/* =====================
   RESET & BASE
======================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; color: #333; background: #fff; line-height: 1.7; }
a { text-decoration: none; color: inherit; transition: color .3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* =====================
   LAYOUT HELPERS
======================== */
.section { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { font-size: 2rem; color: #1a1a2e; margin-bottom: 10px; }
.section-title p { color: #888; font-size: 1rem; }
.section-footer { margin-top: 40px; }
.section-label { font-size: .85rem; color: #1a7f64; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; }

/* =====================
   COLOR VARIABLES
======================== */
:root {
    --primary: #1a7f64;
    --primary-dark: #146c54;
    --primary-light: #e8f5f1;
    --accent: #e07b54;
    --dark: #1a1a2e;
    --gray: #6b7280;
    --light-gray: #f5f7fa;
    --border: #e5e7eb;
}

/* =====================
   BUTTONS
======================== */
.btn-primary {
    display: inline-block; padding: 12px 32px; background: var(--primary); color: #fff;
    border-radius: 6px; font-size: .95rem; border: none; cursor: pointer;
    transition: background .3s, transform .2s;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-outline {
    display: inline-block; padding: 11px 30px; border: 2px solid var(--primary);
    color: var(--primary); border-radius: 6px; font-size: .95rem;
    transition: all .3s;
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-light {
    display: inline-block; padding: 12px 32px; background: #fff; color: var(--primary);
    border-radius: 6px; font-size: .95rem; font-weight: 600;
    transition: all .3s;
}
.btn-light:hover { background: var(--primary-light); transform: translateY(-1px); }
.btn-outline-light {
    display: inline-block; padding: 11px 30px; border: 2px solid #fff;
    color: #fff; border-radius: 6px; font-size: .95rem;
    transition: all .3s;
}
.btn-outline-light:hover { background: #fff; color: var(--primary); }

/* =====================
   HEADER & NAV
======================== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: #fff; box-shadow: 0 2px 20px rgba(0,0,0,.06);
    height: 68px; display: flex; align-items: center;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 700; color: var(--primary); }
.logo i { font-size: 1.5rem; }
.main-nav { display: flex; gap: 36px; }
.main-nav a { font-size: .95rem; color: #555; font-weight: 500; position: relative; padding-bottom: 4px; }
.main-nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--primary); transition: width .3s; }
.main-nav a:hover, .main-nav a.active { color: var(--primary); }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
.nav-toggle { display: none; background: none; border: none; font-size: 1.3rem; cursor: pointer; color: var(--dark); padding: 6px; }

/* Mobile nav */
.mobile-nav {
    display: none; position: fixed; top: 68px; left: 0; right: 0; z-index: 999;
    background: #fff; box-shadow: 0 4px 16px rgba(0,0,0,.1);
    flex-direction: column; padding: 10px 0;
}
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 14px 24px; font-size: .95rem; color: #555; border-bottom: 1px solid var(--border); }
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a.active { color: var(--primary); background: var(--primary-light); }

/* =====================
   HERO BANNER
======================== */
.hero-banner {
    margin-top: 68px; position: relative; height: 520px; overflow: hidden;
}
.banner-slider { height: 100%; position: relative; }
.banner-slide {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    opacity: 0; transition: opacity 1s;
}
.banner-slide.active { opacity: 1; }
.banner-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,26,46,.7) 0%, rgba(26,127,100,.5) 100%); }
.banner-text {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    text-align: center; color: #fff; width: 90%; max-width: 700px;
}
.banner-text h1 { font-size: 2.6rem; font-weight: 700; margin-bottom: 16px; text-shadow: 0 2px 8px rgba(0,0,0,.3); }
.banner-text p { font-size: 1.1rem; opacity: .9; }
.banner-dots {
    position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
    display: flex; gap: 10px;
}
.dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.5); cursor: pointer; transition: all .3s; }
.dot.active { background: #fff; transform: scale(1.2); }

/* =====================
   SERVICES
======================== */
.services-section { background: var(--light-gray); }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.service-card {
    background: #fff; border-radius: 12px; padding: 36px 28px; text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,.05); transition: transform .3s, box-shadow .3s;
}
.service-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,.1); }
.service-icon {
    width: 68px; height: 68px; border-radius: 50%; background: var(--primary-light);
    display: flex; align-items: center; justify-content: center; margin: 0 auto 20px;
    font-size: 1.8rem; color: var(--primary);
}
.service-card h3 { font-size: 1.1rem; margin-bottom: 12px; color: var(--dark); }
.service-card p { font-size: .9rem; color: var(--gray); line-height: 1.8; }

/* =====================
   ABOUT PREVIEW
======================== */
.about-preview { background: #fff; }
.about-preview-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-preview-img img { border-radius: 12px; box-shadow: 0 8px 32px rgba(0,0,0,.1); width: 100%; }
.about-preview-text h2 { font-size: 1.8rem; color: var(--dark); margin: 10px 0 20px; }
.about-preview-text p { color: var(--gray); margin-bottom: 16px; font-size: .95rem; }

