:root{--bg:#f4f3ee;--surface:#fff;--ink:#213632;--muted:#64716c;--line:#dfe4dd;--green:#164c46;--green-soft:#e6f0e9;--amber:#8d5a1f;--amber-soft:#fbf0dc;--red:#a13e34;--red-soft:#faece7;--radius:16px;font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;font-size:15px;line-height:1.65}button,input,select{font:inherit}button,a,input{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #af7929;outline-offset:4px}button{color:inherit}a{color:var(--green)}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-weight:600;letter-spacing:-.035em}h1{font-size:clamp(30px,3.8vw,48px);line-height:1.25;margin:14px 0}h2{font-size:25px;line-height:1.35;margin-bottom:8px}h3{font-size:18px;line-height:1.4;margin-bottom:8px}p{margin-bottom:0}small{font-size:12px}button{border:0}svg{display:block}button:disabled{opacity:.45}.skip-link{position:absolute;left:12px;top:-70px;z-index:10;background:white;padding:10px}.skip-link:focus{top:10px}
.app-header{height:94px;max-width:1456px;margin:auto;padding:0 48px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:600;font-size:18px;line-height:1.4;white-space:nowrap}.brand small{display:block;font-size:9px;font-weight:500;letter-spacing:.09em;margin-top:4px;color:var(--muted)}.brand-mark{width:38px;height:38px;background:var(--green);border-radius:12px;display:grid;place-items:center;color:white;font-size:32px;font-weight:300;line-height:1}.top-nav{display:flex;align-items:center;gap:6px}.top-nav button{background:transparent;padding:10px 16px;border-radius:9px;font-size:14px;color:var(--muted);min-height:44px;white-space:nowrap}.top-nav button.active{background:#e4e8df;color:var(--green);font-weight:600}.version-pill{font-size:11px;border:1px solid #ccd6ca;padding:6px 10px;border-radius:5px;white-space:nowrap;color:var(--muted)}
main{max-width:1360px;margin:auto;padding:0 48px}.hero{padding:48px 0 35px;display:flex;justify-content:space-between;gap:30px;align-items:center}.eyebrow{display:flex;align-items:center;gap:8px;color:var(--green);font-size:11px;letter-spacing:.1em;font-weight:600}.eyebrow>span{width:6px;height:6px;background:var(--green);border-radius:50%}.hero p{font-size:15px;color:var(--muted)}.hero-aside{padding-left:24px;border-left:1px solid #ced8cf;min-width:300px}.small-label{font-size:11px;color:var(--muted)}.hero-equation{font-size:21px;letter-spacing:.03em;margin:7px 0}.hero-equation span{font-size:16px;padding:0 12px;color:#9da99e}.hero-note{font-size:12px;color:var(--muted)}.teaching-strip{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#e9ebe2;border-radius:8px;font-size:12px;color:#5c6255;margin-bottom:28px}.teaching-badge{font-size:10px;font-weight:600;letter-spacing:.08em;white-space:nowrap;border:1px solid #bcc4b2;padding:2px 6px;border-radius:4px}
.assessment-layout{display:grid;grid-template-columns:176px minmax(0,1fr) 282px;gap:26px;align-items:start}.step-sidebar{position:sticky;top:22px}.sidebar-label{color:var(--muted);font-size:11px;letter-spacing:.08em;margin-bottom:13px}.step-list{display:flex;flex-direction:column;gap:6px}.step-button{display:flex;text-align:left;align-items:center;gap:12px;width:100%;background:transparent;padding:11px 8px;border-radius:10px;min-height:54px}.step-button .step-number{width:26px;flex:0 0 26px;height:26px;border-radius:50%;background:#e5e8e0;color:var(--muted);display:grid;place-items:center;font-size:11px;font-variant-numeric:tabular-nums}.step-button strong{display:block;font-size:13px;font-weight:500}.step-button small{display:block;font-size:10px;color:var(--muted);margin-top:1px}.step-button.active{background:var(--green);color:white}.step-button.active .step-number{background:#3c6a61;color:white}.step-button.active small{color:#c1d7c8}.step-button.complete:not(.active) .step-number{background:#d5e7d9;color:var(--green)}.sidebar-footer{border-top:1px solid var(--line);margin-top:20px;padding-top:16px;font-size:11px;color:var(--muted)}.new-session{display:block;text-align:left;border:1px solid #cdd5ca;background:transparent;border-radius:8px;padding:9px 11px;margin:12px 0;min-height:44px;font-size:12px;width:100%}.case-ribbon{display:flex;align-items:center;gap:8px;padding:10px 14px;border:1px solid #d7e3d6;background:#eef4ec;border-radius:9px;margin-bottom:15px;font-size:12px;flex-wrap:wrap}.case-ribbon button{background:transparent;text-decoration:underline;color:var(--green);margin-left:auto;font-size:11px;min-height:28px}.step-main{min-width:0}.section-heading{margin-bottom:20px}.section-heading .eyebrow{margin-bottom:9px}.section-heading p{font-size:13px;color:var(--muted)}.step-context{background:var(--amber-soft);border-left:3px solid #c79748;color:#73582e;border-radius:0 7px 7px 0;padding:12px 14px;font-size:12px;margin:0 0 18px}.step-context.info{background:var(--green-soft);color:var(--green);border-color:#74a485}
