/* roulang page: index */
:root{
  --ink:#eaf3ff;
  --muted:#9fb4cd;
  --line:rgba(172,210,255,.15);
  --bg:#061426;
  --bg-deep:#030b16;
  --panel:rgba(13,37,66,.68);
  --panel-solid:#0b2442;
  --blue:#3e9cff;
  --cyan:#55e4ff;
  --violet:#7485ff;
  --green:#67e6b3;
  --radius:22px;
  --radius-sm:14px;
  --shadow:0 20px 60px rgba(0,0,0,.24);
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  line-height:1.72;overflow-x:hidden;
}
body:before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;
  background:radial-gradient(circle at 8% 14%,rgba(53,144,255,.13),transparent 27%),
             radial-gradient(circle at 91% 47%,rgba(90,91,255,.12),transparent 30%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
.container-wide{width:min(var(--container),calc(100% - 40px));margin:auto}
.section{padding:94px 0;position:relative}
.section-soft{background:linear-gradient(180deg,rgba(14,45,79,.28),rgba(5,18,35,.03))}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:.8rem;
  font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px;
}
.eyebrow:before{content:"";width:26px;height:1px;background:var(--cyan)}
.section-title{font-size:clamp(1.8rem,3vw,2.75rem);line-height:1.25;margin:0 0 16px;font-weight:800;letter-spacing:-.04em}
.section-intro{max-width:690px;color:var(--muted);font-size:1rem;margin:0}
.glass{
  background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.site-header{position:absolute;z-index:20;top:22px;left:0;width:100%}
.nav-shell{
  width:min(1240px,calc(100% - 32px));margin:auto;padding:10px 12px 10px 18px;
  border:1px solid rgba(210,235,255,.18);border-radius:20px;background:rgba(5,19,37,.74);
  box-shadow:0 12px 34px rgba(0,0,0,.18);backdrop-filter:blur(18px);
}
.navbar-brand{font-size:1.2rem;font-weight:800;letter-spacing:-.04em;display:flex;align-items:center;gap:10px}
.brand-mark{
  width:31px;height:31px;border-radius:10px;display:grid;place-items:center;color:#061426;
  background:linear-gradient(135deg,var(--cyan),var(--blue));font-size:.85rem;
}
.navbar-toggler{border:0;color:var(--ink);box-shadow:none!important}
.navbar-toggler-icon{filter:invert(1)}
.nav-link{
  color:#b7c9df!important;font-size:.9rem;font-weight:600;padding:.54rem .78rem!important;
  border-radius:10px;transition:.25s ease;
}
.nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(74,159,255,.14)}
.nav-action{
  display:inline-flex;align-items:center;gap:8px;padding:10px 15px;border-radius:12px;
  color:#071628;background:linear-gradient(100deg,var(--cyan),#83b9ff);font-size:.86rem;font-weight:800;
  transition:.25s ease;
}
.nav-action:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(77,204,255,.32)}
.hero{
  min-height:760px;padding:145px 0 70px;position:relative;isolation:isolate;
  background:linear-gradient(90deg,rgba(3,11,22,.94) 5%,rgba(3,11,22,.64) 56%,rgba(3,11,22,.84)),
             url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
}
.hero:after{content:"";position:absolute;inset:auto 0 0;height:180px;background:linear-gradient(transparent,var(--bg));z-index:-1}
.creator-profile{display:flex;align-items:center;gap:17px;margin-bottom:25px}
.avatar{
  width:74px;height:74px;border-radius:50%;padding:3px;background:linear-gradient(135deg,var(--cyan),var(--violet));
  box-shadow:0 0 0 7px rgba(81,214,255,.09)
}
.avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%;border:3px solid #09213d}
.creator-name{font-size:1.08rem;font-weight:800;margin:0}
.creator-meta{color:#a8bdd4;font-size:.86rem;margin:2px 0 0}
.follow-btn{margin-left:8px;border:1px solid rgba(86,226,255,.55);padding:8px 13px;border-radius:10px;color:var(--cyan);font-size:.82rem;font-weight:700}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(330px,.8fr);gap:54px;align-items:center}
.hero h1{font-size:clamp(2.5rem,5vw,4.7rem);line-height:1.08;letter-spacing:-.065em;font-weight:850;margin:0 0 22px;max-width:760px}
.hero h1 span{color:var(--cyan)}
.hero-copy{max-width:700px;color:#c0d0e1;font-size:1.04rem;margin-bottom:30px}
.hero-actions{display:flex;gap:13px;flex-wrap:wrap}
.btn-glow,.btn-quiet{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:13px;
  padding:13px 20px;font-weight:800;font-size:.92rem;transition:.25s ease;
}
.btn-glow{background:linear-gradient(110deg,var(--cyan),#619cff);color:#071426;box-shadow:0 0 27px rgba(70,218,255,.3)}
.btn-glow:hover{color:#061426;transform:translateY(-3px);box-shadow:0 9px 35px rgba(70,218,255,.42)}
.btn-quiet{border:1px solid rgba(203,229,255,.25);color:#e9f5ff;background:rgba(7,27,50,.36)}
.btn-quiet:hover{color:#fff;background:rgba(68,145,235,.16);transform:translateY(-2px)}
.hero-panel{padding:24px;border-radius:var(--radius);position:relative;overflow:hidden}
.hero-panel:before{content:"";position:absolute;width:210px;height:210px;background:rgba(76,218,255,.15);filter:blur(50px);right:-90px;top:-80px}
.panel-top{position:relative;display:flex;justify-content:space-between;align-items:center;padding-bottom:20px;border-bottom:1px solid var(--line)}
.panel-label{color:var(--muted);font-size:.8rem}
.online-dot{display:flex;align-items:center;gap:7px;color:var(--green);font-size:.78rem;font-weight:700}
.online-dot i{font-size:.5rem}
.panel-number{font-size:3.3rem;font-weight:850;line-height:1;margin:24px 0 7px;letter-spacing:-.06em}
.panel-caption{color:var(--muted);font-size:.86rem}
.signal-bars{display:flex;align-items:end;gap:6px;height:47px;margin:22px 0}
.signal-bars b{display:block;width:14%;border-radius:5px 5px 2px 2px;background:linear-gradient(180deg,var(--cyan),rgba(78,138,255,.25))}
.signal-bars b:nth-child(1){height:34%}.signal-bars b:nth-child(2){height:63%}.signal-bars b:nth-child(3){height:44%}.signal-bars b:nth-child(4){height:85%}.signal-bars b:nth-child(5){height:60%}.signal-bars b:nth-child(6){height:100%}
.panel-foot{display:flex;gap:10px;flex-wrap:wrap}
.mini-badge{padding:6px 9px;border-radius:8px;background:rgba(115,164,255,.12);color:#c4dcff;font-size:.76rem}
.metrics{margin-top:-25px;position:relative;z-index:4}
.metrics-box{display:grid;grid-template-columns:repeat(4,1fr);padding:20px 26px;border-radius:18px}
.metric{padding:2px 22px;border-right:1px solid var(--line)}
.metric:first-child{padding-left:0}.metric:last-child{border-right:0}
.metric strong{display:block;font-size:1.5rem;letter-spacing:-.05em}.metric span{color:var(--muted);font-size:.8rem}
.feature-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;margin-top:38px}
.feature-main{border-radius:var(--radius);overflow:hidden;min-height:350px;position:relative;padding:38px;display:flex;align-items:end;background:linear-gradient(0deg,rgba(2,12,25,.94),rgba(2,12,25,.08)),url('/assets/images/coverpic/cover-2.webp') center/cover}
.feature-main h3{font-size:1.65rem;font-weight:800}.feature-main p{max-width:500px;color:#c1d2e4;margin:10px 0 0}
.feature-stack{display:grid;gap:18px}
.feature-card{padding:22px;border-radius:18px;min-height:166px;transition:.25s ease}
.feature-card:hover,.scene-card:hover,.quote-card:hover,.plan:hover{transform:translateY(-5px);border-color:rgba(94,220,255,.42)}
.feature-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(76,178,255,.14);color:var(--cyan);margin-bottom:12px}
.feature-card h4{font-size:1rem;font-weight:800;margin:0 0 7px}.feature-card p{font-size:.87rem;color:var(--muted);margin:0}
.scene-wrap{display:grid;grid-template-columns:285px 1fr;gap:28px;align-items:start}
.scene-side{padding:30px;border-radius:var(--radius);background:#0b2748}
.scene-side p{color:#b8cbe0;font-size:.9rem;margin:14px 0 0}
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.scene-card{padding:23px;border:1px solid var(--line);background:rgba(12,39,70,.48);border-radius:18px;transition:.25s ease}
.scene-card i{color:var(--cyan);font-size:1.2rem}.scene-card h4{font-size:1.05rem;margin:14px 0 7px;font-weight:800}.scene-card p{margin:0;color:var(--muted);font-size:.86rem}
.channel-section{padding-top:40px}
.channel-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:22px}
.channel-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.channel-card{border:1px solid var(--line);padding:17px;border-radius:15px;background:rgba(10,35,63,.48);transition:.25s ease}
.channel-card:hover{border-color:rgba(85,228,255,.5);background:rgba(25,71,117,.52)}
.channel-card span{display:block;font-size:.78rem;color:var(--cyan);margin-bottom:5px}.channel-card strong{font-size:.94rem}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:37px}
.step{position:relative;padding:25px 22px;border-top:1px solid rgba(80,221,255,.45)}
.step-no{font-size:.75rem;color:var(--cyan);font-weight:800;letter-spacing:.12em}.step h4{font-size:1.08rem;margin:14px 0 8px;font-weight:800}.step p{font-size:.86rem;color:var(--muted);margin:0}
.step:after{content:"";position:absolute;width:8px;height:8px;border-radius:50%;top:-4px;left:0;background:var(--cyan);box-shadow:0 0 15px var(--cyan)}
.demo-layout{display:grid;grid-template-columns:1fr 1.03fr;gap:46px;align-items:center}
.demo-image{position:relative}.demo-image img{width:100%;height:390px;object-fit:cover;border-radius:var(--radius);opacity:.88}
.demo-chip{position:absolute;right:-17px;bottom:25px;padding:15px 18px;border-radius:15px;background:rgba(6,26,48,.9);border:1px solid var(--line);font-weight:700;font-size:.86rem}
.demo-list{list-style:none;padding:0;margin:28px 0 0}.demo-list li{display:flex;gap:13px;padding:15px 0;border-bottom:1px solid var(--line);color:#c2d1e2;font-size:.92rem}.demo-list i{color:var(--green);margin-top:4px}
.quote-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:22px;margin-top:37px}
.quote-lead{padding:31px;border-radius:var(--radius);background:linear-gradient(135deg,#103d72,#0b2341)}.quote-lead .big-quote{font-size:3rem;line-height:1;color:var(--cyan)}.quote-lead p{font-size:1.2rem;line-height:1.6;font-weight:700;margin:17px 0}.quote-lead small{color:#b4c9df}
.quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.quote-card{padding:23px;border-radius:18px;transition:.25s ease}.quote-card p{font-size:.9rem;color:#c0d0e0;margin:0 0 17px}.quote-author{display:flex;align-items:center;gap:10px}.quote-author b{font-size:.85rem}.quote-author span{display:block;color:var(--muted);font-size:.76rem}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:17px;margin-top:38px}.plan{padding:28px;border-radius:20px;position:relative;transition:.25s ease}.plan.featured{background:linear-gradient(145deg,#12477f,#0a2d53);border:1px solid rgba(88,225,255,.5)}.plan h4{font-size:1.14rem;font-weight:800}.plan .price{font-size:2rem;font-weight:850;letter-spacing:-.06em;margin:15px 0}.plan .price small{font-size:.8rem;color:var(--muted);font-weight:400;letter-spacing:0}.plan p{font-size:.86rem;color:var(--muted);min-height:48px}.plan ul{list-style:none;padding:0;margin:20px 0 0}.plan li{font-size:.85rem;color:#c8d8e8;padding:7px 0}.plan li i{color:var(--green);margin-right:8px}.recommend{position:absolute;right:18px;top:18px;background:var(--cyan);color:#06213c;padding:4px 8px;border-radius:7px;font-size:.7rem;font-weight:800}
