/* roulang page: index */
:root {
    --primary: #EE4D2E;
    --primary-hover: #FF6239;
    --accent: #32C7B0;
    --bg: #0C0C0F;
    --bg-soft: #151518;
    --surface: #1C1B20;
    --surface-hover: #26242B;
    --text: #F2F0EB;
    --muted: #9C98A0;
    --border: rgba(255,255,255,0.08);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 999px;
    --shadow: 0 8px 24px rgba(0,0,0,0.35);
    --shadow-hover: 0 16px 40px rgba(0,0,0,0.5);
    --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, "Segoe UI", sans-serif;
    --section-pad: 80px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary-hover); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
@media (max-width: 640px) {
    .container { padding: 0 16px; }
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #2e2c34; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #3a3742; }

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(15, 15, 18, 0.85);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 20px;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.brand-logo .logo-icon {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--primary), #FF8A3C);
    border-radius: 10px;
    color: #fff;
    font-size: 18px;
    box-shadow: 0 4px 16px rgba(238, 77, 46, 0.35);
}
.brand-logo .logo-text {
    color: var(--text);
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 0.5px;
    line-height: 1.2;
}
.brand-logo .logo-text span { color: var(--primary); }
.nav-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
}
.nav-card-panel {
    display: flex;
    gap: 6px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 6px;
    box-shadow: var(--shadow);
}
.nav-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    border-radius: 10px;
    color: var(--muted);
    font-weight: 500;
    font-size: 14px;
    transition: 0.2s ease;
}
.nav-item i { font-size: 14px; }
.nav-item:hover { background: var(--surface-hover); color: var(--text); }
.nav-item.active { background: var(--accent); color: #0C0C0F; font-weight: 600; }
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.login-link { color: var(--muted); font-size: 14px; font-weight: 500; }
.login-link:hover { color: var(--text); }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 18px rgba(238, 77, 46, 0.35);
}
.btn-primary:hover { background: var(--primary-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 24px rgba(238, 77, 46, 0.45); }
.btn-primary:active { transform: scale(0.98); }
.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); background: rgba(238, 77, 46, 0.06); }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-accent { background: var(--accent); color: #0C0C0F; }
.btn-accent:hover { background: #3dd9c0; color: #0C0C0F; }

.burger {
    display: none;
    background: var(--surface);
    border: 1px solid var(--border);
    width: 42px;
    height: 42px;
    border-radius: 10px;
    color: var(--text);
    font-size: 16px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* Mobile Nav */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #111114;
    border-bottom: 1px solid var(--border);
    padding: 20px 16px;
    z-index: 999;
    flex-direction: column;
    gap: 10px;
}
.mobile-nav.open { display: flex; }
.mobile-nav .nav-item {
    padding: 14px 18px;
    font-size: 15px;
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
}
.mobile-nav .nav-item.active { background: var(--accent); color: #0C0C0F; }
.mobile-nav .btn { width: 100%; margin-top: 8px; }

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 620px;
    display: flex;
    align-items: center;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, rgba(12,12,15,0.92) 20%, rgba(12,12,15,0.65) 55%, rgba(12,12,15,0.35) 100%);
}
.hero::after {
    content: '';
    position: absolute;
    top: -140px;
    right: -80px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(238,77,46,0.25), transparent 70%);
    pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 720px; padding: 120px 0; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(238,77,46,0.12);
    border: 1px solid rgba(238,77,46,0.3);
    color: var(--primary-hover);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.3px;
}
.hero-badge i { font-size: 12px; }
.hero h1 {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.16;
    letter-spacing: 1px;
    color: var(--text);
    margin-bottom: 20px;
}
.hero h1 .text-fire { color: var(--primary); }
.hero h1 .text-accent { color: var(--accent); }
.hero-sub {
    font-size: 18px;
    line-height: 1.75;
    color: var(--muted);
    max-width: 560px;
    margin-bottom: 36px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
    display: flex;
    gap: 34px;
    margin-top: 48px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}
.stat-item { display: flex; flex-direction: column; }
.stat-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.2;
}
.stat-num span { color: var(--accent); }
.stat-label { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ===== Section Common ===== */
.section { padding: var(--section-pad) 0; }
.section-head { margin-bottom: 48px; max-width: 720px; }
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    font-weight: 700;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 10px;
}
.section-title { font-size: 36px; font-weight: 800; line-height: 1.3; color: var(--text); }
.section-title .mark { color: var(--primary); }
.section-desc { color: var(--muted); font-size: 16px; line-height: 1.7; margin-top: 12px; }
.section-divider { border: none; border-top: 1px solid var(--border); margin: 0; }

