/* roulang page: index */
:root{
  --ink-900:#0A0913;
  --ink-800:#14122A;
  --ink-700:#1E1B3A;
  --neon-cyan:#2FE3C4;
  --neon-violet:#7C5CFF;
  --neon-pink:#FF4D8D;
  --grad-brand:linear-gradient(135deg,#2FE3C4 0%,#7C5CFF 55%,#FF4D8D 100%);
  --paper:#F5F6FB;
  --card:#FFFFFF;
  --line:#E6E8F2;
  --soft:#EEF0F8;
  --t1:#14122A;
  --t2:#4A4A66;
  --t3:#8A8AA3;
  --dtext:#FFFFFF;
  --dtext2:#C9C6E0;
  --ok:#1FC08A;
  --warn:#FFB020;
  --err:#FF5A5A;
  --r-xl:22px;
  --r-md:16px;
  --r-sm:14px;
  --sh-1:0 8px 24px rgba(20,18,42,.06),0 1px 2px rgba(20,18,42,.04);
  --sh-2:0 16px 40px rgba(20,18,42,.12),0 2px 6px rgba(20,18,42,.06);
  --glow-cyan:0 0 24px rgba(47,227,196,.25);
  --glow-violet:0 0 28px rgba(124,92,255,.32);
  --gap-sec:84px;
  --gap-sec-s:52px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--neon-cyan);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:"DIN Alternate","Bahnschrift","SF Mono",ui-monospace,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,9,19,.93);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--grad-brand);opacity:.85;
}
.nav-bar{display:flex;align-items:center;gap:28px;height:70px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand__mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--grad-brand);
  position:relative;flex:0 0 auto;
  box-shadow:var(--glow-violet);
}
.brand__mark::before{
  content:"";position:absolute;inset:9px 9px auto 9px;height:4px;border-radius:2px;
  background:rgba(10,9,19,.72);
}
.brand__mark::after{
  content:"";position:absolute;left:9px;right:14px;bottom:9px;height:4px;border-radius:2px;
  background:rgba(10,9,19,.45);
}
.brand__text{color:#fff;font-size:18px;font-weight:800;letter-spacing:-.02em;line-height:1;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:6px;}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;height:38px;padding:0 15px;
  border-radius:10px;color:var(--dtext2);font-size:15px;font-weight:500;
}
.nav-links a:hover{color:var(--neon-cyan);text-shadow:0 0 10px rgba(47,227,196,.55);}
.nav-links a.is-active{color:#fff;font-weight:700;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:-1px;height:2px;
  border-radius:2px;background:var(--grad-brand);box-shadow:var(--glow-cyan);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{
  background:var(--grad-brand);color:#0A0913;
  box-shadow:0 6px 20px rgba(124,92,255,.32);
}
.btn--primary:hover{transform:translateY(-3px);filter:brightness(1.08);box-shadow:0 12px 28px rgba(124,92,255,.42),var(--glow-cyan);}
.btn--ghost{
  background:transparent;color:#fff;border:1px solid rgba(47,227,196,.55);
}
.btn--ghost:hover{background:rgba(47,227,196,.12);transform:translateY(-3px);box-shadow:var(--glow-cyan);}
.btn--text{
  height:auto;padding:0;color:var(--neon-violet);border-radius:0;font-weight:700;
  background:linear-gradient(currentColor,currentColor) left bottom/0 1px no-repeat;
  transition:background-size .28s ease,color .22s ease;
}
.btn--text:hover{background-size:100% 1px;color:var(--neon-pink);}
.btn:active{transform:scale(.98);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid rgba(201,198,224,.28);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  font-size:12px;font-weight:700;line-height:1;white-space:nowrap;
}
.badge--cyan{color:var(--neon-cyan);background:rgba(47,227,196,.12);border:1px solid rgba(47,227,196,.45);}
.badge--violet{color:#B8A6FF;background:rgba(124,92,255,.14);border:1px solid rgba(124,92,255,.45);}
.badge--pink{color:var(--neon-pink);background:rgba(255,77,141,.13);border:1px solid rgba(255,77,141,.45);}
.badge--dark{color:var(--t2);background:var(--soft);border:1px solid var(--line);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;
  padding:70px 0 88px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(680px 320px at 12% 8%,rgba(47,227,196,.18),transparent 70%),
    radial-gradient(620px 380px at 88% 22%,rgba(124,92,255,.26),transparent 72%),
    radial-gradient(520px 300px at 62% 100%,rgba(255,77,141,.16),transparent 72%);
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.32;
  background-image:linear-gradient(rgba(201,198,224,.09) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(201,198,224,.09) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 30%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 20%,transparent 78%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;}
.hero h1{
  color:#fff;font-size:clamp(28px,5vw,46px);line-height:1.2;font-weight:800;
  letter-spacing:-.02em;margin-bottom:18px;
}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero__sub{color:var(--dtext2);font-size:17px;line-height:1.8;max-width:520px;margin-bottom:28px;}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero__facts{display:flex;flex-wrap:wrap;gap:26px;}
.hero__fact{min-width:104px;}
.hero__fact b{display:block;font-size:26px;font-weight:800;color:#fff;line-height:1.2;}
.hero__fact span{font-size:13px;color:var(--t3);}
.phone-wrap{display:flex;justify-content:flex-end;}
.phone{
  position:relative;width:100%;max-width:296px;aspect-ratio:9/16;
  border-radius:30px;overflow:hidden;
  border:1px solid rgba(201,198,224,.22);
  box-shadow:0 0 48px rgba(124,92,255,.4),0 0 0 6px rgba(20,18,42,.55);
}
.phone__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.phone__shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,9,19,.18) 0%,rgba(10,9,19,.12) 38%,rgba(10,9,19,.94) 100%);
}
.phone__live{
  position:absolute;top:16px;left:16px;display:inline-flex;align-items:center;gap:7px;
  height:26px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:700;
  color:var(--neon-pink);background:rgba(255,77,141,.16);border:1px solid rgba(255,77,141,.5);
}
.phone__live i{width:6px;height:6px;border-radius:50%;background:var(--neon-pink);box-shadow:0 0 10px var(--neon-pink);}
.phone__play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:66px;height:66px;border-radius:50%;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.42);
  backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;
}
.phone__play::before{
  content:"";border-style:solid;border-width:10px 0 10px 17px;
  border-color:transparent transparent transparent #fff;margin-left:4px;
}
.phone__foot{position:absolute;left:18px;right:18px;bottom:20px;}
.phone__foot h3{color:#fff;font-size:17px;font-weight:700;margin-bottom:5px;line-height:1.4;}
.phone__foot p{color:var(--dtext2);font-size:13px;margin-bottom:12px;}
.phone__badges{display:flex;gap:8px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--gap-sec) 0;}
.section--tight{padding:56px 0;}
.section--soft{background:var(--soft);}
.sec-head{margin-bottom:34px;max-width:720px;}
.sec-head h2{font-size:clamp(22px,3.2vw,32px);line-height:1.28;font-weight:700;margin-bottom:10px;}
.sec-head p{color:var(--t2);font-size:15px;}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* ---------- 竖屏卡 ---------- */
.portrait-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.pcard{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  aspect-ratio:9/16;background:var(--ink-800);
  box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease;
}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--sh-2);}
.pcard img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.pcard__shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,9,19,.05) 30%,rgba(10,9,19,.9) 100%);}
.pcard__top{position:absolute;top:12px;left:12px;right:12px;display:flex;justify-content:space-between;gap:8px;}
.pcard__play{
  position:absolute;top:44%;left:50%;transform:translate(-50%,-50%);
  width:52px;height:52px;border-radius:50%;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.5);
  display:flex;align-items:center;justify-content:center;
  transition:transform .28s ease;
}
.pcard__play::before{
  content:"";border-style:solid;border-width:8px 0 8px 13px;
  border-color:transparent transparent transparent #fff;margin-left:3px;
}
.pcard:hover .pcard__play{transform:translate(-50%,-50%) scale(1.06);}
.pcard__foot{position:absolute;left:14px;right:14px;bottom:14px;}
.pcard__foot h3{color:#fff;font-size:15px;font-weight:700;line-height:1.45;margin-bottom:7px;}
.pcard__meta{font-size:12px;color:var(--neon-cyan);font-weight:700;}

