/* roulang page: index */
:root {
    --color-primary: #0A1930;
    --color-accent: #00D4FF;
    --color-accent-2: #7E6FFF;
    --color-success: #36F1B2;
    --color-warning: #FFB454;
    --color-bg-deep: #060D1F;
    --color-bg: #0B1D3A;
    --color-text: #FFFFFF;
    --color-text-weak: rgba(255,255,255,0.6);
    --color-text-dim: rgba(255,255,255,0.4);
    --color-border: rgba(255,255,255,0.12);
    --color-glow: rgba(0,212,255,0.15);
    --radius: 16px;
    --radius-sm: 12px;
    --shadow: 0 12px 30px rgba(0,0,0,0.25);
    --shadow-glow: 0 0 0 4px rgba(0,212,255,0.12), 0 18px 40px rgba(0,212,255,0.10);
    --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.75;
    background: linear-gradient(135deg, var(--color-bg-deep) 0%, var(--color-bg) 50%, #0E2A4D 100%) fixed;
    color: var(--color-text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    tabular-nums: true;
}
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 44px 44px;
    pointer-events: none;
    z-index: 0;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
a { color: #A6E9FF; text-decoration: none; transition: color 0.25s, box-shadow 0.25s; }
a:hover { color: #FFFFFF; }
a:focus-visible, button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 6px;
}
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* === 导航 === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 12px 2% 0;
    pointer-events: none;
}
.nav-panel {
    max-width: 1200px;
    margin: 0 auto;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(6,13,31,0.72);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: 18px;
    border: 1px solid rgba(255,255,255,0.08);
    border-bottom: 1px solid rgba(0,212,255,0.3);
    box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 0 1px rgba(0,212,255,0.05);
    padding: 0 20px;
    pointer-events: auto;
    position: relative;
}
.nav-panel::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 20px;
    right: 20px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,212,255,0.6), transparent);
}
.nav-left { display: flex; align-items: center; }
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    border-radius: 12px;
    transition: var(--transition);
}
.brand-logo:hover { background: rgba(0,212,255,0.06); }
.logo-icon {
    width: 34px; height: 34px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 15px; color: #061A2E;
    box-shadow: 0 0 20px rgba(0,212,255,0.35);
}
.logo-text {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--color-text);
    white-space: nowrap;
    background: linear-gradient(90deg, #fff, #A6E9FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.nav-center {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    justify-content: center;
    padding: 0 16px;
}
.nav-card {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 48px;
    padding: 0 18px;
    border-radius: 12px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    color: var(--color-text-weak);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    text-decoration: none;
}
.nav-card i { font-size: 0.95rem; color: rgba(0,212,255,0.7); transition: var(--transition); }
.nav-card:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(0,212,255,0.4);
    color: var(--color-text);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}
.nav-card:hover i { color: var(--color-accent); }
.nav-card.active {
    background: rgba(0,212,255,0.08);
    border-color: rgba(0,212,255,0.25);
    color: var(--color-text);
    box-shadow: inset 0 -2px 0 var(--color-accent), 0 4px 20px rgba(0,212,255,0.08);
}
.nav-card.active i { color: var(--color-accent); }
.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
    color: #061A2E;
    font-size: 0.95rem;
    font-weight: 700;
    padding: 10px 22px;
    border-radius: 12px;
    border: none;
    height: 42px;
    white-space: nowrap;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,212,255,0.25), inset 0 1px 0 rgba(255,255,255,0.4);
    transition: var(--transition);
    text-decoration: none;
}
.btn-primary:hover {
    box-shadow: 0 6px 30px rgba(0,212,255,0.4), inset 0 1px 0 rgba(255,255,255,0.5);
    transform: translateY(-2px);
    color: #061A2E;
}
.btn-primary:active { transform: scale(0.98); }
.btn-primary.btn-sm { height: 40px; padding: 0 20px; font-size: 0.875rem; }
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--color-text-weak);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 10px 22px;
    border-radius: 12px;
    height: 42px;
    white-space: nowrap;
    cursor: pointer;
    backdrop-filter: blur(8px);
    transition: var(--transition);
    text-decoration: none;
}
.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    box-shadow: 0 0 20px rgba(0,212,255,0.1);
    transform: translateY(-2px);
}
.nav-toggle {
    display: none;
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: var(--transition);
}
.nav-toggle:hover { background: rgba(0,212,255,0.08); }
.nav-toggle span {
    display: block;
    width: 18px; height: 2px;
    background: var(--color-text-weak);
    border-radius: 2px;
    transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--color-accent); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--color-accent); }

/* === Hero === */
.hero {
    position: relative;
    min-height: 86vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 140px 0 100px;
    overflow: hidden;
    margin-top: 0;
}
.hero-bg {
    position: absolute;
    top: -80px; left: -80px;
    width: calc(100% + 160px); height: calc(100% + 160px);
    background-size: cover;
    background-position: center;
    opacity: 0.35;
    z-index: 0;
    filter: blur(2px) saturate(1.2);
}
.hero-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background:
        radial-gradient(ellipse at 30% 40%, rgba(0,212,255,0.18) 0%, transparent 45%),
        radial-gradient(ellipse at 70% 65%, rgba(126,111,255,0.12) 0%, transparent 40%),
        linear-gradient(to bottom, rgba(6,13,31,0.6) 0%, rgba(6,13,31,0.4) 50%, var(--color-bg-deep) 100%);
    z-index: 0;
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 860px;
    margin: 0 auto;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0,212,255,0.08);
    border: 1px solid rgba(0,212,255,0.25);
    color: #A6E9FF;
    font-size: 0.85rem;
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 24px;
    backdrop-filter: blur(8px);
    letter-spacing: 0.04em;
}
.hero-badge i { font-size: 0.8rem; }
.hero h1 {
    font-size: clamp(2.2rem, 4.6vw, 3.4rem);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 60%, #A6E9FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-subtitle {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.65);
    max-width: 640px;
    margin: 0 auto 36px;
}
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.hero-metrics {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    gap: 0;
    margin-top: 70px;
    flex-wrap: wrap;
}
.metric-item {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(14px);
    border-radius: 14px;
    padding: 14px 26px;
    text-align: center;
    margin: 0 8px;
    min-width: 120px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.metric-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}
.metric-item:hover {
    border-color: rgba(0,212,255,0.3);
    transform: translateY(-3px);
}
.metric-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    font-variant-numeric: tabular-nums;
}
.metric-label {
    font-size: 0.8rem;
    color: var(--color-text-weak);
    display: block;
    margin-top: 2px;
}
.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px; height: 40px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.5);
    z-index: 3;
    animation: bounceDown 2s infinite;
    cursor: pointer;
    transition: var(--transition);
}
.hero-scroll:hover { border-color: var(--color-accent); color: var(--color-accent); }
@keyframes bounceDown {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* === 板块通用 === */
.section {
    position: relative;
    padding: clamp(3.5rem, 7vw, 5.5rem) 0;
    z-index: 1;
}
.section-head {
    text-align: center;
    margin-bottom: 50px;
}
.section-head .section-tag {
    display: inline-block;
    font-size: 0.82rem;
    color: var(--color-accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: rgba(0,212,255,0.06);
    border: 1px solid rgba(0,212,255,0.15);
    padding: 4px 14px;
    border-radius: 50px;
    margin-bottom: 14px;
}
.section-head h2 {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 10px;
}
.section-head p {
    color: var(--color-text-weak);
    max-width: 600px;
    margin: 0 auto;
    font-size: 0.95rem;
}

