/* roulang page: index */
:root{
  --bg-0:#060A13;--bg-1:#0B1220;--bg-2:#101A2C;
  --primary:#1E5BFF;--accent:#FF6A3D;--accent-hi:#FF855F;
  --teal:#46E0C8;--muted:#8FA0BC;--text:#E8EEF9;
  --line:rgba(255,255,255,.10);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-lg:18px;--r-md:12px;--r-btn:999px;--r-img:14px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-hover:0 28px 56px -26px rgba(0,0,0,.95);
  --glow-accent:0 0 0 1px rgba(255,106,61,.55),0 12px 32px -12px rgba(255,106,61,.65);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg-0);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:26px 26px;opacity:.55;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--teal);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:#fff;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  line-height:1;white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
.btn-primary{background:linear-gradient(135deg,#FF6A3D,#FF855F);color:#fff;box-shadow:var(--glow-accent)}
.btn-primary:hover{background:linear-gradient(135deg,#FF855F,#FF9C7C);transform:translateY(-2px);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:rgba(70,224,200,.55);background:rgba(70,224,200,.08);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted);
}
.badge-teal{border-color:rgba(70,224,200,.45);color:var(--teal)}
.badge-accent{border-color:rgba(255,106,61,.5);color:var(--accent)}
.glass{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow);
}
/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,19,.72);
  -webkit-backdrop-filter:blur(16px) saturate(130%);backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid transparent;transition:border-color .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(6,10,19,.9)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand:hover{color:#fff}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,rgba(255,106,61,.9),rgba(255,106,61,.35));
  box-shadow:0 0 0 1px rgba(255,106,61,.5),inset 0 0 18px rgba(0,0,0,.35);
  position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;right:-8px;bottom:-8px;width:24px;height:24px;
  border:2px solid rgba(255,255,255,.75);border-radius:6px;transform:rotate(45deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.08em}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-main a{
  display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:var(--r-btn);
  color:var(--muted);font-size:14.5px;font-weight:500;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-main a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-main a.is-active{color:#fff;background:rgba(30,91,255,.18);box-shadow:inset 0 0 0 1px rgba(70,224,200,.35)}
.nav-actions{display:flex;align-items:center;gap:10px}
/* hero */
.hero{position:relative;overflow:hidden;padding:76px 0 72px;background:var(--bg-0)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(600px 320px at 82% 12%,rgba(70,224,200,.10),transparent 70%),
    radial-gradient(520px 300px at 8% 88%,rgba(30,91,255,.14),transparent 72%),
    url('/assets/images/0aafae1158f8037c.webp') center/cover no-repeat;
  opacity:.5;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg,rgba(6,10,19,.82),rgba(6,10,19,.96));
}
.hero-grid{display:grid;grid-template-columns:6fr 5fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:20px}
.hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.18;font-weight:800;margin-bottom:18px}
.hero h1 .hl{color:var(--accent)}
.hero-lead{font-size:16.5px;line-height:1.9;color:#C6D2E6;max-width:36em}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 26px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:13px;color:#C2CFE4;
}
.hero-chip b{color:var(--teal);font-weight:700}
.hero-card{padding:22px;border-radius:var(--r-lg);position:relative;overflow:hidden}
.hero-card::after{
  content:"";position:absolute;top:-30px;right:-30px;width:130px;height:130px;border-radius:50%;
  border:1px solid rgba(70,224,200,.22);
}
.hero-figure{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-figure-cap{
  position:absolute;left:14px;right:14px;bottom:14px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 14px;border-radius:12px;font-size:12.5px;color:#DCE6F5;
  background:rgba(8,14,26,.72);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.hero-card h2{font-size:15px;font-weight:700;margin:18px 0 12px;color:#fff}
.roadmap{display:flex;flex-direction:column;gap:0}
.roadmap li{position:relative;padding-left:26px;padding-bottom:14px}
.roadmap li:last-child{padding-bottom:0}
.roadmap li::before{
  content:"";position:absolute;left:0;top:6px;width:10px;height:10px;border-radius:50%;
  background:rgba(255,106,61,.9);box-shadow:0 0 0 3px rgba(255,106,61,.16);
}
.roadmap li::after{
  content:"";position:absolute;left:4px;top:18px;bottom:0;width:1px;background:var(--line);
}
.roadmap li:last-child::after{display:none}
.roadmap span{display:block;font-size:13.5px;font-weight:600;color:#E3EBF8}
.roadmap em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);line-height:1.6}
.subscribe{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.subscribe label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:8px}
.subscribe-row{display:flex;gap:8px}
.subscribe-row input{
  flex:1 1 auto;min-width:0;height:42px;padding:0 14px;border-radius:12px;
  background:#0A1120;border:1px solid var(--line);color:var(--text);font-size:14px;
}
.subscribe-row input::placeholder{color:rgba(143,160,188,.6)}
