/* roulang page: index */
:root{
  --bg:#0C0E10;
  --surface:#15181B;
  --surface-2:#1D2126;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --text:#F2EEE6;
  --text-2:#A6ADB5;
  --text-3:#727A83;
  --primary:#FF6A00;
  --primary-hover:#FF7D1E;
  --primary-active:#DE5900;
  --primary-glow:rgba(255,106,0,.22);
  --primary-soft:rgba(255,106,0,.12);
  --success:#2FE6A0;
  --warning:#FFC94D;
  --r-large:20px;
  --r-card:12px;
  --r-chip:999px;
  --shadow-float:0 12px 36px rgba(0,0,0,.45);
  --container:1280px;
  --header-h:72px;
  --space-section:96px;
  --ease-out:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;padding:0;margin:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html,body{width:100%;overflow-x:hidden}
body{
  background:var(--bg);
  color:var(--text);
  font-family:Inter,"SF Pro Display","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
  box-shadow:0 0 0 6px var(--primary-glow);
  border-radius:6px;
}
button{font-family:inherit;cursor:pointer;color:inherit}
.container{max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.section{padding:var(--space-section) 0;position:relative}

/* reveal */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.reveal.is-in{opacity:1;transform:none}

/* badge / tab label */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;letter-spacing:.28em;
  text-transform:uppercase;color:var(--primary);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--primary)}
.eyebrow .en{color:var(--text-3);letter-spacing:.06em;font-weight:500}

/* sticky top */
.site-top{
  position:sticky;top:0;z-index:100;
}
.header{
  height:var(--header-h);
  background:rgba(12,14,16,.75);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
@supports not ((backdrop-filter:blur(14px)) or (-webkit-backdrop-filter:blur(14px))){
  .header{background:#0C0E10}
}
.header__bar{
  height:var(--header-h);
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--surface-2);
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  font-size:18px;font-weight:800;color:var(--text);
  position:relative;overflow:hidden;
}
.brand__mark::before{
  content:"";position:absolute;right:-8px;top:-8px;
  width:18px;height:18px;border-radius:22px;
  background:var(--primary);opacity:.85;
}
.brand__mark span{position:relative;z-index:2}
.brand__text{
  font-weight:750;font-size:20px;letter-spacing:.02em;color:var(--text);
  display:flex;flex-wrap:wrap;align-items:center;line-height:1.3;
}
.brand__text small{font-weight:700;color:var(--text-2);font-size:14px;margin-left:4px}
.header__cta{
  flex-shrink:0;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-card);
  font-size:15px;font-weight:700;
  line-height:1;
  border:1px solid transparent;
  transition:background .2s var(--ease-out),color .2s,border-color .2s,transform .2s,box-shadow .2s;
  text-align:center;white-space:nowrap;
  min-height:44px;padding:0 20px;
}
.btn svg{width:18px;height:18px;flex:none;transition:transform .25s var(--ease-out)}
.btn:hover svg{transform:translateY(2px)}
.btn:active{transform:translateY(1px) scale(.99)}
.btn--primary{
  background:var(--primary);color:#160902;
  box-shadow:0 8px 24px var(--primary-glow);
}
.btn--primary:hover{background:var(--primary-hover);box-shadow:0 12px 32px var(--primary-glow);color:#160902}
.btn--primary:active{background:var(--primary-active);box-shadow:0 6px 16px var(--primary-glow)}
.btn--ghost{
  background:transparent;color:var(--text);
  border-color:var(--line-strong);
}
.btn--ghost:hover{border-color:rgba(255,106,0,.6);background:rgba(255,106,0,.08);color:var(--text)}
.btn--ghost:active{background:rgba(255,106,0,.16)}
.btn--large{min-height:56px;padding:0 28px;font-size:16px;border-radius:14px}
.btn--block{width:min(100%,320px)}

/* category nav */
.catnav{
  background:rgba(12,14,16,.92);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.catnav__inner{
  display:flex;align-items:center;gap:8px;
  padding:12px 0;
  overflow-x:auto;scrollbar-width:none;
}
.catnav__inner::-webkit-scrollbar{display:none}
.navlink{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 16px;
  border-radius:999px;
  font-size:13px;font-weight:600;
  color:var(--text-2);
  border:1px solid transparent;
  transition:all .25s var(--ease-out);
  white-space:nowrap;
  flex-shrink:0;
}
.navlink:hover{color:var(--text);border-color:var(--line-strong)}
.navlink.is-active{
  background:#FFF;color:#111416;
}
.navlink .dot{
  width:5px;height:5px;border-radius:50%;background:var(--primary);
  margin-right:8px;flex-shrink:0;
}

/* hero */
.hero{
  padding:96px 0 72px;
  background:var(--bg);
  position:relative;overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-position:center 10%;
  background-size:cover;
  opacity:.13;
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;
  top:-160px;right:-120px;width:480px;height:480px;
  background:radial-gradient(circle,rgba(255,106,0,.16),transparent 62%);
  pointer-events:none;
}
.hero__grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(320px,.9fr);gap:56px;align-items:center}
.hero__badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.03);
  font-size:12px;font-weight:600;letter-spacing:.1em;
  color:var(--text-2);margin-bottom:28px;
}
.hero__badge i{
  width:8px;height:8px;border-radius:50%;
  background:var(--success);
  box-shadow:0 0 0 4px rgba(47,230,160,.12);
}
.hero__title{
  font-size:clamp(40px,5.5vw,68px);
  font-weight:800;line-height:1.12;letter-spacing:.01em;
  color:var(--text);
  margin-bottom:22px;
  text-wrap:balance;
}
.hero__title .hl{
  color:var(--primary);
  position:relative;
}
.hero__title .hl::after{
  content:"";position:absolute;left:0;right:2px;bottom:4px;height:8px;
  background:var(--primary-soft);z-index:-1;
}
.hero__copy{
  font-size:16px;line-height:1.95;color:var(--text-2);
  max-width:560px;margin-top:20px;
}
.hero__copy strong{color:#fff;font-weight:650}
.hero__actions{
  margin-top:36px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.hero__chips{
  margin-top:40px;display:flex;gap:10px;flex-wrap:wrap;
}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  height:34px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  font-size:12px;font-weight:600;color:var(--text-2);
}
.chip svg{width:14px;height:14px;color:var(--primary)}

/* hero visual */
.hero__visual{position:relative}
.hero__frame{
  position:relative;
  border-radius:24px;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:0 30px 70px rgba(0,0,0,.4);
  overflow:hidden;
  aspect-ratio:4/4.8;
}
.hero__frame img{
  width:100%;height:100%;object-fit:cover;
  transition:opacity .6s;
}
.hero__float{
  position:absolute;left:-26px;bottom:36px;
  background:rgba(21,24,27,.9);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--line-strong);
  border-radius:16px;
  padding:14px 18px;
  display:flex;align-items:center;gap:12px;
  box-shadow:var(--shadow-float);
}
.hero__float .pulse{width:9px;height:9px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(47,230,160,.15)}
.hero__float b{display:block;font-size:13px;line-height:1.5}
.hero__float span{display:block;font-size:11px;line-height:1.5;color:var(--text-3)}

/* section heading */
.heading-row{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:44px;
}
.heading-row h2{
  font-size:clamp(28px,3.8vw,44px);
  font-weight:780;line-height:1.25;letter-spacing:.01em;
}
.heading-row h2 .or{
  color:var(--primary);
}
.heading-row p{color:var(--text-2);max-width:340px;font-size:14px;line-height:1.85}
.arrow-row{display:flex;gap:8px}
.icon-btn{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);
  background:transparent;
  display:inline-grid;place-items:center;
  transition:all .25s var(--ease-out);
  color:var(--text-2);
}
.icon-btn:hover{border-color:rgba(255,106,0,.5);background:var(--primary-soft);color:#fff}
.icon-btn:active{transform:scale(.95)}
.icon-btn[disabled]{opacity:.3;pointer-events:none}
.icon-btn svg{width:18px;height:18px}

/* showcase screenshot track */
.showcase{background:var(--bg)}
.screenshot-track{
  display:flex;gap:20px;
  overflow-x:auto;
  scroll-behavior:smooth;
  scrollbar-width:none;
  padding:4px 4px 24px;
  scroll-snap-type:x proximity;
}
.screenshot-track::-webkit-scrollbar{display:none}
.screenshot-card{
  position:relative;
  flex:0 0 calc((100% - 40px)/3);
  border-radius:var(--r-large);
  background:var(--surface);
  border:1px solid var(--line);
  overflow:hidden;
  scroll-snap-align:start;
  transition:border-color .3s,transform .3s;
  min-height:0;
}
.screenshot-card:hover{transform:translateY(-4px);border-color:rgba(255,106,0,.4)}
.screenshot-card__max{
  border-radius:14px;overflow:hidden;margin:10px;
  background:#100;aspect-ratio:16/9;
}
.screenshot-card__max img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .8s var(--ease-out);
}
.screenshot-card:hover .screenshot-card__max img{transform:scale(1.03)}
.screenshot-card__cap{
  padding:16px 18px 18px;
}
.screenshot-card__cap .no{
  font-size:12px;letter-spacing:.1em;color:var(--text-3);font-weight:600;
}
.screenshot-card__cap b{
  display:block;font-size:16px;font-weight:700;margin-top:2px;
}
.screenshot-card__cap p{
  font-size:13px;color:var(--text-2);line-height:1.7;margin-top:6px;
}
.screenshot-card .corner{
  position:absolute;top:14px;left:14px;
  background:rgba(12,14,16,.72);
  border:1px solid var(--line-strong);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  font-size:11px;
  letter-spacing:.08em;
  padding:4px 12px;
  border-radius:999px;
  color:#fff;
}
@media(min-width:993px){
  .screenshot-card:hover{box-shadow:0 18px 44px rgba(0,0,0,.36)}
}
@media(max-width:992px){
  .screenshot-card{flex-basis:calc((100% - 20px)/1.6)}
}
@media(max-width:520px){
  .screenshot-card{flex-basis:88%}
}

/* compat */
.compat{
  background:var(--surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.compat__grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
.compat-card{
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:16px;
  padding:28px 22px 20px;
  display:flex;flex-direction:column;
  min-height:290px;
  transition:border-color .25s,transform .25s;
}
.compat-card:hover{border-color:rgba(255,106,0,.35);transform:translateY(-3px)}
.compat-card__icon{
  width:48px;height:48px;border-radius:14px;
  background:var(--primary-soft);
  border:1px solid rgba(255,106,0,.18);
  display:grid;place-items:center;
  margin-bottom:20px;
  color:var(--primary);
}
.compat-card__icon svg{width:24px;height:24px}
.compat-card h3{font-size:19px;font-weight:700;margin-bottom:14px;letter-spacing:.01em}
.compat-card ul{list-style:none;display:grid;gap:9px}
.compat-card li{
  position:relative;padding-left:18px;
  color:var(--text-2);font-size:13px;line-height:1.75;
}
.compat-card li::before{
  content:"";position:absolute;left:0;top:11px;
  width:5px;height:5px;border-radius:50%;background:var(--primary);
}
.status-dot{
  display:inline-flex;align-items:center;gap:7px;
  margin-top:16px;font-size:12px;font-weight:650;
}
.status-dot i{width:7px;height:7px;border-radius:50%;flex:none}
.status-dot.green i{background:var(--success);box-shadow:0 0 8px rgba(47,230,160,.4)}
.status-dot.orange i{background:var(--warning);box-shadow:0 0 8px rgba(255,201,77,.35)}
.compat__foot{
  margin-top:34px;
  display:flex;align-items:center;justify-content:center;gap:10px;
  color:var(--text-2);font-size:14px;
}
.compat__foot a{
  color:var(--primary);font-weight:700;
  border-bottom:1px dashed rgba(255,106,0,.5);
  transition:color .2s,border-color .2s;
}
.compat__foot a:hover{color:var(--primary-hover);border-bottom-color:var(--primary-hover)}

/* reviews */
.review-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
  align-items:start;
}
.review-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-large);
  padding:30px 26px 24px;
  transition:border-color .25s,transform .25s;
}
.review-card:nth-child(2){margin-top:34px}
.review-card:nth-child(3){margin-top:10px}
.review-card:hover{transform:translateY(-3px);border-color:rgba(255,106,0,.32)}
.review-card__mark{
  font-family:Georgia,serif;
  font-size:58px;line-height:.7;height:30px;
  color:var(--primary);opacity:.75;
}
.review-card__stars{
  display:flex;gap:3px;margin:14px 0 14px;
  color:var(--warning);
}
.review-card__stars svg{width:17px;height:17px}
.review-card p{
  font-size:16px;line-height:1.85;color:#d9d4cb;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.review-card__by{
  margin-top:22px;font-size:12px;color:var(--text-3);
  border-top:1px solid var(--line);padding-top:16px;
  line-height:1.9;
}
.review-card__by b{color:var(--text-2);font-weight:650}
.review-summary{
  margin-top:46px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border-top:1px dashed var(--line-strong);
  padding-top:30px;font-size:13px;color:var(--text-2);
}
.review-summary .score{
  display:flex;align-items:baseline;gap:14px;
}
.review-summary .score b{font-size:34px;color:var(--text);font-weight:800}
.review-summary .score span{color:var(--text-3)}
.review-summary a{color:var(--primary);font-weight:700;border-bottom:1px solid rgba(255,106,0,.4)}
.review-summary a:hover{border-bottom-color:var(--primary-hover)}

