:root{
  --bg:#f6f8ff;--surface:#ffffff;--surface2:#f0f4ff;--ink:#162033;--muted:#667085;--line:#dfe5f2;
  --primary:#5b67f1;--primary2:#8b5cf6;--teal:#13a89e;--green:#16a36a;--red:#e05268;--amber:#d8921a;
  --blue-soft:#eaf1ff;--mint-soft:#e7f9f3;--lilac-soft:#f0ebff;--pink-soft:#fff0f4;--peach-soft:#fff2e8;
  --shadow:0 16px 38px rgba(70,82,130,.11);--radius:24px;--radius-sm:17px;--safe-bottom:max(14px,env(safe-area-inset-bottom));
}
*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;font-size:16.5px;line-height:1.52;-webkit-font-smoothing:antialiased;overflow-x:hidden}button,input,select,textarea{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(91,103,241,.26);outline-offset:2px}.hidden{display:none!important}
.ambient{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:0}.ambient span{position:absolute;border-radius:999px;filter:blur(36px);opacity:.26}.ambient span:nth-child(1){width:220px;height:220px;background:#c9d8ff;top:-80px;right:-80px}.ambient span:nth-child(2){width:240px;height:240px;background:#d9c9ff;top:34%;left:-150px}.ambient span:nth-child(3){width:200px;height:200px;background:#c9f5e8;bottom:5%;right:-110px}.app-shell{position:relative;z-index:1;max-width:760px;margin:0 auto;min-height:100vh;padding-bottom:92px}.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:12px;padding:12px 16px;background:rgba(246,248,255,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,229,242,.8)}.topbar-copy{min-width:0;flex:1}.topbar-copy strong{display:block;font-size:18px;line-height:1.1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mini-label{display:block;font-size:12px;letter-spacing:.11em;font-weight:800;color:#7a83a0;margin-bottom:3px}.round-btn{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:14px;color:var(--ink);font-size:21px;box-shadow:0 6px 18px rgba(65,75,115,.08)}.main-content{padding:14px 14px 30px}.screen{animation:screenIn .28s ease both}.reveal{animation:riseIn .55s cubic-bezier(.2,.75,.25,1) both}.reveal:nth-of-type(2){animation-delay:.05s}.reveal:nth-of-type(3){animation-delay:.1s}.reveal:nth-of-type(4){animation-delay:.15s}@keyframes screenIn{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}@keyframes riseIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.hero-card{position:relative;overflow:hidden;border-radius:30px;padding:26px 22px;background:linear-gradient(135deg,#5064ef 0%,#795bf0 58%,#9b62dc 100%);color:white;box-shadow:0 20px 44px rgba(91,103,241,.25)}.hero-content{position:relative;z-index:2}.hero-kicker{display:inline-block;font-size:12px;letter-spacing:.09em;font-weight:850;opacity:.9;margin-bottom:10px}.hero-card h1{margin:0;font-size:clamp(29px,8vw,42px);line-height:1.05;letter-spacing:-.035em}.hero-card h1 span{color:#e8ffd3}.hero-card p{font-size:17px;line-height:1.6;margin:14px 0 20px;color:rgba(255,255,255,.9)}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.hero-orb{position:absolute;border-radius:999px;background:rgba(255,255,255,.13)}.orb-one{width:160px;height:160px;right:-55px;top:-45px}.orb-two{width:90px;height:90px;right:80px;bottom:-45px}.btn{min-height:48px;border:none;border-radius:15px;padding:12px 17px;font-weight:800;font-size:16px;display:inline-flex;align-items:center;justify-content:center;gap:7px;transition:transform .14s ease,box-shadow .14s ease,background .14s ease}.btn:active{transform:scale(.975)}.btn.primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:white;box-shadow:0 10px 24px rgba(91,103,241,.24)}.hero-card .btn.primary{background:white;color:#4d57d5;box-shadow:none}.btn.glass{background:rgba(255,255,255,.13);color:#fff;border:1px solid rgba(255,255,255,.34)}.btn.secondary{background:#fff;color:#4b5671;border:1px solid var(--line)}.btn.submit{background:#132238;color:white}.btn.full,.full{width:100%}
