:root {
  color-scheme: light;
  --canvas: #f7f4ec;
  --surface: #fffdf7;
  --surface-strong: #ffffff;
  --ink: #22272e;
  --muted: #5d6772;
  --navy: #10233a;
  --teal: #2d7677;
  --blue: #2b5c82;
  --teal-soft: #e3f0ed;
  --blue-soft: #e9f0f6;
  --amber: #93620f;
  --amber-soft: #fbf1d5;
  --green: #2e6e53;
  --green-soft: #e4f0e8;
  --red: #8b3c35;
  --red-soft: #f5e5e2;
  --line: #d8d6ce;
  --line-strong: #bfc4c7;
  --shadow: 0 22px 60px rgba(16,35,58,.08);
  --radius: 8px;
  --radius-sm: 5px;
  --max: 1180px;
  --reading: 740px;
  --font: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--canvas); }
body { margin: 0; background: var(--canvas); color: var(--ink); font-family: var(--font); font-size: 17px; line-height: 1.62; text-rendering: optimizeLegibility; }
img, svg { max-width: 100%; height: auto; }
a { color: var(--blue); text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:hover { color: var(--teal); }
button, a, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #0b6f72; outline-offset: 3px; border-radius: 3px; }
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 1000; transform: translateY(-180%); background: var(--navy); color: #fff; padding: 10px 14px; border-radius: 4px; }
.skip-link:focus { transform: translateY(0); }
.shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.narrow { width: min(calc(100% - 48px), var(--reading)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--canvas) 94%, transparent); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(191,196,199,.6); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--navy); text-decoration: none; min-width: 0; }
.brand-mark { width: 38px; height: 38px; border: 1px solid var(--navy); border-radius: 50%; display: grid; place-items: center; font: 700 12px/1 var(--mono); letter-spacing: .08em; }
.brand-text { display: grid; line-height: 1.2; }
.brand-text strong { font-size: 16px; letter-spacing: -.01em; }
.brand-text span { margin-top: 4px; color: var(--muted); font-size: 12px; }
.desktop-nav { display: flex; align-items: center; gap: 6px; }
.desktop-nav a { color: var(--ink); text-decoration: none; font-size: 14px; font-weight: 600; padding: 10px 12px; border-radius: 4px; }
.desktop-nav a:hover, .desktop-nav a[aria-current="page"] { background: var(--surface); color: var(--navy); }
.mobile-nav { display: none; position: relative; }
.mobile-nav summary { list-style: none; display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 14px; font-weight: 700; padding: 12px; }
.mobile-nav summary::-webkit-details-marker { display: none; }
.menu-lines, .menu-lines::before, .menu-lines::after { display: block; width: 20px; height: 1px; background: var(--navy); content: ""; position: relative; }
.menu-lines::before { position: absolute; top: -6px; }
.menu-lines::after { position: absolute; top: 6px; }
.mobile-nav nav { position: absolute; right: 0; top: 52px; min-width: 220px; padding: 8px; display: grid; background: var(--surface-strong); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.mobile-nav nav a { padding: 12px; color: var(--ink); text-decoration: none; font-weight: 650; border-radius: 4px; }
.mobile-nav nav a:hover, .mobile-nav nav a[aria-current="page"] { background: var(--teal-soft); color: var(--navy); }
main { overflow: clip; }
.hero { padding: 88px 0 64px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(330px, .8fr); gap: 72px; align-items: center; }
.eyebrow, .kicker, .meta-label { display: inline-flex; align-items: center; gap: 8px; font: 700 12px/1.25 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--teal); }
.eyebrow::before, .kicker::before { content: ""; width: 26px; height: 1px; background: currentColor; }
h1, h2, h3, h4 { color: var(--navy); margin: 0; line-height: 1.08; letter-spacing: -.038em; text-wrap: balance; }
h1 { font-size: clamp(46px, 6.1vw, 76px); max-width: 940px; }
h2 { font-size: clamp(32px, 4.3vw, 50px); }
h3 { font-size: clamp(22px, 2.5vw, 30px); letter-spacing: -.026em; }
h4 { font-size: 19px; letter-spacing: -.015em; }
p { margin: 0 0 1em; }
