/* roulang page: index */
:root{
  --bg:#F5F7FB;--surface:#FFFFFF;--surface-2:#EDF2FA;--line:#DDE5F1;
  --ink:#0E1B33;--ink-2:#4A5A75;--ink-3:#8494AC;
  --brand:#1E5FD8;--brand-800:#1648A8;--brand-50:#E3EDFD;
  --accent:#F97316;--accent-800:#EA6A0B;--ok:#12A594;
  --r-s:8px;--r-m:12px;--r-l:18px;--pill:999px;
  --sd-1:0 1px 2px rgba(16,32,64,.06),0 1px 3px rgba(16,32,64,.04);
  --sd-2:0 6px 20px -6px rgba(16,32,64,.14);
  --sd-3:0 18px 48px -18px rgba(16,32,64,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.85;background:var(--bg);color:var(--ink);overflow-x:hidden;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button,input,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.tnum{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1232px;margin:0 auto;padding:0 16px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:100px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.sec-title{font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.sec-sub{margin-top:8px;color:var(--ink-2);font-size:15px;max-width:680px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:500;min-height:44px}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.scrolled{box-shadow:var(--sd-1)}
.nav-wrap{display:flex;align-items:center;gap:16px;height:60px}
@media(min-width:1024px){.nav-wrap{height:72px;gap:20px}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;box-shadow:var(--sd-1)}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
@media(min-width:1024px){.brand-text{font-size:18px}}
.nav-links{display:none;align-items:center;gap:4px;margin-left:10px}
.nav-link{padding:9px 14px;border-radius:var(--pill);font-size:16px;font-weight:500;color:var(--ink-2);white-space:nowrap;transition:color .18s ease,background .18s ease}
.nav-link:hover{color:var(--brand);background:var(--brand-50)}
.nav-link.active{color:var(--brand);background:var(--brand-50)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:none;align-items:center;gap:8px;height:44px;width:220px;padding:0 14px;border:1px solid var(--line);border-radius:var(--pill);background:var(--surface-2);transition:width .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease}
.search-box:focus-within{width:260px;border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-50);background:#fff}
.search-box i{color:var(--ink-3);font-size:14px}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px}
.nav-cta{display:none}
.menu-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-m);border:1px solid var(--line);color:var(--ink);font-size:17px;transition:.18s ease}
.menu-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-50)}
@media(min-width:1024px){
  .nav-links{display:flex}
  .search-box{display:flex}
  .nav-cta{display:inline-flex}
  .menu-btn{display:none}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--pill);font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sd-1)}
.btn-accent:hover{background:var(--accent-800);transform:translateY(-1px);box-shadow:var(--sd-2)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-50)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- drawer ---------- */
.overlay{position:fixed;inset:0;background:rgba(14,27,51,.45);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:70}
.overlay.show{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:#fff;z-index:80;transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;box-shadow:var(--sd-3)}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:42px;height:42px;border-radius:var(--r-m);display:flex;align-items:center;justify-content:center;color:var(--ink-2);font-size:17px}
.drawer-close:hover{background:var(--surface-2)}
.drawer-body{flex:1;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:6px}
.drawer-link{display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:var(--r-m);font-size:16px;font-weight:500;color:var(--ink-2)}
.drawer-link.active{background:var(--brand-50);color:var(--brand)}
.drawer-search{display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--pill);background:var(--surface-2);margin-bottom:12px}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}
@media(min-width:1024px){.drawer,.overlay{display:none}}

/* ---------- hero ---------- */
.hero{position:relative;display:flex;align-items:center;background:#0E1B33;min-height:440px;overflow:hidden}
@media(min-width:1024px){.hero{min-height:590px}}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center right;background-repeat:no-repeat}
.hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,27,51,.92) 0%,rgba(14,27,51,.84) 46%,rgba(14,27,51,.74) 100%)}
@media(min-width:1024px){
  .hero-mask{background:linear-gradient(90deg,rgba(14,27,51,.95) 0%,rgba(14,27,51,.88) 34%,rgba(14,27,51,.42) 56%,rgba(14,27,51,0) 80%)}
}
.hero-inner{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;max-width:700px}
@media(min-width:1024px){.hero-inner{padding-top:80px;padding-bottom:80px}}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--pill);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#fff;font-size:13px;font-weight:500}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(18,165,148,.25)}
.hero h1{margin-top:20px;color:#fff;font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.2;letter-spacing:-.01em;max-width:620px}
.hero-sub{margin-top:16px;color:rgba(255,255,255,.85);font-size:clamp(15px,1.4vw,18px);line-height:1.7;max-width:540px}
.hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.hero-tags{display:flex;flex-wrap:wrap;margin-top:36px}
.hero-tags span{display:flex;align-items:center;gap:8px;padding:6px 18px;border-left:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.9);font-size:14px}
.hero-tags span:first-child{padding-left:0;border-left:0}
.hero-tags b{color:#fff;font-weight:600}
@media(max-width:639px){.hero-tags span{padding:6px 12px;font-size:13px}}

/* ---------- cards ---------- */
.card{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sd-1);overflow:hidden;transition:transform .18s ease-out,box-shadow .18s ease-out}
.card:hover{transform:translateY(-4px);box-shadow:var(--sd-2)}
.card-media{position:relative;aspect-ratio:16/9;background:var(--brand-50);overflow:hidden;display:block}
.card-media::after{content:"\f03e";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#A9C0E8;font-size:26px;z-index:0}
.card-media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.badge{position:absolute;top:12px;left:12px;z-index:2;padding:4px 10px;border-radius:var(--pill);background:rgba(14,27,51,.76);color:#fff;font-size:12px;font-weight:500;line-height:1.5}
.badge-right{left:auto;right:12px}
.rank-num{position:absolute;left:14px;top:6px;z-index:3;font-size:52px;font-weight:800;line-height:1;font-style:italic;color:transparent;-webkit-text-stroke:2px rgba(255,255,255,.95);text-shadow:0 2px 12px rgba(14,27,51,.5)}
.card-body{display:flex;flex-direction:column;gap:8px;flex:1;padding:18px 20px 20px}
.card-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a:hover{color:var(--brand)}
.card-desc{font-size:14px;line-height:1.75;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);flex-wrap:wrap;margin-top:auto;padding-top:6px}
.chip{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--pill);background:var(--brand-50);color:var(--brand);font-size:12px;font-weight:500}

/* ---------- rail ---------- */
.rail-wrap{position:relative}
.rail-wrap::after{content:"";position:absolute;top:0;right:0;bottom:18px;width:64px;background:linear-gradient(90deg,rgba(245,247,251,0),var(--bg));pointer-events:none}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x proximity;padding:4px 4px 16px;scrollbar-width:none;-ms-overflow-style:none}
.rail::-webkit-scrollbar{display:none}
.rail-card{flex:0 0 272px;scroll-snap-align:start}
@media(min-width:768px){.rail-card{flex:0 0 288px}}
.rail-more{flex:0 0 220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;border:2px dashed var(--line);border-radius:var(--r-l);color:var(--ink-2);font-weight:500;font-size:15px;background:transparent;transition:.18s ease;min-height:230px}
.rail-more:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-50)}
.rail-more i{font-size:20px}

