/* roulang page: index */
:root{
  --primary:#6D3BF5;
  --primary-deep:#4A21C9;
  --primary-soft:#EDE7FE;
  --accent:#00D9A3;
  --accent-soft:#DFFBF3;
  --hot:#FF6A3D;
  --hot-soft:#FFEDE5;
  --ink:#171223;
  --ink-2:#55506A;
  --ink-3:#8B87A0;
  --bg:#F7F6FB;
  --surface:#FFFFFF;
  --surface-2:#F1EEFA;
  --line:#E6E2F2;
  --dark-panel:#1B1130;
  --danger:#E5484D;
  --grad-brand:linear-gradient(115deg,#6D3BF5 0%,#8A5CF6 40%,#00D9A3 100%);
  --grad-dark:linear-gradient(135deg,#1B1130 0%,#2A1450 60%,#123B36 100%);
  --r-s:12px;
  --r-m:20px;
  --r-l:28px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(23,18,35,.06);
  --sh-2:0 14px 34px -14px rgba(109,59,245,.30);
  --sh-3:0 26px 60px -26px rgba(27,17,48,.35);
  --nav-h:64px;
  --sec-pad:88px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",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:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
time,.num{font-variant-numeric:tabular-nums}
::selection{background:var(--primary-soft);color:var(--primary-deep)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-pad) 0}
.section-alt{background:var(--surface-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,36px)}
.section-sub{margin-top:12px;color:var(--ink-2);font-size:15px;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--primary-deep);background:var(--primary-soft);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:700;color:var(--primary);
  min-height:44px;white-space:nowrap;
}
.link-arrow span{transition:transform .22s ease}
.link-arrow:hover span{transform:translateX(4px)}
.link-arrow:focus-visible{outline:3px solid rgba(109,59,245,.35);outline-offset:3px;border-radius:8px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-3);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line);box-shadow:var(--sh-1)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(109,59,245,.45);color:var(--primary)}
.btn-ghost:active{transform:translateY(1px);box-shadow:none}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.28)}
.btn-light:hover{background:rgba(255,255,255,.22);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px}
.btn:focus-visible{outline:3px solid rgba(109,59,245,.35);outline-offset:2px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.badge-purple{background:var(--primary-soft);color:var(--primary-deep)}
.badge-mint{background:var(--accent-soft);color:#046B52}
.badge-hot{background:var(--hot-soft);color:#B33B12}
.badge-glass{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.24)}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary-deep);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
}

/* ---------- 卡片 ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.22)}
.card-lg{border-radius:var(--r-l);padding:28px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(247,246,251,.94);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -24px rgba(23,18,35,.7);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  height:var(--nav-h);
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  align-items:center;gap:20px;
}
.nav-left{display:flex;align-items:center;gap:22px;min-width:0}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--grad-brand);box-shadow:var(--sh-2);
  display:flex;align-items:center;justify-content:center;color:#fff;
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:2px;min-width:0;overflow:hidden}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;
  min-height:40px;padding:0 12px;border-radius:var(--r-s);
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-menu a.is-active{color:var(--primary);background:var(--primary-soft)}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  border-radius:2px;background:var(--grad-brand);
}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:12px;min-width:0}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;width:100%;max-width:220px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(109,59,245,.18)}
.nav-search svg{width:16px;height:16px;color:var(--ink-3);flex-shrink:0}
.nav-search input{width:100%;border:0;outline:0;background:transparent;font-size:14px}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-s);
  background:var(--surface);border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer-mask{
  position:fixed;inset:0;background:rgba(23,18,35,.45);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:98;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;z-index:99;
  background:var(--surface);box-shadow:var(--sh-3);
  transform:translateX(102%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:22px 20px 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-s);border:1px solid var(--line);
  background:var(--surface-2);cursor:pointer;font-size:20px;line-height:1;color:var(--ink-2);
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
.drawer-nav a{
  display:flex;align-items:center;min-height:46px;padding:0 14px;border-radius:var(--r-s);
  font-size:15px;font-weight:600;color:var(--ink-2);
}
.drawer-nav a.is-active{background:var(--primary-soft);color:var(--primary)}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-s);background:var(--surface-2);margin-bottom:16px;
}
.drawer-search input{border:0;outline:0;background:transparent;width:100%;font-size:15px}
.drawer-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:18px;color:var(--ink-3);font-size:13.5px;line-height:1.9}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:calc(var(--nav-h) + 24px) 0 64px}
.hero::before{
  content:"";position:absolute;left:-12%;right:-12%;top:-24%;height:86%;
  background:linear-gradient(115deg,rgba(109,59,245,.13) 0%,rgba(138,92,246,.10) 42%,rgba(0,217,163,.13) 100%);
  transform:rotate(-6deg);border-radius:0 0 60% 40%/0 0 30% 22%;
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-180px;
  background:radial-gradient(circle,rgba(109,59,245,.28) 0%,rgba(109,59,245,0) 66%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;
}
.hero h1{font-size:clamp(30px,4.2vw,54px);line-height:1.16}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:22px;font-size:16.5px;color:var(--ink-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:var(--r-l);overflow:hidden;
  box-shadow:0 0 0 1px rgba(109,59,245,.22),0 0 0 8px rgba(109,59,245,.05),var(--sh-3);
}
.hero-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.float-card{
  position:absolute;z-index:3;
  background:rgba(255,255,255,.96);border:1px solid var(--line);
  border-radius:var(--r-m);padding:14px 18px;box-shadow:var(--sh-2);
  animation:floaty 6s ease-in-out infinite;
}
.float-card .num{display:block;font-size:22px;font-weight:800;color:var(--primary-deep);line-height:1.2}
.float-card .lbl{font-size:12.5px;color:var(--ink-3);font-weight:600}
.float-a{top:-22px;left:-18px}
.float-b{bottom:-24px;right:-14px;animation-delay:1.6s}
.float-b .num{color:#046B52}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
@media (prefers-reduced-motion:reduce){
  .float-card{animation:none}
  html{scroll-behavior:auto}
  *{transition-duration:.01ms !important}
}

/* ---------- 数据条 ---------- */
.stats-band{
  margin-top:-8px;padding-top:0;
}
.stats-card{
  background:var(--dark-panel);border-radius:var(--r-l);
  padding:38px 32px;box-shadow:var(--sh-3);
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
  position:relative;overflow:hidden;
}
.stats-card::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 88% 0%,rgba(0,217,163,.20),transparent 55%);
  pointer-events:none;
}
.stat{position:relative;padding:0 18px;text-align:center}
.stat + .stat::before{
  content:"";position:absolute;left:0;top:12%;height:76%;width:1px;background:rgba(255,255,255,.14);
}
.stat .num{display:block;font-size:clamp(26px,3vw,38px);font-weight:800;color:#fff;line-height:1.2}
.stat .num i{font-style:normal;color:var(--accent);font-size:.6em;margin-left:2px}
.stat .lbl{display:block;margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.68)}

/* ---------- 步骤轨道 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:30px 26px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.22)}
.step::after{
  content:"";position:absolute;top:50%;right:-24px;width:24px;height:0;
  border-top:2px dashed rgba(109,59,245,.30);
}
.step:last-child::after{display:none}
.step-no{
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;color:var(--primary-deep);
  background:#fff;box-shadow:0 0 0 2px transparent;
  background-image:linear-gradient(#fff,#fff),var(--grad-brand);
  background-origin:border-box;background-clip:padding-box,border-box;
  border:2px solid transparent;
}
.step h3{margin-top:20px;font-size:19px}
.step p{margin-top:12px;color:var(--ink-2);font-size:14.5px}

/* ---------- 案例证明 ---------- */
.case-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px}
.case-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.case-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.22)}
.case-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-main .body{padding:26px 28px 30px}
.case-main h3{font-size:21px;margin-top:14px}
.case-main p{margin-top:12px;color:var(--ink-2);font-size:14.5px}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.case-mini{
  display:grid;grid-template-columns:104px minmax(0,1fr);gap:18px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:20px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.case-mini:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.22)}
.case-mini img{width:104px;height:104px;object-fit:cover;border-radius:var(--r-s)}
.case-mini h4{font-size:16.5px;line-height:1.5}
.case-mini p{margin-top:8px;font-size:13.5px;color:var(--ink-3)}
.case-metric{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.case-metric span{
  background:var(--surface-2);border-radius:var(--r-pill);padding:6px 14px;
  font-size:12.5px;font-weight:700;color:var(--primary-deep);
}

