:root {
    --bg: #fff8f1;
    --surface: #ffffff;
    --surface-soft: #fff0e6;
    --brand: #f47449;
    --brand-dark: #d84d2c;
    --ink: #26304a;
    --muted: #667085;
    --line: #f0ded2;
    --shadow: 0 20px 60px rgba(63, 40, 28, .12);
    --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--ink);
    background: linear-gradient(180deg, #fff7ef 0%, #fffaf6 40%, #ffffff 100%);
    line-height: 1.72;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand-dark); }
img, video { max-width: 100%; display: block; }
button, input { font: inherit; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 248, 241, .94);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
}
.topbar, .main-nav, .search-shell, .site-main, .footer-grid, .copyright {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    padding: 16px 0 10px;
}
.brand-lockup, .footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}
.brand-lockup img, .footer-logo img {
    border-radius: 14px;
    box-shadow: 0 10px 28px rgba(244, 116, 73, .18);
}
.brand-lockup strong { display: block; font-size: 22px; letter-spacing: .02em; }
.brand-lockup em { display: block; font-style: normal; color: var(--muted); font-size: 13px; margin-top: -4px; }
.domain-pill {
    padding: 8px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
    color: var(--muted);
    font-size: 14px;
}
.main-nav {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 6px 0 12px;
}
.main-nav a {
    white-space: nowrap;
    padding: 9px 14px;
    border-radius: 999px;
    color: #43506a;
    background: rgba(255, 255, 255, .7);
    border: 1px solid transparent;
}
.main-nav a.active, .main-nav a:hover {
    background: var(--surface);
    border-color: var(--line);
    color: var(--brand-dark);
    box-shadow: 0 8px 20px rgba(244, 116, 73, .12);
}
.search-shell {
    padding: 0 0 14px;
}
.search-shell label {
    display: block;
    font-weight: 700;
    margin-bottom: 6px;
}
.search-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
}
.search-row input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 12px 14px;
    background: var(--surface);
    outline: none;
}
.search-row button, .btn, .action-row button, .share-list button {
    border: 0;
    border-radius: 16px;
    padding: 12px 16px;
    color: #fff;
    background: var(--brand);
    cursor: pointer;
    transition: .2s transform ease, .2s box-shadow ease, .2s background ease;
}
.search-row button:hover, .btn:hover, .action-row button:hover, .share-list button:hover {
    transform: translateY(-1px);
    background: var(--brand-dark);
    box-shadow: 0 10px 24px rgba(244, 116, 73, .25);
}
.search-hint {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 13px;
}
.site-main { padding: 28px 0 56px; }
.hero {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 24px;
    align-items: stretch;
    min-height: 390px;
}
.hero-panel, .hero-side, .section-card, .video-card, .author-card, .comment-card, .faq-item, .contact-card, .category-card, .rule-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.hero-panel {
    padding: clamp(28px, 5vw, 56px);
    position: relative;
    overflow: hidden;
}
.hero-panel::before {
    content: "";
    position: absolute;
    width: 300px;
    height: 300px;
    right: -90px;
    top: -90px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(244,116,73,.22), transparent 68%);
}
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--brand-dark);
    font-weight: 800;
    letter-spacing: .02em;
    margin-bottom: 10px;
}
.eyebrow::before {
    content: "";
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--brand);
}
h1, h2, h3 { line-height: 1.24; margin: 0 0 12px; }
h1 { font-size: clamp(32px, 5vw, 58px); letter-spacing: -.04em; }
h2 { font-size: clamp(24px, 3vw, 36px); letter-spacing: -.02em; }
h3 { font-size: 21px; }
.lead { font-size: 18px; color: #4d5872; max-width: 780px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.btn.secondary {
    color: var(--brand-dark);
    background: var(--surface-soft);
    border: 1px solid var(--line);
}
.hero-side {
    padding: 22px;
    display: grid;
    gap: 14px;
}
.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}
.metric {
    border: 1px dashed var(--line);
    border-radius: 18px;
    padding: 16px;
    background: #fffaf6;
}
.metric strong { display: block; font-size: 26px; color: var(--brand-dark); }
.metric span { color: var(--muted); font-size: 13px; }
