:root {
  --bg: #FAFAF7;
  --fg: #1a1a18;
  --green-dark: #1B4D3E;
  --green-mid: #237a5c;
  --amber: #E8A838;
  --amber-light: #FFF3DC;
  --gray-100: #F4F4F0;
  --gray-200: #E8E8E4;
  --gray-400: #A0A098;
  --gray-600: #686860;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Sora', sans-serif;
  line-height: 1.15;
}

/* NAV */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--green-dark);
}
.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  text-decoration: none;
  color: var(--gray-600);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--green-dark); }

/* HERO */
.hero {
  padding: 80px 24px 64px;
  background: var(--bg);
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--amber-light);
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
  text-transform: uppercase;
}
.hero-content h1 {
  font-size: clamp(36px, 4.5vw, 54px);
  font-weight: 800;
  color: var(--green-dark);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.hero-lede {
  font-size: 17px;
  color: var(--gray-600);
  max-width: 420px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green-dark);
  color: white;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 8px;
  font-family: 'Sora', sans-serif;
  font-weight: 600;
  font-size: 15px;
  transition: background 0.15s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover { background: var(--green-mid); }
.btn-primary.btn-large { padding: 18px 36px; font-size: 16px; }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--green-dark);
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 8px;
  font-family: 'Sora', sans-serif;
  font-weight: 600;
  font-size: 15px;
  border: 1.5px solid var(--green-dark);
  transition: background 0.15s;
  cursor: pointer;
}
.btn-ghost:hover { background: var(--green-dark); color: white; }

.hero-visual { display: flex; justify-content: center; }
.hero-product-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 24px;
  width: 300px;
  box-shadow: 0 4px 24px rgba(27, 77, 62, 0.08);
}
.product-image-placeholder { border-radius: 10px; overflow: hidden; margin-bottom: 16px; }
.product-image-placeholder svg { display: block; width: 100%; height: auto; }
.hero-stat {
  background: var(--amber-light);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.stat-number {
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 20px;
  color: var(--green-dark);
}
.stat-label {
  font-size: 12px;
  color: var(--gray-600);
}

/* REASSURANCE */
.reassurance {
  background: white;
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
  padding: 32px 24px;
}
.reassurance-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0;
  justify-content: space-between;
}
.reassurance-item {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
}
.reassurance-item svg { flex-shrink: 0; }
.reassurance-item strong { display: block; font-size: 14px; font-weight: 600; color: var(--green-dark); font-family: 'Sora', sans-serif; }
.reassurance-item span { font-size: 13px; color: var(--gray-600); }
.reassurance-divider { width: 1px; height: 48px; background: var(--gray-200); flex-shrink: 0; }

/* PRODUCTS */
.products {
  padding: 96px 24px;
  max-width: 1100px;
  margin: 0 auto;
}
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  color: var(--green-dark);
  margin-bottom: 12px;
}
.section-header p { font-size: 16px; color: var(--gray-600); }
.products-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.product-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 36px;
  transition: box-shadow 0.2s;
}
.product-card:hover {
  box-shadow: 0 8px 32px rgba(27, 77, 62, 0.1);
}
.product-card-primary {
  background: var(--green-dark);
  border-color: var(--green-dark);
}
.product-type {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 12px;
}
.product-card h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--green-dark);
  margin-bottom: 12px;
}
.product-card-primary h3 { color: white; }
.product-tagline {
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 24px;
  line-height: 1.6;
}
.product-card-primary .product-tagline { color: rgba(255,255,255,0.7); }
.product-specs { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.product-specs li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--fg);
}
.product-card-primary .product-specs li { color: rgba(255,255,255,0.9); }
.spec-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  flex-shrink: 0;
}

/* DUAL TRACK */
.dualtrack {
  background: var(--gray-100);
  padding: 96px 24px;
}
.dualtrack .section-header h2 { color: var(--green-dark); }
.track-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.track-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 40px;
}
.track-icon { margin-bottom: 20px; }
.track-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--green-dark);
  margin-bottom: 12px;
}
.track-card > p {
  font-size: 15px;
  color: var(--gray-600);
  margin-bottom: 20px;
  line-height: 1.6;
}
.track-card ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.track-card ul li {
  font-size: 14px;
  color: var(--fg);
  padding-left: 20px;
  position: relative;
}
.track-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

/* WHY HAIER */
.why-haier { padding: 96px 24px; background: var(--bg); }
.why-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.why-text h2 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  color: var(--green-dark);
  margin-bottom: 20px;
}
.why-text p {
  font-size: 16px;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 16px;
}
.why-stats { display: flex; gap: 32px; margin-top: 32px; }
.why-stat { display: flex; flex-direction: column; gap: 4px; }
.why-num {
  font-family: 'Sora', sans-serif;
  font-weight: 800;
  font-size: 28px;
  color: var(--green-dark);
}
.why-desc { font-size: 13px; color: var(--gray-600); }
.why-visual { display: flex; justify-content: center; }
.why-badge {
  width: 220px;
  height: 220px;
  background: var(--green-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.badge-inner { text-align: center; }
.badge-logo {
  font-family: 'Sora', sans-serif;
  font-weight: 800;
  font-size: 28px;
  color: white;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.badge-text {
  font-size: 14px;
  color: var(--amber);
  font-weight: 500;
  line-height: 1.4;
}
.badge-sub {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* CLOSING */
.closing { padding: 96px 24px; background: var(--green-dark); }
.closing-inner { max-width: 640px; margin: 0 auto; text-align: center; }
.closing h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
}
.closing p {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 40px;
  line-height: 1.7;
}
.closing-cta { margin-bottom: 32px; }
.closing .btn-primary {
  background: var(--amber);
  color: var(--green-dark);
}
.closing .btn-primary:hover { background: #d4962f; }
.closing-contact {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.closing-contact a { color: var(--amber); text-decoration: none; font-weight: 500; }

/* FOOTER */
footer {
  background: #0f2e23;
  color: rgba(255,255,255,0.6);
  padding: 56px 24px 24px;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  color: white;
  font-size: 16px;
  margin-bottom: 12px;
}
.footer-brand p { font-size: 13px; line-height: 1.6; max-width: 220px; }
.footer-col strong {
  font-family: 'Sora', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  display: block;
  margin-bottom: 12px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  margin-bottom: 8px;
  transition: color 0.15s;
}
.footer-col a:hover { color: white; }
.footer-bottom {
  max-width: 1100px;
  margin: 24px auto 0;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .hero-product-card { width: 100%; max-width: 320px; }
  .hero-content h1 { font-size: 36px; }
  .reassurance-inner { flex-direction: column; gap: 24px; }
  .reassurance-divider { width: 40px; height: 1px; }
  .products-grid, .track-grid, .why-inner { grid-template-columns: 1fr; }
  .why-visual { order: -1; }
  .why-badge { width: 180px; height: 180px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .nav-links { gap: 16px; }
}
@media (max-width: 480px) {
  .hero { padding: 48px 16px 40px; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
  .products, .dualtrack, .why-haier, .closing { padding: 64px 16px; }
  .products-grid { gap: 16px; }
  .product-card { padding: 24px; }
  .track-card { padding: 28px; }
  .why-stats { flex-direction: column; gap: 20px; }
  .footer-inner { grid-template-columns: 1fr; }
}