:root{--red:#a71920;--red2:#741015;--dark:#171a1e;--gray:#59616b;--line:#e7e9ec;--bg:#f5f6f7;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:#25282d;font:16px/1.75 "Microsoft YaHei",Arial,sans-serif;background:#fff}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1200px,92%);margin:auto}.topbar{background:var(--dark);color:#d9dde1;font-size:13px}.topbar .container{height:38px;display:flex;align-items:center;justify-content:space-between}.header{background:#fff;box-shadow:0 2px 14px rgba(0,0,0,.08);position:relative;z-index:20}.header-main{height:92px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:14px}.brand img{width:66px;height:66px;object-fit:cover;object-position:50% 15%;border-radius:4px}.brand strong{display:block;font-size:21px;line-height:1.35;color:#222}.brand small{color:#8b1d22;letter-spacing:2px}.nav ul{list-style:none;margin:0;padding:0;display:flex}.nav li{position:relative}.nav>ul>li>a{display:block;padding:32px 15px 29px;font-weight:600}.nav>ul>li>a:hover,.nav .active{color:var(--red);border-bottom:3px solid var(--red)}.nav li ul{display:none;position:absolute;top:91px;left:0;min-width:150px;background:#fff;box-shadow:0 8px 22px rgba(0,0,0,.13);padding:8px 0}.nav li:hover ul{display:block}.nav li ul a{display:block;padding:9px 18px;white-space:nowrap}.nav li ul a:hover{background:#f6eeee;color:var(--red)}.menu-toggle{display:none;font-size:28px;color:var(--red)}.hero{height:620px;position:relative;overflow:hidden;background:#252a30}.hero-slide{height:620px;background:center/cover no-repeat;position:relative}.hero-slide:after,.inner-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,13,16,.78),rgba(11,13,16,.25) 60%,rgba(11,13,16,.12))}.hero-copy{position:absolute;z-index:2;top:50%;left:max(4%,calc((100% - 1200px)/2));transform:translateY(-50%);color:#fff;max-width:660px}.hero-copy .eyebrow{font-size:16px;letter-spacing:5px;color:#f2c6c8}.hero-copy h1{font-size:52px;line-height:1.18;margin:14px 0}.hero-copy p{font-size:20px;color:#e4e7e9}.btn{display:inline-block;margin-top:20px;padding:12px 28px;background:var(--red);color:#fff;border:1px solid var(--red)}.btn.ghost{margin-left:10px;background:transparent;border-color:#fff}.section{padding:78px 0}.section.alt{background:var(--bg)}.section-head{text-align:center;margin-bottom:42px}.section-head span{color:var(--red);letter-spacing:4px;font-size:13px}.section-head h2{font-size:34px;margin:6px 0 10px}.section-head p{color:#777;margin:0}.grid{display:grid;gap:24px}.services{grid-template-columns:repeat(4,1fr)}.card{background:#fff;border:1px solid var(--line);transition:.25s;overflow:hidden}.card:hover{transform:translateY(-5px);box-shadow:0 12px 30px rgba(0,0,0,.1)}.card img{width:100%;height:210px;object-fit:cover}.card-body{padding:23px}.card h3{margin:0 0 8px;font-size:20px}.card p{margin:0;color:#6c7279;font-size:14px}.about-grid{grid-template-columns:1.05fr .95fr;align-items:center}.about-img{position:relative}.about-img img{height:430px;width:100%;object-fit:cover}.about-badge{position:absolute;right:-18px;bottom:-18px;background:var(--red);color:#fff;padding:20px 25px}.about-copy h2{font-size:36px;line-height:1.35;margin:0 0 18px}.about-copy p{color:#626970}.advantages{grid-template-columns:repeat(4,1fr)}.adv{text-align:center;padding:28px 18px;background:#fff;border-top:3px solid var(--red)}.adv b{font-size:34px;color:var(--red);display:block}.cases{grid-template-columns:repeat(3,1fr)}.case-card{position:relative;overflow:hidden}.case-card img{width:100%;height:280px;object-fit:cover;transition:.35s}.case-card:hover img{transform:scale(1.05)}.case-card div{position:absolute;left:0;right:0;bottom:0;padding:22px;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.85))}.process{grid-template-columns:repeat(6,1fr)}.step{text-align:center;position:relative}.step b{display:inline-grid;place-items:center;width:54px;height:54px;border-radius:50%;background:var(--red);color:#fff;font-size:20px}.step h3{font-size:17px}.news{grid-template-columns:repeat(3,1fr)}.news-item{padding:26px;background:#fff;border:1px solid var(--line)}.news-item time{color:var(--red);font-size:13px}.cta{background:linear-gradient(90deg,#781015,#b51d25);color:#fff;padding:48px 0}.cta .container{display:flex;align-items:center;justify-content:space-between}.cta h2{margin:0;font-size:30px}.footer{background:#171a1e;color:#afb5bb;padding:55px 0 25px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.3fr;gap:50px}.footer h3{color:#fff}.footer .copyright{border-top:1px solid #30343a;margin-top:35px;padding-top:22px;font-size:13px}.inner-hero{height:330px;background:center/cover no-repeat;position:relative;color:#fff}.inner-title{position:absolute;z-index:2;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center}.inner-title h1{font-size:40px;margin:0}.breadcrumb{font-size:14px;margin-top:8px}.page-layout{display:grid;grid-template-columns:250px 1fr;gap:42px}.sidebar{border:1px solid var(--line);align-self:start}.sidebar-title{padding:22px;background:var(--red);color:#fff;font-size:22px}.sidebar a{display:block;padding:13px 20px;border-bottom:1px solid var(--line)}.sidebar a:hover{color:var(--red);background:#faf5f5}.content-title{font-size:30px;margin:0 0 24px;padding-bottom:15px;border-bottom:1px solid var(--line)}.content-body img{height:auto!important}.list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.list-card{border:1px solid var(--line);background:#fff}.list-card img{width:100%;height:220px;object-fit:cover}.list-card div{padding:20px}.article-list article{display:grid;grid-template-columns:110px 1fr;gap:22px;padding:25px 0;border-bottom:1px solid var(--line)}.article-list time{font-size:25px;color:var(--red)}.article-list h3{margin:0}.detail-cover{width:100%;max-height:480px;object-fit:cover;margin-bottom:25px}.article-meta{text-align:center;color:#999;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:25px}.pager{margin-top:35px;padding-top:20px;border-top:1px solid var(--line)}.pagination{text-align:center;margin-top:35px}.pagination a{display:inline-block;padding:7px 12px;border:1px solid var(--line);margin:2px}.contact-box{background:var(--bg);padding:30px;border-left:4px solid var(--red)}
@media(max-width:900px){.topbar{display:none}.header-main{height:72px}.brand img{width:50px;height:50px}.brand strong{font-size:15px}.brand small{font-size:10px}.menu-toggle{display:block}.nav{display:none;position:absolute;left:0;right:0;top:72px;background:#fff}.nav.open{display:block}.nav ul{display:block}.nav>ul>li>a{padding:12px 5%;border-bottom:1px solid var(--line)}.nav li ul{display:none!important}.hero,.hero-slide{height:520px}.hero-copy{left:5%;right:5%}.hero-copy h1{font-size:36px}.services,.advantages{grid-template-columns:repeat(2,1fr)}.about-grid,.footer-grid,.page-layout{grid-template-columns:1fr}.cases,.news,.list-grid{grid-template-columns:repeat(2,1fr)}.process{grid-template-columns:repeat(3,1fr)}.sidebar{display:none}.cta .container{display:block}.inner-hero{height:260px}}
@media(max-width:560px){.section{padding:52px 0}.hero,.hero-slide{height:470px}.hero-copy h1{font-size:30px}.hero-copy p{font-size:16px}.services,.advantages,.cases,.news,.list-grid{grid-template-columns:1fr}.process{grid-template-columns:repeat(2,1fr)}.about-img img{height:300px}.card img,.list-card img{height:210px}.inner-title h1{font-size:32px}.article-list article{grid-template-columns:1fr}.brand strong{max-width:220px}.footer-grid{gap:22px}}
.footer .copyright{display:flex;align-items:center;justify-content:space-between;gap:20px}.footer .copyright span:first-child{text-align:left}.footer .copyright span:last-child{text-align:right}.footer-grid{grid-template-columns:1.35fr .8fr 1.25fr .65fr}.footer-service-list a{display:block}.footer-weixin img{width:118px;height:118px;object-fit:cover;background:#fff;padding:5px}.footer-weixin p{margin:8px 0 0;font-size:13px}.home-about-content{color:#626970;line-height:2;white-space:normal}.cta-phone-pc{cursor:default}.cta-phone-mobile{display:none}.brand{display:block}.brand img{width:auto;height:76px;max-width:260px;object-fit:contain;object-position:left center;border-radius:0}.news-item{padding:0;overflow:hidden}.news-item>img{width:100%;height:190px;object-fit:cover}.news-body{padding:22px 26px}.article-list article{grid-template-columns:180px 80px 1fr;align-items:center}.article-thumb img{width:180px;height:120px;object-fit:cover}.article-date{text-align:center}.article-date time{display:block}.article-date small{color:#999}@media(max-width:900px){.brand img{width:auto;height:56px;max-width:180px}.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.footer .copyright{display:block}.footer .copyright span{display:block}.footer .copyright span:last-child{text-align:left;margin-top:8px}.footer-grid{grid-template-columns:1fr}.cta-phone-pc{display:none}.cta-phone-mobile{display:inline-block}.news-item>img{height:210px}.article-list article{grid-template-columns:1fr}.article-thumb img{width:100%;height:210px}.article-date{text-align:left}}

