/* Extracted common theme source: ACS AI Digital Master lesson page */

:root{--bg:#f5f7ff;--panel:#fff;--text:#111827;--muted:#4b5563;--line:#e5e7eb;--primary:#7c3aed;--pink:#ec4899;--blue:#2563eb;--green:#16a34a;--orange:#f59e0b;--shadow:0 18px 45px rgba(38,51,77,.11);--radius:24px;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Hind",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--text);background:radial-gradient(circle at top left,rgba(124,58,237,.10),transparent 28%),radial-gradient(circle at top right,rgba(236,72,153,.09),transparent 26%),linear-gradient(180deg,#fbfcff 0%,#f5f7ff 100%);line-height:1.68}a{color:var(--blue);text-decoration:none}.wrap{max-width:var(--max);margin:auto;padding:0 18px}.top-progress{position:fixed;top:0;left:0;height:4px;width:0;background:linear-gradient(90deg,var(--primary),var(--pink));z-index:1000}.topbar{position:sticky;top:0;z-index:999;backdrop-filter:blur(14px);background:rgba(255,255,255,.88);border-bottom:1px solid rgba(229,231,235,.8)}.topbar-inner{max-width:var(--max);margin:auto;padding:12px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:12px;min-width:0}.logo{width:58px;height:58px;border-radius:50%;background:#fff;display:grid;place-items:center;box-shadow:0 10px 24px rgba(15,23,42,.14);border:2px solid rgba(124,58,237,.18);overflow:hidden;flex:none}.logo img{width:100%;height:100%;object-fit:cover;display:block}.brand-title{margin:0;font-size:clamp(1.08rem,2.4vw,1.42rem);font-weight:900;line-height:1.05;letter-spacing:.015em;color:#0f172a;text-transform:uppercase}.top-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:wrap}.nav-chip{font-size:.95rem;font-weight:800;padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);white-space:nowrap}.lang-switch{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}.lang-pill{display:inline-flex;align-items:center;justify-content:center;padding:7px 9px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:.82rem;font-weight:900;color:#374151;line-height:1}.lang-pill.active{background:linear-gradient(135deg,var(--primary),var(--pink));color:#fff;border-color:transparent}.lang-pill.soon{opacity:.78;background:#f8fafc;color:#64748b}.hero{padding:34px 0 22px}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}.hero-card,.panel{background:rgba(255,255,255,.92);border:1px solid rgba(229,231,235,.95);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-card{padding:28px;background:linear-gradient(135deg,rgba(124,58,237,.08),rgba(236,72,153,.08)),#fff}.eyebrow{display:inline-flex;align-items:center;padding:8px 12px;border-radius:999px;background:rgba(124,58,237,.10);color:var(--primary);font-weight:900;font-size:.92rem;margin-bottom:14px}.global-badge{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;padding:9px 12px;border-radius:999px;background:rgba(22,163,74,.10);color:#166534;font-weight:900;font-size:.92rem;border:1px solid rgba(22,163,74,.18)}.display-title{margin:0 0 10px;font-size:clamp(2rem,5vw,3.4rem);line-height:1.02;font-weight:900;letter-spacing:-.025em;text-transform:uppercase}.lesson-title{margin:6px 0 12px;font-size:clamp(1.35rem,3vw,2rem);line-height:1.18;font-weight:900;color:#1f2937}.subtitle{margin:0 0 16px;color:var(--muted);font-size:1.02rem}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;text-decoration:none;cursor:pointer;padding:14px 18px;border-radius:16px;font-weight:900;transition:.2s ease;min-height:48px}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--pink));color:#fff;box-shadow:0 10px 24px rgba(124,58,237,.25)}.btn-secondary{background:#fff;color:var(--text);border:1px solid var(--line)}.btn:hover{transform:translateY(-1px)}.hero-side{padding:22px;display:grid;gap:16px;align-content:start}.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.mini{padding:14px;border-radius:18px;background:linear-gradient(180deg,#fff,#fafaff);border:1px solid var(--line)}.mini .label{font-size:.86rem;color:var(--muted);margin:0 0 5px}.mini .value{margin:0;font-weight:900}.flow-card{padding:16px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(180deg,#fff,#faf7ff)}.flow-title{margin:0 0 10px;font-size:1rem}.flow-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.pill{padding:10px 12px;border-radius:999px;font-weight:900;font-size:.92rem;border:1px solid var(--line);background:#fff}.arrow{font-size:1.2rem;color:var(--primary);font-weight:900}.content{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start;padding-bottom:34px}.main{display:grid;gap:18px}.sticky-nav{position:sticky;top:90px;padding:18px;border-radius:24px;background:rgba(255,255,255,.94);border:1px solid var(--line);box-shadow:var(--shadow)}.sticky-nav h3{margin:0 0 14px;font-size:1.05rem}.toc{list-style:none;padding:0;margin:0;display:grid;gap:8px}.toc a{display:block;padding:10px 12px;border-radius:12px;color:#1f2937;background:#fafaff;border:1px solid transparent;font-weight:800}.toc