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@media(max-width:700px){.header{height:77px}.header-inner{padding:0 23px;gap:18px}.header-nav{display:none}.header-right{gap:0}.brand>svg{height:37px;width:37px}.brand>span{font-size:22px}.brand-en{font-size:14px}.language{padding:8px;font-size:14px}.home-main{padding:0 23px}.page-eyebrow{padding-top:26px;font-size:14px}.hero{grid-template-columns:1fr;padding:33px 0 30px;gap:16px}.hero-copy{text-align:center}.hero-copy>.eyebrow{justify-content:center;font-size:14px}.hero h1{font-size:52px;line-height:1.24;margin:20px 0 17px}.hero-description{font-size:14px}.start-btn{min-width:245px;margin-top:22px}.hero-note{justify-content:center;font-size:14px;margin-top:19px}.hero-art{height:230px;max-width:380px;margin:0 auto;width:100%}.hero-art:before{width:85%;aspect-ratio:1.4}.road-scene{width:100%;height:255px;margin:0}.art-label{bottom:0;left:30%;font-size:14px;padding:6px 10px}.art-dash{display:none}.test-summary{padding:18px;grid-template-columns:1fr;gap:15px;border-radius:13px}.test-summary>div{gap:12px}.test-summary>div+div{border-left:0;padding-left:0;padding-top:15px;border-top:1px solid var(--border)}.test-summary>div>span{display:flex;align-items:center;justify-content:space-between;width:100%;gap:10px}.test-summary strong{font-size:14px}.test-summary small{font-size:14px;margin-top:0;text-align:right}.test-summary>div>.icon{height:20px;width:20px}.intro-section{padding:32px 0 25px}.section-heading{margin-bottom:20px;gap:14px}.section-heading h2{font-size:20px}.section-note{display:none}.steps{grid-template-columns:1fr;gap:12px}.steps article{padding:21px 20px 21px 83px;min-height:112px}.step-icon{position:absolute;left:19px;top:25px;padding:11px}.step-icon>.icon{height:22px;width:22px}.step-num{right:18px;top:18px;font-size:20px}.steps h3{margin:0 0 8px;font-size:14px}.steps p{font-size:14px;padding-right:17px}.demo-notice{padding:16px;margin-bottom:25px;gap:10px}.demo-notice p{font-size:14px}.demo-notice strong{font-size:14px}.footer{margin:0 23px;padding:22px 0 25px;gap:12px;flex-wrap:wrap;justify-content:flex-start;font-size:14px}.footer>span:nth-child(2){order:3;width:100%}.footer button{margin-left:auto;font-size:14px}.last-result{padding:17px;gap:12px;flex-wrap:wrap}.last-result strong{font-size:14px}.last-result>.button{font-size:14px;margin-left:48px}.last-icon{padding:9px}.last-icon>.icon{width:18px;height:18px}.quiz-main{padding:26px 23px 40px;min-height:calc(100vh - 200px)}.quiz-top{margin-bottom:20px}.quiz-top>span{font-size:14px}.quiz-meta{font-size:14px}.quiz-meta>span:last-child{max-width:48%;text-align:right}.question-panel{padding-top:31px}.question-panel h1{font-size:23px;line-height:1.6}.question-tag{margin-bottom:15px}.choose-hint{margin:12px 0 20px}.choice{padding:14px;gap:12px;font-size:14px;min-height:67px}.choice-key{width:28px;height:28px}.quiz-bottom{align-items:flex-start;margin-top:26px;padding-top:22px;flex-direction:column;gap:15px}.quiz-bottom>.button{width:100%;justify-content:space-between;padding-left:22px;padding-right:22px}.quiz-bottom>span{font-size:14px}.question-map{margin-top:21px}.map-grid{gap:5px}.map-item{height:28px}.answer-feedback{padding:16px 14px;gap:10px}.answer-feedback h2{font-size:14px}.answer-feedback p{font-size:14px}.answer-feedback small{font-size:14px}.feedback-symbol{width:27px;height:27px}.result-main{padding:35px 23px 40px}.result-hero h1{font-size:25px;line-height:1.5}.result-hero>p{font-size:14px}.finish-badge{height:74px;width:74px;margin-bottom:25px}.result-stats{padding:22px 5px}.result-stats small{font-size:14px}.result-stats strong{font-size:31px}.result-stats em{font-size:14px;margin-left:4px}.result-actions{gap:12px}.result-actions .button{font-size:14px;padding:12px 19px;gap:12px}.review-section{margin-top:35px}.review-section .eyebrow{font-size:14px;letter-spacing:.05em}.review-section h2{font-size:18px}.filter-label{font-size:14px}.review-item summary{padding:15px 12px;gap:10px}.review-item summary strong{font-size:14px}.review-content{padding:0 15px 16px 52px;font-size:14px}.result-hero>.result-note{font-size:14px}dialog{padding:25px}dialog h2{font-size:20px}dialog p{font-size:14px}}
