/* roulang page: index */
:root{
  --lime:#C8FF3D;
  --purple:#7A5CFF;
  --magenta:#FF3D8B;
  --bg:#0C0812;
  --surface:#151020;
  --card:#1A1330;
  --card2:#201741;
  --line:rgba(255,255,255,.08);
  --line-hover:rgba(200,255,61,.35);
  --text:#E8E4F2;
  --muted:#A79FBE;
  --dim:#6F6884;
  --grad:linear-gradient(100deg,#C8FF3D 0%,#7A5CFF 50%,#FF3D8B 100%);
  --grad-soft:linear-gradient(100deg,rgba(200,255,61,.12) 0%,rgba(122,92,255,.12) 50%,rgba(255,61,139,.12) 100%);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --shadow:0 20px 50px rgba(0,0,0,.5);
  --shadow-hover:0 28px 70px rgba(0,0,0,.65),0 0 0 1px rgba(200,255,61,.3),0 12px 44px rgba(122,92,255,.22);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 500px at 12% -6%,rgba(122,92,255,.18),transparent 70%),
    radial-gradient(700px 420px at 92% 8%,rgba(200,255,61,.10),transparent 72%),
    radial-gradient(700px 500px at 60% 100%,rgba(255,61,139,.08),transparent 70%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px;box-shadow:0 0 0 4px rgba(200,255,61,.18)}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media (min-width:768px){.container-x{padding:0 32px}}
.section{padding:56px 0}
@media (min-width:768px){.section{padding:80px 0}}
@media (min-width:1024px){.section{padding:112px 0}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--lime);
  text-transform:none;font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--grad);display:inline-block}
.h2{font-size:clamp(24px,3.4vw,38px);line-height:1.25;font-weight:800;letter-spacing:.01em;margin-top:14px}
.h3{font-size:20px;line-height:1.4;font-weight:700}
.lead{color:var(--muted);font-size:15px;max-width:640px;margin-top:14px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.line-grad{height:1px;background:var(--grad);opacity:.5;border:0;margin:0}
.divider-grad{height:1px;width:100%;background:var(--grad);opacity:.35}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;height:68px;
  background:rgba(12,8,18,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:height .24s var(--ease),background .24s var(--ease);
}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--grad);opacity:.5}
.site-header.scrolled{height:60px;background:rgba(12,8,18,.95)}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.01em}
.logo-mark{
  width:32px;height:32px;border-radius:10px;position:relative;flex:0 0 auto;
  background:linear-gradient(140deg,#1A1330,#201741);
  border:1px solid transparent;
  background-clip:padding-box;
}
.logo-mark::after{
  content:"";position:absolute;inset:-1px;border-radius:11px;padding:1px;
  background:var(--grad);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.logo-mark span{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:var(--lime);letter-spacing:-.03em}
.logo-word b{color:var(--lime)}
.logo-word i{font-style:normal;color:var(--muted);font-weight:700}
.nav-desktop{display:none;align-items:center;gap:6px}
@media (min-width:920px){.nav-desktop{display:flex}}
.nav-link{
  position:relative;padding:10px 14px;font-size:15px;color:var(--muted);font-weight:600;
  transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);border-radius:2px;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--lime);text-shadow:0 0 12px rgba(200,255,61,.55)}
.nav-link.active::after{transform:scaleX(1);height:8px;bottom:0;opacity:.9;border-radius:999px}
.nav-cta{display:none}
@media (min-width:920px){.nav-cta{display:inline-flex}}
.burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);color:var(--text);
}
@media (min-width:920px){.burger{display:none}}
.burger span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text)}
.burger span::before{top:-6px}
.burger span::after{top:6px}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:120;
  background:#100B1C;border-left:1px solid rgba(200,255,61,.25);
  transform:translateX(105%);transition:transform .3s var(--ease);
  padding:22px 20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);font-size:18px;color:var(--muted)}
.drawer-item{
  display:flex;align-items:center;height:52px;padding:0 14px;border-radius:12px;
  color:var(--muted);font-weight:600;border-left:3px solid transparent;transition:all .2s var(--ease);
}
.drawer-item:hover{color:var(--text);background:rgba(255,255,255,.03)}
.drawer-item.active{color:var(--lime);border-left-color:var(--lime);background:rgba(200,255,61,.06)}
.drawer-cta{margin-top:20px;width:100%;justify-content:center}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:110;opacity:0;visibility:hidden;
  transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.drawer-overlay.show{opacity:1;visibility:visible}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-sm);font-weight:700;font-size:15px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--lime);color:#0C0812;border-radius:999px}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(200,255,61,.5),0 12px 34px rgba(200,255,61,.28);filter:brightness(1.05)}
.btn-ghost{color:var(--text);border:1px solid rgba(200,255,61,.45);border-radius:999px}
.btn-ghost:hover{background:rgba(200,255,61,.08);transform:translateY(-2px);box-shadow:0 10px 30px rgba(122,92,255,.2)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:12px}
.btn-link{color:var(--lime);font-weight:600;display:inline-flex;align-items:center;gap:6px;font-size:15px}
.btn-link i{font-style:normal;transition:transform .22s var(--ease)}
.btn-link:hover i{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;border-color:transparent;transform:none}

/* badges & tags */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;border:1px solid var(--line);color:var(--muted);background:rgba(255,255,255,.02);
}
.tag-lime{color:var(--lime);border-color:rgba(200,255,61,.4);background:rgba(200,255,61,.08)}
.tag-purple{color:#B7A6FF;border-color:rgba(122,92,255,.45);background:rgba(122,92,255,.12)}
.tag-magenta{color:#FF87B4;border-color:rgba(255,61,139,.42);background:rgba(255,61,139,.12)}
.badge{
  display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge-gradient{border:1px solid transparent;background:linear-gradient(#1A1330,#1A1330) padding-box,var(--grad) border-box;color:var(--lime)}

/* stat */
.stat{
  border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px;background:var(--card);
  transition:border-color .24s var(--ease),transform .24s var(--ease);
  animation:breathe 3s ease-in-out infinite;
}
.stat:hover{border-color:var(--line-hover);transform:translateY(-3px)}
@keyframes breathe{0%,100%{opacity:.85}50%{opacity:1}}
.stat-num{
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:clamp(28px,4vw,40px);line-height:1;font-weight:700;color:var(--lime);
}
.stat-num small{font-size:13px;color:var(--muted);margin-left:4px;font-family:inherit;vertical-align:super;font-weight:600}
.stat-label{font-size:13px;color:var(--muted);margin-top:10px}

/* cards */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--shadow);position:relative;overflow:hidden;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--shadow-hover)}
.card-lg{border-radius:var(--r-lg);padding:28px}
.card-flat{background:var(--card2)}
.num-block{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;font-size:14px;font-weight:700;color:var(--lime);
  border:1px solid rgba(200,255,61,.35);background:rgba(200,255,61,.06);
}
.thumb{position:relative;border-radius:var(--r-md);overflow:hidden;background:var(--card);border:1px solid var(--line)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.thumb::after{content:"";position:absolute;inset:auto 0 0 0;height:52%;background:linear-gradient(180deg,transparent,rgba(12,8,18,.78))}
.card:hover .thumb img,.thumb:hover img{transform:scale(1.04)}
.avatar{
  width:44px;height:44px;border-radius:999px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;font-weight:800;color:#0C0812;
  background:var(--grad);
}
.stars{color:var(--lime);letter-spacing:2px;font-size:13px}

/* hero */
.hero{position:relative;overflow:hidden;padding:64px 0 56px}
@media (min-width:1024px){.hero{padding:96px 0 88px}}
.hero-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;z-index:0;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(12,8,18,.94) 0%,rgba(12,8,18,.78) 42%,rgba(12,8,18,.72) 100%);
}
.hero-inner{display:grid;gap:44px;align-items:center}
@media (min-width:1024px){.hero-inner{grid-template-columns:1.05fr .95fr;gap:56px}}
.hero h1{
  font-size:clamp(30px,5vw,54px);line-height:1.15;font-weight:800;margin-top:16px;letter-spacing:.01em;
}
.hero-sub{color:var(--muted);font-size:16px;margin-top:18px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:36px}
@media (min-width:640px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.hero-media{position:relative;min-height:280px}
.hero-shot{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);position:relative;
}
.hero-shot.main{aspect-ratio:16/10}
.hero-shot.sub{
  position:absolute;right:-6px;bottom:-28px;width:52%;aspect-ratio:4/3;
  border:1px solid rgba(200,255,61,.28);
}
.hero-shot img{width:100%;height:100%;object-fit:cover}
@media (max-width:639px){.hero-shot.sub{display:none}}

/* bento */
.bento{display:grid;gap:20px;margin-top:40px}
@media (min-width:640px){.bento{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.bento{grid-template-columns:repeat(3,minmax(0,1fr))}}
.bento-wide{grid-column:span 1}
@media (min-width:1024px){.bento-wide{grid-column:span 2}}
.bento-inner{display:grid;gap:22px}
@media (min-width:768px){.bento-inner{grid-template-columns:1fr 1fr}}

