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var(--divider)}.mobile-sheet__section-label{font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:.06em;color:var(--fg-subtle);margin-bottom:var(--space-2);font-weight:700}.mobile-sheet__close{background:var(--bg-muted);border:1px solid var(--border);width:36px;height:36px;color:var(--fg);cursor:pointer;border-radius:999px;justify-content:center;align-items:center;display:inline-flex}[data-theme=hc] .mobile-sheet__close{border-width:2px}.mobile-nav{margin-bottom:var(--space-4);flex-direction:column;gap:2px;display:flex}.mobile-nav a{padding:14px var(--space-4);background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--fg);justify-content:space-between;align-items:center;font-weight:600;text-decoration:none;display:flex}[data-theme=hc] .mobile-nav a{border-width:2px}.mobile-nav a:hover{background:var(--bg-muted);text-decoration:none}.mobile-nav a[aria-current=page]{background:var(--accent-soft);color:var(--accent-soft-fg);border-color:#0000}[data-theme=hc] .mobile-nav a[aria-current=page]{background:var(--accent);color:var(--fg-on-accent)}.app-footer{margin-top:var(--space-16);padding:var(--space-12) 0 var(--space-10);border-top:1px solid var(--border);background:var(--bg-elev)}.app-footer__grid{gap:var(--space-8);grid-template-columns:1.4fr 1fr 1fr 1fr;display:grid}.app-footer__col h4{font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:.06em;color:var(--fg-subtle);margin-bottom:var(--space-3);font-weight:700}.app-footer__col ul{gap:var(--space-2);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.app-footer__col a{color:var(--fg-muted);font-size:var(--fs-sm)}.app-footer__col a:hover{color:var(--fg);text-decoration:none}.app-footer__bottom{margin-top:var(--space-8);padding-top:var(--space-6);border-top:1px solid var(--divider);font-size:var(--fs-xs);color:var(--fg-subtle);justify-content:space-between;gap:var(--space-4);flex-wrap:wrap;display:flex}.hero{padding:var(--space-16) 0 var(--space-12);position:relative;overflow:hidden}.hero__grid{gap:var(--space-12);grid-template-columns:1.3fr 1fr;align-items:center;display:grid}.hero__eyebrow{background:var(--accent-soft);color:var(--accent-soft-fg);font-size:var(--fs-xs);letter-spacing:.02em;margin-bottom:var(--space-5);border-radius:999px;align-items:center;gap:8px;padding:6px 12px 6px 8px;font-weight:600;display:inline-flex}.hero__eyebrow .dot{background:var(--accent);width:16px;height:16px;color:var(--fg-on-accent);border-radius:50%;place-items:center;font-size:9px;font-weight:800;display:inline-grid}.hero__title{font-size:clamp(36px, 5.5vw, var(--fs-4xl));letter-spacing:-.025em;margin-bottom:var(--space-5);font-weight:700;line-height:1.1}.hero__title em{white-space:nowrap;font-style:normal;position:relative}.hero__title em:after{content:"";background:var(--accent-soft);z-index:-1;inset-inline:-2px;border-radius:2px;height:12px;position:absolute;bottom:4px}[data-theme=hc] .hero__title em{color:var(--accent)}[data-theme=hc] .hero__title em:after{display:none}.hero__lede{font-size:var(--fs-lg);color:var(--fg-muted);margin-bottom:var(--space-8);max-width:50ch;line-height:1.55}.hero__cta{gap:var(--space-3);flex-wrap:wrap;display:flex}.hero__stats{gap:var(--space-1);margin-top:var(--space-10);border-top:1px solid var(--border);padding-top:var(--space-6);grid-template-columns:repeat(3,1fr);display:grid}.hero__stat-num{font-size:var(--fs-2xl);letter-spacing:-.02em;font-feature-settings:"tnum" 1;font-weight:700;line-height:1}.hero__stat-label{font-size:var(--fs-sm);color:var(--fg-muted);margin-top:4px}.showcase{height:460px;position:relative}.showcase__card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-5);box-shadow:var(--shadow);font-size:var(--fs-sm);position:absolute}[data-theme=hc] .showcase__card{border-width:2px}.showcase__card--main{gap:var(--space-3);flex-direction:column;display:flex;inset:30px 