*{box-sizing:border-box;margin:0;padding:0}:root{--bg: #04090d;--panel: #0a141b;--line: #123242;--accent: #35d0ba;--accent-dim: #128a7a;--text: #c8dce2;--muted: #6e8a94;--warn: #ffb547;--hit: #ff5a4d}html,body{height:100%}body{background:radial-gradient(1200px 600px at 50% -10%,rgba(53,208,186,.08),transparent),var(--bg);color:var(--text);font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif;font-size:16px}#app{min-height:100%;display:flex;flex-direction:column}#topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--line);background:#0a141bd9}#topbar-right{display:flex;align-items:center;gap:10px;margin-left:auto;min-width:0;max-width:100%}#btn-mute{flex:0 0 44px;width:44px;height:44px;min-height:44px;padding:0;border-radius:50%;font-size:20px;line-height:1;display:inline-flex;align-items:center;justify-content:center;background:#0e1d26}#room-info{display:flex;align-items:center;gap:8px;font-size:16px}#room-code{color:var(--accent);letter-spacing:2px;font-size:18px}button{min-height:46px;padding:10px 18px;border:1px solid var(--line);border-radius:8px;background:#0e1d26;color:var(--text);font-size:16px;cursor:pointer;transition:background .15s,border-color .15s}button:hover{border-color:var(--accent-dim)}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--accent-dim);border-color:var(--accent);color:#02100d;font-weight:700}main{flex:1;display:flex;align-items:stretch;justify-content:center}.panel{position:relative;margin:auto;width:min(420px,92vw);background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:28px 24px;display:flex;flex-direction:column;gap:14px}#menu.menu-stack{display:flex;flex-direction:column;gap:20px;margin:auto;width:min(420px,92vw)}#menu .panel{width:100%;margin:0}.lobby-hero{display:flex;flex-direction:column;align-items:center;text-align:center}.logo-art{height:104px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}.logo-mark{width:104px;height:104px;color:var(--accent)}#menu .lobby-hero h1{font-size:32px;line-height:1.15}.tagline{margin-top:8px;font-size:16px;line-height:1.5;color:var(--muted)}@media(max-width:719px){.logo-art{height:80px}.logo-mark{width:80px;height:80px}#menu .lobby-hero h1{font-size:28px}}.logo-mark .logo-hit{fill:var(--hit)}.logo-mark .logo-hit-ring{stroke:var(--hit)}.lobby-tools{display:flex;align-items:center;justify-content:flex-end;gap:8px;min-width:0;flex:0 1 auto}.lang-switch{display:flex;gap:6px;flex:0 0 auto}.lang-switch a{min-width:44px;height:44px;padding:0 10px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);color:var(--muted);text-decoration:none;font-size:16px;transition:color .15s,border-color .15s}.lang-switch a:hover{color:var(--accent);border-color:var(--accent-dim)}#nav-home{flex:0 0 44px;width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--line);background:#ffffff0a;color:var(--muted);text-decoration:none;transition:color .15s,border-color .15s,background .15s}#nav-home:hover{color:var(--accent);border-color:var(--accent-dim);background:#35d0ba1a}#nav-home svg{width:20px;height:20px}.lobby-meta{display:flex;align-items:center;justify-content:flex-start;gap:12px;margin-top:4px}.dg-version{flex:0 1 auto;min-width:0;align-self:center;text-align:right;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:12px;line-height:18px;color:var(--muted);opacity:.72;pointer-events:none;user-select:text}.panel h1{font-size:26px;letter-spacing:2px}.panel .desc{color:var(--muted);font-size:16px}.field{display:flex;flex-direction:column;gap:6px;font-size:16px;color:var(--muted)}input{min-height:46px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:#071018;color:var(--text);font-size:16px}.join-row{display:flex;gap:8px}.join-row input{flex:1;min-width:0;text-transform:uppercase;letter-spacing:2px}.join-row button{min-width:88px}.mode-grid{display:grid;grid-template-columns:1fr;gap:10px;width:100%}.mode-card{display:flex;align-items:center;justify-content:center;width:100%;min-height:72px;padding:14px 