:root{--memo-navy:#073b78;--memo-blue:#1769d2;--memo-green:#008f75;--memo-gold:#d8a328;--memo-paper:#fffdf7;--memo-ink:#162b4d}.memo-launch{border:0;border-radius:14px;background:linear-gradient(135deg,var(--memo-navy),var(--memo-blue));color:#fff;font:inherit;font-weight:800;padding:.72rem 1rem;cursor:pointer;box-shadow:0 5px 14px #073b7830}.memo-overlay{position:fixed;inset:0;z-index:999999;background:#061a36;color:var(--memo-ink);direction:rtl}.memo-overlay[hidden]{display:none}.memo-fullscreen-gate{height:100%;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 50% 20%,#1459aa,#061a36 63%)}.memo-gate-card{max-width:470px;text-align:center;background:#fffdf7;border-radius:28px;padding:36px;box-shadow:0 18px 50px #0006}.memo-gate-card h2{margin:0 0 10px;color:var(--memo-navy)}.memo-gate-card p{line-height:1.8;color:#526176}.memo-gate-card button,.memo-close,.memo-book-nav button{font:inherit;font-weight:800;border:0;cursor:pointer}.memo-gate-card button{margin-top:14px;padding:13px 22px;border-radius:13px;background:var(--memo-blue);color:#fff}.memo-reader{height:100%;display:grid;grid-template-rows:auto 1fr;background:linear-gradient(130deg,#052d61,#083d77)}.memo-reader-top{min-height:58px;padding:8px 16px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:12px}.memo-reader-title{font-weight:900}.memo-reader-meta{font-size:.88rem;color:#c9dbf3}.memo-close{background:#ffffff1a;color:#fff;border:1px solid #ffffff47;border-radius:10px;padding:8px 12px}.memo-book-shell{min-height:0;display:grid;grid-template-columns:52px minmax(0,1fr) 52px;align-items:center;gap:8px;padding:0 12px 12px}.memo-book-nav button{width:42px;height:42px;border-radius:50%;background:#fff;color:var(--memo-navy);font-size:1.4rem}.memo-spread{height:100%;min-height:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));max-width:1720px;width:100%;margin:auto;gap:2px;padding:9px;background:#9e7337;border-radius:9px;box-shadow:0 18px 34px #0005}.memo-page{min-width:0;overflow:auto;background:var(--memo-paper);border-radius:4px;padding:clamp(14px,2.2vw,30px);display:flex;flex-direction:column;position:relative}.memo-page-header{display:flex;align-items:center;justify-content:space-between;border-bottom:2px solid #dce9f5;padding-bottom:10px;margin-bottom:14px}.memo-page-kicker{font-size:.78rem;color:#527092;font-weight:800}.memo-page h1,.memo-page h2{margin:0;color:var(--memo-navy);font-size:clamp(1.05rem,1.9vw,1.55rem)}.memo-cover{justify-content:center;text-align:center;background:linear-gradient(140deg,#fffdf7,#edf7ff)}.memo-cover .memo-star{font-size:5rem;color:var(--memo-gold)}.memo-cover h1{font-size:clamp(2rem,5vw,4.5rem)}.memo-index-list{display:grid;gap:10px}.memo-index-unit{border:1px solid #d8e3ef;border-radius:14px;padding:12px}.memo-index-unit strong{display:block;color:var(--memo-navy);margin-bottom:8px}.memo-index-point{width:100%;display:flex;align-items:center;gap:8px;border:0;background:#f5f9fd;border-radius:10px;padding:10px;text-align:right;cursor:pointer;font:inherit}.memo-index-dot{width:24px;height:24px;display:grid;place-items:center;border-radius:50%;background:var(--memo-blue);color:#fff;font-size:.78rem}.memo-lesson-body{line-height:1.9;font-size:clamp(.95rem,1.3vw,1.12rem);color:#283e5e}.memo-media{position:relative;display:grid;place-items:center;background:#e9f3fb;border:1px solid #b7d3ea;border-radius:12px;overflow:hidden;margin:14px 