/* ── Design tokens ── */
:root {
  --bg:        #0c0c0f;
  --surface:   #111115;
  --surface-2: #18181d;
  --surface-3: #222229;

  --border:       rgba(255,255,255,0.07);
  --border-hover: rgba(255,255,255,0.14);

  --text:   #f0f0f4;
  --text-2: #9898a8;
  --text-3: #52525e;

  --purple: #a78bfa;
  --blue:   #60a5fa;
  --cyan:   #22d3ee;
  --amber:  #fbbf24;
  --green:  #34d399;

  --glow-purple: rgba(167,139,250,0.22);
  --glow-blue:   rgba(96,165,250,0.22);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(12,12,15,0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  height: 58px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 0.93rem;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.nav-icon {
  width: 26px;
  height: 26px;
  border-radius: 7px;
}

.nav-links {
  display: flex;
  gap: 24px;
  flex: 1;
}

.nav-links a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.nav-github svg { color: var(--amber); opacity: 0.9; flex-shrink: 0; }

.nav-github:hover {
  background: rgba(255,255,255,0.09);
  border-color: var(--border-hover);
  color: var(--text);
}

.nav-download {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 8px;
  background: linear-gradient(135deg, #6d28d9, #2563eb);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s, transform 0.15s;
}

.nav-download:hover { opacity: 0.85; transform: translateY(-1px); }

/* ── Hero ── */
.hero {
  position: relative;
  padding: 140px 32px 96px;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
}

.hero-glow-1 {
  width: 640px; height: 400px;
  background: radial-gradient(circle, rgba(109,40,217,0.45) 0%, transparent 70%);
  top: -120px; left: 50%;
  transform: translateX(-50%);
}

.hero-glow-2 {
  width: 400px; height: 300px;
  background: radial-gradient(circle, rgba(8,145,178,0.25) 0%, transparent 70%);
  bottom: -60px; right: 8%;
}

.hero-content {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
}

/* ── Hero badge ── */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 16px;
  border-radius: 999px;
  background: rgba(167,139,250,0.08);
  border: 1px solid rgba(167,139,250,0.22);
  color: var(--purple);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  margin-bottom: 28px;
  animation: fadeUp 0.5s ease both;
}

.hero-badge-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 6px var(--purple);
}

/* ── Hero title ── */
.hero-title {
  font-size: 4.5rem;
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--text);
  margin-bottom: 20px;
  animation: fadeUp 0.55s ease 0.06s both;
}

.gradient-text {
  background: linear-gradient(135deg, var(--purple) 0%, var(--blue) 55%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.12rem;
  color: var(--text-2);
  max-width: 540px;
  margin: 0 auto 36px;
  line-height: 1.7;
  animation: fadeUp 0.55s ease 0.12s both;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
  animation: fadeUp 0.55s ease 0.18s both;
}

.hero-note {
  color: var(--text-3);
  font-size: 0.78rem;
  margin-bottom: 52px;
  animation: fadeUp 0.55s ease 0.22s both;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s cubic-bezier(.34,1.56,.64,1), box-shadow 0.2s, opacity 0.15s;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 55%);
  pointer-events: none;
}

.btn:hover { transform: translateY(-2px) scale(1.02); }
.btn:active { transform: translateY(0) scale(0.98); }

.btn-primary {
  background: linear-gradient(135deg, #5b21b6, #1d4ed8);
  color: #fff;
  box-shadow: 0 4px 24px rgba(91,33,182,0.38);
}

.btn-primary:hover { box-shadow: 0 8px 36px rgba(91,33,182,0.5); }

.btn-secondary {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-hover);
  color: var(--text);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
}

@keyframes pulse-ring {
  0%   { box-shadow: 0 4px 24px rgba(91,33,182,0.38), 0 0 0 0 rgba(91,33,182,0.5); }
  70%  { box-shadow: 0 4px 24px rgba(91,33,182,0.38), 0 0 0 14px rgba(91,33,182,0); }
  100% { box-shadow: 0 4px 24px rgba(91,33,182,0.38), 0 0 0 0 rgba(91,33,182,0); }
}

