/* ============================================================================
   EdgeNet — Landing styles
   Sections:
   1. Tokens (colors, spacing, radius, typography)
   2. Reset & base
   3. Layout primitives (container, sections)
   4. Buttons, pills, eyebrows
   5. Nav + mobile menu
   6. Hero (background, mock dashboard)
   7. Trust bar
   8. Features grid
   9. How it works (steps)
   10. Architecture diagram
   11. Stats counters
   12. Use cases
   13. Pricing
   14. FAQ accordion
   15. CTA card
   16. Footer
   17. Reveal animations + reduced motion
   18. Responsive breakpoints (>= 1440 / 1024 / 768 / 360)
   ============================================================================ */

/* ----------------------------------------------------------------------------
   1. TOKENS
   ---------------------------------------------------------------------------- */
:root {
  /* Brand */
  --brand-1: #6366f1;        /* indigo-500 */
  --brand-2: #8b5cf6;        /* violet-500 */
  --brand-3: #06b6d4;        /* cyan-500 */
  --brand-deep: #4f46e5;

  --gradient-brand: linear-gradient(135deg, #6366f1 0%, #8b5cf6 55%, #06b6d4 100%);
  --gradient-brand-soft: linear-gradient(135deg, rgba(99,102,241,.18), rgba(139,92,246,.16) 55%, rgba(6,182,212,.14));

  /* Type */
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Spacing scale */
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-pill: 999px;

  --container: 1200px;
  --container-narrow: 820px;

  --ease: cubic-bezier(.16, 1, .3, 1);
  --transition: 250ms var(--ease);
}

/* Dark (default) */
:root,
[data-theme="dark"] {
  color-scheme: dark;

  --bg: #0a0b14;
  --bg-elev: #11131f;
  --bg-elev-2: #161a2b;
  --bg-soft: rgba(255,255,255,0.02);

  --surface: rgba(255,255,255,0.035);
  --surface-strong: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);

  --text: #e7e9f3;
  --text-muted: #a4a8bf;
  --text-dim: #7c8099;

  --nav-bg: rgba(10, 11, 20, 0.72);
  --shadow-1: 0 1px 0 rgba(255,255,255,0.04) inset, 0 8px 24px -12px rgba(0,0,0,0.6);
  --shadow-2: 0 20px 60px -24px rgba(0,0,0,0.7);
  --glow: 0 0 80px -10px rgba(139,92,246,0.45);
}

/* Light theme */
[data-theme="light"] {
  color-scheme: light;

  --bg: #f9faff;
  --bg-elev: #ffffff;
  --bg-elev-2: #f3f4fb;
  --bg-soft: rgba(15, 17, 38, 0.02);

  --surface: rgba(15, 17, 38, 0.025);
  --surface-strong: rgba(15, 17, 38, 0.05);
  --border: rgba(15, 17, 38, 0.08);
  --border-strong: rgba(15, 17, 38, 0.14);

  --text: #0f1126;
  --text-muted: #4b5067;
  --text-dim: #6c7290;

  --nav-bg: rgba(249, 250, 255, 0.78);
  --shadow-1: 0 1px 0 rgba(15,17,38,0.04) inset, 0 8px 24px -16px rgba(15,17,38,0.18);
  --shadow-2: 0 24px 60px -28px rgba(15,17,38,0.22);
  --glow: 0 0 80px -10px rgba(139,92,246,0.25);
}

/* ----------------------------------------------------------------------------
   2. RESET / BASE
   ---------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand-1); }

ul, ol { padding: 0; list-style: none; }

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.1em 0.35em;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: 6px;
}

:focus-visible {
  outline: 2px solid var(--brand-1);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--brand-1);
  color: #fff;
  padding: 10px 14px;
  border-radius: 8px;
  z-index: 9999;
}
.skip-link:focus { left: 1rem; top: 1rem; }

::selection {
  background: rgba(139, 92, 246, 0.35);
  color: #fff;
}

/* ----------------------------------------------------------------------------
   3. LAYOUT
   ---------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container--narrow { max-width: var(--container-narrow); }