/* 首页新版 */
.home-v2 .section{padding:92px 0}.home-swiper{height:100%}.home-kicker{color:var(--red);font-size:13px;font-weight:700;letter-spacing:4px;text-transform:uppercase}.business-entry-wrap{position:relative;z-index:5;margin-top:-44px}.business-entry-grid{display:grid;grid-template-columns:1fr 1fr;box-shadow:0 18px 50px rgba(12,17,22,.15)}.business-entry{min-height:170px;padding:34px 38px;background:#fff;display:grid;grid-template-columns:60px 1fr 30px;gap:20px;align-items:center;border-right:1px solid var(--line);transition:.25s}.business-entry:last-child{border-right:0}.business-entry:hover{background:var(--red);color:#fff;transform:translateY(-5px)}.business-entry:hover p,.business-entry:hover small{color:#f5dadd}.business-no{font:700 34px/1 Arial;color:var(--red)}.business-entry:hover .business-no{color:#fff}.business-entry small{color:#9b262c;letter-spacing:2px}.business-entry h2{margin:3px 0 5px;font-size:27px}.business-entry p{margin:0;color:#747b82;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.business-entry>b{font-size:25px}.about-v2-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:70px;align-items:center}.about-v2-media{position:relative}.about-v2-media>img{width:100%;height:490px;object-fit:cover}.about-v2-mark{position:absolute;right:-24px;bottom:-24px;width:260px;padding:22px 26px;background:var(--red);color:#fff}.about-v2-mark span{display:block;font-size:12px;letter-spacing:4px}.about-v2-mark strong{display:block;margin-top:5px;font-size:15px}.about-v2-copy h2{font-size:40px;margin:10px 0 20px}.about-contact-row{display:flex;gap:24px;margin-top:24px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:14px}.text-link{display:inline-block;margin-top:25px;font-weight:700}.text-link b{color:var(--red);margin-left:8px}.service-showcase{background:#f4f5f6}.home-title-row{display:flex;align-items:end;justify-content:space-between;margin-bottom:42px}.home-title-row h2{font-size:38px;margin:5px 0 0}.home-title-row>p{color:#7b8187}.service-v2-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.service-v2-card{background:#fff;box-shadow:0 7px 26px rgba(17,22,27,.06);transition:.25s}.service-v2-card:hover{transform:translateY(-7px);box-shadow:0 18px 38px rgba(17,22,27,.12)}.service-v2-img{position:relative;overflow:hidden}.service-v2-img img{width:100%;height:210px;object-fit:cover;transition:.4s}.service-v2-card:hover img{transform:scale(1.05)}.service-v2-img span{position:absolute;left:0;bottom:0;padding:7px 13px;background:var(--red);color:#fff;font-size:12px}.service-v2-body{padding:22px}.service-v2-body h3{font-size:19px;margin:0 0 8px}.service-v2-body p{height:50px;margin:0 0 13px;color:#747a80;font-size:14px;overflow:hidden}.service-v2-body b{font-size:13px;color:var(--red)}.home-case-v2{background:#171b20;color:#fff}.home-title-row.light .home-kicker{color:#e56970}.home-title-row.light .text-link{color:#fff}.case-v2-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.case-v2-card{position:relative;height:330px;overflow:hidden;background:#292e34}.case-v2-card img{width:100%;height:100%;object-fit:cover;opacity:.72;transition:.4s}.case-v2-card:hover img{transform:scale(1.06);opacity:.5}.case-v2-card>div{position:absolute;left:0;right:0;bottom:0;padding:70px 25px 24px;background:linear-gradient(transparent,rgba(9,11,13,.95))}.case-v2-card small{color:#e78a8f}.case-v2-card h3{margin:5px 0;font-size:20px}.case-v2-card p{margin:0;color:#bdc2c6;font-size:13px}.news-v2-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.news-v2-card{border:1px solid var(--line);background:#fff;transition:.25s}.news-v2-card:hover{border-color:#d1a1a4;box-shadow:0 12px 32px rgba(17,22,27,.08)}.news-v2-card img{width:100%;height:205px;object-fit:cover}.news-v2-content{padding:22px 24px}.news-v2-content time{color:var(--red);font-size:12px}.news-v2-content h3{margin:5px 0 8px;font-size:19px}.news-v2-content p{margin:0;color:#777e84;font-size:14px}.home-contact-strip{background:var(--red);color:#fff;padding:48px 0}.home-contact-strip>.container{display:flex;align-items:center;justify-content:space-between;gap:45px}.home-contact-strip small{letter-spacing:3px;color:#efb8bb}.home-contact-strip h2{margin:5px 0;font-size:26px}.home-contact-strip p{margin:0;color:#f0d4d6}.home-contact-data{display:flex;gap:45px}.home-contact-data span{font-size:12px;color:#eebfc2}.home-contact-data strong{display:block;color:#fff;font-size:18px;margin-top:4px;white-space:nowrap}
@media(max-width:1000px){.service-v2-grid{grid-template-columns:repeat(2,1fr)}.about-v2-grid{gap:40px}.case-v2-grid,.news-v2-grid{grid-template-columns:repeat(2,1fr)}.home-contact-strip>.container{display:block}.home-contact-data{margin-top:25px}}
@media(max-width:720px){.home-v2 .section{padding:60px 0}.business-entry-wrap{margin-top:0}.business-entry-grid{grid-template-columns:1fr}.business-entry{padding:25px 22px;min-height:130px;border-right:0;border-bottom:1px solid var(--line)}.business-entry p{white-space:normal}.about-v2-grid{grid-template-columns:1fr}.about-v2-media>img{height:330px}.about-v2-mark{right:0;bottom:0;width:auto}.about-v2-copy h2,.home-title-row h2{font-size:30px}.about-contact-row{display:block}.about-contact-row span{display:block}.home-title-row{display:block}.home-title-row>p{margin-top:8px}.service-v2-grid,.case-v2-grid,.news-v2-grid{grid-template-columns:1fr}.case-v2-card{height:300px}.home-contact-data{display:grid;grid-template-columns:1fr 1fr;gap:18px}.home-contact-strip h2{font-size:21px}}
.home-about-content{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:5;overflow:hidden}