/* download CTA */
.download-cta-section{background:var(--surface)}
.download-cta{
  position:relative;
  border-radius:28px;
  background:#1A1D21;
  border:1px solid var(--line);
  overflow:hidden;
  padding:64px 56px;
}
.download-cta::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  opacity:.07;
}
.download-cta::after{
  content:"";position:absolute;left:15%;bottom:-130px;width:420px;height:260px;
  background:radial-gradient(ellipse,rgba(255,106,0,.14),transparent 70%);pointer-events:none;
}
.download-cta__inner{
  position:relative;z-index:3;
  display:grid;grid-template-columns:minmax(0,1.2fr) .8fr;gap:48px;align-items:center;
}
.download-cta h2{
  font-size:clamp(27px,3.4vw,38px);
  line-height:1.3;font-weight:780;margin-bottom:16px;
}
.download-cta h2 span{color:var(--primary)}
.download-cta p{color:var(--text-2);font-size:14px;line-height:1.85;max-width:520px}
.download-cta__btns{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;
}
.btn--download-soft{
  display:inline-flex;align-items:center;gap:14px;
  min-width:220px;
  background:#23272B;
  border:1px solid var(--line-strong);
  border-radius:16px;
  padding:14px 18px;
  color:var(--text);
  transition:all .25s var(--ease-out);
}
.btn--download-soft .platform{opacity:.75;color:var(--text-2);font-size:12px;font-weight:600;display:block;line-height:1.4}
.btn--download-soft b{font-size:16px;font-weight:720;display:block;line-height:1.3}
.btn--download-soft .os-icon{
  width:40px;height:40px;flex:none;
  background:var(--primary-soft);
  border-radius:12px;display:grid;place-items:center;color:var(--primary);
}
.btn--download-soft .os-icon svg{width:20px;height:20px}
.btn--download-soft:last-child .os-icon{color:var(--text)}
.btn--download-soft:hover{border-color:rgba(255,106,0,.55);background:#282C32}
.btn--download-soft:active{background:var(--surface-2)}
.download-cta__meta{
  display:flex;gap:8px;align-items:center;color:var(--text-3);
  font-size:12px;margin-top:16px;
}
.qr-group{display:flex;gap:16px}
.qr-card{
  text-align:center;
  flex:1;
  background:rgba(12,14,16,.72);
  border:1px solid var(--line-strong);
  border-radius:20px;
  padding:22px 18px 18px;
  transition:border-color .25s;
}
.qr-card:hover{border-color:rgba(255,106,0,.42)}
.qrbox{
  width:112px;height:112px;margin:0 auto 12px;
  background:
    radial-gradient(circle 1.8px at 22px 24px, rgba(242,238,230,.55) 0 1.8px,transparent 2px),
    radial-gradient(circle 1.8px at 44px 24px, rgba(242,238,230,.55) 0 1.8px,transparent 2px),
    radial-gradient(circle 1.8px at 66px 24px, rgba(242,238,230,.55) 0 1.8px,transparent 2px),
    radial-gradient(circle 1.8px at 88px 24px, rgba(242,238,230,.55) 0 1.8px,transparent 2px);
  background-color:#181B1F;
  background-repeat:no-repeat;
  background-size:100% 100%;
  border:1px solid var(--line-strong);
  border-radius:14px;
  position:relative;
}
.qrbox::before{
  content:"";position:absolute;inset:12px;
  border:1px solid rgba(255,106,0,.35);border-radius:8px;
}
.qr-card b{display:block;font-size:13px;line-height:1.6;color:var(--text)}
.qr-card span{font-size:11px;color:var(--text-3)}

/* news CMS */
.news-section{background:var(--bg)}
.news__grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:24px;align-items:start;
}
.news-card-main{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-large);
  overflow:hidden;
  transition:border-color .3s,transform .3s,box-shadow .3s;
  display:block;
  height:100%;
}
.news-card-main:hover{border-color:rgba(255,106,0,.36);transform:translateY(-4px);box-shadow:0 18px 50px rgba(0,0,0,.24)}
.news-card-main__img{
  aspect-ratio:16/8;overflow:hidden;background:#131416;
}
.news-card-main__img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease-out)}
.news-card-main:hover .news-card-main__img img{transform:scale(1.02)}
.news-card-main__body{padding:24px 24px 20px}
.news-meta{
  display:flex;align-items:center;flex-wrap:wrap;
  gap:10px;font-size:12px;color:var(--text-3);
}
.news-meta .tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary-soft);
  color:var(--primary);
  border-radius:999px;
  padding:3px 10px;font-weight:700;
}
.news-card-main h3{
  font-size:21px;line-height:1.5;font-weight:740;
  margin:14px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card-main p{
  color:var(--text-2);font-size:14px;line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-link{
  margin-top:20px;display:inline-flex;align-items:center;gap:8px;
  color:var(--primary);font-weight:700;font-size:13px;
}
.news-card-main:hover .news-link svg{transform:translateX(4px)}
.news-link svg{width:16px;height:16px;transition:transform .25s}
.news-list{
  display:grid;
  gap:10px;
}
.news-list-item{
  display:flex;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px 18px;
  transition:border-color .25s,background .25s;
}
.news-list-item:hover{border-color:rgba(255,106,0,.38);background:var(--surface-2)}
.news-list-item .idx{
  flex:none;
  width:32px;height:32px;border-radius:9px;
  background:rgba(255,255,255,.035);
  color:var(--text-3);
  border:1px solid var(--line);
  display:grid;place-items:center;
  font-size:13px;font-weight:700;
}
.news-list-item:nth-child(1) .idx,
.news-list-item:nth-child(2) .idx{color:var(--primary)}
.news-list-item__body{flex:1;min-width:0}
.news-list-item h4{
  font-size:14px;font-weight:680;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:4px;
}
.news-list-item p{
  font-size:12px;color:var(--text-3);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;line-height:1.7;
}
.news-list-item .tm{
  font-size:11px;color:var(--text-3);white-space:nowrap;
  margin-top:4px;display:inline-flex;align-items:center;gap:6px;
}
.empty-state{
  grid-column:1 / -1;
  background:var(--surface);
  border:1px dashed var(--line-strong);
  border-radius:var(--r-large);
  padding:56px 20px;
  text-align:center;
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:50%;
  border:1px solid var(--line-strong);
  margin:0 auto 18px;
  display:grid;place-items:center;color:var(--text-3);
}
.empty-state .empty-icon svg{width:24px;height:24px}
.empty-state b{display:block;font-size:16px;color:var(--text);margin-bottom:6px}
.empty-state span{font-size:13px;color:var(--text-3)}

/* footer */
.footer{
  background:#0A0C0E;
  border-top:1px solid var(--line);
  padding:60px 0 0;
}
.footer__top{
  display:grid;
  grid-template-columns:1.4fr .6fr .8fr 1.2fr;
  gap:36px;
  padding-bottom:42px;
}
.footer .brand__text{font-size:17px}
.footer__desc{
  margin-top:18px;font-size:13px;color:var(--text-3);line-height:1.9;max-width:320px;
}
.footer h4{
  font-size:14px;font-weight:700;margin-bottom:18px;color:#fff;
  letter-spacing:.04em;
}
.footer a{color:var(--text-2);font-size:13px;transition:color .2s}
.footer a:hover{color:var(--primary)}
.footer__links{display:grid;gap:10px}
.footer__safe{
  background:rgba(255,255,255,.02);
  border:1px dashed rgba(255,255,255,.1);
  border-radius:14px;
  padding:16px 20px;
  font-size:12px;line-height:1.9;
  color:var(--text-3);
  display:flex;gap:12px;align-items:flex-start;
}
.footer__safe svg{flex:none;width:18px;height:18px;color:var(--text-2);margin-top:3px}
.footer__bottom{
  border-top:1px solid var(--line);
  padding:22px 0;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}
.footer__bottom .f-domain{color:var(--text-2);font-weight:600}

/* responsive */
@media(max-width:1200px){
  .hero__grid{gap:30px}
}
@media(max-width:992px){
  :root{--space-section:76px}
  .hero{padding:68px 0 60px}
  .hero__grid{grid-template-columns:1fr}
  .hero__visual{max-width:390px;margin:40px auto 0}
  .heading-row{flex-wrap:wrap}
  .compat__grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .review-card:nth-child(2){margin-top:0}
  .review-card:nth-child(3){grid-column:1/-1;margin-top:0;max-width:calc(50% - 11px);justify-self:center}
  .download-cta{padding:42px 28px}
  .download-cta__inner{grid-template-columns:1fr}
  .qr-group{max-width:360px}
  .news__grid{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .container{padding-left:20px;padding-right:20px}
  .header__bar{padding-left:20px;padding-right:20px}
  .hero__actions .btn{min-width:140px}
  .btn--large{min-height:52px;padding:0 18px}
}
@media(max-width:576px){
  .hero{padding:56px 0 48px}
  .hero__chips .chip{font-size:11px;height:30px}
  .screenshot-card{flex-basis:calc(100% - 42px)}
  .compat__grid{grid-template-columns:1fr}
  .compat-card{min-height:auto}
  .review-grid{grid-template-columns:1fr}
  .review-card__by{font-size:11px}
  .review-summary{flex-direction:column;align-items:flex-start}
  .footer__top{grid-template-columns:1fr;gap:26px;padding-bottom:26px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .download-cta{padding:36px 20px}
  .download-cta__btns{flex-direction:column;width:100%}
  .download-cta__btns .btn--download-soft{width:100%}
  .heading-row{margin-bottom:30px}
}

/* roulang page: article */
:root {
  --bg: #0C0E10;
  --surface: #15181B;
  --surface-2: #1D2126;
  --surface-3: #20252A;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.18);
  --text: #F2EEE6;
  --text-2: #A6ADB5;
  --text-3: #727A83;
  --primary: #FF6A00;
  --primary-hover: #FF7D1E;
  --primary-active: #DE5900;
  --primary-glow: rgba(255,106,0,0.22);
  --primary-soft: rgba(255,106,0,0.12);
  --success: #2FE6A0;
  --warning: #FFC94D;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-md: 0 12px 36px rgba(0,0,0,0.45);
  --font-sans: "Inter", "SF Pro Display", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --font-serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", "SimSun", serif;
  --ease: 0.3s ease-out;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  font-size: 16px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 84px 84px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 74%);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, textarea {
  font: inherit;
  color: inherit;
}

::selection {
  background: rgba(255,106,0,0.35);
  color: #fff;
}

.container {
  width: min(1280px, 100% - 48px);
  margin-inline: auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 120;
  height: 72px;
  background: rgba(13,15,18,0.98);
  border-bottom: 1px solid var(--line);
}

@supports ((-webkit-backdrop-filter: blur(12px)) or (backdrop-filter: blur(12px))) {
  .header {
    background: rgba(12,14,16,0.86);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }
}

.header__bar {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand__mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--primary);
  color: #0C0E10;
  display: grid;
  place-items: center;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.02em;
  position: relative;
  box-shadow: 0 8px 20px var(--primary-glow);
  flex: 0 0 auto;
}

.brand__mark::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 10px;
  height: 10px;
  border-radius: 0 0 9px 0;
  background: #0C0E10;
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.12;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand__text small {
  margin-top: 4px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text-3);
  text-transform: uppercase;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  cursor: pointer;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: background-color var(--ease), border-color var(--ease), box-shadow var(--ease), transform 0.15s ease, color var(--ease);
  text-decoration: none;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.btn svg {
  width: 17px;
  height: 17px;
  transition: transform 0.25s ease;
}

.btn--primary {
  background: var(--primary);
  color: #1A0D04;
  box-shadow: 0 8px 24px var(--primary-glow);
  min-height: 44px;
  padding: 0 18px;
  font-weight: 800;
}

.btn--primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 12px 32px var(--primary-glow);
  transform: translateY(-1px);
}

.btn--primary:active {
  background: var(--primary-active);
  transform: translateY(1px);
  box-shadow: 0 4px 16px var(--primary-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--line-strong);
  min-height: 40px;
  padding: 0 16px;
  font-size: 14px;
}

.btn--ghost:hover {
  color: var(--text);
  border-color: var(--primary);
  background: var(--primary-soft);
}

