:root{color-scheme:light;--ei-bg:#f6f4ef;--ei-card:#fffefa;--ei-dark:#143c34;--ei-primary:#0c594b;--ei-border:#e4e4de;--ei-muted:#66756e;--ei-text:#1d312b;--ei-shadow:0 8px 28px rgba(21,55,48,.05);font-family:Vazirmatn,Tahoma,Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ei-bg);color:var(--ei-text);line-height:1.8;overflow-x:hidden}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #79bba6;outline-offset:2px}[hidden]{display:none!important}
.ei-top{background:#fffcf6;border-bottom:1px solid var(--ei-border)}.ei-top-inner{max-width:1390px;margin:auto;padding:12px clamp(16px,3vw,34px);display:flex;justify-content:space-between;align-items:center;gap:12px}.ei-brand{display:flex;align-items:center;gap:12px}.ei-brand strong{display:block;font-size:14px}.ei-brand small{display:block;font-size:11px;color:var(--ei-muted)}.ei-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--ei-dark);color:white;font-weight:bold}.ei-back{border:1px solid var(--ei-border);border-radius:12px;padding:7px 12px;font-size:12px;white-space:nowrap;background:white}.ei-shell{max-width:1390px;margin:0 auto;padding:clamp(16px,3vw,34px)}.ei-hero{margin:0 0 20px;padding:4px 0 18px}.ei-hero h1{font-size:clamp(22px,2.9vw,36px);letter-spacing:-.5px;margin:4px 0 8px;line-height:1.5}.ei-hero>p:last-child{color:var(--ei-muted);margin:0;max-width:800px;font-size:14px}.ei-eyebrow{font-size:11px;letter-spacing:.1px;font-weight:700;color:var(--ei-primary);margin:0 0 4px}.ei-notice{background:#f4eee2;border:1px solid #ded6c8;border-radius:14px;padding:10px 15px;font-size:13px;margin:10px 0}.ei-notice[data-kind=error]{background:#fff1f0;border-color:#e8c2be;color:#8d3633}.ei-notice[data-kind=success]{background:#edf7f1;border-color:#b6dcc4;color:#1d633b}
.ei-layout{display:grid;grid-template-columns:minmax(190px,260px) minmax(0,1fr);gap:20px;align-items:start}.ei-aside{min-width:0;background:var(--ei-card);border:1px solid var(--ei-border);border-radius:20px;padding:18px;box-shadow:var(--ei-shadow)}.ei-section-title{font-weight:800;font-size:14px;margin-bottom:12px;display:flex;justify-content:space-between;gap:8px}.ei-section-title span{font-size:12px;color:var(--ei-muted)}.ei-course-list{display:grid;gap:8px}.ei-course-tile{text-align:right;background:#fff;border:1px solid var(--ei-border);border-radius:13px;padding:12px;color:var(--ei-text);width:100%;min-width:0;transition:background .15s,border-color .15s}.ei-course-tile:hover{border-color:#a6c4b7}.ei-course-tile.is-current{background:#eaf3ef;border-color:#89b7a7}.ei-tile-head{font-size:13px;font-weight:700;display:block;overflow-wrap:anywhere}.ei-tile-meta{color:var(--ei-muted);font-size:11px;display:block;margin-top:4px}.ei-content{min-width:0}.ei-reader{background:var(--ei-card);border:1px solid var(--ei-border);border-radius:22px;padding:clamp(13px,2vw,25px);box-shadow:var(--ei-shadow);min-width:0}.ei-reader-head{display:flex;justify-content:space-between;gap:16px;align-items:start;margin-bottom:14px}.ei-reader-head h2{font-size:clamp(15px,1.75vw,20px);line-height:1.55;margin:0;overflow-wrap:anywhere}.ei-mode{white-space:nowrap;border:1px solid var(--ei-border);border-radius:99px;padding:3px 10px;color:var(--ei-muted);font-size:11px;background:white}.ei-stage{border-radius:16px;border:1px solid #e4e7e4;background:linear-gradient(145deg,#eff3ef,#f7f5f0);width:100%;min-width:0;max-height:72svh;aspect-ratio:var(--ei-ratio,16/10);display:flex;align-items:center;justify-content:center;overflow:hidden;touch-action:pan-y;position:relative}.ei-stage img{display:block;width:100%;height:100%;max-width:100%;max-height:72svh;object-fit:contain;user-select:none;cursor:zoom-in}.ei-stage--original{aspect-ratio:var(--ei-ratio,16/10)}.ei-stage--portrait{width:min(100%,540px);margin-inline:auto}.ei-stage--square{width:min(100%,770px);margin-inline:auto}.ei-lock{display:grid;justify-items:center;text-align:center;align-content:center;gap:8px;padding:clamp(16px,3vw,34px);max-width:440px;overflow:auto}.ei-lock-icon{display:grid;place-items:center;width:50px;height:50px;border-radius:50%;background:#dceae4;color:var(--ei-primary);font-size:30px}.ei-lock