/* ============================================================
   北京旭日神州科技有限公司 - 主样式表
   色系：深墨青 #0d3b3c + 旭日橙 #e66a26
   ============================================================ */
:root{
  /* 原有主色系 */
  --color-primary:#0d3b3c;--color-primary-light:#1a4a4a;--color-primary-lighter:#2a5f5f;--color-primary-bg:#0a2e2f;--color-accent:#e66a26;--color-accent-dark:#d45a1a;--color-accent-light:#f08a4a;--color-text:#333;--color-text-light:#666;--color-text-lighter:#999;--color-bg:#fff;--color-bg-gray:#f5f5f5;--color-border:#e5e5e5;--color-border-light:#eee;--color-white:#fff;--color-success:#28a745;--color-danger:#dc3545;--shadow-sm:0 2px 8px rgba(13,59,60,.08);--shadow-md:0 4px 16px rgba(13,59,60,.12);--shadow-lg:0 8px 32px rgba(13,59,60,.16);--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--transition:all .3s cubic-bezier(.4,0,.2,1);--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--max-width:1280px;

  /* 墨青色阶（业务页面使用） */
  --teal-50:#f0f7f7;--teal-100:#d6eaea;--teal-200:#adcaca;--teal-300:#7aaaaa;--teal-400:#4a8a8a;--teal-500:#2a6f6f;--teal-600:#1a5354;--teal-700:#144041;--teal-800:#0d3b3c;--teal-900:#0a2e2f;
  /* 橙色色阶 */
  --orange-50:#fef3ec;--orange-100:#fde0cc;--orange-200:#fbc199;--orange-300:#f9a266;--orange-400:#f08a4a;--orange-500:#e66a26;--orange-600:#d45a1a;--orange-700:#b04a15;
  /* 灰色色阶 */
  --gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-300:#d1d5db;--gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;--gray-800:#1f2937;--gray-900:#111827;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-sans);font-size:16px;line-height:1.7;color:var(--color-text);background:var(--color-bg);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--color-accent)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--color-primary)}
h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.2rem}
p{margin-bottom:1rem}
input,textarea,select,button{font-family:inherit;font-size:inherit}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}

/* ===== 区块通用 ===== */
.section{padding:100px 0}
.section-gray{background:var(--color-bg-gray)}
.section-title{text-align:center;margin-bottom:56px}
.section-title h2{font-size:2.2rem;margin-bottom:16px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:4px;background:linear-gradient(90deg,var(--color-accent),var(--color-accent-light));margin:16px auto 0;border-radius:2px}
.section-title p{color:var(--color-text-light);font-size:1.1rem;max-width:700px;margin:0 auto}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 32px;border-radius:var(--radius-md);font-weight:600;font-size:1rem;cursor:pointer;border:2px solid transparent;transition:var(--transition);text-align:center;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--color-accent),var(--color-accent-dark));color:var(--color-white);border-color:var(--color-accent)}
.btn-primary:hover{background:var(--color-accent-dark);color:var(--color-white);transform:translateY(-2px);box-shadow:0 6px 20px rgba(230,106,38,.4)}
.btn-outline{background:transparent;color:var(--color-white);border-color:rgba(255,255,255,.5)}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:var(--color-white);color:var(--color-white)}
.btn-outline-dark{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}
.btn-outline-dark:hover{background:var(--color-primary);color:var(--color-white)}
.btn-lg{padding:16px 40px;font-size:1.1rem}
.btn-sm{padding:8px 20px;font-size:.9rem}

/* ===== 顶部通知栏 ===== */
.top-bar{background:var(--color-primary-bg);color:rgba(255,255,255,.7);font-size:.85rem;padding:8px 0}
.top-bar-inner{display:flex;align-items:center;gap:24px}
.top-bar-info{display:flex;align-items:center;gap:6px}
.top-bar-info svg{flex-shrink:0}
.top-bar-right{margin-left:auto}

/* ===== 主导航 ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.98);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:var(--shadow-sm);transition:var(--transition)}
.site-header.scrolled{box-shadow:var(--shadow-md)}
.site-header.scrolled .header-inner{height:70px}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:80px;transition:height .3s ease}
.logo img{height:48px;width:auto;transition:height .3s ease}
.main-nav ul{display:flex;align-items:center;gap:8px}
.main-nav .nav-link{display:block;padding:14px 20px;font-weight:500;color:var(--color-text);font-size:1rem;border-radius:var(--radius-sm)}
.main-nav .nav-link:hover,.main-nav .nav-link.active{color:var(--color-accent);background:rgba(230,106,38,.06)}
.main-nav .nav-cta{background:linear-gradient(135deg,var(--color-accent),var(--color-accent-dark));color:var(--color-white)!important;padding:10px 24px;border-radius:var(--radius-md)}
.main-nav .nav-cta:hover{background:var(--color-accent-dark);transform:translateY(-1px)}

/* 简单下拉（案例中心等） */
.has-dropdown{position:relative}
.has-dropdown>.nav-link::after{content:'';display:inline-block;width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;margin-left:6px;vertical-align:middle}
.dropdown{position:absolute;top:100%;left:0;min-width:220px;background:var(--color-white);border-radius:0 0 var(--radius-md) var(--radius-md);box-shadow:var(--shadow-lg);padding:8px 0;opacity:0;visibility:hidden;transform:translateY(10px);transition:var(--transition);z-index:1000}
.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown li a{display:block;padding:10px 20px;color:var(--color-text);font-size:.9rem;transition:var(--transition)}
.dropdown li a:hover{background:var(--color-bg-gray);color:var(--color-accent);padding-left:24px}

/* ===== Mega Menu 大型下拉菜单 ===== */
.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);width:720px;background:#fff;border-radius:0 0 16px 16px;box-shadow:0 12px 40px rgba(0,0,0,.15);padding:32px;opacity:0;visibility:hidden;transition:all .3s ease;z-index:1000;display:grid;grid-template-columns:1fr 1fr;gap:24px}
.has-dropdown:hover .mega-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-menu-col h4{font-size:.8rem;color:var(--orange-500);text-transform:uppercase;letter-spacing:1px;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--gray-100);font-weight:700}
.mega-menu-item{display:flex;gap:12px;padding:12px;border-radius:8px;transition:background .2s;align-items:flex-start}
.mega-menu-item:hover{background:var(--gray-50)}
.mega-menu-item .mm-icon{width:36px;height:36px;border-radius:8px;background:var(--teal-50);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}
.mega-menu-item .mm-text h5{font-size:.95rem;margin-bottom:2px;color:var(--gray-800);font-weight:600}
.mega-menu-item .mm-text p{font-size:.8rem;color:var(--gray-500);margin:0}

.header-spacer{height:80px;background:var(--color-primary-bg);margin-top:-80px;position:relative;z-index:-1}
.mobile-menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.mobile-menu-btn span{display:block;width:24px;height:2px;background:var(--color-primary);transition:var(--transition)}

