/* roulang page: index */
:root{
  --c-primary:#1D6FE8;
  --c-primary-dark:#0F4FB0;
  --c-accent:#FF7A45;
  --c-soft:#EAF1FF;
  --c-bg-soft:#F5F8FC;
  --c-line:#E3EBF5;
  --c-text:#0E2138;
  --c-text-2:#5A6B80;
  --c-text-3:#8C9AAB;
  --c-ok:#14A38B;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --sh:0 6px 20px rgba(16,42,80,.06);
  --sh-h:0 14px 32px rgba(16,42,80,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:#fff;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.3px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:16px;font-weight:600;border:1.5px solid transparent;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);box-shadow:0 8px 18px rgba(29,111,232,.28)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary-dark)}
.btn-ghost:hover{background:var(--c-soft)}
.btn-sm{height:38px;padding:0 20px;font-size:14px}
[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;transition:box-shadow .2s ease}
.site-header.shrink{box-shadow:0 6px 16px rgba(16,42,80,.08)}
.topbar{background:var(--c-bg-soft);border-bottom:1px solid var(--c-line);font-size:13px;color:var(--c-text-2)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px}
.topbar-right{display:flex;align-items:center;gap:20px}
.topbar-right a:hover{color:var(--c-primary)}
.navbar{border-bottom:1px solid var(--c-line);transition:height .2s ease}
.navbar-inner{display:flex;align-items:center;gap:32px;height:72px;transition:height .2s ease}
.site-header.shrink .navbar-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;letter-spacing:-.5px;transition:transform .2s ease}
.site-header.shrink .logo{transform:scale(.95)}
.logo-mark{
  width:30px;height:30px;border-radius:9px;background:var(--c-primary);
  position:relative;flex:none;
}
.logo-mark::after{
  content:"";position:absolute;left:11px;top:8px;
  border-left:10px solid #fff;border-top:7px solid transparent;border-bottom:7px solid transparent;
}
.main-nav{display:flex;align-items:center;gap:26px;font-size:15px;color:var(--c-text-2);margin-left:auto}
.main-nav a{padding:6px 0;border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease}
.main-nav a:hover{color:var(--c-primary);border-color:var(--c-primary)}
.nav-actions{display:flex;align-items:center;gap:12px}
.search-btn{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:var(--c-text-2);transition:background .2s ease,color .2s ease;
}
.search-btn:hover{background:var(--c-soft);color:var(--c-primary)}
.search-box{
  width:0;opacity:0;padding:0;height:38px;border-radius:999px;
  border:1px solid var(--c-line);background:#fff;
  transition:width .2s ease,opacity .2s ease,padding .2s ease;
}
.nav-actions.open .search-box{width:220px;opacity:1;padding:0 16px}
.search-box:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,111,232,.15)}
.burger{display:none;width:40px;height:40px;border-radius:10px;position:relative}
.burger span,.burger::before,.burger::after{
  content:"";position:absolute;left:10px;width:20px;height:2px;border-radius:2px;background:var(--c-text);
  transition:transform .2s ease,opacity .2s ease;
}
.burger span{top:19px}
.burger::before{top:13px}
.burger::after{top:25px}
.burger.on span{opacity:0}
.burger.on::before{transform:translateY(6px) rotate(45deg)}
.burger.on::after{transform:translateY(-6px) rotate(-45deg)}

/* drawer */
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(340px,86vw);background:#fff;z-index:80;
  transform:translateX(100%);transition:transform .25s ease;
  display:flex;flex-direction:column;padding:24px 24px 32px;box-shadow:-12px 0 40px rgba(16,42,80,.12);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-close{width:40px;height:40px;border-radius:10px;font-size:22px;line-height:1;color:var(--c-text-2)}
.drawer-close:hover{background:var(--c-bg-soft)}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:auto}
.drawer-nav a{font-size:18px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--c-line)}
.drawer-nav a:hover{color:var(--c-primary)}
.drawer-mask{position:fixed;inset:0;background:rgba(14,33,56,.42);opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:70}
.drawer-mask.open{opacity:1;visibility:visible}