/* ---------- 内容列表（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:20px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.22)}
.news-thumb{display:block;overflow:hidden;border-radius:var(--r-s);margin-bottom:16px;background:var(--surface-2)}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-card h3{font-size:17.5px;line-height:1.55;margin-top:12px}
.news-card h3 a{transition:color .2s ease}
.news-card:hover h3 a{color:var(--primary)}
.news-sum{
  margin-top:10px;color:var(--ink-2);font-size:14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-3);
}
.news-foot .arrow{transition:transform .22s ease}
.news-card:hover .news-foot .arrow{transform:translateX(4px);color:var(--primary)}
.empty-state{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-l);
  padding:56px 24px;text-align:center;box-shadow:var(--sh-1);
}
.empty-ico{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;
  background:var(--surface-2);display:flex;align-items:center;justify-content:center;color:var(--primary);
}
.empty-state p{color:var(--ink-3);font-size:15px;margin-bottom:8px}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sh-1);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  position:relative;width:100%;min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 26px 18px 30px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--ink);
  transition:background .2s ease,color .2s ease;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;
  border-radius:0 4px 4px 0;background:var(--grad-brand);
  opacity:0;transition:opacity .22s ease;
}
.faq-q:hover{background:var(--surface-2)}
.faq-q:hover::before{opacity:1}
.faq-q:focus-visible{outline:3px solid rgba(109,59,245,.35);outline-offset:-3px}
.faq-ico{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary-deep);
  font-size:18px;font-weight:700;line-height:1;transition:transform .25s ease;
}
.faq-item.is-open .faq-ico{transform:rotate(45deg)}
.faq-item.is-open .faq-q{color:var(--primary-deep)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 30px 24px 30px;font-size:15px;color:var(--ink-2);max-width:900px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-l);
  background:var(--grad-dark);box-shadow:var(--sh-3);
  padding:52px 48px;
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:44px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;bottom:-200px;
  background:radial-gradient(circle,rgba(0,217,163,.24),transparent 66%);pointer-events:none;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,34px);position:relative;z-index:2}
.cta-band .lead{color:rgba(255,255,255,.72);margin-top:14px;font-size:15px;position:relative;z-index:2}
.cta-points{display:flex;flex-direction:column;gap:12px;margin-top:24px;position:relative;z-index:2}
.cta-points li{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.88);font-size:14.5px}
.cta-points li i{
  width:20px;height:20px;border-radius:50%;background:rgba(0,217,163,.22);
  color:var(--accent);display:flex;align-items:center;justify-content:center;
  font-style:normal;font-size:12px;font-weight:800;flex-shrink:0;
}
.apply-form{
  position:relative;z-index:2;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-m);padding:26px;
}
.apply-form .field{margin-bottom:16px}
.apply-form label{display:block;font-size:13.5px;font-weight:700;color:rgba(255,255,255,.86);margin-bottom:8px}
.apply-form input{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-s);
  background:rgba(255,255,255,.94);border:1px solid transparent;outline:0;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.apply-form input::placeholder{color:var(--ink-3)}
.apply-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(109,59,245,.35)}
.apply-form input.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.28)}
.err-msg{display:block;min-height:18px;margin-top:6px;font-size:12.5px;color:#FFB4B6}
.form-tip{margin-top:12px;font-size:13.5px;color:rgba(255,255,255,.72);min-height:20px}
.form-tip.ok{color:var(--accent)}
.apply-form .btn{width:100%;margin-top:4px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sec-pad);background:var(--dark-panel);color:rgba(255,255,255,.72);
  border-top:2px solid transparent;
  background-image:linear-gradient(var(--dark-panel),var(--dark-panel)),var(--grad-brand);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.01em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-col a:focus-visible{outline:3px solid rgba(0,217,163,.45);outline-offset:3px;border-radius:6px}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.66);display:flex;gap:8px;align-items:flex-start}
.footer-contact li span{color:rgba(255,255,255,.42);flex-shrink:0}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 0 30px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:rgba(255,255,255,.5);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);color:#fff;font-size:13.5px;font-weight:600;cursor:pointer;
  transition:background .2s ease,transform .2s ease;
}
.to-top:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.to-top:focus-visible{outline:3px solid rgba(0,217,163,.5);outline-offset:2px}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .float-a{left:-8px}
  .float-b{right:-6px}
}
@media (max-width:1024px){
  :root{--sec-pad:64px}
  .nav-menu{display:none}
  .nav-search{display:none}
  .nav-toggle{display:flex}
  .nav-inner{grid-template-columns:minmax(0,1fr) auto}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{order:-1}
  .hero::before{height:70%}
  .case-grid{grid-template-columns:1fr}
  .case-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .stats-card{grid-template-columns:repeat(2,1fr);gap:22px 8px}
  .stat:nth-child(3)::before{display:none}
  .step::after{display:none}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sec-pad:48px}
  .container{padding:0 16px}
  .nav-inner{padding:0 16px;gap:12px}
  .hero{padding-top:calc(56px + 24px)}
  .hero h1{font-size:clamp(27px,7vw,38px)}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .steps{grid-template-columns:1fr;gap:16px}
  .step{padding:24px 20px}
  .step{border-left:2px solid rgba(109,59,245,.25)}
  .step::after{display:block;left:26px;right:auto;top:auto;bottom:-16px;width:0;height:16px;border-top:0;border-left:2px dashed rgba(109,59,245,.3)}
  .step:last-child::after{display:none}
  .news-grid{grid-template-columns:1fr;gap:16px}
  .case-side{grid-template-columns:1fr}
  .case-mini{grid-template-columns:84px minmax(0,1fr);padding:16px}
  .case-mini img{width:84px;height:84px}
  .stats-card{padding:28px 18px}
  .stat{padding:0 10px}
  .faq-q{font-size:15.5px;padding:16px 18px 16px 22px}
  .faq-a p{padding:0 22px 20px 22px}
  .cta-band{padding:32px 22px;border-radius:var(--r-m)}
  .apply-form{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:46px 0 32px}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:560px){
  .hero-actions .btn{width:100%}
  .float-card{padding:11px 14px;border-radius:var(--r-s)}
  .float-card .num{font-size:18px}
  .stats-card{grid-template-columns:1fr;gap:18px}
  .stat + .stat::before{display:none}
  .stat + .stat{border-top:1px solid rgba(255,255,255,.14);padding-top:18px}
  .logo-text{font-size:16px}
  .logo-mark{width:36px;height:36px;border-radius:10px}
}
@media (max-width:420px){
  .hero-badges .badge{font-size:12px;padding:6px 12px}
  .case-metric span{font-size:12px}
}

/* roulang page: article */
:root{
  --primary:#6D3BF5;
  --primary-deep:#4A21C9;
  --primary-soft:#EDE7FE;
  --accent:#00D9A3;
  --accent-soft:#DFFBF3;
  --hot:#FF6A3D;
  --ink:#171223;
  --ink-2:#55506A;
  --ink-3:#8B87A0;
  --bg:#F7F6FB;
  --surface:#FFFFFF;
  --surface-2:#F1EEFA;
  --line:#E6E2F2;
  --dark-panel:#1B1130;
  --danger:#E5484D;
  --grad-brand:linear-gradient(115deg,#6D3BF5 0%,#8A5CF6 40%,#00D9A3 100%);
  --grad-dark:linear-gradient(135deg,#1B1130 0%,#2A1450 60%,#123B36 100%);
  --r-s:12px;
  --r-m:20px;
  --r-l:28px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(23,18,35,.06);
  --sh-2:0 14px 34px -14px rgba(109,59,245,.30);
  --sh-3:0 26px 60px -26px rgba(27,17,48,.35);
  --nav-h:64px;
  --pad-sec:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.02em;line-height:1.3}
p{margin:0}
:focus-visible{outline:3px solid rgba(109,59,245,.35);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-weight:800}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,251,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .24s ease,box-shadow .24s ease,background .24s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  background:rgba(255,255,255,.88);
  box-shadow:0 6px 22px -18px rgba(27,17,48,.55);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:var(--nav-h);
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--grad-brand);
  display:grid;place-items:center;color:#fff;
  box-shadow:var(--sh-2);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-0.01em;white-space:nowrap}
.nav-menu{
  display:flex;align-items:center;gap:4px;
  margin-right:auto;
  flex-wrap:nowrap;
}
.nav-menu a{
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--ink-2);
  position:relative;transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  border-radius:2px;background:var(--grad-brand);opacity:0;transform:scaleX(.4);
  transition:opacity .22s ease,transform .22s ease;
}
.nav-menu a.is-active{color:var(--primary);background:var(--primary-soft)}
.nav-menu a.is-active::after{opacity:1;transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:42px;width:200px;padding:0 14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:box-shadow .2s ease,border-color .2s ease,width .2s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(109,59,245,.14);width:220px}
.nav-search svg{width:17px;height:17px;color:var(--ink-3);flex:0 0 auto}
.nav-search input{border:0;background:transparent;width:100%;font-size:14px;outline:none}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,18,35,.45);
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;
  background:var(--surface);z-index:100;
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:20px;
  box-shadow:var(--sh-3);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  font-size:20px;color:var(--ink-2);background:var(--surface);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 16px;
  border-radius:var(--r-s);font-weight:600;color:var(--ink-2);
  background:var(--surface-2);
}
.drawer-nav a.is-active{background:var(--primary-soft);color:var(--primary)}
.drawer-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:16px;font-size:14px;color:var(--ink-2)}
.drawer-foot p{margin-bottom:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -16px rgba(109,59,245,.55);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:rgba(109,59,245,.4);color:var(--primary);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-ghost:active{transform:translateY(0);box-shadow:none}
.btn-on-dark{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.28)}
.btn-on-dark:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-sm{min-height:42px;padding:0 18px;font-size:14px}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ============ 文章版式 ============ */
.page-wrap{padding:28px 0 88px}
.crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);margin-bottom:18px;
}
.crumbs a{color:var(--ink-2);transition:color .2s ease}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--ink-3);opacity:.7}
.crumbs .current{color:var(--ink-3);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:32px 34px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
}
.article-head::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);
}
.article-tagline{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
  background:var(--primary-soft);color:var(--primary-deep);
}
.tag-accent{background:var(--accent-soft);color:#0A7D63}
.tag-hot{background:rgba(255,106,61,.12);color:#C6421B}
.article-head h1{
  font-size:clamp(26px,3vw,40px);
  line-height:1.32;margin-bottom:16px;
}
.article-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13.5px;color:var(--ink-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.article-meta strong{color:var(--ink-2);font-weight:700}

.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:32px;margin-top:28px;align-items:start;
}
.article-body{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-l);padding:36px 38px;box-shadow:var(--sh-1);
}
.prose{max-width:760px;font-size:16px;line-height:1.9;color:var(--ink)}
.prose>*+*{margin-top:20px}
.prose h2{
  font-size:clamp(21px,2.1vw,26px);
  margin-top:40px;padding-left:14px;position:relative;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--grad-brand);
}
.prose h3{font-size:22px;margin-top:32px;color:var(--ink)}
.prose h4{font-size:18px;margin-top:26px;color:var(--ink-2)}
.prose p{color:var(--ink-2)}
.prose strong{color:var(--ink)}
.prose ul,.prose ol{margin-top:18px;padding-left:22px}
.prose ul{list-style:none}
.prose ul li{position:relative;padding-left:20px;margin-top:10px;color:var(--ink-2)}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:50%;
  background:var(--grad-brand);
}
.prose ol{list-style:decimal}
.prose ol li{margin-top:10px;padding-left:6px;color:var(--ink-2)}
.prose ol li::marker{color:var(--primary);font-weight:800}
.prose blockquote{
  margin:26px 0;padding:18px 22px;border-radius:var(--r-s);
  background:var(--primary-soft);border-left:4px solid var(--primary);
  color:var(--primary-deep);font-weight:600;
}
.prose blockquote p{color:inherit;margin:0}
.prose img{border-radius:var(--r-m);margin:26px auto;box-shadow:var(--sh-1)}
.prose figure{margin:26px 0}
.prose figcaption{text-align:center;font-size:13px;color:var(--ink-3);margin-top:10px}
.prose a{
  color:var(--primary);font-weight:600;
  background-image:linear-gradient(90deg,var(--primary),var(--accent));
  background-repeat:no-repeat;background-size:100% 2px;background-position:0 100%;
  transition:background-size .22s ease;
}
.prose a:hover{background-size:100% 4px}
.prose table{
  width:100%;border-collapse:collapse;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--r-s);overflow:hidden;
}
.prose table th{
  background:var(--primary-soft);color:var(--primary-deep);
  text-align:left;padding:12px 14px;font-weight:700;
}
.prose table td{padding:12px 14px;border-top:1px solid var(--line);color:var(--ink-2)}
.prose code{
  background:var(--surface-2);border-radius:6px;padding:2px 6px;
  font-size:14px;color:var(--primary-deep);font-family:ui-monospace,Menlo,Consolas,monospace;
}

