/* roulang page: index */
:root{
  --brand:#3E6F8E;
  --brand-dark:#2E5873;
  --brand-light:#E8F1F7;
  --teal:#2F9E9B;
  --teal-light:#E4F4F3;
  --amber:#C47A2C;
  --amber-dark:#A9631F;
  --amber-light:#FBF1E4;
  --bg:#F6F9FB;
  --surface:#FFFFFF;
  --border:#DCE7EF;
  --text:#17232E;
  --muted:#5C6B78;
  --success:#2F9E74;
  --danger:#C44949;
  --ink:#1D3143;
  --ink-2:#274257;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-card:0 10px 30px rgba(23,35,46,.08);
  --shadow-card-hover:0 14px 36px rgba(23,35,46,.12);
  --shadow-btn:0 6px 16px rgba(62,111,142,.22);
  --container:1200px;
  --gap:24px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,text-decoration-color .2s ease}
a:hover{color:var(--brand-dark);text-decoration:underline}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,textarea,select{font:inherit;color:inherit}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-sm{padding:56px 0}
.section-alt{background:#FFFFFF}
.section-tint{background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-light) 100%)}

.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-dark);background:var(--brand-light);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
.section-title{font-size:32px;margin-bottom:14px}
.section-desc{color:var(--muted);font-size:16px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;text-align:center;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .12s ease,border-color .2s ease;
}
.btn:hover{text-decoration:none}
.btn:focus-visible{outline:3px solid rgba(62,111,142,.25);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-btn)}
.btn-primary:hover{background:var(--brand-dark);color:#fff}
.btn-primary:active{transform:translateY(1px)}
.btn-amber{background:var(--amber);color:#fff;box-shadow:0 6px 16px rgba(196,122,44,.24)}
.btn-amber:hover{background:var(--amber-dark);color:#fff}
.btn-amber:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--brand-dark);border-color:var(--border)}
.btn-ghost:hover{background:var(--brand-light);border-color:#C6DBE8;color:var(--brand-dark)}
.btn-text{background:transparent;color:var(--brand);padding:10px 14px;box-shadow:none}
.btn-text:hover{background:var(--brand-light);color:var(--brand-dark)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-loading{opacity:.5;cursor:not-allowed}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  backdrop-filter:saturate(140%) blur(2px);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:74px;padding-top:8px;padding-bottom:8px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand-mark{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(140deg,var(--brand) 0%,var(--teal) 100%);
  color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(62,111,142,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap}
.nav-chip{
  display:inline-block;padding:9px 16px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--muted);
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.nav-chip:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none}
.nav-chip.is-active{background:#fff;color:var(--brand-dark);font-weight:600;box-shadow:0 2px 10px rgba(23,35,46,.08);border:1px solid var(--border)}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{
  display:none;border-top:1px solid var(--border);background:#fff;padding:14px 24px 22px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;padding:12px 14px;border-radius:10px;color:var(--ink);
  font-size:15px;font-weight:500;
}
.mobile-drawer a:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none}
.mobile-drawer a.is-active{background:var(--brand-light);color:var(--brand-dark);font-weight:600}
.mobile-drawer .btn{margin-top:12px}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  padding:96px 0 88px;
  background:linear-gradient(180deg,#FBFDFE 0%,var(--bg) 60%,#EFF6FA 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.07;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(47,158,155,.14),rgba(47,158,155,0) 68%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:44px;line-height:1.28;margin-bottom:20px;max-width:15em}
.hero h1 em{font-style:normal;color:var(--brand);position:relative}
.hero-sub{font-size:17px;color:var(--muted);max-width:34em;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:500;
  background:#fff;border:1px solid var(--border);color:var(--brand-dark);
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
.tag.amber{background:var(--amber-light);border-color:#EFD9BC;color:var(--amber-dark)}
.tag.amber::before{background:var(--amber)}

.hero-visual{position:relative}
.visual-card{
  background:#fff;border:1px solid var(--border);border-radius:20px;
  box-shadow:0 20px 50px rgba(23,35,46,.12);
  overflow:hidden;
}
.visual-img{width:100%;aspect-ratio:16/9;object-fit:cover}
.visual-panel{background:var(--ink);color:#DCE7EF;padding:22px 24px 24px}
.panel-title{font-size:13px;letter-spacing:.12em;color:#8FB6CC;margin-bottom:14px;text-transform:uppercase}
.panel-row{display:flex;align-items:center;justify-content:space-between;font-size:14px;padding:8px 0;border-bottom:1px dashed rgba(220,231,239,.16)}
.panel-row:last-of-type{border-bottom:none}
.panel-row span{color:#93A9B8}
.panel-row b{color:#fff;font-weight:600}
.panel-bar{height:8px;border-radius:999px;background:rgba(220,231,239,.16);margin:16px 0 10px;overflow:hidden}
.panel-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--teal) 0%,#6FC7C4 100%)}
.panel-note{font-size:13px;color:#8FB6CC}
.float-chip{
  position:absolute;background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:8px 16px;font-size:13px;font-weight:600;color:var(--brand-dark);
  box-shadow:0 10px 26px rgba(23,35,46,.12);
}
.float-chip-a{top:-16px;right:24px}
.float-chip-b{bottom:-16px;left:-18px;color:var(--amber-dark);border-color:#EFD9BC;background:var(--amber-light)}

/* 指标看板 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.metric-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease;
}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.metric-num{font-size:38px;font-weight:700;line-height:1.1;color:var(--brand-dark);letter-spacing:-.02em}
.metric-num small{font-size:17px;font-weight:600;margin-left:2px}
.metric-label{margin-top:10px;font-size:14px;color:var(--muted)}
.metric-trend{
  display:inline-flex;align-items:center;gap:5px;margin-top:14px;
  font-size:12px;font-weight:600;color:var(--success);background:#E9F6F0;border-radius:999px;padding:3px 10px;
}
.metric-trend.neutral{color:var(--brand-dark);background:var(--brand-light)}

/* Bento 服务矩阵 */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap);grid-auto-rows:minmax(158px,auto)}
.bento-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px;display:flex;flex-direction:column;gap:12px;position:relative;overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.bento-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:#C6DBE8}
.bento-item.span-6{grid-column:span 6}
.bento-item.span-3{grid-column:span 3}
.bento-item.span-4{grid-column:span 4}
.bento-item.row-2{grid-row:span 2}
.bento-item.is-feature{background:linear-gradient(160deg,#FFFFFF 0%,#F2F8FB 100%)}
.bento-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);flex-shrink:0;
}
.bento-icon.teal{background:var(--teal-light);color:#207B79}
.bento-icon.amber{background:var(--amber-light);color:var(--amber-dark)}
.bento-icon svg{width:22px;height:22px}
.bento-item h3{font-size:19px}
.bento-item p{font-size:14.5px;color:var(--muted)}
.bento-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.bento-link::after{content:"→";transition:transform .2s ease}
.bento-link:hover{text-decoration:none;color:var(--brand-dark)}
.bento-link:hover::after{transform:translateX(4px)}
.feature-media{
  border-radius:var(--radius-img);overflow:hidden;margin-top:4px;flex:1;min-height:150px;
}
.feature-media img{width:100%;height:100%;object-fit:cover}
.bento-list{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--muted)}
.bento-list li{display:flex;gap:8px;align-items:flex-start}
.bento-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex-shrink:0}

