:root {
  --bg: #090d10;
  --surface: #0e1418;
  --surface-2: #11191e;
  --ink: #ecf2f3;
  --muted: #91a0a7;
  --line: rgba(220, 237, 240, .14);
  --accent: #70e1cf;
  --accent-2: #5ea8ff;
  --shell: min(1180px, calc(100vw - 48px));
  --sans: "Segoe UI", Inter, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.6; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.shell { width: var(--shell); margin-inline: auto; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; background: var(--ink); color: var(--bg); padding: 10px 14px; }
.skip-link:focus { top: 16px; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 30; border-bottom: 1px solid transparent; transition: .3s ease; }
.site-header.scrolled { background: rgba(9, 13, 16, .88); border-color: var(--line); backdrop-filter: blur(18px); }
.nav-wrap { height: 82px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; gap: 12px; align-items: center; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--accent); color: var(--accent); font: 500 .78rem var(--mono); }
.brand-copy { display: grid; line-height: 1.25; }
.brand-copy strong { font-size: .92rem; letter-spacing: .01em; }
.brand-copy span { color: var(--muted); font: .75rem var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { color: #b9c4c8; font-size: .77rem; font-weight: 600; transition: color .2s; }
.main-nav a:hover, .main-nav a:focus-visible { color: var(--accent); }
.main-nav .nav-contact { border: 1px solid var(--line); padding: 9px 14px; }
.menu-toggle { display: none; background: none; border: 0; padding: 12px; }
.menu-toggle span { display: block; width: 24px; height: 1px; background: var(--ink); margin: 6px 0; }

.hero { min-height: 760px; height: 100svh; max-height: 940px; padding-top: 150px; display: grid; grid-template-columns: 1.3fr .7fr; align-items: center; gap: 70px; position: relative; }
.hero::before { content: ""; position: absolute; width: 620px; height: 620px; left: -350px; top: 60px; background: radial-gradient(circle, rgba(94,168,255,.09), transparent 66%); pointer-events: none; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 28px; color: var(--accent); font: 500 .75rem var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.eyebrow span { color: var(--muted); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 840px; font-size: clamp(3.1rem, 5.7vw, 5.8rem); line-height: 1.01; letter-spacing: -.055em; font-weight: 500; margin-bottom: 34px; }
h1 em, h2 em { color: var(--accent); font-style: normal; }
.hero-lead { max-width: 690px; color: #aab6ba; font-size: 1.08rem; line-height: 1.8; }
.hero-actions { display: flex; gap: 12px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 34px; padding: 14px 18px; border: 1px solid var(--line); font-size: .8rem; font-weight: 600; transition: .25s; }
.button-primary { color: #07110f; background: var(--accent); border-color: var(--accent); }
.button-primary:hover { background: #91ede0; }
.button-quiet:hover { border-color: var(--accent); color: var(--accent); }

.hero-system { border: 1px solid var(--line); background: linear-gradient(145deg, rgba(17,25,30,.86), rgba(9,13,16,.4)); padding: 18px; }
.system-head { display: flex; justify-content: space-between; color: var(--muted); font: .75rem var(--mono); letter-spacing: .08em; }
.live-dot { color: var(--accent); }
.live-dot::before { content: ""; display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); margin-right: 7px; box-shadow: 0 0 10px var(--accent); }
.system-orbit { height: 360px; position: relative; display: grid; place-items: center; }
.orbit { position: absolute; border: 1px solid var(--line); border-radius: 50%; }
.orbit-a { width: 260px; height: 260px; }
.orbit-b { width: 175px; height: 175px; border-style: dashed; animation: rotate 18s linear infinite; }
.system-core { width: 110px; height: 110px; border-radius: 50%; display: grid; align-content: center; justify-items: center; background: rgba(112,225,207,.08); border: 1px solid rgba(112,225,207,.6); box-shadow: 0 0 70px rgba(112,225,207,.1); }
.system-core small { color: var(--accent); font: .75rem var(--mono); }
.system-core strong { font: 500 .75rem var(--mono); letter-spacing: .1em; }
.node { position: absolute; background: var(--bg); color: #aebbc0; padding: 5px 8px; font: .55rem var(--mono); letter-spacing: .08em; }
.n1 { top: 46px; left: 42%; }.n2 { top: 48%; right: 4px; }.n3 { bottom: 43px; left: 41%; }.n4 { top: 48%; left: 0; }
.hero-system > p { color: var(--muted); font-size: .77rem; padding: 0 8px 4px; margin: 0; }
@keyframes rotate { to { transform: rotate(360deg); } }

