/* roulang page: index */
:root{
  --brand-1:#FF5F35;
  --brand-2:#7B2FF7;
  --lime:#B4FF3C;
  --teal:#22D3B8;
  --bg:#FFF7F2;
  --bg-2:#F6F1EC;
  --card:#FFFFFF;
  --ink:#16121F;
  --ink-2:#5B5568;
  --dark:#0F0C18;
  --dark-2:#171225;
  --line:rgba(22,18,31,.08);
  --line-dark:rgba(255,255,255,.14);
  --r-lg:24px;
  --r:16px;
  --r-sm:12px;
  --pill:999px;
  --sh:0 6px 20px rgba(22,18,31,.06);
  --sh-hover:0 14px 34px rgba(22,18,31,.12);
  --grad:linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  --max:1200px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-1)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:3px}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px;width:100%}
.section{padding:104px 0}
.section.tight{padding:88px 0}
.sec-head{max-width:720px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:#0E8C7B;text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad);display:block}
h2.sec-title{font-size:clamp(24px,3.4vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.sec-sub{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.85;max-width:640px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--pill);
  font-size:16px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,filter .18s ease,color .18s ease;
  white-space:nowrap;text-decoration:none;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(123,47,247,.22)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 32px rgba(123,47,247,.28)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(123,47,247,.24)}
.btn-ghost{background:transparent;border-color:rgba(22,18,31,.18);color:var(--ink)}
.btn-ghost:hover{background:rgba(255,95,53,.08);color:var(--ink);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:11px 22px;font-size:14px}
.btn-block{width:100%}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:fixed;top:20px;left:0;right:0;z-index:80;
  display:flex;justify-content:center;padding:0 18px;
  pointer-events:none;
}
.nav-pill{
  pointer-events:auto;
  width:100%;max-width:1180px;min-height:64px;
  display:flex;align-items:center;gap:20px;
  padding:8px 10px 8px 20px;
  background:rgba(255,247,242,.72);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border:1px solid rgba(22,18,31,.06);
  border-radius:var(--pill);
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled .nav-pill{
  background:rgba(255,247,242,.94);
  border-color:rgba(22,18,31,.1);
  box-shadow:0 12px 32px rgba(22,18,31,.12);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:30px;height:30px;border-radius:10px;background:var(--grad);
  box-shadow:0 6px 16px rgba(123,47,247,.28);position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;right:5px;bottom:5px;width:8px;height:8px;border-radius:3px;
  background:var(--lime);
}
.brand-text{font-size:16px;letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:6px;margin:0 auto;flex-wrap:nowrap}
.nav-links a{
  display:block;padding:9px 15px;border-radius:var(--pill);
  font-size:14.5px;font-weight:500;color:var(--ink-2);
  transition:color .2s ease,background-color .2s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(22,18,31,.05)}
.nav-links a.is-active{color:var(--brand-1);background:rgba(255,95,53,.1);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--pill);
  border:1px solid rgba(22,18,31,.12);background:#fff;color:var(--ink);
  font-size:13px;font-weight:600;cursor:pointer;align-items:center;justify-content:center;
}
.nav-drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(15,12,24,.97);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  padding:88px 24px 32px;
  display:none;flex-direction:column;
}
.nav-drawer.open{display:flex}
.nav-drawer a.drawer-link{
  color:#FFF7F2;font-size:22px;font-weight:600;letter-spacing:.06em;
  padding:16px 4px;border-bottom:1px solid var(--line-dark);
}
.nav-drawer a.drawer-link:hover,.nav-drawer a.drawer-link.is-active{color:var(--lime)}
.drawer-close{
  position:absolute;top:22px;right:22px;width:44px;height:44px;border-radius:var(--pill);
  background:rgba(255,255,255,.08);border:1px solid var(--line-dark);color:#FFF7F2;
  font-size:14px;cursor:pointer;
}
.drawer-cta{margin-top:auto;padding-top:24px}
.drawer-cta .btn{width:100%}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:150px 0 72px}
.hero::before{
  content:"";position:absolute;top:-180px;left:-120px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(255,95,53,.34),rgba(255,95,53,0) 68%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;top:-60px;right:-160px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle at 60% 40%,rgba(123,47,247,.26),rgba(123,47,247,0) 70%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--pill);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh);
  font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:22px;
}
.hero-badge i{width:8px;height:8px;border-radius:50%;background:var(--lime);display:block;box-shadow:0 0 0 3px rgba(180,255,60,.28)}
.hero h1{
  font-size:clamp(30px,5vw,54px);font-weight:800;line-height:1.15;letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero-sub{
  font-size:17px;font-weight:500;color:var(--ink-2);line-height:1.75;
  max-width:22em;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px}
.stat{
  display:flex;flex-direction:column;gap:2px;
  padding:12px 18px;border-radius:var(--r);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh);
}
.stat b{
  font-size:24px;font-weight:800;line-height:1.2;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat span{font-size:13px;color:var(--ink-2);font-weight:500}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:0 28px 64px rgba(22,18,31,.2);
  background:linear-gradient(135deg,#FFE2D6,#E7D9FF);
}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,12,24,0) 42%,rgba(15,12,24,.52) 100%);
  pointer-events:none;
}
.hero-visual-note{
  position:absolute;left:20px;bottom:18px;z-index:2;
  padding:10px 16px;border-radius:var(--pill);
  background:rgba(15,12,24,.6);border:1px solid var(--line-dark);
  color:#FFF7F2;font-size:13px;font-weight:500;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.anchor-bar{
  display:flex;gap:10px;overflow-x:auto;padding:6px 0 4px;margin-top:60px;
  scrollbar-width:none;
}
.anchor-bar::-webkit-scrollbar{display:none}
.anchor-bar a{
  flex:0 0 auto;padding:9px 18px;border-radius:var(--pill);
  font-size:13px;font-weight:500;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);
  transition:color .2s ease,background .2s ease,box-shadow .2s ease;
}
.anchor-bar a:hover{color:var(--ink)}
.anchor-bar a.active{
  color:var(--ink);font-weight:600;
  background:linear-gradient(135deg,rgba(255,95,53,.14),rgba(123,47,247,.14));
  border-color:transparent;
  box-shadow:inset 0 -2px 0 var(--lime);
}

/* ============ 卖点区 ============ */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.fcard{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:30px;
  box-shadow:var(--sh);
  transition:transform .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;gap:14px;
}
.fcard:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.fcard.wide-a{grid-column:span 7}
.fcard.wide-b{grid-column:span 5}
.fcard.wide-c{grid-column:span 5}
.fcard.wide-d{grid-column:span 7}
.fcard-icon{
  width:46px;height:46px;border-radius:14px;
  background:linear-gradient(135deg,rgba(255,95,53,.16),rgba(123,47,247,.16));
  display:flex;align-items:center;justify-content:center;
  font-size:20px;color:var(--brand-2);font-weight:800;
}
.fcard h3{font-size:19px;font-weight:600;line-height:1.45}
.fcard p{font-size:15px;color:var(--ink-2);line-height:1.8}
.fcard-media{margin-top:auto;border-radius:var(--r);overflow:hidden;background:linear-gradient(135deg,#FFE2D6,#E7D9FF)}
.fcard-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:2px}
.tag{
  display:inline-block;padding:4px 12px;border-radius:var(--pill);
  font-size:12px;font-weight:600;line-height:1.6;
  background:rgba(34,211,184,.12);color:#0E8C7B;
}
.tag.alt{background:rgba(123,47,247,.1);color:#6A25D6}

/* ============ 演示区（深色） ============ */
.demo{
  position:relative;background:var(--dark);color:#FFF7F2;overflow:hidden;
  padding:110px 0;
}
.demo::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.24;pointer-events:none;
}
.demo::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 78% 12%,rgba(123,47,247,.4),rgba(123,47,247,0) 60%);
  pointer-events:none;
}
.demo .wrap{position:relative;z-index:2}
.demo .eyebrow{color:var(--lime)}
.demo h2.sec-title{color:#FFF7F2}
.demo .sec-sub{color:rgba(255,247,242,.72)}
.device{
  max-width:880px;margin:0 auto;padding:14px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.05);border:1px solid var(--line-dark);
  box-shadow:0 30px 70px rgba(0,0,0,.5);
}
.device img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r);background:linear-gradient(135deg,#241B3A,#15101F)}
.device-cap{text-align:center;font-size:13px;color:rgba(255,247,242,.6);margin-top:14px}
.demo-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  margin-top:70px;
}
.demo-row.rev .demo-row-media{order:2}
.demo-row-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-dark);
  background:linear-gradient(135deg,#241B3A,#15101F);
  box-shadow:0 20px 50px rgba(0,0,0,.4);
}
.demo-row-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.demo-row-text h3{font-size:22px;font-weight:700;color:#FFF7F2;margin-bottom:14px}
.demo-row-text p{color:rgba(255,247,242,.72);font-size:15.5px;line-height:1.9}
.demo-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.demo-list li{
  position:relative;padding-left:22px;font-size:15px;color:rgba(255,247,242,.82);
}
.demo-list li::before{
  content:"";position:absolute;left:0;top:11px;width:10px;height:2px;border-radius:2px;
  background:var(--lime);
}

/* ============ 证据区 ============ */
.proof{background:var(--bg-2)}
.badge-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;margin-bottom:56px}
.badge{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:22px 18px;box-shadow:var(--sh);
  display:flex;flex-direction:column;gap:4px;
}
.badge b{font-size:30px;font-weight:800;line-height:1.15;color:var(--brand-2)}
.badge b em{font-size:13px;font-style:normal;font-weight:500;color:var(--ink-2);margin-left:2px}
.badge span{font-size:13px;color:var(--ink-2)}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:26px;box-shadow:var(--sh);display:flex;flex-direction:column;gap:16px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.quote:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.quote p{font-size:15px;color:var(--ink-2);line-height:1.85}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{
  width:46px;height:46px;border-radius:50%;flex:0 0 auto;
  background-color:#E7D9FF;background-size:cover;background-position:center;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;color:#6A25D6;font-size:16px;
}
.quote-person strong{display:block;font-size:14px;font-weight:600;color:var(--ink)}
.quote-person em{font-style:normal;font-size:12.5px;color:var(--ink-2)}

/* ============ 价格区 ============ */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:0;align-items:stretch}
.plan{
  position:relative;padding:38px 32px;border-radius:var(--r-lg);
  display:flex;flex-direction:column;gap:18px;
}
.plan + .plan{border-left:1px solid var(--line)}
.plan.featured{
  background:#fff;border:2px solid rgba(255,95,53,.55);
  box-shadow:0 22px 52px rgba(22,18,31,.14);
  padding:52px 32px;z-index:2;
}
.plan-flag{
  position:absolute;top:-13px;left:32px;
  padding:5px 14px;border-radius:var(--pill);
  background:var(--grad);color:#fff;font-size:12px;font-weight:600;
  box-shadow:0 8px 18px rgba(123,47,247,.28);
}
.plan h3{font-size:20px;font-weight:700}
.plan .plan-desc{font-size:14px;color:var(--ink-2);line-height:1.75}
.plan-price{display:flex;align-items:flex-end;gap:6px}
.plan-price b{font-size:38px;font-weight:800;line-height:1;color:var(--ink)}
.plan-price span{font-size:13px;color:var(--ink-2);padding-bottom:4px}
.plan ul{display:flex;flex-direction:column;gap:11px;margin-top:4px}
.plan li{position:relative;padding-left:24px;font-size:14.5px;color:var(--ink-2);line-height:1.7}
.plan li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:7px;
  border-left:2px solid var(--teal);border-bottom:2px solid var(--teal);
  transform:rotate(-45deg);
}
.plan .btn{margin-top:auto}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto}
.faq-item{
  position:relative;padding-left:22px;
  border-bottom:1px solid var(--line);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;border-radius:2px;
  background:rgba(22,18,31,.08);
  transition:background .22s ease,transform .22s ease;
}
.faq-item.open::before{background:var(--grad);transform:translateX(-3px)}
.faq-q{
  width:100%;min-height:56px;padding:16px 6px 16px 6px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-2);border-radius:2px;
  transition:transform .22s ease,background .22s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-item.open .faq-icon::before{background:var(--brand-1)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a p{
  padding:0 40px 20px 6px;
  font-size:15px;color:var(--ink-2);line-height:1.85;
}

