:root {
  --paper: #f1eee5;
  --paper-2: #e8e4da;
  --ink: #151713;
  --ink-soft: #565a50;
  --line: rgba(21, 23, 19, .18);
  --line-strong: rgba(21, 23, 19, .42);
  --acid: #d9ff43;
  --blue: #2366ff;
  --orange: #ff5b35;
  --panel: #171a16;
  --panel-ink: #f5f2e8;
  --shadow: 0 22px 55px rgba(31, 30, 25, .12);
  --radius: 18px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

[data-theme="dark"] {
  --paper: #11130f;
  --paper-2: #191c16;
  --ink: #f2efe5;
  --ink-soft: #adb2a6;
  --line: rgba(242, 239, 229, .16);
  --line-strong: rgba(242, 239, 229, .42);
  --panel: #f1eee5;
  --panel-ink: #151713;
  --shadow: 0 22px 55px rgba(0, 0, 0, .24);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); line-height: 1.55; transition: background .25s, color .25s; }
body::selection { background: var(--acid); color: #151713; }
a { color: inherit; }
button, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(1240px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 1000; padding: 12px 16px; background: var(--ink); color: var(--paper); }
.skip-link:focus { top: 16px; }
.page-grid { position: fixed; inset: 0; pointer-events: none; opacity: .34; background-image: linear-gradient(to right, var(--line) 1px, transparent 1px); background-size: calc((100vw - 48px) / 6) 100%; background-position: 24px 0; z-index: -1; }

.site-header { position: sticky; top: 0; z-index: 40; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(16px); }
.nav { height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { display: block; width: 44px; aspect-ratio: 1; border-radius: 11px; }
[data-theme="dark"] .brand-mark { box-shadow: 0 0 0 1px rgba(241, 238, 229, .28); }
.brand > span:last-child { display: grid; }
.brand b { font-size: 14px; line-height: 1.2; }
.brand small { color: var(--ink-soft); font-size: 11px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { text-decoration: none; font-size: 13px; color: var(--ink-soft); }
.nav-links a:hover { color: var(--ink); }
.theme-toggle { width: 38px; aspect-ratio: 1; border-radius: 50%; border: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; font-size: 18px; }
.theme-toggle:hover { background: var(--ink); color: var(--paper); }

.hero { min-height: min(760px, calc(100vh - 78px)); display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(390px, .8fr); align-items: center; gap: 6vw; padding-block: 80px; }
.signal, .index { font: 700 11px/1.3 var(--mono); letter-spacing: .13em; text-transform: uppercase; }
.signal { display: flex; align-items: center; gap: 10px; margin: 0 0 26px; color: var(--ink-soft); }
.signal span { width: 8px; aspect-ratio: 1; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 5px color-mix(in srgb, var(--orange) 18%, transparent); }
h1, h2 { margin: 0; font-weight: 740; letter-spacing: -.06em; line-height: .98; }
h1 { font-size: clamp(50px, 7.2vw, 104px); max-width: 900px; }
h1 em { color: var(--blue); font-style: normal; }
.lead { max-width: 670px; margin: 30px 0 0; color: var(--ink-soft); font-size: clamp(18px, 2vw, 23px); line-height: 1.45; }
.actions { display: flex; align-items: center; gap: 30px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 30px; min-height: 52px; padding: 0 18px; border: 1px solid var(--line-strong); border-radius: 2px; background: transparent; color: var(--ink); font-weight: 700; text-decoration: none; cursor: pointer; }
.button.primary { background: var(--acid); color: #151713; border-color: #151713; box-shadow: 5px 5px 0 #151713; }
.button.primary:hover { transform: translate(2px, 2px); box-shadow: 3px 3px 0 #151713; }
.button.dark { width: 100%; color: var(--panel-ink); background: var(--panel); border-color: var(--panel); }
.text-link { text-underline-offset: 5px; font-weight: 700; }

