:root{--bg:#071224;--panel:#101f35;--panel2:#142944;--text:#f4f7fb;--muted:#aab8ca;--accent:#36c6f4;--red:#c51f32;--line:#27405e;--ok:#32c48d}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#071224,#09182b 60%,#071224);color:var(--text);font:16px/1.6 Inter,system-ui,-apple-system,Segoe UI,sans-serif}a{color:inherit}.top{position:sticky;top:0;z-index:4;display:flex;justify-content:space-between;align-items:center;padding:18px max(5vw,24px);background:rgba(7,18,36,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.brand{font-size:1.25rem;font-weight:850;text-decoration:none}.brand span{color:var(--red)}nav{display:flex;align-items:center;gap:18px}nav a{text-decoration:none;color:var(--muted)}button,.button{border:0;border-radius:9px;padding:11px 16px;background:var(--accent);color:#03131e;font-weight:800;cursor:pointer;text-decoration:none}.hero{min-height:72vh;display:grid;grid-template-columns:1.3fr .7fr;gap:50px;align-items:center;padding:72px max(7vw,28px)}.hero h1{font-size:clamp(2.7rem,6vw,5.7rem);line-height:1.02;margin:.15em 0}.hero h1 span{color:var(--accent)}.hero p{max-width:720px;color:var(--muted);font-size:1.12rem}.eyebrow{color:var(--accent)!important;font-size:.78rem!important;font-weight:850;letter-spacing:.18em}.hero-card,.card,.lesson,.quiz-card,.admin-card{background:linear-gradient(145deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:0 20px 60px #0005}.hero-card li{margin:.75rem 0;color:var(--muted)}.section{max-width:1200px;margin:auto;padding:60px max(4vw,20px)}h2{font-size:clamp(2rem,4vw,3.3rem);margin:.2em 0 1em}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:20px}.card h3{font-size:1.35rem}.card p,.muted{color:var(--muted)}.card .meta{font-size:.8rem;color:var(--accent);font-weight:800;text-transform:uppercase}.modules{display:grid;gap:18px}.module{border-top:1px solid var(--line);padding-top:20px}.lesson-link{display:flex;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid var(--line);text-decoration:none}.lesson-link span{color:var(--muted)}.lesson{max-width:850px;margin:auto}.lesson h1{font-size:clamp(2.2rem,5vw,4rem)}.lesson img{max-width:100%}.callout{border-left:4px solid var(--accent);background:#0a1930;padding:16px;margin:22px 0}.choices{display:grid;gap:12px;margin:24px 0}.choice{width:100%;text-align:left;background:#152a44;color:var(--text);border:1px solid var(--line)}.choice.correct{border-color:var(--ok);background:#12372f}.choice.wrong{border-color:#ef6072;background:#3a1822}.notice{padding:14px;border-radius:10px;background:#0a1930;border:1px solid var(--line)}footer{padding:35px max(5vw,24px);border-top:1px solid var(--line);color:var(--muted);font-size:.84rem}input,textarea,select{width:100%;padding:11px;border-radius:8px;border:1px solid var(--line);background:#091629;color:var(--text)}label{display:grid;gap:6px;font-weight:700}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.admin-shell{max-width:1280px;margin:auto;padding:30px}.admin-nav{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}.admin-nav button{background:#152a44;color:var(--text)}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}@media(max-width:760px){.hero{grid-template-columns:1fr;min-height:auto;padding-top:48px}.top{align-items:flex-start}.top nav{gap:10px;flex-wrap:wrap;justify-content:flex-end}.form-grid{grid-template-columns:1fr}.lesson-link{display:block}}

/* sri-tech-theme-v1 */
.sri-brand{display:inline-flex;align-items:center;gap:10px}.sri-brand img{width:48px;height:48px;object-fit:contain}.sri-brand span{font-weight:850}.sri-brand b{color:#c51f32}.theme-control{display:inline-flex;gap:5px;padding:4px;border:1px solid var(--line);border-radius:11px;background:var(--panel)}.theme-control button{padding:7px 10px;background:transparent;color:var(--muted)}.theme-control button[aria-pressed="true"]{background:var(--accent);color:#03131e}body.light-theme{--bg:#f3f6f9;--panel:#fff;--panel2:#f7f9fc;--text:#142033;--muted:#52657a;--accent:#087fa8;--red:#c51f32;--line:#d2dae4;--ok:#16805d;background:radial-gradient(circle at 10% 0,rgba(8,127,168,.10),transparent 32%),linear-gradient(180deg,#f8fafc,#edf2f7);color:var(--text)}body.light-theme .top{background:rgba(255,255,255,.94)}body.light-theme .hero-card,body.light-theme .card,body.light-theme .lesson,body.light-theme .quiz-card,body.light-theme .admin-card{background:linear-gradient(145deg,#fff,#f4f7fa);box-shadow:0 18px 50px rgba(40,55,75,.12)}body.light-theme .callout,body.light-theme .notice{background:#eef6fa}body.light-theme input,body.light-theme textarea,body.light-theme select{background:#fff;color:#142033}@media(max-width:760px){.sri-brand img{width:40px;height:40px}.sri-brand span{font-size:.95rem}}