/* mobile bar */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;height:56px;z-index:65;display:none;
  align-items:center;justify-content:space-between;gap:16px;padding:0 20px;
  background:#fff;border-top:1px solid var(--c-line);box-shadow:0 -6px 16px rgba(16,42,80,.08);
  transform:translateY(100%);transition:transform .25s ease;
}
.mobile-bar.show{transform:translateY(0)}
.mobile-bar a.mb-link{font-size:14px;color:var(--c-text-2)}
.mobile-bar .btn{height:40px;padding:0 20px;font-size:14px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--c-bg-soft);padding:72px 0 64px}
.hero::after{
  content:"";position:absolute;right:-180px;bottom:-240px;width:560px;height:560px;border-radius:50%;
  border:60px solid rgba(29,111,232,.07);pointer-events:none;
}
.chip{
  display:inline-block;padding:6px 14px;border-radius:999px;background:#fff;border:1px solid #CFE0FA;
  color:var(--c-primary-dark);font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero h1{font-size:44px;line-height:1.27;max-width:820px}
.hero-lead{max-width:760px;color:var(--c-text-2);margin-top:20px;font-size:16px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}
.icon-matrix{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:48px}
.icon-matrix li{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:18px 12px;text-align:center;font-size:14px;font-weight:600;color:var(--c-text);
  box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.icon-matrix li:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:#CFE0FA}
.icon-matrix .ic{
  display:flex;align-items:center;justify-content:center;width:38px;height:38px;margin:0 auto 10px;
  border-radius:12px;background:var(--c-soft);color:var(--c-primary);font-size:16px;
}
.status-bar{display:grid;grid-template-columns:repeat(3,1fr);margin-top:40px;padding-top:24px;border-top:1px solid var(--c-line);position:relative;z-index:1}
.status-item{padding:0 24px;border-left:1px solid var(--c-line)}
.status-item:first-child{padding-left:0;border-left:0}
.status-item b{display:block;font-size:15px;color:var(--c-text)}
.status-item span{font-size:14px;color:var(--c-text-2)}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section.soft{background:var(--c-bg-soft)}
.section.blue{background:var(--c-soft)}
.sec-head{margin-bottom:40px;max-width:760px}
.sec-head h2{font-size:32px;line-height:1.38}
.sec-head p{margin-top:12px;color:var(--c-text-2);max-width:62ch}
.sec-head .more{display:inline-block;margin-top:16px;color:var(--c-primary);font-weight:600;font-size:15px}
.sec-head .more:hover{color:var(--c-primary-dark)}

.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:#CFE0FA}

/* metrics */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric{padding:26px 24px}
.metric .m-top{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-text-2)}
.metric .m-top i{width:8px;height:8px;border-radius:3px;background:var(--c-primary);display:inline-block}
.metric .m-num{
  font-size:44px;font-weight:700;line-height:1.1;margin:14px 0 10px;
  font-variant-numeric:tabular-nums;color:var(--c-text);
}
.metric .m-num em{font-style:normal;font-size:18px;color:var(--c-text-3);margin-left:4px;font-weight:600}
.metric p{font-size:14px;color:var(--c-text-2)}
.metric.primary{background:var(--c-soft);border-color:#CFE0FA}
.metric.primary .m-num{color:var(--c-primary-dark)}
.bar{height:6px;border-radius:999px;background:var(--c-line);margin-top:16px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:var(--c-primary)}

/* matrix */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.matrix .card{padding:30px 28px;position:relative}
.matrix .card.wide{grid-column:span 2}
.tag-num{
  position:absolute;top:18px;right:18px;font-size:13px;font-weight:600;
  padding:2px 10px;border-radius:8px;background:var(--c-soft);color:var(--c-primary-dark);
}
.tag-num.acc{background:var(--c-accent);color:#fff}
.matrix h3{font-size:20px;line-height:1.5;margin:6px 0 12px}
.matrix p{font-size:15px;color:var(--c-text-2);max-width:38ch}
.card-link{display:inline-block;margin-top:18px;font-size:14px;font-weight:600;color:var(--c-primary)}
.card-link:hover{color:var(--c-primary-dark)}

/* news */
.news-wrap{display:grid;grid-template-columns:1fr 340px;gap:32px;align-items:start}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-item{padding:20px;display:grid;grid-template-columns:220px 1fr;gap:20px;align-items:flex-start}
.news-item.featured{grid-template-columns:1fr;padding:0;overflow:hidden}
.thumb{aspect-ratio:16/9;border-radius:var(--r-sm);overflow:hidden;background:var(--c-bg-soft)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-item:hover .thumb img,.pick:hover .thumb img{transform:scale(1.04)}
.news-item.featured .thumb{border-radius:var(--r-lg) var(--r-lg) 0 0}
.news-item.featured .ni-body{padding:0 24px 26px}
.ni-body{min-width:0}
.tag{
  display:inline-block;height:24px;line-height:24px;padding:0 10px;border-radius:999px;
  background:var(--c-soft);color:var(--c-primary-dark);font-size:12px;font-weight:600;
}
.news-item h3{font-size:18px;line-height:1.55;margin:10px 0 8px}
.news-item.featured h3{font-size:22px}
.news-item p{font-size:15px;color:var(--c-text-2)}
.meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:12px;font-size:13px;color:var(--c-text-3)}
.news-more{display:inline-block;margin-top:8px;font-weight:600;color:var(--c-primary);font-size:15px}
.news-more:hover{color:var(--c-primary-dark)}
.side{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
.side-card{padding:24px}
.side-card h3{font-size:16px;margin-bottom:16px}
.rank-list{display:flex;flex-direction:column;gap:14px}
.rank-item{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--c-text-2)}
.rank-item b{
  flex:none;width:22px;height:22px;border-radius:7px;background:var(--c-bg-soft);color:var(--c-text-3);
  font-size:12px;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.rank-item:nth-child(1) b,.rank-item:nth-child(2) b,.rank-item:nth-child(3) b{background:var(--c-soft);color:var(--c-primary-dark)}
.rank-item a:hover{color:var(--c-primary)}
.side-cta{padding:24px;border:1px solid #CFE0FA;background:var(--c-soft);border-radius:var(--r-lg)}
.side-cta h3{font-size:16px;margin-bottom:8px}
.side-cta p{font-size:14px;color:var(--c-text-2);margin-bottom:16px}

/* picks */
.picks{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.pick{cursor:pointer}
.pick .thumb{margin-bottom:14px}
.pick h3{font-size:16px;line-height:1.5}
.pick .meta{margin-top:8px}

