:root {
  color-scheme: light;
  --bg: #f7fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #0f766e;
  --primary-ink: #ffffff;
  --border: #e2e8f0;
  --ring: rgba(15, 118, 110, 0.35);
  --shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
  --radius: 14px;
  --maxw: 1100px;
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica,
    Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.6;
  color: var(--text);
  background: radial-gradient(900px 500px at 15% 0%, #e6f7f5 0%, transparent 55%),
    radial-gradient(800px 500px at 85% 15%, #e8f0ff 0%, transparent 60%),
    var(--bg);
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--primary);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration: none;
}

:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  padding: var(--s-3) var(--s-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius) 0;
  transform: translateY(-120%);
  z-index: 9999;
}

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

.container {
  width: min(100% - 2rem, var(--maxw));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-3) 0;
}

.logo {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo small {
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-2) var(--s-3);
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle .icon {
  width: 18px;
  height: 18px;
}

.site-nav {
  display: block;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

@media (max-width: 899px) {
  body[data-js="true"] .nav-toggle {
    display: inline-flex;
  }

  body[data-js="true"] .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  body[data-js="true"][data-nav-open="true"] .site-nav {
    display: block;
  }
}

.nav-inner {
  display: grid;
  gap: var(--s-2);
  padding: var(--s-3) 0 var(--s-4);
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--s-2);
}

.nav-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-2) var(--s-3);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
}

.nav-list a[aria-current="page"] {
  background: #e6f7f5;
  border: 1px solid #c3f1ea;
}

.nav-meta {
  display: flex;
  gap: var(--s-2);
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--s-3);
}

.lang-switch a {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-2) var(--s-3);
  border: 1px solid var(--border);
  border-radius: 999px;
  text-decoration: none;
  color: var(--text);
  background: var(--surface);
}

.lang-switch a:hover {
  border-color: #b9c6d6;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  background: #eef2ff;
  color: #3730a3;
  font-size: 0.85rem;
  font-weight: 600;
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }
  .site-nav {
    display: block;
    position: static;
    background: transparent;
    border: 0;
    box-shadow: none;
  }
  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--s-3);
    padding: 0;
  }
  .nav-meta {
    padding: 0;
  }
  .nav-list {
    display: flex;
    gap: var(--s-1);
  }
  .nav-list a {
    padding: var(--s-2) var(--s-3);
  }
}

main {
  padding: var(--s-6) 0;
}

.hero {
  border: 1px solid var(--border);
  background: linear-gradient(135deg, #ffffff 0%, #f0fdfa 60%, #eef2ff 100%);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: var(--s-6);
}

.hero h1 {
  margin: 0 0 var(--s-3);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.lede {
  margin: 0 0 var(--s-5);
  color: var(--muted);
  max-width: 70ch;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 0.75rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  font-weight: 650;
  min-height: 44px;
}

.btn--primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-ink);
}

.btn--ghost {
  background: transparent;
}

.btn .icon {
  width: 18px;
  height: 18px;
}

.section {
  margin-top: var(--s-7);
}

.section h2 {
  margin: 0 0 var(--s-3);
  letter-spacing: -0.02em;
}

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

.grid {
  display: grid;
  gap: var(--s-4);
}

@media (min-width: 740px) {
  .grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  padding: var(--s-5);
}

.card h3 {
  margin: 0 0 var(--s-2);
  letter-spacing: -0.02em;
}

.card p {
  margin: 0 0 var(--s-4);
  color: var(--muted);
}

.card a {
  font-weight: 650;
}

.breadcrumbs {
  margin: 0 0 var(--s-4);
  color: var(--muted);
  font-size: 0.95rem;
}

.breadcrumbs a {
  color: inherit;
}

.prose h2 {
  margin-top: var(--s-6);
}

.prose ul {
  padding-left: 1.25rem;
}

.callout {
  border: 1px solid #c7f6ef;
  background: #f0fdfa;
  border-radius: var(--radius);
  padding: var(--s-5);
}

.callout strong {
  color: #0f172a;
}

.faq-list {
  display: grid;
  gap: var(--s-3);
}

.faq-list details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: var(--s-3) var(--s-4);
}

.faq-list summary {
  cursor: pointer;
  font-weight: 650;
}

form {
  display: grid;
  gap: var(--s-4);
}

.form-grid {
  display: grid;
  gap: var(--s-4);
}

@media (min-width: 740px) {
  .form-grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

label {
  display: block;
  font-weight: 650;
  margin-bottom: var(--s-2);
}

input,
select,
textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.hint {
  margin-top: var(--s-2);
  color: var(--muted);
  font-size: 0.95rem;
}

.form-alert {
  border: 1px solid #fecaca;
  background: #fff1f2;
  color: #9f1239;
  padding: var(--s-3) var(--s-4);
  border-radius: var(--radius);
}

.form-alert[hidden] {
  display: none;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--s-6) 0;
  background: rgba(255, 255, 255, 0.65);
}

.footer-grid {
  display: grid;
  gap: var(--s-5);
}

@media (min-width: 900px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
    align-items: start;
  }
}

.footer-title {
  margin: 0 0 var(--s-2);
  font-weight: 750;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--s-2);
}

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

.footer-links a:hover {
  color: var(--text);
}

.fineprint {
  margin-top: var(--s-5);
  color: var(--muted);
  font-size: 0.92rem;
}

.pre-wrap {
  white-space: pre-wrap;
  margin: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

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