/* roulang page: index */
:root{
  --bg-deepest:#060A14;
  --bg-vast:#0A1120;
  --bg-sidebar:rgba(7,12,23,0.96);
  --bg-glass:rgba(13,20,36,0.56);
  --bg-glass-strong:rgba(8,14,26,0.82);
  --bg-card:rgba(16,25,44,0.48);
  --primary:#3579FF;
  --primary-bright:#4C8DFF;
  --primary-dim:rgba(53,121,255,0.14);
  --cyan:#39E0D0;
  --gold:#F0B36A;
  --red:#E4626F;
  --text-main:rgba(230,238,255,0.94);
  --text-sub:rgba(162,178,210,0.72);
  --text-dim:rgba(120,140,175,0.52);
  --line:rgba(140,175,255,0.16);
  --line-bright:rgba(140,175,255,0.34);
  --r-btn:10px;
  --r-card:16px;
  --r-panel:20px;
  --r-tag:999px;
  --shadow-card:0 8px 28px rgba(0,0,0,0.22);
  --shadow-glow:0 10px 34px rgba(53,121,255,0.22);
  --sw:240px;
  --font:-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:
    radial-gradient(ellipse 720px 340px at 8% -5%, rgba(37,84,168,0.28), transparent 62%),
    radial-gradient(ellipse 900px 520px at 112% 24%, rgba(24,101,113,0.15), transparent 58%),
    var(--bg-deepest);
  color:var(--text-main);
  line-height:1.75;
  min-height:100vh;
  overflow-x:hidden;
}
::selection{background:rgba(57,224,208,0.24);color:#fff}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea{font-family:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

.sk-mobilebar{
  position:fixed;top:0;left:0;right:0;height:64px;z-index:60;
  display:none;align-items:center;justify-content:space-between;
  padding:0 18px;
  background:rgba(6,10,20,0.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.sk-mobilebar .sk-brand{
  display:flex;align-items:center;gap:10px;
  max-width:calc(100% - 86px);
}
.sk-mobilebar .sk-logo{width:32px;height:32px}
.sk-mobilebar .sk-brand-text{
  font-size:16px;font-weight:800;letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.sk-burger{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:rgba(14,22,38,.7);
  transition:border-color .2s,background .2s;
}
.sk-burger:hover,.sk-burger.is-open{border-color:var(--line-bright);background:var(--primary-dim)}
.sk-burger span{width:18px;height:2px;background:rgba(230,238,255,.9);border-radius:2px;transition:transform .3s,opacity .2s}
.sk-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.sk-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.sk-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.sk-overlay{
  position:fixed;inset:0;background:rgba(3,6,14,0.66);
  opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;z-index:55;
}
.sk-overlay.is-visible{opacity:1;visibility:visible}

.sk-sidebar{
  position:fixed;top:0;bottom:0;left:0;z-index:100;
  width:var(--sw);
  display:flex;flex-direction:column;
  padding:22px 16px 18px;
  background:var(--bg-sidebar);
  border-right:1px solid rgba(140,175,255,.1);
  overflow-y:auto;
}
.sk-brand{
  display:flex;align-items:center;gap:10px;
  padding:2px 6px 20px;
  border-bottom:1px solid rgba(140,175,255,.1);
}
.sk-logo{
  width:38px;height:38px;flex:0 0 38px;
  display:block;border-radius:12px;
  background:rgba(53,121,255,.1);
  box-shadow:0 0 22px rgba(53,121,255,.12);
}
.sk-brand-text{
  font-size:17px;font-weight:800;line-height:1.35;letter-spacing:.02em;
  min-width:0;word-break:break-all;color:rgba(236,244,255,.95);
}
.sk-nav{margin:28px 0 20px;display:flex;flex-direction:column;gap:6px}
.sk-nav-label{
  font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;
  color:var(--text-dim);padding:0 12px 8px;
}
.sk-nav-item{
  display:flex;align-items:center;gap:10px;
  min-height:46px;padding:0 14px;
  border-radius:12px;border:1px solid transparent;
  color:var(--text-sub);font-size:15px;font-weight:500;
  position:relative;transition:background .2s,border-color .2s,color .2s,transform .2s;
}
.sk-nav-item .nav-ico{
  width:18px;height:18px;flex-shrink:0;
  opacity:.7;transition:opacity .2s;
}
.sk-nav-item:hover{
  color:rgba(238,246,255,.95);
  background:rgba(140,175,255,.06);
}
.sk-nav-item:active{transform:translateY(1px)}
.sk-nav-item.is-active{
  background:var(--primary-dim);
  border-color:rgba(53,121,255,.26);
  color:rgba(242,248,255,.98);
}
.sk-nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:4px;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(57,224,208,.5);
}
.sk-nav-item.is-active .nav-ico{opacity:1}
.sk-nav-note{
  margin-top:auto;
  padding:12px;
  border-radius:14px;
  background:rgba(57,224,208,.06);
  border:1px solid rgba(57,224,208,.15);
  display:flex;gap:8px;align-items:flex-start;
  color:var(--text-sub);font-size:12px;line-height:1.6;
}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);flex-shrink:0;margin-top:6px;box-shadow:0 0 0 3px rgba(57,224,208,.12)}
.sk-copy{
  padding:16px 6px 0;font-size:11px;color:var(--text-dim);line-height:1.7;
}