/* 最新信息 */
.news-layout{display:grid;grid-template-columns:1.35fr 1fr;gap:var(--gap);align-items:stretch}
.news-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.news-card:hover .news-title{color:var(--brand-dark)}
.news-thumb{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;
  background:var(--brand-light);color:var(--brand-dark);
  border-radius:999px;padding:3px 12px;font-size:12.5px;font-weight:600;
}
.chip.teal{background:var(--teal-light);color:#207B79}
.chip.amber{background:var(--amber-light);color:var(--amber-dark)}
.news-title{font-size:21px;line-height:1.45;transition:color .2s ease}
.news-excerpt{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-side{display:grid;grid-template-rows:1fr 1fr;gap:var(--gap)}
.news-side .news-card{flex-direction:row;align-items:stretch}
.news-side .news-thumb{width:38%;aspect-ratio:auto;height:100%;min-height:150px;flex-shrink:0}
.news-side .news-body{padding:20px}
.news-side .news-title{font-size:17px}
.news-side .news-excerpt{-webkit-line-clamp:2;font-size:14px}
.empty-state{
  background:#fff;border:1px dashed var(--border);border-radius:var(--radius-card);
  padding:52px 24px;text-align:center;color:var(--muted);
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:50%;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:22px;
}
.empty-state p{margin-bottom:16px}

/* 结果对比 */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}
.compare-panel{
  border-radius:var(--radius-card);padding:30px 28px;border:1px solid var(--border);background:#fff;box-shadow:var(--shadow-card);
}
.compare-panel.is-before{background:#F4F6F8;color:var(--muted)}
.compare-panel.is-after{background:linear-gradient(160deg,#FFFFFF 0%,var(--brand-light) 100%);border-color:#C6DBE8}
.compare-panel h3{font-size:20px;margin-bottom:6px}
.compare-panel .compare-note{font-size:14px;color:var(--muted);margin-bottom:20px}
.compare-list{display:flex;flex-direction:column;gap:12px;margin-bottom:24px}
.compare-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.mark{width:20px;height:20px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-top:3px}
.mark.no{background:#E7EBEF;color:#8A98A5}
.mark.yes{background:var(--success);color:#fff}
.compare-progress{margin-top:8px}
.compare-progress .label{display:flex;justify-content:space-between;font-size:13px;margin-bottom:8px}
.compare-progress .track{height:10px;border-radius:999px;background:#E7EBEF;overflow:hidden}
.compare-progress .track i{display:block;height:100%;border-radius:999px;transition:width .4s ease}
.is-before .track i{background:#B9C4CD}
.is-after .track i{background:linear-gradient(90deg,var(--brand) 0%,var(--teal) 100%)}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside p{color:var(--muted);font-size:15px;margin-top:14px;margin-bottom:24px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item[open]{border-left:4px solid var(--brand);background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-light) 130%);box-shadow:var(--shadow-card)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:20px 24px;
  font-size:16px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--brand);flex-shrink:0;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–";transform:rotate(0deg)}
.faq-item summary:hover{color:var(--brand-dark)}
.faq-body{padding:0 24px 22px;font-size:14.8px;color:var(--muted);line-height:1.85}
.faq-body ul{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.faq-body ul li{display:flex;gap:8px}
.faq-body ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex-shrink:0}

/* 转化表单 */
.contact-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:var(--gap);align-items:start}
.form-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-card);
}
.form-card h3{font-size:22px;margin-bottom:8px}
.form-card .form-lead{font-size:14.5px;color:var(--muted);margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field label .req{color:var(--danger);margin-left:2px}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-btn);
  background:#FBFDFE;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(62,111,142,.16);
}
.field textarea{resize:vertical;min-height:104px}
.checkbox{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin-bottom:22px}
.checkbox input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand);flex-shrink:0}
.form-status{font-size:14px;margin-top:14px;display:none;border-radius:10px;padding:12px 14px}
.form-status.is-success{display:block;background:#E9F6F0;color:#1F7A57;border:1px solid #C6E8D8}
.form-status.is-error{display:block;background:#FBECEC;color:#A33A3A;border:1px solid #EFCFCF}
.assure-card{
  background:var(--ink);color:#D7E3EC;border-radius:var(--radius-card);padding:32px;
  box-shadow:0 18px 40px rgba(29,49,67,.18);
}
.assure-card h3{color:#fff;font-size:20px;margin-bottom:10px}
.assure-card > p{font-size:14px;color:#93A9B8;margin-bottom:24px}
.step-list{display:flex;flex-direction:column;gap:18px;margin-bottom:26px}
.step-item{display:flex;gap:14px;align-items:flex-start}
.step-num{
  width:30px;height:30px;border-radius:9px;background:rgba(47,158,155,.18);color:#7FD3D0;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex-shrink:0;
}
.step-item strong{display:block;color:#fff;font-size:15px;font-weight:600;margin-bottom:2px}
.step-item span{font-size:13.5px;color:#93A9B8;line-height:1.7}
.assure-note{
  border-top:1px solid rgba(220,231,239,.16);padding-top:18px;font-size:13px;color:#8FB6CC;
  display:flex;align-items:center;gap:10px;
}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(47,158,155,.18);flex-shrink:0}

/* 页脚 */
.site-footer{background:var(--ink);color:#A9BCC9;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{color:#fff;font-size:16px;display:block;line-height:1.3}
.footer-brand small{font-size:12px;color:#7E93A3}
.site-footer p{font-size:13.8px;line-height:1.85;color:#93A9B8}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#A9BCC9;font-size:14px}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-contact li{font-size:14px;color:#A9BCC9;display:flex;gap:8px}
.footer-contact li span{color:#7E93A3;flex-shrink:0}
.footer-bottom{
  border-top:1px solid rgba(220,231,239,.14);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7E93A3;
}
.footer-bottom a{color:#93A9B8}
.footer-bottom a:hover{color:#fff;text-decoration:none}

/* 返回顶部 */
.to-top{
  position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:12px;
  background:#fff;border:1px solid var(--border);color:var(--brand-dark);
  box-shadow:0 10px 26px rgba(23,35,46,.14);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,transform .2s ease;z-index:50;
}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-2px)}

/* 响应式 */
@media (max-width:1199px){
  .container{max-width:960px}
  .hero h1{font-size:38px}
  .bento-item.span-3{grid-column:span 6}
  .bento-item.span-4{grid-column:span 5}
  .news-layout{grid-template-columns:1fr 1fr}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .container{padding:0 22px}
  .main-nav{display:none}
  .header-cta .btn{display:none}
  .menu-toggle{display:flex}
  .hero{padding:64px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:34px;max-width:none}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .bento{grid-auto-rows:auto}
  .bento-item.span-6,.bento-item.span-3,.bento-item.span-4{grid-column:span 12}
  .bento-item.row-2{grid-row:auto}
  .news-layout{grid-template-columns:1fr}
  .news-side .news-card{flex-direction:column}
  .news-side .news-thumb{width:100%;min-height:0;aspect-ratio:16/9}
  .compare{grid-template-columns:1fr}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.75}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-title{font-size:24px}
  .hero{padding:48px 0 44px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .metrics{grid-template-columns:1fr 1fr;gap:16px}
  .metric-card{padding:20px 18px}
  .metric-num{font-size:30px}
  .form-row{grid-template-columns:1fr}
  .form-card,.assure-card{padding:24px 20px}
  .bento-item{padding:22px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px}
  .compare-panel{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .float-chip-a{right:8px}
  .float-chip-b{left:0}
}
@media (max-width:480px){
  .hero h1{font-size:26px}
  .metric-num{font-size:26px}
  .brand-text small{display:none}
  .header-inner{min-height:66px}
}

/* roulang page: category1 */
:root{
  --brand:#3E6F8E;
  --brand-dark:#2E5873;
  --brand-light:#E8F1F7;
  --accent-cyan:#2F9E9B;
  --accent-amber:#C47A2C;
  --success:#2F9E74;
  --danger:#C44949;
  --bg:#F6F9FB;
  --surface:#FFFFFF;
  --border:#DCE7EF;
  --ink:#17232E;
  --ink-soft:#5C6B78;
  --hud:#1B2C3A;
  --hud-soft:#93A9B8;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-card:0 10px 30px rgba(23,35,46,.08);
  --shadow-card-hover:0 14px 36px rgba(23,35,46,.12);
  --shadow-btn:0 6px 16px rgba(62,111,142,.22);
  --gap:24px;
  --section:80px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover{color:var(--brand-dark);text-decoration:underline;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(62,111,142,.25);border-radius:8px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;font-weight:600;font-size:15px;
  text-decoration:none;transition:all .18s ease;white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-accent{background:var(--accent-amber);color:#fff;box-shadow:0 6px 16px rgba(196,122,44,.24);}
.btn-accent:hover{background:#ad6a24;color:#fff;transform:translateY(-1px);}
.btn-accent:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--border);}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand);}
.btn-text{background:transparent;color:var(--brand);padding:8px 12px;}
.btn-text:hover{background:var(--brand-light);text-decoration:none;}
.btn[disabled],.btn.is-loading{opacity:.5;cursor:not-allowed;transform:none;}
.btn-block{width:100%;}

