:root{color-scheme:light;--ink:#142937;--muted:#617581;--navy:#102330;--navy-2:#163544;--teal:#168f86;--teal-soft:#def3ed;--amber:#a76a1f;--amber-soft:#fff0d6;--blue:#426f96;--blue-soft:#e9f2fa;--red:#ad5146;--red-soft:#fbe8e5;--paper:#fbfaf6;--white:#fff;--line:#dce5e8;--shadow:0 18px 45px rgba(17,40,53,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.6}button,input{font:inherit}a{color:inherit}button{cursor:pointer}.skip-link{position:absolute;left:12px;top:-80px;padding:8px 12px;background:#fff;z-index:30}.skip-link:focus{top:12px}:focus-visible{outline:3px solid #edb44b;outline-offset:3px}.wrap{width:min(1230px,calc(100% - 72px));margin-inline:auto}
.topbar{height:76px;background:var(--navy);color:#fff;display:flex;align-items:center;gap:32px;padding:0 max(36px,calc((100vw - 1230px)/2));border-bottom:1px solid rgba(255,255,255,.12)}.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}.brand-mark{width:34px;height:34px;border:2px solid #54c7b5;display:grid;place-items:center;color:#8be4d6;font-weight:900;font-size:23px;line-height:1;position:relative;border-radius:8px}.brand-dot{position:absolute;font-size:7px;color:#efb75a;right:3px;bottom:4px}.brand strong{display:block;font-size:15px;letter-spacing:.02em}.brand small{display:block;font-size:10px;color:#9cb9c3;letter-spacing:.14em}.topbar nav{display:flex;gap:27px;margin-left:auto}.topbar nav a{text-decoration:none;color:#c8d8dd;font-size:13px}.topbar nav a:hover{color:#fff}.top-date{border-left:1px solid rgba(255,255,255,.2);padding-left:23px;color:#b1c6ca;font-size:12px;white-space:nowrap}
.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(350px,.8fr);gap:60px;padding-top:78px;padding-bottom:67px;align-items:center}.eyebrow,.kicker{text-transform:uppercase;letter-spacing:.16em;font-size:11px;font-weight:800;color:var(--teal)}.eyebrow{display:flex;align-items:center;gap:9px}.live-dot{width:8px;height:8px;border-radius:50%;background:#47ad98;box-shadow:0 0 0 4px #dff3ed}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(42px,5.3vw,70px);letter-spacing:-.055em;line-height:1.12;margin:17px 0 26px;font-weight:850}h1 span{display:block;color:var(--red)}.lead{font-size:17px;line-height:1.9;color:#4e6570;max-width:650px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}.button{text-decoration:none;border-radius:9px;padding:12px 19px;display:inline-flex;align-items:center;gap:21px;font-weight:700;font-size:13px;border:1px solid var(--line);transition:transform .18s,background .18s}.button:hover{transform:translateY(-2px)}.button.primary{background:var(--navy);color:#fff;border-color:var(--navy)}.button.primary:hover{background:#1e4755}.button.ghost{background:#fff;color:var(--ink)}
.hero-panel{background:#fff;border:1px solid #dce6e7;border-radius:16px;box-shadow:var(--shadow);padding:28px 30px 27px}.panel-heading{display:flex;align-items:center;justify-content:space-between;font-weight:800;font-size:15px}.pill{display:inline-flex;align-items:center;border-radius:999px;padding:5px 10px;font-size:11px;font-weight:800}.pill.warning{background:var(--red-soft);color:var(--red)}.stack-meter{height:16px;border-radius:999px;display:flex;overflow:hidden;margin:26px 0 17px;background:#eef0f0;gap:3px}.stack-meter span{height:100%}.meter-formula{width:16.6667%;background:#39b9a8}.meter-partial{width:33.3333%;background:#e8af5d}.meter-interface{width:16.6667%;background:#8eb5d0}.meter-missing{width:33.3333%;background:#db8075}.meter-legend{display:grid;grid-template-columns:1fr 