:root {
  --bg: #f5f0e8;
  --bg-strong: #ece1d2;
  --surface: rgba(255, 252, 246, 0.8);
  --surface-solid: #fffaf3;
  --ink: #18202a;
  --muted: #58616d;
  --line: rgba(24, 32, 42, 0.12);
  --brand: #0d4b7a;
  --brand-deep: #0a2f4a;
  --accent: #d9722e;
  --accent-soft: #f3c7a7;
  --shadow: 0 20px 50px rgba(13, 36, 58, 0.12);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(217, 114, 46, 0.18), transparent 28rem),
    radial-gradient(circle at top right, rgba(13, 75, 122, 0.18), transparent 22rem),
    linear-gradient(180deg, #fbf5ee 0%, #f3eadf 100%);
  font: 16px/1.65 "Avenir Next", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background-image:
    linear-gradient(rgba(24, 32, 42, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 32, 42, 0.02) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent);
}

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

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

.site-shell {
  min-height: 100vh;
}

.topbar {
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(10, 47, 74, 0.92);
  color: rgba(255, 255, 255, 0.86);
}

.topbar-inner,
.site-header-inner,
.page-section,
.site-footer-inner {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0;
  font-size: 0.85rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(22px);
  background: rgba(251, 245, 238, 0.86);
  border-bottom: 1px solid rgba(24, 32, 42, 0.08);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.95rem;
}

.brand img {
  width: 62px;
  height: 48px;
  object-fit: contain;
}

.brand-mark {
  display: grid;
  gap: 0.1rem;
}

.brand-name {
  font-family: "Hiragino Sans GB", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.brand-tagline {
  color: var(--muted);
  font-size: 0.85rem;
}

.nav-toggle {
  display: none;
  border: 0;
  background: var(--brand-deep);
  color: #fff;
  padding: 0.75rem 0.95rem;
  border-radius: 999px;
  font: inherit;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.site-nav a {
  padding: 0.7rem 1rem;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 600;
  transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  transform: translateY(-1px);
}

.page-section {
  padding: 4.25rem 0;
}

.section-heading {
  display: grid;
  gap: 0.9rem;
  max-width: 46rem;
  margin-bottom: 2rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: fit-content;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(13, 75, 122, 0.1);
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-heading h1,
.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4.5rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.section-heading h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.section-heading p,
.lede,
.card p,
.split-copy p,
.contact-panel p {
  margin: 0;
  color: var(--muted);
}

.hero {
  padding-top: 3rem;
}

.hero-grid,
.split-layout,
.contact-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  align-items: stretch;
}

.hero-copy {
  display: grid;
  gap: 1.35rem;
}

.hero-copy .section-heading {
  margin-bottom: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 3.25rem;
  padding: 0 1.2rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.button {
  background: linear-gradient(135deg, var(--accent), #c95b1e);
  color: #fff;
  box-shadow: 0 16px 36px rgba(217, 114, 46, 0.26);
}

.button-secondary {
  background: transparent;
  color: var(--brand-deep);
  border: 1px solid rgba(10, 47, 74, 0.16);
}

.button:hover,
.button-secondary:hover {
  transform: translateY(-2px);
}

.hero-badges,
.chip-list,
.application-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-badges span,
.chip-list span,
.application-list span {
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(24, 32, 42, 0.08);
  font-size: 0.92rem;
}

.hero-panel,
.glass-panel,
.card,
.contact-panel,
.timeline-item,
.stat-card,
.promise-list li,
.note-list li {
  border: 1px solid rgba(24, 32, 42, 0.08);
  background: var(--surface);
  backdrop-filter: blur(24px);
  box-shadow: var(--shadow);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  min-height: 100%;
}

.hero-media {
  aspect-ratio: 16 / 10;
  width: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.25rem;
  background: linear-gradient(180deg, rgba(10, 47, 74, 0), rgba(10, 47, 74, 0.88));
  color: #fff;
}

.hero-overlay strong {
  display: block;
  font-size: 1.1rem;
}

.stats-grid,
.card-grid,
.case-grid,
.capability-grid {
  display: grid;
  gap: 1rem;
}

.stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 1.5rem;
}

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

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

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

.stat-card,
.card,
.contact-panel,
.timeline-item {
  border-radius: var(--radius-md);
}

.stat-card {
  padding: 1.25rem;
}

.stat-card strong {
  display: block;
  color: var(--brand-deep);
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.05em;
}

.stat-card span {
  display: inline-block;
  margin-top: 0.5rem;
  color: var(--muted);
}

.card {
  display: grid;
  gap: 1rem;
  padding: 1.5rem;
}

.card h3,
.timeline-item h3,
.contact-panel h2,
.contact-panel h3 {
  margin: 0;
  font-size: 1.15rem;
}

.series-pill {
  width: fit-content;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(13, 75, 122, 0.1);
  color: var(--brand);
  font-size: 0.8rem;
  font-weight: 800;
}

.product-visual {
  position: relative;
  min-height: 8.5rem;
  border-radius: 1.1rem;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(13, 75, 122, 0.88), rgba(217, 114, 46, 0.82)),
    linear-gradient(90deg, rgba(255, 255, 255, 0.16), transparent);
}

.product-visual::before,
.product-visual::after {
  position: absolute;
  content: "";
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
}

.product-visual::before {
  width: 13rem;
  height: 13rem;
  right: -3.5rem;
  top: -5rem;
}

.product-visual::after {
  width: 7rem;
  height: 7rem;
  left: 1rem;
  bottom: -2.8rem;
}

.product-visual span {
  position: absolute;
  left: 1.2rem;
  bottom: 1.1rem;
  color: #fff;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.feature-list,
.promise-list,
.note-list,
.contact-list,
.timeline-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list,
.contact-list {
  display: grid;
  gap: 0.6rem;
}

.feature-list li,
.contact-list li {
  position: relative;
  padding-left: 1rem;
  color: var(--muted);
}

.feature-list li::before,
.contact-list li::before {
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 999px;
  content: "";
  background: var(--accent);
}

.split-layout,
.contact-layout {
  align-items: start;
}

.glass-panel {
  border-radius: var(--radius-lg);
  padding: 1.6rem;
}

.split-copy {
  display: grid;
  gap: 1rem;
}

.timeline-list {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  padding: 1.3rem;
}

.timeline-item span {
  display: inline-block;
  margin-bottom: 0.55rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.case-card {
  overflow: hidden;
  padding: 0;
}

.case-image {
  aspect-ratio: 16 / 9;
  width: 100%;
  object-fit: cover;
}

.case-body {
  display: grid;
  gap: 0.95rem;
  padding: 1.4rem;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.contact-panel {
  padding: 1.6rem;
}

.contact-panel strong {
  color: var(--brand-deep);
}

.contact-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 1.6rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(10, 47, 74, 0.98), rgba(13, 75, 122, 0.82));
  color: #fff;
}

.contact-banner img {
  width: min(16rem, 46%);
}

.promise-list,
.note-list {
  display: grid;
  gap: 0.9rem;
}

.promise-list li,
.note-list li {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-sm);
}

.site-footer {
  margin-top: 2rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid rgba(24, 32, 42, 0.08);
}

.site-footer-inner {
  display: grid;
  gap: 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 1.2rem;
}

.footer-card {
  padding: 1.4rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(24, 32, 42, 0.08);
}

.footer-card h3 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
}

.footer-meta {
  color: var(--muted);
  font-size: 0.92rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 500ms ease, transform 500ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid,
  .split-layout,
  .contact-layout,
  .footer-grid,
  .stats-grid,
  .card-grid,
  .case-grid,
  .capability-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    inset: calc(100% + 0.4rem) 1rem auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.9rem;
    border-radius: 1.2rem;
    background: rgba(255, 250, 243, 0.98);
    border: 1px solid rgba(24, 32, 42, 0.08);
    box-shadow: var(--shadow);
  }

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

  .topbar-inner,
  .site-header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header-inner {
    position: relative;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .page-section {
    padding: 3.25rem 0;
  }

  .section-heading h1,
  .section-heading h2 {
    letter-spacing: -0.03em;
  }

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

  .contact-banner img {
    width: min(15rem, 100%);
  }
}