/* roulang page: index */
:root{
  --blue:#2563A6;
  --blue-deep:#1E6FA8;
  --peach:#F08A6B;
  --peach-soft:#FFB49A;
  --peach-bg:#FFF3EE;
  --bg:#FBFCFD;
  --bg-alt:#F4F8FB;
  --ink:#16232E;
  --muted:#5B6B7A;
  --line:#DCE7F0;
  --white:#FFFFFF;
  --radius:18px;
  --radius-sm:14px;
  --shadow:0 12px 32px rgba(15,39,64,.08);
  --shadow-hover:0 18px 40px rgba(15,39,64,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
ul{list-style:none}
:focus-visible{outline:2px solid var(--peach);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
h1{font-size:48px;line-height:1.16;font-weight:700;letter-spacing:.01em}
h2{font-size:34px;line-height:1.25;font-weight:700;letter-spacing:.01em}
h3{font-size:21px;line-height:1.4;font-weight:600}
p{color:var(--muted)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.sec-head p{max-width:640px;margin-top:12px;font-size:15px}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--blue);letter-spacing:.06em}
.kicker::before{content:"";width:26px;height:3px;border-radius:2px;background:var(--peach)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 24px;border-radius:12px;font-size:15px;font-weight:600;transition:background .2s,color .2s,transform .2s,border-color .2s}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-deep);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--blue);border:1px solid var(--blue)}
.btn-ghost:hover{background:var(--peach-bg);border-color:var(--peach);color:#C25A3F}
.link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--blue)}
.link:hover{color:#C25A3F;text-decoration:underline}

/* 头部 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(251,252,253,.97);border-bottom:1px solid transparent;transition:background .25s,box-shadow .25s,border-color .25s}
.site-header.scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 6px 22px rgba(15,39,64,.06)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:.01em}
.logo-mark{position:relative;width:30px;height:30px;border-radius:10px;background:var(--peach);flex:none}
.logo-mark::after{content:"";position:absolute;left:11px;top:9px;border-left:9px solid #fff;border-top:6px solid transparent;border-bottom:6px solid transparent}
.nav{display:flex;align-items:center;gap:2px;padding:4px;background:#fff;border:1px solid var(--line);border-radius:999px}
.nav a{padding:8px 15px;border-radius:999px;font-size:14px;color:var(--muted);transition:.2s}
.nav a:hover{color:var(--blue);background:var(--bg-alt)}
.nav a.active{color:var(--blue);background:var(--bg-alt);box-shadow:inset 0 -2px 0 var(--peach)}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--blue);transition:.2s}
.icon-btn:hover{border-color:var(--peach);background:var(--peach-bg)}
.menu-btn{display:none}
.drawer{position:fixed;inset:0;z-index:90;display:none}
.drawer.open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(22,35,46,.48)}
.drawer-panel{position:absolute;top:0;right:0;width:min(340px,88vw);height:100%;background:#fff;padding:22px;display:flex;flex-direction:column;gap:20px;overflow:auto;box-shadow:-12px 0 40px rgba(15,39,64,.16)}
.drawer-top{display:flex;align-items:center;justify-content:space-between}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:12px 14px;border-radius:12px;font-size:15px;color:var(--ink);border:1px solid transparent}
.drawer-nav a:hover{border-color:var(--line);background:var(--bg-alt);color:var(--blue)}
.drawer-search{display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:12px;color:var(--muted);font-size:14px}
.drawer-meta{font-size:13px;color:var(--muted);line-height:1.9}

/* Hero */
.hero{position:relative;padding:80px 0 76px;background:var(--bg);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(to right,rgba(37,99,166,.055) 1px,transparent 1px),linear-gradient(to bottom,rgba(37,99,166,.055) 1px,transparent 1px);background-size:56px 56px}
.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero-copy h1{margin:18px 0 0}
.hero-sub{margin-top:16px;font-size:17px;font-weight:600;color:var(--blue)}
.hero-copy .lead{margin-top:14px;font-size:15px;line-height:1.85;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag-row li{padding:6px 14px;font-size:13px;color:var(--blue);background:#fff;border:1px solid var(--line);border-radius:999px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;border:8px solid #fff;box-shadow:var(--shadow)}
.chips{position:absolute;top:16px;left:16px;display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:6px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--ink);box-shadow:0 6px 16px rgba(15,39,64,.08)}
.tick-line{display:flex;align-items:center;gap:4px;margin-top:16px}
.tick-line span{display:block;width:26px;height:4px;border-radius:2px;background:var(--line)}
.tick-line span:nth-child(-n+4){background:var(--peach)}

