/* DH Academy — black & white brand, one blue accent, yellow highlight */
:root {
  --ink: #0b0d12;
  --ink-2: #1b1f2a;
  --text: #1f2430;
  --muted: #5b6475;
  --line: #e4e7ee;
  --bg: #ffffff;
  --surface: #f5f7fb;
  --blue: #1f4fe0;
  --blue-d: #163bb0;
  --blue-50: #eef3ff;
  --navy: #0d1b45;
  --yellow: #ffd23f;
  --yellow-d: #f2bd00;
  --teal-50: #e2f3ef;
  --teal-100: #c8eae2;
  --wa: #25d366;
  --wa-d: #1da851;
  --danger: #c62828;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-lg: 0 20px 50px rgba(13, 27, 69, .14);
  --font-head: 'Anek Bangla', 'Hind Siliguri', system-ui, sans-serif;
  --font-body: 'Hind Siliguri', 'Anek Bangla', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --wrap: 1180px;
  --hdr-h: 72px;
}

/* ---------- language switching ---------- */
html:not([data-lang="en"]) .en { display: none !important; }
html[data-lang="en"] .bn { display: none !important; }

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--hdr-h) + 12px); }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--font-head); color: var(--ink); line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.005em; }
h1 { font-size: clamp(30px, 5vw, 52px); font-weight: 800; }
h2 { font-size: clamp(24px, 3.2vw, 36px); font-weight: 700; }
h3 { font-size: 19px; font-weight: 700; }
p { margin: 0 0 1em; }
mark { background: none; color: inherit; }
.ic { width: 20px; height: 20px; flex: none; }
:focus-visible { outline: 3px solid var(--yellow); outline-offset: 2px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 860px; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.center.hero-btns { justify-content: center; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; }
.skip:focus { left: 8px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 10px 20px;
  border-radius: 999px; border: 2px solid transparent;
  font-family: var(--font-head); font-weight: 700; font-size: 16px; line-height: 1.2;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background .15s, color .15s, border-color .15s, transform .15s, box-shadow .15s;
}
.btn:active { transform: translateY(1px); }
.btn-sm { min-height: 40px; padding: 8px 16px; font-size: 15px; }
.btn-lg { min-height: 52px; padding: 12px 26px; font-size: 17px; }
.btn-block { width: 100%; }
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 6px 16px rgba(31, 79, 224, .25); }
.btn-primary:hover { background: var(--blue-d); }
.btn-outline { background: #fff; color: var(--blue); border-color: var(--blue); }
.btn-outline:hover { background: var(--blue-50); }
.btn-wa { background: var(--wa); color: #06331a; }
.btn-wa:hover { background: var(--wa-d); color: #fff; }
.btn-yellow { background: var(--yellow); color: var(--ink); }
.btn-yellow:hover { background: var(--yellow-d); }
.btn-ghost-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .5); }
.btn-fb { background: #1877f2; color: #fff; }
.btn-fb:hover { background: #0f5fcc; }
.btn-ghost-light:hover { background: rgba(255, 255, 255, .1); border-color: #fff; }

/* ---------- top bar + header ---------- */
.topbar { background: var(--ink); color: #d6d9e0; font-size: 14px; }
.topbar-in { display: flex; gap: 22px; align-items: center; min-height: 38px; overflow: hidden; }
.topbar a, .topbar span { display: inline-flex; align-items: center; gap: 7px; color: inherit; text-decoration: none; white-space: nowrap; }
.topbar a:hover { color: #fff; }
.topbar .ic { width: 15px; height: 15px; color: var(--yellow); }
.tb-addr { margin-left: auto; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .94); backdrop-filter: saturate(1.4) blur(10px); -webkit-backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.hdr { display: flex; align-items: center; gap: 24px; min-height: var(--hdr-h); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); flex: none; }
.brand img { width: 44px; height: 44px; border-radius: 11px; }
.brand-txt { display: flex; flex-direction: column; line-height: 1.05; }
.brand-txt b { font-family: var(--font-head); font-size: 21px; font-weight: 800; letter-spacing: .01em; }
.brand-txt small { font-size: 10.5px; font-weight: 600; letter-spacing: .16em; color: var(--muted); margin-top: 3px; }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a { padding: 8px 12px; border-radius: 999px; color: var(--text); text-decoration: none; font-weight: 600; font-size: 16px; white-space: nowrap; }
.nav a:hover { background: var(--surface); color: var(--ink); }
.nav a[aria-current="page"] { color: var(--blue); background: var(--blue-50); }
.nav .nav-cta { display: none; }
.hdr-actions { display: flex; align-items: center; gap: 10px; }
.lang-btn { display: inline-flex; align-items: center; gap: 6px; height: 40px; padding: 0 14px; border-radius: 999px; border: 1.5px solid var(--line); background: #fff; color: var(--ink); font: 600 15px var(--font-body); cursor: pointer; }
.lang-btn:hover { border-color: var(--ink); }
.lang-btn .ic { width: 17px; height: 17px; }
.menu-btn { display: none; width: 44px; height: 44px; border-radius: 12px; border: 1.5px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; align-items: center; justify-content: center; }
.menu-btn .ic + .ic { display: none; }
.nav-open .menu-btn .ic { display: none; }
.nav-open .menu-btn .ic + .ic { display: block; }

