:root{
  --primitive-ink:oklch(16% 0 0);--primitive-paper:oklch(98.5% 0 0);--primitive-line:oklch(90% 0 0);--primitive-muted:oklch(48% 0 0);
  --color-text:var(--primitive-ink);--color-bg:var(--primitive-paper);--color-border:var(--primitive-line);--color-muted:var(--primitive-muted);
  --button-bg:var(--color-text);--button-text:var(--color-bg);--field-bg:var(--color-bg);
  --space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-6:24px;--space-8:32px;--space-12:48px;--space-16:64px;
  --ease:cubic-bezier(.22,1,.36,1);--shell:1120px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;min-height:100dvh;background:var(--color-bg);color:var(--color-text);font-family:Arial,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}button,select,input,textarea{font:inherit;color:inherit}button,a,select,input,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit}svg{display:block}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.16;letter-spacing:-.025em}p{margin-bottom:0}.shell{width:min(calc(100% - 48px),var(--shell));margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:3px solid var(--color-text);outline-offset:4px}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;padding:12px max(24px,calc((100vw - var(--shell))/2));background:color-mix(in oklch,var(--color-bg) 94%,transparent);border-bottom:1px solid var(--color-border);backdrop-filter:blur(12px)}.brand{text-decoration:none;font-size:14px;font-weight:700;letter-spacing:.04em}.progress-wrap{display:flex;align-items:center;gap:16px;font-size:13px;font-variant-numeric:tabular-nums}.progress-track{width:120px;height:2px;background:var(--color-border);overflow:hidden}.progress-track span{display:block;width:0;height:100%;background:var(--color-text);transform-origin:left;transition:width 240ms var(--ease)}
.hero{position:relative;display:grid;grid-template-columns:90px minmax(0,1fr) 250px;gap:40px;align-items:end;min-height:620px;padding-block:96px 80px}.hero-index{align-self:start;padding-top:10px;font-size:12px;font-weight:700;line-height:1.8;letter-spacing:.18em}.course{font-size:13px;font-weight:700;letter-spacing:.08em;margin-bottom:32px}.hero h1{font-size:clamp(52px,7vw,94px);font-weight:750;letter-spacing:-.065em;margin-bottom:32px}.lead{max-width:620px;font-size:18px;line-height:1.75;color:var(--color-muted)}.hero-actions{display:flex;align-items:center;gap:24px;margin-top:40px}.button{min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:16px;padding:12px 24px;border:1px solid var(--color-text);border-radius:999px;text-decoration:none;font-weight:700;font-size:15px;transition:transform 180ms var(--ease),background-color 180ms,color 180ms}.button svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6}.button:hover{transform:scale(1.035)}.button:active{transform:scale(.97)}.button-dark{background:var(--button-bg);color:var(--button-text)}.button-dark:hover{background:oklch(28% 0 0)}.button-outline{background:transparent;color:var(--color-text)}.button-outline:hover{background:var(--color-text);color:var(--color-bg)}.time{font-size:13px;color:var(--color-muted)}.hero-note{border-top:1px solid var(--color-text);padding-top:16px;margin-bottom:8px}.note-label{font-size:12px;letter-spacing:.1em;color:var(--color-muted)}.hero-note p{margin-top:16px;font-size:15px;line-height:2}.hero-note strong{font-weight:750}
.scenario{padding-block:64px 80px;border-top:1px solid var(--color-text)}.section-heading{display:grid;grid-template-columns:90px 1fr;gap:40px;margin-bottom:48px}.section-no{font-size:13px;font-weight:700;letter-spacing:.12em;padding-top:8px}.section-heading h2{font-size:clamp(28px,3.6vw,44px);margin-bottom:12px}.section-heading p{color:var(--color-muted)}.scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border)}.scenario-grid article{padding:28px 24px 32px;border-right:1px solid var(--color-border)}.scenario-grid article:first-child{padding-left:0}.scenario-grid article:last-child{border-right:0;padding-right:0}.scenario-letter{display:block;font-size:13px;font-weight:700;margin-bottom:40px}.scenario-grid h3{font-size:20px;margin-bottom:12px}.scenario-grid p{font-size:15px;line-height:1.75;color:var(--color-muted)}
