/* ===== Kinbo Lighting - Modern Website Styles ===== */

/* Reset & Base */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Segoe UI','Microsoft YaHei',sans-serif;color:#2d3748;line-height:1.6;background:#fff;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:color .3s}
img{max-width:100%;display:block}
ul{list-style:none}

/* Variables */
:root{
  --primary:#1a365d;
  --primary-light:#2b6cb0;
  --accent:#D3580A;
  --accent-dark:#A84708;
  --bg-light:#f7fafc;
  --bg-gray:#edf2f7;
  --text-dark:#1a202c;
  --text-gray:#718096;
  --white:#fff;
  --shadow:0 4px 20px rgba(0,0,0,.08);
  --shadow-lg:0 10px 40px rgba(0,0,0,.12);
  --radius:8px;
  --transition:all .3s ease;
}

/* Container */
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== Header ===== */
.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 1px 10px rgba(0,0,0,.06);transition:var(--transition)}
.header.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:8px}
.logo-img{height:38px;width:auto;display:block}

/* Nav */
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:15px;font-weight:500;color:var(--text-dark);position:relative;padding:5px 0}
.nav a:hover,.nav a.active{color:var(--accent)}
.nav a.active::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:2px;background:var(--accent);border-radius:2px}
.nav-cta{background:var(--primary);color:#fff !important;padding:8px 20px;border-radius:var(--radius);font-size:14px}
.nav-cta:hover{background:var(--primary-light)}
.mobile-toggle{display:none;font-size:24px;background:none;border:none;cursor:pointer;color:var(--primary)}

/* ===== Hero ===== */
.hero{position:relative;height:100vh;min-height:600px;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;background:linear-gradient(135deg,#1a365d 0%,#2b6cb0 50%,#1a365d 100%)}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url('data:image/svg+xml,<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>');background-size:40px 40px;animation:float 20s linear infinite}
@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-20px)}100%{transform:translateY(0)}}
.hero-content{position:relative;z-index:2;max-width:800px;padding:0 20px}
.hero-content h1{font-size:3.5rem;font-weight:800;color:#fff;margin-bottom:20px;line-height:1.2}
.hero-content h1 span{color:#F57D31}
.hero-content p{font-size:1.3rem;color:rgba(255,255,255,.85);margin-bottom:30px;font-weight:300}
.hero-buttons{display:flex;gap:15px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 36px;border-radius:var(--radius);font-size:16px;font-weight:600;cursor:pointer;transition:var(--transition);border:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 25px rgba(211,88,10,.4)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5)}
.btn-outline:hover{background:#fff;color:var(--primary);border-color:#fff}
.hero-scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.6);font-size:14px;animation:bounce 2s infinite}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-10px)}}

/* ===== Stats Section ===== */
.stats{background:var(--primary);padding:60px 0}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px;text-align:center}
.stat-item{color:#fff}
.stat-number{font-size:2.5rem;font-weight:800;color:#F57D31;margin-bottom:5px}
.stat-label{font-size:14px;color:rgba(255,255,255,.7);text-transform:uppercase;letter-spacing:1px}

/* ===== Section Styles ===== */
.section{padding:80px 0}
.section-alt{background:var(--bg-light)}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:2.2rem;font-weight:800;color:var(--primary);margin-bottom:10px}
.section-title p{color:var(--text-gray);font-size:1.1rem}
.section-title .divider{width:60px;height:3px;background:var(--accent);margin:15px auto;border-radius:2px}

/* ===== About Preview ===== */
.about-preview{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-preview-text h2{font-size:2rem;color:var(--primary);margin-bottom:20px}
.about-preview-text p{color:var(--text-gray);margin-bottom:15px;font-size:1.05rem}
.about-preview-image{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.about-preview-image img{width:100%;height:400px;object-fit:cover}

