:root {
    --black: #07070a;
    --white: #ffffff;
    --blue: #00d1ff;
    --pink: #ff2d95;
    --orange: #ff7a00;
    --yellow: #ffec00;
    --green: #c5ff00;
    --muted: #f3f5fb;
    --ink: #191920;
    --radius-xl: 32px;
    --shadow-hard: 10px 10px 0 #000;
    --shadow-soft: 0 26px 90px rgba(0, 0, 0, .22);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 10% 10%, rgba(0, 209, 255, .28), transparent 26rem),
        radial-gradient(circle at 90% 5%, rgba(255, 45, 149, .24), transparent 24rem),
        linear-gradient(135deg, #fff 0%, #fff 42%, #f6f1ff 100%);
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.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; background: rgba(255,255,255,.86); backdrop-filter: blur(18px); border-bottom: 4px solid #000; }
.top-glow { height: 8px; background: linear-gradient(90deg, var(--blue), var(--pink), var(--orange), var(--green), var(--yellow)); background-size: 300% 100%; animation: glide 6s linear infinite; }
.nav-wrap { display: flex; align-items: center; gap: 26px; justify-content: space-between; max-width: 1240px; margin: 0 auto; padding: 16px 18px 10px; }
.logo, .footer-logo { display: inline-flex; align-items: center; filter: drop-shadow(5px 6px 0 rgba(0,0,0,.14)); }
.main-nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.main-nav a { font-weight: 900; padding: 12px 14px; border: 2px solid transparent; border-radius: 999px; }
.main-nav a:hover, .main-nav a:focus-visible { background: var(--black); color: var(--white); border-color: var(--pink); box-shadow: 0 0 0 4px var(--yellow); }
.search-strip { max-width: 1240px; margin: 0 auto; padding: 0 18px 16px; display: grid; grid-template-columns: minmax(260px, 1fr) auto; gap: 10px 16px; align-items: center; }
.fake-search { display: flex; border: 4px solid #000; border-radius: 999px; overflow: hidden; background: #fff; box-shadow: var(--shadow-hard); }
.fake-search input { flex: 1; border: 0; padding: 15px 18px; font-size: 16px; outline: none; min-width: 0; }
.fake-search button { border: 0; background: linear-gradient(135deg, var(--pink), var(--orange)); color: #fff; padding: 0 24px; font-weight: 900; cursor: pointer; }
.fake-search button:hover { background: linear-gradient(135deg, var(--blue), var(--green)); color: #000; }
.domain-note { margin: 0; font-size: 14px; font-weight: 800; }
.search-toast { grid-column: 1 / -1; min-height: 22px; margin: 0; font-weight: 900; color: #111; }
.hero { position: relative; max-width: 1240px; margin: 34px auto 0; padding: 28px 18px 48px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 30px; align-items: center; }
.hero:before { content: ""; position: absolute; inset: 28px 0 auto auto; width: 180px; height: 180px; background: repeating-linear-gradient(45deg, var(--yellow) 0 10px, transparent 10px 20px); opacity: .5; transform: rotate(12deg); z-index: -1; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 12px; padding: 8px 14px; border: 3px solid #000; border-radius: 999px; background: var(--green); font-weight: 900; text-transform: uppercase; box-shadow: 5px 5px 0 #000; }
h1, h2, h3, h4, h5, h6 { line-height: 1.08; letter-spacing: -.03em; }
h1 { font-size: clamp(44px, 8vw, 94px); margin: 0 0 18px; }
h1 .pop, .section-title h2 .pop { color: var(--pink); text-shadow: 4px 4px 0 #000, -2px -2px 0 var(--yellow); }
.hero p { font-size: 18px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 22px; border: 4px solid #000; border-radius: 999px; font-weight: 900; box-shadow: var(--shadow-hard); transition: transform .2s ease, box-shadow .2s ease; }
.btn.primary { background: var(--pink); color: #fff; }
.btn.secondary { background: var(--yellow); }
.btn:hover { transform: translate(-3px, -3px); box-shadow: 14px 14px 0 #000; }
.hero-card { position: relative; border: 5px solid #000; border-radius: 38px; overflow: hidden; box-shadow: var(--shadow-hard); background: #000; isolation: isolate; }