.header__cta:hover svg {
  transform: translateY(2px);
}

.nav-tabs-wrap {
  position: sticky;
  top: 72px;
  z-index: 110;
  background: rgba(12,14,16,0.98);
  border-bottom: 1px solid var(--line);
}

@supports ((-webkit-backdrop-filter: blur(14px)) or (backdrop-filter: blur(14px))) {
  .nav-tabs-wrap {
    background: rgba(12,14,16,0.84);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
  }
}

.nav-tabs__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 62px;
  overflow-x: auto;
  scrollbar-width: none;
  white-space: nowrap;
}

.nav-tabs__inner::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 17px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--text-2);
  background: transparent;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all 0.28s ease;
  flex: 0 0 auto;
}

.nav-tab:hover {
  color: var(--text);
  border-color: rgba(255,106,0,0.66);
  background: var(--primary-soft);
  transform: translateY(-1px);
}

.nav-tab:active {
  transform: translateY(1px);
}

.nav-tab:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.nav-tab.is-active {
  background: #F6F1E8;
  color: #0C0E10;
  border-color: #F6F1E8;
  font-weight: 800;
  box-shadow: 0 6px 18px rgba(0,0,0,0.28);
}

.article-main {
  position: relative;
  z-index: 1;
}

.article-hero {
  position: relative;
  padding: 54px 0 46px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-image: linear-gradient(120deg, rgba(12,14,16,0.96) 0%, rgba(12,14,16,0.86) 56%, rgba(29,24,19,0.66) 100%), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center 30%;
}

.article-hero .container {
  position: relative;
  z-index: 2;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 0.02em;
  margin-bottom: 18px;
  gap: 3px;
}

.breadcrumbs a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}

.breadcrumbs a:hover {
  color: var(--primary);
}

.breadcrumbs .crumb-sep {
  color: rgba(255,255,255,0.26);
  margin: 0 5px;
}

.article-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 13px;
  border-radius: 999px;
  border: 1px solid rgba(255,106,0,0.5);
  background: var(--primary-soft);
  color: var(--primary-hover);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 18px;
}

.article-kicker .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 3px rgba(255,106,0,0.15);
}

.article-title {
  font-size: clamp(30px, 4.4vw, 46px);
  font-weight: 820;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 940px;
  margin-bottom: 22px;
  text-wrap: balance;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 24px;
  font-size: 12.5px;
  color: var(--text-3);
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-chip svg {
  width: 15px;
  height: 15px;
  opacity: 0.7;
}

.article-container {
  padding-top: 24px;
  padding-bottom: 96px;
}

.article-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: clamp(26px, 5vw, 72px) clamp(20px, 4.8vw, 72px);
}

.entry-content {
  max-width: 820px;
  margin: 0 auto;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.95;
  color: #EAE4DA;
  word-break: break-word;
}

.entry-content > * + * {
  margin-top: 0;
}

.entry-content p {
  margin-bottom: 28px;
}

.entry-content h1,
.entry-content h2,
.entry-content h3,
.entry-content h4 {
  font-family: var(--font-sans);
  font-weight: 800;
  line-height: 1.4;
  color: var(--text);
  margin: 44px 0 18px;
}

.entry-content h2 {
  font-size: clamp(22px, 3vw, 30px);
  border-left: 3px solid var(--primary);
  padding-left: 16px;
}

.entry-content h3 {
  font-size: 22px;
}

.entry-content h4 {
  font-size: 18px;
}

.entry-content a {
  color: var(--primary-hover);
  text-decoration: underline;
  text-decoration-color: rgba(255,106,0,0.35);
  text-underline-offset: 4px;
  transition: text-decoration-color 0.2s ease;
}

.entry-content a:hover {
  text-decoration-color: var(--primary);
}

.entry-content ul,
.entry-content ol {
  margin: 0 0 28px;
  padding-left: 1.5em;
}

.entry-content li {
  margin-bottom: 8px;
}

.entry-content ul li::marker {
  color: var(--primary);
}

.entry-content blockquote {
  margin: 34px 0;
  padding: 18px 22px;
  background: var(--primary-soft);
  border-left: 3px solid var(--primary);
  border-radius: 0 12px 12px 0;
  color: var(--text-2);
}

.entry-content blockquote p:last-child {
  margin-bottom: 0;
}

.entry-content img {
  border-radius: 16px;
  border: 1px solid var(--line);
  margin: 30px 0;
  background: var(--surface-2);
}

.entry-content figure {
  margin: 30px 0;
}

.entry-content figure img {
  margin: 0 0 8px;
}

.entry-content figcaption {
  font-family: var(--font-sans);
  font-size: 12.5px;
  color: var(--text-3);
  text-align: center;
}

.entry-content code {
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.88em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 6px;
  color: #FFCF9E;
}

.entry-content pre {
  margin: 30px 0;
  background: #0A0C0D;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
}

.entry-content pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: #E7DFD3;
}

.entry-content table {
  width: 100%;
  margin: 30px 0;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 14px;
}

.entry-content th,
.entry-content td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
}

.entry-content th {
  background: var(--surface-2);
  color: var(--text);
  font-weight: 700;
}

.entry-content hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: 40px 0;
}

.article-tags {
  max-width: 820px;
  margin: 42px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.article-tags__label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-3);
  margin-right: 6px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 3px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.02);
  color: var(--text-2);
  transition: all 0.2s ease;
}

a.tag:hover {
  color: var(--primary-hover);
  border-color: rgba(255,106,0,0.55);
  background: var(--primary-soft);
}

.article-bottom-nav {
  max-width: 820px;
  margin: 34px auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13.5px;
}

.article-bottom-nav .back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-3);
  transition: color 0.2s ease;
}

.article-bottom-nav .back-link:hover {
  color: var(--primary-hover);
}

.article-bottom-nav .return-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-3);
  font-size: 13px;
  transition: color 0.2s ease;
}

.article-bottom-nav .return-link:hover {
  color: var(--primary-hover);
}

.related-section {
  margin-top: 64px;
}

.related-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.related-head h2 {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.3;
  font-weight: 800;
}

.section-tagline {
  font-size: 14px;
  color: var(--text-3);
  max-width: 520px;
}

.related-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 20px;
}

.related-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.35s ease-out;
  position: relative;
  min-width: 0;
}

.related-card:hover {
  border-color: rgba(255,106,0,0.45);
  transform: translateY(-4px);
  box-shadow: 0 18px 44px rgba(0,0,0,0.4);
}

.related-card:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.related-card__img {
  aspect-ratio: 16 / 8;
  overflow: hidden;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}

.related-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.related-card:hover .related-card__img img {
  transform: scale(1.03);
}

.related-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-card__body .tag {
  align-self: flex-start;
  margin-bottom: 14px;
}

.related-card__body h3 {
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 750;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text);
}

.related-card__body p {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.related-card__more {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--primary-hover);
  font-weight: 700;
  font-size: 13px;
}

.related-card__more svg {
  width: 15px;
  height: 15px;
  transition: transform 0.25s ease;
}

.related-card:hover .related-card__more svg {
  transform: translateX(4px);
}

.related-stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.related-mini {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  transition: all 0.35s ease;
  min-width: 0;
}

.related-mini:hover {
  border-color: rgba(255,106,0,0.45);
  background: var(--surface-2);
  transform: translateY(-3px);
}

.related-mini .tag {
  align-self: flex-start;
}

.related-mini h4 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-mini__time {
  font-size: 12px;
  color: var(--text-3);
  margin-top: auto;
}

.empty-state {
  max-width: 640px;
  margin: 80px auto;
  background: var(--surface);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 70px 30px;
  text-align: center;
}

.empty-state__icon {
  width: 54px;
  height: 54px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: var(--primary-soft);
  color: var(--primary-hover);
  display: grid;
  place-items: center;
}

.empty-state__icon svg {
  width: 26px;
  height: 26px;
}

.empty-state h2 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 10px;
}

.empty-state p {
  color: var(--text-2);
  font-size: 14px;
  margin-bottom: 24px;
}

.footer {
  position: relative;
  z-index: 1;
  background: #0A0C0D;
  border-top: 1px solid var(--line-strong);
  padding-top: 58px;
  margin-top: 0;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.25fr 0.8fr 0.8fr 1.2fr;
  gap: 44px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

.footer .brand {
  margin-bottom: 16px;
}

.footer__desc {
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-3);
  max-width: 300px;
}

.footer h4 {
  font-size: 14px;
  font-weight: 750;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  color: var(--text);
}

.footer__links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 9px;
}

.footer__links a {
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.6;
  transition: color 0.2s ease;
}

.footer__links a:hover {
  color: var(--primary-hover);
}

.footer__safe {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--text-3);
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
}

.footer__safe svg {
  width: 19px;
  height: 19px;
  color: var(--warning);
  flex: 0 0 auto;
  margin-top: 2px;
}

.footer__bottom {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 30px;
  font-size: 12px;
  color: var(--text-3);
}

.footer__bottom span:last-child {
  margin-left: auto;
}

.footer .f-domain {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: #939aa1;
}

.footer .f-domain::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--success);
}

@media (max-width: 1199px) {
  .footer__top {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }

  .footer__top > div:first-child {
    grid-column: 1 / -1;
    max-width: 520px;
  }
}

@media (max-width: 991px) {
  .article-hero {
    padding-top: 44px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .related-stack {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .article-container {
    padding-bottom: 72px;
  }
}

@media (max-width: 767px) {
  .container {
    width: min(100% - 32px, 1280px);
  }

  .header,
  .header__bar {
    height: 64px;
  }

  .header__bar {
    gap: 10px;
  }

  .nav-tabs-wrap {
    top: 64px;
  }

  .nav-tabs__inner {
    height: auto;
    padding: 10px 0;
    margin-inline: -2px;
  }

  .brand__mark {
    width: 34px;
    height: 34px;
    font-size: 15px;
    border-radius: 10px;
  }

  .brand__text {
    font-size: 15px;
  }

  .brand__text small {
    font-size: 9px;
    letter-spacing: 0.08em;
  }

  .header__cta {
    min-height: 40px;
    padding: 0 14px;
    font-size: 13px;
  }

  .header__cta svg {
    width: 15px;
    height: 15px;
  }

  .article-hero {
    padding: 30px 0 36px;
    background-image: linear-gradient(180deg, rgba(12,14,16,0.95), rgba(12,14,16,0.9)), url('/assets/images/backpic/back-2.webp');
  }

  .breadcrumbs {
    font-size: 12px;
    margin-bottom: 14px;
  }

  .article-kicker {
    font-size: 12px;
    padding: 4px 11px;
    margin-bottom: 14px;
  }

  .article-title {
    font-size: clamp(25px, 7.2vw, 34px);
    line-height: 1.3;
    margin-bottom: 18px;
  }

  .article-meta {
    gap: 8px 16px;
    font-size: 11.5px;
  }

  .article-panel {
    border-radius: 16px;
    padding: 22px 18px;
  }

  .entry-content {
    font-size: 16px;
    line-height: 1.9;
  }

  .entry-content p {
    margin-bottom: 24px;
  }

  .entry-content h2 {
    font-size: 21px;
    margin-top: 38px;
  }

  .article-bottom-nav {
    justify-content: center;
  }

  .related-section {
    margin-top: 44px;
  }

  .related-card__img {
    aspect-ratio: 16 / 9;
  }

  .related-card__body {
    padding: 18px;
  }

  .related-card__body h3 {
    font-size: 18px;
  }

  .related-stack {
    grid-template-columns: 1fr;
  }

  .related-mini {
    padding: 16px 18px;
  }

  .footer {
    padding-top: 42px;
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer__top > div:first-child {
    grid-column: auto;
  }

  .footer__bottom {
    padding-bottom: 24px;
  }

  .footer__bottom span:last-child {
    margin-left: 0;
    width: 100%;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 15px;
  }

