:root {
  --bg: #f5efe4;
  --card: rgba(255, 255, 255, 0.93);
  --ink: #2a2019;
  --muted: #6f584a;
  --line: rgba(112, 84, 63, 0.16);
  --accent: #bf6a2c;
  --accent-2: #e69a45;
  --accent-soft: rgba(191, 106, 44, 0.12);
  --danger: #b14337;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Be Vietnam Pro", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(230, 154, 69, 0.24), transparent 28%),
    linear-gradient(180deg, #fff9ef 0%, var(--bg) 100%);
}

.shell {
  width: min(980px, 100%);
  margin: 0 auto;
  padding: 18px 16px 28px;
  display: grid;
  gap: 14px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--card);
  box-shadow: 0 20px 48px rgba(120, 87, 45, 0.11);
}

.hero,
.panel {
  padding: 18px;
}

.eyebrow,
.section-label {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

h1,
h2,
p,
ol,
pre {
  margin: 0;
}

h1 {
  margin-top: 8px;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
}

.lead,
.muted,
.meta-text {
  color: var(--muted);
  line-height: 1.65;
}

.tabbar {
  padding: 8px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.tab-button,
.qty-button,
.primary-button,
.secondary-button,
.ghost-button,
.primary-link,
.links a {
  font: inherit;
  touch-action: manipulation;
}

.tab-button,
.qty-button,
.secondary-button,
.ghost-button {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: white;
  color: var(--ink);
  padding: 12px 10px;
  font-weight: 700;
}

.tab-button.is-active,
.qty-button.is-active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  border-color: transparent;
}

.tab-button:focus-visible,
.qty-button:focus-visible,
.primary-button:focus-visible,
.secondary-button:focus-visible,
.ghost-button:focus-visible,
.primary-link:focus-visible,
.links a:focus-visible,
.custom-wrap input:focus-visible {
  outline: 3px solid rgba(67, 125, 222, 0.26);
  outline-offset: 2px;
}

.view {
  display: grid;
  gap: 14px;
}

.wallet-panel,
.activity-grid,
.button-row,
.buy-head,
.account-panel {
  display: grid;
  gap: 12px;
}

.balance-value,
.price-value,
.summary-value {
  font-size: 1.85rem;
  font-weight: 800;
}

.primary-button,
.primary-link {
  border: 0;
  border-radius: 14px;
  padding: 13px 14px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  text-decoration: none;
  text-align: center;
}

.secondary-button {
  background: var(--accent-soft);
  border-color: transparent;
}

.mini-card,
.summary-box {
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.84);
  padding: 14px;
}

.mini-title {
  font-weight: 700;
  margin-bottom: 6px;
}

.step-list {
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.activity-grid {
  grid-template-columns: 1fr;
}

.quick-buy {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.custom-wrap {
  display: grid;
  gap: 6px;
}

.custom-wrap input {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  font: inherit;
}

.meta-pill {
  display: inline-flex;
  width: fit-content;
  padding: 8px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--ink);
  font-weight: 700;
}

.list-stack {
  display: grid;
  gap: 10px;
}

.file-link,
.links a {
  color: #1b63bf;
  font-weight: 700;
  text-decoration: none;
}

.links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.file-text {
  padding: 12px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  background: #fffdf9;
  white-space: pre-wrap;
}

#status-text.is-error {
  color: var(--danger);
}

@media (min-width: 760px) {
  .shell {
    padding: 26px 22px 34px;
  }

  .wallet-panel,
  .button-row,
  .buy-head,
  .account-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
  }

  .activity-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}