/* CSS Document */

<style>

/* ===== 导航栏 - 黑石风格 ===== */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255,255,255,0.95);
            border-bottom: 1px solid #ececec;
            z-index: 1000;
            transition: background 0.4s ease, box-shadow 0.4s ease;
        }

        nav.nav-scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 20px rgba(0,0,0,0.08);
            border-bottom-color: transparent;
        }
        
        .nav-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 28px;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }

        .logo img {
            height: 58px;
            width: auto;
            display: block;
            opacity: 1;
            transform: translateX(0);
            transition: opacity 0.4s ease, transform 0.4s ease;
        }

        nav.nav-scrolled .logo img {
            opacity: 1;
            transform: translateX(0);
        }

        .nav-links {
            display: flex;
            gap: 36px;
            list-style: none;
        }
        
        .nav-links a {
            color: #333;
            text-decoration: none;
            transition: color 0.3s ease;
            font-weight: 400;
            font-size: 14px;
            letter-spacing: 0.3px;
            position: relative;
            padding-bottom: 4px;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s ease;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        nav.nav-scrolled .nav-links a {
            color: #333;
        }
        
        .nav-links a:hover {
            color: var(--primary);
        }

        nav.nav-scrolled .nav-links a:hover {
            color: var(--primary);
        }
        
		/* 咨询热线下拉 */
        .nav-hotline-wrap {
            position: relative;
        }
		
        .nav-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 10px 24px;
            border-radius: 2px;
            cursor: pointer;
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }
        
        .nav-btn:hover {
            background: #b71c1c;
        }

        /* ===== 移动端汉堡菜单 ===== */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            flex-direction: column;
            gap: 5px;
            z-index: 1001;
        }

        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: #333;
            transition: all 0.3s ease;
            transform-origin: center;
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.3);
            z-index: 998;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-overlay.active {
            display: block;
            opacity: 1;
        }
		
		 /* 页脚 - 黑石深色风格 */
        footer {
            background: #111111;
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 60px 0 20px;
            margin-top: 0;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-section h4 {
            margin-bottom: 20px;
            color: #ffffff;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        
        .footer-section a {
            display: block;
            color: rgba(255,255,255,0.5);
            text-decoration: none;
            margin-bottom: 10px;
            transition: color 0.3s ease;
            font-size: 13px;
        }
        
        .footer-section a:hover {
            color: var(--primary);
        }

        .footer-section p {
            color: rgba(255,255,255,0.45);
            font-size: 13px;
        }

        .qr-links {
            display: flex;
            gap: 14px;
            margin-top: 10px;
            flex-wrap: wrap;
        }

        .qr-link {
            background: transparent;
            border: 1px dashed rgba(211, 47, 47, 0.6);
            color: var(--primary);
            padding: 6px 12px;
            border-radius: 2px;
            font-size: 13px;
            cursor: pointer;
        }

        .qr-link:hover {
            background: rgba(211, 47, 47, 0.15);
        }

        .qr-modal {
            position: fixed;
            inset: 0;
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 2000;
        }

        .qr-modal.open {
            display: flex;
        }

        .qr-modal-backdrop {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.45);
            backdrop-filter: blur(2px);
        }

        .qr-modal-content {
            position: relative;
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            width: min(320px, 90vw);
            text-align: center;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
            z-index: 1;
        }

        .qr-modal-content img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin-top: 12px;
        }

        .qr-modal-close {
            position: absolute;
            top: 8px;
            right: 8px;
            width: 32px;
            height: 32px;
            border: none;
            background: #f3f3f3;
            border-radius: 50%;
            cursor: pointer;
            font-size: 18px;
            line-height: 32px;
        }


        
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            color: rgba(255,255,255,0.35);
			font-size: 13px;
        }
        
		.footer-bottom a {
            color: rgba(255,255,255,0.5);
            text-decoration: none;
            margin-bottom: 10px;
            transition: color 0.3s ease;
            font-size: 13px;
        }
        
        .footer-bottom a:hover {
            color: var(--primary);
        }
		
</style>