  .header__bar {
    gap: 8px;
  }

  .brand__text small {
    display: none;
  }

  .header__cta {
    padding: 0 12px;
    font-size: 12.5px;
  }

  .nav-tab {
    height: 35px;
    font-size: 12.5px;
    padding: 0 13px;
  }

  .entry-content code {
    word-break: break-all;
  }

  .empty-state {
    margin: 40px auto;
    padding: 40px 16px;
  }

  .empty-state h2 {
    font-size: 19px;
  }

  .footer__safe {
    padding: 11px;
  }
}

/* roulang page: category2 */
:root{
  --bg:#0C0E10;
  --surface:#15181B;
  --surface-2:#1D2126;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(255,255,255,0.18);
  --text:#F2EEE6;
  --text-2:#A6ADB5;
  --text-3:#727A83;
  --primary:#FF6A00;
  --primary-hover:#FF7D1E;
  --primary-active:#DE5900;
  --primary-glow:rgba(255,106,0,0.22);
  --primary-soft:rgba(255,106,0,0.12);
  --success:#2FE6A0;
  --warning:#FFC94D;
  --radius-lg:20px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-card:0 12px 36px rgba(0,0,0,0.45);
  --shadow-btn:0 8px 24px var(--primary-glow);
  --font-title:'Inter',"SF Pro Display","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Microsoft YaHei",sans-serif;
  --font-body:'Inter',"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-serif:"Source Han Serif SC","Noto Serif CJK SC","Songti SC","SimSun",serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;border:none;background:none;color:inherit;cursor:pointer}
svg{width:1em;height:1em}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.header{position:sticky;top:0;z-index:100;height:72px;background:rgba(12,14,16,0.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header__bar{height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--text)}
.brand__mark{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;color:var(--text);border:1px solid rgba(255,255,255,0.22);border-radius:10px;background:var(--surface-2);position:relative;overflow:hidden}
.brand__mark::after{content:'';position:absolute;bottom:-12px;left:-12px;width:28px;height:28px;background:var(--primary);opacity:0.85;border-radius:4px;transform:rotate(45deg)}
.brand__mark span{position:relative;z-index:2}
.brand__text{font-size:19px;font-weight:800;letter-spacing:0.01em;white-space:nowrap;line-height:1.2}
.brand__text small{display:block;font-size:11px;font-weight:500;color:var(--text-3);letter-spacing:0.08em}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:var(--font-body);font-weight:600;font-size:15px;line-height:1;border-radius:var(--radius-md);padding:0 20px;height:44px;transition:all .25s ease-out;text-decoration:none;white-space:nowrap}
.btn--primary{background:var(--primary);color:#0C0E10;box-shadow:var(--shadow-btn);padding:0 26px;font-weight:700}
.btn--primary:hover{background:var(--primary-hover);transform:translateY(-1px);color:#0C0E10}
.btn--primary:active{background:var(--primary-active);transform:translateY(0)}
.btn--primary:focus-visible,.btn--ghost:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn--ghost{background:transparent;color:var(--text);border:1px solid rgba(255,255,255,0.12);box-shadow:none;height:44px}
.btn--ghost:hover{background:var(--surface-2);border-color:var(--line-strong);color:var(--text)}
.btn--ghost:active{background:rgba(255,255,255,0.05)}
.btn svg{width:19px;height:19px;flex:none}
.btn--lg{height:58px;padding:0 34px;font-size:16px;border-radius:var(--radius-md);gap:11px}
.btn--lg svg{width:21px;height:21px}
.seg-nav{position:sticky;top:72px;z-index:99;background:rgba(12,14,16,0.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:10px 0}
.seg-nav__row{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;white-space:nowrap}
.seg-nav__row::-webkit-scrollbar{display:none}
.seg-chip{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;font-size:14px;font-weight:600;color:var(--text-2);border:1px solid var(--line);background:transparent;border-radius:999px;transition:all .2s ease-out;text-decoration:none}
.seg-chip:hover{color:var(--text);border-color:var(--line-strong);background:var(--surface)}
.seg-chip--active{color:#0C0E10;background:var(--primary);border-color:var(--primary);font-weight:700}
.seg-chip--active:hover{color:#0C0E10;background:var(--primary-hover)}
.category-hero{position:relative;padding:70px 0 56px;background:linear-gradient(180deg,rgba(255,106,0,0.06) 0%,transparent 80%)}
.category-hero .crumb{margin-bottom:22px;display:flex;align-items:center;gap:6px;font-size:13px;font-weight:500;color:var(--text-3)}
.category-hero .crumb a:hover{color:var(--text-2)}
.category-hero .crumb svg{width:14px;height:14px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;font-size:13px;font-weight:600;border:1px solid var(--line-strong);background:var(--surface-2);color:var(--text-2);border-radius:999px;margin-bottom:22px}
.badge__dot{width:7px;height:7px;border-radius:50%;background:var(--primary)}
.category-hero h1{font-family:var(--font-title);font-size:clamp(36px,4.5vw,56px);font-weight:800;line-height:1.15;letter-spacing:0.02em;margin-bottom:18px}
.category-hero h1 .hl{color:var(--primary)}
.category-hero__lead{max-width:660px;font-size:16px;color:var(--text-2);line-height:1.8;margin-bottom:26px}
.category-hero__btnrow{display:flex;flex-wrap:wrap;gap:12px}
.section-block{padding:74px 0}
.section-tag{display:flex;align-items:center;gap:10px;font-family:var(--font-body);font-size:12px;font-weight:600;letter-spacing:0.16em;color:var(--primary);text-transform:uppercase;margin-bottom:16px}
.section-tag::before{content:'';width:22px;height:1px;background:var(--primary)}
.section-title{font-family:var(--font-title);font-size:clamp(27px,3.5vw,40px);font-weight:760;line-height:1.2;letter-spacing:-0.01em;margin-bottom:14px}
.section-desc{font-size:15px;color:var(--text-2);max-width:620px;margin-bottom:44px;line-height:1.8}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.dl-flow{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.dl-flow__main{grid-column:span 7}
.dl-flow__sidebar{grid-column:span 5}
.num-step{display:flex;gap:20px;padding:28px 0;border-bottom:1px solid var(--line);position:relative}
.num-step:last-child{border-bottom:none}
.num-step__num{flex:none;width:40px;height:40px;border:1px solid var(--primary-soft);border-radius:50%;background:rgba(255,106,0,0.1);display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-title);font-size:15px;font-weight:800;color:var(--primary)}
.num-step__content{flex:1;min-width:0}
.num-step__content h3{font-family:var(--font-title);font-size:20px;font-weight:700;margin-bottom:8px;line-height:1.4}
.num-step__content p{color:var(--text-2);font-size:15px;line-height:1.75}
.num-step__content .chip-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.micro-chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;padding:5px 12px;border:1px solid var(--line);border-radius:999px;color:var(--text-3)}
.micro-chip svg{width:12px;height:12px;color:var(--success)}
.dl-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px 30px;margin-bottom:20px;transition:border-color .25s ease, box-shadow .25s ease}
.dl-card:hover{border-color:rgba(255,106,0,0.4)}
.dl-card__icon{width:48px;height:48px;border-radius:14px;background:var(--primary-soft);display:inline-flex;align-items:center;justify-content:center;color:var(--primary);font-size:24px;margin-bottom:18px}
.dl-card__icon svg{width:24px;height:24px}
.sys-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:20px}
.sys-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:10px 16px;display:flex;align-items:center;gap:10px;transition:border-color .2s}
.sys-item i{width:8px;height:8px;border-radius:50%}
.sys-item i.on{background:var(--success)}
.sys-item i.low{background:var(--warning)}
.sys-item span{font-size:13px;color:var(--text-2)}
.sys-item strong{font-size:13px;font-weight:600;margin-left:auto}
.download-box{background:var(--primary-soft);border:1px solid rgba(255,106,0,0.3);border-radius:var(--radius-md);padding:15px 18px;display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:16px}
.download-box .d-btn{background:var(--primary);color:#0C0E10;width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:17px;transition:all .2s}
.download-box .d-btn:hover{background:var(--primary-hover);transform:translateY(-2px)}
.download-box .d-btn svg{width:18px;height:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:border-color .25s, box-shadow .25s, transform .3s}
.card:hover{border-color:rgba(255,106,0,0.5);box-shadow:var(--shadow-card);transform:translateY(-3px)}
.card__media{aspect-ratio:16/10;overflow:hidden;background:#1A1D21}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{padding:22px 22px 20px}
.card__body h3{font-family:var(--font-title);font-size:17px;line-height:1.5;margin:4px 0 0 0;font-weight:650}
.card__body h3 a:hover{color:var(--primary)}
.card__meta{font-size:12px;color:var(--text-3);display:flex;justify-content:space-between;margin-top:18px}
.card__body p{font-size:14px;color:var(--text-2);margin-top:10px;line-height:1.65}
.faq{padding:74px 0;background:var(--surface-2)}
.faq__grid{max-width:900px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);margin-bottom:16px;overflow:hidden;transition:border-color .25s}
.faq-item.active{border-color:rgba(255,106,0,0.4)}
.faq-item__btn{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:22px 26px;font-size:16px;font-weight:600;text-align:left;width:100%;background:none}
.faq-item__btn .faq-icon{width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);display:inline-flex;align-items:center;justify-content:center;flex:none;transition:all .25s}
.faq-item__btn .faq-icon svg{width:14px;height:14px;color:var(--text-2)}
.faq-item.active .faq-icon{background:var(--primary);border-color:var(--primary)}
.faq-item.active .faq-icon svg{color:#0C0E10;transform:rotate(45deg)}
.faq-item__ans{padding:0 26px 22px;font-size:15px;color:var(--text-2);line-height:1.85}
.steps-mini{list-style:none;counter-reset:stepnum;margin-top:16px}
.steps-mini li{counter-increment:stepnum;display:flex;gap:16px;margin-bottom:22px}
.steps-mini li::before{content:counter(stepnum, decimal-leading-zero);font-family:var(--font-title);font-weight:800;font-size:13px;line-height:26px;text-align:center;flex:none;color:var(--primary)}
.steps-mini li strong{display:block;font-size:15px;font-weight:650}
.steps-mini li p{font-size:14px;color:var(--text-2);margin-top:3px}
.cta-light{background:var(--surface-2);border:1px solid var(--line-strong);color:var(--text);border-radius:20px;padding:54px 44px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:24px}
.cta-light h2{font-family:var(--font-title);font-size:clamp(24px,2.5vw,32px);font-weight:800;color:var(--text);margin-bottom:8px;line-height:1.3}
.cta-light p{color:var(--text-2);font-size:15px;max-width:440px}
.guide-cards{margin-top:44px}
.guide-cards h3{font-family:var(--font-title);font-size:22px;font-weight:700;margin-bottom:24px}
.cards-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.img-cell{width:42px;height:42px;border-radius:10px;position:relative;overflow:hidden;flex:none}
.img-cell img{width:100%;height:100%;object-fit:cover}
.footer{background:var(--surface);border-top:1px solid var(--line);padding:76px 0 28px;font-family:var(--font-body)}
.footer__top{display:grid;grid-template-columns:1fr 1.2fr 0.8fr 1.4fr;gap:44px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.footer .brand__text{white-space:normal}
.footer__desc{font-size:13px;color:var(--text-3);line-height:1.75;max-width:290px}
.footer h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer__links{display:flex;flex-direction:column;gap:8px}
.footer__links a{font-size:14px;color:var(--text-2);transition:color .2s}
.footer__links a:hover{color:var(--primary)}
.footer__safe{display:flex;gap:12px;align-items:flex-start;background:rgba(255,255,255,0.04);border-radius:12px;padding:14px;
 border:1px solid rgba(255,255,255,0.08)}
.footer__safe svg{width:18px;height:18px;color:var(--primary);flex:none;margin-top:2px}
.footer__safe span{font-size:12px;color:var(--text-3);line-height:1.7}
.footer__bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-start;align-items:center;padding-top:14px;font-size:12px;color:var(--text-3)}
.footer__bottom span{margin-right:12px}
.footer__bottom span.f-domain{color:var(--primary);font-weight:600}
.footer__bottom span:last-child{margin-left:auto}

@media(max-width:992px){
  .footer__top{grid-template-columns:1fr 1fr}
  .cards-row{grid-template-columns:repeat(2,1fr)}
  .dl-flow__main,.dl-flow__sidebar{grid-column:span 12}
  .system-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .header__cta span.hide-sm{display:none}
  .btn--primary.header__cta{padding:0 17px}
  .brand__text{font-size:17px}
}
@media(max-width:576px){
  .header__cta .btn-label{display:none}
  .header__cta{width:42px;padding:0;justify-content:center}
  .category-hero{padding:48px 0 42px}
  .cards-row{grid-template-columns:1fr 1fr;gap:15px}
  .footer__top{grid-template-columns:1fr}
  .footer__bottom span{margin-left:0}
  .footer__bottom span:last-child{margin-left:0}
  .footer{border-top:1px solid var(--line)}
  .container{padding:0 16px}
  html{overflow-x:hidden}
}

@media(min-width:299px) and (max-width:399px){
  .card__body{padding:12px}
  .guide-card p{display:none}
  .section-block{padding:20px 0}
}