.section {
  padding: var(--space-24) 0;
  position: relative;
}
.section--alt {
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(139,92,246,0.06), transparent 60%),
    var(--bg-elev);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] .section--alt {
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(139,92,246,0.08), transparent 60%),
    var(--bg-elev-2);
}

.section__head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-16);
}
.section__title {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-top: var(--space-3);
}
.section__lede {
  margin-top: var(--space-4);
  color: var(--text-muted);
  font-size: clamp(1rem, 1.3vw, 1.075rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand-soft);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
}

.grad-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}

/* ----------------------------------------------------------------------------
   4. BUTTONS / PILLS
   ---------------------------------------------------------------------------- */
.btn {
  --btn-bg: var(--surface);
  --btn-border: var(--border-strong);
  --btn-color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-md);
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--btn-color);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), color var(--transition);
  white-space: nowrap;
  position: relative;
  isolation: isolate;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--sm { padding: 0.5rem 0.95rem; font-size: 0.875rem; border-radius: 10px; }
.btn--lg { padding: 0.85rem 1.4rem; font-size: 1rem; border-radius: 14px; }
.btn--full { width: 100%; }

.btn--primary {
  --btn-bg: var(--gradient-brand);
  --btn-border: transparent;
  --btn-color: #fff;
  background: var(--gradient-brand);
  box-shadow: 0 10px 30px -12px rgba(99,102,241,0.55), inset 0 1px 0 rgba(255,255,255,0.18);
}
.btn--primary:hover {
  box-shadow: 0 16px 36px -14px rgba(99,102,241,0.75), inset 0 1px 0 rgba(255,255,255,0.22);
  color: #fff;
}

.btn--ghost {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
  backdrop-filter: blur(12px);
}
.btn--ghost:hover {
  background: var(--surface-strong);
  border-color: var(--brand-1);
  color: var(--text);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  transition: var(--transition);
}
.icon-btn:hover { background: var(--surface-strong); border-color: var(--border-strong); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.pill--ok { color: #22c55e; border-color: rgba(34,197,94,0.25); background: rgba(34,197,94,0.08); }
.pill__dot { width: 6px; height: 6px; border-radius: 999px; background: currentColor; box-shadow: 0 0 8px currentColor; }

/* ----------------------------------------------------------------------------
   5. NAV
   ---------------------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}
.nav.is-stuck {
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
  color: var(--text);
}
.brand:hover { color: var(--text); }
.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 6px 16px rgba(99,102,241,0.35));
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex: 1;
  justify-content: center;
}
.nav__links a {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 500;
  padding: 6px 2px;
  position: relative;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { transform: scaleX(1); }

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

.nav__burger { display: none; }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6) var(--space-6);
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
}
.mobile-menu a {
  padding: 0.7rem 0.8rem;
  border-radius: 10px;
  color: var(--text);
  font-weight: 500;
}
.mobile-menu a:hover { background: var(--surface); }
.mobile-menu .btn { margin-top: var(--space-2); justify-content: center; }
.mobile-menu.is-open { display: flex; }

/* ----------------------------------------------------------------------------
   6. HERO
   ---------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(4rem, 6vw, 6rem);
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: -1px;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 75%);
  opacity: 0.7;
}
[data-theme="light"] .hero__grid {
  background-image:
    linear-gradient(to right, rgba(15,17,38,0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15,17,38,0.08) 1px, transparent 1px);
}

.hero__blob {
  position: absolute;
  width: 540px; height: 540px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
  animation: float 14s ease-in-out infinite;
}
.hero__blob--1 {
  background: radial-gradient(circle, #6366f1 0%, transparent 60%);
  top: -120px; left: -120px;
}
.hero__blob--2 {
  background: radial-gradient(circle, #8b5cf6 0%, transparent 60%);
  top: 0; right: -160px;
  animation-delay: -4s;
}
.hero__blob--3 {
  background: radial-gradient(circle, #06b6d4 0%, transparent 60%);
  bottom: -200px; left: 30%;
  animation-delay: -7s;
  opacity: 0.4;
}
[data-theme="light"] .hero__blob { opacity: 0.32; }

