:root {
  --ink: #172938;
  --muted: #697c89;
  --paper: #eef3f7;
  --surface: #ffffff;
  --line: #d7e0e7;
  --navy: #102f4b;
  --navy-deep: #0a2439;
  --blue: #2d6faa;
  --green: #2d8064;
  --amber: #b66b15;
  --red: #b33b35;
  --purple: #735697;
  --purple-deep: #553d74;
  --purple-soft: #f2edf7;
  --teal: #2b7d83;
  --shadow: 0 14px 36px rgba(18, 47, 72, 0.08);
  color-scheme: light;
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--paper); }
body { min-height: 100vh; margin: 0; color: var(--ink); background: var(--paper); }
button, input, select { font: inherit; }
button, select { cursor: pointer; }
a { color: inherit; }
[hidden] { display: none !important; }

.appSidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 20;
  display: flex;
  width: 248px;
  flex-direction: column;
  color: #ecf4f8;
  background: var(--navy-deep);
  box-shadow: 12px 0 34px rgba(8, 35, 55, 0.16);
}

.brand { display: grid; gap: 5px; padding: 31px 29px 28px; border-bottom: 1px solid rgba(255,255,255,.12); text-decoration: none; }
.brand strong { font-family: "Songti SC", SimSun, serif; font-size: 26px; letter-spacing: .18em; }
.brand span { color: #aebfca; font-size: 12px; letter-spacing: .27em; }
.appSidebar nav { display: grid; gap: 7px; padding: 26px 15px; }
.appSidebar nav a { display: flex; align-items: center; gap: 13px; padding: 13px 14px; color: #b9c8d1; border: 1px solid transparent; border-radius: 7px; font-size: 14px; text-decoration: none; }
.appSidebar nav a span { width: 20px; color: #718da0; font-family: Georgia, serif; font-size: 10px; }
.appSidebar nav a:hover { color: #fff; background: rgba(255,255,255,.06); }
.appSidebar nav a.active { color: #fff; border-color: rgba(177,147,198,.35); background: #5f477e; }
.appSidebar nav a.active span { color: #dac8e7; }
.sidebarNotice { display: grid; gap: 6px; margin: auto 20px 22px; padding: 15px; border: 1px solid rgba(255,255,255,.13); background: rgba(255,255,255,.045); }
.sidebarNotice b { font-size: 12px; font-weight: 600; }
.sidebarNotice span { color: #92a8b6; font-size: 10px; line-height: 1.6; }

.appCanvas { min-height: 100vh; margin-left: 248px; }
.topbar { display: flex; min-height: 108px; align-items: center; justify-content: space-between; gap: 30px; padding: 22px clamp(24px, 4vw, 54px); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.94); }
.eyebrow { margin: 0 0 6px; color: var(--purple); font-family: Georgia, serif; font-size: 10px; letter-spacing: .2em; }
.topbar h1 { margin: 0; font-family: "Songti SC", SimSun, serif; font-size: 27px; font-weight: 600; letter-spacing: .05em; }
.subhead { margin: 7px 0 0; color: var(--muted); font-size: 12px; }
.topbarMeta { display: flex; align-items: center; gap: 16px; color: var(--muted); font-size: 11px; white-space: nowrap; }
.topbarMeta a { padding-left: 16px; color: var(--ink); border-left: 1px solid var(--line); text-decoration: none; }
.previewBadge { padding: 4px 9px; color: #77500e; border: 1px solid #e2c78d; border-radius: 999px; background: #fff6df; font-size: 10px; font-weight: 700; letter-spacing: .08em; }

.mainContent { width: min(1540px, 100%); margin: 0 auto; padding: 26px clamp(22px, 3.6vw, 48px) 40px; }
.overviewBand { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 36px; align-items: center; padding: 29px 32px; color: #f4f8fb; background: linear-gradient(112deg, #102f4b, #263750 64%, #5a4475); box-shadow: var(--shadow); }
.overviewBand .eyebrow { color: #cdb4df; }
.overviewBand h2 { margin: 0 0 9px; font-family: "Songti SC", SimSun, serif; font-size: clamp(23px, 2.2vw, 32px); font-weight: 600; letter-spacing: .04em; }
.overviewBand p:last-child { max-width: 820px; margin: 0; color: #c3d0d8; font-size: 12px; line-height: 1.8; }
.overviewRule { display: grid; gap: 7px; padding: 16px 0 16px 24px; border-left: 1px solid rgba(255,255,255,.16); }
.overviewRule b { color: #d8cae3; font-size: 11px; font-weight: 500; }
.overviewRule span { color: #f0bd61; font-family: Georgia, "Songti SC", serif; font-size: 22px; }
.overviewRule small { color: #b7c5cf; font-size: 10px; line-height: 1.55; }

