:root{--paper:#f3efe4;--paper-2:#e9e2d3;--ink:#161917;--muted:#67675f;--red:#a62a1f;--green:#254d43;--gold:#b99a5d;--line:rgba(22,25,23,.18);--max:1240px;--serif:"Songti SC","STSong",SimSun,serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--paper)}body{margin:0;color:var(--ink);background:radial-gradient(circle at 85% 4%,rgba(37,77,67,.14),transparent 25rem),linear-gradient(90deg,transparent 0 6.7%,rgba(22,25,23,.055) 6.7% 6.78%,transparent 6.78% 93.2%,rgba(22,25,23,.055) 93.2% 93.28%,transparent 93.28%),var(--paper);font-family:var(--serif);line-height:1.8}a{color:inherit}.skip{position:fixed;z-index:99;top:10px;left:10px;transform:translateY(-150%);padding:8px 14px;background:var(--ink);color:#fff}.skip:focus{transform:none}.progress{position:fixed;z-index:90;top:0;left:0;width:100%;height:3px}.progress i{display:block;width:0;height:100%;background:var(--red)}
.site-header{position:sticky;z-index:40;top:0;display:flex;align-items:center;justify-content:space-between;gap:30px;padding:16px max(24px,calc((100% - var(--max))/2));background:rgba(243,239,228,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}.identity,.footer-brand{display:flex;align-items:center;gap:12px;text-decoration:none}.identity span:last-child{display:flex;flex-direction:column}.identity b{font-size:18px;letter-spacing:.12em}.identity small{color:var(--muted);font-size:10px;letter-spacing:.1em}.seal{display:grid;width:38px;height:38px;place-items:center;color:var(--paper);background:var(--red);border-radius:2px;font-family:"STKaiti",KaiTi,serif;font-size:24px;box-shadow:inset 0 0 0 2px var(--red),inset 0 0 0 3px rgba(255,255,255,.55)}nav{display:flex;gap:26px}nav a{position:relative;color:#3f423e;font-size:13px;text-decoration:none}nav a::after{content:"";position:absolute;right:0;bottom:-6px;left:0;height:1px;background:var(--red);transform:scaleX(0);transform-origin:right;transition:.3s}nav a:hover::after,nav a.active::after{transform:scaleX(1);transform-origin:left}.menu{display:none;border:0;background:transparent;font:600 14px var(--serif)}
.hero{position:relative;display:grid;grid-template-columns:1.18fr .82fr;gap:clamp(40px,7vw,100px);min-height:760px;max-width:var(--max);margin:auto;padding:clamp(90px,11vw,150px) 24px 100px;align-items:center}.overline,.kicker{margin:0 0 24px;color:var(--green);font:700 11px/1.4 Georgia,serif;letter-spacing:.22em}.hero h1,.section-title h2,.about h2{margin:0;font-size:clamp(48px,6.7vw,96px);font-weight:600;letter-spacing:-.055em;line-height:1.16}.hero h1 em{color:var(--red);font-style:normal}.lede{max-width:690px;margin:34px 0;color:#4f534e;font-size:clamp(16px,1.5vw,20px)}.hero-links{display:flex;gap:10px;flex-wrap:wrap}.hero-links a{display:flex;min-width:190px;justify-content:space-between;padding:15px 18px;border-top:1px solid var(--ink);font-size:13px;text-decoration:none;transition:.25s}.hero-links a:hover{color:var(--paper);background:var(--ink)}.hero-note{position:absolute;right:24px;bottom:36px;max-width:540px;margin:0;color:var(--muted);font-size:12px;text-align:right}
.answer-orbit{position:relative;aspect-ratio:1;border:1px solid rgba(37,77,67,.3);border-radius:50%;background:radial-gradient(circle,rgba(185,154,93,.24),transparent 38%),repeating-radial-gradient(circle,transparent 0 45px,rgba(37,77,67,.13) 46px 47px);box-shadow:inset 0 0 70px rgba(37,77,67,.08)}.answer-orbit::before,.answer-orbit::after{content:"";position:absolute;inset:8%;border:1px dashed rgba(166,42,31,.42);border-radius:50%;animation:spin 28s linear infinite}.answer-orbit::after{inset:24%;animation-direction:reverse;animation-duration:18s}.core{position:absolute;z-index:2;top:50%;left:50%;display:grid;width:38%;aspect-ratio:1;transform:translate(-50%,-50%);place-content:center;text-align:center;color:var(--paper);background:var(--green);border-radius:50%;box-shadow:0 30px 70px rgba(37,77,67,.28)}.core span{font:700 clamp(36px,5vw,62px)/1 Georgia,serif}.core small{margin-top:12px;font-size:10px;letter-spacing:.15em}.query{position:absolute;z-index:3;top:10%;left:-4%;padding:9px 15px;background:var(--paper);border:1px solid var(--ink);font-size:12px}.query::after{content:"";position:absolute;top:50%;left:100%;width:70px;border-top:1px solid var(--ink)}.orbit{position:absolute;z-index:3;display:grid;width:48px;height:48px;place-items:center;background:var(--paper);border:1px solid var(--green);border-radius:50%;font-size:11px}.orbit-a{top:15%;right:16%}.orbit-b{right:5%;bottom:27%}.orbit-c{bottom:7%;left:33%}.orbit-d{top:37%;left:2%}@keyframes spin{to{transform:rotate(360deg)}}
