/* roulang page: index */
:root{
  --accent:#E23A16;
  --accent-dark:#c72f0f;
  --accent-soft:rgba(226,58,22,.08);
  --deep:#101418;
  --bg:#F6F4F1;
  --surface:#FFFFFF;
  --line:#E8E5E0;
  --ink:#17191C;
  --ink-2:#5A6169;
  --ink-3:#8C9095;
  --lime:#D6F35C;
  --radius:6px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(16,20,24,.06);
  --shadow-2:0 8px 24px rgba(16,20,24,.10);
  --container:1240px;
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:72px;--sp-7:112px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:800;line-height:1.15;letter-spacing:-.01em;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-7) 0;}
.section-alt{background:var(--surface);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-weight:700;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--accent);display:inline-block;}
.h2{font-size:clamp(28px,3.2vw,40px);line-height:1.16;}
.h3{font-size:clamp(19px,1.7vw,24px);line-height:1.3;}
.lead{color:var(--ink-2);font-size:17px;max-width:640px;}
.section-head{max-width:760px;margin-bottom:var(--sp-5);}
.section-head .h2{margin:16px 0 16px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-onDark{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-onDark:hover{background:#fff;color:var(--deep);border-color:#fff;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;pointer-events:none;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--accent);}
.link-arrow span{transition:transform .22s var(--ease);}
.link-arrow:hover span{transform:translateX(4px);}

/* ---------- tags ---------- */
.tag{
  display:inline-block;padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:var(--accent-soft);color:var(--accent);white-space:nowrap;
}
.tag-sm{font-size:11px;padding:3px 8px;}
.tag-lime{background:var(--lime);color:var(--deep);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(246,244,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:height .25s var(--ease),border-color .25s var(--ease),background-color .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.96);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;transition:height .25s var(--ease);}
.site-header.is-scrolled .header-inner{height:62px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:18px;letter-spacing:-.01em;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:32px;height:32px;border-radius:8px;flex:0 0 32px;
  background:linear-gradient(135deg,var(--accent) 0%,#f2693f 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:15px;font-weight:900;letter-spacing:-.05em;
}
.brand-text{white-space:nowrap;}
.brand-text .short{display:none;}
.nav{display:flex;align-items:center;gap:32px;}
.nav-list{display:flex;align-items:center;gap:32px;}
.nav-list a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 0;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-list a:hover{color:var(--ink);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a.active{color:var(--ink);font-weight:600;}
.nav-list a.active::after{transform:scaleX(1);}
.nav-cta{margin-left:24px;padding:11px 22px;font-size:14px;}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);
  border-radius:var(--radius);align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,20,24,.5);opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);z-index:200;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:min(320px,84vw);background:var(--surface);
  z-index:210;transform:translateX(-102%);transition:transform .3s var(--ease);
  padding:28px 24px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:38px;height:38px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--surface);cursor:pointer;font-size:20px;line-height:1;color:var(--ink-2);
}
.drawer a.d-link{
  display:block;padding:14px 4px;font-size:16px;font-weight:500;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer a.d-link.active{color:var(--accent);font-weight:700;}
.drawer .btn{margin-top:22px;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--deep);color:#fff;
  padding:calc(76px + 72px) 0 0;
  min-height:82vh;display:flex;flex-direction:column;justify-content:center;
}
.hero::before{
  content:"";position:absolute;top:0;right:0;bottom:0;width:58%;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  -webkit-mask-image:linear-gradient(to right,transparent 0%,rgba(0,0,0,.55) 38%,#000 100%);
  mask-image:linear-gradient(to right,transparent 0%,rgba(0,0,0,.55) 38%,#000 100%);
  opacity:.92;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,20,24,.98) 0%,rgba(16,20,24,.9) 34%,rgba(16,20,24,.3) 62%,rgba(16,20,24,.1) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%;padding-bottom:64px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  font-size:13px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:28px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--lime);display:inline-block;}
.hero h1{
  font-size:clamp(40px,6.4vw,88px);font-weight:900;line-height:1.08;letter-spacing:-.02em;
  max-width:15em;margin-bottom:26px;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{font-size:clamp(17px,1.35vw,20px);line-height:1.7;color:rgba(255,255,255,.72);max-width:640px;margin-bottom:38px;}
.hero-actions{display:flex;align-items:center;gap:28px;flex-wrap:wrap;}
.hero .link-arrow{color:#fff;}
.hero .link-arrow:hover{color:var(--lime);}
.trust-bar{
  position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.14);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.trust-item{padding:26px 0 30px;border-right:1px solid rgba(255,255,255,.14);}
.trust-item:last-child{border-right:0;}
.trust-item .num{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3vw,42px);font-weight:800;line-height:1;color:#fff;letter-spacing:-.02em;
}
.trust-item .num b{color:var(--accent);font-weight:800;font-size:.55em;vertical-align:top;margin-left:2px;}
.trust-item .lbl{font-size:13px;color:rgba(255,255,255,.55);margin-top:10px;letter-spacing:.04em;}

/* ---------- features ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-5) 72px;}
.feat-item{padding-top:26px;border-top:1px solid var(--line);}
.feat-item:nth-child(even){transform:translateY(32px);}
.feat-no{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;
  font-size:44px;font-weight:800;color:var(--line);line-height:1;letter-spacing:-.04em;
}
.feat-item .tag{margin:18px 0 14px;}
.feat-item h3{font-size:22px;margin-bottom:12px;}
.feat-item p{color:var(--ink-2);font-size:16px;margin-bottom:16px;}

/* ---------- demo ---------- */
.demo-row{display:grid;grid-template-columns:1.05fr 1fr;gap:72px;align-items:center;}
.demo-row + .demo-row{margin-top:104px;}
.demo-row.reverse .demo-media{order:2;}
.demo-media{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--line);}
.demo-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .6s var(--ease);}
.demo-media:hover img{transform:scale(1.03);}
.dot{
  position:absolute;width:26px;height:26px;border-radius:50%;
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 4px rgba(226,58,22,.22);
}
.dot span{
  position:absolute;left:34px;top:50%;transform:translateY(-50%);
  background:rgba(16,20,24,.88);color:#fff;font-size:12px;font-weight:500;
  padding:4px 10px;border-radius:4px;white-space:nowrap;letter-spacing:.02em;
}
.dot-1{top:20%;left:14%;}
.dot-2{top:52%;left:46%;}
.dot-3{top:76%;left:72%;}
.demo-text h2{font-size:clamp(26px,2.6vw,34px);margin-bottom:18px;}
.demo-text p{color:var(--ink-2);margin-bottom:22px;}
.point-list li{
  position:relative;padding-left:22px;margin-bottom:12px;color:var(--ink-2);font-size:16px;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;background:var(--accent);border-radius:1px;
}
.point-list li strong{color:var(--ink);font-weight:600;}

/* ---------- proof ---------- */
.proof{background:var(--deep);color:#fff;}
.proof .h2{color:#fff;}
.proof .lead{color:rgba(255,255,255,.62);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin:56px 0 64px;}
.stat{padding-top:24px;border-top:1px solid rgba(255,255,255,.16);}
.stat .num{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;
  font-size:clamp(30px,3.4vw,46px);font-weight:800;line-height:1;letter-spacing:-.03em;color:#fff;
}
.stat .num b{color:var(--accent);}
.stat .cap{font-size:13px;color:rgba(255,255,255,.5);margin-top:12px;}
.badges{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:56px;}
.badge{
  padding:10px 18px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.04em;
  border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.5);
  filter:grayscale(1);transition:all .28s var(--ease);
}
.badge:hover{color:#fff;border-color:var(--accent);filter:grayscale(0);background:rgba(226,58,22,.14);}
.quote{border-left:3px solid var(--accent);padding-left:26px;max-width:820px;}
.quote p{font-size:clamp(17px,1.6vw,21px);line-height:1.8;color:rgba(255,255,255,.9);margin-bottom:14px;}
.quote cite{font-style:normal;font-size:14px;color:rgba(255,255,255,.5);}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;align-items:start;max-width:940px;}
.price-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:40px 36px;box-shadow:var(--shadow-1);position:relative;
  transition:box-shadow .28s var(--ease),transform .28s var(--ease);
}
.price-card:hover{box-shadow:var(--shadow-2);}
.price-card.featured{border-color:var(--accent);transform:translateY(-10px);}
.price-card .ribbon{
  position:absolute;top:-13px;right:24px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.08em;padding:5px 12px;border-radius:999px;
}
.price-card h3{font-size:21px;margin-bottom:10px;}
.price-card .desc{color:var(--ink-2);font-size:15px;min-height:52px;margin-bottom:24px;}
.price-line{display:flex;align-items:flex-end;gap:6px;padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:26px;}
.price-line .cur{font-size:18px;font-weight:700;color:var(--ink-2);line-height:1.6;}
.price-line .val{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;
  font-size:46px;font-weight:800;line-height:1;letter-spacing:-.03em;
}
.price-line .unit{font-size:14px;color:var(--ink-3);line-height:1.9;margin-left:4px;}
.checklist li{display:flex;gap:12px;font-size:15px;color:var(--ink-2);padding:9px 0;}
.checklist li i{
  flex:0 0 18px;width:18px;height:18px;border-radius:50%;margin-top:4px;
  background:var(--accent-soft);color:var(--accent);font-style:normal;
  font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.checklist li.off{color:var(--ink-3);}
.checklist li.off i{background:var(--line);color:var(--ink-3);}
.price-card .btn{margin-top:30px;}

