/* =========================================================
   1. 全局变量与基础重置 (Global Variables & Reset)
========================================================= */
:root { 
    --brand-primary: #004080; 
    --brand-primary-light: #E6F0FA; 
    --brand-accent: #FF6600; 
    --brand-accent-hover: #E55C00; 
    --bg-body: #F4F7F9; 
    --bg-surface: #FFFFFF; 
    --bg-footer: #0A192F; 
    --text-heading: #1A202C; 
    --text-body: #4A5568; 
    --text-muted: #A0AEC0; 
    --border-color: #E2E8F0; 
    
    /* 阴影与过渡参数 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.02), 0 1px 2px rgba(0,0,0,0.04); 
    --shadow-md: 0 10px 20px -5px rgba(0, 64, 128, 0.15), 0 8px 10px -6px rgba(0, 64, 128, 0.1); 
    --shadow-lg: 0 20px 30px -10px rgba(0, 64, 128, 0.2), 0 10px 15px -5px rgba(0, 64, 128, 0.1); 
    --shadow-glow: 0 0 20px rgba(255, 102, 0, 0.4); 
    --radius-md: 6px; 
    --radius-lg: 12px; 
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1); 
    
    /* 机甲风切角 */
    --clip-mech: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px); 
    --clip-arrow: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px); 
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { overscroll-behavior-y: none; }
html { scrollbar-gutter: stable both-edges; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Microsoft YaHei", sans-serif; background-color: var(--bg-body); color: var(--text-body); overflow-x: hidden; line-height: 1.6; font-size: 15px; overflow-anchor: none; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* 自定义滚动条 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-body); }
::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--brand-accent); }

/* 页面滚动入场动画 (JS触发) */
.reveal { opacity: 0; transform: translateY(40px); transition: 0.8s cubic-bezier(0.25, 1, 0.5, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s; }

.back-to-top{position:fixed;right:0px;bottom:50px;width:45px;height:45px;background:var(--brand-accent);color:var(--bg-surface);box-shadow:var(--shadow-md);border-radius:var(--radius-md);transition:var(--transition);display:flex;justify-content:center;align-items:center;font-size:20px;cursor:pointer;z-index:999;border:none;opacity:0;visibility:hidden;transform:translateY(20px)}
.back-to-top:hover{background:var(--brand-accent-hover);box-shadow:var(--shadow-lg)}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}

/* Stabilize sticky/fixed layers to reduce scroll flicker at page edges */
.header,
.main-nav,
.sidebar,
.back-to-top,
.float-bar,
.mobile-bottom-nav {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    will-change: transform;
}

/* =========================================================
   2. 顶部 Header 区域 (.header)
========================================================= */
.header { height: 90px; display: flex; justify-content: space-between; align-items: center; background: linear-gradient(90deg, #000000 0%, rgba(0,0,0,0.4) 40%, rgba(0,0,0,0.6) 100%), url('../image/top-bg.jpg') center 50% / cover no-repeat; box-shadow: 0 4px 20px rgba(0,0,0,0.6); position: sticky; top: 0; z-index: 10000; width: 100%; }
.header-left { height: 100%; display: flex; align-items: center; padding: 0; }
.logo-box { width: 310px; height: 100%; display: flex; align-items: center; padding: 0 25px; background: #fff; clip-path: polygon(0 0, 100% 0, 280px 100%, 0% 100%); transition: var(--transition); }
.logo-box:hover { padding-left: 35px; }
.logo-box .brand { display: flex; align-items: center; }
.logo-box .brand img { max-height: 68px; width: auto; transition: transform 0.4s; }
.logo-box:hover .brand img { transform: scale(1.05); }
.logo-mobile { display: none !important; }

.header-center { flex: 1; padding-left: 10px; }
.header-center h1 { font-size: 24px; font-weight: 900; color: var(--brand-accent); text-shadow: 0 3px 6px rgba(0,0,0,0.9), 0 0 15px rgba(255,102,0,0.5); display: flex; align-items: center; gap: 15px; }

.header-right { display: flex; align-items: center; gap: 15px; padding-right: 40px; }

/* 搜索框 */
.search-bar { display: flex; background: rgba(0,0,0,0.4); border: 1px solid rgba(255,255,255,0.2); border-radius: 4px; overflow: hidden; transition: var(--transition); width: 280px; height: 42px; backdrop-filter: blur(5px); }
.search-bar:focus-within { border-color: var(--brand-accent); box-shadow: var(--shadow-glow); background: rgba(0,0,0,0.7); }
.search-bar input { flex: 1; border: none; background: transparent; padding: 0 15px; outline: none; font-size: 14px; color: #fff; }
.search-bar button { background: rgba(255,255,255,0.15); color: #fff; border: none; padding: 0 20px; cursor: pointer; transition: var(--transition); }
.search-bar button:hover { background: var(--brand-accent); color: #fff; }

/* 语言切换组件 */
.lang-switch { position: relative; margin-right: 5px; z-index: 10002; }
.lang-current { display: flex; align-items: center; gap: 8px; height: 42px; padding: 0 15px; border-radius: 4px; background: rgba(0,0,0,0.4); border: 1px solid rgba(255,255,255,0.2); color: #fff; font-size: 14px; font-weight: bold; cursor: pointer; backdrop-filter: blur(5px); transition: var(--transition); }
.lang-current i { font-size: 12px; transition: 0.3s; color: #A0AEC0; }
.lang-switch:hover .lang-current { border-color: var(--brand-accent); box-shadow: var(--shadow-glow); }
.lang-switch:hover .lang-current i { transform: rotate(180deg); color: var(--brand-accent); }

.lang-dropdown { position: absolute; top: 50px; right: 0; width: 150px; background: rgba(10, 25, 47, 0.95); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.15); border-top: 3px solid var(--brand-accent); border-radius: 4px; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(10px); transition: var(--transition); display: flex; flex-direction: column; overflow: hidden; }
.lang-switch:hover .lang-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-dropdown a { display: flex; align-items: center; gap: 12px; padding: 12px 18px; color: #CBD5E1; font-size: 13px; font-weight: 600; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.05); transition: 0.3s; }
.lang-dropdown a:hover { background: rgba(255,102,0,0.15); color: #fff; padding-left: 22px; border-left: 2px solid var(--brand-accent); }
.lang-dropdown a:last-child { border-bottom: none; }
.lang-switch .fi { font-size: 16px; border-radius: 2px; box-shadow: 0 0 2px rgba(0,0,0,0.5); }

/* 登录注册按钮 */
.contact-btn { display: flex; align-items: center; gap: 8px; font-weight: bold; color: #fff; border: 1px solid rgba(255,255,255,0.3); padding: 0 25px; height: 42px; border-radius: 4px; transition: var(--transition); cursor: pointer; background: rgba(0,0,0,0.4); position: relative; overflow: hidden; backdrop-filter: blur(5px); }
.contact-btn::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent); transition: 0.5s; }
.contact-btn:hover { background: var(--brand-accent); border-color: var(--brand-accent); box-shadow: var(--shadow-glow); }
.contact-btn:hover::before { left: 100%; }

/* 移动端菜单按钮 */
.mobile-menu-btn { display: none; font-size: 26px; color: #fff; cursor: pointer; z-index: 10001; }


