/* ============================================================
   seismicdev.it — Global Design System
   iOS-inspired: SF Pro typography, glass morphism, fluid motion
   ============================================================ */

/* ── Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── CSS Custom Properties ── */
:root {
  --font: -apple-system, "SF Pro Display", "Inter", system-ui, sans-serif;
  --font-mono: "SF Mono", ui-monospace, monospace;

  /* Colors — Light */
  --bg: #f5f5f7;
  --bg-elevated: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-hover: rgba(255, 255, 255, 0.88);
  --surface: #ffffff;
  --surface-secondary: #f2f2f7;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #aeaeb2;
  --text-on-accent: #ffffff;

  /* Accent */
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --accent-glow: rgba(0, 113, 227, 0.25);

  /* Bivora orange */
  --bivora: #FF6B35;
  --bivora-dark: #e85d2a;
  --bivora-light: #FF9A6C;
  --bivora-glow: rgba(255, 107, 53, 0.22);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.07), 0 2px 6px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.05);
  --shadow-xl: 0 24px 64px rgba(0,0,0,.12), 0 8px 24px rgba(0,0,0,.06);

  /* Radius */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 30px;
  --r-full: 9999px;

  /* Spacing */
  --nav-h: 64px;
  --section-gap: 120px;
  --container: 1100px;

  /* Transitions */
  --t-fast: 150ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --t-base: 260ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --t-spring: 480ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-elevated: #1c1c1e;
    --bg-glass: rgba(28, 28, 30, 0.82);
    --bg-glass-hover: rgba(44, 44, 46, 0.90);
    --surface: #1c1c1e;
    --surface-secondary: #2c2c2e;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);
    --text-primary: #f5f5f7;
    --text-secondary: #98989d;
    --text-tertiary: #636366;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.4);
    --shadow-md: 0 4px 16px rgba(0,0,0,.5);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.6);
    --shadow-xl: 0 24px 64px rgba(0,0,0,.7);
  }
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
}

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

/* ── Typography ── */
.text-xs   { font-size: .75rem; line-height: 1.4; }
.text-sm   { font-size: .875rem; line-height: 1.45; }
.text-base { font-size: 1rem; line-height: 1.5; }
.text-lg   { font-size: 1.125rem; line-height: 1.45; }
.text-xl   { font-size: 1.25rem; line-height: 1.4; }
.text-2xl  { font-size: 1.5rem; line-height: 1.35; }
.text-3xl  { font-size: 2rem; line-height: 1.25; }
.text-4xl  { font-size: 2.5rem; line-height: 1.2; }
.text-5xl  { font-size: 3.5rem; line-height: 1.1; }
.text-6xl  { font-size: 4.5rem; line-height: 1.05; }

.label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: var(--section-gap) 0; }

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border);
  transition: background var(--t-base), box-shadow var(--t-base);
}
.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text-primary);
}
.navbar__logo-mark {
  width: 32px; height: 32px;
  background: var(--text-primary);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
}
.navbar__logo-mark svg { width: 18px; height: 18px; fill: var(--bg); }
.navbar__nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.navbar__link {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--r-full);
  transition: color var(--t-fast), background var(--t-fast);
}
.navbar__link:hover {
  color: var(--text-primary);
  background: var(--surface-secondary);
}
.navbar__cta {
  font-size: .9rem;
  font-weight: 600;
  color: var(--accent);
  padding: 7px 16px;
  border-radius: var(--r-full);
  background: rgba(0, 113, 227, 0.1);
  transition: background var(--t-fast), color var(--t-fast);
}
.navbar__cta:hover {
  background: rgba(0, 113, 227, 0.18);
}
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.navbar__hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--t-base), opacity var(--t-base);
}

