/* ===== VARIABLES ===== */
:root {
  --bg: #f8fbfc;
  --bg-section: #eef6f5;
  --accent: #3a8a7e;
  --accent-dark: #2e7d6b;
  --accent-darker: #25664f;
  --accent-light: #e6f4f2;
  --text: #1a2e2b;
  --text-muted: #5a7a77;
  --white: #ffffff;
  --border: #d8ebe9;
  --shadow: 0 4px 24px rgba(58, 138, 126, 0.10);
  --shadow-hover: 0 8px 36px rgba(58, 138, 126, 0.18);
  --radius: 14px;
  --radius-sm: 8px;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ===== CONTAINER ===== */
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== TYPOGRAPHY ===== */
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 700; line-height: 1.2; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 700; line-height: 1.3; }
h3 { font-size: 1.2rem; font-weight: 600; line-height: 1.4; }
p { font-size: 1rem; line-height: 1.75; color: var(--text-muted); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent-dark);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(46, 125, 107, 0.30);
}
.btn-primary:hover {
  background: var(--accent-darker);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(46, 125, 107, 0.40);
}
.btn-outline {
  background: transparent;
  color: var(--accent-dark);
  border: 2px solid var(--accent-dark);
}
.btn-outline:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
}
.btn-sm { padding: 10px 22px; font-size: 0.9rem; }
.btn-lg { padding: 18px 44px; font-size: 1.1rem; }

/* ===== BADGE ===== */
.badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  border-radius: 50px;
  padding: 4px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

/* ===== SECTION HEADER ===== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header .badge { margin-bottom: 14px; }
.section-header h2 { margin-bottom: 14px; color: var(--text); }
.section-header p { max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

/* ===== NAV ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 251, 252, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}
.nav-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
.nav-logo img {
  height: 44px;
  width: auto;
  display: block;
}
.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent-dark); }
.nav-cta { flex-shrink: 0; }

/* Mobile nav */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.3s;
}

/* ===== HERO ===== */
.hero {
  padding: 80px 0 72px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-content .badge { margin-bottom: 20px; }
.hero-content h1 { margin-bottom: 20px; }
.hero-content .hero-lead {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.trust-row {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
}
.trust-item svg { color: var(--accent); flex-shrink: 0; }

.hero-image-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-image-bg {
  position: absolute;
  width: 90%;
  height: 90%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-light) 0%, transparent 70%);
  z-index: 0;
}
.hero-image-wrap img {
  position: relative;
  z-index: 1;
  max-height: 560px;
  width: auto;
  margin: 0 auto;
  filter: drop-shadow(0 12px 40px rgba(58, 138, 126, 0.20));
  border-radius: var(--radius);
  object-fit: contain;
}

/* ===== STATS ===== */
.stats {
  padding: 52px 0;
  background: var(--accent-dark);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {}
.stat-value {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.75);
}

/* ===== ABOUT ===== */
.about { padding: 96px 0; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about-image img { width: 100%; height: 100%; object-fit: cover; }
.about-content .badge { margin-bottom: 16px; }
.about-content h2 { margin-bottom: 16px; }
.about-content p { margin-bottom: 18px; }

.science-box {
  background: var(--accent-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin-top: 24px;
}
.science-box strong { color: var(--accent-dark); font-size: 0.95rem; display: block; margin-bottom: 6px; }
.science-box p { margin: 0; font-size: 0.9rem; }

/* ===== BENEFITS ===== */
.benefits {
  padding: 96px 0;
  background: var(--bg-section);
}
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.benefit-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.benefit-icon {
  width: 52px;
  height: 52px;
  background: var(--accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--accent-dark);
}
.benefit-card h3 { margin-bottom: 10px; color: var(--text); }
.benefit-card p { font-size: 0.92rem; margin: 0; }

/* ===== PRODUCTS ===== */
.products { padding: 96px 0; }
.products-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.22s, box-shadow 0.22s;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.product-image-wrap {
  background: var(--accent-light);
  padding: 24px 16px 12px;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  min-height: 220px;
}
.product-image-wrap img {
  height: 190px;
  width: auto;
  object-fit: contain;
  transition: transform 0.3s;
}
.product-card:hover .product-image-wrap img { transform: scale(1.05); }
.product-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-flavor-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-light);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
}
.product-card h3 { font-size: 1.05rem; margin-bottom: 8px; color: var(--text); }
.product-card p { font-size: 0.85rem; line-height: 1.55; margin-bottom: 12px; flex: 1; }
.product-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}
.product-price span { font-size: 0.8rem; font-weight: 400; color: var(--text-muted); }
.product-card .btn { width: 100%; text-align: center; }