.signal-strip { border-block: 1px solid var(--line); overflow: hidden; }
.signal-track { min-height: 58px; display: flex; align-items: center; justify-content: center; gap: 30px; padding: 0 24px; white-space: nowrap; color: #829198; font: .75rem var(--mono); letter-spacing: .12em; }
.signal-track i { width: 4px; height: 4px; border: 1px solid var(--accent); transform: rotate(45deg); }

.section { padding-block: 140px; scroll-margin-top: 70px; }
.section-intro { display: grid; grid-template-columns: 1.05fr .95fr; column-gap: 10%; }
.section-intro .eyebrow { grid-column: 1 / -1; }
h2 { font-size: clamp(2.2rem, 4vw, 4.1rem); line-height: 1.1; letter-spacing: -.045em; font-weight: 500; margin-bottom: 28px; }
.section-intro > p:last-child, .section-heading > p { color: var(--muted); font-size: 1rem; line-height: 1.8; max-width: 540px; }
.adaptive-flow { list-style: none; margin: 84px 0 0; padding: 0; display: grid; grid-template-columns: repeat(6, 1fr); border-block: 1px solid var(--line); }
.adaptive-flow li { min-height: 190px; padding: 20px 16px; border-right: 1px solid var(--line); position: relative; display: flex; flex-direction: column; justify-content: flex-end; }
.adaptive-flow li:last-child { border-right: 0; background: rgba(112,225,207,.04); }
.adaptive-flow li::after { content: "→"; color: var(--accent); position: absolute; top: 18px; right: -8px; z-index: 2; background: var(--bg); font: 1rem var(--mono); }
.adaptive-flow li:last-child::after { content: "↻"; right: 14px; background: transparent; }
.adaptive-flow span { position: absolute; top: 18px; left: 16px; color: #69777d; font: .75rem var(--mono); }
.adaptive-flow strong { font-size: .88rem; margin-bottom: 8px; }
.adaptive-flow small { color: var(--muted); font-size: .75rem; line-height: 1.5; }

.section-projects { background: var(--surface); border-block: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: 1.1fr .7fr; gap: 12%; align-items: end; margin-bottom: 62px; }
.section-heading h2 { margin: 0; }
.portfolio-map { display: grid; grid-template-columns: repeat(4, 1fr); margin-bottom: 34px; border: 1px solid var(--line); }
.portfolio-map > div { min-height: 118px; padding: 17px; border-right: 1px solid var(--line); display: flex; flex-direction: column; justify-content: flex-end; }
.portfolio-map > div:last-child { border-right: 0; }
.portfolio-map span { color: var(--accent); font: .75rem var(--mono); }
.portfolio-map strong { margin-top: 18px; font-size: .76rem; }
.portfolio-map small { color: var(--muted); font-size: .75rem; margin-top: 3px; }
.portfolio-map .portfolio-archive span, .portfolio-map .portfolio-archive strong { color: #849198; }
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.project-group { grid-column: 1 / -1; min-height: 110px; display: grid; grid-template-columns: 60px 1fr 1fr; align-items: center; gap: 20px; padding: 20px 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #0a1013; }
.project-group > span { color: var(--accent); font: 1rem var(--mono); }
.project-group > strong { font-size: 1.05rem; font-weight: 500; }
.project-group > small { color: var(--muted); font-size: .75rem; text-align: right; }
.project-group-archive > span, .project-group-archive > strong { color: #849198; }
.project-card { min-height: 440px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.012); transition: .3s ease; }
.project-card:hover { background: rgba(112,225,207,.035); transform: translateY(-3px); }
.project-card-archive { background: rgba(255,255,255,.006); }
.project-card-archive h3, .project-card-archive > p, .project-card-archive dd { color: #819097; }
.archive-note { padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; align-content: center; background: rgba(255,255,255,.006); }
.archive-note span { color: #6f7d83; font: .75rem var(--mono); letter-spacing: .08em; }
.archive-note p { max-width: 430px; color: #819097; font-size: .78rem; margin: 16px 0 0; }
.card-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; color: #718087; font: .75rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.status { color: var(--accent); border: 1px solid rgba(112,225,207,.22); padding: 4px 7px; }
.status-archive { color: #849198; border-color: var(--line); }
.project-card h3 { margin: 78px 0 20px; font-size: 1.65rem; font-weight: 500; letter-spacing: -.025em; }
.project-card h3 span { color: var(--muted); font-size: .95rem; }
.project-card > p { min-height: 78px; color: #aeb9bd; max-width: 550px; }
.project-card dl { margin: 32px 0 0; border-top: 1px solid var(--line); }
.project-card dl div { display: grid; grid-template-columns: 80px 1fr; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.project-card dt { color: #6f7d83; font: .75rem var(--mono); text-transform: uppercase; }
.project-card dd { margin: 0; color: #98a6ac; font-size: .75rem; line-height: 1.6; }