.news-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:22px;margin-top:36px}.news-list{border-radius:var(--radius);overflow:hidden}.news-item{display:grid;grid-template-columns:104px 1fr auto;align-items:center;gap:17px;padding:20px 22px;border-bottom:1px solid var(--line);transition:.2s ease}.news-item:last-child{border-bottom:0}.news-item:hover{background:rgba(62,149,255,.09)}.news-date{font-size:.77rem;color:var(--cyan);font-weight:700}.news-item h4{font-size:1rem;margin:0 0 5px;font-weight:750}.news-item p{margin:0;font-size:.82rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.news-arrow{color:var(--cyan)}
.news-promo{min-height:100%;padding:29px;border-radius:var(--radius);background:linear-gradient(155deg,rgba(32,91,157,.86),rgba(9,30,57,.96)),url('/assets/images/coverpic/cover-7.webp') center/cover}.news-promo h3{font-weight:800;font-size:1.48rem;margin:56px 0 11px}.news-promo p{font-size:.9rem;color:#c1d5e9}
.answer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px}.answer{padding:22px;border-radius:17px;border:1px solid var(--line);background:rgba(8,29,52,.54)}.answer h4{font-size:1rem;font-weight:800;margin:0 0 10px}.answer p{font-size:.86rem;color:var(--muted);margin:0}
.download-banner{border-radius:var(--radius);padding:48px;position:relative;overflow:hidden;background:linear-gradient(110deg,#0d467a,#122a66)}.download-banner:after{content:"";position:absolute;width:380px;height:380px;border:60px solid rgba(93,226,255,.13);border-radius:50%;right:-110px;top:-185px}.download-banner .row{position:relative;z-index:1}.download-banner h2{font-size:clamp(1.7rem,3vw,2.55rem);font-weight:850;letter-spacing:-.05em}.download-banner p{color:#c7dbed;max-width:650px;margin:14px 0 0}.form-row{display:flex;gap:10px;justify-content:end}.form-control{background:rgba(2,18,37,.45)!important;border:1px solid rgba(208,236,255,.24)!important;color:#fff!important;border-radius:12px!important;padding:12px 14px!important}.form-control::placeholder{color:#a9bfd8}.form-control:focus{box-shadow:0 0 0 3px rgba(80,222,255,.18)!important;border-color:var(--cyan)!important}
.site-footer{padding:64px 0 25px;background:#030b16;border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.25fr repeat(2,.7fr);gap:35px}.footer-brand p{color:var(--muted);font-size:.88rem;max-width:350px;margin:14px 0}.footer-title{font-size:.9rem;font-weight:800;margin-bottom:13px}.footer-links a{display:block;color:var(--muted);font-size:.84rem;margin:8px 0;transition:.2s}.footer-links a:hover{color:var(--cyan);padding-left:3px}.footer-bottom{margin-top:45px;padding-top:19px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:18px;color:#7890aa;font-size:.78rem}
@media(max-width:1024px){.hero-grid,.demo-layout{grid-template-columns:1fr;gap:35px}.hero{min-height:auto}.hero-panel{max-width:540px}.scene-wrap{grid-template-columns:1fr}.metrics-box{grid-template-columns:repeat(2,1fr);gap:17px}.metric:nth-child(2){border-right:0}.metric:nth-child(3){padding-left:0}.plans{grid-template-columns:repeat(3,1fr)}}
@media(max-width:768px){.section{padding:68px 0}.site-header{top:12px}.nav-shell{width:calc(100% - 20px);padding:8px 12px}.navbar-collapse{padding-top:10px}.nav-action{margin:8px 0 4px}.hero{padding:132px 0 64px}.hero h1{font-size:2.6rem}.metrics{margin-top:0}.metrics-box{border-radius:16px}.feature-grid,.news-grid,.quote-layout{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.channel-grid{grid-template-columns:repeat(3,1fr)}.plans{grid-template-columns:1fr}.plan p{min-height:0}.answer-grid{grid-template-columns:1fr}.form-row{justify-content:start;margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.container-wide{width:min(100% - 26px,var(--container))}.hero h1{font-size:2.22rem}.creator-profile{gap:12px}.follow-btn{display:none}.hero-panel{padding:20px}.metrics-box{padding:18px}.metric{padding:0 12px}.metric strong{font-size:1.22rem}.feature-main{padding:25px;min-height:290px}.scene-grid,.quotes{grid-template-columns:1fr}.channel-grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:1fr}.demo-image img{height:290px}.demo-chip{right:8px}.news-item{grid-template-columns:1fr auto;gap:8px;padding:17px}.news-date{grid-column:1/2}.news-item p{white-space:normal}.news-arrow{grid-column:2;grid-row:1/3}.download-banner{padding:30px 23px}.form-row{display:block}.form-row .btn-glow{width:100%;margin-top:10px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}}

/* roulang page: article */
:root{
      --ink:#eaf3ff;
      --muted:#9fb4cd;
      --line:rgba(172,210,255,.15);
      --bg:#061426;
      --bg-deep:#030b16;
      --panel:rgba(13,37,66,.68);
      --panel-solid:#0b2442;
      --blue:#3e9cff;
      --cyan:#55e4ff;
      --violet:#7485ff;
      --green:#67e6b3;
      --radius:22px;
      --radius-sm:14px;
      --shadow:0 20px 60px rgba(0,0,0,.24);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--bg);color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.78;overflow-x:hidden;
    }
    body:before{
      content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;
      background:
        radial-gradient(circle at 8% 14%,rgba(53,144,255,.14),transparent 28%),
        radial-gradient(circle at 91% 47%,rgba(90,91,255,.12),transparent 31%);
    }
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    .container-wide{width:min(var(--container),calc(100% - 40px));margin:auto}
    .section{padding:88px 0;position:relative}
    .section-soft{background:linear-gradient(180deg,rgba(14,45,79,.3),rgba(5,18,35,.06))}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:.79rem;
      font-weight:800;letter-spacing:.1em;margin-bottom:13px;
    }
    .eyebrow:before{content:"";width:26px;height:1px;background:var(--cyan)}
    .section-title{
      margin:0 0 14px;font-size:clamp(1.75rem,3vw,2.65rem);
      line-height:1.25;font-weight:850;letter-spacing:-.045em;
    }
    .section-intro{max-width:700px;margin:0;color:var(--muted)}
    .site-header{position:absolute;z-index:20;top:22px;left:0;width:100%}
    .nav-shell{
      width:min(1240px,calc(100% - 32px));margin:auto;padding:10px 12px 10px 18px;
      border:1px solid rgba(210,235,255,.18);border-radius:20px;background:rgba(5,19,37,.76);
      box-shadow:0 12px 34px rgba(0,0,0,.18);backdrop-filter:blur(18px);
    }
    .navbar-brand{
      font-size:1.2rem;font-weight:850;letter-spacing:-.04em;display:flex;
      align-items:center;gap:10px;color:var(--ink)!important;
    }
    .brand-mark{
      width:31px;height:31px;border-radius:10px;display:grid;place-items:center;color:#061426;
      background:linear-gradient(135deg,var(--cyan),var(--blue));font-size:.85rem;
    }
    .navbar-toggler{border:0;color:var(--ink);box-shadow:none!important}
    .navbar-toggler-icon{filter:invert(1)}
    .nav-link{
      color:#b7c9df!important;font-size:.9rem;font-weight:650;padding:.54rem .78rem!important;
      border-radius:10px;transition:.25s ease;
    }
    .nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(74,159,255,.14)}
    .nav-action{
      display:inline-flex;align-items:center;gap:8px;padding:10px 15px;border-radius:12px;
      color:#071628;background:linear-gradient(100deg,var(--cyan),#83b9ff);
      font-size:.86rem;font-weight:850;transition:.25s ease;
    }
    .nav-action:hover{color:#061426;transform:translateY(-2px);box-shadow:0 8px 22px rgba(77,204,255,.32)}
    .article-hero{
      position:relative;min-height:530px;padding:162px 0 78px;overflow:hidden;
      background:
        linear-gradient(90deg,rgba(3,11,22,.95) 2%,rgba(3,11,22,.75) 57%,rgba(3,11,22,.82)),
        url('/assets/images/backpic/back-5.jpg') center/cover no-repeat;
    }
    .article-hero:after{
      content:"";position:absolute;left:0;right:0;bottom:0;height:170px;
      background:linear-gradient(transparent,var(--bg));pointer-events:none;
    }
    .article-hero .container-wide{position:relative;z-index:1}
    .breadcrumb-line{
      display:flex;align-items:center;flex-wrap:wrap;gap:9px;color:#b8cae0;
      font-size:.87rem;margin-bottom:28px;
    }
    .breadcrumb-line i{font-size:.65rem;color:var(--cyan)}
    .article-label{
      display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;
      border:1px solid rgba(85,228,255,.28);background:rgba(60,166,255,.11);
      color:var(--cyan);font-size:.8rem;font-weight:800;margin-bottom:17px;
    }
    .article-title{
      max-width:930px;margin:0;font-size:clamp(2.15rem,4.5vw,4.25rem);line-height:1.14;
      font-weight:850;letter-spacing:-.065em;text-wrap:balance;
    }
    .article-summary{
      max-width:800px;color:#bdd0e3;font-size:1.04rem;margin:22px 0 0;
    }
    .article-meta{
      display:flex;align-items:center;gap:15px;flex-wrap:wrap;margin-top:25px;color:#abc0d7;font-size:.87rem;
    }
    .article-meta span{display:inline-flex;align-items:center;gap:7px}
    .article-meta i{color:var(--cyan)}
    .article-layout{
      display:grid;grid-template-columns:minmax(0,1fr) 276px;gap:42px;align-items:start;
    }
    .article-body{
      padding:clamp(24px,4vw,52px);border:1px solid var(--line);border-radius:var(--radius);
      background:linear-gradient(145deg,rgba(15,44,78,.76),rgba(6,22,42,.84));box-shadow:var(--shadow);
    }
    .article-body>*:first-child{margin-top:0}
    .article-body h2{
      margin:2.15em 0 .72em;font-size:clamp(1.45rem,2.5vw,2.05rem);line-height:1.32;
      font-weight:850;letter-spacing:-.035em;color:#f2f8ff;
    }
    .article-body h3{
      margin:1.8em 0 .65em;font-size:1.22rem;font-weight:800;color:#dff4ff;
    }
    .article-body p{margin:0 0 1.15em;color:#c4d4e6;font-size:1.01rem}
    .article-body ul,.article-body ol{margin:0 0 1.35em;padding-left:1.35em;color:#c4d4e6}
    .article-body li{padding-left:.2em;margin:.42em 0}
    .article-body a{color:var(--cyan);border-bottom:1px solid rgba(85,228,255,.38);transition:.2s ease}
    .article-body a:hover{color:#fff;border-color:#fff}
    .article-body blockquote{