/* ---------- sections ---------- */
.section { padding: 80px 0; }
.section--first { padding-top: 48px; }
.section--tint { background: var(--surface); }
.sec-head { max-width: 720px; margin: 0 auto 40px; text-align: center; }
.sec-head p { color: var(--muted); }
.eyebrow { display: inline-block; font-family: var(--font-head); font-weight: 700; font-size: 14px; letter-spacing: .06em; text-transform: uppercase; color: var(--blue); background: var(--blue-50); padding: 5px 14px; border-radius: 999px; margin-bottom: 14px; }
.eyebrow--light { color: var(--yellow); background: rgba(255, 210, 63, .12); }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; background: linear-gradient(180deg, #fff 0%, #f7fbfa 100%); }
.hero-in { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; padding-top: 56px; padding-bottom: 72px; }
.hero h1 mark { display: inline-block; background: var(--ink); color: #fff; padding: 0 .32em .06em; border-radius: .32em; transform: rotate(-1.5deg); box-shadow: 4px 4px 0 var(--yellow); }
.hero-sub { font-size: 19px; color: var(--muted); max-width: 580px; }
.hero-sub strong { color: var(--ink); background: linear-gradient(transparent 62%, rgba(255, 210, 63, .7) 0); }
.hero-btns { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 24px; }
.hero-points { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 22px; color: var(--ink-2); font-weight: 600; font-size: 15.5px; }
.hero-points li { display: inline-flex; align-items: center; gap: 6px; }
.hero-points .ic { width: 18px; height: 18px; color: var(--wa-d); stroke-width: 3; }
.hero-art { position: relative; justify-self: center; width: min(100%, 440px); }
.hero-blob { position: absolute; inset: 8% -4% 0 -4%; background: var(--teal-50); border-radius: 46% 54% 40% 60% / 52% 44% 56% 48%; }
.hero-blob::after { content: ''; position: absolute; width: 110px; height: 110px; right: -6px; top: -26px; border-radius: 50%; background: var(--yellow); opacity: .9; z-index: -1; }
.hero-photo { position: relative; margin: 0 auto; width: 78%; border-radius: 200px 200px 28px 28px; overflow: hidden; border: 6px solid #fff; box-shadow: var(--shadow-lg); background: var(--teal-100); }
.hero-photo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 18%; }
.hero-photo figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 36px 16px 14px; background: linear-gradient(transparent, rgba(11, 13, 18, .82)); color: #fff; display: flex; flex-direction: column; line-height: 1.3; }
.hero-photo figcaption b { font-family: var(--font-head); font-size: 18px; }
.hero-photo figcaption span { font-size: 14px; opacity: .85; }
.hero-badge { position: absolute; display: flex; align-items: center; gap: 10px; background: #fff; border-radius: 14px; padding: 10px 14px; box-shadow: var(--shadow-lg); line-height: 1.25; }
.hero-badge .ic { width: 36px; height: 36px; padding: 8px; border-radius: 10px; background: var(--blue); color: #fff; }
.hero-badge b { display: block; font-family: var(--font-head); color: var(--ink); font-size: 16px; }
.hero-badge span { font-size: 13.5px; color: var(--muted); }
.hb-1 { left: -4%; top: 22%; }
.hb-2 { right: -4%; bottom: 14%; }
.hb-2 .ic { background: var(--ink); color: var(--yellow); }

/* ---------- features strip ---------- */
.features-strip { background: var(--ink); color: #fff; padding: 34px 0; }
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px 32px; }
.feat { display: flex; gap: 14px; align-items: flex-start; }
.feat > .ic { width: 44px; height: 44px; padding: 10px; border-radius: 12px; background: rgba(255, 255, 255, .08); color: var(--yellow); }
.feat h3 { color: inherit; font-size: 17.5px; margin: 0 0 2px; }
.feat p { margin: 0; font-size: 15px; color: #b7bcc8; }
.feat-grid--cards .feat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; color: var(--text); }
.feat-grid--cards .feat > .ic { background: var(--blue-50); color: var(--blue); }
.feat-grid--cards .feat h3 { color: var(--ink); }
.feat-grid--cards .feat p { color: var(--muted); }

