/* roulang page: index */
:root{
  --blue:#1F5EFF;
  --blue-dark:#1749c9;
  --blue-soft:#EAF0FF;
  --teal:#17B3A3;
  --teal-soft:#E6F7F5;
  --orange:#FF7A3D;
  --orange-dark:#ef6a2c;
  --bg:#F7FAFF;
  --card:#FFFFFF;
  --text:#0B1B33;
  --muted:#5B6B84;
  --border:#E3ECF7;
  --success:#16A34A;
  --warning:#F59E0B;
  --danger:#DC2626;
  --radius-btn:12px;
  --radius-card:18px;
  --radius-img:16px;
  --shadow:0 10px 30px rgba(15,42,80,.08);
  --shadow-hover:0 16px 40px rgba(15,42,80,.14);
  --shadow-nav:0 6px 20px rgba(15,42,80,.06);
  --nav-h:72px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Inter",Arial,sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--blue);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0 0 16px;font-weight:700;line-height:1.35;color:var(--text);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--text);}
:focus-visible{outline:3px solid rgba(31,94,255,.25);outline-offset:2px;border-radius:6px;}

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

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  font-size:16px;
  font-weight:600;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn i{font-size:15px;}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(31,94,255,.24);}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(31,94,255,.3);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(31,94,255,.22);}
.btn-outline{background:#fff;color:var(--blue);border-color:#C9DAFF;}
.btn-outline:hover{background:var(--blue-soft);color:var(--blue-dark);border-color:var(--blue);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-download{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(255,122,61,.28);}
.btn-download:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,122,61,.34);}
.btn-download:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.8);color:var(--text);border-color:var(--border);}
.btn-ghost:hover{background:#fff;color:var(--blue);transform:translateY(-2px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:10px;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 14px;
  font-size:13px;
  font-weight:600;
  border-radius:999px;
  background:var(--blue-soft);
  color:var(--blue);
  line-height:1.6;
}
.badge-teal{background:var(--teal-soft);color:#0E8A7D;}
.badge-orange{background:#FFF0E8;color:#E2611F;}
.badge-green{background:#E8F8EE;color:var(--success);}
.badge-gray{background:#EEF3FA;color:var(--muted);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-nav);}
.nav-inner{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.2px;
}
.logo:hover{color:var(--blue);}
.logo-mark{
  width:38px;
  height:38px;
  border-radius:12px;
  background:linear-gradient(135deg,var(--blue),#4F86FF);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  box-shadow:0 6px 16px rgba(31,94,255,.28);
  flex:0 0 38px;
}
.logo-text{white-space:nowrap;}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-links a{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 16px;
  font-size:15px;
  font-weight:600;
  color:var(--muted);
  border-radius:10px;
}
.nav-links a:hover{background:var(--blue-soft);color:var(--blue);}
.nav-links a.active{background:var(--blue-soft);color:var(--blue);}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--border);
  color:var(--text);
  font-size:18px;
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{background:var(--blue-soft);color:var(--blue);}

.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(11,27,51,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease;
  z-index:200;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;
  right:0;
  width:82%;
  max-width:340px;
  height:100%;
  background:#fff;
  z-index:210;
  transform:translateX(102%);
  transition:transform .28s ease;
  padding:22px 20px 32px;
  overflow-y:auto;
  box-shadow:-10px 0 40px rgba(15,42,80,.16);
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer .drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:18px;
}
.mobile-drawer .drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;font-size:17px;color:var(--muted);
}
.mobile-drawer nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:52px;
  padding:0 14px;
  border-radius:12px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  border:1px solid transparent;
}
.mobile-drawer nav a:hover{background:var(--blue-soft);color:var(--blue);}
.mobile-drawer nav a.active{background:var(--blue-soft);color:var(--blue);border-color:#D6E3FF;}
.drawer-cta{margin-top:20px;}
.drawer-cta .btn{width:100%;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(247,250,255,.88) 0%,rgba(247,250,255,.96) 65%,#F7FAFF 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center right;
  padding:64px 0 72px;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  right:-120px;
  top:-120px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(23,179,163,.14),transparent 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:48px;
  align-items:center;
  min-height:520px;
  position:relative;
  z-index:2;
}
.hero-copy{max-width:620px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.hero h1{
  font-size:46px;
  line-height:1.25;
  letter-spacing:-.5px;
  margin-bottom:18px;
}
.hero h1 .hl{color:var(--blue);}
.hero-sub{
  font-size:17px;
  color:var(--muted);
  line-height:1.9;
  margin-bottom:28px;
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  padding-top:22px;
  border-top:1px dashed var(--border);
}
.hero-fact{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--muted);}
.hero-fact i{color:var(--teal);font-size:15px;}
.hero-fact strong{font-family:var(--font-num);color:var(--text);font-size:15px;}

.device-wrap{
  position:relative;
  display:flex;
  justify-content:center;
}
.device-frame{
  width:290px;
  border-radius:32px;
  background:#fff;
  padding:12px;
  box-shadow:0 24px 60px rgba(15,42,80,.16);
  border:1px solid var(--border);
}
.device-frame img{
  width:100%;
  height:480px;
  object-fit:cover;
  border-radius:24px;
}
.device-tag{
  position:absolute;
  background:#fff;
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:12px 16px;
  font-size:13px;
  font-weight:600;
  color:var(--text);
  display:flex;
  align-items:center;
  gap:10px;
  border:1px solid var(--border);
}
.device-tag i{color:var(--blue);font-size:16px;}
.device-tag small{display:block;font-weight:400;color:var(--muted);font-size:12px;}
.device-tag.tag-a{left:-6px;top:64px;}
.device-tag.tag-b{right:-10px;bottom:80px;}
.device-tag.tag-b i{color:var(--orange);}

/* ---------- section base ---------- */
.section{padding:88px 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:46px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--teal);
  margin-bottom:12px;
  text-transform:uppercase;
}
.section-head h2{font-size:31px;margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}

/* ---------- value cards ---------- */
.value-grid{
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:24px;
  align-items:stretch;
}
.card-feature,
.card{
  background:var(--card);
  border-radius:var(--radius-card);
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.card-feature{padding:32px;display:flex;flex-direction:column;}
.card{padding:26px;}
.card:hover,.card-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.card-feature h3{font-size:24px;margin-bottom:14px;}
.card-feature p{color:var(--muted);margin-bottom:22px;}
.card-feature img{width:100%;height:230px;object-fit:cover;border-radius:var(--radius-img);margin-top:auto;}
.mini-stack{display:grid;gap:24px;}
.mini-stack .card h3{font-size:20px;margin-bottom:10px;}
.mini-stack .card p{color:var(--muted);font-size:15px;margin:0;}
.icon-round{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;margin-bottom:16px;
}
.icon-blue{background:var(--blue-soft);color:var(--blue);}
.icon-teal{background:var(--teal-soft);color:#0E8A7D;}
.icon-orange{background:#FFF0E8;color:#E2611F;}

/* ---------- carousel ---------- */
.carousel-shell{position:relative;}
.shot-track{
  display:flex;
  gap:24px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:8px 4px 26px;
  scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-item{
  scroll-snap-align:start;
  flex:0 0 300px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:24px;
  padding:16px;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.shot-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);}
.shot-item img{
  width:100%;
  height:440px;
  object-fit:cover;
  border-radius:18px;
}
.shot-item h3{font-size:18px;margin:16px 0 6px;}
.shot-item p{font-size:14px;color:var(--muted);margin:0;}
.carousel-controls{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  margin-top:4px;
}
.carousel-arrows{display:flex;gap:10px;}
.arrow-btn{
  width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--border);
  color:var(--text);font-size:16px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);
  transition:all .2s ease;
}
.arrow-btn:hover{background:var(--blue);color:#fff;border-color:var(--blue);transform:translateY(-2px);}
.dots{display:flex;gap:8px;}
.dot{
  width:10px;height:10px;border-radius:50%;
  background:#CBD9EC;transition:all .25s ease;
}
.dot.is-active{width:26px;border-radius:999px;background:var(--blue);}

/* ---------- spec table ---------- */
.spec-table{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.spec-row{
  display:grid;
  grid-template-columns:220px 1fr;
  gap:20px;
  padding:22px 28px;
  border-bottom:1px solid var(--border);
  align-items:center;
}
.spec-row:last-child{border-bottom:0;}
.spec-row:nth-child(even){background:#FBFDFF;}
.spec-key{
  display:flex;align-items:center;gap:10px;
  font-weight:600;font-size:15px;color:var(--text);
}
.spec-key i{color:var(--blue);width:18px;text-align:center;}
.spec-val{color:var(--muted);font-size:15px;}
.spec-val strong{color:var(--text);font-family:var(--font-num);}
.spec-side{
  background:linear-gradient(160deg,#EFF4FF,#FFFFFF);
  border-radius:var(--radius-card);
  border:1px solid var(--border);
  padding:28px;
  height:100%;
}
.spec-side h3{font-size:20px;}
.spec-side ul li{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px 0;border-bottom:1px dashed var(--border);
  font-size:15px;color:var(--muted);
}
.spec-side ul li:last-child{border-bottom:0;}
.spec-side ul li i{color:var(--success);margin-top:6px;}

