/* Dr. A H M Masiur Rahman — Orthopedic & Spine Surgeon, Mirpur
   Layout: bone-white clinical pages, one surgical-navy band per page, the hotline number as the hero signature.
   Every color is a token; dark mode redefines tokens only. */

:root {
  --bg: #ffffff;
  --bg-alt: #F2F5F8;
  --surface: #ffffff;
  --ink: #0B2440;
  --text: #26405e;
  --muted: #55677d;
  --line: #D6DEE8;
  --brand: #1C4FB8;
  --brand-deep: #133a8a;
  --brand-soft: #E6EDFA;
  --link: #1C4FB8;
  --on-brand: #ffffff;
  --call: #0E9488;
  --call-deep: #0b766c;
  --call-soft: #DDF3F0;
  --band: #0B2440;
  --band-2: #0F2D52;
  --band-text: #c9d6e6;
  --band-muted: #9fb3cb;
  --band-accent: #5fd3c7;
  --amber-bg: #FFF3D6; --amber-fg: #6b4a00;
  --blue-bg: #E6EDFA; --blue-fg: #133a8a;
  --teal-bg: #DDF3F0; --teal-fg: #0b5c55;
  --slate-bg: #EDF0F4; --slate-fg: #3c4b5e;
  --shadow: 0 18px 40px -24px rgba(11, 36, 64, .35);
  --overlay: linear-gradient(180deg, rgba(4, 14, 28, 0) 35%, rgba(4, 14, 28, .78) 75%, rgba(4, 14, 28, .92) 100%);
  --fb: #1877F2;

  --display: 'Bricolage Grotesque', 'Figtree', system-ui, sans-serif;
  --body: 'Figtree', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --bangla: 'Hind Siliguri', 'Figtree', system-ui, sans-serif;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 26px;
  --wrap: 1200px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0A1626; --bg-alt: #0E1D31; --surface: #12243B;
    --ink: #EEF3FA; --text: #C5D2E3; --muted: #8DA0B8; --line: #23395A;
    --brand: #3E6FE0; --brand-deep: #2F5BC2; --brand-soft: #172F55; --link: #8CB0FF; --on-brand: #ffffff;
    --call: #14A596; --call-deep: #0f8c80; --call-soft: #0D3634;
    --band: #06101D; --band-2: #0B1A2E; --band-text: #c9d6e6; --band-muted: #93a7bf; --band-accent: #5fd3c7;
    --amber-bg: #3A2F14; --amber-fg: #F3D38C; --blue-bg: #172F55; --blue-fg: #B9CDF7;
    --teal-bg: #0D3634; --teal-fg: #9BE3DA; --slate-bg: #1B2B42; --slate-fg: #C0CCDC;
    --shadow: 0 18px 40px -24px rgba(0, 0, 0, .7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0A1626; --bg-alt: #0E1D31; --surface: #12243B;
  --ink: #EEF3FA; --text: #C5D2E3; --muted: #8DA0B8; --line: #23395A;
  --brand: #3E6FE0; --brand-deep: #2F5BC2; --brand-soft: #172F55; --link: #8CB0FF; --on-brand: #ffffff;
  --call: #14A596; --call-deep: #0f8c80; --call-soft: #0D3634;
  --band: #06101D; --band-2: #0B1A2E; --band-text: #c9d6e6; --band-muted: #93a7bf; --band-accent: #5fd3c7;
  --amber-bg: #3A2F14; --amber-fg: #F3D38C; --blue-bg: #172F55; --blue-fg: #B9CDF7;
  --teal-bg: #0D3634; --teal-fg: #9BE3DA; --slate-bg: #1B2B42; --slate-fg: #C0CCDC;
  --shadow: 0 18px 40px -24px rgba(0, 0, 0, .7);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--body); font-size: 1.0625rem; line-height: 1.65; color: var(--text); background: var(--bg); overflow-x: hidden; transition: background-color .25s, color .25s; }
.lang-bn body { font-family: var(--bangla); font-size: 1.08rem; line-height: 1.75; }
.lang-bn h1, .lang-bn h2, .lang-bn h3, .lang-bn h4, .lang-bn .brand-name, .lang-bn .day-name, .lang-bn .ch-t, .lang-bn .faq summary { font-family: var(--bangla); letter-spacing: 0; font-weight: 700; }
img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--link); outline-offset: 3px; border-radius: 4px; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-inline: 1.25rem; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip:focus { position: fixed; left: 1rem; top: 1rem; width: auto; height: auto; clip: auto; z-index: 100; background: var(--surface); padding: .6rem 1rem; border-radius: 8px; }