20px 80px}.showcase__card--mini{z-index:2;width:220px;bottom:20px;right:0}.showcase__card--badge{width:180px;padding:var(--space-3) var(--space-4);z-index:2;align-items:center;gap:10px;font-weight:600;display:flex;top:0;left:8px}.qcard__head{justify-content:space-between;align-items:center;margin-bottom:4px;display:flex}.qcard__qnum{font-size:var(--fs-xs);color:var(--fg-subtle);letter-spacing:.04em;font-weight:600}.qcard__cert{font-size:var(--fs-xs);color:var(--accent-soft-fg);background:var(--accent-soft);border-radius:999px;padding:2px 8px;font-weight:600}.qcard__q{font-size:var(--fs-md);font-weight:600;line-height:1.4}.qcard__q-en{font-size:var(--fs-xs);color:var(--fg-subtle);margin-top:2px;font-style:italic;line-height:1.4}.qcard__opts{flex-direction:column;gap:6px;margin-top:4px;display:flex}.qcard__opt{border:1px solid var(--border);border-radius:var(--radius);font-size:var(--fs-sm);align-items:center;gap:10px;padding:10px 12px;display:flex}.qcard__opt-letter{background:var(--bg-muted);width:22px;height:22px;color:var(--fg-muted);border-radius:6px;place-items:center;font-size:11px;font-weight:700;display:inline-grid}.qcard__opt--correct{border-color:var(--success);background:var(--success-soft);color:var(--success);font-weight:600}.qcard__opt--correct .qcard__opt-letter{background:var(--success);color:#fff}[data-theme=hc] .qcard__opt--correct{border-width:2px}.section{padding:var(--space-12) 0}.section--alt{background:var(--bg-elev);border-block:1px solid var(--border)}[data-theme=hc] .section--alt{border-block-width:2px}.section__head{justify-content:space-between;align-items:end;gap:var(--space-6);margin-bottom:var(--space-8);flex-wrap:wrap;display:flex}.section__title{font-size:var(--fs-2xl);letter-spacing:-.02em;font-weight:700}.section__sub{color:var(--fg-muted);font-size:var(--fs-md);margin-top:6px}.cert-grid{gap:var(--space-6);grid-template-columns:1fr 1fr;display:grid}.cert-card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-8);gap:var(--space-5);transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease);flex-direction:column;display:flex;position:relative}.cert-card:hover{border-color:var(--border-strong);transform:translateY(-2px)}[data-theme=hc] .cert-card{border-width:2px}.cert-card__top{justify-content:space-between;align-items:flex-start;gap:var(--space-3);display:flex}.cert-card__id{font-family:var(--font-mono);font-size:var(--fs-xs);color:var(--fg-subtle);letter-spacing:.06em}.cert-card__name{font-size:var(--fs-2xl);letter-spacing:-.02em;margin-top:var(--space-1);font-weight:700}.cert-card__name-en{color:var(--fg-muted);font-size:var(--fs-sm);margin-top:4px;font-weight:500}.cert-card__level{font-size:var(--fs-xs);letter-spacing:.02em;background:var(--bg-muted);color:var(--fg-muted);border:1px solid var(--border);white-space:nowrap;border-radius:999px;padding:4px 10px;font-weight:700}.cert-card__level--core{background:var(--info-soft);color:var(--info);border-color:#0000}.cert-card__level--spec{background:var(--warning-soft);color:var(--warning);border-color:#0000}[data-theme=hc] 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0;display:flex}.cert-card__topic-dot{background:var(--accent);border-radius:50%;flex-shrink:0;width:6px;height:6px}.cert-card__progress{align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);background:var(--bg);border-radius:var(--radius);border:1px solid var(--border);display:flex}[data-theme=hc] .cert-card__progress{border-width:2px}.cert-card__progress-num{font-size:var(--fs-sm);color:var(--fg-muted);font-feature-settings:"tnum" 