/* roulang page: index */
:root{
  --ink-900:#08090C;--ink-800:#0E1016;--ink-700:#171A22;
  --neon:#C9FF3D;--neon-ink:#5E7B0A;--neon-soft:rgba(201,255,61,.16);
  --violet:#7C5CFF;--violet-ink:#4B34C9;--coral:#FF3B4E;
  --paper:#F3F4EF;--card:#FFFFFF;--line:#E3E5DF;--line-dark:rgba(255,255,255,.10);
  --text-1:#14161B;--text-2:#4A4F58;--text-3:#868C96;--text-inverse:#E8EAF0;
  --r-card:14px;--r-img:12px;--r-btn:10px;
  --sh-card:0 1px 2px rgba(16,18,24,.06),0 12px 28px -18px rgba(16,18,24,.22);
  --sh-dark:0 0 0 1px rgba(201,255,61,.18),0 0 28px -10px rgba(201,255,61,.32);
  --ease:150ms ease-out;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--text-1);
  font-family:var(--font-cn);font-size:17px;line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
h1,h2,h3{font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--text-1);}
h1{font-size:44px;}h2{font-size:32px;}h3{font-size:22px;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--neon-ink);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:var(--ink-900);
  border-bottom:1px solid transparent;transition:background var(--ease),box-shadow var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0) 0%,rgba(201,255,61,.6) 50%,rgba(201,255,61,0) 100%);
}
.site-header.is-scrolled{background:rgba(8,9,12,.92);backdrop-filter:blur(10px);box-shadow:0 8px 30px -18px rgba(0,0,0,.9);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:12px;height:12px;border-radius:3px;background:var(--neon);box-shadow:0 0 12px rgba(201,255,61,.7);}
.brand-text{color:var(--text-inverse);font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px;}
.nav-link{
  position:relative;display:block;padding:8px 12px;border-radius:999px;
  font-size:15px;color:rgba(232,234,240,.78);transition:color var(--ease),background var(--ease);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);width:0;height:2px;
  background:var(--neon);transition:width var(--ease);border-radius:2px;
}
.nav-link:hover{color:var(--neon);}
.nav-link:hover::after{width:18px;}
.nav-link.active{color:var(--neon);background:rgba(201,255,61,.12);box-shadow:0 0 14px rgba(201,255,61,.28);}
.nav-link.active::after{width:0;}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line-dark);border-radius:10px;color:var(--text-inverse);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.icon-btn:hover{border-color:var(--neon);color:var(--neon);background:rgba(201,255,61,.08);}
.tool-divider{width:1px;height:22px;background:var(--line-dark);}
.menu-btn{display:none;width:40px;height:40px;background:transparent;border:1px solid var(--line-dark);border-radius:10px;color:var(--text-inverse);align-items:center;justify-content:center;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.btn-neon{background:var(--neon);color:#0A0C05;box-shadow:0 0 22px -6px rgba(201,255,61,.6);}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-neon:active{transform:translateY(0);}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 22px -12px rgba(255,59,78,.8);}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-coral:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--neon-ink);background:rgba(94,123,10,.07);transform:translateY(-1px);}
.btn-ghost-dark{background:transparent;border-color:rgba(232,234,240,.35);color:var(--text-inverse);}
.btn-ghost-dark:hover{border-color:var(--neon);background:rgba(201,255,61,.08);color:var(--neon);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.btn .spinner{display:inline-flex;gap:4px;}
.btn .spinner i{width:5px;height:5px;border-radius:50%;background:currentColor;animation:pulse 1s infinite;}
.btn .spinner i:nth-child(2){animation-delay:.15s;}
.btn .spinner i:nth-child(3){animation-delay:.3s;}
@keyframes pulse{0%,100%{opacity:.3}50%{opacity:1}}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge-neon{background:rgba(94,123,10,.08);color:var(--neon-ink);}
.badge-violet{background:rgba(75,52,201,.09);color:var(--violet-ink);}
.badge-coral{background:rgba(255,59,78,.1);color:#C4172A;}
.badge-dark{background:rgba(201,255,61,.14);color:var(--neon);}
.badge-ghost{background:rgba(20,22,27,.05);color:var(--text-2);}

/* ---------- hero ---------- */
.hero{background:var(--ink-900);color:var(--text-inverse);position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(201,255,61,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(201,255,61,.05) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(circle at 72% 40%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:72px 0 80px;position:relative;}
.hero-copy{max-width:560px;}
.hero-copy .badge{margin-bottom:18px;}
.hero h1{color:var(--text-inverse);font-size:44px;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--neon);}
.hero-sub{font-size:17px;color:rgba(232,234,240,.72);max-width:520px;margin-bottom:32px;line-height:1.8;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-visual{position:relative;border-radius:16px;overflow:hidden;min-height:380px;
  background-image:linear-gradient(180deg,rgba(8,9,12,.35),rgba(8,9,12,.85)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  box-shadow:var(--sh-dark);
}
.hero-visual::after{content:"";position:absolute;inset:0;border-radius:16px;border:1px solid rgba(201,255,61,.35);pointer-events:none;}
.float-card{
  position:absolute;left:24px;right:24px;bottom:24px;background:rgba(14,16,22,.86);backdrop-filter:blur(8px);
  border:1px solid rgba(201,255,61,.22);border-radius:12px;padding:18px 20px;
}
.float-card .fc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.fc-row{display:flex;align-items:center;justify-content:space-between;padding:7px 0;border-bottom:1px dashed rgba(232,234,240,.14);font-size:14px;}
.fc-row:last-child{border-bottom:0;}
.fc-row span:first-child{color:rgba(232,234,240,.62);}
.fc-row span:last-child{color:var(--text-inverse);font-weight:600;}
.live-dot{width:8px;height:8px;border-radius:50%;background:var(--coral);display:inline-block;position:relative;}
.live-dot::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid var(--coral);animation:breathe 1.8s infinite;}
@keyframes breathe{0%{transform:scale(.7);opacity:.9}100%{transform:scale(1.5);opacity:0}}
.hero-edge{height:2px;background:linear-gradient(90deg,transparent,rgba(201,255,61,.85),transparent);}

/* ---------- quick entries ---------- */
.quick-bar{background:var(--card);border-bottom:1px solid var(--line);}
.quick-list{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.quick-item{display:flex;align-items:center;gap:14px;padding:22px 20px;border-right:1px solid var(--line);transition:background var(--ease);}
.quick-item:last-child{border-right:0;}
.quick-item:hover{background:rgba(201,255,61,.06);}
.quick-ico{width:42px;height:42px;flex-shrink:0;border-radius:12px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--neon-ink);background:rgba(94,123,10,.05);}
.quick-item b{display:block;font-size:15px;color:var(--text-1);}
.quick-item small{display:block;font-size:12px;color:var(--text-3);line-height:1.6;}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.sec-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:640px;}
.text-link{color:var(--neon-ink);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid rgba(94,123,10,.35);padding-bottom:2px;transition:border-color var(--ease);}
.text-link:hover{border-color:var(--neon-ink);}

/* ---------- feature grid ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.fcard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);transition:transform var(--ease),border-color var(--ease);display:flex;flex-direction:column;
}
.fcard:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.35);}
.fcard-lg{grid-column:span 2;}
.fcard-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--ink-800);}
.fcard-lg .fcard-media{aspect-ratio:16/8;}
.fcard-media img{width:100%;height:100%;object-fit:cover;transition:transform 220ms ease-out;}
.fcard:hover .fcard-media img{transform:scale(1.03);}
.fcard-media .badge{position:absolute;top:12px;left:12px;}
.fcard-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.fcard-body h3{font-size:20px;margin-bottom:10px;}
.fcard-lg .fcard-body h3{font-size:22px;}
.fcard-body p{color:var(--text-2);font-size:15px;line-height:1.75;}
.fcard-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);}
.fcard-foot .go{color:var(--neon-ink);font-weight:600;}

/* ---------- trust strip ---------- */
.trust{background:var(--ink-900);color:var(--text-inverse);padding:56px 0;border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.trust-item{padding-left:18px;border-left:2px solid rgba(201,255,61,.4);}
.trust-item b{display:block;font-size:34px;color:var(--neon);letter-spacing:-.02em;line-height:1.2;}
.trust-item span{font-size:14px;color:rgba(232,234,240,.7);}

/* ---------- reviews ---------- */
.review-wrap{position:relative;}
.review-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 2px 18px;scrollbar-width:none;}
.review-track::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 320px;scroll-snap-align:start;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-card);
}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{width:42px;height:42px;border-radius:50%;flex-shrink:0;background:linear-gradient(140deg,var(--violet),#3A2496);display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:700;}
.review-top b{display:block;font-size:15px;}
.review-top small{display:block;font-size:12px;color:var(--text-3);}
.stars{display:flex;gap:2px;color:#E2A400;}
.review-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.review-foot{margin-top:14px;font-size:12px;color:var(--text-3);}
.review-nav{display:flex;align-items:center;gap:10px;justify-content:flex-end;margin-top:8px;}
.rv-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--neon-ink);display:inline-flex;align-items:center;justify-content:center;transition:border-color var(--ease),background var(--ease);}
.rv-btn:hover{border-color:var(--neon-ink);background:rgba(94,123,10,.06);}
.dots{display:flex;gap:6px;margin-right:auto;}
.dots i{width:8px;height:8px;border-radius:50%;background:var(--line);transition:background var(--ease),width var(--ease);}
.dots i.on{background:var(--neon-ink);width:20px;border-radius:999px;}

/* ---------- guarantee ---------- */
.guard{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.guard-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;display:flex;gap:14px;align-items:flex-start;}
.guard-item .gi{width:34px;height:34px;flex-shrink:0;color:var(--neon-ink);}
.guard-item b{display:block;font-size:15px;margin-bottom:4px;}
.guard-item p{font-size:13.5px;color:var(--text-2);line-height:1.7;}

/* ---------- latest news ---------- */
.news-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:start;}
.news-lead{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform var(--ease),border-color var(--ease);display:block;}
.news-lead:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.35);}
.news-lead .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--ink-800);}
.news-lead .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 220ms ease-out;}
.news-lead:hover .thumb img{transform:scale(1.03);}
.news-lead .body{padding:24px;}
.news-lead h3{font-size:22px;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-lead p{color:var(--text-2);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-side{display:grid;gap:16px;}
.news-item{display:grid;grid-template-columns:112px 1fr;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:14px;box-shadow:var(--sh-card);transition:transform var(--ease),border-color var(--ease);}
.news-item:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.35);}
.news-item .thumb{aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:var(--ink-800);}
.news-item .thumb img{width:100%;height:100%;object-fit:cover;}
.news-item h3{font-size:16px;margin:6px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item p{font-size:13px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.7;}
.meta{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);}
.empty{
  background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:52px 24px;text-align:center;color:var(--text-2);
}
.empty svg{color:var(--text-3);margin-bottom:14px;}
.empty p{margin-bottom:18px;font-size:15px;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);}
.faq-item.open{border-left:3px solid var(--neon);box-shadow:var(--sh-card);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:transparent;border:0;padding:18px 20px;text-align:left;font-size:17px;font-weight:600;color:var(--text-1);}
.faq-q .ic{flex-shrink:0;color:var(--neon-ink);transition:transform var(--ease);}
.faq-item.open .faq-q .ic{transform:rotate(180deg);}
.faq-a{display:none;padding:0 20px 20px;border-top:1px solid var(--line);margin-top:0;}
.faq-item.open .faq-a{display:block;}
.faq-a p{font-size:15px;color:var(--text-2);padding-top:16px;}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink-900);color:var(--text-inverse);}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(8,9,12,.92),rgba(8,9,12,.6)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0;}
.cta-inner h2{color:var(--text-inverse);font-size:30px;margin-bottom:10px;}
.cta-inner p{color:rgba(232,234,240,.72);font-size:15px;max-width:560px;}
.cta-inner .btn-neon{height:52px;padding:0 32px;font-size:16px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(232,234,240,.65);position:relative;font-size:14px;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(201,255,61,.6),transparent);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px;}
.footer-brand .brand-text{color:var(--text-inverse);}
.footer-brand p{margin-top:16px;line-height:1.9;max-width:340px;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{width:36px;height:36px;border:1px solid var(--line-dark);border-radius:10px;display:inline-flex;align-items:center;justify-content:center;color:rgba(232,234,240,.7);transition:color var(--ease),border-color var(--ease);}
.socials a:hover{color:var(--neon);border-color:var(--neon);}
.footer-col h4{color:var(--text-inverse);font-size:15px;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{transition:color var(--ease);}
.footer-col a:hover{color:var(--neon);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;}

