:root {
      --paper:#f1efe8;
      --ink:#131716;
      --muted:#686d68;
      --line:#c8c8bf;
      --panel:#faf9f4;
      --accent:#df654c;
      --accent-soft:#f2d8d0;
      --wash:#e9e6de;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif}
    button,textarea,input{font:inherit}
    button{color:inherit}
    a{color:inherit;text-decoration:none}
    .mono{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
    nav{position:sticky;z-index:20;top:0;display:flex;align-items:center;justify-content:space-between;min-height:68px;padding:0 4vw;border-bottom:1px solid rgba(19,23,22,.17);background:rgba(241,239,232,.92);backdrop-filter:blur(18px)}
    .brand{font-family:"Songti SC","STSong",Georgia,serif;font-size:18px;font-weight:600;letter-spacing:-.02em}
    .nav-jump{padding:8px 0;border-bottom:1px solid var(--ink);font-size:13px;font-weight:700}
    .hero{display:flex;align-items:center;min-height:600px;padding:92px 4vw 104px;border-bottom:1px solid var(--line)}
    .hero-copy{width:min(1120px,100%)}
    .kicker{margin:0 0 18px;color:#555b56;font-size:12px;letter-spacing:.08em}
    h1{max-width:1080px;margin:0;font-family:"Songti SC","STSong",Georgia,serif;font-size:clamp(64px,8.2vw,126px);font-weight:600;line-height:.98;letter-spacing:-.07em;text-wrap:balance}
    h1 em{display:block;color:var(--accent);font-style:normal}
    .intro{max-width:760px;margin:34px 0;color:#4f5550;font-size:18px;line-height:1.85;text-wrap:pretty}
    .jump{display:inline-flex;align-items:center;gap:16px;padding:14px 0;border-bottom:1px solid var(--ink);font-size:15px;font-weight:800}
    .jump b{font-size:18px;font-weight:400}
    main section{padding:88px 4vw 105px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:40px;max-width:1500px;margin:0 auto 38px}
    .section-head h2{margin:0;font:600 clamp(38px,4.2vw,62px)/1.04 "Songti SC","STSong",Georgia,serif;letter-spacing:-.055em}
    .section-head .kicker{margin-bottom:10px}
    .section-head>p{max-width:430px;margin:0 0 5px;color:var(--muted);font-size:13px;line-height:1.7}
    .lab-grid{display:grid;grid-template-columns:290px minmax(400px,1fr) 350px;grid-template-areas:"corpus brain controls" "corpus speech speech";max-width:1500px;margin:auto;border-top:1px solid var(--ink);border-left:1px solid var(--ink);box-shadow:14px 16px 0 #d9d7ce}
    .panel{min-width:0;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);background:var(--panel)}
    .corpus{grid-area:corpus;padding:22px}.brain{grid-area:brain;padding:22px;background:var(--wash);color:var(--ink)}.controls{grid-area:controls;padding:22px}.speech{grid-area:speech;position:relative;min-height:218px;padding:25px 30px;background:var(--accent-soft);overflow:hidden}
    .panel-head{display:flex;align-items:center;gap:11px;margin-bottom:21px}
    .num{flex:none;min-width:30px;padding-bottom:3px;border-bottom:1px solid currentColor;font-size:9px;text-align:left}
    .panel-head div{display:flex;flex-direction:column;gap:3px}.panel-head b{font-size:13px}.panel-head small{color:#6d726d;font-size:9px}.brain .panel-head small{color:#6d726d}
    .preset-tabs{display:grid;grid-template-columns:repeat(3,1fr);margin-bottom:9px;border:1px solid #bfc0b8;border-radius:6px;overflow:hidden}
    .preset-tabs button{padding:8px 2px;border:0;border-right:1px solid #bfc0b8;background:transparent;color:#6b706b;cursor:pointer;font-size:10px}.preset-tabs button:last-child{border-right:0}.preset-tabs button.active{background:var(--ink);color:#fff}
