:root {
  --c-blue: #0077B6;
  --c-deep: #023E8A;
  --c-coral: #FF6B6B;
  --c-lime: #39FF14;
  --c-aqua: #E0F7FA;
  --c-yellow: #FFD166;
  --c-ink: #2B2024;
  --c-paper: #F8F9FA;
  --c-white: #FFFFFF;

  --font-title: "站酷酷黑", "阿里巴巴普惠体", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-1: 0 2px 10px rgba(2, 62, 138, .08);
  --shadow-2: 0 10px 30px rgba(2, 62, 138, .16);
}

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

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

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-ink);
  background: var(--c-paper);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-title);
  line-height: 1.2;
  font-weight: 800;
}

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
}

a {
  color: var(--c-deep);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

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

::selection {
  background: var(--c-yellow);
  color: var(--c-ink);
}

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

#main-content {
  outline: none;
  scroll-margin-top: 88px;
}

#main-content:focus-visible {
  outline: 2px solid var(--c-lime);
  outline-offset: -2px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 1200;
  background: var(--c-coral);
  color: var(--c-white);
  font-weight: 800;
  padding: 10px 18px;
  border-radius: 0 0 12px 12px;
  text-decoration: none;
  box-shadow: var(--shadow-2);
  transition: top .2s ease;
}

.skip-link:focus {
  top: 0;
  color: var(--c-white);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, rgba(2, 62, 138, .78) 0%, rgba(2, 62, 138, 0) 100%);
  transition: background .3s ease, box-shadow .3s ease;
}

.site-header.is-scrolled {
  background: rgba(2, 62, 138, .94);
  box-shadow: 0 4px 18px rgba(2, 62, 138, .28);
}

body.has-solid-header .site-header {
  background: rgba(2, 62, 138, .94);
}

.site-header__inner {
  max-width: 1440px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px clamp(16px, 4vw, 56px);
}

.header-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  z-index: 3;
  pointer-events: none;
  background: var(--c-lime);
  box-shadow: 0 0 8px rgba(57, 255, 20, .6);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1;
  color: var(--c-white);
  text-decoration: none;
  white-space: nowrap;
}

.site-brand:hover {
  color: var(--c-white);
}

.site-brand__mark {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  background: var(--c-coral);
  color: var(--c-white);
  border-radius: 12px 12px 12px 2px;
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .04em;
  transform: skewX(-6deg);
  box-shadow: 0 4px 12px rgba(255, 107, 107, .4);
}

.site-brand__text {
  letter-spacing: .04em;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav__list a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  color: rgba(255, 255, 255, .92);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: .95rem;
  text-decoration: none;
  transition: background .2s ease, color .2s ease;
}

.site-nav__list a:hover {
  background: rgba(255, 255, 255, .14);
  color: var(--c-lime);
}

.site-nav__list a[aria-current="page"] {
  background: var(--c-white);
  color: var(--c-deep);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 1002;
  background: rgba(2, 62, 138, .35);
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 12px;
  transition: background .2s ease, border-color .2s ease;
}

.nav-toggle:hover {
  background: rgba(2, 62, 138, .65);
}

.nav-toggle__line {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--c-white);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}

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

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

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

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

@media (max-width: 920px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(84vw, 360px);
    height: 100vh;
    height: 100dvh;
    padding: 96px 28px 32px;
    overflow-y: auto;
    background: var(--c-deep);
    box-shadow: -16px 0 32px rgba(2, 62, 138, .3);
    border-radius: 24px 0 0 24px;
    transform: translateX(105%);
    transition: transform .3s cubic-bezier(.4, 0, .2, 1);
    z-index: 1001;
  }

  .site-nav[data-open] {
    transform: translateX(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .site-nav__list a {
    display: block;
    padding: 14px 18px;
    font-size: 1.05rem;
    border-radius: 12px;
  }

  .site-nav__list a[aria-current="page"] {
    background: rgba(255, 255, 255, .16);
    color: var(--c-lime);
  }

  body.nav-lock {
    overflow: hidden;
  }
}

.site-footer {
  background: var(--c-deep);
  color: rgba(255, 255, 255, .82);
  font-size: .95rem;
}

.site-footer__inner {
  max-width: 1280px;
  margin-inline: auto;
  padding: clamp(40px, 6vw, 72px) clamp(16px, 4vw, 44px) 20px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.6fr);
  gap: clamp(24px, 4vw, 56px);
}

.site-footer__brand {
  display: block;
}

.site-footer__brand .site-brand {
  margin-bottom: 16px;
}

.site-brand--footer {
  color: var(--c-white);
}

.site-brand--footer:hover {
  color: var(--c-white);
}

.site-footer__slogan {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--c-white);
  margin: 4px 0 8px;
}

.site-footer__trust {
  color: rgba(255, 255, 255, .62);
  max-width: 36ch;
  line-height: 1.7;
}

.site-footer__title {
  font-size: .8rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-yellow);
  margin-bottom: 14px;
}

.site-footer__links li + li {
  margin-top: 8px;
}

.site-footer__links a {
  color: rgba(255, 255, 255, .82);
  text-decoration: none;
}

.site-footer__links a:hover {
  color: var(--c-coral);
}

.site-footer__contact-line {
  margin-top: 6px;
  color: rgba(255, 255, 255, .8);
}

.site-footer__note {
  margin-top: 12px;
  color: rgba(255, 255, 255, .55);
  font-size: .85rem;
  line-height: 1.65;
  max-width: 42ch;
}

