:root {
  --gray-50: #f7fafc;
  --gray-100: #edf2f7;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e0;
  --gray-400: #a0aec0;
  --gray-500: #718096;
  --gray-600: #4a5568;
  --gray-700: #2d3748;
  --gray-800: #1a202c;
  --gray-900: #171923;
  --teal-50: #e6fffa;
  --teal-100: #b2f5ea;
  --teal-200: #81e6d9;
  --teal-300: #4fd1c5;
  --teal-400: #38b2ac;
  --teal-500: #319795;
  --teal-600: #2c7a7b;
  --teal-700: #285e61;
  --teal-800: #234e52;
  --teal-900: #1d4044;
  --clay-50: #fff5f1;
  --clay-100: #ffe3d9;
  --clay-200: #ffc9b8;
  --clay-300: #f5a78f;
  --clay-400: #e48166;
  --clay-500: #c96148;
  --clay-600: #a84b35;
  --clay-700: #873b2b;
  --clay-800: #703226;
  --clay-900: #5e281e;
  --amber-50: #fffbeb;
  --amber-100: #fef3c7;
  --amber-200: #fde68a;
  --amber-300: #fcd34d;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-600: #d97706;
  --amber-700: #b45309;
  --amber-800: #92400e;
  --amber-900: #78350f;
  --paper: var(--gray-50);
  --surface: #fff;
  --ink: var(--gray-800);
  --muted: var(--gray-600);
  --line: var(--gray-200);
  --primary: var(--teal-700);
  --primary-deep: var(--teal-800);
  --accent: var(--teal-500);
  --accent-strong: var(--teal-700);
  --gold: var(--amber-200);
  --surface-subtle: var(--gray-100);
  --sans: "Inter", "Helvetica Neue", sans-serif;
  --serif: var(--sans);
  --mono: "IBM Plex Mono", "DM Mono", monospace;
  --font-size-xs: .75rem;
  --font-size-sm: .875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: var(--font-size-md)/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
h1, h2, h3, p { margin-top: 0; }
.section-shell { width: min(1160px, calc(100% - 96px)); margin-inline: auto; }
.site-header { height: 82px; width: min(1320px, calc(100% - 96px)); margin: auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); position: relative; z-index: 5; }
.wordmark { font: 600 24px/1 var(--serif); letter-spacing: -.08em; }
.wordmark span, .period { color: var(--accent-strong); }
.navigation { display: flex; align-items: center; gap: 34px; font-size: 12px; font-weight: 500; }
.navigation a:not(.nav-cta) { color: var(--muted); transition: color .2s ease; }
.navigation a:hover, .text-link:hover { color: var(--accent-strong); }
.nav-cta { padding: 11px 0 9px; border-bottom: 1px solid var(--ink); }
.nav-cta span { padding-left: 9px; color: var(--accent-strong); }
.menu-toggle { display: none; }

