:root {
  --bg: #f5f2ea;
  --paper: #fffdf8;
  --soft: #fbf6ec;
  --ink: #17211d;
  --text: #2f3a35;
  --muted: #6f7a73;
  --line: #ded5c4;
  --line-strong: #c7bba8;
  --teal: #2d786b;
  --blue: #365f94;
  --clay: #b66342;
  --gold: #987327;
  --green-soft: #e5f0eb;
  --blue-soft: #e7eef8;
  --clay-soft: #f7e5dc;
  --gold-soft: #f5edd7;
  --shadow: 0 20px 56px rgba(30, 36, 32, 0.08);
  --max: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(125deg, rgba(45, 120, 107, 0.09), transparent 34%),
    linear-gradient(245deg, rgba(182, 99, 66, 0.08), transparent 31%),
    var(--bg);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.78;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button,
input {
  font: inherit;
}

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

h1,
h2,
h3 {
  color: var(--ink);
  line-height: 1.18;
  letter-spacing: 0;
}

p {
  margin-bottom: 0;
}

.boot {
  min-height: 100svh;
  display: grid;
  place-items: center;
  gap: 6px;
  align-content: center;
  color: var(--muted);
}

.boot strong {
  color: var(--ink);
  font-size: 24px;
}

.app-shell {
  min-height: 100svh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(222, 213, 196, 0.9);
  background: rgba(255, 253, 248, 0.9);
  backdrop-filter: blur(18px);
}

.topbar-inner {
  width: min(calc(100% - 32px), var(--max));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.ghost-reset {
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--ink);
  font-weight: 900;
  flex: 0 0 auto;
}

.brand strong,
.brand span {
  display: block;
  white-space: nowrap;
}

.brand strong {
  color: var(--ink);
  font-size: 15px;
}

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

.nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 0;
}

.nav button,
.nav a,
.ghost-button,
.solid-button {
  min-height: 38px;
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.68);
  color: var(--text);
  white-space: nowrap;
  font-size: 13px;
  cursor: pointer;
}

.solid-button {
  color: white;
  background: var(--ink);
  border-color: var(--ink);
  font-weight: 800;
}

.ghost-button:hover,
.nav button:hover,
.nav a:hover {
  text-decoration: none;
  border-color: var(--line-strong);
  color: var(--ink);
}

.page {
  width: min(calc(100% - 32px), var(--max));
  margin: 24px auto 56px;
}

.login-layout {
  min-height: calc(100svh - 112px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.78fr);
  gap: 20px;
  align-items: stretch;
}

.login-hero,
.login-panel,
.dashboard-panel,
.lesson-section,
.catalog-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.login-hero {
  padding: 42px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  min-height: 560px;
}

.label {
  width: fit-content;
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 8px;
  color: var(--teal);
  background: var(--green-soft);
  font-size: 13px;
  font-weight: 800;
}

.login-hero h1 {
  max-width: 12em;
  margin: 18px 0;
  font-size: 48px;
}

.lede {
  max-width: 60ch;
  color: var(--muted);
  font-size: 17px;
}

.scope-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.scope-tile,
.stat-tile {
  min-height: 104px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.scope-tile span,
.stat-tile span {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 12px;
}

.scope-tile strong,
.stat-tile strong {
  display: block;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.45;
}

.login-panel {
  padding: 30px;
  min-height: 560px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
}

.login-panel h2 {
  margin-bottom: 4px;
  font-size: 28px;
}

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

.field label {
  color: var(--ink);
  font-weight: 800;
}

.field input {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 10px 12px;
  background: white;
  color: var(--text);
}

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

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

.dashboard-grid {
  display: grid;
  grid-template-columns: 0.76fr 1.24fr;
  gap: 20px;
  align-items: start;
}

.dashboard-panel {
  padding: 28px;
}

.dashboard-panel h1 {
  margin: 10px 0;
  font-size: 38px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.catalog-list {
  display: grid;
  gap: 12px;
}

.catalog-card {
  padding: 20px;
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
}

.lesson-no {
  min-height: 74px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--ink);
  font-size: 28px;
  font-weight: 900;
}

.catalog-card h3 {
  margin: 0 0 6px;
}

.catalog-card p {
  color: var(--muted);
}

.lesson-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(360px, 1.04fr);
  gap: 20px;
  align-items: stretch;
}

.lesson-intro,
.lesson-map {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.lesson-intro {
  padding: 42px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 28px;
}

.lesson-intro h1 {
  max-width: 13em;
  margin: 18px 0;
  font-size: 44px;
}

.lesson-map {
  padding: 30px;
}

.route {
  margin-top: 22px;
  display: grid;
  gap: 11px;
}

.route-step {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 12px;
}

.route-num {
  min-height: 64px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--ink);
  font-weight: 900;
}

.route-card {
  min-height: 64px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.route-card strong {
  display: block;
  color: var(--ink);
}

.route-card span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.reader-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  margin-top: 20px;
}

.toc {
  position: sticky;
  top: 88px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.92);
  box-shadow: 0 10px 32px rgba(30, 36, 32, 0.06);
}

.toc strong {
  display: block;
  margin-bottom: 12px;
  color: var(--ink);
  font-size: 14px;
}