/* ---------- reviews ---------- */
.review-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:start;
}
.review-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.review-card:nth-child(2){margin-top:32px;}
.review-card:nth-child(3){margin-top:14px;}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;color:#fff;font-size:16px;flex:0 0 46px;
  background:linear-gradient(135deg,var(--blue),#5E8DFF);
}
.avatar.v2{background:linear-gradient(135deg,var(--teal),#4FD1C0);}
.avatar.v3{background:linear-gradient(135deg,var(--orange),#FFA574);}
.review-name{font-weight:600;font-size:15px;}
.review-meta{font-size:13px;color:var(--muted);}
.stars{color:#FFB020;font-size:13px;letter-spacing:2px;margin-bottom:10px;}
.review-card p{font-size:15px;color:var(--muted);margin:0;}

/* ---------- download ---------- */
.download-panel{
  background:linear-gradient(135deg,#0B1B33 0%,#173B72 55%,#1F5EFF 130%);
  border-radius:26px;
  padding:52px 48px;
  color:#fff;
  position:relative;
  overflow:hidden;
  box-shadow:0 24px 60px rgba(15,42,80,.22);
}
.download-panel::before{
  content:"";
  position:absolute;right:-80px;bottom:-90px;
  width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,61,.35),transparent 66%);
}
.download-panel h2{color:#fff;font-size:30px;margin-bottom:12px;}
.download-panel p{color:rgba(255,255,255,.78);max-width:560px;}
.download-grid{
  display:grid;
  grid-template-columns:1.35fr .65fr;
  gap:32px;
  align-items:center;
  position:relative;
  z-index:2;
}
.download-actions{display:flex;flex-wrap:wrap;gap:14px;margin:24px 0 20px;}
.download-actions .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.3);}
.download-actions .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;}
.download-meta{
  display:flex;flex-wrap:wrap;gap:12px 26px;
  font-size:14px;color:rgba(255,255,255,.8);
}
.download-meta span{display:flex;align-items:center;gap:8px;}
.download-meta strong{font-family:var(--font-num);color:#fff;}
.qr-card{
  background:#fff;
  border-radius:20px;
  padding:20px;
  text-align:center;
  color:var(--text);
}
.qr-box{
  width:100%;
  aspect-ratio:1/1;
  border-radius:14px;
  background:
    repeating-linear-gradient(0deg,#0B1B33 0 8px,#fff 8px 16px),
    repeating-linear-gradient(90deg,#0B1B33 0 8px,transparent 8px 16px);
  background-blend-mode:multiply;
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:14px;
  overflow:hidden;
}
.qr-box i{font-size:34px;color:#fff;background:var(--blue);padding:12px;border-radius:12px;}
.qr-card strong{display:block;font-size:15px;margin-bottom:4px;}
.qr-card small{color:var(--muted);font-size:13px;}
.safe-note{
  display:flex;align-items:flex-start;gap:10px;
  margin-top:22px;padding:14px 18px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  border-radius:14px;
  font-size:14px;color:rgba(255,255,255,.85);
}
.safe-note i{color:#7FE3D3;margin-top:5px;}

/* ---------- news list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  height:100%;
  transition:transform .25s ease,box-shadow .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.news-cover{
  width:100%;
  height:180px;
  object-fit:cover;
  background:linear-gradient(135deg,#E7EFFF,#F7FAFF);
}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  font-size:18px;
  line-height:1.55;
  margin:12px 0 10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-body h3 a:hover{color:var(--blue);}
.news-body p{
  font-size:14px;
  color:var(--muted);
  margin:0 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--muted);
  border-top:1px solid var(--border);
  padding-top:14px;
}
.news-foot .more{color:var(--blue);font-weight:600;}
.empty-state{
  background:#fff;
  border:1px dashed #C9DAFF;
  border-radius:var(--radius-card);
  padding:56px 28px;
  text-align:center;
}
.empty-state i{font-size:38px;color:#B7C9E4;margin-bottom:16px;}
.empty-state h3{font-size:19px;margin-bottom:10px;}
.empty-state p{color:var(--muted);margin-bottom:22px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:box-shadow .25s ease;
}
.faq-item:hover{box-shadow:var(--shadow-hover);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  border-left:4px solid var(--blue);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  color:var(--blue);
  background:var(--blue-soft);
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  flex:0 0 28px;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"\f068";transform:rotate(180deg);}
.faq-item[open] summary{background:#F7FAFF;}
.faq-answer{padding:0 24px 22px 28px;color:var(--muted);font-size:15px;}

/* ---------- bottom cta ---------- */
.cta-strip{
  background:#fff;
  border:1px solid var(--border);
  border-radius:26px;
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--shadow);
}
.cta-strip h2{font-size:26px;margin-bottom:10px;}
.cta-strip p{color:var(--muted);margin:0;}
.cta-strip .actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:#0B1B33;
  color:rgba(255,255,255,.72);
  padding:68px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{color:#fff;margin-bottom:18px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:320px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-col ul li a:hover{color:#fff;}
.footer-col .info-line{font-size:14px;color:rgba(255,255,255,.68);margin-bottom:12px;display:flex;gap:10px;align-items:flex-start;}
.footer-col .info-line i{color:#5E8DFF;margin-top:5px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-links a{color:rgba(255,255,255,.6);margin-right:18px;}
.footer-links a:hover{color:#fff;}

/* ---------- sticky mobile download bar ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:130;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-top:1px solid var(--border);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 20px rgba(15,42,80,.08);
}
.mobile-bar .bar-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.mobile-bar .bar-text{font-size:13px;color:var(--muted);line-height:1.5;}
.mobile-bar .bar-text strong{display:block;font-size:14px;color:var(--text);}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .hero h1{font-size:38px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:auto;}
  .hero-copy{max-width:100%;}
  .device-frame img{height:420px;}
  .device-tag.tag-a{left:0;top:30px;}
  .device-tag.tag-b{right:0;bottom:40px;}
  .value-grid{grid-template-columns:1fr;}
  .spec-row{grid-template-columns:1fr;gap:8px;padding:20px 22px;}
  .review-grid{grid-template-columns:1fr 1fr;}
  .review-card:nth-child(2){margin-top:0;}
  .review-card:nth-child(3){margin-top:0;grid-column:span 2;}
  .download-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:36px 32px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-right .btn{display:none;}
}
@media screen and (max-width:767px){
  .section{padding:56px 0;}
  .container{padding:0 18px;}
  .hero{padding:44px 0 56px;}
  .hero h1{font-size:31px;}
  .hero-sub{font-size:16px;}
  .section-head h2{font-size:25px;}
  .section-head{margin-bottom:32px;}
  .card-feature,.card{padding:22px;}
  .download-panel{padding:32px 22px;}
  .download-panel h2{font-size:24px;}
  .news-grid{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .review-card:nth-child(3){grid-column:auto;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .shot-item{flex:0 0 82%;}
  .shot-item img{height:380px;}
  .cta-strip{padding:28px 22px;}
  .cta-strip h2{font-size:22px;}
  .mobile-bar{display:block;}
  .site-footer{padding-bottom:76px;}
  .logo{font-size:15px;}
  .logo-mark{width:34px;height:34px;flex:0 0 34px;font-size:15px;}
  .faq-item summary{padding:18px 18px;font-size:15px;}
  .faq-answer{padding:0 18px 18px 22px;}
}
@media screen and (max-width:480px){
  .hero-actions .btn{width:100%;}
  .cta-strip .actions{width:100%;}
  .cta-strip .actions .btn{width:100%;}
  .download-actions .btn{width:100%;}
  .device-frame{width:100%;max-width:290px;}
}

/* roulang page: article */
:root{
  --brand:#1F5EFF;
  --brand-deep:#1a4fd6;
  --brand-soft:#EAF0FF;
  --teal:#17B3A3;
  --accent:#FF7A3D;
  --accent-deep:#ef6520;
  --bg:#F7FAFF;
  --card:#FFFFFF;
  --ink:#0B1B33;
  --muted:#5B6B84;
  --line:#E3ECF7;
  --ok:#16A34A;
  --warn:#F59E0B;
  --err:#DC2626;
  --r-btn:12px;
  --r-card:18px;
  --r-img:16px;
  --sh-card:0 10px 30px rgba(15,42,80,.08);
  --sh-hover:0 16px 40px rgba(15,42,80,.14);
  --sh-nav:0 6px 20px rgba(15,42,80,.06);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:rgba(31,94,255,.18);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-weight:600;font-size:15px;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:3px solid rgba(31,94,255,.25);outline-offset:2px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(31,94,255,.24);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 14px 30px rgba(31,94,255,.32);color:#fff;}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;color:var(--brand);border-color:#c8d8ff;}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-2px);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,61,.26);}
.btn-accent:hover{background:var(--accent-deep);transform:translateY(-2px);color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-nav);}
.header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--teal));
  color:#fff;font-size:17px;box-shadow:0 6px 16px rgba(31,94,255,.28);
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--ink);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--muted);transition:background-color .2s,color .2s;
}
.nav-links a:hover{background:#F1F6FF;color:var(--brand);}
.nav-links a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:18px;cursor:pointer;
}
.nav-toggle:hover{background:var(--brand-soft);color:var(--brand);}

