:root {
  --bg: #09111e;
  --text: #f3f6fb;
  --muted: #9cadc5;
  --line: rgba(243, 246, 251, 0.14);
  --panel: rgba(13, 24, 42, 0.75);
  --panel-solid: #0f1b30;
  --highlight: #19c5a4;
  --highlight-2: #ff8f3f;
  --button-dark: #111f35;
  --radius-lg: 26px;
  --radius-md: 16px;
  --radius-sm: 999px;
  --shadow-soft: 0 18px 80px rgba(0, 0, 0, 0.35);
  --max-width: 1120px;

  /* Modular type scale — Golden Ratio ×1.618 */
  --text-xs:      max(0.8125rem, 0.618rem);
  --text-sm:      max(0.9375rem, 0.764rem);
  --text-base:    1rem;
  --text-md:      1.236rem;
  --text-lg:      1.618rem;
  --text-xl:      2.058rem;
  --text-2xl:     2.618rem;
  --text-3xl:     4.236rem;
  --text-display: 6.854rem;
  --leading-tight:  1.1;
  --leading-snug:   1.25;
  --leading-normal: 1.6;
  --leading-loose:  1.8;

  /* Fibonacci spacing (8px base) */
  --space-1: 8px;  --space-2: 13px; --space-3: 21px;
  --space-4: 34px; --space-5: 55px; --space-6: 89px; --space-7: 144px;

  /* Semantic status tokens */
  --success: #1a7f5a; --success-bg: #e6f5ef;
  --warning: #b45309; --warning-bg: #fef3c7;
  --error:   #b91c1c; --error-bg:   #fee2e2;

  /* Motion tokens (§14.1) */
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 500ms;
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce:  cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 0%, rgba(25, 197, 164, 0.2), transparent 35%),
    radial-gradient(circle at 80% 16%, rgba(255, 143, 63, 0.17), transparent 28%),
    linear-gradient(165deg, #060d17 10%, #0a1628 54%, #0d1d36 100%);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Syne", sans-serif;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--highlight);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
:focus:not(:focus-visible) { outline: none; }

/* Skip-nav (§9.5) */
.skip-nav {
  position: absolute;
  top: -100%;
  left: var(--space-3);
  padding: 10px 20px;
  background: var(--highlight);
  color: #000;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.82rem;
  z-index: 9999;
  transition: top var(--duration-fast) var(--ease-default);
}
.skip-nav:focus { top: 12px; }

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image: radial-gradient(rgba(255, 255, 255, 0.2) 0.5px, transparent 0.5px);
  background-size: 3px 3px;
  mix-blend-mode: soft-light;
  z-index: -3;
}

.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(48px);
  z-index: -2;
}

.orb-one {
  width: 320px;
  height: 320px;
  background: rgba(25, 197, 164, 0.32);
  top: 10%;
  left: 8%;
}

.orb-two {
  width: 360px;
  height: 360px;
  background: rgba(255, 143, 63, 0.25);
  right: 6%;
  bottom: 10%;
}

.site-header,
main,
.site-footer {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 12px;
  z-index: 20;
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(9, 17, 30, 0.78);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  font-size: 0.75rem;
  background: linear-gradient(150deg, var(--highlight), #2de2c1);
  color: #051019;
}

.brand-text {
  font-family: "Syne", sans-serif;
  font-size: 1.02rem;
}

.site-nav {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.site-nav a {
  transition: color 180ms ease;
}

.site-nav a:hover {
  color: var(--text);
}

main {
  display: grid;
  gap: 20px;
  margin-top: 22px;
}

.hero,
.logo-strip,
.features,
.testimonial,
.pricing,
.final-cta,
.site-footer {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.hero {
  display: grid;
  gap: 24px;
  padding: 34px;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--highlight);
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(2.4rem, 7vw, 5.8rem);
  line-height: 0.95;
}

/* §3.6 — Type as image: key phrase in accent colour */
.hero-accent {
  color: var(--highlight);
  font-style: italic;
}

.hero-copy {
  margin: 0;
  max-width: 62ch;
  line-height: 1.72;
  font-size: 1.04rem;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 170ms ease, border-color 170ms ease, background 170ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
.button:active {
  transform: translateY(0);
  transition-duration: 60ms;
}

.button-primary {
  color: #04111a;
  background: linear-gradient(130deg, var(--highlight), #3de7c8);
}

.button-ghost {
  color: var(--text);
  border-color: var(--line);
  background: rgba(12, 23, 41, 0.7);
}

.button-nav {
  color: #04111a;
  min-height: 40px;
  padding: 0 14px;
  font-size: 0.92rem;
  background: linear-gradient(130deg, #ffca8f, var(--highlight-2));
}

.hero-metrics {
  margin: 4px 0 0;
  padding: 16px 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  list-style: none;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(9, 17, 30, 0.92), rgba(13, 28, 50, 0.8));
}

.hero-metrics li {
  display: grid;
  gap: 2px;
}

.hero-metrics strong {
  font-family: "Syne", sans-serif;
  font-size: 1.45rem;
}

.hero-metrics span {
  font-size: 0.9rem;
  color: var(--muted);
}

.logo-strip {
  padding: 22px;
}

.logo-strip p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.9rem;
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.logo-grid span {
  min-height: 44px;
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(15, 27, 48, 0.82);
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 0.78rem;
  color: #c0cde2;
}

