:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --ink: #17202e;
  --muted: #667085;
  --line: #d8e0ea;
  --line-soft: #edf1f5;
  --brand: #1f5f8b;
  --brand-ink: #0b3b57;
  --green: #16803c;
  --amber: #b55d09;
  --red: #b42318;
  --blue: #1d4ed8;
  --purple: #6f42c1;
  --shadow: 0 10px 28px rgba(16, 24, 40, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.45;
}

button, input, select, textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  background: #eef3f7;
}

.login-panel {
  background: #0b3b57;
  color: #fff;
  padding: 42px 34px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.login-panel h1 {
  margin: 0 0 14px;
  font-size: 32px;
  letter-spacing: 0;
}

.login-panel p {
  color: #d5e4ec;
  margin: 0;
}

.login-meta {
  display: grid;
  gap: 10px;
  color: #d5e4ec;
  font-size: 13px;
}

.login-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
}

.login-card {
  width: min(620px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 28px;
}

.login-card h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.login-card .hint {
  color: var(--muted);
  margin: 0 0 18px;
  font-size: 14px;
}

.login-form {
  display: grid;
  gap: 12px;
}

.login-form .btn {
  justify-content: center;
}

.login-error {
  color: var(--red);
  background: #fee4e2;
  border: 1px solid #fecdca;
  border-radius: 7px;
  padding: 9px 10px;
  font-size: 13px;
}

.demo-account {
  margin-top: 16px;
  display: grid;
  gap: 4px;
  border-top: 1px solid var(--line-soft);
  padding-top: 14px;
  color: var(--muted);
  font-size: 13px;
}

.demo-account b {
  color: var(--ink);
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px 1fr;
}

.sidebar {
  background: #102b3f;
  color: #fff;
  padding: 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.brand-block {
  padding: 8px 8px 14px;
  border-bottom: 1px solid rgba(255,255,255,.14);
}

.brand-block h1 {
  margin: 0;
  font-size: 19px;
  letter-spacing: 0;
}

.brand-block p {
  margin: 6px 0 0;
  color: #c8d7df;
  font-size: 12px;
}

.nav {
  display: grid;
  gap: 6px;
}

.nav button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  padding: 10px;
  color: #e5eef3;
  background: transparent;
  border-radius: 7px;
}

.nav button.active,
.nav button:hover {
  background: rgba(255,255,255,.12);
}

.nav .icon {
  width: 22px;
  text-align: center;
  color: #b9d2df;
}

.current-user {
  margin-top: auto;
  border-top: 1px solid rgba(255,255,255,.14);
  padding: 14px 8px 4px;
}

.current-user strong,
.current-user span {
  display: block;
}

.current-user span {
  color: #c8d7df;
  font-size: 12px;
  margin-top: 3px;
}

.logout,
.account-action {
  margin-top: 10px;
  background: rgba(255,255,255,.1);
  color: #fff;
  border-radius: 7px;
  padding: 8px 10px;
  width: 100%;
}

.account-action {
  margin-top: 12px;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.16);
}

.account-action:hover,
.logout:hover {
  background: rgba(255,255,255,.22);
}

.main {
  min-width: 0;
}

.topbar {
  min-height: 68px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.topbar h2 {
  margin: 0;
  font-size: 22px;
}

.topbar p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-radius: 7px;
  padding: 9px 12px;
  background: #e9eff5;
  color: #1f3445;
  border: 1px solid #d7e0e8;
  white-space: nowrap;
}

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

.btn.danger {
  background: #fee4e2;
  color: var(--red);
  border-color: #fecdca;
}

.content {
  padding: 20px 22px 32px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.metric {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
}

.metric strong {
  display: block;
  font-size: 26px;
  margin-bottom: 4px;
}

.metric span {
  color: var(--muted);
  font-size: 12px;
}

.grid-2 {
  display: grid;
  grid-template-columns: minmax(300px, 420px) 1fr;
  gap: 14px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(16, 24, 40, 0.04);
}

.panel-head {
  padding: 14px 15px;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.panel-head h3 {
  margin: 0;
  font-size: 16px;
}

.panel-body {
  padding: 14px 15px;
}

.filters {
  display: grid;
  grid-template-columns: 1.2fr repeat(4, minmax(130px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  color: #475467;
  font-size: 12px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  padding: 9px 10px;
  min-height: 38px;
}

