/* ==========================================
   RIKU LANDING PAGE
   Theme: Green (#166534, #15803d, #22c55e)
   Highlight: Blue (#2563eb, #3b82f6)
   ========================================== */

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

:root {
  --green-950: #052e16;
  --green-900: #14532d;
  --green-800: #166534;
  --green-700: #15803d;
  --green-600: #16a34a;
  --green-500: #22c55e;
  --green-400: #4ade80;
  --green-300: #86efac;
  --green-200: #bbf7d0;
  --green-100: #dcfce7;
  --green-50: #f0fdf4;
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-400: #60a5fa;
  --blue-100: #dbeafe;
  --blue-50: #eff6ff;
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.10);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; color: var(--gray-900); }
h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); text-align: center; margin-bottom: .5rem; }
h3 { font-size: 1.15rem; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

section { padding: 5rem 1.5rem; }

.section-sub {
  text-align: center;
  color: var(--gray-500);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* --- NAV --- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  padding: 0 1.5rem;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-logo { width: 36px; height: 36px; border-radius: 50%; }
.nav-name { font-weight: 700; font-size: 1.25rem; color: var(--gray-900); }
.nav-cta {
  background: var(--green-600);
  color: var(--white);
  padding: 8px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .9rem;
  transition: background .2s;
}
.nav-cta:hover { background: var(--green-700); }

/* --- HERO --- */
.hero {
  background: linear-gradient(170deg, var(--green-50) 0%, var(--white) 50%, var(--blue-50) 100%);
  padding: 4rem 1.5rem 6rem;
}
.hero-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-badge {
  display: inline-block;
  background: var(--green-100);
  color: var(--green-800);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}
.hero-text h1 {
  margin-bottom: .3rem;
}
.hero-sub {
  font-size: 1.25rem;
  color: var(--green-700);
  font-weight: 600;
  margin-bottom: 1.25rem;
}
.hero-body {
  color: var(--gray-600);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 2rem;
}
.hero-actions {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  align-items: flex-start;
}
.hero-guarantee {
  font-size: .9rem;
  color: var(--green-700);
  font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: none;
  cursor: pointer;
  transition: all .2s;
  text-align: center;
}
.btn-primary {
  background: var(--green-600);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--green-700);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(22,163,74,.3);
}
.btn-lg { padding: 16px 40px; font-size: 1.1rem; }
.btn-sm { padding: 8px 20px; font-size: .85rem; background: var(--blue-600); color: var(--white); border-radius: 999px; font-weight: 600; cursor: pointer; border: none; }
.btn-sm:hover { background: var(--blue-500); }

/* --- CHAT PREVIEW --- */
.chat-preview {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  max-width: 400px;
}
.chat-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--green-600);
  color: var(--white);
}
.chat-header strong { font-size: .95rem; }
.chat-header small { display: block; font-size: .75rem; opacity: .85; }
.chat-avatar { width: 40px; height: 40px; border-radius: 50%; border: 2px solid var(--white); }
.chat-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 280px;
  background: #f8faf8;
}
.msg {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: .88rem;
  line-height: 1.5;
  max-width: 85%;
  word-wrap: break-word;
}
.msg.riku {
  background: var(--white);
  border: 1px solid var(--gray-200);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.msg.student {
  background: var(--green-500);
  color: var(--white);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.msg.typing {
  background: var(--gray-200);
  align-self: flex-start;
  width: 40px;
  border-radius: 999px;
  padding: 8px 12px;
  animation: pulse 1.4s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: .4; }
  50% { opacity: 1; }
}

/* --- COMPARE --- */
.compare {
  background: var(--white);
}
.compare-table-wrap {
  max-width: 850px;
  margin: 0 auto;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .95rem;
}
.compare-table thead th {
  padding: 16px 20px;
  text-align: left;
  font-weight: 700;
}
.compare-table thead th:first-child { background: var(--gray-50); }
.col-human { background: #fef2f2; color: #991b1b; }
.col-riku { background: var(--green-50); color: var(--green-900); }
.compare-table tbody td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--gray-100);
}
.compare-table tbody td:first-child {
  font-weight: 600;
  color: var(--gray-700);
}
.highlight {
  font-weight: 700;
  background: var(--green-100) !important;
}