/* ---------- course filter / grid / card ---------- */
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 30px; }
.chip { min-height: 42px; padding: 8px 20px; border-radius: 999px; border: 1.5px solid var(--line); background: #fff; color: var(--text); font: 600 15.5px var(--font-body); cursor: pointer; }
.chip:hover { border-color: var(--blue); color: var(--blue); }
.chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.course-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s; }
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.course-card[hidden] { display: none; }
.cc-banner { display: block; padding: 12px 12px 0; text-decoration: none; }
.cc-body { display: flex; flex-direction: column; flex: 1; padding: 18px 20px 20px; }
.cc-body h3 { font-size: 19px; margin-bottom: 12px; }
.cc-body h3 a { color: var(--ink); text-decoration: none; }
.cc-body h3 a:hover { color: var(--blue); }
.cc-meta { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 6px; font-size: 14.5px; color: var(--muted); }
.cc-meta li { display: flex; gap: 8px; align-items: flex-start; }
.cc-meta .ic { width: 17px; height: 17px; margin-top: 3px; color: var(--blue); }
.cc-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: auto; }
.cc-actions .btn { padding-left: 10px; padding-right: 10px; font-size: 15px; min-height: 44px; }

.price { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 10px; margin-bottom: 16px; }
.p-now { font-family: var(--font-head); font-size: 28px; font-weight: 800; color: var(--ink); line-height: 1; }
.p-was { color: #8a91a1; font-size: 16px; text-decoration-thickness: 2px; text-decoration-color: var(--danger); }
.p-tag { font-size: 12.5px; font-weight: 700; color: #7a1c00; background: #ffe9a3; padding: 2px 10px; border-radius: 999px; align-self: center; }

/* course banner thumbnail (pure CSS) */
.banner { position: relative; overflow: hidden; aspect-ratio: 16 / 9; border-radius: 12px; color: #fff; padding: 16px 18px; display: flex; flex-direction: column; justify-content: flex-end; isolation: isolate; font-family: var(--font-head); }
.banner--hsc { background: radial-gradient(circle at 85% 20%, #3a6dff 0, transparent 55%), linear-gradient(135deg, #1f4fe0, #0f2f9c); }
.banner--ssc { background: radial-gradient(circle at 85% 20%, #2fb3ff 0, transparent 55%), linear-gradient(135deg, #1459d6, #0b2a7a); }
.banner--expat { background: radial-gradient(circle at 85% 20%, #3a3f4d 0, transparent 55%), linear-gradient(135deg, #15171d, #000); }
.banner::before { content: ''; position: absolute; inset: 0; z-index: -1; background-image: radial-gradient(rgba(255, 255, 255, .14) 1.2px, transparent 1.2px); background-size: 14px 14px; mask-image: linear-gradient(110deg, transparent 35%, #000 80%); -webkit-mask-image: linear-gradient(110deg, transparent 35%, #000 80%); }
.b-tag { position: absolute; top: 14px; left: 16px; font-size: 13px; font-weight: 700; letter-spacing: .04em; background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .3); padding: 2px 10px; border-radius: 999px; }
.b-stamp { position: absolute; top: 14px; right: 14px; font-size: 12.5px; font-weight: 800; color: var(--ink); background: var(--yellow); padding: 3px 10px; border-radius: 6px; transform: rotate(3deg); box-shadow: 0 3px 0 rgba(0, 0, 0, .25); }
.b-lvl { font-size: clamp(44px, 6vw, 58px); font-weight: 800; line-height: .9; letter-spacing: -.01em; text-shadow: 0 3px 0 rgba(0, 0, 0, .18); }
.b-year { align-self: flex-start; margin: 8px 0 6px; font-size: 15px; font-weight: 800; color: var(--ink); background: var(--yellow); padding: 2px 12px; border-radius: 6px; }
.banner--expat .b-year { background: #fff; }
.b-name { font-size: 17px; font-weight: 700; line-height: 1.25; max-width: 80%; }
.b-mono { position: absolute; right: -10px; bottom: -34px; z-index: -1; font-size: 150px; font-weight: 800; line-height: 1; color: transparent; -webkit-text-stroke: 2px rgba(255, 255, 255, .16); letter-spacing: -.04em; }
.banner--big { aspect-ratio: 21 / 9; padding: 28px 32px; border-radius: var(--radius); }
.banner--big .b-lvl { font-size: clamp(56px, 9vw, 96px); }
.banner--big .b-year { font-size: 20px; }
.banner--big .b-name { font-size: clamp(19px, 2.4vw, 26px); }
.banner--big .b-mono { font-size: 260px; bottom: -64px; }
.banner--big .b-tag { top: 22px; left: 28px; font-size: 15px; }
.banner--big .b-stamp { top: 22px; right: 24px; font-size: 15px; }