.toc a {
  display: block;
  padding: 8px 9px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 13px;
}

.toc a:hover {
  color: var(--ink);
  background: var(--soft);
  text-decoration: none;
}

.reader {
  min-width: 0;
  display: grid;
  gap: 18px;
}

.lesson-section {
  overflow: hidden;
}

.section-inner {
  padding: 34px;
}

.section-head {
  margin-bottom: 22px;
}

.section-head h2 {
  margin: 8px 0 10px;
  font-size: 30px;
}

.section-head p {
  max-width: 72ch;
  color: var(--muted);
}

.prose {
  max-width: 840px;
}

.prose p {
  margin-top: 16px;
  font-size: 16px;
}

.prose h3 {
  margin: 28px 0 8px;
  font-size: 21px;
}

.mindmap,
.comparison,
.combo-flow,
.summary-grid,
.task-grid,
.case-grid,
.resource-grid {
  margin-top: 22px;
  display: grid;
  gap: 12px;
}

.mindmap {
  grid-template-columns: minmax(170px, 0.55fr) minmax(0, 1fr);
}

.mind-root {
  min-height: 230px;
  border-radius: 8px;
  color: white;
  background: var(--ink);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 22px;
}

.mind-root strong {
  font-size: 24px;
  line-height: 1.34;
}

.mind-branches {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mind-node,
.compare-panel,
.combo-step,
.summary-card,
.task-card,
.case-card,
.resource-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  padding: 18px;
}

.mind-node strong,
.compare-panel h3,
.combo-step strong,
.summary-card h3,
.task-card h3,
.case-card h3,
.resource-card h3 {
  display: block;
  margin: 0 0 6px;
  color: var(--ink);
}

.mind-node span,
.combo-step p,
.summary-card p,
.task-card p,
.case-card p,
.resource-card p {
  color: var(--muted);
  font-size: 14px;
}

.comparison,
.task-grid,
.case-grid,
.resource-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.compare-panel.tool {
  background: var(--clay-soft);
}

.compare-panel.mind {
  background: var(--green-soft);
}

.quote {
  margin-top: 22px;
  padding: 20px;
  border-left: 5px solid var(--teal);
  border-radius: 0 8px 8px 0;
  background: var(--green-soft);
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
}

.framework-table {
  width: 100%;
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  border-collapse: collapse;
  overflow: hidden;
  background: white;
}

.framework-table th,
.framework-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.framework-table th {
  color: var(--ink);
  background: var(--soft);
}

.framework-table tr:last-child td {
  border-bottom: 0;
}

.framework-table td:first-child {
  width: 110px;
  color: var(--teal);
  font-weight: 900;
}

.prompt-box {
  margin-top: 22px;
  padding: 20px;
  border-radius: 8px;
  color: #eef7f2;
  background: #17231f;
}

.prompt-box strong {
  display: block;
  color: white;
  margin-bottom: 12px;
}

pre {
  margin: 0;
  white-space: pre-wrap;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.74;
}

.role-grid {
  margin-top: 22px;
  display: grid;
  gap: 12px;
}

.role-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  overflow: hidden;
}

.role-card summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  color: var(--ink);
  font-weight: 900;
}

.role-card summary::-webkit-details-marker {
  display: none;
}

.role-tag {
  min-height: 40px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--teal);
  font-size: 15px;
}

.role-card:nth-child(2) .role-tag {
  background: var(--blue);
}

.role-card:nth-child(3) .role-tag {
  background: var(--clay);
}

.role-card:nth-child(4) .role-tag {
  background: var(--gold);
}

.role-card:nth-child(5) .role-tag {
  background: var(--ink);
}

.role-desc {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

.role-body {
  padding: 0 20px 20px;
  border-top: 1px solid var(--line);
  background: white;
}

.role-body p {
  margin-top: 16px;
}

.prompt-mini {
  margin-top: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.combo-flow,
.summary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.combo-step {
  background: var(--blue-soft);
}

.summary-card span {
  display: block;
  margin-bottom: 16px;
  color: var(--clay);
  font-size: 30px;
  font-weight: 900;
  line-height: 1;
}

.task-card.required {
  background: var(--green-soft);
}

.task-card.optional {
  background: var(--gold-soft);
}

.error-panel {
  width: min(calc(100% - 32px), 720px);
  margin: 64px auto;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.footer-note {
  margin: 18px 0 0;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 1040px) {
  .login-layout,
  .dashboard-grid,
  .lesson-hero,
  .reader-layout,
  .mindmap {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
  }
}

@media (max-width: 740px) {
  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 10px 0;
  }

  .brand span {
    white-space: normal;
  }

  .login-hero,
  .login-panel,
  .dashboard-panel,
  .lesson-intro,
  .lesson-map,
  .section-inner {
    padding: 22px;
  }

  .login-hero h1,
  .lesson-intro h1 {
    font-size: 34px;
  }

  .scope-grid,
  .stat-grid,
  .catalog-card,
  .mind-branches,
  .comparison,
  .combo-flow,
  .summary-grid,
  .task-grid,
  .case-grid,
  .resource-grid,
  .role-card summary {
    grid-template-columns: 1fr;
  }

  .framework-table {
    display: block;
    overflow-x: auto;
  }
}