:root {
  --green-900: #123f35;
  --green-700: #207861;
  --green-100: #e7f4ef;
  --blue-700: #1e5f9f;
  --blue-100: #e7f1fb;
  --ink: #18312c;
  --muted: #62736f;
  --line: #dce7e3;
  --paper: #ffffff;
  --soft: #f6faf8;
  --warm: #fff7ec;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.65;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid rgba(220, 231, 227, .85);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--green-700), var(--blue-700));
  border-radius: 8px;
  font-weight: 800;
}

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

.brand strong {
  font-size: 18px;
  letter-spacing: 0;
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 22px;
  color: #36534d;
  font-size: 14px;
}

nav a:hover {
  color: var(--green-700);
}

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: center;
  padding: clamp(56px, 7vw, 100px) clamp(20px, 5vw, 72px);
  overflow: hidden;
  background: #eaf5f1;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 120px;
  background: linear-gradient(180deg, rgba(255,255,255,0), #fff 92%);
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.88) 34%, rgba(255,255,255,.48) 68%, rgba(255,255,255,.18) 100%),
    linear-gradient(180deg, rgba(255,255,255,.04), rgba(18,63,53,.08));
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green-700);
  font-size: 14px;
  font-weight: 700;
}

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

h1 {
  margin-bottom: 16px;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.12;
  letter-spacing: 0;
  color: #102f29;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 3.8vw, 44px);
  line-height: 1.2;
  letter-spacing: 0;
  color: #143d35;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.35;
}

.hero-subtitle {
  margin-bottom: 14px;
  font-size: clamp(24px, 3.4vw, 36px);
  color: var(--green-700);
  font-weight: 700;
}

.hero-copy {
  max-width: 660px;
  margin-bottom: 28px;
  color: #36534d;
  font-size: 19px;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 700;
}

.btn.primary {
  color: #fff;
  background: var(--green-700);
  box-shadow: 0 10px 22px rgba(32, 120, 97, .18);
}

.btn.secondary {
  color: var(--green-900);
  background: #fff;
  border-color: var(--line);
}

.btn.tertiary {
  color: var(--blue-700);
  background: var(--blue-100);
}

.section {
  padding: clamp(56px, 7vw, 96px) clamp(20px, 5vw, 72px);
}

.section-head {
  max-width: 860px;
  margin-bottom: 28px;
}

.section-head h2 {
  margin-bottom: 0;
}

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

.problem-grid article,
.service-grid article,
.contact-panel,
.feature-list div {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.problem-grid article {
  padding: 24px;
}

.problem-grid span {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--blue-700);
  font-weight: 800;
}

.problem-grid p,
.split-section p,
.company-section p,
.experience-section p,
.contact-panel p {
  color: var(--muted);
}

.split-section,
.experience-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 520px);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.split-section.reverse {
  background: var(--soft);
}

.split-section.reverse > div:first-child {
  order: 2;
}

.feature-list {
  display: grid;
  gap: 12px;
}

.feature-list div {
  padding: 18px 20px;
}

.feature-list strong,
.feature-list span {
  display: block;
}

.feature-list strong {
  margin-bottom: 6px;
  color: var(--green-900);
}

.feature-list span {
  color: var(--muted);
}

.boundary {
  padding: 14px 16px;
  border-left: 4px solid var(--green-700);
  background: var(--green-100);
  color: #274a43;
}

.calm-band {
  background: linear-gradient(180deg, var(--warm), #fff);
}

.pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.pill-grid span {
  padding: 10px 16px;
  color: var(--green-900);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 700;
}

.service-section {
  background: #fff;
}

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

.service-grid article {
  padding: 18px 16px;
  color: #264741;
  font-weight: 700;
  background: linear-gradient(180deg, #fff, var(--soft));
}

.consult-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 22px;
  padding: 18px 20px;
  color: #274a43;
  background: var(--green-100);
  border-radius: 8px;
}

.experience-section {
  background: var(--soft);
}

.contact-panel {
  padding: 26px;
}

.contact-panel h3 {
  color: var(--green-900);
}

.company-section {
  max-width: 980px;
}

.site-footer {
  padding: 30px clamp(20px, 5vw, 72px);
  color: #d8e8e3;
  background: #102f29;
  font-size: 14px;
}

.site-footer p {
  margin: 4px 0;
}

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

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: auto;
    padding-top: 60px;
    padding-bottom: 88px;
  }

  .hero-media::after {
    background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(255,255,255,.84));
  }

  .problem-grid,
  .service-grid,
  .split-section,
  .experience-section {
    grid-template-columns: 1fr;
  }

  .split-section.reverse > div:first-child {
    order: initial;
  }

  .consult-strip {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .brand {
    min-width: 0;
  }

  nav {
    gap: 8px 14px;
  }

  .hero-actions,
  .contact-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}