/* Phone layer: same curriculum/data, larger touch targets, no desktop scaling. */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-bottom:96px}
.lesson-title,.lesson-title>div,.learn-copy,.catalog-focus>div,.modal-top>h2{min-width:0}
.word-caption{flex-wrap:wrap}
.listen svg{flex-shrink:0}
.mobile-nav-icon{display:none}
.modal-sheet{overscroll-behavior-y:contain}
.overlay{top:var(--visual-top,0px);bottom:auto;height:100%;height:var(--visual-height,100vh)}
.modal-sheet{max-height:calc(100vh - 36px);max-height:calc(var(--visual-height,100vh) - 36px)}
.trace-wrap,.trace-wrap canvas{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.trace-tools button{flex:1;white-space:nowrap}
.audio-sheet select,.audio-upload input{font-size:16px}
.audio-sheet .audio-help,.audio-sheet .audio-privacy{overflow-wrap:break-word}
.parent-copy a{color:var(--green);text-underline-offset:3px}
.site-footer a{color:var(--muted);font-size:12px;padding:10px;display:inline-block}
@media(max-width:620px){
 body{padding-bottom:78px;padding-bottom:calc(78px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom,0px)))}
 .topbar{padding:14px 18px 12px;padding-top:calc(14px + var(--safe-area-inset-top,env(safe-area-inset-top,0px)));row-gap:8px;column-gap:12px}
 .brand{flex-shrink:0}.brand small{font-size:10px;letter-spacing:0}.brand strong{font-size:20px}
 .header-tools{margin-left:auto;gap:12px}.audio-library-button,.parent-button{font-size:13px;min-height:44px;margin:0}
 .topbar nav{position:fixed;left:0;right:0;bottom:0;z-index:20;width:100%;margin:0;padding:6px 10px 8px;padding-bottom:calc(8px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom,0px)));background:var(--paper);border-top:1px solid var(--line);box-shadow:0 -5px 20px #303d3705}
 .topbar nav button{display:flex;flex-direction:column;align-items:center;justify-content:center;width:20%;min-height:55px;line-height:1.5;padding:3px 0;font-size:13px}
 .mobile-nav-icon{display:block;width:21px;height:21px;margin-bottom:3px;stroke-width:1.5}
 .topbar nav button.active{color:#294d3d;font-weight:600;background:#e8ede3;border-radius:5px}
 .topbar nav button.active:after{display:none}
 #app{padding:18px 18px 10px;min-height:60vh}
 .hero-copy{padding-top:2px}.hero-copy h1{font-size:32px;margin:8px 0 10px}.hero-copy p{font-size:14px}
 .hero .button-row{margin-top:17px}.hero .quiet{font-size:13px}
 .hero-image{width:100%;max-width:100%;margin:5px 0 0;max-height:240px;object-fit:contain}
 .hero .tag{top:12px}.hero-copy .eyebrow{font-size:11px}
 .course-header p,.garden-head p{font-size:14px}
 .lesson-title{flex:1}.lesson-heading{align-items:flex-start;gap:8px}.lesson-heading h1{font-size:22px}
 .lesson-heading>.quiet{flex-shrink:0;font-size:13px;padding:6px 2px}
 .lesson-heading .muted{font-size:11px}.back{margin-right:9px}
 .steps button{font-size:13px}.steps .step-dot{display:block;margin:0;font-size:11px;line-height:1.4}
 .art-panel{height:208px;min-height:208px}.art-panel .sprite{width:192px;height:192px}.girl-art{height:194px}
 .art-caption{font-size:12px}.hint{font-size:16px}.example-note{font-size:13px;line-height:1.85}
 .course-scope{font-size:12px}.course-scope button{min-height:44px;font-size:13px}
 .learn-copy .audio-edit{font-size:13px;min-height:44px}
 .learn-copy .main-letter{font-size:65px!important;line-height:1.5!important}
 .teacher-tip{font-size:13px}.companion p{font-size:12px;max-width:none}.companion strong{font-size:14px}
 .lesson-footer .primary{font-size:16px}
 .catalog-focus{grid-template-columns:108px minmax(0,1fr);gap:14px}
 .catalog-art .sprite{width:108px;height:140px}
 .catalog-focus p{font-size:13px}.catalog-focus .listen{font-size:13px;padding:10px 9px;min-height:46px}
 .catalog-focus .quiet,.catalog-focus .audio-edit{font-size:13px;min-height:44px}
 .sound-grid button{min-height:60px;font-size:27px}
 .lesson-picture figcaption{font-size:14px}.quiz-card .feedback{font-size:14px}
 .object-card small{font-size:12px}.object-card .sprite{width:100%;max-width:155px;height:145px}
 .continue-bar .quiet{font-size:12px}.section-heading small{font-size:11px}
 .site-footer{margin:20px 18px 0;padding:16px 0 4px;font-size:11px}.site-footer button{font-size:12px}
 .toast{bottom:90px;bottom:calc(90px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom,0px)));font-size:14px}
 .overlay,.audio-overlay{padding:10px;padding-top:calc(10px + var(--safe-area-inset-top,env(safe-area-inset-top,0px)));padding-bottom:calc(10px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom,0px)))}
 .modal-sheet{width:100%;padding:18px 16px;max-height:100%;border-radius:6px}
 .modal-top{gap:10px}.modal-top h2{font-size:21px;line-height:1.5}
 .trace-wrap{height:230px;height:calc(var(--visual-height,100vh) * .36);min-height:150px;max-height:285px}
 .trace-note{font-size:13px;margin:10px 0}.trace-tools{margin-left:-3px;margin-right:-3px}.trace-tools button{padding:9px 7px;margin:3px;font-size:14px;min-height:48px}
 .parent-copy p,.audio-intro,.audio-scope,.audio-help,.audio-privacy{font-size:14px}.audio-label{font-size:14px}
 .audio-sheet select{padding:12px 9px}.audio-upload{min-height:56px}.audio-bottom button{font-size:14px}
}
@media(max-width:359px){
 .topbar,#app{padding-left:14px;padding-right:14px}.brand strong{font-size:18px}.brand small{font-size:9px}
 .header-tools{gap:10px}.audio-library-button,.parent-button{font-size:12px}
 .topbar nav button{font-size:12px}.hero-copy h1{font-size:30px}.hero .quiet{font-size:12px}
 .catalog-focus{grid-template-columns:90px minmax(0,1fr);gap:10px}.catalog-art .sprite{width:90px;height:128px}
 .lesson-heading h1{font-size:20px}.steps button{font-size:12px}
}
@media(max-height:500px) and (orientation:landscape){
 .overlay{align-items:flex-start;padding:8px}.modal-sheet{max-height:100%}.trace-wrap{height:160px;min-height:160px}.trace-note{font-size:12px;margin:7px 0}
}