/* ---------- floating ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:var(--ink-800);border:1px solid var(--neon);color:var(--neon);
  display:inline-flex;align-items:center;justify-content:center;z-index:70;opacity:0;pointer-events:none;
  transition:opacity var(--ease),transform var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-2px);}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(4,5,8,.62);opacity:0;pointer-events:none;transition:opacity var(--ease);z-index:90;}
.drawer-mask.show{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88%;max-width:380px;background:var(--ink-800);z-index:95;
  transform:translateX(102%);transition:transform 220ms ease-out;display:flex;flex-direction:column;padding:22px;
  border-left:1px solid var(--line-dark);
}
.drawer.show{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line-dark);background:transparent;color:var(--text-inverse);display:inline-flex;align-items:center;justify-content:center;}
.drawer nav{display:flex;flex-direction:column;gap:4px;overflow-y:auto;}
.drawer nav a{
  min-height:56px;display:flex;align-items:center;padding:0 14px;border-radius:10px;
  color:rgba(232,234,240,.82);font-size:16px;border-left:3px solid transparent;transition:background var(--ease),color var(--ease);
}
.drawer nav a:hover{background:rgba(201,255,61,.06);color:var(--neon);}
.drawer nav a.active{color:var(--neon);border-left-color:var(--neon);background:rgba(201,255,61,.08);}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line-dark);}
.drawer-foot .btn{width:100%;}

/* ---------- mobile sticky bar ---------- */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:75;background:rgba(8,9,12,.94);
  backdrop-filter:blur(8px);border-top:1px solid rgba(201,255,61,.28);padding:10px 16px;
}
.sticky-cta .btn{width:100%;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  h1{font-size:40px;}.hero h1{font-size:40px;}
  h2{font-size:28px;}
  .container{padding:0 24px;}
  .main-nav{gap:2px;}
  .nav-link{padding:8px 9px;font-size:14px;}
}
@media (max-width:1023px){
  .main-nav,.tool-divider,.header-tools .btn{display:none;}
  .menu-btn{display:inline-flex;}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0 64px;}
  .hero-copy{max-width:none;}
  .hero-visual{min-height:300px;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .fcard-lg{grid-column:span 2;}
  .quick-list{grid-template-columns:repeat(2,1fr);}
  .quick-item:nth-child(2){border-right:0;}
  .quick-item:nth-child(1),.quick-item:nth-child(2){border-bottom:1px solid var(--line);}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .guard{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:56px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  h1{font-size:30px;}.hero h1{font-size:30px;}
  h2{font-size:24px;}h3{font-size:18px;}
  .container{padding:0 16px;}
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .quick-list{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:0;}
  .quick-item{flex:0 0 78%;scroll-snap-align:start;border-right:1px solid var(--line);border-bottom:0;}
  .feature-grid{grid-template-columns:1fr;}
  .fcard-lg{grid-column:span 1;}
  .fcard-lg .fcard-media{aspect-ratio:16/9;}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
  .trust-item b{font-size:26px;}
  .guard{grid-template-columns:1fr;}
  .review-card{flex:0 0 260px;}
  .news-side{grid-template-columns:1fr;}
  .news-item{grid-template-columns:96px 1fr;padding:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .sticky-cta{display:block;}
  .to-top{bottom:84px;}
  .cta-inner .btn-neon{width:100%;}
}
@media (max-width:480px){
  h1{font-size:26px;}.hero h1{font-size:26px;}
  h2{font-size:22px;}
  .fcard-body,.guard-item,.review-card{padding:16px;}
  .news-lead .body{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink-900:#08090C;
  --ink-800:#0E1016;
  --ink-700:#171A22;
  --neon:#C9FF3D;
  --neon-ink:#5E7B0A;
  --neon-soft:rgba(201,255,61,.16);
  --violet:#7C5CFF;
  --violet-ink:#4B34C9;
  --coral:#FF3B4E;
  --paper:#F3F4EF;
  --card:#FFFFFF;
  --line:#E3E5DF;
  --line-dark:rgba(255,255,255,.10);
  --text-1:#14161B;
  --text-2:#4A4F58;
  --text-3:#868C96;
  --text-inverse:#E8EAF0;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(16,18,24,.06), 0 12px 28px -18px rgba(16,18,24,.22);
  --shadow-dark:0 0 0 1px rgba(201,255,61,.18), 0 0 28px -10px rgba(201,255,61,.32);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--text-1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
input,textarea,select{font:inherit}
svg{display:block}
::selection{background:var(--neon-soft);color:var(--text-1)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 var(--s6)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--ink-900);
  transition:background .2s ease,box-shadow .2s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0),rgba(201,255,61,.75) 50%,rgba(201,255,61,0));
  opacity:.7;
}
.site-header.is-scrolled{
  background:rgba(8,9,12,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  box-shadow:0 1px 0 rgba(255,255,255,.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s5);height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text-inverse);white-space:nowrap}
.brand-mark{width:12px;height:12px;border-radius:3px;background:var(--neon);box-shadow:0 0 14px rgba(201,255,61,.65);flex:0 0 auto}
.brand-text{letter-spacing:-.01em}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;font-size:15px;padding:9px 2px;
  color:rgba(232,234,240,.78);
  transition:color .18s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;border-radius:2px;
  background:var(--neon);opacity:0;transform:scaleX(.35);
  transition:opacity .18s ease,transform .18s ease;
}
.nav-link:hover{color:var(--neon)}
.nav-link:hover::after{opacity:1;transform:scaleX(1)}
.nav-link.active{
  color:var(--neon);padding:9px 14px;border-radius:999px;
  background:rgba(201,255,61,.12);
  box-shadow:0 0 16px rgba(201,255,61,.25);
}
.nav-link.active::after{display:none}
.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;border-radius:10px;
  color:rgba(232,234,240,.8);transition:color .18s ease,background .18s ease;
}
.icon-btn:hover{color:var(--neon);background:rgba(255,255,255,.06)}
.tool-divider{width:1px;height:20px;background:rgba(255,255,255,.14)}
.menu-btn{display:none;width:38px;height:38px;place-items:center;border-radius:10px;color:var(--text-inverse)}
.menu-btn:hover{background:rgba(255,255,255,.06)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,filter .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-neon{background:var(--neon);color:#0B0D10}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-neon:active{transform:translateY(0)}
.btn-ghost{border-color:rgba(255,255,255,.24);color:var(--text-inverse)}
.btn-ghost:hover{border-color:var(--neon);background:rgba(201,255,61,.08);color:var(--neon)}
.btn-outline{border-color:var(--line);background:#fff;color:var(--text-1)}
.btn-outline:hover{border-color:var(--neon-ink);color:var(--neon-ink);transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn.is-loading{position:relative;color:transparent}
.btn.is-loading::after{
  content:"";position:absolute;inset:0;margin:auto;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(11,13,16,.25);border-top-color:#0B0D10;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- mobile drawer ---------- */
.drawer{position:fixed;inset:0;z-index:200;visibility:hidden;opacity:0;transition:opacity .2s ease,visibility .2s ease}
.drawer.is-open{visibility:visible;opacity:1}
.drawer-mask{position:absolute;inset:0;background:rgba(4,5,8,.62)}
.drawer-panel{
  position:absolute;top:0;right:0;width:88%;max-width:360px;height:100%;
  background:var(--ink-800);display:flex;flex-direction:column;
  padding:var(--s5) var(--s4) var(--s4);
  transform:translateX(100%);transition:transform .24s ease;
  box-shadow:-24px 0 48px -24px rgba(0,0,0,.8);
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--s5)}
.drawer-nav{display:flex;flex-direction:column;gap:2px;flex:1;overflow-y:auto}
.drawer-link{
  display:flex;align-items:center;height:56px;padding:0 14px;border-radius:10px;
  font-size:16px;color:rgba(232,234,240,.82);border-left:3px solid transparent;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.drawer-link:hover{color:var(--neon);background:rgba(255,255,255,.05)}
.drawer-link.active{color:var(--neon);border-left-color:var(--neon);background:rgba(201,255,61,.08)}
.drawer-foot{padding-top:var(--s4);border-top:1px solid var(--line-dark)}
.drawer-foot .btn{width:100%}

/* ---------- breadcrumbs ---------- */
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:var(--s5) 0 0;font-size:12px;color:var(--text-3)}
.crumbs a{color:var(--text-3);transition:color .18s ease}
.crumbs a:hover{color:var(--neon-ink)}
.crumbs .sep{opacity:.65}
.crumbs .current{color:var(--text-3);max-width:min(60vw,460px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-head{padding:var(--s5) 0 var(--s6);border-bottom:1px solid var(--line)}
.article-head-top{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--s5);flex-wrap:wrap}
.article-head-main{max-width:820px;min-width:0;flex:1 1 480px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-soft{background:rgba(94,123,10,.09);color:var(--neon-ink)}
.badge-live{background:rgba(255,59,78,.08);color:#C4212F}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--coral)}
.article-head h1{
  font-size:clamp(26px,3.2vw,38px);
  line-height:1.35;margin:14px 0 16px;color:var(--text-1);
}
.meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--text-3)}
.meta .dot{opacity:.55}
.meta-num{font-variant-numeric:tabular-nums}
.share{display:flex;gap:8px;flex:0 0 auto;padding-top:6px}
.share button{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--text-2);
  transition:transform .18s ease,border-color .18s ease,color .18s ease;
}
.share button:hover{transform:translateY(-2px);border-color:var(--neon-ink);color:var(--neon-ink)}
.share button:focus-visible{outline:2px solid var(--neon-ink);outline-offset:2px}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 328px;gap:var(--s6);
  align-items:start;padding:var(--s6) 0 0;
}
.article-main{min-width:0;display:flex;flex-direction:column;gap:var(--s5)}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:var(--s6);box-shadow:var(--shadow-card);
}

/* ---------- article body ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--text-2);overflow-wrap:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 22px}
.article-body h2{
  position:relative;font-size:24px;color:var(--text-1);
  margin:44px 0 16px;padding-left:16px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;
  background:var(--neon-ink);
}
.article-body h3{font-size:19px;color:var(--text-1);margin:30px 0 12px;scroll-margin-top:96px}
.article-body h4{font-size:17px;color:var(--text-1);margin:22px 0 10px}
.article-body ul{margin:0 0 22px}
.article-body ul>li{position:relative;padding-left:22px;margin-bottom:10px;line-height:1.8}
.article-body ul>li::before{
  content:"";position:absolute;left:5px;top:12px;width:6px;height:6px;border-radius:50%;
  background:var(--neon-ink);
}
.article-body ol{margin:0 0 22px;counter-reset:item}
.article-body ol>li{position:relative;padding-left:32px;margin-bottom:10px;line-height:1.8;counter-increment:item}
.article-body ol>li::before{
  content:counter(item);
  position:absolute;left:0;top:0;width:22px;
  color:var(--neon-ink);font-weight:700;font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--neon-ink);
  background:#F7F8F3;border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:26px auto;height:auto}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0 auto}
.article-body figcaption{font-size:12px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border-top:2px solid var(--neon-ink);border-radius:var(--radius-img);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.article-body thead th{background:#F3F4EF;color:var(--text-1);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFBF7}
.article-body strong{color:var(--text-1);font-weight:700}
.article-body a{color:var(--neon-ink);border-bottom:1px solid rgba(94,123,10,.35);transition:border-color .18s ease}
.article-body a:hover{border-bottom-color:var(--neon-ink)}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0}

.article-empty{
  display:flex;flex-direction:column;align-items:center;text-align:center;gap:var(--s4);
  padding:var(--s8) var(--s5);color:var(--text-2);
}
.article-empty svg{color:var(--neon-ink)}
.article-empty h3{font-size:20px;color:var(--text-1)}
.article-empty p{max-width:520px;font-size:15px;color:var(--text-2)}