      margin:1.8em 0;padding:24px 26px;border-left:3px solid var(--cyan);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
      background:rgba(68,163,255,.1);color:#d8f5ff;font-size:1.08rem;font-weight:650;
    }
    .article-body img{width:100%;height:auto;border-radius:16px;margin:1.7em 0;border:1px solid var(--line)}
    .article-body table{width:100%;margin:1.5em 0;border-collapse:collapse;overflow:hidden;border-radius:14px}
    .article-body th,.article-body td{padding:13px 15px;border:1px solid var(--line);color:#c7d8e9}
    .article-body th{background:rgba(62,156,255,.15);color:#ecf7ff}
    .article-aside{position:sticky;top:22px}
    .aside-card{
      padding:22px;border:1px solid var(--line);border-radius:18px;
      background:rgba(10,34,61,.7);box-shadow:0 14px 42px rgba(0,0,0,.14);margin-bottom:18px;
    }
    .aside-title{font-size:.96rem;font-weight:850;margin-bottom:13px;color:#eef7ff}
    .aside-list{list-style:none;margin:0;padding:0}
    .aside-list li{border-bottom:1px solid var(--line)}
    .aside-list li:last-child{border-bottom:0}
    .aside-list a{
      display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;
      color:#b9cce1;font-size:.88rem;transition:.2s ease;
    }
    .aside-list a:hover{color:var(--cyan);padding-left:4px}
    .aside-list i{font-size:.68rem;color:var(--cyan)}
    .info-points{display:grid;gap:12px}
    .info-point{display:flex;gap:11px;align-items:flex-start}
    .info-point i{width:30px;height:30px;display:grid;place-items:center;flex:none;border-radius:9px;background:rgba(85,228,255,.12);color:var(--cyan);font-size:.8rem}
    .info-point strong{display:block;font-size:.85rem;color:#e5f2ff}
    .info-point span{display:block;color:var(--muted);font-size:.78rem;margin-top:1px}
    .quote-strip{
      position:relative;overflow:hidden;padding:48px;border:1px solid rgba(85,228,255,.25);
      border-radius:var(--radius);background:
      linear-gradient(100deg,rgba(16,58,100,.9),rgba(8,25,51,.92)),
      url('/assets/images/backpic/back-3.webp') center/cover;
    }
    .quote-strip:before{content:"“";position:absolute;right:34px;top:-42px;color:rgba(85,228,255,.14);font-size:13rem;font-family:Georgia,serif}
    .quote-strip p{position:relative;z-index:1;max-width:850px;margin:0;font-size:clamp(1.22rem,2.5vw,1.75rem);line-height:1.55;font-weight:750;letter-spacing:-.025em}
    .quote-strip span{position:relative;z-index:1;display:block;color:var(--cyan);font-size:.86rem;font-weight:750;margin-top:15px}
    .matrix-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:13px;margin-top:31px}
    .matrix-card{
      min-height:152px;padding:19px;border:1px solid var(--line);border-radius:17px;
      background:rgba(11,36,65,.58);transition:.25s ease;
    }
    .matrix-card:hover{transform:translateY(-5px);border-color:rgba(85,228,255,.5);background:rgba(20,59,99,.68)}
    .matrix-card i{color:var(--cyan);font-size:1.2rem}
    .matrix-card h3{font-size:1rem;font-weight:850;margin:18px 0 5px}
    .matrix-card p{font-size:.81rem;color:var(--muted);margin:0}
    .related-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;margin-top:32px}
    .related-card{
      min-height:275px;position:relative;overflow:hidden;border-radius:var(--radius);border:1px solid var(--line);
      background:linear-gradient(0deg,rgba(3,12,26,.92),rgba(3,12,26,.12)),url('/assets/images/coverpic/cover-11.webp') center/cover;
      padding:31px;display:flex;flex-direction:column;justify-content:flex-end;
    }
    .related-card.alt{background-image:linear-gradient(0deg,rgba(3,12,26,.92),rgba(3,12,26,.12)),url('/assets/images/coverpic/cover-16.webp')}
    .related-card .tag{color:var(--cyan);font-size:.79rem;font-weight:800;margin-bottom:8px}
    .related-card h3{font-size:1.38rem;font-weight:850;line-height:1.35;margin:0 0 8px}
    .related-card p{margin:0;color:#c0d0df;font-size:.88rem;max-width:440px}
    .faq-wrap{max-width:880px;margin:31px auto 0}
    .faq-item{border:1px solid var(--line);border-radius:15px;background:rgba(10,35,63,.55);margin-bottom:12px;overflow:hidden}
    .faq-question{
      width:100%;padding:18px 20px;border:0;background:transparent;color:var(--ink);text-align:left;
      display:flex;justify-content:space-between;gap:18px;align-items:center;font-weight:800;font-size:1rem;
    }
    .faq-question i{color:var(--cyan);transition:.25s ease}
    .faq-question[aria-expanded="true"] i{transform:rotate(45deg)}
    .faq-answer{padding:0 20px 19px;color:var(--muted);font-size:.93rem}
    .article-cta{
      padding:50px;border-radius:var(--radius);overflow:hidden;position:relative;
      background:linear-gradient(115deg,#124e8e,#182e70 58%,#163e73);border:1px solid rgba(150,222,255,.28);
    }
    .article-cta:after{
      content:"";position:absolute;width:290px;height:290px;border-radius:50%;right:-75px;top:-120px;
      background:rgba(85,228,255,.16);filter:blur(8px);
    }
    .article-cta .cta-inner{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;gap:28px}
    .article-cta h2{font-size:clamp(1.6rem,3vw,2.35rem);font-weight:850;letter-spacing:-.045em;margin:0 0 10px}
    .article-cta p{margin:0;color:#d0e4f8;max-width:650px}
    .btn-glow,.btn-quiet{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:13px;
      padding:13px 20px;font-weight:850;font-size:.92rem;white-space:nowrap;transition:.25s ease;
    }
    .btn-glow{background:linear-gradient(110deg,var(--cyan),#83b9ff);color:#071426;box-shadow:0 0 27px rgba(70,218,255,.3)}
    .btn-glow:hover{color:#061426;transform:translateY(-3px);box-shadow:0 9px 35px rgba(70,218,255,.42)}
    .empty-state{text-align:center;padding:42px 18px}
    .empty-state i{font-size:2rem;color:var(--cyan);margin-bottom:14px}
    .empty-state h2{margin:0 0 10px;font-size:1.6rem}
    .empty-state p{color:var(--muted);margin-bottom:22px}
    .site-footer{padding:66px 0 22px;background:#030d1b;border-top:1px solid var(--line)}
    .footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr;gap:48px}
    .footer-brand p{max-width:390px;color:var(--muted);font-size:.89rem;margin:18px 0 0}
    .footer-title{font-size:.88rem;font-weight:850;color:#eff8ff;margin:5px 0 15px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#9fb4cd;font-size:.87rem;transition:.2s ease}
    .footer-links a:hover{color:var(--cyan);transform:translateX(3px)}
    .footer-bottom{
      display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;padding-top:31px;margin-top:40px;
      border-top:1px solid var(--line);font-size:.79rem;color:#8299b4;
    }
    @media (max-width:1024px){
      .article-layout{grid-template-columns:minmax(0,1fr)}
      .article-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:16px}
      .article-aside .aside-card{margin:0}
      .matrix-grid{grid-template-columns:repeat(3,1fr)}
    }
    @media (max-width:991px){
      .site-header{top:13px}
      .nav-shell{padding:9px 12px 9px 16px}
      .navbar-collapse{padding:13px 4px 4px}
      .navbar-nav{align-items:stretch!important}
      .nav-link{padding:.62rem .75rem!important}
      .nav-action{margin-top:10px;justify-content:center}
      .article-hero{padding-top:140px;min-height:490px}
      .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:28px}
    }
    @media (max-width:768px){
      .container-wide{width:min(var(--container),calc(100% - 30px))}
      .section{padding:66px 0}
      .article-hero{padding-bottom:62px}
      .article-title{font-size:clamp(2rem,9vw,3.2rem)}
      .article-summary{font-size:.96rem}
      .article-body{padding:26px 20px}
      .article-body p{font-size:.96rem}
      .article-aside{grid-template-columns:1fr}
      .matrix-grid{grid-template-columns:repeat(2,1fr)}
      .related-grid{grid-template-columns:1fr}
      .quote-strip{padding:32px 25px}
      .article-cta{padding:34px 26px}
      .article-cta .cta-inner{display:block}
      .article-cta .btn-glow{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
    }
    @media (max-width:520px){
      .container-wide{width:calc(100% - 24px)}
      .nav-shell{width:calc(100% - 20px);border-radius:16px}
      .navbar-brand{font-size:1.1rem}
      .article-hero{min-height:455px;padding:130px 0 52px}
      .breadcrumb-line{font-size:.78rem;margin-bottom:20px}
      .article-meta{gap:10px;font-size:.78rem}
      .matrix-grid{grid-template-columns:1fr}
      .matrix-card{min-height:auto}
      .quote-strip p{font-size:1.14rem}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-brand{grid-column:auto}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin:5px 0}
    }

/* roulang page: category1 */
:root{
      --ink:#eaf3ff;
      --muted:#9fb4cd;
      --line:rgba(172,210,255,.15);
      --bg:#061426;
      --bg-deep:#030b16;
      --panel:rgba(13,37,66,.68);
      --panel-solid:#0b2442;
      --blue:#3e9cff;
      --cyan:#55e4ff;
      --violet:#7485ff;
      --green:#67e6b3;
      --radius:22px;
      --radius-sm:14px;
      --shadow:0 20px 60px rgba(0,0,0,.24);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--bg);color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.72;overflow-x:hidden
    }
    body:before{
      content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;
      background:radial-gradient(circle at 8% 14%,rgba(53,144,255,.13),transparent 27%),
      radial-gradient(circle at 91% 47%,rgba(90,91,255,.12),transparent 30%)
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    .container-wide{width:min(var(--container),calc(100% - 40px));margin:auto}
    .section{padding:92px 0;position:relative}
    .section-soft{background:linear-gradient(180deg,rgba(14,45,79,.28),rgba(5,18,35,.03))}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;color:var(--cyan);
      font-size:.8rem;font-weight:700;letter-spacing:.1em;margin-bottom:14px
    }
    .eyebrow:before{content:"";width:26px;height:1px;background:var(--cyan)}
    .section-title{font-size:clamp(1.8rem,3vw,2.75rem);line-height:1.25;margin:0 0 16px;font-weight:800;letter-spacing:-.04em}
    .section-intro{max-width:700px;color:var(--muted);font-size:1rem;margin:0}
    .glass{
      background:var(--panel);border:1px solid var(--line);
      box-shadow:var(--shadow);backdrop-filter:blur(18px)
    }
    .site-header{position:absolute;z-index:20;top:22px;left:0;width:100%}
    .nav-shell{
      width:min(1240px,calc(100% - 32px));margin:auto;padding:10px 12px 10px 18px;
      border:1px solid rgba(210,235,255,.18);border-radius:20px;
