/* roulang page: index */
:root{
  --bg:#080B12; --panel:#0F141E; --card:#151B28; --hov:#1B2330;
  --neon:#12E8B5; --neon-hover:#45F5CB; --neon-active:#0BC79B;
  --warm:#FF7A3D; --violet:#7A5CFF;
  --text:#E9EFF7; --muted:#98A5B7; --faint:#6B7789;
  --line:rgba(255,255,255,.08); --line-neon:rgba(18,232,181,.45);
  --glow:0 0 0 1px rgba(18,232,181,.35), 0 0 24px rgba(18,232,181,.18);
  --r-card:10px; --r-btn:8px; --r-badge:6px; --r-hero:14px; --r-input:8px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px; line-height:1.9; letter-spacing:.01em; color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(720px 320px at 50% -60px, rgba(18,232,181,.10), transparent 70%),
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size:auto,32px 32px,32px 32px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:.02em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(18,232,181,.55);outline-offset:2px;border-radius:4px}
::selection{background:rgba(18,232,181,.28)}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}

.section{padding-top:56px;padding-bottom:56px}
@media(min-width:768px){.section{padding-top:80px;padding-bottom:80px}}
@media(min-width:1024px){.section{padding-top:96px;padding-bottom:96px}}
.section-head{margin-bottom:32px}
@media(min-width:1024px){.section-head{margin-bottom:44px}}
.section-head h2{font-size:clamp(24px,3vw,36px)}
.section-sub{color:var(--muted);font-size:15px;margin-top:10px;max-width:62ch}
.eyebrow{font-size:13px;letter-spacing:.14em;color:var(--neon);text-transform:uppercase}

/* 顶部导航 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;background:rgba(8,11,18,.94);transition:background-color .2s ease-out}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,rgba(18,232,181,.7),rgba(18,232,181,0) 62%)}
.site-header.is-scrolled{background:rgba(8,11,18,.99)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;transition:height .2s ease-out}
.site-header.is-scrolled .header-inner{height:56px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{display:inline-flex;line-height:0}
.brand-text{font-size:19px;font-weight:600;letter-spacing:.02em}
.nav-desktop{display:none;align-items:center;gap:26px}
@media(min-width:1024px){.nav-desktop{display:flex}}
.nav-link{position:relative;font-size:15px;color:var(--muted);padding:6px 0;transition:color .2s ease-out}
.nav-link:hover{color:var(--neon)}
.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(18,232,181,.45)}
.nav-link.is-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(18,232,181,.6)}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{display:none}
@media(min-width:1024px){.header-cta{display:inline-flex}}
.menu-btn{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0 11px;background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;transition:border-color .2s ease-out}
.menu-btn:hover{border-color:var(--line-neon)}
.menu-btn span{display:block;height:1.5px;background:var(--text);border-radius:2px}
@media(min-width:1024px){.menu-btn{display:none}}

/* 移动端抽屉 */
.drawer{position:fixed;inset:0;z-index:80;visibility:hidden;pointer-events:none}
.drawer.is-open{visibility:visible;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(4,6,10,.62);opacity:0;transition:opacity .2s ease-out}
.drawer.is-open .drawer-mask{opacity:1}
.drawer-panel{position:absolute;top:0;right:0;width:280px;max-width:86%;height:100%;background:var(--panel);border-left:1px solid var(--line);padding:26px 20px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;transform:translateX(100%);transition:transform .22s ease-out}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-title{font-size:13px;color:var(--faint);letter-spacing:.1em;margin-bottom:8px}
.drawer-link{padding:12px 0;font-size:16px;color:var(--muted);border-bottom:1px solid var(--line);transition:color .2s ease-out}
.drawer-link:hover{color:var(--neon)}
.drawer-link.is-active{color:var(--neon)}
.drawer .btn{margin-top:18px;width:100%}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:12px 24px;border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,filter .2s ease-out}
.btn-primary{background:var(--warm);color:#0A0E15;box-shadow:0 6px 18px rgba(255,122,61,.24)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border-color:var(--line-neon);color:var(--neon);background:transparent}
.btn-ghost:hover{background:rgba(18,232,181,.10)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:38px}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--neon);transition:color .2s ease-out}
.btn-link:hover{color:var(--neon-hover)}
.btn-link svg{transition:transform .2s ease-out}
.btn-link:hover svg{transform:translateX(3px)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1.4;padding:4px 10px;border-radius:var(--r-badge);border:1px solid var(--line);color:var(--muted)}
.badge-neon{border-color:var(--line-neon);color:var(--neon)}
.badge-warm{border-color:rgba(255,122,61,.5);color:var(--warm)}
.badge-violet{border-color:rgba(122,92,255,.5);color:#A99AFF}

/* 首屏 */
.hero{position:relative;padding-top:112px;padding-bottom:56px}
@media(min-width:1024px){.hero{padding-top:150px;padding-bottom:96px}}
.hero-grid{display:grid;gap:36px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.02fr .98fr;gap:56px}}
.hero-title{font-size:clamp(30px,4.6vw,52px);line-height:1.2;margin-top:18px}
.hero-sub{font-size:clamp(17px,2vw,20px);font-weight:500;color:var(--neon);margin-top:14px}
.hero-desc{color:var(--muted);font-size:15px;margin-top:14px;max-width:52ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-note{font-size:13px;color:var(--faint);margin-top:16px}
.hero-media{position:relative;border-radius:var(--r-hero);overflow:hidden;border:1px solid var(--line-neon);aspect-ratio:16/10;background:var(--panel)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,11,18,.55),rgba(8,11,18,.85))}
.hero-tag{position:absolute;left:16px;bottom:16px;z-index:2;display:flex;flex-wrap:wrap;gap:8px}

/* 能力区 */
.cap-grid{display:grid;gap:20px}
@media(min-width:768px){.cap-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.cap-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out}
.card:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--glow);background:var(--hov)}
.card-top-line{position:absolute;top:0;left:14px;right:14px;height:3px;border-radius:0 0 3px 3px;background:linear-gradient(90deg,var(--neon),rgba(18,232,181,0))}
.cap-card{padding:24px 22px;display:flex;flex-direction:column;gap:12px}
.cap-lead{padding:0;overflow:hidden;display:flex;flex-direction:column}
@media(min-width:1024px){.cap-lead{grid-column:span 2;grid-row:span 2}}
.cap-lead .cap-cover{width:100%;aspect-ratio:16/9;object-fit:cover}
.cap-lead .cap-lead-body{padding:24px 22px;display:flex;flex-direction:column;gap:12px}
.cap-icon{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line-neon);color:var(--neon);background:rgba(18,232,181,.06)}
.cap-title{font-size:18px;font-weight:600}
.cap-text{font-size:14.5px;color:var(--muted);line-height:1.8}
.cap-lead .cap-title{font-size:22px}
.cap-lead .cap-text{font-size:15px}

