/* roulang page: index */
:root{
  --ink-0:#06080F;
  --ink-1:#0B1020;
  --ink-2:#141B33;
  --neon:#2FE3C4;
  --viol:#7C6CFF;
  --amber:#FFB460;
  --t1:#EDF2FF;
  --t2:#A3AEC9;
  --t3:#6B7699;
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(20,27,51,.55);
  --r-card:18px;
  --r-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--t2);
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:1rem;line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:14px}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--t1);line-height:1.3}
p{margin:0}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}
.mono{font-family:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,monospace;font-variant-numeric:tabular-nums}

.aurora{position:fixed;inset:0;pointer-events:none;z-index:0}
.aurora i{position:absolute;border-radius:50%;filter:blur(120px);opacity:.14;animation:breathe 6s ease-in-out infinite}
.aurora i:nth-child(1){width:560px;height:560px;background:#2FE3C4;top:-170px;left:-140px}
.aurora i:nth-child(2){width:480px;height:480px;background:#7C6CFF;bottom:-160px;right:-120px;animation-delay:-3s}
@keyframes breathe{0%,100%{opacity:.12;transform:scale(1)}50%{opacity:.18;transform:scale(1.06)}}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}
@media(min-width:1280px){.container{max-width:1280px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(6,8,15,.62);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .18s var(--ease);
}
.site-header.scrolled{background:rgba(6,8,15,.90)}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  font-size:15px;font-weight:800;color:#04110D;
  background:linear-gradient(135deg,#2FE3C4,#7C6CFF);
  box-shadow:0 0 18px -6px rgba(47,227,196,.8);
}
.logo-text{display:flex;flex-direction:column;line-height:1.12}
.logo-main{color:var(--t1);font-weight:700;font-size:15px;letter-spacing:.01em}
.logo-sub{color:var(--t3);font-size:10.5px;letter-spacing:.16em}
.desktop-nav{display:none;align-items:center;gap:30px}
@media(min-width:1024px){.desktop-nav{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  color:var(--t2);font-size:14.5px;transition:color .18s var(--ease);
}
.nav-link:hover{color:var(--t1)}
.nav-link.active{color:var(--t1)}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 6px rgba(47,227,196,.9);
}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line-strong);background:transparent;color:var(--t2);
  cursor:pointer;transition:all .18s var(--ease);
}
.icon-btn:hover{color:var(--t1);border-color:rgba(255,255,255,.34);background:rgba(255,255,255,.05)}
.hamburger{display:grid}
@media(min-width:1024px){.hamburger{display:none}}
.mobile-drawer{
  position:fixed;left:0;right:0;top:68px;bottom:0;z-index:49;
  background:rgba(6,8,15,.97);backdrop-filter:blur(16px);
  transform:translateX(102%);transition:transform .28s var(--ease);
  overflow-y:auto;padding:6px 20px 130px;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;border-bottom:1px solid var(--line);
  color:var(--t1);font-size:16px;
}
.drawer-link.active{color:var(--neon)}
.drawer-cta{position:fixed;left:20px;right:20px;bottom:22px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:56px 0 40px}
@media(min-width:1024px){.hero{padding:92px 0 56px}}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,8,15,.58) 0%,rgba(6,8,15,.93) 100%);
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;border:1px solid rgba(47,227,196,.32);
  background:rgba(47,227,196,.08);color:var(--neon);
  font-size:12px;letter-spacing:.08em;
}
.hero-title{
  margin-top:20px;
  font-size:clamp(1.75rem,4.6vw,3.25rem);
  font-weight:800;line-height:1.2;letter-spacing:-.01em;
}
.hero-sub{margin-top:16px;color:var(--t1);font-size:1.0625rem;font-weight:500}
.hero-desc{margin-top:14px;max-width:34em;color:var(--t2);font-size:.96rem;line-height:1.85}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-card{padding:26px;box-shadow:0 24px 48px -28px rgba(0,0,0,.85)}
.hero-card-head{display:flex;align-items:center;gap:9px;color:var(--t3);font-size:12.5px;letter-spacing:.1em}
.hero-card-head .dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px rgba(47,227,196,.9)}
.hero-stat-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}
.hero-stat{
  border:1px solid var(--line);border-radius:12px;padding:14px 16px;
  background:rgba(255,255,255,.03);
}
.hero-stat-num{display:block;font-size:1.6rem;font-weight:800;color:var(--t1);font-variant-numeric:tabular-nums;line-height:1.1}
.hero-stat-label{display:block;margin-top:4px;font-size:12.5px;color:var(--t3)}
.hero-progress{margin-top:22px}
.hero-progress-head{display:flex;justify-content:space-between;font-size:12.5px;color:var(--t3);margin-bottom:9px}
.hero-progress-head .mono{color:var(--neon)}
.hero-card-note{margin-top:18px;font-size:13px;color:var(--t3);line-height:1.7}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px}
.badge-pill{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 15px;
  border-radius:999px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.03);color:var(--t2);font-size:12.5px;
}
.badge-pill b{color:var(--neon);font-weight:600}

.progress-track{height:8px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;position:relative}
.progress-fill{
  height:100%;border-radius:999px;position:relative;
  background:linear-gradient(90deg,#2FE3C4,#7C6CFF);
}
.progress-fill::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent);
  animation:sweep 2.4s linear infinite;
}
@keyframes sweep{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}

/* ---------- buttons ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:50px;padding:0 28px;border:0;border-radius:999px;
  font-size:15px;font-weight:700;color:#04110D;cursor:pointer;
  background:linear-gradient(135deg,#2FE3C4,#7C6CFF);
  box-shadow:0 0 24px -4px rgba(47,227,196,.55);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 34px -2px rgba(47,227,196,.72)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:50px;padding:0 26px;border-radius:999px;
  border:1px solid var(--line-strong);background:transparent;color:var(--t1);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.3);transform:translateY(-2px)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--t2);
  font-size:14px;min-height:44px;transition:color .18s var(--ease);
}
.btn-text:hover{color:var(--neon)}
.btn-text .arrow{transition:transform .18s var(--ease)}
.btn-text:hover .arrow{transform:translateX(3px)}

/* ---------- sections ---------- */
.section{padding:58px 0;position:relative;z-index:1}
@media(min-width:1024px){.section{padding:96px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-title{font-size:clamp(1.35rem,2.6vw,2.1rem);font-weight:700;letter-spacing:-.005em}
.section-sub{margin-top:8px;color:var(--t3);font-size:13px}
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-card);
}
.card{
  background:var(--glass);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-card);padding:24px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(47,227,196,.45)}
.card h3{font-size:1.125rem;font-weight:600;margin-bottom:10px}
.card p{color:var(--t2);font-size:.94rem;line-height:1.8}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;
  border:1px solid rgba(124,108,255,.4);background:rgba(124,108,255,.14);color:#B7AEFF;
}
.tag-amber{border-color:rgba(255,180,96,.4);background:rgba(255,180,96,.14);color:#FFC98D}
.tag-neon{border-color:rgba(47,227,196,.4);background:rgba(47,227,196,.12);color:#6FEFD8}

.media-card{
  overflow:hidden;border-radius:var(--r-card);border:1px solid rgba(255,255,255,.08);
  background:var(--glass);backdrop-filter:blur(14px);
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.media-card:hover{transform:translateY(-2px);border-color:rgba(47,227,196,.45)}
.media-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;border-bottom:1px solid rgba(255,255,255,.06);transition:transform .3s var(--ease)}
.media-card:hover img{transform:scale(1.03)}
.media-body{padding:22px 24px 24px}
.media-body h3{font-size:1.125rem;font-weight:600;margin-bottom:10px}
.media-body p{color:var(--t2);font-size:.94rem}