.sk-main{margin-left:var(--sw);min-width:0;padding-top:0}
.section{width:100%;padding:clamp(62px,8vw,102px) clamp(24px,5.6vw,60px)}
.section-inner{max-width:1200px;margin:0 auto}
.section-alt{background:rgba(255,255,255,.012);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.row{display:grid;gap:32px}
.hero{
  position:relative;
  padding:clamp(72px,10vw,110px) clamp(24px,6vw,72px) clamp(54px,8vw,80px);
  overflow:hidden;
  background:
    linear-gradient(180deg,rgba(6,10,20,.25),rgba(6,10,20,.86) 78%),
    radial-gradient(circle 420px at 72% 24%,rgba(53,121,255,.2),transparent 62%),
    url('/assets/images/backpic/back-2.webp') center 20% / cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 20% 40%,rgba(255,255,255,.2),transparent 1px),
    radial-gradient(1px 1px at 60% 68%,rgba(255,255,255,.18),transparent 1px),
    radial-gradient(1.5px 1.5px at 85% 30%,rgba(57,224,208,.22),transparent 1px),
    radial-gradient(1px 1px at 14% 80%,rgba(255,255,255,.16),transparent 1px);
  opacity:0.5;
}
.hero-inner{
  max-width:1200px;margin:0 auto;
  display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.85fr);
  gap:48px;align-items:center;
  position:relative;z-index:1;
}
.hero-kick{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px 5px 9px;
  border-radius:999px;font-size:13px;font-weight:600;color:var(--cyan);
  background:rgba(57,224,208,.08);border:1px solid rgba(57,224,208,.2);
  margin-bottom:22px;
}
.hero-kick i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 3px rgba(57,224,208,.16)}
.hero h1{
  font-size:clamp(31px,5vw,53px);font-weight:850;line-height:1.18;letter-spacing:-.02em;
  text-shadow:0 4px 24px rgba(3,8,18,.55);
}
.hero-lead{
  margin-top:20px;max-width:600px;
  font-size:16px;line-height:1.95;color:var(--text-sub);
}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero-points{
  margin-top:32px;list-style:none;display:flex;flex-wrap:wrap;gap:10px 24px;
}
.hero-points li{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-sub);
}
.hero-points li::before{
  content:"";width:16px;height:16px;border-radius:50%;
  background:rgba(57,224,208,.12);border:1px solid rgba(57,224,208,.24);
  background-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%2339E0D0" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6 9 17l-5-5"/></svg>');
  background-size:10px;background-position:center;background-repeat:no-repeat;
  flex:0 0 16px;margin-top:2px;
}

