*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg: #F4F6FB;
  --surface: #FFFFFF;
  --surface-2: #F8FAFC;
  --text: #111827;
  --muted: #5B6578;
  --border: rgba(17, 24, 39, 0.10);
  --accent: #2563EB;
  --accent-soft: rgba(37, 99, 235, 0.10);
  --danger: #E11D48;
  --ok: #059669;
  --shadow: 0 10px 40px rgba(17, 24, 39, 0.06);
  --radius: 16px;
}

html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background:
    radial-gradient(900px 480px at 8% -10%, rgba(37, 99, 235, 0.12), transparent 60%),
    radial-gradient(700px 420px at 100% 0%, rgba(99, 102, 241, 0.10), transparent 55%),
    var(--bg);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.shell { max-width: 1080px; margin: 0 auto; padding: 22px 18px 64px; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
}
.brand {
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -0.03em;
  color: var(--text);
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand span { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 6px;
  flex: 1;
  justify-content: flex-end;
}
.nav-links a {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 999px;
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(255,255,255,0.7);
}
.nav-right { display: flex; align-items: center; gap: 10px; }
.session {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 4px 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.8);
}
.session-email { font-size: 12px; color: var(--muted); max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.langToggle {
  display: flex;
  gap: 4px;
  padding: 4px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.8);
}
.langToggle button {
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
}
.langToggle button.active {
  background: var(--accent-soft);
  border-color: rgba(37, 99, 235, 0.28);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.card.nested {
  background: var(--surface-2);
  box-shadow: none;
  padding: 16px;
}

h1 { margin: 0 0 8px; font-size: 28px; letter-spacing: -0.03em; line-height: 1.2; }
h2 { margin: 0 0 8px; font-size: 16px; }
.sub, p, li { color: var(--muted); font-size: 14px; line-height: 1.55; }
.sub { margin: 0 0 14px; }

label { display: block; font-size: 12px; color: var(--muted); margin: 0 0 6px; font-weight: 600; }
input, select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  outline: none;
  min-width: 0;
  font-size: 14px;
}
input:focus, select:focus {
  border-color: rgba(37, 99, 235, 0.55);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}

button {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
}
button:hover { background: #F8FAFC; }
button.primary {
  border-color: transparent;
  background: var(--accent);
  color: #fff;
}
button.primary:hover { filter: brightness(0.96); }
button.danger {
  border-color: rgba(225, 29, 72, 0.28);
  background: rgba(225, 29, 72, 0.08);
  color: var(--danger);
}
button.ghost { background: transparent; }
.btn-link { text-decoration: none; }

.actions { display: flex; gap: 10px; margin-top: 14px; align-items: center; flex-wrap: wrap; }
.formGrid { display: grid; gap: 12px; }
.field { display: grid; gap: 6px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 8px; }
.footer { margin-top: 14px; color: var(--muted); font-size: 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.status { margin-top: 10px; font-size: 13px; color: var(--muted); white-space: pre-wrap; }
.ok { color: var(--ok); }
.err { color: var(--danger); }

.kv { display: grid; grid-template-columns: 140px 1fr; gap: 8px 12px; align-items: center; }
.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  background: #fff;
}
.pill.ok { border-color: rgba(5, 150, 105, 0.28); color: var(--ok); }
.pill.err { border-color: rgba(225, 29, 72, 0.28); color: var(--danger); }
.pill.warn { border-color: rgba(37, 99, 235, 0.28); color: var(--accent); }

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 16px;
  align-items: stretch;
  margin-bottom: 16px;
}
.tagline { margin: 0 0 16px; color: var(--muted); font-size: 15px; line-height: 1.5; }
.steps-mini { margin: 0; padding-left: 18px; color: var(--muted); font-size: 14px; }
.steps-mini li { margin: 6px 0; }

.pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 18px;
}
.planCard {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
}
.planName { font-weight: 750; }
.price { font-size: 22px; margin-top: 6px; letter-spacing: -0.03em; }
.per { color: var(--muted); font-size: 12px; margin-left: 4px; font-weight: 500; }
.bul { margin: 10px 0 0; padding-left: 16px; color: var(--muted); font-size: 13px; line-height: 1.45; }
.bul li { margin: 5px 0; }

.dash { display: grid; gap: 14px; }
.dash-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 14px; }
.cta-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.cta-note { font-size: 12px; color: var(--muted); }

.fatal { border-color: rgba(225, 29, 72, 0.45); margin-bottom: 14px; }

.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.page-kicker { font-size: 12px; color: var(--muted); font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }

.guide h2 { margin: 22px 0 8px; }
.guide ul { margin: 0; padding-left: 18px; }
.guide li { margin: 7px 0; }

@media (max-width: 900px) {
  .hero, .dash-grid, .pricing, .kv { grid-template-columns: 1fr; }
  .nav { flex-wrap: wrap; }
  .nav-links { order: 3; width: 100%; justify-content: flex-start; }
  h1 { font-size: 24px; }
}