:root { --navy: #1B2A4A; --amber: #F59E0B; --ink: #1f2937; --muted: #6b7280; --bg: #f8fafc; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--ink); background: var(--bg); }
header { background: var(--navy); color: #fff; padding: 14px 16px; font-size: 18px; }
header strong { color: var(--amber); }
main { max-width: 480px; margin: 0 auto; padding: 16px; }
h1 { font-size: 20px; margin: 8px 0 16px; }
.banner:empty { display: none; }
.banner { background: #fff7e6; border-left: 4px solid var(--amber); padding: 10px 12px; margin: 0 0 12px; }
.plans { display: grid; gap: 10px; }
.plan { display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; text-align: left; padding: 14px; border: 1px solid #d1d5db; border-radius: 10px; background: #fff; font: inherit; color: inherit; }
.plan strong { grid-row: span 2; font-size: 20px; color: var(--navy); align-self: center; }
.plan em { color: var(--muted); font-style: normal; font-size: 14px; }
form { display: grid; gap: 8px; margin: 0 0 18px; }
label { font-size: 14px; color: var(--muted); }
input { font: inherit; padding: 12px; border: 1px solid #d1d5db; border-radius: 8px; width: 100%; }
button { font: inherit; padding: 12px 16px; border: 0; border-radius: 8px; background: var(--navy); color: #fff; }
button.secondary { background: #e5e7eb; color: var(--ink); }
button.link { background: none; color: var(--navy); padding: 0; text-decoration: underline; }
button:disabled { opacity: .6; }
.msg { color: #b91c1c; min-height: 1.4em; }
.spinner { width: 36px; height: 36px; border: 4px solid #e5e7eb; border-top-color: var(--amber); border-radius: 50%; animation: spin 1s linear infinite; margin: 16px 0; }
@keyframes spin { to { transform: rotate(360deg); } }