1px solid var(--border-color);
            color: var(--text-main);
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .drawer-close:hover {
            background: rgba(255, 84, 112, 0.2);
            border-color: var(--error);
        }

        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 16px;
        }

        .drawer-nav .nav-link {
            font-size: 28px;
            padding: 10px 14px;
            border-radius: 12px;
            color: var(--text-sub);
        }

        .drawer-nav .nav-link.active {
            color: var(--cyan);
            background: transparent;
            box-shadow: none;
            position: relative;
            padding-left: 20px;
        }

        .drawer-nav .nav-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--cyan));
        }

        .drawer-nav .nav-link.active::after {
            display: none;
        }

        .drawer-cta {
            margin-top: 32px;
            width: 100%;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            text-align: center;
            transition: all 0.3s ease;
        }

        .drawer-cta:hover {
            box-shadow: 0 0 24px var(--primary-glow);
        }

        @media (max-width: 1024px) {
            .nav-menu {
                gap: 2px;
                margin-left: 12px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 14px;
            }
            .header-cta {
                padding: 8px 18px;
                font-size: 13px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }
            .nav-menu,
            .header-cta {
                display: none;
            }
            .burger-btn {
                display: flex;
            }
            .mobile-drawer {
                display: flex;
            }
        }

        /* ===== Page Hero (Category 1) ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 96px;
            background: linear-gradient(180deg, rgba(13, 19, 32, 0.6) 0%, var(--bg-deep) 100%);
            border-bottom: 1px solid var(--border-color);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 20%, rgba(124, 92, 252, 0.25), transparent 55%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 824px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--cyan);
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.25);
            padding: 4px 14px;
            border-radius: var(--radius-btn);
            margin-bottom: 24px;
        }

        .hero-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--pink);
            box-shadow: 0 0 10px var(--pink);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(0.8);
            }
        }

        .page-hero h1 {
            font-size: 56px;
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
        }

        .page-hero h1 .gradient-text {
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(124, 92, 252, 0.3);
            cursor: pointer;
        }

        .btn-primary:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 30px rgba(124, 92, 252, 0.5);
            transform: translateY(-2px);
        }

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

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-btn-sm);
            border: 1px solid var(--cyan);
            color: var(--cyan);
            font-size: 15px;
            font-weight: 500;
            background: transparent;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.1);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
        }

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

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

        @media (max-width: 768px) {
            .page-hero {
                padding: 56px 0 64px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            padding: 16px 0;
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border-color);
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-dim);
            flex-wrap: wrap;
        }

        .breadcrumb-list a {
            color: var(--text-sub);
            transition: color 0.3s ease;
        }

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

        .breadcrumb-list .sep {
            color: var(--text-dim);
        }

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

        /* ===== Section Base ===== */
        .section {
            padding: var(--section-space) 0;
            position: relative;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 14px;
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            border-radius: 2px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.01em;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 40px;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 15px;
            }
        }

        /* ===== Step Guide Section ===== */
        .guide-section {
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border-color);
        }

        .guide-layout {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 56px;
            align-items: start;
        }

        .steps-column {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .step-item {
            display: flex;
            gap: 20px;
            padding: 24px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .step-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--cyan));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .step-item:hover {
            border-color: rgba(124, 92, 252, 0.4);
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }

        .step-item:hover::before {
            opacity: 1;
        }

        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(124, 92, 252, 0.2), rgba(0, 229, 255, 0.1));
            border: 1px solid rgba(124, 92, 252, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--cyan);
        }

        .step-body {
            flex: 1;
        }

        .step-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .step-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .step-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 500;
            color: var(--cyan);
        }

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

        .step-link:hover .arrow-icon {
            transform: translateX(3px);
        }

        .arrow-icon {
            transition: transform 0.3s ease;
            font-size: 14px;
        }

        .screenshot-column {
            position: sticky;
            top: 96px;
        }

        .screen-frame {
            background: var(--bg-card);
            border-radius: 20px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .screen-frame::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(145deg, rgba(124, 92, 252, 0.12), transparent 50%);
            pointer-events: none;
            z-index: 1;
        }

        .screen-frame img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .screen-caption {
            padding: 16px 20px;
            background: var(--bg-card-light);
            border-top: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .screen-caption span {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
        }

        .live-dot {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--success);
        }

        .live-dot::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 8px var(--success);
            animation: pulse 2s infinite;
        }

        @media (max-width: 1024px) {
            .guide-layout {
                grid-template-columns: 1fr 300px;
                gap: 32px;
            }
            .screen-frame img {
                height: 300px;
            }
        }

        @media (max-width: 768px) {
            .guide-layout {
                grid-template-columns: 1fr;
            }
            .screenshot-column {
                position: static;
            }
            .step-item {
                padding: 18px 16px;
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
        }

        /* ===== Feature Strip ===== */
        .feature-strip {
            padding: 56px 0;
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border-color);
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-item {
            text-align: center;
            padding: 24px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .feature-item:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(124, 92, 252, 0.2), rgba(0, 229, 255, 0.08));
            border: 1px solid rgba(124, 92, 252, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }

