@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Manrope:wght@400;500;600;650;700;750;800&display=swap');
:root{--ink:#253d35;--muted:#748078;--paper:#faf9f6;--line:#e3e5df;--accent:#d75c3c;--sage:#edf1e9;--green:#335745;--peach:#f4e9df}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'DM Sans',sans-serif;font-size:15px}button,input,select{font:inherit}button,a,input,select{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #d75c3c;outline-offset:4px}button:disabled{cursor:default}header{max-width:1440px;margin:auto;padding:26px 56px;display:flex;align-items:center;gap:40px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;min-width:255px}.brand-mark{background:var(--accent);color:#fff;border-radius:12px;width:42px;height:42px;font-weight:800;font-size:29px;line-height:42px;text-align:center;letter-spacing:-3px}.brand-mark span{font-size:18px}.brand a{font-family:Manrope,sans-serif;font-weight:800;font-size:21px;letter-spacing:-.8px}.brand-light{font-weight:400}.brand small{display:block;font-family:'DM Sans',sans-serif;letter-spacing:2px;font-size:8px;color:var(--muted);margin-top:3px}nav{display:flex;gap:30px;margin:auto}nav a{font-size:14px;color:var(--muted);padding:8px 0;position:relative}nav a.active{color:var(--ink);font-weight:650}nav a.active:after{content:'';height:3px;background:var(--accent);border-radius:2px;position:absolute;bottom:-26px;left:0;right:0}.progress-btn{background:transparent;border:1px solid var(--line);border-radius:30px;padding:10px 15px;display:flex;gap:9px;align-items:center;font-size:12px;white-space:nowrap}.progress-dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}#headerProgress{background:var(--sage);border-radius:50%;min-width:21px;line-height:21px}main{max-width:1328px;margin:auto;padding:0 36px}.hero{display:grid;grid-template-columns:1.05fr 1fr;align-items:center;gap:60px;padding:55px 0 47px}.eyebrow{display:flex;align-items:center;gap:8px;font-size:10px;font-weight:650;letter-spacing:1.9px;text-transform:uppercase;color:var(--green)}.eyebrow:before{content:'';width:6px;height:6px;background:var(--accent);border-radius:50%}h1,h2,h3{font-family:Manrope,sans-serif;margin:0}h1{font-size:clamp(34px,4.5vw,58px);font-weight:750;line-height:1.12;letter-spacing:-2.6px;margin:20px 0}h1 em{font-style:normal;color:var(--accent)}.hero p{color:var(--muted);font-size:15px;line-height:1.8;max-width:420px;margin-bottom:25px}.actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}.btn{border:0;border-radius:8px;padding:13px 20px;background:var(--green);color:white;display:inline-flex;align-items:center;justify-content:center;gap:22px;font-size:13px;font-weight:600;transition:transform .15s,background .15s}.btn:hover{background:#244435;transform:translateY(-2px)}.btn.orange{background:var(--accent)}.btn.secondary{background:#fff;border:1px solid var(--line);color:var(--ink)}.text-link{background:none;border:0;font-size:12px;display:inline-flex;gap:9px;padding:8px 0}.hero-art{background:#edf0e7;min-height:330px;border-radius:18px;padding:24px 27px;position:relative;overflow:hidden;background-image:radial-gradient(#83988127 .8px,transparent .8px);background-size:17px 17px}.art-top{display:flex;justify-content:space-between;font-size:10px;letter-spacing:1.5px;align-items:center}.tiny-badge{background:#fff8;border:1px solid #d2dacc;border-radius:30px;padding:6px 10px;font-size:9px;letter-spacing:.3px;display:inline-flex;gap:6px;align-items:center}.hero-mass{position:absolute;right:35px;top:65px;font-size:55px;font-family:Manrope,sans-serif;font-weight:750;letter-spacing:-3px}.hero-mass small{font-size:21px;font-weight:500;letter-spacing:0}.hero-art .vehicle{margin-top:45px;height:165px;transform:scale(1.04)}.art-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:8px}.art-bottom strong{font-size:12px}.art-bottom