:root {
  --paper: #f4f1ea;
  --paper-deep: #e8e3d8;
  --ink: #1e2323;
  --muted: #68706e;
  --line: #cbd0c9;
  --signal: #2a8c8b;
  --signal-dark: #1f6e70;
  --coral: #e46b4e;
  --white: #fffdf8;
  --shadow: 0 18px 50px rgba(30,35,35,.08);
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Space Grotesk", "Noto Sans SC", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); line-height: 1.7; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { cursor: pointer; }
::selection { color: var(--white); background: var(--signal); }
.site-shell { width: min(1400px, calc(100% - 48px)); margin: 0 auto; }
.topline { height: 36px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; color: var(--muted); font: 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.topline span:last-child { color: var(--signal-dark); }
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(244,241,234,.94); backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 230px; }
.brand-mark { width: 34px; height: 34px; position: relative; border: 2px solid var(--ink); display: inline-block; }
.brand-mark:before, .brand-mark:after { content: ""; position: absolute; width: 7px; height: 7px; border-radius: 50%; background: var(--signal); }
.brand-mark:before { top: -5px; left: -5px; } .brand-mark:after { right: -5px; bottom: -5px; }
.brand-mark i { position: absolute; width: 20px; height: 2px; background: var(--signal); left: 5px; top: 15px; transform: rotate(-35deg); }
.brand-copy strong { display: block; font: 700 16px/1.1 var(--display); letter-spacing: -.03em; }
.brand-copy small { display: block; margin-top: 4px; color: var(--muted); font: 9px var(--mono); letter-spacing: .12em; }
.nav { display: flex; gap: 5px; align-items: center; }
.nav a { padding: 8px 12px; border-radius: 5px; font-size: 13px; color: var(--muted); transition: .2s ease; }
.nav a:hover, .nav a.active { color: var(--ink); background: var(--paper-deep); }
.nav a.active { box-shadow: inset 0 -2px 0 var(--signal); }
.menu-toggle { display: none; border: 1px solid var(--line); background: transparent; padding: 8px 12px; color: var(--ink); }
.eyebrow { color: var(--signal-dark); font: 11px var(--mono); letter-spacing: .11em; text-transform: uppercase; }
.display { font: 600 clamp(42px, 6vw, 86px)/.98 var(--display); letter-spacing: -.065em; margin: 16px 0 22px; }
.display em { color: var(--signal); font-style: normal; }
.lead { max-width: 640px; color: var(--muted); font-size: 17px; line-height: 1.85; }
.btn { display: inline-flex; align-items: center; gap: 10px; border: 1px solid var(--ink); padding: 11px 16px; font-size: 13px; transition: .2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 4px 4px 0 var(--ink); }
.btn.primary { color: var(--white); background: var(--ink); }
.btn.ghost { border-color: var(--line); }
.btn.signal { color: var(--white); border-color: var(--signal); background: var(--signal); }
.hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr); gap: 80px; padding: 100px 0 86px; border-bottom: 1px solid var(--line); }
.hero-copy { padding-top: 18px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.hero-art { min-height: 370px; position: relative; border-left: 1px solid var(--line); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.hero-art:before { content: ""; position: absolute; width: 370px; height: 370px; border: 1px solid var(--line); border-radius: 50%; }
.hero-art:after { content: "AGENT BEHAVIOR / 01"; position: absolute; top: 12px; right: 8px; color: var(--muted); font: 10px var(--mono); letter-spacing: .08em; }
.orbit { position: relative; width: 240px; height: 240px; animation: breathe 7s ease-in-out infinite; }
.orbit:before, .orbit:after { content: ""; position: absolute; inset: 20px; border: 1px dashed var(--signal); border-radius: 50%; transform: rotate(25deg) scaleX(1.4); }
.orbit:after { inset: 55px; border-style: solid; border-color: var(--coral); transform: rotate(-40deg) scaleX(1.3); }
.node { position: absolute; width: 17px; height: 17px; border: 3px solid var(--paper); outline: 2px solid var(--signal); border-radius: 50%; background: var(--signal); }
.node.n1 { top: 16px; left: 45%; } .node.n2 { bottom: 25px; left: 12%; background: var(--coral); outline-color: var(--coral); } .node.n3 { right: 8px; top: 45%; } .node.n4 { left: 45%; top: 46%; width: 25px; height: 25px; background: var(--ink); outline-color: var(--ink); }
.metric-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.metric { padding: 24px 18px 23px 0; border-right: 1px solid var(--line); margin-right: 18px; }
.metric:last-child { border-right: 0; }
.metric b { display: block; font: 600 34px var(--display); letter-spacing: -.04em; } .metric span { color: var(--muted); font-size: 12px; }
.section { padding: 78px 0; border-bottom: 1px solid var(--line); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin-bottom: 34px; }
.section-title { margin: 8px 0 0; font: 600 clamp(28px, 3.5vw, 46px)/1.08 var(--display); letter-spacing: -.05em; }
.section-note { max-width: 350px; color: var(--muted); font-size: 13px; }
.project-list { border-top: 1px solid var(--ink); }
.project-row { display: grid; grid-template-columns: 75px 1.4fr 1fr 170px; gap: 28px; padding: 28px 0; border-bottom: 1px solid var(--line); align-items: start; transition: .2s ease; }
.project-row:hover { padding-left: 12px; padding-right: 12px; background: rgba(255,253,248,.65); }
.project-no { color: var(--signal); font: 18px var(--mono); }
