:root {
  --navy: #081426;
  --navy-soft: #0f172a;
  --blue: #60a5fa;
  --blue-strong: #2563eb;
  --text: #f8fafc;
  --muted: #cbd5e1;
  --line: rgba(148, 163, 184, .34);
  --glass: rgba(8, 20, 38, .82);
}
* { box-sizing: border-box; }
html { min-height: 100%; background: var(--navy); }
body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(110deg, rgba(4, 13, 29, .96), rgba(8, 24, 49, .86) 55%, rgba(4, 13, 29, .93)),
    url("../img/background.jpg") center / cover fixed no-repeat;
}
.transition-shell {
  width: min(1180px, calc(100% - 32px));
  margin: auto;
  padding: 26px 0 18px;
}
.transition-card {
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(26px, 3.7vw, 44px);
  text-align: center;
  background: linear-gradient(180deg, rgba(15, 23, 42, .8), var(--glass));
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, .34);
  backdrop-filter: blur(9px);
}
.brand-mark {
  position: relative;
  width: 68px;
  height: 38px;
  margin: 0 auto 14px;
}
.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  top: 18px;
  width: 46px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
}
.brand-mark::before { left: 0; transform: rotate(26deg); }
.brand-mark::after { right: 0; transform: rotate(-26deg); }
.brand-mark span {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--blue);
  box-shadow: 0 0 18px rgba(96, 165, 250, .8);
}
.brand-mark span:nth-child(1) { left: 3px; top: 24px; }
.brand-mark span:nth-child(2) { left: 29px; top: 2px; }
.brand-mark span:nth-child(3) { right: 3px; top: 24px; }
.eyebrow {
  margin: 0 0 10px;
  color: #93c5fd;
  font-size: .84rem;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.transition-title {
  margin: 0;
  font-size: clamp(2.3rem, 5.5vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -.045em;
}
.lead {
  max-width: 760px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  line-height: 1.55;
}
.scope {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 20px auto 0;
}
.scope span {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.045);
  color: #e2e8f0;
  font-size: .88rem;
  font-weight: 650;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}
.button {
  min-width: 210px;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 800;
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-2px); }
.button:focus-visible { outline: 3px solid #bfdbfe; outline-offset: 4px; }
.button-primary {
  color: white;
  background: linear-gradient(135deg, var(--blue-strong), #3b82f6);
  box-shadow: 0 12px 28px rgba(37, 99, 235, .32);
}
.button-secondary {
  color: #e5eefc;
  border: 1px solid rgba(148, 163, 184, .48);
  background: rgba(15, 23, 42, .56);
}
.migration-note {
  max-width: 680px;
  margin: 20px auto 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: #94a3b8;
  font-size: .86rem;
  line-height: 1.5;
}
footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 22px;
  padding: 0 24px 16px;
  color: #94a3b8;
  font-size: .82rem;
}
@media (max-height: 760px) and (min-width: 621px) {
  .transition-shell { padding: 14px 0 10px; }
  .transition-card { padding: 22px 34px; }
  .brand-mark { height: 34px; margin-bottom: 8px; }
  .eyebrow { margin-bottom: 8px; }
  .transition-title { font-size: clamp(2.15rem, 4.6vw, 3.65rem); }
  .lead { margin-top: 14px; line-height: 1.45; }
  .scope { margin-top: 14px; }
  .actions { margin-top: 18px; }
  .migration-note { margin-top: 14px; padding-top: 12px; line-height: 1.4; }
  footer { padding-bottom: 10px; }
}
@media (max-width: 620px) {
  .transition-shell { width: min(100% - 20px, 1180px); padding: 12px 0 10px; }
  .transition-card { padding: 24px 18px; border-radius: 20px; }
  .brand-mark { margin-bottom: 10px; }
  .transition-title { font-size: clamp(2.05rem, 11vw, 3rem); }
  .lead { margin-top: 16px; }
  .scope { margin-top: 16px; }
  .actions { margin-top: 18px; }
  .button { width: 100%; min-width: 0; }
  .migration-note { margin-top: 16px; padding-top: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .button { transition: none; }
}