/* roulang page: index */
:root{
  --primary:#1F6F8B;
  --primary-dark:#155A73;
  --primary-light:#E8F2F5;
  --amber:#E3A13C;
  --amber-dark:#C8851F;
  --amber-light:#FFF4E0;
  --bg:#F7F9FA;
  --card:#FFFFFF;
  --ink:#17252E;
  --ink-2:#5B6B75;
  --line:#DCE6EA;
  --success:#2F9E6B;
  --danger:#D9534F;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 8px 24px rgba(23,37,46,.06);
  --shadow-lg:0 14px 36px rgba(23,37,46,.10);
  --sidebar-w:238px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{font-weight:700;letter-spacing:.2px;color:var(--ink);}
h1{font-size:clamp(28px,3.2vw,42px);line-height:1.28;}
h2{font-size:clamp(24px,2.4vw,31px);line-height:1.35;}
h3{font-size:clamp(18px,1.6vw,21px);line-height:1.5;}
p{color:var(--ink-2);font-size:16px;line-height:1.85;}
.num{font-variant-numeric:tabular-nums;}
::selection{background:var(--primary-light);color:var(--primary-dark);}
:focus-visible{outline:3px solid rgba(31,111,139,.35);outline-offset:2px;border-radius:6px;}

/* ---------- 布局壳层 ---------- */
.app-shell{min-height:100vh;}
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:#fff;border-right:1px solid var(--line);
  padding:22px 16px 26px;display:flex;flex-direction:column;gap:18px;
  z-index:1050;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 6px 14px;border-bottom:1px solid var(--line);}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  background:linear-gradient(140deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;box-shadow:0 6px 14px rgba(31,111,139,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);}
.brand-text span{font-size:12px;color:var(--ink-2);letter-spacing:.5px;}
.nav-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px;}
.nav-list .nav-label{font-size:12px;letter-spacing:1px;color:#9AA8B0;padding:8px 10px 2px;}
.nav-list a{
  display:flex;align-items:center;gap:11px;
  padding:11px 12px;border-radius:11px;color:var(--ink);
  font-size:15px;font-weight:500;position:relative;transition:background .2s ease,color .2s ease;
}
.nav-list a i{width:18px;text-align:center;color:var(--primary);font-size:14px;}
.nav-list a:hover{background:#F1F5F7;color:var(--primary-dark);}
.nav-list a.active{background:var(--primary-light);color:var(--primary-dark);font-weight:600;}
.nav-list a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--amber);
}
.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.sidebar-card{
  background:var(--primary-light);border:1px solid #D3E4EA;border-radius:14px;padding:14px;
}
.sidebar-card p{font-size:13px;line-height:1.6;margin:0 0 10px;color:var(--primary-dark);}
.sidebar-card .btn{width:100%;}

.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.topbar{
  display:none;position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);padding:10px 14px;
  align-items:center;gap:12px;
}
.topbar .brand{padding:0;border:none;flex:1;min-width:0;}
.topbar .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:16px;border-radius:10px;}
.topbar .brand-text strong{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;}
.icon-btn{
  width:40px;height:40px;border-radius:11px;border:1px solid var(--line);
  background:#fff;color:var(--primary-dark);display:flex;align-items:center;justify-content:center;
  font-size:16px;transition:all .2s ease;
}
.icon-btn:hover{background:var(--primary-light);border-color:#C8DEE6;}
.backdrop{
  display:none;position:fixed;inset:0;background:rgba(23,37,46,.42);z-index:1045;
}
.backdrop.show{display:block;}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 26px;}
main{flex:1;}
section{padding:72px 0;}
section.tight{padding:56px 0;}

/* ---------- 按钮 ---------- */
.btn{
  border-radius:11px;font-weight:600;font-size:15px;padding:11px 22px;
  border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
}
.btn:active{transform:translateY(1px);}
.btn-primary-x{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(31,111,139,.24);}
.btn-primary-x:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(31,111,139,.3);}
.btn-amber{background:var(--amber);color:#2A1B03;box-shadow:0 6px 16px rgba(227,161,60,.28);}
.btn-amber:hover{background:var(--amber-dark);color:#231502;transform:translateY(-2px);box-shadow:0 10px 24px rgba(200,133,31,.34);}
.btn-outline-x{background:#fff;color:var(--primary);border-color:#BED8E1;}
.btn-outline-x:hover{background:var(--primary-light);color:var(--primary-dark);border-color:#9CC7D5;transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:#fff;color:var(--primary-dark);border-color:#C8DEE6;}
.btn-link-x{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14.5px;color:var(--primary-dark);
}
.btn-link-x:hover{gap:10px;color:var(--amber-dark);}

/* ---------- 徽章 / 标签 ---------- */
.badge-x{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.2px;
}
.badge-teal{background:var(--primary-light);color:var(--primary-dark);}
.badge-amber{background:var(--amber-light);color:var(--amber-dark);}
.badge-ok{background:#E7F6EF;color:var(--success);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--primary-dark);background:#fff;border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;box-shadow:var(--shadow);
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--amber);}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:64px 0 68px;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(247,249,250,.94) 0%,rgba(247,249,250,.86) 52%,rgba(232,242,245,.72) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-140px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(227,161,60,.16) 0%,rgba(227,161,60,0) 68%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.hero h1{margin:18px 0 16px;}
.hero h1 em{font-style:normal;color:var(--primary-dark);}
.hero-sub{font-size:17.5px;line-height:1.8;color:#3D525C;max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;}
.trust-row span{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 13px;
}
.trust-row i{color:var(--amber-dark);}
.phone-frame{
  position:relative;width:100%;max-width:342px;margin:0 auto;
  background:#fff;border:1px solid var(--line);border-radius:34px;padding:12px;
  box-shadow:0 22px 48px rgba(23,37,46,.14);
}
.phone-frame .screen{border-radius:24px;overflow:hidden;background:var(--primary-light);}
.phone-frame .screen img{width:100%;height:auto;aspect-ratio:9/17;object-fit:cover;}
.phone-notch{
  position:absolute;top:20px;left:50%;transform:translateX(-50%);
  width:88px;height:7px;border-radius:99px;background:rgba(23,37,46,.16);
}
.float-card{
  position:absolute;left:-26px;bottom:46px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:12px 15px;box-shadow:var(--shadow-lg);min-width:158px;
}
.float-card strong{display:block;font-size:19px;color:var(--primary-dark);}
.float-card span{font-size:12.5px;color:var(--ink-2);}

/* ---------- 数字条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);
  overflow:hidden;margin-top:-40px;position:relative;z-index:5;
}
.stat-item{padding:24px 22px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:none;}
.stat-item strong{display:block;font-size:27px;color:var(--primary-dark);line-height:1.2;}
.stat-item span{font-size:13.5px;color:var(--ink-2);}