span{font-size:11px;color:#68796d}.art-bottom .axis-count{display:flex;gap:5px}.axis-count i{width:6px;height:6px;background:var(--accent);border-radius:50%}.strip{display:flex;gap:35px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;align-items:center;margin-bottom:42px}.strip-item{display:flex;align-items:center;gap:12px;flex:1}.strip-icon{border:1px solid #dbe1d6;background:var(--sage);border-radius:9px;width:36px;height:36px;display:grid;place-items:center;font-size:17px}.strip-item strong{display:block;font-size:12px;margin-bottom:3px}.strip-item small{font-size:11px;color:var(--muted)}.catalog-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:23px}.section-kicker{font-size:10px;text-transform:uppercase;letter-spacing:1.7px;color:var(--accent);font-weight:650;margin-bottom:9px}h2{font-size:26px;font-weight:750;letter-spacing:-1px}.catalog-title p{font-size:13px;color:var(--muted);margin:8px 0 0}.search{border:1px solid var(--line);border-radius:8px;background:#fff;display:flex;align-items:center;padding:0 12px;width:245px;gap:8px}.search input{width:100%;border:0;background:none;outline:none;padding:11px 0;font-size:12px}.filter-line{display:flex;justify-content:space-between;gap:15px;align-items:center;flex-wrap:wrap;margin-bottom:22px}.chips{display:flex;gap:6px;flex-wrap:wrap}.chip{border:1px solid var(--line);background:transparent;border-radius:7px;padding:9px 12px;font-size:11px;white-space:nowrap}.chip.active{background:var(--green);border-color:var(--green);color:white}.catalog-tools{display:flex;gap:16px;align-items:center;font-size:11px;color:var(--muted)}.toggle-label{display:flex;gap:6px;align-items:center;cursor:pointer}.toggle-label input{accent-color:var(--accent)}.units{display:flex;background:#eeeee8;padding:3px;border-radius:6px}.units button{border:0;background:none;border-radius:4px;padding:4px 7px;font-size:10px}.units button.active{background:white;box-shadow:0 1px 3px #0001;color:var(--ink)}.results-line{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-bottom:13px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.card{background:white;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-4px);box-shadow:0 10px 26px #253d3509}.card-art{background:#f3f3ee;position:relative;padding:20px 15px 0;min-height:148px;cursor:pointer;border:0;width:100%;display:block}.card:nth-child(3n+2) .card-art{background:#f7eee6}.card:nth-child(3n+3) .card-art{background:#edf1ed}.vehicle{display:block;width:100%;height:auto}.card .vehicle{height:131px}.tag{position:absolute;left:15px;top:12px;font-size:8px;font-weight:600;letter-spacing:.2px;border:1px solid #d5ddcf;background:#fff9;border-radius:4px;padding:4px 7px;z-index:1}.bookmark{position:absolute;right:14px;top:12px;background:#fff9;border:0;width:25px;height:25px;border-radius:50%;font-size:15px;z-index:2}.bookmark.saved{color:var(--accent);background:#fff}.card-wrap{position:relative}.card-content{padding:18px 20px}.card-info{display:flex;justify-content:space-between;gap:10px;align-items:center}.card h3{font-size:15px;font-weight:700;letter-spacing:-.3px}.card-sub{color:var(--muted);font-size:10px;margin-top:5px}.mass{font-family:Manrope,sans-serif;font-size:27px;letter-spacing:-1.3px;font-weight:750;white-space:nowrap}.mass small{font-family:'DM Sans',sans-serif;font-size:12px;font-weight:500;color:var(--muted);letter-spacing:0}.mass-scope{display:block;font-family:'DM Sans',sans-serif;font-size:8px;font-weight:500;letter-spacing:0;text-align:right;color:var(--muted);margin-top:3px}.card-bottom{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:15px;padding-top:12px;font-size:10px}.card-bottom span{color:var(--muted)}.card-bottom button{background:none;border:0;padding:0;font-size:10px;font-weight:600;display:flex;gap:12px}.practice-banner{margin:32px 0 24px;background:#e9eee4;padding:25px 