:root{--ep-primary:#4f46e5;--ep-secondary:#0ea5e9;--ep-accent:#f59e0b;--ep-success:#10b981;--ep-danger:#ef4444;--ep-warning:#f59e0b;--ep-bg-light:#f8fafc;--ep-text-dark:#0f172a;--ep-text-muted:#64748b;--ep-border:#e2e8f0;--ep-card-shadow:0 1px 3px rgba(0,0,0,.08) , 0 4px 12px rgba(0,0,0,.06);--ep-card-hover:0 8px 24px rgba(0,0,0,.12);--ep-radius:12px;--ep-radius-sm:8px;--ep-transition:all .2s ease;--ep-font-body:'Inter' , -apple-system , sans-serif;--ep-font-head:'Poppins' , sans-serif}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family: var(--ep-font-body);color:var(--ep-text-dark);background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:var(--ep-primary);text-decoration:none;transition:var(--ep-transition)}a:hover{color:#3730a3}img{max-width:100%;height:auto}h1,h2,h3,h4,h5{font-family: var(--ep-font-head);font-weight:700;line-height:1.25}.ep-header{background:var(--ep-header-bg,#fff);color:var(--ep-header-text,var(--ep-text-dark));border-bottom:1px solid var(--ep-border);transition:box-shadow .3s ease , background .3s ease;z-index:1000}.ep-header--sticky{position:sticky;top:0}.ep-header.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.1)}.ep-header--dark{background:var(--ep-text-dark);color:#fff;border-color:#1e293b}.ep-header--colored{background:var(--ep-primary);color:#fff;border-color:transparent}.ep-header__inner{display:flex;align-items:center;height:64px;gap:24px}.ep-header__logo{display:flex;align-items:center;gap:8px;text-decoration:none;flex-shrink:0}.ep-logo-text{font-family: var(--ep-font-head);font-weight:800;font-size:1.25rem;color:var(--ep-primary);white-space:nowrap}.ep-logo-icon{font-size:1.4rem}.ep-header__logo img{height:38px;width:auto;object-fit:contain}.ep-header__nav{flex:1;display:flex;justify-content:center}.ep-nav-list{display:flex;align-items:center;gap:4px;list-style:none}.ep-nav-list li a{padding:6px 14px;border-radius:var(--ep-radius-sm);font-size:.9rem;font-weight:500;color:var(--ep-text-dark);transition:var(--ep-transition)}.ep-nav-list li a:hover,.ep-nav-list li.current-menu-item a{background:#f1f5f9;color:var(--ep-primary)}.ep-header--dark .ep-nav-list li a,.ep-header--colored .ep-nav-list li a{color:rgba(255,255,255,.85)}.ep-header--dark .ep-nav-list li a:hover,.ep-header--colored .ep-nav-list li a:hover{background:rgba(255,255,255,.15);color:#fff}.ep-header__right{display:flex;align-items:center;gap:8px;margin-left:auto}.ep-user-btn{display:flex;align-items:center;gap:8px;background:none;border:none;cursor:pointer;padding:4px 8px;border-radius:24px;transition:var(--ep-transition)}.ep-user-btn:hover{background:#f1f5f9}.ep-user-avatar{width:34px;height:34px;border-radius:50%;background:var(--ep-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex-shrink:0}.ep-user-name{font-size:.875rem;font-weight:500;color:var(--ep-text-dark)}.ep-user-dropdown{min-width:220px;border-radius:var(--ep-radius);border:1px solid var(--ep-border);box-shadow:var(--ep-card-shadow);padding:6px}.ep-dropdown-header{padding:12px;background:#f8fafc;border-radius:var(--ep-radius-sm);margin-bottom:4px}.ep-user-dropdown .dropdown-item{border-radius:var(--ep-radius-sm);padding:8px 12px;font-size:.875rem}.ep-user-dropdown .dropdown-item:hover{background:#f1f5f9}.btn-ghost-primary{background:none;color:var(--ep-primary);border:1.5px solid var(--ep-primary);border-radius:8px;padding:6px 14px;font-size:.875rem;font-weight:600;transition:var(--ep-transition)}.btn-ghost-primary:hover{background:var(--ep-primary);color:#fff}.ep-search-toggle{background:none;border:none;cursor:pointer;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--ep-text-muted);transition:var(--ep-transition)}.ep-search-toggle:hover{background:#f1f5f9;color:var(--ep-primary)}.ep-search-bar{max-height:0;overflow:hidden;background:#fff;border-top:1px solid var(--ep-border);transition:max-height .3s ease}.ep-search-bar.open{max-height:80px}.ep-search-inner{display:flex;align-items:center;gap:12px;padding:12px 0;position:relative}.ep-search-icon{font-size:1.1rem;color:var(--ep-text-muted);flex-shrink:0}.ep-search-input{flex:1;border:none;outline:none;font-size:1rem;font-family: var(--ep-font-body);color:var(--ep-text-dark);background:transparent}.ep-search-close{background:none;border:none;cursor:pointer;font-size:1rem;color:var(--ep-text-muted);padding:4px 8px}.ep-search-results{position:absolute;top:100%;left:0;right:0;background:#fff;border-radius:var(--ep-radius);box-shadow:0 8px 24px rgba(0,0,0,.12);border:1px solid var(--ep-border);z-index:2000;overflow:hidden}.ep-sr-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid #f1f5f9;color:var(--ep-text-dark);font-size:.875rem}.ep-sr-item:hover{background:#f8fafc}.ep-sr-icon{width:28px;text-align:center}.ep-sr-title{flex:1}.ep-sr-type{color:var(--ep-text-muted);font-size:.75rem}.ep-sr-empty{padding:16px;text-align:center;color:var(--ep-text-muted);font-size:.875rem}.ep-hamburger{background:none;border:none;cursor:pointer;font-size:1.5rem;color:var(--ep-text-dark);padding:4px 6px}.ep-mobile-menu{position:fixed;top:0;right:-320px;width:300px;height:100vh;background:#fff;z-index:9999;box-shadow:-4px 0 24px rgba(0,0,0,.15);transition:right .3s ease;overflow-y:auto}.ep-mobile-menu.open{right:0}.ep-mobile-menu__header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--ep-border)}.ep-mobile-menu__header button{background:none;border:none;cursor:pointer;font-size:1.3rem;color:var(--ep-text-muted)}.ep-mobile-nav{list-style:none;padding:12px}.ep-mobile-nav li a{display:block;padding:10px 12px;border-radius:var(--ep-radius-sm);font-weight:500;color:var(--ep-text-dark)}.ep-mobile-nav li a:hover{background:#f1f5f9;color:var(--ep-primary)}.ep-mobile-auth{padding:16px 12px 24px;border-top:1px solid var(--ep-border)}.ep-mobile-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:9998;opacity:0;pointer-events:none;transition:opacity .3s}.ep-mobile-overlay.open{opacity:1;pointer-events:auto}.ep-breadcrumb-wrap{padding-top:12px;padding-bottom:4px}.ep-bc-list{display:flex;flex-wrap:wrap;align-items:center;gap:4px;list-style:none;font-size:.8rem;color:var(--ep-text-muted)}.ep-bc-item a{color:var(--ep-text-muted)}.ep-bc-item a:hover{color:var(--ep-primary)}.ep-bc-item.active span{color:var(--ep-text-dark);font-weight:500}.ep-bc-sep{margin:0 2px;opacity:.6}.ep-hero{position:relative;background:#0f172a;padding:80px 0 60px;overflow:hidden;color:#fff}.ep-hero--gradient{background:linear-gradient(135deg,#0f172a 0%,#1e1b4b 50%,#0f172a 100%)}.ep-hero--minimal{background:#f8fafc;color:var(--ep-text-dark)}.ep-hero--image{background-size:cover;background-position:center}.ep-hero--image::after{content:'';position:absolute;inset:0;background:rgba(0,0,0,.55)}.ep-hero--image .ep-hero__container{position:relative;z-index:1}.ep-hero__gradient-orbs{position:absolute;inset:0;overflow:hidden;pointer-events:none}.ep-orb{position:absolute;border-radius:50%;background:radial-gradient(circle,var(--ep-primary) 0%,transparent 70%);opacity:.18;filter:blur(40px)}.ep-orb--1{width:500px;height:500px;top:-150px;right:-100px;background:radial-gradient(circle,#4f46e5,transparent 70%)}.ep-orb--2{width:400px;height:400px;bottom:-120px;left:-80px;background:radial-gradient(circle,#0ea5e9,transparent 70%)}.ep-orb--3{width:300px;height:300px;top:50%;left:40%;background:radial-gradient(circle,#f59e0b,transparent 70%);opacity:.1}.ep-hero__container{position:relative;z-index:1}.ep-hero__badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:24px;padding:6px 14px;font-size:.8rem;font-weight:500;color:rgba(255,255,255,.9);margin-bottom:20px}.ep-badge-dot{width:8px;height:8px;background:#10b981;border-radius:50%;animation:ep-pulse 2s infinite}@keyframes ep-pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.3)} }.ep-hero__heading{font-size:clamp(2rem,5vw,3.25rem);font-weight:800;line-height:1.15;margin-bottom:20px}.ep-hero__highlight{color:var(--ep-accent);position:relative}.ep-hero__sub{font-size:1.1rem;line-height:1.7;max-width:560px;margin-bottom:32px}.ep-hero--minimal .ep-hero__heading{color:var(--ep-text-dark)}.ep-hero--minimal .ep-hero__sub{color:var(--ep-text-muted)}.ep-hero__ctas{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:40px}.ep-hero__btn{display:inline-flex;align-items:center;padding:14px 28px;border-radius:10px;font-weight:700;font-size:1rem;transition:var(--ep-transition);text-decoration:none}.ep-hero__btn--primary{background:var(--ep-accent);color:#0f172a}.ep-hero__btn--primary:hover{background:#e08c00;transform:translateY(-2px);box-shadow:0 8px 20px rgba(245,158,11,.4);color:#0f172a}.ep-hero__btn--ghost{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.3);backdrop-filter:blur(8px)}.ep-hero__btn--ghost:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-2px)}.ep-hero--minimal .ep-hero__btn--ghost{color:var(--ep-primary);border-color:var(--ep-primary);background:transparent}.ep-hero--minimal .ep-hero__btn--ghost:hover{background:var(--ep-primary);color:#fff}.ep-hero__stats{display:flex;align-items:center;gap:28px;flex-wrap:wrap}.ep-hero__stat-num{font-size:1.7rem;font-weight:800;color:#fff;line-height:1}.ep-hero__stat-label{font-size:.78rem;color:rgba(255,255,255,.6);text-transform:uppercase;letter-spacing:.5px}.ep-hero--minimal .ep-hero__stat-num{color:var(--ep-primary)}.ep-hero--minimal .ep-hero__stat-label{color:var(--ep-text-muted)}.ep-hero__stat-divider{width:1px;height:36px;background:rgba(255,255,255,.2)}.ep-hero__visual{position:relative;height:320px}.ep-hero__mockup{position:relative;height:100%}.ep-mockup-card{position:absolute;background:rgba(255,255,255,.95);backdrop-filter:blur(20px);border-radius:16px;padding:16px 20px;color:#0f172a;box-shadow:0 20px 40px rgba(0,0,0,.3)}.ep-mockup-card--main{width:280px;top:10%;left:10%}.ep-mockup-card--streak{bottom:12%;right:5%;padding:12px 16px;display:flex;align-items:center;gap:8px;font-size:.875rem;font-weight:700;animation:ep-float 3s ease-in-out infinite}.ep-mockup-card--score{top:5%;right:0;text-align:center;font-size:.75rem;animation:ep-float 3s ease-in-out 1.5s infinite}@keyframes ep-float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }.ep-mockup-q{font-weight:600;font-size:.8rem;margin-bottom:10px;line-height:1.4}.ep-mockup-opts{display:flex;flex-direction:column;gap:5px}.ep-mockup-opt{font-size:.72rem;padding:5px 9px;border-radius:6px;background:#f1f5f9;color:#334155}.ep-mockup-opt--correct{background:#dcfce7;color:#15803d;font-weight:600}.ep-mockup-score-ring{width:56px;height:56px;border-radius:50%;background:conic-gradient(var(--ep-primary) 82%,#e2e8f0 0);display:flex;align-items:center;justify-content:center;margin:0 auto 6px}.ep-mockup-score-ring span{font-size:.75rem;font-weight:800;background:#fff;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center}.ep-hero__search{padding:0 0 40px}.ep-hero__search-box{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-radius:12px;padding:12px 16px;max-width:640px;margin:0 auto;box-shadow:0 8px 32px rgba(0,0,0,.2)}.ep-hero__search-box i{color:var(--ep-text-muted);font-size:1.1rem;flex-shrink:0}.ep-hero__search-box input{flex:1;border:none;outline:none;font-size:1rem;color:var(--ep-text-dark);background:transparent}.ep-hero__search-box button{background:var(--ep-primary);color:#fff;border:none;padding:8px 20px;border-radius:8px;font-weight:600;cursor:pointer;transition:var(--ep-transition)}.ep-hero__search-box button:hover{background:#3730a3}.ep-hero__popular-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:14px}.ep-pop-tag{background:rgba(255,255,255,.12);color:rgba(255,255,255,.85);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:4px 12px;font-size:.78rem;font-weight:500;transition:var(--ep-transition)}.ep-pop-tag:hover{background:rgba(255,255,255,.25);color:#fff}.ep-section-header{text-align:center;margin-bottom:40px}.ep-section-title{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:800;margin-bottom:8px;color:var(--ep-text-dark)}.ep-section-sub{color:var(--ep-text-muted);font-size:1rem}.ep-exam-blocks{padding:60px 0;background:var(--ep-bg-light)}.ep-exam-block{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);margin-bottom:28px;overflow:hidden}.ep-exam-block__header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 16px;border-bottom:1px solid var(--ep-border)}.ep-exam-block__title-wrap{display:flex;align-items:center;gap:14px}.ep-exam-block__icon{font-size:2rem;width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:var(--ep-exam-color,var(--ep-primary)) 15;border-radius:12px}.ep-exam-block__title{font-size:1.1rem;font-weight:700;margin-bottom:2px}.ep-exam-block__title a{color:var(--ep-text-dark)}.ep-exam-block__title a:hover{color:var(--ep-primary)}.ep-exam-block__meta{font-size:.78rem;color:var(--ep-text-muted)}.ep-exam-block__view-all{font-size:.85rem;font-weight:600;color:var(--ep-primary)}.ep-exam-block__view-all:hover{color:#3730a3}.ep-subjects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:1px;background:var(--ep-border)}.ep-subject-card{background:#fff;padding:16px 12px;text-align:center;text-decoration:none;transition:var(--ep-transition);display:flex;flex-direction:column;align-items:center;gap:8px;position:relative;overflow:hidden}.ep-subject-card:hover{background:#fafbff;transform:translateY(-1px);z-index:1;box-shadow:0 4px 12px rgba(79,70,229,.1)}.ep-subject-card__icon{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;border:1.5px solid var(--ep-border);overflow:hidden}.ep-subject-card__img{width:100%;height:100%;object-fit:cover}.ep-subject-card__emoji{font-size:1.6rem}.ep-subject-card__name{font-size:.78rem;font-weight:600;color:var(--ep-text-dark);line-height:1.3}.ep-subject-card__count{font-size:.7rem;color:var(--ep-text-muted)}.ep-subject-card__progress{position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--ep-border)}.ep-progress-bar{height:100%;border-radius:2px;transition:width .4s ease}.ep-subject-card--more .ep-subject-card__emoji{font-size:1.1rem;font-weight:800;color:var(--ep-text-muted)}.ep-features-strip{background:#fff;padding:40px 0;border-top:1px solid var(--ep-border)}.ep-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}.ep-feature-item{display:flex;align-items:center;gap:14px}.ep-feature-icon{font-size:2rem;width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:var(--ep-bg-light);border-radius:12px;flex-shrink:0}.ep-feature-text strong{display:block;font-size:.9rem;font-weight:700;margin-bottom:2px}.ep-feature-text span{font-size:.78rem;color:var(--ep-text-muted)}.ep-exam-banner{color:#fff;padding:40px 0;margin-bottom:0}.ep-exam-banner__inner{display:flex;align-items:center;gap:24px}.ep-exam-banner__icon{font-size:3.5rem;width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.15);border-radius:16px;flex-shrink:0}.ep-exam-banner__title{font-size:1.8rem;font-weight:800;margin-bottom:6px}.ep-exam-banner__meta{display:flex;gap:20px;font-size:.85rem;opacity:.85}.ep-exam-banner__desc{margin-top:8px;font-size:.9rem;opacity:.8;max-width:500px}.ep-subjects-list{display:flex;flex-direction:column;gap:16px}.ep-subject-row{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);overflow:hidden;transition:var(--ep-transition)}.ep-subject-row:hover{box-shadow:var(--ep-card-hover);transform:translateY(-2px)}.ep-subject-row__header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;gap:16px}.ep-subject-row__left{display:flex;align-items:center;gap:14px;flex:1;min-width:0}.ep-subject-row__icon{width:56px;height:56px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;flex-shrink:0;overflow:hidden}.ep-subject-row__icon img{width:100%;height:100%;object-fit:cover}.ep-subject-row__title{font-size:1rem;font-weight:700;margin-bottom:3px}.ep-subject-row__title a{color:var(--ep-text-dark)}.ep-subject-row__meta{font-size:.78rem;color:var(--ep-text-muted);display:flex;gap:12px;flex-wrap:wrap}.ep-subject-row__btn{background:var(--ep-primary);color:#fff;padding:8px 18px;border-radius:8px;font-weight:600;font-size:.85rem;white-space:nowrap;flex-shrink:0}.ep-subject-row__btn:hover{opacity:.9;color:#fff;transform:translateY(-1px)}.ep-subject-row__subtopics{padding:10px 20px 16px;display:flex;flex-wrap:wrap;gap:8px;border-top:1px solid var(--ep-border)}.ep-subtopic-chip{background:#f1f5f9;color:var(--ep-text-dark);border-radius:20px;padding:4px 12px;font-size:.75rem;font-weight:500;transition:var(--ep-transition);display:flex;align-items:center;gap:4px}.ep-subtopic-chip:hover{background:var(--ep-primary);color:#fff}.ep-subtopic-chip--more{background:#e2e8f0;color:var(--ep-text-muted)}.ep-chip-count{background:rgba(0,0,0,.08);border-radius:10px;padding:1px 6px;font-size:.7rem}.ep-progress-mini{height:4px;background:#e2e8f0;border-radius:2px;overflow:hidden}.ep-progress-mini__bar{height:100%;border-radius:2px;transition:width .5s ease}.ep-subject-banner{color:#fff;padding:48px 0}.ep-subject-banner__inner{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.ep-subject-banner__icon{width:80px;height:80px;border-radius:16px;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;font-size:2.5rem;overflow:hidden;flex-shrink:0}.ep-subject-banner__icon img{width:100%;height:100%;object-fit:cover}.ep-subject-banner__exam{font-size:.8rem;opacity:.8;margin-bottom:4px}.ep-subject-banner__title{font-size:1.8rem;font-weight:800;margin-bottom:8px}.ep-subject-banner__meta{display:flex;gap:18px;font-size:.85rem;opacity:.85;flex-wrap:wrap}.ep-subtopics-list{display:flex;flex-direction:column;gap:8px}.ep-subtopic-row{display:flex;align-items:center;gap:14px;background:#fff;border-radius:var(--ep-radius-sm);padding:14px 16px;border:1.5px solid