.system-card { padding: 22px; border-radius: var(--radius); background: var(--panel); color: var(--panel-ink); box-shadow: var(--shadow); transform: rotate(1.2deg); }
.system-head { display: flex; justify-content: space-between; border-bottom: 1px solid color-mix(in srgb, var(--panel-ink) 18%, transparent); padding-bottom: 14px; font: 700 10px/1 var(--mono); letter-spacing: .12em; }
.system-state { display: flex; align-items: center; gap: 7px; }
.system-state i { width: 7px; aspect-ratio: 1; border-radius: 50%; background: var(--acid); animation: pulse 2s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 7px color-mix(in srgb, var(--acid) 0%, transparent); } 0%,100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--acid) 35%, transparent); } }
.system-map { padding: 23px 0 8px; }
.system-node { position: relative; display: grid; gap: 4px; padding: 15px 18px; border: 1px solid color-mix(in srgb, var(--panel-ink) 24%, transparent); border-radius: 10px; }
.system-node small { font: 700 9px/1 var(--mono); color: color-mix(in srgb, var(--panel-ink) 55%, transparent); letter-spacing: .12em; }
.system-node b { font-size: 15px; }
.system-node span { font-size: 12px; color: color-mix(in srgb, var(--panel-ink) 62%, transparent); }
.system-node.diagnosis { margin-left: 34px; border-color: var(--acid); }
.system-node.outcome { margin-left: 68px; background: var(--blue); color: white; border-color: var(--blue); }
.trace { height: 25px; margin-left: 28px; display: flex; flex-direction: column; justify-content: space-evenly; border-left: 1px solid color-mix(in srgb, var(--panel-ink) 30%, transparent); }
.trace-two { margin-left: 62px; }
.trace i { display: block; width: 14px; height: 1px; background: color-mix(in srgb, var(--panel-ink) 30%, transparent); }
.system-note { margin: 18px 0 2px; color: color-mix(in srgb, var(--panel-ink) 60%, transparent); font: 11px/1.5 var(--mono); }

.proof-band { border-block: 1px solid var(--line); background: color-mix(in srgb, var(--paper-2) 74%, transparent); }
.proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.proof-item { min-height: 150px; padding: 28px 24px; border-left: 1px solid var(--line); display: flex; flex-direction: column; justify-content: space-between; }
.proof-item:last-child { border-right: 1px solid var(--line); }
.proof-item b { font: 700 clamp(32px, 4vw, 52px)/1 var(--mono); letter-spacing: -.06em; }
.proof-item span { max-width: 190px; color: var(--ink-soft); font-size: 12px; }

.section { padding-block: clamp(92px, 11vw, 150px); border-bottom: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: 1fr 3fr; gap: 24px; margin-bottom: 64px; }
.index { color: var(--blue); margin: 8px 0 0; }
.section-heading h2, .experience-intro h2, .profile-grid h2, .contact-copy h2 { font-size: clamp(42px, 5.7vw, 77px); }
.section-heading p:not(.index) { max-width: 570px; margin: 24px 0 0; color: var(--ink-soft); font-size: 17px; }

.diagnostic-lab { display: grid; grid-template-columns: .92fr 1.58fr; min-height: 460px; border: 1px solid var(--line-strong); background: var(--paper); box-shadow: 9px 9px 0 var(--ink); }
.symptom-list { border-right: 1px solid var(--line-strong); }
.symptom-button { width: 100%; min-height: 92px; display: grid; grid-template-columns: 38px 1fr 20px; align-items: center; gap: 12px; padding: 16px 20px; text-align: left; color: var(--ink); border: 0; border-bottom: 1px solid var(--line); background: transparent; cursor: pointer; }
.symptom-button:last-child { border-bottom: 0; }
.symptom-button span:first-child { font: 700 10px/1 var(--mono); color: var(--ink-soft); }
.symptom-button b { font-size: clamp(14px, 1.5vw, 18px); }
.symptom-button span:last-child { font-size: 20px; }
.symptom-button:hover, .symptom-button.active { background: var(--ink); color: var(--paper); }
.symptom-button.active span { color: var(--acid); }
.diagnostic-result { padding: clamp(28px, 5vw, 64px); outline: none; }
.result-kicker { margin: 0 0 26px; color: var(--orange); font: 700 11px/1 var(--mono); letter-spacing: .12em; }
.result-signal { max-width: 720px; margin: 0 0 35px; font-size: clamp(23px, 3vw, 39px); font-weight: 680; letter-spacing: -.035em; line-height: 1.18; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; }
.result-block { padding-top: 15px; border-top: 1px solid var(--line); }
.result-block small { font: 700 10px/1 var(--mono); letter-spacing: .1em; color: var(--ink-soft); }
.result-block p { margin: 10px 0 0; }
.evidence-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.evidence-chips span { border: 1px solid var(--line); padding: 5px 8px; font: 10px/1.2 var(--mono); }
.result-link { display: inline-flex; margin-top: 30px; font-weight: 750; text-underline-offset: 5px; }

