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@media(max-width:930px){.nav-links{gap:12px}.nav-links a{font-size:11px}.brand{min-width:180px}.hero-grid{gap:20px}.hero-copy h1{font-size:38px}.catalog-layout{grid-template-columns:190px 1fr}}@media(max-width:750px){.nav-links{display:none}.mobile-only{display:block}.main-nav{height:68px}.brand{min-width:0}.brand img{width:47px;height:47px}.brand strong{font-size:12px}.brand small{font-size:8px}.nav-actions{gap:5px}.nav-actions .btn-sm{font-size:10px;padding:6px 10px;min-height:35px}.icon-button{width:35px;height:35px}.user-chip{display:none}.hero-grid{grid-template-columns:1fr;padding:44px 0 70px}.hero-copy{text-align:center}.hero-copy h1{font-size:35px}.hero-copy p{font-size:12px;margin:auto}.hero-actions,.hero-trust{justify-content:center}.hero-widget{max-width:400px;margin:auto;width:100%}.float-badge{bottom:4px}.feature-grid{grid-template-columns:1fr;gap:13px;padding:19px 0}.feature-grid>div{justify-content:flex-start}.section-block{padding:45px 0}.section-header h2,.page-title h1{font-size:26px}.catalog-layout{grid-template-columns:1fr}.sidebar{padding:13px}.sidebar h3{display:none}.side-item{width:auto;display:inline-flex;margin:3px}.sidebar .help-small{display:none}.course-grid,.exam-list,.major-cards{grid-template-columns:1fr}.catalog-top{align-items:stretch;flex-direction:column}.catalog-top input{width:100%}.cta{flex-direction:column;text-align:center;padding:28px 20px}.course-hero{padding:25px}.course-hero h1{font-size:22px}.course-hero .course-symbol{display:none}.admin-stats{grid-template-columns:repeat(3,1fr)}.admin-stats .stat-card{padding:11px}.admin-stats .stat-card strong{font-size:21px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-end{flex-direction:column;text-align:center}.about-layout{grid-template-columns:1fr}.about-layout img{max-width:300px;margin:auto}.field-grid{grid-template-columns:1fr}.quiz-card,.result-card{padding:19px}.quiz-question{font-size:16px}.admin-heading{display:block}.topline-inner span:last-child{display:none}}@media(max-width:420px){.container{width:calc(100% - 26px)}.hero-copy h1{font-size:30px}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}.hero-widget{padding:8px}.app-preview{padding:17px}.widget-numbers small{font-size:8px}.quiz-controls{flex-direction:column}.quiz-controls .btn{width:100%}}