/* --- 1. Modern Variables & Reset --- */
:root {
    --primary: #ff6b00;      /* 泰坦橙 */
    --primary-hover: #e65100;
    --dark: #1e293b;         /* 深空灰 */
    --text-main: #334155;    /* 灰 */
    --text-light: #64748b;   /* 浅灰 */
    --bg-light: #f8fafc;
    --white: #ffffff;
    
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --radius: 16px;
    
    --font-main: 'Manrope', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-main); color: var(--text-main); background: #fff; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.text-center { text-align: center; }
.bg-dark-modern { background: var(--dark); color: #fff; }

/* Typography */
h1, h2, h3, h4 { color: var(--dark); font-weight: 800; letter-spacing: -0.02em; }
.sec-head { margin-bottom: 60px; }
.sec-head h2 { font-size: 36px; margin-bottom: 15px; }
.sec-head p { font-size: 18px; color: var(--text-light); }
.flex-between { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 50px; }

/* Buttons */
.btn-primary {
    background: var(--primary); color: #fff;
    padding: 10px 24px; border-radius: 50px; font-weight: 600;
    box-shadow: 0 4px 12px rgba(255, 107, 0, 0.3);
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); }

.btn-primary-lg {
    background: var(--primary); color: #fff;
    padding: 14px 36px; border-radius: 50px; font-weight: 700; font-size: 16px;
    box-shadow: 0 10px 20px rgba(255, 107, 0, 0.3); display: inline-block;
}
.btn-primary-lg:hover { background: var(--primary-hover); transform: translateY(-3px); }

.btn-outline-lg {
    background: transparent; border: 2px solid rgba(255,255,255,0.3); color: #fff;
    padding: 12px 34px; border-radius: 50px; font-weight: 600; font-size: 16px; display: inline-block;
}
.btn-outline-lg:hover { background: #fff; color: var(--dark); border-color: #fff; }

.btn-more-full {
    display: block; text-align: center; width: 100%;
    padding: 12px 0; background: #f1f5f9; color: var(--text-main);
    font-weight: 600; border-radius: 8px; font-size: 14px; margin-top: 20px;
}
.btn-more-full:hover { background: var(--primary); color: #fff; }

/* --- 2. Navbar --- */
#navbar {
    position: fixed; top: 0; width: 100%; height: 80px; z-index: 1000;
    background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.03);
}
.nav-inner { display: flex; justify-content: space-between; align-items: center; height: 100%; }

.logo { display: flex; align-items: center; gap: 10px; }
.logo-box { 
    background: var(--primary); color: #fff; width: 36px; height: 36px; 
    border-radius: 8px; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 20px;
}
.logo-text { font-size: 20px; font-weight: 800; color: var(--dark); letter-spacing: -0.03em; }
.logo-text .light { font-weight: 400; }

.nav-links { display: flex; gap: 40px; }
.nav-links a { font-weight: 600; font-size: 15px; color: var(--text-main); }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }

.nav-right { display: flex; align-items: center; gap: 20px; }
.lang-link { font-weight: 600; font-size: 14px; color: var(--text-light); }
.mobile-toggle { display: none; font-size: 24px; cursor: pointer; }

/* --- 3. Hero --- */
.hero { position: relative; height: 85vh; min-height: 600px; display: flex; align-items: center; overflow: hidden; }
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: url('/assets/enterprise/1/img/4.jpeg') center/cover;
    z-index: -2;
}
.hero-bg::after {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(90deg, #0f172a 0%, rgba(15, 23, 42, 0.8) 50%, rgba(15, 23, 42, 0.4) 100%);
    z-index: -1;
}

.hero-content { position: relative; z-index: 1; width: 100%; display: flex; align-items: center; justify-content: space-between; }
.hero-text { max-width: 600px; color: #fff; }

.badge-industrial { 
    display: inline-block; background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255,255,255,0.2);
    color: var(--primary); padding: 6px 14px; border-radius: 30px; font-size: 12px; font-weight: 700; 
    margin-bottom: 24px; text-transform: uppercase; letter-spacing: 1px;
}
.hero h1 { font-size: 64px; line-height: 1.1; margin-bottom: 24px; color: #fff; }
.text-highlight { color: var(--primary); }
.hero p { font-size: 18px; color: rgba(255,255,255,0.8); margin-bottom: 40px; }
.hero-btns { display: flex; gap: 20px; }

.hero-stats-card {
    background: rgba(255,255,255,0.1); backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1); border-radius: 20px;
    padding: 30px; display: flex; flex-direction: column; gap: 20px;
    min-width: 200px;
}
.stat strong { font-size: 32px; color: #fff; display: block; line-height: 1; margin-bottom: 5px; }
.stat span { font-size: 13px; color: rgba(255,255,255,0.6); text-transform: uppercase; }
.divider { height: 1px; background: rgba(255,255,255,0.1); width: 100%; }