/* 数据条带 */
.stats{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;padding-top:32px;padding-bottom:32px}
@media(min-width:1024px){.stats-grid{grid-template-columns:repeat(4,1fr);gap:32px;padding-top:42px;padding-bottom:42px}}
.stat-num{font-size:clamp(30px,3.4vw,42px);font-weight:700;line-height:1.1;color:var(--neon);font-variant-numeric:tabular-nums;text-shadow:0 0 18px rgba(18,232,181,.28)}
.stat-name{font-size:14px;color:var(--muted);margin-top:8px}
.stat-line{height:1px;background:linear-gradient(90deg,var(--line-neon),transparent);margin-top:12px}

/* 案例错位栅格 */
.case-grid{display:grid;gap:22px}
@media(min-width:1024px){.case-grid{grid-template-columns:repeat(12,1fr);gap:24px}}
.case-main{overflow:hidden;display:flex;flex-direction:column}
@media(min-width:1024px){.case-main{grid-column:span 7}}
.case-side{display:grid;gap:22px}
@media(min-width:1024px){.case-side{grid-column:span 5;gap:24px}}
.case-main img{width:100%;aspect-ratio:16/10;object-fit:cover}
.case-body{padding:22px;display:flex;flex-direction:column;gap:10px}
.case-sm{display:grid;grid-template-columns:112px 1fr;align-items:center;overflow:hidden}
.case-sm img{width:112px;height:100%;min-height:104px;object-fit:cover}
.case-sm-body{padding:18px}
.case-title{font-size:18px;font-weight:600}
.case-text{font-size:14.5px;color:var(--muted);line-height:1.8}

/* 方案区 */
.plan-row{display:grid;gap:28px;align-items:center}
@media(min-width:1024px){.plan-row{grid-template-columns:repeat(12,1fr);gap:48px}}
.plan-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--panel)}
.plan-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
@media(min-width:1024px){
  .plan-media{grid-column:span 5}
  .plan-text{grid-column:span 7}
  .plan-row.reverse .plan-media{order:2}
  .plan-row.reverse .plan-text{order:1}
}
.plan-text h3{font-size:clamp(19px,2.2vw,24px)}
.plan-text .plan-desc{color:var(--muted);font-size:15px;margin-top:12px}
.plan-points{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.plan-points li{display:flex;gap:10px;font-size:15px;color:var(--muted)}
.plan-points li::before{content:"";flex:0 0 auto;width:7px;height:7px;margin-top:10px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px rgba(18,232,181,.55)}
.plan-text .btn{margin-top:22px}

/* 最新信息 */
.news-head{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;justify-content:space-between;margin-bottom:32px}
.news-grid{display:grid;gap:20px}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.news-card{display:flex;flex-direction:column;overflow:hidden;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--glow)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--panel)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--faint);font-variant-numeric:tabular-nums}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--violet);display:inline-block}
.news-title{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-summary{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:49px}
.news-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--faint)}
.news-more{display:inline-flex;align-items:center;gap:6px;color:var(--neon);font-weight:600}
.empty-state{grid-column:1/-1;border:1px dashed var(--line-neon);border-radius:var(--r-card);padding:44px 24px;text-align:center;color:var(--muted);background:var(--panel)}
.empty-state .empty-icon{width:46px;height:46px;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid var(--line-neon);color:var(--neon)}

/* FAQ */
.faq-wrap{display:grid;gap:28px}
@media(min-width:1024px){.faq-wrap{grid-template-columns:repeat(12,1fr);gap:40px;align-items:start}}
.faq-aside{grid-column:span 4}
.faq-list{grid-column:span 8;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-btn);overflow:hidden;transition:border-color .2s ease-out,box-shadow .2s ease-out}
.faq-item.is-open{border-color:var(--line-neon);box-shadow:var(--glow)}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;padding:16px 18px;background:transparent;border:0;text-align:left;cursor:pointer;font-size:16px;font-weight:600}
.faq-num{color:var(--neon);font-variant-numeric:tabular-nums;font-size:13px;border:1px solid var(--line-neon);border-radius:var(--r-badge);padding:1px 7px;flex:0 0 auto}
.faq-q .faq-icon{margin-left:auto;flex:0 0 auto;color:var(--neon);transition:transform .2s ease-out;font-size:20px;line-height:1}
.faq-item.is-open .faq-q .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.faq-item.is-open .faq-a{max-height:180px}
.faq-a p{padding:0 18px 18px 52px;font-size:15px;color:var(--muted);line-height:1.8}

/* 联系 */
.contact-grid{display:grid;gap:28px}
@media(min-width:1024px){.contact-grid{grid-template-columns:repeat(12,1fr);gap:40px}}
.contact-form{grid-column:span 7;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-card)}
.contact-aside{grid-column:span 5;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:26px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-input);padding:11px 13px;font-size:15px;color:var(--text);transition:border-color .2s ease-out,box-shadow .2s ease-out}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(18,232,181,.18)}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--neon) 50%),linear-gradient(135deg,var(--neon) 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.form-note{font-size:13px;color:var(--faint);margin-top:12px}
.form-msg{margin-top:12px;font-size:14px;color:var(--neon)}
.aside-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.aside-list li{display:flex;gap:10px;font-size:15px;color:var(--muted)}
.aside-list li::before{content:"";flex:0 0 auto;width:7px;height:7px;margin-top:10px;border-radius:50%;background:var(--neon)}

