:root {
  color-scheme: light;
  --canvas: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #edf2f8;
  --ink: #142033;
  --muted: #5d6879;
  --quiet: #8791a0;
  --line: #d7dee8;
  --line-strong: #aab5c4;
  --blue: #245bd8;
  --blue-soft: #e5edff;
  --teal: #0b7b78;
  --header: rgba(245, 247, 251, .92);
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --shell: min(1180px, calc(100% - 48px));
}

[data-theme="dark"] {
  color-scheme: dark;
  --canvas: #0b1120;
  --surface: #111a2c;
  --surface-soft: #172236;
  --ink: #edf3fc;
  --muted: #a5b1c2;
  --quiet: #7e8a9d;
  --line: #29364b;
  --line-strong: #46556c;
  --blue: #79a3ff;
  --blue-soft: #172b55;
  --teal: #64ccc7;
  --header: rgba(11, 17, 32, .92);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--canvas); color: var(--ink); font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
::selection { background: var(--blue); color: #fff; }
.shell { width: var(--shell); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 10px 14px; background: var(--ink); color: var(--canvas); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; top: 0; z-index: 30; border-bottom: 1px solid var(--line); background: var(--header); backdrop-filter: blur(16px); }
.header-inner { min-height: 66px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 650; letter-spacing: -.02em; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; font: 600 10px var(--mono); }
.site-nav { display: flex; align-items: center; gap: 28px; margin-left: auto; }
.site-nav a { color: var(--muted); font-size: 12px; font-weight: 600; text-decoration: none; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--blue); }
.header-actions { display: flex; align-items: center; gap: 8px; }
.header-link { min-height: 38px; display: inline-flex; align-items: center; padding: 0 15px; border-radius: 6px; background: var(--ink); color: var(--canvas); font-size: 11px; font-weight: 650; text-decoration: none; }
.header-link:hover, .header-link:focus-visible { background: var(--blue); color: #fff; }
.theme-button, .menu-button { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--ink); cursor: pointer; }
.theme-button:hover, .theme-button:focus-visible, .menu-button:hover, .menu-button:focus-visible { border-color: var(--blue); color: var(--blue); }
.theme-icon { grid-area: 1/1; width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.moon-icon { display: none; }
[data-theme="dark"] .sun-icon { display: none; }
[data-theme="dark"] .moon-icon { display: block; }
.menu-button { display: none; padding: 9px; }
.menu-button > span:not(.sr-only) { display: block; width: 100%; height: 1px; margin: 3px 0; background: currentColor; }

.hero { padding: 84px 0 70px; background-image: radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--line-strong) 36%, transparent) 1px, transparent 0); background-size: 24px 24px; border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(320px, .7fr); gap: 8vw; align-items: center; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 22px; color: var(--blue); font: 600 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.eyebrow span { width: 28px; height: 2px; background: var(--blue); }
h1 { margin: 0; font-size: clamp(58px, 7.5vw, 92px); line-height: .92; letter-spacing: -.06em; }
.hero-summary { max-width: 750px; margin: 30px 0 0; color: var(--muted); font-size: 17px; line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 18px; border: 1px solid var(--line-strong); border-radius: 6px; font-size: 11px; font-weight: 650; text-decoration: none; }
.primary-button { border-color: var(--blue); background: var(--blue); color: #fff; }
.primary-button:hover, .primary-button:focus-visible { background: var(--ink); border-color: var(--ink); }
.secondary-button { background: var(--surface); }
.secondary-button:hover, .secondary-button:focus-visible { border-color: var(--blue); color: var(--blue); }
.resume-card { position: relative; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: 0 24px 70px rgba(23,38,70,.09); }
.resume-card::before { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 4px; background: linear-gradient(var(--blue), var(--teal)); }
.card-topline { display: flex; justify-content: space-between; gap: 14px; padding: 16px 20px; border-bottom: 1px solid var(--line); color: var(--quiet); font: 500 8px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.profile-monogram { width: 78px; height: 78px; display: grid; place-items: center; margin: 24px 20px 18px; border-radius: 50%; background: var(--blue-soft); color: var(--blue); font: 600 19px var(--mono); }
.profile-title { padding: 0 20px 22px; }
.profile-title strong { display: block; font-size: 21px; line-height: 1.2; }
.profile-title span { display: block; margin-top: 7px; color: var(--muted); font-size: 12px; }
.profile-details { margin: 0; border-top: 1px solid var(--line); }
.profile-details div { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; padding: 11px 20px; border-bottom: 1px solid var(--line); }
.profile-details dt { color: var(--quiet); font-size: 10px; }
.profile-details dd { margin: 0; font-size: 11px; font-weight: 650; }
.profile-links { display: grid; grid-template-columns: 1fr 1fr; }
.profile-links a { padding: 13px 20px; color: var(--blue); font: 600 9px var(--mono); text-align: center; text-decoration: none; text-transform: uppercase; }
.profile-links a + a { border-left: 1px solid var(--line); }
.profile-links a:hover, .profile-links a:focus-visible { background: var(--blue-soft); }