/* ---------- grids ---------- */
.rank-grid{display:grid;gap:22px;grid-template-columns:1fr}
@media(min-width:640px){.rank-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.rank-grid{grid-template-columns:repeat(4,1fr)}}
.tab-grid{display:grid;gap:22px;grid-template-columns:1fr}
@media(min-width:640px){.tab-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.tab-grid{grid-template-columns:repeat(3,1fr)}}
.steps{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:26px 24px;box-shadow:var(--sd-1);transition:transform .18s ease-out,box-shadow .18s ease-out}
.step:hover{transform:translateY(-4px);box-shadow:var(--sd-2)}
.step-no{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--r-m);background:var(--brand-50);color:var(--brand);font-weight:700;font-size:17px;margin-bottom:16px;font-variant-numeric:tabular-nums}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step p{font-size:15px;color:var(--ink-2);line-height:1.8}

/* ---------- tabs ---------- */
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.tab{min-height:44px;padding:9px 20px;border-radius:var(--pill);border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:14px;font-weight:500;transition:.18s ease}
.tab:hover{border-color:var(--brand);color:var(--brand)}
.tab.active{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- news ---------- */
.news-list{display:grid;gap:16px}
.news-item{display:flex;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:18px;box-shadow:var(--sd-1);transition:transform .18s ease-out,box-shadow .18s ease-out}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--sd-2)}
.news-thumb{display:none;position:relative;flex:0 0 224px;aspect-ratio:16/9;border-radius:var(--r-m);overflow:hidden;background:var(--brand-50)}
.news-thumb::after{content:"\f03e";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#A9C0E8;font-size:22px}
.news-thumb img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
@media(min-width:768px){.news-thumb{display:block}}
.news-main{flex:1;min-width:0;display:flex;flex-direction:column}
.news-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--brand)}
.news-desc{margin-top:8px;font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:12px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);padding-top:0}
.empty-card{background:var(--surface-2);border:1px dashed var(--line);border-radius:var(--r-l);padding:52px 24px;text-align:center;color:var(--ink-2)}
.empty-card i{display:block;font-size:26px;color:var(--brand);margin-bottom:14px}
.empty-card p{font-size:15px}
.empty-card .btn{margin-top:20px}

/* ---------- faq ---------- */
.faq{max-width:920px;margin:0 auto;display:grid;gap:14px}
.acc{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);transition:box-shadow .2s ease}
.acc.open{box-shadow:var(--sd-1)}
.acc-head{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;text-align:left;font-size:16px;font-weight:600;line-height:1.6;color:var(--ink)}
.acc-icon{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:12px;transition:transform .22s ease,background .22s ease,color .22s ease,border-color .22s ease}
.acc.open .acc-icon{transform:rotate(180deg);background:var(--brand);color:#fff;border-color:var(--brand)}
.acc-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease}
.acc.open .acc-panel{grid-template-rows:1fr}
.acc-panel>div{overflow:hidden}
.acc-body{padding:0 22px 20px 22px;color:var(--ink-2);font-size:15px;line-height:1.85}
.acc.open .acc-body{border-left:3px solid var(--brand);margin-left:22px;padding-left:16px}

/* ---------- cta ---------- */
.cta-band{background:#0E1B33;padding:56px 0}
@media(min-width:1024px){.cta-band{padding:88px 0}}
.cta-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media(min-width:1024px){.cta-grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:56px}}
.cta-band h2{color:#fff;font-size:clamp(23px,2.4vw,32px);font-weight:700;line-height:1.35;letter-spacing:-.01em}
.cta-band .cta-lead{margin-top:16px;color:rgba(255,255,255,.74);font-size:16px;max-width:520px}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.88);font-size:15px;line-height:1.7}
.cta-points i{color:var(--ok);font-size:13px;margin-top:8px}
.cta-form{background:#fff;border-radius:var(--r-l);padding:26px;box-shadow:var(--sd-3)}
@media(min-width:768px){.cta-form{padding:30px}}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:8px;font-weight:500}
.field input,.field select{width:100%;height:46px;border:1px solid var(--line);border-radius:var(--r-m);padding:0 14px;background:#fff;outline:none;font-size:15px;transition:border-color .18s ease,box-shadow .18s ease}
.field input:focus,.field select:focus{border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-50)}
.cta-form .btn{width:100%}
.form-tip{margin-top:12px;font-size:13px;color:var(--ink-3);text-align:center}

/* ---------- footer ---------- */
.site-footer{background:#0F1B2E;color:#8A9AB4;padding:56px 0 0}
@media(min-width:1024px){.site-footer{padding:72px 0 0}}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px}}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:#8A9AB4;max-width:340px}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-col li a{display:inline-flex;align-items:center;min-height:38px;font-size:14px;color:#8A9AB4;transition:color .18s ease}
.footer-col li a:hover{color:#fff}
.footer-bottom{margin-top:44px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:#6F7F99}
.footer-bottom-inner a{color:#6F7F99}
.footer-bottom-inner a:hover{color:#fff}
.back-top{position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--sd-2);opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease,background .2s ease;z-index:50}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{background:var(--brand-800);transform:translateY(-2px)}

/* roulang page: article */
:root{
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --surface-2:#EDF2FA;
  --line:#DDE5F1;
  --ink:#0E1B33;
  --ink-2:#4A5A75;
  --ink-3:#8494AC;
  --brand:#1E5FD8;
  --brand-800:#1648A8;
  --brand-50:#E3EDFD;
  --accent:#F97316;
  --accent-hover:#EA6A0B;
  --ok:#12A594;
  --navy:#0E1B33;
  --footer-bg:#0F1B2E;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --pill:999px;
  --sd-1:0 1px 2px rgba(16,32,64,.06),0 1px 3px rgba(16,32,64,.04);
  --sd-2:0 6px 20px -6px rgba(16,32,64,.14);
  --sd-3:0 18px 48px -18px rgba(16,32,64,.28);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
ul,ol{list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;}
p{margin:0;}
.num,time,.stat-num{font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.site-header.is-scrolled{box-shadow:var(--sd-1);}
.nav-wrap{display:flex;align-items:center;height:72px;gap:16px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:18px;font-weight:700;line-height:1;}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:none;}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
}
.nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 12px;font-size:16px;font-weight:500;color:var(--ink-2);transition:color .18s ease;}
.nav-link:hover{color:var(--brand);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;background:var(--brand);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.search-box{display:none;}
@media (min-width:1024px){
  .search-box{display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:var(--pill);background:var(--surface-2);color:var(--ink-3);transition:width .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;}
  .search-box:focus-within{width:260px;background:#fff;border-color:var(--brand);box-shadow:0 0 0 2px rgba(30,95,216,.28);}
  .search-box input{flex:1;min-width:0;height:38px;border:0;background:transparent;outline:none;color:var(--ink);font-size:14px;}
  .search-box input::placeholder{color:var(--ink-3);}
}
.menu-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-m);border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;}
@media (min-width:1024px){.menu-btn{display:none;}}
@media (max-width:1023px){
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;
    display:flex;flex-direction:column;align-items:stretch;gap:6px;
    padding:88px 20px 24px;background:#fff;box-shadow:var(--sd-3);
    transform:translateX(102%);visibility:hidden;overflow-y:auto;z-index:60;
    transition:transform .28s ease,visibility .28s ease;
  }
  .nav-links.is-open{transform:translateX(0);visibility:visible;}
  .nav-link{height:48px;padding:0 14px;border-radius:var(--r-m);font-size:16px;}
  .nav-link.active{background:var(--brand-50);}
  .nav-link.active::after{display:none;}
}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--pill);font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--sd-2);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-800);transform:translateY(-1px);box-shadow:var(--sd-2);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-50);}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.link-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;}
.link-text:hover{text-decoration:underline;text-underline-offset:4px;}