.marquee{overflow:hidden;color:var(--paper);background:var(--ink);border-block:1px solid var(--ink);white-space:nowrap}.marquee div{width:max-content;padding:12px 0;font-size:13px;letter-spacing:.16em;animation:marquee 28s linear infinite}@keyframes marquee{to{transform:translateX(-50%)}}
.section{position:relative;max-width:var(--max);margin:auto;padding:130px 24px}.section+.section{border-top:1px solid var(--line)}.section-index{position:absolute;top:42px;left:24px;color:var(--red);font:700 11px Georgia,serif;letter-spacing:.13em}.section-title{max-width:940px}.section-title h2,.about h2{font-size:clamp(40px,5.2vw,72px)}.definition{display:grid;grid-template-columns:.45fr 1.2fr .75fr;gap:40px;margin-top:70px;padding-top:28px;border-top:1px solid var(--ink)}.definition p{margin:0}.definition>p:nth-child(2){font-size:18px}.dropcap{color:var(--red);font:700 clamp(48px,7vw,88px)/1 Georgia,serif}.definition aside{padding-left:22px;color:var(--muted);border-left:3px solid var(--gold);font-size:13px}.compare{display:grid;grid-template-columns:1fr auto 1fr;align-items:stretch;margin-top:75px;border:1px solid var(--ink)}.compare article{padding:42px}.compare article:last-child{color:var(--paper);background:var(--green)}.compare span{font:700 13px Georgia,serif;letter-spacing:.2em}.compare h3{margin:48px 0 24px;font-size:26px}.compare ul{margin:0;padding-left:18px;color:inherit}.compare li{margin:7px 0}.versus{display:grid;width:52px;place-items:center;color:var(--paper);background:var(--red);font-size:25px}
.framework{max-width:none;padding-inline:max(24px,calc((100% - var(--max))/2));color:var(--paper);background:var(--green)}.framework .section-index,.framework .kicker{color:#e4c789}.layers{margin:78px 0 0;padding:0;border-top:1px solid rgba(255,255,255,.45);list-style:none}.layers li{display:grid;grid-template-columns:80px minmax(0,1fr) auto;gap:30px;align-items:center;padding:32px 0;border-bottom:1px solid rgba(255,255,255,.22);transition:.25s}.layers li:hover{padding-left:16px;background:rgba(255,255,255,.04)}.layers b{color:#e4c789;font:400 16px Georgia,serif}.layers h3{margin:0 0 7px;font-size:25px}.layers p{max-width:700px;margin:0;color:rgba(255,255,255,.7);font-size:14px}.layers span{color:rgba(255,255,255,.34);font:700 11px Georgia,serif;letter-spacing:.2em}
.lab{max-width:none;padding-inline:max(24px,calc((100% - var(--max))/2));background:var(--paper-2)}.lab-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(50px,8vw,120px);align-items:start}.lab .section-title p:last-child{max-width:600px;color:var(--muted);font-size:14px}.checklist{padding:26px;background:rgba(255,255,255,.46);border:1px solid var(--ink);box-shadow:15px 15px 0 rgba(22,25,23,.08)}.checklist label{display:flex;gap:16px;padding:16px 4px;border-bottom:1px solid var(--line);cursor:pointer}.checklist input{width:20px;height:20px;margin-top:4px;accent-color:var(--red)}.checklist span{display:flex;flex-direction:column}.checklist b{font-size:16px}.checklist small{color:var(--muted);font-size:12px}.score{display:flex;align-items:center;gap:25px;margin:28px 0}.score strong{color:var(--red);font:700 58px/1 Georgia,serif}.score small{font-size:14px}.score p{margin:0;color:var(--muted);font-size:13px}.checklist button{width:100%;padding:12px;border:1px solid var(--ink);background:transparent;font:600 13px var(--serif);cursor:pointer}.checklist button:hover{color:var(--paper);background:var(--ink)}