.outcomes { border-bottom: 1px solid var(--line); background: var(--surface); }
.outcomes-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.outcomes article { min-height: 150px; padding: 24px; border-left: 1px solid var(--line); }
.outcomes article:last-child { border-right: 1px solid var(--line); }
.outcomes article > span { color: var(--blue); font: 600 8px var(--mono); }
.outcomes strong { display: block; margin-top: 20px; font-size: 27px; letter-spacing: -.03em; }
.outcomes p { max-width: 23ch; margin: 8px 0 0; color: var(--muted); font-size: 11px; line-height: 1.5; }

.section { padding: 82px 0; border-bottom: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: .55fr 1.45fr; gap: 60px; margin-bottom: 40px; }
.section-heading > div:first-child, .education-layout > div:first-child { display: flex; align-items: flex-start; gap: 12px; padding-top: 7px; }
.section-code { width: 30px; height: 30px; display: grid; place-items: center; flex: none; border-radius: 50%; background: var(--blue-soft); color: var(--blue); font: 600 9px var(--mono); }
.section-heading > div:first-child p, .education-layout > div:first-child p { margin: 5px 0 0; color: var(--muted); font: 500 10px var(--mono); text-transform: uppercase; }
.section-heading h2 { max-width: 790px; margin: 0; font-size: clamp(36px, 4.6vw, 58px); line-height: 1.03; letter-spacing: -.045em; }
.section-heading > div:last-child > p { max-width: 700px; margin: 18px 0 0; color: var(--muted); font-size: 14px; }

.capability-matrix { border-top: 2px solid var(--blue); }
.capability-row { display: grid; grid-template-columns: .65fr 1fr 1fr; gap: 42px; align-items: start; padding: 25px 0; border-bottom: 1px solid var(--line); }
.capability-row h3 { margin: 0; font-size: 19px; letter-spacing: -.02em; }
.capability-row p { margin: 0; color: var(--muted); font-size: 12px; }
.capability-row ul, .experience-impact ul { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.capability-row li, .experience-impact li { padding: 5px 7px; border-radius: 4px; background: var(--blue-soft); color: var(--blue); font: 500 8px var(--mono); text-transform: uppercase; }

.experience-section { background: var(--surface); }
.experience-list { border-top: 2px solid var(--blue); }
.experience-item { display: grid; grid-template-columns: .35fr .8fr 1.35fr; gap: 38px; padding: 27px 0 31px; border-bottom: 1px solid var(--line); }
.experience-date { padding-top: 4px; color: var(--quiet); font: 500 9px var(--mono); text-transform: uppercase; }
.experience-role h3 { margin: 0; font-size: 18px; line-height: 1.3; }
.experience-role span, .experience-role a { display: inline-block; margin-top: 7px; color: var(--blue); font-size: 11px; font-weight: 600; text-decoration: none; }
.experience-impact p { margin: 0; color: var(--muted); font-size: 12px; }
.experience-impact ul { margin-top: 14px; }

.project-panel { display: grid; grid-template-columns: .75fr 1.25fr; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.project-overview { padding: 32px; border-right: 1px solid var(--line); background: linear-gradient(145deg, var(--blue-soft), var(--surface)); }
.project-labels { display: flex; flex-wrap: wrap; gap: 6px; }
.project-labels span { padding: 5px 7px; border: 1px solid color-mix(in srgb, var(--blue) 28%, var(--line)); border-radius: 4px; color: var(--blue); font: 600 8px var(--mono); text-transform: uppercase; }
.project-overview h3 { margin: 26px 0 0; font-size: clamp(40px, 5vw, 62px); letter-spacing: -.055em; }
.project-overview p { margin: 18px 0 24px; color: var(--muted); font-size: 13px; }
.inline-link { color: var(--blue); font: 600 9px var(--mono); text-transform: uppercase; text-decoration: none; }
.inline-link:hover, .inline-link:focus-visible { text-decoration: underline; }
.project-system { display: grid; grid-template-columns: 1fr 30px 1fr 30px 1fr; gap: 8px; align-items: center; padding: 32px; }
.system-node { min-width: 0; padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-soft); }
.system-node span { color: var(--blue); font: 600 8px var(--mono); }
.system-node strong { display: block; margin-top: 10px; font-size: 13px; }
.system-node p { margin: 7px 0 0; color: var(--muted); font-size: 10px; }
.system-arrow { color: var(--blue); text-align: center; }
.system-wide { grid-column: 1 / -1; margin-top: 8px; border-color: color-mix(in srgb, var(--teal) 45%, var(--line)); }

