/* ============================================
   SpeakPaste Landing Page — Obsidian Dark Theme
   ============================================ */

/* --- Design Tokens --- */
:root {
  --bg-base:       #0d0e12;
  --bg-surface:    #13141a;
  --bg-card:       #16181f;
  --bg-card-hover: #1c1f2a;
  --border:        rgba(255,255,255,0.06);
  --border-glow:   rgba(167,139,250,0.25);

  --text-primary:  #f1f3f9;
  --text-secondary:#8b90a4;
  --text-muted:    #4d5165;

  --accent-violet: #a78bfa;
  --accent-sky:    #38bdf8;
  --accent-green:  #34d399;
  --accent-pink:   #ec4899;
  --accent-amber:  #f59e0b;

  --gradient-brand: linear-gradient(135deg in oklch, #a78bfa, #38bdf8);
  --gradient-glow:  radial-gradient(ellipse at center, rgba(167,139,250,0.15) 0%, transparent 70%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: rgba(167,139,250,0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(167,139,250,0.5); }

/* --- Selection --- */
::selection { background: rgba(167,139,250,0.3); color: var(--text-primary); }

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  transition: background 0.3s var(--ease-smooth), backdrop-filter 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(13, 14, 18, 0.85);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom-color: var(--border);
}

.nav-inner {
  max-width: 1140px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.logo-icon { display: flex; align-items: center; }

.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  padding: 6px 14px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.nav-cta {
  padding: 8px 18px;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s var(--ease-spring), box-shadow 0.2s;
  box-shadow: 0 0 20px rgba(167,139,250,0.25);
  white-space: nowrap;
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 0 32px rgba(167,139,250,0.4);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
  text-align: center;
}

/* Grid background */
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(167,139,250,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(167,139,250,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, black 30%, transparent 100%);
  pointer-events: none;
}

/* Ambient glow orbs */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.5;
}

.hero-glow--1 {
  width: 600px;
  height: 400px;
  top: -100px;
  left: 50%;
  translate: -60% 0;
  background: radial-gradient(ellipse, rgba(167,139,250,0.3) 0%, transparent 70%);
  animation: floatGlow1 8s ease-in-out infinite;
}

.hero-glow--2 {
  width: 500px;
  height: 300px;
  top: 100px;
  left: 50%;
  translate: 10% 0;
  background: radial-gradient(ellipse, rgba(56,189,248,0.2) 0%, transparent 70%);
  animation: floatGlow2 10s ease-in-out infinite;
}

@keyframes floatGlow1 {
  0%, 100% { translate: -60% 0; opacity: 0.5; }
  50%       { translate: -55% -20px; opacity: 0.7; }
}

@keyframes floatGlow2 {
  0%, 100% { translate: 10% 0; opacity: 0.4; }
  50%       { translate: 15% 20px; opacity: 0.6; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(167,139,250,0.08);
  border: 1px solid rgba(167,139,250,0.2);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-violet);
  letter-spacing: 0.01em;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--accent-green); }
  50%       { opacity: 0.6; box-shadow: 0 0 14px var(--accent-green); }
}

.hero-title {
  font-size: clamp(42px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.hero-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 14px;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.75em;
  font-weight: 600;
  vertical-align: middle;
  box-shadow: 0 2px 0 rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.08);
  letter-spacing: 0;
}

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

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  max-width: 580px;
  line-height: 1.65;
  font-weight: 400;
}

/* --- Waveform --- */
.waveform-container {
  position: relative;
  width: 160px;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 8px 0;
}

.waveform-rings {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(167,139,250,0.3);
  animation: ringPulse 3s ease-out infinite;
}

.ring--1 { width: 60px;  height: 60px;  animation-delay: 0s;    border-color: rgba(167,139,250,0.5); }
.ring--2 { width: 90px;  height: 90px;  animation-delay: 0.5s;  border-color: rgba(167,139,250,0.35); }
.ring--3 { width: 120px; height: 120px; animation-delay: 1s;    border-color: rgba(56,189,248,0.25); }
.ring--4 { width: 152px; height: 152px; animation-delay: 1.5s;  border-color: rgba(56,189,248,0.15); }