/* steps */
.steps{display:grid;gap:18px;margin-top:30px}
@media (min-width:768px){.steps{grid-template-columns:repeat(3,minmax(0,1fr))}}
.step{position:relative;padding:22px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--card2)}
.step::after{
  content:"";position:absolute;top:38px;right:-18px;width:18px;height:1px;background:var(--grad);opacity:.7;
}
.step:last-child::after{display:none}
@media (max-width:767px){.step::after{display:none}}

/* list */
.list-row{
  display:grid;gap:18px;align-items:center;padding:20px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--card);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
@media (min-width:640px){.list-row{grid-template-columns:180px 1fr}}
.list-row:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--shadow-hover)}
.list-row:hover .thumb img{transform:scale(1.04)}
.list-row h3{transition:color .22s var(--ease)}
.list-row:hover h3{color:var(--lime)}

/* faq */
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--card);
  margin-bottom:14px;overflow:hidden;transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item[open]{border-color:rgba(200,255,61,.35);box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;display:flex;align-items:center;gap:14px;
  font-weight:700;font-size:16px;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .q{
  width:30px;height:30px;flex:0 0 auto;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;color:var(--lime);border:1px solid rgba(200,255,61,.35);background:rgba(200,255,61,.06);
}
.faq-item summary .arrow{margin-left:auto;color:var(--lime);transition:transform .26s var(--ease);font-size:14px}
.faq-item[open] summary .arrow{transform:rotate(180deg)}
.faq-body{padding:0 24px 22px 68px;color:var(--muted);font-size:15px;position:relative}
.faq-body::before{content:"";position:absolute;left:24px;top:2px;bottom:22px;width:3px;border-radius:3px;background:var(--grad)}

/* pricing */
.price-grid{display:grid;gap:22px;margin-top:42px}
@media (min-width:1024px){.price-grid{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch}}
.price-card{display:flex;flex-direction:column}
.price-card.featured{border-color:rgba(200,255,61,.4);box-shadow:var(--shadow-hover)}
.price-card.featured::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.price-amount{font-family:"SFMono-Regular",Menlo,Consolas,monospace;font-size:34px;font-weight:700;color:var(--text);line-height:1}
.price-amount small{font-size:13px;color:var(--muted);margin-left:6px;font-family:inherit}
.feat-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);padding:7px 0}
.feat-list li::before{
  content:"";width:16px;height:16px;flex:0 0 auto;margin-top:5px;border-radius:5px;
  background:rgba(200,255,61,.12);border:1px solid rgba(200,255,61,.45);
}

/* cta band */
.cta-band{
  border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;
  background:var(--grad-soft);display:grid;gap:22px;align-items:center;
}
@media (min-width:768px){.cta-band{grid-template-columns:1fr auto;padding:38px 42px}}

/* footer */
.site-footer{
  margin-top:72px;border-top:1px solid var(--line);background:#0A0710;
  padding:56px 0 130px;position:relative;z-index:1;
}
@media (min-width:920px){.site-footer{padding-bottom:72px}}
.footer-grid{display:grid;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr}}
.footer-col{position:relative}
@media (min-width:1024px){
  .footer-col + .footer-col{padding-left:28px}
  .footer-col + .footer-col::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:1px;background:var(--grad);opacity:.35}
}
.footer-title{font-size:14px;font-weight:700;color:var(--text);letter-spacing:.06em;margin-bottom:16px}
.footer-link{display:block;color:var(--muted);font-size:14px;padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-link:hover{color:var(--lime);transform:translateX(3px)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--dim);
}

/* float cta */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:90;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease);
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
@media (max-width:919px){
  .float-cta{right:0;left:0;bottom:0}
  .float-cta .btn{width:100%;border-radius:0;padding:16px;padding-bottom:calc(16px + env(safe-area-inset-bottom))}
}
.form-input{
  width:100%;padding:13px 16px;border-radius:12px;background:#120D1E;border:1px solid var(--line);
  color:var(--text);font-size:14px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.form-input::placeholder{color:var(--dim)}
.form-input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(200,255,61,.18)}
.empty-state{
  border:1px dashed rgba(255,255,255,.14);border-radius:var(--r-md);padding:44px 24px;text-align:center;background:var(--card);
}
.empty-shape{
  width:56px;height:56px;margin:0 auto 16px;border-radius:18px;
  border:1px solid transparent;background:linear-gradient(#1A1330,#1A1330) padding-box,var(--grad) border-box;
}
.line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* roulang page: article */
:root{
    --lime:#C8FF3D;
    --purple:#7A5CFF;
    --magenta:#FF3D8B;
    --bg:#0C0812;
    --surface:#151020;
    --card:#1A1330;
    --card2:#201741;
    --line:rgba(255,255,255,.08);
    --line-hot:rgba(200,255,61,.35);
    --text:#E8E4F2;
    --dim:#A79FBE;
    --muted:#6F6884;
    --grad:linear-gradient(100deg,#C8FF3D 0%,#7A5CFF 50%,#FF3D8B 100%);
    --r-lg:28px;
    --r-md:20px;
    --r-sm:14px;
    --shadow:0 20px 50px rgba(0,0,0,.5);
    --shadow-hover:0 28px 70px rgba(0,0,0,.65), 0 0 0 1px rgba(200,255,61,.3), 0 12px 44px rgba(122,92,255,.22);
    --ease:cubic-bezier(.4,0,.2,1);
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    padding-bottom:0;
  }
  img{max-width:100%;display:block;}
  a{color:var(--lime);text-decoration:none;transition:color .22s var(--ease),opacity .22s var(--ease);}
  a:hover{color:#fff;}
  button{font-family:inherit;}
  h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;}
  p{margin:0 0 1.2em;}
  ul,ol{margin:0 0 1.2em;padding-left:1.1em;}

  :focus-visible{outline:2px solid var(--lime);outline-offset:3px;box-shadow:0 0 0 4px rgba(200,255,61,.18);border-radius:6px;}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media(min-width:920px){.container-x{padding-left:32px;padding-right:32px;}}

  .label{font-size:13px;letter-spacing:.08em;color:var(--dim);font-weight:600;}
  .lead{color:var(--dim);font-size:15px;line-height:1.85;}
  .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
  .grad-line{height:1px;background:var(--grad);opacity:.5;border:0;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(12,8,18,.82);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    transition:background .24s var(--ease),box-shadow .24s var(--ease);
  }
  .site-header::after{content:"";display:block;height:1px;background:var(--grad);opacity:.5;}
  .site-header.is-scrolled{background:rgba(10,6,16,.95);box-shadow:0 12px 34px rgba(0,0,0,.55);}
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;transition:height .24s var(--ease);}
  .site-header.is-scrolled .nav-wrap{height:60px;}

  .logo{display:flex;align-items:center;gap:10px;color:var(--text);}
  .logo:hover{color:var(--text);}
  .logo-mark{
    width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
    background:linear-gradient(140deg,rgba(200,255,61,.16),rgba(122,92,255,.2));
    border:1px solid rgba(200,255,61,.45);
    box-shadow:0 0 18px rgba(200,255,61,.18);
    font-size:13px;font-weight:800;color:var(--lime);letter-spacing:-.02em;
  }
  .logo-word{font-size:19px;font-weight:800;letter-spacing:.01em;}
  .logo-word b{color:var(--lime);}
  .logo-word i{font-style:normal;color:var(--dim);font-weight:700;}

  .nav-desktop{display:none;align-items:center;gap:6px;}
  .nav-link{
    position:relative;display:inline-block;padding:10px 14px;border-radius:12px;
    font-size:15px;font-weight:600;color:var(--dim);
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
    background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
  }
  .nav-link:hover{color:var(--text);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--lime);text-shadow:0 0 12px rgba(200,255,61,.55);}
  .nav-link.active::after{transform:scaleX(1);height:6px;border-radius:99px;bottom:0;}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 24px;border-radius:var(--r-sm);border:1px solid transparent;
    font-size:15px;font-weight:700;cursor:pointer;
    transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
  }
  .btn-primary{background:var(--lime);color:#0C0812;border-color:var(--lime);}
  .btn-primary:hover{color:#0C0812;filter:brightness(1.06);box-shadow:0 0 0 1px rgba(200,255,61,.4),0 12px 36px rgba(200,255,61,.28);transform:translateY(-2px);}
  .btn-ghost{
    background:rgba(255,255,255,.02);color:var(--text);
    border:1px solid transparent;
    background-image:linear-gradient(var(--surface),var(--surface)),var(--grad);
    background-origin:border-box;background-clip:padding-box,border-box;
  }
  .btn-ghost:hover{color:var(--text);background-image:linear-gradient(rgba(200,255,61,.08),rgba(200,255,61,.08)),var(--grad);transform:translateY(-2px);}
  .btn-sm{padding:10px 18px;font-size:14px;border-radius:12px;}
  .btn-pill{border-radius:999px;}
  .btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--lime);font-weight:700;font-size:15px;}
  .btn-text span{transition:transform .22s var(--ease);}
  .btn-text:hover span{transform:translateX(4px);}

