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@media(max-width:800px){.hero{padding:26px;min-height:445px;align-items:flex-start}.hero-content{width:100%;padding-top:16px}.hero .page-title{font-size:clamp(38px,7vw,58px)}.hero-art{width:45%;height:190px;top:auto;bottom:0;opacity:.38}.hero .subtitle{max-width:88%;font-size:13px}.hero:before,.hero:after{display:none}.hero-footnote{max-width:70%;line-height:1.6}.hero .action-row{max-width:90%}.hero .btn{font-size:12px}.floating-sign{width:83px;height:83px;padding:8px;border-width:4px;border-radius:12px}.float-0{top:0;right:25%}.float-1{top:38%;right:-10%}.float-2{top:62%;width:67px;height:67px}.art-caption{display:none}.hero-content{z-index:2}.stats-grid{gap:7px}.stat-top{font-size:9px;margin-bottom:10px}.stat-top span{display:none}.stat-value{font-size:24px}.stat-value small{font-size:10px;display:block}.stat-date{font-size:15px;line-height:1.4}.stat-label{font-size:9px;line-height:1.55}.stat{padding:12px}.stat .progress-bar{margin-bottom:0}.section-head h2{font-size:22px}.text-link{font-size:11px}.path-grid{grid-template-columns:1fr}.path-card{min-height:0;padding:20px}.path-card h3{font-size:20px}.path-top{margin-bottom:7px}.path-bottom{margin-top:9px}.group-grid{grid-template-columns:1fr}.group-card{padding:17px}.group-card h3{font-size:14px}.methods{grid-template-columns:1fr;gap:22px;padding:23px}.methods h2{font-size:26px}.detail-card{grid-template-columns:1fr;padding:20px}.detail-image{position:static;height:270px}.detail h1{font-size:33px}.sign-image{height:145px;padding:17px}.sign-card h3{font-size:12px}.sign-meta{font-size:10px}.card-top{font-size:10px}.quiz-setup{grid-template-columns:1fr;padding:23px;gap:28px}.quiz-sign{height:245px;padding:25px}.lesson-card,.quiz-card{padding:20px}.feedback{padding:16px}.feedback h2{font-size:22px}.result-card{grid-template-columns:1fr;padding:27px;gap:0}.result-score{font-size:80px}.error-content{grid-template-columns:1fr;gap:0}.error-content .sign-image{width:160px}.page-footer{margin-top:40px}.toast{bottom:calc(85px + env(safe-area-inset-bottom));left:16px;right:16px}.main{padding-bottom:calc(95px + env(safe-area-inset-bottom))}.transfer{padding:20px}.edition-pill{font-size:9px}.choice{font-size:13px}.catalog-toolbar .select{width:100%}.search{min-width:0;width:100%}.section-head{align-items:start}.section-head .text-link{white-space:nowrap}.bottom-nav a{min-height:58px}.bottom-nav a.active{background:#fff4bc;min-width:58px;border-radius:10px;margin:4px 0}.empty{padding:25px}.page-title{line-height:1.08}}
@media(max-width:360px){.hero{padding:20px}.hero .page-title{font-size:36px}.hero .action-row{max-width:100%}.stats-grid{grid-template-columns:1fr}.stat-value small{display:inline}.sign-grid{grid-template-columns:1fr}.sign-image{height:190px}}

.skip-link{position:fixed;top:10px;left:10px;transform:translateY(-180%);z-index:100;background:var(--yellow);padding:12px 18px;border-radius:10px;font-weight:750}.skip-link:focus{transform:none}#quiz-group{width:100%;max-width:100%;margin-top:10px}.quiz-setup>div,.detail-card>div,.stats-grid>div{min-width:0}

/* Light learning panels must not inherit white from the lesson card. */
.ladder-block,.micro-scenario,.memory,.btn-light{color:var(--ink)}
.learning-ladder .ladder-block .label,.learning-ladder .micro-scenario .label{color:#55594c}
.deeper-explanation>summary{cursor:pointer;font-weight:750;padding:15px 0}
.deeper-explanation[open]{display:grid;gap:12px}
.image-variants{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:12px}
.image-variants .sign-image{height:130px;margin:0;padding:10px}
.comparison-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.comparison-card{min-width:0;padding:22px;background:var(--card);border:1px solid var(--line);border-radius:18px}
.comparison-card .sign-image{height:220px}
@media(max-width:800px){.comparison-grid{grid-template-columns:1fr}}