:root {
    --bg: #070711;
    --panel: rgba(17, 16, 35, .82);
    --panel-2: rgba(255, 255, 255, .06);
    --text: #f8f5ff;
    --muted: #b9b2c9;
    --gold: #ffd36c;
    --violet: #9f67ff;
    --cyan: #54ecff;
    --pink: #ff4fa3;
    --line: rgba(255,255,255,.12);
    --shadow: 0 24px 80px rgba(0, 0, 0, .45);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background:
        radial-gradient(circle at 18% 8%, rgba(159, 103, 255, .25), transparent 28rem),
        radial-gradient(circle at 88% 10%, rgba(255, 211, 108, .16), transparent 24rem),
        linear-gradient(145deg, #05050c 0%, #0a0918 48%, #12071a 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font: inherit; }
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(18px);
    background: rgba(7, 7, 17, .84);
    border-bottom: 1px solid var(--line);
}
.topline { height: 3px; background: linear-gradient(90deg, var(--gold), var(--violet), var(--cyan), var(--pink)); }
.nav-shell,
.search-panel,
.container,
.hero,
.site-footer { width: min(1200px, calc(100% - 32px)); margin: 0 auto; }
.nav-shell {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.brand-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; letter-spacing: .04em; }
.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--gold), var(--violet));
    color: #090814;
    box-shadow: 0 0 34px rgba(159,103,255,.55), inset 0 0 16px rgba(255,255,255,.25);
}
.brand-logo small { display: block; color: var(--muted); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; }
.main-nav { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 8px; }
.main-nav a {
    padding: 10px 12px;
    border: 1px solid transparent;
    border-radius: 999px;
    color: #e9e2ff;
    font-size: 14px;
    transition: .24s ease;
}
.main-nav a:hover { border-color: rgba(255,211,108,.36); background: rgba(255,255,255,.07); color: var(--gold); }
.search-panel { display: grid; grid-template-columns: 1fr auto; gap: 10px; padding: 0 0 16px; }
.search-panel input {
    width: 100%;
    border: 1px solid rgba(255,255,255,.16);
    border-radius: 999px;
    padding: 14px 18px;
    color: var(--text);
    background: rgba(255,255,255,.06);
    outline: none;
}
.search-panel input:focus { border-color: rgba(84,236,255,.6); box-shadow: 0 0 0 4px rgba(84,236,255,.1); }
.search-panel button,
.cta,
.ghost-cta {
    border: 0;
    border-radius: 999px;
    padding: 14px 20px;
    color: #080710;
    font-weight: 800;
    cursor: pointer;
    background: linear-gradient(135deg, var(--gold), var(--violet));
    box-shadow: 0 16px 40px rgba(159,103,255,.25);
}
.search-tip { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 13px; min-height: 22px; }
.hero {
    position: relative;
    display: grid;
    grid-template-columns: 1.02fr .98fr;
    gap: 34px;
    padding: 58px 0 36px;
    align-items: center;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 7% 18% auto auto;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: rgba(255,211,108,.18);
    filter: blur(60px);
    pointer-events: none;
}
.kicker { color: var(--gold); font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3, h4, h5, h6 { line-height: 1.15; margin: 0 0 14px; }
h1 { font-size: clamp(42px, 7vw, 86px); letter-spacing: -.06em; }
h2 { font-size: clamp(28px, 4vw, 48px); letter-spacing: -.04em; }
h3 { font-size: 22px; }
p { color: var(--muted); margin: 0 0 16px; }
.hero p { font-size: 18px; }
.gradient-text { background: linear-gradient(90deg, #fff, var(--gold), var(--violet), var(--cyan)); -webkit-background-clip: text; color: transparent; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 0; }
.ghost-cta { color: var(--text); background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.18); }
.metric-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 28px; }
.metric { padding: 16px; border: 1px solid var(--line); border-radius: 22px; background: rgba(255,255,255,.05); }
.metric strong { display: block; font-size: 24px; color: var(--gold); }
.hero-visual,
.panel,
.video-card,
.topic-card,
.review,
.faq-item,
.expert-card,
.partner,
.column-card,
.contact-card {
    border: 1px solid var(--line);
    background: var(--panel);
    border-radius: 30px;
    box-shadow: var(--shadow);
}
.hero-visual { position: relative; overflow: hidden; padding: 14px; }
.hero-visual img { width: 100%; min-height: 480px; object-fit: cover; border-radius: 22px; filter: saturate(1.1) contrast(1.05); }
.hero-caption {
    position: absolute;
    left: 30px;
    right: 30px;
    bottom: 30px;
    padding: 18px;
    border-radius: 22px;
    background: rgba(5,5,12,.72);
    border: 1px solid rgba(255,255,255,.14);
    backdrop-filter: blur(12px);
}
.section { padding: 72px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.section-head p { max-width: 720px; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.panel { padding: 26px; }
.video-card { position: relative; overflow: hidden; background: #101020; }
.video-wrap { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 30px 30px 0 0; background: #05050b; }
