*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f6f7fb;color:#172033;font-family:Inter,Arial,sans-serif}.header{height:72px;background:#fff;border-bottom:1px solid #e7e9ef;display:flex;align-items:center;padding:0 5%;gap:28px;position:sticky;top:0;z-index:10}.logo{font-size:23px;font-weight:900;color:#172033;text-decoration:none}.logo:before{content:"Q";display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:#ff6b00;color:white;margin-right:9px;font-size:17px}.nav{display:flex;gap:4px;flex:1;overflow:auto}.nav a{padding:10px 13px;border-radius:10px;color:#657084;text-decoration:none;font-weight:650;white-space:nowrap}.nav a:hover,.nav a.active{background:#fff0e6;color:#e85f00;font-weight:850}.auth{display:flex;gap:8px;white-space:nowrap}.login,.signup{padding:10px 14px;border-radius:10px;text-decoration:none;font-weight:800}.login{color:#e85f00}.signup{background:#ff6b00;color:#fff}.hero{max-width:1180px;margin:42px auto;padding:60px;border-radius:28px;background:#fff;border:1px solid #e7eaf0;display:grid;grid-template-columns:1.1fr .9fr;gap:55px;align-items:center;box-shadow:0 18px 55px rgba(20,30,50,.07)}.eyebrow{font-size:11px;letter-spacing:1.8px;font-weight:900;color:#ff6b00;margin-bottom:13px}.hero h1{font-size:58px;line-height:1.04;letter-spacing:-2.5px;margin:0 0 20px}.hero h1 span{color:#ff6b00}.hero p{font-size:18px;color:#687386;line-height:1.7;max-width:620px}.actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}.button{display:inline-block;padding:13px 18px;border-radius:11px;text-decoration:none;font-weight:850}.primary{background:#ff6b00;color:#fff}.light{background:#f0f2f6;color:#253044}.hero-panel{background:#171d2b;color:#fff;border-radius:23px;padding:28px;min-height:310px}.panel-head{display:flex;justify-content:space-between;color:#aeb8ca;font-size:11px;letter-spacing:1px}.panel-head span{color:#67e29a}.panel-number{font-size:72px;font-weight:900;margin-top:45px;line-height:1}.panel-text{color:#aab3c2;margin-top:7px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:48px}.stats div{border:1px solid #3b4353;border-radius:11px;padding:12px}.stats b{display:block;font-size:17px}.stats small{color:#aab3c2}.section{max-width:1180px;margin:0 auto 65px}.section-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:20px}.section-title h2{margin:0;font-size:30px}.section-title>span{color:#858d9d;font-size:13px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.cards article{background:#fff;border:1px solid #e7e9ef;border-radius:18px;padding:24px;min-height:215px}.icon{width:44px;height:44px;border-radius:12px;background:#fff0e6;color:#ff6b00;display:grid;place-items:center;font-weight:900}.cards h3{margin:16px 0 8px}.cards p{color:#6c7586;line-height:1.6}.cards a{color:#e85f00;font-weight:800;text-decoration:none}.cards a.button.primary{color:#fff!important}footer{text-align:center;padding:30px;color:#8a92a0;font-size:13px}@media(max-width:900px){.header{padding:0 16px;gap:12px}.auth{display:none}.hero{margin:20px 14px;padding:30px;grid-template-columns:1fr}.hero h1{font-size:43px}.section{margin:0 14px 45px}.cards{grid-template-columns:1fr}.nav{order:3;position:absolute;top:72px;left:0;right:0;background:#fff;padding:8px 12px;border-bottom:1px solid #e7e9ef}.header{height:72px}.hero{margin-top:75px}}

.account-wrap{min-height:calc(100vh - 72px);display:grid;place-items:center;padding:40px 16px;background:#f6f7fb}.account-card{width:min(650px,100%);background:#fff;border:1px solid #e7e9ef;border-radius:24px;padding:38px;box-shadow:0 18px 55px rgba(20,30,50,.08)}.account-card h1{margin:0 0 8px;font-size:34px}.muted{color:#70798a;line-height:1.6;margin:0 0 28px}.account-card form{display:grid;gap:16px}.account-card label{font-weight:750;font-size:14px;color:#263044}.account-card input,.account-card select{display:block;width:100%;margin-top:7px;border:1px solid #dfe3ea;border-radius:11px;padding:13px 14px;font:inherit;background:#fff;color:#1c2535;outline:none}.account-card input:focus,.account-card select:focus{border-color:#ff6b00;box-shadow:0 0 0 3px rgba(255,107,0,.10)}.account-card select:disabled{background:#f3f4f7;color:#394255;font-weight:750}.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}.check{display:flex!important;gap:9px;align-items:center;font-weight:600!important}.check input{width:16px;margin:0}.button.full{width:100%;border:0;font-size:15px}.message{min-height:20px;font-size:14px;font-weight:700}.message.success{color:#138a4b}.message.error{color:#d33d35}.already{text-align:center;color:#737c8d}.already a{color:#e85f00;font-weight:800;text-decoration:none}@media(max-width:650px){.account-card{padding:25px}.two{grid-template-columns:1fr}}