/* ---------- 页头 ---------- */
.page-head{background:#fff;border-bottom:1px solid var(--line);padding:26px 0 30px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;font-size:13px;color:var(--ink-3);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;max-width:100%;}
.breadcrumb a{color:var(--ink-3);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C3CEDF;}
.breadcrumb .current{color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60vw;}
@media (min-width:768px){.breadcrumb .current{max-width:520px;}}
.article-title{font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--ink);margin:16px 0 16px;max-width:900px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--ink-3);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px;}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--pill);font-size:12px;font-weight:500;}
.badge-brand{background:var(--brand-50);color:var(--brand-800);}
.status-ok{color:var(--ok);}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px;padding-top:30px;padding-bottom:56px;}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:52px;padding-top:44px;padding-bottom:80px;}
}
.article-main{min-width:0;}
.article-cover{margin:0 0 28px;border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sd-1);border:1px solid var(--line);background:var(--brand-50);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.article-cover figcaption{font-size:12.5px;color:var(--ink-3);padding:10px 16px;background:#fff;}

.article-content{max-width:780px;font-size:16px;line-height:1.9;color:var(--ink-2);}
.article-content p{margin:0 0 1em;}
.article-content h2{position:relative;font-size:21px;font-weight:700;line-height:1.45;color:var(--ink);margin:2em 0 .8em;padding-left:14px;scroll-margin-top:96px;}
.article-content h2::before{content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;border-radius:3px;background:var(--brand);}
.article-content h3{font-size:18px;font-weight:600;color:var(--ink);margin:1.6em 0 .6em;scroll-margin-top:96px;}
.article-content ul,.article-content ol{margin:0 0 1.1em;padding-left:0;}
.article-content ul li{position:relative;padding-left:20px;margin-bottom:.5em;line-height:1.8;}
.article-content ul li::before{content:"";position:absolute;left:4px;top:.75em;width:6px;height:6px;border-radius:50%;background:var(--brand);}
.article-content ol{counter-reset:artol;}
.article-content ol li{position:relative;padding-left:30px;margin-bottom:.55em;line-height:1.8;}
.article-content ol li::before{counter-increment:artol;content:counter(artol);position:absolute;left:0;top:.35em;width:20px;height:20px;border-radius:50%;background:var(--brand-50);color:var(--brand-800);font-size:12px;font-weight:700;display:grid;place-items:center;}
.article-content blockquote{margin:1.4em 0;padding:14px 18px;background:var(--surface-2);border-left:3px solid var(--brand);border-radius:0 var(--r-m) var(--r-m) 0;color:var(--ink-2);}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;margin:1.4em 0;font-size:15px;}
.article-content th{background:var(--surface-2);color:var(--ink);font-weight:600;text-align:left;}
.article-content th,.article-content td{padding:10px 14px;border-bottom:1px solid var(--line);}
.article-content tr:last-child td{border-bottom:none;}
.article-content img{border-radius:var(--r-m);margin:1.2em 0;height:auto;}
.article-content a{color:var(--brand);border-bottom:1px solid rgba(30,95,216,.35);}
.article-content a:hover{border-bottom-color:var(--brand);}
.article-content strong{color:var(--ink);font-weight:600;}
@media (max-width:640px){
  .article-content table{display:block;overflow-x:auto;white-space:nowrap;}
}

.empty-state{background:#fff;border:1px dashed var(--line);border-radius:var(--r-l);padding:48px 24px;text-align:center;box-shadow:var(--sd-1);max-width:780px;}
.empty-state i{font-size:28px;color:var(--brand);}
.empty-state p{margin:14px 0 20px;color:var(--ink-2);font-size:15px;}

.article-side{display:none;}
@media (min-width:1024px){.article-side{display:block;}}
.toc-card{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:18px;box-shadow:var(--sd-1);max-height:calc(100vh - 140px);overflow-y:auto;}
.toc-title{font-size:14px;font-weight:700;color:var(--ink);margin:0 0 10px;}
.toc-list ul{margin:0;padding:0;}
.toc-list li{margin-bottom:6px;}
.toc-list a{display:block;font-size:13px;line-height:1.6;color:var(--ink-3);padding-left:10px;border-left:2px solid transparent;transition:color .18s ease,border-color .18s ease;}
.toc-list a:hover{color:var(--brand);}
.toc-list a.is-active{color:var(--brand);border-left-color:var(--brand);font-weight:600;}
.toc-list .toc-l3 a{padding-left:22px;font-size:12.5px;}

/* ---------- 文章底部 ---------- */
.article-foot{max-width:780px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;}
.tag-label,.share-label{font-size:13px;color:var(--ink-3);}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--pill);background:var(--surface-2);color:var(--ink-2);font-size:13px;transition:background .18s ease,color .18s ease;}
.tag:hover{background:var(--brand-50);color:var(--brand-800);}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.share-btn{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 14px;border-radius:var(--pill);border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:13px;cursor:pointer;transition:border-color .18s ease,color .18s ease,box-shadow .18s ease;}
.share-btn:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--sd-1);}
.back-links{margin-top:24px;}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:88px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;color:var(--ink);}
.section-head p{margin-top:8px;font-size:15px;color:var(--ink-2);max-width:640px;line-height:1.8;}

.entry-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.entry-grid{grid-template-columns:repeat(3,1fr);}}
.entry-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:22px;box-shadow:var(--sd-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:#C9D8EF;}
.entry-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-50);color:var(--brand);display:grid;place-items:center;font-size:18px;margin-bottom:14px;}
.entry-card h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.entry-card p{font-size:14px;color:var(--ink-2);line-height:1.75;margin-bottom:16px;}
.entry-card .link-text{margin-top:auto;}

/* ---------- CTA ---------- */
.cta-band{background:var(--navy);color:#fff;padding:56px 0;}
@media (min-width:1024px){.cta-band{padding:80px 0;}}
.cta-inner{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){.cta-inner{grid-template-columns:minmax(0,1fr) 460px;align-items:center;gap:56px;}}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;margin-bottom:12px;}
.cta-copy p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.85;max-width:520px;}
.cta-form{background:#fff;border-radius:var(--r-l);padding:22px;box-shadow:var(--sd-3);}
.cta-form label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:8px;}
.cta-form-row{display:flex;flex-direction:column;gap:10px;}
@media (min-width:520px){.cta-form-row{flex-direction:row;}}
.cta-form input{flex:1;min-width:0;height:46px;border-radius:12px;border:1px solid var(--line);padding:0 14px;font-size:15px;color:var(--ink);background:#fff;transition:border-color .18s ease,box-shadow .18s ease;}
.cta-form input:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(30,95,216,.3);outline:none;}
.form-tip{font-size:12.5px;color:var(--ink-3);margin-top:10px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:#93A3BA;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:#93A3BA;max-width:340px;}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#93A3BA;transition:color .18s ease;}
.footer-col a:hover{color:#fff;}
.footer-bottom{margin-top:44px;border-top:1px solid rgba(255,255,255,.1);padding:18px 0;}
.footer-bottom-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;font-size:13px;color:#7C8CA6;}
.footer-bottom-inner p{margin:0;}