/* === 玩法介绍卡片 === */
.play-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.play-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 32px 28px 28px;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
    box-shadow: var(--shadow);
    border-top: 1px solid rgba(255,255,255,0.12);
}
.play-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,212,255,0.4), transparent);
}
.play-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,212,255,0.15), transparent);
}
.play-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(0,212,255,0.25);
}
.play-icon {
    width: 52px; height: 52px;
    background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(126,111,255,0.12));
    border: 1px solid rgba(0,212,255,0.25);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--color-accent);
    margin-bottom: 20px;
    box-shadow: 0 0 24px rgba(0,212,255,0.08);
    transition: var(--transition);
}
.play-card:hover .play-icon {
    box-shadow: 0 0 30px rgba(0,212,255,0.2);
    transform: scale(1.05);
}
.play-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
}
.play-card p {
    font-size: 0.9rem;
    color: var(--color-text-weak);
    line-height: 1.7;
    margin-bottom: 0;
}
.play-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 0.85rem;
    color: #A6E9FF;
    transition: var(--transition);
    position: relative;
}
.play-more:hover {
    color: var(--color-accent);
    transform: translateX(4px);
}

/* === 奖励预览 === */
.rewards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.reward-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    padding: 28px 24px 24px;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow);
    overflow: hidden;
}
.reward-card.main {
    background: linear-gradient(145deg, rgba(0,212,255,0.15), rgba(126,111,255,0.08));
    border: 1px solid rgba(0,212,255,0.35);
    box-shadow: var(--shadow-glow);
    transform: scale(1.03);
}
.reward-card.main::before {
    content: '';
    position: absolute;
    top: -40%; left: -40%;
    width: 180%; height: 180%;
    background: radial-gradient(circle, rgba(0,212,255,0.12), transparent 60%);
    pointer-events: none;
}
.reward-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(0,212,255,0.3);
}
.reward-card.main:hover { transform: translateY(-4px) scale(1.03); }
.reward-badge {
    position: absolute;
    top: 14px; right: 14px;
    background: linear-gradient(135deg, var(--color-warning), #FF7A45);
    color: #061A2E;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 50px;
    box-shadow: 0 2px 8px rgba(255,180,84,0.3);
}
.reward-icon {
    width: 48px; height: 48px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-accent);
    margin-bottom: 18px;
    transition: var(--transition);
}
.reward-card.main .reward-icon {
    background: linear-gradient(135deg, rgba(0,212,255,0.2), rgba(126,111,255,0.15));
    border-color: rgba(0,212,255,0.4);
    color: var(--color-accent);
}
.reward-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.reward-card p {
    font-size: 0.85rem;
    color: var(--color-text-weak);
    line-height: 1.65;
    margin-bottom: 0;
}

/* === 任务进度 === */
.progress-section {
    background: rgba(6,13,31,0.3);
    border-top: 1px solid rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.04);
    position: relative;
}
.progress-section::before {
    content: '';
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 60%; height: 100%;
    background: radial-gradient(ellipse, rgba(0,212,255,0.05), transparent 70%);
    pointer-events: none;
}
.progress-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 44px;
}
.progress-step {
    text-align: center;
    position: relative;
    padding: 0 16px;
}
.progress-step::before {
    content: '';
    position: absolute;
    top: 20px;
    left: calc(50% + 30px);
    width: calc(100% - 60px);
    height: 2px;
    background: rgba(255,255,255,0.15);
    border-radius: 1px;
}
.progress-step:last-child::before { display: none; }
.progress-step.done::before { background: var(--color-accent); box-shadow: 0 0 10px rgba(0,212,255,0.3); }
.progress-step.current::before { background: linear-gradient(90deg, var(--color-accent), rgba(255,255,255,0.15)); }
.progress-dot {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    border: 2px solid rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-weak);
    position: relative;
    transition: var(--transition);
    font-variant-numeric: tabular-nums;
}
.progress-step.done .progress-dot {
    background: var(--color-success);
    border-color: var(--color-success);
    color: #061A2E;
    box-shadow: 0 0 18px rgba(54,241,178,0.3);
}
.progress-step.current .progress-dot {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #061A2E;
    box-shadow: 0 0 0 6px rgba(0,212,255,0.15);
}
.progress-step h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 6px;
}
.progress-step p {
    font-size: 0.82rem;
    color: var(--color-text-weak);
    line-height: 1.6;
}
.progress-cta {
    text-align: center;
    margin-top: 10px;
}
.progress-cta .btn-primary {
    min-width: 200px;
    padding: 14px 40px;
    font-size: 1rem;
    height: 50px;
}

/* === 资讯动态 === */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.news-card-item {
    background: linear-gradient(145deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}
.news-card-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(0,212,255,0.2);
}
.news-thumb {
    position: relative;
    height: 160px;
    overflow: hidden;
    border-radius: var(--radius) var(--radius) 0 0;
    background: rgba(255,255,255,0.03);
}
.news-thumb img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.news-card-item:hover .news-thumb img { transform: scale(1.05); }
.news-thumb::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius) var(--radius) 0 0;
    pointer-events: none;
}
.news-body {
    padding: 22px 22px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.news-cat {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    color: #061A2E;
    background: linear-gradient(135deg, var(--color-accent), var(--color-success));
    padding: 2px 10px;
    border-radius: 50px;
    margin-bottom: 12px;
    align-self: flex-start;
    box-shadow: 0 2px 8px rgba(0,212,255,0.15);
}
.news-body h3 {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 8px;
}
.news-body h3 a {
    color: var(--color-text);
    transition: var(--transition);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-body h3 a:hover { color: var(--color-accent); }
.news-body p.excerpt {
    font-size: 0.85rem;
    color: var(--color-text-weak);
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
    flex: 1;
}
.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 14px;
    font-size: 0.82rem;
}
.news-meta time {
    color: var(--color-text-dim);
    font-variant-numeric: tabular-nums;
}
.news-meta a {
    color: #A6E9FF;
    font-weight: 500;
    transition: var(--transition);
    display: inline-block;
}
.news-meta a:hover { color: var(--color-accent); transform: translateX(3px); }
.news-empty {
    border: 2px dashed rgba(255,255,255,0.15);
    border-radius: var(--radius);
    padding: 60px 30px;
    text-align: center;
    color: var(--color-text-dim);
    font-size: 0.95rem;
    grid-column: 1 / -1;
    background: rgba(255,255,255,0.02);
}
.news-empty i {
    font-size: 2rem;
    display: block;
    margin-bottom: 12px;
    color: rgba(255,255,255,0.15);
}

