:root{color-scheme:dark;font-family:Consolas,"Microsoft YaHei",monospace;color:#dce9ea;background:#080f18;--cyan:#3bf5e8;--gold:#ffc242}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(ellipse at 15% 25%,#12303b55,transparent 60%),linear-gradient(#17303c22 1px,transparent 1px),linear-gradient(90deg,#17303c22 1px,transparent 1px),#080f18;background-size:auto,42px 42px,42px 42px,auto}
main{width:min(1600px,calc(100% - 64px));margin:28px auto}header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:20px}.brand{display:flex;align-items:center;gap:18px}.mark{color:var(--cyan);font-size:36px;font-weight:bold;letter-spacing:-10px;margin-right:8px}h1{font-size:24px;letter-spacing:2px;margin:0 0 7px}h1 span{color:var(--gold)}header p{color:#769099;font-size:11px;letter-spacing:2px;margin:0}
button{font:inherit;cursor:pointer;border:1px solid #31515c;color:#b9d8dc;background:#12232d;padding:11px 18px;font-size:12px}button:hover,button:focus-visible{border-color:var(--cyan);color:var(--cyan)}button span{margin-left:14px}.player{width:min(100%,calc((100vh - 210px) * 1.6));min-height:240px;aspect-ratio:16/10;margin:auto;position:relative;border:1px solid #29444f;box-shadow:0 22px 100px #0008;background:#050b12}canvas{display:block;width:100%;height:100%;outline:none}
#loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#09131e}#loading[hidden],#error[hidden]{display:none}.loading-mark{color:var(--gold);font-size:72px;letter-spacing:-15px;padding-right:15px}h2{font-size:18px;letter-spacing:3px;margin:20px 0 4px}#progress-label{font-size:13px;color:#819ba4}.progress{width:min(320px,70%);height:5px;background:#1a303a;margin-top:12px}.progress span{display:block;height:100%;background:var(--cyan);width:0;transition:width .2s}#error{position:absolute;inset:0;display:grid;place-content:center;padding:48px;color:#ffd18b;background:#101c28;line-height:1.9;white-space:pre-wrap;text-align:center}
kbd{font:inherit;font-weight:bold;color:#d5e9ec;background:#152a35;border:1px solid #385560;padding:4px 8px;white-space:nowrap}
.game-guide{max-width:1120px;margin:44px auto 0;text-align:left;font-size:14px;color:#a5b9c0;line-height:1.85;overflow-wrap:anywhere}
.guide-section{padding:32px 0;border-top:1px solid #29444f}.game-guide h2{font-size:17px;line-height:1.5;letter-spacing:2px;color:var(--gold);margin:0 0 22px}.game-guide h3{font-size:14px;line-height:1.7;letter-spacing:.6px;color:var(--cyan);margin:0 0 16px}.game-guide p{margin:0 0 16px}.game-guide p:last-child{margin-bottom:0}.game-guide strong{color:#dce9ea}.game-guide .tagline{color:#dce9ea;margin-bottom:20px}.guide-intro{max-width:78ch}
.controls-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin:0 0 24px}.controls-grid>div{padding:16px 0;border-bottom:1px solid #29444f}.controls-grid dt{margin-bottom:12px}.controls-grid dd{margin:0;font-size:13px}
.story-grid,.shortcut-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.guide-card{padding:22px;background:#0b1720;border:1px solid #29444f}.reading-copy{max-width:82ch}.challenge-list{list-style:none;padding:0;margin:20px 0 28px}.challenge-list li{margin:10px 0}.memory-callout{border-left:3px solid #ad8bdd;padding:12px 18px;background:#ad8bdd0b}.memory-callout strong{color:#cfb4ff}.shortcut-grid{margin-top:24px}.shortcut-grid h3{font-size:13px}.guide-signoff{text-align:center;border-top:1px solid #29444f;padding:36px 0 20px}.guide-signoff>p:first-child{letter-spacing:2px;font-size:17px}.game-guide .credit{font-size:12px;color:#8ba5af}
@media(max-width:1000px){.story-grid,.shortcut-grid{grid-template-columns:1fr}.guide-card{padding:22px}.reading-copy{max-width:none}}
@media(max-width:700px){main{width:calc(100% - 24px);margin:18px auto}.brand{gap:10px}.mark{font-size:25px}h1{font-size:16px;letter-spacing:0}header p{font-size:8px;letter-spacing:1px}button{padding:9px;font-size:11px}button span{display:none}.player{width:100%;min-height:0}.game-guide{font-size:13px;margin-top:28px}.game-guide h2{font-size:15px;letter-spacing:1px}.controls-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px}.guide-section{padding:26px 0}.guide-card{padding:18px}}