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

:root {
  --green-dark: #2d5016;
  --green-mid: #4a7c2e;
  --green-light: #7cb342;
  --green-pale: #e8f5e3;
  --brown: #6d4c41;
  --brown-light: #a1887f;
  --gold: #c8a44e;
  --cream: #faf6ee;
  --white: #ffffff;
  --text: #3e3e3e;
  --text-light: #7a7a7a;
  --shadow: 0 4px 20px rgba(0,0,0,.08);
  --radius: 12px;
  --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--cream);
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--green-dark);
}
.logo-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--green-mid), var(--green-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
}
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  font-size: .95rem;
  color: var(--text);
  font-weight: 500;
  transition: color .25s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--green-mid);
  transition: width .3s;
}
.nav-links a:hover { color: var(--green-mid); }
.nav-links a:hover::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span {
  width: 26px; height: 2.5px;
  background: var(--text);
  border-radius: 2px;
  transition: .3s;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--green-pale) 0%, #d4e8ca 50%, #c5ddb5 100%);
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -30%; right: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(203,167,78,.12) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-content h1 {
  font-size: 2.8rem;
  line-height: 1.2;
  color: var(--green-dark);
  margin-bottom: 20px;
}
.hero-content h1 span { color: var(--gold); }
.hero-content p {
  font-size: 1.08rem;
  color: var(--text-light);
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: none;
  transition: all .3s;
}
.btn-primary { background: var(--green-mid); color: #fff; }
.btn-primary:hover { background: var(--green-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(74,124,46,.35); }
.btn-outline { background: transparent; color: var(--green-mid); border: 2px solid var(--green-mid); }
.btn-outline:hover { background: var(--green-mid); color: #fff; }
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-card {
  background: rgba(255,255,255,.7);
  backdrop-filter: blur(12px);
  border-radius: 24px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,.08);
  text-align: center;
}
.hero-card h3 { font-size: 1.5rem; color: var(--green-dark); margin-bottom: 8px; }
.hero-card .year { font-size: .9rem; color: var(--text-light); margin-bottom: 24px; }
.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat-item { background: var(--white); border-radius: 12px; padding: 16px; }
.stat-item .num { font-size: 1.6rem; font-weight: 700; color: var(--green-mid); }
.stat-item .label { font-size: .8rem; color: var(--text-light); }

/* ===== Sections ===== */
.section { padding: 90px 0; }
.section-title {
  text-align: center;
  font-size: 2rem;
  color: var(--green-dark);
  margin-bottom: 14px;
}
.section-sub {
  text-align: center;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 50px;
  font-size: 1.02rem;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.about-text h3 { font-size: 1.5rem; color: var(--green-dark); margin-bottom: 16px; }
.about-text p { margin-bottom: 16px; color: var(--text-light); }
.about-info { margin-top: 24px; }
.info-row { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid rgba(0,0,0,.06); }
.info-row:last-child { border-bottom: none; }
.info-row .icon { color: var(--green-mid); font-size: 1.1rem; min-width: 28px; }
.info-row .label { font-weight: 600; min-width: 80px; color: var(--green-dark); }
.info-row .value { color: var(--text-light); }
.about-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  border-left: 5px solid var(--green-mid);
}
.about-card h4 { color: var(--green-dark); margin-bottom: 16px; font-size: 1.15rem; }
.about-card ul li {
  padding: 8px 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text-light);
}
.about-card ul li::before { content: '🌱'; font-size: .9rem; }

/* ===== Products ===== */
.products { background: var(--white); }
.product-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 30px;
}
.product-card {
  background: var(--cream);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: all .35s;
  border: 1px solid rgba(0,0,0,.04);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0,0,0,.1);
  border-color: var(--green-light);
}
.product-icon {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--green-pale), #c8e6c9);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}
.product-card h3 { font-size: 1.2rem; color: var(--green-dark); margin-bottom: 10px; }
.product-card p { font-size: .92rem; color: var(--text-light); margin-bottom: 16px; }
.product-tags { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.product-tags span {
  background: var(--green-pale);
  color: var(--green-mid);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: .8rem;
  font-weight: 500;
}

/* ===== Products Sub ===== */
.product-sub-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 20px;
  margin-top: 50px;
}
.sub-card {
  background: var(--cream);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  transition: .3s;
}
.sub-card:hover { background: var(--green-pale); }
.sub-card .emoji { font-size: 2rem; margin-bottom: 10px; }
.sub-card h4 { font-size: 1rem; color: var(--green-dark); margin-bottom: 6px; }
.sub-card p { font-size: .82rem; color: var(--text-light); }

/* ===== Advantages ===== */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 24px;
}
.adv-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: .3s;
}
.adv-card:hover { transform: translateY(-4px); }
.adv-card .num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--green-light);
  margin-bottom: 10px;
}
.adv-card h4 { color: var(--green-dark); margin-bottom: 8px; }
.adv-card p { font-size: .88rem; color: var(--text-light); }

/* ===== Contact ===== */
.contact { background: var(--green-dark); color: var(--white); }
.contact .section-title { color: var(--white); }
.contact .section-sub { color: rgba(255,255,255,.7); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.contact-info h4 { font-size: 1.2rem; margin-bottom: 20px; }
.contact-info li {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: flex-start;
  font-size: 1rem;
  line-height: 1.6;
}
.contact-info li .icon { font-size: 1.2rem; min-width: 30px; }
.contact-extras {
  background: rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 32px 28px;
  border: 1px solid rgba(255,255,255,.15);
}
.contact-extras h4 { font-size: 1.2rem; margin-bottom: 20px; }
.contact-extras li {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: flex-start;
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(255,255,255,.85);
}
.contact-extras li:last-child { margin-bottom: 0; }
.contact-extras li .icon { font-size: 1.2rem; min-width: 30px; }

/* ===== Footer ===== */
.footer {
  background: #1a2e0e;
  color: rgba(255,255,255,.6);
  padding: 30px 0;
  text-align: center;
  font-size: .88rem;
}
.footer span { color: var(--gold); }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-content p { margin: 0 auto 32px; }
  .hero-btns { justify-content: center; }
  .about-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .product-sub-grid { grid-template-columns: 1fr 1fr; }
  .adv-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: rgba(255,255,255,.98);
    flex-direction: column;
    padding: 20px 24px;
    gap: 18px;
    box-shadow: 0 8px 24px rgba(0,0,0,.08);
  }
  .nav-links.active { display: flex; }
  .nav-toggle { display: flex; }
  .hero-content h1 { font-size: 2rem; }
  .product-grid { grid-template-columns: 1fr; }
  .product-sub-grid { grid-template-columns: 1fr 1fr; }
  .adv-grid { grid-template-columns: 1fr 1fr; }
}