.profile-page{max-width:1180px;margin:0 auto;padding:42px 20px 70px}.profile-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px}.profile-head h1{margin:0 0 6px;font-size:38px}.avatar{width:72px;height:72px;border-radius:22px;background:#ff6b00;color:#fff;display:grid;place-items:center;font-size:28px;font-weight:900;box-shadow:0 12px 30px rgba(255,107,0,.2)}.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.profile-card{background:#fff;border:1px solid #e7e9ef;border-radius:20px;padding:26px;box-shadow:0 14px 40px rgba(20,30,50,.05)}.card-title{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:22px}.card-title h2{margin:0 0 5px;font-size:21px}.card-title p{margin:0;color:#7a8392;font-size:13px;line-height:1.5}.profile-card form{display:grid;gap:15px}.profile-card label{font-weight:750;font-size:14px}.profile-card input,.profile-card select{display:block;width:100%;margin-top:7px;border:1px solid #dfe3ea;border-radius:11px;padding:12px 13px;font:inherit;background:#fff;color:#1c2535;outline:none}.profile-card input:focus,.profile-card select:focus{border-color:#ff6b00;box-shadow:0 0 0 3px rgba(255,107,0,.1)}.profile-card input:disabled{background:#f3f4f7;color:#596273}.sessions-card{margin-top:18px}.sessions{display:grid;gap:10px}.session{display:flex;align-items:center;gap:13px;border:1px solid #e8ebf0;border-radius:14px;padding:14px}.device-icon{width:42px;height:42px;border-radius:12px;background:#fff0e6;color:#ff6b00;display:grid;place-items:center;font-weight:900}.session-main{display:grid;gap:3px;min-width:0;flex:1}.session-main b{font-size:14px}.session-main span,.session-main small{color:#737d8e;font-size:12px}.session-right{white-space:nowrap}.current-badge{display:inline-block;padding:7px 10px;border-radius:9px;background:#eaf8f0;color:#16844a;font-size:12px;font-weight:800}.revoke,.danger-outline{border:1px solid #e8b8b5;background:#fff;color:#c23b35;padding:9px 12px;border-radius:10px;font-weight:800;cursor:pointer}.revoke:hover,.danger-outline:hover{background:#fff0ef}.nav-btn{border:0;background:transparent;cursor:pointer;font:inherit}.session-empty{padding:18px;border:1px dashed #dfe3ea;border-radius:12px;color:#7b8492;text-align:center}.profile-card .button{cursor:pointer;border:0}.profile-page .muted{margin-bottom:0}.profile-card .two{grid-template-columns:1fr 1fr}
@media(max-width:800px){.profile-grid{grid-template-columns:1fr}.profile-head{align-items:flex-start}.profile-head h1{font-size:32px}.sessions-card .card-title{flex-direction:column}.session{align-items:flex-start}.session-right{margin-left:auto}.avatar{width:58px;height:58px;border-radius:18px;font-size:22px}}
@media(max-width:560px){.profile-page{padding:28px 14px 50px}.profile-card{padding:20px}.profile-card .two{grid-template-columns:1fr}.session{display:grid;grid-template-columns:auto 1fr}.session-right{grid-column:2;margin-left:0}.session-right button{width:100%}.header .nav{display:none}.header .auth{display:flex;margin-left:auto}}

.info-section{margin-top:8px}.feature-card{background:#fff;border:1px solid #e7e9ef;border-radius:18px;padding:24px;display:flex;align-items:center;gap:18px;box-shadow:0 10px 30px rgba(20,30,50,.04)}.feature-card h3{margin:0 0 6px}.feature-card p{margin:0;color:#6c7586;line-height:1.6}.feature-card .button{margin-left:auto}.feature-icon{width:48px;height:48px;border-radius:13px;background:#fff0e6;color:#ff6b00;display:grid;place-items:center;font-weight:900;font-size:20px}.performance-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.metric{background:#fff;border:1px solid #e7e9ef;border-radius:18px;padding:23px;display:grid;gap:7px}.metric small{color:#7c8492;font-weight:700}.metric strong{font-size:34px}.metric span{font-size:12px;color:#9097a4}.series-link{display:inline-block;margin-top:4px}.nav a{transition:background .18s,color .18s,box-shadow .18s}.nav a.active{box-shadow:inset 0 0 0 1px rgba(255,107,0,.08)}.auth .signup:hover,.button.primary:hover{filter:brightness(.95)}.button.light:hover{background:#e7eaf0}
@media(max-width:800px){.feature-card{align-items:flex-start;flex-wrap:wrap}.feature-card .button{margin-left:66px}.performance-grid{grid-template-columns:1fr}}
.quiz-option{display:flex!important;align-items:flex-start;gap:12px;padding:15px;border:1px solid #e3e7ee;border-radius:12px;margin:10px 0;cursor:pointer;background:#fff}.quiz-option:hover{border-color:#ff6b00;background:#fffaf6}.quiz-option input{width:auto!important;margin:2px 0!important}.option-list{margin-top:20px}.admin-wrap{max-width:1250px;margin:0 auto;padding:38px 20px 70px}.admin-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:25px 0}.admin-tabs button{border:1px solid #d7dce5;background:#fff;padding:11px 15px;border-radius:10px;font-weight:800;cursor:pointer}.admin-tabs button.active,.admin-tabs button:hover{background:#fff0e6;color:#e85f00;border-color:#ffb17c}.admin-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}.admin-stat{background:#fff;border:1px solid #e7e9ef;border-radius:16px;padding:20px}.admin-stat small{display:block;color:#7b8492;font-weight:700}.admin-stat strong{font-size:32px;display:block;margin-top:8px}.admin-card{background:#fff;border:1px solid #e7e9ef;border-radius:18px;padding:22px;margin-bottom:18px;overflow:auto}.admin-card h2{margin-top:0}.admin-form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.admin-form label{font-size:13px;font-weight:800}.admin-form input,.admin-form select,.admin-form textarea{width:100%;margin-top:6px;padding:11px 12px;border:1px solid #dfe3ea;border-radius:10px;font:inherit}.admin-form textarea{min-height:90px;resize:vertical}.admin-form .full{grid-column:1/-1}.admin-table{width:100%;border-collapse:collapse;min-width:760px}.admin-table th,.admin-table td{padding:11px 10px;border-bottom:1px solid #edf0f4;text-align:left;font-size:13px;vertical-align:top}.admin-table th{color:#667083;font-size:12px;text-transform:uppercase;letter-spacing:.5px}.admin-table button{border:1px solid #dfe3ea;background:#fff;padding:7px 9px;border-radius:8px;font-weight:750;cursor:pointer}.admin-table button:hover{border-color:#ff6b00;color:#e85f00}.admin-badge{display:inline-block;padding:5px 8px;border-radius:8px;background:#eaf8f0;color:#16844a;font-weight:800;font-size:11px}.admin-badge.off{background:#f1f2f5;color:#727a88}.sub-row{margin-top:8px;padding:8px 0;border-top:1px dashed #e4e7ed}.sub-row form{display:flex;gap:8px;margin-top:8px}.sub-row input{padding:8px;border:1px solid #dfe3ea;border-radius:8px}.device-list{display:grid;gap:7px}.device-item{padding:9px;border:1px solid #edf0f4;border-radius:9px}.checkline{display:flex;gap:9px;align-items:center;font-weight:700}.checkline input{width:auto!important;margin:0!important}.admin-login{min-height:calc(100vh - 72px);display:grid;place-items:center;padding:30px}.admin-login .account-card{width:min(480px,100%)}
@media(max-width:900px){.admin-grid{grid-template-columns:repeat(2,1fr)}.admin-form{grid-template-columns:1fr}}
@media(max-width:560px){.admin-grid{grid-template-columns:1fr}.admin-wrap{padding:25px 14px 50px}}

