:root {
  --bg: #030518;
  --bg-2: #12001a;
  --surface: #07091f;
  --surface-2: #0d1032;
  --line: rgba(255, 255, 255, 0.14);
  --muted: #c8d0e8;
  --text: #ffffff;
  --gold: #ffd45a;
  --magenta: #d900bf;
  --magenta-2: #ff43d7;
  --cyan: #57d7ff;
  --danger: #ff4d72;
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  font-family: "Noto Sans Bengali", "Nirmala UI", "Hind Siliguri", Arial, sans-serif;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(3,5,24,.88), rgba(3,5,24,.98)),
    url("/assets/ku9-bg.jpg") center top / cover fixed no-repeat;
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.shell { width: min(1216px, calc(100% - 64px)); margin: 0 auto; }
.site-wrap { min-height: 100vh; }

.topbar {
  padding: 20px 0 26px;
  background: linear-gradient(90deg, rgba(3,5,24,.96), rgba(33,0,48,.96));
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; flex-direction: column; gap: 8px; }
.brand img { width: 172px; height: auto; }
.brand span { color: var(--muted); font-size: .9rem; font-weight: 700; }
.top-actions { display: flex; gap: 16px; flex-wrap: wrap; justify-content: flex-end; }
.btn,
.top-actions a,
.inline-btn {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--magenta-2);
  font-size: 1.06rem;
  font-weight: 900;
  line-height: 1.15;
}
.btn.primary,
.top-actions .primary,
.inline-btn {
  color: #210915;
  background: var(--gold);
  border-color: var(--gold);
  box-shadow: 0 12px 34px rgba(255, 212, 90, .18);
}
.btn.ghost,
.top-actions .ghost {
  color: #fff;
  background: rgba(7,9,31,.75);
}

.nav-band { background: linear-gradient(90deg, #b600a3, var(--magenta)); }
.main-nav { min-height: 58px; display: flex; align-items: center; }
.main-nav a {
  min-height: 58px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 28px;
  color: #fff;
  font-weight: 900;
  border-left: 1px solid rgba(255,255,255,.08);
}
.main-nav a.active,
.main-nav a:hover { background: rgba(0,0,0,.22); color: var(--gold); }

.hero { padding: 62px 0 36px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(380px, .9fr);
  gap: 42px;
  align-items: center;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 24px;
  font-size: 4.6rem;
  line-height: 1.03;
  font-weight: 1000;
  letter-spacing: 0;
  overflow-wrap: break-word;
}
h1 span { color: var(--gold); }
.lead { max-width: 720px; color: #e4e9ff; font-size: 1.12rem; line-height: 1.85; font-weight: 650; }
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 30px; }
.hero-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: #07091f;
  border: 1px solid rgba(255, 67, 215, .45);
  box-shadow: 0 28px 70px rgba(0,0,0,.38);
}
.hero-media img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }

.category-rail {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  padding: 8px 0 36px;
}
.rail-item {
  min-height: 96px;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,67,215,.42);
  background: rgba(13,16,50,.8);
}
.rail-item span { color: var(--gold); font-weight: 1000; }
.rail-item strong { display: block; margin-top: 8px; font-size: 1.04rem; }

.section { padding: 46px 0; }
.section.dark { background: rgba(3,5,24,.72); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}
.section-head h2 { margin-bottom: 0; font-size: 2.45rem; line-height: 1.18; }
.section-head p { max-width: 560px; margin-bottom: 0; color: var(--muted); line-height: 1.7; }

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1fr);
  gap: 24px;
}
.intro-copy,
.feature-list,
.article-body,
.side-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(7,9,31,.82);
}
.intro-copy { padding: 26px; }
.intro-copy p,
.article-body p,
.article-body li,
.side-panel p,
.side-panel li { color: #dbe3ff; line-height: 1.82; }
.feature-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; overflow: hidden; background: rgba(255,255,255,.1); }
.feature-item { padding: 22px; background: rgba(8,10,34,.95); }
.feature-item span,
.card span,
.article-card span { color: var(--gold); font-weight: 1000; font-size: .92rem; }
.feature-item h3 { margin: 8px 0 8px; font-size: 1.2rem; }
.feature-item p { margin-bottom: 0; color: var(--muted); line-height: 1.66; }

.card-grid,
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card,
.article-card {
  min-width: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid rgba(255,67,215,.35);
  background: rgba(7,9,31,.9);
}
.card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.card div,
.article-card { padding: 18px; }
.card h3,
.article-card h3 { margin: 8px 0 10px; font-size: 1.26rem; line-height: 1.35; }
.card p,
.article-card p { margin-bottom: 14px; color: var(--muted); line-height: 1.68; }
.read-more { color: var(--magenta-2); font-weight: 1000; }

