/* britsino-online.org.uk — midnight / copper-gold / violet theme */
:root {
  --bg: #070918;
  --bg-2: #0c1030;
  --surface: #11173d;
  --surface-2: #182052;
  --line: rgba(150, 165, 255, .16);
  --line-2: rgba(150, 165, 255, .28);
  --ink: #eef1ff;
  --ink-2: rgba(226, 231, 255, .80);
  --ink-3: rgba(226, 231, 255, .56);
  --gold: #ffc14d;
  --gold-2: #ff8f3d;
  --violet: #8b5cf6;
  --violet-2: #b99bff;
  --teal: #2fe3c6;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 22px;
  --shadow: 0 24px 60px -28px rgba(0, 0, 0, .85);
  --glow-gold: 0 0 0 1px rgba(255, 193, 77, .45), 0 14px 40px -14px rgba(255, 143, 61, .6);
  --hdr-h: 74px;
  --font: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-head: "Sora", "Manrope", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh;
  font-family: var(--font); font-size: 17px; line-height: 1.72; color: var(--ink);
  background:
    radial-gradient(1100px 520px at 12% -8%, rgba(139, 92, 246, .22), transparent 62%),
    radial-gradient(900px 480px at 100% 12%, rgba(255, 143, 61, .10), transparent 60%),
    radial-gradient(800px 420px at 40% 105%, rgba(47, 227, 198, .08), transparent 60%),
    var(--bg);
  background-attachment: fixed;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--gold); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--teal); }
:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 6px; }
::selection { background: rgba(139, 92, 246, .45); color: #fff; }

.wrap { width: 100%; margin: 0; padding: 0 30px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 24px; border-radius: 12px;
  font: 800 15px/1 var(--font); letter-spacing: .02em; text-decoration: none;
  border: 0; cursor: pointer; white-space: nowrap;
  transition: transform .15s ease, box-shadow .2s ease, filter .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--go { color: #1c0d00; background: linear-gradient(135deg, var(--gold) 0%, var(--gold-2) 100%); box-shadow: 0 12px 30px -12px rgba(255, 143, 61, .85), inset 0 1px 0 rgba(255, 255, 255, .45); }
.btn--go:hover { color: #1c0d00; filter: brightness(1.06); box-shadow: 0 16px 36px -12px rgba(255, 143, 61, 1), inset 0 1px 0 rgba(255, 255, 255, .5); }
.btn--ghost { color: var(--ink); background: rgba(255, 255, 255, .05); box-shadow: inset 0 0 0 1px var(--line-2); }

/* header */
.hdr {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 9, 24, .82);
  backdrop-filter: blur(16px) saturate(140%); -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow: 0 1px 0 var(--line);
}
.hdr::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: linear-gradient(90deg, transparent, rgba(255, 193, 77, .55), rgba(139, 92, 246, .55), transparent); }
.hdr__in { display: flex; align-items: center; gap: 24px; height: var(--hdr-h); }
.hdr__logo { flex: none; display: block; }
.hdr__logo img { width: 150px; height: auto; }
.hdr__nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.hdr__nav a { position: relative; padding: 10px 14px; border-radius: 10px; color: var(--ink-2); font: 700 15px/1 var(--font); text-decoration: none; transition: color .15s ease, background .15s ease; }
.hdr__nav a:hover { color: #fff; background: rgba(255, 255, 255, .05); }
.hdr__nav a.is-active { color: var(--gold); }
.hdr__nav a.is-active::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--gold), var(--gold-2)); }
.hdr__cta { flex: none; }
.hdr__burger { display: none; }
.nav-toggle { position: absolute; opacity: 0; pointer-events: none; }

/* breadcrumbs */
.crumbs { margin: 20px 0 14px; font-size: 14px; color: var(--ink-3); }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; }
.crumbs li + li::before { content: "/"; margin-right: 6px; color: var(--ink-3); }
.crumbs a { color: var(--ink-2); text-decoration: none; }
.crumbs a:hover { color: var(--gold); }