/* === FAQ === */
.faq-wrap {
    max-width: 780px;
    margin: 0 auto;
}
.faq-wrap .accordion {
    background: transparent;
    border: none;
    border-radius: 0;
}
.faq-wrap .accordion-item {
    background: rgba(255,255,255,0.03);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 14px;
    margin-bottom: 14px;
    transition: var(--transition);
    overflow: hidden;
}
.faq-wrap .accordion-item:hover { border-color: rgba(0,212,255,0.25); }
.faq-wrap .accordion-item.is-active {
    border-color: rgba(0,212,255,0.4);
    box-shadow: 0 0 20px rgba(0,212,255,0.06);
}
.faq-wrap .accordion-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    padding: 16px 50px 16px 20px;
    min-height: 54px;
    display: flex;
    align-items: center;
    position: relative;
    border-bottom: none;
    transition: var(--transition);
    line-height: 1.5;
}
.faq-wrap .accordion-title:hover { background: rgba(0,212,255,0.04); }
.faq-wrap .accordion-title::before {
    content: '';
    position: absolute;
    right: 18px;
    top: 50%;
    width: 10px; height: 10px;
    border-right: 2px solid var(--color-accent);
    border-bottom: 2px solid var(--color-accent);
    transform: translateY(-70%) rotate(45deg);
    transition: transform 0.3s;
    opacity: 0.7;
}
.faq-wrap .accordion-item.is-active .accordion-title::before {
    transform: translateY(-30%) rotate(225deg);
    opacity: 1;
}
.faq-wrap .accordion-content {
    background: transparent;
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 0 20px 18px;
    font-size: 0.9rem;
    color: var(--color-text-weak);
    line-height: 1.75;
}
.faq-wrap .accordion-content p { margin: 0; }

/* === CTA === */
.cta-section {
    text-align: center;
    padding: 80px 0;
    position: relative;
    background: radial-gradient(ellipse at center, rgba(0,212,255,0.06) 0%, transparent 70%);
}
.cta-section h2 {
    font-size: clamp(1.6rem, 2.6vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 14px;
}
.cta-section p {
    color: var(--color-text-weak);
    margin-bottom: 30px;
    font-size: 1rem;
}
.cta-btns {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* === 页脚 === */
.site-footer {
    background: rgba(3,8,18,0.8);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 60px 0 24px;
    position: relative;
    z-index: 1;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 44px;
}
.footer-brand {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}
.footer-desc {
    font-size: 0.85rem;
    color: var(--color-text-dim);
    line-height: 1.7;
    max-width: 260px;
}
.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 14px;
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
    font-size: 0.85rem;
    color: var(--color-text-dim);
    transition: var(--transition);
    display: inline-block;
}
.footer-col ul li a:hover { color: var(--color-accent); transform: translateX(3px); }
.footer-copyright {
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 24px;
    font-size: 0.82rem;
    color: var(--color-text-dim);
}
.footer-copyright span { color: rgba(255,255,255,0.4); }

/* === 响应式 === */
@media screen and (max-width: 1024px) {
    .nav-center { gap: 8px; }
    .nav-card { padding: 0 12px; font-size: 0.85rem; }
    .rewards-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media screen and (max-width: 768px) {
    .nav-panel {
        height: 64px;
        padding: 0 14px;
    }
    .nav-center {
        display: none;
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        width: 100%;
        background: rgba(6,13,31,0.95);
        backdrop-filter: blur(24px);
        border-radius: 16px;
        border: 1px solid rgba(255,255,255,0.08);
        flex-direction: column;
        padding: 16px;
        gap: 8px;
        box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        z-index: 1000;
    }
    .nav-center.show { display: flex; }
    .nav-card {
        width: 100%;
        height: 52px;
        justify-content: center;
        font-size: 0.9rem;
    }
    .nav-right { display: none; }
    .nav-right.show {
        display: flex;
        position: absolute;
        top: calc(100% + 8px);
        right: 0;
        width: 50%;
        padding: 8px 16px;
        z-index: 1001;
    }
    .nav-toggle {
        display: flex;
        margin-left: auto;
    }
    .brand-logo { padding: 6px 8px; }
    .hero { min-height: 74vh; padding: 110px 0 80px; }
    .hero-metrics { flex-wrap: wrap; gap: 10px; }
    .metric-item { margin: 4px; }
}

@media screen and (max-width: 640px) {
    .container { padding: 0 18px; }
    .hero { padding: 100px 0 60px; }
    .hero h1 { font-size: 1.9rem; }
    .hero-subtitle { font-size: 0.95rem; }
    .play-cards { grid-template-columns: 1fr; }
    .rewards-grid { grid-template-columns: 1fr; }
    .progress-steps { grid-template-columns: 1fr; gap: 12px; }
    .progress-step::before { display: none; }
    .news-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-desc { max-width: none; }
    .hero-actions { flex-direction: column; align-items: center; }
    .btn-primary, .btn-secondary { width: 100%; max-width: 260px; }
    .metric-item { min-width: 100px; padding: 10px 18px; }
    .metric-value { font-size: 1.2rem; }
}

/* roulang page: category1 */
:root{
    --color-bg:#060D1F;
    --color-bg-alt:#0B1D3A;
    --color-primary:#0A1930;
    --color-accent:#00D4FF;
    --color-secondary:#7E6FFF;
    --color-positive:#36F1B2;
    --color-warning:#FFB454;
    --color-text:#E8F0FE;
    --color-text-dim:rgba(232,240,254,.62);
    --color-text-faint:rgba(232,240,254,.4);
    --color-border:rgba(255,255,255,.08);
    --radius:16px;
    --radius-sm:10px;
    --shadow:0 12px 30px rgba(0,0,0,.25);
    --shadow-glow:0 0 0 4px rgba(0,212,255,.12),0 18px 40px rgba(0,212,255,.1);
    --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:var(--font);
    font-size:.9375rem;
    line-height:1.75;
    color:var(--color-text);
    background:var(--color-bg);
    background-image:
        radial-gradient(ellipse at 15% 0%,rgba(126,111,255,.12) 0%,transparent 60%),
        radial-gradient(ellipse at 85% 20%,rgba(0,212,255,.08) 0%,transparent 50%),
        linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
    background-size:100% 100%,100% 100%,48px 48px,48px 48px;
    background-attachment:fixed;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
}
a{color:#A6E9FF;text-decoration:none;transition:color .25s ease}
a:hover{color:#fff}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
::selection{background:rgba(0,212,255,.25);color:#fff}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;border-radius:4px}

