:root {
  --ink: #17231f;
  --muted: #66736d;
  --paper: #f4f6f2;
  --surface: #ffffff;
  --line: #dfe5df;
  --green: #1b6b50;
  --green-dark: #114b39;
  --green-soft: #e7f3ed;
  --amber: #b36a16;
  --amber-soft: #fff4e2;
  --blue: #295f91;
  --blue-soft: #eaf2fa;
  --danger: #a5423a;
  --radius: 16px;
  --shadow: 0 16px 44px rgba(29, 48, 39, .08);
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif; line-height: 1.5; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button, label { -webkit-tap-highlight-color: transparent; }

.topbar { height: 72px; padding: 0 max(24px, calc((100vw - 1180px) / 2)); display: flex; align-items: center; justify-content: space-between; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; backdrop-filter: blur(10px); }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; color: white; background: var(--green); font-weight: 800; font-family: Georgia, serif; font-size: 23px; }
.brand strong, .brand small { display: block; line-height: 1.05; }
.brand strong { letter-spacing: .08em; }
.brand small { color: var(--muted); margin-top: 5px; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.topbar nav { display: flex; gap: 8px; }
.topbar nav a { padding: 9px 13px; border-radius: 9px; color: var(--muted); font-size: 14px; }
.topbar nav a:hover { color: var(--green-dark); background: var(--green-soft); }
.page-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 42px 0 72px; }

.eyebrow, .section-kicker { margin: 0 0 12px; color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .16em; }
h1, h2, p { margin-top: 0; }
h1 { font-family: Georgia, "Microsoft YaHei", serif; font-size: clamp(36px, 5vw, 60px); line-height: 1.08; letter-spacing: -.035em; margin-bottom: 20px; }
h2 { font-size: 22px; margin-bottom: 8px; }
.lead { font-size: 18px; color: var(--muted); max-width: 610px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }

.intro-grid { min-height: calc(100vh - 190px); display: grid; grid-template-columns: 1.25fr .75fr; gap: 80px; align-items: center; }
.intro-copy { padding: 40px 0; }
.principle-list { margin-top: 42px; display: flex; flex-wrap: wrap; gap: 12px 22px; color: var(--muted); font-size: 14px; }
.principle-list span { display: flex; align-items: center; gap: 8px; }
.principle-list b { color: var(--green); font-size: 11px; }
.identity-card { padding: 34px; }
.identity-card h2 { font-size: 28px; margin-bottom: 28px; }
.field-label, fieldset legend { display: block; font-weight: 700; font-size: 14px; margin-bottom: 9px; }
input[type="text"], input[type="number"], select { width: 100%; border: 1px solid #cfd8d1; background: white; border-radius: 10px; padding: 12px 14px; color: var(--ink); outline: none; }
input:focus, select:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(27,107,80,.12); }
fieldset { padding: 0; border: 0; margin: 24px 0; }
.segmented { display: grid; gap: 8px; }
.segmented.two { grid-template-columns: repeat(2, 1fr); }
.segmented.three { grid-template-columns: repeat(3, 1fr); }
.segmented label input, .choice-card input, .action-choice input { position: absolute; opacity: 0; pointer-events: none; }
.segmented label span { display: grid; place-items: center; min-height: 46px; border: 1px solid #cfd8d1; border-radius: 10px; background: white; cursor: pointer; font-weight: 700; }
.segmented label input:checked + span { color: var(--green-dark); border-color: var(--green); background: var(--green-soft); box-shadow: inset 0 0 0 1px var(--green); }
.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 10px; padding: 0 20px; font-weight: 750; cursor: pointer; }
.button.primary { color: white; background: var(--green); }
.button.primary:hover { background: var(--green-dark); }
.button.secondary { color: var(--green-dark); background: white; border: 1px solid var(--green); }
.button.full { width: 100%; }
.fine-print { color: var(--muted); font-size: 12px; text-align: center; margin: 14px 0 0; }

.message-stack { position: fixed; right: 24px; top: 88px; z-index: 50; display: grid; gap: 8px; }
.message { max-width: 440px; padding: 12px 16px; background: white; border-left: 4px solid var(--blue); border-radius: 9px; box-shadow: var(--shadow); }
.message.error { border-color: var(--danger); }
.message.success { border-color: var(--green); }