.admin-hero-card{background:linear-gradient(135deg,#fff7ef,#fff);border:1px solid #f0d8c4;border-radius:22px;padding:28px;display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:18px}.admin-hero-card h1{margin:4px 0 8px;font-size:32px}.admin-hero-card p{margin:0;color:#6f7886}.admin-live{white-space:nowrap;font-weight:800;color:#16844a;background:#eaf8f0;border:1px solid #ccebd9;padding:10px 13px;border-radius:999px}.admin-live span{display:inline-block;width:8px;height:8px;background:#16844a;border-radius:50%;margin-right:7px}.admin-kpis{grid-template-columns:repeat(4,1fr)}.admin-stat span{display:block;color:#8a93a1;font-size:11px;margin-top:5px}.admin-quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.admin-quick-grid button{text-align:left;background:#fff;border:1px solid #e3e7ee;border-radius:14px;padding:16px;cursor:pointer;transition:.15s}.admin-quick-grid button:hover{border-color:#ffb17c;background:#fffaf6;transform:translateY(-1px)}.admin-quick-grid b{display:block;font-size:14px}.admin-quick-grid span{display:block;color:#7b8492;font-size:12px;margin-top:6px}.admin-two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.control-list{display:grid;gap:0}.control-list div{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid #edf0f4}.control-list div:last-child{border-bottom:0}.control-list b{color:#16844a;font-size:12px}
@media(max-width:900px){.admin-kpis{grid-template-columns:repeat(2,1fr)}.admin-quick-grid{grid-template-columns:repeat(2,1fr)}.admin-two-col{grid-template-columns:1fr}}
@media(max-width:560px){.admin-kpis{grid-template-columns:1fr}.admin-quick-grid{grid-template-columns:1fr}.admin-hero-card{padding:20px;display:block}.admin-live{display:inline-block;margin-top:15px}.admin-hero-card h1{font-size:26px}}
.admin-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px}.admin-toolbar input{max-width:340px}.admin-modal{position:fixed;inset:0;background:rgba(0,0,0,.48);display:flex;align-items:center;justify-content:center;padding:20px;z-index:1000}.admin-modal-box{background:#fff;border-radius:18px;max-width:850px;width:100%;max-height:90vh;overflow:auto;padding:24px;box-shadow:0 20px 70px rgba(0,0,0,.2)}.admin-modal-box h2{margin-top:0}.admin-table button,.sub-row button,.admin-badge button{cursor:pointer}.admin-badge button{border:0;background:transparent;font:inherit;padding:0 3px}.device-list{min-width:220px}.device-item{border:1px solid #eee;border-radius:10px;padding:10px;margin:6px 0}.admin-card .admin-card{background:#fafafa}@media(max-width:800px){.admin-toolbar{align-items:stretch;flex-direction:column}.admin-toolbar input{max-width:none}.admin-table{display:block;overflow-x:auto;white-space:nowrap}.admin-modal-box{padding:18px}}
.site-notice{margin:18px auto 0;max-width:1180px;padding:0;border-radius:14px;background:#fff3e8;border:1px solid #ffd4ad;color:#6b3b12;font-size:14px;line-height:1.55;overflow:hidden}.site-notice[hidden]{display:none}.announcement-marquee{overflow:hidden;white-space:nowrap;padding:12px 0}.announcement-track{display:inline-flex;min-width:max-content;animation:qn-marquee 18s linear infinite}.announcement-track span{padding-right:90px}.announcement-static{padding:12px 18px}.announcement-html{display:block;width:100%;min-height:44px;padding:0;overflow:hidden;box-sizing:border-box}.announcement-html>*{max-width:100%;box-sizing:border-box}.announcement-html marquee{display:block;width:100%;min-height:44px;line-height:44px;white-space:nowrap}.announcement-html img{max-width:100%;height:auto}.announcement-html a{word-break:break-word}@media(max-width:700px){.site-notice{margin:12px 10px 0;max-width:none;width:calc(100% - 20px);font-size:14px}.announcement-html{min-height:46px}.announcement-html marquee{min-height:46px;line-height:46px;width:100%}.announcement-html table{display:block;max-width:100%;overflow-x:auto}.announcement-html pre{max-width:100%;overflow-x:auto;white-space:pre-wrap;word-break:break-word}}@keyframes qn-marquee{from{transform:translateX(100%)}to{transform:translateX(-100%)}}.site-notice:hover .announcement-track{animation-play-state:paused}.notification-admin-list{display:grid;gap:12px}.notification-admin{display:flex;justify-content:space-between;gap:16px;padding:16px;border:1px solid #eee;border-radius:14px;background:#fff}.notification-admin p{margin:6px 0;color:#666}.notification-admin small{color:#888}@media(max-width:700px){.notification-admin{flex-direction:column}.site-notice{margin:12px 14px 0}}
.dashboard-card{margin-bottom:24px}.dashboard-mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}.dashboard-columns{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:26px}.dashboard-columns h3{margin:0 0 12px;font-size:16px}.trend-row,.category-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid #eee}.trend-row i{grid-column:1/-1;height:7px;background:#eee;border-radius:10px;overflow:hidden}.trend-row em{display:block;height:100%;background:#f27b38;border-radius:10px}.category-row b{font-size:14px}.pill-list{display:flex;flex-wrap:wrap;gap:8px}.perf-pill{padding:8px 10px;border-radius:999px;background:#fff4ed;color:#9b4b18;font-size:13px;font-weight:700}.button.ghost{background:#fff;border:1px solid #ddd;color:#333}@media(max-width:800px){.dashboard-mini-grid{grid-template-columns:repeat(2,1fr)}.dashboard-columns{grid-template-columns:1fr}} 
.quiz-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}.quiz-palette{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 18px}.qnum{width:36px;height:36px;border:1px solid #ddd;border-radius:9px;background:#fff;cursor:pointer;font-weight:700}.qnum.answered{background:#eaf7ee}.qnum.review{outline:2px solid #f59e0b}.qnum.current{border:2px solid #f97316}.quiz-toolbar .button{white-space:nowrap}@media(max-width:600px){.quiz-toolbar{align-items:flex-start;flex-direction:column}.qnum{width:34px;height:34px}}