/* timeline */
.timeline{position:relative;padding-left:6px}
.tl-item{position:relative;padding:0 0 34px 40px;border-left:1px solid var(--line)}
.tl-item:last-child{border-left-color:transparent;padding-bottom:0}
.tl-num{
  position:absolute;left:-13px;top:2px;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:11.5px;font-weight:700;color:var(--neon);
  background:#0A1226;border:1px solid rgba(47,227,196,.5);
  box-shadow:0 0 12px -2px rgba(47,227,196,.7);
  font-variant-numeric:tabular-nums;
}
.tl-item h3{font-size:1.0625rem;font-weight:600;margin-bottom:8px}
.tl-item p{color:var(--t2);font-size:.94rem;max-width:48em}

/* asymmetry cards */
.asym-big{position:relative;overflow:hidden}
.asym-big img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px}
.asym-small{padding:18px 20px}
.asym-small .idx{
  font-size:11.5px;color:var(--t3);letter-spacing:.14em;
  font-family:ui-monospace,monospace;
}

/* progress rows */
.prow{display:grid;grid-template-columns:1fr;gap:10px;padding:20px 0;border-bottom:1px solid var(--line)}
.prow:last-child{border-bottom:0}
@media(min-width:768px){
  .prow{grid-template-columns:180px 1fr 70px;align-items:center;gap:22px}
}
.prow-label{color:var(--t1);font-size:14.5px;font-weight:500}
.prow-val{color:var(--neon);font-size:14px;text-align:left}
@media(min-width:768px){.prow-val{text-align:right}}

/* data points */
.data-strip{display:grid;grid-template-columns:1fr;gap:0;margin-top:34px}
@media(min-width:768px){.data-strip{grid-template-columns:repeat(3,1fr)}}
.data-point{padding:22px 4px;border-top:1px solid var(--line)}
@media(min-width:768px){
  .data-point{padding:0 26px}
  .data-point:first-child{padding-left:0}
  .data-point + .data-point{border-left:1px solid var(--line);border-top:0}
}
.data-point b{display:block;font-size:1.6rem;font-weight:800;color:var(--t1);font-variant-numeric:tabular-nums;line-height:1.2}
.data-point span{display:block;margin-top:6px;font-size:13px;color:var(--t3)}

/* scenario rows */
.scene-row{
  display:grid;grid-template-columns:1fr;gap:10px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:padding-left .18s var(--ease);
}
@media(min-width:768px){.scene-row{grid-template-columns:64px 1fr 1fr;gap:28px;align-items:baseline}}
.scene-row:hover{padding-left:10px}
.scene-row .idx{font-family:ui-monospace,monospace;font-size:13px;color:var(--neon);letter-spacing:.1em}
.scene-row h3{font-size:1.0625rem;font-weight:600}
.scene-row p{color:var(--t3);font-size:.94rem}

/* CMS cards */
.cms-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:768px){.cms-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.cms-grid{grid-template-columns:repeat(3,1fr)}}
.cms-card{
  display:flex;flex-direction:column;overflow:hidden;height:100%;
  border-radius:var(--r-card);border:1px solid rgba(255,255,255,.08);
  background:var(--glass);backdrop-filter:blur(14px);
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.cms-card:hover{transform:translateY(-2px);border-color:rgba(47,227,196,.45)}
.cms-cover{position:relative;aspect-ratio:16/9;background:var(--ink-2);overflow:hidden}
.cms-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s var(--ease)}
.cms-card:hover .cms-cover img{transform:scale(1.03)}
.cms-cover::after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.06);border-radius:0;pointer-events:none}
.cms-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.cms-body h3{
  font-size:1.0625rem;font-weight:600;line-height:1.5;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-sum{
  color:var(--t2);font-size:.9rem;line-height:1.75;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--t3);
}
.cms-foot .read{color:var(--t2);transition:color .18s var(--ease)}
.cms-card:hover .cms-foot .read{color:var(--neon)}
.empty-state{
  max-width:520px;margin:0 auto;padding:44px 28px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-ring{
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;
  border:1px dashed rgba(255,255,255,.22);color:var(--t3);
}

/* FAQ */
.faq-list{border-radius:var(--r-card);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line);background:var(--glass)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:58px;padding:14px 22px;background:transparent;border:0;cursor:pointer;
  text-align:left;color:var(--t1);font-size:15px;font-weight:600;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--neon)}
.faq-q .plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .24s var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--t3);border-radius:2px;
}
.faq-q .plus::before{left:0;right:0;top:10px;height:2px}
.faq-q .plus::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.open .faq-q .plus{transform:rotate(45deg)}
.faq-item.open .faq-q .plus::before,.faq-item.open .faq-q .plus::after{background:var(--neon)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 22px 22px;color:var(--t2);font-size:.94rem;line-height:1.85}

/* CTA */
.cta-band{position:relative;overflow:hidden;padding:48px 32px;text-align:center}
@media(min-width:768px){.cta-band{padding:56px 56px}}
.cta-band::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.20;
}
.cta-band::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(120% 120% at 15% 0%,rgba(47,227,196,.18),transparent 60%),
             radial-gradient(120% 120% at 85% 100%,rgba(124,108,255,.18),transparent 60%);
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{margin-bottom:12px}
.cta-band p{max-width:44em;margin:0 auto;color:var(--t2);font-size:.96rem}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px}

/* footer */
.site-footer{
  position:relative;z-index:1;background:#04060C;border-top:1px solid var(--line);
  padding:56px 0 26px;margin-top:20px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
.footer-title{font-size:12.5px;color:var(--t3);letter-spacing:.16em;text-transform:uppercase;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:var(--t2);font-size:14px;transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--neon);text-decoration:underline;text-underline-offset:3px}
.footer-desc{color:var(--t3);font-size:13.5px;line-height:1.9;max-width:32em;margin-top:16px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--t3);
}

.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B1020}
::-webkit-scrollbar-thumb{background:rgba(47,227,196,.45);border-radius:999px;border:2px solid #0B1020}
::-webkit-scrollbar-thumb:hover{background:rgba(47,227,196,.7)}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-0:#06080F;
  --ink-1:#0B1020;
  --ink-2:#141B33;
  --glass:rgba(20,27,51,.55);
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.16);
  --neon:#2FE3C4;
  --violet:#7C6CFF;
  --amber:#FFB460;
  --t1:#EDF2FF;
  --t2:#A3AEC9;
  --t3:#6B7699;
  --success:#3DDC97;
  --error:#FF6B81;
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--t2);
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
time,.num{font-variant-numeric:tabular-nums;font-family:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}

body::before,
body::after{
  content:"";
  position:fixed;
  width:520px;
  height:520px;
  border-radius:50%;
  filter:blur(120px);
  opacity:.15;
  z-index:0;
  pointer-events:none;
}
body::before{background:#2FE3C4;top:-180px;left:-160px;animation:breathe 6s ease-in-out infinite}
body::after{background:#7C6CFF;bottom:-220px;right:-180px;animation:breathe 6s ease-in-out infinite reverse}

@keyframes breathe{0%,100%{opacity:.13}50%{opacity:.19}}
@keyframes sweep{0%{transform:translateX(-100%)}100%{transform:translateX(240%)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1280px){.container{max-width:1280px}}

.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  display:flex;
  align-items:center;
  height:68px;
  background:rgba(11,16,32,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,8,15,.9);border-bottom-color:rgba(255,255,255,.1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}

.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(135deg,#2FE3C4,#7C6CFF);
  color:#06121A;font-weight:800;font-size:16px;
  box-shadow:0 0 20px -6px rgba(47,227,196,.7);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:15px;font-weight:700;color:var(--t1);letter-spacing:.02em}
.logo-sub{font-size:10.5px;color:var(--t3);letter-spacing:.2em}

.desktop-nav{display:none;align-items:center;gap:34px}
@media (min-width:1024px){.desktop-nav{display:flex}}
.nav-link{
  position:relative;
  font-size:14px;
  color:var(--t2);
  padding:6px 0;
  transition:color .18s var(--ease);
  min-height:44px;
  display:inline-flex;
  align-items:center;
}
.nav-link:hover{color:var(--t1)}
.nav-link.active{color:var(--t1)}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(47,227,196,.7);
}

