/* roulang page: index */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1424;
  --panel:rgba(255,255,255,.055);
  --panel-line:rgba(255,255,255,.10);
  --brand:#2EE6C5;
  --brand-press:#1BC7AA;
  --accent:#FFB84D;
  --text-1:#E8F0F7;
  --text-2:#A7B7C8;
  --text-3:#6E8299;
  --ok:#3DDC97;
  --warn:#FFB84D;
  --error:#FF6B6B;
  --line:rgba(255,255,255,.08);
  --r-btn:12px;
  --r-card:16px;
  --r-panel:20px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(46,230,197,.35),0 0 24px rgba(46,230,197,.26);
  --sidebar-w:260px;
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--bg-0);
  color:var(--text-1);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--text-2);text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,transform .2s ease-out;}
a:hover{color:var(--text-1);}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:none;cursor:pointer;}
ul,ol{list-style:none;}
h1,h2,h3,h4{font-weight:700;line-height:1.3;letter-spacing:0;}
p{color:var(--text-2);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:rgba(46,230,197,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-0);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(46,230,197,.45);}

/* ---------- App shell ---------- */
.app-shell{min-height:100vh;}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--bg-1);border-right:1px solid var(--line);
  padding:24px 20px;display:flex;flex-direction:column;gap:28px;
  z-index:60;transition:transform .2s ease-out;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--text-1);}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:24px;height:24px;flex:0 0 24px;border-radius:8px;
  background:linear-gradient(140deg,var(--brand),var(--brand-press));
  box-shadow:0 0 0 1px rgba(46,230,197,.4),0 0 16px rgba(46,230,197,.3);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  background:var(--bg-1);
}
.brand-text{font-size:16px;font-weight:700;white-space:nowrap;}
.nav-group{display:flex;flex-direction:column;gap:6px;}
.nav-label{font-size:12px;color:var(--text-3);padding:0 12px 6px;letter-spacing:.08em;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:12px;font-size:14px;color:var(--text-2);
  transition:background-color .2s ease-out,color .2s ease-out,padding-left .2s ease-out;
}
.nav-item i{width:20px;font-size:16px;text-align:center;color:var(--text-3);transition:color .2s ease-out;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.nav-item:hover i{color:var(--text-1);}
.nav-item.active{background:rgba(46,230,197,.10);color:var(--text-1);padding-left:14px;}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;
  background:var(--brand);border-radius:2px;box-shadow:0 0 12px rgba(46,230,197,.6);
}
.nav-item.active i{color:var(--brand);}
.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.sidebar-note{font-size:12px;color:var(--text-3);line-height:1.7;}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);
  z-index:55;opacity:0;transition:opacity .2s ease-out;
}
.drawer-mask.show{display:block;opacity:1;}
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.topbar{
  display:none;position:sticky;top:0;z-index:50;
  align-items:center;justify-content:space-between;gap:16px;
  padding:12px 20px;background:rgba(10,20,36,.92);
  border-bottom:1px solid var(--line);backdrop-filter:blur(14px);
}
.topbar .brand-text{font-size:15px;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;display:inline-flex;
  align-items:center;justify-content:center;color:var(--text-1);
  border:1px solid var(--line);background:var(--panel);transition:all .2s ease-out;
}
.icon-btn:hover{border-color:rgba(46,230,197,.45);color:var(--brand);}

/* ---------- Container & sections ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;}
.section{padding:96px 0;position:relative;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;flex-wrap:wrap;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;
  color:var(--brand);letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--brand);}
h2{font-size:36px;margin-bottom:16px;}
h3{font-size:22px;}
.section-head h2{margin-bottom:8px;}
.section-desc{max-width:72ch;color:var(--text-2);font-size:16px;}
.divider{height:1px;background:var(--line);border:0;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:all .2s ease-out;white-space:nowrap;border:1px solid transparent;
}
.btn-primary{background:var(--brand);color:#04201B;box-shadow:var(--glow);}
.btn-primary:hover{background:#41EBD0;color:#04201B;box-shadow:0 0 0 1px rgba(46,230,197,.45),0 0 28px rgba(46,230,197,.34);transform:translateY(-1px);}
.btn-primary:active{background:var(--brand-press);transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--panel-line);color:var(--text-1);}
.btn-ghost:hover{background:rgba(46,230,197,.12);border-color:rgba(46,230,197,.45);color:var(--text-1);}
.btn-ghost:active{transform:translateY(1px);}
.btn-mini{height:36px;padding:0 16px;font-size:13px;border-radius:10px;}
.link-more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{color:var(--brand);text-decoration:underline;text-underline-offset:2px;}
.link-more i{transition:transform .2s ease-out;}
.link-more:hover i{transform:translateX(4px);}

/* ---------- Badges & tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;letter-spacing:.02em;
  color:var(--accent);background:rgba(255,184,77,.10);border:1px solid rgba(255,184,77,.28);
}
.badge-brand{color:var(--brand);background:rgba(46,230,197,.10);border-color:rgba(46,230,197,.30);}
.tag-strip{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--panel-line);
  background:rgba(255,255,255,.03);transition:all .2s ease-out;
}
.tag:hover{color:var(--text-1);border-color:rgba(46,230,197,.45);background:rgba(46,230,197,.08);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(rgba(6,11,20,.72),rgba(6,11,20,.72)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(6,11,20,.1) 0%,rgba(6,11,20,.55) 60%,var(--bg-0) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.03;
  background-image:linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;
  gap:64px;align-items:center;padding:96px 0 64px;
}
.hero h1{font-size:56px;line-height:1.18;margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:18px;color:var(--text-1);font-weight:500;margin-bottom:12px;}
.hero-note{font-size:15px;color:var(--text-2);max-width:52ch;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-visual{position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--panel-line);box-shadow:var(--shadow);}
.hero-visual img{width:100%;height:420px;object-fit:cover;opacity:.9;}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,20,.15),rgba(6,11,20,.82));}
.glass-stats{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:3;
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  padding:18px;border-radius:var(--r-card);
  background:rgba(10,20,36,.62);border:1px solid var(--panel-line);backdrop-filter:blur(14px);
}
.glass-stats .stat-num{font-size:28px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2;}
.glass-stats .stat-txt{font-size:12px;color:var(--text-3);line-height:1.6;}
.hero-tags{position:relative;z-index:2;padding:0 0 56px;}
.hero-tags .tag-line{font-size:13px;color:var(--text-3);margin-bottom:14px;}

/* ---------- Pain points (01/02/03) ---------- */
.pain-list{border-top:1px solid var(--line);}
.pain-item{
  display:grid;grid-template-columns:88px 260px 1fr;gap:24px;align-items:baseline;
  padding:28px 0;border-bottom:1px solid var(--line);transition:background-color .2s ease-out;
}
.pain-item:hover{background:rgba(255,255,255,.02);}
.pain-num{font-size:28px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1;}
.pain-item h3{font-size:18px;font-weight:600;}
.pain-item p{font-size:15px;margin:0;}

/* ---------- Solution ---------- */
.solution-grid{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:start;}
.sticky-col{position:sticky;top:96px;}
.sticky-col h2{font-size:28px;}
.sticky-col p{font-size:15px;margin-top:12px;}
.panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
.panel{
  background:var(--panel);border:1px solid var(--panel-line);border-radius:var(--r-card);
  backdrop-filter:blur(14px);padding:28px;transition:all .2s ease-out;
}
.panel:hover{border-color:rgba(46,230,197,.35);box-shadow:var(--glow);transform:translateY(-2px);}
.panel .panel-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(46,230,197,.10);border:1px solid rgba(46,230,197,.28);
  color:var(--brand);font-size:18px;margin-bottom:18px;
}
.panel h3{font-size:20px;margin-bottom:10px;}
.panel p{font-size:15px;margin-bottom:8px;}
.panel-media{border-radius:12px;overflow:hidden;margin-bottom:18px;border:1px solid var(--line);}
.panel-media img{width:100%;height:150px;object-fit:cover;}
.panel-tall{padding:32px 28px 36px;}
.panel-offset{margin-top:32px;}

