:root {
  color-scheme: light;
  --paper: #f7f7f3;
  --ink: #1b2420;
  --muted: #4e5b55;
  --rule: #cdd4cc;
  --accent: #1b5b4d;
  --accent-dark: #12463b;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection { background: #c4dacf; color: var(--ink); }
a { color: inherit; text-underline-offset: .22em; }
a:hover { color: var(--accent-dark); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
h1, h2, h3, p { margin: 0; }
.shell { width: min(100% - 48px, 1100px); margin-inline: auto; }

.skip-link {
  position: absolute;
  z-index: 10;
  inset: 12px auto auto 12px;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header { border-bottom: 1px solid var(--rule); }
.header-inner { min-height: 76px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.wordmark { font-size: 24px; font-weight: 800; letter-spacing: -.09em; text-decoration: none; line-height: 1; }
.wordmark-dot, .heading-period { color: var(--accent); }
.nav-list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 28px; }
.nav-list a { min-height: 44px; display: inline-flex; align-items: center; font-size: 14px; font-weight: 700; text-decoration: none; }
.nav-list a:hover, .nav-list a:focus-visible { text-decoration: underline; }

.hero { padding-block: clamp(64px, 7vw, 100px) 88px; }
.eyebrow, .experience-company {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .14em;
  line-height: 1.4;
  text-transform: uppercase;
}
.hero h1 {
  margin-top: 24px;
  font-size: clamp(64px, 10vw, 138px);
  font-weight: 800;
  letter-spacing: -.085em;
  line-height: .92;
}
.hero-bottom { margin-top: 40px; display: flex; align-items: end; justify-content: space-between; gap: 32px; }
.hero-intro { max-width: 720px; font-size: clamp(22px, 2.8vw, 34px); line-height: 1.3; letter-spacing: -.03em; }
.hero-detail { max-width: 650px; margin-top: 14px; color: var(--muted); font-size: 17px; line-height: 1.55; }
.text-link { width: fit-content; min-height: 44px; display: inline-flex; align-items: center; gap: 10px; color: var(--accent); font-size: 15px; font-weight: 700; text-decoration-thickness: 1px; }
.text-link:hover { color: var(--accent-dark); }
.hero-link { flex: 0 0 auto; }
.hero-facts { list-style: none; border-top: 1px solid var(--rule); padding: 22px 0 0; margin: 52px 0 0; display: grid; grid-template-columns: 1.1fr 1.3fr .6fr; gap: 24px; }
.hero-facts li { font-size: 14px; font-weight: 700; line-height: 1.4; }
.hero-facts span { display: block; margin-bottom: 7px; color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }

.work-section, .expertise-section, .background-section, .contact-section { scroll-margin-top: 24px; }
.section-heading { border-top: 1px solid var(--ink); padding-block: 25px 42px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 420px); gap: 32px; }
.section-heading h2 { margin-top: 12px; font-size: clamp(31px, 3.3vw, 44px); line-height: 1.06; letter-spacing: -.055em; }
.section-heading > p { max-width: 390px; align-self: end; color: var(--muted); font-size: 16px; }
.experience-list { list-style: none; padding: 0; margin: 0; }
.experience { border-top: 1px solid var(--rule); padding-block: 38px 44px; display: grid; grid-template-columns: 205px minmax(0, 1fr); gap: 30px; }
.experience:last-child { border-bottom: 1px solid var(--rule); }
.experience-meta { color: var(--muted); font-size: 13px; line-height: 1.5; }
.experience-dates { color: var(--ink); font-weight: 700; }
.experience-location { margin-top: 4px; }
.experience-company { color: var(--accent); }
.experience h3 { margin-top: 8px; font-size: clamp(28px, 3.5vw, 42px); line-height: 1.08; letter-spacing: -.055em; }
.experience-intro { max-width: 720px; margin-top: 17px; font-size: 17px; line-height: 1.55; }
.experience-highlights { max-width: 730px; padding-left: 20px; margin: 14px 0 0; color: var(--muted); font-size: 15px; line-height: 1.6; }
.experience-highlights li + li { margin-top: 5px; }
.experience-highlights li::marker { color: var(--accent); }
.experience-tech { max-width: 740px; margin-top: 21px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.experience-tech span { display: block; margin-bottom: 3px; color: var(--ink); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }

.expertise-section { padding-top: 110px; }
.expertise-grid { border-top: 1px solid var(--rule); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.expertise-grid > div { padding: 28px 24px 24px 0; border-bottom: 1px solid var(--rule); }
.expertise-grid > div + div { padding-left: 24px; border-left: 1px solid var(--rule); }
.expertise-grid h3 { font-size: 21px; line-height: 1.2; letter-spacing: -.035em; }
.expertise-grid p { max-width: 280px; margin-top: 13px; color: var(--muted); font-size: 15px; line-height: 1.6; }

.background-section { padding-top: 110px; }
.background-heading { padding-bottom: 30px; }
.background-grid { border-top: 1px solid var(--rule); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.background-grid > div { min-width: 0; padding: 28px 24px 26px 0; border-bottom: 1px solid var(--rule); }
.background-grid > div + div { padding-left: 24px; border-left: 1px solid var(--rule); }
.background-kind { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .12em; line-height: 1.4; text-transform: uppercase; }
.background-grid h3 { margin-top: 12px; font-size: 21px; line-height: 1.2; letter-spacing: -.035em; }
.background-grid h3 + p { margin-top: 12px; color: var(--muted); font-size: 15px; line-height: 1.55; }
.background-grid .credential-id { margin-top: 14px; color: var(--muted); font-size: 12px; line-height: 1.5; overflow-wrap: anywhere; }
.contact-section { padding-bottom: 110px; }
.contact-heading { padding-bottom: 30px; }
.contact-links { border-top: 1px solid var(--rule); }
.contact-links a { border-bottom: 1px solid var(--rule); min-height: 72px; display: flex; justify-content: space-between; align-items: center; gap: 24px; font-size: 21px; font-weight: 700; letter-spacing: -.03em; text-decoration: none; }
.contact-links a:hover { padding-inline-start: 8px; }
.site-footer { border-top: 1px solid var(--rule); }
.footer-inner { min-height: 96px; display: flex; justify-content: space-between; align-items: center; gap: 24px; color: var(--muted); font-size: 13px; }
.footer-inner a { min-height: 44px; display: inline-flex; align-items: center; color: var(--ink); font-weight: 700; }

@media (max-width: 760px) {
  .shell { width: min(100% - 36px, 1100px); }
  .header-inner { min-height: 72px; }
  .nav-list { gap: 4px 18px; }
  .hero { padding-block: 90px 80px; }
  .hero-bottom { display: block; margin-top: 35px; }
  .hero-link { margin-top: 26px; }
  .hero-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .section-heading { grid-template-columns: 1fr; gap: 20px; padding-bottom: 36px; }
  .section-heading > p { align-self: auto; }
  .experience { grid-template-columns: 1fr; gap: 14px; padding-block: 32px 36px; }
  .experience-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; }
  .experience-location { margin-top: 0; }
  .expertise-section, .background-section { padding-top: 88px; }
  .expertise-grid { grid-template-columns: 1fr; }
  .expertise-grid > div, .expertise-grid > div + div { padding: 22px 0; border-left: 0; }
  .expertise-grid p { max-width: 560px; }
  .background-grid { grid-template-columns: 1fr; }
  .background-grid > div, .background-grid > div + div { padding: 22px 0; border-left: 0; }
  .contact-section { padding-bottom: 88px; }
}

@media (max-width: 460px) {
  .header-inner { align-items: flex-start; flex-direction: column; gap: 4px; padding-block: 19px 8px; }
  .nav-list { gap: 20px; }
  .nav-list a { font-size: 13px; }
  .hero { padding-block: 70px 72px; }
  .hero h1 { font-size: clamp(58px, 15vw, 76px); }
  .hero-intro { font-size: 23px; }
  .hero-detail { font-size: 16px; }
  .hero-facts { grid-template-columns: 1fr; margin-top: 36px; }
  .experience-intro { font-size: 16px; }
  .contact-links a { font-size: 18px; }
}

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