/* 页脚 */
.site-footer{background:var(--panel);border-top:1px solid transparent;position:relative;margin-top:24px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(18,232,181,.7),rgba(18,232,181,0) 65%)}
.footer-grid{display:grid;gap:28px;padding-top:48px;padding-bottom:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr);gap:32px;padding-top:56px}}
.footer-title{font-size:14px;color:var(--text);font-weight:600;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--muted);transition:color .2s ease-out}
.footer-links a:hover{color:var(--neon)}
.footer-brand-text{font-size:19px;font-weight:600}
.footer-tag{font-size:14px;color:var(--muted);margin-top:10px}
.footer-info{font-size:14px;color:var(--muted);display:flex;flex-direction:column;gap:10px}
.copyright{border-top:1px solid var(--line);padding-top:18px;padding-bottom:24px;font-size:12px;color:var(--faint);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg:#080B12;
  --panel:#0F141E;
  --card:#151B28;
  --card-h:#1B2330;
  --neon:#12E8B5;
  --neon-h:#45F5CB;
  --neon-p:#0BC79B;
  --warm:#FF7A3D;
  --violet:#7A5CFF;
  --text:#E9EFF7;
  --muted:#98A5B7;
  --faint:#6B7789;
  --line:rgba(255,255,255,0.08);
  --line-neon:rgba(18,232,181,0.45);
  --glow:0 0 0 1px rgba(18,232,181,0.35), 0 0 24px rgba(18,232,181,0.18);
  --shadow:0 8px 24px rgba(0,0,0,0.35);
  --r-card:10px;
  --r-btn:8px;
  --r-badge:6px;
  --r-hero:14px;
  --reading:780px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size:32px 32px;
  color:var(--text);
  font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  top:0;left:0;right:0;
  height:520px;
  pointer-events:none;
  z-index:0;
  background:radial-gradient(620px 300px at 50% -90px, rgba(18,232,181,0.10), transparent 70%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid rgba(18,232,181,0.55);outline-offset:2px;border-radius:4px}
::selection{background:rgba(18,232,181,0.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0F17}
::-webkit-scrollbar-thumb{background:#232B3A;border-radius:6px;border:2px solid #0B0F17}
::-webkit-scrollbar-thumb:hover{background:#2F3A4D}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,11,18,0.93);
  backdrop-filter:saturate(140%);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg, rgba(18,232,181,0.7), rgba(18,232,181,0.05) 55%, transparent);
}
.header-inner{display:flex;align-items:center;gap:16px;height:64px;transition:height .2s ease-out}
.site-header.is-scrolled .header-inner{height:56px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px}
.brand-text{font-size:19px;font-weight:600;letter-spacing:.02em;color:var(--text);white-space:nowrap}
.nav-desktop{display:none}
@media (min-width:1024px){
  .nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto}
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--muted);
  border-radius:6px;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,0.045)}
.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(18,232,181,0.45)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(18,232,181,0.7);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media (min-width:1024px){.header-actions{margin-left:0}}
.menu-btn{
  width:44px;height:44px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);border-radius:8px;transition:border-color .18s ease-out,background-color .18s ease-out;
}
.menu-btn:hover{border-color:var(--line-neon);background:rgba(18,232,181,0.08)}
.menu-btn span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s ease-out,opacity .2s ease-out}
@media (min-width:1024px){.menu-btn{display:none}}
.header-cta{display:none}
@media (min-width:1024px){.header-cta{display:inline-flex}}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--warm);color:#16100B;box-shadow:0 6px 18px rgba(255,122,61,0.24)}
.btn-primary:hover{background:#FF8A52;transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--line-neon);color:var(--neon);background:transparent}
.btn-ghost:hover{background:rgba(18,232,181,0.10);box-shadow:var(--glow)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;line-height:1.6;
  border:1px solid var(--line-neon);
  color:var(--neon);
  background:rgba(18,232,181,0.06);
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:80;
  background:rgba(6,8,13,0.72);
  opacity:0;visibility:hidden;
  transition:opacity .2s ease-out,visibility .2s ease-out;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:280px;max-width:86vw;
  padding:20px;
  background:var(--panel);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .22s ease-out;
  display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:12px}
.drawer-title{font-size:17px;font-weight:600;letter-spacing:.02em}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font-size:18px;color:var(--muted)}
.drawer-close:hover{border-color:var(--line-neon);color:var(--neon)}
.drawer-nav{display:flex;flex-direction:column;gap:20px;padding:8px 0 20px}
.drawer-nav a{font-size:15px;color:var(--muted)}
.drawer-nav a:hover{color:var(--neon)}
.drawer-nav a.is-active{color:var(--neon);text-shadow:0 0 12px rgba(18,232,181,0.45)}
.drawer-cta{margin-top:auto}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:22px 0 0;position:relative;z-index:1}
.crumb{
  display:flex;align-items:center;gap:8px;
  max-width:var(--reading);margin:0 auto;
  font-size:13px;color:var(--muted);overflow:hidden;
}
.crumb a:hover{color:var(--neon)}
.crumb-sep{color:var(--faint)}
.crumb-current{color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-head{padding:22px 0 0;position:relative;z-index:1}
.article-head-inner{max-width:var(--reading);margin:0 auto}
.article-title{
  margin:14px 0 18px;
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:.01em;
  overflow-wrap:break-word;
}
.meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding-bottom:20px;border-bottom:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.meta-bar .dot{width:3px;height:3px;border-radius:50%;background:var(--violet);display:inline-block}
.article-cover{max-width:var(--reading);margin:24px auto 0}
.article-cover img{
  width:100%;aspect-ratio:21/9;object-fit:cover;
  border-radius:var(--r-hero);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}

/* ---------- article body ---------- */
.article-shell{padding:34px 0 0;position:relative;z-index:1}
.article-body{
  max-width:760px;margin:0 auto;
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  color:#D9E2ED;
  overflow-wrap:break-word;
}
.article-body > * + *{margin-top:1.1em}
.article-body h2{
  font-size:clamp(22px,2.4vw,26px);
  line-height:1.4;font-weight:600;color:var(--text);
  margin:2em 0 .7em;padding-left:14px;
  border-left:3px solid var(--neon);
}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--text);margin:1.6em 0 .6em}
.article-body p{margin:0}
.article-body ul,.article-body ol{padding-left:1.4em;margin:1.1em 0}
.article-body li{margin:.4em 0}
.article-body ul li::marker{color:var(--neon)}
.article-body ol li::marker{color:var(--neon);font-weight:600}
.article-body a{color:var(--neon);border-bottom:1px solid rgba(18,232,181,0.35)}
.article-body a:hover{color:var(--neon-h);border-bottom-color:var(--neon-h)}
.article-body strong{color:#FFFFFF;font-weight:600}
.article-body img{border-radius:10px;border:1px solid var(--line);margin:1.4em auto}
.article-body blockquote{
  margin:1.4em 0;padding:14px 18px;
  border-left:3px solid var(--neon);
  background:rgba(18,232,181,0.055);
  border-radius:0 8px 8px 0;
  color:var(--muted);
}
.article-body blockquote p{margin:0}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--panel);color:var(--text);font-weight:600}
.article-body tbody tr:nth-child(even) td{background:rgba(255,255,255,0.02)}
.article-body code{
  background:var(--panel);border:1px solid var(--line);
  padding:2px 6px;border-radius:6px;font-size:14px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.empty-state{
  border:1px dashed var(--line-neon);
  border-radius:var(--r-card);
  background:var(--panel);
  padding:44px 24px;
  text-align:center;
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 16px;
  border-radius:50%;border:1px solid var(--line-neon);
  display:flex;align-items:center;justify-content:center;color:var(--neon);
  box-shadow:var(--glow);
}
.empty-title{font-size:19px;font-weight:600;color:var(--text)}
.empty-desc{font-size:14px;color:var(--muted);margin:10px 0 20px}

