.skip-link{position:fixed;z-index:999;left:1rem;top:1rem;transform:translateY(-180%);padding:.7rem 1rem;border-radius:.5rem;background:#fff;color:var(--ink);font-weight:700}
.skip-link:focus{transform:none}
.independent-bar{padding:.42rem 1rem;background:var(--ink);color:#fff;text-align:center;font-size:.78rem;line-height:1.4}
.site-header{position:sticky;z-index:50;top:0;background:rgba(255,255,255,.97);border-bottom:1px solid rgba(215,215,230,.8);backdrop-filter:blur(10px)}
.header-inner{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:1.5rem;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:.7rem;color:var(--ink);text-decoration:none;white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:var(--primary);color:#fff;font:700 .78rem/1 var(--font-heading);box-shadow:3px 3px 0 var(--secondary)}
.brand strong{display:block;font:700 1rem/1.2 var(--font-heading)}
.brand small{display:block;margin-top:.13rem;color:var(--muted);font-size:.7rem}
.main-nav{display:flex;align-items:center;justify-content:center;gap:clamp(.6rem,1.5vw,1.35rem)}
.main-nav a{color:var(--ink);font-family:var(--font-heading);font-size:.88rem;font-weight:600;text-decoration:none}
.main-nav a:hover{text-decoration:underline;text-decoration-color:var(--secondary);text-decoration-thickness:3px}
.menu-toggle{display:none;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--ink);padding:.55rem .7rem;font-weight:700}
.breadcrumbs{padding-top:1.2rem}
.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:.4rem;list-style:none;margin:0;padding:0;color:var(--muted);font-size:.85rem}
.breadcrumbs li:not(:last-child)::after{content:"/";margin-left:.4rem;color:var(--border)}
.hero{position:relative;overflow:hidden;padding:clamp(4rem,9vw,7.8rem) 0;background:linear-gradient(135deg,#f1f0ff 0%,#fff9e6 100%)}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;opacity:.8;pointer-events:none}
.hero::before{width:260px;height:260px;right:-100px;top:-80px;background:var(--secondary)}
.hero::after{width:180px;height:180px;left:-90px;bottom:-90px;border:35px solid var(--primary)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);align-items:center;gap:clamp(2rem,6vw,5rem)}
.hero h1 span{position:relative;z-index:0;white-space:nowrap}
.hero h1 span::after{content:"";position:absolute;z-index:-1;left:-.06em;right:-.06em;bottom:.08em;height:.3em;border-radius:1em;background:var(--secondary);transform:rotate(-1deg)}
.hero-copy{max-width:700px;font-size:clamp(1.05rem,2vw,1.25rem)}
.button-row{display:flex;flex-wrap:wrap;gap:.85rem;margin:1.8rem 0}
.trust-list{display:flex;flex-wrap:wrap;gap:.7rem 1.2rem;list-style:none;margin:1.7rem 0 0;padding:0;color:var(--ink);font-weight:600;font-size:.88rem}
.trust-list li::before{content:"✓";display:inline-grid;place-items:center;width:1.4rem;height:1.4rem;margin-right:.4rem;border-radius:50%;background:var(--success-bg);color:var(--success)}
.hero-tool{position:relative;padding:1.8rem;border:1px solid rgba(87,81,225,.18);border-radius:var(--radius-lg);background:rgba(255,255,255,.88);box-shadow:0 24px 70px rgba(22,20,57,.14)}
.hero-tool::before{content:"";position:absolute;inset:-9px 18px auto -9px;height:38px;border-radius:14px;background:var(--primary);z-index:-1;transform:rotate(-2deg)}
.hero-tool h2{font-size:1.5rem}
.hero-score{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:1rem;margin:1.4rem 0;padding:1rem;border-radius:14px;background:var(--surface-lilac)}
.score-ring{display:grid;place-items:center;width:72px;height:72px;border-radius:50%;background:conic-gradient(var(--primary) 0 80%,#d9d7f5 80%);color:var(--ink);font:700 1rem/1 var(--font-heading)}
.score-ring::before{content:"32/40";display:grid;place-items:center;width:56px;height:56px;border-radius:50%;background:#fff}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem;margin-top:1rem}
.stat{padding:.8rem;border-radius:12px;background:var(--surface-soft);text-align:center}
.stat strong{display:block;color:var(--ink);font:700 1.25rem/1.2 var(--font-heading)}
.feature-strip{position:relative;z-index:2;margin-top:-1.7rem}
.feature-strip .grid{gap:0;padding:1.1rem 1.25rem;border:1px solid rgba(87,81,225,.13);border-radius:22px;background:#fff;box-shadow:0 24px 60px rgba(22,20,57,.11)}
