/* Keep training selection readable even before a theme has been applied. */
.training-main button.choice[aria-pressed=true] {
  --training-selected-bg:#435340;
  --training-selected-text:#fff;
  background:var(--training-selected-bg);
  color:var(--training-selected-text);
  font-weight:700;
}
.training-main button.choice[aria-pressed=true]:disabled { opacity:1; }
.training-main .lesson-link.done::after { color:inherit; }
/* Hover and pointer-down happen before a click selects the next lesson. Keep
   that surface and its ink paired, including native disabled text painting. */
.training-main .curriculum { --lesson-selected-bg:#2d4b40; --lesson-selected-ink:#fff; }
html[data-game-theme="navy"] .training-main .curriculum { --lesson-selected-bg:#243f5c; }
body.game-ui .training-main .curriculum .lesson-link {
  --lesson-bg:transparent;
  --lesson-ink:var(--ink);
  background:var(--lesson-bg);
  color:var(--lesson-ink);
  -webkit-text-fill-color:currentColor;
  opacity:1;
  gap:6px;
  transition:none;
}
body.game-ui .training-main .curriculum .lesson-link:is(:hover,:focus-visible,:active),
body.game-ui .training-main .curriculum .lesson-link.active {
  --lesson-bg:var(--lesson-selected-bg);
  --lesson-ink:var(--lesson-selected-ink);
}
body.game-ui .training-main .curriculum .lesson-link.active { font-weight:700; }
body.game-ui .training-main .curriculum .lesson-link.active::before {
  content:'›';
  flex:none;
  font-size:18px;
  line-height:1;
}
:root{color-scheme:dark;--bg:#111a18;--panel:#1d2a25;--ink:#ebe2ce;--muted:#b4b6a5;--gold:#c8ad73;--line:#526052;--paper:#daceb3;--red:#efac95}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:radial-gradient(ellipse at 65% 0,#304039 0,transparent 60%),var(--bg);font:15px/1.65 'Microsoft YaHei',sans-serif}a{color:inherit}button,input,select,textarea{font:inherit}button,.button{cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:10px;color:var(--ink);padding:10px 18px;border:1px solid #7b775b;background:#29372e;text-decoration:none}button:hover,.button:hover{background:#37473b}button:disabled{opacity:.5;cursor:not-allowed}.primary{background:var(--gold);color:#172019;border-color:var(--gold)}.primary:hover{background:#dfc48c}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid #e6c78a;outline-offset:3px}header{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px clamp(16px,4vw,64px);border-bottom:1px solid var(--line)}.brand{font:25px/1.4 SimSun,serif;letter-spacing:.16em;text-decoration:none;color:#e4cf9e}nav{display:flex;gap:18px;flex-wrap:wrap}nav a{text-decoration:none;color:var(--muted)}main{max-width:1250px;margin:auto;padding:40px 24px}.eyebrow{font:12px/1.5 Consolas,sans-serif;letter-spacing:.14em;color:var(--gold)}h1,h2,h3{font-family:SimSun,serif;line-height:1.3}h1{font-size:clamp(30px,4vw,52px);font-weight:500;margin:10px 0 18px}h2{font-size:26px;margin:12px 0}h3{font-size:20px}p{margin:0 0 14px}.intro{max-width:650px;color:var(--muted)}.desk-hero{position:relative;padding:30px 0 38px;max-width:830px}.modes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.mode{padding:25px;background:linear-gradient(130deg,#26372c,#19251f);border:1px solid var(--line);min-width:0;display:flex;flex-direction:column;position:relative}.mode:before{content:'';width:64px;height:3px;background:var(--gold);position:absolute;top:0;left:25px}.mode p{color:var(--muted);flex:1}.mode-icon{width:58px;height:58px;stroke:var(--gold);fill:none;stroke-width:1.2;margin:10px 0}.mode .button{margin-top:14px}.details{display:flex;flex-wrap:wrap;gap:24px;margin-top:26px;color:var(--muted);font-size:13px}.route{margin-top:35px;border-top:1px solid var(--line);padding-top:22px}.route p{color:var(--muted)}footer{font-size:12px;color:var(--muted);padding:20px 0}.training-main{max-width:1500px;padding-top:22px}.training-head{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:18px}.training-head