@keyframes ringPulse {
  0%   { transform: scale(0.9); opacity: 1; }
  70%  { opacity: 0.4; }
  100% { transform: scale(1.05); opacity: 0; }
}

.waveform-bars {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
}

.bar {
  width: 3px;
  border-radius: 2px;
  background: var(--gradient-brand);
  animation: barDance 1.4s ease-in-out infinite;
}

.bar:nth-child(1)  { height: 12px; animation-delay: 0.0s; }
.bar:nth-child(2)  { height: 20px; animation-delay: 0.1s; }
.bar:nth-child(3)  { height: 30px; animation-delay: 0.2s; }
.bar:nth-child(4)  { height: 22px; animation-delay: 0.3s; }
.bar:nth-child(5)  { height: 38px; animation-delay: 0.15s; }
.bar:nth-child(6)  { height: 48px; animation-delay: 0.25s; }
.bar:nth-child(7)  { height: 56px; animation-delay: 0.05s; }
.bar:nth-child(8)  { height: 48px; animation-delay: 0.35s; }
.bar:nth-child(9)  { height: 38px; animation-delay: 0.1s; }
.bar:nth-child(10) { height: 28px; animation-delay: 0.2s; }
.bar:nth-child(11) { height: 22px; animation-delay: 0.3s; }
.bar:nth-child(12) { height: 32px; animation-delay: 0.15s; }
.bar:nth-child(13) { height: 18px; animation-delay: 0.25s; }
.bar:nth-child(14) { height: 12px; animation-delay: 0.4s; }
.bar:nth-child(15) { height: 8px;  animation-delay: 0.5s; }

@keyframes barDance {
  0%, 100% { transform: scaleY(0.4); opacity: 0.5; }
  50%       { transform: scaleY(1);   opacity: 1;   }
}

.waveform-mic {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(13,14,18,0.9);
  border-radius: 50%;
  border: 1px solid rgba(167,139,250,0.3);
  box-shadow: 0 0 20px rgba(167,139,250,0.2);
}

/* --- Hero Actions --- */
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-note {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease-spring), box-shadow 0.2s, opacity 0.2s;
  border: none;
  font-family: var(--font);
}

.btn--primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 0 30px rgba(167,139,250,0.3), 0 4px 16px rgba(0,0,0,0.4);
  flex-direction: row;
  gap: 10px;
  align-items: flex-start;
}

.btn--primary:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 0 50px rgba(167,139,250,0.45), 0 8px 24px rgba(0,0,0,0.5);
}

.btn--primary:active {
  transform: translateY(0) scale(0.99);
}

.btn--primary .btn-sub {
  display: block;
  font-size: 11px;
  font-weight: 400;
  opacity: 0.75;
  letter-spacing: 0.02em;
}

.btn--primary > svg { flex-shrink: 0; margin-top: 2px; }

.btn--primary > div, .btn--primary > span:not(.btn-sub) {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.btn--secondary {
  background: rgba(255,255,255,0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  flex-direction: row;
  gap: 10px;
}

.btn--secondary:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,0.08);
  color: var(--text-primary);
  border-color: var(--border-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--accent-violet);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 0;
  text-decoration: none;
  transition: opacity 0.2s, gap 0.2s;
}

.btn--ghost:hover { opacity: 0.7; }

.btn--large {
  padding: 18px 36px;
  font-size: 17px;
  border-radius: var(--radius-lg);
}

.btn--large .btn-sub {
  font-size: 12px;
}

/* ============================================
   Sections — Shared
   ============================================ */
.section-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-violet);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 64px;
}

/* --- Scroll reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-smooth), transform 0.6s var(--ease-smooth);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   How it Works
   ============================================ */
.how-it-works {
  padding: 120px 24px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2px;
  counter-reset: steps;
}

.step {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 40px 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease-spring);
}

.step:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.step:nth-child(1) { border-radius: var(--radius-lg) 0 0 var(--radius-lg); }
.step:nth-child(3) { border-radius: 0 var(--radius-lg) var(--radius-lg) 0; }

