:root { color-scheme: dark; font-family: Inter, "Segoe UI", system-ui, sans-serif; background: #17141f; color: #f8f5fb; }
* { box-sizing: border-box; }
body { margin: 0; padding: 32px 20px 72px; background: radial-gradient(circle at 20% 0, rgba(155,108,255,.18), transparent 32rem), #17141f; }
main { width: min(760px, 100%); margin: 0 auto; padding: clamp(28px, 6vw, 58px); border: 1px solid rgba(220,206,238,.18); border-radius: 24px; background: rgba(36,30,45,.9); box-shadow: 0 24px 70px rgba(0,0,0,.25); }
.back, a { color: #cbb5ff; }
.back { display: inline-block; margin-bottom: 30px; text-decoration: none; font-weight: 700; }
h1 { margin: 0; font-size: clamp(2.4rem, 7vw, 4.2rem); letter-spacing: -.045em; }
h2 { margin: 38px 0 10px; font-size: 1.3rem; }
p { color: #d0c7d8; line-height: 1.7; }
.effective { color: #aaa0b4; }