/* ============ 资讯列表（CMS） ============ */
.news{background:var(--bg-2)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:14px;box-shadow:var(--sh);color:inherit;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);color:inherit;border-color:rgba(123,47,247,.24)}
.news-thumb{
  flex:0 0 96px;width:96px;height:72px;border-radius:var(--r-sm);
  background-color:#E7D9FF;background-size:cover;background-position:center;
  background-image:linear-gradient(135deg,#FFE2D6,#E7D9FF);
  object-fit:cover;display:block;
}
.news-body{display:flex;flex-direction:column;gap:6px;min-width:0}
.news-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.news-time{font-size:12px;color:var(--ink-2)}
.news-title{
  font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-sum{
  font-size:13px;color:var(--ink-2);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty{
  grid-column:1/-1;
  background:#fff;border:1px dashed rgba(22,18,31,.16);border-radius:var(--r);
  padding:52px 24px;text-align:center;
}
.empty i{
  display:flex;align-items:center;justify-content:center;
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  background:linear-gradient(135deg,rgba(255,95,53,.14),rgba(123,47,247,.14));
  font-style:normal;font-size:22px;color:var(--brand-2);
}
.empty p{color:var(--ink-2);font-size:15px}

/* ============ 页尾 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);padding:66px 40px;text-align:center;
  background:linear-gradient(135deg,#0F0C18 0%,#171225 100%);
  color:#FFF7F2;
}
.cta-band::after{
  content:"";position:absolute;top:-140px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(255,95,53,.42),rgba(255,95,53,0) 68%);
  pointer-events:none;
}
.cta-band h2{
  position:relative;z-index:2;
  font-size:clamp(24px,3.4vw,34px);font-weight:800;line-height:1.3;margin-bottom:12px;
}
.cta-band p{position:relative;z-index:2;color:rgba(255,247,242,.72);font-size:15.5px;margin-bottom:28px}
.cta-band .btn{position:relative;z-index:2}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,247,242,.72);padding:72px 0 32px;margin-top:104px}
.footer-grid{display:flex;flex-wrap:wrap;justify-content:space-between;gap:44px 20px}
.footer-col{flex:0 0 23%;min-width:0}
.footer-col h4{
  color:#FFF7F2;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#FFF7F2;font-weight:700;font-size:16px}
.footer-brand:hover{color:#FFF7F2}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(255,247,242,.62);max-width:30em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:13.5px;color:rgba(255,247,242,.72)}
.footer-col ul a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,247,242,.5);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 24px;border-radius:var(--pill);
  background:var(--grad);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 16px 34px rgba(123,47,247,.34);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.float-cta:hover{color:#fff;transform:translateY(-2px) scale(1.03);filter:brightness(1.06)}
.float-cta::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 0 3px rgba(180,255,60,.28);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .wrap{padding:0 28px}
  .nav-links a{padding:9px 12px;font-size:14px}
}
@media (max-width:1023px){
  .section{padding:76px 0}
  .section.tight{padding:68px 0}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-pill{padding:8px 10px 8px 18px;gap:12px}
  .hero{padding:132px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual img{aspect-ratio:16/9}
  .badge-wall{grid-template-columns:repeat(3,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:repeat(6,1fr)}
  .fcard.wide-a,.fcard.wide-b,.fcard.wide-c,.fcard.wide-d{grid-column:span 6}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .demo{padding:80px 0}
  .demo-row{grid-template-columns:1fr;gap:28px;margin-top:56px}
  .demo-row.rev .demo-row-media{order:0}
  .plans{grid-template-columns:1fr;gap:26px}
  .plan{padding:32px 26px}
  .plan + .plan{border-left:0;border-top:1px solid var(--line)}
  .plan.featured{padding:40px 26px}
  .footer-col{flex:0 0 46%}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .section{padding:56px 0}
  .section.tight{padding:52px 0}
  body{font-size:15px}
  .hero{padding:118px 0 44px}
  .hero h1{font-size:clamp(26px,7.4vw,34px)}
  .hero-actions .btn{flex:1 1 100%}
  .hero-stats{gap:10px}
  .stat{flex:1 1 calc(50% - 5px)}
  .anchor-bar{margin-top:36px}
  .feature-grid{grid-template-columns:1fr}
  .fcard.wide-a,.fcard.wide-b,.fcard.wide-c,.fcard.wide-d{grid-column:span 1}
  .badge-wall{grid-template-columns:repeat(2,1fr);gap:12px}
  .badge b{font-size:24px}
  .news-grid{grid-template-columns:1fr}
  .cta-band{padding:46px 22px}
  .site-footer{padding:56px 0 96px;margin-top:72px}
  .footer-col{flex:0 0 100%}
  .footer-bottom{flex-direction:column;gap:6px}
  .float-cta{
    right:12px;left:12px;bottom:12px;justify-content:center;
    padding:13px 18px;font-size:14.5px;
  }
  .faq-q{font-size:16px}
  .faq-a p{padding-right:16px}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --grad:linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,95,53,.12) 0%,rgba(123,47,247,.12) 100%);
  --brand-1:#FF5F35;
  --brand-2:#7B2FF7;
  --lime:#B4FF3C;
  --teal:#22D3B8;
  --dark-1:#0F0C18;
  --dark-2:#171225;
  --bg-1:#FFF7F2;
  --bg-2:#F6F1EC;
  --card:#FFFFFF;
  --ink:#16121F;
  --ink-2:#5B5568;
  --ink-3:#8A8494;
  --line:rgba(22,18,31,.08);
  --line-2:rgba(22,18,31,.14);
  --line-dark:rgba(255,255,255,.14);
  --txt-on-dark:#FFF7F2;
  --txt-on-dark-2:rgba(255,247,242,.72);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 6px 20px rgba(22,18,31,.06);
  --sh-2:0 14px 34px rgba(22,18,31,.12);
  --sp-1:16px;
  --sp-2:24px;
  --sp-3:32px;
  --sec:104px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  text-align:left;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-style:none;}
a{color:var(--teal);text-decoration:none;background-color:transparent;transition:color .22s ease;}
a:hover{color:var(--brand-2);}
button{font-family:inherit;font-size:inherit;line-height:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,h5{margin:0;font-family:inherit;color:inherit;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
::selection{background:rgba(123,47,247,.18);color:var(--ink);}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}

/* ============ 容器 ============ */
.container,.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,filter .22s ease;
}
.btn-primary{
  background-image:var(--grad);
  color:#fff;
  box-shadow:0 10px 24px rgba(123,47,247,.24);
}
.btn-primary:hover{
  color:#fff;
  filter:brightness(1.06) saturate(1.05);
  transform:translateY(-2px);
  box-shadow:0 16px 32px rgba(123,47,247,.3);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(123,47,247,.22);}
.btn-ghost{
  background:transparent;
  color:var(--txt-on-dark);
  border:1px solid var(--line-dark);
}
.btn-ghost:hover{
  color:var(--txt-on-dark);
  background:rgba(255,255,255,.1);
  transform:translateY(-2px);
}
.btn-light{
  background:#FFFFFF;
  color:var(--ink);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.btn-light:hover{color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-sm{padding:10px 20px;font-size:14px;}

/* ============ 头部胶囊导航 ============ */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:80;
  padding:16px 0;
  transition:padding .28s ease;
}
.site-header .container{max-width:1240px;}
.nav-shell{
  position:relative;
  display:flex;
  align-items:center;
  gap:22px;
  min-height:64px;
  padding:8px 10px 8px 18px;
  border-radius:var(--r-pill);
  background:rgba(255,247,242,.78);
  border:1px solid rgba(22,18,31,.06);
  box-shadow:0 4px 18px rgba(22,18,31,.05);
  -webkit-backdrop-filter:blur(16px) saturate(1.4);
  backdrop-filter:blur(16px) saturate(1.4);
  transition:background-color .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.is-scrolled{padding:10px 0;}
.site-header.is-scrolled .nav-shell{
  background:rgba(255,247,242,.95);
  border-color:var(--line);
  box-shadow:0 12px 30px rgba(22,18,31,.12);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:26px;
  height:26px;
  border-radius:9px;
  background-image:var(--grad);
  box-shadow:0 6px 14px rgba(123,47,247,.28);
  position:relative;
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:8px;
  border-radius:4px;
  background:rgba(255,255,255,.85);
}
.brand-name{
  font-size:17px;
  font-weight:800;
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  display:inline-block;
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
  transition:color .2s ease,background-color .2s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(22,18,31,.05);}
.nav-links a.is-active{
  color:var(--brand-2);
  background:rgba(123,47,247,.1);
  font-weight:600;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--bg-2);}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--ink);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 文章头部 ============ */
.article-head{
  position:relative;
  padding:158px 0 48px;
  background:
    radial-gradient(880px 380px at 10% -30%,rgba(255,95,53,.16),transparent 72%),
    radial-gradient(720px 340px at 92% -10%,rgba(123,47,247,.16),transparent 72%),
    linear-gradient(180deg,#FFF7F2 0%,rgba(255,247,242,0) 100%);
}
.article-head::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(22,18,31,.1),transparent);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-bottom:22px;
  font-size:13px;
  font-weight:500;
  color:var(--ink-3);
  line-height:1.6;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--teal);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .crumb-cat{color:var(--ink-2);}
.breadcrumb .current{
  color:var(--brand-2);
  font-weight:600;
  max-width:360px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-h1{
  max-width:920px;
  font-size:clamp(24px,3.4vw,38px);
  font-weight:800;
  line-height:1.28;
  letter-spacing:-.015em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:24px;
  font-size:13px;
  font-weight:500;
  color:var(--ink-3);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  background:rgba(34,211,184,.13);
  color:#0F907C;
  line-height:1.5;
}
.tag-brand{
  background:rgba(255,95,53,.14);
  color:#C93F19;
}
.tag-plain{
  background:rgba(22,18,31,.05);
  color:var(--ink-2);
  font-weight:500;
}
.meta-dot{
  width:5px;height:5px;border-radius:50%;
  background:rgba(22,18,31,.2);
}

/* ============ 正文阅读区 ============ */
.article-main{padding:56px 0 24px;}
.article-body{
  max-width:770px;
  margin:0 auto;
  font-size:16px;
  line-height:1.95;
  color:#2B2536;
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.05em;}
.article-body h2{
  position:relative;
  margin:44px 0 16px;
  padding-left:18px;
  font-size:clamp(21px,2.6vw,26px);
  font-weight:700;
  line-height:1.4;
  color:var(--ink);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;
  width:4px;height:1.05em;
  border-radius:3px;
  background-image:var(--grad);
}
.article-body h3{
  margin:30px 0 12px;
  font-size:19px;
  font-weight:600;
  line-height:1.45;
  color:var(--ink);
}
.article-body h4{
  margin:24px 0 10px;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink-2);
}
.article-body ul,
.article-body ol{
  margin:0 0 1.1em;
  padding-left:1.35em;
}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{
  margin-bottom:.5em;
  line-height:1.9;
}
.article-body li::marker{color:var(--brand-2);font-weight:700;}
.article-body blockquote{
  margin:26px 0;
  padding:18px 24px;
  border-left:3px solid transparent;
  border-image:var(--grad) 1;
  background:var(--bg-2);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink-2);
  font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;
  height:auto;
  margin:26px auto;
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  background:linear-gradient(135deg,rgba(255,95,53,.1),rgba(123,47,247,.1));
}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--ink-3);
  line-height:1.6;
}
.article-body a{
  color:var(--brand-2);
  border-bottom:2px solid rgba(123,47,247,.28);
  transition:border-color .2s ease,color .2s ease;
}
.article-body a:hover{
  color:var(--brand-1);
  border-bottom-color:var(--brand-1);
}
.article-body strong{font-weight:700;color:var(--ink);}
.article-body table{
  width:100%;
  margin:24px 0;
  border-collapse:separate;
  border-spacing:0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  overflow:hidden;
}
.article-body th,
.article-body td{
  padding:12px 16px;
  text-align:left;
  border-bottom:1px solid var(--line);
  line-height:1.7;
}
.article-body thead th{
  background:var(--bg-2);
  font-weight:600;
  color:var(--ink);
}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body code{
  padding:2px 7px;
  border-radius:6px;
  background:var(--bg-2);
  font-size:14px;
  color:#B3370F;
}
.article-body hr{
  margin:36px 0;
  border:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(22,18,31,.14),transparent);
}

/* ============ 文章尾部 ============ */
.article-foot{
  max-width:770px;
  margin:52px auto 0;
  padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.article-tags{display:flex;flex-wrap:wrap;gap:10px;}
.article-links{display:flex;flex-wrap:wrap;gap:20px;font-size:14px;font-weight:600;}
.article-links a{
  color:var(--teal);
  padding-bottom:2px;
  border-bottom:2px solid transparent;
  transition:border-color .22s ease,color .22s ease;
}
.article-links a:hover{color:var(--brand-2);border-bottom-color:var(--brand-2);}

