:root {
    --bg: #fbfcff;
    --paper: rgba(255, 255, 255, .82);
    --ink: #14172f;
    --muted: #646b85;
    --line: rgba(115, 127, 160, .18);
    --pink: #ff5bd5;
    --blue: #55d7ff;
    --violet: #897bff;
    --mint: #6affdf;
    --gold: #ffe48a;
    --radius: 28px;
    --shadow: 0 24px 70px rgba(80, 91, 155, .18);
    --shadow-soft: 0 18px 48px rgba(122, 132, 190, .16);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 8% 2%, rgba(255, 91, 213, .22), transparent 32rem),
        radial-gradient(circle at 92% 12%, rgba(85, 215, 255, .24), transparent 35rem),
        linear-gradient(180deg, #fff 0%, #f7fbff 42%, #fff 100%);
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; display: block; }
.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;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    padding: 16px min(5vw, 56px) 12px;
    background: rgba(251, 252, 255, .78);
    backdrop-filter: blur(22px);
    border-bottom: 1px solid var(--line);
}
.top-glow {
    position: absolute;
    inset: 0 0 auto 0;
    height: 2px;
    background: linear-gradient(90deg, var(--pink), var(--blue), var(--violet), var(--mint));
}
.nav-shell, .search-row, main, .site-footer {
    max-width: 1240px;
    margin: 0 auto;
}
.nav-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.brand-lockup, .footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 900;
}
.brand-lockup img, .footer-logo img { filter: drop-shadow(0 10px 24px rgba(85, 215, 255, .35)); }
.brand-lockup strong, .footer-logo span {
    display: block;
    font-size: 1.4rem;
    letter-spacing: .04em;
}
.brand-lockup em {
    display: block;
    color: var(--muted);
    font-size: .78rem;
    font-style: normal;
    font-weight: 700;
}
.nav-links { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.nav-links a, .footer-links a {
    padding: 10px 14px;
    border-radius: 999px;
    color: #2b3152;
    font-size: .95rem;
    font-weight: 700;
    transition: transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.nav-links a:hover, .nav-links a.is-active, .footer-links a:hover {
    background: linear-gradient(135deg, rgba(255, 91, 213, .16), rgba(85, 215, 255, .18));
    box-shadow: 0 10px 25px rgba(112, 124, 205, .13);
    transform: translateY(-1px);
}
.nav-toggle { display: none; border: 0; background: #fff; border-radius: 16px; padding: 10px 14px; box-shadow: var(--shadow-soft); font-size: 1.2rem; }
.search-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px; align-items: center; padding-top: 14px; }
.fake-search {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px;
    box-shadow: 0 16px 42px rgba(98, 117, 180, .12);
}
.fake-search input {
    flex: 1;
    min-width: 180px;
    border: 0;
    outline: 0;
    background: transparent;
    padding: 11px 14px;
    font-size: .96rem;
    color: var(--ink);
}
.fake-search button, .btn-primary, .btn-ghost {
    border: 0;
    cursor: pointer;
    border-radius: 999px;
    padding: 12px 18px;
    font-weight: 900;
    transition: transform .25s ease, box-shadow .25s ease;
}
.fake-search button, .btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--pink), var(--blue));
    box-shadow: 0 16px 34px rgba(255, 91, 213, .24);
}
.btn-ghost {
    color: #28304f;
    background: rgba(255, 255, 255, .76);
    border: 1px solid var(--line);
}
.fake-search button:hover, .btn-primary:hover, .btn-ghost:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.search-tip { color: var(--muted); font-size: .88rem; margin: 0; white-space: nowrap; }
main { padding: 42px min(5vw, 56px) 70px; }
.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.02fr) minmax(320px, .98fr);
    gap: 34px;
    align-items: center;
    min-height: 620px;
}
.hero-copy, .hero-visual, .glass-card, .panel, .video-card, .review-card, .faq-item, .expert-card, .topic-card, .contact-card, .cta-band {
    background: var(--paper);
    border: 1px solid rgba(255, 255, 255, .72);
    box-shadow: var(--shadow);
    backdrop-filter: blur(22px);
}
.hero-copy { padding: clamp(28px, 5vw, 58px); border-radius: 42px; position: relative; overflow: hidden; }
.hero-copy:before, .hero-visual:before, .panel:before, .cta-band:before {
    content: "";