        .feature-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .feature-item p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        /* ===== Entrance Link Section ===== */
        .entrance-section {
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border-color);
        }

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

        .entrance-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            padding: 32px 28px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            display: block;
        }

        .entrance-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .entrance-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(124, 92, 252, 0.3);
        }

        .entrance-card:hover::after {
            opacity: 1;
        }

        .entrance-card .icon-badge {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            box-shadow: 0 4px 20px rgba(124, 92, 252, 0.3);
        }

        .entrance-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .entrance-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .entrance-card .go-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--cyan);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .entrance-card:hover .go-link {
            color: var(--pink);
        }

        .entrance-card:hover .go-link .arrow-icon {
            transform: translateX(4px);
        }

        @media (max-width: 768px) {
            .entrance-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Flow Steps ===== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .flow-step-item {
            text-align: center;
            padding: 24px 16px;
            position: relative;
        }

        .flow-step-item::after {
            content: '';
            position: absolute;
            top: 48px;
            right: -12px;
            width: 24px;
            height: 1px;
            background: linear-gradient(90deg, var(--primary), transparent);
        }

        .flow-step-item:last-child::after {
            display: none;
        }

        .flow-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin: 0 auto 14px;
            box-shadow: 0 0 20px rgba(124, 92, 252, 0.35);
        }

        .flow-step-item h3 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .flow-step-item p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .flow-step-item:nth-child(2)::after {
                display: none;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border-color);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item.open {
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.06);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            cursor: pointer;
            text-align: left;
            transition: all 0.3s ease;
            background: transparent;
        }

        .faq-question:hover {
            color: var(--cyan);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: -2px;
            border-radius: var(--radius-card);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            border: 1px solid var(--border-color);
            color: var(--text-sub);
            transition: all 0.3s ease;
            margin-left: 16px;
        }

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

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--cyan);
            border-color: var(--cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer p {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(124, 92, 252, 0.2), transparent 70%);
        }

        .cta-card {
            position: relative;
            z-index: 2;
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
            background: var(--bg-card);
            border-radius: 28px;
            border: 1px solid var(--border-color);
            padding: 50px 48px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--cyan), var(--pink));
        }

        .cta-card h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .cta-card p {
            font-size: 16px;
            color: var(--text-sub);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-card {
                padding: 32px 20px;
                border-radius: 20px;
            }
            .cta-card h2 {
                font-size: 24px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-outline {
                width: 100%;
                max-width: 280px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #05070C;
            border-top: 1px solid var(--border-color);
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--cyan), var(--pink), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 48px;
            padding: 64px 0 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-dim);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 18px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-sub);
            transition: all 0.3s ease;
        }

        .footer-col ul a:hover {
            color: var(--cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(34, 48, 74, 0.6);
            padding: 20px 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dim);
        }

        .footer-bottom .icp {
            font-size: 13px;
            color: var(--text-dim);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 48px 0 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Page Specific Adjusts ===== */
        .tech-band {
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border-color);
        }

        .tech-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .tech-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .tech-item .tech-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(124, 92, 252, 0.12);
            border: 1px solid rgba(124, 92, 252, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .tech-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .tech-item p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .tech-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Section Margins ===== */
        .section+.section {
            border-top: 1px solid rgba(34, 48, 74, 0.4);
        }

/* roulang page: article */
:root {
    --bg-deep: #070A11;
    --bg-secondary: #0D1320;
    --card-bg: #161E2E;
    --card-highlight: #1C263A;
    --border-color: #22304A;
    --primary: #7C5CFC;
    --primary-glow: rgba(124, 92, 252, 0.35);
    --neon-cyan: #00E5FF;
    --neon-pink: #FF3DA6;
    --success: #00E2A1;
    --warning: #FFC247;
    --error: #FF5470;
    --text-main: #F2F6FC;
    --text-secondary: #9AA9C0;
    --text-muted: #6B7A93;
    --radius: 16px;
    --radius-sm: 12px;
    --shadow: 0 8px 30px rgba(0,0,0,0.35);
    --shadow-hover: 0 0 0 1px rgba(124,92,252,0.5), 0 12px 40px rgba(124,92,252,0.25);
    --section-space: 96px;
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg-deep);
    color: var(--text-main);
    line-height: 1.7;
    font-size: 16px;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--neon-cyan);
    outline-offset: 2px;
}

img {
    max-width: 100%;
    display: block;
    border-radius: var(--radius);
}

ul,
ol {
    list-style: none;
}

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

input,
textarea,
select {
    font-family: inherit;
}

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

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(7, 10, 17, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 0 rgba(124, 92, 252, 0.2), 0 8px 30px rgba(0,0,0,0.25);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    position: relative;
    display: inline-block;
    padding: 10px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 999px;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 4px;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--neon-cyan));
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--text-main);
}

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

.nav-link.active {
    color: var(--neon-cyan);
    background: rgba(0, 229, 255, 0.08);
    box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.15);
}

