:root {
  --bg: #f7f8f5;
  --paper: #ffffff;
  --ink: #17201a;
  --muted: #667067;
  --line: #dde4dc;
  --green: #176b4d;
  --green-deep: #0e4734;
  --blue: #244f72;
  --amber: #b7791f;
  --shadow: 0 22px 60px rgba(23, 32, 26, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 8%, rgba(36, 79, 114, 0.12), transparent 30rem),
    linear-gradient(180deg, #fbfcfa 0%, var(--bg) 42%, #eef3ee 100%);
  color: var(--ink);
  font-family:
    "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  line-height: 1.65;
}

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

.site-header {
  align-items: center;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(221, 228, 220, 0.9);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  left: 0;
  padding: 18px clamp(20px, 5vw, 72px);
  position: sticky;
  right: 0;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: 12px;
  font-weight: 700;
  min-width: 0;
}

.brand-mark {
  align-items: center;
  background: var(--green-deep);
  border-radius: 6px;
  color: #fff;
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 13px;
  height: 34px;
  justify-content: center;
  width: 34px;
}

nav {
  display: flex;
  gap: 8px;
}

nav a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  padding: 8px 14px;
}

nav a:hover {
  background: #eef3ee;
  color: var(--green-deep);
}

.hero {
  display: grid;
  gap: clamp(32px, 7vw, 84px);
  grid-template-columns: minmax(0, 1.14fr) minmax(280px, 0.86fr);
  min-height: 76vh;
  padding: clamp(64px, 10vw, 118px) clamp(20px, 5vw, 72px) 56px;
}

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

.eyebrow {
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  margin: 0 0 12px;
  text-transform: uppercase;
}

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

h1 {
  font-size: clamp(42px, 8vw, 86px);
  line-height: 1.06;
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
  margin-bottom: 0;
}

h3 {
  font-size: 22px;
  line-height: 1.25;
  margin-bottom: 12px;
}

.hero-text {
  color: #425047;
  font-size: clamp(18px, 2.2vw, 24px);
  max-width: 680px;
}

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

.primary-link,
.secondary-link {
  align-items: center;
  border-radius: 6px;
  display: inline-flex;
  font-weight: 700;
  min-height: 44px;
  padding: 11px 20px;
}

.primary-link {
  background: var(--green-deep);
  color: #fff;
}

.secondary-link {
  border: 1px solid var(--line);
  color: var(--green-deep);
}

.hero-panel {
  align-self: end;
  background:
    linear-gradient(145deg, rgba(14, 71, 52, 0.95), rgba(36, 79, 114, 0.92)),
    var(--green-deep);
  border-radius: 8px;
  box-shadow: var(--shadow);
  color: #fff;
  display: grid;
  gap: 20px;
  padding: clamp(24px, 4vw, 38px);
}

.hero-panel div {
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  padding-bottom: 18px;
}

.hero-panel div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.panel-label {
  color: rgba(255, 255, 255, 0.68);
  display: block;
  font-size: 13px;
  margin-bottom: 6px;
}

.hero-panel strong {
  display: block;
  font-size: clamp(19px, 2.1vw, 25px);
  line-height: 1.35;
}

.section {
  padding: 74px clamp(20px, 5vw, 72px);
}

.section-heading {
  margin-bottom: 32px;
  max-width: 760px;
}

.content-grid {
  display: grid;
  gap: 26px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 1120px;
}

.content-grid p {
  color: #3f4d44;
  font-size: 18px;
}

.services-section {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
}

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

.service-item {
  background: #f9fbf8;
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 260px;
  padding: 28px;
}

.service-item span {
  background: linear-gradient(135deg, var(--green), var(--amber));
  border-radius: 4px;
  display: block;
  height: 8px;
  margin-bottom: 28px;
  width: 42px;
}

.service-item p {
  color: var(--muted);
  margin-bottom: 0;
}

.contact-section {
  align-items: start;
  background: var(--green-deep);
  color: #fff;
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 1.15fr);
  padding: 70px clamp(20px, 5vw, 72px);
}

.contact-section .eyebrow {
  color: #a9d8c6;
}

.contact-section p {
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 0;
}

address {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  display: grid;
  font-style: normal;
  gap: 12px;
  padding: 24px;
}

.site-footer {
  background: #101712;
  color: rgba(255, 255, 255, 0.72);
  display: grid;
  gap: 8px;
  padding: 28px clamp(20px, 5vw, 72px);
}

.site-footer p {
  margin: 0;
}

.site-footer p:last-child {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}

.site-footer a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    flex-wrap: wrap;
  }

  .hero,
  .content-grid,
  .service-list,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 48px;
  }

  .hero-panel {
    align-self: stretch;
  }
}

@media (max-width: 520px) {
  .brand {
    align-items: flex-start;
  }

  nav a {
    padding-left: 0;
  }

  .primary-link,
  .secondary-link {
    justify-content: center;
    width: 100%;
  }

  .service-item {
    min-height: auto;
  }
}