/* --- HOW IT WORKS --- */
.how {
  background: var(--gray-50);
}
.steps {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.step {
  flex: 1;
  text-align: center;
  padding: 1.5rem;
}
.step-num {
  width: 48px;
  height: 48px;
  background: var(--green-600);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  margin: 0 auto 1rem;
}
.step h3 { margin-bottom: .5rem; }
.step p { color: var(--gray-600); font-size: .9rem; line-height: 1.6; }
.step-arrow {
  font-size: 1.5rem;
  color: var(--green-400);
  padding-top: 2.5rem;
  font-weight: 700;
}

/* --- PEDAGOGY --- */
.pedagogy {
  background: var(--white);
}
.pedagogy-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.ped-card {
  text-align: center;
  padding: 1.5rem 1rem;
  background: var(--green-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--green-200);
  transition: transform .2s;
}
.ped-card:hover { transform: translateY(-4px); }
.ped-icon { font-size: 2rem; margin-bottom: .75rem; }
.ped-card h3 { font-size: 1rem; margin-bottom: .5rem; color: var(--green-900); }
.ped-card p { font-size: .85rem; color: var(--gray-600); line-height: 1.6; }

/* --- PRICING --- */
.pricing {
  background: var(--gray-50);
}
.why-gated {
  max-width: 700px;
  margin: 0 auto 3rem;
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
}
.why-gated h4 { color: var(--blue-600); margin-bottom: .5rem; }
.why-gated p { color: var(--gray-700); font-size: .9rem; line-height: 1.6; }

.pricing-cards {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.price-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  gap: .75rem;
  transition: transform .2s, box-shadow .2s;
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.price-card.popular {
  border: 2px solid var(--green-500);
  position: relative;
  transform: scale(1.03);
}
.price-card.popular:hover { transform: scale(1.03) translateY(-4px); }
.price-badge {
  font-size: .8rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.popular-badge { color: var(--green-700); }
.price-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
}
.price-amount span { font-size: 1rem; font-weight: 500; color: var(--gray-500); }
.price-sessions { font-size: .95rem; color: var(--gray-700); }
.price-per { font-size: .85rem; color: var(--green-700); font-weight: 600; }
.price-features {
  list-style: none;
  font-size: .88rem;
  color: var(--gray-600);
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin: .5rem 0;
  flex: 1;
}
.price-features li { line-height: 1.5; }
.price-card .btn { width: 100%; }

/* --- DASHBOARD PREVIEW --- */
.dashboard-preview {
  background: var(--gray-900);
  color: var(--white);
}
.dashboard-preview h2 { color: var(--white); }
.dashboard-preview .section-sub { color: var(--gray-400); }

.dash-mockup {
  max-width: 550px;
  margin: 0 auto;
  background: var(--gray-800);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.dash-topbar {
  background: var(--green-700);
  padding: 14px 20px;
  font-weight: 700;
  font-size: .95rem;
}
.dash-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--gray-700);
}
.dash-stat {
  padding: 20px;
  text-align: center;
  background: var(--gray-800);
}
.dash-stat-num { font-size: 2rem; font-weight: 800; color: var(--green-400); }
.dash-stat-label { font-size: .8rem; color: var(--gray-400); }

.dash-subjects { padding: 16px 20px; display: flex; flex-direction: column; gap: 10px; }
.dash-subject { display: flex; align-items: center; gap: 10px; }
.dash-subj-name { width: 110px; font-size: .8rem; color: var(--gray-300); text-align: right; flex-shrink: 0; }
.dash-bar {
  flex: 1;
  height: 24px;
  background: var(--gray-700);
  border-radius: 999px;
  overflow: hidden;
}
.dash-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green-600), var(--green-400));
  border-radius: 999px;
  font-size: .7rem;
  color: var(--white);
  display: flex;
  align-items: center;
  padding-left: 10px;
  font-weight: 600;
  min-width: fit-content;
  white-space: nowrap;
}

.dash-topics { padding: 0 20px 12px; display: flex; flex-direction: column; gap: 6px; }
.dash-topics strong { font-size: .85rem; color: var(--gray-300); }
.dash-topic { font-size: .82rem; padding: 6px 10px; border-radius: 6px; }
.dash-topic.done { color: var(--green-400); background: rgba(34,197,94,.1); }
.dash-topic.active { color: var(--blue-400); background: rgba(59,130,246,.1); }

.dash-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--gray-700);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .88rem;
}
.dash-footer strong { color: var(--green-400); }

/* --- FAQ --- */
.faq { background: var(--white); }
.faq-grid {
  max-width: 750px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq-item summary {
  padding: 16px 20px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--gray-800);
}
.faq-item summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--green-600);
  font-weight: 400;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item p {
  padding: 0 20px 16px;
  color: var(--gray-600);
  font-size: .9rem;
  line-height: 1.7;
}

