@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg:#f5f5f7;--bg-elevated:#fff;--bg-secondary:#f2f2f7;--bg-tertiary:#e5e5ea;--label-primary:#1d1d1f;--label-secondary:#6e6e73;--label-tertiary:#aeaeb2;--label-quarternary:#c7c7cc;--blue:#007aff;--green:#34c759;--red:#ff3b30;--orange:#ff9500;--gray:#8e8e93;--fill-primary:#78788033;--fill-secondary:#7878801f;--fill-tertiary:#78788014;--sep:#3c3c431f;--r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:20px;--r-2xl:28px;--r-full:9999px;--shadow-sm:0 1px 3px #00000014, 0 1px 2px #0000000a;--shadow-md:0 4px 12px #00000014, 0 2px 4px #0000000a;--shadow-lg:0 12px 32px #0000001a, 0 4px 8px #0000000d;--ease:cubic-bezier(.4, 0, .2, 1);--t:.18s}@media (prefers-color-scheme:dark){:root{--bg:#000;--bg-elevated:#1c1c1e;--bg-secondary:#2c2c2e;--bg-tertiary:#3a3a3c;--label-primary:#fff;--label-secondary:#ebebf5cc;--label-tertiary:#ebebf57a;--label-quarternary:#ebebf53d;--sep:#5454588c;--fill-primary:#7878805c;--fill-secondary:#7878803d;--fill-tertiary:#7878802e;--shadow-sm:0 1px 3px #00000059;--shadow-md:0 4px 12px #0006;--shadow-lg:0 12px 32px #00000080}}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--label-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,Inter,Helvetica Neue,Arial,sans-serif;font-size:17px;line-height:1.47059}#app{min-height:100vh}.page{max-width:720px;margin:0 auto;padding:32px 20px 80px}.page--wide{max-width:960px}.nav{z-index:100;-webkit-backdrop-filter:saturate(180%)blur(20px);border-bottom:.5px solid 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20px;font-family:inherit;font-size:15px;font-weight:500;line-height:1;text-decoration:none;display:inline-flex}.btn:active{transform:scale(.96)}.btn--primary{background:var(--blue);color:#fff}.btn--primary:hover{opacity:.88}.btn--secondary{background:var(--fill-secondary);color:var(--label-primary)}.btn--secondary:hover{background:var(--fill-primary)}.btn--ghost{color:var(--blue);background:0 0;padding:8px 12px}.btn--ghost:hover{background:var(--fill-tertiary)}.btn--danger{background:var(--fill-secondary);color:var(--red)}.btn--danger:hover{background:#ff3b301f}.btn--lg{padding:14px 28px;font-size:17px}.btn--sm{padding:7px 14px;font-size:13px}.btn--full{width:100%}.badge{border-radius:var(--r-full);letter-spacing:.01em;align-items:center;padding:3px 9px;font-size:12px;font-weight:600;display:inline-flex}.badge--blue{color:var(--blue);background:#007aff1f}.badge--green{color:var(--green);background:#34c7591f}.badge--red{color:var(--red);background:#ff3b301f}.badge--gray{background:var(--fill-secondary);color:var(--label-secondary)}.badge--orange{color:var(--orange);background:#ff95001f}.progress{background:var(--fill-secondary);border-radius:var(--r-full);height:4px;overflow:hidden}.progress__fill{background:var(--blue);border-radius:var(--r-full);height:100%;transition:width .4s var(--ease)}.input{background:var(--bg-secondary);border-radius:var(--r-md);width:100%;color:var(--label-primary);transition:border-color var(--t) var(--ease);resize:none;border:1.5px solid #0000;outline:none;padding:12px 16px;font-family:inherit;font-size:15px;line-height:1.5}.input:focus{border-color:var(--blue);background:var(--bg-elevated)}.input::placeholder{color:var(--label-tertiary)}.sep{background:var(--sep);height:.5px;margin:28px 0}.home{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:40px 20px;display:flex}.home__eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--blue);margin-bottom:16px;font-size:13px;font-weight:600}.home__title{margin-bottom:12px}.home__sub{color:var(--label-secondary);max-width:460px;margin-bottom:48px;font-size:19px;font-weight:400;line-height:1.5}.mode-grid{grid-template-columns:1fr 1fr;gap:16px;width:100%;max-width:580px;display:grid}@media (width<=520px){.mode-grid{grid-template-columns:1fr}}.mode-card{background:var(--bg-elevated);border:.5px solid