:root {
  --bg: #196b8e;
  --bg-alt: #145773;
  --surface: #f1f9fc;
  --surface-soft: #eaf5fa;
  --text: #102f40;
  --text-dim: #4a6b7b;
  --brand-blue: #196b8e;
  --brand-blue-2: #25789b;
  --brand-blue-deep: #0f4f69;
  --brand-orange: #eb6218;
  --brand-orange-soft: #f08d57;
  --brand-accent: #7ccbe1;
  --line: rgba(164, 202, 218, 0.75);
  --line-strong: rgba(135, 181, 200, 0.85);
  --shadow: 0 10px 22px rgba(8, 43, 59, 0.13);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(920px 460px at 84% -14%, rgba(148, 218, 237, 0.18), transparent 64%),
    linear-gradient(180deg, #1d7397 0%, var(--bg-alt) 100%),
    var(--bg);
  min-height: 100vh;
  line-height: 1.65;
}

body.lang-en {
  font-family: "IBM Plex Sans", "Barlow", "Segoe UI", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(760px 360px at -10% 18%, rgba(255, 255, 255, 0.1), transparent 72%),
    linear-gradient(rgba(214, 240, 250, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(214, 240, 250, 0.06) 1px, transparent 1px);
  background-size: auto, 42px 42px, 42px 42px;
  opacity: 0.72;
  z-index: -1;
}

.container {
  width: min(1180px, 92vw);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #ffffff;
  backdrop-filter: none;
  border-bottom: 1px solid #d4e6ee;
  transition: all 0.28s ease;
}

.topbar.scrolled {
  background: #ffffff;
  border-bottom-color: #c6dde8;
  box-shadow: 0 8px 20px rgba(9, 49, 67, 0.12);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 112px;
  gap: 16px;
  transition: min-height 0.28s ease;
}

.topbar.scrolled .topbar-inner {
  min-height: 100px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
  color: var(--text);
  flex: 0 0 auto;
}

.brand-logo-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.brand img {
  height: 76px;
  width: auto;
  max-width: min(100%, 280px);
  aspect-ratio: 280 / 108;
  object-fit: contain;
  display: block;
}

.brand-name {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  width: 42px;
  height: 42px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--brand-blue-deep);
}

.nav-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 auto;
  justify-content: flex-end;
  min-width: 0;
}

.nav {
  display: flex;
  gap: 2px;
  flex-wrap: nowrap;
  min-width: 0;
}

.nav a {
  color: #38586a;
  text-decoration: none;
  white-space: nowrap;
  padding: 8px 10px;
  border-radius: 999px;
  font-size: 0.9rem;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.nav a:hover {
  color: var(--brand-blue-deep);
  background: rgba(25, 107, 142, 0.08);
  border-color: rgba(25, 107, 142, 0.18);
}

.nav a.active {
  color: #fff;
  background: var(--brand-blue);
  border-color: transparent;
  box-shadow: 0 6px 14px rgba(15, 79, 105, 0.22);
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  background: #fff;
}

.lang-switch button {
  border: 0;
  cursor: pointer;
  background: transparent;
  color: #4e6678;
  padding: 8px 11px;
  font-size: 0.84rem;
}

.lang-switch button.active {
  color: #fff;
  background: var(--brand-blue-deep);
}

main {
  padding: 36px 0 56px;
}

.page-shell {
  display: grid;
  gap: 22px;
}

.page-shell > * {
  min-width: 0;
}

.hero {
  position: relative;
  background: linear-gradient(160deg, rgba(248, 253, 255, 0.94) 0%, rgba(236, 247, 252, 0.92) 100%);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 2px);
  padding: clamp(24px, 4vw, 48px);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero::before {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(25, 107, 142, 0.2) 0%, rgba(25, 107, 142, 0) 72%);
}

.hero::after {
  content: "";
  position: absolute;
  left: 56%;
  top: -46px;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(235, 98, 24, 0.18) 0%, rgba(235, 98, 24, 0) 72%);
}

.hero > * {
  position: relative;
  z-index: 1;
}

.magazine-hero {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 18px;
  align-items: stretch;
}

.hero-side {
  display: grid;
  gap: 12px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #175774;
  background: rgba(25, 107, 142, 0.1);
  border: 1px solid rgba(25, 107, 142, 0.18);
  border-radius: 999px;
  padding: 4px 10px;
}

.pill.alt {
  color: #1f6685;
  background: rgba(62, 158, 193, 0.11);
  border-color: rgba(62, 158, 193, 0.2);
}