  .burger{
    display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:rgba(255,255,255,.03);cursor:pointer;
  }
  .burger span,.burger span::before,.burger span::after{
    content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--text);margin:0 auto;transition:.22s var(--ease);
  }
  .burger span::before{transform:translateY(-6px);}
  .burger span::after{transform:translateY(4px);}

  /* ---------- drawer ---------- */
  .drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:70;}
  .drawer-mask.open{opacity:1;pointer-events:auto;}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;z-index:80;
    background:var(--surface);border-left:1px solid transparent;
    background-image:linear-gradient(var(--surface),var(--surface)),var(--grad);
    background-origin:border-box;background-clip:padding-box,border-box;
    transform:translateX(102%);transition:transform .28s var(--ease);
    padding:26px 22px;overflow-y:auto;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-item{
    display:flex;align-items:center;height:52px;padding:0 12px;border-radius:12px;
    font-size:16px;font-weight:600;color:var(--dim);
  }
  .drawer-item:hover{color:var(--text);background:rgba(255,255,255,.03);}
  .drawer-item.active{color:var(--lime);border-left:3px solid var(--lime);background:rgba(200,255,61,.06);}
  body.lock{overflow:hidden;}

  /* ---------- page banner ---------- */
  .page-banner{
    position:relative;overflow:hidden;
    background-image:linear-gradient(90deg,rgba(12,8,18,.94) 0%,rgba(12,8,18,.78) 55%,rgba(12,8,18,.9) 100%),url("/assets/images/backpic/back-2.png");
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--line);
  }
  .page-banner-inner{padding:44px 0 40px;}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;}
  .crumb a{color:var(--muted);}
  .crumb a:hover{color:var(--lime);}
  .crumb .sep{opacity:.6;}
  .crumb .now{color:var(--dim);max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

  .sec-title{position:relative;padding-left:16px;font-size:clamp(24px,3.4vw,38px);line-height:1.25;}
  .sec-title::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--grad);}

  /* ---------- article ---------- */
  .article-shell{max-width:760px;margin:0 auto;}
  .article-head h1{font-size:clamp(26px,4vw,40px);line-height:1.3;}
  .meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;margin-top:20px;font-size:13px;color:var(--muted);}
  .meta-chip{display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.02);font-size:12.5px;color:var(--dim);}
  .meta-chip.tag{border-color:rgba(200,255,61,.35);color:var(--lime);}

  .article-card{
    margin-top:36px;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-lg);box-shadow:var(--shadow);
    padding:20px;
  }
  @media(min-width:920px){.article-card{padding:48px;}}

  .article-body{font-size:17px;line-height:1.95;color:var(--text);}
  .article-body > *:first-child{margin-top:0;}
  .article-body h2{
    position:relative;font-size:clamp(21px,2.6vw,27px);line-height:1.35;
    margin:2em 0 .9em;padding-bottom:14px;
  }
  .article-body h2::after{content:"";position:absolute;left:0;bottom:0;width:64px;height:3px;border-radius:3px;background:var(--grad);}
  .article-body h3{font-size:20px;line-height:1.45;margin:1.7em 0 .7em;color:#fff;}
  .article-body h4{font-size:17px;margin:1.5em 0 .6em;color:var(--lime);}
  .article-body p{margin-bottom:1.4em;color:var(--text);}
  .article-body ul,.article-body ol{padding-left:0;list-style:none;margin-bottom:1.5em;}
  .article-body ul li{position:relative;padding-left:24px;margin-bottom:.6em;}
  .article-body ul li::before{content:"";position:absolute;left:4px;top:12px;width:8px;height:8px;border-radius:2px;background:var(--lime);box-shadow:0 0 10px rgba(200,255,61,.5);}
  .article-body ol{counter-reset:li;padding-left:0;}
  .article-body ol li{position:relative;padding-left:34px;margin-bottom:.6em;counter-increment:li;}
  .article-body ol li::before{
    content:counter(li);position:absolute;left:0;top:4px;width:22px;height:22px;border-radius:7px;
    display:grid;place-items:center;font-size:12px;font-weight:800;color:var(--lime);
    border:1px solid rgba(200,255,61,.4);background:rgba(200,255,61,.07);
  }
  .article-body blockquote{
    margin:1.6em 0;padding:6px 0 6px 20px;border-left:3px solid transparent;
    border-image:var(--grad) 1;font-style:italic;color:var(--dim);
  }
  .article-body img{border-radius:16px;margin:1.6em 0;border:1px solid var(--line);background:#1A1330;}
  .article-body figure{margin:1.6em 0;}
  .article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
  .article-body a{color:var(--lime);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;text-decoration-color:rgba(200,255,61,.5);}
  .article-body a:hover{color:#fff;text-decoration-color:#fff;}
  .article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
  .article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
  .article-body th{background:rgba(255,255,255,.03);color:#fff;font-weight:700;}
  .article-body strong{color:#fff;}
  .article-body hr{border:0;height:1px;background:var(--grad);opacity:.35;margin:2em 0;}

  .empty-state{
    text-align:center;padding:56px 20px;
  }
  .empty-orb{
    width:96px;height:96px;margin:0 auto 22px;border-radius:28px;
    border:1px solid transparent;
    background-image:linear-gradient(var(--card),var(--card)),var(--grad);
    background-origin:border-box;background-clip:padding-box,border-box;
  }

  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;}
  .tag-pill{
    display:inline-flex;align-items:center;padding:7px 15px;border-radius:999px;
    font-size:13px;font-weight:600;color:var(--dim);
    border:1px solid var(--line);background:rgba(255,255,255,.02);
    transition:.22s var(--ease);
  }
  .tag-pill:hover{color:var(--lime);border-color:var(--line-hot);background:rgba(200,255,61,.06);}

  .post-nav{display:grid;gap:16px;margin-top:34px;}
  @media(min-width:768px){.post-nav{grid-template-columns:1fr 1fr;}}
  .post-card{
    display:block;padding:22px;border-radius:var(--r-md);
    background:var(--card);border:1px solid var(--line);
    transition:.24s var(--ease);
  }
  .post-card:hover{transform:translateY(-4px);border-color:var(--line-hot);box-shadow:var(--shadow-hover);}
  .post-card .k{font-size:12.5px;color:var(--muted);letter-spacing:.06em;}
  .post-card .v{font-size:16px;font-weight:700;color:var(--text);margin-top:8px;line-height:1.5;}
  .post-card:hover .v{color:var(--lime);}
  .post-card.disabled{opacity:.45;pointer-events:none;}

  .related-grid{display:grid;gap:24px;grid-template-columns:1fr;}
  @media(min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr);}}
  .rel-card{
    display:flex;flex-direction:column;overflow:hidden;
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--shadow);transition:.24s var(--ease);
  }
  .rel-card:hover{transform:translateY(-4px);border-color:var(--line-hot);box-shadow:var(--shadow-hover);}
  .rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#1A1330;}
  .rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .rel-card:hover .rel-thumb img{transform:scale(1.04);}
  .rel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,8,18,0) 40%,rgba(12,8,18,.85) 100%);}
  .rel-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .rel-body h3{font-size:17px;line-height:1.5;}
  .rel-card:hover h3{color:var(--lime);}
  .rel-body .ex{font-size:14px;color:var(--dim);line-height:1.75;}
  .rel-body .ft{margin-top:auto;display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted);}

  .cta-band{
    position:relative;overflow:hidden;margin:72px 0 0;
    border-radius:var(--r-lg);border:1px solid var(--line);
    background:linear-gradient(100deg,rgba(200,255,61,.1),rgba(122,92,255,.1) 50%,rgba(255,61,139,.08));
    padding:32px 26px;
    display:flex;flex-direction:column;gap:20px;
  }
  @media(min-width:920px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:36px 44px;}}

  .progress-bar{
    position:fixed;top:0;left:0;height:2px;width:0;z-index:90;
    background:var(--grad);box-shadow:0 0 12px rgba(200,255,61,.6);
    transition:width .1s linear;
  }

  /* ---------- floating cta ---------- */
  .float-cta{
    position:fixed;left:20px;right:20px;bottom:16px;z-index:55;
    display:flex;align-items:center;justify-content:center;
    padding:14px 20px;border-radius:var(--r-sm);
    background:var(--lime);color:#0C0812;font-weight:800;font-size:15px;
    box-shadow:0 14px 40px rgba(0,0,0,.55);
    opacity:0;transform:translateY(16px);pointer-events:none;
    transition:opacity .26s var(--ease),transform .26s var(--ease);
  }
  .float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
  .float-cta:hover{color:#0C0812;filter:brightness(1.06);}
  @media(min-width:920px){
    .float-cta{left:auto;right:32px;bottom:32px;padding:15px 28px;border-radius:999px;}
  }