.architecture { margin-top: 70px; border: 1px solid var(--line); background: var(--surface); }
.arch-rail { display: grid; grid-template-columns: repeat(7, 1fr); }
.arch-step { min-height: 180px; padding: 18px 14px; border-right: 1px solid var(--line); display: flex; flex-direction: column; justify-content: flex-end; position: relative; }
.arch-step:last-child { border-right: 0; }
.arch-step::after { content: ""; position: absolute; top: 45px; left: 28px; right: -1px; height: 1px; background: var(--line); }
.arch-step span { position: absolute; top: 20px; color: #6d7b81; font: .75rem var(--mono); }
.arch-step strong { font-size: .82rem; }.arch-step small { color: var(--muted); font-size: .75rem; margin-top: 7px; }
.arch-guard { background: rgba(112,225,207,.05); box-shadow: inset 0 2px var(--accent); }
.arch-guard strong { color: var(--accent); }
.arch-note { display: grid; grid-template-columns: 1fr 4fr; gap: 30px; border-top: 1px solid var(--line); padding: 24px; }
.arch-note span { color: var(--accent); font: .75rem var(--mono); letter-spacing: .1em; }
.arch-note p { color: var(--muted); font-size: .8rem; max-width: 700px; margin: 0; }

.collaboration { background: var(--accent); color: #07100f; }
.collaboration .eyebrow { color: #274e49; }
.collaboration-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12%; }
.collaboration h2 { max-width: 600px; }
.collaboration-copy > p { font-size: 1.05rem; line-height: 1.8; }
.collaboration-copy ul { list-style: none; padding: 0; margin: 44px 0; border-top: 1px solid rgba(7,16,15,.22); }
.collaboration-copy li { display: flex; gap: 22px; padding: 15px 0; border-bottom: 1px solid rgba(7,16,15,.22); font-weight: 600; }
.collaboration-copy li span { font: .75rem var(--mono); opacity: .55; }
.text-link { display: inline-flex; align-items: center; gap: 18px; padding-bottom: 5px; border-bottom: 1px solid; font-size: .82rem; font-weight: 700; }

.author-section { display: grid; grid-template-columns: .75fr 1.25fr; align-items: center; min-height: 650px; }
.author-index { width: 290px; height: 290px; display: grid; place-items: center; border: 1px solid var(--line); color: var(--accent); font: 500 5rem var(--mono); position: relative; }
.author-index::before, .author-index::after { content: ""; position: absolute; background: var(--line); }
.author-index::before { width: 120%; height: 1px; }.author-index::after { height: 120%; width: 1px; }
.author-copy { max-width: 650px; }
.author-lead { color: var(--ink); font-size: 1.25rem; line-height: 1.6; }
.author-copy > p:last-child { color: var(--muted); line-height: 1.8; }