.to-top{position:fixed;right:18px;bottom:18px;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--brand);display:grid;place-items:center;box-shadow:var(--sd-2);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease;z-index:40;}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}

/* roulang page: category1 */
:root{
    --bg:#F5F7FB;
    --surface:#FFFFFF;
    --surface-2:#EDF2FA;
    --line:#DDE5F1;
    --ink:#0E1B33;
    --ink-2:#4A5A75;
    --ink-3:#8494AC;
    --brand:#1E5FD8;
    --brand-800:#1648A8;
    --brand-50:#E3EDFD;
    --accent:#F97316;
    --accent-600:#EA6A0B;
    --ok:#12A594;
    --r-s:8px;
    --r-m:12px;
    --r-l:18px;
    --sd-1:0 1px 2px rgba(16,32,64,.06),0 1px 3px rgba(16,32,64,.04);
    --sd-2:0 6px 20px -6px rgba(16,32,64,.14);
    --sd-3:0 18px 48px -18px rgba(16,32,64,.28);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol{margin:0}
  ul{padding:0;list-style:none}
  ::placeholder{color:var(--ink-3)}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
  @media (min-width:768px){.container{padding:0 24px}}
  @media (min-width:1024px){.container{padding:0 32px}}
  .tabular{font-variant-numeric:tabular-nums}

  /* ---------- 导航 ---------- */
  .site-header{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
  .site-header.scrolled{box-shadow:var(--sd-1)}
  .nav-wrap{display:flex;align-items:center;gap:16px;height:60px}
  @media (min-width:1024px){.nav-wrap{height:72px;gap:24px}}
  .brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--ink)}
  .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700;flex:none}
  .brand-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
  @media (min-width:1024px){.brand-text{font-size:18px}}
  .nav-links{
    display:flex;position:fixed;top:0;right:0;z-index:60;
    flex-direction:column;gap:6px;
    width:280px;max-width:84vw;height:100vh;
    background:var(--surface);padding:84px 20px 28px;
    box-shadow:var(--sd-3);overflow-y:auto;
    transform:translateX(102%);transition:transform .28s ease;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-link{display:flex;align-items:center;height:48px;padding:0 14px;border-radius:999px;font-size:16px;font-weight:500;color:var(--ink-2);transition:background .16s ease,color .16s ease}
  .nav-link:hover{color:var(--brand);background:var(--brand-50)}
  .nav-link.active{color:var(--brand);background:var(--brand-50);font-weight:600}
  .nav-drawer-cta{display:inline-flex;margin-top:10px;height:48px;align-items:center;justify-content:center;border-radius:999px;background:var(--accent);color:#fff;font-weight:600}
  @media (min-width:1024px){
    .nav-links{position:static;flex-direction:row;align-items:center;height:auto;width:auto;max-width:none;background:transparent;padding:0;box-shadow:none;overflow:visible;transform:none;margin-left:8px;gap:4px}
    .nav-link{height:44px;padding:0 12px;font-size:15px}
    .nav-link.active{background:var(--brand-50)}
    .nav-drawer-cta{display:none}
  }
  .nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
  .search-box{display:none;align-items:center;gap:8px;height:42px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--surface-2);transition:background .18s ease,box-shadow .18s ease,border-color .18s ease}
  .search-box i{color:var(--ink-3);font-size:14px}
  .search-box input{border:0;background:transparent;outline:none;width:150px;font-size:14px;color:var(--ink)}
  .search-box:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-50)}
  @media (min-width:1024px){.search-box{display:flex}.search-box:focus-within input{width:190px}.search-box input{transition:width .2s ease}}
  .menu-btn{display:grid;place-items:center;width:44px;height:44px;border-radius:var(--r-m);border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer}
  .menu-btn:hover{border-color:var(--brand);color:var(--brand)}
  @media (min-width:1024px){.menu-btn{display:none}}
  .nav-backdrop{position:fixed;inset:0;background:rgba(14,27,51,.42);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:55}
  .nav-backdrop.show{opacity:1;pointer-events:auto}
  @media (min-width:1024px){.nav-backdrop{display:none}}

  /* ---------- 按钮 ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease}
  .btn-accent{background:var(--accent);color:#fff}
  .btn-accent:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:var(--sd-2)}
  .btn-accent:active{transform:none;box-shadow:none}
  .btn-brand{background:#fff;border-color:var(--brand);color:var(--brand)}
  .btn-brand:hover{background:var(--brand-50)}
  .btn-outline-light{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.55);color:#fff}
  .btn-outline-light:hover{background:rgba(255,255,255,.16)}
  .btn-block{width:100%}
  .nav-cta{display:none;height:42px;padding:0 18px;font-size:14px}
  @media (min-width:1024px){.nav-cta{display:inline-flex}}
  .text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px}
  .text-link:hover{text-decoration:underline;text-underline-offset:4px}
  .text-link i{font-size:12px}

  /* ---------- Hero ---------- */
  .page-hero{position:relative;isolation:isolate;color:#fff;overflow:hidden}
  .page-hero::before{content:"";position:absolute;inset:0;z-index:-2;background:url(/assets/images/backpic/back-1.png) center/cover no-repeat}
  .page-hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(14,27,51,.95) 0%,rgba(14,27,51,.86) 46%,rgba(14,27,51,.28) 78%,rgba(14,27,51,.12) 100%)}
  .page-hero-inner{padding:52px 0 44px;max-width:720px}
  @media (min-width:1024px){.page-hero-inner{padding:76px 0 64px}}
  .crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.76);margin-bottom:18px}
  .crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
  .page-hero h1{font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.2;letter-spacing:-.01em}
  .hero-lead{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.86);max-width:560px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:0;margin-top:28px;border-top:1px solid rgba(255,255,255,.2);padding-top:16px}
  .hero-tags span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.9);padding:0 18px;border-left:1px solid rgba(255,255,255,.2)}
  .hero-tags span:first-child{padding-left:0;border-left:0}
  .hero-tags i{color:var(--ok);font-size:12px}
  .status-strip{display:flex;align-items:flex-start;gap:10px;margin-top:26px;padding:12px 16px;border-radius:var(--r-m);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.9)}
  .status-dot{width:8px;height:8px;border-radius:50%;background:var(--ok);margin-top:8px;flex:none;box-shadow:0 0 0 4px rgba(18,165,148,.22)}

  /* ---------- 板块 ---------- */
  .section{padding:56px 0}
  @media (min-width:768px){.section{padding:72px 0}}
  @media (min-width:1024px){.section{padding:96px 0}}
  .section-soft{background:var(--surface-2)}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
  .section-head h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
  .section-head p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:640px}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-50);border-radius:999px;padding:5px 12px;margin-bottom:12px}