/* ===== Pricing / 权益对比 ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.pricing-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(255,255,255,0.15); }
.pricing-card.featured {
    border: 1px solid var(--primary);
    background: linear-gradient(180deg, rgba(238,77,46,0.06), var(--surface) 60%);
    box-shadow: 0 0 0 1px rgba(238,77,46,0.2), var(--shadow);
}
.pricing-card.featured:hover { box-shadow: 0 0 0 1px rgba(238,77,46,0.3), var(--shadow-hover); }
.featured-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 18px;
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.pricing-name { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.pricing-sub { font-size: 13px; color: var(--muted); margin-bottom: 20px; }
.pricing-price { margin-bottom: 22px; }
.pricing-price .amount { font-size: 42px; font-weight: 800; color: var(--text); }
.pricing-price .currency { font-size: 18px; color: var(--muted); font-weight: 500; }
.pricing-price .period { font-size: 14px; color: var(--muted); }
.pricing-features { flex: 1; display: flex; flex-direction: column; gap: 10px; margin-bottom: 26px; }
.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: #CFCBC4;
    line-height: 1.5;
}
.pricing-features li i { font-size: 14px; margin-top: 3px; }
.pricing-features li .fa-check { color: var(--accent); }
.pricing-features li .fa-xmark { color: #6b676f; }
.pricing-features li.off { color: #6b676f; }
.pricing-cta { width: 100%; }

/* ===== Timeline / 等级亮点 ===== */
.timeline-section { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.timeline { position: relative; max-width: 960px; margin: 0 auto; padding-left: 20px; }
.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--accent), transparent);
}
.timeline-item { position: relative; padding-left: 44px; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
    content: '';
    position: absolute;
    left: -7px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-soft);
    border: 2px solid var(--accent);
    box-shadow: 0 0 12px rgba(50, 199, 176, 0.4);
    z-index: 1;
}
.timeline-item.level-hot::before { border-color: var(--primary); box-shadow: 0 0 12px rgba(238,77,46,0.4); }
.timeline-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 26px 28px;
    transition: all 0.3s ease;
}
.timeline-card:hover { background: var(--surface-hover); transform: translateX(4px); }
.timeline-level { font-size: 12px; font-weight: 700; letter-spacing: 1px; color: var(--accent); text-transform: uppercase; margin-bottom: 6px; }
.timeline-item.level-hot .timeline-level { color: var(--primary); }
.timeline-card h3 { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.timeline-card p { font-size: 14px; color: var(--muted); line-height: 1.7; margin-bottom: 14px; }
.timeline-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.timeline-tags span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: rgba(50,199,176,0.08);
    border: 1px solid rgba(50,199,176,0.2);
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: var(--radius-full);
}
.timeline-item.level-hot .timeline-tags span {
    background: rgba(238,77,46,0.08);
    border-color: rgba(238,77,46,0.25);
    color: var(--primary-hover);
}