.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:var(--r-sm);
  color:var(--t2);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.icon-btn:hover{color:var(--t1);border-color:rgba(47,227,196,.55);background:rgba(47,227,196,.07)}
.hamburger{display:inline-flex}
@media (min-width:1024px){.hamburger{display:none}}
.header-actions .icon-btn:first-child{display:none}
@media (min-width:640px){.header-actions .icon-btn:first-child{display:inline-flex}}

.drawer{
  position:fixed;
  top:68px;left:0;right:0;bottom:0;
  z-index:55;
  background:rgba(6,8,15,.98);
  backdrop-filter:blur(14px);
  padding:8px 20px 96px;
  overflow-y:auto;
  opacity:0;
  transform:translateY(-10px);
  pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.drawer.open{opacity:1;transform:none;pointer-events:auto}
@media (min-width:1024px){.drawer{display:none}}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;
  border-bottom:1px solid var(--line);
  color:var(--t2);font-size:15px;
}
.drawer-link.active{color:var(--neon)}
.drawer-cta{position:fixed;left:20px;right:20px;bottom:20px;z-index:56}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#2FE3C4 0%,#7C6CFF 100%);
  color:#06121A;
  box-shadow:0 0 24px -4px rgba(47,227,196,.55);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 34px -2px rgba(47,227,196,.7);filter:brightness(1.08)}
.btn-secondary{border:1px solid var(--line-strong);color:var(--t1);background:transparent}
.btn-secondary:hover{background:rgba(255,255,255,.06);transform:translateY(-1px);border-color:rgba(255,255,255,.28)}
.btn:active{transform:translateY(0) scale(.99)}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--t2);font-size:14px;
  transition:color .18s var(--ease);
}
.link-arrow svg{transition:transform .18s var(--ease)}
.link-arrow:hover{color:var(--neon)}
.link-arrow:hover svg{transform:translateX(3px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:999px;
  font-size:12px;
  border:1px solid var(--line-strong);
  color:var(--t2);
  background:rgba(255,255,255,.03);
  white-space:nowrap;
}
.badge-violet{color:#C9C3FF;border-color:rgba(124,108,255,.45);background:rgba(124,108,255,.14)}
.badge-amber{color:#FFD8AB;border-color:rgba(255,180,96,.45);background:rgba(255,180,96,.14)}

/* ---------- reading progress ---------- */
.reading-progress{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:linear-gradient(90deg,#2FE3C4,#7C6CFF);
  box-shadow:0 0 12px rgba(47,227,196,.6);
  z-index:70;
  transition:width .12s linear;
}

/* ---------- article head ---------- */
.page-shell{padding:34px 0 96px}
@media (max-width:767px){.page-shell{padding:24px 0 64px}}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t3);
  margin-bottom:16px;
}
.breadcrumb a{transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .current{color:var(--t1);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-hero{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:#0B1020 url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:38px 26px 30px;
  margin-bottom:34px;
}
@media (min-width:768px){.article-hero{padding:52px 48px 42px}}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,8,15,.55) 0%,rgba(6,8,15,.92) 100%);
}
.article-hero > *{position:relative;z-index:1}

.article-title{
  font-size:clamp(1.75rem,4.6vw,3.25rem);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--t1);
  margin-bottom:20px;
  max-width:24em;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--t3);
  padding-top:18px;
  border-top:1px solid var(--line);
}
.meta-row .divider{width:1px;height:14px;background:rgba(255,255,255,.14)}

/* ---------- layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;align-items:start}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:52px}
}

.article-body{
  font-size:1.0625rem;
  line-height:1.9;
  color:var(--t2);
  max-width:46em;
  animation:fadeUp .5s var(--ease) both;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;
  font-size:clamp(1.35rem,2.6vw,1.75rem);
  font-weight:700;
  line-height:1.35;
  color:var(--t1);
  margin:44px 0 18px;
  padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;
  width:4px;height:1.05em;border-radius:2px;
  background:var(--neon);box-shadow:0 0 12px rgba(47,227,196,.65);
}
.article-body h3{
  font-size:1.25rem;font-weight:600;color:var(--t1);
  margin:32px 0 14px;line-height:1.4;
}
.article-body h4{font-size:1.0625rem;font-weight:600;color:var(--t1);margin:26px 0 12px}
.article-body strong{color:var(--t1);font-weight:600}
.article-body a{color:var(--neon);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{text-decoration-thickness:2px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:4px}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.78em;
  width:6px;height:6px;border-radius:50%;
  background:var(--neon);box-shadow:0 0 8px rgba(47,227,196,.6);
}
.article-body ol{counter-reset:item}
.article-body ol li::before{
  counter-increment:item;content:counter(item) ".";
  position:absolute;left:0;top:0;
  color:var(--neon);font-weight:600;font-size:.95rem;
}
.article-body blockquote{
  margin:26px 0;
  padding:18px 22px;
  border-left:3px solid var(--neon);
  background:rgba(47,227,196,.06);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--t1);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;
  border-radius:var(--r-img);
  border:1px solid rgba(255,255,255,.06);
  margin:26px auto;
}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:12px;color:var(--t3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:.95rem;
  border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:rgba(255,255,255,.04);color:var(--t1);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ---------- sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:20px}
@media (min-width:1024px){.sidebar{position:sticky;top:96px}}

.side-card{padding:24px}
.side-title{
  font-size:13px;color:var(--t3);letter-spacing:.14em;
  text-transform:uppercase;margin-bottom:16px;
}
.side-list{display:flex;flex-direction:column;gap:4px}
.side-list a{
  display:flex;align-items:center;gap:10px;
  min-height:44px;font-size:14px;color:var(--t2);
  border-bottom:1px solid var(--line);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.side-list a:last-child{border-bottom:0}
.side-list a::before{
  content:"";width:5px;height:5px;border-radius:50%;
  background:rgba(255,255,255,.25);transition:background .18s var(--ease),box-shadow .18s var(--ease);
}
.side-list a:hover{color:var(--t1);padding-left:4px}
.side-list a:hover::before{background:var(--neon);box-shadow:0 0 8px rgba(47,227,196,.7)}

.side-cta{padding:24px;position:relative;overflow:hidden}
.side-cta img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-img);border:1px solid rgba(255,255,255,.06);
  margin-bottom:18px;
}
.side-cta h3{font-size:1.125rem;font-weight:600;color:var(--t1);margin-bottom:10px;line-height:1.45}
.side-cta p{font-size:13.5px;color:var(--t2);line-height:1.8;margin-bottom:18px}
.side-cta .btn{width:100%;min-height:46px;padding:0 20px}

/* ---------- related ---------- */
.related-section{margin-top:56px;padding-top:34px;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:clamp(1.2rem,2.2vw,1.5rem);font-weight:700;color:var(--t1)}
.section-head p{font-size:13px;color:var(--t3)}

.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}

.related-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  backdrop-filter:blur(14px);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.related-card:hover{transform:translateY(-2px);border-color:rgba(47,227,196,.45);box-shadow:var(--shadow-card)}
.related-card img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:transform .3s var(--ease);
}
.related-card:hover img{transform:scale(1.03)}
.related-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.related-body h3{
  font-size:1.0625rem;font-weight:600;color:var(--t1);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--t3);margin-top:auto}
.related-meta .divider{width:1px;height:12px;background:rgba(255,255,255,.14)}

/* ---------- empty state ---------- */
.empty-state{
  max-width:520px;margin:16px auto 0;
  padding:36px 28px;
  text-align:center;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid rgba(47,227,196,.45);
  color:var(--neon);
  background:rgba(47,227,196,.08);
}
.empty-state h2{font-size:1.25rem;font-weight:600;color:var(--t1);margin-bottom:10px}
.empty-state p{font-size:14px;color:var(--t2);line-height:1.8;margin-bottom:20px}