/* 新闻列表新版 */
.news-list-page{padding-top:68px}.news-list-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:28px;padding-bottom:18px;border-bottom:2px solid var(--dark)}.news-list-heading h1{margin:0;font-size:34px}.news-list-heading span{color:var(--red);font-size:12px;letter-spacing:3px}.news-list-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.news-list-card{min-width:0;background:#fff;border:1px solid var(--line);overflow:hidden;transition:.25s}.news-list-card:hover{transform:translateY(-5px);border-color:#d6a6a9;box-shadow:0 14px 35px rgba(17,22,27,.1)}.news-list-image{height:230px;position:relative;overflow:hidden;background:#eceeef}.news-list-image img{width:100%;height:100%;object-fit:cover;transition:.4s}.news-list-card:hover .news-list-image img{transform:scale(1.05)}.news-list-image time{position:absolute;left:0;bottom:0;padding:8px 15px;background:var(--red);color:#fff;font-size:12px}.news-list-copy{padding:25px 26px 27px}.news-list-copy small{color:var(--red)}.news-list-copy h2{min-height:58px;margin:7px 0 10px;font-size:21px;line-height:1.45}.news-list-copy p{min-height:72px;margin:0 0 17px;color:#737a81;font-size:14px;line-height:1.8}.news-list-copy b{color:var(--red);font-size:13px}.news-list-main .pagination{margin-top:45px}
@media(max-width:1050px){.news-list-grid{grid-template-columns:1fr}.news-list-image{height:300px}.news-list-copy h2,.news-list-copy p{min-height:0}}
@media(max-width:900px){.news-list-page{padding-top:50px}.news-list-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.news-list-image{height:220px}}
@media(max-width:620px){.news-list-grid{grid-template-columns:1fr;gap:20px}.news-list-image{height:220px}.news-list-heading{display:block}.news-list-heading span{display:block;margin-top:5px}.news-list-copy{padding:21px}.news-list-copy h2{font-size:19px}}