28px;border-radius:12px;display:flex;align-items:center;justify-content:space-between;gap:20px}.practice-banner h3{font-size:18px;letter-spacing:-.5px}.practice-banner p{color:var(--muted);font-size:12px;margin:8px 0 0}.source-note{font-size:10px;color:var(--muted);line-height:1.7;padding:10px 0}.source-note a{text-decoration:underline}.source-note strong{color:var(--ink)}footer{max-width:1256px;margin:40px auto 0;padding:25px 0;display:flex;gap:20px;align-items:center;justify-content:space-between;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.footer-brand{font-family:Manrope,sans-serif;font-size:13px;color:var(--ink);font-weight:800}.page-head{padding:45px 0 28px}.page-head h1{font-size:42px;margin:13px 0}.page-head p{color:var(--muted);line-height:1.7}.panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px}.two-col{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;margin-bottom:30px}.panel h3{font-size:18px;margin-bottom:14px}.field{margin-bottom:22px}.field label{display:block;font-size:12px;font-weight:600;margin-bottom:8px}.field select,.field input[type=number]{width:100%;border:1px solid var(--line);padding:12px;background:var(--paper);border-radius:7px;color:var(--ink)}.field input[type=range]{width:100%;accent-color:var(--accent)}.field small{font-size:11px;color:var(--muted);line-height:1.6;display:block;margin-top:7px}.note{background:var(--sage);border-radius:8px;padding:15px;font-size:12px;line-height:1.8;margin-top:18px}.note.warm{background:var(--peach)}.axle-result{text-align:center;padding:20px 0}.axle-result strong{font-family:Manrope,sans-serif;font-size:64px;letter-spacing:-3px;font-weight:750}.axle-result strong small{font-size:23px;color:var(--muted);letter-spacing:0}.axle-result p{font-size:12px;color:var(--muted)}.axle-diagram{display:block;margin:auto;width:100%;max-width:430px;height:170px}.rules{border-collapse:collapse;width:100%;font-size:12px}.rules td,.rules th{text-align:left;padding:13px 12px;border-bottom:1px solid var(--line)}.rules tr.current{background:var(--sage)}.quiz-container{max-width:790px;margin:auto;padding-bottom:35px}.quiz-top{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:13px}.quiz-bar{height:5px;background:#e2e6dd;border-radius:5px;overflow:hidden;margin-bottom:25px}.quiz-bar i{display:block;height:100%;background:var(--accent);transition:width .3s}.quiz-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.quiz-illustration{background:#eef1e9;padding:24px 55px 5px;position:relative}.quiz-illustration .vehicle{max-height:235px}.quiz-body{padding:28px 34px}.quiz-body h2{font-size:23px;line-height:1.4;letter-spacing:-.7px}.quiz-body .subtitle{font-size:12px;color:var(--muted);line-height:1.8}.answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:22px 0}.answer{border:1px solid var(--line);border-radius:8px;background:var(--paper);text-align:left;padding:15px 18px;font-size:20px;font-weight:650;display:flex;gap:17px;align-items:center}.answer span{font-size:10px;border:1px solid var(--line);border-radius:4px;padding:4px 6px;font-weight:500}.answer:not(:disabled):hover{border-color:var(--green);background:var(--sage)}.answer.correct{border-color:#4b8062;background:#eaf2e9}.answer.incorrect{border-color:var(--accent);background:#f9e7df}.quiz-feedback{font-size:13px;line-height:1.8;background:var(--sage);border-radius:8px;padding:16px;margin-bottom:20px}.quiz-feedback.error{background:#f9eae3}.quiz-feedback strong{display:block}.quiz-bottom{display:flex;justify-content:space-between;align-items:center;gap:12px}.quiz-bottom small{font-size:10px;color:var(--muted)}.quiz-setup{max-width:720px;margin:0 auto 35px}.quiz-setup .vehicle{height:185px}.quiz-setup label{display:block;margin-bottom:8px}.quiz-setup select{border:1px solid var(--line);padding:11px;border-radius:7px;background:var(--paper);margin:0 0 