.feature-item{position:relative;display:grid;grid-template-columns:52px minmax(0,1fr);align-items:center;gap:1rem;min-width:0;padding:.75rem 1.25rem}
.feature-item:not(:last-child)::after{content:"";position:absolute;right:0;top:20%;bottom:20%;width:1px;background:linear-gradient(transparent,#d8d6ed 22%,#d8d6ed 78%,transparent)}
.feature-item .feature-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:linear-gradient(145deg,var(--ink),#302a72);color:#fff;font:700 .88rem/1 var(--font-heading);letter-spacing:.04em;box-shadow:0 0 0 5px var(--surface-lilac),4px 4px 0 var(--secondary)}
.feature-item>span:last-child{display:block;min-width:0}
.feature-item strong{display:block;margin-bottom:.16rem;color:var(--ink);font:700 .9rem/1.25 var(--font-heading)}
.feature-item>span:last-child>span{display:block;color:var(--muted);font-size:.78rem;line-height:1.4}
.path-card,.topic-card{display:flex;flex-direction:column;min-height:100%;padding:1.5rem;transition:transform .18s ease,border-color .18s ease}
.path-card:hover,.topic-card:hover{transform:translateY(-4px);border-color:var(--primary)}
.path-card .card-link,.topic-card .card-link{margin-top:auto;font-weight:700}
.topic-number{display:grid;place-items:center;width:48px;height:48px;margin-bottom:1rem;border-radius:14px;background:var(--ink);color:#fff;font:700 1rem/1 var(--font-heading);box-shadow:4px 4px 0 var(--secondary)}
.info-band{display:grid;grid-template-columns:1.1fr .9fr;gap:2rem;padding:clamp(1.5rem,4vw,3rem);border-radius:var(--radius-lg);background:var(--ink);color:#dcdbea}
.info-band h2,.info-band h3{color:#fff}
.info-band .button-secondary{border-color:#fff}
.guide-hero{padding:clamp(3.5rem,7vw,6rem) 0 3.5rem;background:linear-gradient(135deg,var(--surface-lilac),#fff)}
.guide-hero .lede{max-width:790px;font-size:1.16rem}
.guide-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;align-items:start;gap:2.5rem}
.prose{max-width:780px}
.prose h2{margin-top:2.2rem;font-size:clamp(1.5rem,3vw,2.1rem)}
.prose h3{margin-top:1.7rem}
.prose li{margin:.45rem 0}
.callout{padding:1.25rem;border-left:5px solid var(--secondary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:var(--warning-bg);color:var(--ink)}
.aside-card{position:sticky;top:120px;padding:1.35rem}
.aside-card ul{margin:.7rem 0 1.2rem}
.source-box{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin:2.5rem 0;padding:1.5rem;border:1px solid #b8b5ef;border-radius:var(--radius);background:var(--surface-lilac)}
.source-box h2{font-size:1.35rem}
.source-box ul{margin:0}
.faq-section{margin-top:-3rem;padding-top:0}
.faq-section .section-heading{margin-bottom:1.5rem}
.faq-list{display:grid;gap:.75rem;width:100%}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff}
.faq-item summary{cursor:pointer;padding:1.1rem 3rem 1.1rem 1.2rem;color:var(--ink);font-family:var(--font-heading);font-weight:600;list-style:none;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:1.2rem;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--primary)}
.faq-item[open] summary::after{content:"−"}
.faq-answer{padding:0 1.2rem 1.1rem}
.filter-bar{display:flex;flex-wrap:wrap;gap:.8rem;align-items:end;margin-bottom:1.5rem;padding:1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-soft)}
.field{display:grid;gap:.35rem}
.field label{color:var(--ink);font-weight:700;font-size:.86rem}
.field select,.field input{min-height:46px;padding:.55rem .7rem;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--ink)}
.question-bank{display:grid;gap:.75rem}
.question-entry{border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff}
.question-entry summary{cursor:pointer;padding:1rem;list-style:none}
.question-entry summary::-webkit-details-marker{display:none}
.question-entry .q-top{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}
.question-entry h3{margin:.4rem 0 0;font-size:1rem}
.question-detail{padding:0 1rem 1rem;border-top:1px solid var(--border)}
.attribution{font-size:.82rem;color:var(--muted)}
.notice{padding:1rem 1.2rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-soft)}
.notice-warning{border-color:#efd98d;background:var(--warning-bg);color:var(--ink)}
.mt-2{margin-top:2rem}
.quiz-page{min-height:70vh;padding:clamp(2rem,5vw,4rem) 0;background:linear-gradient(180deg,var(--surface-lilac),#fff 45%)}
.quiz-wrap{max-width:960px}
