:root{
  --bg:#f7f4ef;
  --panel:#fffdf9;
  --text:#1f252d;
  --muted:#6d7480;
  --line:rgba(31,37,45,.12);
  --strong:#0f1720;
  --soft:#e9dfd0;
  --accent:#9b7b4b;
  --accent-2:#d9c7a7;
  --shadow:0 24px 80px rgba(31,37,45,.08);
  --radius:28px;
  --max:1180px;
}
*{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",sans-serif;
  color:var(--text);
  background:radial-gradient(circle at top left,rgba(217,199,167,.35),transparent 32rem),var(--bg);
  line-height:1.72;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;height:auto}
button,input,textarea{font:inherit}
.sr-only{position:absolute;width:1px;height:1px;clip:rect(0 0 0 0);overflow:hidden;white-space:nowrap}
.site-header{
  width:min(var(--max),calc(100% - 40px));
  margin:22px auto 0;
  padding:14px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,253,249,.82);
  backdrop-filter:blur(18px);
  position:sticky;
  top:14px;
  z-index:20;
  box-shadow:0 10px 40px rgba(31,37,45,.05);
}
.brand-lockup{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand-lockup img{border-radius:50%;box-shadow:0 8px 24px rgba(155,123,75,.18)}
.brand-lockup span{display:grid;line-height:1.1}
.brand-lockup strong{font-size:18px;letter-spacing:.04em;color:var(--strong)}
.brand-lockup em{font-style:normal;font-size:12px;color:var(--muted);margin-top:4px}
.top-nav{display:flex;gap:4px;align-items:center;overflow:auto;scrollbar-width:none}
.top-nav::-webkit-scrollbar{display:none}
.top-nav a{font-size:14px;color:var(--muted);padding:10px 13px;border-radius:999px;white-space:nowrap;transition:background .2s ease,color .2s ease,transform .2s ease}
.top-nav a:hover,.top-nav a.is-active{background:var(--strong);color:#fff;transform:translateY(-1px)}
.search-wrap{
  width:min(820px,calc(100% - 40px));
  margin:20px auto 0;
  display:grid;
  grid-template-columns:1fr auto;
  gap:10px;
  align-items:center;
}
.search-wrap input{border:1px solid var(--line);background:rgba(255,253,249,.9);border-radius:999px;padding:15px 18px;outline:none;color:var(--text);box-shadow:0 8px 28px rgba(31,37,45,.04)}
.search-wrap input:focus{border-color:rgba(155,123,75,.55);box-shadow:0 0 0 4px rgba(155,123,75,.08)}
.search-wrap button,.btn,.join-form button{border:0;border-radius:999px;background:var(--strong);color:#fff;padding:14px 20px;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;box-shadow:0 14px 30px rgba(31,37,45,.16)}
.search-wrap button:hover,.btn:hover,.join-form button:hover{transform:translateY(-2px);box-shadow:0 20px 40px rgba(31,37,45,.18)}
.search-hint{grid-column:1/-1;margin:0 8px;font-size:13px;color:var(--muted)}
.section-shell{width:min(var(--max),calc(100% - 40px));margin:88px auto}
.hero{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(320px,.78fr);gap:44px;align-items:center;min-height:620px}
.eyebrow{font-size:13px;color:var(--accent);letter-spacing:.18em;text-transform:uppercase;margin:0 0 14px;font-weight:700}
h1,h2,h3{line-height:1.15;color:var(--strong);letter-spacing:-.04em;margin:0}
h1{font-size:clamp(42px,7vw,82px);max-width:860px}
h2{font-size:clamp(30px,4.5vw,54px)}
h3{font-size:22px;letter-spacing:-.02em}
.hero-text,.sub-hero p,.intro-grid p{font-size:18px;color:var(--muted);max-width:760px;margin:22px 0 0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}.btn{display:inline-flex;align-items:center;justify-content:center}.btn.ghost{background:rgba(255,253,249,.7);color:var(--strong);border:1px solid var(--line);box-shadow:none}
