/* ===== 全局重置与变量 ===== */
:root{
  --primary:#1b5e20;
  --primary-dark:#0d3d11;
  --primary-light:#2e7d32;
  --accent:#43a047;
  --accent-light:#66bb6a;
  --gold:#c8a951;
  --text:#1a1a1a;
  --text-light:#555;
  --text-muted:#888;
  --bg:#fff;
  --bg-gray:#f5f7f5;
  --bg-dark:#0d2818;
  --border:#e0e5e0;
  --shadow-sm:0 2px 8px rgba(27,94,32,.08);
  --shadow-md:0 4px 20px rgba(27,94,32,.12);
  --shadow-lg:0 8px 40px rgba(27,94,32,.18);
  --radius:8px;
  --radius-lg:16px;
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section-title{text-align:center;margin-bottom:60px}
.section-title h2{
  font-size:38px;font-weight:900;color:var(--primary-dark);
  margin-bottom:16px;letter-spacing:1px;
}
.section-title h2 span{color:var(--accent)}
.section-title p{font-size:16px;color:var(--text-light);max-width:600px;margin:0 auto}
.title-line{
  width:60px;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));
  margin:20px auto 0;border-radius:2px;
}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 36px;border-radius:50px;font-size:15px;font-weight:500;
  cursor:pointer;border:none;transition:var(--transition);letter-spacing:1px;
}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 4px 15px rgba(27,94,32,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(27,94,32,.4)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-white{background:#fff;color:var(--primary);box-shadow:var(--shadow-md)}
.btn-white:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}

/* ===== 顶部导航 ===== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.95);backdrop-filter:blur(10px);
  box-shadow:var(--shadow-sm);transition:var(--transition);
}
.header.scrolled{box-shadow:var(--shadow-md)}
.nav{display:flex;align-items:center;justify-content:space-between;height:80px}
.logo{display:flex;align-items:center;gap:12px}
.logo img{height:52px;width:auto}
.logo-text h1{font-size:20px;font-weight:900;color:var(--primary-dark);letter-spacing:2px}
.logo-text p{font-size:11px;color:var(--text-muted);letter-spacing:3px;text-transform:uppercase}
.nav-menu{display:flex;align-items:center;gap:8px}
.nav-menu a{
  padding:10px 18px;font-size:15px;font-weight:500;color:var(--text);
  border-radius:6px;transition:var(--transition);position:relative;
}
.nav-menu a:hover{color:var(--primary);background:rgba(27,94,32,.06)}
.nav-menu a.active{color:var(--primary);font-weight:700}
.nav-cta{margin-left:16px}
/* 导航下拉菜单 */
.nav-dropdown{position:relative}
.nav-dropdown > a{display:flex;align-items:center;gap:4px}
.nav-dropdown > a::after{content:'\203A';font-size:12px;transform:rotate(90deg);transition:var(--transition);display:inline-block}
.nav-dropdown:hover > a::after{transform:rotate(180deg)}
.dropdown-menu{
  position:absolute;top:100%;left:0;min-width:180px;background:#fff;
  border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:8px 0;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:var(--transition);
  z-index:1001;border:1px solid var(--border);
}
.nav-dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown-menu a{
  display:block;padding:10px 20px;font-size:14px;color:var(--text);
  border-radius:0;white-space:nowrap;
}
.dropdown-menu a:hover{background:rgba(27,94,32,.06);color:var(--primary);padding-left:26px}
.menu-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.menu-toggle span{width:24px;height:2px;background:var(--primary-dark);transition:var(--transition);border-radius:2px}