.nav-link.active::after {
    width: 70%;
}

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

.btn-login {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary), var(--neon-cyan));
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    border-radius: 999px;
    box-shadow: 0 4px 18px rgba(124, 92, 252, 0.3);
    transition: all 0.3s ease;
}

.btn-login:hover {
    box-shadow: 0 0 20px rgba(124, 92, 252, 0.6), 0 6px 24px rgba(0, 229, 255, 0.25);
    transform: translateY(-2px);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #0A0E17;
    z-index: 99;
    padding: 96px 32px 32px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu.open {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-nav-link {
    display: block;
    padding: 16px 20px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-secondary);
    border-radius: 12px;
    border-left: 3px solid transparent;
    transition: all 0.3s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--neon-cyan);
    background: rgba(0, 229, 255, 0.06);
    border-left-color: var(--neon-cyan);
}

.mobile-nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--primary), var(--neon-cyan));
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    border-radius: 999px;
}

/* ===== Breadcrumb ===== */
.breadcrumb-wrap {
    padding: 20px 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

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

.breadcrumb .sep {
    color: var(--border-color);
}

.breadcrumb .current {
    color: var(--text-main);
    max-width: 240px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== Article Hero ===== */
.article-hero {
    padding: 64px 0 48px;
    background:
        radial-gradient(ellipse at 80% 10%, rgba(124, 92, 252, 0.22), transparent 55%),
        radial-gradient(ellipse at 10% 90%, rgba(0, 229, 255, 0.08), transparent 40%),
        linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-deep) 100%);
    border-bottom: 1px solid var(--border-color);
}

.article-heading {
    max-width: 860px;
    margin: 0 auto;
}

.article-heading h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 0.01em;
    overflow-wrap: break-word;
    word-break: break-word;
    margin-bottom: 20px;
    background: linear-gradient(180deg, #fff, rgba(242, 246, 252, 0.85));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 14px;
    color: var(--text-muted);
}

.meta-badge {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(124, 92, 252, 0.15);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 999px;
    border: 1px solid rgba(124, 92, 252, 0.3);
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.meta-item::before {
    content: "";
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--border-color);
}

/* ===== Article Body ===== */
.article-body {
    padding: 48px 0 24px;
}

.article-content-wrap {
    max-width: 760px;
    margin: 0 auto;
}

.article-content {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

.article-content > * + * {
    margin-top: 24px;
}

.article-content h2 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-main);
    border-left: 4px solid var(--primary);
    padding-left: 16px;
    margin-top: 48px;
    margin-bottom: 16px;
    overflow-wrap: break-word;
}

.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.35;
    color: var(--text-main);
    margin-top: 32px;
    margin-bottom: 12px;
    overflow-wrap: break-word;
}

.article-content h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-main);
    margin-top: 28px;
    margin-bottom: 10px;
}

.article-content p {
    margin-bottom: 24px;
}

.article-content a {
    color: var(--neon-cyan);
    border-bottom: 1px solid rgba(0, 229, 255, 0.3);
}

.article-content a:hover {
    color: var(--neon-pink);
    border-bottom-color: var(--neon-pink);
}

.article-content ul,
.article-content ol {
    margin: 0 0 24px 20px;
}

.article-content ul {
    list-style: disc;
}

.article-content ol {
    list-style: decimal;
}

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

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

.article-content blockquote {
    border-left: 3px solid var(--neon-cyan);
    background: rgba(0, 229, 255, 0.05);
    padding: 20px 24px;
    border-radius: 0 12px 12px 0;
    color: var(--text-main);
    font-style: normal;
    margin: 32px 0;
}

.article-content blockquote p:last-child {
    margin-bottom: 0;
}

.article-content img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin: 32px 0;
}

.article-content figure {
    margin: 32px 0;
}

.article-content figcaption {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
    font-size: 14px;
    overflow-x: auto;
    display: block;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

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

.article-content th {
    background: var(--card-highlight);
    color: var(--text-main);
    font-weight: 600;
}

.article-content tr:last-child td {
    border-bottom: none;
}

.article-content code {
    background: var(--card-highlight);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--neon-cyan);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.article-content pre {
    background: #0A0E17;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    overflow-x: auto;
    margin: 32px 0;
    line-height: 1.6;
}

.article-content pre code {
    background: none;
    color: var(--text-main);
    padding: 0;
}

/* ===== Tags ===== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.tag:hover {
    color: var(--neon-cyan);
    border-color: rgba(0, 229, 255, 0.4);
    background: rgba(0, 229, 255, 0.04);
}

/* ===== Share ===== */
.share-area {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.share-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-right: 4px;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 18px;
    background: var(--card-highlight);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.share-btn:hover {
    color: var(--neon-cyan);
    border-color: rgba(0, 229, 255, 0.4);
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.1);
    transform: translateY(-2px);
}

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

/* ===== Post Nav ===== */
.post-nav-section {
    padding: 48px 0;
}

.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 860px;
    margin: 0 auto;
}

.post-nav-prev,
.post-nav-next {
    display: block;
    padding: 20px 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    transition: all 0.3s ease;
}

