:root{
  --navy:#0b1736;--navy-2:#122653;--ink:#17223b;--muted:#67728a;--bg:#f2f5fb;--card:#fff;
  --line:#dfe5f0;--blue:#2e65f3;--blue-soft:#eaf0ff;--cyan:#12a9c7;--green:#1ca76b;
  --green-soft:#e7f8f0;--amber:#f4a62a;--amber-soft:#fff4dc;--red:#df4c5b;--red-soft:#ffebee;
  --shadow:0 12px 35px rgba(15,31,67,.08);--radius:20px;--sidebar:264px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}button,input,select{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}.app-shell{min-height:100vh;display:flex}.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:linear-gradient(180deg,var(--navy),#081127);color:#fff;padding:24px 18px;display:flex;flex-direction:column;z-index:30;overflow-y:auto}.brand{display:flex;align-items:center;gap:12px;padding:2px 8px 24px}.brand-mark{width:46px;height:46px;border-radius:15px;background:linear-gradient(135deg,#3e79ff,#16bdd2);display:grid;place-items:center;font-weight:900;box-shadow:0 8px 22px rgba(46,101,243,.35)}.brand strong,.brand span{display:block}.brand strong{font-size:14px}.brand span{font-size:12px;color:#9fb0d6}.nav-list{display:grid;gap:6px}.nav-item{border:0;background:transparent;color:#b8c4df;padding:11px 12px;border-radius:12px;text-align:left;display:flex;gap:11px;align-items:center;font-size:14px;font-weight:650}.nav-item span{width:25px;height:25px;display:grid;place-items:center;border-radius:8px;background:rgba(255,255,255,.06);font-size:13px}.nav-item:hover,.nav-item.active{color:#fff;background:rgba(255,255,255,.1)}.nav-item.active span{background:#2e65f3}.sidebar-goal{margin-top:auto;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.08);padding:15px;border-radius:16px}.goal-row{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:#afbddb;margin-bottom:7px}.goal-row strong{color:#fff}.mini-progress{height:7px;background:rgba(255,255,255,.12);border-radius:999px;overflow:hidden;margin:11px 0 7px}.mini-progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,#2e65f3,#18c4a2);border-radius:inherit;transition:.35s}.sidebar-goal small{color:#8fa0c6}.sidebar-note{font-size:10px;color:#7182a7;padding:0 5px;margin:12px 0 0}.content-shell{width:calc(100% - var(--sidebar));margin-left:var(--sidebar);min-height:100vh}.topbar{height:82px;position:sticky;top:0;z-index:20;background:rgba(242,245,251,.88);backdrop-filter:blur(16px);display:flex;align-items:center;padding:0 34px;border-bottom:1px solid rgba(223,229,240,.8)}.menu-toggle{display:none;border:0;background:#fff;border-radius:11px;width:42px;height:42px;margin-right:12px;box-shadow:var(--shadow)}.topbar-copy{display:flex;flex-direction:column}.topbar-copy span{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--blue);font-weight:800}.topbar-copy strong{font-size:20px}.top-actions{margin-left:auto;display:flex;align-items:center;gap:10px}.ghost-btn{border:1px solid var(--line);background:#fff;color:var(--muted);padding:9px 13px;border-radius:11px;font-size:12px;font-weight:700}.target-pill{border:0;background:var(--navy);color:#fff;border-radius:13px;padding:8px 13px;text-align:left}.target-pill span,.target-pill strong{display:block}.target-pill span{font-size:9px;text-transform:uppercase;letter-spacing:.08em;color:#9db0dc}.target-pill strong{font-size:15px}main{max-width:1440px;margin:0 auto;padding:30px 34px 70px}.hero{border-radius:26px;background:linear-gradient(115deg,#0b1736 0%,#173672 58%,#1b6ba3 100%);color:#fff;padding:30px;display:grid;grid-template-columns:1.5fr .85fr;gap:28px;overflow:hidden;position:relative;box-shadow:0 18px 50px