/* types */
.types{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.type-item{
  display:flex;align-items:center;gap:12px;padding:16px 18px;border-radius:var(--r-md);
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--sh);
  font-size:15px;font-weight:600;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
}
.type-item:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:#CFE0FA;color:var(--c-primary)}
.type-item span.i{
  width:32px;height:32px;border-radius:10px;background:var(--c-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:14px;flex:none;
}

/* topic band */
.topic-band{position:relative;border-radius:24px;overflow:hidden;padding:64px 48px;color:#fff}
.topic-band .bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.topic-band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,33,56,.9) 0%,rgba(14,33,56,.62) 62%,rgba(14,33,56,.42) 100%)}
.topic-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:start}
.topic-inner h2{font-size:30px;line-height:1.4;margin-bottom:16px}
.topic-inner p{color:rgba(255,255,255,.82);font-size:15px;max-width:44ch}
.topic-list{display:flex;flex-direction:column;gap:14px}
.topic-list li{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;border-radius:var(--r-md);background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.18);font-size:15px;transition:background .2s ease;
}
.topic-list li:hover{background:rgba(255,255,255,.2)}
.topic-list em{font-style:normal;font-size:13px;color:rgba(255,255,255,.7);font-variant-numeric:tabular-nums}

/* compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{padding:32px;border-radius:var(--r-lg)}
.compare-col h3{font-size:18px;margin-bottom:18px}
.compare-col.before{background:var(--c-bg-soft);border:1px solid var(--c-line)}
.compare-col.after{background:var(--c-soft);border:1px solid #CFE0FA}
.compare-col li{display:flex;gap:12px;align-items:flex-start;font-size:15px;padding:10px 0;color:var(--c-text-2)}
.compare-col.after li{color:var(--c-text)}
.compare-col li i{
  flex:none;width:20px;height:20px;border-radius:50%;font-size:12px;font-style:normal;
  display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.before li i{background:#E3EBF5;color:var(--c-text-3)}
.after li i{background:var(--c-primary);color:#fff}

/* timeline */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;position:relative;padding-top:8px}
.timeline::before{content:"";position:absolute;top:16px;left:8px;right:8px;height:2px;background:#CFE0FA}
.tl-node{position:relative;padding-top:34px}
.tl-node::before{
  content:"";position:absolute;top:8px;left:0;width:18px;height:18px;border-radius:50%;
  background:#fff;border:4px solid var(--c-primary);
}
.tl-node b{display:block;font-size:15px;color:var(--c-primary-dark);font-variant-numeric:tabular-nums;margin-bottom:6px}
.tl-node p{font-size:14px;color:var(--c-text-2)}

/* guard */
.guard{display:grid;grid-template-columns:repeat(5,1fr)}
.guard-item{padding:0 22px;border-left:1px solid var(--c-line)}
.guard-item:first-child{padding-left:0;border-left:0}
.guard-item .gi{
  width:38px;height:38px;border-radius:12px;background:var(--c-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:15px;
}
.guard-item h3{font-size:15px;margin-bottom:6px}
.guard-item p{font-size:14px;color:var(--c-text-2)}

/* scenes */
.scenes{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scene{overflow:hidden;padding:0;display:flex;flex-direction:column}
.scene .stripe{height:6px;background:var(--c-primary)}
.scene:nth-child(2) .stripe{background:var(--c-accent)}
.scene:nth-child(3) .stripe{background:var(--c-ok)}
.scene:nth-child(4) .stripe{background:var(--c-primary-dark)}
.scene .sb{padding:24px;display:flex;flex-direction:column;flex:1}
.scene h3{font-size:17px;margin-bottom:12px}
.scene li{font-size:14px;color:var(--c-text-2);padding:5px 0;padding-left:16px;position:relative}
.scene li::before{content:"";position:absolute;left:0;top:13px;width:6px;height:6px;border-radius:2px;background:#CFE0FA}
.scene .arrow{
  margin-top:auto;padding-top:18px;font-size:14px;font-weight:600;color:var(--c-primary);
}
.scene:hover .arrow{color:var(--c-primary-dark)}

/* device */
.device{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.device h2{font-size:32px;line-height:1.38;margin-bottom:16px}
.device p.lead{color:var(--c-text-2);margin-bottom:24px}
.device ul{display:flex;flex-direction:column;gap:16px;margin-bottom:32px}
.device li{display:flex;gap:12px;align-items:flex-start}
.device li i{
  flex:none;width:24px;height:24px;border-radius:8px;background:var(--c-soft);color:var(--c-primary);
  font-style:normal;font-size:13px;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.device li b{display:block;font-size:15px}
.device li span{font-size:14px;color:var(--c-text-2)}
.device-img{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);border:1px solid var(--c-line);aspect-ratio:4/3}
.device-img img{width:100%;height:100%;object-fit:cover}