.method-section { background: var(--ink); color: var(--paper); }
.method-section .index { color: var(--acid); }
.method-section .section-heading p:not(.index) { color: color-mix(in srgb, var(--paper) 60%, transparent); }
.method-track { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid color-mix(in srgb, var(--paper) 20%, transparent); }
.method-step { min-height: 290px; padding: 24px; border-left: 1px solid color-mix(in srgb, var(--paper) 20%, transparent); display: flex; flex-direction: column; }
.method-step:last-child { border-right: 1px solid color-mix(in srgb, var(--paper) 20%, transparent); }
.method-step .num { color: var(--acid); font: 700 11px/1 var(--mono); }
.method-step h3 { margin: auto 0 12px; font-size: 30px; letter-spacing: -.04em; }
.method-step p { margin: 0; color: color-mix(in srgb, var(--paper) 60%, transparent); font-size: 13px; }

.view-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.segmented { display: flex; border: 1px solid var(--line-strong); padding: 4px; }
.segmented button { border: 0; background: transparent; padding: 9px 14px; color: var(--ink-soft); cursor: pointer; font-size: 12px; font-weight: 700; }
.segmented button.active { background: var(--ink); color: var(--paper); }
.view-toolbar p { margin: 0; color: var(--ink-soft); font-size: 12px; }
.project-list { border-top: 1px solid var(--line-strong); }
.project { border-bottom: 1px solid var(--line-strong); }
.project-summary { width: 100%; display: grid; grid-template-columns: 72px 1.45fr 1fr 42px; align-items: center; gap: 20px; padding: 28px 0; border: 0; background: transparent; color: var(--ink); text-align: left; cursor: pointer; }
.project-number { font: 700 11px/1 var(--mono); color: var(--blue); }
.project-title { font-size: clamp(24px, 3vw, 39px); letter-spacing: -.04em; }
.project-sector { color: var(--ink-soft); font-size: 13px; }
.project-toggle { display: grid; place-items: center; width: 38px; aspect-ratio: 1; border: 1px solid var(--line); border-radius: 50%; font-size: 22px; transition: transform .2s; }
.project.open .project-toggle { transform: rotate(45deg); background: var(--acid); color: #151713; }
.project-detail { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .35s ease; }
.project.open .project-detail { grid-template-rows: 1fr; }
.project-detail-inner { overflow: hidden; }
.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin: 0 0 28px 72px; }
.detail-block { padding: 24px; background: var(--paper-2); }
.detail-block small { font: 700 10px/1 var(--mono); color: var(--blue); letter-spacing: .1em; }
.detail-block p { margin: 14px 0 0; font-size: 14px; }
.stack { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.stack span { padding: 5px 8px; border: 1px solid var(--line); background: var(--paper); font: 10px/1.2 var(--mono); }
.project-links { grid-column: 1 / -1; display: flex; gap: 20px; padding: 15px 24px; background: var(--paper); }
.project-links a { font-size: 12px; font-weight: 700; text-underline-offset: 4px; }

.experience-section { background: var(--paper-2); }
.experience-grid { display: grid; grid-template-columns: 1fr 1.35fr; gap: 8vw; }
.experience-intro .index { margin-bottom: 28px; }
.experience-intro p:last-child { max-width: 470px; color: var(--ink-soft); margin-top: 28px; }
.career { border-top: 1px solid var(--line-strong); }
.career-item { display: grid; grid-template-columns: 95px 1fr; gap: 22px; padding: 28px 0; border-bottom: 1px solid var(--line-strong); }
.career-period { font: 700 10px/1.4 var(--mono); color: var(--blue); text-transform: uppercase; }
.career-item h3 { margin: 0; font-size: 21px; letter-spacing: -.025em; }
.career-role { margin: 3px 0 13px; color: var(--orange); font-size: 13px; font-weight: 700; }
.career-summary { margin: 0; color: var(--ink-soft); font-size: 14px; }

.profile-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8vw; }
.profile-grid .index { margin-bottom: 28px; }
.profile-copy { padding-top: 36px; }
.profile-copy p { color: var(--ink-soft); }
.profile-copy .large { color: var(--ink); font-size: clamp(26px, 3vw, 40px); line-height: 1.2; letter-spacing: -.04em; margin-top: 0; }
.principles { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; }
.principles span { padding: 8px 10px; border: 1px solid var(--line-strong); font: 700 10px/1 var(--mono); text-transform: uppercase; }

