:root {
  --color-primary: #0B1D2A;
  --color-primary-soft: #1E3A5F;
  --color-accent: #FF7A00;
  --color-surface: #F5F7FA;
  --color-text: #1A2B34;
  --color-gradient-blue: #3D6B8E;
  --color-gradient-light: #E8F0F6;
  --color-white: #FFFFFF;
  --color-success: #00C48C;
  --color-warning: #FF4757;
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-pill: 999px;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --container: 1180px;
  --shadow-soft: 0 12px 30px rgba(11, 29, 42, 0.08);
  --progress: 0;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-surface);
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
}

#main-content {
  display: block;
  min-height: 60vh;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1100;
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 0.75rem 1rem;
  border-radius: 0 0 12px 0;
  text-decoration: none;
  font-weight: 700;
}

.skip-link:focus {
  left: 0;
}

.site-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1002;
  width: 100%;
  height: 5px;
  background: rgba(255, 255, 255, 0.12);
  pointer-events: none;
}

.site-progress::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--color-gradient-blue), var(--color-accent));
  transform: scaleX(var(--progress, 0));
  transform-origin: 0 50%;
  transition: transform 0.15s linear;
}

.masthead {
  position: relative;
  z-index: 50;
  background: var(--color-primary);
  color: var(--color-white);
  overflow: hidden;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  box-shadow: var(--shadow-soft);
}

.masthead::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(61, 107, 142, 0.5), transparent 70%);
  top: -130px;
  right: -70px;
  pointer-events: none;
}

.masthead::after {
  content: "";
  position: absolute;
  width: 90px;
  height: 90px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-gradient-blue));
  left: 8%;
  bottom: 20px;
  opacity: 0.2;
  transform: rotate(18deg);
  pointer-events: none;
}

.masthead__inner {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.25rem 1.5rem 1.5rem;
}

.masthead__topline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-lockup__index {
  margin: 0 0 0.5rem;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-lockup__link {
  display: inline-flex;
  align-items: center;
  gap: 0.875rem;
  text-decoration: none;
  color: var(--color-white);
}

.brand-lockup__mark {
  position: relative;
  display: inline-flex;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  align-items: center;
  justify-content: center;
}

.brand-lockup__square {
  width: 26px;
  height: 26px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-gradient-blue));
  border-radius: 9px;
  transform: rotate(18deg);
  position: relative;
}

.brand-lockup__dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-success);
  border: 2px solid var(--color-primary);
}

.brand-lockup__text {
  display: flex;
  flex-direction: column;
}

.brand-lockup__text strong {
  font-size: 1.65rem;
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.brand-lockup__text small {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.15rem;
  letter-spacing: 0.04em;
}

.masthead__actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding-top: 1.5rem;
}

.quick-entry {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--color-accent);
  color: var(--color-primary);
  border-radius: var(--radius-pill);
  padding: 0.65rem 1.1rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(255, 122, 0, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.quick-entry:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(255, 122, 0, 0.42);
}

.quick-entry::after {
  content: "→";
  font-size: 1.1em;
  line-height: 1;
}

.quick-entry__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

.masthead__navline {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.masthead__axis {
  margin: 0;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  border-radius: var(--radius-pill);
  padding: 0.5rem 0.9rem;
  font-family: inherit;
  font-size: 0.8125rem;
  cursor: pointer;
}

.nav-toggle__label {
  font-weight: 600;
}

.nav-toggle__bar {
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: relative;
  transition: transform 0.25s ease;
}

.nav-toggle__bar::before,
.nav-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
}

.nav-toggle__bar::before {
  top: -6px;
}

.nav-toggle__bar::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before {
  top: 0;
  transform: rotate(90deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after {
  opacity: 0;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.25rem;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  position: relative;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-pill);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.site-nav__link:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.15rem;
  height: 3px;
  border-radius: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.2s ease;
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-white);
}

.site-nav__link[aria-current="page"]::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-right: 0.4rem;
}

.site-footer {
  position: relative;
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.82);
  margin-top: var(--space-6);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(61, 107, 142, 0.45), transparent 70%);
  right: -100px;
  bottom: -160px;
  pointer-events: none;
}

.site-footer__map {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
  color: rgba(255, 255, 255, 0.5);
}

.site-footer__map-item {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 0.75rem;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(255, 122, 0, 0.7);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 122, 0, 0.08);
}

.site-footer__map-line {
  flex: 1;
  height: 1px;
  min-width: 2rem;
  background: linear-gradient(90deg, rgba(255, 122, 0, 0.6), rgba(255, 122, 0, 0.08));
}

.site-footer__map-item--a {
  color: var(--color-accent);
}

.site-footer__map-item--b {
  color: var(--color-success);
  border-color: rgba(0, 196, 140, 0.6);
}

.site-footer__map-item--c {
  color: var(--color-gradient-blue);
  border-color: rgba(61, 107, 142, 0.8);
}

.site-footer__inner {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: 3rem 1.5rem 1.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 0.85fr);
  gap: 2.5rem;
  align-items: start;
}

