:root {
  --ink: #102033;
  --muted: #5f6f82;
  --line: #dce5ef;
  --blue: #12a8df;
  --blue-dark: #0873a8;
  --green: #2fa66a;
  --yellow: #f2b84b;
  --bg: #f6f9fc;
  --white: #ffffff;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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;
  min-height: 72px;
  padding: 12px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(220, 229, 239, 0.86);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.brand-mark {
  display: grid;
  width: 50px;
  height: 38px;
  place-items: center;
  overflow: hidden;
  background: transparent;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
}

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

.brand small {
  margin-top: -3px;
  color: var(--muted);
  font-size: 11px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 6px 22px;
  color: #31465c;
  font-size: 14px;
}

.nav a:hover,
.nav-menu-trigger:hover {
  color: var(--blue-dark);
}

.nav-menu {
  position: relative;
}

.nav-menu-trigger {
  padding: 0;
  color: inherit;
  font: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.nav-menu-trigger::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 8px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: translateY(-3px) rotate(45deg);
}

.nav-menu-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  min-width: 168px;
  padding: 8px;
  visibility: hidden;
  opacity: 0;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 16px 34px rgba(16, 32, 51, 0.12);
  transform: translateY(-4px);
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s ease;
}

.nav-menu:hover .nav-menu-panel,
.nav-menu:focus-within .nav-menu-panel {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.nav-menu-panel a {
  display: block;
  padding: 9px 10px;
  white-space: nowrap;
}

.nav-menu-panel a:hover {
  background: var(--bg);
}

.hero {
  position: relative;
  min-height: 690px;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: #07324a;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 54, 79, 0.94) 0%, rgba(12, 113, 158, 0.76) 48%, rgba(7, 24, 39, 0.32) 100%),
    url("./assets/hero.jpeg") center / cover;
}

.hero-content {
  position: relative;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 104px 0 96px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #9ee8ff;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: clamp(48px, 8vw, 96px);
  line-height: 1.05;
  font-weight: 800;
}

.hero-lead {
  max-width: 700px;
  margin-bottom: 34px;
  color: #d7edf6;
  font-size: clamp(20px, 3vw, 32px);
  line-height: 1.35;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  font-weight: 700;
}

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

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.58);
}

.section {
  padding: 92px clamp(20px, 5vw, 72px);
}

.section-heading {
  width: min(1120px, 100%);
  margin: 0 auto 36px;
}

.section-heading.compact {
  margin-bottom: 28px;
}

h2 {
  max-width: 820px;
  font-size: clamp(30px, 4vw, 50px);
  line-height: 1.16;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.28;
}

p {
  color: var(--muted);
}

.intro {
  background: var(--white);
}

.intro-grid,
.strategy-grid,
.value-grid,
.deployment-grid {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 22px;
}

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

.intro-grid article,
.feature-panel,
.value-grid article,
.deployment-grid article {
  border: 1px solid var(--line);
  background: var(--white);
  padding: 28px;
}

.strategy {
  background: var(--bg);
}

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

.feature-panel img,
.deployment-grid img {
  width: 44px;
  height: 44px;
  margin-bottom: 18px;
}

.product-band {
  background: #0f2537;
  color: var(--white);
}

.product-band p {
  color: #c8d7e5;
}

.media-copy,
.quote-layout {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
  align-items: center;
  gap: clamp(28px, 5vw, 68px);
}

.media-frame {
  min-height: 360px;
  overflow: hidden;
}

.media-frame img,
.quote-layout img,
.future img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.capability-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.capability-list span {
  padding: 8px 12px;
  color: #d9f6ff;
  border: 1px solid rgba(158, 232, 255, 0.34);
}

.product-link {
  margin-top: 26px;
}

.platform {
  background: var(--white);
}

.platform-grid {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.platform-grid div {
  min-height: 136px;
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.platform-grid strong,
.platform-grid span {
  display: block;
}

.platform-grid span {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}

.quotation {
  background: var(--bg);
}

.quote-layout {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.75fr);
}

.quote-layout img {
  aspect-ratio: 4 / 3;
}

.text-link {
  display: inline-flex;
  margin-top: 18px;
  color: var(--blue-dark);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.quote-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.quote-highlights span {
  padding: 8px 12px;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 700;
  background: #e7f7fd;
  border: 1px solid #bce9f7;
}