/* ---------- Stats bar ---------- */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--panel-line);border-radius:var(--r-panel);
  background:var(--panel);backdrop-filter:blur(14px);overflow:hidden;
}
.stats-cell{padding:36px 28px;border-right:1px solid var(--line);}
.stats-cell:last-child{border-right:0;}
.stats-cell .num{font-size:40px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.1;}
.stats-cell .num span{font-size:16px;margin-left:4px;color:var(--text-2);font-weight:500;}
.stats-cell .cap{font-size:14px;color:var(--text-2);margin-top:8px;}
.stats-foot{margin-top:20px;font-size:13px;color:var(--text-3);}

/* ---------- Quote ---------- */
.quote-wrap{padding:0 120px;text-align:center;}
.quote-text{font-size:28px;line-height:1.6;color:var(--text-1);font-weight:600;margin-bottom:32px;}
.quote-person{display:inline-flex;align-items:center;gap:14px;}
.avatar{
  width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(46,230,197,.35),rgba(255,184,77,.28));
  border:1px solid var(--panel-line);font-size:16px;font-weight:700;color:var(--text-1);
}
.quote-person .who{text-align:left;font-size:14px;color:var(--text-1);line-height:1.5;}
.quote-person .who small{display:block;color:var(--text-3);font-size:13px;}
.logo-row{display:flex;justify-content:center;gap:48px;margin-top:48px;flex-wrap:wrap;}
.logo-slot{
  font-size:14px;color:var(--text-3);opacity:.55;letter-spacing:.06em;
  padding:10px 22px;border:1px solid var(--line);border-radius:10px;
  transition:opacity .2s ease-out,color .2s ease-out;
}
.logo-slot:hover{opacity:1;color:var(--text-2);}

/* ---------- News list (CMS) ---------- */
.news-list{border-top:1px solid var(--line);}
.news-row{
  display:grid;grid-template-columns:96px 1fr 180px;gap:24px;align-items:start;
  padding:26px 24px;border-bottom:1px solid var(--line);border-left:2px solid transparent;
  border-radius:0 var(--r-card) var(--r-card) 0;transition:all .2s ease-out;
}
.news-row:hover{background:rgba(255,255,255,.03);border-left-color:var(--brand);transform:translateY(-2px);}
.news-title{font-size:18px;font-weight:600;margin-bottom:8px;}
.news-title a{color:var(--text-1);}
.news-title a:hover{color:var(--brand);}
.news-sum{font-size:14px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{text-align:right;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-meta i{margin-right:6px;color:var(--accent);}
.news-arrow{display:none;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:72px 24px;text-align:center;border:1px dashed var(--line);border-radius:var(--r-panel);
  background:rgba(255,255,255,.02);
}
.empty-state i{font-size:40px;color:var(--text-3);}
.empty-state p{font-size:15px;color:var(--text-2);margin:0;}

/* ---------- FAQ ---------- */
.faq-panel{
  background:var(--panel);border:1px solid var(--panel-line);border-radius:var(--r-panel);
  backdrop-filter:blur(14px);padding:8px 28px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;min-height:48px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;text-align:left;font-size:17px;font-weight:600;color:var(--text-1);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--brand);}
.faq-q .sign{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  color:var(--brand);border:1px solid rgba(46,230,197,.35);
  transition:transform .2s ease-out,background-color .2s ease-out;
}
.faq-item.open .faq-q .sign{transform:rotate(45deg);background:rgba(46,230,197,.12);}
.faq-a{display:none;padding:0 0 22px;font-size:15px;color:var(--text-2);max-width:72ch;}
.faq-item.open .faq-a{display:block;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  background-image:linear-gradient(rgba(6,11,20,.82),rgba(6,11,20,.82)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  border:1px solid var(--panel-line);padding:56px;backdrop-filter:blur(14px);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;opacity:.04;
  background-image:linear-gradient(rgba(255,255,255,.8) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.8) 1px,transparent 1px);
  background-size:48px 48px;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.cta-inner h2{font-size:32px;}
.cta-inner p{font-size:15px;max-width:48ch;}
.form{display:grid;gap:16px;}
.field{display:grid;gap:8px;}
.field label{font-size:13px;color:var(--text-2);}
.field input{
  height:48px;border-radius:12px;padding:0 16px;font-size:15px;
  background:var(--panel);border:1px solid var(--line);color:var(--text-1);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field input::placeholder{color:var(--text-3);}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(46,230,197,.28);}
.field.error input{border-color:var(--error);}
.field .err-msg{font-size:13px;color:var(--error);display:none;}
.field.error .err-msg{display:block;}
.form-msg{font-size:14px;color:var(--ok);min-height:22px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:48px;padding:64px 0 40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;max-width:34ch;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;display:inline-block;transition:transform .2s ease-out,color .2s ease-out;}
.footer-col a:hover{color:var(--text-1);transform:translateX(2px);text-decoration:underline;text-underline-offset:2px;}
.footer-contact li{font-size:14px;color:var(--text-2);display:flex;gap:10px;align-items:flex-start;}
.footer-contact i{color:var(--brand);margin-top:6px;font-size:14px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (min-width:1600px){
  .container{max-width:1400px;}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--sidebar-w:88px;}
  .sidebar{padding:24px 12px;align-items:stretch;}
  .brand{justify-content:center;}
  .brand-text{display:none;}
  .nav-label{display:none;}
  .nav-item{justify-content:center;padding:0;gap:0;}
  .nav-item.active{padding-left:0;}
  .nav-item i{font-size:18px;}
  .nav-item span{
    position:absolute;left:72px;top:50%;transform:translateY(-50%);
    background:var(--bg-1);border:1px solid var(--panel-line);border-radius:8px;
    padding:6px 12px;font-size:13px;white-space:nowrap;color:var(--text-1);
    opacity:0;pointer-events:none;transition:opacity .2s ease-out;z-index:5;
  }
  .nav-item:hover span{opacity:1;}
  .sidebar-foot .btn span{display:none;}
  .sidebar-note{display:none;}
}
@media (max-width:1023px){
  .sidebar{
    width:280px;transform:translateX(-100%);padding:24px 20px;
    box-shadow:var(--shadow);
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar .brand-text{display:inline;}
  .sidebar .nav-label{display:block;}
  .nav-item{justify-content:flex-start;gap:12px;padding:0 12px;}
  .nav-item.active{padding-left:14px;}
  .nav-item span{
    position:static;opacity:1;background:none;border:0;padding:0;
    transform:none;color:inherit;font-size:14px;
  }
  .sidebar-note{display:block;}
  .main{margin-left:0;}
  .topbar{display:flex;}
  .container{padding:0 24px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:56px 0 40px;}
  .hero h1{font-size:40px;}
  .solution-grid{grid-template-columns:1fr;gap:32px;}
  .sticky-col{position:static;}
  .quote-wrap{padding:0 24px;}
  .quote-text{font-size:22px;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .cta-panel{padding:40px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .pain-item{grid-template-columns:64px 1fr;gap:8px 20px;}
  .pain-item p{grid-column:2;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  h2{font-size:26px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:16px;}
  .hero-visual img{height:280px;}
  .glass-stats{grid-template-columns:1fr;gap:10px;left:14px;right:14px;bottom:14px;padding:14px;}
  .glass-stats .stat-num{font-size:22px;}
  .panel-grid{grid-template-columns:1fr;}
  .panel-offset{margin-top:0;}
  .stats-bar{grid-template-columns:1fr 1fr;}
  .stats-cell{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px 20px;}
  .stats-cell:nth-child(2n){border-right:0;}
  .stats-cell:nth-child(n+3){border-bottom:0;}
  .stats-cell .num{font-size:30px;}
  .news-row{grid-template-columns:1fr;gap:10px;padding:22px 16px;}
  .news-meta{text-align:left;}
  .faq-panel{padding:4px 20px;}
  .faq-q{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .container{padding:0 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1424;
  --panel:rgba(255,255,255,.055);
  --panel-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --brand:#2EE6C5;
  --brand-press:#1BC7AA;
  --accent:#FFB84D;
  --text-1:#E8F0F7;
  --text-2:#A7B7C8;
  --text-3:#6E8299;
  --ok:#3DDC97;
  --warn:#FFB84D;
  --error:#FF6B6B;
  --radius-btn:12px;
  --radius-card:16px;
  --radius-panel:20px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(46,230,197,.35),0 0 24px rgba(46,230,197,.26);
  --ease:200ms ease-out;
  --side-w:260px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.3;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:rgba(46,230,197,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070d18}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(46,230,197,.35)}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background var(--ease),box-shadow var(--ease),transform var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04201B;box-shadow:0 0 0 1px rgba(46,230,197,.35),0 0 24px rgba(46,230,197,.26)}
.btn-primary:hover{background:#41ebcc;box-shadow:0 0 0 1px rgba(46,230,197,.45),0 0 28px rgba(46,230,197,.34);transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-press);transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.btn-outline:hover{background:rgba(46,230,197,.12);border-color:rgba(46,230,197,.45);color:var(--text-1)}
.btn-ghost{background:transparent;color:var(--brand);padding:0 14px;height:40px;border-radius:10px}
.btn-ghost:hover{background:rgba(46,230,197,.12)}
.btn-block{width:100%}