/* 首页联系区配色优化 */
.home-contact-strip{position:relative;background:#f3f4f5;color:#25292d;padding:56px 0;border-top:1px solid #e1e3e5;border-bottom:1px solid #e1e3e5}.home-contact-strip:after{display:none}.home-contact-strip>.container{position:relative}.home-contact-strip h2{font-size:28px;color:#25292d}.home-contact-strip p{color:#747a80}.home-contact-data{padding:0;background:none;border:0}.home-contact-data span{color:#777e84}.home-contact-data strong{color:#8f1b23}

/* 首页服务标题区 */
.service-showcase .home-title-row{position:relative;align-items:center;padding:0 0 25px;border-bottom:1px solid #dfe2e5}.service-showcase .home-title-row:after{content:"";position:absolute;left:0;bottom:-1px;width:86px;height:3px;background:var(--red)}.service-showcase .home-title-row>p{max-width:520px;margin:0;padding-left:30px;border-left:1px solid #d6dade;text-align:right;line-height:1.8}.service-showcase .home-kicker{margin-bottom:4px}@media(max-width:720px){.service-showcase .home-title-row>p{max-width:none;margin-top:12px;padding:0;border-left:0;text-align:left}}
.service-showcase .home-title-row>.text-link{margin:0;color:#30353a}.service-showcase .home-title-row>.text-link:hover{color:var(--red)}
/* 新闻列表恢复横向布局 */
.article-list article{display:grid;grid-template-columns:210px 90px minmax(0,1fr);gap:26px;align-items:center;padding:30px 0;border-bottom:1px solid var(--line)}.article-thumb img{width:210px;height:140px;object-fit:cover}.article-date{text-align:center}.article-date time{display:block;color:var(--red);font-size:27px;line-height:1.2}.article-date small{display:block;margin-top:8px;color:#999}.article-list h3{margin:0 0 12px;font-size:20px}.article-list p{margin:0;color:#747b82;line-height:1.8}@media(max-width:720px){.article-list article{grid-template-columns:120px minmax(0,1fr);gap:16px}.article-thumb img{width:120px;height:90px}.article-date{display:none}.article-list h3{font-size:17px;margin-bottom:6px}.article-list p{font-size:13px}}@media(max-width:480px){.article-list article{grid-template-columns:1fr}.article-thumb img{width:100%;height:210px}}