/* ===== Hero区 ===== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background:linear-gradient(135deg,#0d2818 0%,#1b5e20 50%,#2e7d32 100%);
  overflow:hidden;padding-top:80px;
}
.hero::before{
  content:'';position:absolute;top:-50%;right:-20%;width:800px;height:800px;
  background:radial-gradient(circle,rgba(67,160,71,.3) 0%,transparent 70%);
  border-radius:50%;animation:float 8s ease-in-out infinite;
}
.hero::after{
  content:'';position:absolute;bottom:-30%;left:-10%;width:600px;height:600px;
  background:radial-gradient(circle,rgba(200,169,81,.15) 0%,transparent 70%);
  border-radius:50%;animation:float 10s ease-in-out infinite reverse;
}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(30px,-30px)}}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-content{color:#fff}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 20px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  border-radius:50px;font-size:13px;letter-spacing:2px;margin-bottom:28px;
}
.hero-badge .dot{width:8px;height:8px;background:var(--accent-light);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{
  font-size:52px;font-weight:900;line-height:1.25;margin-bottom:24px;
  letter-spacing:1px;
}
.hero h1 .highlight{
  background:linear-gradient(90deg,#a5d6a7,#fff);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero h1 .gold{color:var(--gold)}
.hero p{font-size:17px;color:rgba(255,255,255,.8);margin-bottom:40px;max-width:520px;line-height:1.9}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:56px;padding-top:36px;border-top:1px solid rgba(255,255,255,.15)}
.hero-stat h3{font-size:36px;font-weight:900;color:var(--accent-light)}
.hero-stat h3 span{font-size:18px}
.hero-stat p{font-size:13px;color:rgba(255,255,255,.6);margin:0}
.hero-image{position:relative}
.hero-image img{
  width:100%;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
  border:4px solid rgba(255,255,255,.1);
}
.hero-image .floating-card{
  position:absolute;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);
  padding:16px 24px;border-radius:var(--radius);box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:12px;
}
.hero-image .card-1{top:-20px;right:-20px;animation:floatCard 4s ease-in-out infinite}
.hero-image .card-2{bottom:30px;left:-30px;animation:floatCard 5s ease-in-out infinite 1s}
@keyframes floatCard{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.floating-card .icon{
  width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;
}
.floating-card .text h4{font-size:14px;font-weight:700;color:var(--primary-dark)}
.floating-card .text p{font-size:12px;color:var(--text-muted);margin:0}

/* ===== Hero区产品轮播 ===== */
.hero-carousel{
  position:relative;width:100%;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lg);border:4px solid rgba(255,255,255,.1);
}
.hero-carousel-track{display:flex;transition:transform .7s cubic-bezier(.4,0,.2,1)}
.hero-carousel-slide{min-width:100%;position:relative}
.hero-carousel-slide img{width:100%;height:420px;object-fit:cover;display:block}
.hero-carousel-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:42px;height:42px;border-radius:50%;background:rgba(13,40,24,.6);
  backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.2);color:#fff;
  font-size:22px;cursor:pointer;transition:var(--transition);display:flex;align-items:center;justify-content:center;
  opacity:0;
}
.hero-carousel:hover .hero-carousel-arrow{opacity:1}
.hero-carousel-arrow:hover{background:var(--accent);border-color:transparent}
.hero-carousel-arrow.prev{left:14px}
.hero-carousel-arrow.next{right:14px}
.hero-carousel-dots{
  position:absolute;bottom:16px;left:50%;transform:translateX(-50%);z-index:5;
  display:flex;gap:8px;
}
.hero-carousel-dot{
  width:28px;height:4px;border-radius:2px;background:rgba(255,255,255,.4);
  cursor:pointer;transition:var(--transition);border:none;padding:0;
}
.hero-carousel-dot.active{background:#fff;width:36px}
@media(max-width:992px){
  .hero-carousel-slide img{height:360px}
  .hero-carousel-arrow{opacity:1}
}
@media(max-width:768px){
  .hero-carousel-slide img{height:280px}
  .hero-carousel-arrow{width:36px;height:36px;font-size:18px}
}

/* ===== 公司简介 ===== */
.about{background:var(--bg-gray)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.about-image{position:relative}
.about-image img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
.about-image .experience-badge{
  position:absolute;bottom:-24px;right:-24px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;padding:28px 36px;border-radius:var(--radius-lg);text-align:center;
  box-shadow:var(--shadow-lg);
}
.about-image .experience-badge h3{font-size:42px;font-weight:900;line-height:1}
.about-image .experience-badge p{font-size:13px;letter-spacing:2px;margin-top:6px}
.about-content h2{font-size:36px;font-weight:900;color:var(--primary-dark);margin-bottom:20px;line-height:1.3}
.about-content h2 span{color:var(--accent)}
.about-content .lead{font-size:16px;color:var(--text-light);margin-bottom:30px;line-height:1.9}
.about-features{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:36px}
.about-feature{display:flex;gap:14px;align-items:flex-start}
.about-feature .icon{
  flex-shrink:0;width:44px;height:44px;border-radius:12px;
  background:rgba(27,94,32,.1);display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:20px;
}
.about-feature h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:4px}
.about-feature p{font-size:13px;color:var(--text-muted);line-height:1.6}

