:root {
  --bg: #edf2ea;
  --paper: #fffdfa;
  --ink: #171512;
  --muted: #62685f;
  --line: rgba(48, 64, 50, 0.12);
  --amber: #e8622a;
  --green: #203026;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #f4f7f1 0%, var(--bg) 100%);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", sans-serif;
}

a { color: inherit; text-decoration: none; }

.account-shell {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 72px;
}

.account-top {
  min-height: 48px;
  margin-bottom: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-block;
  color: var(--green);
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.075em;
}

.brand span,
.text-carbon {
  color: var(--amber);
}

.back-link {
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  color: #475045;
  background: rgba(255, 255, 250, 0.68);
  font-size: 14px;
  font-weight: 720;
}

.login-panel,
.dashboard {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 250, 0.78);
  box-shadow: 0 28px 80px rgba(48, 58, 45, 0.1);
}

.login-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 42px;
  align-items: center;
  padding: 48px;
}

.dashboard {
  padding: 42px;
}

.dashboard-head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 850;
}

h1 {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.12;
  letter-spacing: 0;
}

.lead {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.actions,
.subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(23, 21, 18, 0.12);
  font-size: 14px;
  font-weight: 760;
}

.button.primary {
  color: #fff;
  border-color: var(--ink);
  background: var(--ink);
}

.button.secondary,
.subnav a {
  background: rgba(255, 255, 250, 0.72);
}

.subnav a {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  color: #475045;
  font-size: 14px;
  font-weight: 700;
}

.qr-card {
  min-height: 280px;
  padding: 28px;
  border-radius: 16px;
  background:
    radial-gradient(circle at 78% 18%, rgba(232, 98, 42, 0.16), transparent 30%),
    linear-gradient(145deg, #203026, #101713);
  color: #fff7ed;
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
}

.qr-grid {
  width: 164px;
  height: 164px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 24px;
}

.qr-grid span {
  border-radius: 8px;
  background: rgba(255, 247, 237, 0.88);
}

.qr-grid span:nth-child(3n) { background: rgba(232, 98, 42, 0.9); }
.qr-grid span:nth-child(4n) { opacity: 0.36; }

.qr-card p {
  max-width: 240px;
  color: rgba(255, 247, 237, 0.72);
  line-height: 1.7;
}

.cards,
.credit-packs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.card {
  min-height: 144px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 250, 0.76);
}

.card span {
  color: var(--amber);
  font-size: 13px;
  font-weight: 850;
}

.card strong {
  display: block;
  margin-top: 14px;
  font-size: 28px;
  line-height: 1.1;
}

.card p,
.empty-state {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.featured {
  border-color: rgba(232, 98, 42, 0.32);
  box-shadow: 0 24px 64px rgba(232, 98, 42, 0.12);
}

.empty-state {
  margin-top: 32px;
  padding: 24px;
  border: 1px dashed var(--line);
  border-radius: 14px;
}

@media (max-width: 760px) {
  .login-panel,
  .dashboard-head,
  .cards,
  .credit-packs {
    grid-template-columns: 1fr;
  }

  .account-top {
    align-items: flex-start;
    flex-direction: column;
  }

  .login-panel,
  .dashboard {
    padding: 28px;
  }
}