/* reviews */
.reviews{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.review{padding:26px 24px;display:flex;flex-direction:column}
.avatar{
  width:44px;height:44px;border-radius:50%;background:var(--c-soft);color:var(--c-primary-dark);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin-bottom:14px;
}
.review .name{font-size:15px;font-weight:600}
.stars{color:var(--c-accent);font-size:13px;letter-spacing:2px;margin:6px 0 10px}
.review p{font-size:14px;color:var(--c-text-2)}
.review .pill{
  margin-top:auto;display:inline-block;margin-top:16px;font-size:12px;padding:4px 10px;
  border-radius:999px;background:var(--c-bg-soft);color:var(--c-text-2);align-self:flex-start;
}
.review.stat{background:var(--c-primary);border-color:var(--c-primary);color:#fff;justify-content:center}
.review.stat b{font-size:40px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-1px}
.review.stat p{color:rgba(255,255,255,.86);font-size:14px;margin-top:10px}

/* plans */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{padding:32px 28px;position:relative;display:flex;flex-direction:column}
.plan.recommend{border:1.5px solid var(--c-primary);transform:scale(1.02);z-index:1}
.plan-tag{
  position:absolute;top:-13px;left:28px;background:var(--c-accent);color:#fff;
  font-size:13px;font-weight:600;padding:3px 12px;border-radius:8px;
}
.plan h3{font-size:18px;margin-bottom:8px}
.price{font-size:40px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-1px;margin:8px 0 4px}
.price em{font-style:normal;font-size:16px;color:var(--c-text-3);font-weight:600;margin-left:4px}
.plan .desc{font-size:14px;color:var(--c-text-2);margin-bottom:20px}
.plan ul{display:flex;flex-direction:column;gap:12px;margin-bottom:26px}
.plan li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);align-items:flex-start}
.plan li i{font-style:normal;color:var(--c-ok);font-weight:700}
.plan li.off{color:var(--c-text-3)}
.plan li.off i{color:var(--c-text-3)}
.plan .btn{margin-top:auto;width:100%}

/* faq */
.faq-quick{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}
.quick-btn{
  padding:14px 18px;border-radius:999px;background:#fff;border:1px solid var(--c-line);
  font-size:15px;font-weight:600;color:var(--c-text);box-shadow:var(--sh);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
  text-align:left;
}
.quick-btn:hover{background:var(--c-soft);color:var(--c-primary-dark);border-color:#CFE0FA}
.quick-btn.on{background:var(--c-soft);color:var(--c-primary-dark);border-color:var(--c-primary)}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh);overflow:hidden;position:relative}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);
  transform:scaleY(0);transform-origin:top;transition:transform .2s ease;
}
.faq-item.open::before{transform:scaleY(1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;text-align:left;color:var(--c-text);
}
.faq-q:hover{color:var(--c-primary-dark)}
.faq-icon{flex:none;color:var(--c-primary);transition:transform .2s ease;font-size:14px}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--c-text-2);max-width:70ch}
.faq-note{margin-top:20px;font-size:14px;color:var(--c-text-3)}

/* form */
.formwrap{display:grid;grid-template-columns:55% 45%;gap:40px;align-items:start}
.form-card{
  background:#fff;border-radius:var(--r-lg);border:1px solid var(--c-line);
  box-shadow:0 10px 30px rgba(16,42,80,.08);padding:32px;
}
.form-card h2{font-size:26px;line-height:1.4;margin-bottom:8px}
.form-card > p{font-size:15px;color:var(--c-text-2);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);background:#fff;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:104px;padding:12px 16px;resize:vertical;line-height:1.6}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,111,232,.15);
}
.field .err{display:none;font-size:13px;color:#E5484D;margin-top:6px}
.field.invalid input,.field.invalid textarea,.field.invalid select{border-color:#E5484D}
.field.invalid .err{display:block}
.form-card .btn{width:100%}
.trust-card{padding:28px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh)}
.trust-card h3{font-size:17px;margin-bottom:18px}
.trust-item{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--c-line)}
.trust-item:last-of-type{border-bottom:0}
.trust-item i{
  flex:none;width:24px;height:24px;border-radius:8px;background:var(--c-soft);color:var(--c-primary);
  font-style:normal;font-size:13px;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.trust-item b{display:block;font-size:14px}
.trust-item span{font-size:13px;color:var(--c-text-2)}
.trust-img{margin-top:20px;border-radius:var(--r-sm);overflow:hidden;aspect-ratio:16/9}
.trust-img img{width:100%;height:100%;object-fit:cover}
.trust-time{margin-top:18px;font-size:13px;color:var(--c-text-2)}