.subscribe-row input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(70,224,200,.15)}
.subscribe-row .btn{min-height:42px;padding:0 18px;font-size:14px}
.subscribe-hint{margin-top:8px;font-size:12px;color:var(--muted)}
/* sections */
.section{padding:88px 0;position:relative;z-index:1}
.section-alt{background:var(--bg-1)}
.section-line{border-top:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.85}
.section-head .badge{margin-bottom:14px}
/* download */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-card{padding:26px 24px;border-radius:var(--r-lg);display:flex;flex-direction:column;gap:10px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(70,224,200,.3)}
.dl-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(70,224,200,.08);border:1px solid rgba(70,224,200,.28);color:var(--teal)}
.dl-card h3{font-size:17px;margin-top:4px}
.dl-card p{font-size:14px;color:var(--muted);line-height:1.75}
.dl-card .btn{margin-top:8px}
.dl-note{margin-top:18px;font-size:13px;color:var(--muted)}
/* matrix */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.mcard{padding:26px 24px;border-radius:var(--r-lg);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.mcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(70,224,200,.3)}
.mcard .ico{width:38px;height:38px;color:var(--teal);margin-bottom:14px;display:block}
.mcard h3{font-size:19px;margin-bottom:10px}
.mcard p{font-size:14.5px;color:var(--muted);line-height:1.8}
.mlink{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--teal)}
.mlink:hover{color:var(--accent)}
/* area tags */
.area-layout{display:grid;grid-template-columns:4fr 7fr;gap:44px;align-items:start}
.area-layout h2{font-size:clamp(23px,2.6vw,30px);margin-bottom:14px}
.area-layout p{color:var(--muted);font-size:15px;margin-bottom:12px}
.tagwall{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;padding:8px 16px;border-radius:999px;font-size:13.5px;
  color:#CBD7EA;background:rgba(255,255,255,.045);border:1px solid var(--line);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.tag:hover{border-color:rgba(70,224,200,.5);color:#fff;background:rgba(70,224,200,.08);transform:translateY(-2px)}
/* rank list */
.rank-list{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.rank-item{padding:20px 18px;border-radius:var(--r-md);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.rank-item:hover{transform:translateY(-3px);border-color:rgba(70,224,200,.32)}
.rank-item .num{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.06em}
.rank-item h3{font-size:15.5px;margin:8px 0 8px;line-height:1.5}
.rank-item p{font-size:13px;color:var(--muted);line-height:1.7}
/* promise */
.promise-bar{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1);
  padding:44px 0;position:relative;
}
.promise-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.promise-item{display:flex;gap:14px;align-items:flex-start}
.promise-item .ico{flex:0 0 auto;width:34px;height:34px;color:var(--teal)}
.promise-item h3{font-size:15.5px;margin-bottom:6px}
.promise-item p{font-size:13.5px;color:var(--muted);line-height:1.7}
/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.step{padding:24px 20px;border-radius:var(--r-lg);position:relative}
.step .dot{
  width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:700;color:var(--teal);
  background:rgba(70,224,200,.08);border:1px solid rgba(70,224,200,.5);
  box-shadow:0 0 14px rgba(70,224,200,.18);margin-bottom:14px;
}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.75}
/* scene */
.scene-layout{display:grid;grid-template-columns:5fr 6fr;gap:44px;align-items:center}
.scene-figure{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.scene-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.scene-list{display:flex;flex-direction:column;gap:14px}
.scene-item{display:flex;gap:16px;padding:18px 20px;border-radius:var(--r-md)}
.scene-item .tagbox{flex:0 0 auto}
.scene-item h3{font-size:15.5px;margin-bottom:6px}
.scene-item p{font-size:13.5px;color:var(--muted);line-height:1.75}
/* news */
.news-layout{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
.news-lead{display:block;padding:0;overflow:hidden;border-radius:var(--r-lg);text-decoration:none;color:inherit}
.news-lead img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg) var(--r-lg) 0 0}
.news-lead-body{padding:22px 24px 26px}
.news-lead-body h3{font-size:21px;line-height:1.45;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-lead-body p{font-size:14.5px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:14px;font-size:12.5px;color:var(--muted)}
.news-side{display:flex;flex-direction:column;gap:0;padding:6px 20px;border-radius:var(--r-lg)}
.news-item{display:block;padding:16px 0;border-bottom:1px solid var(--line);color:inherit;text-decoration:none}
.news-item:last-child{border-bottom:0}
.news-item h3{font-size:15px;line-height:1.55;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s var(--ease)}
.news-item:hover h3{color:var(--teal)}
.news-item p{font-size:13px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-item .news-meta{margin-top:8px}
.empty-state{padding:44px 24px;text-align:center;border-radius:var(--r-lg)}
.empty-state strong{display:block;font-size:16px;color:#fff;margin-bottom:8px}
.empty-state span{font-size:13.5px;color:var(--muted)}
.news-more{margin-top:28px;text-align:center}
/* topics */