/* 首页整体排版优化 */
.home-v2{overflow-x:hidden}.home-v2 .container{width:min(1320px,90%)}
.home-v2 .hero,.home-v2 .hero-slide{height:min(650px,68vw)}.home-v2 .hero-copy{left:max(5%,calc((100% - 1320px)/2));max-width:720px}.home-v2 .hero-copy h1{font-size:clamp(38px,4vw,58px)}
.home-v2 .hero-copy h1{margin:0 0 18px}.home-v2 .hero-copy p{max-width:680px;margin:0;line-height:1.8}
.home-v2 .swiper-slide.hero-slide{background-size:cover;background-position:center;transform:scale(1.06);transition:transform 6.5s ease-out}
.home-v2 .swiper-slide-active.hero-slide,.home-v2 .swiper-slide-duplicate-active.hero-slide{transform:scale(1)}
.home-v2 .hero-copy{opacity:0;transform:translate3d(0,22px,0);transition:opacity .95s ease .2s,transform .95s ease .2s}
.home-v2 .swiper-slide-active .hero-copy,.home-v2 .swiper-slide-duplicate-active .hero-copy{opacity:1;transform:translate3d(0,0,0)}
.home-v2 .hero-slide:after{background:linear-gradient(90deg,rgba(8,10,14,.82),rgba(8,10,14,.38) 48%,rgba(8,10,14,.18) 72%,rgba(120,18,24,.16))}
.business-entry-grid{border-radius:2px;overflow:hidden}.business-entry{min-width:0}.business-entry>div{min-width:0}.business-entry h2,.service-v2-body h3,.news-v2-content h3{line-height:1.45}.business-entry>b{line-height:1}
.home-about-v2{background:#fff}.about-v2-grid{grid-template-columns:minmax(0,.98fr) minmax(0,1.02fr);gap:clamp(45px,5vw,76px)}.about-v2-media,.about-v2-copy{min-width:0}.about-v2-media>img{height:390px;object-position:center 42%}.about-v2-copy h2{line-height:1.3}.home-about-content{font-size:16px;line-height:2;-webkit-line-clamp:5}
.service-showcase{background:#f3f4f5}.service-v2-grid{gap:26px}.service-v2-card{display:flex;flex-direction:column;min-width:0;overflow:hidden}.service-v2-body{display:flex;flex:1;flex-direction:column;min-height:190px}.service-v2-body p{height:auto;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2}.service-v2-body b{margin-top:auto}
.case-v2-grid,.news-v2-grid{gap:28px}.news-v2-card{display:flex;flex-direction:column;min-width:0;overflow:hidden}.news-v2-content{display:flex;flex:1;flex-direction:column;min-height:170px}.news-v2-content h3{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}.news-v2-content p{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}
.home-contact-strip>.container{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center}.home-contact-data{display:grid;grid-template-columns:repeat(3,minmax(130px,auto));gap:clamp(28px,4vw,60px)}
@media(max-width:1100px){.home-v2 .container{width:min(940px,92%)}.home-v2 .hero,.home-v2 .hero-slide{height:560px}.about-v2-grid{gap:42px}.about-v2-media>img{height:350px}.service-v2-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.home-contact-strip>.container{grid-template-columns:1fr}.home-contact-data{margin-top:26px}}
@media(max-width:760px){.home-v2 .section{padding:64px 0}.home-v2 .hero,.home-v2 .hero-slide{height:500px}.home-v2 .hero-copy{left:5%;right:5%}.home-v2 .hero-copy .eyebrow{font-size:12px;letter-spacing:3px}.home-v2 .hero-copy h1{font-size:34px}.home-v2 .hero-copy p{font-size:16px}.business-entry{grid-template-columns:48px minmax(0,1fr) 22px;gap:13px}.business-entry h2{font-size:23px}.about-v2-grid{grid-template-columns:1fr}.about-v2-media>img{height:300px}.home-title-row{align-items:flex-start}.service-v2-grid,.case-v2-grid,.news-v2-grid{grid-template-columns:1fr}.service-v2-img img,.news-v2-card img{height:240px}.service-v2-body,.news-v2-content{min-height:0}.home-contact-data{grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.home-contact-data strong{font-size:16px;white-space:normal}}
@media(max-width:520px){.home-v2 .container{width:90%}.home-v2 .hero,.home-v2 .hero-slide{height:450px}.btn{padding:10px 18px}.business-entry{padding:22px 18px}.business-entry small{letter-spacing:1px}.about-v2-media>img{height:280px}.about-v2-copy h2,.home-title-row h2{font-size:28px}.home-kicker{letter-spacing:2px}.service-v2-img img,.news-v2-card img{height:215px}.home-contact-data{grid-template-columns:1fr}.home-contact-data span{padding-top:12px;border-top:1px solid #dde0e2}.footer{padding-top:42px}}
.home-v2 h1,.home-v2 h2,.home-v2 h3,.home-v2 p,.home-v2 strong{overflow-wrap:anywhere}.home-title-row>p{max-width:560px}