.hero h1 { margin-top: 22px; }
.hero-lead { margin-top: 26px; max-width: 760px; color: #3d4852; font-size: clamp(19px, 2vw, 23px); line-height: 1.52; }
.hero-actions, .action-row { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 12px 18px; border-radius: 5px; border: 1px solid var(--navy); text-decoration: none; font-weight: 750; font-size: 15px; transition: transform .16s ease, background .16s ease, color .16s ease; }
.button:hover { transform: translateY(-1px); }
.button.primary { background: var(--navy); color: white; }
.button.primary:hover { background: var(--teal); border-color: var(--teal); }
.button.secondary { background: transparent; color: var(--navy); }
.button.secondary:hover { background: var(--surface); color: var(--navy); }
.icon { flex: 0 0 auto; }
.microcopy { margin-top: 20px; color: var(--muted); font-size: 14px; }
.portrait-card { position: relative; max-width: 430px; margin-left: auto; }
.portrait-wrap { aspect-ratio: 4 / 5; overflow: hidden; border-radius: var(--radius); background: #dde3e6; box-shadow: var(--shadow); }
.portrait-wrap img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 23%; filter: saturate(.86) contrast(.98); }
.portrait-caption { width: calc(100% - 34px); margin: -34px auto 0; position: relative; background: var(--surface-strong); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 20px; box-shadow: 0 12px 35px rgba(16,35,58,.09); }
.portrait-caption strong { display: block; color: var(--navy); font-size: 15px; }
.portrait-caption span { display: block; color: var(--muted); margin-top: 4px; font-size: 13px; }
.proof-strip { padding: 0 0 68px; }
.proof-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); border-block: 1px solid var(--line); }
.proof-item { min-height: 116px; padding: 24px 24px 22px 0; display: flex; flex-direction: column; justify-content: space-between; }
.proof-item + .proof-item { border-left: 1px solid var(--line); padding-left: 24px; }
.proof-item .number { color: var(--teal); font: 700 12px var(--mono); letter-spacing: .08em; }
.proof-item strong { margin-top: 14px; color: var(--navy); font-size: 15px; line-height: 1.38; }
.section { padding: 86px 0; }
.section.tinted { background: var(--surface); border-block: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 72px; align-items: end; margin-bottom: 46px; }
.section-heading p { color: var(--muted); font-size: 18px; margin: 0; max-width: 690px; }
.section-heading .kicker { margin-bottom: 14px; }
.section-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; font-weight: 750; text-decoration: none; }
.project-list { display: grid; gap: 22px; }
.project-card { position: relative; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr); gap: 44px; padding: 34px; background: var(--surface-strong); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: inherit; transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease; }
.project-card:hover { color: inherit; border-color: var(--teal); transform: translateY(-2px); box-shadow: var(--shadow); }
.project-card.reverse .project-visual { order: -1; }
.status { display: inline-flex; align-items: center; gap: 8px; width: fit-content; font: 700 11px/1.3 var(--mono); letter-spacing: .055em; text-transform: uppercase; padding: 7px 9px; border-radius: 4px; }
.status.implemented { background: var(--green-soft); color: var(--green); }
.status.experimental { background: var(--amber-soft); color: var(--amber); }
.status.note { background: var(--blue-soft); color: var(--blue); }
.status.archived { background: var(--red-soft); color: var(--red); }
.project-card h2, .project-card h3 { margin-top: 20px; font-size: clamp(22px, 2.5vw, 30px); letter-spacing: -.026em; }
.project-card p { color: var(--muted); margin-top: 16px; max-width: 620px; }
.evidence-line { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px 14px; color: var(--navy); font: 650 12px/1.4 var(--mono); }
.evidence-line span { display: inline-flex; align-items: center; gap: 6px; }
.card-cta { margin-top: 28px; display: inline-flex; align-items: center; gap: 9px; color: var(--blue); font-weight: 780; }