.signin-panel{
  background:linear-gradient(160deg,rgba(14,23,43,.7),rgba(7,12,24,.8));
  border:1px solid rgba(140,175,255,.24);
  border-radius:var(--r-panel);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  padding:28px;
  box-shadow:0 22px 60px rgba(0,0,0,.38);
}
.panel-head{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-bottom:20px;
}
.panel-title{font-size:19px;font-weight:700;color:rgba(238,247,255,.97)}
.panel-secure{
  display:flex;align-items:center;gap:6px;
  font-size:11px;color:var(--cyan);
  background:rgba(57,224,208,.09);padding:4px 9px;border-radius:999px;
  white-space:nowrap;
}
.panel-secure i{width:5px;height:5px;border-radius:50%;background:var(--cyan)}
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:12px;margin-bottom:6px;color:var(--text-sub);letter-spacing:.05em}
.form-input{
  width:100%;height:46px;padding:0 13px;
  background:rgba(3,8,18,.52);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text-main);font-size:14px;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.form-input::placeholder{color:var(--text-dim)}
.form-input:hover{border-color:rgba(140,175,255,.28)}
.form-input:focus{
  outline:none;border-color:var(--primary-bright);
  box-shadow:0 0 0 3px rgba(53,121,255,.22);
  background:rgba(5,11,22,.72);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  white-space:nowrap;text-align:center;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s,filter .2s;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(180deg,#417EFB,#2D65E8);
  color:#fff;
  box-shadow:0 8px 24px rgba(45,100,232,.24);
  border:1px solid rgba(255,255,255,.1);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 30px rgba(53,121,255,.32);
  filter:saturate(1.08);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(45,100,232,.2)}
.btn-glow{box-shadow:0 0 0 1px rgba(255,255,255,.08),0 10px 34px rgba(53,121,255,.26)}
.btn-glow:hover{box-shadow:0 0 0 1px rgba(255,255,255,.1),0 12px 40px rgba(57,224,208,.2)}
.btn-block{width:100%}
.btn-ghost{
  background:rgba(16,26,46,.34);
  border:1px solid var(--line-bright);
  color:rgba(224,233,255,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  background:rgba(140,175,255,.08);
  border-color:rgba(174,202,255,.5);
  color:#fff;
}
.btn-line{
  height:42px;padding:0 16px;font-size:13px;
  background:transparent;border:1px solid var(--line);
  color:var(--text-sub);border-radius:10px;
}
.btn-line:hover{border-color:var(--line-bright);color:var(--text-main);background:rgba(255,255,255,.02)}
.btn-sm{height:38px;padding:0 15px;font-size:13px}
.form-actions{margin-top:4px}
.form-links{
  display:flex;justify-content:space-between;align-items:center;
  margin-top:13px;font-size:12px;
}
.form-links a{color:var(--text-sub);transition:color .2s}
.form-links a:hover{color:var(--cyan)}
.panel-tip{
  margin-top:17px;padding-top:14px;border-top:1px solid rgba(140,175,255,.13);
  display:flex;gap:8px;align-items:flex-start;
  font-size:11px;line-height:1.7;color:var(--text-dim);
}
.panel-tip svg{flex:0 0 15px;margin-top:2px}

/* section title */
.sec-head{margin-bottom:clamp(26px,4vw,44px);max-width:760px}
.sec-title{
  font-size:clamp(23px,3.4vw,33px);
  line-height:1.35;
  font-weight:750;
  letter-spacing:-.015em;
}
.sec-title .mk{color:var(--cyan)}
.sec-sub{
  margin-top:10px;font-size:14px;line-height:1.85;
  color:var(--text-sub);
}
.sec-head-row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
}
.sec-more{
  flex:0 0 auto;font-size:13px;font-weight:600;color:var(--text-sub);
  padding:8px 0;transition:color .2s;
}
.sec-more:hover{color:var(--cyan)}

/* Bento */
.bento-grid{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
 grid-auto-rows:minmax(112px,auto);gap:18px;
}
.bento-card{
 position:relative;min-height:168px;padding:24px;
 background:var(--bg-card);
 border:1px solid var(--line);
 border-radius:var(--r-card);
 backdrop-filter:blur(14px);
 -webkit-backdrop-filter:blur(14px);
 box-shadow:var(--shadow-card);
 overflow:hidden;
 transition:transform .25s,border-color .25s,background .25s,box-shadow .25s;
}
.bento-card:hover{
 transform:translateY(-3px);
 border-color:rgba(140,175,255,.34);
 background:rgba(20,32,56,.64);
 box-shadow:0 16px 38px rgba(0,0,0,.25),0 0 0 1px rgba(141,175,255,.06);
}
.bento-card:active{transform:translateY(0)}
.bento-icon{
  width:42px;height:42px;border-radius:12px;
  background:rgba(53,121,255,.12);border:1px solid rgba(53,121,255,.22);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary-bright);
  margin-bottom:16px;
}
.bento-icon.gold{background:rgba(240,179,106,.12);border-color:rgba(240,179,106,.24);color:var(--gold)}
.bento-icon.cyan{background:rgba(57,224,208,.1);border-color:rgba(57,224,208,.24);color:var(--cyan)}
.bento-kicker{
 display:inline-block;padding:3px 10px;border-radius:999px;
 font-size:11px;letter-spacing:.08em;color:var(--cyan);
 background:rgba(57,224,208,.08);border:1px solid rgba(57,224,208,.18);
 margin-bottom:10px;
}
.bento-card h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:7px}
.bento-card p{font-size:13.5px;color:var(--text-sub);line-height:1.75}
.bento-card .bento-link{
 margin-top:16px;display:inline-flex;align-items:center;gap:5px;
 font-size:12px;font-weight:600;color:var(--primary-bright);
}
.bento-card .bento-link:hover{color:var(--cyan)}
.bento-b{
 grid-column:span 2;
}
.bento-c{min-height:140px}
.bento-card.bento-a{
 grid-row:span 2;
 background:linear-gradient(155deg,rgba(19,41,85,.66),rgba(8,15,31,.66));
}
.bento-card.bento-a .bento-img{
 position:absolute;right:-12px;bottom:-10px;width:52%;opacity:.35;filter:saturate(.8);
 border-radius:10px;pointer-events:none;transform:rotate(-2deg);
}
.bento-card.bento-wide{grid-column:span 2}
@media(max-width:1240px){
 .bento-grid{grid-auto-rows:auto}
 .bento-card.bento-a,.bento-card.bento-b{grid-column:span 2}
 .bento-card.bento-c{grid-column:span 1}
 .bento-card.bento-wide{grid-column:span 2}
}

