:root {
  --ink: #19211e;
  --muted: #5d6863;
  --line: #dce4df;
  --paper: #fbfcfa;
  --soft: #eef4ef;
  --green: #174c3a;
  --gold: #b78a36;
  --blue: #2d6f91;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(25, 33, 30, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  background: rgba(251, 252, 250, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--green);
  background: var(--green);
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.brand-name,
.brand-legal {
  display: block;
}

.brand-name {
  font-size: 17px;
  font-weight: 750;
  letter-spacing: 0;
}

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

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.site-nav a {
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--green);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
  min-height: calc(100vh - 84px);
  padding: clamp(48px, 7vw, 96px) clamp(20px, 5vw, 72px) clamp(40px, 6vw, 72px);
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-text {
  max-width: 650px;
  color: var(--muted);
  font-size: 20px;
}

.zh {
  color: #4f5d57;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 18px;
  border: 1px solid var(--green);
  border-radius: 6px;
  font-size: 15px;
  font-weight: 750;
  text-decoration: none;
}

.button.primary {
  background: var(--green);
  color: var(--white);
}

.button.secondary {
  background: transparent;
  color: var(--green);
}

.button:hover {
  transform: translateY(-1px);
}

.hero-visual {
  margin: 0;
}

.hero-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.section {
  padding: clamp(52px, 7vw, 88px) clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
}

.intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 5vw, 64px);
  background: var(--green);
  color: var(--white);
}

.intro p {
  max-width: 650px;
  margin: 0;
  font-size: clamp(22px, 2.5vw, 34px);
  line-height: 1.22;
}

.intro .zh {
  color: rgba(255, 255, 255, 0.82);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 32px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  min-height: 330px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(25, 33, 30, 0.05);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 32px;
  margin-bottom: 36px;
  border-bottom: 2px solid var(--gold);
  color: var(--green);
  font-size: 13px;
  font-weight: 850;
}

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

.service-card .zh {
  margin-bottom: 0;
}

.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(28px, 6vw, 80px);
  background: var(--soft);
}

.approach-list {
  display: grid;
  gap: 18px;
}

.approach-list > div {
  padding-bottom: 18px;
  border-bottom: 1px solid #cbd8d0;
}

.approach-list > div:last-child {
  border-bottom: 0;
}

.approach-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: clamp(52px, 7vw, 86px) clamp(20px, 5vw, 72px);
  background: var(--ink);
  color: var(--white);
}

.contact p {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.76);
}

.contact .zh {
  color: rgba(255, 255, 255, 0.68);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(20px, 5vw, 72px);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .intro,
  .split,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

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

  .contact {
    align-items: start;
  }
}

@media (max-width: 560px) {
  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .brand-legal {
    display: none;
  }

  h1 {
    font-size: 39px;
  }

  .hero-text {
    font-size: 18px;
  }

  .button {
    width: 100%;
  }
}