:root,
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a1120;
  --surface: #111c2f;
  --surface-soft: #17253c;
  --surface-accent: #162947;
  --text: #f0f5ff;
  --muted: #aebcd0;
  --primary: #82adff;
  --primary-bg: #3268d3;
  --primary-hover: #4279e4;
  --border: #2a3b55;
  --border-soft: #223149;
  --focus: #ffc766;
  --danger: #ff9ca8;
  --mark: #20365c;
  --shadow: #0008;
  --banner-overlay: linear-gradient(90deg, rgba(3, 8, 18, .25), transparent 72%);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f8fafc;
  --surface: #fff;
  --surface-soft: #f1f5fb;
  --surface-accent: #eaf0ff;
  --text: #172b45;
  --muted: #5f7087;
  --primary: #245ed0;
  --primary-bg: #285ed0;
  --primary-hover: #194ba9;
  --border: #d8e1ed;
  --border-soft: #e8edf4;
  --focus: #b66d00;
  --danger: #a32431;
  --mark: #edf2ff;
  --shadow: #8ca4ce55;
  --banner-overlay: linear-gradient(90deg, rgba(3, 8, 18, .18), transparent 72%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 25px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  transition: background-color .18s ease, color .18s ease;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
header, main, footer { max-width: 1200px; margin: auto; padding: 28px 32px; }
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  border-bottom: 1px solid var(--border);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  color: var(--text);
  flex: 0 0 auto;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  display: block;
  width: 88px;
  height: 88px;
  object-fit: contain;
}
.brand-copy { display: block; min-width: 0; }
.brand-name {
  display: block;
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -1.4px;
  white-space: nowrap;
}
.brand-soft-k {
  color: var(--muted);
  opacity: .22;
}
nav { display: flex; align-items: center; gap: 22px; }
.site-nav { justify-content: flex-end; flex-wrap: wrap; }
.site-controls { display: flex; align-items: center; gap: 8px; }
.language-form { display: flex; align-items: center; gap: 6px; margin: 0; }
.language-form select { width: auto; min-width: 112px; margin: 0; padding: 8px 30px 8px 10px; }
.control-button, .control-submit {
  min-height: 38px;
  padding: 7px 11px;
  gap: 7px;
  font-size: 12px;
  white-space: nowrap;
}
.theme-icon { font-size: 16px; line-height: 1; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
button, .button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--primary-bg);
  border-radius: 8px;
  background: var(--primary-bg);
  color: #fff;
  padding: 11px 20px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.button:hover, button:hover { background: var(--primary-hover); text-decoration: none; }
.secondary { background: var(--surface); color: var(--primary); border-color: var(--border); }
.secondary:hover { background: var(--surface-soft); }
main { min-height: 75vh; padding-top: 36px; }
.eyebrow { font-size: 10px; letter-spacing: 2px; font-weight: 700; color: var(--muted); }
h1 { font-size: 44px; line-height: 1.15; letter-spacing: -1.7px; margin: 20px 0; }
h2 { font-size: 25px; line-height: 1.3; letter-spacing: -.6px; margin: 12px 0; }
p { color: var(--muted); }
.features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 22px 0 50px; }
.features article, .form-card, .notice {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}
.features p { margin-bottom: 0; }
.section-heading { display: flex; align-items: center; justify-content: space-between; }
.tag { font-size: 12px; border: 1px solid var(--border); border-radius: 20px; padding: 6px 12px; }
.filters {
  display: flex;
  align-items: end;
  gap: 12px;
  background: var(--surface);
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-top: 20px;
}
label { display: block; font-size: 12px; font-weight: 600; }
.filters label { flex: 1; }
input, select {
  display: block;
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  border-radius: 7px;
  padding: 11px;
  margin-top: 6px;
  color: var(--text);
  font: inherit;
}
.muted { font-size: 12px; color: var(--muted); }
.price-list { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); overflow: hidden; }
.price-row {
  display: grid;
  grid-template-columns: 40px 1fr 160px 175px auto;
  gap: 16px;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-soft);
}
.price-row:last-child { border: 0; }
.price-row span { display: block; }
.service-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--mark);
  color: var(--primary);
  font-weight: bold;
}
.price small, small { font-size: 11px; font-weight: 400; }
.empty { padding: 30px; }
.form-card { max-width: 550px; margin: 32px auto; }
.form-card h1 { font-size: 32px; }
.payment-card { max-width: 620px; }
.exact-payment-warning {
  margin: 20px 0;
  padding: 20px;
  border: 2px solid var(--focus);
  border-radius: 12px;
  background: var(--surface-accent);
  text-align: center;
}
.exact-payment-warning span { display: block; color: var(--text); font-weight: 700; }
.exact-payment-warning p { margin: 8px 0 0; color: var(--text); }
.exact-payment-amount { display: block; margin: 8px 0; color: var(--focus); font-size: 36px; line-height: 1.2; }
.payment-qr { width: fit-content; margin: 22px auto; padding: 10px; border-radius: 12px; background: #fff; line-height: 0; }
.payment-timer { color: var(--text); font-size: 18px; font-weight: 700; }
.helptext { display: block; font-size: 12px; color: var(--muted); }
.errorlist { color: var(--danger); padding-left: 20px; font-size: 13px; }
.balance { font-size: 28px; }
.pagination { justify-content: center; padding: 24px; }
footer {
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 12px;
  color: var(--muted);
}
:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
.activation-card { margin: 18px 0; }
.sms-text { white-space: pre-wrap; overflow-wrap: anywhere; }
.sms-history { display: grid; gap: 10px; margin: 16px 0; }
.sms-message { padding: 12px; border: 1px solid var(--border); border-radius: 12px; }
.sms-message p { margin: 6px 0; }
.resend-form { margin: 12px 0; }
.break-all { overflow-wrap: anywhere; }
button:disabled { opacity: .6; cursor: wait; }
.form-card input[readonly] { font-family: monospace; }
.form-card .secondary { margin: 10px 0; }
.notice { overflow-wrap: anywhere; }
header nav { flex-wrap: wrap; }
.account-menu {
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.account-menu a, .account-menu button { display: flex; align-items: center; gap: 6px; }
.menu-icon {
  width: 20px;
  height: 20px;
  flex: none;
  display: inline-block;
  background: currentColor;
  mask: var(--icon) center/contain no-repeat;
  -webkit-mask: var(--icon) center/contain no-repeat;
}
.account-menu a:hover { color: var(--primary); }
.account-menu a[aria-current="page"] { font-weight: bold; color: var(--text); }
.account-menu button:disabled { opacity: .5; }
.banners { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 40px; }
.banner {
  position: relative;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--surface-accent);
  overflow: hidden;
  box-shadow: 0 14px 36px var(--shadow);
}
.banner::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--banner-overlay);
  pointer-events: none;
}
.banner-main { grid-column: 1 / -1; min-height: 426px; }
.banner picture { display: block; position: absolute; inset: auto 0 0; }
.banner img { display: block; width: 100%; height: auto; }
.banner-copy { position: relative; z-index: 2; padding: 42px; width: 56%; }
.banner-copy h1, .banner-copy h2 { color: #f5f8ff; }
.banner-copy p { color: #b9c7dd; font-size: 14px; }
.banner-copy .eyebrow { color: #91a9cc; }
.banner-main h1 { font-size: 42px; }
.banner-small .banner-copy { padding: 24px; width: 54%; }
.banner-small { min-height: 335px; }
.banner-small h2 { font-size: 24px; }
.banner-small .button { font-size: 12px; padding: 9px 12px; }
.banner-small .eyebrow { font-size: 8px; letter-spacing: 1px; }

