/* ========================================
   THE RESEARCH INSIDER — Global Styles
   ======================================== */

/* === Fonts === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Instrument+Serif:ital@0;1&display=swap');

/* === CSS Variables === */
:root {
  --color-bg: #ffffff;
  --color-surface: #f8f9fa;
  --color-surface-2: #f1f3f5;
  --color-border: #e9ecef;
  --color-border-strong: #dee2e6;
  --color-text: #0d1117;
  --color-text-secondary: #4a5568;
  --color-text-muted: #868e96;
  --color-accent: #1a56db;
  --color-accent-light: #ebf0fe;
  --color-accent-hover: #1645b5;
  --color-success: #0ca678;
  --color-success-light: #e6fcf5;
  --color-warning: #f08c00;
  --color-warning-light: #fff9db;
  --color-danger: #e03131;
  --color-danger-light: #fff5f5;
  --color-gold: #f59f00;
  --color-gradient-start: #1a56db;
  --color-gradient-end: #6c3fc5;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.15);
  --shadow-accent: 0 4px 14px rgba(26, 86, 219, 0.25);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;

  --transition: 0.2s ease;
  --transition-slow: 0.35s ease;

  --max-width: 1200px;
  --container-px: 24px;

  --nav-height: 68px;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }
ul, ol { list-style: none; }

/* === Container === */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-px);
}
.container--narrow { max-width: 800px; }
.container--wide { max-width: 1400px; }

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
h1 { font-size: clamp(2.4rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.35rem, 2vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

.text-serif { font-family: var(--font-serif); font-style: italic; }
.text-gradient {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 6px 20px rgba(26, 86, 219, 0.35);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-surface-2);
  border-color: var(--color-border-strong);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn-outline:hover {
  background: var(--color-accent-light);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}
.btn-ghost:hover { background: var(--color-surface); color: var(--color-text); }
.btn-success {
  background: var(--color-success);
  color: #fff;
  box-shadow: 0 4px 14px rgba(12, 166, 120, 0.25);
}
.btn-success:hover {
  background: #099268;
  transform: translateY(-1px);
}
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-sm { padding: 8px 16px; font-size: 0.8125rem; }
.btn-xl { padding: 17px 36px; font-size: 1.0625rem; }
.btn-full { width: 100%; }
.btn-icon { padding: 10px; }

/* === Navigation === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-slow);
}
.nav.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.nav__logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav__link {
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition);
}
.nav__link:hover, .nav__link.active {
  color: var(--color-text);
  background: var(--color-surface);
}
.nav__link--highlight {
  background: var(--color-accent);
  color: #fff !important;
  padding: 7px 16px;
  border-radius: var(--radius-full);
}
.nav__link--highlight:hover {
  background: var(--color-accent-hover) !important;
}
.nav__cta { margin-left: 8px; }
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}
.nav__toggle:hover { background: var(--color-surface); }
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 16px var(--container-px) 24px;
  z-index: 999;
  box-shadow: var(--shadow-lg);
}
.nav__mobile.open { display: block; }
.nav__mobile-links { display: flex; flex-direction: column; gap: 4px; margin-bottom: 16px; }
.nav__mobile-link {
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition);
}
.nav__mobile-link:hover { background: var(--color-surface); color: var(--color-text); }

/* === Hero === */
.hero {
  padding-top: calc(var(--nav-height) + 80px);
  padding-bottom: 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(26, 86, 219, 0.08), transparent 70%);
  pointer-events: none;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 28px;
  border: 1px solid rgba(26, 86, 219, 0.15);
  animation: fadeInDown 0.6s ease;
}
.hero__title {
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease 0.1s both;
}
.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-text-secondary);
  max-width: 620px;
  margin: 0 auto 40px;
  line-height: 1.65;
  animation: fadeInUp 0.6s ease 0.2s both;
}
.hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}
.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-top: 72px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.4s both;
}
.hero__stat { text-align: center; }
.hero__stat-number {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: 4px;
}
.hero__stat-label {
  font-size: 0.825rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.hero__divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

/* === Section Styles === */
.section {
  padding: 96px 0;
}
.section--sm { padding: 64px 0; }
.section--lg { padding: 120px 0; }
.section--gray { background: var(--color-surface); }
.section--dark {
  background: var(--color-text);
  color: #fff;
}
.section__header {
  text-align: center;
  margin-bottom: 60px;
}
.section__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.section__title { margin-bottom: 16px; }
.section__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.65;
}

/* === Cards === */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: all var(--transition-slow);
}
.card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.card--featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

/* === Platform Cards === */
.platform-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.platform-card:hover {
  border-color: rgba(26, 86, 219, 0.3);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.platform-card--top-pick {
  border-color: var(--color-gold);
  background: linear-gradient(to bottom right, #fffbeb, #ffffff);
}
.platform-card__top-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--color-gold);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.platform-card__header { display: flex; align-items: center; gap: 14px; }
.platform-card__logo {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  font-size: 1.5rem;
}
.platform-card__logo img { width: 100%; height: 100%; object-fit: contain; }
.platform-card__name { font-size: 1.05rem; font-weight: 700; margin-bottom: 3px; }
.platform-card__best-for {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.platform-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}
.platform-card__meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.platform-card__meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.platform-card__meta-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.platform-card__meta-value {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}
.platform-card__actions { display: flex; gap: 8px; margin-top: auto; }
.platform-card__actions .btn { flex: 1; font-size: 0.875rem; padding: 10px 16px; }