1;white-space:nowrap;font-weight:600}.cert-card__cta{gap:var(--space-2);margin-top:auto;display:flex}.features{gap:var(--space-4);grid-template-columns:repeat(3,1fr);display:grid}.feature{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-6);gap:var(--space-3);flex-direction:column;display:flex}[data-theme=hc] .feature{border-width:2px}.feature__icon{border-radius:var(--radius);background:var(--accent-soft);width:44px;height:44px;color:var(--accent-soft-fg);place-items:center;display:grid}.feature__title{font-size:var(--fs-md);letter-spacing:-.01em;font-weight:700}.feature__desc{color:var(--fg-muted);font-size:var(--fs-sm);line-height:1.6}.feature__bullet{font-size:var(--fs-sm);color:var(--fg);align-items:center;gap:8px;display:flex}.feature__bullet-mark{color:var(--accent);font-weight:700}.path{gap:var(--space-1);grid-template-columns:repeat(4,1fr);display:grid}.path__step{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-5);gap:var(--space-2);flex-direction:column;display:flex;position:relative}.path__step:not(:last-child):after{content:"";background:var(--border-strong);width:16px;height:2px;position:absolute;top:50%;right:-8px;transform:translateY(-50%)}[data-theme=hc] .path__step{border-width:2px}.path__num{background:var(--accent);width:28px;height:28px;color:var(--fg-on-accent);font-size:var(--fs-sm);font-feature-settings:"tnum" 1;border-radius:50%;place-items:center;font-weight:700;display:inline-grid}.path__title{font-size:var(--fs-md);font-weight:700}.path__desc{font-size:var(--fs-sm);color:var(--fg-muted);line-height:1.5}.cta-strip{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-10) var(--space-8);justify-content:space-between;align-items:center;gap:var(--space-6);flex-wrap:wrap;display:flex}[data-theme=hc] .cta-strip{border-width:2px}.cta-strip__title{font-size:var(--fs-xl);letter-spacing:-.02em;font-weight:700}.cta-strip__sub{color:var(--fg-muted);font-size:var(--fs-base);margin-top:4px}.overview-hero{padding:var(--space-12) 0 var(--space-8);border-bottom:1px solid var(--border)}.overview-hero__crumbs{font-size:var(--fs-xs);color:var(--fg-subtle);margin-bottom:var(--space-4);align-items:center;gap:6px;display:flex}.overview-hero__crumbs a{color:var(--fg-muted)}.overview-hero__head{gap:var(--space-10);grid-template-columns:1.6fr 1fr;align-items:end;display:grid}.overview-hero__id{font-family:var(--font-mono);font-size:var(--fs-xs);letter-spacing:.08em;color:var(--accent);margin-bottom:var(--space-3);font-weight:600}.overview-hero__title{font-size:var(--fs-3xl);letter-spacing:-.025em;font-weight:700;line-height:1.1}.overview-hero__title-en{color:var(--fg-muted);font-size:var(--fs-md);margin-top:var(--space-3);font-weight:500}.overview-hero__lede{margin-top:var(--space-5);color:var(--fg-muted);font-size:var(--fs-md);max-width:56ch;line-height:1.65}.overview-hero__facts{gap:var(--space-2);background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-5);flex-direction:column;display:flex}[data-theme=hc] .overview-hero__facts{border-width:2px}.overview-hero__fact{font-size:var(--fs-sm);border-bottom:1px solid var(--divider);justify-content:space-between;align-items:center;padding:8px 0;display:flex}.overview-hero__fact:last-child{border-bottom:0}.overview-hero__fact-label{color:var(--fg-muted)}.overview-hero__fact-value{font-feature-settings:"tnum" 1;font-weight:700}.overview-hero__cta{margin-top:var(--space-6);gap:var(--space-3);flex-wrap:wrap;display:flex}.domains{padding:var(--space-12) 0}.domain{gap:var(--space-8);padding:var(--space-8) 0;border-bottom:1px solid var(--border);grid-template-columns:280px 