:root {
  --ink: #152333;
  --muted: #5b6877;
  --line: #d9e3ea;
  --paper: #ffffff;
  --wash: #f6f9fb;
  --blue: #235f93;
  --blue-dark: #153f63;
  --teal: #257a75;
  --green: #5a8268;
  --coral: #c96d46;
  --gold: #a7771c;
  --shadow: 0 18px 45px rgba(21, 35, 51, 0.08);
  --radius: 8px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(217, 227, 234, 0.92);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.nav-shell {
  width: min(100% - 32px, calc(var(--max) + 120px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 18px;
  font-weight: 780;
  letter-spacing: 0;
}

.brand img {
  width: 36px;
  height: 36px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 9px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-links a {
  padding: 9px 16px;
  border: 1px solid #b8ccd9;
  border-radius: var(--radius);
  color: var(--muted);
  background: #ffffff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 650;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--blue-dark);
  background: #edf5fb;
}

.nav-links .repo-link {
  color: var(--blue-dark);
  background: #ffffff;
}

.nav-links .contact-link {
  color: var(--blue-dark);
  background: #ffffff;
}

.nav-links .contact-link:hover {
  color: #ffffff;
  border-color: var(--teal);
  background: var(--teal);
}

.nav-links .repo-link:hover {
  color: #ffffff;
  background: var(--teal);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 72vh;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: #fbfcfd;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("overview.png");
  background-position: right 21% center;
  background-repeat: no-repeat;
  background-size: min(58vw, 680px) auto;
  opacity: 0.17;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.58);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
  padding: 88px 0 64px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 760;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--coral);
}

.acceptance-note {
  margin: 0 0 14px;
  color: var(--coral);
  font-size: 18px;
  font-weight: 780;
}

.hero-subtitle {
  margin: 12px 0 0;
  color: var(--teal);
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 760;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(42px, 6vw, 84px);
  font-weight: 830;
}

.page-hero h1 {
  font-size: clamp(28px, 3.2vw, 48px);
}

.lead {
  max-width: 720px;
  margin: 20px 0 0;
  color: #2f4053;
  font-size: clamp(18px, 2vw, 23px);
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: var(--paper);
  text-decoration: none;
  font-weight: 720;
  box-shadow: 0 8px 20px rgba(21, 35, 51, 0.06);
}

.button.primary {
  color: #ffffff;
  border-color: var(--blue-dark);
  background: var(--blue-dark);
}

.button.primary:hover {
  border-color: var(--teal);
  background: var(--teal);
}

.star-box {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 9px 14px;
  border: 1px solid #b8ccd9;
  border-radius: var(--radius);
  color: var(--blue-dark);
  background: #ffffff;
  text-decoration: none;
  font-weight: 720;
  box-shadow: 0 8px 20px rgba(21, 35, 51, 0.06);
}

.star-box:hover {
  border-color: var(--teal);
  background: #f2fbfa;
}

.star-box img {
  width: auto;
  height: 20px;
}

.button:hover {
  border-color: #abc0d1;
}

.metric-band {
  background: var(--ink);
  color: #ffffff;
}

.metric-grid {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.16);
}

.metric {
  min-height: 118px;
  padding: 24px 22px;
  background: var(--ink);
}

.metric strong {
  display: block;
  font-size: clamp(29px, 4vw, 46px);
  line-height: 1;
}

.metric span {
  display: block;
  margin-top: 9px;
  color: #bfd0dc;
  font-size: 14px;
}

.section {
  padding: 78px 0;
}

.section.alt {
  background: var(--wash);
}

.section.compact {
  padding: 56px 0;
}

.home-tight-section {
  padding-top: 56px;
  padding-bottom: 56px;
}

.home-tight-section + .home-tight-section {
  padding-top: 22px;
}

.container {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 780;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-heading {
  max-width: 780px;
  font-size: clamp(24px, 2.6vw, 36px);
}

.section-lede {
  max-width: 780px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.grid {
  display: grid;
  gap: 20px;
  margin-top: 34px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 24px;
  box-shadow: var(--shadow);
}