var(--sep);border-radius:var(--r-2xl);cursor:pointer;text-align:left;transition:box-shadow var(--t) var(--ease), transform var(--t) var(--ease);flex-direction:column;gap:10px;padding:32px 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16px;display:flex}.cat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.cat-card:active{transform:scale(.97)}.cat-card--dim{opacity:.45;cursor:default;pointer-events:none}.cat-card__icon{font-size:28px}.cat-card__title{font-size:14px;font-weight:600}.seg{background:var(--fill-secondary);border-radius:var(--r-md);gap:0;padding:2px;display:inline-flex}.seg__btn{color:var(--label-secondary);cursor:pointer;transition:background var(--t) var(--ease), color var(--t) var(--ease), box-shadow var(--t) var(--ease);background:0 0;border:none;border-radius:10px;padding:6px 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18px;font-size:15px;line-height:1.6}.expl--ok{border-left:3px solid var(--green);background:#34c75914}.expl--err{border-left:3px solid var(--red);background:#ff3b3012}.tile-bank{background:var(--bg-secondary);border-radius:var(--r-lg);flex-wrap:wrap;gap:8px;min-height:64px;padding:16px;display:flex}.tile-answer{background:var(--bg-elevated);border:1.5px dashed var(--sep);border-radius:var(--r-lg);min-height:56px;transition:border-color var(--t) var(--ease);flex-wrap:wrap;align-items:center;gap:8px;padding:14px;display:flex}.tile-answer.has-tiles{border-color:var(--blue)}.tile-answer.correct{border-color:var(--green);background:#34c7590a;border-style:solid}.tile-answer.wrong{border-color:var(--red);background:#ff3b300a;border-style:solid}.tile{background:var(--bg-elevated);border:1px solid var(--sep);border-radius:var(--r-sm);color:var(--label-primary);cursor:pointer;transition:border-color var(--t) var(--ease), background var(--t) var(--ease), transform var(--t) var(--ease), opacity var(--t) var(--ease);-webkit-user-select:none;user-select:none;box-shadow:var(--shadow-sm);align-items:center;padding:6px 12px;font-size:14px;font-weight:500;display:inline-flex}.tile:hover:not(.tile--used){border-color:var(--blue);box-shadow:var(--shadow-md);transform:translateY(-1px)}.tile:active:not(.tile--used){transform:scale(.95)}.tile--used{opacity:.3;cursor:default;box-shadow:none;transform:none!important}.tile--placed{border-color:var(--blue);background:#007aff14}.tile--placed:hover{border-color:var(--red);background:#ff3b300f}.tile--correct{border-color:var(--green);color:var(--green);background:#34c75914}.tile--wrong{border-color:var(--red);color:var(--red);background:#ff3b3012}.tile-placeholder{color:var(--label-tertiary);font-size:14px;font-style:italic}.spk-grid{grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:28px;display:grid}.spk-mini{background:var(--bg-elevated);border:1px solid var(--sep);border-radius:var(--r-lg);aspect-ratio:2/3;cursor:pointer;transition:border-color var(--t) var(--ease), box-shadow var(--t) var(--ease), transform var(--t) var(--ease);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:4px;padding:8px;display:flex}.spk-mini:hover{border-color:var(--blue);box-shadow:var(--shadow-md);transform:translateY(-2px)}.spk-mini.active{border-color:var(--blue);background:#007aff0a;border-width:2px}.spk-mini.done{border-color:var(--green);background:#34c7590a}.spk-mini__num{font-size:20px;font-weight:700}.spk-mini__mark{color:var(--label-tertiary);font-size:11px;font-weight:500}.spk-mini.done .spk-mini__num{color:var(--green)}.spk-mini.active .spk-mini__num{color:var(--blue)}.section-head{border-bottom:.5px solid var(--sep);align-items:baseline;gap:12px;margin-bottom:20px;padding-bottom:14px;display:flex}.section-head h3{letter-spacing:-.015em;font-size:22px;font-weight:700}.section-head .pts{color:var(--label-secondary);font-size:13px;font-weight:500}.test-q{background:var(--bg-elevated);border:.5px solid var(--sep);border-radius:var(--r-xl);transition:border-color