:root{--ink:#173229;--muted:#6e7b74;--paper:#f4f0e4;--cream:#fbf8ef;--sage:#d9e2d5;--gold:#d1a862;--voice:#387456;--line:rgba(31,54,42,.13);--asset-version:9}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper)}
body{background-image:radial-gradient(circle at 5% 5%,rgba(255,255,255,.9),transparent 30%),linear-gradient(135deg,rgba(33,62,47,.035) 25%,transparent 25%);background-size:auto,32px 32px}
button,input{font:inherit}.shell{width:min(1180px,100%);min-height:100vh;margin:auto;padding:0 34px;display:flex;flex-direction:column}.topbar{height:94px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}
.brand{display:flex;gap:12px;align-items:center;color:inherit;text-decoration:none}.brand strong,.brand small{display:block}.brand strong{font-family:serif;font-size:20px;letter-spacing:.12em}.brand small{font-size:10px;letter-spacing:.22em;color:var(--muted);margin-top:3px}.brand-mark{width:38px;height:38px;position:relative;border:1px solid rgba(23,50,41,.25);transform:rotate(45deg)}.brand-mark i{position:absolute;width:10px;height:10px;border-radius:50%}.brand-mark i:first-child{background:#16211d;left:7px;top:7px}.brand-mark i:last-child{background:#fff;border:1px solid #b7b9b1;right:7px;bottom:7px}
.connection{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}.connection span:first-child{width:7px;height:7px;border-radius:50%;background:#bb754e;box-shadow:0 0 0 5px rgba(187,117,78,.1)}.connection.online span:first-child{background:#438161;box-shadow:0 0 0 5px rgba(67,129,97,.1)}
main{flex:1}.lobby{min-height:calc(100vh - 145px);display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:9vw;padding:56px 5% 70px}.eyebrow{font-size:10px;letter-spacing:.24em;font-weight:700;color:#75827b;margin:0 0 18px}.hero-copy h1{font:500 clamp(45px,6vw,80px)/1.15 "Songti SC","STSong",serif;letter-spacing:.06em;margin:0}.hero-copy h1 em{font-style:normal;color:#a87835}.intro{max-width:470px;line-height:1.9;color:var(--muted);margin:28px 0 0;font-size:15px}
.lobby-card{background:rgba(251,248,239,.88);border:1px solid rgba(24,54,43,.1);border-radius:4px;padding:34px;box-shadow:0 24px 70px rgba(27,48,38,.1)}label{display:block;font-size:12px;font-weight:700;margin-bottom:9px}input{width:100%;height:50px;border:1px solid #cbd1c8;background:#fffdf8;border-radius:3px;padding:0 15px;outline:none;color:var(--ink)}input:focus{border-color:#698674;box-shadow:0 0 0 3px rgba(105,134,116,.11)}button{border:0;cursor:pointer}.primary{width:100%;height:52px;background:var(--ink);color:#fff;border-radius:3px;margin-top:14px;font-weight:700;letter-spacing:.1em}.primary span{float:right;margin-right:16px}.divider{height:54px;display:flex;align-items:center;color:#9aa19c;font-size:11px}.divider:before,.divider:after{content:"";height:1px;background:#dde0da;flex:1}.divider span{padding:0 13px}.join-row{display:flex;gap:8px}.join-row input{text-transform:uppercase;letter-spacing:.22em}.join-row button{width:74px;background:#dfe7dc;color:var(--ink);font-weight:700;border-radius:3px}
.server-hint{margin:13px 0 0;color:#8b948e;font-size:10px;line-height:1.55}.server-hint span{font-weight:700;color:#657269;overflow-wrap:anywhere}