/* ---------- USP section ---------- */
.usp { background: var(--ink); color: #e9ebf0; position: relative; overflow: hidden; }
.usp::before { content: ''; position: absolute; width: 520px; height: 520px; right: -140px; top: -160px; border-radius: 50%; background: radial-gradient(circle, rgba(31, 79, 224, .35), transparent 70%); }
.usp-in { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }
.usp h2 { color: #fff; font-size: clamp(28px, 4vw, 44px); }
.usp h2 mark { color: var(--ink); background: var(--yellow); padding: 0 .25em; border-radius: .2em; }
.usp-copy > p { color: #b7bcc8; font-size: 18px; max-width: 560px; }
.usp-list { list-style: none; padding: 0; margin: 0 0 30px; display: grid; gap: 12px; }
.usp-list li { display: flex; align-items: center; gap: 12px; font-weight: 600; font-size: 17px; }
.usp-list .ic { width: 34px; height: 34px; padding: 7px; border-radius: 10px; background: rgba(255, 255, 255, .08); color: var(--yellow); }
.usp-logo img { width: 100%; max-width: 360px; margin: 0 auto; border-radius: 24px; box-shadow: 0 0 0 1px rgba(255, 255, 255, .08), 0 30px 60px rgba(0, 0, 0, .5); }

/* ---------- steps ---------- */
.steps { list-style: none; padding: 0; margin: 0 0 40px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: s; }
.step { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px 20px; }
.step-n { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 12px; background: var(--ink); color: var(--yellow); font: 800 19px var(--font-head); margin-bottom: 14px; }
.step h3 { font-size: 18px; }
.step p { margin: 0; color: var(--muted); font-size: 15.5px; }
.card .steps { grid-template-columns: repeat(2, 1fr); margin: 0; gap: 14px; }
.card .step { background: var(--surface); border: 0; padding: 18px; }

/* ---------- founder ---------- */
.founder { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: center; }
.founder-photo { position: relative; }
.founder-photo::before { content: ''; position: absolute; inset: 24px -18px -18px 24px; border-radius: var(--radius); background: var(--yellow); }
.founder-photo img { position: relative; border-radius: var(--radius); width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 15%; box-shadow: var(--shadow-lg); }
.founder-role { color: var(--blue); font-weight: 700; margin-top: -6px; }
.founder-copy h3 { margin-top: 24px; }
.founder-btns { display: flex; flex-wrap: wrap; gap: 12px; }
.cred-list { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 12px; }
.cred-list li { display: flex; gap: 12px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.cred-list .ic { width: 36px; height: 36px; padding: 8px; border-radius: 10px; background: var(--blue-50); color: var(--blue); }
.cred-list b { display: block; color: var(--ink); line-height: 1.35; }
.cred-list span { font-size: 15px; color: var(--muted); }
.founder--full { align-items: start; }
.founder--full .founder-photo { position: sticky; top: calc(var(--hdr-h) + 24px); }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; margin-bottom: 32px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.faq details[open] { border-color: #c9d4f5; box-shadow: var(--shadow); }
.faq summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 20px; font-family: var(--font-head); font-weight: 700; font-size: 17.5px; color: var(--ink); }
.faq summary::-webkit-details-marker { display: none; }
.faq-x { position: relative; flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--surface); }
.faq-x::before, .faq-x::after { content: ''; position: absolute; left: 50%; top: 50%; width: 12px; height: 2px; background: var(--ink); transform: translate(-50%, -50%); transition: transform .2s; }
.faq-x::after { transform: translate(-50%, -50%) rotate(90deg); }
details[open] .faq-x { background: var(--blue); }
details[open] .faq-x::before, details[open] .faq-x::after { background: #fff; }
details[open] .faq-x::after { transform: translate(-50%, -50%) rotate(0); }
.faq details p { padding: 0 20px 18px; margin: 0; color: var(--muted); }

/* ---------- CTA band ---------- */
.cta-band { background: var(--blue); color: #fff; padding: 56px 0; position: relative; overflow: hidden; }
.cta-band::after { content: 'DH'; position: absolute; right: -20px; bottom: -80px; font: 800 260px/1 var(--font-head); color: transparent; -webkit-text-stroke: 2px rgba(255, 255, 255, .14); }
.cta-in { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin-bottom: 6px; }
.cta-band p { margin: 0; color: #dbe4ff; font-size: 18px; }
.cta-btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- page hero (inner) ---------- */
.page-hero { background: linear-gradient(180deg, var(--teal-50), #fff); padding: 40px 0 28px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(28px, 4.2vw, 44px); margin-bottom: 10px; }
.page-hero .lede { color: var(--muted); font-size: 18px; max-width: 760px; margin: 0; }
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; font-size: 14.5px; color: var(--muted); margin-bottom: 12px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--blue); }