.note-grid{display:grid;grid-template-columns:repeat(3,1fr);margin-top:70px;border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.note-grid article{min-height:330px;padding:26px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);transition:.3s}.note-grid article:hover{background:rgba(185,154,93,.12)}.note-grid article.featured{color:var(--paper);background:var(--red)}.note-grid span{font:700 10px Georgia,serif;letter-spacing:.16em}.note-grid h3{margin:58px 0 18px;font-size:24px;line-height:1.5}.note-grid p{color:inherit;font-size:13px;opacity:.75}.topic{margin-top:18px;padding:0 0 5px;color:inherit;background:none;border:0;border-bottom:1px solid currentColor;font:600 12px var(--serif);cursor:pointer}.topic-panel{position:fixed;z-index:80;right:24px;bottom:24px;width:min(500px,calc(100% - 48px));padding:34px;color:var(--paper);background:var(--ink);box-shadow:0 30px 90px rgba(0,0,0,.35)}.topic-panel .close-topic{position:absolute;top:14px;right:18px;color:var(--paper);background:none;border:0;font-size:28px;cursor:pointer}.topic-panel>p{color:#e4c789;font-size:11px;letter-spacing:.15em}.topic-panel h3{font-size:25px}.topic-panel li{margin:8px 0;color:rgba(255,255,255,.72);font-size:13px}
.about{max-width:none;padding-inline:max(24px,calc((100% - var(--max))/2));color:var(--paper);background:var(--ink)}.about .section-index,.about .kicker{color:#e4c789}.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(60px,10vw,150px);align-items:center}.about-copy>p:not(.kicker){max-width:680px;color:rgba(255,255,255,.67)}.wechat-card{display:grid;grid-template-columns:150px 1fr;gap:25px;align-items:center;padding:22px;border:1px solid rgba(255,255,255,.25)}.wechat-card img{width:150px;height:150px;object-fit:cover;background:#fff}.wechat-card span{color:#e4c789;font-size:11px;letter-spacing:.15em}.wechat-card h3{margin:5px 0;font-size:28px}.wechat-card p{margin:0;color:rgba(255,255,255,.6);font-size:12px}.principle-band{display:grid;grid-template-columns:repeat(3,1fr);text-align:center;background:var(--red)}.principle-band p{margin:0;padding:30px;color:var(--paper);border-right:1px solid rgba(255,255,255,.4);font-size:17px;letter-spacing:.18em}
.site-footer{display:grid;grid-template-columns:.8fr 1.5fr 1fr;gap:60px;padding:70px max(24px,calc((100% - var(--max))/2));background:#dfd7c8;border-top:1px solid var(--ink)}.footer-brand b{font-size:21px;letter-spacing:.15em}.site-footer p{color:var(--muted);font-size:12px}.boundary b{font-size:13px}.boundary p{max-width:560px}.filing{text-align:center}.filing a{display:block;margin-top:8px;color:#454945;font-size:12px;text-underline-offset:4px}
.reveal{animation:rise .7s ease both}@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@media (max-width:900px){.site-header{padding:12px 18px}.menu{display:block}.site-header nav{position:absolute;top:100%;right:0;left:0;display:none;flex-direction:column;gap:0;padding:10px 20px 20px;background:var(--paper);border-bottom:1px solid var(--ink)}.site-header nav.open{display:flex}.site-header nav a{padding:10px 0}.hero{grid-template-columns:1fr;min-height:auto;padding-top:80px}.answer-orbit{width:min(560px,88vw);margin:30px auto}.hero-note{position:static;grid-column:1;margin-top:10px;text-align:left}.definition{grid-template-columns:1fr}.dropcap{margin-bottom:-20px}.compare{grid-template-columns:1fr}.versus{width:auto;height:45px}.lab-grid,.about-grid{grid-template-columns:1fr}.note-grid{grid-template-columns:repeat(2,1fr)}.site-footer{grid-template-columns:1fr 1fr}.filing{grid-column:1/-1}}
@media (max-width:600px){.identity small{display:none}.hero{padding-inline:18px}.hero h1{font-size:46px}.section{padding:105px 18px}.section-index{top:32px;left:18px}.section-title h2,.about h2{font-size:39px}.answer-orbit{width:82vw}.query{left:0}.orbit{width:42px;height:42px}.compare article{padding:30px}.layers li{grid-template-columns:45px 1fr}.layers span{display:none}.note-grid{grid-template-columns:1fr}.note-grid article{min-height:270px}.note-grid h3{margin-top:38px}.wechat-card{grid-template-columns:105px 1fr}.wechat-card img{width:105px;height:105px}.principle-band{grid-template-columns:1fr}.principle-band p{border-right:0;border-bottom:1px solid rgba(255,255,255,.35)}.site-footer{grid-template-columns:1fr;gap:26px}.filing{grid-column:auto}.marquee div{animation-duration:19s}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.answer-orbit::before,.answer-orbit::after,.marquee div,.reveal{animation:none}}