h1, h2, h3, h4 { font-family: var(--display); color: var(--ink); line-height: 1.14; letter-spacing: -0.015em; font-weight: 700; text-wrap: balance; }
h2 { font-size: clamp(1.85rem, 3.5vw, 2.7rem); }
h3 { font-size: 1.3rem; }
p + p { margin-top: .9rem; }
.lede { font-size: 1.18rem; color: var(--text); max-width: 62ch; margin-top: 1rem; }
.prose { max-width: 68ch; margin-top: 1rem; }
.muted { color: var(--muted); }
.mt { margin-top: 1.25rem; }
.mt-lg { margin-top: 2.75rem; }
.text-link { display: inline-flex; gap: .45rem; align-items: center; color: var(--link); font-weight: 700; }
.text-link:hover { text-decoration: underline; }
.inline-call { color: var(--link); font-weight: 700; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .6rem; padding: .85rem 1.4rem; border-radius: 999px; font-weight: 600; font-size: 1rem; border: 2px solid transparent; cursor: pointer; transition: background-color .2s, color .2s, border-color .2s, transform .2s; white-space: nowrap; }
.btn:active { transform: translateY(1px); }
.btn-call { background: var(--call); color: var(--on-brand); }
.btn-call:hover { background: var(--call-deep); }
.btn-brand { background: var(--brand); color: var(--on-brand); }
.btn-brand:hover { background: var(--brand-deep); }
.btn-line { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn-line:hover { border-color: var(--link); color: var(--link); }
.btn-ghost-light { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost-light:hover { background: rgba(255,255,255,.1); }
.btn-fb { background: var(--fb); color: #fff; }
.btn-fb:hover { filter: brightness(1.08); }
.btn-sm { padding: .55rem 1rem; font-size: .92rem; }
.btn[disabled] { opacity: .6; cursor: progress; }

/* Notice + hotline strip */
.notice-bar { background: var(--amber-bg); color: var(--amber-fg); font-weight: 600; font-size: .95rem; padding: .55rem 0; }
.hotline-strip { background: var(--band); color: var(--band-text); font-size: .92rem; }
.hotline-strip .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 42px; flex-wrap: wrap; }
.hotline-strip a { color: #fff; font-weight: 700; }
.hs-left, .hs-right { display: flex; gap: 1.25rem; flex-wrap: wrap; align-items: center; }
.hotline-strip i { color: var(--band-accent); margin-right: .4rem; }
.hs-icon i { margin: 0; color: #fff; }
.hs-icon { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: rgba(255,255,255,.1); }
.hs-icon:hover { background: rgba(255,255,255,.2); }

/* Header */
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 72px; }
.brand { display: flex; align-items: center; gap: .75rem; min-width: 0; flex-shrink: 0; }
.brand-mark { width: 42px; height: 42px; border-radius: 12px; background: var(--brand); color: #fff; display: grid; place-items: center; flex-shrink: 0; }
.brand-mark svg { width: 22px; height: 26px; }
.brand-name { font-family: var(--display); font-weight: 700; font-size: 1.12rem; color: var(--ink); line-height: 1.15; display: block; white-space: nowrap; }
.brand-role { font-size: .8rem; color: var(--muted); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav-links { display: flex; gap: .1rem; }
.nav-links a { padding: .45rem .7rem; border-radius: 999px; font-weight: 600; font-size: .95rem; color: var(--text); white-space: nowrap; }
.nav-links a:hover { background: var(--bg-alt); color: var(--ink); }
.nav-links a[aria-current="page"] { background: var(--brand-soft); color: var(--link); }
.nav-tools { display: flex; align-items: center; gap: .45rem; flex-shrink: 0; }
.tool-btn { height: 40px; min-width: 40px; padding: 0 .7rem; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); display: inline-grid; place-items: center; cursor: pointer; font-weight: 600; font-size: .92rem; }
.tool-btn:hover { border-color: var(--link); color: var(--link); }
.lang-btn { font-family: var(--bangla); }
.lang-bn .lang-btn { font-family: var(--body); }
.theme-btn .fa-sun { display: none; }
:root[data-theme="dark"] .theme-btn .fa-moon { display: none; }
:root[data-theme="dark"] .theme-btn .fa-sun { display: inline; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-btn .fa-moon { display: none; }
  :root:not([data-theme="light"]) .theme-btn .fa-sun { display: inline; }
}
.menu-btn { display: none; }
.mobile-menu { display: none; border-top: 1px solid var(--line); background: var(--bg); max-height: 70vh; overflow-y: auto; }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: .85rem 1.25rem; font-weight: 600; border-bottom: 1px solid var(--line); color: var(--ink); }
.mobile-menu a[aria-current="page"] { color: var(--link); }
.mobile-menu .mm-call { color: var(--call); }

/* Hero */
.hero { background: var(--bg-alt); position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 2.5rem; align-items: end; padding-top: 3.25rem; }
.hero-copy { padding-bottom: 3.25rem; min-width: 0; }
.hero-tag { display: inline-flex; align-items: center; gap: .5rem; background: var(--surface); border: 1px solid var(--line); padding: .35rem .85rem; border-radius: 999px; font-size: .92rem; font-weight: 600; color: var(--link); margin-bottom: 1.2rem; }
.hero h1 { font-size: clamp(2.3rem, 5.2vw, 4rem); font-weight: 800; letter-spacing: -0.025em; margin-bottom: .8rem; }
.lang-bn .hero h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); line-height: 1.25; }
.hero-quals { font-weight: 600; color: var(--ink); margin-bottom: .35rem; font-size: 1.1rem; }
.hero-post { color: var(--muted); margin-bottom: 1.8rem; max-width: 54ch; }