@keyframes float {
  0%, 100% { transform: translate3d(0,0,0) scale(1); }
  50% { transform: translate3d(0,-30px,0) scale(1.04); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__blob { animation: none; }
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-6);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 6px 12px 6px 10px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}
.hero__eyebrow:hover { color: var(--text); border-color: var(--brand-1); }
.hero__eyebrow-dot {
  display: inline-block;
  width: 6px; height: 6px; border-radius: 999px;
  background: var(--brand-3);
  box-shadow: 0 0 8px var(--brand-3);
}

.hero__title {
  font-size: clamp(2.25rem, 5.8vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.05;
  max-width: 980px;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  color: var(--text-muted);
  max-width: 720px;
  line-height: 1.6;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-top: var(--space-2);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: var(--space-2);
}
.hero__meta li {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}
.hero__meta svg { color: var(--brand-1); }

/* Hero mock dashboard */
.hero__mock {
  width: 100%;
  max-width: 1100px;
  margin-top: var(--space-12);
  position: relative;
}
.hero__glow {
  position: absolute;
  inset: 10% 8% -10%;
  background: var(--gradient-brand);
  filter: blur(80px);
  opacity: 0.22;
  z-index: -1;
  border-radius: 100%;
}

.mock {
  width: 100%;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-2);
  text-align: left;
}
.mock__bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px 16px;
  background: var(--bg-elev-2);
  border-bottom: 1px solid var(--border);
}
.mock__dot { width: 11px; height: 11px; border-radius: 999px; }
.mock__dot--r { background: #ef4444; }
.mock__dot--y { background: #f59e0b; }
.mock__dot--g { background: #22c55e; }
.mock__url {
  margin-left: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  padding: 3px 10px;
  background: var(--surface);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.mock__body {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 380px;
}

.mock__side {
  border-right: 1px solid var(--border);
  padding: var(--space-4);
  background: linear-gradient(180deg, rgba(255,255,255,0.015), transparent);
}
[data-theme="light"] .mock__side {
  background: linear-gradient(180deg, rgba(15,17,38,0.02), transparent);
}
.mock__brand {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 6px 8px;
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
}
.mock__nav { display: flex; flex-direction: column; gap: 2px; }
.mock__nav li {
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: default;
}
.mock__nav li:hover { background: var(--surface); color: var(--text); }
.mock__nav li.is-active {
  background: var(--gradient-brand-soft);
  color: var(--text);
  font-weight: 600;
  border: 1px solid var(--border);
}

.mock__main {
  padding: var(--space-5) var(--space-6);
  display: flex; flex-direction: column; gap: var(--space-5);
}
.mock__head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: var(--space-3);
}
.mock__crumbs {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.mock__head h3 {
  margin-top: 4px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.mock__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
.kpi {
  display: flex; flex-direction: column; gap: 4px;
  padding: var(--space-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.kpi__label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-dim); }
.kpi__value { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.kpi__delta { font-size: 0.72rem; color: #22c55e; font-weight: 600; }
.kpi__delta--neutral { color: var(--text-dim); }

.mock__chart {
  width: 100%; min-height: 120px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
}

/* ----------------------------------------------------------------------------
   7. TRUST BAR
   ---------------------------------------------------------------------------- */
.trust {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.trust__caption {
  text-align: center;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: var(--space-6);
}
.trust__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8) var(--space-12);
  justify-content: center;
  align-items: center;
}
.trust__list li {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
}
.trust__list svg { color: var(--brand-1); }