/* === Star Rating === */
.stars {
  display: inline-flex;
  gap: 2px;
  align-items: center;
}
.star { color: #e9ecef; font-size: 0.9rem; }
.star.filled { color: var(--color-gold); }
.star.half { position: relative; color: #e9ecef; }
.star.half::before {
  content: '★';
  position: absolute;
  left: 0;
  color: var(--color-gold);
  width: 50%;
  overflow: hidden;
}

/* === Badge === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-blue { background: var(--color-accent-light); color: var(--color-accent); }
.badge-green { background: var(--color-success-light); color: var(--color-success); }
.badge-yellow { background: var(--color-warning-light); color: var(--color-warning); }
.badge-red { background: var(--color-danger-light); color: var(--color-danger); }
.badge-gray { background: var(--color-surface-2); color: var(--color-text-secondary); }

/* === Blog Cards === */
.blog-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-slow);
}
.blog-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.blog-card__image {
  height: 200px;
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-2));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--color-text-muted);
  font-size: 2.5rem;
}
.blog-card__image img { width: 100%; height: 100%; object-fit: cover; }
.blog-card__body { padding: 20px; flex: 1; display: flex; flex-direction: column; gap: 10px; }
.blog-card__category { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--color-accent); }
.blog-card__title { font-size: 1.05rem; font-weight: 700; line-height: 1.3; transition: color var(--transition); }
.blog-card:hover .blog-card__title { color: var(--color-accent); }
.blog-card__excerpt { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.55; flex: 1; }
.blog-card__footer { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; border-top: 1px solid var(--color-border); margin-top: auto; }
.blog-card__date { font-size: 0.78rem; color: var(--color-text-muted); font-weight: 500; }
.blog-card__read-more { font-size: 0.8rem; font-weight: 600; color: var(--color-accent); display: flex; align-items: center; gap: 4px; }

/* === Grid Layouts === */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }

/* === How It Works === */
.steps { counter-reset: step-counter; display: flex; flex-direction: column; gap: 0; }
.step {
  display: flex;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border);
}
.step:last-child { border-bottom: none; }
.step__number {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step__content { flex: 1; }
.step__title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.step__desc { color: var(--color-text-secondary); font-size: 0.9375rem; line-height: 1.6; }

/* === Feature Grid === */
.feature-item {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 28px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-slow);
}
.feature-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
}
.feature-item__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.feature-item__title { font-size: 1rem; font-weight: 700; }
.feature-item__desc { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; }

/* === Testimonial / Trust === */
.trust-box {
  background: linear-gradient(135deg, #f0f4ff, #f8f0ff);
  border: 1px solid rgba(26, 86, 219, 0.12);
  border-radius: var(--radius-xl);
  padding: 40px;
  text-align: center;
}

/* === FAQ === */
.faq-list { display: flex; flex-direction: column; gap: 0; }
.faq-item {
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}
.faq-item:first-child { border-top: 1px solid var(--color-border); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 0;
  font-weight: 600;
  font-size: 0.9875rem;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--color-accent); }
.faq-question__icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: transform var(--transition), background var(--transition);
}
.faq-item.open .faq-question__icon {
  transform: rotate(45deg);
  background: var(--color-accent-light);
  color: var(--color-accent);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer__inner {
  padding-bottom: 20px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === Newsletter === */
.newsletter {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  border-radius: var(--radius-2xl);
  padding: 60px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.newsletter::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 300px;
  height: 300px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}
.newsletter::after {
  content: '';
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 200px;
  height: 200px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}
.newsletter__title { color: #fff; margin-bottom: 12px; }
.newsletter__subtitle { color: rgba(255,255,255,0.8); margin-bottom: 32px; font-size: 1rem; }
.newsletter__form {
  display: flex;
  gap: 10px;
  max-width: 440px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.newsletter__form input {
  flex: 1;
  padding: 13px 20px;
  border-radius: var(--radius-full);
  border: none;
  font-size: 0.9375rem;
  outline: none;
  background: rgba(255,255,255,0.15);
  color: #fff;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.2);
}
.newsletter__form input::placeholder { color: rgba(255,255,255,0.6); }
.newsletter__form input:focus { background: rgba(255,255,255,0.25); border-color: rgba(255,255,255,0.4); }
.newsletter__form button {
  background: #fff;
  color: var(--color-accent);
  border: none;
  padding: 13px 24px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9375rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
}
.newsletter__form button:hover { background: rgba(255,255,255,0.9); transform: translateY(-1px); }
.newsletter__disclaimer { font-size: 0.78rem; color: rgba(255,255,255,0.6); margin-top: 14px; }

