:root {
  --bg: #f5f8fb;
  --panel: #ffffff;
  --panel-soft: #f8fbfe;
  --text: #0c1f35;
  --muted: #52657b;
  --line: #d9e3ee;
  --line-strong: #bdccdc;
  --brand: #0b73d9;
  --brand-dark: #075cae;
  --cyan: #18bfd0;
  --red: #d71935;
  --orange: #ee920f;
  --green: #1f9254;
  --shadow: 0 18px 42px rgba(20, 38, 62, 0.08);
  --shadow-soft: 0 10px 24px rgba(20, 38, 62, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  letter-spacing: 0;
}

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

img {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(210px, 320px) minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  min-height: 76px;
  padding: 12px 56px;
  border-bottom: 1px solid rgba(217, 227, 238, 0.86);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  min-width: 0;
}

.brand img {
  display: block;
  width: 292px;
  max-height: 52px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 24px;
  color: #334d69;
  font-weight: 800;
  white-space: nowrap;
}

.nav a:hover,
.site-footer a:hover,
.contact-list a:hover {
  color: var(--brand);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border: 1px solid var(--brand);
  border-radius: 8px;
  font-weight: 900;
  white-space: nowrap;
}

.header-cta {
  padding: 8px 14px;
  background: var(--brand);
  color: #ffffff;
}

.header-cta:hover,
.button.primary:hover {
  border-color: var(--brand-dark);
  background: var(--brand-dark);
}

.button {
  min-width: 148px;
  padding: 10px 18px;
}

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

.button.secondary {
  border-color: var(--line-strong);
  background: #ffffff;
  color: #243c56;
}

.button.secondary:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(100vh - 168px);
  min-height: calc(100svh - 168px);
  padding: 76px 56px;
  overflow: hidden;
  border-bottom: 1px solid rgba(217, 227, 238, 0.9);
  background:
    linear-gradient(90deg, rgba(245, 248, 251, 0.99) 0%, rgba(245, 248, 251, 0.96) 44%, rgba(245, 248, 251, 0.72) 70%, rgba(245, 248, 251, 0.92) 100%),
    url("assets/cover-visual.png") right bottom / min(62vw, 960px) auto no-repeat;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.eyebrow,
.section-label {
  margin: 0;
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
}

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

h1 {
  max-width: 720px;
  margin-top: 16px;
  color: #071b32;
  font-size: 64px;
  line-height: 1.08;
}

.hero-copy {
  max-width: 680px;
  margin-top: 22px;
  color: #3f566f;
  font-size: 20px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 1180px;
  margin: -44px auto 0;
  padding: 0 20px;
  position: relative;
  z-index: 2;
}

.proof-strip div {
  min-height: 118px;
  padding: 22px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.proof-strip div:first-child {
  border-radius: 8px 0 0 8px;
}

.proof-strip div:last-child {
  border-radius: 0 8px 8px 0;
}

.proof-strip strong {
  display: block;
  color: #0d2746;
  font-size: 18px;
}

.proof-strip span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.65;
}

.section {
  padding: 86px 56px;
}

.band {
  border-top: 1px solid rgba(217, 227, 238, 0.78);
  border-bottom: 1px solid rgba(217, 227, 238, 0.78);
  background: #ffffff;
}

.section-head {
  max-width: 820px;
}

.section-head h2,
.contact-copy h2 {
  margin-top: 12px;
  color: #0a213c;
  font-size: 38px;
  line-height: 1.22;
}

.section-head p:not(.section-label),
.contact-copy > p {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.75;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.scenario-card,
.capability-grid article,
.delivery-steps article,
.case-card,
.qr-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.scenario-card {
  overflow: hidden;
}

.scenario-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1.42;
  object-fit: cover;
  background: var(--panel-soft);
}

.scenario-card div {
  padding: 20px;
}

.scenario-card span {
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
}

.scenario-card h3,
.capability-grid h3,
.delivery-steps h3,
.case-card h3 {
  margin-top: 10px;
  color: #10263f;
  font-size: 19px;
  line-height: 1.35;
}

.scenario-card p,
.capability-grid p,
.delivery-steps p,
.case-card p {
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.7;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.capability-grid article {
  min-height: 206px;
  padding: 24px;
}

.capability-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #e8f3ff;
  color: var(--brand);
  font-weight: 900;
}

.delivery-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.delivery-steps article {
  min-height: 230px;
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.delivery-steps span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #0e2949;
  color: #ffffff;
  font-weight: 900;
}

.delivery-steps article:nth-child(2) span {
  background: var(--brand);
}

.delivery-steps article:nth-child(3) span {
  background: var(--cyan);
}

.delivery-steps article:nth-child(4) span {
  background: var(--green);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.case-card {
  overflow: hidden;
}

.case-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1.45;
  object-fit: cover;
  object-position: left top;
  border-bottom: 1px solid var(--line);
}

.case-card div {
  padding: 20px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  gap: 56px;
  align-items: start;
  padding: 88px 56px;
  background: #0d2138;
  color: #ffffff;
}

.contact-copy {
  max-width: 840px;
}

.contact-copy h2 {
  color: #ffffff;
}

.contact-copy > p,
.contact-list dt {
  color: #b8c7d8;
}

.contact-list {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
}

.contact-list div {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 14px;
}

.contact-list dt {
  font-weight: 900;
}

.contact-list dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.contact-list a {
  color: #8fd9ff;
  font-weight: 900;
}

.qr-card {
  padding: 14px;
  background: #ffffff;
  color: var(--text);
  text-align: center;
}

.qr-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 6px;
  object-fit: cover;
}

.qr-card strong {
  display: block;
  margin-top: 12px;
  font-size: 18px;
}

.qr-card span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 66px;
  padding: 18px 56px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: #081828;
  color: #afbdcc;
  font-size: 14px;
}

@media (max-width: 1180px) {
  .site-header {
    grid-template-columns: minmax(200px, 280px) minmax(0, 1fr);
  }

  .header-cta {
    display: none;
  }

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

  .capability-grid,
  .case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-header {
    position: static;
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 14px 18px;
  }

  .brand img {
    width: min(310px, 100%);
  }

  .nav {
    justify-content: flex-start;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .nav a {
    flex: 0 0 auto;
    padding: 6px 8px;
  }

  .hero {
    align-items: flex-start;
    min-height: auto;
    padding: 128px 22px 48px;
    background:
      linear-gradient(180deg, rgba(245, 248, 251, 0.92), rgba(245, 248, 251, 0.98)),
      url("assets/cover-visual.png") center 10px / min(94vw, 520px) auto no-repeat;
  }

  h1 {
    font-size: 42px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .proof-strip {
    grid-template-columns: 1fr;
    margin-top: 0;
    padding: 0;
  }

  .proof-strip div,
  .proof-strip div:first-child,
  .proof-strip div:last-child {
    border-radius: 0;
    box-shadow: none;
  }

  .section,
  .contact-section {
    padding: 58px 22px;
  }

  .section-head h2,
  .contact-copy h2 {
    font-size: 30px;
  }

  .scenario-grid,
  .capability-grid,
  .delivery-steps,
  .case-grid,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .qr-card {
    max-width: 270px;
  }

  .site-footer {
    display: grid;
    padding: 18px 22px;
  }
}

@media (max-width: 520px) {
  h1 {
    font-size: 34px;
  }

  .hero {
    padding-top: 108px;
  }

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

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