.contact-section { background: var(--blue); color: white; }
.contact-card { display: grid; grid-template-columns: 1fr 1fr; gap: 7vw; padding: clamp(32px, 6vw, 80px); background: var(--acid); color: #151713; border: 1px solid #151713; box-shadow: 12px 12px 0 #151713; }
.contact-copy .index { color: #151713; margin-bottom: 28px; }
.contact-copy p:not(.index) { max-width: 480px; }
.direct-links { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 35px; }
.direct-links a { font-weight: 700; font-size: 13px; text-underline-offset: 4px; }
.brief-builder { display: grid; gap: 17px; padding: 26px; background: #f7f4ea; border: 1px solid #151713; }
.brief-builder label { display: grid; gap: 7px; font: 700 10px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.brief-builder select, .brief-builder textarea { width: 100%; border: 1px solid rgba(21, 23, 19, .3); border-radius: 0; padding: 12px; background: white; color: #151713; outline: 0; text-transform: none; letter-spacing: normal; }
.brief-builder select:focus, .brief-builder textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 2px rgba(35, 102, 255, .18); }
.brief-builder textarea { resize: vertical; }
.form-note { margin: -8px 0 0; color: #5b5f55; font-size: 10px; }

.site-footer { padding: 34px 0; }
.footer-grid { display: grid; grid-template-columns: 1fr 2fr auto; align-items: end; gap: 24px; }
.footer-grid > div { display: grid; }
.footer-grid b { font-size: 13px; }
.footer-grid span, .footer-grid p, .footer-grid a { color: var(--ink-soft); font-size: 11px; }
.footer-grid p { margin: 0; text-align: center; }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } .system-state i { animation: none; } }

@media (max-width: 900px) {
  .shell { width: min(100% - 30px, 1240px); }
  .page-grid { background-size: calc((100vw - 30px) / 3) 100%; background-position: 15px 0; }
  .nav-links { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding-block: 64px; }
  .system-card { max-width: 560px; transform: none; }
  .proof-grid { grid-template-columns: 1fr 1fr; }
  .proof-item:nth-child(2) { border-right: 1px solid var(--line); }
  .proof-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .section-heading { grid-template-columns: 1fr; }
  .diagnostic-lab, .experience-grid, .profile-grid, .contact-card { grid-template-columns: 1fr; }
  .symptom-list { border-right: 0; border-bottom: 1px solid var(--line-strong); display: grid; grid-template-columns: 1fr 1fr; }
  .symptom-button:nth-child(odd) { border-right: 1px solid var(--line); }
  .method-track { grid-template-columns: 1fr 1fr; }
  .method-step:nth-child(-n+2) { border-bottom: 1px solid color-mix(in srgb, var(--paper) 20%, transparent); }
  .detail-grid { margin-left: 0; }
}

@media (max-width: 620px) {
  .nav { height: 68px; }
  .brand small { display: none; }
  h1 { font-size: clamp(43px, 14vw, 68px); }
  .actions { align-items: flex-start; flex-direction: column; gap: 20px; }
  .proof-item { min-height: 125px; padding: 22px 15px; }
  .section { padding-block: 82px; }
  .section-heading { margin-bottom: 42px; }
  .symptom-list { grid-template-columns: 1fr; }
  .symptom-button:nth-child(odd) { border-right: 0; }
  .result-grid, .method-track, .detail-grid { grid-template-columns: 1fr; }
  .method-step { min-height: 220px; border-right: 1px solid color-mix(in srgb, var(--paper) 20%, transparent); border-bottom: 1px solid color-mix(in srgb, var(--paper) 20%, transparent); }
  .view-toolbar { align-items: flex-start; flex-direction: column; }
  .view-toolbar p { display: none; }
  .project-summary { grid-template-columns: 36px 1fr 38px; gap: 10px; }
  .project-sector { grid-column: 2; grid-row: 2; }
  .project-toggle { grid-column: 3; grid-row: 1 / 3; }
  .detail-grid { margin-bottom: 20px; }
  .project-links { flex-wrap: wrap; }
  .contact-card { padding: 25px; box-shadow: 7px 7px 0 #151713; }
  .brief-builder { padding: 18px; }
  .footer-grid { grid-template-columns: 1fr; align-items: start; }
  .footer-grid p { text-align: left; }
}