:root {
  --bg: #07111f;
  --bg-soft: #0e1c31;
  --panel: rgba(10, 21, 37, 0.82);
  --panel-strong: #112544;
  --line: rgba(166, 214, 255, 0.16);
  --text: #eaf4ff;
  --muted: #9cb6d2;
  --primary: #19c37d;
  --primary-deep: #0ea867;
  --accent: #7ad7ff;
  --warm: #ffd166;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font: 16px/1.75 "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(122, 215, 255, 0.16), transparent 28%),
    radial-gradient(circle at right 10% top 12%, rgba(25, 195, 125, 0.15), transparent 20%),
    linear-gradient(180deg, #081220 0%, #050b14 100%);
  min-width: 320px;
}

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

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

a:hover {
  color: #b2ecff;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 99;
  background: #fff;
  color: #111;
  padding: 10px 14px;
  border-radius: 8px;
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: rgba(4, 10, 20, 0.72);
  border-bottom: 1px solid var(--line);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 84px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
}

.brand strong,
.brand em {
  display: block;
}

.brand em {
  font-style: normal;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #03101b;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), #9dffcf);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.35), 0 12px 26px rgba(25, 195, 125, 0.35);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
  transition: 0.25s ease;
}

.site-nav a:hover,
.site-nav a:focus,
.site-nav a[aria-current="page"] {
  background: rgba(122, 215, 255, 0.1);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
}

.hero-section {
  padding: 48px 0 28px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 26px;
  align-items: center;
}

.hero-copy,
.hero-visual,
.info-card,
.feature-panel,
.timeline article,
.faq-list details,
.article-card,
.panel-box,
.related-links,
.data-table-wrap,
.article-banner,
.notice-box,
.page-hero {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 38px;
}

.eyebrow,
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(122, 215, 255, 0.12);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.hero-copy h1,
.page-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(2rem, 4.5vw, 3.9rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero-lead,
.page-hero p,
.article-card p,
.feature-copy p,
.notice-box p,
.related-links p,
.timeline p,
.data-table td,
.data-table th,
.site-footer p,
.site-footer li,
.panel-box p {
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 28px 0 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #02140d;
  background: linear-gradient(135deg, #2ce290, #9df5c8);
  box-shadow: 0 16px 35px rgba(27, 204, 129, 0.28);
}

.btn-secondary {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255,255,255,0.03);
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}

.hero-points li {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.05);
}

.hero-visual {
  padding: 18px;
}

.hero-visual figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
}

.section-block {
  padding: 26px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 18px;
}

.section-head.left {
  text-align: left;
}

.section-head h2,
.article-card h2,
.related-links h2,
.panel-box h2,
.notice-box h2 {
  margin: 0;
  font-size: clamp(1.55rem, 2.6vw, 2.45rem);
  line-height: 1.18;
}

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

.info-card,
.article-card,
.related-links,
.panel-box,
.notice-box,
.page-hero {
  padding: 26px;
}

.info-card h3,
.timeline h3,
.related-links h3,
.panel-box h3,
.article-card h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.22rem;
}

.feature-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
}

.feature-panel {
  padding: 28px;
  align-self: start;
}

.feature-panel ol,
.article-card ol,
.article-card ul,
.related-links ul,
.panel-box ul {
  margin: 0;
  padding-left: 22px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.timeline article {
  padding: 24px;
}

.timeline span {
  display: inline-flex;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-weight: 800;
  color: #032417;
  background: linear-gradient(135deg, var(--warm), #fff0b5);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list details {
  padding: 18px 22px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
}

.page-hero {
  margin-top: 34px;
}

.breadcrumb {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 12px;
}

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

.article-banner {
  overflow: hidden;
  margin: 24px 0;
}

.article-banner img {
  width: 100%;
  height: auto;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 20px;
  align-items: start;
}

.article-card + .article-card {
  margin-top: 20px;
}

.data-table-wrap {
  overflow-x: auto;
  padding: 10px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.data-table th {
  color: var(--text);
  background: rgba(255,255,255,0.03);
}

.related-links ul {
  display: grid;
  gap: 10px;
}

.notice-box {
  border-color: rgba(255, 209, 102, 0.25);
  background: linear-gradient(180deg, rgba(255, 209, 102, 0.09), rgba(255,255,255,0.02));
}

.kpi-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.kpi {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}

.kpi strong {
  display: block;
  font-size: 1.6rem;
  color: var(--text);
}

.site-footer {
  margin-top: 40px;
  padding: 24px 0 36px;
  border-top: 1px solid var(--line);
  background: rgba(0,0,0,0.22);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.footer-grid h2 {
  font-size: 1.05rem;
}

.footer-grid ul {
  margin: 0;
  padding-left: 18px;
}

.footer-bottom {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

@media (max-width: 1024px) {
  .hero-grid,
  .feature-layout,
  .article-layout,
  .footer-grid,
  .timeline,
  .card-grid,
  .article-grid,
  .kpi-row {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 78px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border-radius: 22px;
    background: rgba(7, 16, 28, 0.96);
    border: 1px solid var(--line);
  }

  .site-nav.is-open {
    display: flex;
  }

  .hero-copy,
  .page-hero,
  .info-card,
  .article-card,
  .related-links,
  .panel-box,
  .notice-box,
  .feature-panel,
  .timeline article {
    padding: 22px;
  }

  .topbar {
    min-height: 76px;
  }
}