  /* ---------- 筛选胶囊 ---------- */
  .chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
  .chip{display:inline-flex;align-items:center;min-height:42px;padding:0 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:14px;font-weight:500;cursor:pointer;transition:border-color .16s ease,color .16s ease,background .16s ease}
  .chip:hover{border-color:var(--brand);color:var(--brand)}
  .chip.active{background:var(--brand);border-color:var(--brand);color:#fff}

  /* ---------- 卡片 ---------- */
  .card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sd-1);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
  .card:hover{transform:translateY(-4px);box-shadow:var(--sd-2)}
  .card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50)}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
  .card:hover .card-media img{transform:scale(1.04)}
  .card-badge{position:absolute;left:12px;top:12px;background:rgba(14,27,51,.74);color:#fff;font-size:12px;font-weight:500;padding:4px 10px;border-radius:999px}
  .card-corner{position:absolute;right:12px;top:12px;background:rgba(255,255,255,.92);color:var(--brand-800);font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
  .media-fallback{display:grid;place-items:center}
  .media-fallback::after{content:"\f03e";font-family:"Font Awesome 6 Free";font-weight:900;font-size:26px;color:var(--brand);opacity:.45}
  .card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
  .card-title{font-size:18px;font-weight:600;line-height:1.5}
  .card-abs{font-size:14.5px;color:var(--ink-2);line-height:1.8}
  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .point-list{display:flex;flex-direction:column;gap:8px;padding-top:12px;border-top:1px dashed var(--line)}
  .point-list li{display:flex;gap:9px;font-size:14px;color:var(--ink-2);line-height:1.7}
  .point-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex:none}
  .card-link{margin-top:auto;padding-top:6px}

  /* ---------- 对照条 ---------- */
  .compare-band{display:grid;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sd-1);overflow:hidden}
  @media (min-width:1024px){.compare-band{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);align-items:stretch}}
  .compare-media{position:relative;min-height:230px;background:var(--brand-50)}
  .compare-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
  .compare-body{padding:24px}
  @media (min-width:768px){.compare-body{padding:32px}}
  .compare-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
  .compare-item:last-child{border-bottom:0;padding-bottom:0}
  .compare-item:first-child{padding-top:0}
  .compare-icon{width:40px;height:40px;border-radius:var(--r-m);display:grid;place-items:center;background:var(--brand-50);color:var(--brand);flex:none;font-size:16px}
  .compare-item h3{font-size:17px;font-weight:600;margin-bottom:4px}
  .compare-item p{font-size:14.5px;color:var(--ink-2);line-height:1.8}

  /* ---------- 数据条 ---------- */
  .stat-strip{display:grid;gap:20px}
  @media (min-width:768px){.stat-strip{grid-template-columns:repeat(3,minmax(0,1fr))}}
  .stat-cell{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sd-1);padding:24px;transition:transform .18s ease,box-shadow .18s ease}
  .stat-cell:hover{transform:translateY(-4px);box-shadow:var(--sd-2)}
  .stat-num{font-size:32px;font-weight:700;line-height:1.2;color:var(--brand);font-variant-numeric:tabular-nums}
  .stat-num small{font-size:15px;font-weight:600;color:var(--ink-2);margin-left:6px}
  .stat-cell h3{font-size:16px;font-weight:600;margin:10px 0 6px}
  .stat-cell p{font-size:14.5px;color:var(--ink-2);line-height:1.8}
  .check-list{margin-top:26px;display:grid;gap:12px}
  @media (min-width:768px){.check-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
  .check-list li{display:flex;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:14px 16px;font-size:14.5px;color:var(--ink-2)}
  .check-list i{color:var(--ok);margin-top:5px;font-size:13px;flex:none}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
  .faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;transition:box-shadow .18s ease}
  .faq-item:hover{box-shadow:var(--sd-1)}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:18px 20px;min-height:60px;background:none;border:0;font-size:16.5px;font-weight:600;color:var(--ink);cursor:pointer}
  .faq-q i{color:var(--brand);font-size:14px;transition:transform .22s ease;flex:none}
  .faq-item.open .faq-q i{transform:rotate(180deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
  .faq-a-inner{margin:0 20px 20px 20px;padding-left:16px;border-left:3px solid var(--brand);font-size:15px;line-height:1.85;color:var(--ink-2)}

  /* ---------- CTA ---------- */
  .cta-band{background:#0E1B33;color:#fff;padding:56px 0}
  @media (min-width:1024px){.cta-band{padding:84px 0}}
  .cta-grid{display:grid;gap:32px}
  @media (min-width:1024px){.cta-grid{grid-template-columns:minmax(0,1fr) 420px;align-items:center;gap:48px}}
  .cta-copy h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.3;color:#fff}
  .cta-copy > p{margin-top:14px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.78);max-width:560px}
  .cta-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}
  .cta-list li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.86)}
  .cta-list i{color:var(--accent);margin-top:6px;font-size:12px;flex:none}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .form-card{background:var(--surface);border-radius:var(--r-l);padding:24px;box-shadow:var(--sd-3);color:var(--ink)}
  .form-card h3{font-size:18px;font-weight:600;margin-bottom:16px}
  .form-card label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px;font-weight:500}
  .req{color:#DC2626}
  .form-card input,.form-card textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-m);background:#fff;padding:0 14px;font-size:15px;transition:border-color .16s ease,box-shadow .16s ease}
  .form-card input{height:46px}
  .form-card textarea{min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
  .form-card input:focus,.form-card textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-50)}
  .form-row{margin-bottom:16px}
  .form-hint{font-size:13px;color:var(--ink-3);margin-top:10px;line-height:1.7}
  .form-msg{display:none;font-size:13px;margin-top:12px;line-height:1.7}
  .form-msg.error{display:block;color:#DC2626}
  .form-msg.ok{display:block;color:var(--ok)}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0F1B2E;color:var(--ink-3)}
  .footer-grid{display:grid;gap:32px;padding:52px 0}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;padding:64px 0}}
  .site-footer .brand-text{color:#fff}
  .footer-brand p{margin-top:14px;font-size:14.5px;line-height:1.85;color:var(--ink-3);max-width:320px}
  .footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
  .footer-col li a{display:inline-block;padding:5px 0;font-size:14.5px;color:var(--ink-3);transition:color .16s ease}
  .footer-col li a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.08)}
  .footer-bottom-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;padding:18px 0;font-size:13px;color:var(--ink-3)}

  /* ---------- 回到顶部 ---------- */
  .back-top{position:fixed;right:18px;bottom:22px;z-index:45;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1px solid var(--line);box-shadow:var(--sd-2);color:var(--brand);cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease}
  .back-top.show{opacity:1;pointer-events:auto}
  .back-top:hover{transform:translateY(-2px);color:var(--brand-800)}