/* ===== 侧边导航 ===== */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:rgba(10,20,36,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 20px;
}
.mobile-bar .brand-text{font-size:15px}
.menu-toggle{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);
  background:var(--panel);color:var(--text-1);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background var(--ease),border-color var(--ease)
}
.menu-toggle:hover{background:rgba(46,230,197,.14);border-color:rgba(46,230,197,.4)}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);z-index:80;
  background:var(--bg-1);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:24px 16px 20px;
  overflow-y:auto;
}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 4px 24px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:24px;height:24px;border-radius:8px;flex:0 0 24px;
  background:linear-gradient(135deg,#2EE6C5,#1BC7AA);
  box-shadow:0 0 18px rgba(46,230,197,.45);
}
.brand-text{color:var(--text-1);font-size:16px;font-weight:700;letter-spacing:.4px}
.drawer-close{
  display:none;width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--text-2);cursor:pointer
}
.drawer-close:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-group{display:flex;flex-direction:column;gap:4px}
.nav-label{font-size:12px;color:var(--text-3);letter-spacing:2px;padding:8px 12px 6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:10px;color:var(--text-2);font-size:14px;
  transition:background var(--ease),color var(--ease)
}
.nav-item i{width:20px;text-align:center;font-size:15px}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-item.active{background:rgba(46,230,197,.10);color:var(--text-1)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:2px;border-radius:2px;background:var(--brand);
}
.sidebar-foot{margin-top:auto;padding-top:24px}
.side-note{font-size:12px;color:var(--text-3);text-align:center;margin-top:10px}

/* ===== 主内容 ===== */
.main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column}
.overlay{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:75;
  opacity:0;transition:opacity var(--ease)
}
.overlay.show{display:block;opacity:1}

/* ===== 面包屑 ===== */
.breadcrumb{padding:36px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumbs li{display:inline-flex;align-items:center;gap:8px;min-width:0}
.crumbs li+li::before{content:"/";color:rgba(255,255,255,.18)}
.crumbs a{color:var(--text-3);transition:color var(--ease)}
.crumbs a:hover{color:var(--brand)}
.crumbs .current{color:var(--text-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== 文章头 ===== */
.article-hero{padding:24px 0 0}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.4px;
  color:var(--accent);background:rgba(255,184,77,.12);border:1px solid rgba(255,184,77,.28);
}
.badge-brand{color:var(--brand);background:rgba(46,230,197,.12);border-color:rgba(46,230,197,.3)}
.article-hero h1{
  font-size:40px;line-height:1.32;margin:18px 0 0;max-width:22em;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:20px;
  font-size:13px;color:var(--text-3);
}
.meta-row i{color:var(--text-3);margin-right:6px}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.18)}
.cover-frame{
  position:relative;margin:32px 0 8px;border-radius:var(--radius-panel);overflow:hidden;
  aspect-ratio:16/9;background:#0f1a2b;border:1px solid var(--line);
}
.cover-frame img{width:100%;height:100%;object-fit:cover}
.cover-fallback{
  position:absolute;inset:0;display:none;align-items:center;justify-content:center;
  background:#0f1a2b;color:var(--text-3);font-size:14px
}
.cover-frame.img-fail .cover-fallback{display:flex}

/* ===== 正文 ===== */
.article-layout{padding:48px 0 96px}
.article-body{max-width:72ch;font-size:17px;line-height:1.85;color:var(--text-2)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:28px;color:var(--text-1);margin:48px 0 16px;padding-left:16px;
  border-left:3px solid var(--brand);line-height:1.35;
}
.article-body h3{font-size:24px;color:var(--text-1);margin:36px 0 14px}
.article-body h4{font-size:18px;color:var(--text-1);margin:28px 0 12px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px;line-height:1.8}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0}
.article-body li::marker{color:var(--brand)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(46,230,197,.35);transition:border-color var(--ease)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body strong{color:var(--text-1)}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;border-left:3px solid var(--brand);
  background:var(--panel);border-radius:12px;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;width:100%;height:auto;margin:24px 0 8px;background:#0f1a2b}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;color:var(--text-2)}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--panel);color:var(--text-1);font-weight:600}
.article-body tbody tr{transition:background var(--ease)}
.article-body tbody tr:hover{background:rgba(255,255,255,.04)}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
  background:rgba(255,255,255,.07);padding:2px 6px;border-radius:6px;color:var(--text-1)
}
.article-body pre{
  background:#0b1526;border:1px solid var(--line);border-radius:12px;padding:18px;
  overflow-x:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;line-height:1.7;color:var(--text-2);margin:24px 0
}
.article-body pre code{background:none;padding:0}

/* 空态 */
.empty-state{
  max-width:72ch;padding:64px 32px;text-align:center;border-radius:var(--radius-panel);
  background:var(--panel);border:1px solid var(--line);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:20px;display:flex;align-items:center;justify-content:center;
  background:rgba(46,230,197,.10);color:var(--brand);font-size:26px
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:24px}

/* ===== 标签与分享 ===== */
.meta-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  margin-top:40px;padding-top:24px;border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);background:var(--panel);border:1px solid var(--line);
  transition:color var(--ease),border-color var(--ease),background var(--ease)
}
.tag:hover{color:var(--brand);border-color:rgba(46,230,197,.35);background:rgba(46,230,197,.08)}
.share-group{display:flex;align-items:center;gap:10px}
.share-group span{font-size:13px;color:var(--text-3)}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line-strong);
  background:var(--panel);color:var(--text-2);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:color var(--ease),border-color var(--ease),background var(--ease),transform var(--ease)
}
.icon-btn:hover{color:var(--brand);border-color:rgba(46,230,197,.4);background:rgba(46,230,197,.1);transform:translateY(-2px)}

/* ===== 相关推荐 ===== */
.section{padding:64px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:28px}
.section-head .more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;transition:gap var(--ease)}
.section-head .more:hover{gap:10px}
.post-list{display:flex;flex-direction:column}
.post-row{
  position:relative;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  padding:22px 24px;border-radius:var(--radius-card);background:var(--panel);
  border:1px solid var(--line);border-left:2px solid transparent;margin-bottom:14px;
  transition:border-color var(--ease),background var(--ease),transform var(--ease),box-shadow var(--ease)
}
.post-row:hover{border-left-color:var(--brand);background:var(--panel-strong);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.post-row h3{font-size:18px;margin:12px 0 8px}
.post-row h3 a{transition:color var(--ease)}
.post-row:hover h3 a{color:var(--brand)}
.post-row p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-row .post-side{display:flex;align-items:center;gap:16px;font-size:12px;color:var(--text-3);white-space:nowrap}
.post-row .arrow{color:var(--text-3);transition:transform var(--ease),color var(--ease)}
.post-row:hover .arrow{transform:translateX(4px);color:var(--brand)}

/* ===== 返回入口 ===== */
.return-row{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  margin-top:40px;padding-top:28px;border-top:1px solid var(--line)
}
.text-links{display:flex;flex-wrap:wrap;gap:20px;font-size:14px;color:var(--text-2)}
.text-links a{display:inline-flex;align-items:center;gap:6px;transition:color var(--ease),transform var(--ease)}
.text-links a:hover{color:var(--brand);transform:translateX(2px)}

/* ===== 末尾 CTA ===== */
.cta-panel{
  position:relative;margin:80px 0 0;padding:56px 48px;border-radius:var(--radius-panel);
  background:var(--panel);border:1px solid var(--line);overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;pointer-events:none;
}
.cta-panel > *{position:relative;z-index:1}
.cta-panel h2{font-size:28px;margin-bottom:10px}
.cta-panel p{font-size:15px;color:var(--text-2);max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ===== 页脚 ===== */
.site-footer{margin-top:96px;background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{font-size:14px;color:var(--text-3);margin-top:16px;max-width:34ch}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color var(--ease),transform var(--ease)}
.footer-col a:hover{color:var(--text-1);transform:translateX(2px)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2)}
.footer-contact i{color:var(--brand);margin-top:5px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-3)
}