/* ============ 徽章 / chip ============ */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--brand-light);color:var(--brand-dark);border:1px solid transparent;
}
.chip-cyan{background:rgba(47,158,155,.12);color:#1F7B78;}
.chip-amber{background:rgba(196,122,44,.13);color:#9C5C18;}
.chip-line{background:#fff;border-color:var(--border);color:var(--ink-soft);font-weight:500;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  backdrop-filter:saturate(120%) blur(0);
}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:74px;padding-top:10px;padding-bottom:10px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,var(--brand),var(--accent-cyan));
  color:#fff;font-weight:700;font-size:17px;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;color:var(--ink);font-weight:700;}
.brand-text small{font-size:11px;color:var(--ink-soft);letter-spacing:.3px;}
.main-nav{
  display:flex;align-items:center;gap:6px;
  background:#F1F6FA;border:1px solid var(--border);
  padding:6px;border-radius:999px;margin-left:auto;
}
.nav-chip{
  padding:8px 16px;border-radius:999px;font-size:14px;font-weight:600;
  color:var(--ink-soft);white-space:nowrap;transition:all .18s ease;
}
.nav-chip:hover{background:#fff;color:var(--brand);text-decoration:none;}
.nav-chip.is-active{background:#fff;color:var(--brand-dark);box-shadow:0 2px 8px rgba(23,35,46,.10);}
.header-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#B6C6D2;}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:
    radial-gradient(1200px 420px at 88% -10%,rgba(47,158,155,.10),transparent 62%),
    radial-gradient(900px 380px at 4% 6%,rgba(62,111,142,.10),transparent 60%),
    var(--surface);
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;
  border-radius:50%;border:1px solid rgba(62,111,142,.10);
  box-shadow:0 0 0 60px rgba(62,111,142,.035),0 0 0 130px rgba(47,158,155,.03);
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;
  padding:72px 0 76px;
}
.hero-copy .breadcrumb{margin-bottom:18px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.hero h1{font-size:44px;line-height:1.24;margin-bottom:18px;letter-spacing:.3px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{font-size:17px;color:var(--ink-soft);max-width:620px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;height:340px;object-fit:cover;
  box-shadow:var(--shadow-card);
  border:1px solid var(--border);
}
.hero-panel{
  position:absolute;left:-22px;bottom:-24px;
  background:var(--hud);color:#fff;
  border-radius:var(--radius-card);padding:16px 18px;
  box-shadow:0 18px 40px rgba(23,35,46,.24);
  min-width:222px;
}
.hero-panel .hp-label{font-size:12px;color:var(--hud-soft);letter-spacing:.4px;}
.hero-panel .hp-value{font-size:26px;font-weight:700;line-height:1.3;}
.hero-panel .hp-value span{color:#7FD5D2;font-size:16px;font-weight:600;}
.hero-panel .hp-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.16);margin-top:10px;overflow:hidden;}
.hero-panel .hp-bar i{display:block;height:100%;width:92%;background:linear-gradient(90deg,var(--accent-cyan),#7FD5D2);border-radius:999px;}

/* ============ 通用板块 ============ */
.section{padding:var(--section) 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.6px;
  color:var(--accent-cyan);text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:32px;margin-bottom:14px;}
.section-head p{color:var(--ink-soft);font-size:16px;}

/* ============ 指标 HUD ============ */
.metrics{background:var(--hud);color:#fff;padding:64px 0 68px;}
.metrics .section-eyebrow{color:#7FD5D2;}
.metrics h2{font-size:28px;color:#fff;margin-bottom:10px;}
.metrics .metrics-sub{color:var(--hud-soft);font-size:15px;max-width:680px;margin-bottom:36px;}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.metric-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius-card);
  padding:22px 20px;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease;
}
.metric-card:hover{transform:translateY(-3px);background:rgba(255,255,255,.08);border-color:rgba(127,213,210,.35);}
.metric-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px;}
.metric-icon{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,158,155,.18);color:#7FD5D2;font-size:16px;font-weight:700;
}
.metric-trend{font-size:12px;font-weight:600;padding:3px 9px;border-radius:999px;background:rgba(47,158,116,.18);color:#8EE0BB;}
.metric-value{font-size:38px;font-weight:700;line-height:1.15;letter-spacing:-.5px;}
.metric-value small{font-size:16px;font-weight:600;color:var(--hud-soft);margin-left:3px;}
.metric-label{font-size:14px;color:var(--hud-soft);margin-top:8px;}

/* ============ 登录方式卡片 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:#C9DCE9;}
.card-media{position:relative;background:var(--brand-light);}
.card-media img{width:100%;height:190px;object-fit:cover;border-radius:0;}
.card-media .media-chip{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--brand-dark);}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;}
.card-body p{font-size:14.5px;color:var(--ink-soft);}
.card-foot{
  margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;gap:10px;
  border-top:1px dashed var(--border);font-size:13px;color:var(--ink-soft);
}
.card-link{font-weight:600;font-size:14px;}

/* ============ 常用入口 chip 区 ============ */
.entry-strip{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.entry-strip .container{padding-top:34px;padding-bottom:34px;}
.entry-strip-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-bottom:20px;}
.entry-strip-head h2{font-size:22px;}
.entry-strip-head p{font-size:14px;color:var(--ink-soft);}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip-link{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;
  background:#F1F6FA;border:1px solid var(--border);color:var(--ink-soft);
  font-size:14px;font-weight:600;transition:all .18s ease;white-space:nowrap;
}
.chip-link:hover{background:var(--brand-light);border-color:#BED6E7;color:var(--brand-dark);text-decoration:none;}
.chip-link.is-on{background:var(--brand);border-color:var(--brand);color:#fff;}
.chip-link.is-on:hover{background:var(--brand-dark);color:#fff;}

/* ============ 控件说明 ============ */
.controls{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.controls-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:center;}
.controls-visual img{width:100%;height:400px;object-fit:cover;box-shadow:var(--shadow-card);border:1px solid var(--border);}
.control-list{display:flex;flex-direction:column;gap:16px;margin-top:8px;}
.control-item{
  display:flex;gap:16px;padding:18px 20px;background:var(--bg);
  border:1px solid var(--border);border-radius:var(--radius-card);
  transition:border-color .2s ease,background-color .2s ease;
}
.control-item:hover{border-color:#BFD8E8;background:#F2F8FC;}
.control-no{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-size:14px;font-weight:700;
}
.control-item h3{font-size:17px;margin-bottom:6px;}
.control-item p{font-size:14.5px;color:var(--ink-soft);}