/* assurance */
.assurance-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  padding:4px 0 20px;
}
.ass-card{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;
  background:rgba(14,23,42,.42);
  border:1px solid rgba(140,175,255,.1);
  border-radius:14px;
}
.ass-card i{
  flex:0 0 38px;width:38px;height:38px;border-radius:11px;
  background:rgba(57,224,208,.09);border:1px solid rgba(57,224,208,.18);
  display:flex;align-items:center;justify-content:center;
}
.ass-card.android i{background:rgba(240,179,106,.1);border-color:rgba(240,179,106,.2)}
.ass-card b{display:block;font-size:14px;font-weight:700;color:rgba(233,241,255,.96);letter-spacing:.02em}
.ass-card small{font-size:11.5px;color:var(--text-dim)}

/* carousel */
.carousel-shell{position:relative}
.carousel-viewport{overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;scroll-behavior:smooth}
.carousel-viewport::-webkit-scrollbar{display:none}
.carousel-track{display:flex;gap:16px;width:max-content}
.quote-card{
  width:calc((100% - 18px)/2);flex:0 0 calc((100% - 18px)/2);
  scroll-snap-align:start;
  padding:24px;
  background:linear-gradient(155deg,rgba(18,31,57,.5),rgba(10,18,33,.5));
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
}
.quote-stars{display:flex;gap:3px;margin-bottom:12px}
.quote-stars svg{width:15px;height:15px}
.quote-text{font-size:14.5px;line-height:1.85;color:var(--text-sub)}
.quote-name{
  margin-top:18px;display:flex;align-items:center;gap:10px;
  font-size:12px;color:var(--text-dim);
}
.avatar{
  width:30px;height:30px;border-radius:50%;background:rgba(53,121,255,.18);
  border:1px solid rgba(53,121,255,.3);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--primary-bright);
}
.avatar.gold{background:rgba(240,179,106,.16);border-color:rgba(240,179,106,.3);color:var(--gold)}
.carousel-nav{
  display:flex;justify-content:flex-end;gap:10px;margin-top:18px;
}
.car-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:rgba(15,26,44,.5);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-sub);
  transition:border-color .2s,color .2s,background .2s,transform .2s;
}
.car-btn:hover{color:var(--cyan);border-color:rgba(57,224,208,.45);background:rgba(57,224,208,.08);transform:translateY(-2px)}
.car-btn:active{transform:translateY(0)}

