.dars-study{color:var(--dars-ink);font-feature-settings:"kern";gap:var(--dars-space-6);line-height:1.6;display:grid}.dars-study-medium{align-items:baseline;gap:var(--dars-space-2);width:fit-content;color:var(--dars-muted);font-size:var(--dars-fs-xs);display:flex}.dars-study-medium b{color:var(--dars-ink);font-weight:700}.dars-study-card{background:var(--dars-surface);border:1px solid var(--dars-line);border-radius:var(--dars-r-lg);padding:var(--dars-space-6) var(--dars-space-5);box-shadow:var(--dars-shadow)}.dars-study-card--flush{padding:0;overflow:hidden}.dars-study-eyebrow{color:var(--dars-brand-text,var(--dars-brand));font-size:var(--dars-fs-sm);letter-spacing:.02em;margin:0 0 var(--dars-space-2);align-items:center;gap:6px;font-weight:700;display:inline-flex}.dars-study-eyebrow svg{flex:none}.dars-study-title{font-size:var(--dars-fs-3xl);margin:0 0 var(--dars-space-2);color:var(--dars-ink);font-weight:800;line-height:1.3}html[dir=rtl] .dars-study-title{font-weight:700;line-height:1.4}.dars-study-sub{font-size:var(--dars-fs-lg);color:var(--dars-muted);max-width:var(--dars-measure);margin:0;line-height:1.7}.dars-study-muted{color:var(--dars-muted);font-size:var(--dars-fs-sm)}.dars-study-section-head{justify-content:space-between;align-items:baseline;gap:var(--dars-space-3);margin:0 0 var(--dars-space-3);display:flex}.dars-study-section-title{font-size:var(--dars-fs-xl);color:var(--dars-ink);margin:0;font-weight:700}.dars-study-practice .dars-qfigure{margin:var(--dars-space-3) 0 0;border:1px solid color-mix(in srgb, var(--dars-ink) 12%, transparent);background:#fff;border-radius:12px;max-width:460px;padding:10px}.dars-study-practice .dars-qfigure img{border-radius:6px;width:100%;height:auto;display:block}.dars-study-section-count{font-size:var(--dars-fs-sm);color:var(--dars-muted);font-variant-numeric:tabular-nums}.dars-study-home{gap:var(--dars-space-6);display:grid}.dars-study-hero{align-items:center;gap:var(--dars-space-6);display:flex}.dars-study-hero-text{flex:auto;min-width:0}@property --dars-study-ring{syntax:"<number>";inherits:false;initial-value:0}.dars-study-ring{--dars-study-ring:0;background:conic-gradient(var(--dars-brand) calc(var(--dars-study-ring) * 1%), var(--dars-line) 0);border-radius:50%;flex:none;width:132px;height:132px;transition:--dars-study-ring .9s cubic-bezier(.22,1,.36,1);animation:.48s cubic-bezier(.22,1,.36,1) both dars-study-ring-in;position:relative}.dars-study-ring:before{content:"";background:var(--dars-surface);border-radius:50%;position:absolute;inset:11px}.dars-study-ring-inner{z-index:1;height:100%;padding:0 var(--dars-space-2);align-content:center;justify-items:center;gap:2px;display:grid;position:relative}.dars-study-ring-num{color:var(--dars-ink);font-variant-numeric:tabular-nums;font-size:30px;font-weight:800;line-height:1}.dars-study-ring-num small{color:var(--dars-muted);font-size:16px;font-weight:700}.dars-study-ring-cap{font-size:var(--dars-fs-xs);color:var(--dars-muted);letter-spacing:.04em;text-transform:uppercase;font-weight:700}@keyframes dars-study-ring-in{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.dars-study-resume{gap:var(--dars-space-3);display:grid}.dars-study-resume-meta{align-items:center;gap:var(--dars-space-2);color:var(--dars-muted);font-size:var(--dars-fs-sm);display:flex}.dars-study-resume-meta