:root {
  --paper: #f7f3ea;
  --card: #fdfbf6;
  --ink: #5b4a36;
  --muted: #9a8d7d;
  --line: #e9e1d6;
  --shadow: 0 18px 48px rgba(91, 74, 54, 0.12);
  --accent: #b98a59;
  --accent-weak: rgba(185, 138, 89, 0.18);
  --green: #4c9f70;
  --peek-clip: inset(42% 0 0 0 round 0 0 18px 18px);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 20px;
  background: radial-gradient(circle at 20% 18%, rgba(185, 138, 89, 0.08), transparent 28%),
    radial-gradient(circle at 86% 12%, rgba(76, 159, 112, 0.08), transparent 30%),
    linear-gradient(180deg, #faf7f0, #f5f1e7);
  font-family: "Inter", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 14px 16px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: flex-start;
}

button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 12px;
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: all 150ms ease;
  box-shadow: 0 6px 18px rgba(91, 74, 54, 0.08);
}

button.primary {
  background: linear-gradient(135deg, #cfa976, #b98957);
  border-color: #c49556;
  color: #fffdf8;
  box-shadow: 0 8px 22px rgba(185, 138, 89, 0.28);
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.hint {
  color: var(--muted);
  font-size: 13px;
  margin-top: 6px;
  line-height: 1.4;
}

.stack-wrapper {
  position: relative;
}

.stack-shell {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: height 280ms cubic-bezier(0.25, 0.9, 0.3, 1), box-shadow 180ms ease;
  min-height: 140px;
}

.stack-shell.empty {
  display: grid;
  place-items: center;
}

.stack-shell:not(.empty) .empty-hint {
  display: none;
}

.stack-inner {
  width: 100%;
}

.empty-hint {
  color: var(--muted);
  font-size: 14px;
  padding: 18px 0;
  text-align: center;
}

.row {
  background: transparent;
}

.block-row {
  padding: 16px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.48));
}

.block-row:last-child {
  border-bottom: none;
}

.row-main {
  display: grid;
  grid-template-columns: 22px 40px 1fr auto;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.arrow {
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  color: var(--muted);
  transition: transform 240ms ease;
  font-size: 18px;
}

.arrow.open {
  transform: rotate(90deg);
  color: var(--accent);
}

.row-icon {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: #f2ede4;
  display: grid;
  place-items: center;
  color: var(--accent);
  font-size: 18px;
  box-shadow: inset 0 0 0 1px rgba(91, 74, 54, 0.06);
}

.row-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.row-title {
  font-weight: 650;
  color: var(--ink);
}

.row-sub {
  font-size: 13px;
  color: var(--muted);
}

.pill {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--accent-weak);
  background: rgba(185, 138, 89, 0.12);
  color: var(--accent);
  white-space: nowrap;
}

.pill.green {
  border-color: rgba(76, 159, 112, 0.16);
  background: rgba(76, 159, 112, 0.12);
  color: var(--green);
}

.row-detail {
  padding-left: 64px;
  padding-right: 4px;
  color: var(--ink);
  line-height: 1.6;
  font-size: 14px;
}

.row-detail-inner {
  background: #fffdfa;
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 10px 12px;
}

.progress {
  height: 3px;
  border-radius: 999px;
  background: rgba(185, 138, 89, 0.16);
  overflow: hidden;
  position: relative;
  margin-left: 64px;
  margin-right: 10px;
}

.progress::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(185, 138, 89, 0.05), rgba(185, 138, 89, 0.8), rgba(185, 138, 89, 0.05));
  animation: shimmer 1.3s linear infinite;
}

@keyframes shimmer {
  from {
    transform: translateX(-40%);
  }
  to {
    transform: translateX(40%);
  }
}

.more-row {
  background: linear-gradient(180deg, #f0ebe1, #e6dece);
  color: #4a3f30;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(74, 63, 48, 0.08);
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.more-dot {
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: rgba(74, 63, 48, 0.12);
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: 2px;
}

.more-tip {
  font-size: 13px;
  color: rgba(74, 63, 48, 0.75);
}

.more-btn {
  border: 1px solid rgba(74, 63, 48, 0.2);
  background: rgba(255, 255, 255, 0.9);
  color: #4a3f30;
  border-radius: 10px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
  transition: all 120ms ease;
}

.more-btn:hover {
  background: #fff;
  box-shadow: 0 6px 14px rgba(74, 63, 48, 0.12);
}

.flow-enter {
  max-height: 0;
  opacity: 0;
  transform: translateY(18px);
}

.flow-enter-active {
  max-height: 420px;
  opacity: 1;
  transform: translateY(0);
  transition: max-height 260ms cubic-bezier(0.25, 0.9, 0.3, 1), opacity 220ms ease, transform 260ms ease;
}

.peek {
  clip-path: var(--peek-clip);
  transform: translateY(18px);
  opacity: 0.65;
  transition: clip-path 260ms ease, transform 260ms ease, opacity 220ms ease;
}

.block-row,
.more-row {
  transition: transform 220ms ease, opacity 220ms ease;
}

.footer-note {
  color: var(--muted);
  font-size: 12px;
  text-align: right;
  margin-top: 6px;
}
