:root {
  --bg: #eef3f8;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: #ffffff;
  --ink: #101820;
  --muted: #526170;
  --line: rgba(15, 34, 53, 0.12);
  --brand: #0a59c7;
  --brand-deep: #053370;
  --accent: #7dc1ff;
  --shadow: 0 20px 60px rgba(7, 27, 60, 0.12);
  --wrap: min(1180px, calc(100vw - 40px));
  --heading-font: "PingFang SC", "PingFang TC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --radius-xl: 0;
  --radius-lg: 0;
  --radius-md: 0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding-top: 72px;
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(123, 190, 255, 0.28), transparent 30%),
    linear-gradient(180deg, #f7fbff 0%, #eef4fa 35%, #f7fafc 100%);
}

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

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

.wrap {
  width: var(--wrap);
  margin: 0 auto;
}

.sub-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.62);
  box-shadow: 0 14px 38px rgba(9, 31, 66, 0.08);
}

.sub-header::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0.08)),
    linear-gradient(90deg, rgba(125, 193, 255, 0.08), transparent 35%, rgba(10, 89, 199, 0.05));
  pointer-events: none;
}

.sub-header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 2px;
}

.sub-logo {
  display: inline-flex;
  align-items: center;
  width: 198px;
  flex-shrink: 0;
}

.menu-toggle {
  display: none;
  position: relative;
  z-index: 36;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid rgba(10, 89, 199, 0.14);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 8px 22px rgba(9, 31, 66, 0.08);
  cursor: pointer;
}

.menu-toggle span {
  position: absolute;
  left: 50%;
  width: 18px;
  height: 2px;
  border-radius: 0;
  background: #163456;
  transform: translateX(-50%);
  transition:
    transform 0.24s ease,
    opacity 0.24s ease,
    top 0.24s ease;
}

.menu-toggle span:nth-child(1) {
  top: 16px;
}

.menu-toggle span:nth-child(2) {
  top: 22px;
}

.menu-toggle span:nth-child(3) {
  top: 28px;
}

.sub-nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  font-size: 0.98rem;
  color: #203246;
  font-weight: 600;
}

.sub-nav a {
  position: relative;
  padding: 10px 0;
  white-space: nowrap;
}

.sub-nav-cta {
  display: none;
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 34;
  background: rgb(215 226 240 / 3%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
}

.sub-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.24s ease;
}

.sub-nav a:hover::after,
.sub-nav a:focus-visible::after {
  transform: scaleX(1);
}

.sub-nav a,
.sub-back,
.button,
.hero-scroll,
.intro-card,
.intro-highlight,
.product-module,
.product-showcase,
.advantage-card,
.honor-year,
.contact-card,
.contact-line,
.honor-year-tag,
.advantage-icon,
.module-head span,
.product-visual img {
  transition:
    transform 0.28s ease,
    box-shadow 0.28s ease,
    border-color 0.28s ease,
    background-color 0.28s ease,
    color 0.28s ease,
    opacity 0.28s ease;
}

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

.sub-back,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  font-weight: 700;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease;
}

.sub-back {
  min-height: 42px;
  padding: 0 18px;
  margin-left: auto;
  color: #173352;
  font-size: 0.94rem;
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid rgba(10, 89, 199, 0.12);
  box-shadow: 0 8px 22px rgba(9, 31, 66, 0.06);
}

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

body.menu-open {
  overflow: hidden;
}

body.menu-open .nav-backdrop {
  opacity: 1;
  pointer-events: auto;
}

body.menu-open .menu-toggle span:nth-child(1) {
  top: 22px;
  transform: translateX(-50%) rotate(45deg);
}

body.menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

body.menu-open .menu-toggle span:nth-child(3) {
  top: 22px;
  transform: translateX(-50%) rotate(-45deg);
}

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

.hero-stage {
  position: relative;
  min-height: min(calc(100vh - 72px), 1080px);
  width: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: clamp(32px, 5vw, 72px) 0;
  background:
    linear-gradient(90deg, rgba(6, 17, 33, 0.28) 0%, rgba(6, 17, 33, 0.52) 30%, rgba(6, 17, 33, 0.1) 65%, rgba(6, 17, 33, 0.12) 100%),
    linear-gradient(180deg, rgba(7, 29, 58, 0.02), rgba(7, 29, 58, 0.54)),
    url("32470a9c3350a125631df5a2724904bc.png") center center / cover no-repeat;
  box-shadow: 0 24px 64px rgba(7, 27, 60, 0.18);
}