/* hero */
.hero { position: relative; margin-top: 22px; }
.hero__track { display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; border-radius: var(--r-lg); }
.hero__track::-webkit-scrollbar { display: none; }
.hero__slide { text-decoration: none; color: inherit; position: relative; flex: 0 0 100%; scroll-snap-align: start; border-radius: var(--r-lg); overflow: hidden; background: var(--bg-2); box-shadow: var(--shadow), inset 0 0 0 1px var(--line); }
.hero__slide img { width: 100%; height: clamp(300px, 25vw, 420px); object-fit: cover; object-position: left center; }
.hero__slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(270deg, rgba(7, 9, 24, .78) 0%, rgba(7, 9, 24, .35) 34%, transparent 55%); pointer-events: none; }
.hero__copy { position: absolute; z-index: 1; top: 50%; right: 40px; transform: translateY(-50%); width: min(380px, 36%); display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.hero__kicker { margin: 0; padding: 6px 10px; border-radius: 8px; font: 800 12px/1 var(--font); letter-spacing: .16em; text-transform: uppercase; color: var(--teal); background: rgba(47, 227, 198, .1); box-shadow: inset 0 0 0 1px rgba(47, 227, 198, .35); }
.hero__line { margin: 0; font: 800 clamp(24px, 2.6vw, 36px)/1.14 var(--font-head); color: #fff; text-shadow: 0 4px 24px rgba(0, 0, 0, .65); }
.hero__line em { font-style: normal; color: var(--gold); }
.hero__note { margin: 0; font-size: 12px; line-height: 1.4; color: var(--ink-3); }
.hero__dots { display: flex; justify-content: center; gap: 8px; margin-top: 14px; }
.hero__dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 3px; background: rgba(255, 255, 255, .22); cursor: pointer; transition: width .2s ease, background .2s ease; }
.hero__dot.is-on { width: 30px; background: linear-gradient(90deg, var(--gold), var(--gold-2)); }

/* feature cards */
.adv { margin: 30px 0 8px; }
.adv__list { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(280px, 1fr); gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 10px; scrollbar-width: thin; scrollbar-color: var(--violet) transparent; }
.adv__card { position: relative; scroll-snap-align: start; border-radius: var(--r-md); overflow: hidden; text-decoration: none; color: var(--ink); background: var(--surface); box-shadow: inset 0 0 0 1px var(--line); aspect-ratio: 560 / 304; transition: transform .2s ease, box-shadow .2s ease; }
.adv__card:hover { transform: translateY(-4px); box-shadow: var(--glow-gold); color: var(--ink); }
.adv__card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.adv__card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7, 9, 24, .9) 0%, rgba(7, 9, 24, .55) 42%, transparent 68%); }
.adv__txt { position: absolute; z-index: 1; left: 18px; top: 50%; transform: translateY(-50%); width: 48%; }
.adv__t { display: block; font: 800 18px/1.2 var(--font-head); }
.adv__s { display: block; margin-top: 6px; font-size: 13px; line-height: 1.45; color: var(--ink-2); }

/* inner banner */
.banner { margin: 4px 0 0; border-radius: var(--r-lg); overflow: hidden; background: var(--bg-2); box-shadow: var(--shadow), inset 0 0 0 1px var(--line); }
.banner img { width: 100%; height: clamp(180px, 22vw, 340px); object-fit: cover; object-position: center; }