@media(min-width:1025px){
  .cards-row{grid-template-columns:repeat(4,1fr)}
}

/* roulang page: category1 */
:root {
  --bg: #0C0E10;
  --surface: #15181B;
  --surface-2: #1D2126;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.18);
  --text: #F2EEE6;
  --text-2: #A6ADB5;
  --text-3: #727A83;
  --primary: #FF6A00;
  --primary-hover: #FF7D1E;
  --primary-active: #DE5900;
  --primary-glow: rgba(255,106,0,0.22);
  --primary-soft: rgba(255,106,0,0.12);
  --success: #2FE6A0;
  --warning: #FFC94D;
  --radius-lg: 20px;
  --radius: 12px;
  --radius-sm: 10px;
  --radius-chip: 999px;
  --font-title: Inter, "SF Pro Display", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --font-body: Inter, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  min-width: 320px;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, p, ul, ol, figure, blockquote {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
  border: 0;
}
svg {
  display: inline-block;
  vertical-align: middle;
}
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section {
  padding: 92px 0 88px;
  border-bottom: 1px solid var(--line);
}
.section-head {
  max-width: 860px;
  margin-bottom: 46px;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--primary);
  border: 1px solid rgba(255,106,0,0.32);
  background: rgba(255,106,0,0.06);
  padding: 5px 12px 5px 14px;
  border-radius: var(--radius-chip);
  margin-bottom: 16px;
}
.section-label::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(255,106,0,0.12);
}
.section-head h2,
.flow h2 {
  font-family: var(--font-title);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 760;
  line-height: 1.22;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 14px;
}
.section-head p,
.flow p {
  color: var(--text-2);
  font-size: 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  border: 1px solid transparent;
  font-family: var(--font-body);
  cursor: pointer;
  transition: background .25s ease, transform .25s ease, border-color .25s ease, box-shadow .25s ease, color .25s ease;
  box-shadow: none;
}
.btn svg {
  width: 20px;
  height: 20px;
  transition: transform .25s ease;
}
.btn--primary {
  background: var(--primary);
  color: #0C0E10;
  box-shadow: 0 8px 24px var(--primary-glow);
}
.btn--primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255,106,0,0.32);
}
.btn--primary:hover svg {
  transform: translateY(2px);
}
.btn--primary:active {
  background: var(--primary-active);
  transform: translateY(0);
  box-shadow: 0 6px 18px rgba(255,106,0,0.22);
}
.btn--ghost {
  background: rgba(255,255,255,0.03);
  border-color: var(--line-strong);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: rgba(255,106,0,0.6);
  color: #fff;
  background: rgba(255,255,255,0.05);
}
.btn--ghost:active {
  transform: translateY(1px);
}
a:focus-visible,
button:focus-visible,
summary:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(12,14,16,0.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .header {
    background: #0C0E10;
  }
}
.header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.brand__mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: var(--primary);
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 800;
  color: #0c0e10;
  box-shadow: 0 6px 20px rgba(255,106,0,0.26);
}
.brand__mark::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 11px;
  height: 11px;
  border-radius: 0 0 10px 0;
  background: rgba(12,14,16,0.62);
}
.brand__mark span {
  position: relative;
  z-index: 1;
}
.brand__text {
  font-family: var(--font-title);
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
  font-weight: 750;
  font-size: 18px;
  color: var(--text);
  white-space: nowrap;
}
.brand__text small {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.12em;
  margin-top: 2px;
}
.header__cta {
  min-height: 42px;
  padding: 0 18px;
  font-size: 14px;
  border-radius: 10px;
}
.seg-nav {
  border-top: 1px solid rgba(255,255,255,0.06);
  background: rgba(18,20,23,0.8);
}
.seg-nav__track {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding-top: 10px;
  padding-bottom: 10px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  align-items: center;
  justify-content: flex-start;
}
.seg-nav__track::-webkit-scrollbar {
  display: none;
}
.seg-nav__item {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 34px;
  padding: 0 15px;
  border-radius: var(--radius-chip);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 550;
  color: var(--text-2);
  background: transparent;
  white-space: nowrap;
  transition: color .25s ease, background .25s ease, border-color .25s ease, transform .25s ease;
}
.seg-nav__item:hover {
  color: #fff;
  border-color: var(--line-strong);
  background: rgba(255,255,255,0.04);
}
.seg-nav__item:active {
  transform: translateY(1px);
}
.seg-nav__item.is-active {
  background: #fff;
  border-color: #fff;
  color: #0C0E10;
  font-weight: 700;
}
.cat-hero {
  position: relative;
  padding: 78px 0 72px;
  background-color: #0B0D0F;
  background-image: url("/assets/images/backpic/back-2.webp");
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.cat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 18% 35%, rgba(255,106,0,0.09), transparent 32%),
              linear-gradient(180deg, rgba(12,14,16,0.82) 0%, rgba(12,14,16,0.94) 100%);
  z-index: 1;
}
.cat-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 960px;
}
.crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 20px;
}
.crumb a {
  color: var(--text-2);
  transition: color .22s ease;
}
.crumb a:hover {
  color: var(--primary);
}
.crumb__sep {
  opacity: 0.5;
}
.crumb span[aria-current="page"] {
  color: var(--primary);
  font-weight: 600;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px 6px 10px;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-chip);
  background: rgba(255,255,255,0.03);
  color: var(--text-2);
  font-size: 13px;
  letter-spacing: 0.04em;
  margin-bottom: 22px;
}
.hero-badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 5px rgba(255,106,0,0.16);
}
.cat-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: #fff;
  margin-bottom: 22px;
}
.cat-hero h1 em {
  font-style: normal;
  color: var(--primary);
  text-shadow: 0 0 34px rgba(255,106,0,0.3);
}
.cat-hero .lead {
  font-size: 17px;
  color: #C8CDD4;
  max-width: 720px;
  margin-bottom: 28px;
  line-height: 1.85;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-points span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-2);
  padding: 5px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-chip);
  background: rgba(255,255,255,0.02);
}
.hero-points span::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.feature-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  min-height: 264px;
  transition: border-color .3s ease, transform .32s ease, box-shadow .32s ease;
}
.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255,106,0,0.48);
  box-shadow: 0 14px 36px rgba(0,0,0,0.34);
}
.feature-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  background: var(--primary-soft);
  color: var(--primary);
  margin-bottom: 16px;
}
.feature-card__icon svg {
  width: 24px;
  height: 24px;
}
.feature-card h3 {
  font-family: var(--font-title);
  font-size: 19px;
  font-weight: 680;
  letter-spacing: 0.01em;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 16px;
  flex: 1 1 auto;
}
.feature-card__meta {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
  color: var(--success);
  margin-bottom: 9px;
}
.feature-card__meta::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 4px rgba(47,230,160,0.13);
}
.feature-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 650;
  color: var(--text-2);
  transition: color .22s ease;
}
.feature-card__link span {
  transition: transform .25s ease;
}
.feature-card__link:hover {
  color: var(--primary);
}
.feature-card__link:hover span {
  transform: translateX(4px);
}
.flow {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 52px;
  align-items: center;
}
.media-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 18px 44px rgba(0,0,0,0.3);
}
.media-panel img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--surface-2);
}
.media-panel__note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 18px;
  font-size: 13px;
  color: var(--text-2);
  background: #101316;
  border-top: 1px solid rgba(255,255,255,0.06);
  line-height: 1.6;
}
.media-panel__note svg {
  width: 18px;
  height: 18px;
  color: var(--primary);
  flex: 0 0 auto;
  margin-top: 2px;
}
.step-list {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}
.step {
  display: flex;
  gap: 18px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}
.step:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 14px;
  flex: 0 0 auto;
  margin-top: 3px;
}
.step h3 {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 5px;
}
.step p {
  color: var(--text-2);
  font-size: 15px;
}
.flow-cta {
  margin-top: 28px;
}
.quick-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.quick-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 17px 18px;
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
}
.quick-card:hover {
  transform: translateX(5px);
  border-color: rgba(255,106,0,0.45);
  background: var(--surface-2);
}
.quick-card__num {
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 800;
  color: var(--primary);
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  background: rgba(255,106,0,0.1);
  border: 1px solid rgba(255,106,0,0.22);
  flex: 0 0 auto;
}
.quick-card__body {
  flex: 1 1 auto;
  min-width: 0;
}
.quick-card__body strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 3px;
}
.quick-card__body small {
  display: block;
  color: var(--text-3);
  font-size: 13px;
  line-height: 1.55;
}
.quick-card__arrow {
  color: var(--text-3);
  font-size: 18px;
  flex: 0 0 auto;
  transition: color .22s ease, transform .22s ease;
}
.quick-card:hover .quick-card__arrow {
  color: var(--primary);
  transform: translateX(4px);
}
.rec-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}
.rec-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color .3s ease, transform .32s ease, box-shadow .32s ease;
}
.rec-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255,106,0,0.48);
  box-shadow: 0 16px 38px rgba(0,0,0,0.36);
}
.rec-card__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--surface-2);
}
.rec-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.rec-card:hover .rec-card__media img {
  transform: scale(1.03);
}
.rec-card__body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: 18px 18px 16px;
}
.rec-card__tag {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary);
  padding: 3px 9px;
  border: 1px solid rgba(255,106,0,0.25);
  background: rgba(255,106,0,0.08);
  border-radius: var(--radius-chip);
  margin-bottom: 9px;
}
.rec-card h3 {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 7px;
  color: #fff;
}
.rec-card p {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.7;
  flex: 1 1 auto;
}
.rec-card__go {
  margin-top: 13px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
}
.rec-card__go span {
  transition: transform .25s ease;
}
.rec-card:hover .rec-card__go span {
  transform: translateX(5px);
}
.faq-wrap {
  max-width: 880px;
}
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .25s ease;
}
.faq-item[open] {
  border-color: rgba(255,106,0,0.35);
}
.faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  list-style: none;
  padding: 17px 20px;
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 650;
  color: #fff;
  transition: color .22s ease, background .22s ease;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 27px;
  height: 27px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  color: var(--text-2);
  font-size: 18px;
  line-height: 1;
  font-weight: 400;
  flex: 0 0 auto;
  transition: color .22s ease, border-color .22s ease, transform .22s ease;
}
.faq-item[open] summary {
  background: rgba(255,255,255,0.02);
}
.faq-item[open] summary::after {
  content: "−";
  color: var(--primary);
  border-color: rgba(255,106,0,0.45);
  transform: rotate(180deg);
}
.faq-item summary:hover {
  color: var(--primary);
}
.faq-item__body {
  padding: 2px 20px 20px;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.85;
  border-top: 1px solid rgba(255,255,255,0.05);
  margin: 0 0;
}
.cta-line {
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
  background: #0E1113;
}
.cta-line__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(0deg, rgba(255,255,255,0.02), rgba(255,255,255,0.02)), var(--surface);
  border-radius: 22px;
  padding: 28px 30px;
}
.cta-line h3 {
  font-family: var(--font-title);
  font-size: clamp(20px, 3vw, 27px);
  font-weight: 700;
  margin-bottom: 6px;
  color: #fff;
}
.cta-line p {
  color: var(--text-2);
  font-size: 14px;
  max-width: 720px;
}
.cta-line .btn {
  min-width: 170px;
}
.footer {
  background: #090B0D;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 62px 0 26px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 38px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer__desc {
  margin-top: 16px;
  max-width: 360px;
  color: var(--text-3);
  font-size: 14px;
  line-height: 1.85;
}
.footer h4 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  margin-bottom: 15px;
  font-family: var(--font-title);
}
.footer__links {
  display: grid;
  gap: 8px;
}
.footer__links a {
  display: inline-flex;
  font-size: 14px;
  color: var(--text-2);
  transition: color .22s ease;
}
.footer__links a:hover {
  color: var(--primary);
}
.footer__safe {
  display: flex;
  gap: 10px;
  font-size: 12px;
  color: var(--text-3);
  line-height: 1.75;
  background: rgba(255,255,255,0.025);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 13px 14px;
}
.footer__safe svg {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  color: var(--primary);
}
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding-top: 24px;
  align-items: center;
  color: var(--text-3);
  font-size: 12px;
}
.footer__bottom .f-domain {
  color: var(--text-2);
}
@media (max-width: 1150px) {
  .rec-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (max-width: 991.98px) {
  .section {
    padding: 72px 0 68px;
  }
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .flow {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .footer__top {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 767.98px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .brand__text small {
    display: none;
  }
  .header__cta {
    padding: 0 14px;
    font-size: 13px;
    min-height: 38px;
  }
  .brand {
    gap: 8px;
  }
  .brand__mark {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    font-size: 16px;
  }
  .brand__text {
    font-size: 16px;
  }
  .hero-actions .btn {
    width: auto;
  }
  .rec-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .cta-line__inner {
    align-items: flex-start;
  }
}
@media (max-width: 575.98px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .section {
    padding: 58px 0 56px;
  }
  .feature-grid,
  .quick-grid,
  .rec-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .cat-hero {
    padding: 50px 0 48px;
  }
  .cat-hero h1 {
    font-size: clamp(32px, 9.5vw, 46px);
  }
  .cat-hero .lead {
    font-size: 15px;
  }
  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }
  .hero-actions .btn {
    width: 92%;
    max-width: 340px;
    justify-self: start;
    min-height: 52px;
  }
  .hero-points {
    gap: 8px;
  }
  .hero-points span {
    font-size: 12px;
    padding: 4px 11px;
  }
  .cta-line__inner {
    flex-direction: column;
    align-items: stretch;
    padding: 24px 20px;
  }
  .cta-line .btn {
    width: 100%;
    justify-content: center;
  }
  .footer__top {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer {
    padding-top: 46px;
  }
  .footer__bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
}

