:root{
  --ink:#12100e; --paper:#f6f0e3; --muted:#a89f8d; --line:#2a251f;
  --amber:#e8770e; --amber-2:#ffa544; --card:#1b1714;
  --radius:14px; --max:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--ink); color:var(--paper);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
  background-image:radial-gradient(1200px 400px at 50% -180px, rgba(232,119,14,.18), transparent 70%);
}
a{color:var(--amber-2);text-decoration:none}
a:hover{text-decoration:underline}
kbd{background:#241f19;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:1px 6px;font-size:.85em;color:#fff}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.top{display:flex;align-items:center;gap:24px;justify-content:space-between;
  max-width:var(--max);margin:0 auto;padding:18px 20px 6px}
.brand{font-weight:800;letter-spacing:-.02em;color:var(--paper);font-size:1.05rem}
.brand-mark{color:var(--amber)}
.nav{display:flex;gap:18px;flex-wrap:wrap;font-size:.92rem}
.nav a{color:var(--muted)}
.nav a:hover{color:var(--paper);text-decoration:none}
.hero{padding:34px 0 18px;max-width:760px}
.eyebrow{margin:0 0 6px;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--amber)}
.hero h1{margin:0;font-size:clamp(2.1rem,6vw,3.4rem);line-height:1.05;letter-spacing:-.03em}
.lede{margin:12px 0 0;font-size:1.08rem;color:#cfc5b1}
.stage{position:relative;width:100%;aspect-ratio:16/9;background:#000;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;margin:22px 0 0;box-shadow:0 24px 60px -30px rgba(0,0,0,.9)}
.stage[data-gf-state="playing"]{border-color:rgba(232,119,14,.5)}
.cover{position:absolute;inset:0;display:flex;align-items:center;justify-content:flex-end;flex-direction:column;gap:14px;padding-bottom:7%}
.cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;
  background:#0e0c0a;filter:saturate(.95) brightness(.7)}
.cover::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(18,16,14,.05) 0%,rgba(18,16,14,.15) 55%,rgba(18,16,14,.8) 100%)}
.play{position:relative;z-index:2;appearance:none;border:0;cursor:pointer;
  background:linear-gradient(180deg,var(--amber-2),var(--amber));color:#1a1208;
  font:700 1.02rem/1 inherit;letter-spacing:.02em;padding:16px 28px;border-radius:999px;
  box-shadow:0 10px 30px -10px rgba(232,119,14,.9);transition:transform .15s ease}
.play:hover{transform:translateY(-1px)}
.loader{position:absolute;inset:0;display:none;align-items:center;justify-content:center;gap:10px;
  font-size:.95rem;color:#e9dfc9;background:#0e0c0a;z-index:3}
.stage[data-gf-state="loading"] .loader{display:flex}
.loader span{width:14px;height:14px;border-radius:50%;border:2px solid var(--amber);border-top-color:transparent;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.stage-bar{display:flex;justify-content:space-between;align-items:center;margin:10px 0 0;font-size:.88rem;color:var(--muted)}
.ghost{appearance:none;background:transparent;border:1px solid var(--line);color:var(--muted);
  border-radius:999px;padding:6px 14px;cursor:pointer;font:inherit}
.ghost:hover{color:var(--paper);border-color:var(--amber)}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:34px;margin:46px 0 0}
.cols h2,.faq h2{font-size:1.18rem;margin:0 0 12px;letter-spacing:-.01em}
.keys,.ticks{margin:0;padding-left:18px;color:#cfc5b1}
.keys li,.ticks li{margin:6px 0}
.more{font-size:.92rem}
.faq{margin:52px 0 20px;border-top:1px solid var(--line);padding-top:26px}
.faq details{border-bottom:1px solid var(--line);padding:12px 0}
.faq summary{cursor:pointer;font-weight:600}
.faq p{color:#cfc5b1;margin:8px 0 0}
.prose{max-width:760px;padding:26px 0 40px}
.prose h1{font-size:clamp(1.8rem,4.5vw,2.6rem);line-height:1.1;letter-spacing:-.02em;margin:0 0 16px}
.prose h2{margin:32px 0 10px;font-size:1.25rem}
.prose h3{margin:24px 0 8px;font-size:1.05rem}
.prose p,.prose li{color:#cfc5b1}
.prose ul{padding-left:20px}
.meta{color:var(--muted);font-size:.86rem;margin-top:-6px}
.postlist{list-style:none;padding:0;margin:18px 0}
.postlist li{padding:14px 0;border-bottom:1px solid var(--line)}
.postlist span{display:block;color:var(--muted);font-size:.9rem}
.legal p{font-size:.95rem}
.foot{border-top:1px solid var(--line);margin-top:40px;padding:26px 20px 40px}
.foot-in{max-width:var(--max);margin:0 auto;color:var(--muted);font-size:.88rem}
.foot .links a{color:var(--muted)}
.foot .copy{margin-top:14px;font-size:.8rem}
@media (max-width:720px){
  .cover{padding-bottom:4%}
  .play{padding:11px 20px;font-size:.9rem}
  .cols{grid-template-columns:1fr;gap:24px}
  .nav{display:none}
  .stage{border-radius:10px}
}

.engage{display:flex;align-items:center;gap:10px;margin:26px 0 6px;flex-wrap:wrap}
.pill{appearance:none;border:1px solid var(--line);background:#1f1a15;color:var(--paper);
  border-radius:999px;padding:9px 18px;font:inherit;font-size:.92rem;cursor:pointer}
.pill:hover{border-color:var(--amber);color:var(--amber-2)}
.pill[aria-pressed="true"]{background:var(--amber);border-color:var(--amber);color:#1a1208}
.count{color:var(--muted);font-size:.9rem}
.hint{color:var(--amber-2);font-size:.86rem}
.comments{margin:38px 0 10px;border-top:1px solid var(--line);padding-top:24px;max-width:760px}
.comments h2{font-size:1.15rem;margin:0 0 14px}
.comment{border-left:2px solid var(--line);padding:4px 0 4px 14px;margin:12px 0}
.c-head{margin:0;font-size:.88rem;color:var(--muted)}
.c-head b{color:var(--paper)}
.c-text{margin:4px 0 0;color:#cfc5b1}
.empty{color:var(--muted);font-size:.92rem}
.cform{display:grid;gap:10px;margin:16px 0 30px}
.cform input,.cform textarea{background:#17130f;border:1px solid var(--line);border-radius:10px;
  padding:11px 13px;color:var(--paper);font:inherit;font-size:.95rem;width:100%;resize:vertical}
.cform input:focus,.cform textarea:focus{outline:2px solid rgba(232,119,14,.4);outline-offset:0;border-color:var(--amber)}
.cform .pill{justify-self:start}

/* 引擎用 hidden 属性藏元素，作者样式会盖掉 UA 的 display:none，这里显式兜住 */
[hidden]{display:none !important}
.cover[hidden],.loader[hidden]{display:none !important}

/* 封面：整图完整显示，四周用同一张图模糊填充，避免裁掉地面 */
.cover{background:#0e0c0a}
.cover-bg{position:absolute;inset:0;background-size:cover;background-position:center;
  filter:blur(18px) brightness(.5) saturate(.9);transform:scale(1.12)}
.cover img{object-fit:contain;filter:none;z-index:1}
.cover .play{z-index:3}