:root{--sv-red:#d9282f;--sv-red-dark:#aa161d;--sv-ink:#172534;--sv-blue:#183b57;--sv-muted:#687582;--sv-line:#e5eaee;--sv-soft:#f5f7f9;--sv-shadow:0 18px 46px rgba(18,37,55,.09)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body.service-preview-page{margin:0;color:var(--sv-ink);background:#fff;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.7}
.sv-container{width:min(1180px,calc(100% - 48px));margin:0 auto}
.sv-hero{position:relative;overflow:hidden;padding:72px 0 66px;color:#fff;background:linear-gradient(118deg,#142e45,#214b68 64%,#17364e)}
.sv-hero:before{content:"";position:absolute;right:-90px;top:-250px;width:500px;height:500px;border:1px solid rgba(255,255,255,.13);border-radius:50%;box-shadow:0 0 0 76px rgba(255,255,255,.035),0 0 0 152px rgba(255,255,255,.022)}
.sv-hero:after{content:"";position:absolute;bottom:0;left:0;width:22%;height:4px;background:var(--sv-red)}
.sv-breadcrumb{margin-bottom:18px;color:rgba(255,255,255,.68);font-size:13px}.sv-breadcrumb a{color:inherit;text-decoration:none}
.sv-eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:9px;color:#ffb7ba;font-size:12px;font-weight:800;letter-spacing:.17em;text-transform:uppercase}.sv-eyebrow:before{content:"";width:30px;height:2px;background:var(--sv-red)}
.sv-hero h1{margin:0 0 16px;font-size:42px;line-height:1.25;letter-spacing:.03em}.sv-hero p{width:min(720px,100%);margin:0;color:rgba(255,255,255,.82);font-size:16px}
.sv-tabs-wrap{position:sticky;top:0;z-index:14;border-bottom:1px solid var(--sv-line);background:rgba(255,255,255,.96);backdrop-filter:blur(14px)}
.sv-tabs{display:flex;gap:8px;padding:12px 0;overflow:auto;scrollbar-width:none}.sv-tabs::-webkit-scrollbar{display:none}.sv-tabs a{flex:0 0 auto;padding:9px 20px;border-radius:999px;color:#586675;text-decoration:none;font-size:14px;font-weight:800;transition:.22s ease}.sv-tabs a:hover{color:var(--sv-red);background:#fff0f1}.sv-tabs a[aria-current="page"]{color:#fff;background:var(--sv-red);box-shadow:0 8px 20px rgba(217,40,47,.2)}
.sv-main{padding:68px 0 82px;background:linear-gradient(#fff,#fff 45%,#f6f8f9)}
.sv-section{margin-bottom:64px}.sv-section:last-child{margin-bottom:0}
.sv-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:29px}.sv-kicker{margin-bottom:4px;color:var(--sv-red);font-size:12px;font-weight:900;letter-spacing:.16em;text-transform:uppercase}.sv-section-head h2{margin:0;font-size:31px;line-height:1.35}.sv-section-head>p{max-width:520px;margin:0;color:var(--sv-muted);text-align:right;font-size:14px}
.sv-service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.sv-service-card{position:relative;padding:31px 28px;background:#fff;border:1px solid var(--sv-line);border-radius:16px;box-shadow:0 10px 32px rgba(18,37,55,.045);transition:.25s ease}.sv-service-card:hover{transform:translateY(-5px);border-color:rgba(217,40,47,.25);box-shadow:var(--sv-shadow)}.sv-service-no{display:grid;place-items:center;width:46px;height:46px;margin-bottom:20px;border-radius:11px;background:#fff0f1;color:var(--sv-red);font-weight:900}.sv-service-card h3{margin:0 0 10px;font-size:21px}.sv-service-card p{margin:0 0 16px;color:var(--sv-muted);font-size:14px}.sv-list{margin:0;padding:0;list-style:none}.sv-list li{position:relative;margin:9px 0;padding-left:18px;color:#465665;font-size:14px}.sv-list li:before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--sv-red)}