      background:rgba(5,19,37,.74);box-shadow:0 12px 34px rgba(0,0,0,.18);
      backdrop-filter:blur(18px)
    }
    .navbar-brand{font-size:1.2rem;font-weight:800;letter-spacing:-.04em;display:flex;align-items:center;gap:10px}
    .brand-mark{
      width:31px;height:31px;border-radius:10px;display:grid;place-items:center;
      color:#061426;background:linear-gradient(135deg,var(--cyan),var(--blue));font-size:.85rem
    }
    .navbar-toggler{border:0;color:var(--ink);box-shadow:none!important}
    .navbar-toggler-icon{filter:invert(1)}
    .nav-link{
      color:#b7c9df!important;font-size:.9rem;font-weight:600;padding:.54rem .78rem!important;
      border-radius:10px;transition:.25s ease
    }
    .nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(74,159,255,.14)}
    .nav-action{
      display:inline-flex;align-items:center;gap:8px;padding:10px 15px;border-radius:12px;
      color:#071628;background:linear-gradient(100deg,var(--cyan),#83b9ff);
      font-size:.86rem;font-weight:800;transition:.25s ease
    }
    .nav-action:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(77,204,255,.32)}
    .hero{
      min-height:700px;padding:156px 0 78px;position:relative;isolation:isolate;
      background:linear-gradient(90deg,rgba(3,11,22,.95) 5%,rgba(3,11,22,.7) 58%,rgba(3,11,22,.86)),
      url('/assets/images/backpic/back-2.jpg') center/cover no-repeat
    }
    .hero:after{
      content:"";position:absolute;inset:auto 0 0;height:160px;
      background:linear-gradient(transparent,var(--bg));z-index:-1
    }
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(340px,.92fr);gap:40px;align-items:center}
    .crumbs{color:#91aac5;font-size:.82rem;margin-bottom:22px}
    .crumbs span{color:var(--cyan);margin:0 7px}
    .hero h1{
      font-size:clamp(2.55rem,5vw,4.9rem);line-height:1.08;letter-spacing:-.065em;
      font-weight:850;margin:0 0 22px;max-width:700px
    }
    .hero h1 em{font-style:normal;color:var(--cyan)}
    .hero-copy{max-width:660px;color:#c0d0e1;font-size:1.05rem;margin-bottom:30px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
    .btn-glow,.btn-quiet{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:13px;
      padding:13px 20px;font-weight:800;font-size:.92rem;transition:.25s ease
    }
    .btn-glow{background:linear-gradient(110deg,var(--cyan),#619cff);color:#071426;box-shadow:0 0 27px rgba(70,218,255,.3)}
    .btn-glow:hover{color:#061426;transform:translateY(-3px);box-shadow:0 9px 35px rgba(70,218,255,.42)}
    .btn-quiet{border:1px solid rgba(203,229,255,.25);color:#e9f5ff;background:rgba(7,27,50,.36)}
    .btn-quiet:hover{color:#fff;background:rgba(68,145,235,.16);transform:translateY(-2px)}
    .bento{display:grid;grid-template-columns:1.15fr .85fr;gap:14px}
    .bento-main{grid-row:span 2;min-height:330px;padding:25px;border-radius:var(--radius);display:flex;align-items:end;overflow:hidden;position:relative;background:linear-gradient(0deg,rgba(2,12,25,.94),rgba(2,12,25,.16)),url('/assets/images/coverpic/cover-5.webp') center/cover}
    .bento-main h3{font-size:1.55rem;margin:0 0 7px;font-weight:800}
    .bento-main p{font-size:.88rem;color:#c0d2e5;margin:0}
    .bento-card{padding:20px;border-radius:18px;min-height:157px}
    .bento-card i{font-size:1.35rem;color:var(--cyan);margin-bottom:15px}
    .bento-card strong{display:block;font-size:1rem;margin-bottom:5px}
    .bento-card small{color:var(--muted);font-size:.82rem}
    .metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:-32px;position:relative;z-index:3;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
    .metric{padding:25px 22px;background:rgba(9,32,57,.9)}
    .metric strong{display:block;font-size:1.8rem;color:var(--cyan);line-height:1.1}
    .metric span{display:block;color:var(--muted);font-size:.82rem;margin-top:7px}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}
    .matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .service-card{padding:26px;border-radius:18px;min-height:222px;transition:.25s ease}
    .service-card:hover{transform:translateY(-5px);border-color:rgba(85,228,255,.45);background:rgba(19,53,89,.78)}
    .service-card .icon{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;background:rgba(76,178,255,.14);color:var(--cyan);font-size:1.15rem;margin-bottom:19px}
    .service-card h3{font-size:1.08rem;margin:0 0 9px;font-weight:800}
    .service-card p{color:var(--muted);font-size:.88rem;margin:0}
    .split{display:grid;grid-template-columns:.86fr 1.14fr;gap:54px;align-items:center}
    .visual-card{border-radius:var(--radius);overflow:hidden;position:relative;min-height:410px}
    .visual-card img{width:100%;height:410px;object-fit:cover;opacity:.82}
    .visual-card:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(3,13,27,.88),transparent 65%)}
    .visual-caption{position:absolute;left:28px;right:28px;bottom:25px;z-index:1}
    .visual-caption strong{font-size:1.2rem}
    .visual-caption p{color:#b7cce1;font-size:.86rem;margin:6px 0 0}
    .check-list{padding:0;margin:26px 0 0;list-style:none}
    .check-list li{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);color:#c8d8e9}
    .check-list i{color:var(--green);margin-top:5px}
    .comparison{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .compare-card{padding:28px;border-radius:20px}
    .compare-card h3{font-size:1.1rem;margin:0 0 20px}
    .compare-card ul{list-style:none;padding:0;margin:0}
    .compare-card li{padding:10px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:.9rem}
    .compare-card li i{margin-right:10px;color:var(--cyan)}
    .compare-card.highlight{border-color:rgba(85,228,255,.43);background:linear-gradient(145deg,rgba(23,70,111,.75),rgba(10,32,59,.72))}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
    .timeline:before{content:"";position:absolute;top:21px;left:8%;right:8%;height:1px;background:linear-gradient(90deg,var(--blue),var(--cyan));opacity:.45}
    .step{position:relative;z-index:1}
    .step-num{width:43px;height:43px;border-radius:50%;display:grid;place-items:center;background:#0b2c50;border:1px solid rgba(85,228,255,.7);color:var(--cyan);font-weight:800;margin-bottom:17px}
    .step h3{font-size:1rem;margin:0 0 7px}
    .step p{font-size:.84rem;color:var(--muted);margin:0}
    .trust-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .trust-panel{padding:30px;border-radius:20px}
    .quote{font-size:1.15rem;line-height:1.7;color:#dcecff;margin:0 0 17px}
    .quote-by{font-size:.83rem;color:var(--muted)}
    .trust-points{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .trust-point{padding:20px;border-radius:15px;background:rgba(10,35,63,.5);border:1px solid var(--line)}
    .trust-point strong{display:block;color:var(--cyan);font-size:1.35rem}
    .trust-point span{font-size:.8rem;color:var(--muted)}
    .faq-wrap{max-width:850px}
    .accordion-item{background:rgba(11,36,66,.57);border:1px solid var(--line)!important;margin-bottom:10px;border-radius:14px!important;overflow:hidden}
    .accordion-button{background:transparent!important;color:var(--ink)!important;box-shadow:none!important;font-weight:700;padding:19px 21px}
    .accordion-button:after{filter:invert(1);opacity:.7}
    .accordion-body{color:var(--muted);font-size:.9rem;padding:0 21px 20px}
    .cta{
      padding:58px 60px;border-radius:var(--radius);position:relative;overflow:hidden;
      background:linear-gradient(110deg,rgba(30,91,148,.72),rgba(37,52,130,.7));border:1px solid rgba(113,219,255,.36)
    }
    .cta:after{content:"";position:absolute;width:290px;height:290px;right:-80px;top:-130px;border-radius:50%;background:rgba(85,228,255,.18);filter:blur(12px)}
    .cta-content{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta h2{font-size:clamp(1.6rem,3vw,2.35rem);margin:0 0 8px}
    .cta p{margin:0;color:#c2d9ed}
    .site-footer{padding:65px 0 25px;background:var(--bg-deep);border-top:1px solid rgba(153,202,255,.1)}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding-bottom:45px}
    .footer-brand p{max-width:370px;color:var(--muted);font-size:.86rem;margin:18px 0 0}
    .footer-title{font-weight:800;margin-bottom:16px;color:#dcecff}
    .footer-links{display:grid;gap:9px;color:var(--muted);font-size:.86rem}
    .footer-links a{transition:.2s}
    .footer-links a:hover{color:var(--cyan);padding-left:4px}
    .footer-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;color:#7189a4;font-size:.78rem;gap:20px}
    :focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
    @media(max-width:1024px){
      .hero-grid,.split,.trust-grid{grid-template-columns:1fr}
      .hero{min-height:auto}
      .hero-panel{max-width:680px}
      .matrix{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .section{padding:70px 0}
      .hero{padding-top:135px}
      .metric-row{grid-template-columns:repeat(2,1fr);margin-top:20px}
      .section-head{display:block}
      .section-head .section-intro{margin-top:12px}
      .timeline{grid-template-columns:repeat(2,1fr);gap:25px}
      .timeline:before{display:none}
      .cta{padding:38px 25px}
      .cta-content{display:block}
      .cta .btn-glow{margin-top:24px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:35px}
      .footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .container-wide{width:min(var(--container),calc(100% - 28px))}
      .nav-shell{width:calc(100% - 20px)}
      .hero h1{font-size:2.55rem}
      .bento{grid-template-columns:1fr}
      .bento-main{grid-row:auto;min-height:260px}
      .matrix,.comparison,.trust-points{grid-template-columns:1fr}
      .metric strong{font-size:1.45rem}
      .metric{padding:20px 15px}
      .timeline{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-bottom:7px}
    }

/* roulang page: category2 */
:root{
      --ink:#eaf3ff;--muted:#9fb4cd;--line:rgba(172,210,255,.15);
      --bg:#061426;--bg-deep:#030b16;--panel:rgba(13,37,66,.68);
      --panel-solid:#0b2442;--blue:#3e9cff;--cyan:#55e4ff;
      --violet:#7485ff;--green:#67e6b3;--radius:22px;--radius-sm:14px;
      --shadow:0 20px 60px rgba(0,0,0,.24);--container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}
    body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;background:radial-gradient(circle at 8% 14%,rgba(53,144,255,.13),transparent 27%),radial-gradient(circle at 91% 47%,rgba(90,91,255,.12),transparent 30%)}
    a{color:inherit;text-decoration:none} img{max-width:100%;display:block} button,input,textarea{font:inherit}
