:root {
  --bg: #f4f1ea;
  --ink: #1c1915;
  --muted: #5c564c;
  --line: #ddd6c8;
  --card: #fffdf8;
  --accent: #0f6e56;
  --accent-ink: #f4f1ea;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}
a { color: inherit; }
button, .btn { font-family: "Segoe UI", sans-serif; }
h1, h2, h3 { font-weight: 500; letter-spacing: -0.03em; line-height: 1.15; }
h1 { font-size: clamp(2.4rem, 5vw, 4.4rem); margin: 0 0 16px; }
h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); margin: 0 0 28px; }
h3 { font-size: 1.25rem; margin: 0 0 8px; }
p { margin: 0; }

.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(720px, calc(100% - 40px)); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(244, 241, 234, 0.92);
  border-bottom: 1px solid transparent;
}
.site-header.is-stuck { border-bottom-color: var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 16px; }
.brand { font-family: "Segoe UI", sans-serif; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { font-family: "Segoe UI", sans-serif; font-size: 0.92rem; text-decoration: none; }
.nav-toggle { display: none; background: transparent; border: 1px solid var(--line); padding: 8px 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 999px;
  border: 0;
}
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }

.hero { padding: 72px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 48px; align-items: end; }
.eyebrow { font-family: "Segoe UI", sans-serif; letter-spacing: 0.14em; text-transform: uppercase; font-size: 0.78rem; color: var(--accent); margin-bottom: 12px; }
.lede { font-size: 1.15rem; color: var(--muted); max-width: 38rem; }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; }

.panel { background: var(--ink); color: var(--bg); padding: 28px; border-radius: 18px; }
.panel-kicker { font-family: "Segoe UI", sans-serif; font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; opacity: 0.7; }
.panel-figure { font-size: 2rem; margin: 8px 0 18px; }
.panel dl { margin: 0; display: grid; gap: 10px; }
.panel div { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid rgba(244, 241, 234, 0.15); padding-top: 10px; }
.panel dt { font-family: "Segoe UI", sans-serif; font-size: 0.85rem; opacity: 0.7; }
.panel dd { margin: 0; }

.section { padding: 72px 0; }
.section-alt { background: #ebe6dc; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 16px; margin-bottom: 8px; }
.section-head h2 { margin: 0; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.steps li { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.steps span { font-family: "Segoe UI", sans-serif; color: var(--accent); font-size: 0.8rem; letter-spacing: 0.08em; }
.steps p { color: var(--muted); margin-top: 8px; }

.filters { display: flex; gap: 8px; }
.chip { background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; cursor: pointer; }
.chip.is-on { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.gpu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 22px; }
.gpu-card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.gpu-card header { display: flex; justify-content: space-between; gap: 8px; align-items: start; }
.tag { font-family: "Segoe UI", sans-serif; font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.tag.off { color: #9a3b2f; }
.gpu-card p { color: var(--muted); font-size: 0.95rem; flex: 1; }
.price { font-family: "Segoe UI", sans-serif; font-size: 1.15rem; }

.note { margin-top: 18px; color: var(--muted); font-size: 0.92rem; }

.faq details { border-top: 1px solid var(--line); padding: 14px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-size: 1.1rem; }
.faq p { color: var(--muted); margin-top: 8px; }

.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; }
.footer-row { display: flex; justify-content: space-between; font-family: "Segoe UI", sans-serif; }

@media (max-width: 860px) {
  .hero-grid, .steps, .gpu-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 20px 20px;
  }
  .nav-links.is-open { display: flex; }
  .section-head { flex-direction: column; align-items: flex-start; }
}