/* ===== 移动端抽屉 ===== */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,27,51,.42);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);
  background:#fff;z-index:80;padding:24px 22px;
  transform:translateX(105%);transition:transform .3s ease;
  display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--muted);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  display:block;padding:12px 14px;border-radius:12px;font-size:15px;font-weight:500;color:var(--muted);
}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.drawer-note{font-size:13px;color:var(--muted);line-height:1.7;}

/* ===== 面包屑 ===== */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:14px 0;font-size:14px;color:var(--muted);
}
.breadcrumb a{color:var(--muted);transition:color .2s;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#B9C7DB;}
.breadcrumb .current{color:var(--ink);font-weight:500;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ===== 文章布局 ===== */
.article-section{padding:40px 0 72px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start;
}
.article-main{min-width:0;}

.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:32px 34px 36px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;
}
.article-title{
  font-size:34px;line-height:1.4;font-weight:700;letter-spacing:.2px;margin:16px 0 14px;
  overflow-wrap:break-word;
}
.article-lead{
  font-size:16px;line-height:1.9;color:var(--muted);margin-bottom:20px;
  padding-left:14px;border-left:3px solid var(--brand-soft);
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:18px;
  padding-top:16px;border-top:1px dashed var(--line);
  font-size:14px;color:var(--muted);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{color:var(--brand);}
.article-cover{
  margin:24px 0 0;border-radius:var(--r-img);overflow:hidden;
  background:linear-gradient(135deg,#E7F0FF,#E4F7F4);
}
.article-cover img{width:100%;height:300px;object-fit:cover;}

.article-body{
  margin-top:32px;font-size:16px;line-height:1.9;color:var(--ink);overflow-wrap:break-word;
}
.article-body p{margin:0 0 20px;}
.article-body h2{
  font-size:25px;font-weight:700;line-height:1.4;margin:38px 0 16px;
  padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{font-size:19px;font-weight:700;margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
.article-body ul li{list-style:disc;margin-bottom:8px;}
.article-body ol li{list-style:decimal;margin-bottom:8px;}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--bg);
  border-left:4px solid var(--teal);border-radius:0 12px 12px 0;color:var(--muted);
}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:#F2F7FF;font-weight:600;}
.article-body img{border-radius:var(--r-img);object-fit:cover;margin:22px auto;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body strong{font-weight:700;}
.article-body hr{border:none;border-top:1px dashed var(--line);margin:28px 0;}

.empty-state{
  text-align:center;padding:56px 20px;color:var(--muted);
}
.empty-state i{font-size:40px;color:#C8D8FF;margin-bottom:14px;display:block;}
.empty-state h2{font-size:22px;color:var(--ink);margin-bottom:10px;}
.empty-state p{margin-bottom:22px;font-size:15px;}

/* ===== 侧栏 ===== */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:22px;
}
.side-card h3{
  font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-card h3 i{color:var(--brand);}
.toc{margin:0;padding:0;list-style:none;}
.toc a{
  display:block;padding:8px 12px;border-radius:10px;font-size:14px;color:var(--muted);
  border-left:2px solid transparent;transition:all .2s;line-height:1.6;
}
.toc a:hover{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);}
.toc-empty{font-size:14px;color:var(--muted);line-height:1.8;}
.side-links{display:flex;flex-direction:column;gap:10px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:12px;background:var(--bg);
  font-size:14px;color:var(--ink);transition:background-color .2s,color .2s,transform .2s;
}
.side-links a:hover{background:var(--brand-soft);color:var(--brand);transform:translateX(3px);}
.side-links a i{color:var(--brand);font-size:12px;}

/* ===== 文末推荐 ===== */
.after-section{padding:0 0 72px;}
.block-head{margin-bottom:26px;}
.block-head h2{font-size:28px;font-weight:700;line-height:1.4;}
.block-head p{margin-top:8px;color:var(--muted);font-size:15px;}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.rec-card img{width:100%;height:172px;object-fit:cover;}
.rec-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{font-size:17px;font-weight:700;line-height:1.55;}
.rec-body p{font-size:14px;color:var(--muted);line-height:1.8;flex:1;}
.rec-link{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}

/* ===== 下载 CTA ===== */
.download-cta{padding:0 0 80px;}
.download-card{
  position:relative;overflow:hidden;border-radius:24px;
  background:linear-gradient(120deg,#1F5EFF 0%,#1a86e8 55%,#17B3A3 100%);
  color:#fff;padding:44px 44px 40px;
  box-shadow:0 20px 50px rgba(31,94,255,.24);
}
.download-card::after{
  content:"";position:absolute;right:-70px;top:-70px;width:280px;height:280px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.download-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:32px;align-items:center;}
.download-card h2{font-size:28px;font-weight:700;line-height:1.4;color:#fff;margin-bottom:12px;}
.download-card p{font-size:15px;line-height:1.9;color:rgba(255,255,255,.9);max-width:52ch;}
.download-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.download-meta{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  border-radius:16px;padding:18px;
}
.download-meta .meta-item span{display:block;font-size:12px;color:rgba(255,255,255,.78);}
.download-meta .meta-item strong{font-size:15px;font-weight:700;color:#fff;}

/* ===== 页脚 ===== */
.site-footer{background:#0B1B33;color:#C7D3E6;padding:64px 0 26px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:36px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.9;color:#9FB0C9;max-width:38ch;}
.footer-col h4{font-size:16px;color:#fff;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:#9FB0C9;transition:color .2s,padding-left .2s;}
.footer-col ul a:hover{color:#fff;padding-left:4px;}
.info-line{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:#9FB0C9;margin-bottom:10px;line-height:1.7;}
.info-line i{color:#5AA0FF;margin-top:4px;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#8A9BB4;
}
.footer-links{display:flex;gap:16px;}
.footer-links a{color:#9FB0C9;}
.footer-links a:hover{color:#fff;}

/* ===== 返回顶部 ===== */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;
  background:#fff;border:1px solid var(--line);color:var(--brand);
  box-shadow:var(--sh-card);cursor:pointer;display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;z-index:55;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand);color:#fff;}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .download-inner{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  .article-section{padding:26px 0 48px;}
  .article-card{padding:24px 20px 28px;border-radius:16px;}
  .article-title{font-size:26px;}
  .article-cover img{height:196px;}
  .article-body h2{font-size:21px;margin-top:30px;}
  .article-body h3{font-size:17px;}
  .block-head h2{font-size:23px;}
  .download-card{padding:30px 22px;}
  .download-card h2{font-size:22px;}
  .rec-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .site-footer{padding:48px 0 22px;}
  .logo-text{font-size:15px;}
  .header-actions .btn-sm span{display:none;}
  .breadcrumb .current{max-width:100%;white-space:normal;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .article-title{font-size:23px;}
  .article-meta{gap:12px;font-size:13px;}
  .download-actions .btn{width:100%;}
  .download-meta{grid-template-columns:minmax(0,1fr);}
  .to-top{right:14px;bottom:16px;}
}