/* ---------- news ---------- */
.news-feature{
  display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);margin-bottom:40px;
  transition:box-shadow .28s var(--ease);
}
.news-feature:hover{box-shadow:var(--shadow-2);}
.nf-media{display:block;overflow:hidden;height:100%;}
.nf-media img{width:100%;height:100%;min-height:290px;object-fit:cover;transition:transform .6s var(--ease);}
.news-feature:hover .nf-media img{transform:scale(1.03);}
.nf-body{padding:36px 40px 36px 0;}
.nf-body h3{font-size:clamp(20px,2vw,26px);margin:16px 0 14px;line-height:1.35;}
.nf-body p{
  color:var(--ink-2);font-size:16px;margin-bottom:22px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.nf-meta{display:flex;align-items:center;gap:20px;font-size:14px;color:var(--ink-3);}
.news-rows li{border-top:1px solid var(--line);}
.news-rows li:last-child{border-bottom:1px solid var(--line);}
.news-rows a{
  display:grid;grid-template-columns:96px 1fr 1.4fr 96px 24px;
  gap:24px;align-items:center;padding:22px 8px;
  transition:transform .24s var(--ease),background-color .24s var(--ease);
}
.news-rows a:hover{transform:translateX(4px);background:var(--surface);color:inherit;}
.news-rows a:hover .nr-title{color:var(--accent);}
.nr-title{font-weight:600;font-size:16px;line-height:1.5;}
.nr-sum{
  font-size:14px;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.nr-time{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;}
.nr-arrow{color:var(--accent);font-size:18px;transition:transform .24s var(--ease);}
.news-rows a:hover .nr-arrow{transform:translateX(4px);}
.news-more{margin-top:32px;}
.empty-state{
  text-align:center;padding:72px 24px;border:1px dashed var(--line);border-radius:var(--radius);
  background:var(--surface);color:var(--ink-2);
}
.empty-state .empty-icon{font-size:28px;color:var(--ink-3);display:block;margin-bottom:12px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:flex-start;gap:20px;padding:26px 0;
  font-size:clamp(17px,1.6vw,20px);font-weight:700;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-no{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;font-weight:700;
  color:var(--ink-3);padding-top:5px;flex:0 0 34px;
}
.faq-ico{
  margin-left:auto;flex:0 0 24px;width:24px;height:24px;position:relative;margin-top:3px;
  transition:transform .26s var(--ease);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
  top:50%;left:50%;transform:translate(-50%,-50%);
}
.faq-ico::before{width:14px;height:2px;}
.faq-ico::after{width:2px;height:14px;transition:opacity .2s var(--ease);}
.faq-item.open .faq-ico::after{opacity:0;}
.faq-item.open .faq-ico{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .26s var(--ease);
  border-left:0 solid var(--accent);
}
.faq-item.open .faq-a{border-left-width:3px;}
.faq-a-inner{
  padding:0 0 28px 54px;font-size:16px;line-height:1.9;color:var(--ink-2);
}

/* ---------- contact ---------- */
.contact{background:var(--surface);border-top:1px solid var(--line);}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:72px;align-items:start;}
.contact-info h2{font-size:clamp(26px,2.8vw,36px);margin:16px 0 20px;}
.contact-info p{color:var(--ink-2);margin-bottom:26px;}
.contact-notes li{
  display:flex;gap:12px;font-size:15px;color:var(--ink-2);padding:10px 0;
}
.contact-notes li i{
  flex:0 0 6px;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:11px;
}
.form-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:36px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink);}
.field label .req{color:var(--accent);margin-left:3px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface);font-size:15px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field textarea{height:118px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%),linear-gradient(135deg,var(--ink-2) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:var(--accent-soft);
  box-shadow:0 0 0 3px rgba(226,58,22,.1);
}
.field.error input,.field.error select,.field.error textarea{border-color:#D02B14;background:rgba(208,43,20,.05);}
.field .err-msg{display:none;font-size:13px;color:#D02B14;margin-top:6px;}
.field.error .err-msg{display:block;}
.field.success input,.field.success select,.field.success textarea{border-color:#1E9E58;background:rgba(30,158,88,.06);}
.form-note{font-size:13px;color:var(--ink-3);margin-top:16px;line-height:1.7;}
.form-receipt{
  display:none;margin-top:18px;padding:12px 16px;border-radius:var(--radius);font-size:14px;
  background:rgba(30,158,88,.08);border:1px solid rgba(30,158,88,.35);color:#16794A;
}
.form-receipt.show{display:block;}

/* ---------- cta strip ---------- */
.cta-strip{background:var(--deep);color:#fff;padding:64px 0;}
.cta-strip .inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-strip h2{font-size:clamp(22px,2.4vw,32px);color:#fff;margin-bottom:10px;}
.cta-strip p{color:rgba(255,255,255,.62);font-size:16px;max-width:560px;}