.empty-state{
  text-align:center;padding:48px 20px;border:1px dashed var(--line);
  border-radius:var(--r-m);background:var(--surface-2);
}
.empty-state .empty-icon{
  width:72px;height:72px;margin:0 auto 18px;border-radius:22px;
  background:var(--surface);display:grid;place-items:center;color:var(--primary);
  box-shadow:var(--sh-1);
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--ink-2);margin-bottom:20px}

.article-foot{margin-top:32px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.share-note{font-size:13.5px;color:var(--ink-3)}

/* 侧栏 */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:22px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
}
.side-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);
}
.side-card h3{font-size:16.5px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 em{
  font-style:normal;font-size:11.5px;font-weight:700;letter-spacing:.06em;
  padding:3px 9px;border-radius:var(--r-pill);background:var(--accent-soft);color:#0A7D63;
}
.side-links{display:flex;flex-direction:column;gap:4px}
.side-links a{
  display:flex;align-items:center;gap:10px;min-height:44px;
  padding:0 12px;border-radius:var(--r-s);font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.side-links a span.idx{
  width:24px;height:24px;flex:0 0 auto;border-radius:8px;
  display:grid;place-items:center;font-size:12px;font-weight:800;
  background:var(--surface-2);color:var(--primary-deep);
}
.side-links a:hover{background:var(--primary-soft);color:var(--primary);transform:translateX(3px)}
.side-links a:hover span.idx{background:var(--primary);color:#fff}

.mini-item{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line)}
.mini-item:last-child{border-bottom:0;padding-bottom:0}
.mini-item img{width:76px;height:58px;object-fit:cover;border-radius:var(--r-s);flex:0 0 auto;background:var(--surface-2)}
.mini-item h4{font-size:14.5px;line-height:1.5;font-weight:700;margin-bottom:4px;transition:color .2s ease}
.mini-item:hover h4{color:var(--primary)}
.mini-item time{font-size:12.5px;color:var(--ink-3)}

.side-cta{
  background:var(--grad-dark);color:#fff;border-radius:var(--r-m);
  padding:24px 22px;box-shadow:var(--sh-3);
}
.side-cta h3{font-size:18px;color:#fff;margin-bottom:10px}
.side-cta p{font-size:14px;color:rgba(255,255,255,.78);margin-bottom:16px}
.side-cta .btn{width:100%}

/* 上下篇 & 相关 */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.pager-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.pager-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.25)}
.pager-card span{font-size:12.5px;letter-spacing:.04em;color:var(--ink-3);display:block;margin-bottom:8px}
.pager-card h4{font-size:16.5px;line-height:1.5}
.pager-card.next{text-align:right}

.related{margin-top:64px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:24px;
}
.section-head h2{font-size:clamp(22px,2.3vw,30px)}
.section-head p{font-size:14.5px;color:var(--ink-2);margin-top:8px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--primary)}
.link-more svg{width:16px;height:16px;transition:transform .22s ease}
.link-more:hover svg{transform:translateX(4px)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.25)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-cover .tag{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.92);color:var(--primary-deep)}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:17.5px;line-height:1.5;margin-bottom:10px}
.card-body p{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--ink-3);border-top:1px solid var(--line);
}
.card-foot svg{width:15px;height:15px;transition:transform .22s ease}
.card:hover .card-foot svg{transform:translateX(4px);color:var(--primary)}

/* CTA 带 */
.cta-band{margin-top:72px}
.cta-inner{
  background:var(--grad-dark);border-radius:var(--r-l);
  padding:48px;color:#fff;box-shadow:var(--sh-3);
  display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-inner::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,217,163,.34),transparent 68%);
}
.cta-inner h2{font-size:clamp(23px,2.4vw,32px);color:#fff;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px;margin-bottom:18px}
.cta-points{display:flex;flex-direction:column;gap:10px;position:relative;z-index:1}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:rgba(255,255,255,.9)}
.cta-points svg{width:18px;height:18px;color:var(--accent);flex:0 0 auto}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end;position:relative;z-index:1}

/* 页脚 */
.site-footer{
  margin-top:88px;background:var(--dark-panel);color:rgba(255,255,255,.72);
  border-top:2px solid transparent;
  border-image:linear-gradient(90deg,#6D3BF5,#8A5CF6,#00D9A3) 1;
  padding:56px 0 26px;font-size:14.5px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.site-footer .logo-text{color:#fff}
.footer-brand p{margin-top:16px;line-height:1.8;color:rgba(255,255,255,.66);max-width:340px}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{color:rgba(255,255,255,.7);transition:color .2s ease}
.footer-col ul a:hover{color:var(--accent)}
.footer-contact li{display:flex;gap:8px;flex-wrap:wrap;color:rgba(255,255,255,.66)}
.footer-contact li span{color:rgba(255,255,255,.4)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.5);
}
.to-top{
  min-height:44px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.22);color:#fff;font-size:13.5px;font-weight:600;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.to-top:hover{background:rgba(255,255,255,.12);border-color:var(--accent);transform:translateY(-2px)}

/* 移动端悬浮 CTA */
.mobile-cta{
  display:none;position:fixed;left:16px;right:16px;bottom:16px;z-index:70;
  box-shadow:0 18px 40px -16px rgba(109,59,245,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .nav-search{width:170px}
  .nav-search:focus-within{width:190px}
}
@media (max-width:1024px){
  :root{--pad-sec:64px}
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .layout{grid-template-columns:1fr;gap:24px}
  .sidebar{position:static;display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .side-cta{grid-column:1/-1}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr;padding:40px}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:768px){
  :root{--nav-h:56px;--pad-sec:48px}
  .container{padding:0 16px}
  .nav-search{display:none}
  .article-head{padding:24px 22px}
  .article-body{padding:24px 20px}
  .prose{max-width:100%}
  .sidebar{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .pager-card.next{text-align:left}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-grid{grid-template-columns:1fr}
  .page-wrap{padding:20px 0 72px}
}
@media (max-width:560px){
  .logo-text{font-size:16.5px}
  .logo-mark{width:32px;height:32px;border-radius:10px}
  .article-head h1{font-size:22px}
  .prose h2{font-size:19.5px}
  .prose h3{font-size:18px}
  .cta-inner{padding:28px 20px}
  .cta-actions .btn{width:100%}
  .mobile-cta{display:inline-flex}
  .site-footer{padding-bottom:96px}
}
@media (max-width:420px){
  .header-actions .btn-sm{display:none}
  .crumb-current{max-width:160px}
  .article-meta{font-size:12.5px}
}

/* roulang page: category2 */
:root{
  --primary:#6D3BF5;
  --primary-deep:#4A21C9;
  --primary-soft:#EDE7FE;
  --accent:#00D9A3;
  --accent-soft:#DFFBF3;
  --hot:#FF6A3D;
  --ink:#171223;
  --ink-2:#55506A;
  --ink-3:#8B87A0;
  --bg:#F7F6FB;
  --surface:#FFFFFF;
  --surface-2:#F1EEFA;
  --line:#E6E2F2;
  --dark-panel:#1B1130;
  --danger:#E5484D;
  --grad-brand:linear-gradient(115deg,#6D3BF5 0%,#8A5CF6 40%,#00D9A3 100%);
  --grad-dark:linear-gradient(135deg,#1B1130 0%,#2A1450 60%,#123B36 100%);
  --r-s:12px;
  --r-m:20px;
  --r-l:28px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(23,18,35,.06);
  --sh-2:0 14px 34px -14px rgba(109,59,245,.30);
  --sh-3:0 26px 60px -26px rgba(27,17,48,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.28}
p{margin:0}
svg{display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-weight:800}
::selection{background:var(--primary-soft);color:var(--primary-deep)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,251,.94);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.9);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px -20px rgba(27,17,48,.6);
}
.header-inner{
  display:grid;
  grid-template-columns:7fr 5fr;
  align-items:center;
  gap:20px;
  height:64px;
}
.header-left{display:flex;align-items:center;gap:26px;min-width:0}
.header-right{display:flex;align-items:center;justify-content:flex-end;gap:12px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--grad-brand);
  display:grid;place-items:center;color:#fff;
  box-shadow:var(--sh-2);
}
.logo-mark svg{width:18px;height:18px}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:2px;min-width:0}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;height:36px;
  padding:0 12px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--ink-2);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-menu a.is-active{color:var(--primary);background:var(--primary-soft)}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  border-radius:2px;background:var(--grad-brand);
}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 14px;width:100%;max-width:220px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search svg{width:16px;height:16px;color:var(--ink-3);flex:0 0 auto}
.nav-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(109,59,245,.18)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-s);
  background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;
  background:#fff;z-index:90;padding:22px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(105%);transition:transform .3s ease;overflow-y:auto;
  box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,18,35,.45);z-index:85;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-s);background:#fff;font-size:18px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  display:flex;align-items:center;height:46px;padding:0 14px;border-radius:var(--r-s);
  font-weight:600;color:var(--ink-2);transition:background .2s ease,color .2s ease;
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--primary-soft);color:var(--primary)}
.drawer-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:16px;font-size:14px;color:var(--ink-3);line-height:1.8}
.drawer-foot strong{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,border-color .2s ease,background .2s ease;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 18px 36px -14px rgba(109,59,245,.55)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:rgba(109,59,245,.45);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-ghost:active{transform:translateY(1px);box-shadow:none}
.btn-light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.28);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.22);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn:focus-visible{outline:3px solid rgba(109,59,245,.35);outline-offset:2px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.06em;
  color:var(--primary);background:var(--primary-soft);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.eyebrow.hot{color:#C03A12;background:rgba(255,106,61,.12)}
.eyebrow.mint{color:#0A7A5D;background:var(--accent-soft)}
h2{font-size:clamp(24px,2.6vw,36px)}
.h2-sub{margin-top:14px;color:var(--ink-2);font-size:16px;max-width:720px}
.divider-line{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:62px 0 70px;
  background:
    radial-gradient(760px 340px at 88% -10%,rgba(0,217,163,.20),transparent 62%),
    radial-gradient(620px 300px at -6% 8%,rgba(109,59,245,.16),transparent 66%),
    var(--bg);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
}
.hero-copy h1{font-size:clamp(30px,4vw,48px);margin-bottom:18px}
.hero-copy h1 .hl{
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.pill-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill-nav a{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--ink-2);
  transition:transform .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.pill-nav a:hover{transform:translateY(-2px);border-color:rgba(109,59,245,.45);color:var(--primary);box-shadow:var(--sh-1)}
.pill-nav a::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.hero-visual{
  position:relative;border-radius:var(--r-l);overflow:hidden;
  min-height:300px;box-shadow:var(--sh-3);
  border:1px solid rgba(109,59,245,.18);
  background:var(--surface-2);
}
.hero-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(27,17,48,0) 42%,rgba(27,17,48,.62) 100%);
}
.hero-visual .float-tag{
  position:absolute;z-index:3;left:20px;bottom:20px;right:20px;
  display:flex;gap:12px;flex-wrap:wrap;
}
.hero-visual .float-tag span{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
  color:#fff;font-size:13px;font-weight:600;backdrop-filter:blur(4px);
}
.hero-visual .float-tag b{font-variant-numeric:tabular-nums;font-weight:800;color:#8CF0D6}