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255,91,213,.8), rgba(85,215,255,.65), rgba(137,123,255,.55));
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask-composite: exclude;
    pointer-events: none;
}
.eyebrow {
    margin: 0 0 10px;
    color: #6c35d7;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
}
h1, h2, h3 { margin: 0; line-height: 1.18; letter-spacing: -.03em; }
h1 { font-size: clamp(2.65rem, 7vw, 5.9rem); }
h2 { font-size: clamp(2rem, 4vw, 3.6rem); }
h3 { font-size: 1.25rem; }
p { color: var(--muted); }
.hero-copy .lead { font-size: clamp(1.05rem, 2vw, 1.28rem); margin: 22px 0 28px; color: #3a415e; }
.hero-actions, .tag-row, .chip-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.tag-row span, .chip-row span, .metric-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .72);
    border-radius: 999px;
    padding: 7px 11px;
    color: #47506e;
    font-size: .84rem;
    font-weight: 800;
}
.hero-visual {
    border-radius: 42px;
    padding: 18px;
    position: relative;
    overflow: hidden;
}
.hero-visual img { border-radius: 32px; aspect-ratio: 16/10; object-fit: cover; }
.floating-metrics {
    position: absolute;
    left: 30px;
    right: 30px;
    bottom: 30px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}
.metric-pill { justify-content: center; background: rgba(255,255,255,.82); box-shadow: 0 12px 28px rgba(65,80,140,.14); }
.section { margin-top: 82px; }
.module-head { max-width: 820px; margin: 0 0 28px; }
.module-head p:last-child { font-size: 1.05rem; }
.video-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.video-card { border-radius: var(--radius); overflow: hidden; transition: transform .25s ease, box-shadow .25s ease; position: relative; }
.video-card:hover { transform: translateY(-6px); box-shadow: 0 32px 90px rgba(93, 102, 174, .24); }
.video-poster { position: relative; min-height: 240px; overflow: hidden; background: #eef7ff; }
.video-poster img, .demo-video { width: 100%; height: 100%; min-height: 260px; object-fit: cover; }
.demo-video { position: absolute; inset: 0; opacity: 0; pointer-events: none; }
.play-badge {
    position: absolute;
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%) scale(.8);
    display: grid;
    place-items: center;
    width: 82px;
    height: 82px;
    border-radius: 50%;
    color: #fff;
    background: linear-gradient(135deg, var(--pink), var(--blue));
    box-shadow: 0 0 0 16px rgba(255,255,255,.28), 0 18px 45px rgba(255, 91, 213, .32);
    opacity: .88;
    transition: transform .25s ease, opacity .25s ease;
}
.video-card:hover .play-badge { transform: translate(-50%, -50%) scale(1.06); opacity: 1; }
.video-card:hover .video-poster:after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,91,213,.2), rgba(85,215,255,.18));
    animation: pulseGlow 1.4s ease-in-out infinite alternate;
}
@keyframes pulseGlow { from { opacity: .2; } to { opacity: .66; } }
.card-rank {
    position: absolute;
    top: 14px;
    left: 14px;
    border-radius: 999px;
    padding: 8px 12px;
    background: rgba(255,255,255,.82);
    font-weight: 900;
    color: #6c35d7;
}
.video-copy { padding: 22px; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 20px 0 0; }
.stats div { border-radius: 18px; background: rgba(245,248,255,.9); padding: 12px; }
.stats dt { color: var(--muted); font-size: .78rem; }
.stats dd { margin: 2px 0 0; font-weight: 900; color: #202746; }
.split { display: grid; grid-template-columns: minmax(0, .96fr) minmax(0, 1.04fr); gap: 24px; }
.panel, .glass-card { border-radius: var(--radius); padding: 26px; position: relative; }
.topic-list, .tool-list, .review-grid, .faq-grid, .expert-grid, .partner-wall, .contact-grid, .feature-grid { display: grid; gap: 18px; }
.topic-list { grid-template-columns: 1fr; }
.topic-card, .expert-card, .review-card, .faq-item, .contact-card { border-radius: 24px; padding: 22px; }
.topic-card h3, .expert-card h3, .review-card h3, .faq-item h3 { margin-bottom: 10px; }
.barrage { display: flex; flex-direction: column; gap: 10px; overflow: hidden; }
.barrage span {
    width: max-content;
    max-width: 100%;
    border-radius: 999px;
    padding: 9px 13px;
    background: linear-gradient(135deg, rgba(255, 91, 213, .12), rgba(85, 215, 255, .14));
    animation: drift 7s linear infinite alternate;