/* ---------- footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.66);padding:80px 0 0;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:64px;}
.footer-brand .brand{color:#fff;margin-bottom:18px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--accent) 0%,#f2693f 100%);}
.footer-brand p{color:rgba(255,255,255,.55);font-size:14px;line-height:1.9;max-width:320px;}
.footer-col h4{font-size:14px;color:#fff;font-weight:700;letter-spacing:.1em;margin-bottom:20px;text-transform:uppercase;}
.footer-col li{margin-bottom:12px;}
.footer-col a{color:rgba(255,255,255,.62);font-size:14px;}
.footer-col a:hover{color:var(--accent);text-decoration:underline;}
.footer-sub{display:flex;gap:8px;margin-top:16px;}
.footer-sub input{
  flex:1;height:44px;padding:0 12px;border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;font-size:14px;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.4);}
.footer-sub input:focus{outline:none;border-color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:24px 0 32px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.42);
}
.footer-bottom .record{min-height:18px;}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:130;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:999px;background:var(--accent);color:#fff;
  font-size:15px;font-weight:700;box-shadow:0 10px 30px rgba(226,58,22,.32);
  opacity:0;visibility:hidden;transform:translateY(16px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),background-color .2s var(--ease);
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--accent-dark);color:#fff;}
.float-bar{display:none;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-list,.nav-cta{display:none;}
  .menu-toggle{display:flex;}
  .feat-grid{grid-template-columns:1fr;gap:40px;}
  .feat-item:nth-child(even){transform:none;}
  .demo-row{grid-template-columns:1fr;gap:36px;}
  .demo-row.reverse .demo-media{order:0;}
  .demo-row + .demo-row{margin-top:72px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;gap:44px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .news-rows a{grid-template-columns:1fr 88px 20px;}
  .news-rows .nr-sum{display:none;}
  .news-rows .tag{display:none;}
}
@media (max-width:767px){
  :root{--sp-7:64px;}
  body{font-size:16px;line-height:1.85;}
  .container{padding:0 20px;}
  .hero{padding-top:calc(62px + 48px);min-height:auto;}
  .hero::before{width:100%;opacity:.35;-webkit-mask-image:none;mask-image:none;}
  .hero h1{font-size:clamp(30px,8.5vw,44px);max-width:none;}
  .hero-inner{padding-bottom:44px;}
  .hero-actions{gap:18px;}
  .trust-bar{grid-template-columns:repeat(2,1fr);}
  .trust-item{border-bottom:1px solid rgba(255,255,255,.14);padding:20px 0 22px;}
  .trust-item:nth-child(2n){border-right:0;}
  .trust-item:nth-last-child(-n+2){border-bottom:0;}
  .news-feature{grid-template-columns:1fr;gap:0;}
  .nf-media img{min-height:200px;aspect-ratio:16/9;}
  .nf-body{padding:26px 22px 30px;}
  .news-rows a{grid-template-columns:1fr 18px;gap:14px;padding:18px 4px;}
  .news-rows .nr-time{display:none;}
  .price-grid{grid-template-columns:1fr;}
  .price-card.featured{transform:none;}
  .form-card{padding:24px 20px;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .footer-grid{grid-template-columns:1fr;gap:36px;padding-bottom:48px;}
  .faq-a-inner{padding-left:0;}
  .faq-no{flex:0 0 28px;}
  .float-cta{display:none;}
  .float-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:130;
    background:rgba(16,20,24,.97);padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    align-items:center;gap:12px;transform:translateY(110%);transition:transform .3s var(--ease);
  }
  .float-bar.show{transform:translateY(0);}
  .float-bar .btn{flex:1;padding:12px 18px;font-size:15px;}
  .float-bar .call{
    width:46px;height:46px;flex:0 0 46px;border-radius:50%;
    border:1px solid rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;color:#fff;
  }
  .cta-strip .inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .stat-grid{grid-template-columns:1fr;}
  .brand{font-size:16px;}
  .brand-text .full{display:none;}
  .brand-text .short{display:inline;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --accent:#E23A16;
  --accent-dark:#c22f0f;
  --accent-soft:rgba(226,58,22,.10);
  --lime:#D6F35C;
  --deep:#101418;
  --deep-soft:#1b2026;
  --ink:#17191C;
  --muted:#5A6169;
  --weak:#8C9095;
  --bg:#F6F4F1;
  --surface:#FFFFFF;
  --line:#E8E5E0;
  --radius:6px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(16,20,24,.06);
  --shadow-2:0 8px 24px rgba(16,20,24,.10);
  --container:1240px;
  --nav-h:76px;
  --nav-h-sm:62px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.18;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
::selection{background:var(--accent);color:#fff;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,241,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line);background:rgba(246,244,241,.97);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--nav-h);gap:24px;
  transition:height .25s var(--ease);
}
.site-header.is-stuck .header-inner{height:var(--nav-h-sm);}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:8px;
  background:var(--deep);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:900;letter-spacing:.02em;
}
.brand-text{font-size:17px;color:var(--ink);white-space:nowrap;}
.nav{display:flex;align-items:center;gap:24px;}
.nav-list{display:flex;align-items:center;gap:32px;}
.nav-list a{
  position:relative;display:inline-block;
  font-size:15px;color:var(--muted);font-weight:500;padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .25s var(--ease);opacity:.9;
}
.nav-list a:hover{color:var(--ink);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a.active{color:var(--ink);font-weight:600;}
.nav-list a.active::after{transform:scaleX(1);}
.nav-cta{margin-left:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--surface);color:var(--ink);align-items:center;justify-content:center;font-size:16px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--deep);color:var(--deep);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1.5px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--deep);color:var(--deep);}
.btn-outline:hover{background:var(--deep);color:#fff;}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--deep);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--accent);
}
.link-arrow i{transition:transform .2s var(--ease);font-size:12px;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- article hero / breadcrumb ---------- */
.article-hero{
  position:relative;
  background-color:var(--deep);
  background-image:linear-gradient(90deg,rgba(16,20,24,.94) 0%,rgba(16,20,24,.78) 45%,rgba(16,20,24,.42) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center right;
  color:#fff;padding:72px 0 64px;
}
.article-hero .crumb{margin-bottom:22px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.66);}
.crumb a{color:rgba(255,255,255,.72);transition:color .2s var(--ease);}
.crumb a:hover{color:#fff;}
.crumb .sep{color:rgba(255,255,255,.34);}
.crumb .current{
  max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:rgba(255,255,255,.9);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.article-hero .tag{background:rgba(226,58,22,.18);color:#ffb9a5;}
.article-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  font-weight:900;line-height:1.2;letter-spacing:-.02em;
  margin:16px 0 20px;max-width:20ch;color:#fff;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:14px;color:rgba(255,255,255,.66);
  padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
}
.meta-row span{display:inline-flex;align-items:center;gap:7px;}
.meta-row i{font-size:13px;color:rgba(255,255,255,.45);}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.3);padding:0;}

/* ---------- article layout ---------- */
.article-main{padding:64px 0 88px;background:var(--bg);}
.article-wrap{max-width:780px;margin:0 auto;}
.article-body{font-size:17px;line-height:1.9;color:var(--ink);}
.article-body > * + *{margin-top:1.2em;}
.article-body p{color:#26292e;}
.article-body h2{
  position:relative;
  font-size:clamp(22px,2.2vw,28px);
  margin-top:48px;margin-bottom:18px;padding-left:16px;font-weight:800;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.18em;width:3px;border-radius:2px;background:var(--accent);
}
.article-body h3{font-size:20px;font-weight:800;margin-top:36px;margin-bottom:12px;color:var(--ink);}
.article-body h4{font-size:18px;font-weight:700;margin-top:28px;margin-bottom:10px;}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(226,58,22,.32);transition:border-color .2s var(--ease);}
.article-body a:hover{border-bottom-color:var(--accent);}
.article-body ul,.article-body ol{margin:1.2em 0;padding-left:0;}
.article-body li{position:relative;padding-left:22px;margin:10px 0;color:#26292e;}
.article-body ul > li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;background:var(--accent);border-radius:2px;
}
.article-body ol{counter-reset:li;}
.article-body ol > li::before{
  counter-increment:li;content:counter(li);
  position:absolute;left:0;top:.35em;
  font-size:13px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:32px 0;padding:18px 22px;
  border-left:3px solid var(--accent);background:var(--surface);
  color:var(--muted);border-radius:0 var(--radius) var(--radius) 0;
}
.article-body blockquote p{color:var(--muted);}
.article-body img{border-radius:var(--radius);margin:28px auto;box-shadow:var(--shadow-1);}
.article-body figure{margin:28px 0;}
.article-body figcaption{
  font-size:13px;color:var(--weak);text-align:center;margin-top:10px;line-height:1.7;
}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:28px 0;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body table th,.article-body table td{
  border:1px solid var(--line);padding:12px 16px;text-align:left;background:var(--surface);
}
.article-body table th{background:#f1eeea;font-weight:700;}
.article-body table td:first-child,.article-body table th:first-child{font-weight:700;color:var(--deep);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:44px 0;}
.article-body code{
  background:#f1eeea;border:1px solid var(--line);border-radius:4px;
  padding:2px 6px;font-size:14px;
}

/* ---------- empty state ---------- */
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:56px 32px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-state i{font-size:30px;color:var(--weak);}
.empty-state h2{font-size:22px;margin:16px 0 10px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{color:var(--muted);font-size:16px;margin-bottom:24px;}

/* ---------- related / post nav ---------- */
.section-block{padding:0 0 88px;background:var(--bg);}
.block-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:8px;
}
.block-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:900;}
.block-head .sub{font-size:14px;color:var(--weak);}
.related-list{display:block;}
.related-item{
  display:grid;grid-template-columns:120px 1fr auto;gap:24px;align-items:center;
  padding:22px 0;border-bottom:1px solid var(--line);
  transition:transform .25s var(--ease);
}
.related-item:hover{transform:translateX(4px);}
.related-item .thumb{
  width:120px;height:74px;border-radius:var(--radius);overflow:hidden;background:#e9e6e1;
}
.related-item .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.related-item:hover .thumb img{transform:scale(1.05);}
.related-item h3{font-size:18px;font-weight:700;margin-bottom:8px;transition:color .2s var(--ease);}
.related-item:hover h3{color:var(--accent);}
.related-item p{font-size:15px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.7;}
.related-item .arrow{color:var(--weak);font-size:14px;transition:color .2s var(--ease),transform .2s var(--ease);}
.related-item:hover .arrow{color:var(--accent);transform:translateX(4px);}
.related-meta{display:flex;align-items:center;gap:12px;margin-top:10px;font-size:13px;color:var(--weak);}
.related-meta .tag{height:24px;padding:0 10px;font-size:12px;}