1fr;display:grid}.domain:last-child{border-bottom:0}.domain__num{font-family:var(--font-mono);font-size:var(--fs-xs);color:var(--fg-subtle);letter-spacing:.06em;margin-bottom:var(--space-2)}.domain__title{font-size:var(--fs-xl);letter-spacing:-.02em;margin-bottom:var(--space-2);font-weight:700}.domain__title-en{color:var(--fg-muted);font-size:var(--fs-sm);margin-bottom:var(--space-4);font-weight:500}.domain__weight{font-size:var(--fs-xs);color:var(--fg-muted);align-items:center;gap:8px;font-weight:600;display:inline-flex}.domain__weight-bar{background:var(--bg-muted);border-radius:999px;width:100px;height:6px;overflow:hidden}.domain__weight-bar>span{background:var(--accent);border-radius:999px;height:100%;display:block}.domain__topics{gap:var(--space-2);grid-template-columns:1fr 1fr;margin:0;padding:0;list-style:none;display:grid}.domain__topic{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);font-size:var(--fs-sm);align-items:flex-start;gap:10px;padding:12px;line-height:1.5;display:flex}[data-theme=hc] .domain__topic{border-width:2px}.domain__topic-mark{background:var(--accent-soft);width:22px;height:22px;color:var(--accent-soft-fg);font-size:11px;font-weight:700;font-family:var(--font-mono);border-radius:6px;flex-shrink:0;place-items:center;display:inline-grid}.domain__cta{margin-top:var(--space-4);gap:var(--space-2);display:flex}.app-layout{gap:var(--space-8);padding:var(--space-8) 0 var(--space-12);grid-template-columns:280px 1fr;align-items:start;display:grid}.sidebar{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-4);max-height:calc(100vh - 100px);position:sticky;top:80px;overflow-y:auto}[data-theme=hc] .sidebar{border-width:2px}.sidebar__title{font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:.06em;color:var(--fg-subtle);padding:var(--space-2) var(--space-3);font-weight:700}.sidebar__cert-switch{background:var(--bg-muted);border-radius:var(--radius);margin-bottom:var(--space-3);gap:2px;padding:3px;display:flex}.sidebar__cert-switch button{font-size:var(--fs-xs);color:var(--fg-muted);cursor:pointer;background:0 0;border:0;border-radius:7px;flex:1;padding:8px;font-weight:700}.sidebar__cert-switch button[aria-pressed=true]{background:var(--bg-elev);color:var(--fg);box-shadow:var(--shadow-sm)}[data-theme=hc] .sidebar__cert-switch button[aria-pressed=true]{background:var(--accent);color:var(--fg-on-accent)}.sidebar__progress{padding:var(--space-3);margin-bottom:var(--space-3);background:var(--bg-muted);border-radius:var(--radius);font-size:var(--fs-xs)}.sidebar__progress-row{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.sidebar__progress-num{font-feature-settings:"tnum" 1;font-weight:700;font-size:var(--fs-sm)}.sidebar__list{flex-direction:column;gap:1px;margin:0;padding:0;list-style:none;display:flex}.sidebar__group{font-size:var(--fs-xs);color:var(--fg-subtle);text-transform:uppercase;letter-spacing:.04em;padding:var(--space-3) var(--space-3) var(--space-2);margin-top:var(--space-2);font-weight:700}.sidebar__item{align-items:center;gap:var(--space-2);border-radius:var(--radius-sm);font-size:var(--fs-sm);color:var(--fg-muted);text-align:left;cursor:pointer;background:0 0;border:0;width:100%;padding:8px 10px;font-family:inherit;text-decoration:none;display:flex}.sidebar__item:hover{background:var(--bg-muted);color:var(--fg)}.sidebar__item[aria-current=true],.sidebar__item.is-active{background:var(--accent-soft);color:var(--accent-soft-fg);font-weight:600}[data-theme=hc] .sidebar__item[aria-current=true],[data-theme=hc] .sidebar__item.is-active{background:var(--accent);color:var(--fg-on-accent)}.sidebar__item-num{font-family:var(--font-mono);color:var(--fg-subtle);min-width:22px;font-size:11px}.sidebar__item-status{border:1.5px solid