:root{--nav:#092f50;--nav2:#0d4268;--blue:#147aa5;--cyan:#24a9b5;--ink:#102a3b;--muted:#607785;--bg:#f3f8fb;--card:#fff;--line:#dce8ee;--green:#1f9b67;--red:#d84b55;--gold:#e3a82d;--shadow:0 14px 44px rgba(12,54,78,.11)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;background:linear-gradient(180deg,#eef6fa 0,#f8fbfd 42%,#eef5f8 100%);color:var(--ink);min-height:100vh}button,input{font:inherit}button{cursor:pointer}.topbar{position:sticky;top:0;z-index:30;min-height:76px;background:linear-gradient(120deg,var(--nav),var(--nav2));display:flex;align-items:center;justify-content:space-between;padding:10px clamp(16px,4vw,54px);box-shadow:0 8px 28px #082a4433}.brand{display:flex;align-items:center;gap:12px;background:none;border:0;color:white;text-align:left}.brand .logo{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-weight:900;background:linear-gradient(135deg,#1bc08c,#1c91be);box-shadow:inset 0 0 0 1px #ffffff25}.brand b{display:block;font-size:18px}.brand small{display:block;color:#c8deeb;margin-top:2px}.topbar nav{display:flex;align-items:center;gap:10px}.nav-btn,.lang-badge{border:1px solid #ffffff28;color:white;background:#ffffff12;border-radius:999px;padding:9px 13px}.lang-badge{font-weight:800;font-size:13px}main{width:min(1240px,calc(100% - 28px));margin:0 auto 50px}.hero{margin:26px 0 20px;border-radius:28px;min-height:330px;padding:clamp(28px,5vw,64px);position:relative;overflow:hidden;background:radial-gradient(circle at 80% 18%,#4bd7d34f,transparent 28%),linear-gradient(135deg,#0c3554,#126a8e 60%,#1a92a4);color:#fff;display:grid;grid-template-columns:1.3fr .7fr;align-items:center;box-shadow:var(--shadow);animation:rise .55s ease both}.hero:before{content:"";position:absolute;width:330px;height:330px;border:60px solid #ffffff0c;border-radius:50%;right:-80px;top:-110px}.hero-copy{position:relative;z-index:2}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:900;letter-spacing:.08em;color:#f6bf4e;text-transform:uppercase}.hero h1,.page-head h1{font-size:clamp(32px,5vw,56px);line-height:1.02;margin:13px 0 16px;letter-spacing:-.04em}.hero p{font-size:clamp(16px,2vw,20px);line-height:1.6;color:#d9ebf3;max-width:780px}.stats{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.stats span{background:#ffffff12;border:1px solid #ffffff22;border-radius:15px;padding:10px 14px;font-size:13px}.stats b{font-size:19px;margin-right:5px}.car-art{height:220px;position:relative;display:grid;place-items:center}.road{position:absolute;width:135%;height:82px;background:#0c2939;transform:rotate(-8deg);border-radius:60%;box-shadow:inset 0 0 0 2px #ffffff12}.road:after{content:"";position:absolute;left:8%;right:8%;top:39px;border-top:3px dashed #f6cf6d}.car{font-size:96px;z-index:2;filter:drop-shadow(0 18px 15px #001a2e55);animation:drive 3.5s ease-in-out infinite}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card,.category-card,.test-card{border:1px solid var(--line);background:var(--card);border-radius:24px;padding:24px;text-align:left;color:var(--ink);box-shadow:0 7px 28px #153b5410;transition:.23s transform,.23s box-shadow,.23s border-color;animation:rise .5s ease both}.feature-card:hover,.category-card:hover,.test-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#a9cfdf}.feature-icon{display:grid;place-items:center;width:50px;height:50px;border-radius:17px;background:#e8f5fa;color:#0f739b;font-size:24px;font-weight:900}.feature-card h2{font-size:21px;margin:16px 0 8px}.feature-card p,.category-card p,.test-card p,.page-head p{color:var(--muted);line-height:1.55}.feature-card strong,.category-card strong{color:#0e789f}.info-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:22px;overflow:hidden;margin:20px 0}.info-strip div{background:#fff;padding:18px 22px}.info-strip b,.info-strip span{display:block}.info-strip span{color:var(--muted);margin-top:5px}.page-head{padding:38px 6px 18px}.page-head h1{font-size:clamp(30px,5vw,48px);margin-bottom:8px}.test-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}.test-card{display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px}.test-no{font-size:19px;font-weight:900}.test-card p,.test-card small{grid-column:1/-1;margin:0}.test-ring{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--cyan) var(--p),#e8f0f4 