/* roulang page: index */
:root{
  --c-brand:#2C6CB0;
  --c-brand-deep:#1D4E86;
  --c-brand-soft:#EAF2FB;
  --c-accent:#F2643C;
  --c-accent-soft:#FFF1EA;
  --c-ink:#121A24;
  --c-ink-2:#45566B;
  --c-ink-3:#7C8CA0;
  --c-line:#E4EAF2;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-dark:#101B28;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(18,38,63,.06),0 8px 24px -12px rgba(18,38,63,.12);
  --sh-2:0 2px 4px rgba(18,38,63,.08),0 18px 40px -16px rgba(18,38,63,.22);
  --ok:#1F9D63;
  --warn:#D98A0B;
  --err:#D0453A;
}
*,*::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","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;color:var(--c-ink-2);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.3px;}
p{margin:0;}
h1{font-size:clamp(30px,4.6vw,52px);line-height:1.2;letter-spacing:-.5px;}
h2{font-size:clamp(24px,3vw,36px);line-height:1.3;}
h3{font-size:20px;font-weight:600;line-height:1.4;}
::selection{background:var(--c-brand);color:#fff;}

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

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);font-size:16px;font-weight:700;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .18s,color .18s,border-color .18s,transform .16s,box-shadow .18s;
}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 10px 22px -12px rgba(44,108,176,.9);}
.btn-primary:hover{background:var(--c-brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px -8px rgba(44,108,176,.8);}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-ink);}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-brand-soft);}
.btn-ghost:active{transform:translateY(1px);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 10px 22px -12px rgba(242,100,60,.95);}
.btn-accent:hover{background:#DA4E28;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(1px);box-shadow:0 4px 12px -8px rgba(242,100,60,.9);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.btn[disabled],.btn.is-disabled{opacity:.6;cursor:not-allowed;transform:none;}

.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-brand);transition:color .18s;}
.text-link i{font-style:normal;transition:transform .18s;}
.text-link:hover{color:var(--c-brand-deep);text-decoration:underline;text-underline-offset:4px;}
.text-link:hover i{transform:translateX(3px);}
.text-link:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(245,248,252,.94);
  border-bottom:1px solid var(--c-line);
  transition:background .2s;
}
.site-header .container{padding-top:12px;padding-bottom:12px;}
.nav-card{
  position:relative;display:flex;align-items:center;gap:14px;
  background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  height:68px;padding:0 20px;
  transition:height .2s,box-shadow .2s;
}
.nav-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  border-radius:14px 14px 0 0;
  background:linear-gradient(90deg,var(--c-brand),var(--c-accent));
}
.site-header.is-scrolled .nav-card{height:60px;box-shadow:var(--sh-2);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--c-brand);
  display:grid;place-items:center;box-shadow:0 6px 14px -6px rgba(44,108,176,.85);
}
.brand-mark::after{content:"";width:10px;height:10px;border-radius:3px;background:var(--c-accent);}
.brand-text{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:-.4px;white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--c-brand);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:10px;}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:10px;font-size:15px;color:var(--c-ink-2);
  border:1px solid transparent;transition:.18s;
}
.nav-item svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{background:var(--c-brand-soft);border-color:rgba(44,108,176,.3);color:var(--c-brand);}
.nav-item.is-active{
  background:var(--c-brand-soft);color:var(--c-brand-deep);font-weight:600;
  box-shadow:inset 0 -2px 0 0 var(--c-accent);
}
.nav-item:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;background:#fff;
  border:1px solid var(--c-line);cursor:pointer;align-items:center;justify-content:center;
  transition:.18s;
}
.nav-toggle:hover{border-color:var(--c-brand);background:var(--c-brand-soft);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:.2s;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

.nav-drawer{
  display:none;margin-top:10px;background:var(--c-card);
  border:1px solid var(--c-line);border-radius:16px;box-shadow:var(--sh-2);padding:14px;
}
.nav-drawer.is-open{display:block;animation:drawerIn .2s ease;}
@keyframes drawerIn{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:translateY(0);}}
.nav-drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px;}
.nav-drawer-grid a{
  display:flex;align-items:center;gap:8px;padding:12px 14px;border-radius:10px;
  background:var(--c-bg);border:1px solid var(--c-line);font-size:14px;color:var(--c-ink);
  transition:.18s;
}
.nav-drawer-grid a:hover{border-color:var(--c-brand);color:var(--c-brand);}
.nav-drawer-grid a.is-active{background:var(--c-brand-soft);color:var(--c-brand-deep);font-weight:600;}

/* ---------- hero ---------- */
.hero{position:relative;padding:56px 0 44px;overflow:hidden;background:var(--c-bg);}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(44,108,176,.05) 0 2px,transparent 2px 22px);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;
  gap:48px;align-items:center;min-height:62vh;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;
  border-radius:var(--r-pill);background:var(--c-card);border:1px solid var(--c-line);
  color:var(--c-brand);font-size:13px;font-weight:600;box-shadow:var(--sh-1);
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
.hero-copy h1{margin:18px 0 18px;color:var(--c-ink);}
.hero-sub{font-size:17px;line-height:1.85;color:var(--c-ink-2);max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;}
.hero-points li{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--c-ink-3);}
.hero-points li::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--c-brand);flex:0 0 auto;
}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:14px;border:1px solid var(--c-line);box-shadow:var(--sh-1);
}
.hero-float{
  position:absolute;right:18px;bottom:-18px;background:#fff;
  border:1px solid var(--c-line);border-radius:12px;box-shadow:var(--sh-2);
  padding:14px 20px;display:flex;flex-direction:column;gap:2px;
}
.hero-float strong{font-size:24px;line-height:1.1;color:var(--c-accent);font-variant-numeric:tabular-nums;}
.hero-float span{font-size:13px;color:var(--c-ink-3);}

/* ---------- trust bar ---------- */
.trustbar{padding:0 0 56px;background:var(--c-bg);}
.trust-card{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
}
.trust-item{padding:24px;text-align:center;border-right:1px solid var(--c-line);}
.trust-item:last-child{border-right:0;}
.trust-item strong{
  display:block;font-size:30px;line-height:1.2;color:var(--c-brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.5px;
}
.trust-item span{font-size:13px;color:var(--c-ink-3);}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section.alt{background:#fff;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:42px;}
.section-head h2{position:relative;padding-top:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:0;width:32px;height:4px;border-radius:2px;background:var(--c-accent);
}
.section-desc{margin-top:12px;font-size:15px;color:var(--c-ink-3);max-width:640px;}

/* ---------- features ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.feat-main{
  grid-column:span 6;display:grid;grid-template-columns:1fr 1fr;height:320px;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;transition:transform .2s,box-shadow .2s;
}
.feat-main:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.feat-main-img{width:100%;height:100%;object-fit:cover;}
.feat-main-body{padding:28px;display:flex;flex-direction:column;gap:12px;}
.feat-main-body p{font-size:15px;line-height:1.75;color:var(--c-ink-2);}
.feat-main-body .text-link{margin-top:auto;}
.feat-side{grid-column:span 6;display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.feat-mini{
  display:flex;align-items:center;gap:16px;padding:22px;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform .2s,box-shadow .2s,border-color .2s;
}
.feat-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(44,108,176,.35);}
.feat-mini:hover h3{color:var(--c-brand);}
.feat-mini p{font-size:14px;color:var(--c-ink-3);line-height:1.6;}
.feat-ico{
  flex:0 0 auto;width:48px;height:48px;border-radius:12px;background:var(--c-brand-soft);
  display:grid;place-items:center;color:var(--c-brand);
}
.feat-ico svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.feat-mini h3{font-size:18px;margin-bottom:4px;transition:color .18s;}