.bilingual{display:block;min-width:0}.english-primary{display:block;font-weight:inherit}.chinese-assist{display:block;font-size:.78em;font-weight:400;line-height:1.75;margin-top:5px;color:#596B69;letter-spacing:0}.question-panel h1 .chinese-assist{font-size:14px;margin-top:11px;line-height:1.8}.choice-text{min-width:0;flex:1}.choice .chinese-assist{font-size:14px;margin-top:4px}.choice.correct .chinese-assist{color:#327352}.choice.incorrect .chinese-assist{color:#9c4d3b}.answer-feedback>div:last-child{min-width:0;flex:1}.correct-answer-label{font-size:14px;font-weight:600;margin-top:16px;display:flex;align-items:center;gap:7px}.correct-answer-label>span{display:inline-flex;align-items:center;justify-content:center;width:21px;height:21px;border-radius:6px;background:#fff9}.correct-answer-text{margin-top:7px;font-size:14px;font-weight:650}.correct-answer-text .chinese-assist{font-size:14px}.answer-evidence{margin-top:18px;padding-top:16px;border-top:1px solid #99999940}.answer-evidence h3{font-size:14px;font-weight:700;margin:0 0 7px}.case-study p{font-size:14px;line-height:1.8}.case-study>small{display:block;margin-top:5px;font-size:14px;opacity:.7}.reference-list{margin-top:16px}.reference-list ol{margin:0;padding-left:17px}.reference-list li{font-size:14px;line-height:1.8;padding-left:3px}.reference-list li+li{margin-top:10px}.reference-list a{color:#091717;text-decoration:underline;text-decoration-color:#596B6980;text-underline-offset:3px;overflow-wrap:anywhere}.reference-list a:hover{text-decoration-color:currentColor}.answer-feedback .reference-list p,.reference-list .reference-locator{font-size:14px;line-height:1.8;margin-top:3px;opacity:.85}.reference-list small{font-size:14px}.answer-feedback .demo-source{margin-top:16px;font-size:14px}.review-item summary strong .chinese-assist{font-size:14px;margin-top:5px}.review-content strong .bilingual{margin-top:5px}.review-content .english-primary{font-size:14px}.review-content .chinese-assist{font-size:14px}.review-content .answer-evidence{padding:14px 0 0}.review-content .case-study p{font-size:14px}.review-content .reference-list p{font-size:14px;margin-top:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.reference-document{max-width:820px;padding:40px 28px;margin:auto}.reference-document>a{font-size:14px;color:var(--accent)}.reference-document h1{font-size:28px;margin:28px 0 18px}.reference-document .lead{color:#596B69;font-size:14px;line-height:1.9}.reference-document article{margin-top:28px;padding:23px;border:1px solid var(--border);border-radius:14px;scroll-margin-top:25px;background:white}.reference-document h2{font-size:18px;margin:0 0 14px}.reference-document p{font-size:14px;line-height:1.9;color:#596B69;margin-top:10px}.reference-document code{background:#f7f7f7;padding:2px 5px;border-radius:4px}.reference-document .doc-meta{font-size:14px;color:#596B69;margin:17px 0}.reference-document .bilingual .english-primary{font-weight:600}.reference-document .bilingual .chinese-assist{font-size:14px}
@media(max-width:700px){.question-panel h1 .chinese-assist{font-size:14px}.choice .chinese-assist{font-size:14px}.answer-evidence h3{font-size:14px}.case-study p{font-size:14px}.reference-list a{font-size:14px}.correct-answer-text{font-size:14px}.review-item summary strong .chinese-assist{font-size:14px}.reference-document h1{font-size:24px}.reference-document article{padding:18px}.reference-document h2{font-size:17px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* Brand actions use a deeper coral gradient for readable white labels. */
.button.primary{background:linear-gradient(100deg,#e61e4d,#d70466);border-color:#d70466;box-shadow:0 3px 0 #b51242}
.button.primary:hover{background:linear-gradient(100deg,#d90b40,#c6005b);box-shadow:0 4px 0 #a60c37}
.button.primary:active{box-shadow:0 1px 0 #a60c37}
.button.primary:disabled{background:#ebebeb;border-color:#ebebeb;box-shadow:0 3px 0 #D5DBD6;color:#596B69}
.green,.nav-current{color:#c51c4d}
.choice.correct{background:#edf7f1}
.choice.selected{background:#fff0f3}
.choice.selected .choice-key{background:#e31c5f;border-color:#e31c5f}
.prototype{color:#596B69}

/* Product-led home: a live practice preview, clear entry points and honest FAQ. */