  /* ---------- footer ---------- */
  .site-footer{margin-top:96px;background:var(--surface);border-top:1px solid var(--line);padding:56px 0 140px;}
  @media(min-width:920px){.site-footer{padding-bottom:120px;}}
  .footer-grid{display:grid;gap:36px;grid-template-columns:1fr;}
  @media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:0;}}
  .footer-col{position:relative;}
  @media(min-width:1024px){
    .footer-col{padding:0 28px;}
    .footer-col:first-child{padding-left:0;}
    .footer-col:not(:first-child)::before{
      content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--grad);opacity:.3;
    }
    .footer-col:last-child{padding-right:0;}
  }
  .footer-title{font-size:13px;letter-spacing:.08em;color:#fff;font-weight:800;margin-bottom:14px;}
  .footer-link{display:block;font-size:14px;color:var(--dim);padding:6px 0;transition:.22s var(--ease);}
  .footer-link:hover{color:var(--lime);transform:translateX(3px);}
  .footer-bottom{
    margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
    font-size:13px;color:var(--muted);
  }

  .form-input{
    width:100%;padding:12px 14px;border-radius:12px;
    background:rgba(255,255,255,.03);border:1px solid var(--line);
    color:var(--text);font-size:14px;font-family:inherit;
    transition:.22s var(--ease);
  }
  .form-input::placeholder{color:var(--muted);}
  .form-input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(200,255,61,.16);}

/* roulang page: category1 */
:root{
  --lime:#C8FF3D;
  --violet:#7A5CFF;
  --magenta:#FF3D8B;
  --bg:#0C0812;
  --surface:#151020;
  --card:#1A1330;
  --card2:#201741;
  --line:rgba(255,255,255,.08);
  --line-hover:rgba(200,255,61,.35);
  --text:#E8E4F2;
  --sub:#A79FBE;
  --dim:#6F6884;
  --grad:linear-gradient(100deg,#C8FF3D 0%,#7A5CFF 50%,#FF3D8B 100%);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --r-pill:999px;
  --shadow:0 20px 50px rgba(0,0,0,.5);
  --shadow-hover:0 28px 70px rgba(0,0,0,.65);
  --t:220ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;box-shadow:0 0 0 5px rgba(200,255,61,.16);border-radius:6px}
::selection{background:rgba(200,255,61,.28)}

.container-x{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}

.section{padding:56px 0}
@media(min-width:768px){.section{padding:80px 0}}
@media(min-width:1280px){.section{padding:96px 0}}

.eyebrow{font-size:13px;letter-spacing:.08em;color:var(--lime);font-weight:700}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.grad-line{height:1px;background:var(--grad);opacity:.5}
h1{font-size:clamp(30px,5vw,50px);line-height:1.16;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(24px,3.4vw,36px);line-height:1.25;font-weight:800}
h3{font-size:20px;line-height:1.4;font-weight:700}
.lead{color:var(--sub);font-size:15px;line-height:1.9}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(12,8,18,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.site-header::after{content:"";display:block;height:1px;background:var(--grad);opacity:.5}
.site-header.scrolled{background:rgba(12,8,18,.95)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px;transition:height var(--t)}
.site-header.scrolled .nav-wrap{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#1A1330,#201741);
  border:1px solid transparent;
  background-image:linear-gradient(150deg,#1A1330,#201741),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 18px rgba(122,92,255,.35);
}
.logo-mark span{font-size:13px;font-weight:800;color:var(--lime)}
.logo-word{font-size:19px;font-weight:800;letter-spacing:.01em;color:var(--text)}
.logo-word b{color:var(--lime)}
.logo-word i{font-style:normal;color:var(--sub);font-weight:700}
.nav-desktop{display:none;align-items:center;gap:6px}
@media(min-width:920px){.nav-desktop{display:flex}}
.nav-link{
  position:relative;padding:10px 14px;font-size:15px;color:var(--sub);
  border-radius:10px;transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--lime);text-shadow:0 0 12px rgba(200,255,61,.55)}
.nav-link.active::before{
  content:"";position:absolute;left:14px;right:14px;bottom:-10px;height:8px;
  border-radius:var(--r-pill);background:var(--grad);opacity:.9;
}
.nav-cta{white-space:nowrap}
.burger{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--card);display:grid;place-items:center;cursor:pointer;transition:border-color var(--t),background var(--t);
}
.burger span,.burger span::before,.burger span::after{
  content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform var(--t),opacity var(--t);
}
.burger span::before{transform:translateY(-6px)}
.burger span::after{transform:translateY(4px)}
.burger:hover{border-color:var(--line-hover)}
@media(min-width:920px){.burger{display:none}}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity var(--t);z-index:90}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;z-index:95;
  background:var(--surface);border-left:1px solid rgba(200,255,61,.25);
  transform:translateX(102%);transition:transform 260ms cubic-bezier(.4,0,.2,1);
  padding:22px 20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer a.drawer-item{
  display:flex;align-items:center;height:52px;padding:0 14px;border-radius:12px;
  color:var(--sub);font-size:16px;border-left:3px solid transparent;transition:all var(--t);
}
.drawer a.drawer-item:hover{background:var(--card);color:var(--text)}
.drawer a.drawer-item.active{color:var(--lime);border-left-color:var(--lime);background:rgba(200,255,61,.07)}
.drawer-close{margin-left:auto;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--card);cursor:pointer}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-sm);padding:12px 22px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;transition:all var(--t);white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--lime);color:#0C0812}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 10px 30px rgba(200,255,61,.28)}
.btn-ghost{
  background:transparent;color:var(--text);border-color:transparent;
  background-image:linear-gradient(#0C0812,#0C0812),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.btn-ghost:hover{background-image:linear-gradient(rgba(200,255,61,.08),rgba(200,255,61,.08)),var(--grad)}
.btn-pill{border-radius:var(--r-pill)}
.btn:active{transform:translateY(1px)}
.text-link{color:var(--lime);font-weight:700;display:inline-flex;align-items:center;gap:6px;transition:gap var(--t)}
.text-link:hover{gap:10px}

/* ---------- badges / chips ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:700;border:1px solid var(--line);color:var(--sub);background:rgba(255,255,255,.03);
}
.badge-lime{color:var(--lime);border-color:rgba(200,255,61,.45);background:rgba(200,255,61,.08)}
.badge-violet{color:#B7A6FF;border-color:rgba(122,92,255,.45);background:rgba(122,92,255,.12)}
.badge-magenta{color:#FF9AC2;border-color:rgba(255,61,139,.45);background:rgba(255,61,139,.12)}

.filter-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  padding:8px 18px;border-radius:var(--r-pill);font-size:14px;font-weight:700;
  border:1px solid var(--line);color:var(--sub);background:var(--card);transition:all var(--t);cursor:pointer;
}
.chip:hover{color:var(--text);border-color:var(--line-hover)}
.chip.is-active{background:var(--lime);color:#0C0812;border-color:transparent;box-shadow:0 8px 24px rgba(200,255,61,.25)}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  filter:saturate(1.05);
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,8,18,.96) 0%,rgba(12,8,18,.86) 45%,rgba(122,92,255,.28) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:56px 0 48px}
@media(min-width:768px){.page-hero-inner{padding:80px 0 64px}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:18px}
.crumb a{color:var(--sub)}
.crumb a:hover{color:var(--lime)}
.crumb .sep{opacity:.6}

/* ---------- cards ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow);overflow:hidden;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--shadow-hover),0 12px 44px rgba(122,92,255,.22)}
.card:hover h3{color:var(--lime)}
.card-body{padding:22px}
.card-title{font-weight:700;transition:color var(--t)}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--dim)}
.card-img{position:relative;aspect-ratio:16/9;background:var(--card2);overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform 260ms cubic-bezier(.4,0,.2,1)}
.card:hover .card-img img{transform:scale(1.04)}
.card-img::after{content:"";position:absolute;inset:auto 0 0 0;height:52%;background:linear-gradient(to top,rgba(12,8,18,.78),transparent)}
.card-img .tag-on-img{position:absolute;left:14px;top:14px;z-index:2}

.feature-card{
  display:grid;gap:0;background:var(--card2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow);transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.feature-card:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--shadow-hover),0 12px 44px rgba(122,92,255,.22)}
@media(min-width:768px){.feature-card{grid-template-columns:1.15fr 1fr}}
.feature-card .fc-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--card)}
.feature-card .fc-media img{width:100%;height:100%;object-fit:cover;transition:transform 260ms cubic-bezier(.4,0,.2,1)}
.feature-card:hover .fc-media img{transform:scale(1.04)}
.feature-card:hover .fc-title{color:var(--lime)}
.fc-media::after{content:"";position:absolute;inset:auto 0 0 0;height:50%;background:linear-gradient(to top,rgba(12,8,18,.7),transparent)}

.timeline{position:relative;padding-left:22px}
.timeline::before{content:"";position:absolute;left:4px;top:6px;bottom:6px;width:2px;background:var(--grad);opacity:.55;border-radius:2px}
.timeline li{position:relative;padding:0 0 16px 4px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-22px;top:9px;width:10px;height:10px;border-radius:50%;
  background:var(--bg);border:2px solid var(--lime);box-shadow:0 0 10px rgba(200,255,61,.5);
}
.timeline .t-date{font-size:13px;color:var(--dim)}
.timeline .t-title{font-size:15px;font-weight:700;color:var(--text);transition:color var(--t)}
.timeline a:hover .t-title{color:var(--lime)}

