/* =========================================================
   YFXERP 数字化软件科技企业官网 - 全局设计系统
   风格：画本清新风（纯白 + 浅蓝 + 浅绿）· 波浪动态渐变
   作者：豆包 · 版本 V1.0
   ---------------------------------------------------------
   目录
   01. 变量与重置
   02. 排版与通用工具
   03. 波浪渐变背景体系
   04. 按钮 / 徽章 / 标签
   05. 顶部导航
   06. 移动端菜单
   07. 页脚
   08. 通用组件（卡片/特性/标题/面包屑/分页/表单/手风琴/标签页/时间线/价格/轮播）
   09. 滚动动画
   10. 返回顶部 / 预加载
   ========================================================= */

/* ============ 01. 变量与重置 ============ */
:root{
  --c-primary:#2F7CF6;          /* 主蓝 */
  --c-primary-deep:#1E5FD8;     /* 深蓝 */
  --c-primary-soft:#E8F2FE;     /* 浅蓝 */
  --c-primary-mist:#F3F8FF;     /* 蓝雾 */
  --c-green:#2EBF8B;            /* 主绿 */
  --c-green-deep:#1FA371;       /* 深绿 */
  --c-green-soft:#E4F7EF;       /* 浅绿 */
  --c-green-mist:#F0FBF6;       /* 绿雾 */
  --c-ink:#152A3F;              /* 标题深蓝灰 */
  --c-body:#53677E;             /* 正文 */
  --c-muted:#8CA0B5;            /* 弱化文字 */
  --c-line:#E3EDF7;             /* 分隔线 */
  --c-bg:#F6FAFE;               /* 页面浅底 */
  --c-white:#FFFFFF;
  --shadow-sm:0 6px 18px rgba(47,124,246,.08);
  --shadow-md:0 14px 40px rgba(47,124,246,.12);
  --shadow-lg:0 24px 70px rgba(21,42,63,.14);
  --radius:18px;
  --radius-lg:26px;
  --radius-sm:10px;
  --container:1200px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  --transition:.35s cubic-bezier(.4,0,.2,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  color:var(--c-body);
  background:var(--c-white);
  line-height:1.75;
  font-size:15px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none;border:none}
button{cursor:pointer;background:none}
h1,h2,h3,h4,h5,h6{color:var(--c-ink);line-height:1.3;font-weight:700;letter-spacing:.2px}
::selection{background:var(--c-primary);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#f0f5fa}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#7fb2f8,#6fd3ac);border-radius:8px}

/* ============ 02. 排版与通用工具 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.container-wide{width:100%;max-width:1400px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section-sm{padding:64px 0;position:relative}
.section-tight{padding:44px 0;position:relative}
.text-center{text-align:center}
.text-left{text-align:left}
.mt-10{margin-top:10px}.mt-20{margin-top:20px}.mt-30{margin-top:30px}.mt-40{margin-top:40px}.mt-60{margin-top:60px}
.mb-10{margin-bottom:10px}.mb-20{margin-bottom:20px}.mb-30{margin-bottom:30px}.mb-40{margin-bottom:40px}.mb-60{margin-bottom:60px}
.lead{font-size:17px;line-height:1.9}
.muted{color:var(--c-muted)}
.primary{color:var(--c-primary)}
.green{color:var(--c-green)}
.ink{color:var(--c-ink)}
.small{font-size:13px}
.fw-500{font-weight:500}
.fw-600{font-weight:600}
.fw-700{font-weight:700}
.hidden{display:none!important}

/* 区块标题体系 */
.sec-head{max-width:760px;margin:0 auto 56px;text-align:center;position:relative;z-index:2}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:2px;
  color:var(--c-primary);
  background:linear-gradient(90deg,var(--c-primary-soft),var(--c-green-soft));
  padding:7px 18px;border-radius:40px;margin-bottom:18px;
}
.sec-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-green);box-shadow:0 0 0 4px rgba(46,191,139,.15)}
.sec-title{font-size:34px;line-height:1.3;margin-bottom:16px;font-weight:800}
.sec-title em{font-style:normal;background:linear-gradient(90deg,var(--c-primary),var(--c-green));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.sec-desc{font-size:16px;color:var(--c-body);line-height:1.9}
.sec-head.left{text-align:left;margin-left:0}
.sec-head.left .sec-eyebrow{justify-content:flex-start}