/* Post list */
.stack-list{display:flex;flex-direction:column;gap:12px}
.post-row{
  display:grid;grid-template-columns:142px 1fr;gap:20px;
  padding:16px;
  background:rgba(12,21,38,.52);
  border:1px solid var(--line);
  border-radius:14px;
  transition:border-color .25s,background .25s,transform .25s;
}
.post-row:hover{
  background:rgba(18,31,52,.65);
  border-color:var(--line-bright);
  transform:translateX(4px);
}
.post-thumb{
  width:142px;height:94px;border-radius:10px;overflow:hidden;
  background:rgba(140,160,200,.08);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-dim);font-size:12px;
}
.post-thumb img{width:100%;height:100%;object-fit:cover}
.post-body{
  display:flex;flex-direction:column;align-items:flex-start;
  min-width:0;
}
.post-tag{
  font-size:11px;font-weight:600;padding:3px 10px;
  border-radius:999px;color:var(--gold);
  background:rgba(240,179,106,.08);
  border:1px solid rgba(240,179,106,.2);
  margin-bottom:7px;
}
.post-target{font-size:11px;font-weight:600;padding:3px 10px;border-radius:999px;color:var(--cyan);background:rgba(57,224,208,.08);border:1px solid rgba(57,224,208,.2);margin-bottom:7px}
.post-title{font-size:16px;line-height:1.55;font-weight:650;margin-bottom:5px;color:rgba(235,244,255,.96)}
.post-desc{
 font-size:13.5px;line-height:1.7;color:var(--text-sub);
 margin-bottom:9px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
 display:flex;align-items:center;gap:12px;margin-top:auto;
 font-size:11.5px;color:var(--text-dim);
}
.post-meta time::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--text-dim);display:inline-block;vertical-align:middle;margin-right:7px;margin-top:-2px}
.empty-tip{
 padding:42px 20px;text-align:center;
 color:var(--text-dim);font-size:14px;
 border:1px dashed rgba(140,175,255,.18);
 border-radius:14px;background:rgba(11,18,36,.42);
}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);
  background:rgba(13,22,38,.44);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:border-color .22s,background .22s;
}
.faq-item:hover{border-color:rgba(140,175,255,.28);background:rgba(17,27,47,.52)}
.faq-item summary{
  cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  padding:17px 20px;font-size:15px;font-weight:600;
  color:rgba(235,245,255,.94);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  width:26px;height:26px;border-radius:50%;flex:0 0 26px;
  border:1px solid var(--line-bright);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-sub);font-size:17px;font-weight:400;
  transition:transform .25s,color .2s,border-color .2s;
}
.faq-item[open] .faq-icon{
 transform:rotate(45deg);
 color:var(--cyan);border-color:rgba(57,224,208,.5);
}
.faq-answer{
  padding:0 20px 18px;color:var(--text-sub);
  font-size:14px;line-height:1.9;max-width:720px;
}
.faq-answer strong{color:var(--text-main);font-weight:600}

/* CTA */
.cta-block{
  position:relative;overflow:hidden;
  border-radius:22px;
  padding:clamp(30px,5vw,54px);
  background:
    linear-gradient(100deg,rgba(5,11,22,.92),rgba(7,16,31,.72)),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  border:1px solid rgba(140,175,255,.18);
  box-shadow:0 25px 60px rgba(0,0,0,.22);
}
.cta-grid{
  display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center;
  position:relative;z-index:1;
}
.cta-sub{font-size:13px;color:var(--cyan);margin-bottom:12px}
.cta-title{font-size:clamp(20px,2.8vw,30px);line-height:1.4;font-weight:750;margin-bottom:14px}
.cta-desc{color:var(--text-sub);font-size:14px;line-height:1.9;max-width:620px}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}
.cta-side{display:flex;justify-content:flex-end}

/* footer */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(5,9,18,.64);
}
.footer-inner{
  max-width:1200px;margin:0 auto;
  padding:52px 28px 30px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:34px;
}
.footer-brand .sk-logo{width:34px;height:34px;flex-basis:34px;margin-bottom:14px}
.footer-brand p{font-size:13px;line-height:1.9;color:var(--text-sub);max-width:340px}
.footer-h{font-size:13px;color:var(--text-main);font-weight:650;margin-bottom:14px;letter-spacing:.04em}
.footer-link{display:block;padding:4px 0;font-size:13px;color:var(--text-sub);transition:color .2s}
.footer-link:hover{color:var(--cyan)}
.footer-note{
  border-top:1px solid rgba(140,175,255,.1);
  padding:20px 28px 28px;
}
.footer-note-inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;font-size:11px;color:var(--text-dim);
}
.footer-note-inner a{color:var(--text-dim)}
.footer-note-inner a:hover{color:var(--cyan)}

/* backtop */
.backtop{
  position:fixed;right:24px;bottom:30px;z-index:90;
  width:46px;height:46px;border-radius:50%;
  background:rgba(10,19,34,.86);
  border:1px solid rgba(140,175,255,.3);
  box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-sub);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s,transform .25s,color .25s,border-color .25s;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.backtop.show{opacity:1;visibility:visible;transform:translateY(0)}
.backtop:hover{color:var(--cyan);border-color:rgba(57,224,208,.5)}
.backtop:active{transform:translateY(1px)}

