@charset "UTF-8";
@font-face{font-family:"Lemqo Sans SC";font-style:normal;font-weight:400 600;font-display:swap;src:url("./fonts/noto-sans-sc.woff2") format("woff2")}
@font-face{font-family:"Lemqo Serif SC";font-style:normal;font-weight:400 600;font-display:swap;src:url("./fonts/noto-serif-sc.woff2") format("woff2")}
:root{--paper:#f7f7f0;--paper-deep:#eeeee5;--ink:#252d29;--muted:#6c7166;--line:#d9dbcf;--accent:#a6553d;--accent-soft:#f0e4d9;--green:#527661;--serif:Georgia,"Times New Roman","Lemqo Serif SC","Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;--sans:"Lemqo Sans SC","Segoe UI","Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;--mono:"Cascadia Code","SFMono-Regular",Consolas,monospace}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button{color:inherit}button:not(:disabled),summary{cursor:pointer}button:disabled{cursor:wait}button{border:0}svg{display:block}p,h1,h2,h3,h4{margin:0}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:5px}::selection{background:#e2c8b3;color:var(--ink)}[hidden]{display:none!important}.wrap{max-width:1304px;padding:0 48px;margin:0 auto}.mono{font-family:var(--mono);font-size:13px;letter-spacing:.08em}.muted{color:var(--muted)}.math{font-family:var(--serif)}.tiny-square{display:inline-block;width:6px;height:6px;flex-shrink:0;background:var(--accent)}.status-dot{display:inline-block;flex-shrink:0;width:6px;height:6px;border-radius:50%;background:var(--green)}.skip-link{position:fixed;z-index:100;left:24px;top:-80px;padding:12px 18px;background:var(--ink);color:var(--paper)}.skip-link:focus{top:15px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,247,240,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner{height:92px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:inline-flex;align-items:center;gap:11px;font-family:var(--serif);font-size:35px;letter-spacing:-1.8px;line-height:1}.brand-mark{width:30px;height:34px;flex-shrink:0}.brand-dot{color:var(--accent)}.desktop-nav{display:flex;gap:32px;margin-left:auto;margin-right:34px}.desktop-nav a{font-size:15px;color:#52594f;position:relative;padding:8px 0}.desktop-nav a::after{content:"";position:absolute;left:0;right:100%;height:1px;bottom:2px;background:var(--accent);transition:right .2s}.desktop-nav a:hover::after,.desktop-nav a.current::after{right:0}.header-actions{display:flex;align-items:center;gap:25px}.language-switch{display:flex;align-items:center;gap:8px;font-size:14px;color:#858b7d;white-space:nowrap}.language-switch .active{color:var(--ink);font-weight:600}.language-divider{font-weight:400;color:#afb3a5}.header-source{display:flex;align-items:center;gap:8px;padding:10px 14px;border:1px solid var(--line);border-radius:4px;font-size:14px;transition:border-color .2s,background .2s}.header-source:hover{background:var(--paper-deep);border-color:#a3aa99}.header-source svg{width:17px;height:17px}.menu-toggle{display:none;background:transparent;padding:9px}.menu-toggle span{display:block;width:21px;height:1px;background:var(--ink);margin:5px 0}.mobile-nav{padding:0 24px 20px;border-top:1px solid var(--line)}.mobile-nav a{padding:14px 0;display:flex;justify-content:space-between;border-bottom:1px solid var(--line)}.mobile-nav svg{width:18px}
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.principle-strip{background:var(--paper-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.principle-strip .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:17px;padding-bottom:17px}.principle-strip .wrap>span{display:flex;align-items:center;gap:13px;font-size:13px;letter-spacing:.035em;color:#626a59}.strip-symbol{font-family:var(--serif);font-size:23px;color:var(--accent);line-height:1}.section{padding-top:104px;padding-bottom:104px}.section-label{color:var(--accent);margin-bottom:34px}.vision-intro{display:grid;grid-template-columns:1fr 1fr;gap:100px}h2{font-size:clamp(33px,3.3vw,48px);line-height:1.3}html[lang="zh-CN"] h2{letter-spacing:-.04em}.vision-body{font-size:15px;line-height:1.9}.vision-body .lead{font-size:17px;color:var(--ink);margin-bottom:16px}.vision-body p+p{margin-top:15px}.vision-body>p:last-child{font-size:14px}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;margin-top:65px}.principle{border-top:1px solid var(--line);padding-top:25px}.principle-top{display:flex;align-items:center;justify-content:space-between;color:#8b907e;margin-bottom:21px}.principle-symbol{font-family:var(--serif);font-size:33px;color:var(--accent);line-height:1}.principle