/* ========================================
   凯波集团门户网站 - 公共样式
   Ningbo Kaibo Group Portal - Shared Styles
   ======================================== */

/* ===== Reset & Base ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:#333;background:#fff;line-height:1.7;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit;transition:color .3s}
img{display:block;max-width:100%;height:auto}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;outline:none}
input,textarea,select{font-family:inherit;font-size:inherit;outline:none}

/* ===== CSS Variables ===== */
:root{
  --primary:#1a3a5c;
  --primary-light:#2c5f8a;
  --primary-dark:#0f2540;
  --accent:#ff6b35;
  --accent-light:#ff8a5c;
  --gray-1:#f8f9fa;
  --gray-2:#e9ecef;
  --gray-3:#dee2e6;
  --gray-4:#adb5bd;
  --gray-5:#6c757d;
  --gray-6:#495057;
  --text:#2d3436;
  --text-light:#6c757d;
  --white:#fff;
  --shadow-sm:0 2px 8px rgba(0,0,0,.06);
  --shadow-md:0 4px 20px rgba(0,0,0,.1);
  --shadow-lg:0 8px 40px rgba(0,0,0,.12);
  --radius:8px;
  --radius-lg:16px;
  --container:max-width:1200px;
  --transition:all .3s ease;
}

/* ===== Container ===== */
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}

/* ===== Section Title ===== */
.section-title{
  text-align:center;
  margin-bottom:48px;
}
.section-title h2{
  font-size:clamp(24px,4vw,36px);
  font-weight:700;
  color:var(--primary);
  margin-bottom:12px;
  position:relative;
  display:inline-block;
}
.section-title h2::after{
  content:"";
  position:absolute;
  bottom:-10px;left:50%;
  transform:translateX(-50%);
  width:60px;height:3px;
  background:var(--accent);
  border-radius:2px;
}
.section-title p{
  color:var(--text-light);
  font-size:16px;
  margin-top:18px;
}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;
  z-index:1000;
  background:rgba(255,255,255,.98);
  backdrop-filter:blur(8px);
  box-shadow:var(--shadow-sm);
  transition:var(--transition);
}
.header-inner{
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-size:22px;font-weight:800;
  color:var(--primary);
  letter-spacing:1px;
}
.logo .logo-img{
  height:40px;
  width:auto;
  flex-shrink:0;
}
.logo .logo-icon{
  width:40px;height:40px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:20px;font-weight:900;
}
.logo .logo-text small{
  display:block;
  font-size:11px;font-weight:400;
  color:var(--gray-5);
  letter-spacing:2px;
  margin-top:-2px;
}

/* Nav */
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
}
.main-nav a{
  padding:8px 16px;
  font-size:15px;font-weight:500;
  color:var(--gray-6);
  border-radius:6px;
  position:relative;
  transition:var(--transition);
}
.main-nav a:hover{color:var(--primary)}
.main-nav a.active{
  color:var(--primary);
  font-weight:600;
}
.main-nav a.active::after{
  content:"";
  position:absolute;
  bottom:2px;left:50%;
  transform:translateX(-50%);
  width:20px;height:2px;
  background:var(--accent);
  border-radius:1px;
}

/* Language Switch */
.lang-switch{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:12px;
  padding-left:12px;
  border-left:1px solid var(--gray-3);
}
.lang-switch button{
  padding:4px 10px;
  font-size:13px;
  border-radius:4px;
  color:var(--gray-5);
  background:transparent;
  transition:var(--transition);
}
.lang-switch button.active{
  background:var(--primary);
  color:#fff;
}

/* Mobile Menu Toggle */
.menu-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  padding:8px;
  background:transparent;
}
.menu-toggle span{
  width:24px;height:2px;
  background:var(--primary);
  border-radius:1px;
  transition:var(--transition);
}

/* ===== Page Banner (Inner Pages) ===== */
.page-banner{
  margin-top:72px;
  padding:80px 20px;
  text-align:center;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.page-banner::before{
  content:"";
  position:absolute;
  top:0;right:0;
  width:400px;height:100%;
  background:radial-gradient(ellipse,rgba(255,107,53,.1),transparent 70%);
}
.page-banner h1{
  font-size:clamp(28px,5vw,42px);
  font-weight:700;
  margin-bottom:10px;
  position:relative;z-index:1;
}
.page-banner .breadcrumb{
  font-size:14px;
  opacity:.7;
  position:relative;z-index:1;
}
.page-banner .breadcrumb a:hover{color:var(--accent-light)}

/* ===== Footer ===== */
.site-footer{
  background:var(--primary-dark);
  color:#adb5bd;
  padding:60px 0 0;
}
.footer-grid{
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  margin-bottom:40px;
}
.footer-brand .logo{
  color:#fff;
  margin-bottom:16px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:#8b9cb0;
}
.footer-col h4{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-col ul li{
  margin-bottom:10px;
}
.footer-col ul li a{
  font-size:14px;
  color:#8b9cb0;
  transition:var(--transition);
}
.footer-col ul li a:hover{color:var(--accent-light)}
.footer-contact li{
  font-size:14px;
  color:#8b9cb0;
  margin-bottom:12px;
  display:flex;
  gap:8px;
  align-items:flex-start;
}
.footer-contact li .icon{
  flex-shrink:0;
  width:18px;height:18px;
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);
  margin-top:2px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px;
  text-align:center;
  font-size:13px;
  color:#6c7a8a;
}

/* ===== Footer Quick Links (Internal Systems) ===== */
.footer-quicklinks{
  max-width:1200px;
  margin:0 auto;
  padding:24px 20px;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:12px 28px;
}
.footer-quicklinks .ql-label{
  font-size:13px;
  font-weight:600;
  color:#8b9cb0;
  letter-spacing:1px;
}
.footer-quicklinks .ql-item{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:#8b9cb0;
  transition:var(--transition);
}
.footer-quicklinks .ql-item:hover{
  color:var(--accent-light);
}
.footer-quicklinks .ql-item .ql-icon{
  font-size:14px;
}
.footer-quicklinks .ql-item .ql-note{
  font-size:11px;
  opacity:.6;
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 32px;
  font-size:15px;
  font-weight:600;
  border-radius:6px;
  transition:var(--transition);
  letter-spacing:1px;
}
.btn-primary{
  background:var(--accent);
  color:#fff;
}
.btn-primary:hover{
  background:var(--accent-light);
  transform:translateY(-2px);
  box-shadow:0 6px 20px rgba(255,107,53,.3);
}
.btn-outline{
  background:transparent;
  color:#fff;
  border:2px solid rgba(255,255,255,.5);
}
.btn-outline:hover{
  background:#fff;
  color:var(--primary);
  border-color:#fff;
}
.btn-outline-dark{
  background:transparent;
  color:var(--primary);
  border:2px solid var(--primary);
}
.btn-outline-dark:hover{
  background:var(--primary);
  color:#fff;
}

/* ===== Animations ===== */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(30px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes fadeIn{
  from{opacity:0}
  to{opacity:1}
}
.fade-up{animation:fadeUp .8s ease forwards}
.fade-in{animation:fadeIn 1s ease forwards}

/* ===== Responsive ===== */
@media(max-width:900px){
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:30px;
  }
}

@media(max-width:768px){
  .header-inner{height:60px}
  .logo{font-size:18px}
  .logo .logo-icon{width:34px;height:34px;font-size:17px}

  .menu-toggle{display:flex}
  .main-nav{
    position:fixed;
    top:60px;left:0;right:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    padding:16px;
    gap:0;
    box-shadow:var(--shadow-md);
    transform:translateY(-150%);
    transition:transform .3s ease;
    max-height:calc(100vh - 60px);
    overflow-y:auto;
  }
  .main-nav.open{transform:translateY(0)}
  .main-nav a{
    padding:14px 16px;
    border-bottom:1px solid var(--gray-2);
    border-radius:0;
  }
  .main-nav a.active::after{display:none}
  .lang-switch{
    margin:12px 0 0;
    padding:12px 0 0;
    border-left:none;
    border-top:1px solid var(--gray-2);
    justify-content:center;
  }

  .page-banner{margin-top:60px;padding:60px 20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .section-title{margin-bottom:32px}
}

/* ===== Utility ===== */
.text-center{text-align:center}
.mt-40{margin-top:40px}
.mt-60{margin-top:60px}
.mb-40{margin-bottom:40px}
.hidden{display:none!important}