var(--t) var(--ease);margin-bottom:12px;padding:22px}.test-q.filled{border-color:#007aff66}.test-section{margin-bottom:52px}.score-hero{text-align:center;padding:48px 24px 36px}.score-big{letter-spacing:-.04em;color:var(--blue);font-size:80px;font-weight:700;line-height:1}.score-denom{color:var(--label-tertiary);font-size:28px;font-weight:400}.score-grade{color:var(--label-primary);margin-top:8px;font-size:22px;font-weight:600}.stat-row{grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:32px;display:grid}.stat{background:var(--bg-elevated);border:.5px solid var(--sep);border-radius:var(--r-lg);text-align:center;padding:18px 14px}.stat__label{color:var(--label-secondary);margin-bottom:4px;font-size:12px;font-weight:500}.stat__value{letter-spacing:-.02em;color:var(--label-primary);font-size:26px;font-weight:700}.review-q{background:var(--bg-elevated);border-left:3px solid var(--sep);border-radius:0 var(--r-lg) var(--r-lg) 0;animation:fade-up .2s var(--ease) both;margin-bottom:10px;padding:16px 18px}.review-q--ok{border-left-color:var(--green)}.review-q--err{border-left-color:var(--red)}.ring-wrap{width:160px;height:160px;margin:0 auto 24px;position:relative}.ring-wrap svg{transform:rotate(-90deg)}.ring-text{pointer-events:none;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}@keyframes fade-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.anim-fade{animation:fade-in .22s var(--ease) both}.anim-up{animation:fade-up .22s var(--ease) both}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.flex-wrap{flex-wrap:wrap}.gap-6{gap:6px}.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}.mb-4{margin-bottom:4px}.mb-8{margin-bottom:8px}.mb-12{margin-bottom:12px}.mb-16{margin-bottom:16px}.mb-20{margin-bottom:20px}.mb-24{margin-bottom:24px}.mb-28{margin-bottom:28px}.mb-32{margin-bottom:32px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.mt-20{margin-top:20px}.mt-24{margin-top:24px}.w-full{width:100%}.text-sm{font-size:13px}.text-sec{color:var(--label-secondary)}.text-tert{color:var(--label-tertiary)}.font-med{font-weight:500}.font-semi{font-weight:600}.font-bold{font-weight:700}.text-center{text-align:center}.modal-backdrop{-webkit-backdrop-filter:blur(6px);z-index:200;animation:backdrop-in .2s var(--ease);background:#00000073;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}@media (width>=560px){.modal-backdrop{align-items:center}}@keyframes backdrop-in{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-elevated);border-radius:var(--r-2xl) var(--r-2xl) 0 0;width:100%;max-width:560px;max-height:92vh;padding:8px 0 0;animation:.28s cubic-bezier(.32,.72,0,1) sheet-up;position:relative;overflow-y:auto}@media (width>=560px){.modal{border-radius:var(--r-2xl);animation:modal-scale .22s var(--ease)}}@keyframes sheet-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}@keyframes modal-scale{0%{opacity:0;transform:scale(.96)translateY(8px)}to{opacity:1;transform:scale(1)translateY(0)}}.modal__handle{background:var(--fill-primary);border-radius:2px;width:36px;height:4px;margin:0 auto 16px}@media (width>=560px){.modal__handle{display:none}}.modal__inner{padding:4px 24px 32px}.modal__close{background:var(--fill-secondary);cursor:pointer;width:28px;height:28px;color:var(--label-secondary);transition:background var(--t) var(--ease);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:14px;display:flex;position:absolute;top:16px;right:16px}.modal__close:hover{background:var(--fill-primary);color:var(--label-primary)}.hint-box{border-radius:var(--r-md);color:var(--label-secondary);animation:fade-up .18s var(--ease);background:#007aff0f;border:1px solid #007aff2e;padding:12px 14px;font-size:14px;line-height:1.5}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--label-quarternary);border-radius:3px}@media (width<=640px){.page{padding:24px 16px 64px}.nav{padding:0 16px}h2{font-size:24px}.stat-row{grid-template-columns:1fr 1fr 1fr}.seg__btn{padding:6px 12px}.spk-grid{gap:6px}}