/* ===== Hero 全屏轮播 ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;background:linear-gradient(135deg,var(--color-primary-bg) 0%,var(--color-primary) 50%,var(--color-primary-light) 100%);overflow:hidden;color:var(--color-white)}
.hero-slider{position:absolute!important;inset:0!important;z-index:0!important}
.hero-slide{position:absolute!important;inset:0!important;background-size:cover!important;background-position:center!important;opacity:0;transition:opacity 1.5s ease}
.hero-slide.active{opacity:1}
.hero-overlay{position:absolute!important;inset:0!important;background:linear-gradient(135deg,rgba(13,59,60,.85),rgba(13,59,60,.6));z-index:1!important}
.hero-content{position:relative!important;z-index:2!important;max-width:900px!important;margin:0 auto!important;text-align:center!important;color:#fff;padding:0 24px}
.hero-panel{display:none}
.hero-panel.active{display:block;animation:heroFade .9s ease}
@keyframes heroFade{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(230,106,38,.15);border:1px solid rgba(230,106,38,.4);padding:6px 16px;border-radius:30px;font-size:.9rem;margin-bottom:24px}
.hero-badge::before{content:'';width:8px;height:8px;background:var(--color-accent);border-radius:50%;animation:pulse 2s infinite}
.hero-badge .dot{width:8px;height:8px;background:var(--color-accent);border-radius:50%;display:inline-block;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{color:var(--color-white);font-size:3.5rem;font-weight:800;margin-bottom:20px;line-height:1.2;text-align:center}
.hero h1 .highlight{color:var(--color-accent-light)}
.hero h1 .accent{color:var(--color-accent-light)}
.hero p{font-size:1.2rem;color:rgba(255,255,255,.8);margin-bottom:36px;line-height:1.8}
.hero-subtitle{font-size:1.25rem;max-width:700px;margin:0 auto 36px;text-align:center;line-height:1.8}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin-bottom:48px}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:60px;padding-top:40px;border-top:1px solid rgba(255,255,255,.15);justify-content:center}
.hero-stat .number,.hero-stat .num{font-size:2.8rem;font-weight:800;color:var(--color-accent-light);line-height:1}
.hero-stat .label{font-size:.95rem;color:rgba(255,255,255,.7);margin-top:8px}
.hero-dots{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.hero-dots .dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:all .3s;border:none;padding:0}
.hero-dots .dot.active{background:var(--color-accent);width:32px;border-radius:6px}

/* Hero 粒子（兼容旧版） */
.hero-particles{position:absolute;inset:0;overflow:hidden;z-index:1}
.hero-particle{position:absolute;width:4px;height:4px;background:rgba(230,106,38,.4);border-radius:50%;animation:floatUp 15s linear infinite}
@keyframes floatUp{0%{transform:translateY(100vh) scale(0);opacity:0}10%{opacity:1}90%{opacity:1}100%{transform:translateY(-100px) scale(1);opacity:0}}

/* ===== 数据统计条 ===== */
.stats-bar{background:var(--color-white);padding:48px 0;box-shadow:var(--shadow-md);position:relative;z-index:10;margin-top:-40px;border-radius:var(--radius-xl);max-width:1100px;margin-left:auto;margin-right:auto}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item .stat-number,.stat-item .num{font-size:2.8rem;font-weight:800;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-item .label{color:var(--color-text-light);font-size:1rem;margin-top:8px}

/* ===== 卡片 ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.card-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{background:var(--color-white);border-radius:16px;padding:36px;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:var(--transition);border:1px solid var(--gray-100)}
.card:hover{transform:translateY(-8px);box-shadow:0 16px 40px rgba(13,59,60,.15);border-color:var(--color-accent)}
.card-icon{width:64px;height:64px;border-radius:var(--radius-md);background:linear-gradient(135deg,rgba(13,59,60,.08),rgba(230,106,38,.08));display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--color-accent);font-size:1.8rem}
.card h3{font-size:1.3rem;margin-bottom:12px}
.card p{color:var(--color-text-light);font-size:.95rem;margin-bottom:0}
.card-link{display:inline-flex;align-items:center;gap:6px;color:var(--color-accent);font-weight:600;font-size:.9rem;margin-top:16px}
.card-link:hover{gap:10px}

/* 卡片顶部图片 */
.card-img{width:calc(100% + 72px);height:180px;object-fit:cover;border-radius:16px 16px 0 0;margin:-36px -36px 20px}
.service-card .card-img{margin:-28px -28px 16px;width:calc(100% + 56px);height:150px;object-fit:cover;border-radius:16px 16px 0 0}

/* ===== 案例卡片 ===== */
.case-card{background:var(--color-white);border-radius:16px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:var(--transition);border:1px solid var(--gray-100)}
.case-card:hover{transform:translateY(-8px);box-shadow:0 16px 40px rgba(13,59,60,.15)}
.case-card-image{height:200px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.3);font-size:3rem;position:relative;overflow:hidden}
.case-card-image::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,transparent 40%,rgba(230,106,38,.2))}
.case-card-body{padding:24px}
.case-card-tag{display:inline-block;padding:4px 12px;background:rgba(230,106,38,.1);color:var(--color-accent);border-radius:20px;font-size:.8rem;font-weight:600;margin-bottom:12px}
.case-card h3{font-size:1.15rem;margin-bottom:10px}
.case-card p{color:var(--color-text-light);font-size:.9rem;margin-bottom:0}
.case-card-meta{display:flex;gap:16px;margin-top:16px;padding-top:16px;border-top:1px solid var(--gray-100)}
.case-card-meta span{font-size:.85rem;color:var(--color-text-lighter)}

/* 案例缩略图（图片版） */
.case-thumb{height:200px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;border-radius:16px 16px 0 0;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light))}
.case-thumb img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.case-thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(13,59,60,.55),rgba(13,59,60,.15));z-index:1}
.case-tag{position:absolute;top:16px;left:16px;background:rgba(255,255,255,.9);color:var(--color-primary);padding:4px 12px;border-radius:20px;font-size:.8rem;font-weight:600;z-index:2}
.case-logo-text{font-size:2rem;font-weight:800;color:rgba(255,255,255,.9);letter-spacing:2px;position:relative;z-index:2;text-shadow:0 2px 8px rgba(0,0,0,.3)}

