:root {
  --color-primary: #102a43;
  --color-primary-soft: #163555;
  --color-accent: #2563eb;
  --color-highlight: #c59d5f;
  --color-bg: #f7f9fc;
  --color-surface: #ffffff;
  --color-surface-soft: rgba(255, 255, 255, 0.08);
  --color-border: rgba(15, 23, 42, 0.08);
  --color-text: #1f2937;
  --color-text-secondary: #64748b;
  --color-text-light: rgba(255, 255, 255, 0.78);
  --shadow-lg: 0 30px 80px rgba(16, 42, 67, 0.18);
  --shadow-md: 0 20px 50px rgba(16, 42, 67, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --max-width: 1280px;
  --header-height: 82px;
  --transition: 420ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

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

.container {
  width: min(calc(100% - 48px), var(--max-width));
  margin: 0 auto;
}

.section-light {
  padding: 112px 0;
}

.section-dark {
  padding: 112px 0;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.18), transparent 32%),
    linear-gradient(135deg, #0c2238 0%, #112e4a 55%, #173b61 100%);
  color: #fff;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 44px;
}

.section-heading h2 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.section-heading p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 1rem;
}

.section-heading-dark p:not(.section-kicker) {
  color: var(--color-text-light);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-kicker::before {
  content: "";
  width: 42px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

.section-heading-dark .section-kicker,
.cta-section .section-kicker,
.hero-copy .section-kicker,
.business-hero-copy .section-kicker {
  color: rgba(255, 255, 255, 0.76);
}

.section-heading-dark .section-kicker::before,
.cta-section .section-kicker::before,
.hero-copy .section-kicker::before,
.business-hero-copy .section-kicker::before {
  background: rgba(255, 255, 255, 0.52);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 26px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 700;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background-color var(--transition),
    border-color var(--transition),
    color var(--transition);
}

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

.button-primary {
  background: linear-gradient(135deg, #d1aa68, var(--color-highlight));
  color: #132b45;
  box-shadow: 0 14px 30px rgba(197, 157, 95, 0.32);
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.36);
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}

.button-dark-text {
  border-color: rgba(16, 42, 67, 0.12);
  color: var(--color-primary);
  background: rgba(16, 42, 67, 0.03);
}

.button-nav {
  min-height: 42px;
  padding: 0 18px;
  background: var(--color-highlight);
  color: #102a43;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-height);
  backdrop-filter: blur(16px);
  transition: background-color var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  background: rgba(12, 28, 45, 0.92);
  box-shadow: 0 14px 40px rgba(8, 22, 37, 0.28);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: #fff;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.9), rgba(197, 157, 95, 0.9));
  font-weight: 800;
  letter-spacing: 0.06em;
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-copy strong {
  font-size: 1rem;
  font-weight: 800;
}

.brand-copy small {
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.96rem;
}

.site-nav a {
  transition: color var(--transition), opacity var(--transition);
}

.site-nav a:hover,
.site-nav a.is-active {
  color: #fff;
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  display: grid;
  gap: 2px;
  min-width: 180px;
  padding: 10px;
  border-radius: 16px;
  background: rgba(9, 25, 39, 0.96);
  box-shadow: 0 20px 48px rgba(7, 18, 30, 0.35);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  z-index: 20;
  transition: opacity var(--transition), transform var(--transition);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  padding: 10px 12px;
  border-radius: 10px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.92rem;
}

.nav-dropdown-menu a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.advantage-card-light {
  background: #fff;
  border-color: rgba(16, 42, 67, 0.08);
  box-shadow: 0 16px 40px rgba(12, 37, 61, 0.08);
}

.advantage-card-light p {
  color: var(--color-text-secondary);
}

.page-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

.page-path a {
  color: rgba(255, 255, 255, 0.78);
}

.page-path a:hover {
  color: #fff;
}

.page-path span {
  color: rgba(255, 255, 255, 0.48);
}

.page-path strong {
  color: #fff;
  font-weight: 700;
}

.quick-nav-section {
  padding-top: 28px;
  padding-bottom: 28px;
}

.quick-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 14px;
  border: 1px solid rgba(16, 42, 67, 0.08);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 18px 44px rgba(16, 42, 67, 0.08);
}

.quick-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid rgba(16, 42, 67, 0.08);
  color: var(--color-primary);
  font-weight: 700;
  transition: all var(--transition);
}

