:root{
  color-scheme:dark;
  --bg:#0a0b0e;
  --bg-soft:#101216;
  --panel:#13161b;
  --panel-2:#171a20;
  --ink:#ece8df;
  --muted:#a4a09a;
  --dim:#6f716f;
  --line:rgba(236,232,223,.13);
  --line-strong:rgba(236,232,223,.28);
  --warm:#d9d1bf;
  --blue:#8bb5d8;
  --blue-soft:rgba(96,151,196,.13);
  --gold:#bca77b;
  --danger:#d48e84;
  --font-sans:"Inter","SF Pro Display","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Songti SC","STSong","Noto Serif CJK SC",serif;
  --font-mono:"SFMono-Regular","JetBrains Mono","Consolas",monospace;
  --max:1280px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-sans);line-height:1.65;overflow-x:hidden}
a{color:inherit}
button,input{font:inherit}
button{color:inherit}
.skip{position:fixed;left:16px;top:-60px;z-index:1000;padding:10px 14px;background:var(--ink);color:var(--bg);border-radius:8px;text-decoration:none}
.skip:focus{top:16px}
.grain{position:fixed;inset:0;pointer-events:none;z-index:99;opacity:.045;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E")}
.topbar{position:fixed;left:0;right:0;top:0;height:76px;z-index:40;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 34px;border-bottom:1px solid transparent;transition:background .3s,border-color .3s,backdrop-filter .3s}
.topbar.scrolled{background:rgba(10,11,14,.82);border-color:var(--line);backdrop-filter:blur(18px)}
.wordmark{display:inline-flex;align-items:center;gap:12px;text-decoration:none;width:max-content}
.seal{display:grid;place-items:center;width:36px;height:36px;border:1px solid var(--line-strong);font-family:var(--font-serif);font-size:17px}
.wordmark strong,.wordmark small{display:block}.wordmark strong{font-size:15px;letter-spacing:.08em}.wordmark small{font-size:8px;letter-spacing:.17em;color:var(--dim);margin-top:2px}
.nav{display:flex;gap:30px}.nav a{position:relative;text-decoration:none;color:var(--muted);font-size:12px;letter-spacing:.06em}.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:1px;background:var(--warm);transition:right .25s}.nav a:hover{color:var(--ink)}.nav a:hover::after{right:0}
.domain-link{justify-self:end;display:inline-flex;align-items:center;gap:8px;font-size:12px;text-decoration:none;padding:9px 12px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.025);transition:border-color .2s,background .2s}.domain-link:hover{border-color:var(--line-strong);background:rgba(255,255,255,.05)}
main{padding-top:76px}
.hero{min-height:calc(100svh - 76px);display:grid;grid-template-columns:minmax(0,1.04fr) minmax(440px,.96fr);align-items:center;gap:8vw;max-width:var(--max);margin:0 auto;padding:72px 42px 82px}
.eyebrow,.section-no,.panel-kicker,.terminal-label{margin:0;color:var(--dim);font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase}
.hero h1{display:flex;gap:.06em;margin:26px 0 22px;font-family:var(--font-serif);font-size:clamp(92px,13vw,190px);font-weight:500;line-height:.8;letter-spacing:-.11em}.hero h1 span:last-child{margin-top:.22em;color:var(--warm)}
.lead{max-width:650px;margin:0;color:#c7c3bb;font-size:clamp(17px,1.9vw,24px);line-height:1.65;letter-spacing:.01em}
.hero blockquote{margin:34px 0 0;padding:0 0 0 18px;border-left:1px solid var(--gold);font-family:var(--font-serif);font-size:20px;color:var(--warm)}
.hero-actions{display:flex;align-items:center;gap:22px;margin-top:38px}.primary-action{display:inline-flex;align-items:center;min-height:43px;padding:0 17px;text-decoration:none;border:1px solid var(--warm);background:var(--warm);color:#141414;font-size:12px;letter-spacing:.04em;transition:transform .2s,background .2s}.primary-action:hover{transform:translateY(-2px);background:#eee7d8}.text-action{border:0;background:none;padding:8px 0;color:var(--muted);cursor:pointer;font-size:12px;border-bottom:1px solid var(--line-strong)}.text-action:hover{color:var(--ink)}