.exam-card,.today-card,.content-section{margin-top:14px;background:rgba(255,255,255,.94);border:1px solid rgba(223,229,242,.9);border-radius:var(--radius);padding:19px;box-shadow:var(--shadow)}.section-topline,.section-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.section-topline h2,.section-heading h2{margin:0;font-size:21px;letter-spacing:-.025em}.countdown-chip,.soft-chip,.mode-badge,.streak-badge{border-radius:999px;padding:8px 11px;font-size:13px;font-weight:850;white-space:nowrap}.countdown-chip{background:linear-gradient(135deg,#f1edff,#e9efff);color:#6354ca}.soft-chip{background:#f1f4fa;color:#68738e}.exam-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0}.exam-stat{display:flex;align-items:center;gap:10px;background:#f8faff;border:1px solid #e8ecf5;border-radius:16px;padding:12px;min-width:0}.exam-stat.wide{grid-column:1/-1}.exam-stat strong{display:block;font-size:16px}.exam-stat small{display:block;color:var(--muted);font-size:14px;line-height:1.35}.stat-icon{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;flex:0 0 auto}.stat-icon.blue{background:var(--blue-soft)}.stat-icon.mint{background:var(--mint-soft)}.stat-icon.lilac{background:var(--lilac-soft)}.exam-rule-row{display:flex;gap:7px;flex-wrap:wrap}.exam-rule-row span{background:#f5f6fb;color:#515c77;border-radius:10px;padding:7px 9px;font-size:13px;font-weight:750}
.today-progress-row{display:flex;align-items:center;gap:14px;margin:16px 0}.ring{width:88px;height:88px;border-radius:50%;background:conic-gradient(var(--primary) var(--ring,0%),#e9edf7 0);display:grid;place-content:center;text-align:center;position:relative;flex:0 0 auto}.ring:before{content:"";position:absolute;inset:8px;background:#fff;border-radius:50%}.ring strong,.ring span{position:relative;z-index:1}.ring strong{font-size:25px;line-height:1}.ring span{font-size:13px;color:var(--muted)}.today-copy{min-width:0}.today-copy strong{display:block;font-size:17px}.today-copy p{margin:5px 0 0;color:var(--muted);font-size:15px}.progress-track{height:9px;background:#e9edf7;border-radius:999px;overflow:hidden}.progress-track.large{height:11px}.progress-track>span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--primary2),#68b9ff);border-radius:inherit;transition:width .5s cubic-bezier(.2,.8,.2,1);position:relative}.progress-track>span:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.48),transparent);transform:translateX(-100%);animation:shimmer 2.3s infinite}@keyframes shimmer{to{transform:translateX(100%)}}.target-row{display:flex;justify-content:space-between;align-items:center;margin-top:13px;color:var(--muted);font-size:15px}.target-row select{border:1px solid var(--line);background:#fff;border-radius:12px;padding:8px 30px 8px 11px;color:var(--ink);font-weight:750}
.metrics-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.metric{display:flex;align-items:center;gap:11px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:0 9px 24px rgba(71,83,127,.07)}.metric-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-weight:900}.metric-icon.violet{background:var(--lilac-soft);color:#6d5ad5}.metric-icon.green{background:var(--mint-soft)}.metric-icon.amber{background:#fff3dc}.metric-icon.pink{background:var(--pink-soft)}.metric strong{display:block;font-size:22px;line-height:1.1}.metric small{color:var(--muted);font-size:13.5px}.content-section{padding:18px}.section-heading{margin-bottom:14px}.section-heading .link-btn{align-self:center}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.feature-card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:14px;text-align:left;display:flex;flex-direction:column;gap:8px;min-width:0;min-height:132px;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.feature-card:active,.mode-card:active,.section-card:active,.tool-card:active{transform:scale(.982)}.feature-card.featured{grid-column:1/-1;min-height:auto;flex-direction:row;align-items:center;background:linear-gradient(135deg,#f2efff,#eef4ff);border-color:#dcd7ff}.feature-card>span:last-child{margin-left:auto;font-size:28px;color:#8a90a5}.feature-icon{width:43px;height:43px;border-radius:13px;background:#f2efff;display:grid;place-items:center;font-size:22px;flex:0 