:root{
  --green-dark:#1f5f3f;
  --green:#2e7d4f;
  --green-light:#e8f5ec;
  --gold:#c8a967;
  --red-flag:#c8362b;
  --text:#2c2c2c;
  --gray:#666;
  --bg:#fafaf7;
  --border:#e5e5e0;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Segoe UI',Tahoma,sans-serif;color:var(--text);line-height:1.6;background:var(--bg)}
img{max-width:100%;height:auto;display:block}
a{color:var(--green-dark);text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ============ HEADER ============ */
.topbar{background:var(--green-dark);color:#fff;font-size:13px;padding:8px 0}
.topbar .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.topbar a{color:#fff;margin-right:15px}

header.main{background:#fff;padding:18px 0;border-bottom:3px solid var(--green);position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.05)}
header.main .container{display:flex;align-items:center;gap:30px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:12px;flex:1;min-width:280px}
.logo-icon{width:60px;height:60px;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;border-radius:50%;font-size:30px;font-weight:bold;flex-shrink:0}
.logo-text h1{font-size:18px;color:var(--green-dark);line-height:1.2;margin:0}
.logo-text .slogan{font-size:12px;color:var(--gray);font-style:italic}

.search-box{flex:2;min-width:280px;display:flex;border:2px solid var(--green);border-radius:30px;overflow:hidden}
.search-box input{flex:1;border:0;padding:10px 18px;font-size:14px;outline:0}
.search-box button{background:var(--green);color:#fff;border:0;padding:0 20px;cursor:pointer;font-size:14px}

.header-actions{display:flex;align-items:center;gap:18px}
.hotline{display:flex;align-items:center;gap:8px;color:var(--red-flag);font-weight:bold}
.hotline .label{font-size:11px;color:var(--gray);font-weight:normal}
.hotline .num{font-size:20px}
.cart-icon{position:relative;font-size:24px;color:var(--green-dark);cursor:pointer}
.cart-icon .count{position:absolute;top:-8px;right:-8px;background:var(--red-flag);color:#fff;font-size:11px;padding:2px 6px;border-radius:50%}

/* ============ MAIN MENU ============ */
nav.main-menu{background:var(--green);padding:0}
nav.main-menu ul{list-style:none;display:flex;flex-wrap:wrap;max-width:1200px;margin:0 auto;padding:0 20px}
nav.main-menu li{position:relative}
nav.main-menu a{display:block;padding:14px 22px;color:#fff;font-weight:600;font-size:14px;text-transform:uppercase;letter-spacing:.5px}
nav.main-menu a:hover{background:var(--green-dark)}
nav.main-menu li.active a{background:var(--green-dark)}

/* ============ HERO BANNER ============ */
.hero{position:relative;background:linear-gradient(135deg,#1f5f3f 0%,#2e7d4f 100%);color:#fff;padding:80px 0;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.05)"/></svg>');opacity:.4}
.hero .container{position:relative;display:grid;grid-template-columns:1.2fr 1fr;gap:50px;align-items:center}
.hero-text .badge{display:inline-block;background:var(--gold);color:#fff;padding:6px 16px;border-radius:20px;font-size:12px;font-weight:bold;text-transform:uppercase;margin-bottom:20px;letter-spacing:1px}
.hero-text h2{font-size:42px;line-height:1.15;margin-bottom:20px;font-weight:800}
.hero-text h2 span{color:var(--gold)}
.hero-text p{font-size:17px;line-height:1.6;margin-bottom:30px;opacity:.95}
.hero-cta{display:flex;gap:15px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 32px;border-radius:30px;font-weight:bold;text-transform:uppercase;letter-spacing:.5px;font-size:14px;transition:all .3s;cursor:pointer;border:0}
.btn-primary{background:var(--gold);color:#fff}
.btn-primary:hover{background:#a8893f;transform:translateY(-2px)}
.btn-outline{background:transparent;color:#fff;border:2px solid #fff}
.btn-outline:hover{background:#fff;color:var(--green-dark)}
.hero-image{text-align:center}
.hero-image .visual{font-size:200px;line-height:1}
.hero-stats{display:flex;gap:30px;margin-top:30px;flex-wrap:wrap}
.hero-stats .stat{flex:1;min-width:120px}
.hero-stats .stat .num{font-size:32px;font-weight:bold;color:var(--gold)}
.hero-stats .stat .label{font-size:12px;text-transform:uppercase;opacity:.85}