/* =========================================================
   3. 布局外壳与左侧检索栏 (.sidebar)
========================================================= */
.layout-wrapper { display: flex; width: 100%; min-height: calc(100vh - 90px); align-items: flex-start; }
.sidebar { width: 200px; flex-shrink: 0; background: var(--bg-surface); border-right: 1px solid var(--border-color); height: calc(100vh - 90px); position: sticky; top: 90px; display: flex; flex-direction: column; z-index: 90; }

.az-filter { padding: 25px 20px; background: var(--bg-body); border-bottom: 1px solid var(--border-color); }
.az-title { font-size: 18px; font-weight: 800; color: var(--brand-primary); margin-bottom: 15px; display: flex; align-items: center; text-transform: uppercase; gap: 8px; }
.az-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; }
.az-grid span { height: 30px; display: flex; align-items: center; justify-content: center; background: #fff; border: 1px solid var(--border-color); border-radius: 4px; font-size: 12px; font-weight: 600; cursor: pointer; transition: var(--transition); color: var(--text-body); }
.az-grid span:hover { border-color: var(--brand-primary); color: var(--brand-primary); transform: translateY(-3px) scale(1.1); box-shadow: var(--shadow-sm); }
.az-grid span.active { background: var(--brand-accent); color: #fff; border-color: var(--brand-accent); box-shadow: var(--shadow-glow); transform: translateY(-2px); }
.az-grid span.active-all { grid-column: span 2; background: var(--brand-primary); color: #fff; }

.brand-list { flex: 1; overflow-y: auto; padding: 15px 0; }
.brand-list li { padding: 15px 25px; border-bottom: 1px dashed var(--border-color); font-weight: 600; font-size: 17px; cursor: pointer; transition: var(--transition); display: flex; align-items: center; position: relative; }
.brand-list li::before { content:''; position: absolute; left: 0; top: 0; height: 100%; width: 4px; background: var(--brand-accent); transform: scaleY(0); transition: var(--transition); }
.brand-list li:hover::before, .brand-list li.active::before { transform: scaleY(1); }
.brand-list li:hover, .brand-list li.active { color: var(--brand-primary); background: var(--brand-primary-light); padding-left: 35px; letter-spacing: 1px; }
.brand-list li a { display: flex; align-items: center; width: 100%; color: inherit; }
.brand-list li i { padding-right: 10px; }


/* =========================================================
   4. 右侧主内容区 & 顶部主导航 (.main-nav)
========================================================= */
.main-content { flex: 1; min-width: 0; background: var(--bg-body); position: relative; }
.mobile-tools-bar { display: none; }
.main-nav { background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%); backdrop-filter: blur(10px); display: flex; align-items: center; position: sticky; top: 90px; z-index: 80; border-bottom: 1px solid #E2E8F0; box-shadow: 0 4px 15px -5px rgba(0,0,0,0.05); padding: 0 10px; }
.main-nav li { position: relative; }
.main-nav li:not(:last-child)::after { content: ''; position: absolute; right: 0; top: 50%; transform: translateY(-50%) rotate(20deg); width: 1px; height: 18px; background: #CBD5E1; pointer-events: none; }
.main-nav li > a { display: flex; align-items: center; gap: 10px; height: 64px; padding: 0 10px; font-weight: 700; color: var(--text-body); font-size: 16px; transition: var(--transition); position: relative; overflow: hidden; }
.main-nav li > a::before { content: ''; display: block; width: 6px; height: 6px; border-radius: 50%; background: #CBD5E1; transition: var(--transition); }
.main-nav li > a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background: var(--brand-accent); transition: transform 0.4s cubic-bezier(0.86, 0, 0.07, 1); transform: translateX(-101%); }
.main-nav li:hover > a ,.main-nav li.active > a { color: var(--brand-primary); background: linear-gradient(to top, rgba(0, 64, 128, 0.05) 0%, transparent 100%); }
.main-nav li:hover > a::before, .main-nav li.active > a::before { background: var(--brand-accent); box-shadow: 0 0 8px rgba(255, 102, 0, 0.6); }
.main-nav li:hover > a::after, .main-nav li.active > a::after { transform: translateX(0); }
.main-nav li > a i { font-size: 12px; transition: transform 0.3s; color: #A0AEC0; }
.main-nav li:hover > a i, .main-nav li.active > a i { transform: rotate(180deg); color: var(--brand-accent); }

/* 下拉菜单 */
.dropdown { position: absolute; top: 64px; left: 0; min-width: 240px; background: #fff; border: 1px solid var(--border-color); border-top: 3px solid var(--brand-primary); border-radius: 0 0 var(--radius-md) var(--radius-md); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(15px) scale(0.95); transition: var(--transition); z-index: 100; }
.main-nav li:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.dropdown a { display: block; padding: 15px 25px; font-size: 14px; color: var(--text-body); border-bottom: 1px solid var(--border-color); transition: 0.3s; }
.dropdown a:hover { background: var(--brand-primary-light); color: var(--brand-primary); padding-left: 35px; border-left: 3px solid var(--brand-primary); }

.mobile-login-btn { display: none; }
.submenu-toggle { display: none; }
.menu-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 9998; opacity: 0; transition: var(--transition); }
.menu-overlay.active { display: block; opacity: 1; }


/* =========================================================
   5. 横幅 Banner 区域 (.banner-section)
========================================================= */
.banner-section { padding: 30px 50px 0; }
.banner-container { width: 100%; height: 500px; border-radius: var(--radius-lg) var(--radius-lg) 0 0; overflow: hidden; position: relative; box-shadow: var(--shadow-md); background: #000; }
.banner-swiper { width: 100%; height: 100%; }
.banner-slide { background-size: cover; background-position: center; width: 100%; height: 100%; backface-visibility: hidden; -webkit-backface-visibility: hidden; transform: translate3d(0, 0, 0);}

.banner-overlay { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; padding: 0 100px; }
.banner-overlay h2 { font-size: 46px; font-weight: 900; text-transform: uppercase; color: #fff; margin-bottom: 20px; line-height: 1.1; letter-spacing: -1px; transform: translateY(30px); opacity: 0; transition: 1s 0.2s; }
.banner-overlay h2 span { color: var(--brand-accent); }
.banner-overlay p { font-size: 18px; color: #E2E8F0; max-width: 600px; line-height: 1.6; border-left: 4px solid var(--brand-accent); padding-left: 15px; transform: translateY(30px); opacity: 0; transition: 1s 0.4s; }
.swiper-slide-active .banner-overlay h2, .swiper-slide-active .banner-overlay p { transform: translateY(0); opacity: 1; }

.b-btn { position: absolute; top: 50%; transform: translateY(-50%); z-index: 10; width: 50px; height: 50px; background: rgba(255,255,255,0.9); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--brand-primary); font-size: 20px; cursor: pointer; transition: var(--transition); box-shadow: var(--shadow-md); }
.b-btn:hover { background: var(--brand-accent); color: #fff; transform: translateY(-50%) scale(1.1); }
.b-prev { left: 30px; }
.b-next { right: 30px; }


/* =========================================================
   6. 数据监测条 (.dashboard-bar)
========================================================= */
.dashboard-bar { background: var(--bg-surface); margin: 0 50px 40px; border-radius: 0 0 var(--radius-md) var(--radius-md); display: grid; grid-template-columns: repeat(4, 1fr); box-shadow: var(--shadow-md); position: relative; z-index: 20; border: 1px solid var(--border-color); border-top: none; }
.dash-item { padding: 15px 20px; text-align: center; border-right: 1px solid var(--border-color); position: relative; overflow: hidden; transition: var(--transition); background: #fff; }
.dash-item:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); z-index: 2; border-radius: var(--radius-md); }
.dash-item::after { content:''; position: absolute; bottom:0; left:50%; width: 0; height: 4px; background: var(--brand-accent); transition: var(--transition); transform: translateX(-50%); }
.dash-item:hover::after { width: 100%; }
.dash-num { font-size: 36px; font-weight: 900; color: var(--brand-primary); transition: var(--transition); }
.dash-item:hover .dash-num { color: var(--brand-accent); text-shadow: var(--shadow-glow); }
.dash-label { font-size: 14px; font-weight: 700; color: var(--text-body); margin-top: 5px; text-transform: uppercase; }