/* ===== Content Preview / 专属内容 ===== */
.preview-scroll {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.preview-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}
.preview-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(255,255,255,0.14); }
.preview-cover { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.preview-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.preview-card:hover .preview-cover img { transform: scale(1.04); }
.preview-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(12,12,15,0.7));
}
.preview-tag {
    position: absolute;
    left: 14px;
    top: 14px;
    z-index: 2;
    background: rgba(12,12,15,0.75);
    backdrop-filter: blur(8px);
    color: var(--text);
    font-size: 11px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255,255,255,0.15);
}
.preview-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.preview-body h3 { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 8px; line-height: 1.45; }
.preview-body p { font-size: 13px; color: var(--muted); line-height: 1.65; flex: 1; }
.preview-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 18px; }
.preview-footer .meta { font-size: 12px; color: var(--muted); }
.preview-footer .more { font-size: 13px; font-weight: 600; color: var(--accent); display: inline-flex; align-items: center; gap: 4px; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 820px; margin: 0 auto; }
.accordion { background: transparent; border: none; }
.accordion-item { background: transparent; border: none; border-bottom: 1px solid var(--border); }
.accordion-title {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 22px 0 !important;
    color: var(--text) !important;
    font-size: 16px !important;
    font-weight: 600 !important;
    background: transparent !important;
    border: none !important;
    line-height: 1.5 !important;
    min-height: 48px;
    cursor: pointer;
    position: relative;
}
.accordion-title:hover { color: var(--primary) !important; }
.accordion-title .q-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: rgba(50,199,176,0.1);
    color: var(--accent);
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 14px;
    flex-shrink: 0;
}
.accordion-title[aria-expanded="true"] .q-icon { background: var(--primary); color: #fff; }
.accordion-title::after {
    content: '+' !important;
    position: absolute;
    right: 0;
    font-size: 22px;
    font-weight: 400;
    color: var(--muted);
    transition: transform 0.2s ease;
}
.accordion-title[aria-expanded="true"]::after { content: '−' !important; color: var(--primary); }
.accordion-content {
    background: transparent !important;
    border: none !important;
    padding: 0 0 22px 42px !important;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.75;
}
.accordion-content p { max-width: 660px; }

/* ===== CTA / 开通会员 ===== */
.cta-section { background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; position: relative; }
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(12,12,15,0.96) 30%, rgba(12,12,15,0.8) 70%, rgba(12,12,15,0.6));
}
.cta-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 50px; align-items: center; }
.cta-left { padding-right: 40px; }
.cta-left h2 { font-size: 38px; font-weight: 800; color: var(--text); line-height: 1.3; margin-bottom: 16px; }
.cta-left h2 .mark { color: var(--primary); }
.cta-left p { color: var(--muted); font-size: 16px; line-height: 1.75; margin-bottom: 28px; }
.cta-points { display: flex; flex-direction: column; gap: 12px; margin-bottom: 30px; }
.cta-points li { display: flex; align-items: center; gap: 10px; color: #D5D0C8; font-size: 15px; }
.cta-points li i { color: var(--accent); font-size: 15px; }
.cta-form-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 34px;
    box-shadow: var(--shadow-hover);
}
.cta-form-card h3 { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.cta-form-card .form-sub { font-size: 13px; color: var(--muted); margin-bottom: 22px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-control {
    width: 100%;
    padding: 13px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 14px;
    transition: all 0.2s ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(238,77,46,0.15);
}
.form-control::placeholder { color: #5f5b63; }
.btn-block { width: 100%; }
.form-note { font-size: 12px; color: var(--muted); text-align: center; margin-top: 12px; }

/* ===== News / 最新信息 ===== */
.news-section { background: var(--bg); }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-card {
    display: flex;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
}
.news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: rgba(255,255,255,0.13); }
.news-thumb { width: 160px; flex-shrink: 0; position: relative; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-thumb::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(28,27,32,0.2)); }
.news-content { flex: 1; padding: 24px 28px; display: flex; flex-direction: column; }
.news-content h3 { font-size: 18px; font-weight: 700; color: var(--text); line-height: 1.4; margin-bottom: 8px; }
.news-content h3 a { color: var(--text); }
.news-content h3 a:hover { color: var(--primary); }
.news-summary {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
}
.news-meta { display: flex; align-items: center; gap: 18px; font-size: 13px; color: var(--muted); margin-top: auto; }
.news-cat { display: inline-flex; align-items: center; gap: 5px; background: rgba(238,77,46,0.08); color: var(--primary-hover); padding: 3px 12px; border-radius: var(--radius-full); font-weight: 600; font-size: 12px; }
.news-date { display: inline-flex; align-items: center; gap: 5px; }
.news-link { margin-left: auto; color: var(--accent); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.news-link:hover { color: var(--text); }
.empty-state {
    background: var(--surface);
    border: 1px dashed var(--border);
    border-radius: var(--radius-md);
    padding: 48px 24px;
    text-align: center;
    color: var(--muted);
}
.empty-state i { font-size: 36px; margin-bottom: 12px; color: #5f5b63; display: block; }

