/* roulang page: index */
:root{
  --brand-1:#7A4DFF;
  --brand-2:#FF6A3D;
  --grad-brand:linear-gradient(115deg,#7A4DFF 0%,#FF6A3D 100%);
  --lime:#C8F25C;
  --ink-900:#171425;
  --ink-700:#2A2637;
  --body:#1F1D28;
  --muted:#5C586B;
  --line:#E8E3DA;
  --surface:#FFFFFF;
  --surface-2:#F8F6F2;
  --radius-lg:24px;
  --radius-md:20px;
  --radius-sm:14px;
  --shadow-1:0 2px 6px rgba(23,20,37,.04),0 12px 32px rgba(23,20,37,.08);
  --shadow-2:0 20px 48px rgba(122,77,255,.16);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--surface-2);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-1);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease;}
a:hover{color:var(--brand-2);}
p{margin:0 0 18px;color:var(--body);}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 18px;padding-left:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;box-shadow:0 0 0 4px rgba(122,77,255,.18);}
h1,h2,h3,h4{margin:0;color:var(--body);font-weight:700;letter-spacing:-.01em;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
.section{padding:104px 0;}
.section.tight{padding:76px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--brand-1);
  font-weight:600;margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(200,242,92,.28);}
.h2{font-size:clamp(24px,3vw,38px);line-height:1.28;margin-bottom:16px;}
.h3{font-size:clamp(19px,2vw,24px);line-height:1.4;font-weight:600;margin-bottom:12px;}
.lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:640px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 30px;border-radius:999px;border:1px solid transparent;
  font-size:16px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:all .22s ease;text-align:center;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 26px rgba(122,77,255,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 38px rgba(122,77,255,.34);background:linear-gradient(135deg,#7A4DFF 0%,#FF6A3D 100%);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--body);box-shadow:0 2px 6px rgba(23,20,37,.04);}
.btn-ghost:hover{border-color:var(--brand-1);color:var(--brand-1);background:rgba(122,77,255,.06);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--muted);font-weight:600;
}
.pill .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(200,242,92,.3);}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(122,77,255,.10);color:var(--brand-1);letter-spacing:.02em;
}
.tag.orange{background:rgba(255,106,61,.12);color:#D9481F;}

/* ---------- 导航 ---------- */
.site-header{padding:20px 0 0;position:relative;z-index:60;}
.nav-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:14px 18px;
  display:flex;align-items:center;gap:18px;
}
.brand{display:flex;align-items:baseline;gap:8px;flex-shrink:0;}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--grad-brand);display:flex;align-items:center;justify-content:center;color:#fff;font-size:17px;flex-shrink:0;align-self:center;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:19px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.14em;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:nowrap;}
.nav-item{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:9px 12px;border-radius:var(--radius-sm);
  font-size:13px;font-weight:600;color:var(--muted);
  border:1px solid transparent;position:relative;white-space:nowrap;
}
.nav-item i{font-size:14px;color:var(--brand-1);opacity:.85;}
.nav-item:hover{background:rgba(122,77,255,.08);color:var(--brand-1);transform:translateY(-1px);}
.nav-item.active{background:rgba(122,77,255,.10);color:var(--brand-1);}
.nav-item.active::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:3px;border-radius:999px;background:var(--grad-brand);}
.nav-cta{margin-left:12px;flex-shrink:0;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);font-size:18px;cursor:pointer;
}
.mobile-panel{
  display:none;position:fixed;inset:0;z-index:200;background:rgba(23,20,37,.55);
  backdrop-filter:blur(2px);
}
.mobile-panel.open{display:block;}
.mobile-panel-inner{
  position:absolute;top:0;right:0;width:min(340px,86vw);height:100%;
  background:var(--ink-900);padding:22px;overflow-y:auto;
}
.mobile-panel-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.mobile-panel-top .brand-main{color:#fff;}
.mobile-panel-top .brand-sub{color:rgba(255,255,255,.5);}
.mobile-close{background:rgba(255,255,255,.1);border:none;color:#fff;width:40px;height:40px;border-radius:12px;font-size:16px;cursor:pointer;}
.mobile-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:15px 16px;border-radius:var(--radius-sm);margin-bottom:10px;
  background:rgba(255,255,255,.06);color:#fff;font-size:15px;font-weight:600;
  border:1px solid rgba(255,255,255,.08);
}
.mobile-link i{color:var(--brand-2);font-size:13px;}
.mobile-link.active{background:rgba(122,77,255,.28);border-color:rgba(122,77,255,.5);}
.mobile-link:hover{color:#fff;background:rgba(122,77,255,.22);}
.mobile-panel .btn{width:100%;margin-top:10px;}

/* ---------- Hero ---------- */
.hero{padding:56px 0 68px;}
.hero-card{
  background:#fff;border:1px solid var(--line);border-radius:32px;
  box-shadow:var(--shadow-1);padding:56px 48px;overflow:hidden;position:relative;
}
.hero-card::before{
  content:"";position:absolute;top:-140px;right:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,77,255,.14),rgba(122,77,255,0) 70%);pointer-events:none;
}
.hero-title{
  font-size:clamp(30px,4.2vw,52px);line-height:1.16;letter-spacing:-.02em;font-weight:800;
  margin:20px 0 18px;max-width:12em;
}
.hl{
  position:relative;display:inline-block;color:var(--ink-900);
  background:linear-gradient(180deg,transparent 62%,rgba(122,77,255,.28) 62%,rgba(255,106,61,.28) 96%,transparent 96%);
  padding:0 4px;border-radius:6px;
}
.hero-sub{font-size:18px;line-height:1.75;color:var(--muted);max-width:30em;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;padding-top:22px;border-top:1px dashed var(--line);}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);font-weight:600;}
.hero-trust i{color:var(--brand-1);font-size:14px;}
.hero-visual{position:relative;padding:6px 0 26px;}
.hero-img-wrap{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 18px 44px rgba(23,20,37,.16);
  background:rgba(122,77,255,.08);
  aspect-ratio:4/3;
}
.hero-img-wrap::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);pointer-events:none;
}
.hero-img-wrap img{width:100%;height:100%;object-fit:cover;}
.float-card{
  position:absolute;right:-10px;bottom:-6px;width:212px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-2);padding:18px 18px 16px;z-index:2;
}
.float-card::before{content:"";position:absolute;left:18px;top:0;width:52px;height:4px;border-radius:0 0 4px 4px;background:var(--grad-brand);}
.float-num{font-size:40px;font-weight:800;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--ink-900);}
.float-num span{font-size:14px;font-weight:600;color:var(--muted);margin-left:4px;}
.float-label{font-size:13px;color:var(--muted);margin:8px 0 10px;}
.progress{height:6px;border-radius:999px;background:rgba(122,77,255,.12);overflow:hidden;}
.progress span{display:block;height:100%;width:88%;border-radius:999px;background:var(--grad-brand);}

/* ---------- 承接窄卡 ---------- */
.bridge-band{padding:0 0 8px;}
.bridge-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px;display:flex;gap:14px;align-items:flex-start;height:100%;
  box-shadow:0 2px 6px rgba(23,20,37,.04);transition:all .22s ease;
}
.bridge-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(122,77,255,.35);}
.bridge-icon{
  width:42px;height:42px;border-radius:14px;background:rgba(122,77,255,.10);
  display:flex;align-items:center;justify-content:center;color:var(--brand-1);font-size:17px;flex-shrink:0;
}
.bridge-title{font-size:16px;font-weight:700;margin-bottom:4px;}
.bridge-text{font-size:14px;color:var(--muted);line-height:1.7;margin:0;}

/* ---------- 能力卡错位 ---------- */
.mosaic-row{margin-bottom:24px;}
.f-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;height:100%;box-shadow:0 2px 6px rgba(23,20,37,.04);
  transition:all .24s ease;display:flex;flex-direction:column;
}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(122,77,255,.4);}
.f-icon{
  width:46px;height:46px;border-radius:15px;background:rgba(122,77,255,.10);
  display:flex;align-items:center;justify-content:center;color:var(--brand-1);font-size:19px;margin-bottom:18px;
}
.f-card h3{font-size:20px;margin-bottom:10px;font-weight:700;}
.f-card p{font-size:15px;color:var(--muted);line-height:1.8;margin:0;}
.f-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--brand-2);margin-top:18px;}
.f-link:hover{gap:12px;color:var(--brand-1);}
.img-card{padding:0;overflow:hidden;}
.img-card .img-box{position:relative;aspect-ratio:16/10;overflow:hidden;background:rgba(122,77,255,.08);}
.img-card .img-box img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.img-card:hover .img-box img{transform:scale(1.04);}
.img-card .img-box .tag{position:absolute;left:16px;top:16px;background:#fff;box-shadow:0 2px 8px rgba(23,20,37,.12);}
.img-card .img-body{padding:26px 28px 28px;}
.img-card .img-body p{margin-bottom:0;}

/* ---------- 数据横幅 ---------- */
.stats-band{
  background:var(--ink-900);border-radius:32px;padding:64px 48px;position:relative;overflow:hidden;color:#fff;
}
.stats-band::after{
  content:"";position:absolute;right:-100px;top:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,77,255,.42),rgba(122,77,255,0) 68%);pointer-events:none;
}
.stats-band .h2{color:#fff;position:relative;z-index:1;}
.stats-band .lead{color:rgba(255,255,255,.66);position:relative;z-index:1;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;z-index:1;margin-top:40px;}
.stat-item{padding:6px 26px;border-left:1px solid rgba(255,255,255,.10);}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-num{font-size:clamp(34px,4vw,52px);font-weight:800;line-height:1.05;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:#fff;}
.stat-num span{font-size:14px;font-weight:600;margin-left:5px;color:var(--lime);}
.stat-label{font-size:14px;color:rgba(255,255,255,.62);margin-top:10px;}

/* ---------- 场景案例 ---------- */
.case-wide{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-1);height:100%;display:flex;flex-direction:column;
}
.case-wide .case-img{aspect-ratio:16/9;overflow:hidden;background:rgba(122,77,255,.08);}
.case-wide .case-img img{width:100%;height:100%;object-fit:cover;}
.case-wide .case-body{padding:32px;position:relative;}
.case-wide h3{font-size:24px;margin-bottom:12px;}
.case-wide p{font-size:15px;color:var(--muted);}
.round-arrow{
  position:absolute;right:28px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:var(--grad-brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;
  box-shadow:0 10px 24px rgba(122,77,255,.3);transition:transform .2s ease;
}
.case-wide:hover .round-arrow{transform:translate(3px,-3px);}
.case-narrow{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:28px;
  height:100%;transition:all .22s ease;
}
.case-narrow:hover{border-color:rgba(122,77,255,.4);transform:translateY(-3px);box-shadow:var(--shadow-2);}
.case-narrow h4{font-size:17px;margin:14px 0 8px;font-weight:700;}
.case-narrow p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.75;}

/* ---------- 方案区 ---------- */
.plan-sticky{position:sticky;top:32px;}
.plan-card{
  display:flex;align-items:center;gap:20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-md);padding:24px 26px;margin-bottom:16px;transition:all .22s ease;
}
.plan-card:hover{border-color:rgba(122,77,255,.45);transform:translateX(4px);box-shadow:var(--shadow-1);}
.plan-icon{
  width:48px;height:48px;border-radius:15px;background:rgba(122,77,255,.10);color:var(--brand-1);
  display:flex;align-items:center;justify-content:center;font-size:19px;flex-shrink:0;
}
.plan-text{flex:1;min-width:0;}
.plan-text h3{font-size:18px;margin-bottom:6px;font-weight:700;}
.plan-text p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.7;}
.plan-arrow{color:var(--brand-2);font-size:15px;flex-shrink:0;}

