:root{--navy: #1e1b4b;--indigo: #312e81;--indigo-600: #4338ca;--blue: #2563eb;--blue-50: #eff6ff;--teal: #0d9488;--teal-400: #2dd4bf;--teal-50: #f0fdfa;--ink: #0f172a;--ink-2: #334155;--muted: #64748b;--line: #e2e8f0;--line-2: #cbd5e1;--bg: #ffffff;--bg-soft: #f8fafc;--bg-tint: #f5f7ff;--ok: #059669;--ok-bg: #ecfdf5;--bad: #dc2626;--bad-bg: #fef2f2;--warn: #b45309;--warn-bg: #fffbeb;--radius: 14px;--radius-sm: 10px;--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 4px 16px rgba(30, 27, 75, .06);--shadow-lg: 0 10px 40px rgba(30, 27, 75, .14);--font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-head: "Plus Jakarta Sans", var(--font);--focus: 0 0 0 3px rgba(37, 99, 235, .35)}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.55;font-size:16px;overflow-x:hidden}img{max-width:100%;height:auto}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{font-family:var(--font-head);color:var(--navy);line-height:1.2;margin:0 0 .5rem;letter-spacing:-.01em}h1{font-size:clamp(1.55rem,1.2rem + 1.6vw,2.2rem)}h2{font-size:clamp(1.15rem,1.05rem + .5vw,1.4rem)}p{margin:0 0 .75rem}code{font-size:.88em;background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:0 .3em}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.88em}.muted{color:var(--muted)}.small{font-size:.875rem}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.clamp-1,.clamp-2,.clamp-3{display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}.clamp-1{-webkit-line-clamp:1}.clamp-2{-webkit-line-clamp:2}.clamp-3{-webkit-line-clamp:3}:focus-visible{outline:none;box-shadow:var(--focus);border-radius:6px}.skip-link{position:absolute;left:-999px;top:8px;background:var(--navy);color:#fff;padding:.5rem 1rem;border-radius:8px;z-index:100}.skip-link:focus{left:8px}main:focus{outline:none}.container{width:100%;max-width:1180px;margin:0 auto;padding:0 16px}@media (min-width: 768px){.container{padding:0 24px}}.narrow{max-width:860px}.section{padding:28px 16px}.container.section{padding-top:24px;padding-bottom:40px}@media (min-width: 768px){.container.section{padding-left:24px;padding-right:24px}}.section-tint{background:var(--bg-tint);padding:32px 0}.block{margin-top:32px}.spacer{flex:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;font:600 .95rem/1 var(--font);padding:.72rem 1.1rem;min-height:44px;border-radius:10px;border:1px solid transparent;cursor:pointer;text-decoration:none!important;transition:background .15s,border-color .15s,color .15s,transform .05s;white-space:nowrap}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--indigo),var(--blue));color:#fff;box-shadow:0 2px 8px #2563eb40}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,var(--navy),var(--indigo-600))}.btn-outline{background:#fff;color:var(--indigo);border-color:var(--line-2)}.btn-outline:hover:not(:disabled){border-color:var(--indigo-600);background:var(--bg-tint)}.btn-ghost{background:transparent;color:var(--ink-2)}.btn-ghost:hover:not(:disabled){background:var(--bg-soft)}.btn-danger{background:var(--bad);color:#fff}.btn-sm{min-height:36px;padding:.5rem .8rem;font-size:.875rem}.btn-lg{min-height:50px;padding:.9rem 1.4rem;font-size:1rem}.btn-block{width:100%;white-space:normal;text-align:center}.icon-btn{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:9px;border:1px solid transparent;background:transparent;color:var(--ink-2);cursor:pointer}.icon-btn:hover:not(:disabled){background:var(--bg-soft);border-color:var(--line)}.icon-btn.danger:hover{color:var(--bad);background:var(--bad-bg)}.icon-btn:disabled{opacity:.35;cursor:default}.linkish{background:none;border:0;color:var(--blue);cursor:pointer;padding:0;font:inherit;display:inline-flex;align-items:center;gap:.35rem}.action-row{display:flex;flex-wrap:wrap;gap:.6rem;margin:1rem 0}.action-row.center{justify-content:center}.site-header{position:sticky;top:0;z-index:40;background:#ffffffeb;-webkit-backdrop-filter:saturate(180%) blur(10px);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}.header-row{display:flex;align-items:center;gap:1rem;min-height:64px}.logo{display:inline-flex;align-items:center;gap:.6rem;text-decoration:none!important;flex-shrink:0}.logo-text{display:flex;flex-direction:column;line-height:1.05}.logo-name{font:800 1.3rem var(--font-head);color:var(--navy);letter-spacing:-.02em}.logo-name span{background:linear-gradient(90deg,var(--blue),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}.logo-tag{font-size:.68rem;color:var(--muted);font-weight:500;margin-top:2px}.main-nav{display:none;gap:.25rem;margin-left:.5rem}.main-nav a{color:var(--ink-2);font-weight:500;padding:.5rem .75rem;border-radius:8px;text-decoration:none;font-size:.95rem}.main-nav a:hover,.main-nav a.active{background:var(--bg-tint);color:var(--indigo)}.header-tools{margin-left:auto;display:flex;align-items:center;gap:.5rem}.menu-btn{display:inline-grid;place-items:center;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--navy);cursor:pointer}.hide-sm{display:none!important}.mobile-nav{border-top:1px solid var(--line);background:#fff;padding:12px 0 16px;box-shadow:var(--shadow)}.mobile-nav .container{display:flex;flex-direction:column;gap:2px}.mobile-nav a{padding:.75rem .5rem;color:var(--ink);font-weight:500;border-radius:8px;text-decoration:none}.mobile-nav a.active{color:var(--indigo);background:var(--bg-tint)}.mobile-nav .searchbox{margin-bottom:8px}@media (min-width: 1024px){.main-nav{display:flex}.menu-btn{display:none}.hide-sm{display:inline-flex!important}}@media (max-width: 380px){.logo-tag{display:none}.logo-name{font-size:1.15rem}}.searchbox{display:flex;align-items:stretch;background:#fff;border:1px solid var(--line-2);border-radius:10px;overflow:hidden;min-width:0}.searchbox:focus-within{border-color:var(--blue);box-shadow:var(--focus)}.searchbox input{flex:1;min-width:0;border:0;padding:.55rem .8rem;font:inherit;font-size:.95rem;background:transparent;outline:none}.searchbox button{border:0;background:transparent;color:var(--indigo);padding:0 .8rem;cursor:pointer}.searchbox.big{border-radius:14px;box-shadow:var(--shadow);margin:1.2rem 0}.searchbox.big input{padding:.95rem 1.1rem;font-size:1rem}.searchbox.big button{background:linear-gradient(135deg,var(--indigo),var(--blue));color:#fff;padding:0 1.2rem}.header-tools .searchbox{width:200px}.demo-banner{background:var(--warn-bg);color:#78350f;border-bottom:1px solid #fde68a;font-size:.85rem;padding:.55rem 16px;text-align:center}.notice{background:var(--blue-50);border:1px solid #bfdbfe;color:#1e3a8a;border-radius:var(--radius-sm);padding:.7rem .9rem;font-size:.9rem;margin:.75rem 0}.notice.ok{background:var(--ok-bg);border-color:#a7f3d0;color:#065f46}.notice.err{background:var(--bad-bg);border-color:#fecaca;color:#991b1b}.toasts{position:fixed;z-index:200;bottom:16px;left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:8px;width:min(92vw,420px)}.toast{background:var(--navy);color:#fff;padding:.8rem 1rem;border-radius:12px;box-shadow:var(--shadow-lg);font-size:.92rem;animation:pop .2s ease}.toast-error{background:#991b1b}.toast-info{background:var(--indigo-600)}@keyframes pop{0%{opacity:0;transform:translateY(8px)}}.hero{background:radial-gradient(1200px 400px at 50% -10%,#e0e7ff 0%,transparent 70%),linear-gradient(180deg,#f5f7ff,#fff);border-bottom:1px solid var(--line)}.hero-inner{text-align:center;padding:40px 16px 36px;max-width:820px}@media (min-width: 768px){.hero-inner{padding:64px 24px 56px}}.pill{display:inline-block;max-width:100%;background:#fff;border:1px solid #c7d2fe;color:var(--indigo);font-size:.8rem;font-weight:600;padding:.35rem .8rem;border-radius:999px;margin-bottom:1rem}.hero h1{font-size:clamp(1.9rem,1.3rem + 3vw,3.1rem);font-weight:800}.grad{background:linear-gradient(90deg,var(--indigo-600),var(--blue) 60%,var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}.lead{font-size:clamp(1rem,.95rem + .3vw,1.15rem);color:var(--ink-2);max-width:640px;margin:.5rem auto 0}.hero-cta{display:flex;gap:.7rem;justify-content:center;flex-wrap:wrap}.hero-cta .btn{flex:1 1 200px;max-width:260px}.hero-points{list-style:none;padding:0;margin:1.4rem 0 0;display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem 1.25rem;color:var(--ink-2);font-size:.9rem}.hero-points li{display:inline-flex;align-items:center;gap:.35rem}.hero-points svg{color:var(--teal)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}.section-head h2{margin:0;display:flex;align-items:center;gap:.4rem}.link-more{display:inline-flex;align-items:center;gap:.25rem;font-weight:600;font-size:.9rem;white-space:nowrap}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.grid-cards{display:grid;gap:12px;grid-template-columns:1fr}@media (min-width: 600px){.grid-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width: 1024px){.grid-cards{grid-template-columns:repeat(4,minmax(0,1fr))}}.grid-compact{display:grid;gap:10px;grid-template-columns:repeat(2,minmax(0,1fr))}@media (min-width: 768px){.grid-compact{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width: 1024px){.grid-compact{grid-template-columns:repeat(4,minmax(0,1fr))}}.grid-sets{display:grid;gap:14px;grid-template-columns:1fr}@media (min-width: 600px){.grid-sets{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width: 1024px){.grid-sets{grid-template-columns:repeat(3,minmax(0,1fr))}}.icon-tile{display:inline-grid;place-items:center;width:46px;height:46px;border-radius:12px;flex-shrink:0}.subject-card,.exam-card{display:flex;align-items:center;gap:14px;text-decoration:none!important;color:inherit;position:relative;transition:border-color .15s,box-shadow .15s,transform .15s;padding:14px 16px}.subject-card:hover,.exam-card:hover,.set-card:hover,.mode-card:hover{border-color:#a5b4fc;box-shadow:var(--shadow-lg);transform:translateY(-1px)}.subject-card-body{display:flex;flex-direction:column;min-width:0;flex:1}.subject-card-title,.set-card-title{font:700 1rem var(--font-head);color:var(--navy);overflow-wrap:anywhere}.subject-card .arrow,.exam-card .arrow{color:var(--line-2);flex-shrink:0;transition:color .15s}.subject-card:hover .arrow,.exam-card:hover .arrow{color:var(--blue)}.subject-card.compact{padding:10px 12px;gap:10px}.subject-card.compact .icon-tile{width:36px;height:36px;border-radius:10px}.subject-card.compact .icon-tile svg{width:18px;height:18px}.subject-card.compact .subject-card-title{font-size:.9rem;overflow-wrap:anywhere}.subject-card.compact .arrow{display:none}.exam-card{flex-direction:column;align-items:flex-start;gap:2px;padding-right:40px}.exam-card .arrow{position:absolute;right:14px;top:50%;transform:translateY(-50%)}.set-card{display:flex;flex-direction:column;gap:6px;text-decoration:none!important;color:inherit;transition:border-color .15s,box-shadow .15s,transform .15s}.eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--teal)}.set-meta{display:flex;flex-wrap:wrap;gap:.4rem 1rem;color:var(--ink-2);font-size:.85rem;margin-top:auto;padding-top:6px}.set-meta span{display:inline-flex;align-items:center;gap:.3rem}.set-meta.big{font-size:.95rem;margin:1rem 0}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{display:inline-flex;align-items:center;gap:.3rem;padding:.45rem .85rem;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:.9rem;font-weight:500;text-decoration:none!important}.chip:hover{border-color:#a5b4fc;color:var(--indigo);background:var(--bg-tint)}.cat-jump{margin-bottom:1rem}.cat-section{padding-top:12px;padding-bottom:12px}.cat-block{margin-top:28px;scroll-margin-top:80px}.cat-block h2{display:flex;align-items:center;gap:.5rem}.count{font:600 .75rem var(--font);background:var(--bg-tint);color:var(--indigo);border-radius:999px;padding:.15rem .55rem}.recent-list{display:grid;gap:10px}.q-preview{display:flex;flex-direction:column;gap:4px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--ink);text-decoration:none!important;background:#fff}.q-preview:hover{border-color:#a5b4fc}.crumbs ol{list-style:none;margin:0 0 14px;padding:0;display:flex;flex-wrap:wrap;align-items:center;gap:4px;font-size:.85rem;color:var(--muted)}.crumbs li{display:inline-flex;align-items:center;gap:4px}.