.contact-section { background: var(--surface-2); border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 10%; align-items: end; }
.contact-list { margin: 0; border-top: 1px solid var(--line); font-style: normal; }
.contact-list > div { display: grid; grid-template-columns: 92px 1fr; gap: 18px; align-items: center; padding: 17px 0; border-bottom: 1px solid var(--line); }
.contact-list span { color: #718087; font: .75rem var(--mono); text-transform: uppercase; letter-spacing: .07em; }
.contact-list a, .contact-list p { color: var(--ink); font-size: .82rem; line-height: 1.5; margin: 0; overflow-wrap: anywhere; }
.contact-list a { transition: color .2s ease; }
.contact-list a:hover, .contact-list a:focus-visible { color: var(--accent); }
.site-footer { border-top: 1px solid var(--line); color: #718087; font: .75rem var(--mono); }
.site-footer .shell { min-height: 90px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.site-footer p { margin: 0; }

.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.js .reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } .orbit-b { animation: none; } }

@media (max-width: 980px) {
  :root { --shell: min(100% - 36px, 760px); }
  .menu-toggle { display: block; z-index: 2; }
  .main-nav { display: none; position: absolute; inset: 82px 0 auto; background: rgba(9,13,16,.98); border-bottom: 1px solid var(--line); padding: 24px; flex-direction: column; align-items: flex-start; gap: 18px; }
  .main-nav.open { display: flex; }
  .hero { height: auto; min-height: 0; grid-template-columns: 1fr; padding-block: 150px 90px; }
  .hero-system { max-width: 520px; }
  .signal-track { justify-content: flex-start; overflow: hidden; }
  .section { padding-block: 100px; }
  .section-intro, .section-heading, .collaboration-grid, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .adaptive-flow { grid-template-columns: repeat(3, 1fr); }
  .adaptive-flow li:nth-child(3) { border-right: 0; }
  .adaptive-flow li:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
  .project-grid { grid-template-columns: 1fr; }
  .portfolio-map { grid-template-columns: 1fr 1fr; }
  .portfolio-map > div:nth-child(2) { border-right: 0; }
  .portfolio-map > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .project-group { grid-template-columns: 48px 1fr; }
  .project-group > small { grid-column: 2; text-align: left; }
  .arch-rail { grid-template-columns: repeat(4, 1fr); }
  .arch-step:nth-child(4) { border-right: 0; }
  .arch-step:nth-child(-n+4) { border-bottom: 1px solid var(--line); }
  .author-section { grid-template-columns: .75fr 1.25fr; gap: 50px; }
  .author-index { width: 210px; height: 210px; font-size: 3.5rem; }
}

@media (max-width: 620px) {
  :root { --shell: calc(100% - 28px); }
  .nav-wrap { height: 70px; }.brand-copy span { display: none; }
  .main-nav { top: 70px; }
  .hero { padding-block: 122px 70px; gap: 52px; }
  h1 { font-size: clamp(2.5rem, 12vw, 3.7rem); }
  h2 { font-size: 2.3rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-system { padding: 14px; }.system-orbit { height: 310px; }.orbit-a { width: 230px; height: 230px; }.orbit-b { width: 150px; height: 150px; }
  .section { padding-block: 78px; }
  .adaptive-flow { grid-template-columns: 1fr 1fr; margin-top: 52px; }
  .adaptive-flow li { min-height: 155px; border-bottom: 1px solid var(--line); }
  .adaptive-flow li:nth-child(2n) { border-right: 0; }
  .project-card { padding: 22px; min-height: 0; }.project-card h3 { margin-top: 55px; }.project-card > p { min-height: 0; }
  .portfolio-map { grid-template-columns: 1fr; }
  .portfolio-map > div { min-height: 104px; border-right: 0; border-bottom: 1px solid var(--line); }
  .portfolio-map > div:last-child { border-bottom: 0; }
  .project-group { grid-template-columns: 36px 1fr; padding: 20px; }
  .card-top { align-items: flex-start; flex-direction: column; }
  .arch-rail { grid-template-columns: 1fr 1fr; }
  .arch-step { min-height: 145px; border-bottom: 1px solid var(--line); }
  .arch-step:nth-child(2n) { border-right: 0; }.arch-step:nth-child(7) { border-bottom: 0; }
  .arch-note { grid-template-columns: 1fr; }
  .author-section { grid-template-columns: 1fr; gap: 60px; }
  .author-index { width: 170px; height: 170px; font-size: 3rem; }
  .site-footer .shell { padding: 25px 0; align-items: flex-start; flex-direction: column; }
}