/* ============================================================
   IIUO: Audio Booster — Landing Page Styles
   Namespace: .iiuo-ab-site-
   ============================================================ */

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

:root {
  --bg:        #0d0e11;
  --bg-alt:    #101215;
  --bg-card:   #13151a;
  --bg-card2:  #161820;
  --border:    #1e2130;
  --border2:   #252836;
  --accent:    #5b9cf6;
  --accent-dim:#2d4a8a;
  --text:      #c8ccd8;
  --text-muted:#52566a;
  --text-dim:  #32364a;
  --text-head: #eeeef2;
  --green:     #3a9e5f;
  --radius:    10px;
  --radius-sm: 7px;
  --transition: 0.15s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
code { font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace; }

/* ── Container ────────────────────────────────────────────── */
.iiuo-ab-site-container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ──────────────────────────────────────────────── */
.iiuo-ab-site-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition),
    border-color var(--transition), opacity var(--transition);
  white-space: nowrap;
}
.iiuo-ab-site-btn-sm { padding: 7px 14px; font-size: 12px; }
.iiuo-ab-site-btn-lg { padding: 12px 24px; font-size: 14px; }

.iiuo-ab-site-btn-primary {
  background: transparent;
  color: var(--accent);
  border-color: #2d5bbf;
}
.iiuo-ab-site-btn-primary:hover {
  background: rgba(91, 156, 246, 0.08);
  color: #7ab3ff;
  border-color: #4a7ad4;
}

.iiuo-ab-site-btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border2);
}
.iiuo-ab-site-btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.iiuo-ab-site-btn-donate {
  background: transparent;
  color: #c084a0;
  border-color: #3a2030;
}
.iiuo-ab-site-btn-donate:hover {
  background: rgba(192, 100, 140, 0.08);
  color: #e8a0bc;
  border-color: #7a3050;
}
.iiuo-ab-site-btn-nav-dl {
  background: transparent;
  color: var(--accent);
  border-color: #2d5bbf;
}
.iiuo-ab-site-btn-nav-dl:hover {
  background: rgba(91, 156, 246, 0.08);
  color: #7ab3ff;
  border-color: #4a7ad4;
}
.iiuo-ab-site-btn-donate-footer {
  padding: 7px 14px;
  font-size: 12px;
  align-self: flex-start;
}

/* ── Badge ────────────────────────────────────────────────── */
.iiuo-ab-site-badge {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  background: rgba(91,156,246,0.08);
  border: 1px solid rgba(91,156,246,0.18);
  border-radius: 20px;
  padding: 4px 12px;
  letter-spacing: 0.04em;
}

/* ── Accent text ──────────────────────────────────────────── */
.iiuo-ab-site-accent { color: var(--accent); }

/* ── Dot separator ────────────────────────────────────────── */
.iiuo-ab-site-dot {
  display: inline-block;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-dim);
  vertical-align: middle;
}

/* ── Link ─────────────────────────────────────────────────── */
.iiuo-ab-site-link {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--transition);
}
.iiuo-ab-site-link:hover { opacity: 0.75; }

/* ── Code inline ──────────────────────────────────────────── */
.iiuo-ab-site-code {
  font-size: 12px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--accent);
}

/* ── Code block ───────────────────────────────────────────── */
.iiuo-ab-site-code-block {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--accent);
  line-height: 1.9;
  white-space: pre;
}

/* ── Header ───────────────────────────────────────────────── */
.iiuo-ab-site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,14,17,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.iiuo-ab-site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 58px;
  gap: 16px;
}

/* Logo */
.iiuo-ab-site-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
}
.iiuo-ab-site-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--bg-card2);
  border: 1px solid var(--border2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.iiuo-ab-site-logo-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-head);
  letter-spacing: 0.01em;
}

/* Nav */
.iiuo-ab-site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.iiuo-ab-site-nav-link {
  font-size: 13px;
  font-weight: 450;
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.iiuo-ab-site-nav-link:hover { color: var(--text-head); background: var(--bg-card); }