.hero-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 24%, rgba(125, 193, 255, 0.22), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 30%);
  animation: heroGlow 7s ease-in-out infinite alternate;
}

.hero-copy-overlay {
  position: relative;
  z-index: 1;
  width: 90%;
  max-width: 1160px;
  animation: heroRise 0.9s ease both;
}

.kicker {
  margin: 0 0 14px;
  font-size: 0.88rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--brand);
}

h1,
h2 {
  margin: 0;
  font-family: var(--heading-font);
  font-weight: 700;
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(6.8rem, 8vw, 5rem);
  line-height: 1.1;
  max-width: 10ch;
  color: #ffffff;
  text-shadow: 0 10px 30px rgba(4, 15, 34, 0.28);
}

.lead,
.section-heading p,
.intro-card p,
.advantage-card p,
.honor-card p,
.history-card li,
.contact-line span,
.intro-highlight li,
.product-list li {
  color: var(--muted);
  line-height: 1.75;
  font-size: 1.04rem;
}

.hero-kicker {
  color: rgba(231, 243, 255, 0.9);
}

.hero-lead {
  max-width: 54ch;
  color: rgba(241, 247, 255, 0.92);
  text-shadow: 0 8px 22px rgba(4, 15, 34, 0.18);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  min-height: 52px;
  padding: 0 24px;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), #0e78f0);
  box-shadow: 0 16px 36px rgba(10, 89, 199, 0.24);
}

.button-secondary {
  border: 1px solid rgba(10, 89, 199, 0.2);
  background: rgba(255, 255, 255, 0.85);
}

.card,
.product-module,
.contact-card {
  border: 1px solid rgba(255, 255, 255, 0.65);
  background: var(--surface);
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow);
}

.section {
  padding: 96px 0;
}

.section-dark {
  position: relative;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7, 30, 61, 0.98), rgba(6, 21, 42, 0.94)),
    radial-gradient(circle at top right, rgba(78, 164, 255, 0.16), transparent 28%);
}

.section-dark .section-heading p,
.section-dark .product-list li,
.section-dark .product-eyebrow,
.section-dark .product-description {
  color: rgba(233, 240, 250, 0.78);
}

.section-soft {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.94)),
    radial-gradient(circle at center right, rgba(90, 174, 255, 0.08), transparent 26%);
}

#honors.section {
  padding: 68px 0 72px;
}

#honors .section-heading {
  margin-bottom: 24px;
}

#timeline.section {
  padding: 54px 0 60px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 18px;
  z-index: 1;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.92rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  animation: pulseHint 2.2s ease-in-out infinite;
}

.hero-scroll:hover {
  transform: translateX(-50%) translateY(-4px);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.92fr);
  align-items: stretch;
  gap: 22px;
}

.card {
  padding: 28px;
  border-radius: var(--radius-lg);
}

.intro-logo {
  width: min(260px, 100%);
  height: auto;
  margin-bottom: 22px;
  object-fit: contain;
}

.intro-card-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-self: stretch;
}

.intro-metric-card {
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 22px 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgb(246 250 255));
  border-color: rgba(10, 89, 199, 0.1);
}

.intro-metric-card span {
  display: block;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.intro-metric-card strong {
  display: block;
  margin-top: 8px;
  color: var(--brand-deep);
  font-size: clamp(2.4rem, 4vw, 3.3rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition:
    opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.75s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.intro-grid .reveal:nth-child(1),
.product-showcase-list .reveal:nth-child(1),
.advantage-grid .reveal:nth-child(1),
.honor-timeline .reveal:nth-child(1),
.history-board .reveal:nth-child(1) {
  transition-delay: 0.06s;
}

.product-showcase-list .reveal:nth-child(2),
.advantage-grid .reveal:nth-child(2),
.honor-timeline .reveal:nth-child(2),
.history-board .reveal:nth-child(2) {
  transition-delay: 0.12s;
}

.product-showcase-list .reveal:nth-child(3),
.advantage-grid .reveal:nth-child(3),
.honor-timeline .reveal:nth-child(3),
.history-board .reveal:nth-child(3) {
  transition-delay: 0.18s;
}

