/* Orbital — Observability Platform Demo
   Style: Linear/Vercel/Stripe-inspired tech, deep-space + plasma gradient */

:root {
  --bg: #050507;
  --bg-elev: #0B0B12;
  --bg-card: #11121C;
  --line: #1E1F2D;
  --text: #F5F5FA;
  --text-mute: #8B8FA8;
  --text-dim: #5A5E78;
  --plasma-a: #00E5FF;
  --plasma-b: #FF2DCD;
  --plasma-c: #FFD600;
  --accent: #6E5CFF;
  --green: #00D68F;
  --warn: #FF8A50;
  --radius: 12px;
  --radius-lg: 20px;
  --container: 1240px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.mono { font-family: 'JetBrains Mono', 'SF Mono', Consolas, monospace; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* === NAV === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 0;
  background: rgba(5, 5, 7, 0.6);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-inner { max-width: var(--container); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; letter-spacing: -0.01em; }
.nav-logo-mark {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: conic-gradient(from 220deg at 50% 50%, var(--plasma-a), var(--plasma-b), var(--plasma-c), var(--plasma-a));
  position: relative;
}
.nav-logo-mark::after {
  content: ""; position: absolute; inset: 5px;
  background: var(--bg);
  border-radius: 5px;
}
.nav-logo-mark::before {
  content: ""; position: absolute; inset: 9px;
  background: conic-gradient(from 220deg at 50% 50%, var(--plasma-a), var(--plasma-b), var(--plasma-c), var(--plasma-a));
  border-radius: 3px;
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { font-size: 14px; color: var(--text-mute); transition: color 0.2s; font-weight: 500; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 12px; align-items: center; }
.btn {
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.18s ease;
  border: 1px solid transparent;
}
.btn-ghost { color: var(--text-mute); }
.btn-ghost:hover { color: var(--text); background: var(--bg-card); }
.btn-primary {
  background: linear-gradient(135deg, var(--plasma-a) 0%, var(--accent) 60%, var(--plasma-b) 100%);
  color: #000;
  font-weight: 600;
  box-shadow: 0 8px 24px -8px rgba(110, 92, 255, 0.5);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 32px -8px rgba(110, 92, 255, 0.7); }
.btn-secondary {
  border-color: var(--line);
  color: var(--text);
  background: var(--bg-card);
}
.btn-secondary:hover { border-color: var(--text-dim); background: var(--bg-elev); }
.btn-large { padding: 14px 22px; font-size: 15px; }

.nav-mobile-toggle { display: none; }

@media (max-width: 880px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-mobile-toggle { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 8px; }
  .nav-mobile-toggle span, .nav-mobile-toggle::before, .nav-mobile-toggle::after {
    content: ""; display: block; width: 16px; height: 1.5px; background: var(--text); border-radius: 2px;
  }
  .nav-mobile-toggle { flex-direction: column; gap: 4px; }
}

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 140px 24px 80px;
  text-align: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-mesh {
  position: absolute;
  inset: -10%;
  background:
    radial-gradient(circle at 20% 30%, rgba(0, 229, 255, 0.15), transparent 35%),
    radial-gradient(circle at 80% 20%, rgba(255, 45, 205, 0.18), transparent 40%),
    radial-gradient(circle at 60% 80%, rgba(110, 92, 255, 0.18), transparent 45%),
    radial-gradient(circle at 30% 90%, rgba(255, 214, 0, 0.08), transparent 40%);
  filter: blur(40px);
  animation: meshDrift 20s ease-in-out infinite alternate;
}
@keyframes meshDrift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-3%, 4%) scale(1.05); }
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.hero-content { position: relative; z-index: 2; max-width: 880px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 100px;
  font-size: 12px;
  color: var(--text-mute);
  margin-bottom: 28px;
  background: rgba(11, 11, 18, 0.6);
  backdrop-filter: blur(8px);
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); }
.hero h1 {
  font-size: clamp(40px, 6.5vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 700;
  margin-bottom: 24px;
}
.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--plasma-a) 0%, var(--text) 40%, var(--plasma-b) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--text-mute);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.55;
}
.hero-ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* === LOGOS STRIP === */
.logos {
  padding: 80px 0 60px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev);
  overflow: hidden;
}
.logos-label { text-align: center; font-size: 12px; color: var(--text-dim); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 32px; }
.logos-marquee { display: flex; gap: 80px; animation: marquee 35s linear infinite; }
.logos-marquee .logo-item {
  font-family: 'JetBrains Mono', monospace;
  font-size: 22px;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity 0.2s, color 0.2s;
}
.logos-marquee .logo-item:hover { opacity: 1; color: var(--text); }
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* === SECTION === */
.section { padding: 120px 0; position: relative; }
.section-narrow { max-width: 880px; margin: 0 auto; }
.section-label {
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 100px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--plasma-a);
  margin-bottom: 20px;
  background: rgba(0, 229, 255, 0.04);
}
.section h2 {
  font-size: clamp(32px, 4.5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin-bottom: 20px;
}
.section-sub {
  font-size: 18px;
  color: var(--text-mute);
  max-width: 600px;
  margin-bottom: 60px;
  line-height: 1.55;
}
.section-head { text-align: center; max-width: 720px; margin: 0 auto 80px; }
.section-head .section-sub { margin: 0 auto; }