.quick-nav a:hover {
  background: var(--color-primary);
  border-color: transparent;
  color: #fff;
}

.page-intro {
  max-width: 780px;
  margin-bottom: 40px;
}

.page-intro p {
  margin: 0;
  color: var(--color-text-secondary);
}

.info-card {
  padding: 28px;
  border: 1px solid rgba(16, 42, 67, 0.08);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: 0 18px 42px rgba(16, 42, 67, 0.08);
}

.info-card h3 {
  margin: 0 0 18px;
  font-size: 1.24rem;
}

.info-card p {
  margin: 0;
  color: var(--color-text-secondary);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
}

.contact-side {
  display: grid;
  gap: 18px;
}

.contact-side dl {
  display: grid;
  gap: 16px;
  margin: 0;
}

.contact-side div {
  display: grid;
  gap: 4px;
}

.contact-side dt {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.contact-side dd {
  margin: 0;
  font-weight: 700;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field label {
  font-size: 0.94rem;
  font-weight: 700;
}

.form-field input,
.form-field textarea,
.form-field select {
  min-height: 50px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(16, 42, 67, 0.12);
  background: #fff;
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-field textarea {
  min-height: 160px;
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.form-hint {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.form-result {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid rgba(16, 42, 67, 0.08);
  background: rgba(16, 42, 67, 0.03);
  display: none;
}

.form-result.is-success,
.form-result.is-error {
  display: block;
}

.form-result.is-success {
  border-color: rgba(22, 163, 74, 0.2);
  background: rgba(22, 163, 74, 0.08);
  color: #15803d;
}

.form-result.is-error {
  border-color: rgba(220, 38, 38, 0.2);
  background: rgba(220, 38, 38, 0.08);
  color: #b91c1c;
}

.contact-alternative {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.contact-alternative a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid rgba(16, 42, 67, 0.12);
  background: rgba(16, 42, 67, 0.03);
  color: var(--color-primary);
  font-weight: 700;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.stat-card {
  padding: 26px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(16, 42, 67, 0.08);
  background: #fff;
  box-shadow: 0 18px 42px rgba(16, 42, 67, 0.08);
}

.stat-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1.1;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-card span {
  color: var(--color-text-secondary);
  font-size: 0.94rem;
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: #fff;
  transition: transform var(--transition), opacity var(--transition);
}

.hero-section,
.business-hero {
  position: relative;
  overflow: hidden;
  margin-top: calc(var(--header-height) * -1);
  padding-top: calc(var(--header-height) + 74px);
  background:
    radial-gradient(circle at 8% 16%, rgba(37, 99, 235, 0.22), transparent 26%),
    radial-gradient(circle at 86% 24%, rgba(197, 157, 95, 0.14), transparent 24%),
    linear-gradient(140deg, #081a2b 0%, #0f2741 50%, #153556 100%);
}

.hero-section {
  min-height: 100vh;
  min-height: 100svh;
}

.business-hero {
  min-height: 680px;
}

.hero-backdrop,
.business-hero-backdrop {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4, 14, 24, 0.84) 0%, rgba(6, 18, 30, 0.6) 44%, rgba(7, 19, 32, 0.32) 100%),
    radial-gradient(circle at 78% 24%, rgba(37, 99, 235, 0.22), transparent 22%),
    radial-gradient(circle at 72% 68%, rgba(197, 157, 95, 0.14), transparent 20%),
    linear-gradient(140deg, rgba(11, 26, 42, 0.82) 0%, rgba(16, 42, 67, 0.72) 50%, rgba(21, 53, 86, 0.8) 100%);
  opacity: 0.88;
}

.hero-backdrop {
  background:
    linear-gradient(90deg, rgba(4, 14, 24, 0.78) 0%, rgba(6, 18, 30, 0.5) 42%, rgba(7, 19, 32, 0.3) 100%),
    linear-gradient(140deg, rgba(11, 26, 42, 0.42) 0%, rgba(16, 42, 67, 0.3) 50%, rgba(21, 53, 86, 0.42) 100%),
    url("./images/hero-bg.png") center center / cover no-repeat;
  opacity: 1;
}

.hero-grid,
.business-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 54px;
  min-height: 680px;
}

.hero-grid {
  max-width: none;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100svh - var(--header-height));
}