.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px;
}
.post-nav a{
  display:block;padding:22px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.post-nav a:hover{border-color:var(--deep);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.post-nav .k{font-size:13px;color:var(--weak);display:block;margin-bottom:8px;}
.post-nav .v{font-size:16px;font-weight:700;color:var(--ink);display:flex;align-items:center;gap:8px;}
.post-nav a:hover .v{color:var(--accent);}

/* ---------- faq ---------- */
.faq-section{padding:0 0 96px;background:var(--bg);}
.faq-list{max-width:820px;margin:8px auto 0;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:18px;text-align:left;
  background:none;border:0;padding:26px 0;color:var(--ink);
  font-size:17px;font-weight:700;line-height:1.6;
}
.faq-q .idx{font-size:14px;font-weight:800;color:var(--weak);font-variant-numeric:tabular-nums;padding-top:3px;}
.faq-q .txt{flex:1;}
.faq-q .ic{
  flex:0 0 auto;width:22px;height:22px;position:relative;margin-top:3px;
  transition:transform .26s var(--ease);
}
.faq-q .ic::before,.faq-q .ic::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
}
.faq-q .ic::before{left:4px;right:4px;top:10px;height:2px;}
.faq-q .ic::after{top:4px;bottom:4px;left:10px;width:2px;transition:transform .26s var(--ease);}
.faq-item.open .faq-q .ic::after{transform:scaleY(0);}
.faq-item.open .faq-q{color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a-inner{
  padding:0 0 26px 38px;font-size:16px;color:var(--muted);line-height:1.9;
  border-left:3px solid transparent;
}
.faq-item.open .faq-a-inner{border-left-color:var(--accent);padding-left:22px;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--deep);color:#fff;padding:64px 0;
  background-image:linear-gradient(90deg,rgba(16,20,24,.95),rgba(16,20,24,.78)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);font-weight:900;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.7);font-size:16px;max-width:56ch;}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-outline{border-color:rgba(255,255,255,.5);color:#fff;}
.cta-band .btn-outline:hover{background:#fff;color:var(--deep);}

/* ---------- footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 28px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:48px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:38ch;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s var(--ease);}
.footer-col ul a:hover{color:var(--accent);text-decoration:underline;}
.footer-sub{display:flex;gap:8px;margin-top:16px;}
.footer-sub input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:#fff;font-size:14px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.footer-sub input::placeholder{color:rgba(255,255,255,.42);}
.footer-sub input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.1);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 24px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:15px;font-weight:700;
  box-shadow:0 10px 30px rgba(226,58,22,.32);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .2s var(--ease);
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--accent-dark);}
.float-bar{display:none;}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,20,24,.5);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:min(84vw,340px);z-index:95;
  background:var(--surface);padding:26px 22px;
  transform:translateX(-102%);transition:transform .32s var(--ease);
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-btn);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
}
.drawer-close:hover{border-color:var(--deep);}
.drawer nav a{
  display:block;padding:15px 4px;font-size:16px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer nav a.active{color:var(--accent);}
.drawer .btn{margin-top:22px;width:100%;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-list,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav{gap:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .article-hero{padding:48px 0 44px;}
  .article-hero h1{max-width:none;font-size:clamp(24px,6.4vw,32px);}
  .crumb .current{max-width:34ch;}
  .article-main{padding:44px 0 64px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body img{border-radius:0;margin-left:-20px;margin-right:-20px;width:calc(100% + 40px);max-width:none;}
  .article-body h2{margin-top:36px;font-size:22px;}
  .section-block{padding-bottom:64px;}
  .related-item{grid-template-columns:92px 1fr;gap:16px;}
  .related-item .thumb{width:92px;height:62px;}
  .related-item .arrow{display:none;}
  .post-nav{grid-template-columns:1fr;}
  .faq-section{padding-bottom:72px;}
  .faq-q{font-size:16px;padding:22px 0;}
  .faq-a-inner{padding-left:0;}
  .faq-item.open .faq-a-inner{padding-left:16px;}
  .cta-band{padding:48px 0;}
  .cta-band .actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .site-footer{padding:56px 0 96px;}
  .float-cta{display:none;}
  .float-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:75;
    gap:10px;padding:10px 16px;background:rgba(255,255,255,.96);
    border-top:1px solid var(--line);align-items:center;
    backdrop-filter:blur(8px);
  }
  .float-bar .btn-primary{flex:1;}
  .float-bar .icon-btn{
    width:48px;height:44px;flex:0 0 48px;border-radius:var(--radius-btn);
    border:1.5px solid var(--deep);color:var(--deep);display:inline-flex;
    align-items:center;justify-content:center;background:transparent;
  }
}
@media (max-width:479px){
  .brand-text{font-size:15px;}
  .article-hero h1{font-size:24px;}
  .block-head{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: category1 */
:root{
  --accent:#E23A16;
  --accent-dark:#C62F0F;
  --deep:#101418;
  --deep-2:#1A2029;
  --bg:#F6F4F1;
  --surface:#FFFFFF;
  --line:#E8E5E0;
  --ink:#17191C;
  --ink-2:#5A6169;
  --ink-3:#8C9095;
  --lime:#D6F35C;
  --radius-card:6px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(16,20,24,.06);
  --shadow-2:0 8px 24px rgba(16,20,24,.10);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:72px;
  --space-7:112px;
  --max:1240px;
  --mono:"SFMono-Regular",ui-monospace,"Roboto Mono","DIN Alternate",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.18;letter-spacing:-0.01em;color:var(--ink);}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}

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

/* ---------- 通用组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);margin-bottom:var(--space-2);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:background-color .22s ease,color .22s ease,transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--deep);border:1.5px solid var(--deep);}
.btn-ghost:hover{background:var(--deep);color:#fff;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--deep);border:1.5px solid rgba(255,255,255,.6);}
.btn-light:hover{background:var(--lime);border-color:var(--lime);color:var(--deep);transform:translateY(-1px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;color:var(--accent);
}
.link-arrow .arw{transition:transform .22s ease;display:inline-block;}
.link-arrow:hover .arw{transform:translateX(4px);}
.tag{
  display:inline-block;padding:3px 10px;border-radius:999px;
  background:rgba(226,58,22,.08);color:var(--accent);
  font-size:12px;font-weight:700;letter-spacing:.06em;
}
.badge-lime{
  display:inline-block;padding:2px 9px;border-radius:999px;
  background:var(--lime);color:var(--deep);
  font-size:12px;font-weight:800;letter-spacing:.04em;
}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:700;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,241,.92);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.95);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:76px;transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:62px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:900;letter-spacing:-0.02em;}
.brand-mark{
  width:34px;height:34px;border-radius:6px;background:var(--deep);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:900;letter-spacing:.04em;flex:none;
}
.brand-text{font-size:17px;color:var(--deep);}
.nav{display:flex;align-items:center;gap:24px;}
.nav-list{display:flex;align-items:center;gap:32px;}
.nav-list a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color .2s ease;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent);opacity:0;transform:scaleX(.4);
  transition:opacity .22s ease,transform .22s ease;
}
.nav-list a:hover{color:var(--deep);}
.nav-list a:hover::after{opacity:.5;transform:scaleX(1);}
.nav-list a.active{color:var(--deep);font-weight:700;}
.nav-list a.active::after{opacity:1;transform:scaleX(1);}
.nav-cta{height:42px;padding:0 20px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:6px;
  border:1px solid var(--line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--deep);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.drawer-mask{
  position:fixed;inset:0;background:rgba(16,20,24,.5);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:min(84vw,340px);
  background:var(--surface);z-index:100;padding:26px 24px;
  transform:translateX(-102%);transition:transform .3s cubic-bezier(.2,.7,.2,1);
  display:flex;flex-direction:column;gap:24px;
  box-shadow:var(--shadow-2);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:6px;border:1px solid var(--line);
  font-size:20px;line-height:1;color:var(--ink-2);background:#fff;
}
.drawer-close:hover{color:var(--accent);border-color:var(--accent);}
.drawer-list{display:flex;flex-direction:column;gap:2px;}
.drawer-list a{
  display:block;padding:14px 4px;border-bottom:1px solid var(--line);
  font-size:16px;font-weight:600;color:var(--ink-2);
}
.drawer-list a.active{color:var(--accent);}
.drawer-cta{margin-top:auto;}