/* ---------- 清单 ---------- */
.check-list{max-width:860px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);overflow:hidden;}
.check-item{
  display:flex;align-items:center;gap:16px;padding:20px 24px;
  border-top:1px solid var(--line);position:relative;
  transition:transform .24s ease,background-color .24s ease;
}
.check-item:first-child{border-top:none;}
.check-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--grad-brand);border-radius:0 3px 3px 0;opacity:0;transition:opacity .24s ease;
}
.check-item:hover{background:#FBFBFE;transform:translateX(4px);}
.check-item:hover::before{opacity:1;}
.check-item__no{
  flex:0 0 auto;width:36px;height:36px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,227,196,.12);color:#0F9E86;font-weight:800;font-size:14px;
}
.check-item__body{flex:1 1 auto;min-width:0;}
.check-item__body h3{font-size:16.5px;font-weight:700;margin-bottom:3px;}
.check-item__body p{font-size:14px;color:var(--t2);line-height:1.7;}
.check-item .btn--text{flex:0 0 auto;font-size:14px;}

/* ---------- 口碑横滚 ---------- */
.review-rail{display:flex;gap:20px;overflow-x:auto;padding:6px 4px 18px;scroll-snap-type:x mandatory;}
.review-rail::-webkit-scrollbar{height:6px;}
.review-rail::-webkit-scrollbar-thumb{background:rgba(124,92,255,.3);border-radius:999px;}
.review-card{
  position:relative;flex:0 0 300px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 22px 20px;box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.review-card::before{
  content:"“";position:absolute;left:16px;top:6px;font-size:46px;line-height:1;
  color:var(--neon-violet);opacity:.32;font-weight:800;
}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad-brand);color:#0A0913;font-weight:800;font-size:15px;
}
.review-head b{display:block;font-size:15px;color:var(--t1);}
.review-head span{font-size:12px;color:var(--t3);}
.stars{color:var(--warn);font-size:13px;letter-spacing:2px;margin-left:auto;}
.review-card p{font-size:14px;color:var(--t2);line-height:1.75;}
.review-time{display:block;margin-top:12px;font-size:12px;color:var(--t3);}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;color:#fff;
  padding:56px 0;
  background:var(--ink-900);
}
.cta-band__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  opacity:.55;
}
.cta-band__mask{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(10,9,19,.9) 0%,rgba(20,18,42,.82) 48%,rgba(124,92,255,.5) 100%);
}
.cta-band .container{position:relative;z-index:2;}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-band h2{color:#fff;font-size:clamp(21px,2.6vw,28px);line-height:1.35;margin-bottom:8px;}
.cta-band p{color:var(--dtext2);font-size:15px;max-width:560px;}
.cta-band .btn{height:52px;padding:0 32px;font-size:16px;flex:0 0 auto;}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(47,227,196,.42);}
.news-card__top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.news-card__time{font-size:12px;color:var(--t3);}
.news-card h3{
  font-size:17px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card p{
  font-size:14px;color:var(--t2);line-height:1.7;flex:1 1 auto;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__more{font-size:13px;font-weight:700;color:var(--neon-violet);}
.news-card:hover .news-card__more{color:var(--neon-pink);}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;padding:56px 24px;background:var(--card);border:1px dashed var(--line);
  border-radius:var(--r-xl);text-align:center;
}
.empty-state__icon{
  width:52px;height:52px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:rgba(124,92,255,.1);border:1px solid rgba(124,92,255,.3);color:var(--neon-violet);font-size:22px;
}
.empty-state p{color:var(--t3);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:grid;gap:14px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:box-shadow .24s ease,border-color .24s ease;
  position:relative;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;
  background:var(--grad-brand);opacity:0;transition:opacity .24s ease;
}
.faq-item.is-open{box-shadow:var(--sh-1);border-color:rgba(124,92,255,.35);}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 22px;text-align:left;font-size:16.5px;font-weight:700;color:var(--t1);
}
.faq-q:hover{color:var(--neon-violet);}
.faq-q i{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;position:relative;
  background:var(--soft);transition:transform .26s ease,background-color .26s ease;
}
.faq-q i::before,.faq-q i::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--t2);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q i::before{width:12px;height:2px;}
.faq-q i::after{width:2px;height:12px;}
.faq-item.is-open .faq-q i{transform:rotate(45deg);background:rgba(47,227,196,.16);}
.faq-item.is-open .faq-q i::before,.faq-item.is-open .faq-q i::after{background:#0F9E86;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease;}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--t2);line-height:1.8;}
.faq-item.is-open .faq-a{max-height:320px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);color:var(--dtext2);
  position:relative;padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:46px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--t3);max-width:300px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.01em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:var(--dtext2);}
.footer-col a:hover{color:var(--neon-cyan);}
.footer-contact{display:grid;gap:14px;}
.footer-contact__row{display:flex;align-items:center;gap:12px;font-size:14px;}
.footer-ico{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(47,227,196,.45);color:var(--neon-cyan);font-size:15px;
  background:rgba(47,227,196,.07);
}
.footer-bottom{
  border-top:1px solid rgba(201,198,224,.14);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--t3);
}