24px;width:100%}.summary{text-align:center;padding:35px}.score-big{font-size:74px;font-family:Manrope,sans-serif;color:var(--accent);font-weight:750;letter-spacing:-4px}.summary p{color:var(--muted);line-height:1.8}.summary .actions{justify-content:center;margin-top:23px}.concepts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:25px}.concept h3{margin:15px 0 10px}.concept p{font-size:13px;line-height:1.8;color:var(--muted)}.concept-number{color:var(--accent);font-size:11px;font-weight:600}.weight-bar{display:flex;border-radius:7px;overflow:hidden;height:47px;margin:22px 0}.weight-bar span{display:grid;place-items:center;font-size:11px}.weight-bar span:first-child{background:#cbd8c7}.weight-bar span:last-child{background:#efc8b4}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:10px 0 25px}.stat{background:var(--sage);border-radius:10px;padding:24px}.stat strong{display:block;font-size:36px;font-family:Manrope,sans-serif}.stat small{color:var(--muted);font-size:12px}.empty{text-align:center;padding:45px;grid-column:1/-1;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:16px;padding:35px;width:650px;max-width:calc(100% - 30px);color:var(--ink);background:var(--paper);max-height:90vh}dialog::backdrop{background:#203b3280;backdrop-filter:blur(4px)}.dialog-close{position:absolute;top:12px;right:14px;border:0;background:var(--sage);border-radius:50%;width:31px;height:31px;font-size:22px}.detail-art{background:var(--sage);border-radius:12px;margin:25px 0 18px;padding:10px}.detail-mass{font-size:52px;font-family:Manrope,sans-serif;letter-spacing:-2px}.detail-mass small{font-size:19px;letter-spacing:0}.detail-text{font-size:13px;line-height:1.9;color:var(--muted)}.detail-source{display:block;color:var(--green);font-size:11px;text-decoration:underline;margin:20px 0}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,15px);background:var(--green);color:white;padding:12px 20px;border-radius:9px;font-size:12px;opacity:0;pointer-events:none;transition:.2s;z-index:20}.toast.show{opacity:1;transform:translate(-50%,0)}.skip{position:absolute;top:-100px}.skip:focus{top:10px;left:10px;padding:10px;background:#fff;z-index:100}.saved-filter.active{color:var(--accent)}.formula{font-family:Manrope,sans-serif;font-size:25px;letter-spacing:-.5px;padding:10px 0}.norm-list p{font-size:13px;line-height:1.9;color:var(--muted)}.norm-list h3{margin-top:25px}.norm-list a{text-decoration:underline}.is-hidden{display:none!important}@media(min-width:1500px){main{padding:0 20px}}@media(max-width:1000px){header{padding:22px 30px;gap:15px}.brand{min-width:210px}nav{gap:20px}.hero{gap:30px}.hero-art{min-height:320px}.cards{grid-template-columns:repeat(2,1fr)}footer{margin-left:36px;margin-right:36px}.strip{gap:20px}.concepts{grid-template-columns:1fr}.two-col{grid-template-columns:1fr 1fr}}@media(max-width:720px){header{padding:18px 20px;flex-wrap:wrap;justify-content:space-between;gap:20px}.brand{min-width:0}.brand a{font-size:18px}.brand-mark{width:35px;height:35px;line-height:35px;font-size:25px}.progress-btn{font-size:10px;padding:8px 10px}nav{order:3;width:100%;justify-content:space-between;gap:10px}nav a{font-size:12px}nav a.active:after{bottom:-19px}main{padding:0 20px}.hero{grid-template-columns:1fr;padding:32px 0;gap:27px}h1{font-size:43px;letter-spacing:-1.8px}.hero p{font-size:14px}.hero-art{min-height:290px;padding:20px}.hero-mass{top:53px}.hero-art .vehicle{margin-top:37px;height:163px}.strip{margin-bottom:30px;gap:18px;flex-wrap:wrap;padding:18px 0}.strip-item{min-width:40%}.strip-item:last-child{display:none}.catalog-title{align-items:start;gap:20px;flex-direction:column}.catalog-title h2{font-size:24px}.search{width:100%}.cards{grid-template-columns:1fr 1fr;gap:12px}.card-art{padding:25px 7px 0;min-height:112px}.card .vehicle{height:88px}.card-content{padding:13px}.card-info{align-items:start;flex-direction:column;gap:9px}.card