.workspace-head, .study-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 28px; margin-bottom: 30px; }
.workspace-head h1 { margin-bottom: 8px; font-size: 46px; }
.workspace-head p { color: var(--muted); margin-bottom: 0; }
.reader-chip { min-width: 210px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: white; display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; }
.reader-chip span { font-weight: 800; }
.reader-chip b { color: var(--green); font-size: 12px; text-transform: uppercase; }
.reader-chip form { grid-column: 1 / -1; }
.text-button { border: 0; padding: 3px 0 0; background: none; color: var(--muted); font-size: 12px; cursor: pointer; }
.jump-card { box-shadow: none; padding: 18px 20px; display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 24px; }
.progress-strip { display: grid; grid-template-columns: 110px 110px 110px 1fr; gap: 10px; align-items: stretch; margin-bottom: 16px; }
.progress-strip > div { padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: white; }
.progress-strip span, .progress-strip strong { display: block; }
.progress-strip span { color: var(--muted); font-size: 11px; }
.progress-strip strong { margin-top: 2px; font-family: Georgia, serif; font-size: 25px; }
.progress-strip .finish-area { padding: 0; border: 0; background: transparent; }
.finish-button { width: 100%; height: 100%; min-height: 64px; color: white; background: var(--green-dark); }
.finish-button.disabled { color: #87928d; background: #e4e8e5; cursor: not-allowed; }
.jump-form label { display: block; font-size: 13px; font-weight: 750; margin-bottom: 7px; }
.jump-form > div { display: flex; gap: 8px; }
.jump-form input { width: 150px; }
.legend { display: flex; gap: 16px; color: var(--muted); font-size: 12px; padding-bottom: 9px; }
.legend span { display: flex; align-items: center; gap: 6px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #cbd4cf; }
.dot.active { background: var(--amber); }
.dot.done { background: var(--green); }
.case-grid { display: grid; grid-template-columns: repeat(10, 1fr); gap: 10px; }
.case-tile { min-height: 94px; padding: 12px; background: white; border: 1px solid var(--line); border-radius: 12px; display: flex; flex-direction: column; justify-content: space-between; transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease; }
.case-tile:hover { transform: translateY(-2px); border-color: var(--green); box-shadow: 0 9px 22px rgba(27,107,80,.09); }
.case-tile small { color: var(--muted); font-size: 9px; letter-spacing: .12em; }
.case-tile strong { font-size: 20px; }
.case-tile span { color: var(--muted); font-size: 10px; }
.case-tile.phase1, .case-tile.phase2 { border-color: #e9c68e; background: var(--amber-soft); }
.case-tile.complete { border-color: #a9cfbb; background: var(--green-soft); }