/* 返回顶部 */
.back-to-top{position:fixed;right:28px;bottom:34px;z-index:100;width:50px;height:50px;padding:0;border:0;border-radius:3px;background:var(--red);color:#fff;box-shadow:0 8px 24px rgba(27,30,34,.22);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .25s,visibility .25s,transform .25s,background .25s}.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top:hover{background:var(--red2)}.back-to-top span{display:block;font:700 22px/20px Arial}.back-to-top em{display:block;margin-top:3px;font:normal 11px/14px "Microsoft YaHei",sans-serif}.back-to-top:focus-visible{outline:3px solid rgba(167,25,32,.28);outline-offset:3px}@media(max-width:720px){.back-to-top{right:15px;bottom:20px;width:44px;height:44px}.back-to-top span{font-size:20px;line-height:17px}.back-to-top em{font-size:10px}}

/* 栏目大图描述 */
.inner-title{width:min(820px,88%)}.inner-title h1{line-height:1.25}.sort-description{max-width:760px;margin:14px auto 0;color:#d9dde1;font-size:16px;line-height:1.8;text-shadow:0 1px 2px rgba(0,0,0,.35)}@media(max-width:720px){.sort-description{margin-top:10px;font-size:14px;line-height:1.65}}

/* 移动端二级栏目导航 */
.submenu-toggle{display:none}@media(max-width:900px){.nav.open{max-height:calc(100vh - 72px);overflow-y:auto;box-shadow:0 12px 26px rgba(0,0,0,.12)}.nav>ul>li.has-submenu{position:relative}.nav>ul>li.has-submenu>a{padding-right:68px}.submenu-toggle{display:grid;place-items:center;position:absolute;z-index:2;top:5px;right:4%;width:38px;height:38px;padding:0;border:0;background:#f3f4f5;color:var(--red);font:400 24px/1 Arial;cursor:pointer}.nav li.submenu-open>ul{display:block!important;position:static;min-width:0;padding:5px 0;background:#f5f6f7;box-shadow:inset 3px 0 0 var(--red)}.nav li.submenu-open>ul li a{padding:10px 9%;border-bottom:1px solid #e4e6e8;color:#545b62;font-size:15px;font-weight:500;white-space:normal}.nav li.submenu-open>ul li:last-child a{border-bottom:0}}

/* 服务栏目列表卡片紧凑化 */
.list-grid{align-items:start}.list-card{align-self:start;overflow:hidden}.list-card>div{padding:16px 18px}.list-card h3{margin:0 0 6px;font-size:18px;line-height:1.5}.list-card p{margin:0;color:#6c7279;font-size:14px;line-height:1.65}@media(max-width:560px){.list-card>div{padding:14px 16px}.list-card h3{font-size:17px}}

/* 移动端全屏手风琴菜单 */
@media(max-width:900px){body.mobile-menu-open{overflow:hidden;touch-action:none}.nav{position:fixed;top:72px;right:0;bottom:0;left:0;width:100%;height:calc(100vh - 72px);height:calc(100dvh - 72px);background:#fff}.nav.open{display:block;height:calc(100vh - 72px);height:calc(100dvh - 72px);max-height:none;overflow-x:hidden;overflow-y:auto;overscroll-behavior:contain}.nav>ul{min-height:100%;padding-bottom:28px;background:#fff}.mobile-menu-open .back-to-top{display:none}.menu-toggle{width:42px;text-align:center;font-size:32px;line-height:1}}

/* 首页联系信息区手机端 */
@media(max-width:560px){.home-contact-strip{padding:30px 0}.home-contact-strip>.container{display:block;width:90%}.home-contact-strip h2{margin:0 0 4px;font-size:21px;line-height:1.4}.home-contact-strip p{margin:0;font-size:13px;line-height:1.65}.home-contact-data{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin-top:20px;border-top:1px solid #dadddf;border-bottom:1px solid #dadddf}.home-contact-data span{min-width:0;padding:12px 0;border-top:0;color:#777e84;font-size:12px;line-height:1.4}.home-contact-data span:nth-child(1){padding-right:12px}.home-contact-data span:nth-child(2){padding-left:12px;border-left:1px solid #dadddf}.home-contact-data span:nth-child(3){grid-column:1/-1;padding:12px 0;border-top:1px solid #dadddf}.home-contact-data strong{margin-top:3px;color:#8f1b23;font-size:16px;line-height:1.45;white-space:normal}.back-to-top{right:12px;bottom:16px;width:40px;height:40px}.back-to-top span{font-size:18px;line-height:15px}.back-to-top em{font-size:9px;line-height:12px}}