h3{font-size:clamp(14px,2vw,19px);margin:0}.ei-lock p{font-size:12px;color:var(--ei-muted);margin:0 0 10px}.ei-caption{font-size:13px;color:#4e6059;margin:13px 2px;overflow-wrap:anywhere}.ei-controls{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:17px 0 12px}.ei-btn{display:inline-flex;justify-content:center;align-items:center;gap:10px;background:var(--ei-primary);border:1px solid var(--ei-primary);color:white;border-radius:12px;padding:9px 17px;font-weight:700;font-size:12px;text-align:center}.ei-btn--subtle{background:white;color:var(--ei-primary);border-color:#c9d7ce}.ei-btn:disabled{opacity:.4;cursor:not-allowed}.ei-count{white-space:nowrap;font-size:12px;color:var(--ei-muted)}.ei-pages{display:flex;justify-content:center;align-items:center;gap:7px;flex-wrap:wrap;max-height:110px;overflow-y:auto;padding:5px}.ei-page{background:white;color:#61736c;border:1px solid var(--ei-border);border-radius:10px;min-width:37px;height:34px;padding:0 7px;font-size:11px}.ei-page.is-current{color:white;background:var(--ei-dark);border-color:var(--ei-dark)}.ei-hint{font-size:11px;text-align:center;margin:10px 0 0;color:#7c8a82}.ei-empty{text-align:center;background:white;border:1px dashed var(--ei-border);padding:40px 20px;border-radius:18px;font-size:13px;color:var(--ei-muted)}.ei-link-full{display:flex;margin-top:16px}.ei-foot{display:flex;gap:12px;justify-content:space-between;margin-top:22px;font-size:11px;color:#7b877e;border-top:1px solid var(--ei-border);padding-top:15px}
.ei-layout--admin{grid-template-columns:minmax(170px,220px) minmax(0,1fr)}.ei-admin-grid{display:grid;grid-template-columns:minmax(290px,.9fr) minmax(0,1.1fr);gap:18px;align-items:start}.ei-admin-card{background:var(--ei-card);border:1px solid var(--ei-border);border-radius:18px;padding:18px;margin-bottom:14px;min-width:0}.ei-form,.ei-slide-row{display:grid;gap:12px}.ei-form label,.ei-slide-row label{display:grid;gap:4px;font-size:12px;font-weight:700;color:#455951;min-width:0}.ei-form input:not([type=checkbox]),.ei-form textarea,.ei-form select,.ei-slide-row input:not([type=checkbox]),.ei-slide-row textarea,.ei-slide-row select{background:white;min-width:0;max-width:100%;width:100%;border:1px solid #d6ddd7;border-radius:10px;padding:8px 10px;font-weight:400;color:#213b31;outline-offset:2px}.ei-form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.ei-form .ei-check,.ei-slide-row .ei-check{display:flex;align-items:center;gap:7px;font-weight:400}.ei-muted{color:var(--ei-muted);font-size:11px;margin:7px 0 0}.ei-slide-row{border-top:1px solid var(--ei-border);padding:16px 0}.ei-slide-row-head{display:flex;justify-content:space-between;gap:8px}.ei-slide-row-head strong{overflow-wrap:anywhere;font-size:13px}.ei-slide-row-head span{font-size:11px;color:var(--ei-muted);white-space:nowrap}.ei-zoom{max-width:100vw;max-height:100svh;width:100vw;height:100svh;margin:0;padding:18px;background:#14241f;color:white;border:0;overflow:auto}.ei-zoom::backdrop{background:#10221edd}.ei-zoom img{display:block;object-fit:contain;max-width:100%;max-height:calc(100svh - 45px);margin:auto}.ei-zoom-close{background:white;color:#153d31;border:0;border-radius:50%;width:36px;height:36px;position:fixed;top:12px;inset-inline-end:14px;z-index:5}
@media(max-width:1000px){.ei-admin-grid{grid-template-columns:1fr}.ei-layout--admin{grid-template-columns:minmax(155px,210px) minmax(0,1fr)}}