/* Mobile menu button */
.iiuo-ab-site-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 8px;
  flex-shrink: 0;
}
.iiuo-ab-site-menu-btn span {
  display: block;
  height: 1.5px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.iiuo-ab-site-menu-btn.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.iiuo-ab-site-menu-btn.open span:nth-child(2) { opacity: 0; }
.iiuo-ab-site-menu-btn.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Hero ─────────────────────────────────────────────────── */
.iiuo-ab-site-hero {
  padding: 80px 0 72px;
  border-bottom: 1px solid var(--border);
}
.iiuo-ab-site-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.iiuo-ab-site-hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.iiuo-ab-site-hero-heading {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--text-head);
  line-height: 1.18;
  letter-spacing: -0.02em;
}
.iiuo-ab-site-hero-sub {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 440px;
}
.iiuo-ab-site-hero-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.iiuo-ab-site-hero-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-dim);
}

/* ── Extension Mockup ─────────────────────────────────────── */
.iiuo-ab-site-hero-preview {
  display: flex;
  justify-content: center;
  align-items: center;
}
.iiuo-ab-site-mockup {
  width: 300px;
  background: var(--bg-card);
  border: 1px solid var(--border2);
  border-radius: 12px;
  overflow: hidden;
}
.iiuo-ab-site-mockup-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--bg-card2);
  border-bottom: 1px solid var(--border);
  position: relative;
  min-height: 36px;
}
.iiuo-ab-site-mockup-dot {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border2);
  flex-shrink: 0;
  font-style: normal;
}
.iiuo-ab-site-mockup-title {
  position: absolute;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 10.5px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  white-space: nowrap;
  pointer-events: none;
  background: transparent;
  border-radius: 0;
  width: auto;
  height: auto;
  padding: 0;
  margin: 0;
}
.iiuo-ab-site-mockup-body {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.iiuo-ab-site-mockup-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.iiuo-ab-site-mockup-logo-block {
  display: flex;
  align-items: center;
  gap: 8px;
}
.iiuo-ab-site-mockup-icon {
  width: 26px; height: 26px;
  background: var(--bg-card2);
  border: 1px solid var(--border2);
  border-radius: 6px;
}
.iiuo-ab-site-mockup-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-head);
}
.iiuo-ab-site-mockup-brand {
  font-size: 9px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.iiuo-ab-site-mockup-toggle {
  width: 30px; height: 17px;
  border-radius: 9px;
  background: var(--border2);
  border: 1px solid var(--border);
  position: relative;
}
.iiuo-ab-site-mockup-toggle::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: transform 0.2s;
}
.iiuo-ab-site-mockup-toggle.on {
  background: rgba(91,156,246,0.2);
  border-color: var(--accent-dim);
}
.iiuo-ab-site-mockup-toggle.on::after {
  transform: translateX(13px);
  background: var(--accent);
}
.iiuo-ab-site-mockup-display {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 11px;
}
.iiuo-ab-site-mockup-label {
  font-size: 9px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 3px;
}
.iiuo-ab-site-mockup-status {
  font-size: 9px;
  color: var(--green);
  font-weight: 500;
}
.iiuo-ab-site-mockup-val {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.iiuo-ab-site-mockup-slider-wrap { display: flex; flex-direction: column; gap: 5px; }
.iiuo-ab-site-mockup-track {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  position: relative;
}
.iiuo-ab-site-mockup-fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: var(--accent);
  border-radius: 2px;
}
.iiuo-ab-site-mockup-thumb {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-card);
}
.iiuo-ab-site-mockup-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 8px;
  color: var(--text-dim);
}
.iiuo-ab-site-mockup-presets {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.iiuo-ab-site-mockup-presets span {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 9px;
  color: var(--text-muted);
  text-align: center;
  padding: 4px 2px;
}
.iiuo-ab-site-mockup-presets span.active {
  background: rgba(91,156,246,0.1);
  border-color: var(--accent-dim);
  color: var(--accent);
}
.iiuo-ab-site-mockup-reset {
  font-size: 9px;
  color: var(--text-dim);
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 5px;
}