/* ============ 空状态 ============ */
.empty-state{
  max-width:600px;
  margin:0 auto;
  padding:56px 32px;
  text-align:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
.empty-icon{
  width:64px;height:64px;
  margin:0 auto 22px;
  border-radius:20px;
  background-image:var(--grad);
  opacity:.9;
  position:relative;
}
.empty-icon::after{
  content:"";
  position:absolute;
  inset:20px;
  border-radius:6px;
  background:rgba(255,255,255,.85);
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:12px;}
.empty-state p{color:var(--ink-2);font-size:15.5px;margin-bottom:26px;}

/* ============ 底部 CTA ============ */
.cta-band{padding:80px 0 var(--sec);}
.cta-card{
  position:relative;
  overflow:hidden;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:52px 48px;
  border-radius:var(--r-lg);
  background:
    radial-gradient(600px 300px at 88% 10%,rgba(180,255,60,.18),transparent 70%),
    radial-gradient(520px 280px at 5% 100%,rgba(34,211,184,.22),transparent 70%),
    linear-gradient(135deg,#171225 0%,#0F0C18 100%);
  border:1px solid var(--line-dark);
  box-shadow:0 20px 46px rgba(15,12,24,.28);
}
.cta-card::after{
  content:"";
  position:absolute;
  right:-70px;top:-70px;
  width:240px;height:240px;
  border-radius:50%;
  background-image:var(--grad);
  opacity:.3;
  filter:blur(30px);
}
.cta-text{position:relative;z-index:1;max-width:560px;}
.cta-text h2{
  font-size:clamp(22px,3vw,30px);
  font-weight:700;
  color:var(--txt-on-dark);
  margin-bottom:12px;
  line-height:1.35;
}
.cta-text p{
  color:var(--txt-on-dark-2);
  font-size:15.5px;
  margin:0;
}
.cta-btns{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:60;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:14px 22px;
  border-radius:var(--r-pill);
  background-image:var(--grad);
  color:#fff;
  font-size:15px;
  font-weight:700;
  box-shadow:0 14px 34px rgba(123,47,247,.34);
  opacity:0;
  transform:translateY(16px);
  pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,filter .22s ease;
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);}
.float-cta svg{width:16px;height:16px;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark-1);
  color:var(--txt-on-dark-2);
  padding:72px 0 32px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
}
.footer-grid{
  display:flex;
  flex-wrap:wrap;
  gap:44px 40px;
  margin:0 0 56px;
  padding:0;
}
.footer-grid > .cell{
  flex:1 1 210px;
  min-width:200px;
  width:auto;
  padding:0;
}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:var(--txt-on-dark);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul li{
  margin-bottom:11px;
  font-size:14px;
  line-height:1.7;
}
.footer-col ul li a{
  color:var(--txt-on-dark-2);
  transition:color .22s ease;
}
.footer-col ul li a:hover{color:var(--lime);}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
  color:var(--txt-on-dark);
  font-size:17px;
  font-weight:800;
  letter-spacing:.02em;
}
.footer-brand:hover{color:var(--txt-on-dark);}
.footer-brand .brand-mark{width:24px;height:24px;border-radius:8px;}
.footer-brand .brand-mark::after{inset:7px;border-radius:3px;background:rgba(15,12,24,.75);}
.footer-col > p{
  font-size:14px;
  line-height:1.85;
  color:var(--txt-on-dark-2);
  max-width:300px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-top:26px;
  border-top:1px solid var(--line-dark);
  font-size:13px;
  color:rgba(255,247,242,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--sec:80px;}
  .container,.wrap{padding-left:24px;padding-right:24px;}
  .nav-shell{gap:12px;padding:7px 10px 7px 14px;min-height:58px;}
  .brand-name{font-size:15.5px;}
  .nav-actions .btn-sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:absolute;
    top:calc(100% + 12px);
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    margin-left:0;
    padding:14px;
    border-radius:var(--r-lg);
    background:rgba(15,12,24,.97);
    border:1px solid var(--line-dark);
    box-shadow:0 24px 50px rgba(15,12,24,.36);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
  }
  .nav-links.is-open{display:flex;}
  .nav-links a{
    width:100%;
    padding:14px 18px;
    font-size:17px;
    font-weight:600;
    letter-spacing:.04em;
    color:var(--txt-on-dark);
    border-radius:14px;
  }
  .nav-links a:hover{background:rgba(255,255,255,.08);color:var(--lime);}
  .nav-links a.is-active{background:rgba(255,255,255,.1);color:var(--lime);}
  .article-head{padding:132px 0 40px;}
  .breadcrumb .current{max-width:260px;}
  .cta-card{padding:40px 32px;}
  .cta-btns{width:100%;}
  .footer-grid{gap:36px 28px;}
}
@media (max-width:767px){
  :root{--sec:60px;}
  .container,.wrap{padding-left:18px;padding-right:18px;}
  body{font-size:15px;}
  .site-header{padding:10px 0;}
  .article-head{padding:118px 0 32px;}
  .breadcrumb{margin-bottom:16px;font-size:12.5px;}
  .breadcrumb .current{max-width:180px;}
  .article-main{padding:40px 0 16px;}
  .article-body{font-size:15.5px;line-height:1.9;}
  .article-body h2{margin:34px 0 14px;padding-left:15px;}
  .article-body blockquote{padding:16px 18px;}
  .article-foot{flex-direction:column;align-items:flex-start;gap:16px;}
  .cta-band{padding:56px 0 72px;}
  .cta-card{padding:32px 22px;border-radius:var(--r-md);}
  .cta-btns .btn{flex:1 1 100%;}
  .float-cta{right:16px;bottom:16px;padding:12px 18px;font-size:14px;}
  .site-footer{padding:56px 0 26px;}
  .footer-grid{gap:30px 24px;margin-bottom:40px;}
  .footer-grid > .cell{flex:1 1 100%;min-width:0;}
  .footer-col > p{max-width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;font-size:12.5px;}
}
@media (max-width:479px){
  .brand-name{font-size:14.5px;}
  .brand-mark{width:22px;height:22px;border-radius:7px;}
  .brand-mark::after{inset:7px;}
  .btn{padding:12px 22px;font-size:14.5px;}
  .empty-state{padding:40px 20px;}
  .article-body table{font-size:14px;}
  .article-body th,.article-body td{padding:10px 12px;}
}

/* roulang page: category1 */
:root{
  --brand-1:#FF5F35;
  --brand-2:#7B2FF7;
  --grad:linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,95,53,.14) 0%,rgba(123,47,247,.14) 100%);
  --lime:#B4FF3C;
  --teal:#22D3B8;
  --dark:#0F0C18;
  --dark-2:#171225;
  --warm:#FFF7F2;
  --warm-2:#F6F1EC;
  --white:#FFFFFF;
  --ink:#16121F;
  --ink-soft:#5B5568;
  --line:rgba(22,18,31,.08);
  --line-2:rgba(22,18,31,.14);
  --line-dark:rgba(255,255,255,.14);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --sh-1:0 6px 20px rgba(22,18,31,.06);
  --sh-2:0 14px 34px rgba(22,18,31,.12);
  --sh-dark:0 18px 40px rgba(0,0,0,.45);
  --wrap:1200px;
  --sp-1:16px;
  --sp-2:24px;
  --sp-3:32px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--warm);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-2);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--teal);}
h1,h2,h3,h4{margin:0 0 12px;line-height:1.25;color:var(--ink);font-weight:700;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.15em;}
li{margin-bottom:8px;}
figure{margin:0;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand-2);
  outline-offset:3px;
  border-radius:8px;
}
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 32px;
}
.wrap--narrow{max-width:940px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
  background:none;
}
.btn-primary{
  background-image:var(--grad);
  color:#fff;
  box-shadow:0 8px 22px rgba(123,47,247,.24);
}
.btn-primary:hover{
  color:#fff;
  filter:brightness(1.06);
  transform:translateY(-2px);
  box-shadow:0 14px 30px rgba(123,47,247,.3);
}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 6px 14px rgba(123,47,247,.26);}
.btn-ghost{
  border-color:var(--line-2);
  color:var(--ink);
  background:rgba(255,255,255,.7);
}
.btn-ghost:hover{
  color:var(--ink);
  border-color:var(--brand-2);
  background:rgba(123,47,247,.08);
  transform:translateY(-2px);
}
.btn-ghost-dark{
  border-color:var(--line-dark);
  color:var(--warm);
  background:rgba(255,255,255,.04);
}
.btn-ghost-dark:hover{
  color:var(--warm);
  border-color:var(--lime);
  background:rgba(180,255,60,.1);
  transform:translateY(-2px);
}
.btn-sm{padding:11px 20px;font-size:14px;}

/* ---------- 标签 & 徽章 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:500;
  line-height:1.6;
  background:rgba(34,211,184,.12);
  color:#0F7A68;
  border:1px solid rgba(34,211,184,.24);
}
.tag--brand{background:rgba(123,47,247,.1);color:#5B21C0;border-color:rgba(123,47,247,.2);}
.tag--lime{background:rgba(180,255,60,.22);color:#3E5A00;border-color:rgba(180,255,60,.5);}

/* ---------- 顶部悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  top:18px;
  left:0;
  right:0;
  z-index:80;
  transition:top .25s ease;
}
.nav-shell{
  max-width:1160px;
  margin:0 auto;
  padding:9px 12px 9px 18px;
  display:flex;
  align-items:center;
  gap:18px;
  border-radius:999px;
  background:rgba(255,247,242,.72);
  border:1px solid rgba(22,18,31,.06);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled .nav-shell{
  background:rgba(255,247,242,.94);
  border-color:var(--line-2);
  box-shadow:0 12px 30px rgba(22,18,31,.1);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
  font-weight:800;
  font-size:16px;
  letter-spacing:-.01em;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:26px;
  height:26px;
  border-radius:9px;
  background-image:var(--grad);
  box-shadow:0 4px 12px rgba(123,47,247,.32);
  flex:0 0 auto;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-links a{
  padding:9px 14px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-soft);
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(22,18,31,.05);}
.nav-links a.is-active{
  color:#fff;
  background-image:var(--grad);
  font-weight:600;
  box-shadow:0 6px 16px rgba(123,47,247,.24);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:999px;
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.7);
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  display:block;
  width:16px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:500;
  color:var(--ink-soft);
  margin-bottom:22px;
}
.crumb a{color:var(--ink-soft);}
.crumb a:hover{color:var(--brand-2);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--brand-2);font-weight:600;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:150px 0 84px;
  background:var(--warm);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(760px 420px at 82% 8%,rgba(123,47,247,.20),transparent 62%),
    radial-gradient(620px 400px at 8% 22%,rgba(255,95,53,.18),transparent 60%),
    radial-gradient(520px 360px at 50% 100%,rgba(34,211,184,.14),transparent 65%);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(22,18,31,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(22,18,31,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(720px 420px at 60% 30%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(720px 420px at 60% 30%,#000 0%,transparent 78%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2;}
.hero-row{margin-left:-16px;margin-right:-16px;}
.hero-row > .cell{padding-left:16px;padding-right:16px;}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 16px;
  border-radius:999px;
  background:rgba(255,255,255,.78);
  border:1px solid var(--line-2);
  font-size:13px;
  font-weight:600;
  color:var(--ink-soft);
  margin-bottom:20px;
}
.pill i{
  width:7px;height:7px;border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 4px rgba(180,255,60,.28);
  display:inline-block;
}
.hero h1{
  font-size:clamp(30px,5vw,54px);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero h1 .hl{
  background-image:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  line-height:1.7;
  color:var(--ink-soft);
  margin-bottom:28px;
  max-width:32ch;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;}
.badge-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.badge{
  min-width:132px;
  padding:14px 18px;
  border-radius:18px;
  background:rgba(255,255,255,.86);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.badge strong{
  display:block;
  font-size:26px;
  font-weight:800;
  line-height:1.1;
  letter-spacing:-.02em;
  background-image:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.badge span{font-size:13px;color:var(--ink-soft);font-weight:500;}
.hero-visual{margin-top:36px;}
.hero-card{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  background-image:var(--grad-soft),linear-gradient(135deg,#EADFF6,#FFE2D6);
  box-shadow:var(--sh-2);
}
.hero-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.hero-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(15,12,24,0) 42%,rgba(15,12,24,.62) 100%);
}
.hero-card figcaption{
  position:absolute;
  left:22px;
  right:22px;
  bottom:18px;
  z-index:2;
  color:var(--warm);
  font-size:13.5px;
  line-height:1.6;
  font-weight:500;
}
.hero-card figcaption b{display:block;font-size:16px;font-weight:700;margin-bottom:2px;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--warm-2);}
.section-head{max-width:680px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,3.4vw,36px);font-weight:700;}
.section-head p{color:var(--ink-soft);margin-bottom:0;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand-2);
  margin-bottom:12px;
}