/* ---------- 最新信息 ---------- */
.news-item{
  display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-md);padding:22px 24px;margin-bottom:14px;
  transition:all .22s ease;color:var(--body);
}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);border-color:rgba(122,77,255,.4);color:var(--body);}
.news-main{flex:1;min-width:0;}
.news-title{
  font-size:17.5px;font-weight:700;line-height:1.5;margin:8px 0 6px;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  font-size:14.5px;color:var(--muted);line-height:1.7;margin:0 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.news-meta i{color:var(--brand-1);font-size:12px;}
.news-arrow{
  width:42px;height:42px;border-radius:50%;background:rgba(255,106,61,.12);color:var(--brand-2);
  display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;transition:all .22s ease;
}
.news-item:hover .news-arrow{background:var(--grad-brand);color:#fff;transform:translateX(3px);}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-md);
  padding:52px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--brand-1);opacity:.6;margin-bottom:14px;display:block;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px;}
.sidebar-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:26px;box-shadow:0 2px 6px rgba(23,20,37,.04);margin-bottom:20px;
}
.sidebar-card h4{font-size:15px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.sidebar-card h4::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand-2);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;}
.tag-cloud a{
  padding:7px 14px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);
  font-size:13px;color:var(--muted);font-weight:600;
}
.tag-cloud a:hover{background:rgba(122,77,255,.10);border-color:rgba(122,77,255,.35);color:var(--brand-1);}
.sidebar-cta{background:var(--ink-900);border-radius:var(--radius-md);padding:26px;color:#fff;}
.sidebar-cta h4{color:#fff;font-size:17px;margin-bottom:10px;}
.sidebar-cta p{color:rgba(255,255,255,.62);font-size:14px;line-height:1.75;margin-bottom:18px;}
.sidebar-cta .btn{width:100%;}

/* ---------- FAQ ---------- */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:12px;
  overflow:hidden;transition:border-color .2s ease;
}
.faq-item.open{border-color:rgba(122,77,255,.5);box-shadow:0 8px 24px rgba(122,77,255,.10);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  background:none;border:none;padding:20px 22px;cursor:pointer;font-size:16.5px;
  font-weight:600;color:var(--ink-900);line-height:1.5;
}
.faq-q::before{content:"";width:3px;height:22px;border-radius:999px;background:var(--grad-brand);flex-shrink:0;}
.faq-sign{
  margin-left:auto;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--brand-1);
  flex-shrink:0;transition:all .2s ease;
}
.faq-item.open .faq-sign{background:var(--brand-1);border-color:var(--brand-1);color:#fff;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 22px 22px 39px;font-size:15px;color:var(--muted);line-height:1.8;}
.help-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:28px;box-shadow:var(--shadow-1);
}
.help-card h4{font-size:18px;margin-bottom:12px;}
.help-card p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.help-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted);margin-bottom:12px;}
.help-list i{color:var(--brand-1);margin-top:5px;font-size:13px;}

/* ---------- 表单 ---------- */
.contact-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:36px;box-shadow:var(--shadow-1);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px;}
.field input,.field textarea,.field select{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;font-size:15px;color:var(--body);line-height:1.6;
  transition:border-color .2s ease,box-shadow .2s ease;appearance:none;
}
.field textarea{min-height:120px;resize:vertical;}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(122,77,255,.14);
}
.field input::placeholder,.field textarea::placeholder{color:#A9A4B4;}
.form-note{font-size:13px;color:var(--muted);margin-top:12px;}
.info-card{
  background:var(--ink-900);border-radius:var(--radius-lg);padding:32px;color:#fff;height:100%;
}
.info-card h4{color:#fff;font-size:18px;margin-bottom:20px;}
.info-row{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.10);}
.info-row:last-of-type{border-bottom:none;}
.info-row i{color:var(--lime);font-size:15px;margin-top:4px;}
.info-row .k{font-size:13px;color:rgba(255,255,255,.55);margin-bottom:2px;}
.info-row .v{font-size:15px;color:#fff;font-weight:600;}
.map-box{
  margin-top:20px;border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.14);
  aspect-ratio:16/9;background:rgba(255,255,255,.06);
}
.map-box img{width:100%;height:100%;object-fit:cover;opacity:.9;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#fff;margin-top:96px;position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:70px 0 48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:11px;}
.footer-brand .brand-main{color:#fff;font-size:19px;font-weight:800;}
.footer-brand .brand-sub{color:rgba(255,255,255,.45);}
.footer-desc{font-size:14.5px;color:rgba(255,255,255,.62);line-height:1.85;max-width:32ch;}
.footer-col h5{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;display:flex;align-items:center;gap:8px;}
.footer-col h5::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-2);}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{font-size:14.5px;color:rgba(255,255,255,.64);display:inline-block;transition:all .2s ease;}
.footer-col ul li a:hover{color:var(--lime);transform:translateX(2px);}
.footer-contact li{font-size:14.5px;color:rgba(255,255,255,.64);display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;}
.footer-contact i{color:var(--brand-2);margin-top:5px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.46);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .section{padding:76px 0;}
  .hero-card{padding:40px 32px;}
  .stats-band{padding:48px 32px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat-item:nth-child(3){border-left:none;padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .plan-sticky{position:static;margin-bottom:8px;}
}
@media screen and (max-width:768px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .hero{padding:38px 0 48px;}
  .hero-card{padding:32px 22px;border-radius:24px;}
  .hero-title{max-width:none;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-trust{gap:14px 20px;}
  .float-card{position:relative;right:auto;bottom:auto;width:100%;margin-top:-26px;}
  .hero-visual{padding-bottom:0;}
  .stats-band{padding:40px 22px;border-radius:24px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .stat-item{padding:0 0 0 18px;}
  .stat-item:nth-child(odd){border-left:none;padding-left:0;}
  .news-item{padding:18px;gap:12px;}
  .news-title{font-size:16px;}
  .contact-wrap{padding:24px;}
  .info-card{padding:26px;margin-top:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .case-wide .case-body{padding:24px;}
  .round-arrow{position:static;margin-top:18px;}
}
@media screen and (max-width:520px){
  .brand-main{font-size:17px;}
  .brand-sub{font-size:10.5px;letter-spacing:.1em;}
  .hero-card{padding:26px 18px;}
  .f-card{padding:24px;}
  .img-card{padding:0;}
  .faq-q{font-size:15px;padding:16px 16px;gap:10px;}
  .faq-a-inner{padding:0 16px 18px 32px;}
  .news-arrow{display:none;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-item{border-left:none;padding-left:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --brand-1:#7A4DFF;
  --brand-2:#FF6A3D;
  --grad-brand:linear-gradient(115deg,#7A4DFF 0%,#FF6A3D 100%);
  --lime:#C8F25C;
  --ink-900:#171425;
  --ink-700:#2A2637;
  --body:#1F1D28;
  --muted:#5C586B;
  --line:#E8E3DA;
  --surface:#FFFFFF;
  --surface-2:#F8F6F2;
  --tint:#F1ECFF;
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:14px;
  --r-xs:12px;
  --shadow-1:0 2px 6px rgba(23,20,37,.04),0 12px 32px rgba(23,20,37,.08);
  --shadow-2:0 20px 48px rgba(122,77,255,.16);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--surface-2);
  -webkit-font-smoothing:antialiased;
}
body.menu-open{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--brand-1);text-decoration:none;transition:color var(--ease),background var(--ease);}
a:hover{color:var(--brand-2);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--body);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand-1);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(122,77,255,.18);
}

/* ============ 导航 ============ */
.site-header{padding:24px 0 0;position:sticky;top:0;z-index:70;}
.nav-card{
  position:relative;
  display:flex;
  align-items:center;
  gap:18px;
  padding:12px 16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  box-shadow:var(--shadow-1);
}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad-brand);color:#fff;font-size:17px;
  box-shadow:0 8px 20px rgba(122,77,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12;}
.brand-main{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900);}
.brand-sub{font-size:11px;letter-spacing:.18em;color:var(--muted);}
.nav-links{display:flex;align-items:center;gap:6px;flex:1;justify-content:center;}
.nav-item{
  position:relative;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 14px 13px;
  border-radius:var(--r-sm);
  font-size:14px;font-weight:500;color:var(--ink-700);
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.nav-item i{font-size:13px;color:var(--muted);transition:color var(--ease);}
.nav-item:hover{background:rgba(122,77,255,.08);color:var(--brand-1);transform:translateY(-1px);}
.nav-item:hover i{color:var(--brand-1);}
.nav-item.active{background:var(--tint);color:var(--brand-1);font-weight:600;}
.nav-item.active i{color:var(--brand-1);}
.nav-item.active::after{
  content:'';position:absolute;left:14px;right:14px;bottom:6px;height:3px;
  border-radius:999px;background:var(--grad-brand);
}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);background:var(--surface);
  color:var(--ink-900);font-size:17px;cursor:pointer;
  align-items:center;justify-content:center;
  transition:background var(--ease),border-color var(--ease);
}
.nav-toggle:hover{background:rgba(122,77,255,.08);border-color:var(--brand-1);color:var(--brand-1);}
.nav-mask{
  position:fixed;inset:0;background:rgba(23,20,37,.55);
  opacity:0;pointer-events:none;transition:opacity var(--ease);z-index:60;
}
.nav-mask.show{opacity:1;pointer-events:auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 28px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn i{font-size:13px;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(122,77,255,.26);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 38px rgba(122,77,255,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink-900);}
.btn-ghost:hover{border-color:var(--brand-1);background:rgba(122,77,255,.06);color:var(--brand-1);transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 通用标签 ============ */
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--tint);color:var(--brand-1);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.chip::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--lime);}
.chip-dark{background:rgba(122,77,255,.18);color:#EDE7FF;}

/* ============ 面包屑 ============ */
.crumb-bar{padding:28px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand-1);}
.breadcrumb .sep{color:#C6C0D6;font-size:11px;}
.breadcrumb .current{
  color:var(--ink-900);font-weight:600;max-width:60ch;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章头 ============ */
.article-head{position:relative;padding:26px 0 44px;overflow:hidden;}
.article-head::before{
  content:'';position:absolute;top:-160px;right:-120px;width:460px;height:460px;
  border-radius:50%;background:radial-gradient(circle,rgba(122,77,255,.16),transparent 68%);
  pointer-events:none;
}
.article-head-inner{position:relative;max-width:880px;}
.article-head h1{
  font-size:clamp(28px,4vw,46px);
  line-height:1.2;letter-spacing:-.02em;font-weight:800;
  margin:18px 0 20px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:13.5px;color:var(--muted);}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--brand-1);font-size:13px;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFC9DC;}

/* ============ 布局 ============ */
.layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;padding-bottom:8px;}
.article-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:40px;box-shadow:var(--shadow-1);
}
.article-body{max-width:720px;}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.3vw,27px);line-height:1.35;
  margin:42px 0 16px;padding-left:18px;letter-spacing:-.01em;
}
.article-body h2:first-child{margin-top:0;}
.article-body h2::before{
  content:'';position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:999px;background:var(--grad-brand);
}
.article-body h3{font-size:clamp(18px,1.8vw,21px);margin:30px 0 12px;color:var(--ink-700);}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--ink-700);}
.article-body p{font-size:16px;line-height:1.9;color:#2C2838;margin:0 0 18px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:10px;line-height:1.85;color:#2C2838;}
.article-body li::marker{color:var(--brand-1);font-weight:700;}
.article-body blockquote{
  margin:26px 0;padding:20px 24px;
  background:rgba(122,77,255,.06);
  border-left:4px solid var(--brand-1);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:#3A3552;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:24px auto;border:1px solid var(--line);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--brand-1);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-2);}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;border-radius:var(--r-sm);overflow:hidden;}
.article-body thead{background:var(--tint);}
.article-body th{
  padding:13px 16px;text-align:left;font-weight:600;color:var(--brand-1);
  border-bottom:2px solid var(--line);
}
.article-body td{padding:13px 16px;border-bottom:1px solid var(--line);color:#2C2838;}
.article-body tr:last-child td{border-bottom:none;}
.article-body hr{border:none;height:1px;background:var(--line);margin:32px 0;}