a:hover,.toc a.is-active{border-color:#ddd6fe;background:#f5f3ff}.reel-card,.translation-card{margin-top:14px;padding:14px;border-radius:18px;border:1px solid #e9d5ff}.reel-card{background:linear-gradient(135deg,rgba(124,58,237,.10),rgba(236,72,153,.12))}.translation-card{background:linear-gradient(135deg,rgba(37,99,235,.08),rgba(22,163,74,.08));border-color:#dbeafe}.reel-card h3,.translation-card h3{margin:0 0 8px;font-size:1rem}.reel-card h3{color:#6d28d9}.translation-card h3{color:#1d4ed8}.reel-card p,.translation-card p{margin:0;font-size:.94rem;color:#374151;line-height:1.45}section.block{padding:24px;background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px}.section-tag{padding:6px 10px;border-radius:999px;background:#f3f4f6;color:#374151;font-size:.82rem;font-weight:900;white-space:nowrap}h2{font-size:clamp(1.25rem,2vw,1.65rem);line-height:1.2;margin:0}h3{line-height:1.25}p{margin:0 0 12px}ul{margin:0;padding-left:22px}li{margin:6px 0}.lead{font-size:1.05rem;color:#1f2937}.diagram{margin-top:16px;padding:14px;border-radius:22px;background:linear-gradient(180deg,#fcfcff,#f7f6ff);border:1px solid var(--line);overflow:auto}.diagram svg{width:100%;height:auto;display:block}.diagram svg text{font-family:"Hind",Arial,sans-serif}.caption{margin-top:10px;color:var(--muted);font-size:.94rem}.cards-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:12px}.cards-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:12px}.card{padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}.card h3{margin:0 0 8px;font-size:1.08rem}.prompt{position:relative;background:#0f172a;color:#e5e7eb;border-radius:20px;padding:18px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94rem;line-height:1.6;border:1px solid #1f2937;margin-top:12px;overflow:auto;white-space:pre-wrap}.copy-btn{position:absolute;right:12px;top:12px;border:none;padding:9px 12px;border-radius:12px;background:#1f2937;color:#fff;font-weight:900;cursor:pointer}.checklist{display:grid;gap:10px;margin-top:10px}.check{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border:1px solid var(--line);background:#fff;border-radius:16px}.badge{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;flex:none;font-weight:900;color:#fff;background:linear-gradient(135deg,var(--primary),var(--pink))}.quiz{display:grid;gap:16px}.q{border:1px solid var(--line);border-radius:18px;padding:16px;background:#fff}.q h3{margin:0 0 10px;font-size:1.06rem}.option{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;margin-top:10px;background:#fafaff}.option input{accent-color:var(--primary)}.quiz-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.result{padding:14px 16px;border-radius:16px;background:#f5f3ff;border:1px solid #ddd6fe;font-weight:900}.next-card{padding:18px;border-radius:22px;background:linear-gradient(135deg,rgba(124,58,237,.08),rgba(236,72,153,.10));border:1px solid #e9d5ff;display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;align-items:center}.footer{margin-top:12px;background:linear-gradient(135deg,rgba(124,58,237,.08),rgba(236,72,153,.08)),#fff;color:#111827;border-top:1px solid #e5e7eb}.footer-top{max-width:1320px;margin:auto;display:grid;grid-template-columns:1.1fr 1.2fr 1.2fr 1.1fr .9fr .9fr .9fr .8fr 1.4fr 1fr;gap:0;border-left:1px solid #e5e7eb;border-right:1px solid #e5e7eb;background:rgba(255,255,255,.78)}.foot-col{padding:24px 16px;text-align:center;border-right:1px solid #e5e7eb;min-height:120px;display:flex;align-items:center;justify-content:center;font-size:.98rem;line-height:1.5;word-break:break-word}.foot-col:last-child{border-right:none}.footer a{color:#4f46e5;font-weight:900}.footer-bottom{padding:16px 18px 22px;text-align:center;color:#4b5563;font-size:.94rem;border-top:1px solid #e5e7eb;background:rgba(255,255,255,.72)}
@media(max-width:1100px){.hero-grid,.content{grid-template-columns:1fr}.sticky-nav{position:static}.footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.cards-2,.cards-3,.mini-grid{grid-template-columns:1fr}.top-actions{display:none}.topbar-inner{padding:10px 14px}.brand-title{font-size:1rem}.logo{width:54px;height:54px}.hero-card,.hero-side,section.block{padding:18px}.global-badge{border-radius:14px;align-items:flex-start}.display-title{font-size:2rem}.lesson-title{font-size:1.25rem}.footer-top{grid-template-columns:1fr}.foot-col{min-height:auto}.nav-chip{display:none}.section-head{display:block}.section-tag{display:inline-flex;margin-top:10px}}

/* ACS Social Share Patch */
.acs-share-card{
  margin:22px 0 4px;
  padding:22px;
  border-radius:26px;
  border:1px solid rgba(229,231,235,.95);
  background:
    radial-gradient(circle at top left,rgba(124,58,237,.13),transparent 34%),
    radial-gradient(circle at top right,rgba(236,72,153,.12),transparent 30%),
    linear-gradient(180deg,#ffffff 0%,#fbfaff 100%);
  box-shadow:0 18px 45px rgba(38,51,77,.11);
}