.hero-copy,
.business-hero-copy {
  color: #fff;
}

.hero-copy {
  grid-column: 1;
  max-width: 680px;
}

.hero-copy h1,
.business-hero-copy h1 {
  margin: 0 0 24px;
  font-size: clamp(3rem, 5.4vw, 5rem);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.hero-lead,
.business-hero-copy p {
  max-width: 700px;
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.05rem;
}

.hero-actions,
.cta-actions,
.business-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 34px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-tags span,
.business-highlights span {
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.88rem;
}

.hero-visual,
.business-hero-visual {
  position: relative;
}

.hero-panel,
.business-panel,
.security-card,
.about-visual,
.industry-card,
.service-card,
.advantage-card,
.case-card,
.timeline-node,
.matrix-card,
.cooperation-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.hero-panel-main,
.business-panel-main {
  padding: 22px;
  background: rgba(11, 25, 40, 0.78);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(18px);
}

.panel-head,
.business-panel-head {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
  color: #fff;
}

.panel-badge {
  display: inline-flex;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.22);
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-panel-main img,
.business-panel-main img {
  border-radius: 20px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.panel-metrics,
.business-panel-list {
  display: grid;
  gap: 14px;
  padding: 20px 0 0;
  margin: 0;
  list-style: none;
  color: rgba(255, 255, 255, 0.88);
}

.panel-metrics li,
.business-panel-list li {
  display: grid;
  gap: 3px;
}

.panel-metrics strong,
.business-panel-list strong {
  font-size: 1rem;
}

.panel-metrics span,
.business-panel-list span {
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.92rem;
}

.hero-panel-float,
.business-panel-float {
  position: absolute;
  right: -18px;
  bottom: 34px;
  width: 270px;
  padding: 24px;
  background: linear-gradient(140deg, rgba(7, 20, 33, 0.92), rgba(24, 56, 89, 0.9));
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.panel-line,
.business-panel-line {
  display: block;
  width: 72px;
  height: 1px;
  margin-bottom: 18px;
  background: linear-gradient(90deg, rgba(197, 157, 95, 1), rgba(197, 157, 95, 0));
}

.hero-panel-float p,
.business-panel-float p {
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.88rem;
}

.hero-panel-float strong,
.business-panel-float strong {
  line-height: 1.45;
}

.flow-section {
  position: relative;
}

.flow-track,
.timeline-grid,
.cooperation-grid {
  display: grid;
  gap: 18px;
}

.flow-track {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.flow-item,
.timeline-node,
.cooperation-card {
  position: relative;
  padding: 28px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid rgba(16, 42, 67, 0.08);
  box-shadow: 0 16px 40px rgba(12, 37, 61, 0.08);
}

.flow-item::before,
.timeline-node::before,
.cooperation-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), rgba(197, 157, 95, 0.8));
  opacity: 0.8;
}

.flow-item span,
.timeline-node span,
.cooperation-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 700;
}

.flow-item strong,
.timeline-node strong,
.cooperation-card strong {
  display: block;
  margin: 18px 0 12px;
  font-size: 1.08rem;
}

.flow-item p,
.timeline-node p,
.cooperation-card p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.96rem;
}

.service-grid,
.advantage-grid,
.industry-grid,
.timeline-grid,
.matrix-grid,
.security-grid,
.cooperation-grid {
  display: grid;
  gap: 22px;
}

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

.advantage-stack {
  display: grid;
  gap: 28px;
}

.advantage-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.95fr);
  gap: 34px;
  align-items: center;
}

.advantage-row-reverse {
  grid-template-columns: minmax(320px, 0.95fr) minmax(0, 1fr);
}

.advantage-row-reverse .advantage-copy-block {
  order: 2;
}

.advantage-row-reverse .advantage-media {
  order: 1;
}

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

.security-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.timeline-grid,
.cooperation-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.service-card,
.advantage-card,
.industry-card,
.security-card,
.matrix-card,
.case-card {
  padding: 30px;
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.advantage-copy-block {
  display: grid;
  gap: 16px;
  padding: 12px 0;
}

.advantage-copy-block h3 {
  margin: 0;
  font-size: clamp(1.8rem, 2.5vw, 2.5rem);
  line-height: 1.18;
  color: var(--color-primary);
}

.advantage-copy-block p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 1rem;
}

