:root {
    --bg: #fffaf7;
    --surface: #ffffff;
    --ink: #24242e;
    --muted: #696978;
    --line: #ece7e2;
    --accent: #ff7a69;
    --accent-deep: #ef5f4f;
    --soft: #eef8ff;
    --shadow: 0 18px 60px rgba(45, 35, 28, 0.10);
    --radius: 26px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    color: var(--ink);
    background: linear-gradient(180deg, #fffaf7 0%, #f8fbff 52%, #ffffff 100%);
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1160px, calc(100% - 36px)); margin: 0 auto; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 250, 247, 0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(236, 231, 226, 0.8);
}
.header-inner { display: flex; align-items: center; gap: 24px; padding: 14px 0 10px; }
.brand-lockup { flex: 0 0 auto; }
.brand-lockup img, .footer-logo { height: auto; }
.main-nav { display: flex; align-items: center; gap: 10px; overflow-x: auto; padding-bottom: 4px; }
.main-nav a {
    white-space: nowrap;
    padding: 9px 12px;
    border-radius: 999px;
    color: #494957;
    font-size: 14px;
}
.main-nav a:hover, .main-nav a.active { background: #fff; color: var(--accent-deep); box-shadow: 0 8px 24px rgba(255, 122, 105, 0.12); }
.search-wrap { padding: 0 0 13px; }
.search-form { display: flex; gap: 10px; max-width: 720px; }
.search-form input {
    flex: 1;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 13px 18px;
    background: var(--surface);
    font-size: 15px;
    outline: none;
}
.search-form input:focus { border-color: rgba(255, 122, 105, 0.6); box-shadow: 0 0 0 4px rgba(255,122,105,0.12); }
.search-form button, .btn, .btn-secondary {
    border: 0;
    border-radius: 999px;
    padding: 13px 20px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 14px 30px rgba(255, 122, 105, 0.24);
}
.btn-secondary { background: #ffffff; color: var(--accent-deep); border: 1px solid #ffd8d1; box-shadow: none; }
.search-hint { min-height: 24px; margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.hero { padding: 72px 0 48px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr); gap: 42px; align-items: center; }
.eyebrow { color: var(--accent-deep); font-weight: 800; letter-spacing: .04em; }
h1, h2, h3, h4, h5, h6 { line-height: 1.22; margin: 0 0 14px; }
h1 { font-size: clamp(36px, 6vw, 64px); letter-spacing: -0.04em; }
h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.03em; }
h3 { font-size: 21px; }
p { margin: 0 0 14px; color: var(--muted); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0; }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 24px; }
.stat { background: rgba(255,255,255,.75); border: 1px solid var(--line); border-radius: 20px; padding: 18px; }
.stat strong { display: block; font-size: 25px; color: var(--ink); }
.hero-media { position: relative; }
.hero-media figure, .card, .panel, .video-card, .quote-card, .faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.hero-media figure { padding: 12px; margin: 0; }
.hero-media img { border-radius: 20px; aspect-ratio: 16 / 9; object-fit: cover; }
.domain-pill {
    position: absolute;
    left: 28px;
    bottom: 24px;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(255,255,255,.92);
    font-weight: 700;
    box-shadow: 0 10px 30px rgba(0,0,0,.08);
}
.section { padding: 58px 0; }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 24px; }
.section-head p { max-width: 660px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card, .panel { padding: 24px; }
.card ul, .panel ul { margin: 14px 0 0; padding-left: 20px; color: var(--muted); }
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.badge { display: inline-flex; border: 1px solid #ffd8d1; color: var(--accent-deep); background: #fff7f5; border-radius: 999px; padding: 5px 10px; font-size: 13px; font-weight: 700; }
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.video-card { overflow: hidden; transition: transform .25s ease, box-shadow .25s ease; }
.video-card:hover { transform: translateY(-5px); box-shadow: 0 24px 70px rgba(45,35,28,.14); }
.video-frame { position: relative; aspect-ratio: 16/10; background: #f7f0ea; overflow: hidden; }
.video-frame video, .video-frame img { width: 100%; height: 100%; object-fit: cover; }
.play-badge {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    background: rgba(20,20,30,.12);
    opacity: 0;
    transition: opacity .2s ease;
}
.video-card:hover .play-badge, .video-card:focus-within .play-badge { opacity: 1; }
.play-badge span {
    display: grid;
    place-items: center;
    width: 66px;
    height: 66px;
    border-radius: 50%;
    background: rgba(255,255,255,.94);
    color: var(--accent-deep);
    font-size: 28px;
    box-shadow: 0 16px 44px rgba(0,0,0,.16);
}
.video-body { padding: 18px; }
.video-meta { display: flex; flex-wrap: wrap; gap: 10px; color: #777784; font-size: 13px; margin: 10px 0 0; }
.video-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.video-tags span { background: var(--soft); color: #3b677d; border-radius: 999px; padding: 4px 9px; font-size: 12px; font-weight: 700; }
.quote-card { padding: 22px; }
.quote-card strong { display: block; color: var(--ink); margin-bottom: 8px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 20px 22px; box-shadow: none; }
.faq-item summary { cursor: pointer; font-weight: 800; color: var(--ink); }
.cta-band { background: #24242e; color: #fff; border-radius: 34px; padding: 36px; display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: center; }
.cta-band p { color: rgba(255,255,255,.75); }
.breadcrumb { color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.breadcrumb a { color: var(--accent-deep); }
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 28px; align-items: start; }
.article { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.article h2 { margin-top: 24px; }
.sidebar { position: sticky; top: 142px; }
.table-list { width: 100%; border-collapse: collapse; overflow: hidden; border-radius: 18px; }
.table-list th, .table-list td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; color: var(--muted); }
.table-list th { color: var(--ink); background: #fff7f5; }
.site-footer { margin-top: 56px; padding: 46px 0; background: #20202a; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.3fr .8fr 1fr; gap: 28px; }
.site-footer p, .site-footer a { color: rgba(255,255,255,.72); }
.site-footer h2 { font-size: 18px; color: #fff; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }
.footer-logo { margin-bottom: 16px; border-radius: 10px; background: rgba(255,255,255,.9); }
@media (max-width: 980px) {
    .header-inner { align-items: flex-start; flex-direction: column; }
    .hero-grid, .article-layout, .grid-2, .cta-band { grid-template-columns: 1fr; }
    .grid-3, .video-grid, .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .sidebar { position: static; }
}
@media (max-width: 680px) {
    .container { width: min(100% - 24px, 1160px); }
    .hero { padding-top: 42px; }
    .grid-3, .video-grid, .footer-grid, .hero-stats { grid-template-columns: 1fr; }
    .search-form { flex-direction: column; }
    .search-form button { width: 100%; }
    .section-head { display: block; }
    .cta-band { padding: 26px; border-radius: 24px; }
}