.hero-card{position:relative;overflow:hidden;border-radius:var(--radius);background:var(--panel);box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.72);margin:0}.hero-card img{aspect-ratio:4/3;object-fit:cover}.hero-card figcaption{position:absolute;left:18px;right:18px;bottom:18px;padding:12px 14px;border-radius:18px;background:rgba(255,253,249,.74);backdrop-filter:blur(14px);font-size:13px;color:var(--muted)}
.play-badge{position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%) scale(.86);width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:rgba(255,253,249,.85);color:var(--strong);opacity:0;transition:opacity .22s ease,transform .22s ease;box-shadow:0 20px 50px rgba(31,37,45,.18)}
.video-card:hover .play-badge,.video-card.is-hover .play-badge{opacity:1;transform:translate(-50%,-50%) scale(1)}
.video-card img{transition:transform .35s ease,filter .35s ease}.video-card:hover img{transform:scale(1.035);filter:saturate(1.02)}
.intro-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;padding:52px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,253,249,.62)}
.section-heading{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:28px}.text-link{font-weight:700;color:var(--accent);white-space:nowrap}.text-link:hover{text-decoration:underline;text-underline-offset:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.video-grid{align-items:stretch}.topic-card,.board-card,.review-card,.feature-card,.rank-card,.rule-grid article,.profile-panel,.plan-list{background:rgba(255,253,249,.78);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 45px rgba(31,37,45,.045);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}.topic-card:hover,.board-card:hover,.review-card:hover,.feature-card:hover,.rank-card:hover,.rule-grid article:hover{transform:translateY(-4px);border-color:rgba(155,123,75,.3);box-shadow:0 22px 60px rgba(31,37,45,.08)}
.topic-card{overflow:hidden}.media-wrap{position:relative;overflow:hidden;background:var(--soft)}.media-wrap img{aspect-ratio:16/11;object-fit:cover;width:100%}.video-chip{position:absolute;left:14px;top:14px;border-radius:999px;background:rgba(15,23,32,.78);color:#fff;font-size:12px;padding:6px 10px;backdrop-filter:blur(10px)}.card-body{padding:22px}.card-body p,.board-card p,.review-card p,.feature-card p,.rule-grid p{color:var(--muted);margin:12px 0 0}.metric-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px;color:var(--muted);font-size:13px}.metric-row span{padding:6px 10px;border-radius:999px;background:rgba(31,37,45,.05)}.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.tag-row span{font-size:12px;color:var(--accent);background:rgba(155,123,75,.09);border:1px solid rgba(155,123,75,.12);border-radius:999px;padding:5px 9px}
.board-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.board-card{padding:26px}.board-count{display:inline-flex;margin-bottom:18px;color:var(--accent);font-weight:700;font-size:13px}
.stats-panel{display:grid;grid-template-columns:.7fr 1.3fr;gap:36px;align-items:center;background:var(--strong);color:#fff;border-radius:calc(var(--radius) + 8px);padding:54px}.stats-panel h2{color:#fff}.stats-panel .eyebrow{color:var(--accent-2)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stats-grid div{border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:22px;background:rgba(255,255,255,.06)}.stats-grid strong{display:block;font-size:30px;letter-spacing:-.04em}.stats-grid span{font-size:13px;color:rgba(255,255,255,.7)}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.review-card{padding:24px}.review-card h3{font-size:18px;margin-top:20px}.review-card span{color:var(--muted);font-size:13px}.faq-list{display:grid;gap:12px}.faq-list details{background:rgba(255,253,249,.8);border:1px solid var(--line);border-radius:20px;padding:18px 