/* ---------- 对照表 ---------- */
.compare-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);overflow:hidden;
}
.compare-scroll{overflow-x:auto}
table.compare{width:100%;border-collapse:collapse;min-width:680px}
table.compare thead th{
  background:var(--primary-soft);color:var(--primary-deep);
  font-size:14px;font-weight:800;letter-spacing:.02em;
  text-align:left;padding:18px 24px;border-bottom:1px solid var(--line);
}
table.compare thead th:first-child{width:24%}
table.compare tbody td{
  padding:18px 24px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-2);vertical-align:top;
}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr:hover td{background:#FBF9FF}
table.compare tbody td:first-child{font-weight:700;color:var(--ink)}
.tag-cell{display:inline-flex;align-items:center;gap:6px;font-weight:600}
.tag-cell .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 auto}
.tag-cell .dot.orange{background:var(--hot)}
.compare-note{
  display:flex;gap:12px;align-items:flex-start;
  margin-top:22px;padding:18px 22px;border-radius:var(--r-m);
  background:var(--surface-2);border:1px solid var(--line);
  font-size:15px;color:var(--ink-2);
}
.compare-note svg{width:20px;height:20px;flex:0 0 auto;color:var(--primary);margin-top:3px}

/* ---------- 卡片墙 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-m);padding:26px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.28)}
.card:hover::before{opacity:1}
.card-icon{
  width:44px;height:44px;border-radius:var(--r-s);
  display:grid;place-items:center;margin-bottom:16px;
  background:var(--primary-soft);color:var(--primary);
}
.card-icon.mint{background:var(--accent-soft);color:#0A7A5D}
.card-icon.hot{background:rgba(255,106,61,.12);color:#C03A12}
.card-icon svg{width:22px;height:22px}
.card h3{font-size:18px;margin-bottom:10px}
.card p{color:var(--ink-2);font-size:15px;line-height:1.8}
.card .card-meta{
  display:flex;align-items:center;gap:8px;margin-top:16px;
  font-size:13px;color:var(--ink-3);letter-spacing:.02em;
}
.card .card-meta b{font-variant-numeric:tabular-nums;font-weight:800;color:var(--primary)}

/* ---------- 清单 ---------- */
.checklist{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:32px;box-shadow:var(--sh-1);
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 28px;
}
.checklist li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 8px;border-radius:var(--r-s);
  transition:background .2s ease;
}
.checklist li:hover{background:var(--surface-2)}
.checklist .tick{
  width:26px;height:26px;flex:0 0 auto;border-radius:50%;
  background:var(--accent-soft);color:#0A7A5D;
  display:grid;place-items:center;margin-top:3px;
}
.checklist .tick svg{width:14px;height:14px}
.checklist strong{display:block;font-size:15.5px;font-weight:700;margin-bottom:2px}
.checklist span{font-size:14.5px;color:var(--ink-2);line-height:1.75}

/* ---------- 步骤轨道 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;position:relative}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.28)}
.step-no{
  display:inline-grid;place-items:center;
  width:52px;height:52px;border-radius:50%;
  font-size:17px;font-weight:800;font-variant-numeric:tabular-nums;
  color:var(--primary);background:#fff;
  border:2px solid transparent;
  background-image:linear-gradient(#fff,#fff),var(--grad-brand);
  background-origin:border-box;background-clip:padding-box,border-box;
  margin-bottom:18px;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{font-size:15px;color:var(--ink-2)}
.step-line{
  display:none;
}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 26px;min-height:64px;
  font-size:16.5px;font-weight:700;color:var(--ink);
  position:relative;
  transition:background .2s ease,color .2s ease;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;border-radius:0 4px 4px 0;
  background:var(--grad-brand);opacity:0;transition:opacity .2s ease;
}
.faq-q:hover{background:#FBF9FF;color:var(--primary)}
.faq-q:hover::before{opacity:1}
.faq-q .sign{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;background:var(--surface-2);color:var(--primary);
  font-size:18px;font-weight:700;line-height:1;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item.is-open .faq-q{background:#FBF9FF;color:var(--primary)}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);background:var(--primary);color:#fff}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.is-open .faq-a{max-height:320px}
.faq-a p{
  padding:0 26px 22px 30px;font-size:15px;color:var(--ink-2);line-height:1.85;
}
.faq-q:focus-visible{outline:3px solid rgba(109,59,245,.35);outline-offset:-3px}

/* ---------- 深色 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-l);
  background:var(--grad-dark);
  color:#fff;
  padding:48px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;
  box-shadow:var(--sh-3);
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,217,163,.30),transparent 68%);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.5;pointer-events:none;
}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{color:#fff;margin-bottom:14px}
.cta-copy p{color:rgba(255,255,255,.78);font-size:16px;max-width:520px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-points span{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.2);
  font-size:13.5px;font-weight:600;color:#fff;
}
.cta-points svg{width:14px;height:14px;color:var(--accent)}
.cta-form{
  position:relative;z-index:2;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-m);
  padding:26px;
  backdrop-filter:blur(4px);
}
.cta-form h3{font-size:17px;color:#fff;margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:rgba(255,255,255,.86);margin-bottom:8px}
.field input{
  width:100%;height:44px;border-radius:12px;padding:0 14px;
  background:rgba(255,255,255,.96);
  border:1px solid transparent;color:var(--ink);
  outline:none;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.field input::placeholder{color:var(--ink-3)}
.field input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(109,59,245,.35)}
.field.has-error input{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.28)}
.field-error{display:block;margin-top:6px;font-size:13px;color:#FFB4B6;min-height:18px}
.cta-form .btn{width:100%;margin-top:4px}
.form-tip{
  margin-top:14px;font-size:13.5px;color:rgba(255,255,255,.7);min-height:20px;
}
.form-tip.is-ok{color:var(--accent);font-weight:600}

