:root {
  --purple-50: #faf5ff;
  --purple-100: #f3e8ff;
  --purple-200: #e9d5ff;
  --purple-300: #d8b4fe;
  --purple-400: #c084fc;
  --purple-500: #a855f7;
  --purple-600: #9333ea;
  --purple-700: #7e22ce;
  --purple-800: #6b21a8;
  --purple-900: #581c87;
  --white: #ffffff;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-strong: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.45);
  --glass-shadow: 0 8px 32px rgba(147, 51, 234, 0.08), 0 2px 8px rgba(0,0,0,0.04);
  --glass-shadow-lg: 0 20px 60px rgba(147, 51, 234, 0.12), 0 4px 16px rgba(0,0,0,0.06);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --radius-full: 999px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", system-ui, sans-serif;
  color-scheme: light;
}

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

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  min-height: 100vh;
  color: var(--gray-900);
  background: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* Page background blobs */
.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.page-bg::before,
.page-bg::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
}
.page-bg::before {
  width: 600px; height: 600px;
  top: -120px; right: -100px;
  background: radial-gradient(circle, var(--purple-200), transparent 70%);
}
.page-bg::after {
  width: 500px; height: 500px;
  bottom: 10%; left: -80px;
  background: radial-gradient(circle, var(--purple-100), transparent 70%);
}

/* Liquid Glass Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 12px 0;
}
.nav-glass {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 8px;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(40px) saturate(180%);
  -webkit-backdrop-filter: blur(40px) saturate(180%);
  box-shadow: var(--glass-shadow),
    inset 0 1px 0 rgba(255,255,255,0.6),
    inset 0 -1px 0 rgba(255,255,255,0.1);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 34px; height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--purple-500), var(--purple-700));
  color: white;
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: 0 2px 8px rgba(147, 51, 234, 0.3);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: all 0.2s ease;
}
.nav-links a:hover {
  color: var(--purple-700);
  background: rgba(147, 51, 234, 0.08);
}
.nav-links a.active {
  color: var(--purple-700);
  background: rgba(147, 51, 234, 0.1);
  font-weight: 600;
}
.nav-cta {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--purple-500), var(--purple-600));
  color: white !important;
  font-weight: 600;
  font-size: 0.88rem;
  box-shadow: 0 2px 12px rgba(147, 51, 234, 0.3);
  transition: all 0.2s ease;
}
.nav-cta:hover {
  background: linear-gradient(135deg, var(--purple-600), var(--purple-700)) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(147, 51, 234, 0.4);
}

/* Sections */
.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 100px 24px;
}
.section-sm { padding: 60px 24px; }

/* Typography */
.eyebrow {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--purple-100);
  color: var(--purple-700);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
h1 {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.04em;
  font-weight: 800;
  background: linear-gradient(135deg, var(--gray-900) 20%, var(--purple-700) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
h2 {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 700;
}
h3 { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.01em; }
.subtitle {
  max-width: 600px;
  margin-top: 18px;
  color: var(--gray-500);
  font-size: 1.15rem;
  line-height: 1.7;
}
.section-heading {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}
.section-heading .subtitle { margin: 14px auto 0; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 50px;
  padding: 0 28px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: inherit;
}
.btn-primary {
  background: linear-gradient(135deg, var(--purple-500), var(--purple-600));
  color: white;
  box-shadow: 0 4px 16px rgba(147, 51, 234, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(147, 51, 234, 0.4);
}
.btn-secondary {
  background: var(--glass-bg-strong);
  color: var(--gray-800);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  background: var(--white);
  box-shadow: var(--glass-shadow);
}
.btn-lg {
  min-height: 56px;
  padding: 0 36px;
  font-size: 1.05rem;
}
.btn-white {
  background: white;
  color: var(--purple-700);
  box-shadow: var(--glass-shadow);
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--glass-shadow-lg);
}
.btn-group { display: flex; flex-wrap: wrap; gap: 14px; }

/* Glass Card */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(30px) saturate(150%);
  -webkit-backdrop-filter: blur(30px) saturate(150%);
  box-shadow: var(--glass-shadow),
    inset 0 1px 0 rgba(255,255,255,0.5);
  padding: 32px;
  transition: all 0.3s ease;
}
.glass-card:hover {
  box-shadow: var(--glass-shadow-lg),
    inset 0 1px 0 rgba(255,255,255,0.5);
  transform: translateY(-4px);
}

/* Hero */
.hero {
  min-height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 60px;
  padding-bottom: 60px;
}
.hero h1 { margin-bottom: 20px; }
.hero .subtitle { max-width: 560px; margin: 0 auto 36px; font-size: 1.2rem; }
.hero .btn-group { justify-content: center; margin-bottom: 56px; }
.hero-stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}
.hero-stat {
  min-width: 140px;
  padding: 20px 24px;
  text-align: center;
}
.hero-stat strong {
  display: block;
  font-size: 1.8rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--purple-600), var(--purple-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat span {
  color: var(--gray-500);
  font-size: 0.85rem;
  font-weight: 500;
}

