:root {
  --c-black: #111111;
  --c-white: #ffffff;
  --c-light: #f5f5f5;
  --c-mid: #bfbfbf;
  --c-gray: #4d4d4d;
  --c-orange: #e85d2a;
  --c-blue: #1b6b8f;
  --c-green: #4a7c3f;
  --font-display: "Arial Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --container: 1360px;
  --gutter: 24px;
  --transition: 0.18s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--c-white);
  color: var(--c-black);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
}

ul,
ol {
  list-style: none;
}

a {
  color: var(--c-orange);
  text-decoration: none;
}

a:hover {
  color: var(--c-black);
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

::selection {
  background: var(--c-black);
  color: var(--c-white);
}

:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 3px;
}

#main-content {
  scroll-margin-top: 96px;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  color: var(--c-black);
  line-height: 1.2;
  text-wrap: balance;
}

h1 {
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.1;
}

h2 {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.25;
}

h3 {
  font-size: 20px;
  line-height: 1.3;
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 300;
  padding: 10px 16px;
  background: var(--c-orange);
  color: #fff;
  font-weight: 700;
  transform: translateY(-300%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

.scroll-progress {
  --progress: 0;
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 110;
  pointer-events: none;
}

.scroll-progress::before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  background: var(--c-orange);
  transform: scaleX(var(--progress));
  transform-origin: left center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-white);
  border-bottom: 1px solid var(--c-black);
}

.header-topline {
  position: relative;
  height: 4px;
  background: var(--c-black);
}

.header-topline::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 128px;
  background: var(--c-orange);
}

.header-inner {
  display: flex;
  align-items: stretch;
  min-height: 72px;
}

.site-header .brand {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 10px;
  padding-right: 24px;
  border-right: 1px solid var(--c-mid);
  color: var(--c-black);
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--c-black);
  color: #fff;
  font-family: var(--font-display);
  font-size: 14px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-text small {
  font-size: 11px;
  color: var(--c-gray);
  letter-spacing: 0.14em;
}

.site-nav {
  display: flex;
  align-items: stretch;
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: stretch;
}

.nav-item {
  display: flex;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0 18px;
  border-left: 1px solid var(--c-mid);
  color: var(--c-black);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover {
  background: var(--c-black);
  color: #fff;
}

.nav-link[aria-current="page"] {
  background: var(--c-orange);
  color: #fff;
}

.nav-link[aria-current="page"]:hover {
  background: var(--c-orange);
  color: #fff;
}

.header-actions {
  display: flex;
  align-items: stretch;
}

.search-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  border-left: 1px solid var(--c-mid);
  border-right: 1px solid var(--c-mid);
  color: var(--c-black);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: background var(--transition), color var(--transition);
}

.search-link:hover {
  background: var(--c-black);
  color: #fff;
}

.search-icon {
  position: relative;
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid currentColor;
}

.search-icon::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 9px;
  width: 7px;
  height: 2px;
  background: currentColor;
  transform: rotate(45deg);
}

.search-text {
  font-size: 12px;
}

.nav-toggle {
  display: none;
}

.site-footer {
  background: var(--c-black);
  color: #fff;
  border-top: 4px solid var(--c-orange);
}

.footer-frame {
  max-width: var(--container);
  margin-inline: auto;
  padding: 56px var(--gutter) 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 40px;
}

.footer-col,
.footer-brand-col,
.footer-contact-col {
  min-width: 0;
}

.footer-brand-name {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.2;
  color: #fff;
}

.footer-brand-name:hover {
  color: var(--c-orange);
}

.footer-brand-en {
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-mid);
}

.footer-trust {
  max-width: 320px;
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid var(--c-orange);
  color: #bfbfbf;
  font-size: 14px;
  line-height: 1.7;
}

.footer-title {
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: #fff;
}

.footer-list {
  display: grid;
  gap: 10px;
}

.footer-list a {
  display: inline-block;
  color: #bfbfbf;
  font-size: 14px;
  transition: color var(--transition), padding-left var(--transition);
}

