:root {
    --bg: #f7f2ea;
    --panel: #ffffff;
    --ink: #14232e;
    --muted: #5d6b74;
    --brand: #c9854d;
    --brand-deep: #243b4a;
    --line: #e9dccb;
    --soft: #fff8ef;
    --ok: #2f6f5f;
    --shadow: 0 18px 48px rgba(32, 38, 44, .11);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--ink);
    background: linear-gradient(180deg, #fffaf3 0%, var(--bg) 48%, #f5efe6 100%);
    line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 250, 243, .94);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
}
.header-row { display: flex; align-items: center; gap: 26px; padding: 14px 0 10px; }
.brand-logo img { width: 176px; height: auto; }
.top-nav { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; flex: 1; }
.top-nav a {
    padding: 8px 12px;
    border-radius: 999px;
    font-weight: 700;
    color: var(--brand-deep);
    font-size: 14px;
}
.top-nav a:hover { background: var(--soft); color: var(--brand); }
.search-strip { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; align-items: center; padding: 0 0 14px; }
.search-strip input {
    min-height: 44px;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0 18px;
    background: #fff;
    outline: none;
}
.search-strip input:focus { border-color: var(--brand); box-shadow: 0 0 0 4px rgba(201,133,77,.14); }
.search-strip button, .btn {
    border: none;
    border-radius: 999px;
    background: var(--ink);
    color: #fff;
    min-height: 44px;
    padding: 0 18px;
    font-weight: 800;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.search-strip button:hover, .btn:hover { background: var(--brand); }
.search-strip p { margin: 0; color: var(--muted); font-size: 13px; }
.hero { padding: 68px 0 38px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 34px; align-items: center; }
.eyebrow { color: var(--brand); font-weight: 900; letter-spacing: .08em; }
h1 { font-size: clamp(34px, 5vw, 64px); line-height: 1.08; margin: 12px 0 18px; letter-spacing: -1.2px; }
h2 { font-size: clamp(25px, 3vw, 38px); line-height: 1.2; margin: 0 0 16px; }
h3 { font-size: 20px; line-height: 1.35; margin: 8px 0 8px; }
p { margin: 0 0 14px; color: var(--muted); }
.lead { font-size: 18px; color: #41515c; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0; }
.btn.secondary { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.hero-proof { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 22px; }
.proof-item { background: rgba(255,255,255,.7); border: 1px solid var(--line); border-radius: 18px; padding: 14px; }
.proof-item strong { display: block; font-size: 22px; color: var(--ink); }
.hero-media { background: var(--panel); border: 1px solid var(--line); border-radius: 34px; padding: 16px; box-shadow: var(--shadow); }
.hero-media figure { margin: 0; }
.hero-media img { border-radius: 24px; }
.hero-media figcaption { padding: 10px 4px 0; color: var(--muted); font-size: 13px; }
.section { padding: 52px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin-bottom: 24px; }
.section-head p { max-width: 660px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 24px;
    box-shadow: 0 10px 28px rgba(32,38,44,.06);
}
.card .icon {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: var(--soft);
    display: grid;
    place-items: center;
    font-size: 24px;
    margin-bottom: 12px;
}
.banner-tools {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.tool-pill { background: var(--ink); color: #fff; padding: 18px; border-radius: 20px; min-height: 112px; }
.tool-pill span { color: #f5d4ac; font-weight: 800; }
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.video-card { background: #fff; border: 1px solid var(--line); border-radius: 26px; overflow: hidden; box-shadow: 0 10px 28px rgba(32,38,44,.06); }
.video-thumb { position: relative; overflow: hidden; aspect-ratio: 16/9; background: #eee; }
.video-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease, filter .35s ease; }
.play-button {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(.82);
    width: 66px;
    height: 66px;
    border-radius: 999px;
    border: 2px solid rgba(255,255,255,.8);
    background: rgba(20,35,46,.74);
    color: #fff;
    font-size: 26px;
    opacity: 0;
    transition: opacity .25s ease, transform .25s ease;
    cursor: pointer;
}
.video-card:hover img { transform: scale(1.06); filter: saturate(1.08) contrast(1.03); }
.video-card:hover .play-button { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-body { padding: 18px; }
.tag { display: inline-flex; border-radius: 999px; background: var(--soft); color: var(--brand); padding: 4px 10px; font-size: 12px; font-weight: 900; }
.metric, .image-description { font-size: 12px; color: #70808a; }
.timeline { display: grid; gap: 14px; }
.timeline-item { display: grid; grid-template-columns: 118px 1fr; gap: 16px; align-items: start; background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 18px; }
.timeline-item time { font-weight: 900; color: var(--brand); }
.faq-list details { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 16px 18px; margin-bottom: 12px; }
.faq-list summary { cursor: pointer; font-weight: 900; color: var(--ink); }
.testimonials { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.quote { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 18px; }
.quote strong { color: var(--ink); }
.cta { background: var(--ink); color: #fff; border-radius: 34px; padding: 36px; display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; }
.cta h2, .cta p { color: #fff; }
.cta p { opacity: .82; }
.cta .btn { background: #fff; color: var(--ink); }
.breadcrumb { margin: 26px 0 8px; display: flex; gap: 8px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--brand-deep); font-weight: 800; }
.page-hero { padding: 36px 0 22px; }
.article-list { display: grid; gap: 18px; }
.article-list article { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 24px; }
.kpi-list { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.kpi { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 18px; }
.kpi strong { display: block; font-size: 28px; color: var(--brand-deep); }
.site-footer { margin-top: 54px; background: #10222d; color: #fff; padding: 44px 0 22px; }
.site-footer p, .site-footer a { color: rgba(255,255,255,.74); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr 1fr; gap: 28px; }
.footer-logo { width: 172px; margin-bottom: 14px; }
.site-footer h2 { color: #fff; font-size: 19px; }
.site-footer a { display: block; margin: 6px 0; }
.copyright { border-top: 1px solid rgba(255,255,255,.12); margin-top: 24px; padding-top: 18px; font-size: 13px; }
.notice { border-left: 4px solid var(--brand); background: #fff; padding: 16px 18px; border-radius: 16px; }
@media (max-width: 960px) {
    .header-row, .section-head, .cta { align-items: start; }
    .header-row, .hero-grid, .grid-3, .grid-2, .video-grid, .footer-grid, .testimonials, .banner-tools, .cta { grid-template-columns: 1fr; display: grid; }
    .top-nav { justify-content: start; }
    .search-strip { grid-template-columns: 1fr; }
    .hero-proof, .kpi-list { grid-template-columns: 1fr; }
    .timeline-item { grid-template-columns: 1fr; }
}
.single-video { grid-template-columns: 1fr; }