:root {
    --bg: #fffaf7;
    --bg-soft: #fff1eb;
    --card: #ffffff;
    --text: #242124;
    --muted: #75666b;
    --brand: #e64747;
    --brand-dark: #a82e35;
    --line: rgba(166, 95, 95, .18);
    --shadow: 0 24px 60px rgba(105, 55, 55, .12);
    --radius-lg: 32px;
    --radius-md: 22px;
    --max: 1180px;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.72; }
a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 99; background: var(--brand); color: white; padding: 10px 16px; border-radius: 999px; }
.skip-link:focus { top: 16px; }
.sr-only { 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: 50; background: rgba(255, 250, 247, .92); backdrop-filter: blur(18px); border-bottom: 1px solid var(--line); }
.top-notice { display: flex; gap: 12px; align-items: center; justify-content: center; padding: 8px 16px; font-size: 13px; color: var(--muted); background: rgba(255,255,255,.6); }
.navbar { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 14px 20px; }
.brand-logo img, .footer-logo img { height: 48px; width: auto; }
.nav-links { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: flex-end; }
.nav-links a { padding: 9px 12px; border-radius: 999px; color: #57484e; font-size: 14px; }
.nav-links a:hover, .nav-links a.is-active { background: #ffe1d8; color: var(--brand-dark); }
.nav-toggle { display: none; border: 1px solid var(--line); background: white; border-radius: 999px; padding: 8px 14px; color: var(--brand-dark); }
.search-wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px 14px; }
.fake-search { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.fake-search input { border: 1px solid var(--line); background: white; border-radius: 999px; padding: 12px 18px; outline: none; box-shadow: 0 8px 30px rgba(150, 74, 74, .06); }
.fake-search input:focus { border-color: rgba(230,71,71,.5); }
.fake-search button, .btn { border: 0; cursor: pointer; border-radius: 999px; padding: 12px 18px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.fake-search button, .btn-primary { background: var(--brand); color: #fff; box-shadow: 0 12px 30px rgba(230,71,71,.28); }
.btn-secondary { background: white; color: var(--brand-dark); border: 1px solid var(--line); }
.search-hint { margin: 8px 4px 0; min-height: 22px; color: var(--muted); font-size: 13px; }
.hero-section { max-width: var(--max); margin: 26px auto 0; padding: 48px 20px 54px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.eyebrow { margin: 0 0 10px; color: var(--brand-dark); font-weight: 800; letter-spacing: .04em; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 14px; }
h1 { font-size: clamp(38px, 7vw, 72px); letter-spacing: -0.06em; }
h2 { font-size: clamp(26px, 4vw, 42px); letter-spacing: -0.04em; }
h3 { font-size: 21px; }
.hero-lead, .section-heading p, .inner-hero p { color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.hero-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 0 0 18px; }
.hero-metrics div { background: rgba(255,255,255,.74); border: 1px solid var(--line); border-radius: 22px; padding: 14px; box-shadow: 0 10px 30px rgba(120,60,60,.06); }
.hero-metrics dt { color: var(--muted); font-size: 13px; }
.hero-metrics dd { margin: 4px 0 0; color: var(--brand-dark); font-size: 24px; font-weight: 900; }
.domain-inline { color: var(--muted); }
.hero-visual { margin: 0; position: relative; border-radius: 42px; overflow: hidden; box-shadow: var(--shadow); background: white; }
.hero-visual img { aspect-ratio: 16/10; object-fit: cover; }
.video-card { position: relative; isolation: isolate; }
.video-figure { margin: 0; position: relative; overflow: hidden; background: white; }
.video-figure img { aspect-ratio: 16/10; object-fit: cover; transition: transform .4s ease; }
.video-preview { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; pointer-events: none; }
.play-button { position: absolute; left: 50%; top: 45%; transform: translate(-50%, -50%) scale(.92); background: rgba(255,255,255,.92); color: var(--brand-dark); border-radius: 999px; padding: 13px 18px; font-weight: 900; opacity: 0; transition: .25s ease; box-shadow: 0 16px 40px rgba(90,40,40,.18); }
.video-card:hover .play-button, .video-card:focus .play-button, .video-card.is-hover .play-button { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-card:hover img, .video-card:focus img { transform: scale(1.025); }
.image-description { margin: 0; padding: 10px 14px; font-size: 12px; color: var(--muted); background: rgba(255,255,255,.86); }
.section { max-width: var(--max); margin: 0 auto; padding: 72px 20px; }
.alt-section { max-width: none; background: linear-gradient(180deg, rgba(255,234,226,.72), rgba(255,250,247,0)); }
.alt-section > .section-heading, .alt-section > .product-grid, .alt-section > .review-grid, .alt-section > .faq-list { max-width: var(--max); margin-left: auto; margin-right: auto; }
.section-heading { max-width: 780px; margin-bottom: 30px; }