.hero-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; opacity: .9; }
.hero-card .floating-stats { position: absolute; left: 20px; right: 20px; bottom: 20px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stat { background: rgba(255,255,255,.9); border: 3px solid #000; border-radius: 18px; padding: 12px; font-weight: 900; text-align: center; }
.stat strong { display: block; font-size: 22px; }
.marquee { border-block: 4px solid #000; background: #000; color: #fff; overflow: hidden; }
.marquee-track { display: flex; width: max-content; animation: marquee 22s linear infinite; }
.marquee span { padding: 16px 34px; font-weight: 900; color: var(--green); }
.section { max-width: 1240px; margin: 0 auto; padding: 72px 18px 0; }
.section-title { max-width: 760px; margin-bottom: 26px; }
.section-title h2 { font-size: clamp(34px, 6vw, 64px); margin: 0 0 14px; }
.section-title p:last-child { font-size: 17px; line-height: 1.75; color: #3a3a46; }
.grid { display: grid; gap: 22px; }
.grid.cards-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cards-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.video-card, .topic-card, .creator-card, .review-card, .faq-card, .json-card, .contact-card, .partner-card, .guide-card { background: #fff; border: 4px solid #000; border-radius: var(--radius-xl); box-shadow: var(--shadow-hard); overflow: hidden; }
.video-card { transition: transform .22s ease, filter .22s ease; }
.video-card:hover { transform: translate(-5px, -8px) rotate(-1deg); filter: saturate(1.35); }
.video-shell { position: relative; background: #000; overflow: hidden; }
.video-shell:after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, rgba(255,255,255,.25), transparent 34%), linear-gradient(135deg, rgba(0,209,255,.24), rgba(255,45,149,.26)); opacity: 0; transition: opacity .24s ease; }
.video-card:hover .video-shell:after { opacity: 1; animation: jumpGlow .8s steps(2, end) infinite; }
.mock-video { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; background: #111; }
.play-badge { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%) scale(.8); width: 76px; height: 76px; border-radius: 50%; border: 5px solid #000; background: var(--yellow); font-size: 30px; z-index: 2; opacity: 0; cursor: pointer; box-shadow: 0 0 32px var(--pink), 8px 8px 0 #000; transition: opacity .2s ease, transform .2s ease; }
.video-card:hover .play-badge, .video-card:focus-within .play-badge { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-tag { position: absolute; left: 14px; top: 14px; z-index: 3; background: var(--green); border: 3px solid #000; border-radius: 999px; padding: 8px 12px; font-weight: 900; }
.video-body { padding: 20px; }
.video-body h3 { margin: 0 0 12px; font-size: 22px; }
.video-body p { line-height: 1.7; color: #3a3a46; }
.video-metrics { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.video-metrics span { background: #000; color: #fff; border-radius: 999px; padding: 8px 10px; font-size: 13px; font-weight: 900; }
.text-link { display: inline-flex; font-weight: 900; color: #000; background: var(--blue); padding: 9px 12px; border: 3px solid #000; border-radius: 999px; }
.topic-card, .creator-card, .review-card, .faq-card, .json-card, .contact-card, .guide-card { padding: 22px; }
.topic-card:nth-child(2n), .review-card:nth-child(2n) { background: #fff7c4; }
.topic-card:nth-child(3n), .creator-card:nth-child(3n) { background: #e6fbff; }
.topic-card h3, .creator-card h3, .review-card h3, .faq-card h3, .json-card h3, .contact-card h3, .guide-card h3 { margin-top: 0; font-size: 24px; }
.topic-card p, .creator-card p, .review-card p, .faq-card p, .json-card p, .contact-card p, .guide-card p { line-height: 1.7; }
.ai-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: 22px; align-items: stretch; }