/* ---------- 双列：内容 + 目录 ---------- */
.layout-grid{margin-left:-16px;margin-right:-16px;}
.layout-grid > .cell{padding-left:16px;padding-right:16px;}
.article-block h2{
  font-size:clamp(22px,2.6vw,30px);
  position:relative;
  padding-left:16px;
  margin-top:8px;
}
.article-block h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.28em;
  bottom:.28em;
  width:4px;
  border-radius:4px;
  background-image:var(--grad);
}
.article-block h3{font-size:19px;font-weight:600;margin-top:26px;}
.article-block p{color:#332C40;}
.article-block .lead{font-size:17px;color:var(--ink);}
.feature-row{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:28px;
  align-items:center;
  margin:34px 0 40px;
  padding:22px;
  border-radius:var(--r-lg);
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,transform .25s ease;
}
.feature-row:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.feature-row.reverse .feature-media{order:2;}
.feature-media{
  border-radius:var(--r-md);
  overflow:hidden;
  background-image:var(--grad-soft),linear-gradient(135deg,#EFE6FA,#FFE7DD);
}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.feature-text h3{margin-top:0;}
.feature-text ul{padding-left:1.05em;margin-bottom:0;}
.feature-text li{color:var(--ink-soft);}
.feature-text li::marker{color:var(--brand-2);}

/* 目录 */
.toc{
  position:sticky;
  top:104px;
  padding:26px 24px;
  border-radius:var(--r-lg);
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.toc h4{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.toc ol{list-style:none;padding:0;margin:0 0 20px;counter-reset:toc;}
.toc li{margin-bottom:2px;}
.toc a{
  display:block;
  padding:9px 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--ink-soft);
  border-left:2px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,padding-left .2s ease;
}
.toc a:hover{background:rgba(123,47,247,.07);color:var(--brand-2);}
.toc a.is-active{
  color:var(--brand-2);
  font-weight:600;
  border-left-color:var(--brand-2);
  background:rgba(123,47,247,.07);
  padding-left:14px;
}
.toc-note{
  font-size:13px;
  line-height:1.7;
  color:var(--ink-soft);
  padding-top:16px;
  border-top:1px solid var(--line);
}

/* ---------- 卡片网格 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.card{
  display:flex;
  flex-direction:column;
  padding:26px;
  border-radius:var(--r-md);
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.card:hover,.card:focus-within{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:rgba(123,47,247,.28);
}
.card-icon{
  width:44px;
  height:44px;
  border-radius:14px;
  background-image:var(--grad);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-weight:800;
  font-size:16px;
  margin-bottom:16px;
  box-shadow:0 8px 18px rgba(123,47,247,.22);
}
.card h3{font-size:19px;margin-bottom:8px;}
.card p{color:var(--ink-soft);font-size:15px;margin-bottom:14px;}
.card .tag{align-self:flex-start;margin-top:auto;}

/* ---------- 深色流程区 ---------- */
.dark-band{
  position:relative;
  background:var(--dark);
  color:var(--warm);
  padding:96px 0;
  overflow:hidden;
}
.dark-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(15,12,24,.86),rgba(15,12,24,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.9;
}
.dark-band .wrap{position:relative;z-index:2;}
.dark-band h2,.dark-band h3{color:var(--warm);}
.dark-band p,.dark-band li{color:rgba(255,247,242,.72);}
.dark-band .section-head p{color:rgba(255,247,242,.72);}
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  margin-top:8px;
}
.step{
  padding:24px 22px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-dark);
  box-shadow:var(--sh-dark);
  transition:transform .25s ease,border-color .25s ease,background-color .25s ease;
}
.step:hover{
  transform:translateY(-3px);
  border-color:rgba(180,255,60,.5);
  background:rgba(180,255,60,.06);
}
.step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:12px;
  background:rgba(180,255,60,.16);
  border:1px solid rgba(180,255,60,.45);
  color:var(--lime);
  font-weight:800;
  font-size:14px;
  margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;margin-bottom:0;}

/* ---------- 场景 / 数据徽章墙 ---------- */
.stat-wall{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
.stat{
  padding:22px 20px;
  border-radius:var(--r-md);
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.stat:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.stat strong{
  display:block;
  font-size:clamp(28px,3vw,40px);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-.02em;
  color:var(--ink);
}
.stat strong em{
  font-style:normal;
  font-size:13px;
  font-weight:600;
  color:var(--ink-soft);
  margin-left:4px;
  letter-spacing:0;
}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:var(--ink-soft);font-weight:500;}

.scene-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.scene{
  display:flex;
  gap:16px;
  padding:22px;
  border-radius:var(--r-md);
  background:var(--warm-2);
  border:1px solid var(--line);
  transition:background-color .25s ease,transform .25s ease;
}
.scene:hover{background:var(--white);transform:translateY(-2px);box-shadow:var(--sh-1);}
.scene-mark{
  flex:0 0 auto;
  width:10px;
  border-radius:999px;
  background-image:var(--grad);
}
.scene h3{font-size:17px;margin-bottom:6px;}
.scene p{font-size:14.5px;color:var(--ink-soft);margin-bottom:0;}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;}
.faq{
  border-left:3px solid var(--line-2);
  padding-left:20px;
  margin-bottom:18px;
  transition:border-color .25s ease,padding-left .25s ease;
}
.faq[open]{border-left-color:var(--brand-2);padding-left:24px;}
.faq summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:56px;
  padding:12px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"+";
  flex:0 0 auto;
  width:28px;
  height:28px;
  border-radius:50%;
  border:1px solid var(--line-2);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  font-weight:700;
  color:var(--brand-2);
  transition:transform .2s ease,background-color .2s ease,color .2s ease;
}
.faq[open] summary::after{
  content:"−";
  transform:rotate(180deg);
  background-image:var(--grad);
  color:#fff;
  border-color:transparent;
}
.faq .faq-body{
  padding:0 0 18px;
  font-size:15.5px;
  line-height:1.9;
  color:var(--ink-soft);
  animation:fadeUp .2s ease both;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.related-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  color:var(--ink);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.related-card:hover{
  color:var(--ink);
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  border-color:rgba(123,47,247,.28);
}
.related-card .thumb{
  background-image:var(--grad-soft),linear-gradient(135deg,#EFE6FA,#FFE7DD);
  overflow:hidden;
}
.related-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .body{padding:22px;display:flex;flex-direction:column;flex:1;}
.related-card h3{font-size:18px;margin-bottom:8px;}
.related-card p{font-size:14.5px;color:var(--ink-soft);margin-bottom:14px;}
.related-card .more{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--brand-2);
}
.related-card:hover .more{color:var(--teal);}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  position:relative;
  padding:80px 0;
  background-image:var(--grad);
  color:#fff;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(600px 320px at 88% 10%,rgba(255,255,255,.24),transparent 60%);
  pointer-events:none;
}
.cta-band .wrap{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.86);margin-bottom:0;max-width:52ch;}
.cta-band .btn-white{
  background:#fff;
  color:#3B1D6B;
  box-shadow:0 12px 28px rgba(0,0,0,.18);
}
.cta-band .btn-white:hover{color:#3B1D6B;filter:brightness(1.03);transform:translateY(-2px);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:26px;
  bottom:26px;
  z-index:90;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 24px;
  border-radius:999px;
  background:var(--dark-2);
  color:var(--warm);
  font-size:14.5px;
  font-weight:600;
  border:1px solid var(--line-dark);
  box-shadow:0 16px 34px rgba(0,0,0,.32);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease,background-color .25s ease;
}
.float-cta:hover{
  color:var(--warm);
  transform:translateY(-2px) scale(1.03);
  border-color:rgba(180,255,60,.6);
  box-shadow:0 20px 40px rgba(0,0,0,.38);
}
.float-cta .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 4px rgba(180,255,60,.22);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);
  color:rgba(255,247,242,.72);
  padding:72px 0 26px;
}
.footer-grid{margin-left:-16px;margin-right:-16px;}
.footer-grid > .footer-col{padding:0 16px 28px;}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--warm);
  font-weight:800;
  font-size:17px;
  margin-bottom:14px;
}
.footer-brand:hover{color:var(--lime);}
.footer-col p{font-size:14.5px;line-height:1.8;color:rgba(255,247,242,.62);}
.footer-col h4{
  color:var(--warm);
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;font-size:14px;color:rgba(255,247,242,.62);}
.footer-col a{color:rgba(255,247,242,.72);font-size:14px;}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  padding-top:22px;
  border-top:1px solid var(--line-dark);
  font-size:13px;
  color:rgba(255,247,242,.5);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  .wrap{padding:0 26px;}
  .nav-shell{max-width: calc(100% - 40px);}
}
@media screen and (max-width:1023px){
  .section{padding:72px 0;}
  .dark-band{padding:72px 0;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-wall{grid-template-columns:repeat(2,minmax(0,1fr));}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .toc{position:static;margin-top:32px;}
  .hero{padding:130px 0 64px;}
  .nav-links{
    position:fixed;
    top:86px;
    left:20px;
    right:20px;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:18px;
    border-radius:24px;
    background:rgba(255,247,242,.98);
    border:1px solid var(--line-2);
    box-shadow:0 24px 50px rgba(22,18,31,.16);
    transform:translateY(-10px);
    opacity:0;
    pointer-events:none;
    visibility:hidden;
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
    max-height:calc(100vh - 130px);
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;transform:translateY(0);pointer-events:auto;visibility:visible;}
  .nav-links a{padding:14px 16px;font-size:16px;letter-spacing:.03em;border-radius:14px;}
  .nav-toggle{display:flex;}
}
@media screen and (max-width:767px){
  .wrap{padding:0 18px;}
  .hero{padding:118px 0 56px;}
  .hero h1{font-size:clamp(28px,7vw,38px);}
  .hero-sub{max-width:none;font-size:16px;}
  .badge-row{gap:10px;}
  .badge{flex:1 1 132px;min-width:0;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .feature-row{grid-template-columns:minmax(0,1fr);gap:20px;padding:18px;}
  .feature-row.reverse .feature-media{order:0;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .scene-list{grid-template-columns:minmax(0,1fr);}
  .steps{grid-template-columns:minmax(0,1fr);}
  .stat-wall{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:60px 0;}
  .cta-band .wrap{flex-direction:column;align-items:flex-start;}
  .float-cta{right:16px;bottom:16px;padding:12px 18px;font-size:14px;}
  .footer-bottom{flex-direction:column;}
}
@media screen and (max-width:520px){
  body{font-size:15px;}
  .nav-shell{padding:8px 10px 8px 14px;gap:10px;}
  .brand{font-size:15px;}
  .brand-mark{width:22px;height:22px;border-radius:8px;}
  .nav-actions .btn{display:none;}
  .stat-wall{grid-template-columns:minmax(0,1fr);}
  .float-cta{padding:12px 16px;}
  .float-cta .float-text{display:none;}
  .float-cta .float-text-short{display:inline;}
}
.float-text-short{display:none;}
@media screen and (min-width:521px){
  .float-text-short{display:none;}
  .float-text{display:inline;}
}

/* roulang page: category3 */
:root{
  --grad: linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  --lime:#B4FF3C;
  --teal:#22D3B8;
  --ink:#16121F;
  --ink-soft:#5B5568;
  --paper:#FFF7F2;
  --paper-2:#F6F1EC;
  --white:#FFFFFF;
  --dark:#0F0C18;
  --dark-2:#171225;
  --line:rgba(22,18,31,.08);
  --line-dark:rgba(255,255,255,.14);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --pill:999px;
  --sh-card:0 6px 20px rgba(22,18,31,.06);
  --sh-hover:0 14px 34px rgba(22,18,31,.12);
  --sh-dark:0 18px 40px rgba(0,0,0,.4);
  --gap-section:104px;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.1em}
a{color:var(--teal);text-decoration:none;transition:color .2s ease}
a:hover{color:#FF5F35}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid #FF5F35;outline-offset:3px;border-radius:6px}