/* ── Sections ─────────────────────────────────────────────── */
.iiuo-ab-site-section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
.iiuo-ab-site-section-alt {
  background: var(--bg-alt);
}
.iiuo-ab-site-section-head {
  text-align: center;
  margin-bottom: 44px;
}
.iiuo-ab-site-section-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--text-head);
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.iiuo-ab-site-section-sub {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto;
}

/* ── Grid ─────────────────────────────────────────────────── */
.iiuo-ab-site-grid { display: grid; gap: 14px; }
.iiuo-ab-site-grid-4 { grid-template-columns: repeat(4, 1fr); }
.iiuo-ab-site-grid-3 { grid-template-columns: repeat(3, 1fr); }

/* ── Feature Cards ────────────────────────────────────────── */
.iiuo-ab-site-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color var(--transition);
}
.iiuo-ab-site-card:hover { border-color: var(--border2); }
.iiuo-ab-site-card-icon {
  width: 34px; height: 34px;
  background: var(--bg-card2);
  border: 1px solid var(--border2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.iiuo-ab-site-card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-head);
}
.iiuo-ab-site-card-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Why Grid ─────────────────────────────────────────────── */
.iiuo-ab-site-why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.iiuo-ab-site-why-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--bg-card);
  transition: background var(--transition);
}
.iiuo-ab-site-why-item:hover { background: var(--bg-card2); }
.iiuo-ab-site-why-num {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  flex-shrink: 0;
  padding-top: 2px;
}
.iiuo-ab-site-why-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-head);
  margin-bottom: 6px;
}
.iiuo-ab-site-why-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Download Card ────────────────────────────────────────── */
.iiuo-ab-site-download-card {
  background: var(--bg-card);
  border: 1px solid var(--border2);
  border-radius: 14px;
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.iiuo-ab-site-download-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.iiuo-ab-site-download-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-head);
  letter-spacing: -0.02em;
}
.iiuo-ab-site-download-sub {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 420px;
  line-height: 1.65;
}
.iiuo-ab-site-download-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-dim);
  flex-wrap: wrap;
}
.iiuo-ab-site-download-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.iiuo-ab-site-download-note {
  font-size: 11px;
  color: var(--text-dim);
  text-align: center;
}

/* ── Steps ────────────────────────────────────────────────── */
.iiuo-ab-site-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.iiuo-ab-site-step {
  display: flex;
  gap: 20px;
  padding: 20px 24px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.iiuo-ab-site-step:last-child { border-bottom: none; }
.iiuo-ab-site-step:hover { background: var(--bg-card2); }
.iiuo-ab-site-step-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(91,156,246,0.08);
  border: 1px solid rgba(91,156,246,0.2);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}
.iiuo-ab-site-step-body { display: flex; flex-direction: column; gap: 4px; }
.iiuo-ab-site-step-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-head);
}
.iiuo-ab-site-step-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── How to Use Cards ─────────────────────────────────────── */
.iiuo-ab-site-use-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color var(--transition);
}
.iiuo-ab-site-use-card:hover { border-color: var(--border2); }
.iiuo-ab-site-use-num {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.iiuo-ab-site-use-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-head);
}
.iiuo-ab-site-use-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Tip box */
.iiuo-ab-site-tip-box {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 20px;
  background: rgba(91,156,246,0.05);
  border: 1px solid rgba(91,156,246,0.14);
  border-radius: var(--radius);
  padding: 14px 18px;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.6;
}
.iiuo-ab-site-tip-box svg { color: var(--accent); flex-shrink: 0; margin-top: 2px; }

/* ── Docs Grid ────────────────────────────────────────────── */
.iiuo-ab-site-docs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.iiuo-ab-site-doc-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.iiuo-ab-site-doc-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-head);
}
.iiuo-ab-site-doc-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
}
.iiuo-ab-site-doc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.iiuo-ab-site-doc-list li {
  font-size: 13px;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}
.iiuo-ab-site-doc-list li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-dim);
}