b{color:var(--dars-ink);font-weight:700}.dars-study-resume-cta{justify-content:center;align-self:start;align-items:center;gap:var(--dars-space-2);background:var(--dars-primary);color:var(--dars-on-primary);border-radius:var(--dars-r-md);font-size:var(--dars-fs-md);cursor:pointer;min-height:44px;box-shadow:0 14px 30px -18px var(--dars-primary);transition:transform var(--dars-dur-fast) var(--dars-ease), filter var(--dars-dur-fast) var(--dars-ease);border:0;padding:13px 18px;font-weight:700;text-decoration:none;display:inline-flex}.dars-study-resume-cta:hover:not(:disabled){filter:brightness(1.06);transform:translateY(-1px)}.dars-study-resume-cta:active:not(:disabled){filter:brightness(.94);transform:none}.dars-study-resume-cta:focus-visible{outline:var(--dars-focus-ring);outline-offset:var(--dars-focus-offset)}.dars-study-resume-cta:disabled{opacity:.6;cursor:default}.dars-study-resume-cta-arrow{transition:transform var(--dars-dur-fast) var(--dars-ease)}.dars-study-resume-cta:hover:not(:disabled) .dars-study-resume-cta-arrow{transform:translate(3px)}html[dir=rtl] .dars-study-resume-cta:hover:not(:disabled) .dars-study-resume-cta-arrow{transform:translate(-3px)}.dars-study-weak{gap:var(--dars-space-3);display:grid}.dars-study-weak-list{gap:1px;display:grid}.dars-study-weak-empty{padding:var(--dars-space-6);text-align:center;color:var(--dars-muted);font-size:var(--dars-fs-md)}.dars-study-unit{gap:var(--dars-space-5);display:grid}.dars-study-intro{gap:var(--dars-space-3);display:grid}.dars-study-intro-actions{gap:var(--dars-space-2);margin-top:var(--dars-space-1);flex-wrap:wrap;display:flex}.dars-study-practice{gap:var(--dars-space-4);min-height:120px;display:grid}.dars-study-bar-wrap,.dars-study-bar{gap:var(--dars-space-2);display:grid}.dars-study-bar-head{justify-content:space-between;align-items:baseline;gap:var(--dars-space-3);display:flex}.dars-study-bar-label{font-size:var(--dars-fs-sm);color:var(--dars-ink);font-weight:700}.dars-study-bar-pct{font-size:var(--dars-fs-sm);color:var(--dars-brand-text,var(--dars-brand));font-variant-numeric:tabular-nums;font-weight:700}.dars-study-bar-track{border-radius:var(--dars-r-pill);background:var(--dars-line);height:10px;position:relative;overflow:hidden}.dars-study-bar-fill{--dars-study-fill:0;transform-origin:0;transform:scaleX(calc(var(--dars-study-fill) / 100));background:var(--dars-brand);transition:transform .65s cubic-bezier(.22,1,.36,1);position:absolute;inset:0}[dir=rtl] .dars-study-bar-fill{transform-origin:100%}.dars-study-bar-fill:after{content:"";background:linear-gradient(100deg, transparent 30%, color-mix(in srgb, var(--dars-on-primary,#fff) 38%, transparent) 50%, transparent 70%);opacity:.7;background-size:200% 100%;animation:1.6s ease-in-out .2s dars-shimmer;position:absolute;inset:0}.dars-study-bar[data-state=learning] .dars-study-bar-fill{background:var(--dars-primary)}.dars-study-bar[data-state=mastered] .dars-study-bar-fill{background:var(--dars-ok)}.dars-study-unitcard{align-items:center;gap:var(--dars-space-4);text-align:start;background:var(--dars-surface);border:0;border-block-end:1px solid var(--dars-line);width:100%;padding:var(--dars-space-4) var(--dars-space-5);color:var(--dars-ink);cursor:pointer;min-height:44px;transition:background-color