/* ===== lift_blue: 工业蓝 ===== */
:root {
    --tpl-primary: #0052cc;
    --tpl-secondary: #0041a3;
    --tpl-accent: #0087ff;
    --tpl-hero-bg: #f0f5fa;
    --tpl-dark: #1a2640;
    --tpl-light: #f5f8ff;
    --tpl-gradient: linear-gradient(135deg, #0052cc, #0041a3);
    --tpl-text: #333;
    --tpl-text-light: #666;
    --tpl-radius: 6px;
    --tpl-border: rgba(0,0,0,0.08);
    --tpl-shadow: 0 4px 15px rgba(0,0,0,0.06);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif; background: #f5f7f9; color: #333; line-height: 1.6; }
a { color: var(--tpl-primary); text-decoration: none; transition: all 0.3s; }
a:hover { color: var(--tpl-accent); }
img { max-width: 100%; height: auto; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.lift-header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.06); position: sticky; top: 0; z-index: 1000; border-bottom: 3px solid var(--tpl-primary); }
.lift-nav { display: flex; justify-content: space-between; align-items: center; padding: 0; }
.lift-logo { font-size: 20px; font-weight: 700; color: var(--tpl-primary); display: flex; align-items: center; gap: 10px; padding: 15px 0; }
.lift-logo-icon { width: 44px; height: 44px; background: var(--tpl-gradient); color: #fff; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.lift-menu { display: flex; gap: 0; list-style: none; }
.lift-menu li { border-left: 1px solid var(--tpl-border); }
.lift-menu a { display: block; color: #444; font-size: 14px; padding: 18px 22px; border-right: 1px solid var(--tpl-border); }
.lift-menu a:hover { background: var(--tpl-hero-bg); color: var(--tpl-primary); }

/* Hero */
.lift-hero { background: #fff; min-height: 500px; display: flex; align-items: center; padding: 60px 0; position: relative; overflow: hidden; }
.lift-hero::before { content: ''; position: absolute; top: 0; right: 0; width: 50%; height: 100%; background: var(--tpl-hero-bg); }
.lift-hero-content { max-width: 55%; position: relative; z-index: 2; }
.lift-hero-badge { display: inline-flex; align-items: center; gap: 6px; background: var(--tpl-accent); color: #fff; padding: 6px 14px; border-radius: 4px; font-size: 12px; margin-bottom: 18px; text-transform: uppercase; letter-spacing: 1px; }
.lift-hero h1 { font-size: 2.4rem; font-weight: 800; color: var(--tpl-dark); margin-bottom: 18px; line-height: 1.3; }
.lift-hero h1 strong { color: var(--tpl-primary); }
.lift-hero p { font-size: 1rem; color: #555; margin-bottom: 25px; line-height: 1.8; }
.lift-hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.lift-btn { display: inline-flex; align-items: center; gap: 6px; padding: 12px 24px; border-radius: var(--tpl-radius); font-weight: 600; font-size: 14px; transition: all 0.3s; }
.lift-btn-primary { background: var(--tpl-gradient); color: #fff; border: none; }
.lift-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); color: #fff; }
.lift-btn-outline { background: transparent; border: 2px solid var(--tpl-primary); color: var(--tpl-primary); }
.lift-btn-outline:hover { background: var(--tpl-primary); color: #fff; }

/* Products Grid */
.lift-products { padding: 70px 0; background: #fff; }
.lift-section-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 40px; border-bottom: 2px solid var(--tpl-border); padding-bottom: 15px; }
.lift-section-header h2 { font-size: 1.6rem; font-weight: 700; color: var(--tpl-dark); }
.lift-section-header p { color: #888; font-size: 14px; }
.lift-products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.lift-product-card { background: #fff; border: 1px solid var(--tpl-border); border-radius: var(--tpl-radius); overflow: hidden; transition: all 0.3s; }
.lift-product-card:hover { transform: translateY(-4px); box-shadow: var(--tpl-shadow); border-color: var(--tpl-accent); }
.lift-product-img { height: 160px; background: var(--tpl-hero-bg); display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--tpl-border); }
.lift-product-img i { font-size: 3rem; color: var(--tpl-accent); opacity: 0.5; }
.lift-product-info { padding: 18px; }
.lift-product-info h4 { font-size: 0.95rem; color: var(--tpl-dark); margin-bottom: 8px; }
.lift-product-info p { color: #888; font-size: 13px; }

