:root {
    --bg: #fff8ed;
    --paper: #ffffff;
    --ink: #24211d;
    --muted: #6f665e;
    --line: #ead9c8;
    --brand: #f08a24;
    --brand-dark: #a84f0d;
    --soft: #fff2dc;
    --shadow: 0 18px 50px rgba(54, 32, 12, 0.12);
    --radius: 26px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.72;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 248, 237, 0.94);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}
.topbar {
    max-width: 1180px;
    margin: 0 auto;
    padding: 16px 20px 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
    font-size: 24px;
    letter-spacing: -0.02em;
}
.logo img { width: 42px; height: 42px; border-radius: 14px; box-shadow: var(--shadow); }
.domain-pill {
    margin: 0;
    padding: 8px 14px;
    border: 1px solid var(--line);
    background: var(--paper);
    border-radius: 999px;
    color: var(--muted);
    font-size: 14px;
}
.main-nav {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px 12px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
}
.main-nav a {
    flex: 0 0 auto;
    padding: 8px 12px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 14px;
}
.main-nav a:hover { background: var(--soft); color: var(--brand-dark); }
.search-wrap {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px 16px;
}
.search-form {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 12px;
    box-shadow: 0 8px 24px rgba(54, 32, 12, 0.06);
}
.search-form label { display: block; color: var(--brand-dark); font-weight: 800; margin-bottom: 8px; }
.search-row { display: flex; gap: 10px; }
.search-row input {
    flex: 1;
    min-width: 0;
    padding: 13px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    font: inherit;
    background: #fffdf8;
}
.search-row button, .btn {
    border: 0;
    border-radius: 14px;
    padding: 13px 18px;
    font-weight: 800;
    cursor: pointer;
}
.search-row button, .btn.primary { background: var(--brand); color: #fff; }
.btn.ghost { border: 1px solid var(--line); background: var(--paper); color: var(--brand-dark); }
.search-message { margin: 8px 2px 0; color: var(--brand-dark); font-size: 14px; min-height: 22px; }
.site-main { max-width: 1180px; margin: 0 auto; padding: 28px 20px 40px; }
.hero, .page-hero, .section {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}
.hero {
    display: grid;
    grid-template-columns: 1.06fr 0.94fr;
    gap: 28px;
    padding: 38px;
    align-items: center;
}
.hero h1, .page-hero h1 { font-size: clamp(32px, 5vw, 58px); line-height: 1.08; margin: 12px 0 16px; letter-spacing: -0.05em; }
.hero-desc, .page-hero p { color: var(--muted); font-size: 18px; }
.eyebrow { margin: 0 0 8px; color: var(--brand-dark); font-weight: 900; letter-spacing: 0.08em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0; }
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 26px 0 0;
}
.hero-stats div { padding: 14px; border-radius: 18px; background: var(--soft); }
.hero-stats dt { color: var(--muted); font-size: 13px; }
.hero-stats dd { margin: 4px 0 0; font-size: 22px; font-weight: 900; }
.hero-media img, .side-image img { border-radius: 24px; border: 1px solid var(--line); }
figcaption { color: var(--muted); font-size: 13px; margin-top: 10px; }
.page-hero { padding: 34px 38px; }
.breadcrumb { font-size: 14px; color: var(--muted); margin: 0 0 10px; }
.breadcrumb a { color: var(--brand-dark); font-weight: 800; }
.section { padding: 34px; }
.section.soft { background: var(--soft); }
.section-head { max-width: 780px; margin-bottom: 22px; }
.section-head h2, .split h2 { font-size: clamp(26px, 3vw, 38px); line-height: 1.18; margin: 0 0 10px; letter-spacing: -0.03em; }
.section-head p, .split p { color: var(--muted); }
.card-grid { display: grid; gap: 16px; }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.info-card, .review-card, .log-item, .help-list article, .contact-list article {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 20px;
}
.info-card h3, .review-card h3, .log-item h3, .help-list h3, .contact-list h3 { margin: 0 0 8px; line-height: 1.25; }
.info-card p, .review-card p, .log-item p, .help-list p, .contact-list p { color: var(--muted); margin: 0; }