1fr;gap:10px 8px;font-size:11px;color:#5d707a}.meter-legend span{display:flex;align-items:center;gap:7px}.swatch{width:9px;height:9px;border-radius:2px;display:inline-block}.swatch.formula{background:#39b9a8}.swatch.partial{background:#e8af5d}.swatch.interface{background:#8eb5d0}.swatch.missing{background:#db8075}.panel-note{font-size:11px;line-height:1.6;color:#7c8c93;margin:20px 0 17px}.panel-rule{height:1px;background:var(--line)}.fact-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding-top:22px}.fact-pair div+div{border-left:1px solid var(--line);padding-left:22px}.fact-pair strong{display:block;font-size:29px;line-height:1.05;letter-spacing:-.04em;color:#1b4e58}.fact-pair span{display:block;font-size:11px;color:#6a7f87;margin-top:7px}
.summary-strip{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);background:#fff;border-radius:12px;box-shadow:0 8px 27px rgba(27,54,64,.035)}.summary-strip article{display:flex;align-items:flex-start;gap:16px;padding:23px 22px;min-width:0}.summary-strip article+article{border-left:1px solid var(--line)}.summary-index{font-size:11px;font-weight:900;color:#79a39c;padding-top:4px}.summary-strip strong{font-size:13px}.summary-strip p{font-size:12px;line-height:1.6;color:#73848d;margin:6px 0 0}.state-tag{margin-left:auto;white-space:nowrap;padding:4px 9px;border-radius:4px;font-size:10px;font-weight:900}.state-tag.formula{color:#0d7769;background:var(--teal-soft)}.state-tag.partial{color:var(--amber);background:var(--amber-soft)}.state-tag.interface{color:var(--blue);background:var(--blue-soft)}.state-tag.missing{color:var(--red);background:var(--red-soft)}
.section{padding-top:96px;padding-bottom:98px}.section-tint{background:#f0f5f4;border-block:1px solid #e1eae9}.section-head{display:flex;align-items:end;justify-content:space-between;gap:36px;margin-bottom:30px}.section-head h2,.probe-grid h2,.evidence-grid h2{font-size:clamp(25px,2.7vw,36px);line-height:1.2;letter-spacing:-.045em;margin:11px 0 0}.section-head>p{max-width:380px;font-size:12px;color:var(--muted);margin:0 0 4px}.flow{display:flex;align-items:center;gap:8px}.flow button{min-width:0;flex:1;background:#fff;border:1px solid var(--line);border-radius:11px;padding:21px 14px 17px;text-align:left;display:flex;flex-direction:column;gap:3px;min-height:130px;box-shadow:0 7px 20px rgba(12,42,50,.04);transition:border-color .2s,transform .2s,box-shadow .2s}.flow button:hover,.flow button.active{border-color:#60b8aa;box-shadow:0 10px 24px rgba(10,97,86,.09);transform:translateY(-2px)}.flow-icon{font-size:11px;color:var(--teal);font-weight:900;margin-bottom:11px}.flow strong{font-size:13px}.flow small{color:var(--muted);font-size:10px}.flow-arrow{font-size:19px;color:#93a9ad}.flow-detail{margin-top:18px;border-left:4px solid #52bba9;background:#e7f3ef;border-radius:0 9px 9px 0;padding:15px 19px;display:flex;align-items:baseline;gap:20px}.flow-detail strong{white-space:nowrap;font-size:13px}.flow-detail p{font-size:12px;color:#48676b;margin:0;line-height:1.6}
