/* TopAgri Smart · 拓普智慧农业 */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;color:#2c3e33;line-height:1.75;background:#ffffff;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* ===== top bar ===== */
.top-bar{background:#0f3d1d;color:#cfe3d5;font-size:13px;padding:8px 0}
.top-bar .container{display:flex;justify-content:space-between;align-items:center}
.top-bar .contact-quick a{margin-left:18px;opacity:.85}
.top-bar .contact-quick a:hover{opacity:1;color:#bde2cd}

/* ===== header / nav ===== */
header{background:#fff;border-bottom:1px solid #eaf0e7;position:sticky;top:0;z-index:100;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{width:42px;height:42px;background:linear-gradient(135deg,#1f8a3e,#3bbb5f);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:18px;box-shadow:0 4px 10px rgba(31,138,62,.3)}
.logo-text{line-height:1.2}
.logo-text .cn{font-size:20px;font-weight:700;color:#1f3a24;letter-spacing:1px}
.logo-text .en{font-size:11px;color:#6b8a72;letter-spacing:2px;text-transform:uppercase}
.menu{display:flex;gap:34px}
.menu a{font-size:15px;font-weight:500;color:#2c3e33;padding:10px 0;position:relative;transition:.3s}
.menu a::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:#1f8a3e;transition:.3s;transform:translateX(-50%)}
.menu a:hover,.menu a.active{color:#1f8a3e}
.menu a:hover::after,.menu a.active::after{width:100%}
.nav-cta{background:#1f8a3e;color:#fff;padding:9px 22px;border-radius:22px;font-size:14px;transition:.3s}
.nav-cta:hover{background:#156a2e;box-shadow:0 4px 14px rgba(31,138,62,.35)}

/* ===== hero ===== */
.hero{position:relative;height:620px;color:#fff;display:flex;align-items:center;overflow:hidden;background:linear-gradient(rgba(15,61,29,.55),rgba(15,61,29,.35)),url('https://images.unsplash.com/photo-1625246333195-78d9c38ad449?w=1800&auto=format&fit=crop') center/cover}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(31,138,62,.35),transparent 55%)}
.hero-inner{position:relative;max-width:720px}
.hero .tag{display:inline-block;background:rgba(255,255,255,.15);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.3);padding:6px 16px;border-radius:18px;font-size:13px;letter-spacing:2px;margin-bottom:22px}
.hero h1{font-size:54px;font-weight:700;margin-bottom:20px;letter-spacing:3px;line-height:1.2;text-shadow:0 2px 18px rgba(0,0,0,.25)}
.hero h1 span{color:#8fe8a6}
.hero p{font-size:17px;max-width:600px;margin-bottom:34px;opacity:.95;line-height:1.8}
.btn{display:inline-block;padding:14px 36px;border-radius:30px;font-size:15px;font-weight:500;transition:.3s;cursor:pointer}
.btn-primary{background:#1f8a3e;color:#fff}
.btn-primary:hover{background:#156a2e;box-shadow:0 6px 20px rgba(31,138,62,.4);transform:translateY(-2px)}
.btn-outline{background:transparent;color:#fff;border:2px solid #fff;margin-left:14px}
.btn-outline:hover{background:#fff;color:#1f3a24}

/* floating hero stats */
.hero-stats{position:absolute;right:5%;bottom:60px;display:flex;gap:14px;z-index:2}
.hero-stat{background:rgba(255,255,255,.14);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.25);border-radius:14px;padding:18px 22px;min-width:140px;text-align:center}
.hero-stat .num{font-size:28px;font-weight:700;color:#8fe8a6}
.hero-stat .lbl{font-size:12px;opacity:.9;margin-top:4px}

/* ===== section base ===== */
.section{padding:90px 0}
.section.alt{background:#f4f8f2}
.section-title{text-align:center;margin-bottom:56px}
.section-title .sub{display:inline-block;color:#1f8a3e;letter-spacing:4px;font-size:13px;font-weight:600;margin-bottom:10px;text-transform:uppercase}
.section-title h2{font-size:38px;color:#1f3a24;font-weight:700;letter-spacing:2px}
.section-title .line{width:54px;height:3px;background:#1f8a3e;margin:20px auto 14px;border-radius:2px}
.section-title p{color:#6b7d70;max-width:620px;margin:0 auto;font-size:15px}