.practice-option{min-height:52px}.message{margin-top:12px}.message.success{color:#16844a}.message.error{color:#c0392b}

.study-progress{height:10px;background:#eee;border-radius:999px;overflow:hidden}.study-progress span{display:block;height:100%;background:#ff7a00}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:22px 0}.card{background:#fff;border:1px solid #eee;border-radius:18px;padding:22px;box-shadow:0 8px 30px rgba(0,0,0,.05)}.dark{background:#171717;color:#fff;border-radius:22px;padding:34px;margin-top:24px}.dark p{color:#ddd}.search-row{display:flex;gap:10px}.search-row input{flex:1;padding:13px;border:1px solid #ddd;border-radius:10px}.list-row{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid #eee}.table-scroll{overflow:auto}@media(max-width:800px){.grid-3{grid-template-columns:1fr}.site-header nav{gap:10px}.dark{padding:24px}}
/* V45 final Test Series category UI: compact high-contrast filters */
.category-filters{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 24px;align-items:center}
.category-filter{appearance:none;border:1px solid #e0e4eb;background:#fff;color:#e85f00;border-radius:12px;padding:10px 16px;font:inherit;font-size:14px;font-weight:800;line-height:1.2;cursor:pointer;transition:.16s ease;box-shadow:none;min-height:42px}
.category-filter:hover{border-color:#ff9a57;background:#fff7f1;color:#d95700}
.category-filter.active{background:#ff6b00;color:#fff;border-color:#ff6b00;box-shadow:0 6px 16px rgba(255,107,0,.16)}
.test-cards{align-items:start}
.test-cards article{min-height:0}
@media(max-width:700px){.category-filters{flex-wrap:nowrap;overflow-x:auto;padding:2px 2px 8px;margin-top:18px;-webkit-overflow-scrolling:touch}.category-filter{flex:0 0 auto}.test-cards{grid-template-columns:1fr}.profile-page.test-series-page{padding-top:28px}}