/* roulang page: category4 */
:root{
  --bg:#0C0E10;
  --surface:#15181B;
  --surface-2:#1D2126;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(255,255,255,0.18);
  --text:#F2EEE6;
  --text-2:#A6ADB5;
  --text-3:#727A83;
  --primary:#FF6A00;
  --primary-hover:#FF7D1E;
  --primary-active:#DE5900;
  --primary-glow:rgba(255,106,0,0.22);
  --primary-soft:rgba(255,106,0,0.12);
  --success:#2FE6A0;
  --warning:#FFC94D;
  --radius-lg:20px;
  --radius-md:12px;
  --radius-sm:10px;
  --font-display:Inter, "SF Pro Display", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --font-body:Inter, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --shadow-card:0 12px 36px rgba(0,0,0,0.45);
  --sticky-top:142px;
}
*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}
html{
  scroll-behavior:smooth;
}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body, .site-header, .page-hero, .footer{
  background-color:var(--bg);
}
a{
  color:inherit;
  text-decoration:none;
}
img{
  display:block;
  max-width:100%;
}
ul, ol{
  list-style:none;
}
svg{
  flex-shrink:0;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  line-height:1.25;
  color:var(--text);
}
button, input, select, textarea{
  font:inherit;
}
:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
}
.container{
  width:100%;
  max-width:1280px;
  margin-inline:auto;
  padding-inline:24px;
}
.section{
  padding-block:96px;
  position:relative;
}
.section--dark{
  background:var(--bg);
}
.section--soft{
  background:rgba(255,255,255,0.018);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 24px;
  border:1px solid transparent;
  border-radius:var(--radius-md);
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  color:var(--text);
  background:transparent;
  cursor:pointer;
  transition:background .25s ease-out, border-color .25s ease-out, box-shadow .25s ease-out, transform .25s ease-out, color .25s ease-out;
}
.btn svg{
  width:19px;
  height:19px;
  transition:transform .28s ease-out;
}
.btn:hover svg{
  transform:translateY(3px);
}
.btn--primary{
  background:var(--primary);
  color:#1B0D00;
}
.btn--primary:hover{
  background:var(--primary-hover);
  color:#1B0D00;
  box-shadow:0 12px 32px var(--primary-glow);
  transform:translateY(-2px);
}
.btn--primary:active{
  background:var(--primary-active);
  transform:translateY(0);
  box-shadow:0 6px 20px var(--primary-glow);
}
.btn--ghost{
  border-color:var(--line-strong);
  color:var(--text);
  background:rgba(255,255,255,0.02);
}
.btn--ghost:hover{
  background:rgba(255,255,255,0.06);
  border-color:rgba(255,255,255,0.3);
  transform:translateY(-2px);
}
.btn--ghost:active{
  background:rgba(255,255,255,0.02);
  transform:translateY(0);
}
.btn--full{
  width:100%;
}
.btn--lg{
  padding:16px 30px;
  font-size:16px;
  border-radius:14px;
}
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(12,14,16,0.78);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.header__bar{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.brand__mark{
  flex:none;
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  position:relative;
  border:1px solid rgba(255,106,0,0.55);
  border-radius:12px;
  background:linear-gradient(160deg, rgba(255,106,0,0.22), rgba(255,255,255,0.02));
  color:#fff;
  font-size:19px;
  font-weight:800;
  overflow:hidden;
}
.brand__mark span{
  position:relative;
  z-index:1;
}
.brand__mark::after{
  content:"";
  position:absolute;
  right:-1px;
  bottom:-1px;
  width:13px;
  height:13px;
  background:var(--primary);
  clip-path:polygon(0 0, 100% 100%, 0 100%);
}
.brand__text{
  display:block;
  font-family:var(--font-display);
  font-size:20px;
  font-weight:800;
  letter-spacing:.02em;
  line-height:1.2;
  color:var(--text);
  white-space:nowrap;
}
.brand__text small{
  display:block;
  margin-top:2px;
  font-size:10px;
  font-weight:600;
  letter-spacing:.28em;
  color:var(--text-3);
  text-transform:uppercase;
}
.subnav{
  padding-bottom:14px;
  background:transparent;
}
.subnav__tabs{
  display:flex;
  gap:10px;
  align-items:center;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
  padding-bottom:2px;
}
.subnav__tabs::-webkit-scrollbar{
  display:none;
}
.tab{
  position:relative;
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:9px 20px;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--text-2);
  font-size:14px;
  font-weight:600;
  font-family:var(--font-display);
  white-space:nowrap;
  cursor:pointer;
  transition:all .25s ease-out;
}
.tab:hover{
  color:var(--text);
  border-color:var(--line-strong);
  background:rgba(255,255,255,0.03);
}
.tab:active{
  transform:scale(.98);
}
.tab.is-active{
  background:var(--text);
  border-color:var(--text);
  color:#0B0D0E;
}
.page-hero{
  position:relative;
  padding:76px 0 66px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(circle at 12% 20%, rgba(255,106,0,.16), transparent 32%),
    radial-gradient(circle at 85% 55%, rgba(255,255,255,.05), transparent 30%),
    linear-gradient(rgba(12,14,16,.88), rgba(12,14,16,.96)),
    url("/assets/images/backpic/back-3.webp") center / cover;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(12,14,16,.18), rgba(12,14,16,.55));
}
.page-hero__inner{
  position:relative;
  z-index:2;
}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:24px;
  font-size:13px;
  color:var(--text-3);
}
.crumb a{
  color:var(--text-3);
  transition:color .2s ease;
}
.crumb a:hover{
  color:var(--primary);
}
.crumb .crumb__sep{
  opacity:.5;
}
.crumb .crumb__current{
  color:var(--text-2);
}
.eyebrow{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:26px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--text-3);
}
.eyebrow__num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;
  height:30px;
  background:var(--primary-soft);
  color:var(--primary);
  border-radius:50%;
  font-weight:800;
  letter-spacing:.04em;
}
.eyebrow__line{
  width:60px;
  height:1px;
  background:var(--line-strong);
}
.page-hero h1{
  max-width:880px;
  font-size:clamp(40px, 6.6vw, 70px);
  font-weight:800;
  line-height:1.15;
  letter-spacing:.01em;
  margin-bottom:22px;
}
.hl{
  color:var(--primary);
}
.page-hero__lead{
  max-width:650px;
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
  margin-bottom:34px;
}
.quick-chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(21,24,27,.6);
  color:var(--text-2);
  font-size:13px;
  font-weight:600;
  transition:all .22s ease;
}
.chip::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--text-3);
  transition:background .2s ease;
}
.chip:hover{
  color:var(--text);
  border-color:rgba(255,106,0,.45);
  background:rgba(255,106,0,.06);
  transform:translateY(-1px);
}
.chip:hover::before{
  background:var(--primary);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:30px;
  margin-bottom:52px;
}
.section-kicker{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:12px;
}
.section-kicker i{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 5px var(--primary-soft);
}
.section-title{
  font-size:clamp(30px, 4vw, 46px);
  font-weight:800;
  letter-spacing:.01em;
  line-height:1.2;
  margin-bottom:12px;
}
.section-desc{
  max-width:660px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.8;
  margin-top:10px;
}
.faq-layout{
  display:grid;
  grid-template-columns:minmax(280px, .82fr) minmax(0, 1.6fr);
  gap:40px;
  align-items:start;
}
.faq-aside{
  position:sticky;
  top:calc(var(--sticky-top) + 18px);
}
.aside-card{
  padding:28px 26px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
}
.aside-card__icon{
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border-radius:12px;
  background:var(--primary-soft);
  color:var(--primary);
  margin-bottom:18px;
}
.aside-card__icon svg{
  width:21px;
  height:21px;
}
.aside-card h3{
  font-size:21px;
  font-weight:750;
  margin-bottom:10px;
}
.aside-card p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.8;
  margin-bottom:20px;
}
.aside-links{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-bottom:24px;
}
.aside-link{
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:rgba(255,255,255,.02);
  color:var(--text-2);
  font-size:14px;
  font-weight:600;
  transition:all .2s ease;
}
.aside-link::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--text-3);
  transition:background .2s ease;
}
.aside-link:hover{
  background:var(--surface-2);
  border-color:rgba(255,106,0,.4);
  color:var(--text);
  transform:translateX(3px);
}
.aside-link:hover::before{
  background:var(--primary);
}
.faq-list{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.faq-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:border-color .25s ease, box-shadow .25s ease;
}
.faq-card:hover{
  border-color:rgba(255,255,255,.15);
  box-shadow:0 8px 28px rgba(0,0,0,.25);
}
.faq-card[open]{
  border-color:rgba(255,106,0,.45);
}
.faq-card summary{
  display:flex;
  align-items:center;
  gap:16px;
  padding:22px 22px;
  cursor:pointer;
  list-style:none;
  font-family:var(--font-display);
  font-size:16px;
  font-weight:650;
  line-height:1.5;
  color:var(--text);
  user-select:none;
}
.faq-card summary::-webkit-details-marker{
  display:none;
}
.qa-num{
  flex:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:11px;
  background:var(--primary-soft);
  color:var(--primary);
  font-family:var(--font-display);
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
}
.faq-icon{
  flex:none;
  position:relative;
  width:26px;
  height:26px;
  margin-left:4px;
  border-radius:8px;
  border:1px solid var(--line-strong);