var(--border-strong);border-radius:50%;width:14px;height:14px;margin-left:auto}.sidebar__item-status.is-done{background:var(--success);border-color:var(--success)}.study-toolbar{justify-content:space-between;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-5);background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:var(--space-4);flex-wrap:wrap;display:flex}[data-theme=hc] .study-toolbar{border-width:2px}.study-toolbar__crumbs{font-size:var(--fs-xs);color:var(--fg-subtle);align-items:center;gap:6px;display:flex}.study-toolbar__crumbs strong{color:var(--fg);font-weight:600}.study-toolbar__actions{gap:var(--space-2);align-items:center;display:flex}.bilingual-card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-8);margin-bottom:var(--space-4)}[data-theme=hc] .bilingual-card{border-width:2px}.bilingual-card__head{justify-content:space-between;align-items:center;gap:var(--space-3);margin-bottom:var(--space-5);padding-bottom:var(--space-4);border-bottom:1px solid var(--divider);display:flex}.bilingual-card__num{font-family:var(--font-mono);font-size:var(--fs-xs);color:var(--fg-subtle);letter-spacing:.06em}.bilingual-card__title{font-size:var(--fs-2xl);letter-spacing:-.02em;margin-bottom:6px;font-weight:700}.bilingual-card__title-en{color:var(--fg-muted);font-size:var(--fs-base);font-style:italic;font-weight:500}.bilingual-card__cols{gap:var(--space-6);grid-template-columns:1fr 1fr;display:grid}.bilingual-card__col h4{font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:.06em;color:var(--fg-subtle);margin-bottom:var(--space-3);align-items:center;gap:8px;font-weight:700;display:inline-flex}.bilingual-card__col h4 .lang-pill{background:var(--accent-soft);color:var(--accent-soft-fg);border-radius:4px;padding:1px 6px;font-size:10px}.bilingual-card__col p{margin-bottom:var(--space-3);line-height:1.7;font-size:var(--fs-base)}.bilingual-card__col p:last-child{margin-bottom:0}.bilingual-card__col--en p{color:var(--fg-muted);font-size:var(--fs-sm)}.term{background:var(--highlight-bg);color:var(--highlight-fg);cursor:help;border-bottom:1px dashed;border-radius:3px;padding:1px 4px;font-weight:600;display:inline}.bilingual-card__nav{justify-content:space-between;gap:var(--space-3);padding-top:var(--space-5);margin-top:var(--space-6);border-top:1px solid var(--divider);align-items:center;display:flex}.bilingual-card__nav-help{font-size:var(--fs-xs);color:var(--fg-subtle);gap:var(--space-3);align-items:center;display:flex}.quiz-shell{padding:var(--space-8) 0 var(--space-12)}.quiz-toolbar{justify-content:space-between;align-items:center;gap:var(--space-4);padding:var(--space-3) var(--space-5);background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:var(--space-4);display:flex}[data-theme=hc] .quiz-toolbar{border-width:2px}.quiz-toolbar__progress{align-items:center;gap:var(--space-3);flex:1;max-width:480px;display:flex}.quiz-toolbar__progress .progress-track{flex:1}.quiz-toolbar__step{font-size:var(--fs-sm);font-feature-settings:"tnum" 1;white-space:nowrap;font-weight:700}.quiz-toolbar__timer{background:var(--bg-muted);font-family:var(--font-mono);font-feature-settings:"tnum" 1;font-size:var(--fs-sm);border-radius:999px;align-items:center;gap:6px;padding:6px 12px;font-weight:600;display:inline-flex}.quiz-card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-8)}[data-theme=hc] .quiz-card{border-width:2px}.quiz-card__top{margin-bottom:var(--space-5);justify-content:space-between;align-items:center;display:flex}.quiz-card__tags{gap:8px;display:flex}.quiz-card__bookmark{border:1px solid var(--border);border-radius:var(--radius);color:var(--fg-muted);font-size:var(--fs-xs);cursor:pointer;background:0 0;align-items:center;gap:6px;padding:6px 