.features,
.pricing,
.final-cta {
  padding: 30px;
}

.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
}

.section-head h2 {
  max-width: 22ch;
  font-size: clamp(1.8rem, 4vw, 2.9rem);
  line-height: 1.02;
}

.feature-grid,
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card,
.price-card {
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--panel-solid);
}

.card h3,
.plan-name {
  margin-bottom: 10px;
}

.card p,
.price-card li,
.plan-price {
  margin: 0;
  line-height: 1.68;
  color: var(--muted);
}

.testimonial {
  padding: 30px;
  background: linear-gradient(145deg, rgba(11, 24, 44, 0.92), rgba(20, 34, 56, 0.8));
}

blockquote {
  margin: 0;
  max-width: 58ch;
  font-family: "Syne", sans-serif;
  line-height: 1.3;
  font-size: clamp(1.5rem, 3.8vw, 2.5rem);
}

.quote-author {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.pricing-head {
  margin-bottom: 24px;
}

.billing-toggle {
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(8, 16, 29, 0.8);
}

.toggle-pill {
  border: 0;
  min-height: 34px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font-weight: 700;
  cursor: pointer;
}

.toggle-pill.is-active {
  color: var(--text);
  background: rgba(26, 43, 68, 0.9);
}

.save-badge {
  padding: 0 10px;
  min-height: 26px;
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: #032118;
  background: linear-gradient(120deg, #80f1d9, #3de7c8);
  font-size: 0.74rem;
  font-weight: 800;
}

.plan-name {
  font-size: 1.05rem;
  color: var(--text);
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 14px;
}

.currency {
  font-weight: 700;
  color: var(--text);
}

.amount {
  font-family: "Syne", sans-serif;
  color: var(--text);
  font-size: 2.2rem;
}

.period {
  font-size: 0.9rem;
}

.price-card ul {
  margin: 0 0 20px;
  padding-left: 16px;
  display: grid;
  gap: 8px;
}

.price-card.featured {
  border-color: rgba(61, 231, 200, 0.58);
  background: linear-gradient(150deg, rgba(13, 27, 45, 0.95), rgba(10, 33, 40, 0.8));
}

.final-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: linear-gradient(150deg, rgba(11, 24, 44, 0.95), rgba(18, 35, 59, 0.86));
}

.final-cta h2 {
  max-width: 24ch;
  font-size: clamp(1.6rem, 4vw, 2.8rem);
}

.site-footer {
  margin: 20px auto 22px;
  padding: 16px 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  animation: section-reveal 620ms ease forwards;
}

.reveal:nth-of-type(2) {
  animation-delay: 90ms;
}

.reveal:nth-of-type(3) {
  animation-delay: 160ms;
}

.reveal:nth-of-type(4) {
  animation-delay: 240ms;
}

.reveal:nth-of-type(5) {
  animation-delay: 320ms;
}

.reveal:nth-of-type(6) {
  animation-delay: 390ms;
}

@keyframes section-reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .site-nav {
    display: none;
  }

  .hero-metrics,
  .logo-grid,
  .feature-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-header,
  .features,
  .pricing,
  .final-cta,
  .testimonial,
  .hero,
  .logo-strip,
  .site-footer {
    padding: 18px;
  }

  .site-header,
  .final-cta,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-header,
  main,
  .site-footer {
    width: min(calc(100% - 18px), var(--max-width));
  }

  .hero h1 {
    max-width: 13ch;
    line-height: 1.02;
  }

  .hero-copy {
    font-size: 0.98rem;
    line-height: 1.65;
  }

  .button,
  .toggle-pill {
    min-height: 42px;
  }

  .save-badge {
    min-height: 30px;
  }

  .final-cta .button,
  .hero-actions .button {
    width: 100%;
  }

  .plan-price {
    margin-bottom: 10px;
  }
}

@media (max-width: 420px) {
  .site-header,
  .features,
  .pricing,
  .final-cta,
  .testimonial,
  .hero,
  .logo-strip,
  .site-footer {
    padding: 14px;
  }

  .hero h1 {
    font-size: clamp(2rem, 10.6vw, 2.8rem);
  }

  .section-head h2,
  .final-cta h2 {
    font-size: clamp(1.35rem, 7.3vw, 1.85rem);
  }
}


/* ============================================================
   LIGHT MODE (§14.3 — respect OS colour preference)
   ============================================================ */
@media (prefers-color-scheme: light) {
  :root {
    --bg:          #f0f6ff;
    --text:        #0a1628;
    --muted:       #4a6a8a;
    --line:        rgba(10, 22, 40, 0.12);
    --panel:       rgba(255, 255, 255, 0.85);
    --panel-solid: #ffffff;
    --button-dark: #e0eaf7;
  }
  body {
    background:
      radial-gradient(circle at 15% 0%, rgba(25, 197, 164, 0.12), transparent 35%),
      radial-gradient(circle at 80% 16%, rgba(255, 143, 63, 0.1), transparent 28%),
      linear-gradient(165deg, #f0f6ff 10%, #e4eefc 54%, #d8e8f8 100%);
  }
}

/* ============================================================
   REDUCED MOTION (§9.7 — respect vestibular/motion sensitivity)
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}