/* ---------- 信任条 ---------- */
.stat-strip{
  background:var(--dark-panel);border-radius:var(--r-l);
  padding:32px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:8px;box-shadow:var(--sh-3);
}
.stat{
  padding:8px 18px;border-right:1px solid rgba(255,255,255,.12);
}
.stat:last-child{border-right:0}
.stat b{
  display:block;font-size:clamp(26px,3vw,36px);font-weight:800;
  font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat span{display:block;font-size:13.5px;color:rgba(255,255,255,.66);margin-top:4px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--dark-panel);color:rgba(255,255,255,.72);
  margin-top:88px;padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.66);transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.62);line-height:1.7}
.footer-contact span{display:block;font-size:12.5px;color:rgba(255,255,255,.42);letter-spacing:.04em;margin-bottom:2px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.5);
}
.to-top{
  min-height:40px;padding:0 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  color:#fff;font-size:13.5px;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.to-top:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.to-top:focus-visible{outline:3px solid rgba(109,59,245,.5);outline-offset:2px}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .header-inner{gap:14px}
  .nav-menu a{padding:0 9px;font-size:14.5px}
  .nav-search{max-width:180px}
}
@media (max-width:1080px){
  .nav-search{display:none}
  .nav-menu a{padding:0 8px;font-size:14px}
}
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .header-inner{grid-template-columns:auto auto;justify-content:space-between}
  .header-right{grid-column:2}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{min-height:240px}
  .card-grid{grid-template-columns:1fr}
  .checklist{grid-template-columns:1fr;padding:24px}
  .steps{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:30px}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.12);padding:14px 12px}
  .stat:nth-child(odd){border-right:1px solid rgba(255,255,255,.12)}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .page-hero{padding:44px 0 52px}
  .hero-copy h1{font-size:clamp(26px,6.4vw,34px)}
  .hero-lead{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .section{padding:52px 0}
  .section-head{margin-bottom:28px}
  .card{padding:22px}
  .faq-q{padding:18px 20px;font-size:15.5px}
  .faq-a p{padding:0 20px 20px 24px}
  .cta-band{padding:28px;border-radius:var(--r-m)}
  .cta-form{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 24px;margin-top:64px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .logo-text{font-size:16.5px}
  .logo-mark{width:30px;height:30px;border-radius:10px}
  .header-inner{height:56px}
  .btn{padding:0 18px;font-size:14.5px}
  .stat-strip{grid-template-columns:1fr;border-radius:var(--r-m);padding:20px}
  .stat{border-right:0!important;border-bottom:1px solid rgba(255,255,255,.12);padding:12px 6px}
  .stat:last-child{border-bottom:0}
  .pill-nav a{height:38px;font-size:13.5px;padding:0 14px}
  .cta-points span{font-size:13px;padding:6px 12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --primary:#6D3BF5;
  --primary-deep:#4A21C9;
  --primary-soft:#EDE7FE;
  --accent:#00D9A3;
  --accent-soft:#DFFBF3;
  --hot:#FF6A3D;
  --hot-soft:rgba(255,106,61,.10);
  --ink:#171223;
  --ink-2:#55506A;
  --ink-3:#8B87A0;
  --bg:#F7F6FB;
  --surface:#FFFFFF;
  --surface-2:#F1EEFA;
  --line:#E6E2F2;
  --dark-panel:#1B1130;
  --danger:#E5484D;
  --grad:linear-gradient(115deg,#6D3BF5 0%,#8A5CF6 40%,#00D9A3 100%);
  --grad-dark:linear-gradient(135deg,#1B1130 0%,#2A1450 60%,#123B36 100%);
  --r-s:12px;
  --r-m:20px;
  --r-l:28px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(23,18,35,.06);
  --sh-2:0 14px 34px -14px rgba(109,59,245,.30);
  --sh-3:0 26px 60px -26px rgba(27,17,48,.35);
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
:focus-visible{outline:3px solid rgba(109,59,245,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-weight:800}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 40px -14px rgba(109,59,245,.45);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px -8px rgba(109,59,245,.4)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line);box-shadow:var(--sh-1)}
.btn-ghost:hover{border-color:rgba(109,59,245,.4);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px);box-shadow:none}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.3)}
.btn-light:hover{color:#fff;background:rgba(255,255,255,.22);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ===== 标签 / 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
  background:var(--primary-soft);color:var(--primary-deep);
}
.badge-accent{background:var(--accent-soft);color:#04795C}
.badge-hot{background:var(--hot-soft);color:#C24413}
.badge-line{background:var(--surface);color:var(--ink-2);border:1px solid var(--line)}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);background:rgba(255,255,255,.95)}
.header-inner{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  align-items:center;gap:20px;height:64px;
}
.header-left{display:flex;align-items:center;gap:28px;min-width:0}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad);
  display:grid;place-items:center;color:#fff;box-shadow:var(--sh-2);
}
.logo-mark svg{width:18px;height:18px}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.nav-menu{display:flex;align-items:center;gap:4px;min-width:0}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;min-height:36px;
  padding:0 12px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:background-color .2s ease,color .2s ease;
}
.nav-menu a:hover{background:var(--surface-2);color:var(--primary)}
.nav-menu a.is-active{background:var(--primary-soft);color:var(--primary-deep)}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);
}
.header-right{display:flex;align-items:center;justify-content:flex-end;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;width:210px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--surface);transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(109,59,245,.18)}
.nav-search svg{width:16px;height:16px;color:var(--ink-3);flex:0 0 auto}
.nav-search input{flex:1;min-width:0;border:none;outline:none;background:transparent;font-size:14px}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,18,35,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;
  background:var(--surface);z-index:100;padding:24px 22px 32px;
  transform:translateX(105%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;box-shadow:var(--sh-3);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--ink-2)}
.drawer-nav{display:grid;gap:6px;margin-bottom:20px}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;
  border-radius:var(--r-s);font-size:15.5px;font-weight:600;color:var(--ink-2);
}
.drawer-nav a.is-active{background:var(--primary-soft);color:var(--primary-deep)}
.drawer-nav a:hover{background:var(--surface-2)}
.drawer-foot{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-3);display:grid;gap:8px}
.drawer-foot strong{color:var(--ink);font-weight:700}

/* ===== 分类页 Hero ===== */
.hero{
  position:relative;overflow:hidden;
  padding:calc(64px + 48px) 0 64px;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;top:-140px;right:-160px;width:660px;height:560px;
  background:linear-gradient(115deg,rgba(109,59,245,.20) 0%,rgba(138,92,246,.16) 40%,rgba(0,217,163,.22) 100%);
  transform:rotate(-14deg);border-radius:120px;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;top:-60px;right:38%;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,217,163,.34) 0%,rgba(0,217,163,0) 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;
}
.hero-copy .badge{margin-bottom:18px}
.hero h1{font-size:clamp(28px,3.6vw,44px);margin-bottom:18px}
.hero-sub{font-size:16.5px;color:var(--ink-2);max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.anchor-pills{display:flex;flex-wrap:wrap;gap:10px}
.anchor-pills a{
  display:inline-flex;align-items:center;min-height:38px;padding:0 16px;
  border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--line);
  font-size:13.5px;font-weight:600;color:var(--ink-2);box-shadow:var(--sh-1);
}
.anchor-pills a:hover{color:var(--primary);border-color:rgba(109,59,245,.4);transform:translateY(-2px)}
.hero-visual{position:relative}
.hero-frame{
  border-radius:var(--r-l);padding:6px;background:var(--grad);
  box-shadow:var(--sh-3);
}
.hero-frame img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:calc(var(--r-l) - 6px);
  background:var(--surface-2);
}
.hero-chip{
  position:absolute;left:-18px;bottom:26px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:14px 18px;box-shadow:var(--sh-2);min-width:172px;
}
.hero-chip .num{display:block;font-size:26px;color:var(--primary-deep);line-height:1.2}
.hero-chip span{font-size:13px;color:var(--ink-3)}
.hero-chip-2{
  position:absolute;right:-12px;top:18px;
  background:var(--dark-panel);color:#fff;border-radius:var(--r-pill);
  padding:10px 16px;font-size:13px;font-weight:700;box-shadow:var(--sh-3);
}

/* ===== 板块 ===== */
section{padding:88px 0}
.section-alt{background:var(--surface)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.section-head p{color:var(--ink-2)}
.section-head .badge{margin-bottom:14px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ===== 对比维度四格 ===== */
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.fact-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:24px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.fact-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);opacity:0;transition:opacity .22s ease;
}
.fact-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.25)}
.fact-card:hover::before{opacity:1}
.fact-card h3{font-size:17px;margin:14px 0 8px}
.fact-card p{font-size:14.5px;color:var(--ink-2);line-height:1.8}
.fact-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary-deep);font-weight:800;font-size:14px;
}
.fact-card:nth-child(2) .fact-icon{background:var(--accent-soft);color:#04795C}
.fact-card:nth-child(3) .fact-icon{background:var(--hot-soft);color:#C24413}
.fact-card:nth-child(4) .fact-icon{background:var(--surface-2);color:var(--ink-2)}

/* ===== 横向时间轴 ===== */
.timeline{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:26px;right:26px;top:22px;height:2px;
  background:var(--grad);opacity:.32;border-radius:2px;
}
.tl-item{position:relative;padding-top:62px}
.tl-dot{
  position:absolute;top:0;left:0;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;background:var(--grad);color:#fff;
  font-size:13.5px;font-weight:800;font-variant-numeric:tabular-nums;
  box-shadow:0 10px 22px -10px rgba(109,59,245,.55);
}
.tl-item h3{font-size:16.5px;margin-bottom:8px}
.tl-item p{font-size:14px;color:var(--ink-2);line-height:1.8}

/* ===== 渠道画像 ===== */
.channel-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:start}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  box-shadow:var(--sh-1);padding:26px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.25)}
.card-lg{border-radius:var(--r-l);padding:28px}
.card-img{border-radius:var(--r-s);overflow:hidden;margin-bottom:20px;background:var(--surface-2)}
.card-img img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease}
.card:hover .card-img img{transform:scale(1.03)}
.card h3{font-size:19px;margin-bottom:10px}
.card p{font-size:14.8px;color:var(--ink-2)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.channel-side{display:grid;gap:24px}
.mini-card{display:grid;grid-template-columns:110px 1fr;gap:18px;align-items:center}
.mini-card .thumb{border-radius:var(--r-s);overflow:hidden;background:var(--surface-2)}
.mini-card .thumb img{width:100%;aspect-ratio:1/1;object-fit:cover;transition:transform .35s ease}
.mini-card:hover .thumb img{transform:scale(1.04)}
.mini-card h3{font-size:17px;margin-bottom:6px}
.mini-card p{font-size:14px}
.metric-row{display:flex;gap:22px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.metric-row div span{display:block;font-size:12.5px;color:var(--ink-3)}
.metric-row div strong{font-size:20px;color:var(--primary-deep);font-variant-numeric:tabular-nums}

/* ===== 场景条 ===== */
.scene-list{display:grid;gap:16px}
.scene-item{
  display:grid;grid-template-columns:56px 1fr auto;gap:20px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.25)}
.scene-icon{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary-deep);font-weight:800;
}
.scene-item:nth-child(2) .scene-icon{background:var(--accent-soft);color:#04795C}
.scene-item:nth-child(3) .scene-icon{background:var(--hot-soft);color:#C24413}
.scene-item h3{font-size:17.5px;margin-bottom:4px}
.scene-item p{font-size:14.5px;color:var(--ink-2)}

/* ===== 引言卡 ===== */
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.quote-card{
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-l);
  padding:28px;position:relative;
}
.quote-card::before{
  content:"";position:absolute;left:28px;top:0;width:44px;height:4px;border-radius:0 0 4px 4px;background:var(--grad);
}
.quote-card p{font-size:15.5px;color:var(--ink);margin:18px 0 16px}
.quote-meta{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-3)}
.quote-avatar{
  width:34px;height:34px;border-radius:50%;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:800;
}

/* ===== FAQ ===== */
.faq-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:10px 28px;box-shadow:var(--sh-1);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:16px 0;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--ink);position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:-28px;top:12px;bottom:12px;width:4px;border-radius:4px;
  background:var(--grad);opacity:0;transition:opacity .22s ease;
}
.faq-item:hover .faq-q::before,.faq-item.is-open .faq-q::before{opacity:1}
.faq-item:hover .faq-q{color:var(--primary)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{font-size:15px;color:var(--ink-2);line-height:1.85;padding:0 0 22px;max-width:900px}

