:root {
  color-scheme: light;
  --ink: #18212f;
  --muted: #657084;
  --line: #dfe5ed;
  --panel: #ffffff;
  --soft: #f5f7fb;
  --brand: #0f8b6f;
  --brand-dark: #0a5f50;
  --accent: #d94f30;
  --shadow: 0 22px 60px rgba(24, 33, 47, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

img {
  display: block;
  width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(223, 229, 237, 0.78);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 8px;
  background: var(--brand);
  color: #ffffff;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(320px, 1.12fr);
  align-items: center;
  gap: clamp(26px, 4vw, 70px);
  min-height: calc(100vh - 67px);
  padding: clamp(48px, 8vw, 92px) clamp(20px, 5vw, 72px) clamp(34px, 6vw, 70px);
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(15, 139, 111, 0.08), rgba(217, 79, 48, 0.06) 52%, #ffffff 84%),
    #ffffff;
}

.hero-copy {
  max-width: 660px;
}

.eyebrow,
.section-label {
  margin: 0 0 12px;
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.3;
}

.hero-text {
  max-width: 560px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 18px;
}

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

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 18px;
  font-weight: 700;
}

.button.primary {
  background: var(--brand);
  color: #ffffff;
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
}

.hero-visual {
  margin: 0;
  min-width: 0;
}

.hero-visual img {
  aspect-ratio: 16 / 10;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.section {
  padding: clamp(54px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.split {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(24px, 5vw, 70px);
  border-top: 1px solid var(--line);
}

.section-content {
  max-width: 760px;
  color: var(--muted);
  font-size: 17px;
}

.section-content p:last-child,
.app-panel p:last-child,
.service-card p,
.footer p {
  margin-bottom: 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

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

.service-card {
  min-height: 224px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

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

.service-icon {
  display: inline-flex;
  margin-bottom: 30px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 800;
}

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

.app-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.78fr);
  gap: clamp(24px, 4vw, 58px);
  align-items: start;
  max-width: 1180px;
}

.app-panel p {
  max-width: 680px;
  color: var(--muted);
  font-size: 17px;
}

.info-list,
.company-list {
  margin: 0;
}

.info-list div,
.company-list div {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.info-list div:first-child,
.company-list div:first-child {
  border-top: 1px solid var(--line);
}

dt {
  color: var(--muted);
  font-size: 14px;
}

dd {
  margin: 0;
  font-weight: 700;
}

.company-info {
  background: #ffffff;
}

.company-list {
  max-width: 880px;
}

.footer {
  padding: 24px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

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

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero,
  .split,
  .app-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

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

@media (max-width: 520px) {
  .brand {
    font-size: 15px;
  }

  h1 {
    font-size: 38px;
  }

  .hero-text,
  .section-content,
  .app-panel p {
    font-size: 16px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .info-list div,
  .company-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}