:root {
  --ink: #122033;
  --muted: #667387;
  --line: #dfe6ee;
  --paper: #ffffff;
  --wash: #f4f8fb;
  --blue: #073b7a;
  --teal: #059aa7;
  --cyan: #dff7f8;
  --orange: #f27a2a;
  --green: #5ea85b;
  --shadow: 0 24px 70px rgba(20, 39, 64, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    "Segoe UI",
    Arial,
    sans-serif;
  background:
    linear-gradient(180deg, rgba(244, 248, 251, 0.88) 0%, #ffffff 34%),
    radial-gradient(circle at 82% 8%, rgba(5, 154, 167, 0.13), transparent 28%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 22px;
  align-items: center;
  min-height: 74px;
  padding: 12px clamp(18px, 4vw, 60px);
  border-bottom: 1px solid rgba(223, 230, 238, 0.82);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  width: 212px;
  height: 48px;
  overflow: hidden;
}

.brand img {
  width: 212px;
  height: 212px;
  object-fit: contain;
  transform: translateY(2px);
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 3vw, 34px);
  color: #3c4c62;
  font-size: 15px;
}

.nav a {
  padding: 10px 0;
}

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

.header-action,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 700;
  white-space: nowrap;
}

.header-action,
.primary-button {
  color: #fff;
  background: var(--blue);
}

.header-action:hover,
.primary-button:hover {
  background: #062d5d;
}

.secondary-button {
  color: var(--blue);
  border: 1px solid #b9c8d8;
  background: #fff;
}

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

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

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  gap: clamp(42px, 6vw, 90px);
  align-items: center;
  min-height: calc(100vh - 74px);
  padding: clamp(58px, 8vw, 104px) clamp(20px, 5vw, 76px) 56px;
}

.hero-copy {
  max-width: 760px;
}

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

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(44px, 6vw, 76px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 680px;
  margin-bottom: 34px;
  color: #4a596d;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.78;
}

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

.hero-visual {
  position: relative;
  min-height: 520px;
  border: 1px solid rgba(185, 200, 216, 0.86);
  border-radius: 8px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(7, 59, 122, 0.06), rgba(5, 154, 167, 0.09)),
    repeating-linear-gradient(0deg, rgba(18, 32, 51, 0.035), rgba(18, 32, 51, 0.035) 1px, transparent 1px, transparent 44px),
    repeating-linear-gradient(90deg, rgba(18, 32, 51, 0.035), rgba(18, 32, 51, 0.035) 1px, transparent 1px, transparent 44px),
    #f9fcfe;
  box-shadow: var(--shadow);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 54px;
  border: 1px solid rgba(5, 154, 167, 0.25);
  border-radius: 50%;
}

.path-line {
  position: absolute;
  left: 20%;
  bottom: 23%;
  width: 62%;
  height: 130px;
  border-bottom: 5px solid rgba(5, 154, 167, 0.8);
  border-right: 5px solid rgba(242, 122, 42, 0.85);
  border-radius: 0 0 90px 0;
  transform: skewX(-16deg);
}

.orbit-card {
  position: absolute;
  display: grid;
  gap: 8px;
  border: 1px solid rgba(185, 200, 216, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 16px 45px rgba(16, 43, 78, 0.11);
}

.main-product {
  left: 11%;
  top: 16%;
  width: min(360px, 76%);
  padding: 28px;
}

.orbit-card strong {
  font-size: 22px;
}

.orbit-card small {
  color: var(--muted);
  font-size: 14px;
}

.card-kicker,
.project-topline span,
.solution-list span,
.process-grid span {
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.orbit-card.mini {
  width: 210px;
  padding: 18px;
}

.orbit-card.mini strong {
  font-size: 17px;
}

.orbit-card.mini span {
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
}

.trip-card {
  right: 8%;
  top: 45%;
}

.medibox-card {
  left: 18%;
  bottom: 12%;
}

.metric-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 0 clamp(20px, 5vw, 76px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.metric-band div {
  min-height: 112px;
  padding: 24px;
  background: #fff;
}

.metric-band strong {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 32px;
  line-height: 1;
}