.footer-list a:hover {
  padding-left: 4px;
  color: var(--c-orange);
}

.footer-contact-list li {
  display: flex;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid #2b2b2b;
  color: #bfbfbf;
  font-size: 14px;
}

.footer-contact-label {
  flex: none;
  min-width: 42px;
  color: #fff;
  font-weight: 700;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid #2b2b2b;
  color: var(--c-mid);
  font-size: 13px;
}

.footer-copyright,
.footer-icp {
  margin: 0;
}

.footer-icp {
  letter-spacing: 0.05em;
}

.section {
  padding: 80px 0;
}

.section-light {
  background: var(--c-light);
}

.section-dark {
  background: var(--c-black);
  color: #fff;
}

.section-dark .section-title {
  color: #fff;
}

.section-dark .section-desc {
  color: #bfbfbf;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.2;
}

.section-desc {
  max-width: 640px;
  color: var(--c-gray);
  font-size: 16px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--c-blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--c-orange);
}

.grid {
  display: grid;
  gap: 24px;
}

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

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-span-2 {
  grid-column: span 2;
}

.grid-span-3 {
  grid-column: span 3;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
}

.page-hero {
  padding: 56px 0 40px;
  background: var(--c-light);
  border-bottom: 1px solid var(--c-black);
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.1;
}

.page-lead {
  max-width: 720px;
  margin-top: 14px;
  color: var(--c-gray);
  font-size: 18px;
}

.breadcrumbs {
  padding: 14px 0;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--c-mid);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--c-gray);
  font-size: 13px;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--c-mid);
}

.breadcrumb-link {
  color: var(--c-gray);
}

.breadcrumb-link:hover {
  color: var(--c-orange);
}

.breadcrumb-current {
  color: var(--c-black);
  font-weight: 700;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--c-black);
  background: var(--c-light);
  transition: background var(--transition), border-color var(--transition);
}

.card:hover {
  background: var(--c-white);
  border-color: var(--c-orange);
}

.card-outline {
  background: var(--c-white);
  border-color: var(--c-mid);
}

.card-filled {
  background: var(--c-black);
  border-color: var(--c-black);
  color: #fff;
}

.card-filled:hover {
  background: var(--c-black);
  border-color: var(--c-orange);
}

.card-filled .card-title {
  color: #fff;
}

.card-filled .card-text {
  color: #bfbfbf;
}

.card-title {
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
}

.card-text {
  color: var(--c-gray);
  font-size: 15px;
}

.card-meta {
  display: block;
  margin-top: auto;
  padding-top: 18px;
  color: var(--c-mid);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.card-nav .arrow-link {
  margin-top: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--c-black);
  background: var(--c-white);
  color: var(--c-black);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.1;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.btn:hover {
  background: var(--c-black);
  color: #fff;
}

.btn-primary {
  background: var(--c-orange);
  border-color: var(--c-orange);
  color: #fff;
}

.btn-primary:hover {
  background: #c94f1f;
  border-color: #c94f1f;
  color: #fff;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid transparent;
  color: var(--c-orange);
  font-size: 14px;
  font-weight: 700;
  transition: border-color var(--transition);
}

.arrow-link:hover {
  border-bottom-color: var(--c-orange);
  color: var(--c-orange);
}

.arrow-link .arrow {
  transition: transform var(--transition);
}

.arrow-link:hover .arrow {
  transform: translateX(4px);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--c-mid);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.tag-blue {
  border-color: var(--c-blue);
  color: var(--c-blue);
  background: rgba(27, 107, 143, 0.06);
}

.tag-green {
  border-color: var(--c-green);
  color: var(--c-green);
  background: rgba(74, 124, 63, 0.06);
}

.tag-orange {
  border-color: var(--c-orange);
  color: var(--c-orange);
  background: rgba(232, 93, 42, 0.06);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--c-mid);
}