0}.memo-media.r16{aspect-ratio:16/9}.memo-media.r43{aspect-ratio:4/3}.memo-media img{width:100%;height:100%;object-fit:var(--memo-fit,contain);background:#e7eef5}.memo-media button{position:absolute;bottom:9px;left:9px;border:0;border-radius:9px;background:#073b78dc;color:#fff;padding:7px 10px;font:inherit;cursor:pointer}.memo-actions{margin-top:auto;display:flex;gap:10px}.memo-actions button{flex:1;border-radius:11px;padding:11px;border:2px solid var(--memo-blue);font:inherit;font-weight:800;cursor:pointer}.memo-actions .primary{background:var(--memo-blue);color:#fff}.memo-question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.memo-question{border:1px solid #d7e3ef;border-radius:12px;padding:10px;background:#fff}.memo-question b{font-size:.83rem;display:block;margin-bottom:7px}.memo-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.memo-option{font-size:.8rem;border:1px solid #d5e1ec;border-radius:8px;padding:7px;cursor:pointer;background:#fff;text-align:right}.memo-option.selected{background:#e6f1ff;border-color:var(--memo-blue);outline:2px solid #1769d222}.memo-question[data-type=ordering] .memo-options,.memo-question[data-type=matching] .memo-options{grid-template-columns:1fr}.memo-sort{display:flex;gap:6px;align-items:center;border:1px dashed #abc5dd;border-radius:7px;padding:5px;background:#f7fbff;cursor:grab}.memo-answer{margin-top:7px;width:100%;box-sizing:border-box;border:1px solid #b7cce1;border-radius:8px;padding:8px;font:inherit}.memo-footer{margin-top:auto;padding-top:13px;border-top:1px solid #e4ecf2;text-align:center;font-size:.75rem;color:#58708b}.memo-admin,.memo-teacher{height:100%;overflow:auto;background:#f4f8fc;padding:clamp(18px,3vw,42px)}.memo-panel{max-width:1100px;margin:auto;background:#fff;border-radius:18px;padding:22px;box-shadow:0 8px 25px #12345616}.memo-panel h1{color:var(--memo-navy);margin-top:0}.memo-panel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.memo-card{border:1px solid #dce7f0;border-radius:14px;padding:14px}.memo-card h3{margin:0 0 8px}.memo-form{display:grid;gap:9px}.memo-form input,.memo-form select,.memo-form textarea{font:inherit;padding:9px;border:1px solid #c6d5e3;border-radius:9px}.memo-form button,.memo-card button{font:inherit;font-weight:800;border:0;border-radius:9px;background:var(--memo-blue);color:#fff;padding:9px;cursor:pointer}.memo-status{font-size:.83rem;color:#527092}.memo-toast{position:fixed;bottom:20px;left:20px;background:#092f62;color:#fff;padding:11px 15px;border-radius:10px;z-index:1000000}.memo-expanded{position:fixed;inset:0;background:#000d;z-index:1000001;display:grid;place-items:center;padding:24px}.memo-expanded img{max-width:95vw;max-height:90vh;object-fit:contain;background:#fff}.memo-empty{padding:18px;color:#60748b;text-align:center}@media(max-width:900px){.memo-spread{grid-template-columns:1fr;max-width:850px}.memo-page:nth-child(2){display:none}.memo-question-grid{grid-template-columns:1fr}.memo-panel-grid{grid-template-columns:1fr}}@media(max-width:520px){.memo-book-shell{grid-template-columns:35px minmax(0,1fr) 35px;padding:0 3px 4px}.memo-book-nav button{width:32px;height:32px}.memo-reader-top{padding:8px}.memo-reader-meta{display:none}.memo-spread{padding:4px}.memo-page{padding:14px}.memo-options{grid-template-columns:1fr}.memo-actions{flex-direction:column}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}