/* 空态 */
.empty-state{text-align:center;padding:60px 20px;}
.empty-state .empty-icon{
  width:72px;height:72px;border-radius:22px;margin:0 auto 22px;
  display:flex;align-items:center;justify-content:center;
  background:var(--tint);color:var(--brand-1);font-size:28px;
}
.empty-state h2{font-size:22px;margin-bottom:12px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:26px;}

/* ============ 侧栏 ============ */
.sidebar{display:flex;flex-direction:column;gap:20px;align-self:start;position:sticky;top:110px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--shadow-1);
}
.side-title{
  display:flex;align-items:center;gap:9px;
  font-size:14px;font-weight:700;color:var(--ink-900);
  letter-spacing:.02em;margin-bottom:18px;
}
.side-title::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--lime);}
.toc-list{display:flex;flex-direction:column;gap:4px;}
.toc-item{
  display:block;padding:9px 12px;border-radius:10px;
  font-size:14px;color:var(--muted);line-height:1.55;
  border-left:2px solid transparent;
  transition:all var(--ease);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-item:hover{background:rgba(122,77,255,.07);color:var(--brand-1);}
.toc-item.current{background:var(--tint);color:var(--brand-1);font-weight:600;border-left-color:var(--brand-1);}
.rel-list{display:flex;flex-direction:column;gap:14px;}
.rel-item{display:block;padding-bottom:14px;border-bottom:1px dashed var(--line);}
.rel-item:last-child{padding-bottom:0;border-bottom:none;}
.rel-item strong{display:block;font-size:14.5px;font-weight:600;color:var(--ink-900);line-height:1.5;margin-bottom:5px;transition:color var(--ease);}
.rel-item:hover strong{color:var(--brand-1);}
.rel-item span{font-size:12.5px;color:var(--muted);}
.side-cta{
  background:var(--ink-900);border-radius:var(--r-lg);padding:26px;
  background-image:radial-gradient(circle at 100% 0,rgba(122,77,255,.42),transparent 62%);
  color:#fff;
}
.side-cta h4{color:#fff;font-size:17px;margin-bottom:10px;}
.side-cta p{color:rgba(255,255,255,.68);font-size:13.5px;line-height:1.75;margin-bottom:18px;}

/* ============ 上下篇 ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px;}
.post-nav-item{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px 22px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-nav-item:hover{border-color:var(--brand-1);transform:translateY(-3px);box-shadow:var(--shadow-2);}
.post-nav-item .pn-icon{
  width:42px;height:42px;flex-shrink:0;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--tint);color:var(--brand-1);font-size:15px;
}
.post-nav-item .pn-text{min-width:0;}
.post-nav-item .pn-label{font-size:12.5px;color:var(--muted);letter-spacing:.02em;}
.post-nav-item .pn-title{
  font-size:15px;font-weight:600;color:var(--ink-900);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.post-nav-item:hover .pn-title{color:var(--brand-1);}

/* ============ 相关推荐 ============ */
.section{padding:56px 0;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.01em;}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(122,77,255,.4);}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--tint);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.05);}
.rel-thumb .chip{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);}
.rel-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:17px;line-height:1.5;}
.rel-body p{font-size:14px;color:var(--muted);line-height:1.75;}
.rel-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand-2);
}
.rel-link i{transition:transform var(--ease);}
.rel-card:hover .rel-link i{transform:translateX(4px);}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  padding:52px;
  background:var(--ink-900);
  background-image:radial-gradient(circle at 88% 12%,rgba(122,77,255,.5),transparent 58%),radial-gradient(circle at 6% 96%,rgba(255,106,61,.28),transparent 52%);
  border:1px solid rgba(255,255,255,.1);
  display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);line-height:1.32;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:14px;max-width:52ch;}
.cta-actions{display:flex;flex-direction:column;gap:14px;}
.cta-actions .btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.24);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:56px;background:var(--ink-900);color:#fff;
  border-top:3px solid transparent;
  border-image:linear-gradient(90deg,#7A4DFF,#FF6A3D) 1;
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.footer-desc{color:rgba(255,255,255,.62);font-size:14px;line-height:1.85;max-width:34ch;}
.footer-col h5{
  color:#fff;font-size:14px;font-weight:600;letter-spacing:.04em;
  margin-bottom:18px;display:flex;align-items:center;gap:8px;
}
.footer-col h5::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--brand-2);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:rgba(255,255,255,.66);font-size:14px;display:inline-block;transition:color var(--ease),transform var(--ease);}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.66);font-size:14px;line-height:1.7;}
.footer-contact i{color:var(--brand-2);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.46);
}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .site-header{padding-top:16px;}
  .nav-links{
    position:absolute;left:0;right:0;top:calc(100% + 12px);
    flex-direction:column;align-items:stretch;gap:6px;
    background:var(--ink-900);border-radius:var(--r-lg);
    padding:12px;box-shadow:0 24px 60px rgba(23,20,37,.4);
    display:none;z-index:80;
  }
  .nav-links.open{display:flex;}
  .nav-links .nav-item{
    color:rgba(255,255,255,.82);padding:14px 16px;border-radius:var(--r-sm);
    background:rgba(255,255,255,.04);font-size:15px;
  }
  .nav-links .nav-item i{color:var(--brand-2);}
  .nav-links .nav-item:hover,.nav-links .nav-item.active{
    background:rgba(122,77,255,.24);color:#fff;
  }
  .nav-links .nav-item.active::after{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-cta{display:none;}
  .layout{grid-template-columns:1fr;gap:28px;}
  .sidebar{position:static;}
  .article-card{padding:32px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:40px;}
}
@media screen and (max-width:768px){
  .container{padding:0 18px;}
  .brand-main{font-size:17px;}
  .article-head{padding:18px 0 32px;}
  .article-head h1{font-size:26px;}
  .article-card{padding:24px;border-radius:var(--r-lg);}
  .article-body{max-width:100%;}
  .article-body p{font-size:15.5px;}
  .post-nav{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .section{padding:40px 0;}
  .cta-band{padding:32px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .breadcrumb .current{max-width:40ch;}
}
@media screen and (max-width:520px){
  .site-header{padding-top:12px;}
  .nav-card{padding:10px 12px;border-radius:18px;gap:12px;}
  .brand-mark{width:38px;height:38px;border-radius:12px;font-size:15px;}
  .article-head h1{font-size:23px;}
  .article-card{padding:20px;}
  .side-card{padding:20px;}
  .toc-item{white-space:normal;}
}

/* roulang page: category1 */
:root{
  --brand-1:#7A4DFF;
  --brand-2:#FF6A3D;
  --grad-brand:linear-gradient(115deg,#7A4DFF 0%,#FF6A3D 100%);
  --lime:#C8F25C;
  --ink-900:#171425;
  --ink-700:#2A2637;
  --body:#1F1D28;
  --muted:#5C586B;
  --line:#E8E3DA;
  --surface:#FFFFFF;
  --surface-2:#F8F6F2;
  --purple-soft:rgba(122,77,255,.08);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --r-xs:12px;
  --shadow:0 2px 6px rgba(23,20,37,.04),0 12px 32px rgba(23,20,37,.08);
  --shadow-hover:0 20px 48px rgba(122,77,255,.16);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-top:16px;
  font-family:'PingFang SC','Noto Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--surface-2);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-1);text-decoration:none;transition:color var(--ease),background var(--ease),transform var(--ease);}
a:hover{color:var(--brand-2);}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4,h5{margin:0;color:var(--body);font-weight:700;letter-spacing:-.01em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:3px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,3vw,38px);
  line-height:1.28;
  margin-bottom:14px;
}
.section-head p{
  font-size:17px;
  color:var(--muted);
  max-width:640px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--brand-1);
  background:var(--purple-soft);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:18px;
  font-weight:600;
}
.eyebrow::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(200,242,92,.25);
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:12px;
  z-index:80;
}
.nav-card{
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:12px 16px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--body);
}
.brand:hover{color:var(--body);}
.brand-mark{
  width:40px;height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:var(--grad-brand);
  color:#fff;
  font-size:17px;
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:17px;font-weight:800;letter-spacing:-.02em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.14em;font-weight:500;}
.nav-links{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
}
.nav-item{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  padding:9px 13px;
  border-radius:var(--r-sm);
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.nav-item i{font-size:13px;color:var(--brand-1);opacity:.85;transition:color var(--ease);}
.nav-item:hover{
  background:var(--purple-soft);
  color:var(--brand-1);
  transform:translateY(-1px);
}
.nav-item.active{
  background:rgba(122,77,255,.10);
  color:var(--brand-1);
  font-weight:700;
}
.nav-item.active::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:4px;
  height:3px;
  border-radius:999px;
  background:var(--grad-brand);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  font-size:15px;
  font-weight:600;
  padding:14px 26px;
  border-radius:999px;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn i{font-size:13px;transition:transform var(--ease);}
.btn-primary{
  background:var(--grad-brand);
  background-size:160% 160%;
  background-position:0% 50%;
  color:#fff;
  box-shadow:0 8px 22px rgba(122,77,255,.26);
}
.btn-primary:hover{
  color:#fff;
  background-position:100% 50%;
  transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(122,77,255,.34);
}
.btn-primary:hover i{transform:translateX(3px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--surface);
  color:var(--body);
  border-color:var(--line);
}
.btn-ghost:hover{
  background:var(--purple-soft);
  color:var(--brand-1);
  border-color:rgba(122,77,255,.45);
  transform:translateY(-2px);
}
.btn-light{
  background:rgba(255,255,255,.14);
  color:#fff;
  border-color:rgba(255,255,255,.42);
  backdrop-filter:blur(6px);
}
.btn-light:hover{
  background:rgba(255,255,255,.95);
  color:var(--ink-900);
  border-color:#fff;
  transform:translateY(-2px);
}
.btn-sm{padding:11px 20px;font-size:14px;}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--body);
  font-size:16px;
  margin-left:auto;
}
.nav-toggle:hover{background:var(--purple-soft);color:var(--brand-1);}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0;}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--muted);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-1);}
.crumb i{font-size:10px;opacity:.5;}
.crumb .current{color:var(--brand-1);font-weight:600;}

/* ---------- 首屏横幅 ---------- */
.page-hero{
  position:relative;
  margin-top:22px;
  border-radius:28px;
  overflow:hidden;
  min-height:440px;
  display:flex;
  align-items:center;
  background:#1b1730 url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  box-shadow:var(--shadow);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(104deg,rgba(23,20,37,.94) 0%,rgba(23,20,37,.82) 46%,rgba(122,77,255,.42) 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-90px;bottom:-120px;
  width:360px;height:360px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,61,.34),transparent 68%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:54px 48px;
  max-width:760px;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:7px 16px;
  border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  color:#fff;
  font-size:13px;
  letter-spacing:.04em;
  margin-bottom:20px;
}
.hero-badge::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(200,242,92,.24);
}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.16;
  letter-spacing:-.02em;
  margin-bottom:18px;
  max-width:16em;
}
.page-hero h1 .hl{
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  padding-right:2px;
}
.hero-lead{
  color:rgba(255,255,255,.86);
  font-size:18px;
  line-height:1.8;
  margin-bottom:28px;
  max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.hero-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border-radius:var(--r-sm);
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.20);
  color:rgba(255,255,255,.92);
  font-size:13.5px;
}
.hero-chip i{color:var(--lime);font-size:12px;}