.game{padding:36px 0 28px}.hidden{display:none!important}.room-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:18px}.room-heading .eyebrow{margin-bottom:5px}.room-heading h2{margin:0;font:500 25px serif}.room-heading h2 button{background:none;color:inherit;font-weight:inherit;padding:0;border-bottom:1px dashed #9ba59f}.share,.secondary{height:40px;padding:0 19px;background:var(--ink);color:#fff;border-radius:3px;font-size:13px;font-weight:700}.players{display:grid;grid-template-columns:1fr auto 1fr;gap:22px;align-items:center;margin-bottom:18px}.player-card{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 4px}.player-card.opponent{justify-content:flex-end;text-align:right}.player-card small,.player-card strong{display:block}.player-card small{font-size:10px;color:var(--muted);margin-bottom:3px}.player-card b{font-size:11px;color:#4d8467;margin-left:auto}.player-card.opponent b{order:-1;margin-left:0;margin-right:auto}.stone{width:28px;height:28px;border-radius:50%;flex:none}.stone.black{background:radial-gradient(circle at 32% 27%,#637068,#111915 70%);box-shadow:0 3px 6px #999}.stone.white{background:radial-gradient(circle at 32% 27%,#fff,#d5d6cf 73%);box-shadow:0 3px 7px #aaa}.versus{font:12px serif;color:#869088;letter-spacing:.35em}
.board-wrap{width:min(66vh,680px,100%);margin:auto;padding:12px;background:#c9964e;border:1px solid rgba(76,52,22,.24);box-shadow:0 18px 45px rgba(31,40,30,.19)}#board{display:block;width:100%;aspect-ratio:1;background:#d9ad66;touch-action:manipulation;cursor:crosshair}.game-footer{min-height:72px;display:flex;justify-content:center;gap:30px;align-items:center;text-align:left}.game-footer>div{display:grid;grid-template-columns:auto 1fr;column-gap:10px}.game-footer strong{font:600 16px serif}.game-footer small{grid-column:2;color:var(--muted);margin-top:4px}.turn-dot{width:8px;height:8px;background:#8d9991;border-radius:50%;grid-row:1/3;margin-top:5px}.turn-dot.active{background:#3b7758;box-shadow:0 0 0 5px rgba(59,119,88,.1)}.secondary{background:#e0e6de;color:var(--ink)}footer{height:51px;border-top:1px solid var(--line);display:flex;gap:14px;align-items:center;justify-content:center;font-size:10px;letter-spacing:.18em;color:#8b948e}
#toast{position:fixed;left:50%;bottom:34px;transform:translate(-50%,20px);padding:11px 20px;background:rgba(21,35,29,.92);color:#fff;border-radius:3px;font-size:13px;opacity:0;pointer-events:none;transition:.25s}#toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:760px){.shell{padding:0 16px}.topbar{height:72px}.lobby{display:block;padding:48px 2px}.hero-copy h1{font-size:47px}.intro{margin-top:19px}.lobby-card{margin-top:38px;padding:24px}.game{padding-top:23px}.players{gap:8px}.versus{font-size:9px;letter-spacing:.15em}.player-card{gap:8px}.stone{width:23px;height:23px}.board-wrap{padding:7px}.game-footer{justify-content:space-between}.room-heading h2{font-size:21px}.share{padding:0 14px}.player-card b{display:none}}
@media(max-height:720px) and (min-width:761px){.board-wrap{width:min(59vh,600px)}.game{padding-top:20px}.players{margin-bottom:10px}.room-heading{margin-bottom:10px}}

.play-area{display:grid;grid-template-columns:minmax(480px,680px) 320px;align-items:stretch;justify-content:center;gap:22px}.board-column{min-width:0}.play-area .board-wrap{width:100%;margin:0}.game-footer{justify-content:space-between}.game-actions{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}.game-actions button{height:38px;padding:0 13px}.game-actions .guide-active{background:#b64e3d;color:#fff;border-color:#b64e3d}.danger{height:38px;padding:0 13px;border:1px solid #cbb9ad;background:#f4e9e2;color:#8e432f;border-radius:3px;font-size:13px;font-weight:700}
