/* دور ۱۱ (A2) — آموزش سلسله‌مراتبی (مسیر/دوره/فصل/درس) — هماهنگ با تم روشن آکادمی (Aethera):
   سفید، تیتر Instrument Serif/Vazirmatn، دکمه‌ی قرصی مشکی، کارت‌های شیشه‌ای روشن */
.ah-page{max-width:1180px}
.ah-wrap{padding:8px 0 40px;color:#111}
.ah-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.82rem;color:#6f6f6f;margin:6px 0 22px}
.ah-crumb a{color:#444;text-decoration:none;border-bottom:1px dashed transparent}
.ah-crumb a:hover{border-color:#999}
.ah-crumb i{font-size:.6rem;opacity:.5}
.ah-crumb [aria-current]{color:#000;font-weight:700}
.ah-kicker{display:inline-block;font-size:.78rem;color:#6f6f6f;margin-bottom:6px}
.ah-kicker a{color:#333}
.ah-head{display:flex;gap:20px;align-items:flex-start;padding:26px;border-radius:28px;background:rgba(255,255,255,.86);border:1px solid rgba(0,0,0,.07);
  box-shadow:0 18px 50px rgba(0,0,0,.05);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);margin-bottom:22px}
.ah-head h1,.ah-info h1,.ah-lhead h1{margin:0;font:800 clamp(1.6rem,3.4vw,2.4rem)/1.35 'Vazirmatn',sans-serif;letter-spacing:0;color:#000}
.ah-ico{flex:0 0 64px;height:64px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;background:#000;color:#fff}
.ah-bignum{flex:0 0 76px;height:76px;border-radius:24px;display:flex;align-items:center;justify-content:center;font:400 2.6rem 'Instrument Serif','Vazirmatn',serif;background:#000;color:#fff}
.ah-en{display:block;font:600 .7rem 'Inter',sans-serif;letter-spacing:.16em;color:#888;margin-top:4px;text-transform:uppercase}
.ah-lead{margin:10px 0 0;color:#555;line-height:2;max-width:760px}
.ah-stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.ah-stats span{padding:6px 12px;border-radius:999px;background:#f3f3f1;font-size:.8rem;color:#555}
.ah-stats b{color:#000;margin-inline-end:3px}
.ah-subs{display:flex;flex-wrap:wrap;gap:8px;margin:-6px 0 20px}
.ah-subs a{padding:8px 14px;border-radius:999px;border:1px solid rgba(0,0,0,.12);text-decoration:none;color:#222;font-size:.85rem;background:#fff;transition:background .2s,border-color .2s}
.ah-subs a:hover{border-color:#000;background:#fafafa}

/* کارت دوره (صفحه‌ی مسیر) */
.ah-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.ah-card{display:flex;flex-direction:column;border-radius:24px;overflow:hidden;background:#fff;border:1px solid rgba(0,0,0,.08);text-decoration:none;color:#111;
  transition:transform .3s cubic-bezier(.22,.9,.32,1),box-shadow .3s}
.ah-card:hover{transform:translateY(-5px);box-shadow:0 22px 44px rgba(0,0,0,.09)}
.ah-card-media{position:relative;aspect-ratio:16/9;background:#eee;overflow:hidden}
.ah-card-media img,.ah-card-media .r7-img-ph,.ah-hoverv{width:100%;height:100%;object-fit:cover;display:block}
.ah-hoverv{position:absolute;inset:0}
.ah-pv,.ah-lvl{position:absolute;top:10px;padding:4px 10px;border-radius:999px;font-size:.72rem;background:rgba(0,0,0,.72);color:#fff;z-index:1}
.ah-pv{right:10px}.ah-lvl{left:10px;background:rgba(255,255,255,.9);color:#000}
.ah-card-body{display:flex;flex-direction:column;gap:8px;padding:16px 18px 18px;flex:1}
.ah-card-body h3{margin:0;font-size:1.05rem;line-height:1.7}
.ah-card-body p{margin:0;color:#666;font-size:.85rem;line-height:1.9;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ah-meta{display:flex;flex-wrap:wrap;gap:6px 12px;font-size:.76rem;color:#777}
.ah-meta i{margin-inline-end:4px;opacity:.7}