/* ---------- 页首窄横幅 ---------- */
.page-banner{
  position:relative;overflow:hidden;background:var(--deep);
  min-height:260px;display:flex;align-items:flex-end;
}
.page-banner .banner-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center right;
  opacity:.62;
}
.page-banner .banner-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(16,20,24,.96) 0%,rgba(16,20,24,.82) 46%,rgba(16,20,24,.42) 100%);
}
.banner-inner{position:relative;z-index:2;padding:56px 0 44px;width:100%;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:rgba(255,255,255,.62);margin-bottom:16px;
}
.breadcrumb a{color:rgba(255,255,255,.72);transition:color .2s ease;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:#fff;font-weight:600;}
.page-banner h1{
  color:#fff;font-size:clamp(28px,3.8vw,46px);font-weight:900;line-height:1.14;
  letter-spacing:-0.02em;max-width:900px;
}
.page-banner h1 em{font-style:normal;color:var(--lime);}
.banner-sub{
  margin-top:14px;max-width:680px;color:rgba(255,255,255,.74);
  font-size:16px;line-height:1.75;
}

/* ---------- 板块基础 ---------- */
.section{padding:var(--space-7) 0;}
.section.tight{padding:var(--space-6) 0;}
.section-line{border-top:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:var(--space-5);}
.section-head h2{font-size:clamp(26px,3.1vw,38px);line-height:1.2;}
.section-head p{margin-top:16px;color:var(--ink-2);font-size:17px;}

/* ---------- 两列错位图文 ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;
}
.split + .split{margin-top:96px;}
.split-media{position:relative;overflow:hidden;border-radius:var(--radius-card);box-shadow:var(--shadow-1);}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1);}
.split-media:hover img{transform:scale(1.03);}
.split-media .media-tag{
  position:absolute;left:16px;top:16px;background:rgba(16,20,24,.82);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.08em;padding:6px 12px;border-radius:999px;
}
.split-body h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:18px;}
.split-body p{color:var(--ink-2);}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.check-list li{
  position:relative;padding-left:26px;font-size:16px;color:var(--ink);line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;
  background:var(--accent);border-radius:2px;
}
.check-list li span{color:var(--ink-2);}

/* ---------- 时间线 ---------- */
.timeline{
  margin-top:8px;border-left:2px solid var(--line);padding-left:34px;
  display:flex;flex-direction:column;gap:40px;
}
.timeline-item{position:relative;}
.timeline-item::before{
  content:"";position:absolute;left:-43px;top:6px;width:14px;height:14px;border-radius:50%;
  background:var(--surface);border:3px solid var(--accent);
}
.timeline-item .tl-index{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--accent);display:block;margin-bottom:6px;
}
.timeline-item h3{font-size:20px;margin-bottom:10px;}
.timeline-item p{color:var(--ink-2);font-size:16px;margin:0;}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat{padding:34px 26px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;padding-left:0;}
.stat .stat-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(34px,4vw,52px);font-weight:800;color:var(--accent);line-height:1;letter-spacing:-0.02em;
}
.stat .stat-num small{font-size:.45em;font-weight:700;color:var(--ink-2);margin-left:4px;letter-spacing:0;}
.stat .stat-label{margin-top:12px;font-size:15px;color:var(--ink-2);}

/* ---------- 说明卡组（非等宽三列） ---------- */
.note-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:32px;}
.note-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-1);transition:box-shadow .25s ease,transform .25s ease;
}
.note-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.note-card h3{font-size:20px;margin-bottom:12px;}
.note-card p{color:var(--ink-2);font-size:16px;margin:0;}
.note-card .note-index{
  font-family:var(--mono);font-size:14px;font-weight:700;color:var(--ink-3);
  letter-spacing:.1em;display:block;margin-bottom:14px;
}
.note-card.is-strong{background:var(--deep);border-color:var(--deep);}
.note-card.is-strong h3{color:#fff;}
.note-card.is-strong p{color:rgba(255,255,255,.72);}
.note-card.is-strong .note-index{color:var(--lime);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--deep);color:#fff;border-radius:var(--radius-card);
  padding:56px;display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(226,58,22,.5),transparent 68%);
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,34px);line-height:1.22;}
.cta-band p{color:rgba(255,255,255,.72);margin-top:14px;font-size:16px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:20px;
  padding:26px 0;text-align:left;position:relative;
  transition:color .2s ease;
}
.faq-q::before{
  content:"";position:absolute;left:-2px;top:22px;bottom:22px;width:3px;
  background:var(--accent);opacity:0;transition:opacity .22s ease;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q .q-index{
  font-family:var(--mono);font-size:14px;font-weight:700;color:var(--ink-3);flex:none;padding-top:4px;
}
.faq-item.is-open .faq-q .q-index{color:var(--accent);}
.faq-q .q-text{flex:1;font-size:18px;font-weight:700;line-height:1.5;color:var(--deep);}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);
  font-size:16px;line-height:1;margin-top:2px;transition:transform .26s ease,background-color .26s ease,color .26s ease,border-color .26s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(135deg);background:var(--accent);border-color:var(--accent);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .26s ease;
}
.faq-a-inner{padding:0 0 28px 44px;color:var(--ink-2);font-size:16px;line-height:1.9;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:48px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand p{margin-top:18px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.62);}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:800;letter-spacing:.04em;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:15px;color:rgba(255,255,255,.66);transition:color .2s ease;}
.footer-col a:hover{color:var(--accent);text-decoration:underline;}
.footer-sub{display:flex;gap:8px;margin-top:18px;}
.footer-sub input{
  flex:1;min-width:0;height:44px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:#fff;padding:0 14px;font-size:14px;transition:border-color .2s ease,background-color .2s ease;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.42);}
.footer-sub input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.1);}
.footer-sub .btn{height:44px;padding:0 18px;font-size:14px;border-radius:var(--radius-btn);}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}
.record{opacity:0;min-width:1px;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s cubic-bezier(.2,.7,.2,1),transform .42s cubic-bezier(.2,.7,.2,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-list,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .site-header{background:rgba(255,255,255,.96);border-bottom-color:var(--line);}
  .split{grid-template-columns:1fr;gap:32px;}
  .split + .split{margin-top:64px;}
  .split.reverse .split-media{order:-1;}
  .note-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat{border-left:1px solid var(--line);}
  .stat:nth-child(odd){border-left:0;padding-left:0;}
  .stat:nth-child(n+3){border-top:1px solid var(--line);}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section.tight{padding:52px 0;}
  .page-banner{min-height:230px;}
  .banner-inner{padding:40px 0 34px;}
  .banner-sub{font-size:15px;}
  .timeline{padding-left:26px;}
  .timeline-item::before{left:-35px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat{border-left:0;padding:26px 0;border-top:1px solid var(--line);}
  .stat:first-child{border-top:0;}
  .faq-q .q-text{font-size:16.5px;}
  .faq-a-inner{padding-left:0;font-size:15.5px;}
  .faq-q{gap:14px;}
  .site-footer{padding:56px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .cta-band{padding:32px 22px;}
  .note-card{padding:24px;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --accent:#E23A16;
  --accent-dark:#c02f10;
  --accent-soft:rgba(226,58,22,.08);
  --deep:#101418;
  --deep-2:#1b2127;
  --bg:#F6F4F1;
  --card:#FFFFFF;
  --line:#E8E5E0;
  --text:#17191C;
  --text-2:#5A6169;
  --text-3:#8C9095;
  --lime:#D6F35C;
  --r-card:6px;
  --r-btn:4px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,20,24,.06);
  --sh-2:0 8px 24px rgba(16,20,24,.10);
  --max:1240px;
  --nav-h:76px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.18;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(226,58,22,.25);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 24px rgba(226,58,22,.22);}
.btn-ghost{background:transparent;color:var(--deep);border:1.5px solid var(--deep);}
.btn-ghost:hover{background:var(--deep);color:#fff;}
.btn-light{background:#fff;color:var(--deep);}
.btn-light:hover{background:var(--lime);color:var(--deep);transform:translateY(-1px);}
.btn-pill{border-radius:var(--r-pill);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;color:var(--accent);}
.text-link .arw{transition:transform .25s var(--ease);}
.text-link:hover .arw{transform:translateX(4px);}
.tag{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;letter-spacing:.04em;
  background:var(--accent-soft);color:var(--accent);
}
.tag-lime{background:var(--lime);color:#2b3300;}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--text-2);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(246,244,241,.92);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
  height:var(--nav-h);
}
.site-header.scrolled{height:62px;border-bottom-color:var(--line);box-shadow:0 2px 12px rgba(16,20,24,.05);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:100%;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:900;letter-spacing:-.01em;color:var(--deep);}
.brand:hover{color:var(--deep);}
.brand-mark{
  width:34px;height:34px;border-radius:8px;background:var(--deep);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:900;letter-spacing:.02em;flex:0 0 auto;
}
.brand-text{font-size:17px;white-space:nowrap;}
.nav{display:flex;align-items:center;gap:24px;}
.nav-list{display:flex;align-items:center;gap:32px;}
.nav-list a{
  position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--text-2);
  padding:8px 0;transition:color .2s var(--ease);
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-list a:hover{color:var(--text);}
.nav-list a:hover::after{transform:scaleX(.5);}
.nav-list a.active{color:var(--deep);font-weight:700;}
.nav-list a.active::after{transform:scaleX(1);}
.nav-cta{height:42px;padding:0 20px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  align-items:center;justify-content:center;background:var(--deep);color:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-mask{
  display:none;position:fixed;inset:0;background:rgba(16,20,24,.5);z-index:85;opacity:0;transition:opacity .26s var(--ease);
}
.nav-mask.open{display:block;opacity:1;}