/* ---------- cards / lists ---------- */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.card h2 { font-size: 22px; margin-bottom: 16px; }
.incl-list, .incl-grid { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.incl-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.incl-grid li { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.incl-list li, .incl-grid li { display: flex; gap: 10px; align-items: flex-start; }
.incl-list .ic, .incl-grid .ic { width: 22px; height: 22px; padding: 3px; margin-top: 2px; border-radius: 50%; background: #dcfce7; color: #15803d; stroke-width: 3; }
.feat-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.feat-list li { display: flex; gap: 14px; align-items: flex-start; }
.fl-ic .ic { width: 42px; height: 42px; padding: 10px; border-radius: 12px; background: var(--blue-50); color: var(--blue); }
.feat-list h3 { margin: 0 0 2px; font-size: 18px; }
.feat-list p { margin: 0; color: var(--muted); }

/* ---------- course detail ---------- */
.course-layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 32px; align-items: start; }
.course-main { display: grid; gap: 24px; }
.course-aside { position: sticky; top: calc(var(--hdr-h) + 20px); }
.buy-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-lg); display: grid; gap: 12px; }
.buy-label { margin: 0; font-weight: 700; color: var(--muted); font-size: 14px; text-transform: uppercase; letter-spacing: .06em; }
.buy-card .price { margin: 0 0 4px; }
.buy-card .p-now { font-size: 38px; }
.buy-meta { list-style: none; padding: 14px 0; margin: 0 0 6px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; gap: 12px; }
.buy-meta li { display: flex; gap: 12px; align-items: flex-start; line-height: 1.4; }
.buy-meta .ic { color: var(--blue); margin-top: 2px; }
.buy-meta b { display: block; color: var(--ink); font-size: 15px; }
.buy-meta span { font-size: 15px; color: var(--muted); }
.buy-note { display: flex; align-items: center; gap: 8px; justify-content: center; margin: 4px 0 0; font-size: 14.5px; font-weight: 600; color: var(--ink); background: #fff7d6; border-radius: 10px; padding: 8px; }
.buy-note .ic { width: 18px; height: 18px; }
.buybar { display: none; }