/* footer */
.site-footer{background:var(--c-text);color:rgba(255,255,255,.78);padding:64px 0 0;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.foot-brand .logo{color:#fff;margin-bottom:16px}
.foot-brand p{font-size:14px;color:rgba(255,255,255,.66);max-width:34ch;margin-bottom:20px}
.socials{display:flex;gap:10px}
.socials span{
  width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:center;font-size:13px;color:#fff;
  transition:background .2s ease;cursor:pointer;
}
.socials span:hover{background:var(--c-primary)}
.foot-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.foot-col a,.foot-col li{display:block;font-size:14px;color:rgba(255,255,255,.7);padding:7px 0;transition:color .2s ease}
.foot-col a:hover{color:#fff}
.foot-sub input{
  width:100%;height:44px;padding:0 14px;border-radius:999px;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;margin-bottom:12px;
}
.foot-sub input::placeholder{color:rgba(255,255,255,.5)}
.foot-sub input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,111,232,.25)}
.foot-sub .btn{width:100%;height:44px;font-size:15px}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.55);
}
.foot-bottom .links{display:flex;gap:20px}
.foot-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .main-nav{display:none}
  .burger{display:block}
  .search-box{display:none}
  .nav-actions .btn-primary{display:none}
  .hero h1{font-size:36px}
  .icon-matrix{grid-template-columns:repeat(3,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .matrix{grid-template-columns:repeat(2,1fr)}
  .matrix .card.wide{grid-column:span 2}
  .news-wrap{grid-template-columns:1fr}
  .side{position:static}
  .picks{grid-template-columns:repeat(2,1fr)}
  .types{grid-template-columns:repeat(3,1fr)}
  .topic-inner{grid-template-columns:1fr;gap:32px}
  .timeline{grid-template-columns:repeat(2,1fr);gap:28px 24px}
  .timeline::before{display:none}
  .tl-node{padding-top:0;padding-left:32px}
  .tl-node::before{top:4px;left:0}
  .guard{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .guard-item:nth-child(odd){padding-left:0;border-left:0}
  .scenes{grid-template-columns:repeat(2,1fr)}
  .device{grid-template-columns:1fr;gap:36px}
  .reviews{grid-template-columns:repeat(2,1fr)}
  .plans{grid-template-columns:1fr;gap:20px}
  .plan.recommend{transform:none}
  .formwrap{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .mobile-bar{display:flex}
}
@media (max-width:768px){
  .section{padding:48px 0}
  .hero{padding:48px 0}
  .hero h1{font-size:30px;line-height:1.35}
  .hero-lead{font-size:15px}
  .icon-matrix{grid-template-columns:repeat(2,1fr)}
  .status-bar{grid-template-columns:1fr;gap:16px;padding-top:20px}
  .status-item{padding:0;border-left:0}
  .sec-head h2{font-size:24px;line-height:1.4}
  .sec-head{margin-bottom:28px}
  .metric .m-num{font-size:36px}
  .matrix{grid-template-columns:1fr}
  .matrix .card.wide{grid-column:span 1}
  .news-item{grid-template-columns:1fr;padding:16px}
  .picks{grid-template-columns:1fr}
  .types{grid-template-columns:repeat(2,1fr)}
  .topic-band{padding:40px 24px;border-radius:18px}
  .topic-inner h2{font-size:24px}
  .compare{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr;gap:24px}
  .guard{grid-template-columns:1fr;gap:24px}
  .guard-item{padding-left:0;border-left:0}
  .scenes{grid-template-columns:repeat(2,1fr)}
  .device h2{font-size:24px}
  .reviews{grid-template-columns:1fr}
  .faq-quick{grid-template-columns:repeat(2,1fr)}
  .form-card{padding:24px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .hero h1{font-size:26px}
  .icon-matrix{grid-template-columns:1fr 1fr;gap:12px}
  .metrics{grid-template-columns:1fr}
  .types{grid-template-columns:1fr 1fr}
  .type-item{padding:14px 12px;font-size:14px;gap:8px}
  .type-item span.i{width:28px;height:28px;border-radius:9px}
  .scenes{grid-template-columns:1fr}
  .faq-quick{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .form-card h2{font-size:22px}
  .price{font-size:34px}
  .review.stat b{font-size:34px}
}