var(--ep-border);text-decoration:none;color:var(--ep-text-dark);transition:var(--ep-transition)}.ep-subtopic-row:hover{border-color:var(--ep-primary);box-shadow:0 2px 12px rgba(79,70,229,.12);transform:translateX(4px)}.ep-subtopic-row--done{border-color:var(--ep-success);background:#f0fdf4}.ep-subtopic-row--started{border-left:3px solid var(--ep-accent)}.ep-subtopic-row__num{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem;flex-shrink:0}.ep-subtopic-row__content{flex:1;min-width:0}.ep-subtopic-row__title{font-weight:600;font-size:.9rem}.ep-subtopic-row__meta{font-size:.75rem;color:var(--ep-text-muted);display:flex;gap:12px;margin-top:2px}.ep-subtopic-row__arrow{color:var(--ep-text-muted);font-size:1.1rem}.ep-subtopic-row:hover .ep-subtopic-row__arrow{color:var(--ep-primary)}.ep-mcq-header{background:#fff;border-radius:var(--ep-radius);padding:20px 24px;margin-bottom:20px;box-shadow:var(--ep-card-shadow);border-left:4px solid var(--ep-primary)}.ep-mcq-header__breadpath{font-size:.75rem;color:var(--ep-text-muted);margin-bottom:4px;display:flex;align-items:center;flex-wrap:wrap;gap:2px}.ep-mcq-header__title{font-size:1.25rem;font-weight:800;margin-bottom:6px}.ep-mcq-header__meta{font-size:.8rem;color:var(--ep-text-muted);display:flex;gap:16px;flex-wrap:wrap}.ep-live-stats{display:flex;gap:20px;margin-top:14px;padding-top:14px;border-top:1px solid var(--ep-border);flex-wrap:wrap}.ep-live-stat{text-align:center}.ep-live-stat__val{font-size:1.2rem;font-weight:800;display:block}.ep-live-stat__label{font-size:.7rem;color:var(--ep-text-muted);text-transform:uppercase;letter-spacing:.5px}.ep-live-stat--streak .ep-live-stat__val{color:#f97316}@keyframes ep-pop { 0%{transform:scale(1)} 40%{transform:scale(1.25)} 100%{transform:scale(1)} }.ep-stat-pop{animation:ep-pop .4s ease}.ep-question-card{background:#fff;border-radius:var(--ep-radius);margin-bottom:16px;box-shadow:var(--ep-card-shadow);border:1.5px solid var(--ep-border);overflow:hidden;transition:border-color .3s ease , box-shadow .3s ease}.ep-question-card:hover{box-shadow:var(--ep-card-hover)}.ep-qc--correct{border-color:var(--ep-success)}.ep-qc--wrong{border-color:var(--ep-danger)}.ep-qc__header{display:flex;align-items:center;gap:10px;padding:14px 16px 0}.ep-qc__num{width:32px;height:32px;border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem;flex-shrink:0}.ep-qc__meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.ep-qc__actions{display:flex;align-items:center;gap:6px}.ep-qc__status{font-size:.75rem;font-weight:700;padding:2px 8px;border-radius:4px}.ep-qc__status--correct{color:var(--ep-success);background:#dcfce7}.ep-qc__status--wrong{color:var(--ep-danger);background:#fee2e2}.ep-qc__link{color:var(--ep-text-muted);font-size:.8rem}.ep-qc__link:hover{color:var(--ep-primary)}.ep-qc__question{font-size:.95rem;font-weight:600;line-height:1.55;padding:12px 16px;color:var(--ep-text-dark)}.ep-qc__options{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 16px 14px}@media (max-width:576px){.ep-qc__options{grid-template-columns:1fr}}.ep-option{display:flex;align-items:center;gap:10px;background:#f8fafc;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);padding:10px 12px;font-size:.85rem;color:var(--ep-text-dark);cursor:pointer;transition:var(--ep-transition);text-align:left;width:100%}.ep-option:hover:not(:disabled) {background:#eef2ff;border-color:var(--ep-primary);color:var(--ep-primary)}.ep-option:disabled{cursor:not-allowed}.ep-option--correct{background:#dcfce7!important;border-color:var(--ep-success)!important;color:#15803d!important;font-weight:600}.ep-option--wrong{background:#fee2e2!important;border-color:var(--ep-danger)!important;color:#b91c1c!important;font-weight:600}.ep-option--disabled{opacity:.5}.ep-option__letter{width:26px;height:26px;border-radius:50%;background:var(--ep-border);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.75rem;flex-shrink:0}.ep-option--correct .ep-option__letter{background:var(--ep-success);color:#fff}.ep-option--wrong .ep-option__letter{background:var(--ep-danger);color:#fff}.ep-option:hover:not(:disabled) .ep-option__letter {background:var(--ep-primary);color:#fff}.ep-option__text{flex:1;line-height:1.4}.ep-qc__explanation{padding:0 16px 16px}.ep-explanation-box{background:#fffbeb;border-left:4px solid var(--ep-accent);border-radius:var(--ep-radius-sm);padding:12px 16px}.ep-explanation-box__title{font-weight:700;font-size:.8rem;color:#92400e;margin-bottom:6px}.ep-explanation-box__text{font-size:.85rem;color:#78350f;line-height:1.6}.ep-diff-badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:.7rem;font-weight:700;color:#fff}.ep-bookmark-btn{background:none;border:none;cursor:pointer;color:var(--ep-text-muted);font-size:1rem;padding:4px 6px;border-radius:6px;transition:var(--ep-transition)}.ep-bookmark-btn:hover,.ep-bookmark-btn.bookmarked{color:var(--ep-accent)}.ep-bookmark-btn.bookmarked i{animation:ep-pop .3s ease}.ep-mcq-pagination{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:24px 0;flex-wrap:wrap}.ep-page-numbers{display:flex;gap:6px;flex-wrap:wrap}.ep-page-num{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:8px;border:1.5px solid var(--ep-border);color:var(--ep-text-dark);font-size:.85rem;font-weight:600;transition:var(--ep-transition)}.ep-page-num:hover,.ep-page-num.active{background:var(--ep-primary);color:#fff;border-color:var(--ep-primary)}.ep-page-btn{display:flex;align-items:center;gap:4px;padding:8px 16px;background:#fff;border:1.5px solid var(--ep-border);border-radius:8px;font-size:.85rem;font-weight:600;color:var(--ep-text-dark);transition:var(--ep-transition)}.ep-page-btn:hover{background:var(--ep-primary);color:#fff;border-color:var(--ep-primary)}.ep-login-cta{display:flex;align-items:center;gap:16px;background:#eef2ff;border-radius:var(--ep-radius);padding:20px 24px;margin-top:16px;flex-wrap:wrap}.ep-login-cta__icon{font-size:2rem}.ep-login-cta h4{font-size:1rem;margin-bottom:2px}.ep-login-cta p{font-size:.85rem;color:var(--ep-text-muted);margin:0}.ep-switcher-card{background:#fff;border-radius:var(--ep-radius);padding:20px;box-shadow:var(--ep-card-shadow);border:1px solid var(--ep-border)}.ep-switcher-card__header{font-weight:700;font-size:.9rem;color:var(--ep-text-dark);margin-bottom:16px;display:flex;align-items:center}.ep-switcher-group{margin-bottom:12px}.ep-switcher-label{font-size:.75rem;font-weight:600;color:var(--ep-text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:5px;display:block}.ep-switcher-select{width:100%;padding:9px 12px;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);font-size:.875rem;color:var(--ep-text-dark);background:#fff;cursor:pointer;outline:none}.ep-switcher-select:focus{border-color:var(--ep-primary)}.ep-switcher-go{width:100%;padding:10px;background:var(--ep-primary);color:#fff;border:none;border-radius:var(--ep-radius-sm);font-weight:700;font-size:.875rem;cursor:pointer;transition:var(--ep-transition);margin-top:8px;display:flex;align-items:center;justify-content:center;gap:4px}.ep-switcher-go:hover{background:#3730a3}.ep-switcher-nav{display:flex;margin-top:12px;gap:8px}.ep-switcher-nav__btn{font-size:.75rem;font-weight:600;color:var(--ep-text-muted);padding:5px 10px;background:#f1f5f9;border-radius:6px;flex:1;display:flex;align-items:center;white-space:nowrap;overflow:hidden}.ep-switcher-nav__btn:hover{background:var(--ep-primary);color:#fff}.ep-switcher-nav__btn--next{justify-content:flex-end}.ep-session-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;text-align:center}.ep-session-stat__num{font-size:1.4rem;font-weight:800;display:block}.ep-session-stat__label{font-size:.7rem;color:var(--ep-text-muted)}.ep-progress-bar-wrap{margin-top:4px}.ep-progress-bar-bg{height:8px;background:#e2e8f0;border-radius:4px;overflow:hidden}.ep-progress-label{font-size:.72rem;color:var(--ep-text-muted);margin-top:4px;text-align:right}.ep-ad-slot{margin:16px 0;text-align:center}.ep-sidebar-ad{}.ep-sidebar-card{background:#fff;border-radius:var(--ep-radius);padding:18px;box-shadow:var(--ep-card-shadow);border:1px solid var(--ep-border)}.ep-sidebar-card__title{font-weight:700;font-size:.875rem;margin-bottom:12px;display:flex;align-items:center}.ep-sidebar-card--cta{text-align:center}.ep-sidebar-cta-icon{font-size:2.5rem;margin-bottom:8px}.ep-sidebar-card--cta h4{font-size:1rem;margin-bottom:6px}.ep-sidebar-card--cta p{font-size:.82rem;color:var(--ep-text-muted);margin-bottom:14px}.ep-sidebar-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--ep-radius-sm);font-size:.85rem;color:var(--ep-text-dark);transition:var(--ep-transition)}.ep-sidebar-item:hover{background:#f1f5f9;color:var(--ep-primary)}.ep-sidebar-item__icon{font-size:1.2rem;width:28px;text-align:center}.ep-sidebar-progress{display:flex;align-items:center;gap:16px}.ep-sp-ring{position:relative;width:72px;height:72px}.ep-sp-ring::before{content:'';position:absolute;inset:0;border-radius:50%;background: conic-gradient(var(--c,var(--ep-primary)) calc(var(--p,0)*1%), #e2e8f0 0)}.ep-sp-ring__inner{position:absolute;inset:8px;background:#fff;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:.7rem}.ep-sp-ring__inner strong{font-size:.95rem;font-weight:800}.ep-sp-stats{display:flex;flex-direction:column;gap:4px}.ep-sp-stats div{font-size:.8rem;color:var(--ep-text-muted)}.ep-sp-stats div span{font-weight:700;color:var(--ep-text-dark)}.ep-circular-progress{position:relative;width:72px;height:72px}.ep-circular-progress::before{content:'';position:absolute;inset:0;border-radius:50%;background:conic-gradient(var(--c,#fff) calc(var(--p,0)*1%), rgba(255,255,255,0.2) 0)}.ep-circular-progress__inner{position:absolute;inset:8px;background:rgba(0,0,0,.2);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:.85rem}.ep-auth-page{min-height:calc(100vh - 120px);display:flex;align-items:center;background:var(--ep-bg-light);padding:40px 0}.ep-auth-card{background:#fff;border-radius:20px;padding:40px 36px;box-shadow:0 4px 24px rgba(0,0,0,.1)}.ep-auth-card__header{text-align:center;margin-bottom:24px}.ep-auth-logo{font-size:2.5rem;display:block;margin-bottom:12px}.ep-auth-title{font-size:1.6rem;font-weight:800;margin-bottom:6px}.ep-auth-sub{color:var(--ep-text-muted);font-size:.9rem}.ep-auth-social-hint{text-align:center;background:#f0fdf4;border-radius:var(--ep-radius-sm);padding:10px;font-size:.82rem;color:#15803d;margin-bottom:20px}.ep-auth-perks{margin-bottom:20px}.ep-perk{font-size:.85rem;padding:4px 0}.ep-auth-form{margin-bottom:16px}.ep-form-group{margin-bottom:16px}.ep-label{display:flex;align-items:center;justify-content:space-between;font-size:.85rem;font-weight:600;margin-bottom:6px;color:var(--ep-text-dark)}.ep-forgot-link{font-size:.78rem;font-weight:500;color:var(--ep-primary)}.ep-input-wrap{position:relative}.ep-input{width:100%;padding:11px 14px;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);font-size:.9rem;color:var(--ep-text-dark);background:#fff;outline:none;transition:var(--ep-transition);font-family: var(--ep-font-body)}.ep-input:focus{border-color:var(--ep-primary);box-shadow:0 0 0 3px rgba(79,70,229,.1)}.ep-input--icon{padding-left:38px;padding-right:40px}.ep-input-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--ep-text-muted);font-size:1rem;pointer-events:none}.ep-pass-toggle{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;color:var(--ep-text-muted);padding:4px}.ep-pass-toggle:hover{color:var(--ep-primary)}.ep-form-check{display:flex;align-items:center;gap:8px;font-size:.82rem;margin-bottom:16px}.ep-form-check input{flex-shrink:0}.ep-password-strength{margin-top:6px;display:flex;align-items:center;gap:8px}.ep-pw-bar{height:4px;border-radius:2px;transition:all .3s;min-width:0;flex-shrink:0}#pwBar{width:0}#pwLabel{font-size:.72rem;font-weight:600}.ep-auth-btn{width:100%;padding:12px;background:var(--ep-primary);color:#fff;border:none;border-radius:var(--ep-radius-sm);font-size:1rem;font-weight:700;cursor:pointer;transition:var(--ep-transition);display:flex;align-items:center;justify-content:center;gap:8px}.ep-auth-btn:hover:not(:disabled) {background:#3730a3;transform:translateY(-1px);box-shadow:0 6px 16px rgba(79,70,229,.35)}.ep-auth-btn:disabled{opacity:.7;cursor:not-allowed}.ep-auth-divider{text-align:center;position:relative;margin:20px 0}.ep-auth-divider::before{content:'';position:absolute;top:50%;left:0;right:0;height:1px;background:var(--ep-border)}.ep-auth-divider span{position:relative;background:#fff;padding:0 12px;font-size:.8rem;color:var(--ep-text-muted)}.ep-auth-switch-btn{display:block;text-align:center;padding:10px;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);font-size:.875rem;font-weight:600;color:var(--ep-primary);transition:var(--ep-transition)}.ep-auth-switch-btn:hover{background:#f0f4ff;border-color:var(--ep-primary)}.ep-dashboard{background:var(--ep-bg-light);min-height:100vh}.ep-dashboard__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;flex-wrap:wrap;gap:12px}.ep-dashboard__title{font-size:1.5rem;font-weight:800;margin-bottom:4px}.ep-dashboard__sub{color:var(--ep-text-muted)}.ep-dash-stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;margin-bottom:32px}.ep-dash-stat{background:#fff;border-radius:var(--ep-radius);padding:20px;display:flex;align-items:center;gap:14px;box-shadow:var(--ep-card-shadow);border-left:4px solid transparent}.ep-dash-stat--blue{border-color:var(--ep-primary)}.ep-dash-stat--green{border-color:var(--ep-success)}.ep-dash-stat--purple{border-color:#8b5cf6}.ep-dash-stat--orange{border-color:#f97316}.ep-dash-stat--teal{border-color:var(--ep-accent)}.ep-dash-stat__icon{font-size:1.5rem;flex-shrink:0}.ep-dash-stat__num{font-size:1.5rem;font-weight:800;display:block;line-height:1}.ep-dash-stat__label{font-size:.72rem;color:var(--ep-text-muted);text-transform:uppercase;letter-spacing:.5px}.ep-dash-card{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);overflow:hidden}.ep-dash-card__header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--ep-border)}.ep-dash-card__title{font-size:1rem;font-weight:700;margin:0}.ep-dash-card__link{font-size:.8rem;font-weight:600;color:var(--ep-primary)}.ep-continue-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1px;background:var(--ep-border)}.ep-continue-item{background:#fff;padding:16px;display:flex;align-items:center;gap:10px;text-decoration:none;transition:var(--ep-transition)}.ep-continue-item:hover{background:#fafbff}.ep-continue-item__color-bar{width:4px;height:48px;border-radius:2px;flex-shrink:0}.ep-continue-item__content{flex:1;min-width:0}.ep-continue-item__subject{font-size:.7rem;color:var(--ep-text-muted);text-transform:uppercase;letter-spacing:.5px}.ep-continue-item__name{font-size:.85rem;font-weight:600;color:var(--ep-text-dark);margin-top:2px}.ep-continue-item__arrow{color:var(--ep-text-muted);flex-shrink:0}.ep-mini-progress{height:4px;background:#e2e8f0;border-radius:2px;overflow:hidden}.ep-mini-progress__bar{height:100%;border-radius:2px}.ep-activity-list{display:flex;flex-direction:column}.ep-activity-item{display:flex;align-items:center;gap:12px;padding:12px 20px;border-bottom:1px solid #f1f5f9}.ep-activity-item:last-child{border-bottom:none}.ep-activity-icon{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;color:#fff;flex-shrink:0}.ep-activity-icon--correct{background:var(--ep-success)}.ep-activity-icon--wrong{background:var(--ep-danger)}.ep-activity-q{font-size:.82rem;color:var(--ep-text-dark)}.ep-activity-meta{font-size:.72rem}.ep-activity-badge{font-size:.7rem;font-weight:700;padding:2px 8px;border-radius:4px;flex-shrink:0}.ep-badge--correct{background:#dcfce7;color:#15803d}.ep-badge--wrong{background:#fee2e2;color:#b91c1c}.ep-quick-links{display:flex;flex-direction:column;gap:2px}.ep-quick-link{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--ep-radius-sm);font-size:.875rem;font-weight:500;color:var(--ep-text-dark);transition:var(--ep-transition)}.ep-quick-link:hover{background:#f1f5f9}.ep-motivational{background:linear-gradient(135deg,#eef2ff,#e0e7ff);border:none}.ep-motivational p{font-size:.875rem;color:#3730a3;font-weight:500;font-style:italic}.ep-bookmarks-list{display:flex;flex-direction:column;gap:16px}.ep-bm-card{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);border:1.5px solid var(--ep-border);overflow:hidden;transition:opacity .3s ease , transform .3s ease}.ep-bm-card__header{display:flex;align-items:center;gap:10px;padding:14px 16px 8px}.ep-bm-card__num{width:28px;height:28px;background:#f1f5f9;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.78rem}.ep-bm-card__meta{display:flex;align-items:center;gap:8px}.ep-bm-topic{font-size:.72rem;background:#f1f5f9;padding:2px 8px;border-radius:4px;color:var(--ep-text-muted)}.ep-bm-question{font-size:.9rem;font-weight:600;line-height:1.55;padding:8px 16px 12px}.ep-bm-options{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:0 16px 14px}@media (max-width:576px){.ep-bm-options{grid-template-columns:1fr}}.ep-bm-opt{display:flex;align-items:center;gap:8px;padding:8px 10px;background:#f8fafc;border-radius:var(--ep-radius-sm);font-size:.82rem;border:1.5px solid var(--ep-border)}.ep-bm-opt--correct{background:#dcfce7;border-color:var(--ep-success);color:#15803d;font-weight:600}.ep-bm-opt--wrong{background:#fee2e2;border-color:var(--ep-danger);color:#b91c1c}.ep-bm-opt__letter{width:22px;height:22px;background:var(--ep-border);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.72rem;flex-shrink:0}.ep-bm-explanation{padding:0 16px 14px}.ep-expl-toggle{background:none;border:none;font-size:.8rem;font-weight:600;color:var(--ep-primary);cursor:pointer;padding:0}.ep-expl-body{font-size:.82rem;line-height:1.6;color:var(--ep-text-muted);margin-top:6px;padding:10px;background:#fffbeb;border-radius:var(--ep-radius-sm)}.ep-profile-avatar{width:72px;height:72px;border-radius:50%;background:var(--ep-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.3rem;margin:0 