/* Product Preview */
.product-preview {
  max-width: 800px;
  margin: 60px auto 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(145deg, rgba(147,51,234,0.06), rgba(147,51,234,0.02));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow-lg);
}
.preview-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 20px;
  background: rgba(255,255,255,0.5);
  border-bottom: 1px solid rgba(255,255,255,0.4);
}
.preview-dot { width: 12px; height: 12px; border-radius: 50%; }
.preview-dot:nth-child(1) { background: #ff5f57; }
.preview-dot:nth-child(2) { background: #febc2e; }
.preview-dot:nth-child(3) { background: #28c840; }
.preview-body {
  display: grid;
  grid-template-columns: 100px 1fr;
  min-height: 340px;
}
.preview-sidebar {
  padding: 16px 12px;
  background: rgba(147,51,234,0.04);
  border-right: 1px solid rgba(255,255,255,0.3);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.preview-sidebar-item {
  height: 36px;
  border-radius: 10px;
  background: rgba(147,51,234,0.08);
}
.preview-chat { padding: 28px; display: flex; flex-direction: column; gap: 14px; }
.preview-mode {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--purple-100);
  color: var(--purple-600);
  font-size: 0.78rem;
  font-weight: 700;
  width: fit-content;
}
.preview-chat h3 { font-size: 1.4rem; letter-spacing: -0.02em; }
.preview-tools { display: flex; flex-wrap: wrap; gap: 6px; }
.preview-tool {
  padding: 6px 12px;
  border-radius: 8px;
  background: var(--purple-50);
  color: var(--purple-600);
  font-size: 0.78rem;
  font-weight: 600;
}
.preview-msg {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  line-height: 1.55;
}
.preview-msg.ai {
  background: linear-gradient(135deg, rgba(147,51,234,0.08), rgba(147,51,234,0.04));
  color: var(--gray-700);
}
.preview-msg.user {
  background: var(--white);
  color: var(--gray-500);
  margin-left: 40px;
  border: 1px solid var(--gray-200);
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.feature-card { text-align: left; }
.feature-icon {
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--purple-100), var(--purple-50));
  color: var(--purple-600);
  font-size: 1.3rem;
  margin-bottom: 18px;
}
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { color: var(--gray-500); font-size: 0.92rem; line-height: 1.6; }

/* Steps / Workflow */
.steps { display: grid; gap: 18px; max-width: 720px; margin: 0 auto; }
.step-card {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  align-items: start;
}
.step-num {
  width: 52px; height: 52px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--purple-500), var(--purple-600));
  color: white;
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px rgba(147, 51, 234, 0.3);
}
.step-card h3 { margin-bottom: 6px; }
.step-card p { color: var(--gray-500); font-size: 0.92rem; line-height: 1.6; }

/* CTA Banner */
.cta-banner {
  text-align: center;
  padding: 72px 40px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--purple-600), var(--purple-800));
  color: white;
  box-shadow: 0 20px 60px rgba(147, 51, 234, 0.3);
}
.cta-banner h2 { color: white; margin-bottom: 14px; }
.cta-banner p { color: rgba(255,255,255,0.8); max-width: 500px; margin: 0 auto 32px; }
.cta-banner .btn-group { justify-content: center; }

/* Platform */
.platform-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  align-items: start;
}
.platform-text p { color: var(--gray-500); line-height: 1.7; margin-top: 16px; }
.requirements h3 { margin-bottom: 14px; }
.requirements ul { display: flex; flex-direction: column; gap: 10px; }
.requirements li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--gray-600);
  font-size: 0.92rem;
}
.requirements li::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--purple-400);
  flex-shrink: 0;
}

/* Footer */
.site-footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 24px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--gray-200);
}
.site-footer p { color: var(--gray-500); font-size: 0.9rem; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--gray-500); font-size: 0.9rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--purple-600); }

/* Download Page */
.download-hero { text-align: center; padding-top: 120px; padding-bottom: 80px; }
.download-hero h1 { margin-bottom: 16px; }
.download-hero .subtitle { margin: 0 auto 40px; }
.download-main-card {
  max-width: 560px;
  margin: 0 auto 48px;
  padding: 40px;
  text-align: center;
}
.download-main-card .app-icon {
  width: 80px; height: 80px;
  margin: 0 auto 20px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--purple-500), var(--purple-700));
  display: grid;
  place-items: center;
  font-size: 2rem;
  color: white;
  box-shadow: 0 8px 24px rgba(147, 51, 234, 0.3);
}
.download-main-card .version {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--purple-50);
  color: var(--purple-600);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.download-main-card h3 { font-size: 1.5rem; margin-bottom: 8px; }
.download-main-card p { color: var(--gray-500); margin-bottom: 24px; }
.download-reqs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 640px;
  margin: 0 auto;
}
.download-req { padding: 24px 20px; text-align: center; }
.download-req .req-icon { font-size: 1.4rem; margin-bottom: 10px; }
.download-req h4 { font-size: 0.95rem; margin-bottom: 4px; }
.download-req p { color: var(--gray-500); font-size: 0.82rem; }
.install-steps { max-width: 640px; margin: 56px auto 0; }
.install-steps h2 { text-align: center; margin-bottom: 32px; }
.install-step {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.install-step-num {
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--purple-100);
  color: var(--purple-600);
  font-weight: 700;
  font-size: 0.9rem;
}
.install-step h4 { margin-bottom: 4px; font-size: 1rem; }
.install-step p { color: var(--gray-500); font-size: 0.9rem; }
.install-step code {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 16px;
  border-radius: 10px;
  background: var(--gray-800);
  color: var(--purple-300);
  font-size: 0.88rem;
  font-family: "SF Mono", "Fira Code", monospace;
}