.hero-diagram{position:relative;aspect-ratio:1;max-width:590px;width:100%;justify-self:end;border:1px solid var(--line);border-radius:50%;background:radial-gradient(circle at center,rgba(139,181,216,.07),transparent 34%),linear-gradient(rgba(255,255,255,.012),rgba(255,255,255,0));isolation:isolate}
.hero-diagram::before,.hero-diagram::after{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:var(--line);z-index:-1}.hero-diagram::after{left:0;right:0;top:50%;bottom:auto;width:auto;height:1px}
.orbit{position:absolute;inset:50%;border:1px solid var(--line);border-radius:50%;transform:translate(-50%,-50%)}.orbit-a{width:42%;height:42%}.orbit-b{width:68%;height:68%}.orbit-c{width:91%;height:91%;border-style:dashed;opacity:.65}
.core-node,.satellite{position:absolute;border:1px solid var(--line-strong);background:rgba(14,16,20,.9);cursor:pointer;box-shadow:0 12px 40px rgba(0,0,0,.3);transition:transform .25s,border-color .25s,background .25s}.core-node:hover,.satellite:hover,.core-node.active,.satellite.active{border-color:var(--warm);background:#191c22}.core-node{left:50%;top:50%;transform:translate(-50%,-50%);width:132px;height:132px;border-radius:50%}.core-node:hover,.core-node.active{transform:translate(-50%,-50%) scale(1.04)}.core-node span{display:block;font-family:var(--font-serif);font-size:26px}.core-node small{display:block;margin-top:6px;color:var(--dim);font-size:7px;letter-spacing:.14em}
.satellite{display:grid;place-items:center;width:70px;height:70px;border-radius:50%;font-size:11px}.s1{left:51%;top:10%}.s2{right:7%;top:50%}.s3{left:41%;bottom:4%}.s4{left:7%;top:42%}.satellite:hover,.satellite.active{transform:scale(1.08)}
.diagram-caption{position:absolute;left:6%;right:6%;bottom:-48px;display:grid;grid-template-columns:42px 1fr;gap:12px;padding-top:16px;border-top:1px solid var(--line)}.caption-index{font-family:var(--font-mono);font-size:11px;color:var(--blue)}.diagram-caption strong{font-size:13px}.diagram-caption p{margin:4px 0 0;color:var(--muted);font-size:11px;line-height:1.5}
.statement-band{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);max-width:100%;padding:0 max(32px,calc((100vw - var(--max))/2 + 42px))}.statement-band>div{padding:22px 24px;border-right:1px solid var(--line)}.statement-band>div:first-child{border-left:1px solid var(--line)}.statement-band small,.statement-band strong{display:block}.statement-band small{font-family:var(--font-mono);font-size:8px;letter-spacing:.12em;color:var(--dim)}.statement-band strong{margin-top:6px;font-size:12px;font-weight:560}
.section{max-width:var(--max);margin:0 auto;padding:130px 42px;border-bottom:1px solid var(--line)}.section-head{display:grid;grid-template-columns:150px minmax(0,1fr) minmax(260px,380px);gap:38px;align-items:start}.section-head h2{margin:0;font-family:var(--font-serif);font-size:clamp(38px,5vw,68px);font-weight:450;line-height:1.22;letter-spacing:-.035em}.section-head>p:last-child{margin:8px 0 0;color:var(--muted);font-size:14px}.section-head.compact{grid-template-columns:150px minmax(0,1fr) minmax(250px,340px)}
.structure-view{display:grid;grid-template-columns:280px minmax(0,1fr);gap:76px;margin-top:82px}.structure-rail{display:grid;align-content:start}.layer-tab{display:grid;grid-template-columns:46px 1fr;align-items:center;width:100%;padding:17px 4px;border:0;border-bottom:1px solid var(--line);background:none;color:var(--muted);text-align:left;cursor:pointer;font-size:13px;transition:color .2s,padding-left .2s}.layer-tab span{font-family:var(--font-mono);font-size:9px;color:var(--dim)}.layer-tab:hover,.layer-tab.active{color:var(--ink);padding-left:10px}.layer-tab.active{border-bottom-color:var(--warm)}