    textarea{width:100%;min-height:185px;padding:14px;resize:vertical;border:1px solid #aeb1aa;border-radius:7px;outline:0;background:#eeede7;font:11px/1.75 "SFMono-Regular",Consolas,"PingFang SC",monospace}textarea:focus{border-color:var(--ink);box-shadow:0 0 0 2px rgba(19,23,22,.09)}
    .load{display:flex;align-items:center;justify-content:space-between;width:100%;margin-top:9px;padding:11px 12px;border:1px solid var(--ink);border-radius:3px;background:var(--ink);color:#fff;cursor:pointer;font-size:11px;font-weight:800}
    .tokens{display:flex;flex-wrap:wrap;gap:5px;margin-top:17px}.tokens span{display:grid;place-items:center;width:24px;height:24px;border:1px solid #b9bab3;border-radius:3px;background:#fff;font:11px "Songti SC",serif}.micro{margin:10px 0 0;color:#878b85;font-size:9px;line-height:1.5}
    .matrix-shell{position:relative;margin:0 0 22px 18px;padding:21px 5px 2px 23px}.axis{position:absolute;color:#7f8782;font-size:8px;letter-spacing:.06em}.axis.top{left:56px;top:0}.axis.side{left:0;top:50%;writing-mode:vertical-rl;transform:translateY(-50%)}
    .matrix{display:grid;gap:5px;align-items:center}.matrix .label{display:grid;place-items:center;min-width:0;height:24px;border:0;border-radius:2px;background:transparent;color:#666c67;font-size:9px}.matrix button.label{cursor:pointer}.matrix button.label:hover,.matrix button.label.selected{background:var(--ink);color:#fff}
    .cell{aspect-ratio:1.08;min-height:23px;border:0;border-radius:2px;cursor:crosshair;transition:transform .13s ease}.cell:hover{transform:scale(1.08);outline:1px solid var(--ink)}
    .prediction{display:grid;grid-template-columns:60px 22px 1fr;align-items:center;gap:7px;padding:16px;border:1px solid var(--line);border-radius:3px;background:var(--panel)}.current{text-align:center}.current small{display:block;margin-bottom:6px;color:#6b706b;font-size:8px}.current strong{display:grid;place-items:center;width:45px;height:45px;border-radius:3px;background:var(--accent);color:#fff;font:21px "Songti SC",serif}.arrow{color:#69716c}
    .bars{display:flex;flex-direction:column;gap:6px}.bar{display:grid;grid-template-columns:17px 1fr 34px;align-items:center;gap:6px;font-size:8px}.bar>b{font-size:10px}.bar>div{height:6px;border-radius:2px;background:#dedbd3;overflow:hidden}.bar i{display:block;height:100%;border-radius:inherit;background:var(--accent);transition:width .2s ease}.bar span{color:#6c716c;text-align:right}
    .metrics{display:grid;grid-template-columns:repeat(3,1fr);padding-bottom:17px;border-bottom:1px solid #cecec6}.metric{padding-right:7px;border-right:1px solid #cecec6}.metric:not(:first-child){padding-left:11px}.metric:last-child{border:0}.metric small{display:block;margin-bottom:6px;color:#7a7f79;font-size:8px}.metric strong{font:15px "SFMono-Regular",Consolas,monospace}.metric strong.accent{color:var(--accent)}
    .chart-box{position:relative;margin-top:18px}.chart-title{display:flex;justify-content:space-between;color:#747a74;font-size:8px}.chart-title b{color:var(--ink);font-size:11px}.chart{display:block;width:100%;height:125px;margin-top:3px}.chart line{stroke:#d6d5cd;stroke-dasharray:3 4}.chart .area{fill:rgba(223,101,76,.11)}.chart .curve{fill:none;stroke:var(--accent);stroke-width:3;stroke-linejoin:round;stroke-linecap:round;vector-effect:non-scaling-stroke}