/* ---------- cta band ---------- */
.cta-band{
  margin-top:64px;
  padding:36px 26px;
  position:relative;
  overflow:hidden;
  text-align:center;
}
@media (min-width:768px){.cta-band{padding:48px}}
.cta-band::after{
  content:"";position:absolute;left:-20%;right:-20%;top:-60%;height:180px;
  background:radial-gradient(closest-side,rgba(47,227,196,.22),transparent);
  opacity:.8;pointer-events:none;
}
.cta-band h2{
  position:relative;z-index:1;
  font-size:clamp(1.35rem,2.6vw,1.9rem);font-weight:700;color:var(--t1);margin-bottom:12px;
}
.cta-band p{position:relative;z-index:1;font-size:14.5px;color:var(--t2);margin-bottom:26px}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;
  background:#04060C;
  border-top:1px solid var(--line);
  padding:56px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-desc{font-size:13.5px;color:var(--t2);line-height:1.85;margin-top:16px;max-width:32em}
.footer-title{
  font-size:12px;color:var(--t3);letter-spacing:.16em;text-transform:uppercase;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:var(--t2);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--neon);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:42px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--t3);
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .article-body{animation:none}
}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--ink-1)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#2FE3C4,#7C6CFF);border-radius:999px;border:2px solid var(--ink-1)}

/* roulang page: category1 */
:root{
  --ink-0:#06080F;
  --ink-1:#0B1020;
  --ink-2:#141B33;
  --neon:#2FE3C4;
  --violet:#7C6CFF;
  --amber:#FFB460;
  --t1:#EDF2FF;
  --t2:#A3AEC9;
  --t3:#6B7699;
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(20,27,51,.55);
  --radius-card:18px;
  --radius-soft:12px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.85);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--t2);
  font-family:'HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before,
body::after{
  content:"";
  position:fixed;
  width:520px;height:520px;
  border-radius:50%;
  filter:blur(120px);
  z-index:0;
  pointer-events:none;
}
body::before{background:rgba(47,227,196,.14);top:-160px;left:-140px;animation:breathe 6s ease-in-out infinite;}
body::after{background:rgba(124,108,255,.13);bottom:-200px;right:-160px;animation:breathe 6s ease-in-out infinite 3s;}
@keyframes breathe{
  0%,100%{opacity:.55;transform:scale(1);}
  50%{opacity:.95;transform:scale(1.08);}
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ease),opacity var(--ease);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;line-height:1.3;}
p{margin:0;}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,227,196,.3);color:#fff;}

::-webkit-scrollbar{width:9px;height:9px;}
::-webkit-scrollbar-track{background:var(--ink-2);}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--neon),var(--violet));border-radius:999px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:2;
}
@media(min-width:1280px){
  .container{max-width:1280px;padding:0 32px;}
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  height:68px;
  display:flex;
  align-items:center;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,8,15,.88);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.9);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:34px;height:34px;
  border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  color:#04121A;
  font-weight:800;
  font-size:17px;
  font-family:ui-monospace,'DIN Alternate',monospace;
  box-shadow:0 0 20px -6px rgba(47,227,196,.7);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{color:var(--t1);font-size:15px;font-weight:700;letter-spacing:.01em;}
.logo-sub{color:var(--t3);font-size:11px;letter-spacing:.14em;}
.desktop-nav{
  display:none;
  align-items:center;
  gap:32px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:14.5px;
  color:var(--t2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--ease);
  box-shadow:0 0 8px rgba(47,227,196,.75);
}
.nav-link:hover{color:var(--t1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--t1);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-soft);
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--t2);
  cursor:pointer;
  transition:all var(--ease);
}
.icon-btn:hover{
  color:var(--neon);
  border-color:rgba(47,227,196,.5);
  background:rgba(255,255,255,.06);
  transform:translateY(-1px);
}
.hamburger{display:inline-flex;}
@media(min-width:1024px){
  .desktop-nav{display:flex;}
  .hamburger{display:none;}
}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:120;
  background:rgba(6,8,15,.97);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:88px 20px 120px;
  transform:translateX(100%);
  transition:transform 280ms cubic-bezier(.2,.7,.3,1);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer .drawer-top{
  position:absolute;
  top:0;left:0;right:0;
  height:68px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;
  border-bottom:1px solid var(--line);
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:56px;
  font-size:15px;
  color:var(--t2);
  border-bottom:1px solid var(--line);
}
.drawer-link:hover,.drawer-link.active{color:var(--neon);}
.drawer-cta{
  position:fixed;
  left:20px;right:20px;bottom:24px;
  z-index:130;
}
.mobile-drawer:not(.is-open) .drawer-cta{display:none;}

/* ============ 按钮 / 标签 ============ */
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:50px;
  padding:0 28px;
  border-radius:999px;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  color:#04121A;
  font-weight:700;
  font-size:15px;
  border:none;
  cursor:pointer;
  box-shadow:0 0 24px -4px rgba(47,227,196,.55);
  transition:all var(--ease);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 34px -2px rgba(47,227,196,.7);
}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:50px;
  padding:0 26px;
  border-radius:var(--radius-soft);
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--t1);
  font-size:15px;
  cursor:pointer;
  transition:all var(--ease);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(47,227,196,.4);transform:translateY(-1px);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--t2);
  font-size:14.5px;
  padding:10px 0;
}
.link-arrow span.arw{transition:transform var(--ease);display:inline-block;}
.link-arrow:hover{color:var(--neon);}
.link-arrow:hover span.arw{transform:translateX(3px);}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  border:1px solid;
}
.badge-violet{color:#BDB5FF;border-color:rgba(124,108,255,.42);background:rgba(124,108,255,.12);}
.badge-neon{color:#8FF3E2;border-color:rgba(47,227,196,.42);background:rgba(47,227,196,.1);}
.badge-amber{color:var(--amber);border-color:rgba(255,180,96,.4);background:rgba(255,180,96,.1);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:18px;
}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb .current{color:var(--t1);}

/* ============ 页面头部 ============ */
.page-hero{
  padding:56px 0 24px;
  position:relative;
}
.hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:center;
}
@media(min-width:1024px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:48px;}
}
.hero-tag{margin-bottom:18px;}
.page-hero h1{
  font-size:clamp(1.75rem,4.6vw,3.05rem);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero-lead{
  font-size:1.0625rem;
  line-height:1.85;
  color:var(--t2);
  max-width:44em;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-visual{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--ink-2);
  box-shadow:var(--shadow-card);
}
.hero-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,8,15,.05),rgba(6,8,15,.55));
  pointer-events:none;
}
.hero-visual .visual-caption{
  position:absolute;
  left:18px;right:18px;bottom:16px;
  z-index:2;
  font-size:13px;
  color:var(--t1);
  display:flex;
  justify-content:space-between;
  gap:12px;
  align-items:center;
}
.visual-caption .cap-num{
  font-family:ui-monospace,'DIN Alternate',monospace;
  font-variant-numeric:tabular-nums;
  color:var(--neon);
}

/* 数据条 */
.stat-bar{
  margin-top:44px;
  display:grid;
  grid-template-columns:1fr;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
@media(min-width:768px){
  .stat-bar{grid-template-columns:repeat(3,1fr);}
}
.stat-cell{
  padding:22px 4px;
  border-bottom:1px solid var(--line);
}
.stat-bar .stat-cell:last-child{border-bottom:none;}
@media(min-width:768px){
  .stat-cell{
    border-bottom:none;
    border-right:1px solid var(--line);
    padding:26px 24px;
  }
  .stat-bar .stat-cell:first-child{padding-left:0;}
  .stat-bar .stat-cell:last-child{border-right:none;padding-right:0;}
}
.stat-num{
  font-family:ui-monospace,'DIN Alternate',monospace;
  font-variant-numeric:tabular-nums;
  font-size:1.85rem;
  font-weight:800;
  color:var(--t1);
  line-height:1.2;
}
.stat-num em{color:var(--neon);font-style:normal;font-size:1rem;margin-left:4px;}
.stat-label{font-size:13px;color:var(--t3);margin-top:6px;}

/* ============ 主内容：目录 + 步骤 ============ */
.section{padding:64px 0;}
@media(min-width:1024px){
  .section{padding:96px 0;}
}
.section-head{margin-bottom:34px;max-width:56em;}
.section-head h2{
  font-size:clamp(1.35rem,2.6vw,2.05rem);
  margin-bottom:12px;
}
.section-head p{color:var(--t2);font-size:15px;}