/* ---------- related ---------- */
.related{padding:60px 0 0;position:relative;z-index:1}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:22px}
.section-title{font-size:clamp(21px,2.4vw,27px);font-weight:600;line-height:1.35}
.section-sub{font-size:13.5px;color:var(--faint);margin-top:8px}
.section-link{font-size:14px;color:var(--neon);display:inline-flex;align-items:center;gap:6px}
.section-link svg{transition:transform .18s ease-out}
.section-link:hover svg{transform:translateX(3px)}
.related-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(4,1fr)}}
.mini-card{
  display:flex;align-items:center;gap:12px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:12px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out;
}
.mini-card:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--glow);background:var(--card-h)}
.mini-card img{width:62px;height:62px;flex-shrink:0;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.mini-title{font-size:14.5px;font-weight:600;line-height:1.5;color:var(--text)}
.mini-meta{font-size:12px;color:var(--faint);margin-top:6px}
.related-foot{display:flex;justify-content:center;margin-top:28px}

/* ---------- cta band ---------- */
.cta-band{padding:60px 0 0;position:relative;z-index:1}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 26px;
  border:1px solid var(--line-neon);
  border-radius:var(--r-hero);
  background:linear-gradient(120deg, rgba(18,232,181,0.10), rgba(122,92,255,0.07) 58%, transparent);
}
.cta-inner h2{font-size:clamp(20px,2.3vw,25px);font-weight:600;line-height:1.4}
.cta-inner p{margin-top:10px;font-size:14.5px;color:var(--muted);max-width:54ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:70px;
  background:var(--panel);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg, rgba(18,232,181,0.7), rgba(122,92,255,0.28) 58%, transparent);
}
.footer-grid{
  display:grid;gap:28px;grid-template-columns:1fr;
  padding-top:48px;padding-bottom:32px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}}
.footer-brand-text{font-size:18px;font-weight:600;letter-spacing:.02em}
.footer-tag{font-size:13.5px;color:var(--faint);margin-top:10px}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--neon)}
.footer-info{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:var(--muted)}
.copyright{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  border-top:1px solid var(--line);
  padding-top:18px;padding-bottom:22px;
  font-size:12px;color:var(--faint);
}

@media (max-width:640px){
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .btn{width:100%}
  .header-cta,.menu-btn{width:auto}
  .cta-actions .btn{width:100%}
  .related-foot .btn{width:auto}
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
    --bg:#080B12;
    --panel:#0F141E;
    --card:#151B28;
    --card-hover:#1B2330;
    --primary:#12E8B5;
    --primary-hover:#45F5CB;
    --primary-active:#0BC79B;
    --accent:#FF7A3D;
    --violet:#7A5CFF;
    --text:#E9EFF7;
    --text-2:#98A5B7;
    --text-3:#6B7789;
    --line:rgba(255,255,255,0.08);
    --line-neon:rgba(18,232,181,0.45);
    --glow:0 0 0 1px rgba(18,232,181,0.35), 0 0 24px rgba(18,232,181,0.18);
    --r-card:10px;
    --r-btn:8px;
    --r-badge:6px;
    --r-hero:14px;
    --r-input:8px;
    --shadow-card:0 8px 24px rgba(0,0,0,0.35);
  }

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

  html{ scroll-behavior:smooth; }

  body{
    margin:0;
    background-color:var(--bg);
    background-image:
      radial-gradient(1100px 420px at 50% -120px, rgba(18,232,181,0.10), transparent 70%),
      linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size:auto, 32px 32px, 32px 32px;
    background-repeat:no-repeat, repeat, repeat;
    color:var(--text);
    font-family:Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size:16px;
    line-height:1.9;
    letter-spacing:0.01em;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }

  img{ max-width:100%; display:block; }
  a{ color:inherit; text-decoration:none; transition:color .18s ease-out; }
  button{ font-family:inherit; cursor:pointer; }
  input,select,textarea{ font-family:inherit; }

  h1,h2,h3,h4{ margin:0; font-weight:600; letter-spacing:0.01em; color:var(--text); }
  h1{ font-size:clamp(30px,4.6vw,52px); line-height:1.2; font-weight:700; }
  h2{ font-size:clamp(24px,3vw,36px); line-height:1.25; }
  h3{ font-size:clamp(18px,2vw,22px); line-height:1.4; }
  p{ margin:0; }

  ::selection{ background:rgba(18,232,181,0.28); color:#fff; }

  ::-webkit-scrollbar{ width:10px; height:10px; }
  ::-webkit-scrollbar-track{ background:#0B0F18; }
  ::-webkit-scrollbar-thumb{ background:#1E2735; border-radius:8px; border:2px solid #0B0F18; }
  ::-webkit-scrollbar-thumb:hover{ background:#2A3547; }

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:16px;
    padding-right:16px;
  }

  .section{ padding-top:56px; padding-bottom:56px; }
  .section-tight{ padding-top:40px; padding-bottom:40px; }

  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:12px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--primary);
  }
  .eyebrow::before{
    content:"";
    width:22px;
    height:1px;
    background:var(--primary);
    display:inline-block;
  }

  .section-head{ margin-bottom:32px; }
  .section-head .lead{
    margin-top:12px;
    color:var(--text-2);
    font-size:15px;
    max-width:64ch;
  }

  .divider{
    height:1px;
    background:linear-gradient(90deg, rgba(18,232,181,0.5), rgba(18,232,181,0));
    border:0;
  }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(8,11,18,0.94);
    border-bottom:1px solid var(--line);
    transition:background .2s ease-out;
  }
  .site-header::after{
    content:"";
    position:absolute;
    left:0; right:0; bottom:-1px;
    height:1px;
    background:linear-gradient(90deg, rgba(18,232,181,0.75), rgba(18,232,181,0));
    pointer-events:none;
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    height:64px;
    transition:height .2s ease-out;
  }
  .site-header.is-scrolled .header-inner{ height:56px; }
  .site-header.is-scrolled{ background:rgba(8,11,18,0.98); }

  .brand{ display:inline-flex; align-items:center; gap:10px; }
  .brand-mark{ display:inline-flex; width:30px; height:30px; }
  .brand-mark svg{ filter:drop-shadow(0 0 10px rgba(18,232,181,0.35)); }
  .brand-text{
    font-size:19px;
    font-weight:600;
    letter-spacing:0.02em;
    color:var(--text);
    white-space:nowrap;
  }
  .brand:hover .brand-text{ color:var(--primary-hover); }

