/* === 基础 Reset === */
html{font-size:16px;-webkit-text-size-adjust:100%}
body{margin:0}
img{max-width:100%}
.city-wrapper{font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:#333;line-height:1.7;margin:0;padding:0;font-size:1rem}
.city-wrapper .container{max-width:1100px;margin:0 auto;padding:0 20px;position:relative}
.city-wrapper a{color:var(--theme-color);text-decoration:none}
.city-wrapper a:hover{text-decoration:underline}

/* === 头部 Hero === */
.city-header{color:#fff;padding:48px 0 36px;text-align:center;position:relative;overflow:hidden}
.city-header h1{font-size:38px;margin:0 0 8px;font-weight:700;letter-spacing:3px}
.city-header .subtitle{font-size:16px;opacity:.9;margin:0 0 16px}
.city-header .phone-btn{display:inline-block;margin-top:14px;padding:10px 28px;color:#fff!important;font-size:16px;font-weight:700;text-decoration:none!important;border:1px solid rgba(255,255,255,.75);border-radius:999px;background:rgba(255,255,255,.12);transition:background .2s}
.city-header .phone-btn:active,.city-header .phone-btn:hover{background:rgba(255,255,255,.22)}

/* === 返回链接 === */
.back-links{display:flex;justify-content:center;gap:20px;margin:24px auto 24px;width:100%;max-width:360px}
.back-links .back-home{flex:1;padding:10px 0;text-align:center;font-size:15px;font-weight:500;color:rgba(255,255,255,.9);text-decoration:none;border:1px solid rgba(255,255,255,.5);border-radius:999px;background:rgba(255,255,255,.05);transition:all .3s ease}
.back-links .back-home:hover{background:rgba(255,255,255,.2);border-color:#fff;color:#fff;transform:translateY(-2px)}

/* === Section 通用 === */
.city-section{padding:44px 0}
.city-section:nth-child(even){background:#f8f9fa}
.section-box,.about-container,.advantage-container,.delivery-container,.service-container,.case-container,.news-container{max-width:980px;margin:0 auto;background:#fff;border-radius:12px;padding:30px 34px;box-shadow:0 2px 12px rgba(0,0,0,.06)}
.section-subtitle{text-align:center;color:#888;font-size:14px;margin:6px 0 40px;line-height:1.6}
.section-title{text-align:center;font-size:26px;font-weight:700;color:#222;margin:0 0 12px;position:relative;padding-bottom:12px}
.section-title::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:50px;height:3px;background:var(--theme-color);border-radius:2px}

/* === 关于我们 === */
.about-content{max-width:100%;margin:0;text-align:left;font-size:15px;line-height:1.9;color:#444}
.about-content p{margin-bottom:12px}
.about-content p:first-of-type{font-size:16px;font-weight:600;color:var(--theme-color)}
.about-content strong{color:var(--theme-color)}

/* === 核心优势 === */
.advantage-grid{display:flex;justify-content:space-between;align-items:stretch;gap:20px;max-width:960px;margin:0 auto}
.advantage-card{flex:1;text-align:center;padding:32px 16px;background:#f8f9fa;border-radius:12px;transition:all .3s;border:1px solid transparent}
.advantage-card:hover{transform:translateY(-5px);background:#fff;box-shadow:0 6px 20px rgba(0,0,0,.08);border-color:color-mix(in srgb,var(--theme-color) 25%,transparent)}
.advantage-icon{font-size:44px;margin-bottom:12px;line-height:1}
.advantage-title{font-size:18px;font-weight:700;color:#222;margin-bottom:8px}
.advantage-desc{font-size:14px;color:#555;line-height:1.5;max-width:130px;margin:0 auto}

/* === 交付流程 === */
.delivery-list{list-style:none;padding:0 0 0 28px;margin:0;position:relative}
.delivery-list::before{content:'';position:absolute;left:10px;top:4px;bottom:4px;width:3px;background:var(--theme-color);border-radius:2px}
.delivery-item{position:relative;display:block;padding:14px 16px;margin-bottom:10px;background:#f8f9fa;border-radius:8px;border:1px solid #eef1f4;transition:all .3s}
.delivery-item:last-child{margin-bottom:0}
.delivery-item:hover{box-shadow:0 4px 14px rgba(0,0,0,.07);border-color:color-mix(in srgb,var(--theme-color) 30%,transparent)}
.delivery-num{position:absolute;left:-28px;top:18px;width:32px;height:32px;line-height:32px;text-align:center;background:var(--theme-color);color:#fff;border-radius:50%;font-weight:700;font-size:15px;box-shadow:0 2px 6px var(--theme-color);flex-shrink:0}
.delivery-icon{font-size:30px;margin-bottom:3px}
.delivery-title{font-size:18px;font-weight:700;margin-bottom:3px;color:#222}
.delivery-desc{font-size:14px;color:#666;line-height:1.6}

