/* Arkon One Academy (public host and in-app). Brand: navy #0a2b4e, blue #1e88f5, Inter. */
:root{--ac-navy:#0a2b4e;--ac-blue:#1e88f5;--ac-bg:#f5f8fc;--ac-card:#fff;--ac-line:#dbe4ef;--ac-text:#14243a;--ac-mute:#5b6b80;--ac-ok:#1a9d5c}
@media (prefers-color-scheme:dark){.ac-body{--ac-bg:#0b1624;--ac-card:#111f33;--ac-line:#223551;--ac-text:#e6eef8;--ac-mute:#9db0c7}}
.ac-body{margin:0;background:var(--ac-bg);color:var(--ac-text);font:16px/1.55 Inter,system-ui,-apple-system,Segoe UI,sans-serif}
.ac-steps a,.ac-prevnext a,.ac-crumbs a,.ac-lead a,.ac-foot a{color:var(--ac-blue)}
.ac-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 20px;background:var(--ac-navy);color:#fff}
.ac-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
.ac-brand img{height:34px;width:auto;background:#fff;border-radius:6px;padding:3px 6px}
.ac-top nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.ac-top .btn{padding:8px 14px;border-radius:8px;background:var(--ac-blue);font-weight:600}
.ac{max-width:1180px;margin:0 auto;padding:20px 16px 48px}
.ac h1,.ac h2,.ac h3{color:inherit}
.ac-hero h1,.ac-hero h2{color:#fff}
.ac h1{font-size:clamp(26px,4vw,40px);line-height:1.15;margin:.2em 0 .4em}
.ac h2{font-size:20px;margin:1.6em 0 .5em}
.ac-eyebrow{color:var(--ac-blue);font-weight:700;letter-spacing:.06em;text-transform:uppercase;font-size:13px;margin:0}
.ac-hero{background:linear-gradient(135deg,var(--ac-navy),#164a85);color:#fff;border-radius:16px;padding:32px clamp(18px,4vw,44px);margin:8px 0 24px}
.ac-hero p{max-width:60ch;opacity:.92}
.ac-hero-sm{padding:24px clamp(18px,4vw,40px)}
.ac-search{display:flex;gap:8px;max-width:640px;margin:16px 0 4px}
.ac-search input{flex:1;min-width:0;padding:12px 14px;border-radius:10px;border:1px solid var(--ac-line);font:inherit;background:#fff;color:#14243a}
.ac-search .btn,.ac .btn{display:inline-block;border:0;border-radius:10px;padding:11px 18px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}
.ac .btn-primary{background:var(--ac-blue);color:#fff}
.ac .btn-secondary{background:var(--ac-card);color:var(--ac-text);border:1px solid var(--ac-line)}
.sr{position:absolute;left:-9999px}
.ac-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.ac-card{display:flex;flex-direction:column;gap:8px;background:var(--ac-card);border:1px solid var(--ac-line);border-radius:14px;padding:20px;text-decoration:none;color:var(--ac-text)!important;transition:transform .12s,box-shadow .12s}
.ac-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(10,43,78,.14)}
.ac-card h2{margin:0;font-size:20px}.ac-card p{margin:0;color:var(--ac-mute);font-size:15px;flex:1}
.ac-meta{color:var(--ac-mute);font-size:14px}.ac-hero .ac-meta{color:#cfe0f5}
.ac-go{color:var(--ac-blue);font-weight:600}
.ac-bar{height:8px;border-radius:99px;background:var(--ac-line);overflow:hidden;margin:6px 0}.ac-hero .ac-bar{background:rgba(255,255,255,.25);max-width:420px}
.ac-bar i{display:block;height:100%;background:var(--ac-ok);border-radius:99px;transition:width .3s}
.ac-crumbs{font-size:14px;color:var(--ac-mute);margin:0 0 6px}
.ac-list{list-style:none;margin:0;padding:0;background:var(--ac-card);border:1px solid var(--ac-line);border-radius:14px;overflow:hidden}
.ac-row+.ac-row{border-top:1px solid var(--ac-line)}