.hero { min-height: 670px; padding-top: 104px; position: relative; }
.hero-copy { position: relative; z-index: 1; }
.eyebrow, .section-kicker, .hero-meta, .timeline-date, .card-number, .principle-no, .education-year { font-family: var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.eyebrow { font-size: 10px; color: var(--muted); display: flex; align-items: center; gap: 10px; }
.status-dot { width: 7px; height: 7px; background: var(--accent); border-radius: 50%; display: inline-block; }
.eyebrow-divider { color: var(--gray-500); }
.hero h1 { font: 500 clamp(65px, 8vw, 106px)/.94 var(--serif); letter-spacing: -.065em; margin: 38px 0 0; max-width: 760px; }
.serif-accent { font-family: var(--serif); font-weight: 400; font-style: italic; letter-spacing: -.055em; }
.hero-bottom { margin-top: 38px; display: flex; align-items: flex-end; justify-content: space-between; max-width: 770px; }
.hero-intro { color: var(--muted); font-size: 14px; line-height: 1.8; max-width: 325px; margin-bottom: 0; }
.hero-actions { display: flex; align-items: center; gap: 25px; padding-bottom: 3px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 23px; padding: 0 19px; border: 0; font-size: 11px; font-weight: 600; transition: background .2s ease, color .2s ease; cursor: pointer; }
.button:hover { background: var(--accent-strong); color: var(--surface); }
.button-dark { background: var(--primary-deep); color: var(--surface); }
.button-dark:hover { background: var(--accent-strong); }
.text-link { font-size: 11px; font-weight: 600; }
.text-link span { padding-left: 7px; color: var(--accent-strong); }
.hero-connect-mobile { display: none; }
.hero-art { position: absolute; width: 390px; height: 316px; right: 0; top: 166px; padding: 10px; background: var(--teal-50); transform: rotate(1.5deg); }
.systems-illustration { display: block; width: 100%; height: 100%; overflow: visible; }
.diagram-kicker, .diagram-label, .diagram-system-label, .diagram-system-subtitle, .diagram-outcome-label, .diagram-caption { font-family: var(--mono); letter-spacing: .08em; }
.diagram-kicker, .diagram-caption { fill: var(--gray-600); font-size: 8px; }
.diagram-input, .diagram-outcome { fill: var(--surface); stroke: var(--gray-300); stroke-width: 1; }
.diagram-label { fill: var(--gray-700); font-size: 9px; font-weight: 500; }
.diagram-icon { fill: none; stroke: var(--accent); stroke-width: 1.4; stroke-linecap: round; }
.diagram-icon-dot { fill: var(--gold); stroke: var(--accent-strong); stroke-width: 1; }
.diagram-connector { fill: none; stroke: var(--teal-400); stroke-width: 1.3; }
.diagram-arrow { fill: none; stroke: var(--accent); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.diagram-system { fill: var(--primary-deep); }
.diagram-system-icon { fill: var(--teal-500); }
.diagram-system-icon-accent { fill: var(--gold); }
.diagram-system-line { fill: none; stroke: var(--teal-300); stroke-width: 1; stroke-linecap: round; }
.diagram-system-label { fill: var(--surface); font-size: 10px; font-weight: 500; }
.diagram-system-subtitle { fill: var(--gray-200); font-size: 7px; }
.diagram-outcome-icon { fill: var(--gold); }
.diagram-check { fill: none; stroke: var(--primary-deep); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.diagram-outcome-label { fill: var(--gray-700); font-size: 7px; text-anchor: middle; }
.diagram-caption-dot { fill: var(--accent); }
.hero-meta { position: absolute; bottom: 28px; left: 0; right: 0; display: flex; justify-content: space-between; font-size: 8px; color: var(--gray-600); }
.hero-meta a { color: var(--ink); }
.hero-meta a span { padding-left: 8px; color: var(--accent-strong); }

.intro-section { padding-top: 105px; padding-bottom: 130px; border-top: 1px solid var(--line); }
.section-kicker { font-size: 9px; color: var(--muted); }
.section-kicker span { color: var(--accent-strong); }
.intro-content { margin: 43px 0 0 25%; }
.intro-content h2, .education-content h2 { font: 500 clamp(39px, 4.5vw, 58px)/1.07 var(--serif); letter-spacing: -.045em; }
.muted { color: var(--gray-600); font-style: italic; }
.intro-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 43px; margin-top: 27px; max-width: 760px; }
.intro-columns p, .principles p { color: var(--muted); font-size: 13px; line-height: 1.85; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 50px; padding-top: 22px; border-top: 1px solid var(--line); }
.principle-no { color: var(--accent-strong); font-size: 9px; }
.principles h3 { font: 500 17px var(--serif); margin: 18px 0 8px; }
.principles p { font-size: 11px; margin-bottom: 0; }
.mission-vision { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 38px; padding-top: 22px; border-top: 1px solid var(--line); }
.mission-vision .principle-no { font-size: 9px; }
.mission-vision p { color: var(--gray-700); font: italic 17px/1.6 var(--serif); margin: 14px 0 0; }

.experience-section { padding: 100px 0 108px; background: var(--surface-subtle); }
.section-heading h2 { font: 500 clamp(42px, 5.2vw, 66px)/1.04 var(--serif); letter-spacing: -.05em; margin: 31px 0 14px; }
.section-description { max-width: 410px; color: var(--muted); font-size: 13px; line-height: 1.8; }
.timeline { margin-top: 62px; border-top: 1px solid var(--teal-300); }
.timeline-item { display: grid; grid-template-columns: 24% 1fr; gap: 25px; padding: 29px 0 32px; border-bottom: 1px solid var(--teal-300); }
.timeline-date { font-size: 9px; color: var(--gray-600); padding-top: 5px; }
.timeline-main { max-width: 680px; }
.timeline-main h3 { font: 500 22px var(--serif); margin: 0 0 7px; }
.timeline-title { display: flex; align-items: center; gap: 12px; }
.current-tag { font: 500 8px var(--mono); color: var(--teal-800); background: var(--teal-100); padding: 5px 7px; letter-spacing: .07em; }
.company { color: var(--ink); font-size: 11px; font-weight: 600; margin-bottom: 16px; }
.company span { color: var(--gray-600); font-weight: 400; }
.timeline-main > p:not(.company) { color: var(--gray-600); font-size: 12px; line-height: 1.8; margin-bottom: 15px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 7px 15px; }
.tag-list span { border: 0; border-radius: 0; border-bottom: 1px solid var(--gray-300); padding: 4px 0; font-size: 9px; color: var(--gray-700); }

