:root{
  --ink:#17211d;
  --muted:#596660;
  --line:#d8dfda;
  --soft:#f3f6f3;
  --green:#103f32;
  --green-2:#225d4c;
  --orange:#f15a38;
  --orange-soft:#fff0ea;
  --white:#fff;
  --shadow:0 18px 55px rgba(18,45,37,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:"DM Sans","Noto Sans SC",system-ui,sans-serif;font-size:15px;line-height:1.65}
a{color:inherit}button,input{font:inherit}button{color:inherit}img{display:block;max-width:100%}
.site-topbar{position:sticky;z-index:40;top:0;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:58px;padding:0 clamp(20px,4vw,72px);color:#fff;background:rgba(13,53,42,.96);border-bottom:1px solid rgba(255,255,255,.16);backdrop-filter:blur(16px)}
.site-topbar>span{color:#a9c7bb;font-size:11px;font-weight:800;letter-spacing:.18em}
.site-topbar nav{justify-self:end;display:flex;gap:22px}.site-topbar a{text-decoration:none}.site-topbar nav a{color:#dbe8e2;font-size:13px}.site-topbar nav a:hover,.back-link:hover{color:#fff}.back-link{font-size:13px;font-weight:700}
main{width:min(1500px,calc(100% - 48px));margin:0 auto;padding:26px 0 80px}

.pmc-hero{overflow:hidden;display:grid;grid-template-columns:2fr 1fr;min-height:500px;background:#07120e;border-radius:22px}
.hero-media{position:relative;overflow:hidden;min-height:500px;margin:0;cursor:zoom-in}.hero-media img{width:100%;height:100%;object-fit:cover}.hero-media::after{content:"点击放大";position:absolute;top:18px;right:18px;padding:7px 10px;color:#fff;background:rgba(5,20,15,.7);border-radius:7px;font-size:11px}
.hero-media figcaption{position:absolute;right:0;bottom:0;left:0;padding:70px 24px 18px;color:#fff;background:linear-gradient(transparent,rgba(3,17,12,.95));font-size:13px}
.hero-copy{padding:46px 38px;color:#fff;background:radial-gradient(circle at 100% 0,rgba(241,90,56,.18),transparent 45%),#0d3027}
.eyebrow,.section-head>div>span,.card-kicker,.sources>span{color:var(--orange);font-size:11px;font-weight:800;letter-spacing:.15em}
.hero-copy h1{margin:10px 0 0;font-size:44px;line-height:1.1;letter-spacing:-.035em}.hero-en{margin:5px 0 0;color:#abc5bb}
.identity-tags{display:flex;flex-wrap:wrap;gap:7px;margin:20px 0}.identity-tags span{padding:7px 10px;color:#e5f0eb;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:999px;font-size:11px}
.hero-copy blockquote{margin:24px 0;padding:15px 0 15px 18px;color:#fff;border-left:3px solid var(--orange);font-size:15px;font-weight:600}
.hero-copy dl{margin:0}.hero-copy dl div{display:grid;grid-template-columns:82px 1fr;gap:8px;padding:10px 0;border-top:1px solid rgba(255,255,255,.12)}.hero-copy dt{color:#9fbbb0;font-size:11px}.hero-copy dd{margin:0;font-size:12px}

.section-block{scroll-margin-top:76px;margin-top:22px;padding:30px;background:#fff;border:1px solid var(--line);border-radius:20px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:40px;margin-bottom:22px}.section-head h2,.sources h2{margin:6px 0 0;font-size:27px;line-height:1.15;letter-spacing:-.025em}.section-head>p{width:min(600px,50%);margin:0;color:var(--muted);font-size:13px;text-align:right}