/* responsive */
@media(max-width:1279px){
  .bento-grid{grid-template-columns:repeat(3,1fr)}
  .bento-card.bento-a,.bento-card.bento-b{grid-column:span 2}
  .bento-card.bento-wide{grid-column:span 3}
  .bento-card.bento-c{grid-column:span 1}
}
@media(max-width:1023px){
  .sk-mobilebar{display:flex}
  .sk-sidebar{
    transform:translateX(-100%);
    transition:transform .32s ease,visibility .32s;
    visibility:hidden;
    box-shadow:18px 0 50px rgba(0,0,0,.4);
  }
  .sk-sidebar.is-open{transform:translateX(0);visibility:visible}
  .sk-main{margin-left:0;padding-top:64px}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .signin-panel{max-width:500px;width:100%}
  .cta-grid{grid-template-columns:1fr}
  .cta-side{justify-content:flex-start}
  .bento-grid{grid-template-columns:repeat(2,1fr)}
  .bento-card.bento-a,.bento-card.bento-b,.bento-card.bento-wide{grid-column:span 2}
  .bento-card.bento-c{grid-column:span 1}
}
@media(max-width:767px){
  .section{padding:52px 18px}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:4px}
  .hero{padding:52px 18px 62px}
  .hero-inner{gap:28px}
  .assurance-grid{
    grid-template-columns:repeat(2,1fr);
    gap:10px;
  }
  .ass-card{padding:12px 10px;gap:10px}
  .quote-card{width:100%;flex-basis:100%}
  .bento-grid{grid-template-columns:1fr}
  .bento-card.bento-a,.bento-card.bento-b,.bento-card.bento-c,.bento-card.bento-wide{grid-column:span 1}
  .post-row{grid-template-columns:88px 1fr;gap:14px;padding:11px 12px}
  .post-thumb{width:88px;height:72px}
  .post-title{font-size:14.5px}
  .post-desc{font-size:12px;-webkit-line-clamp:2}
  .post-meta{flex-wrap:wrap;gap:6px 12px}
  .cta-btns .btn{flex:1 1 auto}
  .footer-inner{grid-template-columns:1fr;gap:24px;padding:42px 20px 24px}
  .footer-note{padding:16px 20px 22px}
  .footer-note-inner{flex-direction:column;align-items:flex-start}
  .backtop{right:14px;bottom:18px}
}
@media(max-width:575px){
  .btn{width:100%}
  .hero-actions .btn{width:100%}
  .btn-ghost{width:100%}
  .sk-mobilebar .sk-brand-text{font-size:14.5px}
  .form-links{flex-direction:column;gap:8px}
  .signin-panel{padding:20px}
  .bento-card{padding:18px}
  .quote-card{padding:19px}
  .faq-item summary{font-size:14px;padding:15px 14px}
  .faq-answer{font-size:13px;padding:0 14px 16px}
  .cta-block{padding:26px 18px}
  .post-title{font-size:14px}
}

/* roulang page: category1 */
:root {
  --bg-page: #060A14;
  --bg-body: #081024;
  --bg-panel: rgba(13, 22, 40, 0.78);
  --bg-card: rgba(15, 25, 44, 0.64);
  --bg-soft: rgba(20, 33, 58, 0.5);
  --bg-nav: rgba(6, 10, 20, 0.9);
  --primary: #4C8DFF;
  --primary-hover: #3C76EC;
  --cyan: #39E0D0;
  --gold: #F0B36A;
  --danger: #F27B6B;
  --success: #3BD2A3;
  --text-strong: rgba(232, 239, 255, 0.94);
  --text-main: rgba(207, 220, 245, 0.86);
  --text-sub: rgba(162, 178, 210, 0.72);
  --text-mut: rgba(120, 140, 175, 0.52);
  --border: rgba(140, 175, 255, 0.16);
  --border-strong: rgba(160, 190, 255, 0.34);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.22);
  --shadow-primary: 0 10px 32px rgba(76, 141, 255, 0.34);
  --font-cn: -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

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

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

body {
  font-family: var(--font-cn);
  background:
    radial-gradient(circle at 14% 8%, rgba(76, 141, 255, 0.1), transparent 26%),
    radial-gradient(circle at 86% 74%, rgba(57, 224, 208, 0.06), transparent 30%),
    radial-gradient(circle at 48% 100%, rgba(10, 20, 40, 0.3), transparent 40%),
    var(--bg-page);
  color: var(--text-main);
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    radial-gradient(circle at 20% 14%, rgba(255, 255, 255, 0.15) 0.6px, transparent 1px),
    radial-gradient(circle at 68% 30%, rgba(255, 255, 255, 0.1) 0.4px, transparent 1px),
    radial-gradient(circle at 30% 72%, rgba(255, 255, 255, 0.1) 0.4px, transparent 1px),
    radial-gradient(circle at 78% 82%, rgba(57, 224, 208, 0.16) 0.6px, transparent 1.2px),
    radial-gradient(circle at 88% 12%, rgba(255, 255, 255, 0.12) 0.5px, transparent 1px),
    radial-gradient(circle at 10% 46%, rgba(255, 255, 255, 0.08) 0.4px, transparent 1px),
    radial-gradient(circle at 56% 58%, rgba(255, 255, 255, 0.1) 0.6px, transparent 1.2px);
  background-size: 100px 100px, 120px 120px, 88px 88px, 140px 140px, 92px 92px, 110px 110px, 76px 76px;
}