/* Hotline card — the page's signature */
.hotline-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 1.35rem 1.5rem; display: inline-flex; flex-direction: column; gap: .35rem; max-width: 100%; box-shadow: var(--shadow); }
.hotline-label { font-size: .95rem; color: var(--muted); font-weight: 500; }
.hotline-row { display: flex; align-items: center; gap: .75rem; }
.hotline-number { font-family: var(--display); font-weight: 800; font-size: clamp(2.2rem, 6vw, 3.8rem); line-height: 1; color: var(--ink); letter-spacing: -0.02em; display: inline-flex; align-items: center; gap: .85rem; }
.lang-bn .hotline-number { font-family: var(--bangla); font-weight: 700; letter-spacing: 0; }
.hotline-number .ring { width: .9em; height: .9em; border-radius: 50%; background: var(--call); color: #fff; display: grid; place-items: center; font-size: .42em; flex-shrink: 0; position: relative; }
.hotline-number .ring::after { content: ''; position: absolute; inset: -6px; border-radius: 50%; border: 2px solid var(--call); opacity: 0; animation: ring 2.4s ease-out 1s 3; }
@keyframes ring { 0% { transform: scale(.8); opacity: .7; } 100% { transform: scale(1.5); opacity: 0; } }
.hotline-number:hover { color: var(--call); }
.copy-btn { width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg-alt); color: var(--muted); cursor: pointer; display: grid; place-items: center; flex-shrink: 0; position: relative; }
.copy-btn:hover { color: var(--link); border-color: var(--link); }
.copy-btn.done { color: var(--call); border-color: var(--call); }
.copy-btn .tip { position: absolute; bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); font-size: .78rem; padding: .2rem .5rem; border-radius: 6px; white-space: nowrap; }
.hotline-alt { font-size: .95rem; color: var(--muted); }
.hotline-alt a { font-weight: 700; color: var(--ink); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.4rem; align-items: center; }

.hero-photo { position: relative; align-self: end; }
.hero-photo .panel { position: absolute; left: 8%; right: 0; bottom: 0; top: 14%; background: var(--brand); border-radius: var(--r-lg) var(--r-lg) 0 0; }
.hero-photo img { position: relative; width: 100%; max-width: 470px; margin-left: auto; border-radius: var(--r-lg) var(--r-lg) 0 0; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 20%; }
.hero-badge { position: absolute; left: 0; bottom: 2rem; background: var(--surface); color: var(--text); border-radius: var(--r-md); padding: .9rem 1.1rem; box-shadow: var(--shadow); font-size: .9rem; max-width: 230px; border: 1px solid var(--line); }
.hero-badge strong { display: block; font-family: var(--display); color: var(--ink); font-size: 1.05rem; }

/* Live status bar */
.status-bar { background: var(--band); color: var(--band-text); }
.status-bar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem 2rem; padding-block: 1rem; flex-wrap: wrap; }
.status { display: flex; align-items: center; gap: .7rem; font-size: 1.02rem; }
.status b { color: #fff; font-weight: 700; }
.status .dot { width: 11px; height: 11px; border-radius: 50%; background: var(--band-muted); flex-shrink: 0; }
.status-open .dot { background: #34d399; box-shadow: 0 0 0 0 rgba(52,211,153,.6); animation: pulse 2s infinite; }
.status-next .dot { background: #fbbf24; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(52,211,153,.55); } 70% { box-shadow: 0 0 0 10px rgba(52,211,153,0); } 100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); } }

/* Sections */
.section { padding-block: 5.25rem; }
.section.tint { background: var(--bg-alt); }
.section.dark, .section.band { background: var(--band); color: var(--band-text); }
.section.dark h2, .section.dark h3, .section.band h2, .section.band h3 { color: #fff; }
.sec-head { max-width: 760px; margin-bottom: 2.5rem; }
.sec-head p { margin-top: .85rem; color: var(--muted); font-size: 1.1rem; }
.section.dark .sec-head p, .section.band .sec-head p { color: var(--band-muted); }
.row-head { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: 1rem 2rem; flex-wrap: wrap; }
.row-head > div { max-width: 700px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; }
.split > * { min-width: 0; }
.split.top { align-items: start; }
.split.wide-left { grid-template-columns: 1.15fr .85fr; }
.photo-frame { border-radius: var(--r-lg); overflow: hidden; }
.photo-frame img { width: 100%; height: 100%; object-fit: cover; }
.photo-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.photo-pair .photo-frame:first-child { margin-top: 2.5rem; }
.check-list { display: grid; gap: .8rem; margin-top: 1.4rem; }
.check-list li { display: flex; gap: .75rem; align-items: flex-start; }
.check-list i { color: var(--call); margin-top: .35rem; width: 18px; text-align: center; flex-shrink: 0; }
.check-list b { color: var(--ink); }
.pills { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.25rem 0; }
.pill { display: inline-block; background: var(--brand-soft); color: var(--blue-fg); font-weight: 600; font-size: .9rem; padding: .35rem .8rem; border-radius: 999px; }

