:root {
  --bg: #FAF6F0;
  --fg: #1A1A18;
  --fg-muted: #6B6B5F;
  --accent: #C9973E;
  --accent-dark: #A07830;
  --green: #1B4332;
  --green-light: #2D6A4F;
  --cream-dark: #EDE8DF;
  --border: rgba(26,26,24,0.1);
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-name { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; color: var(--green); }
.nav-tagline { font-size: 0.875rem; color: var(--fg-muted); letter-spacing: 0.01em; }

/* HERO */
.hero {
  padding: 80px 48px 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(201,151,62,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}
.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--green);
  margin-bottom: 24px;
}
.hero-headline em { font-style: italic; color: var(--accent); font-weight: 300; }
.hero-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 440px;
  line-height: 1.7;
}

/* HERO CARD GRID */
.hero-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 14px;
}
.hero-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.hero-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(27,67,50,0.08);
}
.hero-card:nth-child(1) { grid-column: 1; grid-row: 1; }
.hero-card:nth-child(2) { grid-column: 2; grid-row: 1; }
.hero-card:nth-child(3) { grid-column: 3; grid-row: 1; }
.hero-card:nth-child(4) { grid-column: 1; grid-row: 2; }
.hero-card:nth-child(5) { grid-column: 2; grid-row: 2; }

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}
.card-icon--aid { background: linear-gradient(135deg, #e63946 0%, #c1121f 100%); }
.card-icon--bp { background: linear-gradient(135deg, #457b9d 0%, #1d3557 100%); }
.card-icon--nebul { background: linear-gradient(135deg, #6a99c9 0%, #3d5a80 100%); }
.card-icon--therm { background: linear-gradient(135deg, #f4a261 0%, #e76f51 100%); }
.card-icon--heat { background: linear-gradient(135deg, #e9c46a 0%, #d4a843 100%); }
.card-label { font-weight: 500; font-size: 0.85rem; color: var(--fg); }
.card-price { font-size: 0.75rem; color: var(--fg-muted); }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
  padding: 10px 18px;
  background: rgba(27,67,50,0.06);
  border: 1px solid rgba(27,67,50,0.12);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--green);
  font-weight: 500;
}
.badge-dot {
  width: 8px;
  height: 8px;
  background: #2ecc71;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(46,204,113,0.25);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(46,204,113,0.25); }
  50% { box-shadow: 0 0 0 6px rgba(46,204,113,0.1); }
}

/* SHARED SECTION STYLES */
.section-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-headline {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--green);
  margin-bottom: 48px;
}

/* WHY */
.why {
  padding: 80px 48px;
  background: var(--green);
  color: white;
}
.why .section-label { color: var(--accent); }
.why .section-headline { color: white; }
.why-header { max-width: 1200px; margin: 0 auto 56px; }
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}
.why-item { }
.why-icon {
  width: 48px;
  height: 48px;
  background: rgba(201,151,62,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}
.why-item h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 12px;
}
.why-item p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
}

/* CATEGORIES */
.categories {
  padding: 80px 48px;
}
.categories-header { max-width: 1200px; margin: 0 auto 48px; }
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 280px;
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.cat-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s;
}
.cat-card:hover { transform: translateY(-3px); }
.cat-card--primary {
  background: var(--green);
  color: white;
  grid-row: span 2;
}
.cat-card--primary .cat-stat { color: var(--accent); }
.cat-card--wide { grid-column: span 2; }

.cat-illustration {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cat-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  position: absolute;
}
.cat-circle--aid { background: rgba(230,57,70,0.12); }
.cat-circle--bp { background: rgba(69,123,157,0.12); }
.cat-circle--neb { background: rgba(106,153,201,0.12); }
.cat-circle--therm { background: rgba(244,162,97,0.12); }
.cat-circle--heat { background: rgba(233,196,106,0.15); }

.cat-cross {
  position: absolute;
  width: 24px;
  height: 24px;
}
.cat-cross::before, .cat-cross::after {
  content: '';
  position: absolute;
  background: #e63946;
  border-radius: 2px;
}
.cat-cross::before { width: 4px; height: 24px; top: 0; left: 10px; }
.cat-cross::after { width: 24px; height: 4px; top: 10px; left: 0; }

.cat-wave {
  position: absolute;
  width: 40px;
  height: 20px;
  border: 2px solid #457b9d;
  border-radius: 20px 20px 0 0;
  border-bottom: none;
}
.cat-wave::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 6px;
  width: 28px;
  height: 10px;
  border: 2px solid rgba(69,123,157,0.4);
  border-radius: 10px 10px 0 0;
  border-bottom: none;
}