/* ===== Footer ===== */
.site-footer { background: #08080A; border-top: 1px solid var(--border); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer-brand .brand-logo { margin-bottom: 14px; }
.footer-brand p { color: var(--muted); font-size: 14px; line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--muted); font-size: 14px; transition: all 0.2s ease; }
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.footer-contact li i { color: var(--accent); margin-top: 4px; }
.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 20px 0;
    text-align: center;
    color: var(--muted);
    font-size: 13px;
}
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--primary); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .preview-scroll { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { gap: 16px; }
    .pricing-card { padding: 24px 20px; }
    .cta-inner { grid-template-columns: 1fr; gap: 36px; }
    .cta-left { padding-right: 0; }
    .hero h1 { font-size: 44px; }
}
@media (max-width: 768px) {
    .section { --section-pad: 48px; }
    .header-inner { gap: 10px; }
    .nav-card-panel { display: none; }
    .burger { display: flex; }
    .header-actions .login-link, .header-actions .btn:not(.btn-accent) { display: none; }
    .hero { min-height: 520px; }
    .hero-content { padding: 80px 0; }
    .hero h1 { font-size: 36px; }
    .hero-sub { font-size: 16px; }
    .hero-stats { gap: 20px; flex-wrap: wrap; }
    .pricing-grid { grid-template-columns: 1fr; gap: 20px; }
    .pricing-card.featured { order: -1; }
    .timeline { padding-left: 12px; }
    .timeline-item { padding-left: 36px; }
    .timeline-card { padding: 20px; }
    .news-thumb { width: 100px; }
    .news-content { padding: 16px 18px; }
    .news-meta { flex-wrap: wrap; gap: 10px; }
    .news-link { margin-left: 0; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .cta-form-card { padding: 26px; }
    .section-title { font-size: 28px; }
    .cta-left h2 { font-size: 30px; }
}
@media (max-width: 520px) {
    .hero h1 { font-size: 30px; }
    .hero-cta .btn { width: 100%; }
    .hero-stats { flex-direction: column; gap: 14px; }
    .preview-scroll { grid-template-columns: 1fr; }
    .news-card { flex-direction: column; }
    .news-thumb { width: 100%; height: 120px; }
    .btn-lg { width: 100%; }
    .header-actions .btn { padding: 10px 18px; font-size: 13px; }
}
.fade-up { opacity: 0; transform: translateY(20px); transition: opacity 0.4s ease, transform 0.4s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* roulang page: article */
:root {
  --primary: #EE4D2E;
  --primary-hover: #FF6239;
  --accent: #32C7B0;
  --bg: #0C0C0F;
  --bg-soft: #151518;
  --surface: #1C1B20;
  --surface-hover: #26242B;
  --text: #F2F0EB;
  --muted: #9C98A0;
  --border: rgba(255, 255, 255, 0.08);
  --border-bright: rgba(255, 255, 255, 0.14);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --font-num: "Inter", "Segoe UI", var(--font-cn);
}

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

html {
  scroll-behavior: smooth;
}

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

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 44px 44px;
  z-index: 0;
  pointer-events: none;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-hover);
}

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

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 15, 18, 0.85);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(238, 77, 46, 0.25), rgba(50, 199, 176, 0.18));
  border: 1px solid var(--border-bright);
  color: var(--primary);
  border-radius: 10px;
  font-size: 17px;
}

.logo-text {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text);
}

.logo-text span {
  color: var(--primary);
}

.nav-wrapper {
  display: flex;
  flex: 1;
  justify-content: center;
  padding: 0 12px;
}

.nav-card-panel {
  display: flex;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.nav-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  transition: all 0.2s ease;
}

.nav-item i {
  font-size: 13px;
}

.nav-item:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.nav-item.active {
  background: rgba(50, 199, 176, 0.15);
  color: var(--accent);
  border: 1px solid rgba(50, 199, 176, 0.25);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  padding: 14px 28px;
  line-height: 1.2;
  cursor: pointer;
  transition: all 0.22s ease;
  border: none;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 3px solid rgba(238, 77, 46, 0.55);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(238, 77, 46, 0.25);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  box-shadow: 0 6px 28px rgba(238, 77, 46, 0.4);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: scale(0.98);
}

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

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(238, 77, 46, 0.06);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: scale(0.98);
}

.btn-sm {
  padding: 10px 22px;
  font-size: 13px;
}

.article-main {
  padding: 60px 0 40px;
  position: relative;
  z-index: 1;
}

.article-wrap {
  max-width: 900px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