.field textarea {
  resize: vertical;
  min-height: 88px;
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th, td {
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  padding: 10px 9px;
  vertical-align: top;
}

th {
  color: #475467;
  font-size: 12px;
  font-weight: 700;
  background: #f8fafc;
}

tr:hover td {
  background: #fbfdff;
}

.link-btn {
  color: var(--brand);
  background: transparent;
  padding: 0;
  text-align: left;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 7px;
  border-radius: 6px;
  font-size: 12px;
  border: 1px solid var(--line);
  background: #f8fafc;
  color: #344054;
  white-space: nowrap;
}

.badge.green { color: #027a48; background: #ecfdf3; border-color: #abefc6; }
.badge.amber { color: #b54708; background: #fffaeb; border-color: #fedf89; }
.badge.red { color: #b42318; background: #fee4e2; border-color: #fecdca; }
.badge.blue { color: #1849a9; background: #eff4ff; border-color: #c7d7fe; }
.badge.purple { color: #5925dc; background: #f4f3ff; border-color: #d9d6fe; }

.tree {
  display: grid;
  gap: 6px;
}

.tree-row {
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  background: #fff;
  padding: 9px;
}

.tree-row.track,
.tree-row.category {
  display: flex;
  align-items: flex-start;
  gap: 7px;
}

.tree-row.track { padding: 12px 11px; border-left-width: 5px; }
.tree-row.category { padding: 10px; border-left-width: 4px; }
.tree-row.item { padding: 8px 9px; border-left-width: 3px; }

.tree-row.color-0.track { border-color: #60a5fa; background: #dbeafe; border-left-color: #1d4ed8; }
.tree-row.color-0.category { border-color: #93c5fd; background: #eff6ff; border-left-color: #3b82f6; }
.tree-row.color-0.item { border-left-color: #bfdbfe; }

.tree-row.color-1.track { border-color: #facc15; background: #fef3c7; border-left-color: #ca8a04; }
.tree-row.color-1.category { border-color: #fde68a; background: #fffbeb; border-left-color: #eab308; }
.tree-row.color-1.item { border-left-color: #fde68a; }

.tree-row.color-2.track { border-color: #4ade80; background: #dcfce7; border-left-color: #15803d; }
.tree-row.color-2.category { border-color: #86efac; background: #f0fdf4; border-left-color: #22c55e; }
.tree-row.color-2.item { border-left-color: #bbf7d0; }

.tree-row.color-3.track { border-color: #c084fc; background: #f3e8ff; border-left-color: #7e22ce; }
.tree-row.color-3.category { border-color: #d8b4fe; background: #faf5ff; border-left-color: #a855f7; }
.tree-row.color-3.item { border-left-color: #e9d5ff; }

.tree-row.color-4.track { border-color: #f472b6; background: #fce7f3; border-left-color: #be185d; }
.tree-row.color-4.category { border-color: #f9a8d4; background: #fdf2f8; border-left-color: #ec4899; }
.tree-row.color-4.item { border-left-color: #fbcfe8; }

.tree-row.color-5.track { border-color: #22d3ee; background: #cffafe; border-left-color: #0e7490; }
.tree-row.color-5.category { border-color: #67e8f9; background: #ecfeff; border-left-color: #06b6d4; }
.tree-row.color-5.item { border-left-color: #a5f3fc; }

.tree-row.color-6.track { border-color: #fb923c; background: #ffedd5; border-left-color: #c2410c; }
.tree-row.color-6.category { border-color: #fdba74; background: #fff7ed; border-left-color: #f97316; }
.tree-row.color-6.item { border-left-color: #fed7aa; }

.tree-row.color-7.track { border-color: #a78bfa; background: #ede9fe; border-left-color: #6d28d9; }
.tree-row.color-7.category { border-color: #c4b5fd; background: #f5f3ff; border-left-color: #8b5cf6; }
.tree-row.color-7.item { border-left-color: #ddd6fe; }

.tree-row button {
  background: transparent;
  color: var(--ink);
  text-align: left;
  width: 100%;
  padding: 0;
}

.tree-row .tree-toggle {
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
  border: 1px solid rgba(31, 52, 69, 0.16);
  border-radius: 5px;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 800;
  color: #1f3445;
  background: rgba(255,255,255,.55);
}