/* ── Header / Nav ── */
.site-header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:1000;
    padding:12px 2% 0;
}
.nav-panel{
    max-width:1200px;
    height:72px;
    margin:0 auto;
    padding:0 18px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    background:rgba(6,13,31,.72);
    backdrop-filter:blur(24px);
    -webkit-backdrop-filter:blur(24px);
    border:1px solid rgba(255,255,255,.08);
    border-bottom:1px solid rgba(0,212,255,.35);
    border-radius:18px;
    box-shadow:0 12px 36px rgba(0,0,0,.35);
    position:relative;
}
.nav-panel::before{
    content:"";
    position:absolute;
    top:-1px;left:30px;right:30px;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(0,212,255,.5),transparent);
    pointer-events:none;
}
.nav-left{display:flex;align-items:center}
.brand-logo{
    display:flex;
    align-items:center;
    gap:10px;
    color:#fff;
    font-weight:700;
    font-size:1.1rem;
    letter-spacing:.02em;
    white-space:nowrap;
}
.brand-logo:hover{color:#fff}
.logo-icon{
    width:38px;height:38px;
    border-radius:12px;
    background:linear-gradient(135deg,#00D4FF,#7E6FFF);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
    color:#061A2E;
    box-shadow:0 0 18px rgba(0,212,255,.35);
    flex-shrink:0;
}
.nav-center{
    display:flex;
    align-items:center;
    gap:8px;
}
.nav-card{
    display:flex;
    align-items:center;
    gap:8px;
    height:46px;
    padding:0 16px;
    border-radius:12px;
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.08);
    color:var(--color-text-dim);
    font-size:.875rem;
    font-weight:500;
    transition:all .25s ease;
    white-space:nowrap;
}
.nav-card i{font-size:.85rem;color:var(--color-accent);opacity:.7}
.nav-card:hover{
    background:rgba(255,255,255,.09);
    border-color:rgba(0,212,255,.3);
    color:#fff;
    transform:translateY(-1px);
}
.nav-card:hover i{opacity:1}
.nav-card.active{
    background:rgba(0,212,255,.1);
    border-color:rgba(0,212,255,.4);
    color:#fff;
    box-shadow:0 0 16px rgba(0,212,255,.15);
    position:relative;
}
.nav-card.active::after{
    content:"";
    position:absolute;
    bottom:-1px;left:20%;right:20%;
    height:2px;
    background:var(--color-accent);
    border-radius:2px 2px 0 0;
    box-shadow:0 0 8px rgba(0,212,255,.6);
}
.nav-card.active i{opacity:1}
.nav-right{display:flex;align-items:center}
.btn-primary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    border:none;
    cursor:pointer;
    border-radius:12px;
    padding:12px 28px;
    background:linear-gradient(135deg,#00D4FF,#7E6FFF);
    color:#061A2E;
    font-family:var(--font);
    font-size:.95rem;
    font-weight:600;
    line-height:1;
    box-shadow:0 4px 20px rgba(0,212,255,.3),inset 0 1px 0 rgba(255,255,255,.3);
    transition:all .25s ease;
    white-space:nowrap;
}
.btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 8px 32px rgba(0,212,255,.45),inset 0 1px 0 rgba(255,255,255,.35);
    color:#061A2E;
}
.btn-primary:active{
    transform:scale(.98);
    box-shadow:0 4px 18px rgba(0,212,255,.3);
}
.btn-sm{padding:10px 20px;font-size:.875rem;border-radius:10px;height:40px}
.btn-lg{padding:16px 40px;font-size:1rem;border-radius:14px}
.btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    border-radius:12px;
    padding:12px 28px;
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.2);
    color:var(--color-text);
    font-family:var(--font);
    font-size:.95rem;
    font-weight:500;
    cursor:pointer;
    transition:all .25s ease;
    backdrop-filter:blur(8px);
}
.btn-ghost:hover{
    border-color:var(--color-accent);
    color:var(--color-accent);
    background:rgba(0,212,255,.06);
    transform:translateY(-2px);
}
.nav-toggle{
    display:none;
    flex-direction:column;
    gap:4px;
    border:none;
    background:transparent;
    padding:8px;
    border-radius:8px;
    cursor:pointer;
}
.nav-toggle span{
    display:block;
    width:20px;height:2px;
    background:var(--color-accent);
    border-radius:2px;
    transition:all .25s ease;
}
.nav-toggle:hover span{box-shadow:0 0 8px rgba(0,212,255,.5)}

/* ── Hero ── */
.category-hero{
    position:relative;
    min-height:86vh;
    display:flex;
    align-items:center;
    justify-content:center;
    background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding:140px 0 80px;
    overflow:hidden;
}
.hero-overlay{
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,rgba(6,13,31,.78) 0%,rgba(6,13,31,.55) 50%,rgba(6,13,31,.92) 100%);
}
.hero-grid-overlay{
    position:absolute;
    inset:0;
    background-image:
        linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
    background-size:42px 42px;
    pointer-events:none;
}
.hero-glow-1{
    position:absolute;
    top:15%;left:10%;
    width:360px;height:360px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(0,212,255,.25) 0%,transparent 65%);
    filter:blur(40px);
    pointer-events:none;
}
.hero-glow-2{
    position:absolute;
    bottom:20%;right:8%;
    width:420px;height:420px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(126,111,255,.22) 0%,transparent 65%);
    filter:blur(50px);
    pointer-events:none;
}
.hero-content{
    position:relative;
    z-index:2;
    text-align:center;
    max-width:820px;
    padding:0 24px;
}
.hero-badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 20px;
    border-radius:40px;
    background:rgba(0,212,255,.1);
    border:1px solid rgba(0,212,255,.35);
    color:#A6E9FF;
    font-size:.8125rem;
    font-weight:500;
    letter-spacing:.03em;
    margin-bottom:24px;
    backdrop-filter:blur(8px);
}
.hero-badge i{font-size:.75rem}
.category-hero h1{
    font-size:clamp(2.2rem,4.6vw,3.4rem);
    font-weight:700;
    color:#fff;
    letter-spacing:-.02em;
    line-height:1.2;
    margin-bottom:20px;
    text-shadow:0 4px 32px rgba(0,0,0,.4);
}
.hero-sub{
    font-size:1.125rem;
    color:rgba(232,240,254,.75);
    max-width:640px;
    margin:0 auto 36px;
    line-height:1.8;
}
.hero-actions{
    display:flex;
    gap:16px;
    justify-content:center;
    flex-wrap:wrap;
}
.hero-metrics{
    position:relative;
    z-index:2;
    display:flex;
    justify-content:center;
    gap:16px;
    margin-top:52px;
    flex-wrap:wrap;
}
.metric-badge{
    background:rgba(6,13,31,.65);
    backdrop-filter:blur(14px);
    border:1px solid rgba(255,255,255,.1);
    border-radius:14px;
    padding:14px 28px;
    text-align:center;
    min-width:130px;
}
.metric-num{
    display:block;
    font-size:1.65rem;
    font-weight:700;
    font-variant-numeric:tabular-nums;
    color:#fff;
    line-height:1.2;
}
.metric-num span{color:var(--color-accent)}
.metric-label{
    display:block;
    font-size:.8125rem;
    color:var(--color-text-dim);
    margin-top:4px;
}
.breadcrumb-bar{
    position:relative;
    z-index:2;
    margin-top:32px;
    text-align:center;
}
.breadcrumb-bar a,.breadcrumb-bar span{
    display:inline-block;
    font-size:.8125rem;
    color:var(--color-text-dim);
    padding:4px 12px;
    background:rgba(255,255,255,.05);
    border-radius:20px;
    border:1px solid rgba(255,255,255,.08);
    margin:0 2px;
}
.breadcrumb-bar a:hover{
    border-color:rgba(0,212,255,.35);
    color:#fff;
}
.breadcrumb-bar .sep{
    background:transparent;
    border:none;
    padding:0;
    color:rgba(255,255,255,.4);
    margin:0;
}