.layer-panel{min-height:410px;padding:54px 58px;border:1px solid var(--line);background:linear-gradient(140deg,rgba(255,255,255,.035),rgba(255,255,255,.008));position:relative;overflow:hidden}.layer-panel::after{content:"";position:absolute;width:420px;height:420px;right:-210px;bottom:-250px;border:1px solid var(--line);border-radius:50%}.layer-panel h3{margin:10px 0 20px;font-family:var(--font-serif);font-size:58px;font-weight:450}.panel-definition{max-width:720px;color:#cdc8c0;font-size:20px;line-height:1.7}.layer-panel dl{display:grid;grid-template-columns:repeat(3,1fr);margin:48px 0 0;border-top:1px solid var(--line)}.layer-panel dl div{padding:18px 20px 0 0}.layer-panel dt{color:var(--dim);font-size:9px;letter-spacing:.12em}.layer-panel dd{margin:7px 0 0;font-size:12px}
.system-console{display:grid;grid-template-columns:350px minmax(0,1fr);margin-top:76px;border:1px solid var(--line);min-height:620px}.console-nav{border-right:1px solid var(--line);background:#0d0f12}.console-item{display:grid;grid-template-columns:42px 1fr;grid-template-rows:auto auto;width:100%;padding:19px 22px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;cursor:pointer}.console-item>span{grid-row:1/3;font-family:var(--font-mono);font-size:9px;color:var(--dim);padding-top:3px}.console-item strong{font-size:13px;font-weight:560}.console-item small{font-size:8px;letter-spacing:.11em;color:var(--dim);margin-top:3px}.console-item:hover,.console-item.active{background:rgba(255,255,255,.035)}.console-item.active strong{color:var(--blue)}.console-screen{display:flex;flex-direction:column;padding:0 46px 34px;background:radial-gradient(circle at 85% 12%,rgba(95,151,196,.1),transparent 26%),var(--panel)}.screen-top{display:flex;justify-content:space-between;padding:18px 0;border-bottom:1px solid var(--line);font-family:var(--font-mono);font-size:9px;color:var(--dim)}.live-dot{display:inline-flex;align-items:center;gap:6px}.live-dot::before{content:"";width:5px;height:5px;border-radius:50%;background:#82b9a0;box-shadow:0 0 12px rgba(130,185,160,.8)}.screen-copy{padding:58px 0 38px;max-width:760px}.screen-copy h3{margin:10px 0 18px;font-family:var(--font-serif);font-size:50px;font-weight:450}.screen-copy>p:not(.terminal-label){font-size:18px;color:#c8c4bc;max-width:680px}.screen-copy pre{margin:40px 0 0;padding:24px;border-left:1px solid var(--blue);background:rgba(0,0,0,.24);overflow:auto}.screen-copy code{font-family:var(--font-mono);font-size:12px;line-height:1.9;color:#a8c6dc}.screen-note{margin:auto 0 0;padding-top:18px;border-top:1px solid var(--line);color:var(--dim);font-size:10px}
.authority-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(420px,1.1fr);gap:52px;margin-top:72px}.authority-scale{display:grid;border-top:1px solid var(--line)}.level{display:grid;grid-template-columns:52px 1fr auto;align-items:center;padding:17px 2px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;cursor:pointer;color:var(--muted);transition:padding .2s,color .2s}.level span{font-family:var(--font-mono);font-size:10px;color:var(--dim)}.level strong{font-size:14px;font-weight:560}.level small{font-size:10px;color:var(--dim)}.level:hover,.level.active{padding-left:12px;color:var(--ink)}.level.active{border-bottom-color:var(--gold)}.authority-card{position:relative;padding:50px 52px;border:1px solid var(--line);background:var(--panel)}.authority-mark{position:absolute;right:28px;top:14px;font-family:var(--font-serif);font-size:92px;color:rgba(255,255,255,.035)}.authority-card h3{margin:14px 0 18px;font-family:var(--font-serif);font-size:42px;font-weight:450;line-height:1.25}.authority-card>p:not(.panel-kicker){color:var(--muted);max-width:650px}.separation{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:50px;background:var(--line)}.separation div{padding:17px;background:var(--bg-soft)}.separation small,.separation strong{display:block}.separation small{font-family:var(--font-mono);font-size:8px;color:var(--dim)}.separation strong{margin-top:6px;font-size:11px;font-weight:540}