/* ---------- 暗区过渡带 ---------- */
.band-edge{height:32px;background:linear-gradient(180deg,var(--ink-900),var(--paper));}
.band-edge--up{height:32px;background:linear-gradient(180deg,var(--paper),var(--ink-900));}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .portrait-grid{grid-template-columns:repeat(3,1fr);}
  :root{--gap-sec:72px;}
}
@media (max-width:1023px){
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;top:70px;right:0;bottom:0;width:280px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:var(--ink-800);border-left:1px solid rgba(124,92,255,.35);
    padding:22px 18px;margin:0;
    transform:translateX(102%);transition:transform .3s ease;
    overflow-y:auto;z-index:70;
  }
  .nav-links.is-open{transform:translateX(0);box-shadow:-20px 0 60px rgba(10,9,19,.6);}
  .nav-links a{height:48px;padding:0 16px;font-size:16px;border-radius:12px;}
  .nav-links a.is-active{background:rgba(47,227,196,.1);}
  .nav-links a.is-active::after{left:16px;right:auto;width:3px;top:12px;bottom:12px;height:auto;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero{text-align:left;padding:56px 0 68px;}
  .hero__sub{max-width:none;}
  .phone-wrap{justify-content:center;}
  .phone{max-width:240px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-band__inner{flex-direction:column;align-items:flex-start;gap:22px;}
}
@media (max-width:767px){
  :root{--gap-sec:var(--gap-sec-s);--r-xl:18px;}
  .container{padding:0 16px;}
  .nav-bar{gap:14px;height:64px;}
  .nav-links{top:64px;}
  .brand__text{font-size:16px;}
  .brand__mark{width:32px;height:32px;border-radius:10px;}
  .nav-right .btn--primary{display:none;}
  .hero{padding:44px 0 56px;}
  .hero__facts{gap:18px;}
  .hero__fact b{font-size:22px;}
  .portrait-grid{
    display:flex;overflow-x:auto;gap:16px;scroll-snap-type:x mandatory;
    padding-bottom:12px;margin:0 -16px;padding-left:16px;padding-right:16px;
  }
  .portrait-grid::-webkit-scrollbar{height:0;}
  .portrait-grid > *{flex:0 0 64%;scroll-snap-align:start;}
  .check-item{padding:16px 18px;gap:12px;align-items:flex-start;flex-wrap:wrap;}
  .check-item .btn--text{font-size:13px;}
  .review-card{flex:0 0 84%;}
  .news-grid{grid-template-columns:1fr;}
  .sec-head--row{flex-direction:column;align-items:flex-start;}
  .faq-q{font-size:15.5px;padding:16px 18px;}
  .faq-a p{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .cta-band{padding:44px 0;}
  .cta-band .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  .hero h1{font-size:26px;}
  .phone{max-width:200px;}
  .portrait-grid > *{flex:0 0 76%;}
}

/* roulang page: article */
:root{
  --ink-900:#0A0913;
  --ink-800:#14122A;
  --ink-700:#1E1B3A;
  --neon-cyan:#2FE3C4;
  --neon-violet:#7C5CFF;
  --neon-pink:#FF4D8D;
  --grad-brand:linear-gradient(135deg,#2FE3C4 0%,#7C5CFF 55%,#FF4D8D 100%);
  --paper:#F5F6FB;
  --card:#FFFFFF;
  --line:#E6E8F2;
  --soft:#EEF0F8;
  --t1:#14122A;
  --t2:#4A4A66;
  --t3:#8A8AA3;
  --dark-t1:#FFFFFF;
  --dark-t2:#C9C6E0;
  --ok:#1FC08A;
  --warn:#FFB020;
  --err:#FF5A5A;
  --r-lg:22px;
  --r-md:16px;
  --r-sm:14px;
  --r-pill:999px;
  --sh-card:0 8px 24px rgba(20,18,42,.06),0 1px 2px rgba(20,18,42,.04);
  --sh-card-hover:0 18px 40px rgba(20,18,42,.12),0 2px 6px rgba(20,18,42,.06);
  --sh-glow:0 0 24px rgba(47,227,196,.25);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift","Roboto Mono",ui-monospace,monospace;
  --space-section:84px;
  --space-section-m:48px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--t2);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
li{list-style:none}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--neon-cyan);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-weight:800;letter-spacing:.01em}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,9,19,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
}
.site-header::after{
  content:"";display:block;height:1px;width:100%;
  background:var(--grad-brand);opacity:.85;
}
.nav-bar{
  height:70px;display:flex;align-items:center;gap:28px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:32px;height:32px;border-radius:10px;
  background:var(--grad-brand);
  box-shadow:var(--sh-glow);
  position:relative;flex-shrink:0;
}
.brand__mark::after{
  content:"";position:absolute;inset:9px 9px auto auto;
  width:9px;height:9px;border-radius:3px;
  background:rgba(10,9,19,.85);
}
.brand__mark::before{
  content:"";position:absolute;left:8px;bottom:8px;
  width:14px;height:3px;border-radius:2px;
  background:rgba(10,9,19,.6);
}
.brand__text{
  color:#fff;font-size:18px;font-weight:800;letter-spacing:-.02em;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  color:var(--dark-t2);font-size:15px;font-weight:600;border-radius:var(--r-sm);
  transition:color .22s ease,background .22s ease,transform .22s ease;
}
.nav-links a:hover{
  color:var(--neon-cyan);
  text-shadow:0 0 12px rgba(47,227,196,.65);
  background:rgba(47,227,196,.06);
}
.nav-links a.is-active{
  color:#fff;
  text-shadow:0 0 14px rgba(47,227,196,.6);
  transform:translateY(-1px);
}
.nav-links a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  background:var(--grad-brand);border-radius:2px;
  box-shadow:0 0 12px rgba(47,227,196,.75);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:active{transform:scale(.98)}
.btn--primary{
  height:40px;padding:0 20px;
  background:var(--grad-brand);color:#0A0913;font-weight:800;
  box-shadow:0 6px 20px rgba(124,92,255,.35);
}
.btn--primary:hover{
  filter:brightness(1.08);transform:translateY(-3px);
  box-shadow:0 12px 30px rgba(124,92,255,.45),var(--sh-glow);
}
.btn--ghost{
  background:transparent;color:#fff;border-color:rgba(47,227,196,.55);
}
.btn--ghost:hover{
  background:rgba(47,227,196,.1);border-color:var(--neon-cyan);
  box-shadow:var(--sh-glow);transform:translateY(-3px);
}
.btn--link{
  height:auto;padding:0;border-radius:0;background:none;
  color:var(--neon-cyan);font-weight:700;position:relative;
}
.btn--link::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;
  background:var(--grad-brand);transition:width .28s ease;
}
.btn--link:hover::after{width:100%}
.btn--outline{
  background:#fff;color:var(--t1);border-color:var(--line);
}
.btn--outline:hover{
  border-color:rgba(47,227,196,.7);color:var(--t1);
  transform:translateY(-3px);box-shadow:var(--sh-card-hover);
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:18px;height:2px;background:#fff;border-radius:2px;
  position:relative;transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span::before{position:absolute;top:-6px;left:0}
.nav-toggle span::after{position:absolute;top:6px;left:0}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- breadcrumb ---------- */
.crumb-band{
  background:var(--ink-800);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:nowrap;
  height:52px;font-size:13px;color:var(--dark-t2);
}
.crumb a{color:var(--dark-t2);transition:color .2s ease}
.crumb a:hover{color:var(--neon-cyan)}
.crumb .sep{color:rgba(201,198,224,.45)}
.crumb .now{
  color:#fff;max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  color:#fff;
  background:
    radial-gradient(760px 320px at 12% 8%,rgba(47,227,196,.20),transparent 62%),
    radial-gradient(680px 300px at 88% 92%,rgba(255,77,141,.18),transparent 60%),
    linear-gradient(180deg,var(--ink-900) 0%,var(--ink-800) 100%);
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 30%,#000 25%,transparent 78%);
  pointer-events:none;
}
.article-hero__inner{
  position:relative;z-index:2;
  max-width:900px;
  padding:64px 0 76px;
}
.article-hero h1{
  color:#fff;
  font-size:clamp(28px,5vw,46px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.article-hero__sub{
  font-size:clamp(15px,1.6vw,17px);
  color:var(--dark-t2);
  max-width:680px;
  line-height:1.8;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;letter-spacing:.01em;
  background:rgba(47,227,196,.12);border:1px solid rgba(47,227,196,.45);color:var(--neon-cyan);
}
.badge--pink{background:rgba(255,77,141,.12);border-color:rgba(255,77,141,.45);color:var(--neon-pink)}
.badge--violet{background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.48);color:#A996FF}
.badge--muted{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);color:var(--dark-t2)}
.badge--light{background:rgba(20,18,42,.05);border-color:var(--line);color:var(--t2)}
.badge--light-cyan{background:rgba(47,227,196,.14);border-color:rgba(47,227,196,.5);color:#0E8C77}
.badge--light-pink{background:rgba(255,77,141,.12);border-color:rgba(255,77,141,.42);color:#C72764}