.layout-main{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media(min-width:1024px){
  .layout-main{grid-template-columns:3fr 9fr;gap:44px;align-items:start;}
}

.toc{
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  padding:24px;
}
@media(min-width:1024px){
  .toc{position:sticky;top:96px;}
}
.toc-title{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--t3);
  text-transform:uppercase;
  margin-bottom:16px;
}
.toc-nav{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 10px;
  border-radius:10px;
  font-size:14px;
  color:var(--t2);
  min-height:44px;
  transition:all var(--ease);
}
.toc-link .dot{
  width:6px;height:6px;
  border-radius:50%;
  background:rgba(255,255,255,.22);
  flex-shrink:0;
  transition:all var(--ease);
}
.toc-link:hover{background:rgba(255,255,255,.05);color:var(--t1);}
.toc-link.is-active{
  color:var(--neon);
  background:rgba(47,227,196,.08);
}
.toc-link.is-active .dot{
  background:var(--neon);
  box-shadow:0 0 10px rgba(47,227,196,.9);
}
.toc-foot{
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t3);
  line-height:1.8;
}

.step-list{list-style:none;margin:0;padding:0;}
.step-item{
  position:relative;
  padding-left:72px;
  padding-bottom:46px;
}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";
  position:absolute;
  left:23px;
  top:52px;
  bottom:2px;
  width:1px;
  background:var(--line);
}
.step-item:last-child::before{display:none;}
.step-num{
  position:absolute;
  left:0;top:0;
  width:48px;height:48px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  font-family:ui-monospace,'DIN Alternate',monospace;
  font-variant-numeric:tabular-nums;
  font-size:15px;
  font-weight:700;
  color:var(--neon);
  background:rgba(47,227,196,.08);
  border:1px solid rgba(47,227,196,.28);
  box-shadow:0 0 18px -8px rgba(47,227,196,.9);
}
.step-body{
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  padding:26px;
  transition:all var(--ease);
}
.step-body:hover{
  transform:translateY(-2px);
  border-color:rgba(47,227,196,.42);
}
.step-body h3{
  font-size:1.2rem;
  margin-bottom:12px;
}
.step-body p{font-size:15px;color:var(--t2);margin-bottom:10px;}
.step-body p:last-of-type{margin-bottom:0;}
.step-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:16px;
}
.step-shot{
  margin:20px 0 0;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--ink-2);
}
.step-shot img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform 300ms cubic-bezier(.2,.7,.3,1);
}
.step-shot:hover img{transform:scale(1.03);}
.step-shot figcaption{
  font-size:12px;
  color:var(--t3);
  padding:10px 14px;
  border-top:1px solid var(--line);
}
@media(max-width:640px){
  .step-item{padding-left:60px;padding-bottom:36px;}
  .step-item::before{left:19px;top:44px;}
  .step-num{width:40px;height:40px;border-radius:12px;font-size:13px;}
  .step-body{padding:20px;}
}

/* ============ 适用场景 ============ */
.scene-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
@media(min-width:768px){
  .scene-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .scene-card:nth-child(2){transform:translateY(28px);}
}
.scene-card{
  border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(20,27,51,.75),rgba(11,16,32,.9));
  border:1px solid var(--line);
  padding:28px;
  box-shadow:var(--shadow-card);
  transition:all var(--ease);
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(124,108,255,.45);
}
.scene-icon{
  width:44px;height:44px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(124,108,255,.16);
  border:1px solid rgba(124,108,255,.32);
  color:#BDB5FF;
  margin-bottom:18px;
}
.scene-card h3{font-size:1.125rem;margin-bottom:12px;}
.scene-card p{font-size:14.5px;color:var(--t2);}
.scene-list{
  list-style:none;
  margin:16px 0 0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.scene-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--t2);
}
.scene-list li::before{
  content:"";
  position:absolute;
  left:0;top:.68em;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--neon);
  box-shadow:0 0 8px rgba(47,227,196,.8);
}

/* ============ 自检清单 ============ */
.check-panel{
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  padding:28px;
}
@media(min-width:1024px){
  .check-panel{padding:40px;}
}
.check-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
  margin-top:24px;
}
@media(min-width:768px){
  .check-grid{grid-template-columns:repeat(2,1fr);gap:16px 28px;}
}
.check-item{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:14px 16px;
  border-radius:var(--radius-soft);
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
  font-size:14.5px;
  color:var(--t2);
  transition:all var(--ease);
}
.check-item:hover{border-color:rgba(47,227,196,.4);background:rgba(47,227,196,.05);}
.check-mark{
  flex-shrink:0;
  width:20px;height:20px;
  border-radius:6px;
  margin-top:2px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,227,196,.14);
  border:1px solid rgba(47,227,196,.45);
  color:var(--neon);
  font-size:12px;
  line-height:1;
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  padding:36px 28px;
  text-align:center;
}
@media(min-width:1024px){
  .cta-band{padding:44px 48px;}
}
.cta-band::before{
  content:"";
  position:absolute;
  left:50%;top:-140px;
  width:520px;height:280px;
  transform:translateX(-50%);
  background:radial-gradient(ellipse at center,rgba(47,227,196,.22),rgba(124,108,255,.14) 45%,transparent 72%);
  opacity:.65;
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(1.25rem,2.4vw,1.8rem);
  margin-bottom:12px;
  position:relative;
}
.cta-band p{
  max-width:46em;
  margin:0 auto;
  font-size:15px;
  position:relative;
}
.cta-actions{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  justify-content:center;
  align-items:center;
  margin-top:26px;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:64px;
  background:#04060C;
  border-top:1px solid var(--line);
  padding:56px 0 24px;
  position:relative;
  z-index:2;
}
@media(min-width:1024px){
  .site-footer{margin-top:96px;padding:72px 0 28px;}
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media(min-width:768px){
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;}
}
@media(min-width:1024px){
  .footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:44px;}
}
.footer-desc{
  font-size:13.5px;
  color:var(--t3);
  line-height:1.85;
  margin-top:16px;
  max-width:32em;
}
.footer-title{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--t3);
  text-transform:uppercase;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;
  color:var(--t2);
  width:fit-content;
}
.footer-links a:hover{color:var(--neon);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--t3);
}

/* ============ 入场动效 ============ */
.fade-up{
  opacity:0;
  transform:translateY(12px);
  animation:fadeUp 620ms cubic-bezier(.2,.7,.3,1) forwards;
}
.fade-up.d1{animation-delay:.08s;}
.fade-up.d2{animation-delay:.16s;}
.fade-up.d3{animation-delay:.24s;}
@keyframes fadeUp{
  to{opacity:1;transform:translateY(0);}
}

@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .fade-up{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink-0:#06080F;
  --ink-1:#0B1020;
  --ink-2:#141B33;
  --neon:#2FE3C4;
  --violet:#7C6CFF;
  --amber:#FFB460;
  --t1:#EDF2FF;
  --t2:#A3AEC9;
  --t3:#6B7699;
  --line:rgba(255,255,255,0.07);
  --line-strong:rgba(255,255,255,0.16);
  --glass:rgba(20,27,51,0.55);
  --r-card:18px;
  --r-soft:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--t2);
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:1024px){
  .container{padding:0 32px}
}
h1{font-size:clamp(1.75rem,4.6vw,3.25rem);line-height:1.2;letter-spacing:-0.01em;font-weight:800;color:var(--t1)}
h2{font-size:clamp(1.35rem,2.6vw,2.1rem);line-height:1.3;font-weight:700;color:var(--t1)}
h3{font-size:1.125rem;line-height:1.5;font-weight:600;color:var(--t1)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,"DIN Alternate",monospace;font-variant-numeric:tabular-nums}
.eyebrow{font-size:0.8125rem;letter-spacing:.18em;color:var(--t3);text-transform:uppercase}
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-head{margin-bottom:28px}
@media (min-width:1024px){.section-head{margin-bottom:40px}}
.section-head p{color:var(--t3);font-size:0.8125rem;margin-top:8px}

