/* 氛围层：仅使用浏览器绘图，没有外部图片、字体或素材请求。 */
:root{--bg:#080e12;--surface:#101a20;--line:#2a3b45;--text:#e5edf1;--muted:#a0b2bd;--green:#9ce8c3;--orange:#edbf8d}
body{background:radial-gradient(ellipse at 12% 52%,#11363b88,transparent 44%),radial-gradient(ellipse at 85% 0%,#18253b70,transparent 45%),#080e12;min-height:100vh}body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;background-image:linear-gradient(#6993a507 1px,transparent 1px),linear-gradient(90deg,#6993a507 1px,transparent 1px);background-size:64px 64px}header{background:#080e12b3;height:76px;border-bottom-color:#34465380}.brand{letter-spacing:3px}.header-actions{display:flex;gap:8px}.header-actions button{font-size:12px;border-color:transparent;color:var(--muted)}.header-actions button[aria-pressed=true]{color:var(--green)}main{padding-top:44px;gap:32px}.intro .eyebrow{color:#84b2b5}h1{font-size:clamp(30px,3vw,48px);margin-top:26px;font-weight:500;text-shadow:0 0 45px #9ce8c314}.cursor{animation:blink 1.4s steps(2,end) infinite}.intro p{font-size:15px;line-height:2}.intro-bottom{margin-top:22px;font-size:12px}.rack-scene{height:250px;position:relative;margin-top:30px;perspective:700px;isolation:isolate}.rack-shadow{position:absolute;width:210px;height:110px;left:10px;bottom:-20px;background:#79d1c82a;filter:blur(38px);border-radius:50%}.rack{position:absolute;width:205px;left:15px;top:0;padding:17px 13px 14px;background:linear-gradient(100deg,#25363d,#0a131b 25%,#132129 85%,#2d424e);border:1px solid #435c69;border-radius:4px;box-shadow:14px 12px 0 -1px #0a1015,15px 12px 0 #2a3c49,-12px 0 60px #7bccb90d;transform:rotateY(-13deg) rotateX(4deg) rotateZ(-2deg)}.rack-label{font-size:8px;color:#8196a5;letter-spacing:1px;margin-bottom:12px}.rack-unit{height:26px;border:1px solid #2d3c46;margin-top:4px;background:linear-gradient(#1c2b35,#101a22);display:flex;align-items:center;padding:0 7px;gap:5px;box-shadow:inset 0 1px #ffffff05}.rack-vents{height:12px;flex:1;margin-right:22px;background:repeating-linear-gradient(90deg,#050b10 0px,#050b10 2px,transparent 2px,transparent 5px)}.rack-led{width:4px;height:4px;border-radius:50%;background:var(--green);box-shadow:0 0 7px #9ce8c3;animation:activity 3s steps(1) infinite}.rack-unit:nth-child(3n) .rack-led{animation-delay:1s}.rack-unit:nth-child(2n) .rack-led{animation-delay:2.2s}.rack-led.dim{background:#c19763;box-shadow:0 0 5px #c1976388;animation:none}.rack-caption{display:flex;justify-content:space-between;align-items:center;font-size:8px;color:#8095a1;margin-top:14px;letter-spacing:1px}.rack-caption span{font-size:15px;color:#b4c5d0}.console{border:1px solid #45616e;border-radius:9px;background:linear-gradient(125deg,#131f28,#0f181e 70%);box-shadow:0 30px 80px #0006,0 0 0 5px #111e2640;position:relative}.console-bar{background:#1b2932;padding:16px 20px;border-bottom-color:#38505e;font-size:13px}#clock{color:var(--green);font-size:19px;letter-spacing:2px;font-variant-numeric:tabular-nums}.status-bar{background:#0e171d;padding:11px 20px}.telemetry{display:flex;align-items:center;justify-content:space-between;padding:13px 20px;border-bottom:1px solid #233641}.chapter-track{display:flex;gap:7px}.chapter-track span{width:25px;height:23px;font-size:10px;text-align:center;color:#8aa1ae;border-bottom:2px solid #344653}.chapter-track .current{color:var(--green);border-color:var(--green)}.chapter-track .done{color:#b8d3c8;border-color:#547e73}.power-track{display:flex;align-items:center;gap:9px;font-size:10px;color:var(--muted)}meter{width:76px;height:6px;background:#263a42;border:0;border-radius:2px;appearance:none}meter::-webkit-meter-bar{background:#263a42;border:0;border-radius:2px}meter::-webkit-meter-optimum-value{background:var(--green)}meter::-webkit-meter-suboptimum-value{background:var(--orange)}meter::-moz-meter-bar{background:var(--green)}.transcript{height:390px;background-image:repeating-linear-gradient(0deg,transparent 