:root { font-family: Inter, system-ui, sans-serif; color: #17233a; background: #f4f9ff; }
* { box-sizing: border-box; }
body { margin: 0; }
header { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #dbe7f3; padding: 18px max(24px, calc((100vw - 900px) / 2)); background: #fff; }
a { color: inherit; text-decoration: none; }
button { border: 1px solid #a9cdee; padding: 8px 14px; background: #fff; cursor: pointer; }
main { width: min(calc(100% - 36px), 900px); margin: 0 auto; padding: 64px 0 100px; }
.eyebrow { color: #5799dc; font-size: 11px; font-weight: 900; letter-spacing: .18em; }
h1 { margin: 8px 0 12px; font: 400 clamp(38px, 7vw, 64px) Georgia, serif; }
main > p:not(.eyebrow) { color: #617187; }
.faq-list { display: grid; gap: 10px; margin-top: 36px; }
details { border: 1px solid #dbe7f3; background: #fff; }
summary { padding: 20px; font-weight: 800; cursor: pointer; }
details p { border-top: 1px solid #e5edf5; margin: 0; padding: 18px 20px; color: #526277; line-height: 1.6; white-space: pre-line; }
aside { display: grid; gap: 8px; margin-top: 32px; padding: 24px; background: #172b43; color: #fff; }
aside span { color: #d6e2ee; }
aside a { width: max-content; margin-top: 8px; border-radius: 4px; padding: 12px 18px; background: #32b66a; font-weight: 800; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 8px; }
aside .phone-link { background: #fff; color: #172b43; }

/* Unified mobile support center. */
.help-header { position: sticky; top: 0; z-index: 70; min-height: 92px; border-color: #2b3d57; background: #14233d; color: #fff; }
.help-logo { display: flex; align-items: center; gap: 10px; font: 600 20px Baskerville, "Iowan Old Style", Georgia, serif; letter-spacing: .1em; }
.help-logo img { width: 66px; height: 66px; object-fit: contain; }
.help-logo span { display: grid; }
.help-logo small { color: #d9b56d; font: 500 7px Optima, sans-serif; letter-spacing: .2em; text-transform: uppercase; }
.help-header button { border-color: #7f8ca0; border-radius: 8px; background: transparent; color: #fff; }
.back-link { display: inline-flex; min-height: 40px; align-items: center; color: #48627f; font-size: 13px; font-weight: 700; }
.info-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 26px; }
.info-links a { display: grid; min-height: 92px; place-items: center; gap: 5px; border: 1px solid #dbe7f3; border-radius: 12px; padding: 12px 6px; background: #fff; text-align: center; }
.info-links span { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 50%; background: #edf6ff; color: #172b43; font-size: 18px; }
.info-links b { font-size: 12px; }
.help-tabbar { display: none; }

@media (max-width: 720px) {
  body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); background: #f5f9fd; }
  .help-header { min-height: 74px; padding: max(7px, env(safe-area-inset-top)) 12px 7px; }
  .help-logo { gap: 8px; font-size: 16px; letter-spacing: .08em; }
  .help-logo img { width: 52px; height: 52px; }
  .help-logo small { font-size: 6px; }
  .help-header button { min-width: 42px; min-height: 38px; padding: 0 8px; }
  main { width: 100%; padding: 14px 12px calc(88px + env(safe-area-inset-bottom)); }
  .eyebrow { margin: 8px 0 0; font-size: 9px; }
  h1 { margin-top: 6px; font-size: 36px; line-height: 1.02; }
  main > p:not(.eyebrow) { margin-top: 8px; font-size: 14px; line-height: 1.45; }
  .info-links { grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 18px; }
  .info-links a { min-height: 78px; }
  .faq-list { gap: 8px; margin-top: 20px; }
  details { border-radius: 10px; overflow: hidden; }
  summary { padding: 15px; font-size: 14px; }
  details p { padding: 14px 15px; font-size: 13px; line-height: 1.5; }
  aside { margin-top: 20px; border-radius: 12px; padding: 18px; }
  .contact-actions { display: grid; grid-template-columns: 1fr; width: 100%; }
  aside a { width: 100%; min-height: 48px; text-align: center; }

  .help-tabbar {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 120;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    min-height: calc(64px + env(safe-area-inset-bottom));
    border-top: 1px solid #d6e0eb;
    padding: 5px 4px env(safe-area-inset-bottom);
    background: rgb(255 255 255 / 97%);
    box-shadow: 0 -8px 24px rgb(20 35 61 / 10%);
  }
  .help-tabbar a { position: relative; display: grid; min-width: 0; min-height: 54px; place-items: center; gap: 1px; padding: 4px 2px; color: #526175; }
  .help-tabbar a.active { color: #14233d; }
  .help-tabbar a.active::after { position: absolute; top: 0; width: 28px; height: 2px; border-radius: 2px; background: #d9b56d; content: ""; }
  .help-tabbar span { color: #14233d; font-size: 23px; line-height: 1; }
  .help-tabbar span svg { display: block; width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-width: 1.35; stroke-linecap: round; stroke-linejoin: round; }
  .help-tabbar small { overflow: hidden; max-width: 100%; font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
}