:root{--primary:#0f3a66;--primary-light:#1a5ba6;--primary-dark:#0a2540;--accent:#b45309;--accent-light:#92400e;--text:#2c3e50;--text-light:#5d6d7e;--bg:#f8fafc;--bg-alt:#eef2f6;--white:#ffffff;--border:#dbe2e8;--shadow:rgba(15,58,102,0.08);--radius:8px;--radius-lg:12px;--max-width:1200px;--transition:all 0.3s ease}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto;display:block;border-radius:var(--radius)}a{color:var(--primary-light);text-decoration:none;transition:var(--transition)}a:hover{color:var(--accent)}h1,h2,h3,h4{font-weight:600;line-height:1.3;color:var(--primary-dark)}h1{font-size:2rem;margin-bottom:1rem}h2{font-size:1.5rem;margin:2rem 0 1rem;padding-bottom:0.5rem;border-bottom:2px solid var(--border)}h3{font-size:1.2rem;margin:1.5rem 0 0.75rem}h4{font-size:1.05rem;margin:1.25rem 0 0.5rem}p{margin-bottom:1rem;color:var(--text-light)}ul,ol{margin-bottom:1rem;padding-left:1.5rem}li{margin-bottom:0.4rem;color:var(--text-light)}.container{max-width:var(--max-width);margin:0 auto;padding:0 1rem}.site-header{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%);color:var(--white);padding:3.2rem 0 3rem;text-align:center;position:relative}.site-header .container{max-width:880px}.site-header h1{color:var(--white);font-size:2.55rem;line-height:1.25;letter-spacing:0.02em;margin-bottom:0.85rem}.site-header p{color:rgba(255,255,255,0.88);font-size:1.08rem;max-width:760px;margin:0 auto}.site-nav{background:rgba(255,255,255,0.94);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(15,58,102,0.08);box-shadow:0 10px 28px rgba(15,58,102,0.08);position:sticky;top:0;z-index:100}.nav-container{max-width:var(--max-width);margin:0 auto;padding:0 1rem;display:flex;justify-content:space-between;align-items:center;gap:1rem;min-height:68px}.nav-logo{display:inline-flex;align-items:center;gap:0.5rem;color:var(--primary-dark);text-decoration:none;padding:0.25rem 0;transition:transform 0.3s ease}.nav-logo:hover{transform:translateY(-2px)}.logo-icon{color:var(--primary);width:32px;height:32px;display:block}.logo-text{display:flex;flex-direction:column;justify-content:center;line-height:1.1;text-align:left}.logo-title{font-size:1.4rem;font-weight:800;color:var(--primary);letter-spacing:0.05em}.logo-sub{font-size:0.8rem;color:var(--text-light);letter-spacing:0.05em;margin-top:0.15rem}.nav-menu{display:flex;list-style:none;align-items:center;gap:0.35rem;padding:0;margin:0}.nav-menu li{margin:0;position:relative}.nav-menu a{display:inline-flex;align-items:center;min-height:42px;padding:0.55rem 0.9rem;color:var(--text);font-size:0.9rem;font-weight:600;border-radius:999px;position:relative;transition:color 0.25s ease,background-color 0.25s ease,transform 0.25s ease,box-shadow 0.25s ease}.nav-menu>li>a::after{content:"";position:absolute;left:1rem;right:1rem;bottom:0.45rem;height:2px;border-radius:999px;background:linear-gradient(90deg,var(--primary-light) 0%,var(--accent) 100%);opacity:0;transform:scaleX(0.5);transition:opacity 0.25s ease,transform 0.25s ease}.nav-menu a:hover,.nav-menu a.active{background:rgba(15,58,102,0.06);color:var(--primary);transform:translateY(-1px)}.nav-menu>li>a:hover::after,.nav-menu>li>a.active::after{opacity:1;transform:scaleX(1)}.nav-toggle{display:none;width:42px;height:42px;border:1px solid rgba(15,58,102,0.12);border-radius:12px;background:rgba(15,58,102,0.05);font-size:1.35rem;color:var(--primary);cursor:pointer;transition:var(--transition)}.nav-toggle:hover{background:rgba(15,58,102,0.1);color:var(--primary-dark)}.dropdown:hover .dropdown-menu{display:block}.dropdown-menu{display:none;position:absolute;top:calc(100%+0.55rem);left:0;background:rgba(255,255,255,0.98);min-width:220px;box-shadow:0 18px 36px rgba(15,58,102,0.14);border:1px solid rgba(15,58,102,0.08);border-radius:16px;padding:0.65rem;list-style:none;backdrop-filter:blur(12px)}.dropdown-menu::before{content:"";position:absolute;top:-7px;left:28px;width:14px;height:14px;background:rgba(255,255,255,0.98);border-left:1px solid rgba(15,58,102,0.08);border-top:1px