/* 光斑背景 */
.aura{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.aura span{position:absolute;width:520px;height:520px;border-radius:50%;filter:blur(120px);opacity:.16}
.aura span:nth-child(1){background:var(--neon);top:-160px;left:-120px;animation:breathe 6s ease-in-out infinite}
.aura span:nth-child(2){background:var(--violet);bottom:-200px;right:-140px;animation:breathe 6s ease-in-out infinite reverse}
@keyframes breathe{0%,100%{opacity:.12}50%{opacity:.2}}

/* 玻璃 */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:var(--r-card);
}

/* 头部 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background 180ms var(--ease);
}
.site-header.scrolled{background:rgba(6,8,15,0.88)}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  font-weight:800;font-size:17px;color:#06080F;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  box-shadow:0 0 24px -6px rgba(47,227,196,.6);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:15px;font-weight:700;color:var(--t1);letter-spacing:.02em}
.logo-sub{font-size:11px;color:var(--t3);letter-spacing:.14em}
.desktop-nav{display:flex;gap:32px}
.nav-link{
  position:relative;
  font-size:14px;
  color:var(--t2);
  padding:6px 0;
  transition:color 180ms var(--ease);
}
.nav-link:hover{color:var(--t1)}
.nav-link.active{color:var(--t1)}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-6px;
  height:2px;background:var(--neon);
  box-shadow:0 0 12px rgba(47,227,196,.85);
}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);
  border-radius:var(--r-soft);
  color:var(--t2);
  background:transparent;
  cursor:pointer;
  transition:background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.06);color:var(--t1);border-color:rgba(47,227,196,.45)}
.icon-btn:focus-visible,.nav-link:focus-visible,.logo:focus-visible{
  outline:2px solid var(--neon);outline-offset:2px;border-radius:6px;
}
.hamburger{display:none}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:70;
  background:rgba(6,8,15,.97);
  backdrop-filter:blur(16px);
  display:flex;flex-direction:column;
  padding:96px 24px 32px;
  transform:translateY(-100%);
  visibility:hidden;
  transition:transform 260ms var(--ease),visibility 260ms var(--ease);
}
.mobile-drawer.open{transform:translateY(0);visibility:visible}
.mobile-drawer a{
  height:56px;display:flex;align-items:center;
  border-bottom:1px solid var(--line);
  color:var(--t1);font-size:16px;
}
.mobile-drawer a.active{color:var(--neon)}
.mobile-drawer .drawer-cta{
  margin-top:auto;height:52px;justify-content:center;
  border:0;border-radius:999px;font-weight:600;color:#06080F;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  box-shadow:0 0 24px -4px rgba(47,227,196,.55);
}
body.drawer-open{overflow:hidden}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease);
}
.btn-primary{
  color:#06080F;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  box-shadow:0 0 24px -4px rgba(47,227,196,.55);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 34px -2px rgba(47,227,196,.7);filter:brightness(1.06)}
.btn-ghost{
  color:var(--t1);
  border:1px solid var(--line-strong);
  background:transparent;
}
.btn-ghost:hover{background:rgba(255,255,255,.06);transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--neon);outline-offset:3px}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--t2);font-size:14px;
  transition:color 180ms var(--ease);
}
.text-link svg{transition:transform 180ms var(--ease)}
.text-link:hover{color:var(--neon)}
.text-link:hover svg{transform:translateX(3px)}

/* Badge */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;line-height:1.4;
  border:1px solid transparent;
}
.badge-violet{color:#B9B1FF;background:rgba(124,108,255,.12);border-color:rgba(124,108,255,.35)}
.badge-amber{color:var(--amber);background:rgba(255,180,96,.1);border-color:rgba(255,180,96,.35)}
.badge-neon{color:var(--neon);background:rgba(47,227,196,.1);border-color:rgba(47,227,196,.32)}

/* 横幅 */
.page-banner{
  position:relative;
  min-height:300px;
  display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,8,15,.62),rgba(6,8,15,.94));
}
.banner-inner{position:relative;z-index:2;padding:72px 0;max-width:760px}
.banner-inner h1{margin-bottom:14px}
.banner-inner p{font-size:1rem;color:var(--t2);max-width:640px}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
@media (max-width:768px){
  .page-banner{min-height:280px}
  .banner-inner{padding:56px 0}
}

/* 面包屑 */
.crumb{font-size:13px;color:var(--t3);margin-bottom:16px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.crumb a:hover{color:var(--neon)}
.crumb .current{color:var(--t1)}

/* 进度条组 */
.progress-stack{display:flex;flex-direction:column;gap:18px}
.progress-item{display:grid;grid-template-columns:1fr auto;gap:8px 16px;align-items:center}
.progress-label{font-size:13px;color:var(--t2)}
.progress-value{font-size:13px;color:var(--t1)}
.track{
  grid-column:1 / -1;
  height:8px;border-radius:999px;background:rgba(255,255,255,.08);
  overflow:hidden;position:relative;
}
.track i{
  display:block;height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
  position:relative;overflow:hidden;
}
.track i::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
  animation:sweep 2.4s linear infinite;
}
@keyframes sweep{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}

/* 数据点 */
.stats-row{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stats-row > div{
  padding:22px 20px;
  border-right:1px solid var(--line);
}
.stats-row > div:last-child{border-right:0}
.stats-row .num{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:700;color:var(--t1)}
.stats-row .cap{font-size:12px;color:var(--t3);margin-top:4px}
@media (max-width:640px){
  .stats-row{grid-template-columns:1fr}
  .stats-row > div{border-right:0;border-bottom:1px solid var(--line)}
  .stats-row > div:last-child{border-bottom:0}
}

/* 横向轨道 */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 4px 18px;
  scrollbar-width:thin;
}
.rail-item{
  flex:0 0 322px;
  scroll-snap-align:start;
  border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.08);
  overflow:hidden;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.rail-item:hover{transform:translateY(-2px);border-color:rgba(47,227,196,.45);box-shadow:0 24px 48px -28px rgba(0,0,0,.85)}
.rail-item .thumb{aspect-ratio:16/9;overflow:hidden;position:relative}
.rail-item .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease)}
.rail-item:hover .thumb img{transform:scale(1.03)}
.rail-item .thumb::after{
  content:"";position:absolute;inset:0;border-radius:0;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);
}
.rail-body{padding:20px 22px 24px}
.rail-body h3{font-size:1.0625rem;margin:12px 0 8px;line-height:1.5}
.rail-body p{font-size:14px;color:var(--t2)}
.rail-meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12px;color:var(--t3);
}
@media (max-width:640px){
  .rail-item{flex:0 0 78%}
}

/* 奖励预览行 */
.reward-table{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:rgba(20,27,51,.4)}
.reward-row{
  display:grid;
  grid-template-columns:64px minmax(0,1fr) 150px 130px;
  gap:16px;align-items:center;
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  background:var(--glass);
  transition:background 180ms var(--ease);
}
.reward-row:last-child{border-bottom:0}
.reward-row:hover{background:rgba(20,27,51,.78)}
.reward-index{font-size:13px;color:var(--t3)}
.reward-name{font-size:15px;color:var(--t1);font-weight:600}
.reward-name small{display:block;font-size:13px;font-weight:400;color:var(--t2);margin-top:4px;line-height:1.7}
.reward-cycle{font-size:13px;color:var(--t2)}
.reward-state{justify-self:end}
@media (max-width:768px){
  .reward-row{grid-template-columns:44px minmax(0,1fr);gap:10px 14px}
  .reward-cycle{grid-column:2;font-size:12px;color:var(--t3)}
  .reward-state{grid-column:2;justify-self:start;margin-top:6px}
}

