@charset "UTF-8";
:root{color-scheme:dark;--ink:#302b25;--paper:#e9dfc7;--paper-light:#f1e9d8;--red:#8b2f27;--bg:#161512;--cream:#eee5d4;--gold:#c7ae7b;--muted:#b9b09f;--line:#c8bda439;--serif:Georgia,'Songti SC','Noto Serif CJK SC',serif;--sans:'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;--mono:'Courier New',Consolas,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#171613;color:var(--cream);font:15px/1.65 var(--sans);background-image:linear-gradient(#171613ec,#171613f5),url(manor.png);background-size:cover;background-attachment:fixed}button,input,select,textarea{font:inherit}button,a,select,textarea{touch-action:manipulation}button{cursor:pointer;color:inherit}button:disabled{cursor:not-allowed;opacity:.43}button,a{transition:background .16s,color .16s,transform .16s}button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #b58a42;outline-offset:4px}a{color:inherit}button{border-radius:0}button:hover:not(:disabled){filter:brightness(1.07)}.skip{position:absolute;left:20px;top:-80px;z-index:90}.skip:focus{top:10px;background:var(--paper);color:var(--ink);padding:12px 18px}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
/* Case 008: tape transport, paper timing traces and clock ledger. */
.opening h1 em{font-size:1.55em;line-height:.9;margin:10px 0 0}.opening h1 small{letter-spacing:.2em}.point-two{left:85%;top:63%}.point-three{left:88%;top:84%}.trace{margin:14px 0;padding:12px 14px 10px;background:#e3d7b9;border:1px solid #a18e6f55}.trace-title{display:flex;align-items:center;justify-content:space-between;gap:10px;font:9px var(--mono);letter-spacing:.05em;color:#816343}.trace-title button{background:none;border:1px solid #96744d80;color:#785334;font:10px var(--mono);padding:5px 8px;min-width:64px}.trace-title button.playing{background:#8b2f27;color:#f6e7cd}.trace svg{display:block;width:100%;margin:10px 0 7px}.trace-times{font:10px var(--mono);color:#92764f}.tape-machine{display:flex;align-items:center;justify-content:space-around;padding:17px 20px;background:#464238;border:5px solid #756749;box-shadow:inset 0 0 15px #0005;margin:25px 0 20px}.tape-machine>span{text-align:center;font:9px/1.8 var(--mono);letter-spacing:.13em;color:#c6b98f}.reel-wheel{width:86px;height:86px;position:relative;border-radius:50%;border:6px solid #af9b73;background:repeating-conic-gradient(#746647 0deg 18deg,#ad9b76 18deg 40deg,#3a362b 40deg 78deg,#ad9b76 78deg 100deg);box-shadow:0 2px 7px #0008}.reel-wheel:before{content:'';position:absolute;inset:28%;border:4px solid #a28e64;border-radius:50%;background:#514934}.reel-wheel:after{content:'';position:absolute;inset:43%;background:#c0b18a;border-radius:50%}.bench-field{display:block;font:12px/1.7 var(--mono);color:#775b3b;margin-top:22px}.bench-field select,.bench-field input,.clock-setting select,.ledger-row select,.field input[type=time]{display:block;width:100%;margin-top:8px;padding:11px 9px;min-height:44px;background:#f3ebd8;color:#4c3b27;border:1px solid #a18e6f88;border-radius:0;font:13px var(--mono);color-scheme:light}.transport-controls{display:grid;grid-template-columns:1fr 1fr;gap:18px}.transport-controls .bench-field{font-size:11px;margin-top:15px;min-width:0}.calculated-times{border-top:2px solid #8f6b43;border-bottom:1px solid #9c875d66;margin:29px 0 15px}.calculated-times>div{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:16px 0;border-bottom:1px dashed #a18e6f66}.calculated-times>div:last-child{border:0}.calculated-times span{font:9px/1.7 var(--mono);color:#8d6c46;max-width:60%}.calculated-times b{font:24px var(--serif);font-weight:400;color:#7b3128;text-align:right}.calculated-times>div:first-child b{font:15px var(--mono);color:#7a6041}.clock-settings{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:28px 0 35px}.clock-setting{display:block;padding:17px;background:#d8c9a9;border:1px solid #a18e6f55;min-width:0}.clock-setting>span{font:10px var(--mono);color:#735a39;display:block}.clock-setting>b{display:block;font:30px var(--serif);font-weight:400;margin:12px 0 5px;color:#6c432c}.clock-setting>small{font:8px