16px;text-align:center}.mode-card .mode-name{font-size:18px;font-weight:700}@media(min-width:720px){.mode-grid{grid-template-columns:repeat(2,1fr)}.panel,#menu.menu-stack{width:min(720px,92vw)}}.presence{display:flex;align-items:center;gap:8px;font-size:16px;color:var(--muted)}.presence i{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulseDot 2s infinite}@keyframes pulseDot{0%{box-shadow:0 0 #35d0ba80}70%{box-shadow:0 0 0 10px #35d0ba00}to{box-shadow:0 0 #35d0ba00}}#lobby-rules.lobby-rules-quiet{max-width:720px;margin:0 auto;padding:0;text-align:center;color:var(--muted);opacity:.75}#lobby-rules h2{margin:0 0 6px;font-size:14px;font-weight:600;letter-spacing:.5px;line-height:1.5;color:var(--muted)}.rules-quiet-text{margin:0 0 6px;font-size:14px;line-height:1.6;color:var(--muted)}.rules-quiet-more{margin:0;font-size:14px;line-height:1.6}.rules-quiet-more a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}.rules-quiet-more a:hover,.rules-quiet-more a:focus-visible{color:var(--accent)}#game{width:100%;max-width:1100px;margin:0 auto;padding:12px 14px 28px;display:flex;flex-direction:column;gap:10px}#status-bar{text-align:center;min-height:30px;font-size:17px;color:var(--accent)}#seat-line{display:flex;justify-content:center;align-items:center;gap:14px;font-size:16px}#seat-line .vs{color:var(--warn);letter-spacing:2px}#seat-opp .lv{color:var(--warn);font-size:16px;margin-left:4px}#seat-opp .takeover{color:var(--warn);font-weight:600}#rtt{font-size:16px;color:var(--accent);font-variant-numeric:tabular-nums}#rtt.mid{color:var(--warn)}#rtt.bad{color:var(--hit)}#chat-stack{position:fixed;left:10px;top:118px;z-index:45;display:flex;flex-direction:column;align-items:flex-start;gap:6px;max-width:72vw;pointer-events:none}.bubble{max-width:min(420px,82vw);background:#0e1d26eb;border:1px solid var(--accent-dim);border-radius:12px 12px 12px 2px;padding:8px 12px;font-size:16px;color:var(--text);animation:bubbleIn .18s ease-out,bubbleOut .4s ease-in 5.6s forwards}.bubble.mine{align-self:flex-end;border-radius:12px 12px 2px;background:#127a6d59}.chat-toggle{position:fixed;right:12px;bottom:12px;z-index:60;width:52px;height:52px;min-height:52px;padding:0;border-radius:50%;font-size:22px;line-height:1;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 6px 20px #00000073}#chat-bar{position:fixed;left:10px;right:10px;bottom:10px;z-index:61;display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:8px 10px;background:#0a141bf7;border:1px solid var(--accent-dim);border-radius:14px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}#chat-emojis{display:flex;gap:4px}#chat-emojis button{width:44px;height:44px;min-height:44px;padding:0;font-size:20px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center}#chat-input{flex:1;min-width:120px}#chat-send{min-width:72px}.bubble .who{color:var(--accent);font-weight:600;margin-right:6px}@keyframes bubbleIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes bubbleOut{to{opacity:0;transform:translateY(-4px)}}#seat-me em,#seat-opp em{font-style:normal;color:var(--accent)}#boards{display:flex;gap:18px;justify-content:center;flex-wrap:wrap}.board-pane{display:flex;flex-direction:column;gap:6px;align-items:center}.board-pane h2{font-size:16px;color:var(--muted);letter-spacing:1px;font-weight:600}.board-pane canvas{width:min(46vh,100%);max-width:480px;border:1px solid var(--line);border-radius:10px;touch-action:manipulation}#place-tools{display:flex;flex-direction:column;gap:10px;align-items:center}.guide{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;width:100%;padding:8px 12px;border:1px solid var(--accent-dim);border-radius:10px;background:#35d0ba1a;font-size:16px;line-height:1.4}#ship-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.ship-chip{display:flex;align-items:center;gap:8px;min-height:44px;padding:8px 14px;border:1px solid