:root{--paper:#ebede7;--surface:#fbfbf8;--surface-2:#f4f5f0;--ink:#213029;--ink-soft:#4a574f;--ink-faint:#8a938b;--line:#d7dbd1;--line-strong:#c3c8bb;--seal:#b23a2e;--seal-soft:#f0dbd5;--brass:#98793c;--brass-soft:#efe7d3;--ok:#3c6e52;--ok-soft:#dcebe0;--focus:#2f7d63;--shadow:0 1px 2px #2130290d, 0 8px 24px #2130290f;--radius:10px;--mono:"SFMono-Regular", ui-monospace, "DejaVu Sans Mono", Menlo, Consolas, monospace;--serif:"Songti SC", "Source Han Serif SC", "Noto Serif CJK SC", STSong, SimSun, serif;--sans:"PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif}*,:after,:before{box-sizing:border-box}body,html{min-height:100%;margin:0}body{font-family:var(--sans);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;font-size:14px;line-height:1.6;overflow-x:hidden}button,input,select,textarea{font:inherit}button{cursor:pointer;touch-action:manipulation}canvas,img,video{max-width:100%}a{touch-action:manipulation}::selection{background:var(--seal-soft)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.tag{font-family:var(--mono);letter-spacing:.4px;background:var(--surface-2);color:var(--ink-soft);border:1px solid var(--line);border-radius:5px;align-items:center;padding:2px 8px;font-size:10.5px;display:inline-flex}.tag.lvl{background:var(--brass-soft);color:#6f5a26;border-color:#e2d3a9}.tag.topic{color:#3d5a49;background:#e6ede8;border-color:#cadbcf}.muted{color:var(--ink-faint)}.mono{font-family:var(--mono)}.btn{border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);border-radius:9px;padding:10px 18px;font-size:13.5px;font-weight:600;transition:all .15s}.btn:hover{border-color:var(--ink-soft)}.btn.primary{background:var(--ink);color:#f3f5f1;border-color:var(--ink)}.btn.primary:hover{background:#2c4237}@media (width<=760px){body{font-size:13.5px}.page{max-width:100%!important;padding:24px 20px 64px!important}.btn{min-height:42px}input,select,textarea{font-size:16px!important}}@media (width<=430px){.page{padding:20px 14px 56px!important}}