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.topic{padding:20px 18px;border-radius:var(--r-md);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.topic:hover{transform:translateY(-3px);border-color:rgba(70,224,200,.32)}
.topic h3{font-size:15.5px;margin-bottom:6px}
.topic p{font-size:13px;color:var(--muted);line-height:1.7}
.topic .badge{margin-top:12px}
/* verify */
.verify-layout{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center}
.verify-figure{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.verify-figure img{width:100%;aspect-ratio:3/4;object-fit:cover}
.verify-list{display:flex;flex-direction:column;gap:18px}
.verify-item{display:flex;gap:14px;align-items:flex-start}
.verify-item .dot{flex:0 0 auto;width:9px;height:9px;border-radius:50%;background:var(--teal);margin-top:11px;box-shadow:0 0 10px rgba(70,224,200,.5)}
.verify-item h3{font-size:16px;margin-bottom:5px}
.verify-item p{font-size:13.5px;color:var(--muted);line-height:1.75}
/* price */
.plan{padding:28px 24px;border-radius:var(--r-lg);display:flex;flex-direction:column;gap:14px;position:relative}
.plan.featured{border-color:rgba(70,224,200,.45);box-shadow:0 0 0 1px rgba(70,224,200,.35),var(--shadow)}
.plan .plan-name{font-size:16px;font-weight:700;color:#fff}
.plan .plan-desc{font-size:13.5px;color:var(--muted);line-height:1.75}
.plan ul{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.plan li{display:flex;gap:10px;font-size:14px;color:#C7D3E6;line-height:1.7}
.plan li svg{flex:0 0 auto;width:16px;height:16px;color:var(--teal);margin-top:5px}
.plan .btn{margin-top:auto}
.plan-badge{position:absolute;top:-11px;right:18px}
/* log */
.log-list{display:flex;flex-direction:column;gap:0}
.log-row{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:20px 0;border-bottom:1px solid var(--line)}
.log-row:last-child{border-bottom:0}
.log-row .log-time{font-size:13px;font-weight:700;color:var(--teal);letter-spacing:.04em}
.log-row h3{font-size:16px;margin-bottom:6px}
.log-row p{font-size:13.5px;color:var(--muted);line-height:1.75}
/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:940px;margin:0 auto}
.faq-item{border-radius:var(--r-md);overflow:hidden}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;color:#fff;text-align:left;
  font-size:16px;font-weight:600;cursor:pointer;line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--teal)}
.faq-q:focus-visible{outline:2px solid var(--teal);outline-offset:-2px}
.faq-sign{position:relative;flex:0 0 auto;width:18px;height:18px}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:0;top:8px;width:18px;height:2px;border-radius:2px;background:var(--teal);
  transition:transform .25s var(--ease),background .25s var(--ease);
}
.faq-sign::after{transform:rotate(90deg)}
.faq-item.is-open .faq-sign::after{transform:rotate(0)}
.faq-item.is-open .faq-sign::before,.faq-item.is-open .faq-sign::after{background:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 22px 20px;border-left:2px solid var(--accent);margin-left:22px;padding-left:18px}
.faq-a-inner p{font-size:14.5px;color:var(--muted);line-height:1.85}
/* cta */
.cta-layout{display:grid;grid-template-columns:5fr 6fr;gap:48px;align-items:start}
.cta-info h2{font-size:clamp(24px,3vw,34px);line-height:1.3;margin-bottom:16px}
.cta-info p{color:var(--muted);font-size:15px;line-height:1.85;margin-bottom:22px}
.cta-points{display:flex;flex-direction:column;gap:14px}
.cta-point{display:flex;align-items:flex-start;gap:12px;font-size:14px;color:#C8D4E7}
.cta-point svg{flex:0 0 auto;width:20px;height:20px;color:var(--teal);margin-top:4px}
.form-card{padding:28px 26px;border-radius:var(--r-lg)}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card .form-sub{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--muted);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;background:#0A1120;border:1px solid var(--line);border-radius:12px;
  color:var(--text);padding:0 14px;height:46px;font-size:14.5px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(143,160,188,.6)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(70,224,200,.15)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-privacy{margin-top:12px;font-size:12.5px;color:var(--muted);line-height:1.7}
.form-msg{margin-top:12px;font-size:13px;color:var(--teal);display:none}
.form-msg.is-show{display:block}
/* footer */
.site-footer{background:#050810;border-top:1px solid var(--line);padding:64px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:30em}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13.5px;color:var(--muted)}
.footer-col a:hover{color:var(--teal)}
.footer-col p{font-size:13.5px;color:var(--muted);line-height:1.8}
.footer-area{display:flex;flex-wrap:wrap;gap:8px}
.footer-area span{font-size:12.5px;color:var(--muted);padding:5px 11px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 24px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--muted);
}
/* mobile tabs */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:rgba(8,13,24,.94);border-top:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar ul{display:flex;margin:0;padding:0;list-style:none}
.tabbar li{flex:1}
.tabbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:56px;font-size:11.5px;color:var(--muted);position:relative;
}
.tabbar a svg{width:22px;height:22px;stroke-width:1.6}
.tabbar a.is-active{color:var(--accent)}
.tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--accent);box-shadow:0 0 10px rgba(255,106,61,.8);