/* ===== CTA ===== */
.cta-band{
  background:var(--grad-dark);border-radius:var(--r-l);color:#fff;
  padding:48px;display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center;
  box-shadow:var(--sh-3);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,217,163,.30) 0%,rgba(0,217,163,0) 70%);
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{font-size:clamp(23px,2.4vw,32px);color:#fff;margin-bottom:14px}
.cta-copy p{color:rgba(255,255,255,.78);font-size:15.5px;margin-bottom:20px}
.cta-points{display:grid;gap:10px}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:rgba(255,255,255,.9)}
.cta-points li::before{
  content:"";width:18px;height:18px;border-radius:50%;flex:0 0 18px;
  background:rgba(0,217,163,.22);border:1px solid rgba(0,217,163,.6);
  background-image:linear-gradient(115deg,rgba(0,217,163,.9),rgba(109,59,245,.9));
  box-shadow:inset 0 0 0 3px rgba(27,17,48,.9);
}
.cta-form{
  position:relative;z-index:1;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-l);padding:26px;
}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:14px;font-weight:600;color:rgba(255,255,255,.86);margin-bottom:8px}
.form-row input{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.10);
  color:#fff;font-size:14.5px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row input::placeholder{color:rgba(255,255,255,.45)}
.form-row input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,217,163,.28)}
.form-row.has-error input{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.22)}
.form-err{display:none;font-size:13px;color:#FFB3B5;margin-top:6px}
.form-row.has-error .form-err{display:block}
.form-note{font-size:12.8px;color:rgba(255,255,255,.55);margin-top:12px}
.form-success{
  display:none;margin-top:14px;padding:12px 16px;border-radius:var(--r-s);
  background:rgba(0,217,163,.16);border:1px solid rgba(0,217,163,.45);
  font-size:14px;color:#CFFFF1;
}
.form-success.is-show{display:block}
.cta-band .btn-primary{width:100%}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--dark-panel);color:rgba(255,255,255,.72);
  position:relative;padding:64px 0 28px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:800}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-col ul a:hover{color:var(--accent)}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);display:grid;gap:2px}
.footer-contact li span{font-size:12.5px;color:rgba(255,255,255,.45)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.5);
}
.to-top{
  min-height:40px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.8);font-size:13.5px;
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.to-top:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px)}

/* ===== 响应式 ===== */
@media (max-width:1280px){
  .header-left{gap:18px}
  .nav-search{width:180px}
}
@media (max-width:1024px){
  section{padding:64px 0}
  .nav-menu,.nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{grid-template-columns:1fr auto}
  .hero{padding:calc(64px + 36px) 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero::before{width:420px;height:380px;top:-120px;right:-140px}
  .hero-chip{left:12px;bottom:16px}
  .hero-chip-2{right:12px}
  .fact-grid{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:1fr;gap:0}
  .timeline::before{left:21px;right:auto;top:12px;bottom:12px;width:2px;height:auto}
  .tl-item{padding:0 0 28px 68px}
  .channel-layout{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:36px}
  .quote-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  section{padding:48px 0}
  .hero{padding:calc(56px + 28px) 0 48px}
  .header-inner{height:56px}
  .logo-text{font-size:16.5px}
  .hero-sub{font-size:15.5px}
  .fact-grid{grid-template-columns:1fr;gap:16px}
  .scene-item{grid-template-columns:48px 1fr;gap:16px;padding:20px}
  .scene-item .badge{grid-column:2}
  .mini-card{grid-template-columns:88px 1fr}
  .faq-card{padding:6px 18px}
  .faq-q{font-size:15.5px}
  .faq-q::before{left:-18px}
  .cta-band{padding:28px;border-radius:var(--r-m)}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-brand p{max-width:none}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-chip{position:static;margin-top:16px;min-width:0}
  .hero-chip-2{display:none}
  .metric-row{flex-wrap:wrap;gap:16px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-points li{font-size:13.8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* roulang page: category1 */
:root{
  --primary:#6D3BF5;
  --primary-deep:#4A21C9;
  --primary-soft:#EDE7FE;
  --accent:#00D9A3;
  --accent-soft:#DFFBF3;
  --hot:#FF6A3D;
  --ink:#171223;
  --ink-2:#55506A;
  --ink-3:#8B87A0;
  --bg:#F7F6FB;
  --surface:#FFFFFF;
  --surface-2:#F1EEFA;
  --line:#E6E2F2;
  --dark-panel:#1B1130;
  --danger:#E5484D;
  --grad-brand:linear-gradient(115deg,#6D3BF5 0%,#8A5CF6 40%,#00D9A3 100%);
  --grad-dark:linear-gradient(135deg,#1B1130 0%,#2A1450 60%,#123B36 100%);
  --r-s:12px;
  --r-m:20px;
  --r-l:28px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(23,18,35,.06);
  --sh-2:0 14px 34px -14px rgba(109,59,245,.30);
  --sh-3:0 26px 60px -26px rgba(27,17,48,.35);
  --nav-h:64px;
  --sec-pad:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.02em;line-height:1.28}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
img{max-width:100%;display:block;height:auto}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:3px solid rgba(109,59,245,.35);outline-offset:2px;border-radius:6px}
::selection{background:var(--primary-soft);color:var(--primary-deep)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-pad) 0}
.section--tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--primary-deep);background:var(--primary-soft);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.section-head h2{font-size:clamp(24px,2.6vw,36px);margin-bottom:14px}
.section-head p{color:var(--ink-2);font-size:16px}
.muted{color:var(--ink-3)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(10px);
  transition:box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px -18px rgba(23,18,35,.45);
}
.nav-inner{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  align-items:center;
  gap:20px;
  height:var(--nav-h);
}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--grad-brand);
  display:grid;place-items:center;color:#fff;
  box-shadow:var(--sh-2);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-0.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:4px;min-width:0}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;
  height:38px;padding:0 12px;
  font-size:15px;font-weight:600;color:var(--ink-2);
  border-radius:var(--r-pill);
  white-space:nowrap;
}
.nav-menu a:hover{color:var(--primary-deep);background:var(--primary-soft)}
.nav-menu a.is-active{color:var(--primary-deep);background:var(--primary-soft)}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--grad-brand);border-radius:2px;
}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;width:200px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--surface);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:rgba(109,59,245,.45);box-shadow:0 0 0 4px rgba(109,59,245,.12)}
.nav-search svg{width:16px;height:16px;color:var(--ink-3);flex:0 0 auto}
.nav-search input{
  border:0;background:none;width:100%;min-width:0;
  font-size:14px;outline:none;
}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:.25s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.nav-overlay{
  position:fixed;inset:0;background:rgba(23,18,35,.45);
  opacity:0;visibility:hidden;transition:.25s ease;z-index:90;
}
.nav-overlay.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;
  background:var(--surface);z-index:100;
  transform:translateX(102%);transition:transform .28s ease;
  padding:24px 22px 32px;
  display:flex;flex-direction:column;gap:22px;
  overflow-y:auto;box-shadow:var(--sh-3);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:20px;color:var(--ink-2);background:var(--surface);
}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:var(--r-s);
  font-weight:600;color:var(--ink-2);
}
.drawer-links a:hover,.drawer-links a.is-active{background:var(--primary-soft);color:var(--primary-deep)}
.drawer-search{display:flex;align-items:center;gap:8px;height:46px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-pill)}
.drawer-search input{border:0;background:none;outline:none;width:100%;font-size:15px}
.drawer-contact{border-top:1px solid var(--line);padding-top:18px;font-size:14px;color:var(--ink-2);display:flex;flex-direction:column;gap:8px}
.drawer-contact span{color:var(--ink-3);margin-right:8px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{color:#fff;background:var(--grad-brand);box-shadow:var(--sh-2)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 18px 34px -16px rgba(109,59,245,.55)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{color:var(--primary-deep);background:var(--surface);border-color:var(--line)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(109,59,245,.4);box-shadow:var(--sh-1);color:var(--primary)}
.btn-light{color:var(--ink);background:#fff;border-color:transparent}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none!important}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(760px 340px at 90% -20%,rgba(0,217,163,.20),transparent 68%),
    radial-gradient(620px 380px at 6% 110%,rgba(109,59,245,.16),transparent 70%),
    var(--surface);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(109,59,245,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(109,59,245,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;
  padding:72px 0 72px;
  min-height:380px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:var(--ink-3)}
.breadcrumb .current{color:var(--ink-3)}
.page-hero h1{font-size:clamp(30px,4.2vw,48px);margin-bottom:18px}
.page-hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{color:var(--ink-2);font-size:17px;max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.anchor-pills{display:flex;flex-wrap:wrap;gap:10px}
.anchor-pills a{
  display:inline-flex;align-items:center;gap:6px;
  min-height:36px;padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);
  font-size:13px;font-weight:600;color:var(--ink-2);
}
.anchor-pills a:hover{border-color:rgba(109,59,245,.4);color:var(--primary-deep);transform:translateY(-2px);box-shadow:var(--sh-1)}
.hero-visual{position:relative}
.hero-visual .frame{
  position:relative;
  border-radius:var(--r-l);
  padding:2px;
  background:var(--grad-brand);
  box-shadow:var(--sh-3);
}
.hero-visual .frame img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:calc(var(--r-l) - 2px);
  background:var(--surface-2);
}
.float-badge{
  position:absolute;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:12px 16px;
  box-shadow:var(--sh-2);
  animation:floaty 6s ease-in-out infinite;
}
.float-badge .num{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--primary-deep);line-height:1.2}
.float-badge .lbl{font-size:12px;color:var(--ink-3);letter-spacing:.04em}
.badge-a{left:-18px;bottom:34px}
.badge-b{right:-10px;top:26px;animation-delay:1.6s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@media (prefers-reduced-motion:reduce){
  .float-badge{animation:none}
  html{scroll-behavior:auto}
}

/* ============ 数据条 ============ */
.stats-band{
  background:var(--dark-panel);
  border-radius:var(--r-l);
  padding:34px 28px;
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:10px;box-shadow:var(--sh-3);
  margin-top:-38px;position:relative;z-index:5;
}
.stat{position:relative;text-align:center;padding:0 12px}
.stat + .stat::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:1px;
  background:rgba(255,255,255,.14);
}
.stat .num{
  font-size:clamp(26px,3vw,36px);font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat .lbl{color:rgba(255,255,255,.68);font-size:13px;margin-top:4px}

