/* -- Nav ------------------------------------------------------------------ */
.nav {
  position: relative; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px;
  background: rgba(8,8,13,0.85);
  border-bottom: none;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.nav-brand {
  display: flex; align-items: center; gap: 8px;
  background: none; border: none;
  opacity: 1; transition: opacity 0.15s;
}
.nav-brand:hover { opacity: 0.8; }
.nav-logo {
  width: 28px; height: 28px; border-radius: 7px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--ac), var(--tl));
}
.nav-logo svg { stroke: #fff; }
.nav-brand span {
  color: var(--tx); font-family: var(--font-sans);
  font-weight: 700; font-size: 15px; letter-spacing: -0.02em;
}
.nav-tagline { font-family: var(--font-mono); font-size: 12px; color: var(--t2); }
@media (max-width: 540px) {
  .nav-brand span { font-size: 14px; }
  .nav-tagline { font-size: 11px; }
}

/* -- Main layout ---------------------------------------------------------- */
.main {
  position: relative; z-index: 10;
  display: flex; flex-direction: column; align-items: center;
  padding: 32px 16px 96px;
}
@media (max-width: 768px) {
  .main { padding-top: 48px; }
}

/* -- Hero ------------------------------------------------------------------ */
.hero {
  width: 100%; max-width: 576px;
  text-align: center; margin-bottom: 32px;
  transition: max-height 0.5s ease, opacity 0.4s ease, margin-bottom 0.5s ease;
  max-height: 400px; overflow: hidden;
}
.hero-collapsed {
  max-height: 0; opacity: 0;
  margin-bottom: 0 !important; pointer-events: none;
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px;
  color: var(--ac2); letter-spacing: 0.02em;
  background: var(--acbg); border: 1px solid var(--acbd);
  border-radius: 100px; padding: 5px 14px;
  margin-bottom: 12px;
}
.hero-eyebrow::before {
  content: ''; width: 6px; height: 6px;
  border-radius: 50%; flex-shrink: 0;
  background: var(--gn);
  box-shadow: 0 0 8px var(--gn);
}

.hero-title {
  font-size: clamp(32px, 6vw, 52px); font-weight: 300;
  color: var(--tx); letter-spacing: -0.025em;
  line-height: 1.375; margin-bottom: 8px;
}
.hero-title-gradient {
  background: linear-gradient(135deg, var(--ac2), var(--tl));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 18px; font-weight: 500;
  color: var(--tx); margin-bottom: 16px;
  letter-spacing: -0.01em;
}
@media (max-width: 540px) {
  .hero-tagline { font-size: 16px; margin-bottom: 12px; }
}

.hero-sub {
  color: var(--t2); font-size: 16px; font-weight: 300;
  max-width: 480px; margin: 0 auto; line-height: 1.6;
}
@media (max-width: 540px) {
  .hero-sub { font-size: 15px; }
}
.mobile-br { display: none; }
@media (max-width: 540px) {
  .mobile-br { display: inline; }
}
.hero-checks-link {
  background: none; border: none; padding: 0; cursor: pointer;
  font: inherit; color: var(--t2);
  text-decoration: underline; text-decoration-style: dotted;
  text-underline-offset: 3px;
  text-decoration-color: rgba(255,255,255,0.15);
  transition: text-decoration-color 0.15s;
}
.hero-checks-link:hover { text-decoration-color: rgba(255,255,255,0.4); }

.sm-hide { display: none; }
@media (min-width: 640px) { .sm-hide { display: inline; } }