/* 图文错位 */
.split{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  align-items:center;
}
@media (min-width:1024px){
  .split{grid-template-columns:1fr 1fr;gap:48px}
  .split.reverse .split-media{order:2}
}
.split-media img{border-radius:14px;aspect-ratio:4/3;object-fit:cover;width:100%}
.split-num{
  font-size:13px;letter-spacing:.2em;color:var(--neon);
  display:flex;align-items:center;gap:12px;margin-bottom:14px;
}
.split-num::before{content:"";width:2px;height:18px;background:var(--neon);box-shadow:0 0 10px rgba(47,227,196,.8)}
.split h3{font-size:1.375rem;margin-bottom:12px}
.split p{color:var(--t2);margin-bottom:10px}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.08);
  overflow:hidden;
  transition:border-color 180ms var(--ease);
}
.faq-item.open{border-color:rgba(47,227,196,.4)}
.faq-item h3{margin:0}
.faq-q{
  width:100%;
  min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:0 24px;
  background:transparent;border:0;cursor:pointer;
  text-align:left;font-size:15px;font-weight:600;color:var(--t1);
}
.faq-q:focus-visible{outline:2px solid var(--neon);outline-offset:-2px}
.faq-plus{
  flex-shrink:0;width:22px;height:22px;position:relative;
  transition:transform 220ms var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--neon);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-plus::before{width:14px;height:2px}
.faq-plus::after{width:2px;height:14px}
.faq-item.open .faq-plus{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms var(--ease);
}
.faq-a p{padding:0 24px 22px;font-size:14px;color:var(--t2);line-height:1.8}

/* CTA */
.cta-band{position:relative;overflow:hidden;padding:36px 32px;text-align:center}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(400px 180px at 50% 0%,rgba(47,227,196,.18),transparent 70%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(1.25rem,2.4vw,1.75rem);margin-bottom:10px;position:relative;z-index:1}
.cta-band p{color:var(--t2);position:relative;z-index:1;margin-bottom:24px}
.cta-band .cta-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;position:relative;z-index:1}

/* 页脚 */
.site-footer{
  background:#04060C;
  border-top:1px solid var(--line);
  padding:56px 0 24px;
  margin-top:40px;
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-title{font-size:13px;letter-spacing:.14em;color:var(--t3);text-transform:uppercase;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--t2);transition:color 180ms var(--ease)}
.footer-links a:hover{color:var(--neon);text-decoration:underline;text-underline-offset:4px}
.footer-desc{font-size:13px;color:var(--t3);line-height:1.9;margin-top:16px;max-width:340px}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:var(--t3);
}
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--ink-2)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--neon),var(--violet));border-radius:999px}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 500ms var(--ease),transform 500ms var(--ease)}
.reveal.in{opacity:1;transform:none}

@media (max-width:768px){
  .desktop-nav{display:none}
  .hamburger{display:grid}
  .header-actions .icon-btn:not(.hamburger){display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink-0:#06080F;
  --ink-1:#0B1020;
  --ink-2:#141B33;
  --neon:#2FE3C4;
  --violet:#7C6CFF;
  --amber:#FFB460;
  --t1:#EDF2FF;
  --t2:#A3AEC9;
  --t3:#6B7699;
  --line:rgba(255,255,255,0.07);
  --line-strong:rgba(255,255,255,0.16);
  --glass:rgba(20,27,51,0.55);
  --radius-card:18px;
  --radius-soft:12px;
  --radius-pill:999px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,0.85);
  --shadow-glow:0 0 24px -4px rgba(47,227,196,0.55);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  padding:0;
  background:var(--ink-0);
  color:var(--t2);
  font-family:var(--font-cn);
  font-size:1rem;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font-family:inherit;font-size:inherit;color:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px}

::selection{background:rgba(47,227,196,0.28);color:var(--t1)}

::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-track{background:var(--ink-2)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--neon),var(--violet));border-radius:999px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

/* ---------- 氛围光斑 ---------- */
.aurora{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  overflow:hidden;
}
.aurora span{
  position:absolute;
  width:520px;
  height:520px;
  border-radius:50%;
  filter:blur(120px);
  opacity:.15;
  animation:breathe 6s ease-in-out infinite;
}
.aurora span:nth-child(1){background:var(--neon);top:-160px;left:-140px}
.aurora span:nth-child(2){background:var(--violet);bottom:-180px;right:-160px;animation-delay:2.4s}

@keyframes breathe{
  0%,100%{transform:scale(1);opacity:.12}
  50%{transform:scale(1.12);opacity:.18}
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:68px;
  display:flex;
  align-items:center;
  background:rgba(6,8,15,0.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background-color var(--ease),box-shadow var(--ease);
}
.site-header.scrolled{
  background:rgba(6,8,15,0.88);
  box-shadow:0 12px 32px -24px rgba(0,0,0,0.9);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  width:100%;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:34px;
  height:34px;
  border-radius:10px;
  display:grid;
  place-items:center;
  font-family:var(--font-num);
  font-weight:700;
  font-size:17px;
  color:#08131A;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  box-shadow:var(--shadow-glow);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--t1);
}
.logo-sub{
  font-size:11px;
  letter-spacing:.16em;
  color:var(--t3);
}
.desktop-nav{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:14.5px;
  color:var(--t2);
  padding:6px 0;
}
.nav-link:hover{color:var(--t1)}
.nav-link.active{color:var(--t1)}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-6px;
  height:2px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 6px rgba(47,227,196,0.9);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:8px;
}
.icon-btn{
  width:44px;
  height:44px;
  display:grid;
  place-items:center;
  border-radius:var(--radius-soft);
  border:1px solid var(--line-strong);
  color:var(--t2);
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.icon-btn:hover{
  color:var(--neon);
  border-color:rgba(47,227,196,0.5);
  background:rgba(47,227,196,0.06);
}
.hamburger{display:none}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;
  inset:68px 0 0 0;
  z-index:55;
  background:rgba(6,8,15,0.97);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:8px 20px 24px;
  display:none;
  flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.open{display:flex}
.drawer-link{
  display:flex;
  align-items:center;
  height:56px;
  font-size:16px;
  color:var(--t2);
  border-bottom:1px solid var(--line);
}
.drawer-link.active{color:var(--neon)}
.drawer-cta{margin-top:auto;padding-top:24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 28px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  color:#06131A;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 0 34px -2px rgba(47,227,196,0.6);
  filter:brightness(1.08);
}
.btn-secondary{
  color:var(--t1);
  border:1px solid var(--line-strong);
  background:transparent;
}
.btn-secondary:hover{
  background:rgba(255,255,255,0.06);
  transform:translateY(-1px);
}
.btn-soft{
  color:var(--neon);
  border:1px solid rgba(47,227,196,0.35);
  background:rgba(47,227,196,0.06);
}
.btn-soft:hover{background:rgba(47,227,196,0.12)}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--t2);
  font-size:14.5px;
}
.link-arrow span.arrow{transition:transform var(--ease);display:inline-block}
.link-arrow:hover{color:var(--neon)}
.link-arrow:hover span.arrow{transform:translateX(3px)}

/* ---------- 首屏横幅 ---------- */
.page-banner{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--ink-1);
}
.banner-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.34;
  filter:saturate(.9);
}
.page-banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,8,15,.72),rgba(6,8,15,.94));
}
.banner-inner{
  position:relative;
  z-index:2;
  padding-top:56px;
  padding-bottom:56px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:16px;
}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .current{color:var(--t1)}
.page-banner h1{
  font-size:clamp(1.75rem,4.6vw,3.25rem);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--t1);
  max-width:22em;
}
.banner-sub{
  margin-top:16px;
  font-size:clamp(.95rem,1.4vw,1.0625rem);
  color:var(--t2);
  max-width:40em;
}
.banner-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);
  font-size:12.5px;
  color:var(--t2);
  background:rgba(20,27,51,0.45);
}
.tag .dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--neon);
  box-shadow:0 0 8px rgba(47,227,196,0.9);
}
.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  letter-spacing:.02em;
  border:1px solid rgba(124,108,255,0.4);
  background:rgba(124,108,255,0.12);
  color:#C9C3FF;
}
.badge-amber{
  border-color:rgba(255,180,96,0.4);
  background:rgba(255,180,96,0.12);
  color:#FFD3A4;
}
.badge-neon{
  border-color:rgba(47,227,196,0.4);
  background:rgba(47,227,196,0.1);
  color:#9DF2E2;
}