.safety-band {
  background: linear-gradient(90deg, rgba(214,0,191,.92), rgba(82,21,124,.92));
}
.safety-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; }
.safety-list li { padding: 18px; border-radius: var(--radius); border: 1px solid rgba(255,255,255,.22); background: rgba(0,0,0,.18); line-height: 1.65; }

.sub-hero { padding: 46px 0; border-bottom: 1px solid var(--line); }
.sub-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(330px, .72fr); gap: 28px; align-items: center; }
.sub-media { border-radius: var(--radius); border: 1px solid rgba(255,67,215,.4); overflow: hidden; background: #07091f; }
.sub-media img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.sub-hero h1,
.article-head h1 { font-size: 3.4rem; }
.layout,
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 22px; align-items: start; }
.guide-panel { padding: 24px; border-radius: var(--radius); border: 1px solid var(--line); background: rgba(7,9,31,.86); }
.guide-panel h2,
.side-panel h2,
.article-body h2 { color: #fff; }
.guide-panel p,
.guide-panel li { color: #dbe3ff; line-height: 1.82; }
.guide-panel ul,
.side-panel ul,
.article-body ul,
.article-body ol { padding-left: 22px; }
.side-panel { padding: 20px; }
.side-panel a { display: block; margin: 9px 0; }

.article-head { padding: 42px 0 30px; border-bottom: 1px solid var(--line); }
.article-meta { display: flex; gap: 10px; flex-wrap: wrap; color: var(--muted); font-weight: 900; }
.article-body { padding: 24px; }
.article-image { width: 100%; margin-bottom: 22px; border-radius: var(--radius); aspect-ratio: 16 / 9; object-fit: cover; }
.article-body h2 { margin: 26px 0 10px; font-size: 1.5rem; }
.check-table { width: 100%; margin: 18px 0; border-collapse: collapse; border: 1px solid var(--line); }
.check-table th,
.check-table td { padding: 13px 14px; border-bottom: 1px solid var(--line); text-align: left; color: #dbe3ff; line-height: 1.7; }
.check-table th { color: #210915; background: var(--gold); }
.notice { margin: 22px 0; padding: 16px; border-radius: var(--radius); border-left: 5px solid var(--gold); background: rgba(255,212,90,.12); color: #fff; line-height: 1.75; }
.faq-item { padding: 16px 0; border-top: 1px solid var(--line); }
.faq-item h3 { margin-bottom: 8px; font-size: 1.08rem; }
.pager,
.article-next { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.pager a,
.pager span,
.article-next a { padding: 10px 13px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(7,9,31,.9); color: #fff; font-weight: 900; }

.footer { padding: 34px 0 18px; border-top: 1px solid var(--line); background: #02030e; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr)); gap: 22px; }
.footer h2,
.footer h3 { color: #fff; }
.footer p,
.footer a { color: var(--muted); line-height: 1.75; }
.footer a { display: block; margin: 7px 0; }
.copyright { margin-top: 22px; padding-top: 14px; border-top: 1px solid var(--line); color: #aab4d3; font-size: .94rem; }

@media (max-width: 980px) {
  .shell { width: min(100% - 32px, 1216px); }
  .hero-grid,
  .sub-grid,
  .intro-grid,
  .layout,
  .article-layout,
  .footer-grid { grid-template-columns: 1fr; }
  h1 { font-size: 3.6rem; }
  .sub-hero h1,
  .article-head h1 { font-size: 2.8rem; }
  .category-rail,
  .card-grid,
  .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .safety-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 22px, 1216px); }
  .topbar-inner,
  .section-head { align-items: flex-start; flex-direction: column; }
  .brand img { width: 154px; }
  .top-actions,
  .hero-actions { width: 100%; }
  .top-actions a,
  .hero-actions a { width: 100%; }
  .main-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .main-nav a { min-height: 48px; padding: 10px 8px; font-size: .95rem; text-align: center; }
  .hero { padding: 34px 0 24px; }
  h1 { font-size: 2.24rem; line-height: 1.08; overflow-wrap: anywhere; }
  .sub-hero h1,
  .article-head h1 { font-size: 2rem; line-height: 1.12; }
  .lead { font-size: 1rem; }
  .category-rail,
  .card-grid,
  .article-grid,
  .feature-list,
  .safety-list { grid-template-columns: 1fr; }
  .section { padding: 34px 0; }
  .intro-copy,
  .guide-panel,
  .article-body,
  .side-panel { padding: 18px; }
}