/* ---------- 通用板块标题 ---------- */
.section-head{max-width:720px;margin-bottom:38px;}
.section-head h2{margin:14px 0 12px;}
.section-head p{margin:0;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;}
.bento-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.bento-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#CBE0E7;}
.bento-card .ico{
  width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-light);color:var(--primary-dark);font-size:19px;margin-bottom:16px;
}
.bento-card.amber .ico{background:var(--amber-light);color:var(--amber-dark);}
.bento-card h3{margin:0 0 10px;}
.bento-card p{margin:0 0 16px;font-size:15px;}
.bento-card .btn-link-x{margin-top:auto;}
.b-a{grid-column:span 4;background:linear-gradient(150deg,#fff 0%,#F3F9FB 100%);}
.b-a .split{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:center;}
.b-a img{border-radius:14px;border:1px solid var(--line);}
.b-b{grid-column:span 2;}
.b-c{grid-column:span 2;}
.b-d{grid-column:span 2;}
.b-e{grid-column:span 2;}

/* ---------- 轮播 ---------- */
.carousel-wrap{
  background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);
  padding:34px 34px 26px;
}
.slide-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:38px;align-items:center;}
.slide-grid h3{margin:14px 0 12px;}
.slide-grid ul{list-style:none;padding:0;margin:0 0 8px;display:flex;flex-direction:column;gap:9px;}
.slide-grid ul li{display:flex;gap:9px;font-size:15px;color:var(--ink-2);}
.slide-grid ul li i{color:var(--success);margin-top:5px;font-size:13px;}
.device{
  background:var(--primary-light);border:1px solid #D1E3E9;border-radius:18px;padding:14px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.6);
}
.device img{border-radius:12px;aspect-ratio:16/11;object-fit:cover;width:100%;}
.slide-caption{margin-top:12px;font-size:13.5px;color:var(--ink-2);text-align:center;}
#shotCarousel .carousel-indicators{position:static;margin:22px 0 0;gap:9px;}
#shotCarousel .carousel-indicators [data-bs-target]{
  width:34px;height:5px;border-radius:99px;background:#CFDDE3;opacity:1;border:none;transition:background .2s ease;
}
#shotCarousel .carousel-indicators .active{background:var(--amber);}
#shotCarousel .carousel-control-prev,
#shotCarousel .carousel-control-next{
  width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);
  top:auto;bottom:8px;opacity:1;box-shadow:var(--shadow);color:var(--primary-dark);
  transition:all .2s ease;
}
#shotCarousel .carousel-control-prev{left:auto;right:70px;}
#shotCarousel .carousel-control-next{right:18px;}
#shotCarousel .carousel-control-prev:hover,
#shotCarousel .carousel-control-next:hover{background:var(--primary-light);border-color:#BED8E1;}
#shotCarousel .carousel-item{transition:transform .38s ease-in-out,opacity .38s ease-in-out;}

/* ---------- 运行环境 ---------- */
.env-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.env-card{
  background:#fff;border:1px solid var(--line);border-radius:15px;padding:20px 22px;
  box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;
}
.env-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.env-card .top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;}
.env-card .top i{color:var(--primary);font-size:17px;}
.env-card h3{font-size:16.5px;margin:0;}
.env-card .val{font-size:15px;color:var(--ink);font-weight:600;margin-bottom:6px;}
.env-card p{font-size:14px;margin:0;}

/* ---------- 评价墙 ---------- */
.review-cols{column-count:3;column-gap:20px;}
.review-card{
  break-inside:avoid;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:22px;box-shadow:var(--shadow);margin-bottom:20px;transition:transform .2s ease,box-shadow .2s ease;
}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:0 0 42px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-light);color:var(--primary-dark);font-weight:700;font-size:16px;
}
.review-head .who{line-height:1.3;}
.review-head .who strong{display:block;font-size:14.5px;color:var(--ink);}
.review-head .who span{font-size:12.5px;color:var(--ink-2);}
.stars{color:var(--amber);font-size:12.5px;letter-spacing:2px;margin-bottom:8px;}
.review-card p{font-size:14.5px;margin:0 0 14px;line-height:1.75;}
.review-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px dashed var(--line);padding-top:12px;}
.review-foot time{font-size:12.5px;color:#93A2AA;}

/* ---------- 最新信息 ---------- */
.news-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;}
.news-main{
  background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease;
}
.news-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.news-main img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.news-main .body{padding:22px 24px 24px;}
.news-main h3{margin:12px 0 10px;font-size:20px;}
.news-main p{font-size:14.8px;margin:0 0 14px;}
.news-side{display:flex;flex-direction:column;gap:16px;}
.news-item{
  display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:15px;
  padding:16px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#CBE0E7;}
.news-item img{width:96px;height:76px;flex:0 0 96px;border-radius:11px;object-fit:cover;}
.news-item .txt{min-width:0;}
.news-item h3{font-size:15.5px;margin:6px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item .meta{display:flex;gap:10px;align-items:center;font-size:12.5px;color:#93A2AA;}
.empty-state{
  background:#fff;border:1px dashed #C9DBE2;border-radius:18px;padding:52px 24px;text-align:center;
}
.empty-state .ico{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--primary-light);
  color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-size:22px;
}
.empty-state h3{margin:0 0 8px;}
.empty-state p{margin:0 0 16px;font-size:14.5px;}

/* ---------- 下载 ---------- */
.download-block{
  background:linear-gradient(135deg,#155A73 0%,#1F6F8B 62%,#2A8199 100%);
  border-radius:22px;padding:46px 44px;color:#fff;position:relative;overflow:hidden;
}
.download-block::before{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(227,161,60,.32) 0%,rgba(227,161,60,0) 70%);
}
.download-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;}
.download-block h2{color:#fff;margin:0 0 14px;}
.download-block p{color:rgba(255,255,255,.84);margin:0 0 24px;max-width:560px;}
.dl-buttons{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px;}
.dl-meta{display:flex;flex-wrap:wrap;gap:22px;}
.dl-meta div{font-size:13.5px;color:rgba(255,255,255,.78);}
.dl-meta strong{display:block;font-size:17px;color:#fff;}
.qr-card{
  background:#fff;border-radius:18px;padding:20px;text-align:center;box-shadow:0 16px 36px rgba(9,32,42,.24);
}
.qr-box{
  width:150px;height:150px;margin:0 auto 14px;border-radius:14px;border:1px dashed #BBD3DC;
  background:repeating-linear-gradient(45deg,#F3F8FA 0 6px,#EAF3F6 6px 12px);
  display:flex;align-items:center;justify-content:center;color:var(--primary-dark);font-size:34px;
}
.qr-card strong{display:block;font-size:15px;color:var(--ink);margin-bottom:4px;}
.qr-card span{font-size:12.5px;color:var(--ink-2);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);
  overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{border-color:#CBE0E7;box-shadow:var(--shadow-lg);}
.faq-item button{
  width:100%;background:none;border:none;text-align:left;padding:19px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;
}
.faq-item button:focus{outline:none;box-shadow:inset 0 0 0 3px rgba(31,111,139,.14);}
.faq-item .sign{
  width:28px;height:28px;flex:0 0 28px;border-radius:9px;background:var(--primary-light);
  color:var(--primary-dark);display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease,background .25s ease;
}
.faq-item button[aria-expanded="true"] .sign{transform:rotate(180deg);background:var(--amber-light);color:var(--amber-dark);}
.faq-item .answer{padding:0 22px 20px;font-size:15px;color:var(--ink-2);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:44px;
  box-shadow:var(--shadow);display:grid;grid-template-columns:1.3fr .7fr;gap:34px;align-items:center;
}
.cta-band h2{margin:0 0 12px;}
.cta-band p{margin:0 0 22px;}
.cta-image{border-radius:16px;overflow:hidden;border:1px solid var(--line);}
.cta-image img{aspect-ratio:4/3;object-fit:cover;width:100%;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#123F4F;color:rgba(255,255,255,.76);padding:56px 0 26px;margin-top:20px;
}
.site-footer h4{color:#fff;font-size:15px;margin:0 0 16px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;}
.footer-brand strong{color:#fff;font-size:16px;}
.site-footer p{color:rgba(255,255,255,.68);font-size:14px;line-height:1.8;}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.74);font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-pills{display:flex;flex-wrap:wrap;gap:10px;}
.footer-pills span{
  font-size:12.5px;padding:5px 11px;border-radius:999px;background:rgba(255,255,255,.1);
  color:rgba(255,255,255,.82);
}

