:root {
  --bg: #f7fbff;
  --bg-deep: #edf5fb;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-strong: rgba(248, 252, 255, 0.96);
  --line: rgba(18, 44, 79, 0.12);
  --text: #10233f;
  --muted: #627892;
  --accent: #76d7ff;
  --accent-strong: #2aa9ff;
  --shadow: 0 18px 50px rgba(26, 73, 128, 0.12);
  --radius: 26px;
  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Microsoft YaHei", sans-serif;
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(circle at top left, rgba(42, 169, 255, 0.2), transparent 30%),
    radial-gradient(circle at 80% 0%, rgba(118, 215, 255, 0.12), transparent 22%),
    linear-gradient(180deg, #fbfdff 0%, #f3f8fd 45%, #edf5fb 100%);
}

main {
  display: grid;
  gap: 20px;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 82px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand span {
  line-height: 1;
}

.brand-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
  object-position: center;
  flex: 0 0 auto;
  filter: drop-shadow(0 10px 20px rgba(42, 169, 255, 0.2));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav a {
  color: var(--muted);
  transition: color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 6px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px 0;
  border-radius: 99px;
  background: var(--text);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 0;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  pointer-events: none;
}

.hero-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(247, 251, 255, 0.95) 10%, rgba(247, 251, 255, 0.72) 42%, rgba(247, 251, 255, 0.88) 100%),
    linear-gradient(180deg, rgba(239, 247, 253, 0.22), rgba(239, 247, 253, 0.72));
}

.hero-backdrop img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-grid,
.intro-grid,
.showcase-grid,
.docs-layout,
.value-layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.hero-grid {
  grid-template-columns: 1fr;
  align-items: start;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-banner {
  position: relative;
  width: 100vw;
  max-width: 100vw;
  margin: 0 0 0 calc(50% - 50vw);
}

.hero-banner-viewport {
  position: relative;
  overflow: hidden;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.hero-banner-track {
  display: flex;
  transition: transform 0.6s ease;
}

.hero-banner-slide {
  position: relative;
  flex: 0 0 100%;
  min-width: 100%;
  height: calc(80svh - 66px);
  min-height: 448px;
  overflow: hidden;
  border-radius: 0;
  background: transparent;
}

.hero-banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-banner-dots {
  position: absolute;
  left: 50%;
  bottom: 24px;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  background: rgba(12, 24, 41, 0.28);
  backdrop-filter: blur(12px);
  transform: translateX(-50%);
}

.hero-banner-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.hero-banner-dot.is-active {
  background: #ffffff;
  transform: scale(1.25);
}

.hero-banner-arrow {
  position: absolute;
  top: 50%;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  background: rgba(12, 24, 41, 0.3);
  color: #ffffff;
  cursor: pointer;
  backdrop-filter: blur(12px);
  transform: translateY(-50%);
  transition: background 0.2s ease, transform 0.2s ease;
}

.hero-banner-arrow:hover,
.hero-banner-arrow:focus-visible {
  background: rgba(12, 24, 41, 0.46);
  transform: translateY(-50%) scale(1.04);
}

.hero-banner-arrow span {
  font-size: 1.8rem;
  line-height: 1;
}

.hero-banner-arrow-prev {
  left: 26px;
}

.hero-banner-arrow-next {
  right: 26px;
}

.hero-copy h1,
.section-head h2,
.showcase-content h2 {
  margin: 0;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.hero-copy h1 {
  max-width: none;
  font-size: clamp(3rem, 6vw, 5.3rem);
}

.hero-text,
.section-head p,
.service-copy p,
.timeline-item p,
.value-grid p,
.doc-card figcaption,
.site-footer p,
.showcase-content p,
.mini-news p {
  color: var(--muted);
}

.hero-text {
  max-width: 62ch;
  margin: 22px auto 0;
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
}

.btn-secondary {
  border-color: rgba(18, 44, 79, 0.12);
  background: rgba(255, 255, 255, 0.7);
}

.hero-metrics,
.service-grid,
.timeline,
.value-grid,
.mini-news,
.gallery-grid {
  display: grid;
  gap: 22px;
}

.hero-metrics {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 40px;
}

.hero-metrics article,
.visual-card,
.service-card,
.timeline-item,
.mission-banner,
.value-grid article,
.doc-card,
.mini-news article,
.section-alt .showcase-banner {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-metrics article {
  padding: 20px 18px;
  border-radius: 20px;
  backdrop-filter: blur(8px);
  text-align: center;
}