var(--dars-dur) var(--dars-ease);display:flex}.dars-study-unitcard:last-child{border-block-end:0}.dars-study-unitcard:hover{background:var(--dars-surface-2)}.dars-study-unitcard:active{background:color-mix(in srgb, var(--dars-brand) 8%, transparent)}.dars-study-unitcard:focus-visible{outline:var(--dars-focus-ring);outline-offset:calc(-1 * var(--dars-focus-offset))}.dars-study-unitcard-main{gap:var(--dars-space-2);flex:auto;min-width:0;display:grid}.dars-study-unitcard-label{font-size:var(--dars-fs-lg);color:var(--dars-ink);text-overflow:ellipsis;white-space:nowrap;font-weight:700;overflow:hidden}.dars-study-unitcard .dars-study-bar-pct{color:var(--dars-muted);font-weight:600}.dars-study-due{border-radius:var(--dars-r-pill);font-size:var(--dars-fs-xs);color:color-mix(in srgb, var(--dars-brand) 35%, var(--dars-ink));background:color-mix(in srgb, var(--dars-brand) 10%, transparent);border:1px solid color-mix(in srgb, var(--dars-brand) 28%, transparent);flex:none;align-items:center;gap:5px;padding:4px 10px;font-weight:700;display:inline-flex}.dars-study-due[data-none=true]{color:var(--dars-muted);background:color-mix(in srgb, var(--dars-muted) 8%, transparent);border-color:var(--dars-line)}.dars-study-due svg{flex:none}.dars-study-due-num{font-variant-numeric:tabular-nums}.dars-study-unitcard-open{color:var(--dars-muted);transition:transform var(--dars-dur) var(--dars-ease), color var(--dars-dur) var(--dars-ease);flex:none;display:inline-flex}.dars-study-unitcard:hover .dars-study-unitcard-open{color:var(--dars-brand-text,var(--dars-brand));transform:translate(2px)}html[dir=rtl] .dars-study-unitcard-open{transform:scaleX(-1)}html[dir=rtl] .dars-study-unitcard:hover .dars-study-unitcard-open{transform:scaleX(-1)translate(2px)}.dars-study-sk{gap:var(--dars-space-5);display:grid}.dars-study-sk-hero{align-items:center;gap:var(--dars-space-6);display:flex}.dars-study-sk-ring{border-radius:50%;flex:none;width:132px;height:132px}.dars-study-sk-lines{gap:var(--dars-space-3);flex:auto;min-width:0;display:grid}.dars-study-sk-line{border-radius:var(--dars-r-sm);height:14px}.dars-study-sk-line.w-70{width:70%}.dars-study-sk-line.w-50{width:50%}.dars-study-sk-line.h-22{height:22px}.dars-study-sk-row{border-radius:var(--dars-r-md);height:56px}.dars-study-sk-bar{border-radius:var(--dars-r-pill);width:60%;height:10px}.dars-study-sk-ring,.dars-study-sk-line,.dars-study-sk-row,.dars-study-sk-bar{background:linear-gradient(100deg, var(--dars-surface-2) 30%, var(--dars-line) 50%, var(--dars-surface-2) 70%);background-size:200% 100%;animation:1.2s ease-in-out infinite dars-shimmer}.dars-study-loader{justify-content:center;align-items:center;gap:var(--dars-space-3);flex-direction:column;display:inline-flex}.dars-study-loader-ring{border:3px solid var(--dars-line);border-top-color:var(--dars-brand);border-inline-start-color:var(--dars-brand);width:40px;height:40px;filter:drop-shadow(0 2px 6px color-mix(in srgb, var(--dars-brand) 35%, transparent));border-radius:50%;animation:.72s linear infinite dars-study-spin}.dars-study-loader-label{font-size:var(--dars-fs-sm);color:var(--dars-muted);font-weight:600}@keyframes dars-study-spin{to{transform:rotate(360deg)}}.dars-study-loader--block{padding:var(--dars-space-7) var(--dars-space-5);justify-content:center;align-items:center;min-height:180px;display:flex}.dars-study