/* ---------- 移动吸底 ---------- */
.sticky-dl{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1060;
  background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-top:1px solid var(--line);
  padding:10px 14px;gap:10px;align-items:center;
}
.sticky-dl .btn{flex:1;padding:10px 12px;font-size:14px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sidebar-w:212px;}
  .hero-inner{gap:36px;}
  .bento{grid-template-columns:repeat(4,1fr);}
  .b-a{grid-column:span 4;}
  .b-b,.b-c,.b-d,.b-e{grid-column:span 2;}
  .review-cols{column-count:2;}
}
@media (max-width:991.98px){
  .sidebar{transform:translateX(-100%);transition:transform .28s ease;box-shadow:0 0 40px rgba(23,37,46,.2);}
  .sidebar.open{transform:translateX(0);}
  .app-main{margin-left:0;}
  .topbar{display:flex;}
  .hero{padding:44px 0 52px;}
  .hero-inner{grid-template-columns:1fr;}
  .phone-frame{max-width:300px;}
  .float-card{left:8px;bottom:20px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);margin-top:-28px;}
  .stat-item{border-bottom:1px solid var(--line);}
  .stat-item:nth-child(2){border-right:none;}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none;}
  .slide-grid{grid-template-columns:1fr;gap:24px;}
  .env-grid{grid-template-columns:repeat(2,1fr);}
  .news-layout{grid-template-columns:1fr;}
  .download-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .carousel-wrap{padding:24px;}
  section{padding:56px 0;}
}
@media (max-width:767.98px){
  .container-x{padding:0 18px;}
  .bento{grid-template-columns:1fr;}
  .b-a,.b-b,.b-c,.b-d,.b-e{grid-column:span 1;}
  .b-a .split{grid-template-columns:1fr;}
  .review-cols{column-count:1;}
  .env-grid{grid-template-columns:1fr;}
  .hero-actions .btn{flex:1 1 100%;}
  .slide-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  #shotCarousel .carousel-control-prev{right:62px;}
  section{padding:46px 0;}
}
@media (max-width:575.98px){
  .sticky-dl{display:flex;}
  body{padding-bottom:68px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-item{border-right:none;}
  .stat-item:nth-child(3){border-bottom:1px solid var(--line);}
  .download-block{padding:32px 22px;}
  .news-item img{width:78px;height:64px;flex:0 0 78px;}
  .hero h1{font-size:27px;}
  #shotCarousel .carousel-control-prev,
  #shotCarousel .carousel-control-next{display:none;}
}

/* roulang page: article */
:root{
  --brand:#1F6F8B;
  --brand-dark:#155A73;
  --brand-light:#E8F2F5;
  --amber:#E3A13C;
  --amber-dark:#C8851F;
  --amber-light:#FFF4E0;
  --bg:#F7F9FA;
  --card:#FFFFFF;
  --ink:#17252E;
  --ink-2:#5B6B75;
  --ink-3:#93A4AE;
  --line:#DCE6EA;
  --ok:#2F9E6B;
  --warn:#D9534F;
  --radius:16px;
  --radius-sm:11px;
  --shadow:0 8px 24px rgba(23,37,46,.06);
  --shadow-hover:0 14px 34px rgba(23,37,46,.10);
  --sidebar-w:236px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.38;color:var(--ink);}
p{margin:0 0 1.15em;}
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);}
img{max-width:100%;height:auto;display:block;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(31,111,139,.35);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 左侧 App Shell 导航 ============ */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--line);
  padding:22px 16px 22px;display:flex;flex-direction:column;
  z-index:1050;overflow-y:auto;
}
.brand{
  display:flex;align-items:center;gap:10px;padding:2px 6px 16px;
  border-bottom:1px solid var(--line);color:var(--ink);margin-bottom:18px;
}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(135deg,#1F6F8B,#2C8AA8);
  color:#fff;display:grid;place-items:center;font-size:19px;font-weight:700;
  box-shadow:0 6px 14px rgba(31,111,139,.28);
}
.brand-text{display:flex;flex-direction:column;font-size:15px;font-weight:700;line-height:1.3;}
.brand-text em{font-style:normal;font-size:11.5px;font-weight:400;color:var(--ink-3);letter-spacing:.02em;margin-top:2px;}
.nav-list{display:flex;flex-direction:column;gap:4px;}
.nav-label{font-size:11.5px;letter-spacing:.14em;color:#A9B7BF;padding:4px 10px 10px;font-weight:600;}
.nav-list a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  color:var(--ink-2);font-size:14.5px;font-weight:500;position:relative;
  transition:background-color .18s ease,color .18s ease;
}
.nav-list a i{width:18px;text-align:center;font-size:14px;color:var(--ink-3);transition:color .18s ease;}
.nav-list a:hover{background:#F2F6F8;color:var(--ink);}
.nav-list a:hover i{color:var(--brand);}
.nav-list a.active{background:var(--brand-light);color:var(--brand-dark);font-weight:600;}
.nav-list a.active i{color:var(--brand);}
.nav-list a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--amber);
}
.sidebar-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);}
.side-note{font-size:12px;color:var(--ink-3);margin:10px 0 0;text-align:center;line-height:1.6;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .2s ease;white-space:nowrap;line-height:1.2;
}
.btn-amber{background:var(--amber);color:#17252E;box-shadow:0 6px 16px rgba(227,161,60,.28);}
.btn-amber:hover{background:var(--amber-dark);color:#fff;transform:translateY(-1px);}
.btn-amber:active{transform:translateY(1px);}
.btn-primary-x{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(31,111,139,.24);}
.btn-primary-x:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-primary-x:active{transform:translateY(1px);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand);}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-light);color:var(--brand-dark);}
.btn-block{width:100%;}
.btn-sm-x{padding:8px 14px;font-size:13.5px;border-radius:9px;}