/* Pricing Page */
.pricing-hero { text-align: center; padding-top: 120px; padding-bottom: 40px; }
.pricing-toggle {
  display: inline-flex;
  margin: 32px auto 0;
  padding: 4px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
}
.pricing-toggle button {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  border: none;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  background: transparent;
  color: var(--gray-500);
  transition: all 0.2s;
  font-family: inherit;
}
.pricing-toggle button.active {
  background: var(--purple-600);
  color: white;
  box-shadow: 0 2px 8px rgba(147, 51, 234, 0.3);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: start;
  padding-top: 48px;
}
.pricing-card { padding: 36px 28px; position: relative; }
.pricing-card.featured {
  background: linear-gradient(145deg, rgba(147,51,234,0.08), rgba(147,51,234,0.02));
  border-color: var(--purple-200);
  box-shadow: var(--glass-shadow-lg), 0 0 0 1px var(--purple-200);
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--purple-500), var(--purple-600));
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}
.pricing-card .tier {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--purple-600);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.pricing-card .price {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 4px;
}
.pricing-card .price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray-400);
}
.pricing-card .price-note {
  color: var(--gray-500);
  font-size: 0.85rem;
  margin-bottom: 24px;
}
.pricing-card .btn { width: 100%; margin-bottom: 24px; }
.pricing-features { display: flex; flex-direction: column; gap: 12px; }
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--gray-600);
  font-size: 0.9rem;
  line-height: 1.4;
}
.pricing-features li::before {
  content: "\2713";
  color: var(--purple-500);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* Checkout Page */
.checkout-page {
  max-width: 960px;
  margin: 0 auto;
  padding: 100px 24px 80px;
}
.checkout-header { text-align: center; margin-bottom: 48px; }
.checkout-header h1 { font-size: clamp(2rem, 4vw, 3rem); }
.checkout-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 28px;
  align-items: start;
}
.checkout-form { padding: 36px; }
.form-section { margin-bottom: 28px; }
.form-section:last-child { margin-bottom: 0; }
.form-section h3 {
  font-size: 1rem;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--gray-200);
}
.form-row { display: grid; gap: 14px; margin-bottom: 14px; }
.form-row.two-col { grid-template-columns: 1fr 1fr; }
.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 6px;
}
.form-input {
  width: 100%;
  height: 46px;
  padding: 0 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
  background: var(--white);
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--gray-800);
  transition: all 0.2s;
  outline: none;
}
.form-input:focus {
  border-color: var(--purple-400);
  box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.1);
}
.form-input::placeholder { color: var(--gray-400); }
.payment-methods { display: flex; gap: 10px; margin-bottom: 18px; }
.payment-method {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--gray-200);
  background: var(--white);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  color: var(--gray-600);
}
.payment-method.active {
  border-color: var(--purple-400);
  background: var(--purple-50);
  color: var(--purple-700);
}
.checkout-summary { padding: 32px; position: sticky; top: 100px; }
.summary-plan {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--gray-200);
}
.summary-plan-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--purple-500), var(--purple-600));
  display: grid;
  place-items: center;
  color: white;
  font-size: 1.2rem;
  font-weight: 700;
}
.summary-plan-info h4 { font-size: 1rem; margin-bottom: 2px; }
.summary-plan-info span { color: var(--gray-500); font-size: 0.85rem; }
.summary-line {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 0.92rem;
  color: var(--gray-600);
}
.summary-line.total {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--gray-900);
  padding-top: 16px;
  margin-top: 8px;
  border-top: 1px solid var(--gray-200);
}
.checkout-submit { width: 100%; margin-top: 24px; min-height: 52px; font-size: 1rem; }
.secure-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 14px;
  color: var(--gray-400);
  font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .hero { min-height: auto; padding-top: 80px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; }
  .download-reqs { grid-template-columns: 1fr; max-width: 320px; margin-left: auto; margin-right: auto; }
  .checkout-grid { grid-template-columns: 1fr; }
  .checkout-summary { position: static; }
  .platform-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
  .form-row.two-col { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; align-items: center; }
  .hero-stat { width: 100%; max-width: 200px; }
  .preview-body { grid-template-columns: 1fr; }
  .preview-sidebar { display: none; }
  .site-footer { flex-direction: column; align-items: flex-start; }
  .btn-group { flex-direction: column; align-items: stretch; }
  .payment-methods { flex-direction: column; }
}