.quiz-title-row{display:flex;align-items:end;justify-content:space-between;gap:2rem;margin-bottom:1.5rem}
.quiz-title-row>*{min-width:0}
.quiz-title-row h1{font-size:clamp(1.8rem,4vw,3rem)}
.mode-nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.5rem}
.mode-nav a{padding:.45rem .7rem;border:1px solid var(--border);border-radius:999px;background:#fff;color:var(--ink);font-size:.8rem;font-weight:700;text-decoration:none}
.profile-selector{display:grid;grid-template-columns:auto minmax(250px,1fr);align-items:center;gap:.45rem 1rem;margin-bottom:1rem;padding:1rem 1.2rem;box-shadow:none}
.profile-selector label{color:var(--ink)}
.profile-selector select{width:100%;min-width:0;max-width:100%;min-height:44px;padding:.55rem .75rem;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--ink);font-weight:700}
.profile-selector span{grid-column:2;color:var(--muted);font-size:.78rem}
.quiz-setup{padding:1.5rem}
.topic-picker{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}
.topic-picker button{padding:1rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;color:var(--ink);font-weight:700;text-align:left;cursor:pointer}
.topic-picker button:hover{border-color:var(--primary);background:var(--surface-lilac)}
.quiz-status{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.75rem;padding:1rem 1.2rem;box-shadow:none}
.quiz-status span{display:block;color:var(--muted);font-size:.78rem}
.quiz-status strong{display:block;color:var(--ink);font-family:var(--font-heading)}
.timer-box{text-align:right}
.timer-box strong{font-size:1.25rem;font-variant-numeric:tabular-nums}
.timer-box.timer-warning strong{color:var(--danger)}
.progress-track{height:10px;margin-bottom:1rem;border-radius:999px;background:#dcdaf1;overflow:hidden}
.progress-track span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--primary),#8c86f2);transition:width .25s ease}
.question-card,.review-panel,.result-panel{padding:clamp(1.25rem,4vw,2.2rem)}
.question-meta{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1.2rem}
.source-help{border:0;background:transparent;color:var(--primary-dark);font-size:.8rem;text-decoration:underline;cursor:pointer}
.origin-help{padding:.8rem;border-radius:var(--radius-sm);background:var(--surface-soft);font-size:.86rem}
.question-card fieldset{margin:0;padding:0;border:0}
.question-card legend{display:block;width:100%;margin:0 0 1.3rem;color:var(--ink);font:700 clamp(1.2rem,3vw,1.65rem)/1.35 var(--font-heading)}
.answer-options{display:grid;gap:.75rem}
.answer-option{position:relative;display:grid;grid-template-columns:42px 1fr;align-items:center;gap:.8rem;min-height:64px;padding:.7rem 1rem;border:2px solid var(--border);border-radius:14px;background:#fff;color:var(--ink);cursor:pointer}
.answer-option:hover{border-color:#aaa6ea;background:#fafaff}
.answer-option:has(input:checked){border-color:var(--primary);background:var(--surface-lilac)}
.answer-option input{position:absolute;opacity:0;width:1px;height:1px}
.option-letter{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--border);border-radius:10px;background:var(--surface-soft);font-weight:800}
.answer-option:has(input:checked) .option-letter{border-color:var(--primary);background:var(--primary);color:#fff}
.answer-option.is-correct{border-color:var(--success);background:var(--success-bg)}
.answer-option.is-wrong{border-color:var(--danger);background:var(--danger-bg)}
.review-toggle{display:flex;align-items:center;gap:.55rem;margin-top:1rem;color:var(--ink);font-weight:700;cursor:pointer}
.review-toggle input{width:1.15rem;height:1.15rem;accent-color:var(--primary)}
.feedback{margin-top:1rem;padding:1rem 1.1rem;border-radius:var(--radius-sm);background:var(--surface-soft)}
.feedback.correct{border-left:5px solid var(--success);background:var(--success-bg)}
.feedback.incorrect{border-left:5px solid var(--danger);background:var(--danger-bg)}
.feedback h2{font-size:1.1rem}
.feedback p:last-child{margin-bottom:0}
.feedback-source{font-size:.83rem}
.quiz-actions{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.75rem;margin-top:1.4rem}
.review-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:.5rem;margin:1.2rem 0}
.review-grid button{aspect-ratio:1;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--ink);font-weight:800;cursor:pointer}