.metric-band span {
  color: var(--muted);
}

.section {
  padding: clamp(72px, 9vw, 118px) clamp(20px, 5vw, 76px);
}

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

.section-heading.compact {
  max-width: 560px;
  margin-bottom: 0;
}

.section-heading h2,
.about-section h2,
.contact-section h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.18;
  letter-spacing: 0;
}

.section-heading p,
.about-section p,
.contact-section p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

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

.project-card {
  min-height: 255px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.project-card.featured {
  grid-column: span 2;
  background:
    linear-gradient(135deg, rgba(7, 59, 122, 0.96), rgba(5, 154, 167, 0.88)),
    var(--blue);
  color: #fff;
}

.project-topline {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 22px;
}

.project-card h3,
.solution-list h3,
.capability-grid h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.32;
}

.project-card p,
.project-card li,
.solution-list p,
.capability-grid p,
.process-grid p {
  color: var(--muted);
  line-height: 1.68;
}

.project-card ul {
  padding-left: 19px;
  margin: 18px 0 0;
}

.project-card.featured .project-topline span,
.project-card.featured p,
.project-card.featured li {
  color: rgba(255, 255, 255, 0.86);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(34px, 6vw, 80px);
  background: var(--wash);
}

.solution-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.solution-list article,
.capability-grid div,
.process-grid div {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.solution-list span {
  display: block;
  margin-bottom: 18px;
  color: var(--orange);
}

.capability-section {
  background: #fff;
}

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

.capability-grid div {
  background: linear-gradient(180deg, #fff, #f9fcfe);
}

.process-section {
  background: var(--ink);
  color: #fff;
}

.process-section .eyebrow,
.process-grid span {
  color: #7bdde2;
}

.process-section .section-heading {
  margin-bottom: 34px;
}

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

.process-grid div {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
}

.process-grid p {
  color: rgba(255, 255, 255, 0.72);
}

.about-section,
.contact-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 6vw, 80px);
  align-items: start;
}

.contact-section {
  margin: 0 clamp(20px, 5vw, 76px) clamp(34px, 5vw, 70px);
  padding: clamp(42px, 6vw, 70px);
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7, 59, 122, 0.97), rgba(5, 154, 167, 0.86)),
    var(--blue);
}

.contact-section .eyebrow,
.contact-section p {
  color: rgba(255, 255, 255, 0.8);
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
}

.contact-lines {
  display: grid;
  gap: 12px;
}

.contact-lines span {
  font-weight: 800;
}

.contact-lines a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  color: #fff;
  word-break: break-word;
}

.qr-block {
  display: grid;
  justify-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin: 0;
}

.qr-block img {
  width: 132px;
  height: 132px;
  padding: 8px;
  border-radius: 8px;
  background: #fff;
  object-fit: contain;
}

.qr-block figcaption {
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(20px, 5vw, 76px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.footer a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
}

@media (max-width: 1080px) {
  .hero,
  .split-section,
  .about-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 450px;
  }

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

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

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
  }

  .brand {
    width: 174px;
  }

  .brand img {
    width: 174px;
    height: 174px;
  }

  .nav {
    position: fixed;
    inset: 74px 14px auto;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 10px 18px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow);
  }

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

  .nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .nav a:last-child {
    border-bottom: 0;
  }

  .header-action {
    display: none;
  }

  .menu-button {
    display: block;
    grid-column: 3;
  }

  .hero {
    padding-top: 46px;
  }

  .hero-visual {
    min-height: 390px;
  }

  .main-product {
    left: 8%;
    top: 12%;
  }

  .trip-card {
    right: 7%;
    top: 48%;
  }

  .medibox-card {
    left: 8%;
    bottom: 8%;
  }

  .metric-band,
  .project-grid,
  .solution-list,
  .capability-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .project-card.featured {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding-inline: 14px;
  }

  .brand {
    width: 150px;
    height: 44px;
  }

  .brand img {
    width: 150px;
    height: 150px;
  }

  h1 {
    font-size: 40px;
  }

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

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .hero-visual {
    min-height: 370px;
  }

  .orbit-card.mini {
    width: 184px;
  }

  .metric-band {
    margin-inline: 14px;
  }

  .section {
    padding-inline: 16px;
  }

  .contact-section {
    margin-inline: 16px;
    padding: 30px 20px;
  }

  .contact-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .qr-block {
    justify-items: start;
  }

  .footer {
    flex-direction: column;
  }
}