.post-nav-prev::before {
    content: "← 上一篇";
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.post-nav-next::before {
    content: "下一篇 →";
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.post-nav-next {
    text-align: right;
}

.post-nav-prev:hover,
.post-nav-next:hover {
    border-color: rgba(124, 92, 252, 0.5);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    color: var(--text-main);
}

/* ===== Related ===== */
.related-section {
    padding: 64px 0 80px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.related-section .section-title {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    letter-spacing: 0.02em;
}

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

.related-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s ease;
}

.related-card:hover {
    border-color: rgba(124, 92, 252, 0.5);
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
}

.related-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 0;
}

.related-body {
    padding: 20px;
}

.related-body h3 {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 10px;
    overflow-wrap: break-word;
    color: var(--text-main);
    transition: color 0.3s ease;
}

.related-card:hover .related-body h3 {
    color: var(--neon-cyan);
}

.related-body p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 14px;
}

.related-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

.related-meta .badge {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(124, 92, 252, 0.12);
    color: var(--primary);
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
}

.back-list {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    background: transparent;
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    font-size: 14px;
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(0, 229, 255, 0.08);
    box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
    transform: translateY(-2px);
}

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

/* ===== CTA ===== */
.cta-section {
    padding: 64px 0 96px;
}

.cta-card {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding: 56px 48px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.cta-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--neon-cyan));
}

.cta-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 100%, rgba(124, 92, 252, 0.2), transparent 60%),
        radial-gradient(ellipse at 0% 0%, rgba(0, 229, 255, 0.08), transparent 40%);
    pointer-events: none;
}

.cta-card > * {
    position: relative;
    z-index: 1;
}

.cta-card h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

.cta-card p {
    color: var(--text-secondary);
    font-size: 16px;
    max-width: 520px;
    margin: 0 auto 28px;
    line-height: 1.7;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    background: linear-gradient(135deg, var(--primary), var(--neon-cyan));
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    border-radius: 999px;
    min-width: 220px;
    box-shadow: 0 4px 20px rgba(124, 92, 252, 0.35);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    box-shadow: 0 0 24px rgba(124, 92, 252, 0.6), 0 6px 28px rgba(0, 229, 255, 0.25);
    transform: translateY(-2px);
}

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

/* ===== Not Found ===== */
.article-not-found {
    text-align: center;
    padding: 64px 24px;
}

.article-not-found .nf-icon {
    font-size: 72px;
    margin-bottom: 20px;
    opacity: 0.6;
}

.article-not-found h2 {
    font-size: 28px;
    margin-bottom: 12px;
}

.article-not-found p {
    color: var(--text-muted);
    margin-bottom: 28px;
}

/* ===== Footer ===== */
.site-footer {
    background: #050810;
    border-top: 2px solid transparent;
    border-image: linear-gradient(90deg, var(--primary), var(--neon-cyan)) 1;
    padding: 64px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.footer-brand .logo {
    font-size: 22px;
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
    max-width: 320px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 16px;
}

.footer-col ul {
    display: grid;
    gap: 10px;
}

.footer-col ul a {
    color: var(--text-muted);
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-col ul a:hover {
    color: var(--neon-cyan);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 24px;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 13px;
}

.footer-bottom .icp {
    color: var(--text-muted);
    font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }

    .header-actions .btn-login {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .article-hero {
        padding: 48px 0 32px;
    }

    .article-heading h1 {
        font-size: 28px;
        line-height: 1.3;
    }

    .article-meta {
        gap: 10px;
        font-size: 13px;
    }

    .article-content {
        font-size: 15px;
        line-height: 1.75;
    }

    .article-content h2 {
        font-size: 22px;
    }

    .article-content h3 {
        font-size: 18px;
    }

    .article-content table {
        font-size: 13px;
    }

    .post-nav {
        grid-template-columns: 1fr;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .related-card img {
        height: 200px;
    }

    .cta-section {
        padding: 48px 0 64px;
    }

    .cta-card {
        padding: 40px 20px;
    }

    .cta-card h2 {
        font-size: 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        justify-content: center;
        text-align: center;
    }
}

@media (max-width: 520px) {
    .article-heading h1 {
        font-size: 24px;
    }

    .article-heading h1 {
        font-size: 22px;
    }

    .related-body h3 {
        font-size: 16px;
    }

    .breadcrumb .current {
        max-width: 160px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* roulang page: category2 */
:root {
            --bg-deep: #070A11;
            --bg-dark: #0D1320;
            --bg-card: #161E2E;
            --bg-card-hover: #1C263A;
            --line: #22304A;
            --brand: #7C5CFC;
            --brand-glow: rgba(124, 92, 252, 0.35);
            --cyan: #00E5FF;
            --pink: #FF3DA6;
            --success: #00E2A1;
            --warn: #FFC247;
            --error: #FF5470;
            --text: #F2F6FC;
            --text-sec: #9AA9C0;
            --text-weak: #6B7A93;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 6px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 0 0 1px rgba(124, 92, 252, 0.5), 0 12px 40px rgba(124, 92, 252, 0.25);
            --section-space: 96px;
            --transition: 0.3s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-deep);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-space {
            padding: var(--section-space) 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.02em;
        }