h3{font-size:13px}.mass{font-size:25px}.mass-scope{text-align:left}.tag{font-size:7px;left:9px;top:9px;padding:3px 5px}.bookmark{right:8px;top:7px;width:22px;height:22px}.card-bottom{font-size:9px;gap:5px}.card-bottom button{font-size:9px;gap:4px}.chip{font-size:10px;padding:8px 10px}.catalog-tools{width:100%;justify-content:space-between}.practice-banner{padding:22px;align-items:start;flex-direction:column}.practice-banner h3{font-size:17px}.practice-banner .btn{width:100%}.two-col{grid-template-columns:1fr}.panel{padding:22px}.page-head h1{font-size:34px;letter-spacing:-1.3px}.quiz-illustration{padding:22px 14px 4px}.quiz-body{padding:22px}.quiz-body h2{font-size:20px}.answer{padding:14px 12px;font-size:18px;gap:10px}.quiz-bottom{align-items:start;flex-direction:column}.quiz-bottom .btn{width:100%}.stat-grid{gap:9px}.stat{padding:15px}.stat strong{font-size:28px}.stat small{font-size:10px}footer{margin:30px 20px 0;flex-wrap:wrap;padding:20px 0;gap:14px}footer span{display:none}dialog{padding:27px 22px}.detail-mass{font-size:44px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* Responsive layouts and comfortable touch controls. */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
.hero>*,.two-col>*,.concepts>*,.cards>*,.stat-grid>*{min-width:0}
.vehicle{max-width:100%}
@media(max-width:720px){
 header{padding:16px;gap:12px}
 .brand{gap:9px}.brand-mark{flex-shrink:0}.brand a{font-size:17px}
 .progress-btn{min-height:44px;font-size:11px;padding:9px 11px;gap:6px}
 nav{gap:4px}nav a{display:flex;min-height:44px;flex:1;align-items:center;justify-content:center;font-size:13px;padding:8px 4px}nav a.active:after{bottom:-16px}
 main{padding:0 16px}
 h1{font-size:clamp(34px,8vw,43px);letter-spacing:-1.6px}
 .hero{padding:26px 0;gap:22px}.hero p{line-height:1.7;margin:16px 0 20px}
 .eyebrow{font-size:10px;letter-spacing:1.2px;line-height:1.7}.eyebrow:before{flex-shrink:0}
 .hero .actions{gap:10px}.hero .actions .btn{flex:1}.hero .actions .text-link{min-height:44px;padding:10px 6px}
 .hero-art{padding:18px;min-height:260px}.art-top{gap:12px;font-size:9px;letter-spacing:.8px}.art-top>span:first-child{max-width:55%;line-height:1.6}.art-top .tiny-badge{white-space:nowrap;flex-shrink:0;font-size:8px;padding:6px 8px}
 .hero-mass{top:64px;right:24px;font-size:48px}.hero-art .vehicle{margin-top:50px;height:auto;transform:none}.art-bottom{gap:12px;margin-top:6px}.art-bottom>div:first-child{min-width:0}.axis-count{flex-shrink:0}
 .strip-item{min-width:100%}.strip-item strong{font-size:13px}.strip-item small{font-size:12px}.strip-icon{flex-shrink:0}
 .search{min-height:48px}.search input{min-width:0;font-size:16px;padding:12px 0}
 .filter-line{gap:12px}.chips{gap:8px}.chip{font-size:12px;min-height:44px;padding:10px 12px}
 .catalog-tools{flex-wrap:wrap;gap:8px 12px;font-size:12px}.toggle-label{min-height:44px;font-size:13px;line-height:1.6}.toggle-label input{width:19px;height:19px;flex-shrink:0}.saved-filter{font-size:12px;min-height:44px;padding:10px 4px}
 .units button{min-height:38px;min-width:38px;font-size:12px}.results-line{gap:12px;flex-wrap:wrap;font-size:11px;line-height:1.6}
 .bookmark{width:44px;height:44px;right:10px;top:8px;font-size:21px}.card-art{padding:48px 12px 2px}.tag{font-size:10px;left:12px;top:15px;padding:5px 8px;max-width:calc(100% - 72px)}
 .card-content{padding:16px}.card h3{font-size:16px}.card-sub{font-size:12px;line-height:1.6}.mass{font-size:30px}.mass-scope{font-size:10px}.card-bottom{align-items:center;font-size:12px;margin-top:12px;padding-top:6px}.card-bottom button{min-height:44px;font-size:12px;gap:8px;padding:8px 0}
 .practice-banner p{font-size:13px;line-height:1.7}.btn{min-height:48px;font-size:14px;padding:13px 18px}.btn:hover,.card:hover{transform:none}
 .page-head{padding:28px 0 20px}.page-head h1{font-size:clamp(30px,8vw,36px);line-height:1.2}.page-head p{font-size:14px}