/* Symptom guide */
.guide { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 2rem; align-items: start; }
.guide-chips { display: grid; gap: .6rem; }
.chip { display: inline-flex; align-items: center; gap: .65rem; padding: .8rem 1.05rem; border-radius: 14px; border: 1.5px solid var(--line); background: var(--surface); color: var(--ink); font-weight: 600; cursor: pointer; text-align: left; transition: border-color .2s, background-color .2s; }
.chip i { color: var(--link); width: 20px; text-align: center; }
.chip:hover { border-color: var(--link); }
.chip[aria-selected="true"], .chip[aria-pressed="true"] { background: var(--brand); border-color: var(--brand); color: var(--on-brand); }
.chip[aria-selected="true"] i, .chip[aria-pressed="true"] i { color: var(--on-brand); }
.guide-panel { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 2rem 2.1rem; }
.guide-panel h3 { font-size: 1.6rem; }
.g-desc { color: var(--muted); margin-top: .5rem; }
.guide-panel dl { display: grid; gap: 1.1rem; margin-top: 1.4rem; }
.guide-panel dt { font-weight: 700; color: var(--ink); display: flex; align-items: center; gap: .55rem; }
.guide-panel dt i { color: var(--call); }
.guide-panel dd { margin-top: .25rem; }

/* Focus */
.focus-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.focus { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; display: grid; grid-template-rows: 240px auto; }
.focus img { width: 100%; height: 100%; object-fit: cover; }
.focus-body { padding: 1.6rem 1.8rem 1.9rem; }
.focus-body h3 { font-size: 1.45rem; margin-bottom: .5rem; }
.focus-body p { color: var(--muted); margin-bottom: 1rem; }

/* Gallery grid with dark overlay captions */
.g-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.g-home { grid-auto-rows: 230px; }
.g-home .g-wide { grid-column: span 2; grid-row: span 2; }
.g-page { grid-auto-rows: 260px; }
.g-item { position: relative; border-radius: var(--r-md); overflow: hidden; background: var(--band-2); min-height: 230px; }
.g-open { all: unset; display: block; width: 100%; height: 100%; cursor: zoom-in; position: relative; }
.g-open:focus-visible { outline: 3px solid var(--band-accent); outline-offset: -3px; }
.g-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease, filter .4s ease; }
.g-over { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end; gap: .2rem; padding: 1.1rem 1.2rem; color: #fff; background: var(--overlay); opacity: .92; transition: opacity .35s ease, background-color .35s ease; }
.g-over .g-cat { font-size: .8rem; font-weight: 600; color: var(--band-accent); }
.g-over .g-title { font-family: var(--display); font-weight: 700; font-size: 1.15rem; line-height: 1.25; }
.lang-bn .g-over .g-title { font-family: var(--bangla); }
.g-over .g-cap { font-size: .92rem; color: #dbe5f1; max-height: 0; opacity: 0; overflow: hidden; transition: max-height .35s ease, opacity .35s ease; }
.g-zoom { position: absolute; top: 1rem; right: 1rem; width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,.16); display: grid; place-items: center; opacity: 0; transition: opacity .3s; font-size: .9rem; }
.g-item:hover img, .g-open:focus-visible img { transform: scale(1.06); filter: brightness(.85); }
.g-item:hover .g-over, .g-open:focus-visible .g-over { background-color: rgba(4, 14, 28, .45); opacity: 1; }
.g-item:hover .g-cap, .g-open:focus-visible .g-cap { max-height: 6em; opacity: 1; }
.g-item:hover .g-zoom, .g-open:focus-visible .g-zoom { opacity: 1; }
@media (hover: none) { .g-over .g-cap { max-height: 6em; opacity: 1; } }

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(3, 9, 18, .94); display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1rem; padding: 1.5rem; }
.lb-fig { display: grid; justify-items: center; gap: .9rem; min-width: 0; max-height: 100%; }
.lb-fig img { max-height: 78vh; max-width: 100%; width: auto; border-radius: 10px; object-fit: contain; }
.lb-fig figcaption { color: #dbe5f1; text-align: center; display: grid; gap: .2rem; max-width: 70ch; }
.lb-title { color: #fff; font-size: 1.15rem; }
.lb-count { font-size: .85rem; color: #93a7bf; }
.lb-nav, .lb-close { width: 48px; height: 48px; border-radius: 50%; border: 0; background: rgba(255,255,255,.12); color: #fff; cursor: pointer; display: grid; place-items: center; font-size: 1.1rem; }
.lb-nav:hover, .lb-close:hover { background: rgba(255,255,255,.24); }
.lb-close { position: absolute; top: 1rem; right: 1rem; }