.site-footer__bottom {
  margin-top: clamp(32px, 5vw, 56px);
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, .15);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: center;
  font-size: .82rem;
  color: rgba(255, 255, 255, .55);
}

.site-footer__bottom a {
  color: rgba(255, 255, 255, .72);
  text-decoration: none;
}

.site-footer__bottom a:hover {
  color: var(--c-lime);
}

.container,
.container--wide,
.container--narrow {
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 44px);
}

.container {
  max-width: 1160px;
}

.container--wide {
  max-width: 1360px;
}

.container--narrow {
  max-width: 820px;
}

.page-section {
  padding-block: clamp(56px, 9vw, 108px);
}

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

.page-section--deep {
  background: var(--c-deep);
  color: rgba(255, 255, 255, .88);
}

.page-section--deep .lead {
  color: rgba(255, 255, 255, .75);
}

.page-section--slant {
  clip-path: polygon(0 24px, 100% 0, 100% calc(100% - 24px), 0 100%);
  padding-block: calc(clamp(56px, 9vw, 108px) + 24px);
}

.page-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.05;
  color: var(--c-deep);
  margin-bottom: 18px;
}

.page-section--deep .page-title {
  color: var(--c-white);
}

.page-subtitle {
  font-family: var(--font-title);
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  font-weight: 700;
  color: var(--c-blue);
  margin-bottom: 10px;
}

.lead {
  font-size: 1.05rem;
  color: rgba(43, 32, 36, .76);
  max-width: 68ch;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  font-size: .85rem;
  font-weight: 600;
  color: rgba(43, 32, 36, .6);
  margin-bottom: 24px;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--c-blue);
  opacity: .6;
}

.breadcrumbs a {
  color: var(--c-blue);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--c-coral);
}

.breadcrumbs [aria-current="page"] {
  color: var(--c-ink);
}

.section-head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.section-head__intro {
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-coral);
}

.section-head__title {
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  color: var(--c-deep);
}

.section-head__desc {
  color: rgba(43, 32, 36, .7);
  max-width: 640px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}

.card {
  background: var(--c-white);
  border: 1px solid rgba(2, 62, 138, .1);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 2.4vw, 32px);
  box-shadow: var(--shadow-1);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: rgba(255, 107, 107, .5);
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--c-deep);
}

.card__text {
  color: rgba(43, 32, 36, .75);
  font-size: .95rem;
  margin-bottom: 12px;
}

.card__link {
  color: var(--c-coral);
  font-weight: 800;
  text-decoration: none;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--c-white);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-1);
  border-left: 6px solid var(--c-coral);
}

.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1;
  color: var(--c-deep);
  letter-spacing: -.04em;
}

.stat__label {
  color: rgba(2, 62, 138, .7);
  font-size: .9rem;
  font-weight: 600;
}

.data-number {
  font-family: var(--font-mono);
  font-weight: 800;
  letter-spacing: -.04em;
  color: var(--c-deep);
  font-size: 1.25em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  border: 2px solid transparent;
  background: var(--c-coral);
  color: var(--c-white);
  font-family: var(--font-title);
  font-weight: 800;
  font-size: .95rem;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(255, 107, 107, .3);
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease, color .2s ease;
}

.btn:hover {
  background: var(--c-deep);
  color: var(--c-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.btn--ghost {
  background: transparent;
  border-color: currentColor;
  color: var(--c-deep);
  box-shadow: none;
}

.btn--ghost:hover {
  background: var(--c-deep);
  border-color: var(--c-deep);
  color: var(--c-white);
}

.btn--lime {
  background: var(--c-lime);
  color: var(--c-ink);
  box-shadow: 0 4px 16px rgba(57, 255, 20, .25);
}

.btn--lime:hover {
  background: var(--c-deep);
  color: var(--c-white);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--c-aqua);
  color: var(--c-deep);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .04em;
  white-space: nowrap;
}

.tag::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.tag--live {
  background: rgba(2, 62, 138, .9);
  color: var(--c-lime);
}

.tag--live::before {
  box-shadow: 0 0 8px var(--c-lime);
  animation: tagPulse 1.6s ease-in-out infinite;
}

@keyframes tagPulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: .35;
  }
}

.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: clamp(12px, 2vw, 24px);
  background: linear-gradient(135deg, var(--c-aqua), var(--c-blue));
}

.img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, .18), transparent 60%);
  pointer-events: none;
}

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

.ratio-16x9 {
  aspect-ratio: 16 / 9;
}

.ratio-4x3 {
  aspect-ratio: 4 / 3;
}

.ratio-1x1 {
  aspect-ratio: 1 / 1;
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tab-btn {
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--c-paper);
  border: 1px solid rgba(2, 62, 138, .15);
  color: var(--c-deep);
  font-weight: 800;
  font-size: .9rem;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.tab-btn:hover {
  border-color: var(--c-coral);
  color: var(--c-coral);
}

.tab-btn[aria-selected="true"] {
  background: var(--c-deep);
  border-color: var(--c-deep);
  color: var(--c-white);
}

.tab-panel {
  margin-top: 24px;
}

.tab-panel[hidden] {
  display: none;
}

.skew-cover {
  position: relative;
  background: var(--c-deep);
  color: var(--c-white);
  padding: clamp(28px, 4vw, 52px);
  border-radius: 22px;
  transform: skewY(-1deg);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.skew-cover > * {
  transform: skewY(1deg);
}

@media (max-width: 960px) {
  .site-footer__top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 620px) {
  .site-footer__top {
    grid-template-columns: 1fr;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}