var(--mono);color:#957748;display:block}.clock-setting select{font-size:11px;padding:9px 7px;margin-top:17px}.ledger-scale{display:flex;justify-content:space-between;font:9px var(--mono);color:#8e7553;margin:0 155px 10px 190px}.ledger-row{display:grid;grid-template-columns:175px minmax(0,1fr) 140px;gap:15px;align-items:center;padding:17px 0;border-top:1px solid #a18e6f66}.ledger-row>div:first-child>b{font:15px var(--serif);font-weight:400;display:block}.ledger-row small{font:8px/1.7 var(--mono);color:#9b815d;display:block;margin-top:3px}.ledger-row>div:first-child>span{font:11px var(--mono);color:#76502e;display:block;margin-top:6px}.ledger-row select{font-size:11px;padding:9px 7px;margin:0}.ledger-track{position:relative;height:42px;background:repeating-linear-gradient(90deg,transparent 0,transparent calc(20% - 1px),#a18e6f4a calc(20% - 1px),#a18e6f4a 20%);border-bottom:1px solid #a18e6f88}.visit-window{position:absolute;display:block;height:100%;top:0;background:#a43c2d25;border-left:1px solid #9c382c66;border-right:1px solid #9c382c66}.alibi-window{position:absolute;display:block;height:5px;top:18px;background:#4f5947;border-radius:0;box-shadow:0 1px 0 #fff4}.wiring-plate{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;padding:25px 15px;background:#ddcfaf;border:1px solid #aa9168;margin:25px 0}.wiring-plate>div{border:1px solid #a58b61;padding:17px;text-align:center;flex:1;min-width:110px}.wiring-plate b{display:block;font:15px var(--serif);color:#735334}.wiring-plate span{display:block;font:10px/1.7 var(--mono);color:#92744f;margin-top:6px}.wiring-plate>strong{font-size:25px;color:#8d5535}.wiring-plate p{width:100%;margin:0;text-align:center;font:12px var(--mono);color:#8b2f27}.document th{padding:10px 8px;text-align:left;color:#8b6c44;font:10px var(--mono);border-bottom:1px solid #a18e6f88}.document table td:first-child{width:auto}.document .trace{margin:20px 0}.field input[type=time]{max-width:180px;font-size:20px}.document .trace-title{font-size:10px}.document .trace-times{font-size:11px}.document .reel-samples{margin-top:20px}.context .calculated-times b{font-size:22px}html[lang=zh-Hans] .opening h1 em{font-size:1.04em;line-height:1.25}html[lang=zh-Hans] .bench-field{font-size:12px}html[lang=zh-Hans] .ledger-row>div:first-child>b{font-size:14px}
@media(max-width:900px){.clock-settings{grid-template-columns:repeat(2,1fr)}.ledger-row{grid-template-columns:150px minmax(0,1fr) 125px;gap:12px}.ledger-scale{margin-left:162px;margin-right:137px}}
@media(max-width:520px){.opening h1{font-size:65px}.opening h1 em{font-size:1.4em}.opening-content{padding-top:40px}.opening-line{font-size:19px}.tape-machine{padding:14px 15px}.reel-wheel{width:75px;height:75px}.trace{padding:11px 10px}.trace-title{font-size:8px}.trace-times{font-size:9px}.transport-controls{gap:12px}.transport-controls .bench-field{font-size:10px}.calculated-times span{font-size:8px}.calculated-times b{font-size:23px}.clock-settings{gap:12px}.clock-setting{padding:14px 11px}.clock-setting>b{font-size:28px}.clock-setting select{font-size:10px;padding:9px 5px}.clock-setting>span{font-size:9px}.clock-setting>small{font-size:7px}.ledger-row{grid-template-columns:1fr 120px;gap:10px}.ledger-row>label{grid-column:2;grid-row:1}.ledger-track{grid-column:1/-1;grid-row:2;height:32px}.alibi-window{top:13px}.ledger-scale{margin:0 0 12px;font-size:8px}.ledger-row>div:first-child>b{font-size:16px}.ledger-row small{font-size:9px}.document th{font-size:9px;padding:9px 5px}.document td{font-size:11px}.document .trace-title{font-size:9px}.document .trace-times{font-size:9px}.wiring-plate{gap:9px;padding:15px 9px}.wiring-plate>div{padding:13px 8px;min-width:90px}.wiring-plate b{font-size:14px}.wiring-plate span{font-size:8px}.wiring-plate p{font-size:10px;line-height:1.8}html[lang=zh-Hans] .opening h1{font-size:62px}html[lang=zh-Hans] .opening h1 em{font-size:1.05em}}
/* Keep language names readable on narrow screens. */
.language{white-space:nowrap;min-width:42px;flex-shrink:0}
@media(max-width:520px){.top-tools{gap:5px}.language{padding:8px 7px}.brand{gap:8px}}