/* ===== 核心优势 ===== */
.advantages{background:var(--bg)}
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv-card{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px 28px;transition:var(--transition);position:relative;overflow:hidden;
}
.adv-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transition:var(--transition);transform-origin:left;
}
.adv-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.adv-card:hover::before{transform:scaleX(1)}
.adv-card .icon{
  width:64px;height:64px;border-radius:16px;
  background:linear-gradient(135deg,rgba(27,94,32,.1),rgba(67,160,71,.1));
  display:flex;align-items:center;justify-content:center;margin-bottom:24px;
  color:var(--primary);font-size:28px;transition:var(--transition);
}
.adv-card:hover .icon{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;transform:scale(1.1)}
.adv-card h3{font-size:19px;font-weight:700;color:var(--text);margin-bottom:12px}
.adv-card p{font-size:14px;color:var(--text-light);line-height:1.8}

/* ===== 产品中心 ===== */
.products{background:var(--bg-gray)}
.product-filter{display:flex;justify-content:center;gap:12px;margin-bottom:48px;flex-wrap:wrap}
.filter-btn{
  padding:10px 28px;border-radius:50px;border:1px solid var(--border);
  background:#fff;font-size:14px;font-weight:500;color:var(--text-light);
  cursor:pointer;transition:var(--transition);
}
.filter-btn:hover,.filter-btn.active{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;border-color:transparent;box-shadow:0 4px 12px rgba(27,94,32,.25);
}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.product-card{
  background:#fff;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:var(--transition);cursor:pointer;
}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.product-img{position:relative;height:220px;overflow:hidden;background:var(--bg-gray)}
.product-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.product-card:hover .product-img img{transform:scale(1.08)}
.product-tag{
  position:absolute;top:16px;left:16px;padding:5px 14px;
  background:rgba(27,94,32,.9);color:#fff;font-size:12px;border-radius:50px;
  backdrop-filter:blur(4px);
}
.product-info{padding:24px}
.product-info h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:8px}
.product-info p{font-size:13px;color:var(--text-muted);line-height:1.7;margin-bottom:16px;min-height:44px}
.product-link{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;
  font-weight:600;color:var(--primary);transition:var(--transition);
}
.product-link:hover{gap:10px;color:var(--accent)}

/* ===== 服务领域 ===== */
.services{background:var(--bg)}
.service-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.service-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  height:320px;cursor:pointer;
}
.service-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.service-card:hover img{transform:scale(1.1)}
.service-overlay{
  position:absolute;inset:0;background:linear-gradient(to top,rgba(13,45,24,.95) 0%,rgba(13,45,24,.4) 50%,transparent 100%);
  display:flex;flex-direction:column;justify-content:flex-end;padding:24px;transition:var(--transition);
}
.service-card:hover .service-overlay{background:linear-gradient(to top,rgba(27,94,32,.98) 0%,rgba(27,94,32,.7) 60%,rgba(27,94,32,.3) 100%)}
.service-overlay h3{color:#fff;font-size:18px;font-weight:700;margin-bottom:8px}
.service-overlay p{color:rgba(255,255,255,.8);font-size:13px;line-height:1.6;max-height:0;overflow:hidden;transition:max-height .4s ease}
.service-card:hover .service-overlay p{max-height:100px}

