:root {
  --bg: #f6f4f0;
  --card: #ffffff;
  --ink: #1d1b19;
  --muted: #6d6862;
  --accent: #e2553b;
  --accent-ink: #ffffff;
  --line: #e6e1da;
  --bad: #b42318;
  color-scheme: light;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", system-ui, sans-serif;
  padding: 24px 16px 48px;
}
.card {
  max-width: 440px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px 22px;
}
h1 { font-size: 1.6rem; line-height: 1.3; margin: 0 0 12px; }
h2 { font-size: 1.1rem; margin: 32px 0 4px; }
.lead { margin: 0 0 16px; }
.notice { background: #fbf3e6; border-radius: 12px; padding: 12px 14px; font-size: .92rem; }
.fine { color: var(--muted); font-size: .88rem; margin: 6px 0; }
label { display: block; font-weight: 600; margin: 20px 0 6px; }
input {
  width: 100%; font-size: 1.1rem; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 12px; background: #fff;
}
button {
  width: 100%; margin-top: 12px; padding: 14px; font-size: 1rem; font-weight: 600;
  border: 0; border-radius: 12px; background: var(--accent); color: var(--accent-ink); cursor: pointer;
}
button:disabled { opacity: .5; }
button.link { background: none; color: var(--muted); font-weight: 400; text-decoration: underline; }
.msg { min-height: 1.4em; font-size: .95rem; }
.msg.bad { color: var(--bad); }
.label { color: var(--muted); margin: 0; }
.balance { font-size: 3rem; font-weight: 700; margin: 0 0 12px; letter-spacing: -0.02em; }
.call {
  display: block; text-align: center; padding: 16px; border-radius: 14px;
  background: var(--ink); color: #fff; font-weight: 700; text-decoration: none; font-size: 1.1rem;
}
.packages { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 10px; }
.package {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  background: #fff; color: var(--ink); border: 1.5px solid var(--line);
}
.package.on { border-color: var(--accent); }
.package b { font-size: 1.2rem; }
.package span { color: var(--muted); font-weight: 400; font-size: .9rem; }
#checkout { margin-top: 16px; }

.purchases { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.purchases li { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: center;
  border-bottom: 1px solid #e3e5ec; padding: 8px 0; font-variant-numeric: tabular-nums; }
.legal { margin-top: 16px; text-align: center; }
.legal a { color: inherit; }