/* ============ 左文右图 ============ */
.split{
  display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);
  gap:56px;align-items:center;
}
.split h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:18px}
.split p{color:var(--ink-2);margin-bottom:16px}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:22px}
.check-list li{display:flex;gap:12px;align-items:flex-start;color:var(--ink-2);font-size:15px}
.check-list li strong{color:var(--ink)}
.tick{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:var(--accent-soft);color:#067a5c;
  display:grid;place-items:center;font-size:12px;font-weight:800;margin-top:5px;
}
.figure-card{
  border-radius:var(--r-l);overflow:hidden;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.figure-card img{aspect-ratio:16/11;object-fit:cover;width:100%}
.figure-card figcaption{
  padding:14px 20px;font-size:13px;color:var(--ink-3);
  border-top:1px solid var(--line);background:var(--surface);
}

/* ============ 步骤 ============ */
.steps{display:flex;flex-direction:column;gap:18px}
.step{
  display:grid;grid-template-columns:66px minmax(0,1fr);gap:22px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:24px 28px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(109,59,245,.2);box-shadow:var(--sh-2)}
.step-num{
  width:58px;height:58px;border-radius:50%;
  background:var(--grad-brand);padding:2px;display:grid;place-items:center;
}
.step-num span{
  width:100%;height:100%;border-radius:50%;
  display:grid;place-items:center;
  background:var(--surface);color:var(--primary-deep);
  font-weight:800;font-size:17px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:19px;margin-bottom:8px}
.step p{color:var(--ink-2);font-size:15px}
.step .tagline{
  display:inline-block;margin-top:10px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  color:#067a5c;background:var(--accent-soft);
  padding:4px 12px;border-radius:var(--r-pill);
}

/* ============ 场景卡片 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.scene-card{
  position:relative;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  border-radius:var(--r-m) var(--r-m) 0 0;background:var(--grad-brand);
  opacity:0;transition:opacity .22s ease;
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(109,59,245,.2);box-shadow:var(--sh-2)}
.scene-card:hover::before{opacity:1}
.scene-icon{
  width:46px;height:46px;border-radius:14px;background:var(--primary-soft);
  color:var(--primary-deep);display:grid;place-items:center;margin-bottom:18px;
}
.scene-icon svg{width:22px;height:22px}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{color:var(--ink-2);font-size:15px}
.scene-card .meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.pill{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:4px 12px;border-radius:var(--r-pill);
}
.pill-purple{background:var(--primary-soft);color:var(--primary-deep)}
.pill-mint{background:var(--accent-soft);color:#067a5c}
.pill-hot{background:rgba(255,106,61,.10);color:#c8471f}

/* ============ FAQ ============ */
.faq-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item{position:relative;border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;
  border-radius:0 4px 4px 0;background:var(--grad-brand);
  opacity:0;transition:opacity .2s ease;
}
.faq-item:hover::before,.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 26px;text-align:left;
  font-size:17px;font-weight:700;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary-deep)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:var(--surface-2);color:var(--primary-deep);
  display:grid;place-items:center;font-size:17px;font-weight:700;
  transition:transform .25s ease,background-color .25s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--primary-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 26px 22px;color:var(--ink-2);font-size:15px;line-height:1.8;max-width:900px}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--grad-dark);
  border-radius:var(--r-l);
  padding:52px;
  color:#fff;
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:44px;align-items:center;
  box-shadow:var(--sh-3);
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,217,163,.35),transparent 65%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px;color:#fff}
.cta-band p{color:rgba(255,255,255,.76);margin-bottom:20px;max-width:520px}
.cta-points{display:flex;flex-direction:column;gap:12px;margin-bottom:6px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.86)}
.cta-points .tick{background:rgba(0,217,163,.20);color:#5ff0c8}
.cta-form{
  position:relative;z-index:2;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-m);
  padding:26px;
  backdrop-filter:blur(6px);
}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:14px;font-weight:600;color:#fff;margin-bottom:8px}
.form-field input{
  width:100%;height:46px;padding:0 14px;
  border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.94);
  color:var(--ink);font-size:15px;outline:none;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.form-field input::placeholder{color:var(--ink-3)}
.form-field input:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(0,217,163,.25)}
.form-field.has-error input{border-color:var(--danger);box-shadow:0 0 0 4px rgba(229,72,77,.22)}
.field-error{display:none;margin-top:8px;font-size:13px;color:#ffb3b5}
.form-field.has-error .field-error{display:block}
.cta-form .btn{width:100%}
.form-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.6);text-align:center}
.form-success{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-s);
  background:rgba(0,217,163,.16);border:1px solid rgba(0,217,163,.4);
  color:#b9ffe8;font-size:14px;text-align:center;
}
.form-success.is-visible{display:block}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:var(--sec-pad);
  background:var(--dark-panel);
  color:rgba(255,255,255,.72);
  padding:64px 0 26px;
  font-size:14px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand);
}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:40px;
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{color:rgba(255,255,255,.62);line-height:1.8;max-width:360px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:0}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.66)}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{display:flex;flex-wrap:wrap;gap:6px;color:rgba(255,255,255,.7)}
.footer-contact span{color:rgba(255,255,255,.42)}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.to-top{
  min-height:44px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);
  color:rgba(255,255,255,.8);font-size:13px;font-weight:600;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.to-top:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-search{width:160px}
  .nav-menu a{padding:0 10px;font-size:14px}
}
@media (max-width:1024px){
  :root{--sec-pad:64px}
  .nav-inner{grid-template-columns:auto auto;justify-content:space-between}
  .nav-menu{display:none}
  .nav-search{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:56px 0 64px;min-height:0}
  .hero-visual{max-width:620px}
  .split{grid-template-columns:1fr;gap:36px}
  .cta-band{grid-template-columns:1fr;padding:40px}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:22px 10px;padding:28px 20px}
  .stat:nth-child(3)::before{display:none}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .scene-grid{grid-template-columns:1fr}
  .step{grid-template-columns:52px minmax(0,1fr);gap:16px;padding:20px}
  .step-num{width:48px;height:48px}
  .step-num span{font-size:15px}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a p{padding:0 18px 20px}
  .cta-band{padding:32px 22px;border-radius:var(--r-m)}
  .float-badge .num{font-size:18px}
  .badge-a{left:-8px;bottom:18px}
  .badge-b{right:-6px;top:14px}
}
@media (max-width:560px){
  :root{--sec-pad:48px}
  body{font-size:15.5px}
  .hero-grid{padding:44px 0 52px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .stats-band{grid-template-columns:1fr;gap:20px}
  .stat + .stat::before{display:none}
  .stat{text-align:left;padding:0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:420px){
  .logo-text{font-size:16px}
  .page-hero h1{font-size:26px}
  .anchor-pills a{font-size:12px;padding:0 12px}
}

/* roulang page: category4 */
:root{
  --primary:#6D3BF5;
  --primary-deep:#4A21C9;
  --primary-soft:#EDE7FE;
  --accent:#00D9A3;
  --accent-soft:#DFFBF3;
  --hot:#FF6A3D;
  --ink:#171223;
  --ink-2:#55506A;
  --ink-3:#8B87A0;
  --bg:#F7F6FB;
  --surface:#FFFFFF;
  --surface-2:#F1EEFA;
  --line:#E6E2F2;
  --dark-panel:#1B1130;
  --danger:#E5484D;
  --grad-brand:linear-gradient(115deg,#6D3BF5 0%,#8A5CF6 40%,#00D9A3 100%);
  --grad-dark:linear-gradient(135deg,#1B1130 0%,#2A1450 60%,#123B36 100%);
  --r-s:12px;
  --r-m:20px;
  --r-l:28px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(23,18,35,.06);
  --sh-2:0 14px 34px -14px rgba(109,59,245,.30);
  --sh-3:0 26px 60px -26px rgba(27,17,48,.35);
  --sp:88px;
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary-deep)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.28}
p{margin:0}
svg{display:block}
:focus-visible{outline:3px solid rgba(109,59,245,.35);outline-offset:2px;border-radius:6px}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-primary{background-image:var(--grad-brand);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 20px 40px -18px rgba(109,59,245,.55);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 18px -12px rgba(109,59,245,.5)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line);box-shadow:var(--sh-1)}
.btn-ghost:hover{color:var(--primary);border-color:rgba(109,59,245,.4);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost:active{transform:translateY(1px);box-shadow:var(--sh-1)}
.btn-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-light:hover{color:#fff;background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;line-height:1.5;
}
.badge-violet{background:rgba(109,59,245,.09);color:var(--primary-deep)}
.badge-mint{background:rgba(0,217,163,.12);color:#04765b}
.badge-hot{background:rgba(255,106,61,.12);color:#B93D16}
.badge-dark{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.18)}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-pill);
  background:var(--surface-2);color:var(--ink-2);
  font-size:12.5px;font-weight:600;letter-spacing:.03em;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(6px);
  transition:box-shadow .25s ease,border-color .25s ease,background-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 28px -22px rgba(27,17,48,.45);
  background:rgba(255,255,255,.86);
}
.header-inner{
  display:grid;grid-template-columns:7fr 5fr;align-items:center;
  gap:24px;min-height:var(--nav-h);
}
.header-left{display:flex;align-items:center;gap:28px;min-width:0}
.header-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  background-image:var(--grad-brand);
  display:grid;place-items:center;color:#fff;
  box-shadow:var(--sh-2);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.logo:hover .logo-text{color:var(--primary-deep)}

.nav-menu{display:flex;align-items:center;gap:4px;min-width:0;flex-wrap:wrap}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;height:40px;padding:0 13px;
  border-radius:var(--r-pill);
  color:var(--ink-2);font-size:14.5px;font-weight:600;
  transition:background-color .2s ease,color .2s ease;
}
.nav-menu a:hover{background:var(--surface-2);color:var(--primary-deep)}
.nav-menu a.is-active{background:var(--primary-soft);color:var(--primary-deep)}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  border-radius:2px;background-image:var(--grad-brand);
}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--surface);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(109,59,245,.18)}
.nav-search svg{width:16px;height:16px;color:var(--ink-3);flex:0 0 auto}
.nav-search input{
  border:0;background:transparent;width:100%;font-size:14px;min-height:auto;
}
.nav-search input:focus{outline:none}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;margin:3px auto}

