:root{
  --bg:#0b1020;--bg2:#0f1530;--panel:#141b36;--panel2:#1a2246;
  --text:#e8ecf5;--muted:#9aa3c2;--line:#242c55;
  --brand:#f7c948;--brand2:#ffd97a;--accent:#4d7dff;--accent2:#7a5bff;
  --ok:#26c281;--warn:#ff6b6b;
  --radius:12px;--radius-lg:18px;--shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-sm:0 4px 12px rgba(0,0,0,.25);
  --container:1200px;
  --font: system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans Bengali","SolaimanLipi","Siyam Rupali",Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.7;font-size:16px;
  background-image:
    radial-gradient(1200px 600px at 10% -10%,rgba(77,125,255,.18),transparent 60%),
    radial-gradient(900px 500px at 100% 0%,rgba(247,201,72,.10),transparent 60%),
    linear-gradient(180deg,#0a0f1f 0%,#0b1020 100%);
  min-height:100vh;
}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand2)}
img,svg{max-width:100%;height:auto;display:block}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}

/* Topbar */
.topbar{background:#070b18;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:36px;flex-wrap:wrap;gap:8px}
.topbar a{color:var(--muted)}
.topbar a:hover{color:var(--brand)}

/* Header */
.site-header{background:rgba(10,15,31,.92);backdrop-filter:saturate(140%) blur(6px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;gap:18px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo svg{height:40px;width:auto;max-height:44px}
.logo-text{font-weight:800;letter-spacing:.5px;color:var(--text);font-size:20px}
.main-nav{flex:1;display:flex;justify-content:center}
.main-nav ul{list-style:none;display:flex;gap:6px;margin:0;padding:0;flex-wrap:wrap}
.main-nav a{display:inline-block;padding:8px 12px;border-radius:8px;color:#d8def0;font-weight:600;font-size:14.5px}
.main-nav a:hover,.main-nav a.active{background:var(--panel2);color:var(--brand)}
.header-cta{display:flex;gap:10px;flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 18px;border-radius:10px;font-weight:700;cursor:pointer;border:1px solid transparent;font-size:14.5px;transition:.2s;text-align:center}
.btn-register{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#1a1200}
.btn-register:hover{filter:brightness(1.05);color:#1a1200}
.btn-login{background:transparent;color:var(--text);border-color:var(--line)}
.btn-login:hover{border-color:var(--brand);color:var(--brand)}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;padding:12px 22px}
.btn-primary:hover{color:#fff;filter:brightness(1.08)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text);padding:10px 18px}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.menu-toggle{display:none;background:transparent;border:1px solid var(--line);color:var(--text);width:42px;height:42px;border-radius:10px;cursor:pointer}

/* Banner */
.home-banner{margin-top:0}
.home-banner img{width:100%;display:block;border-bottom:1px solid var(--line)}

/* Sections */
section{padding:56px 0}
section.tight{padding:36px 0}
h1,h2,h3,h4{font-family:var(--font);color:#fff;line-height:1.25;margin:0 0 14px}
h1{font-size:clamp(26px,4vw,40px);font-weight:800}
h2{font-size:clamp(22px,3vw,30px);font-weight:800}
h3{font-size:20px;font-weight:700}
p{color:#d2d8ec;margin:0 0 14px}
ul.bullets{padding-left:20px}
ul.bullets li{margin-bottom:8px;color:#d2d8ec}

.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;gap:12px;flex-wrap:wrap}
.section-title .kicker{color:var(--brand);font-weight:700;text-transform:uppercase;letter-spacing:1px;font-size:12px;margin-bottom:6px}
.section-title p{max-width:720px;color:var(--muted);margin:0}

/* Shortcut grid */
.shortcut-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.shortcut-card{background:linear-gradient(160deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:var(--radius);padding:18px 14px;text-align:center;transition:.25s;display:block;color:var(--text)}
.shortcut-card:hover{transform:translateY(-3px);border-color:var(--brand);color:var(--text);box-shadow:var(--shadow-sm)}
.shortcut-card .sc-ico{height:44px;margin:0 auto 10px;display:flex;align-items:center;justify-content:center}
.shortcut-card .sc-ico svg{height:38px;width:38px;stroke:var(--brand);fill:none;stroke-width:1.6}
.shortcut-card h4{font-size:15px;margin:0 0 4px;color:#fff}
.shortcut-card span{font-size:12.5px;color:var(--muted)}

/* Feature cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:.25s}
.feature-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.feature-card h3{color:var(--brand);margin-bottom:10px}

/* Split panel */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center}
.panel{background:linear-gradient(160deg,var(--panel),#101634);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}
.panel h2{margin-top:0}
.panel .btn{margin-top:12px}