/* roulang page: category2 */
:root{
  --bg:#F5F7FB; --surface:#FFFFFF; --surface-2:#EDF2FA; --line:#DDE5F1;
  --ink:#0E1B33; --ink-2:#4A5A75; --ink-3:#8494AC;
  --brand:#1E5FD8; --brand-800:#1648A8; --brand-50:#E3EDFD;
  --accent:#F97316; --accent-700:#EA6A0B; --ok:#12A594; --danger:#DC2626;
  --r-s:8px; --r-m:12px; --r-l:18px;
  --sd-1:0 1px 2px rgba(16,32,64,.06),0 1px 3px rgba(16,32,64,.04);
  --sd-2:0 6px 20px -6px rgba(16,32,64,.14);
  --sd-3:0 18px 48px -18px rgba(16,32,64,.28);
  --footer:#0F1B2E;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;background:var(--bg);color:var(--ink);overflow-x:hidden;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{list-style:none;padding:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media(max-width:1024px){.container{padding:0 24px;}}
@media(max-width:640px){.container{padding:0 16px;}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.site-header.is-stuck{box-shadow:var(--sd-1);}
.nav-wrap{display:flex;align-items:center;gap:18px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;line-height:1;flex-shrink:0;}
.brand-text{font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px;}
.nav-link{display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink-2);transition:background-color .18s ease,color .18s ease;white-space:nowrap;}
.nav-link:hover{color:var(--brand);background:var(--brand-50);}
.nav-link.active{color:var(--brand);background:var(--brand-50);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{display:flex;align-items:center;gap:8px;width:220px;height:42px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface-2);transition:width .22s ease,border-color .2s ease,box-shadow .2s ease,background-color .2s ease;}
.search-box i{color:var(--ink-3);font-size:14px;}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;min-width:0;}
.search-box input::placeholder{color:var(--ink-3);}
.search-box:focus-within{width:260px;background:#fff;border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-50);}
.menu-btn{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;font-size:17px;cursor:pointer;transition:background-color .18s ease;}
.menu-btn:hover{background:var(--surface-2);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;white-space:nowrap;transition:transform .18s ease,box-shadow .2s ease,background-color .18s ease,border-color .18s ease,color .18s ease;}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-700);transform:translateY(-1px);box-shadow:var(--sd-2);}
.btn-accent:active{transform:translateY(0);box-shadow:var(--sd-1);}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-50);}
.btn-ghost:active{background:#d6e4fb;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.nav-cta{height:42px;padding:0 18px;font-size:14px;}
.link-more{color:var(--brand);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap .18s ease;}
.link-more:hover{text-decoration:underline;text-underline-offset:4px;gap:10px;}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;z-index:90;transform:translateX(101%);transition:transform .28s ease;display:flex;flex-direction:column;padding:20px;box-shadow:var(--sd-3);}
.mobile-drawer.open{transform:translateX(0);}
.drawer-mask{position:fixed;inset:0;background:rgba(14,27,51,.45);z-index:80;opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-head button{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;transition:background-color .18s ease;}
.drawer-head button:hover{background:var(--surface-2);}
.drawer-links{display:flex;flex-direction:column;gap:6px;}
.drawer-links a{padding:13px 16px;border-radius:var(--r-m);font-size:16px;font-weight:500;color:var(--ink-2);transition:background-color .18s ease,color .18s ease;}
.drawer-links a:hover,.drawer-links a.active{background:var(--brand-50);color:var(--brand);}
.drawer-search{margin:18px 0 12px;}
.drawer-search input{width:100%;height:46px;border-radius:12px;border:1px solid var(--line);padding:0 14px;background:var(--surface-2);outline:none;font-size:14px;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;}
.drawer-search input:focus{border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-50);background:#fff;}
.drawer-cta{width:100%;margin-top:auto;}

/* ---------- 首屏 ---------- */
.page-hero{position:relative;background:#0E1B33;overflow:hidden;}
.page-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.5;}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,27,51,.96) 0%,rgba(14,27,51,.86) 46%,rgba(14,27,51,.46) 100%);}
.page-hero-inner{position:relative;z-index:2;padding:64px 0 60px;max-width:780px;color:#fff;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:20px;}
.breadcrumb a{color:rgba(255,255,255,.82);transition:color .18s ease;}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.breadcrumb span.sep{color:rgba(255,255,255,.4);}
.hero-badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);color:#fff;font-size:12px;font-weight:500;letter-spacing:.02em;}
.page-hero h1{margin-top:18px;font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.2;letter-spacing:-.01em;color:#fff;}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.84);max-width:620px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.page-hero .btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.page-hero .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;}
.hero-tags{display:flex;flex-wrap:wrap;margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.2);}
.hero-tags li{padding-right:24px;margin-right:24px;border-right:1px solid rgba(255,255,255,.2);font-size:14px;color:rgba(255,255,255,.8);font-variant-numeric:tabular-nums;}
.hero-tags li:last-child{border-right:0;margin-right:0;padding-right:0;}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:15px;max-width:680px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.06em;margin-bottom:12px;}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px;}

/* ---------- 时间线 ---------- */
.tl-list{display:flex;flex-direction:column;gap:34px;position:relative;}
.tl-item{display:grid;grid-template-columns:56px minmax(0,1fr);gap:22px;position:relative;}
.tl-item::before{content:"";position:absolute;left:27px;top:58px;bottom:-34px;width:2px;background:var(--line);}
.tl-item:last-child::before{display:none;}
.tl-dot{width:56px;height:56px;border-radius:999px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--sd-1);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--brand);font-size:20px;font-variant-numeric:tabular-nums;position:relative;z-index:1;}
.tl-card{display:grid;grid-template-columns:250px minmax(0,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sd-1);overflow:hidden;transition:box-shadow .2s ease,transform .2s ease;}
.tl-card:hover{box-shadow:var(--sd-2);transform:translateY(-4px);}
.tl-media{position:relative;overflow:hidden;background:var(--brand-50);min-height:180px;}
.tl-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.tl-card:hover .tl-media img{transform:scale(1.04);}
.tl-body{padding:24px 28px 26px;}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--brand-50);color:var(--brand-800);font-size:12px;font-weight:500;}
.tl-body h3{margin-top:12px;font-size:19px;font-weight:600;line-height:1.45;}
.tl-body p{margin-top:12px;color:var(--ink-2);font-size:15px;line-height:1.85;}
.mini-list{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.mini-list li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.mini-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand);}

/* ---------- 加载更多 ---------- */
.load-more{display:flex;flex-direction:column;align-items:center;gap:12px;margin-top:44px;}
.load-more span{font-size:13px;color:var(--ink-3);}
.load-more .btn{min-width:200px;}

/* ---------- 要点卡 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:26px;box-shadow:var(--sd-1);transition:box-shadow .2s ease,transform .2s ease;}
.info-card:hover{box-shadow:var(--sd-2);transform:translateY(-4px);}
.ic-head{display:flex;align-items:center;gap:12px;}
.ic-icon{width:42px;height:42px;border-radius:12px;background:var(--brand-50);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;}
.info-card h3{font-size:18px;font-weight:600;line-height:1.4;}
.info-card p{margin-top:14px;color:var(--ink-2);font-size:15px;line-height:1.85;}
.info-card .ic-foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;}

/* ---------- 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:var(--r-m);overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;}
.faq-item.open{box-shadow:var(--sd-2);border-color:#C9D8F2;}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;background:none;border:0;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);cursor:pointer;line-height:1.5;}
.faq-q .icon{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--surface-2);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:13px;transition:transform .24s ease,background-color .24s ease,color .24s ease;}
.faq-item.open .faq-q .icon{transform:rotate(180deg);background:var(--brand);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);transition:border-left .2s ease,padding-left .2s ease;}
.faq-item.open .faq-a-inner{border-left:3px solid var(--brand);padding-left:19px;}