/* --- 4. Products --- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.prod-card {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    border: 1px solid rgba(0,0,0,0.03); transition: 0.3s;
}
.prod-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }

.prod-img { height: 260px; overflow: hidden; position: relative; }
.prod-img img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.prod-card:hover .prod-img img { transform: scale(1.05); }
.card-badge {
    position: absolute; top: 20px; right: 20px; background: var(--primary); color: #fff;
    padding: 4px 10px; border-radius: 6px; font-size: 12px; font-weight: 700;
}

.prod-info { padding: 30px; }
.prod-info h3 { font-size: 20px; margin-bottom: 10px; }
.prod-info p { font-size: 14px; color: var(--text-light); margin-bottom: 20px; }
.link-arrow { color: var(--primary); font-weight: 700; font-size: 14px; display: inline-flex; align-items: center; gap: 5px; }
.link-arrow:hover { gap: 10px; }

/* --- 5. Solutions --- */
.bg-dark-modern { background: var(--dark); color: #fff; }
.solution-wrap { display: flex; align-items: center; gap: 80px; }
.sol-text { flex: 1; }
.sol-text h2 { color: #fff; margin-bottom: 20px; font-size: 42px; }
.sol-text p { color: rgba(255,255,255,0.7); font-size: 16px; margin-bottom: 40px; }
.sub-title { color: var(--primary); font-weight: 700; letter-spacing: 1px; margin-bottom: 10px; display: block; }

.feature-list { display: flex; flex-direction: column; gap: 30px; }
.f-item { display: flex; gap: 20px; }
.icon-circle {
    width: 50px; height: 50px; border-radius: 12px; background: rgba(255,255,255,0.1);
    color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.f-item h4 { color: #fff; font-size: 18px; margin-bottom: 5px; }
.f-item p { color: rgba(255,255,255,0.5); font-size: 14px; margin: 0; }

.sol-img { flex: 1; position: relative; }
.sol-img img { border-radius: 20px; }
.float-review {
    position: absolute; bottom: -30px; left: -30px; background: #fff;
    padding: 25px; border-radius: 16px; box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    max-width: 300px;
}
.stars { color: #fbbf24; margin-bottom: 10px; }
.float-review p { color: var(--dark); font-style: italic; font-weight: 600; margin-bottom: 10px; font-size: 14px; }
.float-review span { color: var(--text-light); font-size: 12px; }

/* --- 6. News (Modern Grid) --- */
.news-modern-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.news-card {
    background: #fff; padding: 30px; border-radius: var(--radius);
    border: 1px solid #f1f5f9; transition: 0.3s;
}
.news-card:hover { border-color: transparent; box-shadow: var(--shadow-lg); }

.card-header { display: flex; align-items: center; gap: 15px; margin-bottom: 25px; border-bottom: 1px solid #f8fafc; padding-bottom: 20px; }
.icon-bg {
    width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px;
}
.orange { background: linear-gradient(135deg, #ff6b00, #ff9e42); }
.blue { background: linear-gradient(135deg, #3b82f6, #60a5fa); }
.gray { background: linear-gradient(135deg, #64748b, #94a3b8); }

.card-header h4 { font-size: 18px; margin: 0; }

.news-list-clean li { margin-bottom: 15px; }
.news-list-clean a { display: block; }
.news-list-clean .title { font-size: 15px; font-weight: 600; color: var(--text-main); line-height: 1.5; margin-bottom: 4px; transition: 0.2s; }
.news-list-clean a:hover .title { color: var(--primary); }
.news-list-clean .date { font-size: 12px; color: #94a3b8; }

/* --- 7. Footer --- */
footer { background: #fff; padding: 80px 0 30px; border-top: 1px solid #f1f5f9; }
.footer-content { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; }
.f-brand h3 { font-size: 24px; margin-bottom: 5px; }
.f-brand p { font-size: 14px; color: var(--text-light); }

.f-nav a { margin: 0 20px; font-weight: 600; font-size: 14px; color: var(--text-main); }
.f-nav a:hover { color: var(--primary); }
.f-social a { margin-left: 20px; font-size: 20px; color: #cbd5e1; }
.f-social a:hover { color: var(--primary); }

.f-copy { text-align: center; color: #cbd5e1; font-size: 13px; border-top: 1px solid #f8fafc; padding-top: 30px; }

/* Responsive */
@media (max-width: 992px) {
    .hero { height: auto; padding: 120px 0; }
    .hero-content { flex-direction: column; text-align: center; }
    .hero-stats-card { flex-direction: row; margin-top: 40px; width: 100%; justify-content: space-around; }
    .hero-btns { justify-content: center; }
    .divider { width: 1px; height: 100%; }
    
    .product-grid, .news-modern-grid { grid-template-columns: 1fr; }
    .solution-wrap { flex-direction: column; }
    .nav-links, .nav-right .btn-primary { display: none; }
    .mobile-toggle { display: block; }
    
    .footer-content { flex-direction: column; gap: 30px; }
}