/* =====================
   PRODUCTS PREVIEW
======================== */
.products-preview { background: var(--light-gray); }
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.product-card { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 4px 16px rgba(0,0,0,.06); transition: transform .3s; }
.product-card:hover { transform: translateY(-4px); }
.product-card img { width: 100%; height: 200px; object-fit: cover; }
.product-info { padding: 18px 20px; }
.product-info h3 { font-size: 1rem; margin-bottom: 6px; color: var(--dark); }
.product-info p { font-size: .85rem; color: var(--gray); }

/* =====================
   CTA
======================== */
.cta-section {
    background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
    text-align: center; padding: 80px 0; color: #fff;
}
.cta-section h2 { font-size: 2rem; margin-bottom: 12px; }
.cta-section p { font-size: 1rem; opacity: .85; margin-bottom: 36px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* =====================
   FOOTER
======================== */
.site-footer { background: var(--dark); color: rgba(255,255,255,.75); padding-top: 60px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 50px; padding-bottom: 40px; }
.footer-logo { display: flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 14px; }
.footer-logo i { color: var(--primary); }
.footer-col p, .footer-col a { font-size: .88rem; line-height: 2; color: rgba(255,255,255,.6); }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px; text-align: center; font-size: .82rem; color: rgba(255,255,255,.4); }

/* =====================
   PAGE HEADER
======================== */
.page-header {
    position: relative; height: 280px; display: flex; align-items: center;
    margin-top: 68px; overflow: hidden; color: #fff;
}
.page-header-bg {
    position: absolute; inset: 0; background-size: cover; background-position: center;
}
.page-header-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(26,26,46,.8) 0%, rgba(26,127,100,.6) 100%);
}
.page-header-content { position: relative; z-index: 1; }
.page-header-content h1 { font-size: 2.4rem; font-weight: 700; margin-bottom: 8px; }
.page-header-content p { font-size: 1rem; opacity: .85; }

/* =====================
   BREADCRUMB
======================== */
.breadcrumb { background: var(--light-gray); padding: 12px 0; font-size: .85rem; color: var(--gray); }
.breadcrumb a:hover { color: var(--primary); }

/* =====================
   ABOUT PAGE
======================== */
.about-content { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.about-text p { color: var(--gray); margin-bottom: 16px; font-size: .95rem; line-height: 1.9; }
.about-image img { border-radius: 12px; box-shadow: 0 8px 32px rgba(0,0,0,.1); width: 100%; }
.values-section { background: var(--light-gray); }
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.value-card { background: #fff; border-radius: 12px; padding: 36px 28px; text-align: center; box-shadow: 0 4px 20px rgba(0,0,0,.05); }
.value-icon { width: 68px; height: 68px; border-radius: 50%; background: var(--primary-light); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.8rem; color: var(--primary); }
.value-card h3 { font-size: 1.1rem; margin-bottom: 12px; color: var(--dark); }
.value-card p { font-size: .9rem; color: var(--gray); line-height: 1.9; }
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.biz-item { text-align: center; padding: 28px 16px; border: 1px solid var(--border); border-radius: 10px; transition: all .3s; }
.biz-item:hover { border-color: var(--primary); box-shadow: 0 4px 16px rgba(0,0,0,.06); }
.biz-num { font-size: 2.2rem; font-weight: 700; color: var(--primary); opacity: .4; margin-bottom: 12px; }
.biz-item h3 { font-size: .95rem; margin-bottom: 8px; color: var(--dark); }
.biz-item p { font-size: .82rem; color: var(--gray); }
.copyright-section { background: var(--light-gray); }
.copyright-content { max-width: 900px; margin: 0 auto; }
.copyright-content p { color: var(--gray); font-size: .9rem; line-height: 1.9; margin-bottom: 16px; }

/* =====================
   PRODUCTS PAGE
======================== */
.products-full-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.product-full-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 4px 24px rgba(0,0,0,.07); display: flex; flex-direction: column; }
.product-full-img { position: relative; height: 240px; overflow: hidden; }
.product-full-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.product-full-card:hover .product-full-img img { transform: scale(1.04); }
.product-tag { position: absolute; top: 16px; left: 16px; background: var(--primary); color: #fff; font-size: .78rem; padding: 4px 12px; border-radius: 20px; }
.product-full-info { padding: 28px 30px; flex: 1; display: flex; flex-direction: column; }
.product-full-info h3 { font-size: 1.15rem; margin-bottom: 12px; color: var(--dark); }
.product-desc { color: var(--gray); font-size: .9rem; margin-bottom: 18px; flex: 1; }
.product-features { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.product-features li { font-size: .85rem; color: var(--gray); }
.product-features li i { color: var(--primary); margin-right: 6px; }