/* ===== core services ===== */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.service{background:#fff;padding:38px 30px;border-radius:12px;border:1px solid #eaf0e7;transition:.35s;position:relative;overflow:hidden}
.service::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,#1f8a3e,#5cc47a);transform:scaleX(0);transform-origin:left;transition:.4s}
.service:hover{transform:translateY(-8px);box-shadow:0 18px 44px rgba(31,138,62,.12);border-color:#c8e4cf}
.service:hover::before{transform:scaleX(1)}
.service-ico{width:60px;height:60px;border-radius:14px;background:linear-gradient(135deg,#e8f5ed,#cde9d5);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:20px;color:#1f8a3e}
.service h3{font-size:20px;color:#1f3a24;margin-bottom:12px;font-weight:600}
.service p{color:#6b7d70;font-size:14px;line-height:1.8}

/* ===== product cards ===== */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.product{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.05);transition:.35s;border:1px solid #eef2ec}
.product:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(0,0,0,.1)}
.product-img{height:220px;background-size:cover;background-position:center;position:relative}
.product-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(15,61,29,.4))}
.product-label{position:absolute;top:14px;left:14px;background:#1f8a3e;color:#fff;font-size:12px;padding:4px 12px;border-radius:14px;z-index:1;letter-spacing:1px}
.product-body{padding:24px}
.product-body h3{color:#1f3a24;font-size:18px;font-weight:600;margin-bottom:10px}
.product-body p{color:#6b7d70;font-size:13.5px;margin-bottom:14px;min-height:62px}
.product-body .more{color:#1f8a3e;font-size:13px;font-weight:500}
.product-body .more:hover{color:#156a2e}

/* ===== case studies ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case{position:relative;height:300px;border-radius:12px;overflow:hidden;background-size:cover;background-position:center;transition:.4s;cursor:pointer}
.case::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(15,61,29,.88))}
.case:hover{transform:translateY(-5px);box-shadow:0 14px 36px rgba(0,0,0,.18)}
.case-info{position:absolute;bottom:0;left:0;right:0;padding:26px;color:#fff;z-index:2}
.case-info .cat{display:inline-block;background:rgba(255,255,255,.2);backdrop-filter:blur(5px);padding:3px 12px;border-radius:12px;font-size:12px;margin-bottom:10px}
.case-info h4{font-size:19px;margin-bottom:6px;font-weight:600}
.case-info p{font-size:13px;opacity:.85}

/* ===== news ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news{background:#fff;border-radius:10px;overflow:hidden;border:1px solid #eef2ec;transition:.3s}
.news:hover{box-shadow:0 10px 28px rgba(0,0,0,.08);transform:translateY(-4px)}
.news-img{height:180px;background-size:cover;background-position:center}
.news-body{padding:22px}
.news-body .date{color:#1f8a3e;font-size:13px;margin-bottom:8px;font-weight:500}
.news-body h4{color:#1f3a24;font-size:16.5px;margin-bottom:10px;font-weight:600;line-height:1.55}
.news-body p{color:#6b7d70;font-size:13px;line-height:1.7}

/* ===== page banner ===== */
.page-banner{height:300px;color:#fff;display:flex;align-items:center;justify-content:center;text-align:center;position:relative;background-size:cover;background-position:center}
.page-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(rgba(15,61,29,.6),rgba(31,138,62,.5))}
.page-banner .inner{position:relative;z-index:2}
.page-banner h1{font-size:44px;font-weight:700;letter-spacing:4px;margin-bottom:12px;text-shadow:0 2px 12px rgba(0,0,0,.3)}
.page-banner .crumb{font-size:14px;opacity:.9;letter-spacing:2px}
.page-banner .crumb a{color:#fff;opacity:.85}
.page-banner .crumb a:hover{opacity:1}

/* ===== two col ===== */
.two-col{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center}
.two-col img{border-radius:12px;box-shadow:0 14px 36px rgba(0,0,0,.12)}
.two-col .sub{color:#1f8a3e;letter-spacing:3px;font-size:13px;font-weight:600;margin-bottom:14px;display:block}
.two-col h3{color:#1f3a24;font-size:32px;margin-bottom:22px;line-height:1.35;font-weight:700}
.two-col p{color:#4f6258;margin-bottom:14px;line-height:1.85}
.two-col ul{margin-top:18px}
.two-col ul li{padding:8px 0 8px 28px;position:relative;color:#4f6258}
.two-col ul li::before{content:"✓";position:absolute;left:0;top:8px;width:20px;height:20px;background:#1f8a3e;color:#fff;border-radius:50%;font-size:12px;display:flex;align-items:center;justify-content:center}

