:root {
  --brand-blue: #0a8df7;
  --deep-blue: #06145e;
  --text-blue: #07145f;
  --line-blue: #138df2;
  --soft-blue: #eef8ff;
  --border: #d2e9fb;
  --shadow: 0 16px 42px rgba(7, 54, 112, .12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--text-blue);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background: linear-gradient(180deg, #f7fcff 0%, #fff 46%, #f7fcff 100%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(124px, 164px) minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(14px, 2vw, 34px);
  height: 82px;
  padding: 0 clamp(18px, 5vw, 74px);
  background: rgba(255, 255, 255, .98);
  box-shadow: 0 1px 0 rgba(3, 81, 146, .08);
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(124px, 13vw, 164px);
  height: 76px;
  overflow: hidden;
  background: #fff;
}

.brand-logo {
  display: block;
  width: 100%;
  height: 64px;
  object-fit: contain;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 2.4vw, 42px);
  height: 100%;
  min-width: 0;
}

.main-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 100%;
  font-size: clamp(15px, 1.05vw, 17px);
  font-weight: 700;
  white-space: nowrap;
}

.main-nav a.active::after {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 16px;
  height: 4px;
  border-radius: 999px;
  background: var(--line-blue);
  content: "";
}

.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.5vw, 22px);
  font-size: 16px;
  font-weight: 700;
}

.icon-button,
.language {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  border: 0;
  color: var(--deep-blue);
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.icon-button {
  width: 42px;
  font-size: 36px;
  line-height: 1;
}

.language {
  padding: 0;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 96px;
  height: 44px;
  padding: 0 20px;
  border-radius: 8px;
  color: #fff;
  background: var(--brand-blue);
  box-shadow: 0 8px 22px rgba(10, 141, 247, .22);
}

.hero {
  position: relative;
  min-height: clamp(410px, 29.7vw, 456px);
  padding: clamp(50px, 4vw, 62px) clamp(22px, 6vw, 92px);
  overflow: hidden;
  color: #fff;
  background-image: linear-gradient(90deg, rgba(5, 63, 124, .68) 0%, rgba(5, 82, 148, .42) 36%, rgba(5, 82, 148, .08) 60%, rgba(5, 82, 148, .02) 100%), url("assets/ChatGPT 图像 2026年9月26日 20_15_25.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.hero h1 {
  margin: 0 0 16px;
  color: #fff;
  font-size: clamp(46px, 4.8vw, 72px);
  line-height: 1.18;
  letter-spacing: 0;
  text-shadow: 0 6px 18px rgba(0, 58, 116, .18);
}

.hero p {
  margin: 0;
}

.hero-copy > p {
  font-size: clamp(22px, 2vw, 30px);
  font-weight: 700;
  line-height: 1.45;
  text-shadow: 0 4px 14px rgba(0, 58, 116, .22);
}

.hero-note {
  position: absolute;
  top: clamp(58px, 5vw, 74px);
  right: clamp(44px, 8vw, 145px);
  width: min(28vw, 310px);
  color: #fff;
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 500;
  line-height: 1.45;
  transform: rotate(-8deg);
  text-align: left;
  text-shadow: 0 5px 15px rgba(0, 59, 112, .28);
}

.hero-note::after {
  display: block;
  width: 210px;
  max-width: 100%;
  height: 28px;
  margin-top: 8px;
  border-top: 3px solid rgba(255, 255, 255, .92);
  border-bottom: 2px solid rgba(255, 255, 255, .72);
  transform: skewX(-28deg);
  content: "";
}

.content-band {
  display: grid;
  grid-template-columns: minmax(190px, 250px) minmax(0, 1fr);
  gap: clamp(24px, 3vw, 44px);
  padding: 22px clamp(18px, 5vw, 76px);
}

.product-band {
  background: linear-gradient(180deg, #f6fbff 0%, #eef8ff 100%);
}

.application-band {
  padding-top: 28px;
  padding-bottom: 44px;
  background: linear-gradient(180deg, #fff 0%, #fbfeff 100%);
}

.section-intro {
  padding-top: 6px;
}

.section-intro h2 {
  position: relative;
  margin: 0 0 28px;
  color: var(--deep-blue);
  font-size: clamp(32px, 2.6vw, 40px);
  line-height: 1.1;
}