/* ---------- sidebar ---------- */
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--shadow);
}
.side-title{font-size:13px;letter-spacing:.08em;color:var(--lime);font-weight:700;margin-bottom:14px}
.side-link{
  display:flex;align-items:center;justify-content:space-between;height:46px;padding:0 12px;
  border-radius:12px;color:var(--sub);font-size:15px;transition:all var(--t);
}
.side-link:hover{background:var(--card2);color:var(--text);border-left:3px solid var(--lime)}
.side-link.is-current{color:var(--lime);background:rgba(200,255,61,.08);border-left:3px solid var(--lime)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  padding:6px 13px;border-radius:var(--r-pill);font-size:13px;color:var(--sub);
  border:1px solid var(--line);background:var(--card);transition:all var(--t);
}
.tag-cloud a:hover{color:var(--lime);border-color:var(--line-hover);transform:translateY(-2px)}
.stat-block{
  background:var(--card2);border:1px solid var(--line);border-radius:var(--r-md);padding:18px;
}
.stat-num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:34px;font-weight:800;color:var(--lime);line-height:1;animation:breathe 3s ease-in-out infinite}
.stat-unit{font-size:13px;color:var(--sub);margin-left:6px;vertical-align:super}
.stat-label{font-size:13px;color:var(--dim);margin-top:8px}
@keyframes breathe{0%,100%{opacity:1}50%{opacity:.85}}

/* ---------- faq ---------- */
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:0 22px;margin-bottom:14px;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item[open]{border-color:var(--line-hover);box-shadow:0 12px 40px rgba(0,0,0,.5);position:relative}
.faq-item[open]::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:var(--grad)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;
  padding:20px 0;font-size:16px;font-weight:700;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.q-mark{
  flex:none;width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  font-size:13px;font-weight:800;color:#0C0812;background:var(--lime);
}
.faq-arrow{margin-left:auto;flex:none;color:var(--sub);transition:transform var(--t)}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--lime)}
.faq-answer{padding:0 0 22px 40px;color:var(--sub);font-size:15px;line-height:1.9}

/* ---------- pager ---------- */
.pager{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:32px}
.pager a,.pager span{
  min-width:42px;height:42px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--sub);
  font-size:14px;font-weight:700;transition:all var(--t);
}
.pager a:hover{color:var(--lime);border-color:var(--line-hover)}
.pager .is-current{background:var(--lime);color:#0C0812;border-color:transparent}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--card2);padding:28px;
}
.cta-band::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:.11}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.18;
  background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:18px 18px;
}
.cta-band > *{position:relative;z-index:2}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity 260ms ease,transform 260ms ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
@media(max-width:639px){
  .float-cta{right:0;left:0;bottom:0}
  .float-cta .btn{width:100%;border-radius:0;padding:16px;padding-bottom:calc(16px + env(safe-area-inset-bottom))}
}

/* ---------- footer ---------- */
.site-footer{margin-top:56px;background:var(--surface);border-top:1px solid var(--line);padding:56px 0 140px;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);opacity:.5}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1100px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:0}
  .footer-col{padding:0 28px}
  .footer-col:first-child{padding-left:0}
  .footer-col + .footer-col{border-left:1px solid transparent;border-image:var(--grad) 1;border-image-slice:0 0 0 1}}
.footer-title{font-size:13px;letter-spacing:.08em;color:var(--lime);font-weight:700;margin-bottom:14px}
.footer-link{display:block;color:var(--sub);font-size:14px;padding:6px 0;transition:color var(--t),transform var(--t)}
a.footer-link:hover{color:var(--lime);transform:translateX(3px)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--dim);
}
.form-input{
  width:100%;background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:11px 14px;font-size:14px;color:var(--text);transition:border-color var(--t),box-shadow var(--t);
}
.form-input::placeholder{color:var(--dim)}
.form-input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 4px rgba(200,255,61,.16)}

/* misc */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.divider{height:1px;background:var(--line);margin:36px 0}
.note-box{
  border-left:3px solid transparent;border-image:var(--grad) 1;border-image-slice:0 0 0 1;
  background:rgba(122,92,255,.07);border-radius:0 var(--r-sm) var(--r-sm) 0;padding:16px 20px;color:var(--sub);font-size:14px;
}

/* roulang page: category2 */
:root{
  --bg:#0C0812;
  --surface:#151020;
  --card:#1A1330;
  --card-2:#201741;
  --line:rgba(255,255,255,.08);
  --line-hot:rgba(200,255,61,.35);
  --text:#E8E4F2;
  --sub:#A79FBE;
  --dim:#6F6884;
  --lime:#C8FF3D;
  --purple:#7A5CFF;
  --pink:#FF3D8B;
  --grad:linear-gradient(100deg,#C8FF3D 0%,#7A5CFF 50%,#FF3D8B 100%);
  --grad-soft:linear-gradient(100deg,rgba(200,255,61,.14) 0%,rgba(122,92,255,.12) 50%,rgba(255,61,139,.12) 100%);
  --r-xl:28px;
  --r-lg:20px;
  --r-sm:14px;
  --shadow:0 20px 50px rgba(0,0,0,.5);
  --shadow-hover:0 28px 70px rgba(0,0,0,.65),0 0 0 1px rgba(200,255,61,.3),0 12px 44px rgba(122,92,255,.22);
  --ease:cubic-bezier(.4,0,.2,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(760px 420px at 82% -6%,rgba(122,92,255,.16),transparent 70%),
    radial-gradient(620px 380px at 6% 8%,rgba(200,255,61,.08),transparent 70%),
    radial-gradient(700px 420px at 50% 108%,rgba(255,61,139,.10),transparent 72%);
  z-index:0;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.2;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;box-shadow:0 0 0 4px rgba(200,255,61,.22);border-radius:6px}
::selection{background:rgba(200,255,61,.32);color:#0C0812}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:2}
@media(min-width:1024px){.container-x{padding:0 32px}}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  height:68px;
  background:rgba(12,8,18,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:var(--grad);opacity:.5;
}
.site-header.is-scrolled{height:60px;background:rgba(12,8,18,.94);box-shadow:0 14px 40px rgba(0,0,0,.55)}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,#1A1330,#201741);
  border:1px solid transparent;
  background-image:linear-gradient(150deg,#1A1330,#201741),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 18px rgba(122,92,255,.28);
}
.logo-mark span{font-size:13px;font-weight:800;color:var(--lime);letter-spacing:.02em}
.logo-word{font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--text)}
.logo-word b{color:var(--lime);font-weight:800}
.logo-word i{font-style:normal;color:var(--sub);font-weight:700}
.nav-desktop{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--sub);font-weight:500;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--grad);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{
  color:var(--lime);text-shadow:0 0 12px rgba(200,255,61,.55);
}
.nav-link.active::before{
  content:"";position:absolute;left:14px;right:14px;bottom:-7px;height:8px;border-radius:999px;
  background:var(--grad);opacity:.9;
}
.nav-link.active::after{display:none}
.burger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  position:relative;
}
.burger span,.burger span::before,.burger span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
  transform:translateX(-50%);transition:.24s var(--ease);
}
.burger span{top:50%;margin-top:-1px}
.burger span::before{content:"";top:-6px;left:0;transform:none}
.burger span::after{content:"";top:6px;left:0;transform:none}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);background:var(--lime)}
.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);background:var(--lime)}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-weight:700;font-size:15px;letter-spacing:.01em;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:11px}
.btn-primary{
  background:var(--lime);color:#0C0812;
  box-shadow:0 10px 26px rgba(200,255,61,.24);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 14px 36px rgba(200,255,61,.4);transform:translateY(-2px)}
.btn-ghost{
  color:var(--text);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(200,255,61,.04),rgba(200,255,61,.04)),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.btn-ghost:hover{background-image:linear-gradient(rgba(200,255,61,.12),rgba(200,255,61,.12)),var(--grad);transform:translateY(-2px)}
.btn-pill{border-radius:999px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--lime);font-weight:600;font-size:14px;
  transition:gap .22s var(--ease),color .22s var(--ease);
}
.link-arrow:hover{gap:11px}