.wrap{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.section{padding:var(--gap-section) 0}
.section--tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:#7B2FF7;text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad)}
h1{font-size:clamp(30px,5vw,54px);font-weight:800;line-height:1.15;letter-spacing:-.01em}
h2{font-size:clamp(24px,3.4vw,36px);font-weight:700;line-height:1.25;margin-bottom:12px;letter-spacing:-.01em}
h3{font-size:19px;font-weight:600;line-height:1.5}
.lead{font-size:17px;color:var(--ink-soft);line-height:1.9}
.muted{color:var(--ink-soft)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:18px;left:0;right:0;z-index:90;
  display:flex;justify-content:center;padding:0 18px;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;width:100%;max-width:1200px;
  display:flex;align-items:center;gap:16px;
  padding:8px 12px 8px 20px;
  border-radius:var(--pill);
  background:rgba(255,247,242,.74);
  border:1px solid rgba(22,18,31,.06);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.is-stuck .nav-shell{
  background:rgba(255,255,255,.94);
  border-color:rgba(22,18,31,.1);
  box-shadow:0 12px 32px rgba(22,18,31,.13);
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:24px;height:24px;border-radius:8px;background:var(--grad);
  position:relative;flex:none;box-shadow:0 4px 12px rgba(123,47,247,.35);
}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:rgba(255,255,255,.9)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  display:block;padding:10px 14px;border-radius:var(--pill);
  font-size:14px;font-weight:500;color:var(--ink-soft);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(255,95,53,.09)}
.nav-links a.is-active{color:#fff;background:var(--grad);box-shadow:0 6px 16px rgba(123,47,247,.28)}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:var(--pill);border:0;cursor:pointer;
  background:var(--grad);color:#fff;font-size:14px;font-weight:600;
  white-space:nowrap;transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
  box-shadow:0 8px 20px rgba(123,47,247,.24);
}
.nav-cta:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 26px rgba(123,47,247,.32)}
.nav-cta:active{transform:translateY(0);box-shadow:0 4px 12px rgba(123,47,247,.24)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line);background:rgba(255,255,255,.9);
  color:var(--ink);font-size:16px;cursor:pointer;align-items:center;justify-content:center;
  transition:background .2s ease;
}
.nav-toggle:hover{background:#fff}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:186px 0 88px;overflow:hidden;
  background-image:
    radial-gradient(680px 420px at 88% 8%, rgba(123,47,247,.16), transparent 70%),
    radial-gradient(520px 360px at 6% 92%, rgba(255,95,53,.15), transparent 72%),
    linear-gradient(rgba(255,247,242,.93), rgba(255,247,242,.97)),
    url('/assets/images/backpic/back-2.webp');
  background-size:auto,auto,auto,cover;
  background-position:center,center,center,center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(22,18,31,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(22,18,31,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 50% 30%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(70% 60% at 50% 30%,#000,transparent 78%);
}
.hero .wrap{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:var(--ink-soft);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--ink-soft)}
.crumb a:hover{color:#7B2FF7}
.crumb .sep{opacity:.5}
.crumb .now{color:#7B2FF7;font-weight:600}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{max-width:14em}
.hero h1 .hl{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero-sub{font-size:18px;font-weight:600;color:#7B2FF7;margin-top:18px;letter-spacing:.01em}
.hero-copy{margin-top:16px;max-width:34em;color:var(--ink-soft);font-size:16px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 28px;border-radius:var(--pill);border:0;cursor:pointer;
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(123,47,247,.26)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 16px 34px rgba(123,47,247,.34)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(123,47,247,.26)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid rgba(22,18,31,.16)}
.btn-ghost:hover{color:var(--ink);background:rgba(255,95,53,.08);border-color:rgba(255,95,53,.32);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:#fff;color:var(--ink);box-shadow:0 10px 24px rgba(0,0,0,.22)}
.btn-light:hover{color:var(--ink);transform:translateY(-2px);filter:brightness(.98)}
.btn-sm{padding:11px 22px;font-size:14px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px}
.stat-pill{
  display:flex;flex-direction:column;gap:2px;
  padding:12px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.86);border:1px solid var(--line);
  box-shadow:var(--sh-card);min-width:132px;
}
.stat-pill b{font-size:22px;font-weight:800;letter-spacing:-.02em}
.stat-pill span{font-size:13px;color:var(--ink-soft)}
.hero-visual{position:relative}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/10;background:linear-gradient(140deg,#2A1B44,#FF5F35);
  box-shadow:0 26px 60px rgba(22,18,31,.22);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,12,24,0) 42%,rgba(15,12,24,.72) 100%);
}
.hero-figure figcaption{
  position:absolute;left:24px;right:24px;bottom:20px;z-index:2;
  color:#FFF7F2;font-size:14px;line-height:1.6;
}
.hero-figure figcaption strong{display:block;font-size:17px;font-weight:700;margin-bottom:4px}
.float-chip{
  position:absolute;right:-14px;top:26px;z-index:3;
  display:flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:var(--pill);
  background:rgba(15,12,24,.92);border:1px solid var(--line-dark);
  color:#FFF7F2;font-size:13px;font-weight:600;
  box-shadow:var(--sh-dark);
}
.float-chip i{color:var(--lime)}

/* ---------- 大卡 ---------- */
.big-card{
  display:grid;grid-template-columns:1.02fr 1fr;gap:0;
  border-radius:var(--r-lg);overflow:hidden;background:var(--white);
  border:1px solid var(--line);box-shadow:var(--sh-card);
  transition:box-shadow .28s ease,transform .28s ease;
}
.big-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px)}
.big-card__media{position:relative;min-height:340px;background:linear-gradient(140deg,#7B2FF7,#FF5F35)}
.big-card__media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.big-card__body{padding:44px 44px 40px;display:flex;flex-direction:column;gap:18px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--pill);
  font-size:13px;font-weight:600;
  background:rgba(34,211,184,.14);color:#128D7B;
}
.tag--solid{background:var(--grad);color:#fff}
.tag--lime{background:rgba(180,255,60,.28);color:#4C6B00}
.check-list{list-style:none;padding:0;display:grid;gap:10px}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-soft);line-height:1.7}
.check-list i{color:#22D3B8;margin-top:5px;flex:none}
.big-card__body .btn{align-self:flex-start;margin-top:6px}

/* ---------- 数据徽章网格 ---------- */
.dark-block{
  background:
    radial-gradient(700px 380px at 82% 6%, rgba(123,47,247,.28), transparent 72%),
    radial-gradient(520px 320px at 8% 96%, rgba(255,95,53,.22), transparent 74%),
    var(--dark);
  color:#FFF7F2;
  border-radius:32px;
  padding:64px 48px;
  box-shadow:0 30px 60px rgba(15,12,24,.34);
}
.dark-block h2{color:#FFF7F2}
.dark-block .lead{color:rgba(255,247,242,.72)}
.badge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px}
.badge-card{
  padding:26px 24px;border-radius:var(--r-md);
  background:rgba(255,255,255,.045);
  border:1px solid var(--line-dark);
  transition:transform .24s ease,background .24s ease,border-color .24s ease;
}
.badge-card:hover{transform:translateY(-3px);background:rgba(255,255,255,.08);border-color:rgba(180,255,60,.45)}
.badge-card b{display:block;font-size:clamp(28px,4vw,40px);font-weight:800;line-height:1.1;letter-spacing:-.02em}
.badge-card b em{font-style:normal;font-size:14px;font-weight:600;color:var(--lime);margin-left:4px}
.badge-card span{display:block;margin-top:10px;font-size:14px;color:rgba(255,247,242,.7);line-height:1.65}
.badge-card .bar{height:3px;border-radius:2px;background:var(--grad);margin-top:16px;opacity:.85}

/* ---------- 图文交替 ---------- */
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.media-row + .media-row{margin-top:72px}
.media-row.rev .media-row__media{order:2}
.media-row__media{
  border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;position:relative;
  background:linear-gradient(140deg,#F6F1EC,#FFD9CC);
  box-shadow:var(--sh-card);
}
.media-row__media img{width:100%;height:100%;object-fit:cover}
.media-row__body h3{font-size:clamp(20px,2.5vw,26px);font-weight:700;margin-bottom:14px;line-height:1.35}
.media-row__body p{color:var(--ink-soft);margin-bottom:14px}
.mini-list{list-style:none;padding:0;display:grid;gap:12px;margin-top:20px}
.mini-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink)}
.mini-list .dot{
  flex:none;width:26px;height:26px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(123,47,247,.12);color:#7B2FF7;font-size:12px;font-weight:700;
}

/* ---------- 步骤 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{
  position:relative;padding:30px 24px 26px;border-radius:var(--r-md);
  background:var(--white);border:1px solid var(--line);
  box-shadow:var(--sh-card);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:rgba(123,47,247,.28)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  color:#fff;font-weight:800;font-size:15px;margin-bottom:16px;
}
.step-card h3{font-size:17px;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--ink-soft);line-height:1.75}
.step-card::after{
  content:"";position:absolute;right:-14px;top:52px;width:14px;height:2px;
  background:linear-gradient(90deg,rgba(123,47,247,.5),rgba(255,95,53,.15));
}
.step-grid .step-card:last-child::after{display:none}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 8px 16px 18px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);position:relative;
  transition:color .2s ease,padding-left .2s ease;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:rgba(22,18,31,.12);transition:background .24s ease,transform .24s ease;
}
.faq-item.is-open .faq-q::before{background:var(--grad);transform:scaleY(1.04)}
.faq-q:hover{color:#7B2FF7;padding-left:24px}
.faq-icon{position:relative;flex:none;width:26px;height:26px;border-radius:50%;background:rgba(22,18,31,.06);transition:transform .24s ease,background .24s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);
  transform:translate(-50%,-50%);transition:opacity .2s ease,background .2s ease;
}
.faq-icon::before{width:12px;height:2px;border-radius:2px}
.faq-icon::after{width:2px;height:12px;border-radius:2px}
.faq-item.is-open .faq-icon{background:var(--grad);transform:rotate(180deg)}
.faq-item.is-open .faq-icon::before{background:#fff}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .24s ease,opacity .24s ease,padding .24s ease}
.faq-item.is-open .faq-a{max-height:320px;opacity:1;padding-bottom:20px}
.faq-a p{font-size:15px;color:var(--ink-soft);line-height:1.85;padding-left:18px;max-width:62em}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rel-card{
  display:flex;flex-direction:column;border-radius:var(--r-md);overflow:hidden;
  background:var(--white);border:1px solid var(--line);box-shadow:var(--sh-card);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;color:var(--ink);
}
.rel-card:hover{color:var(--ink);transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,95,53,.3)}
.rel-card__img{aspect-ratio:16/9;position:relative;background:linear-gradient(140deg,#7B2FF7,#22D3B8)}
.rel-card__img img{width:100%;height:100%;object-fit:cover}
.rel-card__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card__body h3{font-size:18px}
.rel-card__body p{font-size:14px;color:var(--ink-soft);line-height:1.75;flex:1}
.rel-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:#7B2FF7}
.rel-card:hover .rel-more{color:#FF5F35}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:32px;
  padding:64px 48px;color:#FFF7F2;
  background:
    radial-gradient(560px 300px at 88% 12%, rgba(180,255,60,.18), transparent 70%),
    linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  box-shadow:0 28px 60px rgba(123,47,247,.3);
}
.cta-band h2{color:#fff;max-width:20em}
.cta-band p{color:rgba(255,255,255,.88);max-width:40em;margin-top:10px}
.cta-band .btn{margin-top:28px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark-2);color:rgba(255,247,242,.72);margin-top:104px;padding:72px 0 32px}
.footer-grid{gap:32px}
.footer-col h4{color:#FFF7F2;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;display:grid;gap:10px}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,247,242,.72);line-height:1.7}
.footer-col a:hover{color:var(--lime)}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#FFF7F2;margin-bottom:14px}
.footer-brand:hover{color:#FFF7F2}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,247,242,.66);max-width:24em}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,247,242,.55);
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:80;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:var(--pill);
  background:var(--grad);color:#fff;font-size:14px;font-weight:700;
  box-shadow:0 14px 34px rgba(123,47,247,.36);
  transition:transform .24s ease,box-shadow .24s ease,filter .24s ease;
}
.float-cta:hover{color:#fff;transform:translateY(-3px) scale(1.03);filter:brightness(1.05)}
.float-cta i{color:var(--lime)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .wrap{padding:0 28px}
}
@media (max-width:1023px){
  :root{--gap-section:76px}
  .wrap{padding:0 24px}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;left:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:104px 28px 40px;margin:0;
    background:rgba(15,12,24,.97);
    transform:translateX(100%);transition:transform .3s ease;
    overflow-y:auto;border-radius:0;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{
    font-size:19px;font-weight:600;color:#FFF7F2;
    padding:18px 4px;border-bottom:1px solid var(--line-dark);border-radius:0;
    letter-spacing:.02em;
  }
  .nav-links a:hover{background:transparent;color:var(--lime)}
  .nav-links a.is-active{background:transparent;color:var(--lime);box-shadow:none}
  .nav-toggle{display:inline-flex;margin-left:auto;order:3}
  .nav-cta{display:none}
  .hero{padding:150px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{max-width:none}
  .big-card{grid-template-columns:1fr}
  .big-card__media{min-height:260px;order:-1}
  .big-card__body{padding:32px 28px 34px}
  .badge-grid{grid-template-columns:repeat(2,1fr)}
  .media-row{grid-template-columns:1fr;gap:28px}
  .media-row.rev .media-row__media{order:0}
  .step-grid{grid-template-columns:repeat(2,1fr)}
  .step-card::after{display:none}
  .rel-grid{grid-template-columns:1fr}
  .dark-block{padding:48px 28px;border-radius:26px}
  .cta-band{padding:48px 28px;border-radius:26px}
  .site-footer{margin-top:76px}
}
@media (max-width:600px){
  :root{--gap-section:58px}
  body{font-size:15px}
  .wrap{padding:0 18px}
  .site-header{top:12px;padding:0 12px}
  .nav-shell{padding:7px 8px 7px 14px}
  .brand{font-size:15px}
  .hero{padding:132px 0 58px}
  .hero h1{font-size:clamp(27px,8vw,34px)}
  .hero-sub{font-size:16px}
  .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .stat-pill{min-width:calc(50% - 6px);padding:10px 14px}
  .stat-pill b{font-size:19px}
  .float-chip{right:8px;top:12px;padding:9px 14px;font-size:12px}
  .badge-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .big-card__body{padding:26px 20px 28px}
  .dark-block{padding:36px 20px}
  .cta-band{padding:36px 20px}
  .faq-q{font-size:15px;padding-right:0}
  .float-cta{
    right:14px;bottom:14px;left:14px;justify-content:center;
    padding:13px 18px;
  }
  .site-footer{padding:52px 0 96px}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
:root{
  --brand-1:#FF5F35;
  --brand-2:#7B2FF7;
  --brand-grad:linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  --lime:#B4FF3C;
  --teal:#22D3B8;
  --ink:#16121F;
  --ink-2:#5B5568;
  --dark:#0F0C18;
  --dark-2:#171225;
  --bg:#FFF7F2;
  --bg-2:#F6F1EC;
  --card:#FFFFFF;
  --line:rgba(22,18,31,.08);
  --line-dark:rgba(255,255,255,.14);
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 6px 20px rgba(22,18,31,.06);
  --sh-2:0 14px 34px rgba(22,18,31,.12);
  --sh-dark:0 14px 34px rgba(0,0,0,.4);
  --wrap:1200px;
  --pad:32px;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-0.01em;font-style:normal;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
img{max-width:100%;display:block;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--teal);text-decoration:none;transition:color .2s ease,background .2s ease;}
a:hover{color:var(--brand-1);}
button{font-family:inherit;font-size:inherit;line-height:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:0;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(255,95,53,.22);}