/* article */
.article {
  position: relative; margin: 28px 0 60px; padding: 46px clamp(22px, 4vw, 64px);
  border-radius: var(--r-lg); background: linear-gradient(180deg, rgba(24, 32, 82, .72), rgba(12, 16, 48, .78));
  box-shadow: inset 0 0 0 1px var(--line), var(--shadow);
}
.article::before { content: ""; position: absolute; left: 32px; right: 32px; top: 0; height: 2px; border-radius: 2px; background: linear-gradient(90deg, transparent, var(--gold), var(--violet), transparent); }
.article h1 { margin: 0 0 22px; font: 800 clamp(30px, 4vw, 46px)/1.1 var(--font-head); background: linear-gradient(90deg, #fff 0%, #ffe3a8 45%, var(--gold) 70%, var(--gold-2) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.article h2 { position: relative; margin: 48px 0 16px; padding-bottom: 12px; font: 700 clamp(22px, 2.4vw, 29px)/1.25 var(--font-head); color: #fff; }
.article h2::after { content: ""; position: absolute; left: 0; bottom: 0; width: 64px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--gold), var(--violet)); }
.article h3 { margin: 28px 0 10px; font: 700 20px/1.3 var(--font-head); color: var(--violet-2); }
.article p { margin: 0 0 16px; color: var(--ink-2); }
.article strong { color: var(--ink); }
.article ul, .article ol { margin: 0 0 18px; padding-left: 0; list-style: none; color: var(--ink-2); }
.article li { position: relative; margin: 0 0 10px; padding-left: 32px; }
.article ul li::before { content: ""; position: absolute; left: 7px; top: .66em; width: 9px; height: 9px; transform: rotate(45deg); border-radius: 2px; background: linear-gradient(135deg, var(--gold), var(--gold-2)); }
.article ol { counter-reset: n; }
.article ol li { counter-increment: n; }
.article ol li::before { content: counter(n); position: absolute; left: 0; top: .2em; width: 23px; height: 23px; border-radius: 7px; display: grid; place-items: center; font: 800 12px/1 var(--font); color: #fff; background: linear-gradient(135deg, var(--violet), #5b3bd6); box-shadow: 0 0 0 1px rgba(185, 155, 255, .45); }
.article figure { margin: 26px 0; }
.article figure img { width: 100%; border-radius: var(--r-md); }
.fig--strip { clear: both; }
.fig--strip a { display: block; border-radius: var(--r-md); overflow: hidden; box-shadow: inset 0 0 0 1px var(--line); transition: box-shadow .2s ease; }
.fig--strip a:hover { box-shadow: var(--glow-gold); }

.shot { float: left; width: 48%; margin: 6px 30px 10px 0 !important; }
.shot img { display: block; width: 100%; height: auto; border-radius: var(--r-md); box-shadow: 0 0 0 1px var(--line-2), var(--shadow); background: #000; }
.article h2, .article h3, .article li { display: flow-root; }
.article .faq, .article .cta-box, .article .fig--strip, .article .tbl, .article .trust { clear: both; }
.doc-pic { border-radius: var(--r-md); margin: 6px 0 26px; width: 100%; box-shadow: inset 0 0 0 1px var(--line); }

/* tables */
.tbl { margin: 8px 0 22px; overflow-x: auto; border-radius: var(--r-md); box-shadow: inset 0 0 0 1px var(--line-2); background: rgba(7, 9, 24, .35); }
.tbl table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 520px; }
.tbl th, .tbl td { padding: 12px 16px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.tbl th { font-weight: 800; color: #fff; background: linear-gradient(90deg, rgba(139, 92, 246, .32), rgba(139, 92, 246, .12)); }
.tbl td { color: var(--ink-2); }
.tbl td:first-child { color: var(--ink); font-weight: 600; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl tbody tr:hover td { background: rgba(255, 193, 77, .05); }

/* FAQ */
.faq { display: grid; gap: 10px; margin: 6px 0 10px; }
.faq__item { border-radius: var(--r-md); background: rgba(255, 255, 255, .03); box-shadow: inset 0 0 0 1px var(--line); transition: background .2s ease; }
.faq__item[open] { background: rgba(47, 227, 198, .06); box-shadow: inset 0 0 0 1px rgba(47, 227, 198, .38); }
.faq__q { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 20px; font: 700 16px/1.4 var(--font); color: #fff; }
.faq__q::-webkit-details-marker { display: none; }
.faq__q::after { content: "+"; flex: none; width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; font: 800 18px/1 var(--font); color: #1c0d00; background: linear-gradient(135deg, var(--gold), var(--gold-2)); transition: transform .2s ease; }
.faq__item[open] .faq__q::after { transform: rotate(45deg); }
.faq__a { padding: 0 20px 6px; }