/* ============ 三端体验 ============ */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.device-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.device-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);}
.device-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.device-head .dot{width:10px;height:10px;border-radius:50%;background:var(--accent-cyan);}
.device-head h3{font-size:19px;}
.device-card ul{display:flex;flex-direction:column;gap:10px;}
.device-card li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-soft);}
.device-card li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;
  background:var(--brand);opacity:.85;
}
.device-note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--border);
  font-size:13px;color:var(--ink-soft);
}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start;}
.faq-aside .section-head{margin-bottom:22px;}
.faq-aside-card{
  background:var(--hud);color:#fff;border-radius:var(--radius-card);padding:24px;
}
.faq-aside-card h3{font-size:18px;color:#fff;margin-bottom:10px;}
.faq-aside-card p{font-size:14px;color:var(--hud-soft);margin-bottom:18px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{
  border-left:4px solid var(--brand);
  background:linear-gradient(180deg,var(--brand-light),#fff 70%);
  box-shadow:var(--shadow-card);
}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-weight:600;font-size:16px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);font-weight:700;font-size:16px;line-height:1;
}
.faq-item[open] summary::after{content:"−";background:var(--brand);color:#fff;}
.faq-item .faq-answer{padding:0 22px 20px;font-size:15px;color:var(--ink-soft);}
.faq-answer b{color:var(--ink);}

/* ============ CTA 表单 ============ */
.cta{
  background:
    radial-gradient(760px 320px at 12% 0%,rgba(47,158,155,.12),transparent 60%),
    linear-gradient(180deg,#EFF6FA,#F6F9FB);
  border-top:1px solid var(--border);
  padding:var(--section) 0;
}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start;}
.cta-intro h2{font-size:32px;margin-bottom:14px;}
.cta-intro p{color:var(--ink-soft);margin-bottom:24px;max-width:520px;}
.cta-assure{display:flex;flex-direction:column;gap:14px;}
.assure-item{
  display:flex;gap:14px;align-items:flex-start;
  background:rgba(255,255,255,.75);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:16px 18px;
}
.assure-item .ai{
  flex:0 0 auto;width:32px;height:32px;border-radius:10px;
  background:var(--accent-cyan);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
}
.assure-item h4{font-size:15px;margin-bottom:4px;}
.assure-item p{font-size:13.5px;color:var(--ink-soft);}
.form-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:28px;
}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-tip{font-size:13.5px;color:var(--ink-soft);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:var(--ink);}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#FBFDFE;color:var(--ink);
  font-size:15px;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field textarea{min-height:96px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(62,111,142,.18);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-soft);margin:6px 0 18px;}
.check-row input{margin-top:5px;width:16px;height:16px;accent-color:var(--brand);}
.form-msg{margin-top:14px;font-size:13.5px;border-radius:10px;padding:10px 14px;display:none;}
.form-msg.is-ok{display:block;background:rgba(47,158,116,.12);color:#1F7355;border:1px solid rgba(47,158,116,.28);}
.form-msg.is-err{display:block;background:rgba(196,73,73,.10);color:#9E3535;border:1px solid rgba(196,73,73,.28);}

/* ============ 页脚 ============ */
.site-footer{background:var(--hud);color:#C9D8E3;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(150deg,var(--accent-cyan),var(--brand));}
.footer-brand strong{display:block;color:#fff;font-size:16px;}
.footer-brand small{display:block;color:var(--hud-soft);font-size:11.5px;letter-spacing:.3px;}
.site-footer p{font-size:14px;color:var(--hud-soft);line-height:1.85;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#C9D8E3;font-size:14px;}
.footer-col a:hover{color:#7FD5D2;text-decoration:none;}
.footer-contact li{font-size:14px;color:var(--hud-soft);display:flex;gap:8px;flex-wrap:wrap;}
.footer-contact span{color:#8FAFBE;flex:0 0 62px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--hud-soft);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .hero-inner{gap:40px;}
}
@media (max-width:991px){
  .container{max-width:960px;}
  .main-nav{display:none;}
  .main-nav.is-open{
    display:flex;flex-direction:column;align-items:stretch;gap:8px;
    position:absolute;left:24px;right:24px;top:calc(100% + 8px);
    background:#fff;border:1px solid var(--border);border-radius:18px;
    padding:14px;box-shadow:0 18px 40px rgba(23,35,46,.14);
    margin-left:0;z-index:70;
  }
  .main-nav.is-open .nav-chip{text-align:center;padding:12px;}
  .nav-toggle{display:flex;margin-left:auto;}
  .header-cta{display:none;}
  .header-inner{position:relative;}
  .hero-inner{grid-template-columns:1fr;padding:56px 0 64px;}
  .hero-visual img{height:300px;}
  .hero-panel{left:16px;bottom:-20px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .controls-grid{grid-template-columns:1fr;gap:36px;}
  .controls-visual img{height:320px;}
  .device-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:36px;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .hero-inner{padding:44px 0 52px;}
  .hero h1{font-size:30px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .hero-visual img{height:230px;}
  .hero-panel{position:static;margin-top:14px;min-width:0;}
  .section-head h2{font-size:24px;}
  .metrics{padding:48px 0 52px;}
  .metric-grid{grid-template-columns:1fr;}
  .metric-value{font-size:34px;}
  .grid-3,.grid-4{grid-template-columns:1fr;}
  .controls-visual img{height:230px;}
  .chip-row{overflow-x:auto;flex-wrap:nowrap;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
  .chip-row::-webkit-scrollbar{height:4px;}
  .chip-row::-webkit-scrollbar-thumb{background:#CBDDE9;border-radius:999px;}
  .field-row{grid-template-columns:1fr;}
  .form-card{padding:22px 18px;}
  .cta-intro h2{font-size:25px;}
  .faq-item summary{font-size:15px;padding:16px 18px;}
  .faq-item .faq-answer{padding:0 18px 18px;font-size:14.5px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:480px){
  .hero h1{font-size:26px;}
  .section-head h2{font-size:22px;}
  .metric-value{font-size:30px;}
  .brand-text strong{font-size:14.5px;}
  .brand-text small{display:none;}
}

/* roulang page: article */
:root{
  --brand:#3E6F8E;
  --brand-deep:#2E5873;
  --brand-soft:#E8F1F7;
  --teal:#2F9E9B;
  --amber:#C47A2C;
  --amber-deep:#A9631F;
  --bg:#F6F9FB;
  --surface:#FFFFFF;
  --line:#DCE7EF;
  --ink:#17232E;
  --ink-2:#5C6B78;
  --ok:#2F9E74;
  --err:#C44949;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-card:0 10px 30px rgba(23,35,46,.08);
  --sh-card-hover:0 14px 36px rgba(23,35,46,.12);
  --sh-btn:0 6px 16px rgba(62,111,142,.22);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-deep);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit}
:focus-visible{outline:3px solid rgba(62,111,142,.25);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* 按钮体系 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.4;cursor:pointer;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-btn)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-amber{background:var(--amber);color:#fff;box-shadow:0 6px 16px rgba(196,122,44,.25)}
.btn-amber:hover{background:var(--amber-deep);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:#C6D8E5}
.btn-block{width:100%}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:22px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:42px;height:42px;border-radius:12px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:700;letter-spacing:1px;
  box-shadow:0 6px 14px rgba(62,111,142,.28);flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px}
.brand-text small{font-size:11.5px;color:var(--ink-2);letter-spacing:.3px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:10px;padding:5px;background:var(--bg);border:1px solid var(--line);border-radius:999px}
.nav-chip{
  padding:8px 16px;border-radius:999px;font-size:14px;color:var(--ink-2);
  white-space:nowrap;transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.nav-chip:hover{background:var(--brand-soft);color:var(--brand-deep)}
.nav-chip.is-active{background:#fff;color:var(--brand-deep);font-weight:600;box-shadow:0 2px 8px rgba(23,35,46,.08)}
.header-cta{margin-left:auto}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;padding:11px;
  border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--brand-deep);margin:4px 0;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer{display:none;border-top:1px solid var(--line);background:#fff}
.drawer.is-open{display:block}
.drawer-inner{padding:16px 0 22px;display:flex;flex-direction:column;gap:8px}
.drawer .nav-chip{padding:13px 16px;border-radius:12px;background:var(--bg);font-size:15px}
.drawer .btn{margin-top:10px}