/* roulang page: category1 */
:root{
  --brand:#1F5EFF;
  --brand-dark:#1748C9;
  --brand-soft:#EAF1FF;
  --teal:#17B3A3;
  --teal-soft:#E6F7F5;
  --orange:#FF7A3D;
  --orange-dark:#F0631F;
  --bg:#F7FAFF;
  --card:#FFFFFF;
  --text:#0B1B33;
  --muted:#5B6B84;
  --border:#E3ECF7;
  --success:#16A34A;
  --warning:#F59E0B;
  --error:#DC2626;
  --radius-s:12px;
  --radius-m:16px;
  --radius-l:20px;
  --shadow-s:0 10px 30px rgba(15,42,80,.08);
  --shadow-h:0 16px 40px rgba(15,42,80,.14);
  --shadow-nav:0 6px 20px rgba(15,42,80,.06);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button,input,textarea,select{font-family:inherit;font-size: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;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.num{font-family:"DIN Alternate","Inter",Arial,sans-serif;font-weight:700;letter-spacing:.5px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-nav);}
.nav-wrap{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--text);}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#3E7BFF);
  color:#fff;font-size:16px;box-shadow:0 6px 16px rgba(31,94,255,.28);
}
.logo-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  display:inline-block;padding:9px 16px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--muted);
}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft);}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);font-weight:600;}
.nav-cta{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);
  background:#fff;color:var(--text);font-size:17px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.mobile-panel{
  display:none;border-top:1px solid var(--border);background:#fff;padding:12px 0 18px;
}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;font-size:16px;color:var(--muted);border-radius:0;
}
.mobile-panel a.active{color:var(--brand);background:var(--brand-soft);font-weight:600;}
.mobile-panel .mobile-dl{margin:10px 24px 0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-s);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,94,255,.25);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(31,94,255,.24);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 28px rgba(31,94,255,.3);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C6D9FF;}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 8px 22px rgba(255,122,61,.28);}
.btn-orange:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,122,61,.34);}
.btn-orange:active{transform:translateY(0);}
.btn-lg{min-height:54px;padding:0 30px;font-size:17px;border-radius:14px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);
}
.badge-teal{background:var(--teal-soft);color:#0E8C80;}
.badge-orange{background:#FFF1E9;color:var(--orange-dark);}
.badge-green{background:#E9F9EF;color:var(--success);}
.dot{width:8px;height:8px;border-radius:50%;background:var(--success);display:inline-block;box-shadow:0 0 0 4px rgba(22,163,74,.15);}
.dot.warn{background:var(--warning);box-shadow:0 0 0 4px rgba(245,158,11,.16);}

/* ============ 通用板块 ============ */
.section{padding:84px 0;}
.section-sm{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:42px;}
.section-head h2{font-size:30px;margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-block;margin-bottom:14px;padding:5px 13px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.4px;
}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-l);
  box-shadow:var(--shadow-s);padding:26px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:#D3E2FB;}
.card h3{font-size:20px;margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(105deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.90) 46%,rgba(247,250,255,.72) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.hero-inner{
  display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;
  padding:66px 0 70px;
}
.hero h1{font-size:42px;line-height:1.28;margin:16px 0 18px;}
.hero h1 span{color:var(--brand);}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.status-strip{
  display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:12px 22px;box-shadow:var(--shadow-s);font-size:14px;color:var(--muted);
}
.status-strip strong{color:var(--text);font-weight:700;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;height:340px;object-fit:cover;border-radius:var(--radius-l);
  box-shadow:0 24px 50px rgba(15,42,80,.16);
}
.hero-float{
  position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-m);padding:14px 18px;box-shadow:var(--shadow-h);min-width:186px;
}
.hero-float .k{font-size:13px;color:var(--muted);}
.hero-float .v{font-size:22px;color:var(--brand);}
.hero-float .v em{font-size:13px;font-style:normal;color:var(--muted);font-weight:500;}

/* ============ 入口状态卡 ============ */
.status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.status-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-m);
  padding:22px;box-shadow:var(--shadow-s);transition:transform .25s ease,box-shadow .25s ease;
}
.status-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);}
.status-card .label{font-size:13px;color:var(--muted);margin-bottom:8px;display:flex;align-items:center;gap:6px;}
.status-card .value{font-size:24px;color:var(--text);}
.status-card .value em{font-size:13px;font-style:normal;color:var(--muted);font-weight:500;margin-left:4px;}
.status-card .tip{margin-top:8px;font-size:13px;color:var(--muted);}
.line-box{
  margin-top:24px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-l);
  box-shadow:var(--shadow-s);padding:0;overflow:hidden;
}
.line-box h3{font-size:18px;padding:22px 26px 0;}
.line-row{
  display:grid;grid-template-columns:1.4fr .8fr .8fr .8fr auto;gap:12px;align-items:center;
  padding:16px 26px;border-top:1px solid var(--border);font-size:15px;
}
.line-row:first-of-type{border-top:1px solid var(--border);margin-top:16px;}
.line-row .name{font-weight:600;display:flex;align-items:center;gap:8px;}
.line-row .meta{color:var(--muted);font-size:14px;}
.line-row .go{justify-self:end;}
.line-row .go a{color:var(--brand);font-weight:600;font-size:14px;}
.line-row .go a:hover{text-decoration:underline;}

/* ============ 时间线 ============ */
.timeline{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:26px;padding-top:16px;}
.timeline::before{
  content:"";position:absolute;top:44px;left:8%;right:8%;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--teal));opacity:.35;
}
.step{position:relative;text-align:center;padding:0 8px;}
.step-num{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;
  display:grid;place-items:center;font-size:20px;color:#fff;
  background:linear-gradient(135deg,var(--brand),#4A83FF);
  box-shadow:0 10px 24px rgba(31,94,255,.3);position:relative;z-index:1;
}
.step:nth-child(2) .step-num{background:linear-gradient(135deg,var(--teal),#3FD3C4);box-shadow:0 10px 24px rgba(23,179,163,.3);}
.step:nth-child(3) .step-num{background:linear-gradient(135deg,var(--orange),#FF9C6B);box-shadow:0 10px 24px rgba(255,122,61,.3);}
.step h3{font-size:19px;margin-bottom:10px;}
.step p{color:var(--muted);font-size:15px;max-width:300px;margin:0 auto;}

/* ============ 下载 CTA ============ */
.download-band{
  background:linear-gradient(120deg,#0B1B33 0%,#16305C 55%,#1F5EFF 160%);
  border-radius:24px;color:#fff;padding:44px;position:relative;overflow:hidden;
}
.download-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,94,255,.55),transparent 65%);
}
.download-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center;position:relative;z-index:1;}
.download-band h2{font-size:28px;color:#fff;margin-bottom:12px;}
.download-band p{color:rgba(255,255,255,.78);font-size:15px;max-width:560px;}
.dl-meta{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 24px;}
.dl-meta span{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
  border-radius:999px;padding:6px 14px;font-size:13px;color:rgba(255,255,255,.9);
}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;}
.qr-card{
  background:#fff;border-radius:var(--radius-l);padding:22px;text-align:center;color:var(--text);
  box-shadow:0 20px 44px rgba(0,0,0,.22);
}
.qr-card .qr{
  width:132px;height:132px;margin:0 auto 14px;border-radius:14px;
  background:
    linear-gradient(135deg,var(--brand-soft),#fff),
    repeating-linear-gradient(0deg,#0B1B33 0 6px,transparent 6px 12px);
  border:1px solid var(--border);display:grid;place-items:center;color:var(--brand);font-size:34px;
}
.qr-card strong{display:block;font-size:15px;}
.qr-card span{font-size:13px;color:var(--muted);}
.safe-note{display:flex;align-items:center;gap:8px;margin-top:14px;font-size:13px;color:rgba(255,255,255,.75);}

/* ============ 安全提示 ============ */
.safety-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.safety-item{display:flex;gap:16px;align-items:flex-start;}
.safety-icon{
  flex:0 0 46px;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:18px;
}
.safety-item:nth-child(2) .safety-icon{background:var(--teal-soft);color:#0E8C80;}
.safety-item:nth-child(3) .safety-icon{background:#FFF1E9;color:var(--orange-dark);}
.safety-item:nth-child(4) .safety-icon{background:#E9F9EF;color:var(--success);}
.safety-item h3{font-size:18px;margin-bottom:6px;}
.safety-item p{color:var(--muted);font-size:15px;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-m);
  box-shadow:var(--shadow-s);overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px 20px 22px;font-size:17px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-left:4px solid var(--brand);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .ic{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:13px;transition:transform .25s ease;
}
.faq-item[open] summary{background:var(--bg);}
.faq-item[open] summary .ic{transform:rotate(45deg);}
.faq-body{padding:4px 24px 22px 22px;color:var(--muted);font-size:15px;}

/* ============ 结尾 CTA ============ */
.end-cta{
  background:#fff;border:1px solid var(--border);border-radius:24px;padding:44px;
  text-align:center;box-shadow:var(--shadow-s);
}
.end-cta h2{font-size:28px;margin-bottom:14px;}
.end-cta p{color:var(--muted);max-width:640px;margin:0 auto 26px;}
.end-cta .hero-cta{justify-content:center;}

