*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;line-height:1.8;color:#2d3748;background:#f5f7fa;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:#e8530e;text-decoration:none;transition:all .2s}
a:hover{color:#c7440a}
img{max-width:100%;height:auto}

.header{background:#fff;border-bottom:3px solid #e8530e;padding:0;position:sticky;top:0;z-index:100;box-shadow:0 1px 8px rgba(0,0,0,.06)}
.header-inner{max-width:1100px;margin:0 auto;padding:12px 20px;display:flex;justify-content:space-between;align-items:center}
.logo{font-size:22px;font-weight:700;color:#2d3748;text-decoration:none;letter-spacing:-.5px;display:flex;align-items:center;gap:8px}
.logo:hover{color:#e8530e}
.logo-icon{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;background:linear-gradient(135deg,#e8530e,#ff7b47);border-radius:8px;color:#fff;font-size:16px;font-weight:800}
.nav{display:flex;gap:4px}
.nav a{color:#4a5568;padding:7px 16px;border-radius:6px;font-size:15px;transition:all .25s;font-weight:500}
.nav a:hover{color:#e8530e;background:#fff5f0}
.nav a.active{color:#fff;background:linear-gradient(135deg,#e8530e,#ff7b47);font-weight:600;box-shadow:0 2px 8px rgba(232,83,14,.25)}

.main{max-width:1100px;margin:0 auto;padding:30px 20px}
.container{display:flex;gap:30px}
.content{flex:1;min-width:0}
.sidebar{width:280px;flex-shrink:0}

.breadcrumb{font-size:14px;color:#a0aec0;margin-bottom:20px;padding:10px 0}
.breadcrumb a{color:#a0aec0;transition:color .2s}
.breadcrumb a:hover{color:#e8530e}

.article-header{margin-bottom:25px}
.article-title{font-size:28px;font-weight:700;color:#1a202c;line-height:1.4;margin-bottom:12px}
.article-meta{font-size:14px;color:#a0aec0;display:flex;gap:15px;flex-wrap:wrap}
.article-meta span{display:flex;align-items:center;gap:4px}
.article-meta .tag-cat{background:#fff5f0;color:#e8530e;padding:2px 10px;border-radius:4px;font-size:12px;font-weight:600}

.article-content{background:#fff;padding:35px;border-radius:12px;box-shadow:0 1px 6px rgba(0,0,0,.05);margin-bottom:25px;border:1px solid #edf2f7}
.article-content h2{font-size:22px;color:#1a202c;margin:30px 0 15px;padding-left:14px;border-left:4px solid #e8530e;font-weight:700;position:relative}
.article-content h3{font-size:18px;color:#2d3748;margin:25px 0 12px;font-weight:600}
.article-content p{margin-bottom:18px;color:#444;line-height:1.9}
.article-content ul,.article-content ol{margin:15px 0;padding-left:25px}
.article-content li{margin-bottom:8px;color:#444}
.article-content strong{color:#1a202c}

.info-table{width:100%;border-collapse:separate;border-spacing:0;margin:20px 0;font-size:15px;border-radius:10px;overflow:hidden;border:1px solid #edf2f7}
.info-table th{background:linear-gradient(135deg,#e8530e,#ff7b47);padding:14px 18px;text-align:left;font-weight:600;color:#fff;border:none}
.info-table td{padding:13px 18px;border-bottom:1px solid #f0f4f8;color:#444;background:#fff;transition:background .15s}
.info-table tr:nth-child(even) td{background:#fafbfc}
.info-table tr:hover td{background:#fff5f0}
.info-table tr:last-child td{border-bottom:none}

.article-tip{background:linear-gradient(135deg,#fff5f0,#fff8f5);border-left:4px solid #e8530e;padding:18px 22px;margin:25px 0;border-radius:0 10px 10px 0;font-size:14px;color:#555}
.article-tip a{font-weight:600;color:#e8530e}

.article-tags{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}
.tag{background:#f0f4f8;color:#555;padding:5px 14px;border-radius:20px;font-size:13px;transition:all .2s}
.tag:hover{background:#fff5f0;color:#e8530e}