.btn-active { animation: pulse-ring 1.8s ease-out; }

/* ── Demo card ── */
.demo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 28px 80px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.04);
  text-align: left;
  max-width: 580px;
  margin: 0 auto;
  animation: fadeUp 0.55s ease 0.28s both;
}

.demo-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}

.demo-dots { display: flex; gap: 6px; }

.dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}

.dot-red    { background: #ef4444; opacity: 0.65; }
.dot-yellow { background: #f59e0b; opacity: 0.65; }
.dot-green  { background: #10b981; opacity: 0.65; }

.demo-window-title {
  font-size: 0.72rem;
  color: var(--text-3);
  font-weight: 500;
  flex: 1;
  text-align: center;
}

.demo-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.demo-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-3);
  margin-bottom: 8px;
}

.demo-label-result { color: var(--cyan); }

.demo-text {
  font-size: 0.88rem;
  line-height: 1.55;
  padding: 12px 14px;
  border-radius: 8px;
}

.demo-selected {
  background: rgba(96,165,250,0.08);
  border: 1px solid rgba(96,165,250,0.18);
  color: var(--text-2);
}

.demo-result {
  background: rgba(34,211,238,0.05);
  border: 1px solid rgba(34,211,238,0.14);
  color: var(--text);
}

.demo-transform {
  display: flex;
  align-items: center;
  gap: 10px;
}

.demo-key {
  font-size: 0.78rem !important;
  padding: 3px 9px !important;
}

.demo-arrow-icon { color: var(--text-3); flex-shrink: 0; }

.demo-transform-label {
  font-size: 0.75rem;
  color: var(--text-3);
}

/* ── Keyboard key ── */
.key {
  display: inline-block;
  background: var(--surface-3);
  border: 1px solid rgba(255,255,255,0.12);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 2px 7px;
  font-family: 'SF Mono', 'Cascadia Code', monospace;
  font-size: 0.75rem;
  color: var(--amber);
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

/* ── Providers bar ── */
.providers-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 18px 32px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-wrap: wrap;
}

.providers-label {
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 500;
  white-space: nowrap;
}

.providers-list {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.provider-badge {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-2);
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
}

.provider-muted {
  color: var(--text-3);
  font-weight: 400;
  background: transparent;
  border-color: transparent;
  padding: 0;
  font-size: 0.75rem;
}

.provider-sep { color: var(--text-3); font-size: 0.72rem; }

/* ── Main layout ── */
main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px 120px;
}

/* ── Section commons ── */
.section-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--purple);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.2;
}

.section-desc {
  font-size: 0.975rem;
  color: var(--text-2);
  max-width: 460px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── How it works ── */
.how-section { padding: 100px 0 80px; }

.how-steps {
  display: grid;
  grid-template-columns: 1fr 48px 1fr 48px 1fr;
  align-items: start;
}

.how-connector {
  height: 2px;
  background: linear-gradient(to right, rgba(167,139,250,0.3), rgba(167,139,250,0.1));
  margin-top: 44px;
  align-self: flex-start;
}

.how-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 28px 20px;
  border-radius: 16px;
  transition: background 0.2s;
}

.how-step:hover { background: rgba(255,255,255,0.02); }

.how-step-icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  background: rgba(167,139,250,0.07);
  border: 1px solid rgba(167,139,250,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--purple);
}

.how-step-num {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-3);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.how-step h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.how-step p {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* ── Shortcuts ── */
.shortcuts-section { padding: 0 0 80px; }

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

.shortcut-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  transition: border-color 0.2s, background 0.2s, transform 0.22s cubic-bezier(.34,1.56,.64,1);
}

.shortcut-card:hover {
  border-color: var(--border-hover);
  background: rgba(255,255,255,0.04);
  transform: translateY(-3px);
}

.shortcut-card-featured {
  background: rgba(167,139,250,0.04);
  border-color: rgba(167,139,250,0.18);
}

.shortcut-card-featured:hover {
  border-color: rgba(167,139,250,0.36);
  background: rgba(167,139,250,0.07);
}

