:root {
  --blue: #2ea3f2;
  --blue-dark: #1f8bd1;
  --text-dark: #333;
  --text-muted: #666;
  --border: #e2e2e2;
  --white: #ffffff;
  --bg-soft: #f7fafd;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.7em;
  color: var(--text-muted);
  background: var(--white);
}

a { color: var(--blue); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--blue-dark); }

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', 'Open Sans', sans-serif;
  color: var(--text-dark);
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 0.6em;
}

.container {
  width: 80%;
  max-width: 1080px;
  margin: 0 auto;
}

/* Header */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 0 7px rgba(0, 0, 0, 0.07);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.logo {
  font-family: 'Poppins', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.logo-mark {
  display: inline-block;
  background: var(--blue);
  color: var(--white);
  padding: 4px 8px;
  border-radius: 3px;
  margin-right: 2px;
}

.logo-text { color: var(--text-dark); }

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 36px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--text-dark);
  font-weight: 600;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #f7fafd 0%, #eaf4fc 100%);
  padding: 110px 0 120px;
  text-align: center;
}

.hero-inner { max-width: 820px; margin: 0 auto; }

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 24px;
  line-height: 1.2;
}

.hero .accent { color: var(--blue); }

.hero .subheadline {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.why-aiq {
  background: var(--white);
  padding: 90px 0;
  border-bottom: 1px solid var(--border);
}

.why-aiq-inner {
  max-width: 780px;
  text-align: center;
}

.why-aiq h2 {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 28px;
}

.why-aiq .accent { color: var(--blue); }

.why-aiq p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0 auto 18px;
}

.why-aiq .why-lede {
  font-size: 18px;
  color: var(--text-dark);
}

.why-aiq strong { color: var(--text-dark); font-weight: 600; }

.trust-bar {
  margin: 36px auto 0;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: #6b7784;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: 'Poppins', sans-serif;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 3px;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}

.btn-primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-dark);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
}

/* Footer */
.site-footer {
  background: #2a2e33;
  color: #b8bcc2;
  padding: 60px 0 30px;
  margin-top: 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}

.footer-brand .logo-text { color: var(--white); }
.footer-brand p {
  margin: 12px 0 0;
  color: #9ea3a9;
  font-size: 14px;
}

.footer-nav ul {
  list-style: none;
  display: flex;
  gap: 32px;
  margin: 0;
  padding: 0;
}

.footer-nav a {
  color: #b8bcc2;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.footer-nav a:hover { color: var(--blue); }

.footer-copy {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid #3a3e44;
  width: 100%;
  font-size: 12px;
  color: #7a7f85;
}

.nav-cta {
  background: var(--blue);
  color: var(--white) !important;
  padding: 8px 18px !important;
  border-radius: 3px;
  border-bottom: none !important;
}

.nav-cta:hover,
.nav-cta.active {
  background: var(--blue-dark);
  color: var(--white) !important;
  border-bottom: none !important;
}

/* Interview page */
.interview {
  background: linear-gradient(135deg, #f7fafd 0%, #eaf4fc 100%);
  padding: 80px 0 100px;
  text-align: center;
  min-height: calc(100vh - 260px);
}

.interview-inner { max-width: 820px; margin: 0 auto; }

.interview h1 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
}

.interview .accent { color: var(--blue); }

.interview .subheadline {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 40px;
}

.video-frame {
  background: #0e1116;
  border-radius: 8px;
  box-shadow: 0 14px 40px rgba(46, 163, 242, 0.18), 0 2px 8px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  max-width: 720px;
  margin: 0 auto 28px;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.interview-controls {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.interview-controls .btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.status-line {
  font-size: 14px;
  color: var(--text-muted);
  font-style: italic;
  margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
  .container { width: 90%; }
  .header-inner { flex-direction: column; gap: 14px; padding: 16px 0; }
  .main-nav ul { gap: 20px; }
  .hero { padding: 70px 0 80px; }
  .hero h1 { font-size: 32px; }
  .hero .subheadline { font-size: 15px; }
  .btn { padding: 12px 24px; }
}