.filter-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}.filter{border:1px solid #d0dedf;background:#fff;color:#526a72;border-radius:999px;padding:8px 15px;font-size:12px;font-weight:700}.filter.active{background:var(--navy);color:#fff;border-color:var(--navy)}.filter em{font-style:normal;opacity:.65;margin-left:3px}.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.module-card{background:#fff;border:1px solid #dce6e6;border-radius:11px;padding:20px 20px 17px;box-shadow:0 8px 21px rgba(12,45,49,.025)}.module-card[hidden]{display:none}.module-top{display:flex;align-items:start;justify-content:space-between;gap:7px}.module-number{font-size:11px;color:#94a6ad;font-weight:850}.module-card h3{font-size:16px;line-height:1.35;margin:14px 0 9px}.module-card>p{font-size:12px;color:#5b7077;line-height:1.7;min-height:41px;margin:0 0 16px}.module-toggle{border:0;background:transparent;padding:0;color:#1d7e77;font-size:12px;font-weight:800}.module-toggle:hover{text-decoration:underline}.module-details{border-top:1px solid var(--line);padding-top:13px;margin-top:15px;font-size:11px;color:#627782;line-height:1.7}.module-details[hidden]{display:none}.module-details strong{color:var(--ink)}.module-details code{background:#edf3f2;border-radius:4px;padding:1px 4px;font-size:10px}.caption{font-size:11px;color:#708188;margin-top:17px;margin-bottom:0}
.experiment-tabs{display:flex;gap:5px;border-bottom:1px solid #cbd8da;margin-bottom:0}.experiment-tabs button{border:0;background:transparent;padding:13px 20px;color:#687d84;font-size:13px;font-weight:700;border-bottom:3px solid transparent;margin-bottom:-1px}.experiment-tabs button[aria-selected=true]{color:#126e67;border-color:#21a899}.experiment-panel{padding:31px;background:#fff;border:1px solid var(--line);border-top:0;border-radius:0 0 12px 12px;box-shadow:var(--shadow);min-height:295px}.experiment-intro{display:flex;gap:30px;justify-content:space-between;align-items:start}.experiment-intro h3{font-size:20px;margin:0 0 8px}.experiment-intro p{font-size:12px;color:#657980;max-width:650px;margin:0}.experiment-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:25px}.experiment-facts article{background:#f5f8f7;border:1px solid #e2eae9;border-radius:9px;padding:16px}.experiment-facts strong{display:block;font-size:11px;margin-bottom:7px}.experiment-facts p{font-size:11px;color:#5d7177;line-height:1.65;margin:0}.experiment-bottom{margin-top:24px;border-top:1px solid var(--line);padding-top:18px;display:flex;gap:24px;align-items:start}.experiment-bottom strong{font-size:12px;min-width:90px}.experiment-bottom p{font-size:12px;color:#566e75;margin:0}
.glossary-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.glossary-grid article{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px;min-height:156px}.glossary-grid article span{font-size:10px;font-weight:800;letter-spacing:.12em;color:var(--teal)}.glossary-grid article h3{font-size:15px;margin:10px 0 7px}.glossary-grid article p{font-size:11px;color:#657b82;line-height:1.7;margin:0}
.forest-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:center}.forest-copy h2{font-size:clamp(25px,2.7vw,36px);letter-spacing:-.045em;margin:12px 0 16px}.forest-copy>p{font-size:13px;color:#657980;line-height:1.8}.seed-switch{display:flex;gap:7px;margin:25px 0}.seed-switch button{border:1px solid #bbd4cf;background:#fff;border-radius:6px;padding:8px 14px;color:#49706c;font-size:11px;font-weight:800}.seed-switch button.active{background:#176c64;color:#fff;border-color:#176c64}.forest-frame{border:1px solid #d2dedb;background:#fff;border-radius:13px;padding:16px;box-shadow:var(--shadow)}.forest-frame-top{display:flex;justify-content:space-between;gap:20px;margin:0 0 12px;font-size:11px}.forest-frame-top span{color:#789088}.forest-frame