:root{--bg: #06283d;--felt: #0a3a55;--line: #1b6e8c;--ink: #eef6fb;--dim: #a9d2e0;--accent: #46d5e0;--slot: rgba(0,0,0,.24);--red: #e0464a;--black: #1c2230;--water: rgba(40,150,220,.42)}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(1000px 620px at 50% -12%,#0a3a55,#04141f);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,sans-serif;display:flex;justify-content:center;-webkit-user-select:none;user-select:none}#app{width:100%;max-width:760px;padding:12px 10px 26px}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:26px;letter-spacing:3px;font-weight:800;color:var(--accent)}.sub{margin:2px 0 0;color:#bfe0ee;font-size:13px}.bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;margin:8px 0}.seg{display:inline-flex;background:#0003;border:1px solid var(--line);border-radius:999px;overflow:hidden}.seg button{background:none;border:none;color:#cfeaf6;padding:6px 13px;font:600 13px system-ui;cursor:pointer}.seg button.active{background:var(--accent);color:#053040}.btn{background:#00000038;border:1px solid var(--line);color:var(--ink);padding:7px 14px;border-radius:999px;font:700 13px system-ui;cursor:pointer}.btn:hover{border-color:var(--accent)}.btn.primary{background:var(--accent);color:#053040;border-color:var(--accent)}.status{text-align:center;min-height:20px;margin:4px 0;color:#cfeaf6;font-size:13px;font-weight:600}.tidebar{position:relative;height:12px;border-radius:999px;background:#00000047;border:1px solid var(--line);overflow:hidden;margin:6px auto 12px;max-width:420px}.tidefill{position:absolute;left:0;top:0;bottom:0;width:0%;background:linear-gradient(90deg,#1b6e8c,var(--accent));transition:width .18s ease}.tidelabel{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:#eaf7fc;letter-spacing:.4px;text-shadow:0 1px 2px rgba(0,0,0,.6)}.stage{position:relative}.top{display:flex;justify-content:space-between;gap:6px;margin-bottom:12px}.group{display:flex;gap:6px}.slot{width:var(--cw);height:var(--ch);border-radius:7px;background:var(--slot);border:1px dashed rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;color:#ffffff40;font-size:20px}.cols{display:grid;grid-template-columns:repeat(8,1fr);gap:6px}.col{position:relative;min-height:calc(var(--ch) + 12px);border-radius:7px}.col.empty-target{background:var(--slot)}.water{position:absolute;left:-2px;right:-2px;border-radius:6px;background:linear-gradient(180deg,rgba(70,213,224,.16),var(--water));border-top:2px solid rgba(120,225,255,.85);box-shadow:0 0 14px #28a0dc80 inset;pointer-events:none;z-index:1}.card{width:100%;height:var(--ch);border-radius:7px;background:#fbfdff;color:var(--black);position:absolute;left:0;box-shadow:0 1px 2px #0006;cursor:pointer;border:1px solid #c7ccd4;padding:3px 5px;font-weight:800;line-height:1;z-index:2}.slot .card{position:static}.card.red{color:var(--red)}.card .corner{font-size:clamp(12px,3.4vw,17px)}.card .pip{position:absolute;right:5px;bottom:3px;font-size:clamp(13px,3.8vw,19px)}.card.sel{outline:3px solid var(--accent);outline-offset:-1px;z-index:50}.card.drowned{background:#1d5b78;color:#bfe6f4;border-color:#2b7fa3;cursor:not-allowed;box-shadow:0 0 10px #1e78aa99 inset;opacity:.92;z-index:2}.card.drowned.red{color:#ffb9bb}:root{--cw: 56px;--ch: 78px}@media(max-width:560px){:root{--cw: 38px;--ch: 56px}}.overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:#020c14c7;backdrop-filter:blur(3px);z-index:100}.overlay.hidden{display:none}.card-modal{background:#0a3148;border:1px solid var(--line);border-radius:16px;padding:22px 26px;text-align:center;max-width:360px}.card-modal h2{margin:0 0 6px;font-size:24px;color:var(--accent)}.card-modal p{margin:6px 0;color:#cfeaf6;font-size:14px}.card-modal .row{display:flex;gap:8px;justify-content:center;margin-top:14px}.hint{text-align:center;color:#9fc8da;font-size:12px;margin-top:10px}