}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}
@media (max-width:1024px){
  .nav-main{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .section{padding:64px 0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .rank-list{grid-template-columns:repeat(2,1fr)}
  .promise-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .area-layout,.scene-layout,.verify-layout,.cta-layout,.news-layout{grid-template-columns:1fr;gap:32px}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .verify-figure img{aspect-ratio:16/10}
}
@media (max-width:768px){
  .tabbar{display:block}
  body{padding-bottom:68px}
  .nav-wrap{height:64px}
  .nav-actions .btn{min-height:40px;padding:0 16px;font-size:13.5px}
  .hero{padding:52px 0 48px}
  .section{padding:48px 0}
  .grid-3,.dl-grid,.grid-2{grid-template-columns:1fr}
  .promise-grid,.steps{grid-template-columns:1fr}
  .log-row{grid-template-columns:1fr;gap:6px}
  .field-row{grid-template-columns:1fr}
  .news-side{padding:6px 16px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero h1{font-size:28px}
  .section-head h2{font-size:23px}
  .rank-list,.topic-grid{grid-template-columns:1fr}
  .brand-name{font-size:14px}
  .brand-sub{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-btns .btn{flex:1 1 100%}
}

/* roulang page: article */
:root{
  --bg-0:#060A13;--bg-1:#0B1220;--bg-2:#101A2C;
  --primary:#1E5BFF;--accent:#FF6A3D;--accent-hi:#FF855F;
  --teal:#46E0C8;--muted:#8FA0BC;--text:#E8EEF9;
  --line:rgba(255,255,255,.10);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-lg:18px;--r-md:12px;--r-btn:999px;--r-img:14px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-hover:0 28px 56px -26px rgba(0,0,0,.95);
  --glow-accent:0 0 0 1px rgba(255,106,61,.55),0 12px 32px -12px rgba(255,106,61,.65);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::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);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  padding-bottom:0;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:26px 26px;opacity:.55;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--teal);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;line-height:1;white-space:nowrap;text-decoration:none;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
.btn-primary{background:linear-gradient(135deg,#FF6A3D,#FF855F);color:#fff;box-shadow:var(--glow-accent)}
.btn-primary:hover{background:linear-gradient(135deg,#FF855F,#FF9C7C);transform:translateY(-2px);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:rgba(70,224,200,.55);background:rgba(70,224,200,.08);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted);
}
.badge-teal{border-color:rgba(70,224,200,.45);color:var(--teal)}
.badge-accent{border-color:rgba(255,106,61,.5);color:var(--accent)}
/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,19,.72);
  -webkit-backdrop-filter:blur(16px) saturate(130%);backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid transparent;transition:border-color .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(6,10,19,.9)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand:hover{color:#fff}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,rgba(255,106,61,.9),rgba(255,106,61,.35));
  box-shadow:0 0 0 1px rgba(255,106,61,.5),inset 0 0 18px rgba(0,0,0,.35);
  position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;right:-8px;bottom:-8px;width:24px;height:24px;
  border:2px solid rgba(255,255,255,.75);border-radius:6px;transform:rotate(45deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.08em}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-main a{
  display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:var(--r-btn);
  color:var(--muted);font-size:14.5px;font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-main a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-main a.is-active{color:#fff;background:rgba(30,91,255,.18);box-shadow:inset 0 0 0 1px rgba(70,224,200,.35)}
.nav-actions{display:flex;align-items:center;gap:10px}
/* article band */
.article-band{
  position:relative;padding:44px 0 12px;background:var(--bg-0);overflow:hidden;
}
.article-band::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(520px 260px at 88% 0%,rgba(70,224,200,.10),transparent 72%),
    radial-gradient(420px 240px at 0% 100%,rgba(30,91,255,.13),transparent 74%);
  opacity:.9;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);position:relative;z-index:1;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--teal)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:#C6D2E6;max-width:62ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* layout */
.article-main{padding:8px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start;margin-top:20px}
.article-col{min-width:0}
.article-head{padding:6px 0 24px;border-bottom:1px solid var(--line);margin-bottom:28px}
.article-head .badge{margin-bottom:16px}
.article-head h1{
  font-size:clamp(26px,3.4vw,38px);line-height:1.32;font-weight:800;
  letter-spacing:.01em;word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:16px;font-size:13.5px;color:var(--muted);
}
.article-meta .dot{opacity:.45}
/* article body */
.article-body{
  max-width:760px;font-size:16px;line-height:1.9;color:#D6E0EF;
  word-break:break-word;
}
.article-body p{margin:0 0 20px;line-height:1.9}
.article-body h2{
  font-size:24px;font-weight:700;line-height:1.45;color:#fff;
