:root{
  --bg:#fbf7f2;
  --panel:#fffdfb;
  --ink:#202124;
  --muted:#756f68;
  --line:#ece3da;
  --accent:#e85d75;
  --accent-2:#8a6cf0;
  --soft:#f4ece4;
  --shadow:0 24px 80px rgba(32,33,36,.08);
  --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:linear-gradient(180deg,#fffaf7 0%,var(--bg) 58%,#fff 100%);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75;letter-spacing:.01em}
a{color:inherit;text-decoration:none}
img,video{max-width:100%;display:block}
button,input,textarea{font:inherit}
.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:30;background:rgba(255,250,247,.86);backdrop-filter:blur(20px);border-bottom:1px solid rgba(236,227,218,.78)}
.nav-shell{max-width:1180px;margin:0 auto;padding:18px 22px 10px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand-mark,.footer-logo{display:inline-flex;align-items:center}
.brand-mark img,.footer-logo img{height:36px;width:auto}
.nav-links{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.nav-links a{padding:9px 15px;border-radius:999px;color:#4a4641;font-size:15px;transition:background .2s ease,transform .2s ease,color .2s ease}
.nav-links a:hover{background:#fff;color:var(--accent);transform:translateY(-1px)}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;color:#5f5a55}
.search-shell{max-width:1180px;margin:0 auto;padding:0 22px 18px;display:grid;grid-template-columns:1fr auto;gap:12px;align-items:start}
.search-shell input{width:100%;border:1px solid var(--line);background:#fff;border-radius:999px;padding:13px 18px;outline:none;box-shadow:0 10px 30px rgba(32,33,36,.04)}
.search-shell input:focus{border-color:rgba(232,93,117,.5);box-shadow:0 0 0 4px rgba(232,93,117,.08)}
.search-shell button,.primary-btn,.ghost-btn{border:0;border-radius:999px;padding:13px 20px;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}
.search-shell button,.primary-btn{background:var(--ink);color:#fff;box-shadow:0 18px 42px rgba(32,33,36,.13)}
.search-shell button:hover,.primary-btn:hover{transform:translateY(-2px);box-shadow:0 24px 54px rgba(32,33,36,.18)}
.ghost-btn{background:#fff;color:var(--ink);border:1px solid var(--line)}
.search-note{grid-column:1/-1;margin:0;color:var(--muted);font-size:13px;min-height:20px}
main{overflow:hidden}
.container{max-width:1180px;margin:0 auto;padding:0 22px}
.hero{padding:82px 0 58px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(320px,.98fr);gap:42px;align-items:center}
.eyebrow{display:inline-flex;gap:8px;align-items:center;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.72);padding:7px 12px;color:#625c55;font-size:14px;margin:0 0 22px}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px rgba(232,93,117,.12)}
h1,h2,h3,h4{line-height:1.18;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:clamp(42px,7vw,76px);margin:0 0 22px}
h2{font-size:clamp(30px,4vw,46px);margin:0 0 16px}
h3{font-size:22px;margin:0 0 10px}
p{color:var(--muted)}
.lead{font-size:18px;max-width:720px;margin:0 0 28px;color:#5d5751}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin:28px 0}
.hero-card{position:relative;border-radius:44px;overflow:hidden;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line)}
.hero-card figure{margin:0}
.hero-card img{aspect-ratio:16/10;object-fit:cover}
.image-desc{margin:0;padding:14px 18px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);background:rgba(255,253,251,.86)}
.floating-stat{position:absolute;right:22px;bottom:70px;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:22px;padding:14px 16px;box-shadow:0 18px 50px rgba(32,33,36,.12)}
.floating-stat strong{display:block;font-size:26px;color:var(--ink);line-height:1.1}
.section{padding:72px 0}
.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:28px}
.section-head p{max-width:560px;margin:0}
.panel{background:rgba(255,253,251,.82);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.idea-panel{padding:38px;display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center}
.idea-list{display:grid;gap:14px;margin:0;padding:0;list-style:none}
.idea-list li{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px 18px;color:#5d5751}
.video-grid,.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.video-card{position:relative;overflow:hidden;border-radius:28px;background:#fff;border:1px solid var(--line);box-shadow:0 18px 60px rgba(32,33,36,.06);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.video-card:hover{transform:translateY(-6px);box-shadow:0 26px 70px rgba(32,33,36,.11);border-color:rgba(232,93,117,.35)}