.landing-main{max-width:1200px}.header-start{min-height:40px;padding:9px 19px;font-size:14px;gap:10px;border-radius:100px}.header-start>.icon{width:16px;height:16px}.header-right{gap:20px}.landing-hero{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center;padding:70px 0 78px}.landing-copy{min-width:0}.landing-badge{display:inline-flex;align-items:center;gap:8px;color:#bd1943;background:#fff0f3;border:1px solid #ffe0e6;border-radius:100px;padding:9px 13px;font-size:14px;font-weight:650;letter-spacing:.015em}.landing-badge>.icon{width:16px;height:16px}.landing-copy h1{font-size:58px;line-height:1.23;font-weight:800;letter-spacing:-.045em;margin:25px 0 24px;color:#222}.landing-copy h1>span{color:#e31c5f}.landing-description{font-size:15px;line-height:1.95;color:#596B69;max-width:455px}.landing-actions{display:flex;gap:20px;align-items:center;margin-top:30px;flex-wrap:wrap}.landing-actions>.button,.landing-final>.button{border-radius:100px;min-height:48px;padding:13px 24px;gap:16px;box-shadow:0 5px 18px #e31c5f1a}.landing-actions>.button:hover,.landing-final>.button:hover{box-shadow:0 7px 22px #e31c5f29}.text-action{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:650;color:#b81743;padding:10px 0}.text-action>.icon{width:15px;height:15px}.text-action:hover{color:#8f0d30;text-decoration:underline}.landing-assurances{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:25px;font-size:14px;color:#596B69}.landing-assurances>span{display:inline-flex;align-items:center;gap:7px}.landing-assurances .icon{height:15px;width:15px;color:#596B69}.landing-demo-note{display:flex;align-items:flex-start;gap:6px;color:#858585;font-size:14px;line-height:1.7;margin-top:17px}.landing-demo-note>.icon{height:13px;width:13px;margin-top:2px}.landing-preview{min-width:0}.product-preview{background:#fff;border:1px solid #ddd;border-radius:23px;box-shadow:0 25px 65px #09171709,0 3px 10px #09171705;overflow:hidden;max-width:500px;margin-left:auto}.preview-chrome{display:flex;align-items:center;gap:11px;border-bottom:1px solid #ebebeb;padding:14px 16px;color:#596B69;font-size:14px}.window-dots{display:inline-flex;gap:5px;flex-shrink:0}.window-dots>i{width:7px;height:7px;background:#e2e2e2;border-radius:50%}.preview-chrome>span:nth-child(2){display:flex;align-items:center;gap:5px}.preview-chrome .icon{height:12px;width:12px;color:#a1a1a1}.live-demo-tag{margin-left:auto;color:#b81743;background:#fff0f3;padding:4px 6px;border-radius:5px;font-size:14px;letter-spacing:.05em;font-weight:650;white-space:nowrap}.preview-stats{display:flex;gap:16px;align-items:center;padding:21px 23px;border-bottom:1px solid #ebebeb;background:#fafafa}.preview-count{width:58px;height:58px;border:4px solid #ffe2e9;border-top-color:#ff385c;border-right-color:#ff385c;border-radius:50%;display:flex;flex-direction:column;justify-content:center;align-items:center;flex-shrink:0}.preview-count>strong{font-size:22px;line-height:1;font-weight:800;letter-spacing:-.05em}.preview-count>span{font-size:14px;margin-top:3px;color:#596B69}.preview-stats>div:last-child>strong{font-size:14px;font-weight:650;line-height:1.6}.preview-stats p{font-size:14px;color:#596B69;line-height:1.8;margin-top:4px}.preview-question{padding:23px}.preview-category{display:flex;align-items:center;gap:6px;font-size:14px;letter-spacing:.01em;color:#b81743;margin-bottom:15px}.preview-category>.icon{height:13px;width:13px}.preview-question h2{font-size:20px;line-height:1.45;letter-spacing:-.015em;font-weight:750;margin:0 0 18px}.preview-question h2 .chinese-assist{font-size:14px;margin-top:8px;color:#596B69}.preview-choices{display:grid;gap:9px}.preview-choice{display:flex;align-items:center;gap:11px;border:1px solid #e5e5e5;border-radius:13px;padding:11px 12px;text-align:left;background:#fff;min-height:58px;transition:border-color .15s,background .15s}.preview-choice>span:nth-child(2){min-width:0;flex:1}.preview-letter{width:25px;height:25px;background:#f5f5f5;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;color:#596B69;flex-shrink:0}.preview-choice .english-primary{font-size:14px;font-weight:600}.preview-choice .chinese-assist{font-size:14px;color:#596B69;margin-top:3px}.preview-choice>.icon{height:15px;width:15px}.preview-choice:hover{background:#fff8f9;border-color:#e6a7b6}.preview-choice.is-correct{background:#eef8f2;border-color:#8ab79b;color:#176b47}.preview-choice.is-correct .preview-letter{background:#287a51;color:#fff}.preview-choice.is-incorrect{background:#fff2ee;border-color:#dfaa9c;color:#9c3c23}.preview-choice.is-incorrect .preview-letter{background:#c4492b;color:#fff}.preview-feedback{display:flex;align-items:flex-start;gap:8px;margin-top:17px;color:#596B69;font-size:14px;line-height:1.8;min-height:38px}.preview-feedback>.icon{width:15px;height:15px;margin-top:2px}.preview-feedback strong{font-size:14px;display:block;margin-bottom:3px}.preview-feedback.correct{color:#176b47}.preview-feedback.incorrect{color:#9c3c23}.preview-feedback