:root {
  color-scheme: light;
  --bg: #f5f5f7;
  --card: rgba(255,255,255,.82);
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(0,0,0,.08);
  --blue: #0071e3;
  --red: #d70015;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #fff 0, var(--bg) 38%, #ececf0 100%);
  color: var(--text);
}
.shell { max-width: 1080px; margin: 0 auto; padding: 56px 24px; }
.hero { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; margin-bottom: 28px; }
.eyebrow { color: var(--blue); font-weight: 700; letter-spacing: .02em; margin: 0 0 10px; }
h1 { font-size: clamp(36px, 7vw, 72px); line-height: .96; letter-spacing: -.055em; margin: 0; max-width: 760px; }
h2 { margin: 0 0 14px; font-size: 22px; letter-spacing: -.02em; }
.sub { color: var(--muted); font-size: 20px; margin: 18px 0 0; }
@media (min-width: 1200px) {
  .shell { max-width: 1280px; padding: 72px 48px; }
  h1 { font-size: 64px; }
  .sub { font-size: 22px; }
  .card { padding: 36px; border-radius: 32px; }
  .login-card { max-width: 520px; margin: 0 auto; }
  .grid { grid-template-columns: 1fr 2fr; gap: 24px; margin-bottom: 24px; }
  .packages { grid-template-columns: repeat(4, 1fr); gap: 14px; }
  .balance { font-size: 72px; }
  table { font-size: 15px; }
  th, td { padding: 14px 12px; }
}
.card {
  background: var(--card);
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 24px 80px rgba(0,0,0,.08);
  backdrop-filter: blur(24px);
}
.login-card { max-width: 460px; }
.grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 18px; margin-bottom: 18px; }
label { display: block; color: var(--muted); font-size: 13px; margin: 18px 0 8px; }
input {
  width: 100%; border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px;
  background: rgba(255,255,255,.9); font-size: 16px; outline: none;
}
input:focus { border-color: rgba(0,113,227,.5); box-shadow: 0 0 0 4px rgba(0,113,227,.12); }
button {
  border: 0; border-radius: 999px; padding: 12px 18px; font-weight: 700; cursor: pointer;
  background: #e8e8ed; color: var(--text);
}
button.primary, .primary { background: var(--blue); color: white; }
button.ghost { background: rgba(255,255,255,.72); border: 1px solid var(--line); }
.full { width: 100%; margin-top: 20px; }
.code-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.msg { margin-top: 12px; color: var(--muted); font-size: 14px; }
.msg.err { color: var(--red); }
.balance { font-size: 58px; font-weight: 800; letter-spacing: -.05em; }
.balance small { font-size: 17px; color: var(--muted); margin-left: 6px; letter-spacing: 0; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.packages { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.package { padding: 16px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.6); }
.package b { display: block; font-size: 20px; margin-bottom: 4px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px 8px; text-align: left; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; }
.status-expired { color: var(--red); font-weight: 700; }
@media (max-width: 760px) {
  .shell { padding: 32px 14px; }
  .hero, .grid { display: block; }
  .hero { flex-direction: column; gap: 12px; }
  .card { padding: 22px; margin-bottom: 14px; border-radius: 22px; }
  .packages { grid-template-columns: repeat(2, 1fr); }
  h1 { font-size: 32px; }
  .sub { font-size: 16px; }
  .balance { font-size: 42px; }
  table { font-size: 12px; }
  th, td { padding: 8px 4px; }
  .login-card { max-width: 100%; }
}
.qr-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.5); display: flex; align-items: center; justify-content: center; z-index: 999;
}
.qr-box {
  background: #fff; border-radius: 20px; padding: 32px; text-align: center; max-width: 340px; width: 90%;
}
.qr-box img { width: 220px; height: 220px; margin: 16px 0; }
.qr-box .amount { font-size: 28px; font-weight: 800; margin-bottom: 8px; }
.qr-box .hint { color: var(--muted); font-size: 14px; margin-top: 12px; }