.advantage-media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  border-radius: 28px;
  border: 1px dashed rgba(37, 99, 235, 0.22);
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(197, 157, 95, 0.08)),
    rgba(16, 42, 67, 0.02);
  color: var(--color-text-secondary);
  font-size: 0.96rem;
  font-weight: 700;
}

.service-figure {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  border-radius: 22px;
  border: 1px dashed rgba(37, 99, 235, 0.24);
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(197, 157, 95, 0.08)),
    rgba(16, 42, 67, 0.02);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  font-weight: 700;
}

.service-card-top {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 20px;
  margin-bottom: 0;
}

.service-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  border-radius: 16px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-accent);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.service-card h3,
.advantage-card strong,
.industry-card h3,
.security-card h3,
.matrix-card h3 {
  margin: 0;
  font-size: 1.22rem;
}

.service-card p,
.advantage-card p,
.industry-card p,
.security-card p,
.matrix-card p {
  margin: 0;
  color: var(--color-text-secondary);
}

.service-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.service-chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(16, 42, 67, 0.06);
  color: #6b7c93;
  font-size: 0.9rem;
  font-weight: 600;
}

.service-card ul,
.footer-grid ul {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}

.service-card li,
.footer-grid li {
  position: relative;
  padding-left: 18px;
}

.service-card li::before,
.footer-grid li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--color-highlight);
}

.service-card a,
.matrix-card a,
.industry-card a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  color: var(--color-accent);
  font-weight: 700;
}

.service-card a::after,
.matrix-card a::after,
.industry-card a::after {
  content: ">";
  font-size: 0.95em;
}

.advantage-section .advantage-card {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}

.advantage-card p {
  color: rgba(255, 255, 255, 0.74);
}

.industry-card {
  padding: 20px;
}

.industry-card img {
  border-radius: 18px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  margin-bottom: 20px;
}

.case-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.case-tab {
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid rgba(16, 42, 67, 0.1);
  background: rgba(16, 42, 67, 0.03);
  color: var(--color-text-secondary);
  transition: all var(--transition);
}

.case-tab.is-active,
.case-tab:hover {
  border-color: transparent;
  background: var(--color-primary);
  color: #fff;
}

.case-stack {
  display: grid;
  gap: 24px;
}

.case-card {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 30px;
  align-items: stretch;
}

.case-card img {
  height: 100%;
  min-height: 420px;
  border-radius: 22px;
  object-fit: cover;
}

.case-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-body span {
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 700;
}

.case-body h3 {
  margin: 12px 0 22px;
  font-size: clamp(1.8rem, 2.8vw, 2.7rem);
  line-height: 1.15;
}

.case-body dl {
  display: grid;
  gap: 18px;
  margin: 0;
}

.case-body div {
  display: grid;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(16, 42, 67, 0.08);
}

.case-body dt {
  color: var(--color-primary);
  font-weight: 700;
}

.case-body dd {
  margin: 0;
  color: var(--color-text-secondary);
}

.section-cta {
  margin-top: 28px;
}

.about-grid,
.business-layout,
.security-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px;
  align-items: center;
}

.about-copy h2,
.business-copy h2,
.security-copy h2 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.about-copy p,
.business-copy p,
.security-copy p {
  margin: 0;
  color: var(--color-text-secondary);
}

.about-visual,
.business-image-card {
  padding: 18px;
}

.about-visual img,
.business-image-card img {
  border-radius: 22px;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.visual-block,
.image-fallback {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 260px;
  padding: 28px;
  border-radius: 22px;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.22), transparent 28%),
    radial-gradient(circle at bottom right, rgba(197, 157, 95, 0.16), transparent 24%),
    linear-gradient(135deg, rgba(16, 42, 67, 0.96), rgba(26, 46, 74, 0.92));
}

.visual-block::before,
.image-fallback::before {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.visual-block span,
.image-fallback::after {
  position: relative;
  z-index: 1;
  display: inline-flex;
  width: fit-content;
  margin-bottom: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.visual-block strong {
  position: relative;
  z-index: 1;
  max-width: 340px;
  color: #fff;
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  line-height: 1.25;
}

.image-fallback::after {
  content: "企业数据科技视觉";
  position: absolute;
  inset: auto 24px 24px 24px;
  padding: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: none;
}