0px,transparent 3px,#a2bec702 3px,#a2bec702 4px);scrollbar-color:#3f5e6b transparent}.message{padding-bottom:26px;animation:none}.message.new-message{animation:appear .4s ease-out}.message.system p{color:#adbec8;font-size:14px}.message.system .sender{color:#ccae87}.message .sender{font-size:11px;letter-spacing:1.5px}.message p{line-height:1.95}.message.player{border-left-color:#547a72}.action-zone{background:#14222b;border-color:#334c5a}.action-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}.action-top .action-label{margin:0}#skip-message{font-size:12px;border:0;padding:0;color:var(--green)}.choice{background:#1a3038;border-color:#41636a;border-radius:5px;padding:12px 15px;transition:background .15s,transform .15s,border-color .15s}.choice:hover:enabled{background:#24464b;border-color:var(--green);transform:translateX(2px)}.choice.danger{background:#30251f;border-color:#796144}.choice.locked{background:#15212a;color:#9eb0bb;border-color:#31424e;line-height:1.8}.choice:disabled{opacity:.65}.choice .choice-number{font-size:11px;opacity:.65;margin-right:10px;border:1px solid #789e9255;padding:0 4px;border-radius:2px}.choice .choice-label{flex:1;color:inherit}.side{gap:24px}.panel{padding:18px;background:#14202b88;border:1px solid #304754;border-radius:7px}.panel .eyebrow{font-size:10px;color:#829eac}h2{font-size:17px;margin-top:9px}.panel .small{font-size:14px}.panel p{line-height:1.9}#commands button{background:#22313d;color:#bed1dc;border-color:#3b5361;padding:5px 9px}#commands button:hover{border-color:var(--green);color:var(--green)}.input-row{background:#0b151c;border:1px solid #354c58;border-radius:4px;padding:0 10px;margin-top:9px}pre{background:#0a141b;border:1px solid #223843;border-radius:4px;padding:12px;color:#b4c8d2;font-size:12px;min-height:84px;margin-bottom:0}#evidence-list details:last-child{border-bottom:0}summary{font-size:14px;line-height:1.8}.ending-title{margin:5px 0 10px;font-family:"PingFang SC",sans-serif;color:var(--green);font-size:24px}.ending-title:before{content:"ARCHIVE / END OF SESSION";display:block;font:10px/2 ui-monospace,monospace;letter-spacing:2px;color:var(--muted);margin-bottom:8px}dialog{background:#13232d;border-color:#527381;box-shadow:0 30px 100px #0008}footer{border-top-color:#34465380}body[data-ending=release] .rack-led{background:#e5b27e;box-shadow:0 0 9px #e5b27e}body[data-ending=shutdown] .rack-led{animation:none;background:#394751;box-shadow:none}body.low-power #power{color:var(--orange)}.typing-indicator{font-size:12px;color:var(--green);padding:4px 0 20px;animation:blink 1.5s steps(2,end) infinite}
@keyframes blink{0%,55%{opacity:1}56%,100%{opacity:.35}}@keyframes activity{0%,25%,75%{opacity:1}26%,74%{opacity:.25}}@media(min-width:1450px){.transcript{height:465px}.rack-scene{margin-top:45px;height:290px}.rack{transform:scale(1.15) rotateY(-13deg) rotateX(4deg) rotateZ(-2deg);transform-origin:top left}}@media(max-width:1150px){.rack-scene{display:none}.intro h1{margin:0 25px 0 0;font-size:32px}.intro-bottom{margin-top:0}.transcript{height:420px}}@media(max-width:680px){header{height:66px}.header-actions{gap:2px}.header-actions button{padding:6px}.brand{letter-spacing:1.5px;font-size:12px}main{padding:24px 14px}.intro h1{font-size:30px;margin:12px 0}.intro-bottom{margin-top:12px}.intro p{font-size:14px}.transcript{height:360px}.console{border-radius:7px}.console-bar{padding:12px 15px}.telemetry{padding:10px 15px}.chapter-track{gap:5px}.panel{padding:18px}.status-bar{padding:10px 15px}.choice{padding:13px 12px;min-height:48px}.choice .choice-number{display:none}.action-label{font-size:11px}.console-bar #clock{font-size:17px}footer>div{flex-wrap:wrap}.header-actions button{font-size:11px}}@media(prefers-reduced-motion:reduce){.cursor,.rack-led,.typing-indicator,.message.new-message{animation:none}.choice{transition:none}}