.ah-card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:10px;border-top:1px solid rgba(0,0,0,.06)}
.ah-price{font-weight:800;color:#000}.ah-free{font-weight:800;color:#0a7d3c}
.ah-go{font-size:.8rem;color:#333}

/* صفحه‌ی دوره */
.ah-course-hero{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:22px;align-items:start;margin-bottom:22px}
.ah-media{position:relative;border-radius:26px;overflow:hidden;background:#111;aspect-ratio:16/9}
.ah-media img{width:100%;height:100%;object-fit:cover;display:block}
.ah-video{width:100%;aspect-ratio:16/9;border:0;display:block;background:#000;border-radius:inherit}
.ah-play{position:absolute;inset:auto 50% 50% auto;transform:translate(50%,50%);display:flex;align-items:center;gap:10px;padding:14px 22px;border-radius:999px;border:0;cursor:pointer;
  background:rgba(255,255,255,.92);color:#000;font:700 .92rem 'Vazirmatn',sans-serif;box-shadow:0 12px 30px rgba(0,0,0,.3);transition:transform .25s}
.ah-play:hover{transform:translate(50%,50%) scale(1.05)}
.ah-play i{width:34px;height:34px;border-radius:50%;background:#000;color:#fff;display:flex;align-items:center;justify-content:center;font-size:.8rem}
.ah-info{padding:24px;border-radius:26px;background:#fff;border:1px solid rgba(0,0,0,.08)}
.ah-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:18px 0}
.ah-facts div{padding:10px 12px;border-radius:14px;background:#f6f6f4}
.ah-facts dt{font-size:.74rem;color:#777;margin-bottom:2px}.ah-facts dd{margin:0;font-weight:700;color:#000}
.ah-buy{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.ah-buy .ah-price,.ah-buy .ah-free{font-size:1.25rem}
.ah-cta{display:inline-flex;align-items:center;gap:8px;padding:.95rem 2rem;border-radius:999px;background:#000;color:#fff;border:0;text-decoration:none;font:700 .95rem 'Vazirmatn',sans-serif;cursor:pointer;transition:transform .2s,box-shadow .2s}
.ah-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,0,0,.2)}
.ah-cta:focus-visible,.ah-chapter:focus-visible,.ah-lesson:focus-visible,.ah-card:focus-visible{outline:2px solid #000;outline-offset:3px}
.ah-prog{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:.78rem;color:#555}
.ah-prog span{flex:1;height:8px;border-radius:99px;background:#eee;overflow:hidden}.ah-prog i{display:block;height:100%;background:#000;border-radius:inherit}
.ah-cols{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:18px}
.ah-box{padding:22px 24px;border-radius:24px;background:#fff;border:1px solid rgba(0,0,0,.08);margin-bottom:18px}
.ah-box h2{display:flex;align-items:center;gap:10px;margin:0 0 14px;font-size:1.08rem;color:#000}
.ah-box h2 i{width:34px;height:34px;border-radius:11px;background:#000;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:.85rem}
.ah-box h2 small{font-weight:400;color:#888}
.ah-text p{margin:0 0 1em;line-height:2.05;color:#333}
.ah-feats{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.ah-feats li{display:flex;gap:10px;align-items:flex-start;line-height:1.8;color:#222}
.ah-feats i{flex:0 0 22px;height:22px;border-radius:50%;background:#e9f6ee;color:#0a7d3c;display:flex;align-items:center;justify-content:center;font-size:.65rem;margin-top:4px}
.ah-chapters,.ah-lessons{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.ah-chapter,.ah-lesson{display:grid;grid-template-columns:44px minmax(0,1fr) auto auto;align-items:center;gap:14px;padding:14px 16px;border-radius:18px;