/* 渐变文字 */
.grad-text{
  background:linear-gradient(90deg,var(--c-primary),var(--c-green));
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

/* 背景装饰圆 */
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none;z-index:0}
.blob-blue{background:radial-gradient(circle,#cfe6ff,#eef6ff);width:420px;height:420px}
.blob-green{background:radial-gradient(circle,#d5f4e7,#effbf5);width:380px;height:380px}

/* ============ 03. 波浪渐变背景体系 ============ */
/* 波纹分隔层：置于区块底部 */
.wave{position:absolute;left:0;right:0;bottom:-1px;line-height:0;pointer-events:none;z-index:1}
.wave svg{width:100%;height:70px;display:block}
.wave.top{top:-1px;bottom:auto;transform:rotate(180deg)}
.wave.fill-white svg path{fill:#ffffff}
.wave.fill-bg svg path{fill:#f6fafe}
.wave.fill-blue svg path{fill:#eaf3ff}
.wave.fill-green svg path{fill:#e9f8f1}

/* 动态渐变底（可滚动动画的背景） */
.gradient-bg{position:relative;overflow:hidden;background:var(--c-white)}
.gradient-bg::before{
  content:"";position:absolute;inset:-20% -10%;
  background:
    radial-gradient(40% 60% at 12% 18%,rgba(47,124,246,.16),transparent 60%),
    radial-gradient(38% 58% at 88% 8%,rgba(46,191,139,.15),transparent 60%),
    radial-gradient(45% 60% at 78% 88%,rgba(47,124,246,.10),transparent 62%),
    radial-gradient(42% 55% at 15% 82%,rgba(46,191,139,.10),transparent 60%);
  animation:gradDrift 22s ease-in-out infinite alternate;
  z-index:0;
}
@keyframes gradDrift{
  0%{transform:translate(0,0) rotate(0deg) scale(1)}
  50%{transform:translate(2%,-2%) rotate(2deg) scale(1.04)}
  100%{transform:translate(-2%,2%) rotate(-2deg) scale(1.02)}
}
.gradient-bg > *{position:relative;z-index:1}

/* 柔光渐变条 */
.soft-strip{
  position:absolute;height:220px;left:0;right:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(232,242,254,0),rgba(232,242,254,.7) 50%,rgba(228,247,239,0));
}

/* ============ 04. 按钮 / 徽章 / 标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 30px;border-radius:50px;font-size:15px;font-weight:600;
  transition:all var(--transition);position:relative;overflow:hidden;line-height:1.4;
  border:2px solid transparent;white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:0 0 auto}
.btn-primary{
  background:linear-gradient(90deg,var(--c-primary),#4f93f9);
  color:#fff;box-shadow:0 10px 26px rgba(47,124,246,.32);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(47,124,246,.4)}
.btn-green{
  background:linear-gradient(90deg,var(--c-green),#43d09a);
  color:#fff;box-shadow:0 10px 26px rgba(46,191,139,.3);
}
.btn-green:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(46,191,139,.4)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:var(--c-primary);color:#fff;transform:translateY(-3px)}
.btn-ghost-white{border-color:rgba(255,255,255,.7);color:#fff;background:transparent}
.btn-ghost-white:hover{background:#fff;color:var(--c-primary);transform:translateY(-3px)}
.btn-soft{background:var(--c-primary-soft);color:var(--c-primary)}
.btn-soft:hover{background:var(--c-primary);color:#fff;transform:translateY(-3px)}
.btn-sm{padding:9px 20px;font-size:13.5px}
.btn-lg{padding:16px 40px;font-size:16px}
.btn-arrow::after{content:"→";font-size:18px;transition:transform var(--transition)}
.btn-arrow:hover::after{transform:translateX(5px)}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:5px 14px;border-radius:30px;font-size:12.5px;font-weight:600;
}
.badge-blue{background:var(--c-primary-soft);color:var(--c-primary)}
.badge-green{background:var(--c-green-soft);color:var(--c-green-deep)}
.badge-ink{background:#EAF0F7;color:var(--c-ink)}