auto 12px}.ep-profile-stats{display:flex;justify-content:center;gap:24px}.ep-profile-stats div{text-align:center}.ep-profile-stats strong{display:block;font-size:1.1rem}.ep-footer{padding:60px 0 0}.ep-footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;margin-bottom:40px}@media (max-width:992px){.ep-footer__grid{grid-template-columns:1fr 1fr}}@media (max-width:576px){.ep-footer__grid{grid-template-columns:1fr}}.ep-footer__logo{display:inline-block;margin-bottom:12px}.ep-footer__logo-text{font-family: var(--ep-font-head);font-size:1.2rem;font-weight:800;color:#fff}.ep-footer__logo img{height:36px;filter:brightness(0) invert(1)}.ep-footer__tagline{font-size:.875rem;margin-bottom:20px;line-height:1.6}.ep-footer__heading{font-size:.85rem;font-weight:700;color:#fff;text-transform:uppercase;letter-spacing:.8px;margin-bottom:16px}.ep-footer__links{list-style:none;display:flex;flex-direction:column;gap:8px}.ep-footer__links li a{font-size:.85rem;transition:var(--ep-transition)}.ep-footer__links li a:hover{color:#fff!important}.ep-social-links{display:flex;gap:10px;flex-wrap:wrap}.ep-social-link{width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;font-size:1rem;color:rgba(255,255,255,.7);transition:var(--ep-transition)}.ep-social-link:hover{background:var(--ep-primary);color:#fff;transform:translateY(-2px)}.ep-footer__newsletter{display:flex;gap:8px;margin-top:10px}.ep-newsletter-input{flex:1;padding:9px 12px;border:1px solid rgba(255,255,255,.15);border-radius:var(--ep-radius-sm);background:rgba(255,255,255,.08);color:#fff;font-size:.85rem;outline:none}.ep-newsletter-input::placeholder{color:rgba(255,255,255,.4)}.ep-newsletter-btn{padding:9px 16px;background:var(--ep-primary);color:#fff;border:none;border-radius:var(--ep-radius-sm);font-size:.82rem;font-weight:700;cursor:pointer}.ep-footer__bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;border-top:1px solid rgba(255,255,255,.08);padding:20px 0}.ep-footer__copy{font-size:.82rem}.ep-footer__legal{display:flex;align-items:center;gap:10px;font-size:.82rem}.ep-footer__legal a{transition:color .2s}.ep-footer__legal a:hover{color:#fff!important}.ep-toast{position:fixed;bottom:24px;right:24px;padding:12px 20px;border-radius:var(--ep-radius-sm);font-size:.875rem;font-weight:600;color:#fff;z-index:9999;opacity:0;transform:translateY(20px);transition:all .3s ease;pointer-events:none;box-shadow:0 4px 16px rgba(0,0,0,.2)}.ep-toast--visible{opacity:1;transform:translateY(0)}.ep-toast--success{background:var(--ep-success)}.ep-toast--danger{background:var(--ep-danger)}.ep-toast--info{background:var(--ep-primary)}.ep-toast--warning{background:var(--ep-warning);color:#0f172a}.ep-streak-celebration{position:fixed;top:80px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#f97316,#ef4444);color:#fff;padding:14px 28px;border-radius:50px;font-weight:800;font-size:1.1rem;box-shadow:0 8px 24px rgba(239,68,68,.4);z-index:9999;animation:ep-bounce .5s ease}@keyframes ep-bounce { 0%{transform:translateX(-50%) scale(0.5)} 60%{transform:translateX(-50%) scale(1.1)} 100%{transform:translateX(-50%) scale(1)} }.ep-empty-state{text-align:center;padding:60px 20px}.ep-empty-icon{font-size:4rem;margin-bottom:16px;opacity:.6}.ep-empty-state h3{font-size:1.2rem;margin-bottom:8px}.ep-empty-state p{color:var(--ep-text-muted)}.ep-page-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.ep-page-title{font-size:1.4rem;font-weight:800}.ep-count-badge{background:var(--ep-primary);color:#fff;padding:4px 12px;border-radius:20px;font-size:.8rem;font-weight:700}.ep-pagination{display:flex;gap:6px;flex-wrap:wrap}.ep-form-card{background:#fff;border-radius:var(--ep-radius);padding:28px;box-shadow:var(--ep-card-shadow)}.ep-form-group{margin-bottom:18px}.ep-form-row{display:flex;gap:16px;flex-wrap:wrap}.ep-form-row .ep-form-group{flex:1;min-width:200px}.ep-textarea{resize:vertical;min-height:80px}.ep-mono{font-family:'Courier New',monospace;font-size:.82rem}@media (max-width:768px){.ep-hero{padding:56px 0 40px}.ep-hero__ctas{flex-direction:column;align-items:flex-start}.ep-hero__btn{width:100%;justify-content:center}.ep-subjects-grid{grid-template-columns:repeat(3,1fr)}.ep-exam-block__view-all{display:none}.ep-dash-stats{grid-template-columns:repeat(2,1fr)}.ep-auth-card{padding:28px 20px}}@media (max-width:480px){.ep-subjects-grid{grid-template-columns:repeat(2,1fr)}.ep-dash-stats{grid-template-columns:1fr 1fr}}.ep-sq-card{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);border:1.5px solid var(--ep-border);overflow:hidden;margin-bottom:16px}.ep-sq-meta{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 0;gap:8px;flex-wrap:wrap}.ep-sq-meta__left,.ep-sq-meta__right{display:flex;align-items:center;gap:8px}.ep-sq-topic-tag{font-size:.72rem;background:#f1f5f9;padding:3px 10px;border-radius:12px;color:var(--ep-text-muted)}.ep-share-btn{background:none;border:1px solid var(--ep-border);color:var(--ep-text-muted);border-radius:6px;padding:4px 10px;cursor:pointer;font-size:.78rem;display:flex;align-items:center;gap:4px}.ep-share-btn:hover{background:var(--ep-primary);color:#fff;border-color:var(--ep-primary)}.ep-sq-question{font-size:1rem;font-weight:600;line-height:1.65;padding:14px 16px 10px;color:var(--ep-text-dark)}.ep-sq-qnum{display:inline-block;background:var(--ep-primary);color:#fff;border-radius:6px;padding:2px 8px;font-size:.72rem;font-weight:700;margin-right:8px;vertical-align:middle}.ep-sq-options{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 16px 14px}@media (max-width:576px){.ep-sq-options{grid-template-columns:1fr}}.ep-sq-option{display:flex;align-items:center;gap:10px;background:#f8fafc;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);padding:11px 13px;cursor:pointer;transition:var(--ep-transition);text-align:left;width:100%;font-size:.875rem}.ep-sq-option:hover:not(:disabled) {background:#eef2ff;border-color:var(--ep-primary);color:var(--ep-primary)}.ep-sq-option:disabled{cursor:not-allowed}.ep-sq-opt--selected{background:#eef2ff!important;border-color:var(--ep-primary)!important}.ep-sq-opt--correct{background:#dcfce7!important;border-color:var(--ep-success)!important;color:#15803d!important;font-weight:600}.ep-sq-opt--wrong{background:#fee2e2!important;border-color:var(--ep-danger)!important;color:#b91c1c!important;font-weight:600}.ep-sq-opt--disabled{opacity:.5}.ep-sq-opt__letter{width:28px;height:28px;border-radius:50%;background:var(--ep-border);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.75rem;flex-shrink:0}.ep-sq-opt--correct .ep-sq-opt__letter{background:var(--ep-success);color:#fff}.ep-sq-opt--wrong .ep-sq-opt__letter{background:var(--ep-danger);color:#fff}.ep-sq-submit{display:flex;align-items:center;gap:12px;padding:0 16px 16px}.ep-sq-submit-btn{background:var(--ep-primary);color:#fff;border:none;border-radius:var(--ep-radius-sm);padding:10px 24px;font-weight:700;cursor:pointer;transition:var(--ep-transition)}.ep-sq-submit-btn:hover:not(:disabled) {background:#3730a3;transform:translateY(-1px)}.ep-sq-submit-btn:disabled{opacity:.5;cursor:not-allowed}.ep-sq-hint{font-size:.78rem;color:var(--ep-text-muted)}.ep-decision-block{padding:0 16px 16px}.ep-decision{display:flex;align-items:center;gap:14px;padding:16px;border-radius:var(--ep-radius-sm)}.ep-decision--correct{background:#dcfce7;border-left:4px solid var(--ep-success)}.ep-decision--wrong{background:#fee2e2;border-left:4px solid var(--ep-danger)}.ep-decision__icon{font-size:2rem;flex-shrink:0}.ep-decision__verdict{font-weight:800;font-size:1rem;margin-bottom:4px}.ep-decision--correct .ep-decision__verdict{color:#15803d}.ep-decision--wrong .ep-decision__verdict{color:#b91c1c}.ep-decision__correct{font-size:.85rem;color:#374151}.ep-explanation-block{padding:0 16px 16px}.ep-expl-header{font-weight:700;font-size:.85rem;margin-bottom:8px;display:flex;align-items:center}.ep-expl-body{font-size:.875rem;line-height:1.7;color:#374151;background:#fffbeb;border-left:4px solid var(--ep-accent);padding:12px 14px;border-radius:0 8px 8px 0}.ep-sq-nav{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:20px;flex-wrap:wrap}.ep-sq-nav__btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);font-size:.85rem;font-weight:600;color:var(--ep-text-dark);transition:var(--ep-transition)}.ep-sq-nav__btn:hover{background:var(--ep-primary);color:#fff;border-color:var(--ep-primary)}.ep-sq-nav__btn--topic{background:#f1f5f9}.ep-answer-status{display:flex;align-items:flex-start;gap:12px;padding:12px;border-radius:var(--ep-radius-sm)}.ep-answer-status--correct{background:#dcfce7}.ep-answer-status--wrong{background:#fee2e2}.ep-answer-status__icon{font-size:1.6rem;flex-shrink:0}.ep-answer-status__label{font-size:.72rem;color:var(--ep-text-muted);text-transform:uppercase;margin-bottom:2px}.ep-answer-status__val{font-size:.875rem;font-weight:600;color:var(--ep-text-dark)}.ep-stats-mini{display:flex;gap:16px;flex-wrap:wrap}.ep-stats-mini