0);position:relative}.test-ring:before{content:"";position:absolute;inset:6px;background:#fff;border-radius:50%}.test-ring span{z-index:1;font-size:12px;font-weight:900}.category-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:15px}.category-card .chapter{display:inline-flex;padding:5px 9px;border-radius:9px;background:#e9f5fa;color:#0d759e;font-size:12px;font-weight:900}.category-card h3{font-size:17px;line-height:1.35;margin:14px 0 8px}.quiz-shell{max-width:960px;margin:28px auto}.quiz-top{display:flex;justify-content:space-between;align-items:end;gap:16px}.quiz-top h1{margin:8px 0;font-size:25px}.source-badge{display:inline-block;background:#fff0c9;color:#775300;border-radius:999px;padding:7px 11px;font-weight:900;font-size:12px}.score-pill{background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 14px;white-space:nowrap}.progress{height:8px;border-radius:8px;background:#dce8ee;overflow:hidden}.progress span{display:block;height:100%;background:linear-gradient(90deg,#1da7b1,#1479a3);border-radius:inherit;transition:width .35s}.quiz-count{text-align:right;color:var(--muted);font-size:13px;margin:6px 2px 12px}.question-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:clamp(18px,4vw,38px);box-shadow:var(--shadow);animation:rise .35s ease}.question-card h2{font-size:clamp(23px,3.2vw,34px);line-height:1.25;margin:18px 0 22px}.media-grid{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin:4px 0 22px}.media-grid figure{margin:0;max-width:100%;background:#fff;border:1px solid #e1eaef;border-radius:17px;padding:7px;box-shadow:0 7px 24px #12334a12}.media-grid img{display:block;max-width:min(100%,680px);max-height:430px;width:auto;height:auto;border-radius:11px;object-fit:contain}.answers{display:grid;gap:12px}.answer{width:100%;display:grid;grid-template-columns:46px 1fr 30px;align-items:center;gap:12px;text-align:left;background:#fbfdfe;border:1px solid #d5e4eb;border-left:5px solid #1682ad;border-radius:18px;padding:14px 16px;color:var(--ink);font-weight:700;line-height:1.45;transition:.18s}.answer:not(:disabled):hover{transform:translateX(3px);background:#f0f9fc}.choice-letter{width:35px;height:35px;border-radius:50%;background:#e8f4f9;color:#0d789f;display:grid;place-items:center;font-weight:900}.answer.correct{border-color:#6fc5a1;border-left-color:var(--green);background:#edf9f3}.answer.wrong{border-color:#ef9aa0;border-left-color:var(--red);background:#fff1f2}.answer em{font-style:normal;font-size:23px}.feedback{margin-top:20px;border-radius:20px;padding:20px;border:1px solid}.feedback.ok{background:#f0fbf6;border-color:#bfe8d5}.feedback.bad{background:#fff4f5;border-color:#f2c4c7}.feedback h3{margin:0 0 10px}.correct-line{margin:6px 0 14px}.explanation{white-space:pre-line;line-height:1.7;color:#344f5f}.feedback-media{margin-top:18px}.next-wrap{text-align:right;margin-top:18px}.primary,.secondary{border:0;border-radius:14px;padding:12px 18px;font-weight:900}.primary{background:linear-gradient(135deg,#117da7,#1ca5b0);color:#fff;box-shadow:0 8px 20px #1785a635}.secondary{background:#eaf2f6;color:#29495c}.result-card{max-width:680px;margin:60px auto;text-align:center;background:#fff;border:1px solid var(--line);border-radius:30px;padding:42px;box-shadow:var(--shadow)}.result-icon{font-size:66px}.big-score{font-size:80px;font-weight:1000;line-height:1}.big-score small{font-size:28px;color:var(--muted)}.result-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:22px}.theory-layout{display:grid;gap:20px}.theory-intro,.theory-list{background:#fff;border:1px solid var(--line);border-radius:25px;padding:clamp(20px,4vw,34px);box-shadow:0 8px 30px #153b540d}.theory-text{white-space:pre-line;line-height:1.78;color:#324c5a}.muted,.empty{color:var(--muted)}.theory-tools{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:16px}.theory-tools input{width:min(380px,100%);border:1px solid #cfe0e8;border-radius:14px;padding:12px 14px;outline:none}.theory-tools input:focus{border-color:#1683aa;box-shadow:0 0 0 3px #1683aa18}.theory-item{border:1px solid var(--line);border-radius:16px;margin:10px 0;overflow:hidden;background:#fbfdfe}.theory-item