:root{color-scheme:light;--bg:#f4f7fb;--surface:#fff;--soft:#eff4fb;--text:#1b293b;--heading:#102e4e;--muted:#61738a;--border:#dae4ef;--blue:#1763cf;--blue-hover:#1054b5;--blue-ink:#fff;--navy:#102e4e;--sidebar:#102e4e;--sidebar-tint:#ffffff19;--sidebar-text:#d2e2f2;--hero-text:#c6d8e9;--hero-accent:#f8b77e;--positive:#168257;--positive-soft:#e7f5ed;--shadow:0 10px 40px rgba(16,46,78,.055)}
html[data-theme="dark"]{color-scheme:dark;--bg:#0b1422;--surface:#142236;--soft:#1d3048;--text:#e9eff8;--heading:#f5f8ff;--muted:#a8bad0;--border:#2c4057;--blue:#69a6ff;--blue-hover:#91baff;--blue-ink:#091829;--navy:#0a1a30;--sidebar:#08192d;--sidebar-tint:#ffffff15;--sidebar-text:#d2e2f2;--hero-text:#d0ddee;--hero-accent:#ffbd87;--positive:#6cdda6;--positive-soft:#173b34;--shadow:0 12px 46px rgba(0,0,0,.16)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}a{text-decoration:none;color:inherit}button,input,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}a,button,input,select{outline-offset:3px}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--blue)}h1,h2,h3{color:var(--heading);line-height:1.2;letter-spacing:-.5px}h1,h2,h3,p{margin-top:0}p{color:var(--muted)}.container{width:min(1160px,92%);margin:auto}.muted{color:var(--muted)}.small{font-size:13px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:43px;padding:10px 17px;background:var(--surface);border:1px solid var(--border);border-radius:10px;color:var(--heading);font-size:14px;font-weight:700;text-align:center}.btn:hover:not(:disabled){filter:brightness(.96)}.btn-primary{background:var(--blue);border-color:var(--blue);color:var(--blue-ink)}.btn-outline{border-color:var(--border);background:var(--surface)}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;min-width:94px;min-height:39px;padding:8px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--heading);font-weight:700;font-size:13px}.theme-toggle:hover{border-color:var(--blue)}.card{background:var(--surface);border:1px solid var(--border);border-radius:15px;box-shadow:var(--shadow)}.badge{display:inline-block;border-radius:100px;padding:5px 11px;background:var(--soft);color:var(--blue);font-size:11px;font-weight:800}.eyebrow{color:var(--blue);font-weight:800;letter-spacing:1.6px;text-transform:uppercase;font-size:11px}.field{margin-bottom:17px}.field label{display:block;margin-bottom:7px;font-size:13px;font-weight:650;color:var(--text)}.field input,.field select{display:block;width:100%;border:1px solid var(--border);border-radius:9px;background:var(--surface);color:var(--text);padding:12px 13px}.field input::placeholder{color:var(--muted)}.field input:focus,.field select:focus{border-color:var(--blue)}.notice{display:none;padding:12px 14px;border-radius:9px;font-size:13px;margin:16px 0;line-height:1.5}.notice.visible{display:block}.notice.ok{background:var(--positive-soft);color:var(--positive)}.notice.error{background:#ffece8;color:#872d27}html[data-theme="dark"] .notice.error{background:#4b2629;color:#ffbdbd}.notice.info{background:var(--soft);color:var(--text)}
/* Home */
.home-topbar{background:var(--navy);color:#d8e8fa;text-align:center;padding:7px 10px;font-size:12px}.home-nav{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.home-nav-inner{min-height:75px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;color:var(--heading);font-size:19px;font-weight:800;letter-spacing:-.4px}.brand-icon{display:grid;place-items:center;flex:0 0 auto;width:42px;height:42px;background:#102e4e;border-radius:11px;color:#fff;font-size:22px}.brand small{display:block;color:var(--muted);letter-spacing:1px;font-size:10px;line-height:1.4;font-weight:600}.home-links{display:flex;align-items:center;gap:23px;font-weight:650;font-size:14px}.home-links a:not(.btn):hover{color:var(--blue)}.menu-toggle{display:none}.hero{padding:77px 0 84px;background:var(--navy);color:#fff;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;width:350px;height:350px;border:60px solid #ffffff08;border-radius:50%;right:-170px;top:-170px;pointer-events:none}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:55px;position:relative;z-index:1}.hero .eyebrow{color:var(--hero-accent)}.hero h1{font-size:clamp(35px,4.4vw,59px);line-height:1.11;letter-spacing:-2px;color:#fff;margin:0 0 20px}.hero h1 span{color:var(--hero-accent)}.hero p{color:var(--hero-text);font-size:16px;margin-bottom:26px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.hero .btn-outline{background:#fff;border-color:#fff;color:#102e4e}.hero-points{display:flex;flex-wrap:wrap;gap:16px;color:#deebf7;font-size:12px;margin-top:30px}.preview-card{background:var(--surface);color:var(--text);padding:23px;border-radius:16px;box-shadow:0 25px 55px #0002}.preview-card strong{color:var(--heading)}.preview-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding-bottom:14px;margin-bottom:18px}.progress-track{height:8px;background:var(--soft);border-radius:99px;overflow:hidden;margin:12px 0 20px}.progress-track span{display:block;width:68%;height:100%;background:var(--blue)}.preview-tiles{display:grid;grid-template-columns:1fr 1fr;gap:12px}.preview-tile{background:var(--soft);padding:17px 14px;border-radius:11px}.preview-tile strong{display:block;font-size:25px}.preview-tile small{display:block;color:var(--muted)}.preview-footer{background:var(--soft);color:var(--heading);padding:13px;border-radius:10px;font-size:12px;margin-top:15px}section.home-section{padding:72px 0}.section-header{text-align:center;margin-bottom:33px}.section-header h2{font-size:clamp(26px,3vw,36px);margin:9px 0}.section-header p{margin:0}.feature-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.feature-card{padding:26px}.feature-icon{font-size:23px;display:grid;place-items:center;width:47px;height:47px;border-radius:11px;background:var(--soft);margin-bottom:17px}.feature-card h3{margin-bottom:8px}.feature-card p{font-size:14px;min-height:69px}.tags{display:flex;gap:7px;flex-wrap:wrap;margin:16px 0}.tag{display:inline-block;padding:5px 9px;border-radius:6px;background:var(--soft);color:var(--muted);font-size:11px;font-weight:600}.practice-section{background:var(--soft)}.question-card{max-width:760px;margin:auto;padding:30px}.question-head{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:13px}.question-card h3{font-size:20px;margin:20px 0 14px}.voice-controls{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}.voice-controls button{padding:9px 11px;border:1px solid var(--border);border-radius:8px;color:var(--heading);background:var(--soft);font-weight:700;font-size:12px}.option{display:flex;align-items:center;gap:12px;padding:13px;border:1px solid var(--border);border-radius:9px;margin-bottom:9px;cursor:pointer}.option input{accent-color:var(--blue)}.option:has(input:checked){border-color:var(--blue);background:var(--soft)}.answer-feedback{display:none;margin-top:14px;padding:14px;background:var(--positive-soft);color:var(--positive);border-radius:9px;font-size:14px}.answer-feedback.show{display:block}.question-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-top:19px;padding-top:18px;border-top:1px solid var(--border)}.question-actions small{color:var(--muted)}.pricing-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.plan{padding:20px 14px;display:flex;flex-direction:column;gap:10px}.plan.featured{border:2px solid var(--blue)}.plan h3{font-size:16px;min-height:40px;margin:0}.plan-price{font-size:29px;font-weight:850;color:var(--heading)}.plan small{color:var(--muted)}.plan ul{padding-left:16px;font-size:12px;color:var(--muted);flex:1}.plan li{margin:9px 0}.plan .btn{width:100%;font-size:12px}.pricing-note{text-align:center;font-size:12px;margin-top:20px}.site-footer{background:var(--navy);color:#c8d8e9;padding:33px 0}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;font-size:12px}.footer-inner strong{font-size:16px;color:#fff}.toast{display:none;position:fixed;bottom:20px;right:20px;background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:var(--shadow);padding:14px 17px;border-radius:10px;max-width:310px;z-index:30;font-size:13px}.toast.show{display:block}
/* Auth */
.auth-layout{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}.auth-intro{display:flex;flex-direction:column;justify-content:space-between;background:var(--navy);color:#fff;padding:clamp(25px,6vw,80px)}.auth-intro .brand{color:#fff}.auth-intro .brand-icon{background:#ffffff12;border:1px solid #ffffff45}.auth-intro h1{font-size:clamp(37px,4.3vw,58px);color:#fff;letter-spacing:-1.7px}.auth-intro h1 span{color:var(--hero-accent)}.auth-intro p{color:var(--hero-text);max-width:480px;line-height:1.8}.auth-intro small{color:var(--hero-text)}.auth-main{display:grid;place-items:center;padding:32px 20px}.auth-card{width:100%;max-width:450px;padding:38px}.auth-card h2{font-size:28px;margin:25px 0 7px}.auth-card .subtitle{font-size:14px;margin-bottom:24px}.back-link{color:var(--blue);font-size:13px;font-weight:700}.tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:5px;background:var(--soft);border-radius:10px;margin-bottom:23px}.tab{border:0;border-radius:7px;padding:10px;background:transparent;color:var(--muted);font-weight:750}.tab.active{background:var(--surface);color:var(--heading);box-shadow:0 2px 7px #0001}.password-wrap{position:relative}.password-wrap input{padding-right:75px}.show-password{position:absolute;right:10px;top:50%;transform:translateY(-50%);border:0;background:transparent;color:var(--blue);font-weight:700;font-size:12px}.forgot{display:block;text-align:right;margin:-4px 0 21px;font-size:13px;color:var(--blue)}.auth-card .btn{width:100%}.divider-text{display:flex;align-items:center;gap:12px;margin:20px 0;color:var(--muted);font-size:12px}.divider-text:before,.divider-text:after{content:"";height:1px;background:var(--border);flex:1}.auth-footnote{text-align:center;color:var(--muted);font-size:12px;margin:22px 0 0}.auth-header{display:flex;justify-content:flex-end;margin-bottom:10px}.account-email{overflow-wrap:anywhere}
/* Dashboard */
.dash-loading{min-height:100vh;display:grid;place-items:center;text-align:center;padding:18px;color:var(--heading);font-weight:700}.dash-shell{display:none;grid-template-columns:246px minmax(0,1fr);min-height:100vh}.sidebar{background:var(--sidebar);color:var(--sidebar-text);display:flex;flex-direction:column;padding:27px 18px;gap:27px}.sidebar .brand{color:#fff;font-size:18px}.sidebar .brand small{color:#a9bed2}.sidebar .brand-icon{background:var(--sidebar-tint)}.side-nav{display:flex;flex-direction:column;gap:7px}.side-caption{font-size:10px;letter-spacing:1.5px;color:#9bb7d1;padding:0 12px}.side-item{display:flex;align-items:center;gap:11px;padding:12px;border-radius:10px;color:var(--sidebar-text);font-size:14px}.side-item.active,.side-item:hover{background:var(--sidebar-tint);color:#fff}.side-item.active{font-weight:800}.sidebar-note{margin-top:auto;padding:16px;border:1px solid #ffffff28;border-radius:12px;color:#b8cde0;font-size:12px}.sidebar-note p{color:#b8cde0;margin:7px 0 0}.dash-main{min-width:0}.dash-header{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;background:var(--surface);border-bottom:1px solid var(--border);padding:18px 33px}.dash-header strong{color:var(--heading);font-size:18px}.dash-header-actions{display:flex;align-items:center;gap:10px}.avatar{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--soft);color:var(--blue);font-weight:800}.dash-content{max-width:1250px;padding:35px;margin:auto}.welcome{margin-bottom:27px}.welcome