.system-map{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;padding:30px;background:radial-gradient(circle at center,#edf4f0,#fff 62%);border:1px solid var(--line);border-radius:16px}
.system-node{position:relative;min-height:110px;padding:18px;text-align:left;background:#fff;border:1px solid #bccbc4;border-radius:14px;box-shadow:0 12px 28px rgba(20,50,41,.08);cursor:pointer;transition:.18s}
.system-node:hover,.system-node:focus-visible,.system-node.active{color:#fff;background:var(--green);border-color:var(--green);outline:0;transform:translateY(-3px);box-shadow:0 18px 35px rgba(20,50,41,.18)}
.system-node.center{grid-column:2;grid-row:2;color:#fff;background:var(--orange);border-color:var(--orange)}
.system-node b{display:block;font-size:16px}.system-node span{display:block;margin-top:7px;color:#6a7972;font-size:11px}.system-node:hover span,.system-node:focus-visible span,.system-node.active span,.system-node.center span{color:#dce8e3}.system-node em{position:absolute;top:12px;right:13px;color:var(--orange);font-size:10px;font-style:normal;font-weight:800}.system-node:hover em,.system-node.active em,.system-node.center em{color:#fff}
.system-node::after{content:"";position:absolute;z-index:-1;right:-15px;top:50%;width:15px;border-top:2px solid #9ab0a6}.system-node:nth-child(3n)::after{display:none}
.system-inspector{min-height:88px;margin-top:10px;padding:17px 20px;color:#fff;background:var(--green);border-radius:13px}.inspector-content{display:grid;grid-template-columns:220px 1fr auto;align-items:center;gap:20px}.inspector-content small{display:block;color:#9fc0b4;font-size:11px;letter-spacing:.1em}.inspector-content strong{font-size:18px}.inspector-content p{margin:0;color:#d5e5de;font-size:13px}.inspector-content button{padding:9px 12px;color:#fff;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);border-radius:8px;cursor:pointer;font-size:12px}

.dimension-tabs{position:sticky;z-index:20;top:58px;display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:4px;padding:8px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 10px 25px rgba(18,45,37,.07)}
.dimension-tab{min-width:0;padding:10px 5px;color:#637069;background:transparent;border:0;border-radius:10px;cursor:pointer}.dimension-tab small{display:block;font-size:10px}.dimension-tab span{display:block;margin-top:3px;font-size:11px;line-height:1.25}.dimension-tab:hover{background:var(--soft)}.dimension-tab.active{color:#fff;background:var(--green)}
.dimension-intro{display:grid;grid-template-columns:1fr auto;gap:24px;margin:14px 0;padding:22px;color:#fff;background:var(--green);border-radius:14px}.dimension-intro span{color:#f38a70;font-size:10px;font-weight:800;letter-spacing:.13em}.dimension-intro h3{margin:5px 0;font-size:24px}.dimension-intro p{max-width:850px;margin:0;color:#d0e0d9;font-size:13px}.dimension-intro dl{display:flex;gap:8px;margin:0}.dimension-intro dl div{min-width:92px;padding:10px;background:rgba(255,255,255,.08);border-radius:9px}.dimension-intro dt{color:#9fc0b4;font-size:9px}.dimension-intro dd{margin:3px 0 0;font-size:15px;font-weight:700}
.evidence-list{display:grid;gap:15px}.evidence-card{overflow:hidden;background:#fff;border:1px solid #ced7d2;border-radius:15px}.evidence-card-main{display:grid;grid-template-columns:2fr 1fr;min-height:430px}.evidence-media{position:relative;overflow:hidden;min-height:430px;margin:0;background:#07110e;cursor:zoom-in}.evidence-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s}.evidence-media:hover img{transform:scale(1.02)}.evidence-media figcaption{position:absolute;right:0;bottom:0;left:0;padding:62px 18px 14px;color:#fff;background:linear-gradient(transparent,rgba(3,15,11,.94));font-size:12px}.evidence-media figcaption b{display:block;font-size:14px}.image-callout{position:absolute;padding:6px 8px;color:#fff;background:rgba(13,56,44,.86);border:1px solid rgba(255,255,255,.42);border-radius:7px;font-size:10px;font-weight:700}.image-callout.one{top:18px;left:18px}.image-callout.two{right:18px;bottom:62px;background:rgba(241,90,56,.88)}
.evidence-copy{display:flex;flex-direction:column;padding:22px}.evidence-title{display:flex;gap:10px;padding-bottom:13px;border-bottom:1px solid var(--line)}.evidence-title>span{color:var(--orange);font-size:12px;font-weight:800}.evidence-title h3{margin:0;font-size:18px;line-height:1.25}.evidence-title small{display:block;margin-top:4px;color:var(--muted);font-size:10px}.evidence-copy section{padding:12px 0;border-bottom:1px solid var(--line)}.evidence-copy section>small{color:#64716b;font-size:10px;font-weight:800;letter-spacing:.1em}.evidence-copy section.ai>small{color:var(--orange)}.evidence-copy p{margin:5px 0 0;color:#38473f;font-size:12px;line-height:1.62}.metric-pill{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding:10px 12px;color:#fff;background:var(--green);border-radius:9px}.metric-pill span{font-size:10px}.metric-pill b{font-size:14px}.audio-proof{margin-top:8px;padding:9px;background:var(--orange-soft);border-radius:8px}.audio-proof small{display:block;color:#ae432a;font-size:9px;font-weight:800}.audio-proof audio{width:100%;height:30px;margin-top:5px}