/* ---------- sidebar ---------- */
.article-side{min-width:0}
.side-sticky{position:sticky;top:92px;display:flex;flex-direction:column;gap:var(--s5)}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.side-head h3{font-size:14px;font-weight:600;color:var(--text-3);letter-spacing:.04em}
.toc-toggle{
  display:none;align-items:center;gap:6px;font-size:13px;color:var(--neon-ink);
  font-weight:600;
}
.toc-list{display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:block;font-size:14px;line-height:1.55;color:var(--text-2);
  padding:7px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.toc-list a:hover{color:var(--neon-ink);background:#F7F8F3}
.toc-list a.is-active{color:var(--neon-ink);border-left-color:var(--neon-ink);background:#F7F8F3;font-weight:600}
.toc-empty{font-size:13px;color:var(--text-3);line-height:1.7}
.side-picks{display:flex;flex-direction:column;gap:14px}
.pick{display:flex;gap:12px;align-items:flex-start;transition:transform .18s ease}
.pick:hover{transform:translateX(3px)}
.pick-thumb{
  width:64px;height:44px;border-radius:8px;object-fit:cover;flex:0 0 auto;
  border:1px solid var(--line);background:var(--ink-700);
}
.pick-body{min-width:0}
.pick-title{
  font-size:14px;line-height:1.5;color:var(--text-1);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pick-time{font-size:12px;color:var(--text-3);margin-top:4px}

/* ---------- article foot ---------- */
.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.tag-label{font-size:13px;color:var(--text-3);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:rgba(94,123,10,.08);color:var(--neon-ink);font-size:13px;font-weight:600;
  transition:background .18s ease,transform .18s ease;
}
.tag:hover{background:rgba(94,123,10,.16);transform:translateY(-1px)}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:var(--s4)}
.pager-card{
  display:flex;flex-direction:column;gap:8px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-card);
  transition:transform .18s ease,border-color .18s ease;
}
.pager-card:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.4)}
.pager-card .dir{font-size:12px;color:var(--text-3);letter-spacing:.04em}
.pager-card .ttl{font-size:15px;font-weight:600;color:var(--text-1);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pager-card.next{text-align:right;align-items:flex-end}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s4)}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.4)}
.rel-thumb{aspect-ratio:16/9;width:100%;object-fit:cover;background:var(--ink-700)}
.rel-body{padding:16px 18px 18px}
.rel-body h3{
  font-size:15px;line-height:1.55;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-time{font-size:12px;color:var(--text-3);margin-top:8px}
.back-links{display:flex;flex-wrap:wrap;gap:20px;align-items:center;font-size:14px}
.back-links a{color:var(--neon-ink);font-weight:600;border-bottom:1px solid rgba(94,123,10,.35);transition:border-color .18s ease}
.back-links a:hover{border-bottom-color:var(--neon-ink)}
.section-title{font-size:19px;color:var(--text-1);margin-bottom:var(--s4)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;margin-top:var(--s9);padding:var(--s8) 0;
  background-image:linear-gradient(rgba(8,9,12,.82),rgba(8,9,12,.9)),url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  border-top:1px solid rgba(201,255,61,.35);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s6);flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);color:var(--text-inverse);max-width:640px}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(232,234,240,.7);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--ink-900);color:rgba(232,234,240,.65);
  font-size:14px;padding:var(--s8) 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0),rgba(201,255,61,.7) 50%,rgba(201,255,61,0));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:var(--s6)}
.footer-brand{max-width:380px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{line-height:1.8;color:rgba(232,234,240,.62)}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--line-dark);
  display:grid;place-items:center;color:rgba(232,234,240,.7);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.socials a:hover{color:var(--neon);border-color:rgba(201,255,61,.5);background:rgba(201,255,61,.08)}
.footer-col h4{font-size:14px;color:var(--text-inverse);font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col li{color:rgba(232,234,240,.65);line-height:1.6}
.footer-col a{transition:color .18s ease}
.footer-col a:hover{color:var(--neon)}
.footer-bottom{
  margin-top:var(--s7);padding:20px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(232,234,240,.5);
}

/* ---------- floating ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:90;
  width:44px;height:44px;border-radius:50%;
  background:var(--ink-800);border:1px solid rgba(201,255,61,.5);color:var(--neon);
  display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{box-shadow:0 0 18px -4px rgba(201,255,61,.6)}
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:95;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(8,9,12,.95);border-top:1px solid rgba(201,255,61,.3);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.sticky-cta .btn{width:100%}

/* ---------- skeleton ---------- */
.skeleton{position:relative;overflow:hidden;background:rgba(201,255,61,.08);border-radius:8px}
.skeleton::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(201,255,61,0) 0%,rgba(201,255,61,.18) 50%,rgba(201,255,61,0) 100%);
  animation:shimmer 1.2s infinite;
}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 var(--s5)}
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:var(--s5)}
}
@media (max-width:1023px){
  .container{padding:0 var(--s5)}
  .main-nav{display:none}
  .menu-btn{display:grid}
  .article-layout{grid-template-columns:1fr;gap:var(--s5)}
  .side-sticky{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--s6) var(--s5)}
  .footer-brand{max-width:none;grid-column:1/-1}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 var(--s4)}
  .article-head{padding:var(--s4) 0 var(--s5)}
  .article-card{padding:20px 18px}
  .article-body{font-size:16px}
  .article-body p{margin-bottom:18px}
  .article-body h2{font-size:21px;margin:34px 0 14px}
  .article-body h3{font-size:18px}
  .rel-grid{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .pager-card.next{text-align:left;align-items:flex-start}
  .toc-toggle{display:inline-flex}
  .toc-list{max-height:0;overflow:hidden;transition:max-height .25s ease}
  .side-card.is-open .toc-list{max-height:340px;overflow-y:auto}
  .cta-band{padding:var(--s7) 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .sticky-cta{display:block}
  .to-top{bottom:84px;right:16px}
  .footer-grid{grid-template-columns:1fr;gap:var(--s5)}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:480px){
  .article-head h1{font-size:24px}
  .article-card{padding:16px}
  .article-head-top{flex-direction:column;gap:var(--s4)}
  .share{order:2;padding-top:0}
  .btn{height:42px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --ink-900:#08090C;
  --ink-800:#0E1016;
  --ink-700:#171A22;
  --neon:#C9FF3D;
  --neon-ink:#5E7B0A;
  --neon-soft:rgba(201,255,61,.16);
  --violet:#7C5CFF;
  --violet-ink:#4B34C9;
  --coral:#FF3B4E;
  --paper:#F3F4EF;
  --card:#FFFFFF;
  --line:#E3E5DF;
  --line-dark:rgba(255,255,255,.10);
  --text-1:#14161B;
  --text-2:#4A4F58;
  --text-3:#868C96;
  --text-inverse:#E8EAF0;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-card:0 1px 2px rgba(16,18,24,.06),0 12px 28px -18px rgba(16,18,24,.22);
  --shadow-neon:0 0 0 1px rgba(201,255,61,.18),0 0 28px -10px rgba(201,255,61,.32);
  --container:1240px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  color:var(--text-1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.container{max-width:var(--container);margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:0;
  transition:transform .18s ease-out,filter .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,box-shadow .18s ease-out;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-neon{background:var(--neon);color:#0A0B0F;box-shadow:0 6px 20px -10px rgba(201,255,61,.7)}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-neon:active{transform:translateY(0);filter:brightness(1)}
.btn-ghost{border:1px solid rgba(232,234,240,.34);color:var(--text-inverse)}
.btn-ghost:hover{background:rgba(201,255,61,.08);border-color:var(--neon);color:var(--neon);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-outline{border:1px solid var(--line);color:var(--text-1);background:var(--card)}
.btn-outline:hover{border-color:var(--neon-ink);color:var(--neon-ink);transform:translateY(-1px)}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;filter:none}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink-900);
  transition:background-color .2s ease-out,box-shadow .2s ease-out,backdrop-filter .2s ease-out;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent 0%,rgba(201,255,61,.75) 50%,transparent 100%);
}
.site-header.is-scrolled{background:rgba(8,9,12,.94);backdrop-filter:blur(10px);box-shadow:0 10px 30px -18px rgba(0,0,0,.9)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--text-inverse)}
.brand-mark{
  width:22px;height:22px;border-radius:6px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--neon) 0%,var(--violet) 100%);
  box-shadow:0 0 16px -4px rgba(201,255,61,.85);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:2px;background:var(--ink-900);
}
.brand-text{font-size:17px;letter-spacing:-.01em}
.main-nav{display:flex;align-items:center;gap:8px}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 14px;border-radius:var(--r-pill);
  font-size:15px;color:rgba(232,234,240,.78);
  transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;height:2px;width:0;
  background:var(--neon);border-radius:2px;transform:translateX(-50%);
  transition:width .18s ease-out;
}
.nav-link:hover{color:var(--neon)}
.nav-link:hover::after{width:16px}
.nav-link.active{
  color:var(--neon);background:rgba(201,255,61,.12);
  box-shadow:0 0 0 1px rgba(201,255,61,.22),0 0 20px -8px rgba(201,255,61,.65);
}
.nav-link.active::after{width:0}
.header-tools{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  color:rgba(232,234,240,.8);transition:color .18s ease-out,background-color .18s ease-out;
}
.icon-btn:hover{color:var(--neon);background:rgba(201,255,61,.10)}
.tool-divider{width:1px;height:20px;background:var(--line-dark)}
.menu-btn{display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;color:var(--text-inverse)}
.menu-btn:hover{background:rgba(255,255,255,.06)}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(4,5,8,.6);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
}
.drawer.open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:88%;max-width:380px;
  background:var(--ink-900);border-left:1px solid var(--line-dark);
  display:flex;flex-direction:column;padding:20px;
  transform:translateX(100%);transition:transform .22s ease-out;
}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line-dark)}
.drawer-close{width:40px;height:40px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;color:var(--text-inverse)}
.drawer-close:hover{background:rgba(255,255,255,.06);color:var(--neon)}
.drawer-nav{display:flex;flex-direction:column;padding:12px 0;flex:1}
.drawer-link{
  display:flex;align-items:center;height:56px;padding:0 12px;border-radius:10px;
  color:rgba(232,234,240,.82);font-size:16px;position:relative;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.drawer-link:hover{color:var(--neon);background:rgba(201,255,61,.08)}
.drawer-link.active{color:var(--neon);background:rgba(201,255,61,.10)}
.drawer-link.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;background:var(--neon);
}
.drawer-cta{width:100%;margin-top:12px}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;color:var(--text-inverse);
  padding:76px 0 64px;
  background-image:linear-gradient(rgba(8,9,12,.80),rgba(8,9,12,.93)),url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,transparent 0%,rgba(201,255,61,.85) 50%,transparent 100%);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:rgba(232,234,240,.62);margin-bottom:22px}
.breadcrumb a{color:rgba(232,234,240,.62);transition:color .18s ease-out}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .sep{color:rgba(232,234,240,.32)}
.breadcrumb .current{color:var(--text-3)}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(201,255,61,.14);color:var(--neon);
  border:1px solid rgba(201,255,61,.32);
}
.pill-dot{width:6px;height:6px;border-radius:50%;background:var(--coral);box-shadow:0 0 10px rgba(255,59,78,.9);animation:breathe 2.4s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}
.page-hero h1{
  font-size:44px;line-height:1.28;margin:18px 0 16px;max-width:820px;
  color:var(--text-inverse);
}
.page-hero h1 em{font-style:normal;color:var(--neon)}
.hero-sub{max-width:680px;font-size:17px;color:rgba(232,234,240,.76);line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:40px;margin-top:44px;padding-top:26px;
  border-top:1px solid var(--line-dark);
}
.hero-facts li{display:flex;flex-direction:column;gap:4px}
.hero-facts .fig{font-size:24px;font-weight:700;color:var(--neon);font-variant-numeric:tabular-nums}
.hero-facts .lbl{font-size:13px;color:rgba(232,234,240,.6)}

/* ---------- 通用 section ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--neon-ink);letter-spacing:.04em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--neon-ink)}
h2{font-size:32px}
.section-head p{color:var(--text-2);font-size:16px;max-width:640px}
.section-dark{background:var(--ink-900);color:var(--text-inverse)}
.section-dark .eyebrow{color:var(--neon)}
.section-dark .eyebrow::before{background:var(--neon)}
.section-dark h2{color:var(--text-inverse)}
.section-dark .section-head p{color:rgba(232,234,240,.72)}

/* ---------- 简介区 ---------- */
.intro-grid{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:56px;align-items:start}
.intro-lead{font-size:19px;line-height:1.85;color:var(--text-1);font-weight:600}
.intro-body p+p{margin-top:22px}
.intro-body p{color:var(--text-2)}
.intro-note{
  margin-top:32px;padding:20px 22px;border-radius:var(--r-card);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-card);
  display:flex;gap:14px;align-items:flex-start;
}
.intro-note svg{flex:0 0 auto;color:var(--neon-ink);margin-top:4px}
.intro-note span{font-size:15px;color:var(--text-2)}