/* Filters */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.filters .chip { padding: .55rem 1rem; border-radius: 999px; }
.count { font-size: .8rem; opacity: .75; margin-left: .2rem; }
.empty { color: var(--muted); padding: 2rem 0; }
.empty-state { text-align: center; max-width: 560px; margin: 0 auto; padding: 3rem 0; display: grid; justify-items: center; gap: 1rem; }
.empty-state > i { font-size: 3rem; color: var(--link); }

/* Conditions */
.conditions { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.cond { display: grid; grid-template-columns: 52px 1fr; gap: 1rem; padding: 1.5rem 1.5rem 1.5rem 0; border-bottom: 1px solid var(--line); }
.cond:nth-child(odd) { border-right: 1px solid var(--line); }
.cond:nth-child(even) { padding-left: 1.5rem; }
.cond-icon { width: 52px; height: 52px; border-radius: 14px; background: var(--brand-soft); color: var(--link); display: grid; place-items: center; font-size: 1.25rem; }
.cond h3 { font-size: 1.15rem; margin-bottom: .3rem; }
.cond p { color: var(--muted); font-size: .98rem; }

/* Facts */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.12); border-radius: var(--r-md); overflow: hidden; }
.fact { background: var(--band); padding: 1.8rem 1.4rem; }
.fact b { display: block; font-family: var(--display); font-size: clamp(2.2rem, 4vw, 3rem); color: #fff; font-weight: 700; line-height: 1; margin-bottom: .5rem; }
.lang-bn .fact b { font-family: var(--bangla); }
.fact span { color: var(--band-muted); font-size: .98rem; }

/* Videos */
.videos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.video { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; display: flex; flex-direction: column; }
.yt { position: relative; aspect-ratio: 16 / 9; background: #000; overflow: hidden; }
.yt img { width: 100%; height: 100%; object-fit: cover; }
.yt iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.yt-play { position: absolute; inset: 0; margin: auto; width: 68px; height: 48px; border-radius: 14px; border: 0; background: #FF0033; color: #fff; font-size: 1.2rem; cursor: pointer; box-shadow: 0 8px 24px rgba(0,0,0,.35); transition: transform .2s; }
.yt:hover .yt-play { transform: scale(1.08); }
.video-body { padding: 1.1rem 1.25rem 1.3rem; display: grid; gap: .4rem; }
.video-body h3 { font-size: 1.1rem; }
.v-topic { font-size: .82rem; font-weight: 600; color: var(--call); }

/* Weekly schedule */
.week { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: .5rem; }
.day { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); padding: .9rem .7rem; min-height: 180px; display: flex; flex-direction: column; gap: .5rem; }
.day.is-today { border: 2px solid var(--call); box-shadow: 0 10px 24px -16px var(--call); }
.day-name { font-family: var(--display); font-weight: 700; color: var(--ink); display: flex; justify-content: space-between; align-items: baseline; gap: .3rem; }
.day-name small { font-family: var(--body); font-size: .74rem; color: var(--call); font-weight: 700; }
.slot { border-radius: 10px; padding: .5rem .6rem; font-size: .84rem; line-height: 1.35; }
.slot b { display: block; font-size: .86rem; }
.slot-amber { background: var(--amber-bg); color: var(--amber-fg); }
.slot-blue { background: var(--blue-bg); color: var(--blue-fg); }
.slot-teal { background: var(--teal-bg); color: var(--teal-fg); }
.slot-slate { background: var(--slate-bg); color: var(--slate-fg); }
.slot-empty { color: var(--muted); text-align: center; }
.legend { display: flex; flex-wrap: wrap; gap: .8rem 1.5rem; margin-top: 1.2rem; font-size: .95rem; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: .5rem; }
.sw { width: 14px; height: 14px; border-radius: 4px; display: inline-block; }
.sw-amber { background: var(--amber-bg); border: 1px solid var(--amber-fg); }
.sw-blue { background: var(--blue-bg); border: 1px solid var(--blue-fg); }
.sw-teal { background: var(--teal-bg); border: 1px solid var(--teal-fg); }
.sw-slate { background: var(--slate-bg); border: 1px solid var(--slate-fg); }