/* roulang page: index */
:root{
--pri:#1B54D6;--pri-d:#1240A8;--acc:#FFB020;--ok:#12B886;--bad:#E5484D;
--bg:#F5F8FD;--card:#FFFFFF;--line:#E4EAF3;--tx:#0E1A2B;--tx2:#5A6B85;
--r:16px;--r-sm:12px;
--sh:0 2px 8px rgba(16,40,90,.06);
--sh-c:0 10px 30px rgba(16,40,90,.08);
--sh-h:0 16px 40px rgba(16,40,90,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.75;color:var(--tx);background:var(--card)}
body.lock{overflow:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,p,ul{margin:0;padding:0}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 40px}
.ico{width:22px;height:22px;flex:0 0 auto;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;transition:background .2s ease,transform .2s ease,box-shadow .2s ease}
.btn-pri{background:var(--pri);color:#fff;box-shadow:0 6px 16px rgba(27,84,214,.22)}
.btn-pri:hover{background:var(--pri-d);transform:translateY(-1px)}
.btn-pri:active{background:var(--pri-d);transform:translateY(0)}
.btn-pri:focus-visible{outline:2px solid var(--pri-d);outline-offset:3px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--pri)}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover{text-decoration:underline}
.link-arrow:hover span{transform:translateX(4px)}
/* header */
.hd{position:fixed;left:0;right:0;top:0;z-index:70;transition:background .25s ease,box-shadow .25s ease}
.hd.solid{background:#fff;box-shadow:0 1px 0 var(--line),0 6px 20px rgba(16,40,90,.06)}
.hd-in{display:flex;align-items:center;height:64px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700}
.logo-mark{width:26px;height:26px;border-radius:8px;background:var(--pri);position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;left:10px;top:7px;border-left:8px solid #fff;border-top:6px solid transparent;border-bottom:6px solid transparent}
.nav{display:flex;align-items:center;gap:26px;margin-left:auto;font-size:15px}
.nav a{color:var(--tx2);padding:6px 0;position:relative;transition:color .2s ease}
.nav a:hover{color:var(--pri)}
.nav a.on{color:var(--pri);font-weight:600}
.nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--pri)}
.hd-act{display:flex;align-items:center;gap:12px;margin-left:24px}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--tx2);display:grid;place-items:center;transition:color .2s,border-color .2s}
.icon-btn:hover{color:var(--pri);border-color:var(--pri)}
.burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;place-items:center}
.burger span{display:block;width:18px;height:2px;background:var(--tx);position:relative;border-radius:2px}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--tx);border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.nav-close{display:none}
.mask{position:fixed;inset:0;background:rgba(14,26,43,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:65}
.mask.show{opacity:1;visibility:visible}
/* hero */
.hero{position:relative;overflow:hidden;background:var(--bg);padding:132px 0 64px}
.hero-bg{position:absolute;inset:0;background:url(/assets/images/c0357c498ba25686.jpg) center/cover no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(245,248,253,.95),rgba(245,248,253,.99))}
.hero-in{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:#E8EFFD;color:var(--pri);font-size:13px;font-weight:600}
h1{font-size:clamp(28px,4.4vw,46px);line-height:1.25;font-weight:700;margin-top:16px;letter-spacing:-.5px}
.lead{color:var(--tx2);font-size:16px;margin-top:18px;max-width:54ch}
.hero-act{display:flex;align-items:center;gap:28px;margin-top:30px;flex-wrap:wrap}
.hero-panel{position:relative}
.hero-float{position:absolute;right:-6px;top:-20px;z-index:2;display:flex;flex-direction:column;gap:2px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-c);padding:12px 18px}
.hero-float b{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.2}
.hero-float span{font-size:12px;color:var(--tx2)}
.hero-float i{font-size:12px;font-style:normal;font-weight:600;color:var(--ok)}
.hg{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.hg-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 14px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease}
.hg-item:hover{transform:translateY(-2px);box-shadow:var(--sh-h)}
.hg-item .ico{color:var(--pri)}
.hg-item b{display:block;font-size:14px;margin-top:10px}
.hg-item span{display:block;font-size:12px;color:var(--tx2);line-height:1.5}
.status{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px}
.status span{font-size:12px;color:var(--tx2);background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px}
.status b{color:var(--pri);font-variant-numeric:tabular-nums}
/* sections */
.sec{padding:80px 0}
.sec-alt{background:var(--bg)}
.sec-hd{margin-bottom:32px}
.sec-hd h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.3px}
.sec-hd p{color:var(--tx2);font-size:15px;margin-top:10px;max-width:64ch}
/* kpi */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.kpi{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px 24px 24px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease}
.kpi::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--pri)}
.kpi:hover{transform:translateY(-2px);box-shadow:var(--sh-h)}
.kpi-n{font-size:42px;font-weight:700;line-height:1.1;letter-spacing:-1.5px;font-variant-numeric:tabular-nums}
.kpi-n i{font-style:normal;font-size:20px;color:var(--pri);margin-left:2px}
.kpi p{margin-top:10px;font-size:14px;color:var(--tx2)}
.trend{display:inline-flex;align-items:center;gap:4px;margin-top:10px;font-size:12px;font-weight:600}
.trend.up{color:var(--ok)}
.trend.down{color:var(--bad)}
/* matrix */
.matrix{display:grid;grid-template-columns:1.25fr 1fr 1fr;grid-auto-rows:minmax(148px,auto);gap:24px}
.mcard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease}
.mcard:hover{transform:translateY(-2px);box-shadow:var(--sh-h)}
.mcard .ico{color:var(--pri);width:26px;height:26px}
.mcard h3{font-size:18px;font-weight:700;margin-top:14px}
.mcard p{font-size:14px;color:var(--tx2);margin-top:8px;line-height:1.7}
