:root {
    --black: #050505;
    --charcoal: #111214;
    --deep: #1b1b1c;
    --muted: #7f7a70;
    --line: rgba(215, 190, 145, 0.22);
    --gold: #d7be91;
    --gold-soft: #eadcc4;
    --paper: #f7f3eb;
    --white: #fffdf7;
    --radius: 24px;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--deep);
    background: var(--paper);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 16px 5vw;
    background: rgba(5, 5, 5, 0.92);
    color: var(--white);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}
.brand-logo { display: inline-flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: 0.08em; }
.brand-mark {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--gold);
    color: var(--gold);
    border-radius: 50%;
    font-size: 13px;
}
.brand-name { font-size: 18px; }
.site-nav { display: none; align-items: center; gap: 22px; font-size: 14px; color: rgba(255, 253, 247, 0.84); }
.site-nav a:hover { color: var(--gold); }
.site-nav.is-open {
    position: absolute;
    top: 75px;
    left: 5vw;
    right: 5vw;
    display: grid;
    padding: 20px;
    background: rgba(5,5,5,0.96);
    border: 1px solid var(--line);
    border-radius: 18px;
}
.nav-toggle { border: 1px solid var(--line); background: transparent; color: var(--white); padding: 8px 12px; border-radius: 12px; }
.search-band {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    padding: 14px 5vw;
    background: #0b0b0c;
    border-bottom: 1px solid var(--line);
}
.search-band input {
    min-width: 0;
    padding: 13px 14px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: #171719;
    color: var(--white);
    outline: none;
}
.search-band button, .btn {
    border: 0;
    border-radius: 999px;
    padding: 13px 18px;
    cursor: pointer;
    font-weight: 700;
}
.search-band button, .btn-primary { background: var(--gold); color: var(--black); }
.btn-ghost { border: 1px solid var(--line); color: var(--gold-soft); background: transparent; }
.search-note { grid-column: 1 / -1; margin: 0; color: rgba(255,255,255,0.58); font-size: 13px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.section, .hero, .page-hero { padding: 72px 5vw; }
.section-dark { background: radial-gradient(circle at top right, rgba(215,190,145,0.15), transparent 34%), var(--black); color: var(--white); }
.section-muted { background: #eee8dc; }
.hero { display: grid; gap: 34px; min-height: 82vh; align-items: center; }
.hero h1, .page-hero h1 { margin: 0; font-size: clamp(34px, 8vw, 76px); line-height: 1.05; letter-spacing: -0.04em; }
h2 { margin: 0 0 18px; font-size: clamp(26px, 5vw, 46px); line-height: 1.15; letter-spacing: -0.03em; }
h3 { margin: 0 0 10px; font-size: 20px; }
p { margin: 0 0 18px; }
.eyebrow { color: var(--gold); letter-spacing: 0.18em; text-transform: uppercase; font-size: 12px; font-weight: 700; }
.hero-lead, .section-lead, .page-hero p { max-width: 720px; color: rgba(255,253,247,0.76); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.trust-list { display: grid; gap: 12px; padding: 0; margin: 30px 0 0; list-style: none; }
.trust-list li { padding: 16px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,0.04); }
.trust-list strong { display: block; color: var(--gold-soft); }
.trust-list span { color: rgba(255,253,247,0.62); }
.hero-media { margin: 0; position: relative; }
.hero-media img, .split img, .case-grid img { border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--line); }
.hero-media figcaption { margin-top: 12px; color: rgba(255,253,247,0.62); font-size: 14px; }
.cards { display: grid; gap: 18px; }
.card {
    padding: 24px;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.62);
    border: 1px solid rgba(17,18,20,0.08);
    box-shadow: 0 20px 60px rgba(0,0,0,0.06);
}
.card.review p { font-size: 15px; }
.card.review span { display: block; color: var(--muted); font-size: 13px; }
.flow-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.flow-list li { display: grid; gap: 8px; padding: 22px; border-radius: var(--radius); background: rgba(255,255,255,0.54); border: 1px solid rgba(17,18,20,0.08); }
.flow-list span { color: var(--gold); font-weight: 800; }
.split { display: grid; gap: 28px; align-items: center; }
.video-grid { display: grid; gap: 20px; }
.video-card { overflow: hidden; border-radius: var(--radius); background: #141416; border: 1px solid var(--line); box-shadow: var(--shadow); }
.video-shell { position: relative; aspect-ratio: 16 / 10; background: #000; overflow: hidden; }
.video-poster { width: 100%; height: 100%; object-fit: cover; opacity: 0.9; }
.play-button {
    position: absolute;
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%) scale(0.86);
    width: 68px;
    height: 68px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.55);
    background: rgba(215,190,145,0.9);
    color: #050505;
    opacity: 0;
    transition: 180ms ease;
    cursor: pointer;
}
.video-card:hover .play-button, .video-card:focus-within .play-button, .video-card.is-active .play-button { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-body { padding: 22px; }
.video-body p { color: rgba(255,253,247,0.68); }
.tag { display: inline-flex; padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--gold); font-size: 12px; margin-bottom: 12px; }
.metrics { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 14px 0 0; }
.metrics li { padding: 6px 10px; border-radius: 999px; background: rgba(255,255,255,0.08); color: rgba(255,253,247,0.76); font-size: 12px; }
.case-grid { display: grid; gap: 20px; }
.case-grid article { padding: 14px; border-radius: var(--radius); background: rgba(255,255,255,0.56); border: 1px solid rgba(17,18,20,0.08); }
.case-grid h3 { margin-top: 16px; }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid rgba(17,18,20,0.12); border-radius: 18px; padding: 16px 18px; background: rgba(255,255,255,0.62); }
summary { cursor: pointer; font-weight: 800; }
.cta { text-align: center; background: linear-gradient(135deg, #141416, #2a2318); color: var(--white); }
.cta p { max-width: 680px; margin-left: auto; margin-right: auto; color: rgba(255,253,247,0.72); }
.page-hero { min-height: 45vh; display: grid; align-content: center; }
.contact-card { display: grid; gap: 14px; padding: 24px; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.contact-card label { display: grid; gap: 8px; font-weight: 700; }
.contact-card input, .contact-card textarea { width: 100%; padding: 13px; border-radius: 14px; border: 1px solid rgba(17,18,20,0.14); font: inherit; }
.site-footer { padding: 56px 5vw 28px; background: var(--black); color: var(--white); }
.footer-grid { display: grid; gap: 28px; }
.site-footer h2 { font-size: 18px; letter-spacing: 0; }
.site-footer p, .site-footer a { color: rgba(255,253,247,0.68); }
.footer-bottom { margin-top: 34px; padding-top: 18px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
@media (min-width: 760px) {
    .site-nav { display: flex; }
    .nav-toggle { display: none; }
    .hero { grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr); }
    .trust-list { grid-template-columns: repeat(3, 1fr); }
    .cards.three { grid-template-columns: repeat(3, 1fr); }
    .cards.four { grid-template-columns: repeat(4, 1fr); }
    .flow-list { grid-template-columns: repeat(4, 1fr); }
    .split { grid-template-columns: minmax(0, 1fr) minmax(300px, 0.9fr); }
    .video-grid { grid-template-columns: repeat(3, 1fr); }
    .case-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
}
@media (max-width: 420px) {
    .search-band { grid-template-columns: 1fr; }
    .section, .hero, .page-hero { padding: 56px 5vw; }
}