/* ============ 移动端顶栏 ============ */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:1030;
  align-items:center;justify-content:space-between;gap:12px;
  height:60px;padding:0 16px;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.mt-brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:15px;color:var(--ink);}
.mt-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;font-size:16px;border-radius:9px;box-shadow:none;}
.mt-actions{display:flex;align-items:center;gap:8px;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:#F2F6F8;color:var(--ink);font-size:16px;transition:.18s;
}
.icon-btn:hover{background:var(--brand-light);color:var(--brand-dark);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,37,46,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:1045;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ============ 主内容区 ============ */
.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.app-main > main{flex:1 0 auto;}

/* ============ 面包屑横幅 ============ */
.article-banner{
  position:relative;border-bottom:1px solid var(--line);
  padding:26px 0 22px;
  background-image:linear-gradient(180deg,rgba(247,249,250,.93),rgba(247,249,250,.99)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.breadcrumb-x{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--ink-2);flex-wrap:wrap;}
.breadcrumb-x a{color:var(--ink-2);}
.breadcrumb-x a:hover{color:var(--brand);}
.breadcrumb-x i{font-size:10px;color:#B3C0C7;}
.breadcrumb-x .current{color:var(--ink);font-weight:600;}

/* ============ 文章头部 ============ */
.article-head{max-width:880px;padding:36px 0 6px;}
.article-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.badge-tag{
  background:var(--brand-light);color:var(--brand-dark);font-size:12.5px;
  font-weight:600;padding:5px 13px;border-radius:999px;letter-spacing:.01em;
}
.badge-soft{
  background:var(--amber-light);color:var(--amber-dark);font-size:12.5px;
  font-weight:600;padding:5px 13px;border-radius:999px;
}
.article-head h1{
  font-size:clamp(24px,3.1vw,36px);line-height:1.42;font-weight:700;
  letter-spacing:-.01em;color:var(--ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:20px;
  font-size:13.5px;color:var(--ink-2);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--ink-3);font-size:13px;}

/* ============ 正文阅读区 ============ */
.article-body{max-width:860px;padding:28px 0 10px;font-size:16.5px;line-height:1.85;color:#22333D;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:26px;line-height:1.45;margin:44px 0 16px;padding-left:15px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;
  border-radius:4px;background:var(--amber);
}
.article-body h3{font-size:19.5px;margin:32px 0 12px;color:#1B2E39;}
.article-body h4{font-size:17px;margin:24px 0 10px;}
.article-body p{margin:0 0 1.32em;}
.article-body img{border-radius:12px;margin:24px 0 10px;box-shadow:var(--shadow);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:4px;}
.article-body ul,.article-body ol{margin:0 0 1.32em;padding-left:4px;}
.article-body ul li,.article-body ol li{position:relative;padding-left:24px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;
  border-radius:50%;background:var(--brand);opacity:.7;
}
.article-body ol{counter-reset:li;}
.article-body ol li{counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.34em;width:18px;height:18px;
  border-radius:50%;background:var(--brand-light);color:var(--brand-dark);
  font-size:11px;font-weight:700;display:grid;place-items:center;line-height:1;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--amber-light);
  border-left:3px solid var(--amber);border-radius:0 12px 12px 0;color:#4C3A19;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{font-weight:600;border-bottom:1px solid rgba(31,111,139,.35);}
.article-body a:hover{border-bottom-color:var(--brand-dark);}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;
  display:block;overflow-x:auto;white-space:normal;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:var(--brand-light);color:var(--brand-dark);font-weight:600;}
.article-body code{background:#EEF3F5;padding:2px 7px;border-radius:6px;font-size:.92em;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}

/* ============ 空态 ============ */
.empty-state{
  max-width:860px;text-align:center;padding:64px 24px;background:#fff;
  border:1px dashed var(--line);border-radius:var(--radius);margin:28px 0 10px;
}
.es-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  background:var(--brand-light);display:grid;place-items:center;
  font-size:26px;color:var(--brand);
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--ink-2);font-size:14.5px;margin-bottom:22px;}

/* ============ 标签 ============ */
.article-tags{
  display:flex;flex-wrap:wrap;gap:9px;align-items:center;
  max-width:860px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line);
}
.article-tags .tg-label{font-size:13px;color:var(--ink-3);margin-right:4px;}
.tag-chip{
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
  font-size:13px;padding:6px 14px;border-radius:999px;transition:.18s;
}
.tag-chip:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-light);}

/* ============ 上一篇 / 下一篇 ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:860px;margin:26px 0 0;}
.post-nav a{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 22px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-nav a:hover{
  border-color:var(--brand);box-shadow:var(--shadow-hover);
  transform:translateY(-2px);color:inherit;
}
.post-nav .pn-label{display:block;font-size:12.5px;color:var(--ink-3);margin-bottom:7px;}
.post-nav .pn-title{font-size:15px;font-weight:600;color:var(--ink);}
.post-nav .next{text-align:right;}

/* ============ 相关推荐 ============ */
.related-section{padding:68px 0 0;}
.section-title{font-size:24px;margin-bottom:8px;}
.section-sub{color:var(--ink-2);font-size:14.5px;margin-bottom:28px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);color:inherit;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C9DCE3;color:inherit;}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-light);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.05);}
.rel-body{padding:18px 20px 22px;}
.rel-cat{
  display:inline-block;font-size:12px;font-weight:600;color:var(--amber-dark);
  background:var(--amber-light);padding:3px 11px;border-radius:999px;margin-bottom:11px;
}
.rel-body h3{font-size:16.5px;line-height:1.5;margin-bottom:9px;}
.rel-date{font-size:13px;color:var(--ink-3);}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:24px;width:46px;height:46px;border-radius:14px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
  display:grid;place-items:center;color:var(--brand);font-size:16px;z-index:1020;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,background-color .2s ease;
}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{background:var(--brand);color:#fff;border-color:var(--brand);}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:76px;padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-size:16px;}
.footer-brand strong{font-size:16px;}
.site-footer p{font-size:14px;color:var(--ink-2);line-height:1.85;}
.site-footer h4{font-size:15px;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--ink-2);}
.footer-links a:hover{color:var(--brand);}
.footer-pills{display:flex;flex-wrap:wrap;gap:8px;}
.footer-pills span{
  background:var(--brand-light);color:var(--brand-dark);
  font-size:12.5px;padding:5px 12px;border-radius:999px;font-weight:500;
}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .container-x{padding:0 20px;}
  .article-body{font-size:16px;}
}
@media (max-width:991.98px){
  .app-sidebar{
    transform:translateX(-100%);
    transition:transform .28s ease;
    box-shadow:0 0 40px rgba(23,37,46,.18);
    width:264px;
  }
  .app-sidebar.open{transform:translateX(0);}
  .app-main{margin-left:0;}
  .mobile-topbar{display:flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767.98px){
  .article-head{padding-top:26px;}
  .article-body{font-size:16px;padding-top:20px;}
  .article-body h2{font-size:22px;margin:34px 0 14px;}
  .article-body h3{font-size:18px;margin:26px 0 10px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav .next{text-align:left;}
  .related-section{padding-top:52px;}
  .site-footer{margin-top:56px;padding-top:44px;}
}
@media (max-width:575.98px){
  .container-x{padding:0 16px;}
  .footer-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .article-head h1{font-size:23px;}
  .article-meta{gap:8px 14px;font-size:13px;}
  .to-top{right:16px;bottom:18px;width:42px;height:42px;}
  .mt-brand span.mt-name{max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
}

