:root {
  color-scheme: light;
  --bg: #eef5ff;
  --bg-deep: #dfeeff;
  --panel: rgba(255, 255, 255, 0.9);
  --panel-strong: rgba(255, 255, 255, 0.97);
  --ink: #12345a;
  --ink-soft: #45688c;
  --accent: #2f7ddf;
  --accent-2: #19b6a2;
  --accent-3: #6b7cff;
  --line: rgba(18, 52, 90, 0.12);
  --line-strong: rgba(18, 52, 90, 0.22);
  --shadow: 0 28px 90px rgba(18, 52, 90, 0.14);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(90, 154, 255, 0.24), transparent 26%),
    radial-gradient(circle at top right, rgba(25, 182, 162, 0.13), transparent 24%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
}

a {
  color: var(--accent);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(248, 251, 255, 0.82);
  border-bottom: 1px solid rgba(18, 52, 90, 0.08);
}

.site-header-inner {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
  color: var(--ink);
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.brand-subtitle {
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
}

.site-nav a,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.site-nav a:hover,
.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent) 0%, #4ea2ff 100%);
  box-shadow: 0 14px 30px rgba(47, 125, 223, 0.24);
}

.button-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(47, 125, 223, 0.18);
}

.button-quiet {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.5);
  border-color: rgba(18, 52, 90, 0.08);
}

.hero {
  padding: 56px 0 28px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.95fr;
  gap: 28px;
  align-items: stretch;
}

.hero-panel,
.card,
.guide-panel,
.media-card,
.doc-card,
.tool-card,
.callout {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-panel {
  padding: clamp(28px, 4vw, 42px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(47, 125, 223, 0.08);
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero h1,
.page-title {
  margin: 18px 0 14px;
  font-size: clamp(2.4rem, 5vw, 4.3rem);
  line-height: 0.98;
}

.hero-copy,
.lede,
.card p,
.media-card p,
.doc-card p,
.tool-card p,
.callout p,
.bullet-list li,
.guide-intro {
  color: var(--ink-soft);
  line-height: 1.7;
  font-size: 1.03rem;
}

.hero-actions,
.callout-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-highlight {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-highlight h2,
.section-heading h2,
.callout h2,
.guide-panel h2 {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.15;
}

.stat-list,
.bullet-list {
  margin: 0;
  padding-left: 20px;
}

.stat-list li,
.bullet-list li {
  margin-top: 10px;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  padding: 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(18, 52, 90, 0.08);
}

.metric strong {
  display: block;
  font-size: 1.25rem;
}

.section {
  padding: 22px 0 10px;
}

.section-heading {
  margin-bottom: 18px;
}

.section-heading p {
  max-width: 780px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.three-up,
.two-up,
.docs-grid,
.media-grid,
.tool-grid {
  display: grid;
  gap: 18px;
}

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

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

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

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

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

.card,
.doc-card,
.media-card,
.tool-card,
.callout,
.guide-panel {
  padding: 22px;
}

.card h3,
.doc-card h3,
.media-card h3,
.tool-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  line-height: 1.24;
}

.card-tag {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(25, 182, 162, 0.09);
  color: #067d6d;
}

.figure-card {
  overflow: hidden;
  padding: 0;
}

.figure-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #dbe9ff;
}

.figure-copy {
  padding: 18px 20px 22px;
}

.figure-label {
  margin-bottom: 10px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--accent);
}

.doc-card a,
.media-card a,
.figure-copy a,
.tool-card a,
.footer-links a {
  font-weight: 700;
}

.doc-list-note {
  margin-top: 18px;
}

.callout {
  margin: 26px 0 8px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
  align-items: center;
  background:
    radial-gradient(circle at top right, rgba(25, 182, 162, 0.12), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(242, 248, 255, 0.95) 100%);
}

.footer {
  padding: 28px 0 56px;
  color: var(--ink-soft);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-top: 16px;
}

.guide-hero {
  padding: 44px 0 18px;
}

.guide-panel {
  padding: clamp(24px, 4vw, 38px);
}

.guide-panel .page-title {
  margin-top: 12px;
  font-size: clamp(2.2rem, 4.8vw, 3.7rem);
}

.tip-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.tip {
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(18, 52, 90, 0.08);
  background: rgba(255, 255, 255, 0.76);
}

.tip strong {
  display: block;
  margin-bottom: 6px;
}

.tool-card ul {
  margin: 0;
  padding-left: 18px;
}

.tool-card li {
  margin-top: 8px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.tool-card .tool-note {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(47, 125, 223, 0.06);
  color: var(--ink-soft);
  border: 1px solid rgba(47, 125, 223, 0.12);
}

.back-link {
  display: inline-flex;
  margin-bottom: 16px;
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 1040px) {
  .hero-grid,
  .callout,
  .three-up,
  .docs-grid,
  .media-grid,
  .metric-row,
  .tip-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .two-up,
  .tool-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
  }

  .site-header-inner,
  .site-nav,
  .hero-actions,
  .callout-actions,
  .footer-links {
    justify-content: flex-start;
  }

  .hero-grid,
  .callout,
  .three-up,
  .two-up,
  .docs-grid,
  .media-grid,
  .metric-row,
  .tip-grid,
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .page-shell,
  .site-header-inner {
    width: min(var(--max), calc(100% - 20px));
  }

  .hero,
  .guide-hero {
    padding-top: 28px;
  }
}