  .nav-desktop{ display:flex; align-items:center; gap:26px; }
  .nav-link{
    position:relative;
    font-size:14.5px;
    color:var(--text-2);
    padding:6px 2px;
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0; right:0; bottom:-2px;
    height:2px;
    background:var(--primary);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .2s ease-out;
  }
  .nav-link:hover{ color:var(--text); }
  .nav-link:hover::after{ transform:scaleX(1); }
  .nav-link.is-active{
    color:var(--primary);
    text-shadow:0 0 14px rgba(18,232,181,0.55);
  }
  .nav-link.is-active::after{ transform:scaleX(1); box-shadow:0 0 12px rgba(18,232,181,0.6); }

  .header-actions{ display:flex; align-items:center; gap:12px; }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    border-radius:var(--r-btn);
    font-size:15px;
    font-weight:600;
    padding:12px 24px;
    border:1px solid transparent;
    transition:all .2s ease-out;
    min-height:44px;
    line-height:1.2;
  }
  .btn:focus-visible{
    outline:none;
    box-shadow:0 0 0 2px rgba(18,232,181,0.55);
  }
  .btn-primary{
    background:var(--accent);
    color:#14100C;
  }
  .btn-primary:hover{ filter:brightness(1.08); transform:translateY(-1px); }
  .btn-primary:active{ transform:translateY(1px); filter:brightness(0.96); }
  .btn-ghost{
    background:transparent;
    border-color:var(--line-neon);
    color:var(--primary);
  }
  .btn-ghost:hover{ background:rgba(18,232,181,0.10); color:var(--primary-hover); }
  .btn-ghost:active{ background:rgba(18,232,181,0.16); }
  .btn-sm{ padding:9px 18px; font-size:14px; min-height:40px; }
  .btn-block{ width:100%; }

  .link-arrow{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--primary);
    font-size:14.5px;
    font-weight:600;
  }
  .link-arrow svg{ transition:transform .2s ease-out; }
  .link-arrow:hover svg{ transform:translateX(3px); }
  .link-arrow:focus-visible{ outline:none; box-shadow:0 0 0 2px rgba(18,232,181,0.55); border-radius:4px; }

  .menu-btn{
    display:none;
    width:44px;
    height:44px;
    border:1px solid var(--line);
    border-radius:var(--r-btn);
    background:var(--panel);
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:5px;
    padding:0;
  }
  .menu-btn span{
    display:block;
    width:18px;
    height:1.6px;
    background:var(--text);
    transition:background .2s ease-out;
  }
  .menu-btn:hover span{ background:var(--primary); }

  /* ---------- 移动抽屉 ---------- */
  .drawer-mask{
    position:fixed;
    inset:0;
    background:rgba(4,6,10,0.7);
    opacity:0;
    visibility:hidden;
    transition:opacity .2s ease-out, visibility .2s ease-out;
    z-index:70;
  }
  .drawer-mask.is-open{ opacity:1; visibility:visible; }

  .mobile-drawer{
    position:fixed;
    top:0; right:0;
    width:280px;
    max-width:86vw;
    height:100%;
    background:var(--panel);
    border-left:1px solid var(--line);
    z-index:80;
    transform:translateX(100%);
    transition:transform .22s ease-out;
    display:flex;
    flex-direction:column;
    padding:20px;
  }
  .mobile-drawer.is-open{ transform:translateX(0); }
  .drawer-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding-bottom:16px;
    border-bottom:1px solid var(--line);
  }
  .drawer-close{
    width:40px; height:40px;
    border-radius:var(--r-btn);
    border:1px solid var(--line);
    background:transparent;
    color:var(--text-2);
    font-size:18px;
    line-height:1;
  }
  .drawer-close:hover{ color:var(--primary); border-color:var(--line-neon); }
  .drawer-nav{
    display:flex;
    flex-direction:column;
    gap:20px;
    padding:24px 0;
    flex:1;
  }
  .drawer-nav a{
    font-size:15px;
    color:var(--text-2);
  }
  .drawer-nav a:hover,
  .drawer-nav a.is-active{ color:var(--primary); }

  /* ---------- 页头 Hero ---------- */
  .page-hero{
    position:relative;
    overflow:hidden;
    border-bottom:1px solid var(--line);
  }
  .page-hero-bg{
    position:absolute;
    inset:0;
    background-image:
      linear-gradient(180deg, rgba(8,11,18,0.6), rgba(8,11,18,0.92)),
      url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    z-index:0;
  }
  .page-hero-inner{
    position:relative;
    z-index:1;
    padding-top:60px;
    padding-bottom:60px;
  }
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--text-2);
    margin-bottom:20px;
  }
  .breadcrumb a:hover{ color:var(--primary); }
  .breadcrumb .sep{ color:var(--text-3); }
  .breadcrumb .current{ color:var(--text); }

  .page-hero h1{ max-width:820px; }
  .page-hero .hero-desc{
    margin-top:18px;
    max-width:640px;
    color:var(--text-2);
    font-size:15.5px;
  }
  .hero-meta{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:24px;
  }

  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:4px 10px;
    border-radius:var(--r-badge);
    border:1px solid var(--line);
    font-size:12px;
    color:var(--text-2);
    letter-spacing:0.02em;
  }
  .badge-neon{ border-color:var(--line-neon); color:var(--primary); }
  .badge-ember{ border-color:rgba(255,122,61,0.5); color:var(--accent); }
  .badge-violet{ border-color:rgba(122,92,255,0.5); color:#A99BFF; }

  /* ---------- 概览条带 ---------- */
  .band{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    padding:24px;
  }
  .band-grid{
    display:grid;
    grid-template-columns:repeat(3, minmax(0,1fr));
    gap:20px;
  }
  .band-item h3{
    font-size:16px;
    margin-bottom:8px;
  }
  .band-item p{
    font-size:14px;
    color:var(--text-2);
    line-height:1.75;
  }
  .band-index{
    font-size:12px;
    font-variant-numeric:tabular-nums;
    color:var(--primary);
    letter-spacing:0.16em;
    display:block;
    margin-bottom:10px;
  }

  /* ---------- 分块步骤 ---------- */
  .step-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    padding:28px;
    transition:transform .2s ease-out, border-color .2s ease-out, box-shadow .2s ease-out;
  }
  .step-card:hover{
    transform:translateY(-4px);
    border-color:var(--line-neon);
    box-shadow:var(--glow), var(--shadow-card);
  }
  .step-num{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:46px;
    height:46px;
    border:1px solid var(--line-neon);
    border-radius:8px;
    color:var(--primary);
    font-size:15px;
    font-weight:600;
    font-variant-numeric:tabular-nums;
    letter-spacing:0.06em;
    background:rgba(18,232,181,0.05);
    flex:0 0 auto;
  }
  .step-num.is-round{ border-radius:999px; }

