:root{--bg: #14100c;--panel: #1f1812;--grid: #2a2017;--empty: #2f2419;--line: #3a2c1e;--ink: #f4e8d8;--muted: #b69a7c;--accent: #ff6a1a;--hot: #ff2a06;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;background:radial-gradient(1200px 600px at 50% -10%,#2a1d12,var(--bg));color:var(--ink);font-family:Segoe UI,system-ui,sans-serif;-webkit-font-smoothing:antialiased}#app{min-height:100vh}.wrap{max-width:460px;margin:0 auto;padding:18px 16px 40px}header h1{margin:0;font-size:2.1rem;letter-spacing:1px;background:linear-gradient(180deg,#ffd9a0,var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}.tag{margin:4px 0 0;color:var(--muted);font-size:.82rem;line-height:1.35}.bar{display:flex;align-items:center;gap:8px;margin:14px 0 12px}.spacer{flex:1}.seg{display:inline-flex;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}.seg button{background:transparent;color:var(--muted);border:0;padding:7px 12px;font-size:.82rem;cursor:pointer}.seg button.active{background:linear-gradient(180deg,var(--accent),#d6480f);color:#1a1109;font-weight:700}.score{display:flex;flex-direction:column;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:4px 12px;min-width:58px}.score .k{font-size:.6rem;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}.score b{font-size:1.15rem}button.primary{background:linear-gradient(180deg,var(--accent),#d6480f);color:#1a1109;border:0;border-radius:10px;padding:9px 16px;font-weight:700;font-size:.9rem;cursor:pointer}button.primary:active{transform:translateY(1px)}.boardwrap{position:relative}.board{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:10px;background:var(--grid);border:1px solid var(--line);border-radius:14px;padding:10px;aspect-ratio:1 / 1;touch-action:none}.cell{position:relative;display:flex;align-items:center;justify-content:center;border-radius:9px;background:var(--empty);font-weight:800;color:#20140b}.cell.tile{color:#fff4e6;text-shadow:0 1px 2px rgba(0,0,0,.35)}.cell.slag{background:repeating-linear-gradient(45deg,#1b1611,#1b1611 6px,#241c14 6px 12px);color:#5a4a38;font-size:1.3rem;box-shadow:inset 0 0 0 1px #3a2c1e}.cell.h1{box-shadow:inset 0 0 14px #ff8c288c}.cell.h2{box-shadow:inset 0 0 0 2px #ffae5e,0 0 16px #ff3c0ab3;animation:pulse .9s ease-in-out infinite}@keyframes pulse{0%,to{box-shadow:inset 0 0 0 2px #ffae5e,0 0 10px #ff3c0a8c}50%{box-shadow:inset 0 0 0 2px #fff0d0,0 0 22px #ff3c0af2}}.fuse{position:absolute;top:4px;right:5px;min-width:16px;height:16px;padding:0 3px;border-radius:8px;background:#2a0c04;color:#ffcaa0;font-size:.7rem;line-height:16px;text-align:center;border:1px solid #ff5a22}.meta{display:flex;gap:8px;margin:12px 0 0;flex-wrap:wrap}.chip{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:5px 10px;font-size:.78rem;color:var(--muted)}.chip b{color:var(--ink)}.hint{margin:14px 0 0;color:var(--muted);font-size:.76rem;line-height:1.4}.hint .ig,.ig{color:var(--hot);font-weight:700}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#0c0805c7;border-radius:14px;backdrop-filter:blur(2px)}.overlay.hidden{display:none}.overlay .card{text-align:center;padding:22px 26px}.overlay h2{margin:0 0 8px;font-size:1.7rem}.overlay p{margin:0 0 16px;color:var(--muted);line-height:1.5}.overlay b{color:var(--ink)}