.advantage-grid .reveal:nth-child(4),
.honor-timeline .reveal:nth-child(4),
.history-board .reveal:nth-child(4) {
  transition-delay: 0.24s;
}

.honor-timeline .reveal:nth-child(5),
.history-board .reveal:nth-child(5) {
  transition-delay: 0.3s;
}

.history-board .reveal:nth-child(6) {
  transition-delay: 0.36s;
}

.history-board .reveal:nth-child(7) {
  transition-delay: 0.42s;
}

.intro-highlight h3,
.product-module h3,
.advantage-card h3,
.honor-card h3,
.history-card h3 {
  margin: 0 0 12px;
  font-size: 1.4rem;
  line-height: 1.35;
}

.intro-highlight ul,
.product-list {
  margin: 0;
  padding-left: 18px;
}

.intro-highlight li,
.product-list li {
  margin-bottom: 12px;
}

.product-showcase-list {
  display: grid;
  gap: 22px;
}

.product-showcase {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  align-items: center;
  gap: clamp(24px, 4vw, 48px);
  padding: clamp(26px, 3.4vw, 36px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0;
  overflow: hidden;
  background:
    linear-gradient(125deg, rgba(255, 255, 255, 0.08), rgba(8, 25, 48, 0.68)),
    radial-gradient(circle at top left, rgba(125, 193, 255, 0.2), transparent 42%),
    radial-gradient(circle at bottom right, rgba(46, 112, 208, 0.26), transparent 36%),
    #0d1f34;
  box-shadow: 0 26px 54px rgba(5, 19, 40, 0.2);
}

.product-showcase::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.06), transparent 28%),
    radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.08), transparent 22%);
  pointer-events: none;
}

.product-copy,
.product-visual {
  position: relative;
  z-index: 1;
}

.product-copy {
  max-width: 640px;
}

.product-copy .module-head {
  align-items: flex-start;
  margin-bottom: 18px;
}

.product-copy .module-head > div {
  display: grid;
  gap: 6px;
}

.product-eyebrow {
  margin: 0;
  font-size: 0.84rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.product-showcase h3 {
  margin: 0;
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  line-height: 1.2;
}

.product-summary {
  margin: 0;
  color: #ffffff;
  font-size: 1.1rem;
  line-height: 1.8;
  font-weight: 600;
}

.product-description {
  margin: 14px 0 0;
  font-size: 1rem;
  line-height: 1.9;
}

.product-button {
  margin-top: 22px;
  width: max-content;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
}

.product-button:hover,
.product-button:focus-visible {
  background: rgba(255, 255, 255, 0.14);
  box-shadow: 0 18px 36px rgba(7, 27, 60, 0.18);
}

.product-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  padding: 18px;
  border-radius: 0;
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.02) 48%, transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.01));
}

.product-visual::before {
  content: "";
  position: absolute;
  inset: 14% 10%;
  border-radius: 0;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.34), rgba(125, 193, 255, 0.08) 46%, transparent 68%);
  filter: blur(18px);
  opacity: 0.88;
}

.product-visual img {
  position: relative;
  z-index: 1;
  width: min(100%, 430px);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 20px 40px rgba(1, 8, 20, 0.34));
}

.product-showcase:hover,
.product-showcase:focus-within {
  transform: translateY(-8px);
  border-color: rgba(146, 205, 255, 0.26);
  box-shadow: 0 32px 70px rgba(5, 19, 40, 0.24);
}

.product-showcase:hover .product-visual img,
.product-showcase:focus-within .product-visual img {
  transform: translateY(-10px) scale(1.045) rotate(-2deg);
  filter: drop-shadow(0 28px 50px rgba(1, 8, 20, 0.42));
}

.product-showcase-reverse:hover .product-visual img,
.product-showcase-reverse:focus-within .product-visual img {
  transform: translateY(-10px) scale(1.045) rotate(2deg);
}

.intro-card:hover,
.intro-highlight:hover,
.advantage-card:hover,
.honor-year:hover,
.contact-card:hover {
  transform: translateY(-6px);
  border-color: rgba(10, 89, 199, 0.2);
  box-shadow: 0 24px 52px rgba(7, 27, 60, 0.16);
}