/* ── Hero ── */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-h) + 60px) 24px 80px;
  position: relative;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .35;
}
.hero__orb--1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #0071e3 0%, transparent 70%);
  top: -100px; right: -100px;
}
.hero__orb--2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #ff6b35 0%, transparent 70%);
  bottom: -80px; left: -80px;
}
.hero__content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--r-full);
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
}
.hero__eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #34c759;
  box-shadow: 0 0 6px rgba(52, 199, 89, .7);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .7; transform: scale(1.2); }
}
.hero__title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.06;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.hero__title .gradient {
  background: linear-gradient(135deg, #0071e3 0%, #5ac8fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__sub {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 400;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 44px;
  line-height: 1.55;
}
.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--r-full);
  font-size: 1rem;
  font-weight: 600;
  transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
  cursor: pointer;
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn--primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 16px rgba(0, 113, 227, 0.3);
}
.btn--primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 6px 24px rgba(0, 113, 227, 0.4);
  transform: translateY(-1px);
}
.btn--secondary {
  background: var(--surface-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn--secondary:hover {
  background: var(--border);
  transform: translateY(-1px);
}
.btn--ghost {
  color: var(--accent);
  padding: 14px 20px;
}
.btn--ghost:hover { text-decoration: underline; }
.btn--orange {
  background: var(--bivora);
  color: white;
  box-shadow: 0 4px 16px var(--bivora-glow);
}
.btn--orange:hover {
  background: var(--bivora-dark);
  box-shadow: 0 6px 24px var(--bivora-glow);
  transform: translateY(-1px);
}
.btn--sm {
  padding: 10px 20px;
  font-size: .875rem;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t-base), transform var(--t-base), border-color var(--t-base);
  overflow: hidden;
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

/* ── App Grid ── */
.apps-section { background: var(--bg); }
.apps-section__header {
  text-align: center;
  margin-bottom: 64px;
}
.apps-section__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 12px;
}
.apps-section__sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
}
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.app-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: box-shadow var(--t-base), transform var(--t-base), border-color var(--t-base);
  overflow: hidden;
  position: relative;
}
.app-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--t-base);
}
.app-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
  border-color: var(--border-strong);
}
.app-card:hover::before { opacity: 1; }
.app-card__header {
  display: flex;
  align-items: center;
  gap: 16px;
}
.app-card__icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
  box-shadow: var(--shadow-md);
}
.app-card__meta { flex: 1; min-width: 0; }
.app-card__name {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: 2px;
}
.app-card__category {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.app-card__desc {
  font-size: .95rem;
  color: var(--text-secondary);
  line-height: 1.55;
  flex: 1;
}
.app-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
}
.app-card__badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: var(--r-full);
  font-size: .75rem;
  font-weight: 600;
  background: var(--surface-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.badge--free {
  background: rgba(52, 199, 89, 0.1);
  color: #248a3d;
  border-color: rgba(52, 199, 89, 0.2);
}
.badge--ios {
  background: rgba(0, 113, 227, 0.1);
  color: var(--accent);
  border-color: rgba(0, 113, 227, 0.2);
}
.appstore-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  background: var(--text-primary);
  color: var(--bg);
  border-radius: var(--r-full);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .01em;
  transition: opacity var(--t-fast), transform var(--t-fast);
  white-space: nowrap;
}
.appstore-btn:hover { opacity: .8; transform: scale(1.03); }
.appstore-btn svg { width: 14px; height: 14px; fill: currentColor; }

/* ── Values / Features grid ── */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 56px;
}
.value-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px 24px;
  transition: box-shadow var(--t-base), transform var(--t-base);
}
.value-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.value-card__icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.value-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -.015em;
}
.value-card__desc {
  font-size: .9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ── Stats strip ── */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-top: 80px;
}
.stat-item {
  background: var(--surface);
  padding: 32px 24px;
  text-align: center;
}
.stat-item__number {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-item__label {
  font-size: .85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ── Footer ── */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 56px 0 40px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer__brand { grid-column: 1; }
.footer__brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.footer__brand-desc {
  font-size: .875rem;
  color: var(--text-secondary);
  line-height: 1.55;
  max-width: 200px;
}
.footer__col-title {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__link {
  font-size: .9rem;
  color: var(--text-secondary);
  transition: color var(--t-fast);
}
.footer__link:hover { color: var(--text-primary); }
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 40px;
  margin-top: 40px;
  border-top: 1px solid var(--border);
  gap: 16px;
  flex-wrap: wrap;
}
.footer__copy {
  font-size: .85rem;
  color: var(--text-tertiary);
}
.footer__legal {
  display: flex;
  gap: 20px;
}
.footer__legal a {
  font-size: .85rem;
  color: var(--text-tertiary);
  transition: color var(--t-fast);
}
.footer__legal a:hover { color: var(--text-secondary); }

/* ── Page hero (inner pages) ── */
.page-hero {
  padding: calc(var(--nav-h) + 60px) 0 60px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.page-hero__eyebrow {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.page-hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.1;
  margin-bottom: 16px;
}
.page-hero__sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.55;
}