/* Chambers + map */
.chambers { display: grid; grid-template-columns: 370px 1fr; border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; background: var(--surface); }
.ch-list { border-right: 1px solid var(--line); }
.ch-tab { display: block; width: 100%; text-align: left; background: var(--surface); border: 0; border-bottom: 1px solid var(--line); padding: 1.15rem 1.4rem; cursor: pointer; position: relative; color: var(--text); }
.ch-tab:last-child { border-bottom: 0; }
.ch-tab:hover, .ch-tab[aria-selected="true"] { background: var(--bg-alt); }
.ch-tab[aria-selected="true"]::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--brand); }
.ch-n { font-size: .85rem; color: var(--muted); }
.ch-t { display: block; font-family: var(--display); font-weight: 700; color: var(--ink); font-size: 1.08rem; margin: .15rem 0; }
.ch-w { font-size: .9rem; }
.ch-maps { min-width: 0; }
.ch-panel { display: none; height: 100%; grid-template-rows: 1fr auto; }
.ch-panel.active { display: grid; }
.ch-panel iframe { width: 100%; height: 100%; min-height: 340px; border: 0; display: block; background: var(--bg-alt); }
.ch-info { padding: 1.3rem 1.5rem; display: flex; justify-content: space-between; gap: 1rem 2rem; flex-wrap: wrap; align-items: center; border-top: 1px solid var(--line); }
.ch-info address { font-style: normal; max-width: 48ch; }
.ch-info b { color: var(--ink); }
.ch-info address a { color: var(--link); font-weight: 700; }
.ch-act { display: flex; gap: .6rem; flex-wrap: wrap; }

.ch-card { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; background: var(--surface); margin-bottom: 2rem; scroll-margin-top: 110px; }
.ch-card-body { padding: 2rem 2.2rem; min-width: 0; }
.ch-card-body h2 { font-size: 1.8rem; margin: .5rem 0 .75rem; }
.ch-meta { display: grid; gap: .85rem; margin: 1.2rem 0 .5rem; }
.ch-meta > div { display: grid; grid-template-columns: 24px 1fr; gap: .6rem; }
.ch-meta i { color: var(--link); margin-top: .35rem; }
.ch-meta b { color: var(--ink); }
.ch-card-media { display: grid; grid-template-rows: auto 1fr; background: var(--bg-alt); min-width: 0; }
.ch-card-media img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.ch-card-media iframe { width: 100%; min-height: 280px; height: 100%; border: 0; display: block; }
.note { background: var(--brand-soft); border-radius: var(--r-md); padding: 1rem 1.2rem; color: var(--blue-fg); font-size: .97rem; }

/* Facebook */
.fb-box { display: grid; grid-template-columns: 1fr minmax(0, 500px); gap: 3rem; align-items: center; background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 2.5rem; }
.fb-icon { width: 54px; height: 54px; border-radius: 16px; background: var(--fb); color: #fff; display: grid; place-items: center; font-size: 1.4rem; margin-bottom: 1rem; }
.fb-copy p { color: var(--muted); margin: .8rem 0 1.4rem; max-width: 46ch; }
.fb-frame { background: var(--surface); border-radius: var(--r-md); overflow: hidden; min-height: 420px; border: 1px solid var(--line); }
.fb-frame iframe { width: 100%; height: 560px; border: 0; display: block; }

/* Members */
.members { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: .75rem; }
.member { display: flex; gap: .85rem; align-items: center; padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface); font-weight: 600; color: var(--ink); font-size: .98rem; }
.member i { color: var(--link); font-size: 1.15rem; width: 22px; text-align: center; }

/* FAQ */
.faq { max-width: 860px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 1.3rem 2.5rem 1.3rem 0; font-family: var(--display); font-weight: 700; font-size: 1.18rem; color: var(--ink); position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: .25rem; top: 1.05rem; font-size: 1.6rem; color: var(--link); font-weight: 500; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .ans { padding: 0 0 1.5rem; max-width: 70ch; }
.faq-layout { grid-template-columns: 1.4fr .6fr; }
.sticky-aside { position: sticky; top: 110px; }

/* CTA band */
.cta-band { background: var(--brand); color: #dfe8fb; padding-block: 3.25rem; }
.cta-band .wrap { display: flex; justify-content: space-between; align-items: center; gap: 2rem; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); max-width: 24ch; }
.big-num { font-family: var(--display); font-weight: 800; font-size: clamp(2rem, 5vw, 3.1rem); color: #fff; display: inline-flex; align-items: center; gap: .75rem; }
.lang-bn .big-num { font-family: var(--bangla); font-weight: 700; }
.big-num i { font-size: .55em; background: #fff; color: var(--brand); width: 1.7em; height: 1.7em; border-radius: 50%; display: grid; place-items: center; }