.trust-grid, .product-grid, .review-grid, .feature-list, .help-grid, .tips-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.trust-grid article, .review-card, .feature-list article, .help-grid article, .tips-list article, .contact-card, .entry-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 24px; box-shadow: 0 14px 40px rgba(120,60,60,.07); }
.product-grid { grid-template-columns: repeat(4, 1fr); }
.product-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.card-body { padding: 20px; }
.card-kicker, .review-role { color: var(--brand-dark); font-weight: 800; font-size: 13px; margin: 0 0 8px; }
.video-stats { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.video-stats span, .pill, .tag-row span { background: #fff0eb; color: var(--brand-dark); border-radius: 999px; padding: 6px 9px; font-size: 12px; font-weight: 700; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.text-link { color: var(--brand-dark); font-weight: 800; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scenario-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.scenario-card div { padding: 20px; }
.media-panel, .split-layout, .contact-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 24px; align-items: center; }
.media-panel figure, .split-layout figure { margin: 0; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.media-list { display: grid; gap: 14px; }
.media-list article { background: white; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 20px; }
.guide-section { background: #341f25; color: white; border-radius: 42px; margin-top: 36px; margin-bottom: 36px; }
.guide-section .section-heading p, .guide-section p { color: rgba(255,255,255,.76); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; padding: 0; list-style: none; counter-reset: step; }
.steps li { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.16); border-radius: 22px; padding: 20px; }
.faq-list { display: grid; gap: 12px; }
details { background: white; border: 1px solid var(--line); border-radius: 22px; padding: 18px 20px; box-shadow: 0 10px 30px rgba(120,60,60,.06); }
summary { cursor: pointer; font-weight: 900; color: var(--brand-dark); }
.contact-strip { display: flex; align-items: center; justify-content: space-between; gap: 20px; background: white; border: 1px solid var(--line); border-radius: 36px; box-shadow: var(--shadow); }
.site-footer { background: #24181d; color: rgba(255,255,255,.76); padding: 54px 20px 24px; }
.footer-grid { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 26px; }
.footer-grid h2 { color: white; font-size: 20px; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-links a { color: rgba(255,255,255,.82); }
.domain-card { background: rgba(255,255,255,.08); border-radius: 18px; padding: 14px; color: white; font-weight: 900; word-break: break-all; }
.footer-bottom { max-width: var(--max); margin: 28px auto 0; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); font-size: 14px; }
.breadcrumb { max-width: var(--max); margin: 0 auto; padding: 24px 20px 0; display: flex; gap: 8px; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--brand-dark); font-weight: 800; }
.inner-page { padding-bottom: 24px; }
.inner-hero { max-width: var(--max); margin: 0 auto; padding: 54px 20px 28px; }
.inner-hero h1 { font-size: clamp(34px, 5vw, 58px); }
.timeline { display: grid; gap: 16px; }
.timeline article { background: white; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 24px; box-shadow: 0 12px 36px rgba(120,60,60,.07); }
.timeline time { color: var(--brand-dark); font-weight: 900; }
.contact-form { display: grid; gap: 14px; background: white; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow); }
.contact-form label { display: grid; gap: 7px; font-weight: 800; color: var(--brand-dark); }
.contact-form input, .contact-form textarea, .contact-form select { width: 100%; border: 1px solid var(--line); border-radius: 16px; padding: 12px 14px; background: #fffdfa; color: var(--text); }
.form-note { color: var(--muted); font-size: 13px; margin: 0; }
@media (max-width: 980px) {
    .hero-section, .media-panel, .split-layout, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .trust-grid, .review-grid, .scenario-grid, .feature-list, .help-grid, .tips-list, .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
    .top-notice { flex-direction: column; gap: 2px; }
    .nav-toggle { display: inline-flex; }
    .navbar { align-items: flex-start; }
    .nav-links { display: none; width: 100%; flex-direction: column; align-items: stretch; }
    .nav-links.is-open { display: flex; }
    .navbar { flex-wrap: wrap; }
    .fake-search { grid-template-columns: 1fr; }
    .hero-section { padding-top: 32px; }
    .hero-metrics, .product-grid, .trust-grid, .review-grid, .scenario-grid, .feature-list, .help-grid, .tips-list, .steps { grid-template-columns: 1fr; }
    .contact-strip { align-items: flex-start; flex-direction: column; }
    .section { padding: 48px 18px; }
    .guide-section { border-radius: 28px; }
}