.chat-card{min-height:0;border:1px solid var(--line);background:rgba(251,248,239,.9);display:flex;flex-direction:column;box-shadow:0 16px 42px rgba(31,40,30,.08)}.chat-title{height:62px;padding:0 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.chat-title strong,.chat-title small{display:block}.chat-title strong{font:600 16px serif}.chat-title small{color:var(--muted);font-size:10px;margin-top:4px}.chat-title button{background:#e2e8df;color:var(--ink);width:34px;height:34px;border-radius:50%;font-size:20px}.sticker-panel{padding:10px;display:grid;grid-template-columns:repeat(5,1fr);gap:5px;border-bottom:1px solid var(--line)}.sticker-panel button{height:38px;background:#fffaf0;border:1px solid #e5dfd1;border-radius:3px;font-size:21px}.message-list{height:0;min-height:280px;flex:1;overflow-y:auto;padding:14px}.empty-chat{text-align:center;color:#9ba39e;font-size:12px;margin:50% 0}.message{display:flex;flex-direction:column;align-items:flex-start;margin:0 0 13px}.message.mine{align-items:flex-end}.message header{font-size:10px;color:#929a95;margin:0 4px 4px}.bubble{max-width:86%;background:#fff;padding:8px 11px;border:1px solid #e5e3db;border-radius:2px 9px 9px 9px;font-size:13px;line-height:1.55;overflow-wrap:anywhere}.mine .bubble{background:#dfe8dc;border-color:#d4dfd1;border-radius:9px 2px 9px 9px}.bubble.sticker{font-size:29px;background:transparent;border:0;padding:2px}.bubble.image{padding:3px;background:#fff}.bubble.image img{display:block;max-width:190px;max-height:190px;border-radius:4px;cursor:pointer}.chat-form{display:grid;grid-template-columns:38px 1fr 52px;gap:6px;padding:10px;border-top:1px solid var(--line)}.chat-form input{height:40px;min-width:0}.chat-form button{border-radius:3px;background:var(--ink);color:#fff;font-size:12px;font-weight:700}.chat-form button:first-child{background:#e2e8df;color:var(--ink);font-size:22px}
.modal{position:fixed;inset:0;background:rgba(15,28,22,.58);display:grid;place-items:center;padding:20px;z-index:20;backdrop-filter:blur(3px)}.modal-card{width:min(360px,100%);background:var(--cream);padding:30px;text-align:center;border-radius:5px;box-shadow:0 25px 80px rgba(0,0,0,.25)}.modal-symbol{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;margin:0 auto 15px;background:#e1e8dd;font-size:25px}.modal-card h3{font:600 22px serif;margin:0 0 9px}.modal-card p{color:var(--muted);font-size:13px;line-height:1.7;margin:0 0 22px}.modal-card>div{display:grid;grid-template-columns:1fr 1fr;gap:9px}.modal-card .primary{margin:0;height:44px}.modal-card .secondary{height:44px}
@media(max-width:920px){.play-area{grid-template-columns:minmax(0,650px)}.chat-card{height:420px;margin-top:8px}.board-wrap{margin:auto}.game-footer{align-items:flex-start;padding:12px 0}.game-actions{max-width:55%}}
@media(max-width:560px){.game-actions{max-width:52%;gap:5px}.game-actions button{padding:0 9px;font-size:12px}.game-footer>div:first-child{max-width:44%}.game-footer small{font-size:10px}.chat-card{height:390px}.message-list{min-height:220px}.room-heading-actions{gap:5px}.voice-button,.share{padding:0 9px;font-size:11px}}
.spectator-count{display:inline-block;margin-left:7px;padding:4px 8px;border-radius:12px;background:#e5ebe1;color:#5f7065;font:600 11px sans-serif;vertical-align:middle}.room-heading-actions{display:flex;align-items:center;gap:8px}.voice-button{height:40px;padding:0 15px;border:1px solid #c8d2ca;background:#e2e8df;color:var(--ink);border-radius:3px;font-size:13px;font-weight:700;transition:.2s}.voice-button.active{color:#fff;background:var(--voice);border-color:var(--voice);box-shadow:0 0 0 4px rgba(56,116,86,.1)}.voice-button.connecting{color:#7a5a2d;background:#f2e5ca;border-color:#ddc695}.voice-button:disabled{cursor:wait;opacity:.72}#remoteAudio,audio[data-player-id]{display:none}