/* 内容服务矩阵 */
.matrix{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.card-body{padding:24px}
.card-body h3{margin:10px 0 8px}
.card-body p{font-size:14.5px;line-height:1.75}
.card-body .link{margin-top:16px}
.card-lg{grid-row:span 2;display:flex;flex-direction:column;overflow:hidden}
.card-lg img{width:100%;aspect-ratio:16/10;object-fit:cover}
.card-wide{grid-column:span 2}
.tag{display:inline-block;padding:4px 10px;border-radius:8px;font-size:12.5px;font-weight:600;color:var(--blue);background:var(--bg-alt);border:1px solid var(--line)}
.icon-line{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--peach-bg);color:var(--peach)}
.icon-line svg{width:20px;height:20px}

/* 数据 */
.data-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:0}
.stat{padding:26px 8px 26px 0;border-top:1px solid var(--line)}
.stat:nth-child(odd){margin-right:24px}
.stat-num{font-size:44px;font-weight:700;line-height:1.1;color:var(--blue)}
.stat-num small{font-size:16px;font-weight:600;color:var(--muted);margin-left:4px}
.stat p{font-size:14px;margin-top:6px}
.scale-line{display:flex;gap:5px;margin-top:22px}
.scale-line i{display:block;width:18px;height:3px;background:var(--line);border-radius:2px}
.scale-line i.on{background:var(--peach-soft)}

/* 专题 */
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.topic-card{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:.25s}
.topic-card:hover{border-color:var(--peach);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.topic-thumb{overflow:hidden}
.topic-thumb img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .35s}
.topic-card:hover .topic-thumb img{transform:scale(1.05)}
.topic-card .card-body{flex:1;display:flex;flex-direction:column}
.topic-card .card-body p{font-size:13.5px}
.topic-more{display:flex;justify-content:flex-end;margin-top:28px}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding-top:22px;border-top:1px solid var(--line)}
.step::before{content:"";position:absolute;top:-1px;left:0;width:34px;height:3px;background:var(--peach);border-radius:2px}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:var(--blue);color:#fff;font-size:14px;font-weight:700}
.step:first-child .step-num{background:#fff;color:var(--blue);border:2px solid var(--peach)}
.step h3{font-size:18px;margin:14px 0 8px}
.step p{font-size:14px}
.steps-foot{margin-top:26px}

/* 案例墙 */
.wall{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.case{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:.25s}
.case:nth-child(1),.case:nth-child(2){grid-column:span 2}
.case:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.case img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .35s}
.case:hover img{transform:scale(1.04)}
.case .card-body p{font-size:13.5px}

/* 片单 */
.picks-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.filter{padding:8px 16px;min-height:40px;border-radius:999px;font-size:13.5px;font-weight:600;color:var(--blue);background:var(--bg-alt);border:1px solid transparent;transition:.2s}
.filter:hover{border-color:var(--line)}
.filter.on{color:#C25A3F;background:var(--peach-bg);border-color:var(--peach)}
.picks{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.pick{grid-column:span 2;display:flex;gap:16px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:.25s}
.pick:nth-child(4),.pick:nth-child(5){grid-column:span 3}
.pick:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.pick img{width:132px;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);flex:none}
.pick-info h3{font-size:17px;margin:8px 0 6px}
.pick-info p{font-size:13.5px;line-height:1.7}
.pick-meta{display:flex;gap:8px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:32px}
.news-main{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:.25s}
.news-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.news-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-side{display:flex;flex-direction:column}
.news-item{display:block;padding:20px 4px;border-bottom:1px solid var(--line);transition:background .2s}
.news-item:first-child{padding-top:4px}
.news-item:hover{background:#F7FBFE}
.news-item time{font-size:12.5px;font-weight:600;color:var(--blue);letter-spacing:.02em}
.news-item h3{font-size:17px;margin:6px 0 6px}
.news-item p{font-size:13.5px;line-height:1.7}
.news-foot{margin-top:22px}