/* =========================================================
   7. 通用区块标题 (.section-header)
========================================================= */
.section-wrapper { padding: 10px 50px 30px; }
.section-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 40px; border-bottom: 2px solid var(--border-color); padding-bottom: 15px; }
.section-title { display: flex; align-items: center; gap: 15px; }
.section-title .line { width: 8px; height: 30px; background: var(--brand-primary); border-radius: 4px; position: relative; }
.section-title .line::after { content:''; position: absolute; top: -5px; right: -8px; width: 8px; height: 8px; background: var(--brand-accent); border-radius: 50%; box-shadow: var(--shadow-glow); }
.section-title h2 { font-size: 28px; font-weight: 900; color: var(--text-heading); text-transform: uppercase;}
.section-title span { font-size: 14px; color: var(--text-muted); font-weight: 600; letter-spacing: 1px; margin-top: 8px; }

.swiper-controls { display: flex; gap: 10px; }
.swiper-btn { width: 40px; height: 40px; background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: var(--transition); color: var(--text-body); box-shadow: var(--shadow-sm); }
.swiper-btn:hover { background: var(--brand-primary); color: #fff; border-color: var(--brand-primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }


/* =========================================================
   8. 核心产品卡片矩阵 (.product-card)
========================================================= */
.product-swiper{margin-top:-20px}
.product-swiper .swiper-wrapper{align-items:stretch}
.product-swiper .swiper-slide{height:auto}
.product-page-slide{height:auto}
.product-page-grid{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:18px;
    width:100%;
}
.product-page-grid > div{min-width:0;height:auto}
.product-card{position:relative;padding:30px 20px;display:flex;flex:1;flex-direction:column;align-items:center;text-align:center;background:0 0;z-index:1;cursor:pointer;transition:transform .4s cubic-bezier(.16, 1, .3, 1),box-shadow .4s;clip-path:var(--clip-mech);overflow:hidden;min-width:0}
.product-card::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:var(--border-color);z-index:-2;transition:background .3s}
.product-card::after{content:'';position:absolute;inset:2px;background:var(--bg-surface);clip-path:var(--clip-mech);z-index:-1;transition:var(--transition)}
.product-card .shine{position:absolute;top:0;left:-100%;width:50%;height:100%;background:linear-gradient(to right,rgba(255,255,255,0) 0,rgba(255,102,0,.15) 50%,rgba(255,255,255,0) 100%);transform:skewX(-25deg);z-index:2;transition:left 0s;pointer-events:none}
.product-card:hover{transform:translateY(-12px);filter:drop-shadow(0 15px 20px rgba(0,64,128,.15))}
.product-card:hover .shine{left:200%;transition:left .8s ease-in-out}
.product-card:hover::before{background:conic-gradient(transparent,var(--brand-accent) 10%,transparent 30%);animation:rotate-border 2.5s linear infinite}
@keyframes rotate-border{100%{transform:rotate(360deg)}
}
.product-card .img-box{
    flex:0 0 auto;
    width:100%;
    aspect-ratio:5 / 5;
    background:#eff3f8;
    display:flex;
    align-items:center;
    justify-content:center;
    overflow:hidden;
    margin-bottom:25px;
    mix-blend-mode:multiply;
    transition:var(--transition)
}
.product-card .img-box img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.16, 1, .3, 1)}
.product-card:hover .img-box{background:#e6edf5}
.product-card:hover .img-box img{transform:scale(1.15) translateY(-5px)}
.pc-tags-row{width:100%;margin-top:auto;margin-bottom:12px;overflow:hidden;display:flex;justify-content:center}
.pc-tags-inner{display:flex;flex-wrap:nowrap;gap:8px;width:max-content}
.pc-tag{flex-shrink:0;white-space:nowrap;background:var(--bg-surface);color:var(--brand-accent);padding:5px 20px;font-size:15px;font-weight:700;border:1px solid rgba(255,102,0,.2);clip-path:var(--clip-mech);transition:var(--transition)}
.product-card:hover .pc-tag{background:var(--brand-accent);color:#fff}
.pc-tags-inner.scroll-active{animation:tag-ping-pong 4s ease-in-out infinite alternate}
.product-card:hover .pc-tags-inner.scroll-active{animation-play-state:paused}
@keyframes tag-ping-pong{0%,15%{transform:translateX(0)}
100%,85%{transform:translateX(var(--max-scroll))}
}

/* =========================================================
   9. 企业简介与优势卡片 (.company-grid & .adv-grid)
========================================================= */
.company-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; background: var(--bg-surface); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); border: 1px solid var(--border-color); }
.c-image { position: relative; }
.c-image img { width: 100%; height: 100%; object-fit: cover; }
.c-content { padding: 30px 50px; display: flex; flex-direction: column; justify-content: center; }
.c-content h3 { font-size: 28px; font-weight: 900; color: var(--text-heading); margin-bottom: 25px; line-height: 1.4; }
.c-content h3 span { color: var(--brand-primary); }
.c-content p { font-size: 15px; color: var(--text-body); margin-bottom: 20px; line-height: 1.8; }
.c-btn { display: inline-flex; align-items: center; gap: 8px; align-self: flex-start; margin-top: 15px; background: #fff; border: 2px solid var(--brand-primary); color: var(--brand-primary); padding: 12px 30px; border-radius: 30px; font-weight: bold; cursor: pointer; transition: var(--transition); text-decoration: none; }
.c-btn:hover { background: var(--brand-primary); color: #fff; box-shadow: var(--shadow-md); transform: translateY(-2px); }
.c-image { position: relative; display: block; overflow: hidden; }
.c-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.c-image:hover img { transform: scale(1.05); }
.play-btn-overlay { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 65px; height: 65px; background: var(--brand-primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 22px; cursor: pointer; z-index: 10; box-shadow: 0 0 0 rgba(0, 64, 128, 0.6); animation: pulse-play 1s infinite; transition: var(--transition); }
.play-btn-overlay i { margin-left: 4px;}
.play-btn-overlay:hover { background: var(--brand-accent); animation: none; transform: translate(-50%, -50%) scale(1.1); box-shadow: var(--shadow-glow); }
@keyframes pulse-play {
    0% { box-shadow: 0 0 0 0 rgba(0, 64, 128, 0.7); }
    70% { box-shadow: 0 0 0 20px rgba(0, 64, 128, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 64, 128, 0); }
}
.video-overlay { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.85); z-index: 20000; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: var(--transition); backdrop-filter: blur(5px); }
.video-overlay.active { opacity: 1; visibility: visible; }
.video-container { width: 900px; max-width: 95%; background: #000; position: relative; border-radius: var(--radius-md); box-shadow: var(--shadow-lg); transform: translateY(30px) scale(0.95); transition: all 0.4s; aspect-ratio: 16/9; }
.video-overlay.active .video-container { transform: translateY(0) scale(1); }
.video-close { position: absolute; top: -40px; right: 0; background: none; border: none; font-size: 28px; color: #fff; cursor: pointer; transition: var(--transition); }
.video-close:hover { color: var(--brand-accent); transform: rotate(90deg); }
.video-wrapper { width: 100%; height: 100%; }
.video-wrapper video, .video-wrapper iframe { width: 100%; height: 100%; border-radius: var(--radius-md); outline: none; object-fit: cover; }