/* transition band */
.band-fade{
  height:32px;
  background:linear-gradient(180deg,var(--ink-800) 0%,var(--paper) 100%);
}

/* ---------- layout ---------- */
.article-main{padding:44px 0 var(--space-section)}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:36px;
  align-items:start;
}
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
}
.article-body{
  max-width:820px;
  padding:38px 40px 44px;
  color:var(--t2);
  font-size:16px;
  line-height:1.85;
}
.article-body h2{
  position:relative;
  font-size:clamp(22px,3.2vw,32px);
  line-height:1.28;
  margin:40px 0 16px;
  padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;
  background:var(--grad-brand);box-shadow:0 0 14px rgba(47,227,196,.5);
}
.article-body h3{
  font-size:20px;line-height:1.4;margin:28px 0 12px;
}
.article-body p{margin:0 0 1.1em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body li{list-style:disc;margin:6px 0}
.article-body ol li{list-style:decimal}
.article-body a{color:#0E8C77;border-bottom:1px solid rgba(47,227,196,.55)}
.article-body a:hover{color:var(--neon-violet)}
.article-body img{border-radius:var(--r-md);margin:20px auto;box-shadow:var(--sh-card)}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;background:var(--soft);
  border-left:4px solid var(--neon-cyan);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--t1);font-weight:500;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;
  border-radius:var(--r-sm);overflow:hidden;box-shadow:var(--sh-card);
}
.article-body th{
  background:var(--ink-700);color:#fff;font-weight:700;text-align:left;
  padding:12px 14px;font-size:14px;
}
.article-body td{padding:12px 14px;border-top:1px solid var(--line);background:#fff}
.article-body tr:hover td{background:var(--soft)}
.article-body figure{margin:20px 0}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--t3);margin-top:8px;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

.empty-state{
  padding:56px 32px;text-align:center;
}
.empty-state__ico{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--soft);border:1px solid var(--line);
  font-size:22px;color:var(--neon-violet);
}
.empty-state h2{font-size:22px;margin-bottom:10px;padding:0}
.empty-state h2::before{display:none}
.empty-state p{color:var(--t3);margin-bottom:22px}

/* ---------- sidebar ---------- */
.side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{padding:22px}
.side-card h3{
  font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:4px;height:16px;border-radius:3px;background:var(--grad-brand);
}
.side-list li + li{border-top:1px solid var(--line)}
.side-list a{
  display:block;padding:12px 0 12px 10px;border-left:3px solid transparent;
  font-size:14px;color:var(--t2);line-height:1.6;
  transition:border-color .2s ease,transform .2s ease,color .2s ease,background .2s ease;
}
.side-list a:hover{
  border-left-color:var(--neon-cyan);transform:translateX(4px);color:var(--t1);
  background:linear-gradient(90deg,rgba(47,227,196,.08),transparent);
}
.side-list .side-meta{display:block;font-size:12px;color:var(--t3);margin-top:4px}
.side-cta{
  background:linear-gradient(135deg,var(--ink-900),var(--ink-700));
  border-radius:var(--r-lg);padding:24px;color:#fff;border:1px solid rgba(124,92,255,.35);
}
.side-cta h3{color:#fff;font-size:17px;margin-bottom:8px}
.side-cta p{font-size:14px;color:var(--dark-t2);margin-bottom:16px}
.side-cta .btn{width:100%}

/* ---------- related ---------- */
.section{padding:var(--space-section) 0}
.section--tight{padding:56px 0}
.section-head{margin-bottom:32px}
.section-head h2{
  font-size:clamp(22px,3.2vw,32px);line-height:1.28;margin-bottom:10px;
}
.section-head p{color:var(--t3);font-size:15px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-card);display:flex;flex-direction:column;
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-card-hover);border-color:rgba(47,227,196,.4)}
.card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--soft)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card__media img{transform:scale(1.05)}
.card__tag{
  position:absolute;left:14px;top:14px;z-index:2;
}
.card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__body h3{
  font-size:17px;line-height:1.5;font-weight:700;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__body h3 a:hover{color:var(--neon-violet)}
.card__desc{
  font-size:14px;line-height:1.7;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-top:12px;border-top:1px solid var(--line);
}
.card__time{font-size:12px;color:var(--t3)}
.card__link{font-size:13px;font-weight:700;color:#0E8C77;white-space:nowrap}

/* ---------- faq ---------- */
.faq{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-card);overflow:hidden;transition:border-color .25s ease;
}
.faq-item.is-open{border-color:rgba(47,227,196,.5)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:none;cursor:pointer;text-align:left;
  font-size:16px;font-weight:700;color:var(--t1);
}
.faq-q:focus-visible{outline:2px solid var(--neon-cyan);outline-offset:-4px}
.faq-q .ico{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--soft);color:var(--t2);font-size:16px;line-height:1;
  transition:transform .3s ease,background .3s ease,color .3s ease;
}
.faq-item.is-open .ico{
  transform:rotate(45deg);background:rgba(47,227,196,.16);color:#0E8C77;
}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .34s ease;
  border-left:3px solid transparent;
}
.faq-item.is-open .faq-a{border-left-color:var(--neon-cyan)}
.faq-a__inner{
  padding:0 22px 20px 22px;font-size:15px;line-height:1.8;color:var(--t2);
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  background-image:
    linear-gradient(120deg,rgba(10,9,19,.88),rgba(30,27,58,.82)),
    url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:var(--grad-brand);opacity:.14;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:56px 0;
}
.cta-inner h2{color:#fff;font-size:clamp(21px,3vw,30px);line-height:1.3;margin-bottom:8px}
.cta-inner p{color:var(--dark-t2);font-size:15px}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-900);color:var(--dark-t2);
  border-top:1px solid transparent;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-brand);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding:60px 0 40px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--t3);max-width:300px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--dark-t2);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col a:hover{color:var(--neon-cyan);transform:translateX(4px)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact__row{display:flex;align-items:center;gap:10px;font-size:14px}
.footer-ico{
  width:36px;height:36px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:15px;
  border:1px solid rgba(47,227,196,.45);color:var(--neon-cyan);
  background:rgba(47,227,196,.07);
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--t3);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:28px}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;top:71px;right:0;width:min(84vw,320px);height:calc(100vh - 71px);
    margin:0;padding:22px 20px;flex-direction:column;align-items:stretch;gap:6px;
    background:rgba(10,9,19,.98);
    border-left:1px solid rgba(47,227,196,.28);
    transform:translateX(104%);
    transition:transform .3s ease;
    overflow-y:auto;z-index:70;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{height:48px;font-size:16px;padding:0 14px}
  .nav-links a.is-active{background:rgba(47,227,196,.1);transform:none}
  .nav-links a.is-active::after{left:0;right:auto;width:3px;top:8px;bottom:8px;height:auto}
  .article-layout{grid-template-columns:1fr}
  .side{position:static}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px}
  :root{--space-section:64px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .nav-bar{height:64px;gap:14px}
  .nav-links{top:65px;height:calc(100vh - 65px)}
  .brand__text{font-size:16px}
  .nav-right .btn--primary{display:none}
  .article-hero__inner{padding:44px 0 52px}
  .article-body{padding:26px 20px 32px}
  .section{padding:var(--space-section-m) 0}
  .grid-3{grid-template-columns:1fr;gap:18px}
  .cta-inner{padding:40px 0;flex-direction:column;align-items:flex-start}
  .crumb .now{max-width:46vw}
  :root{--space-section:52px}
}
@media (max-width:479px){
  .article-hero h1{font-size:26px}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px}
  .meta-row{gap:8px}
  .badge{height:24px;padding:0 10px;font-size:11px}
}