.card.subtle {
  box-shadow: none;
}

.card h3 {
  font-size: 20px;
}

.card p,
.card li {
  color: var(--muted);
}

.card p:last-child {
  margin-bottom: 0;
}

.number-card {
  border-top: 4px solid var(--teal);
}

.number-card:nth-child(2) {
  border-top-color: var(--blue);
}

.number-card:nth-child(3) {
  border-top-color: var(--coral);
}

.number-card:nth-child(4) {
  border-top-color: var(--gold);
}

.number-card strong {
  display: block;
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 34px;
  line-height: 1;
}

.figure {
  margin: 36px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.narrow-figure {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
}

.figure img {
  width: 100%;
  background: #ffffff;
}

.figure figcaption {
  padding: 16px 20px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.flow-step {
  position: relative;
  min-height: 170px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.flow-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 20px;
  border-radius: 50%;
  color: #ffffff;
  background: var(--blue);
  font-weight: 760;
}

.flow-step h3 {
  font-size: 18px;
}

.flow-step p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
}

.page-hero {
  padding: 84px 0 58px;
  border-bottom: 1px solid var(--line);
  background: var(--wash);
}

.page-hero .container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 28px;
}

.page-hero .logo-mark {
  width: 118px;
  height: 118px;
  opacity: 0.9;
}

.content {
  max-width: 840px;
}

.content p,
.content li {
  color: var(--muted);
}

.content h2 {
  margin-top: 42px;
  font-size: 25px;
}

.content h3 {
  margin-top: 28px;
}

.table-wrap {
  margin-top: 30px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: 15px;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--ink);
  background: #eef5f8;
  font-weight: 760;
}

tr:last-child td {
  border-bottom: 0;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue-dark);
  background: #f3f8fb;
  font-size: 14px;
  font-weight: 650;
}

.code-block {
  position: relative;
  margin-top: 22px;
  border: 1px solid #c9d8e2;
  border-radius: var(--radius);
  background: #102033;
  overflow: hidden;
}

.code-block pre {
  margin: 0;
  padding: 22px;
  overflow-x: auto;
  color: #e7f0f6;
  font-size: 14px;
  line-height: 1.55;
}

.copy-button {
  position: absolute;
  right: 12px;
  top: 12px;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  font-weight: 700;
  cursor: pointer;
}

.notice {
  margin-top: 26px;
  padding: 18px 20px;
  border-left: 4px solid var(--coral);
  background: #fff7f2;
  color: #4c3a2f;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.team-group-title {
  margin: 0;
  color: var(--ink);
  font-size: 28px;
}

.team-grid + .team-group-title {
  margin-top: 42px;
}

.affiliation-list + .team-group-title {
  margin-top: 34px;
}

.person-card {
  min-height: 178px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 22px;
  box-shadow: var(--shadow);
}

.person-card h3 {
  font-size: 20px;
}

.person-meta {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 16px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--blue-dark);
  background: #eef5f8;
  font-size: 12px;
  font-weight: 760;
}

.tag.highlight {
  color: #ffffff;
  background: var(--teal);
}

.affiliation-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
  padding: 0;
  list-style: none;
}

.affiliation-list li {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--muted);
}

.affiliation-list strong {
  display: block;
  color: var(--ink);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #101b29;
  color: #dce7ef;
}

.footer-inner {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
  padding: 36px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
}

.footer-inner a {
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.footer-inner p {
  max-width: 620px;
  margin: 0;
  color: #aebfcb;
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #ffffff;
  background: var(--blue-dark);
  font-size: 20px;
  cursor: pointer;
}

.back-to-top.is-visible {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 920px) {
  .grid.two,
  .grid.three,
  .grid.four,
  .flow,
  .team-grid,
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-hero .container {
    grid-template-columns: 1fr;
  }

  .page-hero .logo-mark {
    display: none;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav-links {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links .repo-link,
  .nav-links .contact-link {
    margin-left: 0;
  }

  .hero {
    min-height: 68vh;
  }

  .hero::before {
    background-position: center bottom 24px;
    background-size: 82vw auto;
    opacity: 0.11;
  }

  .hero-inner {
    padding-top: 70px;
  }

  .grid.two,
  .grid.three,
  .grid.four,
  .flow,
  .team-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .metric {
    min-height: 92px;
  }

  .section {
    padding: 58px 0;
  }

  .card {
    padding: 20px;
  }
}