.shortcut-key-badge {
  display: inline-flex;
  width: 46px; height: 46px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  font-family: 'SF Mono', 'Cascadia Code', monospace;
  margin-bottom: 20px;
}

.badge-amber {
  background: rgba(251,191,36,0.1);
  border: 1px solid rgba(251,191,36,0.22);
  color: var(--amber);
}

.badge-green {
  background: rgba(52,211,153,0.08);
  border: 1px solid rgba(52,211,153,0.2);
  color: var(--green);
}

.badge-purple {
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.22);
  color: var(--purple);
}

.shortcut-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.shortcut-card p {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 20px;
}

.shortcut-platforms {
  font-size: 0.75rem;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

/* ── Usage section ── */
.usage-section { padding: 0 0 80px; }

.usage-cards {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.usage-card {
  display: flex;
  gap: 20px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px 24px;
  transition: border-color 0.2s, background 0.2s, transform 0.22s cubic-bezier(.34,1.56,.64,1);
}

.usage-card:hover {
  border-color: var(--border-hover);
  background: rgba(255,255,255,0.04);
  transform: translateY(-2px);
}

.usage-card.highlight {
  background: rgba(167,139,250,0.03);
  border-color: rgba(167,139,250,0.18);
}

.usage-card.highlight:hover {
  border-color: rgba(167,139,250,0.32);
  background: rgba(167,139,250,0.06);
}

.usage-icon {
  flex-shrink: 0;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--surface-3);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: 'SF Mono', 'Cascadia Code', monospace;
  color: var(--amber);
  margin-top: 2px;
  transition: transform 0.22s cubic-bezier(.34,1.56,.64,1);
}

.usage-card:hover .usage-icon { transform: scale(1.1); }

.usage-card.highlight .usage-icon {
  background: rgba(167,139,250,0.12);
  border-color: rgba(167,139,250,0.25);
  color: var(--purple);
}

.usage-body { flex: 1; min-width: 0; }

.usage-body h3 {
  font-size: 0.975rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.usage-body p {
  color: var(--text-2);
  font-size: 0.9rem;
  margin-bottom: 10px;
  line-height: 1.6;
}

.usage-body p:last-child { margin-bottom: 0; }

/* ── Features ── */
.features-section { padding: 0 0 80px; }

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.feature-item {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  transition: border-color 0.2s, background 0.2s, transform 0.22s cubic-bezier(.34,1.56,.64,1);
}

.feature-item:hover {
  border-color: var(--border-hover);
  background: rgba(255,255,255,0.04);
  transform: translateY(-2px);
}

.feature-item h3 {
  font-size: 0.925rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.feature-item p, .feature-item ul, .feature-item ol {
  font-size: 0.86rem;
  color: var(--text-2);
  line-height: 1.65;
}

.provider-list {
  list-style: none;
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.provider-list li {
  font-size: 0.82rem;
  color: var(--text-2);
  padding-left: 14px;
  position: relative;
}

.provider-list li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-3);
}

.how-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 4px;
  counter-reset: how;
}

.how-list li {
  font-size: 0.86rem;
  color: var(--text-2);
  padding-left: 22px;
  position: relative;
  counter-increment: how;
}

.how-list li::before {
  content: counter(how) '.';
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-weight: 700;
  font-size: 0.8rem;
}

/* ── Code blocks ── */
pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--cyan);
  border-radius: 10px;
  padding: 13px 44px 13px 16px;
  margin-bottom: 10px;
  overflow-x: auto;
  position: relative;
  transition: border-left-color 0.2s;
}

pre:hover { border-left-color: var(--purple); }

code {
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
  font-size: 0.8rem;
  color: var(--cyan);
}

.hint {
  color: var(--text-2) !important;
  font-size: 0.82rem !important;
  margin-bottom: 0 !important;
}

/* ── Copy button ── */
.copy-btn {
  position: absolute;
  top: 6px; right: 6px;
  background: transparent;
  border: none;
  color: var(--text-3);
  width: 28px; height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.15s;
  padding: 0;
  border-radius: 4px;
}