/* 标签 pill */
.pill{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:30px;background:#fff;border:1px solid var(--c-line);font-size:13px;color:var(--c-body);transition:all var(--transition)}
.pill:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--shadow-sm)}

/* 数字统计 */
.stat-num{font-size:42px;font-weight:800;line-height:1.2}

/* ============ 05. 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  transition:all var(--transition);
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
}
.site-header .header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;transition:height var(--transition);
}
.site-header.scrolled{
  background:rgba(255,255,255,.96);
  box-shadow:0 8px 30px rgba(21,42,63,.08);
  border-bottom-color:var(--c-line);
}
.site-header.scrolled .header-inner{height:64px}
.logo{display:flex;align-items:center;gap:11px}
.logo img{height:40px;width:auto;transition:height var(--transition)}
.logo .logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo .logo-text b{font-size:19px;color:var(--c-ink);font-weight:800;letter-spacing:.5px}
.logo .logo-text span{font-size:11px;color:var(--c-muted);letter-spacing:1.5px}

.main-nav{display:flex;align-items:center}
.main-nav ul{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0;flex-wrap:nowrap}
.main-nav ul > li{position:relative}
.main-nav ul > li > a{
  display:flex;align-items:center;gap:5px;
  padding:10px 12px;font-size:14.5px;font-weight:600;color:var(--c-ink);
  border-radius:10px;transition:all var(--transition);white-space:nowrap;line-height:1.2;
}
.main-nav ul > li > a svg{width:14px;height:14px;transition:transform var(--transition)}
.main-nav ul > li > a:hover,
.main-nav ul > li.active > a{color:var(--c-primary)}
.main-nav ul > li > a:hover svg,.main-nav ul > li.active > a svg{transform:rotate(180deg)}

/* 下拉菜单 */
.dropdown{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(12px);
  min-width:240px;background:#fff;border-radius:16px;padding:12px;
  box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:all var(--transition);
  border:1px solid var(--c-line);}
.dropdown::before{content:"";position:absolute;top:-8px;left:50%;transform:translateX(-50%);border:8px solid transparent;border-bottom-color:#fff;filter:drop-shadow(0 -2px 2px rgba(21,42,63,.04))}
.main-nav ul > li:hover .dropdown,
.main-nav ul > li:focus-within .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;font-size:14px;color:var(--c-body);transition:all var(--transition)}
.dropdown a svg{width:16px;height:16px;color:var(--c-primary);flex:0 0 auto}
.dropdown a:hover{background:var(--c-primary-mist);color:var(--c-primary);padding-left:18px}
.dropdown .d-title{font-size:12px;color:var(--c-muted);padding:6px 14px;letter-spacing:1px;font-weight:600}

/* 下拉-宽列 */
.dropdown.mega{width:640px;left:auto;right:0;transform:translateY(12px)}
.main-nav ul > li:hover .dropdown.mega,
.main-nav ul > li:focus-within .dropdown.mega{transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px}
.mega-head{font-size:13px;font-weight:700;color:var(--c-ink);padding:8px 14px 4px;letter-spacing:.5px;display:flex;align-items:center;gap:8px}
.mega-head svg{width:15px;height:15px;color:var(--c-primary)}

.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .btn{padding:10px 22px;font-size:14px}
.header-actions .tel{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:700;color:var(--c-ink)}
.header-actions .tel svg{width:20px;height:20px;color:var(--c-green)}
.header-actions .tel small{display:block;font-size:11px;font-weight:500;color:var(--c-muted);line-height:1.2}