/* ── Section Common ── */
.section-block{padding:clamp(3.5rem,7vw,5.5rem) 0;position:relative}
.section-tag{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:.8125rem;
    color:var(--color-accent);
    background:rgba(0,212,255,.08);
    border:1px solid rgba(0,212,255,.2);
    padding:6px 16px;
    border-radius:30px;
    margin-bottom:16px;
    letter-spacing:.03em;
}
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.section-head h2{
    font-size:clamp(1.5rem,2.4vw,2rem);
    font-weight:700;
    color:#fff;
    letter-spacing:-.01em;
    margin-bottom:14px;
}
.section-head p{
    color:var(--color-text-dim);
    font-size:1rem;
    line-height:1.75;
}
.section-head .line{
    width:56px;height:3px;
    background:linear-gradient(90deg,var(--color-accent),var(--color-secondary));
    border-radius:3px;
    margin:16px auto 0;
}

/* ── Guide Cards ── */
.guide-card{
    background:linear-gradient(160deg,rgba(255,255,255,.07) 0%,rgba(255,255,255,.02) 100%);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border:1px solid rgba(255,255,255,.09);
    border-radius:var(--radius);
    overflow:hidden;
    height:100%;
    display:flex;
    flex-direction:column;
    box-shadow:var(--shadow);
    transition:all .3s ease;
    position:relative;
}
.guide-card::before{
    content:"";
    position:absolute;
    top:0;left:0;right:0;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(0,212,255,.4),transparent);
    opacity:0;
    transition:opacity .3s ease;
}
.guide-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-glow);
    border-color:rgba(0,212,255,.2);
}
.guide-card:hover::before{opacity:1}
.guide-card-img{
    position:relative;
    height:190px;
    overflow:hidden;
}
.guide-card-img img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .45s ease;
}
.guide-card:hover .guide-card-img img{transform:scale(1.05)}
.guide-card-img::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,transparent 55%,rgba(6,13,31,.72) 100%);
}
.guide-card-body{
    padding:28px;
    flex:1;
    display:flex;
    flex-direction:column;
    position:relative;
}
.guide-card-icon{
    width:52px;height:52px;
    border-radius:14px;
    background:linear-gradient(135deg,rgba(0,212,255,.2),rgba(126,111,255,.2));
    border:1px solid rgba(0,212,255,.3);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:20px;
    color:var(--color-accent);
    margin-top:-38px;
    margin-bottom:16px;
    position:relative;
    box-shadow:0 0 20px rgba(0,212,255,.15);
    backdrop-filter:blur(8px);
}
.guide-card h3{
    font-size:1.25rem;
    font-weight:600;
    color:#fff;
    margin-bottom:10px;
    letter-spacing:.01em;
}
.guide-card p{
    font-size:.875rem;
    color:var(--color-text-dim);
    line-height:1.75;
    flex:1;
}
.guide-card-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:16px;
    font-size:.875rem;
    color:var(--color-accent);
    font-weight:500;
    transition:gap .25s ease;
}
.guide-card-link:hover{gap:11px;color:#fff}

/* ── Features ── */
.feature-card{
    background:rgba(255,255,255,.04);
    border:1px solid rgba(255,255,255,.07);
    border-radius:var(--radius);
    padding:32px 28px;
    height:100%;
    transition:all .3s ease;
    position:relative;
    overflow:hidden;
}
.feature-card::before{
    content:"";
    position:absolute;
    bottom:0;left:0;right:0;
    height:2px;
    background:linear-gradient(90deg,var(--color-accent),var(--color-secondary));
    border-radius:2px;
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .35s ease;
}
.feature-card:hover{
    transform:translateY(-4px);
    background:rgba(255,255,255,.06);
    border-color:rgba(0,212,255,.2);
    box-shadow:var(--shadow-glow);
}
.feature-card:hover::before{transform:scaleX(1)}
.feature-icon{
    width:48px;height:48px;
    border-radius:12px;
    background:linear-gradient(135deg,#00D4FF,#7E6FFF);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    color:#061A2E;
    margin-bottom:18px;
    box-shadow:0 0 16px rgba(0,212,255,.3);
}
.feature-card h3{
    font-size:1.05rem;
    font-weight:600;
    color:#fff;
    margin-bottom:10px;
}
.feature-card p{
    font-size:.875rem;
    color:var(--color-text-dim);
    line-height:1.7;
}
.feature-card .feature-num{
    position:absolute;
    top:20px;right:24px;
    font-size:2.2rem;
    font-weight:800;
    color:rgba(255,255,255,.06);
    line-height:1;
    font-variant-numeric:tabular-nums;
}

/* ── Stats ── */
.stats-section{
    padding:clamp(3rem,6vw,4.5rem) 0;
    position:relative;
    background:rgba(0,212,255,.03);
    border-top:1px solid rgba(0,212,255,.08);
    border-bottom:1px solid rgba(0,212,255,.08);
}
.stats-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
}
.stat-item{
    text-align:center;
    padding:36px 24px;
    border-radius:var(--radius);
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.08);
    backdrop-filter:blur(14px);
    transition:all .3s ease;
    position:relative;
    overflow:hidden;
}
.stat-item::before{
    content:"";
    position:absolute;
    top:0;left:30%;right:30%;
    height:1px;
    background:linear-gradient(90deg,transparent,var(--color-accent),transparent);
    opacity:0;
    transition:opacity .3s ease;
}
.stat-item:hover{
    transform:translateY(-3px);
    border-color:rgba(0,212,255,.25);
    box-shadow:0 12px 30px rgba(0,0,0,.3);
}
.stat-item:hover::before{opacity:1}
.stat-num{
    font-size:2.2rem;
    font-weight:700;
    color:#fff;
    line-height:1.1;
    letter-spacing:-.02em;
    font-variant-numeric:tabular-nums;
    margin-bottom:8px;
}
.stat-num i{
    font-style:normal;
    color:var(--color-accent);
}
.stat-label{
    font-size:.875rem;
    color:var(--color-text-dim);
}
.stat-icon{
    font-size:1.2rem;
    color:var(--color-accent);
    margin-bottom:12px;
}

/* ── Process / Steps ── */
.process-steps{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:0;
    position:relative;
    margin-top:20px;
}
.process-steps::before{
    content:"";
    position:absolute;
    top:32px;left:10%;right:10%;
    height:2px;
    background:linear-gradient(90deg,var(--color-accent) 0%,var(--color-accent) 55%,rgba(255,255,255,.15) 55%,rgba(255,255,255,.15) 100%);
    border-radius:2px;
}
.step-item{
    text-align:center;
    padding:0 20px;
    position:relative;
    z-index:1;
}
.step-dot{
    width:64px;height:64px;
    border-radius:50%;
    background:rgba(6,13,31,.9);
    border:2px solid var(--color-accent);
    display:flex;
    align-items:center;
    justify-content:center;
    margin:0 auto 18px;
    font-size:22px;
    color:var(--color-accent);
    box-shadow:0 0 0 6px rgba(0,212,255,.1),0 0 24px rgba(0,212,255,.25);
    position:relative;
}
.step-dot.done{
    background:rgba(0,212,255,.15);
    border-color:var(--color-positive);
    color:var(--color-positive);
    box-shadow:0 0 0 6px rgba(54,241,178,.1),0 0 24px rgba(54,241,178,.2);
}
.step-dot.arced{
    background:linear-gradient(135deg,rgba(0,212,255,.2),rgba(126,111,255,.2));
    border-color:rgba(126,111,255,.5);
    color:#fff;
}
.step-title{
    font-size:1rem;
    font-weight:600;
    color:#fff;
    margin-bottom:8px;
}
.step-desc{
    font-size:.8125rem;
    color:var(--color-text-dim);
    line-height:1.6;
    max-width:220px;
    margin:0 auto;
}