.product-module:hover {
  transform: translateY(-8px);
  box-shadow: 0 28px 58px rgba(7, 27, 60, 0.22);
}

.product-module:hover .module-head span {
  transform: scale(1.08);
  background: rgba(255, 255, 255, 0.18);
}

.product-module:hover .product-list li {
  color: #ffffff;
}

.module-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.module-head span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 0;
  background: rgba(10, 89, 199, 0.12);
  color: var(--brand);
  font-weight: 800;
}

.section-dark .module-head span {
  background: rgba(255, 255, 255, 0.12);
  color: #d8ebff;
}

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

.advantage-card {
  min-height: 220px;
}

.advantage-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 0;
  margin-bottom: 18px;
  background: rgba(10, 89, 199, 0.12);
  color: var(--brand);
}

.advantage-icon svg {
  width: 22px;
  height: 22px;
}

.honor-timeline {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}

.honor-year {
  display: block;
  min-height: 100%;
  padding: 18px 18px 16px;
  align-items: start;
}

.honor-year-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 0;
  color: #fff;
  font-size: 1.02rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--brand), #0e78f0);
  box-shadow: 0 10px 24px rgba(10, 89, 199, 0.16);
  margin-bottom: 14px;
}

.honor-year:hover .honor-year-tag {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(10, 89, 199, 0.2);
}

.honor-list {
  margin: 0;
  padding-left: 16px;
}

.honor-list li {
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.52;
}

.honor-year:nth-child(1),
.honor-year:nth-child(2),
.honor-year:nth-child(3) {
  grid-column: span 4;
}

.honor-year:nth-child(4),
.honor-year:nth-child(5) {
  grid-column: span 6;
}

.history-board {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px 16px;
  padding: 8px 0 4px;
}

.history-card {
  position: relative;
  z-index: 1;
  min-height: 236px;
  border-radius: 0;
  border: 1px solid rgba(23, 56, 103, 0.22);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 18px 34px rgba(7, 27, 60, 0.09);
}

.history-card::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 20px;
  height: 20px;
  background: inherit;
  border-left: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: translateX(-50%) rotate(-45deg);
}

.history-card-top::after {
  bottom: -11px;
}

.history-card-bottom::after {
  top: -11px;
  transform: translateX(-50%) rotate(135deg);
}

.history-card-accent {
  border-color: rgba(202, 156, 90, 0.42);
}

.history-card-accent::after {
  color: rgba(202, 156, 90, 0.42);
}

.history-card:not(.history-card-accent)::after {
  color: rgba(23, 56, 103, 0.22);
}

.history-card-inner {
  padding: 20px 22px;
}

.history-card h3 {
  margin-top: 0;
  margin-bottom: 8px;
  color: #2458a8;
  font-size: 1.55rem;
}

.history-card strong {
  color: #1d2d44;
}

.history-card ul {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.history-card li {
  margin-bottom: 6px;
  font-size: 0.9rem;
  line-height: 1.45;
}

.history-card-top:nth-of-type(1) {
  grid-column: 3 / span 3;
}

.history-card-top:nth-of-type(2) {
  grid-column: 7 / span 3;
}

.history-card-top:nth-of-type(3) {
  grid-column: 10 / span 3;
}

.history-rail {
  grid-column: 1 / -1;
  position: relative;
  z-index: 0;
  min-height: 118px;
  margin-top: 0;
  border-radius: 0;
  background:
    linear-gradient(180deg, rgba(11, 79, 178, 0.96), rgba(31, 95, 190, 0.95)),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08), transparent);
  overflow: hidden;
}

.history-rail::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 50%, rgba(255, 255, 255, 0.08), transparent 12%),
    radial-gradient(circle at 42% 40%, rgba(255, 255, 255, 0.08), transparent 10%),
    radial-gradient(circle at 78% 58%, rgba(255, 255, 255, 0.08), transparent 12%);
  opacity: 0.9;
}

.history-rail-line {
  position: absolute;
  top: 50%;
  left: 3%;
  right: 3%;
  height: 3px;
  background: rgba(255, 255, 255, 0.82);
  transform: translateY(-50%);
}

.history-rail-line::before,
.history-rail-line::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 14px;
  height: 14px;
  border-top: 3px solid rgba(255, 255, 255, 0.82);
  border-right: 3px solid rgba(255, 255, 255, 0.82);
  transform: translateY(-50%) rotate(45deg);
}

