.portal{min-height:100vh;background:radial-gradient(ellipse at 95% 0,#38171b 0,transparent 32rem),#0b0d10}
.portal-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 5vw;border-bottom:1px solid var(--line)}
.portal-shell{width:min(94vw,1280px);min-height:70vh;margin:0 auto;padding:45px 0}
.portal-identity{padding:12px 0 22px}
.portal-identity h1,.portal h2,.portal h3{font-family:"Barlow Condensed",system-ui,sans-serif;line-height:1;margin:0;color:#f4f4f1}
.portal-identity h1{font-size:clamp(3rem,8vw,6rem);text-transform:uppercase}
.portal-identity em{font-style:normal;color:var(--hot)}
.portal h2{font-size:clamp(2rem,5vw,3.6rem)}
.portal h3{font-size:1.65rem}
.portal p{line-height:1.55;color:#c6c9ce}
.portal .kicker{margin-bottom:10px}
.portal-panel{background:#15191f;border:1px solid var(--line);border-radius:12px;padding:clamp(16px,3vw,27px);min-width:0}
.portal-access{max-width:535px}
.portal form,.portal-stack{display:grid;gap:13px}
.portal form>button{justify-self:start}
.portal label{display:grid;gap:5px;color:#e5e7eb;font-size:.9rem}
.portal input,.portal select,.portal textarea{width:100%;min-height:44px;font:inherit;color:var(--text);background:#0b0d10;border:1px solid #50555e;border-radius:6px;padding:9px 10px}
.portal input[type=checkbox],.portal input[type=radio]{width:1.1rem;min-height:auto;accent-color:var(--red)}
.portal label.choice{display:flex;align-items:flex-start;gap:10px}
.portal form p{margin:0}
.portal-toolbar,.portal nav,.portal-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.portal-toolbar{justify-content:space-between;margin-bottom:22px}
.portal-tab{font:inherit;background:#15191f;color:var(--text);border:1px solid var(--line);border-radius:5px;padding:10px 13px;min-height:42px}
.portal-tab[aria-current]{border-color:var(--hot);background:#402026}
.portal-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,310px),1fr));gap:14px;margin-top:18px}
.portal-fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,160px),1fr));gap:12px}
.portal-meta{font-size:.82rem;color:#c0c4cb}
.portal-feedback{background:#23191a;border-left:3px solid var(--yellow);padding:12px 16px;margin-bottom:16px}
.portal-chip{display:inline-block;font-size:.74rem;letter-spacing:.05em;color:#f2bd35;background:#f2bd3515;border-radius:3px;padding:4px 7px}
.portal-card-button{display:block;min-height:100px;width:100%;text-align:left;background:#0b0d10;color:#fff;border:1px solid var(--line);border-radius:8px;padding:14px;white-space:pre-line}
.portal-body{white-space:pre-wrap;overflow-wrap:anywhere}
.portal details{padding:12px 0;border-bottom:1px solid var(--line)}
.portal summary{cursor:pointer;font-weight:700}
.portal table{border-collapse:collapse;width:100%;min-width:440px}
.portal th,.portal td{text-align:left;border-bottom:1px solid var(--line);padding:9px 10px}
.portal-scroll{overflow:auto}
.portal .btn:disabled{cursor:wait;opacity:.58}
.portal-question{border:1px solid var(--line);border-radius:6px;padding:12px;margin:0}
.portal-question legend{padding:0 7px}
.portal-question .choice{padding:7px 0}
.portal-question.good{border-color:#49866b}
.portal-question.review{border-color:#c2764f}
.portal-clock{font-variant-numeric:tabular-nums;color:var(--yellow);font-size:1.2rem}
.portal-thumb{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:6px;margin-top:12px}
.portal-footer{padding:20px 5vw;border-top:1px solid var(--line);color:#aeb3ba}
.portal code{overflow-wrap:anywhere}
@media(max-width:540px){.portal-header .btn{padding:9px}.portal-header{padding-inline:3vw}.portal-toolbar{align-items:flex-start}.portal-shell{width:94vw;padding-top:23px}}