.projects-section { padding-top: 110px; padding-bottom: 116px; }
.project-grid { display: grid; grid-template-columns: 1fr 1fr; column-gap: 48px; row-gap: 0; margin-top: 42px; border-top: 1px solid var(--line); }
.project-card { min-height: 288px; padding: 24px 8px 26px; border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.project-card:nth-child(even) { padding-left: 28px; border-left: 1px solid var(--line); }
.project-card:nth-child(3), .project-card:nth-child(4) { min-height: 268px; }
.project-index { color: var(--accent-strong); font: 9px var(--mono); letter-spacing: .07em; }
.project-card h3 { font: 500 23px/1.15 var(--serif); letter-spacing: -.025em; margin: 37px 0 10px; max-width: 300px; }
.project-card > p { font-size: 11px; line-height: 1.8; color: var(--muted); max-width: 390px; min-height: 60px; }
.project-card .tag-list { margin-top: 13px; }
.project-symbol { position: absolute; right: 18px; top: 47px; width: 76px; height: 65px; opacity: .8; }
.symbol-nodes { display: grid; grid-template-columns: repeat(2, 13px); gap: 10px; justify-content: center; align-content: center; transform: rotate(45deg); }
.symbol-nodes i { width: 13px; height: 13px; border: 1px solid var(--accent); border-radius: 50%; position: relative; }
.symbol-nodes i:nth-child(2), .symbol-nodes i:nth-child(3) { background: var(--gold); }
.symbol-chat { width: 52px; height: 46px; border: 1px solid var(--accent); border-radius: 50% 50% 50% 4px; display: grid; place-items: center; font: italic 24px var(--serif); color: var(--accent-strong); }
.symbol-pulse { display: flex; align-items: center; gap: 5px; justify-content: center; }
.symbol-pulse i { width: 5px; background: var(--accent); }
.symbol-pulse i:nth-child(1), .symbol-pulse i:nth-child(5) { height: 14px; }
.symbol-pulse i:nth-child(2), .symbol-pulse i:nth-child(4) { height: 29px; }
.symbol-pulse i:nth-child(3) { height: 50px; }
.symbol-rings { display: grid; place-items: center; }
.symbol-rings i { position: absolute; width: 48px; height: 48px; border: 1px solid var(--accent); border-radius: 50%; }
.symbol-rings i:nth-child(2) { transform: translateX(14px); }
.symbol-rings i:nth-child(3) { transform: translateX(-14px); }

.expertise-section { padding-top: 112px; padding-bottom: 126px; }
.expertise-section .section-heading h2 { margin-bottom: 43px; }
.expertise-grid { display: grid; grid-template-columns: repeat(2, 1fr); column-gap: 46px; }
.expertise-card { min-height: 190px; padding: 22px 4px 25px; border-top: 1px solid var(--line); position: relative; }
.expertise-card:nth-child(even) { transform: translateY(28px); }
.card-number { color: var(--accent-strong); font-size: 9px; }
.expertise-card h3 { font: 500 23px var(--serif); margin: 20px 0 8px; }
.expertise-card p { color: var(--muted); font-size: 11px; line-height: 1.75; max-width: 380px; margin-bottom: 13px; }
.skill-list { color: var(--gray-700); font: 9px/1.8 var(--mono); }