/* ===== 服务领域轮播图 ===== */
.service-carousel{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.carousel-track{display:flex;transition:transform .6s cubic-bezier(.4,0,.2,1)}
.carousel-slide{
  min-width:100%;position:relative;height:480px;
  display:flex;align-items:center;overflow:hidden;
}
.carousel-slide .slide-bg{
  position:absolute;inset:0;z-index:0;
}
.carousel-slide .slide-bg img{width:100%;height:100%;object-fit:cover}
.carousel-slide .slide-bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(13,40,24,.92) 0%,rgba(13,40,24,.7) 50%,rgba(13,40,24,.3) 100%);
}
.carousel-slide .slide-content{
  position:relative;z-index:2;padding:0 60px;max-width:640px;color:#fff;
}
.carousel-slide .slide-badge{
  display:inline-block;padding:6px 18px;background:rgba(67,160,71,.9);
  border-radius:50px;font-size:13px;letter-spacing:2px;margin-bottom:20px;
}
.carousel-slide h3{font-size:36px;font-weight:900;margin-bottom:16px;line-height:1.3}
.carousel-slide h3 span{color:var(--accent-light)}
.carousel-slide .slide-desc{font-size:16px;color:rgba(255,255,255,.85);line-height:1.9;margin-bottom:28px}
.carousel-slide .slide-highlights{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.carousel-slide .highlight-tag{
  padding:8px 20px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  border-radius:50px;font-size:14px;backdrop-filter:blur(4px);
}
.carousel-slide .slide-cta{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;background:linear-gradient(135deg,var(--accent),var(--accent-light));color:#fff;border-radius:50px;font-size:15px;font-weight:600;transition:var(--transition);box-shadow:0 4px 15px rgba(67,160,71,.4)}
.carousel-slide .slide-cta:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(67,160,71,.5)}
.carousel-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:10;
  width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.15);
  backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.2);color:#fff;
  font-size:20px;cursor:pointer;transition:var(--transition);display:flex;align-items:center;justify-content:center;
}
.carousel-arrow:hover{background:rgba(67,160,71,.8);border-color:transparent}
.carousel-arrow.prev{left:20px}
.carousel-arrow.next{right:20px}
.carousel-dots{
  position:absolute;bottom:24px;left:50%;transform:translateX(-50%);z-index:10;
  display:flex;gap:10px;
}
.carousel-dot{
  width:36px;height:4px;border-radius:2px;background:rgba(255,255,255,.3);
  cursor:pointer;transition:var(--transition);border:none;padding:0;
}
.carousel-dot.active{background:var(--accent-light);width:48px}
@media(max-width:768px){
  .carousel-slide{height:520px}
  .carousel-slide .slide-content{padding:0 28px}
  .carousel-slide h3{font-size:26px}
  .carousel-slide .slide-desc{font-size:14px}
  .carousel-slide .highlight-tag{font-size:12px;padding:6px 14px}
  .carousel-arrow{width:40px;height:40px;font-size:16px}
  .carousel-arrow.prev{left:10px}
  .carousel-arrow.next{right:10px}
}

/* ===== 行业案例 ===== */
.cases{background:var(--bg-gray)}
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  height:280px;cursor:pointer;box-shadow:var(--shadow-sm);
}
.case-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.case-card:hover img{transform:scale(1.08)}
.case-overlay{
  position:absolute;inset:0;background:linear-gradient(to top,rgba(13,40,24,.9) 0%,transparent 60%);
  display:flex;flex-direction:column;justify-content:flex-end;padding:28px;
}
.case-overlay .industry{
  display:inline-block;padding:4px 12px;background:var(--accent);color:#fff;
  font-size:12px;border-radius:4px;margin-bottom:10px;width:fit-content;
}
.case-overlay h3{color:#fff;font-size:20px;font-weight:700;margin-bottom:6px}
.case-overlay p{color:rgba(255,255,255,.75);font-size:13px}

/* ===== 新闻资讯 ===== */
.news{background:var(--bg)}
.news-tabs{display:flex;justify-content:center;gap:12px;margin-bottom:48px;flex-wrap:wrap}
.news-tab-btn{
  padding:12px 32px;border-radius:50px;border:1px solid var(--border);
  background:#fff;font-size:15px;font-weight:500;color:var(--text-light);
  cursor:pointer;transition:var(--transition);
}
.news-tab-btn:hover,.news-tab-btn.active{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;border-color:transparent;box-shadow:0 4px 12px rgba(27,94,32,.25);
}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{
  background:#fff;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:var(--transition);cursor:pointer;border:1px solid var(--border);
}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.news-img{position:relative;height:200px;overflow:hidden;background:var(--bg-gray)}
.news-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-img img{transform:scale(1.08)}
.news-date{
  position:absolute;top:16px;left:16px;padding:6px 14px;
  background:rgba(13,40,24,.85);color:#fff;font-size:12px;border-radius:4px;
  backdrop-filter:blur(4px);
}
.news-info{padding:24px}
.news-info h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:10px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-info p{font-size:13px;color:var(--text-muted);line-height:1.8;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-link{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--primary);transition:var(--transition)}
.news-link:hover{gap:10px;color:var(--accent)}
.news-tab-panel{display:none;animation:fadeIn .4s ease}
.news-tab-panel.active{display:grid}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:992px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.news-grid{grid-template-columns:1fr}.news-tab-btn{padding:10px 22px;font-size:14px}}