/* 汉堡按钮 */
.burger{display:none;width:44px;height:44px;border-radius:12px;background:var(--c-primary-mist);position:relative;z-index:1101}
.burger span{position:absolute;left:12px;right:12px;height:2.5px;border-radius:4px;background:var(--c-ink);transition:all .3s ease}
.burger span:nth-child(1){top:14px}
.burger span:nth-child(2){top:20.5px}
.burger span:nth-child(3){top:27px}
.burger.open span:nth-child(1){top:20.5px;transform:rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){top:20.5px;transform:rotate(-45deg)}

/* ============ 06. 移动端抽屉菜单 ============ */
.mobile-mask{position:fixed;inset:0;background:rgba(21,42,63,.45);backdrop-filter:blur(4px);z-index:1090;opacity:0;visibility:hidden;transition:all .4s ease}
.mobile-mask.show{opacity:1;visibility:visible}
.mobile-menu{
  position:fixed;top:0;right:0;bottom:0;width:330px;max-width:86vw;z-index:1100;
  background:linear-gradient(180deg,#fff,#f6fafe);
  box-shadow:-20px 0 60px rgba(21,42,63,.18);
  transform:translateX(105%);transition:transform .45s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;overflow:hidden;
}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--c-line)}
.mobile-menu-head .logo img{height:34px}
.mobile-menu-close{width:38px;height:38px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);font-size:17px;display:flex;align-items:center;justify-content:center}
.mobile-menu-body{flex:1;overflow-y:auto;padding:14px 18px 30px}
.mobile-menu-body > ul > li{border-bottom:1px solid var(--c-line)}
.mobile-menu-body > ul > li > a{display:flex;align-items:center;justify-content:space-between;padding:14px 8px;font-size:15.5px;font-weight:600;color:var(--c-ink)}
.mobile-menu-body .sub-toggle{color:var(--c-muted);width:30px;height:30px;border-radius:8px;display:flex;align-items:center;justify-content:center;background:var(--c-bg);transition:all .3s}
.mobile-menu-body .sub-toggle.open{transform:rotate(180deg);color:var(--c-primary)}
.mobile-menu-body .mm-sub{display:none;padding:0 8px 14px;background:var(--c-bg);border-radius:14px;margin-bottom:8px}
.mobile-menu-body .mm-sub a{display:block;padding:10px 12px;font-size:14px;color:var(--c-body);border-radius:8px}
.mobile-menu-body .mm-sub a:hover{color:var(--c-primary);background:#fff}
.mobile-menu-foot{padding:18px 22px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:10px}