  .step-card h2{ font-size:clamp(20px,2.2vw,24px); margin-top:18px; }
  .step-card .step-lead{
    margin-top:12px;
    color:var(--text-2);
    font-size:14.5px;
  }

  .point-list{
    list-style:none;
    padding:0;
    margin:20px 0 0;
    display:grid;
    gap:10px;
  }
  .point-list li{
    position:relative;
    padding-left:20px;
    font-size:14.5px;
    color:var(--text-2);
    line-height:1.8;
  }
  .point-list li::before{
    content:"";
    position:absolute;
    left:2px;
    top:11px;
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--primary);
    box-shadow:0 0 10px rgba(18,232,181,0.55);
  }
  .point-list.two-col{ grid-template-columns:repeat(2, minmax(0,1fr)); column-gap:24px; }

  .step-figure{
    position:relative;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    background:var(--panel);
  }
  .step-figure img{
    width:100%;
    height:100%;
    aspect-ratio:16/10;
    object-fit:cover;
    opacity:0.92;
  }
  .step-figure::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, rgba(8,11,18,0.12), rgba(8,11,18,0.68));
    pointer-events:none;
  }
  .step-figure figcaption{
    position:absolute;
    left:16px;
    bottom:14px;
    z-index:2;
    font-size:12.5px;
    color:var(--text-2);
    letter-spacing:0.02em;
  }

  .step-actions{
    margin-top:22px;
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    align-items:center;
  }

  .step-inner-grid{
    display:grid;
    grid-template-columns:repeat(12, minmax(0,1fr));
    gap:32px;
    align-items:center;
  }
  .step-col-text{ grid-column:span 7; }
  .step-col-fig{ grid-column:span 5; }
  .step-col-text.full{ grid-column:span 12; }

  /* ---------- FAQ ---------- */
  .faq-wrap{
    display:grid;
    grid-template-columns:repeat(12, minmax(0,1fr));
    gap:32px;
  }
  .faq-aside{ grid-column:span 4; }
  .faq-list{ grid-column:span 8; display:grid; gap:12px; }

  .faq-item{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    transition:border-color .2s ease-out, box-shadow .2s ease-out;
  }
  .faq-item:hover{ border-color:var(--line-neon); }
  .faq-item.is-open{ border-color:var(--line-neon); box-shadow:var(--glow); }

  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    gap:14px;
    background:transparent;
    border:0;
    padding:18px 20px;
    text-align:left;
    color:var(--text);
    font-size:15.5px;
    font-weight:600;
  }
  .faq-q:focus-visible{ outline:none; box-shadow:0 0 0 2px rgba(18,232,181,0.55) inset; }
  .faq-q .q-index{
    color:var(--primary);
    font-size:14px;
    font-variant-numeric:tabular-nums;
    flex:0 0 auto;
  }
  .faq-q .q-text{ flex:1; }
  .faq-icon{
    position:relative;
    width:18px;
    height:18px;
    flex:0 0 auto;
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--primary);
    transition:transform .2s ease-out, opacity .2s ease-out;
  }
  .faq-icon::before{ left:0; top:8px; width:18px; height:1.6px; }
  .faq-icon::after{ left:8px; top:0; width:1.6px; height:18px; }
  .faq-item.is-open .faq-icon::after{ transform:rotate(90deg); opacity:0; }

  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .22s ease-out;
  }
  .faq-a p{
    padding:0 20px 20px 52px;
    color:var(--text-2);
    font-size:15px;
    line-height:1.8;
  }

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    border:1px solid var(--line-neon);
    border-radius:var(--r-hero);
    background:
      linear-gradient(120deg, rgba(18,232,181,0.10), rgba(8,11,18,0.9) 55%),
      var(--panel);
    padding:32px;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    box-shadow:var(--shadow-card);
  }
  .cta-band h2{ font-size:clamp(20px,2.4vw,26px); }
  .cta-band p{
    margin-top:10px;
    color:var(--text-2);
    font-size:14.5px;
    max-width:56ch;
  }
  .cta-actions{ display:flex; flex-wrap:wrap; gap:14px; }

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;
    margin-top:40px;
    background:var(--panel);
    border-top:1px solid var(--line);
  }
  .site-footer::before{
    content:"";
    position:absolute;
    top:-1px; left:0; right:0;
    height:1px;
    background:linear-gradient(90deg, rgba(18,232,181,0.7), rgba(18,232,181,0));
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.2fr;
    gap:32px;
    padding-top:52px;
    padding-bottom:36px;
  }
  .footer-brand-text{
    font-size:19px;
    font-weight:600;
    letter-spacing:0.02em;
    color:var(--text);
  }
  .footer-tag{
    margin-top:10px;
    font-size:13.5px;
    color:var(--text-3);
  }
  .footer-title{
    font-size:14px;
    font-weight:600;
    color:var(--text);
    margin-bottom:14px;
  }
  .footer-links,
  .footer-info{
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  .footer-links a{
    font-size:14px;
    color:var(--text-2);
  }
  .footer-links a:hover{ color:var(--primary); }
  .footer-info span{
    font-size:13.5px;
    color:var(--text-2);
  }
  .copyright{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:10px;
    padding-top:18px;
    padding-bottom:24px;
    border-top:1px solid var(--line);
    font-size:12px;
    color:var(--text-3);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .nav-desktop{ display:none; }
    .menu-btn{ display:flex; }
    .header-cta{ display:none; }
    .step-col-text,
    .step-col-fig{ grid-column:span 12; }
    .faq-aside,
    .faq-list{ grid-column:span 12; }
    .band-grid{ grid-template-columns:repeat(2, minmax(0,1fr)); }
    .footer-grid{ grid-template-columns:repeat(2, minmax(0,1fr)); }
    .section{ padding-top:44px; padding-bottom:44px; }
  }

  @media (max-width:768px){
    .page-hero-inner{ padding-top:44px; padding-bottom:44px; }
    .point-list.two-col{ grid-template-columns:1fr; }
    .step-card{ padding:22px; }
    .cta-band{ padding:24px; }
    .cta-actions{ width:100%; }
    .cta-actions .btn{ flex:1 1 auto; }
  }