  background:#fafaf9;border:1px solid rgba(0,0,0,.06);text-decoration:none;color:#111;transition:background .2s,border-color .2s,transform .2s}
.ah-chapter:hover,.ah-lesson:hover{background:#fff;border-color:rgba(0,0,0,.25);transform:translateX(-3px)}
.ah-num{width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:#000;color:#fff;font-weight:800}
.ah-ct{display:flex;flex-direction:column;gap:2px;min-width:0}
.ah-ct b{font-size:.98rem;line-height:1.7}.ah-ct small{color:#777;font-size:.8rem;line-height:1.7}
.ah-cm{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.78rem;color:#666;justify-content:flex-end}
.ah-done{color:#0a7d3c}
.ah-arrow{opacity:.35}
.ah-lessons .ah-lesson{grid-template-columns:44px minmax(0,1fr) auto 104px}
.ah-dur{font-size:.8rem;color:#666;white-space:nowrap}
.ah-st{display:flex;align-items:center;gap:6px;font-size:.78rem;color:#888;justify-content:flex-end}
.ah-st em{font-style:normal}
.ah-lesson.is-done .ah-num{background:#0a7d3c}.ah-lesson.is-done .ah-st{color:#0a7d3c}
.ah-lesson.is-locked .ah-num{background:#bbb}.ah-lesson.is-locked .ah-st{color:#a33}
.ah-tag{display:inline-block;padding:2px 8px;border-radius:999px;background:#fff4d6;color:#7a5200;font-size:.7rem;font-weight:700;width:max-content}
.ah-pager{display:flex;justify-content:space-between;gap:12px;margin:22px 0}
.ah-nav{display:flex;flex-direction:column;gap:4px;max-width:48%;padding:14px 18px;border-radius:18px;background:#fff;border:1px solid rgba(0,0,0,.08);text-decoration:none;color:#000;transition:border-color .2s}
.ah-nav:hover{border-color:#000}.ah-nav small{color:#777;font-size:.76rem}.ah-nav--next{text-align:left;margin-inline-start:auto}
.ah-note{color:#777;font-size:.86rem}

/* درس */
.ah-lhead{margin-bottom:16px}
.ah-lmeta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:10px;font-size:.82rem;color:#666}
.ah-watch{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;border:1px solid rgba(0,0,0,.15);background:#fff;cursor:pointer;font:600 .8rem 'Vazirmatn',sans-serif;color:#333}
.ah-watch.on{background:#e9f6ee;border-color:#0a7d3c;color:#0a7d3c}
.ah-player{border-radius:24px;overflow:hidden;background:#000;margin-bottom:18px;box-shadow:0 20px 50px rgba(0,0,0,.18)}
.ah-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
.ah-img{padding:0;border:0;border-radius:14px;overflow:hidden;cursor:zoom-in;background:#eee}.ah-img img{width:100%;height:100%;object-fit:cover;display:block}
.ah-files{display:grid;gap:8px}
.ah-frow{display:grid;grid-template-columns:minmax(0,2.2fr) .7fr .8fr 230px;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:#fafaf9;border:1px solid rgba(0,0,0,.05);font-size:.86rem}
.ah-fhead{background:transparent;border:0;color:#888;font-size:.76rem;padding-block:0}
.ah-fname{display:flex;align-items:center;gap:10px;min-width:0;word-break:break-word}.ah-fname i{font-size:1.25rem;color:#b3261e}
.ah-fname small{display:block;color:#888}
.ah-fact{display:flex;gap:6px;justify-content:flex-end}
.ah-locked{text-align:center;padding:46px 20px;border-radius:26px;background:#fff;border:1px dashed rgba(0,0,0,.2);margin-bottom:18px}
.ah-locked i{font-size:2.2rem;color:#000}.ah-locked h2{margin:12px 0 6px}.ah-locked p{color:#666;line-height:2;margin:0 0 18px}
.ah-cform{display:grid;gap:10px;margin-bottom:16px}
