:root{color-scheme:light dark;--bg:#f4f5f1;--card:#fff;--ink:#283c36;--muted:#64736b;--accent:#426b57;--line:#e0e6df;--soft:#eaf0e8}html,button,.button,.file-button,summary{touch-action:manipulation}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}body[data-theme=dark]{--bg:#18211e;--card:#222e28;--ink:#e5ede6;--muted:#a2b0a5;--accent:#99b89d;--line:#3d4b41;--soft:#314236}@media(prefers-color-scheme:dark){body:not([data-theme=light]){--bg:#18211e;--card:#222e28;--ink:#e5ede6;--muted:#a2b0a5;--accent:#99b89d;--line:#3d4b41;--soft:#314236}}header,main{max-width:720px;margin:auto;padding:24px}header{padding-top:max(24px,env(safe-area-inset-top));display:flex;align-items:center;justify-content:space-between}h1{font-size:30px;margin:0}h2{font-size:23px;margin:0 0 18px}h3{font-size:19px}main{padding-top:8px;padding-bottom:140px}.eyebrow,small,.muted{color:var(--muted)}.eyebrow{font-size:13px;letter-spacing:3px;margin-bottom:7px}.card{padding:22px;border-radius:22px;background:var(--card);margin:0 0 16px;border:1px solid var(--line)}.hero{background:var(--soft)}.metric{font-size:48px;letter-spacing:-2px;font-weight:600;margin:15px 0}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}button,.button{font:inherit;border:0;border-radius:13px;padding:12px 17px;min-height:48px;background:var(--soft);color:var(--ink);cursor:pointer}button.primary{background:var(--accent);color:var(--bg)}button:disabled{opacity:.45;cursor:wait}input,select,textarea{font:inherit;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:13px;border-radius:12px;width:100%;margin:8px 0 16px}label{display:block}input[type=checkbox]{width:auto}nav{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:center;gap:2px;background:var(--card);border-top:1px solid var(--line);padding:8px 4px max(8px,env(safe-area-inset-bottom));z-index:10}nav button{flex:1;max-width:140px;border-radius:12px;background:transparent;font-size:14px;padding:10px 3px}nav button[aria-current=page]{background:var(--soft);font-weight:650}nav span{display:block;font-size:22px;margin-bottom:5px}progress{width:100%;height:8px;accent-color:var(--accent)}.notice{font-size:14px;color:var(--muted);line-height:1.6}.reading{font-family:ui-serif,'Songti SC',serif;white-space:pre-wrap;overflow-wrap:anywhere}.reader-toolbar{position:sticky;top:0;z-index:4;background:var(--bg);padding:12px 0}.chunk{padding:12px 0}.round-heading{border-top:1px solid var(--line);padding-top:24px}.toast{position:fixed;top:12px;left:5%;width:90%;z-index:100;background:var(--ink);color:var(--bg);padding:16px;border-radius:14px;box-shadow:0 8px 30px #0002}dialog{border:1px solid var(--line);border-radius:22px;background:var(--card);color:var(--ink);max-width:92%;width:460px}dialog::backdrop{background:#0006}pre{white-space:pre-wrap;word-break:break-word;font-size:13px}.pill{border:1px solid var(--line);border-radius:30px;padding:6px 12px;font-size:13px}a{color:var(--accent)}:focus-visible{outline:3px solid #7eaa89;outline-offset:2px}.danger{color:#b34444}
/* Immersive reading: fixed compact controls; detailed actions in a sheet. */
[hidden]{display:none!important}
body.reader-mode{overscroll-behavior-y:none}
body.reader-mode>header,body.reader-mode>nav{display:none}
body.reader-mode main{padding:calc(62px + env(safe-area-inset-top)) 22px calc(24px + env(safe-area-inset-bottom));max-width:720px}
.reader-topbar{position:fixed;top:0;left:0;right:0;z-index:20;display:flex;align-items:center;gap:10px;min-height:54px;padding:env(safe-area-inset-top) 12px 0;background:var(--bg);border-bottom:1px solid var(--line)}
.reader-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px;color:var(--muted)}
#read-status{font-size:12px;line-height:1.3;white-space:pre-line;text-align:right;color:var(--muted);font-variant-numeric:tabular-nums;flex:0 0 auto;min-width:96px}
.reader-topbar button{background:transparent;padding:8px 12px;min-width:48px;min-height:48px;font-size:20px;letter-spacing:2px}
.round-finish{margin:18px 0 10px;text-align:center}
.round-finish button{min-height:48px;padding:10px 24px;border-radius:24px;font-size:16px}