  margin:40px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--accent),rgba(255,106,61,.35));
}
.article-body h3{font-size:20px;font-weight:600;color:#fff;margin:30px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:#EAF1FB;margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;list-style:none}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:22px;margin-bottom:10px;line-height:1.85;
}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--teal);box-shadow:0 0 0 3px rgba(70,224,200,.14);
}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li;padding-left:30px}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.1em;
  width:20px;height:20px;border-radius:6px;display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--teal);
  background:rgba(70,224,200,.12);border:1px solid rgba(70,224,200,.35);
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);border-left:3px solid var(--teal);
  color:#C2CFE4;font-style:italic;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--teal);text-decoration:underline;text-underline-offset:4px}
.article-body a:hover{color:var(--accent)}
.article-body img{border-radius:12px;margin:22px auto;border:1px solid var(--line)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body strong{color:#fff;font-weight:600}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body th{background:rgba(70,224,200,.10);color:var(--teal);font-weight:600}
.article-body tr:last-child td{border-bottom:none}
.article-body tbody tr:hover td{background:rgba(255,255,255,.03)}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}
/* aside */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.panel{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
}
.panel h2,.panel h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.panel h3 i{color:var(--teal);font-size:14px}
.mini-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.mini-list li{font-size:14px;color:#C2CFE4;line-height:1.6;display:flex;gap:10px;align-items:flex-start}
.mini-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:50%;
  background:var(--teal);box-shadow:0 0 0 3px rgba(70,224,200,.12);
}
.mini-list a{font-size:14px}
.dl-card .dl-row{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.dl-btn{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 16px;border-radius:var(--r-md);font-size:14px;font-weight:600;color:#E8EEF9;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.dl-btn:hover{color:#fff;border-color:rgba(70,224,200,.5);background:rgba(70,224,200,.08);transform:translateY(-2px)}
.dl-btn i{color:var(--teal);font-size:16px}
.dl-btn small{display:block;font-size:11.5px;font-weight:400;color:var(--muted);letter-spacing:.02em}
.dl-note{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.7}
/* summary */
.summary-card{
  margin-top:40px;padding:26px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
}
.summary-card h2{font-size:20px;font-weight:700;color:#fff;margin-bottom:16px}
.summary-list{list-style:none;display:flex;flex-direction:column;gap:14px;counter-reset:sum}
.summary-list li{counter-increment:sum;position:relative;padding-left:40px;font-size:15px;color:#C6D2E6;line-height:1.8}
.summary-list li::before{
  content:counter(sum);position:absolute;left:0;top:2px;
  width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:var(--teal);
  background:rgba(70,224,200,.10);border:1px solid rgba(70,224,200,.35);
}
.summary-list b{color:#fff;font-weight:600}
/* related */
.rel-section{margin-top:52px}
.rel-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:20px}
.rel-head h2{font-size:22px;font-weight:700;color:#fff}
.rel-head span{font-size:13px;color:var(--muted)}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;border-radius:var(--r-lg);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(70,224,200,.3);box-shadow:var(--shadow-hover)}
.rel-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;border-bottom:1px solid var(--line)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-body h3{font-size:15.5px;font-weight:600;line-height:1.55;color:#EAF1FB;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body h3 a{color:inherit}
.rel-body h3 a:hover{color:var(--teal)}
.rel-body p{font-size:13px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-link{margin-top:auto;font-size:13px;font-weight:600;color:var(--teal)}
.rel-link:hover{color:var(--accent)}
/* pager */
.pager{display:flex;flex-wrap:wrap;gap:14px;margin-top:40px}
.pager a{flex:1 1 240px;min-width:0}
.pager .pager-item{
  display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:var(--r-md);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:#C6D2E6;
  font-size:14px;transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease),color .2s var(--ease);
}
.pager .pager-item span{font-size:12px;color:var(--muted)}
.pager .pager-item:hover{border-color:rgba(70,224,200,.5);background:rgba(70,224,200,.08);color:#fff;transform:translateY(-2px)}
.pager .back-home{display:flex;align-items:center;justify-content:center}
/* end cta */
.end-cta{
  margin-top:56px;padding:32px;border-radius:var(--r-lg);
  background:
    radial-gradient(420px 220px at 88% 10%,rgba(70,224,200,.14),transparent 70%),
    linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--shadow);
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;
}
.end-cta h2{font-size:22px;font-weight:700;color:#fff;margin-bottom:8px}
.end-cta p{font-size:14.5px;color:#C2CFE4;line-height:1.8;max-width:52ch}