h3{font-size:17px;font-weight:500;letter-spacing:-.025em}.principle p{font-size:14px;color:var(--muted);margin-top:12px;line-height:1.9;max-width:320px}.section-intro{display:grid;grid-template-columns:1.1fr 1fr;gap:100px;align-items:end}.section-intro>p{font-size:15px;line-height:1.95;color:var(--muted);padding-bottom:7px}.system-section{background:var(--ink);color:var(--paper);position:relative;overflow:hidden}.system-section::after{content:"";position:absolute;right:-160px;top:-300px;width:670px;height:670px;border:1px solid #414d3e;border-radius:50%;pointer-events:none}.system-section .section-label{color:#b6bca6}.system-section h2 em{color:#d5b399}.system-section .section-intro>p{color:#b5beac}.pipeline{display:grid;grid-template-columns:repeat(4,1fr);gap:38px;margin-top:61px}.pipeline-step{border-top:1px solid #51604a;padding-top:24px;position:relative}.pipeline-top{display:flex;justify-content:space-between;align-items:center;color:#85977b}.pipeline-symbol{font-family:var(--serif);font-size:33px;line-height:1;color:#d5b399}.pipeline-arrow{position:absolute;right:-27px;top:24px;font-size:24px;color:#8c9b83}.pipeline-label{font-size:10px;letter-spacing:.1em;color:#b5c0a8;margin-top:26px;line-height:1.6}.pipeline-step h3{font-size:17px;font-weight:500;margin-top:7px}.pipeline-step>p:last-child{font-size:14px;line-height:1.9;color:#b5beac;margin-top:10px;max-width:230px}.system-bottom{display:flex;align-items:center;justify-content:space-between;gap:24px;border-top:1px solid #4d5a45;padding-top:24px;margin-top:48px}.system-bottom>p{display:flex;gap:10px;align-items:center;font-size:13px;color:#b5beac}.system-bottom .tiny-square{background:#d5b399}.system-bottom .text-link{color:#e8ebdc}
.proof-section{padding-bottom:90px}.proof-lab{margin-top:46px;border:1px solid #cfd2c3;border-radius:7px;overflow:hidden;background:#fafaf5;box-shadow:0 12px 28px -22px #29392955}.lab-bar{height:52px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 25px;border-bottom:1px solid var(--line)}.lab-bar>span:first-child{display:flex;align-items:center;gap:10px;font-size:14px}.lab-icon{font-family:var(--serif);font-size:21px;color:var(--accent)}.lab-local{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}.proof-tabs{display:flex;border-bottom:1px solid var(--line);background:#f0f1e8;padding-left:25px;gap:20px}.proof-tab{background:transparent;padding:16px 9px 13px;color:#7e8375;font-size:13px;display:flex;gap:18px;align-items:center;border-bottom:2px solid transparent;transition:color .2s}.proof-tab.active{color:var(--ink);border-bottom-color:var(--accent)}.proof-tab:hover{color:var(--ink)}.tab-index{font-family:var(--mono);font-size:10px;opacity:.5}.lab-body{display:grid;grid-template-columns:1.65fr 1fr;min-height:398px}.proof-workspace{padding:29px 30px 24px;min-width:0}.small-label{font-size:11px;letter-spacing:.13em;color:#828975;font-weight:500}.statement-formula{font-family:var(--serif);font-size:31px;line-height:1.6;overflow-wrap:anywhere;margin-top:5px}.statement-description{font-size:13px;line-height:1.8;color:var(--muted);margin-top:2px;min-height:20px}.proof-table-scroll{overflow-x:auto;margin-top:25px}.proof-table{border-collapse:collapse;width:100%;text-align:left}.proof-table th{padding:0 10px 9px 0;font-size:11px;font-weight:400;letter-spacing:.04em;color:#818776;border-bottom:1px solid var(--line)}.proof-table th:first-child{width:44px}.proof-table th:last-child{width:20px}.proof-table td{font-size:13px;padding:9px 10px 9px 0;border-bottom:1px solid 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.progress-section{padding-top:0}.progress-section>.section-label{border-top:1px solid var(--line);padding-top:42px}.progress-grid{display:grid;grid-template-columns:1fr 1.02fr;gap:30px;margin-top:44px}.current-progress,.next-progress{padding:32px 33px 29px;border:1px solid var(--line);border-radius:5px}.current-progress{background:#eeefe5}.progress-tag{display:flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.08em;color:#737c65;line-height:1.7}.progress-grid h3{font-family:var(--serif);font-size:24px;font-weight:400;line-height:1.4;margin-top:13px;letter-spacing:-.025em}.current-item{padding-top:24px}.current-item+.current-item{margin-top:20px;border-top:1px solid #d4d9c8;padding-top:21px}.progress-grid h4{font-size:14px;font-weight:500;line-height:1.65}.current-item p,.next-list p{font-size:13px;line-height:1.85;color:var(--muted);margin-top:6px}.current-item .text-link{margin-top:13px;font-size:12px;color:#59694d}.current-item .text-link svg{width:13px}.next-list{list-style:none;margin:23px 0 25px;padding:0}.next-list li{display:flex;gap:17px;margin-top:17px}.next-list li>span{font-size:11px;color:var(--accent);padding-top:3px}.next-progress>.text-link{font-size:13px}.next-progress>.text-link svg{width:14px}