/* ---------- 页面主体基础 ---------- */
main{padding-top:var(--nav-h);}
.section{padding:112px 0;}
.section-tight{padding:80px 0;}
.section-line{border-top:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:56px;}
.sec-head .tag{margin-bottom:16px;}
.sec-head h2{font-size:clamp(26px,3.2vw,38px);font-weight:900;}
.sec-head p{margin-top:16px;color:var(--text-2);font-size:17px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent);
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--accent);display:inline-block;}

/* ---------- 分类页 Banner ---------- */
.page-banner{
  position:relative;min-height:280px;display:flex;align-items:flex-end;
  padding:64px 0 48px;color:#fff;background-color:var(--deep);
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  overflow:hidden;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(16,20,24,.94) 0%,rgba(16,20,24,.78) 46%,rgba(16,20,24,.35) 100%);
}
.page-banner .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.68);margin-bottom:20px;}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:var(--lime);}
.crumb .sep{opacity:.5;}
.page-banner h1{
  font-size:clamp(30px,4.4vw,54px);font-weight:900;line-height:1.1;letter-spacing:-.02em;max-width:900px;
}
.page-banner h1 em{font-style:normal;color:var(--lime);}
.page-banner .lead{
  margin-top:18px;max-width:660px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.8);
}

/* ---------- 错位图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;}
.split.reverse .split-media{order:2;}
.split-text h2{font-size:clamp(24px,2.7vw,32px);}
.split-text h2::before{
  content:"";display:block;width:3px;height:26px;background:var(--accent);border-radius:2px;
  margin-bottom:16px;
}
.split-text p{margin-top:18px;color:var(--text-2);}
.split-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .6s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.split-media .cap{
  position:absolute;left:16px;bottom:16px;background:rgba(16,20,24,.78);color:#fff;
  font-size:13px;padding:6px 12px;border-radius:var(--r-pill);backdrop-filter:blur(4px);
}
.offset-up{transform:translateY(-32px);}
.offset-down{transform:translateY(32px);}

.check-list{margin-top:26px;display:grid;gap:14px;}
.check-list li{position:relative;padding-left:24px;font-size:16px;color:var(--text-2);}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:10px;height:10px;border-radius:2px;background:var(--accent);
}
.check-list li strong{color:var(--text);font-weight:700;}

/* ---------- 统计条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat{padding:32px 24px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;}
.stat .v{font-size:clamp(30px,3.6vw,44px);font-weight:900;color:var(--accent);line-height:1;letter-spacing:-.02em;}
.stat .l{margin-top:10px;font-size:14px;color:var(--text-3);}

/* ---------- 编号步骤流 ---------- */
.steps{counter-reset:step;border-top:1px solid var(--line);}
.step{
  display:grid;grid-template-columns:120px 1fr;gap:32px;
  padding:34px 0;border-bottom:1px solid var(--line);
  transition:background-color .25s var(--ease),transform .25s var(--ease);
}
.step:hover{background:#fff;transform:translateX(4px);}
.step .idx{
  font-size:clamp(34px,4vw,52px);font-weight:900;color:var(--line);line-height:1;letter-spacing:-.03em;
  transition:color .25s var(--ease);
}
.step:hover .idx{color:var(--accent);}
.step h3{font-size:20px;font-weight:800;}
.step h3 span{display:inline-block;margin-left:10px;vertical-align:middle;}
.step p{margin-top:12px;color:var(--text-2);font-size:16px;}
.step .mini{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 数据卡 ---------- */
.data-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.data-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.data-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#dcd7d0;}
.data-card .k{font-size:13px;letter-spacing:.1em;color:var(--text-3);font-weight:700;}
.data-card .n{margin-top:14px;font-size:38px;font-weight:900;color:var(--deep);line-height:1;letter-spacing:-.02em;}
.data-card .n em{font-style:normal;font-size:15px;font-weight:700;color:var(--text-3);margin-left:6px;}
.data-card p{margin-top:14px;font-size:15px;color:var(--text-2);}
.underline-lime{position:relative;}
.underline-lime::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:4px;background:var(--lime);border-radius:2px;
}

/* ---------- 权益 / 场景卡 ---------- */
.benefit-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.benefit{
  display:flex;gap:20px;padding:28px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.benefit:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.benefit .bi{
  flex:0 0 auto;width:46px;height:46px;border-radius:var(--r-btn);
  background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-weight:900;font-size:16px;
}
.benefit h3{font-size:18px;}
.benefit p{margin-top:10px;font-size:15px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:20px;text-align:left;
  padding:26px 0;position:relative;background:none;
}
.faq-q .qn{
  flex:0 0 auto;font-size:15px;font-weight:800;color:var(--text-3);padding-top:4px;
  font-variant-numeric:tabular-nums;
}
.faq-q .qt{flex:1;font-size:19px;font-weight:700;color:var(--deep);line-height:1.5;transition:color .2s var(--ease);}
.faq-q:hover .qt{color:var(--accent);}
.faq-q .qi{
  flex:0 0 auto;width:26px;height:26px;position:relative;margin-top:4px;
}
.faq-q .qi::before,.faq-q .qi::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;transition:transform .26s var(--ease),background-color .26s var(--ease);
}
.faq-q .qi::before{left:0;right:0;top:12px;height:2px;}
.faq-q .qi::after{top:0;bottom:0;left:12px;width:2px;}
.faq-item.open .qi::before{background:var(--accent);}
.faq-item.open .qi::after{transform:rotate(90deg);opacity:0;}
.faq-a{overflow:hidden;max-height:0;transition:max-height .26s var(--ease);}
.faq-a-inner{padding:0 0 28px 44px;position:relative;color:var(--text-2);font-size:16px;line-height:1.9;}
.faq-item.open .faq-a-inner::before{
  content:"";position:absolute;left:14px;top:6px;bottom:28px;width:3px;background:var(--accent);border-radius:2px;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--deep);color:#fff;border-radius:var(--r-card);
  padding:56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(226,58,22,.45),transparent 65%);
}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);position:relative;z-index:2;}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.75);max-width:560px;position:relative;z-index:2;font-size:16px;}
.cta-band .actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 表单 ---------- */
.form-section{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start;}
.form-side h2{font-size:clamp(24px,2.8vw,32px);}
.form-side p{margin-top:18px;color:var(--text-2);}
.form-side .check-list li{font-size:15px;}
.form-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:36px;box-shadow:var(--sh-1);
}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:700;color:var(--text-2);}
.field label .req{color:var(--accent);margin-left:4px;}
.field input,.field select,.field textarea{
  height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fdfcfb;color:var(--text);transition:border-color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px rgba(226,58,22,.10);
}
.field.error input,.field.error select,.field.error textarea{border-color:#d92b2b;background:rgba(217,43,43,.05);}
.field .msg{font-size:13px;color:#d92b2b;min-height:18px;}
.field.ok input,.field.ok select{border-color:#1f9d55;}
.form-foot{margin-top:24px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.form-foot .note{font-size:13px;color:var(--text-3);}
.form-success{
  margin-top:18px;padding:12px 16px;border:1px solid #1f9d55;border-radius:var(--r-btn);
  background:rgba(31,157,85,.07);color:#1a7d44;font-size:14px;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 24px;border-radius:var(--r-pill);
  background:var(--accent);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 10px 28px rgba(226,58,22,.32);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background-color .2s var(--ease);
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--accent-dark);color:#fff;}
.float-bar{display:none;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:80px 0 32px;margin-top:112px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;}
.footer-brand .brand{color:#fff;margin-bottom:20px;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:20px;font-weight:800;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{font-size:15px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--accent);text-decoration:underline;}
.footer-sub{display:flex;gap:10px;margin-top:20px;}
.footer-sub input{
  flex:1;height:44px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.45);}
.footer-sub input:focus{outline:none;border-color:var(--accent);}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,.45);flex-wrap:wrap;
}