/* ===== values ===== */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value{text-align:center;padding:32px 20px;background:#fff;border-radius:12px;border:1px solid #eaf0e7;transition:.3s}
.value:hover{transform:translateY(-6px);border-color:#1f8a3e;box-shadow:0 12px 30px rgba(31,138,62,.1)}
.value-ico{width:70px;height:70px;margin:0 auto 16px;background:linear-gradient(135deg,#e8f5ed,#cde9d5);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;color:#1f8a3e}
.value h4{color:#1f3a24;font-size:18px;margin-bottom:10px;font-weight:600}
.value p{color:#6b7d70;font-size:13.5px}

/* ===== stats bar ===== */
.stats-bar{background:linear-gradient(135deg,#1f8a3e,#156a2e);color:#fff;padding:70px 0;position:relative;overflow:hidden}
.stats-bar::before{content:"";position:absolute;top:-60px;right:-40px;width:280px;height:280px;background:rgba(255,255,255,.06);border-radius:50%}
.stats-bar::after{content:"";position:absolute;bottom:-80px;left:-50px;width:240px;height:240px;background:rgba(255,255,255,.05);border-radius:50%}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center;position:relative;z-index:1}
.stat .num{font-size:48px;font-weight:700;margin-bottom:6px}
.stat .num span{font-size:24px;margin-left:2px}
.stat .lbl{opacity:.9;font-size:14px;letter-spacing:2px}

/* ===== team ===== */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.team-m{text-align:center;background:#fff;padding:26px 20px;border-radius:12px;border:1px solid #eef2ec;transition:.3s}
.team-m:hover{box-shadow:0 10px 28px rgba(0,0,0,.08);transform:translateY(-4px)}
.team-m .avatar{width:120px;height:120px;border-radius:50%;background-size:cover;background-position:center;margin:0 auto 18px;border:4px solid #e8f5ed}
.team-m h4{color:#1f3a24;font-size:17px;margin-bottom:4px;font-weight:600}
.team-m .title{color:#1f8a3e;font-size:13px;margin-bottom:12px;letter-spacing:1px}
.team-m p{color:#6b7d70;font-size:13px;line-height:1.7}

/* ===== timeline ===== */
.timeline{position:relative;max-width:860px;margin:0 auto;padding:20px 0}
.timeline::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;background:linear-gradient(180deg,#1f8a3e,#8fe8a6);transform:translateX(-50%)}
.tl-item{display:flex;width:100%;margin-bottom:38px;position:relative}
.tl-item:nth-child(odd){justify-content:flex-start}
.tl-item:nth-child(even){justify-content:flex-end}
.tl-content{width:44%;background:#fff;padding:22px 26px;border-radius:10px;border:1px solid #eaf0e7;box-shadow:0 4px 14px rgba(0,0,0,.04)}
.tl-content .year{color:#1f8a3e;font-size:20px;font-weight:700;margin-bottom:8px}
.tl-content p{color:#4f6258;font-size:14px;line-height:1.7}
.tl-item::after{content:"";position:absolute;left:50%;top:24px;width:16px;height:16px;background:#1f8a3e;border:3px solid #fff;border-radius:50%;transform:translateX(-50%);box-shadow:0 0 0 3px #cde9d5}

/* ===== products page ===== */
.product-feature{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;padding:56px 0;border-bottom:1px solid #eef2ec}
.product-feature:last-child{border-bottom:none}
.product-feature.reverse{direction:rtl}
.product-feature.reverse > *{direction:ltr}
.product-feature img{border-radius:12px;box-shadow:0 14px 34px rgba(0,0,0,.1);height:360px;width:100%;object-fit:cover}
.product-feature .tag{display:inline-block;background:#e8f5ed;color:#1f8a3e;padding:4px 14px;border-radius:12px;font-size:12px;letter-spacing:1px;margin-bottom:14px}
.product-feature h3{font-size:28px;color:#1f3a24;margin-bottom:16px;font-weight:700}
.product-feature p{color:#4f6258;margin-bottom:14px;line-height:1.85}
.product-feature ul li{padding:6px 0 6px 24px;position:relative;color:#4f6258;font-size:14px}
.product-feature ul li::before{content:"●";position:absolute;left:0;color:#1f8a3e;font-size:10px;top:10px}