/* 文章头部 */
.article-hero{position:relative;background:var(--surface);border-bottom:1px solid var(--line);overflow:hidden}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.07;pointer-events:none;
}
.article-hero .container{position:relative;z-index:1;padding-top:26px;padding-bottom:40px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:20px}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#B6C4CF}
.breadcrumb .current{color:var(--brand-deep);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-chip{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:12.5px;font-weight:600;margin-bottom:14px;
}
.article-chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
.article-title{font-size:38px;line-height:1.32;font-weight:700;letter-spacing:.2px;max-width:920px;margin-bottom:18px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:var(--ink-2)}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{display:block;width:5px;height:5px;border-radius:50%;background:#BCCAD5;font-style:normal}

/* 正文布局 */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;padding:44px 0 68px;align-items:start}
.article-main{min-width:0}
.article-cover{
  margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-card);aspect-ratio:16/7;background:#EAF1F6;
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-body{max-width:820px;margin-top:34px;font-size:16.5px;line-height:1.9;color:#1F2C38;word-wrap:break-word;overflow-wrap:break-word}
.article-body p{margin:0 0 20px}
.article-body h2{font-size:26px;line-height:1.45;font-weight:700;color:var(--ink);margin:42px 0 16px;padding-left:14px;border-left:4px solid var(--brand)}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--ink);margin:30px 0 12px}
.article-body h4{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink);margin:24px 0 10px}
.article-body ul{margin:0 0 20px;padding-left:24px;list-style:disc}
.article-body ol{margin:0 0 20px;padding-left:24px;list-style:decimal}
.article-body li{margin:8px 0}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--brand-soft);
  border-left:4px solid var(--brand);border-radius:0 12px 12px 0;color:var(--brand-deep);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:22px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th{background:var(--brand-soft);color:var(--brand-deep);text-align:left;font-weight:600;padding:11px 14px;border:1px solid var(--line)}
.article-body td{padding:11px 14px;border:1px solid var(--line)}
.article-body tbody tr:nth-child(even) td{background:#F8FBFD}
.article-body code{background:#EDF3F8;color:var(--brand-deep);padding:2px 6px;border-radius:6px;font-size:14px}
.article-body pre{background:#16232F;color:#E4EEF6;padding:18px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7}
.article-body pre code{background:none;color:inherit;padding:0}

/* 空状态 */
.empty-state{background:var(--surface);border:1px dashed #C8D8E4;border-radius:var(--r-card);padding:52px 28px;text-align:center}
.empty-icon{
  width:56px;height:56px;border-radius:16px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;margin:0 auto 18px;font-size:20px;font-weight:700;
}
.empty-title{font-size:20px;font-weight:700;margin-bottom:8px}
.empty-state p{color:var(--ink-2);margin-bottom:22px;font-size:15px}
.article-foot{margin-top:38px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px}

/* 侧栏 */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-card)}
.side-card h3{font-size:16px;font-weight:700;line-height:1.4;margin-bottom:14px;padding-left:10px;border-left:3px solid var(--brand)}
.side-links li+li{margin-top:6px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--ink);background:var(--bg);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.side-links a::after{content:"›";color:var(--brand);font-size:18px;line-height:1}
.side-links a:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateX(2px)}
.side-posts li{padding:12px 0;border-bottom:1px dashed var(--line)}
.side-posts li:last-child{border-bottom:0;padding-bottom:0}
.side-posts a{display:block;font-size:14.5px;line-height:1.65;color:var(--ink)}
.side-posts a:hover{color:var(--brand)}
.side-posts span{display:inline-block;margin-top:6px;font-size:12px;color:var(--ink-2)}
.side-cta{background:linear-gradient(160deg,#E9F3F9 0%,#FFFFFF 72%)}
.side-cta p{font-size:14px;color:var(--ink-2);margin-bottom:16px}

/* 相关阅读 */
.related{padding:6px 0 76px}
.section-head{max-width:700px;margin-bottom:28px}
.section-head h2{font-size:30px;line-height:1.4;font-weight:700;margin-bottom:10px}
.section-head p{color:var(--ink-2);font-size:15.5px}
.related-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:22px}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);color:inherit;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover);color:inherit}
.rel-media{aspect-ratio:16/9;overflow:hidden;background:#EAF1F6}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-media img{transform:scale(1.04)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px;line-height:1.55;font-weight:600;color:var(--ink)}
.rel-card:hover .rel-body h3{color:var(--brand-deep)}
.rel-card-lg .rel-body h3{font-size:20px}
.rel-body p{font-size:14.5px;line-height:1.75;color:var(--ink-2)}
.rel-meta{margin-top:auto;font-size:13px;font-weight:600;color:var(--brand-deep)}
.tag{align-self:flex-start;padding:4px 11px;border-radius:999px;background:var(--brand-soft);color:var(--brand-deep);font-size:12px;font-weight:600}

/* 转化面板 */
.cta-band{padding:0 0 84px}
.cta-card{
  display:grid;grid-template-columns:1.35fr 1fr;gap:34px;align-items:center;
  background:#16232F;border-radius:20px;padding:42px;box-shadow:0 18px 44px rgba(23,35,46,.18);
}
.cta-card h2{font-size:28px;line-height:1.4;font-weight:700;color:#fff;margin-bottom:12px}
.cta-card p{font-size:15px;color:#A9BCCB;margin-bottom:22px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-points{display:flex;flex-direction:column;gap:12px}
.cta-points li{position:relative;padding-left:24px;font-size:14.5px;line-height:1.7;color:#C9D8E3}
.cta-points li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--teal)}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:40px;height:40px;border-radius:12px;font-size:17px}
.footer-brand strong{display:block;font-size:16px;color:var(--ink)}
.footer-brand small{font-size:12px;color:var(--ink-2)}
.site-footer p{font-size:14px;line-height:1.85;color:var(--ink-2);max-width:430px}
.footer-col h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:16px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--ink-2)}
.footer-col a:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.footer-contact li{font-size:14px;color:var(--ink-2);display:flex;gap:8px;flex-wrap:wrap}
.footer-contact span{color:var(--ink);font-weight:600;min-width:56px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;
  gap:8px 20px;justify-content:space-between;font-size:13px;color:var(--ink-2);
}

/* 响应式 */
@media (max-width:1199px){
  .container{max-width:960px}
  .article-layout{gap:34px}
}
@media (max-width:991px){
  .main-nav,.header-cta{display:none}
  .nav-toggle{display:block}
  .article-title{font-size:32px}
  .article-layout{grid-template-columns:1fr;gap:30px;padding:36px 0 56px}
  .article-side{position:static}
  .related-grid{grid-template-columns:1fr 1fr}
  .rel-card-lg{grid-column:1 / -1}
  .cta-card{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .site-footer p{max-width:none}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .header-inner{min-height:68px;gap:12px}
  .brand-mark{width:38px;height:38px;font-size:16px;border-radius:10px}
  .brand-text strong{font-size:15px}
  .brand-text small{display:none}
  .article-hero .container{padding-top:20px;padding-bottom:30px}
  .article-title{font-size:27px;line-height:1.34}
  .article-body{font-size:15.5px;line-height:1.82;margin-top:26px}
  .article-body h2{font-size:21px;margin:34px 0 14px}
  .article-body h3{font-size:18px}
  .section-head h2{font-size:23px}
  .related-grid{grid-template-columns:1fr}
  .cta-card{padding:26px 20px;border-radius:16px}
  .cta-card h2{font-size:22px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn,.article-foot .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:480px){
  .article-title{font-size:24px}
  .article-chip{font-size:12px}
  .article-meta{font-size:13px;gap:8px 16px}
  .btn{padding:11px 18px;font-size:14.5px}
}