    .container-wide{width:min(var(--container),calc(100% - 40px));margin:auto}
    .section{padding:92px 0;position:relative}.section-soft{background:linear-gradient(180deg,rgba(14,45,79,.28),rgba(5,18,35,.03))}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:.8rem;font-weight:700;letter-spacing:.1em;margin-bottom:14px}
    .eyebrow:before{content:"";width:26px;height:1px;background:var(--cyan)}
    .section-title{font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.25;margin:0 0 16px;font-weight:800;letter-spacing:-.04em}
    .section-intro{max-width:700px;color:var(--muted);font-size:1rem;margin:0}
    .site-header{position:absolute;z-index:20;top:22px;left:0;width:100%}
    .nav-shell{width:min(1240px,calc(100% - 32px));margin:auto;padding:10px 12px 10px 18px;border:1px solid rgba(210,235,255,.18);border-radius:20px;background:rgba(5,19,37,.74);box-shadow:0 12px 34px rgba(0,0,0,.18);backdrop-filter:blur(18px)}
    .navbar-brand{font-size:1.2rem;font-weight:800;letter-spacing:-.04em;display:flex;align-items:center;gap:10px}
    .brand-mark{width:31px;height:31px;border-radius:10px;display:grid;place-items:center;color:#061426;background:linear-gradient(135deg,var(--cyan),var(--blue));font-size:.85rem}
    .navbar-toggler{border:0;color:var(--ink);box-shadow:none!important}.navbar-toggler-icon{filter:invert(1)}
    .nav-link{color:#b7c9df!important;font-size:.9rem;font-weight:600;padding:.54rem .78rem!important;border-radius:10px;transition:.25s ease}
    .nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(74,159,255,.14)}
    .nav-action{display:inline-flex;align-items:center;gap:8px;padding:10px 15px;border-radius:12px;color:#071628;background:linear-gradient(100deg,var(--cyan),#83b9ff);font-size:.86rem;font-weight:800;transition:.25s ease}
    .nav-action:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(77,204,255,.32)}
    .hero{padding:160px 0 90px;position:relative;isolation:isolate;background:linear-gradient(90deg,rgba(3,11,22,.95) 5%,rgba(3,11,22,.72) 58%,rgba(3,11,22,.86)),url('/assets/images/backpic/back-3.webp') center/cover no-repeat}
    .hero:after{content:"";position:absolute;inset:auto 0 0;height:170px;background:linear-gradient(transparent,var(--bg));z-index:-1}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(340px,.92fr);gap:56px;align-items:center}
    .crumbs{color:#8fa9c5;font-size:.82rem;margin-bottom:25px}.crumbs span{color:var(--cyan);margin:0 7px}
    .hero h1{font-size:clamp(2.6rem,5vw,4.8rem);line-height:1.08;letter-spacing:-.065em;font-weight:850;margin:0 0 22px;max-width:750px}
    .hero h1 span{color:var(--cyan)}.hero-copy{max-width:680px;color:#c0d0e1;font-size:1.06rem;margin-bottom:30px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
    .btn-glow,.btn-quiet{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:13px;padding:13px 20px;font-weight:800;font-size:.92rem;transition:.25s ease}
    .btn-glow{background:linear-gradient(110deg,var(--cyan),#619cff);color:#071426;box-shadow:0 0 27px rgba(70,218,255,.3);border:0}
    .btn-glow:hover{color:#061426;transform:translateY(-3px);box-shadow:0 9px 35px rgba(70,218,255,.42)}
    .btn-quiet{border:1px solid rgba(203,229,255,.25);color:#e9f5ff;background:rgba(7,27,50,.36)}
    .btn-quiet:hover{color:#fff;background:rgba(68,145,235,.16);transform:translateY(-2px)}
    .glass{border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(18px);box-shadow:var(--shadow)}
    .quick-panel{padding:25px;border-radius:var(--radius);position:relative;overflow:hidden}
    .quick-panel:before{content:"";position:absolute;width:190px;height:190px;right:-75px;top:-70px;background:rgba(76,218,255,.16);filter:blur(45px)}
    .panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;position:relative}
    .panel-top strong{font-size:1.05rem}.status{font-size:.75rem;color:var(--green);display:flex;align-items:center;gap:6px}.status:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green)}
    .quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;position:relative}
    .quick-item{padding:18px 15px;border:1px solid var(--line);border-radius:15px;background:rgba(5,24,46,.5);transition:.25s}
    .quick-item:hover{transform:translateY(-4px);border-color:rgba(85,228,255,.45);background:rgba(22,67,108,.55)}
    .quick-item i{color:var(--cyan);font-size:1.2rem;margin-bottom:14px}.quick-item b{display:block;font-size:.94rem}.quick-item small{display:block;color:var(--muted);font-size:.77rem;margin-top:4px}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--line)}
    .metric{padding:25px;background:rgba(10,32,57,.72)}.metric strong{font-size:2rem;line-height:1;color:var(--cyan);display:block;margin-bottom:9px}.metric span{font-size:.84rem;color:var(--muted)}
    .split{display:grid;grid-template-columns:.82fr 1.18fr;gap:52px;align-items:start}.number-list{display:grid;gap:13px}.number-item{display:flex;gap:15px;align-items:flex-start;padding:17px;border-bottom:1px solid var(--line)}
    .number-item b{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:rgba(85,228,255,.12);color:var(--cyan);font-size:.8rem;flex:none}.number-item h3{font-size:1rem;margin:0 0 4px}.number-item p{margin:0;color:var(--muted);font-size:.87rem}
    .matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.matrix-card{padding:23px;border-radius:18px;min-height:190px;transition:.25s}.matrix-card:hover{transform:translateY(-5px);border-color:rgba(94,220,255,.42)}.matrix-card i{font-size:1.3rem;color:var(--cyan)}.matrix-card h3{font-size:1.08rem;margin:17px 0 8px}.matrix-card p{color:var(--muted);font-size:.86rem;margin:0}
    .scene-layout{display:grid;grid-template-columns:1fr 1fr;gap:25px;align-items:stretch}.scene-image{min-height:330px;border-radius:var(--radius);background:linear-gradient(0deg,rgba(2,12,25,.75),rgba(2,12,25,.05)),url('/assets/images/coverpic/cover-6.webp') center/cover}.scene-copy{padding:34px;border-radius:var(--radius)}.check-list{list-style:none;padding:0;margin:22px 0 0}.check-list li{display:flex;gap:10px;color:#c4d5e7;margin:12px 0;font-size:.9rem}.check-list i{color:var(--green);margin-top:5px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);margin-top:32px}.step{padding:25px 20px 0;border-right:1px solid var(--line);position:relative}.step:last-child{border:0}.step:before{content:"";display:block;width:12px;height:12px;border-radius:50%;background:var(--cyan);box-shadow:0 0 18px rgba(85,228,255,.7);position:absolute;top:-7px;left:20px}.step em{font-style:normal;color:var(--cyan);font-size:.76rem}.step h3{font-size:1rem;margin:12px 0 7px}.step p{font-size:.84rem;color:var(--muted);margin:0}
    .insight{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center}.insight img{height:320px;width:100%;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}.quote{padding:30px;border-left:2px solid var(--cyan);background:rgba(12,39,70,.35);border-radius:0 18px 18px 0;color:#d6e5f5;font-size:1.15rem}.quote small{display:block;color:var(--muted);font-size:.82rem;margin-top:18px}
    .faq-wrap{max-width:900px}.accordion-item{background:transparent!important;border:1px solid var(--line)!important;margin-bottom:10px;border-radius:14px!important;overflow:hidden}.accordion-button{background:rgba(13,37,66,.55)!important;color:var(--ink)!important;font-weight:700;box-shadow:none!important;padding:18px 20px}.accordion-button:after{filter:invert(1) brightness(1.5)}.accordion-body{background:rgba(7,25,47,.72);color:var(--muted);font-size:.9rem;padding:0 20px 19px}
    .cta-box{padding:42px;border-radius:var(--radius);display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;background:linear-gradient(115deg,rgba(19,66,111,.85),rgba(20,39,91,.72));border:1px solid rgba(121,202,255,.28);box-shadow:var(--shadow)}.cta-box p{color:#c1d5e9}.request-form{display:grid;gap:11px}.request-form input,.request-form textarea{width:100%;border:1px solid rgba(184,219,255,.2);background:rgba(2,14,29,.55);color:var(--ink);border-radius:11px;padding:12px 14px;outline:none}.request-form textarea{min-height:82px;resize:vertical}.request-form input:focus,.request-form textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(85,228,255,.1)}.request-form .btn-glow{width:100%}
    .site-footer{padding:60px 0 25px;background:var(--bg-deep);border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:50px}.footer-brand p{max-width:380px;color:var(--muted);font-size:.88rem;margin-top:18px}.footer-title{font-weight:800;margin-bottom:15px}.footer-links{display:grid;gap:9px;color:var(--muted);font-size:.86rem}.footer-links a{transition:.2s}.footer-links a:hover{color:var(--cyan);padding-left:4px}.footer-bottom{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);margin-top:40px;padding-top:20px;color:#7189a4;font-size:.78rem}
    @media(max-width:991px){.hero-grid,.split,.scene-layout,.insight,.cta-box{grid-template-columns:1fr;gap:30px}.navbar-collapse{padding:15px 5px 5px}.nav-action{margin-top:8px}.matrix{grid-template-columns:repeat(2,1fr)}.timeline{grid-template-columns:repeat(2,1fr);gap:25px}.step:nth-child(2){border:0}}
    @media(max-width:767px){.container-wide{width:min(100% - 28px,var(--container))}.section{padding:68px 0}.hero{padding:140px 0 70px}.hero h1{font-size:clamp(2.35rem,13vw,3.8rem)}.metrics{grid-template-columns:repeat(2,1fr)}.matrix,.scene-layout{grid-template-columns:1fr}.timeline{grid-template-columns:1fr;gap:0}.step{border-right:0;border-bottom:1px solid var(--line);padding-bottom:22px}.footer-grid{grid-template-columns:1fr;gap:28px}.footer-bottom{display:grid}.quick-grid{gap:9px}}
    @media(max-width:520px){.nav-shell{width:calc(100% - 20px);top:10px}.hero-actions .btn-glow,.hero-actions .btn-quiet{width:100%}.quick-item{padding:15px 12px}.cta-box{padding:25px 20px}.section-title{font-size:1.9rem}}

/* roulang page: category3 */
:root{
      --ink:#eaf3ff;
      --muted:#9fb4cd;
      --line:rgba(172,210,255,.15);
      --bg:#061426;
      --bg-deep:#030b16;
      --panel:rgba(13,37,66,.68);
      --panel-solid:#0b2442;
      --blue:#3e9cff;
      --cyan:#55e4ff;
      --violet:#7485ff;
      --green:#67e6b3;
      --radius:22px;
      --radius-sm:14px;
      --shadow:0 20px 60px rgba(0,0,0,.24);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--bg);color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.72;overflow-x:hidden;
    }
    body:before{
      content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;
      background:radial-gradient(circle at 8% 14%,rgba(53,144,255,.13),transparent 27%),