/* 多端 */
.devices{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.device{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.25s}
.device:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.device h3{margin:16px 0 8px;font-size:19px}
.device p{font-size:14px}

/* 合作 */
.partners{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.partner{display:flex;align-items:center;justify-content:center;height:74px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-alt);color:#93A3B1;font-size:14px;font-weight:600;filter:grayscale(1);transition:.25s}
.partner:hover{filter:grayscale(0);color:var(--blue);border-color:var(--peach-soft);background:#fff}
.coop-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.coop-item{border-top:2px solid var(--peach-soft);padding-top:16px}
.coop-item h3{font-size:17px;margin-bottom:8px}
.coop-item p{font-size:14px}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 20px;transition:.2s}
.faq-item[open]{background:var(--bg-alt)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:16px;font-weight:600;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;line-height:1;color:var(--peach);transition:transform .25s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 0 18px;font-size:15px;line-height:1.8;color:var(--muted)}

/* 保障条 */
.band{background:linear-gradient(rgba(22,35,46,.93),rgba(22,35,46,.93)),url(/assets/images/15415536f9f460b3.jpg) center/cover no-repeat;color:#fff;border-radius:16px;padding:38px 40px}
.band-inner{display:flex;flex-wrap:wrap;align-items:center;gap:32px}
.band-list{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;flex:1}
.band-item{display:flex;align-items:center;gap:10px;font-size:14.5px;font-weight:600}
.band-item i{width:10px;height:10px;border-radius:3px;background:var(--peach);flex:none}
.band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.band .btn-ghost:hover{background:var(--peach);border-color:var(--peach);color:#fff}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-info h2{margin-bottom:16px}
.contact-info p{font-size:15px}
.contact-meta{margin-top:24px;display:flex;flex-direction:column;gap:12px;font-size:14.5px}
.contact-meta span{color:var(--muted)}
.contact-meta strong{color:var(--ink);font-weight:600}
.form-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:28px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:15px;transition:border-color .2s,box-shadow .2s}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--peach);box-shadow:0 0 0 3px rgba(240,138,107,.22)}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7}
.check input{width:18px;height:18px;margin-top:2px;flex:none;accent-color:var(--peach)}
.form-actions{display:flex;justify-content:flex-end;margin-top:22px}

/* 页脚 */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;max-width:300px}
.footer-col h3{font-size:14px;font-weight:700;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--blue);text-decoration:underline}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:48px;padding:22px 0;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

@media(max-width:1024px){
  .nav,.header-actions .btn,.header-actions .icon-btn{display:none}
  .menu-btn{display:flex}
  h1{font-size:38px}
  h2{font-size:28px}
  .hero{padding:60px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy .lead{max-width:none}
  .matrix{grid-template-columns:1fr 1fr}
  .card-lg{grid-row:auto;grid-column:span 2}
  .card-wide{grid-column:span 2}
  .data-wrap{grid-template-columns:1fr;gap:32px}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px}
  .wall{grid-template-columns:repeat(2,1fr)}
  .case:nth-child(1),.case:nth-child(2){grid-column:span 2}
  .picks{grid-template-columns:repeat(2,1fr)}
  .pick,.pick:nth-child(4),.pick:nth-child(5){grid-column:auto}
  .news-grid{grid-template-columns:1fr}
  .devices{grid-template-columns:1fr}
  .partners{grid-template-columns:repeat(3,1fr)}
  .coop-list{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .band-inner{flex-direction:column;align-items:flex-start}
  .band-list{grid-template-columns:repeat(2,1fr);width:100%}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  h1{font-size:32px}
  h2{font-size:25px}
  h3{font-size:19px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px}
  .matrix{grid-template-columns:1fr}
  .card-lg,.card-wide{grid-column:auto}
  .topic-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .wall{grid-template-columns:1fr}
  .case:nth-child(1),.case:nth-child(2){grid-column:auto}
  .picks{grid-template-columns:1fr}
  .pick{flex-direction:column}
  .pick img{width:100%}
  .partners{grid-template-columns:repeat(2,1fr)}
  .band{padding:28px 22px}
  .band-list{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat:nth-child(odd){margin-right:16px}
  .stat-num{font-size:34px}
}
@media(max-width:520px){
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr}
  .stat:nth-child(odd){margin-right:0}
  .form-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .hero-media img{border-width:6px}
  .chips{position:static;margin-top:12px}
}