.ac-row a{display:grid;grid-template-columns:34px 1fr auto auto 22px;gap:12px;align-items:center;padding:12px 16px;text-decoration:none;color:var(--ac-text)}
.ac-row a:hover{background:rgba(30,136,245,.07)}
.ac-n{color:var(--ac-mute);font-variant-numeric:tabular-nums;text-align:right}
.ac-t small{display:block;color:var(--ac-mute);font-size:13px}
.ac-k{font-size:12px;border-radius:99px;padding:2px 9px;background:rgba(30,136,245,.12);color:var(--ac-blue);white-space:nowrap}
.ac-k-overview{background:rgba(10,43,78,.12);color:var(--ac-navy)}
.ac-d{color:var(--ac-mute);font-size:13px;white-space:nowrap}
.ac-ok{color:transparent;display:flex}.is-done .ac-ok{color:var(--ac-ok)}.is-done .ac-t{color:var(--ac-mute)}
.is-current{background:rgba(30,136,245,.1)}
.ac-lesson{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px;align-items:start}
.ac-player{position:relative;aspect-ratio:16/9;background:#000;border-radius:12px;overflow:hidden}
.ac-player video,.ac-player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.ac-soon{display:flex;align-items:center;justify-content:center;text-align:center;background:linear-gradient(135deg,var(--ac-navy),#164a85);color:#fff;padding:24px}
.ac-actions{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}
.ac-lead{font-size:18px;color:var(--ac-mute)}
.ac-steps{padding-left:22px}.ac-steps li{margin:.45em 0}
.ac-prevnext{display:flex;justify-content:space-between;gap:12px;margin-top:28px;flex-wrap:wrap}
.ac-side{position:sticky;top:12px;max-height:calc(100vh - 24px);overflow:auto}
.ac-side h3{margin:0 0 4px;font-size:16px}
.ac-list-sm .ac-row a{grid-template-columns:26px 1fr 20px;padding:9px 12px;font-size:14px}
.ac-foot{text-align:center;color:var(--ac-mute);font-size:13px;padding:24px 16px}
@media (max-width:900px){.ac-lesson{grid-template-columns:1fr}.ac-side{position:static;max-height:none}}
@media (max-width:560px){.ac-row a{grid-template-columns:28px 1fr 20px}.ac-k,.ac-d{display:none}.ac-search{flex-direction:column}}
/* landing additions */
.ac-body main{min-height:60vh}
.ac-hero h1{color:#fff}
.ac-hero-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:14px;opacity:.9}
.ac-h2{font-size:24px;margin:34px 0 12px}
.ac-grid-3{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.ac-vid{padding:0;overflow:hidden}.ac-vid img{width:100%;height:auto;display:block;aspect-ratio:16/9;object-fit:cover;background:#0a2b4e}
.ac-vid h3{margin:12px 16px 0;font-size:17px}.ac-vid .ac-meta{margin:0 16px 16px}
.ac-status{display:flex;flex-wrap:wrap;align-items:center;gap:22px;background:var(--ac-card);border:1px solid var(--ac-line);border-radius:14px;padding:16px 22px;margin:0 0 8px}
.ac-status>div:not(.ac-status-bar){display:flex;flex-direction:column;align-items:center;min-width:90px}.ac-status b{font-size:28px;line-height:1;color:var(--ac-blue)}.ac-status span{font-size:13px;color:var(--ac-mute)}
.ac-status-bar{flex:1;min-width:240px;font-size:14px;color:var(--ac-mute)}
.ac-how{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:36px 0 0}
.ac-how>div{background:var(--ac-card);border:1px solid var(--ac-line);border-radius:14px;padding:18px}.ac-how p{margin:.3em 0 0;color:var(--ac-mute)}
.ac-body .hdr .wrap,.ac-body .ftr .wrap{max-width:1180px}

.ac .btn-primary,.ac-body .hdr .cta{color:#fff!important}
.ac-go{color:var(--ac-blue)!important}
.ac-row a,.ac-card{color:var(--ac-text)}