a{display:inline-block;font-size:14px;color:inherit;margin-top:5px;text-underline-offset:3px}.preview-bottom{display:flex;align-items:center;justify-content:center;gap:6px;border-top:1px solid #ebebeb;background:#fafafa;color:#596B69;font-size:14px;padding:12px}.preview-bottom>.icon{width:12px;height:12px}.landing-section-heading{text-align:center;margin:0 auto 32px}.landing-section-heading .eyebrow{justify-content:center;color:#b81743;font-size:14px}.landing-section-heading h2{font-size:30px;letter-spacing:-.025em;line-height:1.4;margin-top:12px}.landing-section-heading>p{font-size:14px;color:#596B69;line-height:1.9;margin-top:12px}.landing-how{padding:15px 0 55px;scroll-margin-top:30px}.landing-how .steps article{background:#fff;border-color:#e5e5e5;min-height:205px}.landing-how .steps p{font-size:14px;line-height:1.9}.landing-how .steps h3{font-size:16px}.landing-how .step-icon{border-radius:12px;padding:11px}.landing-faq{padding:50px 0 55px;border-top:1px solid #ebebeb;scroll-margin-top:30px}.faq-items{max-width:780px;margin:auto}.faq-item{border-bottom:1px solid #e5e5e5}.faq-item:first-child{border-top:1px solid #e5e5e5}.faq-item summary{cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:14px;font-weight:600;padding:21px 0;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary>span{width:23px;height:23px;border-radius:50%;background:#f7f7f7;font-size:19px;line-height:1;font-weight:400;color:#596B69;display:flex;justify-content:center;align-items:center;flex-shrink:0;transition:transform .15s}.faq-item[open] summary>span{transform:rotate(45deg);background:#fff0f3;color:#c51c4d}.faq-item>p{font-size:14px;line-height:1.95;color:#596B69;padding:0 35px 21px 0}.landing-final{background:#fff3f5;border:1px solid #ffe3ea;border-radius:20px;padding:35px 38px;display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:28px}.landing-final h2{font-size:25px;line-height:1.5;letter-spacing:-.02em;margin:10px 0}.landing-final p{font-size:14px;line-height:1.8;color:#596B69}.landing-final .eyebrow{color:#b81743;font-size:14px}.landing-final>.button{flex-shrink:0}.landing-main .demo-notice{margin-bottom:26px}.landing-main .restart-note{margin-top:0}
@media(min-width:1450px){.landing-main{max-width:1280px}.landing-hero{gap:80px;padding:80px 0 90px}.landing-copy h1{font-size:66px}.landing-description{font-size:16px;max-width:495px}.product-preview{max-width:530px}.preview-question{padding:26px}.preview-question h2{font-size:22px}.preview-choice{min-height:61px}.preview-choice .english-primary{font-size:14px}.preview-choice .chinese-assist{font-size:14px}}
@media(max-width:1000px){.landing-hero{gap:30px;padding:45px 0 55px}.landing-copy h1{font-size:45px}.landing-description{font-size:14px}.landing-badge{font-size:14px}.landing-actions{gap:15px}.landing-actions>.button{font-size:14px;padding:12px 18px;gap:10px}.text-action{font-size:14px}.landing-assurances{gap:15px;font-size:14px}.preview-chrome{padding:12px}.preview-stats{padding:16px;gap:12px}.preview-question{padding:18px}.preview-question h2{font-size:18px}.preview-stats>div:last-child>strong{font-size:14px}.preview-stats p{font-size:14px}.preview-choice{padding:10px;gap:9px}.preview-choice .english-primary{font-size:14px}.preview-choice .chinese-assist{font-size:14px}.preview-bottom{font-size:14px}.landing-final{padding:28px}.landing-final h2{font-size:23px}.landing-how .steps h3{font-size:14px}.landing-how .steps p{font-size:14px}.landing-final>.button{font-size:14px}}
@media(max-width:700px){.header-right{gap:12px}.header-start{min-height:35px;padding:8px 12px;font-size:14px;box-shadow:none!important}.header-start .icon{display:none}.landing-main{padding:0 23px}.landing-hero{grid-template-columns:1fr;gap:34px;padding:33px 0 40px}.landing-copy h1{font-size:42px;line-height:1.25;margin:21px 0 18px}.landing-badge{font-size:14px;padding:8px 11px}.landing-badge>.icon{width:14px;height:14px}.landing-description{font-size:14px;line-height:1.9;max-width:none}.landing-actions{margin-top:23px;gap:20px}.landing-actions>.button{min-height:45px;font-size:14px;padding:12px 19px}.text-action{font-size:14px}.landing-assurances{margin-top:22px;font-size:14px;gap:22px}.landing-demo-note{font-size:14px;margin-top:13px}.product-preview{margin:0 auto;max-width:480px;border-radius:18px}.preview-chrome{padding:12px 13px}.preview-stats{padding:17px 19px}.preview-stats>div:last-child>strong{font-size:14px}.preview-stats