/* roulang page: category1 */
:root{
  --brand:#1F6F8B;
  --brand-dark:#155A73;
  --brand-light:#E8F2F5;
  --amber:#E3A13C;
  --amber-dark:#C8851F;
  --amber-light:#FFF4E0;
  --bg:#F7F9FA;
  --surface:#FFFFFF;
  --ink:#17252E;
  --muted:#5B6B75;
  --line:#DCE6EA;
  --ok:#2F9E6B;
  --warn:#D9534F;
  --r-sm:10px;
  --r:14px;
  --r-lg:18px;
  --sh:0 8px 24px rgba(23,37,46,.06);
  --sh-hover:0 14px 32px rgba(23,37,46,.10);
  --sidebar-w:236px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background .2s ease;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:-.01em;}
p{margin:0;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:3px solid rgba(31,111,139,.28);
  outline-offset:2px;
  border-radius:8px;
}

/* ============ 布局壳层 ============ */
.app-shell{display:block;min-height:100vh;}
.sidebar{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  padding:22px 16px 26px;
  display:flex;
  flex-direction:column;
  gap:22px;
  overflow-y:auto;
  z-index:1040;
  transition:transform .28s ease;
}
.sidebar-inner{display:flex;flex-direction:column;gap:22px;height:100%;}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 8px;
  border-radius:12px;
  color:var(--ink);
}
.brand:hover{color:var(--brand-dark);}
.brand-mark{
  width:34px;height:34px;
  flex:0 0 34px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;
  display:grid;
  place-items:center;
  font-weight:700;
  font-size:16px;
  box-shadow:0 6px 14px rgba(31,111,139,.26);
}
.brand-text{font-weight:700;font-size:16px;letter-spacing:.01em;}

.nav-label{
  font-size:12px;
  color:#93A2AB;
  letter-spacing:.14em;
  padding:0 12px 8px;
  font-weight:600;
}
.nav-list{display:flex;flex-direction:column;gap:4px;}
.nav-list li{position:relative;}
.nav-list a{
  position:relative;
  display:flex;
  align-items:center;
  gap:11px;
  padding:11px 12px;
  border-radius:11px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
}
.nav-list a i{width:18px;text-align:center;font-size:15px;color:#8CA0AB;transition:color .2s ease;}
.nav-list a:hover{background:#F2F6F8;color:var(--ink);}
.nav-list a:hover i{color:var(--brand);}
.nav-list a.active{background:var(--brand-light);color:var(--brand-dark);font-weight:600;}
.nav-list a.active i{color:var(--brand);}
.nav-list a.active::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:18px;
  border-radius:3px;
  background:var(--amber);
}
.sidebar-cta{
  margin-top:auto;
  background:linear-gradient(160deg,#F2F8FA,#E8F2F5);
  border:1px solid #D5E5EB;
  border-radius:var(--r);
  padding:16px;
}
.sidebar-cta p{font-size:13.5px;color:var(--muted);line-height:1.6;margin-bottom:12px;}

.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 28px;}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;
  position:sticky;top:0;z-index:1030;
  height:64px;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:0 16px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar .brand{padding:0;gap:8px;}
.topbar-actions{display:flex;align-items:center;gap:8px;}
.menu-btn{
  width:40px;height:40px;
  border-radius:11px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand);
  font-size:16px;
  display:grid;place-items:center;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.menu-btn:hover{background:var(--brand-light);border-color:#C9DEE6;}
.backdrop{
  display:none;
  position:fixed;inset:0;
  background:rgba(23,37,46,.46);
  z-index:1035;
}
.backdrop.show{display:block;}

/* ============ 通用组件 ============ */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 13px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.eyebrow.amber{background:var(--amber-light);color:var(--amber-dark);}
.tag{
  display:inline-block;
  padding:4px 11px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:12.5px;
  font-weight:600;
}
.tag.amber{background:var(--amber-light);color:var(--amber-dark);}
.tag.line{background:#fff;border:1px solid var(--line);color:var(--muted);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,background .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px rgba(31,111,139,.22);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(31,111,139,.26);}
.btn-amber{background:var(--amber);color:#231703;box-shadow:0 10px 22px rgba(227,161,60,.26);}
.btn-amber:hover{background:var(--amber-dark);color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;border-color:#B9D3DC;color:var(--brand-dark);}
.btn-outline:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--muted);}
.btn-ghost:hover{background:#F2F6F8;color:var(--ink);}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh);
  padding:24px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#CFE0E7;}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:15.5px;color:var(--muted);}

.icon-box{
  width:44px;height:44px;
  border-radius:13px;
  display:grid;place-items:center;
  background:var(--brand-light);
  color:var(--brand);
  font-size:18px;
  margin-bottom:16px;
}
.icon-box.amber{background:var(--amber-light);color:var(--amber-dark);}

.section{padding:76px 0;}
.section.surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:30px;margin:16px 0 12px;}
.section-head p{color:var(--muted);font-size:16px;}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:64px 0 80px;background:var(--surface);}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(247,249,250,.70),rgba(247,249,250,.96));
}
.hero-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:52px;
  align-items:center;
}
.hero h1{
  font-size:clamp(28px,3.3vw,42px);
  margin:18px 0 16px;
  letter-spacing:-.02em;
}
.hero-sub{
  font-size:19px;
  font-weight:600;
  color:#28414C;
  margin-bottom:14px;
}
.hero-desc{color:var(--muted);font-size:16.5px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.trust li{
  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(--muted);
  box-shadow:0 4px 12px rgba(23,37,46,.04);
}
.trust li i{color:var(--amber);font-size:13px;}

.hero-visual{position:relative;display:grid;place-items:center;padding:10px 0 22px;}
.arc{
  position:absolute;
  width:400px;height:400px;
  border-radius:50%;
  border:36px solid rgba(31,111,139,.06);
  top:-40px;right:-60px;
  pointer-events:none;
}
.phone-frame{
  position:relative;
  width:296px;
  background:#fff;
  border:1px solid #CFE0E7;
  border-radius:30px;
  padding:11px;
  box-shadow:0 24px 48px rgba(23,37,46,.14);
}
.phone-frame::before{
  content:"";
  position:absolute;
  top:16px;left:50%;
  transform:translateX(-50%);
  width:66px;height:5px;
  border-radius:999px;
  background:#DCE6EA;
}
.phone-frame img{
  width:100%;
  height:466px;
  object-fit:cover;
  border-radius:21px;
}
.float-card{
  position:absolute;
  left:0;bottom:6px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:0 14px 32px rgba(23,37,46,.12);
  padding:14px 18px;
  min-width:172px;
}
.float-card .num{
  font-size:24px;
  font-weight:700;
  color:var(--brand-dark);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.float-card .num em{color:var(--amber-dark);font-style:normal;}
.float-card span{font-size:13px;color:var(--muted);}

