:root {
  --ink: #102033;
  --muted: #5c6978;
  --line: #dce5ee;
  --panel: #f5f8fb;
  --panel-strong: #eaf1f8;
  --brand: #063f86;
  --brand-2: #08a9dc;
  --accent: #ff7b1a;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(16, 32, 51, 0.08);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1160px, calc(100% - 40px));
  min-height: 74px;
  margin: 0 auto;
  gap: 24px;
}

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

.brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.brand-text {
  display: grid;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 20px;
  font-weight: 800;
  color: var(--brand);
}

.brand-text span {
  font-size: 12px;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  border-radius: 6px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 650;
  padding: 9px 12px;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--panel);
  color: var(--brand);
}

.nav-links .language-switch {
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--brand);
  padding-inline: 14px;
}

.nav-links .language-switch:hover {
  background: var(--panel);
}

.nav-links .language-switch.active {
  background: var(--brand);
  color: var(--white);
  border-color: var(--brand);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  color: var(--brand);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  padding: 8px 10px;
}

.hero {
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(6, 63, 134, 0.95), rgba(16, 32, 51, 0.9)),
    radial-gradient(circle at 80% 20%, rgba(8, 169, 220, 0.24), transparent 32%);
  color: var(--white);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  width: min(1160px, calc(100% - 40px));
  min-height: 600px;
  margin: 0 auto;
  gap: 70px;
  padding: 72px 0;
}

.eyebrow {
  color: var(--brand-2);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
  margin: 0 0 14px;
}

.hero h1,
.page-hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: 0;
  margin: 0;
}

.hero p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 18px;
  margin: 24px 0 0;
  max-width: 640px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 750;
  padding: 10px 18px;
}

.button.primary {
  background: var(--accent);
  color: var(--white);
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.34);
  color: var(--white);
}

.button.dark {
  background: var(--brand);
  color: var(--white);
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 420px;
}

.hero-visual::before {
  content: "";
  position: absolute;
  width: min(420px, 82vw);
  height: min(420px, 82vw);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
}

.hero-visual img {
  position: relative;
  width: min(340px, 70vw);
  filter: drop-shadow(0 24px 50px rgba(0, 0, 0, 0.24));
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  margin-top: 40px;
  padding-top: 26px;
  gap: 18px;
}

.metric strong {
  display: block;
  color: var(--white);
  font-size: 22px;
}

.metric span {
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.section,
.page-hero {
  padding: 86px 0;
}

.section.alt,
.page-hero {
  background: var(--panel);
}

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(260px, 0.8fr);
  align-items: end;
  gap: 48px;
  margin-bottom: 34px;
}

.section-head h2,
.page-hero h1 {
  color: var(--ink);
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.15;
  margin: 0;
}

.section-head p,
.page-hero p,
.lead {
  color: var(--muted);
  font-size: 17px;
  margin: 0;
}

.grid {
  display: grid;
  gap: 18px;
}

.grid.three {
  grid-template-columns: repeat(3, 1fr);
}

.grid.two {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  min-height: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 26px;
  box-shadow: 0 1px 0 rgba(16, 32, 51, 0.03);
}

.card strong,
.card h3 {
  display: block;
  color: var(--brand);
  font-size: 20px;
  line-height: 1.3;
  margin: 0 0 10px;
}

.card p {
  color: var(--muted);
  margin: 0;
}

.numbered {
  counter-reset: item;
}

.numbered .card {
  position: relative;
  padding-top: 58px;
}

.numbered .card::before {
  counter-increment: item;
  content: counter(item, decimal-leading-zero);
  position: absolute;
  top: 24px;
  left: 26px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 850;
}

.split {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  align-items: start;
  gap: 44px;
}

.proof-panel {
  border-left: 4px solid var(--accent);
  background: var(--panel);
  padding: 28px;
}

.proof-panel h2 {
  margin-top: 0;
}

.list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--muted);
}

.list li::before {
  content: "";
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 10px;
}

.cta-band {
  background: var(--brand);
  color: var(--white);
  padding: 54px 0;
}

.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta-band h2 {
  font-size: 30px;
  line-height: 1.2;
  margin: 0 0 8px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.74);
  margin: 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #0d1828;
  color: rgba(255, 255, 255, 0.72);
  padding: 44px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  gap: 28px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-brand img {
  width: 52px;
  height: 52px;
  object-fit: contain;
  background: var(--white);
  border-radius: 8px;
  padding: 4px;
}

.footer-brand strong {
  display: block;
  color: var(--white);
  font-size: 18px;
}

.footer-meta {
  display: grid;
  gap: 4px;
  text-align: right;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.contact-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 28px;
}

.contact-card span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 8px;
}

.contact-card strong,
.contact-card a {
  color: var(--brand);
  font-size: 20px;
  font-weight: 800;
}

@media (max-width: 860px) {
  .nav {
    min-height: 66px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border-bottom: 1px solid var(--line);
    background: var(--white);
    padding: 12px 20px 18px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px;
  }

  .hero-inner,
  .section-head,
  .split,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    min-height: auto;
    gap: 28px;
    padding: 54px 0 64px;
  }

  .hero-visual {
    min-height: 300px;
  }

  .metrics,
  .grid.three,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .section,
  .page-hero {
    padding: 58px 0;
  }

  .cta-band .container,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-meta {
    text-align: left;
  }
}

@media (max-width: 520px) {
  .nav,
  .container,
  .footer-inner {
    width: min(100% - 28px, 1160px);
  }

  .brand-text span {
    display: none;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 36px;
  }

  .hero p,
  .section-head p,
  .page-hero p,
  .lead {
    font-size: 16px;
  }
}