p{font-size:14px}.preview-count{width:52px;height:52px}.preview-count>strong{font-size:20px}.preview-question{padding:20px}.preview-question h2{font-size:20px}.preview-question h2 .chinese-assist{font-size:14px}.preview-choice{padding:11px 12px;min-height:59px}.preview-choice .english-primary{font-size:14px}.preview-choice .chinese-assist{font-size:14px}.preview-bottom{font-size:14px}.landing-section-heading{margin-bottom:24px}.landing-section-heading .eyebrow{font-size:14px}.landing-section-heading h2{font-size:25px;margin-top:10px}.landing-section-heading>p{font-size:14px;margin-top:10px}.landing-how{padding:8px 0 35px;scroll-margin-top:20px}.landing-how .steps article{min-height:118px;padding-top:22px;padding-bottom:22px}.landing-how .steps h3{font-size:14px}.landing-how .steps p{font-size:14px}.landing-faq{padding:35px 0;scroll-margin-top:20px}.faq-item summary{font-size:14px;padding:18px 0}.faq-item>p{font-size:14px;padding:0 20px 18px 0}.landing-final{padding:25px 22px;flex-direction:column;align-items:flex-start;gap:20px;border-radius:16px;margin-bottom:23px}.landing-final h2{font-size:23px}.landing-final p{font-size:14px}.landing-final>.button{min-height:44px;font-size:14px}.header-start{max-width:100px}.landing-main .restart-note{font-size:14px}}

/* Keep the product structure playful: original road buddy and tactile controls. */
.road-buddy{position:relative;width:100%;max-width:425px;margin:19px 0 -15px;min-height:174px}.road-buddy>img{display:block;width:100%;height:auto;max-height:210px;object-fit:contain;object-position:left center}.buddy-bubble{position:absolute;right:0;top:0;padding:12px 16px;background:#fff7df;border:2px solid #f0d694;border-radius:18px 18px 18px 4px;box-shadow:0 3px 0 #ebd5a2;font-size:14px;font-weight:750;color:#8c6432;transform:rotate(4deg)}.buddy-bubble>span{display:block;font-size:14px;font-weight:500;margin-top:5px;color:#9c7b50}.landing-hero{gap:65px;padding-top:50px;padding-bottom:55px}.landing-copy h1{font-size:56px}.landing-badge{border-width:2px;border-radius:13px;background:#fff0f3;box-shadow:0 3px 0 #f5d8df}.product-preview{border:2px solid #ebdce0;border-radius:26px;box-shadow:0 7px 0 #eedde2,0 20px 45px #51343c09}.preview-chrome{background:#fff7f9;border-bottom:2px solid #f0e5e8}.preview-stats{background:#fffaf4;border-bottom:2px solid #f0e5e8}.preview-count{background:#fff;border-width:5px;transform:rotate(-6deg)}.preview-count>strong,.preview-count>span{transform:rotate(6deg)}.live-demo-tag{background:#ffe5ec;border:1px solid #f5c3cf;border-radius:8px}.preview-question{background:#fff}.preview-choice{border-width:2px;border-radius:17px;box-shadow:0 3px 0 #e9e9e9}.preview-choice:hover{transform:translateY(-1px);box-shadow:0 4px 0 #e8b9c5}.preview-choice:active{transform:translateY(2px);box-shadow:0 1px 0 #e8b9c5}.preview-letter{border-radius:9px;background:#f3f1f6;color:#776b82}.preview-choice.is-correct{box-shadow:0 3px 0 #8ab79b}.preview-choice.is-incorrect{box-shadow:0 3px 0 #dfaa9c}.preview-feedback.correct{background:#edf8ee;padding:11px 12px;border-radius:13px;border:1px solid #d9eadb}.preview-feedback.incorrect{background:#fff3e5;padding:11px 12px;border-radius:13px;border:1px solid #efd9be}.preview-bottom{background:#f7f6fd;border-top:2px solid #efedf5;color:#766d88}.button.primary,.landing-actions>.button,.landing-final>.button{background:#e31c5f;border:2px solid #e31c5f;border-radius:15px;box-shadow:0 5px 0 #ac174b}.button.primary:hover,.landing-actions>.button:hover,.landing-final>.button:hover{background:#ef2e6d;border-color:#ef2e6d;box-shadow:0 6px 0 #ac174b;transform:translateY(-1px)}.button.primary:active,.landing-actions>.button:active,.landing-final>.button:active{transform:translateY(4px);box-shadow:0 1px 0 #ac174b}.button.primary:disabled{background:#ebebeb;border-color:#ebebeb;color:#596B69;box-shadow:0 4px 0 #d5d5d5;transform:none}.header-start{border-radius:13px;box-shadow:0 3px 0 #ac174b}.header-start:hover{box-shadow:0 4px 0 #ac174b}.header .header-start:active{transform:translateY(2px);box-shadow:0 1px 0 #ac174b}.landing-how .steps article{border:2px solid #eee2e5;border-radius:21px;box-shadow:0 5px 0 #f1e5e8}.landing-how .steps article:nth-child(1){background:#fff7fa}.landing-how .steps article:nth-child(2){background:#f3f8ff;border-color:#dfe9f6;box-shadow:0 5px 0 #e5edf8}.landing-how .steps article:nth-child(3){background:#fff9ed;border-color:#f0e4cb;box-shadow:0 5px 0 #f4e9d2}.landing-how .green-bg{background:#ffdce6;color:#cf2258}.landing-how .blue-bg{background:#dcecff;color:#4c83b8}.landing-how .peach-bg{background:#ffe8b7;color:#b4802e}.landing-how .step-icon{border-radius:14px;box-shadow:0 3px 0 #0000000a}.landing-how .step-num{color:#dbc4cd}.landing-how .steps article:nth-child(2) .step-num{color:#bfcee0}.landing-how .steps article:nth-child(3) .step-num{color:#decda6}.faq-item summary>span{background:#fff0f4;border:1px solid #f2d3de;color:#c7416d}.landing-final{border-width:2px;box-shadow:0 5px 0 #f2dce3;border-radius:23px}.choice{border-radius:17px}.answer-feedback{border-radius:17px}.finish-badge{border:2px solid #f3c4d3;box-shadow:0 5px 0 #eac5d1}