/* ---------- dark wall ---------- */
.dark-wall{background:var(--c-dark);padding:80px 0;position:relative;overflow:hidden;}
.dark-wall::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.03) 0 2px,transparent 2px 26px);
}
.dark-wall .container{position:relative;z-index:1;}
.dark-wall h2{color:#fff;position:relative;padding-top:16px;}
.dark-wall h2::before{content:"";position:absolute;left:0;top:0;width:32px;height:4px;border-radius:2px;background:var(--c-accent);}
.dark-wall .section-desc{color:rgba(255,255,255,.6);}
.wall-track{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 16px;scroll-snap-type:x mandatory;}
.wall-track::-webkit-scrollbar{height:6px;}
.wall-track::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);border-radius:3px;}
.wall-card{
  flex:0 0 288px;scroll-snap-align:start;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);overflow:hidden;transition:transform .2s,background .2s,border-color .2s;
}
.wall-card:hover{transform:translateY(-3px);background:rgba(255,255,255,.1);border-color:rgba(242,100,60,.5);}
.wall-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.wall-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s;}
.wall-card:hover .wall-thumb img{transform:scale(1.05);}
.wall-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:44px;height:44px;border-radius:50%;background:rgba(242,100,60,.94);
  display:grid;place-items:center;opacity:0;transition:opacity .22s;
}
.wall-play::after{content:"";border-left:12px solid #fff;border-top:7px solid transparent;border-bottom:7px solid transparent;margin-left:3px;}
.wall-card:hover .wall-play{opacity:1;}
.wall-body{padding:18px 20px 22px;}
.wall-body h3{color:#fff;font-size:18px;margin-bottom:6px;}
.wall-body p{font-size:14px;color:rgba(255,255,255,.62);line-height:1.65;}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:48px;align-items:center;}
.flow-steps{grid-column:span 6;display:flex;flex-direction:column;gap:28px;}
.flow-step{display:flex;gap:18px;}
.flow-num{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;background:var(--c-accent);
  color:#fff;font-size:15px;font-weight:700;display:grid;place-items:center;
  font-variant-numeric:tabular-nums;box-shadow:0 8px 18px -8px rgba(242,100,60,.9);
}
.flow-step h3{margin-bottom:6px;}
.flow-step p{font-size:15px;color:var(--c-ink-2);line-height:1.75;}
.flow-visual{grid-column:span 6;position:relative;}
.flow-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:14px;border:1px solid var(--c-line);box-shadow:var(--sh-1);
}
.flow-float{
  position:absolute;right:18px;bottom:-20px;background:#fff;border:1px solid var(--c-line);
  border-radius:12px;box-shadow:var(--sh-2);padding:16px 20px;text-align:left;
}
.flow-float strong{display:block;font-size:22px;color:var(--c-brand);font-variant-numeric:tabular-nums;line-height:1.1;}
.flow-float span{font-size:13px;color:var(--c-ink-3);}

/* ---------- post grid ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:var(--c-card);
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .2s,box-shadow .2s;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.post-card:focus-visible{outline:2px solid var(--c-brand);outline-offset:3px;}
.post-cover{position:relative;aspect-ratio:16/9;background:var(--c-brand-soft);overflow:hidden;}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-tag{
  position:absolute;top:12px;right:12px;background:rgba(255,255,255,.94);
  color:var(--c-brand);font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--r-pill);
}
.post-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{
  font-size:19px;font-weight:600;line-height:1.45;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s;
}
.post-card:hover .post-title{color:var(--c-brand);}
.post-sum{
  font-size:15px;color:var(--c-ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-ink-3);
}
.post-more{display:inline-flex;align-items:center;gap:5px;color:var(--c-brand);font-weight:600;}
.post-more i{font-style:normal;transition:transform .18s;}
.post-card:hover .post-more i{transform:translateX(3px);}

.empty-state{
  background:var(--c-brand-soft);border:1px dashed var(--c-brand);
  border-radius:var(--r-card);padding:56px 24px;text-align:center;
}
.empty-state .empty-ico{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;background:#fff;
  display:grid;place-items:center;color:var(--c-brand);box-shadow:var(--sh-1);
}
.empty-state .empty-ico svg{width:26px;height:26px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{font-size:15px;color:var(--c-ink-2);margin-bottom:18px;}

/* ---------- social proof ---------- */
.proof-band{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;margin-bottom:32px;
}
.proof-band .trust-item{padding:26px 24px;}
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.proof-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:28px;display:flex;flex-direction:column;gap:16px;
  transition:transform .2s,box-shadow .2s;
}
.proof-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.proof-quote{
  width:32px;height:32px;border-radius:10px;background:var(--c-accent-soft);
  color:var(--c-accent);display:grid;place-items:center;font-size:20px;font-weight:700;line-height:1;
}
.proof-card p{font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.proof-author{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:2px;}
.proof-author strong{font-size:15px;color:var(--c-ink);}
.proof-author span{font-size:13px;color:var(--c-ink-3);}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:start;}
.faq-aside{grid-column:span 5;background:var(--c-brand-soft);border:1px solid var(--c-line);border-radius:var(--r-card);padding:30px;}
.faq-aside h3{margin-bottom:12px;}
.faq-aside p{font-size:15px;line-height:1.8;color:var(--c-ink-2);margin-bottom:20px;}
.faq-list{grid-column:span 7;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--c-card);border:1px solid var(--c-line);border-radius:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s;}
.faq-item:hover{border-color:rgba(44,108,176,.35);}
.faq-item.is-open{box-shadow:var(--sh-1);border-color:rgba(44,108,176,.4);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);transition:color .18s;
}
.faq-q:hover{color:var(--c-brand);}
.faq-q:focus-visible{outline:2px solid var(--c-accent);outline-offset:-2px;}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;background:var(--c-bg);
  display:grid;place-items:center;position:relative;transition:background .2s;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-ink-2);border-radius:2px;transition:transform .22s,background .2s;
}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;}
.faq-item.is-open .faq-icon{background:var(--c-accent);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2);}
.faq-item.is-open .faq-a{max-height:320px;}
.faq-item.is-open .faq-a-inner{background:var(--c-brand-soft);margin:0;padding:18px 22px;border-radius:0 0 10px 10px;}