.footer-panel {
  min-width: 0;
}

.footer-panel--contact {
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  padding-left: 1.5rem;
}

.footer-panel--links {
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  padding-left: 1.5rem;
}

.footer-panel__eyebrow {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--color-white);
  letter-spacing: 0.05em;
}

.footer-panel__statement {
  font-size: 0.9375rem;
  max-width: 34em;
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer-panel__title {
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.75rem;
  font-weight: 700;
}

.footer-contact__line {
  margin: 0.3rem 0;
  overflow-wrap: anywhere;
}

.footer-link {
  display: block;
  width: fit-content;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  padding: 0.35rem 0;
  position: relative;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--color-white);
}

.footer-link::before {
  content: "→ ";
  color: var(--color-accent);
}

.site-footer__bottom {
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 1rem;
}

.site-footer__bottom-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer__meta {
  margin: 0;
  font-size: 0.875rem;
}

.site-footer__icp {
  margin: 0 auto;
  padding: 0 1.5rem 1rem;
  max-width: var(--container);
  font-size: 0.75rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.45);
}

.site-footer__backtop {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--color-white);
  border-radius: var(--radius-pill);
  padding: 0.45rem 0.9rem;
  font-family: inherit;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.site-footer__backtop:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-accent);
}

.site-footer__backtop::before {
  content: "↑";
}

.container {
  width: min(100% - 3rem, var(--container));
  margin-inline: auto;
}

.section {
  padding: var(--space-6) 0;
}

.section--tint {
  background: var(--color-gradient-light);
}

.page-shell {
  padding: var(--space-5) 0 var(--space-6);
}

.page-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: var(--space-5);
}

.page-heading__kicker {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.5rem;
}

.page-heading h1 {
  font-size: clamp(2rem, 6vw, 4.5rem);
  line-height: 1.05;
  margin: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text);
  margin: 0 0 var(--space-4);
  padding: 0;
  list-style: none;
}

.breadcrumb a {
  color: var(--color-primary-soft);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--color-gradient-blue);
}

.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(12, 1fr);
}

.grid__item {
  grid-column: span 4;
  min-width: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 2px solid transparent;
  border-radius: var(--radius-pill);
  padding: 0.7rem 1.35rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-primary);
}

.btn--primary:hover {
  transform: translateY(-2px);
  background: #ff8c26;
}

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-gradient-blue);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.media-frame {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--color-gradient-light), var(--color-white));
  overflow: hidden;
}

.media-frame--16x9::before,
.media-frame--4x3::before,
.media-frame--phone::before {
  content: "";
  display: block;
}

.media-frame--16x9::before {
  padding-top: 56.25%;
}

.media-frame--4x3::before {
  padding-top: 75%;
}

.media-frame--phone::before {
  padding-top: 116%;
}

.media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  text-align: center;
  color: var(--color-primary-soft);
  font-size: 0.875rem;
  background:
    linear-gradient(135deg, rgba(255, 122, 0, 0.08), transparent 40%),
    radial-gradient(circle at 70% 20%, rgba(61, 107, 142, 0.16), transparent 60%);
}

.tabs {
  border-radius: var(--radius-lg);
  background: var(--color-white);
  padding: 1.25rem;
  box-shadow: var(--shadow-soft);
}

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0.25rem;
  background: var(--color-gradient-light);
  border-radius: var(--radius-pill);
  width: fit-content;
  max-width: 100%;
  overflow-x: auto;
}

.tabs__button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--color-text);
  border-radius: var(--radius-pill);
  padding: 0.6rem 1.1rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.tabs__button[aria-selected="true"] {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(11, 29, 42, 0.2);
}

.tabs__panel {
  background: var(--color-white);
  border-radius: var(--radius-md);
}

.tabs__panel[hidden] {
  display: none;
}

@media (max-width: 900px) {
  .masthead__navline {
    justify-content: flex-end;
  }

  .masthead__axis {
    display: none;
  }

  .site-nav {
    width: 100%;
    justify-content: flex-start;
    margin-top: 0.75rem;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-panel--brand {
    grid-column: 1 / -1;
  }

  .grid__item {
    grid-column: span 6;
  }
}

@media (max-width: 767px) {
  .masthead__inner {
    padding: 1rem 1.25rem 1.25rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    width: 100%;
    margin-top: 0.75rem;
    padding-top: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .site-nav[data-open] {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .site-nav__link {
    display: flex;
    border-radius: var(--radius-md);
    padding: 0.8rem 0.9rem;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__link[aria-current="page"] {
    background: rgba(255, 122, 0, 0.12);
  }
}

@media (max-width: 599px) {
  .site-footer__map {
    display: none;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-top: 2rem;
  }

  .footer-panel--contact,
  .footer-panel--links {
    border-left: 0;
    padding-left: 0;
  }

  .site-footer__bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .grid__item {
    grid-column: span 12;
  }

  .page-heading {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

@media (max-width: 480px) {
  .brand-lockup__text strong {
    font-size: 1.4rem;
  }

  .quick-entry {
    padding: 0.55rem 0.85rem;
    font-size: 0.875rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .site-progress::before {
    transition: none;
  }
}