/* === FEATURES GRID === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.feature-card {
  background: var(--bg);
  padding: 40px 32px;
  position: relative;
  transition: background 0.3s;
}
.feature-card:hover { background: var(--bg-elev); }
.feature-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(110, 92, 255, 0.1));
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
  color: var(--plasma-a);
}
.feature-card h3 { font-size: 18px; margin-bottom: 10px; font-weight: 600; letter-spacing: -0.01em; }
.feature-card p { color: var(--text-mute); font-size: 14.5px; line-height: 1.6; }

@media (max-width: 880px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* === LIVE DASHBOARD === */
.dashboard {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-elev) 50%, var(--bg) 100%);
  padding: 100px 0;
}
.dashboard-frame {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  box-shadow: 0 40px 80px -40px rgba(110, 92, 255, 0.4), 0 0 0 1px rgba(110, 92, 255, 0.08);
}
.dashboard-toolbar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line);
}
.dashboard-toolbar .dot { width: 12px; height: 12px; border-radius: 50%; }
.dashboard-toolbar .dot.r { background: #FF5F57; }
.dashboard-toolbar .dot.y { background: #FEBC2E; }
.dashboard-toolbar .dot.g { background: #28C840; }
.dashboard-toolbar .url {
  margin-left: 20px;
  padding: 5px 12px;
  background: var(--bg);
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-dim);
  flex: 1;
  text-align: center;
  max-width: 360px;
}
.dashboard-body {
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 16px;
}
.metric-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.metric-label { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 8px; }
.metric-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.metric-trend { font-size: 12px; display: flex; align-items: center; gap: 4px; }
.metric-trend.up { color: var(--green); }
.metric-trend.down { color: var(--warn); }

.dashboard-chart {
  grid-column: span 4;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 4px;
  height: 320px;
  position: relative;
}
.chart-svg { width: 100%; height: 100%; }
.chart-line { fill: none; stroke: url(#chart-gradient); stroke-width: 2.5; }
.chart-area { fill: url(#chart-area-gradient); }
.chart-grid line { stroke: var(--line); stroke-width: 1; }
.chart-label { fill: var(--text-dim); font-size: 11px; font-family: 'JetBrains Mono', monospace; }

@media (max-width: 880px) {
  .dashboard-body { grid-template-columns: 1fr 1fr; padding: 20px; }
  .dashboard-chart { grid-column: span 2; }
}

/* === CODE BLOCK === */
.code-section { padding: 120px 0; }
.code-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.code-frame {
  background: #0a0a12;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.5);
}
.code-frame .toolbar {
  background: #08080F;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-dim);
  display: flex;
  gap: 18px;
}
.code-frame .toolbar .filename { color: var(--text-mute); }
.code-frame pre {
  padding: 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text);
  overflow-x: auto;
}
.tk-key { color: #FF6B9D; }
.tk-fn  { color: #00E5FF; }
.tk-str { color: #FFD600; }
.tk-num { color: #B8E96B; }
.tk-com { color: var(--text-dim); }
.tk-var { color: #C9A9FF; }

@media (max-width: 880px) {
  .code-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* === PRICING === */
.pricing { padding: 120px 0; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.pricing-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.pricing-card.popular {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(110, 92, 255, 0.08), var(--bg-elev) 60%);
  box-shadow: 0 30px 80px -30px rgba(110, 92, 255, 0.5);
}
.pricing-popular-tag {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  padding: 5px 12px;
  background: var(--accent);
  color: var(--text);
  font-size: 11px;
  border-radius: 100px;
  letter-spacing: 0.05em;
  font-weight: 500;
}
.pricing-name { font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 10px; }
.pricing-price { font-family: 'JetBrains Mono', monospace; font-size: 44px; font-weight: 600; letter-spacing: -0.025em; }
.pricing-period { font-size: 14px; color: var(--text-mute); margin-left: 4px; font-family: 'Inter', sans-serif; font-weight: 400; }
.pricing-desc { color: var(--text-mute); margin: 14px 0 24px; font-size: 14px; line-height: 1.6; min-height: 60px; }
.pricing-features { list-style: none; margin-bottom: 28px; flex: 1; }
.pricing-features li {
  font-size: 14px;
  color: var(--text-mute);
  padding: 8px 0;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.pricing-features li::before {
  content: ""; width: 16px; height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2300E5FF' stroke-width='2.5'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
  background-size: contain;
  flex-shrink: 0; margin-top: 3px;
}

