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env(safe-area-inset-bottom));left:12px;z-index:8;display:flex;flex-wrap:nowrap;gap:7px;width:min(calc(100% - 24px),760px);margin:0 auto;overflow-x:auto;border:1px solid rgba(60,60,67,.12);border-radius:22px;background:#ffffffeb;padding:8px;box-shadow:0 18px 40px #0f172a29;-webkit-backdrop-filter:blur(22px) saturate(1.25);backdrop-filter:blur(22px) saturate(1.25)}.word-bottom-toolbar button,.word-bottom-toolbar select,.word-bottom-toolbar label{flex:0 0 auto}.word-bottom-toolbar button{min-width:38px;font-size:.94rem}.word-bottom-toolbar select{max-width:112px}.immersive-generate-action{position:fixed;top:calc(10px + env(safe-area-inset-top));right:12px;bottom:auto;z-index:10;margin:0;padding:0;background:transparent}.immersive-generate-action .error-text{position:absolute;right:0;top:42px;width:min(280px,calc(100vw - 24px));border-radius:14px;background:#ffffffeb;padding:8px 10px;box-shadow:0 10px 24px #0f172a1a}.immersive-generate-action .full-width-button{width:auto;min-height:34px;border-radius:999px;padding:0 13px;box-shadow:none}.single-sentence-stage{display:grid;min-height:calc(100vh - 300px);align-content:center;justify-items:center;gap:18px;padding:22px 0 142px}.single-sentence-stage .sentence-count{border-radius:999px;background:#7676801f;padding:5px 10px}.single-sentence{width:min(100%,760px);border:0;background:transparent;padding:10px 8px;box-shadow:none;color:#111827;font-family:ui-serif,Georgia,Times New Roman,serif;font-size:clamp(1.65rem,5vw,2.75rem);line-height:1.55;text-align:center}.sentence.active.single-sentence{background:transparent;box-shadow:none}.single-sentence .word-token{font-size:inherit;line-height:inherit}.reader-control-panel .reader-icon-button{min-width:54px;min-height:54px;padding:0;font-size:1.8rem;line-height:1}.reader-control-panel .reader-play-button{min-width:62px;min-height:62px;padding:0;font-size:1.28rem;line-height:1}.lookup-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.word-lookup-sheet .lookup-header button{display:inline-grid;width:34px;min-width:34px;height:34px;min-height:34px;place-items:center;border:0;border-radius:999px;background:#76768024;color:var(--ios-secondary);font-size:1.2rem}.word-lookup-sheet>button{background:var(--ios-blue);color:#fff}.bottom-nav{left:50%;width:min(100%,860px);transform:translate(-50%);border:1px solid rgba(60,60,67,.12);border-bottom:0;border-radius:24px 24px 0 0;background:#ffffffd6;box-shadow:0 -12px 28px #0f172a1a}.bottom-nav button{min-height:46px;border-radius:16px;background:transparent;color:var(--ios-secondary)}.bottom-nav button:not(:disabled):focus,.bottom-nav button:not(:disabled):hover{background:#007aff1a;color:var(--ios-blue)}.app-version{border:0;background:#ffffffb8;color:var(--ios-tertiary)}.empty-state,.error-text{color:var(--ios-secondary)}@media(max-width:720px){.reader-primary-actions{justify-content:space-between}.style-toolbar{grid-template-columns:1fr 1fr}}@media(max-width:520px){.app-shell{padding-right:10px;padding-left:10px}.ios-header{margin-right:-10px;margin-left:-10px;padding-right:10px;padding-left:10px}.month-grid,.weekday-row{gap:4px}.month-day{min-height:66px;border-radius:12px;padding:6px 3px}.month-day strong{font-size:.82rem}.month-lunar{font-size:.62rem}.calendar-diary-title,.event-labels span{font-size:.54rem}.date-choice-sheet{right:10px;left:10px}}