/* ===== 响应式 ===== */
@media (min-width:1600px){
  .container{max-width:1400px}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--side-w:88px}
  .sidebar{padding:24px 12px;overflow:visible}
  .brand-text,.nav-label,.nav-item span,.side-note{display:none}
  .sidebar-head{justify-content:center;padding:0 0 24px}
  .nav-item{justify-content:center;padding:0}
  .nav-item span{
    position:absolute;left:74px;display:block;white-space:nowrap;
    background:var(--bg-1);border:1px solid var(--line-strong);color:var(--text-1);
    padding:6px 12px;border-radius:8px;font-size:13px;
    opacity:0;pointer-events:none;transition:opacity var(--ease)
  }
  .nav-item:hover span{opacity:1;display:block}
  .nav-item.active::before{left:-12px}
  .sidebar-foot .btn{padding:0;font-size:0;height:44px}
  .sidebar-foot .btn i{font-size:16px}
}
@media (max-width:1023px){
  :root{--side-w:280px}
  .mobile-bar{display:flex}
  .sidebar{transform:translateX(-100%);transition:transform var(--ease);box-shadow:var(--shadow-1)}
  .sidebar.open{transform:translateX(0)}
  .drawer-close{display:inline-flex;align-items:center;justify-content:center}
  .main{margin-left:0;padding-top:64px}
  .container{padding:0 20px}
  .article-hero h1{font-size:32px}
  .article-hero h1{max-width:none}
  .cover-frame{aspect-ratio:16/10;border-radius:16px}
  .post-row{grid-template-columns:1fr;gap:14px}
  .post-row .post-side{justify-content:flex-start}
  .cta-panel{padding:40px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  body{font-size:15px}
  .container{padding:0 20px}
  .breadcrumb{padding-top:24px}
  .crumbs .current{max-width:180px}
  .article-hero h1{font-size:30px;line-height:1.35}
  .cover-frame{aspect-ratio:4/3}
  .article-layout{padding:32px 0 64px}
  .article-body{font-size:16px}
  .article-body h2{font-size:22px;margin-top:36px}
  .article-body h3{font-size:20px}
  .section{padding-top:48px}
  .section-head h2{font-size:22px}
  .cta-panel{padding:32px 22px;border-radius:16px}
  .cta-panel h2{font-size:22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:64px;padding-top:48px}
  .return-row{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1424;
  --panel:rgba(255,255,255,.055);
  --panel-strong:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.10);
  --brand:#2EE6C5;
  --brand-press:#1BC7AA;
  --accent:#FFB84D;
  --text-1:#E8F0F7;
  --text-2:#A7B7C8;
  --text-3:#6E8299;
  --ok:#3DDC97;
  --error:#FF6B6B;
  --radius-btn:12px;
  --radius-card:16px;
  --radius-panel:20px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(46,230,197,.35),0 0 24px rgba(46,230,197,.26);
  --sidebar-w:260px;
  --ease:200ms ease-out;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- App shell ---------- */
.app{min-height:100vh}

.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--bg-1);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:24px;
  padding:24px 16px;
  overflow-y:auto;
  z-index:60;
  transition:transform var(--ease);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 10px;
}
.brand-mark{
  width:24px;height:24px;
  flex:0 0 24px;
  border-radius:8px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-press) 55%,rgba(46,230,197,.25) 100%);
  box-shadow:0 0 18px rgba(46,230,197,.35);
}
.brand-text{
  font-size:16px;
  font-weight:700;
  white-space:nowrap;
}
.sidebar-head{padding-bottom:8px;border-bottom:1px solid var(--line)}

.nav-group{display:flex;flex-direction:column;gap:6px}
.nav-label{
  font-size:12px;
  color:var(--text-3);
  padding:0 14px 6px;
  letter-spacing:1px;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 14px;
  border-radius:12px;
  color:var(--text-2);
  font-size:14px;
  transition:background var(--ease),color var(--ease);
}
.nav-item i{width:20px;text-align:center;font-size:16px}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-item.active{
  background:rgba(46,230,197,.10);
  color:var(--text-1);
  font-weight:600;
}
.nav-item.active::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:2px;border-radius:2px;
  background:var(--brand);
}

.sidebar-foot{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:16px 10px 4px;
  border-top:1px solid var(--line);
}
.sidebar-foot p{
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}

.main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

/* ---------- Topbar / drawer (mobile) ---------- */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:64px;
  align-items:center;
  gap:12px;
  padding:0 16px;
  background:rgba(10,20,36,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  z-index:70;
}
.menu-btn{
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  border:1px solid var(--line-strong);
  color:var(--text-1);
  transition:background var(--ease);
}
.menu-btn:hover{background:rgba(255,255,255,.06)}
.topbar .brand{padding:0;flex:1}
.topbar .brand-text{font-size:15px}

.overlay{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.6);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
  z-index:55;
}
.overlay.show{opacity:1;visibility:visible}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:background var(--ease),box-shadow var(--ease),transform var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{
  background:var(--brand);
  color:#04211C;
  box-shadow:0 0 0 1px rgba(46,230,197,.35),0 0 24px rgba(46,230,197,.26);
}
.btn-primary:hover{
  background:#4FEFD1;
  box-shadow:0 0 0 1px rgba(46,230,197,.45),0 0 28px rgba(46,230,197,.34);
}
.btn-primary:active{transform:translateY(1px);background:var(--brand-press)}
.btn-ghost{
  background:transparent;
  border:1px solid rgba(255,255,255,.18);
  color:var(--text-1);
}
.btn-ghost:hover{background:rgba(46,230,197,.12);border-color:rgba(46,230,197,.45)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}

.link-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  transition:gap var(--ease),color var(--ease);
}
.link-ghost:hover{gap:12px;color:#5FF0D6}
.link-ghost:focus-visible{outline-offset:4px}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
  padding:24px 0 0;
}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.18)}
.breadcrumb a{transition:color var(--ease)}
.breadcrumb a:hover{color:var(--text-1)}
.breadcrumb [aria-current]{color:var(--text-2)}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;
  padding:40px 0 88px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:rgba(6,11,20,.78);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,.25) 0%,rgba(6,11,20,.62) 60%,var(--bg-0) 100%);
}
.page-hero .grid-texture{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:1px;
  color:var(--brand);
  padding:6px 14px;
  border:1px solid rgba(46,230,197,.35);
  border-radius:999px;
  background:rgba(46,230,197,.08);
}
.page-hero h1{
  font-size:56px;
  font-weight:700;
  margin:20px 0 16px;
  max-width:22ch;
}
.lede{
  font-size:18px;
  color:var(--text-2);
  max-width:62ch;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:48px;
  margin-top:36px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.hero-stat strong{
  display:block;
  font-size:36px;
  font-weight:700;
  color:var(--brand);
  line-height:1.2;
}
.hero-stat span{
  font-size:13px;
  color:var(--text-3);
}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
  flex-wrap:wrap;
}
.section-head h2{font-size:36px;margin-top:14px}
.section-note{
  font-size:15px;
  color:var(--text-2);
  max-width:44ch;
}

/* ---------- Split blocks ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.split+.split{margin-top:96px}
.split.reverse .split-media{order:2}
.split-media{
  position:relative;
  border-radius:var(--radius-panel);
  overflow:hidden;
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.01));
  box-shadow:var(--shadow);
}
.split-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.split-body h2{font-size:36px;margin-bottom:16px}
.split-body p{color:var(--text-2);font-size:16px}
.split-body .dot-list{margin-top:24px;display:flex;flex-direction:column;gap:16px}
.dot-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  color:var(--text-2);
}
.dot-list li i{
  color:var(--brand);
  font-size:14px;
  margin-top:8px;
}
.dot-list li strong{color:var(--text-1);font-weight:600}

.step-list{margin-top:24px;display:flex;flex-direction:column;gap:8px;counter-reset:step}
.step-list li{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:16px;
  border-radius:var(--radius-card);
  background:var(--panel);
  border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease);
}
.step-list li:hover{border-color:rgba(46,230,197,.4);transform:translateY(-2px)}
.step-index{
  flex:0 0 32px;
  height:32px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,184,77,.14);
  color:var(--accent);
  font-size:13px;
  font-weight:700;
}
.step-list h4{font-size:15px;margin-bottom:4px}
.step-list p{font-size:14px;color:var(--text-3);line-height:1.7}