.question{border-top:1px solid var(--color-text);padding-block:32px 80px}.question-meta{display:flex;justify-content:space-between;gap:16px;font-size:12px;font-weight:700;letter-spacing:.08em;margin-bottom:48px}.question-body{padding-left:130px}.question-title{display:grid;grid-template-columns:90px 1fr;gap:40px;margin-left:-130px;margin-bottom:40px}.big-no{font-size:52px;font-weight:400;line-height:1;letter-spacing:-.05em}.question-title h2{font-size:clamp(26px,3.2vw,40px);margin-bottom:12px}.question-title p{color:var(--color-muted)}.answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;border-top:1px solid var(--color-border)}.matching-grid label{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:88px;border-bottom:1px solid var(--color-border);font-weight:700}select{min-height:46px;max-width:170px;padding:8px 36px 8px 14px;border:1px solid var(--color-border);border-radius:0;background:var(--field-bg);cursor:pointer}select:hover{border-color:var(--color-text)}select.correct,select.incorrect{border-width:2px}select.correct{border-color:var(--color-text);background:oklch(95% 0 0)}select.incorrect{border-style:dashed;border-color:var(--color-text)}.question-actions{display:flex;align-items:center;gap:24px;margin-top:32px}.hint{font-size:13px;color:var(--color-muted)}.feedback{display:none;margin-top:24px;padding:20px 24px;border:1px solid var(--color-text);font-size:15px}.feedback.show{display:block}.feedback strong{display:block;margin-bottom:6px}.feedback p{color:inherit}.feedback .mini-explain{margin-top:12px;padding-top:12px;border-top:1px solid var(--color-border);line-height:1.75}.feedback.success{background:var(--color-text);color:var(--color-bg)}.feedback.success .mini-explain{border-color:oklch(45% 0 0)}
blockquote{margin:0 0 24px;padding:24px 28px;border-left:1px solid var(--color-text);background:oklch(96% 0 0);font-size:19px;font-weight:700;line-height:1.6}.choice-row{display:flex;gap:12px;border:0;padding:0;margin:0 0 24px}.choice-row label{cursor:pointer}.choice-row input{position:absolute;opacity:0;pointer-events:none}.choice-row span{display:flex;align-items:center;justify-content:center;min-width:112px;min-height:48px;border:1px solid var(--color-border);border-radius:999px;font-weight:700;transition:background-color 180ms,color 180ms,transform 180ms}.choice-row input:checked+span{background:var(--color-text);color:var(--color-bg);border-color:var(--color-text)}.choice-row input:focus-visible+span{outline:3px solid var(--color-text);outline-offset:4px}.choice-row label:hover span{border-color:var(--color-text)}.text-label{display:block;font-weight:700;margin-bottom:8px}textarea,input[type=text]{width:100%;border:1px solid var(--color-border);border-radius:0;background:var(--field-bg);padding:14px 16px;line-height:1.6}textarea{resize:vertical;min-height:96px}textarea::placeholder,input::placeholder{color:oklch(56% 0 0)}textarea:hover,input[type=text]:hover{border-color:var(--color-text)}
.criteria-list{border-top:1px solid var(--color-border)}.criteria-list label{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:20px 0;border-bottom:1px solid var(--color-border)}.criteria-list strong,.criteria-list small{display:block}.criteria-list strong{font-size:17px}.criteria-list small{font-size:13px;color:var(--color-muted);margin-top:4px}.path-builder{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:24px 0;border-block:1px solid var(--color-border)}.path-builder>span{font-weight:750;white-space:nowrap}.path-builder svg{width:24px;min-width:16px;fill:none;stroke:currentColor;stroke-width:1.2}.path-builder select{max-width:150px}.task-prompt{font-weight:700;margin:28px 0 16px}.work-inputs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.work-inputs label>span{display:block;font-size:13px;font-weight:700;margin-bottom:8px}.work-inputs input{min-height:52px}
.summary{display:grid;grid-template-columns:1fr 1.5fr;gap:80px;padding-block:64px;background:var(--color-text);color:var(--color-bg);width:100%;max-width:none;padding-inline:max(24px,calc((100vw - var(--shell))/2));margin-top:16px}.score-block{border-right:1px solid oklch(42% 0 0)}.score-block>span{font-size:13px;letter-spacing:.08em}.score-block strong{display:block;font-size:80px;line-height:1.2;font-weight:400;letter-spacing:-.05em;margin-block:12px}.score-block small{font-size:22px}.score-block p{font-size:14px;max-width:300px;color:var(--color-bg)}.summary-actions{display:flex;flex-direction:column;justify-content:space-between;gap:32px}.summary-actions h2{font-size:clamp(26px,3.2vw,40px);margin:0}.summary-actions>div{display:flex;align-items:center;gap:24px}.summary .button-dark{background:var(--color-bg);color:var(--color-text);border-color:var(--color-bg)}.summary .button-dark:hover{background:oklch(88% 0 0)}.text-button{padding:8px 0;border:0;border-bottom:1px solid currentColor;background:transparent;font-weight:700;min-height:44px}.text-button:hover{opacity:.62}.summary .text-button{color:var(--color-bg)}
