:root {
  --bg: #0a0a0a;
  --surface: #121212;
  --text: #e8e8e8;
  --muted: #9a9a9a;
  --accent: #296ef9;
  --border: rgba(255, 255, 255, 0.08);
  --font: "Inter", system-ui, sans-serif;
  --mono: "Space Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1.25rem, 4vw, 3rem);
  background: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.brand {
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
  opacity: 0.9;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
}

.header-cta a {
  color: var(--muted);
}

.header-cta a.primary {
  color: #fff;
  background: var(--accent);
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  text-decoration: none;
}

article {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem clamp(1.25rem, 4vw, 2rem) 5rem;
}

.meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0 0 1rem;
}

.tldr {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 1.1rem 1.25rem;
  margin: 1.5rem 0 2rem;
  color: #d5d5d5;
}

.tldr strong {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.hero-img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin: 0 0 2rem;
  display: block;
}

h2 {
  font-size: 1.35rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin: 2.4rem 0 0.85rem;
}

h3 {
  font-size: 1.05rem;
  margin: 1.6rem 0 0.6rem;
}

p,
li {
  color: #cfcfcf;
}

ul,
ol {
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.45rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0 1.75rem;
  font-size: 0.95rem;
}

th,
td {
  border: 1px solid var(--border);
  padding: 0.75rem 0.85rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface);
  color: #fff;
  font-weight: 600;
}

.best-for {
  margin: 0.35rem 0;
  color: #bdbdbd;
  font-size: 0.92rem;
}

.limit {
  margin: 0;
  color: #8f8f8f;
  font-size: 0.88rem;
}

.cta-box {
  margin: 2.5rem 0;
  padding: 1.4rem 1.35rem;
  background: linear-gradient(180deg, #111827 0%, #0b0b0b 100%);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.cta-box h2,
.cta-box h3 {
  margin-top: 0;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

.faq details {
  border-top: 1px solid var(--border);
  padding: 0.9rem 0;
}

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

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: #fff;
}

.faq p {
  margin: 0.65rem 0 0.2rem;
}

.footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem) 3rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  margin-bottom: 0.85rem;
}