:root{
  --bg:#f4f5f8;--card:#ffffff;--soft:#eef0f5;--border:#e6e8ef;--border2:#d7dbe5;
  --text:#171b24;--muted:#646c7e;--faint:#99a0af;
  --gold:#dd9b1f;--gg:linear-gradient(135deg,#f0b429,#d4870f);
  --green:#16a34a;--greenbg:#e7f6ec;--greentx:#15803d;
  --red:#dc2626;--redbg:#fdebeb;--redtx:#b91c1c;
  --blue:#2f6fed;--bluebg:#e9eefc;--bluetx:#2f55c7;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 2px 6px rgba(16,24,40,.05);
  --shadow2:0 6px 22px rgba(16,24,40,.10);
}
body.dark{
  --bg:#0b0e15;--card:#121724;--soft:#1a2030;--border:#222b3c;--border2:#343f54;
  --text:#f1f4f9;--muted:#9aa3b6;--faint:#697186;
  --greenbg:rgba(70,200,120,.14);--greentx:#46d07d;--green:#46d07d;
  --redbg:rgba(255,107,107,.14);--redtx:#ff7a7a;--red:#ff7a7a;
  --bluebg:rgba(80,130,255,.16);--bluetx:#7aa0ff;--blue:#7aa0ff;
  --shadow:0 1px 2px rgba(0,0,0,.3);--shadow2:0 10px 34px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block}
button{font-family:inherit;cursor:pointer}
.num{font-variant-numeric:tabular-nums}
.wrap{width:100%;margin:0;padding:0 clamp(16px,3vw,64px) 80px}
nav,.nav{position:sticky;top:0;z-index:30;background:var(--card);border-bottom:1px solid var(--border)}
.nav-in{width:100%;padding:0 clamp(16px,3vw,64px);height:62px;display:flex;align-items:center;gap:18px;justify-content:space-between}
.word{font-family:'Sora',sans-serif;font-weight:800;font-size:22px;letter-spacing:-.8px;color:var(--text);flex:none}
.word .b{background:var(--gg);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-r{display:flex;align-items:center;gap:16px;flex:none}
.nav-link{color:var(--muted);font-size:14px;font-weight:500}
.nav-link:hover{color:var(--text)}
.icbtn{width:38px;height:38px;border-radius:50%;border:1px solid var(--border);background:var(--card);color:var(--muted);display:flex;align-items:center;justify-content:center;font-size:18px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--blue);display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:700;text-transform:uppercase}
.signin{font-size:13px;font-weight:600;color:#fff;background:var(--blue);padding:8px 15px;border-radius:999px;white-space:nowrap}
.signin:hover{filter:brightness(1.06)}
.btn{height:42px;border:none;border-radius:10px;background:var(--blue);color:#fff;font-weight:600;font-size:14px;padding:0 18px;cursor:pointer}
.btn:hover{filter:brightness(1.05)}
.btn.sm{height:34px;font-size:13px;padding:0 12px}
.btn.ghost{background:var(--soft);color:var(--text)}
.btn.danger{background:transparent;color:var(--red);padding:0 8px}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px;box-shadow:var(--shadow)}
.muted{color:var(--muted);font-size:13px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:var(--text);color:var(--bg);padding:10px 18px;border-radius:10px;font-size:13px;font-weight:500;opacity:0;transition:.25s;z-index:50;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}