.acs-share-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:16px;
}
.acs-share-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 11px;
  border-radius:999px;
  background:rgba(22,163,74,.10);
  color:#166534;
  border:1px solid rgba(22,163,74,.16);
  font-weight:900;
  font-size:.88rem;
}
.acs-share-title{
  margin:8px 0 4px;
  font-size:clamp(1.18rem,2vw,1.5rem);
  line-height:1.2;
  font-weight:900;
  color:#111827;
}
.acs-share-subtitle{
  margin:0;
  color:#4b5563;
  font-size:.98rem;
}
.acs-share-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
}
.acs-share-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:48px;
  padding:12px 14px;
  border-radius:16px;
  text-decoration:none;
  font-weight:900;
  border:1px solid rgba(229,231,235,.95);
  background:#fff;
  color:#111827;
  cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  box-shadow:0 8px 20px rgba(15,23,42,.06);
}
.acs-share-btn:hover{
  transform:translateY(-1px);
  box-shadow:0 14px 26px rgba(15,23,42,.10);
  border-color:rgba(124,58,237,.25);
}
.acs-share-btn .ico{
  width:28px;
  height:28px;
  display:grid;
  place-items:center;
  border-radius:50%;
  color:#fff;
  font-size:15px;
  flex:none;
}
.acs-share-btn.whatsapp .ico{background:#16a34a}
.acs-share-btn.telegram .ico{background:#2563eb}
.acs-share-btn.facebook .ico{background:#1d4ed8}
.acs-share-btn.twitter .ico{background:#111827}
.acs-share-btn.linkedin .ico{background:#0a66c2}
.acs-share-btn.copy .ico{background:linear-gradient(135deg,#7c3aed,#ec4899)}
.acs-copy-note{
  margin-top:12px;
  min-height:22px;
  color:#166534;
  font-weight:900;
  font-size:.94rem;
}
@media(max-width:800px){
  .acs-share-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:520px){
  .acs-share-card{padding:18px}
  .acs-share-grid{grid-template-columns:1fr}
  .acs-share-btn{justify-content:flex-start}
}


/* ACS 5-Button Navigation + Local Listen Patch */
:root{--acs-nav-h:76px}
body{padding-bottom:calc(var(--acs-nav-h) + env(safe-area-inset-bottom,0px))}
.acs-bottom-nav{
  position:fixed;
  left:50%;
  bottom:12px;
  transform:translateX(-50%);
  width:min(94vw,780px);
  min-height:64px;
  padding:8px;
  border-radius:24px;
  background:rgba(255,255,255,.94);
  border:1px solid rgba(229,231,235,.96);
  box-shadow:0 18px 45px rgba(15,23,42,.18);
  backdrop-filter:blur(18px);
  z-index:3000;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:7px;
}
.acs-nav-btn{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  min-height:48px;
  border-radius:17px;
  border:1px solid rgba(229,231,235,.95);
  background:linear-gradient(180deg,#fff,#fafaff);
  color:#111827;
  text-decoration:none;
  font-weight:900;
  font-size:.78rem;
  line-height:1.1;
  cursor:pointer;
  transition:transform .16s ease, box-shadow .16s ease, background .16s ease;
}
.acs-nav-btn:hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,23,42,.10)}
.acs-nav-btn .acs-nav-ico{font-size:1.18rem;line-height:1}
.acs-nav-btn.listen-active{
  background:linear-gradient(135deg,#7c3aed,#ec4899);
  color:#fff;
  border-color:transparent;
}
.acs-local-listen{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  border:none;
  border-radius:999px;
  padding:8px 12px;
  background:linear-gradient(135deg,#7c3aed,#ec4899);
  color:#fff;
  font-weight:900;
  cursor:pointer;
  box-shadow:0 10px 22px rgba(124,58,237,.18);
  margin:0 0 10px;
}
.acs-local-listen:hover{transform:translateY(-1px)}
.acs-local-listen.is-speaking{background:linear-gradient(135deg,#ef4444,#f97316)}
.acs-goto-modal{
  position:fixed;
  inset:0;
  z-index:4000;
  display:none;
  align-items:center;
  justify-content:center;
  padding:18px;
  background:rgba(15,23,42,.58);
  backdrop-filter:blur(10px);
}
.acs-goto-modal.open{display:flex}
.acs-goto-panel{
  width:min(94vw,860px);
  max-height:86vh;
  overflow:hidden;
  border-radius:28px;
  background:#fff;
  border:1px solid rgba(229,231,235,.98);
  box-shadow:0 24px 70px rgba(15,23,42,.30);
  display:flex;
  flex-direction:column;
}
.acs-goto-head{
  padding:18px;
  background:
    radial-gradient(circle at top left,rgba(124,58,237,.13),transparent 36%),
    radial-gradient(circle at top right,rgba(236,72,153,.12),transparent 32%),
    #fff;
  border-bottom:1px solid #e5e7eb;
}
.acs-goto-title{margin:0 0 8px;font-size:1.35rem;line-height:1.2;font-weight:900;color:#111827}
.acs-goto-sub{margin:0;color:#4b5563}
.acs-goto-search-row{display:flex;gap:10px;margin-top:14px}
.acs-goto-search{
  flex:1;
  min-height:48px;
  border:1px solid #d1d5db;
  border-radius:16px;
  padding:0 14px;
  font-size:1rem;
  font-weight:700;
  outline:none;
}
.acs-goto-search:focus{border-color:#7c3aed;box-shadow:0 0 0 4px rgba(124,58,237,.10)}
.acs-goto-close{
  min-width:48px;
  border:none;
  border-radius:16px;
  background:#111827;
  color:#fff;
  font-size:1.1rem;
  font-weight:900;
  cursor:pointer;
}
.acs-goto-list{
  overflow:auto;