/* ---------- cta ---------- */
.cta-wrap{padding:0 0 96px;}
.cta-card{
  background:var(--c-brand-soft);border:1px solid rgba(44,108,176,.22);
  border-radius:18px;padding:48px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.cta-card h2{margin-bottom:14px;}
.cta-card .cta-lead{font-size:15px;line-height:1.8;color:var(--c-ink-2);margin-bottom:22px;}
.cta-points{display:flex;flex-direction:column;gap:10px;}
.cta-points li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--c-ink-2);}
.cta-points li::before{content:"";flex:0 0 auto;width:6px;height:6px;border-radius:2px;background:var(--c-accent);margin-top:9px;}
.cta-form{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);}
.form-label{display:block;font-size:13px;color:var(--c-ink-2);font-weight:600;margin-bottom:8px;}
.form-label .req{color:var(--c-accent);}
.form-row{display:flex;gap:12px;}
.form-input{
  flex:1;height:46px;border-radius:var(--r-input);border:1px solid var(--c-line);
  padding:0 14px;font-size:15px;background:#fff;outline:none;
  transition:border-color .18s,box-shadow .18s;
}
.form-input::placeholder{color:#9FAFC0;}
.form-input:focus{border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(44,108,176,.12);}
.form-note{margin-top:12px;font-size:13px;color:var(--c-ink-3);}
.form-note.is-error{color:var(--err);}
.form-note.is-ok{
  color:var(--ok);background:rgba(31,157,99,.08);
  padding:10px 14px;border-radius:10px;
}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.72);padding:64px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand span{font-size:18px;font-weight:700;color:#fff;letter-spacing:-.4px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px;}
.footer-title{font-size:14px;font-weight:600;color:rgba(255,255,255,.7);margin-bottom:16px;letter-spacing:.2px;}
.footer-links a{
  display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;
  border-left:2px solid transparent;transition:color .18s,padding-left .18s,border-color .18s;
}
.footer-links a:hover{color:#fff;padding-left:10px;border-left-color:var(--c-accent);}
.footer-links a:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.footer-meta{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);}
.footer-meta strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- mobile bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:150;display:none;
  align-items:center;justify-content:space-between;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -8px 24px -16px rgba(18,38,63,.45);
}
.mobile-bar p{font-size:13px;color:var(--c-ink-2);line-height:1.4;}
.mobile-bar p strong{display:block;color:var(--c-ink);font-size:14px;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-grid{gap:36px;}
  .wall-card{flex:0 0 264px;}
}
@media (max-width:1023px){
  .container{padding:0 20px;}
  .section{padding:72px 0;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-card{height:62px;padding:0 16px;}
  .nav-right .btn{display:none;}
  .hero{padding:36px 0 32px;}
  .hero-grid{grid-template-columns:1fr;min-height:auto;gap:40px;}
  .hero-visual img{aspect-ratio:16/9;}
  .hero-float{right:14px;bottom:-16px;padding:12px 16px;}
  .trust-card{grid-template-columns:repeat(2,1fr);}
  .trust-item:nth-child(2){border-right:0;}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-bottom:1px solid var(--c-line);}
  .feat-main{grid-column:span 12;height:auto;}
  .feat-main-img{height:100%;min-height:280px;}
  .feat-side{grid-column:span 12;grid-template-rows:auto auto;}
  .flow-grid{gap:56px;}
  .flow-steps,.flow-visual{grid-column:span 12;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .proof-grid{grid-template-columns:repeat(2,1fr);}
  .proof-grid .proof-card:last-child{grid-column:span 2;}
  .faq-aside,.faq-list{grid-column:span 12;}
  .faq-aside{order:2;}
  .cta-card{grid-template-columns:1fr;padding:36px;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:76px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:30px;}
  .brand-text{font-size:16px;}
  .hero-sub{font-size:16px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .trust-card{grid-template-columns:1fr 1fr;}
  .feat-main{grid-template-columns:1fr;height:auto;}
  .feat-main-img{height:200px;min-height:0;}
  .post-grid{grid-template-columns:1fr;}
  .proof-band{grid-template-columns:1fr;}
  .proof-band .trust-item{border-right:0;border-bottom:1px solid var(--c-line);}
  .proof-band .trust-item:last-child{border-bottom:0;}
  .proof-grid{grid-template-columns:1fr;}
  .proof-grid .proof-card:last-child{grid-column:span 1;}
  .flow-float{right:12px;bottom:-16px;padding:12px 16px;}
  .cta-card{padding:26px;}
  .form-row{flex-direction:column;}
  .form-row .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-desc{max-width:none;}
}
@media (max-width:479px){
  h1{font-size:28px;}
  .hero-badge{font-size:12px;}
  .btn{padding:13px 20px;font-size:15px;}
  .nav-card{padding:0 14px;}
  .brand-mark{width:28px;height:28px;}
  .trust-item strong{font-size:24px;}
  .wall-card{flex:0 0 82vw;}
}

/* roulang page: article */
:root{
  --c-brand:#2C6CB0;
  --c-brand-deep:#1D4E86;
  --c-brand-soft:#EAF2FB;
  --c-accent:#F2643C;
  --c-accent-soft:#FFF1EA;
  --c-ink:#121A24;
  --c-ink-2:#45566B;
  --c-ink-3:#7C8CA0;
  --c-line:#E4EAF2;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-ok:#1F9D63;
  --c-warn:#D98A0B;
  --c-err:#D0453A;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(18,38,63,.06),0 8px 24px -12px rgba(18,38,63,.12);
  --sh-hover:0 2px 4px rgba(18,38,63,.08),0 18px 40px -16px rgba(18,38,63,.22);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-brand);text-decoration:none;transition:color .18s ease}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--c-ink);line-height:1.35;font-weight:700}
p{margin:0}
svg{flex:0 0 auto}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--c-card)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-title{position:relative;padding-left:16px;font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3}
.section-title::before{content:"";position:absolute;left:0;top:.32em;width:32px;height:4px;border-radius:2px;background:var(--c-accent)}
.section-sub{margin-top:10px;font-size:15px;color:var(--c-ink-3);max-width:640px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 8px 20px -12px rgba(44,108,176,.9)}
.btn-primary:hover{background:var(--c-brand-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}
.btn-outline{background:var(--c-card);border-color:var(--c-line);color:var(--c-ink)}
.btn-outline:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-brand-soft)}
.btn-outline:active{transform:translateY(1px)}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px -12px rgba(242,100,60,.9)}
.btn-accent:hover{background:#DC5027;transform:translateY(-1px)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-sm{padding:10px 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-brand)}
.link-arrow svg{transition:transform .18s ease}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}
.link-arrow:hover svg{transform:translateX(3px)}

/* 标签与徽章 */
.tag{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:13px;font-weight:600;background:var(--c-brand-soft);color:var(--c-brand-deep)}
.tag-accent{background:var(--c-accent-soft);color:#C1421F}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:var(--c-card);border:1px solid var(--c-line);font-size:13px;font-weight:600;color:var(--c-brand-deep)}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:80;background:var(--c-bg);border-bottom:1px solid var(--c-line);transition:box-shadow .2s ease}
.nav-wrap{padding:10px 0;transition:padding .2s ease}
.nav-shell{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:68px;padding:0 20px;background:var(--c-card);
  border-radius:var(--r-card);box-shadow:var(--sh-card);
  overflow:hidden;transition:height .2s ease,box-shadow .2s ease;
}
.nav-shell::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,var(--c-brand),var(--c-accent))}
.site-header.is-scrolled .nav-shell{height:60px;box-shadow:var(--sh-hover)}
.site-header.is-scrolled .nav-wrap{padding:8px 0}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-size:18px;font-weight:700;letter-spacing:.2px}
.brand-mark{position:relative;width:32px;height:32px;border-radius:9px;background:var(--c-brand);flex:0 0 auto}
.brand-mark::after{content:"";position:absolute;right:5px;bottom:5px;width:9px;height:9px;border-radius:2px;background:var(--c-accent)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-item{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--c-ink-2);
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.nav-item svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:var(--c-brand-soft);color:var(--c-brand);box-shadow:inset 0 0 0 1px rgba(44,108,176,.3)}
.nav-item.is-active{background:var(--c-brand-soft);color:var(--c-brand)}
.nav-item.is-active::after{content:"";position:absolute;left:50%;bottom:3px;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:var(--c-accent)}
.nav-cta{max-width:120px;padding:10px 18px;font-size:15px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;
  border:1px solid var(--c-line);border-radius:10px;background:var(--c-card);cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--c-brand-soft);border-color:var(--c-brand)}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--c-ink);stroke-width:1.8;stroke-linecap:round}
.nav-drawer{display:none;margin-top:10px;padding:16px;background:var(--c-card);border-radius:16px;box-shadow:var(--sh-hover)}
.nav-drawer.is-open{display:block}
.nav-drawer .drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.nav-drawer .nav-item{background:var(--c-bg);justify-content:flex-start}
.nav-drawer .drawer-cta{margin-top:12px;width:100%}