h1{font-size:32px;margin:0}.training-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:24px}.curriculum{border:1px solid var(--line);padding:12px;max-height:calc(100vh - 140px);overflow:auto;position:sticky;top:15px;align-self:start}.phase{color:var(--gold);font-size:12px;padding:12px 8px 4px}.lesson-link{width:100%;justify-content:flex-start;text-align:left;padding:7px 8px;font-size:13px;border:0;background:transparent}.lesson-link.active{background:#42533e;color:#f3dfac}.lesson-link.done:after{content:'已完成';font-size:10px;color:#bfd4ac;margin-left:auto;white-space:nowrap}.lesson-panel{min-width:0}.scene{background:linear-gradient(120deg,#d9cdb4,#c5b393);color:#302c24;padding:24px;border:1px solid #998761;position:relative}.scene .eyebrow{color:#675330}.scene h2{margin:10px 0}.scene p{max-width:850px}.scene svg{width:60px;height:60px;float:right;fill:none;stroke:#73613f;stroke-width:1.4;margin-left:15px}.concepts{padding:20px 0 10px}.concepts p{border-left:2px solid #8b865c;padding-left:16px;color:#d2d3c1}.practice{background:#19251f;border:1px solid var(--line);padding:22px;min-width:0}.practice h3{margin:0 0 10px}.choices{display:grid;gap:10px;margin:18px 0}.choice{text-align:left;justify-content:flex-start}.choice[aria-pressed=true]{border-color:#e7c78a;background:#435340}.sql-editor{width:100%;display:block;min-height:160px;resize:vertical;color:#eedcb5;background:#111d18;border:1px solid var(--line);padding:14px;font:15px/1.7 Consolas,monospace;margin:10px 0;max-width:100%}.toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:12px 0}.feedback{padding:12px 15px;border-left:2px solid #ad9763;background:#263329;min-height:50px;margin:14px 0}.feedback.error{color:var(--red);border-color:#c5866d}.feedback.success{color:#d5e6bc;border-color:#99b577}.results{max-height:270px;overflow:auto;margin:12px 0}table{border-collapse:collapse;width:100%;font:13px Consolas,sans-serif}td,th{border-bottom:1px solid var(--line);padding:9px;text-align:left;white-space:nowrap}th{color:var(--gold)}details{margin:18px 0}summary{cursor:pointer;color:var(--gold)}pre{white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.7 Consolas,monospace;background:#111d18;padding:15px;color:#d8cba9}code{font-family:Consolas,monospace}.runtime-note{font-size:12px;color:var(--muted)}.progress{color:var(--gold);white-space:nowrap}.duel-main{max-width:850px}.invite-box{padding:28px;background:var(--panel);border:1px solid var(--line);margin-top:20px}.form-row{display:flex;gap:18px;flex-wrap:wrap;margin:16px 0}.form-row label{display:flex;flex-direction:column;gap:6px;flex:1;min-width:200px}input,select{padding:9px;color:var(--ink);background:#111d18;border:1px solid var(--line);max-width:100%;width:100%}.invite-url{width:100%;margin:12px 0}.players{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0}.player{padding:20px;border:1px solid var(--line);background:#25332b}.player strong{display:block;color:var(--gold)}.duel-meter{margin:0 auto 18px;padding:12px 18px;max-width:1600px;background:#15221c;border:1px solid #80734e;display:flex;gap:20px;justify-content:space-between;align-items:center;font-size:13px;flex-wrap:wrap}.duel-meter .button{padding:5px 10px}.duel-status{color:#ecd49d}small{color:var(--muted)}[hidden]{display:none!important}@media(max-width:900px){.modes{grid-template-columns:1fr}.mode{min-height:240px}.training-layout{grid-template-columns:1fr}.curriculum{position:static;max-height:230px}.training-main{padding:20px 16px}.training-head{align-items:flex-start;flex-direction:column}header{padding:15px 16px}.brand{font-size:21px}nav{gap:12px;font-size:13px}}@media(max-width:480px){main{padding:24px 14px}.players{grid-template-columns:1fr}.invite-box,.practice,.scene{padding:18px}header{align-items:flex-start;flex-direction:column}.scene svg{width:42px;height:42px}.duel-meter{gap:8px}.training-head h1{font-size:27px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}