  padding:12px 14px 18px;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:8px;
}
.acs-goto-item{
  display:block;
  padding:12px 13px;
  border-radius:16px;
  border:1px solid #e5e7eb;
  background:#fff;
  color:#111827;
  text-decoration:none;
  font-weight:800;
  line-height:1.35;
}
.acs-goto-item:hover{background:#f5f3ff;border-color:#ddd6fe}
.acs-goto-id{display:inline-flex;margin-right:6px;color:#7c3aed;font-weight:900}
.acs-listen-toast{
  position:fixed;
  left:50%;
  bottom:calc(var(--acs-nav-h) + 24px);
  transform:translateX(-50%);
  z-index:4100;
  display:none;
  max-width:min(92vw,620px);
  padding:12px 16px;
  border-radius:999px;
  background:#111827;
  color:#fff;
  box-shadow:0 14px 34px rgba(15,23,42,.25);
  font-weight:900;
  text-align:center;
}
.acs-listen-toast.show{display:block}
@media(max-width:720px){
  .acs-bottom-nav{width:96vw;bottom:8px;border-radius:20px;gap:5px;padding:6px}
  .acs-nav-btn{font-size:.68rem;min-height:46px;border-radius:14px}
  .acs-nav-btn .acs-nav-ico{font-size:1.05rem}
  .acs-goto-list{grid-template-columns:1fr}
}
@media(max-width:380px){
  .acs-nav-btn span:last-child{display:none}
  .acs-nav-btn .acs-nav-ico{font-size:1.28rem}
}


/* ACS Reinforcement System Patch */
.acs-reward-card{
  margin:22px 0;
  padding:22px;
  border-radius:26px;
  border:1px solid rgba(229,231,235,.95);
  background:
    radial-gradient(circle at top left,rgba(245,158,11,.16),transparent 34%),
    radial-gradient(circle at top right,rgba(124,58,237,.12),transparent 30%),
    linear-gradient(180deg,#ffffff 0%,#fffaf0 100%);
  box-shadow:0 18px 45px rgba(38,51,77,.11);
}
.acs-reward-kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:999px;
  background:rgba(245,158,11,.14);color:#92400e;
  border:1px solid rgba(245,158,11,.25);
  font-weight:900;font-size:.9rem;
}
.acs-reward-title{margin:10px 0 6px;font-size:clamp(1.25rem,2vw,1.6rem);font-weight:900;line-height:1.2;color:#111827}
.acs-reward-text{margin:0 0 12px;color:#4b5563}
.acs-badge-visual{
  display:flex;align-items:center;gap:14px;
  padding:16px;border-radius:20px;background:#fff;border:1px solid #fde68a;margin:14px 0;
}
.acs-badge-icon{
  width:64px;height:64px;border-radius:50%;
  display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,#f59e0b,#ec4899);
  color:#fff;font-size:2rem;box-shadow:0 12px 24px rgba(245,158,11,.25);
}
.acs-badge-name{font-weight:900;font-size:1.1rem;margin:0;color:#111827}
.acs-badge-skill{margin:3px 0 0;color:#4b5563;font-weight:700}
.acs-reward-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.acs-reward-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;border-radius:16px;min-height:46px;padding:12px 15px;
  font-weight:900;cursor:pointer;text-decoration:none;
  background:#fff;color:#111827;border:1px solid #e5e7eb;
  box-shadow:0 8px 20px rgba(15,23,42,.06);
}
.acs-reward-btn.primary{background:linear-gradient(135deg,#7c3aed,#ec4899);color:#fff;border-color:transparent}
.acs-reward-btn.done{background:linear-gradient(135deg,#16a34a,#22c55e);color:#fff;border-color:transparent}
.acs-note-panel,.acs-final-cert-panel{
  margin-top:18px;padding:18px;border-radius:22px;border:1px solid #dbeafe;background:linear-gradient(180deg,#eff6ff,#ffffff);
}
.acs-note-panel.locked,.acs-final-cert-panel.locked{filter:grayscale(.15);opacity:.78}
.acs-note-text{
  white-space:pre-wrap;background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:14px;color:#111827;font-weight:700;line-height:1.7;
}
.acs-cert-preview{
  margin-top:14px;border-radius:24px;padding:22px;
  background:linear-gradient(135deg,#fff,#fdf2f8);
  border:2px solid #f5d07a;box-shadow:0 18px 45px rgba(38,51,77,.11);
  text-align:center;
}
.acs-cert-title{font-size:1.65rem;font-weight:900;color:#111827;margin:5px 0}
.acs-cert-name{font-size:1.8rem;font-weight:900;color:#7c3aed;margin:10px 0}
.acs-student-input{
  min-height:46px;border:1px solid #d1d5db;border-radius:14px;padding:0 12px;font-weight:800;min-width:240px;
}
@media(max-width:650px){
  .acs-badge-visual{align-items:flex-start}
  .acs-reward-actions{display:grid;grid-template-columns:1fr}
  .acs-reward-btn{width:100%}
}


/* ACS Progress Lock + Unlock Patch */
.acs-lock-status{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 10px;border-radius:999px;
  font-size:.78rem;font-weight:900;margin-left:6px;
}
.acs-lock-status.open{background:#ecfdf5;color:#166534;border:1px solid #bbf7d0}
.acs-lock-status.locked{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.acs-lock-status.done{background:#fff7ed;color:#92400e;border:1px solid #fed7aa}
.acs-goto-item.locked{
  opacity:.64;
  background:#f8fafc;
  cursor:not-allowed;
  border-style:dashed;
}
.acs-goto-item.completed{background:#fff7ed;border-color:#fed7aa}
.acs-goto-item.open{background:#fff}
.acs-progress-lock-panel{
  margin-top:14px;
  padding:14px;
  border-radius:18px;