/* === 服务体系 === */
.service-grid{display:flex!important;flex-direction:column!important;gap:28px!important}
.service-card{display:flex!important;flex-direction:row!important;align-items:stretch!important;background:#fff!important;border-radius:12px!important;overflow:hidden!important;box-shadow:0 3px 14px rgba(0,0,0,.06)!important;transition:all .3s ease!important;border:1px solid #eef1f4!important}
.service-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1)!important;transform:translateY(-3px)!important;border-color:var(--theme-color)!important}
.service-card img{width:300px!important;height:210px!important;max-height:none!important;aspect-ratio:auto!important;object-fit:cover!important;flex-shrink:0!important;display:block!important;border:none!important}
.service-card:nth-child(even){flex-direction:row-reverse!important}
.service-card .service-desc{flex:1!important;padding:24px 28px!important;font-size:15px!important;color:#333!important;line-height:1.85!important;text-align:left!important;display:block!important}
.service-card .service-desc p{margin-bottom:12px}
.service-card .service-desc p:last-child{margin-bottom:0}
.service-card .service-desc strong,.service-card .service-desc b,.service-card .service-desc p span{color:var(--theme-color);font-size:20px;font-weight:700;display:block;margin-bottom:10px}

/* === 案例见证 === */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.05);transition:all .3s;border:1px solid #eef1f4;display:flex;flex-direction:column}
.case-card:hover{box-shadow:0 6px 20px rgba(0,0,0,.1);transform:translateY(-4px)}
.case-card img{max-height:180px;width:100%;aspect-ratio:1/1;object-fit:cover;display:block}
.case-card .case-desc{padding:14px 16px 50px;font-size:14px;color:#555;line-height:1.65;flex:1;display:-webkit-box;-webkit-line-clamp:5;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis}
.case-card .case-link{display:block;padding:12px 16px;font-size:14px;color:var(--theme-color);font-weight:700;text-align:center;background:color-mix(in srgb,var(--theme-color) 8%,#fff);border-top:1px solid #eef1f4;transition:all .3s;margin-top:auto}
.case-card .case-link:hover{background:var(--theme-color);color:#fff;text-decoration:none}

/* === 公司动态 === */
.news-list{list-style:none;padding:0;margin:0}
.news-item{padding:13px 16px;border-bottom:1px solid #eef1f4;display:flex;align-items:flex-start;gap:12px;transition:all .3s;border-radius:6px}
.news-item:last-child{border-bottom:none}
.news-item:hover{background:color-mix(in srgb,var(--theme-color) 8%,#fff);transform:translateX(3px)}
.news-cat{display:inline-block;background:#fff3e0;color:#e68900;padding:2px 10px;border-radius:20px;font-size:12px;font-weight:600;flex-shrink:0;margin-top:2px}
.news-date{font-size:13px;color:#999;flex-shrink:0;min-width:82px;margin-top:2px;font-weight:500}
.news-content{font-size:14px;color:#333;flex:1;min-width:150px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis;line-height:1.6}

