:root {
  --ink: #14201c;
  --ink-soft: #3a4a44;
  --paper: #f3efe6;
  --paper-2: #e7e0d2;
  --panel: rgba(247, 243, 234, 0.92);
  --line: rgba(20, 32, 28, 0.12);
  --accent: #1f5c4a;
  --accent-2: #c45c26;
  --danger: #9b2c2c;
  --ok: #1f5c4a;
  --shadow: 0 18px 50px rgba(20, 32, 28, 0.12);
  --radius: 18px;
  --font: "Noto Sans SC", "DM Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(31, 92, 74, 0.22), transparent 60%),
    radial-gradient(700px 420px at 100% 0%, rgba(196, 92, 38, 0.16), transparent 55%),
    linear-gradient(180deg, #efe8db 0%, #f6f2ea 45%, #e9e3d5 100%);
}

code {
  font-family: "DM Sans", ui-monospace, monospace;
  background: rgba(20, 32, 28, 0.06);
  padding: 0.1em 0.35em;
  border-radius: 6px;
  font-size: 0.92em;
}

.panel.gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}

/* author 的 display:grid 会盖过 UA [hidden]，必须 !important */
[hidden],
.is-hidden {
  display: none !important;
}

.gate-card {
  width: min(480px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 36px 32px;
  animation: rise 0.55s ease both;
}

.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}

.gate-card h1 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: -0.02em;
}

.lede {
  margin: 0 0 24px;
  color: var(--ink-soft);
  line-height: 1.65;
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 14px;
  font-weight: 500;
}

.field input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  background: #fffdf8;
  color: var(--ink);
}

.field input:focus {
  outline: 2px solid rgba(31, 92, 74, 0.35);
  border-color: var(--accent);
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}

.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn.primary {
  width: 100%;
  background: var(--accent);
  color: #f7f3ea;
}

.btn.primary:hover:not(:disabled) { background: #174a3c; }

.btn.ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: 8px 14px;
  font-size: 13px;
}

.btn.soft {
  background: rgba(31, 92, 74, 0.1);
  color: var(--accent);
  border-radius: 12px;
  padding: 10px 12px;
  width: 100%;
}

.btn.soft:hover:not(:disabled) { background: rgba(31, 92, 74, 0.16); }

.btn.tiny {
  padding: 4px 10px;
  font-size: 12px;
  border-radius: 999px;
  background: rgba(20, 32, 28, 0.06);
  color: var(--ink-soft);
}

.error { color: var(--danger); margin: 12px 0 0; font-size: 14px; }
.hint { margin: 18px 0 0; color: var(--ink-soft); font-size: 13px; line-height: 1.5; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 243, 234, 0.78);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--ink);
  color: #f3efe6;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-block strong {
  display: block;
  font-size: 1.05rem;
}

.muted { color: var(--ink-soft); font-size: 13px; }

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.countdown {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 14px;
  color: var(--accent-2);
  background: rgba(196, 92, 38, 0.1);
  border: 1px solid rgba(196, 92, 38, 0.2);
  padding: 8px 12px;
  border-radius: 999px;
}

.notice-strip {
  padding: 10px 28px;
  background: rgba(31, 92, 74, 0.08);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-soft);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.9fr);
  gap: 24px;
  padding: 28px;
  max-width: 1280px;
  margin: 0 auto;
}

.section-head h2 {
  margin: 0 0 6px;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0 0 18px;
  color: var(--ink-soft);
  line-height: 1.55;
  font-size: 14px;
}

.section-head.compact p { margin-bottom: 12px; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.product {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  display: grid;
  gap: 10px;
  animation: rise 0.45s ease both;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.product .tag {
  justify-self: start;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: rgba(31, 92, 74, 0.1);
  padding: 4px 8px;
  border-radius: 999px;
}

.product h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.35;
}

.product .note {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.45;
  min-height: 2.9em;
}

.price-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.list-price {
  font-size: 1.15rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.stock {
  font-size: 12px;
  color: var(--accent-2);
  font-weight: 600;
}

.stock.low { color: var(--danger); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 14px;
  box-shadow: 0 10px 30px rgba(20, 32, 28, 0.05);
}

.pool-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
  max-height: 240px;
  overflow: auto;
}

.pool-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(20, 32, 28, 0.03);
  border-radius: 12px;
  font-size: 13px;
}

.pool-list .empty {
  color: var(--ink-soft);
  justify-content: center;
  background: transparent;
  border: 1px dashed var(--line);
}

.bundle-price-box {
  border-top: 1px solid var(--line);
  padding-top: 12px;
  display: grid;
  gap: 8px;
}

.bundle-price-box .row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--ink-soft);
}

.bundle-price-box .row.emphasize {
  color: var(--ink);
  font-weight: 700;
  font-size: 1.05rem;
}

.fineprint {
  margin: 0;
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.45;
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0 0 14px;
}

.msg {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.5;
}

.msg.ok { color: var(--ok); }
.msg.bad { color: var(--danger); }

.receipt {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  background: rgba(20, 32, 28, 0.04);
  border-radius: 12px;
  padding: 14px;
  display: grid;
  gap: 10px;
  max-height: min(420px, 50vh);
  overflow: auto;
}

.receipt .r-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
}

.receipt .r-row .k {
  color: var(--ink-soft);
  flex-shrink: 0;
}

.receipt .r-row .v {
  text-align: right;
  font-weight: 500;
  word-break: break-word;
}

.receipt .r-items {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}

.receipt .r-items li {
  display: grid;
  gap: 2px;
}

.receipt .r-items .name {
  font-weight: 600;
  font-size: 13px;
}

.receipt .r-items .meta {
  font-size: 12px;
  color: var(--ink-soft);
}

.receipt .r-total {
  font-size: 1.05rem;
  font-weight: 700;
}

.receipt .r-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.receipt .r-tag {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(196, 92, 38, 0.12);
  color: var(--accent-2);
}

.receipt .r-note {
  margin: 0;
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.5;
}

.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

.metric {
  background: rgba(20, 32, 28, 0.04);
  border-radius: 12px;
  padding: 12px;
}

.metric .label {
  display: block;
  font-size: 11px;
  color: var(--ink-soft);
  margin-bottom: 4px;
}

.metric .value {
  font-size: 1.2rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.warning-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-soft);
  padding: 12px;
  border-radius: 12px;
  background: rgba(196, 92, 38, 0.08);
  border: 1px solid rgba(196, 92, 38, 0.18);
}

.page-foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 16px 28px 32px;
  max-width: 1280px;
  margin: 0 auto;
  font-size: 13px;
}

#utm-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(20, 32, 28, 0.06);
  font-weight: 500;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    padding: 18px 14px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px;
  }

  .notice-strip { padding: 10px 14px; }
  .page-foot { padding: 12px 14px 28px; }
}