/* --- CTA --- */
.cta {
  background: linear-gradient(135deg, var(--green-800), var(--green-600));
  text-align: center;
  color: var(--white);
}
.cta h2 { color: var(--white); }
.cta p { color: var(--green-200); font-size: 1.1rem; margin-bottom: 2rem; }
.cta .btn-primary {
  background: var(--white);
  color: var(--green-800);
}
.cta .btn-primary:hover {
  background: var(--green-50);
  box-shadow: 0 4px 20px rgba(255,255,255,.2);
}

/* --- FOOTER --- */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 3rem 1.5rem;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-logo { width: 32px; height: 32px; border-radius: 50%; }
.footer-brand span { font-weight: 700; font-size: 1.1rem; color: var(--white); }
.footer-text p { font-size: .9rem; font-style: italic; }
.footer-small { font-size: .8rem !important; color: var(--gray-500); font-style: normal !important; margin-top: .25rem; }

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .hero-visual { order: -1; }
  .chat-preview { max-width: 100%; }
  .steps {
    flex-direction: column;
    align-items: center;
  }
  .step-arrow { transform: rotate(90deg); padding-top: 0; }
  .pedagogy-grid { grid-template-columns: 1fr 1fr; }
  .pricing-cards { grid-template-columns: 1fr; }
  .price-card.popular { transform: none; }
  .price-card.popular:hover { transform: translateY(-4px); }
  .compare-table { font-size: .82rem; }
  .compare-table thead th, .compare-table tbody td { padding: 10px 12px; }
}
@media (max-width: 480px) {
  .pedagogy-grid { grid-template-columns: 1fr; }
  section { padding: 3rem 1rem; }
  .hero { padding: 2rem 1rem 3rem; }
}

/* --- INFRASTRUCTURE COMPARISON --- */
.infra { background: var(--gray-50); }
.infra-compare {
  max-width: 1000px;
  margin: 3rem auto 2rem;
  display: flex;
  align-items: stretch;
  gap: 0;
}
.infra-card {
  flex: 1;
  padding: 2.5rem 2rem;
  border-radius: var(--radius);
}
.infra-without {
  background: var(--white);
  border: 2px solid var(--gray-200);
}
.infra-with {
  background: linear-gradient(135deg, var(--green-50), var(--white));
  border: 2px solid var(--green-300);
}
.infra-label {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 1rem;
  color: var(--gray-800);
}
.infra-with .infra-label { color: var(--green-800); }
.infra-price {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 1.5rem;
}
.infra-price span { font-size: 1rem; font-weight: 500; color: var(--gray-500); }
.infra-with .infra-price { color: var(--green-800); }
.infra-with .infra-price span { color: var(--green-600); }
.infra-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.infra-list li {
  font-size: .92rem;
  color: var(--gray-700);
  line-height: 1.5;
}
.infra-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  flex-shrink: 0;
}
.infra-vs {
  background: var(--green-600);
  color: white;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: .8rem;
  z-index: 1;
}
.infra-note {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.8;
  padding: 1.5rem;
  background: var(--green-50);
  border-radius: var(--radius);
  border-left: 4px solid var(--green-500);
}

/* --- GUARANTEE SECTION --- */
.guarantee { background: var(--white); }
.guarantee-grid {
  max-width: 1000px;
  margin: 3rem auto 2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.guarantee-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius);
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
}
.guarantee-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.guarantee-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: .75rem;
  color: var(--gray-900);
}
.guarantee-card p {
  font-size: .88rem;
  color: var(--gray-600);
  line-height: 1.6;
}
.guarantee-cta {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  padding: 1.5rem 2rem;
  background: linear-gradient(135deg, var(--green-800), var(--green-600));
  border-radius: var(--radius);
  color: var(--green-100);
  font-size: 1.05rem;
  line-height: 1.7;
}
.guarantee-cta strong { color: var(--white); }

/* --- PROMO NOTE --- */
.promo-note {
  max-width: 700px;
  margin: 2rem auto 0;
  text-align: center;
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  border: 1px solid #f59e0b;
  border-radius: var(--radius);
  color: #92400e;
  font-size: .95rem;
}