.breadcrumb i {
  font-size: 11px;
  color: rgba(156, 152, 160, 0.6);
}

.breadcrumb .current {
  color: var(--text);
  font-weight: 500;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-header {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
}

.article-header h1 {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text);
  margin-bottom: 18px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.meta-item i {
  color: var(--accent);
  font-size: 13px;
}

.meta-category {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  background: rgba(50, 199, 176, 0.1);
  border: 1px solid rgba(50, 199, 176, 0.2);
  color: var(--accent);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
}

.meta-category:hover {
  background: rgba(50, 199, 176, 0.2);
  color: var(--accent);
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
}

.article-body p {
  margin: 0 0 1.4em;
}

.article-body h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 44px 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 22px;
  font-weight: 600;
  margin: 32px 0 14px;
  color: var(--text);
  line-height: 1.45;
}

.article-body h4 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text);
}

.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: var(--primary-hover);
}

.article-body img {
  border-radius: 12px;
  margin: 24px 0;
  box-shadow: var(--shadow-card);
}

.article-body blockquote {
  position: relative;
  margin: 28px 0;
  padding: 20px 24px;
  background: var(--bg-soft);
  border-left: 4px solid var(--primary);
  border-radius: 0 12px 12px 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

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

.article-body code {
  background: #1a1a1f;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 8px;
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 14px;
  color: var(--accent);
}

.article-body pre {
  background: #0a0a0d;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin: 24px 0;
  overflow-x: auto;
}

.article-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--text);
  font-size: 14px;
  line-height: 1.7;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.4em 1.4em;
}

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

.article-body li::marker {
  color: var(--accent);
}

.article-empty {
  text-align: center;
  padding: 80px 30px;
  background: var(--surface);
  border: 1px dashed var(--border-bright);
  border-radius: var(--radius-lg);
}

.article-empty i {
  font-size: 44px;
  color: var(--muted);
  margin-bottom: 20px;
  display: block;
}

.article-empty p {
  color: var(--muted);
  font-size: 18px;
  margin-bottom: 24px;
}

.related-section {
  padding: 80px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}

.section-head {
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.section-head p {
  color: var(--muted);
  font-size: 15px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.related-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.25s ease;
}

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

.related-card a {
  display: block;
  color: var(--text);
}

.related-card a:hover {
  color: var(--text);
}

.related-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-soft);
}

.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.related-body {
  padding: 20px;
}

.related-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 10px;
}

.related-body p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 999px;
  background: rgba(238, 77, 46, 0.12);
  border: 1px solid rgba(238, 77, 46, 0.2);
  color: var(--primary);
}

.relate-footer-center {
  text-align: center;
}

.site-footer {
  background: #09090B;
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 44px;
}

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

.footer-brand p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
}

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

.footer-col a {
  color: var(--muted);
  font-size: 14px;
  transition: color 0.2s ease;
}

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

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

.footer-contact i {
  color: var(--accent);
  font-size: 13px;
  width: 18px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
}

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

.nav-toggle {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  width: 44px;
  height: 44px;
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.nav-toggle:hover {
  background: var(--surface-hover);
}

.nav-toggle:focus-visible {
  outline: 3px solid rgba(50, 199, 176, 0.5);
  outline-offset: 2px;
}

@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-grid .related-card:last-child {
    display: none;
  }
}

@media (max-width: 768px) {
  .header-row {
    flex-wrap: wrap;
    min-height: 64px;
    padding: 8px 0;
  }

  .nav-wrapper {
    order: 3;
    width: 100%;
    padding: 0;
    display: none;
  }

  .nav-wrapper.open {
    display: block;
  }

  .nav-card-panel {
    flex-direction: column;
    border-radius: var(--radius-md);
    padding: 8px;
    width: 100%;
  }

  .nav-item {
    justify-content: center;
    padding: 12px;
    border-radius: 8px;
  }