svg{width:100%;display:block;border-radius:6px;background:#cbd9c0;aspect-ratio:3/2}.forest-legend{display:flex;flex-wrap:wrap;gap:13px;padding-top:12px;font-size:10px;color:#627a77}.forest-legend span{display:flex;align-items:center;gap:6px}.forest-legend i{width:10px;height:10px;display:inline-block;border-radius:50%}.forest-tree{background:#527e4c}.forest-rock{background:#6d7a75}.forest-bump{background:#bb9c7d;border-radius:2px!important}.forest-start{background:#05a58c}.forest-goal{background:#d89227}.forest-frame p{font-size:10px;color:#718480;margin:11px 0 0}
.probe-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}.probe-grid>div>p{font-size:13px;color:#657980;max-width:600px;margin:17px 0 25px}.probe-switch{display:flex;gap:6px;margin-bottom:24px}.probe-switch button{border:1px solid #d1dede;background:#fff;border-radius:6px;padding:9px 13px;font-size:12px;color:#557078;font-weight:700}.probe-switch button.active{background:#1b4e56;color:#fff;border-color:#1b4e56}.slider-row{display:grid;grid-template-columns:170px 1fr 64px;gap:16px;align-items:center;margin:17px 0}.slider-row label{font-size:12px;font-weight:700}.slider-row output{font-size:12px;text-align:right;font-variant-numeric:tabular-nums;color:#28545d}.slider-row input{width:100%;accent-color:#2a9d91}.probe-result{background:var(--navy-2);color:#f4f8f8;border-radius:15px;padding:35px;text-align:center;box-shadow:var(--shadow);min-height:370px}.probe-result>small{display:block;color:#acd1d1;font-size:11px;letter-spacing:.13em}.result-orbit{height:105px;width:105px;border-radius:50%;border:1px solid #6abaaa;margin:29px auto 19px;display:grid;place-items:center;background:radial-gradient(circle,#2f716c,#1b4552);box-shadow:0 0 0 11px rgba(91,197,175,.08)}.result-orbit span{font-size:44px;font-weight:300}.probe-result.unsafe .result-orbit{border-color:#e79c88;background:radial-gradient(circle,#a9544b,#653a41);box-shadow:0 0 0 11px rgba(235,128,110,.09)}.probe-result h3{font-size:18px;margin:0 0 8px}.probe-result p{font-size:12px;color:#c5d9dd;margin:0 0 25px}.result-disclaimer{font-size:11px;color:#a6bdc3;border-top:1px solid rgba(255,255,255,.17);padding-top:18px;line-height:1.7}
.lab-layout{display:grid;grid-template-columns:1.45fr .65fr;gap:28px}.lab-list{display:grid;gap:9px}.lab-item{display:flex;gap:14px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:9px;padding:16px 17px}.lab-item input{margin:4px 0 0;width:17px;height:17px;accent-color:#138c80;flex:none}.lab-item strong{display:block;font-size:12px}.lab-item small{display:block;color:#667b82;line-height:1.6;margin-top:3px;font-size:11px}.lab-item.is-done{background:#f2f9f6}.lab-aside{border-radius:12px;padding:26px;background:#e9f2f0;align-self:start;border:1px solid #d5e5e2}.aside-label{font-size:10px;font-weight:900;letter-spacing:.15em;color:#0b8175}.lab-aside h3{font-size:18px;margin:13px 0}.lab-aside ol{padding-left:19px;margin:0 0 18px;font-size:12px;font-weight:700;line-height:2.2}.lab-aside p{font-size:11px;color:#60767b;line-height:1.7}.aside-progress{padding-top:15px;border-top:1px solid #c6dcd7;display:flex;justify-content:space-between;gap:8px;font-size:11px;font-weight:700}.aside-progress button{padding:0;border:0;background:transparent;color:#587477;text-decoration:underline;font-size:11px}.text-link{display:inline-block;margin-top:20px;color:#136f65;font-size:12px;font-weight:800;text-decoration:none}.text-link:hover{text-decoration:underline}.command-box{margin-top:22px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:18px}.command-box summary{cursor:pointer;font-size:12px;font-weight:800}.command-box p{font-size:11px;color:#657a81;margin:12px 0}.command-box pre{background:#112b37;color:#d4efeb;border-radius:7px;padding:17px;overflow:auto;font-size:12px;line-height:1.75}.command-box code{font-family:Consolas,Monaco,monospace}
