:root {
  --bg: #faf7f2; --fg: #1f1a17; --accent: #c2410c; --muted: #6b625a; --card: #ffffff; --line: #d9d0c5; --on-accent: #ffffff;
  --radius: 10px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #17130f; --fg: #f3ece4; --accent: #fb923c; --muted: #b3a89c; --card: #231d18; --line: #3d342c; --on-accent: #17130f; }
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; color: var(--fg); background: var(--bg); line-height: 1.55; }
h1, h2, h3, .brand { font-family: ui-rounded, "Avenir Next", "Segoe UI", system-ui, sans-serif; line-height: 1.2; }
.top, main, footer { max-width: 44rem; margin: 0 auto; padding-left: 1rem; padding-right: 1rem; }
.top { display: flex; align-items: center; justify-content: space-between; padding-top: 1rem; padding-bottom: 1rem; }
.brand { font-weight: 800; font-size: 1.4rem; color: var(--accent); }
.hero { padding: 2.5rem 0 1.5rem; }
h1 { font-size: clamp(1.9rem, 6vw, 2.8rem); margin: 0 0 1rem; }
h2 { font-size: 1.5rem; margin: 2rem 0 1rem; }
h3 { font-size: 1.1rem; margin: 0 0 0.4rem; }
.lead { font-size: 1.15rem; color: var(--muted); }
.btn { display: inline-flex; align-items: center; min-height: 44px; padding: 0.6rem 1.3rem; background: var(--accent); color: var(--on-accent); border-radius: var(--radius); text-decoration: none; font-weight: 700; border: 0; font: inherit; font-weight: 700; cursor: pointer; }
.btn.small { padding: 0.4rem 1rem; }
.blocks { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }
.blocks li, .signup form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem; }
.blocks p { margin: 0; }
.signup form { display: grid; gap: 0.5rem; }
label { font-weight: 600; }
input { font: inherit; color: inherit; background: var(--bg); min-height: 44px; padding: 0.5rem 0.7rem; border: 1px solid var(--muted); border-radius: 6px; width: 100%; }
button { font: inherit; font-weight: 700; min-height: 44px; padding: 0.5rem 1.1rem; border: 0; border-radius: 6px; background: var(--accent); color: var(--on-accent); cursor: pointer; }
.note { font-size: 0.9rem; color: var(--muted); margin: 0.5rem 0 0; }
a { color: var(--accent); }
a.btn { color: var(--on-accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
footer { padding-top: 2rem; padding-bottom: 2rem; color: var(--muted); font-size: 0.9rem; }