body {
  margin: 0;
  color: #13212e;
  background: #f4f8fb;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
}

main.pb7 {
  padding-bottom: 0;
}

.wrap {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}

.corp-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid #d6e3ea;
  backdrop-filter: blur(8px);
}

.nav-row {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.menu-toggle {
  display: none;
  border: 1px solid #cddde6;
  background: #fff;
  color: #163344;
  border-radius: 8px;
  padding: 8px 12px;
  font-weight: 700;
}

.brand {
  text-decoration: none;
  color: #0c4c65;
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 800;
  letter-spacing: 0.03em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  justify-content: flex-end;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: #143244;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
  transition: color 0.25s ease;
}

.nav-link:hover {
  color: #0f80a5;
}

.sub-menu {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 156px;
  background: #fff;
  border: 1px solid #d5e2e8;
  border-radius: 10px;
  box-shadow: 0 12px 26px rgba(8, 36, 54, 0.14);
  padding: 6px;
}

.sub-link {
  display: block;
  text-decoration: none;
  color: #1d3445;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
}

.sub-link:hover {
  background: #edf5fa;
  color: #0d6e8f;
}

.has-children:hover .sub-menu {
  display: block;
}

.corp-hero {
  background: linear-gradient(120deg, #0a4560 0%, #0d6786 45%, #1aa8b9 100%);
  position: relative;
  overflow: hidden;
}

.hero-slider {
  position: relative;
  padding-bottom: 18px;
}

.hero-slide {
  display: none;
}

.hero-slide.is-active {
  display: block;
}

.corp-hero::before,
.corp-hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.corp-hero::before {
  width: 480px;
  height: 480px;
  background: rgba(255, 255, 255, 0.08);
  top: -210px;
  right: -120px;
}

.corp-hero::after {
  width: 420px;
  height: 420px;
  background: rgba(255, 255, 255, 0.06);
  left: -160px;
  bottom: -210px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 36px;
  align-items: center;
  min-height: 560px;
  padding: 30px 0;
  position: relative;
  z-index: 1;
}

.hero-dots {
  margin-top: -4px;
  display: flex;
  justify-content: center;
  gap: 8px;
  position: relative;
  z-index: 2;
}

.hero-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.88);
  background: transparent;
  cursor: pointer;
}

.hero-dot.is-active {
  background: #fff;
}

.kicker {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #1288aa;
}

.hero-copy .kicker {
  color: rgba(255, 255, 255, 0.88);
}

.hero-copy h1 {
  margin: 12px 0 18px;
  font-size: clamp(30px, 4vw, 56px);
  line-height: 1.1;
  color: #fff;
}

.hero-copy .lead {
  margin: 0;
  max-width: 600px;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.85;
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid transparent;
  transition: all 0.25s ease;
}

.btn-primary {
  background: #fff;
  color: #0b506a;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(8, 20, 31, 0.28);
}

.btn-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.7);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
}

.hero-media img,
.biz-card img,
.contact-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 14px;
}

.hero-media img {
  border: 3px solid rgba(255, 255, 255, 0.32);
  box-shadow: 0 18px 40px rgba(4, 16, 28, 0.32);
}

.corp-section {
  padding: 72px 0;
}

.bg-light {
  background: #edf4f8;
}

.corp-section h2 {
  margin: 10px 0 16px;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.2;
}

.section-intro {
  margin: 0;
  max-width: 760px;
  color: #536675;
  line-height: 1.86;
}

.stats-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.stats-grid article {
  background: #fff;
  border: 1px solid #d3e2e9;
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}

.stats-grid strong {
  display: block;
  color: #0d5f7c;
  font-size: clamp(24px, 2.6vw, 36px);
}

.stats-grid span {
  color: #607586;
}

.card-grid {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.case-grid {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.case-card {
  background: #fff;
  border-radius: 14px;
  border: 1px solid #d5e2e8;
  overflow: hidden;
}

.biz-card {
  background: #fff;
  border-radius: 14px;
  border: 1px solid #d5e2e8;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.biz-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 30px rgba(8, 38, 52, 0.12);
}

.card-body {
  padding: 18px;
}

.card-body h3 {
  margin: 0 0 10px;
  font-size: 21px;
}

.card-body p {
  margin: 0;
  color: #5e7281;
  line-height: 1.72;
}

.news-list {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.news-item {
  text-decoration: none;
  background: #fff;
  border: 1px solid #d6e2e9;
  border-left: 4px solid #0f7c9f;
  border-radius: 10px;
  padding: 16px 18px;
}

.news-item h4 {
  margin: 0 0 8px;
  color: #1c2f3f;
  font-size: 18px;
}

.news-item p {
  margin: 0;
  color: #617685;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: center;
}

.quick-access {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn-contact {
  text-decoration: none;
  border: 1px solid #c2d5df;
  color: #1a3648;
  background: #fff;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 700;
}

.btn-contact:hover {
  border-color: #0f80a5;
  color: #0f80a5;
}

.contact-panel {
  background: #fff;
  border: 1px solid #d6e3ea;
  border-radius: 14px;
  padding: 20px;
}

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

.inquiry-form h3 {
  margin: 0 0 6px;
  font-size: 22px;
}

.inquiry-form label {
  color: #284255;
  font-size: 14px;
}

.inquiry-form input,
.inquiry-form textarea {
  border: 1px solid #d2e0e8;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
}

.inquiry-form textarea {
  min-height: 112px;
  resize: vertical;
}

.inquiry-form button {
  margin-top: 4px;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 700;
  color: #fff;
  background: #0f7c9f;
  cursor: pointer;
}

.form-message {
  min-height: 22px;
  margin: 0;
  font-size: 14px;
}

.form-message.success {
  color: #116837;
}

.form-message.error {
  color: #ad2638;
}

.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 30;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
  background: #0d7091;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.2s ease;
}

.to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.contact-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.contact-list li {
  margin-bottom: 10px;
  color: #5a7081;
}

.contact-list strong {
  color: #162734;
}

.corp-footer {
  background: #0b1c26;
  color: rgba(255, 255, 255, 0.85);
}

.footer-grid {
  padding: 38px 0 30px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 22px;
}

.footer-grid h5 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 17px;
}

.footer-grid p,
.footer-grid a {
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  display: block;
}

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

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
  padding: 14px 16px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
}

@media (max-width: 980px) {
  .hero-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    min-height: auto;
    padding: 72px 0;
  }

  .stats-grid,
  .card-grid,
  .case-grid,
  .news-list,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  .wrap {
    width: min(1200px, calc(100% - 30px));
  }

  .nav-row {
    min-height: 64px;
    padding: 10px 0;
    align-items: center;
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: inline-block;
    margin-left: auto;
  }

  .main-nav {
    width: 100%;
    display: none;
    padding: 8px 0 4px;
    gap: 8px;
    flex-direction: column;
    align-items: stretch;
  }

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

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: block;
    border: 1px solid #d5e2e8;
    border-radius: 10px;
    background: #fff;
    padding: 11px 12px;
  }

  .sub-menu {
    display: block;
    position: static;
    box-shadow: none;
    border: 0;
    border-radius: 0;
    padding: 6px 0 0 10px;
    min-width: 0;
  }

  .sub-link {
    padding: 8px 0;
    border-bottom: 1px dashed #dde8ee;
  }

  .corp-section {
    padding: 56px 0;
  }

  .stats-grid,
  .card-grid,
  .case-grid,
  .news-list,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .to-top {
    right: 14px;
    bottom: 14px;
  }
}