div{text-align:center}.ep-stats-mini span{display:block;font-size:1.2rem;font-weight:800}.ep-stats-mini small{font-size:.7rem;color:var(--ep-text-muted)}.ep-sidebar-item__num{width:40px;font-size:.72rem;color:var(--ep-text-muted);flex-shrink:0}.ep-sidebar-item__text{flex:1;font-size:.82rem}.ep-discussion-block{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);border:1.5px solid var(--ep-border);overflow:hidden}.ep-discussion__header{padding:16px 20px;border-bottom:1px solid var(--ep-border)}.ep-discussion__title{font-size:1rem;font-weight:700;margin:0;display:flex;align-items:center;gap:8px}.ep-discussion__count{background:var(--ep-primary);color:#fff;border-radius:12px;padding:2px 10px;font-size:.75rem}.ep-discussion__list{padding:16px 20px;display:flex;flex-direction:column;gap:16px}.ep-discussion__empty{text-align:center;padding:32px 20px;color:var(--ep-text-muted)}.ep-discussion__empty i{font-size:2.5rem;display:block;margin-bottom:8px;opacity:.4}.ep-comment{display:flex;gap:12px}.ep-comment--reply{margin-left:40px;margin-top:10px}.ep-comment__avatar{width:36px;height:36px;border-radius:50%;background:var(--ep-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem;flex-shrink:0}.ep-comment__avatar--sm{width:28px;height:28px;font-size:.7rem}.ep-comment__body{flex:1}.ep-comment__meta{display:flex;align-items:center;gap:8px;margin-bottom:4px;flex-wrap:wrap}.ep-comment__name{font-weight:700;font-size:.85rem}.ep-comment__time{font-size:.72rem;color:var(--ep-text-muted)}.ep-comment__text{font-size:.875rem;line-height:1.6;color:#374151}.ep-comment__actions{display:flex;gap:8px;margin-top:6px}.ep-comment-reply-btn,.ep-comment-flag-btn{background:none;border:none;cursor:pointer;font-size:.75rem;color:var(--ep-text-muted);padding:2px 6px;border-radius:4px;transition:var(--ep-transition)}.ep-comment-reply-btn:hover{color:var(--ep-primary);background:#eef2ff}.ep-comment-flag-btn:hover{color:var(--ep-danger);background:#fee2e2}.ep-comment__replies{margin-top:12px;display:flex;flex-direction:column;gap:10px}.ep-reply-form{margin-top:10px;background:#f8fafc;border-radius:var(--ep-radius-sm);padding:12px}.ep-reply-input{width:100%;padding:8px 10px;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);font-size:.85rem;resize:vertical;outline:none}.ep-reply-input:focus{border-color:var(--ep-primary)}.ep-reply-actions{display:flex;gap:8px;margin-top:8px}.ep-reply-submit-btn{background:var(--ep-primary);color:#fff;border:none;padding:6px 14px;border-radius:6px;font-size:.8rem;font-weight:600;cursor:pointer}.ep-reply-cancel-btn{background:none;border:1px solid var(--ep-border);color:var(--ep-text-muted);padding:6px 10px;border-radius:6px;font-size:.8rem;cursor:pointer}.ep-discussion__form{display:flex;gap:12px;padding:16px 20px;border-top:1px solid var(--ep-border);background:#f8fafc}.ep-discussion__form-inner{flex:1}.ep-discussion-textarea{width:100%;padding:10px 12px;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);font-size:.875rem;resize:vertical;outline:none;font-family:var(--ep-font-body)}.ep-discussion-textarea:focus{border-color:var(--ep-primary)}.ep-discussion__form-actions{display:flex;align-items:center;justify-content:space-between;margin-top:8px}.ep-char-count{font-size:.72rem;color:var(--ep-text-muted)}.ep-post-comment-btn{background:var(--ep-primary);color:#fff;border:none;padding:8px 18px;border-radius:var(--ep-radius-sm);font-weight:700;font-size:.875rem;cursor:pointer;transition:var(--ep-transition)}.ep-post-comment-btn:hover{background:#3730a3}.ep-discussion__login-cta{padding:20px;text-align:center;background:#f8fafc;border-top:1px solid var(--ep-border);font-size:.875rem;color:var(--ep-text-muted)}.ep-discussion-alert{padding:10px 14px;border-radius:var(--ep-radius-sm);font-size:.85rem;font-weight:600;margin-bottom:10px}.ep-da--success{background:#dcfce7;color:#15803d}.ep-da--danger{background:#fee2e2;color:#b91c1c}.ep-da--warning{background:#fef3c7;color:#92400e}.ep-test-steps{display:flex;align-items:center;justify-content:center;gap:0;margin-bottom:32px}.ep-test-step{display:flex;align-items:center;gap:8px;padding:10px 20px;font-size:.875rem;font-weight:600;color:var(--ep-text-muted);border-radius:8px}.ep-test-step span{width:28px;height:28px;border-radius:50%;background:var(--ep-border);color:var(--ep-text-muted);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.8rem}.ep-test-step.active{color:var(--ep-primary)}.ep-test-step.active span{background:var(--ep-primary);color:#fff}.ep-test-step.completed span{background:var(--ep-success);color:#fff}.ep-test-step-line{width:40px;height:2px;background:var(--ep-border)}.ep-test-config-card{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);padding:32px}.ep-test-config__title{font-size:1.4rem;font-weight:800;margin-bottom:4px}.ep-test-config__sub{color:var(--ep-text-muted);margin-bottom:24px}.ep-test-config-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.ep-tc-group{}.ep-tc-group--full{grid-column:1/-1}.ep-tc-label{font-size:.82rem;font-weight:700;color:var(--ep-text-dark);margin-bottom:8px;display:block;text-transform:uppercase;letter-spacing:.5px}.ep-tc-input{width:100%;padding:9px 12px;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);font-size:.875rem;outline:none}.ep-tc-input:focus{border-color:var(--ep-primary)}.ep-exam-pills{display:flex;flex-wrap:wrap;gap:8px}.ep-exam-pill{padding:6px 14px;border:1.5px solid var(--ep-border);border-radius:20px;font-size:.8rem;font-weight:600;cursor:pointer;transition:var(--ep-transition);color:var(--ep-text-muted)}.ep-exam-pill:hover{border-color:var(--ep-primary);color:var(--ep-primary)}.ep-exam-pill.active{background:var(--ep-primary);color:#fff;border-color:var(--ep-primary)}.ep-multiselect{border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);max-height:160px;overflow-y:auto;padding:8px;background:#fff}.ep-ms-placeholder,.ep-ms-loading{color:var(--ep-text-muted);font-size:.82rem;padding:8px;text-align:center}.ep-ms-item{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:6px;cursor:pointer;transition:background .1s}.ep-ms-item:hover{background:#f1f5f9}.ep-ms-check{flex-shrink:0}.ep-ms-item label{font-size:.85rem;cursor:pointer;flex:1}.ep-pill-group{display:flex;flex-wrap:wrap;gap:6px}.ep-pill{padding:6px 14px;border:1.5px solid var(--ep-border);border-radius:20px;font-size:.8rem;font-weight:600;cursor:pointer;transition:var(--ep-transition);color:var(--ep-text-muted)}.ep-pill:hover{border-color:var(--ep-primary);color:var(--ep-primary)}.ep-pill.active{background:var(--ep-primary);color:#fff;border-color:var(--ep-primary)}.ep-mode-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px}.ep-mode-card{border:2px solid var(--ep-border);border-radius:var(--ep-radius-sm);padding:14px;cursor:pointer;transition:var(--ep-transition);text-align:center}.ep-mode-card:hover{border-color:var(--ep-primary)}.ep-mode-card.active{border-color:var(--ep-primary);background:#eef2ff}.ep-mode-card__icon{font-size:1.5rem;margin-bottom:4px}.ep-mode-card__name{font-weight:700;font-size:.875rem}.ep-mode-card__desc{font-size:.72rem;color:var(--ep-text-muted)}.ep-test-error{background:#fee2e2;color:#b91c1c;border-radius:var(--ep-radius-sm);padding:10px 14px;font-size:.85rem;margin-top:12px}.ep-start-test-btn{width:100%;padding:14px;background:var(--ep-primary);color:#fff;border:none;border-radius:var(--ep-radius-sm);font-size:1rem;font-weight:800;cursor:pointer;transition:var(--ep-transition);margin-top:20px;display:flex;align-items:center;justify-content:center}.ep-start-test-btn:hover:not(:disabled) {background:#3730a3;transform:translateY(-2px);box-shadow:0 6px 20px rgba(79,70,229,.35)}.ep-taking-header{display:flex;align-items:center;justify-content:space-between;background:#fff;border-radius:var(--ep-radius);padding:16px 20px;margin-bottom:12px;box-shadow:var(--ep-card-shadow);flex-wrap:wrap;gap:12px}.ep-taking-title{font-size:1rem;font-weight:800}.ep-taking-progress{font-size:.8rem;color:var(--ep-text-muted);margin-top:2px}.ep-taking-header__right{display:flex;align-items:center;gap:16px}.ep-test-timer{display:flex;align-items:center;gap:6px;font-weight:800;font-size:1.1rem;color:var(--ep-primary)}.ep-timer--warning{color:var(--ep-danger)!important;animation:ep-pulse 1s infinite}.ep-test-score-live{text-align:right;font-size:.8rem;color:var(--ep-text-muted)}.ep-test-score-live span{font-size:1.2rem;font-weight:800;color:var(--ep-success)}.ep-test-progress-bar{height:6px;background:#e2e8f0;border-radius:3px;overflow:hidden;margin-bottom:16px}.ep-test-progress-fill{height:100%;background:var(--ep-primary);border-radius:3px;transition:width .4s ease}.ep-tq-card{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);padding:24px;border:1.5px solid var(--ep-border)}.ep-tq-meta{display:flex;align-items:center;gap:8px;margin-bottom:12px}.ep-tq-num{font-size:.72rem;color:var(--ep-text-muted);font-weight:600}.ep-tq-question{font-size:1rem;font-weight:600;line-height:1.65;margin-bottom:16px}.ep-tq-options{display:grid;grid-template-columns:1fr 1fr;gap:8px}@media (max-width:576px){.ep-tq-options{grid-template-columns:1fr}}.ep-tq-option{display:flex;align-items:center;gap:10px;background:#f8fafc;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);padding:10px 12px;cursor:pointer;transition:var(--ep-transition);font-size:.875rem;text-align:left;width:100%}.ep-tq-option:hover:not(:disabled) {background:#eef2ff;border-color:var(--ep-primary);color:var(--ep-primary)}.ep-tq-opt__letter{width:26px;height:26px;border-radius:50%;background:var(--ep-border);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.72rem;flex-shrink:0}.ep-tq-opt--selected{background:#eef2ff!important;border-color:var(--ep-primary)!important}.ep-tq-opt--correct{background:#dcfce7!important;border-color:var(--ep-success)!important;color:#15803d!important;font-weight:600}.ep-tq-opt--wrong{background:#fee2e2!important;border-color:var(--ep-danger)!important;color:#b91c1c!important;font-weight:600}.ep-tq-decision{padding:12px 14px;border-radius:var(--ep-radius-sm);margin-top:12px;font-weight:600;font-size:.875rem}.ep-tq-decision--correct{background:#dcfce7;color:#15803d;border-left:4px solid var(--ep-success)}.ep-tq-decision--wrong{background:#fee2e2;color:#b91c1c;border-left:4px solid var(--ep-danger)}.ep-tq-explanation{font-size:.82rem;color:#78350f;background:#fffbeb;border-left:4px solid var(--ep-accent);padding:10px 12px;border-radius:0 8px 8px 0;margin-top:10px}.ep-test-nav{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px;flex-wrap:wrap}.ep-test-nav-btn{padding:9px 18px;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);font-weight:700;font-size:.875rem;cursor:pointer;background:#fff;transition:var(--ep-transition)}.ep-test-nav-btn:hover:not(:disabled)  {background:var(--ep-primary);color:#fff;border-color:var(--ep-primary)}.ep-test-nav-btn:disabled{opacity:.4;cursor:not-allowed}.ep-test-nav-btn--next{background:var(--ep-primary);color:#fff;border-color:var(--ep-primary)}.ep-q-dots{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;flex:1}.ep-q-dot{width:28px;height:28px;border-radius:50%;background:#f1f5f9;border:2px solid var(--ep-border);display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700;cursor:pointer;transition:var(--ep-transition)}.ep-q-dot.active{border-color:var(--ep-primary);color:var(--ep-primary)}.ep-q-dot.correct{background:var(--ep-success);border-color:var(--ep-success);color:#fff}.ep-q-dot.wrong{background:var(--ep-danger);border-color:var(--ep-danger);color:#fff}.ep-q-dot.answered{border-style:solid}.ep-submit-test-btn{background:var(--ep-primary);color:#fff;border:none;padding:12px 32px;border-radius:var(--ep-radius-sm);font-size:1rem;font-weight:800;cursor:pointer;transition:var(--ep-transition)}.ep-submit-test-btn:hover{background:#3730a3}.ep-submit-test-btn:disabled{opacity:.7}.ep-results-card{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);padding:32px;margin-bottom:24px}.ep-result-summary{display:flex;align-items:center;gap:24px;margin-bottom:24px;flex-wrap:wrap}.ep-result-grade{width:100px;height:100px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;flex-shrink:0}.ep-result-grade__emoji{font-size:2rem;line-height:1}.ep-result-grade__letter{font-size:1.4rem;font-weight:900;line-height:1}.ep-result-main{flex:1}.ep-result-score{font-size:2.5rem;font-weight:900;line-height:1}.ep-result-score span{font-size:1.2rem;color:var(--ep-text-muted)}.ep-result-percent{font-size:1rem;color:var(--ep-text-muted);margin:4px 0}.ep-result-progress{height:10px;background:#e2e8f0;border-radius:5px;overflow:hidden;margin-top:8px}.ep-result-progress__fill{height:100%;border-radius:5px;transition:width .6s ease}.ep-result-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}@media (max-width:576px){.ep-result-stats{grid-template-columns:repeat(2,1fr)}}.ep-result-stat{text-align:center;background:#f8fafc;border-radius:var(--ep-radius-sm);padding:14px}.ep-results-review{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);padding:28px;margin-bottom:20px}.ep-rv-card{border-radius:var(--ep-radius-sm);padding:16px;margin-bottom:10px;border-left:4px solid var(--ep-border);background:#fff;border:1.5px solid var(--ep-border)}.ep-rv-card--correct{border-left-color:var(--ep-success);background:#f0fdf4}.ep-rv-card--wrong{border-left-color:var(--ep-danger);background:#fff5f5}.ep-rv-card--skipped{border-left-color:#9ca3af;background:#f9fafb}.ep-rv-card__header{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}.ep-rv-card__num{font-size:.72rem;font-weight:700;background:#f1f5f9;padding:2px 8px;border-radius:4px}.ep-rv-badge{font-size:.75rem;font-weight:700}.ep-rv-correct{font-size:.78rem;color:var(--ep-success);font-weight:600}.ep-rv-card__question{font-size:.875rem;font-weight:600;color:var(--ep-text-dark);margin-bottom:6px}.ep-rv-explanation{font-size:.78rem;color:#78350f;background:#fffbeb;padding:8px 10px;border-radius:6px}.ep-results-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}.ep-papers-hero{background:linear-gradient(135deg,var(--ep-primary),var(--ep-secondary));color:#fff;padding:40px 0}.ep-papers-hero__title{font-size:1.8rem;font-weight:800;margin-bottom:6px}.ep-papers-hero__sub{opacity:.85;font-size:1rem}.ep-paper-card{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);border:1.5px solid var(--ep-border);overflow:hidden;transition:var(--ep-transition);height:100%}.ep-paper-card:hover{box-shadow:var(--ep-card-hover);transform:translateY(-3px)}.ep-paper-card--locked{}.ep-paper-card__thumb{position:relative;height:120px;background:#f1f5f9;overflow:hidden}.ep-paper-card__thumb img{width:100%;height:100%;object-fit:cover}.ep-paper-card__thumb-placeholder{height:100%;display:flex;align-items:center;justify-content:center;font-size:3rem;color:#94a3b8}.ep-paper-card__lock{position:absolute;top:8px;right:8px;background:rgba(0,0,0,.5);color:#fff;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem}.ep-paper-card__body{padding:14px;display:flex;flex-direction:column;gap:8px}.ep-paper-card__badges{display:flex;flex-wrap:wrap;gap:4px}.ep-paper-badge{font-size:.7rem;font-weight:700;padding:2px 8px;border-radius:4px;background:#f1f5f9;color:var(--ep-text-muted)}.ep-paper-badge--year{background:#e0e7ff;color:#3730a3}.ep-paper-badge--free{background:#dcfce7;color:#15803d}.ep-paper-badge--premium{background:#fef3c7;color:#92400e}.ep-paper-badge--owned{background:#dcfce7;color:#15803d}.ep-paper-card__title{font-size:.9rem;font-weight:700;color:var(--ep-text-dark);line-height:1.4}.ep-paper-card__meta{font-size:.72rem;color:var(--ep-text-muted);display:flex;gap:8px;flex-wrap:wrap}.ep-paper-card__tags{display:flex;flex-wrap:wrap;gap:4px}.ep-tag{font-size:.7rem;background:#f1f5f9;padding:2px 8px;border-radius:10px;color:var(--ep-text-muted)}.ep-paper-card__btn{display:block;text-align:center;background:var(--ep-primary);color:#fff;padding:8px;border-radius:var(--ep-radius-sm);font-size:.8rem;font-weight:700;transition:var(--ep-transition);margin-top:auto}.ep-paper-card__btn:hover{background:#3730a3;color:#fff}.ep-paper-detail-card{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);padding:24px;margin-bottom:16px;border:1.5px solid var(--ep-border)}.ep-paper-detail__badges{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}.ep-paper-detail__title{font-size:1.4rem;font-weight:800;margin-bottom:10px}.ep-paper-detail__meta{display:flex;gap:16px;color:var(--ep-text-muted);font-size:.82rem;flex-wrap:wrap;margin-bottom:8px}.ep-paper-detail__tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}.ep-paper-detail__actions{display:flex;gap:10px;flex-wrap:wrap}.ep-paper-view-btn{background:var(--ep-primary);color:#fff;border:none;padding:10px 20px;border-radius:var(--ep-radius-sm);font-weight:700;cursor:pointer;transition:var(--ep-transition)}.ep-paper-view-btn:hover{background:#3730a3}.ep-paper-download-btn{background:var(--ep-success);color:#fff;padding:10px 20px;border-radius:var(--ep-radius-sm);font-weight:700;display:inline-flex;align-items:center}.ep-paper-download-btn:hover{background:#059669;color:#fff}.ep-paper-unlock-btn{background:var(--ep-accent);color:#0f172a;border:none;padding:10px 20px;border-radius:var(--ep-radius-sm);font-weight:700;cursor:pointer;display:inline-flex;align-items:center}.ep-paper-unlock-btn:hover{background:#e08c00}.ep-paper-share-btn{background:none;border:1.5px