/* ============ USP ============ */
.usp{background:#fff;padding:50px 0;border-bottom:1px solid var(--border)}
.usp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.usp-item{text-align:center;padding:20px}
.usp-item .icon{width:70px;height:70px;background:var(--green-light);color:var(--green-dark);display:flex;align-items:center;justify-content:center;border-radius:50%;margin:0 auto 15px;font-size:32px}
.usp-item h3{font-size:16px;color:var(--green-dark);margin-bottom:8px;font-weight:700}
.usp-item p{font-size:13px;color:var(--gray);line-height:1.5}

/* ============ SECTION TITLE ============ */
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title .pre{display:block;color:var(--gold);font-size:13px;font-weight:bold;text-transform:uppercase;letter-spacing:2px;margin-bottom:8px}
.section-title h2{font-size:32px;color:var(--green-dark);font-weight:800}
.section-title h2 span{color:var(--gold)}
.section-title .line{width:80px;height:3px;background:var(--gold);margin:15px auto}
.section-title p{font-size:15px;color:var(--gray);max-width:700px;margin:0 auto}

/* ============ PRODUCTS ============ */
.product-cats{display:flex;justify-content:center;gap:10px;margin-bottom:35px;flex-wrap:wrap}
.product-cats button{background:#fff;border:2px solid var(--green);color:var(--green-dark);padding:8px 20px;border-radius:25px;cursor:pointer;font-weight:600;font-size:13px;transition:all .3s}
.product-cats button:hover,.product-cats button.active{background:var(--green);color:#fff}

.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.product{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:all .3s}
.product:hover{transform:translateY(-5px);box-shadow:0 8px 20px rgba(0,0,0,.12)}
.product .img{height:240px;background:linear-gradient(135deg,#e8f5ec 0%,#c8e6c9 100%);display:flex;align-items:center;justify-content:center;font-size:80px;position:relative}
.product .badge-top{position:absolute;top:10px;left:10px;background:var(--red-flag);color:#fff;padding:4px 10px;border-radius:4px;font-size:11px;font-weight:bold}
.product .badge-ocop{position:absolute;top:10px;right:10px;background:var(--gold);color:#fff;padding:4px 10px;border-radius:4px;font-size:11px;font-weight:bold}
.product .info{padding:18px}
.product h3{font-size:15px;line-height:1.4;margin-bottom:8px;height:42px;overflow:hidden;color:var(--text);font-weight:600}
.product .meta{font-size:12px;color:var(--gray);margin-bottom:10px}
.product .price{display:flex;align-items:baseline;gap:8px;margin-bottom:12px}
.product .price-now{font-size:20px;font-weight:bold;color:var(--red-flag)}
.product .price-old{font-size:13px;color:#999;text-decoration:line-through}
.product .stars{color:var(--gold);font-size:13px;margin-bottom:10px}
.product .stars span{color:var(--gray);font-size:11px;margin-left:5px}
.product .add-cart{width:100%;background:var(--green);color:#fff;border:0;padding:10px;border-radius:6px;cursor:pointer;font-weight:600;font-size:13px;transition:all .3s}
.product .add-cart:hover{background:var(--green-dark)}

/* ============ ABOUT ============ */
.about{background:#fff}
.about .container{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about .image{background:linear-gradient(135deg,#e8f5ec,#c8e6c9);border-radius:12px;height:400px;display:flex;align-items:center;justify-content:center;font-size:140px;position:relative;overflow:hidden}
.about .image::after{content:"Đồi chè Tân Cương";position:absolute;bottom:20px;left:20px;right:20px;background:rgba(0,0,0,.6);color:#fff;padding:10px;border-radius:6px;font-size:14px;text-align:center}
.about h2{font-size:32px;color:var(--green-dark);margin-bottom:20px;line-height:1.2;font-weight:800}
.about p{margin-bottom:18px;font-size:15px;line-height:1.8;color:var(--text)}
.about .signature{font-style:italic;color:var(--gold);margin-top:25px;font-size:15px}

/* ============ CERTIFICATIONS ============ */
.certs{background:var(--green-light);padding:40px 0}
.certs-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:center}
.cert{text-align:center;padding:20px;background:#fff;border-radius:10px}
.cert .icon{font-size:50px;color:var(--gold);margin-bottom:10px}
.cert h4{color:var(--green-dark);font-size:14px;margin-bottom:5px}
.cert p{font-size:12px;color:var(--gray)}

