:root {
  color-scheme: light;
  --ink: #101820;
  --muted: #5b6773;
  --line: rgba(16, 24, 32, 0.12);
  --paper: #f7f9fb;
  --white: #ffffff;
  --cyan: #0a8fae;
  --teal: #0f766e;
  --amber: #c78a22;
  --steel: #253341;
  --shadow: 0 24px 80px rgba(26, 45, 66, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial,
    sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 64px);
  background: rgba(247, 249, 251, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 215px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(10, 143, 174, 0.98), rgba(15, 118, 110, 0.96)),
    var(--cyan);
  box-shadow: 0 10px 26px rgba(10, 143, 174, 0.25);
  font-weight: 800;
}

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

.brand strong {
  font-size: 16px;
  letter-spacing: 0;
}

.brand small {
  margin-top: 1px;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 3vw, 34px);
  color: rgba(16, 24, 32, 0.74);
  font-size: 14px;
}

.nav-links a {
  padding: 8px 0;
}

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

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 6px;
  font-weight: 700;
  white-space: nowrap;
}

.nav-cta {
  color: var(--white);
  background: var(--ink);
  font-size: 14px;
}

.hero {
  position: relative;
  min-height: 94vh;
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: 132px clamp(20px, 5vw, 64px) 84px;
  background: #dfeaf0;
}

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

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% center;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(247, 249, 251, 0.98) 0%, rgba(247, 249, 251, 0.9) 35%, rgba(247, 249, 251, 0.36) 63%, rgba(247, 249, 251, 0.14) 100%),
    linear-gradient(180deg, rgba(247, 249, 251, 0.52), rgba(247, 249, 251, 0.1) 48%, rgba(247, 249, 251, 0.88));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(720px, 100%);
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 610px;
  margin: 26px 0 0;
  color: rgba(16, 24, 32, 0.78);
  font-size: clamp(17px, 2vw, 22px);
}

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

.button.primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--cyan), var(--teal));
  box-shadow: 0 16px 38px rgba(10, 143, 174, 0.24);
}

.button.secondary {
  border: 1px solid rgba(16, 24, 32, 0.18);
  background: rgba(255, 255, 255, 0.68);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 650px;
  margin: 54px 0 0;
}

.hero-metrics div {
  min-height: 96px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 16px 48px rgba(26, 45, 66, 0.1);
  backdrop-filter: blur(14px);
}

.hero-metrics dt {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
}

.hero-metrics dd {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 92px clamp(20px, 5vw, 64px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading h2,
.intro h2,
.cta-section h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.14;
  letter-spacing: 0;
}

.intro {
  background: var(--white);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(28px, 6vw, 92px);
  align-items: start;
}

.intro p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature-card {
  min-height: 290px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 18px 60px rgba(26, 45, 66, 0.07);
}

.feature-icon {
  display: inline-grid;
  place-items: center;
  min-width: 52px;
  height: 34px;
  padding: 0 10px;
  border-radius: 6px;
  color: var(--cyan);
  background: rgba(10, 143, 174, 0.09);
  font-size: 13px;
  font-weight: 900;
}

.feature-card h3,
.advantage-list h3,
.timeline h3 {
  margin: 24px 0 10px;
  font-size: 21px;
  line-height: 1.25;
}

.feature-card p,
.advantage-list p,
.timeline p,
.cta-section p {
  margin: 0;
  color: var(--muted);
}

.band {
  padding: 96px clamp(20px, 5vw, 64px);
  color: var(--white);
  background:
    radial-gradient(circle at 8% 10%, rgba(199, 138, 34, 0.26), transparent 28%),
    linear-gradient(135deg, #0f1a22 0%, #223343 52%, #0b5f69 100%);
}

.band .section-kicker,
.band p {
  color: rgba(255, 255, 255, 0.72);
}

.band-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.advantage-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
}

.advantage-list article {
  min-height: 230px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.06);
}

.advantage-list h3 {
  margin-top: 0;
}

.process {
  background: var(--white);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.timeline li {
  position: relative;
  min-height: 218px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, #f5f8fa);
}

.timeline span {
  color: var(--amber);
  font-size: 15px;
  font-weight: 900;
}

.cta-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  gap: 32px;
  align-items: center;
  margin: 0 clamp(20px, 5vw, 64px) 84px;
  padding: clamp(34px, 5vw, 58px);
  border-radius: 8px;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(16, 24, 32, 0.94), rgba(18, 92, 104, 0.94)),
    var(--steel);
  box-shadow: var(--shadow);
}

.cta-section .section-kicker,
.cta-section p {
  color: rgba(255, 255, 255, 0.72);
}

.cta-section p {
  max-width: 690px;
  margin-top: 18px;
}

.contact-panel {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.contact-panel p {
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.64);
}

.contact-panel strong {
  display: block;
  font-size: 22px;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.contact-panel span {
  display: block;
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 26px clamp(20px, 5vw, 64px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--white);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
}

.footer-links a:hover {
  color: var(--ink);
}

@media (max-width: 980px) {
  .site-header {
    position: sticky;
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .hero {
    min-height: auto;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(247, 249, 251, 0.98), rgba(247, 249, 251, 0.78)),
      linear-gradient(180deg, rgba(247, 249, 251, 0.25), rgba(247, 249, 251, 0.9));
  }

  .intro-grid,
  .cta-section {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .advantage-list,
  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    gap: 14px;
    padding: 14px 18px;
  }

  .brand {
    min-width: 0;
  }

  .brand small,
  .nav-cta {
    display: none;
  }

  .hero {
    padding: 72px 20px 54px;
  }

  .hero h1 {
    font-size: clamp(38px, 12vw, 54px);
  }

  .hero-metrics,
  .feature-grid,
  .advantage-list,
  .timeline {
    grid-template-columns: 1fr;
  }

  .hero-metrics div,
  .feature-card,
  .advantage-list article,
  .timeline li {
    min-height: auto;
  }

  .section,
  .band {
    padding: 64px 20px;
  }

  .cta-section {
    margin: 0 20px 54px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-links {
    justify-content: flex-start;
  }
}