.reader-overlay{position:fixed;inset:0;z-index:40;background:#0005;display:flex;align-items:flex-end;justify-content:center}
.reader-sheet{width:100%;max-width:720px;max-height:85vh;max-height:85dvh;overflow-y:auto;overscroll-behavior:contain;background:var(--card);border-radius:24px 24px 0 0;padding:22px 22px calc(24px + env(safe-area-inset-bottom));box-shadow:0 -8px 32px #0002}
.reader-sheet h2{margin:0;font-size:21px}.reader-actions-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0 24px}
body.sheet-open{overflow:hidden}
#round-log{font-size:15px;color:var(--muted)}
body.reader-mode .toast{top:calc(62px + env(safe-area-inset-top));font-size:14px}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.plan-item{padding:12px 0 20px;border-bottom:1px solid var(--line)}.plan-item:last-child{border-bottom:0}
.practice-total h3{margin:6px 0}.practice-total p{margin-bottom:0}
.daily-total{padding:6px 2px;color:var(--muted)}
.session-details summary,.history-session summary{cursor:pointer;min-height:44px;padding:12px 0;color:var(--accent)}
.history-session{padding:10px 0;border-top:1px solid var(--line);font-size:15px}
#completed-summary{font-size:16px;color:var(--muted);margin:6px 0 12px}
.activity-choices{margin:0 0 20px}.activity-choices button{flex:1}
.activity-view{max-width:560px;margin:auto;text-align:center;padding:24px 0}
.activity-view h2{margin:10px 0 20px}.activity-view .card{text-align:left}
.counter-pad{width:100%;min-height:250px;height:42vh;max-height:420px;border-radius:28px;background:var(--soft);color:var(--ink);touch-action:manipulation;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px}
.counter-pad:active{background:var(--line)}.counter-pad span{font-size:clamp(52px,16vw,92px);font-weight:600;font-variant-numeric:tabular-nums;line-height:1.1}.counter-pad small{font-size:18px}
.activity-buttons{justify-content:center;margin:20px 0}.reader-topbar .activity-exit{font-size:14px;letter-spacing:0}
.timer-value{font-size:clamp(38px,11vw,68px);font-weight:600;font-variant-numeric:tabular-nums;padding:55px 0 25px}
.record-totals{display:flex;gap:12px;flex-wrap:wrap;padding:12px 0;font-size:23px}

/* Keep navigation geometry stable on short setup pages and during overscroll. */
html{min-height:100%;scrollbar-gutter:stable}body{min-height:100vh;min-height:100svh;overscroll-behavior-y:none}
nav{height:calc(82px + env(safe-area-inset-bottom));padding:8px 4px calc(8px + env(safe-area-inset-bottom));align-items:center}
nav button{height:65px;flex-shrink:0}
.toast,body.reader-mode .toast{top:auto;bottom:calc(100px + env(safe-area-inset-bottom));font-size:14px;pointer-events:none}
body.reader-mode .toast{bottom:calc(20px + env(safe-area-inset-bottom))}
.practice-total{padding:10px 14px;margin-bottom:8px;border-radius:14px}
.practice-total h3{font-size:16px;margin:2px 0}.practice-total p{margin:3px 0 0;font-size:12px}
.practice-total strong{font-size:16px}.history-filters{display:grid;grid-template-columns:100px minmax(0,1fr);gap:12px;align-items:start}
.history-filters input,.history-filters select{min-width:0;height:50px}

.history-practice{padding:10px 14px;margin-bottom:8px;border-radius:14px}.history-practice h3{margin:2px 0;font-size:16px}.history-practice>.notice{margin:4px 0;font-size:12px}.history-practice>.row>strong{font-size:16px}.history-practice>.session-details>summary{padding:8px 0;font-size:14px;min-height:44px}.history-items{scroll-margin-top:20px}.history-pager{padding-top:8px}

.record-category{padding:0 14px;margin:0 0 10px;border:1px solid var(--line);border-radius:14px;background:var(--card)}.record-category>summary{cursor:pointer;min-height:48px;padding:14px 2px;color:var(--accent);font-weight:600}.record-category .practice-total{padding:10px 2px;border-top:1px solid var(--line)}.record-category .practice-total:first-of-type{border-top:0}
/* Compact resource and plan screens */
main{padding-left:18px;padding-right:18px;padding-top:2px}
main>h2{margin:2px 0 12px}
.card.compact-form,.compact-form{padding:14px 16px;border-radius:16px;margin-bottom:10px}
