:root {
  color-scheme: light;
  --bg: #f6f7f4;
  --surface: #ffffff;
  --surface-muted: #eef3f1;
  --surface-strong: #17202a;
  --text: #1d2730;
  --muted: #62717f;
  --accent: #0f7c80;
  --accent-dark: #07595c;
  --accent-warm: #a35f17;
  --border: #dce3e1;
  --shadow: 0 18px 40px rgba(27, 39, 48, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}

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

p {
  overflow-wrap: anywhere;
}

.hero {
  min-height: 86vh;
  padding: 22px clamp(20px, 5vw, 72px) 84px;
  background:
    linear-gradient(120deg, rgba(15, 124, 128, 0.13), rgba(255, 255, 255, 0) 42%),
    linear-gradient(180deg, #fbfcf8 0%, #edf3f0 100%);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1180px;
  margin: 0 auto;
}

.logo {
  color: var(--surface-strong);
  font-weight: 800;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--accent-dark);
}

.hero-content {
  max-width: 1180px;
  margin: 118px auto 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.15;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

h1 {
  max-width: 1120px;
  font-size: clamp(2.6rem, 4.6vw, 3.65rem);
}

h2 {
  color: var(--surface-strong);
  font-size: clamp(2rem, 4vw, 3.4rem);
}

h3 {
  color: var(--surface-strong);
}

.hero-copy {
  max-width: 1120px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 750;
}

.button.primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(15, 124, 128, 0.22);
}

.button.secondary {
  border-color: rgba(15, 124, 128, 0.36);
  color: var(--accent-dark);
  background: rgba(255, 255, 255, 0.7);
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 82px clamp(20px, 5vw, 36px);
}

.section.muted {
  max-width: none;
  background: var(--surface-muted);
}

.section.muted > * {
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
}

.section-heading {
  margin-bottom: 34px;
}

.section-heading.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(320px, 1fr);
  gap: 34px;
  align-items: end;
}

.section-heading p:not(.eyebrow) {
  max-width: 760px;
  margin: 14px 0 0;
  color: var(--muted);
}

.section-heading.split p:not(.eyebrow) {
  margin: 0;
}

.pipeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.pipeline article {
  min-height: 210px;
  padding: 24px;
  border-right: 1px solid var(--border);
}

.pipeline article:last-child {
  border-right: 0;
}

.pipeline span,
.roadmap-item span {
  display: inline-flex;
  margin-bottom: 24px;
  color: var(--accent-warm);
  font-size: 0.78rem;
  font-weight: 800;
}

.pipeline p,
.card p,
.roadmap-item p,
.contact p:not(.eyebrow) {
  margin: 10px 0 0;
  color: var(--muted);
}

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

.card-grid.compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  display: flex;
  min-height: 318px;
  padding: 24px;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.card-meta {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--accent-warm);
  font-size: 0.78rem;
  font-weight: 850;
}

.card h3 {
  font-size: 1.32rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.tag {
  padding: 4px 9px;
  border: 1px solid rgba(15, 124, 128, 0.22);
  border-radius: 8px;
  background: #edf7f6;
  color: var(--accent-dark);
  font-size: 0.76rem;
  font-weight: 750;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.card-links a,
.contact-links a {
  color: var(--accent-dark);
  font-weight: 800;
}

.roadmap {
  padding-bottom: 58px;
}

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

.roadmap-item {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--border);
}

.roadmap-item:last-child {
  border-bottom: 1px solid var(--border);
}

.roadmap-item span {
  margin: 0;
  font-size: 0.9rem;
}

.contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding-top: 58px;
}

.contact p:not(.eyebrow) {
  max-width: 650px;
}

.contact-links {
  display: grid;
  gap: 10px;
  min-width: min(100%, 260px);
}

.footer {
  padding: 28px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
}

@media (max-width: 920px) {
  .section-heading.split,
  .pipeline,
  .card-grid,
  .card-grid.compact {
    grid-template-columns: 1fr;
  }

  .pipeline article {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .pipeline article:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 720px) {
  .hero {
    min-height: auto;
    padding-bottom: 64px;
  }

  .nav,
  .contact {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-content {
    margin-top: 72px;
  }

  .eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.08em;
  }

  h1 {
    font-size: clamp(1.82rem, 9vw, 2.42rem);
    max-width: 8.6em;
    word-break: break-all;
  }

  h2 {
    font-size: clamp(1.58rem, 8vw, 2.05rem);
    max-width: 10em;
    word-break: break-all;
  }

  .hero-copy,
  .section-heading p:not(.eyebrow),
  .card p,
  .roadmap-item p {
    max-width: 18.5rem;
  }

  p {
    word-break: break-all;
  }

  .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .roadmap-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}