/* ── App detail page ── */
.app-hero {
  padding: calc(var(--nav-h) + 60px) 0 80px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.app-hero__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 40px;
  align-items: center;
}
.app-hero__icon {
  width: 120px; height: 120px;
  border-radius: 26px;
  flex-shrink: 0;
  box-shadow: var(--shadow-xl);
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem;
}
.app-hero__eyebrow {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.app-hero__name {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.1;
  margin-bottom: 12px;
}
.app-hero__tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.5;
}
.app-hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ── Features section (app pages) ── */
.features-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.feature-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: box-shadow var(--t-base), transform var(--t-base);
}
.feature-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.feature-item__icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  background: var(--surface-secondary);
}
.feature-item__title {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 5px;
}
.feature-item__desc {
  font-size: .875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ── Prose (privacy, legal) ── */
.prose-container {
  max-width: 720px;
  margin: 0 auto;
}
.prose-section {
  padding: 60px 0;
  border-bottom: 1px solid var(--border);
}
.prose-section:last-child { border-bottom: none; }
.prose-date {
  font-size: .85rem;
  color: var(--text-secondary);
  margin-bottom: 48px;
}
.prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -.025em;
  margin-bottom: 16px;
  margin-top: 40px;
  color: var(--text-primary);
}
.prose h2:first-child { margin-top: 0; }
.prose h3 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -.015em;
  margin-bottom: 10px;
  margin-top: 28px;
}
.prose p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}
.prose ul, .prose ol {
  margin: 0 0 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.prose li {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.65;
}
.prose ul li { list-style: disc; }
.prose ol li { list-style: decimal; }
.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(0, 113, 227, 0.3);
  transition: text-decoration-color var(--t-fast);
}
.prose a:hover { text-decoration-color: currentColor; }
.prose strong { font-weight: 700; color: var(--text-primary); }
.prose-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: .9rem;
}
.prose-table th, .prose-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.prose-table th {
  font-weight: 700;
  color: var(--text-primary);
  background: var(--surface-secondary);
  font-size: .8rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.prose-table td { color: var(--text-secondary); }
.prose-table tr:last-child td { border-bottom: none; }

/* ── Contact / Support cards ── */
.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.support-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px 24px;
  text-align: center;
  transition: box-shadow var(--t-base), transform var(--t-base);
}
.support-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.support-card__icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 16px;
}
.support-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.support-card__desc {
  font-size: .875rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 20px;
}

/* ── FAQ ── */
.faq-list { display: flex; flex-direction: column; gap: 8px; margin-top: 40px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
}
.faq-item__q {
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  font-size: .95rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background var(--t-fast);
}
.faq-item__q:hover { background: var(--surface-secondary); }
.faq-item__q svg {
  width: 18px; height: 18px;
  flex-shrink: 0;
  stroke: var(--text-secondary);
  transition: transform var(--t-base);
}
.faq-item.open .faq-item__q svg { transform: rotate(180deg); }
.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--t-base);
}
.faq-item.open .faq-item__a { max-height: 500px; }
.faq-item__a-inner {
  padding: 0 20px 18px;
  font-size: .9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── Scroll-animate ── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s cubic-bezier(.25,.46,.45,.94),
              transform .6s cubic-bezier(.25,.46,.45,.94);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up-delay-1 { transition-delay: .1s; }
.fade-up-delay-2 { transition-delay: .2s; }
.fade-up-delay-3 { transition-delay: .3s; }
.fade-up-delay-4 { transition-delay: .4s; }

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ── Color utilities ── */
.bg-bivora   { background: linear-gradient(135deg, #FF6B35, #FF9A6C); }
.bg-blue     { background: linear-gradient(135deg, #0071e3, #5ac8fa); }
.text-bivora { color: var(--bivora); }
.text-accent { color: var(--accent); }

/* ── Responsive ── */
@media (max-width: 768px) {
  :root { --section-gap: 80px; }
  .navbar__nav { display: none; }
  .navbar__hamburger { display: flex; }
  .navbar__nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 16px;
    border-bottom: 1px solid var(--border);
    gap: 4px;
  }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .app-hero__inner { grid-template-columns: 1fr; text-align: center; }
  .app-hero__icon { margin: 0 auto; }
  .app-hero__actions { justify-content: center; }
  .hero__title { letter-spacing: -.03em; }
}
@media (max-width: 480px) {
  .footer__inner { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: 1fr 1fr; }
}