/* ---------- Cards ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.gcard{
  border-radius:var(--radius-card);
  background:var(--panel);
  border:1px solid var(--line-strong);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  backdrop-filter:blur(14px);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.gcard:hover{
  transform:translateY(-2px);
  border-color:rgba(46,230,197,.45);
  box-shadow:0 0 0 1px rgba(46,230,197,.25),0 8px 24px rgba(0,0,0,.35);
}
.gcard-media{
  position:relative;
  aspect-ratio:16/9;
  background:#101B2C;
  overflow:hidden;
}
.gcard-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform var(--ease);
}
.gcard:hover .gcard-media img{transform:scale(1.03)}
.gcard-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,0) 30%,rgba(6,11,20,.72) 100%);
}
.gcard-title{
  position:absolute;
  left:16px;right:16px;bottom:12px;
  font-size:18px;
  font-weight:600;
  color:var(--text-1);
}
.gcard-body{
  padding:18px 16px 20px;
  display:flex;
  flex-direction:column;
  gap:14px;
  flex:1;
}
.gcard-body p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
  flex:1;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  background:rgba(255,184,77,.14);
  color:var(--accent);
  border:1px solid rgba(255,184,77,.28);
  margin-bottom:10px;
}

/* ---------- FAQ ---------- */
.faq-panel{
  border-radius:var(--radius-panel);
  background:var(--panel);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(14px);
  padding:8px 28px;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  min-height:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 0;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 24px;
  width:24px;height:24px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid rgba(46,230,197,.4);
  color:var(--brand);
  font-size:12px;
  transition:transform var(--ease),background var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:rgba(46,230,197,.14)}
.faq-answer{
  padding:0 0 20px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
  max-width:72ch;
}

/* ---------- CTA ---------- */
.cta-section{padding:96px 0}
.cta-panel{
  position:relative;
  border-radius:var(--radius-panel);
  border:1px solid var(--line-strong);
  background:linear-gradient(150deg,rgba(46,230,197,.10) 0%,rgba(255,255,255,.05) 42%,rgba(255,255,255,.02) 100%);
  backdrop-filter:blur(14px);
  padding:56px;
  overflow:hidden;
}
.cta-panel .grid-texture{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:56px;
  align-items:center;
}
.cta-inner h2{font-size:36px;margin-bottom:16px}
.cta-inner p{color:var(--text-2);font-size:16px;max-width:46ch}
.cta-form{
  display:grid;
  gap:16px;
  padding:28px;
  border-radius:var(--radius-card);
  background:rgba(6,11,20,.5);
  border:1px solid var(--line-strong);
}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:var(--text-2)}
.field input{
  height:48px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  background:var(--panel);
  border:1px solid var(--line-strong);
  color:var(--text-1);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{
  outline:none;
  border-color:rgba(46,230,197,.6);
  box-shadow:0 0 0 2px rgba(46,230,197,.28);
}
.form-tip{
  font-size:13px;
  color:var(--ok);
  min-height:20px;
}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:auto;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:48px;
}
.footer-brand .brand{padding:0;margin-bottom:16px}
.footer-brand p{
  font-size:14px;
  color:var(--text-3);
  line-height:1.8;
  max-width:34ch;
}
.footer-col h4{
  font-size:14px;
  color:var(--text-1);
  margin-bottom:16px;
  letter-spacing:.5px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li a,
.footer-col li span{
  font-size:14px;
  color:var(--text-3);
  transition:color var(--ease),transform var(--ease);
  display:inline-block;
}
.footer-col li a:hover{color:var(--text-1);transform:translateX(2px)}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:var(--text-3);
}
.footer-contact i{margin-top:6px;color:var(--brand);font-size:13px}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid var(--line);
  padding:20px 0;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:var(--text-3);
}

/* ---------- Compact sidebar ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--sidebar-w:88px}
  .sidebar{padding:24px 12px;overflow:visible;align-items:center}
  .brand-text{display:none}
  .brand{justify-content:center;padding:6px 0}
  .nav-label{display:none}
  .nav-group{width:100%}
  .nav-item{justify-content:center;padding:0}
  .nav-item span{
    position:absolute;
    left:calc(100% + 14px);
    top:50%;
    transform:translateY(-50%) translateX(-4px);
    background:#0F1D30;
    border:1px solid var(--line-strong);
    padding:6px 12px;
    border-radius:10px;
    font-size:13px;
    color:var(--text-1);
    white-space:nowrap;
    opacity:0;
    pointer-events:none;
    transition:opacity var(--ease),transform var(--ease);
    z-index:5;
  }
  .nav-item:hover span{opacity:1;transform:translateY(-50%) translateX(0)}
  .sidebar-foot{padding:16px 0 4px;align-items:center}
  .sidebar-foot p{display:none}
  .sidebar-foot .btn{padding:0 12px;font-size:13px}
}

/* ---------- Tablet / mobile ---------- */
@media (max-width:1023px){
  .sidebar{
    width:280px;
    transform:translateX(-100%);
    box-shadow:0 0 40px rgba(0,0,0,.6);
    z-index:80;
  }
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0;padding-top:64px}
  .topbar{display:flex}
  .container{padding:0 24px}
  .page-hero{padding:32px 0 64px}
  .page-hero h1{font-size:36px}
  .section{padding:64px 0}
  .section-head h2{font-size:28px}
  .split{grid-template-columns:1fr;gap:32px}
  .split+.split{margin-top:64px}
  .split.reverse .split-media{order:0}
  .split-body h2{font-size:28px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .cta-panel{padding:32px}
  .cta-inner h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .hero-meta{gap:32px;margin-top:28px}
  .hero-stat strong{font-size:28px}
}

@media (max-width:640px){
  .container{padding:0 20px}
  .page-hero h1{font-size:32px}
  .lede{font-size:16px}
  .section{padding:56px 0}
  .cta-section{padding:56px 0}
  .card-grid{grid-template-columns:1fr}
  .faq-panel{padding:4px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .btn{height:46px;font-size:14px;padding:0 20px}
  .hero-meta{gap:24px}
}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1424;
  --panel:rgba(255,255,255,.055);
  --panel-2:rgba(255,255,255,.035);
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.10);
  --brand:#2EE6C5;
  --brand-press:#1BC7AA;
  --accent:#FFB84D;
  --text-1:#E8F0F7;
  --text-2:#A7B7C8;
  --text-3:#6E8299;
  --ok:#3DDC97;
  --error:#FF6B6B;
  --r-s:12px;
  --r-m:16px;
  --r-l:20px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(46,230,197,.35),0 0 24px rgba(46,230,197,.26);
  --shell-w:260px;
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease)}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(46,230,197,.28);color:#04121A}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
body::-webkit-scrollbar{width:10px;height:10px}
body::-webkit-scrollbar-track{background:#050A12}
body::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:8px}
body::-webkit-scrollbar-thumb:hover{background:rgba(46,230,197,.4)}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand);color:#04121A;padding:10px 16px;border-radius:0 0 var(--r-s) 0;font-size:14px;font-weight:600;
}
.skip-link:focus{left:0}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
}

/* ============ 顶部移动栏 ============ */
.topbar{
  display:none;
  position:sticky;top:0;z-index:90;
  align-items:center;justify-content:space-between;
  gap:16px;
  height:64px;
  padding:0 20px;
  background:rgba(10,20,36,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar .brand{gap:10px}
.menu-btn{
  width:40px;height:40px;border-radius:var(--r-s);
  border:1px solid var(--line-2);
  background:var(--panel);
  color:var(--text-1);
  display:grid;place-items:center;cursor:pointer;
  transition:background var(--ease),border-color var(--ease);
}
.menu-btn:hover{background:rgba(46,230,197,.12);border-color:rgba(46,230,197,.35)}