.mcard .go{margin-top:auto;padding-top:16px;display:flex;justify-content:flex-end;color:var(--pri);font-size:18px;transition:transform .2s ease}
.mcard:hover .go{transform:translateX(4px)}
.mcard.big{grid-row:span 2;justify-content:flex-start;background:linear-gradient(165deg,#FFFFFF 0%,#EEF3FE 100%)}
.mcard.big h3{font-size:20px}
.mcard.big .mlist{margin-top:18px;display:grid;gap:10px}
.mcard.big .mlist li{position:relative;padding-left:20px;font-size:14px;color:var(--tx2)}
.mcard.big .mlist li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--pri);opacity:.55}
/* topics */
.chips{display:flex;gap:12px;overflow-x:auto;padding-bottom:10px;margin-bottom:26px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 20px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--tx2);font-size:14px;transition:all .2s ease}
.chip:hover{color:var(--pri);border-color:var(--pri)}
.chip.on{background:var(--pri);border-color:var(--pri);color:#fff;font-weight:600}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease}
.tcard:hover{transform:translateY(-2px);box-shadow:var(--sh-h)}
.thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--bg)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.tcard:hover .thumb img{transform:scale(1.04)}
.badge{position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;background:var(--acc);color:#3A2600;font-size:12px;font-weight:600}
.tcard-b{padding:18px 20px 22px}
.tcard-b h3{font-size:18px;font-weight:700}
.tcard-b p{font-size:14px;color:var(--tx2);margin-top:6px}
/* compare */
.cmp{position:relative;display:grid;grid-template-columns:1fr 1fr;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--sh-c);overflow:hidden}
.cmp-col{padding:34px 32px}
.cmp-col+.cmp-col{border-left:1px dashed var(--line);background:linear-gradient(180deg,#F7FAFF,#fff)}
.cmp-col h3{font-size:17px;font-weight:700;margin-bottom:18px}
.cmp-list li{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--tx2)}
.cmp-list li:last-child{border-bottom:0}
.cmp-list b{font-size:15px;font-weight:700;color:var(--tx);font-variant-numeric:tabular-nums}
.cmp-hl .cmp-list b{color:var(--pri)}
.cmp-vs{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:52px;height:52px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--sh-c);display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--pri);letter-spacing:.5px}
/* timeline */
.tl{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:8px}
.tl::before{content:"";position:absolute;left:0;right:0;top:30px;height:2px;background:var(--line)}
.tl-item{position:relative}
.tl-dot{position:relative;z-index:1;width:44px;height:44px;border-radius:50%;background:#fff;border:2px solid var(--pri);color:var(--pri);display:grid;place-items:center;font-size:15px;font-weight:700;font-variant-numeric:tabular-nums}
.tl-y{margin-top:14px;font-size:14px;font-weight:700;color:var(--pri);font-variant-numeric:tabular-nums}
.tl-item p{font-size:14px;color:var(--tx2);margin-top:6px;max-width:18ch}
/* scene */
.scene{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.scene-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.stag{display:inline-flex;align-items:center;height:44px;padding:0 22px;border-radius:999px;border:1px solid var(--pri);background:#fff;color:var(--pri);font-size:14px;font-weight:500;transition:all .2s ease}
.stag:hover{background:#EEF3FE}
.stag.on{background:var(--pri);color:#fff}
.scene-img{border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-c);aspect-ratio:4/3}
.scene-img img{width:100%;height:100%;object-fit:cover}
/* news */
.news{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden}
.nrow{display:grid;grid-template-columns:56px 1fr 32px;gap:20px;align-items:center;padding:16px 24px;border-bottom:1px solid var(--line);transition:background .2s ease}
.nrow:last-child{border-bottom:0}
.nrow:hover{background:var(--bg)}
.ndate{background:#EEF3FE;border-radius:10px;text-align:center;padding:7px 0}
.ndate b{display:block;font-size:18px;font-weight:700;color:var(--pri);line-height:1.2;font-variant-numeric:tabular-nums}
.ndate span{display:block;font-size:11px;color:var(--tx2)}
.nrow h3{font-size:16px;font-weight:600}
.nrow p{font-size:14px;color:var(--tx2);margin-top:2px}
.narrow{color:var(--pri);font-size:18px;text-align:right;transition:transform .2s ease}
.nrow:hover .narrow{transform:translateX(4px)}
.news-more{margin-top:20px}
/* guard */
.guard{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.gitem{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease}
.gitem:hover{transform:translateY(-2px);box-shadow:var(--sh-h)}
.gitem .ico{color:var(--pri)}
.gitem b{display:block;font-size:15px;font-weight:700}
.gitem span{display:block;font-size:13px;color:var(--tx2);margin-top:6px;line-height:1.6}
/* multi */
.multi{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}
.multi-img{border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-c);aspect-ratio:4/3}
.multi-img img{width:100%;height:100%;object-fit:cover}
.mlist li{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.mlist li:last-child{border-bottom:0}
.mnum{flex:0 0 32px;height:32px;border-radius:50%;background:#EEF3FE;color:var(--pri);display:grid;place-items:center;font-size:14px;font-weight:700}
.mlist b{display:block;font-size:15px;font-weight:700}
.mlist p{font-size:14px;color:var(--tx2);margin-top:2px}
.compat{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.compat span{font-size:13px;color:var(--tx2);background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 14px}
/* reviews */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rev{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh)}
.rev::before{content:"“";position:absolute;right:22px;top:4px;font-family:Georgia,serif;font-size:52px;line-height:1;color:#E4EAF3}
.stars{color:var(--acc);font-size:14px;letter-spacing:2px}
.rev p{font-size:15px;margin-top:14px;line-height:1.75}