/* V45 stable navigation: only the four primary links are exposed in the header. */
@media (max-width: 760px){
  .header{position:sticky;top:0;z-index:1000;display:flex;align-items:center;min-height:68px;padding:12px 16px;gap:12px;overflow:visible}
  .header .logo{flex:0 0 auto}
  .header .nav{display:flex!important;position:absolute;left:16px;right:16px;top:calc(100% + 8px);background:#fff;border:1px solid #e7e9ef;border-radius:16px;box-shadow:0 16px 40px rgba(20,30,50,.12);padding:8px;flex-direction:column;gap:4px;z-index:1200;max-height:0;opacity:0;visibility:hidden;overflow:hidden;transform:translateY(-6px);transition:max-height .2s ease,opacity .2s ease,transform .2s ease,visibility .2s}
  .header.nav-open .nav{max-height:280px;opacity:1;visibility:visible;transform:translateY(0)}
  .header .nav a{display:block;padding:12px 14px;border-radius:10px;text-decoration:none}
  .header .nav a:hover,.header .nav a.active{background:#fff0e6;color:#ff6b00}
  .mobile-menu-toggle{display:grid!important;place-items:center;width:44px;height:44px;flex:0 0 44px;border:1px solid #e7e9ef;border-radius:12px;background:#fff;color:#1c2535;font-size:22px;font-weight:900;cursor:pointer;order:-1}
  .header .auth{margin-left:auto;display:flex;align-items:center;gap:8px;white-space:nowrap}
}
@media (min-width:761px){.mobile-menu-toggle{display:none!important}}


/* V45 header polish: centered brand, clean left navigation and right account controls. */
.header{position:sticky;top:0;z-index:1000}
.header .logo{position:absolute;left:50%;transform:translateX(-50%);z-index:2;white-space:nowrap}
.header .nav{margin-right:auto;max-width:46%;overflow:auto;scrollbar-width:none}
.header .nav::-webkit-scrollbar{display:none}
.header .auth{margin-left:auto;z-index:3;align-items:center}
.header .welcome-user{color:#172033;font-weight:650;padding:10px 6px}
@media(max-width:760px){
  .header{min-height:68px;padding:10px 14px;gap:10px}
  .header .logo{position:relative;left:auto;transform:none;order:1;margin:0 auto;z-index:2}
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  .header .auth{order:2;margin-left:0}
  .header .auth .welcome-user{display:none}
  .header .nav{order:3;max-width:none;margin:0}
}
.taxonomy-level{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px;width:100%}.taxonomy-label{font-weight:800;color:#5f6b7a;margin-right:4px}.taxonomy-level .category-filter{font-size:13px;padding:9px 12px}