/* ============ 品牌字标 ============ */
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:24px;height:24px;flex:none;border-radius:8px;
  background:linear-gradient(135deg,var(--brand) 0%,#0E8E7C 100%);
  box-shadow:0 0 0 1px rgba(46,230,197,.35),0 0 18px rgba(46,230,197,.28);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  background:var(--bg-0);
}
.brand-text{
  font-size:17px;font-weight:700;color:var(--text-1);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* ============ 左侧 App Shell ============ */
.app-shell{
  position:fixed;top:0;left:0;z-index:100;
  width:var(--shell-w);height:100vh;
  display:flex;flex-direction:column;
  padding:24px 18px 20px;
  background:var(--bg-1);
  border-right:1px solid var(--line);
  overflow-y:auto;
  transition:transform var(--ease);
}
.app-shell .brand{padding:0 8px 20px;border-bottom:1px solid var(--line);margin-bottom:20px}
.nav-label{
  display:block;
  font-size:12px;color:var(--text-3);
  letter-spacing:.08em;
  padding:0 10px 10px;
}
.nav-group{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;
  border-radius:var(--r-s);
  font-size:14px;color:var(--text-2);
  transition:background var(--ease),color var(--ease);
}
.nav-item i{width:20px;font-size:15px;text-align:center;color:var(--text-3);transition:color var(--ease)}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-item:hover i{color:var(--text-1)}
.nav-item.active{
  background:rgba(46,230,197,.10);
  color:var(--text-1);
  font-weight:600;
}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;
  border-radius:2px;background:var(--brand);
  box-shadow:0 0 14px rgba(46,230,197,.55);
}
.nav-item.active i{color:var(--brand)}
.shell-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.shell-foot p{font-size:12px;color:var(--text-3);line-height:1.7;padding:0 4px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--r-s);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background var(--ease),box-shadow var(--ease),transform var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  background:var(--brand);color:#04121A;
  box-shadow:var(--glow);
}
.btn-primary:hover{background:#48EBD1;box-shadow:0 0 0 1px rgba(46,230,197,.45),0 0 28px rgba(46,230,197,.34)}
.btn-primary:active{transform:translateY(1px);background:var(--brand-press)}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{background:rgba(46,230,197,.12);border-color:rgba(46,230,197,.4);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-ghost-soft{
  background:transparent;color:var(--text-2);
  border-color:var(--line-2);
  height:38px;padding:0 16px;font-size:13px;font-weight:500;
}
.btn-ghost-soft:hover{background:rgba(46,230,197,.10);color:var(--text-1);border-color:rgba(46,230,197,.35)}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ============ 主区域 ============ */
.app-main{
  margin-left:var(--shell-w);
  min-height:100vh;
  display:flex;flex-direction:column;
  position:relative;
}
main{flex:1 0 auto;display:block}

/* ============ 面包屑 ============ */
.crumb-bar{padding:28px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.18)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--text-2)}

/* ============ 页面头 ============ */
.page-head{
  position:relative;
  margin-top:24px;
  border-radius:var(--r-l);
  overflow:hidden;
  border:1px solid var(--line-2);
  background:#0B1526;
  box-shadow:var(--shadow);
}
.page-head-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center 32%;
  filter:saturate(.85);
}
.page-head-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,11,20,.72) 0%,rgba(6,11,20,.86) 62%,rgba(6,11,20,.96) 100%),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 72px);
}
.page-head-inner{
  position:relative;z-index:2;
  padding:72px 56px 56px;
  max-width:900px;
}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;
  border-radius:999px;
  font-size:12px;font-weight:500;letter-spacing:.02em;
  color:var(--accent);
  border:1px solid rgba(255,184,77,.35);
  background:rgba(255,184,77,.10);
}
.page-head h1{
  margin-top:20px;
  font-size:46px;
  font-weight:700;
  line-height:1.25;
  color:var(--text-1);
}
.page-head h1 .hl{color:var(--brand)}
.page-head .lead{
  margin-top:18px;
  max-width:62ch;
  font-size:17px;
  color:var(--text-2);
  line-height:1.85;
}
.head-metrics{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;gap:0;
  border-top:1px solid var(--line);
  background:rgba(6,11,20,.55);
  backdrop-filter:blur(10px);
}
.head-metrics div{
  flex:1 1 200px;
  padding:20px 32px;
  border-right:1px solid var(--line);
}
.head-metrics div:last-child{border-right:0}
.head-metrics strong{
  display:block;font-size:26px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.head-metrics span{display:block;margin-top:4px;font-size:13px;color:var(--text-3)}

/* ============ 板块通用 ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:32px;font-weight:700}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:66ch}
.eyebrow{
  display:inline-block;margin-bottom:14px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text-3);
}

/* ============ 编号列表 ============ */
.num-list{border-top:1px solid var(--line)}
.num-row{
  display:grid;
  grid-template-columns:88px 1fr;
  gap:24px;
  padding:28px 0;
  border-bottom:1px solid var(--line);
  transition:background var(--ease);
}
.num-row:hover{background:rgba(255,255,255,.03)}
.num-row .idx{
  font-size:28px;font-weight:700;color:rgba(255,184,77,.85);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.num-row h3{font-size:18px;font-weight:600;color:var(--text-1)}
.num-row p{margin-top:8px;font-size:15px;color:var(--text-2);max-width:70ch}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:44px}
.timeline::before{
  content:"";position:absolute;left:12px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,rgba(46,230,197,.55) 0%,rgba(46,230,197,.22) 45%,rgba(255,255,255,.07) 100%);
}
.tl-item{position:relative;padding-bottom:36px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-44px;top:0;
  width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--bg-1);
  border:1px solid rgba(46,230,197,.5);
  color:var(--brand);
  font-size:12px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.tl-card{
  border:1px solid var(--line-2);
  background:var(--panel);
  backdrop-filter:blur(14px);
  border-radius:var(--r-m);
  padding:22px 24px;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.tl-card:hover{border-color:rgba(46,230,197,.3);box-shadow:var(--glow);transform:translateY(-2px)}
.tl-card h3{font-size:17px;font-weight:600}
.tl-card p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.85;max-width:70ch}
.tl-meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;color:var(--text-2);
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);
}

/* ============ 排查清单 ============ */
.symptom-list{border-top:1px solid var(--line)}
.symptom-row{
  display:grid;
  grid-template-columns:minmax(200px,280px) 1fr;
  gap:32px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
}
.symptom-row .sym{
  display:flex;align-items:flex-start;gap:10px;
  font-size:15px;font-weight:600;color:var(--text-1);
}
.symptom-row .sym i{color:var(--error);margin-top:5px;font-size:13px}
.symptom-row .fix{font-size:15px;color:var(--text-2);line-height:1.85}
.symptom-row .fix b{color:var(--text-1);font-weight:600}

/* ============ 玻璃卡片组 ============ */
.glass-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.glass-card{
  border:1px solid var(--line-2);
  background:var(--panel);
  backdrop-filter:blur(14px);
  border-radius:var(--r-m);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.glass-card:hover{border-color:rgba(46,230,197,.34);box-shadow:var(--glow);transform:translateY(-2px)}
.card-media{
  position:relative;
  aspect-ratio:16/9;
  background:#12202F;
  overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,0) 40%,rgba(6,11,20,.72) 100%);
}
.card-body{padding:22px 24px 26px}
.card-body h3{font-size:18px;font-weight:600}
.card-body p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.8}
.card-foot{margin-top:16px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--brand)}
.card-foot i{transition:transform var(--ease)}
.glass-card:hover .card-foot i{transform:translateX(4px)}

/* ============ FAQ ============ */
.faq-panel{
  border:1px solid var(--line-2);
  background:var(--panel);
  backdrop-filter:blur(14px);
  border-radius:var(--r-l);
  padding:8px 28px;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;min-height:48px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 0;
  background:none;border:0;
  text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-q:hover{color:var(--brand)}
.faq-ic{position:relative;width:16px;height:16px;flex:none}
.faq-ic::before,.faq-ic::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform var(--ease),opacity var(--ease);
}
.faq-ic::before{left:0;right:0;top:7px;height:2px}
.faq-ic::after{top:0;bottom:0;left:7px;width:2px}
.faq-item.is-open .faq-ic::after{transform:scaleY(0)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 240ms ease-out;
}
.faq-a p{
  padding:0 40px 20px 0;
  font-size:15px;color:var(--text-2);line-height:1.85;
}
.faq-item.is-open .faq-a{max-height:280px}