  @media (max-width:520px){
    .band-grid{ grid-template-columns:1fr; }
    .footer-grid{ grid-template-columns:1fr; gap:26px; }
    .brand-text{ font-size:17px; }
    .btn{ padding:12px 18px; font-size:14.5px; }
    .step-card .step-num{ width:42px; height:42px; }
  }

  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{
      animation-duration:0.001ms !important;
      transition-duration:0.001ms !important;
      scroll-behavior:auto !important;
    }
  }

/* roulang page: category2 */
:root{
  --bg:#080B12;
  --panel:#0F141E;
  --card:#151B28;
  --card-hover:#1B2330;
  --primary:#12E8B5;
  --primary-hover:#45F5CB;
  --primary-active:#0BC79B;
  --accent:#FF7A3D;
  --violet:#7A5CFF;
  --text:#E9EFF7;
  --text-2:#98A5B7;
  --text-3:#6B7789;
  --line:rgba(255,255,255,0.08);
  --line-neon:rgba(18,232,181,0.45);
  --glow:0 0 0 1px rgba(18,232,181,0.35), 0 0 24px rgba(18,232,181,0.18);
  --shadow-card:0 8px 24px rgba(0,0,0,0.35);
  --r-card:10px;
  --r-btn:8px;
  --r-badge:6px;
  --r-hero:14px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:64px;
  background:var(--bg);
  color:var(--text);
  font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0.01em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.025) 1px,transparent 1px);
  background-size:32px 32px;
}
body::after{
  content:"";
  position:fixed;
  top:-200px;
  left:50%;
  transform:translateX(-50%);
  width:880px;
  height:520px;
  z-index:0;
  pointer-events:none;
  background:radial-gradient(circle at 50% 50%,rgba(18,232,181,0.10),transparent 68%);
}
img{max-width:100%;display:block;}
a{color:inherit;}
button{font-family:inherit;}
h1,h2,h3,p,ul{margin:0;}
ul{padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(18,232,181,0.55);outline-offset:2px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#0B0F18;}
::-webkit-scrollbar-thumb{background:#1E2836;border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:#2A3648;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 16px;position:relative;z-index:1;}
@media(min-width:768px){.container{padding:0 24px;}}
@media(min-width:1024px){.container{padding:0 32px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  background:rgba(8,11,18,0.96);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,rgba(18,232,181,0.65),rgba(18,232,181,0) 62%);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:64px;
  transition:height 200ms ease-out;
}
.site-header.is-scrolled .header-inner{height:56px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.brand-mark{display:inline-flex;width:30px;height:30px;}
.brand-mark svg{display:block;width:30px;height:30px;}
.brand-text{font-size:19px;font-weight:600;letter-spacing:0.02em;color:var(--text);}
.nav-desktop{display:none;}
@media(min-width:1024px){
  .nav-desktop{display:flex;align-items:center;gap:4px;margin-left:14px;}
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  text-decoration:none;
  border-radius:var(--r-btn);
  transition:color 200ms ease-out,background 200ms ease-out;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,0.04);}
.nav-link.is-active{color:var(--primary);text-shadow:0 0 14px rgba(18,232,181,0.5);}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(18,232,181,0.85);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  text-decoration:none;
  cursor:pointer;
  transition:background 200ms ease-out,color 200ms ease-out,border-color 200ms ease-out,transform 200ms ease-out,box-shadow 200ms ease-out,filter 200ms ease-out;
}
.btn-primary{background:var(--accent);color:#221006;}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 8px 22px rgba(255,122,61,0.28);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--line-neon);color:var(--primary);}
.btn-ghost:hover{background:rgba(18,232,181,0.10);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:38px;padding:8px 16px;font-size:14px;}

.menu-btn{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  padding:0 11px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  cursor:pointer;
  transition:border-color 200ms ease-out;
}
.menu-btn:hover{border-color:var(--line-neon);}
.menu-btn span{display:block;height:2px;width:100%;background:var(--text);border-radius:2px;}
@media(min-width:1024px){.menu-btn{display:none;}}
@media(max-width:1023px){.header-cta{display:none;}}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(4,6,10,0.66);
  opacity:0;visibility:hidden;
  transition:opacity 200ms ease-out,visibility 200ms ease-out;
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  width:280px;max-width:86vw;height:100%;
  background:var(--panel);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform 220ms ease-out;
  z-index:80;
  display:flex;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
}
.mobile-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);}
.drawer-close{
  width:40px;height:40px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text-2);
  font-size:20px;line-height:1;
  cursor:pointer;
  transition:color 200ms ease-out,border-color 200ms ease-out;
}
.drawer-close:hover{color:var(--primary);border-color:var(--line-neon);}
.drawer-nav{display:flex;flex-direction:column;gap:20px;padding:24px 0;flex:1;}
.drawer-link{color:var(--text-2);font-size:16px;text-decoration:none;transition:color 200ms ease-out;}
.drawer-link:hover{color:var(--primary);}
.drawer-link.is-active{color:var(--primary);font-weight:600;}
.drawer-cta{width:100%;}

/* ============ 页头 ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.hero-media{position:absolute;inset:0;}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center;border:0;}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,11,18,0.58),rgba(8,11,18,0.92));
}
.hero-inner{position:relative;padding-top:46px;padding-bottom:44px;}
@media(min-width:1024px){.hero-inner{padding-top:60px;padding-bottom:56px;}}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.crumbs a{color:var(--text-2);text-decoration:none;transition:color 200ms ease-out;}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:var(--text-3);}
.crumbs .current{color:var(--text);}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(28px,4.4vw,46px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:0.01em;
  max-width:860px;
}
.hero-lead{margin-top:16px;max-width:660px;font-size:16px;color:var(--text-2);line-height:1.9;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  font-size:12px;
  line-height:1.7;
  border:1px solid var(--line);
  border-radius:var(--r-badge);
  color:var(--text-2);
}
.tag.is-neon{border-color:var(--line-neon);color:var(--primary);}
.tag.is-violet{border-color:rgba(122,92,255,0.45);color:#B7A8FF;}

/* ============ 通用板块 ============ */
.section{padding:56px 0;scroll-margin-top:84px;}
@media(min-width:768px){.section{padding:80px 0;}}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:600;margin:0 0 12px;}
.section-head p{color:var(--text-2);font-size:15px;}
.divider{height:1px;background:linear-gradient(90deg,rgba(18,232,181,0.35),rgba(255,255,255,0.04));margin:0;border:0;}