.lab-grid{display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:12px}.lab-grid>article{min-width:0;padding:24px;background:var(--soft);border:1px solid var(--line);border-radius:16px}.lab-grid h3{margin:6px 0 18px;font-size:21px}.lab-grid p{color:#4e5d55;font-size:12px}
.body-model{display:grid;grid-template-columns:1fr 1.2fr 1fr;grid-template-areas:". head ." ". thorax ." "leftarm stomach rightarm" "leftleg . rightleg";gap:7px}.body-part{padding:9px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:9px}.body-part b,.body-part span{display:block}.body-part b{font-size:10px}.body-part span{color:var(--orange);font-size:17px;font-weight:800}.body-part.head{grid-area:head}.body-part.thorax{grid-area:thorax}.body-part.stomach{grid-area:stomach}.body-part.arm.left{grid-area:leftarm}.body-part.arm.right{grid-area:rightarm}.body-part.leg.left{grid-area:leftleg}.body-part.leg.right{grid-area:rightleg}
.control-list{display:grid;gap:12px}.control-list label>span{display:flex;justify-content:space-between;font-size:11px}.control-list input{width:100%;accent-color:var(--orange)}.lab-results{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:18px}.lab-results>div{padding:10px;background:#fff;border-radius:9px}.lab-results span{display:block;color:var(--muted);font-size:9px}.lab-results b{display:block;font-size:19px}.lab-results i{display:block;overflow:hidden;height:5px;margin-top:6px;background:#e0e7e3;border-radius:5px}.lab-results em{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--green),var(--orange));transition:.2s}.formula{padding:10px;color:#fff!important;background:var(--green);border-radius:9px}
.retention-columns{display:grid;grid-template-columns:1fr 1fr;gap:8px}.retention-columns section{padding:12px;background:#fff;border-radius:10px}.retention-columns strong{display:block;margin-bottom:8px;color:var(--orange);font-size:12px}.retention-columns span{display:block;padding:4px 0;color:#46544d;font-size:10px;border-bottom:1px solid #edf0ed}.retention-columns span:last-child{border-bottom:0}
.sources{margin-top:24px;padding:36px;color:#fff;background:var(--green);border-radius:18px}.sources p{max-width:980px;color:#cbded7}.sources>div{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}.sources a{padding:9px 13px;text-decoration:none;border:1px solid rgba(255,255,255,.26);border-radius:9px;font-size:12px;font-weight:700}.sources a:first-child{background:var(--orange);border-color:var(--orange)}