.metricGrid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: solid var(--line); border-width: 0 1px 1px 0; background: var(--surface); box-shadow: var(--shadow); }
.metricGrid article { position: relative; display: grid; min-height: 118px; align-content: center; gap: 7px; padding: 20px 23px; border: solid var(--line); border-width: 1px 0 0 1px; }
.metricGrid article::before { position: absolute; top: -1px; left: 22px; width: 38px; height: 3px; content: ""; background: var(--blue); }
.metricGrid article:nth-child(2)::before { background: var(--green); }
.metricGrid article:nth-child(3)::before { background: var(--purple); }
.metricGrid article:nth-child(4)::before { background: var(--amber); }
.metricGrid span { color: var(--muted); font-size: 11px; }
.metricGrid strong { font-family: Georgia, "Songti SC", serif; font-size: 27px; font-weight: 500; }
.metricGrid small { color: #93a1aa; font-size: 10px; }

.workflowPanel, .contentPanel, .reviewRail section { border: 1px solid var(--line); background: var(--surface); box-shadow: 0 10px 28px rgba(18,47,72,.055); }
.workflowPanel { margin-top: 20px; }
.workflowPanel > header { display: flex; align-items: end; justify-content: space-between; gap: 24px; padding: 17px 20px 14px; border-bottom: 1px solid var(--line); }
.workflowPanel h2, .panelIntro h2, .reviewRail h2 { margin: 0; font-family: "Songti SC", SimSun, serif; font-weight: 600; }
.workflowPanel h2 { font-size: 18px; }
.workflowPanel > header > p { margin: 0; color: var(--muted); font-size: 10px; }
.workflowSteps { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 0; padding: 0; list-style: none; }
.workflowSteps li { position: relative; display: grid; min-height: 112px; align-content: center; gap: 7px; padding: 18px 22px; border-right: 1px solid var(--line); }
.workflowSteps li:last-child { border-right: 0; }
.workflowSteps li:not(:last-child)::after { position: absolute; top: 50%; right: -5px; z-index: 2; width: 9px; height: 9px; content: ""; border-top: 1px solid #9baab4; border-right: 1px solid #9baab4; background: #fff; transform: rotate(45deg) translateY(-50%); }
.workflowSteps b { color: var(--purple); font-family: Georgia, serif; font-size: 11px; font-weight: 500; }
.workflowSteps span { font-size: 12px; font-weight: 650; }
.workflowSteps small { color: var(--muted); font-size: 9px; line-height: 1.55; }
.workflowSteps li:nth-child(2) b { color: var(--blue); }
.workflowSteps li:nth-child(3) b { color: var(--teal); }
.workflowSteps li:nth-child(4) b { color: var(--amber); }
.workflowSteps li:nth-child(5) b { color: var(--green); }

.anonymousView { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(290px, .85fr) auto; gap: 22px 34px; align-items: center; margin-top: 18px; padding: 25px 28px; border: 1px solid var(--line); background: var(--surface); box-shadow: 0 10px 28px rgba(18,47,72,.055); }
.anonymousView h2 { margin: 0 0 8px; font-family: "Songti SC", SimSun, serif; font-size: 21px; font-weight: 600; }
.anonymousView > div > p:last-child { margin: 0; color: var(--muted); font-size: 10px; line-height: 1.7; }
.anonymousRules { display: grid; border: solid var(--line); border-width: 1px 0 0 1px; }
.anonymousRules p { display: grid; grid-template-columns: 88px 1fr; gap: 10px; margin: 0; padding: 10px 12px; border: solid var(--line); border-width: 0 1px 1px 0; }
.anonymousRules b { color: var(--purple); font-size: 9px; }
.anonymousRules span { color: var(--muted); font-size: 9px; }
.anonymousView > button { min-height: 42px; padding: 10px 16px; color: #fff; border: 1px solid var(--purple); border-radius: 4px; background: var(--purple); font-size: 10px; font-weight: 650; }
.anonymousView > small { grid-column: 1 / -1; color: #8b5a24; font-size: 9px; line-height: 1.55; }