/* ---------- CTA ---------- */
.cta-band{background:#0E1B33;padding:72px 0;}
.cta-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.35;}
.cta-inner .cta-lead{margin-top:14px;color:rgba(255,255,255,.76);font-size:15px;line-height:1.85;max-width:520px;}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.8);font-size:14px;}
.cta-points i{color:var(--ok);margin-top:5px;font-size:13px;}
.cta-form{background:#fff;border-radius:var(--r-l);padding:26px;box-shadow:var(--sd-3);}
.cta-form h3{font-size:17px;font-weight:600;margin-bottom:16px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px;}
.field .req{color:var(--accent);}
.field input,.field textarea{width:100%;height:46px;padding:0 14px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:15px;outline:none;transition:border-color .18s ease,box-shadow .18s ease;}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-50);}
.field .hint{font-size:12px;color:var(--ink-3);margin-top:6px;}
.form-submit{width:100%;margin-top:6px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);padding-top:60px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#93A3BC;max-width:340px;}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col li+li{margin-top:10px;}
.footer-col a{font-size:14px;color:#93A3BC;transition:color .18s ease;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;}
.footer-bottom-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.footer-bottom p{font-size:13px;color:#7C8CA6;}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;border:0;display:none;align-items:center;justify-content:center;box-shadow:var(--sd-2);cursor:pointer;z-index:70;transition:background-color .18s ease,transform .18s ease;}
.to-top.show{display:flex;}
.to-top:hover{background:var(--brand-800);transform:translateY(-2px);}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .nav-links,.search-box{display:none;}
  .menu-btn{display:flex;}
  .section{padding:72px 0;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
}
@media(max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
  .tl-card{grid-template-columns:1fr;}
  .tl-media{min-height:180px;height:180px;}
}
@media(max-width:768px){
  .section{padding:56px 0;}
  .grid-2{grid-template-columns:1fr;}
  .page-hero-inner{padding:48px 0 44px;}
  .hero-tags{margin-top:28px;}
  .hero-tags li{padding-right:16px;margin-right:16px;font-size:13px;}
}
@media(max-width:640px){
  .nav-wrap{height:60px;}
  .nav-cta{display:none;}
  .tl-item{grid-template-columns:44px minmax(0,1fr);gap:14px;}
  .tl-dot{width:44px;height:44px;font-size:16px;}
  .tl-item::before{left:21px;top:46px;}
  .tl-body{padding:20px;}
  .cta-band{padding:56px 0;}
  .cta-form{padding:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px 18px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom-inner{flex-direction:column;gap:8px;}
  .hero-sub{font-size:15.5px;}
  .to-top{right:16px;bottom:16px;}
}

/* roulang page: category3 */
:root{
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --surface-2:#EDF2FA;
  --line:#DDE5F1;
  --ink:#0E1B33;
  --ink-2:#4A5A75;
  --ink-3:#8494AC;
  --brand:#1E5FD8;
  --brand-800:#1648A8;
  --brand-50:#E3EDFD;
  --accent:#F97316;
  --accent-800:#EA6A0B;
  --ok:#12A594;
  --danger:#DC2626;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --sd-1:0 1px 2px rgba(16,32,64,.06),0 1px 3px rgba(16,32,64,.04);
  --sd-2:0 6px 20px -6px rgba(16,32,64,.14);
  --sd-3:0 18px 48px -18px rgba(16,32,64,.28);
}
*,*::before,*::after{box-sizing:border-box}
body.page-body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
html{scroll-behavior:smooth}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
button{font-family:inherit}
html .container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:70;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:var(--sd-1)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;flex:none}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700}
.brand-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{padding:8px 13px;border-radius:999px;color:var(--ink-2);font-size:15px;font-weight:500;text-decoration:none;transition:background .16s ease,color .16s ease;white-space:nowrap}
.nav-link:hover{background:var(--brand-50);color:var(--brand-800)}
.nav-link.active{background:var(--brand-50);color:var(--brand-800);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:8px;width:220px;height:42px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--surface-2);transition:width .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease}
.search-box:focus-within{width:260px;background:#fff;border-color:var(--brand);box-shadow:0 0 0 2px rgba(30,95,216,.18)}
.search-box i{color:var(--ink-3);font-size:13px}
.search-box input{border:0;background:transparent;outline:none;flex:1;min-width:0;font-size:14px;color:var(--ink)}
.search-box input::placeholder{color:var(--ink-3)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;border:1px solid transparent;transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease,border-color .16s ease}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sd-1)}
.btn-accent:hover{background:var(--accent-800);transform:translateY(-1px);box-shadow:var(--sd-2)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-50)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.nav-cta{height:42px;padding:0 20px}
.menu-btn{display:none;width:44px;height:44px;border-radius:var(--r-m);border:1px solid var(--line);background:#fff;color:var(--ink);place-items:center;cursor:pointer}
.menu-btn:hover{background:var(--surface-2)}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0 0 0 auto;width:min(86vw,340px);background:#fff;z-index:90;transform:translateX(100%);transition:transform .28s ease;display:flex;flex-direction:column;box-shadow:var(--sd-3)}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:var(--r-m);border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink-2)}
.drawer-body{padding:16px 20px;overflow:auto;flex:1;display:flex;flex-direction:column;gap:8px}
.drawer-link{padding:13px 14px;border-radius:var(--r-m);font-size:16px;font-weight:500;color:var(--ink-2);text-decoration:none}
.drawer-link:hover{background:var(--surface-2);color:var(--ink)}
.drawer-link.active{background:var(--brand-50);color:var(--brand-800);font-weight:600}
.drawer-search{display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface-2);margin-top:8px}
.drawer-search input{border:0;background:transparent;outline:none;flex:1;font-size:15px;color:var(--ink)}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}
.scrim{position:fixed;inset:0;background:rgba(14,27,51,.45);z-index:80;opacity:0;pointer-events:none;transition:opacity .25s ease}
.scrim.open{opacity:1;pointer-events:auto}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;background:#0E1B33;padding:64px 0 72px}
.page-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.55}
.page-hero-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,27,51,.94) 0%,rgba(14,27,51,.84) 46%,rgba(14,27,51,.34) 100%)}
.page-hero-inner{position:relative;z-index:2;max-width:660px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:20px}
.crumbs a{color:rgba(255,255,255,.82);text-decoration:none}
.crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.crumbs span.sep{color:rgba(255,255,255,.4)}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);color:#DCE7FA;font-size:12px;font-weight:500;letter-spacing:.02em}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(18,165,148,.25)}
.page-hero h1{color:#fff;font-size:clamp(26px,3.2vw,42px);font-weight:700;line-height:1.22;letter-spacing:-.01em;margin:20px 0 16px}
.page-hero .lead{color:rgba(255,255,255,.82);font-size:16px;line-height:1.85;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;margin-top:34px;border-top:1px solid rgba(255,255,255,.2);padding-top:18px}
.hero-stat{padding-right:26px;margin-right:26px;border-right:1px solid rgba(255,255,255,.2)}
.hero-stat:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stat b{display:block;color:#fff;font-size:15px;font-weight:600}
.hero-stat span{color:rgba(255,255,255,.6);font-size:13px}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:clamp(21px,2.2vw,29px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.section-head .sub{color:var(--ink-2);font-size:15px;margin-top:8px;max-width:620px}
.text-link{color:var(--brand);font-size:15px;font-weight:600;text-decoration:none;white-space:nowrap}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.eyebrow{display:inline-block;color:var(--brand);background:var(--brand-50);border-radius:999px;padding:5px 13px;font-size:12px;font-weight:600;letter-spacing:.04em;margin-bottom:14px}