.ah-cform textarea{width:100%;padding:12px 14px;border-radius:14px;border:1px solid rgba(0,0,0,.15);font:inherit;resize:vertical;background:#fff;color:#111}
.ah-cform button{justify-self:end}
.ah-replying{font-size:.82rem;color:#555}
.ah-link{background:none;border:0;padding:0;color:#000;text-decoration:underline;cursor:pointer;font:inherit}
.ah-cmts,.ah-cmts ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.ah-cmts ul{margin-top:10px;padding-inline-start:18px;border-inline-start:2px solid #eee}
.ah-cmt{padding:12px 14px;border-radius:16px;background:#fafaf9}
.ah-cmt-h{display:flex;gap:8px;align-items:center;font-size:.85rem}.ah-cmt-h small{color:#999;margin-inline-start:auto}
.ah-cmt p{margin:6px 0;line-height:1.9;color:#333}
.ah-reply{background:none;border:0;color:#555;cursor:pointer;font:600 .76rem 'Vazirmatn',sans-serif;padding:0}
.ah-modal{position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,.72);display:flex;align-items:center;justify-content:center;padding:16px}
.ah-modal-box{width:min(960px,100%);max-height:92vh;background:#fff;border-radius:20px;overflow:auto;padding:14px}
.ah-modal-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;color:#000}.ah-modal-head span{display:flex;gap:6px}
.ah-pvframe{width:100%;height:75vh;border:0;border-radius:12px;background:#f2f2f2}
/* دکمه‌ها روی تم روشن آکادمی: کنتراست کافی */
.ah-wrap .r7-btn{background:#fff;color:#111;border:1px solid rgba(0,0,0,.16);box-shadow:none}
.ah-wrap .r7-btn:hover{border-color:#000;background:#f6f6f4;color:#000}
.ah-wrap .r7-btn.solid,.ah-fact a.r7-btn{background:#000;color:#fff;border-color:#000}
.ah-wrap .r7-btn.solid:hover,.ah-fact a.r7-btn:hover{background:#222;color:#fff}
.ah-wrap .r7-btn:focus-visible{outline:2px solid #000;outline-offset:2px}
@media (max-width:860px){
  .ah-course-hero,.ah-cols{grid-template-columns:1fr}
  .ah-head{flex-direction:column;padding:20px}
  .ah-ico,.ah-bignum{flex:none;width:60px;height:60px;font-size:1.5rem}
  .ah-bignum{font-size:2.2rem}
  .ah-chapter,.ah-lessons .ah-lesson{grid-template-columns:38px minmax(0,1fr) auto}
  .ah-num{width:38px;height:38px;border-radius:12px}
  .ah-cm,.ah-arrow{grid-column:2/-1;justify-content:flex-start}
  .ah-arrow{display:none}
  .ah-lessons .ah-dur{grid-column:2}.ah-lessons .ah-st{grid-column:3;grid-row:1}
  .ah-frow{grid-template-columns:1fr auto;}
  .ah-fhead{display:none}
  .ah-frow>span:nth-child(2),.ah-frow>span:nth-child(3){font-size:.76rem;color:#777}
  .ah-fact{grid-column:1/-1;justify-content:flex-start}
  .ah-facts{grid-template-columns:1fr 1fr}
  .ah-nav{max-width:100%}
}
@media (prefers-reduced-motion:reduce){.ah-card,.ah-chapter,.ah-lesson,.ah-cta,.ah-play{transition:none}}

/* ============================================================================
   دور ۱۲ — Tree دوره، صفحه‌ی کامل فصل و درس (پیشرفت، امتیاز، رضایت‌مندی، سطح، پلیر حرفه‌ای)
   ============================================================================ */
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.ah-bar{height:8px;border-radius:99px;background:#ececea;overflow:hidden;min-width:60px}
.ah-bar i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#111,#3a3a3a);transition:width .5s cubic-bezier(.22,.9,.32,1)}
.ah-stars{display:inline-flex;gap:2px;color:#f5a524;font-size:.78rem;vertical-align:middle}
.ah-lvchip{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:.72rem;font-weight:700;background:#eef7f1;color:#0a7d3c;white-space:nowrap}