solid var(--ep-border);color:var(--ep-text-dark);padding:10px 16px;border-radius:var(--ep-radius-sm);font-weight:600;cursor:pointer;display:inline-flex;align-items:center}.ep-paper-share-btn:hover{border-color:var(--ep-primary);color:var(--ep-primary)}.ep-pdf-viewer-wrap{background:#f1f5f9;border-radius:var(--ep-radius);overflow:hidden;margin-bottom:16px}.ep-pdf-toolbar{background:#1e293b;color:#fff;display:flex;align-items:center;gap:8px;padding:8px 12px;font-size:.82rem;flex-wrap:wrap}.ep-pdf-toolbar button{background:rgba(255,255,255,.1);border:none;color:#fff;width:30px;height:30px;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}.ep-pdf-toolbar button:hover{background:rgba(255,255,255,.25)}.ep-pdf-canvas-wrap{background:#64748b;padding:16px;min-height:400px;display:flex;align-items:flex-start;justify-content:center;overflow:auto}.ep-pdf-canvas{box-shadow:0 4px 20px rgba(0,0,0,.3);display:block;max-width:100%}.ep-pdf-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;padding:40px}.ep-paywall-block{background:linear-gradient(135deg,#f8fafc,#eef2ff);border:2px dashed var(--ep-primary);border-radius:var(--ep-radius);padding:40px;text-align:center;margin-bottom:16px}.ep-paywall-block__icon{font-size:3rem;margin-bottom:12px}.ep-paper-content{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);padding:24px;margin-bottom:16px}.ep-paper-content h2{font-size:1.1rem;font-weight:700;margin-bottom:14px}.ep-submit-header{display:flex;align-items:flex-start;gap:16px;margin-bottom:24px;background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);padding:24px}.ep-submit-header__icon{font-size:2.5rem;flex-shrink:0}.ep-submit-header__title{font-size:1.4rem;font-weight:800;margin-bottom:4px}.ep-submit-header__sub{font-size:.875rem;color:var(--ep-text-muted)}.ep-submit-card{background:#fff;border-radius:var(--ep-radius);box-shadow:var(--ep-card-shadow);padding:28px}.ep-submit-alert{padding:12px 16px;border-radius:var(--ep-radius-sm);font-size:.875rem;font-weight:600;margin-bottom:16px}.ep-submit-alert--success{background:#dcfce7;color:#15803d}.ep-submit-alert--danger{background:#fee2e2;color:#b91c1c}.ep-sq-form-group{margin-bottom:16px}.ep-sq-form-group--full{grid-column:1/-1}.ep-sq-form-label{display:flex;align-items:center;justify-content:space-between;font-size:.82rem;font-weight:600;color:var(--ep-text-dark);margin-bottom:5px}.ep-sq-char-count{font-size:.72rem;color:var(--ep-text-muted);font-weight:400}.ep-sq-input{width:100%;padding:9px 12px;border:1.5px solid var(--ep-border);border-radius:var(--ep-radius-sm);font-size:.875rem;color:var(--ep-text-dark);outline:none;font-family:var(--ep-font-body);transition:border-color .15s}.ep-sq-input:focus{border-color:var(--ep-primary)}.ep-sq-textarea{resize:vertical;min-height:80px}.ep-sq-options-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:16px}@media (max-width:576px){.ep-sq-options-grid{grid-template-columns:1fr}}.ep-sq-opt-badge{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;font-weight:800;font-size:.75rem;color:#fff;flex-shrink:0}.ep-sq-opt-badge--a{background:#4f46e5}.ep-sq-opt-badge--b{background:#0ea5e9}.ep-sq-opt-badge--c{background:#10b981}.ep-sq-opt-badge--d{background:#f59e0b}.ep-sq-form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:16px}.ep-correct-picker{display:flex;gap:8px}.ep-correct-opt{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:2px solid var(--ep-border);border-radius:10px;cursor:pointer;font-weight:800;font-size:.9rem;transition:var(--ep-transition)}.ep-correct-opt:hover,.ep-correct-opt.active{border-color:var(--ep-success);background:#dcfce7;color:#15803d}.ep-correct-opt input{display:none}.ep-sq-preview-wrap{border:2px dashed var(--ep-border);border-radius:var(--ep-radius);padding:16px;background:#f8fafc;margin-bottom:16px}.ep-sq-preview-title{font-size:.78rem;font-weight:700;color:var(--ep-text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}.ep-preview-question{font-size:.9rem;font-weight:600;margin-bottom:12px}.ep-preview-options{display:grid;grid-template-columns:1fr 1fr;gap:6px}.ep-preview-opt{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:6px;border:1.5px solid var(--ep-border);font-size:.8rem;background:#fff}.ep-preview-opt--correct{border-color:var(--ep-success);background:#dcfce7}.ep-preview-opt__letter{width:22px;height:22px;border-radius:50%;background:var(--ep-border);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.72rem}.ep-sq-form-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding-top:16px;border-top:1px solid var(--ep-border)}.ep-sq-preview-btn{background:none;border:1.5px solid var(--ep-border);color:var(--ep-text-dark);padding:10px 18px;border-radius:var(--ep-radius-sm);font-weight:600;cursor:pointer;transition:var(--ep-transition);display:flex;align-items:center}.ep-sq-preview-btn:hover{border-color:var(--ep-primary);color:var(--ep-primary)}.ep-sq-submit-btn{background:var(--ep-primary);color:#fff;border:none;padding:10px 24px;border-radius:var(--ep-radius-sm);font-weight:700;cursor:pointer;transition:var(--ep-transition);display:flex;align-items:center}.ep-sq-submit-btn:hover:not(:disabled) {background:#3730a3}.ep-sq-submit-btn:disabled{opacity:.7;cursor:not-allowed}.ep-submit-guidelines{background:#fffbeb;border:1.5px solid #fbbf24;border-radius:var(--ep-radius);padding:20px 24px;margin-top:20px}.ep-submit-guidelines h4{font-size:.9rem;font-weight:700;margin-bottom:10px}.ep-submit-guidelines ul{padding-left:18px;font-size:.82rem;color:#374151;display:flex;flex-direction:column;gap:4px}.ep-status-tabs{display:flex;gap:4px;margin-bottom:20px;flex-wrap:wrap}.ep-status-tab{padding:8px 16px;border-radius:8px;font-size:.85rem;font-weight:600;color:var(--ep-text-muted);text-decoration:none;transition:background .15s;border:1.5px solid var(--ep-a-border);background:#fff}.ep-status-tab:hover,.ep-status-tab.active{background:var(--ep-a-primary);color:#fff;border-color:var(--ep-a-primary)}.ep-tab-count{display:inline-block;background:rgba(255,255,255,.25);border-radius:10px;padding:0 7px;font-size:.72rem;margin-left:4px}.ep-status-tab:not(.active) .ep-tab-count {background:#e5e7eb;color:#374151}.ep-submission-card{background:#fff;border-radius:var(--ep-a-radius);padding:20px;box-shadow:0 1px 4px rgba(0,0,0,.07);margin-bottom:12px;border:1.5px solid #e5e7eb}.ep-submission-card__header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px;flex-wrap:wrap;gap:8px}.ep-sub-user{font-weight:700;font-size:.875rem;margin-right:8px}.ep-sub-time{font-size:.75rem;color:#6b7280}.ep-sub-question{font-size:.9rem;font-weight:600;color:#111827;line-height:1.55;margin-bottom:10px}.ep-sub-opts{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:8px}.ep-sub-opt{font-size:.8rem;padding:6px 10px;border-radius:6px;border:1px solid #e5e7eb;background:#f9fafb}.ep-sub-opt--correct{border-color:#10b981;background:#d1fae5;font-weight:700}.ep-sub-expl{font-size:.78rem;color:#6b7280;font-style:italic;border-top:1px solid #f3f4f6;padding-top:8px;margin-top:4px}.ep-sub-actions{display:flex;gap:6px;flex-wrap:wrap}.ep-btn-sm{padding:5px 12px;font-size:.78rem}.ep-mcq-test-cta{margin-top:12px;padding-top:12px;border-top:1px solid var(--ep-border)}.ep-test-link-btn{display:inline-flex;align-items:center;background:var(--ep-accent);color:#0f172a;padding:8px 18px;border-radius:var(--ep-radius-sm);font-size:.82rem;font-weight:700;transition:var(--ep-transition)}.ep-test-link-btn:hover{background:#e08c00;color:#0f172a;transform:translateY(-1px)}.ep-quick-strip{padding:40px 0;background:var(--ep-bg-light);border-top:1px solid var(--ep-border)}.ep-quick-strip__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.ep-qs-card{display:flex;align-items:center;gap:14px;background:#fff;border-radius:var(--ep-radius);padding:18px 20px;text-decoration:none;color:var(--ep-text-dark);border:1.5px solid var(--ep-border);transition:var(--ep-transition)}.ep-qs-card:hover{transform:translateY(-2px);box-shadow:var(--ep-card-hover);color:var(--ep-text-dark)}.ep-qs-card__icon{font-size:1.8rem;width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:10px;flex-shrink:0}.ep-qs-card--test .ep-qs-card__icon{background:#eef2ff}.ep-qs-card--papers .ep-qs-card__icon{background:#fff7ed}.ep-qs-card--submit .ep-qs-card__icon{background:#f0fdf4}.ep-qs-card--bookmarks .ep-qs-card__icon{background:#fffbeb}.ep-qs-card:hover.ep-qs-card--test{border-color:var(--ep-primary)}.ep-qs-card:hover.ep-qs-card--papers{border-color:#f97316}.ep-qs-card:hover.ep-qs-card--submit{border-color:var(--ep-success)}.ep-qs-card:hover.ep-qs-card--bookmarks{border-color:var(--ep-accent)}.ep-qs-card__text strong{display:block;font-size:.9rem;font-weight:700;margin-bottom:2px}.ep-qs-card__text span{font-size:.75rem;color:var(--ep-text-muted)}.ep-bc-wrap{padding:4px 0}