/* ============ 概览卡条 ============ */
.summary-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media(min-width:768px){.summary-grid{grid-template-columns:repeat(3,1fr);}}
.summary-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:border-color 200ms ease-out,transform 200ms ease-out,box-shadow 200ms ease-out;
}
.summary-card:hover{border-color:var(--line-neon);transform:translateY(-4px);box-shadow:var(--shadow-card),var(--glow);}
.summary-num{
  font-size:clamp(30px,3.4vw,42px);
  font-weight:700;
  line-height:1.1;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  text-shadow:0 0 20px rgba(18,232,181,0.35);
}
.summary-label{margin-top:10px;font-size:15px;font-weight:600;}
.summary-desc{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.8;}

/* ============ 内容分块 ============ */
.block{
  display:grid;
  gap:24px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px;
  margin-bottom:22px;
  box-shadow:var(--shadow-card);
  transition:border-color 200ms ease-out,transform 200ms ease-out,box-shadow 200ms ease-out;
}
.block:last-child{margin-bottom:0;}
.block:hover{border-color:var(--line-neon);transform:translateY(-4px);box-shadow:var(--shadow-card),var(--glow);}
.block-body{min-width:0;}
.block-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;height:46px;
  border-radius:8px;
  background:var(--primary);
  color:#04140F;
  font-size:17px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 18px rgba(18,232,181,0.35);
}
.block h2{margin:16px 0 14px;font-size:20px;line-height:1.4;font-weight:600;}
.block-list{display:grid;gap:10px;}
.block-list li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2);line-height:1.8;}
.block-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 8px rgba(18,232,181,0.6);
}
.block-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--line);
}
@media(min-width:1024px){
  .block{grid-template-columns:7fr 5fr;gap:36px;padding:34px 36px;}
  .block.has-media .block-media{order:2;}
  .block.has-media.media-left .block-media{order:-1;}
  .block.has-media.media-left{grid-template-columns:5fr 7fr;}
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:18px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  text-decoration:none;
  transition:color 200ms ease-out;
}
.link-arrow svg{transition:transform 200ms ease-out;}
.link-arrow:hover{color:var(--primary-hover);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ============ 流程 ============ */
.flow-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media(min-width:768px){.flow-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.flow-grid{grid-template-columns:repeat(4,1fr);}}
.flow-item{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px;
  transition:border-color 200ms ease-out,background 200ms ease-out,transform 200ms ease-out;
}
.flow-item:hover{border-color:var(--line-neon);background:var(--card-hover);transform:translateY(-4px);}
.flow-item::before{
  content:"";
  position:absolute;
  top:0;left:22px;right:22px;
  height:3px;
  border-radius:0 0 3px 3px;
  background:linear-gradient(90deg,var(--primary),rgba(18,232,181,0));
  opacity:0.7;
}
.flow-step{font-size:13px;color:var(--primary);letter-spacing:0.14em;font-variant-numeric:tabular-nums;}
.flow-item h3{margin:12px 0 10px;font-size:18px;font-weight:600;}
.flow-item p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ============ 异常对照 ============ */
.matrix{display:grid;gap:14px;}
.matrix-row{
  display:grid;
  gap:10px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 22px;
  transition:border-color 200ms ease-out,background 200ms ease-out;
}
.matrix-row:hover{border-color:var(--line-neon);background:var(--card-hover);}
.matrix-symptom{font-size:15px;font-weight:600;color:var(--text);display:flex;align-items:flex-start;gap:10px;}
.matrix-symptom::before{
  content:"";
  flex:0 0 auto;
  width:8px;height:8px;
  margin-top:8px;
  border-radius:2px;
  background:var(--accent);
  box-shadow:0 0 10px rgba(255,122,61,0.5);
}
.matrix-action{font-size:14px;color:var(--text-2);line-height:1.8;}
@media(min-width:768px){
  .matrix-row{grid-template-columns:1fr 1.35fr;align-items:center;gap:24px;padding:22px 26px;}
}

/* ============ 更新记录 ============ */
.update-list{display:grid;gap:0;border-top:1px solid var(--line);}
.update-item{
  display:grid;
  gap:6px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
@media(min-width:768px){
  .update-item{grid-template-columns:180px 1fr;gap:24px;align-items:baseline;}
}
.update-meta{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;letter-spacing:0.04em;}
.update-text{font-size:15px;color:var(--text-2);line-height:1.8;}

/* ============ FAQ ============ */
.faq-layout{display:grid;gap:28px;}
@media(min-width:1024px){.faq-layout{grid-template-columns:4fr 8fr;gap:44px;align-items:start;}}
.faq-aside h2{font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:600;margin-bottom:12px;}
.faq-aside p{font-size:14px;color:var(--text-2);}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:8px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color 200ms ease-out,box-shadow 200ms ease-out;
}
.faq-item:hover{border-color:var(--line-neon);}
.faq-item.is-open{border-color:var(--line-neon);box-shadow:var(--glow);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 20px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
}
.faq-index{color:var(--primary);font-size:14px;font-variant-numeric:tabular-nums;}
.faq-icon{position:relative;margin-left:auto;width:16px;height:16px;flex:0 0 auto;transition:transform 200ms ease-out;}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  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.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms ease-out;}
.faq-a p{padding:0 20px 18px;font-size:15px;color:var(--text-2);line-height:1.8;}
.faq-item.is-open .faq-a{max-height:260px;}

/* ============ CTA 条带 ============ */
.cta-band{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  align-items:center;
  justify-content:space-between;
  padding:30px 24px;
  border:1px solid var(--line-neon);
  border-radius:var(--r-hero);
  background:linear-gradient(120deg,rgba(18,232,181,0.10),rgba(15,20,30,0.92));
  box-shadow:var(--glow);
}
@media(min-width:1024px){.cta-band{padding:38px 40px;}}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:600;max-width:640px;}
.cta-band p{margin-top:10px;font-size:14px;color:var(--text-2);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media(max-width:520px){.cta-actions{width:100%;}.cta-actions .btn{width:100%;}}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:24px;
  padding-top:48px;
  background:var(--panel);
  border-top:1px solid var(--line);
  z-index:1;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(18,232,181,0.55),rgba(18,232,181,0) 68%);
}
.footer-grid{display:grid;gap:28px;grid-template-columns:1fr;padding-bottom:36px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:32px;}}
.footer-brand-text{font-size:19px;font-weight:600;letter-spacing:0.02em;margin:0 0 10px;}
.footer-tag{font-size:13px;color:var(--text-3);line-height:1.8;}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin:0 0 14px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);text-decoration:none;transition:color 200ms ease-out;}
.footer-links a:hover{color:var(--primary);}
.footer-info{display:grid;gap:10px;font-size:14px;color:var(--text-2);}
.copyright{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  border-top:1px solid var(--line);
  padding-top:18px;
  padding-bottom:18px;
  font-size:12px;
  color:var(--text-3);
}

@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}