/* ---------- 步骤区（深色） ---------- */
.steps-layout{display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:56px;align-items:start}
.steps-media{position:sticky;top:100px}
.steps-media img{
  width:100%;border-radius:var(--r-img);
  border:1px solid rgba(201,255,61,.22);
  box-shadow:var(--shadow-neon);
}
.steps-media .media-cap{margin-top:14px;font-size:13px;color:rgba(232,234,240,.6)}
.step-list{display:flex;flex-direction:column;gap:16px}
.step-item{
  display:flex;gap:20px;padding:24px;border-radius:var(--r-card);
  background:var(--ink-800);border:1px solid var(--line-dark);
  transition:border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.step-item:hover{border-color:rgba(201,255,61,.34);box-shadow:var(--shadow-neon);transform:translateY(-2px)}
.step-num{
  flex:0 0 auto;width:46px;height:46px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--neon);color:var(--neon);
  font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 0 18px -6px rgba(201,255,61,.7) inset;
}
.step-body h3{font-size:19px;color:var(--text-inverse);margin-bottom:8px}
.step-body p{font-size:15px;color:rgba(232,234,240,.72);line-height:1.85}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;color:var(--neon);background:rgba(201,255,61,.10);
  border:1px solid rgba(201,255,61,.22);
}
.tag-violet{color:#C9BEFF;background:rgba(124,92,255,.16);border-color:rgba(124,92,255,.34)}

/* ---------- 自排查提示 ---------- */
.tip-list{display:flex;flex-direction:column;gap:18px;max-width:900px}
.tip-row{
  display:flex;gap:18px;align-items:flex-start;padding:22px 24px;
  background:var(--card);border:1px solid var(--line);border-left:3px solid var(--neon-ink);
  border-radius:var(--r-card);box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.tip-row:hover{transform:translateY(-3px);box-shadow:0 1px 2px rgba(16,18,24,.06),0 18px 34px -20px rgba(16,18,24,.3)}
.tip-icon{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--neon-ink);background:rgba(94,123,10,.08);border:1px solid rgba(94,123,10,.16);
}
.tip-row h3{font-size:18px;margin-bottom:6px}
.tip-row p{font-size:15px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.faq-item:hover{border-color:rgba(94,123,10,.32)}
.faq-item.open{border-left:3px solid var(--neon-ink);box-shadow:var(--shadow-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--text-1);
}
.faq-q .chev{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--neon-ink);
  transition:transform .2s ease-out,background-color .2s ease-out;
}
.faq-item.open .faq-q .chev{transform:rotate(180deg);background:rgba(94,123,10,.08)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease-out}
.faq-a-inner{
  padding:0 22px 20px 42px;border-top:1px solid var(--line);
  font-size:15px;color:var(--text-2);
}
.faq-a-inner p{padding-top:16px}

/* ---------- 交叉链接 ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.link-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.link-card:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.34);box-shadow:0 1px 2px rgba(16,18,24,.06),0 20px 38px -22px rgba(16,18,24,.34)}
.link-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-700)}
.link-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out}
.link-card:hover .thumb img{transform:scale(1.03)}
.link-card .badge{
  position:absolute;left:12px;top:12px;
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;
  background:rgba(8,9,12,.78);color:var(--neon);border:1px solid rgba(201,255,61,.3);
}
.link-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.link-card h3{font-size:18px;line-height:1.45}
.link-card p{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.link-card .more{
  margin-top:auto;font-size:14px;font-weight:600;color:var(--neon-ink);
  display:inline-flex;align-items:center;gap:6px;
}
.link-card:hover .more{gap:10px}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;color:var(--text-inverse);
  background-image:linear-gradient(rgba(8,9,12,.82),rgba(8,9,12,.92)),url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
  padding:72px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:30px;max-width:640px;color:var(--text-inverse)}
.cta-inner p{margin-top:12px;color:rgba(232,234,240,.72);font-size:16px;max-width:620px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--ink-900);color:rgba(232,234,240,.65);
  padding:72px 0 0;font-size:14px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent 0%,rgba(201,255,61,.7) 50%,transparent 100%);
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.55fr) repeat(3,minmax(0,1fr));gap:40px}
.footer-brand .brand{color:var(--text-inverse);margin-bottom:16px}
.footer-brand p{max-width:420px;line-height:1.85;color:rgba(232,234,240,.62)}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-dark);color:rgba(232,234,240,.7);
  transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
}
.socials a:hover{color:var(--neon);border-color:rgba(201,255,61,.4);background:rgba(201,255,61,.08)}
.footer-col h4{font-size:15px;color:var(--text-inverse);margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li{color:rgba(232,234,240,.6)}
.footer-col a{color:rgba(232,234,240,.66);transition:color .18s ease-out}
.footer-col a:hover{color:var(--neon)}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(232,234,240,.5);
}

/* ---------- 悬浮件 ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink-800);color:var(--neon);border:1px solid rgba(201,255,61,.45);
  box-shadow:0 12px 28px -16px rgba(0,0,0,.9);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s ease-out;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--ink-700)}
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  align-items:center;justify-content:space-between;gap:14px;
  padding:12px 16px;background:rgba(8,9,12,.96);border-top:1px solid rgba(201,255,61,.28);
  backdrop-filter:blur(10px);
}
.mobile-cta span{font-size:14px;color:rgba(232,234,240,.78)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .page-hero h1{font-size:40px}
  h2{font-size:28px}
  .cross-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .menu-btn{display:inline-flex}
  .section{padding:72px 0}
  .page-hero{padding:56px 0 52px}
  .page-hero h1{font-size:34px}
  .intro-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .steps-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .steps-media{position:static}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:64px 0}
  .page-hero{padding:44px 0 44px}
  .page-hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:24px}
  .section-head{margin-bottom:32px}
  h2{font-size:24px}
  .cross-grid{grid-template-columns:minmax(0,1fr)}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .mobile-cta{display:flex}
  .back-top{bottom:84px;right:16px}
  .step-item{padding:20px}
  .step-num{width:40px;height:40px;font-size:15px}
}
@media (max-width:480px){
  .page-hero h1{font-size:27px}
  .link-card .body{padding:16px}
  .tip-row{padding:18px}
  .faq-q{font-size:16px;padding:16px}
  .faq-a-inner{padding:0 16px 18px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --ink-900:#08090C;--ink-800:#0E1016;--ink-700:#171A22;
  --neon:#C9FF3D;--neon-ink:#5E7B0A;--neon-soft:rgba(201,255,61,.16);
  --violet:#7C5CFF;--violet-ink:#4B34C9;--coral:#FF3B4E;
  --paper:#F3F4EF;--card:#FFFFFF;--line:#E3E5DF;--line-dark:rgba(255,255,255,.10);
  --text-1:#14161B;--text-2:#4A4F58;--text-3:#868C96;--text-inverse:#E8EAF0;
  --r-card:14px;--r-img:12px;--r-btn:10px;--r-pill:999px;
  --sh-card:0 1px 2px rgba(16,18,24,.06),0 12px 28px -18px rgba(16,18,24,.22);
  --sh-dark:0 0 0 1px rgba(201,255,61,.18),0 0 28px -10px rgba(201,255,61,.32);
  --ease:150ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--text-1)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
input,select{font-family:inherit;font-size:15px;color:var(--text-1)}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.num{font-family:system-ui,Inter,sans-serif;font-variant-numeric:tabular-nums}
.container{max-width:1240px;margin:0 auto;padding:0 32px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--neon);color:var(--ink-900);padding:10px 16px;border-radius:0 0 var(--r-btn) 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:var(--ink-900);
  border-bottom:1px solid var(--line-dark);transition:box-shadow var(--ease),background var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0) 0%,rgba(201,255,61,.6) 50%,rgba(201,255,61,0) 100%);
}
.site-header.is-scrolled{background:rgba(8,9,12,.94);backdrop-filter:blur(12px);box-shadow:0 12px 32px -20px rgba(0,0,0,.9)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:14px;height:14px;border-radius:4px;background:linear-gradient(135deg,var(--neon),var(--violet));
  box-shadow:0 0 12px rgba(201,255,61,.6);
}
.brand-text{font-size:17px;font-weight:700;color:var(--text-inverse);letter-spacing:.01em}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;color:rgba(232,234,240,.78);padding:8px 12px;border-radius:var(--r-pill);
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--neon);opacity:0;transform:scaleX(.4);transition:opacity var(--ease),transform var(--ease);
}
.nav-link:hover{color:var(--neon)}
.nav-link:hover::after{opacity:1;transform:scaleX(1)}
.nav-link.active{color:var(--neon);background:rgba(201,255,61,.12);box-shadow:0 0 14px rgba(201,255,61,.25)}
.nav-link.active::after{opacity:0}
.header-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;border-radius:var(--r-btn);
  color:rgba(232,234,240,.8);transition:color var(--ease),background var(--ease);
}
.icon-btn:hover{color:var(--neon);background:rgba(255,255,255,.06)}
.tool-divider{width:1px;height:22px;background:var(--line-dark)}
.menu-btn{display:none;width:40px;height:40px;place-items:center;border-radius:var(--r-btn);color:var(--text-inverse);border:1px solid var(--line-dark)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;padding:0 22px;height:46px;
  transition:transform var(--ease),filter var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-neon{background:var(--neon);color:var(--ink-900);box-shadow:0 8px 24px -12px rgba(201,255,61,.8)}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-neon:active{transform:translateY(0)}
.btn-neon:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 24px -14px rgba(255,59,78,.9)}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-ghost{
  border:1px solid rgba(201,255,61,.45);color:var(--neon);
  background:rgba(201,255,61,.04);
}
.btn-ghost:hover{background:rgba(201,255,61,.12);border-color:var(--neon);transform:translateY(-1px)}
.btn-outline-light{border:1px solid rgba(255,255,255,.24);color:var(--text-inverse)}
.btn-outline-light:hover{background:rgba(201,255,61,.1);border-color:var(--neon);color:var(--neon)}
.btn-block{width:100%}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88%;max-width:380px;background:var(--ink-800);
  transform:translateX(102%);transition:transform 220ms ease-out;z-index:130;
  display:flex;flex-direction:column;padding:24px 20px;border-left:1px solid var(--line-dark);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line-dark)}
.drawer-close{width:38px;height:38px;display:grid;place-items:center;color:var(--text-inverse);border-radius:var(--r-btn);border:1px solid var(--line-dark)}
.drawer-nav{margin-top:12px;display:flex;flex-direction:column}
.drawer-nav a{
  position:relative;display:flex;align-items:center;height:56px;padding-left:14px;font-size:16px;
  color:rgba(232,234,240,.8);border-bottom:1px solid rgba(255,255,255,.05);
}
.drawer-nav a.active{color:var(--neon)}
.drawer-nav a.active::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--neon);box-shadow:0 0 12px rgba(201,255,61,.8)}
.drawer-foot{margin-top:auto;padding-top:20px}
.drawer-mask{position:fixed;inset:0;background:rgba(4,5,8,.62);opacity:0;visibility:hidden;transition:opacity 200ms ease-out;z-index:120}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- breadcrumb ---------- */
.breadcrumb-bar{background:var(--ink-900);border-bottom:1px solid var(--line-dark)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:rgba(232,234,240,.55);padding:12px 0}
.breadcrumb a{color:rgba(232,234,240,.75)}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .sep{color:rgba(232,234,240,.3)}
.breadcrumb .current{color:var(--text-3)}

/* ---------- hero ---------- */
.page-hero{position:relative;background:var(--ink-900);overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.5;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,9,12,.96) 0%,rgba(8,9,12,.82) 46%,rgba(8,9,12,.6) 100%);
}
.hero-inner{position:relative;z-index:2;padding:72px 0 76px;max-width:760px}
.pill{
  display:inline-flex;align-items:center;gap:8px;border-radius:var(--r-pill);
  padding:6px 14px;font-size:13px;font-weight:600;letter-spacing:.02em;
  background:rgba(201,255,61,.14);color:var(--neon);border:1px solid rgba(201,255,61,.34);
}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--coral);animation:breathe 1.8s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.8)}}
.page-hero h1{color:var(--text-inverse);font-size:44px;margin:20px 0 0}
.hero-sub{color:rgba(232,234,240,.78);font-size:17px;margin-top:16px;max-width:620px}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line-dark)}
.hero-meta div{min-width:120px}
.hero-meta b{display:block;font-family:system-ui,Inter,sans-serif;font-variant-numeric:tabular-nums;font-size:24px;color:var(--neon)}
.hero-meta span{font-size:13px;color:rgba(232,234,240,.6)}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-tight{padding-top:0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:32px}
.section-head p{color:var(--text-2);margin-top:12px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--neon-ink);letter-spacing:.08em;margin-bottom:12px;text-transform:uppercase}
.divider{height:1px;background:var(--line)}