/* ---------- 通用卡片 ---------- */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow);
  padding:30px;
}
.card-grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.media-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.media-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(122,77,255,.35);
}
.media-figure{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:rgba(122,77,255,.08);
}
.media-figure img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 420ms ease;
}
.media-card:hover .media-figure img{transform:scale(1.045);}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
  background:var(--purple-soft);
  color:var(--brand-1);
}
.tag-float{
  position:absolute;
  left:14px;top:14px;
  background:rgba(255,255,255,.94);
  box-shadow:0 4px 14px rgba(23,20,37,.12);
}
.tag-orange{background:rgba(255,106,61,.12);color:#D2451C;}
.media-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.media-body h3{font-size:19px;line-height:1.5;font-weight:700;}
.media-body p{font-size:15px;color:var(--muted);line-height:1.8;margin:0;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-2);
  margin-top:auto;
}
.link-arrow i{transition:transform var(--ease);font-size:12px;}
.link-arrow:hover{color:var(--brand-2);}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 要点列表 ---------- */
.check-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:36px;
}
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px 32px;
  margin-top:26px;
}
.check-item{
  display:flex;
  gap:14px;
  padding:14px 16px;
  border-radius:var(--r-sm);
  background:var(--surface-2);
  border:1px solid transparent;
  transition:border-color var(--ease),background var(--ease),transform var(--ease);
}
.check-item:hover{
  background:#fff;
  border-color:rgba(122,77,255,.30);
  transform:translateY(-2px);
}
.check-num{
  flex-shrink:0;
  width:26px;height:26px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(122,77,255,.12);
  color:var(--brand-1);
  font-size:13px;
  font-weight:700;
  margin-top:2px;
}
.check-item h4{font-size:16px;font-weight:700;margin-bottom:4px;line-height:1.5;}
.check-item p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.75;}

/* ---------- 步骤流程 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:step;
}
.step-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:28px 24px;
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(122,77,255,.35);
}
.step-num{
  font-size:14px;
  font-weight:800;
  letter-spacing:.14em;
  color:var(--brand-2);
  margin-bottom:14px;
  display:block;
}
.step-card h3{font-size:18px;margin-bottom:10px;line-height:1.5;}
.step-card p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.8;}

/* ---------- 深色数据区 ---------- */
.dark-band{
  position:relative;
  background:var(--ink-900);
  border-radius:var(--r-lg);
  padding:56px 44px;
  overflow:hidden;
  color:#fff;
}
.dark-band::before{
  content:"";
  position:absolute;
  right:-120px;top:-160px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(122,77,255,.42),transparent 66%);
}
.dark-band .band-head{position:relative;z-index:2;max-width:620px;margin-bottom:34px;}
.dark-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);margin-bottom:12px;}
.dark-band p{color:rgba(255,255,255,.72);font-size:16px;margin:0;}
.stat-row{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
}
.stat-item{
  padding:8px 24px;
  border-left:1px solid rgba(255,255,255,.10);
}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-size:clamp(34px,4vw,50px);
  font-weight:800;
  line-height:1.1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:#fff;
  display:flex;
  align-items:baseline;
  gap:6px;
}
.stat-num .unit{font-size:14px;font-weight:600;color:var(--lime);letter-spacing:0;}
.stat-label{font-size:13.5px;color:rgba(255,255,255,.62);margin-top:10px;line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:1.55fr .85fr;
  gap:32px;
  align-items:start;
}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:0 2px 6px rgba(23,20,37,.04);
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{
  border-color:rgba(122,77,255,.45);
  box-shadow:0 12px 30px rgba(122,77,255,.10);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 20px;
  font-size:16.5px;
  font-weight:600;
  color:var(--body);
  outline:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  width:3px;
  align-self:stretch;
  min-height:22px;
  border-radius:999px;
  background:var(--grad-brand);
  flex-shrink:0;
}
.faq-item summary .plus{
  margin-left:auto;
  width:28px;height:28px;
  border-radius:50%;
  background:var(--surface-2);
  color:var(--brand-1);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  flex-shrink:0;
  transition:transform var(--ease),background var(--ease),color var(--ease);
}
.faq-item[open] summary .plus{
  background:var(--brand-1);
  color:#fff;
  transform:rotate(45deg);
}
.faq-answer{
  padding:0 20px 20px 40px;
  font-size:15px;
  color:var(--muted);
  line-height:1.85;
}
.faq-answer p{margin:0 0 10px;}
.faq-answer p:last-child{margin:0;}
.help-card{
  background:var(--ink-900);
  border-radius:var(--r-md);
  padding:32px 28px;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.help-card::before{
  content:"";
  position:absolute;
  right:-70px;top:-70px;
  width:200px;height:200px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,61,.34),transparent 68%);
}
.help-card h3{color:#fff;font-size:20px;margin-bottom:12px;position:relative;}
.help-card p{color:rgba(255,255,255,.74);font-size:14.5px;margin-bottom:22px;position:relative;}
.help-card .btn{width:100%;position:relative;}
.help-list{margin-top:22px;display:flex;flex-direction:column;gap:10px;position:relative;}
.help-list li{
  display:flex;
  gap:10px;
  font-size:13.5px;
  color:rgba(255,255,255,.78);
  align-items:flex-start;
}
.help-list i{color:var(--lime);font-size:12px;margin-top:6px;}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;
  border-radius:var(--r-lg);
  padding:52px 48px;
  background:var(--surface);
  border:2px solid transparent;
  background-image:linear-gradient(var(--surface),var(--surface)),var(--grad-brand);
  background-origin:border-box;
  background-clip:padding-box,border-box;
  box-shadow:var(--shadow);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-card h2{font-size:clamp(22px,2.8vw,32px);margin-bottom:12px;line-height:1.3;}
.cta-card p{color:var(--muted);font-size:16px;max-width:44em;margin:0;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:var(--ink-900);
  border-top:3px solid transparent;
  border-image:var(--grad-brand) 1;
  color:#fff;
  padding:60px 0 26px;
  position:relative;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand-main{color:#fff;font-size:17px;font-weight:800;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);font-size:11px;letter-spacing:.14em;}
.footer-desc{color:rgba(255,255,255,.62);font-size:14px;line-height:1.85;margin:0;max-width:26em;}
.footer-col h5{
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  margin-bottom:18px;
  display:flex;
  align-items:center;
  gap:8px;
}
.footer-col h5::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand-2);
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  color:rgba(255,255,255,.66);
  font-size:14px;
  display:inline-block;
  transition:color var(--ease),transform var(--ease);
}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  color:rgba(255,255,255,.66);
  font-size:14px;
  line-height:1.7;
}
.footer-contact i{color:var(--brand-1);margin-top:5px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding-top:22px;
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  color:rgba(255,255,255,.48);
  font-size:13px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{
    position:fixed;
    left:16px;right:16px;
    top:86px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    background:var(--ink-900);
    border-radius:var(--r-lg);
    padding:16px;
    box-shadow:0 24px 60px rgba(23,20,37,.4);
    z-index:90;
    max-height:calc(100vh - 120px);
    overflow-y:auto;
    margin-left:0;
  }
  .nav-links.open{display:flex;}
  .nav-links .nav-item{
    color:rgba(255,255,255,.82);
    background:rgba(255,255,255,.06);
    border-radius:var(--r-sm);
    padding:13px 16px;
    justify-content:space-between;
    font-size:15px;
  }
  .nav-links .nav-item i:first-child{color:var(--lime);margin-right:2px;}
  .nav-links .nav-item::after{
    content:"\f054";
    font-family:"Font Awesome 6 Free";
    font-weight:900;
    font-size:11px;
    color:var(--brand-2);
    position:static;
    height:auto;
    background:none;
    left:auto;right:auto;bottom:auto;
  }
  .nav-links .nav-item.active{
    background:rgba(122,77,255,.22);
    color:#fff;
  }
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-cta{display:none;}
  .card-grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .stat-row{grid-template-columns:repeat(2,1fr);row-gap:28px;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .faq-layout{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
  .hero-inner{padding:44px 32px;}
  .dark-band{padding:44px 30px;}
  .cta-card{padding:40px 30px;}
}
@media (max-width:767px){
  .card-grid-3{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;gap:12px;}
  .check-panel{padding:24px 20px;}
  .hero-actions .btn{width:100%;}
  .hero-actions{gap:12px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  body{padding-top:10px;}
  .container{padding:0 16px;}
  .site-header{top:8px;}
  .nav-card{padding:10px 12px;gap:10px;}
  .brand-main{font-size:15.5px;}
  .page-hero{min-height:auto;border-radius:22px;}
  .hero-inner{padding:36px 22px;}
  .hero-lead{font-size:16px;}
  .hero-chip{font-size:12.5px;padding:8px 12px;}
  .section{padding:52px 0;}
  .dark-band{padding:34px 22px;border-radius:20px;}
  .stat-row{grid-template-columns:1fr;row-gap:22px;}
  .stat-item{border-left:0;padding:0 0 0 14px;border-left:2px solid rgba(255,255,255,.12);}
  .stat-item:first-child{padding-left:14px;}
  .stat-item:nth-child(3){padding-left:14px;}
  .faq-item summary{font-size:15.5px;padding:16px;}
  .faq-answer{padding:0 16px 18px 34px;}
  .cta-card{padding:30px 22px;border-radius:20px;}
  .card{padding:22px;}
  .media-body{padding:20px;}
}

/* roulang page: category3 */
:root{
  --brand-1:#7A4DFF;
  --brand-2:#FF6A3D;
  --lime:#C8F25C;
  --grad-brand:linear-gradient(115deg,#7A4DFF 0%,#FF6A3D 100%);
  --ink-900:#171425;
  --ink-700:#2A2637;
  --body:#1F1D28;
  --muted:#5C586B;
  --line:#E8E3DA;
  --surface:#FFFFFF;
  --surface-2:#F8F6F2;
  --radius-lg:24px;
  --radius-md:20px;
  --radius-sm:14px;
  --radius-xs:12px;
  --shadow-soft:0 2px 6px rgba(23,20,37,.04),0 12px 32px rgba(23,20,37,.08);
  --shadow-hover:0 20px 48px rgba(122,77,255,.16);
  --ease:200ms ease;
  --font-cn:'PingFang SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--surface-2);
  font-variant-numeric:tabular-nums;
}
a{color:var(--brand-1);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease);}
a:hover{color:var(--brand-2);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--body);font-weight:700;letter-spacing:-0.01em;}
p{margin:0 0 18px;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;box-shadow:0 0 0 4px rgba(122,77,255,.18);border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}

/* ============ 导航 ============ */
.site-header{padding:18px 0 0;position:relative;z-index:60;}
.nav-card{
  display:flex;align-items:center;gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-soft);
  padding:12px 16px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:14px;
  background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:18px;
  box-shadow:0 8px 20px rgba(122,77,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:19px;font-weight:800;color:var(--body);letter-spacing:-0.02em;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.14em;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:nowrap;}
.nav-item{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 12px;border-radius:var(--radius-sm);
  font-size:14px;color:var(--muted);font-weight:500;
  border:1px solid transparent;white-space:nowrap;
}
.nav-item i{font-size:13px;color:var(--brand-1);opacity:.75;transition:opacity var(--ease);}
.nav-item:hover{background:rgba(122,77,255,.08);color:var(--brand-1);transform:translateY(-1px);}
.nav-item:hover i{opacity:1;}
.nav-item.active{
  background:rgba(122,77,255,.10);color:var(--brand-1);font-weight:700;
  border-color:rgba(122,77,255,.18);
  position:relative;
}
.nav-item.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:3px;
  border-radius:999px;background:var(--grad-brand);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;padding:13px 26px;
  cursor:pointer;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  background:var(--grad-brand);color:#fff;
  box-shadow:0 10px 26px rgba(122,77,255,.28);
  background-size:160% 160%;background-position:0% 50%;
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);background-position:100% 50%;box-shadow:0 16px 34px rgba(255,106,61,.30);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--surface);color:var(--body);border-color:var(--line);
}
.btn-ghost:hover{background:rgba(122,77,255,.06);border-color:var(--brand-1);color:var(--brand-1);transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);background:var(--surface);color:var(--body);
  font-size:18px;cursor:pointer;flex-shrink:0;
}
.nav-toggle:hover{border-color:var(--brand-1);color:var(--brand-1);}