/* CTA + trust */
.cta-box { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; margin: 36px 0 6px; padding: 22px 24px; border-radius: var(--r-md); background: linear-gradient(115deg, rgba(139, 92, 246, .24), rgba(255, 143, 61, .12)); box-shadow: inset 0 0 0 1px rgba(255, 193, 77, .32); }
.cta-box p { margin: 0; color: var(--ink); font-weight: 700; }
.cta-box small { display: block; margin-top: 4px; color: var(--ink-3); font-weight: 400; font-size: 13px; }
.trust { margin: 30px 0 0; padding: 16px 20px; border-radius: var(--r-md); background: rgba(7, 9, 24, .4); box-shadow: inset 0 0 0 1px var(--line); display: flex; align-items: center; gap: 12px 20px; flex-wrap: wrap; }
.trust__t { margin: 0 !important; font: 800 13px/1.3 var(--font); letter-spacing: .1em; text-transform: uppercase; color: var(--teal) !important; }
.article .trust__list { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }
.article .trust__list li { margin: 0; padding: 0; }
.article .trust__list li::before { display: none; }
.trust__list a { display: inline-block; padding: 7px 12px; border-radius: 8px; font-size: 14px; font-weight: 700; text-decoration: none; color: var(--ink); background: rgba(255, 255, 255, .05); box-shadow: inset 0 0 0 1px var(--line-2); }
.trust__list a:hover { color: var(--teal); box-shadow: inset 0 0 0 1px rgba(47, 227, 198, .5); }

/* contact form */
.form { display: grid; gap: 14px; margin: 10px 0 20px; }
.form label { display: grid; gap: 6px; font-size: 14px; font-weight: 700; color: var(--ink); }
.form input, .form textarea { width: 100%; padding: 12px 14px; border-radius: var(--r-sm); border: 1px solid var(--line-2); background: rgba(0, 0, 0, .28); color: var(--ink); font: 400 16px/1.5 var(--font); }
.form textarea { min-height: 150px; resize: vertical; }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(255, 193, 77, .2); }
.form .btn { justify-self: start; }
.form__hp { position: absolute; left: -9999px; }
.form__ok { padding: 14px 18px; border-radius: var(--r-sm); background: rgba(47, 227, 198, .12); box-shadow: inset 0 0 0 1px rgba(47, 227, 198, .5); color: var(--ink) !important; }
.form__err { padding: 14px 18px; border-radius: var(--r-sm); background: rgba(255, 90, 90, .12); box-shadow: inset 0 0 0 1px rgba(255, 90, 90, .45); color: var(--ink) !important; }