                 radial-gradient(circle at 91% 47%,rgba(90,91,255,.12),transparent 30%);
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    .container-wide{width:min(var(--container),calc(100% - 40px));margin:auto}
    .section{padding:92px 0;position:relative}
    .section-soft{background:linear-gradient(180deg,rgba(14,45,79,.28),rgba(5,18,35,.03))}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;color:var(--cyan);
      font-size:.78rem;font-weight:700;letter-spacing:.1em;margin-bottom:14px
    }
    .eyebrow:before{content:"";width:26px;height:1px;background:var(--cyan)}
    .section-title{font-size:clamp(1.8rem,3vw,2.75rem);line-height:1.25;margin:0 0 16px;font-weight:800}
    .section-intro{max-width:700px;color:var(--muted);font-size:1rem;margin:0}
    .site-header{position:absolute;z-index:20;top:22px;left:0;width:100%}
    .nav-shell{
      width:min(1240px,calc(100% - 32px));margin:auto;padding:10px 12px 10px 18px;
      border:1px solid rgba(210,235,255,.18);border-radius:20px;background:rgba(5,19,37,.74);
      box-shadow:0 12px 34px rgba(0,0,0,.18);backdrop-filter:blur(18px)
    }
    .navbar-brand{font-size:1.2rem;font-weight:800;letter-spacing:-.04em;display:flex;align-items:center;gap:10px}
    .brand-mark{
      width:31px;height:31px;border-radius:10px;display:grid;place-items:center;color:#061426;
      background:linear-gradient(135deg,var(--cyan),var(--blue));font-size:.85rem
    }
    .navbar-toggler{border:0;color:var(--ink);box-shadow:none!important}
    .navbar-toggler-icon{filter:invert(1)}
    .nav-link{
      color:#b7c9df!important;font-size:.9rem;font-weight:600;padding:.54rem .78rem!important;
      border-radius:10px;transition:.25s ease
    }
    .nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(74,159,255,.14)}
    .nav-action{
      display:inline-flex;align-items:center;gap:8px;padding:10px 15px;border-radius:12px;
      color:#071628;background:linear-gradient(100deg,var(--cyan),#83b9ff);
      font-size:.86rem;font-weight:800;transition:.25s ease
    }
    .nav-action:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(77,204,255,.32)}
    .hero{
      min-height:690px;padding:155px 0 78px;position:relative;isolation:isolate;
      background:linear-gradient(90deg,rgba(3,11,22,.95) 5%,rgba(3,11,22,.72) 55%,rgba(3,11,22,.88)),
      url('/assets/images/backpic/back-6.jpg') center/cover no-repeat
    }
    .hero:after{
      content:"";position:absolute;inset:auto 0 0;height:180px;
      background:linear-gradient(transparent,var(--bg));z-index:-1
    }
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(330px,.9fr);gap:58px;align-items:center}
    .crumbs{display:flex;gap:10px;align-items:center;color:#8ea8c4;font-size:.84rem;margin-bottom:28px}
    .crumbs a:hover{color:var(--cyan)}
    .hero h1{font-size:clamp(2.6rem,5vw,4.8rem);line-height:1.08;letter-spacing:-.065em;font-weight:850;margin:0 0 22px}
    .hero h1 span{color:var(--cyan)}
    .hero-copy{max-width:680px;color:#c0d0e1;font-size:1.04rem;margin-bottom:30px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
    .btn-glow,.btn-quiet{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:13px;
      padding:13px 20px;font-weight:800;font-size:.92rem;transition:.25s ease
    }
    .btn-glow{background:linear-gradient(110deg,var(--cyan),#619cff);color:#071426;box-shadow:0 0 27px rgba(70,218,255,.3)}
    .btn-glow:hover{color:#061426;transform:translateY(-3px);box-shadow:0 9px 35px rgba(70,218,255,.42)}
    .btn-quiet{border:1px solid rgba(203,229,255,.25);color:#e9f5ff;background:rgba(7,27,50,.36)}
    .btn-quiet:hover{color:#fff;background:rgba(68,145,235,.16);transform:translateY(-2px)}
    .glass-panel{
      border:1px solid var(--line);background:rgba(10,33,59,.68);
      box-shadow:var(--shadow);backdrop-filter:blur(18px);border-radius:var(--radius)
    }
    .hero-panel{padding:25px;position:relative;overflow:hidden}
    .hero-panel:before{
      content:"";position:absolute;width:210px;height:210px;background:rgba(76,218,255,.15);
      filter:blur(50px);right:-90px;top:-80px
    }
    .panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;position:relative}
    .panel-label{color:#c4dcff;font-size:.8rem;font-weight:700}
    .status-dot{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:.78rem}
    .status-dot:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green)}
    .signal-map{height:235px;position:relative;border-radius:17px;overflow:hidden;background:linear-gradient(135deg,rgba(62,156,255,.18),rgba(9,24,49,.78)),url('/assets/images/coverpic/cover-10.webp') center/cover}
    .signal-map:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent 38%,rgba(85,228,255,.3) 39%,transparent 40%,transparent 66%,rgba(116,133,255,.35) 67%,transparent 68%)}
    .map-point{position:absolute;width:13px;height:13px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 8px rgba(85,228,255,.15),0 0 22px var(--cyan);z-index:2}
    .point-one{left:28%;top:39%}.point-two{right:24%;top:57%}.point-three{left:52%;bottom:23%}
    .map-caption{position:absolute;left:16px;bottom:14px;color:#eaf8ff;font-size:.78rem;z-index:3}
    .panel-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
    .panel-stat{padding:13px 11px;background:rgba(106,167,236,.08);border:1px solid rgba(172,210,255,.12);border-radius:12px}
    .panel-stat strong{display:block;font-size:1.25rem;color:#fff}.panel-stat span{font-size:.73rem;color:var(--muted)}
    .metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:-30px;position:relative;z-index:4}
    .metric{padding:22px 20px;border:1px solid var(--line);border-radius:17px;background:rgba(11,36,66,.82);box-shadow:0 15px 35px rgba(0,0,0,.16)}
    .metric strong{display:block;color:var(--cyan);font-size:1.8rem;line-height:1.2;margin-bottom:5px}.metric span{color:var(--muted);font-size:.82rem}
    .split-heading{display:flex;justify-content:space-between;gap:28px;align-items:end;margin-bottom:34px}
    .matrix{display:grid;grid-template-columns:1.05fr .95fr;gap:22px}
    .matrix-main{padding:34px;border-radius:var(--radius);background:linear-gradient(145deg,rgba(28,77,130,.55),rgba(8,27,49,.8));border:1px solid var(--line)}
    .matrix-main h3{font-size:1.65rem;margin:0 0 12px}.matrix-main p{color:var(--muted);margin:0 0 25px}
    .matrix-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .matrix-list div{display:flex;gap:10px;align-items:flex-start;padding:14px;border-radius:13px;background:rgba(2,15,30,.28);color:#d6e6f7;font-size:.88rem}
    .matrix-list i{color:var(--cyan);margin-top:4px}
    .matrix-side{display:grid;gap:14px}
    .matrix-item{padding:22px;border-radius:17px;border:1px solid var(--line);background:rgba(12,39,70,.48);transition:.25s ease}
    .matrix-item:hover{transform:translateY(-4px);border-color:rgba(85,228,255,.4)}
    .matrix-item i{color:var(--cyan);font-size:1.3rem}.matrix-item h4{font-size:1.05rem;margin:13px 0 6px}.matrix-item p{color:var(--muted);font-size:.86rem;margin:0}
    .visual-block{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:stretch}
    .visual-block img{width:100%;height:100%;min-height:360px;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
    .visual-copy{padding:36px 0}.visual-copy h2{font-size:2rem;line-height:1.25;margin:0 0 17px}.visual-copy p{color:var(--muted)}
    .check-list{padding:0;margin:24px 0 0;list-style:none}.check-list li{display:flex;gap:12px;margin:13px 0;color:#d8e7f7}.check-list i{color:var(--green);margin-top:5px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-top:34px}
    .step{padding:24px 20px;border-top:2px solid rgba(85,228,255,.48);background:rgba(11,35,63,.48);border-radius:0 0 16px 16px}
    .step-num{color:var(--cyan);font-weight:800;font-size:.78rem;letter-spacing:.08em}.step h3{font-size:1rem;margin:15px 0 8px}.step p{color:var(--muted);font-size:.84rem;margin:0}
    .proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:32px}
    .proof{padding:28px;border:1px solid var(--line);border-radius:18px;background:rgba(12,39,70,.45)}
    .proof blockquote{font-size:1.07rem;line-height:1.8;margin:0 0 20px;color:#dbeafa}.proof small{color:var(--muted)}
    .latest-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:32px;align-items:start}
    .latest-lead{position:sticky;top:28px}.latest-lead p{color:var(--muted)}
    .post-list{display:grid;gap:12px}.post-item{display:flex;gap:18px;padding:17px;border:1px solid var(--line);border-radius:16px;background:rgba(11,36,66,.5);transition:.25s ease}
    .post-item:hover{transform:translateX(4px);border-color:rgba(85,228,255,.42);background:rgba(21,57,96,.58)}
    .post-thumb{width:116px;height:82px;border-radius:11px;object-fit:cover;flex:none}.post-meta{display:flex;gap:12px;color:#7fa0c2;font-size:.75rem;margin-bottom:5px}.post-item h3{font-size:1rem;margin:0 0 4px}.post-item p{color:var(--muted);font-size:.82rem;margin:0}
    .empty-state{padding:24px;border:1px dashed rgba(172,210,255,.25);border-radius:15px;color:var(--muted)}
    .faq-wrap{max-width:900px;margin:32px auto 0}.accordion-item{background:rgba(11,36,66,.56)!important;border:1px solid var(--line)!important;margin-bottom:10px;border-radius:14px!important;overflow:hidden}
    .accordion-button{background:transparent!important;color:var(--ink)!important;font-weight:700;box-shadow:none!important;padding:19px 21px}.accordion-button:after{filter:invert(1)}.accordion-body{color:var(--muted);padding:0 21px 20px}
    .cta-band{padding:54px;border-radius:var(--radius);background:linear-gradient(110deg,rgba(37,110,180,.6),rgba(34,53,125,.58));border:1px solid rgba(121,212,255,.3);display:flex;align-items:center;justify-content:space-between;gap:24px}
    .cta-band h2{margin:0 0 9px;font-size:1.9rem}.cta-band p{margin:0;color:#c8d9eb}
    .site-footer{padding:65px 0 25px;border-top:1px solid rgba(172,210,255,.1);background:rgba(2,12,25,.55)}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px}.footer-brand p{color:var(--muted);max-width:370px;font-size:.88rem;margin-top:16px}.footer-title{font-weight:800;margin-bottom:15px}.footer-links{display:grid;gap:9px;color:var(--muted);font-size:.87rem}.footer-links a{transition:.2s ease}.footer-links a:hover{color:var(--cyan);transform:translateX(3px)}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:42px;padding-top:20px;color:#7590ad;font-size:.78rem}
    :focus-visible{outline:3px solid rgba(85,228,255,.6);outline-offset:3px}
    @media(max-width:992px){