/* ============ 通用板块 ============ */
.section{padding:84px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(122,77,255,.08);
  color:var(--brand-1);font-size:13px;font-weight:700;letter-spacing:.04em;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(200,242,92,.28);}
h2.section-title{font-size:clamp(24px,3vw,36px);line-height:1.28;margin-bottom:14px;}
.section-sub{color:var(--muted);font-size:17px;line-height:1.8;margin:0;}
.grad-text{
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ============ 面包屑 ============ */
.breadcrumb-bar{padding:22px 0 0;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:9px 18px;box-shadow:var(--shadow-soft);width:fit-content;max-width:100%;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand-1);}
.breadcrumb .sep{color:#BCB6A9;}
.breadcrumb .current{color:var(--body);font-weight:600;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 分类首屏 ============ */
.cat-hero{padding:32px 0 30px;}
.cat-hero-card{
  position:relative;overflow:hidden;
  border-radius:28px;border:1px solid var(--line);
  background:var(--ink-900);
  box-shadow:var(--shadow-soft);
  padding:60px 56px;
  color:#fff;
}
.cat-hero-card::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.42;
}
.cat-hero-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(23,20,37,.94) 0%,rgba(23,20,37,.78) 48%,rgba(122,77,255,.34) 100%);
}
.cat-hero-inner{position:relative;z-index:2;max-width:700px;}
.cat-hero .eyebrow{background:rgba(255,255,255,.12);color:#fff;}
.cat-hero h1{
  color:#fff;
  font-size:clamp(28px,4vw,48px);
  line-height:1.18;letter-spacing:-0.02em;
  margin-bottom:18px;
}
.cat-hero h1 .hl{
  display:inline-block;position:relative;padding:0 4px;
  background:var(--grad-brand);border-radius:10px;
  color:#fff;
}
.cat-hero-lead{color:rgba(255,255,255,.82);font-size:17px;line-height:1.8;margin-bottom:26px;max-width:600px;}
.cat-hero-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cat-hero .btn-ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.28);color:#fff;}
.cat-hero .btn-ghost:hover{background:rgba(255,255,255,.18);color:#fff;border-color:#fff;}
.hero-facts{
  position:relative;z-index:2;
  display:flex;gap:28px;flex-wrap:wrap;margin-top:34px;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-fact{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.80);}
.hero-fact i{color:var(--lime);font-size:13px;}

/* ============ 图文交替行 ============ */
.rep-stack{display:flex;flex-direction:column;gap:28px;}
.rep-row{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-soft);
  padding:38px;
  display:flex;align-items:center;gap:44px;
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.rep-row:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:rgba(122,77,255,.28);}
.rep-text{flex:1 1 52%;min-width:0;}
.rep-media{flex:1 1 48%;min-width:0;}
.rep-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:18px;border:1px solid var(--line);
  box-shadow:0 12px 30px rgba(23,20,37,.10);
}
.rep-row.rev{flex-direction:row-reverse;}
.rep-step{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:700;color:var(--brand-1);
  background:rgba(122,77,255,.08);
  padding:5px 13px;border-radius:999px;margin-bottom:14px;letter-spacing:.04em;
}
.rep-step span{
  width:22px;height:22px;border-radius:50%;
  background:var(--grad-brand);color:#fff;font-size:12px;
  display:inline-flex;align-items:center;justify-content:center;
}
.rep-text h3{font-size:clamp(20px,2vw,24px);line-height:1.35;margin-bottom:12px;}
.rep-text p{color:var(--muted);font-size:15.5px;margin-bottom:16px;}
.rep-points{display:flex;flex-direction:column;gap:10px;}
.rep-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--body);
}
.rep-points li i{color:var(--brand-2);font-size:13px;margin-top:7px;flex-shrink:0;}

/* ============ 要点 / 提示条 ============ */
.notice-strip{
  display:flex;align-items:flex-start;gap:14px;
  background:rgba(122,77,255,.06);
  border:1px solid rgba(122,77,255,.18);
  border-left:4px solid var(--brand-1);
  border-radius:16px;
  padding:20px 24px;
  font-size:15px;color:var(--body);
}
.notice-strip i{color:var(--brand-1);font-size:18px;margin-top:3px;}
.notice-strip strong{color:var(--ink-900);}

/* ============ 数据条 ============ */
.stat-band{
  background:var(--ink-900);
  border-radius:var(--radius-lg);
  padding:44px 40px;
  position:relative;overflow:hidden;
  color:#fff;
}
.stat-band::before{
  content:"";position:absolute;right:-80px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(122,77,255,.45) 0%,rgba(122,77,255,0) 68%);
}
.stat-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.stat-item{padding:0 26px;border-left:1px solid rgba(255,255,255,.10);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{font-size:clamp(32px,3.4vw,46px);font-weight:800;line-height:1.1;color:#fff;letter-spacing:-0.02em;}
.stat-num small{font-size:14px;font-weight:600;margin-left:4px;color:var(--lime);}
.stat-label{font-size:13.5px;color:rgba(255,255,255,.66);margin-top:8px;line-height:1.6;}

/* ============ FAQ ============ */
.faq-wrap{display:flex;gap:32px;align-items:flex-start;}
.faq-list{flex:1 1 66%;min-width:0;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item.open{border-color:rgba(122,77,255,.42);box-shadow:0 12px 30px rgba(122,77,255,.10);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  background:none;border:0;cursor:pointer;
  padding:18px 20px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--body);
}
.faq-q::before{
  content:"";width:3px;align-self:stretch;min-height:22px;border-radius:999px;
  background:var(--grad-brand);flex-shrink:0;
}
.faq-q span{flex:1;}
.faq-icon{
  width:30px;height:30px;border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-1);font-size:13px;flex-shrink:0;
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.faq-item.open .faq-icon{background:var(--grad-brand);color:#fff;border-color:transparent;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms ease;}
.faq-a-inner{padding:0 20px 20px 37px;font-size:15px;color:var(--muted);line-height:1.85;}
.faq-side{flex:1 1 34%;min-width:0;}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-soft);
  padding:28px;
}
.side-card h4{font-size:18px;margin-bottom:10px;}
.side-card p{font-size:14.5px;color:var(--muted);margin-bottom:18px;}
.side-list{display:flex;flex-direction:column;gap:12px;margin-bottom:20px;}
.side-list li{display:flex;gap:10px;font-size:14px;color:var(--body);align-items:flex-start;}
.side-list li i{color:var(--brand-1);font-size:13px;margin-top:6px;}

/* ============ CTA ============ */
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  padding:52px 48px;
  background:var(--surface);
  border:2px solid transparent;
  background-image:linear-gradient(var(--surface),var(--surface)),var(--grad-brand);
  background-origin:border-box;
  background-clip:padding-box,border-box;
  box-shadow:var(--shadow-soft);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-card h3{font-size:clamp(22px,2.6vw,30px);line-height:1.32;margin-bottom:10px;}
.cta-card p{color:var(--muted);font-size:15.5px;margin:0;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);color:rgba(255,255,255,.72);
  margin-top:20px;position:relative;
}
.site-footer::before{
  content:"";display:block;height:3px;
  background:var(--grad-brand);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.50);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;max-width:320px;}
.footer-col h5{
  color:#fff;font-size:14px;letter-spacing:.08em;margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.footer-col h5::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);display:inline-block;}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.66);align-items:flex-start;}
.footer-contact i{color:var(--brand-2);margin-top:6px;font-size:13px;flex-shrink:0;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* 移动端抽屉 */
.nav-drawer{
  display:none;position:fixed;inset:0;z-index:200;
}
.nav-drawer.open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(23,20,37,.55);backdrop-filter:blur(2px);}
.drawer-panel{
  position:absolute;right:0;top:0;bottom:0;width:min(340px,86vw);
  background:var(--ink-900);padding:24px 20px;overflow-y:auto;
  display:flex;flex-direction:column;gap:10px;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer-head .brand-main{color:#fff;}
.drawer-head .brand-sub{color:rgba(255,255,255,.5);}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid rgba(255,255,255,.18);background:none;color:#fff;font-size:16px;cursor:pointer;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px 16px;border-radius:14px;
  background:rgba(255,255,255,.05);color:rgba(255,255,255,.86);
  font-size:15px;
}
.drawer-link i:first-child{color:var(--brand-1);margin-right:8px;}
.drawer-link .arrow{color:var(--brand-2);}
.drawer-link:hover,.drawer-link.active{background:rgba(122,77,255,.22);color:#fff;}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-cta{margin-left:auto;}
  .section{padding:64px 0;}
  .cat-hero-card{padding:44px 36px;}
  .rep-row{gap:28px;padding:28px;flex-direction:column;}
  .rep-row.rev{flex-direction:column;}
  .rep-text,.rep-media{flex:1 1 100%;width:100%;}
  .stat-grid{grid-template-columns:repeat(2,1fr);row-gap:28px;}
  .stat-item{border-left:0;padding:0;}
  .stat-item:nth-child(even){border-left:1px solid rgba(255,255,255,.10);padding-left:24px;}
  .faq-wrap{flex-direction:column;}
  .faq-list,.faq-side{flex:1 1 100%;width:100%;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:38px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px;}
}
@media screen and (max-width:640px){
  .container{padding:0 16px;}
  .nav-card{padding:10px 12px;gap:10px;border-radius:20px;}
  .brand-mark{width:38px;height:38px;border-radius:12px;font-size:16px;}
  .brand-main{font-size:17px;}
  .brand-sub{font-size:11px;}
  .nav-cta{display:none;}
  .section{padding:52px 0;}
  .breadcrumb-bar{padding:16px 0 0;}
  .breadcrumb{font-size:12px;padding:8px 14px;}
  .breadcrumb .current{max-width:170px;}
  .cat-hero-card{padding:34px 22px;border-radius:22px;}
  .hero-facts{gap:16px;margin-top:26px;padding-top:20px;}
  .hero-fact{font-size:13px;}
  .cat-hero-actions .btn{width:100%;}
  .rep-row{padding:22px;border-radius:20px;}
  .rep-media img{aspect-ratio:16/10;}
  .stat-band{padding:32px 24px;border-radius:20px;}
  .stat-grid{grid-template-columns:1fr;row-gap:22px;}
  .stat-item:nth-child(even){border-left:0;padding-left:0;}
  .stat-item{padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.08);}
  .stat-item:last-child{padding-bottom:0;border-bottom:0;}
  .faq-q{font-size:15px;padding:15px 16px;}
  .faq-a-inner{padding:0 16px 16px 33px;font-size:14.5px;}
  .cta-card{padding:28px 22px;border-radius:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .side-card{padding:22px;}
}

/* roulang page: category2 */
:root{
  --brand-1:#7A4DFF;
  --brand-2:#FF6A3D;
  --grad-brand:linear-gradient(115deg,#7A4DFF 0%,#FF6A3D 100%);
  --lime:#C8F25C;
  --ink-900:#171425;
  --ink-700:#2A2637;
  --body:#1F1D28;
  --muted:#5C586B;
  --line:#E8E3DA;
  --surface:#FFFFFF;
  --surface-2:#F8F6F2;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --shadow-1:0 2px 6px rgba(23,20,37,.04),0 12px 32px rgba(23,20,37,.08);
  --shadow-2:0 20px 48px rgba(122,77,255,.16);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--surface-2);
  color:var(--body);
  font-family:'PingFang SC','Noto Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-1);text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease;}
a:hover{color:var(--brand-2);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;box-shadow:0 0 0 4px rgba(122,77,255,.18);}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.num{font-variant-numeric:tabular-nums;}

/* 顶部导航 */
.site-header{padding:20px 0 0;position:relative;z-index:60;}
.nav-card{
  display:flex;align-items:center;gap:14px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-1);
  padding:12px 16px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;box-shadow:0 6px 16px rgba(122,77,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:.02em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.14em;}
.nav-links{display:flex;align-items:center;gap:6px;flex:1;justify-content:center;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:6px;
  padding:9px 12px;border-radius:var(--r-sm);
  font-size:14px;color:var(--muted);font-weight:500;
  border:1px solid transparent;white-space:nowrap;
}
.nav-item i{font-size:13px;color:#9A94AA;transition:color .2s ease;}
.nav-item:hover{background:rgba(122,77,255,.08);color:var(--brand-1);transform:translateY(-1px);}
.nav-item:hover i{color:var(--brand-1);}
.nav-item.active{background:rgba(122,77,255,.10);color:var(--brand-1);font-weight:600;}
.nav-item.active i{color:var(--brand-1);}
.nav-item.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:3px;
  border-radius:999px;background:var(--grad-brand);
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:13px;
  background:var(--ink-900);color:#fff;border:none;font-size:16px;
  align-items:center;justify-content:center;flex-shrink:0;
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:15px;
  padding:13px 26px;border:1px solid transparent;
  transition:all .22s ease;line-height:1.2;text-align:center;
}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 22px rgba(255,106,61,.26);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(122,77,255,.34);background:linear-gradient(135deg,#FF6A3D 0%,#7A4DFF 100%);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--ink-900);border-color:var(--line);}
.btn-ghost:hover{color:var(--brand-1);border-color:var(--brand-1);background:rgba(122,77,255,.06);transform:translateY(-2px);}
.nav-cta{flex-shrink:0;}