var(--line);border-radius:8px;cursor:pointer;user-select:none;font-size:16px}.ship-chip.selected{border-color:var(--accent);background:#35d0ba1f}.ship-chip .dots{display:flex;gap:3px}.ship-chip .dots i{width:12px;height:12px;border-radius:3px;background:#2b4a58;display:inline-block}.ship-chip.placed .dots i{background:var(--accent)}#place-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}#battle-actions{display:flex;justify-content:center}#fleet-meter{display:flex;align-items:center;justify-content:center;gap:10px;font-size:16px;color:var(--muted)}#fleet-meter .meter-label{letter-spacing:1px}#meter-dots{display:inline-flex;gap:6px}#meter-dots i{width:18px;height:18px;border-radius:4px;background:#14323f;border:1px solid var(--line);display:inline-block;transition:background .25s,border-color .25s}#meter-dots i.down{background:var(--hit);border-color:#ff8a7f}#meter-text{color:var(--accent);font-size:18px;font-weight:700;font-variant-numeric:tabular-nums}#result-overlay{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center;background:#02080cc7;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fadeIn .22s ease-out}.result-card{width:min(420px,88vw);background:var(--panel);border:1px solid var(--accent-dim);border-radius:16px;padding:28px 24px;text-align:center;display:flex;flex-direction:column;gap:14px;box-shadow:0 18px 60px #0000008c}.result-card h2{font-size:28px;letter-spacing:2px}.result-card p{font-size:16px;color:var(--muted);line-height:1.5}.result-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.result-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:12px 8px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.result-stats>div{display:flex;flex-direction:column;gap:2px}.result-stats b{font-size:22px;color:var(--accent);font-variant-numeric:tabular-nums}.result-stats span{font-size:16px;color:var(--muted)}.result-actions button{flex:1;min-width:140px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.hidden{display:none!important}#toast{position:fixed;left:50%;top:76px;bottom:auto;transform:translate(-50%);background:#0e1d26;border:1px solid var(--accent-dim);color:var(--text);padding:12px 20px;border-radius:10px;font-size:16px;max-width:88vw;z-index:50}#sw-update{position:fixed;left:50%;bottom:max(74px,calc(env(safe-area-inset-bottom) + 64px));transform:translate(-50%);z-index:62;display:flex;align-items:center;gap:12px;max-width:92vw;padding:8px 8px 8px 16px;background:#0e1d26;border:1px solid var(--accent-dim);border-radius:10px;box-shadow:0 8px 24px #00000073;font-size:16px;color:var(--text)}#sw-update button{flex:0 0 auto;min-width:72px;min-height:44px}#sw-update span{white-space:nowrap}@media(max-width:860px){#boards{flex-direction:column;align-items:center}.board-pane canvas{width:min(88vw,480px)}button{min-height:44px}}@media(orientation:landscape)and (max-height:520px){#topbar{padding:4px 12px}#game{padding:4px 10px 8px;gap:6px}#status-bar{min-height:24px;font-size:16px}#seat-line{gap:10px}#fleet-meter{gap:8px}#boards{flex-direction:row;align-items:flex-start;gap:14px}.board-pane{gap:2px}.board-pane h2{font-size:16px;line-height:1.2}.board-pane canvas{width:min(62vh,43vw)}#place-tools{gap:6px}.ship-chip{padding:4px 10px;min-height:44px}}.dg-footer{margin-top:80px;padding:40px 20px 20px;border-top:1px solid rgba(255,255,255,.05);background:transparent;color:#fff6;font-family:system-ui,-apple-system,sans-serif}.dg-seo-silo{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;max-width:1000px;margin:0 auto 40px}.seo-col h3{font-size:.9rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:#fff9;margin-bottom:16px}.seo-col ul{list-style:none;padding:0;margin:0}.seo-col li{margin-bottom:10px}.seo-col a{color:inherit;text-decoration:none;font-size:.85rem;transition:color .2s ease}.seo-col a:hover{color:#ffffffe6;text-decoration:underline}.dg-footer-copyright{text-align:center;font-size:.75rem;border-top:1px solid rgba(255,255,255,.05);padding-top:20px}