/* ── FAQ ── */
.faq-section{
    background:rgba(6,13,31,.5);
    border-top:1px solid rgba(255,255,255,.05);
}
.faq-wrap{
    max-width:820px;
    margin:0 auto;
}
.accordion{
    list-style:none;
    margin:0;
    background:transparent;
}
.accordion-item{
    background:rgba(255,255,255,.04);
    border:1px solid rgba(255,255,255,.08);
    border-radius:14px;
    margin-bottom:14px;
    overflow:hidden;
    transition:all .3s ease;
}
.accordion-item:hover{
    border-color:rgba(0,212,255,.2);
}
.accordion-item.is-active{
    border-color:rgba(0,212,255,.35);
    box-shadow:0 0 24px rgba(0,212,255,.08);
}
.accordion-title{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 22px;
    font-size:.9375rem;
    font-weight:500;
    color:var(--color-text);
    background:transparent;
    border:none;
    cursor:pointer;
    min-height:48px;
    transition:color .25s ease;
}
.accordion-title:hover{
    color:#fff;
    background:rgba(255,255,255,.03);
}
.accordion-title .acc-icon{
    width:26px;height:26px;
    border-radius:50%;
    border:1px solid rgba(0,212,255,.4);
    display:flex;
    align-items:center;
    justify-content:center;
    flex-shrink:0;
    transition:transform .3s ease,background .3s ease;
    font-size:.75rem;
    color:var(--color-accent);
}
.accordion-title .acc-icon i{line-height:1}
.accordion-item.is-active .acc-icon{
    transform:rotate(45deg);
    background:linear-gradient(135deg,#00D4FF,#7E6FFF);
    color:#061A2E;
    border-color:transparent;
}
.accordion-content{
    padding:0 22px 20px;
    font-size:.875rem;
    color:var(--color-text-dim);
    line-height:1.7;
    border-top:1px solid rgba(255,255,255,.06);
    display:none;
}
.accordion-content.is-open{
    display:block;
    animation:accIn .3s ease;
}
@keyframes accIn{
    from{opacity:0;transform:translateY(-6px)}
    to{opacity:1;transform:translateY(0)}
}

/* ── CTA ── */
.cta-section{
    padding:clamp(3.5rem,7vw,5.5rem) 0;
    position:relative;
    text-align:center;
}
.cta-wrap{
    max-width:720px;
    margin:0 auto;
    padding:56px 40px;
    border-radius:20px;
    background:linear-gradient(160deg,rgba(0,212,255,.1),rgba(126,111,255,.06)),rgba(255,255,255,.04);
    backdrop-filter:blur(20px);
    border:1px solid rgba(0,212,255,.2);
    position:relative;
    overflow:hidden;
}
.cta-wrap::before{
    content:"";
    position:absolute;
    top:-100px;left:50%;transform:translateX(-50%);
    width:400px;height:200px;
    background:radial-gradient(ellipse,rgba(0,212,255,.2) 0%,transparent 70%);
    pointer-events:none;
}
.cta-wrap h2{
    font-size:clamp(1.5rem,2.8vw,2.2rem);
    font-weight:700;
    color:#fff;
    margin-bottom:14px;
    letter-spacing:-.01em;
    position:relative;
}
.cta-wrap p{
    color:var(--color-text-dim);
    font-size:1rem;
    max-width:520px;
    margin:0 auto 28px;
    position:relative;
}
.cta-wrap .btn-primary{position:relative}

/* ── Footer ── */
.site-footer{
    background:rgba(6,13,31,.85);
    border-top:1px solid rgba(255,255,255,.05);
    padding:60px 0 32px;
    position:relative;
}
.site-footer::before{
    content:"";
    position:absolute;
    top:0;left:20%;right:20%;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(0,212,255,.3),transparent);
}
.footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1fr;
    gap:40px;
    margin-bottom:40px;
}
.footer-brand{
    font-size:1.2rem;
    font-weight:700;
    color:#fff;
    display:flex;
    align-items:center;
    margin-bottom:12px;
}
.footer-desc{
    font-size:.875rem;
    color:var(--color-text-dim);
    line-height:1.7;
    max-width:300px;
}
.footer-col h4{
    color:#fff;
    font-size:.9375rem;
    font-weight:600;
    margin-bottom:16px;
}
.footer-col ul{
    list-style:none;
    padding:0;
    margin:0;
}
.footer-col li{
    margin-bottom:10px;
    font-size:.875rem;
}
.footer-col a{
    color:var(--color-text-dim);
    transition:color .2s ease;
}
.footer-col a:hover{
    color:var(--color-accent);
}
.footer-copyright{
    text-align:center;
    padding-top:24px;
    border-top:1px solid rgba(255,255,255,.06);
    font-size:.8125rem;
    color:var(--color-text-faint);
}
.footer-copyright span{
    color:var(--color-text-dim);
    font-weight:500;
}

/* ── Responsive ── */
@media (max-width:1024px){
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .process-steps{grid-template-columns:repeat(2,1fr);gap:28px 16px}
    .process-steps::before{display:none}
    .step-dot{width:56px;height:56px;font-size:18px}
    .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
    .nav-center,.nav-right{display:none}
    .nav-toggle{display:flex}
    .nav-center.is-open,.nav-right.is-open{
        display:flex;
        flex-direction:column;
        align-items:stretch;
        position:absolute;
        top:78px;
        left:14px;
        right:14px;
        background:rgba(6,13,31,.96);
        backdrop-filter:blur(24px);
        border:1px solid rgba(0,212,255,.2);
        border-radius:16px;
        padding:16px;
        gap:10px;
        box-shadow:0 20px 50px rgba(0,0,0,.5);
        z-index:999;
        animation:navIn .28s ease;
    }
    .nav-right.is-open{padding-top:6px}
    @keyframes navIn{
        from{opacity:0;transform:translateY(-8px)}
        to{opacity:1;transform:translateY(0)}
    }
    .nav-card{width:100%;justify-content:flex-start}
    .nav-right .btn-primary{width:100%}
    .category-hero{padding:120px 0 60px;min-height:auto}
    .hero-metrics{gap:12px}
    .metric-badge{padding:12px 18px;min-width:110px}
    .metric-num{font-size:1.3rem}
    .guide-card-img{height:170px}
    .cta-wrap{padding:44px 24px}
}
@media (max-width:520px){
    .container{padding:0 16px}
    .nav-panel{height:64px;padding:0 12px}
    .brand-logo{font-size:.95rem}
    .logo-icon{width:34px;height:34px;font-size:14px}
    .category-hero h1{font-size:1.9rem}
    .hero-sub{font-size:.9375rem;line-height:1.7}
    .hero-actions{flex-direction:column;width:100%}
    .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%}
    .hero-metrics{flex-direction:column;width:100%;margin-top:36px}
    .metric-badge{width:100%;min-width:auto}
    .breadcrumb-bar a,.breadcrumb-bar span{font-size:.75rem;padding:3px 9px}
    .stats-grid{grid-template-columns:1fr;gap:14px}
    .process-steps{grid-template-columns:1fr;gap:32px 0}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .section-head p{font-size:.875rem}
    .guide-card-body{padding:22px}
    .feature-card{padding:26px 22px}
    .accordion-title{font-size:.875rem;padding:16px 18px}
    .accordion-content{padding:0 18px 18px}
}