.project-visual { min-width: 0; display: grid; align-items: center; }
.project-visual img, .project-visual svg { width: 100%; border-radius: 5px; }
.visual-panel { padding: 18px; background: var(--canvas); border: 1px solid var(--line); border-radius: 6px; }
.focus-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.focus-card { padding: 26px 24px; border-top: 2px solid var(--teal); background: var(--surface-strong); }
.focus-card .index { font: 700 11px var(--mono); color: var(--teal); letter-spacing: .08em; }
.focus-card h3 { margin-top: 18px; font-size: 21px; }
.focus-card p { color: var(--muted); margin-top: 12px; font-size: 15px; }
.about-split { display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; align-items: start; }
.about-photo { position: sticky; top: 110px; }
.about-photo img { width: 100%; border-radius: var(--radius); }
.about-copy { max-width: 760px; }
.about-copy p { font-size: 18px; color: #3f4952; }
.principles { margin-top: 34px; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.principle { background: var(--surface-strong); padding: 20px; display: grid; grid-template-columns: 42px 1fr; gap: 14px; }
.principle b { color: var(--teal); font: 700 12px var(--mono); }
.principle strong { color: var(--navy); }
.cta-band { padding: 72px 0; background: var(--navy); color: #edf3f3; }
.cta-band .grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 50px; align-items: center; }
.cta-band h2 { color: #fff; max-width: 760px; }
.cta-band p { color: #c9d2d7; margin-top: 18px; max-width: 720px; }
.cta-band .button.primary { background: #fff; color: var(--navy); border-color: #fff; }
.page-hero { padding: 72px 0 48px; }
.page-hero .breadcrumbs { margin-bottom: 36px; }
.page-hero h1 { font-size: clamp(42px, 5.4vw, 68px); }
.page-deck { max-width: 860px; color: #44515a; font-size: clamp(19px, 2.1vw, 24px); margin-top: 24px; }
.page-meta { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 10px 22px; color: var(--muted); font: 600 12px/1.45 var(--mono); }
.breadcrumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; color: var(--muted); font: 650 12px/1.4 var(--mono); }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--teal); }
.breadcrumb-sep { color: var(--line-strong); }
.notice { margin: 28px 0; padding: 20px 22px; border-left: 3px solid var(--teal); background: var(--teal-soft); color: #284c4d; }
.notice.warning { border-left-color: var(--amber); background: var(--amber-soft); color: #644918; }
.notice strong { color: inherit; }
.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 240px; gap: 72px; align-items: start; }
.article { max-width: var(--reading); }
.article > * + * { margin-top: 1.2em; }
.article h2 { font-size: clamp(29px, 3vw, 39px); margin-top: 2.2em; }
.article h3 { font-size: 24px; margin-top: 1.8em; }
.article p, .article li { color: #3c4750; }
.article ul, .article ol { padding-left: 1.3em; }
.article li + li { margin-top: .5em; }
.article a { font-weight: 650; }
.toc { position: sticky; top: 110px; padding-left: 18px; border-left: 1px solid var(--line); }
.toc strong { color: var(--navy); font-size: 13px; }
.toc nav { margin-top: 14px; display: grid; gap: 8px; }
.toc a { color: var(--muted); font-size: 13px; text-decoration: none; line-height: 1.35; }
.toc a:hover { color: var(--teal); }
.fact-grid { margin: 28px 0; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.fact { background: var(--surface-strong); padding: 20px; }
.fact span { display: block; color: var(--muted); font: 650 11px var(--mono); text-transform: uppercase; letter-spacing: .07em; }
.fact strong { display: block; color: var(--navy); margin-top: 8px; font-size: 16px; line-height: 1.4; }
.equation { margin: 22px 0; padding: 18px 20px; overflow-x: auto; background: #f1efe8; border: 1px solid var(--line); color: var(--navy); font: 650 15px/1.65 var(--mono); }
.chart-frame { margin: 30px 0; padding: 22px; background: var(--surface-strong); border: 1px solid var(--line); border-radius: var(--radius); }