.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:40px;padding-bottom:15px}
.adv-card{background:var(--bg-surface);padding:30px;border-radius:var(--radius-md);border:1px solid var(--border-color);transition:var(--transition);border-bottom-color: var(--border-color)!important;border-bottom:3px solid transparent;display:flex;flex-direction:column; cursor: pointer;}
.adv-card.active,.adv-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-bottom-color:var(--brand-accent)!important}
.adv-icon{width:50px;height:50px;background:var(--brand-primary-light);color:var(--brand-primary);display:flex;align-items:center;justify-content:center;border-radius:12px;font-size:22px;margin-bottom:20px;transition:var(--transition)}
.adv-card.active .adv-icon,.adv-card:hover .adv-icon{background:var(--brand-primary);color:#fff;transform:rotate(10deg)}
.adv-card h4 { font-size: 18px; font-weight: 800; color: var(--text-heading); margin-bottom: 10px; }


/* =========================================================
   10. 网络地图与表单 (.network-wrap)
========================================================= */
.network-wrap { display: flex; gap: 30px; align-items: stretch; margin-bottom: 60px; }

/* 地图容器 */
.map-box { flex: 1; background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-lg); display: flex; flex-direction: column; overflow: hidden; box-shadow: var(--shadow-sm); position: relative; transition: var(--transition); }
.map-box:hover { box-shadow: var(--shadow-md); border-color: #cbd5e1; }
.m-header { background: var(--bg-surface); padding: 20px 25px; font-size: 17px; font-weight: 600; border-bottom: 1px solid var(--border-color); display: flex; align-items: center; gap: 10px; color: var(--text-heading); }
.m-header i { color: var(--brand-primary); }
.m-body { flex: 1; background: radial-gradient(circle at center, #E6F0FA 0%, #F4F7F9 100%); position: relative; min-height: 450px; overflow: hidden; }
.m-text { position: absolute; bottom: 30px; left: 30px; background: rgba(255,255,255,0.95); padding: 15px 25px; border-radius: var(--radius-md); box-shadow: var(--shadow-md); border-left: 4px solid var(--brand-accent); font-size: 20px; font-weight: 900; color: var(--brand-primary); letter-spacing: .1px; text-transform: uppercase; z-index: 10; backdrop-filter: blur(5px); }

/* 表单容器 */
.form-box { flex: 1.2; background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-lg); display: flex; flex-direction: column; overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); }
.form-box:hover { box-shadow: var(--shadow-md); }
.form-box .m-header { border-top: 4px solid var(--brand-accent); }
.form-content { display: flex; flex: 1; flex-direction: row; }

.f-inputs { flex: 1; padding: 30px; display: flex; flex-direction: column; gap: 25px; }
.f-group { position: relative; }
.f-group input, .f-group textarea { width: 100%; background: var(--bg-body); border: 1px solid var(--border-color); padding: 15px 20px; font-size: 14px; outline: none; transition: var(--transition); clip-path: var(--clip-arrow); color: var(--text-heading); }
.f-group textarea { height: 90px; resize: none; }
.f-group label { position: absolute; left: 20px; top: 15px; color: var(--text-muted); font-size: 14px; pointer-events: none; transition: var(--transition); font-weight: 600; }
.f-group input:focus, .f-group textarea:focus { border-color: var(--brand-accent); background: #fff; box-shadow: inset 0 0 0 1px var(--brand-accent); }
.f-group input:focus ~ label, .f-group input:valid ~ label, .f-group textarea:focus ~ label, .f-group textarea:valid ~ label { transform: translateY(-26px) scale(0.85); left: 10px; color: var(--brand-accent); background: #fff; padding: 0 8px; font-weight: 800; z-index: 2; }

.f-submit { background: var(--brand-accent); color: #fff; border: none; padding: 16px; border-radius: 4px; font-size: 16px; font-weight: 900; letter-spacing: 2px; cursor: pointer; transition: var(--transition); margin-top: 5px; clip-path: var(--clip-mech); position: relative; overflow: hidden; }
.f-submit::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent); transition: 0.5s; }
.f-submit:hover { background: var(--brand-accent-hover); box-shadow: var(--shadow-glow); transform: translateY(-3px); }
.f-submit:hover::before { left: 100%; }

.f-contact { width: 240px; background: var(--bg-body); border-left: 1px solid var(--border-color); padding: 30px 20px; display: flex; flex-direction: column; justify-content: center; }
.c-row { display: flex; gap: 15px; margin-bottom: 15px; }
.c-row i { color: #fff; background: var(--brand-primary); width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; box-shadow: var(--shadow-sm); transition: 0.3s; }
.c-row:hover i { transform: scale(1.1) rotate(10deg); background: var(--brand-accent); }
.c-info strong { display: block; font-size: 14px; color: var(--text-heading); margin-bottom: 2px; }
.c-info span { font-size: 13px; color: var(--text-muted); }


/* =========================================================
   11. 常见问题解答 FAQ (.faq-container)
========================================================= */
.faq-container { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; width: 100%; }
.faq-item { background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%); border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; box-shadow: 0 2px 4px rgba(0,0,0,0.02); }
.faq-item:hover { border-color: #cbd5e1; box-shadow: var(--shadow-sm); }
.faq-item.active { border-color: var(--brand-accent); box-shadow: 0 4px 12px rgba(255,102,0,0.1); background: #fff; }

.faq-question { padding: 20px 25px; display: flex; align-items: center; cursor: pointer; font-size: 15px; font-weight: 600; color: var(--text-heading); transition: var(--transition); gap: 15px; }
.faq-icon-box { width: 32px; height: 32px; background: var(--brand-primary-light); color: var(--brand-primary); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; transition: var(--transition); }
.faq-item.active .faq-icon-box { background: var(--brand-accent); color: #fff; }

.faq-question-text { flex: 1; line-height: 1.4; }
.faq-arrow { color: var(--text-muted); transition: transform 0.3s; font-size: 13px; }
.faq-item.active .faq-arrow { transform: rotate(180deg); color: var(--brand-accent); }

.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease-out; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer-inner { padding: 0 25px 25px 72px; color: var(--text-body); font-size: 14px; line-height: 1.7; }


/* =========================================================
   12. 底部服务特性 (.bottom-features)
========================================================= */
.bottom-features { display: flex; background: var(--bg-surface); border-top: 2px solid var(--brand-accent); border-bottom: 1px solid var(--border-color); margin-top: 60px; box-shadow: var(--shadow-sm); border-radius: 4px; overflow: hidden; }
.feature-box { flex: 1; text-align: center; padding: 35px 20px; border-right: 1px solid var(--border-color); cursor: pointer; transition: var(--transition); position: relative; text-decoration: none; color: inherit; }
.feature-box:last-child { border-right: none; }
.feature-box i { font-size: 32px; color: var(--text-body); margin-bottom: 15px; display: block; transition: var(--transition); }
.feature-box span { font-size: 16px; font-weight: bold; color: var(--text-heading); transition: var(--transition); }