@media (max-width: 900px) {
  header { align-items: flex-start; flex-wrap: wrap; }
  .site-nav { width: 100%; justify-content: flex-start; }
}

@media (max-width: 768px) {
  header, main, footer { padding: 20px; }
  .brand { gap: 12px; }
  .brand-mark { width: 80px; height: 80px; }
  .brand-name { font-size: 40px; }
  nav { gap: 12px; flex-wrap: wrap; font-size: 12px; }
  .site-controls { width: 100%; }
  .language-form { flex: 1; }
  .language-form select { flex: 1; }
  header { flex-wrap: wrap; }
  h1 { font-size: 36px; }
  .features { grid-template-columns: 1fr; gap: 12px; margin-bottom: 30px; }
  .filters { flex-wrap: wrap; }
  .filters label { flex: 1 1 100%; }
  .price-row { grid-template-columns: 35px 1fr auto; gap: 10px; padding: 16px; }
  .price-row > .muted { grid-column: 2; }
  .price-row form { grid-column: 3; grid-row: 2; }
  .price { font-size: 12px; }
  .price-row button { padding: 7px 10px; font-size: 12px; }
  .section-heading { gap: 10px; }
  .tag { white-space: nowrap; }
  footer { flex-direction: column; }
  .form-card { padding: 20px; }
  .balance { font-size: 24px; }
  .banners { grid-template-columns: 1fr; }
  .banner-main { grid-column: auto; min-height: 0; }
  .banner-small { min-height: 0; }
  .banner { display: flex; flex-direction: column; }
  .banner-copy, .banner-small .banner-copy { width: 100%; padding: 24px; }
  .banner picture { position: static; order: 2; }
  .banner-main h1 { font-size: 34px; }
  .banner img { aspect-ratio: 3 / 2; object-fit: contain; }
  .banner-main img { aspect-ratio: 6 / 5; }
}

@media (max-width: 420px) {
  .brand { gap: 9px; }
  .brand-mark { width: 64px; height: 64px; }
  .brand-name { font-size: 32px; letter-spacing: -1px; }
}