0 auto}.feature-card strong{display:block;font-size:16.5px;line-height:1.25}.feature-card small{display:block;color:var(--muted);font-size:14px;line-height:1.4;margin-top:3px}.blue-bg{background:var(--blue-soft)}.orange-bg{background:#fff1de}.red-bg{background:#ffe9ec}.lilac-bg{background:var(--lilac-soft)}.mint-bg{background:var(--mint-soft)}.mode-scroll{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(165px,45%);gap:10px;overflow-x:auto;padding:2px 1px 8px;scroll-snap-type:x mandatory;scrollbar-width:none}.mode-scroll::-webkit-scrollbar{display:none}.mode-card{scroll-snap-align:start;border:none;border-radius:19px;padding:16px;text-align:left;min-height:150px;display:flex;flex-direction:column;justify-content:flex-end;box-shadow:0 10px 25px rgba(76,88,129,.08);transition:transform .16s ease}.mode-card>span{font-size:29px;margin-bottom:auto}.mode-card strong{font-size:16px}.mode-card small{font-size:13.5px;line-height:1.35;color:#566078;margin-top:4px}.mode-card.calc{background:linear-gradient(145deg,#eef4ff,#e8f7ff)}.mode-card.drug{background:linear-gradient(145deg,#edfaff,#e9f9f2)}.mode-card.law{background:linear-gradient(145deg,#fff4e8,#fff0f2)}.mode-card.rapid{background:linear-gradient(145deg,#fff6d9,#fff1df)}.mode-card.night{background:linear-gradient(145deg,#eef0ff,#eee7ff)}.mode-card.mock{background:linear-gradient(145deg,#e9f5ff,#f0efff)}
.topic-heatmap{display:flex;gap:8px;flex-wrap:wrap}.topic-pill{padding:9px 11px;border-radius:13px;border:1px solid var(--line);font-size:13.5px;font-weight:750}.topic-pill strong{margin-left:5px}.topic-pill.strong{background:#e8f8ef;border-color:#cdebd9;color:#257653}.topic-pill.improving{background:#fff7e3;border-color:#f0dfb4;color:#946b12}.topic-pill.weak{background:#fff0f2;border-color:#f2d2d7;color:#a54456}.empty-state{color:var(--muted);font-size:15px;padding:8px 0}.section-list{display:grid;gap:10px}.section-card{border:1px solid var(--line);background:#fff;border-radius:19px;padding:15px;display:flex;align-items:center;gap:12px;text-align:left;min-width:0;box-shadow:0 8px 22px rgba(73,84,124,.05)}.section-index{width:43px;height:43px;border-radius:14px;background:var(--section-soft,#edf2ff);color:var(--section,#5b67f1);display:grid;place-items:center;font-weight:900;flex:0 0 auto}.section-info{min-width:0;flex:1}.section-info strong{display:block;font-size:16.5px}.section-info small{display:block;color:var(--muted);font-size:13.5px;margin:2px 0 8px}.mini-progress{height:5px;background:#eef1f6;border-radius:99px;overflow:hidden}.mini-progress span{display:block;height:100%;background:var(--section,#5b67f1);width:0}.section-percent{font-size:14px;font-weight:850;color:#5d6680}.tools-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.tool-card{position:relative;border:1px solid var(--line);background:#fff;border-radius:17px;padding:14px;text-align:left;display:flex;gap:10px;align-items:flex-start;min-height:92px}.tool-card>span{font-size:21px}.tool-card strong{display:block;font-size:15.5px}.tool-card small{display:block;color:var(--muted);font-size:13px;line-height:1.35;margin-top:3px}.file-card input{position:absolute;opacity:0;width:1px;height:1px}.footer-note{display:flex;gap:10px;margin:16px 3px 4px;padding:15px 16px;border-radius:18px;background:linear-gradient(135deg,#fff0f5,#f6f0ff);border:1px solid #f1dce9}.footer-note p{margin:0;font-size:14.5px;color:#5d6075}.footer-note span{font-size:22px}.link-btn{border:0;background:transparent;color:#5363d9;font-weight:800;padding:7px 3px}.link-btn.danger{color:#c05264}