/* 面包屑 */
.crumbs{padding:24px 0 0;font-size:13px;color:var(--c-ink-3)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--c-ink-3);opacity:.6}
.crumbs a{color:var(--c-ink-3)}
.crumbs a:hover{color:var(--c-brand)}
.crumbs .now{color:var(--c-ink-2);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block}

/* 文章头 */
.article-head{padding:28px 0 0}
.article-head-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:32px 32px 28px;position:relative;overflow:hidden;
}
.article-head-card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,var(--c-brand),var(--c-accent))}
.article-channel{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--c-brand-deep);letter-spacing:1px}
.article-channel::before{content:"";width:24px;height:4px;border-radius:2px;background:var(--c-accent)}
.article-title{margin-top:14px;font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1.2;letter-spacing:-.5px;color:var(--c-ink)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:18px;font-size:13px;color:var(--c-ink-3)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.article-cover{margin:24px 0 0;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);background:var(--c-bg)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* 正文布局 */
.article-main{padding:40px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:32px;align-items:start}
.article-panel{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:40px 40px 32px}
.article-body{max-width:780px;margin:0 auto;font-size:16px;line-height:1.9;color:var(--c-ink-2)}
.article-body p{margin:0 0 1.5em}
.article-body h2{position:relative;padding-left:16px;margin:40px 0 16px;font-size:clamp(22px,2.4vw,28px);color:var(--c-ink);line-height:1.35}
.article-body h2::before{content:"";position:absolute;left:0;top:.35em;width:4px;height:1em;border-radius:2px;background:var(--c-brand)}
.article-body h3{margin:28px 0 12px;font-size:20px;font-weight:600;color:var(--c-ink)}
.article-body ul,.article-body ol{margin:0 0 1.5em;list-style:none}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.6em}
.article-body ul li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-brand)}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:.6em;counter-increment:li}
.article-body ol li::before{content:counter(li);position:absolute;left:0;top:.35em;width:20px;height:20px;border-radius:50%;background:var(--c-accent);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--c-brand-soft);
  border-left:3px solid var(--c-accent);border-radius:8px;color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);border:1px solid var(--c-line);margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption,.article-body em{display:block;margin-top:8px;font-size:13px;color:var(--c-ink-3);text-align:center;font-style:normal}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--c-line);border-radius:12px;overflow:hidden}
.article-body thead th{background:var(--c-brand-soft);color:var(--c-ink);font-weight:600}
.article-body th,.article-body td{padding:12px 14px;border:0;border-bottom:1px solid var(--c-line);text-align:left}
.article-body tbody tr:nth-child(even){background:#F8FAFD}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body a{font-weight:600;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-body strong{color:var(--c-ink)}

/* 空态 */
.article-empty{max-width:640px;margin:0 auto;text-align:center;padding:32px 0}
.article-empty .empty-ico{width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--c-brand-soft);display:flex;align-items:center;justify-content:center}
.article-empty .empty-ico svg{width:28px;height:28px;fill:none;stroke:var(--c-brand);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.article-empty h2{font-size:24px;margin-bottom:12px}
.article-empty p{margin-bottom:22px;color:var(--c-ink-2)}

/* 文末标签与分享 */
.post-foot{margin-top:40px;padding-top:24px;border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.post-tags{display:flex;flex-wrap:wrap;gap:10px}
.post-share{display:flex;align-items:center;gap:10px}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:10px;
  border:1px solid var(--c-line);background:var(--c-card);font-size:14px;font-weight:600;color:var(--c-ink-2);cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.share-btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.share-btn:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-brand-soft)}

/* 侧栏 */
.side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:22px}
.side-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;color:var(--c-ink);margin-bottom:14px}
.side-title::before{content:"";width:22px;height:4px;border-radius:2px;background:var(--c-accent)}
.toc-nav ol{list-style:none;counter-reset:toc}
.toc-nav a{display:block;padding:8px 0 8px 14px;border-left:2px solid var(--c-line);font-size:14px;color:var(--c-ink-2);line-height:1.6}
.toc-nav a:hover{color:var(--c-brand);border-left-color:var(--c-brand);background:var(--c-brand-soft);border-radius:0 8px 8px 0}
.hot-list{display:flex;flex-direction:column;gap:14px}
.hot-item{display:grid;grid-template-columns:64px 1fr;gap:12px;align-items:center}
.hot-item img{width:64px;height:48px;object-fit:cover;border-radius:8px;border:1px solid var(--c-line)}
.hot-item h4{font-size:14px;font-weight:600;line-height:1.5;color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-item:hover h4{color:var(--c-brand)}

/* 前后篇 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.post-nav-card{
  display:flex;flex-direction:column;gap:8px;padding:22px;background:var(--c-card);
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-nav-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#CFE0F2}
.post-nav-card .k{font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.5px}
.post-nav-card .t{font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.5}
.post-nav-card .d{font-size:13px;color:var(--c-ink-3)}
.post-nav-card.next{align-items:flex-end;text-align:right}

/* 推荐卡 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-card{
  display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#CFE0F2}
.rec-thumb{position:relative;background:var(--c-bg)}
.rec-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rec-thumb .tag{position:absolute;right:12px;top:12px;background:rgba(255,255,255,.92);color:var(--c-brand-deep);box-shadow:0 2px 8px rgba(18,38,63,.12)}
.rec-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{font-size:19px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-card:hover h3{color:var(--c-brand)}
.rec-body p{font-size:15px;line-height:1.7;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-ink-3)}
.rec-meta svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* CTA 条 */
.cta-band{
  margin-top:64px;padding:40px;border-radius:var(--r-card);background:var(--c-brand-soft);
  border:1px solid #D6E5F6;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-band p{font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{margin-top:96px;background:#101B28;color:rgba(255,255,255,.72);padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;margin-bottom:16px}
.footer-mark{position:relative;width:32px;height:32px;border-radius:9px;background:var(--c-brand);flex:0 0 auto}
.footer-mark::after{content:"";position:absolute;right:5px;bottom:5px;width:9px;height:9px;border-radius:2px;background:var(--c-accent)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:rgba(255,255,255,.7);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);border-left:2px solid transparent;padding-left:0;transition:color .18s ease,padding-left .18s ease,border-color .18s ease}
.footer-links a:hover{color:#fff;padding-left:8px;border-left-color:var(--c-accent)}
.footer-meta{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62)}
.footer-meta strong{color:rgba(255,255,255,.85);font-weight:600}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5)}

/* 移动端转化条 */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  align-items:center;justify-content:space-between;gap:12px;
  height:64px;padding:0 16px;background:var(--c-card);
  border-top:1px solid var(--c-line);box-shadow:0 -8px 24px -16px rgba(18,38,63,.4);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-bar span{font-size:14px;font-weight:600;color:var(--c-ink)}