  border:1px solid #dbeafe;
  background:linear-gradient(180deg,#eff6ff,#ffffff);
}
.acs-progress-lock-title{margin:0 0 8px;font-weight:900;color:#111827}
.acs-progress-lock-bar{
  height:12px;border-radius:999px;background:#e5e7eb;overflow:hidden;margin:10px 0;
}
.acs-progress-lock-fill{
  height:100%;width:0;background:linear-gradient(135deg,#16a34a,#7c3aed);border-radius:999px;transition:width .25s ease;
}
.acs-reset-progress{
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid #fecaca;background:#fff;color:#991b1b;
  padding:9px 12px;border-radius:14px;font-weight:900;cursor:pointer;margin-top:8px;
}
.acs-lock-toast{
  position:fixed;left:50%;bottom:calc(var(--acs-nav-h,76px) + 72px);
  transform:translateX(-50%);
  z-index:4300;max-width:min(92vw,680px);
  padding:14px 18px;border-radius:18px;background:#111827;color:#fff;
  box-shadow:0 18px 40px rgba(15,23,42,.30);
  display:none;font-weight:900;text-align:center;
}
.acs-lock-toast.show{display:block}
.acs-locked-overlay{
  position:fixed;inset:0;z-index:4200;
  display:none;align-items:center;justify-content:center;
  background:rgba(15,23,42,.62);backdrop-filter:blur(10px);
  padding:20px;
}
.acs-locked-overlay.show{display:flex}
.acs-locked-card{
  width:min(94vw,680px);background:#fff;border-radius:28px;border:1px solid #e5e7eb;
  box-shadow:0 24px 70px rgba(15,23,42,.32);padding:24px;text-align:center;
}
.acs-locked-card h2{margin:0 0 10px;font-size:1.6rem}
.acs-locked-card p{color:#4b5563;font-weight:800}
.acs-locked-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:16px}
.acs-locked-actions a,.acs-locked-actions button{
  border:none;border-radius:16px;padding:12px 15px;font-weight:900;text-decoration:none;cursor:pointer;
}
.acs-locked-actions .primary{background:linear-gradient(135deg,#7c3aed,#ec4899);color:#fff}
.acs-locked-actions .secondary{background:#fff;border:1px solid #e5e7eb;color:#111827}


/* ACS Knowledge Support Box Patch */
.acs-knowledge-box{
  margin:22px 0;
  padding:22px;
  border-radius:26px;
  border:1px solid rgba(191,219,254,.95);
  background:
    radial-gradient(circle at top left,rgba(37,99,235,.12),transparent 34%),
    radial-gradient(circle at top right,rgba(22,163,74,.10),transparent 30%),
    linear-gradient(180deg,#ffffff 0%,#f8fbff 100%);
  box-shadow:0 18px 45px rgba(38,51,77,.10);
}
.acs-knowledge-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.acs-knowledge-title{margin:0;font-size:clamp(1.25rem,2vw,1.6rem);font-weight:900;line-height:1.2;color:#111827}
.acs-knowledge-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 11px;border-radius:999px;
  background:#ecfdf5;color:#166534;border:1px solid #bbf7d0;
  font-weight:900;font-size:.88rem;
}
.acs-knowledge-text{margin:0 0 14px;color:#374151;font-weight:700;line-height:1.65}
.acs-knowledge-concept{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 12px;border-radius:999px;
  background:#fff;border:1px solid #dbeafe;color:#1d4ed8;
  font-weight:900;margin:0 0 14px;
}
.acs-knowledge-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px;
  margin:12px 0 14px;
}
.acs-knowledge-link,.acs-copy-prompt{
  min-height:48px;
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 14px;border-radius:16px;
  border:1px solid #e5e7eb;background:#fff;color:#111827;
  font-weight:900;text-decoration:none;cursor:pointer;
  box-shadow:0 8px 20px rgba(15,23,42,.06);
}
.acs-knowledge-link:hover,.acs-copy-prompt:hover{transform:translateY(-1px);box-shadow:0 14px 26px rgba(15,23,42,.10)}
.acs-knowledge-link.wiki{border-color:#bfdbfe}
.acs-knowledge-link.ai{border-color:#ddd6fe}
.acs-knowledge-link.gemini{border-color:#bbf7d0}
.acs-knowledge-link.official{border-color:#fed7aa}
.acs-knowledge-prompt{
  margin-top:12px;padding:13px 14px;border-radius:16px;
  background:#0f172a;color:#e5e7eb;font-weight:700;line-height:1.6;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9rem;
}
.acs-knowledge-note{
  margin:12px 0 0;
  padding:13px 14px;
  border-radius:16px;
  background:#fff7ed;
  border:1px solid #fed7aa;
  color:#7c2d12;
  font-weight:800;
  line-height:1.6;
}
@media(max-width:720px){
  .acs-knowledge-box{padding:18px}
  .acs-knowledge-grid{grid-template-columns:1fr}
  .acs-knowledge-link,.acs-copy-prompt{justify-content:flex-start}
}


/* ACS Top-EdTech Quality Upgrade Patch */
.acs-depth-card,.acs-facilitator-guide{
  margin:22px 0;
  padding:22px;
  border-radius:26px;
  border:1px solid rgba(229,231,235,.95);
  background:linear-gradient(180deg,#ffffff 0%,#fbfcff 100%);
  box-shadow:0 18px 45px rgba(38,51,77,.10);
}
.acs-depth-title,.acs-facilitator-title{margin:0 0 12px;font-size:clamp(1.25rem,2vw,1.6rem);font-weight:900;color:#111827;line-height:1.2}
.acs-depth-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.acs-depth-item{padding:14px;border:1px solid #e5e7eb;border-radius:18px;background:#fff}
.acs-depth-item h3{margin:0 0 6px;font-size:1.05rem;color:#111827}