/* ===================== 容器 ===================== */
.wrap{
  width:100%;
  max-width:calc(var(--wrap) + var(--pad) * 2);
  margin:0 auto;
  padding:0 var(--pad);
}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--soft{background:var(--bg-2);}
.section--dark{background:var(--dark);color:#FFF7F2;}

.section-head{max-width:760px;margin-bottom:48px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand-1);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand-grad);}
.section-head h2{font-size:clamp(24px,3.4vw,36px);margin-bottom:12px;}
.section-head p{color:var(--ink-2);font-size:16px;max-width:640px;}
.section--dark .section-head p{color:rgba(255,247,242,.72);}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease,filter .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background-image:linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  color:#fff;
  box-shadow:0 10px 24px rgba(123,47,247,.24);
}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-2px);color:#fff;box-shadow:0 14px 30px rgba(123,47,247,.3);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(123,47,247,.2);}
.btn-ghost{background:transparent;border-color:rgba(255,247,242,.34);color:#FFF7F2;}
.btn-ghost:hover{background:rgba(255,95,53,.18);border-color:rgba(255,95,53,.62);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-line{background:transparent;border-color:rgba(22,18,31,.16);color:var(--ink);}
.btn-line:hover{background:rgba(255,95,53,.08);border-color:rgba(255,95,53,.42);color:var(--brand-1);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-lg{padding:17px 36px;font-size:16px;}

/* ===================== 标签 / 徽章 ===================== */
.pill-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:rgba(255,95,53,.12);color:var(--brand-1);
}
.pill-tag--lime{background:rgba(180,255,60,.16);color:#8BD31B;}
.pill-tag--dark{background:rgba(255,255,255,.08);color:#FFF7F2;}
.tag{display:inline-block;padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;background:rgba(34,211,184,.14);color:#128A78;}

/* ===================== 顶部导航 ===================== */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:120;padding:0 16px;pointer-events:none;}
.nav-shell{
  pointer-events:auto;
  max-width:var(--wrap);margin:0 auto;
  display:flex;align-items:center;gap:20px;
  height:64px;padding:0 10px 0 20px;
  border-radius:var(--r-pill);
  background:rgba(255,247,242,.74);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(22,18,31,.06);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.nav-shell.is-scrolled{
  background:rgba(255,247,242,.95);
  box-shadow:0 12px 32px rgba(22,18,31,.13);
  border-color:rgba(22,18,31,.1);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:-.01em;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:28px;height:28px;border-radius:9px;
  background-image:linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  box-shadow:0 6px 14px rgba(123,47,247,.28);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 8px auto auto;width:8px;height:8px;border-radius:3px;background:rgba(255,247,242,.85);
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  padding:9px 15px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(22,18,31,.05);}
.nav-links a.is-active{color:var(--brand-1);background:rgba(255,95,53,.1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:50%;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  background:rgba(22,18,31,.05);
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:110;
  background:rgba(15,12,24,.97);
  backdrop-filter:blur(10px);
  display:flex;flex-direction:column;justify-content:center;
  padding:96px 32px 48px;
  opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;}
.mobile-drawer a{
  display:block;padding:16px 0;
  font-size:20px;font-weight:600;letter-spacing:.02em;
  color:#FFF7F2;border-bottom:1px solid rgba(255,255,255,.09);
}
.mobile-drawer a.is-active{color:var(--lime);}
.mobile-drawer a:hover{color:var(--brand-1);}
.mobile-drawer .btn{margin-top:28px;width:100%;}

/* ===================== Hero ===================== */
.hero{
  position:relative;overflow:hidden;
  padding:150px 0 96px;
  background:var(--dark);
  color:#FFF7F2;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:
    radial-gradient(760px 420px at 12% 6%,rgba(255,95,53,.34),transparent 68%),
    radial-gradient(680px 420px at 88% 82%,rgba(123,47,247,.36),transparent 70%),
    linear-gradient(180deg,rgba(15,12,24,.94) 0%,rgba(15,12,24,.9) 55%,rgba(15,12,24,.98) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover,cover,cover,cover;
  background-position:center;
}
.hero-inner{position:relative;z-index:2;}
.hero-grid{align-items:center;}
.hero-copy{padding-right:24px;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:rgba(255,247,242,.6);margin-bottom:20px;}
.crumbs a{color:rgba(255,247,242,.72);}
.crumbs a:hover{color:#fff;}
.crumbs .crumb-cur{color:var(--brand-1);font-weight:600;}
.hero h1{
  font-size:clamp(30px,5vw,54px);font-weight:800;line-height:1.15;letter-spacing:-.01em;
  margin:18px 0 16px;color:#FFF7F2;
}
.hero h1 em{font-style:normal;background-image:linear-gradient(135deg,#FF5F35,#B4FF3C);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:19px;font-weight:600;color:var(--lime);margin-bottom:14px;}
.hero-desc{font-size:16px;line-height:1.9;color:rgba(255,247,242,.72);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;}
.hero-badges li{
  display:flex;align-items:baseline;gap:6px;
  padding:10px 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(180,255,60,.28);
  font-size:13px;color:rgba(255,247,242,.78);
}
.hero-badges b{font-size:20px;font-weight:800;color:var(--lime);}
.hero-media{
  margin:0;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-dark);
  box-shadow:var(--sh-dark);
  background:linear-gradient(135deg,#FF5F35,#7B2FF7);
}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ===================== 卡片 ===================== */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);height:100%;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(255,95,53,.22);}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{color:var(--ink-2);font-size:15px;line-height:1.8;}
.card-ico{
  width:46px;height:46px;border-radius:14px;margin-bottom:18px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,95,53,.1);color:var(--brand-1);font-weight:800;font-size:19px;
}
.card--accent{background-image:linear-gradient(135deg,rgba(255,95,53,.06),rgba(123,47,247,.08));}
.card-media{border-radius:var(--r-sm);overflow:hidden;margin-bottom:18px;background:linear-gradient(135deg,#FF5F35,#7B2FF7);}
.card-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;font-size:13px;color:var(--ink-2);}

/* ===================== 定义区 ===================== */
.intro-grid{align-items:flex-start;}
.intro-text p{font-size:16.5px;line-height:1.95;color:var(--ink-2);}
.intro-text p strong{color:var(--ink);font-weight:700;}
.side-note{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--sh-1);
}
.side-note h3{font-size:18px;margin-bottom:16px;}
.side-note ul li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--ink-2);
}
.side-note ul li:last-child{border-bottom:0;padding-bottom:0;}
.side-note .dot{flex:0 0 8px;height:8px;margin-top:10px;border-radius:50%;background-image:var(--brand-grad);}

/* ===================== 步骤时间线 ===================== */
.steps{margin-top:52px;position:relative;}
.step{position:relative;padding-left:68px;padding-bottom:40px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:23px;top:50px;bottom:0;width:2px;
  background-image:linear-gradient(180deg,rgba(255,95,53,.5),rgba(123,47,247,.12));
}
.step:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;color:#fff;
  background-image:linear-gradient(135deg,#FF5F35,#7B2FF7);
  box-shadow:0 10px 22px rgba(123,47,247,.26);
}
.step-body h3{font-size:19px;margin-bottom:8px;}
.step-body p{color:var(--ink-2);font-size:15.5px;max-width:680px;}
.step-note{display:inline-flex;align-items:center;gap:8px;margin-top:10px;font-size:13px;font-weight:600;color:#128A78;}
.step-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);}

/* ===================== 今日时段轴 ===================== */
.ts-track{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:56px;}
.ts-item{position:relative;padding-top:40px;}
.ts-item::after{
  content:"";position:absolute;top:12px;left:26px;right:-26px;height:2px;
  background-image:linear-gradient(90deg,rgba(255,95,53,.65),rgba(123,47,247,.3));
}
.ts-item:last-child::after{display:none;}
.ts-dot{
  position:absolute;top:1px;left:0;width:24px;height:24px;border-radius:50%;
  background-image:linear-gradient(135deg,#FF5F35,#7B2FF7);
  box-shadow:0 0 0 7px rgba(255,95,53,.14);
}
.ts-time{font-size:24px;font-weight:800;color:var(--lime);letter-spacing:-.01em;}
.ts-title{font-size:17px;font-weight:700;margin:6px 0 8px;color:#FFF7F2;}
.ts-desc{font-size:14.5px;line-height:1.8;color:rgba(255,247,242,.7);}

/* ===================== 数据徽章 ===================== */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px;}
.stat{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 22px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.stat:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.stat b{display:block;font-size:36px;font-weight:800;letter-spacing:-.02em;background-image:linear-gradient(135deg,#FF5F35,#7B2FF7);-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat span{display:block;font-size:13px;color:var(--ink-2);margin-top:6px;}
.stat .unit{font-size:13px;font-weight:600;color:var(--ink-2);margin-left:4px;}