@media(min-width:1450px){.landing-copy h1{font-size:62px}.landing-hero{padding-top:55px;padding-bottom:65px}.road-buddy{max-width:445px;margin-top:20px}.road-buddy>img{max-height:215px}}
@media(max-width:1000px){.landing-copy h1{font-size:44px}.landing-hero{gap:30px}.road-buddy{max-width:350px;min-height:160px}.road-buddy>img{max-height:180px}.buddy-bubble{font-size:14px;padding:10px 12px}.buddy-bubble>span{font-size:14px}}
@media(max-width:700px){.landing-copy h1{font-size:42px}.landing-hero{padding-top:31px;padding-bottom:40px;gap:25px}.road-buddy{max-width:360px;min-height:170px;margin:17px auto -4px}.road-buddy>img{max-height:190px}.buddy-bubble{right:0;top:2px;font-size:14px}.buddy-bubble>span{font-size:14px}.header-start{box-shadow:0 3px 0 #ac174b!important}.header-start:active{box-shadow:0 1px 0 #ac174b!important}.product-preview{border-radius:22px}.landing-how .steps article{border-radius:18px}.landing-final{border-radius:19px}.landing-actions>.button,.landing-final>.button{border-radius:14px}}

.chapter-picker{max-width:1120px;margin:12px auto 56px;padding:30px;border:1px solid #e5e5e5;border-radius:24px;background:#fff8f9}.chapter-picker h2{font-size:26px;margin:0 0 12px}.chapter-picker label{display:block;margin-bottom:12px;color:#425553}.chapter-controls{display:flex;gap:16px;align-items:center}.chapter-controls select{flex:1;min-width:0;padding:16px;border:1px solid #ddd;border-radius:12px;background:white;font:inherit;color:#222}.chapter-picker p{font-size:14px;line-height:1.7;color:#596B69}.chapter-picker a{color:#b9193d;font-weight:600}@media(max-width:680px){.chapter-picker{margin:0 20px 32px;padding:22px}.chapter-controls{flex-direction:column;align-items:stretch}.chapter-controls select{width:100%}}

/* Keep the practice controls anchored to the viewport, above device safe areas. */
body.is-testing{padding-bottom:160px}
.quiz-main{padding-bottom:32px}
.quiz-bottom{position:fixed;inset:auto 0 0;z-index:30;margin:0;padding:20px 24px calc(20px + env(safe-area-inset-bottom));background:#fff;border-top:2px solid #e5e5e5;box-shadow:0 -4px 20px #09171708}
.quiz-bottom-inner{width:100%;max-width:1040px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}
.quiz-bottom-inner>.button{min-width:152px;min-height:52px;white-space:nowrap}
.quiz-bottom-center{display:flex;align-items:center;justify-content:center;gap:20px;min-width:0}
.quiz-bottom-center>span{font-size:14px;color:#596B69;line-height:1.6}
.quiz-bottom-center>.button{white-space:nowrap;min-width:150px}
.previous-question .icon{transform:rotate(180deg)}
.button.secondary:disabled{opacity:.45;box-shadow:none}
.choice.selected,.choice.selected:hover:not(:disabled){border-color:#1689d8;background:#eaf6ff;box-shadow:0 3px 0 #1689d8;color:#125c90}
.choice.selected .choice-key{background:#1689d8;border-color:#1689d8;color:#fff}
.selected-dot{border-color:#1689d8}
.choice.correct{border-color:#26945e;box-shadow:0 3px 0 #26945e;background:#eaf8ee;color:#176b47}
.choice.correct .choice-key{background:#23835b;border-color:#23835b;color:#fff}
.choice.incorrect{border-color:#dc4242;box-shadow:0 3px 0 #dc4242;background:#fff0f0;color:#a92222}
.choice.incorrect .choice-key{background:#dc4242;border-color:#dc4242;color:#fff}
.answer-feedback.wrong{background:#fff0f0;color:#a92222}
.preview-choice.is-correct{border-color:#26945e;background:#eaf8ee;color:#176b47}
.preview-choice.is-incorrect{border-color:#dc4242;background:#fff0f0;color:#a92222}
@media(max-width:700px){
 body.is-testing{padding-bottom:190px}
 .quiz-bottom{padding:14px 18px calc(18px + env(safe-area-inset-bottom))}
 .quiz-bottom-inner{display:grid;grid-template-columns:1fr 1fr;gap:12px}
 .quiz-bottom-inner>.button{min-width:0;width:100%;gap:9px;padding:12px}
 .quiz-bottom-center{grid-column:1/-1;grid-row:1;justify-content:space-between;gap:12px;min-height:48px}
