:root {
  color-scheme: light;
  --ink: #17201d;
  --muted: #65706b;
  --line: #d9e0dc;
  --paper: #ffffff;
  --soft: #f2f6f4;
  --forest: #092d24;
  --forest-light: #124a3b;
  --mint: #b9ecd3;
  --coral: #f17b62;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  letter-spacing: 0;
  line-height: 1.65;
}

a {
  color: inherit;
}

.hero-shell {
  background: var(--forest);
  color: var(--paper);
}

.site-header,
.hero,
.purpose,
.capabilities,
.boundary,
.site-footer {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 17px;
  font-weight: 700;
  text-decoration: none;
}

.brand:focus-visible {
  outline: 3px solid rgba(185, 236, 211, 0.48);
  outline-offset: 5px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(185, 236, 211, 0.72);
  color: var(--mint);
  font-size: 15px;
  font-weight: 800;
}

.scope-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--mint);
  font-size: 13px;
  font-weight: 650;
}

.scope-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(185, 236, 211, 0.12);
}

.hero {
  min-height: 690px;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.65fr);
  grid-template-rows: 1fr auto;
  column-gap: 96px;
  padding-top: 100px;
}

.hero-intro {
  align-self: start;
}

.eyebrow,
.section-label {
  margin: 0 0 20px;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0;
}

.eyebrow {
  color: var(--mint);
}

.hero h1 {
  margin: 0;
  color: var(--paper);
  font-size: 82px;
  line-height: 1.08;
  font-weight: 760;
}

.hero-statement {
  margin: 38px 0 0;
  color: #d9e8e2;
  font-size: 27px;
  line-height: 1.55;
  font-weight: 480;
}

.hero-meta {
  align-self: end;
  margin-bottom: 70px;
  padding-left: 28px;
  border-left: 1px solid rgba(185, 236, 211, 0.46);
}

.hero-meta p {
  margin: 0;
  color: #c4d3ce;
  font-size: 15px;
}

.hero-meta span {
  display: block;
  margin-top: 26px;
  color: var(--mint);
  font-size: 12px;
  font-weight: 700;
}

.service-strip {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.service-strip > div {
  padding: 27px 28px 30px 0;
}

.service-strip > div + div {
  padding-left: 28px;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.service-strip span {
  display: block;
  color: #8eaaa1;
  font-size: 11px;
  font-weight: 700;
}

.service-strip strong {
  display: block;
  margin-top: 7px;
  color: var(--paper);
  font-size: 16px;
  font-weight: 650;
}

.purpose {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 100px;
  padding-block: 122px 104px;
}

.section-label {
  color: var(--forest-light);
}

.purpose h2,
.boundary h2 {
  margin: 0;
  font-size: 42px;
  line-height: 1.3;
  font-weight: 720;
}

.purpose-copy {
  align-self: end;
  color: var(--muted);
  font-size: 16px;
}

.purpose-copy p {
  margin: 0;
}

.purpose-copy p + p {
  margin-top: 20px;
  color: var(--forest-light);
  font-weight: 650;
}

.capabilities {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.capabilities article {
  min-width: 0;
  padding: 42px 36px 46px 0;
}

.capabilities article + article {
  padding-left: 36px;
  border-left: 1px solid var(--line);
}

.capability-heading span {
  color: var(--coral);
  font-size: 11px;
  font-weight: 800;
}

.capability-heading h3 {
  margin: 42px 0 12px;
  font-size: 22px;
}

.capabilities article p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.boundary {
  margin-top: 110px;
  padding: 64px 70px 68px;
  background: var(--soft);
  border-top: 4px solid var(--forest-light);
}

.boundary h2 {
  max-width: 680px;
}

.boundary > p:last-child {
  max-width: 780px;
  margin: 28px 0 0;
  color: #49544f;
  font-size: 17px;
}

.site-footer {
  min-height: 220px;
  margin-top: 100px;
  padding-block: 54px 44px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  border-top: 1px solid var(--line);
}

.site-footer strong {
  font-size: 16px;
}

.site-footer p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.footer-note {
  max-width: 360px;
  text-align: right;
}

@media (max-width: 900px) {
  .hero {
    min-height: 650px;
    grid-template-columns: minmax(0, 1.25fr) minmax(240px, 0.75fr);
    gap: 52px;
  }

  .hero h1 {
    font-size: 64px;
  }

  .purpose {
    gap: 60px;
  }
}

@media (max-width: 680px) {
  .site-header,
  .hero,
  .purpose,
  .capabilities,
  .boundary,
  .site-footer {
    width: min(100% - 32px, 1180px);
  }

  .site-header {
    min-height: 70px;
    gap: 12px;
  }

  .brand {
    gap: 9px;
    font-size: 16px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .scope-badge {
    flex: 0 0 auto;
    font-size: 11px;
  }

  .hero {
    min-height: 0;
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    gap: 0;
    padding-top: 72px;
  }

  .eyebrow {
    margin-bottom: 18px;
    font-size: 10px;
  }

  .hero h1 {
    font-size: 48px;
    line-height: 1.12;
  }

  .hero-statement {
    margin-top: 28px;
    font-size: 22px;
  }

  .hero-meta {
    align-self: auto;
    margin: 54px 0 50px;
    padding-left: 20px;
  }

  .hero-meta p {
    font-size: 14px;
  }

  .hero-meta span {
    margin-top: 18px;
  }

  .service-strip {
    grid-column: 1;
    grid-template-columns: 1fr;
  }

  .service-strip > div,
  .service-strip > div + div {
    padding: 20px 0 22px;
    border-left: 0;
  }

  .service-strip > div + div {
    border-top: 1px solid rgba(255, 255, 255, 0.14);
  }

  .purpose {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-block: 82px 72px;
  }

  .purpose h2,
  .boundary h2 {
    font-size: 31px;
  }

  .capabilities {
    grid-template-columns: 1fr;
  }

  .capabilities article,
  .capabilities article + article {
    padding: 32px 0 34px;
    border-left: 0;
  }

  .capabilities article + article {
    border-top: 1px solid var(--line);
  }

  .capability-heading h3 {
    margin-top: 24px;
  }

  .boundary {
    margin-top: 76px;
    padding: 40px 28px 44px;
  }

  .boundary > p:last-child {
    font-size: 15px;
  }

  .site-footer {
    min-height: 0;
    margin-top: 76px;
    flex-direction: column;
    gap: 26px;
  }

  .footer-note {
    text-align: left;
  }
}

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