  transition:all .3s ease-out;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  width:10px;
  height:2px;
  background:var(--text-2);
  transform:translate(-50%,-50%);
  transition:background .25s, transform .3s;
}
.faq-icon::after{
  transform:translate(-50%,-50%) rotate(90deg);
}
.faq-card:hover .faq-icon{
  border-color:rgba(255,106,0,.5);
}
.faq-card[open] .faq-icon{
  border-color:var(--primary);
  background:var(--primary-soft);
}
.faq-card[open] .faq-icon::after{
  transform:translate(-50%,-50%) rotate(0deg);
}
.faq-card[open] .faq-icon::before{
  background:var(--primary);
}
.faq-card[open] .faq-icon::after{
  background:var(--primary);
}
.faq-body{
  padding:0 26px 26px 76px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.faq-body p + p{
  margin-top:10px;
}
.solution-tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-top:8px;
  padding:6px 12px;
  border-radius:8px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:12px;
  font-weight:700;
}
.flow-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0, 1fr));
  gap:20px;
}
.flow-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:30px 28px 26px;
  position:relative;
  overflow:hidden;
  transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.flow-card:hover{
  border-color:rgba(255,106,0,.4);
  transform:translateY(-4px);
  box-shadow:0 16px 40px rgba(0,0,0,.35);
}
.flow-card--warn{
  background:linear-gradient(180deg, rgba(255,201,77,.06), rgba(21,24,27,.96) 26%);
}
.flow-card--secure{
  background:linear-gradient(180deg, rgba(47,230,160,.05), rgba(21,24,27,.96) 26%);
}
.flow-card__tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--text-3);
  text-transform:uppercase;
  margin-bottom:18px;
}
.flow-card__tag::after{
  content:"";
  width:32px;
  height:1px;
  background:var(--line-strong);
}
.flow-card h3{
  font-size:21px;
  font-weight:750;
  margin-bottom:12px;
}
.flow-card > p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.75;
  margin-bottom:22px;
}
.steps{
  display:flex;
  flex-direction:column;
  gap:13px;
}
.steps li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
}
.step-index{
  flex:none;
  width:26px;
  height:26px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:8px;
  background:rgba(255,255,255,.02);
  color:var(--text-3);
  font-size:12px;
  font-weight:800;
  line-height:1;
  margin-top:2px;
}
.support-layout{
  display:grid;
  grid-template-columns:minmax(0, .9fr) minmax(0, 1.4fr);
  gap:40px;
  align-items:center;
}
.support-note h2{
  font-size:clamp(28px, 3.4vw, 42px);
  line-height:1.2;
  margin-bottom:18px;
}
.support-note p{
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
  margin-bottom:26px;
}
.support-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.support-channels{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.channel-row{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:20px 22px;
  border:1px solid var(--line);
  border-radius:16px;
  background:var(--surface);
  transition:all .25s ease;
}
.channel-row:hover{
  border-color:rgba(255,106,0,.35);
  background:var(--surface-2);
  transform:translateY(-2px);
}
.channel-icon{
  flex:none;
  width:42px;
  height:42px;
  display:grid;
  place-items:center;
  background:var(--primary-soft);
  border-radius:13px;
  color:var(--primary);
}
.channel-icon svg{
  width:20px;
  height:20px;
}
.channel-row:nth-child(2) .channel-icon{
  color:var(--success);
  background:rgba(47,230,160,.1);
}
.channel-row:nth-child(3) .channel-icon{
  color:var(--warning);
  background:rgba(255,201,77,.1);
}
.channel-text h4{
  font-size:16px;
  font-weight:700;
  margin-bottom:5px;
}
.channel-text p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.75;
}
.rec-grid{
  display:grid;
  grid-template-columns:repeat(4, minmax(0, 1fr));
  gap:18px;
}
.rec-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:all .3s ease-out;
}
.rec-card:hover{
  border-color:rgba(255,106,0,.5);
  transform:translateY(-6px);
  box-shadow:0 16px 42px rgba(0,0,0,.35);
}
.media-frame{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#1A1E22;
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease-out;
}
.rec-card:hover .media-frame img{
  transform:scale(1.03);
}
.media-frame__fallback{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:600;
  color:var(--text-3);
  background:#1A1E22;
}
.media-frame__fallback[hidden]{
  display:none;
}
.rec-body{
  padding:22px 20px 20px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.rec-body h3{
  font-size:19px;
  font-weight:750;
  line-height:1.4;
  margin-bottom:8px;
}
.rec-body p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.75;
  margin-bottom:16px;
  flex:1;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-weight:700;
  color:var(--primary);
  font-size:14px;
}
.text-link svg{
  width:16px;
  height:16px;
  transition:transform .25s ease;
}
.text-link:hover svg{
  transform:translateX(5px);
}
.cta-mini{
  padding-block:40px 96px;
}
.cta-mini__box{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line-strong);
  border-radius:24px;
  background:
    radial-gradient(circle at 12% 15%, rgba(255,106,0,.14), transparent 32%),
    linear-gradient(rgba(21,24,27,.94), rgba(21,24,27,.98)),
    url("/assets/images/backpic/back-1.png") center / cover;
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-mini__box h2{
  font-size:clamp(26px, 3vw, 38px);
  font-weight:800;
  line-height:1.3;
  max-width:760px;
}
.cta-mini__box p{
  color:var(--text-2);
  margin-top:12px;
  max-width:640px;
  font-size:15px;
}
.cta-mini__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.footer{
  background:#0A0C0E;
  border-top:1px solid var(--line);
  padding:64px 0 36px;
}
.footer__top{
  display:grid;
  grid-template-columns:minmax(210px, 1.3fr) minmax(150px, .7fr) minmax(150px, .7fr) minmax(240px, 1.1fr);
  gap:40px;
  margin-bottom:46px;
}
.footer .brand{
  margin-bottom:16px;
}
.footer__desc{
  font-size:13px;
  color:var(--text-3);
  line-height:1.85;
}
.footer h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--text-2);
  margin-bottom:18px;
}
.footer__links{
  display:flex;
  flex-direction:column;
  gap:9px;
  align-items:flex-start;
}
.footer__links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--text-3);
  font-size:13px;
  line-height:1.5;
  transition:color .2s ease, padding-left .2s ease;
}
.footer__links a::before{
  content:"";
  width:4px;
  height:4px;
  background:var(--primary);
  border-radius:50%;
  opacity:.4;
  transition:opacity .2s;
}
.footer__links a:hover{
  color:var(--text);
  padding-left:3px;
}
.footer__links a:hover::before{
  opacity:1;
}
.footer__safe{
  display:flex;
  gap:12px;
  font-size:12px;
  line-height:1.8;
  color:var(--text-3);
  padding:15px 15px;
  border:1px solid var(--line);
  border-radius:14px;
}
.footer__safe svg{
  width:20px;
  height:20px;
  color:var(--success);
  flex:none;
  margin-top:2px;
}
.footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px 20px;
  padding-top:28px;
  border-top:1px solid var(--line);
  color:var(--text-3);
  font-size:12px;
}
.footer__bottom .f-domain{
  color:var(--text-3);
  font-weight:500;
}
.reveal{
  transition:opacity .5s ease-out, transform .5s ease-out;
}
.js-ready .reveal:not(.in-view){
  opacity:0;
  transform:translateY(20px);
}
@media (max-width:991px){
  .section{
    padding-block:72px;
  }
  .faq-layout{
    grid-template-columns:1fr;
    gap:28px;
  }
  .faq-aside{
    position:static;
    top:auto;
  }
  .support-layout{
    grid-template-columns:1fr;
    gap:30px;
  }
  .flow-grid{
    grid-template-columns:repeat(2, minmax(0, 1fr));
  }
  .flow-card:last-child{
    grid-column:1 / -1;
  }
  .rec-grid{
    grid-template-columns:repeat(2, minmax(0, 1fr));
  }
  .footer__top{
    grid-template-columns:repeat(2, 1fr);
    gap:40px 28px;
  }
}
@media (max-width:767px){
  .container{
    padding-inline:20px;
  }
  .brand__text{
    font-size:18px;
  }
  .brand__text small{
    font-size:9px;
  }
  .header__cta{
    padding:12px 18px;
  }
  .header__bar{
    height:68px;
  }
  .subnav{
    padding-bottom:12px;
  }
  .page-hero{
    padding:58px 0 52px;
  }
  .cta-mini__box{
    padding:34px 26px;
  }
}
@media (max-width:575px){
  .container{
    padding-inline:16px;
  }
  .page-hero h1{
    font-size:36px;
  }
  .brand__text{
    max-width:210px;
    overflow:hidden;
    text-overflow:ellipsis;
  }
  .brand__text small{
    display:none;
  }
  .header__cta .btn-label-text{
    display:none;
  }
  .header__cta{
    width:44px;
    height:44px;
    padding:0;
  }
  .header__cta svg{
    margin:0;
  }
  .section{
    padding-block:64px;
  }
  .section-head{
    flex-direction:column;
    align-items:flex-start;
    gap:16px;
    margin-bottom:36px;
  }
  .section-title{
    font-size:30px;
  }
  .tab{
    padding:8px 15px;
    font-size:13px;
  }
  .faq-card summary{
    padding:18px 16px;
    gap:12px;
    font-size:15px;
  }
  .qa-num{
    display:none;
  }
  .faq-body{
    padding:2px 18px 22px;
  }
  .faq-icon{
    width:22px;
    height:22px;
  }
  .flow-grid,
  .rec-grid{
    grid-template-columns:1fr;
  }
  .flow-card:last-child{
    grid-column:auto;
  }
  .flow-card,
  .aside-card{
    padding:24px 20px;
  }
  .media-frame img{
    aspect-ratio:16/9;
  }
  .cta-mini{
    padding-block:32px 72px;
  }
  .cta-mini__box{
    flex-direction:column;
    align-items:flex-start;
  }
  .footer__top{
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer{
    padding-top:48px;
  }
  .footer__bottom{
    flex-direction:column;
    align-items:flex-start;
  }
}