/* intro */
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.intro-copy p{color:var(--text-2);margin-bottom:18px}
.intro-copy p:last-child{margin-bottom:0}
.intro-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-card);
}
.intro-card h3{font-size:20px;margin-bottom:16px}
.check-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--text-2)}
.check-list li:last-child{border-bottom:0}
.check-list svg{flex-shrink:0;margin-top:5px;color:var(--neon-ink)}

/* flow */
.flow-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow-track{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;margin-top:8px}
.flow-node{position:relative;padding-top:64px}
.flow-node .flow-dot{
  position:absolute;top:0;left:0;width:44px;height:44px;border-radius:50%;
  border:2px solid var(--neon-ink);background:#fff;display:grid;place-items:center;
  font-family:system-ui,Inter,sans-serif;font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;color:var(--neon-ink);
}
.flow-node::after{
  content:"";position:absolute;top:21px;left:56px;width:calc(100% - 32px);height:2px;
  background:repeating-linear-gradient(90deg,var(--line) 0 8px,transparent 8px 16px);
}
.flow-node:last-child::after{display:none}
.flow-node h3{font-size:19px;margin-bottom:10px}
.flow-node p{font-size:15px;color:var(--text-2)}
.flow-node .tagline{display:inline-block;margin-top:12px;font-size:12px;color:var(--violet-ink);background:rgba(124,92,255,.1);border-radius:var(--r-pill);padding:3px 10px}

/* device */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.device-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);transition:transform var(--ease),border-color var(--ease);
}
.device-card:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.3)}
.device-thumb{overflow:hidden;aspect-ratio:16/9;background:var(--ink-800)}
.device-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 220ms ease-out}
.device-card:hover .device-thumb img{transform:scale(1.03)}
.device-body{padding:22px}
.device-body h3{font-size:19px;margin-bottom:10px}
.device-body p{font-size:15px;color:var(--text-2)}
.device-spec{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--text-3);display:flex;justify-content:space-between;gap:12px}

/* form block */
.form-panel{
  margin-top:56px;background:var(--ink-800);border-radius:var(--r-card);padding:36px;
  display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;
  box-shadow:var(--sh-dark);
}
.form-panel h3{color:var(--text-inverse);font-size:24px}
.form-panel p{color:rgba(232,234,240,.7);font-size:15px;margin-top:12px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:rgba(232,234,240,.72);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;border-radius:var(--r-btn);border:1px solid var(--line-dark);
  background:rgba(255,255,255,.96);padding:0 14px;transition:border-color var(--ease),box-shadow var(--ease);
}
.field input:focus,.field select:focus{outline:none;border-color:var(--neon-ink);box-shadow:0 0 0 3px rgba(201,255,61,.22)}
.field.has-error input,.field.has-error select{border-color:var(--coral)}
.field .error-text{display:none;font-size:13px;color:#FF8A94;margin-top:6px}
.field.has-error .error-text{display:block}
.form-note{font-size:13px;color:rgba(232,234,240,.55);margin-top:12px}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease)}
.faq-item.is-open{border-left:3px solid var(--neon-ink);box-shadow:var(--sh-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--text-1);
}
.faq-icon{flex-shrink:0;color:var(--neon-ink);transition:transform 200ms ease-out}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms ease-out}
.faq-a-inner{padding:0 22px 20px 42px;border-top:1px solid var(--line);color:var(--text-2);font-size:15px}
.faq-a-inner p{padding-top:16px}

/* cross links */
.cross{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cross-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cross-card{
  display:flex;flex-direction:column;gap:10px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-card);
  transition:transform var(--ease),border-color var(--ease);
}
.cross-card:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.35)}
.cross-card .idx{font-family:system-ui,Inter,sans-serif;font-variant-numeric:tabular-nums;font-size:13px;color:var(--text-3)}
.cross-card h3{font-size:18px}
.cross-card p{font-size:14px;color:var(--text-2)}
.cross-card .go{margin-top:auto;font-size:14px;font-weight:600;color:var(--neon-ink);display:inline-flex;align-items:center;gap:6px}
.cross-card:hover .go{gap:10px}

/* cta band */
.cta-band{position:relative;background:var(--ink-900);overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.42;
}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,9,12,.95),rgba(8,9,12,.72))}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;padding:64px 0}
.cta-inner h2{color:var(--text-inverse);font-size:30px;max-width:640px}
.cta-inner p{color:rgba(232,234,240,.7);font-size:15px;margin-top:12px}
.cta-actions{display:flex;gap:14px;flex-shrink:0;flex-wrap:wrap}

/* footer */
.site-footer{position:relative;background:var(--ink-900);color:rgba(232,234,240,.65);font-size:14px}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0),rgba(201,255,61,.6),rgba(201,255,61,0));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px}
.footer-brand .brand-text{font-size:16px}
.footer-brand p{margin-top:16px;max-width:380px;line-height:1.8}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{
  width:36px;height:36px;display:grid;place-items:center;border-radius:var(--r-btn);
  border:1px solid var(--line-dark);color:rgba(232,234,240,.7);transition:color var(--ease),border-color var(--ease);
}
.socials a:hover{color:var(--neon);border-color:rgba(201,255,61,.5)}
.footer-col h4{color:var(--text-inverse);font-size:15px;margin-bottom:16px}
.footer-col ul li{margin-bottom:11px;line-height:1.7}
.footer-col a{transition:color var(--ease)}
.footer-col a:hover{color:var(--neon)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:22px 0 30px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:rgba(232,234,240,.5);
}

/* to top + mobile cta */
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  background:var(--ink-800);color:var(--neon);border:1px solid rgba(201,255,61,.5);
  display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);z-index:90;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:95;
  background:rgba(8,9,12,.96);border-top:1px solid var(--line-dark);
  padding:12px 16px;gap:12px;backdrop-filter:blur(10px);
}
.mobile-cta .btn{flex:1;height:48px}

/* responsive */
@media (max-width:1279px){
  .container{padding:0 24px}
  .page-hero h1{font-size:40px}
  .section{padding:80px 0}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .menu-btn{display:grid}
  .intro-grid{grid-template-columns:1fr;gap:32px}
  .device-grid{grid-template-columns:repeat(2,1fr)}
  .cross-grid{grid-template-columns:repeat(2,1fr)}
  .form-panel{grid-template-columns:1fr;padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px}
  .hero-inner{padding:60px 0 64px}
}
@media (max-width:820px){
  .flow-track{grid-template-columns:1fr;gap:0}
  .flow-node{padding:0 0 34px 64px}
  .flow-node:last-child{padding-bottom:0}
  .flow-node .flow-dot{left:0;top:0}
  .flow-node::after{
    top:50px;left:21px;width:2px;height:calc(100% - 46px);
    background:repeating-linear-gradient(180deg,var(--line) 0 8px,transparent 8px 16px);
  }
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;padding:52px 0}
  .cta-actions{width:100%}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .page-hero h1{font-size:30px}
  .section-head h2{font-size:24px}
  .section{padding:64px 0}
  .device-grid,.cross-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .hero-meta{gap:20px}
  .mobile-cta{display:flex}
  .to-top{bottom:88px;right:16px}
  .site-footer{padding-bottom:70px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .faq-a-inner{padding-left:22px}
}
@media (max-width:480px){
  .page-hero h1{font-size:26px}
  .section-head h2{font-size:22px}
  .device-body,.intro-card,.cross-card{padding:16px}
  .brand-text{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* roulang page: category3 */
:root{
  --ink-900:#08090C;
  --ink-800:#0E1016;
  --ink-700:#171A22;
  --neon:#C9FF3D;
  --neon-ink:#5E7B0A;
  --neon-soft:rgba(201,255,61,.16);
  --violet:#7C5CFF;
  --violet-ink:#4B34C9;
  --coral:#FF3B4E;
  --paper:#F3F4EF;
  --card:#FFFFFF;
  --line:#E3E5DF;
  --line-dark:rgba(255,255,255,.10);
  --text-1:#14161B;
  --text-2:#4A4F58;
  --text-3:#868C96;
  --text-inverse:#E8EAF0;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-card:0 1px 2px rgba(16,18,24,.06),0 12px 28px -18px rgba(16,18,24,.22);
  --shadow-dark:0 0 0 1px rgba(201,255,61,.18),0 0 28px -10px rgba(201,255,61,.32);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --ease:150ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color var(--ease),opacity var(--ease);}
button,input,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
svg{display:block;}
:focus-visible{outline:2px solid var(--neon-ink);outline-offset:2px;border-radius:4px;}
.container{max-width:1240px;margin:0 auto;padding:0 32px;}
.tnum{font-variant-numeric:tabular-nums;font-family:system-ui,-apple-system,"Inter",sans-serif;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--ink-900);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0) 0%,rgba(201,255,61,.85) 50%,rgba(201,255,61,0) 100%);
}
.site-header.is-scrolled{
  background:rgba(8,9,12,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-dark);
}
.header-inner{display:flex;align-items:center;gap:var(--sp-5);height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:14px;height:14px;border-radius:4px;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  box-shadow:0 0 12px rgba(201,255,61,.55);
}
.brand-text{color:var(--text-inverse);font-weight:700;font-size:17px;letter-spacing:.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:var(--sp-5);}
.nav-link{
  position:relative;color:rgba(232,234,240,.78);font-size:15px;padding:6px 10px;border-radius:var(--r-pill);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:0;height:2px;border-radius:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:center;transition:transform var(--ease);
}
.nav-link:hover{color:var(--neon);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{
  color:var(--neon);
  background:rgba(201,255,61,.12);
  box-shadow:0 0 4px rgba(201,255,61,.5);
}
.nav-link.active::after{transform:scaleX(0);}
.header-tools{display:flex;align-items:center;gap:var(--sp-3);margin-left:auto;}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line-dark);color:rgba(232,234,240,.8);
  cursor:pointer;transition:all var(--ease);
}
.icon-btn:hover{color:var(--neon);border-color:rgba(201,255,61,.55);background:rgba(201,255,61,.08);}
.tool-divider{width:1px;height:22px;background:var(--line-dark);}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line-dark);color:var(--text-inverse);cursor:pointer;
  align-items:center;justify-content:center;
}
.menu-btn:hover{border-color:rgba(201,255,61,.55);color:var(--neon);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease),filter var(--ease);
  text-align:center;
}
.btn-neon{background:var(--neon);color:#0B0D04;box-shadow:0 0 20px -6px rgba(201,255,61,.7);}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-neon:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:rgba(201,255,61,.45);color:var(--neon);}
.btn-outline:hover{background:rgba(201,255,61,.08);border-color:var(--neon);transform:translateY(-1px);}
.btn-ink{background:var(--ink-900);color:var(--text-inverse);border-color:var(--ink-900);}
.btn-ink:hover{filter:brightness(1.12);transform:translateY(-1px);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;filter:none;}
.btn.is-loading{position:relative;color:transparent!important;}
.btn.is-loading::after{
  content:"";position:absolute;left:50%;top:50%;width:16px;height:16px;margin:-8px 0 0 -8px;
  border:2px solid rgba(11,13,4,.35);border-top-color:#0B0D04;border-radius:50%;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- 迷你 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,rgba(8,9,12,.92),rgba(8,9,12,.86)),
             url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  border-bottom:2px solid transparent;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,rgba(201,255,61,0),rgba(201,255,61,.8),rgba(124,92,255,0));
}
.page-hero .hero-inner{padding:72px 0 64px;max-width:820px;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:12px;color:rgba(232,234,240,.6);margin-bottom:var(--sp-5);
}
.breadcrumb a{color:rgba(232,234,240,.72);}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--text-3);}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.4px;font-weight:600;
}
.pill-neon{background:rgba(201,255,61,.14);color:var(--neon);border:1px solid rgba(201,255,61,.35);}
.page-hero h1{
  color:var(--text-inverse);font-size:44px;margin:var(--sp-4) 0 var(--sp-4);
}
.page-hero .hero-sub{
  color:rgba(232,234,240,.76);font-size:17px;line-height:1.85;max-width:660px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:var(--sp-5);margin-top:var(--sp-6);}
.hero-meta div{display:flex;flex-direction:column;gap:2px;}
.hero-meta .num{font-size:24px;font-weight:700;color:var(--neon);}
.hero-meta .lbl{font-size:13px;color:rgba(232,234,240,.6);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sp-9) 0;}
.section.tight{padding:var(--sp-8) 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-dark{background:var(--ink-900);color:var(--text-inverse);}
.section-head{max-width:760px;margin-bottom:var(--sp-7);}
.section-head .kicker{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--neon-ink);text-transform:uppercase;margin-bottom:var(--sp-3);
}
.section-head h2{font-size:32px;margin-bottom:var(--sp-3);}
.section-head p{color:var(--text-2);font-size:16px;}
.section-dark .section-head .kicker{color:var(--neon);}
.section-dark .section-head p{color:rgba(232,234,240,.7);}
.section-dark .section-head h2{color:var(--text-inverse);}

