:root {
    --bg: #f6f3ee;
    --surface: #ffffff;
    --text: #202124;
    --muted: #68615a;
    --line: #e9e1d8;
    --brand: #1f1f23;
    --accent: #f27a3d;
    --accent-soft: #fff0e8;
    --radius: 22px;
    --shadow: 0 18px 45px rgba(32, 33, 36, .08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
img, video { max-width: 100%; height: auto; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(246, 243, 238, .94);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}
.header-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 16px 20px 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
}
.brand-link, .footer-logo { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; }
.brand-link img, .footer-logo img { width: 120px; height: auto; }
.brand-link span { display: flex; flex-direction: column; line-height: 1.15; }
.brand-link em { font-style: normal; font-size: 13px; color: var(--muted); font-weight: 600; }
.main-nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.main-nav a {
    padding: 9px 12px;
    border-radius: 999px;
    background: rgba(255,255,255,.72);
    font-size: 14px;
    border: 1px solid transparent;
}
.main-nav a:hover { border-color: var(--accent); background: var(--accent-soft); }
.search-zone { max-width: 1240px; margin: 0 auto; padding: 0 20px 14px; display: grid; gap: 8px; }
.site-search { display: flex; gap: 10px; background: var(--surface); padding: 8px; border-radius: 18px; box-shadow: 0 6px 18px rgba(32,33,36,.05); }
.site-search input { flex: 1; border: 0; background: #f8f5f0; border-radius: 12px; padding: 12px 14px; font-size: 15px; outline: none; }
.site-search button, .btn, .interactive-actions button, .share-list button, .comment-card button, .author-card button, .mock-form button {
    border: 0;
    background: var(--brand);
    color: #fff;
    padding: 11px 16px;
    border-radius: 14px;
    cursor: pointer;
    font-weight: 700;
}
.search-zone p { margin: 0; color: var(--muted); font-size: 13px; }
.breadcrumb { max-width: 1240px; margin: 18px auto 0; padding: 0 20px; color: var(--muted); display: flex; gap: 8px; flex-wrap: wrap; font-size: 14px; }
.home-main, .page-main { max-width: 1240px; margin: 0 auto; padding: 22px 20px 70px; }
.hero, .page-hero {
    background: radial-gradient(circle at top right, #fff1e7, #fff 45%, #f9f5ee);
    border: 1px solid var(--line);
    border-radius: 34px;
    padding: 34px;
    box-shadow: var(--shadow);
}
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); gap: 30px; align-items: center; }
.eyebrow { color: var(--accent); font-weight: 900; letter-spacing: .02em; margin: 0 0 8px; }
h1 { font-size: clamp(34px, 5vw, 62px); line-height: 1.08; margin: 0 0 18px; letter-spacing: -.04em; }
h2 { font-size: clamp(26px, 3vw, 38px); line-height: 1.18; margin: 0 0 12px; letter-spacing: -.03em; }
h3 { margin: 0 0 10px; line-height: 1.32; }
.hero-copy > p:not(.eyebrow), .page-hero p { color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; background: #fff; color: var(--brand); border: 1px solid var(--line); }
.btn.primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.hero-stats, .author-card dl { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 18px 0 0; }
.hero-stats div, .author-card dl div { padding: 14px; background: rgba(255,255,255,.76); border-radius: 16px; border: 1px solid var(--line); }
dt { color: var(--muted); font-size: 12px; } dd { margin: 0; font-weight: 900; font-size: 20px; }
.hero-media { margin: 0; border-radius: 26px; overflow: hidden; background: #fff; border: 1px solid var(--line); }
.hero-media figcaption, .video-figure figcaption { padding: 10px 12px; color: var(--muted); font-size: 12px; background: rgba(255,255,255,.86); }
.section { margin-top: 34px; }
.section-head { max-width: 800px; margin-bottom: 18px; }
.section-head p { color: var(--muted); margin: 0; }
.cards { display: grid; gap: 16px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.five { grid-template-columns: repeat(5, 1fr); }
.info-card, .author-card, .comment-card, .notice-box, details, .category-list a, .share-list button, .mock-form {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 10px 26px rgba(32,33,36,.045);
}
.info-card, .author-card, .comment-card, .notice-box, details, .mock-form { padding: 20px; }
.info-card p, .author-card p, .comment-card p, .notice-box p { color: var(--muted); }
.heat { display: inline-flex; margin: 8px 0; padding: 6px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.info-card ul { padding-left: 18px; color: var(--muted); }
.more { font-weight: 900; color: var(--accent); }
.video-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.video-grid.compact { grid-template-columns: repeat(3, 1fr); }