/* ============ 末尾 CTA ============ */
.cta-section{padding:96px 0}
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-l);
  border:1px solid rgba(46,230,197,.22);
  background:#081220;
  box-shadow:var(--shadow);
}
.cta-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center 40%;
  opacity:.5;
}
.cta-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(120% 120% at 12% 0%,rgba(46,230,197,.18) 0%,rgba(6,11,20,.92) 58%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0 1px,transparent 1px 64px);
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  padding:64px 56px;
}
.cta-inner h2{font-size:30px;font-weight:700}
.cta-inner .cta-lead{margin-top:16px;font-size:16px;color:var(--text-2);max-width:56ch}
.cta-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.cta-form{
  border:1px solid var(--line-2);
  background:rgba(10,20,36,.66);
  backdrop-filter:blur(14px);
  border-radius:var(--r-m);
  padding:26px 24px;
}
.cta-form h3{font-size:16px;font-weight:600;margin-bottom:6px}
.cta-form .form-note{font-size:13px;color:var(--text-3);margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border-radius:var(--r-s);
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--text-1);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(46,230,197,.35);
  background:rgba(46,230,197,.06);
}
.field .err{display:none;margin-top:8px;font-size:13px;color:var(--error)}
.field.has-error input{border-color:var(--error)}
.field.has-error .err{display:block}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:auto;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:34ch;line-height:1.8}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color var(--ease),transform var(--ease)}
.footer-col a:hover{color:var(--text-1);transform:translateX(2px);text-decoration:underline;text-underline-offset:2px}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:12px;color:var(--text-3);
}

/* ============ 抽屉遮罩 ============ */
.drawer-mask{
  display:none;
  position:fixed;inset:0;z-index:95;
  background:rgba(0,0,0,.6);
  opacity:0;transition:opacity var(--ease);
}
.drawer-mask.show{display:block;opacity:1}

/* ============ 响应式 ============ */
@media (max-width:1599px){
  .container{max-width:1280px}
}
@media (min-width:1600px){
  .container{max-width:1400px}
}
@media (max-width:1279px){
  :root{--shell-w:88px}
  .app-shell{padding:20px 14px;align-items:center}
  .app-shell .brand{padding:0 0 18px;justify-content:center;width:100%}
  .app-shell .brand-text{display:none}
  .nav-label{display:none}
  .nav-item{justify-content:center;padding:0;width:56px}
  .nav-item span{display:none}
  .shell-foot .btn{width:56px;padding:0;font-size:0;gap:0}
  .shell-foot .btn i{font-size:16px}
  .shell-foot p{display:none}
  .cta-inner{padding:56px 40px;gap:40px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .app-shell{
    width:280px;
    align-items:stretch;
    padding:24px 18px 20px;
    transform:translateX(-100%);
    box-shadow:0 0 40px rgba(0,0,0,.5);
  }
  .app-shell.open{transform:translateX(0)}
  .app-shell .brand{justify-content:flex-start;padding:0 8px 20px}
  .app-shell .brand-text{display:block}
  .nav-label{display:block}
  .nav-item{justify-content:flex-start;padding:0 12px;width:auto}
  .nav-item span{display:inline}
  .shell-foot .btn{width:100%;padding:0 22px;font-size:15px;gap:8px}
  .shell-foot p{display:block}
  .app-main{margin-left:0}
  .container{padding:0 24px}
  .page-head-inner{padding:56px 32px 44px}
  .page-head h1{font-size:36px}
  .section{padding:72px 0}
  .cta-section{padding:72px 0}
  .glass-grid{grid-template-columns:1fr 1fr}
  .cta-inner{grid-template-columns:1fr;padding:48px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .page-head-inner{padding:44px 22px 36px}
  .page-head h1{font-size:30px}
  .page-head .lead{font-size:15.5px}
  .head-metrics div{flex:1 1 50%;padding:16px 20px;border-bottom:1px solid var(--line)}
  .head-metrics strong{font-size:22px}
  .section{padding:56px 0}
  .section-head h2{font-size:24px}
  .num-row{grid-template-columns:1fr;gap:8px;padding:22px 0}
  .num-row .idx{font-size:22px}
  .timeline{padding-left:34px}
  .timeline::before{left:10px}
  .tl-dot{left:-34px;width:22px;height:22px;font-size:11px}
  .tl-card{padding:18px 18px}
  .symptom-row{grid-template-columns:1fr;gap:10px;padding:20px 0}
  .glass-grid{grid-template-columns:1fr}
  .faq-panel{padding:4px 18px}
  .faq-q{font-size:15px}
  .cta-inner{padding:36px 22px;gap:32px}
  .cta-inner h2{font-size:23px}
  .cta-actions{gap:12px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .crumb-bar{padding:20px 0 0}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category3 */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1424;
  --panel:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.10);
  --brand:#2EE6C5;
  --brand-press:#1BC7AA;
  --accent:#FFB84D;
  --text-1:#E8F0F7;
  --text-2:#A7B7C8;
  --text-3:#6E8299;
  --ok:#3DDC97;
  --warn:#FFB84D;
  --error:#FF6B6B;
  --radius-sm:12px;
  --radius-md:16px;
  --radius-lg:20px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(46,230,197,.35), 0 0 24px rgba(46,230,197,.26);
  --sidebar-w:260px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-0);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(46,230,197,.35);}

/* ---------- 布局壳层 ---------- */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--bg-1);
  border-right:1px solid var(--line);
  padding:24px 20px;
  display:flex;flex-direction:column;gap:24px;
  z-index:80;
  transition:transform .2s ease-out;
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 6px;}
.brand-mark{
  width:24px;height:24px;flex:0 0 24px;border-radius:8px;
  background:linear-gradient(140deg,var(--brand),#0d8f7c);
  box-shadow:0 0 18px rgba(46,230,197,.35);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px 6px;border-radius:2px;
  background:var(--bg-0);opacity:.85;
}
.brand-text{font-size:16px;font-weight:700;color:var(--text-1);white-space:nowrap;}
.nav-group{display:flex;flex-direction:column;gap:6px;}
.nav-label{
  font-size:12px;color:var(--text-3);letter-spacing:.12em;
  padding:0 14px;margin-bottom:6px;text-transform:uppercase;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:14px;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item i{width:20px;text-align:center;font-size:15px;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.nav-item.active{background:rgba(46,230,197,.10);color:var(--text-1);}
.nav-item.active::before{
  content:"";position:absolute;left:-12px;top:8px;bottom:8px;width:2px;
  border-radius:2px;background:var(--brand);
}
.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.side-info{
  background:var(--panel);border:1px solid var(--line-strong);
  border-radius:var(--radius-md);padding:16px;
  font-size:13px;color:var(--text-2);line-height:1.7;
}
.side-info strong{display:block;color:var(--text-1);font-size:14px;margin-bottom:6px;}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:48px;border-radius:var(--radius-sm);
  background:var(--brand);color:#04161c;font-weight:600;font-size:15px;
  box-shadow:var(--glow);transition:filter .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.side-cta:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(46,230,197,.45),0 0 28px rgba(46,230,197,.3);}
.side-cta:active{transform:translateY(1px);}

.main{margin-left:var(--sidebar-w);min-height:100vh;}
.container{max-width:1280px;margin:0 auto;padding:0 40px;width:100%;}

/* ---------- 移动顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:90;
  background:rgba(6,11,20,.94);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  align-items:center;gap:14px;padding:0 16px;
}
.menu-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:var(--panel);color:var(--text-1);font-size:16px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:background .2s ease-out;
}
.menu-btn:hover{background:rgba(46,230,197,.12);}
.topbar .brand-text{font-size:15px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;
  transition:opacity .2s ease-out;z-index:70;
}
.drawer-mask.show{opacity:1;pointer-events:auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease-out,border-color .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out,color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04161c;box-shadow:var(--glow);}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(46,230,197,.45),0 0 28px rgba(46,230,197,.3);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-1);}
.btn-outline:hover{background:rgba(46,230,197,.12);border-color:rgba(46,230,197,.5);}
.btn-outline:active{transform:translateY(1px);}
.btn:disabled{opacity:.45;cursor:not-allowed;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 面包屑与页头 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding-top:32px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--text-3);opacity:.6;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb [aria-current]{color:var(--text-2);}