/* Features */
.lift-features { padding: 70px 0; background: var(--tpl-hero-bg); }
.lift-features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.lift-feature-item { background: #fff; border-radius: var(--tpl-radius); padding: 25px; text-align: center; border: 1px solid var(--tpl-border); }
.lift-feature-icon { width: 50px; height: 50px; background: var(--tpl-gradient); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 15px; font-size: 20px; }
.lift-feature-item h4 { font-size: 0.95rem; color: var(--tpl-dark); margin-bottom: 8px; }
.lift-feature-item p { color: #777; font-size: 13px; }

/* About Grid */
.lift-about { padding: 70px 0; background: #fff; }
.lift-about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.lift-about-img { border-radius: var(--tpl-radius); overflow: hidden; aspect-ratio: 4/3; background: var(--tpl-hero-bg); display: flex; align-items: center; justify-content: center; border: 1px solid var(--tpl-border); }
.lift-about-img i { font-size: 4rem; color: var(--tpl-accent); opacity: 0.5; }
.lift-about-content h3 { font-size: 1.4rem; color: var(--tpl-dark); margin-bottom: 15px; }
.lift-about-content p { color: #555; margin-bottom: 12px; line-height: 1.8; }
.lift-about-list { list-style: none; margin-top: 20px; }
.lift-about-list li { padding: 8px 0; color: #555; font-size: 14px; display: flex; align-items: center; gap: 10px; }
.lift-about-list li::before { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--tpl-accent); }

/* Stats Bar */
.lift-stats { background: var(--tpl-gradient); color: #fff; padding: 50px 0; }
.lift-stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.lift-stat-item { padding: 15px; }
.lift-stat-num { font-size: 2.5rem; font-weight: 800; }
.lift-stat-label { font-size: 13px; opacity: 0.85; margin-top: 5px; }

/* News */
.lift-news { padding: 70px 0; background: var(--tpl-hero-bg); }
.lift-news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.lift-news-card { background: #fff; border-radius: var(--tpl-radius); padding: 20px; border: 1px solid var(--tpl-border); }
.lift-news-date { color: var(--tpl-accent); font-size: 12px; margin-bottom: 10px; }
.lift-news-card h4 { font-size: 0.95rem; color: var(--tpl-dark); margin-bottom: 10px; line-height: 1.4; }
.lift-news-card p { color: #777; font-size: 13px; }

/* CTA */
.lift-cta { padding: 70px 0; background: #fff; text-align: center; border-top: 1px solid var(--tpl-border); }
.lift-cta h2 { font-size: 1.6rem; color: var(--tpl-dark); margin-bottom: 12px; }
.lift-cta p { color: #666; margin-bottom: 25px; }

/* Footer */
.lift-footer { background: var(--tpl-dark); color: rgba(255,255,255,0.65); padding: 50px 0 25px; }
.lift-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 35px; margin-bottom: 35px; }
.lift-footer h4 { color: #fff; font-size: 0.95rem; margin-bottom: 15px; }
.lift-footer ul { list-style: none; }
.lift-footer ul li { margin-bottom: 8px; }
.lift-footer ul a { color: rgba(255,255,255,0.55); font-size: 13px; }
.lift-footer ul a:hover { color: var(--tpl-accent); }
.lift-footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; font-size: 12px; }

/* Responsive */
@media (max-width: 992px) { .lift-products-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { 
    .lift-menu { display: none; }
    .lift-hero-content { max-width: 100%; }
    .lift-hero::before { display: none; }
    .lift-hero h1 { font-size: 1.8rem; }
    .lift-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .lift-features-grid { grid-template-columns: repeat(2, 1fr); }
    .lift-about-grid { grid-template-columns: 1fr; }
    .lift-news-grid { grid-template-columns: 1fr; }
    .lift-footer-grid { grid-template-columns: 1fr 1fr; }
}