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--blue)}.crumbs [aria-current]{color:var(--ink-2);font-weight:500}.page-head{margin-bottom:1rem}.filter-input,.input{width:100%;font:inherit;font-size:.95rem;padding:.65rem .8rem;border:1px solid var(--line-2);border-radius:10px;background:#fff;color:var(--ink);min-height:44px}.input:focus{outline:none;border-color:var(--blue);box-shadow:var(--focus)}textarea.input{resize:vertical;min-height:80px}select.input{padding-right:2rem}.filter-input{max-width:360px;margin-top:.5rem}.entity-head{display:flex;gap:16px;align-items:flex-start}.entity-head .icon-tile{width:60px;height:60px;border-radius:16px}.meta-line{font-size:.88rem;color:var(--ink-2);font-weight:500}.topic-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}@media (min-width: 768px){.topic-list{grid-template-columns:repeat(2,minmax(0,1fr))}}.topic-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--ink);text-decoration:none!important;background:#fff}.topic-row>span{display:flex;flex-direction:column}.topic-row:hover{border-color:#a5b4fc;background:var(--bg-tint)}.topic-row svg{color:var(--muted);flex-shrink:0}.state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:.5rem;padding:48px 16px;color:var(--muted)}.state h3{color:var(--navy);margin:.25rem 0 0}.state p{max-width:460px;margin:0 0 .5rem}.state-empty{border:1px dashed var(--line-2);border-radius:var(--radius);background:var(--bg-soft);padding:36px 16px}.state-error svg{color:var(--bad)}.spinner{width:28px;height:28px;border:3px solid var(--line);border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.q-stack{display:grid;gap:14px;margin-top:1rem}.q-study,.q-review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;scroll-margin-top:80px}.q-review.correct{border-left:4px solid var(--ok)}.q-review.incorrect{border-left:4px solid var(--bad)}.q-review.unanswered{border-left:4px solid var(--line-2)}.q-head{display:flex;align-items:center;gap:.6rem;margin-bottom:.5rem}.q-num{font-weight:700;color:var(--indigo);font-size:.9rem}.q-text{font:600 1.05rem/1.5 var(--font);color:var(--ink);margin:0 0 .9rem;white-space:pre-wrap;overflow-wrap:anywhere}.q-img{display:block;max-height:320px;border-radius:10px;border:1px solid var(--line);margin-bottom:.9rem}.diff{font-size:.72rem;font-weight:700;padding:.15rem .55rem;border-radius:999px;text-transform:uppercase;letter-spacing:.04em}.diff-easy{background:var(--ok-bg);color:var(--ok)}.diff-medium{background:var(--warn-bg);color:var(--warn)}.diff-hard{background:var(--bad-bg);color:var(--bad)}.opt-list{list-style:none;padding:0;margin:0 0 .8rem;display:grid;gap:8px}.opt-static{display:flex;align-items:center;gap:.7rem;padding:.6rem .75rem;border:1px solid var(--line);border-radius:10px;overflow-wrap:anywhere}.opt-static.correct{border-color:#6ee7b7;background:var(--ok-bg)}.opt-static.wrong{border-color:#fca5a5;background:var(--bad-bg)}.opt-static .you{margin-left:auto;font-size:.72rem;font-weight:700;color:var(--ink-2);white-space:nowrap}.opt-letter{display:inline-grid;place-items:center;width:30px;height:30px;flex-shrink:0;border-radius:8px;background:var(--bg-tint);color:var(--indigo);font-weight:700;font-size:.85rem}.opt-mark{margin-left:auto;flex-shrink:0}.correct .opt-mark{color:var(--ok)}.explain{background:var(--teal-50);border:1px solid #99f6e4;border-radius:10px;padding:.75rem .9rem;margin-top:.6rem;font-size:.95rem}.explain p{margin:.3rem 0 0}.state-tag{font-size:.72rem;font-weight:700;text-transform:uppercase;padding:.15rem .55rem;border-radius:999px;background:var(--bg-soft);color:var(--muted)}.state-tag.correct{background:var(--ok-bg);color:var(--ok)}.state-tag.incorrect{background:var(--bad-bg);color:var(--bad)}.pager{display:flex;align-items:center;justify-content:center;gap:1rem;margin:1.25rem 0;font-size:.9rem;color:var(--ink-2)}.play-top{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;flex-wrap:wrap}.play-title{font-size:clamp(1.2rem,1rem + 1vw,1.6rem);margin-bottom:.3rem}.mode-badge{display:inline-block;font-size:.75rem;font-weight:700;padding:.2rem .6rem;border-radius:999px;background:var(--teal-50);color:var(--teal)}.mode-badge.test{background:#eef2ff;color:var(--indigo-600)}.timer{display:inline-flex;align-items:center;gap:.4rem;font:700 1rem var(--font);font-variant-numeric:tabular-nums;padding:.5rem .85rem;border-radius:10px;background:var(--bg-tint);color:var(--indigo)}.timer.urgent{background:var(--bad-bg);color:var(--bad)}.progress{height:8px;background:var(--line);border-radius:999px;overflow:hidden;margin:1rem 0 .35rem}.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--teal));border-radius:inherit;transition:width .25s}.play-grid{display:grid;gap:16px;margin-top:.5rem}@media (min-width: 900px){.play-grid{grid-template-columns:minmax(0,1fr) 280px;align-items:start}.palette{position:sticky;top:80px}}.q-card{padding:18px}@media (min-width: 768px){.q-card{padding:26px}}.opts{display:grid;gap:10px}.opt{display:flex;align-items:center;gap:.8rem;width:100%;text-align:left;font:inherit;font-size:1rem;color:var(--ink);padding:.8rem .9rem;min-height:54px;border:1.5px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;transition:border-color .12s,background .12s;overflow-wrap:anywhere}.opt:hover:not(:disabled){border-color:#a5b4fc;background:var(--bg-tint)}.opt.selected{border-color:var(--blue);background:var(--blue-50)}.opt.selected .opt-letter{background:var(--blue);color:#fff}.opt.correct{border-color:var(--ok);background:var(--ok-bg)}.opt.correct .opt-letter{background:var(--ok);color:#fff}.opt.wrong{border-color:var(--bad);background:var(--bad-bg)}.opt.wrong .opt-letter{background:var(--bad);color:#fff}.opt.wrong .opt-mark{color:var(--bad)}.opt:disabled{cursor:default}.opt-text{flex:1}.feedback{margin-top:14px;border-radius:12px;padding:.85rem 1rem}.feedback.ok{background:var(--ok-bg);border:1px solid #a7f3d0}.feedback.ok strong{color:var(--ok)}.feedback.bad{background:var(--bad-bg);border:1px solid #fecaca}.feedback.bad strong{color:var(--bad)}.feedback p{margin:.35rem 0 0}.q-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}@media (max-width: 480px){.q-actions .spacer{flex-basis:100%;height:0}.q-actions .btn-outline,.q-actions .btn-primary{flex:1}}.palette-title{font-size:1rem}.palette-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:6px;margin-bottom:12px}.pal{display:inline-grid;place-items:center;height:40px;min-width:22px;border-radius:9px;border:1.5px solid var(--line);background:#fff;font:600 .85rem var(--font);color:var(--ink-2);cursor:pointer;position:relative}.legend .pal{width:18px;height:18px;min-width:18px;border-radius:5px;vertical-align:middle;margin-right:4px}.pal.p-answered{background:var(--blue-50);border-color:var(--blue);color:var(--blue)}.pal.p-correct{background:var(--ok-bg);border-color:var(--ok);color:var(--ok)}.pal.p-wrong{background:var(--bad-bg);border-color:var(--bad);color:var(--bad)}.pal.p-marked:after{content:"";position:absolute;top:3px;right:3px;width:7px;height:7px;border-radius:50%;background:#f59e0b}.legend .pal.p-marked{background:#fff7ed;border-color:#f59e0b}.legend .pal.p-marked:after{display:none}.pal.p-current{box-shadow:0 0 0 2px var(--indigo-600)}.legend{list-style:none;padding:0;margin:0 0 14px;display:flex;flex-wrap:wrap;gap:.35rem .9rem}.result-card{text-align:center;padding:28px 18px}.trophy{color:#f59e0b}.score-big{display:inline-flex;flex-direction:column;align-items:center;margin:.6rem 0 1rem}.score-big span{font:800 3rem/1 var(--font-head);background:linear-gradient(90deg,var(--indigo-600),var(--blue),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}.score-big small{color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.08em;font-size:.72rem}.stat-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:0 0 1rem}@media (min-width: 600px){.stat-row{grid-template-columns:repeat(4,minmax(0,1fr))}}.stat{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:12px;display:flex;flex-direction:column;align-items:center}.stat strong{font:800 1.5rem var(--font-head);color:var(--navy)}.stat span{font-size:.8rem;color:var(--muted)}.stat.ok strong{color:var(--ok)}.stat.bad strong{color:var(--bad)}.seg{display:inline-flex;flex-wrap:wrap;background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:3px}.seg button{border:0;background:transparent;font:600 .85rem var(--font);padding:.45rem .7rem;border-radius:8px;color:var(--ink-2);cursor:pointer}.seg button.on{background:#fff;color:var(--indigo);box-shadow:var(--shadow)}.start-card{padding:24px}.mode-choice{display:grid;gap:12px;margin:1rem 0}@media (min-width: 600px){.mode-choice{grid-template-columns:repeat(2,minmax(0,1fr))}}.mode-card{display:flex;flex-direction:column;gap:6px;padding:18px;border:1.5px solid var(--line);border-radius:var(--radius);color:var(--ink);text-decoration:none!important;transition:all .15s}.mode-card svg{color:var(--blue)}.mode-card strong{font-family:var(--font-head);color:var(--navy)}.auth-wrap{display:grid;place-items:center}.auth-card{width:100%;max-width:420px;display:flex;flex-direction:column;gap:.8rem;padding:28px 22px}.auth-card h1{font-size:1.45rem;margin:.4rem 0 0}.auth-links{display:flex;gap:1rem;justify-content:space-between;flex-wrap:wrap}.field{display:flex;flex-direction:column;gap:.35rem;margin:0 0 .9rem;border:0;padding:0;min-width:0}.field>span,.field>legend,.field>label{font-weight:600;font-size:.88rem;color:var(--ink-2);padding:0}.field em{color:var(--bad);font-style:normal}.field.has-error .input{border-color:var(--bad)}.err-text{color:var(--bad);font-size:.82rem}.ok-text{color:var(--ok);font-weight:600}.warn-text{color:var(--warn)}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;-webkit-overflow-scrolling:touch}.table-wrap.tall{max-height:460px;overflow-y:auto}.table{width:100%;border-collapse:collapse;font-size:.9rem}.table th{text-align:left;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);background:var(--bg-soft);padding:.7rem .8rem;border-bottom:1px solid var(--line);white-space:nowrap;position:sticky;top:0;z-index:1}.table td{padding:.7rem .8rem;border-bottom:1px solid var(--line);vertical-align:middle}.table tr:last-child td{border-bottom:0}.table tr:hover td{background:#fafbff}.q-cell{min-width:260px;max-width:460px}.q-cell a{color:var(--ink);font-weight:500}.row-actions{white-space:nowrap;text-align:right}.row-invalid td{background:#fff8f8}.row-duplicate td{background:#fffdf5}.cell-with-icon{display:flex;align-items:center;gap:.6rem}.cell-with-icon .icon-tile{width:34px;height:34px;border-radius:9px}.site-footer{background:var(--navy);color:#c7d2fe;margin-top:48px;padding:40px 0 20px}.site-footer .logo-name{color:#fff}.site-footer .logo-tag{color:#a5b4fc}.footer-grid{display:grid;gap:28px;grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid>div:first-child{grid-column:1 / -1}@media (min-width: 900px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}.footer-grid>div:first-child{grid-column:auto}}.footer-grid a{display:block;color:#c7d2fe;padding:.25rem 0;font-size:.92rem}.footer-grid a:hover{color:#fff}.footer-h{color:#fff;font-size:.95rem;margin-bottom:.5rem}.footer-about{color:#a5b4fc!important;margin-top:.8rem;max-width:380px}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:28px;padding-top:16px;color:#a5b4fc!important}.prose p{color:var(--ink-2);max-width:70ch}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a80;z-index:100;display:grid;place-items:center;padding:12px;animation:fade .15s}@keyframes fade{0%{opacity:0}}.modal{background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);width:100%;max-width:480px;max-height:calc(100vh - 24px);display:flex;flex-direction:column;outline:none}.modal.wide{max-width:760px}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:16px 18px;border-bottom:1px solid var(--line)}.modal-head h2{margin:0;font-size:1.15rem}.modal-body{padding:18px;overflow-y:auto}.form-actions{display:flex;justify-content:flex-end;align-items:center;gap:.6rem;flex-wrap:wrap;margin-top:1rem}.form-actions.sticky{position:sticky;bottom:0;background:#fff;padding:12px 0 4px;border-top:1px solid var(--line)}.confirm-text p{color:var(--ink-2)}.admin{display:flex;flex-direction:column;min-height:100vh;background:var(--bg-soft)}.admin-side{background:var(--navy);color:#c7d2fe;padding:14px 16px;display:flex;flex-direction:column;gap:10px}.admin-side .logo-name{color:#fff}.admin-label{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--teal-400)}.admin-side nav{display:flex;flex-wrap:wrap;gap:4px}.admin-side nav a{display:inline-flex;align-items:center;gap:.4rem;padding:.45rem .6rem;border-radius:9px;color:#c7d2fe;font-weight:500;font-size:.9rem;white-space:nowrap;text-decoration:none}.admin-side nav a:hover{background:#ffffff12;color:#fff}.admin-side nav a.active{background:#ffffff1f;color:#fff}.admin-side-foot{display:flex;gap:1rem;font-size:.85rem}.admin-side-foot a,.admin-side-foot .linkish{color:#a5b4fc;display:inline-flex;align-items:center;gap:.35rem}.admin-main{flex:1;min-width:0}.admin-content{padding:18px 14px 48px;max-width:1200px;margin:0 auto}@media (min-width: 1024px){.admin{flex-direction:row}.admin-side{width:240px;flex-shrink:0;position:sticky;top:0;height:100vh;padding:20px 14px}.admin-side nav{flex-direction:column;flex-wrap:nowrap;margin-top:10px}.admin-side nav a{padding:.55rem .75rem;font-size:.92rem}.admin-side-foot{margin-top:auto;flex-direction:column;gap:.6rem}.admin-content{padding:28px 32px 60px}}.admin-head{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;flex-wrap:wrap;margin-bottom:18px}.admin-head h1{font-size:1.5rem;margin:0}.admin-head-actions{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.admin .card{margin-bottom:16px}.admin .card h2{font-size:1.05rem}.stat-grid{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr));margin-bottom:16px}@media (min-width: 768px){.stat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width: 1200px){.stat-grid{grid-template-columns:repeat(6,minmax(0,1fr))}}.stat-card{display:flex;flex-direction:column;gap:2px;text-decoration:none!important;color:inherit;margin:0!important}.stat-card strong{font:800 1.8rem var(--font-head);color:var(--navy)}.stat-card:hover{border-color:#a5b4fc}.admin-two{display:grid;gap:16px;grid-template-columns:minmax(0,1fr)}.admin-two>*,.stat-grid>*{min-width:0}@media (min-width: 1024px){.admin-two{grid-template-columns:repeat(2,minmax(0,1fr))}}.recent-updates{list-style:none;padding:0;margin:0}.recent-updates li{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.6rem 0;border-bottom:1px solid var(--line)}.recent-updates li:last-child{border-bottom:0}.recent-updates a{display:flex;flex-direction:column;min-width:0;color:var(--ink)}.quick{display:grid;gap:8px}.badge{display:inline-block;font-size:.72rem;font-weight:700;padding:.18rem .55rem;border-radius:999px;white-space:nowrap}.badge-published{background:var(--ok-bg);color:var(--ok)}.badge-draft{background:var(--warn-bg);color:var(--warn)}.badge-archived{background:#f1f5f9;color:var(--muted)}.filters{display:grid;gap:8px;grid-template-columns:repeat(2,minmax(0,1fr));margin-bottom:14px}.filters>.input:first-child{grid-column:1 / -1}@media (max-width: 340px){.filters{grid-template-columns:minmax(0,1fr)}}@media (min-width: 1024px){.filters{display:flex;flex-wrap:wrap}.filters .input{width:auto;min-width:160px;flex:0 1 auto}.filters .input:first-child,.filters .grow{flex:1 1 240px}}.form-card{padding:20px}.form-row{display:grid;gap:0 14px;grid-template-columns:1fr}@media (min-width: 700px){.form-row{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}}.options-field{margin-bottom:1rem}.opt-input{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:8px 10px;padding:6px;border-radius:12px;border:1.5px solid transparent;margin-bottom:6px}.opt-input.is-correct{border-color:var(--ok);background:var(--ok-bg)}.opt-input .err-text{grid-column:2}.opt-input.has-error .input{border-color:var(--bad)}.opt-radio{display:inline-flex;align-items:center;gap:6px;cursor:pointer}.opt-radio input{width:20px;height:20px;accent-color:var(--ok)}.is-correct .opt-letter{background:var(--ok);color:#fff}.check-grid{display:grid;gap:6px;grid-template-columns:1fr}@media (min-width: 600px){.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.check{display:flex;align-items:flex-start;gap:.55rem;cursor:pointer;font-size:.92rem;padding:.35rem 0}.check input{width:18px;height:18px;margin-top:2px;flex-shrink:0;accent-color:var(--blue)}.check>span{display:flex;flex-direction:column;min-width:0}.icon-pick{display:flex;align-items:center;gap:.6rem}.pick-list{list-style:none;padding:0;margin:0;max-height:520px;overflow-y:auto;border-top:1px solid var(--line)}.pick-list li{border-bottom:1px solid var(--line);padding:.3rem .2rem}.picked-list{padding-left:1.5rem;margin:0;max-height:560px;overflow-y:auto}.picked-list li{padding:.45rem 0;border-bottom:1px solid var(--line)}.picked-list li{display:list-item}.picked-list li>span:first-child{display:-webkit-box}.picked-list .row-actions{display:flex;justify-content:flex-end;gap:2px}.dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.4rem;padding:28px 16px;border:2px dashed var(--line-2);border-radius:var(--radius);background:var(--bg-soft);color:var(--indigo);cursor:pointer;font-weight:600;text-align:center;overflow-wrap:anywhere}.dropzone:hover,.dropzone:focus-within{border-color:var(--blue);background:var(--bg-tint)}.dropzone input{position:absolute;width:1px;height:1px;opacity:0}.import-summary{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.import-summary button{display:inline-flex;align-items:center;gap:.35rem;border:1px solid var(--line);background:#fff;border-radius:999px;padding:.4rem .8rem;font:600 .85rem var(--font);cursor:pointer;color:var(--ink-2)}.import-summary button.on{border-color:var(--indigo-600);background:var(--bg-tint);color:var(--indigo)}.import-summary .ok svg{color:var(--ok)}.import-summary .bad svg{color:var(--bad)}.import-summary .warn svg{color:var(--warn)}.bullets{padding-left:1.2rem}.bullets li{margin:.2rem 0}.gate{max-width:520px;margin:40px auto;text-align:center;padding:28px}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}.sv-section{padding-top:28px;padding-bottom:8px}.sv-section+.sv-section{border-top:1px solid var(--line)}.sv-tint{background:var(--bg-tint);padding-bottom:32px}.sv-head{display:flex;align-items:flex-end;justify-content:space-between;gap:.75rem 1rem;margin-bottom:16px;flex-wrap:wrap}.sv-head>div{min-width:0;flex:1 1 260px;padding-left:14px;border-left:4px solid var(--teal)}.sv-head h2{margin:0 0 .2rem;font-size:clamp(1.2rem,1.05rem + .7vw,1.55rem);font-weight:800}.sv-head p{margin:0;color:var(--muted);font-size:.92rem}.sv-grid{display:grid;gap:10px;grid-template-columns:1fr}@media (min-width: 640px){.sv-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}}@media (min-width: 1024px){.sv-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}.sv-grid .subject-card{height:100%;min-height:84px}.subject-card-sub{color:var(--muted);font-size:.84rem;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:1px}.sv-count{font-size:.75rem;font-weight:600;color:var(--teal);margin-top:4px}.sv-count.soon{color:var(--muted);font-weight:500}.subject-card .chev{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:999px;background:var(--bg-soft);color:var(--muted);flex-shrink:0;transition:background .15s,color .15s}.subject-card:hover .chev,.subject-card:focus-visible .chev{background:var(--indigo-600);color:#fff}.subject-card:focus-visible{outline:none;box-shadow:var(--focus);border-color:var(--blue)}.subject-card.compact .chev{display:none}.exam-tag{display:inline-block;vertical-align:2px;margin-left:4px;font:700 .62rem