:root{color-scheme:light;--paper:#f5f4ee;--ink:#243b38;--muted:#64736b;--green:#29564b;--line:#d9ddd2;--lime:#dbea91;--white:#fdfdf9;font-family:Arial,'PingFang SC','Microsoft YaHei',sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-size:15px;line-height:1.7}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #719978;outline-offset:4px}button,input{border-radius:6px}button{transition:background .15s,transform .15s}button:not(:disabled):active{transform:translateY(1px)}[hidden]{display:none!important}header,main,footer{max-width:1180px;margin:auto;padding-inline:44px}header{display:flex;align-items:center;justify-content:space-between;height:105px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:1px;font-size:17px}.brand-icon{display:inline-flex;align-items:center;justify-content:center;background:var(--green);color:var(--lime);height:43px;width:43px;border-radius:10px;font-family:Georgia,serif;font-size:30px;letter-spacing:-3px;font-weight:400}.brand-icon>span{font-size:25px;align-self:flex-start}.brand small{display:block;font-size:8px;letter-spacing:2px;font-weight:400;line-height:1.4;color:var(--muted)}.connection{font-size:11px;display:flex;align-items:center;gap:8px;color:var(--muted)}.connection i{width:6px;height:6px;background:#9da89b;border-radius:50%}.connection.online i{background:#427660}.connection.offline i{background:#b55c3d}.intro{padding:48px 0 37px}.eyebrow{font-size:10px;letter-spacing:1.6px;font-weight:600;margin:0;color:var(--muted)}h1{font-size:42px;line-height:1.4;letter-spacing:-1.6px;font-weight:500;margin:13px 0 10px}h1 em{font-style:normal;color:#72834e}.intro>p:last-child{font-size:13px;color:var(--muted);margin:0}.mobile-break{display:none}.layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(260px,1fr);gap:30px;align-items:start}.arena{background:var(--white);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 4px 20px #283b3110}.arena-top{display:flex;align-items:center;justify-content:space-between;padding:17px 26px;border-bottom:1px solid var(--line)}.room-status{font-size:10px;color:var(--green);border:1px solid #d6e0cd;background:#eff3e8;border-radius:20px;padding:2px 10px}#lobby{padding:35px 34px 28px;text-align:center}.lobby-art{position:relative;display:flex;justify-content:center;gap:11px;padding:25px 0 48px;margin:0 auto 15px;max-width:325px;background:radial-gradient(ellipse at center,#e8eee0 0,transparent 70%)}.digit-tile{width:65px;height:85px;background:#e9ece2;border:1px solid #cbd3c3;border-radius:9px;font:42px/83px Georgia,serif;box-shadow:0 5px 0 #cbd3c344;transform:rotate(-7deg)}.digit-tile.raised{background:var(--green);color:var(--lime);border-color:var(--green);transform:translateY(-12px) rotate(3deg)}.digit-tile:nth-child(3){transform:rotate(10deg)}.art-note{position:absolute;bottom:13px;font-size:8px;letter-spacing:2px;color:#718166}.arena h2{font-size:24px;line-height:1.5;font-weight:500;margin:0 0 9px;letter-spacing:-.5px}#lobby>p{font-size:13px;color:var(--muted);margin:0 0 25px}.primary{display:inline-flex;justify-content:space-between;align-items:center;gap:30px;background:var(--green);color:#fff;border:1px solid var(--green);padding:12px 20px;font-size:13px;font-weight:500;min-height:46px}.primary:hover:not(:disabled){background:#204439}.primary span{color:var(--lime)}#join{min-width:220px}#lobby .lobby-note{font-size:10px;margin:18px 0 0;letter-spacing:.5px}.small{font-size:11px;color:var(--muted)}.rules{background:#ebeee2;padding:28px;border-radius:10px;border:1px solid #dce2d3}.rules h2{font-size:24px;font-weight:500;line-height:1.55;letter-spacing:-.5px;margin:15px 0 25px}.rules ol{list-style:none;margin:0;padding:0}.rules li{display:flex;gap:15px;margin:22px 0}.rules li>span{font-size:10px;font-family:monospace;color:#6d8157;padding-top:3px}.rules strong{font-size:13px;font-weight:600}.rules li p{font-size:12px;line-height:1.9;margin:5px 0 0;color:var(--muted)}.example{margin-top:27px;border-top:1px solid #d0d8c6;padding-top:18px;font-size:11px}.example p{margin:0 0 10px}.example b{font-family:monospace;font-size:14px;letter-spacing:1px}.example>div{display:flex;justify-content:space-between;gap:10px}.example-match{background:#dce7c6;padding:2px 9px;border-radius:4px;font-size:10px;color:#435835}.rule-note{margin:18px 0 0;line-height:1.9}.share{background:none;border:1px solid #bdcaba;display:flex;width:100%;justify-content:space-between;margin-top:16px;padding:13px 18px;font-size:12px;color:var(--green)}#share-status{margin:7px 0;min-height:18px;overflow-wrap:anywhere}footer{display:flex;justify-content:space-between;gap:16px;font-size:10px;color:var(--muted);padding-block:35px;margin-top:25px}.footer-dot{padding:0 10px;color:#abb599}#active{padding:26px}.players{display:flex;gap:14px;align-items:center;justify-content:space-between}.player{display:flex;gap:9px;align-items:center;flex:1;border:1px solid