      .hero-grid,.matrix,.visual-block,.latest-layout{grid-template-columns:1fr}
      .metric-row{grid-template-columns:repeat(2,1fr);margin-top:20px}.steps{grid-template-columns:repeat(2,1fr)}
      .latest-lead{position:static}.nav-action{margin:12px 0 4px}
    }
    @media(max-width:768px){
      .container-wide{width:min(var(--container),calc(100% - 28px))}
      .section{padding:67px 0}.hero{min-height:auto;padding:137px 0 76px}.hero h1{font-size:clamp(2.35rem,11vw,3.5rem)}
      .split-heading{display:block}.split-heading .section-intro{margin-top:12px}.matrix-list,.proof-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}
      .cta-band{display:block;padding:34px 25px}.cta-band .btn-glow{margin-top:22px}
    }
    @media(max-width:520px){
      .nav-shell{width:calc(100% - 20px);padding-left:13px}.hero-actions .btn-glow,.hero-actions .btn-quiet{width:100%}
      .metric-row,.steps{grid-template-columns:1fr}.panel-stats{gap:7px}.panel-stat{padding:11px 7px}.panel-stat strong{font-size:1.05rem}
      .visual-copy{padding:8px 0}.visual-block img{min-height:240px}.post-item{display:block}.post-thumb{width:100%;height:160px;margin-bottom:13px}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}
    }

/* roulang page: category4 */
:root{
      --ink:#eaf3ff;--muted:#9fb4cd;--line:rgba(172,210,255,.15);
      --bg:#061426;--bg-deep:#030b16;--panel:rgba(13,37,66,.68);
      --panel-solid:#0b2442;--blue:#3e9cff;--cyan:#55e4ff;
      --violet:#7485ff;--green:#67e6b3;--radius:22px;--radius-sm:14px;
      --shadow:0 20px 60px rgba(0,0,0,.24);--container:1180px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}
    body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;background:radial-gradient(circle at 8% 14%,rgba(53,144,255,.13),transparent 27%),radial-gradient(circle at 91% 47%,rgba(90,91,255,.12),transparent 30%)}
    a{color:inherit;text-decoration:none} img{max-width:100%;display:block} button,input{font:inherit}
    .container-wide{width:min(var(--container),calc(100% - 40px));margin:auto}
    .section{padding:92px 0;position:relative}.section-soft{background:linear-gradient(180deg,rgba(14,45,79,.28),rgba(5,18,35,.03))}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:.8rem;font-weight:700;letter-spacing:.1em;margin-bottom:14px}
    .eyebrow:before{content:"";width:26px;height:1px;background:var(--cyan)}
    .section-title{font-size:clamp(1.8rem,3vw,2.75rem);line-height:1.25;margin:0 0 16px;font-weight:800;letter-spacing:-.04em}
    .section-intro{max-width:700px;color:var(--muted);font-size:1rem;margin:0}
    .site-header{position:absolute;z-index:20;top:22px;left:0;width:100%}
    .nav-shell{width:min(1240px,calc(100% - 32px));margin:auto;padding:10px 12px 10px 18px;border:1px solid rgba(210,235,255,.18);border-radius:20px;background:rgba(5,19,37,.74);box-shadow:0 12px 34px rgba(0,0,0,.18);backdrop-filter:blur(18px)}
    .navbar-brand{font-size:1.2rem;font-weight:800;letter-spacing:-.04em;display:flex;align-items:center;gap:10px}
    .brand-mark{width:31px;height:31px;border-radius:10px;display:grid;place-items:center;color:#061426;background:linear-gradient(135deg,var(--cyan),var(--blue));font-size:.85rem}
    .navbar-toggler{border:0;color:var(--ink);box-shadow:none!important}.navbar-toggler-icon{filter:invert(1)}
    .nav-link{color:#b7c9df!important;font-size:.9rem;font-weight:600;padding:.54rem .78rem!important;border-radius:10px;transition:.25s ease}
    .nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(74,159,255,.14)}
    .nav-action,.btn-glow,.btn-quiet{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:13px;font-weight:800;transition:.25s ease}
    .nav-action{padding:10px 15px;color:#071628;background:linear-gradient(100deg,var(--cyan),#83b9ff);font-size:.86rem}
    .nav-action:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(77,204,255,.32)}
    .hero{min-height:650px;padding:160px 0 80px;position:relative;isolation:isolate;background:linear-gradient(90deg,rgba(3,11,22,.95),rgba(3,11,22,.62),rgba(3,11,22,.87)),url('/assets/images/backpic/back-4.webp') center/cover no-repeat}
    .hero:after{content:"";position:absolute;inset:auto 0 0;height:170px;background:linear-gradient(transparent,var(--bg));z-index:-1}
    .hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:54px;align-items:center}
    .hero-copy{max-width:570px}.hero h1{font-size:clamp(2.5rem,5vw,4.5rem);line-height:1.08;letter-spacing:-.065em;font-weight:850;margin:0 0 22px}.hero h1 span{color:var(--cyan)}
    .hero p{color:#c0d0e1;font-size:1.05rem;margin-bottom:30px}.hero-actions{display:flex;gap:13px;flex-wrap:wrap}
    .btn-glow{padding:13px 20px;background:linear-gradient(110deg,var(--cyan),#619cff);color:#071426;box-shadow:0 0 27px rgba(70,218,255,.3)}
    .btn-glow:hover{color:#061426;transform:translateY(-3px);box-shadow:0 9px 35px rgba(70,218,255,.42)}
    .btn-quiet{padding:13px 20px;border:1px solid rgba(203,229,255,.25);color:#e9f5ff;background:rgba(7,27,50,.36)}
    .btn-quiet:hover{color:#fff;background:rgba(68,145,235,.16);transform:translateY(-2px)}
    .hero-visual{position:relative;transform:rotate(2deg) translateY(18px)}.hero-visual img{width:100%;height:410px;object-fit:cover;border-radius:28px;border:1px solid rgba(184,225,255,.24);box-shadow:var(--shadow)}
    .floating-note{position:absolute;left:-28px;bottom:-25px;padding:18px 20px;border:1px solid var(--line);border-radius:17px;background:rgba(7,27,49,.82);backdrop-filter:blur(14px);box-shadow:var(--shadow)}
    .floating-note strong{display:block;font-size:1.4rem;color:var(--cyan);line-height:1}.floating-note small{color:var(--muted)}
    .metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:-20px;position:relative;z-index:2}
    .metric{padding:24px;border:1px solid var(--line);border-radius:18px;background:rgba(12,39,70,.68);box-shadow:var(--shadow)}.metric b{display:block;font-size:1.8rem;color:var(--cyan)}.metric span{color:var(--muted);font-size:.88rem}
    .split{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:center}.split img{height:380px;width:100%;object-fit:cover;border-radius:24px;border:1px solid var(--line);box-shadow:var(--shadow)}
    .glass{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(14px)}
    .story-list{display:grid;gap:14px}.story-item{display:flex;gap:15px;padding:18px;border-bottom:1px solid var(--line)}.story-item i{color:var(--cyan);padding-top:5px}.story-item h3{font-size:1.05rem;margin:0 0 4px}.story-item p{margin:0;color:var(--muted);font-size:.9rem}
    .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}.scene-card{padding:24px;border:1px solid var(--line);border-radius:18px;background:rgba(12,39,70,.48);transition:.25s ease}.scene-card:hover{transform:translateY(-5px);border-color:rgba(94,220,255,.42)}.scene-card i{color:var(--cyan);font-size:1.3rem}.scene-card h3{font-size:1.08rem;margin:16px 0 7px}.scene-card p{margin:0;color:var(--muted);font-size:.88rem}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:38px}.step{position:relative;padding:24px 22px 20px;border-top:1px solid rgba(85,228,255,.4)}.step:before{content:"";position:absolute;top:-7px;left:22px;width:13px;height:13px;border-radius:50%;background:var(--cyan);box-shadow:0 0 18px var(--cyan)}.step b{color:var(--cyan);font-size:.8rem}.step h3{font-size:1.05rem;margin:10px 0 6px}.step p{color:var(--muted);font-size:.86rem;margin:0}
    .quote-box{padding:38px 42px;border-radius:24px;background:linear-gradient(120deg,rgba(26,79,132,.65),rgba(19,36,86,.55));border:1px solid var(--line);position:relative}.quote-box:before{content:"“";position:absolute;right:35px;top:4px;font-size:7rem;line-height:1;color:rgba(85,228,255,.15)}.quote-box p{font-size:1.25rem;max-width:780px;margin:0;color:#dcecff}.quote-box span{display:block;color:var(--muted);margin-top:18px}
    .faq-list{max-width:850px;margin:34px auto 0}.accordion-item{background:transparent;border:1px solid var(--line)!important;margin-bottom:10px;border-radius:14px!important;overflow:hidden}.accordion-button{background:rgba(13,37,66,.64);color:var(--ink);font-weight:700;box-shadow:none!important}.accordion-button:not(.collapsed){background:rgba(35,91,145,.55);color:var(--cyan)}.accordion-body{background:rgba(8,26,48,.7);color:var(--muted)}
    .cta{padding:54px;border:1px solid rgba(85,228,255,.25);border-radius:26px;background:radial-gradient(circle at 85% 20%,rgba(85,228,255,.18),transparent 30%),rgba(13,37,66,.72);display:flex;justify-content:space-between;gap:30px;align-items:center}.cta h2{margin:0 0 8px;font-size:2rem}.cta p{margin:0;color:var(--muted)}
    .site-footer{padding:58px 0 24px;background:var(--bg-deep);border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:50px}.footer-brand p{color:var(--muted);max-width:380px;margin-top:16px}.footer-title{font-weight:800;margin-bottom:14px}.footer-links{display:grid;gap:9px;color:var(--muted);font-size:.9rem}.footer-links a:hover{color:var(--cyan)}.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:42px;padding-top:20px;border-top:1px solid var(--line);color:#7189a4;font-size:.8rem}
    :focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
    @media(max-width:992px){.hero-grid,.split{grid-template-columns:1fr}.hero{padding-top:145px}.hero-visual{max-width:680px;margin:auto}.scene-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.metric-row{grid-template-columns:repeat(2,1fr);margin-top:20px}.timeline{grid-template-columns:repeat(2,1fr);gap:18px}.footer-grid{grid-template-columns:1fr 1fr}.cta{display:block;padding:32px}.cta .btn-glow{margin-top:22px}}
    @media(max-width:520px){.container-wide{width:min(var(--container),calc(100% - 28px))}.hero{min-height:auto;padding:135px 0 65px}.hero h1{font-size:2.65rem}.hero-visual img{height:280px}.floating-note{left:12px}.scene-grid,.metric-row,.timeline{grid-template-columns:1fr}.section{padding:68px 0}.split img{height:280px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}}

/* roulang page: category5 */
:root{
      --ink:#eaf3ff;
      --muted:#9fb4cd;
      --line:rgba(172,210,255,.15);
      --bg:#061426;
      --bg-deep:#030b16;
      --panel:rgba(13,37,66,.68);
      --panel-solid:#0b2442;
      --blue:#3e9cff;
      --cyan:#55e4ff;
      --violet:#7485ff;
      --green:#67e6b3;
      --radius:22px;
      --radius-sm:14px;
      --shadow:0 20px 60px rgba(0,0,0,.24);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--bg);color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.72;overflow-x:hidden
    }