/* 响应式 */
@media (max-width:1279px){
  .container{padding:0 20px}
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:24px}
}
@media (max-width:1023px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:72px 0}
  .article-layout{grid-template-columns:1fr}
  .side{position:static}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-panel{padding:28px 24px}
  .mobile-bar{display:flex}
  body{padding-bottom:64px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .nav-shell{height:60px;padding:0 14px}
  .brand{font-size:16px}
  .article-head-card{padding:24px 20px}
  .article-main{padding:28px 0 64px}
  .article-panel{padding:22px 18px}
  .article-body{font-size:15.5px;line-height:1.75}
  .post-nav{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr}
  .crumbs{padding-top:16px}
  .crumbs .now{max-width:200px}
}
@media (max-width:479px){
  body{font-size:15px}
  .btn{padding:13px 20px;font-size:14.5px}
  .article-title{font-size:28px}
  .mobile-bar span{font-size:13px}
}

/* roulang page: category1 */
:root{
  --c-brand:#2C6CB0;
  --c-brand-deep:#1D4E86;
  --c-brand-soft:#EAF2FB;
  --c-accent:#F2643C;
  --c-accent-soft:#FFF1EA;
  --c-ink:#121A24;
  --c-ink-2:#45566B;
  --c-ink-3:#7C8CA0;
  --c-line:#E4EAF2;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-navy:#101B28;
  --c-success:#1F9D63;
  --c-warn:#D98A0B;
  --c-danger:#D0453A;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(18,38,63,.06),0 8px 24px -12px rgba(18,38,63,.12);
  --sh-2:0 2px 4px rgba(18,38,63,.08),0 18px 40px -16px rgba(18,38,63,.22);
  --sec:96px;
}
*,*::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","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-2);
  background:var(--c-bg);
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border:1px solid var(--c-line)}
a{color:var(--c-brand);text-decoration:none}
a:hover{text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(245,248,252,.92);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px -20px rgba(18,38,63,.6)}
.nav-card{
  position:relative;
  display:flex;align-items:center;gap:18px;
  height:68px;margin:12px 0;padding:0 20px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:height .2s ease,box-shadow .2s ease;
  overflow:hidden;
}
.nav-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--c-brand) 0%,var(--c-brand) 55%,var(--c-accent) 100%);
}
.site-header.is-scrolled .nav-card{height:60px;box-shadow:var(--sh-2)}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);font-size:18px;font-weight:700;letter-spacing:-.2px;white-space:nowrap;flex:none}
.brand-mark{position:relative;width:32px;height:32px;border-radius:9px;background:var(--c-brand);flex:none;box-shadow:0 6px 14px -8px rgba(44,108,176,.9)}
.brand-mark::after{content:"";position:absolute;right:5px;bottom:5px;width:10px;height:10px;border-radius:3px;background:var(--c-accent)}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-btn);
  font-size:15px;color:var(--c-ink-2);
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
  position:relative;
}
.nav-item svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.nav-item:hover{background:var(--c-brand-soft);border-color:rgba(44,108,176,.3);color:var(--c-brand)}
.nav-item:hover svg{stroke:var(--c-brand)}
.nav-item.is-active{background:var(--c-brand-soft);color:var(--c-brand);font-weight:600;border-color:rgba(44,108,176,.18)}
.nav-item.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--c-accent)}
.nav-cta{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  min-width:104px;max-width:120px;height:42px;padding:0 18px;
  border-radius:var(--r-btn);background:var(--c-brand);color:#fff;
  font-size:15px;font-weight:700;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
  box-shadow:0 10px 20px -14px rgba(44,108,176,.95);
}
.nav-cta:hover{background:var(--c-brand-deep);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(1px);box-shadow:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;align-items:center;justify-content:center;
  transition:border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{border-color:var(--c-brand);background:var(--c-brand-soft)}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:background .18s ease}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-panel{
  display:none;
  border:1px solid var(--c-line);border-radius:16px;background:#fff;
  box-shadow:var(--sh-2);padding:16px;margin:0 0 14px;
}
.mobile-panel.is-open{display:block}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mobile-grid .nav-item{width:100%;justify-content:flex-start;background:var(--c-bg);border-color:var(--c-line)}
.mobile-cta{display:block;text-align:center;margin-top:14px;height:46px;line-height:46px;border-radius:var(--r-btn);background:var(--c-accent);color:#fff;font-weight:700}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);font-size:16px;font-weight:700;
  border:1px solid transparent;transition:all .18s ease;
}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 14px 26px -18px rgba(44,108,176,1)}
.btn-primary:hover{background:var(--c-brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:#fff;color:var(--c-ink);border-color:var(--c-line)}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-brand-soft)}
.btn-ghost:active{transform:translateY(1px)}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 14px 26px -18px rgba(242,100,60,1)}
.btn-accent:hover{background:#DE5530;transform:translateY(-1px)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn[disabled],.btn.is-disabled{opacity:.6;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-brand)}
.link-more svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}
.link-more:hover{text-decoration:underline;text-underline-offset:4px}
.link-more:hover svg{transform:translateX(3px)}

/* ============ page hero ============ */
.page-hero{position:relative;padding:56px 0 0;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0 0 auto 0;height:100%;
  background-image:repeating-linear-gradient(115deg,rgba(44,108,176,.05) 0 2px,transparent 2px 46px);
  pointer-events:none;
}
.breadcrumb{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);margin-bottom:22px}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-brand)}
.breadcrumb .sep{color:var(--c-line)}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:var(--c-brand-soft);color:var(--c-brand);
  font-size:13px;font-weight:600;letter-spacing:.2px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.page-title{
  margin:20px 0 18px;
  font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1.2;letter-spacing:-.5px;color:var(--c-ink);
}
.page-title em{font-style:normal;color:var(--c-brand);white-space:nowrap}
.lead{font-size:17px;line-height:1.85;color:var(--c-ink-2);max-width:56ch}
.hero-points{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px}
.point{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--c-ink-3)}
.point svg{width:16px;height:16px;fill:none;stroke:var(--c-accent);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-1);background:var(--c-card)}
.float-card{
  position:absolute;right:-10px;bottom:-18px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:14px 20px;text-align:left;
}
.float-num{font-size:26px;font-weight:700;color:var(--c-brand);font-variant-numeric:tabular-nums;line-height:1.2}
.float-label{font-size:13px;color:var(--c-ink-3)}

/* ============ stats ============ */
.stats-band{margin-top:64px}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.stat{padding:26px 24px;border-left:1px solid var(--c-line)}
.stat:first-child{border-left:0}
.stat-num{font-size:clamp(24px,2.6vw,34px);font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-num i{font-style:normal;color:var(--c-accent);font-size:18px;margin-left:4px}
.stat-label{font-size:13px;color:var(--c-ink-3);margin-top:6px}

/* ============ sections ============ */
.section{padding:var(--sec) 0}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.section-title{position:relative;padding-left:18px;font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3;color:var(--c-ink);letter-spacing:-.3px}
.section-title::before{content:"";position:absolute;left:0;top:.42em;width:4px;height:32px;border-radius:2px;background:var(--c-accent)}
.section-sub{max-width:62ch;margin-top:12px;font-size:15px;color:var(--c-ink-3);padding-left:18px}

/* ============ card wall ============ */
.wall{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start}
.wall-main{grid-column:span 8;display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feature-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(44,108,176,.35)}
.feature-card:focus-within{box-shadow:0 0 0 2px var(--c-brand),var(--sh-1)}
.fc-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-brand-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.fc-icon svg{width:22px;height:22px;fill:none;stroke:var(--c-brand);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.fc-title{font-size:20px;font-weight:600;color:var(--c-ink);line-height:1.4;margin-bottom:8px}
.fc-text{font-size:15px;line-height:1.7;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.feature-card .link-more{margin-top:auto}
.wall-aside{grid-column:span 4;position:sticky;top:96px}
.aside-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:26px 24px;
}
.aside-title{font-size:18px;font-weight:600;color:var(--c-ink);padding-bottom:14px;border-bottom:1px solid var(--c-line);margin-bottom:6px}
.aside-list{display:flex;flex-direction:column}
.aside-item{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px dashed var(--c-line)}
.aside-item:last-child{border-bottom:0}
.aside-key{font-size:14px;color:var(--c-ink-2)}
.aside-val{font-size:15px;font-weight:700;color:var(--c-brand);font-variant-numeric:tabular-nums;white-space:nowrap}
.aside-note{margin-top:18px;padding:14px 16px;border-radius:12px;background:var(--c-accent-soft);font-size:13px;line-height:1.7;color:#8A3D26}
.aside-card .btn{width:100%;margin-top:18px}