.tree-row .tree-toggle:hover {
  background: rgba(255,255,255,.9);
}

.tree-move-group {
  display: grid;
  gap: 3px;
  flex: 0 0 24px;
}

.tree-row .tree-move {
  width: 24px;
  height: 19px;
  border: 1px solid rgba(31, 52, 69, 0.16);
  border-radius: 5px;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 800;
  color: #1f3445;
  background: rgba(255,255,255,.62);
}

.tree-row .tree-move:hover:not(:disabled) {
  background: rgba(255,255,255,.95);
}

.tree-row .tree-move:disabled {
  cursor: not-allowed;
  opacity: .36;
}

.tree-row.track button[data-select-project],
.tree-row.category button[data-select-project] {
  flex: 1;
  min-width: 0;
}

.tree-row.active {
  outline: 2px solid rgba(31, 95, 139, 0.35);
  outline-offset: 1px;
  box-shadow: 0 0 0 3px rgba(31, 95, 139, 0.1);
}

.tree-title {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.tree-title strong {
  font-size: 13px;
}

.tree-row.track .tree-title strong {
  font-size: 16px;
  color: #0b3b57;
  font-weight: 800;
}

.tree-row.category .tree-title strong {
  font-size: 14px;
  color: #1f3445;
  font-weight: 700;
}

.tree-row.item .tree-title strong {
  font-size: 13px;
  color: #344054;
  font-weight: 600;
}

.tree-meta {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.tree-row.track .tree-meta {
  color: #35657f;
  font-size: 12px;
}

.tree-row.category .tree-meta {
  color: #5c7184;
}

.indent-0 { margin-left: 0; }
.indent-1 { margin-left: 22px; }
.indent-2 { margin-left: 46px; }

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

.detail-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.detail-title h3 {
  margin: 0 0 6px;
  font-size: 22px;
}

.kv {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.kv div {
  background: #f8fafc;
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  padding: 10px;
}

.kv b,
.update-item b {
  display: block;
  font-size: 12px;
  color: #475467;
  margin-bottom: 4px;
}

.timeline {
  display: grid;
  gap: 8px;
}

.update-item {
  border-left: 3px solid var(--brand);
  background: #f8fafc;
  padding: 9px 10px;
  border-radius: 0 7px 7px 0;
}

.update-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 4px;
}

.danger-text {
  color: var(--red);
  font-size: 12px;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .48);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 38px 14px;
  z-index: 10;
  overflow: auto;
}

.modal {
  width: min(760px, 100%);
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--line);
  box-shadow: 0 18px 50px rgba(16, 24, 40, 0.24);
}

.modal.small {
  width: min(520px, 100%);
}

.modal-head {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.modal-head h3 {
  margin: 0;
}

.modal-body {
  padding: 16px 18px;
}

.modal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

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

.form-stack {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.rule-card {
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  padding: 12px;
  background: var(--soft);
}

.rule-card strong,
.rule-card span {
  display: block;
}

.rule-card span {
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.modal-foot {
  padding: 14px 18px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.empty {
  color: var(--muted);
  padding: 20px;
  text-align: center;
}

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

.note-line {
  padding: 9px 10px;
  border: 1px solid #fedf89;
  background: #fffaeb;
  color: #8a4b0f;
  border-radius: 7px;
  font-size: 13px;
}

.site-record-footer {
  width: min(920px, calc(100% - 28px));
  margin: 24px auto 0;
  padding: 18px 16px 22px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 28px;
  font-size: 14px;
}

.record-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: #1677ff;
  text-decoration: none;
}

.record-link:hover {
  color: #0958d9;
  text-decoration: none;
}

.public-security-mark {
  width: 20px;
  height: 22px;
  flex: 0 0 20px;
  object-fit: contain;
}

@media (max-width: 1080px) {
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2 { grid-template-columns: 1fr; }
  .filters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .login-shell,
  .app-shell {
    display: block;
  }
  .sidebar {
    min-height: auto;
  }
  .nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .topbar {
    display: block;
  }
  .actions {
    justify-content: flex-start;
    margin-top: 12px;
  }
  .filters,
  .modal-grid,
  .kv {
    grid-template-columns: 1fr;
  }
  .content {
    padding: 14px;
  }
  .site-record-footer {
    margin-top: 14px;
    padding-bottom: 18px;
    flex-direction: column;
    gap: 10px;
  }
}