.chart-frame img { width: 100%; display: block; }
.chart-caption { margin-top: 14px; color: var(--muted); font-size: 13px; }
.data-table-wrap { margin: 28px 0; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface-strong); }
table { width: 100%; border-collapse: collapse; min-width: 620px; }
th, td { padding: 13px 15px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--navy); color: #fff; font: 700 12px/1.35 var(--mono); letter-spacing: .04em; }
td { font-size: 14px; color: #3f4952; }
tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) { background: #faf8f2; }
.code-block { margin: 26px 0; overflow-x: auto; padding: 20px; background: #16283d; color: #e9f0f3; border-radius: var(--radius-sm); font: 14px/1.65 var(--mono); }
.download-panel { margin-top: 34px; padding: 26px; background: var(--blue-soft); border: 1px solid #c6d5e1; border-radius: var(--radius); }
.download-panel h3 { font-size: 22px; }
.download-links { margin-top: 18px; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
.download-links a { display: flex; align-items: center; gap: 10px; min-height: 52px; padding: 12px 14px; background: var(--surface-strong); border: 1px solid #c6d5e1; border-radius: 5px; text-decoration: none; font-weight: 700; }
.citation { margin-top: 36px; padding-top: 26px; border-top: 1px solid var(--line); }
.citation pre { white-space: pre-wrap; word-break: break-word; background: #f1efe8; padding: 16px; font: 12px/1.55 var(--mono); }
.note-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; }
.note-card { padding: 28px; background: var(--surface-strong); border: 1px solid var(--line); border-radius: var(--radius); }
.note-card h2 { font-size: 30px; margin-top: 18px; }
.note-card p { color: var(--muted); margin-top: 16px; }
.note-card a { margin-top: 22px; display: inline-flex; align-items: center; gap: 8px; font-weight: 750; text-decoration: none; }
.empty-rule { padding: 34px; border: 1px dashed var(--line-strong); color: var(--muted); }
.cv-layout { display: grid; grid-template-columns: 240px minmax(0,1fr); gap: 58px; }
.cv-sidebar { position: sticky; top: 110px; }
.cv-sidebar .button { width: 100%; margin-bottom: 10px; }
.cv-sidebar dl { margin-top: 28px; }
.cv-sidebar dt { color: var(--muted); font: 700 11px var(--mono); text-transform: uppercase; letter-spacing: .07em; }
.cv-sidebar dd { margin: 5px 0 18px; color: var(--navy); font-size: 14px; }
.cv-section { padding: 34px 0; border-top: 1px solid var(--line); }
.cv-section:first-child { border-top: 0; padding-top: 0; }
.cv-section h2 { font-size: 31px; margin-bottom: 24px; }
.cv-entry + .cv-entry { margin-top: 28px; }
.cv-entry-head { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: baseline; }
.cv-entry h3 { font-size: 22px; }
.cv-entry .date { color: var(--muted); font: 650 12px var(--mono); white-space: nowrap; }
.cv-entry .org { color: var(--blue); font-weight: 700; margin-top: 5px; }
.cv-entry p { color: var(--muted); margin-top: 10px; }
.skill-list { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-list span { padding: 8px 10px; border: 1px solid var(--line); background: var(--surface-strong); border-radius: 4px; font: 650 12px var(--mono); }
.contact-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 72px; }
.contact-card { padding: 32px; background: var(--surface-strong); border: 1px solid var(--line); border-radius: var(--radius); }
.contact-card + .contact-card { margin-top: 16px; }
.contact-card h2 { font-size: 28px; }
.contact-card p { color: var(--muted); margin-top: 14px; }
.contact-link { margin-top: 20px; display: inline-flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 780; word-break: break-word; }
.privacy-list { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 30px; }
.privacy-item { padding: 24px; background: var(--surface-strong); }
.privacy-item h2 { font-size: 23px; }
.privacy-item p { color: var(--muted); margin-top: 10px; }
.not-found { min-height: 68vh; display: grid; place-items: center; padding: 80px 0; text-align: center; }
.not-found h1 { font-size: clamp(52px, 9vw, 104px); }