/* ============ 页脚 ============ */
.site-footer{background:#0B1B33;color:rgba(255,255,255,.82);padding:66px 0 26px;margin-top:80px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.12);}
.site-footer .logo{color:#fff;margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:360px;}
.footer-col h4{font-size:16px;color:#fff;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col ul a:hover{color:#fff;}
.info-line{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.7);margin-bottom:12px;line-height:1.7;}
.info-line i{color:#6E9BFF;margin-top:5px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.55);
}
.footer-links{display:flex;gap:18px;}
.footer-links a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .nav-links{display:none;}
  .nav-cta .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-inner{grid-template-columns:1fr;gap:34px;padding:48px 0 56px;}
  .hero h1{font-size:34px;}
  .hero-visual img{height:290px;}
  .status-grid{grid-template-columns:repeat(2,1fr);}
  .download-grid{grid-template-columns:1fr;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:62px 0;}
}
@media screen and (max-width:767px){
  .timeline{grid-template-columns:1fr;gap:30px;}
  .timeline::before{display:none;}
  .step{text-align:left;display:flex;gap:16px;padding:0;}
  .step-num{margin:0;flex:0 0 48px;width:48px;height:48px;font-size:18px;}
  .step p{margin:0;max-width:none;}
  .safety-grid{grid-template-columns:1fr;}
  .line-row{grid-template-columns:1fr auto;grid-template-areas:"name go" "meta meta";row-gap:6px;}
  .line-row .name{grid-area:name;}
  .line-row .go{grid-area:go;align-self:start;}
  .line-row .meta{grid-area:meta;}
  .line-row .meta.hide-sm{display:none;}
  .download-band{padding:30px 22px;border-radius:20px;}
  .end-cta{padding:32px 22px;border-radius:20px;}
  .section-head h2{font-size:25px;}
}
@media screen and (max-width:520px){
  .container{padding:0 18px;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;}
  .status-grid{grid-template-columns:1fr;}
  .status-strip{border-radius:18px;padding:12px 16px;gap:8px 16px;font-size:13px;}
  .hero-visual img{height:220px;}
  .hero-float{left:12px;bottom:14px;}
  .card{padding:22px;}
  .btn-lg{min-height:50px;font-size:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section{padding:50px 0;}
}

/* roulang page: category3 */
:root{
  --brand:#1F5EFF;
  --brand-deep:#1546C4;
  --brand-soft:#EAF1FF;
  --teal:#17B3A3;
  --teal-soft:#E6F7F5;
  --orange:#FF7A3D;
  --orange-deep:#F1641F;
  --bg:#F7FAFF;
  --card:#FFFFFF;
  --ink:#0B1B33;
  --ink-2:#5B6B84;
  --line:#E3ECF7;
  --ok:#16A34A;
  --warn:#F59E0B;
  --err:#DC2626;
  --r-btn:12px;
  --r-card:18px;
  --r-img:16px;
  --sh-card:0 10px 30px rgba(15,42,80,.08);
  --sh-hover:0 16px 40px rgba(15,42,80,.14);
  --sh-nav:0 6px 20px rgba(15,42,80,.06);
  --sp-sec:88px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Inter",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  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(--r-img);object-fit:cover;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-deep);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:3px solid rgba(31,94,255,.25);outline-offset:2px;border-radius:8px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.sec{padding:var(--sp-sec) 0;}
.sec-sm{padding:56px 0;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-head h2{font-size:30px;letter-spacing:-.2px;}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow i{font-size:12px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-nav);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  background:linear-gradient(135deg,var(--brand),#4F86FF);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 6px 16px rgba(31,94,255,.28);
}
.logo-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  display:inline-flex;align-items:center;height:40px;padding:0 16px;border-radius:999px;
  font-size:15.5px;font-weight:500;color:var(--ink-2);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand);}
.nav-links a.active{background:var(--brand);color:#fff;font-weight:600;box-shadow:0 8px 18px rgba(31,94,255,.24);}
.header-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;color:var(--ink);font-size:18px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,27,51,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:80;
}
.m-drawer{
  position:fixed;top:0;right:0;height:100%;width:82%;max-width:340px;background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .3s ease;padding:22px 20px;overflow-y:auto;
  box-shadow:-12px 0 40px rgba(15,42,80,.18);
}
body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
body.drawer-open .m-drawer{transform:translateX(0);}
.m-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.m-drawer-head .logo-text{font-size:16px;}
.m-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink-2);}
.m-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.m-nav a{
  display:flex;align-items:center;justify-content:space-between;height:48px;padding:0 16px;
  border-radius:12px;color:var(--ink);font-size:16px;background:#F5F8FE;
}
.m-nav a.active{background:var(--brand);color:#fff;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{min-height:40px;padding:0 18px;font-size:15px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px rgba(31,94,255,.24);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(31,94,255,.3);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C6D8FF;}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px);}
.btn-download{background:var(--orange);color:#fff;box-shadow:0 10px 22px rgba(255,122,61,.28);}
.btn-download:hover{background:var(--orange-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,122,61,.34);}
.btn-block{width:100%;}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;padding:74px 0 68px;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.92) 42%,rgba(247,250,255,.72) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero h1{font-size:44px;letter-spacing:-.6px;max-width:820px;}
.page-hero h1 span{color:var(--brand);}
.page-hero .lead{margin-top:18px;max-width:720px;color:var(--ink-2);font-size:17px;}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-badges{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px;}
.badge{
  display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--ink-2);
  box-shadow:0 4px 12px rgba(15,42,80,.05);
}
.badge i{color:var(--brand);font-size:12px;}
.badge.ok i{color:var(--ok);}
.crumb{font-size:14px;color:var(--ink-2);margin-bottom:20px;}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand);}
.crumb span{margin:0 7px;color:#A9B7CB;}

/* ---------- 杂志式双栏 ---------- */
.mag-grid{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(0,1fr);gap:28px;align-items:start;}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);transition:transform .22s ease,box-shadow .22s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.feature-cover{position:relative;height:300px;}
.feature-cover img{width:100%;height:100%;border-radius:0;}
.feature-cover .tag-float{
  position:absolute;left:20px;top:20px;background:rgba(255,255,255,.95);
  color:var(--brand);font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
}
.feature-body{padding:26px 28px 28px;}
.feature-body h3{font-size:24px;}
.feature-body p{margin-top:14px;color:var(--ink-2);font-size:15.5px;}
.meta-row{margin-top:18px;display:flex;flex-wrap:wrap;gap:18px;font-size:13.5px;color:var(--ink-2);}
.meta-row i{color:var(--brand);margin-right:6px;}
.feature-link{display:inline-flex;align-items:center;gap:8px;margin-top:20px;font-weight:600;font-size:15px;}

.side-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:24px;
}
.side-panel h3{font-size:18px;display:flex;align-items:center;gap:9px;margin-bottom:18px;}
.side-panel h3 i{color:var(--brand);font-size:16px;}
.side-list{display:flex;flex-direction:column;gap:16px;}
.side-item{display:flex;gap:14px;padding-bottom:16px;border-bottom:1px dashed var(--line);}
.side-item:last-child{border-bottom:0;padding-bottom:0;}
.side-item img{width:74px;height:60px;flex:0 0 74px;border-radius:12px;}
.side-item h4{font-size:15px;font-weight:600;line-height:1.55;}
.side-item h4 a{color:var(--ink);}
.side-item h4 a:hover{color:var(--brand);}
.side-item .side-meta{margin-top:8px;font-size:13px;color:var(--ink-2);}
.side-item .side-meta i{margin-right:5px;color:var(--brand);}

/* ---------- 主题方向卡（Foundation 栅格） ---------- */
.topic-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;height:100%;box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.topic-card:hover{transform:translateY(-5px);box-shadow:var(--sh-hover);border-color:#CFE0FF;}
.topic-icon{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:20px;margin-bottom:18px;
}
.topic-icon.blue{background:var(--brand-soft);color:var(--brand);}
.topic-icon.teal{background:var(--teal-soft);color:var(--teal);}
.topic-icon.orange{background:#FFEFE7;color:var(--orange);}
.topic-card h3{font-size:20px;}
.topic-card p{margin-top:12px;color:var(--ink-2);font-size:15px;}
.topic-list{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
.topic-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-2);}
.topic-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--brand);opacity:.7;
}

/* ---------- 标签 ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 18px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:14.5px;color:var(--ink-2);transition:all .2s ease;
}
.tag-pill:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);transform:translateY(-2px);}
.tag-pill i{font-size:12px;color:var(--brand);}

/* ---------- 左文右图 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;}
.split h2{font-size:30px;}
.split p{margin-top:16px;color:var(--ink-2);}
.split .figure{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);}
.split .figure img{width:100%;height:340px;border-radius:0;}
.ticks{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.ticks li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);}
.ticks i{color:var(--ok);margin-top:5px;}

