:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --ink: #17202a;
  --muted: #667085;
  --line: #d9e0e8;
  --primary: #174a7c;
  --primary-2: #0f6b6d;
  --danger: #b42318;
  --warning: #a15c07;
  --success: #067647;
  --shadow: 0 18px 45px rgba(23, 32, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  padding: 10px 16px;
  cursor: pointer;
}

button.secondary {
  background: #e9f1f7;
  color: var(--primary);
}

button.ghost {
  background: transparent;
  color: var(--primary);
  padding: 6px 8px;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.is-hidden {
  display: none !important;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 40px;
  background:
    linear-gradient(120deg, rgba(23, 74, 124, 0.92), rgba(15, 107, 109, 0.86)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='.16'%3E%3Cpath d='M20 25h140v98H20z'/%3E%3Cpath d='M42 51h96M42 75h72M42 99h88M64 125h52'/%3E%3C/g%3E%3C/svg%3E");
}

.login-panel {
  width: min(760px, 100%);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 8px;
  padding: 42px;
  box-shadow: var(--shadow);
}

.brand-block,
.side-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-mark {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 26px;
}

.brand-mark.small {
  width: 38px;
  height: 38px;
  font-size: 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--primary-2);
  font-size: 12px;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: 32px;
}

h2 {
  margin-bottom: 0;
}

h3 {
  margin-bottom: 0;
  font-size: 18px;
}

.subtle,
.side-note p,
.file-list span,
.doc-grid span,
.task-meta {
  color: var(--muted);
}

.login-form {
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 14px;
  align-items: end;
}

label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-size: 13px;
}

input {
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
}

select {
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
  background: #fff;
  color: var(--ink);
}

.file-input {
  max-width: 260px;
  height: 42px;
  padding: 8px 10px;
  background: #fff;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.sidebar {
  background: #0f2233;
  color: #fff;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.side-brand span {
  display: block;
  color: #a9b8c8;
  font-size: 12px;
  margin-top: 4px;
}

.nav-list {
  display: grid;
  gap: 8px;
}

.nav-item {
  width: 100%;
  text-align: left;
  background: transparent;
  color: #c7d3df;
  border: 1px solid transparent;
}

.nav-item.active,
.nav-item:hover {
  background: #18344e;
  color: #fff;
  border-color: #2b526f;
}

.side-note {
  margin-top: auto;
  border: 1px solid #2b526f;
  border-radius: 8px;
  padding: 16px;
  background: #132b40;
}

.side-note span {
  display: block;
  color: #a9b8c8;
  font-size: 12px;
  margin-bottom: 8px;
}

.content {
  min-width: 0;
  padding: 26px;
  overflow-x: hidden;
}

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

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mode-switch {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
}

.mode-switch button {
  border-radius: 0;
  background: #fff;
  color: var(--muted);
  padding: 10px 12px;
}

.mode-switch button.active {
  background: var(--primary);
  color: #fff;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.workspace-grid,
.two-col,
.calendar-layout,
.rule-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, 0.75fr);
  gap: 18px;
  margin-bottom: 18px;
}

.beginner-guide {
  margin-bottom: 18px;
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.guide-steps article,
.empty-state {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px;
  background: #fbfdff;
}

.guide-steps strong {
  display: block;
  margin-bottom: 8px;
  color: var(--primary);
}

.guide-steps span,
.empty-state {
  color: var(--muted);
  line-height: 1.58;
}

.panel,
.drop-zone {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 8px 25px rgba(23, 32, 42, 0.04);
}

.drop-zone {
  min-height: 236px;
  display: grid;
  align-content: center;
  border-style: dashed;
  border-width: 2px;
  background: #fbfdff;
}

.drop-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: #e6f2f4;
  color: var(--primary-2);
  font-size: 28px;
  margin-bottom: 18px;
}

.upload-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 8px;
  color: var(--muted);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.panel-head span {
  color: var(--muted);
  font-size: 13px;
}

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

.metric {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 10px;
}

.metric strong {
  font-size: 25px;
}

.metric.warning strong {
  color: var(--warning);
}

.task-list,
.file-list,
.project-table,
.legend-list {
  display: grid;
  gap: 12px;
}

