:root {
  color-scheme: light;
  --ink: #17212b;
  --muted: #5d6874;
  --line: #dce2e8;
  --surface: #ffffff;
  --background: #f4f7f9;
  --coral: #d95d64;
  --coral-soft: #fff0f1;
  --teal: #167f7a;
  --teal-soft: #e9f6f4;
  --navy: #23435d;
  --focus: #0b67c2;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

a {
  color: var(--teal);
  text-underline-offset: 3px;
}

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

a:focus-visible {
  outline: 3px solid rgba(11, 103, 194, 0.35);
  outline-offset: 3px;
  border-radius: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(220, 226, 232, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.nav,
.page,
.site-footer {
  width: min(100% - 40px, 1040px);
  margin-inline: auto;
}

.nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.nav-links a[aria-current="page"] {
  color: var(--coral);
}

.page {
  padding-block: 72px 80px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px;
  align-items: center;
  gap: 56px;
  min-height: 330px;
  padding-bottom: 64px;
}

.hero-copy {
  max-width: 720px;
}

.hero-mark {
  width: 180px;
  height: 180px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 18px 48px rgba(35, 67, 93, 0.14);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(40px, 8vw, 68px);
  font-weight: 780;
}

h2 {
  margin-bottom: 18px;
  font-size: 28px;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.8;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.link-card {
  min-height: 190px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--coral);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  box-shadow: 0 12px 30px rgba(35, 67, 93, 0.06);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.link-card:nth-child(2) {
  border-top-color: var(--teal);
}

.link-card:hover {
  transform: translateY(-3px);
  border-color: #b9c5cf;
  color: var(--ink);
  box-shadow: 0 16px 38px rgba(35, 67, 93, 0.1);
}

.link-card p {
  margin: 0;
  color: var(--muted);
}

.link-card .arrow {
  margin-top: 24px;
  color: var(--coral);
  font-weight: 700;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  align-items: start;
  gap: 56px;
}

.article {
  min-width: 0;
}

.article section {
  padding-block: 34px;
  border-top: 1px solid var(--line);
}

.article section:first-child {
  padding-top: 0;
  border-top: 0;
}

.article p,
.article ul {
  margin-top: 0;
}

.article ul {
  padding-left: 1.25rem;
}

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

.side-panel {
  position: sticky;
  top: 96px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.side-panel h2 {
  font-size: 20px;
}

.side-panel p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}

.contact-link {
  display: block;
  overflow-wrap: anywhere;
  font-weight: 700;
}

.notice {
  margin: 0 0 32px;
  padding: 20px 22px;
  border-left: 4px solid var(--teal);
  border-radius: 0 8px 8px 0;
  background: var(--teal-soft);
}

.notice.warning {
  border-left-color: var(--coral);
  background: var(--coral-soft);
}

.faq {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.faq:last-child {
  border-bottom: 1px solid var(--line);
}

.faq p {
  margin-bottom: 0;
  color: var(--muted);
}

.language-jump {
  display: inline-flex;
  gap: 12px;
  margin-top: 24px;
  font-size: 14px;
}

.language-jump a {
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  text-decoration: none;
}

.language-divider {
  margin: 56px 0 0;
  padding-top: 56px;
  border-top: 3px solid var(--navy);
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-block: 28px 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: inherit;
}

@media (max-width: 760px) {
  .nav,
  .page,
  .site-footer {
    width: min(100% - 28px, 1040px);
  }

  .nav {
    min-height: 58px;
  }

  .nav-links {
    gap: 14px;
  }

  .nav-links a {
    font-size: 13px;
  }

  .page {
    padding-block: 48px 64px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) 92px;
    gap: 20px;
    min-height: 240px;
    padding-bottom: 48px;
  }

  .hero-mark {
    width: 92px;
    height: 92px;
  }

  h1 {
    font-size: 40px;
  }

  .lead {
    font-size: 17px;
  }

  .link-grid,
  .content-layout {
    grid-template-columns: 1fr;
  }

  .content-layout {
    gap: 36px;
  }

  .side-panel {
    position: static;
    grid-row: 1;
  }

  .site-footer {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 600px) {
  .brand span {
    display: none;
  }

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

  .hero-mark {
    grid-row: 1;
  }
}

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

  .link-card {
    transition: none;
  }
}