:root{color-scheme:dark;--bg:#191d1b;--panel:#212623;--line:#39423b;--ink:#f0f1e9;--muted:#a6afa5;--accent:#c3de8c;--scene:#f6f5ef;font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}button,a,summary{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:disabled{opacity:.4;cursor:wait}button:focus-visible,a:focus-visible,summary:focus-visible,.stage:focus-visible{outline:2px solid var(--accent);outline-offset:5px}a{color:inherit;text-decoration:none}.app{max-width:1440px;margin:auto;padding:0 5vw}.topbar{height:100px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.wordmark{display:flex;align-items:center;gap:12px;font-size:22px;letter-spacing:.16em;font-weight:600}.brand-mark{font-size:36px;color:var(--accent);font-weight:400}.wordmark-sub{font-size:12px;font-weight:400;letter-spacing:.12em;color:var(--muted);border-left:1px solid var(--line);padding-left:17px;margin-left:5px}.edition{font-family:monospace;font-size:10px;color:var(--muted);letter-spacing:.2em}.game-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:48px;align-items:center;margin:50px 0 36px}.play-panel{min-width:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 20px 65px #0002}.scene-bar{height:54px;display:flex;align-items:center;justify-content:space-between;background:var(--panel);padding:0 22px;font-size:11px;color:var(--muted);letter-spacing:.08em}.level{color:var(--ink);font-size:13px;display:flex;align-items:center;gap:10px}.live-dot{height:6px;width:6px;border-radius:50%;background:var(--accent)}.stage{position:relative;width:100%;aspect-ratio:4/3;background:var(--scene);color:#303b32;overflow:hidden;touch-action:manipulation;user-select:none}.stage>svg{display:block;width:100%;height:100%;background:var(--scene)}.loading{position:absolute;inset:0;display:grid;align-content:center;justify-items:center;gap:14px;font-size:17px;letter-spacing:.1em}.loading span{font-size:12px;opacity:.5}.scene-footer{height:46px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 20px;background:var(--panel);font-size:11px;color:var(--muted)}.scene-footer>span:last-child{font-family:monospace;color:#7e897d}.tiny-diamond{color:var(--accent);font-size:18px;margin-right:6px;vertical-align:-1px}.eyebrow{font-size:10px;letter-spacing:.13em;color:var(--accent)}h1{font-size:30px;line-height:1.65;font-weight:500;letter-spacing:.04em;margin:14px 0}h1 em{font-style:normal;color:var(--accent)}.intro{font-size:12px;line-height:1.95;color:var(--muted);margin:0 0 24px}.controls-section{border-top:1px solid var(--line);padding-top:20px}.section-label{display:flex;justify-content:space-between;align-items:center;font-size:12px}.section-label>span:last-child{font-size:10px;color:var(--muted)}.direction-pad{display:grid;grid-template-columns:72px 20px 72px;grid-template-rows:64px 12px 64px;justify-content:center;margin:21px 0 12px}.move{border:1px solid #485044;border-radius:9px;background:#2a312b;color:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;touch-action:none;user-select:none;transition:background .12s,border-color .12s,transform .12s}.move:hover{background:#354031;border-color:#839572}.move.held,.move:active{background:var(--accent);border-color:var(--accent);color:var(--bg);transform:scale(.96)}.arrow{font-size:23px;line-height:1}kbd{font:11px monospace;color:inherit;opacity:.75}.northwest{grid-column:1;grid-row:1}.northeast{grid-column:3;grid-row:1}.southwest{grid-column:1;grid-row:3}.southeast{grid-column:3;grid-row:3}.pad-center{grid-column:2;grid-row:2;text-align:center;align-self:center;font-size:14px;color:var(--accent)}.control-hint{font-size:10px;text-align:center;color:var(--muted);margin:0 0 17px}.status{font-size:12px;line-height:1.7;min-height:40px;color:var(--accent);margin:15px 0 10px}.status.error{color:#ffb9a7}.restart,.retry{width:100%;min-height:44px;border:1px solid #58654c;border-radius:7px;background:transparent;color:var(--ink);font-size:12px;letter-spacing:.06em}.restart:hover,.retry:hover{background:#303a2c;border-color:var(--accent)}.restart>span{font-size:19px;vertical-align:-1px;margin-right:6px}.retry{margin-top:10px;color:var(--accent)}[hidden]{display:none!important}.help{margin-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}summary{list-style:none;display:flex;justify-content:space-between;cursor:pointer;padding:16px 0;min-height:44px}summary::-webkit-details-marker{display:none}.help[open] summary>span{transform:rotate(45deg)}.help>div{font-size:11px;line-height:1.9;padding-bottom:10px}.page-footer{display:flex;justify-content:space-between;padding:22px 0;border-top:1px solid var(--line);font-size:10px;color:#8d988c;letter-spacing:.07em}@media(min-width:1500px){.game-layout{margin-top:65px}}@media(max-width:1050px){.app{padding:0 3vw}.game-layout{grid-template-columns:minmax(0,1fr) 230px;gap:26px;margin-top:32px}h1{font-size:26px}.scene-bar{padding:0 14px}.scene-footer{padding:0 12px}.intro{margin-bottom:18px}}@media(max-width:760px){.app{padding:0 18px}.topbar{height:74px}.wordmark{font-size:19px;gap:9px}.wordmark-sub{font-size:10px;padding-left:12px}.edition{display:none}.game-layout{grid-template-columns:1fr;gap:25px;margin:24px 0}.play-panel{border-radius:9px}.scene-bar{height:43px;font-size:10px}.level{font-size:12px}.scene-footer{height:37px;font-size:9px}.console{display:grid;grid-template-columns:1fr 1fr;column-gap:23px;align-items:start}.console-heading{grid-column:1;grid-row:1}.eyebrow{font-size:9px}h1{font-size:23px;margin:9px 0;line-height:1.55}.intro{grid-column:1;grid-row:2;font-size:10px;line-height:1.9;margin-bottom:10px}.controls-section{grid-column:2;grid-row:1/4;border:0;padding:0}.section-label{font-size:11px}.section-label>span:last-child{display:none}.direction-pad{grid-template-columns:58px 15px 58px;grid-template-rows:54px 10px 54px;margin:14px 0 12px}.control-hint{font-size:9px;line-height:1.8}.status{grid-column:1;grid-row:3;font-size:11px;min-height:35px;margin:0 0 12px}.restart{grid-column:1;grid-row:4}.retry{grid-column:2;grid-row:4}.help{grid-column:1/-1;grid-row:5;margin-top:19px}.page-footer{font-size:9px;padding:18px 0}.help>div{font-size:12px}.scene-footer>span:last-child{font-size:9px}}@media(max-width:360px){.app{padding:0 12px}.console{column-gap:13px}h1{font-size:21px}.wordmark-sub{display:none}.scene-footer{font-size:8px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}