/* ---------- zigzag ---------- */
.zigzag{display:flex;flex-direction:column;gap:72px}
.zig-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.zig-media{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sd-2);background:var(--brand-50);aspect-ratio:16/9}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.zig-media:hover img{transform:scale(1.03)}
.zig-body h3{font-size:clamp(19px,1.7vw,23px);font-weight:700;line-height:1.4;margin-bottom:14px}
.zig-body p{color:var(--ink-2);font-size:16px;margin-bottom:16px}
.zig-body p:last-of-type{margin-bottom:0}
.zig-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.zig-list li{display:flex;gap:10px;color:var(--ink-2);font-size:15px;line-height:1.7}
.zig-list i{color:var(--brand);font-size:13px;margin-top:7px}
.zig-row.reverse .zig-media{order:2}
.step-tag{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--brand-800);background:var(--brand-50);border-radius:999px;padding:5px 12px;margin-bottom:14px}

/* ---------- stat strip ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sd-1);padding:32px}
.stat-cell{text-align:center;padding:8px 12px;position:relative}
.stat-cell+.stat-cell::before{content:"";position:absolute;left:0;top:14%;height:72%;width:1px;background:var(--line)}
.stat-cell b{display:block;font-size:clamp(28px,3vw,40px);font-weight:700;color:var(--brand-800);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-cell b em{font-style:normal;font-size:15px;font-weight:600;color:var(--ink-3);margin-left:4px}
.stat-cell span{display:block;margin-top:10px;color:var(--ink-2);font-size:14px}

/* ---------- error cards ---------- */
.err-list{display:flex;flex-direction:column;gap:16px}
.err-card{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-m);padding:22px 24px;display:grid;grid-template-columns:200px 1fr 1fr;gap:20px;align-items:start;transition:box-shadow .18s ease,transform .18s ease,background .18s ease}
.err-card:hover{background:#fff;box-shadow:var(--sd-2);transform:translateY(-3px)}
.err-quote{font-size:15px;font-weight:600;color:var(--ink)}
.err-quote i{color:var(--accent);margin-right:8px;font-size:13px}
.err-field h4{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--ink-3);margin-bottom:6px}
.err-field p{font-size:15px;color:var(--ink-2);line-height:1.75}

/* ---------- entry cards ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sd-1);text-decoration:none;color:inherit;transition:transform .18s ease,box-shadow .18s ease}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sd-2)}
.entry-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-50)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.entry-card:hover .entry-thumb img{transform:scale(1.04)}
.entry-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.entry-body h3{font-size:18px;font-weight:700;line-height:1.45}
.entry-body p{color:var(--ink-2);font-size:14px;line-height:1.75;flex:1}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:500;background:var(--brand-50);color:var(--brand-800);width:fit-content}
.badge-ok{background:rgba(18,165,148,.12);color:#0B7C70}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--sd-1);overflow:hidden;transition:box-shadow .2s ease}
.faq-item.open{box-shadow:var(--sd-2)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);position:relative;min-height:44px}
.faq-q::before{content:"";position:absolute;left:0;top:16%;height:0;width:3px;background:var(--brand);transition:height .22s ease;border-radius:0 3px 3px 0}
.faq-item.open .faq-q::before{height:68%}
.faq-q i{color:var(--brand);font-size:14px;transition:transform .22s ease;flex:none}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{padding:0 22px 22px;color:var(--ink-2);font-size:15px;line-height:1.85}

/* ---------- cta ---------- */
.cta-band{background:#0E1B33;padding:80px 0}
.cta-grid{display:grid;grid-template-columns:1fr 420px;gap:56px;align-items:center}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.3;margin-bottom:16px}
.cta-copy p{color:rgba(255,255,255,.74);font-size:16px;max-width:520px}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:10px;color:rgba(255,255,255,.8);font-size:15px}
.cta-points i{color:var(--accent);font-size:13px;margin-top:6px}
.form-card{background:#fff;border-radius:var(--r-l);padding:28px;box-shadow:var(--sd-3)}
.form-card h3{font-size:19px;font-weight:700;margin-bottom:6px}
.form-card .hint{color:var(--ink-3);font-size:13px;margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:8px;font-weight:500}
.field input,.field textarea{width:100%;height:46px;border:1px solid var(--line);border-radius:var(--r-m);padding:0 14px;font-size:15px;color:var(--ink);background:#fff;font-family:inherit;transition:border-color .16s ease,box-shadow .16s ease}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(30,95,216,.18)}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.form-card .btn{width:100%}
.form-note{margin-top:14px;font-size:13px;color:var(--ok);min-height:18px}

/* ---------- footer ---------- */
.site-footer{background:#0F1B2E;color:#8494AC;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--brand)}
.footer-brand p{font-size:14px;line-height:1.8;color:#8494AC;max-width:320px}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:#8494AC;font-size:14px;text-decoration:none;transition:color .16s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1)}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:22px 24px;font-size:13px;color:#6C7C95}
.footer-bottom-inner p{margin:0}

/* ---------- to top ---------- */
.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--brand);box-shadow:var(--sd-2);cursor:pointer;display:grid;place-items:center;opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .22s ease,transform .22s ease;z-index:60}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--brand-50)}

/* ---------- fallback ---------- */
.img-fallback{position:relative;background:var(--brand-50)}
.img-fallback::after{content:"\f03e";font-family:"Font Awesome 6 Free","Font Awesome 5 Free";font-weight:900;color:#9DB4D8;font-size:30px;position:absolute;inset:0;display:flex;align-items:center;justify-content:center}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links,.search-box{display:none}
  .menu-btn{display:grid}
  .zig-row,.zig-row.reverse{grid-template-columns:1fr;gap:28px}
  .zig-row.reverse .zig-media{order:0}
  .err-card{grid-template-columns:1fr;gap:14px}
  .entry-grid{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
  .zigzag{gap:56px}
}
@media (max-width:767px){
  html .container{padding-left:18px;padding-right:18px}
  .nav-wrap{height:60px;gap:12px}
  .brand-text{font-size:16px}
  .nav-cta{display:none}
  .page-hero{padding:44px 0 52px}
  .hero-stats{gap:0;flex-direction:column}
  .hero-stat{border-right:0;margin-right:0;padding-right:0;border-bottom:1px solid rgba(255,255,255,.16);padding-bottom:12px;margin-bottom:12px}
  .hero-stat:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
  .stat-strip{grid-template-columns:1fr;gap:0;padding:12px 6px}
  .stat-cell{padding:18px 12px}
  .stat-cell+.stat-cell::before{left:8%;right:8%;top:0;height:1px;width:auto}
  .entry-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
  .zigzag{gap:44px}
  .cta-band{padding:56px 0}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom-inner{flex-direction:column;padding:20px 18px}
  .to-top{right:14px;bottom:14px;width:44px;height:44px}
}