/* Footer 响应式排版 */
.footer{padding:58px 0 24px}.footer-grid{grid-template-columns:minmax(0,1.45fr) minmax(150px,.75fr) minmax(260px,1.15fr) minmax(130px,.55fr);gap:clamp(30px,4vw,64px);align-items:start}.footer-grid>div{min-width:0}.footer h3{margin:0 0 16px;font-size:18px;line-height:1.45}.footer p{margin:0;color:#aeb4ba;font-size:14px;line-height:1.9;overflow-wrap:anywhere}.footer-service-list{display:grid;gap:7px}.footer-service-list a{color:#aeb4ba;font-size:14px;line-height:1.7;transition:color .2s}.footer-service-list a:hover{color:#fff}.footer-contact p{line-height:2}.footer-weixin img{width:110px;height:110px}.footer-weixin p{line-height:1.6}.footer .copyright{line-height:1.8}.footer .copyright span{min-width:0;overflow-wrap:anywhere}.footer .copyright a:hover{color:#fff}
@media(max-width:1000px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 52px}.footer-weixin{display:grid;grid-template-columns:110px minmax(0,1fr);grid-template-areas:"title title" "qr note";column-gap:18px;align-items:center}.footer-weixin h3{grid-area:title}.footer-weixin img{grid-area:qr}.footer-weixin p{grid-area:note}.footer .copyright{align-items:flex-start}}
@media(max-width:620px){.footer{padding:34px 0 18px}.footer .container{width:90%}.footer-grid{display:block}.footer-grid>div{padding:19px 0;border-bottom:1px solid #2d3237}.footer-grid>div:first-child{padding-top:0}.footer-grid>div:last-child{border-bottom:0}.footer h3{margin-bottom:10px;font-size:17px}.footer p,.footer-service-list a{font-size:13px}.footer-service-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 18px}.footer-contact p{line-height:1.9}.footer-weixin{display:grid;grid-template-columns:88px minmax(0,1fr);grid-template-areas:"title title" "qr note";gap:10px 16px}.footer-weixin img{width:88px;height:88px}.footer-weixin p{margin:0;font-size:12px}.footer .copyright{display:block;margin-top:10px;padding-top:17px;font-size:11px;line-height:1.75}.footer .copyright span{display:block;text-align:left!important}.footer .copyright span+span{margin-top:8px}}

/* 内页移动端字号与布局 */
@media(max-width:720px){body:not(.home-v2){font-size:14px}.inner-hero{height:210px}.inner-title{width:88%}.inner-title h1{font-size:24px;line-height:1.25}.sort-description{max-width:92%;margin-top:8px;font-size:12px;line-height:1.55}.section{padding:38px 0}.page-layout{display:block}.page-layout>div,.page-layout>article{min-width:0}.content-title{margin:0 0 18px;padding-bottom:10px;font-size:20px;line-height:1.4;overflow-wrap:anywhere}.article-meta{margin-bottom:18px;padding-bottom:11px;font-size:11px;line-height:1.65}.content-body{font-size:14px;line-height:1.8;overflow-wrap:anywhere}.content-body p{margin:0 0 14px}.content-body h1{font-size:21px;line-height:1.4}.content-body h2{font-size:19px;line-height:1.45}.content-body h3{font-size:17px;line-height:1.5}.content-body img{max-width:100%;height:auto!important}.detail-cover{max-height:300px;margin-bottom:18px}.list-grid{gap:15px}.list-card img{height:185px}.list-card h3{font-size:16px}.list-card p{font-size:12px}.pager{margin-top:23px;padding-top:14px;font-size:12px;line-height:1.85}.pagination{margin-top:23px;font-size:12px}.pagination a{padding:5px 9px}.contact-box{padding:18px 16px}.contact-box h2{font-size:19px}}
@media(max-width:480px){.inner-hero{height:195px}.inner-title h1{font-size:22px}.sort-description{font-size:11px}.section{padding:32px 0}.content-title{font-size:19px}.article-meta{font-size:10px}.content-body{font-size:13px}.content-body h1{font-size:20px}.content-body h2{font-size:18px}.content-body h3{font-size:16px}.list-card img{height:170px}}
@media(max-width:720px){html,body{max-width:100%;overflow-x:hidden}.inner-title h1,.sort-description,.content-title,.content-body h1,.content-body h2,.content-body h3{max-width:100%;white-space:normal!important;word-break:break-all;overflow-wrap:anywhere}.footer .copyright,.footer .copyright span{max-width:100%;white-space:normal!important;word-break:break-word;overflow-wrap:anywhere}}
@media(max-width:720px){.content-title[style*="text-align:center"]{text-align:left!important}}

/* 移动端固定顶部导航 */
@media(max-width:900px){body{padding-top:72px}.header{position:fixed;z-index:1000;top:0;right:0;left:0;width:100%}.header-main{height:72px}.nav{z-index:999}.mobile-menu-open .header{box-shadow:0 2px 14px rgba(0,0,0,.08)}}