rgba(15,31,67,.17)}.hero:after{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(255,255,255,.09);border-radius:50%;right:-130px;top:-180px;box-shadow:0 0 0 65px rgba(255,255,255,.035),0 0 0 130px rgba(255,255,255,.025)}.hero-copy,.hero-stats{position:relative;z-index:1}.kicker{display:inline-flex;align-items:center;gap:7px;font-size:11px;font-weight:850;text-transform:uppercase;letter-spacing:.1em;color:#77dbea}.hero h1{font-size:clamp(28px,4vw,48px);line-height:1.05;margin:9px 0 13px;letter-spacing:-.035em}.hero p{max-width:680px;color:#c8d6f1;margin:0 0 22px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.primary-btn,.secondary-btn,.danger-btn{border:0;border-radius:12px;padding:11px 16px;font-weight:800;font-size:13px}.primary-btn{background:var(--blue);color:#fff;box-shadow:0 8px 22px rgba(46,101,243,.27)}.secondary-btn{background:#eef3ff;color:var(--navy)}.hero .secondary-btn{background:rgba(255,255,255,.11);color:#fff;border:1px solid rgba(255,255,255,.15)}.danger-btn{background:var(--red-soft);color:var(--red)}.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;align-content:center}.hero-stat{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:15px}.hero-stat span{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#aebfdf}.hero-stat strong{display:block;font-size:27px;margin-top:2px}.section{margin-top:28px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:14px}.section-head h2{font-size:21px;margin:0;letter-spacing:-.02em}.section-head p{margin:3px 0 0;color:var(--muted);font-size:13px}.section-link{border:0;background:transparent;color:var(--blue);font-weight:800;font-size:12px}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.stat-card{padding:18px}.stat-card .label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:800}.stat-card strong{display:block;font-size:29px;margin:5px 0 2px}.stat-card small{color:var(--muted)}.plan-card{padding:19px;position:relative;overflow:hidden}.plan-card.current{border-color:#9bb5ff;box-shadow:0 12px 35px rgba(46,101,243,.12)}.day-chip{display:inline-flex;background:var(--blue-soft);color:var(--blue);font-size:10px;text-transform:uppercase;letter-spacing:.08em;font-weight:900;padding:5px 8px;border-radius:999px}.plan-card h3{font-size:16px;margin:10px 0 8px}.plan-card ul{margin:0 0 13px;padding-left:18px;color:var(--muted);font-size:12px}.plan-card li{margin:4px 0}.plan-footer{display:flex;align-items:center;justify-content:space-between}.plan-footer small{color:var(--muted)}.module-card{padding:20px;display:flex;flex-direction:column;min-height:220px;transition:.2s}.module-card:hover{transform:translateY(-3px);border-color:#b9c8ec}.module-top{display:flex;justify-content:space-between}.module-icon{width:48px;height:48px;border-radius:15px;background:var(--blue-soft);display:grid;place-items:center;font-size:24px}.priority{font-size:10px;font-weight:900;letter-spacing:.08em;border-radius:999px;padding:5px 8px;height:max-content}.priority-a{background:var(--green-soft);color:var(--green)}.priority-b{background:var(--amber-soft);color:#b06b00}.module-card h3{font-size:17px;margin:13px 0 6px}.module-card p{font-size:12px;color:var(--muted);margin:0 0 15px}.module-meta{display:flex;gap:12px;margin-top:auto;font-size:11px;color:var(--muted)}.module-progress{height:6px;background:#edf0f6;border-radius:999px;overflow:hidden;margin:12px 0}.module-progress i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan));width:0}.timer-card{padding:23px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:20px}.timer-card h3{margin:0 0 5px}.timer-card p{margin:0;color:var(--muted);font-size:12px}.timer-display{font-variant-numeric:tabular-nums;font-size:42px;font-weight:900;letter-spacing:-.04em}.timer-actions{display:flex;gap:8px;margin-top:13px}.timer-actions