/* sri-tech-final-brand-theme-v2 */
.sri-text-brand{display:inline-flex!important;align-items:center;text-decoration:none}.sri-text-brand span{color:#fff;font-size:1.25rem;font-weight:900}.sri-text-brand b{color:#fff;font-weight:900}body.light-theme{--bg:#f4f7fb;--panel:#fff;--panel2:#eef4f8;--text:#0f1e32;--muted:#52657a;--accent:#087fa8;--red:#b40101;--line:#c9d7e4;--ok:#16805d;background:radial-gradient(circle at 10% 0,rgba(56,189,248,.16),transparent 34%),linear-gradient(145deg,#f8fbfd,#e8f0f6 62%,#f4f7fb)!important;color:var(--text)!important}body.light-theme .top{background:rgba(255,255,255,.96)!important;border-bottom-color:#c9d7e4!important}body.light-theme .sri-text-brand span{color:#14243a!important}body.light-theme .sri-text-brand b{color:#b40101!important}body.light-theme .hero-card,body.light-theme .card,body.light-theme .lesson,body.light-theme .quiz-card,body.light-theme .admin-card{background:linear-gradient(145deg,#fff,#eef4f8)!important;border-color:#c9d7e4!important;box-shadow:0 18px 48px rgba(35,55,75,.14)!important}body.light-theme .hero h1 span,body.light-theme .eyebrow,body.light-theme .card .meta{color:#087fa8!important}body.light-theme nav a,body.light-theme .card p,body.light-theme .muted,body.light-theme footer{color:#52657a!important}body.light-theme .theme-control{background:#fff!important;border-color:#c9d7e4!important}body.light-theme .theme-control button{color:#36506a!important}body.light-theme .theme-control button[aria-pressed="true"]{background:#38bdf8!important;color:#031827!important}body.dark-theme .sri-text-brand span,body.dark-theme .sri-text-brand b{color:#fff!important}


/* sri-tech-course-catalog-v1 */
#course-grid{grid-template-columns:repeat(auto-fit,minmax(290px,1fr));align-items:stretch}
#course-grid .card{position:relative;overflow:hidden;display:flex;flex-direction:column;min-height:430px;padding-top:184px;isolation:isolate}
#course-grid .card::before{content:"";position:absolute;inset:0 0 auto 0;height:156px;background:linear-gradient(135deg,#0b1c32,#173b60);z-index:-2}
#course-grid .card::after{content:"";position:absolute;width:190px;height:190px;right:-62px;top:-72px;border:28px solid rgba(255,255,255,.10);border-radius:50%;z-index:-1}
.course-visual{position:absolute;left:22px;right:22px;top:22px;height:112px;display:flex;align-items:center;justify-content:space-between;gap:16px;color:#fff}
.course-mark{width:78px;height:78px;display:grid;place-items:center;border-radius:22px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.26);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 12px 30px rgba(0,0,0,.22);font-size:25px;font-weight:950;letter-spacing:-1px}
.course-art{width:118px;height:78px;position:relative}
.course-art i{position:absolute;display:block;border:2px solid rgba(255,255,255,.72);background:rgba(255,255,255,.08);box-shadow:0 8px 18px rgba(0,0,0,.18)}
.course-art i:nth-child(1){width:74px;height:46px;right:2px;top:4px;border-radius:10px}
.course-art i:nth-child(2){width:48px;height:34px;left:2px;bottom:2px;border-radius:50%}
.course-art i:nth-child(3){width:9px;height:9px;right:18px;top:23px;border-radius:50%;background:#fff}
#course-grid .card .button{margin-top:auto;align-self:flex-start}
#course-grid .card[data-course="server-plus-sk0-005"]::before{background:linear-gradient(135deg,#34090d,#b40101 62%,#ef4444)}
#course-grid .card[data-course="network-plus"]::before{background:linear-gradient(135deg,#061c2a,#087fa8 60%,#38bdf8)}
#course-grid .card[data-course="azure-fundamentals"]::before{background:linear-gradient(135deg,#071d46,#1268d4 58%,#5ea9ff)}
#course-grid .card[data-course="azure-administrator"]::before{background:linear-gradient(135deg,#17133f,#5b3cc4 60%,#9b87f5)}
#course-grid .card[data-course="cdcp"]::before{background:linear-gradient(135deg,#10251d,#16805d 58%,#44e08a)}
body.light-theme #course-grid .card{background:linear-gradient(145deg,#fff,#eef4f8)!important}
@media(max-width:520px){#course-grid .card{min-height:405px;padding-top:174px}.course-mark{width:68px;height:68px;border-radius:19px;font-size:22px}}