/* roulang page: category1 */
:root{
  --ink-900:#0A0913;
  --ink-800:#14122A;
  --ink-700:#1E1B3A;
  --neon-cyan:#2FE3C4;
  --neon-violet:#7C5CFF;
  --neon-pink:#FF4D8D;
  --grad-brand:linear-gradient(135deg,#2FE3C4 0%,#7C5CFF 55%,#FF4D8D 100%);
  --paper:#F5F6FB;
  --card:#FFFFFF;
  --line:#E6E8F2;
  --weak:#EEF0F8;
  --t1:#14122A;
  --t2:#4A4A66;
  --t3:#8A8AA3;
  --ok:#1FC08A;
  --warn:#FFB020;
  --err:#FF5A5A;
  --dark-text:#FFFFFF;
  --dark-text-2:#C9C6E0;
  --r-lg:22px;
  --r-md:16px;
  --r-sm:14px;
  --shadow-card:0 8px 24px rgba(20,18,42,.06),0 1px 2px rgba(20,18,42,.04);
  --shadow-hover:0 18px 38px rgba(20,18,42,.12),0 2px 4px rgba(20,18,42,.05);
  --glow-cyan:0 0 24px rgba(47,227,196,.25);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift","SF Mono","Roboto Mono",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--t2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
input,select,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--neon-cyan);outline-offset:2px;border-radius:6px;}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,9,19,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  border-image:var(--grad-brand) 1;
}
.nav-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--grad-brand);
  position:relative;
  box-shadow:var(--glow-cyan);
  flex-shrink:0;
}
.brand__mark::after{
  content:"";
  position:absolute;inset:9px;
  border-radius:5px;
  background:rgba(10,9,19,.85);
  clip-path:polygon(50% 0,100% 100%,0 100%);
}
.brand__text{
  color:var(--dark-text);
  font-size:18px;
  font-weight:800;
  letter-spacing:-.02em;
  white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  color:var(--dark-text-2);
  font-size:15px;
  font-weight:600;
  border-radius:10px;
  transition:color .22s ease,transform .22s ease,background-color .22s ease;
}
.nav-links a:hover{color:var(--neon-cyan);text-shadow:0 0 .2em rgba(47,227,196,.55);}
.nav-links a.is-active{
  color:var(--dark-text);
  transform:translateY(-1px);
}
.nav-links a.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--grad-brand);
  box-shadow:0 0 12px rgba(124,92,255,.75);
}
.nav-right{display:flex;align-items:center;gap:12px;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  transition:transform .2s ease,filter .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn:active{transform:scale(.98);}
.btn--primary{
  background:var(--grad-brand);
  color:#0A0913;
  box-shadow:0 6px 20px rgba(124,92,255,.32);
}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-3px);box-shadow:0 12px 28px rgba(47,227,196,.34);}
.btn--ghost{
  background:transparent;
  color:var(--dark-text);
  border:1px solid rgba(47,227,196,.55);
}
.btn--ghost:hover{background:rgba(47,227,196,.1);transform:translateY(-3px);}
.btn--link{
  height:auto;padding:0;border-radius:0;
  color:var(--neon-violet);
  font-size:14px;
  font-weight:700;
  background:none;
  position:relative;
}
.btn--link::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--neon-violet);
  transition:width .28s ease;
}
.btn--link:hover::after{width:100%;}
.btn--sm{height:38px;padding:0 18px;font-size:14px;}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid rgba(201,198,224,.28);
  position:relative;
  flex-shrink:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:11px;right:11px;
  height:2px;border-radius:2px;
  background:var(--dark-text);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:20px;}
.nav-toggle span::before{content:"";left:0;right:0;top:-6px;}
.nav-toggle span::after{content:"";left:0;right:0;top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  padding:56px 0 64px;
  min-height:300px;
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  opacity:.34;
}
.page-hero__mask{
  position:absolute;inset:0;
  background:
    radial-gradient(760px 380px at 18% 8%,rgba(47,227,196,.24),transparent 62%),
    radial-gradient(680px 400px at 88% 92%,rgba(255,77,141,.22),transparent 60%),
    linear-gradient(180deg,rgba(10,9,19,.72) 0%,rgba(10,9,19,.9) 62%,rgba(10,9,19,.99) 100%);
}
.page-hero__grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(201,198,224,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(201,198,224,.07) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 30% 30%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 30%,#000 0%,transparent 78%);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;
  color:var(--dark-text-2);
  margin-bottom:18px;
}
.crumb a{color:var(--dark-text-2);transition:color .2s ease;}
.crumb a:hover{color:var(--neon-cyan);}
.crumb span{opacity:.6;}
.page-hero h1{
  color:var(--dark-text);
  font-size:clamp(28px,5vw,46px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:820px;
}
.page-hero__sub{
  margin-top:16px;
  color:var(--dark-text-2);
  font-size:clamp(15px,1.6vw,17px);
  max-width:640px;
  line-height:1.75;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
}
.badge--cyan{color:var(--neon-cyan);background:rgba(47,227,196,.12);border:1px solid rgba(47,227,196,.45);}
.badge--violet{color:#B9A7FF;background:rgba(124,92,255,.14);border:1px solid rgba(124,92,255,.5);}
.badge--pink{color:#FF7FAC;background:rgba(255,77,141,.13);border:1px solid rgba(255,77,141,.48);}

.cat-switch{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:30px;
}
.cat-switch a{
  display:inline-flex;
  align-items:center;
  height:42px;
  padding:0 20px;
  border-radius:999px;
  border:1px solid rgba(201,198,224,.26);
  color:var(--dark-text-2);
  font-size:14px;
  font-weight:700;
  transition:all .22s ease;
}
.cat-switch a:hover{
  color:var(--dark-text);
  border-color:rgba(47,227,196,.6);
  background:rgba(47,227,196,.08);
}
.cat-switch a.is-active{
  color:#0A0913;
  background:var(--grad-brand);
  border-color:transparent;
  box-shadow:0 0 22px rgba(47,227,196,.36);
}

/* 暗到浅的过渡带 */
.band-fade{
  height:32px;
  background:linear-gradient(180deg,var(--ink-900) 0%,#3A3552 46%,var(--paper) 100%);
}

/* ============ 通用板块 ============ */
.section{padding:clamp(44px,6vw,84px) 0;}
.section--tight{padding-top:clamp(30px,4vw,52px);}
.section-head{max-width:760px;margin-bottom:clamp(26px,3.4vw,42px);}
.section-head h2{
  font-size:clamp(22px,3.2vw,32px);
  line-height:1.28;
  font-weight:700;
  color:var(--t1);
  letter-spacing:-.01em;
}
.section-head h2::before{
  content:"";
  display:block;
  width:44px;height:4px;
  border-radius:4px;
  background:var(--grad-brand);
  margin-bottom:14px;
}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--t2);}