.ai-panel figure { margin: 0; border: 4px solid #000; border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-hard); background: #000; }
.ai-panel img { width: 100%; height: 100%; min-height: 380px; object-fit: cover; }
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 16px 0 0; list-style: none; }
.pill-list li { border: 3px solid #000; border-radius: 999px; padding: 10px 13px; background: var(--green); font-weight: 900; }
.partner-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.partner-card { min-height: 86px; display: grid; place-items: center; background: linear-gradient(135deg, #fff, #e6fbff); font-size: 22px; font-weight: 1000; letter-spacing: .04em; }
.faq-card details { cursor: pointer; }
.faq-card summary { font-size: 20px; font-weight: 900; }
.faq-card p { margin-bottom: 0; }
.json-output { background: #08080a; color: #e7fff6; border: 4px solid #000; border-radius: var(--radius-xl); padding: 20px; overflow: auto; box-shadow: var(--shadow-hard); font-size: 13px; line-height: 1.65; }
.breadcrumb { max-width: 1240px; margin: 24px auto 0; padding: 0 18px; font-weight: 900; }
.breadcrumb a { color: #000; border-bottom: 3px solid var(--pink); }
.page-hero { max-width: 1240px; margin: 26px auto 0; padding: 54px 18px; display: grid; grid-template-columns: 1fr .7fr; gap: 28px; align-items: center; }
.page-hero h1 { font-size: clamp(40px, 7vw, 78px); }
.page-hero-card { background: #000; color: #fff; border: 5px solid #000; border-radius: var(--radius-xl); padding: 30px; box-shadow: var(--shadow-hard); background-image: linear-gradient(135deg, rgba(255,45,149,.9), rgba(0,209,255,.8)); }
.page-hero-card strong { display: block; font-size: 44px; }
.contact-layout { display: grid; grid-template-columns: 1fr .9fr; gap: 22px; }
.contact-card a { border-bottom: 3px solid var(--pink); font-weight: 900; }
.site-footer { margin-top: 90px; background: #050507; color: #fff; border-top: 6px solid #000; padding: 46px 18px 22px; }
.footer-grid { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1.25fr .9fr; gap: 28px; }
.footer-grid p { line-height: 1.7; color: #e7e7ef; }
.footer-grid h2 { color: var(--green); margin-top: 0; }
.qr-row { display: flex; gap: 16px; flex-wrap: wrap; }
.qr-row figure { margin: 0; background: #fff; color: #000; border: 4px solid #000; border-radius: 22px; padding: 10px; max-width: 180px; }
.qr-row figcaption { font-size: 12px; line-height: 1.4; font-weight: 900; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin: 9px 0; }
.footer-links a { color: #fff; border-bottom: 2px solid var(--blue); font-weight: 900; }
.copyright { max-width: 1240px; margin: 28px auto 0; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.2); color: #cfcfd9; }
@keyframes glide { to { background-position: 300% 0; } }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes jumpGlow { 0% { filter: hue-rotate(0); } 50% { filter: hue-rotate(110deg); } 100% { filter: hue-rotate(250deg); } }
@media (max-width: 920px) {
    .nav-wrap, .hero, .page-hero, .ai-panel, .contact-layout, .footer-grid { grid-template-columns: 1fr; display: grid; }
    .nav-wrap { justify-items: start; }
    .main-nav { justify-content: flex-start; }
    .search-strip { grid-template-columns: 1fr; }
    .grid.cards-3, .grid.cards-4, .partner-wall { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hero-card .floating-stats { grid-template-columns: 1fr; position: static; padding: 14px; background: #000; }
}
@media (max-width: 600px) {
    .main-nav a { width: 100%; text-align: center; background: #f7f7fb; border-color: #000; }
    .fake-search { border-radius: 24px; flex-direction: column; }
    .fake-search button { min-height: 48px; }
    .grid.cards-3, .grid.cards-4, .partner-wall { grid-template-columns: 1fr; }
    .hero { padding-top: 18px; }
    h1 { font-size: 42px; }
    .section { padding-top: 54px; }
    .btn { width: 100%; }
}