:root{
  --brand:#0f2b3d;
  --brand-light:#1b4a6b;
  --accent:#e8a33d;
  --accent-soft:#fdf3e3;
  --text:#1e2a36;
  --text-light:#4a5b6a;
  --bg:#f7f9fb;
  --card:#ffffff;
  --border:#e2e8f0;
  --shadow:0 4px 20px rgba(15,43,61,.06);
  --radius:14px;
  --header-h:72px;
  --glass:rgba(255,255,255,.72);
  --glass-border:rgba(255,255,255,.55);
  --gradient-brand:linear-gradient(135deg,#0f2b3d 0%,#1b4a6b 55%,#2b6b8f 100%);
  --gradient-accent:linear-gradient(120deg,#e8a33d 0%,#f0b35a 50%,#f6c97a 100%);
}
[data-theme="dark"]{
  --brand:#0a1a26;
  --brand-light:#14324a;
  --accent:#f0b35a;
  --accent-soft:#2a2416;
  --text:#e6edf3;
  --text-light:#9fb0c0;
  --bg:#0e1a24;
  --card:#152533;
  --border:#243a4c;
  --shadow:0 4px 20px rgba(0,0,0,.35);
  --glass:rgba(21,37,51,.72);
  --glass-border:rgba(240,179,90,.18);
  --gradient-brand:linear-gradient(135deg,#0a1a26 0%,#14324a 55%,#1d4a68 100%);
  --gradient-accent:linear-gradient(120deg,#c98a2e 0%,#f0b35a 50%,#f6c97a 100%);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans CJK SC",sans-serif;
  line-height:1.75;color:var(--text);background:var(--bg);
  transition:background .3s,color .3s;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--brand-light);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
img,svg{max-width:100%;display:block}
ul{list-style:none}
button{font-family:inherit}
.container{width:min(1200px,92%);margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
::selection{background:var(--accent);color:#1a1408}

/* 顶部导航 - 毛玻璃 */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid var(--glass-border);
  box-shadow:var(--shadow);
  transition:background .3s,border-color .3s;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--header-h);gap:16px;
}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;color:var(--brand)}
.logo svg{width:38px;height:38px;flex-shrink:0;transition:transform .3s}
.logo:hover svg{transform:rotate(-6deg) scale(1.06)}
.logo span{color:var(--brand)}
[data-theme="dark"] .logo span{color:var(--text)}
.main-nav ul{display:flex;gap:6px;flex-wrap:wrap}
.main-nav a{
  display:block;padding:8px 14px;border-radius:8px;font-size:.94rem;
  color:var(--text-light);font-weight:500;position:relative;
}
.main-nav a:hover,.main-nav a:focus{background:var(--accent-soft);color:var(--brand)}
[data-theme="dark"] .main-nav a:hover,[data-theme="dark"] .main-nav a:focus{color:var(--accent)}
.header-actions{display:flex;align-items:center;gap:10px}
.search-box{
  display:flex;align-items:center;gap:6px;
  background:var(--bg);border:1px solid var(--border);
  border-radius:10px;padding:4px 10px;transition:border-color .2s,box-shadow .2s;
}
.search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(232,163,61,.15)}
.search-box input{
  border:none;background:transparent;outline:none;font-size:.9rem;
  color:var(--text);width:140px;font-family:inherit;
}
.search-box button{
  border:none;background:transparent;cursor:pointer;color:var(--text-light);
  display:flex;align-items:center;padding:2px;transition:color .2s;
}
.search-box button:hover{color:var(--accent)}
.theme-toggle{
  border:1px solid var(--border);background:var(--card);border-radius:10px;
  width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  cursor:pointer;color:var(--text);transition:background .2s,transform .2s;
}
.theme-toggle:hover{background:var(--accent-soft);transform:rotate(15deg)}
.menu-toggle{
  display:none;border:1px solid var(--border);background:var(--card);
  border-radius:10px;width:40px;height:40px;align-items:center;justify-content:center;
  cursor:pointer;color:var(--text);flex-direction:column;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .2s}