/* ============ Bento ============ */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;}
.bento-main{
  grid-column:span 4;
  display:flex;
  flex-direction:column;
  gap:18px;
  background:linear-gradient(165deg,#FFFFFF 40%,#F1F8FA 100%);
  padding:22px;
}
.bento-main img{
  width:100%;
  height:236px;
  object-fit:cover;
  border-radius:var(--r);
  border:1px solid var(--line);
}
.bento-side{grid-column:span 2;display:flex;flex-direction:column;}
.bento-item{grid-column:span 2;}
.bento h3{font-size:19px;}
.bento-main h3{font-size:22px;margin:12px 0 10px;}

/* ============ 对照卡 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare .card{padding:28px;}
.compare .card h3{display:flex;align-items:center;gap:10px;font-size:20px;}
.compare .card h3 i{color:var(--brand);}
.compare .card > p{margin-bottom:18px;}
.check-list{display:flex;flex-direction:column;gap:12px;}
.check-list li{
  display:flex;
  gap:11px;
  align-items:flex-start;
  font-size:15px;
  color:#33454F;
  padding-bottom:12px;
  border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list li i{color:var(--ok);font-size:14px;margin-top:6px;flex:0 0 16px;}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:24px 22px;
  box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.step-num{
  width:34px;height:34px;
  border-radius:11px;
  background:var(--amber-light);
  color:var(--amber-dark);
  font-weight:700;
  display:grid;place-items:center;
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17.5px;margin-bottom:8px;}
.step p{font-size:14.8px;color:var(--muted);}

/* ============ 轮播 ============ */
.shot-carousel{position:relative;padding:0 56px;}
.shot-frame{
  width:290px;
  margin:0 auto;
  background:#fff;
  border:1px solid #CFE0E7;
  border-radius:26px;
  padding:10px;
  box-shadow:0 20px 40px rgba(23,37,46,.12);
}
.shot-frame img{width:100%;height:420px;object-fit:cover;border-radius:18px;}
.shot-cap{text-align:center;margin-top:18px;color:var(--muted);font-size:14.5px;font-weight:500;}
.shot-carousel .carousel-indicators{position:static;margin:26px 0 0;}
.shot-carousel .carousel-indicators [data-bs-target]{
  width:28px;height:4px;
  border-radius:3px;
  background:#C9D8DE;
  border:0;
  opacity:1;
  margin:0 5px;
  transition:background .22s ease,width .22s ease;
}
.shot-carousel .carousel-indicators .active{background:var(--brand);width:40px;}
.shot-carousel .carousel-control-prev,
.shot-carousel .carousel-control-next{
  width:46px;height:46px;
  top:calc(50% - 23px);
  border-radius:50%;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--sh);
  opacity:1;
  display:grid;
  place-items:center;
  transition:background .22s ease,transform .22s ease;
}
.shot-carousel .carousel-control-prev{left:0;}
.shot-carousel .carousel-control-next{right:0;}
.shot-carousel .carousel-control-prev:hover,
.shot-carousel .carousel-control-next:hover{background:var(--brand-light);}
.shot-carousel .carousel-control-prev i,
.shot-carousel .carousel-control-next i{color:var(--brand);font-size:16px;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px;}
details.faq{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--sh);
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
details.faq:hover{border-color:#CFE0E7;box-shadow:var(--sh-hover);}
details.faq summary{
  list-style:none;
  cursor:pointer;
  padding:18px 22px;
  font-size:16.5px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary::after{
  content:"+";
  font-size:21px;
  font-weight:500;
  color:var(--brand);
  line-height:1;
  transition:transform .25s ease,color .25s ease;
  flex:0 0 auto;
}
details.faq[open] summary{color:var(--brand-dark);}
details.faq[open] summary::after{content:"–";transform:rotate(180deg);color:var(--amber-dark);}
.faq-body{padding:0 22px 20px;color:var(--muted);font-size:15.5px;max-width:820px;}

/* ============ CTA ============ */
.cta-wrap{padding:0 0 72px;}
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:24px;
  padding:46px 44px;
  background:linear-gradient(135deg,#155A73 0%,#1F6F8B 62%,#2C82A1 100%);
  color:#fff;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:36px;
  align-items:center;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-90px;top:-110px;
  width:340px;height:340px;
  border-radius:50%;
  border:44px solid rgba(255,255,255,.07);
  pointer-events:none;
}
.cta-band h2{font-size:28px;margin-bottom:14px;color:#fff;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15.5px;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.cta-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.cta-meta span{
  padding:6px 13px;
  border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.18);
  font-size:13px;
  color:rgba(255,255,255,.9);
}
.qr-card{
  position:relative;
  z-index:1;
  background:#fff;
  border-radius:var(--r-lg);
  padding:22px;
  text-align:center;
  box-shadow:0 18px 36px rgba(9,40,54,.24);
  justify-self:center;
  width:100%;
  max-width:280px;
}
.qr-card img{
  width:180px;height:180px;
  object-fit:cover;
  margin:0 auto 14px;
  border-radius:12px;
  border:1px solid var(--line);
}
.qr-card strong{display:block;color:var(--ink);font-size:15.5px;margin-bottom:6px;}
.qr-card span{color:var(--muted);font-size:13px;}

/* ============ 页脚 ============ */
.site-footer{
  background:#fff;
  border-top:1px solid var(--line);
  padding:56px 0 28px;
  margin-top:auto;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16.5px;}
.site-footer h4{font-size:15.5px;margin-bottom:14px;color:var(--ink);}
.site-footer p{color:var(--muted);font-size:14.5px;line-height:1.8;max-width:360px;}
.footer-links{display:flex;flex-direction:column;gap:8px;}
.footer-links li a{color:var(--muted);font-size:14.5px;}
.footer-links li a:hover{color:var(--brand);}
.footer-pills{display:flex;flex-wrap:wrap;gap:8px;}
.footer-pills span{
  padding:5px 12px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:12.5px;
  font-weight:500;
}
.footer-bottom{
  margin-top:38px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  font-size:13.5px;
  color:var(--muted);
}

/* ============ 移动端吸底 ============ */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1050;
  gap:10px;
  padding:10px 14px;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 22px rgba(23,37,46,.10);
}
.mobile-bar .btn{flex:1;}
.mobile-bar .btn-qr{flex:0 0 120px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container-x{padding:0 24px;}
  .hero-inner{gap:36px;}
  .section{padding:68px 0;}
}