/* ---------- 入场动效 ---------- */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
[data-reveal].in{opacity:1;transform:none;}
.offset-up[data-reveal].in{transform:translateY(-32px);}
.offset-down[data-reveal].in{transform:translateY(32px);}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  [data-reveal]{opacity:1 !important;transform:none !important;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .split{gap:48px;}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:36px;}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex;}
  .nav{
    position:fixed;top:0;left:0;bottom:0;width:min(84vw,340px);z-index:90;
    background:#fff;flex-direction:column;align-items:flex-start;gap:0;
    padding:88px 24px 32px;transform:translateX(-102%);
    transition:transform .3s var(--ease);box-shadow:0 0 40px rgba(16,20,24,.18);
  }
  .nav.open{transform:translateX(0);}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .nav-list a{display:block;padding:16px 0;font-size:17px;border-bottom:1px solid var(--line);}
  .nav-list a::after{display:none;}
  .nav-list a.active{color:var(--accent);}
  .nav-cta{margin-top:24px;width:100%;height:48px;}
  .offset-up,.offset-down{transform:none;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:0;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .stats{grid-template-columns:1fr 1fr;}
  .stat{border-left:0;border-top:1px solid var(--line);}
  .stat:nth-child(-n+2){border-top:0;}
  .stat:nth-child(even){border-left:1px solid var(--line);}
  .data-grid{grid-template-columns:1fr 1fr;}
  .benefit-grid{grid-template-columns:1fr;}
  .form-section{grid-template-columns:1fr;gap:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  main{padding-top:66px;}
  .site-header{height:66px;}
  .brand-text{font-size:15px;}
  .brand-mark{width:30px;height:30px;font-size:12px;}
  .section{padding:56px 0;}
  .page-banner{min-height:240px;padding:48px 0 36px;background-position:center;}
  .page-banner::before{background:linear-gradient(180deg,rgba(16,20,24,.9) 0%,rgba(16,20,24,.78) 100%);}
  .step{grid-template-columns:60px 1fr;gap:18px;padding:26px 0;}
  .data-grid{grid-template-columns:1fr;}
  .field-grid{grid-template-columns:1fr;}
  .form-card{padding:24px;}
  .cta-band{padding:32px 24px;}
  .float-cta{display:none;}
  .float-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:75;
    background:#fff;border-top:1px solid var(--line);
    padding:10px 16px;gap:12px;align-items:center;justify-content:space-between;
    box-shadow:0 -6px 20px rgba(16,20,24,.08);
  }
  .float-bar .fb-txt{font-size:13px;color:var(--text-3);line-height:1.4;}
  .float-bar .fb-txt strong{display:block;color:var(--text);font-size:14px;}
  .float-bar .btn{height:44px;padding:0 18px;font-size:14px;}
  .site-footer{padding:56px 0 96px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-a-inner{padding-left:0;}
  .faq-item.open .faq-a-inner::before{display:none;}
  .crumb{font-size:13px;}
}
@media (max-width:479px){
  .page-banner h1{font-size:28px;}
  .stat{padding:24px 16px;}
  .cta-band .actions{width:100%;}
  .cta-band .actions .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --accent:#E23A16;
  --accent-dark:#c7320f;
  --accent-soft:rgba(226,58,22,.10);
  --deep:#101418;
  --deep-2:#1a2027;
  --bg:#F6F4F1;
  --surface:#ffffff;
  --line:#E8E5E0;
  --ink:#17191C;
  --ink-2:#5A6169;
  --ink-3:#8C9095;
  --lime:#D6F35C;
  --ok:#1F8A4C;
  --err:#D2352B;
  --r-sm:4px;
  --r-md:6px;
  --r-lg:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,20,24,.06);
  --sh-2:0 8px 24px rgba(16,20,24,.10);
  --s1:8px;--s2:16px;--s3:24px;--s4:32px;--s5:48px;--s6:72px;--s7:112px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.18;font-weight:900;letter-spacing:-.01em}
p{margin:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- 头部与导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,241,.94);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,background .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);background:rgba(246,244,241,.98)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;transition:height .25s ease}
.site-header.scrolled .header-inner{height:62px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:var(--r-sm);
  background:var(--deep);color:#fff;font-size:14px;font-weight:900;letter-spacing:.04em;
}
.brand-text{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:.01em}
.nav{display:flex;align-items:center;gap:32px}
.nav-list{display:flex;align-items:center;gap:32px}
.nav-list a{
  position:relative;display:inline-block;
  font-size:15px;color:var(--ink-2);padding:6px 0;font-weight:500;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-list a:hover{color:var(--ink)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a.active{color:var(--ink);font-weight:600}
.nav-list a.active::after{transform:scaleX(1)}
.nav-cta{margin-left:0}
.nav-head,.nav-toggle,.nav-mask{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-sm);font-size:15px;font-weight:600;
  padding:12px 22px;line-height:1.2;border:1.5px solid transparent;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 6px 18px rgba(226,58,22,.24)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--deep);color:var(--deep)}
.btn-ghost:hover{background:var(--deep);color:#fff;transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--deep)}
.btn-light:hover{background:var(--lime);color:var(--deep);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--accent);
}
.link-arrow svg{transition:transform .22s ease}
.link-arrow:hover svg{transform:translateX(4px)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:4px 10px;border-radius:var(--r-pill);
  background:var(--accent-soft);color:var(--accent);
}
.tag-lime{background:rgba(214,243,92,.55);color:#3d4a08}
.tag-dark{background:rgba(255,255,255,.12);color:#fff}

/* ---------- 通用板块 ---------- */
.section{padding:112px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:clamp(28px,3.2vw,40px);margin-bottom:16px}
.section-head p{color:var(--ink-2);font-size:17px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent);margin-bottom:16px;
}
.eyebrow::before{content:"";width:24px;height:3px;background:var(--accent);border-radius:2px}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 页首 banner ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center right;
  min-height:320px;display:flex;align-items:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,20,24,.94) 0%,rgba(16,20,24,.82) 46%,rgba(16,20,24,.42) 100%);
}
.page-hero .container{position:relative;z-index:2;padding-top:64px;padding-bottom:64px}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.66);margin-bottom:22px}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb .sep{color:rgba(255,255,255,.38)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.14;letter-spacing:-.02em;
  max-width:900px;margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--lime)}
.page-hero p{max-width:660px;color:rgba(255,255,255,.78);font-size:18px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-meta span{
  font-size:13px;padding:6px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.86);
}

/* ---------- 数据横条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--surface);
}
.stat-strip .stat{padding:32px 24px;border-left:1px solid var(--line)}
.stat-strip .stat:first-child{border-left:0}
.stat .value{font-size:clamp(28px,3.4vw,40px);font-weight:900;color:var(--accent);line-height:1.1}
.stat .label{font-size:14px;color:var(--ink-3);margin-top:8px}