/* roulang page: category3 */
:root{
  --brand:#3E6F8E;
  --brand-dark:#2E5873;
  --brand-light:#E8F1F7;
  --teal:#2F9E9B;
  --amber:#C47A2C;
  --bg:#F6F9FB;
  --surface:#FFFFFF;
  --line:#DCE7EF;
  --text:#17232E;
  --muted:#5C6B78;
  --success:#2F9E74;
  --error:#C44949;
  --hud:#0F1E29;
  --hud-line:rgba(255,255,255,.14);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow:0 10px 30px rgba(23,35,46,.08);
  --shadow-hover:0 14px 36px rgba(23,35,46,.12);
  --shadow-btn:0 6px 16px rgba(62,111,142,.22);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover{color:var(--brand-dark);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--text);width:100%;}
:focus-visible{outline:3px solid rgba(62,111,142,.25);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(2px);
}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:74px;
  padding:10px 0;
}
.brand{
  display:flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--text);flex-shrink:0;
}
.brand:hover{text-decoration:none;color:var(--text);}
.brand-mark{
  width:42px;height:42px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--teal) 100%);
  color:#fff;font-weight:700;font-size:19px;
  box-shadow:var(--shadow-btn);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.2px;}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.3px;}

.main-nav{
  display:flex;align-items:center;gap:4px;
  margin-left:auto;
  padding:5px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:999px;
}
.nav-chip{
  display:inline-flex;align-items:center;
  padding:8px 16px;
  border-radius:999px;
  font-size:14.5px;font-weight:500;
  color:var(--muted);
  white-space:nowrap;
  text-decoration:none;
  transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.nav-chip:hover{color:var(--brand-dark);background:var(--brand-light);text-decoration:none;}
.nav-chip.is-active{
  background:#fff;color:var(--brand-dark);font-weight:600;
  box-shadow:0 2px 10px rgba(23,35,46,.12);
}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;
  border-radius:var(--radius-btn);
  background:var(--amber);color:#fff;
  font-size:14.5px;font-weight:600;
  box-shadow:0 6px 16px rgba(196,122,44,.24);
  white-space:nowrap;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.header-cta:hover{background:#AE6B23;color:#fff;text-decoration:none;transform:translateY(-1px);}
.header-cta:active{transform:translateY(1px);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:16px 0 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .nav-chip{
  display:block;width:100%;
  padding:13px 16px;border-radius:12px;
  border:1px solid var(--line);
  margin-bottom:10px;font-size:15px;
}
.mobile-drawer .nav-chip.is-active{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark);box-shadow:none;}
.mobile-drawer .header-cta{display:flex;width:100%;justify-content:center;margin-top:6px;}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;margin-bottom:16px;
  border-radius:999px;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:13px;font-weight:600;letter-spacing:.4px;
}
.section-head h2{font-size:32px;margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  text-decoration:none;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  border:1px solid transparent;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(62,111,142,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--amber);color:#fff;box-shadow:0 6px 16px rgba(196,122,44,.24);}
.btn-accent:hover{background:#AE6B23;color:#fff;transform:translateY(-2px);}
.btn-ghost{background:#fff;color:var(--brand-dark);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-2px);}
.btn-block{width:100%;}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:12.5px;font-weight:600;
}
.tag-teal{background:rgba(47,158,155,.12);color:#1F7876;}
.tag-amber{background:rgba(196,122,44,.14);color:#9C5F1E;}
.tag-success{background:rgba(47,158,116,.14);color:#226F51;}

.text-link{font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;}
.text-link::after{content:"→";font-size:14px;transition:transform .18s ease;}
.text-link:hover::after{transform:translateX(3px);}

/* ---------- Hero ---------- */
.hero{padding:64px 0 72px;background:
  radial-gradient(120% 90% at 88% 8%,rgba(62,111,142,.10) 0%,rgba(62,111,142,0) 60%),
  linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:#B7C5D0;}
.hero h1{font-size:44px;line-height:1.24;margin-bottom:18px;letter-spacing:-.5px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{font-size:16.5px;color:var(--muted);max-width:620px;margin-bottom:24px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-note{display:flex;flex-wrap:wrap;gap:18px;font-size:13.5px;color:var(--muted);}
.hero-note i{font-style:normal;color:var(--success);font-weight:700;margin-right:6px;}

.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow);
  border:1px solid var(--line);
}
.hero-float{
  position:absolute;left:-18px;bottom:-20px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;box-shadow:var(--shadow);
  min-width:210px;
}
.hero-float strong{display:block;font-size:24px;color:var(--brand-dark);line-height:1.2;}
.hero-float span{font-size:13px;color:var(--muted);}

/* ---------- 指标条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease;
}
.metric:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.metric strong{display:block;font-size:38px;line-height:1.1;color:var(--brand-dark);font-weight:700;letter-spacing:-1px;}
.metric strong small{font-size:16px;font-weight:600;margin-left:2px;color:var(--brand);}
.metric span{display:block;font-size:14px;color:var(--muted);margin-top:8px;}
.metric .metric-tag{margin-top:14px;}

/* ---------- 筛选 + 帮助主题 ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:14px 16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:var(--shadow);
  margin-bottom:32px;
}
.filter-label{font-size:13.5px;color:var(--muted);font-weight:600;padding:0 6px;}
.filter-chip{
  padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);
  background:#fff;color:var(--muted);
  font-size:14px;font-weight:500;
  transition:all .18s ease;
}
.filter-chip:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-light);}
.filter-chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:var(--shadow-btn);}

.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.help-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px 22px;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.help-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#C6D8E5;}
.help-card.is-hidden{display:none;}
.help-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}
.icon-badge{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);
}
.icon-badge svg{width:22px;height:22px;}
.help-card h3{font-size:19px;margin-bottom:10px;}
.help-card p{font-size:14.5px;color:var(--muted);}
.mini-steps{margin:16px 0 18px;display:flex;flex-direction:column;gap:8px;}
.mini-steps li{
  position:relative;padding-left:22px;
  font-size:13.5px;color:var(--muted);line-height:1.65;
}
.mini-steps li::before{
  content:"";position:absolute;left:4px;top:9px;
  width:7px;height:7px;border-radius:50%;
  background:var(--teal);
}
.help-card .text-link{margin-top:auto;}
.empty-state{
  display:none;
  padding:56px 24px;text-align:center;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
}
.empty-state p{color:var(--muted);font-size:15px;margin-top:10px;}

/* ---------- 深色排查路径 ---------- */
.hud{
  background:var(--hud);
  border-radius:20px;
  padding:48px 40px;
  color:#E7EEF4;
  position:relative;overflow:hidden;
}
.hud::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.hud-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.hud h2{color:#fff;font-size:30px;margin-bottom:14px;}
.hud .hud-lead{color:#9FB3C2;font-size:15.5px;margin-bottom:28px;}
.path-list{display:flex;flex-direction:column;gap:14px;}
.path-item{
  display:flex;gap:18px;
  padding:18px 20px;
  border:1px solid var(--hud-line);
  border-radius:14px;
  background:rgba(255,255,255,.035);
  transition:background-color .2s ease,border-color .2s ease;
}
.path-item:hover{background:rgba(255,255,255,.07);border-color:rgba(47,158,155,.55);}
.path-num{
  flex-shrink:0;width:38px;height:38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,158,155,.18);color:#7FD8D6;
  font-weight:700;font-size:15px;
}
.path-item h3{font-size:17px;color:#fff;margin-bottom:6px;}
.path-item p{font-size:14px;color:#9FB3C2;line-height:1.7;}
.hud-panel{
  border:1px solid var(--hud-line);
  border-radius:16px;
  padding:26px 24px;
  background:rgba(255,255,255,.04);
}
.hud-panel h3{color:#fff;font-size:18px;margin-bottom:18px;}
.hud-bar{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.hud-bar-head{display:flex;justify-content:space-between;font-size:13.5px;color:#9FB3C2;}
.hud-bar-track{height:8px;border-radius:999px;background:rgba(255,255,255,.10);overflow:hidden;}
.hud-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--teal),#7FD8D6);}
.hud-bar-fill.amber{background:linear-gradient(90deg,var(--amber),#E0A35E);}
.hud-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px;}
.hud-stat{border:1px solid var(--hud-line);border-radius:12px;padding:14px 16px;}
.hud-stat strong{display:block;font-size:24px;color:#fff;line-height:1.2;}
.hud-stat span{font-size:12.5px;color:#9FB3C2;}