.not-found p { max-width: 600px; margin: 24px auto 0; color: var(--muted); font-size: 19px; }
.site-footer { padding: 56px 0 26px; background: #ece9e1; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.35fr .65fr .55fr; gap: 56px; }
.footer-brand { color: var(--navy); font-size: 20px; font-weight: 800; text-decoration: none; }
.footer-grid p { color: var(--muted); font-size: 14px; margin-top: 10px; max-width: 470px; }
.footer-boundary { font-size: 12px !important; }
.footer-grid nav, .footer-social { display: grid; gap: 9px; align-content: start; }
.footer-grid nav a, .footer-social a { color: var(--ink); text-decoration: none; font-size: 14px; font-weight: 650; }
.footer-social a { display: inline-flex; align-items: center; gap: 6px; }
.footer-meta { border-top: 1px solid var(--line); margin-top: 36px; padding-top: 20px; display: flex; justify-content: space-between; color: var(--muted); font: 600 11px var(--mono); }
@media (max-width: 960px) {
  .desktop-nav { display: none; }
  .mobile-nav { display: block; }
  .hero-grid, .section-heading, .about-split, .contact-grid { grid-template-columns: 1fr; gap: 42px; }
  .portrait-card { margin: 0; max-width: 520px; }
  .proof-grid { grid-template-columns: repeat(2,1fr); }
  .proof-item:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .proof-item:nth-child(4) { border-top: 1px solid var(--line); }
  .project-card { grid-template-columns: 1fr; }
  .project-card.reverse .project-visual { order: 0; }
  .focus-grid { grid-template-columns: repeat(2,1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .toc { display: none; }
  .cv-layout { grid-template-columns: 1fr; }
  .cv-sidebar { position: static; display: grid; grid-template-columns: repeat(2,1fr); gap: 10px 18px; }
  .cv-sidebar dl { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1.2fr .7fr .7fr; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .shell, .narrow { width: min(calc(100% - 32px), var(--max)); }
  .header-inner { min-height: 66px; }
  .brand-text span { display: none; }
  .hero { padding: 60px 0 44px; }
  .hero-grid { gap: 34px; }
  .proof-strip { padding-bottom: 48px; }
  .proof-grid { grid-template-columns: 1fr; }
  .proof-item, .proof-item + .proof-item { border-left: 0; border-top: 1px solid var(--line); padding: 20px 0; min-height: 96px; }
  .proof-item:first-child { border-top: 0; }
  .section { padding: 64px 0; }
  .section-heading { margin-bottom: 32px; }
  .project-card { padding: 22px; gap: 28px; }
  .focus-grid, .note-grid { grid-template-columns: 1fr; }
  .cta-band .grid { grid-template-columns: 1fr; gap: 28px; }
  .page-hero { padding: 54px 0 34px; }
  .article p, .article li { font-size: 16px; }
  .fact-grid { grid-template-columns: 1fr; }
  .download-links { grid-template-columns: 1fr; }
  .cv-sidebar { grid-template-columns: 1fr; }
  .cv-entry-head { grid-template-columns: 1fr; gap: 4px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-meta { flex-direction: column; gap: 8px; }
}
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
.mt-18 { margin-top: 18px !important; }
.mt-20 { margin-top: 20px !important; }
.mt-22 { margin-top: 22px !important; }
.mt-24 { margin-top: 24px !important; }
.mt-26 { margin-top: 26px !important; }
.mt-30 { margin-top: 30px !important; }
.mt-32 { margin-top: 32px !important; }
.mt-40 { margin-top: 40px !important; }
.mt-48 { margin-top: 48px !important; }
.text-muted-lg { color: var(--muted); font-size: 18px; }
.text-muted-sm { color: var(--muted); font-size: 13px; }
.justify-center { justify-content: center; }
.cta-band .button.inverse-secondary { color: #fff; border-color: #8ea1af; }
.cta-band .button.inverse-secondary:hover { background: rgba(255,255,255,.08); color: #fff; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}
@media print {
  .site-header, .site-footer, .button, .mobile-nav, .toc { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .shell, .narrow { width: 100%; }
  .page-hero, .section { padding: 20px 0; }
  a { color: #000; text-decoration: none; }
  .article-layout { display: block; }
}