:root {
  --portal-nav-height: 60px;
  --portal-nav-max-width: 1240px;
}

html,
body {
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body.ds {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

.portal-main {
  padding-top: var(--portal-nav-height);
  flex: 1 0 auto;
}

.portal-main section[id] {
  scroll-margin-top: calc(var(--portal-nav-height) + 8px);
}

.portal-nav {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.96), rgba(246, 250, 255, 0.92));
  border-bottom: 1px solid var(--ds-color-border);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
  min-height: var(--portal-nav-height);
  margin-bottom: 0;
  backdrop-filter: saturate(180%) blur(6px);
}

.portal-nav .container {
  max-width: var(--portal-nav-max-width);
  width: 100%;
  min-height: var(--portal-nav-height);
  padding-left: 20px;
  padding-right: 20px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.portal-nav .navbar-header {
  float: none;
  margin: 0;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
}

.portal-nav .navbar-brand {
  height: auto;
  min-height: var(--portal-nav-height);
  padding: 0;
  display: flex;
  align-items: center;
  overflow: visible;
}

.portal-brand-text {
  display: inline-flex;
  align-items: center;
  font-size: 30px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #1e3a8a;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 55%, #0f172a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-transform: none;
  white-space: nowrap;
  padding-bottom: 0;
}

@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .portal-brand-text {
    color: #1e3a8a;
    -webkit-text-fill-color: currentColor;
    background: none;
  }
}

.portal-nav .nav {
  display: flex;
  align-items: center;
  min-height: var(--portal-nav-height);
  gap: 4px;
  flex-wrap: nowrap;
  margin: 0;
  padding-left: 0;
}

.portal-nav .nav > li + li {
  margin-left: 4px;
}

.portal-nav .nav > li {
  float: none;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
}

.portal-nav .nav > li > a {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ds-color-text);
  font-size: var(--ds-font-size-sm);
  font-weight: 600;
  padding: 8px 12px;
  min-height: 38px;
  line-height: 1.2;
  border-radius: var(--ds-radius-pill);
  background: transparent !important;
}

.portal-nav .nav > li > a:hover,
.portal-nav .nav > li > a:focus {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(8, 145, 178, 0.08)) !important;
  color: var(--ds-color-primary);
}

.portal-nav .nav > li.active > a,
.portal-nav .nav > li.active > a:hover,
.portal-nav .nav > li.active > a:focus {
  color: var(--ds-color-primary) !important;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(79, 70, 229, 0.12)) !important;
  border-radius: var(--ds-radius-pill) !important;
}

.portal-nav .nav.nav-pills > li + li {
  margin-left: 0;
}

.portal-section-head {
  max-width: var(--ds-content-max);
  margin-bottom: var(--ds-space-8);
}

.portal-section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.portal-kicker {
  display: inline-block;
  margin-bottom: var(--ds-space-3);
  color: var(--ds-color-text-muted);
  font-size: var(--ds-font-size-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.portal-list {
  margin: var(--ds-space-4) 0 0;
  padding-left: 18px;
}

.portal-list li {
  color: var(--ds-color-text-muted);
  margin-bottom: var(--ds-space-2);
}

.portal-actions {
  display: flex;
  gap: var(--ds-space-3);
  margin-top: var(--ds-space-5);
  flex-wrap: wrap;
}

.portal-faq-list .faq {
  margin-bottom: var(--ds-space-3);
}

.portal-faq-list .faq:last-child {
  margin-bottom: 0;
}

.portal-faq-list .faq__q {
  cursor: default;
}

.portal-login-box {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.notfound-hero {
  min-height: calc(100vh - var(--portal-nav-height) - 180px);
  display: flex;
  align-items: center;
}

.notfound-shell {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.notfound-title {
  font-size: clamp(40px, 5vw, 64px);
  letter-spacing: -0.04em;
  margin-bottom: var(--ds-space-4);
}

.notfound-subtitle,
.notfound-note {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.notfound-note {
  font-size: var(--ds-font-size-sm);
}

.notfound-actions {
  justify-content: center;
}

.notfound-signal {
  position: relative;
  width: min(340px, 92%);
  height: 180px;
  margin: 0 auto var(--ds-space-6);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 28px;
  background:
    radial-gradient(circle at 20% 24%, rgba(37, 99, 235, 0.16), transparent 28%),
    radial-gradient(circle at 82% 22%, rgba(8, 145, 178, 0.14), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 248, 255, 0.94));
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

.notfound-signal strong {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 72px;
  line-height: 1;
  letter-spacing: -0.06em;
  color: var(--color-brand-primary-strong);
}

.notfound-signal__ring {
  position: absolute;
  inset: 18px;
  border-radius: 22px;
  border: 1px solid rgba(37, 99, 235, 0.16);
}

.notfound-signal__route {
  position: absolute;
  left: 54px;
  right: 54px;
  top: 92px;
  height: 2px;
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.22), rgba(79, 70, 229, 0.28), rgba(8, 145, 178, 0.22));
}

.notfound-signal__dot {
  position: absolute;
  top: 84px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.18);
}