/* === FAQ === */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #e4eaec;border-radius:8px;margin-bottom:12px;overflow:hidden;transition:all .25s ease}
.faq-item:hover{border-color:color-mix(in srgb,var(--theme-color) 35%,transparent)}
.faq-item[open]{border-color:var(--theme-color);box-shadow:0 2px 12px color-mix(in srgb,var(--theme-color) 12%,transparent)}
.faq-item summary{list-style:none;cursor:pointer;padding:16px 22px;display:flex;align-items:center;gap:12px;transition:background .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-q{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:6px;background:color-mix(in srgb,var(--theme-color) 10%,#fff);color:var(--theme-color);font-size:14px;font-weight:700;flex-shrink:0}
.faq-q-text{flex:1;font-size:16px;font-weight:600;color:#222;line-height:1.5}
.faq-toggle{font-size:20px;color:var(--theme-color);font-weight:400;flex-shrink:0;transition:transform .2s;line-height:1}
.faq-toggle::before{content:'+'}
.faq-item[open] .faq-toggle{transform:rotate(45deg)}
.faq-answer{padding:0 22px 18px 22px;color:#555;font-size:15px;line-height:1.85}
.faq-answer-inner{border-top:1px solid #f2f4f6;padding-top:14px;margin-left:10px;display:flex;align-items:flex-start;gap:12px}
.faq-a{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:6px;background:color-mix(in srgb,var(--theme-color) 10%,#fff);color:var(--theme-color);font-size:14px;font-weight:700;flex-shrink:0}
.faq-a-text{flex:1;color:#555;line-height:1.85}

/* === CTA === */
.city-cta{background-color:var(--theme-color);padding:56px 20px}
.city-cta .container{max-width:1100px;margin:0 auto}
.city-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.city-cta-text h2{font-size:26px;font-weight:700;margin:0 0 10px;color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.25)}
.city-cta-text p{font-size:15px;color:rgba(255,255,255,.9);margin:0}
.city-cta-btns{display:flex;align-items:center;gap:16px;flex-shrink:0}
.city-cta-primary{display:inline-flex;align-items:center;gap:10px;background-color:#fff;color:var(--theme-color);padding:14px 28px;border-radius:6px;text-decoration:none;font-size:15px;font-weight:700;white-space:nowrap;transition:all .3s ease;border:2px solid var(--theme-color);box-shadow:0 4px 15px rgba(0,0,0,.15)}
.city-cta-primary:hover{background-color:var(--theme-color);color:#fff;border-color:#fff;box-shadow:0 6px 20px rgba(0,0,0,.2);transform:translateY(-2px)}
.city-cta-primary svg{width:18px;height:18px;fill:currentColor;transition:fill .3s ease}
.city-cta-secondary{display:inline-flex;align-items:center;justify-content:center;background-color:#fff;color:var(--theme-color);padding:13px 22px;border-radius:6px;text-decoration:none;font-size:14px;font-weight:600;white-space:nowrap;transition:all .3s ease;border:none;box-shadow:0 4px 10px rgba(0,0,0,.1)}
.city-cta-secondary:hover{background-color:rgba(255,255,255,.9);transform:translateY(-2px)}

/* === Footer === */
.city-footer{background:#1a1a1a;color:#bbb;padding:42px 0 20px;text-align:center;font-size:14px}
.city-footer .footer-links{margin-bottom:20px;font-size:14px}
.city-footer .footer-links a{color:#ccc;margin:0 10px;transition:color .2s}
.city-footer .footer-links a:hover{color:#fff;text-decoration:none}
.city-footer .footer-contact p{margin:5px 0;font-size:13px;color:#999}
.city-footer .copyright{margin-top:20px;padding-top:16px;border-top:1px solid #333;font-size:12px;color:#777}
.city-footer .copyright a{color:#777;margin-left:8px}
.city-footer .copyright a:hover{color:#ccc}

/* ===== 响应式 991.98px ===== */
@media (max-width:991.98px){
.container{padding:0 18px}
.case-grid{grid-template-columns:repeat(2,1fr);gap:18px}
.advantage-grid{gap:12px}
.advantage-card{padding:24px 12px}
.advantage-icon{font-size:40px}
.advantage-title{font-size:16px}
.advantage-desc{font-size:13px}
}