/* ── FAQ ──────────────────────────────────────────────────── */
.iiuo-ab-site-faq-list {
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.iiuo-ab-site-faq-item {
  border-bottom: 1px solid var(--border);
}
.iiuo-ab-site-faq-item:last-child { border-bottom: none; }
.iiuo-ab-site-faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: var(--bg-card);
  border: none;
  text-align: left;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-head);
  transition: background var(--transition), color var(--transition);
}
.iiuo-ab-site-faq-q::after {
  content: '+';
  font-size: 18px;
  font-weight: 300;
  color: var(--text-dim);
  flex-shrink: 0;
  transition: transform 0.2s ease, color 0.15s ease;
  line-height: 1;
}
.iiuo-ab-site-faq-q:hover { background: var(--bg-card2); }
.iiuo-ab-site-faq-q[aria-expanded="true"] { color: var(--accent); }
.iiuo-ab-site-faq-q[aria-expanded="true"]::after {
  content: '–';
  color: var(--accent);
}
.iiuo-ab-site-faq-a {
  display: none;
  padding: 0 22px 18px;
  background: var(--bg-card);
}
.iiuo-ab-site-faq-a.open { display: block; }
.iiuo-ab-site-faq-a p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── Footer ───────────────────────────────────────────────── */
.iiuo-ab-site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.iiuo-ab-site-footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  padding-top: 48px;
  padding-bottom: 40px;
  align-items: start;
}
.iiuo-ab-site-footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 340px;
}
.iiuo-ab-site-footer-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
}
.iiuo-ab-site-footer-credit {
  font-size: 12px;
  color: var(--text-dim);
}
.iiuo-ab-site-footer-links {
  display: flex;
  gap: 48px;
}
.iiuo-ab-site-footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.iiuo-ab-site-footer-col-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-head);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}
.iiuo-ab-site-footer-link {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.iiuo-ab-site-footer-link:hover { color: var(--text-head); }
.iiuo-ab-site-footer-bottom {
  border-top: 1px solid var(--border);
}
.iiuo-ab-site-footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
  font-size: 12px;
  color: var(--text-dim);
  gap: 16px;
  flex-wrap: wrap;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 960px) {
  .iiuo-ab-site-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .iiuo-ab-site-docs-grid { grid-template-columns: repeat(2, 1fr); }
  .iiuo-ab-site-why-grid { grid-template-columns: repeat(2, 1fr); }
  .iiuo-ab-site-hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .iiuo-ab-site-hero-preview { order: -1; }
  .iiuo-ab-site-download-card { flex-direction: column; align-items: flex-start; padding: 28px; }
  .iiuo-ab-site-download-action { align-items: flex-start; }
}

@media (max-width: 700px) {
  .iiuo-ab-site-menu-btn { display: flex; }
  .iiuo-ab-site-nav {
    display: none;
    position: absolute;
    top: 58px;
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 10px 16px 16px;
    gap: 2px;
  }
  .iiuo-ab-site-nav.open { display: flex; }
  .iiuo-ab-site-nav-link { padding: 10px 12px; }
  .iiuo-ab-site-nav .iiuo-ab-site-btn { margin-top: 6px; text-align: center; justify-content: center; }
  .iiuo-ab-site-header { position: relative; }

  .iiuo-ab-site-grid-4 { grid-template-columns: 1fr 1fr; }
  .iiuo-ab-site-grid-3 { grid-template-columns: 1fr; }
  .iiuo-ab-site-docs-grid { grid-template-columns: 1fr; }
  .iiuo-ab-site-why-grid { grid-template-columns: 1fr; }
  .iiuo-ab-site-footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .iiuo-ab-site-footer-links { gap: 32px; }
  .iiuo-ab-site-hero { padding: 48px 0 44px; }
  .iiuo-ab-site-section { padding: 52px 0; }
  .iiuo-ab-site-mockup { width: 100%; max-width: 300px; }
}

@media (max-width: 440px) {
  .iiuo-ab-site-grid-4 { grid-template-columns: 1fr; }
  .iiuo-ab-site-hero-actions { flex-direction: column; align-items: flex-start; }
  .iiuo-ab-site-download-card { padding: 22px 18px; }
  .iiuo-ab-site-footer-links { flex-direction: column; gap: 24px; }
}

/* Thin scrollbar */
::-webkit-scrollbar {
    width: 1px;
}