.study-head { align-items: center; margin-bottom: 22px; }
.back-link { color: var(--muted); font-size: 14px; }
.case-title { display: flex; flex-direction: column; align-items: center; line-height: 1; }
.case-title span { font-size: 10px; letter-spacing: .18em; color: var(--muted); }
.case-title strong { font-family: Georgia, serif; font-size: 30px; margin-top: 6px; }
.phase-track { width: 330px; display: grid; grid-template-columns: 28px 1fr 28px; align-items: center; position: relative; }
.phase-track > span { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; border: 1px solid #bac6bf; background: white; font-size: 12px; font-weight: 800; z-index: 1; }
.phase-track > span.done { color: white; border-color: var(--green); background: var(--green); }
.phase-track > span.current { color: white; border-color: var(--blue); background: var(--blue); }
.phase-track i { height: 1px; background: #bac6bf; }
.phase-track small { margin-top: 7px; text-align: center; color: var(--muted); font-size: 10px; }
.phase-track small:nth-of-type(1) { grid-column: 1 / 2; }
.phase-track small:nth-of-type(2) { grid-column: 3 / 4; }
.locked-note, .plain-note { display: flex; gap: 16px; align-items: center; padding: 16px 20px; margin-bottom: 16px; border-radius: 12px; }
.locked-note { color: #234e73; background: var(--blue-soft); border: 1px solid #c6dbed; }
.plain-note { color: #71501f; background: var(--amber-soft); border: 1px solid #efd4aa; }
.locked-note span, .plain-note span { font-size: 14px; }
.study-form { background: white; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.form-section { display: grid; grid-template-columns: 68px 1fr; padding: 32px 38px 34px 0; border-bottom: 1px solid var(--line); }
.section-number { color: #9caaa2; font-size: 11px; font-weight: 800; letter-spacing: .08em; text-align: center; padding-top: 8px; }
.question-head { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.question-head h2 { margin-bottom: 4px; }
.question-head p { color: var(--muted); font-size: 13px; margin-bottom: 0; }
.required { align-self: start; padding: 4px 7px; border-radius: 6px; color: var(--green-dark); background: var(--green-soft); font-size: 10px; font-weight: 800; }
.normal-choice { margin-bottom: 10px; }
.diagnosis-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.choice-card span { min-height: 49px; padding: 10px 13px; display: flex; align-items: center; border: 1px solid #d7dfda; border-radius: 10px; background: white; cursor: pointer; font-size: 14px; font-weight: 650; }
.choice-card span::before { content: ""; width: 15px; height: 15px; border: 1px solid #afbbb4; border-radius: 4px; margin-right: 10px; flex: 0 0 auto; }
.choice-card input:checked + span { color: var(--green-dark); border-color: var(--green); background: var(--green-soft); }
.choice-card input:checked + span::before { border-color: var(--green); background: var(--green); box-shadow: inset 0 0 0 3px var(--green-soft); }
.choice-card input:disabled + span { opacity: .46; cursor: not-allowed; }
.choice-card.normal span { color: var(--blue); }
.other-wrap, .test-panel { display: none; margin-top: 14px; padding: 15px; border-radius: 10px; background: #f7f9f7; }
.other-wrap.visible, .test-panel.visible { display: block; }
.other-wrap label { display: block; font-weight: 700; font-size: 12px; margin-bottom: 6px; }
.action-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; }
.action-list.escalation-list { grid-template-columns: repeat(3, 1fr); }
.action-choice span { min-height: 58px; padding: 12px 14px; display: flex; align-items: center; border: 1px solid #d7dfda; border-radius: 10px; cursor: pointer; }
.action-choice span::before { content: ""; width: 16px; height: 16px; margin-right: 11px; border: 1px solid #afbbb4; border-radius: 50%; flex: 0 0 auto; }
.action-choice input:checked + span { color: var(--green-dark); border-color: var(--green); background: var(--green-soft); }
.action-choice input:checked + span::before { border: 5px solid var(--green); }
.test-panel p { margin-bottom: 9px; font-size: 12px; font-weight: 750; }
.test-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }
.choice-card.compact span { min-height: 42px; font-size: 12px; }
.accent-section { background: #fbfdfc; }
.recommendation-row { display: grid; grid-template-columns: 64px minmax(220px, 1fr) 1.2fr; gap: 10px; align-items: center; margin-top: 10px; }
.rec-index { color: var(--muted); font-size: 12px; font-weight: 750; }
.segmented.mini label span { min-height: 42px; font-size: 12px; }
.form-footer { padding: 22px 38px; display: flex; justify-content: space-between; align-items: center; gap: 22px; background: #f7f9f7; }
.form-footer strong, .form-footer span { display: block; }
.form-footer strong { font-size: 13px; }
.form-footer span { color: var(--muted); font-size: 11px; margin-top: 3px; }
.overall-head { max-width: 760px; margin: 0 auto 28px; text-align: center; }
.overall-head .back-link { display: block; margin-bottom: 34px; text-align: left; }
.overall-head h1 { font-size: 48px; margin-bottom: 10px; }
.overall-head > p:last-child { color: var(--muted); }
.overall-form { max-width: 860px; margin: 0 auto; }
.final-confirm { padding: 22px 38px; border-bottom: 1px solid var(--line); background: var(--amber-soft); }
.confirm-choice { display: flex; align-items: flex-start; gap: 11px; font-size: 13px; font-weight: 650; cursor: pointer; }
.confirm-choice input { margin-top: 4px; accent-color: var(--green); }
.completion-shell { min-height: calc(100vh - 200px); display: flex; align-items: center; justify-content: center; flex-direction: column; text-align: center; }
.completion-mark { width: 68px; height: 68px; display: grid; place-items: center; margin-bottom: 24px; border-radius: 50%; color: white; background: var(--green); font-size: 32px; font-weight: 800; box-shadow: 0 14px 32px rgba(27,107,80,.22); }
.completion-shell h1 { font-size: 48px; margin-bottom: 12px; }
.completion-shell > p:not(.eyebrow) { color: var(--muted); }
.completion-actions, .export-actions { display: flex; gap: 10px; align-items: center; }
.completion-actions { margin-top: 24px; }
.completion-actions form { margin: 0; }