.copy-btn:hover { color: var(--text); }

.copy-btn svg {
  width: 14px; height: 14px;
  stroke-width: 2;
}

/* ── Setup / Getting started ── */
.setup-section { padding: 0 0 80px; }


.steps { display: flex; flex-direction: column; gap: 4px; }
.steps[hidden] { display: none; }

.code-block { margin-bottom: 10px; }
.code-block pre { margin-bottom: 0; border-top-left-radius: 0; border-top-right-radius: 0; border-top: none; }
.code-block-header {
  display: flex;
  gap: 4px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 10px 10px 0 0;
  padding: 5px 8px;
}
.code-tab {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text-2);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s, color 0.18s;
}
.code-tab:hover { color: var(--text); }
.code-tab.active {
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: #fff;
  box-shadow: 0 1px 6px var(--glow-purple);
}

.step {
  display: flex;
  gap: 24px;
  padding: 22px 20px;
  border-radius: 16px;
  transition: background 0.2s;
}

.step:hover { background: rgba(255,255,255,0.02); }

.step-number {
  flex-shrink: 0;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: #fff;
  font-weight: 700;
  font-size: 0.83rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px var(--glow-purple);
  margin-top: 2px;
}

.step-content { flex: 1; min-width: 0; }

.step-content h3 {
  font-size: 0.975rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.step-content p {
  color: var(--text-2);
  font-size: 0.9rem;
  margin-bottom: 10px;
  line-height: 1.6;
}

/* ── CTA section ── */
.cta-section { padding: 0 0 0; }

.cta-card {
  background: linear-gradient(135deg,
    rgba(109,40,217,0.08) 0%,
    rgba(37,99,235,0.06) 50%,
    rgba(8,145,178,0.04) 100%
  );
  border: 1px solid rgba(167,139,250,0.18);
  border-radius: 24px;
  padding: 64px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(167,139,250,0.1), transparent);
  pointer-events: none;
}

.cta-icon {
  width: 80px; height: 80px;
  border-radius: 20px;
  margin-bottom: 24px;
  box-shadow: 0 14px 44px rgba(0,0,0,0.5);
  animation: floatIcon 4s ease-in-out infinite;
  position: relative;
}

.cta-title {
  font-size: 2rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.025em !important;
  color: var(--text) !important;
  margin-bottom: 12px !important;
  text-transform: none !important;
  line-height: 1.2 !important;
}

.cta-desc {
  color: var(--text-2);
  font-size: 1rem;
  margin-bottom: 32px;
}

.buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.note {
  font-size: 0.78rem;
  color: var(--text-3);
}

/* ── Footer ── */
footer {
  text-align: center;
  color: var(--text-3);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  padding: 32px 32px 48px;
  margin-top: 80px;
}

footer a {
  color: var(--text-2);
  text-decoration: none;
  transition: color 0.15s;
}

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

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes floatIcon {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-7px); }
}

/* ── Scroll reveal ── */
.scroll-reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.scroll-reveal.delay-1 { transition-delay: 0.1s; }
.scroll-reveal.delay-2 { transition-delay: 0.2s; }
.scroll-reveal.delay-3 { transition-delay: 0.3s; }

/* ── Responsive ── */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-download { display: none; }

  .how-steps {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .how-connector { display: none; }

  .shortcuts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hero { padding: 100px 20px 72px; }
  .hero-title { font-size: 2.6rem; letter-spacing: -0.025em; }
  .hero-desc { font-size: 1rem; }

  main { padding: 0 20px 80px; }

  .section-header h2 { font-size: 1.75rem; }

  .feature-grid { grid-template-columns: 1fr; }

  .usage-card { padding: 18px 18px; }
  .usage-card { gap: 14px; }

  .step { padding: 18px 16px; }

  .cta-card { padding: 40px 24px; }
}

@media (max-width: 420px) {
  .hero-title { font-size: 2.1rem; }
  .demo-card { display: none; }
  .hero-note { margin-bottom: 20px; }
}