    .actions{display:grid;grid-template-columns:.75fr 1.22fr .92fr 36px;gap:6px;margin-top:6px}.actions button{min-height:39px;border-radius:3px;cursor:pointer;font-size:10px;font-weight:800}.step{border:1px solid var(--ink);background:transparent}.run{border:1px solid var(--ink);background:var(--ink);color:#fff}.run span{margin-right:5px}.run.running{background:var(--accent);color:var(--ink)}.run.running span{color:var(--ink)}.fast{border:1px solid var(--ink);background:transparent;color:var(--ink)}.reset{border:1px solid #bfc0b8;background:transparent;font-size:17px!important}
    .temperature{display:block;margin-top:17px;padding-top:15px;border-top:1px solid #cecec6}.temperature>span{display:flex;justify-content:space-between}.temperature b{font-size:9px}.temperature small{color:#777c76;font-size:8px}.temperature input{width:100%;margin:11px 0 4px;accent-color:var(--accent)}.ends i{color:#737873;font-size:8px;font-style:normal}
    .speech-meta{position:relative;z-index:1;display:flex;align-items:center;gap:11px;font-size:10px;font-weight:800}
    blockquote{position:relative;z-index:1;margin:18px 0 16px;font:600 clamp(31px,4vw,56px)/1.15 "Songti SC","STSong",Georgia,serif;letter-spacing:-.05em}.speech-foot{position:relative;z-index:1;display:flex;align-items:center;justify-content:flex-end;font-size:8px}.speech-foot button{padding:8px 0;border:0;border-bottom:1px solid var(--ink);background:transparent;cursor:pointer;font-size:9px}.speech-foot button:hover{color:var(--accent)}
    .explain{background:var(--ink);color:#fff}.explain .kicker,.explain .section-head>p{color:#aeb4b0}.flow{display:grid;grid-template-columns:repeat(4,1fr);max-width:1500px;margin:auto;border-top:1px solid #535956;border-left:1px solid #535956}.flow article{min-height:265px;padding:23px;border-right:1px solid #535956;border-bottom:1px solid #535956}.flow article>span{display:block;width:auto;height:auto;margin-bottom:43px;border:0;color:#ef9b87;font-size:11px}.flow b{display:block;font:22px "Songti SC",serif}.flow p{min-height:60px;color:#c3c8c4;font-size:11px;line-height:1.7}.flow .example{display:block;color:#ef9b87;font-size:9px}.note{display:grid;grid-template-columns:150px 1fr;gap:24px;max-width:1500px;margin:30px auto 0;padding:24px 0;border-top:1px solid #535956}.note>span{color:#ef9b87;font-size:9px;letter-spacing:.08em}.note p{max-width:980px;margin:0;color:#c3c8c4;font-size:11px;line-height:1.75}.note b{color:#fff}

    /* Readability pass: comfortable defaults for laptop and high-DPI screens. */
    nav{min-height:76px}
    .brand{font-size:19px}
    .hero{min-height:650px;padding-top:104px;padding-bottom:116px}.kicker{font-size:13px;line-height:1.6}.intro{max-width:760px;font-size:18px;line-height:1.85}.jump{padding:14px 0;font-size:15px}
    main section{padding-top:102px;padding-bottom:118px}.section-head{margin-bottom:46px}.section-head>p{max-width:500px;font-size:16px;line-height:1.8}
    .lab-grid{grid-template-columns:340px minmax(460px,1fr) 410px;max-width:1600px}.corpus,.brain,.controls{padding:28px}.speech{min-height:250px;padding:30px 36px}
    .panel-head{gap:14px;margin-bottom:27px}.num{min-width:32px;width:auto;height:auto;font-size:12px}.panel-head b{font-size:17px}.panel-head small,.brain .panel-head small{font-size:13px;line-height:1.45}