button:focus-visible,.dars-study a:focus-visible{outline:var(--dars-focus-ring);outline-offset:var(--dars-focus-offset);border-radius:var(--dars-r-sm)}@media (prefers-reduced-motion:reduce){.dars-study-ring{transition:none;animation:none}.dars-study-bar-fill{transition:none}.dars-study-bar-fill:after{opacity:0;animation:none}.dars-study-resume-cta,.dars-study-resume-cta-arrow,.dars-study-unitcard,.dars-study-unitcard-open{transition:none}.dars-study-unitcard:hover .dars-study-unitcard-open,html[dir=rtl] .dars-study-unitcard:hover .dars-study-unitcard-open{transform:none}html[dir=rtl] .dars-study-unitcard-open{transform:scaleX(-1)}.dars-study-sk-ring,.dars-study-sk-line,.dars-study-sk-row,.dars-study-sk-bar{background:var(--dars-surface-2);animation:none}.dars-study-loader-ring{filter:none;animation:none}}.dars-study{max-width:880px;margin-inline:auto}@media (max-width:619px){.dars-study-hero{align-items:flex-start;gap:var(--dars-space-4);flex-direction:column}.dars-study-sk-hero{align-items:stretch;gap:var(--dars-space-4);flex-direction:column}.dars-study-sk-ring{width:104px;height:104px}}@media (min-width:620px){.dars-study-home{grid-template-columns:minmax(0,1fr)}}.dars-guidance{border-block-start:1px solid var(--dars-line);margin-block-start:var(--dars-space-3);padding-block-start:var(--dars-space-3)}.dars-guidance-toggle{justify-content:space-between;align-items:center;gap:var(--dars-space-2);background:var(--dars-surface-2);inline-size:100%;color:var(--dars-ink);border:1px solid var(--dars-line);border-radius:var(--dars-r-md,12px);padding:var(--dars-space-2) var(--dars-space-3);font:inherit;cursor:pointer;font-weight:600;display:flex}.dars-guidance-toggle-arrow{color:var(--dars-brand-text,var(--dars-brand))}.dars-guidance-body{gap:var(--dars-space-4);margin-block-start:var(--dars-space-3);display:grid}.dars-guidance-block{gap:var(--dars-space-2);display:grid}.dars-guidance-h{color:var(--dars-brand-text,var(--dars-brand));margin:0;font-size:.9rem;font-weight:700}.dars-guidance-slot{color:var(--dars-ink);line-height:1.75}.dars-guidance-refs,.dars-guidance-chips{gap:var(--dars-space-2);flex-wrap:wrap;margin:0;padding:0;list-style:none;display:flex}.dars-guidance-ref{align-items:baseline;gap:var(--dars-space-1,4px);background:var(--dars-surface);border:1px solid var(--dars-line);border-radius:var(--dars-r-pill,999px);color:var(--dars-ink);padding:6px 12px;text-decoration:none;display:inline-flex}.dars-guidance-ref:hover{border-color:var(--dars-brand)}.dars-guidance-ref-page{color:var(--dars-muted,#999);font-size:.8rem}.dars-guidance-chip{background:var(--dars-surface);border:1px solid var(--dars-line);border-radius:var(--dars-r-pill,999px);padding:6px 12px;font-size:.9rem}.dars-guidance-table-wrap{overflow-x:auto}.dars-guidance-table-title{margin:0 0 var(--dars-space-1,4px);font-size:.88rem;font-weight:600}.dars-guidance-table{border-collapse:collapse;inline-size:100%;font-size:.9rem}.dars-guidance-table th,.dars-guidance-table td{border:1px solid var(--dars-line);text-align:start;padding:6px 10px}.dars-guidance-table th{background:var(--dars-surface-2);font-weight:700}.dars-guidance-terms{gap:var(--dars-space-2);margin:0;display:grid}.dars-guidance-term dt{font-weight:700}.dars-guidance-term dd{color:var(--dars-ink);opacity:.9;margin:0}