/* Academy reading paths and mobile-first practice navigation. */
.portal{
  --study-border:#2c333c;
  background:
    radial-gradient(ellipse at 90% 0, #472020 0, transparent 34rem),
    radial-gradient(ellipse at 0 40%, #1d242e 0, transparent 34rem),
    #0b0d10;
}
.portal-header{background:#0b0d10bf}
.portal-identity{padding:16px 0 30px;border-bottom:1px solid var(--study-border);margin-bottom:24px}
.portal-identity h1{letter-spacing:-.02em}
.portal-identity p{margin:.65rem 0 0}
.portal-panel{background:linear-gradient(145deg,#191e25,#11151a);border-color:var(--study-border);box-shadow:0 14px 38px #0003}
.portal-access{border-top:3px solid var(--red);padding:clamp(20px,4vw,34px)}
.admin-entry{display:inline-block;margin-top:16px;color:#c4c8cc;text-decoration:underline;text-underline-offset:4px}
.portal-toolbar{background:#101318;border:1px solid var(--study-border);padding:10px;border-radius:10px}
.portal nav{gap:6px}
.portal-tab{border-color:transparent;background:#191e25;color:#e1e5e9}
.portal-tab:is([aria-current],[aria-pressed=true]){border-color:#ea5a63;background:#442127;color:#fff}
.portal-tab:hover{border-color:#818994}
.portal .learning-chapter{background:#0f1318;border:1px solid var(--study-border);border-radius:8px;padding:0 14px}
.learning-chapter>summary{padding:15px 0;min-height:44px;color:#f4f4f1}
.learning-chapter>summary .portal-chip{margin-left:10px}
.learning-chapter[open]{padding-bottom:15px;border-color:#7d4047}
.learning-chapter[open]>.portal-stack{padding:5px 0 12px}
.learning-chapter .portal-grid{margin-top:0;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}
.learning-progress{max-width:530px}
.learning-progress progress{width:100%;height:12px;accent-color:#e34f58}
.academy-filters{padding:0 0 10px;border-bottom:1px solid var(--study-border)}
.portal-question legend{font-weight:700;max-width:100%}
.portal-question .choice{border-radius:5px;padding:8px;cursor:pointer}
.portal-question .choice:hover{background:#222934}
@media(max-width:540px){.portal-toolbar{gap:10px}.portal-tab{font-size:.87rem;padding:8px 10px}.portal h3{line-height:1.06}}

.study-notes{display:grid;gap:10px;margin-top:8px}
.study-notes section{background:#151b22;border-left:3px solid #a24b50;padding:11px 14px;border-radius:4px}
.study-notes h4{margin:0 0 6px;font-size:1rem;color:#f3c671}
.study-notes p{margin:0 0 4px;max-width:76ch;line-height:1.68}
.catalog-student{border:1px solid #3a434f;padding:12px;border-radius:8px;margin:0}
.catalog-student legend{padding:0 8px;font-weight:700}
.catalog-student .portal-fields{grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr))}


.official-video{width:100%;aspect-ratio:16/9;border:0;border-radius:12px;background:#05090b}
.video-cover{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;margin-bottom:12px;background:#05090b}
.video-library-grid{align-items:start}.video-library-grid h4{font-size:1.08rem;margin:0}
#resurse-video{scroll-margin-top:24px}
.study-notes section.lesson-takeaway{border-left:4px solid #6ed1b2;background:#102c2a}
.study-notes section.lesson-important{border-left:4px solid #f1c87a;background:#30291b}

.study-notes section{padding:16px 18px;border-bottom:1px solid #ffffff12}.study-notes h4{color:#f1c87a;font-size:1.08rem;margin:0 0 12px}.study-notes ol{line-height:1.85}.study-notes li{padding:4px 0 8px 6px}.lesson-check{padding:20px!important;border-radius:12px;background:#192a2e}.lesson-video-body{width:100%}