/* ===== Product Categories ===== */
.categories-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.category-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);cursor:pointer}
.category-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.category-card img{width:100%;height:200px;object-fit:contain;background:#fafafa;padding:14px}
.category-card-body{padding:20px}
.category-card-body h3{font-size:1.1rem;color:var(--primary);margin-bottom:8px}
.category-card-body p{color:var(--text-gray);font-size:.9rem}

/* ===== Product Detail ===== */
.product-category{margin-bottom:60px}
.product-category-header{display:flex;align-items:center;gap:15px;margin-bottom:25px;padding-bottom:15px;border-bottom:2px solid var(--bg-gray)}
.product-category-header h2{font-size:1.6rem;color:var(--primary)}
.product-category-header .count{background:var(--accent);color:#fff;padding:3px 12px;border-radius:20px;font-size:13px}
.product-category-image{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-bottom:25px}
.product-category-image img{width:100%}
.products-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}
.product-item{background:#fff;border:1px solid var(--bg-gray);border-radius:var(--radius);padding:15px;text-align:center;transition:var(--transition)}
.product-item:hover{border-color:var(--primary-light);box-shadow:var(--shadow);transform:translateY(-3px)}
.product-item img{width:100%;height:150px;object-fit:contain;margin-bottom:10px}
.product-item h4{font-size:.95rem;color:var(--primary);margin-bottom:5px}
.product-item .specs{font-size:.8rem;color:var(--text-gray)}
.product-item .price-tag{display:inline-block;margin-top:8px;padding:3px 10px;background:var(--bg-gray);border-radius:4px;font-size:.8rem;color:var(--primary)}

/* ===== About Page ===== */
.about-hero{background:linear-gradient(135deg,var(--primary),var(--primary-light));padding:120px 0 60px;text-align:center;color:#fff}
.about-hero h1{font-size:2.5rem;margin-bottom:15px}
.about-hero p{font-size:1.1rem;opacity:.9}
.about-content{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.about-text h2{color:var(--primary);margin-bottom:15px;font-size:1.5rem}
.about-text p{color:var(--text-gray);margin-bottom:15px}
.about-text ul{margin:15px 0;padding-left:20px}
.about-text ul li{margin-bottom:8px;color:var(--text-gray);position:relative;padding-left:20px}
.about-text ul li::before{content:'\2714';position:absolute;left:0;color:var(--accent)}
.certifications{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:10px;margin-top:20px}
.cert-badge{background:var(--bg-gray);padding:10px;text-align:center;border-radius:4px;font-size:.85rem;font-weight:600;color:var(--primary)}

/* ===== Contact Page ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h2{color:var(--primary);margin-bottom:20px}
.contact-item{display:flex;align-items:start;gap:15px;margin-bottom:20px}
.contact-item .icon{width:45px;height:45px;background:var(--bg-light);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.contact-item .details h4{color:var(--primary);margin-bottom:3px;font-size:1rem}
.contact-item .details p{color:var(--text-gray);font-size:.95rem}
.contact-form{background:var(--bg-light);padding:30px;border-radius:var(--radius)}
.form-group{margin-bottom:20px}
.form-group label{display:block;margin-bottom:5px;font-weight:500;color:var(--text-dark);font-size:.9rem}
.form-group input,.form-group textarea{width:100%;padding:12px;border:1px solid var(--bg-gray);border-radius:6px;font-size:15px;transition:var(--transition)}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(43,108,176,.1)}
.form-group textarea{resize:vertical;min-height:120px}
.map-container{margin-top:30px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.map-container img{width:100%}

/* ===== Footer ===== */
.footer{background:var(--text-dark);color:rgba(255,255,255,.7);padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{color:#fff;margin-bottom:15px;font-size:1rem}
.footer-col ul li{margin-bottom:8px;font-size:.9rem}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:.85rem}

/* ===== Responsive ===== */
@media(max-width:768px){
  .nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;box-shadow:var(--shadow-lg);gap:15px}
  .nav.active{display:flex}
  .mobile-toggle{display:block}
  .hero-content h1{font-size:2rem}
  .hero-content p{font-size:1rem}
  .about-preview,.about-content,.contact-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .section{padding:50px 0}
}
@media(max-width:480px){
  .hero-content h1{font-size:1.6rem}
  .stats-grid{grid-template-columns:1fr}
  .categories-grid{grid-template-columns:1fr}
}