/* ---------- 通用板块 ---------- */
.section{
  position:relative;
  z-index:1;
  padding:88px 0;
}
.section-tight{padding:64px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
}
.section-title{
  font-size:clamp(1.35rem,2.6vw,2.1rem);
  font-weight:700;
  line-height:1.3;
  color:var(--t1);
}
.section-note{
  margin-top:10px;
  font-size:13px;
  color:var(--t3);
}
.divider{
  height:1px;
  background:var(--line);
  border:0;
  margin:0;
}

/* ---------- FAQ 布局 ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:28px;
  align-items:start;
}
.faq-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.faq-item:hover{
  border-color:rgba(47,227,196,0.35);
  transform:translateY(-2px);
}
.faq-item.open{
  border-color:rgba(47,227,196,0.45);
  box-shadow:var(--shadow-card);
}
.faq-head{margin:0;font-size:1rem}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:0 24px;
  min-height:60px;
  text-align:left;
}
.faq-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:12.5px;
  color:var(--t3);
  width:26px;
  flex-shrink:0;
}
.faq-title{
  flex:1;
  font-size:1.0625rem;
  font-weight:600;
  line-height:1.6;
  color:var(--t1);
}
.faq-icon{
  position:relative;
  width:16px;
  height:16px;
  flex-shrink:0;
  transition:transform var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--neon);
  border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 260ms cubic-bezier(.2,.7,.3,1);
}
.faq-a p{
  padding:0 24px 22px 66px;
  font-size:.98rem;
  line-height:1.85;
  color:var(--t2);
}
.faq-a p + p{margin-top:10px}
.faq-a strong{color:var(--t1);font-weight:600}

/* ---------- 侧栏 ---------- */
.side-col{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.info-card{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  padding:26px;
}
.info-card h2{
  font-size:1.0625rem;
  font-weight:600;
  color:var(--t1);
  margin-bottom:18px;
}
.quick-list{display:flex;flex-direction:column}
.quick-list a{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:52px;
  padding:0 4px;
  font-size:14.5px;
  color:var(--t2);
  border-bottom:1px solid var(--line);
}
.quick-list a:last-child{border-bottom:0}
.quick-list a:hover{color:var(--neon)}
.quick-list a::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--t3);
  flex-shrink:0;
  transition:background-color var(--ease),box-shadow var(--ease);
}
.quick-list a:hover::before,
.quick-list a.is-current::before{
  background:var(--neon);
  box-shadow:0 0 8px rgba(47,227,196,0.9);
}
.quick-list a.is-current{color:var(--t1)}
.quick-list a .go{
  margin-left:auto;
  font-family:var(--font-num);
  font-size:12px;
  color:var(--t3);
}
.contact-row{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:14px 0;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--t2);
}
.contact-row:first-of-type{border-top:0;padding-top:0}
.contact-row .k{
  flex-shrink:0;
  width:78px;
  color:var(--t3);
  font-size:12.5px;
}
.info-card .btn{width:100%;margin-top:18px}

/* ---------- 反馈路径 ---------- */
.steps-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:8px;
}
.step-card{
  position:relative;
  padding:26px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:rgba(20,27,51,0.42);
  transition:border-color var(--ease),transform var(--ease);
}
.step-card:hover{
  border-color:rgba(47,227,196,0.4);
  transform:translateY(-2px);
}
.step-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:1.75rem;
  font-weight:700;
  letter-spacing:.02em;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.step-card h3{
  margin-top:14px;
  font-size:1.125rem;
  font-weight:600;
  color:var(--t1);
}
.step-card p{
  margin-top:10px;
  font-size:.9375rem;
  line-height:1.8;
  color:var(--t2);
}
.step-line{
  position:absolute;
  left:26px;
  right:26px;
  top:0;
  height:2px;
  background:linear-gradient(90deg,rgba(47,227,196,0.7),rgba(124,108,255,0));
}

/* ---------- 相关入口卡 ---------- */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.entry-card{
  display:flex;
  flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:rgba(20,27,51,0.45);
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.entry-card:hover{
  transform:translateY(-2px);
  border-color:rgba(47,227,196,0.45);
  box-shadow:var(--shadow-card);
}
.entry-media{
  position:relative;
  aspect-ratio:16 / 9;
  overflow:hidden;
  background:var(--ink-2);
}
.entry-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 320ms cubic-bezier(.2,.7,.3,1);
}
.entry-card:hover .entry-media img{transform:scale(1.03)}
.entry-media::after{
  content:"";
  position:absolute;
  inset:0;
  border:1px solid rgba(255,255,255,0.06);
  border-radius:0;
  pointer-events:none;
}
.entry-body{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:24px;
  flex:1;
}
.entry-body h3{
  font-size:1.125rem;
  font-weight:600;
  color:var(--t1);
  line-height:1.5;
}
.entry-body p{
  font-size:.9375rem;
  line-height:1.8;
  color:var(--t2);
}
.entry-foot{
  margin-top:auto;
  padding-top:8px;
  font-size:12.5px;
  color:var(--t3);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

/* ---------- 数据点 ---------- */
.stat-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.stat-item{
  padding:8px 28px;
  border-left:1px solid var(--line);
}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-value{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.6rem,3vw,2.25rem);
  font-weight:700;
  color:var(--t1);
  letter-spacing:-.01em;
}
.stat-value em{
  font-style:normal;
  font-size:.5em;
  color:var(--neon);
  margin-left:6px;
}
.stat-label{
  margin-top:6px;
  font-size:13px;
  color:var(--t3);
}

/* ---------- CTA 横条 ---------- */
.cta-bar{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  padding:40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-bar::before{
  content:"";
  position:absolute;
  inset:-40% -10% auto -10%;
  height:70%;
  background:linear-gradient(120deg,rgba(47,227,196,0.18),rgba(124,108,255,0.14) 55%,rgba(47,227,196,0));
  filter:blur(48px);
  opacity:.9;
  pointer-events:none;
}
.cta-bar > *{position:relative;z-index:1}
.cta-bar h2{
  font-size:clamp(1.25rem,2.2vw,1.6rem);
  font-weight:700;
  color:var(--t1);
  line-height:1.35;
}
.cta-bar p{
  margin-top:10px;
  font-size:.9375rem;
  color:var(--t2);
}
.cta-actions{
  display:flex;
  align-items:center;
  gap:16px;
  flex-shrink:0;
}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:24px;
  padding-top:64px;
  background:#04060C;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-desc{
  margin-top:18px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--t3);
  max-width:30em;
}
.footer-title{
  font-size:12.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--t3);
  margin-bottom:18px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.footer-links a{
  font-size:14px;
  color:var(--t2);
  width:fit-content;
  border-bottom:1px solid transparent;
}
.footer-links a:hover{
  color:var(--neon);
  border-bottom-color:rgba(47,227,196,0.6);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 0;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--t3);
}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 520ms cubic-bezier(.2,.7,.3,1),transform 520ms cubic-bezier(.2,.7,.3,1);
}
.reveal.is-visible{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .faq-layout{grid-template-columns:1fr}
  .side-col{position:static;order:-1}
  .steps-grid{grid-template-columns:1fr 1fr}
  .entry-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:768px){
  .desktop-nav{display:none}
  .hamburger{display:grid}
  .header-actions{margin-left:auto}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .banner-inner{padding-top:40px;padding-bottom:44px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .steps-grid{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr}
  .stat-item{
    border-left:0;
    border-top:1px solid var(--line);
    padding:20px 0;
  }
  .stat-item:first-child{border-top:0;padding-top:0}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:28px}
  .cta-actions{width:100%;flex-wrap:wrap}
  .faq-q{padding:0 18px;gap:12px}
  .faq-a p{padding:0 18px 20px 18px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

@media (max-width:520px){
  .container{padding-left:20px;padding-right:20px}
  .logo-sub{display:none}
  .btn{width:100%;padding:0 20px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .faq-title{font-size:1rem}
}