.quiz-head,.mock-head{background:#fff;border:1px solid var(--line);border-radius:22px;padding:17px;margin-bottom:12px;box-shadow:var(--shadow)}.quiz-head-row,.mock-head-row{display:flex;align-items:center;justify-content:space-between;gap:10px}.quiz-head h2,.mock-head h2{margin:9px 0 1px;font-size:23px;letter-spacing:-.02em}.quiz-head p,.mock-head p{margin:0;color:var(--muted);font-size:14.5px}.mode-badge{background:#eef0ff;color:#5d5bd8}.streak-badge{background:#fff2dc;color:#986515}.quiz-stats{display:flex;justify-content:space-between;gap:7px;margin:14px 0 10px}.quiz-stats span{font-size:12.5px;color:var(--muted);text-align:center}.quiz-stats b{display:block;color:var(--ink);font-size:15px}.motivation-card{display:flex;align-items:center;gap:10px;padding:13px 15px;border-radius:18px;background:linear-gradient(135deg,#f2f6ff,#f9f4ff);border:1px solid #e0e6fa;margin-bottom:12px;animation:softFloat 3s ease-in-out infinite}.motivation-card span{font-size:21px}.motivation-card p{margin:0;font-size:15px;font-weight:700;color:#56607a}@keyframes softFloat{50%{transform:translateY(-2px)}}
.question-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:26px;padding:19px 17px;box-shadow:var(--shadow);overflow:hidden}.question-card.correct-pulse{animation:correctPulse .52s ease}.question-card.wrong-shake{animation:wrongShake .42s ease}@keyframes correctPulse{35%{box-shadow:0 0 0 7px rgba(22,163,106,.10),var(--shadow);transform:scale(1.006)}}@keyframes wrongShake{20%,60%{transform:translateX(-5px)}40%,80%{transform:translateX(5px)}}.question-meta{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:15px}.question-meta>div{display:flex;gap:6px;flex-wrap:wrap;min-width:0}.question-number,.quality-chip{display:inline-flex;align-items:center;min-height:30px;padding:6px 9px;border-radius:9px;font-size:11.5px;font-weight:850;letter-spacing:.04em}.question-number{background:#162033;color:white}.quality-chip{background:#eef2ff;color:#5964c5}.quality-chip.muted{background:#f2f4f8;color:#68738d}.quality-chip.mastered{background:#e6f8ee;color:#257b56}.bookmark-question{width:44px;height:44px;border:1px solid #e3e7f0;border-radius:14px;background:#fff;font-size:25px;color:#8d6a16;flex:0 0 auto}.bookmark-question.active{background:#fff5cf;border-color:#eedb8d;color:#b57900}.question-text{font-size:clamp(21px,6vw,27px);line-height:1.34;letter-spacing:-.018em;margin:0 0 18px;color:#182137}.options{display:grid;gap:10px}.option-btn{width:100%;min-height:58px;border:1.5px solid #dfe4ef;border-radius:17px;background:#fbfcff;color:#202941;padding:12px 13px;display:flex;align-items:flex-start;gap:11px;text-align:left;font-size:17px;line-height:1.45;transition:border-color .15s ease,background .15s ease,transform .12s ease,box-shadow .15s ease}.option-btn:active{transform:scale(.988)}.option-letter{width:34px;height:34px;border-radius:11px;background:#eef2f9;display:grid;place-items:center;font-weight:900;flex:0 0 auto}.option-text{padding-top:4px;min-width:0}.option-btn.correct-choice{background:#e9f9f0;border-color:#8ed7b1;color:#155f43;box-shadow:0 7px 18px rgba(22,163,106,.09)}.option-btn.correct-choice .option-letter{background:#1aa56d;color:white}.option-btn.wrong-choice{background:#fff0f2;border-color:#ecaab4;color:#9b3345;animation:optionShake .34s ease}.option-btn.wrong-choice .option-letter{background:#df5a6d;color:#fff}.option-btn.disabled{pointer-events:none}.option-btn.mock-selected{background:#eef1ff;border-color:#8e98ee}.answer-feedback{margin-top:14px;padding:13px 14px;border-radius:15px;font-size:16px;font-weight:800;animation:feedbackIn .28s ease}.answer-feedback.correct{background:#e8f8ef;color:#196a49}.answer-feedback.wrong{background:#fff0f2;color:#a13b4d}@keyframes feedbackIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes optionShake{25%{transform:translateX(-4px)}50%{transform:translateX(4px)}75%{transform:translateX(-2px)}}
