@media(max-width:760px){body{display:block;padding-bottom:calc(78px + env(safe-area-inset-bottom));min-height:100dvh}.sidebar{position:fixed;z-index:15;inset:auto 0 0;width:100%;height:auto;padding:7px 7px calc(7px + env(safe-area-inset-bottom));display:block;border-top:1px solid #405048}.brand,.profile-card,.streak,.settings{display:none!important}.sidebar nav{display:flex;flex-direction:row;gap:4px;overflow-x:auto;scrollbar-width:none}.sidebar nav::-webkit-scrollbar{display:none}.nav{min-width:74px;min-height:54px;padding:6px 7px;justify-content:center;flex-direction:column;gap:2px;text-align:center;font-size:10px;white-space:nowrap}.nav span{font-size:18px;width:auto}.nav b{position:absolute;margin:0;transform:translate(22px,-15px);font-size:9px;padding:1px 5px}main{margin:0;width:100%;padding:calc(18px + env(safe-area-inset-top)) 14px 26px}header{margin-bottom:18px;align-items:center}header h1{font-size:21px}.level-pill{padding:7px 9px}.hero{padding:24px 20px;border-radius:17px}.hero h2{font-size:23px}.hero .ring{display:none}.lesson-grid{grid-template-columns:1fr 1fr}.lesson{min-height:170px;padding:16px}.lesson-icon{margin-bottom:12px}.panel{padding:20px;border-radius:15px}.word-game-hud{gap:7px;flex-wrap:wrap}.quest-track{order:-1;flex-basis:100%}.hud-stat{padding:7px 9px;font-size:11px}.word-game-hud .combo{display:none}.quest-map{overflow:hidden}.flashcard{padding:28px 14px}.flashcard h2{font-size:29px}.game-options{grid-template-columns:1fr}.game-answer-panel{display:block;max-height:46dvh;overflow-y:auto;padding:15px}.game-answer-panel .primary{width:100%;margin-top:12px}.reading-layout{grid-template-columns:1fr}.article p{font-size:16px}.phrase{font-size:21px;padding:24px 14px}.speed-actions{display:grid;grid-template-columns:1fr 1fr}.speed-actions .primary{grid-column:1/-1;grid-row:1}.record-actions{display:flex}.pronunciation-tips{grid-template-columns:1fr}.practice-hero{padding:22px}.practice-score{padding:12px}.daily-quests,.practice-grid{grid-template-columns:1fr}.match-board{grid-template-columns:1fr 1fr}.cet-head{display:block}.cet-tabs{overflow-x:auto;white-space:nowrap}.stats{grid-template-columns:1fr 1fr}.modal{padding:14px}.modal-card{width:100%;max-height:88dvh;overflow-y:auto;padding:22px}.voice-choice-grid{grid-template-columns:1fr}.backup-actions{grid-template-columns:1fr}.ios-install-tip{left:12px;right:12px;bottom:calc(78px + env(safe-area-inset-bottom));max-width:none}}
.ios-install-tip{position:fixed;z-index:50;right:18px;bottom:18px;max-width:360px;background:#fffdf8;border:1px solid #d6d3c9;border-radius:15px;padding:15px 42px 15px 16px;box-shadow:0 12px 45px #0003;display:flex;flex-direction:column;gap:4px}.ios-install-tip strong{font-size:14px}.ios-install-tip span{font-size:12px;line-height:1.5;color:#6f756f}.ios-install-tip button{position:absolute;right:10px;top:8px;border:0;background:transparent;font-size:20px;cursor:pointer}