.related{background:#fff;padding:25px;border-radius:12px;box-shadow:0 1px 6px rgba(0,0,0,.05);margin-bottom:25px;border:1px solid #edf2f7}
.related h3{font-size:18px;color:#1a202c;margin-bottom:15px;font-weight:700;padding-bottom:10px;border-bottom:2px solid #f0f4f7}
.related-list{list-style:none}
.related-list li{margin-bottom:10px;padding:4px 0;border-bottom:1px dashed #f0f4f8}
.related-list li:last-child{border-bottom:none}
.related-list a{color:#444;font-size:15px;display:flex;align-items:center;gap:6px;transition:all .2s;padding:2px 0}
.related-list a:hover{color:#e8530e;padding-left:4px}
.related-list .date{color:#999;font-size:13px;margin-left:auto}

.widget{background:#fff;padding:20px;margin-bottom:20px;border-radius:12px;box-shadow:0 1px 6px rgba(0,0,0,.05);border:1px solid #edf2f7;transition:box-shadow .3s}
.widget:hover{box-shadow:0 4px 16px rgba(0,0,0,.08)}
.widget h3{font-size:16px;color:#1a202c;margin-bottom:15px;padding-bottom:10px;border-bottom:2px solid #f0f4f7;font-weight:700;position:relative}
.widget h3::after{content:'';position:absolute;bottom:-2px;left:0;width:40px;height:2px;background:#e8530e}
.widget ul{list-style:none}
.widget li{margin-bottom:8px}
.widget a{color:#555;font-size:14px;transition:all .2s;padding:3px 0;display:inline-block}
.widget a:hover{color:#e8530e;padding-left:4px}

.area-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px;margin-top:10px}
.area-item{display:block;text-align:center;padding:10px 8px;background:#f7f8fa;border-radius:8px;font-size:14px;color:#555;transition:all .25s;font-weight:500;border:1px solid transparent}
.area-item:hover{background:linear-gradient(135deg,#e8530e,#ff7b47);color:#fff;transform:translateY(-2px);box-shadow:0 4px 12px rgba(232,83,14,.3);border-color:transparent}

.xiaoqu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px;margin-top:10px}
.xiaoqu-item{display:block;padding:10px 12px;background:#fff;border:1px solid #edf2f7;border-radius:8px;font-size:14px;color:#444;transition:all .25s}
.xiaoqu-item:hover{border-color:#e8530e;color:#e8530e;background:#fff5f0;transform:translateY(-1px);box-shadow:0 2px 8px rgba(232,83,14,.12)}

.post-list{list-style:none}
.post-item{background:#fff;padding:22px 24px;border-radius:12px;box-shadow:0 1px 6px rgba(0,0,0,.05);margin-bottom:16px;transition:all .3s;border:1px solid #edf2f7}
.post-item:hover{border-color:#e8530e;box-shadow:0 6px 20px rgba(232,83,14,.1);transform:translateY(-2px)}
.post-item h3{font-size:18px;margin-bottom:8px}
.post-item h3 a{color:#1a202c;transition:color .2s}
.post-item h3 a:hover{color:#e8530e}
.post-item .excerpt{color:#666;font-size:14px;margin-bottom:10px;line-height:1.6}
.post-item .post-meta{font-size:13px;color:#999;display:flex;gap:12px;align-items:center}
.post-item .post-meta .speed-badge{background:#f0f4f8;color:#e8530e;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:600}

.hero{background:linear-gradient(135deg,#1a202c 0%,#2d3748 50%,#4a5568 100%);padding:50px 30px;border-radius:16px;margin-bottom:30px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:400px;height:400px;background:radial-gradient(circle,rgba(232,83,14,.15) 0%,transparent 70%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-30%;left:-10%;width:300px;height:300px;background:radial-gradient(circle,rgba(255,123,71,.1) 0%,transparent 70%);pointer-events:none}
.hero h1{font-size:32px;font-weight:700;color:#fff;margin-bottom:12px;line-height:1.3;position:relative}
.hero p{color:#cbd5e0;font-size:16px;margin-bottom:0;line-height:1.7;position:relative}

.section-title{font-size:22px;font-weight:700;color:#1a202c;margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid #e8530e;display:inline-block;position:relative}