/* 首屏 */
.hero-wrap{padding:26px 0 0;}
.hero{
  position:relative;border-radius:28px;overflow:hidden;
  background-color:var(--ink-900);
  background-image:linear-gradient(100deg,rgba(23,20,37,.94) 0%,rgba(23,20,37,.80) 46%,rgba(23,20,37,.42) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:64px 56px;
}
.hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:44px;align-items:center;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 15px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.20);
  color:#fff;font-size:13px;letter-spacing:.04em;backdrop-filter:blur(4px);
}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(200,242,92,.18);}
.hero h1{
  margin-top:20px;color:#fff;
  font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.18;letter-spacing:-.02em;
}
.hero h1 .hl{
  display:inline-block;background:var(--grad-brand);
  padding:0 12px;border-radius:12px;color:#fff;
}
.hero-lead{margin-top:18px;color:rgba(255,255,255,.80);font-size:17px;max-width:520px;}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-trust{display:flex;gap:24px;margin-top:26px;flex-wrap:wrap;}
.hero-trust span{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,.72);font-size:13.5px;}
.hero-trust i{color:var(--lime);font-size:12px;}

/* 比分牌 */
.score-card{
  background:rgba(255,255,255,.97);border-radius:var(--r-lg);
  padding:22px;box-shadow:0 24px 56px rgba(0,0,0,.30);
  border:1px solid rgba(255,255,255,.65);
}
.score-top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.score-live{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--brand-2);letter-spacing:.06em;}
.score-live .blink{width:7px;height:7px;border-radius:50%;background:var(--brand-2);animation:blink 1.4s infinite;}
@keyframes blink{0%,100%{opacity:1;}50%{opacity:.25;}}
.score-time{font-size:12px;color:var(--muted);}
.score-main{display:flex;align-items:center;justify-content:space-between;margin-top:16px;gap:8px;}
.side{text-align:center;flex:1;}
.side .name{font-size:13px;color:var(--muted);}
.side .val{font-size:34px;font-weight:800;color:var(--ink-900);line-height:1.1;font-variant-numeric:tabular-nums;}
.score-mid{font-size:12px;color:#A9A3B6;letter-spacing:.16em;padding-top:16px;}
.score-bar{margin-top:18px;height:6px;border-radius:999px;background:#EFEBF7;overflow:hidden;}
.score-bar i{display:block;height:100%;width:64%;border-radius:999px;background:var(--grad-brand);}
.score-note{margin-top:10px;font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;}

/* 延续带 */
.strip{padding:24px 0 0;}
.strip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.strip-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;display:flex;gap:14px;align-items:flex-start;
  box-shadow:var(--shadow-1);transition:all .22s ease;
}
.strip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(122,77,255,.35);}
.icon-box{
  width:44px;height:44px;border-radius:13px;flex-shrink:0;
  background:rgba(122,77,255,.10);color:var(--brand-1);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.strip-card h3{font-size:16px;font-weight:700;color:var(--ink-900);}
.strip-card p{font-size:13.5px;color:var(--muted);line-height:1.7;margin-top:4px;}

/* 面包屑 */
.crumb{padding:26px 0 0;font-size:13.5px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-1);}
.crumb .sep{margin:0 8px;color:#C3BDD0;}
.crumb .cur{color:var(--brand-1);font-weight:600;}

/* 主内容 */
.section{padding:64px 0 0;}
.section-head{max-width:660px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-1);letter-spacing:.10em;}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:999px;background:var(--grad-brand);}
.section-head h2{margin-top:12px;font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3;color:var(--ink-900);}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px;}

.layout{display:grid;grid-template-columns:330px 1fr;gap:32px;margin-top:40px;align-items:start;}
.toc{
  position:sticky;top:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-1);
}
.toc h4{font-size:13px;letter-spacing:.12em;color:var(--muted);font-weight:700;}
.toc-list{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.toc-list a{
  display:flex;align-items:center;gap:10px;
  padding:11px 14px;border-radius:var(--r-sm);
  font-size:14px;color:var(--muted);background:var(--surface-2);
  border:1px solid transparent;transition:all .2s ease;
}
.toc-list a .idx{
  width:22px;height:22px;border-radius:50%;background:rgba(122,77,255,.12);
  color:var(--brand-1);font-size:11px;font-weight:700;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.toc-list a:hover{background:rgba(122,77,255,.08);color:var(--brand-1);border-color:rgba(122,77,255,.22);}
.toc-list a.current{background:rgba(122,77,255,.12);color:var(--brand-1);font-weight:600;border-color:rgba(122,77,255,.30);}
.toc-tip{
  margin-top:18px;padding:16px;border-radius:var(--r-sm);
  background:var(--ink-900);color:#fff;
}
.toc-tip p{font-size:13px;color:rgba(255,255,255,.72);line-height:1.7;}
.toc-tip a{margin-top:10px;display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--lime);font-weight:600;}
.toc-tip a:hover{color:#fff;}

.panels{display:flex;flex-direction:column;gap:24px;}
.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:32px;box-shadow:var(--shadow-1);transition:all .24s ease;
  scroll-margin-top:24px;
}
.panel:hover{border-color:rgba(122,77,255,.30);box-shadow:0 16px 40px rgba(122,77,255,.10);}
.panel-head{display:flex;align-items:center;gap:14px;}
.panel-head .icon-box{width:48px;height:48px;border-radius:14px;font-size:19px;}
.panel-head h3{font-size:clamp(19px,2vw,23px);font-weight:700;color:var(--ink-900);line-height:1.35;}
.panel p{margin-top:16px;font-size:15.5px;color:#413C50;line-height:1.85;}
.panel-img{
  margin-top:20px;border-radius:16px;overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/7;background:rgba(122,77,255,.06);
}
.panel-img img{width:100%;height:100%;object-fit:cover;}
.divider{height:1px;background:var(--line);margin:24px 0 0;}
.points{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:#413C50;}
.points .idx{
  width:24px;height:24px;border-radius:50%;flex-shrink:0;
  background:rgba(122,77,255,.12);color:var(--brand-1);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
  margin-top:3px;
}

/* 场景 / 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--shadow-1);position:relative;
  transition:all .24s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(122,77,255,.32);}
.step .no{
  width:34px;height:34px;border-radius:11px;background:var(--grad-brand);
  color:#fff;font-weight:800;font-size:14px;
  display:flex;align-items:center;justify-content:center;
}
.step h4{margin-top:16px;font-size:17px;font-weight:700;color:var(--ink-900);}
.step p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75;}

/* 数据区 */
.stats{
  margin-top:64px;background:var(--ink-900);border-radius:28px;
  padding:56px 48px;position:relative;overflow:hidden;
}
.stats::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(122,77,255,.42) 0%,rgba(122,77,255,0) 68%);
  pointer-events:none;
}
.stats h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:700;position:relative;z-index:2;}
.stats-sub{margin-top:10px;color:rgba(255,255,255,.66);font-size:15px;position:relative;z-index:2;}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:36px;position:relative;z-index:2;
}
.stat{padding:0 24px;border-left:1px solid rgba(255,255,255,.10);}
.stat:first-child{border-left:none;padding-left:0;}
.stat .val{font-size:clamp(32px,3.6vw,46px);font-weight:800;color:#fff;line-height:1.1;font-variant-numeric:tabular-nums;}
.stat .val small{font-size:14px;font-weight:600;color:var(--lime);margin-left:4px;}
.stat .label{margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.62);}
.stat .bar{margin-top:14px;height:5px;border-radius:999px;background:rgba(255,255,255,.12);overflow:hidden;}
.stat .bar i{display:block;height:100%;border-radius:999px;background:var(--grad-brand);}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:1.6fr 1fr;gap:32px;margin-top:40px;align-items:start;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  overflow:hidden;transition:all .22s ease;
}
.faq-item.open{border-color:var(--brand-1);box-shadow:0 12px 30px rgba(122,77,255,.12);}
.faq-q{
  display:flex;align-items:center;gap:14px;width:100%;
  background:none;border:none;text-align:left;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background .2s ease;
}
.faq-q:hover{background:rgba(122,77,255,.05);}
.faq-q .bar{width:3px;height:20px;border-radius:999px;background:var(--grad-brand);flex-shrink:0;}
.faq-q span{flex:1;}
.faq-q .sign{
  width:26px;height:26px;border-radius:50%;flex-shrink:0;
  background:rgba(122,77,255,.10);color:var(--brand-1);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .24s ease,background .2s ease;
}
.faq-item.open .faq-q .sign{background:var(--brand-1);color:#fff;transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 22px 22px 39px;font-size:15px;color:#413C50;line-height:1.85;}
.faq-side{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-1);position:sticky;top:24px;
}
.faq-side .icon-box{width:48px;height:48px;border-radius:14px;font-size:19px;}
.faq-side h3{margin-top:16px;font-size:19px;font-weight:700;color:var(--ink-900);}
.faq-side p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.8;}
.faq-side .btn{margin-top:20px;width:100%;}
.faq-side ul{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.faq-side ul li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);}
.faq-side ul li i{color:var(--brand-2);font-size:12px;}

/* CTA */
.cta-wrap{padding:64px 0 96px;}
.cta{
  position:relative;border-radius:28px;padding:56px 48px;
  background:var(--ink-900);overflow:hidden;
  border:1px solid rgba(255,255,255,.10);
}
.cta::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(122,77,255,.28) 0%,rgba(255,106,61,.16) 60%,rgba(23,20,37,0) 100%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr .9fr;gap:40px;align-items:center;}
.cta h2{color:#fff;font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;}
.cta p{margin-top:14px;color:rgba(255,255,255,.72);font-size:16px;max-width:520px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;}
.cta-actions .btn{width:100%;}
.cta-meta{display:flex;gap:22px;margin-top:22px;flex-wrap:wrap;}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.66);}
.cta-meta i{color:var(--lime);font-size:12px;}

/* 页脚 */
.site-footer{background:var(--ink-900);color:#fff;border-top:3px solid transparent;border-image:var(--grad-brand) 1;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.footer-desc{margin-top:16px;font-size:14px;color:rgba(255,255,255,.62);line-height:1.85;max-width:300px;}
.footer-col h5{font-size:14px;font-weight:700;color:#fff;display:flex;align-items:center;gap:8px;letter-spacing:.04em;}
.footer-col h5::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);}
.footer-col ul{margin-top:16px;display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);display:inline-block;transition:all .2s ease;}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.66);}
.footer-contact i{color:var(--brand-2);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* 遮罩 */
.nav-mask{
  display:none;position:fixed;inset:0;background:rgba(23,20,37,.55);
  z-index:70;backdrop-filter:blur(2px);
}
body.nav-open .nav-mask{display:block;}