/* ===== 响应式 767.98px ===== */
@media (max-width:767.98px){
html{font-size:17px}
body{font-size:15px}
.container{padding:0 16px}
.city-header{padding:36px 0 8px}
.city-header h1{font-size:30px!important;letter-spacing:2px}
.city-header .subtitle{font-size:15px!important}
.city-header .phone-btn{margin-top:10px;padding:8px 24px;font-size:15px}
.back-links{flex-direction:column;gap:12px;margin:20px auto 0;max-width:150px}
.back-links .back-home{padding:10px 0;font-size:12px}
.city-section{padding:30px 0}
.section-box,.about-container,.advantage-container,.delivery-container,.service-container,.case-container,.news-container{padding:22px 16px;border-radius:10px}
.section-title{font-size:22px!important;margin-bottom:8px;padding-bottom:10px}
.section-title::after{width:46px;height:3px}
.section-subtitle{font-size:14px;margin-bottom:30px}
.faq-item summary{padding:14px 16px;gap:10px}
.faq-q-text{font-size:15px}
.faq-answer{padding:0 16px 16px 16px;font-size:14px}
.faq-q,.faq-a{width:24px;height:24px;font-size:13px}
.about-content{font-size:15px!important;line-height:1.85}
.about-content p{font-size:15px!important}
.about-content p:first-of-type{font-size:16px!important}
.advantage-grid{flex-wrap:wrap;justify-content:center;gap:10px}
.advantage-card{flex:0 0 calc(33.333% - 10px);padding:18px 10px}
.advantage-card:nth-child(4),.advantage-card:nth-child(5){flex:0 0 calc(33.333% - 10px)}
.advantage-icon{font-size:30px!important;margin-bottom:6px}
.advantage-title{font-size:15px!important;margin-bottom:4px}
.advantage-desc{font-size:13px!important;line-height:1.4;max-width:120px}
.delivery-list{padding-left:22px}
.delivery-item{padding:12px 14px;margin-bottom:8px}
.delivery-num{width:22px;height:22px;line-height:22px;font-size:11px;left:-20px;top:14px}
.delivery-icon{font-size:18px}
.delivery-title{font-size:15px!important}
.delivery-desc{font-size:14px!important;line-height:1.6}
.service-grid{gap:18px!important}
.service-card,.service-card:nth-child(even){flex-direction:column!important}
.service-card img{width:100%!important;height:auto!important;aspect-ratio:16/9!important;max-height:220px!important}
.service-card .service-desc{padding:18px 20px!important;font-size:15px!important;line-height:1.75!important}
.service-card .service-desc strong{font-size:16px!important;margin-bottom:8px!important}
.case-grid{grid-template-columns:1fr!important;gap:20px!important}
.case-card,.case-card img{width:100%!important}
.case-card img{height:150px!important;max-height:150px!important;min-height:150px!important;flex:0 0 150px!important}
.case-card .case-desc{width:100%!important;box-sizing:border-box!important;padding:12px 14px 8px!important;margin:0!important;font-size:14px!important;line-height:1.7!important;color:#555!important;flex:1 1 auto!important;display:block!important;overflow:visible!important}
.case-card .case-link{width:100%!important;box-sizing:border-box!important;display:block!important;padding:12px 14px!important;margin:0!important;font-size:13.5px!important;line-height:20px!important;color:var(--theme-color)!important;font-weight:700!important;text-align:center!important;background:color-mix(in srgb,var(--theme-color) 8%,#fff)!important;border-top:1px solid #eef1f4!important;text-decoration:none!important;flex:0 0 auto!important}
.news-item{flex-wrap:wrap;gap:6px;padding:12px 14px}
.news-cat{font-size:12px!important;padding:2px 10px}
.news-date{font-size:13px!important;min-width:72px}
.news-content{flex-basis:100%;order:3;font-size:15px!important;line-height:1.6}
.city-cta{padding:40px 16px}
.city-cta-inner{flex-direction:column;text-align:center;gap:28px}
.city-cta-btns{flex-direction:column;width:100%}
.city-cta-primary,.city-cta-secondary{width:100%;justify-content:center;text-align:center;box-sizing:border-box}
.city-footer{padding:34px 0 16px}
.city-footer .footer-links{font-size:13px;margin-bottom:16px}
.city-footer .footer-links a{font-size:13px;margin:0 6px}
.city-footer .footer-contact p{font-size:13px}
.city-footer .copyright{font-size:12px}
}