var(--line);padding:12px;border-radius:7px;min-width:0}.player.mine{background:#f0f4e9;border-color:#b3c39e}.player-index{font:11px monospace;color:#788968}.player strong{display:block;font-size:12px;white-space:nowrap}.player strong small{font-size:9px;color:#627b4d;font-weight:400}.player p{font-size:9px;color:var(--muted);margin:3px 0 0;white-space:nowrap}.player b{margin-left:auto;font:24px Georgia,serif}.versus{font:10px Georgia,serif;color:#89947f}.round-bar{display:flex;justify-content:space-between;gap:14px;padding:18px 0;margin-bottom:15px;border-bottom:1px solid var(--line);font-size:11px;color:var(--muted)}#status-copy{font-size:13px;color:var(--muted);margin:0 0 24px}form label{display:block;font-size:12px;font-weight:500;margin-bottom:9px}form label span{color:var(--muted);font-weight:400}input{width:100%;background:#fafbf6;border:1px solid #becbb4;color:var(--ink);padding:12px 14px;font-size:20px;min-width:0}input:focus{outline:2px solid #6f8859;outline-offset:1px}.length-row{display:flex;align-items:center;gap:14px}.length-row input{width:75px}.length-row>span{font-size:13px}.length-row small{display:block;font-size:10px;color:var(--muted);white-space:nowrap}.length-row button{margin-left:auto;gap:10px}.secret-row{display:flex;position:relative}.secret-row input{padding-right:64px;letter-spacing:3px;font-family:monospace}.reveal{border:0;background:transparent;color:var(--green);position:absolute;right:8px;top:8px;font-size:11px;padding:10px;letter-spacing:0}.input-note{font-size:11px;line-height:1.7;color:var(--muted)}.secret-row+p{margin:8px 0 17px}.guess-input{font-family:monospace;font-size:28px;letter-spacing:4px;padding:16px}.guess-input::placeholder{font-family:Arial,sans-serif;font-size:16px;letter-spacing:0;color:#8a9581}.guess-footer{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-top:16px}.guess-footer button{gap:15px}.waiting{display:flex;gap:10px;align-items:center;padding:17px;background:#eef1e7;border-radius:6px;font-size:12px;color:#657553}.waiting-dot{display:block;width:6px;height:6px;background:#8eab68;border-radius:50%}.active-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid var(--line);margin-top:30px;padding-top:17px}.text-button{border:0;background:none;color:#8b5745;font-size:11px;padding:7px 0}.error{font-size:12px;margin:18px 26px 0;border:1px solid #dfbfb2;color:#8b3d28;background:#fff0e9;padding:12px;border-radius:6px}.result{padding:23px 26px;background:#e9f0d5;border-bottom:1px solid #c5d4af}.result h2{margin:9px 0;font-size:28px}.result p{font-size:12px;margin:0;color:#4c6042}.history-section{margin-top:27px}.history-heading{display:flex;align-items:center;justify-content:space-between}.history-heading h2{font-size:16px;font-weight:500;margin:0}.history-empty{padding:30px 0;color:#87907d;font-size:12px}.history-row{display:grid;grid-template-columns:.6fr 1.3fr 1fr;align-items:center;gap:12px;padding:14px 17px;border-bottom:1px solid var(--line);font-size:12px}.history-label{font-size:10px;color:var(--muted);margin-top:17px;background:#eaece3;border-radius:6px 6px 0 0}.history-row>span:last-child{text-align:right}.history-row .number{font:20px monospace;letter-spacing:2px;overflow-wrap:anywhere;min-width:0}.history-row.hit{background:#e8efdb}.match-pill{font-size:11px;color:#3f6543}.history-note{margin:12px 0}#history{list-style:none;padding:0;margin:0}.round-number{color:#7b8772;font-family:monospace}
@media(max-width:960px){header,main,footer{padding-inline:28px}.layout{gap:22px;grid-template-columns:minmax(0,1.5fr) minmax(240px,1fr)}.rules{padding:23px}.players{gap:8px}.player{padding:9px;gap:7px}.player-index{display:none}.arena h2{font-size:22px}#active{padding:23px}}
@media(max-width:740px){header,main,footer{padding-inline:20px}header{height:84px}.brand{font-size:15px}.brand-icon{width:38px;height:38px;font-size:27px}.connection{font-size:10px}.intro{padding:32px 0 27px}h1{font-size:30px;letter-spacing:-1px}.intro>p:last-child{font-size:12px}.mobile-break{display:block}.layout{grid-template-columns:1fr;gap:26px}.arena-top{padding:15px 20px}.arena-top .eyebrow{font-size:9px}#lobby{padding:26px 20px}#active{padding:20px}.players{gap:9px}.player{padding:10px 9px}.player strong{font-size:11px}.player b{font-size:22px}.player p{font-size:9px}.length-row{gap:10px}.length-row input{width:65px}.length-row button{padding:12px;gap:10px}.guess-footer{align-items:flex-start}.guess-footer .input-note{max-width:130px}.guess-footer .primary{white-space:nowrap}.guess-input{font-size:24px;letter-spacing:2px}.history-row{padding:13px 10px;gap:8px;grid-template-columns:.45fr 1.3fr 1fr}.history-row .number{font-size:17px;letter-spacing:1px}.rules h2 br{display:none}.rules h2{font-size:22px;margin:12px 0}.rules li{margin:17px 0}.rules{padding:24px}.error{margin:16px 20px 0}.result{padding:22px 20px}footer{font-size:9px;flex-wrap:wrap;margin-top:7px;padding-block:25px}.active-footer>.small{font-size:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}