/* ---------- enrol ---------- */
.enrol-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 32px; align-items: start; }
.enrol { display: grid; gap: 22px; }
.enrol-step { margin: 0; min-width: 0; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: #fff; box-shadow: var(--shadow); }
.enrol-step legend { display: flex; align-items: center; gap: 12px; padding: 0; font-family: var(--font-head); font-weight: 700; font-size: 21px; color: var(--ink); float: left; width: 100%; margin-bottom: 18px; }
.enrol-step legend + * { clear: both; }
.enrol-step .step-n { margin: 0; width: 36px; height: 36px; font-size: 17px; }
.enrol-aside { position: sticky; top: calc(var(--hdr-h) + 20px); }
.enrol-aside .card { display: grid; gap: 16px; }
.enrol-aside h2 { margin: 0; }
.opt-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.opt { position: relative; display: block; cursor: pointer; }
.opt input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.opt-box { display: flex; flex-direction: column; gap: 3px; height: 100%; padding: 14px 16px 14px 46px; border: 1.5px solid var(--line); border-radius: 12px; background: #fff; transition: border-color .15s, background .15s; position: relative; }
.opt-box::before { content: ''; position: absolute; left: 16px; top: 17px; width: 18px; height: 18px; border-radius: 50%; border: 2px solid #b5bccb; background: #fff; }
.opt-box b { color: var(--ink); font-size: 16px; line-height: 1.35; font-family: var(--font-head); }
.opt-sub { font-size: 14.5px; color: var(--muted); }
.opt-sub s { color: #8a91a1; }
.opt:hover .opt-box { border-color: #a9b8ee; }
.opt input:checked + .opt-box { border-color: var(--blue); background: var(--blue-50); }
.opt input:checked + .opt-box::before { border-color: var(--blue); background: var(--blue); box-shadow: inset 0 0 0 3px #fff; }
.opt input:focus-visible + .opt-box { outline: 3px solid var(--yellow); outline-offset: 2px; }
.pay-amount { background: var(--ink); color: #fff; border-radius: 12px; padding: 14px 18px; margin-bottom: 16px; font-size: 17px; }
.pay-amount b { color: var(--yellow); font-family: var(--font-head); font-size: 22px; margin-left: 4px; }
.pay-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.pay-card { border: 1px solid var(--line); border-radius: 14px; padding: 16px; background: var(--surface); min-width: 0; }
.pay-card h3 { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 18px; margin-bottom: 12px; }
.pay-card h3 small { width: 100%; font: 600 13px var(--font-body); color: var(--muted); }
.pay-card--bkash h3 .ic { color: #e2136e; }
.pay-card--nagad h3 .ic { color: #ec1c24; }
.pay-card--bank h3 .ic { color: var(--blue); }
.pay-card--bank { grid-column: span 1; }
.pay-row { display: grid; grid-template-columns: 1fr auto; gap: 0 8px; align-items: center; padding: 8px 0; border-top: 1px dashed #d6dbe5; }
.pay-row:first-of-type { border-top: 0; }
.pay-k { grid-column: 1 / -1; font-size: 13px; color: var(--muted); }
.pay-v { font-family: ui-monospace, 'SFMono-Regular', Menlo, monospace; font-weight: 700; color: var(--ink); font-size: 15.5px; word-break: break-all; }
.copy-btn { display: inline-flex; align-items: center; gap: 4px; height: 32px; padding: 0 10px; border-radius: 8px; border: 1px solid var(--line); background: #fff; color: var(--blue); font: 600 13px var(--font-body); cursor: pointer; }
.copy-btn .ic { width: 15px; height: 15px; }
.copy-btn.copied { background: #dcfce7; color: #15803d; border-color: #bbf7d0; }
.pay-notes { margin: 16px 0 0; padding-left: 20px; color: var(--muted); font-size: 15.5px; display: grid; gap: 6px; }
.pay-notes b { color: var(--ink); }
.expat-note { display: none; }
.is-expat .expat-note { display: list-item; }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 20px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field > span { font-weight: 600; color: var(--ink); font-size: 15.5px; }
.field--full { grid-column: 1 / -1; }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; padding: 10px 14px; border: 1.5px solid #d3d8e2; border-radius: 10px; background: #fff; color: var(--ink); font: 16px var(--font-body); transition: border-color .15s, box-shadow .15s; }
.field textarea { resize: vertical; min-height: 96px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 4px rgba(31, 79, 224, .14); }
.field-err { display: none; color: var(--danger); font-size: 14px; font-style: normal; font-weight: 600; margin: 4px 0 0; }
.show-errors .field input:invalid, .show-errors .field select:invalid, .show-errors .field textarea:invalid { border-color: var(--danger); }
.show-errors .field input:invalid ~ .field-err, .show-errors .field select:invalid ~ .field-err, .show-errors .field textarea:invalid ~ .field-err { display: block; }
.field-err.is-on { display: block; }
.seg { display: flex; flex-wrap: wrap; gap: 10px; }
.seg label { position: relative; cursor: pointer; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg span { display: inline-flex; align-items: center; min-height: 44px; padding: 8px 20px; border: 1.5px solid #d3d8e2; border-radius: 999px; font-weight: 600; }
.seg input:checked + span { border-color: var(--blue); background: var(--blue); color: #fff; }
.seg input:focus-visible + span { outline: 3px solid var(--yellow); outline-offset: 2px; }
.check { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; font-size: 15.5px; }
.check input { width: 20px; height: 20px; margin: 3px 0 0; accent-color: var(--blue); flex: none; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-foot { text-align: center; color: var(--muted); font-size: 14.5px; margin: 12px 0 0; }

.success { text-align: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 28px; box-shadow: var(--shadow-lg); }
.success:focus { outline: none; }
.success-ic .ic { width: 72px; height: 72px; padding: 16px; margin: 0 auto 16px; border-radius: 50%; background: #dcfce7; color: #15803d; stroke-width: 3; }
.success p { color: var(--muted); max-width: 540px; margin-left: auto; margin-right: auto; }
.success-sum { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; text-align: left; max-width: 520px; margin: 22px auto 26px; padding: 18px 20px; background: var(--surface); border-radius: 12px; font-size: 15.5px; }
.success-sum dt { color: var(--muted); }
.success-sum dd { margin: 0; color: var(--ink); font-weight: 600; word-break: break-word; }

/* ---------- about ---------- */
.vm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.vm { border-radius: var(--radius); padding: 32px; border: 1px solid var(--line); }
.vm p { font-size: 17.5px; margin: 0; }
.vm--vision { background: var(--ink); color: #dfe2e8; border-color: var(--ink); }
.vm--vision h2 { color: #fff; }
.vm--mission { background: var(--blue-50); border-color: #d4def9; }
.vm-ic .ic { width: 48px; height: 48px; padding: 11px; border-radius: 14px; margin-bottom: 16px; background: var(--yellow); color: var(--ink); }
.team-note { display: flex; gap: 16px; align-items: flex-start; margin-top: 28px; padding: 22px; border: 1.5px dashed #c5cde0; border-radius: var(--radius); background: var(--surface); }
.team-note > .ic { width: 46px; height: 46px; padding: 11px; border-radius: 12px; background: #fff; color: var(--blue); }
.team-note p { margin: 0; color: var(--muted); }