.page-head{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg,rgba(6,11,20,.82) 0%,rgba(6,11,20,.72) 55%,rgba(6,11,20,.96) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center 30%;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.03;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-head .container{position:relative;z-index:2;padding-bottom:72px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-top:36px;
  font-size:13px;color:var(--brand);letter-spacing:.08em;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);display:block;}
.page-head h1{
  margin-top:16px;font-size:48px;font-weight:700;color:var(--text-1);max-width:20ch;
}
.lede{margin-top:20px;font-size:17px;color:var(--text-2);max-width:72ch;}
.head-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px;}
.head-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:36px;font-size:13px;color:var(--text-3);}
.head-meta span{display:flex;align-items:center;gap:8px;}
.head-meta i{color:var(--accent);}

/* ---------- 板块 ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line);}
.section:last-of-type{border-bottom:none;}
.section-head{max-width:72ch;margin-bottom:48px;}
.section-head .kicker{
  display:block;font-size:13px;color:var(--accent);letter-spacing:.14em;margin-bottom:12px;
}
.section-head h2{font-size:36px;color:var(--text-1);}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;}
.section-head.with-link{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.section-link{font-size:14px;color:var(--brand);white-space:nowrap;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease-out;}
.section-link:hover{gap:10px;}

/* ---------- 对照清单 ---------- */
.compare-list{
  border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  background:var(--panel);backdrop-filter:blur(14px);overflow:hidden;
}
.compare-head,.compare-row{
  display:grid;grid-template-columns:200px 1fr 1fr;gap:24px;
  padding:22px 28px;align-items:start;
}
.compare-head{background:rgba(255,255,255,.04);font-size:13px;color:var(--text-3);letter-spacing:.06em;border-bottom:1px solid var(--line);}
.compare-row{border-bottom:1px solid var(--line);transition:background .2s ease-out;}
.compare-row:last-child{border-bottom:none;}
.compare-row:hover{background:rgba(255,255,255,.04);}
.compare-key{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--text-1);}
.compare-key i{color:var(--brand);font-size:15px;}
.compare-row p{font-size:15px;color:var(--text-2);}
.compare-note{font-size:14px;color:var(--text-3);}

/* ---------- 步骤对照 ---------- */
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;}
.split-col{
  background:var(--panel);border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  padding:32px;backdrop-filter:blur(14px);
}
.split-col h3{font-size:22px;display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.split-col h3 i{color:var(--brand);font-size:18px;}
.split-col .col-desc{font-size:14px;color:var(--text-3);margin-bottom:24px;}
.step-list{display:flex;flex-direction:column;gap:20px;}
.step-list li{display:flex;gap:16px;align-items:flex-start;}
.step-no{
  flex:0 0 34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:600;color:var(--accent);background:rgba(255,184,77,.10);
  border:1px solid rgba(255,184,77,.28);
}
.step-list p{font-size:15px;color:var(--text-2);}

/* ---------- 做法对照 ---------- */
.do-dont{display:grid;grid-template-columns:1fr 1fr;gap:32px;}
.do-col,.dont-col{
  border-radius:var(--radius-lg);padding:32px;border:1px solid var(--line-strong);
  background:var(--panel);backdrop-filter:blur(14px);
}
.do-col{border-top:2px solid rgba(61,220,151,.6);}
.dont-col{border-top:2px solid rgba(255,107,107,.5);}
.do-col h3,.dont-col h3{font-size:20px;margin-bottom:20px;display:flex;align-items:center;gap:10px;}
.do-col h3 i{color:var(--ok);}
.dont-col h3 i{color:var(--error);}
.mark-list{display:flex;flex-direction:column;gap:14px;}
.mark-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);align-items:flex-start;}
.mark-list li i{margin-top:6px;font-size:13px;}
.mark-list.ok li i{color:var(--ok);}
.mark-list.warn li i{color:var(--error);}

/* ---------- 自检清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.check-grid li{
  display:flex;align-items:flex-start;gap:12px;
  padding:18px 22px;border-radius:var(--radius-md);
  background:var(--panel);border:1px solid var(--line);
  font-size:15px;color:var(--text-2);
  transition:border-color .2s ease-out,transform .2s ease-out,background .2s ease-out;
}
.check-grid li:hover{border-color:rgba(46,230,197,.35);background:rgba(46,230,197,.06);transform:translateY(-2px);}
.check-grid li i{color:var(--brand);margin-top:5px;font-size:15px;}

/* ---------- 玻璃卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.glass-card{
  border-radius:var(--radius-md);overflow:hidden;
  background:var(--panel);border:1px solid var(--line-strong);
  backdrop-filter:blur(14px);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  display:flex;flex-direction:column;
}
.glass-card:hover{transform:translateY(-2px);border-color:rgba(46,230,197,.35);box-shadow:var(--glow);}
.card-media{position:relative;aspect-ratio:16/9;background:rgba(255,255,255,.06);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,0) 35%,rgba(6,11,20,.72) 100%);
}
.card-body{padding:22px 22px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;color:var(--accent);border:1px solid rgba(255,184,77,.35);
  background:rgba(255,184,77,.10);width:fit-content;
}
.card-body h3{font-size:18px;color:var(--text-1);}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq{
  border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  background:var(--panel);backdrop-filter:blur(14px);overflow:hidden;
}
.faq details{border-bottom:1px solid var(--line);}
.faq details:last-child{border-bottom:none;}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:48px;padding:18px 28px;font-size:17px;font-weight:600;color:var(--text-1);
  transition:background .2s ease-out;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{background:rgba(255,255,255,.05);}
.faq summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--brand);
  transition:transform .2s ease-out,color .2s ease-out;line-height:1;
}
.faq details[open] summary::after{content:"−";transform:rotate(0deg);}
.faq .answer{padding:0 28px 24px;font-size:15px;color:var(--text-2);max-width:72ch;}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);border:1px solid var(--line-strong);
  padding:56px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;
  background-image:
    linear-gradient(120deg,rgba(6,11,20,.94) 0%,rgba(10,20,36,.86) 60%,rgba(6,11,20,.92) 100%),
    url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.03;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:44px 44px;
}
.cta-copy,.cta-form{position:relative;z-index:2;}
.cta-copy h2{font-size:32px;color:var(--text-1);}
.cta-copy p{margin-top:18px;color:var(--text-2);font-size:16px;max-width:52ch;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);}
.cta-points i{color:var(--brand);margin-top:5px;font-size:13px;}

.form-grid{display:flex;flex-direction:column;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;color:var(--text-2);}
.field input{
  height:48px;border-radius:var(--radius-sm);
  background:var(--panel);border:1px solid var(--line);
  color:var(--text-1);padding:0 16px;font-size:15px;outline:none;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.field input::placeholder{color:var(--text-3);}
.field input:hover{border-color:var(--line-strong);}
.field input:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(46,230,197,.28);background:rgba(255,255,255,.07);}
.form-hint{font-size:13px;color:var(--text-3);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{padding:0 0 16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:34ch;line-height:1.8;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:18px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s ease-out,transform .2s ease-out;}
.footer-col a:hover{color:var(--text-1);transform:translateX(2px);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);align-items:flex-start;}
.footer-contact i{color:var(--text-3);margin-top:6px;font-size:13px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (min-width:1600px){
  .container{max-width:1400px;}
}
@media (max-width:1279px) and (min-width:1024px){
  :root{--sidebar-w:88px;}
  .sidebar{padding:24px 14px;align-items:center;}
  .brand-text{display:none;}
  .nav-label{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item span{display:none;}
  .nav-item.active::before{left:-6px;}
  .side-info{display:none;}
  .side-cta{padding:0;width:48px;}
  .side-cta span{display:none;}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-100%);width:280px;z-index:100;}
  .sidebar.open{transform:none;}
  .main{margin-left:0;padding-top:64px;}
  .topbar{display:flex;}
  .section{padding:64px 0;}
  .page-head h1{font-size:36px;}
  .page-head .container{padding-bottom:56px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-panel{grid-template-columns:1fr;padding:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .page-head h1{font-size:32px;}
  .breadcrumb{padding-top:24px;}
  .section-head h2{font-size:28px;}
  .section-head.with-link{flex-direction:column;align-items:flex-start;}
  .compare-head{display:none;}
  .compare-row{grid-template-columns:1fr;gap:8px;padding:20px 22px;}
  .split-grid{grid-template-columns:1fr;}
  .do-dont{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .split-col,.do-col,.dont-col{padding:24px;}
  .cta-panel{padding:32px 24px;}
  .cta-copy h2{font-size:26px;}
  .faq summary{padding:16px 20px;font-size:16px;}
  .faq .answer{padding:0 20px 20px;}
  .head-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}