/* ===== contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:50px}
.contact-info{background:#f4f8f2;padding:38px;border-radius:12px}
.contact-info h3{color:#1f3a24;font-size:24px;margin-bottom:22px;font-weight:700}
.contact-item{display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed #d7e2d3}
.contact-item:last-child{border-bottom:none}
.contact-item .ico{width:44px;height:44px;background:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#1f8a3e;font-size:18px;flex-shrink:0;border:1px solid #d7e2d3}
.contact-item .txt h5{color:#1f3a24;font-size:14px;margin-bottom:4px;font-weight:600}
.contact-item .txt p{color:#4f6258;font-size:14px;line-height:1.7}
.form-box{background:#fff;padding:38px;border-radius:12px;border:1px solid #eef2ec;box-shadow:0 6px 18px rgba(0,0,0,.04)}
.form-box h3{color:#1f3a24;font-size:24px;margin-bottom:22px;font-weight:700}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;color:#4f6258;margin-bottom:6px;font-weight:500}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 14px;border:1px solid #d7e2d3;border-radius:8px;font-family:inherit;font-size:14px;color:#2c3e33;background:#fafcfa;transition:.2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:#1f8a3e;background:#fff;box-shadow:0 0 0 3px rgba(31,138,62,.12)}
.form-group textarea{min-height:130px;resize:vertical}
.form-submit{width:100%;background:#1f8a3e;color:#fff;padding:14px;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:.3s;letter-spacing:2px}
.form-submit:hover{background:#156a2e;box-shadow:0 6px 18px rgba(31,138,62,.3)}

/* ===== map placeholder ===== */
.map-box{margin-top:60px;height:320px;border-radius:12px;background:linear-gradient(135deg,#e8f5ed,#cde9d5) center/cover;display:flex;align-items:center;justify-content:center;color:#1f8a3e;font-size:16px;border:1px solid #c8e4cf;background-image:url('https://images.unsplash.com/photo-1524661135-423995f22d0b?w=1600');background-size:cover;background-blend-mode:multiply;position:relative}
.map-box span{background:#fff;padding:14px 24px;border-radius:24px;font-weight:600;box-shadow:0 6px 18px rgba(0,0,0,.15);color:#1f8a3e}

/* ===== cta band ===== */
.cta-band{background:linear-gradient(135deg,#1f8a3e,#0f3d1d);padding:70px 0;color:#fff;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:url('https://images.unsplash.com/photo-1500937386664-56d1dfef3854?w=1800') center/cover;opacity:.12}
.cta-band h3{font-size:32px;margin-bottom:14px;position:relative;font-weight:700;letter-spacing:2px}
.cta-band p{max-width:600px;margin:0 auto 26px;opacity:.9;position:relative;font-size:15px}
.cta-band .btn{position:relative}
.cta-band .btn-primary{background:#fff;color:#1f8a3e}
.cta-band .btn-primary:hover{background:#f4f8f2}

/* ===== footer ===== */
footer{background:#0f3d1d;color:#b8cfc0;padding:60px 0 20px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:40px}
.foot-col h4{color:#fff;margin-bottom:18px;font-size:16px;font-weight:600;letter-spacing:1px}
.foot-col a{display:block;padding:5px 0;color:#9cb5a4;transition:.2s;font-size:13.5px}
.foot-col a:hover{color:#8fe8a6;padding-left:4px}
.foot-col p{color:#9cb5a4;font-size:13.5px;line-height:1.85;margin-bottom:8px}
.foot-col .logo{margin-bottom:16px}
.foot-col .logo-text .cn{color:#fff}
.foot-col .logo-text .en{color:#8fe8a6}
.foot-qr{width:110px;height:110px;background:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#1f8a3e;font-size:12px;text-align:center;margin-top:8px;padding:10px;line-height:1.5}
.copy{border-top:1px solid #1f5a34;padding-top:22px;text-align:center;font-size:13px;color:#7fa08a}
.copy a{color:#8fe8a6}

/* ===== responsive ===== */
@media (max-width:960px){
  .menu{display:none}
  .service-grid,.product-grid,.case-grid,.news-grid,.team-grid,.value-grid,.stats-grid,.foot-grid{grid-template-columns:repeat(2,1fr)}
  .two-col,.contact-grid,.product-feature{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:38px}
  .hero{height:540px}
  .hero-stats{display:none}
  .timeline::before{left:20px}
  .tl-item{justify-content:flex-start!important}
  .tl-content{width:calc(100% - 60px);margin-left:50px}
  .tl-item::after{left:20px}
  .page-banner h1{font-size:32px}
  .section{padding:60px 0}
  .section-title h2{font-size:28px}
}
@media (max-width:560px){
  .service-grid,.product-grid,.case-grid,.news-grid,.team-grid,.value-grid,.stats-grid,.foot-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .top-bar .contact-quick{display:none}
  .hero h1{font-size:30px;letter-spacing:1px}
  .btn-outline{margin-left:0;margin-top:10px;display:inline-block}
}