:root{--fg: #1f2937;--muted: #6b7280;--bg: #ffffff;--brand: #0b6e4f;--brand-dark: #064e36;--border: #e5e7eb}*{box-sizing:border-box}html,body,#app{min-height:100%;margin:0}body{font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--fg);background:var(--bg)}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.btn{display:inline-block;padding:.6rem 1.2rem;border-radius:6px;background:var(--brand);color:#fff;border:none;cursor:pointer;font-size:1rem}.btn:hover{background:var(--brand-dark)}.btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--brand)}.btn-ghost:hover{background:var(--brand);color:#fff}