/* ============ Tags / badges ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 11px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  border:1px solid var(--line);color:var(--sub);background:rgba(255,255,255,.03);
}
.tag-lime{color:var(--lime);border-color:rgba(200,255,61,.36);background:rgba(200,255,61,.08)}
.tag-purple{color:#B7A5FF;border-color:rgba(122,92,255,.42);background:rgba(122,92,255,.12)}
.tag-pink{color:#FF8FBC;border-color:rgba(255,61,139,.4);background:rgba(255,61,139,.1)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.08em;color:var(--dim);font-weight:600;
}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--grad)}
.stat-num{font-family:"SFMono-Regular",Menlo,Consolas,monospace;font-weight:800;line-height:1}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:96px 0 84px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(12,8,18,.94) 0%,rgba(12,8,18,.78) 45%,rgba(12,8,18,.62) 100%),
    linear-gradient(180deg,rgba(12,8,18,.6),rgba(12,8,18,.96));
}
.hero::after{
  content:"";position:absolute;left:-10%;top:-40%;width:60%;height:170%;
  background:radial-gradient(closest-side,rgba(122,92,255,.28),transparent 72%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:var(--sub);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--lime)}
.crumb span.sep{color:var(--dim)}
.crumb .now{color:var(--lime)}
.hero h1{
  font-size:clamp(30px,5vw,54px);line-height:1.15;letter-spacing:-.02em;
  max-width:820px;
}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin-top:20px;max-width:620px;color:var(--sub);font-size:17px;line-height:1.9}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{
  margin-top:52px;display:grid;gap:16px;
  grid-template-columns:repeat(2,minmax(0,1fr));
}
@media(min-width:768px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-card{
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(32,23,65,.9),rgba(21,16,32,.9));
  border:1px solid var(--line);
  padding:18px 20px;
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.stat-card:hover{border-color:var(--line-hot);transform:translateY(-4px)}
.stat-card .num{color:var(--lime);font-size:34px;display:inline-flex;align-items:baseline;gap:4px;animation:breathe 3s ease-in-out infinite}
.stat-card .num small{font-size:13px;color:var(--sub);font-family:var(--font);font-weight:600}
.stat-card .cap{margin-top:8px;font-size:13px;color:var(--dim)}
@keyframes breathe{0%,100%{opacity:.86}50%{opacity:1}}

/* ============ Sections ============ */
.section{padding:56px 0;position:relative}
@media(min-width:768px){.section{padding:80px 0}}
@media(min-width:1024px){.section{padding:112px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3.4vw,38px);line-height:1.25}
.section-head .sub{margin-top:12px;color:var(--sub);max-width:620px;font-size:15px}
.section-head .sub strong{color:var(--lime);font-weight:700}

/* filter pills */
.filter-bar{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:14px 16px;border-radius:999px;border:1px solid var(--line);
  background:rgba(21,16,32,.72);backdrop-filter:blur(8px);
}
.pill{
  height:34px;padding:0 16px;border-radius:999px;font-size:14px;font-weight:600;color:var(--sub);
  border:1px solid transparent;transition:.22s var(--ease);
}
.pill:hover{color:var(--text);background:rgba(255,255,255,.05)}
.pill.is-active{
  color:var(--lime);border-color:rgba(200,255,61,.4);background:rgba(200,255,61,.08);
  box-shadow:0 0 18px rgba(200,255,61,.18);
}
.filter-note{font-size:13px;color:var(--dim);margin-left:auto;display:none}
@media(min-width:920px){.filter-note{display:block}}

/* bento */
.bento{display:grid;gap:22px;grid-template-columns:1fr}
@media(min-width:768px){.bento{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.bento{grid-template-columns:repeat(3,minmax(0,1fr))}}
.bento .span-2{grid-column:span 1}
@media(min-width:768px){.bento .span-2{grid-column:span 2}}
.card{
  position:relative;
  background:linear-gradient(165deg,#1A1330 0%,#151020 100%);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-hot);box-shadow:var(--shadow-hover)}
.card-pad{padding:24px}
.card-title{font-size:20px;line-height:1.4}
.card-text{margin-top:12px;color:var(--sub);font-size:14.5px;line-height:1.85}
.num-block{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-size:13px;font-weight:800;color:var(--lime);
  border:1px solid rgba(200,255,61,.32);background:rgba(200,255,61,.07);
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;
}
.media{position:relative;overflow:hidden;border-radius:0}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .media img{transform:scale(1.04)}
.media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,8,18,0) 35%,rgba(12,8,18,.86) 100%);
}
.ratio-16x9{aspect-ratio:16/9}
.ratio-4x3{aspect-ratio:4/3}

/* feature row */
.split{display:grid;gap:28px;grid-template-columns:1fr}
@media(min-width:1024px){.split{grid-template-columns:1.05fr .95fr;align-items:center}}
.media-card{
  border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);position:relative;background:var(--card);
}
.media-card .badge-float{
  position:absolute;left:18px;top:18px;z-index:3;
  height:30px;padding:0 13px;border-radius:999px;display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:#0C0812;background:var(--lime);
}
.steps{margin-top:26px;display:grid;gap:14px}
.step{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;border-radius:var(--r-lg);
  background:rgba(26,19,48,.7);border:1px solid var(--line);
  transition:.24s var(--ease);
}
.step:hover{border-color:var(--line-hot);transform:translateX(4px)}
.step h3{font-size:17px}
.step p{margin-top:6px;color:var(--sub);font-size:14px}

/* scene list */
.scene-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.scene-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.scene{
  padding:24px;border-radius:var(--r-lg);
  background:linear-gradient(170deg,#201741 0%,#1A1330 100%);
  border:1px solid var(--line);
  transition:.24s var(--ease);
}
.scene:hover{border-color:var(--line-hot);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.scene h3{font-size:19px}
.scene p{margin-top:10px;color:var(--sub);font-size:14.5px}
.dot-list{margin-top:16px;display:grid;gap:8px}
.dot-list li{position:relative;padding-left:18px;font-size:14px;color:var(--sub)}
.dot-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:3px;
  background:var(--grad);
}

/* proof */
.proof{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:1024px){.proof{grid-template-columns:340px 1fr}}
.proof-stats{display:grid;gap:16px}
.big-stat{
  padding:22px;border-radius:var(--r-lg);
  background:var(--card);border:1px solid var(--line);
  transition:.24s var(--ease);
}
.big-stat:hover{border-color:var(--line-hot)}
.big-stat .n{font-size:40px;color:var(--lime);display:inline-flex;align-items:baseline;gap:4px}
.big-stat .n small{font-size:13px;color:var(--sub);font-weight:600}
.big-stat .d{margin-top:6px;font-size:13.5px;color:var(--dim)}
.quote-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.quote-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.quote{
  padding:24px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:
    radial-gradient(420px 200px at 90% 0%,rgba(122,92,255,.14),transparent 70%),
    linear-gradient(160deg,#1A1330,#151020);
  transition:.24s var(--ease);
}
.quote:hover{border-color:var(--line-hot);transform:translateY(-4px)}
.quote .who{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:42px;height:42px;border-radius:999px;display:grid;place-items:center;flex-shrink:0;
  font-weight:800;font-size:15px;color:var(--lime);
  background:linear-gradient(150deg,#201741,#151020);
  border:1px solid rgba(200,255,61,.3);
}
.quote .who .name{font-weight:700;font-size:15px}
.quote .who .role{font-size:12.5px;color:var(--dim)}
.quote p{color:var(--sub);font-size:14.5px}
.stars{margin-top:14px;display:flex;gap:4px;color:var(--lime);font-size:13px}

/* faq */
.faq-list{display:grid;gap:14px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--card);overflow:hidden;transition:.24s var(--ease);
}
.faq-item[open]{border-color:var(--line-hot);box-shadow:0 18px 44px rgba(0,0,0,.5)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:20px 22px;font-weight:700;font-size:16.5px;
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--lime)}
.faq-item summary .qmark{
  width:30px;height:30px;flex-shrink:0;border-radius:9px;display:grid;place-items:center;
  font-size:12px;font-weight:800;color:var(--lime);
  border:1px solid rgba(200,255,61,.3);background:rgba(200,255,61,.07);
}
.faq-item summary .arrow{margin-left:auto;color:var(--sub);transition:transform .26s var(--ease)}
.faq-item[open] summary .arrow{transform:rotate(180deg);color:var(--lime)}
.faq-body{
  padding:0 22px 22px 66px;color:var(--sub);font-size:14.5px;
  border-left:3px solid transparent;
}
.faq-item[open] .faq-body{border-image:var(--grad) 1;border-left-width:3px;border-left-style:solid}

/* subscribe */
.sub-band{
  border-radius:var(--r-xl);border:1px solid var(--line);
  background:var(--grad-soft),linear-gradient(160deg,#201741,#151020);
  padding:32px 26px;
  display:grid;gap:22px;grid-template-columns:1fr;
}
@media(min-width:1024px){.sub-band{grid-template-columns:1.1fr .9fr;align-items:center;padding:38px 40px}}
.sub-band h2{font-size:clamp(22px,2.6vw,30px)}
.sub-band p{margin-top:12px;color:var(--sub);font-size:14.5px}
.form-row{display:flex;gap:10px;flex-wrap:wrap}
.form-input{
  flex:1 1 220px;height:46px;padding:0 16px;border-radius:var(--r-sm);
  background:rgba(12,8,18,.72);border:1px solid var(--line);color:var(--text);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.form-input::placeholder{color:var(--dim)}
.form-input:focus{outline:none;border-color:rgba(200,255,61,.6);box-shadow:0 0 0 4px rgba(200,255,61,.16)}
.form-hint{margin-top:10px;font-size:12.5px;color:var(--dim)}