.ah-lvchip::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.ah-lv--intermediate{background:#fff4e0;color:#9a5b00}.ah-lv--advanced{background:#fde8ea;color:#b3261e}
.ah-tag--draft{background:#eee;color:#555}

/* --- Tree دوره --- */
.ah-tree-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.ah-tree-head h2{margin:0}
.ah-tree-tools{display:flex;gap:14px;font-size:.82rem}
.ah-tree{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.ah-tnode{border-radius:20px;border:1px solid rgba(0,0,0,.07);background:#fafaf9;overflow:hidden;transition:border-color .2s,background .2s,box-shadow .2s}
.ah-tnode.is-open{background:#fff;border-color:rgba(0,0,0,.16);box-shadow:0 14px 34px rgba(0,0,0,.05)}
.ah-thead{position:relative}
.ah-ttog{width:100%;display:grid;grid-template-columns:44px minmax(0,1fr) auto 24px;align-items:center;gap:14px;padding:14px 16px;border:0;background:none;
  text-align:right;cursor:pointer;font:inherit;color:#111}
.ah-ttog:focus-visible{outline:2px solid #000;outline-offset:-3px;border-radius:20px}
.ah-chev{transition:transform .3s cubic-bezier(.22,.9,.32,1);opacity:.5}
.ah-tnode.is-open .ah-chev{transform:rotate(180deg);opacity:1}
.ah-tprog{display:block;padding:0 76px 12px 56px}.ah-tprog .ah-bar{height:5px}
.ah-tbody{padding:0 16px 14px;animation:ahDrop .28s ease}
@keyframes ahDrop{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.ah-tlessons{list-style:none;margin:0;padding:6px 0 0;display:grid;gap:4px;border-top:1px dashed rgba(0,0,0,.1)}
.ah-tlesson{display:grid;grid-template-columns:48px 22px minmax(0,1fr) auto 104px;align-items:center;gap:10px;padding:10px 12px;border-radius:14px;
  text-decoration:none;color:#222;transition:background .18s,transform .18s}
.ah-tlesson:hover{background:#f4f4f2;transform:translateX(-3px)}
.ah-tlesson:focus-visible{outline:2px solid #000;outline-offset:1px}
.ah-tn{font:700 .8rem 'Vazirmatn',sans-serif;color:#888;text-align:center;padding:4px 0;border-radius:9px;background:#f0f0ee}
.ah-ticon{color:#555;text-align:center}
.ah-tt{min-width:0;line-height:1.7;font-size:.92rem}
.ah-tlesson.is-done .ah-tn{background:#e9f6ee;color:#0a7d3c}.ah-tlesson.is-locked{color:#888}.ah-tlesson.is-locked .ah-ticon{color:#bbb}
.ah-tch{display:inline-flex;align-items:center;gap:8px;margin-top:10px;padding:8px 14px;border-radius:999px;background:#f3f3f1;color:#111;text-decoration:none;font-size:.82rem;font-weight:600}
.ah-tch:hover{background:#000;color:#fff}
.ah-st.is-done{color:#0a7d3c}.ah-st.is-locked{color:#a33}.ah-st.is-part{color:#9a5b00}

/* --- چیدمان دوستونه‌ی فصل/درس --- */
.ah-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:18px;align-items:start}
.ah-side{display:grid;gap:14px;position:sticky;top:96px}
.ah-side-card{padding:18px 20px;border-radius:22px;background:#fff;border:1px solid rgba(0,0,0,.08)}
.ah-side-card h3{display:flex;align-items:center;gap:8px;margin:0 0 12px;font-size:.92rem;color:#000}
.ah-side-card h3 i{width:28px;height:28px;border-radius:9px;background:#f1f1ef;display:inline-flex;align-items:center;justify-content:center;font-size:.75rem}
.ah-side-card .ah-note{margin:10px 0 0;line-height:1.9}
.ah-ok{color:#0a7d3c!important}
.ah-prog-big{display:flex;align-items:baseline;justify-content:space-between;gap:8px;margin-bottom:8px}
