:root{--bg: #f3ede3;--paper: #fffbf4;--ink: #1a1612;--muted: #6a6156;--line: #e0d5c5;--d: #c44536;--s: #2f7d4a;--shadow: 0 18px 50px rgba(40, 28, 16, .08);--radius: 18px}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;color:var(--ink);background:radial-gradient(1200px 500px at 10% -10%,rgba(196,69,54,.08),transparent 50%),radial-gradient(900px 420px at 110% 0%,rgba(44,95,158,.08),transparent 45%),var(--bg);font-family:Noto Sans SC,PingFang SC,Hiragino Sans GB,sans-serif;line-height:1.55}button,a{font-family:inherit}h1,h2,h3,.serif{font-family:"Noto Serif SC",Songti SC,serif;font-weight:700}.shell{width:min(920px,calc(100% - 24px));margin:0 auto;padding:24px 0 72px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none}.brand-logo{width:42px;height:42px;object-fit:contain;border-radius:50%}.brand-name{font-size:15px;font-weight:700}.brand-sub{font-size:12px;color:var(--muted)}.kicker{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}.hero h1,.intro-card h1{font-size:clamp(28px,6vw,48px);line-height:1.15;margin:0 0 12px}.lede{max-width:38em;color:var(--muted);margin:0 0 8px}.hint{color:var(--muted);font-size:14px}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.intro-card{padding:28px 24px 32px}.grid.tests{display:grid;grid-template-columns:1fr 1fr;gap:16px}.test-card{display:grid;grid-template-columns:92px 1fr;overflow:hidden;text-decoration:none;color:inherit}.test-card:hover{transform:translateY(-2px);transition:transform .15s ease}.swatch{display:flex;flex-direction:column;justify-content:space-between;padding:14px;color:#fff}.swatch b{font-size:18px;font-family:"Noto Serif SC",serif}.swatch small{font-size:11px}.test-body{padding:18px 20px 16px}.test-body h2{margin:0 0 6px;font-size:22px}.test-body p{margin:0 0 12px;color:var(--muted);font-size:14px}.meta{display:flex;gap:8px}.pill{border:1px solid var(--line);border-radius:999px;padding:2px 10px;font-size:12px;color:var(--muted)}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:var(--ink);color:#fff;border-radius:999px;padding:12px 20px;font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.btn.light{background:transparent;color:var(--ink);border:1px solid var(--line)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.code{font-size:56px;line-height:1;margin:4px 0 8px}.quad-legend{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}.quad-legend>div{border:1px solid var(--line);border-radius:14px;padding:12px;display:grid;gap:2px}.quad-legend small{color:var(--muted);font-size:12px}.play-shell{position:relative}.play-hud{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:10px}.play-tip{margin:0 0 10px;font-size:13px;color:var(--muted)}.ghost{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:999px;padding:4px 12px;font-size:13px;cursor:pointer}.rules{margin:18px 0 0}.rules h3{margin:0 0 8px;font-size:16px}.rules ol{margin:0;padding-left:1.2em;color:var(--ink)}.rules li{margin:0 0 8px}.rules-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#1a161273;z-index:20;display:grid;place-items:center;padding:16px}.rules-modal{width:min(520px,100%);max-height:min(86vh,720px);overflow:auto}.rules-modal .btn{margin-top:16px}.quad-board{display:grid;grid-template-columns:1fr 1fr;gap:10px;min-height:min(58vh,520px)}.quad-zone{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:2px dashed var(--line);background:#fffbf4b3;border-radius:18px;cursor:pointer;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:8px;padding:12px;text-align:left;color:var(--ink);min-height:0;overflow:auto}.quad-head{display:flex;flex-direction:column;gap:2px}.quad-zone b{color:var(--q);font-size:16px}.quad-zone small{color:var(--muted);font-size:12px}.kept-list{display:flex;flex-wrap:wrap;gap:6px;align-content:flex-start}.kept-chip{border-radius:999px;padding:3px 8px;font-size:12px;line-height:1.3;background:#fff;border:1px solid var(--line)}.kept-chip.yes{border-color:var(--s);color:var(--s)}.kept-chip.no{border-color:var(--d);color:var(--d)}.result-board{min-height:280px;margin:18px 0 8px}.quad-zone.on{border-style:solid;border-color:var(--q);background:#fff}.quad-zone.ok{background:#e7f4ea;border-color:var(--s)}.quad-zone.bad{background:#fbe9e6;border-color:var(--d)}.task-card{position:absolute;left:50%;top:46%;width:min(280px,70%);transform:translate(-50%,-50%);background:var(--paper);border:1px solid var(--ink);border-radius:16px;padding:16px;box-shadow:var(--shadow);touch-action:none;cursor:grab;-webkit-user-select:none;user-select:none;z-index:3}.task-card.dragging{position:fixed;z-index:8;cursor:grabbing}.task-card h2{margin:0 0 6px;font-size:22px}.task-card p{margin:0;color:var(--muted);font-size:14px}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%);max-width:min(520px,calc(100% - 24px));background:var(--ink);color:#fff;border-radius:14px;padding:12px 16px;font-size:14px;z-index:9}.toast.nope{background:var(--d)}.toast.good{background:var(--s)}.pomo-shell{min-height:70vh}.pomo-stage{position:relative;height:min(64vh,560px);border:1px solid var(--line);border-radius:18px;background:#fffbf4;overflow:hidden}.tomato{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:88px;height:88px;border-radius:50%;background:#fff;border:2px solid var(--d);display:grid;place-items:center;text-align:center;z-index:1}.tomato span{font-size:36px;line-height:1}.tomato small{position:absolute;bottom:-22px;width:120px;left:50%;transform:translate(-50%);font-size:12px;color:var(--muted)}.tomato.hurt{animation:pulse .6s ease infinite}@keyframes pulse{50%{transform:translate(-50%,-50%) scale(.94)}}.fly{position:absolute;transform:translate(-50%,-50%);-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--ink);background:#fff;border-radius:999px;padding:8px 12px;font-size:13px;cursor:pointer;z-index:2;white-space:nowrap}.pomo-tip{text-align:center;margin-top:10px}@media(max-width:640px){.grid.tests{grid-template-columns:1fr}.quad-board{min-height:52vh}.task-card{width:min(240px,78%)}}