/* --- RESPONSIVE for new sections --- */
@media (max-width: 768px) {
  .infra-compare {
    flex-direction: column;
    gap: 1rem;
  }
  .infra-divider {
    width: 100%;
    height: auto;
    padding: .5rem 0;
  }
  .infra-vs {
    width: 36px;
    height: 36px;
    font-size: .7rem;
  }
  .guarantee-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ NAV (shared across pages) ============ */
.nav { background: var(--white); border-bottom: 1px solid var(--gray-100); position: sticky; top: 0; z-index: 100; }
.nav-inner { max-width: 1100px; margin: 0 auto; padding: .75rem 1.5rem; display: flex; align-items: center; justify-content: space-between; }
.nav-brand { display: flex; align-items: center; gap: .5rem; text-decoration: none; }
.nav-logo { height: 32px; width: auto; }
.nav-name { font-weight: 700; font-size: 1.2rem; color: var(--gray-900); }
.nav-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-links a { text-decoration: none; color: var(--gray-700); font-weight: 500; font-size: .9rem; transition: color .15s; }
.nav-links a:hover { color: var(--green-700); }

/* ============ BUTTON SIZES ============ */
.btn-sm { padding: .5rem 1rem; font-size: .85rem; }

/* ============ FOOTER ============ */
.footer { background: var(--gray-900); color: var(--gray-300); padding: 3rem 1.5rem 2rem; margin-top: 3rem; }
.footer-inner { max-width: 1000px; margin: 0 auto; text-align: center; }
.footer-links { display: flex; gap: 1.5rem; justify-content: center; margin-bottom: 1.5rem; }
.footer-links a { color: var(--gray-400); text-decoration: none; font-size: .9rem; }
.footer-links a:hover { color: white; }
.footer-text p { color: var(--gray-500); font-size: .9rem; }
.footer-small { font-size: .8rem; color: var(--gray-600); }

/* ============ LANGUAGE SWITCHER ============ */
.lang-switch { position: fixed; top: .75rem; right: 1.5rem; z-index: 200; display: flex; align-items: center; gap: .35rem; background: var(--white); padding: .35rem .6rem; border-radius: 20px; border: 1px solid var(--gray-200); box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.lang-btn { background: none; border: none; font-size: .78rem; font-weight: 600; cursor: pointer; color: var(--gray-500); padding: .2rem .4rem; border-radius: 4px; }
.lang-btn.active { color: var(--green-700); background: var(--green-50); }
.lang-divider { color: var(--gray-300); font-size: .78rem; }

/* ============ DASHBOARD MOCKUP ============ */
.dash-mockup { max-width: 650px; margin: 2rem auto; background: var(--white); border-radius: 12px; border: 1px solid var(--gray-200); box-shadow: 0 4px 24px rgba(0,0,0,.06); overflow: hidden; }
.dash-topbar { background: var(--gray-900); color: white; padding: .75rem 1.25rem; font-weight: 600; font-size: .9rem; }
.dash-stats { display: flex; gap: 1.5rem; padding: 1.25rem; border-bottom: 1px solid var(--gray-100); }
.dash-stat { flex: 1; text-align: center; }
.dash-stat-num { font-size: 2rem; font-weight: 800; color: var(--green-700); }
.dash-stat-label { font-size: .8rem; color: var(--gray-500); }
.dash-subjects { padding: 1.25rem; display: flex; flex-direction: column; gap: .75rem; border-bottom: 1px solid var(--gray-100); }
.dash-subject { display: grid; grid-template-columns: 130px 1fr; align-items: center; gap: .75rem; }
.dash-subj-name { font-size: .85rem; font-weight: 500; color: var(--gray-700); }
.dash-bar { height: 24px; background: var(--gray-100); border-radius: 12px; overflow: hidden; }
.dash-bar-fill { height: 100%; background: var(--green-500); border-radius: 12px; padding: 0 .5rem; display: flex; align-items: center; font-size: .75rem; font-weight: 600; color: white; }
.dash-topics { padding: 1.25rem; border-bottom: 1px solid var(--gray-100); }
.dash-topics strong { display: block; margin-bottom: .75rem; font-size: .85rem; color: var(--gray-700); }
.dash-topic { padding: .4rem .5rem; font-size: .85rem; border-radius: 6px; margin-bottom: .3rem; }
.dash-topic.done { background: var(--green-50); color: var(--green-800); }
.dash-topic.active { background: var(--blue-50); color: var(--blue-800); }
.dash-footer { padding: 1rem 1.25rem; display: flex; align-items: center; justify-content: space-between; font-size: .85rem; color: var(--gray-700); }