.end-cta .cta-btns{display:flex;flex-wrap:wrap;gap:12px}
/* empty */
.empty-state{
  padding:48px 28px;text-align:center;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow);
}
.empty-state i{font-size:30px;color:var(--teal);margin-bottom:14px;display:block}
.empty-state h1{font-size:24px;font-weight:700;margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:22px}
/* footer */
.site-footer{background:#050810;border-top:1px solid var(--line);padding:56px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:36px}
.footer-brand p{margin-top:14px;font-size:13.5px;color:var(--muted);line-height:1.85;max-width:34ch}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.03em}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.footer-col ul a{font-size:13.5px;color:var(--muted)}
.footer-col ul a:hover{color:var(--teal)}
.footer-col p{font-size:13.5px;color:var(--muted);line-height:1.85}
.footer-col p a{font-size:13.5px}
.footer-area{display:flex;flex-wrap:wrap;gap:8px}
.footer-area span{
  font-size:12.5px;color:var(--muted);padding:4px 10px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding:18px 0 22px;border-top:1px solid var(--line);
  font-size:12.5px;color:rgba(143,160,188,.85);
}
/* mobile tab */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:rgba(8,13,24,.92);
  -webkit-backdrop-filter:blur(16px) saturate(130%);backdrop-filter:blur(16px) saturate(130%);
  border-top:1px solid var(--line);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
}
.mobile-tab ul{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:2px}
.mobile-tab a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  min-height:48px;font-size:11.5px;color:var(--muted);border-radius:12px;position:relative;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.mobile-tab a i{font-size:17px}
.mobile-tab a.is-active{color:var(--accent);background:rgba(255,106,61,.08)}
.mobile-tab a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:20px;height:3px;border-radius:999px;background:var(--accent);box-shadow:0 0 10px rgba(255,106,61,.8);
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap}
  .article-aside .panel{flex:1 1 260px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .rel-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .end-cta{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:900px){
  .nav-main{display:none}
  .nav-wrap{height:64px}
  .mobile-tab{display:block}
  body{padding-bottom:76px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .article-band{padding:30px 0 8px}
  .article-head h1{font-size:26px}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-body h3{font-size:18px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .end-cta{padding:24px}
  .end-cta h2{font-size:19px}
  .summary-card{padding:20px}
  .panel{padding:18px}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .brand-name{font-size:14.5px}
  .brand-sub{font-size:10px}
  .nav-actions .btn{padding:0 16px;font-size:13.5px;min-height:40px}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .article-head h1{font-size:23px;line-height:1.38}
  .article-body{font-size:15.5px}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .pager{flex-direction:column}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:6px}
  .summary-list li{padding-left:36px;font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A13;--bg-1:#0B1220;--bg-2:#101A2C;
  --primary:#1E5BFF;--accent:#FF6A3D;--accent-hi:#FF855F;
  --teal:#46E0C8;--muted:#8FA0BC;--text:#E8EEF9;
  --line:rgba(255,255,255,.10);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-lg:18px;--r-md:12px;--r-btn:999px;--r-img:14px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-hover:0 28px 56px -26px rgba(0,0,0,.95);
  --glow-accent:0 0 0 1px rgba(255,106,61,.55),0 12px 32px -12px rgba(255,106,61,.65);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::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);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:26px 26px;opacity:.55;
}
h1,h2,h3,h4{margin:0;color:#fff;font-weight:700;line-height:1.35;letter-spacing:.01em}
h1{font-size:clamp(27px,3.5vw,38px);font-weight:800;line-height:1.25}
h2{font-size:clamp(22px,2.6vw,32px);font-weight:700}
h3{font-size:19px;font-weight:600;line-height:1.5}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
img{max-width:100%;display:block;border-radius:var(--r-img);border:1px solid var(--line)}
a{color:var(--teal);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent)}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;line-height:1;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
.btn-primary{background:linear-gradient(135deg,#FF6A3D,#FF855F);color:#fff;box-shadow:var(--glow-accent)}
.btn-primary:hover{background:linear-gradient(135deg,#FF855F,#FF9C7C);transform:translateY(-2px);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:rgba(70,224,200,.55);background:rgba(70,224,200,.08);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted);white-space:nowrap;
}
.badge-teal{border-color:rgba(70,224,200,.45);color:var(--teal)}
.badge-accent{border-color:rgba(255,106,61,.5);color:var(--accent)}
/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,19,.72);
