:root {
  --ink: #173e3a;
  --ink-soft: #526967;
  --teal: #087c72;
  --teal-dark: #05665e;
  --mint: #e2f4ef;
  --mint-soft: #f4f9f7;
  --white: #ffffff;
  --line: #dce9e5;
  --blue-soft: #eaf2ff;
  --blue-ink: #3d587b;
  --shadow: 0 22px 70px rgba(23, 62, 58, 0.1);
  --radius-lg: 32px;
  --radius-md: 22px;
  --radius-sm: 14px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 0%, rgba(79, 201, 181, 0.15), transparent 27rem),
    linear-gradient(180deg, #f8fcfa 0%, #ffffff 48%, #f6faf8 100%);
  font-family:
    Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  color: var(--white);
  background: var(--ink);
  border-radius: 10px;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(220, 233, 229, 0.75);
  background: rgba(248, 252, 250, 0.86);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(calc(100% - 40px), var(--max));
  min-height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(8, 124, 114, 0.2);
}

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

.nav-links a {
  padding: 9px 14px;
  color: var(--ink-soft);
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a[aria-current="page"] {
  color: var(--teal);
  background: var(--mint);
  outline: none;
}

.hero,
.document-hero {
  position: relative;
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  overflow: hidden;
}

.hero {
  min-height: 610px;
  padding: 104px 0 90px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: 72px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  padding: 7px 12px;
  color: var(--teal);
  background: var(--mint);
  border: 1px solid rgba(8, 124, 114, 0.11);
  border-radius: 999px;
  font-size: 0.73rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 8px;
  height: 8px;
  content: "";
  background: var(--teal);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(8, 124, 114, 0.1);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(2.75rem, 6vw, 5.35rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.hero h1 span {
  color: var(--teal);
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 34px;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 50px;
  padding: 0 21px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 800;
  text-decoration: none;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button-primary {
  color: var(--white);
  background: var(--teal);
  box-shadow: 0 12px 28px rgba(8, 124, 114, 0.22);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--teal-dark);
  box-shadow: 0 16px 32px rgba(8, 124, 114, 0.27);
}

.button-secondary {
  color: var(--teal);
  background: var(--white);
  border-color: var(--line);
}

.hero-panel {
  position: relative;
  min-height: 420px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 90% 5%, rgba(255, 255, 255, 0.95), transparent 13rem),
    linear-gradient(150deg, #dff6ef 0%, #effaf7 55%, #e7f1ff 100%);
  box-shadow: var(--shadow);
}

.water-mark {
  width: 88px;
  height: 88px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: linear-gradient(145deg, #0aa18f, #056d66);
  border-radius: 28px 28px 28px 8px;
  box-shadow: 0 18px 36px rgba(8, 124, 114, 0.25);
  transform: rotate(45deg);
}

.water-mark span {
  font-size: 2.2rem;
  font-weight: 900;
  transform: rotate(-45deg);
}

.hero-panel-label {
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.hero-panel h2 {
  max-width: 320px;
  margin: 12px 0 10px;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.hero-panel p {
  max-width: 320px;
  margin-bottom: 0;
  color: var(--ink-soft);
}

.link-grid {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto 110px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.link-card {
  min-height: 280px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 16px 45px rgba(23, 62, 58, 0.06);
  text-decoration: none;
  transition:
    border-color 170ms ease,
    transform 170ms ease,
    box-shadow 170ms ease;
}

.link-card:hover,
.link-card:focus-visible {
  border-color: rgba(8, 124, 114, 0.35);
  box-shadow: 0 24px 54px rgba(23, 62, 58, 0.11);
  transform: translateY(-5px);
  outline: none;
}

.card-icon,
.document-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: var(--teal);
  background: var(--mint);
  border-radius: 15px;
  font-size: 1.3rem;
  font-weight: 900;
}

.link-card h2 {
  margin: 28px 0 8px;
  font-size: 1.55rem;
  letter-spacing: -0.035em;
}

