:root {
  --dai-ink: #071b36;
  --dai-navy: #102f4e;
  --dai-blue: #0d75f5;
  --dai-blue-dark: #075bc0;
  --dai-cyan: #25cce6;
  --dai-paper: #f6fbff;
  --dai-surface: rgba(255, 255, 255, .94);
  --dai-line: #d7e7f1;
  --dai-muted: #58738a;
  --dai-shadow: 0 18px 55px rgba(20, 60, 93, .1);
  --dai-radius: 20px;
}

.doctorai-public-page {
  display: block;
  min-width: 320px;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 8% 2%, rgba(68, 218, 237, .14), transparent 26rem),
    radial-gradient(circle at 92% 8%, rgba(127, 125, 255, .09), transparent 28rem),
    linear-gradient(180deg, #f8fcff, #f2f9fe 54%, #fbfdff);
  color: var(--dai-ink);
  font-family: 'DM Sans', Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
}

.doctorai-public-page *, .doctorai-public-page *::before, .doctorai-public-page *::after { box-sizing: border-box; }
.doctorai-public-page a, .doctorai-public-page button { -webkit-tap-highlight-color: transparent; }
.doctorai-public-page a:focus-visible,
.doctorai-public-page button:focus-visible,
.doctorai-public-page input:focus-visible,
.doctorai-public-page textarea:focus-visible { outline: 3px solid rgba(13, 117, 245, .28); outline-offset: 3px; }

.doctorai-site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  border-bottom: 1px solid rgba(210, 229, 239, .9);
  background: rgba(255, 255, 255, .91);
  box-shadow: 0 8px 28px rgba(19, 61, 94, .055);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  backdrop-filter: blur(18px) saturate(1.2);
}
.doctorai-site-header-inner {
  width: min(1180px, calc(100% - 40px));
  min-height: 74px;
  display: flex;
  align-items: center;
  gap: 24px;
  margin: auto;
}
.doctorai-site-brand { width: 142px; height: 62px; display: flex; align-items: center; flex: 0 0 auto; }
.doctorai-site-brand img { width: 100%; height: 100%; object-fit: contain; }
.doctorai-site-menu { min-width: 0; display: flex; align-items: center; gap: 5px; margin-left: auto; }
.doctorai-site-menu > a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  border-radius: 11px;
  color: var(--dai-muted);
  font-size: 12px;
  font-weight: 750;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s ease, background .18s ease, transform .18s ease;
}
.doctorai-site-menu > a:hover { background: #edf8fe; color: var(--dai-blue-dark); }
.doctorai-site-menu > a[aria-current='page'] { background: #e7f6ff; color: var(--dai-blue-dark); box-shadow: inset 0 0 0 1px #cce9f6; }
.doctorai-site-menu > .doctorai-site-primary {
  min-height: 42px;
  gap: 15px;
  margin-left: 7px;
  padding: 0 15px;
  background: var(--dai-ink);
  color: #fff;
  box-shadow: 0 9px 22px rgba(7, 27, 54, .16);
}
.doctorai-site-menu > .doctorai-site-primary:hover { background: #12395f; color: #fff; transform: translateY(-1px); }
.doctorai-site-primary span { color: #7de9f7; font-size: 16px; }
.doctorai-site-menu-button { display: none; }

.doctorai-public-page .research-header,
.doctorai-public-page .pro-topbar,
.doctorai-public-page main > .top,
.doctorai-public-page .pro-footer,
.doctorai-public-page .footer:not(.doctorai-site-footer) { display: none !important; }
.doctorai-public-page .research-main { padding-top: 46px; }
.doctorai-public-page .research-tabs { top: 82px; }
.doctorai-public-page .pro-shell > main { width: min(1180px, calc(100% - 48px)); }
.doctorai-public-page main.shell {
  width: min(680px, calc(100% - 28px));
  min-height: 0;
  display: block;
  margin: clamp(34px, 7vw, 76px) auto;
  padding: clamp(28px, 5vw, 48px);
  border: 1px solid var(--dai-line);
  border-radius: 26px;
  background: rgba(255, 255, 255, .94);
  box-shadow: var(--dai-shadow);
}
.doctorai-public-page main:not(.research-main):not(.shell):not(.pro-main) { width: min(980px, calc(100% - 40px)); }
.doctorai-public-page .panel { border-color: var(--dai-line); box-shadow: var(--dai-shadow); }
.doctorai-public-page .eyebrow { color: var(--dai-blue-dark); }
.doctorai-public-page .install,
.doctorai-public-page .primary-cta,
.doctorai-public-page .plan-primary { background: var(--dai-ink); }

.doctorai-site-footer { width: 100%; border-top: 1px solid var(--dai-line); background: rgba(255,255,255,.78); }
.doctorai-site-footer-inner {
  width: min(1180px, calc(100% - 40px));
  min-height: 126px;
  display: grid;
  grid-template-columns: auto minmax(260px, 1fr) auto;
  align-items: center;
  gap: 34px;
  margin: auto;
  padding: 25px 0;
}
.doctorai-site-footer-brand { display: flex; align-items: center; gap: 9px; color: var(--dai-ink); text-decoration: none; }
.doctorai-site-footer-brand img { width: 42px; height: 42px; object-fit: contain; }
.doctorai-site-footer-brand b, .doctorai-site-footer-brand small { display: block; }
.doctorai-site-footer-brand b { font-size: 14px; }
.doctorai-site-footer-brand small { margin-top: 2px; color: var(--dai-muted); font-size: 9px; }
.doctorai-site-footer p { max-width: 560px; margin: 0; color: var(--dai-muted); font-size: 11px; line-height: 1.6; }
.doctorai-site-footer nav { display: flex; gap: 16px; }
.doctorai-site-footer nav a { color: var(--dai-blue-dark); font-size: 11px; font-weight: 750; text-decoration: none; }