summary{list-style:none;display:flex;justify-content:space-between;align-items:center;padding:15px 18px;font-weight:900;cursor:pointer}.theory-item summary::-webkit-details-marker{display:none}.theory-item summary b{font-size:22px;color:#1681a8;transition:.2s}.theory-item[open] summary b{transform:rotate(45deg)}.theory-item-body{border-top:1px solid var(--line);padding:18px}.theory-media img{max-height:520px}#license-gate{position:fixed;inset:0;z-index:999;background:radial-gradient(circle at 75% 20%,#2bb5bd44,transparent 27%),linear-gradient(135deg,#082e4d,#0e6685);display:grid;place-items:center;padding:18px;transition:.25s opacity}.license-gate-hidden{opacity:0;pointer-events:none}.license-panel{width:min(470px,100%);background:#fff;border-radius:28px;padding:34px;box-shadow:0 28px 90px #001a2f66;text-align:center}.license-logo{width:64px;height:64px;border-radius:20px;margin:0 auto 12px;display:grid;place-items:center;font-size:31px;background:linear-gradient(135deg,#117ca7,#1baeb0)}.license-eyebrow{font-weight:900;color:#147ba3}.license-panel h1{margin:8px 0}.license-copy,.license-help{color:var(--muted);line-height:1.5}.license-panel form{display:grid;gap:10px;text-align:left;margin-top:22px}.license-panel input{border:1px solid #cbdde6;border-radius:14px;padding:14px;text-transform:uppercase}.license-panel button{border:0;border-radius:14px;padding:14px;background:#117ca7;color:#fff;font-weight:900}.license-status{margin-top:14px}.license-error{color:#bd3540}.license-help{font-size:12px;margin-top:12px}@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}@keyframes drive{0%,100%{transform:translate(-12px,-4px) rotate(-3deg)}50%{transform:translate(18px,5px) rotate(2deg)}}@media(max-width:820px){main{width:min(100% - 18px,1240px)}.topbar{min-height:68px;padding:9px 12px}.brand small{display:none}.brand b{font-size:15px}.brand .logo{width:40px;height:40px}.hero{grid-template-columns:1fr;min-height:auto;padding:28px 22px}.hero h1{font-size:38px}.car-art{height:130px}.car{font-size:68px}.feature-grid,.info-strip{grid-template-columns:1fr}.quiz-top{align-items:flex-start}.question-card{border-radius:20px}.question-card h2{font-size:24px}.answer{grid-template-columns:38px 1fr 24px;padding:13px 12px}.choice-letter{width:32px;height:32px}.media-grid img{max-height:320px}.theory-tools{align-items:stretch;flex-direction:column}.theory-tools input{width:100%}}@media(max-width:480px){.hero h1{font-size:32px}.hero p{font-size:16px}.stats{gap:7px}.stats span{padding:8px 10px}.feature-card,.category-card,.test-card{border-radius:18px;padding:18px}.page-head{padding-top:26px}.page-head h1{font-size:34px}.quiz-shell{margin-top:16px}.score-pill{font-size:13px}.question-card{padding:16px}.question-card h2{font-size:21px}.answer{font-size:15px}.big-score{font-size:64px}.result-card{padding:28px 18px}.media-grid{gap:8px}.media-grid figure{padding:4px;border-radius:12px}.media-grid img{max-height:260px}}

/* AUTO v2.2 — standalone theory reader from PDF pages 1–18 */
.theory-section-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(285px,1fr));gap:16px}.theory-section-card{position:relative;overflow:hidden;border:1px solid var(--line);background:#fff;border-radius:24px;padding:24px;text-align:left;color:var(--ink);box-shadow:0 7px 28px #153b5410;transition:.22s transform,.22s box-shadow,.22s border-color}.theory-section-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#9ecbdc}.theory-code{display:inline-flex;background:#0f7197;color:#fff;border-radius:999px;padding:5px 10px;font-weight:950;font-size:12px;letter-spacing:.04em}.theory-card-icon{position:absolute;right:20px;top:17px;font-size:28px}.theory-section-card h3{font-size:19px;line-height:1.35;margin:17px 0 8px;padding-right:18px}.theory-section-card p{color:var(--muted);line-height:1.55;min-height:72px}.theory-card-meta{display:flex;flex-wrap:wrap;gap:7px;margin:15px 0}.theory-card-meta span{background:#eef6f9;border:1px solid #dae9ef;border-radius:999px;padding:6px 9px;font-size:12px;color:#476475}.theory-section-card strong{color:#0e789f}.theory-reader{display:grid;grid-template-columns:minmax(210px,270px) minmax(0,1fr);gap:20px;align-items:start}.theory-toc{position:sticky;top:94px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 