.compact-form label{font-size:15px;margin-bottom:4px}
.compact-form input,.compact-form select,.compact-form textarea{padding:10px;margin:5px 0 10px;border-radius:10px}
.resource-section{position:relative;background:var(--card);border:1px solid var(--line);border-radius:15px;margin:0 0 10px;padding:0 14px}
.resource-section>summary{cursor:pointer;padding:13px 2px;min-height:46px;color:var(--accent);font-weight:650}
.resource-section.has-inline-actions>summary{padding-right:72px}
.resource-section.two-inline-actions>summary{padding-right:132px}
.resource-actions{padding:4px 0 8px}.file-button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 14px;background:var(--soft);border-radius:12px;cursor:pointer}.file-button input{display:none}
.inline-resource-actions{position:absolute;top:6px;right:8px;display:flex;gap:4px;padding:0;z-index:1}
.inline-resource-actions button,.inline-resource-actions .file-button{min-height:32px;padding:4px 9px;border-radius:9px;font-size:13px}
.resource-row{padding:9px 0;border-top:1px solid var(--line)}.resource-main{display:flex;justify-content:space-between;align-items:center;gap:8px;min-width:0}.resource-main>.resource-title{display:block;min-width:0;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:left;color:var(--ink);font-weight:650;background:transparent;padding:0 2px;min-height:0;line-height:1.4}.resource-main>.row{flex-wrap:nowrap;flex:none;gap:4px}.resource-row button{min-height:38px;padding:7px 8px;font-size:14px;white-space:nowrap}.resource-delete-confirm{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:8px;padding:8px 10px;border-radius:11px;background:var(--soft);font-size:14px}.compact-empty{margin:0 0 10px}
.course-card{padding:14px 16px;border-radius:16px;margin-bottom:9px}.course-card progress{margin:8px 0}.course-actions{gap:6px}.course-actions button{min-height:40px;padding:8px 12px}.compact-card{padding:13px 16px;margin-bottom:10px;border-radius:15px}.checkline{display:flex;gap:8px;align-items:center}.checkline input{margin:4px 0;width:auto}
.course-progress-line{margin:5px 0;color:var(--muted);font-variant-numeric:tabular-nums}.course-card>strong{font-size:16px}
.practice-content{max-height:45vh;overflow:auto;line-height:1.85;padding-top:10px;font-size:1rem;overflow-wrap:anywhere}
.home-reading-card h2{font-size:17px;margin:2px 0 7px}.home-reading-list{display:grid;gap:4px}.home-reading-item{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:42px;border-top:1px solid var(--line);padding:4px 0}.home-reading-name{font-size:14px;line-height:1.4;min-width:0;overflow-wrap:anywhere}.home-reading-action{min-height:34px;padding:6px 12px;font-size:13px;flex:none}
.settings-card{padding:14px 16px;margin-bottom:10px}.settings-card>h3{font-size:17px;margin:2px 0 10px}.settings-controls{display:grid;grid-template-columns:1fr 1fr;gap:12px}.settings-controls label{font-size:14px}.settings-subsection{padding:10px 0;border-top:1px solid var(--line)}.settings-subsection:first-of-type{border-top:0;padding-top:0}.settings-subsection h4{font-size:15px;margin:0 0 5px}.settings-subsection .notice{margin:4px 0 9px;font-size:13px}.settings-detail{margin:0 0 10px;padding:0 15px;background:var(--card);border:1px solid var(--line);border-radius:15px}.settings-detail>summary{cursor:pointer;min-height:48px;padding:14px 1px;color:var(--accent);font-weight:650}.settings-detail .plan-item{padding:6px 0;border-top:1px solid var(--line)}.settings-plans{padding:0 15px}
.record-totals{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:5px 0 14px}.record-totals>div{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:10px;text-align:center;min-width:0}.record-totals strong,.record-totals small{display:block}.record-totals strong{font-size:18px}.record-totals small{font-size:12px;margin-top:3px}

header{padding:10px 18px 7px;padding-top:max(10px,env(safe-area-inset-top))}h1{font-size:26px}

/* Synchronized bilingual lines: each translation pair shares one grid row. */