.video-wrap video,
.video-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .32s ease, filter .32s ease; }
.video-wrap video { position: absolute; inset: 0; opacity: 0; pointer-events: none; }
.play-layer {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    background: radial-gradient(circle, rgba(255,211,108,.28), rgba(7,7,17,.06) 42%, rgba(7,7,17,.66));
    opacity: 0;
    transition: .28s ease;
}
.play-layer span {
    width: 76px;
    height: 76px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #070711;
    background: linear-gradient(135deg, var(--gold), var(--cyan));
    font-weight: 900;
    box-shadow: 0 0 44px rgba(84,236,255,.5);
}
.video-card:hover .play-layer { opacity: 1; }
.video-card:hover img { transform: scale(1.06); filter: brightness(1.1); }
.video-body { padding: 20px; }
.badge, .tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 10px;
    border-radius: 999px;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    color: #fff;
    font-size: 12px;
}
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.card-stats { display: flex; flex-wrap: wrap; gap: 10px; color: var(--muted); font-size: 13px; }
.card-stats strong { color: var(--gold); }
.topic-card, .expert-card, .review, .faq-item, .column-card, .contact-card { padding: 22px; }
.topic-card { position: relative; overflow: hidden; }
.topic-card::after, .column-card::after {
    content: "";
    position: absolute;
    right: -60px;
    top: -60px;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: rgba(159,103,255,.18);
    filter: blur(12px);
}
.barrage { display: flex; flex-direction: column; gap: 10px; }
.barrage span { padding: 10px 12px; border-radius: 999px; background: rgba(84,236,255,.08); border: 1px solid rgba(84,236,255,.18); color: #dffbff; }
.ai-showcase { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: center; }
.ai-showcase img, .contact-visual img, .expert-visual img { border-radius: 24px; border: 1px solid rgba(255,255,255,.14); }
.step-list { counter-reset: step; display: grid; gap: 14px; }
.step-list li {
    list-style: none;
    padding: 16px;
    border-radius: 20px;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.12);
}
.step-list li::before {
    counter-increment: step;
    content: "0" counter(step);
    color: var(--gold);
    font-weight: 900;
    margin-right: 10px;
}
.expert-card strong, .review strong { color: var(--gold); }
.partner-wall { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.partner { display: grid; place-items: center; min-height: 82px; font-weight: 900; color: #f9efff; background: rgba(255,255,255,.06); }
.faq-list { display: grid; gap: 14px; }
.faq-item summary { cursor: pointer; font-weight: 800; color: #fff; }
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 20px; align-items: stretch; }
.contact-card a { color: var(--cyan); word-break: break-all; }
.breadcrumb { margin: 28px 0 0; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--gold); }
.page-hero { padding: 52px 0 26px; }
.page-hero .panel { display: grid; grid-template-columns: 1fr .72fr; gap: 22px; align-items: center; }
.page-hero img { border-radius: 24px; min-height: 280px; object-fit: cover; }
.table-like { display: grid; gap: 10px; }
.table-like div { display: grid; grid-template-columns: 160px 1fr; gap: 12px; padding: 14px; border-radius: 16px; background: rgba(255,255,255,.05); }
.table-like strong { color: var(--gold); }
.site-footer { padding: 62px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.25fr .75fr 1fr; gap: 24px; padding: 28px; border: 1px solid var(--line); border-radius: 34px; background: rgba(255,255,255,.05); }
.footer-grid h2 { font-size: 18px; }
.footer-grid a { display: block; color: var(--muted); margin: 8px 0; }
.footer-grid a:hover { color: var(--gold); }
.qr-row { display: flex; gap: 14px; flex-wrap: wrap; }
.qr-row img { width: 118px; height: 118px; border-radius: 18px; border: 1px solid rgba(255,255,255,.14); }
.qr-row figcaption { color: var(--muted); font-size: 12px; margin-top: 8px; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; padding: 18px 4px 0; color: var(--muted); font-size: 13px; }
.domain-line strong { color: var(--cyan); }
@media (max-width: 980px) {
    .nav-shell { align-items: flex-start; flex-direction: column; padding: 16px 0; }
    .main-nav { justify-content: flex-start; }
    .hero, .ai-showcase, .contact-grid, .page-hero .panel { grid-template-columns: 1fr; }
    .hero-visual img { min-height: 340px; }
    .grid-4, .grid-3, .partner-wall { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .search-panel { grid-template-columns: 1fr; }
    h1 { font-size: 42px; }
    .metric-strip, .grid-2, .grid-3, .grid-4, .partner-wall { grid-template-columns: 1fr; }
    .hero { padding-top: 34px; }
    .section { padding: 48px 0; }
    .section-head { align-items: flex-start; flex-direction: column; }
    .table-like div { grid-template-columns: 1fr; }
}
.mt-18 { margin-top: 18px; }