.learningWorkspace { display: grid; grid-template-columns: minmax(0, 1fr) 294px; gap: 18px; margin-top: 18px; }
.contentPanel { min-width: 0; overflow: hidden; }
.contentToolbar { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 13px 16px; border-bottom: 1px solid var(--line); }
.learningTabs { display: flex; gap: 5px; padding: 4px; background: #eef3f7; }
.learningTabs button { min-height: 36px; padding: 8px 13px; color: var(--muted); border: 0; border-radius: 4px; background: transparent; font-size: 11px; }
.learningTabs button.active { color: #fff; background: var(--purple-deep); }
.statusFilter { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 10px; }
.statusFilter select { min-height: 36px; padding: 7px 29px 7px 10px; color: var(--ink); border: 1px solid #cbd8e1; border-radius: 4px; background: #fff; }

.tabPanel { min-height: 520px; padding: 20px; }
.panelIntro { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 17px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.panelIntro > div > span { display: block; margin-bottom: 5px; color: var(--purple); font-size: 9px; font-weight: 700; letter-spacing: .12em; }
.panelIntro h2 { font-size: 19px; }
.panelIntro p { max-width: 420px; margin: 0; color: var(--muted); font-size: 10px; line-height: 1.65; text-align: right; }
.knowledgeList, .caseList { display: grid; gap: 12px; }
.knowledgeCard, .caseCard { border: 1px solid var(--line); background: #fff; }
.knowledgeCard { display: grid; grid-template-columns: minmax(0, 1fr) 202px; }
.knowledgeBody { display: grid; gap: 10px; padding: 17px 18px; }
.cardHeading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.cardHeading > div { display: grid; gap: 4px; }
.cardHeading small { color: var(--purple); font-size: 9px; letter-spacing: .08em; }
.cardHeading h3 { margin: 0; font-size: 13px; }
.statusPill { flex: 0 0 auto; padding: 4px 8px; color: var(--status-color); border: 1px solid color-mix(in srgb, var(--status-color) 32%, white); border-radius: 999px; background: color-mix(in srgb, var(--status-color) 9%, white); font-size: 9px; font-weight: 700; }
.metaLine { display: flex; flex-wrap: wrap; gap: 8px 16px; color: var(--muted); font-size: 9px; }
.metaLine b { color: #475d6b; font-weight: 600; }
.publishCell { display: grid; align-content: center; gap: 8px; padding: 16px; border-left: 1px solid var(--line); background: #f8fafb; }
.publishCell button, .previewControl button { min-height: 36px; padding: 8px 11px; color: #fff; border: 1px solid var(--purple); border-radius: 4px; background: var(--purple); font-size: 10px; font-weight: 650; }
.publishCell button:hover, .previewControl button:hover { background: var(--purple-deep); }
.publishCell small { color: var(--muted); font-size: 9px; line-height: 1.5; }
.publishCell small.blocked { color: var(--red); }
.publishedButton { color: var(--green) !important; border-color: #acd1c1 !important; background: #edf8f3 !important; }

.caseCard { padding: 18px; border-top: 3px solid var(--case-color, var(--green)); }
.caseCard .cardHeading { margin-bottom: 14px; }
.caseDetails { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: solid var(--line); border-width: 1px 0 0 1px; }
.caseDetails p { display: grid; gap: 5px; margin: 0; padding: 12px 13px; border: solid var(--line); border-width: 0 1px 1px 0; }
.caseDetails p.wide { grid-column: 1 / -1; }
.caseDetails b { color: var(--muted); font-size: 9px; font-weight: 500; }
.caseDetails span { font-size: 10px; line-height: 1.55; }
.caseFoot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 13px; }
.caseFoot p { margin: 0; color: var(--muted); font-size: 9px; }
.caseFoot button { min-height: 34px; padding: 7px 12px; color: #fff; border: 0; border-radius: 4px; background: var(--purple); font-size: 10px; }

.topicGrid, .growthGrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.topicCard, .growthCard { display: grid; gap: 13px; padding: 18px; border: 1px solid var(--line); background: #fff; }
.topicCard { border-top: 3px solid var(--topic-color, var(--purple)); }
.topicCard header, .growthCard header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.topicCard h3, .growthCard h3 { margin: 0; font-size: 13px; }
.topicCard header span, .growthCard header span { color: var(--muted); font-size: 9px; }
.topicCard > p, .growthCard > p { margin: 0; color: var(--muted); font-size: 10px; line-height: 1.65; }
.topicMeta, .growthStats { display: flex; flex-wrap: wrap; gap: 7px; }
.topicMeta span, .specialtyTag { padding: 4px 7px; color: #4d6370; border: 1px solid #d6e0e6; border-radius: 999px; background: #f6f9fa; font-size: 9px; }
.progressLine { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; }
.progressTrack { height: 6px; overflow: hidden; border-radius: 999px; background: #e8edf1; }
.progressTrack i { display: block; width: var(--progress); height: 100%; border-radius: inherit; background: var(--progress-color, var(--purple)); }
.progressLine b { color: var(--purple); font-family: Georgia, serif; font-size: 11px; font-weight: 500; }
.growthCard { border-left: 3px solid var(--blue); }
.specialtyList { display: flex; flex-wrap: wrap; gap: 6px; }
.growthStats { display: grid; grid-template-columns: repeat(3, 1fr); padding-top: 11px; border-top: 1px solid var(--line); }
.growthStats p { display: grid; gap: 3px; margin: 0; text-align: center; }
.growthStats strong { color: var(--green); font-family: Georgia, serif; font-size: 17px; font-weight: 500; }
.growthStats span { color: var(--muted); font-size: 8px; }
.emptyState { display: grid; min-height: 260px; place-items: center; color: var(--muted); border: 1px dashed #cbd7df; background: #fafbfc; font-size: 11px; }