.impact-section { background: var(--primary-deep); color: var(--surface); padding: 76px 0 90px; }
.impact-section .section-kicker { color: var(--gray-200); }
.impact-section .section-kicker span { color: var(--gold); }
.impact-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: 60px; padding-top: 44px; }
.impact-stat strong { font: 500 clamp(88px, 12vw, 148px)/.82 var(--serif); letter-spacing: -.07em; color: var(--gold); }
.impact-stat strong span { font: italic 400 .45em var(--serif); letter-spacing: -.06em; }
.impact-stat p { color: var(--gray-200); max-width: 260px; font-size: 12px; line-height: 1.75; margin: 21px 0 0 8px; }
.impact-copy { border-left: 1px solid var(--teal-600); padding: 7px 0 7px 28px; }
.impact-quote { font: italic 30px/1.28 var(--serif); max-width: 430px; color: var(--surface); }
.impact-note { font-size: 10px; color: var(--gray-200); max-width: 330px; line-height: 1.8; margin-bottom: 0; }

.education-section { padding-top: 102px; padding-bottom: 110px; }
.education-content { margin: 37px 0 0 25%; }
.education-content h2 { font-size: 47px; }
.education-card { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-top: 35px; padding: 22px 0; display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 20px; }
.education-year { font-size: 10px; color: var(--accent-strong); }
.education-card h3 { font: 500 19px var(--serif); margin-bottom: 6px; }
.education-card p { color: var(--muted); font-size: 11px; margin: 0; }
.education-mark { font: 500 13px var(--mono); color: var(--gray-600); }

.contact-section { background: var(--primary); color: var(--surface); padding-top: 90px; }
.contact-inner { display: grid; grid-template-columns: 1fr .75fr; gap: 90px; padding-bottom: 88px; }
.contact-section .section-kicker { color: var(--gray-100); }
.contact-section .section-kicker span { color: var(--gold); }
.contact-copy h2 { font: 500 clamp(53px, 7vw, 86px)/.96 var(--serif); letter-spacing: -.06em; margin: 43px 0 23px; }
.contact-copy > p { color: var(--gray-100); font-size: 12px; line-height: 1.85; max-width: 390px; }
.contact-email { display: inline-block; color: var(--gold); font: 500 17px var(--sans); margin: 17px 0 43px; }
.contact-email span { padding-left: 7px; font-size: 13px; }
.social-links { display: flex; flex-wrap: wrap; gap: 18px; color: var(--gray-100); font-size: 10px; }
.social-links a:hover { color: var(--gold); }
.contact-form-wrap { padding-top: 62px; }
.contact-form-wrap h3 { font: 500 22px var(--serif); margin-bottom: 20px; }
.form-field { margin-bottom: 15px; }
.form-field label { display: block; font-size: 10px; color: var(--gray-100); margin-bottom: 7px; }
.form-field input, .form-field textarea { width: 100%; color: var(--surface); background: var(--teal-900); border: 1px solid var(--teal-300); border-radius: 0; padding: 12px; font-size: 11px; outline: none; }
.form-field input:focus, .form-field textarea:focus { border-color: var(--gold); box-shadow: 0 0 0 1px var(--gold); }
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--gray-200); }
.form-field textarea { resize: vertical; }
.button-light { background: var(--gold); color: var(--primary-deep); min-width: 150px; }
.button-light:hover { background: var(--surface); color: var(--primary-deep); }
.form-success { padding: 12px; border-left: 2px solid var(--gold); background: var(--teal-800); color: var(--surface); font-size: 11px; line-height: 1.5; }
.field-error { color: var(--clay-200); font-size: 10px; display: block; padding-top: 5px; }
.site-footer { min-height: 72px; border-top: 1px solid var(--teal-300); display: flex; align-items: center; justify-content: space-between; color: var(--gray-100); font-size: 9px; }
.footer-mark { color: var(--surface); font-size: 21px; }
.site-footer > a:last-child { color: var(--gold); }

:focus-visible { outline: 2px solid var(--accent-strong); outline-offset: 4px; }
.contact-section :focus-visible { outline-color: var(--gold); }