.faq-item{background:#fff;padding:20px;border-radius:12px;border:1px solid #edf2f7;margin-bottom:12px;transition:all .3s;box-shadow:0 1px 4px rgba(0,0,0,.03)}
.faq-item:hover{border-color:#ffd6c4;box-shadow:0 2px 10px rgba(232,83,14,.08)}
.faq-item h3{font-size:16px;color:#1a202c;margin-bottom:10px;font-weight:600;position:relative;padding-left:20px}
.faq-item h3::before{content:'Q';position:absolute;left:0;top:0;background:linear-gradient(135deg,#e8530e,#ff7b47);color:#fff;width:18px;height:18px;border-radius:4px;font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:800;line-height:1}
.faq-item p{color:#555;font-size:15px;padding-left:20px}

.footer{background:linear-gradient(180deg,#1a202c,#2d3748);color:#a0aec0;padding:40px 20px 20px;margin-top:0;border-top:3px solid #e8530e}
.footer-inner{max-width:1100px;margin:0 auto}
.footer-top{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:30px;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:16px}
.footer-brand{max-width:300px}
.footer-brand .brand-name{font-size:18px;font-weight:700;color:#fff;margin-bottom:6px}
.footer-brand p{font-size:13px;color:#718096;line-height:1.7}
.footer-links{display:flex;gap:24px;font-size:14px;flex-direction:column}
.footer-links a{color:#a0aec0;transition:color .2s}
.footer-links a:hover{color:#e8530e}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px}
.footer .beian{font-size:13px;text-align:right}
.footer .beian a{color:#718096;font-size:13px;transition:color .2s}
.footer .beian a:hover{color:#e8530e}
.footer .copy{color:#718096}

.cta-box{background:linear-gradient(135deg,#e8530e,#ff7b47);padding:20px 24px;border-radius:12px;margin:25px 0;text-align:center;box-shadow:0 4px 16px rgba(232,83,14,.25)}
.cta-box p{color:#fff;font-size:15px;margin-bottom:10px;font-weight:500}
.cta-box a{display:inline-block;background:#fff;color:#e8530e;padding:8px 24px;border-radius:8px;font-weight:600;font-size:14px;transition:all .25s;box-shadow:0 2px 8px rgba(0,0,0,.1)}
.cta-box a:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,.15)}

.about-page{max-width:700px;margin:0 auto}
.about-page h1{font-size:28px;font-weight:700;margin-bottom:20px;color:#1a202c}
.about-page p{margin-bottom:16px;color:#444;line-height:1.8}
.about-page .contact-info{background:#f0f4f8;padding:20px;border-radius:6px;margin:20px 0}
.about-page .contact-info p{margin-bottom:8px}
.about-page .disclaimer{background:#fff8e1;border-left:4px solid #f9a825;padding:15px 20px;margin:25px 0;border-radius:0 4px 4px 0;font-size:14px;color:#666}

.operator-tag{display:inline-block;padding:2px 10px;border-radius:4px;font-size:12px;font-weight:600}
.operator-tag.unicom{background:#ffe8e0;color:#e8530e}
.operator-tag.mobile{background:#e0f2fe;color:#0369a1}
.operator-tag.telecom{background:#e0e7ff;color:#4338ca}

.speed-highlight{display:inline-block;background:linear-gradient(135deg,#e8530e,#ff7b47);color:#fff;padding:4px 14px;border-radius:20px;font-size:14px;font-weight:700;box-shadow:0 2px 8px rgba(232,83,14,.2)}

.price-big{font-size:32px;font-weight:800;color:#e8530e;line-height:1}
.price-big .unit{font-size:16px;font-weight:600;color:#718096}

@media(max-width:768px){
    .container{flex-direction:column}
    .sidebar{width:100%}
    .header-inner{flex-direction:column;gap:10px}
    .nav{flex-wrap:wrap;justify-content:center}
    .article-title{font-size:22px}
    .hero h1{font-size:24px}
    .hero{padding:30px 20px}
    .article-content{padding:20px}
    .xiaoqu-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
    .footer-top{flex-direction:column}
    .footer-bottom{flex-direction:column;text-align:center}
    .footer .beian{text-align:center}
    .price-big{font-size:26px}
}