@media (max-width: 880px) { .pricing-grid { grid-template-columns: 1fr; } }

/* === TESTIMONIALS === */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.testimonial-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
}
.testimonial-card .quote-mark {
  font-family: serif;
  font-size: 64px;
  line-height: 0.7;
  color: var(--plasma-a);
  margin-bottom: 8px;
  opacity: 0.4;
}
.testimonial-quote { font-size: 16px; line-height: 1.65; color: var(--text); margin-bottom: 24px; }
.testimonial-author { display: flex; gap: 12px; align-items: center; }
.testimonial-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--plasma-a), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-weight: 600;
  color: #000;
  font-size: 14px;
}
.testimonial-name { font-size: 14px; font-weight: 600; }
.testimonial-role { font-size: 12px; color: var(--text-dim); }

@media (max-width: 880px) { .testimonials-grid { grid-template-columns: 1fr; } }

/* === BIG CTA === */
.cta-block {
  text-align: center;
  padding: 100px 24px;
  background:
    radial-gradient(ellipse 600px 400px at 50% 0%, rgba(110, 92, 255, 0.18), transparent 70%),
    var(--bg);
  border-top: 1px solid var(--line);
}
.cta-block h2 { font-size: clamp(36px, 5vw, 64px); line-height: 1.05; letter-spacing: -0.03em; margin-bottom: 18px; }
.cta-block p { color: var(--text-mute); font-size: 18px; max-width: 540px; margin: 0 auto 36px; }
.cta-form { display: flex; gap: 8px; max-width: 460px; margin: 0 auto; }
.cta-form input {
  flex: 1;
  padding: 14px 18px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
}
.cta-form input::placeholder { color: var(--text-dim); }
.cta-form input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px rgba(110, 92, 255, 0.15); }

/* === FOOTER === */
footer {
  border-top: 1px solid var(--line);
  padding: 60px 0 30px;
  background: var(--bg);
}
.footer-inner { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer-brand p { color: var(--text-mute); font-size: 14px; line-height: 1.6; max-width: 280px; margin-top: 12px; }
.footer-col h4 { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 16px; }
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-mute);
  padding: 5px 0;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px;
  color: var(--text-dim);
}

@media (max-width: 880px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; }
}

/* === REVEAL ANIMATION === */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* === CONTACT FORM (contact.html) === */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; padding: 80px 0; align-items: start; }
.contact-form-block { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 12px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 8px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 14.5px;
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px rgba(110, 92, 255, 0.15);
}
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; padding: 40px 0; } }

/* === CASE STUDY (customers.html) === */
.case-studies-grid { display: grid; grid-template-columns: 1fr; gap: 24px; margin-top: 40px; }
.case-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  align-items: center;
}
.case-stat { text-align: center; padding: 32px; background: var(--bg); border-radius: var(--radius); border: 1px solid var(--line); }
.case-stat-num { font-family: 'JetBrains Mono', monospace; font-size: 56px; font-weight: 600; letter-spacing: -0.025em; background: linear-gradient(135deg, var(--plasma-a), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.case-stat-lbl { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); margin-top: 6px; }
.case-card h3 { font-size: 28px; margin-bottom: 14px; letter-spacing: -0.02em; }
.case-card .case-quote { color: var(--text-mute); font-size: 16px; line-height: 1.65; margin-bottom: 18px; }
.case-card .case-author { font-size: 13px; color: var(--text-dim); }
@media (max-width: 880px) { .case-card { grid-template-columns: 1fr; gap: 24px; padding: 28px; } }

/* === FAQ (pricing.html) === */
.faq-list { max-width: 760px; margin: 60px auto 0; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%;
  text-align: left;
  padding: 20px 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  letter-spacing: -0.01em;
}
.faq-q .faq-icon { color: var(--text-dim); font-size: 22px; transition: transform 0.3s; line-height: 0.8; }
.faq-item.open .faq-q .faq-icon { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; color: var(--text-mute); font-size: 15px; line-height: 1.65; }
.faq-item.open .faq-a { max-height: 200px; padding-bottom: 20px; }

/* === PAGE HEADER (sub-pages) === */
.page-header {
  padding: 180px 24px 80px;
  text-align: center;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 400px 300px at 20% 100%, rgba(0, 229, 255, 0.1), transparent 70%),
    radial-gradient(ellipse 400px 300px at 80% 100%, rgba(255, 45, 205, 0.1), transparent 70%);
  pointer-events: none;
}
.page-header h1 {
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
}
.page-header p { font-size: 18px; color: var(--text-mute); max-width: 580px; margin: 0 auto; position: relative; }

/* === DEEP-FEATURE (product.html) === */
.deep-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--line);
}
.deep-feature:nth-child(even) { direction: rtl; }
.deep-feature:nth-child(even) > * { direction: ltr; }
.deep-feature h2 { font-size: 38px; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 16px; }
.deep-feature p { color: var(--text-mute); font-size: 16px; line-height: 1.65; margin-bottom: 18px; }
.deep-feature .visual {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}
@media (max-width: 880px) {
  .deep-feature { grid-template-columns: 1fr; gap: 40px; padding: 40px 0; }
  .deep-feature:nth-child(even) { direction: ltr; }
}