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

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

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

ul,
ol {
  list-style: none;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

.sk-layout {
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.sk-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 240px;
  height: 100vh;
  z-index: 220;
  background: rgba(5, 9, 18, 0.96);
  border-right: 1px solid rgba(140, 175, 255, 0.12);
  display: flex;
  flex-direction: column;
  padding: 0 14px 20px;
  transition: transform 0.26s ease;
}

.sk-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 26px 8px 20px;
  color: var(--text-strong);
}

.sk-logo {
  width: 34px;
  height: 34px;
  flex: none;
}

.sk-brand-text {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.5px;
  line-height: 1.5;
  color: rgba(235, 242, 255, 0.96);
}

.sk-nav {
  padding: 12px 4px;
  flex: 1;
}

.sk-nav-label {
  font-size: 12px;
  color: var(--text-mut);
  letter-spacing: 2px;
  padding: 8px 10px 10px;
}

.sk-nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 12px;
  margin-bottom: 5px;
  border-radius: var(--radius-sm);
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.4;
  transition: background 0.2s ease, color 0.2s ease, border 0.2s ease;
  position: relative;
}

.sk-nav-item:hover {
  color: var(--text-strong);
  background: rgba(255, 255, 255, 0.045);
}

.sk-nav-item.is-active {
  color: #fff;
  background: rgba(76, 141, 255, 0.14);
}

.sk-nav-item.is-active::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 99px;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(76, 141, 255, 0.7);
}

.nav-ico {
  width: 20px;
  height: 20px;
  flex: none;
  color: currentColor;
}

.sk-side-safe {
  border: 1px solid rgba(140, 175, 255, 0.13);
  border-radius: var(--radius-md);
  background: rgba(14, 24, 44, 0.7);
  padding: 16px 15px;
  margin-bottom: 16px;
}

.safe-h {
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.4px;
  margin-bottom: 6px;
}

.sk-side-safe p {
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.7;
}

.btn-side {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 12px;
  height: 34px;
  padding: 0 12px;
  border-radius: 8px;
  background: rgba(76, 141, 255, 0.16);
  border: 1px solid rgba(76, 141, 255, 0.3);
  font-size: 13px;
  color: rgba(225, 236, 255, 0.92);
  transition: background 0.2s ease;
}

.btn-side:hover {
  background: rgba(76, 141, 255, 0.28);
}

.sk-copy {
  font-size: 11px;
  color: var(--text-mut);
  line-height: 1.8;
  padding: 0 8px 8px;
}

.sk-main {
  margin-left: 240px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.page-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 30px clamp(18px, 3.4vw, 50px) 64px;
  flex: 1;
}

.sk-mobile-top {
  display: none;
}

.nav-overlay {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border: 0;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.2s ease, background 0.2s ease, border 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

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

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-strong);
  color: var(--text-strong);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(160, 190, 255, 0.58);
  transform: translateY(-1px);
}

/* 分类页首页横幅 */
.cat-banner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  min-height: 236px;
  display: flex;
  align-items: flex-end;
  margin-bottom: 62px;
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.16);
}

.cat-banner-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center 26%;
}

.cat-banner-mask {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(5, 9, 18, 0.96) 4%, rgba(7, 13, 26, 0.85) 40%, rgba(7, 13, 26, 0.48) 100%),
    radial-gradient(circle at 80% 16%, rgba(57, 224, 208, 0.07), transparent 42%);
}

.cat-banner-content {
  position: relative;
  z-index: 2;
  padding: clamp(24px, 4vw, 46px) clamp(22px, 4vw, 54px) clamp(28px, 4vw, 46px);
  width: 100%;
}

.crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.crumb a {
  color: var(--text-sub);
  transition: color 0.2s ease;
}

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

.crumb-sep {
  color: var(--text-mut);
}

.cat-kicker {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  color: var(--gold);
  background: rgba(240, 179, 106, 0.1);
  border: 1px solid rgba(240, 179, 106, 0.2);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}

.cat-banner h1 {
  font-size: clamp(30px, 4.2vw, 44px);
  line-height: 1.25;
  color: rgba(238, 244, 255, 0.98);
  letter-spacing: -0.3px;
  font-weight: 800;
  margin-bottom: 12px;
}