/* roulang page: article */
:root {
            --color-bg: #060D1F;
            --color-bg-2: #0B1D3A;
            --color-primary: #00D4FF;
            --color-secondary: #7E6FFF;
            --color-success: #36F1B2;
            --color-warning: #FFB454;
            --color-text: #F2F7FF;
            --color-text-dim: rgba(242, 247, 255, 0.62);
            --color-border: rgba(255, 255, 255, 0.08);
            --radius-lg: 20px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.28);
            --shadow-glow: 0 0 0 4px rgba(0, 212, 255, 0.12), 0 18px 40px rgba(0, 212, 255, 0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background: linear-gradient(135deg, #060D1F 0%, #0B1D3A 55%, #071227 100%);
            background-attachment: fixed;
            color: var(--color-text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
            z-index: 0;
        }
        body::after {
            content: "";
            position: fixed;
            top: -200px;
            right: -200px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(126, 111, 255, 0.2) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            color: #A6E9FF;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #FFFFFF;
        }
        main {
            position: relative;
            z-index: 1;
        }
        .container,
        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 14px 2%;
            pointer-events: none;
        }
        .nav-panel {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: rgba(6, 13, 31, 0.78);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-radius: 18px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(0, 212, 255, 0.35);
            box-shadow: 0 16px 44px rgba(0, 0, 0, 0.4);
            padding: 10px 18px;
            pointer-events: auto;
            position: relative;
        }
        .nav-left {
            flex-shrink: 0;
            display: flex;
            align-items: center;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 4px 0;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-text);
            letter-spacing: 0.01em;
        }
        .brand-logo:hover {
            color: #FFFFFF;
        }
        .logo-icon {
            display: inline-flex;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, #00D4FF, #7E6FFF);
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #061A2E;
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.35);
            flex-shrink: 0;
        }
        .logo-text {
            white-space: nowrap;
        }
        .nav-center {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 auto;
        }
        .nav-card {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid transparent;
            color: var(--color-text-dim);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            line-height: 1;
            white-space: nowrap;
        }
        .nav-card i {
            font-size: 0.9rem;
            opacity: 0.85;
        }
        .nav-card:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(0, 212, 255, 0.4);
            color: #FFFFFF;
            box-shadow: 0 0 14px rgba(0, 212, 255, 0.12);
        }
        .nav-card.active {
            background: rgba(0, 212, 255, 0.1);
            border-color: rgba(0, 212, 255, 0.45);
            color: #FFFFFF;
            box-shadow: inset 0 -2px 0 rgba(0, 212, 255, 0.7), 0 0 12px rgba(0, 212, 255, 0.08);
        }
        .nav-right {
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 10px;
            padding: 10px;
            cursor: pointer;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: var(--transition);
        }
        .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);
        }
        .nav-toggle:hover {
            border-color: rgba(0, 212, 255, 0.5);
        }
        @media (max-width: 900px) {
            .nav-center {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 10px;
                right: 10px;
                background: rgba(6, 13, 31, 0.96);
                backdrop-filter: blur(28px);
                border-radius: 16px;
                border: 1px solid rgba(255, 255, 255, 0.1);
                box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
                padding: 14px;
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
                margin: 0;
            }
            .nav-center.open {
                display: flex;
            }
            .nav-card {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-right .btn-primary {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 0.95rem;
            }
            .nav-panel {
                padding: 8px 12px;
                gap: 10px;
            }
            .nav-center {
                left: 6px;
                right: 6px;
            }
        }
        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #00D4FF, #7E6FFF);
            color: #061A2E;
            font-weight: 700;
            font-size: 0.92rem;
            padding: 12px 28px;
            border-radius: 12px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3), 0 4px 18px rgba(0, 212, 255, 0.2);
            text-decoration: none;
            line-height: 1.2;
        }
        .btn-primary:hover {
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 8px 28px rgba(0, 212, 255, 0.4);
            transform: translateY(-2px);
            color: #061A2E;
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-primary.btn-sm {
            padding: 10px 18px;
            font-size: 0.85rem;
            border-radius: 10px;
        }
        .btn-primary.btn-lg {
            padding: 15px 40px;
            font-size: 1rem;
            border-radius: 14px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--color-text);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 11px 24px;
            border-radius: 12px;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            backdrop-filter: blur(12px);
        }
        .btn-ghost:hover {
            border-color: rgba(0, 212, 255, 0.6);
            color: #00D4FF;
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.1);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: scale(0.98);
        }
        a:focus,
        button:focus,
        .btn-primary:focus,
        .btn-ghost:focus,
        .nav-card:focus,
        .nav-toggle:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }
        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            min-height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 140px 24px 64px;
            background: linear-gradient(180deg, rgba(6, 13, 31, 0.35) 0%, rgba(6, 13, 31, 0.85) 100%);
            overflow: hidden;
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.55;
            z-index: -1;
            transform: scale(1.05);
        }
        .article-hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, #060D1F 0%, rgba(6, 13, 31, 0.3) 60%, rgba(6, 13, 31, 0.6) 100%);
        }
        .article-hero-inner {
            text-align: center;
            max-width: 820px;
            margin: 0 auto;
        }
        .article-hero .breadcrumb-title {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 8px;
            color: #FFFFFF;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .article-hero .hero-desc {
            color: var(--color-text-dim);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto;
        }
        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: inline-flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 30px;
            font-size: 0.82rem;
            color: var(--color-text-dim);
            backdrop-filter: blur(18px);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: #A6E9FF;
        }
        .breadcrumb a:hover {
            color: #FFFFFF;
        }
        .breadcrumb .sep {
            opacity: 0.5;
        }
        .breadcrumb .current {
            color: var(--color-text);
            max-width: 240px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        /* ===== Article Section ===== */
        .article-section {
            padding: clamp(3rem, 6vw, 4.5rem) 0 1rem;
        }
        .article-layout {
            max-width: 860px;
            margin: 0 auto;
        }
        .article-detail {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03));
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.1);
            padding: clamp(1.8rem, 4vw, 3rem);
            position: relative;
        }
        .article-detail::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.5), transparent);
        }
        .article-detail h1 {
            font-size: clamp(1.8rem, 3.6vw, 2.4rem);
            line-height: 1.35;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin: 0 0 18px;
            color: #FFFFFF;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            padding-bottom: 22px;
            margin-bottom: 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--color-text-dim);
            font-size: 0.85rem;
            font-variant-numeric: tabular-nums;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--color-primary);
            font-size: 0.85rem;
        }
        .article-meta .meta-cat a {
            color: var(--color-primary);
            font-weight: 600;
        }
        /* ===== Article Body ===== */
        .article-body {
            font-size: 0.99rem;
            line-height: 1.8;
            color: rgba(242, 247, 255, 0.9);
        }
        .article-body p {
            margin: 0 0 24px;
        }