@media (max-width:991px){
  .sidebar{transform:translateX(-100%);width:270px;box-shadow:0 0 40px rgba(23,37,46,.18);}
  .sidebar.open{transform:translateX(0);}
  .topbar{display:flex;}
  .main{margin-left:0;}
  .hero{padding:44px 0 60px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-desc{max-width:none;}
  .hero-visual{order:-1;}
  .arc{display:none;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-main{grid-column:span 2;}
  .bento-side,.bento-item{grid-column:span 1;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;}
  .qr-card{justify-self:start;}
}

@media (max-width:767px){
  .container-x{padding:0 18px;}
  .section{padding:54px 0;}
  .section-head h2{font-size:25px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:17px;}
  .phone-frame{width:264px;}
  .phone-frame img{height:400px;}
  .float-card{position:static;margin-top:18px;text-align:center;}
  .compare{grid-template-columns:1fr;}
  .bento{grid-template-columns:1fr;}
  .bento-main,.bento-side,.bento-item{grid-column:span 1;}
  .bento-main img{height:200px;}
  .steps{grid-template-columns:1fr;}
  .shot-carousel{padding:0 44px;}
  .shot-frame{width:250px;}
  .shot-frame img{height:352px;}
  .cta-band h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:575px){
  body{padding-bottom:74px;}
  .mobile-bar{display:flex;}
  .hero-actions .btn,.cta-actions .btn{width:100%;}
  .hero-actions,.cta-actions{flex-direction:column;}
  .shot-carousel{padding:0 34px;}
  .shot-frame{width:220px;}
  .shot-frame img{height:310px;}
  .shot-carousel .carousel-control-prev,
  .shot-carousel .carousel-control-next{width:38px;height:38px;top:calc(50% - 19px);}
  .trust li{font-size:13px;}
}

/* roulang page: category2 */
:root{
  --primary:#1F6F8B;
  --primary-dark:#155A73;
  --primary-soft:#E8F2F5;
  --amber:#E3A13C;
  --amber-dark:#C8851F;
  --amber-soft:#FFF4E0;
  --bg:#F7F9FA;
  --surface:#FFFFFF;
  --ink:#17252E;
  --ink-2:#5B6B75;
  --line:#DCE6EA;
  --ok:#2F9E6B;
  --warn:#D9534F;
  --r-s:10px;
  --r:14px;
  --r-l:18px;
  --shadow:0 8px 24px rgba(23,37,46,.06);
  --shadow-h:0 14px 34px rgba(23,37,46,.10);
  --sidebar:240px;
  --topbar:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;height:auto;display:block;border-radius:var(--r);}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:700;line-height:1.35;letter-spacing:.01em;}
h1{font-size:clamp(28px,3.4vw,42px);}
h2{font-size:clamp(24px,2.4vw,30px);}
h3{font-size:clamp(18px,1.6vw,21px);}
h4{font-size:17px;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,111,139,.35);outline-offset:2px;}

/* ---------- 左侧 App Shell ---------- */
.app-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:var(--surface);border-right:1px solid var(--line);
  padding:24px 18px;display:flex;flex-direction:column;gap:22px;
  z-index:1040;transition:transform .3s ease;
}
.shell-brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:18px;
}
.brand-text strong{display:block;font-size:15px;line-height:1.3;color:var(--ink);}
.brand-text small{display:block;font-size:12px;color:var(--ink-2);letter-spacing:.06em;}
.nav-label{
  font-size:12px;color:var(--ink-2);letter-spacing:.16em;
  padding:0 12px 8px;list-style:none;
}
.nav-list li + li{margin-top:4px;}
.nav-list a{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:var(--r-s);
  color:var(--ink);font-size:15px;font-weight:500;
  border-left:3px solid transparent;transition:all .2s ease;
}
.nav-list a i{width:18px;text-align:center;color:var(--ink-2);font-size:14px;transition:color .2s ease;}
.nav-list a:hover{background:#F1F5F7;color:var(--primary-dark);}
.nav-list a:hover i{color:var(--primary);}
.nav-list a.active{
  background:var(--primary-soft);color:var(--primary-dark);
  border-left-color:var(--amber);font-weight:600;
}
.nav-list a.active i{color:var(--primary);}
.shell-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:18px;}
.shell-foot p{font-size:12.5px;color:var(--ink-2);margin:10px 0 0;text-align:center;}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-s);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease;
  text-align:center;line-height:1.4;
}
.btn-primary-x{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(31,111,139,.22);}
.btn-primary-x:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(31,111,139,.28);}
.btn-primary-x:active{transform:translateY(1px);}
.btn-amber{
  background:var(--amber);color:#3A2A08;box-shadow:0 6px 16px rgba(227,161,60,.28);
}
.btn-amber:hover{background:var(--amber-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(200,133,31,.32);}
.btn-amber:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-dark);background:var(--primary-soft);transform:translateY(-2px);}
.btn-line{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-line:hover{border-color:var(--primary);color:var(--primary-dark);}
.btn-x.btn-sm-x{padding:8px 16px;font-size:14px;}
.btn-x.w-100{width:100%;}

/* ---------- 主内容 ---------- */
.app-main{margin-left:var(--sidebar);min-height:100vh;}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px;}
section{padding:0;}
.section{padding:64px 0;}
.section-tight{padding:48px 0;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--primary);background:var(--primary-soft);
  padding:5px 13px;border-radius:999px;margin-bottom:14px;
}
.section-head p{color:var(--ink-2);font-size:16px;margin:0;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 顶部移动栏 ---------- */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:1035;
  height:var(--topbar);background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 16px;
}
.mobile-topbar .brand-text strong{font-size:14px;}
.topbar-actions{display:flex;align-items:center;gap:10px;}
.menu-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);display:flex;align-items:center;justify-content:center;
  font-size:16px;cursor:pointer;
}
.menu-btn:hover{border-color:var(--primary);color:var(--primary);}
.shell-overlay{
  display:none;position:fixed;inset:0;background:rgba(23,37,46,.42);z-index:1039;
}
.shell-overlay.show{display:block;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-color:var(--primary-soft);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.9) 46%,rgba(255,255,255,.6) 100%);
}
.hero-inner{position:relative;padding:60px 0 68px;display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;}
.crumbs{font-size:13.5px;color:var(--ink-2);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumbs a{color:var(--ink-2);}
.crumbs a:hover{color:var(--primary);}
.crumbs span.sep{color:#B9C7CE;}
.hero h1{margin-bottom:18px;}
.hero h1 .hl{color:var(--primary);}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:520px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;}
.trust-pill{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13px;color:var(--ink-2);box-shadow:0 4px 12px rgba(23,37,46,.04);
}
.trust-pill i{color:var(--amber);font-size:12px;}
.hero-visual{position:relative;}
.device-frame{
  background:#fff;border:1px solid var(--line);border-radius:26px;
  padding:12px;box-shadow:0 22px 50px rgba(23,37,46,.14);
}
.device-frame img{border-radius:18px;width:100%;}
.device-caption{
  margin-top:12px;font-size:13px;color:var(--ink-2);text-align:center;
}
.float-card{
  position:absolute;left:-18px;bottom:34px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);box-shadow:var(--shadow);padding:14px 18px;
}
.float-card strong{display:block;font-size:20px;color:var(--primary);font-variant-numeric:tabular-nums;}
.float-card span{font-size:12.5px;color:var(--ink-2);}

