:root {
  color-scheme: light;
  --ink: #121821;
  --muted: #5d6978;
  --line: #d9e0e6;
  --panel: #ffffff;
  --panel-soft: #f5f7f8;
  --canvas: #eef2f4;
  --blue: #1570ef;
  --blue-dark: #254f7d;
  --green: #039855;
  --red: #b91c1c;
  --amber: #a75d1e;
  --radius: 8px;
  --shadow: 0 18px 46px rgba(29, 41, 57, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html,
body {
  min-height: 100%;
  max-width: 100%;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
}

a {
  color: inherit;
}

button,
input {
  max-width: 100%;
  font: inherit;
}

.support-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 68px;
  border-bottom: 1px solid rgba(18, 24, 33, 0.1);
  padding: 12px 28px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: var(--radius);
  background: #121821;
  color: #fff;
  font-size: 13px;
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
  white-space: nowrap;
}

.brand strong {
  font-size: 16px;
  line-height: 1.08;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.top-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.top-links a,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 12px;
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 850;
  text-decoration: none;
}

.top-links .primary-link,
.button.primary {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}

main {
  display: grid;
  gap: 18px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 18px;
  align-items: end;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px;
  background: var(--panel);
}

.eyebrow {
  color: var(--red);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  max-width: 760px;
  margin-top: 8px;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 0.98;
}

.hero p {
  max-width: 690px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.42;
}

.support-search {
  display: grid;
  gap: 8px;
}

.support-search span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.support-search input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 14px;
  background: var(--panel-soft);
  color: var(--ink);
  font-size: 15px;
  font-weight: 750;
  outline: 0;
}

.support-search input:focus {
  border-color: rgba(21, 112, 239, 0.65);
  box-shadow: 0 0 0 3px rgba(21, 112, 239, 0.12);
}

.quick-grid,
.video-grid,
.help-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.quick-card,
.video-card,
.help-grid article {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: var(--panel);
}

.quick-card {
  display: grid;
  gap: 8px;
  text-decoration: none;
}

.quick-card:hover,
.quick-card:focus-visible,
.top-links a:hover,
.top-links a:focus-visible,
.button:hover,
.button:focus-visible {
  border-color: rgba(21, 112, 239, 0.65);
}

.quick-card small {
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.quick-card strong {
  font-size: 18px;
  line-height: 1.1;
}

.quick-card span,
.video-card p,
.help-grid p,
.section-heading p,
.contact-card li {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
}

.support-section {
  display: grid;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  background: var(--panel);
}

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.section-heading > span {
  display: grid;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: var(--radius);
  background: #fee4e2;
  color: var(--red);
  font-size: 13px;
  font-weight: 950;
}

.section-heading div {
  min-width: 0;
}

h2 {
  font-size: 26px;
  line-height: 1.1;
}

.checklist {
  display: grid;
  gap: 8px;
}

.checklist label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: var(--panel-soft);
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.35;
}

.checklist input {
  width: 18px;
  height: 18px;
  margin: 1px 0 0;
  accent-color: var(--green);
}

.video-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.video-card {
  display: grid;
  gap: 10px;
}

.video-frame {
  display: grid;
  min-height: 128px;
  align-content: center;
  gap: 8px;
  border: 1px solid rgba(21, 112, 239, 0.22);
  border-radius: var(--radius);
  padding: 14px;
  background:
    linear-gradient(135deg, rgba(21, 112, 239, 0.14), rgba(3, 152, 85, 0.13)),
    var(--panel-soft);
}

.video-frame span {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 999px;
  background: var(--blue);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
}

.video-frame strong {
  font-size: 20px;
  line-height: 1;
}

.video-card h3,
.help-grid h3,
.contact-card h3 {
  font-size: 17px;
  line-height: 1.2;
}

details {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

summary {
  cursor: pointer;
  color: var(--blue-dark);
  font-size: 13px;
  font-weight: 900;
}

details ol {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.45;
}

.help-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.help-grid article {
  display: grid;
  gap: 8px;
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: end;
  border: 1px solid rgba(3, 152, 85, 0.26);
  border-radius: var(--radius);
  padding: 16px;
  background: rgba(3, 152, 85, 0.08);
}

.contact-card ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.is-hidden-by-search {
  display: none !important;
}

@media (max-width: 900px) {
  .support-topbar {
    align-items: flex-start;
    padding: 12px 18px;
  }

  .hero,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .quick-grid,
  .video-grid,
  .help-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 620px) {
  .support-topbar {
    position: static;
    display: grid;
  }

  .top-links {
    justify-content: stretch;
  }

  .top-links a {
    flex: 1 1 44%;
  }

  main {
    width: min(100% - 20px, 1180px);
    padding: 14px 0 28px;
  }

  .hero,
  .support-section {
    padding: 14px;
  }

  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 22px;
  }

  .quick-grid,
  .video-grid,
  .help-grid {
    grid-template-columns: 1fr;
  }
}