/* ---------- 简介段落区 ---------- */
.intro-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:var(--sp-7);align-items:start;}
.intro-copy p+p{margin-top:22px;}
.intro-copy p{color:var(--text-2);}
.intro-copy strong{color:var(--text-1);font-weight:600;}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--sp-5);box-shadow:var(--shadow-card);
}
.aside-card h3{font-size:18px;margin-bottom:var(--sp-4);}
.aside-card .tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:rgba(94,123,10,.08);color:var(--neon-ink);
}
.tag-violet{background:rgba(75,52,201,.08);color:var(--violet-ink);}
.aside-list{margin-top:var(--sp-5);display:grid;gap:12px;}
.aside-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.75;}
.aside-list svg{flex-shrink:0;margin-top:5px;color:var(--neon-ink);}

/* ---------- 流程条（本页主视觉） ---------- */
.flow-strip{
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));
  gap:0;margin-bottom:var(--sp-7);
}
.flow-step{position:relative;text-align:center;padding:0 8px;}
.flow-step:not(:first-child)::before{
  content:"";position:absolute;top:27px;left:-50%;right:50%;height:2px;
  background:linear-gradient(90deg,rgba(94,123,10,.25),rgba(94,123,10,.55));
}
.step-dot{
  position:relative;z-index:1;width:54px;height:54px;margin:0 auto 14px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;border:2px solid var(--neon-ink);background:#fff;
  font-weight:700;font-size:18px;color:var(--neon-ink);
  font-variant-numeric:tabular-nums;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease);
}
.flow-step:hover .step-dot{background:var(--ink-900);color:var(--neon);border-color:var(--neon);transform:translateY(-3px);box-shadow:0 0 22px -6px rgba(201,255,61,.6);}
.step-name{font-size:15px;font-weight:600;color:var(--text-1);line-height:1.5;}
.step-hint{font-size:12px;color:var(--text-3);margin-top:4px;}

.flow-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-5);}
.flow-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--sp-5);box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.flow-card:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.35);box-shadow:0 1px 2px rgba(16,18,24,.06),0 18px 34px -20px rgba(16,18,24,.3);}
.flow-card .card-index{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  color:var(--neon-ink);letter-spacing:.08em;margin-bottom:var(--sp-3);
}
.flow-card h3{font-size:20px;margin-bottom:var(--sp-3);}
.flow-card p{font-size:15px;color:var(--text-2);line-height:1.85;}
.flow-card .note{
  margin-top:var(--sp-4);padding-top:var(--sp-4);border-top:1px dashed var(--line);
  font-size:13px;color:var(--text-3);line-height:1.75;
}
.flow-card.wide{grid-column:span 3;display:grid;grid-template-columns:220px minmax(0,1fr);gap:var(--sp-5);align-items:center;}
.flow-card.wide img{aspect-ratio:16/9;object-fit:cover;width:100%;}

/* ---------- 准备清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--sp-5);}
.check-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--sp-5);box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease);
}
.check-item:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.35);}
.check-item .ico{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(94,123,10,.08);color:var(--neon-ink);margin-bottom:var(--sp-4);
}
.check-item h3{font-size:17px;margin-bottom:8px;}
.check-item p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- 深色数据带 ---------- */
.stat-band{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--sp-5);}
.stat-cell{padding:var(--sp-5) 0;border-left:1px solid var(--line-dark);padding-left:var(--sp-5);}
.stat-cell:first-child{border-left:0;padding-left:0;}
.stat-cell .num{font-size:34px;font-weight:700;color:var(--neon);letter-spacing:-.02em;}
.stat-cell .lbl{font-size:14px;color:rgba(232,234,240,.68);margin-top:4px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:var(--sp-3);max-width:900px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-left:3px solid var(--neon);box-shadow:var(--shadow-card);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);
  font-size:17px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .sign{
  flex-shrink:0;width:22px;height:22px;position:relative;
  transition:transform var(--ease);
}
.faq-item summary .sign::before,
.faq-item summary .sign::after{
  content:"";position:absolute;background:var(--neon-ink);border-radius:2px;
}
.faq-item summary .sign::before{left:0;right:0;top:10px;height:2px;}
.faq-item summary .sign::after{top:0;bottom:0;left:10px;width:2px;transition:opacity var(--ease);}
.faq-item[open] summary .sign{transform:rotate(180deg);}
.faq-item[open] summary .sign::after{opacity:0;}
.faq-item .faq-body{
  padding:0 22px 20px 20px;border-top:1px solid var(--line);
  margin-top:0;font-size:15px;color:var(--text-2);line-height:1.85;
}
.faq-item .faq-body p{padding-top:16px;}

/* ---------- 交叉链接卡 ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--sp-5);}
.cross-card{
  display:flex;flex-direction:column;gap:var(--sp-3);
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--sp-5);box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease);
}
.cross-card:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.4);}
.cross-card .cover{overflow:hidden;border-radius:var(--r-img);}
.cross-card .cover img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform 200ms ease-out;}
.cross-card:hover .cover img{transform:scale(1.03);}
.cross-card h3{font-size:18px;}
.cross-card p{font-size:14px;color:var(--text-2);line-height:1.8;}
.cross-card .more{font-size:13px;font-weight:600;color:var(--neon-ink);margin-top:auto;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(90deg,rgba(8,9,12,.94),rgba(8,9,12,.72)),
             url(/assets/images/backpic/back-3.webp) center/cover no-repeat;
  border-top:1px solid rgba(201,255,61,.25);
  border-bottom:1px solid rgba(201,255,61,.25);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-6);
  padding:var(--sp-8) 0;
}
.cta-inner h2{color:var(--text-inverse);font-size:28px;max-width:640px;}
.cta-inner p{color:rgba(232,234,240,.7);font-size:15px;margin-top:10px;max-width:600px;}
.cta-actions{display:flex;gap:var(--sp-3);flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--ink-900);color:rgba(232,234,240,.65);
  font-size:14px;line-height:1.85;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0),rgba(201,255,61,.75),rgba(201,255,61,0));
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:var(--sp-6);
  padding:var(--sp-8) 0 var(--sp-7);
}
.footer-brand .brand{margin-bottom:var(--sp-4);}
.footer-brand p{max-width:360px;}
.socials{display:flex;gap:10px;margin-top:var(--sp-5);}
.socials a{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-dark);color:rgba(232,234,240,.7);
}
.socials a:hover{color:var(--neon);border-color:rgba(201,255,61,.5);background:rgba(201,255,61,.07);}
.footer-col h4{font-size:15px;color:var(--text-inverse);margin-bottom:var(--sp-4);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a:hover{color:var(--neon);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:var(--sp-3);justify-content:space-between;
  padding:var(--sp-5) 0;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(232,234,240,.55);
}

/* ---------- 返回顶部 & 移动吸底 ---------- */
.back-to-top{
  position:fixed;right:22px;bottom:26px;z-index:80;
  width:44px;height:44px;border-radius:50%;
  background:var(--ink-900);border:1px solid rgba(201,255,61,.5);color:var(--neon);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease),transform var(--ease);
}
.back-to-top.show{opacity:1;visibility:visible;}
.back-to-top:hover{transform:translateY(-3px);box-shadow:0 0 20px -6px rgba(201,255,61,.7);}
.mobile-cta{display:none;}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:100;background:rgba(8,9,12,.6);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer.open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:88%;max-width:340px;
  background:var(--ink-900);border-left:1px solid rgba(201,255,61,.24);
  padding:var(--sp-5);display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform 200ms ease-out;
}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-5);}
.drawer-close{background:transparent;border:1px solid var(--line-dark);color:var(--text-inverse);width:38px;height:38px;border-radius:var(--r-btn);cursor:pointer;}
.drawer-nav{display:grid;gap:4px;}
.drawer-nav a{
  display:flex;align-items:center;min-height:56px;padding:0 14px;border-radius:10px;
  color:rgba(232,234,240,.82);font-size:16px;
}
.drawer-nav a.active{background:rgba(201,255,61,.1);color:var(--neon);border-left:3px solid var(--neon);}
.drawer-foot{margin-top:auto;padding-top:var(--sp-5);border-top:1px solid var(--line-dark);}
.drawer-foot .btn{width:100%;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .page-hero .hero-inner{padding:60px 0 54px;}
  .flow-cards{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-card.wide{grid-column:span 2;grid-template-columns:1fr;}
  .cross-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .main-nav{display:none;}
  .menu-btn{display:inline-flex;}
  .icon-btn{display:none;}
  .page-hero h1{font-size:40px;}
  .intro-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-6);}
  .footer-brand{grid-column:span 2;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:var(--sp-8) 0;}
  .section-head h2{font-size:24px;}
  .page-hero .hero-inner{padding:48px 0 44px;}
  .page-hero h1{font-size:30px;}
  .flow-strip{grid-template-columns:1fr;gap:0;}
  .flow-step{display:grid;grid-template-columns:54px minmax(0,1fr);gap:16px;text-align:left;padding:0 0 26px;}
  .flow-step:not(:first-child)::before{
    left:26px;right:auto;top:-26px;bottom:0;width:2px;height:auto;
    background:linear-gradient(180deg,rgba(94,123,10,.25),rgba(94,123,10,.55));
  }
  .step-dot{margin:0;}
  .step-name{margin-top:14px;}
  .flow-cards{grid-template-columns:1fr;}
  .flow-card.wide{grid-column:span 1;}
  .check-grid{grid-template-columns:1fr;}
  .cross-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:1fr 1fr;gap:0;}
  .stat-cell{border-left:0;padding-left:0;border-top:1px solid var(--line-dark);padding-top:16px;}
  .stat-cell:first-child{border-top:0;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:var(--sp-7) 0 calc(var(--sp-7) + 62px);}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-brand{grid-column:span 1;}
  .footer-bottom{flex-direction:column;gap:6px;padding-bottom:96px;}
  .back-to-top{bottom:88px;}
  .mobile-cta{
    display:flex;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:85;
    padding:10px 16px;background:rgba(8,9,12,.96);
    border-top:1px solid rgba(201,255,61,.3);backdrop-filter:blur(8px);
  }
  .mobile-cta .btn{flex:1;min-height:44px;}
}
@media (max-width:480px){
  .page-hero h1{font-size:26px;}
  .section-head h2{font-size:22px;}
  .flow-card,.check-item,.cross-card,.aside-card{padding:16px;}
  .hero-meta{gap:var(--sp-4);}
  .hero-meta .num{font-size:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --ink-900:#08090C;
  --ink-800:#0E1016;
  --ink-700:#171A22;
  --neon:#C9FF3D;
  --neon-ink:#5E7B0A;
  --neon-soft:rgba(201,255,61,.16);
  --violet:#7C5CFF;
  --violet-ink:#4B34C9;
  --coral:#FF3B4E;
  --paper:#F3F4EF;
  --card:#FFFFFF;
  --line:#E3E5DF;
  --line-dark:rgba(255,255,255,.10);
  --text-1:#14161B;
  --text-2:#4A4F58;
  --text-3:#868C96;
  --text-inverse:#E8EAF0;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-card:0 1px 2px rgba(16,18,24,.06), 0 12px 28px -18px rgba(16,18,24,.22);
  --sh-dark:0 0 0 1px rgba(201,255,61,.18), 0 0 28px -10px rgba(201,255,61,.32);
  --ease:200ms ease-out;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  color:var(--text-1);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease),opacity var(--ease)}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.01em;font-weight:700;color:var(--text-1)}
h1{font-size:44px}
h2{font-size:32px}
h3{font-size:22px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.container{max-width:1240px;margin:0 auto;padding:0 32px}