.reading-line{white-space:pre-wrap;min-height:1.2em}.paired-reading-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:stretch;gap:8px;border-bottom:1px solid var(--line);padding:7px 0}.paired-reading-cell{min-width:0;font-size:.72em;line-height:1.6;white-space:pre-wrap;overflow-wrap:anywhere}.paired-reading-right{border-left:1px solid var(--line);padding-left:8px}.paired-reading-heading{color:var(--muted);font-weight:650;background:var(--soft);border-radius:8px;padding:8px}.paired-reading-heading .paired-reading-right{border-left-color:var(--line)}
.media-import-actions{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 18px}.media-item-main{display:flex;align-items:center;justify-content:space-between;gap:12px}.media-item-main>.row{gap:6px}.media-item .row button{min-height:40px;padding:8px 10px}.media-delete-confirm{border-top:1px solid var(--line);margin-top:12px;padding-top:10px}.media-preview-overlay{position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.62);display:flex;align-items:center;justify-content:center;padding:calc(env(safe-area-inset-top) + 16px) 14px calc(env(safe-area-inset-bottom) + 16px)}.media-preview-card{width:min(100%,720px);max-height:100%;overflow:auto}.media-preview-image,.media-preview-player{display:block;max-width:100%;width:100%;max-height:72vh;object-fit:contain;margin:16px auto 0;border-radius:12px;background:#000}.media-preview-player{height:auto}.media-entry{margin-bottom:14px}@media(max-width:390px){.media-item-main{align-items:flex-start;flex-direction:column}.media-item-main>.row{width:100%;display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.media-item-main>.row button{padding:7px 4px}}
.media-group-tools{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:end;margin:10px 0 14px}.media-group-tools label,.media-group-label,.media-description-label{font-size:14px;color:var(--muted)}.media-group-tools select,.media-group-label select{margin:5px 0 0;padding:9px}.media-group-tools button{min-height:43px;padding:8px 12px}.media-description-label{display:block;margin-top:6px}.media-description-label textarea{font-size:16px;min-height:62px;padding:9px;margin:5px 0}.media-item>button[data-media-save-description]{min-height:38px;padding:7px 12px;font-size:14px}.daily-note-list{display:grid;gap:7px}.daily-note-row{display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;padding:12px 14px;min-height:60px;background:var(--card);border:1px solid var(--line)}.daily-note-row strong{font-size:14px;color:var(--accent)}.daily-note-row span{font-size:14px;color:var(--muted);line-height:1.4;white-space:pre-wrap;overflow-wrap:anywhere}
.pdf-toolbar{position:sticky;top:calc(54px + env(safe-area-inset-top));z-index:5;display:flex;align-items:center;justify-content:center;gap:5px;background:var(--bg);padding:8px 0;border-bottom:1px solid var(--line)}.pdf-toolbar button{min-width:42px;min-height:42px;padding:6px 10px}.pdf-toolbar label{display:flex;align-items:center;gap:4px;font-size:14px;white-space:nowrap}.pdf-toolbar input{width:62px;margin:0;padding:8px;text-align:center}.pdf-canvas-wrap{display:flex;justify-content:center;overflow:auto;margin:10px -10px;touch-action:pan-y;overscroll-behavior-x:contain}.pdf-canvas-wrap.is-zoomed{justify-content:flex-start;touch-action:auto}.pdf-canvas-wrap canvas{max-width:none;background:#fff;box-shadow:0 2px 12px #0002}.pdf-reader-error{color:#b34444}.history-section-title{margin:20px 4px 10px;color:var(--muted);font-size:16px}.backup-restore-actions{flex-wrap:wrap}
.reader-language-tabs{position:fixed;top:calc(54px + env(safe-area-inset-top));left:0;right:0;z-index:19;display:flex;justify-content:center;gap:4px;padding:5px 12px;background:var(--bg);border-bottom:1px solid var(--line)}.reader-language-tabs button{min-height:36px;padding:5px 16px;border-radius:10px;background:transparent;color:var(--muted);font-size:14px}.reader-language-tabs button.selected{background:var(--soft);color:var(--accent);font-weight:650}body.language-reader main{padding-top:calc(108px + env(safe-area-inset-top))}.paired-single{display:block}.paired-single .paired-reading-cell{font-size:.96em;line-height:1.85;border-left:0;padding-left:0;white-space:pre-wrap;overflow-wrap:anywhere}