:root {
  color-scheme: light dark;
  --accent: #e8500c;
  --accent-hover: #c94409;
  --accent-soft: rgba(232, 80, 12, 0.1);
  --bg: #ffffff;
  --bg-subtle: #f5f5f7;
  --text: #1d1d1f;
  --text-secondary: #5e5e63;
  --text-tertiary: #86868b;
  --border: #e3e3e6;
  --radius: 14px;
  --max: 720px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #ff7a1f;
    --accent-hover: #ff9147;
    --accent-soft: rgba(255, 122, 31, 0.14);
    --bg: #161617;
    --bg-subtle: #1f1f21;
    --text: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-tertiary: #6e6e73;
    --border: #2c2c2e;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand:hover {
  text-decoration: none;
}

.brand img {
  width: 28px;
  height: 28px;
}

.site-nav {
  display: flex;
  gap: 20px;
  font-size: 15px;
}

.site-nav a {
  color: var(--text-secondary);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: none;
}

/* Hero */

.hero {
  padding: 72px 0 56px;
  text-align: center;
}

.hero-icon {
  width: 128px;
  height: 128px;
  margin: 0 auto 24px;
  display: block;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(36px, 7vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.hero .tagline {
  margin: 0 auto 32px;
  max-width: 520px;
  font-size: 20px;
  color: var(--text-secondary);
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 16px;
}

.button:hover {
  background: var(--accent-hover);
  text-decoration: none;
}

.hero .meta {
  margin: 14px 0 0;
  font-size: 14px;
  color: var(--text-tertiary);
}

/* Sections */

.section {
  padding: 56px 0;
  border-top: 1px solid var(--border);
}

.section h2 {
  margin: 0 0 8px;
  font-size: 28px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section .lead {
  margin: 0 0 32px;
  color: var(--text-secondary);
}

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

.card {
  padding: 20px;
  border-radius: var(--radius);
  background: var(--bg-subtle);
}

.card h3 {
  margin: 0 0 6px;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  font-size: 15px;
  color: var(--text-secondary);
}

.card .tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.flow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 15px;
}

.flow li {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-secondary);
}

.flow li span {
  color: var(--accent);
  font-weight: 600;
  margin-right: 6px;
}

/* FAQ */

.faq details {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.faq details:first-of-type {
  border-top: 1px solid var(--border);
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

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

.faq summary::after {
  content: "+";
  color: var(--text-tertiary);
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details p {
  margin: 10px 0 0;
  color: var(--text-secondary);
}

.contact-box {
  margin-top: 32px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--bg-subtle);
}

.contact-box p {
  margin: 0;
}

.contact-box p + p {
  margin-top: 6px;
  color: var(--text-secondary);
  font-size: 15px;
}

/* Legal pages */

.legal {
  padding: 56px 0 72px;
}

.legal h1 {
  margin: 0 0 8px;
  font-size: clamp(32px, 6vw, 40px);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.legal .updated {
  margin: 0 0 32px;
  color: var(--text-tertiary);
  font-size: 15px;
}

.legal .notice {
  margin: 0 0 32px;
  padding: 18px 20px;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--bg-subtle);
}

.legal .notice p {
  margin: 0;
}

.legal .notice p + p {
  margin-top: 8px;
}

.toc {
  margin: 0 0 40px;
  padding: 20px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
}

.toc strong {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.toc ol {
  margin: 0;
  padding-left: 22px;
  columns: 2;
  column-gap: 32px;
}

.toc li {
  break-inside: avoid;
}

.toc a {
  color: var(--text-secondary);
}

.toc a:hover {
  color: var(--accent);
}

.legal h2 {
  margin: 40px 0 12px;
  font-size: 21px;
  letter-spacing: -0.01em;
  line-height: 1.3;
  scroll-margin-top: 24px;
}

.legal h3 {
  margin: 24px 0 8px;
  font-size: 17px;
}

.legal p,
.legal li {
  color: var(--text);
}

.legal ul,
.legal ol {
  padding-left: 22px;
}

.legal li + li {
  margin-top: 6px;
}

.legal .caps {
  font-size: 15px;
  text-transform: none;
  letter-spacing: 0;
}

code {
  font-family: var(--mono);
  font-size: 0.88em;
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--bg-subtle);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 40px;
  font-size: 14px;
  color: var(--text-tertiary);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

.site-footer nav {
  display: flex;
  gap: 18px;
}

.site-footer a {
  color: var(--text-secondary);
}

/* 404 */

.not-found {
  padding: 120px 0;
  text-align: center;
}

.not-found h1 {
  margin: 0 0 8px;
  font-size: 40px;
  letter-spacing: -0.03em;
}

.not-found p {
  margin: 0 0 28px;
  color: var(--text-secondary);
}

@media (max-width: 560px) {
  body {
    font-size: 16px;
  }

  .site-nav {
    gap: 14px;
    font-size: 14px;
  }

  .hero {
    padding: 48px 0 40px;
  }

  .hero-icon {
    width: 104px;
    height: 104px;
  }

  .hero .tagline {
    font-size: 18px;
  }

  .section {
    padding: 44px 0;
  }

  .toc ol {
    columns: 1;
  }

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