  .header-cta {
    display: none;
  }

  .header-cta.mobile-visible {
    display: inline-flex;
  }

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

  .article-main {
    padding: 40px 0 30px;
  }

  .article-wrap {
    max-width: 100%;
  }

  .article-header h1 {
    font-size: 28px;
    line-height: 1.35;
  }

  .article-body {
    font-size: 16px;
  }

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

  .related-grid .related-card:last-child {
    display: block;
  }

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

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

  .related-section {
    padding: 40px 0;
  }

  .article-main {
    padding-top: 32px;
  }

  .container {
    padding: 0 16px;
  }
}

@media (max-width: 520px) {
  .logo-text {
    font-size: 18px;
  }

  .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }

  .article-header h1 {
    font-size: 24px;
  }

  .article-meta {
    gap: 12px;
    font-size: 13px;
  }

  .breadcrumb {
    font-size: 13px;
  }

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

  .article-body h3 {
    font-size: 19px;
  }

  .footer-bottom p {
    font-size: 12px;
    padding: 0 16px;
  }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
    --primary: #EE4D2E;
    --primary-hover: #FF6239;
    --primary-soft: rgba(238, 77, 46, 0.12);
    --accent: #32C7B0;
    --accent-soft: rgba(50, 199, 176, 0.12);
    --bg: #0C0C0F;
    --bg-soft: #151518;
    --surface: #1C1B20;
    --surface-hover: #26242B;
    --text: #F2F0EB;
    --muted: #9C98A0;
    --border: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.14);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-pill: 999px;
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
    --container: 1200px;
    --transition: 0.3s ease;
}

/* ===== Reset / 基础 ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Inter", "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

a:hover {
    color: var(--primary-hover);
}

ul,
ol {
    list-style: none;
}

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

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    border-radius: 4px;
}

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

/* ===== 按钮体系 ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    padding: 14px 30px;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 20px rgba(238, 77, 46, 0.25);
    line-height: 1.4;
}

.btn-primary:hover {
    background: var(--primary-hover);
    color: #fff;
    box-shadow: 0 6px 28px rgba(238, 77, 46, 0.4);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--text);
    font-size: 16px;
    font-weight: 500;
    padding: 14px 30px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-light);
    cursor: pointer;
    transition: border-color 0.3s ease, color 0.3s ease, background 0.3s ease, transform 0.2s ease;
    line-height: 1.4;
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary-hover);
    background: rgba(238, 77, 46, 0.04);
    transform: translateY(-1px);
}

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

.btn-sm {
    padding: 10px 22px;
    font-size: 14px;
}

/* ===== 导航面板 ===== */
.nav-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 12px 24px;
    background: rgba(15, 15, 18, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-card-panel {
    max-width: var(--container);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    flex-shrink: 0;
    transition: color 0.3s ease;
}

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

.logo-icon {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), #f59e42);
    color: #fff;
    border-radius: 10px;
    font-size: 17px;
    box-shadow: 0 4px 14px rgba(238, 77, 46, 0.35);
}

.logo-text {
    letter-spacing: 0.5px;
}

.logo-text span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    justify-content: center;
}

.nav-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--muted);
    font-size: 15px;
    font-weight: 500;
    padding: 9px 20px;
    border-radius: 10px;
    background: transparent;
    border: 1px solid transparent;
    transition: all 0.3s ease;
    line-height: 1.4;
}

.nav-item i {
    color: var(--muted);
    transition: color 0.3s ease;
}

.nav-item:hover {
    color: var(--text);
    background: var(--bg-soft);
    border-color: var(--border);
}

.nav-item:hover i {
    color: var(--accent);
}

.nav-item.active {
    background: var(--accent-soft);
    border-color: rgba(50, 199, 176, 0.3);
    color: var(--accent);
}

.nav-item.active i {
    color: var(--accent);
}

.nav-cta {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    font-size: 16px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: border-color 0.3s ease, color 0.3s ease;
}

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

/* ===== Hero 区 ===== */
.category-hero {
    position: relative;
    min-height: 620px;
    display: flex;
    align-items: center;
    padding: 150px 0 80px;
    overflow: hidden;
}

.hero-backdrop {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    will-change: transform;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(12, 12, 15, 0.95) 20%, rgba(12, 12, 15, 0.7) 55%, rgba(12, 12, 15, 0.35) 100%);
}

.hero-glow {
    position: absolute;
    right: -120px;
    top: 10%;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(238, 77, 46, 0.18), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.category-hero-inner {
    position: relative;
    z-index: 2;
    max-width: 760px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 24px;
}

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

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

.breadcrumb span {
    color: var(--text);
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--accent);
    background: var(--accent-soft);
    border: 1px solid rgba(50, 199, 176, 0.25);
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    margin-bottom: 20px;
    text-transform: uppercase;
}