        .section-head p {
            margin-top: 14px;
            color: var(--text-sec);
            font-size: 16px;
            line-height: 1.7;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 999px;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #7C5CFC, #00E5FF);
            color: #fff;
            border: none;
            box-shadow: 0 4px 20px rgba(124, 92, 252, 0.25);
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 16px rgba(124, 92, 252, 0.5), 0 0 32px rgba(0, 229, 255, 0.3);
            transform: translateY(-2px);
        }

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

        .btn-primary:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 3px;
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid var(--cyan);
            color: var(--cyan);
        }

        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
        }

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

        .btn-secondary:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 3px;
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
            border-radius: 999px;
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }

        .btn-header {
            padding: 8px 20px;
            font-size: 14px;
        }

        /* ---------- Header ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(7, 10, 17, 0.92);
            border-bottom: 1px solid rgba(124, 92, 252, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text);
            white-space: nowrap;
        }

        .logo-accent {
            color: var(--brand);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            position: relative;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sec);
            border-radius: var(--radius-md);
            transition: color var(--transition), background var(--transition);
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: linear-gradient(90deg, #7C5CFC, #00E5FF);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0.6);
            transition: opacity var(--transition), transform var(--transition);
        }

        .nav-link:hover {
            color: var(--text);
            background: rgba(124, 92, 252, 0.08);
        }

        .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--text);
            background: rgba(124, 92, 252, 0.14);
        }

        .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
        }

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        /* ---------- Hero ---------- */
        .gift-hero {
            position: relative;
            padding: 170px 0 100px;
            background: linear-gradient(135deg, rgba(7, 10, 17, 0.92), rgba(13, 19, 32, 0.94)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        }

        .gift-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 70% 20%, rgba(124, 92, 252, 0.28), transparent 55%);
            pointer-events: none;
        }

        .gift-hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 860px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(124, 92, 252, 0.15);
            border: 1px solid rgba(124, 92, 252, 0.35);
            color: var(--cyan);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 999px;
            margin-bottom: 28px;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: var(--pink);
            border-radius: 50%;
            animation: pulse-dot 1.6s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(0.8);
            }
        }

        .gift-hero h1 {
            font-size: 56px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: 0.02em;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #fff, #7C5CFC, #00E5FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-sub {
            font-size: 18px;
            color: var(--text-sec);
            line-height: 1.8;
            max-width: 640px;
            margin: 0 auto 36px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 52px;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .hero-stats .stat {
            text-align: center;
        }

        .hero-stats .stat strong {
            display: block;
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
        }

        .hero-stats .stat span {
            font-size: 13px;
            color: var(--text-weak);
        }

        /* ---------- Filter Tabs ---------- */
        .filter-tabs {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 48px;
        }

        .tab {
            padding: 9px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sec);
            background: var(--bg-card);
            border: 1px solid var(--line);
            transition: all var(--transition);
        }

        .tab:hover {
            color: var(--text);
            border-color: rgba(124, 92, 252, 0.5);
            background: rgba(124, 92, 252, 0.08);
        }

        .tab.active {
            color: #fff;
            border-color: transparent;
            background: linear-gradient(135deg, #7C5CFC, #00E5FF);
            box-shadow: 0 0 16px rgba(124, 92, 252, 0.3);
        }

        .tab:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 2px;
        }

        /* ---------- Gift Grid ---------- */
        .gift-section {
            padding: var(--section-space) 0;
            background: var(--bg-deep);
        }

        .gift-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .gift-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }

        .gift-card:nth-child(even) {
            margin-top: 52px;
        }

        .gift-card.hidden-card {
            display: none;
        }

        .gift-card:hover {
            transform: translateY(-6px);
            border-color: rgba(124, 92, 252, 0.6);
            box-shadow: var(--shadow-hover);
        }

        .gift-card:focus-within {
            outline: 2px solid var(--cyan);
            outline-offset: 2px;
        }

        .gift-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .gift-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

        .gift-card:hover .gift-cover img {
            transform: scale(1.04);
        }

        .gift-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(7, 10, 17, 0.7);
            color: var(--cyan);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(0, 229, 255, 0.3);
        }

        .gift-value {
            position: absolute;
            top: 14px;
            right: 14px;
            background: linear-gradient(135deg, var(--pink), #FF8CC8);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            box-shadow: 0 2px 12px rgba(255, 61, 166, 0.3);
        }

        .gift-info {
            padding: 22px 22px 24px;
        }

        .gift-info h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .gift-info p {
            font-size: 14px;
            color: var(--text-sec);
            line-height: 1.6;
            margin-bottom: 20px;
            min-height: 44px;
        }

        .gift-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .stock-wrap {
            flex: 1;
        }

        .stock-line {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-weak);
            margin-bottom: 6px;
        }

        .stock-bar {
            height: 4px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            overflow: hidden;
        }