.results-head { align-items: center; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.metric-grid.five-metrics { grid-template-columns: repeat(5, 1fr); }
.metric { padding: 20px; background: white; border: 1px solid var(--line); border-radius: 14px; }
.metric span, .metric small { display: block; color: var(--muted); }
.metric span { font-size: 12px; font-weight: 700; }
.metric strong { display: block; font-family: Georgia, serif; font-size: 34px; margin: 8px 0 3px; }
.metric small { font-size: 10px; }
.table-card { overflow: hidden; box-shadow: none; }
.table-title { padding: 20px 22px 10px; }
.table-title h2 { margin-bottom: 3px; }
.table-title p { color: var(--muted); font-size: 12px; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 13px 20px; text-align: left; border-top: 1px solid var(--line); font-size: 13px; white-space: nowrap; }
th { color: var(--muted); background: #f8faf8; font-size: 10px; letter-spacing: .04em; text-transform: uppercase; }
.status-pill { display: inline-block; padding: 4px 8px; border-radius: 99px; color: var(--amber); background: var(--amber-soft); font-size: 10px; font-weight: 750; }
.status-pill.complete { color: var(--green-dark); background: var(--green-soft); }
.empty-row { padding: 42px; color: var(--muted); text-align: center; }
.results-section { margin-bottom: 18px; }

@media (max-width: 900px) {
  .intro-grid { grid-template-columns: 1fr; gap: 12px; }
  .intro-copy { padding-bottom: 10px; }
  .case-grid { grid-template-columns: repeat(5, 1fr); }
  .progress-strip { grid-template-columns: repeat(3, 1fr); }
  .progress-strip .finish-area { grid-column: 1 / -1; }
  .diagnosis-grid { grid-template-columns: repeat(2, 1fr); }
  .test-grid { grid-template-columns: repeat(3, 1fr); }
  .recommendation-row { grid-template-columns: 60px 1fr; }
  .recommendation-row .segmented { grid-column: 2; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-grid.five-metrics { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .topbar { padding: 0 16px; }
  .topbar nav a:first-child { display: none; }
  .page-shell { width: min(100% - 24px, 1180px); padding-top: 24px; }
  .workspace-head, .study-head { align-items: stretch; flex-direction: column; }
  .reader-chip { width: 100%; }
  .jump-card { align-items: stretch; flex-direction: column; }
  .progress-strip { grid-template-columns: repeat(3, 1fr); }
  .jump-form > div, .jump-form input { width: 100%; }
  .legend { flex-wrap: wrap; }
  .case-grid { grid-template-columns: repeat(4, 1fr); gap: 7px; }
  .case-tile { min-height: 84px; padding: 10px; }
  .phase-track { width: 100%; }
  .locked-note, .plain-note { align-items: flex-start; flex-direction: column; gap: 4px; }
  .form-section { grid-template-columns: 42px 1fr; padding: 26px 16px 28px 0; }
  .diagnosis-grid, .action-list { grid-template-columns: 1fr; }
  .action-list.escalation-list { grid-template-columns: 1fr; }
  .test-grid { grid-template-columns: repeat(2, 1fr); }
  .recommendation-row { grid-template-columns: 1fr; padding: 14px 0; border-top: 1px solid var(--line); }
  .recommendation-row .segmented { grid-column: 1; }
  .form-footer { align-items: stretch; flex-direction: column; padding: 20px; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .export-actions { width: 100%; align-items: stretch; flex-direction: column; }
}