.join-section{background:#a45139;color:#faf4e7;overflow:hidden}.join-section .section-label{color:#efd8be}.join-intro{display:grid;grid-template-columns:1.6fr 1fr;gap:40px;align-items:center}.join-intro h2{font-size:clamp(40px,4.5vw,61px);line-height:1.27}.join-intro h2 em{color:#f4d9b4}.join-intro p{font-size:15px;line-height:1.95;color:#f1d6c0;margin-top:27px}.join-actions{display:flex;align-items:center;gap:25px;margin-top:29px;flex-wrap:wrap}.join-actions .text-link{font-size:13px;color:#f1d6c0}.join-actions .button svg:first-child{width:16px;height:16px}.join-actions .button{gap:13px}.join-art{position:relative;height:260px;display:flex;align-items:center;justify-content:center;isolation:isolate}.join-orbit{position:absolute;border:1px solid #be795a;border-radius:50%;height:245px;width:190px;transform:rotate(-35deg)}.orbit-two{transform:rotate(25deg)}.orbit-three{transform:rotate(85deg)}.join-art-symbol{font-family:var(--serif);font-size:116px;color:#ecd2b0;line-height:1;padding-bottom:25px}.join-art-caption{position:absolute;bottom:15px;font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:#e8bca0}.join-roles{display:grid;grid-template-columns:repeat(3,1fr);gap:47px;border-top:1px solid #c47d5e;margin-top:53px;padding-top:26px}.join-roles article>span{font-size:11px;color:#e4b49a}.join-roles h3{font-size:16px;font-weight:500;margin-top:8px}.join-roles p{font-size:13px;line-height:1.85;color:#f0d2bb;margin-top:8px;max-width:315px}.site-footer{padding-top:43px;padding-bottom:24px}.footer-main{display:flex;justify-content:space-between;align-items:center;gap:35px;padding-bottom:33px}.footer-main .brand{font-size:28px}.footer-main .brand-mark{width:24px;height:29px}.footer-main p{font-size:12px;color:var(--muted);margin-top:14px}.footer-links{display:flex;gap:26px}.footer-links a{font-size:12px}.footer-links svg{width:12px;height:12px}.footer-bottom{display:flex;gap:24px;align-items:center;border-top:1px solid var(--line);padding-top:20px;font-size:11px;color:#838b77}.license-link{margin-left:auto}.back-top{display:flex;gap:13px;align-items:center}.back-top span{font-size:16px;color:var(--accent)}.not-found{min-height:100vh;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:28px;padding-top:50px;padding-bottom:50px}.not-found .section-label{margin-top:25px;margin-bottom:0}.not-found h1{max-width:800px}.not-found>p{color:var(--muted)}.not-found .text-link{margin-top:5px}
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h3{margin:0;font-size:16px}.join-roles p{grid-column:2;margin:0;max-width:none;font-size:13px}.site-footer{padding-top:31px;padding-bottom:23px}.footer-main{align-items:flex-start;flex-direction:column;gap:24px;padding-bottom:25px}.footer-main p{font-size:12px;margin-top:10px}.footer-links{gap:24px;flex-wrap:wrap}.footer-links a{font-size:12px}.footer-links svg{width:11px}.footer-bottom{flex-wrap:wrap;gap:13px 20px;padding-top:18px;font-size:10px}.license-link{margin-left:0}.back-top{margin-left:auto;gap:9px}.not-found{gap:22px}.not-found h1{font-size:38px}}
@media(max-width:370px){.wrap{padding-left:20px;padding-right:20px}.header-actions{gap:12px}html[lang="zh-CN"] h1{font-size:34px}h1{font-size:38px}.hero-actions{gap:18px}.hero-actions .text-link{font-size:12px}.principle{grid-template-columns:1fr;gap:8px}.principle-top{margin-bottom:4px}.lab-local{font-size:9px}.proof-tab{font-size:11px}.proof-controls{gap:14px}.tamper-control{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.button:hover{transform:none}}
.graph-node .node-label,.graph-final .node-label{font-size:14px}
.proof-table td:nth-child(3),.proof-table th:nth-child(3){min-width:160px;white-space:nowrap}
@media(max-width:720px){html[lang="en"] h1{font-size:clamp(34px,8.8vw,54px)}}
@media(max-width:370px){.proof-tabs{padding-left:8px;gap:8px}.proof-tab{padding-left:4px;padding-right:4px;gap:0;font-size:11px}.tab-index{display:none}}