/* ----------------------------------------------------------------------------
   8. FEATURES
   ---------------------------------------------------------------------------- */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}
.feature {
  position: relative;
  padding: var(--space-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
  overflow: hidden;
  isolation: isolate;
}
.feature::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 0%), rgba(139,92,246,0.10), transparent 40%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
  z-index: -1;
}
.feature:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  background: var(--surface-strong);
  box-shadow: var(--shadow-1);
}
.feature:hover::before { opacity: 1; }

.feature__icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: var(--gradient-brand-soft);
  color: var(--brand-1);
  margin-bottom: var(--space-4);
  border: 1px solid var(--border);
}
.feature__icon[data-color="violet"] { color: #a78bfa; }
.feature__icon[data-color="indigo"] { color: #818cf8; }
.feature__icon[data-color="cyan"] { color: #22d3ee; }

.feature h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
}
.feature p {
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.55;
}

/* ----------------------------------------------------------------------------
   9. HOW IT WORKS (STEPS)
   ---------------------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  counter-reset: step;
  position: relative;
}
.steps::before {
  content: "";
  position: absolute;
  left: 6%; right: 6%;
  top: 64px;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--border-strong), var(--border-strong), transparent);
  z-index: 0;
}
.step {
  position: relative;
  padding: var(--space-6);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex; flex-direction: column; gap: var(--space-3);
  z-index: 1;
  transition: var(--transition);
}
.step:hover { border-color: var(--brand-1); transform: translateY(-2px); }

.step__index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  display: inline-flex; align-items: center; gap: 0.55em;
}
.step__index::before {
  content: "";
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 999px;
  background: var(--gradient-brand);
  box-shadow: 0 0 12px rgba(139,92,246,0.7);
}
.step__body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.step__body p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}
.step__icon {
  align-self: flex-end;
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: var(--surface);
  color: var(--brand-1);
  border: 1px solid var(--border);
}

/* ----------------------------------------------------------------------------
   10. ARCHITECTURE
   ---------------------------------------------------------------------------- */
.arch {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}
.arch::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(800px 300px at 50% 0%, rgba(139,92,246,0.10), transparent 60%),
    radial-gradient(600px 300px at 0% 100%, rgba(6,182,212,0.07), transparent 60%);
  pointer-events: none;
}

.arch__layer {
  position: relative;
  padding: var(--space-4);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
}
.arch__layer--main { background: var(--bg-elev-2); border-style: solid; }

.arch__label {
  position: absolute;
  top: -10px; left: 16px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 0 8px;
  background: var(--bg-elev-2);
}
[data-theme="light"] .arch__label { background: var(--bg-elev); }

.arch__nodes {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  align-items: stretch;
}
.arch__node {
  flex: 1 1 200px;
  min-width: 180px;
  padding: var(--space-4);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex; flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
  color: var(--text);
  font-weight: 600;
  font-size: 0.92rem;
  transition: var(--transition);
}
.arch__node:hover { border-color: var(--brand-1); transform: translateY(-2px); }
.arch__node svg { color: var(--brand-1); }
.arch__node em {
  font-style: normal;
  font-weight: 500;
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}
.arch__node--accent { box-shadow: 0 0 0 1px var(--border-strong); }
.arch__node--brand {
  background: var(--gradient-brand);
  border-color: transparent;
  color: #fff;
}
.arch__node--brand svg, .arch__node--brand em { color: rgba(255,255,255,0.85); }
.arch__node--brand:hover { border-color: transparent; box-shadow: 0 18px 40px -18px rgba(139,92,246,0.55); }

.arch__divider {
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.arch__line {
  width: 2px; height: 28px;
  background: linear-gradient(to bottom, var(--border-strong), transparent);
}
.arch__line::before, .arch__line::after {
  content: "";
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--brand-1);
  left: 50%; transform: translateX(-50%);
  box-shadow: 0 0 12px var(--brand-1);
}
.arch__line::before { top: 0; }
.arch__line::after { bottom: 0; background: var(--brand-2); box-shadow: 0 0 12px var(--brand-2); }