.section-subhead {
  width: min(1120px, 100%);
  margin: 44px auto 20px;
}

.section-subhead h3 {
  margin-bottom: 8px;
  font-size: clamp(24px, 3vw, 34px);
}

.challenge-grid,
.quote-capabilities,
.workflow-strip {
  width: min(1120px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.challenge-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.challenge-grid article {
  min-height: 168px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
}

.challenge-grid strong {
  display: block;
  margin-bottom: 10px;
  font-size: 17px;
  line-height: 1.35;
}

.challenge-grid p {
  margin-bottom: 0;
  font-size: 14px;
}

.value-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 34px;
}

.quote-capabilities {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
}

.quote-capabilities article {
  min-height: 260px;
  padding: 24px;
  background: var(--white);
}

.quote-capabilities span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  color: var(--white);
  font-weight: 800;
  background: var(--green);
}

.quote-capabilities h3 {
  font-size: 20px;
}

.quote-capabilities p {
  margin-bottom: 0;
  font-size: 14px;
}

.workflow-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 30px;
  border-top: 3px solid var(--blue);
  background: var(--white);
}

.workflow-strip div {
  min-height: 136px;
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.workflow-strip div:last-child {
  border-right: 0;
}

.workflow-strip strong,
.workflow-strip span {
  display: block;
}

.workflow-strip strong {
  margin-bottom: 8px;
  font-size: 18px;
}

.workflow-strip span {
  color: var(--muted);
  font-size: 14px;
}

.architecture {
  background: var(--white);
}

.architecture-list {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.architecture-list li {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 18px;
  align-items: center;
  padding: 18px 22px;
  border-left: 4px solid var(--blue);
  background: var(--bg);
}

.architecture-list span {
  color: var(--muted);
}

.deployment {
  background: #eef7fb;
}

.deployment-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.future {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: center;
  padding: 0 clamp(20px, 5vw, 72px) 96px;
  background: #0f2537;
  color: var(--white);
}

.future img {
  min-height: 420px;
}

.future p {
  color: #c8d7e5;
}

.contact-line {
  margin: 18px 0 6px;
  color: #e8f7ff;
  font-weight: 700;
}

.contact-line a {
  color: #9ee8ff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.future .button {
  margin-top: 12px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: #d9e8f2;
  background: #071827;
}

.site-footer span {
  color: #8fa7ba;
}

.product-hero {
  padding: 112px clamp(20px, 5vw, 72px) 84px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(7, 36, 55, 0.94), rgba(18, 168, 223, 0.78)),
    url("./assets/hero.jpeg") center / cover;
}

.product-hero > * {
  width: min(1120px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.product-hero h1 {
  margin-bottom: 16px;
  font-size: clamp(42px, 6vw, 72px);
}

.product-hero .hero-lead {
  color: #d7edf6;
}

.quotation-hero {
  background:
    linear-gradient(90deg, rgba(7, 36, 55, 0.94), rgba(47, 166, 106, 0.78)),
    url("./assets/quotation.jpeg") center / cover;
}

.product-capabilities {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-note {
  background: #fff8eb;
}

.legal-page .section {
  background: var(--white);
}

.legal-content {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 32px;
  border: 1px solid var(--line);
  background: var(--white);
}

.legal-content h2 {
  margin-top: 28px;
  font-size: 24px;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content a,
.product-page a:not(.button) {
  color: var(--blue-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 860px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

  .nav-menu-panel {
    right: auto;
    left: 0;
  }

  .hero {
    min-height: 620px;
  }

  .intro-grid,
  .strategy-grid,
  .media-copy,
  .quote-layout,
  .challenge-grid,
  .value-grid,
  .quote-capabilities,
  .workflow-strip,
  .product-capabilities,
  .deployment-grid,
  .future {
    grid-template-columns: 1fr;
  }

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

  .future {
    padding-top: 64px;
  }

  .future img {
    min-height: 280px;
  }
}

@media (max-width: 560px) {
  .section {
    padding: 68px 18px;
  }

  .hero-content {
    width: calc(100% - 36px);
  }

  .button {
    width: 100%;
  }

  .platform-grid,
  .architecture-list li {
    grid-template-columns: 1fr;
  }

  .intro-grid article,
  .feature-panel,
  .challenge-grid article,
  .value-grid article,
  .quote-capabilities article,
  .workflow-strip div,
  .deployment-grid article {
    padding: 22px;
  }
}