.acs-depth-item p,.acs-depth-item li{color:#374151;font-weight:700;line-height:1.55}
.acs-depth-item ul{margin:0;padding-left:20px}
.acs-mastery-result{
  padding:14px 16px!important;
  border-radius:18px!important;
  border:1px solid #ddd6fe!important;
  background:linear-gradient(180deg,#f5f3ff,#fff)!important;
  color:#111827!important;
  line-height:1.55!important;
}
.acs-cert-preview.global-v2{
  background:linear-gradient(135deg,#fffdf5,#ffffff)!important;
  border:2px solid #d6b25e!important;
  color:#111827!important;
  padding:24px!important;
  border-radius:22px!important;
}
.acs-cert-logo-row{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px}
.acs-cert-logo-box{width:62px;height:62px;border-radius:50%;border:1px solid #d6b25e;display:grid;place-items:center;font-weight:900;color:#7c3aed;background:#fff}
.acs-cert-org{font-weight:900;letter-spacing:.04em;color:#111827}
.acs-cert-sub{font-weight:900;color:#7c3aed;margin-top:3px}
.acs-cert-title-v2{font-size:1.45rem;font-weight:900;color:#111827;margin:16px 0 8px;letter-spacing:.03em}
.acs-cert-name{font-size:1.8rem;font-weight:900;color:#7c3aed;margin:10px 0!important}
.acs-cert-minimal-line{border-top:1px solid #d6b25e;margin:16px auto;max-width:520px}
.acs-official-links{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}
.acs-official-links a{display:inline-flex;padding:8px 10px;border:1px solid #e5e7eb;border-radius:999px;text-decoration:none;font-weight:900;background:#fff;color:#1d4ed8}
.acs-facilitator-guide ul{margin:0;padding-left:20px}
.acs-facilitator-guide li{margin:7px 0;font-weight:700;color:#374151}
@media(max-width:760px){.acs-depth-grid{grid-template-columns:1fr}.acs-cert-logo-row{justify-content:center}.acs-cert-logo-box{width:54px;height:54px}}



/* Extracted fee-policy style source: Applied Computer School fee policy */

    .fee-page{max-width:1180px;margin:0 auto;padding:44px 18px 76px}
    .fee-hero{background:radial-gradient(circle at 12% 10%,rgba(232,168,40,.16),transparent 34%),radial-gradient(circle at 88% 18%,rgba(26,107,58,.12),transparent 32%),linear-gradient(135deg,rgba(255,255,255,.92),rgba(247,243,238,.92));border:1px solid rgba(28,43,74,.08);border-radius:30px;box-shadow:var(--shadow-md);padding:34px 24px;text-align:center;margin:28px 0 34px}
    .fee-hero h1{font-size:clamp(2.1rem,6vw,3.7rem);color:var(--primary-navy);margin-bottom:14px;line-height:1.12}
    .fee-hero p{max-width:780px;margin:0 auto 22px;color:var(--text-muted);font-size:1rem;line-height:1.85}
    .fee-badges,.fee-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px}
    .fee-badge{display:inline-flex;border-radius:999px;padding:9px 13px;font-size:.82rem;font-weight:900;border:1px solid rgba(28,43,74,.09);background:#fff;color:var(--primary-navy);box-shadow:var(--shadow-xs)}
    .fee-badge.free{background:var(--green-pale);color:var(--success-green);border-color:rgba(26,107,58,.20)}
    .fee-badge.paid{background:var(--gold-pale);color:var(--accent-gold);border-color:rgba(200,135,10,.22)}
    .fee-note,.fee-card{background:#fff;border:1px solid rgba(28,43,74,.07);border-radius:20px;box-shadow:var(--shadow-soft)}
    .fee-note{padding:22px;margin:22px 0 34px;color:var(--text-muted);line-height:1.85}
    .fee-note strong{color:var(--primary-navy)}
    .fee-section{margin:34px 0}
    .fee-section-head{text-align:center;margin-bottom:22px}
    .fee-section-head h2{font-size:clamp(1.45rem,4vw,2.05rem);color:var(--primary-navy);margin-bottom:8px}
    .fee-section-head p{max-width:680px;margin:0 auto;color:var(--text-muted)}
    .fee-grid{display:grid;grid-template-columns:1fr;gap:14px}
    .fee-card{padding:20px 18px;transition:var(--transition)}
    .fee-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(200,135,10,.24)}
    .fee-card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:8px}
    .fee-card h3{color:var(--primary-navy);font-size:1.03rem;margin:0;line-height:1.35}
    .fee-price{flex-shrink:0;font-weight:900;color:var(--accent-gold);background:var(--gold-pale);border:1px solid rgba(200,135,10,.20);border-radius:999px;padding:6px 10px;font-size:.84rem;white-space:nowrap}
    .fee-price.free{color:var(--success-green);background:var(--green-pale);border-color:rgba(26,107,58,.20)}
    .fee-card p{margin:0;color:var(--text-muted);font-size:.9rem;line-height:1.65}
    .fee-warning{background:#fff7ed;border:1px solid rgba(154,52,18,.18);color:#7c2d12;border-radius:22px;padding:20px;margin-top:28px;line-height:1.8;font-weight:700}
    @media(min-width:640px){.fee-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
    @media(min-width:1024px){.fee-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}}
  


/* =========================================================
   ACS E-commerce Course Unified Theme v4
   Base adapted from ACS AI Digital Master page + ACS Fee Policy page.