/* ---------- guideline ---------- */
.g-grid { display: grid; grid-template-columns: minmax(0, 1fr) 420px; gap: 32px; align-items: start; }
.g-copy { display: grid; gap: 24px; }
.g-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.g-fact { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; padding: 20px; border-radius: var(--radius); background: var(--ink); color: #b7bcc8; }
.g-fact .ic { width: 38px; height: 38px; padding: 8px; border-radius: 10px; background: rgba(255, 255, 255, .08); color: var(--yellow); margin-bottom: 6px; }
.g-fact b { font-family: var(--font-head); font-size: 24px; color: #fff; line-height: 1.1; }
.g-fact span { font-size: 14.5px; }
.mini-steps { margin: 0; padding-left: 22px; display: grid; gap: 8px; }
.g-form { position: sticky; top: calc(var(--hdr-h) + 20px); display: grid; gap: 14px; }
.g-form h2 { margin-bottom: 4px; }
.form-done { display: flex; gap: 10px; align-items: flex-start; background: #dcfce7; color: #14532d; border-radius: 12px; padding: 14px; }
.form-done[hidden] { display: none; }
.form-done p { margin: 0; }
.form-done .ic { color: #15803d; stroke-width: 3; margin-top: 3px; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 28px; align-items: stretch; }
.contact-cards { display: grid; gap: 14px; }
.c-card { display: flex; gap: 14px; align-items: center; padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; color: var(--text); text-decoration: none; box-shadow: var(--shadow); }
a.c-card:hover { border-color: var(--blue); }
.c-card > .ic { width: 46px; height: 46px; padding: 11px; border-radius: 12px; background: var(--blue-50); color: var(--blue); }
.c-card--wa > .ic { background: var(--wa); color: #fff; }
.c-card--fb > .ic { background: #1877f2; color: #fff; }
.c-card b { display: block; color: var(--ink); font-family: var(--font-head); }
.c-card span { color: var(--muted); word-break: break-word; }
.map-wrap { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); min-height: 360px; background: var(--surface); }
.map-wrap iframe { width: 100%; height: 100%; min-height: 360px; border: 0; display: block; }
#contact-form .btn { margin-top: 4px; }

/* ---------- policy ---------- */
.policy section { padding: 22px 0; border-top: 1px solid var(--line); }
.policy h2 { font-size: 22px; }
.policy p { color: #3a4152; }
.policy strong { color: var(--ink); }
.policy-date { color: var(--muted); font-size: 14.5px; }
.policy .lede { font-size: 18px; }
.policy-contact { margin-top: 12px; padding: 18px 20px; background: var(--surface); border-radius: 12px; }
.policy-contact p { margin: 0; }

/* ---------- 404 ---------- */
.nf-code { font: 800 120px/1 var(--font-head); color: transparent; -webkit-text-stroke: 3px var(--ink); margin: 0 0 10px; }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: #b7bcc8; padding: 64px 0 0; font-size: 15.5px; }
.ft-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 36px; }
.ft-brand img { width: 140px; border-radius: 14px; margin-bottom: 14px; }
.site-footer h3 { color: #fff; font-size: 17px; margin-bottom: 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.site-footer a { color: #d6d9e0; text-decoration: none; }
.site-footer a:hover { color: var(--yellow); }
.ft-contact li, .ft-contact a { display: flex; gap: 10px; align-items: flex-start; }
.ft-contact .ic { width: 18px; height: 18px; margin-top: 4px; color: var(--yellow); }
.ft-bottom { margin-top: 48px; padding-top: 22px; padding-bottom: 24px; border-top: 1px solid rgba(255, 255, 255, .1); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 14px; }
.ft-bottom p { margin: 0; }
.disclaimer { max-width: 680px; color: #8f95a3; }