.history-rail-line::before {
  left: -1px;
}

.history-rail-line::after {
  right: -1px;
}

.history-node {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
}

.history-node::before {
  content: "";
  display: block;
  width: 14px;
  height: 14px;
  margin: 0 auto 12px;
  border-radius: 0;
  border: 2px solid rgba(255, 255, 255, 0.78);
  background: #2f67c2;
  box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.06);
}

.history-node span {
  display: block;
  color: #ffffff;
  font-size: 0.86rem;
  font-weight: 800;
  white-space: nowrap;
}

.history-node-start {
  left: 8%;
}

.history-node:nth-of-type(3) {
  left: 25%;
}

.history-node:nth-of-type(4) {
  left: 40%;
}

.history-node:nth-of-type(5) {
  left: 61%;
}

.history-node:nth-of-type(6) {
  left: 77%;
}

.history-node-highlight {
  left: 90%;
}

.history-node-highlight::before {
  background: #d6a45b;
  border-color: rgba(255, 224, 186, 0.85);
}

.history-card-bottom:nth-of-type(4) {
  grid-column: 1 / span 3;
}

.history-card-bottom:nth-of-type(5) {
  grid-column: 4 / span 4;
}

.history-card-bottom:nth-of-type(6) {
  grid-column: 9 / span 4;
}

.history-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 40px rgba(7, 27, 60, 0.12);
}

.contact-section {
  position: relative;
  color: #fff;
  background:
    linear-gradient(120deg, rgba(8, 18, 33, 0.98), rgba(9, 45, 87, 0.95)),
    radial-gradient(circle at top right, rgba(112, 191, 255, 0.18), transparent 28%);
}

.contact-section .section-heading p,
.contact-section .contact-line span {
  color: rgba(235, 243, 251, 0.82);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 24px;
  align-items: start;
}

.contact-qr {
  width: min(168px, 48vw);
  padding: 12px;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 18px 34px rgba(4, 16, 33, 0.18);
}

.contact-qr img {
  width: 100%;
  height: auto;
  border-radius: 0;
}

.contact-card {
  padding: 18px;
  border: 0;
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
}

.contact-card-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
}

.contact-lines {
  min-width: 0;
}

.contact-line {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-line:last-child {
  border-bottom: 0;
}

.contact-line strong,
.contact-line a {
  color: #fff;
  text-align: right;
  font-weight: 700;
}

.contact-line:hover {
  background: rgba(255, 255, 255, 0.06);
}

@media (max-width: 1080px) {
  .sub-header-inner {
    flex-wrap: wrap;
    padding: 16px 0;
  }

  .sub-nav {
    position: static;
    left: auto;
    transform: none;
    order: 2;
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 16px 22px;
  }

  .sub-back {
    order: 3;
    margin-left: 0;
  }

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

  .contact-card-body {
    grid-template-columns: 1fr;
  }

  .contact-qr {
    margin: 8px auto 0;
  }

  .product-showcase {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .product-showcase-reverse .product-visual {
    order: 2;
  }

  .product-showcase-reverse .product-copy {
    order: 1;
  }

  .contact-qr {
    width: min(180px, 42vw);
  }

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

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

  .honor-year:nth-child(1),
  .honor-year:nth-child(2),
  .honor-year:nth-child(3),
  .honor-year:nth-child(4),
  .honor-year:nth-child(5) {
    grid-column: auto;
  }

  .hero-stage {
    min-height: 760px;
    align-items: flex-end;
  }

  .history-board {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 20px;
  }

  .history-card-top:nth-of-type(1),
  .history-card-top:nth-of-type(2),
  .history-card-top:nth-of-type(3),
  .history-card-bottom:nth-of-type(4),
  .history-card-bottom:nth-of-type(5),
  .history-card-bottom:nth-of-type(6),
  .history-rail {
    grid-column: auto;
  }

  .history-rail {
    min-height: 128px;
  }
}

@media (max-width: 760px) {
  body {
    padding-top: 72px;
  }

  .sub-header-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    min-height: 72px;
    padding: 10px 0;
  }

