:root {
  --bg: #f4eee2;
  --panel: rgba(255, 252, 246, 0.96);
  --line: #d8c9af;
  --text: #2d2418;
  --muted: #6d624d;
  --accent: #b75a2f;
  --accent-deep: #8e3f20;
  --accent-soft: #f8ddd1;
  --olive: #6a7a3c;
  --olive-soft: #e2ebca;
  --tab-soft: #efe7d8;
  --shadow: 0 18px 42px rgba(60, 44, 16, 0.08);
  --radius: 20px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.85), transparent 30%),
    linear-gradient(135deg, #efe6d7 0%, #f8f3ea 40%, #f3ebdb 100%);
}

button, input, textarea { font: inherit; }
button { cursor: pointer; }

.app {
  max-width: 1520px;
  margin: 0 auto;
  padding: 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 22px;
}

.topbar h1 {
  margin: 8px 0 6px;
  font-size: 34px;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.subtitle, .muted {
  color: var(--muted);
}

.topbar-actions, .actions-right, .badge-row, .chip-row, .btn-row, .tab-row, .focus-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 310px;
  gap: 20px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(216, 201, 175, 0.7);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.side {
  padding: 20px;
  position: sticky;
  top: 24px;
}

.main {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero, #stepContent, .actions {
  padding: 24px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: flex-start;
  background:
    linear-gradient(140deg, rgba(255,255,255,0.96), rgba(250,239,228,0.94)),
    linear-gradient(120deg, rgba(183,90,47,0.08), rgba(106,122,60,0.08));
}

.hero h2 {
  margin: 6px 0 8px;
  font-size: 28px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.panel-head h2, .stack h3, .section h3 {
  margin: 0;
}

.step-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.step {
  display: flex;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 16px;
  color: var(--muted);
  border: 1px solid transparent;
  background: transparent;
  width: 100%;
  text-align: left;
}

.step.active {
  background: rgba(183, 90, 47, 0.1);
  border-color: rgba(183, 90, 47, 0.2);
  color: var(--text);
}

.step.done {
  background: rgba(106, 122, 60, 0.08);
  color: #42501d;
}

.step-index {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  background: rgba(216, 201, 175, 0.5);
  flex: 0 0 auto;
}

.step.active .step-index {
  background: var(--accent);
  color: #fff;
}

.step.done .step-index {
  background: var(--olive);
  color: #fff;
}

.step-copy strong {
  display: block;
  margin-bottom: 4px;
}

.step-copy span, .small, .item span {
  font-size: 14px;
  color: var(--muted);
}

.note, .banner {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(111, 98, 77, 0.08);
}

.banner {
  margin-top: 0;
  background: rgba(255, 224, 168, 0.28);
  border: 1px solid rgba(216, 201, 175, 0.6);
  color: #75521d;
}

.btn {
  border: 0;
  border-radius: 14px;
  padding: 12px 18px;
  font-weight: 600;
}

.btn.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  box-shadow: 0 12px 24px rgba(183, 90, 47, 0.22);
}

.btn.ghost {
  color: var(--text);
  background: rgba(255,255,255,0.76);
  border: 1px solid rgba(216, 201, 175, 0.8);
}

.badge, .pill, .tag, .mini-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
}

.badge {
  background: rgba(183,90,47,0.1);
  color: var(--accent-deep);
  border: 1px solid rgba(183,90,47,0.16);
}

.pill {
  background: var(--olive-soft);
  color: #43501b;
}

.tag {
  background: rgba(111,98,77,0.08);
  color: var(--muted);
}

.mini-pill {
  background: var(--tab-soft);
  color: #5d4d35;
}

.stack, .section {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-grid, .choice-grid, .card-grid, .summary-grid {
  display: grid;
  gap: 14px;
}

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

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

.field, .field-full {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-full {
  grid-column: 1 / -1;
}

label {
  font-weight: 600;
  font-size: 14px;
}

input, textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(216, 201, 175, 0.9);
  background: rgba(255,255,255,0.84);
  color: var(--text);
}

textarea {
  min-height: 110px;
  resize: vertical;
}

.choice-card, .data-card, .summary-item, .question-card {
  background: rgba(255,255,255,0.75);
  border: 1px solid rgba(216, 201, 175, 0.7);
  border-radius: 18px;
  padding: 16px;
}

.choice-card {
  text-align: left;
}

.choice-card.selected {
  border-color: rgba(183,90,47,0.4);
  background: rgba(248, 221, 209, 0.62);
}

.choice-card.selected strong::after {
  content: " 已选";
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 700;
}

.choice-card strong, .data-card h4, .question-card h4 {
  display: block;
  margin: 0 0 6px;
}

.choice-card span, .data-card p, .question-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.summary-item strong {
  display: block;
  margin-bottom: 6px;
}

hr {
  border: 0;
  height: 1px;
  background: rgba(216, 201, 175, 0.8);
  margin: 18px 0;
}

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tab {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(216, 201, 175, 0.9);
  background: rgba(255,255,255,0.72);
  color: var(--text);
}

.tab.active {
  background: var(--accent-soft);
  border-color: rgba(183,90,47,0.35);
  color: var(--accent-deep);
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(45, 36, 24, 0.94);
  color: #fff;
  box-shadow: 0 16px 34px rgba(45, 36, 24, 0.18);
}

@media (max-width: 1260px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .side {
    position: static;
  }
}

@media (max-width: 900px) {
  .app {
    padding: 16px;
  }

  .topbar, .hero, .actions {
    flex-direction: column;
  }

  .form-grid, .choice-grid, .card-grid, .summary-grid {
    grid-template-columns: 1fr;
  }
}