@media(max-width:720px){.ei-shell{padding:16px 12px}.ei-layout,.ei-layout--admin{grid-template-columns:minmax(0,1fr);gap:12px}.ei-aside{padding:12px;border-radius:15px}.ei-course-list{display:flex;overflow-x:auto;scroll-snap-type:x proximity;padding:2px 0 8px}.ei-course-tile{flex:0 0 min(68vw,240px);scroll-snap-align:start}.ei-reader{border-radius:17px;padding:13px}.ei-reader-head{flex-wrap:wrap;gap:6px}.ei-mode{font-size:10px}.ei-stage{max-height:65svh}.ei-stage img{max-height:65svh}.ei-lock{padding:12px}.ei-lock-icon{width:36px;height:36px;font-size:23px}.ei-lock h3{font-size:13px}.ei-lock p{font-size:11px}.ei-admin-grid{grid-template-columns:1fr}.ei-foot{flex-direction:column}.ei-top-inner{padding:10px 12px}}
@media(max-width:390px){.ei-form-row{grid-template-columns:1fr}.ei-controls .ei-btn{padding:8px 11px}.ei-hint{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}

/* Scoped full-resolution reading overlay; the original uploaded bytes are never recompressed. */
.ei-stage-zoom-btn{position:absolute;inset-inline-end:12px;bottom:12px;z-index:2;display:inline-flex;align-items:center;gap:8px;min-height:40px;border-radius:12px;border:1px solid rgba(214,229,221,.9);background:rgba(255,255,255,.95);color:#16473b;font-size:12px;font-weight:800;padding:8px 12px;box-shadow:0 3px 14px rgba(0,0,0,.16);backdrop-filter:blur(8px)}
.ei-stage-zoom-btn:hover{background:#fff}.ei-stage-zoom-btn span{font-size:19px}.ei-stage img[data-zoom-image]{cursor:zoom-in}
.ei-zoom{position:fixed;inset:0;width:100vw;height:100dvh;max-width:100vw;max-height:100dvh;margin:0;padding:0;border:0;background:#101f1b;color:#fff;overflow:hidden;overscroll-behavior:contain;direction:rtl;isolation:isolate}
.ei-zoom::backdrop{background:rgba(4,15,12,.95)}
.ei-zoom-toolbar{height:64px;position:absolute;top:0;left:0;right:0;z-index:8;display:flex;align-items:center;gap:12px;padding:8px clamp(10px,2vw,24px);background:rgba(17,39,32,.96);border-bottom:1px solid #38564c}
.ei-zoom-toolbar-title{font-weight:700;font-size:13px;white-space:nowrap}.ei-zoom-actions{display:flex;align-items:center;justify-content:flex-start;gap:7px;margin-inline-start:auto;min-width:0}
.ei-zoom-tool{display:inline-flex;align-items:center;justify-content:center;min-width:39px;min-height:40px;background:#264a3e;color:#fff;border:1px solid #4f766a;border-radius:10px;padding:5px 12px;font-weight:700;font-size:13px;white-space:nowrap}.ei-zoom-tool:disabled{opacity:.45;cursor:not-allowed}.ei-zoom-tool:not(:disabled):hover{background:#366557}
.ei-zoom-exit{background:#f4f6f3;color:#16392c;border-color:transparent;font-size:17px;flex:0 0 auto}.ei-zoom-percent{font-size:12px;min-width:48px;text-align:center;font-variant-numeric:tabular-nums}
.ei-zoom-canvas{position:absolute;top:64px;left:0;right:0;bottom:38px;overflow:hidden;background:#10211b;touch-action:none;user-select:none;overscroll-behavior:contain;cursor:grab;outline-offset:-3px}
.ei-zoom-canvas:active{cursor:grabbing}.ei-zoom-canvas img[data-ei-zoom-image]{position:absolute;left:0;top:0;max-width:none;max-height:none;width:auto;height:auto;transform-origin:0 0;margin:0;pointer-events:none;user-select:none;will-change:transform}
.ei-zoom-loading{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:24px;color:#fff;font-size:13px;pointer-events:none}
.ei-zoom-help{position:absolute;bottom:0;left:0;right:0;z-index:5;background:#152d24;color:#d4e2dc;text-align:center;min-height:38px;display:flex;align-items:center;justify-content:center;padding:5px 12px;margin:0;font-size:11px;line-height:1.6}
@media(max-width:690px){.ei-zoom-toolbar{min-height:96px;height:96px;flex-wrap:wrap;align-content:center;justify-content:space-between;gap:5px 8px;padding:6px 10px}.ei-zoom-toolbar-title{font-size:12px;max-width:calc(100% - 60px);margin-inline-start:auto}.ei-zoom-actions{width:100%;justify-content:center;gap:5px;margin:0}.ei-zoom-tool{min-height:38px;min-width:37px;padding:5px 9px;font-size:11px}.ei-zoom-percent{min-width:45px}.ei-zoom-canvas{top:96px;bottom:53px}.ei-zoom-help{min-height:53px;font-size:10px}.ei-stage-zoom-btn{min-height:40px;inset-inline-end:8px;bottom:8px}}
@media(max-width:370px){.ei-zoom-tool{padding:5px 7px;min-width:34px}.ei-zoom-toolbar-title{font-size:11px}.ei-zoom-percent{min-width:40px}}