/* Form */
.book { display: grid; grid-template-columns: .9fr 1.1fr; gap: 3rem; align-items: start; }
.book > * { min-width: 0; }
.contact-list { margin-top: 2rem; gap: 1.2rem; }
.form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 2rem; display: grid; gap: 1rem; }
.form h3 { font-size: 1.45rem; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { display: grid; gap: .35rem; min-width: 0; }
.field label { font-weight: 600; color: var(--ink); font-size: .95rem; }
.field input, .field select, .field textarea { width: 100%; padding: .8rem .95rem; border: 1.5px solid var(--line); border-radius: 12px; background: var(--bg); color: var(--ink); font-size: 1rem; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--link); box-shadow: 0 0 0 3px var(--brand-soft); }
.field input[aria-invalid="true"] { border-color: #dc2626; }
.form-hint { font-size: .92rem; color: var(--muted); }
.form-msg:empty { display: none; }
.form-msg { border-radius: 12px; padding: .9rem 1rem; font-weight: 600; display: grid; gap: .7rem; justify-items: start; }
.form-msg.ok { background: var(--call-soft); color: var(--teal-fg); }
.form-msg.err { background: color-mix(in srgb, #dc2626 14%, var(--surface)); color: color-mix(in srgb, #dc2626 70%, var(--ink)); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Page head */
.page-head { background: var(--bg-alt); padding-block: 3.25rem 2.75rem; border-bottom: 1px solid var(--line); }
.crumbs { font-size: .92rem; color: var(--muted); margin-bottom: .75rem; }
.crumbs a { color: var(--link); font-weight: 600; }
.page-head h1 { font-size: clamp(2rem, 4.4vw, 3.1rem); font-weight: 800; max-width: 24ch; }
.page-head p { margin-top: .9rem; max-width: 62ch; color: var(--muted); font-size: 1.12rem; }

/* Timeline (education is a real sequence) */
.timeline { border-left: 2px solid var(--line); padding-left: 1.5rem; display: grid; gap: 1.5rem; margin-top: 2rem; }
.timeline li { position: relative; }
.timeline li::before { content: ''; position: absolute; left: calc(-1.5rem - 7px); top: .45rem; width: 12px; height: 12px; border-radius: 50%; background: var(--brand); border: 2px solid var(--bg-alt); box-shadow: 0 0 0 2px var(--brand); }
.timeline .yr { font-family: var(--display); font-weight: 700; color: var(--link); }
.timeline h3 { font-size: 1.12rem; margin: .1rem 0 .2rem; }
.timeline p { color: var(--muted); font-size: .98rem; }
.pubs { display: grid; gap: 1rem; }
.pub { border: 1px solid var(--line); border-radius: var(--r-md); padding: 1.25rem 1.4rem; background: var(--surface); }
.pub h3 { font-size: 1.06rem; font-family: var(--body); font-weight: 700; line-height: 1.45; }
.pub p { color: var(--muted); font-size: .95rem; margin-top: .25rem; }

/* Treatments page */
.jump { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2.5rem; }
.jump a { display: inline-flex; gap: .5rem; align-items: center; padding: .5rem .9rem; border-radius: 999px; border: 1px solid var(--line); font-weight: 600; font-size: .93rem; color: var(--ink); background: var(--surface); }
.jump a:hover { border-color: var(--link); color: var(--link); }
.jump i { color: var(--link); }
.svc { display: grid; grid-template-columns: 280px 1fr; gap: 2.5rem; padding-block: 2.5rem; border-top: 1px solid var(--line); scroll-margin-top: 110px; }
.svc h2 { font-size: 1.6rem; }
.svc-icon { width: 56px; height: 56px; border-radius: 16px; background: var(--brand); color: #fff; display: grid; place-items: center; font-size: 1.35rem; margin-bottom: 1rem; }
.svc .lede { margin-top: 0; }
.dots { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem 1.5rem; margin-top: 1rem; }
.dots li { padding-left: 1.1rem; position: relative; }
.dots li::before { content: ''; position: absolute; left: 0; top: .7em; width: 6px; height: 6px; border-radius: 50%; background: var(--call); }

/* Footer */
.footer { background: var(--band); color: var(--band-muted); padding-block: 4rem 2rem; font-size: .97rem; }
.footer h4 { color: #fff; font-size: 1.05rem; margin-bottom: 1rem; }
.foot-grid { display: grid; grid-template-columns: 1.3fr .7fr 1.2fr 1fr; gap: 2.5rem; }
.footer a:hover { color: #fff; }
.brand-light .brand-name { color: #fff; }
.brand-light .brand-role { color: var(--band-muted); }
.foot-about { margin-top: 1rem; }
.foot-social { display: flex; gap: .5rem; margin-top: 1.2rem; }
.foot-social a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,.08); color: #fff; display: grid; place-items: center; }
.foot-social a:hover { background: rgba(255,255,255,.18); }
.f-links li { margin-bottom: .45rem; }
.f-ch { margin-bottom: .9rem; }
.f-ch b { color: #fff; display: block; font-weight: 600; }
.f-num { font-family: var(--display); font-size: 1.6rem; color: #fff; font-weight: 700; display: inline-block; margin: .2rem 0 .6rem; }
.lang-bn .f-num { font-family: var(--bangla); }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 3rem; padding-top: 1.5rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; font-size: .9rem; }
.foot-bottom a { color: var(--band-accent); font-weight: 600; }