  -webkit-backdrop-filter:blur(16px) saturate(130%);backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid transparent;transition:border-color .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(6,10,19,.9)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand:hover{color:#fff}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,rgba(255,106,61,.9),rgba(255,106,61,.35));
  box-shadow:0 0 0 1px rgba(255,106,61,.5),inset 0 0 18px rgba(0,0,0,.35);
  position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;right:-8px;bottom:-8px;width:24px;height:24px;
  border:2px solid rgba(255,255,255,.75);border-radius:6px;transform:rotate(45deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.08em}
.nav-main{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-main a{
  display:inline-flex;align-items:center;min-height:40px;padding:0 13px;border-radius:var(--r-btn);
  color:var(--muted);font-size:14.5px;font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-main a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-main a.is-active{color:#fff;background:rgba(30,91,255,.18);box-shadow:inset 0 0 0 1px rgba(70,224,200,.35)}
.nav-actions{display:flex;align-items:center;gap:10px}
/* page head */
.page-head{
  position:relative;overflow:hidden;
  background:var(--bg-1);border-bottom:1px solid var(--line);
  padding:44px 0 40px;
}
.page-head::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(520px 260px at 88% 6%,rgba(70,224,200,.14),transparent 70%),
             radial-gradient(420px 240px at 4% 96%,rgba(30,91,255,.16),transparent 72%),
             url('/assets/images/9dfd90ea9c4787f0.webp') center/cover no-repeat;
  opacity:.34;
}
.page-head::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg,rgba(11,18,32,.86),rgba(11,18,32,.97));
}
.page-head .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--teal)}
.crumbs span{color:#5A6A85}
.page-head h1{max-width:900px}
.page-head h1 .hl{color:var(--accent)}
.page-sub{margin-top:14px;color:#C0CCE0;font-size:15.5px;max-width:760px}
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.filter-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 16px;border-radius:999px;font-size:13px;
  color:#C6D2E6;background:rgba(255,255,255,.05);border:1px solid var(--line);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.filter-chip:hover{border-color:rgba(70,224,200,.5);color:var(--teal);background:rgba(70,224,200,.08)}
.filter-chip i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:inline-block}
/* sections */
.section{padding:80px 0;position:relative}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:34px;max-width:820px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--teal);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--teal);display:inline-block}
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(70,224,200,.3)}
/* key points */
.points-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.point-card{padding:22px}
.point-card h3{font-size:16.5px;margin-bottom:8px}
.point-card p{font-size:13.8px;color:var(--muted);line-height:1.75;margin:0}
.point-icon{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(70,224,200,.35);background:rgba(70,224,200,.08);margin-bottom:14px;
}
.point-icon svg{width:19px;height:19px;stroke:var(--teal);fill:none;stroke-width:1.6}
/* article list */
.list-stack{display:flex;flex-direction:column;gap:18px}
.list-item{
  display:grid;grid-template-columns:190px 1fr;gap:22px;align-items:start;
  padding:20px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.list-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(70,224,200,.3)}
.list-thumb{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line)}
.list-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;border:0;border-radius:0}
.list-body h3{margin-bottom:8px;font-size:18px}
.list-body p{color:var(--muted);font-size:14px;line-height:1.8;margin:0 0 12px}
.list-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:#6E7E99}
/* checklist */
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.check-col h3{
  font-size:16px;color:var(--teal);margin-bottom:18px;
  display:flex;align-items:center;gap:10px;
}
.check-col h3::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--accent)}
.check-item{display:grid;grid-template-columns:38px 1fr;gap:10px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.08)}
.check-item:last-child{border-bottom:0}
.check-num{font-size:22px;font-weight:700;color:rgba(70,224,200,.75);line-height:1.3;font-family:"DIN Alternate","Barlow",system-ui,sans-serif}
.check-item strong{display:block;color:#fff;font-size:15px;font-weight:600;margin-bottom:2px}
.check-item span{color:var(--muted);font-size:13.6px;line-height:1.7}
/* news list */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{display:flex;flex-direction:column;overflow:hidden;padding:0}
.news-card .news-thumb{overflow:hidden;border-bottom:1px solid var(--line)}
.news-card .news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border:0;border-radius:0;transition:transform .3s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card-body h3{font-size:16px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-body p{font-size:13.5px;color:var(--muted);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:12.5px;color:#6E7E99}
.empty-state{
  padding:44px 24px;text-align:center;border-radius:var(--r-lg);
  border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.03);color:var(--muted);font-size:14px;
}
/* topic cards */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.topic-card{padding:0;overflow:hidden}