    body:before{
      content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;
      background:radial-gradient(circle at 8% 14%,rgba(53,144,255,.13),transparent 27%),
      radial-gradient(circle at 91% 47%,rgba(90,91,255,.12),transparent 30%)
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button{font:inherit}
    .container-wide{width:min(var(--container),calc(100% - 40px));margin:auto}
    .section{padding:92px 0;position:relative}
    .section-soft{background:linear-gradient(180deg,rgba(14,45,79,.28),rgba(5,18,35,.03))}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;color:var(--cyan);
      font-size:.8rem;font-weight:700;letter-spacing:.1em;margin-bottom:14px
    }
    .eyebrow:before{content:"";width:26px;height:1px;background:var(--cyan)}
    .section-title{font-size:clamp(1.85rem,3vw,2.75rem);line-height:1.25;margin:0 0 16px;font-weight:800;letter-spacing:-.04em}
    .section-intro{max-width:700px;color:var(--muted);margin:0;font-size:1rem}
    .site-header{position:absolute;z-index:20;top:22px;left:0;width:100%}
    .nav-shell{
      width:min(1240px,calc(100% - 32px));margin:auto;padding:10px 12px 10px 18px;
      border:1px solid rgba(210,235,255,.18);border-radius:20px;background:rgba(5,19,37,.74);
      box-shadow:0 12px 34px rgba(0,0,0,.18);backdrop-filter:blur(18px)
    }
    .navbar-brand{font-size:1.2rem;font-weight:800;letter-spacing:-.04em;display:flex;align-items:center;gap:10px}
    .brand-mark{
      width:31px;height:31px;border-radius:10px;display:grid;place-items:center;color:#061426;
      background:linear-gradient(135deg,var(--cyan),var(--blue));font-size:.85rem
    }
    .navbar-toggler{border:0;color:var(--ink);box-shadow:none!important}
    .navbar-toggler-icon{filter:invert(1)}
    .nav-link{
      color:#b7c9df!important;font-size:.9rem;font-weight:600;padding:.54rem .78rem!important;
      border-radius:10px;transition:.25s ease
    }
    .nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(74,159,255,.14)}
    .nav-action,.btn-glow,.btn-quiet{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      border-radius:13px;font-weight:800;transition:.25s ease
    }
    .nav-action{padding:10px 15px;color:#071628;background:linear-gradient(100deg,var(--cyan),#83b9ff);font-size:.86rem}
    .nav-action:hover,.btn-glow:hover{transform:translateY(-3px);box-shadow:0 9px 35px rgba(70,218,255,.42)}
    .hero{
      min-height:720px;padding:156px 0 82px;position:relative;isolation:isolate;
      background:linear-gradient(90deg,rgba(3,11,22,.96) 4%,rgba(3,11,22,.7) 53%,rgba(3,11,22,.88)),
      url('/assets/images/backpic/back-5.jpg') center/cover no-repeat
    }
    .hero:after{content:"";position:absolute;inset:auto 0 0;height:170px;background:linear-gradient(transparent,var(--bg));z-index:-1}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(330px,.92fr);gap:60px;align-items:center}
    .crumb{color:#9eb7d3;font-size:.84rem;margin-bottom:22px}
    .crumb span{color:var(--cyan)}
    .hero h1{font-size:clamp(2.6rem,5.5vw,5rem);line-height:1.08;letter-spacing:-.07em;font-weight:850;margin:0 0 24px;max-width:720px}
    .hero h1 span{color:var(--cyan)}
    .hero-copy{max-width:680px;color:#c0d0e1;font-size:1.05rem;margin-bottom:30px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
    .btn-glow{padding:13px 21px;background:linear-gradient(110deg,var(--cyan),#619cff);color:#071426;box-shadow:0 0 27px rgba(70,218,255,.3)}
    .btn-quiet{padding:12px 20px;border:1px solid rgba(203,229,255,.25);color:#e9f5ff;background:rgba(7,27,50,.36)}
    .btn-quiet:hover{color:#fff;background:rgba(68,145,235,.16);transform:translateY(-2px)}
    .glass,.metric,.matrix-card,.scene-card,.compare,.timeline,.support-panel,.faq-wrap,.cta-box{
      border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);backdrop-filter:blur(12px)
    }
    .hero-panel{padding:25px;border-radius:var(--radius);position:relative;overflow:hidden}
    .hero-panel:before{content:"";position:absolute;width:210px;height:210px;background:rgba(76,218,255,.15);filter:blur(50px);right:-90px;top:-80px}
    .panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;position:relative}
    .mini-badge{padding:6px 9px;border-radius:8px;background:rgba(115,164,255,.12);color:#c4dcff;font-size:.76rem}
    .pulse{width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 0 6px rgba(103,230,179,.1)}
    .local-map{height:180px;border-radius:16px;overflow:hidden;position:relative;background:linear-gradient(135deg,rgba(27,76,117,.75),rgba(8,25,49,.85)),url('/assets/images/coverpic/cover-15.webp') center/cover}
    .local-map:after{content:"";position:absolute;inset:20% 12%;border:1px dashed rgba(103,230,179,.65);border-radius:45% 55% 48% 52%;transform:rotate(-12deg)}
    .pin{position:absolute;z-index:2;display:grid;place-items:center;width:36px;height:36px;border-radius:50%;color:#071426;background:var(--cyan);box-shadow:0 0 24px rgba(85,228,255,.6)}
    .pin.one{left:29%;top:34%}.pin.two{right:24%;bottom:27%}.pin.three{left:52%;bottom:19%}
    .location-row{display:flex;justify-content:space-between;gap:15px;margin-top:18px;color:var(--muted);font-size:.84rem}
    .location-row strong{display:block;color:var(--ink);font-size:1rem}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .metric{padding:23px;border-radius:17px}
    .metric strong{display:block;color:var(--cyan);font-size:2rem;line-height:1.1;margin-bottom:7px}
    .metric span{color:var(--muted);font-size:.86rem}
    .heading-row{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}
    .matrix{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
    .matrix-card{padding:28px;border-radius:var(--radius);min-height:250px}
    .matrix-card.featured{background:linear-gradient(135deg,rgba(26,87,135,.72),rgba(12,35,65,.68))}
    .matrix-card h3{font-size:1.35rem;margin:15px 0 9px}
    .matrix-card p,.scene-card p,.support-panel p{color:var(--muted);margin:0}
    .icon-box{width:44px;height:44px;display:grid;place-items:center;color:var(--cyan);background:rgba(76,178,255,.14);border-radius:13px}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:21px}
    .tag{padding:6px 10px;border-radius:8px;color:#c7def7;background:rgba(105,157,231,.12);font-size:.78rem}
    .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .scene-card{padding:24px;border-radius:18px;transition:.25s ease}
    .scene-card:hover,.matrix-card:hover,.support-panel:hover{transform:translateY(-5px);border-color:rgba(94,220,255,.42)}
    .scene-card h3{font-size:1.08rem;margin:16px 0 8px}
    .compare{border-radius:var(--radius);overflow:hidden}
    .compare-row{display:grid;grid-template-columns:1fr 1fr 1fr;border-bottom:1px solid var(--line)}
    .compare-row:last-child{border-bottom:0}
    .compare-row div{padding:17px 22px;color:var(--muted);border-right:1px solid var(--line)}
    .compare-row div:last-child{border-right:0}
    .compare-row.head div{color:var(--ink);font-weight:800;background:rgba(73,146,226,.12)}
    .compare-row .highlight{color:var(--green)}
    .timeline{border-radius:var(--radius);padding:28px}
    .timeline-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .step{position:relative;padding:5px 8px 4px 0}
    .step-number{color:var(--cyan);font-size:.8rem;font-weight:800;letter-spacing:.1em}
    .step h3{font-size:1.05rem;margin:11px 0 7px}
    .step p{font-size:.86rem;color:var(--muted);margin:0}
    .support-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:24px;align-items:stretch}
    .support-panel{padding:29px;border-radius:var(--radius)}
    .support-panel img{height:245px;width:100%;object-fit:cover;border-radius:16px;margin-bottom:20px}
    .check-list{list-style:none;padding:0;margin:21px 0 0}
    .check-list li{display:flex;gap:10px;color:#c9d9ea;margin:12px 0;font-size:.9rem}
    .check-list i{color:var(--green);margin-top:5px}
    .faq-wrap{padding:12px 24px;border-radius:var(--radius)}
    .accordion-item{background:transparent;border-bottom:1px solid var(--line)!important}
    .accordion-item:last-child{border-bottom:0!important}
    .accordion-button{background:transparent!important;color:var(--ink)!important;box-shadow:none!important;padding:21px 4px;font-weight:700}
    .accordion-button:after{filter:invert(1);opacity:.7}
    .accordion-body{color:var(--muted);padding:0 4px 21px}
    .cta-box{border-radius:var(--radius);padding:45px 50px;display:flex;justify-content:space-between;align-items:center;gap:25px;background:linear-gradient(120deg,rgba(27,89,141,.7),rgba(12,32,60,.74))}
    .cta-box h2{font-size:clamp(1.7rem,3vw,2.5rem);margin:0 0 10px}
    .cta-box p{color:#c0d3e6;margin:0;max-width:650px}
    .site-footer{padding:68px 0 24px;background:var(--bg-deep);border-top:1px solid rgba(166,210,255,.1)}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:40px;padding-bottom:48px}
    .footer-brand p{max-width:390px;color:var(--muted);font-size:.9rem;margin-top:18px}
    .footer-title{font-weight:800;margin-bottom:17px}
    .footer-links{display:grid;gap:10px;color:var(--muted);font-size:.9rem}
    .footer-links a{transition:.2s}
    .footer-links a:hover{color:var(--cyan);padding-left:4px}
    .footer-bottom{border-top:1px solid var(--line);padding-top:21px;display:flex;justify-content:space-between;gap:15px;color:#7890aa;font-size:.78rem}
    :focus-visible{outline:2px solid var(--cyan);outline-offset:4px}
    @media(max-width:992px){
      .hero-grid,.matrix,.support-layout{grid-template-columns:1fr}
      .hero{min-height:auto}
      .metric-grid{grid-template-columns:repeat(2,1fr)}
      .scene-grid{grid-template-columns:repeat(2,1fr)}
      .timeline-grid{grid-template-columns:repeat(2,1fr)}
      .nav-action{margin-top:10px}
    }
    @media(max-width:768px){
      .section{padding:68px 0}
      .container-wide{width:min(100% - 28px,var(--container))}
      .hero{padding-top:135px}
      .heading-row{display:block}
      .heading-row .section-intro{margin-top:14px}
      .compare-row div{padding:13px 10px;font-size:.82rem}
      .cta-box{display:block;padding:34px 25px}
      .cta-box .btn-glow{margin-top:24px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .nav-shell{width:calc(100% - 20px)}
      .hero h1{font-size:2.55rem}
      .hero-copy{font-size:.96rem}
      .metric-grid,.scene-grid,.timeline-grid{grid-template-columns:1fr}
      .local-map{height:150px}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
      .compare{overflow-x:auto}
      .compare-row{min-width:510px}
    }