/* ===== 资质荣誉 ===== */
.credentials{
  background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%);
  color:#fff;position:relative;overflow:hidden;
}
.credentials::before{
  content:'';position:absolute;top:0;right:0;width:500px;height:500px;
  background:radial-gradient(circle,rgba(67,160,71,.2) 0%,transparent 70%);border-radius:50%;
}
.credentials .section-title h2{color:#fff}
.credentials .section-title p{color:rgba(255,255,255,.7)}
.cred-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;position:relative;z-index:2}
.cred-card{
  text-align:center;padding:40px 24px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-lg);backdrop-filter:blur(10px);transition:var(--transition);
}
.cred-card:hover{background:rgba(255,255,255,.1);transform:translateY(-6px);border-color:rgba(102,187,106,.4)}
.cred-card .number{font-size:48px;font-weight:900;color:var(--accent-light);line-height:1;margin-bottom:8px}
.cred-card .number span{font-size:20px}
.cred-card h4{font-size:16px;font-weight:700;margin-bottom:8px;color:#fff}
.cred-card p{font-size:13px;color:rgba(255,255,255,.6);line-height:1.6}
.cred-badges{display:flex;justify-content:center;gap:24px;margin-top:50px;flex-wrap:wrap}
.cred-badge{
  display:flex;align-items:center;gap:10px;padding:12px 24px;
  background:rgba(255,255,255,.08);border-radius:50px;font-size:14px;
  border:1px solid rgba(255,255,255,.15);
}
.cred-badge .icon{width:24px;height:24px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:12px}

/* ===== 联系我们 ===== */
.contact{background:var(--bg)}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;align-items:start}
.contact-info h2{font-size:34px;font-weight:900;color:var(--primary-dark);margin-bottom:16px}
.contact-info .lead{font-size:15px;color:var(--text-light);margin-bottom:36px;line-height:1.9}
.contact-items{display:flex;flex-direction:column;gap:24px}
.contact-item{display:flex;gap:18px;align-items:flex-start}
.contact-item .icon{
  flex-shrink:0;width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,rgba(27,94,32,.1),rgba(67,160,71,.1));
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:22px;
}
.contact-item h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:4px}
.contact-item p{font-size:14px;color:var(--text-light);line-height:1.7}
.contact-form{
  background:var(--bg-gray);padding:40px;border-radius:var(--radius-lg);
  border:1px solid var(--border);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:8px}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:14px 18px;border:1px solid var(--border);border-radius:var(--radius);
  font-size:14px;font-family:inherit;background:#fff;transition:var(--transition);color:var(--text);
}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(67,160,71,.15);
}
.form-group textarea{resize:vertical;min-height:120px}
.form-submit{width:100%}

/* ===== 页脚 ===== */
.footer{background:var(--bg-dark);color:rgba(255,255,255,.7);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:50px;padding-bottom:50px}
.footer-brand .logo{margin-bottom:20px}
.footer-brand .logo-text h1{color:#fff}
.footer-brand .logo-text p{color:rgba(255,255,255,.4)}
.footer-brand p{font-size:14px;line-height:1.9;margin-bottom:24px}
.footer-qrcodes{display:flex;gap:24px;margin-top:8px}
.qrcode-item{text-align:center}
.qrcode-img{
  width:110px;height:110px;background:#fff;border-radius:10px;
  padding:6px;box-shadow:0 4px 12px rgba(0,0,0,.15);
  transition:var(--transition);margin-bottom:10px;
}
.qrcode-item:hover .qrcode-img{transform:translateY(-4px);box-shadow:0 8px 20px rgba(0,0,0,.25)}
.qrcode-img img{width:100%;height:100%;object-fit:cover;border-radius:6px}
.qrcode-item p{font-size:12px;color:rgba(255,255,255,.7);letter-spacing:1px}
.footer-col h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:24px;position:relative;padding-bottom:12px}
.footer-col h4::after{
  content:'';position:absolute;bottom:0;left:0;width:36px;height:3px;
  background:linear-gradient(90deg,var(--accent),transparent);border-radius:2px;
}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:14px;transition:var(--transition);display:inline-flex;align-items:center;gap:6px}
.footer-col ul li a:hover{color:var(--accent-light);padding-left:6px}
.footer-col .contact-line{display:flex;gap:10px;align-items:flex-start;margin-bottom:14px;font-size:14px}
.footer-col .contact-line .icon{flex-shrink:0;color:var(--accent-light);margin-top:2px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:24px 0;
  display:flex;justify-content:space-between;align-items:center;font-size:13px;flex-wrap:wrap;gap:12px;
}
.footer-bottom a{color:var(--accent-light)}