/* V45 mobile consistency patch: keep every primary page in the same responsive layout. */
html,body{max-width:100%;overflow-x:hidden}
@media (max-width:760px){
  .header{width:100%;padding:10px 12px;min-height:68px;height:auto;gap:8px}
  .header .logo{font-size:20px;line-height:1;max-width:52vw;overflow:hidden;text-overflow:ellipsis}
  .header .logo:before{width:32px;height:32px;margin-right:7px}
  .header .nav{display:flex!important;top:calc(100% + 6px);left:10px;right:10px;width:auto;max-width:none;box-shadow:0 14px 35px rgba(20,30,50,.14);}
  .header .nav a{font-size:15px;width:100%}
  .profile-page{width:100%;max-width:none;margin:0;padding:28px 14px 50px}
  .profile-head{gap:14px;flex-wrap:wrap}
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  .profile-head h1{font-size:30px;line-height:1.12;word-break:break-word}
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  .profile-card{width:100%;overflow:hidden}
  .admin-table{width:100%;min-width:0;display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .admin-table table{min-width:620px}
  .sessions-card .card-title{gap:12px}
}
@media (max-width:480px){
  .header{padding:9px 10px}
  .header .logo{font-size:18px;max-width:48vw}
  .header .auth{gap:3px}
  .header .auth .login,.header .auth .nav-btn{padding:8px 7px;font-size:13px}
  .profile-page{padding-left:12px;padding-right:12px}
  .profile-head h1{font-size:27px}
  .profile-head .avatar{width:52px;height:52px;border-radius:16px;font-size:19px}
  .profile-card{padding:17px}
}
/* examspeed.com v10 — app-style exam folders */
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/* examspeed.com v10 — premium homepage refresh */
body{background:#f7f8fc}
.home-hero-upgrade{position:relative;isolation:isolate;max-width:1240px;margin:0 auto;padding:78px 30px 64px;grid-template-columns:minmax(0,1.05fr) minmax(430px,.95fr);gap:54px;min-height:560px}
.home-hero-upgrade:before{content:"";position:absolute;z-index:-2;left:-80px;right:-80px;top:0;height:100%;background:radial-gradient(circle at 76% 42%,rgba(255,122,0,.13),transparent 32%),radial-gradient(circle at 12% 20%,rgba(92,119,255,.08),transparent 27%)}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid #ffd7bd;border-radius:999px;background:rgba(255,255,255,.78);box-shadow:0 6px 18px rgba(25,35,55,.04)}
.hero-copy h1{font-size:clamp(46px,6vw,76px);line-height:.98;letter-spacing:-3.8px;margin:18px 0 23px;color:#121a2a}
.hero-copy h1 span{background:linear-gradient(90deg,#ff6400,#ff8b22);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy>p{font-size:19px;line-height:1.75;color:#687386;max-width:650px;margin:0}
.hero-main-btn span,.home-cta .button span,.text-link span{margin-left:8px;font-size:18px}
.hero-trust{display:flex;flex-wrap:wrap;gap:18px 24px;margin-top:27px;color:#687386;font-size:13px;font-weight:700}
.hero-trust i{font-style:normal;display:inline-grid;place-items:center;width:19px;height:19px;margin-right:6px;border-radius:50%;background:#eaf8f0;color:#15935a;font-size:11px}
.hero-visual{position:relative;min-height:430px;display:grid;place-items:center}
.hero-glow{position:absolute;width:390px;height:390px;border-radius:50%;background:radial-gradient(circle,rgba(255,122,0,.20),rgba(255,122,0,0) 68%);filter:blur(2px)}
.hero-panel{position:relative;width:min(430px,100%);min-height:345px;padding:29px;border-radius:28px;background:linear-gradient(145deg,#151d2d,#222c40);color:#fff;box-shadow:0 30px 70px rgba(20,29,45,.23);border:1px solid rgba(255,255,255,.08);overflow:hidden}
.hero-panel:after{content:"";position:absolute;width:180px;height:180px;right:-70px;top:-70px;border-radius:50%;background:rgba(255,122,0,.17);filter:blur(3px)}
.panel-top{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;color:#aeb9cb;font-size:11px;letter-spacing:1.3px;font-weight:800}.panel-top>div{display:flex;align-items:center;gap:8px}.panel-top #prepStatus{color:#72e0a0}.live-dot{width:7px;height:7px;border-radius:50%;background:#61dc94;box-shadow:0 0 0 5px rgba(97,220,148,.12)}
.panel-number{position:relative;z-index:1;font-size:78px;letter-spacing:-4px;font-weight:900;margin-top:45px;line-height:.95}.panel-text{position:relative;z-index:1;color:#aeb9cb;margin-top:9px;font-size:14px}
.stats{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:42px}.stats div{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.10);border-radius:14px;padding:13px}.stats b{display:block;font-size:18px}.stats small{display:block;color:#9ba8bc;margin-top:4px;font-size:11px}.progress-demo{position:relative;z-index:1;margin-top:24px}.progress-demo>div:first-child{display:flex;justify-content:space-between;font-size:11px;color:#aeb9cb;margin-bottom:8px}.progress-demo b{color:#fff}.progress-track{height:7px;background:rgba(255,255,255,.10);border-radius:999px;overflow:hidden}.progress-track span{display:block;width:64%;height:100%;background:linear-gradient(90deg,#ff6400,#ffad59);border-radius:999px}
.floating-card{position:absolute;display:flex;align-items:center;gap:11px;padding:12px 15px;border:1px solid rgba(226,230,238,.9);background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-radius:15px;box-shadow:0 16px 35px rgba(20,30,50,.12);animation:qnfloat 4.5s ease-in-out infinite}.floating-card-one{left:0;bottom:45px}.floating-card-two{right:-5px;top:42px;animation-delay:-1.8s}.float-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:#fff0e6;color:#ff6b00;font-weight:900}.floating-card b,.floating-card small{display:block}.floating-card b{font-size:12px;color:#202a3c}.floating-card small{font-size:10px;color:#7b8493;margin-top:3px}@keyframes qnfloat{50%{transform:translateY(-7px)}}
.quick-features{max-width:1180px;margin:0 auto 35px;padding:0 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.quick-feature{display:flex;align-items:center;gap:13px;padding:17px 18px;background:#fff;border:1px solid #e9ecf1;border-radius:16px;box-shadow:0 8px 25px rgba(20,30,50,.045)}.feature-icon{width:39px;height:39px;display:grid;place-items:center;border-radius:11px;background:#f2f4f8;color:#687386;font-size:11px;font-weight:900}.quick-feature b,.quick-feature small{display:block}.quick-feature b{font-size:13px}.quick-feature small{font-size:11px;color:#7b8493;margin-top:4px}
.home-section-heading{align-items:flex-end}.home-section-heading h2{font-size:36px;letter-spacing:-1.2px}.home-section-heading p{margin:8px 0 0;color:#7a8492;font-size:14px}.section-chip{padding:8px 12px;border:1px solid #e4e8ef;border-radius:999px;background:#fff;color:#697386!important;font-size:11px!important;font-weight:800!important}
.exam-folder{border-radius:22px}.exam-folder .folder-art{height:128px;background:linear-gradient(135deg,#fff8f3,#f8f9fc)}.exam-folder:hover{transform:translateY(-7px);box-shadow:0 24px 48px rgba(20,30,50,.12)}.folder-body{padding:19px 52px 21px 21px}.folder-body h3{font-size:20px;letter-spacing:-.3px}.folder-arrow{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:#fff0e6;right:17px;bottom:17px;font-size:17px}
.home-benefits{max-width:1180px;margin:0 auto;padding:45px 24px 80px;display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start}.benefit-intro h2{font-size:38px;line-height:1.08;letter-spacing:-1.5px;margin:8px 0 15px}.benefit-intro p{color:#707a8a;line-height:1.7;margin:0 0 22px}.text-link{color:#e85f00;text-decoration:none;font-size:14px;font-weight:900}.benefit-grid{display:grid;gap:12px}.benefit-grid article{background:#fff;border:1px solid #e8ebf0;border-radius:17px;padding:20px 22px}.benefit-number{font-size:10px;font-weight:900;color:#ff6b00;letter-spacing:1px}.benefit-grid h3{margin:7px 0 5px;font-size:17px}.benefit-grid p{margin:0;color:#727c8d;font-size:13px;line-height:1.65}
.home-cta{max-width:1180px;margin:0 auto 70px;padding:34px 38px;border-radius:25px;background:linear-gradient(110deg,#171f30,#273349);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px;box-shadow:0 22px 55px rgba(22,31,47,.18)}.home-cta .eyebrow{color:#ffab70}.home-cta h2{font-size:31px;letter-spacing:-1px;margin:5px 0 8px}.home-cta p{color:#aeb8c8;margin:0}.home-cta .button{flex:0 0 auto;box-shadow:0 10px 25px rgba(255,107,0,.22)}
footer{border-top:1px solid #e7eaf0;background:#fff;padding:28px 20px;color:#7c8594;font-size:13px}
@media(max-width:900px){.home-hero-upgrade{grid-template-columns:1fr;padding:54px 20px 40px;gap:35px}.hero-copy h1{font-size:52px}.hero-visual{min-height:390px}.quick-features{grid-template-columns:1fr;padding:0 20px}.home-benefits{grid-template-columns:1fr;padding:30px 20px 60px;gap:30px}.home-cta{margin:0 20px 55px;padding:28px;flex-direction:column;align-items:flex-start}.home-cta .button{width:100%;text-align:center}}
@media(max-width:600px){.home-hero-upgrade{padding:39px 14px 30px;min-height:0}.hero-copy h1{font-size:42px;letter-spacing:-2px}.hero-copy>p{font-size:16px;line-height:1.65}.hero-trust{display:grid;gap:9px}.hero-visual{min-height:390px}.hero-panel{min-height:320px;padding:23px;border-radius:23px}.panel-number{font-size:66px;margin-top:40px}.stats{margin-top:34px}.floating-card-one{left:-3px;bottom:12px}.floating-card-two{right:-3px;top:12px}.floating-card{padding:10px 11px}.floating-card b{font-size:11px}.floating-card small{font-size:9px}.quick-features{padding:0 14px}.home-section-heading h2{font-size:29px}.folder-section{padding-left:14px;padding-right:14px}.section-chip{display:none}.home-benefits{padding-left:14px;padding-right:14px}.benefit-intro h2{font-size:31px}.home-cta{margin-left:14px;margin-right:14px;border-radius:21px}.home-cta h2{font-size:26px}}

.home-banner-wrap{max-width:1240px;margin:18px auto 0;padding:0 24px;position:relative}.home-banner{display:none;position:relative;text-decoration:none;border-radius:22px;overflow:hidden;border:1px solid #e7eaf0;background:#fff;box-shadow:0 14px 40px rgba(20,30,50,.09)}.home-banner.active{display:block;animation:qnBannerIn .45s ease}.home-banner img{display:block;width:100%;aspect-ratio:3.2/1;object-fit:cover}.home-banner-title{position:absolute;left:18px;bottom:16px;padding:9px 13px;border-radius:10px;background:rgba(0,0,0,.65);color:#fff;font-weight:800;font-size:14px;backdrop-filter:blur(5px)}@keyframes qnBannerIn{from{opacity:.35;transform:translateY(5px)}to{opacity:1;transform:none}}.banner-admin-card{border:1px solid #e7e9ef;border-radius:16px;padding:16px;margin:14px 0;background:#fff}.banner-admin-preview{border-radius:12px;overflow:hidden;background:#f5f6f8;min-height:90px;margin-bottom:14px;display:grid;place-items:center;color:#8a92a0}.banner-admin-preview img{display:block;width:100%;max-height:240px;object-fit:cover}.banner-admin-card .admin-form{margin:0}.banner-admin-card .button{margin-top:4px}@media(max-width:700px){.home-banner-wrap{padding:0 14px;margin-top:12px}.home-banner{border-radius:16px}.home-banner img{aspect-ratio:2.2/1}.home-banner-title{left:10px;bottom:10px;font-size:11px;padding:7px 9px}}

/* examspeed.com engagement layer */
.engagement-section{max-width:1180px;margin:0 auto;padding:35px 24px 70px}.engagement-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}.engagement-heading h2{font-size:36px;letter-spacing:-1.2px;margin:6px 0}.engagement-heading p{margin:0;color:#778193;line-height:1.6}.engagement-grid{display:grid;grid-template-columns:1.15fr .8fr 1fr;gap:15px}.engagement-card{position:relative;overflow:hidden;background:#fff;border:1px solid #e7eaf0;border-radius:22px;padding:23px;box-shadow:0 12px 32px rgba(20,30,50,.06);min-height:220px}.engagement-card:after{content:'';position:absolute;width:150px;height:150px;right:-65px;top:-65px;border-radius:50%;background:#f4f6fa;z-index:0}.engagement-card>*{position:relative;z-index:1}.engagement-card-top{display:flex;justify-content:space-between;align-items:center}.engagement-icon{font-size:27px}.engagement-badge{font-size:9px;font-weight:900;letter-spacing:1.2px;color:#7a8492;background:#f5f6f8;border-radius:999px;padding:7px 9px}.engagement-card h3{font-size:21px;margin:16px 0 8px}.engagement-card p{color:#727c8d;font-size:13px;line-height:1.6;min-height:42px}.challenge-card{background:linear-gradient(145deg,#fff,#fff8f2)}.challenge-meta{display:flex;gap:7px;flex-wrap:wrap;margin:10px 0 17px}.challenge-meta span{font-size:10px;font-weight:800;padding:6px 8px;border-radius:8px;background:#fff0e6;color:#d85e0a}.button.small{padding:10px 14px;font-size:12px}.big-metric{font-size:64px;line-height:1;font-weight:950;letter-spacing:-3px;margin-top:28px}.streak-card .big-metric{background:linear-gradient(90deg,#ff5f00,#ff9f43);-webkit-background-clip:text;background-clip:text;color:transparent}.streak-dots{display:flex;gap:7px;margin-top:18px}.streak-dots span{width:22px;height:7px;border-radius:99px;background:#e7eaf0}.streak-dots span.done{background:#ff7a00}.achievement-mini-list{display:grid;gap:9px;margin:13px 0 18px}.achievement-mini{display:flex;align-items:center;gap:9px;font-size:12px}.achievement-mini span{width:24px;height:24px;display:grid;place-items:center;border-radius:8px;background:#eef9f2;color:#149257;font-weight:900}.achievement-mini b{font-size:12px}.achievement-card .text-link{font-size:12px}@media(max-width:900px){.engagement-grid{grid-template-columns:1fr 1fr}.challenge-card{grid-column:1/-1}}@media(max-width:600px){.engagement-section{padding:25px 14px 50px}.engagement-heading{align-items:flex-start;flex-direction:column}.engagement-heading h2{font-size:29px}.engagement-grid{grid-template-columns:1fr}.challenge-card{grid-column:auto}.engagement-card{min-height:190px;padding:19px}.big-metric{font-size:54px}}
.rank-move-card{background:linear-gradient(135deg,#f8fbff,#fff);border:1px solid #e3e9f5}.rank-move-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:16px}.rank-move-grid>div{padding:18px;border:1px solid #e6eaf2;border-radius:16px;background:#fff;display:flex;flex-direction:column;gap:5px}.rank-move-grid small{color:#687386;font-weight:700}.rank-move-grid strong{font-size:30px}.rank-move-grid span{font-weight:700}@media(max-width:600px){.rank-move-grid{grid-template-columns:1fr}}
.smart-area-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.smart-area{display:grid;grid-template-columns:1fr auto;gap:4px 12px;padding:16px;border:1px solid #e7eaf0;border-radius:16px;background:#fff}.smart-area small{display:block;color:#737b8a;margin-top:4px}.smart-area strong{font-size:24px}.smart-area a{grid-column:1/-1;font-weight:800;text-decoration:none}.smart-area strong{align-self:center}@media(max-width:650px){.smart-area-grid{grid-template-columns:1fr}}