/* ============ 07. 页脚 ============ */
.site-footer{position:relative;background:linear-gradient(180deg,#0f2338,#132c47);color:#b8c9da;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(32% 40% at 8% 0%,rgba(47,124,246,.22),transparent 60%),
    radial-gradient(30% 42% at 96% 12%,rgba(46,191,139,.16),transparent 60%);
  pointer-events:none;
}
.footer-wave{position:absolute;top:-1px;left:0;right:0;line-height:0}
.footer-wave svg{width:100%;height:56px;display:block}
.footer-main{position:relative;padding:84px 0 56px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand .footer-logo{display:flex;align-items:center;gap:11px;margin-bottom:20px}
.footer-brand .footer-logo img{height:38px}
.footer-brand .footer-logo b{font-size:19px;color:#fff}
.footer-brand p{font-size:14px;line-height:2;color:#9db1c4}
.footer-contact{display:flex;flex-direction:column;gap:13px;margin-top:22px}
.footer-contact li{display:flex;gap:11px;font-size:13.5px;color:#c6d6e5;align-items:flex-start}
.footer-contact li svg{width:17px;height:17px;flex:0 0 auto;margin-top:3px;color:#57d4a4}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:22px;position:relative;padding-bottom:12px;font-weight:700}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:34px;height:3px;border-radius:4px;background:linear-gradient(90deg,var(--c-primary),var(--c-green))}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:14px;color:#9db1c4;display:inline-flex;align-items:center;gap:8px;transition:all var(--transition)}
.footer-col ul a::before{content:"";width:5px;height:5px;border-radius:50%;background:#4a6785;transition:all var(--transition)}
.footer-col ul a:hover{color:#fff;transform:translateX(5px)}
.footer-col ul a:hover::before{background:var(--c-green)}
.footer-news li{display:flex;gap:12px;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.08)}
.footer-news li img{width:64px;height:46px;object-fit:cover;border-radius:9px;flex:0 0 auto}
.footer-news li a{font-size:13px;line-height:1.6;color:#c6d6e5}
.footer-news li a:hover{color:#fff}
.footer-news li time{display:block;font-size:11.5px;color:#6d8398;margin-top:4px}
.footer-news li:last-child{border-bottom:none}
.footer-qr{display:flex;gap:20px;margin-top:22px}
.footer-qr .qr-box{text-align:center}
.footer-qr .qr-box img{width:96px;height:96px;border-radius:12px;border:1px solid rgba(255,255,255,.12)}
.footer-qr .qr-box span{display:block;font-size:11.5px;color:#8ba0b5;margin-top:8px}
.footer-bottom{position:relative;border-top:1px solid rgba(255,255,255,.08);padding:22px 0;font-size:13px;color:#7d93a8}
.footer-bottom .container{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom a{color:#9db1c4}
.footer-bottom a:hover{color:#fff}
.footer-bottom .icp{display:inline-flex;align-items:center;gap:7px}
.footer-bottom .icp img{width:15px;height:15px;display:inline-block}
.footer-links{display:flex;gap:18px}

/* ============ 08. 通用组件 ============ */
/* 08-1 卡片 */
.card{
  background:#fff;border-radius:var(--radius);border:1px solid var(--c-line);
  transition:all var(--transition);position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.card .card-media{overflow:hidden;position:relative}
.card .card-media img{width:100%;height:auto;transition:transform .6s ease}
.card:hover .card-media img{transform:scale(1.06)}
.card .card-body{padding:26px}

/* 08-2 特性盒子 */
.feature-box{
  background:#fff;border-radius:var(--radius);padding:34px 28px;
  border:1px solid var(--c-line);transition:all var(--transition);position:relative;
  overflow:hidden;height:100%;
}
.feature-box::before{
  content:"";position:absolute;left:0;top:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-green));
  opacity:0;transition:opacity var(--transition);
}
.feature-box:hover{transform:translateY(-8px);box-shadow:var(--shadow-md);border-color:transparent}
.feature-box:hover::before{opacity:1}
.feature-icon{
  width:64px;height:64px;border-radius:18px;margin-bottom:20px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary-soft),var(--c-green-soft));
  color:var(--c-primary);transition:all var(--transition);
}
.feature-icon svg{width:30px;height:30px}
.feature-box:hover .feature-icon{background:linear-gradient(135deg,var(--c-primary),var(--c-green));color:#fff;transform:rotate(-6deg) scale(1.06)}
.feature-box h3{font-size:18px;margin-bottom:12px}
.feature-box p{font-size:14px;line-height:1.85}

/* 08-3 分步流程 */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:26px;counter-reset:step}
.step{background:#fff;border-radius:var(--radius);padding:30px 26px;border:1px solid var(--c-line);position:relative;transition:all var(--transition)}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.step-num{
  width:52px;height:52px;border-radius:50%;margin-bottom:18px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),var(--c-green));
  color:#fff;font-size:20px;font-weight:800;box-shadow:0 10px 22px rgba(47,124,246,.28);
}
.step h4{font-size:17px;margin-bottom:10px}
.step p{font-size:13.5px;color:var(--c-body)}
.step::after{
  content:"→";position:absolute;right:-22px;top:50%;transform:translateY(-50%);
  font-size:24px;color:var(--c-primary);z-index:2;font-weight:700;
}
.step:last-child::after{display:none}