/* ============ dark spotlight ============ */
.dark-band{background:var(--c-navy);color:rgba(255,255,255,.72);padding:var(--sec) 0;position:relative;overflow:hidden}
.dark-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.035) 0 2px,transparent 2px 52px);
  pointer-events:none;
}
.dark-band .section-title{color:#fff}
.dark-band .section-sub{color:rgba(255,255,255,.55)}
.spotlight-row{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.spotlight-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .18s ease,border-color .18s ease,background .18s ease;
}
.spotlight-card:hover{transform:translateY(-3px);border-color:rgba(242,100,60,.6);background:rgba(255,255,255,.08)}
.sc-media{position:relative}
.sc-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border:0;border-bottom:1px solid rgba(255,255,255,.1)}
.sc-tag{
  position:absolute;right:12px;top:12px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.9);color:var(--c-brand);
  font-size:12px;font-weight:600;line-height:1.6;
}
.sc-body{padding:18px 18px 20px}
.sc-title{font-size:16px;font-weight:600;color:#fff;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sc-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;font-size:13px;color:rgba(255,255,255,.5)}
.sc-time{font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums}

/* ============ split ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-1)}
.split-copy h2{margin-bottom:16px}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:24px}
.check-list li{display:flex;gap:12px;font-size:15px;line-height:1.75;color:var(--c-ink-2)}
.check-list svg{width:20px;height:20px;flex:none;margin-top:5px;fill:none;stroke:var(--c-accent);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.check-list strong{color:var(--c-ink);font-weight:600}

/* ============ faq ============ */
.faq-wrap{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start}
.faq-col{grid-column:span 5;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item.is-open{border-color:rgba(44,108,176,.4);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 18px;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:background .18s ease;
}
.faq-q:hover{background:var(--c-brand-soft)}
.faq-item.is-open .faq-q{color:var(--c-brand)}
.faq-icon{
  flex:none;width:28px;height:28px;border-radius:8px;background:var(--c-brand-soft);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;color:var(--c-brand);line-height:1;
}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{padding:0 18px 18px;font-size:15px;line-height:1.8;color:var(--c-ink-2);background:var(--c-brand-soft)}
.faq-side{grid-column:span 7}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:32px;
}
.side-card h3{font-size:22px;font-weight:600;color:var(--c-ink);margin-bottom:14px}
.side-card p{font-size:15px;line-height:1.85;color:var(--c-ink-2)}
.side-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.side-fact{padding:16px;border-radius:12px;background:var(--c-bg);border:1px solid var(--c-line)}
.side-fact b{display:block;font-size:22px;font-weight:700;color:var(--c-brand);font-variant-numeric:tabular-nums;line-height:1.3}
.side-fact span{font-size:13px;color:var(--c-ink-3)}

/* ============ cta ============ */
.cta-band{padding:0 0 var(--sec)}
.cta-inner{
  position:relative;overflow:hidden;
  background:var(--c-brand-soft);border:1px solid rgba(44,108,176,.2);
  border-radius:20px;padding:48px;
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.cta-inner::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,100,60,.16),transparent 68%);
}
.cta-copy{position:relative}
.cta-copy h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;color:var(--c-ink);line-height:1.35;margin-bottom:14px}
.cta-copy p{font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:46ch}
.cta-form{position:relative;display:grid;gap:14px}
.field{display:grid;gap:8px}
.field label{font-size:13px;color:var(--c-ink-2)}
.field label .req{color:var(--c-accent)}
.field input{
  height:46px;padding:0 14px;border-radius:var(--r-input);
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(44,108,176,.12)}
.form-tip{font-size:13px;color:var(--c-ink-3)}
.form-msg{font-size:13px;color:var(--c-success);display:none}
.form-msg.is-show{display:block}

/* ============ footer ============ */
.site-footer{background:var(--c-navy);color:rgba(255,255,255,.62);padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.55);max-width:34ch}
.footer-title{font-size:14px;font-weight:600;color:rgba(255,255,255,.7);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a,.footer-meta{font-size:14px;color:rgba(255,255,255,.58);line-height:1.9}
.footer-links a{position:relative;padding-left:0;transition:color .18s ease,padding-left .18s ease}
.footer-links a:hover{color:#fff;padding-left:10px}
.footer-links a::before{content:"";position:absolute;left:0;top:.72em;width:2px;height:12px;background:var(--c-accent);opacity:0;transition:opacity .18s ease}
.footer-links a:hover::before{opacity:1}
.footer-meta strong{color:rgba(255,255,255,.82);font-weight:600}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ mobile bar ============ */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -10px 26px -20px rgba(18,38,63,.7);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:14px;
}
.mobile-bar-text{font-size:14px;color:var(--c-ink);font-weight:600;line-height:1.5}
.mobile-bar-text span{display:block;font-size:12px;color:var(--c-ink-3);font-weight:400}
.mobile-bar .btn{padding:11px 20px;font-size:15px;flex:none}

/* ============ responsive ============ */
@media (min-width:1280px){
  .container{max-width:1240px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:2}
  .float-card{right:12px;bottom:-16px}
  .wall-main{grid-column:span 12}
  .wall-aside{grid-column:span 12;position:static}
  .spotlight-row{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .faq-col,.faq-side{grid-column:span 12}
  .cta-inner{grid-template-columns:1fr;padding:36px;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .mobile-bar{display:flex}
  body{padding-bottom:64px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .container{padding:0 16px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat{border-left:0;border-top:1px solid var(--c-line);padding:20px}
  .stat:nth-child(odd){border-right:1px solid var(--c-line)}
  .stat:nth-child(-n+2){border-top:0}
  .wall-main{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .spotlight-row{grid-template-columns:1fr}
  .side-facts{grid-template-columns:1fr}
  .cta-inner{padding:28px 22px}
  .footer-grid{grid-template-columns:1fr}
  .page-hero{padding-top:36px}
  .lead{font-size:16px}
  .nav-card{padding:0 14px;height:60px}
  .brand{font-size:16px}
}
@media (max-width:479px){
  body{font-size:15.5px;line-height:1.75}
  .btn{padding:13px 20px;font-size:15px;width:100%}
  .mobile-bar .btn{width:auto}
  .feature-card{padding:22px 20px}
  .aside-card,.side-card{padding:22px 20px}
  .section-title::before{height:26px}
  .float-card{position:static;margin-top:14px}
}