.field-card{padding:19px 20px;background:var(--surface);border:1px solid var(--line);border-radius:12px;margin:0 0 12px;min-width:0}.field-card legend{float:left;display:block;width:100%;padding:0;font-size:15px;font-weight:600;margin-bottom:3px}.field-card legend + *{clear:both}.field-hint{color:var(--muted);font-size:12px;margin-bottom:12px}.field-card .source-button{float:right;margin-top:9px}.field-card:after{content:'';display:block;clear:both}.choice-group{display:flex;gap:7px;flex-wrap:wrap}.choice{padding:8px 11px;min-height:40px;font-size:12px;border:1px solid #dce2da;background:#fafbf8;border-radius:7px;text-align:left;transition:background .15s,border-color .15s}.choice:hover{border-color:#8ba395;background:#eff4ee}.choice[aria-pressed=true]{border-color:var(--green);background:var(--green);color:white}.choice[aria-pressed=true].negative{background:var(--red);border-color:var(--red)}.choice[aria-pressed=true].uncertain{background:#806233;border-color:#806233}.source-button{background:transparent;font-size:11px;color:var(--muted);text-decoration:underline;text-underline-offset:3px;padding:2px 0;min-height:26px}.number-input{width:100%;max-width:240px;border:1px solid #cbd6cb;border-radius:8px;padding:10px 12px;background:#fcfdfb;color:var(--ink);font-size:16px;min-height:46px}.numeric-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.numeric-grid .field-card{margin-bottom:0}.numeric-grid .field-hint{min-height:40px}.numeric-grid{margin-bottom:12px}.input-invalid{border-color:var(--red)}.section-divider{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted);margin:24px 0 14px}.section-divider:after{content:'';height:1px;background:var(--line);flex:1}.test-group{margin-bottom:20px}.test-group .field-card+ .field-card{margin-top:-6px;background:#f9fbf7}.form-actions{display:flex;gap:12px;justify-content:space-between;margin-top:24px}.primary,.secondary{border-radius:9px;min-height:46px;padding:11px 18px;font-size:13px}.primary{background:var(--green);color:white}.primary:hover{background:#23665a}.secondary{background:white;border:1px solid #cdd6ca;color:var(--ink)}.secondary:hover{background:#edf2e9}.actions-note{font-size:11px;color:var(--muted);margin-top:10px}
.guidance{position:sticky;top:22px;min-width:0}.guidance-card{border:1px solid var(--line);background:#fbfcf8;border-radius:14px;overflow:hidden}.guidance-top{padding:20px 19px;background:#e9eee5;border-bottom:1px solid var(--line)}.guidance-top h3{font-size:17px;margin:9px 0 4px;letter-spacing:-.025em}.status-label{font-size:10px;letter-spacing:.08em;font-weight:600;display:inline-flex;gap:6px;align-items:center}.status-dot{width:6px;height:6px;display:inline-block;background:currentColor;border-radius:50%}.guidance-top.pending,.guidance-top.blocked,.guidance-top.review{background:var(--amber-soft);color:#72532a}.guidance-top.notmet{background:var(--red-soft);color:var(--red)}.guidance-top.ready{background:var(--green-soft);color:var(--green)}.guidance-body{padding:18px 19px}.guidance-body .small-label{display:block;margin-bottom:9px}.todo-list{padding:0;margin:0;list-style:none}.todo-list li{padding-bottom:11px;margin-bottom:11px;border-bottom:1px solid #e4e8df;font-size:12px}.todo-list li:last-child{border:0;padding-bottom:0;margin-bottom:0}.todo-list button{text-align:left;padding:0;background:transparent;font-size:12px;line-height:1.65;color:inherit}.todo-list button:hover{text-decoration:underline}.guidance-foot{margin-top:16px;font-size:11px;color:var(--muted);line-height:1.7}.progress-caption{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin:18px 0 7px}.progress-track{height:4px;border-radius:4px;background:#e0e6da;overflow:hidden}.progress-value{height:100%;background:#4c7e60;transition:width .2s}.route-note{padding:16px 0;border-bottom:1px solid var(--line);font-size:12px}.route-note span{display:block;color:var(--muted);font-size:10px;margin-bottom:3px}.at-preview{font-size:13px;background:#edf2e9;border:1px solid #d7e2d3;border-radius:9px;padding:16px;margin-bottom:18px}.at-preview strong{font-size:21px;display:block;font-weight:500;margin-top:4px;font-variant-numeric:tabular-nums}.at-preview small{display:block;color:var(--muted);margin-top:4px}