.topic-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border:0;border-radius:0}
.topic-card .topic-body{padding:18px 20px 20px}
.topic-card h3{font-size:16px;margin-bottom:6px}
.topic-card p{font-size:13.6px;color:var(--muted);margin:0}
/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-box{
  display:flex;gap:16px;align-items:flex-start;padding:20px;
  border-radius:var(--r-md);background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.step-box .sq{
  width:40px;height:40px;flex:0 0 auto;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;color:var(--accent);
  border:1px solid rgba(255,106,61,.45);background:rgba(255,106,61,.10);
  font-family:"DIN Alternate","Barlow",system-ui,sans-serif;
}
.step-box h3{font-size:15.5px;margin-bottom:4px}
.step-box p{font-size:13.4px;color:var(--muted);margin:0;line-height:1.7}
/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  background:rgba(255,255,255,.035);transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item[open]{border-color:rgba(255,106,61,.45);background:rgba(255,255,255,.05)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-size:15.5px;font-weight:600;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:14px;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:400;color:var(--teal);border:1px solid rgba(70,224,200,.4);
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq-item[open] summary::after{content:"−";color:var(--accent);border-color:rgba(255,106,61,.5)}
.faq-item summary:focus-visible{outline:2px solid var(--teal);outline-offset:-3px}
.faq-answer{padding:0 22px 20px;border-left:2px solid rgba(255,106,61,.55);margin-left:22px;color:var(--muted);font-size:14px;line-height:1.85}
/* cta */
.cta-wrap{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:linear-gradient(150deg,rgba(30,91,255,.16),rgba(11,18,32,.9));
  padding:38px;
}
.cta-wrap::before{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(70,224,200,.22),transparent 65%);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:12px}
.cta-inner p{color:#C0CCE0;font-size:14.5px;margin-bottom:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.prep-card{padding:22px}
.prep-card h3{font-size:15px;margin-bottom:12px;color:var(--teal)}
.prep-card ul li{
  display:flex;gap:10px;align-items:flex-start;font-size:13.8px;color:#C6D2E6;
  padding:6px 0;line-height:1.7;
}
.prep-card ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);margin-top:9px;flex:0 0 auto}
/* download */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dl-card{text-align:left;padding:26px}
.dl-card h3{font-size:17px;margin-bottom:6px}
.dl-card p{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.dl-card .btn{width:100%}
.dl-icon{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(70,224,200,.35);background:rgba(70,224,200,.08);margin-bottom:16px}
.dl-icon svg{width:22px;height:22px;stroke:var(--teal);fill:none;stroke-width:1.6}
/* footer */
.site-footer{background:#050810;border-top:1px solid var(--line);padding:64px 0 28px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;margin-bottom:44px}
.footer-brand p{color:var(--muted);font-size:13.6px;line-height:1.85;margin-top:16px;max-width:34em}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:var(--muted);font-size:13.6px}
.footer-col ul li a:hover{color:var(--teal)}
.footer-col p{color:var(--muted);font-size:13.2px;line-height:1.8}
.footer-area{display:flex;flex-wrap:wrap;gap:8px}
.footer-area span{
  display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;
  color:#9FB0CB;background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.footer-bottom{
  border-top:1px solid var(--line);padding-top:22px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:#6E7E99;font-size:12.5px;
}
/* mobile tab */
.mobile-tab{display:none}
@media (max-width:1024px){
  .points-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-inner{grid-template-columns:1fr}
  .section{padding:64px 0}
  .nav-main{display:none}
}
@media (max-width:900px){
  .nav-actions .btn{display:none}
}
@media (max-width:768px){
  body{padding-bottom:66px}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;
    background:rgba(6,10,19,.94);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-tab a{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    min-height:58px;padding:8px 0;font-size:11.5px;color:var(--muted);position:relative;
  }
  .mobile-tab a.is-active{color:var(--accent)}
  .mobile-tab a.is-active::before{
    content:"";position:absolute;top:0;width:24px;height:2px;border-radius:2px;
    background:var(--accent);box-shadow:0 0 10px rgba(255,106,61,.9);
  }
  .mobile-tab svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7}
  .section{padding:48px 0}
  .points-grid,.news-grid,.topic-grid,.steps,.dl-grid,.check-grid{grid-template-columns:1fr}
  .list-item{grid-template-columns:112px 1fr;gap:14px;padding:14px}
  .list-body h3{font-size:15.5px}
  .list-body p{font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .cta-wrap{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .container{padding:0 18px}
  .page-head{padding:32px 0 30px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
  h1{font-size:24px}
  h2{font-size:21px}
  .filter-chip{font-size:12px;padding:6px 13px}
  .list-item{grid-template-columns:1fr}
  .list-thumb img{aspect-ratio:16/9}
  .check-num{font-size:19px}
  .dl-card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}