 .quiz-bottom-center>.button{min-width:132px;gap:8px;padding:12px}
 .quiz-bottom-center>span{font-size:14px}
 .quiz-meta{gap:14px;align-items:flex-start}
 .quiz-meta>span:last-child{max-width:45%;text-align:right}
 .header-start{white-space:normal}
}

.header{position:sticky;top:0;z-index:40;box-shadow:0 2px 12px #09171706}
html{scroll-padding-top:110px}
.question-panel h1{scroll-margin-top:120px}
.question-tag{color:#146795;font-weight:700;flex-wrap:wrap;gap:10px}
.question-tag>.icon{color:#147eb6;background:#e8f5ff;border-radius:9px;width:34px;height:34px;padding:7px}
.question-tag>span{display:inline-flex;align-items:center;gap:6px;background:#fff1d6;border:1px solid #f1d18d;color:#8a5714;border-radius:9px;padding:6px 10px;letter-spacing:0;font-weight:700}
.question-tag>span>.icon{width:18px;height:18px}
.quiz-bottom-center{flex:1;text-align:center}
.review-skipped .review-status{color:#8a5714;background:#fff1d6}
@media(max-width:700px){html{scroll-padding-top:90px}.quiz-bottom-inner{grid-template-columns:1fr 1fr}.quiz-bottom-center{grid-row:1;justify-content:center;min-height:24px}.question-panel h1{scroll-margin-top:95px}}

/* Shared spacing, containers and responsive grids for the product homepage. */
:root{--page-width:1200px;--section-gap:88px;--card-gap:24px}
.header-inner{max-width:1280px;gap:48px;padding-inline:32px}
.landing-main{width:100%;max-width:var(--page-width);padding-inline:32px}
.landing-hero{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;padding-block:64px}
.landing-copy h1{font-size:clamp(40px,4.5vw,60px);line-height:1.16;letter-spacing:-.035em}
.landing-description{font-size:16px;line-height:1.9;max-width:490px}
.landing-actions{flex-wrap:wrap;gap:24px}
.landing-assurances{flex-wrap:wrap;gap:12px 24px;line-height:1.7}
.road-buddy{margin-top:32px;margin-bottom:0}
.product-preview{width:100%;max-width:540px;margin-left:auto}
.coverage-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;padding:32px;border:1px solid #eadfe3;background:#fffaf6;border-radius:24px;margin-bottom:var(--section-gap)}
.coverage-strip>div{display:flex;align-items:center;gap:16px}.coverage-strip strong{font-size:28px;color:#ad1946;white-space:nowrap}.coverage-strip span{font-size:14px;line-height:1.6;color:#596B69}.coverage-strip>p{grid-column:1/-1;margin:0;padding-top:20px;border-top:1px solid #ecdfda;font-size:14px;line-height:1.8;color:#596B69}
.feature-section,.chapter-section,.landing-how,.roadmap-section,.landing-faq{padding:0;margin:0 0 var(--section-gap);scroll-margin-top:120px}
.landing-section-heading{max-width:720px;margin:0 auto 32px;text-align:center}.landing-section-heading .eyebrow{justify-content:center;color:#ad1946}.landing-section-heading h2{font-size:clamp(26px,3vw,36px);line-height:1.4;margin-top:12px}.landing-section-heading>p{font-size:16px;line-height:1.8;color:#596B69;margin-top:12px}
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.feature-card{padding:32px;border:2px solid #eadfe3;border-radius:24px;box-shadow:0 5px 0 #f0e5e8;background:#fff6f8;min-width:0}.feature-1{background:#f1f8ff;border-color:#dbe8f3;box-shadow:0 5px 0 #e5edf8}.feature-2{background:#fff9eb;border-color:#efe3c9;box-shadow:0 5px 0 #f2ead5}.feature-3{background:#f3f8f3;border-color:#dfebdf;box-shadow:0 5px 0 #e6eee5}
.feature-card-top{display:flex;align-items:center;justify-content:space-between;gap:16px}.feature-icon{display:inline-flex;padding:12px;border-radius:14px;background:#ffffffb0;color:#b51e4b}.feature-card h3{font-size:23px;line-height:1.4;margin:24px 0 12px}.feature-card>p{font-size:16px;line-height:1.9;color:#626262}.feature-caption{margin-top:24px;padding-top:20px;border-top:1px solid #00000012;font-size:14px;color:#425553;font-weight:600}
.status-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:24px;font-size:14px;line-height:1.5;font-weight:650;white-space:nowrap}.status-badge>.icon{width:16px;height:16px}.status-badge.available{background:#fff;color:#226846;border:1px solid #d8e8d9}.status-badge.planned{background:#f2eff8;color:#746184;border:1px solid #e4dcec}
.chapter-section .chapter-picker{max-width:none;margin:0 0 24px;padding:32px}.chapter-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.chapter-card{display:grid;grid-template-columns:auto 1fr;gap:8px 12px;align-content:start;padding:24px;border:1px solid #e5e5e5;border-radius:16px;background:#fff}.chapter-number{grid-row:1/3;font-size:20px;font-weight:750;color:#b51e4b}.chapter-card h3{font-size:16px;line-height:1.6}.chapter-card>span:last-child{font-size:14px;line-height:1.6;color:#596B69}.chapter-card.coming{background:#fafafa}.chapter-card.coming .chapter-number{color:#888}.coverage-note{font-size:14px;color:#596B69;line-height:1.8;margin-top:20px}