button{padding:8px 12px}.alert{border-radius:15px;padding:14px 16px;font-size:12px}.alert-info{background:var(--blue-soft);color:#244fb7}.alert-warn{background:var(--amber-soft);color:#8b5900}.alert-success{background:var(--green-soft);color:#10764b}.alert-danger{background:var(--red-soft);color:#a82f3c}.module-hero{background:#fff;border:1px solid var(--line);border-radius:25px;padding:28px;display:grid;grid-template-columns:1fr auto;gap:22px}.module-title-row{display:flex;gap:16px;align-items:center}.module-title-row .module-icon{width:62px;height:62px;font-size:31px}.module-hero h1{margin:0 0 6px;font-size:31px}.module-hero p{margin:0;color:var(--muted);max-width:820px}.module-hero-actions{display:flex;gap:8px;align-items:flex-start;flex-wrap:wrap;justify-content:flex-end}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:20px;margin-top:20px;align-items:start}.lesson-card{padding:24px;margin-bottom:16px}.lesson-card h2{font-size:19px;margin:0 0 9px}.lesson-card p{color:#3c4862}.lesson-card ul{padding-left:20px;margin:10px 0}.lesson-card li{margin:7px 0}.must-know{padding:22px;background:linear-gradient(180deg,#f5f8ff,#fff);border:1px solid #d8e1fa;border-radius:20px}.must-know h3{margin:0 0 12px}.check-list{list-style:none;padding:0;margin:0}.check-list li{position:relative;padding:8px 0 8px 28px;border-bottom:1px solid #edf0f6;font-size:13px}.check-list li:last-child{border:0}.check-list li:before{content:'✓';position:absolute;left:0;top:8px;width:19px;height:19px;border-radius:50%;display:grid;place-items:center;background:var(--green-soft);color:var(--green);font-size:11px;font-weight:900}.memory-hook{margin-top:15px;background:var(--amber-soft);color:#75500b;padding:13px;border-radius:13px;font-size:12px;font-weight:700}.sticky-side{position:sticky;top:102px;display:grid;gap:16px}.tip-card{padding:20px}.tip-card h3{margin:0 0 10px;font-size:16px}.tip-card ul{padding-left:18px;margin:0;color:var(--muted);font-size:12px}.tip-card li{margin:7px 0}.image-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.image-card{overflow:hidden;border:1px solid var(--line);border-radius:16px;background:#fff}.image-card button{display:block;width:100%;border:0;background:#f8f9fc;padding:0}.image-card img{width:100%;aspect-ratio:16/10;object-fit:contain;background:#fff}.image-card figcaption{padding:11px 13px;font-size:11px;color:var(--muted)}.filter-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:16px}.select{border:1px solid var(--line);background:#fff;border-radius:11px;padding:10px 35px 10px 12px;color:var(--ink)}.flash-layout{display:grid;grid-template-columns:minmax(0,760px) 280px;gap:20px;align-items:start}.flash-card-wrap{perspective:1200px;min-height:390px}.flash-card{position:relative;min-height:390px;transform-style:preserve-3d;transition:transform .5s}.flash-card.flipped{transform:rotateY(180deg)}.flash-face{position:absolute;inset:0;backface-visibility:hidden;background:#fff;border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow);padding:34px;display:flex;flex-direction:column}.flash-back{transform:rotateY(180deg);background:linear-gradient(145deg,#0d1b3d,#173b76);color:#fff}.flash-label{font-size:10px;text-transform:uppercase;letter-spacing:.12em;font-weight:900;color:var(--blue)}.flash-back .flash-label{color:#7de2e7}.flash-question,.flash-answer{font-size:clamp(24px,4vw,37px);line-height:1.25;font-weight:850;letter-spacing:-.025em;margin:auto 0}.flash-hint{margin-top:auto;color:var(--muted);font-size:12px}.flash-back .flash-hint{color:#aec0e3}.flash-controls{display:flex;justify-content:center;gap:9px;margin-top:14px;flex-wrap:wrap}.rate-btn{border:0;padding:10px 14px;border-radius:12px;font-weight:800;font-size:12px}.rate-again{background:var(--red-soft);color:var(--red)}.rate-doubt{background:var(--amber-soft);color:#9a6500}.rate-know{background:var(--green-soft);color:var(--green)}.side-stats{padding:20px}.side-stats h3{margin:0 0 12px}.metric-row{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:9px 0;font-size:12px}.metric-row:last-child{border:0}.metric-row span{color:var(--muted)}.question-shell{max-width:900px;margin:0 auto}.question-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.question-counter{font-size:12px;font-weight:800;color:var(--muted)}.question-progress{height:7px;background:#e5eaf3;border-radius:999px;overflow:hidden;margin-bottom:18px}.question-progress i{height:100%;display:block;background:linear-gradient(90deg,var(--blue),var(--cyan));transition:.25s}.question-card{padding:26px}.question-card h2{font-size:22px;line-height:1.35;margin:5px 0 20px}.question-image{border:1px solid var(--line);border-radius:16px;background:#fff;margin:0 0 20px;overflow:hidden}.question-image img{width:100%;max-height:470px;object-fit:contain}.option-list{display:grid;gap:9px}.option{width:100%;border:1px solid var(--line);background:#fff;border-radius:13px;padding:13px 14px;text-align:left;display:flex;align-items:flex-start;gap:11px;color:var(--ink)}.option:hover{border-color:#9eb4ef;background:#fafbff}.option .letter{width:27px;height:27px;border-radius:8px;background:#eef2f8;display:grid;place-items:center;font-weight:900;flex:0 0 auto}.option.selected{border-color:var(--blue);background:var(--blue-soft)}.option.correct{border-color:var(--green);background:var(--green-soft)}.option.wrong{border-color:var(--red);background:var(--red-soft)}.feedback-box{margin-top:16px;border-radius:15px;padding:15px}.feedback-box h3{font-size:14px;margin:0 0 4px}.feedback-box p{font-size:12px;margin:4px 0}.question-actions{display:flex;justify-content:flex-end;margin-top:16px}.test-modes .card{padding:21px}.test-modes h3{margin:8px 0 5px}.test-modes p{font-size:12px;color:var(--muted);min-height:54px}.mode-icon{font-size:27px}.result-hero{text-align:center;padding:31px}.score-ring{width:140px;height:140px;border-radius:50%;margin:0 auto 18px;display:grid;place-items:center;background:conic-gradient(var(--green) var(--score),#e8edf4 0);position:relative}.score-ring:after{content:"";position:absolute;inset:12px;background:#fff;border-radius:50%}.score-ring strong{position:relative;z-index:1;font-size:30px}.breakdown{padding:20px}.bar-row{display:grid;grid-template-columns:160px 1fr 48px;gap:12px;align-items:center;margin:11px 0;font-size:12px}.bar{height:9px;background:#e9edf4;border-radius:999px;overflow:hidden}.bar i{display:block;height:100%;background:var(--blue);border-radius:inherit}.review-item{padding:18px;margin-top:12px}.review-item.good{border-left:4px solid var(--green)}.review-item.bad{border-left:4px solid var(--red)}.review-item h4{margin:0 0 8px}.review-item p{font-size:12px;margin:4px 0;color:var(--muted)}.review-item .answer-line{color:var(--ink)}.error-card{padding:18px;display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center}.error-card h3{font-size:15px;margin:0 0 4px}.error-card p{font-size:12px;color:var(--muted);margin:3px 0}.error-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:8px}.chip{display:inline-flex;padding:4px 