.breadcrumb {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 14px;
}
.breadcrumb a { color: #59677f; }
.section-block { margin-top: 36px; }
.section-head {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 18px;
    margin-bottom: 16px;
}
.section-head p { margin: 0; color: var(--muted); max-width: 720px; }
.grid-3, .grid-4, .grid-2 {
    display: grid;
    gap: 18px;
}
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.section-card, .category-card, .rule-card { padding: 22px; }
.section-card ul { margin: 12px 0 16px; padding-left: 20px; color: #4e5c75; }
.heat { color: var(--brand-dark); font-weight: 800; }
.more-link { color: var(--brand-dark); font-weight: 800; }
.video-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}
.video-card { overflow: hidden; }
.video-poster {
    position: relative;
    margin: 0;
    aspect-ratio: 16 / 9;
    background: #fff1e7;
    overflow: hidden;
}
.video-poster img, .poster-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.poster-video { position: absolute; inset: 0; opacity: 0; }
.play-badge {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(.86);
    width: 66px;
    height: 66px;
    display: grid;
    place-items: center;
    border-radius: 999px;
    color: #fff;
    background: rgba(244, 116, 73, .92);
    box-shadow: 0 12px 36px rgba(244, 116, 73, .35);
    opacity: 0;
    transition: .22s ease;
}
.video-card:hover .play-badge, .video-card.is-hover .play-badge { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-card:hover .video-poster img { transform: scale(1.035); }
.video-poster img { transition: .28s transform ease; }
.duration {
    position: absolute;
    right: 12px;
    bottom: 12px;
    padding: 5px 9px;
    border-radius: 999px;
    background: rgba(38, 48, 74, .86);
    color: #fff;
    font-size: 13px;
}
.video-body { padding: 20px; }
.video-body p { color: #536078; margin: 0 0 12px; }
.meta-line, .stat-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    color: var(--muted);
    font-size: 14px;
    margin: 8px 0;
}
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.tag-row span {
    padding: 5px 9px;
    border-radius: 999px;
    background: var(--surface-soft);
    color: var(--brand-dark);
    font-size: 13px;
    font-weight: 700;
}
.action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 16px 0 10px;
}
.action-row button {
    background: #fff5ed;
    color: var(--brand-dark);
    border: 1px solid var(--line);
    padding: 8px 10px;
    border-radius: 12px;
}
.action-row button.is-done { background: var(--brand); color: #fff; }
.author-card, .comment-card, .faq-item, .contact-card { padding: 20px; }
.author-card strong { display: block; font-size: 20px; }
.author-card .role { color: var(--brand-dark); font-weight: 800; }
.author-meta { display: flex; gap: 12px; color: var(--muted); flex-wrap: wrap; }
.comment-card blockquote { margin: 0; color: #47536b; }
.comment-card footer { margin-top: 12px; color: var(--muted); font-size: 14px; }
.faq-item summary { cursor: pointer; font-weight: 800; font-size: 17px; }
.faq-item p { margin-bottom: 0; color: #526078; }
.contact-card strong { display: block; color: var(--brand-dark); margin-bottom: 8px; }
.share-list { display: flex; flex-wrap: wrap; gap: 10px; }
.share-list button { background: #2f3a58; }
.audit-box {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(135deg, #fff, #fff1e8);
    padding: 22px;
    margin-top: 18px;
}
.audit-box ul { margin: 0; padding-left: 20px; }
.site-footer {
    background: #29324a;
    color: #f9efe8;
    padding: 42px 0 22px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 220px 1fr 1fr;
    gap: 24px;
    align-items: start;
}
.site-footer a { color: #ffd2bd; }
.site-footer h2 { font-size: 20px; color: #fff; }
.site-footer p { color: #f2d9cb; margin-top: 0; }
.copyright {
    border-top: 1px solid rgba(255,255,255,.14);
    margin-top: 24px;
    padding-top: 18px;
    color: #dfc7ba;
    font-size: 14px;
}
@media (max-width: 900px) {
    .hero, .video-grid, .grid-2, .grid-3, .grid-4, .footer-grid { grid-template-columns: 1fr; }
    .topbar { align-items: flex-start; flex-direction: column; }
    .section-head { align-items: flex-start; flex-direction: column; }
    .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
    .metric-grid, .search-row { grid-template-columns: 1fr; }
    .brand-lockup span { display: none; }
    .site-main { padding-top: 18px; }
    .hero-panel { padding: 24px; }
}