.explanation-panel{margin-top:16px;border-radius:20px;background:linear-gradient(145deg,#f6f9ff,#f8f5ff);border:1px solid #dfe6f6;padding:17px;animation:explainIn .38s cubic-bezier(.2,.75,.25,1)}@keyframes explainIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.explanation-title{display:flex;gap:10px;align-items:center}.explanation-title>span{width:42px;height:42px;border-radius:13px;background:#fff0bd;display:grid;place-items:center;font-size:22px}.explanation-title small{font-size:11.5px;letter-spacing:.1em;font-weight:900;color:#7b7399}.explanation-title h3{margin:2px 0 0;font-size:17px}.explanation-text{margin:14px 0 0;font-size:18px;line-height:1.72;color:#303a52}.exam-tip{margin-top:13px;padding:13px 14px;border-radius:15px;background:#fff;border:1px solid #e4e7f0;font-size:16px;line-height:1.55;font-weight:750;color:#3d4862}.calculation-steps{margin-top:12px;padding:13px 14px;border-radius:15px;background:#eaf6ff;color:#33435a;font-size:16px;line-height:1.6}.why-btn{margin-top:13px;width:100%;min-height:46px;border:1px solid #dce2ef;border-radius:13px;background:#fff;color:#536079;font-weight:800;text-align:left;padding:11px 13px}.why-btn span{float:right}.why-panel{margin-top:8px;display:grid;gap:8px}.why-item{background:#fff;border:1px solid #e4e8f1;border-radius:13px;padding:11px 12px;font-size:15.5px;line-height:1.55;color:#4f5a71}.answer-tools{margin-top:15px;display:grid;gap:12px}.confidence-wrap{padding:13px;border-radius:16px;background:#fafbfe;border:1px solid #e5e8f0}.confidence-wrap>span{display:block;font-size:15px;font-weight:750;margin-bottom:9px}.confidence-wrap>div{display:flex;gap:8px}.confidence-btn{min-height:43px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:9px 13px;font-weight:800;color:#57617b}.confidence-btn.active{background:#eef0ff;color:#565bcc;border-color:#b9c0f5}.question-tools{display:flex;gap:7px;flex-wrap:wrap}.mini-btn{min-height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:9px 12px;font-weight:750;color:#59647b}.mini-btn.danger{color:#b04e61}.quiz-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}.quiz-subactions{display:flex;justify-content:space-between;gap:10px;padding:8px 3px 0}.timer{font-size:24px;color:#4e5ee2}.mock-head-row{margin-top:7px}.mock-question-card{margin-top:12px}
.bottom-nav{position:fixed;z-index:40;left:50%;bottom:0;transform:translateX(-50%);width:min(760px,100%);padding:8px 12px var(--safe-bottom);display:grid;grid-template-columns:repeat(4,1fr);gap:5px;background:rgba(255,255,255,.93);backdrop-filter:blur(18px);border-top:1px solid rgba(217,223,235,.9)}.bottom-nav button{border:0;background:transparent;min-height:54px;border-radius:14px;color:#7b849b;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-weight:750}.bottom-nav button span{font-size:20px;line-height:1}.bottom-nav button small{font-size:12px}.bottom-nav button.active{background:#eef0ff;color:#5662d5}
.dialog{border:0;padding:0;background:#fff;color:var(--ink);box-shadow:0 25px 80px rgba(23,31,58,.28)}.dialog::backdrop{background:rgba(28,34,54,.45);backdrop-filter:blur(4px)}.dialog.sheet{width:min(720px,calc(100% - 16px));max-height:86vh;border-radius:26px 26px 18px 18px}.dialog.compact{width:min(520px,calc(100% - 22px));border-radius:24px}.dialog-head{position:sticky;top:0;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:17px 18px 14px;background:rgba(255,255,255,.96);border-bottom:1px solid #eef0f5}.dialog-head h2{margin:0;font-size:21px}.close-dialog{width:42px;height:42px;border:1px solid var(--line);border-radius:13px;background:#fff;font-size:25px;color:#596079}.dialog-content,.rapid-content,.search-results{padding:14px 17px 22px;overflow:auto}.dialog-intro{padding:0 18px;color:var(--muted);font-size:15px}.navigator-grid{padding:14px 17px 24px;display:grid;grid-template-columns:repeat(7,1fr);gap:7px;overflow:auto}.navigator-grid button{aspect-ratio:1;border:1px solid #dfe4ee;border-radius:11px;background:#fff;font-weight:800;color:#5b647b}.navigator-grid button.correct{background:#e7f8ef;color:#1f7651;border-color:#b8e2cc}.navigator-grid button.wrong{background:#fff0f2;color:#ac4052;border-color:#efc4ca}.navigator-grid button.current{box-shadow:0 0 0 3px