/* ============ BLOG ============ */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.blog-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:all .3s}
.blog-card:hover{transform:translateY(-3px)}
.blog-card .img{height:200px;background:linear-gradient(135deg,#e8f5ec,#c8e6c9);display:flex;align-items:center;justify-content:center;font-size:70px}
.blog-card .info{padding:22px}
.blog-card .date{font-size:12px;color:var(--gold);font-weight:bold;margin-bottom:8px;text-transform:uppercase}
.blog-card h3{font-size:17px;color:var(--green-dark);margin-bottom:12px;line-height:1.4}
.blog-card p{font-size:14px;color:var(--gray);line-height:1.6;margin-bottom:15px}
.blog-card a.read-more{color:var(--green);font-weight:bold;font-size:13px;text-transform:uppercase;letter-spacing:.5px}

/* ============ TESTIMONIALS ============ */
.testimonials{background:linear-gradient(135deg,#1f5f3f 0%,#2e7d4f 100%);color:#fff}
.testimonials .section-title h2{color:#fff}
.testimonials .section-title h2 span{color:var(--gold)}
.testimonials .section-title p{color:rgba(255,255,255,.85)}
.testimonials .section-title .pre{color:var(--gold)}
.test-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.test-card{background:rgba(255,255,255,.1);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:30px;position:relative}
.test-card .quote-mark{font-size:60px;color:var(--gold);line-height:1;margin-bottom:10px;font-family:serif}
.test-card .stars{color:var(--gold);font-size:18px;margin-bottom:15px}
.test-card .quote{font-size:15px;line-height:1.7;margin-bottom:20px;font-style:italic}
.test-card .author{display:flex;align-items:center;gap:12px;border-top:1px solid rgba(255,255,255,.2);padding-top:15px}
.test-card .avatar{width:50px;height:50px;background:var(--gold);color:#fff;display:flex;align-items:center;justify-content:center;border-radius:50%;font-weight:bold;font-size:18px}
.test-card .name{font-weight:bold;font-size:15px}
.test-card .location{font-size:13px;opacity:.8}

/* ============ CTA ============ */
.cta-banner{background:var(--gold);color:#fff;padding:50px 0;text-align:center}
.cta-banner h2{font-size:32px;margin-bottom:15px;font-weight:800}
.cta-banner p{font-size:17px;margin-bottom:25px;opacity:.95}
.cta-banner .btn-primary{background:#fff;color:var(--green-dark)}

/* ============ FOOTER ============ */
footer{background:#1a1a1a;color:#bbb;padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:40px}
.footer-col h3{color:#fff;font-size:16px;margin-bottom:18px;text-transform:uppercase;letter-spacing:.5px}
.footer-col h3::after{content:"";display:block;width:40px;height:2px;background:var(--gold);margin-top:8px}
.footer-col p,.footer-col a{font-size:14px;line-height:1.9;color:#bbb}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a:hover{color:var(--gold)}
.footer-col .ico{color:var(--gold);margin-right:8px;width:18px;display:inline-block}
.footer-map iframe{width:100%;height:200px;border-radius:8px;border:0;filter:grayscale(.3)}
.social-links{display:flex;gap:10px;margin-top:15px}
.social-links a{width:38px;height:38px;background:#333;color:#fff;display:flex;align-items:center;justify-content:center;border-radius:50%;font-size:16px;transition:all .3s}
.social-links a:hover{background:var(--gold)}
.cert-logos{display:flex;gap:10px;margin-top:15px;flex-wrap:wrap}
.cert-logo{background:#fff;color:var(--green-dark);padding:6px 12px;border-radius:6px;font-size:11px;font-weight:bold}
.copyright{border-top:1px solid #333;padding:20px 0;text-align:center;font-size:13px;color:#888}

/* ============ MOBILE ============ */
@media(max-width:900px){
  .hero .container,.about .container{grid-template-columns:1fr}
  .hero-text h2{font-size:30px}
  .usp-grid,.products-grid,.blog-grid,.test-grid,.certs-grid,.footer-grid{grid-template-columns:repeat(2,1fr)}
  .section{padding:40px 0}
  .logo-text h1{font-size:15px}
  .hero{padding:50px 0}
}
@media(max-width:560px){
  .usp-grid,.products-grid,.blog-grid,.test-grid,.certs-grid,.footer-grid{grid-template-columns:1fr}
  .hero-text h2{font-size:24px}
  .section-title h2{font-size:24px}
  nav.main-menu a{padding:10px 14px;font-size:12px}
}

/* ============ IMAGE OVERRIDES (added when real photos uploaded) ============ */
.product .img{position:relative;overflow:hidden}
.product .img img{width:100%;height:100%;object-fit:cover;display:block}
.featured-post .img img,
.news-card .img img,
.blog-card .img img{width:100%;height:100%;object-fit:cover;display:block}
.about .image{overflow:hidden}
.hero-image img{max-width:100%;height:auto;display:block;margin:0 auto}