.summary-status{background:var(--green);padding:24px;color:white;border-radius:14px;margin-bottom:20px}.summary-status.pending,.summary-status.blocked,.summary-status.review{background:#71562e}.summary-status.notmet{background:#913f35}.summary-status .status-label{opacity:.8}.summary-status h2{font-size:23px;margin:10px 0}.summary-status p{font-size:12px;opacity:.88}.summary-actions{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0 24px}.summary-group{margin:18px 0;border:1px solid var(--line);border-radius:11px;background:white;padding:16px 18px}.summary-group h3{font-size:15px;margin-bottom:10px}.summary-row{display:flex;justify-content:space-between;gap:18px;border-top:1px solid #eef0e9;padding:8px 0;font-size:12px}.summary-row span:first-child{color:var(--muted)}.summary-row span:last-child{text-align:right;max-width:55%;overflow-wrap:anywhere}.summary-row.unanswered span:last-child{color:#9c7842}.summary-heading-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.summary-heading-row button{font-size:11px;background:transparent;text-decoration:underline;color:var(--green);min-height:28px}.summary-issues{padding:18px 20px;border:1px solid #e4d7c0;background:#fcf6e9;border-radius:11px}.summary-issues h3{font-size:15px}.summary-issues li{font-size:12px;margin-top:6px}.summary-issues ol{padding-left:18px;margin-bottom:0}.summary-issues button{background:none;text-align:left;font-size:12px;line-height:1.6;padding:2px;color:#74572e}
.view-header{display:flex;justify-content:space-between;align-items:end;margin:5px 0 24px;gap:20px}.view-header p{font-size:13px;color:var(--muted)}.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.case-card{background:white;border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;align-items:start}.case-card .card-index{font-family:Georgia,serif;font-size:38px;font-weight:400;color:#cad8c5;line-height:1;margin-bottom:20px}.case-meta{display:flex;gap:9px;align-items:center;font-size:10px;color:var(--muted);margin-bottom:12px}.case-meta span:first-child{background:#eaf0e5;padding:3px 7px;border-radius:4px;color:var(--green)}.case-card h3{font-size:19px;line-height:1.5}.case-card p{font-size:12px;color:var(--muted);margin-bottom:24px}.case-card button{margin-top:auto;width:100%;text-align:center}.case-detail{max-width:820px;margin:0 auto}.back-link{border:0;padding:8px 0;min-height:44px;background:transparent;color:var(--muted);font-size:12px}.case-story{background:var(--green);color:white;border-radius:16px;padding:30px;margin:10px 0 20px}.case-story .eyebrow{color:#b9d8c2}.case-story h2{margin-top:14px;font-size:28px}.case-story p{font-size:14px;color:#dbe8df}.quiz-question{margin:25px 0 16px;font-size:18px}.quiz-choices{display:grid;gap:10px}.quiz-choice{display:flex;align-items:center;gap:12px;background:white;border:1px solid var(--line);border-radius:10px;padding:16px;text-align:left;font-size:14px;min-height:55px}.quiz-choice .letter{color:var(--muted);font-size:12px}.quiz-choice[aria-pressed=true]{border-color:var(--green);background:#e7f0e4}.quiz-feedback{background:#e7f0e4;border:1px solid #c7dbbe;border-radius:11px;padding:20px;margin:18px 0;font-size:14px}.quiz-feedback.wrong{background:var(--amber-soft);border-color:#ebd6ae}.quiz-feedback strong{display:block;margin-bottom:6px}.case-load{margin:20px 0}.reference-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.reference-card{background:white;border:1px solid var(--line);border-radius:12px;padding:20px}.reference-card>summary{font-size:16px;font-weight:500;min-height:30px;cursor:pointer}.reference-card p{font-size:13px;color:var(--muted);margin-top:13px}.reference-page{display:block;font-size:11px;color:#809078;margin-top:5px}.reference-bottom{padding:25px 0;color:var(--muted);font-size:12px}.text-link{font-size:12px;text-underline-offset:3px}.site-footer{max-width:1360px;margin:50px auto 0;padding:24px 48px 30px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:10px}.site-footer button{background:transparent;color:var(--green);font-size:10px;text-decoration:underline;padding:3px 0 3px 6px;min-height:30px}