/* ----------------------------------------------------------------------------
   11. STATS
   ---------------------------------------------------------------------------- */
.stats-section { padding: var(--space-16) 0; }
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  padding: var(--space-10);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(600px 220px at 50% 0%, rgba(99,102,241,0.12), transparent 60%);
  pointer-events: none;
}
.stat {
  text-align: center;
  display: flex; flex-direction: column; gap: 6px;
}
.stat__value {
  font-size: clamp(2rem, 4vw, 2.85rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}
.stat__label {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ----------------------------------------------------------------------------
   12. USE CASES
   ---------------------------------------------------------------------------- */
.use-cases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
}
.use-case {
  padding: var(--space-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.use-case::after {
  content: "";
  position: absolute;
  inset: -1px -1px auto -1px;
  height: 2px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.use-case:hover { transform: translateY(-3px); border-color: var(--border-strong); background: var(--surface-strong); }
.use-case:hover::after { transform: scaleX(1); }

.use-case__icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: var(--gradient-brand-soft);
  color: var(--brand-2);
  margin-bottom: var(--space-3);
  border: 1px solid var(--border);
}
.use-case h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.use-case p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.55; }

/* ----------------------------------------------------------------------------
   13. PRICING
   ---------------------------------------------------------------------------- */
.pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  align-items: stretch;
}
.plan {
  position: relative;
  padding: var(--space-8);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  display: flex; flex-direction: column;
  gap: var(--space-5);
  transition: var(--transition);
}
.plan:hover { border-color: var(--border-strong); transform: translateY(-2px); }

.plan--featured {
  background: linear-gradient(180deg, rgba(99,102,241,0.10), transparent 60%), var(--bg-elev);
  border-color: var(--brand-1);
  box-shadow: 0 30px 80px -32px rgba(99,102,241,0.55);
  transform: translateY(-6px);
}
.plan--featured:hover { transform: translateY(-8px); }
@media (max-width: 900px) { .plan--featured { transform: none; } }

.plan__badge {
  position: absolute;
  top: -12px; left: 50%; transform: translateX(-50%);
  padding: 4px 12px;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 24px -8px rgba(99,102,241,0.6);
}

.plan__head { display: flex; flex-direction: column; gap: 4px; }
.plan__name { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.01em; }
.plan__tag { font-size: 0.88rem; color: var(--text-muted); }

.plan__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-5);
}
.plan__currency { font-size: 1.1rem; color: var(--text-muted); font-weight: 600; }
.plan__amount {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}
.plan__amount--text { font-size: clamp(1.4rem, 3vw, 1.9rem); }
.plan__period { font-size: 0.95rem; color: var(--text-muted); margin-left: 4px; }

.plan__features {
  display: flex; flex-direction: column; gap: var(--space-3);
  flex: 1;
}
.plan__features li {
  position: relative;
  padding-left: 1.6em;
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.plan__features li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.45em;
  width: 16px; height: 16px;
  background: var(--gradient-brand);
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round' d='M3 8l3 3 7-7'/></svg>") center / contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round' d='M3 8l3 3 7-7'/></svg>") center / contain no-repeat;
}

