:root {
  color-scheme: light dark;
  --accent: #2f5ce0;
  --btn-hover: #2449b8;
  --bg: #ffffff;
  --surface: #f5f7fb;
  --text: #15181e;
  --muted: #596273;
  --border: #e1e5ed;
  --link: #2f5ce0;
  --link-hover: #2449b8;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1014;
    --surface: #161a22;
    --text: #e9ebf0;
    --muted: #a3aab8;
    --border: #272c37;
    --link: #9db3ff;
    --link-hover: #c3d0ff;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

.wrap {
  width: 100%;
  max-width: calc(65ch + 32px);
  margin-inline: auto;
  padding-inline: 16px;
}

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

a {
  color: var(--link);
  text-underline-offset: 2px;
}

a:hover {
  color: var(--link-hover);
}

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

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.015em;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 6vw, 2.75rem);
}

h2 {
  margin: 2.4rem 0 0.6rem;
  font-size: 1.35rem;
}

h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

p {
  margin: 0 0 1rem;
}

ul,
ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

strong {
  font-weight: 600;
}

code {
  padding: 0.05em 0.3em;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

hr {
  margin: 2rem 0;
  border: 0;
  border-top: 1px solid var(--border);
}

::selection {
  background: var(--accent);
  color: #ffffff;
}

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

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  padding-block: 16px;
}

.wordmark {
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.wordmark:hover {
  color: var(--link);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  font-size: 0.94rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--link);
  text-decoration: underline;
}

main {
  padding-block: 40px 56px;
}

.lead {
  font-size: 1.12rem;
  color: var(--muted);
}

.page-meta {
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.small {
  font-size: 0.9rem;
}

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

.btn {
  display: inline-block;
  padding: 0.7rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover {
  border-color: var(--btn-hover);
  background: var(--btn-hover);
  color: #ffffff;
}

.cta-note {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: 16px;
  margin: 1.2rem 0 0;
}

.card {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.97rem;
}

.link-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.link-list li {
  margin: 0;
  padding: 0.75rem 0;
  border-top: 1px solid var(--border);
}

.link-list li:last-child {
  border-bottom: 1px solid var(--border);
}

.faq-item {
  padding: 1.25rem 0;
  border-top: 1px solid var(--border);
}

.faq-item:last-child {
  border-bottom: 1px solid var(--border);
}

.faq-item h2 {
  margin: 0 0 0.5rem;
  font-size: 1.12rem;
}

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

.site-footer {
  padding-block: 24px 36px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-note {
  margin: 0 0 0.6rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin-bottom: 0.6rem;
}

.footer-nav a {
  color: var(--muted);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--link);
  text-decoration: underline;
}

.footer-legal {
  margin: 0;
}