@charset "UTF-8";
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@media(min-width:1440px){.main{padding-left:54px;padding-right:54px}.hero{gap:42px}}
@media(max-width:1100px){.shell{grid-template-columns:224px minmax(0,1fr)}.sidebar{padding-left:26px;padding-right:20px}.main{padding-left:30px;padding-right:30px}.hero h1{font-size:38px}.note-sheet{width:225px;padding:20px}.note-visual:before{width:235px;height:235px}.sheet-title{font-size:20px}.note-sticker{right:-6px}.hero{gap:14px}.progress-card{gap:15px;padding:20px}.topbar-inner{padding:0 26px}}
@media(max-width:880px){.sidebar{display:none}.shell{display:block}.main{max-width:780px;margin:auto;padding:25px 26px}.topbar{height:72px}.topbar-inner{padding:0 24px}.brand-name{font-size:22px}.brand-sub{font-size:9px}.course-label{display:none}.hero h1{font-size:40px}.mobile-course{display:block;margin-bottom:22px;background:#fff;border:1px solid var(--line);border-radius:11px;overflow:hidden}.mobile-course summary{padding:13px 16px;font-size:12px;cursor:pointer;min-height:48px}.mobile-course summary span{float:right;color:#799264;margin-right:8px}.mobile-course nav{padding:8px 17px 15px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:0 13px}.mobile-course .step-link{font-size:12px}.mobile-course .overview{grid-column:1/-1;margin:0 0 10px}.breadcrumb{margin-bottom:19px}.note-sticker{right:2px}.lesson-header h1{font-size:32px}.side-sticky{position:static}}
@media(max-width:580px){body{font-size:15px}.topbar-inner{padding:0 19px}.topbar{height:70px}.brand-mark{width:29px;height:29px}.brand{gap:8px}.brand-name{font-size:21px}.brand-sub{font-size:8px;letter-spacing:.8px}.share{min-height:42px;padding:9px 12px;font-size:11px}.share svg{width:14px}.main{padding:22px 19px 28px}.hero{display:block;margin-bottom:25px;position:relative}.hero-copy>p{max-width:350px;font-size:13px;margin-top:18px;padding-right:8px}.hero h1{font-size:39px;line-height:1.25}.eyebrow{font-size:9px;margin-bottom:14px;letter-spacing:1.05px}.hero-meta{font-size:10px;gap:12px;margin-top:17px}.note-visual{display:none}.breadcrumb{font-size:10px;margin-bottom:23px}.progress-card{padding:20px;display:block;margin-bottom:29px}.progress-heading strong{font-size:14px}.progress-card .btn{margin-top:17px;width:100%;min-height:46px}.progress-foot{font-size:10px}.section-heading{margin-bottom:13px}.section-heading h2{font-size:18px}.section-heading span{font-size:10px}.course-grid{grid-template-columns:1fr;gap:10px}.course-card{padding:17px 18px}.card-top{margin-bottom:8px}.course-card h3{font-size:16px}.course-card p{font-size:12px}.card-bottom{margin-top:11px}.howto{grid-template-columns:1fr;gap:14px;margin-top:25px;padding-top:21px}.how-item{font-size:12px}.how-item strong{font-size:13px;margin-bottom:2px}.footer{font-size:10px}.footer-top{align-items:flex-start;gap:9px}.footer-top>span{max-width:230px}.lesson-header h1{font-size:28px;line-height:1.45}.lesson-subtitle{font-size:13px}.lesson-intro{font-size:14px;padding:19px 20px;margin-bottom:21px}.concept{padding:20px 18px;gap:12px}.concept h2{font-size:16px}.concept p{font-size:13px;line-height:1.95}.concepts{gap:10px;margin-bottom:20px}.example{padding:20px 18px}.example-before{font-size:12px;padding:12px}.example-after{font-size:13px;padding:13px}.example-note{font-size:11px}.takeaway{font-size:15px;padding:10px 12px 22px}.practice{padding:17px 19px}.practice p{font-size:12px}.lesson-actions{display:block}.lesson-actions p{margin-bottom:15px}.lesson-actions .btn{width:100%}.quiz-card{padding:23px 18px;border-radius:16px}.quiz-card h2{font-size:20px;line-height:1.65;margin-bottom:20px}.option{padding:14px 13px;gap:9px;font-size:13px;min-height:64px;flex-wrap:wrap}.option .choice-badge{margin-left:27px;font-size:10px}.option-text{min-width:calc(100% - 38px)}.quiz-submit{display:block;margin-top:21px}.quiz-submit small{display:block;margin-bottom:10px}.quiz-submit .btn{width:100%}.feedback{padding:17px 15px}.feedback p{font-size:13px}.feedback .btn{font-size:12px;padding-left:10px;padding-right:10px}.quiz-meta{font-size:10px}.quiz-tools .btn{font-size:11px}.gate-note{font-size:10px;line-height:1.8}.mobile-course nav{grid-template-columns:1fr}.result-hero h1{font-size:28px}.result-hero p{font-size:13px}.score-number{font-size:34px}.score-number small{font-size:15px}.score-panel{padding:23px 15px}.result-row{padding:15px}.result-row h3{font-size:13px}.result-row p{font-size:10px}.result-row a{font-size:10px}.mini-score{font-size:12px}.final-actions{display:grid;grid-template-columns:1fr}.result-review{padding:18px}.toast{bottom:calc(20px + env(safe-area-inset-bottom));font-size:12px}dialog{padding:23px}.actions{flex-direction:column}.actions .btn{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}