/* roulang page: category2 */
/* ================= 设计变量 ================= */
:root{
  --c-brand:#2C6CB0;
  --c-brand-deep:#1D4E86;
  --c-brand-soft:#EAF2FB;
  --c-accent:#F2643C;
  --c-accent-soft:#FFF1EA;
  --c-ink:#121A24;
  --c-ink-2:#45566B;
  --c-ink-3:#7C8CA0;
  --c-line:#E4EAF2;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-ok:#1F9D63;
  --c-ok-soft:rgba(31,157,99,.08);
  --c-warn:#D98A0B;
  --c-err:#D0453A;
  --c-err-soft:rgba(208,69,58,.08);
  --c-footer:#101B28;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,38,63,.06), 0 8px 24px -12px rgba(18,38,63,.12);
  --sh-2:0 2px 4px rgba(18,38,63,.08), 0 18px 40px -16px rgba(18,38,63,.22);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:96px;
  --container:1200px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ================= 基础 reset ================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
::selection{background:var(--c-brand-soft);color:var(--c-brand-deep);}

/* ================= 容器与通用 ================= */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--sp-6) 0;}
.section--white{background:var(--c-card);}
.section--soft{background:var(--c-bg);}
.sec-head{max-width:760px;margin-bottom:var(--sp-5);}
.sec-head .bar{display:block;width:32px;height:4px;border-radius:2px;background:var(--c-accent);margin-bottom:14px;}
.sec-head h2{
  font-size:clamp(24px,3vw,36px);
  font-weight:700;
  line-height:1.3;
  color:var(--c-ink);
  letter-spacing:-.3px;
}
.sec-head p{margin-top:14px;font-size:16px;color:var(--c-ink-2);max-width:62ch;}
.num{font-variant-numeric:tabular-nums;}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  border:1px solid transparent;
  transition:background-color .2s ease, color .2s ease, border-color .2s ease, transform .16s ease, box-shadow .2s ease;
  white-space:nowrap;
}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.6;cursor:not-allowed;transform:none;}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 10px 22px -14px rgba(44,108,176,.9);}
.btn-primary:hover{background:var(--c-brand-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px -8px rgba(44,108,176,.9);}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-ink);}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-brand-soft);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 10px 22px -14px rgba(242,100,60,.9);}
.btn-accent:hover{background:#DE5329;transform:translateY(-1px);}
.btn-accent:active{transform:translateY(1px);box-shadow:0 4px 10px -8px rgba(242,100,60,.9);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-brand);
}
.link-more .arrow{transition:transform .2s ease;}
.link-more:hover{text-decoration:underline;text-underline-offset:4px;}
.link-more:hover .arrow{transform:translateX(3px);}

/* ================= 头部导航 ================= */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(245,248,252,.97);
  border-bottom:1px solid var(--c-line);
  padding:10px 0;
  transition:padding .2s ease, background-color .2s ease;
}
.site-header.is-scrolled{padding:6px 0;}
.header-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  height:68px;
  padding:0 20px;
  display:flex;
  align-items:center;
  gap:18px;
  transition:height .2s ease, box-shadow .2s ease;
}
.site-header.is-scrolled .header-card{height:60px;box-shadow:var(--sh-2);}
.header-card::before{
  content:"";
  position:absolute;
  left:24px;
  right:24px;
  top:10px;
  height:3px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-accent));
  opacity:0;
  pointer-events:none;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:32px;
  height:32px;
  border-radius:9px;
  background:var(--c-brand);
  position:relative;
  flex:0 0 auto;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16);
}
.brand-mark::after{
  content:"";
  position:absolute;
  right:6px;
  bottom:6px;
  width:9px;
  height:9px;
  border-radius:3px;
  background:var(--c-accent);
}
.brand-text{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:-.2px;}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
  flex:1 1 auto;
}
.nav-item{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--c-ink-2);
  border:1px solid transparent;
  transition:background-color .2s ease, color .2s ease, border-color .2s ease;
}
.nav-item svg{
  width:20px;
  height:20px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.7;
  stroke-linecap:round;
  stroke-linejoin:round;
  flex:0 0 auto;
}
.nav-item:hover{
  background:var(--c-brand-soft);
  border-color:rgba(44,108,176,.3);
  color:var(--c-brand);
}
.nav-item:active{transform:translateY(1px);}
.nav-item.is-active{
  background:var(--c-brand-soft);
  color:var(--c-brand);
  font-weight:600;
}
.nav-item.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  transform:translateX(-50%);
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-accent);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto;}
.header-actions .btn{min-width:104px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  background:#fff;
  transition:border-color .2s ease, background-color .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle:hover{border-color:var(--c-brand);background:var(--c-brand-soft);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 移动抽屉 */
.mobile-drawer{
  display:none;
  margin-top:10px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:16px;
  box-shadow:var(--sh-2);
  padding:18px;
}
.mobile-drawer.is-open{display:block;}
.mobile-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.mobile-nav .nav-item{
  flex-direction:row;
  justify-content:flex-start;
  padding:12px 12px;
  border:1px solid var(--c-line);
  background:#fff;
  font-size:14px;
}
.mobile-nav .nav-item.is-active{border-color:rgba(44,108,176,.35);}
.mobile-drawer .btn{margin-top:14px;}

/* ================= 页头区 ================= */
.cat-hero{
  position:relative;
  padding:56px 0 84px;
  background:
    repeating-linear-gradient(115deg, rgba(44,108,176,.045) 0 2px, transparent 2px 16px),
    var(--c-bg);
  overflow:hidden;
}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-ink-3);
  margin-bottom:22px;
}
.crumbs a{transition:color .2s ease;}
.crumbs a:hover{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px;}
.crumb-current{color:var(--c-ink-2);}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:var(--c-accent-soft);
  color:#C6461F;
  font-size:13px;
  font-weight:600;
  line-height:1.6;
}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);}
.cat-hero h1{
  margin-top:18px;
  font-size:clamp(30px,4.6vw,52px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.5px;
  color:var(--c-ink);
}
.cat-hero .lead{
  margin-top:20px;
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-2);
  max-width:56ch;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:28px;
}
.trust-row li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-ink-3);
}
.trust-row svg{
  width:16px;
  height:16px;
  fill:none;
  stroke:var(--c-brand);
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.hero-media{position:relative;}
.hero-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  background:#dde6f1;
}
.float-card{
  position:absolute;
  right:-10px;
  bottom:22px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:12px;
  box-shadow:var(--sh-2);
  padding:14px 18px;
  display:flex;
  flex-direction:column;
  gap:2px;
}
.float-card .fc-num{
  font-size:24px;
  font-weight:700;
  color:var(--c-brand-deep);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.float-card .fc-label{font-size:12px;color:var(--c-ink-3);}

/* ================= 对比卡 ================= */
.compare-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:stretch;
  padding-top:12px;
}
.compare-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:16px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFDCEB;}
.compare-card.is-featured{
  border:2px solid var(--c-brand);
  box-shadow:var(--sh-2);
  transform:translateY(-10px);
}
.compare-card.is-featured:hover{transform:translateY(-13px);}
.featured-tag{
  position:absolute;
  top:-13px;
  left:28px;
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--c-accent);
  color:#fff;
  font-size:12px;
  font-weight:700;
  line-height:1.6;
}
.card-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--c-brand-soft);
  display:flex;
  align-items:center;
  justify-content:center;
}
.card-icon svg{
  width:22px;
  height:22px;
  fill:none;
  stroke:var(--c-brand);
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.compare-card h3{font-size:21px;font-weight:600;color:var(--c-ink);line-height:1.4;}
.compare-card .desc{font-size:15px;line-height:1.75;color:var(--c-ink-2);}
.point-list{display:flex;flex-direction:column;gap:10px;margin-top:2px;}
.point-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--c-ink-2);
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.62em;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--c-brand-soft);
  border:1px solid rgba(44,108,176,.45);
}
.compare-card .card-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);}