.drawer-mask{
  position:fixed;inset:0;background:rgba(23,18,35,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;
  background:var(--surface);z-index:96;
  transform:translateX(105%);transition:transform .3s ease;
  padding:22px 22px 32px;display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;box-shadow:var(--sh-3);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;font-size:20px;color:var(--ink-2)}
.drawer-links{display:flex;flex-direction:column;gap:6px}
.drawer-links a{
  display:flex;align-items:center;min-height:46px;padding:0 14px;border-radius:var(--r-s);
  color:var(--ink);font-weight:600;font-size:15px;
}
.drawer-links a:hover{background:var(--surface-2);color:var(--primary-deep)}
.drawer-links a.is-active{background:var(--primary-soft);color:var(--primary-deep)}
.drawer-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:18px;font-size:13.5px;color:var(--ink-2);line-height:1.9}
.drawer-foot strong{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(var(--nav-h) + 34px) 0 56px;
  background:
    radial-gradient(680px 340px at 88% 8%,rgba(0,217,163,.16),transparent 70%),
    linear-gradient(180deg,#F4F1FE 0%,rgba(247,246,251,0) 90%);
}
.page-hero::before{
  content:"";position:absolute;top:0;left:-6%;width:62%;height:100%;
  background:linear-gradient(115deg,rgba(109,59,245,.10),rgba(0,217,163,.05));
  transform:skewX(-14deg);pointer-events:none;
}
.page-hero .hero-grid{
  position:relative;
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
}
.crumb{font-size:13px;color:var(--ink-3);margin-bottom:14px}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--primary)}
.crumb span{margin:0 6px}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  margin-bottom:16px;
}
.page-hero h1 em{font-style:normal;color:var(--primary);position:relative;white-space:nowrap}
.page-hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:8px;
  background:rgba(0,217,163,.28);border-radius:6px;z-index:-1;
}
.hero-lead{max-width:600px;color:var(--ink-2);font-size:16.5px}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-pills a{
  display:inline-flex;align-items:center;min-height:40px;padding:0 16px;
  border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--line);
  color:var(--ink-2);font-size:14px;font-weight:600;box-shadow:var(--sh-1);
  transition:transform .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.hero-pills a:hover{color:var(--primary-deep);border-color:rgba(109,59,245,.45);transform:translateY(-2px);box-shadow:var(--sh-2)}
.hero-visual{position:relative}
.hero-visual .frame{
  border-radius:var(--r-l);overflow:hidden;padding:1px;
  background-image:var(--grad-brand);
  box-shadow:var(--sh-3);
}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:calc(var(--r-l) - 1px)}
.hero-note{
  position:absolute;left:-14px;bottom:-18px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:14px 18px;box-shadow:var(--sh-2);min-width:190px;
}
.hero-note b{display:block;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--primary-deep);line-height:1.2}
.hero-note small{display:block;font-size:13px;color:var(--ink-3);letter-spacing:.03em}

/* ============ 数据徽章带 ============ */
.stat-band{padding:0 0 var(--sp)}
.stat-card{
  background:var(--dark-panel);
  border-radius:var(--r-l);
  padding:34px 30px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
  color:#fff;box-shadow:var(--sh-3);
  background-image:var(--grad-dark);
}
.stat-item{padding:6px 22px;border-left:1px solid rgba(255,255,255,.14)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-item b{
  display:block;font-size:clamp(26px,3vw,38px);font-weight:800;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.15;
  background:linear-gradient(100deg,#FFFFFF 30%,#9CF5DF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-item span{display:block;margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.7);letter-spacing:.03em}

/* ============ 板块通用 ============ */
.section{padding:var(--sp) 0}
.section-alt{background:var(--surface)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:12.5px;font-weight:800;letter-spacing:.1em;color:var(--primary);
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background-image:var(--grad-brand)}
.section-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.section-head p{color:var(--ink-2)}

/* ============ 图文清单 ============ */
.check-block + .check-block{margin-top:44px}
.check-block > h3{
  display:flex;align-items:center;gap:12px;
  font-size:20px;margin-bottom:16px;
}
.check-block > h3 i{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  background:var(--primary-soft);color:var(--primary-deep);
  display:grid;place-items:center;font-style:normal;font-size:14px;font-weight:800;
}
.check-list{display:grid;gap:14px}
.check-item{
  display:grid;grid-template-columns:46px 1fr;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:18px 22px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(109,59,245,.22)}
.check-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background-image:var(--grad-brand);color:#fff;box-shadow:var(--sh-2);
}
.check-icon svg{width:22px;height:22px}
.check-item h4{font-size:17px;margin-bottom:6px}
.check-item p{color:var(--ink-2);font-size:15px}
.check-item .mini{
  display:inline-block;margin-top:8px;font-size:12.5px;font-weight:700;letter-spacing:.04em;
  color:#B93D16;background:rgba(255,106,61,.12);padding:3px 10px;border-radius:var(--r-pill);
}

/* ============ 排查路径（时间线） ============ */
.path-wrap{
  border-radius:var(--r-l);border:1px solid var(--line);background:var(--surface);
  padding:32px 30px;box-shadow:var(--sh-1);
}
.path-wrap h3{font-size:20px;margin-bottom:20px}
.path-list{display:grid;gap:18px}
.path-list li{
  position:relative;padding-left:36px;color:var(--ink-2);font-size:15px;
}
.path-list li::before{
  content:"";position:absolute;left:9px;top:9px;width:10px;height:10px;border-radius:50%;
  background-image:var(--grad-brand);box-shadow:0 0 0 4px rgba(109,59,245,.12);
}
.path-list li::after{
  content:"";position:absolute;left:13px;top:24px;bottom:-16px;width:2px;
  background:linear-gradient(180deg,rgba(109,59,245,.35),rgba(0,217,163,.15));
}
.path-list li:last-child::after{display:none}
.path-list li b{color:var(--ink);font-weight:700}

/* ============ FAQ 手风琴 ============ */
.faq-shell{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:12px 28px;box-shadow:var(--sh-1);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  position:relative;width:100%;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 0 16px 16px;
  font-size:16.5px;font-weight:700;color:var(--ink);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:4px;
  background-image:var(--grad-brand);opacity:0;transition:opacity .2s ease;
}
.faq-q:hover::before,.faq-item.is-open .faq-q::before{opacity:1}
.faq-q:hover{color:var(--primary-deep)}
.faq-q .sign{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  color:var(--primary-deep);font-size:17px;font-weight:700;line-height:1;
  transition:transform .25s ease,background-color .2s ease,color .2s ease;
}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);background:var(--primary-soft);border-color:transparent}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s ease,padding .3s ease;
  padding:0 46px 0 16px;
}
.faq-item.is-open .faq-a{max-height:320px;padding:0 46px 20px 16px}
.faq-a p{color:var(--ink-2);font-size:15px}

/* ============ CTA ============ */
.cta-section{padding:0 0 var(--sp)}
.cta-card{
  border-radius:var(--r-l);
  background-image:var(--grad-dark);
  color:#fff;padding:52px 48px;
  display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;
  box-shadow:var(--sh-3);
}
.cta-card h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:16px}
.cta-card p{color:rgba(255,255,255,.75);max-width:520px}
.cta-points{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-points span{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);
  font-size:13.5px;color:#fff;
}
.cta-points svg{width:15px;height:15px;color:var(--accent)}
.form-panel{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-m);padding:24px;
}
.form-panel h3{font-size:17px;margin-bottom:16px;color:#fff}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;color:rgba(255,255,255,.7);margin-bottom:6px}
.field input{
  width:100%;height:44px;padding:0 14px;border-radius:12px;
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.94);
  color:var(--ink);font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--ink-3)}
.field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,217,163,.28)}
.field.is-error input{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.25)}
.field .err{display:none;margin-top:6px;font-size:12.5px;color:#FFB4B6}
.field.is-error .err{display:block}
.form-panel .btn{width:100%;margin-top:6px}
.form-tip{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.55);line-height:1.7}
.form-done{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-s);
  background:rgba(0,217,163,.16);border:1px solid rgba(0,217,163,.35);
  color:#B8FFEC;font-size:13.5px;
}
.form-done.is-show{display:block}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--dark-panel);color:rgba(255,255,255,.72);
  padding:64px 0 26px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background-image:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{font-size:13.5px;color:rgba(255,255,255,.68)}
.footer-contact span{
  display:inline-block;min-width:66px;color:rgba(255,255,255,.42);
}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.to-top{
  min-height:40px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.2);color:#fff;font-size:13px;
  transition:background-color .2s ease,transform .2s ease,border-color .2s ease;
}
.to-top:hover{background:rgba(255,255,255,.12);border-color:rgba(0,217,163,.5);transform:translateY(-2px)}

/* ============ 断点 ============ */
@media (max-width:1280px){
  :root{--sp:72px}
  .stat-card{padding:28px 22px}
}
@media (max-width:1024px){
  :root{--sp:64px;--nav-h:60px}
  .header-inner{grid-template-columns:1fr auto}
  .nav-menu{display:none}
  .nav-search{width:180px}
  .nav-toggle{display:grid}
  .page-hero .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{max-width:560px}
  .stat-card{grid-template-columns:repeat(2,1fr);gap:22px}
  .stat-item{border-left:0;padding:0}
  .stat-item:nth-child(even){border-left:1px solid rgba(255,255,255,.14);padding-left:22px}
  .cta-card{grid-template-columns:1fr;gap:32px;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sp:52px}
  .container{padding:0 18px}
  .header-right .nav-search{display:none}
  .header-right .btn-primary{display:none}
  .page-hero{padding:calc(var(--nav-h) + 24px) 0 40px}
  .hero-note{position:static;margin-top:16px;display:inline-block}
  .cta-card{padding:32px 22px}
  .faq-shell{padding:8px 18px}
  .faq-q{font-size:15.5px}
  .faq-item.is-open .faq-a{padding:0 12px 18px 16px}
  .check-item{grid-template-columns:40px 1fr;padding:16px}
  .check-icon{width:40px;height:40px;border-radius:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:560px){
  :root{--sp:48px}
  .stat-card{grid-template-columns:1fr;padding:24px 20px}
  .stat-item:nth-child(even){border-left:0;padding-left:0}
  .stat-item + .stat-item{border-top:1px solid rgba(255,255,255,.12);padding-top:16px}
  .btn{width:100%}
  .hero-pills a{width:100%;justify-content:center}
  .path-wrap{padding:24px 20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:420px){
  .page-hero h1{font-size:28px}
  .logo-text{font-size:16px}
  .faq-q{padding-left:12px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}