10px;font-weight:600;display:inline-flex}.quiz-card__bookmark:hover{color:var(--fg);border-color:var(--border-strong)}.quiz-card__bookmark[aria-pressed=true]{color:var(--warning);border-color:var(--warning);background:var(--warning-soft)}.quiz-q{font-size:var(--fs-xl);letter-spacing:-.01em;margin-bottom:6px;font-weight:600;line-height:1.4}.quiz-q-en{color:var(--fg-subtle);font-style:italic;font-size:var(--fs-sm);margin-bottom:var(--space-6);line-height:1.5}.quiz-options{gap:var(--space-2);margin-bottom:var(--space-5);flex-direction:column;display:flex}.quiz-option{align-items:flex-start;gap:var(--space-3);padding:var(--space-4);background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius);cursor:pointer;text-align:left;font-family:inherit;font-size:var(--fs-base);color:var(--fg);width:100%;transition:border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur-fast) var(--ease);display:flex}[data-theme=hc] .quiz-option{border-width:2px}.quiz-option:hover:not(:disabled){border-color:var(--accent);background:var(--accent-soft)}.quiz-option:active{transform:translateY(1px)}.quiz-option:disabled{cursor:default}.quiz-option__letter{background:var(--bg-muted);width:28px;height:28px;color:var(--fg-muted);font-weight:700;font-size:var(--fs-sm);border:1px solid var(--border);border-radius:7px;flex-shrink:0;place-items:center;display:inline-grid}[data-theme=hc] .quiz-option__letter{border-width:2px}.quiz-option__text{padding-top:4px;line-height:1.5}.quiz-option__text-en{color:var(--fg-subtle);font-style:italic;font-size:var(--fs-xs);margin-top:4px;display:block}.quiz-option.is-selected{border-color:var(--accent);background:var(--accent-soft)}.quiz-option.is-selected .quiz-option__letter{background:var(--accent);color:var(--fg-on-accent);border-color:var(--accent)}.quiz-option.is-correct{border-color:var(--success);background:var(--success-soft);color:var(--fg)}.quiz-option.is-correct .quiz-option__letter{background:var(--success);color:#fff;border-color:var(--success)}.quiz-option.is-incorrect{border-color:var(--danger);background:var(--danger-soft)}.quiz-option.is-incorrect .quiz-option__letter{background:var(--danger);color:#fff;border-color:var(--danger)}.quiz-explain{margin-top:var(--space-5);padding:var(--space-5);border-radius:var(--radius);background:var(--bg);border:1px solid var(--border)}[data-theme=hc] .quiz-explain{border-width:2px}.quiz-explain__head{font-size:var(--fs-xs);letter-spacing:.04em;text-transform:uppercase;margin-bottom:var(--space-3);color:var(--success);align-items:center;gap:8px;font-weight:700;display:flex}.quiz-explain__head.is-incorrect{color:var(--danger)}.quiz-explain__title{margin-bottom:var(--space-2);font-weight:700;font-size:var(--fs-md)}.quiz-explain__body{color:var(--fg-muted);font-size:var(--fs-sm);line-height:1.65}.quiz-explain__body strong{color:var(--fg)}.quiz-foot{margin-top:var(--space-6);padding-top:var(--space-5);border-top:1px solid var(--divider);justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.quiz-foot__keys{gap:var(--space-3);font-size:var(--fs-xs);color:var(--fg-subtle);align-items:center;display:flex}.aside-card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-5);margin-top:var(--space-4)}[data-theme=hc] .aside-card{border-width:2px}.aside-card__head{margin-bottom:var(--space-3);justify-content:space-between;align-items:center;display:flex}.aside-card__title{font-size:var(--fs-md);letter-spacing:-.01em;font-weight:700}.aside-card__sub{font-size:var(--fs-sm);color:var(--fg-muted);margin-top:2px}.wrong-list{gap:var(--space-2);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.wrong-list__item{gap:var(--space-3);padding:var(--space-3);background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);display:flex}[data-theme=hc] .wrong-list__item{border-width:2px}.wrong-list__num{font-family:var(--font-mono);font-size:var(--fs-xs);color:var(--fg-subtle);min-width:24px}.wrong-list__q{font-size:var(--fs-sm);flex:1;line-height:1.5}.wrong-list__cat{letter-spacing:.04em;text-transform:uppercase;color:var(--danger);margin-bottom:2px;font-size:10px;font-weight:700}.quiz-grid{gap:var(--space-4);grid-template-columns:1fr 