/* ================= 时间线 ================= */
.timeline{
  position:relative;
  max-width:840px;
  margin:0 auto;
  padding-left:52px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:15px;
  top:8px;
  bottom:8px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--c-brand),#CFDCEB);
}
.tl-item{position:relative;padding-bottom:28px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;
  left:-52px;
  top:2px;
  width:32px;
  height:32px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--c-brand);
  color:var(--c-brand);
  font-size:14px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  font-variant-numeric:tabular-nums;
  transition:background-color .2s ease, color .2s ease, transform .2s ease;
}
.tl-item:hover .tl-node{background:var(--c-accent);border-color:var(--c-accent);color:#fff;transform:scale(1.06);}
.tl-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:22px 24px;
  transition:transform .2s ease, box-shadow .2s ease;
}
.tl-item:hover .tl-card{transform:translateY(-2px);box-shadow:var(--sh-2);}
.tl-card h3{font-size:19px;font-weight:600;color:var(--c-ink);line-height:1.4;}
.tl-card p{margin-top:8px;font-size:15px;color:var(--c-ink-2);line-height:1.75;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 12px;
  border-radius:var(--r-pill);
  background:var(--c-brand-soft);
  color:var(--c-brand-deep);
  font-size:12px;
  font-weight:600;
  line-height:1.7;
}
.tag--accent{background:var(--c-accent-soft);color:#C6461F;}

/* ================= 清单区 ================= */
.list-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:56px;
  align-items:center;
}
.check-list{display:flex;flex-direction:column;gap:16px;}
.check-list li{
  display:flex;
  gap:14px;
  padding:18px 20px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.check-list li:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFDCEB;}
.check-mark{
  flex:0 0 auto;
  width:26px;
  height:26px;
  border-radius:8px;
  background:var(--c-brand-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:2px;
}
.check-mark svg{
  width:14px;
  height:14px;
  fill:none;
  stroke:var(--c-brand);
  stroke-width:2.4;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.check-list strong{display:block;font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.5;}
.check-list span.txt{display:block;font-size:14px;color:var(--c-ink-2);margin-top:4px;}
.list-media{position:relative;}
.list-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  background:#dde6f1;
}

/* ================= FAQ ================= */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.faq-item:hover{border-color:#CFDCEB;box-shadow:var(--sh-1);}
.faq-item.is-open{border-color:rgba(44,108,176,.4);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  text-align:left;
  line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;
  width:28px;
  height:28px;
  border-radius:8px;
  background:var(--c-brand-soft);
  position:relative;
  transition:background-color .2s ease, transform .2s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  top:13px;
  left:8px;
  width:12px;
  height:2px;
  border-radius:2px;
  background:var(--c-brand);
  transition:transform .22s ease, background-color .22s ease;
}
.faq-icon::after{transform:rotate(90deg);}
.faq-item.is-open .faq-icon{background:var(--c-accent-soft);}
.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after{background:var(--c-accent);}
.faq-item.is-open .faq-icon::after{transform:rotate(0deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
  background:var(--c-brand-soft);
}
.faq-item.is-open .faq-a{max-height:300px;}
.faq-a p{padding:16px 22px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}

/* ================= 底部转化区 ================= */
.cta-panel{
  background:var(--c-brand-soft);
  border:1px solid #D3E2F4;
  border-radius:18px;
  padding:48px;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.cta-panel h2{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;
  line-height:1.3;
  color:var(--c-ink);
  letter-spacing:-.3px;
}
.cta-panel .cta-desc{margin-top:14px;font-size:15px;color:var(--c-ink-2);max-width:50ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.cta-form .field-label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--c-ink-2);
  margin-bottom:8px;
}
.req{color:var(--c-accent);}
.field-row{display:flex;gap:12px;}
.field-row input{
  flex:1 1 auto;
  min-width:0;
  height:46px;
  padding:0 14px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.field-row input::placeholder{color:#A8B4C4;}
.field-row input:hover{border-color:#CFDCEB;}
.field-row input:focus{
  outline:none;
  border-color:var(--c-brand);
  box-shadow:0 0 0 3px rgba(44,108,176,.12);
}
.field-row input.is-error{border-color:var(--c-err);box-shadow:0 0 0 3px var(--c-err-soft);}
.field-note{margin-top:10px;font-size:13px;color:var(--c-ink-3);}
.field-msg{margin-top:8px;font-size:13px;min-height:20px;}
.field-msg.is-error{color:var(--c-err);}
.field-msg.is-ok{
  color:var(--c-ok);
  background:var(--c-ok-soft);
  border-radius:10px;
  padding:10px 14px;
  font-weight:600;
}

/* ================= 页脚 ================= */
.site-footer{
  background:var(--c-footer);
  color:rgba(255,255,255,.72);
  padding:64px 0 24px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:#fff;
}
.footer-brand .brand-mark{background:var(--c-brand);}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:34ch;}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:rgba(255,255,255,.7);
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{
  position:relative;
  display:inline-block;
  font-size:14px;
  color:rgba(255,255,255,.62);
  transition:color .2s ease, padding-left .2s ease;
}
.footer-links a::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:2px;
  height:0;
  border-radius:2px;
  background:var(--c-accent);
  transition:height .2s ease;
}
.footer-links a:hover{color:#fff;padding-left:10px;}
.footer-links a:hover::before{height:14px;}
.footer-meta{font-size:14px;line-height:2;color:rgba(255,255,255,.62);}
.footer-meta strong{color:rgba(255,255,255,.82);font-weight:600;}
.footer-bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ================= 移动端固定转化条 ================= */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:90;
  background:#fff;
  border-top:1px solid var(--c-line);
  box-shadow:0 -8px 24px -16px rgba(18,38,63,.4);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;
  gap:14px;
}
.mobile-bar .bar-text{
  flex:1 1 auto;
  font-size:13px;
  line-height:1.5;
  color:var(--c-ink-2);
}
.mobile-bar .bar-text strong{display:block;font-size:14px;color:var(--c-ink);font-weight:600;}

/* ================= 响应式 ================= */
@media (max-width:1279px){
  :root{--sp-6:88px;}
}
@media (max-width:1023px){
  :root{--sp-6:72px;}
  .nav-links,.header-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .header-actions{margin-left:auto;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media{order:2;}
  .compare-grid{grid-template-columns:1fr;gap:20px;padding-top:0;}
  .compare-card.is-featured{transform:none;}
  .compare-card.is-featured:hover{transform:translateY(-3px);}
  .list-grid{grid-template-columns:1fr;gap:36px;}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:72px;}
}
@media (max-width:767px){
  :root{--sp-6:56px;}
  .container{padding:0 16px;}
  .header-card{height:62px;padding:0 14px;}
  .site-header.is-scrolled .header-card{height:58px;}
  .brand-text{font-size:16px;}
  .cat-hero{padding:36px 0 56px;}
  .cat-hero .lead{font-size:15.5px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .trust-row{gap:14px;}
  .float-card{right:10px;bottom:12px;padding:12px 14px;}
  .compare-card,.tl-card{padding:22px 20px;}
  .timeline{padding-left:42px;}
  .timeline::before{left:12px;}
  .tl-node{left:-42px;width:28px;height:28px;font-size:13px;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a p{padding:14px 18px 18px;}
  .cta-panel{padding:28px 20px;border-radius:16px;}
  .cta-actions .btn{width:100%;}
  .field-row{flex-direction:column;}
  .field-row input{width:100%;}
  .field-row .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:479px){
  .btn{padding:13px 20px;font-size:14.5px;}
  .mobile-nav{grid-template-columns:1fr;}
  .sec-head h2{font-size:24px;}
  .tl-card h3{font-size:17px;}
}