/* cta band */
.cta-band{
  border-radius:var(--r-xl);border:1px solid var(--line);
  background:var(--grad-soft),linear-gradient(120deg,#1A1330,#151020);
  padding:26px 26px;
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px)}
.cta-band p{margin-top:8px;color:var(--sub);font-size:14px}

/* related */
.related-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rel-card{
  display:block;padding:24px;border-radius:var(--r-lg);
  background:var(--card);border:1px solid var(--line);
  transition:.24s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-hot);box-shadow:var(--shadow-hover)}
.rel-card:hover h3{color:var(--lime)}
.rel-card h3{font-size:18px;transition:color .22s var(--ease)}
.rel-card p{margin-top:10px;color:var(--sub);font-size:14px}
.rel-card .go{margin-top:16px;display:inline-flex;align-items:center;gap:6px;color:var(--lime);font-size:13.5px;font-weight:600}
.rel-card.is-current{border-color:rgba(200,255,61,.4);background:linear-gradient(165deg,#201741,#151020)}

/* footer */
.site-footer{
  margin-top:20px;
  background:linear-gradient(180deg,rgba(21,16,32,.6),rgba(12,8,18,.98));
  border-top:1px solid var(--line);
  padding:64px 0 130px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:var(--grad);opacity:.45;
}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.3fr .8fr .8fr 1fr}}
.footer-col{position:relative}
@media(min-width:1024px){
  .footer-col+.footer-col{padding-left:28px}
  .footer-col+.footer-col::before{
    content:"";position:absolute;left:0;top:4px;bottom:4px;width:1px;
    background:linear-gradient(180deg,rgba(200,255,61,.4),rgba(122,92,255,.25),rgba(255,61,139,.25));
  }
}
.footer-title{font-size:13px;letter-spacing:.08em;color:var(--dim);font-weight:700;margin-bottom:14px}
.footer-link{display:block;color:var(--sub);font-size:14.5px;padding:5px 0;transition:color .22s var(--ease),transform .22s var(--ease)}
a.footer-link:hover{color:var(--lime);transform:translateX(3px)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--dim);
}

/* floating cta */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 24px;border-radius:999px;
  background:var(--lime);color:#0C0812;font-weight:800;font-size:15px;
  box-shadow:0 16px 38px rgba(200,255,61,.32);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease),box-shadow .22s var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{box-shadow:0 20px 48px rgba(200,255,61,.5)}
@media(max-width:919px){
  .float-cta{
    right:0;left:0;bottom:0;justify-content:center;
    height:auto;padding:15px 20px calc(15px + env(safe-area-inset-bottom,0px));
    border-radius:0;transform:translateY(100%);
    box-shadow:0 -10px 30px rgba(0,0,0,.5);
  }
  .float-cta.is-visible{transform:translateY(0)}
  .site-footer{padding-bottom:110px}
}

/* mobile drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:88;
  opacity:0;visibility:hidden;transition:.26s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:90;
  background:linear-gradient(200deg,#1A1330,#0C0812);
  border-left:1px solid transparent;
  border-image:var(--grad) 1;
  transform:translateX(100%);transition:transform .3s var(--ease);
  padding:24px 20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer .close-x{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;color:var(--sub)}
.drawer a.drawer-link{
  display:flex;align-items:center;height:52px;padding:0 14px;border-radius:12px;
  color:var(--sub);font-size:16px;font-weight:600;border-left:3px solid transparent;
  transition:.22s var(--ease);
}
.drawer a.drawer-link:hover{background:rgba(255,255,255,.05);color:var(--text)}
.drawer a.drawer-link.active{color:var(--lime);border-left-color:var(--lime);background:rgba(200,255,61,.08)}
.drawer .drawer-cta{margin-top:20px}

@media(max-width:919px){
  .nav-desktop{display:none}
  .burger{display:block}
  .nav-cta{display:none}
  .hero{padding:64px 0 56px}
  .section-head{margin-bottom:26px}
}

/* roulang page: category3 */
:root{
  --bg:#0C0812;
  --surface:#151020;
  --card:#1A1330;
  --card-2:#201741;
  --line:rgba(255,255,255,.08);
  --line-hi:rgba(200,255,61,.35);
  --text:#E8E4F2;
  --dim:#A79FBE;
  --mute:#6F6884;
  --lime:#C8FF3D;
  --purple:#7A5CFF;
  --magenta:#FF3D8B;
  --grad:linear-gradient(100deg,#C8FF3D 0%,#7A5CFF 50%,#FF3D8B 100%);
  --r-xl:28px; --r-lg:20px; --r-sm:14px;
  --shadow:0 20px 50px rgba(0,0,0,.5);
  --shadow-hi:0 28px 70px rgba(0,0,0,.65),0 0 0 1px rgba(200,255,61,.3),0 12px 44px rgba(122,92,255,.22);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;background-color:var(--card)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;box-shadow:0 0 0 4px rgba(200,255,61,.18)}
::selection{background:rgba(200,255,61,.3);color:#0C0812}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{font-size:13px;letter-spacing:.08em;color:var(--mute);display:inline-flex;align-items:center;gap:8px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--grad)}
.lead{color:var(--dim);font-size:15px;line-height:1.85}
.mono{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,8,18,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:background .24s var(--ease);
}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--grad);opacity:.5}
.site-header.is-scrolled{background:rgba(9,6,14,.95)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--grad);display:grid;place-items:center;padding:1px;flex:none}
.logo-mark span{width:100%;height:100%;border-radius:10px;background:#120D1F;display:grid;place-items:center;font-size:12px;font-weight:800;color:var(--lime);letter-spacing:.02em}
.logo-word{font-size:19px;font-weight:800;letter-spacing:.01em;line-height:1}
.logo-word b{color:var(--lime)}
.logo-word i{font-style:normal;color:var(--dim)}
.nav-desktop{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:9px 14px;font-size:15px;color:var(--dim);border-radius:10px;transition:color .22s var(--ease)}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:1px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--lime);text-shadow:0 0 12px rgba(200,255,61,.55)}
.nav-link.active::before{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:24px;height:8px;border-radius:999px;background:var(--grad);opacity:.9}
.nav-link.active::after{display:none}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-sm);font-weight:600;font-size:15px;padding:12px 22px;border:1px solid transparent;transition:all .24s var(--ease);white-space:nowrap}
.btn-primary{background:var(--lime);color:#0C0812;box-shadow:0 10px 30px rgba(200,255,61,.18)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(200,255,61,.5),0 14px 40px rgba(200,255,61,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:rgba(255,255,255,.16);color:var(--text)}
.btn-ghost:hover{border-color:var(--line-hi);background:rgba(200,255,61,.08);color:var(--lime)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:999px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--lime);font-size:14px;font-weight:600}
.text-link i{font-style:normal;transition:transform .22s var(--ease)}
.text-link:hover i{transform:translateX(4px)}

.burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--card);position:relative;flex:none}
.burger span{position:absolute;top:50%;left:50%;width:18px;height:2px;margin:-1px 0 0 -9px;border-radius:2px;background:var(--text);transition:.24s var(--ease)}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);transition:.24s var(--ease)}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger.open span{background:transparent}
.burger.open span::before{top:0;transform:rotate(45deg)}
.burger.open span::after{top:0;transform:rotate(-45deg)}

.drawer{position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:#100B1C;border-left:1px solid var(--line-hi);transform:translateX(102%);transition:transform .3s var(--ease);z-index:80;padding:88px 20px 40px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity .3s var(--ease);z-index:70}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer-title{font-size:13px;letter-spacing:.08em;color:var(--mute);margin:22px 0 8px}
.drawer-link{display:flex;align-items:center;height:52px;padding:0 14px;border-radius:12px;color:var(--dim);border-left:3px solid transparent;transition:.22s var(--ease)}
.drawer-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.drawer-link.active{color:var(--lime);border-left-color:var(--lime);background:rgba(200,255,61,.06)}
body.lock{overflow:hidden}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:44px 0 52px;background-image:url(/assets/images/backpic/back-2.png);background-size:cover;background-position:center}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,8,18,.95) 0%,rgba(12,8,18,.74) 52%,rgba(12,8,18,.9) 100%),linear-gradient(180deg,rgba(12,8,18,.4) 0%,rgba(12,8,18,.96) 100%)}
.page-hero .container-x{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--mute)}
.breadcrumb a{color:var(--dim);transition:color .22s var(--ease)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb em{font-style:normal;color:rgba(255,255,255,.2)}
.page-title{font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:800;margin-top:16px;letter-spacing:-.01em}
.page-desc{margin-top:16px;max-width:660px;color:var(--dim);font-size:16px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.stat-badge{display:inline-flex;align-items:baseline;gap:6px;padding:10px 18px;border-radius:999px;background:rgba(21,16,32,.7);border:1px solid var(--line);backdrop-filter:blur(6px);animation:breath 3s ease-in-out infinite}
.stat-badge:nth-child(2){animation-delay:.6s}
.stat-badge:nth-child(3){animation-delay:1.2s}
.stat-badge b{font-size:26px;line-height:1;font-weight:700;color:var(--lime);font-family:ui-monospace,Menlo,Consolas,monospace}
.stat-badge span{font-size:13px;color:var(--dim)}
@keyframes breath{0%,100%{opacity:1}50%{opacity:.85}}