   ========================================================= */
:root{
  --primary-navy:#0f172a;--text-muted:#4b5563;--success-green:#16a34a;--green-pale:#ecfdf5;--accent-gold:#b7791f;--gold-pale:#fff7ed;--shadow-md:0 18px 45px rgba(38,51,77,.11);--shadow-soft:0 10px 30px rgba(15,23,42,.08);--shadow-xs:0 6px 16px rgba(15,23,42,.06);--transition:.2s ease;
}
body[data-acs-course="ecommerce-listing"]{background:radial-gradient(circle at top left,rgba(124,58,237,.10),transparent 28%),radial-gradient(circle at top right,rgba(236,72,153,.09),transparent 26%),linear-gradient(180deg,#fbfcff 0%,#f5f7ff 100%)}
.logo-text{width:100%;height:100%;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--pink));color:#fff;font-weight:900;font-size:1.15rem;letter-spacing:.04em}.course-code{font-weight:900;color:#7c3aed}.lesson-shell{padding:28px 0 34px}.lesson-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.lesson-main{display:grid;gap:18px}.lesson-hero{padding:28px}.lesson-meta-row{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}.meta-chip{display:inline-flex;align-items:center;gap:7px;padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:900;color:#374151}.ecom-block{padding:24px;background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.ecom-block h2{margin-bottom:8px}.ecom-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.ecom-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.ecom-card{padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}.ecom-card h3{margin:0 0 8px;font-size:1.06rem}.ecom-card p{margin:0;color:#374151}.time-line{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;margin-top:14px}.time-box{padding:12px 8px;text-align:center;border-radius:16px;border:1px solid #e5e7eb;background:linear-gradient(180deg,#fff,#fafaff);font-weight:900}.time-box b{display:block;color:#7c3aed;font-size:1.25rem}.video-support{border:1px solid #dbeafe;background:linear-gradient(180deg,#eff6ff,#fff)}.safety-panel{border-color:#fecaca;background:linear-gradient(180deg,#fff7f7,#fff)}.skill-table,.glossary-table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden}.skill-table th,.skill-table td,.glossary-table th,.glossary-table td{padding:11px;border:1px solid #e5e7eb;text-align:left;vertical-align:top}.skill-table th,.glossary-table th{background:#f8fafc}.action-diagram{margin-top:14px;padding:18px;border-radius:24px;background:linear-gradient(180deg,#fcfcff,#f7f6ff);border:1px solid #e5e7eb;overflow:auto}.action-flow{display:flex;align-items:center;justify-content:space-between;gap:10px;min-width:660px}.action-step{flex:1;min-height:70px;padding:14px;border-radius:18px;background:#fff;border:1px solid #ddd6fe;display:grid;place-items:center;text-align:center;font-weight:900;box-shadow:0 8px 18px rgba(124,58,237,.07)}.action-arrow{font-weight:900;color:#7c3aed;font-size:1.4rem}.submission-box{background:linear-gradient(180deg,#fff,#f8fafc);border:1px solid var(--line);border-radius:20px;padding:16px}.simple-list{margin:0;padding-left:20px}.simple-list li{margin:6px 0}.faq details{border:1px solid #e5e7eb;border-radius:16px;padding:12px 14px;background:#fff;margin:9px 0}.faq summary{font-weight:900;cursor:pointer}.progress-badge{display:inline-flex;align-items:center;gap:8px;padding:10px 13px;border-radius:999px;background:#fff7ed;color:#92400e;border:1px solid #fed7aa;font-weight:900}.policy-strip{padding:18px;border-radius:22px;border:1px solid rgba(200,135,10,.22);background:linear-gradient(135deg,rgba(255,247,237,.9),rgba(255,255,255,.95));margin:16px 0}.policy-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:14px}.policy-card{padding:14px;border:1px solid #e5e7eb;border-radius:18px;background:#fff}.policy-card strong{display:block;color:#111827;margin-bottom:4px}.lesson-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.lesson-list a{display:block;padding:12px 13px;border:1px solid #e5e7eb;border-radius:16px;background:#fff;color:#111827;font-weight:800}.lesson-list a:hover{background:#f5f3ff;border-color:#ddd6fe}.phase-banner{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;padding:9px 12px;border-radius:999px;background:rgba(124,58,237,.10);color:#6d28d9;font-weight:900;border:1px