.top-actions{display:flex;align-items:center;gap:14px}.text-button,.back-button{padding:0;background:none;color:var(--muted);font-size:12px}.text-button:hover,.back-button:hover{color:var(--ink)}.user-summary{font-size:12px;color:var(--ink);padding-left:12px;border-left:1px solid var(--line)}
.platform{padding:72px 5% 90px}.platform-heading{max-width:650px;margin-bottom:38px}.platform-heading h1{font:500 clamp(38px,5vw,64px)/1.2 serif;margin:0 0 17px}.platform-heading>p:last-child{color:var(--muted);line-height:1.8}.game-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.game-card{min-height:190px;padding:27px;text-align:left;border:1px solid var(--line);background:rgba(251,248,239,.86);display:grid;grid-template-columns:auto 1fr;gap:19px;align-items:center;box-shadow:0 15px 44px rgba(28,48,37,.07);transition:.2s}.game-card:hover{transform:translateY(-4px);box-shadow:0 22px 55px rgba(28,48,37,.12)}.game-card>span{display:grid;place-items:center;width:62px;height:62px;border-radius:50%;background:#d7ad68;color:#45321e;font:600 29px serif}.game-card strong,.game-card small{display:block}.game-card strong{font:600 23px serif}.game-card small{color:var(--muted);font-size:11px;margin-top:7px}.game-card b{grid-column:2;color:#98703b;font-size:12px}
.back-button{margin-bottom:30px}.online-rooms{margin-top:34px;max-width:520px}.rooms-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.room-list{display:grid;gap:8px;max-height:250px;overflow:auto}.room-list>p{color:var(--muted);font-size:12px}.room-item{display:grid;grid-template-columns:1fr auto;align-items:center;padding:12px 14px;border:1px solid var(--line);background:rgba(255,255,255,.48);color:var(--ink);text-align:left}.room-item strong,.room-item small{display:block}.room-item small{color:var(--muted);margin-top:4px;font-size:10px}.room-item b{color:#966c34;font-size:11px}
.auth-modal{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:20px;background:rgba(14,29,22,.7);backdrop-filter:blur(7px)}.auth-card{width:min(420px,100%);max-height:calc(100vh - 30px);overflow:auto;background:var(--cream);padding:30px;border-radius:6px;box-shadow:0 28px 90px rgba(0,0,0,.3)}.auth-brand{display:flex;align-items:center;gap:14px;margin-bottom:24px}.auth-brand strong,.auth-brand small{display:block}.auth-brand strong{font:600 20px serif}.auth-brand small{font-size:10px;color:var(--muted);margin-top:4px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line);margin-bottom:22px}.auth-tabs button{height:42px;background:none;color:var(--muted);border-bottom:2px solid transparent}.auth-tabs button.active{color:var(--ink);border-color:var(--ink);font-weight:700}.auth-form h2{font:500 25px serif;margin:0 0 21px}.auth-form label{margin-top:13px}.auth-form label input{display:block;margin-top:7px}.auth-error{min-height:20px;color:#a74636;font-size:12px;margin:13px 0 0;text-align:center}.stone.red{background:radial-gradient(circle at 32% 27%,#de6655,#8f201c 73%);box-shadow:0 3px 7px #aaa}
@media(max-width:820px){.game-grid{grid-template-columns:1fr}.platform{padding:48px 0}.game-card{min-height:130px}.top-actions .user-summary{display:none}.lobby{gap:35px}.online-rooms{max-width:none}}