solid rgba(15,58,102,0.08);transform:rotate(45deg)}.dropdown-menu a{display:flex;width:100%;min-height:0;padding:0.65rem 0.9rem;font-size:0.86rem;border-radius:10px}.dropdown-menu a::after{display:none}.dropdown-menu a:hover{background:rgba(15,58,102,0.06);transform:translateX(2px)}.breadcrumb{background:var(--bg-alt);padding:0.75rem 0;font-size:0.85rem;color:var(--text-light)}.breadcrumb a{color:var(--text-light)}.breadcrumb a:hover{color:var(--primary)}.breadcrumb span{margin:0 0.3rem}.main-wrapper{max-width:var(--max-width);margin:2rem auto;padding:0 1rem;display:grid;grid-template-columns:1fr 300px;gap:2rem}.main-content{min-width:0}.main-content h1{font-size:1.8rem;margin-bottom:1.5rem}.main-content h2{font-size:1.35rem;margin-top:2rem}.main-content h3{font-size:1.15rem;margin-top:1.5rem}.main-content p{text-align:justify}.sidebar .widget{background:var(--white);border-radius:var(--radius-lg);padding:1.5rem;margin-bottom:1.5rem;box-shadow:0 2px 12px var(--shadow)}.sidebar .widget h3{font-size:1.1rem;margin:0 0 1rem;padding-bottom:0.5rem;border-bottom:2px solid var(--primary);color:var(--primary)}.sidebar ul{list-style:none;padding:0}.sidebar li{margin-bottom:0.6rem;padding-left:0}.sidebar a{display:block;padding:0.4rem 0;font-size:0.9rem;border-bottom:1px dashed var(--border)}.sidebar a:hover{padding-left:0.5rem}.cta-box{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);color:var(--white);padding:2rem;border-radius:var(--radius-lg);text-align:center;margin:2rem 0}.cta-box h3{color:var(--white);margin-bottom:0.5rem}.cta-box p{color:rgba(255,255,255,0.9);margin-bottom:1rem}.cta-btn{display:inline-block;background:var(--accent);color:var(--white);padding:0.75rem 2rem;border-radius:var(--radius);font-weight:600;font-size:1rem;transition:var(--transition)}.cta-btn:hover{background:var(--accent-light);transform:translateY(-2px)}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;margin:2rem 0}.feature-card{background:var(--white);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:0 2px 12px var(--shadow);transition:var(--transition);border-top:3px solid var(--primary)}.feature-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px var(--shadow)}.feature-card h3{color:var(--primary);margin-top:0;font-size:1.1rem}.feature-card p{font-size:0.9rem;margin-bottom:0}.intent-panel{background:var(--white);border-radius:var(--radius-lg);padding:1.5rem;margin:2rem 0;box-shadow:0 2px 12px var(--shadow)}.intent-heading{display:flex;justify-content:space-between;gap:1.5rem;align-items:flex-end;margin-bottom:1rem}.intent-heading h2{margin:0;border-bottom:0;padding-bottom:0}.intent-heading p{max-width:460px;margin:0;font-size:0.95rem;text-align:left}.intent-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1rem}.intent-card{display:block;min-height:118px;padding:1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg)}.intent-card:hover{border-color:var(--primary-light);background:#fff;transform:translateY(-2px);box-shadow:0 6px 16px var(--shadow)}.intent-card strong{display:block;color:var(--primary-dark);margin-bottom:0.4rem}.intent-card span{color:var(--text-light);font-size:0.9rem}.info-table{width:100%;border-collapse:collapse;margin:1.5rem 0;background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 8px var(--shadow)}.info-table th{background:var(--primary);color:var(--white);padding:0.85rem 1rem;text-align:left;font-weight:500;font-size:0.9rem}.info-table td{padding:0.75rem 1rem;border-bottom:1px solid var(--border);font-size:0.9rem;color:var(--text-light)}.info-table tr:hover td{background:var(--bg)}.site-footer{background:var(--primary-dark);color:rgba(255,255,255,0.7);padding:3rem 0 1.5rem;margin-top:3rem}.footer-grid{max-width:var(--max-width);margin:0 auto;padding:0 1rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:2rem}.footer-grid h4{color:var(--white);margin-bottom:1rem;font-size:1rem}.footer-grid ul{list-style:none;padding:0}.footer-grid li{margin-bottom:0.5rem}.footer-grid a{color:rgba(255,255,255,0.7);font-size:0.9rem}.footer-grid