/* ---------- 下载 CTA ---------- */
.dl-band{
  position:relative;border-radius:24px;overflow:hidden;
  background:linear-gradient(120deg,#0F2E6E 0%,#1F5EFF 62%,#2F7BFF 100%);
  color:#fff;padding:52px 48px;
  box-shadow:0 24px 50px rgba(15,42,80,.22);
}
.dl-band::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),rgba(255,255,255,0) 68%);
}
.dl-band h2{color:#fff;font-size:30px;}
.dl-band p{margin-top:14px;color:rgba(255,255,255,.86);max-width:640px;}
.dl-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:#EAF1FF;color:var(--brand-deep);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px);}
.dl-facts{margin-top:26px;display:flex;flex-wrap:wrap;gap:22px;font-size:14px;color:rgba(255,255,255,.9);position:relative;z-index:1;}
.dl-facts span{display:inline-flex;align-items:center;gap:8px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;
  overflow:hidden;transition:box-shadow .2s ease;
}
.faq-item[open]{box-shadow:var(--sh-card);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px 20px 26px;font-size:16.5px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:0 4px 4px 0;background:var(--brand);
}
.faq-item summary i{color:var(--brand);transition:transform .25s ease;font-size:15px;}
.faq-item[open] summary i{transform:rotate(45deg);}
.faq-body{padding:0 24px 22px 26px;color:var(--ink-2);font-size:15.5px;border-top:1px solid var(--line);padding-top:18px;}
.faq-item[open] .faq-body{background:#F7FAFF;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B1B33;color:#fff;padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .logo-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,#2F7BFF,#17B3A3);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;}
.footer-brand .logo-text{font-size:17px;font-weight:700;color:#fff;}
.footer-brand p{color:rgba(255,255,255,.7);font-size:14.5px;line-height:1.85;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{color:rgba(255,255,255,.72);font-size:14.5px;}
.footer-col ul a:hover{color:#fff;}
.info-line{display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.72);font-size:14.5px;margin-bottom:12px;}
.info-line i{color:#4F9BFF;margin-top:5px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  color:rgba(255,255,255,.6);font-size:14px;
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-links a{color:rgba(255,255,255,.68);}
.footer-links a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  :root{--sp-sec:64px;}
  .nav-links,.header-cta .btn{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .page-hero h1{font-size:34px;}
  .mag-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split .figure img{height:280px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:767px){
  :root{--sp-sec:52px;}
  .sec{padding:var(--sp-sec) 0;}
  .page-hero{padding:52px 0 48px;}
  .page-hero h1{font-size:30px;letter-spacing:-.2px;}
  .page-hero .lead{font-size:15.5px;}
  .sec-head h2,.split h2,.dl-band h2{font-size:24px;}
  .feature-cover{height:210px;}
  .feature-body{padding:22px;}
  .feature-body h3{font-size:20px;}
  .dl-band{padding:34px 22px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:519px){
  .container{padding:0 16px;}
  .hero-actions .btn{width:100%;}
  .btn{padding:0 18px;}
  .topic-card{padding:22px;}
  .logo-text{font-size:15.5px;}
}

/* roulang page: category2 */
:root{
  --brand:#1F5EFF;
  --brand-dark:#1a4fd8;
  --brand-soft:#EAF1FF;
  --teal:#17B3A3;
  --teal-soft:#E4F7F4;
  --accent:#FF7A3D;
  --accent-dark:#ef672a;
  --accent-soft:#FFF1E9;
  --bg:#F7FAFF;
  --card:#FFFFFF;
  --text:#0B1B33;
  --muted:#5B6B84;
  --border:#E3ECF7;
  --success:#16A34A;
  --success-soft:#E8F8EE;
  --warning:#F59E0B;
  --warning-soft:#FFF6E5;
  --danger:#DC2626;
  --radius-btn:12px;
  --radius-card:18px;
  --radius-img:16px;
  --radius-pill:999px;
  --shadow:0 10px 30px rgba(15,42,80,.08);
  --shadow-hover:0 16px 40px rgba(15,42,80,.14);
  --shadow-nav:0 6px 20px rgba(15,42,80,.06);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.35;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
img{max-width:100%;display:block;object-fit:cover;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:3px solid rgba(31,94,255,.25);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:#FFFFFF;}
.section-head{max-width:760px;margin-bottom:44px;}
.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:.08em;
  color:var(--brand);background:var(--brand-soft);
  padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:16px;
}
.section-head h2{font-size:30px;margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}
.text-muted{color:var(--muted);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn i{font-size:15px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(31,94,255,.24);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(31,94,255,.3);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(31,94,255,.24);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,61,.28);}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,122,61,.34);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9DBFF;}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-2px);}
.btn-sm{min-height:42px;padding:0 18px;font-size:15px;}
.btn-block{width:100%;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;padding:5px 12px;border-radius:var(--radius-pill);
  background:var(--brand-soft);color:var(--brand);
}
.badge-teal{background:var(--teal-soft);color:#0E8F83;}
.badge-accent{background:var(--accent-soft);color:var(--accent-dark);}
.badge-success{background:var(--success-soft);color:var(--success);}
.badge-warning{background:var(--warning-soft);color:#B4740A;}
.badge-line{background:#fff;color:var(--muted);border:1px solid var(--border);}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:26px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D4E3FA;}
.card h3{font-size:20px;margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-nav);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;}
.logo:hover{color:var(--text);}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  background:linear-gradient(135deg,var(--brand),#4C82FF);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;box-shadow:0 6px 16px rgba(31,94,255,.28);
}
.logo-text{font-size:18px;letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  display:inline-flex;align-items:center;height:40px;padding:0 15px;border-radius:var(--radius-pill);
  font-size:15.5px;font-weight:500;color:#2B3D59;
  transition:background-color .2s ease,color .2s ease;
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand);}
.nav-links a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);font-size:18px;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{background:#DCE8FF;}
.mobile-menu{
  display:none;border-top:1px solid var(--border);background:#fff;
  padding:12px 20px 20px;
}
.mobile-menu.open{display:block;}
.mobile-menu a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 12px;border-radius:12px;color:#2B3D59;font-size:16px;font-weight:500;
}
.mobile-menu a:hover,.mobile-menu a.active{background:var(--brand-soft);color:var(--brand);}
.mobile-menu .btn{margin-top:12px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--border);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:14px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#B9C7DC;}
.crumb .now{color:var(--text);font-weight:600;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background:#fff;
  border-bottom:1px solid var(--border);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  opacity:.14;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,#FFFFFF 8%,rgba(255,255,255,.92) 42%,rgba(255,255,255,.55) 100%);
}
.cat-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:64px 0 72px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.cat-hero h1{font-size:42px;line-height:1.25;letter-spacing:-.01em;margin-bottom:18px;}
.cat-hero h1 span{color:var(--brand);}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:14px;color:var(--muted);}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--teal);}

.dl-panel{
  background:var(--card);border:1px solid var(--border);border-radius:22px;
  box-shadow:var(--shadow-hover);padding:28px;
}
.dl-panel-top{display:flex;align-items:center;gap:16px;padding-bottom:20px;border-bottom:1px solid var(--border);}
.dl-panel-top img{width:72px;height:72px;border-radius:18px;box-shadow:var(--shadow);}
.dl-panel-top h3{font-size:19px;margin-bottom:4px;}
.dl-panel-top p{font-size:13.5px;color:var(--muted);}
.dl-list{margin:20px 0 22px;display:grid;gap:12px;}
.dl-list li{display:flex;align-items:center;justify-content:space-between;font-size:14.5px;color:var(--muted);}
.dl-list li b{color:var(--text);font-weight:600;font-family:"DIN Alternate","Inter",Arial,sans-serif;}
.dl-note{font-size:13px;color:var(--muted);margin-top:14px;display:flex;gap:8px;align-items:flex-start;}
.dl-note i{color:var(--teal);margin-top:4px;}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split.reverse .split-media{order:2;}
.split-media{position:relative;}
.split-media img{
  width:100%;height:340px;border-radius:var(--radius-img);
  box-shadow:var(--shadow-hover);
}
.split-media .float-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(255,255,255,.95);border-radius:14px;padding:12px 16px;
  box-shadow:var(--shadow);font-size:13.5px;color:var(--muted);
  display:flex;align-items:center;gap:10px;
}
.split-media .float-tag b{color:var(--brand);font-size:16px;font-family:"DIN Alternate","Inter",Arial,sans-serif;}
.split-body h2{font-size:28px;margin-bottom:16px;}
.split-body p{color:var(--muted);margin-bottom:18px;}
.check-list{display:grid;gap:12px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:#2B3D59;}
.check-list i{
  color:var(--brand);font-size:14px;width:22px;height:22px;flex:0 0 22px;
  border-radius:50%;background:var(--brand-soft);
  display:inline-flex;align-items:center;justify-content:center;margin-top:4px;
}

/* ---------- 步骤编号卡 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.step-card{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px 24px 26px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.step-no{
  width:44px;height:44px;border-radius:14px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;font-family:"DIN Alternate","Inter",Arial,sans-serif;
  margin-bottom:18px;box-shadow:0 8px 18px rgba(31,94,255,.24);
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:14.5px;color:var(--muted);}
.step-card .step-time{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:13px;color:var(--teal);font-weight:600;
}
.steps-line{height:2px;background:linear-gradient(90deg,var(--brand),rgba(31,94,255,0));border-radius:2px;margin:0 0 30px;}