.achievements-showcase{margin-top:22px}.badge-count{font-size:12px;font-weight:900;padding:8px 12px;border-radius:999px;background:#fff3e8;color:#d85e0a}.achievement-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px}.achievement-badge{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid #e9edf3;border-radius:16px;background:#fff;transition:.2s}.achievement-badge:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(20,30,50,.08)}.achievement-badge .badge-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:23px;background:#f1f4f8}.achievement-badge.unlocked{border-color:#cdebd8;background:linear-gradient(135deg,#fff,#f5fff8)}.achievement-badge.unlocked .badge-icon{background:#e9f8ef}.achievement-badge.locked{opacity:.72}.achievement-badge b{display:block;font-size:14px}.achievement-badge small{display:block;margin-top:4px;color:#7a8491;font-size:11px}.achievement-badge>span{margin-left:auto;font-weight:900;color:#15945b}@media(max-width:650px){.achievement-grid{grid-template-columns:1fr}.badge-count{align-self:flex-start}}

.level-card{overflow:hidden;background:linear-gradient(135deg,#f7f9ff,#fff)}.level-main{display:flex;align-items:center;gap:18px;margin-top:18px}.level-orb{width:82px;height:82px;border-radius:50%;display:grid;place-items:center;font-size:28px;font-weight:900;background:linear-gradient(135deg,#6c5ce7,#00b894);color:#fff;box-shadow:0 10px 28px rgba(70,60,180,.2)}.level-copy{flex:1;min-width:0}.level-copy strong{display:block;font-size:22px}.level-copy span{display:block;margin:4px 0 10px;font-weight:700}.xp-track{height:12px;border-radius:999px;background:#e8ebf3;overflow:hidden}.xp-fill{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,#6c5ce7,#00b894);transition:width .7s ease}.level-chip{padding:8px 12px;border-radius:999px;font-weight:800;background:#eef0ff}.level-copy small{display:block;margin-top:8px;color:#70778a}@media(max-width:600px){.level-main{align-items:flex-start}.level-orb{width:68px;height:68px;font-size:23px}.level-copy strong{font-size:19px}}

.reward-card{overflow:hidden}.reward-main{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 20px;border:1px solid #e8ecf4;border-radius:16px;background:linear-gradient(135deg,#fff7df,#f4f7ff)}.reward-main strong{display:block;font-size:30px}.reward-main span{display:block;color:#667085;margin-top:4px}.reward-track{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.reward-track span{padding:7px 10px;border-radius:999px;background:#f1f4f9;font-size:12px;font-weight:700}.reward-main button:disabled{opacity:.55;cursor:not-allowed}@media(max-width:700px){.reward-main{flex-direction:column;align-items:stretch}.reward-main button{width:100%}}

.recommendation-section{padding:56px 0}.recommendation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.recommendation-card{display:flex;align-items:center;gap:16px;padding:20px;border:1px solid #e7eaf0;border-radius:20px;background:#fff;box-shadow:0 10px 30px rgba(20,30,60,.06)}.recommendation-icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:#eef4ff;font-size:23px;flex:0 0 auto}.recommendation-main{min-width:0;flex:1}.recommendation-label{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.recommendation-card h3{margin:5px 0 3px;font-size:18px}.recommendation-card p{margin:0;color:#687080;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.recommendation-meta{display:flex;gap:12px;margin-top:9px;font-size:12px;color:#747b88}.recommendation-card .button{flex:0 0 auto}@media(max-width:760px){.recommendation-grid{grid-template-columns:1fr}.recommendation-card{align-items:flex-start}.recommendation-card .button{margin-left:auto}}