.section-intro h2::after {
  position: absolute;
  left: 0;
  bottom: -17px;
  width: 42px;
  height: 4px;
  border-radius: 999px;
  background: var(--line-blue);
  content: "";
}

.section-intro p {
  margin: 0 0 18px;
  font-size: clamp(16px, 1.2vw, 18px);
  font-weight: 700;
  line-height: 1.75;
}

.section-intro a {
  color: #0084f4;
  font-size: 16px;
  font-weight: 700;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.product-card {
  position: relative;
  display: block;
  min-height: 220px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.card-image {
  display: block;
  aspect-ratio: 4 / 3;
  width: 100%;
  height: auto;
  object-fit: contain;
  background-color: #f4fbff;
}

.product-card h3,
.product-card p {
  margin-left: 24px;
  margin-right: 52px;
}

.product-card h3 {
  margin-top: 14px;
  margin-bottom: 8px;
  color: var(--deep-blue);
  font-size: clamp(15px, 1.2vw, 19px);
  line-height: 1.25;
}

.product-card p {
  margin-top: 0;
  margin-bottom: 18px;
  color: #376088;
  font-size: 14px;
  line-height: 1.65;
}

.card-arrow {
  position: absolute;
  right: 18px;
  bottom: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid #bfe2ff;
  border-radius: 50%;
  color: #088af4;
  font-weight: 700;
}

.series-page {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(30px, 5vw, 64px) 0;
}

.detail-page,
.shell-page {
  width: min(1440px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(30px, 5vw, 64px) 0;
}

.back-link {
  display: inline-flex;
  margin-bottom: 24px;
  color: #0084f4;
  font-size: 16px;
  font-weight: 700;
}

.series-overview {
  padding: clamp(28px, 5vw, 54px);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.page-kicker {
  margin: 0 0 8px;
  color: #0084f4;
  font-size: 18px;
  font-weight: 800;
}

.series-overview h1,
.detail-page h1 {
  margin: 0 0 clamp(24px, 4vw, 38px);
  color: var(--deep-blue);
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.15;
  letter-spacing: 0;
}

.series-list {
  display: grid;
  gap: 12px;
}

.series-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  min-height: 78px;
  padding: 18px 22px;
  border: 1px solid #d8edfd;
  border-radius: 8px;
  background: #f7fcff;
  color: var(--deep-blue);
}

.series-item span {
  color: #0084f4;
  font-size: 18px;
  font-weight: 800;
}

.series-item strong {
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.25;
}

.series-item em {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid #bfe2ff;
  border-radius: 50%;
  color: #088af4;
  font-style: normal;
  font-weight: 800;
}

.detail-image {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.application-showcase {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 26px rgba(7, 54, 112, .08);
}

.application-showcase img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #fff;
}

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

.application-card {
  display: block;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 26px rgba(7, 54, 112, .08);
}

.application-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.application-card h3 {
  margin: 0;
  padding: 16px 18px 18px;
  color: var(--deep-blue);
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.25;
}

.site-footer {
  padding: 34px clamp(18px, 5vw, 76px) 30px;
  border-top: 1px solid var(--border);
  background: #fff;
  color: var(--deep-blue);
}

.footer-nav,
.footer-company,
.footer-contact,
.footer-copy {
  width: min(1120px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 0;
  font-weight: 700;
}

.footer-company,
.footer-contact,
.footer-copy {
  margin-top: 12px;
  margin-bottom: 0;
  color: #376088;
  font-size: 14px;
  line-height: 1.6;
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
}

.shell-card {
  padding: clamp(28px, 5vw, 54px);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.shell-card h1 {
  margin: 0;
  color: var(--deep-blue);
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.15;
}

.page-header {
  min-width: 0;
  padding: clamp(28px, 5vw, 54px);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: linear-gradient(180deg, #fff 0%, #f6fbff 100%);
  box-shadow: var(--shadow);
}

.page-header h1 {
  position: relative;
  margin: 0;
  color: var(--deep-blue);
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.15;
}

.page-header h1::after {
  display: block;
  width: 46px;
  height: 4px;
  margin-top: 18px;
  border-radius: 999px;
  background: var(--line-blue);
  content: "";
}