/* Banner 渐变轮播 */
.hero{
  position:relative;overflow:hidden;
  background:var(--gradient-brand);
  color:#fff;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 80% 20%,rgba(232,163,61,.22),transparent 45%),
             radial-gradient(circle at 10% 90%,rgba(43,107,143,.5),transparent 50%);
  pointer-events:none;
}
.hero-slides{position:relative;min-height:420px}
.hero-slide{
  position:absolute;inset:0;opacity:0;transition:opacity .7s ease;
  display:flex;align-items:center;padding:48px 0;
}
.hero-slide.active{opacity:1;position:relative}
.hero-slide .container{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center}
.hero-content h1{font-size:clamp(1.7rem,3.5vw,2.6rem);line-height:1.3;margin-bottom:16px;font-weight:800}
.hero-content h1 em{color:var(--accent);font-style:normal;position:relative}
.hero-content p{font-size:1.05rem;color:#d6e2ec;max-width:560px;margin-bottom:24px}
.hero-badge{
  display:inline-block;background:rgba(232,163,61,.18);color:var(--accent);
  border:1px solid rgba(232,163,61,.4);border-radius:999px;
  padding:4px 14px;font-size:.82rem;margin-bottom:16px;letter-spacing:.5px;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 26px;
  border-radius:10px;font-weight:600;font-size:.95rem;cursor:pointer;
  border:1px solid transparent;transition:transform .15s,box-shadow .2s,background .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--accent);color:#1a1408}
.btn-primary:hover{background:#f0b35a;color:#1a1408;box-shadow:0 8px 22px rgba(232,163,61,.35)}
.btn-ghost{
  background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.35);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff}
.hero-visual svg{width:100%;height:auto;filter:drop-shadow(0 20px 40px rgba(0,0,0,.3));animation:floatY 6s ease-in-out infinite}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.hero-dots{
  position:absolute;bottom:20px;left:50%;transform:translateX(-50%);
  display:flex;gap:10px;z-index:5;
}
.hero-dots button{
  width:10px;height:10px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(255,255,255,.35);transition:background .2s,transform .2s;
}
.hero-dots button.active{background:var(--accent);transform:scale(1.25)}

/* 面包屑 */
.breadcrumb{padding:16px 0;font-size:.88rem;color:var(--text-light)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.breadcrumb li+li::before{content:"›";margin-right:6px;color:var(--text-light)}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--accent)}

/* 通用区块 */
.section{padding:56px 0}
.section-head{text-align:center;margin-bottom:40px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2rem);color:var(--brand);margin-bottom:12px;font-weight:800;position:relative;display:inline-block}
.section-head h2::after{
  content:"";display:block;width:56px;height:4px;border-radius:2px;
  background:var(--gradient-accent);margin:14px auto 0;
}
[data-theme="dark"] .section-head h2{color:var(--text)}
.section-head p{color:var(--text-light);max-width:680px;margin:0 auto;font-size:.98rem}
.section-alt{background:var(--card)}

/* 品牌介绍 */
.brand-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.brand-text h3{font-size:1.3rem;color:var(--brand);margin-bottom:12px}
[data-theme="dark"] .brand-text h3{color:var(--accent)}
.brand-text p{color:var(--text-light);margin-bottom:14px}
.brand-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}
.stat-card{
  background:var(--accent-soft);border-radius:var(--radius);padding:18px 12px;
  text-align:center;border:1px solid var(--border);
  transition:transform .2s,box-shadow .2s;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.stat-card .num{font-size:1.6rem;font-weight:800;color:var(--brand);display:block}
[data-theme="dark"] .stat-card .num{color:var(--accent)}
.stat-card .label{font-size:.82rem;color:var(--text-light)}
.brand-visual svg{width:100%;height:auto}

/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow);
  transition:transform .2s,box-shadow .2s,border-color .2s;
  position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--gradient-accent);transform:scaleX(0);transform-origin:left;
  transition:transform .3s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(15,43,61,.1);border-color:var(--accent)}
.card:hover::before{transform:scaleX(1)}
.card-icon{
  width:52px;height:52px;border-radius:12px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
  transition:transform .3s;
}
.card:hover .card-icon{transform:rotate(-8deg) scale(1.08)}
.card-icon svg{width:28px;height:28px}
.card h3{font-size:1.08rem;margin-bottom:10px;color:var(--brand)}
[data-theme="dark"] .card h3{color:var(--text)}
.card p{font-size:.92rem;color:var(--text-light)}

/* 解决方案 */
.solution-item{
  display:grid;grid-template-columns:64px 1fr;gap:18px;
  padding:22px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);margin-bottom:16px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.solution-item:hover{transform:translateX(4px);box-shadow:var(--shadow);border-color:var(--accent)}
.solution-num{
  width:52px;height:52px;border-radius:50%;
  background:var(--gradient-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;
}
.solution-item h3{font-size:1.05rem;margin-bottom:6px;color:var(--brand)}
[data-theme="dark"] .solution-item h3{color:var(--text)}
.solution-item p{font-size:.92rem;color:var(--text-light)}

/* 客户案例 */
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.case-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .25s,box-shadow .25s;
}
.case-card:hover{transform:translateY(-6px);box-shadow:0 16px 36px rgba(15,43,61,.14)}
.case-card .case-visual{
  background:var(--gradient-brand);padding:28px;
  display:flex;align-items:center;justify-content:center;
}
.case-card .case-visual svg{width:120px;height:120px;transition:transform .3s}
.case-card:hover .case-visual svg{transform:scale(1.08)}
.case-card .case-body{padding:22px}
.case-card h3{font-size:1.05rem;margin-bottom:8px;color:var(--brand)}
[data-theme="dark"] .case-card h3{color:var(--text)}
.case-card p{font-size:.9rem;color:var(--text-light);margin-bottom:12px}
.case-meta{font-size:.82rem;color:var(--text-light);display:flex;gap:14px;flex-wrap:wrap}
.stars{color:var(--accent);letter-spacing:2px}

/* 文章 */
.article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.article-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.article-card:hover{transform:translateY(-3px);border-color:var(--accent)}
.article-tag{
  align-self:flex-start;background:var(--accent-soft);color:var(--brand);
  font-size:.76rem;padding:3px 10px;border-radius:999px;margin-bottom:12px;font-weight:600;
}
[data-theme="dark"] .article-tag{color:var(--accent)}
.article-card h3{font-size:1.02rem;margin-bottom:10px;line-height:1.5;color:var(--brand)}
[data-theme="dark"] .article-card h3{color:var(--text)}
.article-card .excerpt{font-size:.9rem;color:var(--text-light);flex:1;margin-bottom:14px}
.article-meta{
  font-size:.8rem;color:var(--text-light);
  display:flex;justify-content:space-between;align-items:center;
  border-top:1px solid var(--border);padding-top:12px;
}
.read-more{font-weight:600;color:var(--brand-light);font-size:.86rem}
.read-more:hover{color:var(--accent)}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:var(--accent)}
.faq-item.open{box-shadow:var(--shadow)}
.faq-question{
  width:100%;text-align:left;background:transparent;border:none;cursor:pointer;
  padding:18px 22px;font-size:1rem;font-weight:600;color:var(--brand);
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-family:inherit;
}
[data-theme="dark"] .faq-question{color:var(--text)}
.faq-question .icon{transition:transform .3s;flex-shrink:0;color:var(--accent)}
.faq-item.open .faq-question .icon{transform:rotate(45deg)}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
  padding:0 22px;color:var(--text-light);font-size:.94rem;
}
.faq-item.open .faq-answer{max-height:400px;padding-bottom:18px}

/* HowTo */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-bottom:32px}
.howto-step{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;position:relative;box-shadow:var(--shadow);
  transition:transform .2s,border-color .2s;
}
.howto-step:hover{transform:translateY(-4px);border-color:var(--accent)}
.howto-step .step-num{
  position:absolute;top:-14px;left:22px;background:var(--gradient-accent);color:#1a1408;
  width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:.9rem;
}
.howto-step h3{font-size:1rem;margin:8px 0 8px;color:var(--brand)}
[data-theme="dark"] .howto-step h3{color:var(--text)}
.howto-step p{font-size:.9rem;color:var(--text-light)}
.howto-notes{
  background:var(--accent-soft);border-radius:var(--radius);padding:24px;
  border:1px solid var(--border);
}
.howto-notes h3{margin-bottom:12px;color:var(--brand)}
[data-theme="dark"] .howto-notes h3{color:var(--accent)}
.howto-notes ul{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}
.howto-notes li{font-size:.9rem;color:var(--text-light);padding-left:20px;position:relative}
.howto-notes li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h3{font-size:1.2rem;margin-bottom:18px;color:var(--brand)}
[data-theme="dark"] .contact-info h3{color:var(--text)}
.contact-item{display:flex;gap:14px;margin-bottom:18px;align-items:flex-start}
.contact-item svg{width:22px;height:22px;color:var(--accent);flex-shrink:0;margin-top:3px}
.contact-item .label{font-size:.82rem;color:var(--text-light)}
.contact-item .value{font-size:.95rem;color:var(--text);font-weight:500}
.contact-map{
  background:var(--gradient-brand);border-radius:var(--radius);padding:32px;
  display:flex;align-items:center;justify-content:center;min-height:280px;
  position:relative;overflow:hidden;
}
.contact-map::after{
  content:"";position:absolute;top:-40%;right:-30%;width:70%;height:120%;
  background:radial-gradient(circle,rgba(232,163,61,.25),transparent 60%);
  pointer-events:none;
}
.contact-map svg{width:100%;max-width:340px;height:auto;position:relative;z-index:1}

/* 页脚 */
.site-footer{background:var(--gradient-brand);color:#c9d8e4;padding:48px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;margin-bottom:36px}
.footer-brand .logo{margin-bottom:14px}
.footer-brand .logo span{color:#fff}
.footer-brand p{font-size:.88rem;color:#a9bccb;line-height:1.7}
.footer-col h4{color:#fff;font-size:.96rem;margin-bottom:14px;font-weight:700}
.footer-col ul li{margin-bottom:8px}
.footer-col a{font-size:.88rem;color:#a9bccb}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:20px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:.82rem;color:#8fa5b6;
}
.footer-bottom a{color:#8fa5b6}
.footer-bottom a:hover{color:var(--accent)}

/* 返回顶部 */
.back-top{
  position:fixed;right:22px;bottom:22px;z-index:90;
  width:46px;height:46px;border-radius:50%;border:none;cursor:pointer;
  background:var(--gradient-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 20px rgba(15,43,61,.3);opacity:0;visibility:hidden;
  transition:opacity .3s,visibility .3s,transform .2s,background .2s;
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-3px);background:var(--gradient-accent);color:#1a1408}

/* 滚动动画 */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}

/* 响应式 */
@media (max-width:980px){
  .hero-slide .container{grid-template-columns:1fr}
  .hero-visual{display:none}
  .brand-grid{grid-template-columns:1fr}
  .brand-visual{order:-1}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .main-nav{
    display:none;position:absolute;top:var(--header-h);left:0;right:0;
    background:var(--glass);
    -webkit-backdrop-filter:blur(16px) saturate(160%);
    backdrop-filter:blur(16px) saturate(160%);
    border-bottom:1px solid var(--glass-border);
    box-shadow:var(--shadow);padding:12px 4%;
  }
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:2px}
  .main-nav a{padding:12px 14px}
  .menu-toggle{display:flex}
  .search-box{display:none}
  .hero-slides{min-height:480px}
  .hero-slide{padding:32px 0}
  .brand-stats{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:40px 0}
  .solution-item{grid-template-columns:1fr}
  .back-top{right:14px;bottom:14px;width:42px;height:42px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}