:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #667085;
  --line: #dbe2ea;
  --primary: #1268d6;
  --primary-strong: #0b53ad;
  --soft: #eaf3ff;
  --danger: #c03434;
  --shadow: 0 16px 45px rgba(20, 36, 66, .1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

button,
.file-btn {
  border: 0;
  border-radius: 7px;
  cursor: pointer;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 26px 34px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: 30px;
}

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

.primary,
.ghost,
.danger {
  min-height: 38px;
  padding: 0 14px;
}

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

.primary:hover {
  background: var(--primary-strong);
}

.ghost {
  color: var(--text);
  background: #eef3f8;
}

.danger {
  color: #fff;
  background: var(--danger);
}

.file-btn {
  display: inline-flex;
  align-items: center;
  position: relative;
}

.file-btn input {
  display: none;
}

.app-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 22px;
  padding: 24px 34px 36px;
}

.sidebar,
.content {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.sidebar {
  min-height: calc(100vh - 150px);
  padding: 18px;
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  color: var(--muted);
  font-weight: 700;
}

.section-title button,
.small-add {
  width: 30px;
  height: 30px;
  color: #fff;
  background: var(--primary);
  font-size: 20px;
  line-height: 1;
}

.tree {
  display: grid;
  gap: 12px;
}

.category-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fbfdff;
}

.category-row,
.product-row {
  width: 100%;
  text-align: left;
  background: transparent;
  color: var(--text);
}

.category-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 12px;
  font-weight: 700;
}

.category-row.active,
.product-row.active {
  background: var(--soft);
  color: var(--primary-strong);
}

.product-list {
  padding: 6px;
  border-top: 1px solid var(--line);
}

.product-row {
  display: block;
  padding: 9px 10px;
  border-radius: 6px;
}

.product-row small {
  display: block;
  color: var(--muted);
  margin-top: 2px;
}

.content {
  min-height: calc(100vh - 150px);
  padding: 26px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: start;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.hero h2 {
  margin-bottom: 8px;
  font-size: 30px;
}

.summary {
  max-width: 780px;
  color: var(--muted);
  line-height: 1.7;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 11px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--primary-strong);
  font-weight: 700;
  font-size: 13px;
}

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

.user-tip {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.7;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: #fff;
}

.card h3 {
  margin-bottom: 12px;
  font-size: 18px;
}

.download-card {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.download-card:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.download-card p,
.timeline p,
.empty {
  color: var(--muted);
  line-height: 1.6;
}

.download-card a {
  flex: 0 0 auto;
  padding: 10px 13px;
  border-radius: 7px;
  text-decoration: none;
  color: #fff;
  background: var(--primary);
}

.download-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

.download-actions .danger,
.timeline-item .danger {
  min-height: 34px;
  padding: 0 11px;
}

.doc-box {
  min-height: 160px;
  white-space: pre-wrap;
  color: #344054;
  line-height: 1.75;
}

.timeline {
  display: grid;
  gap: 12px;
}

.timeline-item {
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}

.timeline-item strong {
  display: block;
  margin-bottom: 4px;
}

.wide {
  grid-column: 1 / -1;
}

dialog {
  width: min(560px, calc(100vw - 28px));
  border: 0;
  border-radius: 8px;
  padding: 0;
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(16, 24, 40, .35);
}

.modal-card {
  padding: 20px;
}

.modal-head,
.modal-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.icon-btn {
  width: 34px;
  height: 34px;
  background: #eef3f8;
  color: var(--text);
  font-size: 22px;
}

.modal-fields {
  display: grid;
  gap: 13px;
  margin: 18px 0;
}

.field {
  display: grid;
  gap: 7px;
}

.field label {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 10px 11px;
  color: var(--text);
  background: #fff;
}

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

@media (max-width: 880px) {
  .topbar,
  .hero {
    display: block;
  }

  .top-actions,
  .toolbar {
    margin-top: 16px;
  }

  .app-shell {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .sidebar {
    min-height: auto;
  }

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