.page-header p {
  width: 100%;
  max-width: 760px;
  margin: 18px 0 0;
  color: #376088;
  font-size: clamp(16px, 1.4vw, 18px);
  font-weight: 700;
  line-height: 1.75;
}

.content-stack {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  margin-top: clamp(24px, 4vw, 42px);
}

.shell-page > .content-stack:first-child {
  margin-top: 0;
}

.content-section {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.content-section h2 {
  margin: 0;
  color: var(--deep-blue);
  font-size: clamp(26px, 2.6vw, 36px);
  line-height: 1.2;
}

.content-section p {
  max-width: 820px;
  margin: 0;
  color: #376088;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.8;
}

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

.document-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.document-card {
  margin: 0;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.document-card img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: #fff;
}

.document-card figcaption {
  margin: 0;
  padding: 14px 18px 16px;
  color: var(--deep-blue);
  font-weight: 800;
  line-height: 1.45;
}

.document-card.wide,
.document-card.contact-card {
  width: 100%;
  max-width: 100%;
}

.contact-panel {
  display: grid;
  gap: 16px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.contact-panel h2 {
  margin: 0;
  color: var(--deep-blue);
  font-size: clamp(24px, 2.4vw, 32px);
}

.contact-panel p {
  margin: 0;
  color: #376088;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.8;
}

.inline-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 8px;
  color: #fff;
  background: var(--brand-blue);
  font-weight: 800;
  box-shadow: 0 8px 22px rgba(10, 141, 247, .22);
}

@media (max-width: 1100px) {
  .site-header {
    grid-template-columns: auto 1fr;
    height: auto;
    min-height: 82px;
    padding-block: 8px;
  }

  .main-nav {
    order: 3;
    grid-column: 1 / -1;
    justify-content: flex-start;
    height: 44px;
  }

  .main-nav a.active::after {
    bottom: 4px;
  }

  .header-actions {
    justify-content: flex-end;
  }

  .content-band {
    grid-template-columns: 1fr;
  }

  .section-intro {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 6px 20px;
    align-items: end;
  }

  .section-intro h2,
  .section-intro p {
    grid-column: 1;
  }

  .section-intro a {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
  }

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

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

}

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 8px 16px 10px;
  }

  .brand {
    width: 142px;
    height: 68px;
  }

  .main-nav,
  .header-actions {
    justify-content: flex-start;
    width: 100%;
  }

  .main-nav {
    flex-wrap: wrap;
    gap: 8px 10px;
    height: auto;
    min-height: 44px;
  }

  .main-nav a {
    font-size: 14px;
  }

  .header-actions {
    flex-wrap: wrap;
    padding-bottom: 2px;
  }

  .contact-button {
    min-width: 92px;
  }

  .hero {
    min-height: 620px;
    padding: 42px 20px;
    background-size: cover;
    background-position: 58% center;
  }

  .hero::before {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(0, 88, 159, .62) 0%, rgba(0, 104, 174, .24) 64%, rgba(0, 104, 174, .08) 100%);
    content: "";
  }

  .hero h1 {
    max-width: 9em;
    font-size: clamp(34px, 9vw, 42px);
  }

  .hero-copy > p {
    font-size: 22px;
  }

  .hero-note {
    top: auto;
    left: 20px;
    right: 20px;
    bottom: 34px;
    width: auto;
    font-size: 18px;
    transform: none;
  }

  .section-intro {
    display: block;
  }

  .section-intro a {
    display: inline-flex;
    margin-bottom: 6px;
  }

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

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

  .product-card {
    min-height: 236px;
  }

  .series-page,
  .detail-page,
  .shell-page {
    width: auto;
    margin-left: 14px;
    margin-right: 14px;
    padding: 28px 0;
  }

  .page-header,
  .contact-panel {
    padding: 24px 18px;
  }

  .page-header p,
  .content-section p,
  .contact-panel p {
    max-width: 100%;
    min-width: 0;
    overflow-wrap: anywhere;
    word-break: break-all;
  }

  .document-card,
  .document-card.wide {
    width: 100%;
    max-width: 100%;
  }

  .series-overview {
    padding: 24px 18px;
  }

  .series-item {
    grid-template-columns: 1fr auto;
    gap: 8px 14px;
  }

  .series-item span {
    grid-column: 1 / -1;
  }

}