320px;align-items:start;display:grid}.flash-shell{padding:var(--space-8) 0 var(--space-12);align-items:center;gap:var(--space-5);flex-direction:column;display:flex}.flash-meta{width:100%;max-width:720px;font-size:var(--fs-sm);color:var(--fg-muted);justify-content:space-between;align-items:center;display:flex}.flash-meta__step{font-feature-settings:"tnum" 1;color:var(--fg);font-weight:700}.flash-card{perspective:1600px;cursor:pointer;width:100%;max-width:720px;height:360px}.flash-card__inner{width:100%;height:100%;transition:transform .5s var(--ease);transform-style:preserve-3d;position:relative}[data-motion=reduced] .flash-card__inner{transition:none}.flash-card.is-flipped .flash-card__inner{transform:rotateY(180deg)}.flash-card__face{background:var(--bg-elev);border:1.5px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-8);text-align:center;backface-visibility:hidden;box-shadow:var(--shadow);flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}[data-theme=hc] .flash-card__face{border-width:2px}.flash-card__face--back{transform:rotateY(180deg)}.flash-card__label{text-transform:uppercase;letter-spacing:.1em;color:var(--fg-subtle);margin-bottom:var(--space-3);font-size:10px;font-weight:700}.flash-card__term{font-size:var(--fs-3xl);letter-spacing:-.02em;margin-bottom:var(--space-2);font-weight:700}.flash-card__term-alt{font-size:var(--fs-md);color:var(--fg-muted);font-style:italic}.flash-card__def{font-size:var(--fs-md);max-width:50ch;color:var(--fg);margin-bottom:var(--space-3);line-height:1.65}.flash-card__def-en{font-size:var(--fs-sm);color:var(--fg-muted);max-width:50ch;line-height:1.6}.flash-card__hint{bottom:var(--space-4);font-size:var(--fs-xs);color:var(--fg-subtle);position:absolute}.flash-rate{gap:var(--space-2);margin-top:var(--space-2);display:flex}.flash-rate button{border:1.5px solid var(--border);background:var(--bg-elev);border-radius:var(--radius);font-family:inherit;font-weight:600;font-size:var(--fs-sm);cursor:pointer;color:var(--fg);flex-direction:column;align-items:center;gap:2px;min-width:100px;padding:12px 22px;display:flex}[data-theme=hc] .flash-rate button{border-width:2px}.flash-rate button small{font-size:var(--fs-xs);color:var(--fg-subtle);font-weight:500}.flash-rate button:hover{border-color:var(--border-strong)}.flash-rate__again:hover{border-color:var(--danger);color:var(--danger)}.flash-rate__hard:hover{border-color:var(--warning);color:var(--warning)}.flash-rate__good:hover{border-color:var(--accent);color:var(--accent)}.flash-rate__easy:hover{border-color:var(--success);color:var(--success)}.glossary-hero{padding:var(--space-10) 0 var(--space-6)}.glossary-search{gap:var(--space-2);margin-top:var(--space-5);background:var(--bg-elev);border:1.5px solid var(--border);border-radius:var(--radius-lg);padding:6px;display:flex}[data-theme=hc] .glossary-search{border-width:2px}.glossary-search input{font-family:inherit;font-size:var(--fs-base);color:var(--fg);background:0 0;border:0;outline:none;flex:1;padding:10px 12px}.glossary-search input::placeholder{color:var(--fg-subtle)}.glossary-filter{margin-top:var(--space-4);flex-wrap:wrap;gap:6px;display:flex}.glossary-filter button{border:1px solid var(--border);background:var(--bg-elev);font-family:inherit;font-size:var(--fs-xs);color:var(--fg-muted);cursor:pointer;border-radius:999px;padding:6px 12px;font-weight:600}[data-theme=hc] .glossary-filter button{border-width:2px}.glossary-filter button[aria-pressed=true]{background:var(--accent);color:var(--fg-on-accent);border-color:var(--accent)}.glossary-list{padding:var(--space-8) 