/* ---------- 系统要求表 ---------- */
.spec-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow);overflow:hidden;}
.spec-row{display:grid;grid-template-columns:200px 1fr;border-bottom:1px solid var(--border);}
.spec-row:last-child{border-bottom:none;}
.spec-key{
  background:#FBFDFF;padding:18px 24px;font-weight:600;font-size:15px;color:var(--text);
  display:flex;align-items:center;gap:10px;
}
.spec-key i{color:var(--brand);}
.spec-val{padding:18px 24px;font-size:15px;color:var(--muted);}
.spec-val b{color:var(--text);}
.spec-foot{
  padding:16px 24px;background:var(--brand-soft);color:#274A96;font-size:14px;
  display:flex;align-items:center;gap:10px;
}

/* ---------- 校验信息 ---------- */
.verify-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.verify-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow);}
.verify-card .v-icon{
  width:44px;height:44px;border-radius:12px;background:var(--teal-soft);color:#0E8F83;
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.verify-card h3{font-size:17px;margin-bottom:8px;}
.verify-card p{font-size:14px;color:var(--muted);}
.code-line{
  margin-top:14px;background:#0B1B33;color:#9FD3FF;border-radius:10px;padding:10px 14px;
  font-family:"DIN Alternate","Inter",Consolas,monospace;font-size:13px;
  word-break:break-all;line-height:1.6;
}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:14px;align-items:flex-start;background:var(--warning-soft);
  border:1px solid #FBE2B6;border-radius:var(--radius-card);padding:20px 24px;
}
.notice i{color:var(--warning);font-size:20px;margin-top:3px;}
.notice h3{font-size:16px;margin-bottom:6px;}
.notice p{font-size:14.5px;color:#8A6212;}

/* ---------- 下载 CTA 区 ---------- */
.dl-cta{
  background:linear-gradient(135deg,#0F3FB8 0%,#1F5EFF 55%,#3C7BFF 100%);
  border-radius:26px;padding:52px 48px;color:#fff;position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;
}
.dl-cta::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),rgba(255,255,255,0) 70%);
}
.dl-cta h2{font-size:30px;color:#fff;margin-bottom:14px;}
.dl-cta p{color:rgba(255,255,255,.86);font-size:16px;margin-bottom:24px;max-width:560px;}
.cta-buttons{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2;}
.cta-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.85);position:relative;z-index:2;}
.qr-box{
  position:relative;z-index:2;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  border-radius:20px;padding:22px;text-align:center;backdrop-filter:blur(4px);
}
.qr-box .qr-img{
  width:150px;height:150px;margin:0 auto 14px;border-radius:14px;background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:56px;
}
.qr-box h4{color:#fff;font-size:16px;margin-bottom:6px;}
.qr-box p{color:rgba(255,255,255,.8);font-size:13px;margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.faq-item[open]{border-color:#CFE0FB;box-shadow:var(--shadow-hover);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";width:4px;height:20px;border-radius:2px;background:var(--brand);flex:0 0 4px;
}
.faq-item summary .faq-icon{
  margin-left:auto;color:var(--brand);font-size:15px;transition:transform .25s ease;
}
.faq-item[open] summary .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 24px 22px 46px;color:var(--muted);font-size:15px;background:#F7FAFF;}
.faq-item[open] .faq-body{padding-top:16px;}
.faq-body p{margin-bottom:10px;}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B1B33;color:#fff;padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand .logo{color:#fff;margin-bottom:18px;}
.footer-brand .logo-mark{background:linear-gradient(135deg,#2E6BFF,#5C93FF);}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{color:rgba(255,255,255,.66);font-size:14.5px;line-height:1.9;max-width:380px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{color:rgba(255,255,255,.7);font-size:14.5px;}
.footer-col ul a:hover{color:#fff;}
.info-line{display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.7);font-size:14.5px;margin-bottom:12px;}
.info-line i{color:#5C93FF;margin-top:5px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding-top:24px;color:rgba(255,255,255,.55);font-size:13.5px;
}
.footer-links{display:flex;gap:18px;}
.footer-links a{color:rgba(255,255,255,.6);}
.footer-links a:hover{color:#fff;}

/* ---------- 移动端吸底下载条 ---------- */
.sticky-dl{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);border-top:1px solid var(--border);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:14px;
  box-shadow:0 -6px 20px rgba(15,42,80,.08);
}
.sticky-dl .sd-info{font-size:12.5px;color:var(--muted);line-height:1.5;}
.sticky-dl .sd-info b{display:block;font-size:14.5px;color:var(--text);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1100px){
  .cat-hero h1{font-size:36px;}
  .hero-grid{gap:36px;padding:52px 0 60px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .verify-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:900px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-primary{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-sub{max-width:100%;}
  .split{grid-template-columns:1fr;gap:34px;}
  .split.reverse .split-media{order:0;}
  .split-media img{height:280px;}
  .dl-cta{grid-template-columns:1fr;padding:40px 28px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:26px;}
  .cat-hero h1{font-size:32px;}
  .sticky-dl{display:flex;}
  body{padding-bottom:76px;}
}
@media screen and (max-width:640px){
  .container{padding:0 16px;}
  .section{padding:52px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:23px;}
  .cat-hero h1{font-size:29px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;}
  .hero-grid{padding:44px 0 52px;}
  .steps{grid-template-columns:1fr;}
  .verify-grid{grid-template-columns:1fr;}
  .spec-row{grid-template-columns:1fr;}
  .spec-key{padding:14px 18px;background:#F4F8FF;}
  .spec-val{padding:14px 18px;}
  .card{padding:22px;}
  .dl-panel{padding:22px;}
  .dl-cta{padding:32px 22px;border-radius:20px;}
  .dl-cta h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
  .faq-item summary{padding:16px 18px;font-size:15.5px;}
  .faq-body{padding-left:22px;padding-right:18px;}
  .split-media img{height:220px;}
  .logo-text{font-size:16px;}
  .cta-buttons .btn{width:100%;}
}

/* roulang page: category4 */
:root{
  --brand:#1F5EFF;
  --brand-dark:#1749CC;
  --brand-soft:#EAF1FF;
  --brand-line:#CFE0FF;
  --teal:#17B3A3;
  --teal-soft:#E6F7F5;
  --accent:#FF7A3D;
  --accent-dark:#F2632A;
  --accent-soft:#FFF0E8;
  --bg:#F7FAFF;
  --card:#FFFFFF;
  --text:#0B1B33;
  --muted:#5B6B84;
  --border:#E3ECF7;
  --success:#16A34A;
  --warn:#F59E0B;
  --danger:#DC2626;
  --radius-sm:12px;
  --radius:16px;
  --radius-lg:20px;
  --pill:999px;
  --shadow-sm:0 6px 18px rgba(15,42,80,.06);
  --shadow:0 10px 30px rgba(15,42,80,.08);
  --shadow-lg:0 16px 40px rgba(15,42,80,.14);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --font-num:"DIN Alternate","Inter",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  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 .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text);letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,94,255,.25);outline-offset:2px;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  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:0 8px 20px rgba(31,94,255,.24);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(31,94,255,.22);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-line);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-2px);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,61,.26);}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-sm{min-height:42px;padding:0 20px;font-size:14px;}
.btn-block{display:flex;width:100%;}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.4);}
.btn-light:hover{background:#fff;color:var(--brand);border-color:#fff;}

/* ---------- 徽章 / 标签 ---------- */
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  border-radius:var(--pill);
  font-size:13px;
  font-weight:600;
  background:var(--brand-soft);
  color:var(--brand);
  line-height:1.6;
}
.pill-accent{background:var(--accent-soft);color:#C9531F;}
.pill-teal{background:var(--teal-soft);color:#0E8578;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(15,42,80,.06);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;}
.logo-mark{
  width:38px;height:38px;
  border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),#4C82FF);
  color:#fff;font-size:17px;
  box-shadow:0 6px 16px rgba(31,94,255,.28);
}
.logo-text{font-size:17px;letter-spacing:.2px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 16px;
  border-radius:var(--pill);
  font-size:15px;
  font-weight:500;
  color:var(--muted);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand);}
.nav-links a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;}
.hamburger{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  font-size:17px;
  cursor:pointer;
}
.hamburger:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line);}