.explanation{padding-block:80px}.explanation[hidden]{display:none}.explain-table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;text-align:left;font-size:15px}th,td{padding:18px 16px;border-bottom:1px solid var(--color-border);vertical-align:top}th{font-size:12px;letter-spacing:.08em;border-top:1px solid var(--color-text);border-bottom-color:var(--color-text)}th:first-child,td:first-child{padding-left:0}td:nth-child(2){font-weight:750;white-space:nowrap}.explain-notes{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:48px}.explain-notes h3{font-size:20px;margin-bottom:12px}.explain-notes p{color:var(--color-muted);line-height:1.8}.takeaway{display:grid;grid-template-columns:160px 1fr;gap:32px;border-block:1px solid var(--color-text);padding-block:28px;margin-top:48px}.takeaway>span{font-size:13px;font-weight:700;letter-spacing:.08em}.takeaway p{font-size:18px;line-height:1.8}.footer{display:grid;grid-template-columns:1fr auto;align-items:center;gap:16px 32px;border-top:1px solid var(--color-border);padding-block:32px;font-size:13px}.footer small{grid-column:1/-1;color:var(--color-muted);font-size:11px;margin-top:16px}
.has-js .reveal{opacity:.001;transform:translateY(12px);filter:blur(8px);transition:opacity 600ms var(--ease),transform 600ms var(--ease),filter 600ms var(--ease)}.has-js .reveal.is-visible{opacity:1;transform:none;filter:none}
@media(max-width:900px){.hero{grid-template-columns:56px 1fr;min-height:auto}.hero-note{grid-column:2;max-width:420px;margin-top:16px}.scenario-grid{grid-template-columns:1fr 1fr}.scenario-grid article:nth-child(2){border-right:0}.scenario-grid article:nth-child(-n+2){border-bottom:1px solid var(--color-border)}.scenario-grid article:first-child,.scenario-grid article{padding:24px}.question-body{padding-left:0}.question-title{margin-left:0}.summary{gap:48px}.work-inputs{grid-template-columns:1fr}.path-builder{flex-wrap:wrap;justify-content:flex-start}.path-builder select{max-width:160px}}
@media(max-width:600px){.shell{width:min(calc(100% - 32px),var(--shell))}.topbar{padding-inline:16px;min-height:64px}.brand{font-size:12px}.progress-wrap{gap:8px;font-size:12px}.progress-track{width:56px}.hero{grid-template-columns:1fr;gap:0;padding-block:64px}.hero-index{display:none}.hero h1{font-size:54px}.lead{font-size:16px}.hero-note{grid-column:1}.hero-actions{align-items:flex-start;flex-direction:column;gap:12px}.section-heading{grid-template-columns:1fr;gap:12px;margin-bottom:32px}.scenario{padding-block:48px}.scenario-grid{grid-template-columns:1fr}.scenario-grid article,.scenario-grid article:first-child,.scenario-grid article:last-child{padding:24px 0;border-right:0;border-bottom:1px solid var(--color-border)}.scenario-grid article:last-child{border-bottom:0}.scenario-letter{margin-bottom:16px}.question{padding-block:24px 56px}.question-meta{margin-bottom:32px}.question-title{grid-template-columns:1fr;gap:16px}.big-no{font-size:36px}.answer-grid{grid-template-columns:1fr}.matching-grid label{min-height:84px}.question-actions{align-items:flex-start;flex-direction:column;gap:12px}.choice-row span{min-width:104px}.criteria-list label{align-items:flex-start;flex-direction:column;gap:12px}.criteria-list select{width:100%;max-width:none}.path-builder{display:grid;grid-template-columns:1fr 24px;gap:12px}.path-builder svg{transform:rotate(90deg);justify-self:center}.path-builder select{width:100%;max-width:none}.path-builder svg:nth-of-type(2){grid-column:2}.summary{grid-template-columns:1fr;gap:32px;padding-block:48px}.score-block{border-right:0;border-bottom:1px solid oklch(42% 0 0);padding-bottom:24px}.score-block strong{font-size:64px}.summary-actions>div{align-items:flex-start;flex-direction:column;gap:12px}.explain-notes{grid-template-columns:1fr;gap:32px}.takeaway{grid-template-columns:1fr;gap:12px}.takeaway p{font-size:16px}.footer{grid-template-columns:1fr}.footer .text-button{justify-self:start}th,td{padding:14px 12px;min-width:100px}td:last-child{min-width:240px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}.has-js .reveal{opacity:1;transform:none;filter:none}}
@media print{.topbar,.hero-actions,.question-actions,.summary-actions,.footer button{display:none}.hero{min-height:auto;padding-block:24px}.question,.scenario{break-inside:avoid}.has-js .reveal{opacity:1;transform:none;filter:none}.summary{background:none;color:var(--color-text);padding:24px 0}.score-block p{color:var(--color-text)}.shell{width:100%}body{background:#fff}.explanation[hidden]{display:block}}