/* ===== 新闻卡片 ===== */
.news-card{background:var(--color-white);border-radius:16px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:var(--transition);border:1px solid var(--gray-100);display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.news-card-image{height:180px;background:linear-gradient(135deg,var(--color-primary-light),var(--color-primary));display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.3);font-size:2.5rem}
.news-card-body{padding:24px;flex:1;display:flex;flex-direction:column}
.news-card-date{color:var(--color-text-lighter);font-size:.85rem;margin-bottom:8px}
.news-card h3{font-size:1.1rem;margin-bottom:10px;flex:1}
.news-card p{color:var(--color-text-light);font-size:.9rem}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-date{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));color:#fff;border-radius:16px 16px 0 0}
.news-date .day{font-size:2rem;font-weight:800;line-height:1}
.news-date .ym{font-size:.8rem;opacity:.8;margin-top:4px}
.news-category{margin-top:8px;font-size:.75rem;background:rgba(255,255,255,.2);padding:2px 10px;border-radius:10px}
.news-body{padding:24px}
.news-body h3{font-size:1.05rem;margin-bottom:8px}
.news-body p{color:var(--color-text-light);font-size:.9rem;margin-bottom:0}

/* ===== 面包屑 & 页头 ===== */
.breadcrumb{background:var(--color-bg-gray);padding:16px 0;font-size:.9rem}
.breadcrumb ol{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li::after{content:'/';color:var(--color-text-lighter)}
.breadcrumb li:last-child::after{display:none}
.breadcrumb .current{color:var(--color-text-light)}
.page-banner{background:linear-gradient(135deg,var(--color-primary-bg),var(--color-primary-light));padding:100px 0;color:var(--color-white);text-align:center;position:relative;overflow:hidden}
.page-banner::before{content:'';position:absolute;top:0;right:0;width:50%;height:100%;background:radial-gradient(circle at 70% 50%,rgba(230,106,38,.2),transparent 60%)}
.page-banner h1{color:var(--color-white);font-size:2.5rem;margin-bottom:12px;position:relative}
.page-banner p{color:rgba(255,255,255,.8);font-size:1.1rem;position:relative}
.page-banner .breadcrumb{background:transparent;padding:0 0 20px;font-size:.9rem}
.page-banner .breadcrumb a{color:rgba(255,255,255,.85)}
.page-banner .breadcrumb a:hover{color:var(--color-accent-light)}
.page-banner .breadcrumb .current{color:#fff}
.page-banner .breadcrumb li::after{color:rgba(255,255,255,.5)}

/* ===== 表单 ===== */
.form-group{margin-bottom:20px}
.form-group label{display:block;font-weight:600;margin-bottom:8px;color:var(--color-text)}
.form-group label .required{color:var(--color-danger)}
.form-control{width:100%;padding:12px 16px;border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:1rem;transition:var(--transition);background:var(--color-white)}
.form-control:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px rgba(230,106,38,.15)}
textarea.form-control{resize:vertical;min-height:120px}

/* ===== CTA ===== */
.cta-section{background:linear-gradient(135deg,var(--color-primary-bg),var(--color-primary));padding:80px 0;text-align:center;color:var(--color-white);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 50%,rgba(230,106,38,.15),transparent 50%)}
.cta-content{position:relative}
.cta-section h2{color:var(--color-white);font-size:2rem;margin-bottom:12px}
.cta-section p{color:rgba(255,255,255,.8);font-size:1.1rem;margin-bottom:32px}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{background:var(--color-primary-bg);color:rgba(255,255,255,.7);padding:64px 0 0;position:relative;overflow:hidden}
.site-footer::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--orange-500),var(--orange-300),var(--teal-500))}
.site-footer::after{content:'';position:absolute;top:-100px;right:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(230,106,38,.06),transparent 70%);pointer-events:none}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;position:relative;z-index:1}
.footer-logo{margin-bottom:16px;filter:brightness(0) invert(1);opacity:.9}
.footer-slogan{color:var(--color-accent-light);font-weight:600;margin-bottom:12px}
.footer-desc{font-size:.9rem;line-height:1.8;margin-bottom:20px}
.footer-certs{display:flex;flex-wrap:wrap;gap:8px}
.footer-certs span{padding:4px 10px;border:1px solid rgba(255,255,255,.2);border-radius:var(--radius-sm);font-size:.75rem}
.footer-col h4{color:var(--color-white);font-size:1.05rem;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--orange-500)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:rgba(255,255,255,.6);font-size:.9rem}
.footer-col ul li a:hover{color:var(--color-accent-light);padding-left:4px}
.contact-list li{display:flex;align-items:flex-start;gap:10px;margin-bottom:14px;font-size:.9rem}
.contact-list svg{flex-shrink:0;margin-top:4px;color:var(--color-accent-light);background:rgba(230,106,38,.12);padding:6px;border-radius:8px;width:28px;height:28px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:24px 0;display:flex;justify-content:space-between;align-items:center;font-size:.85rem;flex-wrap:wrap;gap:12px;position:relative;z-index:1}
.footer-links a{color:rgba(255,255,255,.6)}
.footer-links a:hover{color:var(--color-accent-light)}

/* 微信二维码占位 */
.footer-qr{margin-top:16px;display:flex;align-items:center;gap:12px}
.footer-qr-img{width:80px;height:80px;background:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:.7rem;color:#999;flex-shrink:0;background-image:repeating-linear-gradient(45deg,#f0f0f0 0,#f0f0f0 4px,#fff 4px,#fff 8px)}
.footer-qr-text{font-size:.8rem;color:rgba(255,255,255,.6)}

/* ===== 返回顶部 ===== */
.back-to-top{position:fixed;bottom:32px;right:32px;width:48px;height:48px;background:var(--color-primary);color:var(--color-white);border:none;border-radius:50%;cursor:pointer;box-shadow:var(--shadow-md);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(20px);transition:var(--transition);z-index:999}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--color-accent)}

/* ===== 分页 ===== */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:40px}
.page-link{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-text);font-size:.9rem;transition:var(--transition)}
.page-link:hover,.page-link.active{background:var(--color-accent);color:var(--color-white);border-color:var(--color-accent)}

/* ===== 标签 ===== */
.tag{display:inline-block;padding:4px 12px;border-radius:20px;font-size:.8rem;font-weight:600}
.tag-primary{background:rgba(13,59,60,.1);color:var(--color-primary)}
.tag-accent{background:rgba(230,106,38,.1);color:var(--color-accent)}

/* ===== 文章内容 ===== */
.article-content{line-height:1.9;font-size:1.05rem}
.article-content h2{margin:32px 0 16px;padding-bottom:12px;border-bottom:2px solid var(--color-bg-gray)}
.article-content h3{margin:24px 0 12px}
.article-content p{margin-bottom:16px}
.article-content ul,.article-content ol{margin:16px 0;padding-left:24px}
.article-content ul li{list-style:disc;margin-bottom:8px}
.article-content ol li{list-style:decimal;margin-bottom:8px}
.article-content blockquote{border-left:4px solid var(--color-accent);padding:16px 24px;background:var(--color-bg-gray);margin:20px 0;border-radius:0 var(--radius-md) var(--radius-md) 0}
.article-content table{width:100%;border-collapse:collapse;margin:20px 0}
.article-content th,.article-content td{padding:12px 16px;border:1px solid var(--color-border);text-align:left}
.article-content th{background:var(--color-bg-gray);font-weight:600}

/* ===== 时间线 ===== */
.timeline{position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:12px;top:0;bottom:0;width:2px;background:linear-gradient(to bottom,var(--color-accent),var(--color-primary))}
.timeline-item{position:relative;margin-bottom:32px}
.timeline-item::before{content:'';position:absolute;left:-34px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--color-accent);border:3px solid var(--color-white);box-shadow:0 0 0 2px var(--color-accent)}
.timeline-item .year{font-weight:800;color:var(--color-accent);font-size:1.2rem}
.timeline-item h4{margin:8px 0}
.timeline-item p{color:var(--color-text-light);margin-bottom:0}

/* ===== 步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;position:relative}
.step{text-align:center;padding:24px 16px;background:var(--color-white);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border-top:3px solid var(--color-accent);position:relative}
.step-number{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--color-accent),var(--color-accent-dark));color:var(--color-white);display:flex;align-items:center;justify-content:center;font-weight:800;margin:0 auto 12px}
.step h4{font-size:1rem;margin-bottom:6px}
.step p{font-size:.85rem;color:var(--color-text-light);margin-bottom:0}

/* 新版流程步骤（业务页面使用） */
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.process-step{text-align:center;padding:24px 16px;background:#fff;border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,.06);border-top:3px solid var(--orange-500)}
.step-num{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--orange-500),var(--orange-600));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin:0 auto 12px}

/* ===== 客户logo ===== */
.client-logos{display:grid;grid-template-columns:repeat(7,1fr);gap:24px;align-items:center}
.client-logo-item{background:var(--color-white);padding:20px;border-radius:var(--radius-md);text-align:center;font-weight:700;color:var(--color-text-lighter);font-size:.95rem;border:1px solid var(--color-border-light);transition:var(--transition)}
.client-logo-item:hover{color:var(--color-primary);border-color:var(--color-accent);box-shadow:var(--shadow-sm)}

/* ===== 优势 ===== */
.advantage-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.advantage-item{display:flex;gap:16px;padding:24px;background:var(--color-white);border-radius:var(--radius-md);border:1px solid var(--color-border-light);transition:var(--transition)}
.advantage-item:hover{border-color:var(--color-accent);box-shadow:var(--shadow-sm)}
.advantage-icon{flex-shrink:0;width:48px;height:48px;border-radius:var(--radius-md);background:linear-gradient(135deg,rgba(230,106,38,.1),rgba(13,59,60,.08));display:flex;align-items:center;justify-content:center;color:var(--color-accent);font-size:1.4rem}
.advantage-item h4{margin-bottom:6px;font-size:1.05rem}
.advantage-item p{font-size:.9rem;color:var(--color-text-light);margin-bottom:0}

/* ===== 错误页 ===== */
.error-page{text-align:center;padding:120px 0}
.error-code{font-size:8rem;font-weight:900;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.error-page h2{margin:20px 0}
.error-page p{color:var(--color-text-light);margin-bottom:32px}

/* ===== 搜索 ===== */
.search-result-item{padding:24px 0;border-bottom:1px solid var(--color-border-light)}
.search-result-item h3{margin-bottom:8px}
.search-result-item p{color:var(--color-text-light);font-size:.95rem}
.search-result-item .result-type{display:inline-block;padding:2px 10px;background:var(--color-bg-gray);border-radius:12px;font-size:.8rem;color:var(--color-text-light);margin-bottom:8px}

/* ===== 筛选 ===== */
.filter-bar{display:flex;gap:12px;margin-bottom:32px;flex-wrap:wrap}
.filter-btn{padding:8px 24px;border:1px solid var(--color-border);border-radius:30px;background:var(--color-white);color:var(--color-text);cursor:pointer;font-size:.9rem;transition:var(--transition)}
.filter-btn:hover,.filter-btn.active{background:var(--color-accent);color:var(--color-white);border-color:var(--color-accent)}

/* ===== 详情页布局 ===== */
.detail-layout{display:grid;grid-template-columns:1fr 300px;gap:40px}
.detail-sidebar{position:sticky;top:100px;align-self:start}
.sidebar-widget{background:var(--color-white);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-sm);margin-bottom:24px;border:1px solid var(--color-border-light)}
.sidebar-widget h4{margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--color-bg-gray)}
.sidebar-widget ul li{margin-bottom:10px}
.sidebar-widget ul li a{font-size:.9rem;color:var(--color-text-light)}
.sidebar-widget ul li a:hover{color:var(--color-accent)}

/* ===== 侧栏导航（业务页面） ===== */
.page-layout{display:grid;grid-template-columns:260px 1fr;gap:40px;padding:64px 0}
.sidebar-nav{position:sticky;top:100px;align-self:start;background:#fff;border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,.06);padding:8px 0;border:1px solid var(--gray-100)}
.sidebar-nav h4{font-size:.85rem;color:#fff;background:linear-gradient(135deg,var(--teal-700),var(--teal-800));padding:14px 20px;margin:0;border-radius:12px 12px 0 0;letter-spacing:1px}
.sidebar-nav ul li a{display:block;padding:12px 20px;color:var(--gray-600);font-size:.92rem;transition:all .2s;border-left:3px solid transparent}
.sidebar-nav ul li a:hover{color:var(--orange-500);background:var(--orange-50)}
.sidebar-nav ul li.active a{color:var(--orange-600);background:var(--orange-50);border-left-color:var(--orange-500);font-weight:600}

/* ===== 内容页正文 ===== */
.page-content h2{font-size:1.6rem;margin:40px 0 20px;padding-bottom:12px;border-bottom:2px solid var(--gray-100);color:var(--teal-800)}
.page-content h3{font-size:1.25rem;margin:28px 0 14px;color:var(--teal-700)}
.page-content p{color:var(--gray-700);margin-bottom:16px}
.page-content ul{margin:16px 0}
.page-content ul li{padding:8px 0 8px 24px;position:relative;color:var(--gray-700)}
.page-content ul li::before{content:'';position:absolute;left:6px;top:16px;width:8px;height:8px;border-radius:50%;background:var(--orange-500)}

/* ===== 功能网格（业务页面） ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.fi-icon{width:48px;height:48px;border-radius:10px;background:linear-gradient(135deg,rgba(13,59,60,.08),rgba(230,106,38,.1));display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:14px}

/* ===== 技术标签 ===== */
.tech-tags{display:flex;flex-wrap:wrap;gap:10px}
.tech-tag{padding:6px 16px;background:var(--teal-50);color:var(--teal-700);border-radius:20px;font-size:.85rem;font-weight:500;border:1px solid var(--teal-100);transition:all .2s;cursor:default}
.tech-tag:hover{background:var(--orange-500);color:#fff;border-color:var(--orange-500)}

/* ===== 职位卡片 ===== */
.job-card{background:var(--color-white);border-radius:var(--radius-md);padding:24px;border:1px solid var(--color-border-light);transition:var(--transition);margin-bottom:16px}
.job-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-sm)}
.job-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}
.job-card h4{margin-bottom:4px}
.job-card .job-meta{display:flex;gap:16px;font-size:.85rem;color:var(--color-text-light)}
.job-card .job-tags{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}

/* ===== 区块标题（新版） ===== */
.section-header{text-align:center;margin-bottom:56px}
.section-header h2{font-size:2.5rem;margin-bottom:16px;position:relative;display:inline-block}
.section-header p{color:var(--color-text-light);max-width:700px;margin:0 auto;font-size:1.05rem}
.section-tag{display:inline-flex;align-items:center;gap:10px;color:var(--color-accent);font-size:.85rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;margin-bottom:12px}
.section-tag::before,.section-tag::after{content:'';width:24px;height:2px;background:var(--orange-300);border-radius:1px}
.section-dark{background:linear-gradient(135deg,var(--color-primary-bg),var(--color-primary));color:#fff}
.section-dark h2{color:#fff}
.section-dark p{color:rgba(255,255,255,.7)}
.section-dark .section-tag{color:var(--color-accent-light)!important}
.section-dark .section-tag::before,.section-dark .section-tag::after{background:var(--orange-400)}
.section-alt{background:var(--color-bg-gray)}
.highlight{color:var(--color-accent-light)}

/* ===== 服务网格 ===== */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card{display:block;transition:var(--transition);padding:28px}
.service-card:hover{transform:translateY(-8px);box-shadow:0 16px 40px rgba(13,59,60,.15);border-color:var(--color-accent)}
.service-icon{width:56px;height:56px;border-radius:var(--radius-md);background:linear-gradient(135deg,rgba(13,59,60,.08),rgba(230,106,38,.08));display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:16px}
.service-link{display:inline-flex;align-items:center;gap:6px;color:var(--color-accent);font-weight:600;font-size:.9rem;margin-top:16px}
.service-link:hover{gap:10px}
.service-card .service-icon{background:linear-gradient(135deg,rgba(13,59,60,.08),rgba(230,106,38,.08))}

/* ===== 按钮补充 ===== */
.btn-secondary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}
.btn-secondary:hover{background:var(--color-primary-light);color:#fff}
.btn-outline-teal{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}
.btn-outline-teal:hover{background:var(--color-primary);color:#fff}

/* ===== 特性项 ===== */
.feature-item{background:#fff;border-radius:var(--radius-md);padding:24px;border:1px solid var(--color-border-light);transition:var(--transition)}
.feature-item:hover{border-color:var(--color-accent);box-shadow:var(--shadow-sm)}

/* ===== 案例网格 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}

/* ===== 关于我们图片组合 ===== */
.about-img-grid{position:relative}
.about-img-main{border-radius:16px;overflow:hidden;box-shadow:0 12px 40px rgba(13,59,60,.15)}
.about-img-main img{width:100%;height:380px;object-fit:cover}
.about-img-float{position:absolute;bottom:-30px;right:-20px;width:200px;border-radius:12px;overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,.2);border:4px solid #fff}
.about-img-float img{width:100%;height:140px;object-fit:cover}

/* ===== 滚动淡入动画 ===== */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .8s ease,transform .8s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-left{opacity:0;transform:translateX(-40px);transition:opacity .8s ease,transform .8s ease}
.reveal-left.visible{opacity:1;transform:translateX(0)}
.reveal-right{opacity:0;transform:translateX(40px);transition:opacity .8s ease,transform .8s ease}
.reveal-right.visible{opacity:1;transform:translateX(0)}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .card-grid,.card-grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(3,1fr)}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .client-logos{grid-template-columns:repeat(4,1fr)}
  .detail-layout{grid-template-columns:1fr}
  .detail-sidebar{position:static}
  .mega-menu{width:600px;padding:24px}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .page-layout{grid-template-columns:1fr}
  .sidebar-nav{position:static}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  h1{font-size:1.8rem}h2{font-size:1.5rem}
  .section{padding:60px 0}
  .hero{min-height:600px}
  .hero h1{font-size:2rem}
  .hero-subtitle{font-size:1rem}
  .hero-content{padding:0 20px}
  .card-grid,.card-grid-2,.card-grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .main-nav{position:fixed;top:80px;left:0;right:0;background:var(--color-white);box-shadow:var(--shadow-lg);padding:16px;display:none;max-height:calc(100vh - 80px);overflow-y:auto}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:0}
  .main-nav .nav-link{padding:14px 16px}
  .dropdown,.mega-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;display:block;padding-left:20px;width:100%}
  .has-dropdown:hover .dropdown,.has-dropdown:hover .mega-menu{transform:none}
  .mega-menu-col{margin-bottom:16px}
  .mega-menu-col h4{font-size:.9rem}
  .has-dropdown>.nav-link::after{display:none}
  .mobile-menu-btn{display:flex}
  .top-bar-right{display:none}
  .steps{grid-template-columns:repeat(2,1fr)}
  .client-logos{grid-template-columns:repeat(3,1fr)}
  .advantage-list{grid-template-columns:1fr}
  .hero-stats{gap:20px}
  .hero-stat .number,.hero-stat .num{font-size:1.8rem}
  .stats-bar{margin-top:-20px;padding:32px 0}
  .footer-bottom{flex-direction:column;text-align:center}
  .section-header h2{font-size:1.8rem}
  .header-inner{height:70px}
  .site-header.scrolled .header-inner{height:60px}
  .logo img{height:40px}
  .card-img{height:160px;margin:-24px -24px 16px;width:calc(100% + 48px)}
  .service-card{padding:24px}
  .service-card .card-img{height:140px;margin:-24px -24px 16px;width:calc(100% + 48px)}
  .process-steps{grid-template-columns:1fr 1fr}
  .feature-grid{grid-template-columns:1fr}
  .about-img-float{position:static;width:100%;margin-top:16px}
  .about-img-main img{height:260px}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .hero-stats,.stats-grid{grid-template-columns:1fr 1fr}
  .client-logos{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .hero{min-height:500px}
  .hero h1{font-size:1.6rem}
  .process-steps{grid-template-columns:1fr}
}

/* ===== v4 新增样式 ===== */
.service-overview-card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(13,59,60,.15)!important;border-color:var(--orange-200)!important}
.service-overview-card:hover h3{color:var(--orange-600)}
.cert-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(13,59,60,.12)!important}
.copyright-item:hover{transform:translateX(4px);box-shadow:0 4px 16px rgba(13,59,60,.1)!important;border-color:var(--orange-200)!important}
.service-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:40px;padding:16px 20px;background:#fff;border-radius:12px;box-shadow:var(--shadow-sm);border:1px solid var(--gray-100)}
.service-tab{padding:8px 18px;border-radius:8px;font-size:.9rem;font-weight:500;color:var(--gray-600);background:var(--gray-50);transition:all .2s;text-decoration:none}
.service-tab:hover{background:var(--orange-50);color:var(--orange-600)}
.service-tab.active{background:linear-gradient(135deg,var(--teal-700),var(--teal-800));color:#fff}
.data-dashboard{background:linear-gradient(135deg,#0a1628,#1a2f4a);border-radius:16px;padding:32px;color:#fff;position:relative;overflow:hidden}
.data-dashboard::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--orange-400),var(--teal-400),var(--orange-400))}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.data-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:20px;text-align:center}
.data-item .num{font-size:1.8rem;font-weight:800;color:var(--orange-300)}
.data-item .label{font-size:.8rem;color:rgba(255,255,255,.6);margin-top:4px}
.monitor-panel{background:#0d1b2a;border-radius:16px;padding:28px;color:#fff;font-family:'Courier New',monospace}
.monitor-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.1)}
.monitor-status{display:inline-flex;align-items:center;gap:6px;font-size:.85rem}
.monitor-status .dot{width:8px;height:8px;border-radius:50%;background:#4ade80;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.monitor-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.monitor-metric{background:rgba(255,255,255,.03);border-radius:8px;padding:16px}
.monitor-metric .val{font-size:1.4rem;font-weight:700;color:var(--teal-300)}
.monitor-metric .name{font-size:.75rem;color:rgba(255,255,255,.5);margin-top:4px}
.ai-hero{background:linear-gradient(135deg,#0a0a1a,#1a1a3a);position:relative;overflow:hidden;border-radius:16px;padding:48px;color:#fff}
.ai-hero::before{content:'';position:absolute;inset:0;background-image:radial-gradient(circle at 20% 50%,rgba(230,106,38,.15),transparent 50%),radial-gradient(circle at 80% 20%,rgba(42,111,111,.2),transparent 50%)}
.neural-grid{position:absolute;inset:0;opacity:.1;background-image:linear-gradient(rgba(255,255,255,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.1) 1px,transparent 1px);background-size:40px 40px}
.cloud-topology{background:linear-gradient(135deg,#f0f7f7,#e0f0f0);border-radius:16px;padding:40px;position:relative}
.cloud-node{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;background:#fff;border-radius:10px;box-shadow:var(--shadow-sm);border:2px solid var(--teal-300);font-weight:600;color:var(--teal-700);font-size:.9rem}
.cloud-node.primary{border-color:var(--orange-400);background:linear-gradient(135deg,#fff,var(--orange-50))}
.test-pyramid{display:flex;flex-direction:column;align-items:center;gap:4px;max-width:500px;margin:0 auto}
.pyramid-layer{text-align:center;padding:16px;border-radius:8px;color:#fff;font-weight:600}
.pyramid-layer.unit{width:100%;background:linear-gradient(135deg,var(--teal-600),var(--teal-700))}
.pyramid-layer.integration{width:75%;background:linear-gradient(135deg,var(--teal-500),var(--teal-600))}
.pyramid-layer.e2e{width:50%;background:linear-gradient(135deg,var(--orange-400),var(--orange-500))}
.pyramid-layer.manual{width:25%;background:linear-gradient(135deg,var(--orange-500),var(--orange-600))}
.cases-stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:32px;background:linear-gradient(135deg,var(--teal-800),var(--teal-600));border-radius:16px;margin-bottom:48px;text-align:center}
.cases-stats-bar .num{font-size:2.2rem;font-weight:800;color:var(--orange-300)}
.cases-stats-bar .label{font-size:.9rem;color:rgba(255,255,255,.7);margin-top:4px}
.case-card-enhanced{background:#fff;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);transition:all .3s;position:relative}
.case-card-enhanced:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(13,59,60,.18)}
.case-card-enhanced .case-img-wrap{height:200px;overflow:hidden;position:relative}
.case-card-enhanced .case-img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-card-enhanced:hover .case-img-wrap img{transform:scale(1.08)}
.case-card-enhanced .case-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(13,59,60,.8));opacity:0;transition:opacity .3s;display:flex;align-items:flex-end;padding:20px}
.case-card-enhanced:hover .case-overlay{opacity:1}
.case-card-enhanced .client-badge{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.95);padding:6px 14px;border-radius:6px;font-size:.8rem;font-weight:600;color:var(--teal-700);backdrop-filter:blur(4px)}
@media(max-width:1024px){
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .cases-stats-bar{grid-template-columns:repeat(2,1fr)}
  .monitor-metrics{grid-template-columns:1fr}
}
@media(max-width:768px){
  .data-grid,.cases-stats-bar{grid-template-columns:1fr 1fr}
  .service-tabs{padding:12px}
  .service-tab{padding:6px 12px;font-size:.8rem}
}

/* ===== v7 新增：业务卡片交互效果 ===== */
.service-card-link{
  display:block;
  overflow:hidden;
  position:relative;
  text-decoration:none;
  color:inherit;
}
.service-card-link .card-img-wrap{
  position:relative;
  overflow:hidden;
  margin:-28px -28px 16px;
  width:calc(100% + 56px);
  height:150px;
  border-radius:16px 16px 0 0;
}
.service-card-link .card-img{
  width:100%;
  height:100%;
  object-fit:cover;
  margin:0;
  transition:transform .5s ease;
}
.service-card-link:hover .card-img{
  transform:scale(1.08);
}
.service-card-link .card-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(13,59,60,.6));
  opacity:0;
  transition:opacity .3s ease;
  display:flex;
  align-items:flex-end;
  padding:16px;
}
.service-card-link:hover .card-overlay{
  opacity:1;
}
.service-card-link .card-overlay-text{
  color:#fff;
  font-weight:600;
  font-size:.9rem;
  transform:translateY(10px);
  transition:transform .3s ease;
}
.service-card-link:hover .card-overlay-text{
  transform:translateY(0);
}
.service-card-link:hover{
  transform:translateY(-8px);
  box-shadow:0 16px 40px rgba(13,59,60,.18);
  border-color:var(--orange-400);
}
.service-card-link:hover .service-link{
  color:var(--orange-600);
  gap:10px;
}

/* 去掉导航栏和Hero之间的白色间隔 */
body.home-page .site-header{
  background:rgba(255,255,255,.95);
}
body.home-page .header-spacer{
  height:0;
  margin-top:0;
}
body.home-page .hero{
  margin-top:-80px;
  padding-top:80px;
  min-height:100vh;
}

/* ============================================================
   GEO 改造新增组件（2026-09）
   FAQ手风琴 / 服务流程步骤条 / 对比表格
   ============================================================ */

/* ===== FAQ 手风琴 ===== */
.geo-faq{margin-bottom:64px}
.geo-faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.geo-faq-item{background:#fff;border:1px solid var(--gray-100);border-radius:12px;overflow:hidden;transition:var(--transition);box-shadow:var(--shadow-sm)}
.geo-faq-item:hover{border-color:var(--teal-200);box-shadow:var(--shadow-md)}
.geo-faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:none;border:none;cursor:pointer;text-align:left;font-size:1.02rem;font-weight:600;color:var(--teal-800);font-family:inherit}
.geo-faq-q .geo-faq-icon{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--teal-50);color:var(--teal-700);display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:700;transition:transform .3s ease,background .3s ease}
.geo-faq-item.open .geo-faq-icon{transform:rotate(45deg);background:var(--orange-500);color:#fff}
.geo-faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 22px}
.geo-faq-item.open .geo-faq-a{max-height:400px}
.geo-faq-a-inner{padding:4px 0 20px;color:var(--color-text-light);font-size:.95rem;line-height:1.8;border-top:1px dashed var(--gray-100);padding-top:14px}

/* ===== 服务流程步骤条（横向卡片） ===== */
.geo-process{margin-bottom:64px}
.geo-process-track{display:grid;grid-template-columns:repeat(6,1fr);gap:0;position:relative}
.geo-step{position:relative;text-align:center;padding:0 10px}
.geo-step-num{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--teal-700),var(--teal-500));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.15rem;margin:0 auto 14px;box-shadow:0 4px 14px rgba(13,59,60,.25);position:relative;z-index:2}
.geo-step.highlight .geo-step-num{background:linear-gradient(135deg,var(--orange-500),var(--orange-600));box-shadow:0 4px 14px rgba(230,106,38,.3)}
.geo-step-time{display:inline-block;font-size:.75rem;font-weight:700;color:var(--orange-600);background:var(--orange-50);padding:2px 10px;border-radius:12px;margin-bottom:8px}
.geo-step h4{font-size:1rem;margin-bottom:6px}
.geo-step p{font-size:.85rem;color:var(--color-text-light);line-height:1.6;margin:0}
.geo-step::after{content:'';position:absolute;top:27px;left:calc(50% + 32px);width:calc(100% - 64px);height:2px;background:linear-gradient(90deg,var(--teal-200),var(--teal-100));z-index:1}
.geo-step:last-child::after{display:none}

/* ===== 对比表格（斑马纹） ===== */
.geo-compare{margin-bottom:64px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.geo-compare table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow-sm);min-width:640px}
.geo-compare thead th{background:linear-gradient(135deg,var(--teal-800),var(--teal-600));color:#fff;padding:16px 20px;text-align:left;font-size:.95rem;font-weight:600}
.geo-compare thead th:first-child{width:220px}
.geo-compare tbody td{padding:14px 20px;border-bottom:1px solid var(--gray-100);font-size:.92rem;color:var(--color-text);vertical-align:top}
.geo-compare tbody tr:nth-child(even){background:var(--gray-50)}
.geo-compare tbody tr:hover{background:var(--teal-50)}
.geo-compare tbody td:first-child{font-weight:600;color:var(--teal-800)}
.geo-compare .geo-check{color:var(--teal-600);font-weight:700}
.geo-compare .geo-cross{color:var(--gray-400)}
.geo-compare-caption{font-size:.85rem;color:var(--color-text-lighter);margin-top:10px;text-align:center}

/* ===== GEO 区块标题（统一） ===== */
.geo-section-head{text-align:center;margin-bottom:40px}
.geo-section-head .section-tag{margin-bottom:12px;display:inline-block}
.geo-section-head h2{margin-bottom:8px}
.geo-section-head p{color:var(--color-text-light);max-width:640px;margin:0 auto}

/* ===== 响应式 ===== */
@media (max-width: 992px){
  .geo-process-track{grid-template-columns:repeat(3,1fr);gap:28px 0}
  .geo-step::after{display:none}
}
@media (max-width: 640px){
  .geo-process-track{grid-template-columns:repeat(2,1fr);gap:24px 0}
  .geo-faq-q{font-size:.95rem;padding:16px 18px}
  .geo-faq-a{padding:0 18px}
  .geo-compare table{min-width:560px}
}

/* ============================================================
   v9 移动端深度优化（2026-09）
   修复内联样式grid在小屏的适配问题
   ============================================================ */

@media(max-width:768px){
  /* 关于我们 - 公司简介左右两列改为单列 */
  .section .container > div[style*="grid-template-columns:1fr 1fr"]{
    grid-template-columns:1fr !important;
    gap:32px !important;
  }
  /* 关于我们 - 企业文化三列改为单列 */
  .feature-grid,
  div[style*="grid-template-columns:repeat(3,1fr)"][style*="gap:24px"]{
    grid-template-columns:1fr !important;
  }
  /* 关于我们 - 服务覆盖5列改为2列 */
  div[style*="grid-template-columns:repeat(5,1fr)"][style*="gap:12px"]{
    grid-template-columns:repeat(2,1fr) !important;
  }
  /* 关于我们 - 服务覆盖3列优势改为单列 */
  div[style*="grid-template-columns:repeat(3,1fr)"][style*="gap:20px"]{
    grid-template-columns:1fr !important;
  }
  /* 关于我们 - 办公环境4列改为2列 */
  div[style*="grid-template-columns:repeat(4,1fr)"][style*="gap:16px"]{
    grid-template-columns:repeat(2,1fr) !important;
  }
  /* 发展历程时间线 - 调整内边距 */
  div[style*="position:relative;padding-left:40px"]{
    padding-left:28px !important;
  }
  /* 页脚信息两列改为单列 */
  .footer-grid{
    grid-template-columns:1fr !important;
  }
}

@media(max-width:480px){
  /* 超小屏进一步优化 */
  .section{padding:40px 0}
  .container{padding:0 16px}
  /* 服务覆盖城市改为2列 */
  div[style*="grid-template-columns:repeat(2,1fr)"][style*="gap:12px"]{
    grid-template-columns:repeat(2,1fr) !important;
    gap:8px !important;
  }
  div[style*="padding:10px;text-align:center"]{
    padding:8px !important;
    font-size:12px !important;
  }
  /* 发展历程卡片内边距减小 */
  div[style*="background:#fff;padding:20px 24px;border-radius:10px"]{
    padding:16px !important;
  }
  /* Hero标题进一步缩小 */
  .hero h1{font-size:1.4rem !important;line-height:1.4}
  .hero-subtitle{font-size:.9rem !important}
  /* 按钮大小调整 */
  .btn-lg{padding:12px 24px;font-size:.95rem}
}

/* 知识中心列表页 - 移动端侧边栏在下方 */
@media(max-width:992px){
  .kn-layout{
    grid-template-columns:1fr !important;
  }
  .kn-sidebar{
    order:2;
    margin-top:40px;
  }
}

/* ============================================================
   2026-09-22 首页改版：独立统计条 + 合作客户Logo墙
   ============================================================ */

/* ===== 首页独立统计条（Hero下方） ===== */
section.stats-bar{
  background:#fff;
  padding:0;
  border-bottom:1px solid var(--gray-100);
  position:relative;
  z-index:10;
  margin-top:0;
  max-width:none;
  border-radius:0;
  box-shadow:none;
}
.stats-bar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:36px 0;
  gap:0;
}
.stats-bar-item{
  flex:1;
  text-align:center;
  padding:0 16px;
}
.stats-bar-item .num{
  font-size:2.4rem;
  font-weight:800;
  line-height:1.1;
  margin-bottom:6px;
}
.stats-bar-item .num span{
  background:linear-gradient(135deg,var(--teal-800),var(--orange-500));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.stats-bar-item .label{
  font-size:.9rem;
  color:var(--gray-500);
  font-weight:500;
  letter-spacing:.5px;
}
.stats-bar-divider{
  width:1px;
  height:48px;
  background:linear-gradient(180deg,transparent,var(--gray-200),transparent);
  flex-shrink:0;
}

/* ===== 合作客户Logo墙 ===== */
.section-clients{
  background:linear-gradient(180deg,#fafbfc 0%,#fff 100%);
}
.client-logo-wall{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:0;
  border:1px solid var(--gray-100);
  border-radius:16px;
  overflow:hidden;
  background:#fff;
  box-shadow:0 4px 24px rgba(13,59,60,.06);
}
.client-logo-wall .client-logo-item{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding:32px 16px;
  min-height:110px;
  border-right:1px solid var(--gray-100);
  border-bottom:1px solid var(--gray-100);
  cursor:default;
  transition:all .35s cubic-bezier(.4,0,.2,1);
  position:relative;
  overflow:hidden;
  background:#fff;
  border-radius:0;
  font-size:inherit;
  color:inherit;
  font-weight:inherit;
  text-align:center;
}
.client-logo-wall .client-logo-item::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(230,106,38,.04),rgba(13,59,60,.03));
  opacity:0;
  transition:opacity .35s;
}
.client-logo-wall .client-logo-item:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(13,59,60,.1);
  z-index:2;
  border-color:var(--gray-100);
}
.client-logo-wall .client-logo-item:hover::before{
  opacity:1;
}
.client-logo-wall .client-logo-item:nth-child(5n){
  border-right:none;
}
.client-logo-wall .client-logo-item:nth-child(n+16){
  border-bottom:none;
}
.client-logo-text{
  font-size:1.15rem;
  font-weight:700;
  color:var(--gray-600);
  letter-spacing:1px;
  transition:color .3s;
  position:relative;
  z-index:1;
}
.client-logo-full{
  font-size:.7rem;
  color:var(--gray-400);
  letter-spacing:2px;
  text-transform:uppercase;
  margin-top:6px;
  font-weight:600;
  transition:color .3s;
  position:relative;
  z-index:1;
}
.client-logo-wall .client-logo-item:hover .client-logo-text{
  color:var(--orange-500);
}
.client-logo-wall .client-logo-item:hover .client-logo-full{
  color:var(--orange-400);
}
.client-logo-wall .client-logo-more{
  background:linear-gradient(135deg,var(--teal-800),var(--teal-700));
}
.client-logo-wall .client-logo-more .client-logo-text{
  color:#fff;
  font-size:1.4rem;
}
.client-logo-wall .client-logo-more .client-logo-full{
  color:rgba(255,255,255,.6);
}
.client-logo-wall .client-logo-more:hover{
  background:linear-gradient(135deg,var(--orange-500),var(--orange-600));
}
.client-logo-wall .client-logo-more:hover .client-logo-text{
  color:#fff;
}
.client-logo-wall .client-logo-more:hover .client-logo-full{
  color:rgba(255,255,255,.8);
}

/* 客户Logo图片样式 */
.client-logo-img{
  width:100px;
  height:50px;
  object-fit:contain;
  filter:grayscale(100%);
  opacity:.6;
  transition:all .35s cubic-bezier(.4,0,.2,1);
  position:relative;
  z-index:1;
}
.client-logo-wall .client-logo-item:hover .client-logo-img{
  filter:grayscale(0%);
  opacity:1;
  transform:scale(1.05);
}

/* 响应式：统计条 + Logo墙 */
@media(max-width:992px){
  .stats-bar-inner{
    flex-wrap:wrap;
    padding:28px 0;
  }
  .stats-bar-item{
    flex:0 0 50%;
    padding:16px;
  }
  .stats-bar-divider{
    display:none;
  }
  .client-logo-wall{
    grid-template-columns:repeat(3,1fr);
  }
  .client-logo-wall .client-logo-item:nth-child(5n){
    border-right:1px solid var(--gray-100);
  }
  .client-logo-wall .client-logo-item:nth-child(3n){
    border-right:none;
  }
  .client-logo-wall .client-logo-item:nth-child(n+16){
    border-bottom:1px solid var(--gray-100);
  }
  .client-logo-wall .client-logo-item:nth-child(n+19){
    border-bottom:none;
  }
}
@media(max-width:576px){
  .stats-bar-item .num{
    font-size:1.8rem;
  }
  .client-logo-wall{
    grid-template-columns:repeat(2,1fr);
  }
  .client-logo-wall .client-logo-item{
    padding:24px 12px;
    min-height:90px;
  }
  .client-logo-wall .client-logo-item:nth-child(3n){
    border-right:1px solid var(--gray-100);
  }
  .client-logo-wall .client-logo-item:nth-child(2n){
    border-right:none;
  }
  .client-logo-wall .client-logo-item:nth-child(n+19){
    border-bottom:1px solid var(--gray-100);
  }
  .client-logo-wall .client-logo-item:nth-child(n+19):nth-child(2n){
    border-bottom:none;
  }
  .client-logo-text{
    font-size:1rem;
  }
}

/* ============================================================
   增强动画效果 - 让网站更丝滑
   ============================================================ */

/* 全局平滑过渡 */
.card, .case-card, .news-card, .service-card, .advantage-item, .step, .solution-card {
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 卡片hover增强 */
.card:hover, .case-card:hover, .news-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(13, 59, 60, 0.15);
}

/* 卡片内图片缩放效果 */
.card img, .case-card img, .news-card img, .service-card img {
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.card:hover img, .case-card:hover img, .news-card:hover img {
  transform: scale(1.05);
}

/* 导航栏下拉菜单动画 */
.main-nav .dropdown {
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.main-nav li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 导航链接下划线动画 */
.main-nav .nav-link {
  position: relative;
}
.main-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform: translateX(-50%);
}
.main-nav .nav-link:hover::after,
.main-nav .nav-link.active::after {
  width: 100%;
}

/* 按钮点击效果 */
.btn:active {
  transform: translateY(0);
  transition: all 0.1s ease;
}

/* 客户LOGO墙hover增强 */
.client-logo-item {
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.client-logo-item:hover {
  transform: translateY(-3px);
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 页面加载淡入 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--gray-100);
}
::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}