@media (max-width: 900px) {
  .section-shell, .site-header { width: calc(100% - 56px); }
  .hero { min-height: 730px; padding-top: 82px; }
  .hero-art { width: 360px; height: 292px; top: 345px; right: -4px; }
  .hero-bottom { display: block; }
  .hero-actions { margin-top: 24px; }
  .hero-meta { bottom: 22px; }
  .intro-content, .education-content { margin-left: 15%; }
  .contact-inner { gap: 45px; }
  .project-grid { column-gap: 28px; }
}
@media (max-width: 620px) {
  .section-shell, .site-header { width: calc(100% - 40px); }
  .site-header { height: 68px; }
  .menu-toggle { width: 40px; height: 40px; border: 1px solid var(--line); background: transparent; display: grid; align-content: center; justify-content: center; gap: 5px; }
  .menu-toggle span { display: block; width: 16px; height: 1px; background: var(--ink); transition: transform .2s ease; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }
  .navigation { display: none; position: absolute; top: 67px; left: -20px; right: -20px; background: var(--paper); border-bottom: 1px solid var(--line); padding: 20px; align-items: stretch; gap: 0; flex-direction: column; }
  .navigation.is-open { display: flex; }
  .navigation a:not(.nav-cta) { padding: 13px 0; border-bottom: 1px solid var(--line); }
  .nav-cta { margin-top: 13px; text-align: center; }
  .hero { min-height: 840px; padding-top: 66px; }
  .eyebrow { font-size: 8px; flex-wrap: wrap; }
  .hero h1 { font-size: clamp(57px, 15vw, 82px); margin-top: 31px; }
  .hero-bottom { margin-top: 23px; }
  .hero-intro { font-size: 13px; max-width: 300px; }
  .hero-actions { gap: 18px; }
  .hero-connect-desktop { display: none; }
  .hero-connect-mobile { display: inline; }
  .hero-art { width: min(350px, 96vw); height: auto; aspect-ratio: 420 / 340; top: 510px; left: 50%; right: auto; transform: translateX(-50%) rotate(1.5deg); }
  .hero-meta { font-size: 7px; bottom: 17px; }
  .intro-section { padding-top: 76px; padding-bottom: 80px; }
  .intro-content, .education-content { margin: 32px 0 0; }
  .intro-content h2 { font-size: 39px; }
  .intro-columns, .principles { grid-template-columns: 1fr; gap: 13px; }
  .intro-columns { margin-top: 19px; }
  .intro-columns p { margin-bottom: 0; }
  .principles { margin-top: 30px; gap: 18px; }
  .principles article { display: grid; grid-template-columns: 30px 1fr; column-gap: 10px; }
  .principle-no { grid-row: span 2; padding-top: 3px; }
  .principles h3 { margin: 0 0 5px; }
  .mission-vision { grid-template-columns: 1fr; gap: 20px; margin-top: 26px; }
  .mission-vision p { font-size: 16px; }
  .experience-section { padding: 74px 0; }
  .section-heading h2 { font-size: 43px; }
  .timeline { margin-top: 41px; }
  .timeline-item { grid-template-columns: 1fr; gap: 11px; padding: 22px 0; }
  .timeline-main h3 { font-size: 20px; }
  .projects-section { padding-top: 74px; padding-bottom: 80px; }
  .project-grid { grid-template-columns: 1fr; margin-top: 31px; }
  .project-card, .project-card:nth-child(3), .project-card:nth-child(4) { min-height: 260px; padding: 21px 4px; }
  .project-card:nth-child(even) { padding-left: 4px; border-left: 0; }
  .project-card h3 { margin-top: 38px; max-width: 240px; font-size: 22px; }
  .project-card > p { min-height: 0; }
  .expertise-section { padding-top: 75px; padding-bottom: 80px; }
  .expertise-section .section-heading h2 { margin-bottom: 31px; font-size: 39px; }
  .expertise-grid { grid-template-columns: 1fr; }
  .expertise-card, .expertise-card:nth-child(even) { min-height: auto; padding: 20px 4px; transform: none; }
  .expertise-card h3 { margin-top: 15px; }
  .impact-section { padding: 62px 0; }
  .impact-grid { grid-template-columns: 1fr; gap: 36px; padding-top: 33px; }
  .impact-stat strong { font-size: 112px; }
  .impact-copy { padding-left: 18px; }
  .impact-quote { font-size: 26px; }
  .education-section { padding-top: 73px; padding-bottom: 78px; }
  .education-content h2 { font-size: 39px; }
  .education-card { grid-template-columns: 48px 1fr; gap: 12px; }
  .education-mark { display: none; }
  .education-card h3 { line-height: 1.45; }
  .contact-section { padding-top: 68px; }
  .contact-inner { grid-template-columns: 1fr; gap: 17px; padding-bottom: 60px; }
  .contact-copy h2 { font-size: 64px; margin-top: 32px; }
  .contact-email { font-size: 15px; margin-bottom: 28px; }
  .contact-form-wrap { padding-top: 14px; }
  .site-footer { min-height: 65px; gap: 10px; }
  .site-footer > span { text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}