20px}.faq-list summary{cursor:pointer;font-weight:800;color:var(--strong)}.faq-list p{color:var(--muted);margin:12px 0 0}.join-panel{display:grid;grid-template-columns:1fr .85fr;gap:34px;background:linear-gradient(135deg,rgba(255,253,249,.9),rgba(233,223,208,.72));border:1px solid var(--line);border-radius:calc(var(--radius) + 8px);padding:52px}.join-panel p{color:var(--muted)}.join-form{display:grid;gap:12px}.join-form input,.join-form textarea{width:100%;border:1px solid var(--line);border-radius:18px;padding:14px 16px;background:rgba(255,255,255,.78);outline:none}.join-form textarea{min-height:110px;resize:vertical}.join-form input:focus,.join-form textarea:focus{border-color:rgba(155,123,75,.55);box-shadow:0 0 0 4px rgba(155,123,75,.08)}
.sub-hero{padding:72px 0 20px}.sub-hero h1{font-size:clamp(38px,6vw,70px)}.feature-list{display:grid;gap:16px}.feature-card{display:grid;grid-template-columns:220px 1fr;gap:22px;padding:18px;align-items:center}.feature-card img{border-radius:20px;aspect-ratio:3/2;object-fit:cover}.rank-list{display:grid;gap:12px}.rank-card{display:grid;grid-template-columns:64px 1fr auto;gap:18px;align-items:center;padding:22px}.rank-card>strong{font-size:28px;color:var(--accent)}.rule-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.rule-grid article{padding:26px}.profile-panel{padding:40px}.profile-panel .stats-grid div{background:var(--strong);color:#fff}.plan-list{padding:28px;overflow:hidden}.plan-list pre{white-space:pre-wrap;word-break:break-word;background:rgba(31,37,45,.04);border:1px solid var(--line);border-radius:18px;padding:18px;color:#28313a;line-height:1.6;font-size:13px;overflow:auto}.site-footer{width:min(var(--max),calc(100% - 40px));margin:100px auto 28px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,253,249,.76);display:grid;grid-template-columns:1fr auto;gap:24px;align-items:start}.footer-brand{display:flex;gap:14px;align-items:flex-start}.footer-brand img{border-radius:50%}.footer-brand strong{font-size:20px}.footer-brand p,.footer-note{margin:4px 0 0;color:var(--muted);font-size:13px}.site-footer nav{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}.site-footer nav a{font-size:13px;color:var(--muted);padding:8px 10px;border-radius:999px;background:rgba(31,37,45,.04)}.footer-note{grid-column:1/-1;border-top:1px solid var(--line);padding-top:16px}
@media (max-width:980px){.site-header{align-items:flex-start;border-radius:28px;flex-direction:column}.top-nav{width:100%}.hero,.intro-grid,.stats-panel,.join-panel{grid-template-columns:1fr;min-height:auto}.card-grid,.board-grid,.review-grid{grid-template-columns:repeat(2,1fr)}.stats-grid{grid-template-columns:repeat(2,1fr)}.site-footer{grid-template-columns:1fr}.site-footer nav{justify-content:flex-start}.rank-card{grid-template-columns:48px 1fr}.rank-card .metric-row{grid-column:2}.feature-card{grid-template-columns:160px 1fr}}
@media (max-width:640px){.site-header,.section-shell,.site-footer,.search-wrap{width:min(100% - 24px,var(--max))}.section-shell{margin:58px auto}.search-wrap{grid-template-columns:1fr}.hero{gap:28px}.hero-actions{flex-direction:column}.btn,.search-wrap button{width:100%}h1{font-size:38px}h2{font-size:30px}.card-grid,.board-grid,.review-grid,.rule-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr}.stats-panel,.join-panel,.intro-grid{padding:28px}.feature-card{grid-template-columns:1fr}.rank-card{grid-template-columns:1fr}.rank-card .metric-row{grid-column:auto}.hero-card figcaption{position:static;margin:12px}.site-footer nav{display:grid;grid-template-columns:1fr 1fr}.top-nav a{font-size:13px;padding:9px 11px}}