/* ===== Animations ===== */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .6s,transform .6s}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ===== 产品页：品类导航 + 描述（2026-08-09 目录重建新增）===== */
.cat-nav{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px;position:sticky;top:70px;z-index:900;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);padding:14px 0;border-bottom:1px solid var(--bg-gray)}
.cat-nav a{display:inline-flex;align-items:center;gap:7px;padding:8px 16px;border:1px solid var(--bg-gray);border-radius:20px;font-size:14px;color:var(--text-dark);background:#fff;transition:var(--transition)}
.cat-nav a:hover{border-color:var(--accent);color:var(--accent)}
.cat-nav a em{font-style:normal;font-size:12px;color:#fff;background:var(--accent);border-radius:10px;padding:1px 7px}
.cat-desc{color:var(--text-gray);font-size:.92rem;margin:-10px 0 22px;line-height:1.6}
.product-item img{background:#fff}
@media(max-width:768px){.cat-nav{top:60px;padding:10px 0}.cat-nav a{padding:6px 12px;font-size:13px}}

/* ===== 语言切换 ===== */
.lang-toggle{margin-left:14px;padding:6px 14px;border:1px solid var(--bg-gray);border-radius:20px;
  background:#fff;color:var(--text-dark);font-size:13px;cursor:pointer;transition:var(--transition)}
.lang-toggle:hover{border-color:var(--accent);color:var(--accent)}

/* ===== 主推产品轮播（独立一段，位于蓝色 hero 之下）===== */
.feat{padding:56px 0 40px;background:#fff;border-bottom:1px solid var(--bg-gray)}
.feat-head{text-align:center;margin-bottom:30px}
.feat-head h2{font-size:1.9rem;color:var(--primary);margin-bottom:8px}
.feat-head p{color:var(--text-gray);font-size:.95rem}
.feat-wrap{position:relative}
.feat-track{display:flex;transition:transform .55s cubic-bezier(.4,0,.2,1);will-change:transform}
.feat-slide{min-width:100%;display:flex;align-items:center;gap:38px}
.feat-slide img{width:44%;max-width:460px;height:220px;object-fit:contain;background:var(--bg-light);
  border-radius:var(--radius);padding:12px}
.feat-body{flex:1}
.feat-body .eyebrow{display:inline-block;background:var(--accent);color:#fff;font-size:11px;
  letter-spacing:.4px;padding:3px 12px;border-radius:20px;margin-bottom:10px}
.feat-body h3{font-size:1.45rem;color:var(--primary);margin-bottom:6px}
.feat-body .model{font-family:Menlo,monospace;font-size:1.2rem;color:var(--accent);font-weight:700;margin-bottom:10px}
.feat-body p{color:var(--text-gray);font-size:.92rem;line-height:1.7;margin-bottom:16px}
.feat-nav{position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;
  border:1px solid var(--bg-gray);background:#fff;box-shadow:var(--shadow);cursor:pointer;
  font-size:17px;color:var(--primary);z-index:5}
.feat-nav:hover{border-color:var(--accent);color:var(--accent)}
#featPrev{left:-8px} #featNext{right:-8px}
.feat-dots{display:flex;gap:7px;justify-content:center;margin-top:24px}
.feat-dot{width:8px;height:8px;border-radius:50%;border:none;background:var(--bg-gray);cursor:pointer;padding:0;
  transition:var(--transition)}
.feat-dot.active{background:var(--accent);width:22px;border-radius:4px}
@media(max-width:768px){
  .feat-slide{flex-direction:column;gap:16px;text-align:center}
  .feat-slide img{width:100%;height:180px}
  #featPrev{left:-4px} #featNext{right:-4px}
  .feat-nav{width:30px;height:30px;font-size:14px}
}