/* ---------- floating WhatsApp ---------- */
.wa-float { position: fixed; right: 18px; bottom: 18px; z-index: 60; display: inline-flex; align-items: center; gap: 10px; height: 58px; padding: 0 20px 0 16px; border-radius: 999px; background: var(--wa); color: #fff; text-decoration: none; font-family: var(--font-head); font-weight: 700; box-shadow: 0 10px 30px rgba(37, 211, 102, .45); transition: transform .2s; }
.wa-float:hover { transform: translateY(-2px) scale(1.02); }
.wa-float .ic { width: 28px; height: 28px; }
.wa-float::before { content: ''; position: absolute; inset: 0; border-radius: inherit; box-shadow: 0 0 0 0 rgba(37, 211, 102, .55); animation: wa-pulse 2.4s infinite; }
@keyframes wa-pulse { 0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, .5); } 70% { box-shadow: 0 0 0 16px rgba(37, 211, 102, 0); } 100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); } }
@media (prefers-reduced-motion: reduce) { .wa-float::before { animation: none; } html { scroll-behavior: auto; } .course-card, .btn { transition: none; } }

/* ---------- responsive ---------- */
@media (max-width: 1120px) {
  .nav a { padding: 8px 9px; font-size: 15px; }
  .hdr { gap: 14px; }
}
@media (max-width: 1024px) {
  .menu-btn { display: inline-flex; }
  .nav { position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 2px; padding: 12px 20px 20px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 20px 30px rgba(15, 23, 42, .08); display: none; }
  .nav-open .nav { display: flex; }
  .nav a { padding: 12px 14px; font-size: 17px; border-radius: 10px; }
  .nav .nav-cta { display: inline-flex; margin-top: 10px; color: #fff; }
  .hdr-actions { margin-left: auto; }
  .course-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .course-layout, .enrol-wrap, .g-grid { grid-template-columns: 1fr; }
  .course-aside, .enrol-aside, .g-form { position: static; }
  .course-aside { order: -1; }
  .course-main { display: contents; }
  .course-layout > .course-main > .banner { order: -2; }
  .ft-grid { grid-template-columns: 1fr 1fr; }
  .pay-grid { grid-template-columns: 1fr 1fr; }
  .pay-card--bank { grid-column: 1 / -1; }
}
@media (max-width: 860px) {
  .topbar .tb-addr { display: none; }
  .tb-fb span { display: none; }
  .hero-in { grid-template-columns: 1fr; gap: 36px; padding-top: 36px; padding-bottom: 56px; }
  .hero-art { width: min(100%, 380px); }
  .feat-grid { grid-template-columns: 1fr 1fr; }
  .usp-in { grid-template-columns: 1fr; }
  .usp-logo { display: none; }
  .founder { grid-template-columns: 1fr; gap: 36px; }
  .founder-photo { max-width: 340px; margin: 0 auto; width: 100%; }
  .founder--full .founder-photo { position: relative; top: 0; }
  .vm-grid, .contact-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .section--first { padding-top: 36px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .topbar-in { justify-content: center; gap: 16px; font-size: 13px; }
  .brand-txt small { display: none; }
  .brand-txt b { font-size: 19px; }
  .hdr-cta { display: none; }
  .lang-btn { padding: 0 12px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 17px; }
  .hero-btns .btn { flex: 1 1 auto; }
  .hero-btns .btn-wa { flex-basis: 100%; }
  .hb-1 { left: -2%; top: 10%; }
  .hb-2 { right: -2%; bottom: 8%; }
  .hero-badge { padding: 8px 10px; }
  .hero-badge .ic { width: 30px; height: 30px; padding: 6px; }
  .hero-badge b { font-size: 14.5px; }
  .hero-badge span { font-size: 12.5px; }
  .feat-grid { grid-template-columns: 1fr; gap: 18px; }
  .course-grid { grid-template-columns: 1fr; }
  .steps, .card .steps { grid-template-columns: 1fr; }
  .opt-grid, .form-grid, .pay-grid, .g-facts { grid-template-columns: 1fr; }
  .enrol-step, .card { padding: 20px 16px; }
  .banner--big { aspect-ratio: 16 / 10; padding: 20px; }
  .banner--big .b-tag { top: 16px; left: 18px; }
  .banner--big .b-stamp { top: 16px; right: 16px; }
  .chips { gap: 8px; }
  .chip { padding: 8px 16px; }
  .cta-in { flex-direction: column; align-items: flex-start; }
  .cta-btns, .cta-btns .btn { width: 100%; }
  .ft-grid { grid-template-columns: 1fr; gap: 28px; }
  .wa-float { width: 58px; padding: 0; justify-content: center; }
  .wa-float span { display: none; }
  .has-buybar .wa-float { bottom: 88px; }
  .buybar { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 55; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: #fff; border-top: 1px solid var(--line); box-shadow: 0 -10px 30px rgba(15, 23, 42, .1); }
  .buybar .price { margin: 0; }
  .buybar .p-now { font-size: 24px; }
  .buybar .p-tag { display: none; }
  .has-buybar .site-footer { padding-bottom: 76px; }
  .success-sum { grid-template-columns: 1fr; gap: 2px; }
  .success-sum dd { margin-bottom: 8px; }
}