a:hover{color:var(--accent)}.footer-bottom{text-align:center;padding-top:2rem;margin-top:2rem;border-top:1px solid rgba(255,255,255,0.1);font-size:0.85rem}.site-footer p{color:rgba(255,255,255,0.78)}@media (max-width:900px){.main-wrapper{grid-template-columns:1fr}.sidebar{order:2}.nav-toggle{display:block}.nav-logo{gap:0.4rem}.logo-icon{width:28px;height:28px}.logo-title{font-size:1.2rem}.logo-sub{font-size:0.7rem}.nav-menu{display:none;position:absolute;top:calc(100%+0.55rem);left:1rem;right:1rem;background:rgba(255,255,255,0.98);flex-direction:column;align-items:stretch;padding:1rem;border-radius:18px;border:1px solid rgba(15,58,102,0.08);box-shadow:0 16px 34px rgba(15,58,102,0.14);gap:0.4rem}.nav-menu.active{display:flex}.nav-menu a{width:100%;justify-content:space-between;border-radius:12px}.nav-menu>li>a::after{left:0.9rem;right:0.9rem;bottom:0.35rem}.dropdown-menu{position:static;min-width:0;box-shadow:none;display:none;padding:0.4rem;margin-top:0.35rem;border-radius:14px;background:rgba(15,58,102,0.03);border:1px solid rgba(15,58,102,0.06);backdrop-filter:none}.dropdown-menu::before{display:none}.dropdown.open .dropdown-menu{display:block}.site-header h1{font-size:1.6rem}.site-header p{font-size:0.95rem}}@media (max-width:600px){h1{font-size:1.5rem}h2{font-size:1.2rem}.feature-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.cta-box{padding:1.5rem 1rem}.logo-icon{width:24px;height:24px}.logo-title{font-size:1.1rem}.logo-sub{font-size:0.6rem}}.article-list{display:grid;gap:1rem}.article-item{background:var(--white);border-radius:var(--radius);padding:1rem;box-shadow:0 1px 6px var(--shadow);display:flex;gap:1rem;align-items:flex-start}.article-item img{width:120px;height:80px;object-fit:cover;border-radius:var(--radius);flex-shrink:0}.article-item h3,.article-item h4{margin:0 0 0.25rem;font-size:1rem}.article-item p{margin:0;font-size:0.85rem}.tag{display:inline-block;background:var(--bg-alt);color:var(--primary);padding:0.2rem 0.6rem;border-radius:4px;font-size:0.8rem;margin-right:0.4rem;margin-bottom:0.4rem}.city-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin:1.5rem 0}.city-card{background:var(--white);border-radius:var(--radius);padding:1rem;text-align:center;box-shadow:0 2px 8px var(--shadow);transition:var(--transition)}.city-card:hover{transform:translateY(-3px);box-shadow:0 6px 18px var(--shadow)}.city-card h3,.city-card h4{margin:0.5rem 0 0;font-size:1rem}.city-card p{margin:0.25rem 0 0;font-size:0.8rem}.faq-item{margin-bottom:1.5rem}.faq-item h4{color:var(--primary);cursor:pointer;padding:0.75rem;background:var(--bg-alt);border-radius:var(--radius)}.faq-item p{padding:0.75rem;background:var(--white);border-radius:0 0 var(--radius) var(--radius);margin:0}.hero-section{background:linear-gradient(135deg,var(--bg-alt) 0%,var(--bg) 100%);padding:2.5rem 0;margin-bottom:2rem}.hero-content{max-width:var(--max-width);margin:0 auto;padding:0 1rem;display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:center}.hero-text h1{font-size:2rem;margin-bottom:1rem}.hero-text p{font-size:1.05rem;margin-bottom:1.5rem}.hero-stats{display:flex;gap:1.5rem;margin-top:1.5rem}.hero-stat{text-align:center}.hero-stat strong{display:block;font-size:1.5rem;color:var(--primary)}.hero-stat span{font-size:0.8rem;color:var(--text-light)}@media (max-width:768px){.hero-content{grid-template-columns:1fr}.hero-stats{justify-content:center}}.page-intro{background:var(--white);border-radius:var(--radius-lg);padding:1.5rem;margin-bottom:2rem;box-shadow:0 2px 12px var(--shadow);border-left:4px solid var(--primary)}.page-intro p{margin:0;font-size:1.05rem}.sitemap-section{background:var(--white);border-radius:var(--radius-lg);padding:1.5rem;margin-bottom:1.5rem;box-shadow:0 2px 12px var(--shadow)}.sitemap-section h2{margin-top:0}.sitemap-tools{background:var(--white);border-radius:var(--radius-lg);padding:1rem;margin:1.5rem 0;box-shadow:0 2px 12px var(--shadow)}.sitemap-tools label{display:block;color:var(--primary-dark);font-weight:600;margin-bottom:0.5rem}.sitemap-tools