.category-hero-inner h1 {
    font-size: 58px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -1px;
    color: var(--text);
    margin-bottom: 18px;
}

.hero-dot {
    color: var(--primary);
}

.hero-sub {
    font-size: 18px;
    line-height: 1.75;
    color: var(--muted);
    margin-bottom: 32px;
    max-width: 640px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

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

.stat-item {
    background: rgba(28, 27, 32, 0.7);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 14px 22px;
    text-align: center;
    backdrop-filter: blur(6px);
    min-width: 110px;
}

.stat-item strong {
    display: block;
    font-size: 26px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.2;
}

.stat-item span {
    display: block;
    font-size: 13px;
    color: var(--muted);
    margin-top: 4px;
}

/* ===== 区块通用 ===== */
.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--bg-soft);
}

.section-head {
    max-width: 640px;
    margin-bottom: 48px;
}

.section-head.is-center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-head h2 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.5px;
    color: var(--text);
    margin-bottom: 14px;
}

.section-head p {
    font-size: 16px;
    color: var(--muted);
    line-height: 1.75;
}

/* ===== 特性卡片 ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.feature-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 30px 24px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    overflow: hidden;
}

.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 50px;
    height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-soft);
    color: var(--accent);
    border-radius: var(--radius-md);
    font-size: 20px;
    margin-bottom: 22px;
    transition: background 0.3s ease, color 0.3s ease;
}

.feature-card:hover .feature-icon {
    background: var(--primary-soft);
    color: var(--primary);
}

.feature-index {
    position: absolute;
    top: 22px;
    right: 22px;
    font-size: 34px;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.04);
    line-height: 1;
    letter-spacing: -1px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
}

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

/* ===== 赛程速览（票券式） ===== */
.schedule-section {
    padding: 60px 0;
}

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.schedule-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    cursor: default;
}

.schedule-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-light);
}

.schedule-date {
    min-width: 52px;
    text-align: center;
    padding-right: 12px;
    border-right: 1px solid var(--border);
}

.schedule-date strong {
    display: block;
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.1;
}

.schedule-date small {
    font-size: 12px;
    color: var(--muted);
}

.schedule-info h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 3px;
}

.schedule-info p {
    font-size: 12px;
    color: var(--muted);
    margin: 0;
}

.schedule-tag {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-soft);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    white-space: nowrap;
}

/* ===== 场景卡片 ===== */
.scenario-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

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

.scenario-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-light);
}

.scenario-cover {
    height: 160px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.scenario-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(12, 12, 15, 0.85) 100%);
}

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

.scenario-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.scenario-content h3::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    display: inline-block;
}

.scenario-content p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--muted);
    margin: 0;
}

/* ===== 流程时间线 ===== */
.process-wrap {
    position: relative;
    max-width: 820px;
    margin: 0 auto;
}

.process-wrap::before {
    content: "";
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--accent), transparent);
    opacity: 0.4;
}

.process-item {
    position: relative;
    padding: 0 0 42px 80px;
}

.process-item:last-child {
    padding-bottom: 0;
}

.process-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 58px;
    height: 58px;
    background: var(--bg-soft);
    border: 2px solid var(--accent);
    color: var(--accent);
    font-size: 18px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 0 4px var(--bg), 0 4px 16px rgba(50, 199, 176, 0.2);
}

.process-item:nth-child(even) .process-number {
    border-color: var(--primary);
    color: var(--primary);
}

.process-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.process-content:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-hover);
}

.process-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}

.process-content p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--muted);
    margin: 0;
}

/* ===== 内容预览 ===== */
.preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

.preview-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-light);
}

.preview-thumb {
    position: relative;
    height: 190px;
    overflow: hidden;
}

.preview-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.preview-card:hover .preview-thumb img {
    transform: scale(1.04);
}

.preview-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(12, 12, 15, 0.5) 100%);
}

.preview-tag {
    position: absolute;
    left: 14px;
    bottom: 12px;
    z-index: 2;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    background: rgba(238, 77, 46, 0.9);
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    backdrop-filter: blur(4px);
    letter-spacing: 0.5px;
}

.preview-body {
    padding: 22px 22px 24px;
}

.preview-body h3 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--text);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.preview-body p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--muted);
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.preview-meta {
    font-size: 13px;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.preview-meta i {
    color: var(--accent);
}