        .stock-bar span {
            display: block;
            height: 100%;
            background: linear-gradient(90deg, #7C5CFC, #00E5FF);
            border-radius: 4px;
        }

        .gift-meta .btn {
            flex-shrink: 0;
        }

        /* ---------- Steps ---------- */
        .how-section {
            padding: var(--section-space) 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }

        .how-section::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(124, 92, 252, 0.15), transparent 70%);
            pointer-events: none;
        }

        .steps-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }

        .step-item {
            text-align: center;
            padding: 40px 32px;
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .step-item:hover {
            transform: translateY(-6px);
            box-shadow: 0 0 0 1px rgba(124, 92, 252, 0.4), 0 12px 40px rgba(124, 92, 252, 0.15);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #7C5CFC, #00E5FF);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 20px;
            box-shadow: 0 0 20px rgba(124, 92, 252, 0.3);
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-sec);
            line-height: 1.6;
        }

        /* ---------- Stats ---------- */
        .stats-section {
            padding: 72px 0;
            background: linear-gradient(135deg, rgba(124, 92, 252, 0.08), rgba(0, 229, 255, 0.04));
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 32px 24px;
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            transition: transform var(--transition), border-color var(--transition);
        }

        .stat-item:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 255, 0.4);
        }

        .stat-item strong {
            display: block;
            font-size: 36px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, #00E5FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.3;
        }

        .stat-item span {
            display: block;
            margin-top: 6px;
            font-size: 14px;
            color: var(--text-sec);
        }

        /* ---------- FAQ ---------- */
        .faq-section {
            padding: var(--section-space) 0;
            background: var(--bg-deep);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item.open {
            border-color: rgba(124, 92, 252, 0.5);
            box-shadow: 0 0 0 1px rgba(124, 92, 252, 0.2), 0 8px 30px rgba(0, 0, 0, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--cyan);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: -2px;
        }

        .faq-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(124, 92, 252, 0.15);
            font-size: 18px;
            font-weight: 600;
            color: var(--brand);
            transition: transform var(--transition), background var(--transition);
        }

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

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 229, 255, 0.15);
            color: var(--cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-sec);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 22px;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            padding: 0 0 var(--section-space);
            background: var(--bg-deep);
        }

        .cta-card {
            position: relative;
            background: var(--bg-dark);
            border: 1px solid var(--line);
            border-radius: 24px;
            padding: 80px 48px;
            text-align: center;
            overflow: hidden;
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, #7C5CFC, #00E5FF);
        }

        .cta-card::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(124, 92, 252, 0.18), transparent 70%);
            pointer-events: none;
        }

        .cta-card h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 14px;
        }

        .cta-card p {
            font-size: 16px;
            color: var(--text-sec);
            margin-bottom: 36px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #05070c;
            border-top: 1px solid rgba(124, 92, 252, 0.3);
            padding: 72px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-sec);
            line-height: 1.8;
            margin-top: 14px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text);
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-sec);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-weak);
        }

        .footer-bottom .icp {
            font-size: 13px;
            color: var(--text-weak);
        }

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

        .fade-up {
            animation: fadeUp 0.6s ease both;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1023px) {
            :root {
                --section-space: 76px;
            }

            .nav-menu {
                gap: 2px;
            }

            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }

            .gift-hero h1 {
                font-size: 42px;
            }

            .steps-row {
                gap: 20px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-space: 56px;
            }

            .container {
                padding: 0 16px;
            }

            .header-inner {
                height: 64px;
            }

            .logo {
                font-size: 19px;
            }

            .nav-menu {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                bottom: 0;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                background: rgba(10, 14, 23, 0.98);
                padding: 40px 24px;
                transform: translateX(100%);
                transition: transform var(--transition);
                z-index: 99;
                overflow-y: auto;
            }

            .nav-menu.open {
                transform: translateX(0);
            }

            .nav-link {
                font-size: 20px;
                font-weight: 600;
                padding: 16px 0;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                color: var(--text-sec);
            }

            .nav-link.active {
                color: var(--cyan);
                background: none;
                border-left: 4px solid var(--cyan);
                padding-left: 16px;
            }

            .nav-link.active::after {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-toggle.open span:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }

            .nav-toggle.open span:nth-child(2) {
                opacity: 0;
            }

            .nav-toggle.open span:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }

            .btn-header {
                display: none;
            }

            .gift-hero {
                padding: 120px 0 64px;
                background: linear-gradient(180deg, rgba(7, 10, 17, 0.88), rgba(7, 10, 17, 0.95)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            }

            .gift-hero h1 {
                font-size: 34px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }

            .hero-stats {
                gap: 28px;
            }

            .hero-stats .stat strong {
                font-size: 22px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .gift-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .gift-card:nth-child(even) {
                margin-top: 0;
            }

            .gift-info p {
                min-height: 0;
            }

            .steps-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .step-item {
                padding: 28px 20px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-item {
                padding: 22px 14px;
            }