 .panel{padding:20px}.panel h3{line-height:1.4}
 .field label{font-size:14px;line-height:1.5}.field select,.field input[type=number],.quiz-setup select{font-size:16px;min-height:48px;min-width:0;max-width:100%}.field input[type=range]{height:44px}.field small{font-size:12px}
 .quiz-setup .vehicle{height:auto;margin:2px 0 16px}.quiz-setup label{font-size:14px}.quiz-setup .btn{width:100%}.quiz-setup select{margin-bottom:22px}.detail-text,.quiz-setup .detail-text{font-size:14px;line-height:1.75}
 .quiz-top{align-items:center;gap:10px;flex-wrap:wrap}.quiz-top .text-link{min-height:44px;padding:10px 4px}.quiz-bar{margin-bottom:18px}.quiz-illustration{padding:18px 10px 4px}.quiz-illustration .vehicle{max-height:none;height:auto}
 .quiz-body{padding:20px 16px}.quiz-body h2{font-size:21px;line-height:1.5;letter-spacing:-.5px}.quiz-body .subtitle{font-size:13px;line-height:1.7}.answer-grid{gap:10px;margin:18px 0}.answer{min-height:58px;font-size:20px;padding:14px 12px;gap:10px}.answer span{font-size:11px}.quiz-bottom small{font-size:12px;line-height:1.6}.quiz-feedback{font-size:14px;padding:14px;overflow-wrap:anywhere}
 .note{font-size:13px;line-height:1.75;overflow-wrap:anywhere}.source-note{font-size:12px;line-height:1.8;overflow-wrap:anywhere}.rules{font-size:13px;table-layout:fixed}.rules td,.rules th{padding:12px 8px;overflow-wrap:anywhere;vertical-align:top}.rules td:last-child,.rules th:last-child{width:35%}
 .stat-grid{gap:8px}.stat{padding:16px 12px}.stat strong{font-size:28px}.stat small{font-size:12px}.stat strong small{font-size:11px}
 dialog{width:calc(100% - 24px);max-width:calc(100% - 24px);max-height:calc(100dvh - 24px);padding:56px 20px 24px;overflow:auto;overscroll-behavior:contain}.dialog-close{width:44px;height:44px;top:8px;right:8px;position:sticky;float:right;margin-top:-48px;margin-right:-12px;z-index:3;background:#e5ebe0;font-size:25px}.detail-art{margin:20px 0 16px;padding:4px}.detail-mass{font-size:40px;line-height:1.4}.detail-mass small{font-size:15px}.detail-source{min-height:44px;font-size:13px;line-height:1.6;padding:10px 0}.actions .btn{max-width:100%;gap:12px}dialog .actions{gap:10px}dialog .actions .btn{width:100%}
 .toast{max-width:calc(100% - 32px);width:max-content;white-space:normal;text-align:center;bottom:max(18px,env(safe-area-inset-bottom));font-size:13px;line-height:1.6}
 footer{margin:28px 16px 0;font-size:12px;gap:12px}.footer-brand,footer>a:last-child{min-height:44px;display:flex;align-items:center}.footer-brand{font-size:14px}
 .timber-comparison{font-size:12px;line-height:1.6;flex-direction:row;flex-wrap:wrap;gap:4px 12px}.timber-context{font-size:13px}
}
@media(max-width:560px){
 .cards{grid-template-columns:1fr;gap:18px}.card .vehicle{height:auto;min-height:100px}.card-info{flex-direction:row;align-items:center;gap:12px}.card-info>div:first-child{min-width:0;flex:1}.mass-scope{text-align:right}
 .stat-grid{grid-template-columns:1fr}.stat{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:16px 18px}.stat>small{text-align:right}
 .hero .actions .btn,.hero .actions .text-link{width:100%;justify-content:center;flex:auto}.hero .actions{gap:4px}
 .concepts .panel{padding:20px}.summary{padding:24px 18px}.summary .actions .btn{width:100%}.score-big{font-size:62px}
}
@media(max-width:380px){
 .brand{gap:8px}.brand a{font-size:16px}.brand small{font-size:7px;letter-spacing:1.5px}.brand-mark{width:32px;height:32px;line-height:32px;font-size:23px}.progress-btn{font-size:10px;padding:8px;gap:5px}header{gap:10px}
 .art-top{font-size:8px;gap:6px}.art-top .tiny-badge{font-size:7px;padding:5px 6px}.art-bottom strong{font-size:11px}.art-bottom span{font-size:10px}
 .quiz-body{padding:18px 14px}.answer{gap:8px;padding:12px 10px}.catalog-tools{font-size:11px}.catalog-tools .toggle-label{font-size:12px}
}