:root {
  --bg: #f4f8fc;
  --bg-soft: #eef5ff;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --muted-soft: #64748b;
  --line: #dbe5f0;
  --brand: #2563eb;
  --brand-strong: #1d4ed8;
  --brand-soft: #dbeafe;
  --green: #16a34a;
  --green-soft: #dcfce7;
  --shadow-lg: 0 28px 70px rgba(15, 23, 42, 0.10);
  --shadow-md: 0 12px 30px rgba(15, 23, 42, 0.08);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 32%),
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.08), transparent 22%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 42%, #edf4fb 100%);
}

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

main a,
nav a,
footer a,
.card a {
  color: inherit;
}

main a {
  color: var(--brand-strong);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: rgba(248, 251, 255, 0.82);
  border-bottom: 1px solid rgba(219, 229, 240, 0.8);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 16px 0;
}

nav > div {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

nav a:hover {
  color: var(--text);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand::before {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), #38bdf8);
  box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.12);
}

.hero {
  padding: 72px 0 42px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
  margin: 0 0 18px;
  max-width: 11ch;
}

.hero p,
main p,
main li {
  font-size: 1.05rem;
}

.hero p {
  color: var(--muted);
  max-width: 60ch;
}

.hero-shell {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 36px;
  align-items: center;
  padding: 34px;
  background: linear-gradient(180deg, rgba(255,255,255,0.88), rgba(255,255,255,0.74));
  border: 1px solid rgba(219, 229, 240, 0.9);
  border-radius: 32px;
  box-shadow: var(--shadow-lg);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.kicker {
  display: inline-flex;
  align-self: flex-start;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero-actions,
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 8px;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 18px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.button {
  background: linear-gradient(135deg, var(--brand), #3b82f6);
  color: #ffffff;
  box-shadow: 0 16px 30px rgba(37, 99, 235, 0.28);
}

.button-secondary {
  background: rgba(255,255,255,0.86);
  color: var(--text);
  border: 1px solid var(--line);
}

.button:hover,
.button-secondary:hover {
  transform: translateY(-1px);
}

.hero-visual {
  position: relative;
}

.hero-art {
  width: 100%;
  border-radius: 28px;
  background: linear-gradient(180deg, #f8fbff, #edf4ff);
  border: 1px solid rgba(219,229,240,0.9);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 8px;
}

.stat {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--line);
}

.stat strong {
  display: block;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}

.stat span {
  display: block;
  color: var(--muted-soft);
  font-size: 0.92rem;
}

.section-title {
  margin-top: 54px;
  margin-bottom: 12px;
  font-size: clamp(1.7rem, 2.8vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.section-intro {
  color: var(--muted);
  max-width: 64ch;
  margin: 0 0 20px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin: 24px 0 44px;
}

.card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(255,255,255,0.86));
  border: 1px solid rgba(219, 229, 240, 0.95);
  border-radius: 22px;
  padding: 22px;
  box-shadow: var(--shadow-md);
}

.card::after {
  content: "";
  position: absolute;
  inset: auto auto 0 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--brand), #38bdf8);
  opacity: 0.8;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

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

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(56,189,248,0.18));
  margin-bottom: 16px;
}

.notice {
  background: linear-gradient(135deg, rgba(219,234,254,0.78), rgba(240,249,255,0.92));
  border: 1px solid #bfdbfe;
  border-radius: 18px;
  padding: 18px 20px;
  margin: 26px 0;
  color: #1e3a8a;
}

.feature-band,
.split-panel,
.cta-panel,
.page-banner {
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.82));
  border: 1px solid rgba(219,229,240,0.92);
  border-radius: 28px;
  box-shadow: var(--shadow-md);
}

.feature-band {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  align-items: center;
  padding: 28px;
  margin: 28px 0 18px;
}

.feature-band img,
.split-panel img {
  width: 100%;
  border-radius: 22px;
}

.split-panel {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 28px;
  align-items: center;
  padding: 28px;
  margin: 36px 0;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-strong);
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.metric-card {
  padding: 16px;
  border-radius: 18px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
}

.metric-card strong {
  display: block;
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.metric-card span {
  color: var(--muted-soft);
  font-size: 0.9rem;
}

.page-banner {
  padding: 28px;
  margin-top: 28px;
  margin-bottom: 22px;
}

.page-banner p:last-child,
.card p:last-child,
.notice p:last-child {
  margin-bottom: 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.tag {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: #f8fafc;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
}

.article-page {
  padding: 28px 0 8px;
}

.article-page .hero {
  padding-top: 56px;
  padding-bottom: 20px;
}

.article-page .hero h1,
.page-banner h1 {
  max-width: 16ch;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 34px;
  background: rgba(255,255,255,0.96);
  border: 1px solid rgba(219,229,240,0.95);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid #e2e8f0;
  text-align: left;
  vertical-align: top;
}

th {
  background: #f8fbff;
  font-weight: 700;
}

tr:last-child td {
  border-bottom: none;
}

ul.clean {
  padding-left: 20px;
}

footer {
  margin-top: 56px;
  padding: 24px 0 50px;
  color: var(--muted-soft);
  font-size: 0.95rem;
}

@media (max-width: 920px) {
  .hero-shell,
  .feature-band,
  .split-panel {
    grid-template-columns: 1fr;
  }

  .hero h1,
  .article-page .hero h1,
  .page-banner h1 {
    max-width: none;
  }

  .hero-stats,
  .metric-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 18px;
  }

  nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding-top: 48px;
  }

  .hero-shell,
  .feature-band,
  .split-panel,
  .page-banner {
    padding: 22px;
    border-radius: 24px;
  }

  .card {
    border-radius: 18px;
  }

  th,
  td {
    padding: 12px;
    font-size: 0.95rem;
  }
}