/* ---------- 下载按钮组 ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.dl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:26px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.dl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);}
.dl-card .icon-sq{
  width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-size:20px;
}
.dl-card .icon-sq.amber{background:var(--amber-soft);color:var(--amber-dark);}
.dl-card h3{margin:0;font-size:19px;}
.dl-card p{color:var(--ink-2);font-size:14.5px;margin:0;}
.dl-meta{display:flex;flex-wrap:wrap;gap:8px;}
.meta-pill{
  font-size:12.5px;color:var(--ink-2);background:#F1F5F7;border-radius:999px;padding:4px 11px;
  font-variant-numeric:tabular-nums;
}
.qr-box{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r);
  padding:18px;display:flex;flex-direction:column;align-items:center;gap:8px;
}
.qr-box i{font-size:64px;color:var(--ink);}
.qr-box span{font-size:12.5px;color:var(--ink-2);}

/* ---------- 步骤卡 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:24px 22px;box-shadow:var(--shadow);position:relative;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:#C9DCE3;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;background:var(--amber-soft);
  color:var(--amber-dark);font-weight:700;font-size:15px;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:17.5px;margin-bottom:8px;}
.step-card p{font-size:14.5px;color:var(--ink-2);margin:0;}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.req-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:20px 22px;display:flex;align-items:flex-start;gap:14px;
  box-shadow:0 6px 18px rgba(23,37,46,.05);transition:box-shadow .25s ease,transform .25s ease;
}
.req-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);}
.req-item .req-ico{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.req-item .req-body{flex:1;min-width:0;}
.req-item .req-label{font-size:13px;color:var(--ink-2);margin-bottom:3px;}
.req-item .req-value{font-size:15.5px;font-weight:600;margin-bottom:8px;word-break:break-word;}
.badge-x{
  display:inline-block;font-size:12.5px;padding:3px 11px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-dark);font-weight:600;
}
.badge-x.amber{background:var(--amber-soft);color:var(--amber-dark);}
.badge-x.ok{background:#E7F6EF;color:var(--ok);}
.badge-x.warn{background:#FDECEB;color:var(--warn);}

/* ---------- 帮助卡矩阵 ---------- */
.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.help-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:26px 24px;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.help-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:#C9DCE3;}
.help-card .hc-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.help-card .hc-ico{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-size:17px;
}
.help-card h3{font-size:17.5px;margin:0;}
.help-card p{font-size:14.5px;color:var(--ink-2);margin:0 0 16px;}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;margin-top:auto;}
.link-more i{font-size:11px;transition:transform .2s ease;}
.link-more:hover i{transform:translateX(4px);}

/* ---------- 图文 / 信息列表 ---------- */
.info-split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.info-split img{box-shadow:var(--shadow);border:1px solid var(--line);}
.check-list li{
  display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:15.5px;
}
.check-list li:last-child{border-bottom:0;}
.check-list i{color:var(--ok);margin-top:5px;font-size:14px;}
.check-list strong{display:block;font-size:15.5px;margin-bottom:2px;}
.check-list span{color:var(--ink-2);font-size:14.5px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:0 6px 18px rgba(23,37,46,.05);overflow:hidden;
}
.faq-item .faq-btn{
  width:100%;text-align:left;background:transparent;border:0;cursor:pointer;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:background .2s ease,color .2s ease;
}
.faq-item .faq-btn:hover{background:#F4F8FA;color:var(--primary-dark);}
.faq-item .faq-btn:focus{box-shadow:none;}
.faq-item .faq-btn .plus{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;transition:transform .3s ease,background .3s ease,color .3s ease;
}
.faq-item .faq-btn[aria-expanded="true"] .plus{transform:rotate(180deg);background:var(--amber);color:#fff;}
.faq-item .faq-body{padding:0 24px 22px;color:var(--ink-2);font-size:15px;line-height:1.8;}
.faq-item .faq-body p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-dark) 100%);
  border-radius:22px;padding:52px 48px;color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:rgba(227,161,60,.24);filter:blur(6px);
}
.cta-inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{color:#fff;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.86);margin:0;max-width:560px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-actions .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.42);}
.cta-actions .btn-ghost:hover{background:#fff;color:var(--primary-dark);border-color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:#FFFFFF;border-top:1px solid var(--line);padding:56px 0 26px;margin-top:20px;}
.container-x{max-width:1180px;margin:0 auto;padding:0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16px;}
.site-footer p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.site-footer h4{font-size:15px;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--ink-2);}
.footer-links a:hover{color:var(--primary);}
.footer-pills{display:flex;flex-wrap:wrap;gap:8px;}
.footer-pills span{
  font-size:12.5px;color:var(--ink-2);background:#F1F5F7;border-radius:999px;padding:5px 12px;
  font-variant-numeric:tabular-nums;
}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-2);
}

/* ---------- 移动端吸底下载条 ---------- */
.sticky-dl{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1050;
  background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);padding:10px 14px;
  gap:10px;align-items:center;
}
.sticky-dl .sd-info{flex:1;min-width:0;}
.sticky-dl .sd-info strong{display:block;font-size:14px;}
.sticky-dl .sd-info span{font-size:12px;color:var(--ink-2);}
.sticky-dl .btn-x{padding:10px 16px;font-size:14px;}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--primary);
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);
  cursor:pointer;opacity:0;visibility:hidden;transition:all .25s ease;z-index:1045;
}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{background:var(--primary);color:#fff;border-color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-inner{gap:36px;}
  .dl-grid{grid-template-columns:repeat(3,1fr);gap:18px;}
  .req-grid{grid-template-columns:repeat(2,1fr);}
  .help-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
}
@media (max-width:991px){
  .app-shell{transform:translateX(-100%);box-shadow:0 0 40px rgba(23,37,46,.18);}
  .app-shell.open{transform:translateX(0);}
  .app-main{margin-left:0;}
  .mobile-topbar{display:flex;}
  .hero-inner{grid-template-columns:1fr;padding:44px 0 52px;}
  .hero-visual{max-width:520px;}
  .float-card{left:auto;right:14px;bottom:18px;}
  .info-split{grid-template-columns:1fr;gap:28px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .section{padding:52px 0;}
}
@media (max-width:767px){
  .wrap,.container-x{padding:0 18px;}
  .dl-grid{grid-template-columns:1fr;}
  .help-grid{grid-template-columns:1fr;}
  .req-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .cta-band{padding:36px 24px;border-radius:18px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .hero-actions .btn-x{flex:1 1 100%;}
  .to-top{right:16px;bottom:88px;}
}
@media (max-width:575px){
  .steps{grid-template-columns:1fr;}
  .sticky-dl{display:flex;}
  .site-footer{padding-bottom:96px;}
  .float-card{display:none;}
  h1{font-size:27px;}
}