8px 30px #153b540d}.theory-toc h3{margin:0 0 12px}.theory-toc button{width:100%;display:grid;grid-template-columns:34px 1fr;gap:8px;align-items:start;text-align:left;border:0;background:transparent;border-radius:12px;padding:9px 8px;color:#365365;line-height:1.35}.theory-toc button:hover{background:#eef7fa;color:#0d6f94}.theory-toc button span{display:grid;place-items:center;width:28px;height:28px;background:#e9f5fa;color:#0d789f;border-radius:9px;font-size:11px;font-weight:900}.theory-chapters{display:grid;gap:18px}.theory-chapter{scroll-margin-top:96px;background:#fff;border:1px solid var(--line);border-radius:26px;padding:clamp(20px,4vw,36px);box-shadow:0 8px 30px #153b540d}.theory-chapter-kicker{color:#0f789e;font-size:12px;font-weight:950;letter-spacing:.04em;text-transform:uppercase}.theory-chapter h2{font-size:clamp(24px,3.2vw,34px);line-height:1.2;margin:9px 0 22px}.theory-book-text{font-family:Georgia,"Times New Roman",serif;color:#273f4d;font-size:17px;line-height:1.78}.theory-book-text p{margin:0 0 15px}.theory-book-text .book-listline{padding-left:14px;border-left:3px solid #cfe6ef}.book-subhead{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;font-size:17px;line-height:1.35;color:#0c526f;margin:22px 0 9px}.theory-detail-head p{max-width:900px}.theory-media{margin-top:24px}.theory-media figure{background:#f9fcfd}.theory-media img{max-height:560px}
@media(max-width:880px){.theory-reader{grid-template-columns:1fr}.theory-toc{position:relative;top:auto}.theory-toc{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:6px}.theory-toc h3{grid-column:1/-1}.theory-book-text{font-size:16px;line-height:1.72}}
@media(max-width:520px){.theory-section-grid{grid-template-columns:1fr}.theory-section-card{padding:19px;border-radius:19px}.theory-section-card p{min-height:0}.theory-chapter{padding:18px 15px;border-radius:19px}.theory-chapter h2{font-size:23px}.theory-book-text{font-size:16px}.theory-toc{grid-template-columns:1fr}}

/* AUTO v2.5 — Free 50 + Premium */
.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 #ffffff30;white-space:nowrap}.access-badge.demo{background:#f6bf4e;color:#4b3500;border-color:#f6bf4e}.access-badge.premium{background:#20a873;color:#fff;border-color:#4bd7a7}.unlock-btn{font-weight:900;background:#ffffff1d}.demo-offer{display:grid;grid-template-columns:1fr 1fr auto;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:16px 20px;margin:0 0 20px;box-shadow:0 7px 28px #153b540c}.demo-offer div{display:grid;gap:3px}.demo-offer b{color:#0f6f96}.demo-offer span{color:var(--muted);font-size:14px}.demo-feature-grid{grid-template-columns:repeat(4,1fr)}.feature-card{position:relative;overflow:hidden}.demo-card{border:2px solid #65c8a1;background:linear-gradient(180deg,#f5fffa,#fff)}.demo-card .feature-icon{background:#dff8ec;color:#11845a;font-size:16px}.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:#1f9b67;color:#fff}.premium-tag{background:#ffe8a8;color:#7d5700}.locked-card{background:linear-gradient(180deg,#fff,#fbfcfd)}.locked-card strong{color:#8b6a13}.premium-price{display:flex;align-items:baseline;justify-content:center;gap:10px;margin:18px 0 12px}.premium-price strong{font-size:42px;color:#0d739a}.premium-price span{color:var(--muted);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 #13946730}.school-offer{margin:15px 0;color:#4a6473;line-height:1.55;font-size:14px}.school-offer a{color:#0d789f;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;height:38px;padding:0!important;border-radius:50%!important;background:#eef4f7!important;color:#496270!important;font-size:26px!important;line-height:1}.license-status{padding:10px 12px;border-radius:12px;background:#eef7fa;line-height:1.45}.license-error{background:#fff0f1;color:#bd3540}.result-card p{line-height:1.6;color:var(--muted)}
@media(max-width:1050px){.demo-feature-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.demo-offer{grid-template-columns:1fr}.demo-feature-grid{grid-template-columns:1fr}.topbar nav{gap:6px;flex-wrap:wrap;justify-content:flex-end}.access-badge{font-size:10px;padding:7px 9px}.unlock-btn{font-size:12px;padding:8px 10px}.lang-badge{display:none}}