@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  body.nav-open .nav-links{
    display:flex;flex-direction:column;align-items:stretch;gap:8px;
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    background:var(--ink-900);padding:88px 20px 28px;
    z-index:80;overflow-y:auto;justify-content:flex-start;
  }
  body.nav-open .nav-item{
    background:rgba(255,255,255,.06);color:#fff;
    padding:15px 16px;font-size:15px;border-radius:var(--r-sm);
    justify-content:space-between;
  }
  body.nav-open .nav-item i{color:var(--brand-2);order:2;}
  body.nav-open .nav-item.active{background:rgba(122,77,255,.30);color:#fff;}
  body.nav-open .nav-item.active::after{display:none;}
  body.nav-open{overflow:hidden;}
  .hero{padding:48px 36px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .layout{grid-template-columns:1fr;}
  .toc{position:static;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .stats{padding:44px 32px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);row-gap:32px;}
  .stat:nth-child(3){border-left:none;padding-left:0;}
  .faq-layout{grid-template-columns:1fr;}
  .faq-side{position:static;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .cta{padding:44px 32px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:768px){
  .nav-card{padding:10px 12px;gap:10px;}
  .brand-main{font-size:16px;}
  .nav-cta{display:none;}
  .strip-grid{grid-template-columns:1fr;}
  .hero{padding:40px 24px;border-radius:22px;}
  .hero-lead{font-size:16px;}
  .hero h1{font-size:clamp(27px,7vw,36px);}
  .hero-actions .btn{flex:1;min-width:140px;}
  .panel{padding:24px;}
  .steps{grid-template-columns:1fr;}
  .stats{padding:36px 24px;border-radius:22px;}
  .stats-grid{grid-template-columns:1fr;row-gap:28px;}
  .stat{border-left:none;padding-left:0;border-top:1px solid rgba(255,255,255,.10);padding-top:22px;}
  .stat:first-child{border-top:none;padding-top:0;}
  .cta{border-radius:22px;padding:36px 24px;}
  .cta-actions{flex-direction:column;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:48px 0 0;}
  .cta-wrap{padding:48px 0 64px;}
  .container{padding:0 18px;}
}
@media (max-width:520px){
  .hero-trust{gap:14px;}
  .hero-trust span{font-size:12.5px;}
  .score-card{padding:18px;}
  .side .val{font-size:28px;}
  .strip-card{padding:18px;}
  .faq-q{padding:16px 16px;font-size:15px;}
  .faq-a p{padding:0 16px 18px 33px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category4 */
:root{
  --brand-1:#7A4DFF;
  --brand-2:#FF6A3D;
  --grad-brand:linear-gradient(115deg,#7A4DFF 0%,#FF6A3D 100%);
  --lime:#C8F25C;
  --ink-900:#171425;
  --ink-700:#2A2637;
  --body:#1F1D28;
  --muted:#5C586B;
  --line:#E8E3DA;
  --surface:#FFFFFF;
  --surface-2:#F8F6F2;
  --radius-lg:24px;
  --radius:20px;
  --radius-sm:14px;
  --shadow:0 2px 6px rgba(23,20,37,.04),0 12px 32px rgba(23,20,37,.08);
  --shadow-hover:0 20px 48px rgba(122,77,255,.16);
  --ease:220ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--surface-2);
  -webkit-font-smoothing:antialiased;
}
body.nav-lock{overflow:hidden;}
img{max-width:100%;display:block;border:0;border-radius:16px;}
a{color:var(--brand-1);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease);}
a:hover{color:var(--brand-2);}
p{margin:0 0 18px;color:var(--body);}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 18px;padding-left:20px;}
li{margin-bottom:10px;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--ink-900);}
h1{font-size:clamp(30px,4.4vw,54px);line-height:1.16;letter-spacing:-0.02em;font-weight:800;}
h2{font-size:clamp(24px,3vw,38px);line-height:1.28;}
h3{font-size:clamp(19px,2vw,24px);line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
h5{font-size:14px;line-height:1.6;font-weight:600;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;box-shadow:0 0 0 4px rgba(122,77,255,.18);}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head p{font-size:17px;color:var(--muted);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--brand-1);
  background:rgba(122,77,255,.09);
  border:1px solid rgba(122,77,255,.18);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;font-weight:600;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--lime);display:inline-block;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;line-height:1.2;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
}
.btn i{font-size:13px;transition:transform var(--ease);}
.btn-primary{
  background:var(--grad-brand);color:#fff;box-shadow:0 8px 22px rgba(122,77,255,.26);
  background-size:150% 150%;background-position:0% 50%;
}
.btn-primary:hover{
  color:#fff;transform:translateY(-2px);background-position:100% 50%;
  box-shadow:0 16px 34px rgba(122,77,255,.34);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(122,77,255,.28);}
.btn-ghost{background:var(--surface);color:var(--ink-900);border-color:var(--line);}
.btn-ghost:hover{background:rgba(122,77,255,.06);border-color:var(--brand-1);color:var(--brand-1);transform:translateY(-2px);}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.36);}
.btn-light:hover{background:rgba(255,255,255,.24);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}

/* 卡片通用 */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px;
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(122,77,255,.32);}
.icon-box{
  width:44px;height:44px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(122,77,255,.10);color:var(--brand-1);font-size:18px;margin-bottom:18px;
}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:5px 12px;border-radius:999px;
  background:rgba(122,77,255,.10);color:var(--brand-1);
  border:1px solid rgba(122,77,255,.16);
}
.pill-orange{background:rgba(255,106,61,.10);color:#D8451A;border-color:rgba(255,106,61,.20);}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-2);}
.link-arrow i{transition:transform var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

/* 导航 */
.site-header{padding:20px 0 0;position:relative;z-index:50;}
.nav-card{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  padding:14px 18px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;background:var(--grad-brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 8px 18px rgba(122,77,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:18px;font-weight:800;color:var(--ink-900);letter-spacing:-0.01em;}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--muted);margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:8px;flex:1;justify-content:center;}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 13px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;color:var(--ink-700);
  border:1px solid transparent;position:relative;
  transition:background-color var(--ease),color var(--ease),transform var(--ease),border-color var(--ease);
}
.nav-item i{font-size:13px;color:var(--muted);transition:color var(--ease);}
.nav-item:hover{background:rgba(122,77,255,.08);color:var(--brand-1);transform:translateY(-1px);}
.nav-item:hover i{color:var(--brand-1);}
.nav-item.active{background:rgba(122,77,255,.10);color:var(--brand-1);border-color:rgba(122,77,255,.18);}
.nav-item.active i{color:var(--brand-1);}
.nav-item.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:3px;background:var(--grad-brand);
}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:13px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-900);font-size:18px;
}
.nav-toggle:hover{border-color:var(--brand-1);color:var(--brand-1);}

/* 面包屑 */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted);font-weight:600;}
.breadcrumb a:hover{color:var(--brand-1);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--ink-900);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* Hero 横幅 */
.hero-wrap{padding:28px 0 0;}
.hero-banner{
  position:relative;overflow:hidden;border-radius:28px;
  padding:64px 56px;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  box-shadow:var(--shadow);
}
.hero-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(110deg,rgba(23,20,37,.94) 0%,rgba(23,20,37,.76) 52%,rgba(23,20,37,.42) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:720px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
  color:#fff;font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--lime);}
.hero-banner h1{color:#fff;margin-bottom:18px;}
.hero-banner h1 .hl{
  position:relative;display:inline-block;padding:0 6px;
}
.hero-banner h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:12px;border-radius:6px;
  background:var(--grad-brand);opacity:.9;z-index:-1;
}
.hero-banner h1 .hl{z-index:1;}
.hero-sub{color:rgba(255,255,255,.86);font-size:17px;max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;}
.hero-trust span{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);font-weight:600;}
.hero-trust i{color:var(--lime);font-size:12px;}

/* 数据徽章条 */
.stats-strip{margin-top:28px;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.stat-badge{
  position:relative;background:var(--ink-900);border-radius:var(--radius-sm);
  padding:26px 24px 22px;border:1px solid rgba(255,255,255,.10);overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease);
}
.stat-badge::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:0 4px 4px 0;background:var(--grad-brand);
}
.stat-badge:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(23,20,37,.24);}
.stat-num{font-size:clamp(30px,3.6vw,44px);font-weight:800;color:#fff;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-0.02em;}
.stat-num small{font-size:14px;font-weight:600;margin-left:5px;color:rgba(255,255,255,.7);letter-spacing:0;}
.stat-label{margin-top:8px;font-size:13px;color:rgba(255,255,255,.66);line-height:1.6;}
.stat-badge .lime{position:absolute;right:18px;top:18px;width:7px;height:7px;border-radius:50%;background:var(--lime);}

/* 2×2 数据卡 */
.data-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.data-card{position:relative;display:flex;flex-direction:column;}
.data-card .pill{position:absolute;top:28px;right:28px;}
.data-card h3{margin-bottom:12px;padding-right:76px;}
.data-card p{color:var(--muted);font-size:15px;margin-bottom:18px;}
.mini-list{list-style:none;padding:0;margin:0 0 22px;}
.mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--body);margin-bottom:10px;line-height:1.7;}
.mini-list li i{color:var(--brand-1);font-size:12px;margin-top:7px;flex-shrink:0;}
.data-card .link-arrow{margin-top:auto;}

/* 图文区 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);}
.split-media img{width:100%;height:100%;object-fit:cover;border-radius:0;aspect-ratio:4/3;}
.split-media .float-tag{
  position:absolute;left:20px;top:20px;background:rgba(255,255,255,.94);backdrop-filter:blur(6px);
  border-radius:999px;padding:7px 15px;font-size:12px;font-weight:700;color:var(--brand-1);
  border:1px solid rgba(122,77,255,.2);
}
.split-body h2{margin-bottom:16px;}
.split-body > p{color:var(--muted);font-size:16px;}
.check-list{list-style:none;padding:0;margin:24px 0 0;}
.check-list li{display:flex;gap:14px;align-items:flex-start;margin-bottom:16px;}
.check-list .num{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:rgba(122,77,255,.10);color:var(--brand-1);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;margin-top:3px;font-variant-numeric:tabular-nums;
}
.check-list strong{display:block;font-size:15px;color:var(--ink-900);margin-bottom:2px;}
.check-list span.desc{font-size:14px;color:var(--muted);line-height:1.7;}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(122,77,255,.32);}
.step-index{font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--brand-2);margin-bottom:10px;font-variant-numeric:tabular-nums;}
.step-card h4{margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--muted);margin:0;}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:40px;align-items:start;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  margin-bottom:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:rgba(122,77,255,.4);box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 56px 20px 22px;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:0 3px 3px 0;background:var(--grad-brand);
}
.faq-item summary::after{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(122,77,255,.10);color:var(--brand-1);
  font-size:16px;font-weight:700;line-height:1;
}
.faq-item[open] summary::after{content:"−";background:var(--grad-brand);color:#fff;}
.faq-item summary:hover{color:var(--brand-1);}
.faq-answer{padding:0 22px 20px 22px;font-size:15px;color:var(--muted);line-height:1.8;}
.faq-side{background:var(--ink-900);border-radius:var(--radius-lg);padding:32px;color:#fff;position:sticky;top:24px;}
.faq-side h4{color:#fff;margin-bottom:10px;font-size:19px;}
.faq-side p{color:rgba(255,255,255,.72);font-size:14px;margin-bottom:22px;}
.faq-side .btn{width:100%;}
.faq-side .side-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-top:18px;}
.faq-side .side-meta .dot{width:7px;height:7px;border-radius:50%;background:var(--lime);}