/* ============ 图文交错块 ============ */
.feature-row{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:clamp(24px,3.6vw,52px);
  align-items:center;
  padding:clamp(20px,2.6vw,30px) 0;
  border-top:1px solid var(--line);
}
.feature-row:first-of-type{border-top:0;padding-top:0;}
.feature-row--rev .feature-row__media{order:-1;}
.feature-row__body h2{
  font-size:clamp(20px,2.6vw,28px);
  line-height:1.32;
  font-weight:700;
  color:var(--t1);
  letter-spacing:-.01em;
}
.feature-row__body p{margin-top:14px;font-size:15.5px;color:var(--t2);}
.feature-row__media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--weak);
  box-shadow:var(--shadow-card);
}
.feature-row__media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-row__media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(10,9,19,.5) 100%);
  pointer-events:none;
}
.tick-list{margin-top:20px;display:grid;gap:12px;}
.tick-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--t2);
  padding:12px 16px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.tick-list li:hover{
  transform:translateX(4px);
  border-color:rgba(47,227,196,.5);
  box-shadow:0 10px 22px rgba(20,18,42,.07);
}
.tick-list .tick-ico{
  flex-shrink:0;
  width:24px;height:24px;
  border-radius:8px;
  background:rgba(47,227,196,.14);
  border:1px solid rgba(47,227,196,.45);
  color:#12A88D;
  font-size:13px;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
  margin-top:4px;
}
.tick-list strong{color:var(--t1);font-weight:700;}

/* ============ 时间轴 ============ */
.timeline-wrap{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  padding:clamp(22px,3vw,40px);
}
.timeline{position:relative;padding-left:38px;}
.timeline::before{
  content:"";
  position:absolute;
  left:11px;top:8px;bottom:8px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--neon-cyan),var(--neon-violet),var(--neon-pink));
  opacity:.6;
}
.timeline li{
  position:relative;
  padding:14px 0 14px 4px;
  border-bottom:1px dashed var(--line);
  transition:transform .22s ease;
}
.timeline li:last-child{border-bottom:0;}
.timeline li:hover{transform:translateX(4px);}
.timeline li::before{
  content:"";
  position:absolute;
  left:-34px;top:22px;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--paper);
  border:3px solid var(--neon-cyan);
  box-shadow:0 0 0 4px rgba(47,227,196,.14);
}
.timeline h3{
  font-size:17px;
  font-weight:700;
  color:var(--t1);
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.timeline h3 .step-num{
  font-family:var(--font-num);
  font-size:13px;
  font-weight:800;
  color:#12A88D;
  background:rgba(47,227,196,.14);
  border:1px solid rgba(47,227,196,.4);
  border-radius:999px;
  padding:1px 10px;
}
.timeline p{margin-top:8px;font-size:14.5px;color:var(--t2);}