/* 横版品牌 Logo 与栏目副名称长度保护 */
.brand img{width:440px;height:72px;object-fit:contain;object-position:left center;border-radius:0}.home-kicker{display:inline-block;max-width:min(100%,420px);line-height:1.5;letter-spacing:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;vertical-align:bottom}
@media(max-width:900px){.brand img{width:min(330px,calc(100vw - 112px));height:54px}.home-kicker{max-width:100%;letter-spacing:2px}}

/* PC 全站统一内容宽度，防止页面切换时左右跳动 */
@media(min-width:901px){html{overflow-y:scroll}.container,.home-v2 .container{width:min(1200px,92%)}.home-v2 .hero-copy{left:max(4%,calc((100% - 1200px)/2))}}

/* 首页工程服务拆分 */
.installation-showcase{background:#fff}.installation-showcase .service-v2-card{border:1px solid var(--line);box-shadow:0 7px 26px rgba(17,22,27,.04)}

/* 首页 / 栏目 Banner — 参考 9645 全幅图 + CSS 遮罩 + 淡入轮播 */
.jddj-inner-banner,.jddj-hero-slider{width:100%;isolation:isolate;contain:layout paint;transform:translateZ(0);backface-visibility:hidden}
.jddj-inner-banner>img,.jddj-hero-slide-image{transform:translateZ(0);backface-visibility:hidden;will-change:transform}
.jddj-hero-slider{position:relative;height:650px;overflow:hidden;background:var(--dark);margin-top:0}
.jddj-hero-slides,.jddj-hero-slide{position:absolute;inset:0}
.jddj-hero-slide{opacity:0;visibility:hidden;transition:opacity .8s ease,visibility .8s ease}
.jddj-hero-slide:first-child{opacity:1;visibility:visible}
.jddj-hero-slider.is-ready .jddj-hero-slide{opacity:0;visibility:hidden}
.jddj-hero-slider.is-ready .jddj-hero-slide.is-active{opacity:1;visibility:visible}
.jddj-hero-slide-image{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;display:block}
.jddj-hero-shade{position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(8,10,14,.82),rgba(8,10,14,.38) 48%,rgba(8,10,14,.18) 72%,rgba(120,18,24,.12))}
.jddj-hero-inner{position:relative;z-index:2;padding-top:150px;color:#fff}
.jddj-hero-inner h1{max-width:760px;font:500 clamp(32px,4vw,58px)/1.25 STSong,"Songti SC",serif;color:#fff;letter-spacing:2px;margin:0 0 24px}
.jddj-hero-lead{max-width:680px;margin:0;font-size:18px;line-height:1.85;color:rgba(255,255,255,.88)}
.jddj-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.jddj-btn{display:inline-flex;align-items:center;justify-content:center;min-width:140px;height:46px;padding:0 24px;font-size:15px;border-radius:2px;transition:.25s}
.jddj-btn-primary{background:var(--red);color:#fff;border:1px solid var(--red)}
.jddj-btn-primary:hover{background:var(--red2);border-color:var(--red2);color:#fff}
.jddj-btn-line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.72)}
.jddj-btn-line:hover{background:#fff;color:var(--dark);border-color:#fff}
.jddj-hero-dots{position:absolute;z-index:5;left:50%;bottom:30px;transform:translateX(-50%);display:flex;gap:10px}
.jddj-hero-dots button{width:42px;height:4px;border:0;padding:0;background:rgba(255,255,255,.55);cursor:pointer;transition:.25s}
.jddj-hero-dots button.is-active{background:var(--red);width:62px}
.jddj-inner-banner{position:relative;height:300px;overflow:hidden;background:var(--dark)}
.jddj-inner-banner>img{width:100%;height:100%;object-fit:cover;object-position:center;display:block}
.jddj-inner-banner-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,10,14,.78),rgba(8,10,14,.28))}
.jddj-inner-banner-copy{position:absolute;z-index:2;left:50%;top:50%;transform:translate(-50%,-50%);width:min(820px,88%);text-align:center;color:#fff}
.jddj-inner-banner-copy h1{font:500 clamp(24px,3vw,38px)/1.3 STSong,"Songti SC",serif;margin:0 0 12px}
.jddj-inner-banner-copy .sort-description{max-width:650px;margin:0 auto;color:rgba(255,255,255,.85);font-size:16px;line-height:1.8;text-shadow:none}
.home-v2 .business-entry-wrap{margin-top:0}
@media(max-width:900px){.jddj-hero-slider{height:520px}.jddj-hero-inner{padding-top:115px}.jddj-hero-inner h1{font-size:42px}.jddj-inner-banner{height:240px}.jddj-hero-lead{font-size:16px}}
@media(max-width:600px){.jddj-hero-slider{height:480px}.jddj-hero-inner{padding-top:100px}.jddj-hero-inner h1{font-size:32px}.jddj-hero-lead{font-size:15px}.jddj-hero-actions{gap:10px}.jddj-btn{min-width:120px;height:42px;padding:0 18px;font-size:14px}.jddj-inner-banner{height:190px}.jddj-inner-banner-copy h1{font-size:25px}.jddj-inner-banner-copy .sort-description{font-size:14px;line-height:1.6}}