        .article-body h2,
        .article-body h3 {
            color: #FFFFFF;
            font-weight: 700;
            margin: 32px 0 16px;
            line-height: 1.4;
            letter-spacing: -0.01em;
        }
        .article-body h2 {
            font-size: 1.45rem;
            padding-left: 14px;
            border-left: 4px solid var(--color-primary);
        }
        .article-body h3 {
            font-size: 1.2rem;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 24px;
            padding-left: 22px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body li::marker {
            color: var(--color-primary);
        }
        .article-body blockquote {
            border-left: 4px solid var(--color-primary);
            background: rgba(255, 255, 255, 0.04);
            padding: 18px 22px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-dim);
            font-style: normal;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            max-width: 100%;
            height: auto;
            margin: 20px 0;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: block;
        }
        .article-body a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: #FFFFFF;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.9rem;
            overflow-x: auto;
            display: block;
        }
        .article-body th,
        .article-body td {
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 10px 14px;
            text-align: left;
            background: rgba(255, 255, 255, 0.02);
        }
        .article-body th {
            background: rgba(0, 212, 255, 0.08);
            font-weight: 700;
            color: #FFFFFF;
        }
        .article-body code {
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 8px;
            border-radius: 6px;
            font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
            font-size: 0.88em;
            color: var(--color-primary);
        }
        .article-body pre {
            background: rgba(0, 0, 0, 0.4);
            padding: 18px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            border: 1px solid rgba(255, 255, 255, 0.08);
            margin: 24px 0;
        }
        .article-body pre code {
            background: none;
            padding: 0;
            color: #A6E9FF;
        }
        /* ===== Article Prev/Next ===== */
        .article-prev-next {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: space-between;
            align-items: center;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .article-prev-next a {
            min-width: 160px;
            justify-content: center;
        }
        /* ===== Empty State ===== */
        .article-empty {
            text-align: center;
            padding: 80px 20px;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(18px);
        }
        .article-empty .empty-icon {
            font-size: 3rem;
            color: rgba(255, 255, 255, 0.25);
            margin-bottom: 18px;
        }
        .article-empty h2 {
            color: #FFFFFF;
            font-size: 1.5rem;
            margin-bottom: 12px;
        }
        .article-empty p {
            color: var(--color-text-dim);
            margin-bottom: 26px;
        }
        /* ===== Related Section ===== */
        .related-section {
            padding: clamp(3rem, 6vw, 4.5rem) 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 42px;
        }
        .section-head h2 {
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.02em;
            margin-bottom: 10px;
        }
        .section-head p {
            color: var(--color-text-dim);
            font-size: 0.92rem;
        }
        .related-grid .columns {
            margin-bottom: 24px;
        }
        .related-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            text-decoration: none;
            color: var(--color-text);
            backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.12), 0 18px 40px rgba(0, 212, 255, 0.1);
            border-color: rgba(0, 212, 255, 0.3);
            color: #FFFFFF;
        }
        .related-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: rgba(0, 0, 0, 0.3);
        }
        .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .related-img img {
            transform: scale(1.05);
        }
        .related-img::after {
            content: "";
            position: absolute;
            inset: 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 0;
            pointer-events: none;
        }
        .related-body {
            padding: 18px 20px 22px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .related-meta {
            margin-bottom: 4px;
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(54, 241, 178, 0.15);
            color: var(--color-success);
            border: 1px solid rgba(54, 241, 178, 0.25);
            letter-spacing: 0.02em;
        }
        .badge.cyan {
            background: rgba(0, 212, 255, 0.12);
            color: var(--color-primary);
            border-color: rgba(0, 212, 255, 0.25);
        }
        .related-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0;
            line-height: 1.4;
        }
        .related-body p {
            font-size: 0.87rem;
            color: var(--color-text-dim);
            margin: 0;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        /* ===== CTA Section ===== */
        .cta-section {
            padding: clamp(2rem, 4vw, 3rem) 0 64px;
        }
        .cta-card {
            position: relative;
            text-align: center;
            padding: clamp(2.5rem, 5vw, 4rem) 24px;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(126, 111, 255, 0.12));
            border: 1px solid rgba(0, 212, 255, 0.25);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.1);
        }
        .cta-card::before {
            content: "";
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.15), transparent 70%);
            pointer-events: none;
        }
        .cta-card h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-card p {
            color: var(--color-text-dim);
            font-size: 1rem;
            margin-bottom: 28px;
            position: relative;
        }
        /* ===== Footer ===== */
        .site-footer {
            position: relative;
            z-index: 1;
            background: rgba(3, 8, 20, 0.92);
            border-top: 1px solid rgba(0, 212, 255, 0.12);
            padding: 60px 0 28px;
            backdrop-filter: blur(20px);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            font-size: 1.1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .footer-desc {
            font-size: 0.85rem;
            color: var(--color-text-dim);
            line-height: 1.7;
            margin: 0;
            max-width: 260px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: var(--color-text-dim);
            font-size: 0.85rem;
        }
        .footer-col ul a:hover {
            color: var(--color-primary);
        }
        .footer-copyright {
            text-align: center;
            font-size: 0.8rem;
            color: rgba(242, 247, 255, 0.35);
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-copyright span {
            color: rgba(242, 247, 255, 0.55);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .article-prev-next {
                flex-direction: column;
                align-items: stretch;
            }
            .article-prev-next a {
                width: 100%;
            }
        }
        /* ===== Foundation overrides ===== */
        .grid-container {
            max-width: 1200px;
        }
        .row {
            max-width: 1200px;
            margin: 0 auto;
        }
        .columns,
        .column {
            padding-left: 12px;
            padding-right: 12px;
        }
        .button {
            font-family: inherit;
        }
        /* ===== Media queries ===== */
        @media (max-width: 640px) {
            body {
                font-size: 15px;
            }
            .article-hero {
                min-height: 240px;
                padding: 120px 16px 48px;
            }
            .article-hero .breadcrumb-title {
                font-size: 1.5rem;
            }
            .article-detail {
                padding: 1.4rem 1.1rem;
                border-radius: 16px;
            }
            .article-body {
                font-size: 0.94rem;
            }
            .article-body h2 {
                font-size: 1.2rem;
            }
            .article-body h3 {
                font-size: 1.05rem;
            }
            .article-meta {
                gap: 10px;
                font-size: 0.78rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 7px 14px;
            }
            .related-body h3 {
                font-size: 0.95rem;
            }
            .cta-card {
                padding: 2rem 18px;
            }
            .cta-card h2 {
                font-size: 1.4rem;
            }
        }
        @media (min-width: 641px) and (max-width: 1024px) {
            .article-hero {
                min-height: 270px;
                padding: 130px 20px 56px;
            }
            .container,
            .grid-container {
                padding-left: 18px;
                padding-right: 18px;
            }
        }
        @media (min-width: 1025px) {
            .related-grid .columns.large-4 {
                flex: 0 0 33.3333%;
                max-width: 33.3333%;
            }
        }