8px;border-radius:999px;background:#eef2f8;color:var(--muted);font-size:10px;font-weight:800}.exam-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.exam-page{padding:9px;overflow:hidden}.exam-page button{border:0;background:#eef1f7;border-radius:12px;padding:0;width:100%;overflow:hidden}.exam-page img{width:100%;aspect-ratio:3/4;object-fit:cover;object-position:top}.exam-page h3{font-size:13px;margin:10px 4px 2px}.exam-page p{font-size:10px;color:var(--muted);margin:0 4px 6px}.language-table{width:100%;border-collapse:collapse}.language-table th,.language-table td{text-align:left;padding:13px;border-bottom:1px solid var(--line);vertical-align:top;font-size:12px}.language-table th{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.language-table td:first-child{font-weight:900;color:var(--blue);font-size:14px}.empty-state{text-align:center;padding:55px 20px}.empty-state .empty-icon{font-size:44px}.empty-state h2{margin:10px 0 5px}.empty-state p{color:var(--muted);max-width:520px;margin:0 auto 17px}.modal{position:fixed;inset:0;background:rgba(5,10,24,.88);z-index:100;display:none;align-items:center;justify-content:center;padding:30px}.modal.open{display:flex}.modal-body{max-width:1200px;max-height:94vh;overflow:auto;text-align:center;color:#fff}.modal-body img{max-height:84vh;margin:0 auto;border-radius:8px;background:#fff}.modal-body p{font-size:12px;color:#cbd6ec}.modal-close{position:fixed;right:22px;top:16px;border:0;background:rgba(255,255,255,.13);color:#fff;border-radius:50%;width:44px;height:44px;font-size:27px}.toast{position:fixed;right:22px;bottom:22px;background:var(--navy);color:#fff;padding:12px 16px;border-radius:12px;box-shadow:var(--shadow);font-size:12px;opacity:0;transform:translateY(10px);pointer-events:none;transition:.25s;z-index:120}.toast.show{opacity:1;transform:translateY(0)}.back-link{border:0;background:transparent;color:var(--blue);font-weight:800;padding:0;margin-bottom:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1100px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}.content-layout{grid-template-columns:1fr}.sticky-side{position:static;grid-template-columns:repeat(2,1fr)}.exam-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){:root{--sidebar:280px}.sidebar{transform:translateX(-100%);transition:.25s}.sidebar.open{transform:translateX(0);box-shadow:20px 0 60px rgba(0,0,0,.3)}.content-shell{width:100%;margin-left:0}.menu-toggle{display:block}.topbar{padding:0 18px}.top-actions .ghost-btn{display:none}main{padding:22px 18px 60px}.hero{grid-template-columns:1fr;padding:24px}.hero-stats{grid-template-columns:repeat(4,1fr)}.hero-stat{padding:11px}.hero-stat strong{font-size:21px}.module-hero{grid-template-columns:1fr}.module-hero-actions{justify-content:flex-start}.flash-layout{grid-template-columns:1fr}.side-stats{order:-1}.exam-grid{grid-template-columns:repeat(2,1fr)}.image-grid{grid-template-columns:1fr}.timer-card{grid-template-columns:1fr}.timer-display{font-size:38px}}
@media(max-width:560px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.hero-stats{grid-template-columns:repeat(2,1fr)}.topbar-copy strong{font-size:16px}.target-pill{display:none}.module-title-row{align-items:flex-start}.module-hero h1{font-size:25px}.sticky-side{grid-template-columns:1fr}.flash-face{padding:24px}.flash-card-wrap,.flash-card{min-height:350px}.flash-question,.flash-answer{font-size:27px}.question-card{padding:18px}.question-card h2{font-size:19px}.exam-grid{grid-template-columns:1fr 1fr}.bar-row{grid-template-columns:105px 1fr 40px}.error-card{grid-template-columns:1fr}.modal{padding:10px}.language-table{display:block;overflow-x:auto}.section-head{align-items:flex-start;flex-direction:column}}