.video-card { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); }
.video-figure { margin: 0; position: relative; overflow: hidden; background: #fff; }
.video-figure img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; transition: transform .28s ease; }
.video-card:hover .video-figure img, .video-card.is-hover .video-figure img { transform: scale(1.035); }
.video-layer { position: absolute; inset: 0; width: 100%; height: calc(100% - 38px); object-fit: cover; opacity: .02; pointer-events: none; }
.play-button {
    position: absolute;
    left: 50%;
    top: calc(50% - 18px);
    transform: translate(-50%, -50%) scale(.88);
    width: 74px;
    height: 74px;
    border-radius: 999px;
    border: 2px solid rgba(255,255,255,.82);
    background: rgba(31,31,35,.82);
    color: #fff;
    font-size: 28px;
    opacity: 0;
    transition: .22s ease;
    cursor: pointer;
}
.video-card:hover .play-button, .video-card.is-hover .play-button { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-body { padding: 18px; }
.video-body p { color: var(--muted); }
.meta-line, .stats { display: flex; flex-wrap: wrap; gap: 8px 14px; color: var(--muted); font-size: 13px; margin: 8px 0; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.tags span { padding: 5px 9px; border-radius: 999px; background: #f8f5f0; color: #5a5149; font-size: 12px; font-weight: 700; }
.interactive-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.interactive-actions button { padding: 8px 10px; font-size: 12px; background: #f8f5f0; color: var(--brand); border: 1px solid var(--line); }
.interactive-actions button:hover, .comment-card button:hover, .author-card button:hover { background: var(--accent); color: #fff; }
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 20px; align-items: start; }
.category-list, .share-list { display: grid; gap: 12px; }
.category-list { grid-template-columns: repeat(2, 1fr); }
.category-list a { display: grid; padding: 18px; gap: 4px; }
.category-list span, .share-list span { color: var(--muted); font-size: 14px; }
.role { color: var(--accent) !important; font-weight: 800; }
.author-card dl { grid-template-columns: repeat(3, 1fr); }
.author-card dl div { padding: 10px; }
.notice-box.soft { background: #fff8f4; }
.check-list { padding-left: 20px; color: var(--muted); }
.faq-list { display: grid; gap: 10px; }
details summary { cursor: pointer; font-weight: 900; }
details p { color: var(--muted); margin-bottom: 0; }
.comment-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.comment-card time { color: var(--accent); font-size: 13px; font-weight: 800; }
.comment-card button, .author-card button { background: #f8f5f0; color: var(--brand); border: 1px solid var(--line); padding: 8px 10px; }
.share-list button { text-align: left; display: grid; gap: 4px; background: var(--surface); color: var(--text); }
.share-list button:hover { border-color: var(--accent); }
.page-hero { margin-bottom: 30px; }
.mock-form { display: grid; gap: 14px; }
.mock-form label { display: grid; gap: 8px; font-weight: 900; }
.mock-form input, .mock-form textarea { border: 1px solid var(--line); border-radius: 14px; padding: 12px; min-height: 46px; font: inherit; }
.mock-form textarea { min-height: 150px; }
.site-footer { background: #1f1f23; color: #fff; padding: 42px 20px 20px; }
.footer-grid { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 26px; }
.site-footer p, .site-footer a { color: rgba(255,255,255,.76); }
.site-footer a { display: block; margin: 6px 0; }
.footer-logo { color: #fff; font-size: 18px; }
.copyright { max-width: 1240px; margin: 24px auto 0; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.65); font-size: 13px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.toast {
    position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
    background: #1f1f23; color: #fff; padding: 12px 16px; border-radius: 999px;
    box-shadow: var(--shadow); z-index: 50; opacity: 0; pointer-events: none; transition: .2s ease;
}
.toast.show { opacity: 1; bottom: 38px; }
@media (max-width: 1080px) {
    .hero, .split, .footer-grid { grid-template-columns: 1fr; }
    .cards.three, .cards.five, .video-grid, .video-grid.compact, .comment-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
    .header-inner { align-items: flex-start; flex-direction: column; }
    .main-nav { justify-content: flex-start; }
    .hero, .page-hero { padding: 22px; border-radius: 24px; }
    .hero-stats, .cards.three, .cards.five, .video-grid, .video-grid.compact, .category-list, .comment-list { grid-template-columns: 1fr; }
    .site-search { flex-direction: column; }
    h1 { font-size: 34px; }
}