/* =====================
   JOBS PAGE
======================== */
.jobs-list { max-width: 860px; margin: 0 auto; }
.job-card { background: #fff; border-radius: 12px; box-shadow: 0 4px 24px rgba(0,0,0,.07); overflow: hidden; }
.job-header { padding: 24px 30px; background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%); color: #fff; }
.job-title-wrap { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.job-title-wrap h3 { font-size: 1.25rem; font-weight: 600; }
.job-tag { background: var(--accent); color: #fff; font-size: .75rem; padding: 3px 10px; border-radius: 20px; }
.job-meta { display: flex; gap: 24px; flex-wrap: wrap; font-size: .88rem; opacity: .9; }
.job-meta span { display: flex; align-items: center; gap: 6px; }
.job-body { padding: 28px 30px; }
.job-section { margin-bottom: 24px; }
.job-section:last-child { margin-bottom: 0; }
.job-section h4 { font-size: .95rem; color: var(--dark); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.job-section h4 i { color: var(--primary); }
.job-section ul { padding-left: 20px; }
.job-section ul li { font-size: .9rem; color: var(--gray); margin-bottom: 8px; line-height: 1.7; list-style: disc; }
.benefits-list li { list-style: none !important; padding-left: 0 !important; display: flex; align-items: center; gap: 8px; }
.benefits-list li i { color: var(--primary); }
.job-footer { padding: 20px 30px; border-top: 1px solid var(--border); background: var(--light-gray); }
.why-us-section { background: var(--light-gray); }
.why-us-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.why-us-item { background: #fff; border-radius: 10px; padding: 30px 22px; text-align: center; box-shadow: 0 4px 16px rgba(0,0,0,.05); }
.why-us-icon { width: 60px; height: 60px; border-radius: 50%; background: var(--primary-light); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 1.5rem; color: var(--primary); }
.why-us-item h3 { font-size: 1rem; margin-bottom: 8px; color: var(--dark); }
.why-us-item p { font-size: .85rem; color: var(--gray); line-height: 1.7; }

/* =====================
   CONTACT PAGE
======================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; margin-bottom: 60px; }
.contact-info-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.contact-card {
    background: #fff; border-radius: 10px; padding: 24px; display: flex; gap: 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,.06); border: 1px solid var(--border);
}
.contact-card-icon { width: 52px; height: 52px; border-radius: 50%; background: var(--primary-light); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 1.2rem; color: var(--primary); }
.contact-card-content h3 { font-size: .9rem; color: var(--dark); margin-bottom: 6px; }
.contact-card-content p { font-size: .9rem; color: var(--gray); line-height: 1.6; }
.contact-card-content span { font-size: .78rem; color: #aaa; margin-top: 4px; display: block; }
.contact-map-wrap { border-radius: 12px; overflow: hidden; box-shadow: 0 4px 24px rgba(0,0,0,.08); }
.contact-map, .map-placeholder {
    width: 100%; height: 100%; min-height: 320px;
    background: var(--light-gray); display: flex; flex-direction: column;
    align-items: center; justify-content: center; color: var(--gray); gap: 12px;
}
.map-placeholder i { font-size: 3rem; color: var(--primary); opacity: .6; }
.map-placeholder p { font-size: 1rem; font-weight: 600; color: var(--dark); }
.map-placeholder span { font-size: .85rem; text-align: center; line-height: 1.8; }
.message-section { background: var(--light-gray); }
.message-form { max-width: 720px; margin: 0 auto; background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 4px 24px rgba(0,0,0,.06); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: .88rem; color: var(--dark); margin-bottom: 8px; font-weight: 500; }
.form-group label em { color: var(--accent); font-style: normal; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 6px;
    font-size: .9rem; font-family: inherit; color: #333;
    transition: border-color .3s; outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; }
.form-footer { text-align: center; margin-top: 8px; }
.form-success {
    max-width: 480px; margin: 0 auto; text-align: center; padding: 48px;
    background: #fff; border-radius: 12px; box-shadow: 0 4px 24px rgba(0,0,0,.06);
}
.form-success i { font-size: 3.5rem; color: var(--primary); margin-bottom: 20px; }
.form-success h3 { font-size: 1.3rem; margin-bottom: 10px; color: var(--dark); }
.form-success p { color: var(--gray); font-size: .9rem; }

/* =====================
   RESPONSIVE
======================== */
@media (max-width: 1024px) {
    .about-preview-inner { grid-template-columns: 1fr; gap: 40px; }
    .biz-grid { grid-template-columns: repeat(2, 1fr); }
    .products-full-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .why-us-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .main-nav { display: none; }
    .nav-toggle { display: block; }
    .hero-banner { height: 400px; }
    .banner-text h1 { font-size: 1.8rem; }
    .services-grid { grid-template-columns: 1fr 1fr; }
    .values-grid { grid-template-columns: 1fr; }
    .biz-grid { grid-template-columns: 1fr 1fr; }
    .contact-info-cards { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .job-meta { gap: 12px; }
    .product-features { grid-template-columns: 1fr; }
    .about-content { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 30px; }
    .cta-btns { flex-direction: column; align-items: center; }
}
@media (max-width: 480px) {
    .services-grid { grid-template-columns: 1fr; }
    .why-us-grid { grid-template-columns: 1fr; }
    .biz-grid { grid-template-columns: 1fr; }
    .message-form { padding: 24px 16px; }
}