.rev-meta{display:flex;justify-content:space-between;gap:12px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--tx2)}
/* quick */
.quick{display:grid;grid-template-columns:.85fr 2.15fr;gap:40px;align-items:start}
.quick-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.qcard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--sh)}
.qcard b{display:block;font-size:15px;font-weight:700;line-height:1.5}
.qcard p{font-size:14px;color:var(--tx2);margin-top:10px}
/* faq */
.faq{display:grid;grid-template-columns:1fr 2fr;gap:48px;align-items:start}
.faq-aside p{font-size:15px;color:var(--tx2);margin-top:12px}
.faq-aside .link-arrow{margin-top:20px}
.acc-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.acc-btn{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;height:56px;padding:0 20px;text-align:left;font-size:15px;font-weight:600}
.acc-btn:hover{color:var(--pri)}
.acc-ico{position:relative;flex:0 0 18px;width:18px;height:18px;transition:transform .2s ease}
.acc-ico::before,.acc-ico::after{content:"";position:absolute;background:var(--pri);border-radius:2px}
.acc-ico::before{left:0;top:8px;width:18px;height:2px}
.acc-ico::after{left:8px;top:0;width:2px;height:18px}
.acc-item.open .acc-ico{transform:rotate(45deg)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .25s ease}
.acc-body{padding:0 20px 22px;font-size:15px;color:var(--tx2);max-width:68ch}
/* cta */
.ctaband{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:start}
.cta-tips{margin-top:24px;display:grid;gap:14px}
.cta-tips li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--tx2)}
.cta-tips li .ico{color:var(--pri);width:20px;height:20px;margin-top:2px}
.cta-info{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--tx2);line-height:2}
.cta-info b{color:var(--tx)}
.formcard{background:#fff;border-radius:20px;padding:32px;box-shadow:var(--sh-c)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.inp{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:12px;background:#fff;font:inherit;font-size:15px;color:var(--tx);transition:border-color .2s ease,box-shadow .2s ease}
.inp::placeholder{color:#9AA9BF}
.inp:focus{outline:none;border-color:var(--pri);box-shadow:0 0 0 2px rgba(27,84,214,.16)}
select.inp{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8'><path d='M1 1l5 5 5-5' fill='none' stroke='%235A6B85' stroke-width='1.6' stroke-linecap='round'/></svg>");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
textarea.inp{height:auto;min-height:104px;padding:12px 14px;line-height:1.6;resize:vertical}
.formcard .btn{width:100%;margin-top:6px}
.form-note{font-size:12px;color:var(--tx2);margin-top:12px;text-align:center}
/* footer */
.ft{background:var(--bg);border-top:1px solid var(--line);padding:56px 0 0}
.ft-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.ft-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700}
.ft-col h3{font-size:15px;font-weight:700;margin-bottom:16px}
.ft-col p,.ft-col a{display:block;font-size:14px;color:var(--tx2);line-height:2}
.ft-col a:hover{color:var(--pri)}
.ft-brand-desc{font-size:14px;color:var(--tx2);margin-top:14px;max-width:34ch;line-height:1.8}
.ft-bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);padding:20px 0;font-size:13px;color:var(--tx2)}
@media (max-width:1024px){
.container{padding:0 28px}
.sec{padding:64px 0}
.hero{padding:116px 0 52px}
.hero-in{grid-template-columns:1fr;gap:44px}
.kpi-grid{grid-template-columns:repeat(2,1fr)}
.matrix{grid-template-columns:1fr 1fr}
.mcard.big{grid-row:auto;grid-column:span 2}
.topic-grid{grid-template-columns:repeat(2,1fr)}
.scene{grid-template-columns:1fr;gap:36px}
.multi{grid-template-columns:1fr;gap:36px}
.guard{grid-template-columns:repeat(2,1fr)}
.quick{grid-template-columns:1fr;gap:28px}
.quick-list{grid-template-columns:repeat(3,1fr)}
.faq{grid-template-columns:1fr;gap:28px}
.ctaband{grid-template-columns:1fr;gap:36px}
.ft-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
.nav{position:fixed;top:0;right:0;width:82vw;max-width:340px;height:100vh;background:#fff;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:76px 24px 24px;transform:translateX(100%);transition:transform .28s ease;box-shadow:-8px 0 30px rgba(16,40,90,.14);z-index:75;overflow-y:auto}
.nav.open{transform:translateX(0)}
.nav a{height:48px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-size:16px;color:var(--tx)}
.nav a.on{color:var(--pri)}
.nav a.on::after{display:none}
.nav-close{display:grid;place-items:center;position:absolute;top:18px;right:18px;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:20px;line-height:1;color:var(--tx2)}
.hd-act .btn{display:none}
.burger{display:grid}
.hd-in{height:56px}
.hero{padding:104px 0 44px}
.topic-grid{grid-template-columns:1fr}
.tl{grid-template-columns:1fr;gap:26px}
.tl::before{left:21px;right:auto;top:0;bottom:0;width:2px;height:auto}
.tl-item{display:grid;grid-template-columns:44px 1fr;column-gap:16px;align-items:start}
.tl-dot{grid-row:span 2}
.tl-y{margin-top:6px}
.tl-item p{margin-top:0;max-width:none}
.cmp{grid-template-columns:1fr}
.cmp-col+.cmp-col{border-left:0;border-top:1px dashed var(--line)}
.cmp-vs{position:static;transform:none;margin:0 auto;width:44px;height:44px}
.quick-list{grid-template-columns:1fr}
.rev-grid{grid-template-columns:1fr}
.hero-float{position:static;display:inline-flex;flex-direction:row;align-items:center;gap:10px;margin-bottom:16px}
.nrow{grid-template-columns:48px 1fr 24px;gap:14px;padding:14px 16px}
.ft-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
.container{padding:0 20px}
.sec{padding:48px 0}
h1{font-size:28px}
.sec-hd h2{font-size:24px}
.kpi-n{font-size:30px;letter-spacing:-.5px}
.kpi{padding:22px 18px 20px}
.kpi-grid{gap:16px}
.matrix{grid-template-columns:1fr;gap:16px}
.mcard.big{grid-column:auto}
.hg{grid-template-columns:repeat(2,1fr)}
.guard{grid-template-columns:1fr}
.ft-grid{grid-template-columns:1fr;gap:28px}
.cmp-col{padding:24px 20px}
.formcard{padding:24px 20px}
.hero-act{gap:18px}
.btn{height:44px;padding:0 22px}
}