solid rgba(124,58,237,.18)}.source-note{font-size:.92rem;color:#4b5563}.bottom-spacer{height:90px}.course-stat-card{padding:18px;border-radius:22px;background:#fff;border:1px solid #e5e7eb;box-shadow:var(--shadow-soft)}.course-map-filter{position:sticky;top:82px;z-index:20;background:rgba(255,255,255,.94);border:1px solid #e5e7eb;border-radius:20px;padding:14px;margin:18px 0;box-shadow:var(--shadow-soft)}.course-map-filter input{width:100%;min-height:46px;border:1px solid #d1d5db;border-radius:16px;padding:0 14px;font-weight:800}.footer .foot-col{font-size:.92rem}.acs-bottom-nav{font-family:"Hind",system-ui,sans-serif}.acs-bottom-nav button{font-family:inherit}.print-only{display:none}
@media(max-width:1100px){.lesson-grid{grid-template-columns:1fr}.sticky-nav{position:static}.policy-grid{grid-template-columns:1fr}.time-line{grid-template-columns:repeat(2,1fr)}.lesson-list{grid-template-columns:1fr}}
@media(max-width:760px){.lesson-hero{padding:20px}.ecom-block{padding:18px}.ecom-grid,.ecom-grid-3{grid-template-columns:1fr}.time-line{grid-template-columns:1fr}.action-flow{min-width:0;display:grid;grid-template-columns:1fr}.action-arrow{transform:rotate(90deg);text-align:center}.policy-strip{padding:14px}.lesson-shell{padding-top:14px}.display-title{font-size:1.8rem}.lesson-title{font-size:1.22rem}.hero-actions{display:grid}.btn{width:100%}.sticky-nav{display:none}}
@media print{.topbar,.acs-bottom-nav,.sticky-nav,.acs-share-card,.hero-actions,.no-print{display:none!important}body{padding-bottom:0;background:#fff}.ecom-block,.hero-card,.panel{box-shadow:none}.print-only{display:block}}


/* ACS E-commerce v6 — exit navigation, rich content and fee policy links */
.exit-nav-wrap{max-width:var(--max);margin:14px auto 0;padding:0 18px}.exit-nav{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:center;padding:12px;border-radius:22px;border:1px solid rgba(229,231,235,.96);background:rgba(255,255,255,.92);box-shadow:0 12px 28px rgba(15,23,42,.08)}.exit-nav .exit-label{font-weight:900;color:#374151;margin-right:4px}.exit-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:9px 13px;border-radius:999px;background:#fff;border:1px solid #e5e7eb;color:#111827;font-weight:900;text-decoration:none}.exit-nav a.important{background:linear-gradient(135deg,#7c3aed,#ec4899);color:#fff;border-color:transparent}.exit-nav a.policy{background:#fff7ed;border-color:#fed7aa;color:#92400e}.depth-note{background:linear-gradient(180deg,#ffffff,#fbfaff);border:1px solid rgba(229,231,235,.95);border-radius:24px;padding:22px;box-shadow:0 14px 32px rgba(38,51,77,.08)}.depth-note h2{margin-bottom:10px}.depth-note h3{margin:18px 0 8px;color:#1f2937}.depth-note p{margin:0 0 12px}.depth-list{display:grid;gap:10px;margin:12px 0;padding:0;list-style:none}.depth-list li{padding:11px 13px;border:1px solid #e5e7eb;border-radius:15px;background:#fff}.practice-deep-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:12px}.practice-deep-card{padding:15px;border:1px solid #e5e7eb;border-radius:18px;background:#fff}.practice-deep-card h3{margin:0 0 8px}.fee-policy-callout{padding:18px;border-radius:22px;background:linear-gradient(135deg,rgba(245,158,11,.12),rgba(255,255,255,.98));border:1px solid #fed7aa;margin:18px 0}.fee-policy-callout a{font-weight:900;color:#92400e}.external-exit-box{margin-top:14px;padding:14px;border-radius:18px;border:1px solid #dbeafe;background:#eff6ff}.external-exit-box a{font-weight:900}.acs-bottom-nav{grid-template-columns:repeat(6,1fr)!important}.acs-nav-btn.exit-site{background:linear-gradient(135deg,#111827,#374151);color:#fff;border-color:transparent}.footer .site-links{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.footer .site-links a{padding:7px 9px;border-radius:999px;background:#fff;border:1px solid #e5e7eb}@media(max-width:760px){.practice-deep-grid{grid-template-columns:1fr}.exit-nav{justify-content:flex-start}.exit-nav a{width:100%;justify-content:center}.exit-nav .exit-label{width:100%;text-align:center}.acs-bottom-nav{grid-template-columns:repeat(3,1fr)!important;min-height:118px}.acs-nav-btn{min-height:48px}}