/* ============ 横卡网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.card:hover{
  transform:translateY(-6px);
  border-color:rgba(47,227,196,.32);
  box-shadow:var(--shadow-hover);
}
.card__media{position:relative;overflow:hidden;background:var(--weak);}
.card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.card:hover .card__media img{transform:scale(1.04);}
.card__tags{
  position:absolute;
  left:12px;top:12px;
  display:flex;
  gap:8px;
}
.card__body{padding:20px;display:flex;flex-direction:column;flex:1;gap:10px;}
.card__body h3{
  font-size:17px;
  line-height:1.45;
  font-weight:700;
  color:var(--t1);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card__body p{
  font-size:14px;
  line-height:1.7;
  color:var(--t2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card__foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--t3);
}
.card__foot .num{font-family:var(--font-num);font-weight:700;color:var(--t2);}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:860px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item.is-open{
  border-color:rgba(47,227,196,.45);
  box-shadow:0 12px 28px rgba(20,18,42,.08);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  text-align:left;
  font-size:16px;
  font-weight:700;
  color:var(--t1);
  line-height:1.55;
}
.faq-q .faq-ico{
  flex-shrink:0;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid rgba(124,92,255,.5);
  color:var(--neon-violet);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;
  font-weight:700;
  transition:transform .26s ease,background-color .26s ease;
}
.faq-item.is-open .faq-ico{transform:rotate(45deg);background:rgba(124,92,255,.12);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a__inner{
  padding:0 22px 20px 22px;
  border-left:3px solid var(--neon-cyan);
  margin-left:22px;
  font-size:15px;
  line-height:1.85;
  color:var(--t2);
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  margin-top:clamp(20px,3vw,32px);
}
.cta-band__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
  opacity:.4;
}
.cta-band__mask{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,9,19,.86) 0%,rgba(30,27,58,.82) 52%,rgba(10,9,19,.9) 100%);
}
.cta-band__mask::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(47,227,196,.18),rgba(124,92,255,.16) 55%,rgba(255,77,141,.16));
}
.cta-band .container{position:relative;z-index:2;}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:clamp(34px,4.4vw,56px) 0;
  flex-wrap:wrap;
}
.cta-inner h2{
  color:var(--dark-text);
  font-size:clamp(21px,2.8vw,30px);
  line-height:1.3;
  font-weight:700;
  max-width:640px;
}
.cta-inner p{margin-top:10px;color:var(--dark-text-2);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--ink-900);
  color:var(--dark-text-2);
  padding-top:52px;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:2px;
  background:var(--grad-brand);
  opacity:.85;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:40px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:var(--dark-text-2);
  max-width:300px;
}
.footer-col h4{
  color:var(--dark-text);
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{
  font-size:14px;
  color:var(--dark-text-2);
  transition:color .2s ease,padding-left .2s ease;
}
.footer-col ul a:hover{color:var(--neon-cyan);padding-left:4px;}
.footer-contact{display:grid;gap:12px;}
.footer-contact__row{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
}
.footer-ico{
  width:36px;height:36px;
  flex-shrink:0;
  border-radius:12px;
  border:1px solid rgba(47,227,196,.45);
  color:var(--neon-cyan);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;
}
.footer-bottom{
  border-top:1px solid rgba(201,198,224,.14);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:13px;
  color:var(--t3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023px){
  .container{padding:0 20px;}
  .nav-toggle{display:block;}
  .nav-links{
    position:fixed;
    top:68px;
    right:0;
    width:min(300px,82vw);
    height:calc(100vh - 68px);
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:22px 18px;
    background:rgba(10,9,19,.98);
    border-left:1px solid rgba(47,227,196,.28);
    box-shadow:-20px 0 46px rgba(0,0,0,.5);
    transform:translateX(104%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{
    padding:14px 12px;
    font-size:16px;
    border-bottom:1px solid rgba(201,198,224,.1);
    border-radius:0;
  }
  .nav-links a.is-active{background:rgba(47,227,196,.08);border-radius:10px;}
  .nav-links a.is-active::after{left:12px;right:auto;width:3px;height:22px;top:50%;bottom:auto;transform:translateY(-50%);}
  .feature-row{grid-template-columns:1fr;}
  .feature-row--rev .feature-row__media{order:0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .btn--primary.nav-cta{display:none;}
  .page-hero{padding:40px 0 48px;}
  .card-grid{grid-template-columns:1fr;gap:18px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;min-width:150px;}
  .timeline{padding-left:30px;}
  .timeline li::before{left:-28px;}
  .faq-q{padding:17px 16px;font-size:15.5px;}
  .faq-a__inner{margin-left:16px;padding:0 16px 18px 16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:479px){
  .brand__text{font-size:16px;}
  .hero-badges{gap:8px;}
  .cat-switch a{height:38px;padding:0 15px;font-size:13px;}
  .card__body{padding:16px;}
  .card__body h3{font-size:16px;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0A0913;
  --ink-800:#14122A;
  --ink-700:#1E1B3A;
  --neon-cyan:#2FE3C4;
  --neon-violet:#7C5CFF;
  --neon-pink:#FF4D8D;
  --grad-brand:linear-gradient(135deg,#2FE3C4 0%,#7C5CFF 55%,#FF4D8D 100%);
  --paper:#F5F6FB;
  --card:#FFFFFF;
  --line:#E6E8F2;
  --soft:#EEF0F8;
  --t1:#14122A;
  --t2:#4A4A66;
  --t3:#8A8AA3;
  --dk-t1:#FFFFFF;
  --dk-t2:#C9C6E0;
  --ok:#1FC08A;
  --warn:#FFB020;
  --err:#FF5A5A;
  --r-lg:22px;
  --r-md:16px;
  --r-sm:14px;
  --sh-card:0 8px 24px rgba(20,18,42,.06),0 1px 2px rgba(20,18,42,.04);
  --sh-hover:0 18px 40px rgba(20,18,42,.13),0 2px 6px rgba(20,18,42,.06);
  --glow-cyan:0 0 24px rgba(47,227,196,.25);
  --glow-violet:0 0 24px rgba(124,92,255,.28);
  --font-base:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","Bahnschrift", "Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.8;
  color:var(--t2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--neon-cyan);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(10,9,19,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--grad-brand);opacity:.75;
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;}
.brand__mark{
  width:34px;height:34px;border-radius:11px;position:relative;flex-shrink:0;
  background:var(--grad-brand);box-shadow:0 0 20px rgba(124,92,255,.45);
}
.brand__mark::after{
  content:"";position:absolute;inset:9px;border-radius:3px;background:rgba(10,9,19,.88);
  clip-path:polygon(50% 0%,100% 100%,0% 100%);
}
.brand__text{
  font-size:18px;font-weight:800;letter-spacing:-.02em;color:#fff;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:30px;}
.nav-links a{
  position:relative;display:inline-block;padding:6px 2px;
  font-size:15px;font-weight:500;color:var(--dk-t2);
  transition:color .22s ease,text-shadow .22s ease,transform .22s ease;
}
.nav-links a:hover{color:var(--neon-cyan);text-shadow:0 0 12px rgba(47,227,196,.55);}
.nav-links a.is-active{color:#fff;transform:translateY(-1px);}
.nav-links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--neon-cyan);box-shadow:0 0 12px rgba(47,227,196,.85);
}
.nav-right{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;font-size:15px;font-weight:700;
  padding:0 22px;height:42px;border-radius:999px;
  transition:transform .2s ease,box-shadow .25s ease,background-color .25s ease,color .25s ease,border-color .25s ease;
}
.btn--primary{
  background:var(--grad-brand);color:#0A0913;
  box-shadow:0 6px 18px rgba(124,92,255,.32);
}
.btn--primary:hover{transform:translateY(-3px);filter:brightness(1.08);box-shadow:0 10px 26px rgba(124,92,255,.46),var(--glow-cyan);}
.btn--primary:active{transform:translateY(-1px) scale(.98);}
.btn--ghost{
  background:transparent;color:#fff;border:1px solid rgba(47,227,196,.55);
}
.btn--ghost:hover{background:rgba(47,227,196,.1);border-color:var(--neon-cyan);transform:translateY(-3px);}
.btn--ghost:active{transform:translateY(-1px) scale(.98);}
.btn--lg{height:52px;padding:0 32px;font-size:16px;}
.btn--block{width:100%;}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;border-radius:13px;
  background:transparent;border:1px solid rgba(201,198,224,.25);cursor:pointer;
}
.nav-toggle span{position:absolute;left:13px;right:13px;top:21px;height:2px;border-radius:2px;background:#fff;transition:.25s;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:#fff;transition:.25s;
}
.nav-toggle span::before{top:-7px;}
.nav-toggle span::after{top:7px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}
.nav-mask{
  position:fixed;inset:0;z-index:110;background:rgba(10,9,19,.62);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ============ Hero（暗区 · 居中构图） ============ */
.cat-hero{
  position:relative;overflow:hidden;
  background-color:var(--ink-900);
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center 68%;
  min-height:300px;
  display:flex;align-items:center;
  padding:56px 0 64px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(760px 320px at 50% 118%,rgba(124,92,255,.52),transparent 72%),
    radial-gradient(520px 260px at 12% -10%,rgba(47,227,196,.24),transparent 70%),
    linear-gradient(180deg,rgba(10,9,19,.78) 0%,rgba(10,9,19,.9) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;opacity:.34;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%,#000 10%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 10%,transparent 76%);
}
.cat-hero .container{position:relative;z-index:2;text-align:center;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--neon-cyan);
  padding:6px 16px;border-radius:999px;
  background:rgba(47,227,196,.1);border:1px solid rgba(47,227,196,.38);
}
.cat-hero h1{
  margin:20px auto 14px;max-width:860px;
  font-size:clamp(28px,4.6vw,46px);font-weight:800;line-height:1.22;color:#fff;
  letter-spacing:-.01em;
}
.cat-hero h1 em{
  font-style:normal;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  max-width:660px;margin:0 auto;
  font-size:clamp(15px,1.7vw,17px);color:var(--dk-t2);
}
.cat-switch{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;
  margin-top:28px;
}
.cat-switch a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 20px;border-radius:999px;font-size:14px;font-weight:700;
  color:var(--dk-t2);background:rgba(255,255,255,.05);
  border:1px solid rgba(201,198,224,.22);
  transition:all .24s ease;
}
.cat-switch a:hover{color:#fff;border-color:rgba(47,227,196,.6);background:rgba(47,227,196,.1);}
.cat-switch a.is-current{
  color:#0A0913;background:var(--grad-brand);border-color:transparent;
  box-shadow:var(--glow-violet);
}

/* 过渡带 */
.band-fade{
  height:34px;
  background:linear-gradient(180deg,var(--ink-900) 0%,rgba(30,27,58,.55) 42%,rgba(245,246,251,0) 100%);
  margin-bottom:-34px;position:relative;z-index:3;
}

/* ============ 通用板块 ============ */
.section{padding:78px 0;}
.section--tight{padding:58px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  font-size:clamp(22px,3.2vw,32px);font-weight:700;letter-spacing:-.01em;
}
.section-head h2::after{
  content:"";display:block;width:56px;height:4px;border-radius:4px;margin-top:14px;
  background:var(--grad-brand);
}
.section-head--center h2::after{margin-left:auto;margin-right:auto;}
.section-head p{margin-top:14px;font-size:15.5px;color:var(--t2);}