/* ===================== 图文交替 ===================== */
.split{align-items:center;margin-bottom:64px;}
.split:last-child{margin-bottom:0;}
.split-media{margin:0;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--line);background:linear-gradient(135deg,#FF5F35,#7B2FF7);}
.split-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.split-copy h3{font-size:clamp(20px,2.6vw,26px);margin-bottom:14px;}
.split-copy p{color:var(--ink-2);font-size:16px;line-height:1.9;}
.check-list{margin-top:18px;}
.check-list li{display:flex;gap:12px;padding:8px 0;font-size:15px;color:var(--ink-2);}
.check-list li::before{
  content:"✓";flex:0 0 22px;height:22px;margin-top:4px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:#fff;
  background-image:linear-gradient(135deg,#FF5F35,#7B2FF7);
}
.quote-row{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:44px;}
.quote{
  background:var(--card);border:1px solid var(--line);border-left:3px solid transparent;
  border-image:linear-gradient(180deg,#FF5F35,#7B2FF7) 1;
  border-radius:var(--r-md);padding:26px;box-shadow:var(--sh-1);
  border-image-slice:1;
}
.quote p{font-size:15.5px;color:var(--ink-2);line-height:1.9;}
.quote .who{display:flex;align-items:center;gap:12px;margin-top:18px;font-size:13.5px;font-weight:600;color:var(--ink);}
.quote .ava{
  width:36px;height:36px;border-radius:50%;overflow:hidden;flex:0 0 36px;
  background-image:linear-gradient(135deg,#FF5F35,#7B2FF7);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:800;
}
.quote .ava img{width:100%;height:100%;object-fit:cover;}

/* ===================== FAQ ===================== */
.faq-list{margin-top:40px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  position:relative;width:100%;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px 20px 20px;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:15px;bottom:15px;width:3px;border-radius:3px;
  background:rgba(22,18,31,.1);
  transition:background .25s ease,top .25s ease,bottom .25s ease;
}
.faq-item.is-open .faq-q::before{background-image:linear-gradient(180deg,#FF5F35,#7B2FF7);top:9px;bottom:9px;}
.faq-q:hover{color:var(--brand-1);}
.faq-ico{position:relative;flex:0 0 22px;height:22px;}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background-image:linear-gradient(135deg,#FF5F35,#7B2FF7);border-radius:2px;transition:transform .25s ease;}
.faq-ico::before{left:0;top:10px;width:22px;height:2px;}
.faq-ico::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.is-open .faq-ico::after{transform:scaleY(0) rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a-inner{padding:0 48px 24px 20px;color:var(--ink-2);font-size:15.5px;line-height:1.85;}

/* ===================== 相关分类 ===================== */
.rel-card{
  display:block;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);color:var(--ink);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(255,95,53,.28);color:var(--ink);}
.rel-card h3{font-size:18px;margin-bottom:8px;}
.rel-card p{font-size:14.5px;color:var(--ink-2);line-height:1.8;margin-bottom:0;}
.rel-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13.5px;font-weight:600;color:var(--brand-1);}

/* ===================== CTA 通栏 ===================== */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  padding:64px 44px;text-align:center;color:#fff;
  background-image:linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  box-shadow:0 24px 60px rgba(123,47,247,.28);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(420px 220px at 18% 0%,rgba(255,255,255,.22),transparent 70%),
                   radial-gradient(420px 260px at 88% 100%,rgba(180,255,60,.18),transparent 72%);
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(24px,3.4vw,36px);margin-bottom:14px;color:#fff;}
.cta-band p{color:rgba(255,255,255,.85);max-width:620px;margin:0 auto 30px;}
.cta-band .btn-line{background:rgba(255,255,255,.96);color:var(--brand-1);border-color:transparent;}
.cta-band .btn-line:hover{background:#fff;color:var(--brand-2);}

/* ===================== 浮动 CTA ===================== */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:100;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;color:#fff;
  background-image:linear-gradient(135deg,#FF5F35,#7B2FF7);
  box-shadow:0 14px 32px rgba(123,47,247,.36);
  transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;
}
.float-cta:hover{color:#fff;transform:translateY(-3px) scale(1.02);filter:brightness(1.06);box-shadow:0 18px 40px rgba(123,47,247,.44);}
.float-cta-ico{font-size:16px;line-height:1;}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--dark);color:rgba(255,247,242,.72);padding:80px 0 32px;margin-top:96px;}
.footer-grid{margin-bottom:56px;}
.footer-col{padding-bottom:24px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#FFF7F2;margin-bottom:16px;}
.footer-brand:hover{color:#fff;}
.footer-col h4{font-size:15px;font-weight:700;color:#FFF7F2;margin-bottom:18px;letter-spacing:.02em;}
.footer-col p{font-size:14.5px;line-height:1.85;color:rgba(255,247,242,.62);max-width:320px;}
.footer-col ul li{margin-bottom:12px;font-size:14.5px;}
.footer-col ul li a{color:rgba(255,247,242,.72);}
.footer-col ul li a:hover{color:var(--lime);}
.footer-col ul li span{color:rgba(255,247,242,.62);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:rgba(255,247,242,.5);
}

/* ===================== 响应式 ===================== */
@media (max-width:1279px){
  :root{--pad:28px;}
  .nav-links a{padding:9px 12px;font-size:14px;}
}
@media (max-width:1023px){
  :root{--pad:24px;}
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions .btn{display:none;}
  .hero{padding:130px 0 76px;}
  .hero-copy{padding-right:0;margin-bottom:40px;}
  .ts-track{grid-template-columns:repeat(2,1fr);gap:32px 26px;}
  .ts-item:nth-child(2)::after{display:none;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .quote-row{grid-template-columns:1fr;}
  .split-copy{margin-top:26px;}
  .split{margin-bottom:48px;}
  .cta-band{padding:52px 28px;}
  .site-footer{padding:64px 0 28px;margin-top:72px;}
}
@media (max-width:767px){
  :root{--pad:18px;}
  body{font-size:15px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:34px;}
  .hero{padding:118px 0 64px;}
  .hero-sub{font-size:17px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-badges li{flex:1 1 calc(50% - 6px);justify-content:center;}
  .ts-track{grid-template-columns:1fr;gap:0;}
  .ts-item{padding:0 0 32px 40px;}
  .ts-item::after{top:26px;left:12px;right:auto;bottom:0;width:2px;height:auto;}
  .ts-item:last-child::after{display:none;}
  .ts-dot{top:4px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .stat b{font-size:28px;}
  .steps{margin-top:38px;}
  .step{padding-left:58px;padding-bottom:32px;}
  .step-num{width:42px;height:42px;border-radius:14px;font-size:16px;}
  .step::before{left:20px;top:44px;}
  .faq-a-inner{padding:0 20px 22px 20px;}
  .faq-q{padding:18px 4px 18px 18px;font-size:15.5px;}
  .float-cta{right:16px;bottom:16px;padding:14px 18px;}
  .float-cta span:not(.float-cta-ico){display:none;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:479px){
  .hero h1{font-size:30px;}
  .hero-badges li{flex:1 1 100%;}
  .stat-grid{grid-template-columns:1fr;}
  .cta-band{border-radius:24px;padding:44px 20px;}
}

/* roulang page: category4 */
:root{
  --brand-1:#FF5F35;
  --brand-2:#7B2FF7;
  --brand-grad:linear-gradient(135deg,#FF5F35 0%,#7B2FF7 100%);
  --brand-grad-soft:linear-gradient(135deg,rgba(255,95,53,.14) 0%,rgba(123,47,247,.14) 100%);
  --lime:#B4FF3C;
  --teal:#22D3B8;
  --ink:#16121F;
  --ink-soft:#5B5568;
  --paper:#FFF7F2;
  --paper-2:#F6F1EC;
  --card:#FFFFFF;
  --dark:#0F0C18;
  --dark-2:#171225;
  --line:rgba(22,18,31,.08);
  --line-strong:rgba(22,18,31,.16);
  --line-dark:rgba(255,255,255,.14);
  --on-dark:#FFF7F2;
  --on-dark-soft:rgba(255,247,242,.72);
  --r-xl:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 6px 20px rgba(22,18,31,.06);
  --sh-2:0 14px 34px rgba(22,18,31,.12);
  --sh-dark:0 18px 40px rgba(0,0,0,.42);
  --wrap:1200px;
  --sec-y:104px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--teal);text-decoration:none;transition:color .18s ease, opacity .18s ease;}
a:hover{color:var(--brand-1);}
button{font-family:inherit;border:0;background:none;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;color:var(--ink);letter-spacing:-.01em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--sec-y) 0;}
.section--tight{padding:72px 0;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--brand-2);
  text-transform:none;
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;border-radius:2px;
  background:var(--brand-grad);
}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,3.4vw,36px);font-weight:700;}
.section-head p{margin-top:14px;color:var(--ink-soft);font-size:16px;}
.gradient-text{
  background:var(--brand-grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease, filter .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand-grad);
  color:#fff;
  box-shadow:0 10px 24px rgba(123,47,247,.24);
}
.btn-primary:hover{
  color:#fff;
  filter:brightness(1.06);
  transform:translateY(-2px);
  box-shadow:0 16px 32px rgba(123,47,247,.3);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(123,47,247,.24);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-dark);
  color:var(--on-dark);
}
.btn-ghost:hover{
  color:var(--on-dark);
  background:rgba(255,255,255,.09);
  transform:translateY(-2px);
}
.btn-outline{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--ink);
}
.btn-outline:hover{
  color:var(--ink);
  background:rgba(123,47,247,.08);
  transform:translateY(-2px);
}
.btn-block{width:100%;}

/* 导航 */
.site-header{
  position:fixed;
  top:18px;left:0;right:0;
  z-index:60;
  padding:0 24px;
  pointer-events:none;
}
.nav-pill{
  pointer-events:auto;
  max-width:var(--wrap);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:24px;
  height:64px;
  padding:0 12px 0 20px;
  border-radius:var(--r-pill);
  background:rgba(255,247,242,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(22,18,31,.06);
  transition:background .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.site-header.is-scrolled .nav-pill{
  background:rgba(255,247,242,.92);
  border-color:rgba(22,18,31,.1);
  box-shadow:0 12px 30px rgba(22,18,31,.12);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.01em;
  flex-shrink:0;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:28px;height:28px;
  border-radius:9px;
  background:var(--brand-grad);
  box-shadow:0 6px 14px rgba(123,47,247,.28);
  position:relative;
  flex-shrink:0;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:8px;
  border-radius:4px;
  background:rgba(255,247,242,.92);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
  flex-wrap:nowrap;
}
.nav-links a{
  display:inline-block;
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-soft);
  transition:background .18s ease, color .18s ease;
}
.nav-links a:hover{
  color:var(--ink);
  background:rgba(22,18,31,.05);
}
.nav-links a.is-active{
  color:var(--brand-2);
  background:var(--brand-grad-soft);
  font-weight:600;
}
.nav-cta{
  flex-shrink:0;
  padding:11px 22px;
  border-radius:var(--r-pill);
  background:var(--brand-grad);
  color:#fff;
  font-size:14.5px;
  font-weight:600;
  transition:transform .18s ease, filter .18s ease, box-shadow .18s ease;
  box-shadow:0 8px 20px rgba(123,47,247,.22);
}
.nav-cta:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  margin-left:auto;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--ink);
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  pointer-events:auto;
  max-width:var(--wrap);
  margin:10px auto 0;
  border-radius:var(--r-xl);
  background:rgba(255,247,242,.97);
  backdrop-filter:blur(16px);
  border:1px solid rgba(22,18,31,.08);
  box-shadow:var(--sh-2);
  padding:16px;
  display:none;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;
  padding:15px 14px;
  border-radius:var(--r-sm);
  font-size:17px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--ink);
}
.mobile-drawer a.is-active{color:var(--brand-2);background:var(--brand-grad-soft);}
.mobile-drawer .btn{margin-top:12px;font-size:16px;}

/* 面包屑 */
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:500;
  color:rgba(255,247,242,.62);
  padding-top:132px;
  margin-bottom:26px;
}
.breadcrumb a{color:rgba(255,247,242,.72);}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb span.sep{opacity:.5;}
.breadcrumb .current{
  color:var(--lime);
  font-weight:600;
  max-width:56vw;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* Hero */
.hero{
  position:relative;
  background:var(--dark);
  color:var(--on-dark);
  overflow:hidden;
  padding-bottom:96px;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(15,12,24,.82) 0%,rgba(15,12,24,.92) 60%,#0F0C18 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.9;
}
.hero::after{
  content:"";
  position:absolute;
  width:760px;height:760px;
  right:-220px;top:-280px;
  background:radial-gradient(circle,rgba(123,47,247,.42) 0%,rgba(255,95,53,.18) 42%,rgba(15,12,24,0) 70%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(30px,4.4vw,50px);
  font-weight:800;
  line-height:1.16;
  color:var(--on-dark);
  letter-spacing:-.015em;
}
.hero .lede{
  margin-top:20px;
  font-size:17px;
  line-height:1.9;
  color:var(--on-dark-soft);
  max-width:560px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:34px;
}
.hero-badge{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:14px 18px;
  border-radius:var(--r-md);
  background:rgba(255,247,242,.06);
  border:1px solid rgba(180,255,60,.28);
  backdrop-filter:blur(6px);
  min-width:118px;
}
.hero-badge b{
  font-size:26px;
  font-weight:800;
  line-height:1.1;
  color:var(--lime);
}
.hero-badge span{
  font-size:12.5px;
  color:var(--on-dark-soft);
  font-weight:500;
}
.hero-media{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,#241a3a 0%,#3a1f31 100%);
  border:1px solid var(--line-dark);
  box-shadow:var(--sh-dark);
}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
}
.hero-media figcaption{
  position:absolute;
  left:16px;bottom:16px;
  right:16px;
  font-size:13px;
  font-weight:500;
  color:rgba(255,247,242,.9);
  background:rgba(15,12,24,.62);
  border:1px solid var(--line-dark);
  border-radius:var(--r-sm);
  padding:8px 12px;
  backdrop-filter:blur(8px);
}