input,.quote-helper input,.quote-helper select,.quote-helper textarea{width:100%;border:1px solid var(--border);border-radius:var(--radius);padding:0.75rem 0.85rem;font:inherit;background:#fff;color:var(--text)}.sitemap-empty{margin:1rem 0 0;color:var(--accent)}.sitemap-list{list-style:none;padding-left:0;margin-bottom:0}.sitemap-list li{padding:0.85rem 0;margin-bottom:0;border-bottom:1px solid var(--border)}.sitemap-list li:last-child{border-bottom:0}.sitemap-list a{font-weight:600}.sitemap-list p{margin:0.25rem 0 0;font-size:0.9rem;text-align:left}.quote-helper{background:var(--white);border-radius:var(--radius-lg);padding:1.5rem;margin:2rem 0;box-shadow:0 2px 12px var(--shadow)}.quote-helper h2{margin-top:0}.quote-form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}.quote-helper label{display:grid;gap:0.35rem;color:var(--primary-dark);font-weight:600}.quote-helper small{color:var(--text-light);font-weight:400}.quote-helper textarea{min-height:118px;resize:vertical}.quote-note{background:var(--bg-alt);border-left:4px solid var(--accent);border-radius:var(--radius);padding:1rem;margin-top:1rem}.quote-note p{margin:0;text-align:left}.evidence-summary{background:var(--white);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:var(--radius-lg);padding:1.5rem;margin:2rem 0;box-shadow:0 2px 12px var(--shadow)}.evidence-summary h2{margin-top:0}.direct-answer{text-align:left;color:var(--text)}.fact-table{width:100%;border-collapse:collapse;margin:1rem 0;background:#fff}.fact-table th,.fact-table td{border-bottom:1px solid var(--border);padding:0.8rem 0.9rem;text-align:left;vertical-align:top}.fact-table th{width:150px;color:var(--primary-dark);background:var(--bg-alt);font-weight:700}.fact-table td{color:var(--text)}.evidence-note{margin:0;font-size:0.9rem;text-align:left}.footer-links{max-width:var(--max-width);margin:2rem auto 0;padding:1.5rem 1rem 0;border-top:1px solid rgba(255,255,255,0.1)}.footer-links h4{color:var(--white);margin-bottom:0.75rem}.footer-links ul{display:flex;flex-wrap:wrap;gap:0.7rem 1.2rem;list-style:none;padding:0;margin:0}.footer-links li{margin:0}.footer-links a{color:rgba(255,255,255,0.76);font-size:0.9rem}.footer-links a:hover{color:var(--accent)}.site-header.hero-banner{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%);padding:2.5rem 0;position:relative}.site-header.hero-banner h1{font-size:2.8rem;margin-bottom:1rem;text-shadow:0 2px 4px rgba(0,0,0,0.3)}.site-header.hero-banner p{font-size:1.2rem;max-width:800px;margin:0 auto 3rem;text-shadow:0 1px 2px rgba(0,0,0,0.3)}.hero-features{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap;max-width:1000px;margin:0 auto}.hero-feature-item{display:flex;align-items:center;gap:1rem;background:rgba(255,255,255,0.1);padding:1rem 1.5rem;border-radius:var(--radius-lg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.2);color:var(--white);flex:1;min-width:220px}.hero-feature-item svg{flex-shrink:0;color:#a3c2e0}.feature-text{display:flex;flex-direction:column;text-align:left}.feature-text strong{font-size:1.1rem;font-weight:600}.feature-text span{font-size:0.85rem;opacity:0.85}.page-intro.welcome-card{display:flex;align-items:center;gap:2rem;border-left:6px solid var(--primary);background:var(--white);padding:1.85rem 2rem;border-radius:var(--radius-lg);box-shadow:0 10px 24px rgba(15,58,102,0.08);margin-top:-1.25rem;position:relative;z-index:10}.welcome-icon{flex-shrink:0;color:var(--primary-light);background:rgba(26,91,166,0.05);width:80px;height:80px;display:flex;align-items:center;justify-content:center;border-radius:50%}.welcome-text p{margin:0;font-size:1.1rem;line-height:1.8;color:var(--text)}@media (max-width:768px){.site-header{padding:2.5rem 0 2.3rem}.site-header h1{font-size:2rem}.site-header p{font-size:1rem}.hero-features{gap:1rem}.hero-feature-item{min-width:100%}.page-intro.welcome-card{flex-direction:column;gap:1rem;text-align:center}.intent-heading{display:block}.intent-heading h2{margin-bottom:0.5rem}}