.ah-prog-big b{font:800 1.9rem 'Vazirmatn',sans-serif;color:#000}.ah-prog-big small{color:#777;font-size:.78rem}
.ah-cta--sm{padding:.7rem 1.4rem;font-size:.86rem;margin-top:12px;width:100%;justify-content:center;box-sizing:border-box}
.ah-rate-top{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.ah-rate-avg{font:800 2.2rem 'Vazirmatn',sans-serif;color:#000;line-height:1}
.ah-rate-top small{display:block;color:#888;font-size:.74rem;margin-top:3px}
.ah-dist{list-style:none;margin:0;padding:0;display:grid;gap:5px}
.ah-dist li{display:grid;grid-template-columns:42px minmax(0,1fr) 22px;align-items:center;gap:8px;font-size:.74rem;color:#666}
.ah-dist li i{color:#f5a524;font-size:.6rem}.ah-dist .ah-bar{height:6px}.ah-dist .ah-bar i{background:#f5a524}
.ah-sat{display:flex;align-items:center;gap:12px;margin-top:14px;padding-top:14px;border-top:1px solid rgba(0,0,0,.06)}
.ah-sat-ring{--p:0;width:58px;height:58px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;
  background:conic-gradient(#0a7d3c calc(var(--p)*1%),#ececea 0)}
.ah-sat-ring b{width:44px;height:44px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;font-size:.8rem;color:#0a7d3c}
.ah-sat small{display:block;color:#777;font-size:.74rem;line-height:1.8}
.ah-levels{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.ah-levels li{display:flex;flex-direction:column;gap:6px;font-size:.74rem;color:#999;text-align:center}
.ah-levels li span{height:8px;border-radius:99px;background:#ececea}
.ah-levels li.on span{background:#111}.ah-levels li.cur{color:#000;font-weight:800}
.ah-teacher{display:flex;align-items:center;gap:12px}.ah-teacher small{display:block;color:#777;font-size:.76rem;line-height:1.8}
.ah-av{width:30px;height:30px;border-radius:50%;flex:none;display:inline-flex;align-items:center;justify-content:center;background:#111;color:#fff;font-size:.8rem;font-weight:700}
.ah-av--lg{width:48px;height:48px;font-size:1.1rem}
.ah-lmeta2{display:flex;flex-wrap:wrap;gap:4px 12px;align-items:center}
.ah-type i{opacity:.7}
.ah-mini{display:block;max-width:220px;margin-top:4px}.ah-mini .ah-bar{height:4px}
.ah-sum{margin:0;line-height:2.1;color:#333;font-size:.98rem}

/* --- نظر + امتیاز --- */
.ah-rate-in{display:inline-flex;flex-direction:row-reverse;justify-content:flex-end;gap:2px;border:0;margin:0;padding:0;align-items:center;flex-wrap:wrap}
.ah-rate-in legend{float:right;margin-inline-end:10px;font-size:.84rem;color:#444;padding:0}
.ah-rate-in input{position:absolute;opacity:0;width:1px;height:1px}
.ah-rate-in label{cursor:pointer;font-size:1.35rem;color:#d6d6d3;padding:2px;transition:color .15s,transform .15s}
.ah-rate-in label:hover,.ah-rate-in label:hover~label,.ah-rate-in input:checked~label{color:#f5a524}
.ah-rate-in input:focus-visible+label{outline:2px solid #000;border-radius:6px}
.ah-rate-in label:active{transform:scale(.9)}
.ah-cmt-h .ah-stars{font-size:.68rem}

/* --- پلیر حرفه‌ای --- */
.ah-pro{position:relative;aspect-ratio:16/9;background:#000;outline:none}
.ah-pro video{width:100%;height:100%;display:block;object-fit:contain;background:#000}
.ah-bigplay{position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);width:76px;height:76px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.94);color:#000;font-size:1.5rem;box-shadow:0 14px 40px rgba(0,0,0,.4);transition:opacity .25s,transform .25s}
.ah-bigplay:hover{transform:translate(-50%,-50%) scale(1.06)}