  .sub-logo {
    width: 160px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .sub-nav {
    position: fixed;
    top: 72px;
    right: 0;
    left: auto;
    z-index: 60;
    width: min(320px, calc(100vw - 28px));
    height: calc(100dvh - 72px);
    padding: 16px 20px 28px;
    transform: translateX(calc(100% + 20px));
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 10px;
    overflow-y: auto;
    border-left: 1px solid rgba(255, 255, 255, 0.7);
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(247, 251, 255, 0.92)),
      radial-gradient(circle at top right, rgba(125, 193, 255, 0.22), transparent 28%);
    box-shadow: -16px 0 36px rgba(7, 27, 60, 0.14);
    opacity: 0;
    pointer-events: none;
    transition:
      transform 0.3s ease,
      opacity 0.3s ease;
  }

  .nav-backdrop {
    z-index: 59;
  }

  .sub-nav a {
    display: flex;
    align-items: center;
    min-height: 52px;
    padding: 0 16px;
    border-radius: 0;
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(10, 89, 199, 0.1);
    box-shadow: 0 8px 18px rgba(9, 31, 66, 0.06);
  }

  .sub-nav a::after {
    display: none;
  }

  .sub-nav-cta {
    display: inline-flex;
    justify-content: center;
    margin-top: 10px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--brand), #0e78f0) !important;
    box-shadow: 0 16px 30px rgba(10, 89, 199, 0.18) !important;
  }

  body.menu-open .sub-nav {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }

  .sub-back {
    display: none;
  }

  .section {
    padding: 72px 0;
  }

  .product-showcase {
    padding: 22px;
    gap: 20px;
  }

  .product-showcase h3 {
    font-size: 1.75rem;
  }

  .product-summary,
  .product-description {
    line-height: 1.8;
  }

  .product-visual {
    min-height: 240px;
    padding: 14px;
  }

  .product-visual img {
    width: min(100%, 320px);
  }

  .product-button {
    width: 100%;
    justify-content: center;
  }

  .contact-qr {
    width: min(160px, 52vw);
  }

  .hero-block {
    padding: 0;
  }

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

  .intro-card-pair {
    grid-template-columns: 1fr;
  }

  .honor-timeline {
    grid-template-columns: 1fr;
  }

  .honor-year {
    padding: 16px;
  }

  .hero-stage {
    min-height: max(600px, calc(100svh - 72px));
    align-items: flex-end;
    padding: 104px 0 68px;
    background-position: 64% center;
    box-shadow: none;
  }

  .hero-copy-overlay {
    width: 90%;
  }

  .hero-kicker {
    margin-bottom: 10px;
    font-size: 0.74rem;
    letter-spacing: 0.18em;
  }

  h1 {
    font-size: clamp(2.5rem, 10.2vw, 3.8rem);
    line-height: 1.04;
    max-width: none;
    white-space: nowrap;
  }

  .hero-lead {
    max-width: none;
    margin-top: 16px;
    font-size: 0.98rem;
    line-height: 1.78;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-top: 24px;
  }

  .hero-actions .button {
    width: 100%;
    min-height: 50px;
  }

  .hero-scroll {
    display: none;
  }

  .contact-line {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .history-board {
    border-radius: 0;
    padding: 18px;
  }

  .history-card {
    min-height: auto;
  }

  .history-card-inner {
    padding: 18px 18px;
  }

  .history-card::after {
    display: none;
  }

  .history-rail {
    display: grid;
    align-content: center;
    gap: 10px;
    padding: 18px 16px;
  }

  .history-rail-line {
    left: 16px;
    right: 16px;
  }

  .history-node {
    position: relative;
    top: auto;
    left: auto !important;
    transform: none;
    display: inline-flex;
    align-items: center;
    gap: 12px;
  }

  .history-node::before {
    margin: 0;
    width: 14px;
    height: 14px;
  }

  .contact-line strong,
  .contact-line a {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.is-visible,
  .hero-stage::before,
  .hero-copy-overlay,
  .hero-scroll {
    animation: none !important;
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
}

@keyframes heroRise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroGlow {
  from {
    opacity: 0.55;
    transform: scale(1);
  }

  to {
    opacity: 0.9;
    transform: scale(1.04);
  }
}

@keyframes pulseHint {
  0%,
  100% {
    opacity: 0.7;
    transform: translateX(-50%) translateY(0);
  }

  50% {
    opacity: 1;
    transform: translateX(-50%) translateY(-4px);
  }
}