/* ---------- 求助方式行式列表 ---------- */
.channel-list{display:flex;flex-direction:column;gap:16px;}
.channel-row{
  display:grid;grid-template-columns:64px 1fr auto;
  gap:24px;align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 26px;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.channel-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#C6D8E5;}
.channel-index{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);
  font-weight:700;font-size:18px;
}
.channel-body h3{font-size:19px;margin-bottom:8px;}
.channel-body p{font-size:14.5px;color:var(--muted);max-width:720px;}
.channel-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;}
.channel-action{display:flex;flex-direction:column;gap:10px;align-items:flex-end;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start;}
.faq-side h2{font-size:30px;margin-bottom:16px;}
.faq-side p{color:var(--muted);font-size:15.5px;margin-bottom:24px;}
.faq-side .btn{margin-top:6px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-left:4px solid var(--brand);background:linear-gradient(180deg,var(--brand-light) 0%,#fff 42%);box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-dark);}
.faq-mark{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:16px;font-weight:700;line-height:1;
  transition:transform .22s ease,background-color .22s ease;
}
.faq-item.is-open .faq-mark{background:var(--brand);color:#fff;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 22px 22px;font-size:15px;color:var(--muted);line-height:1.85;}
.faq-a-inner ul{display:flex;flex-direction:column;gap:8px;margin-top:10px;}
.faq-a-inner li{position:relative;padding-left:20px;}
.faq-a-inner li::before{content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand);}

/* ---------- 联系 / 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:32px;align-items:start;}
.form-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px;
  box-shadow:var(--shadow);
}
.form-card h2{font-size:26px;margin-bottom:10px;}
.form-card > p{color:var(--muted);font-size:15px;margin-bottom:24px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.field label span{color:var(--error);margin-left:4px;}
.field input,.field select,.field textarea{
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{resize:vertical;min-height:112px;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(62,111,142,.18);
}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:4px 0 20px;}
.check-line input{width:16px;height:16px;margin-top:3px;flex-shrink:0;}
.form-msg{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--radius-btn);
  font-size:14px;line-height:1.7;
}
.form-msg.is-ok{display:block;background:rgba(47,158,116,.12);color:#226F51;border:1px solid rgba(47,158,116,.3);}
.form-msg.is-err{display:block;background:rgba(196,73,73,.10);color:#9C3636;border:1px solid rgba(196,73,73,.28);}

.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px 26px;
  box-shadow:var(--shadow);
  margin-bottom:24px;
}
.side-card h3{font-size:19px;margin-bottom:16px;}
.step-list{display:flex;flex-direction:column;gap:16px;}
.step-list li{display:flex;gap:14px;align-items:flex-start;}
.step-dot{
  flex-shrink:0;width:28px;height:28px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:13px;font-weight:700;
}
.step-list strong{display:block;font-size:15px;margin-bottom:4px;}
.step-list p{font-size:13.5px;color:var(--muted);}
.side-cover{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);margin-bottom:18px;}
.side-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.contact-lines{display:flex;flex-direction:column;gap:12px;font-size:14.5px;color:var(--muted);}
.contact-lines b{color:var(--text);font-weight:600;margin-right:8px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1E29;color:#B9CAD6;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand) 0%,var(--teal) 100%);box-shadow:none;}
.footer-brand strong{display:block;color:#fff;font-size:16px;}
.footer-brand small{display:block;font-size:12px;color:#8FA5B4;letter-spacing:.3px;}
.site-footer p{font-size:14px;line-height:1.85;color:#9FB3C2;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:#B9CAD6;}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-contact li{font-size:14px;color:#B9CAD6;}
.footer-contact span{display:block;font-size:12px;color:#7E94A3;margin-bottom:2px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;font-size:13px;color:#8FA5B4;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .help-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
  .footer-grid > div:last-child{grid-column:span 3;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .hero{padding:48px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:32px;}
  .hero-visual{order:-1;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .hud{padding:36px 26px;}
  .hud-grid{grid-template-columns:1fr;gap:32px;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .contact-grid{grid-template-columns:1fr;}
  .channel-row{grid-template-columns:56px 1fr;gap:18px;}
  .channel-action{grid-column:1 / -1;align-items:flex-start;flex-direction:row;flex-wrap:wrap;}
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .help-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr 1fr;gap:16px;}
  .metric{padding:20px 18px;}
  .metric strong{font-size:30px;}
  .filter-bar{border-radius:16px;overflow-x:auto;flex-wrap:nowrap;padding:12px;}
  .filter-chip{white-space:nowrap;}
  .hero-actions .btn{width:100%;}
  .form-row{grid-template-columns:1fr;}
  .form-card{padding:24px 20px;}
  .hero-float{position:static;margin-top:16px;left:auto;bottom:auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-grid > div:last-child{grid-column:auto;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:480px){
  .hero h1{font-size:27px;}
  .section-head h2,.faq-side h2,.hud h2{font-size:23px;}
  .body,body{font-size:15px;}
  .hud{padding:28px 18px;}
  .hud-stats{grid-template-columns:1fr;}
  .channel-row{padding:20px 18px;}
}

/* roulang page: category2 */
:root{
  --brand:#3E6F8E;
  --brand-dark:#2E5873;
  --brand-light:#E8F1F7;
  --teal:#2F9E9B;
  --teal-light:#E4F4F3;
  --amber:#C47A2C;
  --amber-light:#FAF0E3;
  --bg:#F6F9FB;
  --surface:#FFFFFF;
  --border:#DCE7EF;
  --text:#17232E;
  --muted:#5C6B78;
  --ok:#2F9E74;
  --err:#C44949;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-card:0 10px 30px rgba(23,35,46,.08);
  --shadow-card-hover:0 14px 36px rgba(23,35,46,.12);
  --shadow-btn:0 6px 16px rgba(62,111,142,.22);
  --space-section:80px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(62,111,142,.25);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;text-decoration:none;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 3px 10px rgba(62,111,142,.22);}
.btn-amber{background:var(--amber);color:#fff;box-shadow:0 6px 16px rgba(196,122,44,.24);}
.btn-amber:hover{background:#AE6A24;color:#fff;text-decoration:none;transform:translateY(-2px);}
.btn-amber:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--border);}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:#C6D9E6;text-decoration:none;transform:translateY(-2px);}
.btn-text{padding:8px 12px;color:var(--brand);font-weight:600;}
.btn-text:hover{background:var(--brand-light);text-decoration:none;border-radius:8px;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  backdrop-filter:saturate(120%) blur(2px);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--text);}
.brand:hover{text-decoration:none;color:var(--text);}
.brand-mark{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand) 0%,var(--teal) 100%);
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(62,111,142,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;}
.brand-text small{font-size:12px;color:var(--muted);}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;flex-wrap:wrap;}
.nav-chip{
  padding:9px 16px;border-radius:999px;font-size:14px;font-weight:600;
  color:var(--muted);background:transparent;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.nav-chip:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none;}
.nav-chip.is-active{background:#fff;color:var(--brand);border-color:var(--border);box-shadow:0 4px 12px rgba(23,35,46,.07);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  display:none;border-top:1px solid var(--border);background:#fff;
  padding:14px 24px 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer nav{display:flex;flex-direction:column;gap:6px;}
.mobile-drawer .nav-chip{border-radius:10px;padding:12px 14px;}
.mobile-drawer .drawer-cta{margin-top:12px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--space-section) 0;}
.section-alt{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:36px;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
  background:var(--brand-light);border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.section-title{font-size:30px;}
.section-desc{margin-top:12px;color:var(--muted);font-size:16px;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--surface);
  border-bottom:1px solid var(--border);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.07;pointer-events:none;
}
.page-hero .container{position:relative;padding-top:40px;padding-bottom:56px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:#B7C6D2;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--brand-light);color:var(--brand-dark);
}
.chip-teal{background:var(--teal-light);color:#1F7B79;}
.chip-amber{background:var(--amber-light);color:#9A5A15;}
.page-hero h1{font-size:42px;line-height:1.22;letter-spacing:-.3px;}
.hero-sub{margin-top:18px;font-size:17px;color:var(--muted);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:#F1F6FA;color:var(--brand-dark);border:1px solid var(--border);
}
.badge i{width:7px;height:7px;border-radius:50%;background:var(--teal);display:inline-block;}
.hero-media{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  box-shadow:var(--shadow-card);border:1px solid var(--border);background:#fff;
}
.hero-media img{width:100%;height:340px;object-fit:cover;}
.hero-media figcaption{
  position:absolute;left:16px;right:16px;bottom:16px;
  background:rgba(23,35,46,.78);color:#fff;font-size:13px;
  padding:10px 14px;border-radius:10px;line-height:1.6;
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.timeline::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:2px;
  background:linear-gradient(90deg,var(--brand-light),var(--teal-light));z-index:0;
}
.step{position:relative;z-index:1;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);}
.step-num{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;color:#fff;background:linear-gradient(140deg,var(--brand),var(--teal));
  margin-bottom:16px;box-shadow:0 8px 18px rgba(62,111,142,.2);
}
.step h3{font-size:19px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--muted);}
.step .step-note{margin-top:12px;font-size:13px;color:var(--brand);font-weight:600;}

