/* 与棋钟一样自给自足:不引外部字体、不引图片。 */
:root{color-scheme:dark;--bg:#202426;--panel:#2a2f31;--ink:#f7f3e8;--muted:#a8aeac;--line:#3b4142;--accent:#e8bd79;--red:#c1453a;--black:#1f2a30;--paper:#f0dcb4;--paper-line:#6b4a24}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg)}
body{color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.55;-webkit-tap-highlight-color:transparent}
a{color:var(--accent)}code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;word-break:break-all}
.app{max-width:1040px;margin:0 auto;padding:0 14px 32px;padding-top:env(safe-area-inset-top)}
.app-header{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;color:var(--ink);text-decoration:none;font-weight:700;font-size:18px}.brand-logo{border-radius:50%}
.mode-tabs{display:flex;gap:4px;padding:3px;border:1px solid var(--line);border-radius:999px;background:var(--panel)}
.mode-tab{appearance:none;border:0;border-radius:999px;padding:7px 16px;background:transparent;color:var(--muted);font:inherit;font-weight:600;cursor:pointer}
.mode-tab[aria-pressed="true"]{background:var(--accent);color:#2b210f}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px;margin-top:14px}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}.field input,.field select{width:100%;min-width:0}.mode-block{min-width:0}.field-label{font-size:13px;color:var(--muted)}
select,input[type="text"]{font:inherit;color:var(--ink);background:#1b1f21;border:1px solid var(--line);border-radius:10px;padding:10px 12px;min-height:44px}
select:focus,input:focus{outline:2px solid var(--accent);outline-offset:1px}
.hint{color:var(--muted);margin:12px 0 10px}
.seed-grid{display:grid;gap:10px;grid-template-columns:1fr}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
button.primary,button.secondary{font:inherit;font-weight:600;border-radius:12px;padding:11px 18px;min-height:44px;cursor:pointer;border:1px solid transparent}
button.primary{background:var(--accent);color:#2b210f}button.primary:active{transform:translateY(1px)}
button.secondary{background:transparent;color:var(--ink);border-color:var(--line)}button.secondary:hover{border-color:var(--accent)}
.result{display:grid;gap:18px;grid-template-columns:1fr}
.board-wrap{display:flex;justify-content:center}
.board{width:100%;max-width:440px;height:auto;display:block;border-radius:10px;background:var(--paper);box-shadow:0 10px 30px rgba(0,0,0,.35)}
.result-title{margin:0 0 8px;font-weight:700;font-size:17px}
.meta{margin:0;display:grid;gap:8px}.meta div{display:grid;grid-template-columns:72px 1fr;gap:8px;align-items:baseline}.meta dt{color:var(--muted);font-size:13px}.meta dd{margin:0}
.verify-note{color:var(--muted);font-size:13px;margin:14px 0 0}
.notice{margin:14px 0 0;padding:10px 14px;border-radius:12px;background:#3a3f41;color:var(--ink)}.notice.error{background:#5a2d2a}
.app-footer{margin-top:22px;color:var(--muted);font-size:13px}.app-footer p{margin:6px 0}
[hidden]{display:none!important}
@media(min-width:720px){.result{grid-template-columns:minmax(0,440px) 1fr;align-items:start}.seed-grid{grid-template-columns:1fr 1fr 1fr}.controls .hint{margin-top:0}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.header-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.language-picker{position:relative;display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:0 10px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:var(--panel)}
.language-picker:focus-within{outline:2px solid var(--accent);outline-offset:1px}
.language-picker select{position:absolute;top:0;right:0;bottom:0;left:0;inset:0;width:100%;height:100%;min-height:0;opacity:0;cursor:pointer;border:0;padding:0;margin:0;font-size:16px}
.language-picker-icon{flex:0 0 auto}.wiki-vietnamese-letter{font-size:13px;font-weight:700;line-height:1}
.lead{margin:14px 0 0;padding:0 2px;font-size:16px;font-weight:600}
.hint br{display:block}