.feature-box::before { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 0; height: 3px; background: var(--brand-accent); transition: var(--transition); }
.feature-box:hover { background: var(--brand-primary-light); }
.feature-box:hover i { color: var(--brand-accent); transform: translateY(-5px); }
.feature-box:hover span { color: var(--brand-primary); }
.feature-box:hover::before { width: 100%; }


/* =========================================================
   13. 底部页脚区域 (.main-footer)
========================================================= */
.main-footer { background: var(--bg-footer); padding: 40px 50px 30px; color: #94A3B8; border-top: 4px solid var(--brand-primary); position: relative; }
.main-footer::before { content:''; position: absolute; top:0; left:50%; transform:translateX(-50%); width: 80%; height: 200px; background: radial-gradient(ellipse, rgba(0,64,128,0.2) 0%, transparent 70%); pointer-events: none; }

.footer-grid { display: grid; grid-template-columns: 2fr 1.2fr 1.2fr 1fr; gap: 50px; margin-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 35px; }
.ft-brand { display: block; margin-bottom: 20px; }
.ft-brand img { max-height: 100px; width: auto; } /* 控制底部Logo高度，可自行调整 */

.ft-info li { display: flex; gap: 12px; margin-bottom: 12px; font-size: 14px; align-items: flex-start; }
.ft-info i { color: var(--brand-accent); margin-top: 4px; font-size: 16px; }
.ft-info strong { color: #fff; margin-right: 5px; font-weight: 600; }
.ft-info div { color: #94A3B8; word-break: break-all; } /* 防止邮箱过长换行难看 */

.ft-title { color: #fff; font-size: 16px; font-weight: bold; margin-bottom: 25px; text-transform: uppercase; letter-spacing: 1px; }
.ft-links li { margin-bottom: 12px; }
.ft-links a { font-size: 14px; transition: var(--transition); display: flex; align-items: center; gap: 8px; }
.ft-links a::before { content: '›'; color: var(--brand-primary); font-size: 18px; font-weight: bold; }
.ft-links a:hover { color: #fff; transform: translateX(5px); }

.ft-qr { display: flex; gap: 15px; }
.qr-box img { width: 150px; height: 150px; background: #fff; padding: 5px; border-radius: var(--radius-md); margin-bottom: 8px; }

.footer-bottom { display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.ft-social { display: flex; gap: 15px; font-size: 18px; }
.ft-social i { cursor: pointer; transition: var(--transition); color: #94A3B8; }
.ft-social i:hover { color: #fff; transform: translateY(-3px); }


/* =========================================================
   14. 登录与注册弹窗 (.auth-overlay)
========================================================= */
.auth-overlay { position: fixed; inset: 0; background: rgba(10, 25, 47, 0.85); backdrop-filter: blur(8px); z-index: 20000; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: var(--transition); }
.auth-overlay.active { opacity: 1; visibility: visible; }
.auth-container { display: flex; width: 950px; max-width: 95%; height: 580px; background: #fff; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); border-radius: var(--radius-lg); position: relative; transform: translateY(30px) scale(0.95); transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1); overflow: hidden; }
.auth-overlay.active .auth-container { transform: translateY(0) scale(1); }

.auth-close { position: absolute; top: 20px; right: 25px; background: none; border: none; font-size: 24px; color: #999; cursor: pointer; z-index: 10; transition: var(--transition); }
.auth-close:hover { color: var(--brand-accent); transform: rotate(90deg); }

.auth-left { width: 40%; position: relative; background: #000; }
.auth-left img { width: 100%; height: 100%; object-fit: cover; opacity: 0.7; }
.auth-left::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(0,64,128,0.7) 0%, transparent 100%); }

.auth-right { width: 60%; padding: 40px 20px; display: flex; flex-direction: column; position: relative; }
.auth-tabs { display: flex; justify-content: center; gap: 40px; margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; }
.auth-tabs span { font-size: 18px; font-weight: bold; color: var(--text-muted); cursor: pointer; position: relative; transition: var(--transition); }
.auth-tabs span.active { color: var(--brand-accent); }
.auth-tabs span::after { content:''; position: absolute; bottom: -17px; left: 50%; transform: translateX(-50%); width: 0; height: 3px; background: var(--brand-accent); transition: var(--transition); }
.auth-tabs span.active::after { width: 100%; }

.auth-form-content { flex: 1; overflow-y: auto; padding-right: 10px; }
.auth-form-content::-webkit-scrollbar { width: 4px; }
.auth-form-view { display: none; flex-direction: column; gap: 15px; animation: fadeIn 0.4s; }
.auth-form-view.active { display: flex; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.auth-input-group { display: flex; align-items: center; background: #F8FAFC; border: 1px solid transparent; border-radius: 30px; padding: 5px 20px; transition: var(--transition); }
.auth-input-group:focus-within { border-color: var(--brand-primary); background: #fff; box-shadow: 0 0 0 3px var(--brand-primary-light); }
.auth-input-group label { width: 145px; font-size: 14px; font-weight: bold; color: var(--text-body); flex-shrink: 0; display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.auth-input-group label i { font-size: 16px; color: var(--text-muted); width: 20px; text-align: center; transition: var(--transition); }
.auth-input-group:focus-within label i { color: var(--brand-primary); }
.auth-input-group input { flex: 1; border: none; background: transparent; padding: 12px 10px; font-size: 14px; outline: none; color: var(--text-heading); }

.auth-options { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-body); margin: 5px 0 15px; padding: 0 10px; }
.auth-options a { color: var(--brand-primary); font-weight: bold; }
.auth-options a:hover { color: var(--brand-accent); text-decoration: underline; }

.auth-btn { width: 100%; background: var(--brand-primary); color: #fff; border: none; padding: 14px; border-radius: 30px; font-size: 16px; font-weight: bold; letter-spacing: 2px; cursor: pointer; transition: var(--transition); box-shadow: var(--shadow-sm); margin-top: 10px; }
.auth-btn:hover { background: var(--brand-accent); box-shadow: 0 6px 20px rgba(255, 102, 0, 0.3); transform: translateY(-2px); }

.auth-input-group input{min-width:0;flex:1}
.quote-captcha-group input{min-width:0}
.auth-input-group.captcha-group{padding-right:5px}
.auth-input-group>.pboot-captcha{height:38px;width:100px;object-fit:fill;border-radius:25px;cursor:pointer;border:1px solid var(--border-color);box-shadow:var(--shadow-sm);transition:var(--transition);flex-shrink:0;margin-left:10px}
.auth-input-group>.pboot-captcha:hover{border-color:var(--brand-accent);transform:translateY(-2px);box-shadow:0 4px 12px rgba(255,102,0,.2)}

/* =========================================================
   右侧现代化悬浮操作栏 (.float-bar)
========================================================= */
.float-bar { position: fixed; right: 20px; top: 50%; transform: translateY(-50%); z-index: 9990; display: flex; flex-direction: column; align-items: center; gap: 15px; transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55); }

/* 主体胶囊区域 */
.float-inner { background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); border: 1px solid var(--border-color); border-radius: 40px; padding: 15px 10px; box-shadow: var(--shadow-lg); display: flex; flex-direction: column; align-items: center; gap: 12px; transition: var(--transition); }

.f-divider { width: 60%; height: 1px; background: var(--border-color); margin: 2px 0; }

/* 按钮基础样式 */
.f-btn { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; color: #64748B; cursor: pointer; position: relative; transition: var(--transition); background: transparent; }
.f-btn i { transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); }