var(--font);letter-spacing:.06em;text-transform:uppercase;color:var(--indigo-600);background:#eef2ff;border-radius:6px;padding:.1rem .4rem}.set-go{margin-left:auto;color:var(--indigo-600)}@media (max-width: 380px){.subject-card{padding:12px;gap:12px}.subject-card .icon-tile{width:40px;height:40px}.subject-card .chev{width:28px;height:28px}}.section.sv-section{padding:26px 0 30px;background:#f6f7fb}.sv-section+.sv-section{border-top:1px solid #e6e9f2}.sv-tint{background:#eef2ff!important}.sv-hero{background:linear-gradient(180deg,#e8edfb,#eef2fb);padding:22px 0 26px;text-align:center;border-bottom:1px solid #e3e8f4}.sv-hero h1{font-size:clamp(1.6rem,1.2rem + 2.4vw,2.7rem);font-weight:800;margin:0 0 .45rem}.sv-hero-lead{color:var(--muted);max-width:680px;margin:0 auto 8px;font-size:.98rem}.sv-hero-tag{font-weight:700;color:var(--indigo-600);margin:0 auto 18px;font-size:1rem}.sv-search-card{background:#fff;border-radius:18px;box-shadow:0 6px 24px #1e1b4b14;padding:18px 16px 20px;max-width:680px;margin:0 auto}.sv-search-card h2{font-size:1.12rem;font-weight:700;margin:0 0 12px;color:var(--ink)}.sv-search-card .searchbox.big{border-radius:12px}.sv-search-card .searchbox.big button{background:linear-gradient(135deg,#2563eb,#1d4ed8);padding:0 1.25rem}.sv-start{margin:16px auto 0;width:100%;max-width:680px}.sv-head{display:block;margin-bottom:16px}.sv-head>div{all:unset}.sv-banner{display:block;margin:0 0 12px!important;padding:15px 20px;border-radius:14px;color:#fff!important;font-size:clamp(1.12rem,1rem + .6vw,1.4rem)!important;font-weight:800;background:linear-gradient(110deg,#312e81,#2563eb 62%,#0d9488 130%);box-shadow:0 8px 20px #2563eb38}.sv-head p{margin:0;color:var(--muted);font-size:.95rem;line-height:1.5;padding:0 2px}.sv-grid{gap:12px}.subject-card.simple{padding:16px 18px;gap:16px;min-height:0;border-radius:16px;border-color:#e3e7ef;box-shadow:none;background:#fff}.subject-card.simple:hover{box-shadow:0 6px 20px #1e1b4b14;border-color:#c7d2fe}.subject-card.simple .icon-tile{width:52px;height:52px;border-radius:14px}.subject-card.simple .subject-card-title{font:600 1.08rem var(--font);color:var(--ink)}.subject-card.simple .subject-card-sub{-webkit-line-clamp:1;font-size:.87rem;margin-top:3px}.subject-card.simple .arrow{color:#94a3b8}.subject-card.simple:hover .arrow{color:var(--blue)}.demo-banner{font-size:.78rem;padding:.35rem 12px;line-height:1.35}@media (max-width: 380px){.subject-card.simple{padding:14px;gap:12px}.subject-card.simple .icon-tile{width:46px;height:46px}}.sv-search-card .searchbox.big{margin:0!important;max-width:none}.subject-card.simple .subject-card-sub{-webkit-line-clamp:2}.sv-grid .subject-card.simple{min-height:86px}.drawer-root{position:fixed;top:0;right:0;bottom:0;left:0;z-index:90;pointer-events:none}.drawer-root.is-open{pointer-events:auto}.drawer-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0f172a80;opacity:0;transition:opacity .25s}.is-open .drawer-overlay{opacity:1}.drawer{position:absolute;top:0;right:0;bottom:0;width:min(92vw,400px);background:var(--bg);color:var(--ink);overflow-y:auto;overscroll-behavior:contain;transform:translate(100%);transition:transform .28s cubic-bezier(.2,.8,.2,1);box-shadow:-12px 0 40px #0f172a33;outline:none;padding-bottom:24px}.is-open .drawer{transform:none}.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 16px 18px 22px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:1}.drawer-close{border:0;background:transparent;color:var(--ink-2);width:44px;height:44px;display:grid;place-items:center;border-radius:10px;cursor:pointer}.drawer-close:hover{background:var(--bg-soft)}.dr-block{padding:6px 0;border-bottom:1px solid var(--line)}.dr-row{display:flex;align-items:center;gap:16px;width:100%;min-height:56px;padding:0 22px;border:0;background:transparent;font:600 1.05rem var(--font);color:var(--ink);text-align:left;text-decoration:none!important;cursor:pointer}.dr-row:hover{background:var(--bg-soft)}.dr-row>span:not(.dr-switch){flex:1;min-width:0}.dr-icon svg:first-child{color:var(--ink-2);flex-shrink:0}.dr-caret{color:var(--muted);flex-shrink:0;transition:transform .2s}.dr-main,.dr-acc{min-height:62px;border-bottom:1px solid var(--line);font-size:1.08rem}.dr-main.active{color:var(--blue)}.dr-group.open .dr-caret{transform:rotate(180deg)}.dr-group.open .dr-acc{color:var(--blue);border-bottom-color:transparent}.dr-sub{display:flex;flex-direction:column;padding:2px 0 10px;border-bottom:1px solid var(--line);background:var(--bg-soft)}.dr-link{padding:.62rem 22px .62rem 34px;color:var(--ink-2);font-size:.97rem;text-decoration:none!important;border-left:3px solid transparent}.dr-link:hover,.dr-link.active{color:var(--blue);border-left-color:var(--blue);background:var(--bg-tint)}.dr-all{font-weight:600;color:var(--blue)}.dr-ellipsis{display:flex;flex-direction:column;line-height:1.2}.dr-ellipsis small{font:400 .8rem var(--font);color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dr-inline{display:inline-flex;align-items:center;gap:8px}.dr-switch{width:44px;height:26px;border-radius:99px;background:var(--line-2);position:relative;flex-shrink:0;transition:background .2s}.dr-switch i{position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #00000040;transition:transform .2s}.dr-switch.on{background:var(--blue)}.dr-switch.on i{transform:translate(18px)}.dr-note{margin:16px 22px 0;font-size:.8rem;color:var(--muted)}.theme-btn{border-color:var(--line);width:40px;height:40px}@media (prefers-reduced-motion: reduce){.drawer,.drawer-overlay{transition:none}}html[data-theme=dark]{color-scheme:dark;--navy: #e0e7ff;--indigo: #a5b4fc;--indigo-600: #818cf8;--blue: #60a5fa;--blue-50: #172554;--teal: #2dd4bf;--teal-50: #042f2e;--ink: #e5e7eb;--ink-2: #cbd5e1;--muted: #94a3b8;--line: #263043;--line-2: #334155;--bg: #0b1020;--bg-soft: #121a2e;--bg-tint: #151d36;--ok: #34d399;--ok-bg: #052e22;--bad: #f87171;--bad-bg: #3b0d0d;--warn: #fbbf24;--warn-bg: #2a1d05;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25)}html[data-theme=dark] body{background:var(--bg)}html[data-theme=dark] :is(.btn-outline,.menu-btn,.mobile-nav,.searchbox,.pill,.card,.chip,.q-preview,.filter-input,.input,.topic-row,.q-study,.q-review,.pal,.seg button.on,.table-wrap,.modal,.form-actions.sticky,.import-summary