.section-dark{background:#102330;color:#fff}.section-dark .kicker{color:#77cfbf}.evidence-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:34px;align-items:center}.evidence-grid h2{color:#fff}.evidence-grid p{font-size:12px;color:#aac0c6;margin:15px 0 0}.evidence-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.evidence-cards div{border:1px solid rgba(255,255,255,.16);padding:20px;border-radius:9px;background:rgba(255,255,255,.05)}.evidence-cards strong{display:block;font-size:28px;line-height:1.1;color:#8fe2d2}.evidence-cards span{font-size:10px;color:#c1d6d8}.evidence-note{grid-column:1/-1;padding-top:19px;border-top:1px solid rgba(255,255,255,.14);color:#afc4c8;font-size:11px}.footer{padding-top:38px;padding-bottom:44px;display:flex;justify-content:space-between;gap:40px}.footer strong{font-size:13px}.footer p{font-size:11px;color:#7a8b90;margin:8px 0 0}.footer-links{display:flex;flex-wrap:wrap;gap:22px;align-items:start}.footer-links a{font-size:11px;font-weight:700;color:#2e6e72;text-decoration:none}.footer-links a:hover{text-decoration:underline}
@media(max-width:1050px){.topbar{padding-inline:28px}.topbar nav{gap:16px}.top-date{display:none}.hero{gap:25px}.module-grid{grid-template-columns:repeat(2,1fr)}.glossary-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.summary-strip{grid-template-columns:1fr 1fr}.summary-strip article:nth-child(3){grid-column:1/-1;border-left:0;border-top:1px solid var(--line)}}
@media(max-width:760px){.wrap{width:min(100% - 32px,600px)}.topbar{height:64px;padding-inline:16px}.topbar nav{gap:12px}.topbar nav a{font-size:11px}.topbar nav a:nth-child(3){display:none}.brand{gap:7px}.brand small{display:none}.hero{grid-template-columns:1fr;padding-top:48px;padding-bottom:43px}.hero-panel{padding:24px}.lead{font-size:14px}.summary-strip{grid-template-columns:1fr}.summary-strip article+article,.summary-strip article:nth-child(3){grid-column:auto;border-left:0;border-top:1px solid var(--line)}.section{padding-block:65px}.section-head{display:block}.section-head>p{margin-top:12px}.flow{display:grid;grid-template-columns:1fr 1fr}.flow-arrow{display:none}.flow button{min-height:95px;padding:15px}.flow-detail{display:block}.flow-detail p{margin-top:5px}.module-grid,.glossary-grid{grid-template-columns:1fr}.module-card>p{min-height:0}.experiment-tabs{overflow-x:auto}.experiment-tabs button{white-space:nowrap;padding:12px 13px;font-size:11px}.experiment-panel{padding:20px}.experiment-intro{display:block}.experiment-intro .state-tag{display:inline-block;margin:15px 0 0}.experiment-facts{grid-template-columns:1fr}.experiment-bottom{display:block}.experiment-bottom p{margin-top:6px}.forest-grid,.probe-grid,.lab-layout,.evidence-grid{grid-template-columns:1fr;gap:27px}.probe-result{min-height:0}.slider-row{grid-template-columns:120px 1fr 50px;gap:9px}.evidence-cards strong{font-size:21px}.evidence-cards div{padding:12px}.evidence-cards span{line-height:1.3;display:block;margin-top:5px}.footer{display:block}.footer-links{margin-top:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}