.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.chip{padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.02);font-size:14px;color:var(--dim);transition:.22s var(--ease)}
.chip:hover{border-color:var(--line-hi);color:var(--text);transform:translateY(-1px)}
.chip.active{background:rgba(200,255,61,.12);border-color:var(--line-hi);color:var(--lime)}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:80px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:34px}
.section-title{font-size:clamp(24px,3.4vw,38px);line-height:1.25;font-weight:800;margin-top:10px}
.section-sub{margin-top:12px;max-width:620px;color:var(--dim);font-size:15px}

/* ---------- cascade grid ---------- */
.cascade{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:640px){.cascade{grid-template-columns:repeat(2,1fr)}}
.tile{position:relative;display:flex;flex-direction:column;border-radius:var(--r-xl);overflow:hidden;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease)}
.tile:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow-hi)}
.tile .thumb{position:relative;overflow:hidden;background:var(--card-2)}
.tile.ratio-43 .thumb{aspect-ratio:4/3}
.tile.ratio-11 .thumb{aspect-ratio:1/1}
.tile .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.tile:hover .thumb img{transform:scale(1.04)}
.tile .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,8,18,0) 40%,rgba(12,8,18,.88) 100%)}
.badge-stat{position:absolute;top:16px;left:16px;z-index:2;display:inline-flex;align-items:baseline;gap:5px;padding:7px 14px;border-radius:999px;background:rgba(12,8,18,.74);border:1px solid rgba(200,255,61,.45);backdrop-filter:blur(6px)}
.badge-stat b{font-size:20px;line-height:1;font-weight:700;color:var(--lime);font-family:ui-monospace,Menlo,Consolas,monospace}
.badge-stat span{font-size:12px;color:var(--dim)}
.tile-body{display:flex;flex-direction:column;gap:12px;padding:24px;flex:1}
.tile-body h3{font-size:20px;line-height:1.4;font-weight:700;transition:color .22s var(--ease)}
.tile:hover .tile-body h3{color:var(--lime)}
.tile-body p{color:var(--dim);font-size:14.5px;line-height:1.8}
.tile-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px;font-size:13px;color:var(--mute)}
.tag{padding:4px 12px;border-radius:999px;font-size:12.5px;border:1px solid var(--line);color:var(--dim);white-space:nowrap}
.tag.lime{color:var(--lime);border-color:rgba(200,255,61,.4);background:rgba(200,255,61,.08)}
.tag.purple{color:#B9A8FF;border-color:rgba(122,92,255,.45);background:rgba(122,92,255,.12)}
.tag.magenta{color:#FF8FBC;border-color:rgba(255,61,139,.42);background:rgba(255,61,139,.1)}

/* ---------- channel rows ---------- */
.channel-list{border-top:1px solid var(--line)}
.channel-row{display:flex;align-items:flex-start;gap:18px;padding:22px 8px;border-bottom:1px solid var(--line);transition:transform .22s var(--ease),background .22s var(--ease)}
.channel-row:hover{transform:translateX(4px);background:rgba(200,255,61,.03)}
.channel-idx{flex:none;width:38px;height:38px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;font-size:13px;color:var(--lime);font-family:ui-monospace,Menlo,Consolas,monospace}
.channel-row h3{font-size:18px;font-weight:700;margin-bottom:6px}
.channel-row p{color:var(--dim);font-size:14.5px}
.channel-row .meta{margin-left:auto;flex:none;font-size:13px;color:var(--mute);padding-top:4px}
@media(max-width:767px){
  .channel-row{flex-wrap:wrap}
  .channel-row .meta{margin-left:56px;padding-top:0;width:100%}
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:20px;counter-reset:step}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{position:relative;border-radius:var(--r-lg);background:var(--card-2);border:1px solid var(--line);padding:26px 22px;transition:.26s var(--ease)}
.step:hover{border-color:var(--line-hi);transform:translateY(-4px);box-shadow:var(--shadow)}
.step-num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:rgba(200,255,61,.12);border:1px solid rgba(200,255,61,.4);color:var(--lime);font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;margin-bottom:14px}
.step h3{font-size:19px;font-weight:700;margin-bottom:8px}
.step p{color:var(--dim);font-size:14.5px}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--card);transition:.24s var(--ease);overflow:hidden}
.faq-item[open]{border-color:var(--line-hi);background:var(--card-2);box-shadow:0 18px 44px rgba(0,0,0,.42)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;padding:20px 22px;font-size:17px;font-weight:600}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .q{flex:none;font-size:12.5px;color:var(--lime);font-family:ui-monospace,Menlo,Consolas,monospace;border:1px solid rgba(200,255,61,.4);border-radius:8px;padding:2px 8px}
.faq-item summary .arrow{margin-left:auto;flex:none;width:24px;height:24px;border-radius:50%;border:1px solid var(--line);position:relative;transition:transform .26s var(--ease),border-color .26s var(--ease)}
.faq-item summary .arrow::before{content:"";position:absolute;left:50%;top:50%;width:7px;height:7px;border-right:1.6px solid var(--dim);border-bottom:1.6px solid var(--dim);transform:translate(-50%,-70%) rotate(45deg)}
.faq-item[open] summary .arrow{transform:rotate(180deg);border-color:var(--line-hi)}
.faq-answer{padding:0 22px 22px 60px;border-left:3px solid transparent;color:var(--dim);font-size:15px}
.faq-item[open] .faq-answer{border-left:0;background:linear-gradient(90deg,rgba(200,255,61,.35),rgba(122,92,255,0) 60%) left top/3px 100% no-repeat}
@media(max-width:639px){
  .faq-item summary{font-size:15.5px;padding:18px 16px}
  .faq-answer{padding:0 16px 18px 16px}
}

/* ---------- pagination ---------- */
.pager{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:40px}
.pager a,.pager span{min-width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--line);font-size:14px;color:var(--dim);transition:.22s var(--ease);padding:0 14px}
.pager a:hover{border-color:var(--line-hi);color:var(--lime);transform:translateY(-2px)}
.pager .current{background:rgba(200,255,61,.14);border-color:var(--line-hi);color:var(--lime)}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.related-card{display:flex;flex-direction:column;gap:10px;padding:26px 24px;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);transition:.26s var(--ease)}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow-hi)}
.related-card .num{font-size:13px;color:var(--mute);font-family:ui-monospace,Menlo,Consolas,monospace}
.related-card h3{font-size:19px;font-weight:700}
.related-card:hover h3{color:var(--lime)}
.related-card p{color:var(--dim);font-size:14.5px}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-xl);border:1px solid var(--line);background:var(--card-2);padding:34px}
.cta-band::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:.1}
.cta-band::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad)}
.cta-band-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);font-weight:800;line-height:1.35}
.cta-band p{color:var(--dim);font-size:14.5px;margin-top:8px}

/* ---------- footer ---------- */
.site-footer{margin-top:24px;background:#100B1C;border-top:1px solid var(--line);padding:64px 0 40px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:0}
  .footer-col{padding:0 28px}
  .footer-col:first-child{padding-left:0}
  .footer-col:last-child{padding-right:0}
  .footer-col + .footer-col{border-left:1px solid transparent;background:linear-gradient(180deg,rgba(200,255,61,.32),rgba(122,92,255,.12)) left top/1px 100% no-repeat}
}
.footer-title{font-size:13px;letter-spacing:.08em;color:var(--mute);margin-bottom:14px}
.footer-link{display:block;color:var(--dim);font-size:14.5px;padding:5px 0;transition:color .22s var(--ease)}
a.footer-link:hover{color:var(--lime)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:44px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--mute)}
.form-input{width:100%;background:#0F0A1A;border:1px solid var(--line);border-radius:12px;padding:11px 14px;font-size:14px;color:var(--text);transition:.22s var(--ease)}
.form-input::placeholder{color:var(--mute)}
.form-input:focus{outline:none;border-color:var(--line-hi);box-shadow:0 0 0 3px rgba(200,255,61,.16)}

/* ---------- floating cta ---------- */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:65;opacity:0;transform:translateY(14px);pointer-events:none;transition:opacity .3s var(--ease),transform .3s var(--ease)}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta .btn{box-shadow:0 16px 40px rgba(200,255,61,.28)}

@media(max-width:919px){
  .nav-desktop{display:none}
  .nav-cta{display:none}
  .burger{display:block}
  .float-cta{right:0;left:0;bottom:0}
  .float-cta .btn{width:100%;border-radius:0;padding:16px 20px;padding-bottom:calc(16px + env(safe-area-inset-bottom));font-size:16px}
  .site-footer{padding-bottom:150px}
}
@media(max-width:639px){
  .page-hero{padding:32px 0 40px}
  .stat-badge b{font-size:22px}
  .stat-badge span{font-size:12.5px}
  .tile-body{padding:20px}
  .cta-band{padding:24px 20px}
}