@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,600;9..144,700&family=Manrope:wght@400;500;600;700&display=swap");

:root {
  --bg: #ecf1eb;
  --bg-deep: #07141d;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-strong: rgba(255, 255, 255, 0.88);
  --surface-dark: rgba(7, 20, 29, 0.88);
  --card-border: rgba(10, 37, 43, 0.12);
  --card-border-strong: rgba(157, 203, 221, 0.26);
  --text: #102029;
  --muted: #50656b;
  --accent: #0e5a64;
  --accent-soft: #d4ebf4;
  --accent-warm: #d0873f;
  --accent-ice: #8ad6ef;
  --shadow: 0 30px 80px rgba(8, 22, 29, 0.12);
  --radius-lg: 32px;
  --radius-md: 22px;
  --radius-sm: 16px;
  --font-display: "Fraunces", "Iowan Old Style", "Palatino Linotype", serif;
  --font-body: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(138, 214, 239, 0.44), transparent 30%),
    radial-gradient(circle at top right, rgba(211, 228, 216, 0.9), transparent 34%),
    linear-gradient(180deg, #f8fbf9 0%, #e8eeea 46%, #e3ebe5 100%);
}

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

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 20px;
  top: -64px;
  z-index: 100;
  padding: 12px 16px;
  border-radius: 999px;
  background: var(--bg-deep);
  color: #eff8fb;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 20px;
}

.page-shell {
  width: min(1200px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 64px;
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 20;
  padding-bottom: 18px;
}

.header-pill {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 18px;
  border: 1px solid rgba(11, 34, 39, 0.1);
  border-radius: 999px;
  background: rgba(252, 255, 253, 0.82);
  box-shadow: 0 16px 60px rgba(10, 28, 33, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  min-width: 0;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand-subtitle {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.desktop-nav a,
.mobile-nav-panel a {
  text-decoration: none;
  color: var(--muted);
  border-radius: 999px;
  padding: 10px 14px;
  transition:
    color 0.2s ease,
    background-color 0.2s ease;
}

.desktop-nav a:hover,
.desktop-nav a:focus-visible,
.mobile-nav-panel a:hover,
.mobile-nav-panel a:focus-visible {
  color: var(--text);
  background: rgba(10, 46, 55, 0.08);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  text-decoration: none;
  font-weight: 700;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease;
}

.header-cta,
.button-primary {
  background: var(--bg-deep);
  color: #f1fbff;
  box-shadow: 0 14px 36px rgba(6, 20, 27, 0.2);
}

.header-cta:hover,
.header-cta:focus-visible,
.button-primary:hover,
.button-primary:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 18px 42px rgba(6, 20, 27, 0.26);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.6);
  color: var(--text);
  border: 1px solid rgba(11, 34, 39, 0.12);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.92);
}

.mobile-nav {
  display: none;
  margin-left: auto;
  position: relative;
}

.mobile-nav summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  font-weight: 700;
}

.mobile-nav summary::-webkit-details-marker {
  display: none;
}

.mobile-nav[open] summary {
  background: rgba(10, 46, 55, 0.1);
}

.mobile-nav-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 12px);
  width: min(280px, calc(100vw - 40px));
  display: grid;
  padding: 16px;
  border-radius: 24px;
  border: 1px solid rgba(11, 34, 39, 0.12);
  background: rgba(250, 254, 252, 0.96);
  box-shadow: var(--shadow);
}

.section {
  position: relative;
  border: 1px solid var(--card-border);
  border-radius: 40px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(255, 255, 255, 0.56));
  box-shadow: var(--shadow);
  margin-bottom: 22px;
  overflow: hidden;
}

.section::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(138, 214, 239, 0.7), transparent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  gap: 28px;
  padding: 44px;
  min-height: 620px;
}

.hero-copy,
.hero-visual {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: -0.04em;
}

h1 {
  font-size: clamp(3rem, 8vw, 5.9rem);
  line-height: 0.95;
  max-width: 11ch;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1;
  max-width: 14ch;
}

h3 {
  font-size: 1.6rem;
  line-height: 1.05;
}

p {
  margin: 0;
  line-height: 1.8;
  color: var(--muted);
}

.hero-dek {
  margin-top: 24px;
  max-width: 63ch;
  font-size: 1.08rem;
}

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

.hero-note {
  margin-top: 18px;
  max-width: 62ch;
  font-size: 0.96rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 34px 0 0;
}

.stat-card {
  padding: 18px 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(250, 253, 252, 0.82);
  border: 1px solid rgba(11, 34, 39, 0.08);
}

.stat-card dt {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

.stat-card dd {
  margin: 10px 0 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.hero-visual {
  gap: 18px;
}

.visual-card,
.quote-card,
.info-card,
.timeline-card,
.advice-card,
.note-panel,
.source-card {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
}

.visual-card {
  padding: 26px;
  background:
    radial-gradient(circle at top left, rgba(138, 214, 239, 0.22), transparent 40%),
    linear-gradient(160deg, rgba(7, 20, 29, 0.96), rgba(9, 38, 44, 0.96));
  color: #e7f7fb;
}