/* ---------- 验证方式卡 ---------- */
.verify-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.verify-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px 24px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;gap:14px;
}
.verify-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:#C6D9E6;}
.vc-icon{
  width:46px;height:46px;border-radius:12px;background:var(--brand-light);
  color:var(--brand-dark);display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;
}
.verify-card h3{font-size:19px;}
.verify-card p{font-size:14.5px;color:var(--muted);}
.vc-list{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.vc-list li{position:relative;padding-left:18px;font-size:14px;color:var(--muted);}
.vc-list li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--teal);}
.vc-list li strong{color:var(--text);font-weight:600;}

/* ---------- 对比 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-col{
  border-radius:var(--radius-card);padding:28px 26px;border:1px solid var(--border);
  background:var(--surface);box-shadow:var(--shadow-card);
}
.compare-col.legacy{background:#F2F5F8;color:var(--muted);}
.compare-col.current{background:linear-gradient(160deg,#FFFFFF 0%,var(--brand-light) 100%);border-color:#C6D9E6;}
.compare-title{font-size:20px;margin-bottom:6px;}
.compare-sub{font-size:13.5px;color:var(--muted);margin-bottom:18px;}
.check-list{display:flex;flex-direction:column;gap:12px;}
.check-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;}
.check-list .mark{
  flex:0 0 auto;width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;margin-top:4px;
}
.mark-yes{background:var(--teal-light);color:#1F7B79;}
.mark-no{background:#E7ECF1;color:#8A98A4;}
.bar-wrap{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.bar-item span{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:6px;}
.bar{height:8px;border-radius:999px;background:#E7ECF1;overflow:hidden;}
.bar i{display:block;height:100%;border-radius:999px;background:var(--brand);}
.bar i.teal{background:var(--teal);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
.faq-side p{margin-top:14px;color:var(--muted);font-size:15px;}
.faq-aside-card{
  margin-top:24px;background:var(--amber-light);border:1px solid #F0DFC7;border-radius:var(--radius-card);
  padding:20px 22px;
}
.faq-aside-card strong{display:block;font-size:15px;margin-bottom:6px;color:#9A5A15;}
.faq-aside-card p{font-size:14px;color:#8A6329;margin:0;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-left:4px solid transparent;
  border-radius:12px;overflow:hidden;transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-left-color:var(--brand);background:var(--brand-light);box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;text-align:left;display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--brand-dark);}
.faq-q .sign{flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:#fff;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--brand);transition:transform .2s ease;}
.faq-item.is-open .sign{transform:rotate(45deg);}
.faq-a{display:none;padding:0 20px 20px;font-size:14.8px;color:#3B4A57;line-height:1.85;}
.faq-a ul{display:flex;flex-direction:column;gap:8px;margin-top:8px;}
.faq-a li{position:relative;padding-left:16px;}
.faq-a li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand);}
.faq-item.is-open .faq-a{display:block;}

/* ---------- 支持表单 ---------- */
.support-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:start;}
.form-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:32px 30px;box-shadow:var(--shadow-card);
}
.form-card h3{font-size:22px;margin-bottom:8px;}
.form-card .form-intro{font-size:14.5px;color:var(--muted);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:#2C3B48;}
.field label .req{color:var(--err);margin-left:4px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#FBFDFE;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field textarea{min-height:108px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(62,111,142,.14);
}
.field .err-text{display:none;margin-top:6px;font-size:12.5px;color:var(--err);}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--err);background:#FDF5F5;}
.field.has-error .err-text{display:block;}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);margin:6px 0 20px;}
.checkbox-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);flex:0 0 auto;}
.form-status{display:none;margin-top:14px;font-size:14px;padding:12px 14px;border-radius:10px;}
.form-status.is-ok{display:block;background:#EAF7F1;color:#1F7A59;border:1px solid #CBE9DC;}
.form-status.is-err{display:block;background:#FDF1F1;color:#A33A3A;border:1px solid #F1D5D5;}
.assure-card{
  background:linear-gradient(160deg,#FFFFFF 0%,var(--brand-light) 100%);
  border:1px solid #C6D9E6;border-radius:var(--radius-card);padding:32px 30px;box-shadow:var(--shadow-card);
}
.assure-card h3{font-size:21px;margin-bottom:16px;}
.assure-item{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed #C6D9E6;}
.assure-item:last-of-type{border-bottom:0;}
.assure-item .ai-num{
  flex:0 0 auto;width:32px;height:32px;border-radius:10px;background:#fff;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--brand);font-size:14px;
}
.assure-item h4{font-size:15.5px;margin-bottom:4px;}
.assure-item p{font-size:13.8px;color:var(--muted);}
.assure-media{margin-top:20px;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--border);}
.assure-media img{width:100%;height:180px;object-fit:cover;}

/* ---------- 页脚 ---------- */
.site-footer{background:#132029;color:#C6D3DD;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{width:40px;height:40px;}
.footer-brand strong{display:block;color:#fff;font-size:16px;}
.footer-brand small{display:block;font-size:12px;color:#8FA3B2;}
.site-footer p{font-size:14px;color:#9FB2C0;line-height:1.85;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#9FB2C0;}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-contact li{font-size:14px;color:#9FB2C0;display:flex;gap:8px;flex-wrap:wrap;}
.footer-contact li span{color:#6E8494;flex:0 0 auto;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#7E93A2;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:960px;}
  .hero-grid{gap:32px;}
  .verify-grid{gap:20px;}
}
@media (max-width:991px){
  :root{--space-section:64px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-media img{height:280px;}
  .page-hero h1{font-size:34px;}
  .timeline{grid-template-columns:repeat(2,1fr);}
  .timeline::before{display:none;}
  .verify-grid{grid-template-columns:1fr 1fr;}
  .compare{grid-template-columns:1fr;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .support-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  :root{--space-section:48px;}
  .container{padding:0 16px;}
  .page-hero .container{padding-top:26px;padding-bottom:44px;}
  .page-hero h1{font-size:29px;}
  .section-title{font-size:23px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .timeline{grid-template-columns:1fr;}
  .verify-grid{grid-template-columns:1fr;}
  .compare-col{padding:24px 20px;}
  .form-card,.assure-card{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .faq-q{font-size:15px;padding:16px;}
}
@media (max-width:480px){
  .page-hero h1{font-size:26px;}
  .section-title{font-size:21px;}
  body{font-size:15px;}
  .brand-text strong{font-size:15px;}
  .brand-text small{display:none;}
  .hero-media img{height:220px;}
}