:root {
  color-scheme: light;
  --ink: #1d2935;
  --muted: #647181;
  --line: #dde4ea;
  --soft: #f5f7f9;
  --panel: #ffffff;
  --blue: #244c7a;
  --green: #4d7c65;
  --gold: #b88944;
  --shadow: 0 18px 42px rgba(29, 41, 53, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font-family:
    Inter,
    "PingFang SC",
    "Microsoft YaHei",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.65;
  background: #f7f8f9;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(247, 248, 249, 0.94);
  border-bottom: 1px solid rgba(219, 227, 234, 0.8);
  backdrop-filter: blur(18px);
}

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

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  font-weight: 800;
  background: #244c7a;
  border-radius: 6px;
}

.brand strong,
.brand small {
  display: block;
  white-space: nowrap;
}

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

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

.nav {
  display: flex;
  gap: 22px;
  color: #465564;
  font-size: 14px;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.78fr);
  gap: clamp(32px, 5vw, 70px);
  align-items: center;
  min-height: calc(94svh - 75px);
  padding: clamp(58px, 8vw, 94px) clamp(20px, 5vw, 72px) 76px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(36, 76, 122, 0.055), rgba(77, 124, 101, 0.04) 52%, transparent),
    #f7f8f9;
}

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

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

h1 {
  max-width: 740px;
  margin-bottom: 24px;
  font-size: clamp(38px, 5.1vw, 64px);
  line-height: 1.12;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 700px;
  margin-bottom: 30px;
  color: #465564;
  font-size: clamp(17px, 1.8vw, 21px);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
}

.button.primary {
  color: #fff;
  border-color: transparent;
  background: var(--blue);
  box-shadow: 0 10px 22px rgba(36, 76, 122, 0.18);
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
}

.stats-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 780px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.84);
}

.stats-strip div {
  padding: 18px;
}

.stats-strip div + div {
  border-left: 1px solid var(--line);
}

.stats-strip dt {
  margin-bottom: 4px;
  font-weight: 800;
}

.stats-strip dd {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  min-height: 470px;
}

.service-brief,
.info-panel,
.service-card {
  border: 1px solid rgba(219, 227, 234, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.service-brief {
  position: absolute;
  right: 0;
  top: 50%;
  width: min(100%, 520px);
  padding: 30px;
  transform: translateY(-50%);
}

.service-brief::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  content: "";
  background: linear-gradient(90deg, var(--blue), var(--green), var(--gold));
  border-radius: 8px 8px 0 0;
}

.brief-head {
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.brief-label {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 5px 10px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  background: #edf2f6;
  border-radius: 4px;
}

.brief-head strong {
  display: block;
  margin-bottom: 8px;
  font-size: 24px;
  line-height: 1.25;
}

.brief-head p,
.brief-list p {
  margin: 0;
  color: var(--muted);
}

.brief-list {
  display: grid;
  gap: 0;
}

.brief-list div {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  column-gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.brief-list span {
  grid-row: span 2;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  background: var(--ink);
  border-radius: 5px;
}

.brief-list strong {
  margin-bottom: 4px;
  font-size: 18px;
}

.brief-footer {
  display: grid;
  gap: 8px;
  padding-top: 20px;
  color: #465564;
  font-size: 14px;
}

.section {
  padding: 88px clamp(20px, 5vw, 72px);
}

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

.section-heading h2,
.split h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.15;
}

.section-heading p,
.split p {
  color: var(--muted);
  font-size: 17px;
}

.section-heading.compact {
  margin-bottom: 24px;
}

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

.service-card {
  padding: 26px;
}

.service-card.featured {
  border-color: rgba(77, 124, 101, 0.34);
  background: #ffffff;
}

.service-icon {
  display: inline-grid;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  place-items: center;
  color: #fff;
  font-weight: 800;
  background: var(--ink);
  border-radius: 6px;
}

.service-card h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.service-card p,
.service-card li {
  color: #526071;
}

.service-card ul {
  display: grid;
  gap: 10px;
  padding-left: 18px;
  margin: 20px 0 0;
}

.surface {
  background: #17212b;
}

.surface .eyebrow {
  color: #9ccbb7;
}

.surface h2,
.surface h3 {
  color: #fff;
}

.scenario-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.16);
}

.scenario-list div {
  min-height: 210px;
  padding: 24px;
  background: #1d2a35;
}

.scenario-list p {
  margin: 0;
  color: #c3d0db;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(360px, 0.52fr);
  gap: 34px;
  align-items: start;
}

.info-panel {
  padding: 26px;
}

.info-panel h3 {
  margin-bottom: 18px;
  font-size: 22px;
}

.info-panel dl {
  display: grid;
  gap: 16px;
  margin: 0;
}

.info-panel div {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.info-panel div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.info-panel dt {
  color: var(--muted);
  font-size: 13px;
}

.info-panel dd {
  margin: 4px 0 0;
  font-weight: 700;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: #d9e4ec;
  background: #121a22;
}

.site-footer div {
  display: grid;
  gap: 6px;
}

.site-footer span,
.site-footer a {
  color: #aebdcc;
  font-size: 14px;
}

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

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: auto;
  }

  .service-brief {
    position: static;
    width: 100%;
    transform: none;
  }

  .service-grid,
  .scenario-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .nav {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }

  .brand strong,
  .brand small {
    white-space: normal;
  }

  .stats-strip,
  .service-grid,
  .scenario-list {
    grid-template-columns: 1fr;
  }

  .stats-strip div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .service-brief {
    padding: 24px;
  }

  .site-footer {
    flex-direction: column;
  }
}