.ledger{margin-top:70px;border-top:1px solid var(--line)}.ledger-row{display:grid;grid-template-columns:110px 190px 190px minmax(0,1fr) 44px;align-items:center;min-height:96px;border-bottom:1px solid var(--line);text-decoration:none;transition:background .2s,padding .2s}.ledger-row:not(.static):hover{background:rgba(255,255,255,.025);padding-left:10px}.ledger-type{font-size:10px;color:var(--dim)}.ledger-row strong{font-family:var(--font-serif);font-size:19px;font-weight:500}.ledger-row code{font-family:var(--font-mono);font-size:9px;color:var(--blue)}.ledger-row p{margin:0;color:var(--muted);font-size:12px}.row-arrow{text-align:right;font-size:16px}.status{justify-self:end;padding:4px 7px;border:1px solid rgba(130,185,160,.35);color:#8ebca7;font-family:var(--font-mono);font-size:8px}
.domain-cta{max-width:var(--max);margin:0 auto;padding:120px 42px 130px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:50px}.domain-cta h2{max-width:820px;margin:12px 0 18px;font-family:var(--font-serif);font-size:clamp(42px,5vw,68px);font-weight:450;line-height:1.2}.domain-cta p:not(.section-no){max-width:700px;color:var(--muted)}.domain-cta a{display:inline-flex;align-items:center;gap:32px;min-width:250px;justify-content:space-between;padding:18px 0;border-top:1px solid var(--warm);border-bottom:1px solid var(--warm);text-decoration:none;font-size:13px;transition:padding .2s}.domain-cta a:hover{padding-left:10px;padding-right:10px}
footer{display:flex;justify-content:space-between;padding:26px 34px;border-top:1px solid var(--line);font-size:9px;color:var(--dim);letter-spacing:.08em}
.toast{position:fixed;left:50%;bottom:28px;z-index:100;transform:translate(-50%,20px);opacity:0;padding:10px 14px;border:1px solid var(--line-strong);background:rgba(20,22,27,.94);backdrop-filter:blur(12px);font-size:11px;transition:.22s;pointer-events:none}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:980px){.topbar{grid-template-columns:1fr auto}.nav{display:none}.hero{grid-template-columns:1fr;gap:70px}.hero-diagram{justify-self:center;max-width:580px}.statement-band{grid-template-columns:1fr 1fr}.section-head,.section-head.compact{grid-template-columns:110px 1fr}.section-head>p:last-child{grid-column:2}.structure-view,.system-console,.authority-layout{grid-template-columns:1fr}.console-nav{display:grid;grid-template-columns:1fr 1fr;border-right:0}.console-screen{min-height:540px}.domain-cta{grid-template-columns:1fr}.ledger-row{grid-template-columns:90px 160px 160px 1fr 30px}}
@media(max-width:680px){.topbar{height:64px;padding:0 16px}.domain-link{font-size:0;width:38px;height:38px;justify-content:center;padding:0}.domain-link span{font-size:14px}main{padding-top:64px}.hero{min-height:auto;padding:70px 20px 110px}.hero h1{font-size:104px}.hero-actions{align-items:flex-start;flex-direction:column}.hero-diagram{width:calc(100vw - 40px)}.core-node{width:104px;height:104px}.core-node span{font-size:22px}.satellite{width:58px;height:58px;font-size:9px}.statement-band{grid-template-columns:1fr;padding:0 20px}.statement-band>div,.statement-band>div:first-child{border-left:0;border-right:0;border-bottom:1px solid var(--line)}.statement-band>div:last-child{border-bottom:0}.section{padding:94px 20px}.section-head,.section-head.compact{display:block}.section-head h2{margin-top:14px;font-size:40px}.section-head>p:last-child{margin-top:20px}.structure-view{margin-top:50px;gap:32px}.structure-rail{grid-template-columns:1fr 1fr}.layer-tab{padding:13px 4px}.layer-panel{padding:32px 24px;min-height:420px}.layer-panel h3{font-size:43px}.panel-definition{font-size:17px}.layer-panel