/* ============ 数据徽章带 ============ */
.metric-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-card);
  margin-top:-30px;position:relative;z-index:6;
}
.metric{display:flex;flex-direction:column;gap:6px;padding:0 6px;position:relative;}
.metric + .metric::before{
  content:"";position:absolute;left:-9px;top:6px;bottom:6px;width:1px;background:var(--line);
}
.metric__label{font-size:13px;color:var(--t3);}
.metric__value{
  font-family:var(--font-num);font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--t1);line-height:1.1;
}
.metric__value span{font-size:14px;font-weight:700;color:var(--t3);margin-left:3px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:5px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:700;line-height:1;white-space:nowrap;
}
.badge--cyan{color:#0F8E7B;background:rgba(47,227,196,.13);border:1px solid rgba(47,227,196,.45);}
.badge--violet{color:#5A3DE0;background:rgba(124,92,255,.13);border:1px solid rgba(124,92,255,.42);}
.badge--pink{color:#D62469;background:rgba(255,77,141,.12);border:1px solid rgba(255,77,141,.42);}
.badge--warn{color:#9B6A00;background:rgba(255,176,32,.14);border:1px solid rgba(255,176,32,.45);}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-hover);border-color:rgba(47,227,196,.42);}
.card__cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--soft);}
.card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.card:hover .card__cover img{transform:scale(1.06);}
.card__cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,9,19,.32) 0%,rgba(10,9,19,0) 45%,rgba(10,9,19,.55) 100%);
}
.card__tags{position:absolute;top:14px;left:14px;right:14px;display:flex;justify-content:space-between;gap:8px;z-index:2;}
.card__tags .badge{background:rgba(10,9,19,.72);backdrop-filter:blur(6px);color:#fff;border-color:rgba(255,255,255,.24);}
.card__tags .badge--hot{color:#fff;border-color:rgba(255,77,141,.7);background:rgba(255,77,141,.42);}
.card__body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card__body h3{font-size:17px;font-weight:700;line-height:1.45;}
.card__body p{font-size:14px;line-height:1.7;color:var(--t2);}
.clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card__foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--t3);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:#4A3BD6;
  transition:gap .22s ease,color .22s ease;
}
.link-arrow::after{content:"→";transition:transform .22s ease;}
.link-arrow:hover{color:#7C5CFF;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ============ 对比表 ============ */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);
  background:#fff;box-shadow:var(--sh-card);
}
table.cmp{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;font-size:14.5px;}
table.cmp thead th{
  background:var(--ink-800);color:#fff;font-size:13.5px;font-weight:700;letter-spacing:.02em;
  text-align:left;padding:16px 20px;white-space:nowrap;
  border-bottom:2px solid transparent;
  border-image:var(--grad-brand) 1;
}
table.cmp thead th:first-child{border-top-left-radius:calc(var(--r-lg) - 1px);}
table.cmp thead th:last-child{border-top-right-radius:calc(var(--r-lg) - 1px);}
table.cmp tbody td{padding:16px 20px;border-bottom:1px solid var(--line);color:var(--t2);vertical-align:top;}
table.cmp tbody tr:last-child td{border-bottom:0;}
table.cmp tbody tr{transition:background-color .22s ease;}
table.cmp tbody tr:hover{background:#F2F4FD;}
table.cmp tbody tr:hover td:first-child{box-shadow:inset 3px 0 0 var(--neon-cyan);}
table.cmp td strong{color:var(--t1);font-weight:700;}

/* ============ 流程清单 ============ */
.steps{
  max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-card);overflow:hidden;
}
.steps li{
  position:relative;display:flex;align-items:flex-start;gap:16px;
  padding:20px 26px;border-bottom:1px solid var(--line);
  transition:transform .24s ease,background-color .24s ease;
}
.steps li:last-child{border-bottom:0;}
.steps li::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .24s ease;
}
.steps li:hover{transform:translateX(4px);background:#FAFBFF;}
.steps li:hover::before{opacity:1;}
.steps__num{
  flex-shrink:0;width:34px;height:34px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:15px;font-weight:800;color:#0A0913;
  background:var(--grad-brand);
}
.steps__txt strong{display:block;font-size:16px;color:var(--t1);font-weight:700;}
.steps__txt span{font-size:14px;color:var(--t2);}

/* ============ FAQ ============ */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-card);overflow:hidden;position:relative;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-brand);
  transform:scaleY(0);transform-origin:top;transition:transform .28s ease;
}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-item.is-open{border-color:rgba(124,92,255,.4);box-shadow:0 12px 28px rgba(20,18,42,.09);}
.faq-q{
  width:100%;background:transparent;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:700;color:var(--t1);
}
.faq-q:hover{color:#5A3DE0;}
.faq-q .ico{
  flex-shrink:0;width:26px;height:26px;border-radius:9px;position:relative;
  background:rgba(124,92,255,.12);border:1px solid rgba(124,92,255,.35);
  transition:transform .3s ease;
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;left:50%;top:50%;background:#5A3DE0;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .ico::before{width:12px;height:2px;}
.faq-q .ico::after{width:2px;height:12px;}
.faq-item.is-open .faq-q .ico{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--t2);}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;background-color:var(--ink-900);
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  padding:56px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(10,9,19,.9) 0%,rgba(30,27,58,.82) 50%,rgba(10,9,19,.9) 100%);
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-brand);
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(20px,2.6vw,28px);max-width:620px;}
.cta-inner p{margin-top:8px;color:var(--dk-t2);font-size:15px;max-width:560px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);padding:62px 0 26px;position:relative;}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--dk-t2);max-width:300px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--dk-t2);transition:color .22s ease,padding-left .22s ease;}
.footer-col a:hover{color:var(--neon-cyan);padding-left:4px;}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact__row{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--dk-t2);}
.footer-ico{
  flex-shrink:0;width:36px;height:36px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;font-size:14px;
  color:var(--neon-cyan);background:rgba(47,227,196,.08);
  border:1px solid rgba(47,227,196,.35);
}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(201,198,224,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .nav-toggle{display:block;}
  .nav-links{
    position:fixed;top:0;right:0;z-index:120;
    width:min(320px,84vw);height:100vh;
    flex-direction:column;align-items:stretch;gap:0;
    padding:96px 24px 40px;
    background:var(--ink-900);
    border-left:1px solid rgba(124,92,255,.35);
    box-shadow:-24px 0 60px rgba(0,0,0,.55);
    transform:translateX(106%);
    transition:transform .34s cubic-bezier(.4,0,.2,1);
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{
    padding:16px 4px;font-size:16px;color:var(--dk-t1);
    border-bottom:1px solid rgba(201,198,224,.12);
  }
  .nav-links a.is-active{transform:none;}
  .nav-links a.is-active::after{left:0;right:auto;width:34px;bottom:12px;}
  .nav-right .btn--primary{display:none;}
  .metric-band{grid-template-columns:repeat(2,1fr);gap:22px;}
  .metric + .metric::before{display:none;}
  .metric:nth-child(n+3){padding-top:18px;border-top:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:52px 0;}
  .section--tight{padding:44px 0;}
  .cat-hero{min-height:260px;padding:44px 0 52px;}
  .card-grid{grid-template-columns:1fr;}
  .metric-band{grid-template-columns:1fr 1fr;padding:20px;margin-top:-24px;}
  .steps li{padding:18px 18px;}
  .faq-q{padding:17px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 20px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:479px){
  .brand__text{font-size:16px;}
  .metric-band{grid-template-columns:1fr;}
  .metric:nth-child(n+2){padding-top:16px;border-top:1px solid var(--line);}
  .metric:nth-child(3){padding-top:0;border-top:0;}
}