.link-card p {
  color: var(--ink-soft);
}

.card-link {
  margin-top: auto;
  color: var(--teal);
  font-weight: 800;
}

.document-hero {
  padding: 84px 0 48px;
}

.document-heading {
  max-width: 820px;
}

.document-heading h1 {
  margin-bottom: 20px;
  font-size: clamp(2.6rem, 6vw, 4.9rem);
}

.document-intro {
  max-width: 760px;
  color: var(--ink-soft);
  font-size: clamp(1.06rem, 2vw, 1.2rem);
}

.updated {
  margin-top: 28px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 700;
}

.updated::before {
  width: 8px;
  height: 8px;
  content: "";
  background: var(--teal);
  border-radius: 50%;
}

.document-layout {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto 110px;
  display: grid;
  grid-template-columns: 245px minmax(0, 1fr);
  align-items: start;
  gap: 54px;
}

.toc {
  position: sticky;
  top: 104px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.8);
}

.toc strong {
  display: block;
  margin-bottom: 12px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.toc a {
  padding: 7px 0;
  display: block;
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

.toc a:hover,
.toc a:focus-visible {
  color: var(--teal);
  outline: none;
}

.document {
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.document section + section {
  margin-top: 42px;
  padding-top: 42px;
  border-top: 1px solid var(--line);
}

.document h2 {
  margin-bottom: 10px;
  font-size: clamp(1.3rem, 3vw, 1.65rem);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.document p,
.document li {
  color: var(--ink-soft);
}

.document p:last-child {
  margin-bottom: 0;
}

.document ul,
.document ol {
  margin: 16px 0 0;
  padding-left: 1.25rem;
}

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

.notice {
  margin-top: 42px;
  padding: 22px;
  color: var(--blue-ink);
  background: var(--blue-soft);
  border-radius: var(--radius-md);
}

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

.faq-list {
  display: grid;
  gap: 13px;
}

.faq-list details {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
}

.faq-list details[open] {
  border-color: rgba(8, 124, 114, 0.3);
  box-shadow: 0 12px 28px rgba(23, 62, 58, 0.06);
}

.faq-list summary {
  padding: 20px 56px 20px 21px;
  position: relative;
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

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

.faq-list summary::after {
  position: absolute;
  top: 18px;
  right: 20px;
  width: 28px;
  height: 28px;
  content: "+";
  display: grid;
  place-items: center;
  color: var(--teal);
  background: var(--mint);
  border-radius: 50%;
  font-size: 1.2rem;
}

.faq-list details[open] summary::after {
  content: "–";
}

.faq-answer {
  padding: 0 21px 21px;
}

.faq-answer p:last-child,
.faq-answer ul:last-child,
.faq-answer ol:last-child {
  margin-bottom: 0;
}

.site-footer {
  padding: 46px 0;
  border-top: 1px solid var(--line);
  background: rgba(244, 249, 247, 0.8);
}

.footer-inner {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
}

.footer-copy {
  max-width: 600px;
}

.footer-copy p {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 750;
  text-decoration: none;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--teal);
  outline: none;
}

@media (max-width: 820px) {
  .hero {
    min-height: auto;
    padding: 76px 0;
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-panel {
    min-height: 350px;
  }

  .document-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .toc {
    position: static;
    display: none;
  }
}

@media (max-width: 640px) {
  .nav {
    width: min(calc(100% - 28px), var(--max));
    min-height: 68px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .nav-links {
    gap: 2px;
  }

  .nav-links a {
    padding: 8px 9px;
    font-size: 0.8rem;
  }

  .hero,
  .document-hero,
  .link-grid,
  .document-layout,
  .footer-inner {
    width: min(calc(100% - 28px), var(--max));
  }

  .hero {
    padding: 58px 0 64px;
  }

  h1 {
    font-size: clamp(2.6rem, 14vw, 4rem);
  }

  .hero-panel {
    min-height: 330px;
    padding: 25px;
    border-radius: 26px;
  }

  .link-grid {
    margin-bottom: 76px;
    grid-template-columns: 1fr;
  }

  .link-card {
    min-height: 245px;
    padding: 25px;
  }

  .document-hero {
    padding: 58px 0 34px;
  }

  .document-layout {
    margin-bottom: 76px;
  }

  .document {
    border-radius: 24px;
  }

  .footer-inner {
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}