dl{grid-template-columns:1fr}.system-console{margin-top:50px}.console-nav{grid-template-columns:1fr}.console-item{padding:15px 16px}.console-screen{padding:0 22px 24px}.screen-copy{padding-top:38px}.screen-copy h3{font-size:40px}.authority-card{padding:36px 24px}.authority-card h3{font-size:35px}.separation{grid-template-columns:1fr}.ledger-row{grid-template-columns:88px 1fr 28px;padding:18px 0}.ledger-row code,.ledger-row p{grid-column:2}.ledger-row p{margin-top:7px}.row-arrow,.status{grid-column:3;grid-row:1/4}.domain-cta{padding:90px 20px}.domain-cta h2{font-size:42px}footer{padding:22px 16px;display:grid;gap:8px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition-duration:.001ms!important}}

/* ===== v8.0 interaction refinement ===== */
.order-field{position:fixed;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none;opacity:.52}
body::before{content:"";position:fixed;inset:0;z-index:-2;background:radial-gradient(circle at 72% 17%,rgba(92,134,172,.075),transparent 28%),radial-gradient(circle at 18% 76%,rgba(188,167,123,.045),transparent 30%),var(--bg)}
.hero-copy,.hero-diagram,.statement-band,.section,.domain-cta{position:relative}
.hero-diagram{will-change:transform;box-shadow:inset 0 0 80px rgba(139,181,216,.035),0 36px 110px rgba(0,0,0,.28)}
.hero-diagram::marker{display:none}
.field-status{position:absolute;right:7%;top:7%;display:flex;align-items:center;gap:8px;color:var(--dim);font-family:var(--font-mono)}
.field-status span{width:5px;height:5px;border-radius:50%;background:#8ebca7;box-shadow:0 0 12px rgba(142,188,167,.65)}
.field-status small{font-size:7px;letter-spacing:.15em}
.topbar{will-change:transform}
.nav a.active{color:var(--ink)}.nav a.active::after{right:0}
.section,.statement-band,.domain-cta{content-visibility:auto;contain-intrinsic-size:800px}
.layer-panel,.console-screen,.authority-card,.ledger-row{will-change:transform,opacity}
.ledger-row:not(.static){position:relative;overflow:hidden}
.ledger-row:not(.static)::before{content:"";position:absolute;inset:0;transform:translateX(-105%);background:linear-gradient(90deg,transparent,rgba(139,181,216,.055),transparent);transition:transform .7s cubic-bezier(.2,.8,.2,1)}
.ledger-row:not(.static):hover::before{transform:translateX(105%)}
.domain-link,.primary-action,.domain-cta a{will-change:transform}
.boundary-transition{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;background:#07080a;opacity:0;visibility:hidden;pointer-events:none;overflow:hidden}
.boundary-transition::before,.boundary-transition::after{content:"";position:absolute;inset:-30%;background:radial-gradient(circle,rgba(139,181,216,.16),transparent 34%);transform:scale(.25);opacity:0}
.boundary-transition::after{background:radial-gradient(circle,rgba(236,232,223,.13),transparent 22%)}
.boundary-ring{width:min(46vw,520px);aspect-ratio:1;border:1px solid rgba(236,232,223,.24);border-radius:50%;position:absolute;transform:scale(.35);opacity:0}
.boundary-ring::before,.boundary-ring::after{content:"";position:absolute;border:1px solid rgba(139,181,216,.18);border-radius:50%;inset:12%}.boundary-ring::after{inset:28%;border-style:dashed}
.boundary-copy{position:relative;z-index:2;text-align:center;opacity:0;transform:translateY(12px)}
.boundary-copy small,.boundary-copy span{display:block;font-family:var(--font-mono);letter-spacing:.16em;color:var(--dim)}
.boundary-copy small{font-size:9px}.boundary-copy strong{display:block;margin:12px 0 8px;font-family:var(--font-serif);font-size:clamp(28px,5vw,58px);font-weight:450}.boundary-copy span{font-size:8px}
@media(max-width:680px){.order-field{opacity:.35}.field-status{display:none}.boundary-ring{width:78vw}.hero-diagram{box-shadow:inset 0 0 55px rgba(139,181,216,.03)}}
@media(prefers-reduced-motion:reduce){.order-field{display:none}.boundary-transition{display:none!important}}