@media (max-width: 820px) {
  .doctorai-site-header-inner { width: calc(100% - 24px); min-height: 68px; }
  .doctorai-site-brand { width: 116px; height: 54px; }
  .doctorai-site-menu-button {
    width: 42px;
    height: 42px;
    display: grid;
    place-content: center;
    gap: 4px;
    margin-left: auto;
    padding: 0;
    border: 1px solid var(--dai-line);
    border-radius: 13px;
    background: #fff;
    color: var(--dai-ink);
  }
  .doctorai-site-menu-button span { width: 19px; height: 2px; display: block; border-radius: 2px; background: currentColor; transition: transform .18s ease, opacity .18s ease; }
  .doctorai-site-header.menu-open .doctorai-site-menu-button span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .doctorai-site-header.menu-open .doctorai-site-menu-button span:nth-child(2) { opacity: 0; }
  .doctorai-site-header.menu-open .doctorai-site-menu-button span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .doctorai-site-menu {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 7px;
    margin: 0;
    padding: 12px;
    border-bottom: 1px solid var(--dai-line);
    background: rgba(255,255,255,.98);
    box-shadow: 0 18px 34px rgba(7,27,54,.13);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-7px);
    pointer-events: none;
    transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
  }
  .doctorai-site-header.menu-open .doctorai-site-menu { visibility: visible; opacity: 1; transform: none; pointer-events: auto; }
  .doctorai-site-menu > a { min-height: 48px; justify-content: flex-start; padding: 0 14px; border: 1px solid #e3edf3; background: #fafdff; font-size: 12px; }
  .doctorai-site-menu > .doctorai-site-primary { grid-column: 1 / -1; justify-content: space-between; margin: 0; }
  .doctorai-public-page .research-main { width: calc(100% - 26px); padding-top: 30px; }
  .doctorai-public-page .research-tabs { top: 75px; }
  .doctorai-public-page .pro-shell > main { width: calc(100% - 28px); }
  .doctorai-site-footer-inner { grid-template-columns: 1fr; gap: 16px; min-height: 0; padding: 28px 0; }
  .doctorai-site-footer nav { flex-wrap: wrap; }
}

@media (max-width: 420px) {
  .doctorai-site-menu { grid-template-columns: 1fr; }
  .doctorai-site-menu > .doctorai-site-primary { grid-column: auto; }
  .doctorai-public-page main:not(.research-main):not(.shell):not(.pro-main) { width: calc(100% - 22px); padding-inline: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .doctorai-site-menu, .doctorai-site-menu-button span, .doctorai-site-menu > a { transition: none; }
}

.doctorai-system-page {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: radial-gradient(circle at 8% 2%, rgba(68,218,237,.14), transparent 26rem), linear-gradient(180deg,#f8fcff,#f2f9fe);
  color: var(--dai-ink);
  font-family: 'DM Sans', Inter, ui-sans-serif, system-ui, sans-serif;
}
.doctorai-system-page .doctorai-system-back { position: fixed; top: max(16px, env(safe-area-inset-top)); left: 18px; z-index: 5; color: var(--dai-blue-dark); font-size: 12px; font-weight: 800; text-decoration: none; }
.doctorai-system-page.mobile-auth-page .card { border-color: var(--dai-line); border-radius: 24px; box-shadow: var(--dai-shadow); }
.doctorai-system-footer { position: fixed; right: 18px; bottom: max(16px, env(safe-area-inset-bottom)); left: 18px; display: flex; justify-content: center; gap: 15px; color: var(--dai-muted); font-size: 10px; }
.doctorai-system-footer a { color: var(--dai-blue-dark); font-weight: 750; text-decoration: none; }
.doctorai-system-page.staff-page { background: radial-gradient(circle at 8% 2%, rgba(68,218,237,.14), transparent 26rem), linear-gradient(180deg,#f8fcff,#f2f9fe); }
.doctorai-system-page.staff-page .panel { border-color: var(--dai-line); box-shadow: var(--dai-shadow); }

/* Shared premium public-page finish. */
.doctorai-site-menu > .doctorai-site-primary,
.doctorai-public-page :is(.install, .primary-cta, .plan-primary) {
  background: linear-gradient(115deg, #075ed9, #0787b8);
  color: #fff;
  box-shadow: 0 10px 24px rgba(7, 94, 217, .2);
}
.doctorai-public-page :is(h1, h2) { letter-spacing: -.04em; }
.doctorai-public-page main.shell,
.doctorai-public-page .panel {
  border-radius: 28px;
  box-shadow: 0 20px 52px rgba(8, 74, 126, .1);
}
.doctorai-site-footer { box-shadow: 0 -12px 34px rgba(8, 74, 126, .035); }