0;gap:var(--space-1);flex-direction:column;display:flex}.glossary-letter{font-family:var(--font-mono);font-size:var(--fs-sm);color:var(--accent);padding:var(--space-4) 0 var(--space-2);border-bottom:1px solid var(--divider);margin-bottom:var(--space-2);font-weight:700}.glossary-row{gap:var(--space-5);padding:var(--space-3);border-radius:var(--radius);grid-template-columns:220px 1fr 80px;align-items:start;display:grid}.glossary-row:hover{background:var(--bg-muted)}.glossary-row__term{font-weight:700;font-size:var(--fs-base)}.glossary-row__term-en{font-size:var(--fs-xs);color:var(--fg-subtle);margin-top:2px;font-style:italic}.glossary-row__def{color:var(--fg-muted);font-size:var(--fs-sm);line-height:1.6}.glossary-row__cert{flex-wrap:wrap;gap:4px;display:flex}.glossary-row__cert .tag{padding:2px 8px;font-size:10px}@media (max-width:980px){.app-nav{display:none}.mobile-trigger{display:inline-flex}.header-desktop{display:none}.quiz-grid{grid-template-columns:1fr}.quiz-toolbar{align-items:stretch;gap:var(--space-3);flex-direction:column}.quiz-toolbar__progress{max-width:none}.quiz-card{padding:var(--space-6)}}@media (max-width:920px){.hero__grid{gap:var(--space-8);grid-template-columns:1fr}.showcase{display:none}.cert-grid,.features{grid-template-columns:1fr}.path{grid-template-columns:1fr 1fr}.path__step:not(:last-child):after{display:none}.hero{padding:var(--space-10) 0 var(--space-8)}.section{padding:var(--space-10) 0}.app-layout{gap:var(--space-4);padding:var(--space-5) 0 var(--space-10);grid-template-columns:1fr}.sidebar{max-height:none;position:static}.bilingual-card__cols{gap:var(--space-5);grid-template-columns:1fr}.bilingual-card{padding:var(--space-6)}.bilingual-card__title{font-size:var(--fs-xl)}.bilingual-card__nav{flex-wrap:wrap}.bilingual-card__nav-help{display:none}.overview-hero__head{grid-template-columns:1fr}.domain{gap:var(--space-4);grid-template-columns:1fr}.domain__topics{grid-template-columns:1fr}}@media (max-width:720px){.app-header__row{gap:var(--space-3);height:56px}.brand span:last-child{display:none}.lang-toggle{font-size:11px}.lang-toggle button{padding:4px 10px}.mode-menu__trigger span:last-child{display:none}.mode-menu__panel{inset-inline:var(--space-3);width:auto;position:fixed;top:64px}.app-footer{margin-top:var(--space-12);padding-top:var(--space-8)}.app-footer__grid{gap:var(--space-6);grid-template-columns:1fr 1fr}.flash-card{height:320px}.flash-card__face{padding:var(--space-5)}.flash-card__term{font-size:var(--fs-2xl)}.flash-card__def{font-size:var(--fs-base)}.flash-rate{gap:var(--space-2);grid-template-columns:1fr 1fr;width:100%;max-width:720px;display:grid}.flash-rate button{min-width:0;padding:10px 14px}.glossary-row{gap:var(--space-1);grid-template-columns:1fr}}@media (max-width:620px){.quiz-card{padding:var(--space-4);border-radius:var(--radius-lg)}.quiz-q{font-size:var(--fs-lg)}.quiz-option{padding:var(--space-3)}.quiz-option__text-en{display:none}.quiz-foot{flex-direction:column;align-items:stretch}.quiz-foot__keys{display:none}}@media (max-width:520px){.path{grid-template-columns:1fr}.hero{padding-top:var(--space-8)}.hero__title{font-size:clamp(28px,8vw,38px)}.hero__lede{font-size:var(--fs-base)}.hero__cta{width:100%}.hero__cta .btn{flex:1;justify-content:center}.hero__stats{gap:var(--space-4);grid-template-columns:1fr 1fr}.cta-strip{padding:var(--space-6);flex-direction:column;align-items:flex-start}.cert-card{padding:var(--space-5)}.cert-card__name{font-size:var(--fs-xl)}.cert-card__meta{gap:var(--space-3);grid-template-columns:1fr}}@media (max-width:440px){.app-footer__grid{grid-template-columns:1fr}}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-divide-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}