.node-preview{position:fixed;z-index:100;overflow:hidden;width:min(660px,calc(100vw - 28px));height:min(330px,calc(100vh - 28px));margin:0;color:#fff;background:#07110e;border:3px solid #fff;border-radius:17px;box-shadow:0 28px 90px rgba(0,0,0,.32);pointer-events:none}.node-preview[hidden]{display:none}.node-preview img{width:100%;height:100%;object-fit:cover}.node-preview figcaption{position:absolute;right:0;bottom:0;left:0;padding:50px 18px 14px;background:linear-gradient(transparent,rgba(4,20,15,.94))}.node-preview strong{display:block;font-size:18px}.node-preview span{color:#d9e7e1;font-size:11px}
.image-lightbox{width:min(1400px,94vw);height:min(900px,92vh);padding:0;color:#fff;background:#07110e;border:0;border-radius:18px;box-shadow:var(--shadow)}.image-lightbox::backdrop{background:rgba(3,14,11,.87);backdrop-filter:blur(8px)}.image-lightbox>button{position:absolute;z-index:3;top:14px;right:14px;width:40px;height:40px;color:#fff;background:rgba(0,0,0,.6);border:0;border-radius:50%;cursor:pointer;font-size:22px}.image-lightbox figure{display:flex;width:100%;height:100%;margin:0;flex-direction:column}.image-lightbox img{width:100%;min-height:0;flex:1;object-fit:contain}.image-lightbox figcaption{padding:12px 20px;color:#d9e5df;font-size:12px}

/* 100% 页面比例的可读性下限：辅助信息不再低于 11px，正文提升到 14px。 */
.site-topbar>span,
.hero-media::after,
.eyebrow,.section-head>div>span,.card-kicker,.sources>span,
.identity-tags span,.hero-copy dt,.system-node span,
.inspector-content small,.dimension-tab small,.dimension-intro span,
.evidence-title small,.evidence-copy section>small,.metric-pill span,
.audio-proof small,.body-part b,.lab-results span,
.image-callout{font-size:12px}
.system-node em{font-size:12px}
.hero-copy dd,.system-node span,.dimension-tab span,.node-preview span{font-size:13px}
.section-head>p,.inspector-content p,.dimension-intro p,
.evidence-media figcaption,.lab-grid p,.sources a,
.image-lightbox figcaption{font-size:14px}
.inspector-content button,.control-list label>span,
.retention-columns strong,.retention-columns span{font-size:13px}
.dimension-intro dt{font-size:12px;font-weight:700}
.evidence-copy p{font-size:14px;line-height:1.68}
.evidence-media figcaption b{font-size:15px}
.metric-pill b{font-size:15px}

@media(max-width:1120px){.dimension-tabs{grid-template-columns:repeat(5,1fr)}.lab-grid{grid-template-columns:1fr}.evidence-card-main{grid-template-columns:1.55fr 1fr}.system-map{grid-template-columns:repeat(2,1fr)}.system-node.center{grid-column:auto;grid-row:auto}.system-node::after{display:none}}
@media(max-width:820px){.site-topbar{grid-template-columns:1fr auto;padding:0 14px}.site-topbar>span{display:none}.site-topbar nav{gap:10px}.site-topbar nav a:nth-child(2){display:none}main{width:calc(100% - 22px);padding-top:12px}.pmc-hero{grid-template-columns:1fr}.hero-media{min-height:340px}.hero-copy{padding:28px 22px}.section-block{padding:18px 11px}.section-head{display:block}.section-head>p{width:auto;margin-top:9px;text-align:left}.system-map{grid-template-columns:1fr}.inspector-content{grid-template-columns:1fr}.dimension-tabs{top:58px;grid-template-columns:repeat(2,1fr)}.dimension-intro{grid-template-columns:1fr}.dimension-intro dl{flex-wrap:wrap}.evidence-card-main{grid-template-columns:1fr}.evidence-media{min-height:300px}.evidence-copy{padding:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}