/* ===== FAQ ===== */
.faq-wrap {
    max-width: 820px;
    margin: 0 auto;
}

.faq-list .accordion {
    background: transparent;
    border: none;
    margin: 0;
}

.faq-list .accordion-item {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border);
    border-radius: 0 !important;
    margin: 0;
}

.faq-list .accordion-title {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    padding: 22px 48px 22px 0;
    background: transparent;
    border: none;
    border-radius: 0;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.faq-list .accordion-title:hover {
    background: transparent;
    color: var(--accent);
}

.faq-q {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 14px;
    font-weight: 800;
    border-radius: 8px;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.faq-list .accordion-item.is-active .faq-q {
    background: var(--primary);
    color: #fff;
}

.faq-list .accordion-title::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    right: 4px;
    font-size: 14px;
    color: var(--muted);
    transition: transform 0.3s ease, color 0.3s ease;
}

.faq-list .accordion-item.is-active .accordion-title::after {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-list .accordion-content {
    background: transparent;
    border: none;
    padding: 0 0 24px 46px;
    font-size: 15px;
    line-height: 1.75;
    color: var(--muted);
    max-width: 700px;
}

.faq-list .accordion-content p {
    margin: 0;
    color: var(--muted);
}

/* ===== CTA 大卡片 ===== */
.cta-section {
    padding: 40px 0 100px;
}

.cta-card {
    position: relative;
    background: linear-gradient(135deg, var(--surface), var(--bg-soft));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    overflow: hidden;
}

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

.cta-card::after {
    content: "";
    position: absolute;
    right: -80px;
    bottom: -120px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(238, 77, 46, 0.12), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-left {
    position: relative;
    z-index: 1;
    flex: 1;
}

.cta-left h2 {
    font-size: 30px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.cta-left p {
    font-size: 16px;
    line-height: 1.75;
    color: var(--muted);
    margin: 0;
    max-width: 480px;
}

.cta-right {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.cta-note {
    font-size: 13px;
    color: var(--muted);
}

/* ===== 页脚 ===== */
.site-footer {
    background: #09090B;
    border-top: 1px solid var(--border);
    padding: 60px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-brand .brand-logo {
    font-size: 22px;
    margin-bottom: 14px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--muted);
    max-width: 300px;
    margin-top: 14px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}

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

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

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

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--muted);
}

.footer-contact li i {
    color: var(--primary);
    width: 16px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--muted);
    margin: 0;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .schedule-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .preview-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .section {
        padding: 48px 0;
    }

    .container {
        padding: 0 16px;
    }

    .nav-wrapper {
        padding: 8px 12px;
    }

    .nav-card-panel {
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 12px;
    }

    .nav-links {
        order: 3;
        flex-basis: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        gap: 6px;
        display: none;
    }

    .nav-links.is-open {
        display: flex;
    }

    .nav-item {
        padding: 8px 14px;
        font-size: 14px;
        white-space: nowrap;
    }

    .brand-logo {
        font-size: 18px;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 15px;
    }

    .nav-cta {
        margin-left: auto;
    }

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

    .category-hero {
        min-height: 540px;
        padding: 120px 0 56px;
    }

    .category-hero-inner h1 {
        font-size: 40px;
    }

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

    .hero-actions {
        margin-bottom: 40px;
    }

    .hero-stats {
        gap: 8px;
    }

    .stat-item {
        padding: 10px 14px;
        min-width: 90px;
    }

    .stat-item strong {
        font-size: 20px;
    }

    .section-head h2 {
        font-size: 28px;
    }

    .process-item {
        padding-left: 64px;
    }

    .process-number {
        width: 46px;
        height: 46px;
        font-size: 15px;
    }

    .process-wrap::before {
        left: 22px;
    }

    .cta-card {
        flex-direction: column;
        padding: 36px 24px;
        gap: 24px;
        text-align: center;
    }

    .cta-left p {
        margin-left: auto;
        margin-right: auto;
    }

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

@media (max-width: 520px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

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

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

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

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

    .hero-sub {
        font-size: 15px;
    }

    .btn-primary,
    .btn-secondary {
        padding: 12px 24px;
        font-size: 15px;
        width: 100%;
        justify-content: center;
    }

    .hero-actions {
        gap: 10px;
        flex-direction: column;
        align-items: stretch;
    }
}