.ah-pro.is-playing .ah-bigplay{opacity:0;pointer-events:none}
.ah-ctrl{position:absolute;inset:auto 0 0 0;display:flex;align-items:center;gap:6px;padding:26px 12px 10px;background:linear-gradient(transparent,rgba(0,0,0,.78));
  color:#fff;transition:opacity .3s}
.ah-pro.is-playing:not(:hover):not(:focus-within) .ah-ctrl{opacity:0}
.ah-ctrl button,.ah-ctrl select{background:rgba(255,255,255,.12);border:0;color:#fff;width:34px;height:34px;border-radius:10px;cursor:pointer;font-size:.85rem;flex:none}
.ah-ctrl select{width:auto;padding:0 6px;font:600 .78rem 'Vazirmatn',sans-serif}
.ah-ctrl select option{color:#000}
.ah-ctrl button:hover,.ah-ctrl select:hover{background:rgba(255,255,255,.25)}
.ah-ctrl button:focus-visible,.ah-ctrl select:focus-visible,.ah-ctrl input:focus-visible{outline:2px solid #fff;outline-offset:1px}
.ah-time{font:600 .76rem 'Vazirmatn',sans-serif;white-space:nowrap;min-width:84px;text-align:center}
.ah-ctrl input[type=range]{flex:1;min-width:60px;accent-color:#fff;height:4px;cursor:pointer}

/* --- فایل‌ها / مودال / گالری --- */
.ah-fname>span{min-width:0}.ah-fname b{font-weight:600;word-break:break-word}
.ah-fi--image{color:#2563eb!important}.ah-fi--video{color:#7c3aed!important}.ah-fi--document{color:#475569!important}
.ah-img{position:relative}.ah-img small{position:absolute;inset:auto 0 0 0;padding:6px 10px;background:linear-gradient(transparent,rgba(0,0,0,.7));color:#fff;font-size:.72rem;text-align:right}
.ah-mh-t{display:flex;align-items:center;gap:8px;min-width:0}.ah-mh-t small{color:#888;font-size:.76rem}
.ah-pvimg{max-width:100%;max-height:76vh;display:block;margin:auto;border-radius:12px}
.ah-pvvideo{background:#000;height:auto;max-height:76vh}

/* --- ناوبری سه‌بخشی درس --- */
.ah-pager--3{display:grid;grid-template-columns:1fr auto 1fr;align-items:stretch}
.ah-pager--3 .ah-nav{max-width:none}.ah-nav--mid{text-align:center;align-items:center;background:#f6f6f4}
.ah-pager--3 .ah-nav--next{margin:0}

@media (max-width:980px){
  .ah-layout{grid-template-columns:1fr}
  .ah-side{position:static;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
}
@media (max-width:860px){
  .ah-ttog{grid-template-columns:38px minmax(0,1fr) 20px;gap:10px;padding:12px}
  .ah-ttog .ah-cm{grid-column:2/3;grid-row:2;justify-content:flex-start}
  .ah-ttog .ah-chev{grid-column:3;grid-row:1}
  .ah-tprog{padding:0 60px 10px 14px}
  .ah-tbody{padding:0 10px 12px}
  .ah-tlesson{grid-template-columns:40px minmax(0,1fr) auto;gap:8px;padding:10px 8px}
  .ah-tlesson .ah-ticon{display:none}
  .ah-tlesson .ah-dur{grid-column:2;grid-row:2;font-size:.74rem}
  .ah-tlesson .ah-st{grid-column:3;grid-row:1/3}
  .ah-tlesson .ah-st em{display:none}
  .ah-pager--3{grid-template-columns:1fr 1fr}
  .ah-pager--3 .ah-nav--mid{grid-column:1/-1;grid-row:2}
  .ah-ctrl{gap:4px;padding:20px 8px 8px}
  .ah-ctrl #ahBack,.ah-ctrl #ahFwd,.ah-ctrl #ahPip{display:none}
  .ah-time{min-width:0;font-size:.68rem}
}
@media (prefers-reduced-motion:reduce){.ah-tbody{animation:none}.ah-bar i,.ah-chev,.ah-tlesson{transition:none}}

/* ===== دور ۱۴ (بخش ۲): آیکون‌های سه‌بعدی، متن غنی درس، مدرس، سطح حرفه‌ای ===== */
.ah-lv--expert{background:#efe9ff;color:#5b2bc4}
.ic3{display:inline-block;width:44px;height:44px;object-fit:contain;flex:none;vertical-align:middle}
.ic3--xs{width:22px;height:22px}.ic3--ch{width:34px;height:34px;margin-inline-start:-4px}
