:root { color-scheme: light dark; --text: #1d1d1f; --muted: #6e6e73; --line: #e5e5ea; --bg: #ffffff; --accent: #0b5cad; }
@media (prefers-color-scheme: dark) { :root { --text: #f5f5f7; --muted: #a1a1a6; --line: #2c2c2e; --bg: #0f0f11; --accent: #6aa9ff; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; }
header, main, footer { max-width: 44rem; margin: 0 auto; padding: 0 1.25rem; }
header { padding-top: 2.5rem; }
.mark { margin: 0; font-weight: 700; letter-spacing: 0.02em; }
.lead { padding: 10vh 0 1rem; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.6rem); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 1.25rem; }
h2 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); margin: 0 0 0.75rem; }
section { padding: 2rem 0; border-top: 1px solid var(--line); }
.lead { border-top: none; }
p { margin: 0 0 1rem; }
ul { margin: 0; padding-left: 1.2rem; }
li { margin: 0 0 0.6rem; }
.principles { list-style: none; padding: 0; }
.principles li { padding-left: 1rem; border-left: 3px solid var(--line); }
footer { padding: 3rem 1.25rem 2.5rem; color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--line); margin-top: 1rem; }
footer p { margin: 0 0 0.3rem; }