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

:root {
  --bg: #f9f6f1;
  --bg-dark: #1a1614;
  --text: #1a1614;
  --text-light: #f9f6f1;
  --text-muted: #7a6e64;
  --accent: #c4703f;
  --accent-hover: #a85a2e;
  --card-bg: #ffffff;
  --border: #e4ddd4;
  --border-light: #f0ebe4;
  --tag-bg: #ece5db;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Satoshi', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* FADE IN */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in {
  opacity: 0;
  animation: fadeUp 0.7s ease forwards;
}
.fade-in.d1 { animation-delay: 0.1s; }
.fade-in.d2 { animation-delay: 0.2s; }
.fade-in.d3 { animation-delay: 0.3s; }
.fade-in.d4 { animation-delay: 0.4s; }
.fade-in.d5 { animation-delay: 0.5s; }

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 28px;
}

/* NAV */
nav {
  padding: 24px 0;
  position: sticky;
  top: 0;
  background: rgba(249, 246, 241, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
  border-bottom: 1px solid var(--border-light);
}
nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-brand {
  font-family: 'Instrument Serif', serif;
  font-size: 1.2rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--accent); }

/* HERO */
.hero {
  padding: 72px 0 64px;
}
.hero-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
h1 {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2.4rem, 5.5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  max-width: 700px;
}
h1 em {
  font-style: italic;
  color: var(--accent);
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.8;
}

/* CTA */
.cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Satoshi', sans-serif;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: 16px 32px;
  border-radius: 8px;
  font-size: 0.92rem;
}
.btn-primary:hover {
  background: #2d2622;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 22, 20, 0.15);
}
.btn-secondary {
  color: var(--text-muted);
  font-size: 0.88rem;
  padding: 16px 8px;
  background: none;
}
.btn-secondary:hover { color: var(--accent); }
.cta-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 16px;
  letter-spacing: 0.02em;
}

/* DIVIDER */
.section-divider {
  width: 48px;
  height: 1px;
  background: var(--border);
  margin: 64px 0;
}

/* PROBLEM SECTION */
.problem-section {
  padding: 0 0 20px;
}
.problem-section h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.8rem;
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.problem-section p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.pain-items {
  list-style: none;
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.pain-items li {
  padding: 14px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
  position: relative;
  padding-left: 44px;
}
.pain-items li::before {
  content: '';
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.5;
}

/* FEATURE SECTION */
.features-section {
  padding: 0;
}
.features-section h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.8rem;
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 32px;
  letter-spacing: -0.01em;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 28px 24px;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
  border-color: var(--border);
  box-shadow: 0 4px 20px rgba(26, 22, 20, 0.05);
}
.feature-num {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  display: block;
}
.feature-card h3 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.12rem;
  font-weight: 400;
  margin-bottom: 8px;
  line-height: 1.3;
}
.feature-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* MODULES */
.modules-section h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.8rem;
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}
.module-item {
  display: flex;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border-light);
  align-items: baseline;
}
.module-item:last-child { border-bottom: none; }
.module-num {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
  min-width: 28px;
  padding-top: 2px;
}
.module-content h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.module-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* DARK CTA BAND */
.cta-band {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: 72px 0;
  margin: 64px 0 0;
  text-align: center;
}
.cta-band h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  color: var(--text-light);
}
.cta-band p {
  color: #a09890;
  margin-bottom: 32px;
  font-size: 0.95rem;
}
.cta-band .btn-primary {
  background: var(--accent);
  color: #fff;
}
.cta-band .btn-primary:hover {
  background: var(--accent-hover);
}
.cta-band .cta-meta {
  color: #706860;
}

/* FAQ */
.faq-section h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.8rem;
  font-weight: 400;
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}
.faq-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
}
.faq-item:last-child { border-bottom: none; }
.faq-item h3 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.faq-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* PROOF */
.proof-section {
  text-align: center;
  padding: 0;
}
.proof-section .proof-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.proof-stat {
  font-family: 'Instrument Serif', serif;
  font-size: 2.8rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 4px;
}
.proof-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* RELATED */
.related-section {
  padding: 48px 0;
}
.related-section h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: 16px;
  color: var(--text-muted);
}
.related-links {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.related-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light);
  transition: color 0.3s, padding-left 0.3s;
  display: block;
}
.related-links a:hover {
  color: var(--accent);
  padding-left: 8px;
}

/* FOOTER */
footer {
  padding: 32px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}
footer a {
  color: var(--accent);
  text-decoration: none;
}

/* SCREENSHOT */
.screenshot-section {
  padding: 0;
}
.screenshot-frame {
  background: var(--bg-dark);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
}
.screenshot-frame img {
  max-width: 100%;
  border-radius: 6px;
}
.screenshot-placeholder-text {
  color: #706860;
  font-size: 0.82rem;
  padding: 60px 20px;
}

/* VS SECTION */
.vs-section h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.8rem;
  font-weight: 400;
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}
.vs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.vs-card {
  padding: 28px 24px;
  border-radius: 12px;
  border: 1px solid var(--border-light);
}
.vs-card.old {
  background: #faf5f0;
}
.vs-card.new {
  background: var(--bg-dark);
  color: var(--text-light);
  border-color: transparent;
}
.vs-card h3 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.vs-card.old h3 { color: var(--text-muted); }
.vs-card.new h3 { color: var(--accent); }
.vs-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.vs-card ul li {
  font-size: 0.88rem;
  line-height: 1.5;
}
.vs-card.old ul li { color: var(--text-muted); }
.vs-card.new ul li { color: #c8beb4; }

/* HUB PAGE */
.hub-hero {
  padding: 80px 0 48px;
  text-align: center;
}
.hub-hero h1 {
  max-width: 100%;
}
.hub-hero .hero-sub {
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.hub-grid-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
.hub-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 64px;
}
.hub-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 28px 24px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.hub-card:hover {
  border-color: var(--border);
  box-shadow: 0 6px 24px rgba(26, 22, 20, 0.07);
  transform: translateY(-2px);
}
.hub-card-category {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.hub-card h3 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.2rem;
  font-weight: 400;
  line-height: 1.3;
}
.hub-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.55;
}
.hub-card-price {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  margin-top: auto;
  padding-top: 8px;
}
.hub-section-break {
  text-align: center;
  padding: 48px 0;
}
.hub-section-break h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 8px;
}
.hub-section-break p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* RESPONSIVE */
@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .hero { padding: 48px 0 40px; }
  .features-grid { grid-template-columns: 1fr; }
  .vs-grid { grid-template-columns: 1fr; }
  .cta-group { flex-direction: column; }
  .btn-primary { width: 100%; justify-content: center; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 0.72rem; }
  h1 { font-size: 2rem; }
  .module-item { flex-direction: column; gap: 4px; }
  .hub-grid { grid-template-columns: 1fr; }
}