.sv-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;padding:30px;background:#fff;border:1px solid var(--sv-line);border-radius:17px}.sv-step{position:relative;padding:8px 25px}.sv-step:not(:last-child):after{content:"→";position:absolute;right:-7px;top:20px;color:#c0c8cf;font-size:22px}.sv-step span{display:block;margin-bottom:8px;color:var(--sv-red);font-size:12px;font-weight:900;letter-spacing:.1em}.sv-step h3{margin:0 0 7px;font-size:17px}.sv-step p{margin:0;color:var(--sv-muted);font-size:13px}
.sv-panel{display:grid;grid-template-columns:1fr 1fr;gap:24px}.sv-panel-item{padding:29px 30px;background:#fff;border:1px solid var(--sv-line);border-radius:15px}.sv-panel-item h3{margin:0 0 12px;font-size:20px}.sv-panel-item p{margin:0;color:var(--sv-muted);font-size:14px}
.sv-statbar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:24px;background:var(--sv-blue);border-radius:15px;overflow:hidden;color:#fff}.sv-stat{padding:24px;text-align:center;border-right:1px solid rgba(255,255,255,.13)}.sv-stat:last-child{border-right:0}.sv-stat strong{display:block;color:#fff;font-size:23px}.sv-stat span{color:rgba(255,255,255,.68);font-size:12px}
.sv-form-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:28px;align-items:start}.sv-form{padding:31px;background:#fff;border:1px solid var(--sv-line);border-radius:17px;box-shadow:0 14px 38px rgba(18,37,55,.055)}.sv-form h2{margin:0 0 5px;font-size:25px}.sv-form-intro{margin:0 0 24px;color:var(--sv-muted);font-size:13px}.sv-fields{display:grid;grid-template-columns:1fr 1fr;gap:17px}.sv-field--full{grid-column:1/-1}.sv-field label{display:block;margin-bottom:6px;color:#3d4d5d;font-size:13px;font-weight:800}.sv-field input,.sv-field select,.sv-field textarea{width:100%;border:1px solid #dce2e7;border-radius:8px;background:#fafbfc;color:var(--sv-ink);font:inherit;font-size:14px;outline:none;transition:.2s ease}.sv-field input,.sv-field select{height:45px;padding:0 13px}.sv-field textarea{min-height:105px;padding:11px 13px;resize:vertical}.sv-field input:focus,.sv-field select:focus,.sv-field textarea:focus{border-color:var(--sv-red);background:#fff;box-shadow:0 0 0 3px rgba(217,40,47,.08)}.sv-submit{width:100%;height:48px;margin-top:19px;border:0;border-radius:8px;background:var(--sv-red);color:#fff;font:inherit;font-size:14px;font-weight:900;cursor:pointer;transition:.2s ease}.sv-submit:hover{background:var(--sv-red-dark);transform:translateY(-1px)}.sv-form-note{margin:10px 0 0;color:#8a949e;font-size:11px}.sv-form-status{display:none;margin-top:12px;padding:10px 12px;border-radius:7px;background:#edf8f1;color:#2f7448;font-size:13px}
.sv-aside{position:sticky;top:78px}.sv-aside-card{margin-bottom:18px;padding:27px;background:#182f45;color:#fff;border-radius:15px}.sv-aside-card h3{margin:0 0 10px;font-size:21px}.sv-aside-card p{margin:0 0 18px;color:rgba(255,255,255,.72);font-size:13px}.sv-contact-row{padding:12px 0;border-top:1px solid rgba(255,255,255,.13)}.sv-contact-row small{display:block;color:rgba(255,255,255,.53);font-size:11px}.sv-contact-row a{color:#fff;text-decoration:none;font-size:16px;font-weight:800}.sv-aside-light{padding:25px;background:#fff;border:1px solid var(--sv-line);border-radius:15px}.sv-aside-light h3{margin:0 0 11px;font-size:18px}.sv-aside-light p{margin:0;color:var(--sv-muted);font-size:13px}