.task-item,
.file-list article,
.project-row,
.rule-card,
.doc-grid article {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px;
  background: #fff;
}

.task-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
}

.date-box {
  min-width: 58px;
  text-align: center;
  border-radius: 6px;
  border: 1px solid var(--line);
  padding: 8px 6px;
  color: var(--primary);
  font-weight: 700;
}

.date-box span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 12px;
  background: #edf4fb;
  color: var(--primary);
}

.tag.red {
  background: #fef3f2;
  color: var(--danger);
}

.tag.amber {
  background: #fffaeb;
  color: var(--warning);
}

.tag.green {
  background: #ecfdf3;
  color: var(--success);
}

.segmented {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.segmented button {
  border-radius: 0;
  background: #fff;
  color: var(--muted);
  border-right: 1px solid var(--line);
}

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

.project-row {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 0.75fr 0.75fr 0.75fr;
  gap: 14px;
  align-items: center;
}

.project-row strong,
.file-list strong,
.doc-grid strong {
  display: block;
  margin-bottom: 6px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.day {
  min-height: 104px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 9px;
  background: #fff;
}

.day:nth-child(7n) {
  border-right: 0;
}

.day strong {
  display: block;
  font-size: 13px;
  margin-bottom: 8px;
}

.day span {
  display: block;
  border-radius: 4px;
  padding: 4px 5px;
  margin-bottom: 5px;
  font-size: 12px;
  background: #edf4fb;
  color: var(--primary);
}

.day span.red {
  background: #fef3f2;
  color: var(--danger);
}

.day span.green {
  background: #ecfdf3;
  color: var(--success);
}

.day span.amber {
  background: #fffaeb;
  color: var(--warning);
}

.legend-list span {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #344054;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.blue {
  background: var(--primary);
}

.green {
  background: var(--success);
}

.amber {
  background: var(--warning);
}

.red {
  background: var(--danger);
}

.calendar-detail {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.rule-layout {
  grid-template-columns: 390px 1fr;
}

.rule-list {
  display: grid;
  gap: 12px;
  align-content: start;
}

.rule-card {
  text-align: left;
  cursor: pointer;
}

.rule-card.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(23, 74, 124, 0.12);
}

.rule-detail h3 {
  margin-bottom: 12px;
}

.evidence-block,
.solution-block,
.article-block {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  margin-top: 16px;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.solution-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px;
  background: #fbfdff;
}

.solution-card h4 {
  margin-bottom: 8px;
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.doc-grid article {
  display: grid;
  gap: 8px;
}

.document-preview {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
  overflow: hidden;
}

.document-preview-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  padding: 18px;
  background: #fff;
}

.document-preview-head p {
  margin: 8px 0 0;
  color: var(--muted);
}

.document-preview-head span {
  white-space: nowrap;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
  color: var(--primary);
  font-size: 12px;
}

.document-preview pre {
  margin: 0;
  padding: 22px;
  white-space: pre-wrap;
  color: #243242;
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.75;
}

.contract-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.review-status {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
  color: var(--muted);
  font-size: 13px;
}

.review-status strong {
  color: var(--primary);
  white-space: nowrap;
}

.review-status.error strong {
  color: var(--danger);
}

.review-status.success strong {
  color: var(--success);
}

.contract-toolbar p {
  margin: 8px 0 0;
  color: var(--muted);
}

.toolbar-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.reading-guide {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: 0 0 10px;
  color: #344054;
  font-size: 13px;
}

.reading-guide span {
  color: var(--muted);
}

.reading-guide strong {
  font-weight: 700;
}

.contract-review {
  display: grid;
  grid-template-columns: minmax(540px, 1.55fr) repeat(3, minmax(250px, 0.72fr));
  gap: 16px;
  min-height: 650px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 16px 12px;
  background: #e8edf2;
  scroll-snap-type: x proximity;
}

.contract-pane.original {
  min-width: 540px;
}

.contract-pane.issues,
.contract-pane.laws,
.contract-pane.solutions {
  min-width: 250px;
}