/* === YouTube Videos === */
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.video-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-slow);
}
.video-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.video-thumb {
  position: relative;
  padding-bottom: 56.25%;
  background: var(--color-surface);
  overflow: hidden;
}
.video-thumb img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; }
.video-thumb__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  background: rgba(0,0,0,0.7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
}
.video-info { padding: 14px; }
.video-info__title { font-size: 0.9rem; font-weight: 600; line-height: 1.4; }

/* === Footer === */
.footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.85);
  padding: 64px 0 40px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer__brand-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer__brand-desc { font-size: 0.875rem; line-height: 1.65; color: rgba(255,255,255,0.6); }
.footer__heading { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.4); margin-bottom: 16px; }
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__link { font-size: 0.875rem; color: rgba(255,255,255,0.65); transition: color var(--transition); }
.footer__link:hover { color: #fff; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 28px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer__copyright { font-size: 0.8125rem; color: rgba(255,255,255,0.4); }
.footer__legal { display: flex; gap: 20px; }
.footer__legal a { font-size: 0.8125rem; color: rgba(255,255,255,0.4); transition: color var(--transition); }
.footer__legal a:hover { color: rgba(255,255,255,0.8); }
.footer__disclosure {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.6;
  margin-bottom: 28px;
}

/* === Breadcrumb === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}
.breadcrumb a { color: var(--color-text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb__sep { color: var(--color-border-strong); }

/* === Page Header === */
.page-header {
  padding-top: calc(var(--nav-height) + 60px);
  padding-bottom: 64px;
  background: linear-gradient(to bottom, var(--color-surface), var(--color-bg));
}
.page-header--center { text-align: center; }
.page-header__label { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 12px; display: block; }
.page-header__title { margin-bottom: 16px; }
.page-header__subtitle { font-size: 1.05rem; color: var(--color-text-secondary); line-height: 1.65; max-width: 600px; }

/* === Comparison Table === */
.comparison-table { width: 100%; border-collapse: collapse; }
.comparison-table th {
  background: var(--color-surface);
  padding: 14px 18px;
  text-align: left;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}
.comparison-table td {
  padding: 14px 18px;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tr:hover td { background: var(--color-surface); }
.table-wrapper { border: 1px solid var(--color-border); border-radius: var(--radius-xl); overflow: hidden; }

/* === Callout / Alert === */
.callout {
  display: flex;
  gap: 14px;
  padding: 18px 22px;
  border-radius: var(--radius-lg);
  border-left: 4px solid;
}
.callout-info { background: var(--color-accent-light); border-color: var(--color-accent); }
.callout-success { background: var(--color-success-light); border-color: var(--color-success); }
.callout-warning { background: var(--color-warning-light); border-color: var(--color-warning); }
.callout__icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 2px; }
.callout__text { font-size: 0.9375rem; line-height: 1.6; }
.callout__text strong { display: block; margin-bottom: 4px; }

/* === Sticky CTA === */
.sticky-cta {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 998;
  display: none;
}
.sticky-cta.visible { display: flex; }

/* === Animations === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.animate-fade-in { animation: fadeIn 0.5s ease; }
.animate-fade-up { animation: fadeInUp 0.5s ease; }
[data-animate] { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-animate].visible { opacity: 1; transform: translateY(0); }
[data-animate-delay="1"] { transition-delay: 0.1s; }
[data-animate-delay="2"] { transition-delay: 0.2s; }
[data-animate-delay="3"] { transition-delay: 0.3s; }
[data-animate-delay="4"] { transition-delay: 0.4s; }

/* === Utility === */
.mt-auto { margin-top: auto; }
.mb-0 { margin-bottom: 0; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-40 { margin-bottom: 40px; }
.mb-48 { margin-bottom: 48px; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.gap-32 { gap: 32px; }
.flex-wrap { flex-wrap: wrap; }
.w-full { width: 100%; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* === Loading Skeleton === */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface) 25%, var(--color-surface-2) 50%, var(--color-surface) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes skeleton-shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}

/* === Toast === */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 99999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}
.toast {
  padding: 13px 20px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  animation: fadeInUp 0.3s ease;
  white-space: nowrap;
  max-width: 90vw;
}
.toast-success { background: #0d1117; color: #fff; }
.toast-error { background: #e03131; color: #fff; }

/* === Responsive === */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero__stats { gap: 24px; }
}
@media (max-width: 768px) {
  :root { --container-px: 16px; }
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero { padding-top: calc(var(--nav-height) + 48px); padding-bottom: 64px; }
  .section { padding: 72px 0; }
  .newsletter { padding: 40px 24px; }
  .newsletter__form { flex-direction: column; }
  .newsletter__form input, .newsletter__form button { border-radius: var(--radius-lg); }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { text-align: center; justify-content: center; }
  .hero__stats { gap: 20px; }
  .hero__divider { height: 30px; }
  .trust-box { padding: 28px 20px; }
}
@media (max-width: 480px) {
  .hero__stats { flex-direction: column; gap: 16px; }
  .hero__divider { display: none; }
  .platform-card__actions { flex-direction: column; }
}

/* === Print === */
@media print {
  .nav, .sticky-cta, .newsletter { display: none; }
  body { font-size: 14px; }
}