.visual-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.visual-title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: #f1fbff;
}

.visual-card .eyebrow,
.quote-label {
  color: rgba(194, 233, 247, 0.78);
}

.frost-bars {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: end;
  gap: 12px;
  height: 220px;
  margin: 28px 0 14px;
}

.frost-bars span {
  position: relative;
  min-height: 48px;
  height: var(--bar-height);
  border-radius: 999px 999px 20px 20px;
  background:
    linear-gradient(180deg, rgba(198, 244, 255, 0.95), rgba(109, 197, 223, 0.72) 55%, rgba(33, 105, 120, 0.28) 100%);
  box-shadow:
    inset 0 0 0 1px rgba(214, 245, 255, 0.16),
    0 0 24px rgba(117, 205, 227, 0.16);
}

.frost-bars span::after {
  content: "";
  position: absolute;
  inset: 10px 10px auto;
  height: 1px;
  background: rgba(255, 255, 255, 0.55);
}

.day-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(233, 250, 255, 0.74);
}

.visual-text {
  margin-top: 18px;
  color: rgba(231, 247, 251, 0.8);
}

.quote-card {
  padding: 22px 24px;
  background: rgba(255, 255, 255, 0.86);
}

.quote-label {
  display: block;
  margin-bottom: 12px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-heading {
  padding: 36px 36px 0;
}

.section-heading p + h2,
.section-heading .eyebrow + h2 {
  margin-top: 0;
}

.section-heading > p:last-child {
  margin-top: 18px;
  max-width: 68ch;
}

.info-grid,
.timeline-grid,
.advice-grid,
.sources-grid {
  padding: 30px 36px 36px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.info-card {
  padding: 26px;
  background: var(--surface-strong);
}

.info-card p {
  margin-top: 14px;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.timeline-card {
  padding: 22px 20px 24px;
  background: linear-gradient(180deg, rgba(250, 254, 252, 0.86), rgba(234, 241, 238, 0.76));
}

.timeline-date {
  margin-bottom: 14px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.timeline-card p:last-child {
  margin-top: 14px;
}

.advice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.advice-card {
  padding: 24px;
  background: rgba(255, 255, 255, 0.74);
}

.advice-card ul {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.advice-card li + li {
  margin-top: 12px;
}

.note-panel {
  margin: 0 36px 36px;
  padding: 24px 26px;
  background:
    linear-gradient(135deg, rgba(138, 214, 239, 0.22), rgba(255, 255, 255, 0.86)),
    rgba(255, 255, 255, 0.8);
}

.note-panel p {
  margin-top: 12px;
  max-width: 62ch;
}

.faq-list {
  display: grid;
  gap: 14px;
  padding: 30px 36px 36px;
}

.faq-item {
  overflow: hidden;
  background: rgba(255, 255, 255, 0.72);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 26px;
  font-weight: 700;
  color: var(--text);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item p {
  padding: 0 26px 24px;
  max-width: 72ch;
}

.faq-item[open] {
  border-color: var(--card-border-strong);
  background: rgba(255, 255, 255, 0.92);
}

.sources-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.source-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  text-decoration: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(239, 246, 243, 0.76));
}

.source-card strong {
  font-size: 1.05rem;
  color: var(--text);
}

.source-card span {
  line-height: 1.7;
  color: var(--muted);
}

.source-card:hover,
.source-card:focus-visible {
  border-color: rgba(14, 90, 100, 0.3);
}

.footer-cta {
  margin: 0 36px 36px;
  padding: 26px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(7, 20, 29, 0.96), rgba(12, 52, 59, 0.94));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-cta h3 {
  color: #eefcff;
  max-width: 18ch;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 8px 0;
  color: rgba(16, 32, 41, 0.68);
  font-size: 0.92rem;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent-warm);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .hero,
  .timeline-grid,
  .advice-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 920px) {
  .page-shell {
    width: min(100% - 20px, 1200px);
    padding-top: 18px;
  }

  .site-header {
    top: 10px;
  }

  .header-pill {
    gap: 12px;
  }

  .desktop-nav,
  .header-cta {
    display: none;
  }

  .mobile-nav {
    display: block;
  }

  .hero,
  .section-heading,
  .info-grid,
  .timeline-grid,
  .advice-grid,
  .faq-list,
  .sources-grid {
    padding-left: 22px;
    padding-right: 22px;
  }

  .hero {
    padding-top: 28px;
    padding-bottom: 28px;
  }

  .info-grid,
  .sources-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-cta,
  .note-panel {
    margin-left: 22px;
    margin-right: 22px;
  }

  .footer-cta,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .header-pill {
    border-radius: 28px;
    align-items: flex-start;
    padding: 14px;
  }

  .brand {
    gap: 10px;
  }

  .brand-title {
    font-size: 1.12rem;
  }

  .brand-subtitle {
    letter-spacing: 0.16em;
  }

  .section {
    border-radius: 28px;
  }

  .hero {
    min-height: 0;
  }

  h1 {
    max-width: 9ch;
  }

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

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

  .footer-cta {
    align-items: flex-start;
  }
}