.notfound-signal__dot--start {
  left: 50px;
  background: #2563eb;
}

.notfound-signal__dot--mid {
  left: calc(50% - 9px);
  background: #4f46e5;
}

.notfound-signal__dot--end {
  right: 50px;
  background: #0891b2;
}

.quick-link-grid {
  display: flex;
  flex-wrap: wrap;
}

.quick-link-card .portal-actions {
  margin-top: auto;
}

.seo-card-grid {
  display: flex;
  flex-wrap: wrap;
}

.seo-card-grid > [class*="col-"] {
  margin-bottom: var(--ds-space-4);
}

.seo-directory-card h3 a {
  color: inherit;
  text-decoration: none;
}

.seo-directory-card h3 a:hover,
.seo-directory-card h3 a:focus {
  color: var(--ds-color-primary);
  text-decoration: none;
}

.carrier-grid > [class*="col-"] {
  margin-bottom: 0;
}

.carrier-grid {
  margin-bottom: 0;
}

.carrier-grid + .carrier-grid {
  margin-top: 0;
}

.portal-footer {
  padding: var(--ds-space-8) 0;
  text-align: center;
  color: var(--ds-color-text-muted);
  font-size: var(--ds-font-size-sm);
  margin-top: auto;
}

.portal-footer .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.portal-footer__icp {
  color: inherit;
  word-break: break-word;
}

.portal-footer__links {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.portal-footer__link {
  color: inherit;
  text-decoration: none;
}

.portal-footer__link:hover,
.portal-footer__link:focus {
  color: var(--ds-color-primary);
  text-decoration: none;
}

.i18n-en {
  display: none;
}

html[lang="en"] .i18n-zh {
  display: none;
}

html[lang="en"] .i18n-en {
  display: inline;
}

@media (max-width: 991px) {
  :root {
    --portal-nav-height: 54px;
  }

  .portal-main {
    padding-top: var(--portal-nav-height);
  }

  .portal-nav .container {
    padding-left: 12px;
    padding-right: 12px;
  }

  .portal-brand-text {
    font-size: 24px;
  }

  .portal-nav .nav > li > a {
    padding: 7px 9px;
    font-size: 13px;
    min-height: 34px;
  }

  .portal-nav .nav {
    gap: 2px;
  }

  .portal-split > [class*="col-"] + [class*="col-"] {
    margin-top: var(--ds-space-7);
  }

  .portal-split .portal-actions {
    margin-bottom: var(--ds-space-6);
  }

  .portal-split {
    margin-bottom: var(--ds-space-3);
  }
}

@media (max-width: 767px) {
  :root {
    --portal-nav-height: 52px;
  }

  .portal-nav .container,
  .portal-main .container,
  .portal-footer .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .portal-main {
    padding-top: var(--portal-nav-height);
  }

  .portal-nav .nav {
    gap: 2px;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    max-width: calc(100vw - 178px);
    scrollbar-width: none;
  }

  .portal-nav .nav::-webkit-scrollbar {
    display: none;
  }

  .portal-nav .nav > li > a {
    padding: 5px 8px;
    font-size: 11px;
    min-height: 32px;
  }

  .portal-brand-text {
    font-size: 20px;
    letter-spacing: -0.01em;
  }

  .portal-actions {
    flex-direction: column;
    gap: var(--ds-space-2);
    margin-top: var(--ds-space-4);
    margin-bottom: var(--ds-space-3);
  }

  .portal-nav .nav > li + li {
    margin-left: 2px;
  }

  .section--hero .row {
    margin-left: 0;
    margin-right: 0;
  }

  .section--hero .row > [class*="col-"] {
    padding-left: 0;
    padding-right: 0;
  }

  .section--hero .js-hero-title,
  .section--hero h1 {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .section--hero .js-hero-subtitle,
  .section--hero .portal-list li {
    overflow-wrap: break-word;
  }

  .section--hero .row > [class*="col-"] + [class*="col-"] {
    margin-top: var(--ds-space-5);
  }

  .portal-faq-list {
    margin-top: var(--ds-space-5) !important;
  }

  .carrier-grid > [class*="col-"] {
    margin-bottom: 0;
    float: none;
    width: 100%;
  }

  .carrier-grid + .carrier-grid {
    margin-top: 0;
  }

  .seo-card-grid > [class*="col-"] {
    float: none;
    width: 100%;
  }

  .portal-footer {
    padding: var(--ds-space-6) 0;
    font-size: var(--ds-font-size-xs);
  }

  .portal-footer .container {
    flex-direction: column;
    gap: 4px;
  }

  .portal-footer__sep {
    display: none;
  }

  .portal-footer__links {
    gap: 8px;
  }

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

  .notfound-title {
    font-size: clamp(34px, 10vw, 48px);
  }

  .notfound-signal {
    height: 156px;
    border-radius: 24px;
  }

  .notfound-signal strong {
    font-size: 60px;
  }

  .notfound-signal__route {
    left: 40px;
    right: 40px;
    top: 80px;
  }

  .notfound-signal__dot {
    top: 72px;
  }

  .notfound-signal__dot--start {
    left: 36px;
  }

  .notfound-signal__dot--end {
    right: 36px;
  }
}

@media (max-width: 420px) {
  .portal-brand-text {
    font-size: 17px;
    letter-spacing: 0;
  }

  .portal-nav .nav {
    max-width: calc(100vw - 146px);
  }
}

@supports not (gap: 1rem) {
  .portal-nav .nav {
    gap: 0;
  }

  .portal-actions {
    gap: 0;
  }
}