/* ============ FAQ ============ */
.faq { background: var(--gray-50); padding: 4rem 1.5rem; }
.faq-grid { max-width: 750px; margin: 2rem auto 0; display: flex; flex-direction: column; gap: .25rem; }
.faq-item { background: var(--white); border: 1px solid var(--gray-200); border-radius: 8px; padding: 1rem 1.25rem; }
.faq-item summary { font-weight: 600; font-size: .95rem; cursor: pointer; color: var(--gray-800); }
.faq-item p { padding-top: .75rem; font-size: .9rem; color: var(--gray-600); line-height: 1.6; }

/* ============ HOW IT WORKS STEPS ============ */
.how { background: var(--white); padding: 4rem 1.5rem; }
.steps { max-width: 900px; margin: 2.5rem auto 0; display: flex; align-items: start; gap: 1rem; }
.step { flex: 1; text-align: center; padding: 1.5rem 1rem; }
.step-num { width: 48px; height: 48px; border-radius: 50%; background: var(--green-600); color: white; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.3rem; margin: 0 auto 1rem; }
.step h3 { font-size: 1rem; font-weight: 700; margin-bottom: .5rem; color: var(--gray-900); }
.step p { font-size: .85rem; color: var(--gray-600); line-height: 1.5; }
.step-arrow { display: flex; align-items: center; padding-top: 2rem; font-size: 1.5rem; color: var(--gray-400); flex-shrink: 0; }

/* ============ PEDAGOGY GRID ============ */
.pedagogy { background: var(--gray-50); padding: 4rem 1.5rem; }
.pedagogy-grid { max-width: 960px; margin: 2rem auto 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.ped-card { background: var(--white); padding: 1.5rem; border-radius: 10px; border: 1px solid var(--gray-100); text-align: center; }
.ped-icon { font-size: 2rem; margin-bottom: .75rem; }
.ped-card h3 { font-size: .95rem; font-weight: 700; color: var(--gray-900); margin-bottom: .5rem; }
.ped-card p { font-size: .82rem; color: var(--gray-600); line-height: 1.5; }

/* ============ WHY-GATED ============ */
.why-gated { max-width: 700px; margin: 2rem auto; padding: 1.5rem; background: var(--gray-50); border-radius: 10px; border: 1px solid var(--gray-200); }
.why-gated h4 { font-size: 1rem; font-weight: 700; color: var(--gray-900); margin-bottom: .5rem; }
.why-gated p { font-size: .9rem; color: var(--gray-600); line-height: 1.6; }

/* ============ PRICING ============ */
.pricing { background: var(--white); padding: 4rem 1.5rem; }
.pricing-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; max-width: 960px; margin: 2rem auto 0; align-items: start; }
.price-card { background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: 12px; padding: 2rem 1.5rem; text-align: center; position: relative; }
.price-card.popular { border-color: var(--green-300); box-shadow: 0 4px 24px rgba(22,101,52,.08); }
.price-badge { font-size: .8rem; font-weight: 600; color: var(--gray-600); margin-bottom: .75rem; }
.popular-badge { color: var(--green-700); }
.price-amount { font-size: 2.5rem; font-weight: 800; color: var(--gray-900); margin-bottom: .25rem; }
.price-amount span { font-size: 1rem; font-weight: 500; color: var(--gray-500); }
.price-sessions { font-size: .9rem; color: var(--gray-700); margin-bottom: .25rem; }
.price-per { font-size: .82rem; color: var(--green-700); font-weight: 600; margin-bottom: 1.25rem; }
.price-features { list-style: none; display: flex; flex-direction: column; gap: .5rem; text-align: left; margin-bottom: 1.5rem; }
.price-features li { font-size: .85rem; color: var(--gray-700); }

/* ============ SECTION SHARED ============ */
.section-sub { text-align: center; max-width: 600px; margin: 0 auto 2rem; font-size: 1rem; color: var(--gray-600); line-height: 1.6; }

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .pedagogy-grid { grid-template-columns: 1fr 1fr; }
  .pricing-cards { grid-template-columns: 1fr; max-width: 400px; }
  .steps { flex-direction: column; align-items: center; }
  .step-arrow { transform: rotate(90deg); padding-top: 0; }
  .dash-subject { grid-template-columns: 100px 1fr; }
  .infra-compare { flex-direction: column; gap: 1rem; }
  .infra-divider { width: 100%; height: auto; padding: .5rem 0; }
  .infra-vs { width: 36px; height: 36px; font-size: .7rem; }
  .guarantee-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 500px) {
  .pedagogy-grid { grid-template-columns: 1fr; }
}