:root{--bg:#0e1013;--bg-soft:#14171d;--card:#181c23;--card-hi:#1f242d;--line:#272d38;--ink:#e9e7e2;--ink-dim:#9aa3b2;--ink-faint:#6b7484;--accent:#8c6bff;--accent-soft:#2a2140;--gold:#f0b429;--t1:#5b6572;--t2:#4f8a7b;--t3:#4a7fc1;--t4:#9a6ad6;--t5:#e5a83b;--danger:#e05a5a;--radius:14px;--maxw:1080px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Helvetica Neue,Arial,PingFang SC,Microsoft YaHei,sans-serif;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}.site-header{border-bottom:1px solid var(--line);position:-webkit-sticky;position:sticky;top:0;background:rgba(14,16,19,.9);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:50}.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:20px}.brand{font-weight:700;letter-spacing:-.02em;font-size:17px;color:var(--ink)}.brand span{color:var(--accent)}.site-nav{display:flex;gap:22px;font-size:14px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}.site-nav::-webkit-scrollbar{display:none}.site-nav a{color:var(--ink-dim);white-space:nowrap}.site-nav a:hover{color:var(--ink);text-decoration:none}.nav-sm-only{display:none}.hero{padding:64px 0 40px}.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.12;letter-spacing:-.03em;margin:0 0 18px;font-weight:750}.hero p.lede{font-size:18px;color:var(--ink-dim);max-width:640px;margin:0 0 28px}.eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:14px;font-weight:600}.demo-caption{font-size:13px;color:var(--ink-faint);margin:26px 0 10px}.score-demo{list-style:none;display:flex;gap:10px;flex-wrap:wrap;padding:0;margin:0}.score-demo li{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:7px 16px;font-size:15px}.d-score{font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.d-score.t1{color:var(--t1)}.d-score.t2{color:var(--t2)}.d-score.t3{color:var(--t3)}.d-score.t4{color:var(--t4)}.d-score.t5{color:var(--t5)}.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;background:var(--accent);color:#fff;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:transform .12s ease,filter .12s ease}.btn:hover{filter:brightness(1.1);text-decoration:none}.btn:active{transform:scale(.985)}.btn.ghost{background:transparent;border-color:var(--line);color:var(--ink)}.btn.ghost:hover{border-color:var(--ink-faint)}.game{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin:8px 0 36px}.game-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}.timer{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-size:40px;font-weight:750;letter-spacing:-.03em;line-height:1;color:var(--ink)}.timer.low{color:var(--danger)}.timer-label{font-size:10px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);margin-top:3px}.game-meta{display:flex;gap:26px;font-size:13px;color:var(--ink-faint)}.game-meta b{display:block;font-size:20px;color:var(--ink);font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.input-row{display:flex;gap:10px}.input-row input{flex:1 1;background:var(--bg);border:1px solid var(--line);border-radius:10px;color:var(--ink);padding:14px 16px;font-size:17px;outline:none;font-family:inherit}.input-row input:focus{border-color:var(--accent)}.input-row input::placeholder{color:var(--ink-faint)}.input-row button{padding:0 22px;border-radius:10px;background:var(--accent);color:#fff;border:none;font-weight:600;font-size:15px;cursor:pointer;font-family:inherit}.input-row button:disabled{opacity:.5;cursor:not-allowed}.feedback{min-height:26px;margin-top:12px;font-size:14px}.feedback.hit{color:var(--ink)}.feedback.miss{color:var(--ink-faint)}.feedback.warn{color:var(--gold)}.turn-list{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-direction:column;gap:6px;max-height:240px;overflow-y:auto}.turn-list li{display:flex;align-items:center;gap:10px;font-size:15px;padding:7px 10px;background:var(--bg-soft);border-radius:8px}.turn-list .pts{margin-left:auto;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--ink-dim);font-size:13px}.chip{display:inline-flex;align-items:center;justify-content:center;min-width:30px;padding:1px 8px;border-radius:999px;font-size:11px;font-weight:700;letter-spacing:.03em;border:1px solid}.chip.t1{color:var(--t1)}.chip.t2{color:var(--t2)}.chip.t3{color:var(--t3)}.chip.t4{color:var(--t4)}.chip.t5{color:var(--t5)}.atlas{margin:40px 0}.atlas h2{font-size:24px;letter-spacing:-.02em;margin:0 0 8px}.atlas .hint{color:var(--ink-faint);font-size:14px;margin:0 0 22px}.tier-block{border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:var(--card);overflow:hidden}.tier-block summary{cursor:pointer;padding:14px 18px;font-weight:600;display:flex;align-items:center;gap:10px;list-style:none;font-size:15px}.tier-block summary::-webkit-details-marker{display:none}.tier-block summary:before{content:"▸";color:var(--ink-faint);transition:transform .15s;display:inline-block}.tier-block[open] summary:before{transform:rotate(90deg)}.tier-block .count{margin-left:auto;font-size:13px;color:var(--ink-faint);font-weight:400}.word-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));grid-gap:1px;gap:1px;background:var(--line);border-top:1px solid 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.wrap{height:54px;gap:14px}.site-nav{gap:15px;font-size:13px;min-width:0}.nav-lg-only{display:none}.nav-sm-only{display:inline}.cat-intro{display:flex;flex-direction:column}.cat-intro .crumbs{order:-3}.cat-intro h1{order:-2}.cat-intro .cat-game{order:-1}.cat-intro .cat-def{order:1}.cat-intro .cat-anchor{order:2}.cat-intro .cat-game .game{margin:0 0 20px}.cat-intro h1{margin-bottom:16px}.word-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.tier-block summary{padding:13px 14px}}@media (max-width:340px){.site-header .wrap{gap:10px}.site-nav{gap:10px;font-size:12px}.brand{font-size:15px}}