.pill.warn {
  color: #8b3e14;
  background: rgba(235, 98, 24, 0.14);
  border-color: rgba(235, 98, 24, 0.34);
}

h1,
h2,
h3 {
  margin: 0 0 10px;
  line-height: 1.25;
}

h1 {
  font-size: clamp(1.86rem, 3.6vw, 2.9rem);
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.26rem, 2.2vw, 1.78rem);
}

h3 {
  font-size: clamp(1.08rem, 1.8vw, 1.28rem);
}

.lead {
  color: var(--text-dim);
  max-width: 72ch;
}

.note {
  color: var(--text-dim);
  font-size: 0.92rem;
}

.section {
  margin-top: 6px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}

.section-head h2 {
  color: #e6f5fb;
  text-shadow: 0 1px 0 rgba(10, 58, 79, 0.2);
}

.section-head .note {
  color: rgba(227, 244, 251, 0.9);
}

.grid {
  display: grid;
  gap: 16px;
}

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

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

.grid-home {
  display: grid;
  grid-template-columns: 1.15fr 1fr 1fr;
  gap: 16px;
}

.card {
  background: linear-gradient(165deg, rgba(247, 253, 255, 0.92) 0%, rgba(237, 248, 252, 0.9) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 34px rgba(9, 52, 71, 0.16);
  border-color: var(--line-strong);
}

.card.feature {
  background: linear-gradient(155deg, rgba(250, 254, 255, 0.94), rgba(233, 246, 252, 0.9));
}

.card.feature h3 {
  color: #135a79;
}

a.card {
  color: var(--text);
  text-decoration: none;
  display: block;
}

.icon-head {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-weight: 700;
  color: #155b7a;
}

.icon-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--brand-orange);
}

.table-wrap {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(245, 252, 255, 0.94);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  padding: 11px 12px;
  font-size: 0.91rem;
  border-bottom: 1px solid #dbe9f0;
  text-align: left;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #e6f2f8;
  color: #145b79;
}

tbody tr:nth-child(even) {
  background: rgba(234, 246, 251, 0.65);
}

td[colspan] {
  min-width: 380px;
  white-space: normal;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline .card {
  border-left: 4px solid var(--brand-orange);
}



.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.showcase-card {
  border-top: 3px solid rgba(235, 98, 24, 0.42);
}

.showcase-card ul {
  margin: 0;
  padding-left: 18px;
}

.quick-links-grid {
  align-items: stretch;
}

.quick-link-card {
  border-left: 3px solid rgba(25, 107, 142, 0.3);
}

.quick-link-card h3 {
  margin-bottom: 6px;
}

.quick-link-card .note {
  margin: 0;
}

.product-solution-grid {
  margin-top: 2px;
}

.product-solution-card {
  border-top: 3px solid rgba(235, 98, 24, 0.34);
}

.product-solution-card ul {
  margin: 0;
  padding-left: 18px;
}

.spec-block {
  margin-top: 2px;
}

.spec-card {
  padding: 18px;
}

.spec-card h2 {
  margin: 0 0 12px;
}

.contact-card h3 {
  margin-top: 0;
  margin-bottom: 6px;
  color: #145b79;
}

.contact-map-link {
  margin-top: 14px;
}

.contact-map-link a {
  color: var(--brand-blue-deep);
  word-break: break-all;
}
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

footer {
  margin-top: 8px;
  border-top: 1px solid #d5e7ef;
  background: rgba(232, 245, 251, 0.95);
  padding: 28px 0 34px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 16px;
}

.footer-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 7px;
}

.footer-links a {
  color: #305365;
  text-decoration: none;
  display: inline-block;
  margin: 5px 8px 0 0;
}

.footer-links a:hover {
  color: var(--brand-orange);
}

.footer-copy {
  margin-top: 12px;
  color: #3f6476;
  font-size: 0.84rem;
}

@media (max-width: 1199px) {
  .brand img {
    height: 66px;
    width: auto;
    max-width: min(100%, 244px);
  }

  .nav-wrap {
    gap: 8px;
  }

  .nav {
    gap: 1px;
  }

  .nav a {
    padding: 7px 8px;
    font-size: 0.84rem;
  }

  .lang-switch button {
    padding: 7px 9px;
    font-size: 0.8rem;
  }

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

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

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

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

@media (max-width: 767px) {
  .topbar-inner {
    min-height: auto;
    flex-wrap: wrap;
    padding: 10px 0;
  }

  .brand img {
    height: 54px;
    width: auto;
    max-width: min(100%, 196px);
  }

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

  .nav-wrap {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-bottom: 8px;
  }

  .nav-wrap.open {
    display: flex;
  }

  .nav {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .nav a {
    text-align: center;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: #fff;
  }

  .lang-switch {
    align-self: flex-end;
  }

  .grid-3,
  .grid-2,
  .grid-home,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .brand-name {
    display: none;
  }
}