/* ===== 响应式 575.98px ===== */
@media (max-width:575.98px){
html{font-size:16px}
.container{padding:0 12px}
.city-header{padding:28px 0 34px}
.city-header h1{font-size:26px!important;letter-spacing:1px}
.city-header .subtitle{font-size:14px!important}
.city-header .phone-btn{font-size:13px;padding:7px 18px}
.back-links{max-width:100px;margin-top:16px}
.back-links .back-home{padding:8px 0;font-size:10px}
.city-section{padding:24px 0}
.section-box,.about-container,.advantage-container,.delivery-container,.service-container,.case-container,.news-container{padding:18px 14px;border-radius:8px}
.section-title{font-size:20px!important;margin-bottom:6px;padding-bottom:8px}
.section-title::after{width:40px;height:2px}
.section-subtitle{font-size:13px;margin-bottom:20px}
.faq-item summary{padding:12px 14px;gap:8px}
.faq-q-text{font-size:14px}
.faq-answer{padding:0 14px 14px 14px;font-size:13.5px}
.faq-q,.faq-a{width:22px;height:22px;font-size:12px}
.about-content{font-size:14px!important;line-height:1.8}
.about-content p{font-size:14px!important}
.about-content p:first-of-type{font-size:15px!important}
.advantage-grid{gap:8px}
.advantage-card{flex:0 0 calc(50% - 8px);padding:14px 6px}
.advantage-card:nth-child(4),.advantage-card:nth-child(5){flex:0 0 calc(50% - 8px)}
.advantage-icon{font-size:26px!important}
.advantage-title{font-size:14px!important}
.advantage-desc{font-size:12px!important;max-width:100px}
.delivery-list{padding-left:20px}
.delivery-item{padding:10px 12px}
.delivery-num{width:20px;height:20px;line-height:20px;font-size:10px;left:-18px;top:12px}
.delivery-title{font-size:14px!important}
.delivery-desc{font-size:13px!important}
.service-card img{max-height:190px!important}
.service-card .service-desc{padding:14px 16px!important;font-size:14px!important}
.service-card .service-desc strong{font-size:15px!important}
.case-card .case-desc{padding:10px 12px 8px!important;font-size:13.5px!important}
.case-card .case-link{padding:11px 14px!important;font-size:13.5px!important}
.news-item{padding:10px 12px}
.news-content{font-size:14px!important}
.news-date{font-size:12px!important;min-width:64px}
.city-cta{padding:32px 14px}
.city-cta-inner{gap:22px}
.city-cta-text h2{font-size:20px;line-height:1.35}
.city-cta-text p{font-size:13px}
.city-cta-btns{gap:12px}
.city-cta-primary{padding:12px 16px;font-size:14px;border-width:1.5px;border-radius:6px;min-height:44px}
.city-cta-primary svg{width:16px;height:16px}
.city-cta-secondary{padding:11px 16px;font-size:13px;border-radius:6px;min-height:44px}
.city-footer{padding:28px 0 14px}
.city-footer .footer-links a{margin:0 4px;font-size:12px}
.city-footer .footer-contact p{font-size:12px}
.city-footer .copyright{font-size:11px}
}

/* ===== 响应式 375px ===== */
@media (max-width:375px){
.city-header h1{font-size:22px!important;letter-spacing:0}
.city-header .subtitle{font-size:13px!important}
.city-header .phone-btn{font-size:12px;padding:6px 14px}
.back-links{max-width:90px}
.back-links .back-home{font-size:9px;padding:6px 0}
.section-title{font-size:18px!important}
.section-title::after{width:36px;height:2px}
.section-subtitle{font-size:12px}
.advantage-card{flex:0 0 100%!important;padding:12px 8px}
.advantage-icon{font-size:22px!important}
.advantage-title{font-size:13px!important}
.advantage-desc{font-size:11px!important;max-width:140px}
.delivery-num{width:18px;height:18px;line-height:18px;font-size:9px;left:-16px;top:10px}
.delivery-title{font-size:13px!important}
.delivery-desc{font-size:12px!important}
.service-card .service-desc{padding:12px 14px!important;font-size:13px!important}
.case-card img{height:120px!important;max-height:120px!important;min-height:120px!important;flex:0 0 120px!important}
.case-card .case-desc{font-size:12.5px!important;padding:10px 12px 6px!important}
.case-card .case-link{font-size:12.5px!important;padding:10px 12px!important}
.news-item{padding:8px 10px;gap:4px}
.news-cat{font-size:11px!important;padding:1px 8px}
.news-date{font-size:11px!important;min-width:56px}
.news-content{font-size:13px!important}
.city-cta{padding:28px 12px}
.city-cta-text h2{font-size:18px}
.city-cta-text p{font-size:12px}
.city-cta-primary,.city-cta-secondary{padding:10px 14px;font-size:12px;min-height:40px}
.city-footer{padding:24px 0 12px}
.city-footer .footer-links a{font-size:11px;margin:0 3px}
.city-footer .footer-contact p{font-size:11px}
.city-footer .copyright{font-size:10px}
}