:root{--paper:#fcfaf6;--ink:#252019;--muted:#a89e92;--faint:#e0d8cc;--hair:#d8cfc1;--reading-font:Georgia,"Songti SC","Noto Serif",serif;--reading-size:15px;--reading-measure:680px}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);margin:0;font-family:Georgia,Songti SC,Noto Serif,serif}.app{grid-template-columns:172px 1fr;min-height:100vh;display:grid}.rail{border-right:1px solid var(--faint);padding:20px 12px;font-size:13px}.rlabel{letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 10px;font-size:10px}.rail .nav-group:not(:first-child){margin-top:20px}.chap{color:var(--muted);cursor:pointer;border-radius:5px;padding:6px 8px}.chap.on{color:var(--ink);background:#789ec41f;font-weight:600}.add{color:var(--muted);cursor:pointer;opacity:.8;padding:6px 8px}.outline-item.outline-h2{padding-left:20px;font-size:.95em}.outline-hint{color:var(--muted);opacity:.6;padding:6px 8px;font-size:12px}.chap-edit{border:1px solid var(--hair);background:var(--paper);width:100%;color:var(--ink);font:inherit;border-radius:4px;padding:4px 6px}.page{justify-content:center;padding:36px 0;display:flex;position:relative}.river-wrap{width:min(var(--reading-measure), 96%)}.river-wrap .river{width:100%}.reading-settings{z-index:6;position:absolute;top:12px;right:24px}.settings-gear{border:1px solid var(--faint);background:var(--paper);color:var(--muted);cursor:pointer;border-radius:6px;width:28px;height:28px;font-size:14px;line-height:1}.settings-gear:hover{color:var(--ink);border-color:var(--hair)}.settings-panel{z-index:6;background:var(--paper);border:1px solid var(--hair);border-radius:8px;flex-direction:column;gap:10px;min-width:200px;padding:12px;display:flex;position:absolute;top:34px;right:0;box-shadow:0 4px 14px #00000014}.settings-row{color:var(--muted);align-items:center;gap:8px;font-size:12px;display:flex}.settings-row button{border:1px solid var(--faint);color:var(--ink);cursor:pointer;background:0 0;border-radius:5px;flex:1;padding:5px 8px;font-size:12px}.settings-row button.on{border-color:var(--hair);background:#789ec429;font-weight:600}.settings-row button:hover{border-color:var(--hair)}.settings-row input[type=range]{flex:1}.carry-banner{z-index:5;text-align:center;background:color-mix(in srgb, var(--thread,#7fa3c4) 16%, var(--paper));border:1px solid var(--hair);color:var(--ink);border-radius:6px;margin-bottom:14px;padding:8px 14px;font-size:13px;position:sticky;top:0}.river{outline:none}.river .card{background:color-mix(in srgb, var(--card-bg,#7fa3c4) 13%, transparent);padding:12px 16px 12px 40px;position:relative}.river .card[data-color]{background:color-mix(in srgb, var(--card-bg) 16%, transparent)}.river .card+.card:before{content:"";border-top:1px solid var(--hair);position:absolute;top:0;left:40px;right:16px}.river .card:after{content:"⠿";color:var(--muted);opacity:0;cursor:grab;font-size:12px;position:absolute;top:14px;left:14px}.river .card:hover:after{opacity:.5}.river .card.dragging{opacity:.35}.card-drag-ghost{z-index:50;pointer-events:none;background:var(--paper);border:1px solid var(--hair);max-width:320px;font-family:var(--reading-font);color:var(--ink);white-space:nowrap;text-overflow:ellipsis;border-radius:6px;padding:8px 12px;font-size:13px;line-height:1.6;position:fixed;top:0;left:0;overflow:hidden;box-shadow:0 6px 20px #00000024}.card-drop-indicator{z-index:49;pointer-events:none;background:var(--thread,#7fa3c4);height:2px;box-shadow:0 0 0 3px color-mix(in srgb, var(--thread,#7fa3c4) 20%, transparent);border-radius:1px;position:fixed}.river .card-body{font-family:var(--reading-font);font-size:var(--reading-size)}.river .card-body p{text-indent:2em;margin:0;line-height:1.95}.river .card-body p[data-style=chapter]{text-indent:0;margin:.6em 0 .4em;font-size:1.4em;font-weight:700;line-height:1.4}.river .card-body p[data-style=h1]{text-indent:0;margin:.4em 0;font-size:1.25em;font-weight:700;line-height:1.5}.river .card-body p[data-style=h2]{text-indent:0;margin:.4em 0;font-size:1.1em;font-weight:600;line-height:1.5}.add-card{border:1px dashed var(--faint);color:var(--muted);cursor:pointer;background:0 0;border-radius:6px;margin:14px 0 0 40px;padding:6px 12px;font-size:12px}.add-card:hover{color:var(--ink);border-color:var(--hair)}.river p.is-empty:before{content:attr(data-placeholder);color:var(--muted);opacity:.5;float:left;pointer-events:none;height:0}.selection-toolbar{z-index:30;background:var(--paper);border:1px solid var(--hair);border-radius:8px;align-items:center;gap:10px;padding:6px 8px;font-family:-apple-system,Songti SC,sans-serif;display:flex;box-shadow:0 6px 20px #00000029}.selection-toolbar .sel-group{align-items:center;gap:4px;display:flex}.selection-toolbar .sel-group+.sel-group{border-left:1px solid var(--faint);padding-left:8px}.selection-toolbar button{color:var(--ink);cursor:pointer;white-space:nowrap;background:0 0;border:1px solid #0000;border-radius:5px;padding:5px 8px;font-size:12px}.selection-toolbar button:hover{border-color:var(--hair)}.selection-toolbar button.on{border-color:var(--hair);background:#789ec429;font-weight:600}.selection-toolbar .swatch{border:1px solid var(--hair);border-radius:50%;width:18px;height:18px;padding:0}.selection-toolbar .swatch:hover{border-color:var(--ink)}.selection-toolbar .swatch.clear{width:auto;height:auto;color:var(--muted);border-color:var(--faint);background:0 0;border-radius:5px;padding:5px 8px;font-size:11px}.shelf{max-width:980px;margin:0 auto;padding:56px 24px}.shelf-hint{color:var(--muted);text-align:center;padding:96px 0;font-size:14px}.shelf-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:26px;margin-bottom:36px;display:grid}.book-card{cursor:pointer;position:relative}.book-cover{aspect-ratio:3/4;border:1px solid var(--hair);border-radius:8px;transition:transform .15s,box-shadow .15s;position:relative;overflow:hidden;box-shadow:0 6px 16px #00000014}.book-cover:after{content:"";mix-blend-mode:overlay;background-image:repeating-linear-gradient(135deg,#ffffff24 0 1px,#0000 1px 6px);position:absolute;inset:0}.book-card:hover .book-cover{transform:translateY(-3px);box-shadow:0 10px 22px #00000024}.book-title{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;margin:10px 2px 0;font-size:13px;overflow:hidden}.book-title-edit{width:100%;font:inherit;border:1px solid var(--hair);background:var(--paper);color:var(--ink);border-radius:4px;margin:10px 0 0;padding:3px 5px;font-size:13px}.book-delete{color:#fff;cursor:pointer;opacity:0;background:#1e1a1459;border:1px solid #ffffff80;border-radius:50%;width:22px;height:22px;font-size:13px;line-height:1;transition:opacity .15s;position:absolute;top:6px;right:6px}.book-card:hover .book-delete{opacity:1}.shelf-add{border:1px dashed var(--faint);color:var(--muted);cursor:pointer;border-radius:6px;padding:10px 18px;font-size:13px;display:inline-block}.shelf-add:hover{color:var(--ink);border-color:var(--hair)}.back-to-shelf{z-index:6;border:1px solid var(--faint);background:var(--paper);color:var(--muted);cursor:pointer;border-radius:6px;padding:5px 10px;font-size:12px;position:absolute;top:12px;left:24px}.back-to-shelf:hover{color:var(--ink);border-color:var(--hair)}.box-view{width:min(680px,90%)}.box-header{align-items:baseline;gap:8px;margin-bottom:18px;display:flex}.box-header h2{margin:0;font-size:18px;font-weight:600}.box-count{color:var(--muted);font-size:12px}.box-empty{color:var(--muted);text-align:center;padding:24px 0;font-size:13px}.box-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;display:grid}.tcard{border:1px solid var(--hair);background:var(--paper);border-radius:8px;min-height:96px;padding:12px 12px 40px;position:relative}.tcard-text{color:var(--ink);-webkit-line-clamp:4;white-space:pre-wrap;-webkit-box-orient:vertical;margin:0;font-size:13px;line-height:1.7;display:-webkit-box;overflow:hidden}.tcard [data-box-action=insert]{border:1px solid var(--faint);color:var(--muted);cursor:pointer;background:0 0;border-radius:5px;padding:4px 8px;font-size:11px;position:absolute;bottom:8px;right:8px}.tcard [data-box-action=insert]:hover{color:var(--ink);border-color:var(--hair)}.auth-loading{height:100vh;color:var(--muted);justify-content:center;align-items:center;font-size:13px;display:flex}.signin-gate{justify-content:center;align-items:center;height:100vh;padding:24px;display:flex}.signin-card{border:1px solid var(--hair);background:var(--paper);text-align:center;border-radius:10px;width:min(340px,100%);padding:28px 24px}.signin-title{color:var(--ink);margin:0 0 18px;font-size:14px}.signin-email{box-sizing:border-box;border:1px solid var(--faint);background:var(--paper);width:100%;color:var(--ink);font:inherit;border-radius:6px;margin-bottom:12px;padding:8px 10px;font-size:13px}.signin-email:focus{border-color:var(--hair);outline:none}.signin-submit{border:1px solid var(--hair);width:100%;color:var(--ink);font:inherit;cursor:pointer;background:#789ec429;border-radius:6px;padding:8px 10px;font-size:13px;font-weight:600}.signin-submit:hover{border-color:var(--muted)}.signin-submit:disabled{opacity:.6;cursor:default}.signin-msg{color:var(--ink);margin:0 0 4px;font-size:13px;line-height:1.7}.signin-error{color:#b5533c;margin:8px 0 0;font-size:12px}.signin-local{width:100%;color:var(--muted);cursor:pointer;background:0 0;border:none;margin-top:16px;font-size:12px;text-decoration:underline;display:block}.signin-local:hover{color:var(--ink)}