/* 定位说明区 */
.intro-grid{
  display:grid;
  grid-template-columns:1.35fr .65fr;
  gap:48px;
  align-items:start;
}
.intro-copy h2{font-size:clamp(24px,3.2vw,34px);margin-bottom:20px;}
.intro-copy p{color:var(--ink-soft);font-size:16px;line-height:1.9;}
.intro-copy strong{color:var(--ink);font-weight:600;}
.chip-list{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.chip{
  display:inline-flex;
  align-items:center;
  padding:7px 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  color:#0d3b32;
  background:rgba(34,211,184,.18);
  border:1px solid rgba(34,211,184,.4);
}
.index-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:26px;
  box-shadow:var(--sh-1);
}
.index-card h3{
  font-size:16px;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:10px;
}
.index-card h3::before{
  content:"";
  width:8px;height:8px;
  border-radius:3px;
  background:var(--brand-grad);
}
.index-card ol{counter-reset:idx;}
.index-card ol li{
  counter-increment:idx;
  position:relative;
  padding:11px 0 11px 40px;
  font-size:14.5px;
  color:var(--ink-soft);
  border-bottom:1px dashed var(--line);
}
.index-card ol li:last-child{border-bottom:0;}
.index-card ol li::before{
  content:counter(idx,decimal-leading-zero);
  position:absolute;
  left:0;top:11px;
  font-size:13px;
  font-weight:800;
  color:var(--brand-2);
  background:var(--brand-grad-soft);
  border-radius:8px;
  padding:2px 8px;
}

/* 问答长文 + 侧栏 */
.qa-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:56px;
  align-items:start;
}
.qa-stream{display:flex;flex-direction:column;gap:28px;}
.qa-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:30px 32px;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s ease, transform .2s ease;
}
.qa-item:hover{
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
}
.qa-item h3{
  font-size:20px;
  font-weight:600;
  display:flex;
  gap:12px;
  align-items:flex-start;
  margin-bottom:14px;
}
.qa-item h3 .q-tag{
  flex-shrink:0;
  font-size:12.5px;
  font-weight:800;
  letter-spacing:.04em;
  color:#fff;
  background:var(--brand-grad);
  border-radius:8px;
  padding:3px 9px;
  margin-top:4px;
}
.qa-item p{color:var(--ink-soft);font-size:15.5px;line-height:1.9;}
.qa-item ul{
  margin:14px 0 0;
  display:flex;
  flex-direction:column;
  gap:9px;
}
.qa-item ul li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:var(--ink-soft);
}
.qa-item ul li::before{
  content:"";
  position:absolute;
  left:2px;top:11px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--brand-grad);
}
.note-strip{
  margin-top:18px;
  padding:16px 18px;
  border-left:3px solid transparent;
  border-image:var(--brand-grad) 1;
  background:var(--paper-2);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:14.5px;
  color:var(--ink-soft);
}

/* 侧栏 */
.side-rail{
  position:sticky;
  top:104px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.rail-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:24px;
  box-shadow:var(--sh-1);
}
.rail-card h4{
  font-size:15.5px;
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:9px;
}
.rail-card h4::before{
  content:"";
  width:6px;height:16px;
  border-radius:3px;
  background:var(--brand-grad);
}
.rail-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.rail-list li{
  font-size:14px;
  color:var(--ink-soft);
  display:flex;
  gap:10px;
  align-items:flex-start;
  line-height:1.7;
}
.rail-list li b{
  flex-shrink:0;
  width:20px;height:20px;
  border-radius:6px;
  background:rgba(180,255,60,.28);
  color:#25410a;
  font-size:12px;
  font-weight:800;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:3px;
}
.rail-card--dark{
  background:var(--dark-2);
  border:1px solid var(--line-dark);
  box-shadow:var(--sh-dark);
}
.rail-card--dark h4{color:var(--on-dark);}
.rail-card--dark p{color:var(--on-dark-soft);font-size:14px;line-height:1.8;}
.rail-card--dark .rail-flag{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  color:#0F0C18;
  background:var(--lime);
  border-radius:var(--r-pill);
  padding:3px 10px;
  margin-bottom:12px;
}

/* 要点卡组 */
.focus-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.focus-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.focus-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(123,47,247,.28);
}
.focus-icon{
  width:44px;height:44px;
  border-radius:14px;
  background:var(--brand-grad-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:19px;
  font-weight:800;
  color:var(--brand-2);
}
.focus-card h3{font-size:17px;font-weight:600;}
.focus-card p{font-size:14.5px;color:var(--ink-soft);line-height:1.8;}
.focus-card .tag{
  margin-top:auto;
  align-self:flex-start;
  font-size:12.5px;
  font-weight:600;
  color:var(--brand-2);
  background:var(--brand-grad-soft);
  border-radius:var(--r-pill);
  padding:4px 12px;
}

/* 数据徽章网格 */
.stat-band{
  background:var(--dark);
  color:var(--on-dark);
  border-radius:var(--r-xl);
  padding:52px 40px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
  position:relative;
  overflow:hidden;
}
.stat-band::after{
  content:"";
  position:absolute;
  width:520px;height:520px;
  right:-180px;bottom:-260px;
  background:radial-gradient(circle,rgba(255,95,53,.28) 0%,rgba(15,12,24,0) 68%);
}
.stat-item{position:relative;z-index:2;}
.stat-item b{
  display:block;
  font-size:34px;
  font-weight:800;
  line-height:1.1;
  background:linear-gradient(135deg,#B4FF3C 0%,#22D3B8 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-item span{
  display:block;
  margin-top:8px;
  font-size:13.5px;
  color:var(--on-dark-soft);
  line-height:1.7;
}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  text-align:left;
  min-height:60px;
  padding:18px 0 18px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
  position:relative;
  transition:color .2s ease;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:3px;
  background:var(--line-strong);
  transition:background .2s ease, top .2s ease, bottom .2s ease;
}
.faq-item.is-open .faq-q::before{
  background:var(--brand-grad);
  top:10px;bottom:10px;
}
.faq-q:hover{color:var(--brand-2);}
.faq-icon{
  position:relative;
  width:22px;height:22px;
  flex-shrink:0;
  border-radius:50%;
  border:1px solid var(--line-strong);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-soft);
  border-radius:2px;
  transition:transform .2s ease, background .2s ease;
}
.faq-icon::before{width:10px;height:2px;left:5px;top:9.5px;}
.faq-icon::after{width:2px;height:10px;left:9.5px;top:5px;}
.faq-item.is-open .faq-icon{border-color:var(--brand-2);}
.faq-item.is-open .faq-icon::before{background:var(--brand-2);}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);background:var(--brand-2);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease;
}
.faq-a-inner{
  padding:0 40px 22px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-soft);
}

/* 相关分类 */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  display:flex;
  gap:16px;
  align-items:center;
  padding:18px;
  border-radius:var(--r-md);
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.related-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  border-color:rgba(34,211,184,.4);
}
.related-thumb{
  width:88px;height:66px;
  flex-shrink:0;
  border-radius:var(--r-sm);
  overflow:hidden;
  background:linear-gradient(135deg,#f0e3ff 0%,#ffe6dc 100%);
}
.related-thumb img{width:100%;height:100%;object-fit:cover;}
.related-card h3{
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:6px;
}
.related-card p{
  font-size:13px;
  color:var(--ink-soft);
  line-height:1.7;
  margin:0;
}
.related-card:hover h3{color:var(--brand-2);}

/* CTA 通栏 */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--dark);
  color:var(--on-dark);
  padding:64px 48px;
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(255,95,53,.32) 0%,rgba(123,47,247,.34) 100%);
}
.cta-band::after{
  content:"";
  position:absolute;
  width:600px;height:600px;
  left:50%;top:-320px;
  transform:translateX(-50%);
  background:radial-gradient(circle,rgba(180,255,60,.22) 0%,rgba(15,12,24,0) 66%);
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{
  font-size:clamp(24px,3.4vw,36px);
  color:var(--on-dark);
  margin-bottom:16px;
}
.cta-band p{
  max-width:620px;
  margin:0 auto 30px;
  color:var(--on-dark-soft);
  font-size:16px;
}
.cta-actions{
  display:flex;
  gap:14px;
  justify-content:center;
  flex-wrap:wrap;
}
.cta-note{
  margin-top:20px;
  font-size:13px;
  color:rgba(255,247,242,.62);
}

/* 页脚 */
.site-footer{
  background:var(--dark);
  color:var(--on-dark-soft);
  padding:76px 0 30px;
  margin-top:96px;
}
.footer-grid{gap:32px;}
.footer-col h4{
  color:var(--on-dark);
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-col p{font-size:14px;line-height:1.8;color:var(--on-dark-soft);}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  color:var(--on-dark);
  margin-bottom:16px;
}
.footer-brand:hover{color:var(--on-dark);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul li{font-size:14px;color:var(--on-dark-soft);}
.footer-col ul a{color:var(--on-dark-soft);}
.footer-col ul a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid var(--line-dark);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,247,242,.56);
}

/* 浮动 CTA */
.float-cta{
  position:fixed;
  right:26px;
  bottom:26px;
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:14px 26px;
  border-radius:var(--r-pill);
  background:var(--brand-grad);
  color:#fff;
  font-size:15px;
  font-weight:600;
  box-shadow:0 14px 32px rgba(123,47,247,.36);
  opacity:0;
  transform:translateY(16px);
  pointer-events:none;
  transition:opacity .28s ease, transform .28s ease, filter .2s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);}
.float-cta.is-boost{transform:scale(1.05);}
.float-cta .dot{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 4px rgba(180,255,60,.24);
}

/* 响应式 */
@media screen and (max-width:1279px){
  :root{--sec-y:88px;}
  .focus-grid{grid-template-columns:repeat(2,1fr);}
  .nav-links a{padding:9px 11px;font-size:14px;}
}
@media screen and (max-width:1023px){
  :root{--sec-y:72px;}
  .wrap{padding:0 24px;}
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .breadcrumb{padding-top:120px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .qa-layout{grid-template-columns:1fr;gap:36px;}
  .side-rail{position:static;}
  .stat-band{grid-template-columns:repeat(2,1fr);padding:40px 28px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{padding:48px 28px;}
  .site-footer{padding:60px 0 26px;margin-top:72px;}
}
@media screen and (max-width:767px){
  body{font-size:15px;}
  .wrap{padding:0 18px;}
  .site-header{top:12px;padding:0 14px;}
  .nav-pill{height:58px;padding:0 10px 0 16px;gap:12px;}
  .brand{font-size:16px;}
  .hero{padding-bottom:64px;}
  .breadcrumb{padding-top:104px;font-size:12px;}
  .hero .lede{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-badges{gap:10px;}
  .hero-badge{flex:1 1 calc(50% - 5px);min-width:0;padding:12px 14px;}
  .hero-badge b{font-size:22px;}
  .focus-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:20px;padding:34px 22px;border-radius:var(--r-md);}
  .stat-item b{font-size:28px;}
  .qa-item{padding:22px 20px;border-radius:var(--r-md);}
  .qa-item h3{font-size:17.5px;}
  .faq-q{font-size:15.5px;padding-left:16px;min-height:54px;}
  .faq-a-inner{padding:0 18px 20px 16px;}
  .cta-band{border-radius:var(--r-md);padding:40px 22px;}
  .related-card{padding:14px;}
  .related-thumb{width:74px;height:56px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .float-cta{
    right:14px;left:14px;bottom:14px;
    justify-content:center;
    padding:14px 20px;
  }
}
@media screen and (max-width:479px){
  .hero-badge{flex:1 1 100%;}
  .stat-band{grid-template-columns:1fr;}
}