            .stat-item strong {
                font-size: 26px;
            }

            .cta-card {
                padding: 48px 20px;
            }

            .cta-card h2 {
                font-size: 26px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .cta-actions .btn {
                width: 100%;
                max-width: 300px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .filter-tabs {
                flex-wrap: nowrap;
                overflow-x: auto;
                justify-content: flex-start;
                padding-bottom: 8px;
                scrollbar-width: none;
                -ms-overflow-style: none;
            }

            .filter-tabs::-webkit-scrollbar {
                display: none;
            }

            .tab {
                white-space: nowrap;
                flex-shrink: 0;
            }
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .gift-hero h1 {
                font-size: 44px;
            }

            .gift-grid {
                gap: 24px;
            }

            .gift-card:nth-child(even) {
                margin-top: 40px;
            }

            .steps-row {
                gap: 16px;
            }

            .step-item {
                padding: 30px 20px;
            }
        }

/* roulang page: category3 */
:root {
            --bg: #070A11;
            --bg2: #0D1320;
            --card: #161E2E;
            --card-hl: #1C263A;
            --border: #22304A;
            --primary: #7C5CFC;
            --primary-glow: rgba(124, 92, 252, 0.35);
            --cyan: #00E5FF;
            --pink: #FF3DA6;
            --success: #00E2A1;
            --warning: #FFC247;
            --error: #FF5470;
            --text: #F2F6FC;
            --text2: #9AA9C0;
            --text3: #6B7A93;
            --radius: 16px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
            --section-space: 96px;
            --container: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            letter-spacing: 0.015em;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        .btn-primary,
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            font-weight: 600;
            line-height: 1;
            padding: 14px 30px;
            transition: all 0.3s ease;
            font-size: 15px;
        }

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

        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 30px rgba(124, 92, 252, 0.55);
        }

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

        .btn-secondary {
            background: transparent;
            border: 1px solid var(--cyan);
            color: var(--cyan);
        }

        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
        }

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

        .btn-large {
            padding: 18px 44px;
            font-size: 16px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 12px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(7, 10, 17, 0.7);
            color: var(--cyan);
            border: 1px solid rgba(0, 229, 255, 0.35);
        }

        .text-link {
            color: var(--cyan);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
        }

        .text-link:hover {
            color: #fff;
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 3px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(7, 10, 17, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }

        .site-header::after {
            content: "";
            display: block;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            opacity: 0.6;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            white-space: nowrap;
        }

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

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 8px;
            color: var(--text2);
            font-weight: 500;
            font-size: 15px;
            position: relative;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--cyan);
            background: rgba(0, 229, 255, 0.07);
        }

        .nav-link.active {
            box-shadow: inset 0 -2px 0 var(--cyan);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            border-radius: 999px;
            padding: 10px 24px;
            font-weight: 700;
            font-size: 14px;
            box-shadow: 0 0 18px var(--primary-glow);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 28px rgba(124, 92, 252, 0.5);
        }

        .nav-cta:active {
            transform: scale(0.97);
        }

        .nav-toggle {
            display: none;
            font-size: 28px;
            color: var(--text);
            background: none;
            border: none;
            padding: 4px;
            border-radius: 8px;
        }

        .nav-toggle:hover {
            color: var(--cyan);
        }

        /* Hero */
        .page-hero {
            position: relative;
            padding: 76px 0 80px;
            background: linear-gradient(180deg, var(--bg2), var(--bg));
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 20%, rgba(124, 92, 252, 0.28), transparent 55%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            display: grid;
            grid-template-columns: 1fr 1.05fr;
            gap: 56px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(255, 61, 166, 0.12);
            border: 1px solid rgba(255, 61, 166, 0.35);
            color: var(--pink);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero-badge::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--pink);
            box-shadow: 0 0 8px var(--pink);
        }

        .page-hero h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: 0.01em;
            margin-bottom: 18px;
            color: var(--text);
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.08);
        }

        .page-hero .hero-copy>p {
            color: var(--text2);
            font-size: 16px;
            line-height: 1.8;
            max-width: 460px;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .feature-card {
            background: var(--card);
            border-radius: 20px;
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 0 0 1px rgba(124, 92, 252, 0.5), 0 16px 40px rgba(124, 92, 252, 0.25);
        }

        .feature-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            background: var(--card-hl);
        }

        .feature-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(7, 10, 17, 0.85));
        }

        .feature-content {
            padding: 22px 24px 26px;
        }

        .feature-content .tag {
            margin-bottom: 14px;
        }

        .feature-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text3);
            font-size: 13px;
            margin-bottom: 12px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: 8px;
        }

        .feature-card p {
            color: var(--text2);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        /* Section spacing */
        .section {
            padding: var(--section-space) 0;
        }

        .section-head {
            margin-bottom: 44px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text);
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }

        .section-head h2::before {
            content: "";
            width: 4px;
            height: 28px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--cyan));
        }

        .section-head p {
            color: var(--text2);
            font-size: 16px;
            max-width: 480px;
        }

        /* Value section */
        .value-section {
            padding: var(--section-space) 0;
            background: var(--bg2);
        }