/* 悬浮品牌色效 */
.f-btn.action-btn { background: #fff; color: #7A8AA0; border-color: #D7E2EE; }
.f-btn.action-btn:hover { background: var(--brand-primary-light); color: var(--brand-primary); border-color: #C8D7EA; }
.f-btn.social-btn { background: #EFF6FF; color: var(--brand-primary); border-color: #CFE0F5; }
.f-btn.wa-btn { background: #ECFDF3; color: #07C160; border-color: #C7F0D8; }
.f-btn.email-btn { background: #EFF6FF; color: #0B5AA0; border-color: #CFE0F5; }
.f-btn.wechat-btn { background: #F0FDF4; color: #07C160; border-color: #C7F0D8; }
.f-btn.phone-btn { background: #FFF4EC; color: var(--brand-accent); border-color: #FFD7BF; }
.f-btn.qq-btn:hover { background: #E1F5FE; color: #12B7F5; }
.f-btn.wechat-btn:hover { background: #E8F5E9; color: #07C160; }
.f-btn.phone-btn:hover { background: rgba(255,102,0,0.1); color: var(--brand-accent); }
.f-btn:hover i { transform: scale(1.15); }

/* 左侧弹出提示框 (Tooltip) */
.f-tooltip { position: absolute; right: 65px; top: 50%; transform: translateY(-50%) translateX(15px); background: var(--brand-primary); color: #fff; padding: 10px 18px; border-radius: 8px; font-size: 14px; font-weight: bold; white-space: nowrap; opacity: 0; visibility: hidden; transition: all 0.3s; box-shadow: var(--shadow-md); pointer-events: none; }
.f-tooltip::after { content: ''; position: absolute; right: -6px; top: 50%; transform: translateY(-50%); border-width: 6px 0 6px 6px; border-style: solid; border-color: transparent transparent transparent var(--brand-primary); }
.f-btn:hover .f-tooltip { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }

/* 专属二维码与电话样式 */
.qr-tooltip { padding: 15px; display: flex; flex-direction: column; align-items: center; gap: 10px; background: #fff; color: var(--text-heading); border: 1px solid var(--border-color); }
.qr-tooltip::after { border-color: transparent transparent transparent #fff; }
.qr-tooltip img { width: 100px; height: 100px; }
.qr-tooltip span { font-size: 12px; color: var(--text-muted); }

.ft-social { display: flex; gap: 15px; font-size: 18px; align-items: center; }
.ft-social i { cursor: pointer; transition: var(--transition); color: #94A3B8; }
.ft-social i:hover { color: #fff; transform: translateY(-3px); }
.ft-social a { position: relative; display: inline-flex; align-items: center; justify-content: center; }
.ft-social a:hover { color: #fff; }
.ft-social-wechat .ft-wechat-popup {
    position: absolute;
    right: 0;
    bottom: calc(100% + 14px);
    width: 180px;
    padding: 12px;
    border-radius: 14px;
    background: #fff;
    border: 1px solid #DCE7F4;
    box-shadow: 0 18px 35px rgba(0, 64, 128, 0.18);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px) scale(.96);
    transition: var(--transition);
    pointer-events: none;
    z-index: 20;
}
.ft-social-wechat .ft-wechat-popup::after {
    content: '';
    position: absolute;
    right: 22px;
    bottom: -7px;
    width: 14px;
    height: 14px;
    background: #fff;
    border-right: 1px solid #DCE7F4;
    border-bottom: 1px solid #DCE7F4;
    transform: rotate(45deg);
}
.ft-social-wechat:hover .ft-wechat-popup,
.ft-social-wechat.active .ft-wechat-popup {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}
.ft-social-wechat .ft-wechat-popup img { width: 120px; height: 120px; object-fit: cover; border-radius: 8px; }
.ft-social-wechat .ft-wechat-popup strong { color: var(--text-heading); font-size: 13px; line-height: 1.4; text-align: center; word-break: break-word; }
.ft-social-wechat .ft-wechat-popup small { color: var(--text-muted); font-size: 12px; }

.phone-tooltip { display: flex; flex-direction: column; background: var(--brand-accent); }
.phone-tooltip::after { border-color: transparent transparent transparent var(--brand-accent); }
.phone-tooltip strong { font-size: 12px; opacity: 0.8; letter-spacing: 1px; }
.phone-tooltip span { font-size: 18px; font-weight: 900; }

/* 收起/展开控制按钮 */
.f-toggle { width: 40px; height: 40px; border-radius: 50%; background: var(--bg-surface); border: 1px solid var(--border-color); color: #A0AEC0; display: flex; align-items: center; justify-content: center; font-size: 16px; cursor: pointer; box-shadow: var(--shadow-sm); transition: var(--transition); }
.f-toggle:hover { color: var(--brand-accent); transform: rotate(90deg); border-color: var(--brand-accent); }

/* 隐藏状态 (JS 触发) */
.float-bar.collapsed { transform: translateY(-50%) translateX(calc(100% + 20px)); }
.float-bar.collapsed .f-toggle { transform: translateX(-60px); background: var(--brand-primary); color: #fff; border-color: var(--brand-primary); box-shadow: var(--shadow-md); }
.float-bar.collapsed .f-toggle:hover { background: var(--brand-accent); border-color: var(--brand-accent); }

/* =========================================================
   客户留言弹窗 (Get Free Quote Modal)
========================================================= */
.quote-overlay { position: fixed; inset: 0; background: rgba(10, 25, 47, 0.85); z-index: 20000; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: var(--transition); backdrop-filter: blur(5px); }
.quote-overlay.active { opacity: 1; visibility: visible; }

.quote-container { background: #ffffff; width: 850px; max-width: 95%; padding: 40px 50px; border-radius: 4px; position: relative; transform: translateY(30px) scale(0.95); transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1); box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); }
.quote-overlay.active .quote-container { transform: translateY(0) scale(1); }

.quote-close { position: absolute; top: 15px; right: 15px; background: none; border: 1px dashed #A0AEC0; width: 30px; height: 30px; border-radius: 4px; color: #64748B; cursor: pointer; transition: var(--transition); display: flex; align-items: center; justify-content: center; }
.quote-close:hover { color: var(--brand-accent); border-color: var(--brand-accent); transform: rotate(90deg); }

.quote-header { text-align: center; margin-bottom: 30px; }
.quote-header h2 { font-size: 26px; color: #1A202C; font-weight: 800; margin-bottom: 8px; }
.quote-header p { color: #64748B; font-size: 15px; }

.quote-form { display: flex; flex-wrap: wrap; gap: 15px; align-items: flex-end; }
.quote-form .form-item { flex: 1; min-width: 180px; }
.quote-form .form-item.captcha { max-width: 280px; }
.quote-form .form-item.submit { flex: none; width: 160px; }

/* 表单输入框 */
.quote-form input, .quote-form textarea { width: 100%; background: #F1F5F9; border: 1px solid transparent; padding: 15px 20px; margin-bottom: 0; border-radius: 4px; font-size: 14px; outline: none; transition: var(--transition); color: #1A202C; font-family: inherit; }
.quote-form input::placeholder, .quote-form textarea::placeholder { color: #94A3B8; }

.quote-form input:focus, .quote-form textarea:focus { background: #fff; border-color: var(--brand-primary); box-shadow: 0 0 0 3px var(--brand-primary-light); }

