:root {
  color-scheme: light;
  --ink: #173634;
  --muted: #58716c;
  --paper: #f2f6f1;
  --paper-2: #e6eee7;
  --teal: #12665e;
  --teal-deep: #0b4543;
  --gold: #b07024;
  --line: rgba(23, 54, 52, 0.18);
  --shadow: 0 24px 70px rgba(20, 58, 55, 0.15);
  font-family:
    "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  z-index: 5;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 72px);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--teal);
  color: var(--teal-deep);
  font-size: 12px;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

nav {
  display: flex;
  gap: clamp(16px, 3vw, 34px);
  color: var(--muted);
  font-size: 14px;
}

nav a:hover {
  color: var(--teal-deep);
}

.hero {
  position: relative;
  min-height: 78vh;
  display: grid;
  align-items: end;
  padding: 150px clamp(20px, 7vw, 104px) 74px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(242, 246, 241, 0.96) 0%, rgba(242, 246, 241, 0.76) 43%, rgba(242, 246, 241, 0.2) 100%),
    linear-gradient(0deg, rgba(9, 55, 53, 0.12), transparent 45%);
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: min(1120px, 100%);
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  max-width: 1120px;
  font-size: clamp(34px, 4.4vw, 68px);
  line-height: 1.03;
  font-weight: 800;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4.8vw, 72px);
  line-height: 1.02;
}

h3 {
  margin-bottom: 12px;
  font-size: 23px;
}

.hero-text {
  max-width: 680px;
  color: #264d49;
  font-size: clamp(18px, 2.2vw, 26px);
  line-height: 1.72;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--teal-deep);
  font-weight: 700;
}

.button.primary {
  background: var(--teal-deep);
  color: #eef5ef;
  box-shadow: var(--shadow);
}

.button.secondary {
  background: rgba(242, 246, 241, 0.7);
}

.band,
.services,
.principles {
  padding: clamp(64px, 9vw, 132px) clamp(20px, 7vw, 104px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(160px, 260px) minmax(0, 850px);
  gap: clamp(26px, 6vw, 96px);
  background: var(--paper);
}

.intro p {
  margin-bottom: 0;
  font-size: clamp(24px, 3.5vw, 46px);
  line-height: 1.24;
  font-weight: 700;
}

.section-head {
  max-width: 900px;
  margin-bottom: clamp(32px, 6vw, 72px);
}

.section-head.narrow {
  max-width: 1040px;
  margin-bottom: 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.service-grid article {
  min-height: 292px;
  padding: clamp(22px, 3vw, 36px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 88%, white);
}

.service-grid span {
  display: block;
  margin-bottom: 52px;
  color: var(--gold);
  font-weight: 800;
}

.service-grid p,
.scope p,
.principles span,
.footer p {
  color: var(--muted);
  line-height: 1.75;
}

.scope {
  background: var(--teal-deep);
  color: #eff6ef;
}

.scope .section-kicker,
.scope p {
  color: #d6bf8e;
}

.scope p {
  max-width: 1040px;
  font-size: clamp(18px, 2.2vw, 27px);
}

.principles {
  display: grid;
  grid-template-columns: minmax(240px, 420px) minmax(0, 1fr);
  gap: clamp(32px, 7vw, 100px);
  background: var(--paper-2);
}

.principles ul {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.principles li {
  display: grid;
  grid-template-columns: minmax(120px, 210px) 1fr;
  gap: 22px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.principles strong {
  font-size: 20px;
}

.footer {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 40px clamp(20px, 7vw, 104px);
  background: #143c39;
  color: #eef5ef;
}

.footer p {
  margin: 8px 0 0;
}

.footer span {
  display: block;
  margin-bottom: 8px;
  color: #d6bf8e;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer a {
  font-weight: 800;
}

@media (max-width: 980px) {
  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .intro,
  .principles {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-header {
    position: static;
    align-items: flex-start;
    gap: 18px;
    flex-direction: column;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero {
    min-height: 82vh;
    padding-top: 70px;
  }

  .hero::after {
    background:
      linear-gradient(90deg, rgba(242, 246, 241, 0.98) 0%, rgba(242, 246, 241, 0.84) 72%, rgba(242, 246, 241, 0.5) 100%),
      linear-gradient(0deg, rgba(9, 55, 53, 0.12), transparent 45%);
  }

  .service-grid,
  .principles li,
  .footer {
    grid-template-columns: 1fr;
  }

  .service-grid {
    display: block;
    border-left: 0;
  }

  .service-grid article {
    min-height: auto;
    border-left: 1px solid var(--line);
  }

  .service-grid span {
    margin-bottom: 28px;
  }

  .footer {
    display: grid;
  }
}