        .value-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: start;
        }

        .value-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .value-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 0 0 1px rgba(0, 229, 255, 0.3), 0 14px 36px rgba(0, 229, 255, 0.12);
        }

        .value-card:first-child {
            transform: translateY(0);
        }

        .value-card:nth-child(2) {
            transform: translateY(24px);
        }

        .value-card:nth-child(3) {
            transform: translateY(10px);
            background: linear-gradient(180deg, rgba(124, 92, 252, 0.14), var(--card));
        }

        .value-card:hover:nth-child(2),
        .value-card:hover:nth-child(3) {
            transform: translateY(18px);
        }

        .value-icon {
            font-size: 30px;
            margin-bottom: 16px;
            color: var(--cyan);
            filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.3));
        }

        .value-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .value-card p {
            color: var(--text2);
            font-size: 14px;
            line-height: 1.7;
        }

        /* News list */
        .news-section {
            padding: var(--section-space) 0;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-item {
            display: grid;
            grid-template-columns: 260px 1fr;
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .news-item:hover {
            transform: translateX(6px);
            box-shadow: 0 0 0 1px rgba(0, 229, 255, 0.2), 0 12px 32px rgba(0, 0, 0, 0.35);
        }

        .news-thumb {
            min-height: 150px;
            background: var(--card-hl);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-body {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-meta {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-bottom: 10px;
            color: var(--text3);
            font-size: 13px;
        }

        .news-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-body p {
            color: var(--text2);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-body .text-link {
            align-self: flex-start;
            font-size: 14px;
        }

        /* Tags */
        .tags-section {
            padding: var(--section-space) 0;
            background: var(--bg2);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 24px;
        }

        .tag-btn {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: var(--card);
            color: var(--text2);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .tag-btn:hover {
            color: var(--cyan);
            border-color: var(--cyan);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
            transform: translateY(-2px);
        }

        .tag-btn:active {
            transform: scale(0.96);
        }

        /* FAQ */
        .faq-section {
            padding: var(--section-space) 0;
        }

        .faq-list {
            max-width: 800px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--card);
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            transition: background 0.3s ease;
        }

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

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: color 0.3s ease;
        }

        .faq-question::after {
            content: "+";
            font-size: 24px;
            font-weight: 400;
            color: var(--text3);
            transition: transform 0.3s ease, color 0.3s ease;
            flex-shrink: 0;
        }

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

        .faq-item.open .faq-question::after {
            transform: rotate(45deg);
            color: var(--cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            color: var(--text2);
            font-size: 14px;
            line-height: 1.7;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 240px;
            padding: 0 24px 20px;
        }

        /* CTA */
        .cta-section {
            padding: 0 0 var(--section-space);
        }

        .cta-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 64px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
        }

        .cta-card h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            line-height: 1.2;
        }

        .cta-card p {
            color: var(--text2);
            font-size: 16px;
            margin-bottom: 30px;
        }

        .cta-card .btn-primary {
            font-size: 17px;
        }

        /* Footer */
        .site-footer {
            background: #05070C;
            border-top: 1px solid var(--border);
            position: relative;
            padding-top: 64px;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--cyan), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand .logo {
            font-size: 24px;
            margin-bottom: 16px;
            display: inline-block;
        }

        .footer-brand p {
            color: var(--text3);
            font-size: 14px;
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            color: var(--text2);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            color: var(--text3);
            font-size: 14px;
        }

        .footer-col ul a:hover {
            color: var(--cyan);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            color: var(--text3);
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .nav-menu {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                bottom: 0;
                background: #0A0E17;
                flex-direction: column;
                align-items: stretch;
                padding: 28px 24px;
                gap: 20px;
                overflow-y: auto;
                z-index: 98;
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-link {
                font-size: 26px;
                padding: 14px 16px;
                border-left: 4px solid transparent;
            }

            .nav-link.active {
                border-left-color: var(--cyan);
                box-shadow: none;
            }

            .nav-toggle {
                display: block;
            }

            .nav-cta {
                display: none;
            }

            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .value-grid {
                grid-template-columns: 1fr 1fr;
            }

            .value-card:nth-child(3) {
                grid-column: span 2;
                transform: none;
            }

            .value-card:nth-child(2),
            .value-card:nth-child(3):hover,
            .value-card:hover:nth-child(3) {
                transform: none;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-space: 60px;
            }

            .container {
                padding: 0 16px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .page-hero {
                padding: 48px 0 56px;
            }

            .page-hero h1 {
                font-size: 28px;
                line-height: 1.2;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
            }

            .feature-card h3 {
                font-size: 17px;
            }

            .value-grid {
                grid-template-columns: 1fr;
            }

            .value-card:nth-child(3) {
                grid-column: auto;
            }

            .news-item {
                grid-template-columns: 1fr;
            }

            .news-thumb {
                min-height: 100px;
                max-height: 180px;
            }

            .news-body h3 {
                font-size: 16px;
            }

            .cta-card {
                padding: 40px 20px;
            }

            .cta-card h2 {
                font-size: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 24px;
            }

            .news-body p {
                -webkit-line-clamp: 2;
            }
        }