/* CTA */
.cta-card{
  position:relative;overflow:hidden;
  background:var(--surface);
  border-radius:var(--radius-lg);
  padding:56px;
  border:1px solid transparent;
  background-image:linear-gradient(var(--surface),var(--surface)),var(--grad-brand);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:var(--shadow);
}
.cta-card::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,77,255,.18),transparent 70%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;}
.cta-inner h2{margin-bottom:10px;}
.cta-inner p{color:var(--muted);font-size:15px;margin:0;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 页脚 */
.site-footer{
  margin-top:96px;
  background:var(--ink-900);
  color:rgba(255,255,255,.78);
  border-top:3px solid transparent;
  border-image:var(--grad-brand) 1;
  padding:72px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px;}
.footer-col h5{color:#fff;margin-bottom:18px;display:inline-flex;align-items:center;gap:8px;}
.footer-col h5::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2);}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);display:inline-block;transition:color var(--ease),transform var(--ease);}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.68);}
.footer-contact i{color:var(--brand-2);font-size:13px;margin-top:6px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* 响应式 */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .nav-item{padding:8px 10px;font-size:13px;}
  .nav-item i{font-size:12px;}
  .nav-card{gap:10px;padding:12px 14px;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto;}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;
    width:min(320px,86vw);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:10px;padding:88px 22px 32px;
    background:var(--ink-900);
    transform:translateX(102%);
    transition:transform 260ms ease;
    z-index:80;
    box-shadow:0 0 0 100vmax rgba(23,20,37,.001);
  }
  .nav-links.open{transform:translateX(0);box-shadow:-24px 0 60px rgba(23,20,37,.4),0 0 0 100vmax rgba(23,20,37,.55);}
  .nav-links .nav-item{
    background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.08);
    padding:14px 16px;font-size:15px;justify-content:flex-start;
  }
  .nav-links .nav-item i{color:rgba(255,255,255,.6);}
  .nav-links .nav-item::after{display:none;}
  .nav-links .nav-item::before{
    content:"\f105";font-family:"Font Awesome 6 Free";font-weight:900;
    position:absolute;right:16px;color:var(--brand-2);font-size:14px;
  }
  .nav-links .nav-item.active{background:rgba(122,77,255,.24);border-color:rgba(122,77,255,.5);color:#fff;}
  .hero-banner{padding:48px 32px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-media{order:-1;}
  .steps{grid-template-columns:1fr;}
  .faq-layout{grid-template-columns:1fr;}
  .faq-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-card{padding:40px 32px;}
  .cta-inner{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .hero-wrap{padding:18px 0 0;}
  .hero-banner{padding:38px 22px;border-radius:22px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-trust{gap:14px;}
  .stats-grid{grid-template-columns:1fr;}
  .data-grid{grid-template-columns:1fr;}
  .data-card .pill{position:static;margin-bottom:14px;align-self:flex-start;}
  .data-card h3{padding-right:0;}
  .card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{margin-top:56px;padding:52px 0 26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-card{padding:30px 22px;}
  .cta-actions .btn{width:100%;}
  .breadcrumb{font-size:12px;}
}

/* roulang page: category5 */
:root{
  --brand-1:#7A4DFF;
  --brand-2:#FF6A3D;
  --grad-brand:linear-gradient(115deg,#7A4DFF 0%,#FF6A3D 100%);
  --lime:#C8F25C;
  --ink-900:#171425;
  --ink-700:#2A2637;
  --body:#1F1D28;
  --muted:#5C586B;
  --line:#E8E3DA;
  --surface:#FFFFFF;
  --surface-2:#F8F6F2;
  --radius-xl:28px;
  --radius-lg:24px;
  --radius-md:20px;
  --radius-sm:14px;
  --radius-xs:12px;
  --shadow-1:0 2px 6px rgba(23,20,37,.04),0 12px 32px rgba(23,20,37,.08);
  --shadow-hover:0 20px 48px rgba(122,77,255,.16);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  font-family:'PingFang SC','Noto Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--surface-2);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-1);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-2);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--body);font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.container-narrow{max-width:960px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  padding:18px 0;
  background:rgba(248,246,242,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-card{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:10px 14px;
  box-shadow:var(--shadow-1);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--body);}
.brand:hover{color:var(--body);}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-size:17px;
  box-shadow:0 8px 18px rgba(122,77,255,.28);
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:18px;font-weight:800;letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.18em;margin-top:3px;font-weight:500;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-item{
  position:relative;
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 13px 11px;
  border-radius:var(--radius-sm);
  font-size:14px;color:var(--muted);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-item i{font-size:13px;opacity:.85;}
.nav-item:hover{background:rgba(122,77,255,.08);color:var(--brand-1);transform:translateY(-1px);}
.nav-item.active{background:rgba(122,77,255,.10);color:var(--brand-1);font-weight:600;}
.nav-item.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:4px;width:20px;height:3px;border-radius:2px;background:var(--grad-brand);
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:13px;
  border:1px solid var(--line);background:#fff;color:var(--body);
  font-size:17px;cursor:pointer;align-items:center;justify-content:center;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--brand-1);color:var(--brand-1);background:rgba(122,77,255,.06);}
.mask{
  position:fixed;inset:0;background:rgba(23,20,37,.58);
  opacity:0;pointer-events:none;transition:opacity .24s ease;z-index:90;
}
.mask.show{opacity:1;pointer-events:auto;}
.mobile-panel{
  position:fixed;top:88px;left:16px;right:16px;
  background:var(--ink-900);border-radius:var(--radius-md);
  padding:14px;z-index:95;display:none;
  box-shadow:0 30px 60px rgba(23,20,37,.45);
  max-height:calc(100vh - 120px);overflow-y:auto;
}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:var(--radius-sm);
  color:#fff;font-size:15px;background:rgba(255,255,255,.05);
  margin-bottom:8px;transition:background .2s ease;
}
.mobile-panel a:last-child{margin-bottom:0;}
.mobile-panel a:hover,.mobile-panel a.active{background:rgba(122,77,255,.30);color:#fff;}
.mobile-panel a i{color:var(--brand-2);font-size:14px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:13px 26px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(122,77,255,.26);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(122,77,255,.36);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(122,77,255,.28);}
.btn-ghost{background:#fff;color:var(--body);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand-1);color:var(--brand-1);background:rgba(122,77,255,.06);transform:translateY(-2px);}
.btn-on-dark{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.38);}
.btn-on-dark:hover{background:rgba(255,255,255,.20);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
a:focus-visible,button:focus-visible,.q-card:focus-visible,.faq-card:focus-visible{
  outline:2px solid var(--brand-1);outline-offset:3px;
  box-shadow:0 0 0 4px rgba(122,77,255,.18);
}

/* ===== 首屏 ===== */
.page-hero{padding:8px 0 24px;}
.hero-card{
  position:relative;overflow:hidden;
  border-radius:var(--radius-xl);
  padding:54px 52px 58px;
  color:#fff;
  background-image:
    linear-gradient(100deg,rgba(23,20,37,.94) 0%,rgba(23,20,37,.76) 52%,rgba(23,20,37,.42) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  box-shadow:0 24px 60px rgba(23,20,37,.20);
}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.68);margin-bottom:22px;
}
.crumb a{color:rgba(255,255,255,.86);}
.crumb a:hover{color:var(--lime);}
.crumb i{font-size:10px;opacity:.7;}
.crumb .current{color:#fff;font-weight:600;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.24);
  font-size:13px;letter-spacing:.02em;color:#fff;
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px rgba(200,242,92,.85);}
.hero-title{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.18;font-weight:800;letter-spacing:-.02em;
  color:#fff;margin:22px 0 16px;max-width:800px;
}
.mark{position:relative;display:inline-block;color:#fff;padding:0 4px;z-index:0;}
.mark::before{
  content:"";position:absolute;left:0;right:0;bottom:.06em;height:.30em;
  background:var(--grad-brand);border-radius:3px;opacity:.9;z-index:-1;
}
.hero-lead{
  font-size:17px;line-height:1.85;color:rgba(255,255,255,.84);
  max-width:640px;margin:0 0 30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ===== 通用板块 ===== */
.section{padding:88px 0;}
.section-alt{background:#fff;}
.section-head{max-width:740px;margin-bottom:40px;}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.10em;color:var(--brand-1);
}
.section-eyebrow::before{
  content:"";width:18px;height:3px;border-radius:2px;background:var(--grad-brand);
}
.section-title{
  font-size:clamp(24px,3vw,36px);line-height:1.28;
  margin:14px 0 14px;letter-spacing:-.015em;
}
.section-desc{font-size:16px;color:var(--muted);line-height:1.85;margin:0;}

/* ===== 快捷入口 ===== */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px;}
.q-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:26px 26px 24px;
  color:var(--body);box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.q-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(122,77,255,.32);color:var(--body);}
.q-icon{
  width:44px;height:44px;border-radius:var(--radius-sm);
  background:rgba(122,77,255,.10);color:var(--brand-1);
  display:grid;place-items:center;font-size:17px;margin-bottom:16px;
  transition:background .22s ease,color .22s ease;
}
.q-card:hover .q-icon{background:rgba(122,77,255,.16);}
.q-card h3{font-size:18px;margin:0 0 8px;font-weight:600;}
.q-card p{font-size:15px;color:var(--muted);line-height:1.8;margin:0;}
.q-more{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:16px;font-size:14px;font-weight:600;color:var(--brand-2);
}
.q-more i{font-size:12px;transition:transform .2s ease;}
.q-card:hover .q-more i{transform:translateX(3px);}

/* ===== FAQ 卡阵 ===== */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
.faq-col{display:grid;gap:24px;}
.faq-col.is-offset{padding-top:44px;}
.faq-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.faq-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(122,77,255,.30);}
.faq-q{
  display:flex;gap:10px;align-items:flex-start;
  font-size:18px;font-weight:600;line-height:1.55;margin:0 0 12px;
}
.faq-stripe{
  flex:0 0 4px;width:4px;height:20px;margin-top:4px;
  border-radius:2px;background:var(--grad-brand);
}
.faq-a{font-size:15px;color:var(--muted);line-height:1.85;margin:0 0 16px;}
.faq-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:12px;padding:4px 11px;border-radius:999px;
  background:var(--surface-2);border:1px solid var(--line);color:var(--muted);
}

/* ===== 图文分栏 ===== */
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center;}
.split-media{background:rgba(122,77,255,.08);border-radius:var(--radius-lg);overflow:hidden;}
.split-media img{
  width:100%;display:block;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  aspect-ratio:4/3;object-fit:cover;
}
.check-list{list-style:none;margin:26px 0 0;padding:0;display:grid;gap:16px;}
.check-list li{display:flex;gap:14px;align-items:flex-start;font-size:15px;color:var(--muted);line-height:1.8;}
.check-list .idx{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:rgba(122,77,255,.10);color:var(--brand-1);
  display:grid;place-items:center;font-size:13px;font-weight:700;margin-top:2px;
}
.check-list strong{color:var(--body);font-weight:600;}

/* ===== CTA ===== */
.cta-band{
  background:var(--grad-brand);
  border-radius:var(--radius-xl);
  padding:2px;
  box-shadow:0 20px 50px rgba(122,77,255,.22);
}
.cta-inner{
  background:#fff;border-radius:26px;
  padding:44px 46px;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin:0 0 10px;}
.cta-inner p{color:var(--muted);font-size:15px;line-height:1.85;margin:0;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;background:var(--ink-900);color:rgba(255,255,255,.72);
  padding-top:64px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.60);max-width:320px;margin:0;}
.footer-col h5{
  position:relative;font-size:14px;color:#fff;margin:0 0 18px;padding-left:14px;font-weight:600;
}
.footer-col h5::before{
  content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--lime);
}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-col a{color:rgba(255,255,255,.66);font-size:14px;display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.66);line-height:1.7;}
.footer-contact i{margin-top:5px;color:var(--brand-2);font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;justify-content:space-between;align-items:center;
  gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.45);
}

/* ===== 响应式 ===== */
@media (max-width:1180px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-cta{display:none;}
}
@media (max-width:1024px){
  .section{padding:72px 0;}
  .hero-card{padding:44px 36px 48px;}
  .quick-grid{grid-template-columns:1fr 1fr;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-media img{aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .hero-card{padding:36px 24px 40px;border-radius:22px;}
  .hero-lead{font-size:16px;}
  .quick-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .faq-col.is-offset{padding-top:0;}
  .cta-inner{padding:32px 26px;}
  .cta-band{border-radius:22px;}
  .cta-inner{border-radius:21px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
  .site-header{padding:12px 0;}
  .mobile-panel{top:80px;}
}
@media (max-width:520px){
  .hero-title{font-size:28px;}
  .btn{width:100%;}
  .hero-actions .btn,.cta-actions .btn{width:100%;}
  .faq-card{padding:22px;}
  .q-card{padding:22px;}
  .brand-sub{letter-spacing:.12em;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}