/* footer */
.ftr { position: relative; margin-top: 60px; padding: 0 0 26px; background: linear-gradient(180deg, #0b0f2c 0%, #05061a 75%); }
.ftr::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--gold), var(--violet), var(--teal), transparent); }
.ftr__band { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; transform: translateY(-50%); padding: 22px 28px; border-radius: var(--r-lg); background: linear-gradient(115deg, #2a1a6e 0%, #141b4d 55%, #3a2410 100%); box-shadow: 0 0 0 1px rgba(255, 193, 77, .35), 0 22px 50px -22px rgba(255, 143, 61, .45); }
.ftr__band-t { margin: 0; font: 800 22px/1.2 var(--font-head); color: #fff; }
.ftr__band-s { margin: 4px 0 0; font-size: 14px; color: var(--ink-2); }
.ftr__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 36px; margin-top: 4px; }
.ftr__logo img { width: 180px; }
.ftr__about { margin: 16px 0 0; font-size: 14px; line-height: 1.65; color: var(--ink-3); max-width: 440px; }
.ftr__rg { display: flex; align-items: center; gap: 10px; margin: 18px 0 0; font-size: 13px; color: var(--ink-2); }
.ftr__age { flex: none; display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; font: 800 14px/1 var(--font); color: #1c0d00; background: linear-gradient(135deg, var(--gold), var(--gold-2)); }
.ftr__h { position: relative; margin: 0 0 16px; padding-bottom: 10px; font: 800 13px/1 var(--font); letter-spacing: .14em; text-transform: uppercase; color: #fff; }
.ftr__h::after { content: ""; position: absolute; left: 0; bottom: 0; width: 34px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--gold), var(--violet)); }
.ftr__links { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.ftr__links a { color: var(--ink-2); text-decoration: none; font-size: 15px; transition: color .15s ease, padding .15s ease; }
.ftr__links a:hover { color: var(--gold); padding-left: 6px; }
.ftr__help { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ftr__help a { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 12px; text-decoration: none; background: rgba(255, 255, 255, .03); box-shadow: inset 0 0 0 1px var(--line); transition: background .15s ease, box-shadow .15s ease; }
.ftr__help a:hover { background: rgba(47, 227, 198, .06); box-shadow: inset 0 0 0 1px rgba(47, 227, 198, .45); }
.ftr__ico { flex: none; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px; font: 800 15px/1 var(--font); color: var(--teal); background: rgba(47, 227, 198, .12); }
.ftr__help strong { display: block; font-size: 14px; color: #fff; }
.ftr__help small { display: block; font-size: 12px; color: var(--ink-3); }
.ftr__bottom { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink-3); }
.ftr__bottom p { margin: 0; }
.ftr__top { color: var(--ink-2); text-decoration: none; font-weight: 700; }
.ftr__top:hover { color: var(--gold); }

/* 404 */
.nf { text-align: center; padding: 40px 0 10px; }
.nf__code { font: 800 110px/1 var(--font-head); background: linear-gradient(90deg, var(--gold), var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* responsive */
@media (max-width: 1080px) {
  .hdr__nav { position: fixed; top: var(--hdr-h); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 2px; padding: 12px 16px 18px; background: rgba(7, 9, 24, .97); border-bottom: 1px solid var(--line); transform: translateY(-8px); opacity: 0; visibility: hidden; transition: all .2s ease; margin: 0; }
  .hdr__nav a { padding: 13px 14px; font-size: 16px; }
  .hdr__nav a.is-active::after { left: 14px; right: auto; width: 28px; }
  .nav-toggle:checked ~ .hdr__nav { transform: none; opacity: 1; visibility: visible; }
  .hdr__burger { display: grid; place-items: center; width: 44px; height: 44px; margin-left: auto; border-radius: 12px; cursor: pointer; color: var(--ink); background: rgba(255, 255, 255, .06); }
  .ftr__grid { grid-template-columns: 1fr 1fr; }
  .ftr__brand { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding: 0 12px; }
  .hdr__logo img { width: 120px; }
  .hdr__cta { min-height: 40px; padding: 0 16px; font-size: 14px; }
  .hero__slide img { height: auto; aspect-ratio: 640 / 614; object-position: center; }
  .hero__slide { display: flex; flex-direction: column; }
  .hero__slide::after { display: none; }
  .hero__copy { position: static; transform: none; width: auto; gap: 10px; padding: 16px 16px 18px; background: linear-gradient(180deg, var(--surface), var(--bg-2)); }
  .hero__line { font-size: 22px; }
  .hero__copy .btn { width: 100%; }
  .adv__list { grid-auto-columns: 86%; }
  .banner img { height: auto; aspect-ratio: 8 / 3; }
  .shot { float: none; width: 100%; margin: 20px 0 !important; }
  .article { padding: 28px 18px; border-radius: var(--r-md); margin-top: 18px; }
  .article::before { left: 18px; right: 18px; }
  .article h2 { margin-top: 38px; }
  .ftr__grid { gap: 28px; }
  .ftr__brand, .ftr__grid > .ftr__col:last-child { grid-column: 1 / -1; }
  .ftr__band { padding: 18px; }
  .ftr__band .btn { width: 100%; }
}
@media (max-width: 420px) {
  .hdr__in { gap: 12px; }
  .hdr__cta { padding: 0 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .adv__card, .hero__dot, .faq__q::after { transition: none; }
}