.status-live .status-dot {
  background: var(--c-green);
}

.status-upcoming .status-dot {
  background: var(--c-blue);
}

.status-off .status-dot {
  background: var(--c-gray);
}

.timeline {
  position: relative;
  margin: 8px 0 8px 7px;
  padding-left: 24px;
  border-left: 1px solid var(--c-black);
}

.timeline-item {
  position: relative;
  padding-bottom: 28px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 6px;
  left: -29px;
  width: 9px;
  height: 9px;
  background: var(--c-black);
}

.timeline-time {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-blue);
}

.timeline-title {
  display: block;
  margin-top: 4px;
  font-size: 16px;
  font-weight: 700;
}

.timeline-text {
  margin-top: 4px;
  color: var(--c-gray);
  font-size: 14px;
}

.data-panel {
  border: 1px solid var(--c-black);
  background: var(--c-white);
}

.data-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: var(--c-black);
  color: #fff;
}

.data-panel-title {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.data-panel-body {
  display: grid;
  gap: 12px;
  padding: 16px;
}

.data-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--c-light);
  font-size: 14px;
}

.data-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.data-label {
  color: var(--c-gray);
}

.data-value {
  font-weight: 700;
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--c-mid);
  background: var(--c-light);
}

.media-frame:empty::before {
  content: "图片容器";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gray);
  font-size: 12px;
  letter-spacing: 0.1em;
}

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

.media-16-9 {
  aspect-ratio: 16 / 9;
}

.media-4-3 {
  aspect-ratio: 4 / 3;
}

.media-1-1 {
  aspect-ratio: 1 / 1;
}

.media-caption {
  margin-top: 8px;
  color: var(--c-gray);
  font-size: 12px;
}

.feature-list {
  display: grid;
  gap: 16px;
}

.feature-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--c-mid);
  background: var(--c-white);
}

.feature-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--c-black);
  color: #fff;
  font-family: var(--font-display);
  font-size: 14px;
}

.feature-title {
  font-weight: 700;
}

.feature-text {
  margin-top: 4px;
  color: var(--c-gray);
  font-size: 14px;
}

.divider {
  height: 1px;
  margin: 32px 0;
  background: var(--c-mid);
}

.text-orange {
  color: var(--c-orange);
}

.text-blue {
  color: var(--c-blue);
}

.text-green {
  color: var(--c-green);
}

.text-muted {
  color: var(--c-gray);
}

@media (max-width: 1100px) {
  .nav-link {
    padding: 0 13px;
    font-size: 13px;
  }

  .search-link {
    padding: 0 12px;
  }

  .search-text {
    display: none;
  }

  .brand-text small {
    display: none;
  }
}

@media (max-width: 980px) {
  .header-inner {
    flex-wrap: wrap;
    min-height: 60px;
  }

  .site-header .brand {
    border-right: 0;
  }

  .header-actions {
    display: none;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 52px;
    height: 52px;
    margin-left: auto;
    border-left: 1px solid var(--c-mid);
  }

  .nav-toggle-bar {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--c-black);
    transition: transform var(--transition), opacity var(--transition);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-nav {
    display: none;
    order: 5;
    flex-basis: 100%;
    margin-left: 0;
    border-top: 1px solid var(--c-black);
    background: var(--c-white);
  }

  .site-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-link {
    justify-content: flex-start;
    padding: 14px var(--gutter);
    border-left: 0;
    border-bottom: 1px solid var(--c-mid);
  }

  .nav-link[aria-current="page"] {
    border-bottom-color: var(--c-orange);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand-col {
    grid-column: span 2;
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-span-3 {
    grid-column: span 2;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 56px 0;
  }

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

  .footer-brand-col {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .grid-span-2,
  .grid-span-3 {
    grid-column: span 1;
  }

  .split {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

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

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

  .scroll-progress {
    display: none;
  }
}