.visual-hero {
  min-height: 300px;
}

.visual-industry {
  aspect-ratio: 4 / 3;
  min-height: auto;
}

.visual-case {
  min-height: 420px;
}

.visual-about {
  min-height: 360px;
}

.cta-section {
  padding: 104px 0;
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.22), transparent 24%),
    linear-gradient(135deg, #0b2033 0%, #112b45 100%);
  color: #fff;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: end;
}

.cta-grid h2 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 3.2vw, 3.3rem);
  line-height: 1.18;
}

.cta-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.74);
}

.cta-actions {
  justify-content: flex-end;
  align-items: center;
}

.site-footer {
  padding: 72px 0 30px;
  background: #081c2e;
  color: rgba(255, 255, 255, 0.8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr 0.8fr;
  gap: 30px;
}

.footer-grid h3 {
  margin: 0 0 18px;
  color: #fff;
  font-size: 1rem;
}

.footer-grid p,
.footer-grid ul {
  margin: 0;
  color: rgba(255, 255, 255, 0.64);
}

.footer-grid a:hover {
  color: #fff;
}

.footer-bottom {
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom p {
  margin: 0;
  color: rgba(255, 255, 255, 0.54);
}

.business-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.business-section {
  padding: 104px 0;
}

.business-image-card,
.security-card,
.matrix-card {
  background: #fff;
}

.matrix-card span,
.security-card span {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 12px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.09);
  color: var(--color-accent);
  font-size: 0.82rem;
  font-weight: 700;
}

.matrix-card h3,
.security-card h3 {
  margin-bottom: 12px;
}

.security-card {
  min-height: 100%;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 720ms ease, transform 720ms ease;
}

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

@media (max-width: 1180px) {
  .hero-grid,
  .business-hero-grid,
  .about-grid,
  .business-layout,
  .security-layout,
  .cta-grid,
  .case-card {
    grid-template-columns: 1fr;
  }

  .hero-section,
  .business-hero {
    min-height: auto;
    padding-bottom: 90px;
  }

  .hero-grid {
    min-height: auto;
  }

  .hero-panel-float,
  .business-panel-float {
    position: static;
    width: 100%;
    margin-top: 20px;
  }

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

  .service-grid,
  .advantage-grid,
  .industry-grid,
  .matrix-grid,
  .security-grid,
  .timeline-grid,
  .cooperation-grid,
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .advantage-row,
  .advantage-row-reverse {
    grid-template-columns: 1fr;
  }

  .advantage-row-reverse .advantage-copy-block,
  .advantage-row-reverse .advantage-media {
    order: initial;
  }

  .cta-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 860px) {
  .container {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-height) 16px auto 16px;
    display: grid;
    gap: 12px;
    padding: 20px;
    border-radius: 22px;
    background: rgba(9, 25, 39, 0.96);
    box-shadow: 0 20px 48px rgba(7, 18, 30, 0.35);
    transform: translateY(-16px);
    opacity: 0;
    pointer-events: none;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav .button-nav {
    margin-top: 6px;
  }

  .nav-dropdown {
    padding-bottom: 0;
    margin-bottom: 0;
  }

  .nav-dropdown::after {
    display: none;
  }

  .nav-dropdown-menu {
    position: static;
    min-width: auto;
    padding: 8px 0 0 14px;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .nav-dropdown-menu a {
    padding: 8px 0;
    border-radius: 0;
  }

  .contact-layout,
  .stat-grid {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .menu-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero-copy h1,
  .business-hero-copy h1 {
    font-size: clamp(2.4rem, 10vw, 3.4rem);
  }

  .section-light,
  .section-dark,
  .business-section,
  .cta-section {
    padding: 84px 0;
  }

  .flow-track,
  .service-grid,
  .advantage-grid,
  .industry-grid,
  .matrix-grid,
  .security-grid,
  .timeline-grid,
  .cooperation-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .case-card img {
    min-height: 280px;
  }

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

  .button {
    width: 100%;
  }
}

@media (max-width: 560px) {
  :root {
    --header-height: 76px;
  }

  .header-inner {
    gap: 16px;
  }

  .brand-copy small {
    display: none;
  }

  .hero-panel-main,
  .business-panel-main,
  .service-card,
  .advantage-card,
  .industry-card,
  .case-card,
  .security-card,
  .matrix-card,
  .timeline-node,
  .cooperation-card {
    padding: 22px;
  }

  .flow-item {
    padding: 24px;
  }
}