button,.sv-search-card,.subject-card.simple,select,textarea){background:#111a2e;color:var(--ink);border-color:var(--line)}html[data-theme=dark] .site-header{background:#0b1020eb}html[data-theme=dark] :is(.section.sv-section,.sv-tint){background:#0e1528!important}html[data-theme=dark] .sv-section+.sv-section{border-top-color:var(--line)}html[data-theme=dark] .sv-hero{background:linear-gradient(180deg,#111a33,#0e1528);border-bottom-color:var(--line)}html[data-theme=dark] .sv-hero h1{color:#f1f5f9}html[data-theme=dark] .searchbox input{color:var(--ink)}html[data-theme=dark] .demo-banner{color:#fde68a;border-bottom-color:#4a3608}html[data-theme=dark] .notice{border-color:#1e3a8a;color:#bfdbfe}html[data-theme=dark] .exam-tag{background:#1e1b4b;color:#c7d2fe}html[data-theme=dark] .site-footer{background:#070b16}html[data-theme=dark] .icon-tile{filter:saturate(1.1) brightness(.92)}html[data-theme=dark] .btn-primary{color:#fff}html[data-theme=dark] .drawer-overlay{background:#0009}html[data-theme=dark] .btn-primary{background:linear-gradient(135deg,#4338ca,#2563eb);color:#fff;border-color:transparent}html[data-theme=dark] .grad{background:linear-gradient(90deg,#a5b4fc,#5eead4);-webkit-background-clip:text;background-clip:text}html[data-theme=dark] :is(.admin-side,.toast,.skip-link){background:#070b16;color:#c7d2fe}html[data-theme=dark] .btn-primary:hover:not(:disabled){background:linear-gradient(135deg,#3730a3,#1d4ed8)}@media (min-width: 768px){.menu-btn{display:inline-grid!important}}@media (min-width: 768px) and (max-width: 1199px){.header-search{display:none!important}}html[data-theme=dark] .menu-btn{background:#111a2e;color:var(--ink)}.disc-wrap{margin-top:.7rem;border-top:1px solid var(--line);padding-top:.5rem}.disc-toggle{color:var(--blue);padding-left:.3rem}.disc{margin-top:.4rem}.disc-top{display:flex;align-items:flex-end;justify-content:space-between;gap:.75rem;margin-bottom:.6rem}.disc-kicker{display:block;font-size:.72rem;font-weight:700;letter-spacing:.08em;color:var(--blue)}.disc-top h3{margin:0;font-size:1.15rem}.disc-join{display:flex;gap:.8rem;align-items:flex-start;border:1px solid var(--line);border-radius:12px;padding:.9rem 1rem;background:var(--bg-soft)}.disc-join p{margin:.2rem 0 .7rem}.disc-ic{flex:none;display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--blue-50);color:var(--blue)}.disc-form{display:grid;gap:.45rem;margin-bottom:.6rem}.disc-form-row{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.disc-list{list-style:none;margin:0;padding:0}.disc-item{display:flex;gap:.7rem;padding:.75rem 0;border-top:1px solid var(--line)}.disc-av{flex:none;display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--teal),var(--blue));color:#fff;font-weight:700}.disc-body{min-width:0;flex:1}.disc-meta{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.disc-del{margin-left:auto;width:30px;height:30px}.disc-body p{margin:.15rem 0 0;white-space:pre-wrap;overflow-wrap:anywhere}html[data-theme=dark] .disc-join{background:#111a2e}html[data-theme=dark] .disc-ic{background:#1e293b;color:#93c5fd}.opt-tap{width:100%;text-align:left;font:inherit;font-size:1rem;color:var(--ink);background:#fff;cursor:pointer;min-height:52px;transition:border-color .15s,background .15s;-webkit-tap-highlight-color:transparent}.opt-tap:hover:not(:disabled){border-color:var(--blue);background:var(--blue-50)}.opt-tap:disabled{cursor:default;opacity:1}.opt-tap .opt-text{flex:1}.opt-tap.correct{border-color:var(--ok);background:var(--ok-bg)}.opt-tap.correct .opt-letter{background:var(--ok);color:#fff}.opt-tap.wrong{border-color:var(--bad);background:var(--bad-bg)}.opt-tap.wrong .opt-letter{background:var(--bad);color:#fff}.opt-mark.bad{color:var(--bad)}.pick-result{font-weight:700;margin:0 0 .4rem}.pick-result.ok{color:var(--ok)}.pick-result.bad{color:var(--bad)}html[data-theme=dark] .opt-tap{background:#111a2e;color:var(--ink)}html[data-theme=dark] .opt-tap.correct{background:#052e22}html[data-theme=dark] .opt-tap.wrong{background:#3b0d0d}.import-h3{display:flex;align-items:center;gap:.4rem;font-size:1rem;margin:1rem 0 .4rem;color:var(--navy)}.import-h3:first-of-type{margin-top:.2rem}.doc-sample{background:var(--bg-2, #f1f5f9);border:1px solid var(--line);border-radius:10px;padding:.75rem .9rem;font-size:.82rem;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere;margin:.4rem 0 .6rem}.doc-opts{margin-top:1rem;padding:.9rem;border:1px solid var(--line);border-radius:12px;background:var(--blue-50)}html[data-theme=dark] .doc-sample{background:#0b1222;color:var(--ink)}html[data-theme=dark] .doc-opts{background:#111a2e}.row-err{margin-top:.3rem;font-weight:600}.phone-input{display:flex;align-items:stretch;gap:0}.phone-input .phone-cc{display:flex;align-items:center;padding:0 12px;border:1px solid var(--line-2);border-right:0;border-radius:var(--radius-sm) 0 0 var(--radius-sm);background:var(--bg-soft);font-weight:600;color:inherit}.phone-input .input{border-radius:0 var(--radius-sm) var(--radius-sm) 0;flex:1;min-width:0}.err-text{color:var(--bad)}.students-tools{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;margin:0 0 1rem}.search-inline{position:relative;flex:1;min-width:220px;max-width:420px;display:block}.search-inline svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}.search-inline .input{padding-left:38px}.students-table td.mono{white-space:nowrap}@media (max-width: 640px){.students-table thead{display:none}.students-table,.students-table tbody,.students-table tr,.students-table td{display:block;width:100%}.students-table tr{position:relative;padding:.8rem 1rem;border-bottom:1px solid var(--line)}.students-table td{padding:.1rem 0;border:0}.students-table td.row-actions{position:absolute;top:.7rem;right:.8rem;width:auto;display:flex;gap:.4rem}.students-table td[data-label=Name]{padding-right:96px;font-size:1.02rem}.students-table td[data-label=Mobile]{font-size:1rem}.search-inline{max-width:none}}.chip.active{background:var(--indigo);border-color:var(--indigo);color:#fff}.chip.active .muted{color:#e0e7ff}.h3{font-size:1.15rem;margin:1.6rem 0 .7rem}.h4{font-size:1rem;margin:.4rem 0 .5rem}.grid-2{display:grid;gap:12px;margin-top:1rem}@media (min-width: 700px){.grid-2{grid-template-columns:1fr 1fr}}.btn-warn{background:#fff7ed;border:1px solid #f59e0b;color:#b45309}.center{text-align:center}.mock-course{margin:1.4rem 0}.mock-course-h{font-size:1.3rem;margin:0 0 .2rem}.mock-grid{display:grid;gap:12px;margin-top:.8rem}@media (min-width: 640px){.mock-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1000px){.mock-grid{grid-template-columns:repeat(3,1fr)}}.mock-card{display:flex;flex-direction:column;gap:.5rem;text-decoration:none!important;color:var(--ink);transition:border-color .15s,transform .15s}.mock-card:hover{border-color:#a5b4fc;transform:translateY(-2px)}.mock-card .badge{align-self:flex-start}.mock-title{font-size:1.05rem}.mock-facts{display:flex;flex-wrap:wrap;gap:.4rem .9rem;color:var(--ink-2)}.mock-facts span,.mock-rules li{display:inline-flex;align-items:center;gap:.35rem}.mock-detail h1{margin:.2rem 0 .5rem}.mock-rules{list-style:none;padding:0;margin:1rem 0;display:grid;gap:.45rem;color:var(--ink-2)}.login-mock{text-align:left}.stat-row:has(>.stat:nth-child(5)){grid-template-columns:repeat(2,minmax(0,1fr))}@media (min-width: 600px){.stat-row:has(>.stat:nth-child(5)){grid-template-columns:repeat(5,minmax(0,1fr))}}.exam-bar{display:flex;align-items:center;gap:12px;position:sticky;top:64px;z-index:5;padding:10px 14px;margin-bottom:10px}.exam-title{display:flex;flex-direction:column;min-width:0;flex:1}.exam-title strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.exam-timer{display:inline-flex;align-items:center;gap:.35rem;font:700 1.1rem var(--font);font-variant-numeric:tabular-nums;padding:.45rem .8rem;border-radius:10px;background:var(--bg-tint);color:var(--indigo)}.exam-timer.low{background:var(--bad-bg);color:var(--bad);animation:eg-pulse 1s infinite}@keyframes eg-pulse{50%{opacity:.6}}.exam-sections{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;margin-bottom:10px}.exam-sections .chip{white-space:nowrap;cursor:pointer}.exam-layout{display:grid;gap:14px}@media (min-width: 900px){.exam-layout{grid-template-columns:minmax(0,1fr) 290px;align-items:start}.exam-palette{position:sticky;top:140px}.palette-toggle{display:none!important}}.exam-qhead{display:flex;justify-content:space-between;gap:8px;margin-bottom:.6rem;flex-wrap:wrap}.exam-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:1rem}.exam-actions .btn-primary{margin-left:auto}.exam-save{margin:.7rem 0 0}@media (max-width: 899px){.exam-palette{display:none}.exam-palette.open{display:block}.palette-toggle{margin-top:10px;width:100%}}.palette-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:.5rem}.palette-sec{margin:.4rem 0 .3rem;font-weight:600}.pal.answered{background:var(--ok-bg);border-color:var(--ok);color:var(--ok)}.pal.skipped{background:var(--bad-bg);border-color:#fca5a5;color:var(--bad)}.pal.marked{background:#fff7ed;border-color:#f59e0b;color:#b45309}.pal.ans-marked{background:var(--ok-bg);border-color:#f59e0b;color:var(--ok);box-shadow:inset 0 0 0 2px #f59e0b}.pal.current{box-shadow:0 0 0 2px var(--indigo-600)}.palette-legend{display:flex;flex-wrap:wrap;gap:.4rem .8rem;margin-top:.5rem;color:var(--muted)}.palette-legend .pal{display:inline-block;width:14px;height:14px;min-width:14px;border-radius:4px;vertical-align:middle;margin-right:3px;cursor:default}.result-hero{text-align:center}.result-icon{color:#f59e0b}.result-hero h1{margin:.3rem 0 .6rem}.result-score{display:flex;justify-content:center;align-items:baseline;gap:.4rem;margin:.2rem 0 1rem}.result-score strong{font-size:2.6rem;color:var(--indigo);line-height:1}.result-score span{color:var(--muted)}.review-q{margin-bottom:12px}.perf-table td:last-child{white-space:nowrap}.bar{display:inline-block;width:70px;height:7px;border-radius:4px;background:var(--line);vertical-align:middle;overflow:hidden;margin-right:6px}.bar i{display:block;height:100%;background:var(--ok)}.my-tabs{margin:.2rem 0 1rem}.trend{margin:0 0 1rem}.trend svg{width:100%;height:auto}.trend .grid{stroke:var(--line)}.trend .axis{font-size:11px;fill:var(--muted)}.trend .line{fill:none;stroke:var(--indigo-600);stroke-width:3}.trend .dot{fill:#fff;stroke:var(--indigo-600);stroke-width:3}.report{max-width:900px;margin:0 auto;padding:24px 20px 40px;background:#fff;color:#0f172a;font-size:14px}.report-tools{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px;padding:12px;border:1px dashed var(--line-2);border-radius:10px}.report-head{display:flex;justify-content:space-between;align-items:flex-end;border-bottom:3px solid #312e81;padding-bottom:8px;margin-bottom:14px}.report-head>div:first-child{display:flex;flex-direction:column}.report-brand{font-size:1.6rem;color:#312e81}.report-meta{width:100%;border-collapse:collapse;margin-bottom:14px}.report-meta th,.report-meta td{border:1px solid #cbd5e1;padding:6px 8px;text-align:left}.report-meta th{background:#f1f5f9;width:16%}.report-score{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:10px 0}.report-score>div{border:1px solid #cbd5e1;border-radius:8px;padding:8px;text-align:center;display:flex;flex-direction:column}.report-score strong{font-size:1.2rem}.report h2{font-size:1.05rem;margin:18px 0 8px;color:#312e81}.report .table-wrap{border:0}.report .table{font-size:13px}.report-answers{width:100%;border-collapse:collapse;font-size:12.5px}.report-answers th,.report-answers td{border:1px solid #cbd5e1;padding:5px 6px;vertical-align:top;text-align:left}.report-answers th{background:#f1f5f9}.report-foot{margin-top:20px;border-top:1px solid #cbd5e1;padding-top:8px;color:#64748b}html[data-theme=dark] .report{background:#fff;color:#0f172a}@media print{.no-print,.site-header,.site-footer,.demo-banner{display:none!important}body{background:#fff!important}.report{padding:0;max-width:none}.report-answers tr,.report .table tr{break-inside:avoid}@page{margin:14mm}}.link-btn{background:none;border:0;padding:0;color:var(--primary, #4f46e5);font:inherit;text-decoration:underline;cursor:pointer}.logo-img{display:block;height:46px;width:auto}.logo-mark{display:inline-block;object-fit:contain}@media (max-width: 380px){.logo-img{height:38px}}.site-footer .logo,.admin-side .logo,html[data-theme=dark] .logo{background:#fff;border-radius:10px;padding:4px 8px}.visit-bars{display:flex;align-items:flex-end;gap:3px;height:140px;padding-top:8px}.visit-bar{flex:1;height:100%;display:flex;align-items:flex-end}.visit-bar span{display:block;width:100%;min-height:2px;background:linear-gradient(180deg,var(--blue, #2563eb),#1e3a8a);border-radius:3px 3px 0 0}.main-nav a{white-space:nowrap}@media (min-width: 900px) and (max-width: 1240px){.main-nav a{padding:.5rem;font-size:.9rem}.logo-img{height:40px}}