rgba(91,103,241,.18);border-color:#7d88eb}.analytics-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:14px}.analytics-summary .a-card{background:#f6f8fc;border-radius:15px;padding:12px;text-align:center}.a-card strong{display:block;font-size:22px}.a-card span{font-size:12.5px;color:var(--muted)}.analytics-section,.mistake-item,.report-item,.search-result,.rapid-item{border:1px solid var(--line);border-radius:16px;padding:13px;margin-bottom:9px;background:#fff}.analytics-section-head{display:flex;justify-content:space-between;gap:10px}.analytics-section h3,.mistake-item h3,.rapid-item h3{margin:0;font-size:16px}.analytics-section p,.mistake-item p,.report-item p,.search-result p,.rapid-item p{margin:5px 0;color:var(--muted);font-size:14.5px;line-height:1.48}.search-form{display:flex;gap:8px;padding:14px 17px}.search-form input{min-width:0;flex:1;min-height:48px;border:1px solid var(--line);border-radius:14px;padding:10px 13px;font-size:16px}.search-result button,.mistake-item button,.report-item button{border:0;background:#eef1ff;color:#5661cd;border-radius:10px;padding:8px 10px;font-weight:800;margin-top:6px}.mock-choices{display:grid;gap:10px;padding:17px}.mock-choice{border:1px solid var(--line);background:#fff;border-radius:17px;text-align:left;padding:15px}.mock-choice strong{font-size:17px}.mock-choice small{display:block;color:var(--muted);font-size:14px;margin-top:3px}.report-preview{margin:15px 17px 8px;padding:12px;border-radius:14px;background:#f6f8fc;color:#4d5870;font-size:14px}.report-form{display:grid;gap:10px;padding:8px 17px 18px}.report-form label{display:flex;gap:8px;align-items:flex-start;background:#fafbfe;border:1px solid #e6e9f1;border-radius:13px;padding:11px;font-size:15px}.report-form textarea{min-height:88px;border:1px solid var(--line);border-radius:13px;padding:11px;font-size:16px}.toast{position:fixed;z-index:100;left:50%;bottom:90px;transform:translate(-50%,18px);opacity:0;pointer-events:none;background:#172036;color:#fff;padding:11px 15px;border-radius:13px;box-shadow:0 12px 30px rgba(20,28,49,.25);font-size:14.5px;font-weight:750;max-width:calc(100% - 30px);text-align:center;transition:.22s ease}.toast.show{opacity:1;transform:translate(-50%,0)}.confetti-layer{position:fixed;inset:0;pointer-events:none;z-index:90;overflow:hidden}.confetti{position:absolute;width:9px;height:15px;border-radius:3px;animation:confettiFall 850ms cubic-bezier(.15,.75,.3,1) forwards}@keyframes confettiFall{0%{transform:translate(var(--x),var(--y)) rotate(0);opacity:1}100%{transform:translate(calc(var(--x) + var(--dx)),calc(var(--y) + 180px)) rotate(var(--rot));opacity:0}}
@media (min-width:640px){.main-content{padding:18px 20px 40px}.hero-card{padding:34px}.feature-grid{grid-template-columns:repeat(3,1fr)}.feature-card.featured{grid-column:span 3}.metrics-grid{grid-template-columns:repeat(4,1fr)}.tools-grid{grid-template-columns:repeat(3,1fr)}.mode-scroll{grid-auto-columns:180px}.navigator-grid{grid-template-columns:repeat(10,1fr)}}
@media (max-width:360px){body{font-size:16px}.main-content{padding-left:10px;padding-right:10px}.hero-card{padding:22px 17px}.hero-card h1{font-size:28px}.exam-card,.today-card,.content-section{padding:16px}.feature-grid{gap:8px}.feature-card{padding:12px;min-height:128px}.question-card{padding:16px 13px}.question-text{font-size:21px}.option-btn{font-size:16.5px;padding:11px}.explanation-text{font-size:17.5px}.navigator-grid{grid-template-columns:repeat(6,1fr)}.quiz-stats{gap:3px}}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}.ambient{display:none}}
.option-btn.mock-selected{background:#eef1ff;border-color:#8995ed;box-shadow:0 0 0 3px rgba(91,103,241,.08)}
@media (max-width:640px){.dialog.sheet{margin:auto 8px 8px;width:calc(100% - 16px);max-height:88vh;border-radius:24px 24px 16px 16px}.dialog.compact{margin:auto 10px 14px;width:calc(100% - 20px)}.bottom-nav{padding-left:8px;padding-right:8px}.bottom-nav button{min-width:0}.bottom-nav button small{white-space:nowrap}}