/* ----------------------------------------------------------------------------
   14. FAQ
   ---------------------------------------------------------------------------- */
.faq {
  display: flex; flex-direction: column;
  gap: var(--space-3);
}
.faq__item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.faq__item[open] {
  border-color: var(--border-strong);
  background: var(--surface-strong);
}
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-5) var(--space-6);
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__chev {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: transform var(--transition);
}
.faq__item[open] .faq__chev { transform: rotate(180deg); }
.faq__body {
  padding: 0 var(--space-6) var(--space-5);
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ----------------------------------------------------------------------------
   15. CTA
   ---------------------------------------------------------------------------- */
.cta { padding: var(--space-20) 0; }
.cta__card {
  position: relative;
  padding: clamp(2rem, 5vw, 4rem);
  border-radius: var(--radius-2xl);
  background:
    radial-gradient(800px 300px at 100% 0%, rgba(139,92,246,0.25), transparent 60%),
    radial-gradient(600px 300px at 0% 100%, rgba(6,182,212,0.18), transparent 60%),
    linear-gradient(135deg, rgba(99,102,241,0.20), rgba(139,92,246,0.18));
  border: 1px solid var(--border-strong);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-8);
  align-items: center;
}
.cta__card::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 30%, transparent 80%);
  pointer-events: none;
}
.cta__copy h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: var(--space-3) 0 var(--space-3);
}
.cta__copy p { color: var(--text-muted); max-width: 540px; }
.cta__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* ----------------------------------------------------------------------------
   16. FOOTER
   ---------------------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  padding: var(--space-16) 0 var(--space-8);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: var(--space-12);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--border);
}
.footer__brand .brand { font-size: 1.1rem; }
.footer__tagline {
  margin-top: var(--space-3);
  color: var(--text-muted);
  font-size: 0.92rem;
  max-width: 320px;
}
.footer__social {
  display: flex; gap: var(--space-2);
  margin-top: var(--space-5);
}
.footer__social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: var(--transition);
}
.footer__social a:hover { color: var(--text); border-color: var(--brand-1); }

.footer__cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.footer__col h4 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text);
  margin-bottom: var(--space-4);
}
.footer__col li { margin-bottom: var(--space-2); }
.footer__col a { font-size: 0.9rem; color: var(--text-muted); }
.footer__col a:hover { color: var(--text); }

.footer__bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: var(--space-6);
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ----------------------------------------------------------------------------
   17. REVEAL ANIMATIONS
   ---------------------------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
  will-change: opacity, transform;
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .feature, .use-case, .step, .arch__node, .plan, .footer__social a, .btn { transition: none; }
  .feature:hover, .use-case:hover, .step:hover, .btn:hover, .plan:hover { transform: none; }
}

/* ----------------------------------------------------------------------------
   18. RESPONSIVE
   ---------------------------------------------------------------------------- */

/* >= 1440 → keep container wide */
@media (min-width: 1440px) {
  :root { --container: 1240px; }
}

/* <= 1024 — tablet */
@media (max-width: 1024px) {
  .mock__body { grid-template-columns: 180px 1fr; min-height: 340px; }
  .mock__stats { grid-template-columns: repeat(2, 1fr); }
  .pricing { grid-template-columns: 1fr; max-width: 540px; margin: 0 auto; }
  .plan--featured { transform: none; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps::before { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer__cols { grid-template-columns: repeat(2, 1fr); }
  .cta__card { grid-template-columns: 1fr; }
  .arch__nodes { flex-direction: column; align-items: stretch; }
}

/* <= 768 — mobile */
@media (max-width: 768px) {
  .section { padding: var(--space-16) 0; }
  .section__head { margin-bottom: var(--space-10); }

  .nav__links { display: none; }
  .nav__burger { display: inline-flex; }
  .hide-sm { display: none; }

  .hero { padding: var(--space-12) 0 var(--space-10); }
  .hero__title { font-size: clamp(2rem, 8vw, 3rem); }
  .hero__mock { margin-top: var(--space-8); }
  .mock__side { display: none; }
  .mock__body { grid-template-columns: 1fr; min-height: 0; }
  .mock__main { padding: var(--space-4); }
  .mock__stats { grid-template-columns: repeat(2, 1fr); }

  .features { grid-template-columns: 1fr; }
  .use-cases { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }

  .trust__list { gap: var(--space-5) var(--space-8); }

  .footer__cols { grid-template-columns: 1fr 1fr; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

/* <= 360 — tiny */
@media (max-width: 360px) {
  .container { padding: 0 var(--space-4); }
  .nav__inner { gap: var(--space-2); }
  .btn--sm { padding: 0.45rem 0.7rem; font-size: 0.8rem; }
  .hero__title { font-size: 1.85rem; }
  .mock__stats { grid-template-columns: 1fr; }
  .footer__cols { grid-template-columns: 1fr; }
}