:root { --ink:#101828; --muted:#475467; --line:#D0D5DD; --blue:#2563EB; --bg:#F8FAFC; --warn:#FFFAEB; --warnline:#D97706; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 system-ui, "Segoe UI", Arial, sans-serif; color: var(--ink); background: var(--bg); }
.banner { background: #101828; color: #fff; padding: 8px 16px; font-size: 14px; }
.wrap { max-width: 720px; margin: 0 auto; padding: 16px; }
h1 { margin: 8px 0 0; }
.sub { color: var(--muted); margin-top: 4px; }
.menu, .lines { list-style: none; padding: 0; margin: 0; }
.menu li, .lines li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
button { font: inherit; min-height: 44px; padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line); background: #fff; cursor: pointer; }
button:focus-visible, select:focus-visible { outline: 3px solid #7C3AED; outline-offset: 2px; }
.cart { margin-top: 24px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.empty { color: var(--muted); }
.addr { display: block; margin: 12px 0; }
.addr select { display: block; margin-top: 4px; min-height: 44px; width: 100%; font: inherit; }
.summary { display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; margin: 12px 0; }
.summary dt { color: var(--muted); }
.summary dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.summary .total { font-weight: 700; color: var(--ink); }
.warn { background: var(--warn); border: 1px solid var(--warnline); border-radius: 10px; padding: 10px; margin: 8px 0; }
.pay { width: 100%; background: var(--blue); color: #fff; border-color: var(--blue); font-weight: 700; }
.pay:disabled { background: #98A2B3; border-color: #98A2B3; cursor: not-allowed; }
.result { min-height: 1.5em; }