/* ---------- 入口卡片 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.entry-card{
  display:flex;flex-direction:column;gap:14px;
  padding:28px 24px 26px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#d9d5ce}
.entry-card .idx{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--accent)}
.entry-card h3{font-size:20px}
.entry-card p{font-size:15px;color:var(--ink-2);line-height:1.75}
.entry-card .count{
  margin-top:auto;font-size:13px;color:var(--ink-3);
  display:flex;align-items:center;justify-content:space-between;
}
.entry-card .count svg{color:var(--accent)}

/* ---------- 问答折叠 ---------- */
.faq-wrap{max-width:920px}
.qa-group{margin-bottom:48px}
.qa-group-head{
  display:flex;align-items:baseline;gap:14px;
  padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:8px;
}
.qa-group-head h3{font-size:20px}
.qa-group-head span{font-size:13px;color:var(--ink-3)}
.qa-item{border-bottom:1px solid var(--line);border-left:3px solid transparent;padding-left:24px;transition:border-color .24s ease}
.qa-item.open{border-left-color:var(--accent)}
.qa-q{
  display:flex;align-items:flex-start;gap:18px;width:100%;
  padding:24px 0;text-align:left;
}
.qa-idx{font-size:14px;font-weight:800;color:var(--accent);line-height:1.7;min-width:26px}
.qa-text{flex:1;font-size:17px;font-weight:600;line-height:1.6}
.qa-item.open .qa-text{color:var(--ink)}
.qa-icon{position:relative;width:18px;height:18px;flex:0 0 auto;margin-top:6px}
.qa-icon::before,.qa-icon::after{content:"";position:absolute;background:var(--ink-2);transition:transform .26s ease,background .26s ease}
.qa-icon::before{left:0;right:0;top:8px;height:2px}
.qa-icon::after{top:0;bottom:0;left:8px;width:2px}
.qa-item.open .qa-icon::before{background:var(--accent)}
.qa-item.open .qa-icon::after{transform:scaleY(0)}
.qa-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .26s ease}
.qa-item.open .qa-a{grid-template-rows:1fr}
.qa-a-inner{overflow:hidden}
.qa-a-inner p{font-size:16px;color:var(--ink-2);line-height:1.9;padding:0 34px 26px 44px}
.qa-a-inner .qa-tip{
  display:block;margin:0 34px 26px 44px;padding:14px 18px;
  background:var(--bg);border-left:3px solid var(--lime);border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:14px;color:var(--ink-2);
}

/* ---------- 图文错位 ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.split.rev .split-media{order:2}
.split-media{position:relative;border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.split-media:hover img{transform:scale(1.03)}
.split-body h2{font-size:clamp(26px,3vw,36px);margin-bottom:18px}
.split-body p{color:var(--ink-2);margin-bottom:22px}
.checklist li{
  position:relative;padding-left:26px;margin-bottom:14px;
  font-size:16px;color:var(--ink-2);
}
.checklist li::before{
  content:"";position:absolute;left:0;top:11px;width:10px;height:10px;
  background:var(--accent);border-radius:2px;
}
.checklist li strong{color:var(--ink);font-weight:700}

/* ---------- 表单 ---------- */
.contact-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}
.contact-intro h2{font-size:clamp(26px,3vw,36px);margin-bottom:18px}
.contact-intro p{color:var(--ink-2);margin-bottom:24px}
.contact-intro li{position:relative;padding-left:22px;margin-bottom:12px;color:var(--ink-2);font-size:15px}
.contact-intro li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--accent)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field label .req{color:var(--accent);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  font-size:15px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:#fffaf8;
  box-shadow:0 0 0 3px rgba(226,58,22,.13);
}
.field .hint{font-size:13px;color:var(--ink-3)}
.field .msg{font-size:13px;color:var(--err);display:none}
.field.err input,.field.err select,.field.err textarea{border-color:var(--err);background:#fef4f3}
.field.err .msg{display:block}
.field.ok input,.field.ok select,.field.ok textarea{border-color:var(--ok)}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.form-actions .btn{min-width:200px}
.form-receipt{
  grid-column:1 / -1;display:none;align-items:center;gap:10px;
  padding:14px 18px;border:1px solid var(--ok);border-radius:var(--r-md);
  background:rgba(31,138,76,.06);color:var(--ok);font-size:15px;
}
.form-receipt.show{display:flex}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--deep);color:#fff;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(226,58,22,.42),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:48px;padding:72px 0}
.cta-inner h2{font-size:clamp(26px,3vw,38px);margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.72);max-width:560px}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap}

/* ---------- 迷你 FAQ ---------- */
.mini-faq{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mini-faq .mini{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--sh-1);
}
.mini-faq .mini h3{font-size:17px;margin-bottom:12px}
.mini-faq .mini p{font-size:15px;color:var(--ink-2)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 32px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px}
.footer-brand .brand-mark{background:var(--accent);color:#fff}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:18px;color:rgba(255,255,255,.62);line-height:1.8;max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700}
.footer-col li{margin-bottom:12px}
.footer-col a{color:rgba(255,255,255,.68)}
.footer-col a:hover{color:var(--accent);text-decoration:underline}
.footer-sub{display:flex;gap:8px;margin-top:18px}
.footer-sub input{
  flex:1;min-width:0;height:44px;padding:0 12px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);color:#fff;font-size:14px;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.42)}
.footer-sub input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.1)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding-top:24px;
  font-size:13px;color:rgba(255,255,255,.48);
}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 24px;border-radius:var(--r-pill);
  background:var(--accent);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 12px 32px rgba(226,58,22,.32);
  opacity:0;transform:translateY(16px);pointer-events:none;
  transition:opacity .32s ease,transform .32s ease,background .22s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{background:var(--accent-dark)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s cubic-bezier(.2,.7,.2,1),transform .42s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1240px){
  .split{gap:44px}
  .contact-grid{gap:44px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .nav-toggle{
    display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
    width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
    background:var(--surface);align-items:center;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav{
    position:fixed;top:0;left:0;bottom:0;width:min(84vw,340px);
    background:var(--deep);flex-direction:column;align-items:stretch;gap:0;
    padding:22px 24px 32px;overflow-y:auto;z-index:95;
    transform:translateX(-102%);transition:transform .3s cubic-bezier(.2,.7,.2,1);
  }
  .nav.open{transform:translateX(0)}
  .nav-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
  .nav-head .brand-text{color:rgba(255,255,255,.6);font-size:14px;font-weight:600}
  .nav-close{color:#fff;font-size:26px;line-height:1;padding:4px 8px}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid rgba(255,255,255,.09)}
  .nav-list a{display:block;padding:16px 0;font-size:16px;color:rgba(255,255,255,.82)}
  .nav-list a::after{display:none}
  .nav-list a.active{color:var(--lime);font-weight:700}
  .nav-cta{margin-top:26px;width:100%}
  .nav-mask{
    display:block;position:fixed;inset:0;background:rgba(16,20,24,.55);
    opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:90;
  }
  .nav-mask.show{opacity:1;pointer-events:auto}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-strip .stat:nth-child(3){border-left:0}
  .stat-strip .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .split{grid-template-columns:1fr;gap:32px}
  .split.rev .split-media{order:0}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .mini-faq{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:56px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .page-hero{min-height:260px}
  .page-hero .container{padding-top:44px;padding-bottom:44px}
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
  .entry-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr 1fr}
  .form-grid{grid-template-columns:1fr}
  .qa-item{padding-left:16px}
  .qa-a-inner p,.qa-a-inner .qa-tip{margin-left:0;padding-left:0;margin-right:0;padding-right:0}
  .qa-a-inner p{padding-bottom:20px}
  .qa-a-inner .qa-tip{margin-bottom:22px;padding:14px 16px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;width:100%;
    justify-content:center;padding:16px 20px;
    box-shadow:0 -8px 24px rgba(16,20,24,.18);
    transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0)}
  .footer-bottom{padding-bottom:64px}
}
@media (max-width:520px){
  .page-hero h1{font-size:30px}
  .brand-text{font-size:15px}
  .stat-strip{grid-template-columns:1fr}
  .stat-strip .stat{border-left:0}
  .stat-strip .stat+.stat{border-top:1px solid var(--line)}
  .form-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}