.review-grid button.answered{border-color:var(--primary);background:var(--surface-lilac)}
.review-grid button.marked{box-shadow:inset 0 -4px 0 var(--secondary)}
.result-heading{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:2rem}
.result-heading h2{margin-bottom:.2rem;font-size:clamp(2.4rem,7vw,4.5rem)}
.result-threshold{padding:1rem 1.3rem;border-radius:var(--radius);background:var(--surface-lilac);text-align:center}
.result-threshold span{display:block;font-size:.8rem}.result-threshold strong{display:block;color:var(--ink);font:700 1.5rem/1.2 var(--font-heading)}
.breakdown{display:grid;gap:.8rem;margin-bottom:2rem}
.breakdown-row{display:grid;grid-template-columns:minmax(190px,1fr) minmax(120px,2fr) auto;align-items:center;gap:1rem}
.breakdown-track{height:10px;border-radius:999px;background:#e3e2eb;overflow:hidden}.breakdown-track span{display:block;height:100%;background:var(--primary)}
.revision-links{display:flex;flex-wrap:wrap;gap:.6rem}
.revision-links a{padding:.55rem .8rem;border-radius:999px;background:var(--warning-bg);color:var(--ink);font-weight:700;text-decoration:none}
.quiz-attribution{margin-top:1.3rem;padding:1rem;border-top:1px solid var(--border);color:var(--muted);font-size:.8rem}
.quiz-attribution p{margin:.3rem 0}
@media(max-width:700px){.quiz-wrap,.quiz-title-row,.quiz-title-row>*,.mode-nav,.profile-selector,.quiz-app,.quiz-status,.question-card,.review-panel,.result-panel{min-width:0;max-width:100%}.quiz-title-row{align-items:start;flex-direction:column}.quiz-title-row h1{max-width:100%;overflow-wrap:anywhere}.mode-nav{justify-content:flex-start}.mode-nav a{flex:1 1 auto;text-align:center}.profile-selector{grid-template-columns:minmax(0,1fr)}.profile-selector span{grid-column:1;overflow-wrap:anywhere}.topic-picker{grid-template-columns:1fr}.quiz-status{align-items:flex-start}.question-card,.review-panel,.result-panel{border-radius:14px;overflow:hidden}.question-card legend,.answer-option{overflow-wrap:anywhere}.review-grid{grid-template-columns:repeat(5,1fr)}.result-heading{align-items:flex-start;flex-direction:column}.breakdown-row{grid-template-columns:1fr auto}.breakdown-track{grid-column:1/-1;grid-row:2}.quiz-actions .button{flex:1 1 100%}}
.gone-page{min-height:58vh;display:grid;place-items:center;text-align:center}
.site-footer{padding:4rem 0 1.5rem;background:var(--ink);color:#bebdce}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:2rem}
.site-footer h2{font-size:1rem;color:#fff}
.site-footer nav{display:flex;flex-direction:column;gap:.5rem}
.site-footer a{color:#e8e7f0;text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.brand-light{color:#fff!important;margin-bottom:1rem}
.footer-disclaimer{max-width:520px;font-size:.84rem}
.footer-bottom{display:flex;justify-content:space-between;gap:1rem;margin-top:2.2rem;padding-top:1.3rem;border-top:1px solid #393653;font-size:.8rem}
@media(max-width:1020px){.header-inner{grid-template-columns:auto auto 1fr}.menu-toggle{display:inline-flex;justify-self:end;gap:.4rem}.main-nav{display:none;position:absolute;left:1rem;right:1rem;top:calc(100% + .3rem);padding:1rem;border:1px solid var(--border);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);align-items:stretch;flex-direction:column}.main-nav.is-open{display:flex}.header-cta{display:none}.hero-grid,.guide-layout{grid-template-columns:1fr}.hero-tool{max-width:680px}.aside-card{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.feature-strip .grid{gap:.7rem;padding:.85rem}.feature-item{padding:.85rem 1rem;border-radius:14px;background:var(--surface-soft)}.feature-item:not(:last-child)::after{display:none}}
@media(max-width:700px){.brand small{display:none}.independent-bar{font-size:.7rem}.hero h1 span{white-space:normal}.hero-tool{padding:1.2rem}.feature-strip{margin-top:0;padding-top:1rem}.feature-strip .grid{box-shadow:none;border:1px solid var(--border)}.feature-item{grid-template-columns:48px minmax(0,1fr);gap:.9rem}.feature-item .feature-icon{width:44px;height:44px;box-shadow:0 0 0 4px var(--surface-lilac),3px 3px 0 var(--secondary)}.faq-section{margin-top:-1.5rem}.info-band,.source-box{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.q-top{flex-direction:column}.button-row .button{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}