.step-number {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.step-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: rgba(167,139,250,0.08);
  border: 1px solid rgba(167,139,250,0.15);
  border-radius: var(--radius-md);
}

.step-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

kbd {
  display: inline-flex;
  align-items: center;
  padding: 1px 8px;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-radius: 5px;
  font-family: var(--font);
  font-size: 0.85em;
  font-weight: 600;
  box-shadow: 0 2px 0 rgba(0,0,0,0.4);
}

.step-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================
   Features Grid
   ============================================ */
.features {
  padding: 120px 24px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.feature-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease-spring), box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(167,139,250,0.05) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s;
}

.feature-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 0 1px rgba(167,139,250,0.1);
}

.feature-card:hover::before { opacity: 1; }

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: rgba(167,139,250,0.07);
  border: 1px solid rgba(167,139,250,0.12);
  border-radius: var(--radius-md);
}

.feature-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.feature-stat {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(167,139,250,0.08);
  border: 1px solid rgba(167,139,250,0.15);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-violet);
  letter-spacing: 0.02em;
  align-self: flex-start;
}

/* ============================================
   Comparison Table
   ============================================ */
.comparison {
  padding: 120px 24px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  min-width: 1280px;
  border-collapse: collapse;
  font-size: 13px;
  white-space: normal;
}

.comparison-table th,
.comparison-table td {
  width: 150px;
  padding: 16px 18px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  line-height: 1.45;
  vertical-align: middle;
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  width: 190px;
  position: sticky;
  left: 0;
  z-index: 2;
  text-align: left;
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
  background: var(--bg-card);
}

.comparison-table thead th {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-card);
  padding-top: 20px;
  padding-bottom: 20px;
}

.comparison-table thead th:first-child {
  z-index: 3;
}

.col-speakpaste {
  background: rgba(167,139,250,0.04) !important;
  border-left: 1px solid rgba(167,139,250,0.15) !important;
  border-right: 1px solid rgba(167,139,250,0.15) !important;
  color: var(--text-primary) !important;
}

thead .col-speakpaste {
  color: var(--accent-violet) !important;
}

.comparison-table tbody tr:last-child td { border-bottom: none; }

.comparison-table tbody tr:hover td {
  background: rgba(255,255,255,0.02);
}

.check  { color: var(--accent-green); font-weight: 600; }
.cross  { color: var(--text-muted);   font-weight: 500; }
.neutral { color: var(--accent-amber); font-weight: 500; }

.comparison-note {
  margin: 16px 0 0;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.6;
}

/* ============================================
   Documentation
   ============================================ */
.docs-section {
  padding: 120px 24px;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border);
}

.docs-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  margin-top: 44px;
}

.docs-nav {
  position: sticky;
  top: 88px;
  display: grid;
  gap: 6px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-card);
}

.docs-nav a {
  padding: 8px 10px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.docs-nav a:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.docs-content {
  display: grid;
  gap: 16px;
}

.doc-panel {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-card);
}

.doc-panel-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.doc-kicker {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(167,139,250,0.1);
  color: var(--accent-violet);
  font-size: 12px;
  font-weight: 700;
}

.doc-panel h3 {
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.doc-panel h4 {
  margin-bottom: 10px;
  color: var(--text-primary);
  font-size: 14px;
}

.doc-panel p {
  color: var(--text-secondary);
}

.doc-panel a {
  color: var(--accent-sky);
  text-decoration: none;
}

.doc-panel a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.doc-list {
  display: grid;
  gap: 10px;
  padding-left: 18px;
  color: var(--text-secondary);
}

.doc-list--ordered {
  counter-reset: docs;
}

.doc-list li::marker {
  color: var(--accent-violet);
}

.doc-note {
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px solid rgba(56,189,248,0.16);
  border-radius: var(--radius-sm);
  background: rgba(56,189,248,0.05);
  font-size: 14px;
}

.doc-panel code {
  padding: 2px 5px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: rgba(255,255,255,0.04);
  color: var(--text-primary);
  font-size: 0.9em;
}

.engine-list {
  display: grid;
  gap: 10px;
}

.engine-list > div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.engine-list > div:last-child {
  border-bottom: 0;
}