    .preset-tabs{margin-bottom:12px}.preset-tabs button{min-height:42px;font-size:14px}.corpus textarea{min-height:220px;padding:17px;font-size:15px;line-height:1.8}.load{min-height:46px;padding:13px 15px;font-size:14px}.tokens{gap:7px;margin-top:22px}.tokens span{width:31px;height:31px;font-size:15px}.micro{margin-top:14px;font-size:13px;line-height:1.65}
    .matrix-shell{margin-bottom:28px;padding-top:27px}.axis{font-size:11px}.matrix{gap:7px}.matrix .label{height:30px;font-size:13px}.cell{min-height:28px}.prediction{grid-template-columns:72px 28px 1fr;gap:9px;padding:20px}.current small{font-size:12px}.current strong{width:55px;height:55px;font-size:26px}.bars{gap:8px}.bar{grid-template-columns:23px 1fr 45px;gap:8px;font-size:12px}.bar>b{font-size:15px}.bar>div{height:8px}
    .metrics{padding-bottom:22px}.metric small{margin-bottom:8px;font-size:12px}.metric strong{font-size:20px}.chart-box{margin-top:23px}.chart-title{font-size:12px}.chart-title b{font-size:15px}.chart{height:150px}.actions{grid-template-columns:.78fr 1.2fr .95fr 44px;gap:8px;margin-top:10px}.actions button{min-height:48px;font-size:14px}.reset{font-size:20px!important}.temperature{margin-top:22px;padding-top:20px}.temperature b{font-size:14px}.temperature small{font-size:12px}.temperature input{margin:15px 0 7px}.ends i{font-size:11px}
    .speech-meta{gap:14px;font-size:14px}.speech blockquote{margin:23px 0 20px}.speech-foot{font-size:12px}.speech-foot button{padding:10px 16px;font-size:13px}
    .flow{max-width:1600px}.flow article{min-height:300px;padding:30px}.flow article>span{width:auto;height:auto;margin-bottom:48px;font-size:13px}.flow b{font-size:28px}.flow p{min-height:78px;font-size:16px;line-height:1.8}.flow .example{font-size:13px}.note{max-width:1600px;grid-template-columns:150px 1fr;padding:30px 0}.note>span{font-size:12px}.note p{font-size:15px;line-height:1.85}
    @media(max-width:1380px){.lab-grid{grid-template-columns:310px minmax(420px,1fr) 380px}.corpus,.brain,.controls{padding:24px}}
    @media(max-width:1240px){.lab-grid{grid-template-columns:310px 1fr;grid-template-areas:"corpus brain" "controls speech"}.controls{min-height:540px}.flow{grid-template-columns:repeat(2,1fr)}}
    h1,h2,h3{text-wrap:balance}p{text-wrap:pretty}
    @media(max-width:820px){nav{min-height:70px;padding:0 18px}.brand{font-size:17px}.hero{min-height:auto;padding:78px 18px 88px}h1{font-size:clamp(53px,16vw,76px)}.intro{font-size:17px;line-height:1.8}main section{padding:76px 18px 90px}.section-head{display:block}.section-head h2{font-size:42px}.section-head>p{margin-top:18px;font-size:16px}.lab-grid{display:block;box-shadow:8px 9px 0 #d9d7ce}.corpus,.brain,.controls{padding:21px}.controls{min-height:0}.speech{min-height:230px;padding:25px 22px}.speech blockquote{font-size:38px}.flow{grid-template-columns:1fr}.flow article{min-height:265px;padding:24px}.flow article>span{margin-bottom:34px}.flow p{min-height:0}.note{grid-template-columns:1fr;gap:12px}.actions{grid-template-columns:1fr 1.2fr 1fr 42px}.actions button{font-size:13px}.matrix-shell{margin-left:0;padding-left:18px}.matrix{gap:5px}.matrix .label{font-size:12px}.cell{min-height:21px}.prediction{grid-template-columns:62px 20px 1fr;padding:16px}.bar{grid-template-columns:20px 1fr 42px}.micro{font-size:13px}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}