.landing-how .steps{gap:24px}.landing-how .steps article{padding:32px}.landing-how .steps h3{font-size:20px;margin:20px 0 12px}.landing-how .steps p{font-size:16px;line-height:1.8}
.roadmap-section{background:#faf8fc;padding:40px;border-radius:24px;border:1px solid #ebe5ef}.roadmap-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.roadmap-grid article{min-width:0}.roadmap-grid h3{display:flex;align-items:flex-start;gap:8px;font-size:18px;line-height:1.6;margin:20px 0 12px}.roadmap-grid h3>.icon{margin-top:3px;color:#9475a6}.roadmap-grid p{font-size:16px;line-height:1.8;color:#596B69}
.landing-faq{border-top:none}.faq-items{max-width:840px;margin:auto}.faq-item summary{font-size:16px;padding:24px 0}.faq-item p{font-size:16px;line-height:1.9}.landing-final{padding:40px;margin-bottom:32px}.landing-final h2{font-size:28px}.landing-final p{font-size:16px}.footer{max-width:1136px;flex-wrap:wrap;line-height:1.8;padding:24px 0 32px}
.result-stats.detailed-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:0}.stat-correct strong{color:#23835b}.stat-incorrect strong{color:#ba3030}.stat-skipped strong{color:#8a681e}.result-actions{flex-wrap:wrap}.result-total{font-size:14px;color:#596B69;line-height:1.8;margin-top:20px}
@media(max-width:1023px){:root{--section-gap:64px}.header-inner{gap:24px;padding-inline:24px}.header-nav{gap:20px}.header-right{gap:12px}.landing-main{padding-inline:24px}.landing-hero{gap:32px;padding-block:48px}.landing-description{font-size:16px}.landing-actions{gap:20px}.coverage-strip{padding:24px;gap:16px}.coverage-strip>div{flex-direction:column;align-items:flex-start;gap:8px}.chapter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-card{padding:24px}.roadmap-section{padding:32px}.roadmap-grid{grid-template-columns:1fr}.roadmap-grid article+article{padding-top:24px;border-top:1px solid #e5dfeb}.landing-how .steps article{padding:24px}.landing-how .steps{gap:16px}}
@media(max-width:767px){:root{--section-gap:48px}.landing-main{padding-inline:20px}.landing-hero{grid-template-columns:1fr;gap:32px;padding-block:32px 40px}.landing-copy h1{font-size:42px}.landing-copy .landing-badge{font-size:14px;line-height:1.5}.landing-actions{gap:16px}.product-preview{margin:auto;max-width:540px}.road-buddy{max-width:360px;margin:24px auto 0}.coverage-strip{padding:24px 20px;gap:16px}.coverage-strip strong{font-size:24px}.coverage-strip span{overflow-wrap:anywhere}.feature-grid{grid-template-columns:1fr;gap:20px}.feature-card{padding:24px}.feature-card h3{font-size:22px}.chapter-section .chapter-picker{padding:24px;margin:0 0 20px}.chapter-controls{flex-direction:column;align-items:stretch}.chapter-controls select{width:100%}.chapter-grid{gap:12px}.chapter-card{display:block;padding:16px}.chapter-number{display:block;margin-bottom:8px}.chapter-card h3{margin-bottom:8px}.chapter-card>span:last-child{display:block}.landing-how .steps{display:grid;grid-template-columns:1fr;gap:20px}.landing-how .steps article{display:block;padding:24px;min-height:0}.landing-how .steps h3,.landing-how .steps p{margin-left:0}.roadmap-section{padding:24px 20px}.landing-final{padding:24px;gap:24px}.landing-final h2{font-size:26px}.landing-final>.button{width:100%}.landing-section-heading h2{font-size:28px}.footer{margin-inline:20px;gap:16px}.result-main{padding-inline:20px}.result-stats.detailed-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 0}.detailed-stats>div:nth-child(3){border-left:0}.result-actions{flex-direction:column;gap:16px}.result-actions .button{width:100%;gap:12px}.header-start{display:none}.header-inner{padding-inline:20px}.header-right{margin-left:auto}.landing-description{font-size:16px}.landing-how .steps p{font-size:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
.preview-count{width:88px;height:88px;min-width:88px;flex-shrink:0;justify-content:center;gap:4px}.preview-count>strong{font-size:28px;line-height:1}.preview-count>span{font-size:14px;line-height:1.4;text-align:center;max-width:70px}.preview-stats{gap:20px;align-items:center}.preview-stats>div:last-child{min-width:0}
@media(max-width:767px){.preview-stats{padding:20px;gap:16px}.coverage-strip{grid-template-columns:repeat(3,minmax(0,1fr))}.feature-card-top{flex-wrap:wrap}}