.project-name { margin: 0 0 7px; font: 600 23px/1.2 var(--display); letter-spacing: -.04em; }
.project-source, .meta { color: var(--muted); font-size: 12px; }
.project-summary { color: var(--muted); font-size: 13px; line-height: 1.7; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 13px; }
.tag { display: inline-flex; padding: 3px 7px; background: var(--paper-deep); color: var(--muted); font: 10px var(--mono); }
.project-side { text-align: right; }
.status { display: inline-block; color: var(--signal-dark); font: 11px var(--mono); border-bottom: 1px solid var(--signal); padding-bottom: 5px; }
.link-arrow { display: inline-flex; color: var(--signal-dark); font-size: 12px; margin-top: 18px; }
.link-arrow:hover { text-decoration: underline; }
.ad-slot { min-height: 74px; display: flex; align-items: center; justify-content: center; padding: 18px; border: 1px dashed #aeb8ae; background: rgba(255,253,248,.35); color: var(--muted); font: 10px var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.ad-slot span { margin-right: 10px; color: var(--coral); }
.route-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--ink); }
.route { padding: 26px 28px 28px 0; margin-right: 28px; border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); }
.route:last-child { border-right: 0; }
.route-no { color: var(--coral); font: 12px var(--mono); } .route h3 { margin: 22px 0 8px; font: 600 19px var(--display); } .route p { color: var(--muted); font-size: 13px; margin: 0 0 17px; }
.quote { margin: 0; padding: 28px 30px; border-left: 4px solid var(--signal); background: var(--white); font: 500 clamp(20px, 3vw, 30px)/1.4 var(--display); letter-spacing: -.03em; }
.page-intro { padding: 74px 0 50px; border-bottom: 1px solid var(--line); }
.page-intro .display { max-width: 820px; font-size: clamp(40px, 5vw, 68px); }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--ink); }
.search { flex: 1 1 240px; border: 1px solid var(--line); background: var(--white); padding: 11px 14px; outline-color: var(--signal); }
.filter { border: 1px solid var(--line); background: transparent; color: var(--ink); padding: 10px 12px; min-width: 130px; }
.result-count { margin-left: auto; color: var(--muted); font: 11px var(--mono); }
.compare-wrap { overflow-x: auto; border-top: 1px solid var(--ink); }
.compare-table { width: 100%; border-collapse: collapse; min-width: 760px; background: var(--white); }
.compare-table th, .compare-table td { text-align: left; padding: 18px; border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); vertical-align: top; font-size: 13px; }
.compare-table th { color: var(--muted); font: 10px var(--mono); text-transform: uppercase; letter-spacing: .08em; background: var(--paper-deep); }
.compare-table td:first-child { width: 180px; color: var(--muted); font: 11px var(--mono); }
.compare-table strong { font: 600 17px var(--display); }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.article { min-height: 240px; padding: 24px; background: var(--white); border: 1px solid var(--line); display: flex; flex-direction: column; justify-content: space-between; transition: .2s ease; }
.article:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--signal); }
.article-no { align-self: end; color: var(--signal); font: 34px var(--display); } .article-type { color: var(--coral); font: 11px var(--mono); } .article h3 { margin: 22px 0 9px; font: 600 20px/1.35 var(--display); } .article-meta { color: var(--muted); font-size: 12px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: start; }
.prose { max-width: 700px; } .prose h2 { font: 600 28px var(--display); letter-spacing: -.04em; } .prose p { color: var(--muted); font-size: 15px; } .prose ul { color: var(--muted); padding-left: 20px; }
.footer { padding: 42px 0 50px; display: flex; justify-content: space-between; gap: 24px; color: var(--muted); font-size: 12px; }
.footer strong { color: var(--ink); font: 600 16px var(--display); }
.hidden { display: none !important; }
.fade-in { animation: rise .55s both; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes breathe { 0%,100% { transform: rotate(0) scale(1); } 50% { transform: rotate(5deg) scale(1.04); } }
@media (max-width: 860px) {
  .site-shell { width: min(100% - 32px, 680px); }
  .header-inner { min-height: 68px; } .menu-toggle { display: inline-block; } .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 16px 16px; flex-direction: column; align-items: stretch; } .nav.open { display: flex; } .nav a { padding: 12px; }
  .hero { grid-template-columns: 1fr; gap: 34px; padding: 62px 0 58px; } .hero-art { min-height: 280px; border-left: 0; border-top: 1px solid var(--line); } .hero-art:before { width: 280px; height: 280px; }
  .metric-strip { grid-template-columns: repeat(2, 1fr); } .metric { margin: 0; padding: 18px 10px 18px 0; border-bottom: 1px solid var(--line); } .metric:nth-child(2) { border-right: 0; }
  .section { padding: 58px 0; } .section-head { display: block; } .section-note { margin-top: 14px; }
  .project-row { grid-template-columns: 44px 1fr; gap: 12px; } .project-side { grid-column: 2; text-align: left; } .link-arrow { margin-top: 10px; }
  .route-grid, .article-grid, .split { grid-template-columns: 1fr; } .route { margin-right: 0; border-right: 0; } .split { gap: 30px; }
  .footer { display: block; } .footer > * + * { margin-top: 20px; }
}
@media (prefers-reduced-motion: reduce) { *, *:before, *:after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } }