:root{--primary:#0d47a1;--primary-light:#1565c0;--accent:#42a5f5;--dark:#1a237e;--text:#333;--text-light:#666;--bg:#f8f9fa;--white:#fff;--border:#e0e0e0;--shadow:0 2px 8px rgba(0,0,0,0.08);--radius:6px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,segoe ui,pingfang sc,hiragino sans gb,microsoft yahei,sans-serif;color:var(--text);line-height:1.7;background:var(--bg)}a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-light)}img{max-width:100%;height:auto}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}.header-top{background:var(--white);border-bottom:1px solid var(--border);padding:16px 0}.header-top .container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}.logo{display:flex;align-items:center;gap:12px}.logo img{max-height:56px}.logo-text{font-size:1.25rem;font-weight:700;color:var(--primary);line-height:1.3}.logo-text small{display:block;font-size:.75rem;color:var(--text-light);font-weight:400}.header-contact{display:flex;gap:24px;flex-wrap:wrap}.header-contact>div{display:flex;align-items:center;gap:10px}.header-contact .icon{width:40px;height:40px;background:var(--primary);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1rem}.header-contact strong{display:block;font-size:.8rem;color:var(--text-light);line-height:1.2}.header-contact span{font-size:.95rem;font-weight:600;color:var(--text)}.navbar{background:var(--primary);position:sticky;top:0;z-index:100;box-shadow:var(--shadow)}.navbar .container{display:flex;align-items:center;justify-content:space-between}.nav-menu{display:flex;list-style:none;margin:0;padding:0}.nav-menu li{position:relative}.nav-menu>li>a{display:block;padding:14px 18px;color:var(--white);font-size:.95rem;font-weight:500;transition:background .2s}.nav-menu>li>a:hover,.nav-menu>li.active>a{background:var(--primary-light)}.nav-menu li ul{display:none;position:absolute;top:100%;left:0;min-width:240px;background:var(--white);box-shadow:var(--shadow);border-radius:0 0 var(--radius)var(--radius);list-style:none;margin:0;padding:8px 0}@media(min-width:769px){.nav-menu li:hover>ul{display:block}}.nav-menu li ul a{display:block;padding:10px 18px;color:var(--text);font-size:.9rem;white-space:nowrap}.nav-menu li ul a:hover{background:var(--bg);color:var(--primary)}.mobile-toggle{display:none;background:0 0;border:none;color:var(--white);font-size:1.5rem;padding:12px;cursor:pointer}.submenu-toggle{display:none;background:0 0;border:none;color:var(--white);cursor:pointer}.hero{position:relative;min-height:460px;background:linear-gradient(135deg,var(--dark) 0%,var(--primary) 100%);color:var(--white);display:flex;align-items:center;padding:100px 0}.hero-bg{position:absolute;inset:0;opacity:.12;background-size:cover;background-position:50%}.hero-content{position:relative;z-index:1;max-width:820px}.hero h1{font-size:2.4rem;line-height:1.35;margin:0 0 24px;font-weight:700}.hero p{font-size:1.15rem;opacity:.92;margin:0 0 34px;max-width:680px}.btn{display:inline-block;padding:12px 28px;border-radius:var(--radius);font-weight:600;transition:transform .2s,box-shadow .2s}.btn-primary{background:var(--accent);color:var(--white)}.btn-primary:hover{background:#2196f3;color:var(--white);transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.15)}.section{padding:80px 0}.section.bg-white{background:var(--white)}.section-title{text-align:center;margin-bottom:54px}.section-title h2{font-size:.85rem;color:var(--primary-light);letter-spacing:2px;text-transform:uppercase;margin:0 0 10px;font-weight:600}.section-title h3{font-size:1.9rem;color:var(--text);margin:0;font-weight:700}.section-title p{color:var(--text-light);max-width:600px;margin:14px auto 0}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}.card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.1)}.card h4{margin:0 0 12px;color:var(--primary);font-size:1.15rem}.card p{margin:0;color:var(--text-light);font-size:.95rem}.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.feature-row.reverse{direction:rtl}.feature-row.reverse>*{direction:ltr}.feature-row img{border-radius:var(--radius);box-shadow:var(--shadow);max-height:360px;width:100%;object-fit:cover}.feature-content h4{font-size:1.35rem;color:var(--primary);margin:0 0 18px}.feature-content p{color:var(--text-light);margin:0 0 16px}.feature-content ul{margin:0;padding-left:20px}.feature-content li{margin-bottom:12px;color:var(--text)}.feature-content strong{color:var(--primary)}.stats-section{background:var(--bg);padding:60px 0}.quicknav{display:flex;align-items:center;justify-content:space-between;gap:40px;margin-bottom:50px;flex-wrap:wrap}.quicknav-title{font-size:1.6rem;font-weight:700;color:var(--primary);white-space:nowrap}.quicknav-items{display:flex;gap:16px;flex:1;justify-content:flex-end;flex-wrap:wrap}.quicknav-item{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;background:var(--white);color:var(--text);border-radius:var(--radius);box-shadow:var(--shadow);font-size:.95rem;font-weight:500;transition:all .2s;min-width:140px}.quicknav-item:hover{background:var(--primary);color:var(--white);transform:translateY(-2px);box-shadow:0 6px 16px rgba(13,71,161,.2)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;text-align:left}.stat-item{display:flex;align-items:center;gap:18px;padding:24px 40px;color:var(--text);border-right:1px solid var(--border)}.stat-item:last-child{border-right:none}.stat-item .stat-icon{width:56px;height:56px;object-fit:contain;opacity:.85}.stat-item .stat-info{display:flex;flex-direction:column}.stat-item .number{font-size:2.4rem;font-weight:700;line-height:1;margin-bottom:6px;color:var(--primary)}.stat-item .label{font-size:.95rem;color:var(--text-light)}.page-title-bar{background:linear-gradient(135deg,var(--primary) 0%,var(--dark) 100%);color:var(--white);padding:50px 0;text-align:center}.page-title-bar h1{margin:0 0 8px;font-size:2rem}.page-title-bar p{margin:0;opacity:.85}.page-content{background:var(--white);padding:50px 0;min-height:400px}.content-layout{display:grid;grid-template-columns:260px 1fr;gap:40px}.sidebar{background:var(--bg);border-radius:var(--radius);padding:24px;height:fit-content}.sidebar h4{margin:0 0 16px;color:var(--primary);font-size:1.1rem;padding-bottom:10px;border-bottom:2px solid var(--primary)}.sidebar-menu{list-style:none;margin:0;padding:0}.sidebar-menu li{border-bottom:1px solid var(--border)}.sidebar-menu a{display:block;padding:12px 0;color:var(--text)}.sidebar-menu a:hover,.sidebar-menu a.active{color:var(--primary)}.main-content h1,.main-content h2,.main-content h3,.main-content h4{color:var(--primary)}.main-content h2{font-size:1.5rem;margin-top:32px;padding-bottom:10px;border-bottom:2px solid var(--border)}.main-content h3{font-size:1.25rem;margin-top:24px}.main-content p{margin:0 0 16px}.article-meta-bar{display:flex;gap:20px;flex-wrap:wrap;color:var(--text-light);font-size:.9rem;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border)}.article-footer{margin-top:50px;padding-top:30px;border-top:1px solid var(--border)}.article-footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}.article-footer-nav h4,.article-footer-company h4{margin:0 0 16px;color:var(--primary);font-size:1.1rem}.article-footer-nav ul{list-style:none;margin:0;padding:0}.article-footer-nav li{margin-bottom:10px}.article-footer-nav a{color:var(--text)}.article-footer-nav a:hover{color:var(--primary)}.article-footer-company p{color:var(--text-light);font-size:.95rem;line-height:1.7;margin:0 0 16px}.main-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.95rem}.main-content th,.main-content td{border:1px solid var(--border);padding:12px;text-align:left}.main-content th{background:var(--bg);color:var(--primary)}.article-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}.article-card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:transform .2s,box-shadow .2s}.article-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.1)}.article-card img{width:100%;height:auto;display:block}.article-card .body{padding:20px}.article-card h4{margin:0 0 10px;font-size:1.1rem;color:var(--text)}.article-card p{margin:0;color:var(--text-light);font-size:.9rem;line-height:1.6}.article-meta{font-size:.8rem;color:#999;margin-bottom:8px}.breadcrumb{background:var(--bg);padding:12px 0;font-size:.9rem;color:var(--text-light)}.breadcrumb a{color:var(--text-light)}.breadcrumb a:hover{color:var(--primary)}.footer{background:var(--dark);color:rgba(255,255,255,.8);padding:60px 0 0}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}.footer h4{color:var(--white);margin:0 0 20px;font-size:1.1rem}.footer p,.footer a{color:rgba(255,255,255,.75);font-size:.9rem}.footer a:hover{color:var(--accent)}.footer-links{list-style:none;margin:0;padding:0}.footer-links li{margin-bottom:10px}.copyright{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:.85rem;color:rgba(255,255,255,.6)}@media(max-width:992px){.feature-row{grid-template-columns:1fr}.feature-row.reverse{direction:ltr}.stats-grid{grid-template-columns:repeat(2,1fr)}.stat-item{border-right:none;border-bottom:1px solid var(--border);padding:24px}.stat-item:nth-child(2n){border-left:1px solid var(--border)}.stat-item:nth-last-child(-n+2){border-bottom:none}.quicknav{flex-direction:column;align-items:flex-start;gap:20px}.quicknav-items{justify-content:flex-start;width:100%}.content-layout{grid-template-columns:1fr}.sidebar{order:2}.footer-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.header-top .container{flex-direction:column;text-align:center}.header-contact{display:none}.mobile-toggle{display:block}.nav-menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--primary);flex-direction:column}.nav-menu.open{display:flex}.nav-menu>li{display:flex;flex-wrap:wrap;align-items:center}.nav-menu>li>a{flex:1}.submenu-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;color:rgba(255,255,255,.9);font-size:.75rem}.nav-menu li ul{position:static;display:none;box-shadow:none;background:rgba(0,0,0,.1);border-radius:0;width:100%}.nav-menu li ul a{color:rgba(255,255,255,.9);padding-left:32px}.nav-menu li.open>ul{display:block}.footer-grid>div:nth-child(2),.footer-grid>div:nth-child(3){display:none}.article-footer-grid{grid-template-columns:1fr;gap:30px}.hero{min-height:320px;padding:50px 0}.hero h1{font-size:1.6rem}.stats-grid{grid-template-columns:1fr}.stat-item{border-left:none!important;border-bottom:1px solid var(--border);justify-content:center}.stat-item:last-child{border-bottom:none}.quicknav-item{flex:1 1 calc(50% - 8px);min-width:120px}.section{padding:50px 0}.footer-grid{grid-template-columns:1fr}}@media(max-width:480px){.stats-grid{grid-template-columns:1fr}}