/* 08-4 面包屑 */
.breadcrumb-wrap{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.75);flex-wrap:wrap}
.breadcrumb-wrap a{color:rgba(255,255,255,.85)}
.breadcrumb-wrap a:hover{color:#fff}
.breadcrumb-wrap i{font-style:normal;color:rgba(255,255,255,.4)}

/* 08-5 分页 */
.pagination{display:flex;gap:9px;justify-content:center;flex-wrap:wrap;margin-top:50px}
.pagination a,.pagination span{
  min-width:44px;height:44px;padding:0 14px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;color:var(--c-body);
  background:#fff;border:1px solid var(--c-line);transition:all var(--transition);
}
.pagination a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.pagination .current{background:linear-gradient(90deg,var(--c-primary),var(--c-green));color:#fff;border-color:transparent}

/* 08-6 表单 */
.form-field{margin-bottom:20px;position:relative}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:9px}
.form-control{
  width:100%;padding:13px 18px;border-radius:13px;font-size:14.5px;color:var(--c-ink);
  background:var(--c-bg);border:1.5px solid transparent;transition:all var(--transition);
}
.form-control:focus{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(47,124,246,.12)}
textarea.form-control{resize:vertical;min-height:130px}
select.form-control{appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2353677e' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;padding-right:42px;
}
.form-check{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--c-body)}
.form-check input{width:17px;height:17px;accent-color:var(--c-primary)}

/* 08-7 手风琴 FAQ */
.acc-item{background:#fff;border:1px solid var(--c-line);border-radius:15px;margin-bottom:14px;overflow:hidden;transition:all var(--transition)}
.acc-item.open{border-color:transparent;box-shadow:var(--shadow-md)}
.acc-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;cursor:pointer;user-select:none}
.acc-head h4{font-size:15.5px;margin:0;font-weight:600}
.acc-icon{width:30px;height:30px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);flex:0 0 auto;display:flex;align-items:center;justify-content:center;transition:all var(--transition)}
.acc-icon::before,.acc-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.acc-icon{position:relative}
.acc-icon::before{width:12px;height:2px}
.acc-icon::after{width:2px;height:12px}
.acc-item.open .acc-icon{background:linear-gradient(135deg,var(--c-primary),var(--c-green));color:#fff}
.acc-item.open .acc-icon::after{transform:scaleY(0)}
.acc-body{max-height:0;overflow:hidden;transition:max-height .45s ease}
.acc-body-inner{padding:0 24px 22px;font-size:14.5px;line-height:1.9;color:var(--c-body)}

/* 08-8 标签页 */
.tabs-nav{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:44px}
.tab-btn{
  padding:11px 26px;border-radius:40px;background:#fff;border:1px solid var(--c-line);
  font-size:14.5px;font-weight:600;color:var(--c-body);transition:all var(--transition);
}
.tab-btn:hover{border-color:var(--c-primary);color:var(--c-primary)}
.tab-btn.active{background:linear-gradient(90deg,var(--c-primary),var(--c-green));color:#fff;border-color:transparent;box-shadow:0 10px 24px rgba(47,124,246,.28)}
.tab-panel{display:none;animation:fadeUp .5s ease both}
.tab-panel.active{display:block}

/* 08-9 时间线 */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:36px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2.5px;background:linear-gradient(180deg,var(--c-primary),var(--c-green))}
.tl-item{position:relative;padding:0 0 40px 34px}
.tl-item::before{content:"";position:absolute;left:-31px;top:6px;width:18px;height:18px;border-radius:50%;background:#fff;border:5px solid var(--c-primary);box-shadow:0 0 0 5px rgba(47,124,246,.15)}
.tl-item:nth-child(even)::before{border-color:var(--c-green);box-shadow:0 0 0 5px rgba(46,191,139,.15)}
.tl-item time{font-size:13px;font-weight:700;color:var(--c-primary);background:var(--c-primary-soft);padding:4px 14px;border-radius:20px;display:inline-block;margin-bottom:12px}
.tl-item h4{font-size:18px;margin-bottom:8px}
.tl-item p{font-size:14.5px;color:var(--c-body)}

/* 08-10 报价单 */
.price-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--c-line);padding:38px 30px;position:relative;transition:all var(--transition);height:100%}
.price-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-md)}
.price-card.featured{background:linear-gradient(160deg,#f4faff,#effaf4);border:2px solid transparent;background-clip:padding-box;position:relative}
.price-card.featured::after{content:"";position:absolute;inset:0;border-radius:var(--radius-lg);padding:2px;background:linear-gradient(135deg,var(--c-primary),var(--c-green));-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.price-tag{font-size:13px;color:var(--c-muted);font-weight:600;letter-spacing:1px}
.price-amount{font-size:44px;font-weight:800;color:var(--c-ink);margin:8px 0 4px}
.price-amount small{font-size:15px;color:var(--c-muted);font-weight:500}
.price-card ul{margin:26px 0}
.price-card ul li{display:flex;gap:11px;align-items:flex-start;padding:8px 0;font-size:14px;color:var(--c-body)}
.price-card ul li svg{width:18px;height:18px;color:var(--c-green);flex:0 0 auto;margin-top:3px}

/* 08-11 客户评价 */
.quote-card{background:#fff;border-radius:var(--radius);padding:32px;border:1px solid var(--c-line);position:relative;transition:all var(--transition);height:100%}
.quote-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.quote-card .quote-mark{font-size:64px;line-height:1;font-family:Georgia,serif;color:var(--c-primary-soft);position:absolute;top:18px;right:24px}
.quote-card p{font-size:14.5px;line-height:1.9;color:var(--c-body);margin-bottom:20px}
.quote-author{display:flex;align-items:center;gap:14px}
.quote-author img{width:48px;height:48px;border-radius:50%;object-fit:cover}
.quote-author b{display:block;font-size:14.5px;color:var(--c-ink)}
.quote-author span{font-size:12.5px;color:var(--c-muted)}

/* 08-12 数据指标条 */
.metric-bar{margin-bottom:26px}
.metric-bar .metric-top{display:flex;justify-content:space-between;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:10px}
.metric-bar .metric-top span:last-child{color:var(--c-primary)}
.metric-track{height:9px;border-radius:10px;background:#eaf1f8;overflow:hidden}
.metric-fill{height:100%;border-radius:10px;background:linear-gradient(90deg,var(--c-primary),var(--c-green));width:0;transition:width 1.4s cubic-bezier(.2,.7,.2,1)}

/* 08-13 合作伙伴logo墙 */
.logo-wall{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:18px}
.logo-cell{background:#fff;border:1px solid var(--c-line);border-radius:16px;height:96px;display:flex;align-items:center;justify-content:center;padding:16px;transition:all var(--transition);filter:grayscale(.4);opacity:.75}
.logo-cell:hover{filter:none;opacity:1;transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:transparent}
.logo-cell img{max-height:46px;width:auto;object-fit:contain}

/* 08-14 提示横幅 */
.notice-bar{display:flex;align-items:center;gap:14px;padding:16px 22px;border-radius:14px;font-size:14px;margin-bottom:20px}
.notice-bar svg{width:20px;height:20px;flex:0 0 auto}
.notice-blue{background:var(--c-primary-mist);color:var(--c-primary-deep);border:1px solid #cfe3ff}
.notice-green{background:var(--c-green-mist);color:var(--c-green-deep);border:1px solid #c8efdd}

/* 08-15 标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud a{padding:8px 16px;background:#fff;border:1px solid var(--c-line);border-radius:30px;font-size:13px;color:var(--c-body);transition:all var(--transition)}
.tag-cloud a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}

/* 08-16 通用网格 */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}

/* 08-17 文字轮换（Hero 打字机效果） */
.type-rotate{display:inline-block;min-width:8em;text-align:left;color:var(--c-primary)}
.type-rotate b{display:none;animation:typeFade .5s ease both}
.type-rotate b:first-child{display:inline}
.type-rotate b.on{display:inline}
@keyframes typeFade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ============ 09. 滚动动画 ============ */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.reveal-left{opacity:0;transform:translateX(-40px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal-left.in{opacity:1;transform:none}
.reveal-right{opacity:0;transform:translateX(40px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal-right.in{opacity:1;transform:none}
.reveal-scale{opacity:0;transform:scale(.92);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal-scale.in{opacity:1;transform:none}
.delay-1{transition-delay:.1s}.delay-2{transition-delay:.2s}.delay-3{transition-delay:.3s}.delay-4{transition-delay:.4s}.delay-5{transition-delay:.5s}
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes floatY2{0%,100%{transform:translateY(0)}50%{transform:translateY(12px)}}
@keyframes spinSlow{to{transform:rotate(360deg)}}
@keyframes pulseRing{0%{box-shadow:0 0 0 0 rgba(47,124,246,.35)}70%{box-shadow:0 0 0 16px rgba(47,124,246,0)}100%{box-shadow:0 0 0 0 rgba(47,124,246,0)}}
@keyframes shimmer{0%{background-position:-400px 0}100%{background-position:400px 0}}

/* ============ 10. 返回顶部 / 预加载 ============ */
.back-top{
  position:fixed;right:26px;bottom:30px;z-index:999;
  width:50px;height:50px;border-radius:50%;
  background:linear-gradient(135deg,var(--c-primary),var(--c-green));
  color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 30px rgba(47,124,246,.35);
  opacity:0;visibility:hidden;transform:translateY(16px);
  transition:all var(--transition);
}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top:hover{transform:translateY(-4px)}
.back-top svg{width:20px;height:20px}
.float-consult{position:fixed;right:26px;bottom:94px;z-index:999;display:flex;flex-direction:column;gap:12px}
.float-consult a{
  width:50px;height:50px;border-radius:16px;background:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(21,42,63,.16);color:var(--c-primary);
  border:1px solid var(--c-line);transition:all var(--transition);
}
.float-consult a svg{width:22px;height:22px}
.float-consult a:hover{background:linear-gradient(135deg,var(--c-primary),var(--c-green));color:#fff;transform:translateY(-3px)}
.float-consult .fc-wx{position:relative}
.float-consult .fc-wx .wx-pop{position:absolute;right:62px;bottom:0;width:150px;background:#fff;border-radius:14px;padding:10px;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:all var(--transition)}
.float-consult .fc-wx:hover .wx-pop{opacity:1;visibility:visible}
.float-consult .fc-wx .wx-pop img{width:100%;border-radius:8px}

/* 响应式断点 */
@media (max-width:1200px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .main-nav ul{gap:0}
  .main-nav ul > li > a{padding:10px 9px;font-size:14px}
  .header-actions{gap:9px}
  .header-actions .tel{font-size:13.5px;gap:7px}
  .header-actions .tel svg{width:18px;height:18px}
  .header-actions .btn{padding:9px 18px;font-size:13.5px}
  .logo .logo-text b{font-size:17.5px}
  .logo .logo-text span{font-size:10.5px;letter-spacing:1px}
}
@media (max-width:1050px){
  .main-nav,.header-actions .tel{display:none}
  .burger{display:flex}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .sec-title{font-size:28px}
  .main-nav,.header-actions .tel{display:none}
  .burger{display:flex}
  .container{padding:0 20px}
}
@media (max-width:768px){
  .section{padding:60px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:1fr}
  .step::after{display:none}
  .sec-title{font-size:25px}
  .footer-bottom .container{flex-direction:column;text-align:center}
  .footer-links{flex-wrap:wrap;justify-content:center}
  .dropdown{display:none}
}

/* ============ 头部 mega 菜单 CTA 卡片 ============ */
.mega-cta{background:linear-gradient(160deg,#f2f8ff,#eefaf5);border:1px solid #e3eefb;border-radius:16px;padding:14px;text-align:center}
.mega-cta img{width:100%;height:158px;object-fit:cover;border-radius:10px;margin-bottom:12px;display:block}
.mega-cta .btn{width:100%;justify-content:center}