/* ===== 返回顶部 ===== */
.back-top{
  position:fixed;bottom:30px;right:30px;width:50px;height:50px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:var(--transition);z-index:999;border:none;font-size:18px;
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-4px)}

/* ===== 响应式适配 ===== */
@media(max-width:1200px){
  .product-grid{grid-template-columns:repeat(3,1fr)}
  .service-grid{grid-template-columns:repeat(3,1fr)}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:992px){
  .section{padding:70px 0}
  .section-title h2{font-size:30px}
  .hero .container{grid-template-columns:1fr;gap:40px;text-align:center}
  .hero h1{font-size:40px}
  .hero p{margin:0 auto 36px}
  .hero-buttons{justify-content:center}
  .hero-stats{justify-content:center}
  .hero-image{max-width:560px;margin:0 auto}
  .about-grid{grid-template-columns:1fr;gap:50px}
  .about-image{max-width:500px;margin:0 auto}
  .contact-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .cred-grid{grid-template-columns:repeat(2,1fr)}
  .cases-grid{grid-template-columns:repeat(2,1fr)}
  .nav-menu{
    position:fixed;top:80px;left:0;right:0;background:#fff;
    flex-direction:column;padding:20px;gap:4px;box-shadow:var(--shadow-md);
    transform:translateY(-120%);transition:var(--transition);opacity:0;
  }
  .nav-menu.open{transform:translateY(0);opacity:1}
  .nav-menu a{display:block;padding:14px 20px;width:100%}
  .nav-cta{margin:12px 0 0;width:100%}
  .nav-cta .btn{width:100%;justify-content:center}
  .menu-toggle{display:flex}
}
@media(max-width:768px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-title{margin-bottom:40px}
  .section-title h2{font-size:26px}
  .hero{min-height:auto;padding:120px 0 60px}
  .hero h1{font-size:32px}
  .hero p{font-size:15px}
  .hero-stats{gap:24px;flex-wrap:wrap}
  .hero-stat h3{font-size:28px}
  .hero-image .floating-card{display:none}
  .about-content h2{font-size:26px}
  .about-features{grid-template-columns:1fr}
  .about-image .experience-badge{right:0;bottom:-16px;padding:20px 24px}
  .about-image .experience-badge h3{font-size:32px}
  .adv-grid{grid-template-columns:1fr}
  .product-grid{grid-template-columns:1fr 1fr;gap:16px}
  .product-img{height:160px}
  .product-info{padding:16px}
  .product-info h3{font-size:15px}
  .product-info p{font-size:12px;min-height:auto;margin-bottom:10px}
  .service-grid{grid-template-columns:1fr 1fr;gap:14px}
  .service-card{height:220px}
  .service-overlay{padding:16px}
  .service-overlay h3{font-size:15px}
  .cases-grid{grid-template-columns:1fr}
  .case-card{height:240px}
  .cred-grid{grid-template-columns:1fr 1fr;gap:16px}
  .cred-card{padding:28px 16px}
  .cred-card .number{font-size:36px}
  .form-row{grid-template-columns:1fr}
  .contact-form{padding:28px 20px}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;text-align:center}
  .back-top{bottom:20px;right:20px;width:44px;height:44px}
  .filter-btn{padding:8px 18px;font-size:13px}
}
@media(max-width:480px){
  .product-grid{grid-template-columns:1fr}
  .hero-buttons{flex-direction:column;width:100%}
  .hero-buttons .btn{width:100%;justify-content:center}
}