.ah-ico--3d{background:transparent!important;box-shadow:none}.ah-ico--3d .ic3{width:64px;height:64px}
.ah-head--cover{flex-wrap:wrap}.ah-pathcover{flex:0 0 220px;border-radius:18px;overflow:hidden;aspect-ratio:16/9;box-shadow:0 10px 30px rgba(20,40,90,.14)}
.ah-pathcover img{width:100%;height:100%;object-fit:cover;display:block}
.ah-subs a .ic3{width:20px;height:20px}
.ah-chic .ic3{width:60px;height:60px}
.ah-ticon{display:inline-flex}.ah-type,.ah-ltype{display:inline-flex;align-items:center;gap:6px}
.ah-av--img{object-fit:cover;background:#f2f4f8;border:2px solid #fff;box-shadow:0 4px 14px rgba(0,0,0,.12)}
.ah-av--xs{width:20px;height:20px;border-radius:50%;object-fit:cover;margin-inline-end:4px;vertical-align:-5px}
.ah-bio{margin:10px 0 8px;line-height:1.9}
.ah-skills{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.ah-skills span{font-size:.72rem;font-weight:600;padding:3px 10px;border-radius:999px;background:#eef3ff;color:#1d3f8f}
.ah-teachwrap .ah-side-card{margin:0;height:100%}
.ah-rich h3{font-size:1.12rem;margin:1.6em 0 .6em;padding-inline-start:12px;border-inline-start:4px solid #2156d8;line-height:1.6}
.ah-rich h3:first-child{margin-top:0}.ah-rich h4{font-size:1rem;margin:1.2em 0 .4em;color:#1d3f8f}
.ah-rich ul,.ah-rich ol{margin:0 0 1.1em;padding-inline-start:1.4em;line-height:2}.ah-rich li{margin:.2em 0}
.ah-rich code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.86em;background:#f1f3f8;padding:1px 6px;border-radius:6px;direction:ltr;unicode-bidi:isolate}
.ah-code{margin:0 0 1.2em;border-radius:14px;overflow:hidden;background:#0f172a;box-shadow:0 8px 24px rgba(15,23,42,.18)}
.ah-code figcaption{display:flex;justify-content:space-between;align-items:center;padding:6px 12px;font:600 .74rem/1.6 ui-monospace,monospace;color:#94a3b8;background:#111c33;direction:ltr}
.ah-copy{background:none;border:0;color:#cbd5e1;cursor:pointer;padding:4px 6px;border-radius:6px}.ah-copy:hover{background:#1e293b;color:#fff}
.ah-code pre{margin:0;padding:14px 16px;overflow:auto;max-height:520px}.ah-code code{background:none;color:#e2e8f0;padding:0;font-size:.84rem;line-height:1.75;white-space:pre}
.ah-teachers{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.ah-tcard{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:22px 16px;border-radius:20px;background:#fff;border:1px solid #e6ebf4;text-decoration:none;color:inherit;transition:transform .2s,box-shadow .2s}
.ah-tcard:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(20,40,90,.12)}
.ah-tcard img{width:88px;height:88px;border-radius:50%;object-fit:cover}.ah-tcard small{color:#667;font-size:.78rem}.ah-tcard .ah-skills{justify-content:center}
.ah-tcnt{font-size:.78rem;color:#2156d8;font-weight:700}
.ah-head--teacher{align-items:center}.ah-tavatar{width:120px;height:120px;border-radius:50%;object-fit:cover;flex:none;box-shadow:0 12px 30px rgba(20,40,90,.18);border:4px solid #fff}
@media (max-width:640px){.ah-pathcover{flex-basis:100%}.ah-tavatar{width:84px;height:84px}.ah-code pre{max-height:380px}}
.ah-ct b .ic3--ch{width:30px;height:30px;margin:0 0 0 8px;vertical-align:-9px}
.ah-media .ah-play{inset:auto auto 18px 18px;transform:none;padding:10px 18px}
.ah-media .ah-play:hover{transform:translateY(-2px)}
.ah-colstack{display:flex;flex-direction:column;gap:16px;min-width:0}.ah-colstack .ah-side-card{margin:0}