.education-section { background: var(--surface-soft); }
.education-layout { display: grid; grid-template-columns: .55fr 1.45fr; gap: 60px; }
.education-layout h2 { margin: 0; font-size: clamp(36px, 4vw, 52px); letter-spacing: -.04em; }
.education-layout > div:last-child p { margin: 10px 0 0; color: var(--muted); }
.education-layout > div:last-child span { display: block; margin-top: 5px; color: var(--quiet); font: 500 9px var(--mono); text-transform: uppercase; }

.contact-section { padding: 80px 0; background: var(--ink); color: var(--canvas); }
.contact-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 9vw; align-items: end; }
.contact-kicker { margin: 0; color: #9bb7ff; font: 600 9px var(--mono); text-transform: uppercase; }
.contact-layout h2 { max-width: 660px; margin: 15px 0 0; font-size: clamp(38px, 5vw, 62px); line-height: 1; letter-spacing: -.045em; }
.contact-layout > div:last-child > p { margin: 0 0 24px; color: color-mix(in srgb, var(--canvas) 65%, transparent); font-size: 13px; }
.contact-actions { display: grid; }
.contact-actions a { display: flex; justify-content: space-between; padding: 12px 0; border-top: 1px solid color-mix(in srgb, var(--canvas) 22%, transparent); font-size: 11px; text-decoration: none; }
.contact-actions a:last-child { border-bottom: 1px solid color-mix(in srgb, var(--canvas) 22%, transparent); }
.contact-actions a:hover, .contact-actions a:focus-visible { color: #9bb7ff; }

.site-footer { padding: 25px 0; border-top: 1px solid var(--line); }
.site-footer .shell { display: flex; justify-content: space-between; gap: 20px; color: var(--quiet); font: 500 8px var(--mono); text-transform: uppercase; }
.not-found { min-height: 100vh; display: grid; place-items: center; }
.not-found h1 { max-width: 900px; }
.not-found .button { margin-top: 28px; color: inherit; border-color: currentColor; }

@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; gap: 50px; }
  .resume-card { max-width: 560px; }
  .outcomes-grid { grid-template-columns: repeat(2, 1fr); }
  .outcomes article:nth-child(2) { border-right: 1px solid var(--line); }
  .outcomes article:nth-child(n+3) { border-top: 1px solid var(--line); }
  .capability-row { grid-template-columns: .7fr 1.3fr; }
  .capability-row ul { grid-column: 2; }
  .experience-item { grid-template-columns: .35fr 1fr; }
  .experience-impact { grid-column: 2; }
  .project-panel { grid-template-columns: 1fr; }
  .project-overview { border-right: 0; border-bottom: 1px solid var(--line); }
}

@media (max-width: 760px) {
  :root { --shell: min(100% - 28px, 1180px); }
  .header-inner { min-height: 60px; gap: 9px; }
  .brand-name { display: none; }
  .menu-button { display: block; margin-left: auto; }
  .site-nav { position: absolute; top: 60px; left: 0; right: 0; display: none; margin: 0; padding: 10px 14px 16px; border-bottom: 1px solid var(--line); background: var(--canvas); }
  .site-nav.open { display: grid; }
  .site-nav a { padding: 11px 4px; border-bottom: 1px solid var(--line); }
  .header-link { display: none; }
  .hero { padding: 56px 0 50px; }
  h1 { font-size: clamp(50px, 16vw, 72px); }
  .hero-summary { font-size: 15px; }
  .section { padding: 60px 0; }
  .section-heading, .education-layout { grid-template-columns: 1fr; gap: 18px; }
  .section-heading h2 { font-size: clamp(35px, 10vw, 49px); }
  .capability-row { grid-template-columns: 1fr; gap: 13px; padding: 22px 0; }
  .capability-row ul { grid-column: 1; }
  .experience-item { grid-template-columns: 1fr; gap: 11px; }
  .experience-impact { grid-column: 1; }
  .project-system { grid-template-columns: 1fr; }
  .system-arrow { transform: rotate(90deg); }
  .system-wide { grid-column: 1; }
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 430px) {
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .outcomes-grid { grid-template-columns: 1fr; }
  .outcomes article, .outcomes article:nth-child(2), .outcomes article:last-child { min-height: 118px; border-right: 1px solid var(--line); border-top: 1px solid var(--line); }
  .outcomes article:first-child { border-top: 0; }
  .project-overview, .project-system { padding: 22px; }
  .site-footer .shell { flex-direction: column; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }