:root {
  --ink:#10283c;
  --muted:#617589;
  --surface:#ffffff;
  --surface-soft:#f4f8fb;
  --line:#dbe6ee;
  --brand:#0f3557;
  --brand-2:#1d6c91;
  --accent:#f2a23a;
  --ok:#167a50;
  --ok-soft:#eaf8f1;
  --bad:#b43a3a;
  --bad-soft:#fff0f0;
  --shadow:0 16px 42px rgba(15,53,87,.12);
  --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:#eef4f8}
body{margin:0;color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:
radial-gradient(circle at 100% 0%,rgba(29,108,145,.12),transparent 34rem),
radial-gradient(circle at 0% 25%,rgba(242,162,58,.10),transparent 28rem),#eef4f8;min-height:100vh}
button,a{font:inherit}
button{cursor:pointer}
img,video{max-width:100%;display:block}
.app-shell{min-height:100vh}
.topbar{position:sticky;top:0;z-index:50;padding:max(10px,env(safe-area-inset-top)) 18px 10px;background:rgba(238,244,248,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,230,238,.8)}
.topbar-inner{max-width:1180px;margin:auto;display:flex;align-items:center;gap:14px}
.brand{display:flex;align-items:center;gap:10px;border:0;background:transparent;color:var(--brand);font-weight:900;font-size:1.05rem;padding:8px;border-radius:14px}
.brand-mark{width:40px;height:40px;border-radius:14px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 22px rgba(15,53,87,.22);font-size:1.3rem}
.topbar-spacer{flex:1}
.nav-btn,.ghost-btn,.primary-btn,.next-btn{border:0;border-radius:14px;padding:11px 16px;font-weight:800;transition:.2s ease}
.nav-btn,.ghost-btn{background:#fff;color:var(--brand);box-shadow:0 5px 16px rgba(15,53,87,.08)}
.nav-btn:hover,.ghost-btn:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(15,53,87,.13)}
.primary-btn,.next-btn{color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 10px 24px rgba(15,53,87,.22)}
.primary-btn:hover,.next-btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(15,53,87,.28)}
.main{max-width:1180px;margin:0 auto;padding:28px 18px 54px}
.view{animation:viewIn .38s cubic-bezier(.2,.8,.2,1)}
@keyframes viewIn{from{opacity:0;transform:translateY(12px) scale(.99)}to{opacity:1;transform:none}}
.hero{position:relative;overflow:hidden;border-radius:32px;padding:clamp(28px,5vw,66px);color:#fff;background:linear-gradient(130deg,#0c2f4d 0%,#145779 58%,#1b7895 100%);box-shadow:var(--shadow);min-height:360px;display:grid;align-content:center}
.hero:before,.hero:after{content:"";position:absolute;border-radius:999px;filter:blur(1px);opacity:.22}
.hero:before{width:320px;height:320px;background:#fff;right:-110px;top:-120px;animation:float 7s ease-in-out infinite}
.hero:after{width:220px;height:220px;background:var(--accent);right:16%;bottom:-130px;animation:float 9s ease-in-out infinite reverse}
@keyframes float{50%{transform:translateY(18px) translateX(-12px)}}
.hero-content{position:relative;z-index:2;max-width:760px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.12);font-weight:800;font-size:.87rem;margin-bottom:16px}
.hero h1{font-size:clamp(2.25rem,6vw,5rem);line-height:.95;letter-spacing:-.045em;margin:0 0 18px}
.hero p{font-size:clamp(1rem,2vw,1.18rem);line-height:1.7;margin:0;max-width:72ch;color:rgba(255,255,255,.9)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero .primary-btn{background:#fff;color:var(--brand);box-shadow:none}.hero .ghost-btn{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.18);box-shadow:none}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:34px 2px 18px}
.section-head h2{margin:0;font-size:clamp(1.55rem,3vw,2.15rem);letter-spacing:-.025em}.section-head p{margin:6px 0 0;color:var(--muted)}
.feature-grid,.card-grid,.test-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.feature-card,.menu-card,.test-card,.reader-card,.quiz-card,.result-card{background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 30px rgba(15,53,87,.075)}
.feature-card,.menu-card,.test-card{padding:22px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.feature-card:hover,.menu-card:hover,.test-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bfd6e4}
.feature-icon{width:50px;height:50px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,#e7f3f8,#fff3df);font-size:1.5rem;margin-bottom:15px}
.feature-card h3,.menu-card h3,.test-card h3{margin:0 0 8px;font-size:1.12rem}.feature-card p,.menu-card p,.test-card p{margin:0;color:var(--muted);line-height:1.55}
.test-card{border:0;text-align:left;width:100%;position:relative;overflow:hidden}.test-card:after{content:"→";position:absolute;right:18px;bottom:17px;font-size:1.25rem;color:var(--brand-2);font-weight:900}
.test-number{font-size:.78rem;font-weight:900;letter-spacing:.08em;color:var(--brand-2);text-transform:uppercase}.test-score{margin-top:15px;font-size:.88rem;font-weight:800;color:var(--muted)}
.progress-track{height:8px;background:#e7eef3;border-radius:999px;overflow:hidden;margin-top:10px}.progress-fill{height:100%;background:linear-gradient(90deg,var(--brand-2),var(--accent));border-radius:inherit;transition:width .35s ease}
.page-title{margin:12px 0 4px;font-size:clamp(1.8rem,4vw,3rem);letter-spacing:-.035em}.page-subtitle{color:var(--muted);margin:0 0 24px;line-height:1.6}
.quiz-wrap{max-width:880px;margin:0 auto}.quiz-meta{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:12px;color:var(--muted);font-size:.9rem;font-weight:800}.quiz-card{padding:clamp(18px,4vw,36px)}
.question-number{display:inline-flex;padding:7px 11px;border-radius:999px;background:#e7f2f7;color:var(--brand);font-size:.82rem;font-weight:900;margin-bottom:12px}.question-text{font-size:clamp(1.22rem,3vw,1.72rem);line-height:1.42;margin:0 0 22px;letter-spacing:-.015em}
.answers{display:grid;gap:11px}.answer-btn{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;text-align:left;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:17px;padding:13px 14px;min-height:62px;transition:.18s ease}.answer-btn:hover:not(:disabled){border-color:#94b9cd;transform:translateX(3px);box-shadow:0 8px 18px rgba(15,53,87,.07)}.answer-btn:disabled{cursor:default}.answer-letter{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;background:#edf4f8;color:var(--brand);font-weight:950}.answer-btn.correct{border-color:#82c8aa;background:var(--ok-soft)}.answer-btn.correct .answer-letter{background:var(--ok);color:white}.answer-btn.wrong-selected{border-color:#e8a4a4;background:var(--bad-soft)}.answer-btn.wrong-selected .answer-letter{background:var(--bad);color:white}.answer-status{font-weight:950;font-size:.82rem}.correct .answer-status{color:var(--ok)}.wrong-selected .answer-status{color:var(--bad)}
.feedback{margin-top:22px;padding:20px;border-radius:18px;background:linear-gradient(135deg,#eef8ff,#f7fbfd);border:1px solid #cfe3ef;animation:feedbackIn .35s ease}.feedback h3{margin:0 0 10px;color:var(--brand);font-size:1rem}.feedback p{margin:0;line-height:1.72;white-space:pre-wrap}@keyframes feedbackIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.media-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin-top:18px}.media-card{overflow:hidden;border-radius:18px;background:#fff;border:1px solid var(--line);min-height:120px;display:grid;place-items:center}.media-card img,.media-card video{width:100%;height:100%;max-height:360px;object-fit:contain;background:#fff}.quiz-footer{display:flex;justify-content:flex-end;margin-top:20px}
.result-card{max-width:720px;margin:28px auto;padding:clamp(26px,6vw,52px);text-align:center}.result-orb{width:104px;height:104px;margin:0 auto 20px;border-radius:50%;display:grid;place-items:center;font-size:2.8rem;background:#edf4f8;animation:pop .48s cubic-bezier(.2,1.5,.5,1)}.result-card.pass .result-orb{background:var(--ok-soft)}.result-card.fail .result-orb{background:var(--bad-soft)}@keyframes pop{from{transform:scale(.65);opacity:0}to{transform:scale(1);opacity:1}}.result-card h2{margin:0;font-size:2rem}.score-big{font-size:clamp(3.2rem,10vw,6rem);font-weight:950;letter-spacing:-.07em;margin:10px 0;color:var(--brand)}.result-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:24px}
.menu-card{border:0;width:100%;text-align:left}.menu-card .meta{margin-top:12px;color:var(--brand-2);font-size:.86rem;font-weight:850}
.reader-card{padding:clamp(20px,4vw,38px);max-width:960px;margin:auto}.reader-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:22px}.reader-head h1{margin:0;font-size:clamp(1.55rem,4vw,2.5rem);line-height:1.1}.reader-page{white-space:nowrap;color:var(--muted);font-weight:850;font-size:.9rem}.reader-text{font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.02rem,2vw,1.18rem);line-height:1.82}.reader-text p{margin:0 0 1.25em}.reader-text p:first-child{font-family:Inter,system-ui,sans-serif;font-weight:900;color:var(--brand);font-size:1.08em}.reader-nav{display:flex;justify-content:space-between;gap:12px;margin-top:26px;border-top:1px solid var(--line);padding-top:20px}
.footer{max-width:1180px;margin:auto;padding:18px;color:var(--muted);font-size:.85rem;text-align:center}
.mobile-only{display:none}
@media(max-width:800px){.feature-grid,.card-grid{grid-template-columns:1fr}.test-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.topbar-inner .nav-label{display:none}.main{padding-top:18px}.hero{min-height:330px;border-radius:25px}.quiz-card{border-radius:20px}.answer-btn{grid-template-columns:38px 1fr;gap:10px}.answer-status{grid-column:2}.reader-head{display:block}.reader-page{margin-top:8px}.mobile-only{display:block}}
@media(max-width:480px){.test-grid{grid-template-columns:1fr}.topbar{padding-left:8px;padding-right:8px}.main{padding-left:12px;padding-right:12px}.hero{padding:28px 22px}.hero-actions>*{width:100%}.quiz-meta{font-size:.8rem}.reader-nav{flex-direction:column}.reader-nav button{width:100%}.feature-card,.menu-card,.test-card{padding:18px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}

/* License gate */
#license-gate{position:fixed;inset:0;z-index:99999;display:grid;place-items:center;padding:22px;background:radial-gradient(circle at 15% 10%,rgba(50,151,205,.24),transparent 34%),linear-gradient(145deg,#071d30,#103d60 56%,#0c2942);font-family:inherit;transition:opacity .35s ease,visibility .35s ease}
#license-gate.license-gate-hidden{opacity:0;visibility:hidden;pointer-events:none}
.license-panel{width:min(94vw,480px);padding:34px;border-radius:26px;background:rgba(255,255,255,.98);box-shadow:0 28px 80px rgba(0,0,0,.32);animation:licensePop .45s cubic-bezier(.2,.75,.25,1);text-align:center;color:#16324a}
.license-logo{font-size:3.4rem;line-height:1;margin-bottom:8px;filter:drop-shadow(0 7px 14px rgba(15,53,87,.16))}
.license-eyebrow{font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#2d7da8;margin-bottom:8px}
.license-panel h1{font-size:clamp(1.55rem,5vw,2.15rem);margin:0 0 10px}.license-copy{margin:0 auto 24px;color:#607489;max-width:36ch}
.license-panel form{text-align:left}.license-panel label{display:block;font-weight:800;margin-bottom:8px}.license-panel input{width:100%;box-sizing:border-box;border:2px solid #d7e2ea;border-radius:14px;padding:15px 16px;font:700 1rem/1.2 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.03em;text-transform:uppercase;outline:none;transition:.2s}
.license-panel input:focus{border-color:#2f8cba;box-shadow:0 0 0 4px rgba(47,140,186,.14)}.license-panel button{width:100%;border:0;border-radius:14px;padding:15px 18px;margin-top:13px;background:linear-gradient(135deg,#0f5f8f,#1788bb);color:white;font-weight:900;letter-spacing:.04em;cursor:pointer;box-shadow:0 12px 25px rgba(15,95,143,.22)}
.license-status{margin-top:16px;padding:12px 14px;border-radius:12px;background:#edf6fb;color:#245874;font-weight:700}.license-status.license-error{background:#fff0f0;color:#a82b2b}.license-help{font-size:.82rem;color:#788b9a;margin-top:18px;line-height:1.45}
@keyframes licensePop{from{opacity:0;transform:translateY(18px) scale(.97)}to{opacity:1;transform:none}}
@media(max-width:520px){.license-panel{padding:26px 20px;border-radius:22px}.license-panel input{font-size:.9rem}}


/* Free + Premium access */
#license-gate{position:fixed;inset:0;z-index:99999;display:grid;place-items:center;padding:22px;background:radial-gradient(circle at 15% 10%,rgba(50,151,205,.24),transparent 34%),linear-gradient(145deg,#071d30,#103d60 56%,#0c2942);font-family:inherit;transition:opacity .35s ease,visibility .35s ease}
#license-gate.license-gate-hidden{opacity:0;visibility:hidden;pointer-events:none;display:grid!important}
.license-panel{width:min(94vw,480px);padding:34px;border-radius:26px;background:rgba(255,255,255,.98);box-shadow:0 28px 80px rgba(0,0,0,.32);animation:licensePop .45s cubic-bezier(.2,.75,.25,1);text-align:center;color:#16324a}.license-logo{font-size:3.4rem;line-height:1;margin-bottom:8px}.license-eyebrow{font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#2d7da8;margin-bottom:8px}.license-panel h1{font-size:clamp(1.55rem,5vw,2.15rem);margin:0 0 10px}.license-copy{margin:0 auto 18px;color:#607489;max-width:38ch}.license-panel form{text-align:left}.license-panel label{display:block;font-weight:800;margin-bottom:8px}.license-panel input{width:100%;box-sizing:border-box;border:2px solid #d7e2ea;border-radius:14px;padding:15px 16px;font:700 1rem/1.2 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.03em;text-transform:uppercase;outline:none}.license-panel input:focus{border-color:#2f8cba;box-shadow:0 0 0 4px rgba(47,140,186,.14)}.license-panel form button{width:100%;border:0;border-radius:14px;padding:15px 18px;margin-top:13px;background:linear-gradient(135deg,#0f5f8f,#1788bb);color:white;font-weight:900;cursor:pointer}.license-status{margin-top:16px;padding:12px 14px;border-radius:12px;background:#edf6fb;color:#245874;font-weight:700}.license-status.license-error{background:#fff0f0;color:#a82b2b}.license-help{font-size:.82rem;color:#788b9a;margin-top:18px;line-height:1.45}@keyframes licensePop{from{opacity:0;transform:translateY(18px) scale(.97)}to{opacity:1;transform:none}}
.access-badge{display:inline-flex;align-items:center;border-radius:999px;padding:8px 11px;font-size:12px;font-weight:950;letter-spacing:.04em;border:1px solid transparent;white-space:nowrap;margin-left:8px}.access-badge.demo{background:#f0b52d;color:#4d3500}.access-badge.premium{background:#167a50;color:#fff}.unlock-btn{font-weight:900!important;margin-left:8px!important}.demo-offer{display:grid;grid-template-columns:1fr 1fr auto;align-items:center;gap:16px;background:#fff;border:1px solid var(--line,#d8e4ea);border-radius:22px;padding:16px 20px;margin:20px 0 6px;box-shadow:0 7px 28px rgba(15,53,87,.06)}.demo-offer div{display:grid;gap:3px}.demo-offer b{color:#795700}.demo-offer span{color:var(--muted,#617684);font-size:14px}.demo-card{position:relative;border:2px solid #73c8a4!important;background:linear-gradient(180deg,#f5fff9,#fff)!important}.premium-locked-card{position:relative;background:linear-gradient(180deg,#fffdf6,#fff)!important;border:1px solid #ead7a1!important}.free-tag,.premium-tag{position:absolute;right:16px;top:16px;border-radius:999px;padding:5px 9px;font-size:10px;font-weight:1000;letter-spacing:.07em}.free-tag{background:#167a50;color:#fff}.premium-tag{background:#ffe4a0;color:#725000}.demo-number{font-size:1rem!important;font-weight:950!important;color:#167a50!important}.premium-price{display:flex;align-items:baseline;justify-content:center;gap:10px;margin:18px 0 12px}.premium-price strong{font-size:42px;color:#8a6500}.premium-price span{color:#617684;font-weight:800}.license-pay{display:block;text-decoration:none;border-radius:14px;padding:14px;background:linear-gradient(135deg,#13a36f,#1cbb83);color:#fff;font-weight:950;box-shadow:0 8px 22px rgba(19,148,103,.19)}.school-offer{margin:15px 0;color:#4a6473;line-height:1.55;font-size:14px}.school-offer a{color:#8a6500;font-weight:900}.license-divider{display:flex;align-items:center;gap:10px;margin:18px 0 8px;color:#75909e;font-size:10px;font-weight:950;letter-spacing:.06em}.license-divider:before,.license-divider:after{content:"";height:1px;background:#d9e6ec;flex:1}.premium-panel{position:relative;max-height:min(94vh,760px);overflow:auto}.license-close{position:absolute;right:14px;top:12px!important;width:38px!important;height:38px!important;padding:0!important;margin:0!important;border-radius:50%!important;background:#eef4f7!important;color:#496270!important;font-size:26px!important;line-height:1!important;box-shadow:none!important;border:0!important}.license-copy b{color:#8a6500}
@media(max-width:800px){.demo-offer{grid-template-columns:1fr}.access-badge{font-size:10px;padding:7px 9px}.unlock-btn{font-size:12px!important;padding:8px 10px!important}}@media(max-width:520px){.license-panel{padding:26px 20px;border-radius:22px}.license-panel input{font-size:.9rem}}