/* ============ 通用按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-neon{background:var(--neon);color:#101208;box-shadow:0 0 0 1px rgba(201,255,61,.4),0 8px 20px -12px rgba(201,255,61,.7)}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-neon:active{transform:translateY(0)}
.btn-neon:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-ghost{border-color:rgba(232,234,240,.35);color:var(--text-inverse);background:rgba(255,255,255,.04)}
.btn-ghost:hover{border-color:var(--neon);background:rgba(201,255,61,.08);color:var(--neon)}
.btn-ink{background:var(--ink-900);color:var(--text-inverse);border-color:var(--ink-900)}
.btn-ink:hover{background:var(--ink-700);transform:translateY(-1px)}
.btn-outline-light{border-color:var(--line);color:var(--text-1);background:var(--card)}
.btn-outline-light:hover{border-color:var(--neon-ink);color:var(--neon-ink)}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  background:rgba(94,123,10,.08);color:var(--neon-ink);border:1px solid rgba(94,123,10,.18);
}
.chip-violet{background:rgba(75,52,201,.08);color:var(--violet-ink);border-color:rgba(75,52,201,.18)}
.chip-dark{background:var(--neon-soft);color:var(--neon);border-color:rgba(201,255,61,.35)}
.badge-new{background:rgba(255,59,78,.1);color:#C4202F;border-color:rgba(255,59,78,.24)}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--coral);display:inline-block;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-dark);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0) 0%,rgba(201,255,61,.6) 50%,rgba(201,255,61,0) 100%);
}
.site-header.is-scrolled{background:rgba(8,9,12,.94);backdrop-filter:blur(10px);box-shadow:0 12px 30px -22px rgba(0,0,0,.9)}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-inverse);font-weight:700;letter-spacing:-.01em}
.brand-mark{
  width:16px;height:16px;border-radius:4px;
  background:linear-gradient(135deg,var(--neon) 0%,#8FD400 100%);
  box-shadow:0 0 14px -2px rgba(201,255,61,.75);
}
.brand-text{font-size:17px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px;flex:1}
.nav-link{
  position:relative;font-size:15px;color:rgba(232,234,240,.78);
  padding:8px 0;transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--neon);opacity:0;transform:scaleX(.4);transition:opacity var(--ease),transform var(--ease);
}
.nav-link:hover{color:var(--neon)}
.nav-link:hover::after{opacity:1;transform:scaleX(1)}
.nav-link.active{
  color:var(--neon);background:rgba(201,255,61,.12);
  padding:8px 14px;border-radius:999px;box-shadow:0 0 16px -4px rgba(201,255,61,.55);
}
.nav-link.active::after{opacity:0}
.header-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);color:rgba(232,234,240,.8);
  border:1px solid var(--line-dark);transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.icon-btn:hover{color:var(--neon);border-color:rgba(201,255,61,.5);background:rgba(201,255,61,.08)}
.tool-divider{width:1px;height:22px;background:var(--line-dark)}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  color:var(--text-inverse);border:1px solid var(--line-dark);
  align-items:center;justify-content:center;
}
.menu-btn:hover{border-color:rgba(201,255,61,.5);color:var(--neon)}

/* ============ 迷你 Hero ============ */
.page-hero{position:relative;overflow:hidden;background:var(--ink-900);color:var(--text-inverse)}
.page-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.42;filter:saturate(1.05);
}
.page-hero-mask{
  position:absolute;inset:0;
  background:radial-gradient(120% 90% at 12% 10%,rgba(8,9,12,.62) 0%,rgba(8,9,12,.92) 62%,#08090C 100%);
}
.page-hero-inner{position:relative;padding:56px 0 72px}
.crumbs{font-size:12px;color:rgba(232,234,240,.55);letter-spacing:.02em}
.crumbs a:hover{color:var(--neon)}
.crumbs .sep{margin:0 8px;color:rgba(232,234,240,.32)}
.crumbs .current{color:var(--text-3)}
.page-hero h1{
  color:var(--text-inverse);font-size:44px;margin-top:20px;max-width:880px;
}
.page-hero .lede{
  margin-top:18px;max-width:720px;font-size:17px;line-height:1.9;
  color:rgba(232,234,240,.78);
}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.hero-chips li{
  font-size:13px;color:rgba(232,234,240,.82);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line-dark);background:rgba(255,255,255,.04);
}
.hero-chips li b{color:var(--neon);font-weight:700}

/* ============ 简介区 ============ */
.section{padding:96px 0}
.section-head{max-width:760px}
.section-head h2{margin-top:14px}
.section-head p{margin-top:16px;color:var(--text-2)}
.intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start;margin-top:44px}
.intro-copy p+p{margin-top:20px}
.intro-copy strong{color:var(--neon-ink)}
.fact-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:26px;
}
.fact-card h3{font-size:18px}
.fact-list{margin-top:18px;display:grid;gap:14px}
.fact-list li{display:flex;justify-content:space-between;gap:16px;font-size:15px;color:var(--text-2);border-bottom:1px dashed var(--line);padding-bottom:12px}
.fact-list li:last-child{border-bottom:0;padding-bottom:0}
.fact-list b{color:var(--text-1);font-weight:700}

/* ============ 标签横滑条 ============ */
.tag-rail{
  display:flex;gap:12px;overflow-x:auto;padding:6px 2px 14px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.tag-rail::-webkit-scrollbar{height:6px}
.tag-rail::-webkit-scrollbar-thumb{background:rgba(94,123,10,.28);border-radius:99px}
.tag-chip{
  scroll-snap-align:start;flex:0 0 auto;
  padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;
  background:var(--card);border:1px solid var(--line);color:var(--text-2);
  transition:border-color var(--ease),color var(--ease),background-color var(--ease),transform var(--ease);
}
.tag-chip:hover{border-color:var(--neon-ink);color:var(--neon-ink);transform:translateY(-1px)}
.tag-chip.is-active{background:var(--ink-900);border-color:var(--ink-900);color:var(--neon)}

/* ============ 卡片墙（合集型） ============ */
.wall{margin-top:34px;column-count:3;column-gap:24px}
.mcard{
  break-inside:avoid;display:block;margin:0 0 24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.mcard:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.4);box-shadow:0 18px 34px -22px rgba(16,18,24,.4)}
.mcard-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-700)}
.mcard-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease)}
.mcard:hover .mcard-cover img{transform:scale(1.03)}
.mcard-cover .cover-tag{
  position:absolute;left:14px;top:14px;
  background:rgba(8,9,12,.78);color:var(--neon);border:1px solid rgba(201,255,61,.35);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;backdrop-filter:blur(6px);
}
.mcard-body{padding:20px}
.mcard-body h3{font-size:19px;line-height:1.45}
.mcard-body p{margin-top:10px;font-size:15px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.mcard-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.mcard-link{margin-left:auto;font-size:13px;font-weight:600;color:var(--neon-ink)}
.mcard:hover .mcard-link{color:var(--violet-ink)}
.is-hidden{display:none}

/* ============ FAQ ============ */
.faq-list{margin-top:40px;display:grid;gap:14px;max-width:900px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--sh-card);overflow:hidden;position:relative;
  transition:border-color var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--neon);
  opacity:0;transition:opacity var(--ease);
}
.faq-item.is-open::before{opacity:1}
.faq-item.is-open{border-color:rgba(94,123,10,.32)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;justify-content:space-between;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--text-1);
}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1.5px solid var(--neon-ink);position:relative;transition:transform var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--neon-ink);border-radius:2px;
  left:50%;top:50%;transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:1.5px}
.faq-icon::after{width:1.5px;height:10px;transition:opacity var(--ease)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height var(--ease);
  padding:0 22px;
}
.faq-a p{padding:16px 0 20px 20px;border-top:1px solid var(--line);font-size:16px;color:var(--text-2)}

/* ============ 交叉链接 ============ */
.cross{margin-top:40px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cross-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-card);
  transition:transform var(--ease),border-color var(--ease);
}
.cross-card:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.4)}
.cross-card h3{font-size:17px}
.cross-card p{font-size:14px;color:var(--text-2);flex:1}
.cross-card .go{font-size:13px;font-weight:600;color:var(--neon-ink)}

/* ============ 底部 CTA ============ */
.cta-band{position:relative;overflow:hidden;background:var(--ink-900);color:var(--text-inverse)}
.cta-band-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34}
.cta-band-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,9,12,.94) 0%,rgba(8,9,12,.72) 60%,rgba(8,9,12,.9) 100%)}
.cta-band-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0}
.cta-band h2{color:var(--text-inverse);font-size:30px;max-width:640px}
.cta-band p{margin-top:12px;color:rgba(232,234,240,.75);font-size:16px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(232,234,240,.65);position:relative;font-size:14px}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0) 0%,rgba(201,255,61,.55) 50%,rgba(201,255,61,0) 100%);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px}
.footer-brand .brand{color:var(--text-inverse)}
.footer-brand p{margin-top:18px;max-width:380px;line-height:1.9;color:rgba(232,234,240,.62)}
.socials{display:flex;gap:10px;margin-top:22px}
.socials a{
  width:36px;height:36px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-dark);color:rgba(232,234,240,.7);
}
.socials a:hover{color:var(--neon);border-color:rgba(201,255,61,.5);background:rgba(201,255,61,.08)}
.footer-col h4{color:var(--text-inverse);font-size:15px;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a:hover{color:var(--neon)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 30px;
  color:rgba(232,234,240,.5);font-size:13px;
}

/* ============ 悬浮与吸底 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:var(--ink-900);color:var(--neon);border:1px solid rgba(201,255,61,.45);
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity var(--ease),transform var(--ease);
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{box-shadow:0 0 18px -4px rgba(201,255,61,.6)}
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:75;
  padding:10px 16px;background:rgba(8,9,12,.96);border-top:1px solid var(--line-dark);
  backdrop-filter:blur(10px);
}
.mobile-cta .btn{width:100%}