.icon-badge {
    display: inline-flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--soft);
    color: var(--brand-dark);
    font-weight: 900;
    margin-bottom: 14px;
}
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag-row span { font-size: 12px; color: var(--brand-dark); background: var(--soft); border: 1px solid var(--line); padding: 5px 8px; border-radius: 999px; }
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.video-card { border-radius: 24px; overflow: hidden; background: #fff; border: 1px solid var(--line); box-shadow: 0 12px 30px rgba(54, 32, 12, 0.08); }
.video-frame { position: relative; aspect-ratio: 16/9; background: #24180e; overflow: hidden; }
.video-frame video { width: 100%; height: 100%; object-fit: cover; display: block; background-size: cover; }
.play-overlay {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(0.92);
    width: 66px;
    height: 66px;
    border: 0;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.92);
    color: var(--brand-dark);
    font-size: 28px;
    opacity: 0;
    transition: 0.18s ease;
    cursor: pointer;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}
.video-card:hover .play-overlay, .video-card:focus-within .play-overlay { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-body { padding: 18px; }
.video-body h3 { margin: 0 0 8px; line-height: 1.35; }
.video-body p { color: var(--muted); margin: 0; }
.metrics { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.metrics span { color: #7b4c1d; background: #fff6e9; border-radius: 12px; padding: 6px 8px; font-size: 13px; font-weight: 800; }
.split { display: grid; grid-template-columns: 1fr 0.9fr; gap: 28px; align-items: center; }
.timeline { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.timeline li { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 16px; }
.timeline span { display: inline-block; color: var(--brand-dark); font-weight: 900; margin-bottom: 4px; }
.timeline strong { display: block; font-size: 18px; }
.timeline p { margin: 6px 0 0; color: var(--muted); }
.timeline.standalone { margin-top: 16px; }
.log-list { display: grid; gap: 12px; }
.log-list.wide { max-width: 880px; }
.log-item { display: grid; grid-template-columns: 90px 1fr; gap: 14px; align-items: start; }
.log-item > span { font-weight: 900; color: var(--brand-dark); }
.log-item small { color: var(--muted); }
.faq-list { display: grid; gap: 12px; }
.faq-list.wide { max-width: 900px; }
details { border: 1px solid var(--line); background: var(--paper); border-radius: 18px; padding: 16px 18px; }
summary { cursor: pointer; font-weight: 900; }
details p { color: var(--muted); margin-bottom: 0; }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.review-card span { color: var(--brand-dark); font-weight: 800; font-size: 14px; }
.help-list, .contact-list { display: grid; gap: 12px; margin-top: 16px; }
.text-link { color: var(--brand-dark); font-weight: 900; border-bottom: 2px solid var(--brand); }
.site-footer { background: #25180d; color: #fff6e8; margin-top: 20px; }
.footer-grid { max-width: 1180px; margin: 0 auto; padding: 34px 20px; display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 22px; }
.footer-logo img { box-shadow: none; }
.footer-grid p, .footer-grid a, .copyright { color: #ead8bf; }
.footer-links { list-style: none; margin: 0; padding: 0; columns: 2; }
.footer-links li { margin: 0 0 8px; }
.copyright { border-top: 1px solid rgba(255,255,255,0.12); padding: 14px 20px 20px; text-align: center; }

@media (max-width: 980px) {
    .hero, .split { grid-template-columns: 1fr; }
    .card-grid.four, .video-grid, .review-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
    .topbar { align-items: flex-start; flex-direction: column; }
    .main-nav { padding-bottom: 8px; }
    .search-row, .hero-actions { flex-direction: column; }
    .hero, .page-hero, .section { padding: 22px; border-radius: 20px; }
    .card-grid.four, .card-grid.three, .video-grid, .review-grid, .footer-grid, .hero-stats { grid-template-columns: 1fr; }
    .hero h1, .page-hero h1 { font-size: 34px; }
    .log-item { grid-template-columns: 1fr; }
}