.quote-captcha-group{display:flex;gap:10px;}
.quote-captcha-group input{margin-bottom:0!important;flex:1}
.quote-captcha-group .pboot-captcha{height:48px;width:120px;object-fit:cover;border-radius:4px;cursor:pointer;border:1px solid transparent;transition:var(--transition)}
.quote-captcha-group .pboot-captcha:hover{border-color:var(--brand-primary);box-shadow:var(--shadow-sm)}

.quote-submit { width: 100%; background: #1E3A8A; color: #fff; border: none; padding: 15px; border-radius: 4px; font-size: 16px; font-weight: bold; cursor: pointer; transition: var(--transition); letter-spacing: 1px; white-space: nowrap; }
.quote-submit:hover { background: var(--brand-accent); box-shadow: var(--shadow-glow); transform: translateY(-2px); }

/* 底部提示文字 */
.quote-footer { margin-top: 20px; font-size: 12px; color: #64748B; line-height: 1.8; text-align: center; }
.quote-footer a { color: #0284C7; text-decoration: none; font-weight: bold; }
.quote-footer a:hover { color: var(--brand-accent); text-decoration: underline; }

/* Global Search popup */
.global-search-overlay { position: fixed; inset: 0; background: rgba(10, 25, 47, 0.78); z-index: 20010; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: var(--transition); backdrop-filter: blur(4px); }
.global-search-overlay.active { opacity: 1; visibility: visible; }
.global-search-box { width: 640px; max-width: 94%; background: #fff; border-radius: 10px; padding: 30px 28px; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45); transform: translateY(24px) scale(0.96); transition: all 0.35s ease; position: relative; }
.global-search-overlay.active .global-search-box { transform: translateY(0) scale(1); }
.global-search-close { position: absolute; top: 12px; right: 12px; width: 32px; height: 32px; border: 1px dashed #A0AEC0; color: #64748B; background: #fff; border-radius: 6px; cursor: pointer; transition: var(--transition); }
.global-search-close:hover { color: var(--brand-accent); border-color: var(--brand-accent); transform: rotate(90deg); }
.global-search-box h4 { font-size: 24px; color: #1A202C; font-weight: 800; margin-bottom: 6px; }
.global-search-box p { color: #64748B; font-size: 14px; margin-bottom: 18px; }
.global-search-form { display: flex; gap: 10px; }
.global-search-form input { display: block; width: 100%; flex: 1; height: 48px; line-height: 48px; border: 1px solid #CBD5E1; border-radius: 6px; padding: 0 14px; font-size: 15px; outline: none; appearance: none; -webkit-appearance: none; background: #fff; }
.global-search-form input:focus { border-color: var(--brand-primary); box-shadow: 0 0 0 3px var(--brand-primary-light); }
.global-search-form button { height: 48px; border: none; border-radius: 6px; padding: 0 20px; background: var(--brand-primary); color: #fff; font-weight: 700; cursor: pointer; transition: var(--transition); white-space: nowrap; }
.global-search-form button:hover { background: var(--brand-accent); }

/* =========================================================
   响应式布局 Media Queries
========================================================= */
@media (max-width: 1600px) {
    .header-center h1 { white-space: nowrap; font-size: 22px;}
    .main-nav li > a{ font-size: 15px;}
}

@media (max-width: 1400px) {
    .header-center h1 { white-space: nowrap; font-size: 18px;}
    .logo-box { width: 260px; padding: 0 15px; clip-path: polygon(0 0, 100% 0, 240px 100%, 0% 100%); }
    .search-bar { width: 200px; }
    .header-right { padding-right: 20px; gap: 10px; }
    .contact-btn { padding: 0 15px; font-size: 13px; }
    .lang-current { padding: 0 10px; font-size: 13px; }
}

@media (max-width: 1200px) {
    .company-grid { grid-template-columns: 1fr; } 
    .c-image { height: 300px; } 
    .network-wrap { flex-direction: column; } 
    .footer-grid { grid-template-columns: 1fr 1fr; } 
    .auth-container { width: 800px; }
}

@media (max-width: 1150px) {
    .header-center { display: none; }
}

/* 平板与手机端结构巨变点 */
@media (max-width: 992px) {
    body { font-size: 14px; }
    .header { padding: 0 20px; } 
    .desktop-only { display: none !important; } 
    .mobile-menu-btn { display: block; } 
    .logo-box { width: auto; background: transparent; padding: 0; clip-path: none; } 
    .logo-desktop { display: none !important; }
    .logo-mobile { display: block !important; }
    
    .layout-wrapper { flex-direction: column; } 
    .sidebar { width: 100%; height: auto; position: static; border-right: none; border-bottom: 1px solid var(--border-color); display: block; }
    
    .az-grid { display: flex; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 10px; } 
    .az-grid span { flex-shrink: 0; width: 30px; } 
    .brand-list { display: flex; overflow-x: auto; white-space: nowrap; padding: 0; border-top: 1px solid var(--border-color); }
    .brand-list li { border-bottom: none; border-right: 1px dashed var(--border-color); padding: 14px 18px; font-size: 15px; } 
    .brand-list li::before { width: 100%; height: 3px; bottom: 0; top: auto; transform: scaleX(0); transform-origin: center; }
    
    .main-content { width: 100%; } 
    
    .mobile-tools-bar { display: flex; flex-direction: column; gap: 15px; padding: 20px; background: #F8FAFC;  border-bottom: 1px solid var(--border-color);}
    .m-search-box { display: flex; border: 1px solid var(--border-color); border-radius: 4px; overflow: hidden; background: #fff; }
    .m-search-box input { flex: 1; border: none; padding: 12px 15px; font-size: 14px; outline: none; color: var(--text-heading); }
    .m-search-box button { position: relative; background: var(--brand-accent); color: #fff; border: none; width: 52px; min-width: 52px; padding: 0 !important; font-size: 16px; line-height: 1; text-align: center; cursor: pointer; }
    .m-search-box button i { position: absolute; left: 50%; top: 50%; margin: 0 !important; line-height: 1; transform: translate(-50%, -50%); }
    
    /* 移动端语言切换 */
    .m-lang-box { position: relative; }
    .m-lang-current { display: flex; justify-content: space-between; align-items: center; background: #fff; border: 1px solid var(--border-color); padding: 12px 15px; border-radius: 4px; font-size: 14px; font-weight: bold; color: var(--text-heading); cursor: pointer; }
    .m-lang-current div { display: flex; align-items: center; gap: 8px; }
    .m-lang-current i { transition: transform 0.3s; color: var(--text-muted); }
    
    /* 语言下拉列表 (默认折叠) */
    .m-lang-dropdown { display: none; flex-direction: column; background: #fff; border: 1px solid var(--border-color); border-top: none; border-radius: 0 0 4px 4px; margin-top: -2px; }
    .m-lang-dropdown a { padding: 12px 15px; display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-body); border-bottom: 1px solid #F1F5F9; }
    .m-lang-dropdown a:last-child { border-bottom: none; }
    
    /* 语言下拉展开状态 */
    .m-lang-box.open .m-lang-dropdown { display: flex; }
    .m-lang-box.open .m-lang-current i { transform: rotate(180deg); color: var(--brand-accent); }
    
    .main-nav { position: fixed; align-items: flex-start; top: 0; right: -100%; width: 280px; height: 100vh; background: #ffffff; flex-direction: column; padding: 60px 0 30px; box-shadow: -5px 0 20px rgba(0,0,0,0.1); transition: 0.4s ease-in-out; overflow-y: auto; z-index: 9999; }
    .main-nav.open { right: 0; } 
    .main-nav li { width: 100%; }
    .main-nav li:not(:last-child)::after { display: none; } 
    .main-nav li > a { height: auto; padding: 15px 25px; font-size: 15px; } 
    .main-nav li.has-dropdown > a { padding-right: 52px; }
    .main-nav li > a::before { display: none; }
    .main-nav li.has-dropdown > a i { display: none; }
    .submenu-toggle { position: absolute; right: 16px; top: 10px; transform: none; width: 32px; height: 32px; border: none; background: transparent; color: #94A3B8; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 2; }
    .submenu-toggle i { transition: transform 0.25s ease, color 0.25s ease; }
    .main-nav li.active > .submenu-toggle i { transform: rotate(180deg); color: var(--brand-accent); }
    
    .mobile-login-btn { display: block; padding: 20px; background: #F8FAFC; border-top: 1px solid #E2E8F0; } 
    .mobile-login-btn button { width: 100%; background: var(--brand-accent); color: #fff; border: none; padding: 12px; border-radius: 4px; font-weight: bold; font-size: 16px; cursor: pointer; }
    
    .dropdown { position: static; visibility: visible; opacity: 1; transform: none; box-shadow: none; border: none; display: none; } 
    .main-nav li.active .dropdown { display: block; }
    
    .dashboard-bar { grid-template-columns: 1fr 1fr; border-top: none; margin: 0 20px 20px; } 
    .dash-item { border-bottom: 1px solid var(--border-color); } 
    
    .faq-container { grid-template-columns: 1fr; } 
    .adv-grid { grid-template-columns: 1fr; }
    .section-wrapper { padding: 24px 20px; } 
    .banner-section { padding: 20px 20px 0; } 
    .product-swiper { padding: 20px 6px 24px !important; margin-top: 0; }
    .adv-grid { margin-top: 20px; padding-bottom: 0; gap: 14px; }
    .network-wrap { margin-bottom: 20px; gap: 14px; }
    
    .bottom-features { flex-wrap: wrap; margin-top: 24px; } 
    .feature-box { flex: 0 0 50%; border-bottom: 1px solid var(--border-color); }
    
    .auth-container { flex-direction: column; height: 90vh; width: 90%; } 
    .auth-left { width: 100%; height: 120px; flex-shrink: 0; } 
    .auth-right { width: 100%; padding: 20px; flex: 1; }
    .main-content { padding-bottom: calc(86px + env(safe-area-inset-bottom)); }
    .inner-page .inner-content { padding-bottom: calc(86px + env(safe-area-inset-bottom)); }
}

/* 手机竖屏 */
@media (max-width: 768px) {
    body { font-size: 13px; }
    .header { height: 60px; } 
    .logo-box .brand img { height: 50px; }
    .banner-container { height: 280px; } 
    .banner-overlay { padding: 0 25px; } 
    .banner-overlay h2 { font-size: 18px; } 
    .banner-overlay p { font-size: 14px; line-height: 1.2;}
    .b-btn { display: none; }
    .dash-item { padding: 20px 10px; }
    .dash-num { font-size: 34px; line-height: 1; }
    .dash-label { font-size: 11px; line-height: 1.45; letter-spacing: 0; word-break: break-word; }
    .section-header { margin-bottom: 14px; padding-bottom: 8px; }
    .section-title h2 { font-size: 18px; }
    .section-title span { font-size: 12px; }
    .swiper-btn { width: 34px; height: 34px; font-size: 14px; }
    .feature-box i { font-size: 24px; margin-bottom: 10px; }
    .feature-box span { font-size: 14px; }
    .global-search-box { max-width: 96%; padding: 20px 16px 16px; border-radius: 8px; }
    .global-search-box h4 { font-size: 18px; margin-bottom: 4px; }
    .global-search-box p { font-size: 13px; margin-bottom: 12px; }
    .global-search-form input { height: 44px; line-height: 44px; font-size: 16px; }
    .global-search-form button { height: 44px; font-size: 16px; }

    .auth-input-group label { width: 120px; font-size: 13px; }
    .auth-input-group label i { width: 16px; font-size: 14px; }
    
    .ft-brand{ display: flex; justify-content: center; }
    .form-content { flex-direction: column; } 
    .f-contact { width: 100%; border-left: none; border-top: 1px solid var(--border-color); flex-direction: column; padding: 25px 20px; } 
    .footer-grid { grid-template-columns: 1fr; } 
    .footer-grid > div:nth-child(2),.footer-grid > div:nth-child(3),.footer-grid > div:nth-child(4) { display: none;}
    
    .float-bar { display: none; }
    .auth-input-group > .pboot-captcha, .quote-captcha-group .pboot-captcha { width: 90px; }
    .quote-container { padding: 30px 20px; }
    .quote-captcha-group .pboot-captcha { width: 100px; }

   .m-body { min-height: 180px; }
   .m-text { bottom: 15px; left: 15px; padding: 10px 15px; font-size: 14px; }

    .footer-bottom{ flex-direction: column-reverse; gap: 8px; text-align: center;}
}

/* ================= 移动端底部导航栏 ================= */
@media (max-width: 420px) {
    .dash-num { font-size: 30px; }
    .dash-label { font-size: 10px; }
    .section-title h2 { font-size: 16px; }
}

.mobile-bottom-nav{display:none}
@media (max-width:992px){
    .mobile-bottom-nav{display:flex;position:fixed;bottom:0;left:0;width:100%;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);box-shadow:0 -5px 20px rgba(10,15,24,.08);z-index:1001;padding-bottom:env(safe-area-inset-bottom)}
    .mobile-bottom-nav .nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:12px 0 8px;color:var(--text-muted);text-decoration:none;position:relative;transition:all .3s}
    .mobile-bottom-nav .nav-item i{font-size:20px;margin-bottom:4px;transition:transform .4s var(--ease-bounce),color .3s}
    .mobile-bottom-nav .nav-item span{font-size:11px;font-weight:600;text-transform:uppercase;font-family:'Roboto Condensed',sans-serif}
    .mobile-bottom-nav .nav-item::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:0;height:3px;background:var(--brand-accent);border-radius:0 0 4px 4px;transition:width .3s ease;box-shadow:var(--shadow-md)}
    .mobile-bottom-nav .nav-item.active,.mobile-bottom-nav .nav-item:hover{color:var(--brand-primary)}
    .mobile-bottom-nav .nav-item.active i,.mobile-bottom-nav .nav-item:hover i{transform:translateY(-4px);color:var(--brand-primary)}
    .mobile-bottom-nav .nav-item.active::before,.mobile-bottom-nav .nav-item:hover::before{width:35px}
    .mobile-bottom-nav .nav-item.call-btn{color:var(--brand-primary)}
    .mobile-bottom-nav .nav-item.call-btn::before{display:none}
    .mobile-bottom-nav .nav-item.call-btn .icon-wrapper{width:50px;height:50px;background:var(--brand-accent);border-radius:50%;display:flex;justify-content:center;align-items:center;margin-top:-30px;margin-bottom:6px;box-shadow:var(--shadow-lg);border:4px solid #fff;transition:transform .4s var(--ease-bounce)}
    .mobile-bottom-nav .nav-item.call-btn i{margin:0;color:#fff;font-size:20px;transform:none!important}
    .mobile-bottom-nav .nav-item.call-btn:hover .icon-wrapper{transform:translateY(-5px) scale(1.05);box-shadow:var(--shadow-glow)}
    .side-float-buttons{display:none!important}
    .back-to-top{bottom:90px!important}
}