h1{font-size:31px;margin:7px 0}.welcome p{font-size:14px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:25px}.stat-card{padding:22px}.stat-label{font-size:12px;color:var(--muted);margin-bottom:12px}.stat-value{color:var(--heading);font-size:26px;font-weight:800;line-height:1.2;overflow-wrap:anywhere}.stat-note{font-size:11px;color:var(--muted);margin-top:9px}.dash-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;margin-bottom:20px}.dash-card{padding:23px;min-width:0}.card-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}.card-heading h2{margin:0;font-size:20px}.exam-choice{display:block;width:100%;margin:7px 0 20px;padding:12px;background:var(--surface);border:1px solid var(--border);border-radius:9px;color:var(--text)}.exam-info{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:19px}.info-box{background:var(--soft);padding:15px;border-radius:10px}.info-box strong{display:block;color:var(--heading);font-size:22px}.info-box span{color:var(--muted);font-size:12px}.dash-feature{display:flex;align-items:center;gap:13px;border-bottom:1px solid var(--border);padding:14px 0}.dash-feature:last-child{border:0}.dash-feature-icon{background:var(--soft);font-size:21px;width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;border-radius:10px}.dash-feature-body{flex:1}.dash-feature-body strong{color:var(--heading);display:block;font-size:14px}.dash-feature-body small{color:var(--muted);font-size:12px}.plan-box{background:var(--soft);padding:18px;border-radius:12px;margin-bottom:18px}.plan-box small{color:var(--muted);font-size:11px}.plan-box h3{margin:7px 0 10px}.plan-details{display:grid;grid-template-columns:auto 1fr;gap:7px 11px;font-size:13px}.plan-details dt{color:var(--muted)}.plan-details dd{margin:0;font-weight:700;overflow-wrap:anywhere}.plan-explanation{font-size:13px}.category-list{display:flex;flex-direction:column;gap:16px}.category-top{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;margin-bottom:7px}.category-top strong{color:var(--heading)}.category-track{height:9px;background:var(--soft);border-radius:10px;overflow:hidden}.category-fill{height:100%;background:var(--blue);width:0}.empty-state{text-align:center;padding:28px 12px;color:var(--muted)}.empty-state strong{display:block;color:var(--heading);margin:8px 0}.empty-state p{font-size:13px}.dash-fineprint{color:var(--muted);font-size:12px}
@media(max-width:1080px){.pricing-grid{grid-template-columns:repeat(3,1fr)}.hero-grid{gap:25px}.stats{grid-template-columns:repeat(2,1fr)}.dash-grid{grid-template-columns:1fr}}
@media(max-width:800px){.auth-layout{grid-template-columns:1fr}.auth-intro{padding:20px}.auth-intro .intro-content,.auth-intro>small{display:none}.auth-main{padding:24px 15px}.auth-card{padding:25px}.hero-grid{grid-template-columns:1fr}.feature-cards{grid-template-columns:1fr}.home-links{display:none;position:absolute;top:75px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);padding:20px 5%;flex-direction:column;align-items:stretch}.home-links.open{display:flex}.menu-toggle{display:inline-flex}.hero{padding:55px 0}section.home-section{padding:50px 0}}
@media(max-width:700px){.dash-shell{grid-template-columns:1fr}.sidebar{padding:15px;gap:12px}.side-nav{flex-direction:row;overflow:auto}.side-caption,.sidebar-note{display:none}.side-item{white-space:nowrap}.dash-header{padding:15px}.dash-content{padding:22px 15px}.dash-card{padding:18px}.welcome h1{font-size:25px}.dash-feature{flex-wrap:wrap}}
@media(max-width:450px){.pricing-grid{grid-template-columns:1fr}.stats{gap:10px}.stat-card{padding:15px}.stat-value{font-size:20px}.preview-card{padding:17px}.question-card{padding:18px}.hero-actions .btn{width:100%}.dash-header-actions{gap:6px}.dash-header strong{font-size:15px}}