/* Floating actions */
.float-call { position: fixed; right: 18px; bottom: calc(18px + env(safe-area-inset-bottom, 0px)); z-index: 60; display: flex; flex-direction: column; gap: 10px; align-items: center; }
.float-call a, .float-call button { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-size: 1.35rem; box-shadow: 0 10px 24px -8px rgba(0,0,0,.5); border: 0; cursor: pointer; }
.fc-call { background: var(--call); }
.fc-wa { background: #25D366; }
.float-call .fc-top { width: 44px; height: 44px; font-size: 1rem; background: var(--ink); color: var(--bg); }
.mobile-callbar { display: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Responsive */
.name-short { display: none; }
@media (max-width: 1440px) {
  .nav-links a { padding: .45rem .5rem; font-size: .92rem; }
  .brand-role { max-width: 230px; }
  .nav-call span.lbl { display: none; }
}
@media (max-width: 1240px) {
  .nav-links { display: none; }
  .menu-btn { display: inline-grid; }
}
@media (max-width: 1080px) {
  .week { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .chambers { grid-template-columns: 1fr; }
  .ch-list { border-right: 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; }
  .ch-tab { border-right: 1px solid var(--line); }
  .videos { grid-template-columns: 1fr 1fr; }
  .fb-box { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .hero-grid, .split, .split.wide-left, .book, .ch-card, .svc, .guide, .faq-layout { grid-template-columns: 1fr; }
  .hero-grid { padding-top: 2rem; gap: 0; }
  .hero-copy { padding-bottom: 2rem; }
  .hero-photo img { max-width: 360px; margin: 0 auto; }
  .hero-photo .panel { left: 10%; right: 10%; }
  .hero-badge { left: .5rem; bottom: 1rem; }
  .focus-grid { grid-template-columns: 1fr; }
  .conditions { grid-template-columns: 1fr; }
  .cond:nth-child(odd) { border-right: 0; }
  .cond:nth-child(even) { padding-left: 0; }
  .facts { grid-template-columns: 1fr 1fr; }
  .section { padding-block: 3.75rem; }
  .g-grid { grid-template-columns: 1fr 1fr; }
  .g-home .g-wide { grid-column: span 2; grid-row: span 1; }
  .svc { gap: 1rem; }
  .guide-chips { grid-template-columns: 1fr 1fr; }
  .sticky-aside { position: static; }
  .nav-call { display: none; }
}
@media (max-width: 400px) {
  .copy-btn { display: none; }
  .hotline-number { font-size: 2rem; }
}
@media (max-width: 640px) {
  body { font-size: 1rem; }
  .hotline-strip .hs-hide { display: none; }
  .brand-name { font-size: 1rem; }
  .brand { flex-shrink: 1; gap: .55rem; }
  .brand > span:last-child { min-width: 0; }
  .nav { gap: .5rem; }
  .name-full { display: none; }
  .name-short { display: inline; }
  .hotline-number { font-size: 2.15rem; white-space: nowrap; gap: .6rem; }
  .status { align-items: flex-start; }
  .status .dot { margin-top: .5rem; }
  .brand-role { font-size: .72rem; max-width: 46vw; }
  .brand-mark { width: 38px; height: 38px; }
  .tool-btn { height: 38px; min-width: 38px; padding: 0 .55rem; }
  .week { grid-template-columns: 1fr 1fr; }
  .day { min-height: 0; }
  .ch-list { grid-template-columns: 1fr; }
  .ch-tab { border-right: 0; }
  .form .row { grid-template-columns: 1fr; }
  .dots { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .photo-pair .photo-frame:first-child { margin-top: 1.5rem; }
  .hotline-card { padding: 1.1rem 1.15rem; width: 100%; }
  .g-grid { grid-template-columns: 1fr; }
  .g-home, .g-page { grid-auto-rows: 240px; }
  .g-home .g-wide { grid-column: auto; }
  .videos { grid-template-columns: 1fr; }
  .guide-chips { grid-template-columns: 1fr; }
  .guide-panel { padding: 1.4rem; }
  .fb-box { padding: 1.4rem; }
  .lightbox { grid-template-columns: 1fr; padding: 4rem .75rem 1rem; }
  .lb-nav { position: absolute; bottom: 1rem; }
  .lb-prev { left: 1rem; } .lb-next { right: 1rem; }
  .float-call a { display: none; }
  .float-call { bottom: calc(76px + env(safe-area-inset-bottom, 0px)); }
  .mobile-callbar { display: grid; grid-template-columns: 1.4fr 1fr; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; box-shadow: 0 -6px 20px -10px rgba(0,0,0,.4); padding-bottom: env(safe-area-inset-bottom, 0px); background: var(--call); }
  .mobile-callbar a { padding: .95rem .5rem; text-align: center; font-weight: 700; color: #fff; display: flex; justify-content: center; align-items: center; gap: .5rem; }
  .mobile-callbar .mc-call { background: var(--call); }
  .mobile-callbar .mc-wa { background: var(--band); }
  .footer { padding-bottom: 6rem; }
}
.check-list li > span { min-width: 0; overflow-wrap: anywhere; }
@media (max-width: 340px) { .hotline-number { font-size: 1.75rem; } }