.contract-pane {
  min-width: 0;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 218px);
  min-height: 620px;
  scroll-snap-align: start;
  padding: 0;
  overflow: hidden;
  border-color: #cfd8e3;
  box-shadow: 0 14px 32px rgba(23, 32, 42, 0.12);
}

.contract-text,
.issue-list,
.law-list,
.solution-stack {
  display: grid;
  gap: 12px;
  align-content: start;
  overflow-y: auto;
  padding: 0 18px 18px;
}

.template-output {
  margin: 0 18px 18px;
  border: 1px solid #b8c7d6;
  border-radius: 6px;
  padding: 14px;
  background: #f8fbff;
}

.template-output h4 {
  margin-bottom: 10px;
}

.template-output pre {
  white-space: pre-wrap;
  margin: 0;
  color: #344054;
  font-family: inherit;
  line-height: 1.6;
}

.generated-task-form {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.generated-task-form label {
  display: grid;
  gap: 6px;
  color: #344054;
  font-size: 13px;
}

.generated-task-form input {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 10px;
  font: inherit;
}

.pending-task {
  border-left: 4px solid var(--warning);
}

.contract-text {
  border: 0;
  border-radius: 0;
  padding: 8px 38px 28px;
  line-height: 1.82;
  background: #fcfdff;
  font-size: 15px;
  max-width: 860px;
  margin: 0 auto;
}

.contract-pane:not(.original) .panel-head h3 {
  font-size: 15px;
}

.contract-pane:not(.original) .issue,
.contract-pane:not(.original) .law-list article,
.contract-pane:not(.original) .solution-stack article {
  padding: 12px;
}

.contract-pane .panel-head {
  position: sticky;
  top: 0;
  z-index: 1;
  margin: 0;
  padding: 18px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.contract-pane::before {
  content: attr(data-page);
  position: sticky;
  top: 0;
  z-index: 2;
  width: fit-content;
  margin: 18px 18px -42px auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 9px;
  color: var(--muted);
  background: #fff;
  font-size: 12px;
}

.contract-text p {
  margin-bottom: 12px;
}

.risk-highlight {
  border-radius: 4px;
  background: #fff3cd;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  padding: 2px 4px;
  cursor: pointer;
}

.risk-highlight.active {
  background: #ffd8a8;
  box-shadow: inset 0 -2px 0 var(--warning);
}

.text-risk-mark {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  margin: 0 4px;
  padding: 0;
  border-radius: 50%;
  background: #fff7ed;
  border: 1px solid #fdba74;
  color: #9a3412;
  font-weight: 800;
  line-height: 1;
  vertical-align: text-bottom;
}

.text-risk-mark.active {
  background: var(--warning);
  border-color: var(--warning);
  color: #fff;
}

.issue-collapsed {
  display: none !important;
}

.issue-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.issue,
.law-list article,
.solution-stack article {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px;
  background: #fff;
}

.issue.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(23, 74, 124, 0.12);
}

.issue strong,
.law-list strong,
.solution-stack strong {
  display: block;
  margin: 8px 0;
}

.issue p,
.law-list p,
.solution-stack p {
  color: #344054;
  line-height: 1.58;
}

.law-list span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.revision {
  border-top: 1px solid var(--line);
  margin-top: 12px;
  padding-top: 12px;
}

.revision span {
  color: var(--primary-2);
  font-size: 13px;
  font-weight: 700;
}

@media (max-width: 1100px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .workspace-grid,
  .two-col,
  .calendar-layout,
  .rule-layout,
  .doc-grid,
  .guide-steps,
  .login-form {
    grid-template-columns: 1fr;
  }

  .contract-review {
    grid-template-columns: minmax(330px, 88vw) repeat(3, minmax(280px, 78vw));
  }

  .contract-pane.original {
    min-width: 330px;
  }

  .contract-text {
    padding: 8px 20px 24px;
  }

  .contract-toolbar,
  .toolbar-actions,
  .top-actions {
    align-items: stretch;
    flex-direction: column;
  }

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