/* ---------- 移动抽屉 ---------- */
.drawer-backdrop{
  position:fixed;inset:0;
  background:rgba(11,27,51,.42);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:1300;
}
.drawer-backdrop.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  width:300px;max-width:86vw;
  height:100%;
  background:#fff;
  z-index:1400;
  transform:translateX(100%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
  box-shadow:-10px 0 30px rgba(15,42,80,.14);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--border);
  background:#fff;color:var(--muted);font-size:16px;cursor:pointer;
}
.drawer-close:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer-nav a{
  display:block;
  padding:12px 16px;
  border-radius:var(--radius-sm);
  color:var(--muted);
  font-size:15px;
  font-weight:500;
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer-note{
  margin-top:18px;
  padding:16px;
  border-radius:var(--radius-sm);
  background:var(--bg);
  border:1px solid var(--border);
  color:var(--muted);
  font-size:13px;
  line-height:1.75;
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);}
.hero-bg{
  position:absolute;inset:0;
  background-position:center;
  background-size:cover;
  background-repeat:no-repeat;
  opacity:.5;
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.9) 48%,rgba(247,250,255,.72) 100%);
}
.hero-inner{position:relative;z-index:2;padding:52px 0 64px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:var(--text);font-weight:600;}
.hero-title{
  font-size:44px;
  max-width:900px;
  margin-bottom:16px;
}
.hero-sub{
  max-width:760px;
  font-size:16px;
  color:var(--muted);
  margin-bottom:28px;
}
.search-box{
  display:flex;
  align-items:center;
  gap:12px;
  max-width:720px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:6px 8px 6px 18px;
  box-shadow:var(--shadow);
  margin-bottom:22px;
}
.search-box i{color:var(--brand);font-size:16px;}
.search-box input{
  flex:1;
  border:0;
  min-height:48px;
  font-size:15px;
  color:var(--text);
  background:transparent;
  outline:none;
  min-width:0;
}
.search-box input::placeholder{color:#9AA9BF;}
.search-box input:focus-visible{outline:none;}
.search-hint{
  font-size:13px;
  color:var(--muted);
  background:var(--bg);
  border:1px solid var(--border);
  padding:6px 12px;
  border-radius:var(--pill);
  white-space:nowrap;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 18px;
  border-radius:var(--pill);
  background:#fff;
  border:1px solid var(--border);
  color:var(--muted);
  font-size:14px;
  font-weight:600;
  box-shadow:var(--shadow-sm);
}
.chip i{color:var(--brand);font-size:13px;}
.chip:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:22px 24px;
  box-shadow:var(--shadow);
}
.stat-item{display:flex;flex-direction:column;gap:4px;}
.stat-value{font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--brand);}
.stat-label{font-size:13px;color:var(--muted);}

/* ---------- 通用板块 ---------- */
.section{padding:84px 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.kicker{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--teal);
  margin-bottom:12px;
}
.section-title{font-size:30px;margin-bottom:14px;}
.section-desc{color:var(--muted);font-size:16px;}

/* ---------- FAQ ---------- */
.faq-columns{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
  align-items:start;
}
.faq-group{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:24px;
  box-shadow:var(--shadow-sm);
  scroll-margin-top:100px;
}
.group-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  margin-bottom:18px;
  padding-bottom:14px;
  border-bottom:1px dashed var(--border);
}
.group-title i{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:14px;
  flex:0 0 auto;
}
.faq-group:nth-child(3) .group-title i{background:var(--teal-soft);color:#0E8578;}
.faq-group:nth-child(4) .group-title i{background:var(--accent-soft);color:#C9531F;}

.faq-item{
  border:1px solid var(--border);
  border-radius:14px;
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.faq-item:last-child{margin-bottom:0;}
.faq-item:hover{border-color:var(--brand-line);}
.faq-item[open]{
  background:#F7FAFF;
  border-color:var(--brand-line);
  box-shadow:0 8px 22px rgba(15,42,80,.07);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
  padding:16px 18px 16px 20px;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  line-height:1.7;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:3px;
  background:var(--brand);
  opacity:0;
  transition:opacity .18s ease;
}
.faq-item[open] summary::before{opacity:1;}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:16px;
  font-weight:700;
  line-height:1;
  margin-top:2px;
}
.faq-item[open] summary::after{content:"−";background:var(--brand);color:#fff;}
.faq-a{padding:0 20px 18px 20px;color:var(--muted);font-size:15px;line-height:1.85;}
.faq-a p{margin:0 0 10px;}
.faq-a p:last-child{margin-bottom:0;}
.faq-a strong{color:var(--text);font-weight:600;}
.faq-empty{
  display:none;
  text-align:center;
  padding:56px 24px;
  background:#fff;
  border:1px dashed var(--brand-line);
  border-radius:var(--radius-lg);
}
.faq-empty i{font-size:30px;color:var(--brand);margin-bottom:14px;display:block;}
.faq-empty h3{font-size:19px;margin-bottom:10px;}
.faq-empty p{color:var(--muted);font-size:15px;margin-bottom:18px;}

/* ---------- 联系表单 ---------- */
.contact-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:28px;
  align-items:start;
}
.form-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:30px;
  box-shadow:var(--shadow);
}
.form-card h3{font-size:22px;margin-bottom:8px;}
.form-card .form-intro{color:var(--muted);font-size:15px;margin-bottom:24px;}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field-full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--text);}
.field label span{color:var(--danger);margin-left:2px;}
.field input,.field select,.field textarea{
  min-height:48px;
  border:1px solid var(--border);
  border-radius:10px;
  padding:0 14px;
  font-size:15px;
  color:var(--text);
  background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
  width:100%;
}
.field textarea{min-height:130px;padding:12px 14px;line-height:1.75;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(31,94,255,.12);
}
.form-actions{display:flex;align-items:center;gap:16px;margin-top:22px;flex-wrap:wrap;}
.form-note{font-size:13px;color:var(--muted);}
.form-tip{
  display:none;
  align-items:center;
  gap:10px;
  margin-top:18px;
  padding:14px 16px;
  border-radius:var(--radius-sm);
  background:#ECFDF3;
  border:1px solid #BBF7D0;
  color:#166534;
  font-size:14px;
}
.form-tip.is-show{display:flex;}

.side-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  margin-bottom:20px;
}
.side-card img{width:100%;height:186px;object-fit:cover;background:linear-gradient(135deg,#EAF1FF,#E6F7F5);}
.side-card .side-body{padding:22px 24px;}
.side-card h4{font-size:17px;margin-bottom:12px;}
.side-list{display:flex;flex-direction:column;gap:12px;}
.side-list li{display:flex;gap:10px;font-size:14px;color:var(--muted);line-height:1.75;}
.side-list i{color:var(--brand);margin-top:5px;font-size:13px;}
.side-list strong{color:var(--text);font-weight:600;}
.safe-note{
  display:flex;gap:12px;
  padding:18px 20px;
  border-radius:var(--radius);
  background:var(--accent-soft);
  border:1px solid #FFD9C5;
  color:#8A3D12;
  font-size:14px;
  line-height:1.8;
}
.safe-note i{color:var(--accent);font-size:16px;margin-top:4px;}

/* ---------- CTA 区 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#123A9E 0%,#1F5EFF 58%,#17B3A3 130%);
  color:#fff;
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--shadow-lg);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:240px;height:240px;
  border-radius:50%;
  background:rgba(255,255,255,.1);
}
.cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-copy h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-copy p{color:rgba(255,255,255,.88);font-size:15px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B1B33;color:#fff;padding:64px 0 0;margin-top:0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:32px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;color:#fff;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{color:rgba(255,255,255,.66);font-size:14px;line-height:1.85;max-width:360px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{color:rgba(255,255,255,.66);font-size:14px;}
.footer-col ul a:hover{color:#fff;}
.info-line{display:flex;gap:10px;color:rgba(255,255,255,.66);font-size:14px;line-height:1.8;margin-bottom:10px;}
.info-line i{color:#4C82FF;margin-top:5px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  color:rgba(255,255,255,.56);
  font-size:13px;
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-links a{color:rgba(255,255,255,.56);}
.footer-links a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .nav-links{display:none;}
  .hamburger{display:inline-flex;align-items:center;justify-content:center;}
  .hero-title{font-size:36px;}
  .section{padding:64px 0;}
  .faq-columns{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
}
@media screen and (max-width:767px){
  .container{padding:0 18px;}
  .header-inner{height:64px;}
  .logo-text{font-size:15px;}
  .header-actions .btn{display:none;}
  .hero-inner{padding:36px 0 48px;}
  .hero-title{font-size:31px;}
  .hero-sub{font-size:15px;}
  .search-box{flex-wrap:wrap;padding:12px 14px;gap:10px;}
  .search-box input{min-height:36px;}
  .search-hint{width:100%;text-align:center;}
  .stat-strip{grid-template-columns:repeat(2,1fr);padding:18px;gap:14px;}
  .section{padding:52px 0;}
  .section-title{font-size:24px;}
  .form-card{padding:22px;}
  .form-grid{grid-template-columns:1fr;}
  .cta-band{padding:34px 24px;}
  .cta-copy h2{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-group{padding:18px;}
  .faq-item summary{font-size:14.5px;padding:14px 14px 14px 16px;}
  .faq-a{padding:0 16px 16px;}
}
@media screen and (max-width:519px){
  .hero-title{font-size:27px;}
  .stat-value{font-size:19px;}
  .btn{width:100%;}
  .chip{width:100%;justify-content:flex-start;}
  .search-box .btn{width:auto;}
}