.reviewRail { display: grid; align-content: start; gap: 18px; }
.reviewRail section { overflow: hidden; }
.reviewRail header { padding: 17px 18px 13px; border-bottom: 1px solid var(--line); }
.reviewRail header span { display: block; margin-bottom: 4px; color: var(--purple); font-size: 9px; font-weight: 700; letter-spacing: .1em; }
.reviewRail h2 { font-size: 17px; }
.gateList { display: grid; margin: 0; padding: 0; list-style: none; }
.gateList li { display: grid; gap: 5px; padding: 14px 17px; border-bottom: 1px solid #e8eef2; }
.gateList li:last-child { border-bottom: 0; }
.gateList b { font-size: 10px; }
.gateList span { color: var(--muted); font-size: 9px; line-height: 1.55; }
.boundaryCard p, .previewControl p { margin: 0; padding: 14px 17px; color: var(--muted); font-size: 9px; line-height: 1.65; }
.boundaryCard p + p { padding-top: 0; }
.boundaryCard b { color: var(--ink); }
.previewControl button { width: calc(100% - 34px); margin: 0 17px 9px; }
.previewControl button:last-child { margin-bottom: 17px; }
.previewControl .secondaryButton { color: var(--purple); background: #fff; }
.previewControl p.success { color: var(--green); }
.previewControl p.error { color: var(--red); }
.previewControl .validationWarnings { margin: 0 17px 12px; padding: 10px 11px; color: #8b5a24; border: 1px solid #e2c78d; background: #fff8e8; }

@media (max-width: 1180px) {
  .anonymousView { grid-template-columns: 1fr 1fr; }
  .anonymousView > button { justify-self: start; }
  .learningWorkspace { grid-template-columns: 1fr; }
  .reviewRail { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .metricGrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  .workflowSteps { grid-template-columns: 1fr; }
  .workflowSteps li { min-height: 82px; border-right: 0; border-bottom: 1px solid var(--line); }
  .workflowSteps li:last-child { border-bottom: 0; }
  .workflowSteps li:not(:last-child)::after { top: auto; right: 50%; bottom: -5px; transform: rotate(135deg); }
}

@media (max-width: 900px) {
  .appSidebar { position: static; width: auto; }
  .brand { padding: 20px 24px; }
  .appSidebar nav { display: flex; overflow-x: auto; padding: 10px 15px 14px; }
  .appSidebar nav a { flex: 0 0 auto; padding: 10px 12px; }
  .sidebarNotice { display: none; }
  .appCanvas { margin-left: 0; }
  .overviewBand { grid-template-columns: 1fr; }
  .overviewRule { padding: 16px 0 0; border-top: 1px solid rgba(255,255,255,.16); border-left: 0; }
}

@media (max-width: 720px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .topbarMeta { flex-wrap: wrap; white-space: normal; }
  .mainContent { padding-inline: 14px; }
  .metricGrid { grid-template-columns: 1fr; }
  .anonymousView { grid-template-columns: 1fr; }
  .anonymousView > small { grid-column: auto; }
  .workflowPanel > header, .panelIntro, .contentToolbar { align-items: stretch; flex-direction: column; }
  .panelIntro p { max-width: none; text-align: left; }
  .learningTabs { overflow-x: auto; }
  .learningTabs button { flex: 0 0 auto; }
  .statusFilter { justify-content: space-between; }
  .knowledgeCard { grid-template-columns: 1fr; }
  .publishCell { border-top: 1px solid var(--line); border-left: 0; }
  .caseDetails, .topicGrid, .growthGrid, .reviewRail { grid-template-columns: 1fr; }
  .caseDetails p.wide { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}