:root{color-scheme:light;--bg: #ffffff;--text: #0f172a;--muted: #475569;--border: #e2e8f0;--accent: #0f766e}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}.container{width:min(900px,92vw);margin:0 auto}header{border-bottom:1px solid var(--border);background:#f8fafc}.nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 0}.brand{font-weight:700;color:var(--text);text-decoration:none}.nav-links{display:flex;gap:1rem}.nav-links a{color:var(--accent);text-decoration:none}main{padding:2rem 0}section{padding:1rem 0;border-bottom:1px solid var(--border)}h1{margin:0 0 .5rem;font-size:2rem}h2{margin:0 0 .5rem;font-size:1.25rem}p,li{color:var(--muted)}ul{margin:.25rem 0 0;padding-left:1.2rem}.notice{background:#ecfeff;border:1px solid #99f6e4;border-radius:8px;padding:.9rem;color:#134e4a}footer{padding:1.25rem 0 2rem;color:var(--muted);font-size:.95rem}a{color:var(--accent)}