.engine-list strong {
  color: var(--text-primary);
}

.engine-list span {
  color: var(--text-secondary);
}

.doc-details {
  border-top: 1px solid var(--border);
}

.doc-details:last-child {
  border-bottom: 1px solid var(--border);
}

.doc-details summary {
  cursor: pointer;
  padding: 16px 0;
  color: var(--text-primary);
  font-weight: 600;
}

.doc-details p {
  padding: 0 0 16px;
}

/* ============================================
   Download Section
   ============================================ */
.download-section {
  padding: 120px 24px;
}

.download-card {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
  padding: 56px;
  background: var(--bg-card);
  border: 1px solid rgba(167,139,250,0.2);
  border-radius: var(--radius-xl);
  text-align: center;
  overflow: hidden;
}

.download-glow {
  position: absolute;
  top: -60px;
  left: 50%;
  translate: -50% 0;
  width: 400px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(167,139,250,0.15) 0%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}

.download-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.download-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.download-sub {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 420px;
  line-height: 1.6;
}

/* --- Gatekeeper Section --- */
.gatekeeper {
  width: 100%;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  text-align: left;
  margin-top: 8px;
}

.gatekeeper-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  list-style: none;
  user-select: none;
  transition: color 0.2s, background 0.2s;
}

.gatekeeper-summary::-webkit-details-marker { display: none; }
.gatekeeper-summary:hover { color: var(--text-primary); background: rgba(255,255,255,0.03); }

.gatekeeper-icon { flex-shrink: 0; }

.gatekeeper-arrow {
  margin-left: auto;
  transition: rotate 0.2s;
  font-size: 12px;
  color: var(--text-muted);
}

details[open] .gatekeeper-arrow { rotate: 180deg; }

.gatekeeper-body {
  padding: 0 20px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.gatekeeper-option { display: flex; flex-direction: column; gap: 8px; }

.gatekeeper-option h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

.code-block {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 13px;
  color: var(--accent-violet);
  overflow-x: auto;
}

.code-block code { flex: 1; white-space: nowrap; }

.copy-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.2);
  border-radius: var(--radius-sm);
  color: var(--accent-violet);
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  flex-shrink: 0;
}

.copy-btn:hover { background: rgba(167,139,250,0.2); transform: translateY(-1px); }
.copy-btn:active { transform: translateY(0); }

.copy-label { min-width: 30px; }

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 48px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
}

.footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.footer-tagline {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 4px;
}

.footer-link {
  padding: 6px 14px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.footer-link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.footer-copy {
  font-size: 12px;
  color: var(--text-muted);
}

.footer-attribution {
  max-width: 760px;
  display: grid;
  gap: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-muted);
}

.footer-attribution p {
  margin: 0;
}

.footer-attribution a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-attribution a:hover {
  color: var(--text-primary);
}

/* ============================================
   Reduced Motion
   ============================================ */
@property --animation-reduced {
  syntax: "*";
  inherits: false;
  initial-value: none;
}

@media (prefers-reduced-motion: reduce) {
  .ring, .bar, .badge-dot, .hero-glow--1, .hero-glow--2 {
    animation: none !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .nav-links { display: none; }

  .hero { padding: 100px 20px 60px; }

  .step:nth-child(1),
  .step:nth-child(3) { border-radius: var(--radius-lg); }

  .download-card { padding: 36px 24px; }

  .btn--large { padding: 16px 24px; font-size: 15px; }

  .comparison-table { min-width: 1120px; }

  .comparison-table th,
  .comparison-table td { padding: 12px 14px; }

  .comparison-table th:first-child,
  .comparison-table td:first-child { width: 160px; }

  .docs-layout {
    grid-template-columns: 1fr;
  }

  .docs-nav {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .doc-panel {
    padding: 22px;
  }

  .doc-grid,
  .engine-list > div {
    grid-template-columns: 1fr;
  }

  .engine-list > div {
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; width: 100%; }
  .btn { width: 100%; justify-content: center; }
  .docs-nav { grid-template-columns: 1fr; }
  .doc-panel { padding: 18px; }
}