.hero-metrics strong {
  display: block;
  font-size: 1.32rem;
}

.hero-metrics span {
  color: var(--muted);
  font-size: 0.93rem;
}

.hero-visual {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: 18px;
  align-items: stretch;
}

.visual-card {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
}

.visual-card img,
.service-card img,
.gallery-card img,
.showcase-banner img,
.mini-news img,
.doc-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.visual-card-large {
  min-height: 580px;
}

.visual-card-large::after,
.showcase-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(245, 250, 255, 0.02), rgba(12, 35, 63, 0.3));
}

.visual-caption,
.showcase-content {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  z-index: 1;
}

.visual-caption span,
.visual-tag {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
}

.visual-caption h2 {
  margin: 14px 0 0;
  font-size: clamp(1.8rem, 2.8vw, 2.65rem);
  line-height: 1.12;
}

.visual-stack {
  display: grid;
  gap: 18px;
}

.visual-stack .visual-card {
  min-height: 281px;
}

.visual-tag {
  position: absolute;
  left: 16px;
  bottom: 16px;
  z-index: 1;
}

.section {
  padding: 20px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.02);
}

.section-head {
  max-width: 860px;
  margin-inline: auto;
  text-align: center;
}

.section-head-wide {
  max-width: 900px;
}

.compact-head {
  max-width: 500px;
}

.section-head h2,
.showcase-content h2 {
  font-size: clamp(2.15rem, 4vw, 3.35rem);
}

.section-head p {
  margin: 18px 0 0;
  font-size: 1.02rem;
}

.intro-grid {
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  align-items: stretch;
  gap: 20px;
}

.intro-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
  justify-content: center;
}

.intro-points span {
  display: inline-flex;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: #234365;
  font-size: 0.95rem;
}

.image-collage {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.image-collage figure,
.gallery-card {
  margin: 0;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.image-collage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-collage-main {
  grid-row: span 2;
  min-height: 520px;
}

.image-collage-wide {
  grid-column: 1 / -1;
  min-height: 250px;
}

.image-collage figure:not(.image-collage-main):not(.image-collage-wide) {
  min-height: 250px;
}

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

.service-card {
  overflow: hidden;
  border-radius: var(--radius);
}

.service-card img {
  height: 230px;
}

.service-copy {
  padding: 24px 24px 28px;
  text-align: center;
}

.service-index {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.service-copy h3,
.timeline-item h3,
.mission-banner h3,
.value-grid h3,
.mini-news h3,
.site-footer h3 {
  margin: 0 0 12px;
  font-size: 1.22rem;
}

.gallery-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-rows: 250px;
  margin-top: 34px;
}

.gallery-card {
  position: relative;
}

.gallery-card-wide {
  grid-column: span 2;
}

.gallery-card-tall {
  grid-row: span 2;
}

.showcase-grid {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: start;
}

.showcase-banner {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  border-radius: 30px;
}

.showcase-content p:last-child {
  margin-bottom: 0;
}

.mini-news article {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  padding: 16px;
  border-radius: 24px;
}

.mini-news img {
  aspect-ratio: 1 / 1;
  border-radius: 18px;
}

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

.timeline-item,
.mission-banner,
.value-grid article {
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}

.timeline-item span {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.mission-banner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 24px;
  background:
    linear-gradient(135deg, rgba(42, 169, 255, 0.16), rgba(118, 215, 255, 0.07)),
    var(--panel-strong);
}

.value-layout {
  grid-template-columns: 1fr;
  align-items: start;
  gap: 28px;
}

.value-layout .section-head {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: 14px;
  max-width: none;
}

.value-layout .section-head .eyebrow,
.value-layout .section-head h2,
.value-layout .section-head p {
  margin: 0;
}

.docs-layout {
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  align-items: start;
  gap: 16px;
}

.value-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 0;
}

.docs-copy {
  display: grid;
  gap: 12px;
  max-width: 560px;
  justify-items: center;
  text-align: center;
}

.docs-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  padding-top: 0;
}

.docs-panel h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.docs-inline-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  justify-content: center;
}

.docs-inline-list span {
  display: inline-flex;
  align-items: center;
  color: #e6f0fb;
  font-size: 0.95rem;
  font-weight: 600;
}

.docs-note {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.docs-subnote {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.docs-slider {
  position: relative;
  width: min(100%, 480px);
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(246, 251, 255, 0.92)),
    var(--panel);
  box-shadow: var(--shadow);
}

.docs-arrow {
  position: absolute;
  top: 50%;
  z-index: 3;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(18, 44, 79, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--text);
  cursor: pointer;
  transform: translateY(-50%);
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
  backdrop-filter: blur(8px);
}