/* roulang page: category3 */
/* ===== Design tokens ===== */
:root{
  color-scheme: dark;
  --bg:#0C0E10;
  --surface:#15181B;
  --surface-2:#1D2126;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --text:#F2EEE6;
  --text-2:#A6ADB5;
  --text-3:#727A83;
  --primary:#FF6A00;
  --primary-hover:#FF7D1E;
  --primary-active:#DE5900;
  --primary-glow:rgba(255,106,0,.22);
  --primary-soft:rgba(255,106,0,.12);
  --success:#2FE6A0;
  --warning:#FFC94D;
  --font-heading:"Inter","SF Pro Display","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Microsoft YaHei",sans-serif;
  --font-body:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --reading:"Source Han Serif SC","Noto Serif CJK SC","Songti SC","SimSun",serif;
  --radius-lg:20px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-card:0 12px 36px rgba(0,0,0,.45);
  --container:1280px;
}
/* ===== Base / reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:128px}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
a:focus-visible,button:focus-visible,summary:focus-visible,.btn:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:4px;
  border-radius:var(--radius-sm);
}
ul,ol{list-style:none}
.container{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,32px);
}
.section{
  padding-block:clamp(56px,7vw,96px);
}
.section--tight{
  padding-block:clamp(40px,5vw,72px);
}
/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:46px;
  padding:0 20px;
  border-radius:var(--radius-md);
  font-weight:650;
  font-size:15px;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn svg{width:19px;height:19px;flex:0 0 auto;transition:transform .2s ease}
.btn:hover svg{transform:translateY(2px)}
.btn--primary{
  background:var(--primary);
  color:#17100b;
  box-shadow:0 8px 24px var(--primary-glow);
}
.btn--primary:hover{
  background:var(--primary-hover);
  box-shadow:0 12px 32px var(--primary-glow);
  transform:translateY(-2px);
}
.btn--primary:active{
  background:var(--primary-active);
  transform:translateY(0);
  box-shadow:0 6px 22px var(--primary-glow);
}
.btn--ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn--ghost:hover{
  border-color:var(--primary);
  color:#fff;
  background:rgba(255,255,255,.04);
}
.btn--lg{min-height:56px;padding:0 26px;font-size:16px}
/* ===== Header ===== */
.header{
  position:sticky;
  top:0;
  z-index:110;
  height:72px;
  background:rgba(12,14,16,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header__bar{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-width:0;
  color:var(--text);
}
.brand__mark{
  position:relative;
  width:38px;height:38px;
  border-radius:12px;
  background:#fff;
  color:#111;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;
  flex:0 0 auto;
  overflow:hidden;
}
.brand__mark::after{
  content:"";
  position:absolute;top:0;right:0;
  width:11px;height:11px;
  border-radius:0 0 0 7px;
  background:var(--primary);
}
.brand__mark span{line-height:1;position:relative;z-index:1}
.brand__text{
  display:flex;flex-direction:column;
  font-family:var(--font-heading);
  font-weight:800;font-size:20px;
  letter-spacing:.02em;
  line-height:1.2;
  white-space:nowrap;
}
.brand__text small{
  font-size:11px;
  font-weight:500;
  color:var(--text-3);
  letter-spacing:.14em;
}
.header__cta{
  min-height:42px;
  padding:0 17px;
  font-size:14px;
}
/* ===== Segment tabs ===== */
.subnav{
  position:sticky;
  top:72px;
  z-index:100;
  background:rgba(12,14,16,.95);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.chip-row{
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 0 12px;
  overflow-x:auto;
  scrollbar-width:none;
}
.chip-row::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:36px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--text-2);
  font-size:14px;
  font-weight:500;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:transparent;
  transition:background .2s ease;
}
.chip:hover{
  color:#fff;
  border-color:var(--line-strong);
  background:var(--surface-2);
}
.chip.is-active{
  background:var(--primary);
  color:#0b1013;
  border-color:var(--primary);
  font-weight:700;
  box-shadow:0 4px 16px var(--primary-glow);
}
.chip.is-active::before{background:#16100b}
/* ===== Page hero ===== */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero .container{
  position:relative;
  z-index:3;
  padding-block:clamp(50px,7vw,88px) clamp(44px,6vw,76px);
}
.hero-bg{
  position:absolute;
  inset:0;
  z-index:0;
  background:url('/assets/images/backpic/back-2.webp') center 28%/cover no-repeat;
  opacity:.30;
  filter:saturate(.8);
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,var(--bg) 4%,rgba(12,14,16,.72) 62%,rgba(12,14,16,.32) 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);
  gap:clamp(28px,5vw,72px);
  align-items:center;
}
.crumbs{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:20px;
  font-size:13px;
  color:var(--text-3);
}
.crumbs a{color:var(--text-2);transition:color .2s ease}
.crumbs a:hover{color:var(--primary)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.22em;
  font-weight:600;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:14px;
}
.eyebrow i{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px var(--primary-soft);
}
.hero-title{
  font-family:var(--font-heading);
  font-size:clamp(40px,6vw,76px);
  font-weight:800;
  line-height:1.1;
  letter-spacing:.01em;
  margin-bottom:22px;
  max-width:820px;
  text-wrap:balance;
}
.hero-title .title-mark{
  color:var(--primary);
  position:relative;
}
.hero-title .title-mark::after{
  content:"";
  position:absolute;
  left:0;bottom:-4px;
  width:68%;height:4px;
  border-radius:999px;
  background:var(--primary);
  opacity:.55;
}
.hero-desc{
  max-width:560px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.9;
  margin-bottom:28px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:14px;
}
/* ===== Hero safe panel ===== */
.safe-panel{
  position:relative;
  background:rgba(21,24,27,.92);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:24px;
  overflow:hidden;
}
.safe-panel::before{
  content:"";
  position:absolute;
  width:180px;height:180px;
  right:-70px;top:-70px;
  border-radius:50%;
  background:var(--primary-glow);
  filter:blur(16px);
  pointer-events:none;
}
.safe-panel__head{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  font-weight:600;
  color:var(--text-2);
  letter-spacing:.04em;
}
.status-dot{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--success);
  box-shadow:0 0 0 5px rgba(47,230,160,.12);
}
.safe-panel__title{
  margin:18px 0 20px;
  font-size:20px;
  font-weight:700;
  font-family:var(--font-heading);
}
.safe-list{
  display:grid;
  gap:14px;
}
.safe-list li{
  display:flex;
  align-items:flex-start;
  gap:13px;
  padding:14px 14px 14px 16px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  transition:border-color .2s ease,background .2s ease;
}
.safe-list li:hover{
  border-color:var(--line-strong);
  background:rgba(255,255,255,.045);
}
.ico-check{
  width:24px;height:24px;
  border-radius:50%;
  background:rgba(47,230,160,.12);
  color:var(--success);
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
  margin-top:2px;
}
.ico-check svg{width:14px;height:14px}
.safe-list strong{
  display:block;
  font-size:15px;
  font-weight:650;
  line-height:1.4;
}
.safe-list small{
  color:var(--text-3);
  font-size:13px;
  line-height:1.6;
}
.safe-panel__note{
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--text-3);
  display:flex;
  align-items:center;
  gap:8px;
}
/* ===== Section head ===== */
.section-head{
  max-width:880px;
  margin-bottom:44px;
}
.section-head.center{
  margin-inline:auto;
  text-align:center;
}
.sec-tag{
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-size:12px;
  letter-spacing:.22em;
  font-weight:650;
  color:var(--text);
  text-transform:uppercase;
  margin-bottom:14px;
  color:var(--primary);
}
.sec-tag em{
  font-style:normal;
  color:var(--text-3);
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:2px 10px;
  font-size:11px;
  letter-spacing:.1em;
}
.sec-tag::after{
  content:"";
  width:42px;height:1px;
  background:var(--line-strong);
}
.section-head h2{
  font-family:var(--font-heading);
  font-size:clamp(28px,3.8vw,46px);
  font-weight:760;
  letter-spacing:.01em;
  line-height:1.24;
  margin-bottom:16px;
  text-wrap:balance;
}
.section-head p{
  font-size:16px;
  color:var(--text-2);
  line-height:1.9;
  max-width:720px;
}
/* ===== Feature grid ===== */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.feature-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 22px 22px;
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
  height:100%;
}
.feature-card::after{
  content:"";
  position:absolute;
  top:0;right:0;
  width:92px;height:92px;
  border-radius:0 0 0 100%;
  background:var(--primary-soft);
  opacity:0;
  transition:opacity .25s ease;
}
.feature-card:hover{
  border-color:rgba(255,106,0,.55);
  background:var(--surface-2);
  transform:translateY(-4px);
}
.feature-card:hover::after{opacity:1}
.feature-card__icon{
  width:46px;height:46px;
  border-radius:13px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--primary-soft);
  color:var(--primary);
  margin-bottom:20px;
  transition:background .25s ease,transform .25s ease;
}
.feature-card:hover .feature-card__icon{background:rgba(255,106,0,.2);transform:scale(1.05)}
.feature-card__icon svg{width:23px;height:23px}
.feature-card h3{
  font-size:18px;
  font-weight:700;
  font-family:var(--font-heading);
  line-height:1.4;
  margin-bottom:12px;
}
.feature-card p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.8;
  margin-bottom:14px;
}
.feature-card ul{
  display:grid;
  gap:7px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.feature-card ul li{
  position:relative;
  padding-left:18px;
  color:var(--text-2);
  font-size:13px;
  line-height:1.65;
}
.feature-card ul li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--primary);
}
/* ===== Risk security ===== */
.risk-section{
  background:var(--surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.risk-grid{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:clamp(32px,5vw,80px);
  align-items:start;
}
.risk-title h2{
  font-family:var(--font-heading);
  font-size:clamp(26px,3.4vw,42px);
  font-weight:760;
  line-height:1.25;
  letter-spacing:.01em;
  margin:16px 0 18px;
}
.risk-title p{
  color:var(--text-2);
  font-size:15px;
  max-width:520px;
}
.risk-list{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,.02);
  overflow:hidden;
}
.risk-item{
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:20px;
  padding:22px 24px;
  border-bottom:1px solid var(--line);
  align-items:flex-start;
  transition:background .2s ease;
}
.risk-item:last-child{border-bottom:0}
.risk-item:hover{background:rgba(255,255,255,.04)}
.risk-item__num{
  font-family:var(--font-heading);
  font-size:26px;
  font-weight:800;
  color:var(--primary);
  line-height:1;
  letter-spacing:-.04em;
}
.risk-item__body h3{
  font-size:16px;
  font-weight:700;
  margin-bottom:5px;
  line-height:1.5;
}
.risk-item__body p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.75;
}
.risk-item__tag{
  align-self:center;
  color:var(--warning);
  font-size:12px;
  font-weight:600;
  padding:5px 10px;
  border:1px solid rgba(255,201,77,.35);
  border-radius:999px;
  white-space:nowrap;
}
/* ===== Steps timeline ===== */
.step-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  position:relative;
  counter-reset:steps;
}
.step-art{
  padding:0 22px;
  border-left:1px solid var(--line-strong);
  min-height:200px;
  position:relative;
}
.step-art::before{
  content:counter(steps,decimal-leading-zero);
  counter-increment:steps;
  position:absolute;
  top:0;
  left:0;
  transform:translateX(-50%);
  width:38px;height:38px;
  border-radius:50%;
  background:var(--bg);
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-family:var(--font-heading);
  font-weight:800;
  font-size:14px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:.05em;
}
.step-art h3{
  font-family:var(--font-heading);
  font-size:19px;
  font-weight:700;
  line-height:1.5;
  margin-bottom:10px;
  padding-top:54px;
}
.step-art p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.8;
}
/* ===== Recovery ===== */
.recover-section{
  margin-top:12px;
}
.recovery-panel{
  position:relative;
  overflow:hidden;
  background:var(--surface-2);
  border:1px solid var(--line-strong);
  border-radius:24px;
  padding:clamp(30px,5vw,56px);
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(280px,.7fr);
  gap:clamp(28px,5vw,70px);
  align-items:center;
}
.recover-copy h2{
  font-family:var(--font-heading);
  font-size:clamp(26px,3.4vw,40px);
  font-weight:760;
  line-height:1.3;
  margin:16px 0 18px;
}
.recover-copy p{
  color:var(--text-2);
  font-size:15px;
  max-width:560px;
  margin-bottom:26px;
}
.recover-steps{
  display:grid;
  gap:12px;
}
.recover-step{
  display:flex;
  align-items:flex-start;
  gap:12px;
  color:var(--text);
  font-size:14px;
  padding:11px 15px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
}
.recover-step span{
  width:24px;height:24px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--primary-soft);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:750;
  font-size:13px;
}
/* ===== Explore / recommendation ===== */
.explore-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.explore-card{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.explore-card:hover{
  border-color:rgba(255,106,0,.5);
  transform:translateY(-4px);
  box-shadow:var(--shadow-card);
}
.explore-card__media{
  position:relative;
  aspect-ratio:16/9;
  display:block;
  overflow:hidden;
  background:#202428;
}
.explore-card__media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.explore-card:hover .explore-card__media img{
  transform:scale(1.03);
}
.explore-card__media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(12,14,16,.45));
}
.explore-card__body{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:16px 18px 18px;
}
.explore-card__body small{
  display:block;
  color:var(--text-3);
  font-size:12px;
  letter-spacing:.08em;
  margin-bottom:3px;
}
.explore-card__body strong{
  font-size:16px;
  font-weight:700;
  font-family:var(--font-heading);
  line-height:1.4;
}
.explore-card__arrow{
  width:30px;height:30px;
  flex:0 0 auto;
  border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);
  color:var(--primary);
  transition:background .2s ease,transform .2s ease;
}
.explore-card__arrow svg{width:17px;height:17px}
.explore-card:hover .explore-card__arrow{
  background:var(--primary);
  color:#13100d;
  transform:translateX(3px);
}
/* ===== FAQ ===== */
.faq-section{
  background:var(--surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.faq-wrap{
  display:grid;
  grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);
  gap:clamp(30px,5vw,76px);
  align-items:start;
}
.faq-head{position:sticky;top:130px}
.faq-head h2{
  font-family:var(--font-heading);
  font-size:clamp(27px,3.6vw,44px);
  font-weight:760;
  line-height:1.28;
  margin:16px 0 18px;
}
.faq-head p{color:var(--text-2);font-size:15px;max-width:460px}
.faq-list{
  display:grid;
  gap:12px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--bg);
  overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{
  border-color:rgba(255,106,0,.45);
}
.faq-item summary{
  cursor:pointer;
  list-style:none;
  display:flex;
  align-items:center;
  gap:14px;
  justify-content:space-between;
  font-weight:600;
  font-size:15px;
  padding:17px 18px;
  line-height:1.55;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item__icon{
  width:22px;height:22px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--primary-soft);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
}
.faq-item__icon svg{width:14px;height:14px;transition:transform .25s ease}
.faq-item[open] .faq-item__icon svg{transform:rotate(45deg)}
.faq-body{
  padding:0 18px 18px;
  color:var(--text-2);
  font-size:14px;
  line-height:1.85;
  padding-left:54px;
}
.faq-body p+ p{margin-top:8px}
/* ===== CTA strip ===== */
.cta-strip{
  padding-block:clamp(52px,7vw,88px);
}
.cta-strip__card{
  background:var(--surface-2);
  border:1px solid var(--line-strong);
  border-radius:24px;
  padding:clamp(30px,5vw,56px);
  position:relative;
  overflow:hidden;
}
.cta-strip__card::before{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:260px;height:260px;
  border-radius:50%;
  background:var(--primary-glow);
  filter:blur(50px);
  pointer-events:none;
}
.cta-strip__inner{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:26px;
  justify-content:space-between;
}
.cta-strip__text h2{
  font-size:clamp(25px,3.2vw,38px);
  font-weight:760;
  line-height:1.35;
  margin-bottom:10px;
  font-family:var(--font-heading);
}
.cta-strip__text p{
  color:var(--text-2);
  font-size:14px;
}
.cta-strip__inner .btn{
  flex-shrink:0;
  min-width:220px;
}
/* ===== Footer ===== */
.footer{
  border-top:1px solid var(--line);
  padding-top:56px;
  background:#08090a;
  color:var(--text-2);
}
.footer__top{
  display:grid;
  grid-template-columns:1.25fr .8fr .8fr 1.1fr;
  gap:32px;
  padding-bottom:48px;
}
.footer__top h4{
  font-size:14px;
  font-weight:700;
  color:var(--text);
  margin-bottom:18px;
  font-family:var(--font-heading);
}
.footer .brand{margin-bottom:16px}
.footer__desc{
  font-size:13px;
  line-height:1.9;
  color:var(--text-3);
  max-width:340px;
}
.footer__links{
  display:grid;
  gap:9px;
}
.footer__links a{
  font-size:13px;
  color:var(--text-2);
  line-height:1.6;
  width:fit-content;
  transition:color .2s ease;
}
.footer__links a:hover{color:var(--primary)}
.footer__safe{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:12px;
  line-height:1.85;
  color:var(--text-3);
  padding:14px;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.025);
}
.footer__safe svg{
  width:25px;height:25px;
  color:var(--success);
  flex:0 0 auto;
}
.footer__bottom{
  border-top:1px solid var(--line);
  padding-block:22px;
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  font-size:12px;
  color:var(--text-3);
}
.footer__bottom .f-domain{color:var(--text-2)}
/* ===== Responsive ===== */
@media(max-width:1100px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .footer__top{grid-template-columns:1fr 1fr}
  .explore-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr}
  .faq-head{position:static}
  .step-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .step-art{padding:0 20px 0 32px}
  .step-art::before{position:absolute;left:0;bottom:auto;transform:none}
  .step-art h3{padding-top:10px}
}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .safe-panel{max-width:560px}
  .risk-grid{grid-template-columns:1fr}
  .recovery-panel{grid-template-columns:1fr}
  .recover-steps{margin-top:10px}
  .cta-strip__inner{align-items:flex-start;flex-direction:column}
}
@media(max-width:640px){
  .header__cta{min-width:0;padding:0 14px}
  .header__cta span{display:none}
  .brand__text{font-size:17px}
  .chip-row{padding:10px 12px 12px;margin-inline:-16px}
  .chip{min-height:34px}
  .hero-title{font-size:clamp(34px,9vw,48px)}
  .page-hero .container{padding-top:34px;padding-bottom:48px}
  .feature-grid{grid-template-columns:1fr}
  .explore-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:34px}
  .section-head p{font-size:14px}
  .risk-item{grid-template-columns:1fr;gap:10px}
  .risk-item__tag{justify-self:start}
  .footer__top{grid-template-columns:1fr}
  .recovery-panel{padding:26px 20px}
  .recover-step{font-size:13px}
  .cta-strip__card{padding:28px 20px}
  .btn--lg{width:100%}
  .cta-strip__inner .btn{min-width:0;width:100%}
}