/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300;1,9..40,400&display=swap');

/* Tokens */
:root {
  --green-deep: #16302B;
  --green-mid: #1E3D35;
  --green-sage: #7A9E8E;
  --green-light: #A8C0B4;
  --parchment: #F5F1EA;
  --parchment-dark: #EAE4D8;
  --amber: #D4933A;
  --amber-light: #F0B55A;
  --text-dark: #16302B;
  --text-mid: #3D5C50;
  --text-light: #6B8478;
  --white: #FFFFFF;
  --agree: #2D7A4F;
  --disagree: #9B3A2A;
  --neutral: #7A6A4A;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--parchment);
  color: var(--text-dark);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'DM Serif Display', serif;
  font-weight: 400;
  line-height: 1.15;
}

/* Nav */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(245, 241, 234, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--parchment-dark);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 20px;
  color: var(--green-deep);
}
.nav-tagline {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 400;
}
.nav-cta {
  font-size: 13px;
  font-weight: 600;
  color: var(--green-deep);
  text-decoration: none;
  border: 1.5px solid var(--green-deep);
  padding: 7px 16px;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
}
.nav-cta:hover {
  background: var(--green-deep);
  color: var(--white);
}

/* Hero */
.hero {
  padding: 120px 32px 80px;
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.hero-headline {
  font-size: clamp(42px, 5.5vw, 68px);
  color: var(--green-deep);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-mid);
  line-height: 1.65;
  margin-bottom: 28px;
  max-width: 480px;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-light);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--green-sage);
  flex-shrink: 0;
}

/* Report Card */
.hero-report { position: relative; }
.report-card {
  background: var(--white);
  border-radius: 16px;
  border: 1px solid var(--parchment-dark);
  box-shadow: 0 8px 40px rgba(22, 48, 43, 0.10);
  overflow: hidden;
}
.report-label {
  background: var(--green-deep);
  color: var(--white);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 12px 20px;
}
.report-models { padding: 16px 20px; }
.model-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}
.model-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 4px;
  flex-shrink: 0;
  min-width: 52px;
  text-align: center;
}
.claude { background: #E8D5C4; color: #5C3D1E; }
.gpt { background: #D5E8D5; color: #1E4A1E; }
.gemini { background: #D5D5E8; color: #1E1E5C; }
.model-verdict {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-mid);
  padding-top: 3px;
}
.agree { color: var(--agree); }
.disagree { color: var(--disagree); }
.neutral { color: var(--neutral); }
.report-divider {
  height: 1px;
  background: var(--parchment-dark);
  margin: 10px 0;
}
.diverge { margin-top: 6px; }
.report-ask {
  background: var(--parchment);
  border-top: 1px solid var(--parchment-dark);
  padding: 14px 20px;
}
.ask-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 6px;
}
.report-ask p {
  font-size: 13px;
  font-style: italic;
  color: var(--text-mid);
  line-height: 1.5;
}

/* How It Works */
.hiw {
  background: var(--green-deep);
  color: var(--white);
  padding: 80px 32px;
}
.hiw-inner { max-width: 1200px; margin: 0 auto; }
.hiw-header {
  text-align: center;
  margin-bottom: 56px;
}
.hiw-header h2 {
  font-size: clamp(32px, 4vw, 48px);
  color: var(--white);
  margin-bottom: 12px;
}
.hiw-header p {
  font-size: 17px;
  color: var(--green-light);
}
.hiw-steps {
  display: flex;
  align-items: stretch;
  gap: 0;
}
.step {
  flex: 1;
  padding: 32px 28px;
  background: rgba(255,255,255,0.06);
  border-radius: 12px;
}
.step-connector {
  width: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-connector::after {
  content: '';
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, var(--green-sage), var(--green-light));
}
.step-num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--amber);
  margin-bottom: 16px;
  text-transform: uppercase;
}
.step h3 {
  font-size: 22px;
  color: var(--white);
  margin-bottom: 10px;
}
.step p { font-size: 14px; color: var(--green-light); line-height: 1.6; }

/* Models */
.models-section { padding: 80px 32px; }
.models-inner { max-width: 1200px; margin: 0 auto; }
.models-header {
  text-align: center;
  margin-bottom: 48px;
}
.models-header h2 {
  font-size: clamp(28px, 3.5vw, 44px);
  color: var(--green-deep);
  margin-bottom: 12px;
}
.models-header p {
  font-size: 16px;
  color: var(--text-mid);
}
.models-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.model-card {
  background: var(--white);
  border: 1px solid var(--parchment-dark);
  border-radius: 12px;
  padding: 28px 24px;
}
.model-icon-claude, .model-icon-gpt, .model-icon-gemini {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  margin-bottom: 16px;
}
.model-icon-claude { background: #E8D5C4; }
.model-icon-gpt { background: #D5E8D5; }
.model-icon-gemini { background: #D5D5E8; }
.model-card h3 {
  font-size: 22px;
  color: var(--green-deep);
  margin-bottom: 4px;
}
.model-vendor {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 12px;
  font-weight: 500;
}
.model-card p { font-size: 14px; color: var(--text-mid); line-height: 1.55; }

/* Philosophy */
.philosophy {
  background: var(--parchment-dark);
  padding: 80px 32px;
}
.philosophy-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 64px;
  align-items: center;
}
.philosophy-content h2 {
  font-size: clamp(28px, 3.5vw, 42px);
  color: var(--green-deep);
  margin-bottom: 20px;
}
.philosophy-content p {
  font-size: 16px;
  color: var(--text-mid);
  line-height: 1.7;
  max-width: 560px;
}
.philosophy-content p + p { margin-top: 14px; }
.philosophy-stat {
  text-align: center;
  padding: 32px 40px;
  background: var(--green-deep);
  border-radius: 16px;
  flex-shrink: 0;
}
.stat-number {
  font-family: 'DM Serif Display', serif;
  font-size: 72px;
  color: var(--amber);
  line-height: 1;
  margin-bottom: 12px;
}
.stat-desc {
  font-size: 14px;
  color: var(--green-light);
  max-width: 180px;
  line-height: 1.5;
}

/* Closing */
.closing-section {
  background: var(--green-deep);
  color: var(--white);
  padding: 100px 32px;
  text-align: center;
}
.closing-inner { max-width: 720px; margin: 0 auto; }
.closing-section h2 {
  font-size: clamp(36px, 5vw, 60px);
  color: var(--white);
  margin-bottom: 20px;
  line-height: 1.1;
}
.closing-section p {
  font-size: 18px;
  color: var(--green-light);
}

/* Footer */
footer {
  background: var(--parchment);
  border-top: 1px solid var(--parchment-dark);
  padding: 40px 32px;
}
.footer-inner { max-width: 1200px; margin: 0 auto; text-align: center; }
.footer-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 18px;
  color: var(--green-deep);
  margin-bottom: 8px;
}
.footer-note {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 6px;
}
.footer-copy {
  font-size: 11px;
  color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 100px 20px 60px; }
  .hero-text { order: 1; }
  .hero-report { order: 2; }
  .hiw-steps { flex-direction: column; gap: 16px; }
  .step-connector { display: none; }
  .models-grid { grid-template-columns: 1fr; }
  .philosophy-inner { grid-template-columns: 1fr; }
  .philosophy-stat { display: none; }
  .hiw { padding: 60px 20px; }
  .models-section { padding: 60px 20px; }
  .philosophy { padding: 60px 20px; }
  .closing-section { padding: 80px 20px; }
}