dialog{max-width:560px;width:calc(100% - 36px);border:1px solid var(--line);border-radius:17px;padding:28px;background:#fffef9;color:var(--ink);box-shadow:0 24px 100px #17352b30}dialog::backdrop{background:#142e2966;backdrop-filter:blur(3px)}.dialog-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.icon-button{background:transparent;font-size:27px;line-height:1;width:40px;height:40px;border-radius:50%;color:var(--muted)}.icon-button:hover{background:#edf0e7}.source-page{font-size:12px;color:var(--muted);margin-bottom:16px}#source-body{font-size:15px;line-height:1.9}.source-book{margin:24px 0 12px;padding-top:17px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:calc(100% - 36px);background:var(--ink);color:white;border-radius:9px;padding:12px 18px;font-size:12px;z-index:30;box-shadow:0 8px 24px #152e2820;opacity:0;pointer-events:none;transition:opacity .15s}#toast.visible{opacity:1}#print-content{display:none}
@media(min-width:1450px){.assessment-layout{grid-template-columns:190px minmax(0,1fr) 300px;gap:32px}}
@media(max-width:1120px){.app-header{padding:0 28px}.version-pill{display:none}main{padding:0 28px}.assessment-layout{grid-template-columns:155px minmax(0,1fr);gap:22px}.guidance{position:static;grid-column:2}.hero-aside{min-width:270px}.site-footer{padding:24px 28px}.case-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.app-header{height:auto;padding:18px 20px 12px;flex-wrap:wrap;gap:14px}.brand{font-size:16px}.brand-mark{width:33px;height:33px}.brand small{font-size:8px}.top-nav{width:100%;justify-content:space-between}.top-nav button{flex:1;padding:8px 12px}.hero{padding:28px 0 24px}.hero-aside{display:none}.hero p{font-size:13px}main{padding:0 18px}.teaching-strip{align-items:start;padding:12px;font-size:11px;margin-bottom:22px}.teaching-badge{margin-top:2px}.assessment-layout{display:flex;flex-direction:column;gap:22px}.step-sidebar{position:static;width:100%}.sidebar-label,.sidebar-footer{display:none}.step-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.step-button{gap:8px;padding:9px 7px;min-height:54px}.step-button .step-number{width:21px;height:21px;flex-basis:21px;font-size:10px}.step-button strong{font-size:11px}.step-button small{font-size:9px}.step-main,.guidance{width:100%}.section-heading h2{font-size:24px}.field-card{padding:17px}.choice{min-height:44px;padding:9px 11px}.numeric-grid{gap:9px}.numeric-grid .field-card{padding:13px}.numeric-grid legend{font-size:13px}.number-input{max-width:100%}.source-button{min-height:30px}.form-actions{gap:9px}.primary,.secondary{padding:11px 14px}.case-grid,.reference-grid{grid-template-columns:1fr}.view-header{align-items:start;flex-direction:column}.case-card{padding:22px}.case-card .card-index{margin-bottom:12px}.case-story{padding:24px}.case-story h2{font-size:24px}.quiz-choice{font-size:13px}.site-footer{padding:20px 18px;flex-direction:column;gap:8px;margin-top:32px}.summary-row{gap:12px}.summary-row span:first-child{max-width:55%}.summary-row span:last-child{max-width:45%}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media(max-width:380px){.step-list{grid-template-columns:repeat(2,minmax(0,1fr))}.numeric-grid{grid-template-columns:1fr}.numeric-grid .field-hint{min-height:0}}
@media print{body{background:white;color:black;font-size:11pt}.app-header,main,.site-footer,dialog,#toast,.skip-link{display:none!important}#print-content{display:block;padding:12mm}#print-content h1{font-size:22pt}#print-content h2{font-size:15pt;margin:20px 0 10px}#print-content p{font-size:10pt}#print-content .summary-group{break-inside:avoid;border-color:#bbb}#print-content .summary-row{font-size:9pt}#print-content .summary-heading-row button{display:none}.print-warning{border:1px solid #777;padding:12px;margin:15px 0}a{color:inherit;text-decoration:none}}