.sv-support-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.sv-support-item{display:grid;grid-template-columns:50px 1fr;gap:16px;padding:24px;background:#fff;border:1px solid var(--sv-line);border-radius:14px}.sv-support-icon{display:grid;place-items:center;width:50px;height:50px;border-radius:12px;background:#fff0f1;color:var(--sv-red);font-size:16px;font-weight:900}.sv-support-item h3{margin:1px 0 6px;font-size:18px}.sv-support-item p{margin:0;color:var(--sv-muted);font-size:13px}
.sv-faq{display:grid;gap:11px}.sv-faq details{padding:18px 21px;background:#fff;border:1px solid var(--sv-line);border-radius:11px}.sv-faq summary{cursor:pointer;font-weight:800}.sv-faq p{margin:12px 0 0;color:var(--sv-muted);font-size:14px}
.sv-cta{position:relative;overflow:hidden;padding:48px 0;background:#182f45;color:#fff}.sv-cta:after{content:"SERVICE";position:absolute;right:4%;top:-42px;color:rgba(255,255,255,.035);font-size:130px;font-weight:900}.sv-cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:35px}.sv-cta h2{margin:0 0 6px;font-size:27px}.sv-cta p{margin:0;color:rgba(255,255,255,.72);font-size:14px}.sv-actions{display:flex;gap:12px;flex:0 0 auto}.sv-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:8px;background:var(--sv-red);color:#fff;text-decoration:none;font-size:14px;font-weight:900}.sv-btn--ghost{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22)}
.sv-footer{padding:31px 0;background:#11202e;color:rgba(255,255,255,.65);font-size:13px}.sv-footer-inner{display:flex;justify-content:space-between;gap:25px}.sv-footer a{color:inherit;text-decoration:none}.sv-footer-nav{display:flex;gap:20px;flex-wrap:wrap}
@media(max-width:1050px){.sv-service-grid{grid-template-columns:1fr}.sv-flow{grid-template-columns:repeat(2,1fr);gap:20px}.sv-step:nth-child(2):after{display:none}.sv-form-layout{grid-template-columns:1fr}.sv-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}.sv-aside-card{margin:0}}
@media(max-width:760px){.sv-container{width:min(100% - 30px,1180px)}.sv-hero{padding:49px 0}.sv-hero h1{font-size:31px}.sv-hero p{font-size:14px}.sv-tabs a{padding:8px 15px}.sv-main{padding:50px 0 62px}.sv-section{margin-bottom:48px}.sv-section-head{display:block}.sv-section-head h2{font-size:26px}.sv-section-head>p{margin-top:8px;text-align:left}.sv-flow,.sv-panel,.sv-support-list{grid-template-columns:1fr}.sv-step:not(:last-child):after{display:none}.sv-statbar{grid-template-columns:1fr 1fr}.sv-stat:nth-child(2){border-right:0}.sv-stat:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.13)}.sv-fields{grid-template-columns:1fr}.sv-field--full{grid-column:auto}.sv-aside{grid-template-columns:1fr}.sv-cta-inner,.sv-footer-inner{display:block}.sv-actions{margin-top:21px}.sv-footer-nav{margin-top:15px}}
@media(max-width:420px){.sv-actions{display:grid}.sv-form{padding:22px}.sv-service-card{padding:25px 22px}}


.sv-seven-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:28px 0 0;padding:0;list-style:none}.sv-seven-flow li{position:relative;min-height:190px;padding:24px 20px;border:1px solid #dce6f1;border-radius:15px;background:#fff;box-shadow:0 10px 30px rgba(11,48,88,.06)}.sv-seven-flow b{color:#d62f3a;font-size:13px;letter-spacing:.1em}.sv-seven-flow h3{margin:12px 0 9px;color:#0b2345;font-size:18px}.sv-seven-flow p{margin:0;color:#66758a;font-size:13px;line-height:1.75}@media(max-width:980px){.sv-seven-flow{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:560px){.sv-seven-flow{grid-template-columns:1fr}.sv-seven-flow li{min-height:0}}