.docs-arrow:hover,
.docs-arrow:focus-visible {
  background: rgba(245, 250, 255, 0.98);
  border-color: rgba(18, 44, 79, 0.2);
}

.docs-arrow-prev {
  left: 12px;
}

.docs-arrow-next {
  right: 12px;
}

.docs-media {
  display: flex;
  justify-content: center;
  padding-bottom: 56px;
  transform: translateY(10%);
}

.docs-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.45s ease;
  will-change: transform;
}

.docs-slide {
  flex: 0 0 100%;
  margin: 0;
  display: grid;
  grid-template-rows: 1fr auto;
}

.docs-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #ffffff;
  padding: 12px 52px;
}

.docs-slide figcaption {
  padding: 12px 14px 14px;
  color: var(--muted);
  font-size: 0.88rem;
  text-align: center;
  background: rgba(247, 251, 255, 0.96);
}

.site-footer {
  padding: 36px 0 16px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.8fr 1fr;
  gap: 24px;
}

.footer-brand {
  margin-bottom: 16px;
  justify-content: center;
}

.footer-grid > div {
  text-align: center;
}

.footer-bottom {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

@media (max-width: 1180px) {
  .hero-grid,
  .intro-grid,
  .showcase-grid,
  .docs-layout,
  .value-layout {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .timeline,
  .gallery-grid,
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gallery-card-wide,
  .gallery-card-tall {
    grid-column: auto;
    grid-row: auto;
  }

  .hero-copy h1 {
    max-width: none;
  }

  .value-layout .section-head {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

@media (max-width: 820px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .nav-wrap {
    min-height: 72px;
  }

  .brand {
    gap: 10px;
    font-size: 0.96rem;
  }

  .brand-logo {
    width: 46px;
    height: 46px;
  }

  .hero-banner {
    margin: 0 0 0 calc(50% - 50vw);
  }

  .hero-banner-slide {
    height: calc(80svh - 58px);
    min-height: 384px;
  }

  .hero-banner-arrow {
    width: 40px;
    height: 40px;
  }

  .hero-banner-arrow-prev {
    left: 18px;
  }

  .hero-banner-arrow-next {
    right: 18px;
  }

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

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
  }

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

  .hero {
    padding: 0;
  }

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

  .visual-card-large {
    min-height: 430px;
  }

  .visual-stack {
    grid-template-columns: 1fr 1fr;
  }

  .image-collage,
  .service-grid,
  .gallery-grid,
  .timeline,
  .value-grid,
  .footer-grid,
  .hero-metrics,
  .mission-banner {
    grid-template-columns: 1fr;
  }

  .docs-toolbar {
    width: 100%;
  }

  .docs-panel {
    width: 100%;
    padding-top: 0;
  }

  .docs-media {
    justify-content: flex-start;
    padding-bottom: 48px;
  }

  .docs-slider {
    width: 100%;
    max-width: 480px;
  }

  .gallery-grid {
    grid-auto-rows: 220px;
  }

  .image-collage-main,
  .image-collage figure:not(.image-collage-main),
  .showcase-banner {
    min-height: auto;
  }

  .mini-news article {
    grid-template-columns: 100px minmax(0, 1fr);
  }
}

@media (max-width: 560px) {
  .hero-banner-viewport {
    padding: 0;
    border-radius: 0;
  }

  .hero-banner-slide {
    height: calc(80svh - 58px);
    min-height: 288px;
    border-radius: 0;
  }

  .hero-banner-dots {
    bottom: 10px;
    gap: 6px;
    padding: 5px 8px;
  }

  .hero-banner-arrow {
    width: 36px;
    height: 36px;
  }

  .hero-banner-arrow span {
    font-size: 1.55rem;
  }

  .hero-banner-arrow-prev {
    left: 14px;
  }

  .hero-banner-arrow-next {
    right: 14px;
  }

  .hero-copy h1 {
    font-size: 2.7rem;
  }

  .section {
    padding: 20px 0;
  }

  .visual-stack {
    grid-template-columns: 1fr;
  }

  .visual-caption,
  .showcase-content {
    left: 18px;
    right: 18px;
    bottom: 18px;
  }

  .service-copy,
  .timeline-item,
  .mission-banner,
  .value-grid article {
    padding: 22px;
  }

  .mini-news article {
    grid-template-columns: 1fr;
  }

  .mini-news img {
    width: 100%;
    aspect-ratio: 16 / 10;
  }
}