.video-poster{position:relative;background:#151515;overflow:hidden}
.video-poster video,.video-poster img{width:100%;aspect-ratio:4/3;object-fit:cover;filter:saturate(.98)}
.play-button{position:absolute;inset:0;margin:auto;width:62px;height:62px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;opacity:0;transform:scale(.86);transition:opacity .2s ease,transform .2s ease;box-shadow:0 14px 34px rgba(32,33,36,.18)}
.play-button::before{content:"";margin-left:4px;border-left:16px solid var(--accent);border-top:11px solid transparent;border-bottom:11px solid transparent}
.video-card:hover .play-button,.video-card:focus-within .play-button{opacity:1;transform:scale(1)}
.video-body{padding:18px}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 0}
.tag{font-size:12px;color:#7a625f;background:#fff4f2;border:1px solid #f2dedb;border-radius:999px;padding:5px 9px}
.meta-line{display:flex;gap:12px;flex-wrap:wrap;color:#807a73;font-size:13px;margin-top:10px}
.topic-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.topic-item,.board-card,.review-card,.faq-card,.rank-card,.content-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.topic-item:hover,.board-card:hover,.content-card:hover{transform:translateY(-4px);border-color:rgba(232,93,117,.32);box-shadow:0 20px 56px rgba(32,33,36,.08)}
.topic-item span,.board-card span,.rank-num{display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:34px;padding:0 10px;border-radius:999px;background:var(--soft);color:var(--accent);font-weight:700;margin-bottom:14px}
.board-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-box{padding:24px;background:#fff;border:1px solid var(--line);border-radius:24px;text-align:center}
.stat-box strong{display:block;font-size:34px;line-height:1;color:var(--ink)}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review-card blockquote{margin:0;color:#4f4a45}
.review-card cite{display:block;margin-top:14px;color:var(--muted);font-style:normal;font-size:14px}
.faq-list{display:grid;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px 20px}
summary{cursor:pointer;font-weight:700;color:var(--ink)}
details p{margin-bottom:0}
.join-panel{padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
.contact-form{display:grid;gap:12px}
.contact-form input,.contact-form textarea{border:1px solid var(--line);border-radius:18px;background:#fff;padding:13px 15px;outline:none}
.contact-form textarea{min-height:110px;resize:vertical}
.breadcrumb{padding:26px 0 0;color:var(--muted);font-size:14px}
.breadcrumb a{color:var(--accent)}
.page-hero{padding:56px 0 36px}
.page-hero h1{font-size:clamp(36px,5vw,58px)}
.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.social-row{display:flex;gap:10px;flex-wrap:wrap}
.social-row button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 14px;cursor:pointer;color:#5d5751}
.site-footer{margin-top:70px;background:#171717;color:#fff;padding:54px 0 40px}
.site-footer .footer-grid{max-width:1180px;margin:0 auto;padding:0 22px;display:grid;grid-template-columns:1.2fr .7fr 1fr;gap:34px}
.site-footer p,.site-footer a,.site-footer li{color:#d7d1ca}
.site-footer h2{font-size:18px;color:#fff;margin:0 0 12px}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.domain-line strong,.update-line{color:#fff}
@media (max-width:980px){
  .hero-grid,.idea-panel,.join-panel,.site-footer .footer-grid{grid-template-columns:1fr}
  .video-grid,.stats-strip{grid-template-columns:repeat(2,1fr)}
  .topic-list,.board-grid,.review-grid,.content-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .nav-toggle{display:inline-flex}
  .nav-links{display:none;position:absolute;left:22px;right:22px;top:66px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}
  .nav-links.is-open{display:grid;grid-template-columns:1fr 1fr}
  .search-shell{grid-template-columns:1fr;padding-bottom:14px}
  .hero{padding:48px 0 36px}
  .section{padding:46px 0}
  .section-head{display:block}
  .video-grid,.topic-list,.board-grid,.review-grid,.stats-strip,.content-grid,.two-col{grid-template-columns:1fr}
  .floating-stat{position:static;border-radius:0;border-left:0;border-right:0;border-bottom:0}
  h1{font-size:40px}
}