    color: #343b5c;
    font-weight: 800;
}
.barrage span:nth-child(2) { animation-duration: 8.5s; }
.barrage span:nth-child(3) { animation-duration: 9.5s; }
@keyframes drift { from { transform: translateX(0); } to { transform: translateX(34px); } }
.tool-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.tool-card { border-radius: 22px; padding: 22px; background: linear-gradient(145deg, rgba(255,255,255,.86), rgba(240,249,255,.78)); border: 1px solid var(--line); }
.expert-grid, .review-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.review-card { background: linear-gradient(145deg, rgba(255,255,255,.9), rgba(252,245,255,.72)); }
.review-card blockquote { margin: 0; color: #404761; }
.partner-wall { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.partner-wall span {
    display: grid;
    place-items: center;
    min-height: 82px;
    border-radius: 22px;
    background: rgba(255,255,255,.74);
    border: 1px solid var(--line);
    font-weight: 900;
    color: #36405f;
}
.faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.faq-item { background: rgba(255,255,255,.8); }
.contact-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.contact-card img { border-radius: 20px; margin-top: 12px; }
.cta-band {
    border-radius: 34px;
    padding: 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
    position: relative;
    overflow: hidden;
}
.breadcrumb { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; color: var(--muted); margin: 0 0 24px; font-weight: 800; }
.breadcrumb a { color: #5a4ee4; }
.page-hero { display: grid; grid-template-columns: 1fr .72fr; gap: 24px; align-items: center; }
.page-hero .panel { min-height: 330px; display: grid; align-content: center; }
.page-hero img { border-radius: 32px; box-shadow: var(--shadow); }
.feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.feature-card { border-radius: 24px; padding: 24px; background: rgba(255,255,255,.78); border: 1px solid var(--line); box-shadow: var(--shadow-soft); }
.site-footer { padding: 46px min(5vw, 56px); margin-bottom: 28px; border-radius: 42px; background: rgba(255,255,255,.78); border: 1px solid var(--line); box-shadow: var(--shadow-soft); }
.footer-grid { display: grid; grid-template-columns: .7fr 1.2fr .9fr; gap: 28px; align-items: center; }
.footer-qrs { display: flex; gap: 18px; justify-content: flex-end; }
.footer-qrs figure { margin: 0; text-align: center; color: var(--muted); font-size: .86rem; }
.footer-qrs img { border-radius: 18px; box-shadow: var(--shadow-soft); }
.footer-links { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 8px; }
.notice { border-left: 4px solid var(--pink); padding: 12px 16px; border-radius: 16px; background: rgba(255,255,255,.75); color: #47506e; }
@media (max-width: 1080px) {
    .hero, .split, .page-hero { grid-template-columns: 1fr; min-height: auto; }
    .expert-grid, .review-grid, .partner-wall { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .contact-grid, .feature-grid { grid-template-columns: 1fr 1fr; }
    .search-row { grid-template-columns: 1fr; }
    .search-tip { white-space: normal; }
}
@media (max-width: 760px) {
    .site-header { padding: 12px 16px; }
    .nav-toggle { display: block; }
    .nav-links {
        display: none;
        position: absolute;
        left: 16px;
        right: 16px;
        top: 78px;
        padding: 14px;
        border-radius: 24px;
        background: rgba(255,255,255,.96);
        box-shadow: var(--shadow);
    }
    .nav-links.is-open { display: grid; grid-template-columns: repeat(2, 1fr); }
    .brand-lockup em { display: none; }
    main { padding: 26px 16px 48px; }
    .hero-copy, .hero-visual { border-radius: 30px; }
    .video-grid, .tool-list, .expert-grid, .review-grid, .faq-grid, .partner-wall, .contact-grid, .feature-grid, .footer-grid { grid-template-columns: 1fr; }
    .stats { grid-template-columns: 1fr; }
    .floating-metrics { position: static; margin-top: 12px; grid-template-columns: 1fr; }
    .footer-qrs { justify-content: flex-start; flex-wrap: wrap; }
    .cta-band { flex-direction: column; align-items: flex-start; }
    .fake-search { border-radius: 24px; align-items: stretch; flex-direction: column; }
    .fake-search input { width: 100%; }
}