:root {
  --ink: #0b1f31;
  --muted: #5f7282;
  --line: #d7e3eb;
  --teal: #07848a;
  --teal-dark: #00626a;
  --blue-soft: #eaf5f9;
  --surface: #ffffff;
  --soft: #f5f9fb;
  --shadow: 0 18px 50px rgba(15, 47, 70, 0.12);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  color: var(--ink);
  background: #ffffff;
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, #ffffff 0%, #ffffff 62%, #f7fbfd 100%);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 7vw;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(215, 227, 235, 0.8);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
}

.brand-mark {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: var(--teal);
}

.brand-mark svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.brand-mark .mark-line {
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
}

.desktop-nav {
  display: flex;
  gap: 42px;
  align-items: center;
  color: #142b3d;
  font-size: 15px;
  font-weight: 650;
}

.desktop-nav a,
.footer-column a,
.text-link {
  transition: color 160ms ease;
}

.desktop-nav a:hover,
.footer-column a:hover,
.text-link:hover {
  color: var(--teal);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 18px;
  border: 1px solid var(--teal);
  border-radius: 6px;
  color: var(--teal-dark);
  font-size: 14px;
  font-weight: 700;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.section-band,
.section,
.cta-section,
.footer-main,
.footer-legal {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: 44px;
  align-items: center;
  min-height: 620px;
  padding: 54px 0 38px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(58px, 7vw, 106px);
  line-height: 0.96;
  font-weight: 850;
}

.hero-lead {
  margin: 28px 0 0;
  font-size: clamp(23px, 2.4vw, 34px);
  line-height: 1.3;
  font-weight: 780;
}

.hero-body {
  max-width: 620px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  height: 52px;
  padding: 0 24px;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 750;
  line-height: 1;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: var(--teal);
  box-shadow: 0 12px 24px rgba(7, 132, 138, 0.22);
}

.button-primary:hover {
  background: var(--teal-dark);
}

.button-secondary {
  color: var(--teal-dark);
  border: 1px solid var(--teal);
  background: #fff;
}

.button-light {
  color: var(--teal-dark);
  background: #fff;
  box-shadow: 0 14px 28px rgba(0, 38, 46, 0.18);
}

.hero-visual {
  position: relative;
  padding: 18px;
  border-radius: 8px;
  background: linear-gradient(145deg, #f8fcfd 0%, #e9f5f9 100%);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-visual::after {
  position: absolute;
  inset: auto 0 0;
  height: 70px;
  content: "";
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), #f8fcfd 80%);
  pointer-events: none;
}

.hero-visual img {
  width: 100%;
  border-radius: 6px;
}

.section {
  padding: 82px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  gap: 14px;
  margin-bottom: 34px;
}

.section-heading h2,
.cta-section h2 {
  margin: 0;
  font-size: clamp(31px, 3.6vw, 44px);
  line-height: 1.18;
}

.section-heading p,
.cta-section p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.split-heading {
  grid-template-columns: 1fr auto;
  align-items: end;
}

.text-link {
  color: var(--teal-dark);
  font-size: 15px;
  font-weight: 760;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.capability-card {
  min-height: 230px;
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.card-icon {
  display: inline-grid;
  width: 48px;
  height: 48px;
  margin-bottom: 28px;
  place-items: center;
  color: var(--teal);
}

.card-icon svg {
  width: 46px;
  height: 46px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.capability-card h3,
.solution-list h3,
.timeline h3 {
  margin: 0 0 12px;
  font-size: 19px;
  line-height: 1.35;
}

.capability-card p,
.solution-list p,
.timeline p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.solutions {
  background:
    linear-gradient(90deg, rgba(234, 245, 249, 0.78), rgba(255, 255, 255, 0) 42%),
    #fff;
}

.solution-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.solution-list article {
  min-height: 200px;
  padding: 30px 28px;
  border-right: 1px solid var(--line);
}

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

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.timeline article {
  position: relative;
  padding-top: 58px;
}

.timeline article::before {
  position: absolute;
  top: 21px;
  left: 58px;
  right: -24px;
  height: 1px;
  content: "";
  background: var(--line);
}

.timeline article:last-child::before {
  display: none;
}

.timeline span {
  position: absolute;
  top: 0;
  left: 0;
  display: inline-grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--teal);
  font-size: 14px;
  font-weight: 800;
}

.cta-section {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
  margin-top: 30px;
  padding: 44px 56px;
  color: #fff;
  border-radius: 8px;
  background: linear-gradient(135deg, #047f87, #005766);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.84);
  margin-top: 12px;
}

.site-footer {
  margin-top: 72px;
  color: #dce8ef;
  background: #0b2030;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.25fr 0.8fr 0.8fr 1fr;
  gap: 56px;
  padding: 58px 0 46px;
}

.footer-brand-logo {
  color: #fff;
}

.footer-brand p {
  max-width: 330px;
  margin: 22px 0 0;
  color: #adc1ce;
  font-size: 14px;
  line-height: 1.8;
}

.footer-column {
  display: grid;
  align-content: start;
  gap: 12px;
}

.footer-column h2 {
  margin: 0 0 8px;
  color: #fff;
  font-size: 16px;
}

.footer-column a,
.footer-column span {
  color: #adc1ce;
  font-size: 14px;
  line-height: 1.6;
}

.footer-legal {
  display: flex;
  justify-content: center;
  gap: 18px;
  padding: 20px 0;
  color: #6a7f8d;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 14px;
}

.footer-legal a:hover {
  color: #fff;
}

.mobile-panel {
  position: fixed;
  top: 72px;
  right: 16px;
  z-index: 30;
  display: none;
  width: min(260px, calc(100vw - 32px));
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.mobile-panel a {
  display: block;
  padding: 14px 12px;
  color: var(--ink);
  font-weight: 700;
}

.mobile-panel.is-open {
  display: block;
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 24px;
  }

  .desktop-nav,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 62px;
  }

  .hero-visual {
    order: -1;
  }

  .capability-grid,
  .solution-list,
  .timeline,
  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .solution-list article:nth-child(2) {
    border-right: 0;
  }

  .solution-list article:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .timeline article::before {
    display: none;
  }

  .cta-section {
    grid-template-columns: 1fr;
    padding: 36px 28px;
  }
}

@media (max-width: 640px) {
  .section-band,
  .section,
  .cta-section,
  .footer-main,
  .footer-legal {
    width: min(100% - 32px, 1180px);
  }

  .brand {
    font-size: 19px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .hero-lead {
    font-size: 24px;
  }

  .hero-body,
  .section-heading p,
  .cta-section p {
    font-size: 16px;
  }

  .hero-actions,
  .footer-legal {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .capability-grid,
  .solution-list,
  .timeline,
  .footer-main,
  .split-heading {
    grid-template-columns: 1fr;
  }

  .solution-list article {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .footer-legal {
    gap: 8px;
    text-align: center;
  }
}