/* Archive listing */
.archive-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.arch-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.arch-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.arch-card .thumb{aspect-ratio:16/9;background:linear-gradient(135deg,#1b2450,#2a326a);position:relative;overflow:hidden}
.arch-card .thumb svg{position:absolute;inset:0;width:100%;height:100%}
.arch-card .body{padding:18px}
.arch-card .meta{font-size:12px;color:var(--muted);margin-bottom:8px}
.arch-card h3{font-size:17px;margin:0 0 8px;color:#fff;overflow-wrap:anywhere;word-break:break-word;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.arch-card p{font-size:14px;color:var(--muted);margin:0 0 14px;overflow-wrap:anywhere;word-break:break-word;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.arch-card .more{color:var(--brand);font-weight:700;font-size:13.5px}

/* News / article */
.article-body{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow);overflow-wrap:anywhere;word-break:break-word;min-width:0}
.article-body h1,.article-body h2,.article-body h3,.article-body h4,.article-body p,.article-body div,.article-body li{overflow-wrap:anywhere;word-break:break-word}
.article-body h2{margin-top:28px}
.article-body h3{margin-top:20px;color:var(--brand2)}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{margin:0 6px}

/* FAQ */
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:10px;overflow:hidden}
.faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:700;color:#fff;user-select:none}
.faq-q .arr{width:14px;height:14px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(45deg);transition:.2s}
.faq-item.open .faq-q .arr{transform:rotate(-135deg)}
.faq-a{padding:0 20px 16px;display:none;color:#d2d8ec}
.faq-item.open .faq-a{display:block}

/* CTA */
.cta-block{background:linear-gradient(120deg,rgba(247,201,72,.12),rgba(77,125,255,.12));border:1px solid var(--line);border-radius:var(--radius-lg);padding:36px;text-align:center}
.cta-block h2{margin-bottom:10px}
.cta-block .btn{margin:10px 6px 0}

/* Footer */
.site-footer{background:#05080f;border-top:1px solid var(--line);padding:48px 0 0;margin-top:40px;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:28px}
.footer-grid h4{color:#fff;font-size:15px;margin:0 0 14px;letter-spacing:.3px}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin-bottom:8px;font-size:14px}
.footer-grid a{color:#b7bed6}
.footer-grid a:hover{color:var(--brand)}
.footer-contact p{font-size:14px;color:#b7bed6;margin:0 0 6px}
.footer-bottom{border-top:1px solid var(--line);margin-top:36px;padding:18px 0;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:var(--muted)}

/* Hero variants */
.hero{padding:64px 0 40px}
.hero .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}
.hero .hero-grid.reverse{grid-template-columns:.9fr 1.1fr}
.hero-art{background:linear-gradient(135deg,#1a2451,#24306b);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);min-height:260px;display:flex;align-items:center;justify-content:center}
.hero-tag{display:inline-block;background:rgba(247,201,72,.12);color:var(--brand);padding:6px 12px;border-radius:999px;font-size:12.5px;font-weight:700;margin-bottom:12px}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:step}
.step{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative}
.step:before{counter-increment:step;content:"0" counter(step);position:absolute;top:14px;right:18px;color:var(--brand);font-weight:800;font-size:22px;opacity:.7}
.step h4{margin:0 0 8px;color:#fff;font-size:16px}
.step p{margin:0;font-size:14px;color:var(--muted)}

/* Tables */
.table-like{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.table-like th,.table-like td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}
.table-like th{background:#0f1631;color:#fff}
.table-like tr:last-child td{border-bottom:none}

/* 404 */
.page-404{padding:80px 0;text-align:center}
.page-404 h1{font-size:72px;color:var(--brand)}

/* Utility */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.muted{color:var(--muted)}
.center{text-align:center}
.mt-20{margin-top:20px}
.mt-30{margin-top:30px}

@media (max-width:1024px){
  .shortcut-grid{grid-template-columns:repeat(3,1fr)}
  .feature-grid,.archive-list{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .split,.hero .hero-grid,.hero .hero-grid.reverse{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:#0a0f1f;border-bottom:1px solid var(--line);padding:14px 16px;z-index:60}
  .main-nav.open{display:flex}
  .main-nav ul{flex-direction:column;width:100%;gap:2px}
  .main-nav a{display:block;padding:10px 12px}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-cta .btn{padding:8px 12px;font-size:13px}
  .logo svg{height:32px}
  .logo-text{font-size:17px}
  .shortcut-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid,.archive-list,.grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  section{padding:40px 0}
  .article-body{padding:20px}
}