.cat-vapor {
  width: 30px;
  height: 30px;
  border: 2px solid rgba(106,153,201,0.6);
  border-radius: 8px;
  position: absolute;
}
.cat-vapor::before, .cat-vapor::after {
  content: '';
  position: absolute;
  width: 2px;
  background: rgba(106,153,201,0.5);
  border-radius: 2px;
  animation: steam 1.5s ease-in-out infinite;
}
.cat-vapor::before { height: 12px; top: -14px; left: 8px; }
.cat-vapor::after { height: 10px; top: -12px; left: 20px; animation-delay: 0.5s; }
@keyframes steam {
  0%, 100% { opacity: 0; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(-8px); }
}

.cat-temp {
  width: 2px;
  height: 24px;
  background: #f4a261;
  border-radius: 2px;
  position: absolute;
}
.cat-temp::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: -6px;
  width: 14px;
  height: 14px;
  background: #f4a261;
  border-radius: 50%;
}

.cat-swirl {
  width: 36px;
  height: 36px;
  border: 2px solid rgba(201,151,62,0.5);
  border-radius: 50%;
  position: absolute;
  animation: spin 8s linear infinite;
}
.cat-swirl::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 18px;
  height: 18px;
  border: 2px solid rgba(201,151,62,0.3);
  border-radius: 50%;
}
@keyframes spin { to { transform: rotate(360deg); } }

.cat-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 10px;
  color: var(--fg);
}
.cat-card--primary h3 { color: white; }
.cat-card p {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}
.cat-card--primary p { color: rgba(255,255,255,0.7); }
.cat-stat {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent-dark);
  letter-spacing: 0.05em;
}

/* HOW */
.how {
  padding: 80px 48px;
  background: var(--cream-dark);
}
.how-header { max-width: 1200px; margin: 0 auto 56px; }
.how-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  max-width: 1200px;
  margin: 0 auto;
}
.step {
  flex: 1;
  padding: 0 32px;
}
.step:first-child { padding-left: 0; }
.step-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(27,67,50,0.15);
  margin-bottom: 16px;
  line-height: 1;
}
.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--green);
  margin-bottom: 12px;
}
.step-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}
.step-connector {
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin-top: 36px;
  flex-shrink: 0;
  position: relative;
}
.step-connector::after {
  content: '';
  position: absolute;
  right: 0;
  top: -4px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--accent);
  border-top: 2px solid var(--accent);
  transform: rotate(45deg);
}

/* CLOSING */
.closing {
  padding: 100px 48px;
  background: var(--green);
  color: white;
  overflow: hidden;
}
.closing-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 80px;
}
.closing-decoration {
  position: relative;
  width: 160px;
  height: 160px;
  flex-shrink: 0;
}
.closing-ring {
  position: absolute;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(201,151,62,0.3);
  animation: spin-slow 20s linear infinite;
}
.closing-ring--outer { width: 160px; height: 160px; }
.closing-ring--inner {
  width: 110px;
  height: 110px;
  animation-direction: reverse;
  border-color: rgba(201,151,62,0.2);
}
@keyframes spin-slow { to { transform: translate(-50%, -50%) rotate(360deg); } }
.closing-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 600;
  color: white;
  line-height: 1.2;
  margin-bottom: 20px;
}
.closing-body {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  max-width: 520px;
}

/* FOOTER */
.footer {
  padding: 40px 48px;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--green);
  font-size: 1rem;
  margin-bottom: 8px;
}
.footer-note { font-size: 0.875rem; color: var(--fg-muted); margin-bottom: 4px; }
.footer-legal { font-size: 0.75rem; color: rgba(107,107,95,0.6); }

/* RESPONSIVE */
@media (max-width: 900px) {
  .nav { padding: 16px 24px; }
  .hero { padding: 60px 24px 40px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .hero-card-grid { grid-template-columns: repeat(5, 1fr); grid-template-rows: 1fr; }
  .hero-card:nth-child(4), .hero-card:nth-child(5) { display: none; }
  .why-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .cat-card--primary { grid-row: auto; }
  .cat-card--wide { grid-column: auto; }
  .how-steps { flex-direction: column; gap: 32px; }
  .step-connector { display: none; }
  .closing-inner { flex-direction: column; gap: 40px; text-align: center; }
}
@media (max-width: 600px) {
  .hero-headline { font-size: 1.8rem; }
  .section-headline { font-size: 1.6rem; }
  .categories, .why, .how, .closing { padding: 60px 24px; }
  .hero-card-grid { grid-template-columns: repeat(3, 1fr); }
}