/* ============ 抽屉导航 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,5,8,.6);backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity var(--ease);z-index:88;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer-close{position:absolute;top:16px;right:18px;color:var(--text-inverse);width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line-dark);display:inline-flex;align-items:center;justify-content:center}
.drawer-foot .btn{width:100%}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  h1{font-size:40px}
  .page-hero h1{font-size:40px}
  h2{font-size:28px}
  .wall{column-count:3}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .menu-btn{display:inline-flex}
  .header-tools .btn-neon{display:none}
  .wall{column-count:2}
  .intro-grid{grid-template-columns:1fr;gap:32px}
  .cross{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px}
  .section{padding:76px 0}
  .cta-band-inner{flex-direction:column;align-items:flex-start;padding:56px 0}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:88%;max-width:380px;z-index:90;
    background:var(--ink-900);border-left:1px solid var(--line-dark);
    transform:translateX(100%);transition:transform var(--ease);
    display:flex;flex-direction:column;padding:22px 20px 26px;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-nav{display:grid;gap:4px;margin-top:44px}
  .drawer-nav a{
    display:flex;align-items:center;height:56px;padding:0 16px;
    color:rgba(232,234,240,.8);font-size:16px;border-radius:var(--r-btn);
    position:relative;border-left:3px solid transparent;
  }
  .drawer-nav a:hover{background:rgba(255,255,255,.04);color:var(--neon)}
  .drawer-nav a.active{color:var(--neon);border-left-color:var(--neon);background:rgba(201,255,61,.10)}
  .drawer-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line-dark)}
}
@media (max-width:767px){
  .container{padding:0 16px}
  h1{font-size:30px}
  .page-hero h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:18px}
  .section{padding:64px 0}
  .wall{column-count:1}
  .cross{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-actions .btn{width:100%}
  .mobile-cta{display:block}
  body{padding-bottom:72px}
  .to-top{bottom:86px;right:16px}
  .mcard-body{padding:16px}
}
@media (max-width:479px){
  body{font-size:16px}
  .page-hero-inner{padding:40px 0 56px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category5 */
:root{
  --ink-900:#08090C;
  --ink-800:#0E1016;
  --ink-700:#171A22;
  --neon:#C9FF3D;
  --neon-ink:#5E7B0A;
  --neon-soft:rgba(201,255,61,.16);
  --violet:#7C5CFF;
  --violet-ink:#4B34C9;
  --coral:#FF3B4E;
  --paper:#F3F4EF;
  --card:#FFFFFF;
  --line:#E3E5DF;
  --line-dark:rgba(255,255,255,.10);
  --text-1:#14161B;
  --text-2:#4A4F58;
  --text-3:#868C96;
  --text-inverse:#E8EAF0;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-card:0 1px 2px rgba(16,18,24,.06),0 12px 28px -18px rgba(16,18,24,.22);
  --shadow-dark:0 0 0 1px rgba(201,255,61,.18),0 0 28px -10px rgba(201,255,61,.32);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;line-height:1.9;color:var(--text-1);background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(8,9,12,.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:background .2s ease-out,box-shadow .2s ease-out;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0),rgba(201,255,61,.75) 60%,rgba(201,255,61,0));
}
.site-header.is-scrolled{background:rgba(6,7,10,.98);box-shadow:0 10px 30px -22px rgba(0,0,0,.9)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-inverse);font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{width:12px;height:12px;border-radius:3px;background:var(--neon);box-shadow:0 0 12px rgba(201,255,61,.7);flex:none}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:14px}
.nav-link{
  padding:8px 14px;border-radius:var(--r-pill);font-size:15px;color:rgba(232,234,240,.78);
  transition:color .18s ease-out,background .18s ease-out,box-shadow .18s ease-out;white-space:nowrap;
}
.nav-link:hover{color:var(--neon);background:rgba(201,255,61,.08)}
.nav-link.active{color:var(--neon);background:rgba(201,255,61,.12);box-shadow:0 0 0 4px rgba(201,255,61,.09)}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:14px}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;border-radius:var(--r-pill);
  color:rgba(232,234,240,.78);transition:color .18s ease-out,background .18s ease-out;
}
.icon-btn:hover{color:var(--neon);background:rgba(201,255,61,.10)}
.tool-divider{width:1px;height:22px;background:var(--line-dark)}
.menu-btn{display:none;width:38px;height:38px;place-items:center;border-radius:var(--r-btn);color:var(--text-inverse)}
.menu-btn:hover{background:rgba(201,255,61,.10);color:var(--neon)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:transform .18s ease-out,filter .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  border:1px solid transparent;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-neon{background:var(--neon);color:#0A0C05}
.btn-neon:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-neon:active{transform:translateY(0)}
.btn-coral{background:var(--coral);color:#fff}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-coral:active{transform:translateY(0)}
.btn-ghost{border-color:rgba(201,255,61,.45);color:var(--text-inverse);background:transparent}
.btn-ghost:hover{background:rgba(201,255,61,.08);border-color:var(--neon);color:var(--neon)}
.btn-outline-ink{border-color:var(--line);color:var(--text-1);background:var(--card)}
.btn-outline-ink:hover{border-color:var(--neon-ink);color:var(--neon-ink);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn.is-loading{color:transparent;position:relative}
.btn.is-loading::after{
  content:"";position:absolute;inset:0;margin:auto;width:26px;height:6px;
  background:
    radial-gradient(circle at 3px 3px,currentColor 2.6px,transparent 3px) 0 0/9px 6px repeat-x;
  color:var(--neon);animation:pulse 1s steps(3,end) infinite;
}
@keyframes pulse{0%{opacity:.4}50%{opacity:1}100%{opacity:.4}}

/* ---------- hero ---------- */
.page-hero{
  position:relative;background-color:var(--ink-900);
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid rgba(201,255,61,.35);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,9,12,.95) 0%,rgba(8,9,12,.82) 48%,rgba(14,16,22,.62) 100%);
}
.page-hero .container{position:relative;padding-top:78px;padding-bottom:78px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(201,255,61,.12);border:1px solid rgba(201,255,61,.35);
  color:var(--neon);font-size:13px;letter-spacing:.02em;
}
.hero-dot{width:7px;height:7px;border-radius:50%;background:var(--coral);animation:breathe 2.2s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(255,59,78,.55)}50%{opacity:.65;box-shadow:0 0 0 6px rgba(255,59,78,0)}}
.page-hero h1{
  margin-top:20px;font-size:44px;color:var(--text-inverse);max-width:880px;
}
.page-hero h1 em{font-style:normal;color:var(--neon)}
.page-hero .lede{
  margin-top:18px;max-width:720px;color:rgba(232,234,240,.76);font-size:17px;
}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:32px}
.hero-stats div{display:flex;flex-direction:column;gap:2px}
.hero-stats b{color:var(--neon);font-size:24px;letter-spacing:-.01em}
.hero-stats span{color:rgba(232,234,240,.6);font-size:13px}

/* ---------- breadcrumb ---------- */
.crumb{padding:18px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--text-3)}
.crumb li::after{content:"/";margin-left:8px;color:var(--text-3)}
.crumb li:last-child::after{content:""}
.crumb a:hover{color:var(--neon-ink)}
.crumb .current{color:var(--text-3)}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section-tight{padding:48px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:32px}
.section-head p{margin-top:14px;color:var(--text-2)}
.section-head .eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--neon-ink);
  text-transform:uppercase;margin-bottom:10px;
}

/* ---------- intro ---------- */
.intro-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:start}
.intro-text p+p{margin-top:18px}
.intro-text p{color:var(--text-2)}
.intro-aside{
  background:var(--ink-900);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-dark);
}
.intro-aside h3{color:var(--text-inverse);font-size:18px}
.intro-aside ul{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.intro-aside li{display:flex;gap:10px;color:rgba(232,234,240,.76);font-size:14px;line-height:1.7}
.intro-aside li svg{flex:none;margin-top:5px;color:var(--neon)}

/* ---------- qa layout ---------- */
.qa-layout{display:grid;grid-template-columns:272px minmax(0,1fr);gap:32px;align-items:start}
.qa-side{position:sticky;top:96px}
.qa-side-inner{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-card);
}
.qa-side h3{font-size:15px;color:var(--text-3);font-weight:600;letter-spacing:.02em}
.qa-anchors{margin-top:14px;display:flex;flex-direction:column;gap:2px}
.qa-anchors a{
  display:block;padding:10px 12px;border-left:3px solid transparent;border-radius:0 8px 8px 0;
  font-size:15px;color:var(--text-2);transition:color .18s ease-out,background .18s ease-out,border-color .18s ease-out;
}
.qa-anchors a:hover{color:var(--neon-ink);background:rgba(201,255,61,.10)}
.qa-anchors a.active{color:var(--neon-ink);background:rgba(201,255,61,.14);border-left-color:var(--neon-ink);font-weight:600}
.qa-side-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.8}

.qa-group{margin-bottom:40px}
.qa-group:last-child{margin-bottom:0}
.qa-group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.qa-group-head h2{font-size:26px}
.qa-group-head .tag{
  padding:3px 10px;border-radius:var(--r-pill);font-size:12px;
  color:var(--neon-ink);background:rgba(201,255,61,.16);
}

.acc{display:flex;flex-direction:column;gap:12px}
.acc-item{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-card);overflow:hidden;transition:border-color .18s ease-out,transform .18s ease-out;
}
.acc-item:hover{border-color:rgba(94,123,10,.32)}
.acc-item.open{border-color:rgba(94,123,10,.42)}
.acc-item.open::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--neon);border-radius:3px 0 0 3px;
}
.acc-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--text-1);
}
.acc-icon{
  flex:none;width:24px;height:24px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text-2);transition:transform .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.acc-item.open .acc-icon{transform:rotate(180deg);color:var(--neon-ink);border-color:rgba(94,123,10,.4)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.acc-a{padding:0 22px 20px 22px;border-top:1px solid var(--line);margin-top:0;padding-top:16px;color:var(--text-2);font-size:16px}
.acc-a strong{color:var(--neon-ink)}
.acc-a ol{margin:12px 0 0;padding-left:22px;display:flex;flex-direction:column;gap:8px;line-height:1.8}
.acc-a ol li::marker{color:var(--neon-ink);font-weight:700}

/* ---------- feature block ---------- */
.feature-block{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--shadow-card);
}
.feature-block figure{margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid rgba(201,255,61,.28)}
.feature-block img{width:100%;aspect-ratio:16/10;object-fit:cover}
.feature-block h2{font-size:28px}
.feature-block p{margin-top:14px;color:var(--text-2)}
.feature-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.feature-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2)}
.feature-list svg{flex:none;margin-top:6px;color:var(--neon-ink)}

/* ---------- cross links ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cross-card{
  display:flex;flex-direction:column;gap:10px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.cross-card:hover{transform:translateY(-3px);border-color:rgba(94,123,10,.3);box-shadow:0 1px 2px rgba(16,18,24,.06),0 18px 34px -20px rgba(16,18,24,.28)}
.cross-card .thumb{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.cross-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .22s ease-out}
.cross-card:hover .thumb img{transform:scale(1.03)}
.cross-card h3{font-size:18px}
.cross-card p{font-size:14px;color:var(--text-2);line-height:1.75}
.cross-card .more{font-size:13px;color:var(--neon-ink);font-weight:600}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;background-color:var(--ink-900);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;overflow:hidden;
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,9,12,.94),rgba(8,9,12,.7))}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 0}
.cta-inner h2{font-size:30px;color:var(--text-inverse);max-width:660px}
.cta-inner p{margin-top:12px;color:rgba(232,234,240,.72);max-width:600px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--ink-900);padding-top:64px;color:rgba(232,234,240,.65)}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(201,255,61,0),rgba(201,255,61,.75) 60%,rgba(201,255,61,0));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer-brand .brand{color:var(--text-inverse)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;max-width:340px}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  width:34px;height:34px;display:grid;place-items:center;border-radius:var(--r-pill);
  border:1px solid var(--line-dark);color:rgba(232,234,240,.7);transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.socials a:hover{color:var(--neon);border-color:rgba(201,255,61,.5);background:rgba(201,255,61,.08)}
.footer-col h4{font-size:15px;color:var(--text-inverse);margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-col a{transition:color .18s ease-out}
.footer-col a:hover{color:var(--neon)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 28px;font-size:13px;color:rgba(232,234,240,.5);
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:var(--r-pill);
  background:var(--ink-800);color:var(--neon);border:1px solid rgba(201,255,61,.45);
  display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s ease-out;z-index:70;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--ink-700)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(8,9,12,.96);
  transform:translateX(100%);transition:transform .24s ease-out;display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:68px;padding:0 20px;border-bottom:1px solid var(--line-dark)}
.drawer-nav{padding:8px 0;flex:1;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;height:56px;padding:0 22px;color:rgba(232,234,240,.8);
  border-left:3px solid transparent;font-size:16px;
}
.drawer-nav a.active{color:var(--neon);border-left-color:var(--neon);background:rgba(201,255,61,.07)}
.drawer-foot{padding:18px 20px 26px;border-top:1px solid var(--line-dark)}
.drawer-foot .btn{width:100%}

/* ---------- mobile sticky cta ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:65;display:none;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(8,9,12,.96);
  border-top:1px solid rgba(201,255,61,.28);
}
.mobile-cta .btn{flex:1}

/* ---------- skeleton ---------- */
.skeleton{
  border-radius:var(--r-img);background:linear-gradient(90deg,rgba(201,255,61,.10),rgba(201,255,61,.22),rgba(201,255,61,.10));
  background-size:200% 100%;animation:shimmer 1.4s ease-in-out infinite;
}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .page-hero h1{font-size:40px}
  .cross-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .menu-btn{display:grid}
  .container{padding:0 24px}
  .page-hero .container{padding-top:60px;padding-bottom:60px}
  .page-hero h1{font-size:36px}
  .section{padding:64px 0}
  .qa-layout{grid-template-columns:1fr}
  .qa-side{position:static}
  .qa-anchors{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;scroll-snap-type:x mandatory}
  .qa-anchors a{white-space:nowrap;border-left:0;border-bottom:2px solid transparent;border-radius:8px;scroll-snap-align:start}
  .qa-anchors a.active{border-left:0;border-bottom-color:var(--neon-ink)}
  .intro-grid{grid-template-columns:1fr}
  .feature-block{grid-template-columns:1fr;padding:24px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  body{font-size:16px}
  .page-hero h1{font-size:30px}
  .section{padding:52px 0}
  .section-head h2{font-size:24px}
  .qa-group-head h2{font-size:22px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 0}
  .cta-inner h2{font-size:24px}
  .cross-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .mobile-cta{display:flex}
  .to-top{bottom:86px;right:16px}
  .hero-stats{gap:22px}
  .acc-q{padding:16px;font-size:16px}
  .acc-a{padding:14px 16px 18px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .page-hero h1{font-size:27px}
  .hero-stats b{font-size:20px}
  .btn{padding:0 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}