/* ===== HOW TO USE ===== */
.how-to { padding: 96px 0; background: var(--bg-section); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: var(--border);
  z-index: 0;
}
.step-card {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 72px;
  height: 72px;
  background: var(--white);
  border: 2px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-dark);
  margin: 0 auto 18px;
  box-shadow: var(--shadow);
}
.step-card h3 { font-size: 1rem; margin-bottom: 8px; color: var(--text); }
.step-card p { font-size: 0.88rem; margin: 0; }

.how-to-note {
  margin-top: 48px;
  background: var(--white);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}
.how-to-note p { font-size: 0.95rem; margin: 0; color: var(--text); }
.how-to-note strong { color: var(--accent-dark); }

/* ===== INGREDIENTS ===== */
.ingredients { padding: 96px 0; }
.ingredients-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.ingredients-list {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  font-size: 0.9rem;
  line-height: 2;
  color: var(--text-muted);
}
.ingredients-list .key {
  color: var(--accent-dark);
  font-weight: 600;
}
.ingredients-side .badge { margin-bottom: 14px; }
.ingredients-side h2 { margin-bottom: 16px; }
.ingredients-side p { margin-bottom: 18px; }

/* ===== WARNING ===== */
.warning {
  padding: 72px 0;
  background: #fff8f0;
  border-top: 1px solid #f5e0c5;
  border-bottom: 1px solid #f5e0c5;
}
.warning-inner {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  max-width: 860px;
  margin: 0 auto;
}
.warning-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: #fff0dd;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #c07c10;
}
.warning-content h2 { font-size: 1.4rem; margin-bottom: 10px; color: var(--text); }
.warning-content p { color: var(--text-muted); margin-bottom: 20px; }

/* ===== FAQ ===== */
.faq { padding: 96px 0; background: var(--bg-section); }
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--white);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(58,138,126,0.07);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  text-align: left;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: background 0.2s;
}
.faq-question:hover { background: var(--accent-light); }
.faq-question svg {
  flex-shrink: 0;
  transition: transform 0.3s;
  color: var(--accent);
}
.faq-item.open .faq-question svg { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}
.faq-answer p { font-size: 0.95rem; margin: 0; }

/* ===== FINAL CTA ===== */
.final-cta {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent) 100%);
  text-align: center;
}
.final-cta h2 { color: var(--white); margin-bottom: 14px; }
.final-cta .lead {
  color: rgba(255,255,255,0.82);
  font-size: 1.1rem;
  margin-bottom: 44px;
  margin-left: auto;
  margin-right: auto;
  max-width: 560px;
}
.cta-flavors {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
}
.cta-flavor-btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 50px;
  background: rgba(255,255,255,0.15);
  border: 1.5px solid rgba(255,255,255,0.5);
  color: var(--white);
  font-size: 0.92rem;
  font-weight: 600;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}
.cta-flavor-btn:hover {
  background: rgba(255,255,255,0.28);
  border-color: rgba(255,255,255,0.9);
  transform: translateY(-2px);
}
.final-cta .btn-white {
  background: var(--white);
  color: var(--accent-dark);
  font-size: 1.05rem;
  padding: 16px 48px;
  border-radius: 50px;
  font-weight: 700;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
  transition: transform 0.2s, box-shadow 0.2s;
}
.final-cta .btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.22);
}

/* ===== FOOTER ===== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-logo { font-size: 1rem; font-weight: 700; color: var(--accent-dark); }
.footer-note { font-size: 0.82rem; color: var(--text-muted); text-align: center; }
.footer-link {
  font-size: 0.88rem;
  color: var(--accent-dark);
  font-weight: 500;
  transition: opacity 0.2s;
}
.footer-link:hover { opacity: 0.75; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1080px) {
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-image-wrap { max-width: 400px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image { max-height: 360px; }
  .ingredients-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 12px;
  }
  .nav { position: relative; }
}

@media (max-width: 768px) {
  .benefits-grid { grid-template-columns: 1fr 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .warning-inner { flex-direction: column; }
  h1 { font-size: 2rem; }
}

@media (max-width: 520px) {
  .benefits-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .trust-row { gap: 16px; }
  .footer-inner { flex-direction: column; text-align: center; }
}