.cat-banner .lead {
  max-width: 680px;
  font-size: 15px;
  color: rgba(193, 207, 234, 0.82);
  line-height: 1.8;
}

.section {
  margin: 0 auto 72px;
}

.sec-head {
  margin-bottom: 28px;
}

.sec-label {
  display: inline-block;
  font-size: 13px;
  color: var(--cyan);
  background: rgba(57, 224, 208, 0.08);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 12px;
  letter-spacing: 0.4px;
}

.sec-head h2 {
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.4;
  color: var(--text-strong);
  font-weight: 700;
  letter-spacing: -0.2px;
  margin-bottom: 8px;
}

.sec-sub {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 720px;
  line-height: 1.8;
}

/* 图文分区 */
.split-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(24px, 4vw, 58px);
  align-items: center;
}

.split-copy p {
  font-size: 16px;
  line-height: 2;
  color: rgba(188, 202, 230, 0.82);
  margin-bottom: 18px;
}

.mark-list {
  margin-top: 12px;
  display: grid;
  gap: 11px;
}

.mark-list li {
  position: relative;
  padding-left: 26px;
  color: var(--text-main);
  font-size: 15px;
}

.mark-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(57, 224, 208, 0.6);
}

.split-media img {
  width: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
  aspect-ratio: 5 / 3.4;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}

.img-note {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-mut);
  text-align: center;
}

/* 场景卡 */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.scene-card {
  position: relative;
  padding: 26px 24px 22px;
  background: rgba(13, 23, 42, 0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.scene-card:hover {
  transform: translateY(-3px);
  border-color: rgba(160, 190, 255, 0.42);
  background: rgba(16, 27, 48, 0.82);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.24);
}

.scene-order {
  position: absolute;
  top: 12px;
  right: 18px;
  font-size: 30px;
  font-weight: 800;
  color: rgba(76, 141, 255, 0.2);
  line-height: 1.2;
  letter-spacing: -1px;
}

.scene-card h3 {
  font-size: 18px;
  color: var(--text-strong);
  font-weight: 700;
  margin-bottom: 10px;
}

.scene-card p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(180, 195, 224, 0.78);
  max-width: 56ch;
}

.scene-tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 12px;
  color: rgba(150, 170, 205, 0.75);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(140, 175, 255, 0.13);
  border-radius: 999px;
  padding: 4px 11px;
}

/* 步骤带 */
.steps-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  counter-reset: stepCounter;
}

.step-item {
  position: relative;
  padding: 22px 18px 20px;
  background: rgba(13, 23, 42, 0.58);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  border-top: 2px solid rgba(76, 141, 255, 0.7);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.step-item:hover {
  background: rgba(17, 30, 53, 0.72);
  border-color: rgba(160, 190, 255, 0.36);
  transform: translateY(-2px);
}

.step-no {
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 1px;
  margin-bottom: 12px;
  font-weight: 700;
  display: block;
}

.step-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 13px;
  line-height: 1.8;
  color: rgba(175, 190, 218, 0.76);
}

/* FAQ */
.faq-wrap {
  display: grid;
  gap: 12px;
}

.faq-item {
  background: rgba(13, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.faq-item:hover {
  border-color: rgba(160, 190, 255, 0.3);
}

.faq-item[open] {
  border-color: rgba(120, 170, 255, 0.32);
  background: rgba(16, 27, 49, 0.78);
}

.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 20px 22px;
  font-size: 16px;
  font-weight: 600;
  color: rgba(226, 235, 255, 0.92);
  cursor: pointer;
  list-style: none;
  line-height: 1.6;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  line-height: 1;
  color: var(--text-sub);
  transition: transform 0.2s ease, color 0.2s ease;
  flex: none;
}

.faq-item[open] summary::after {
  content: "−";
  color: var(--cyan);
}

.faq-body {
  padding: 2px 22px 22px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(190, 202, 228, 0.82);
  max-width: 780px;
}

.faq-body p + p {
  margin-top: 8px;
}

/* CTA区域 */
.cta-panel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(76, 141, 255, 0.24);
  padding: clamp(26px, 4vw, 48px) clamp(22px, 4vw, 54px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background:
    radial-gradient(circle at 82% 10%, rgba(57, 224, 208, 0.14), transparent 42%),
    linear-gradient(125deg, rgba(15, 27, 51, 0.92), rgba(7, 13, 27, 0.88));
}

.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center 15%;
  opacity: 0.38;
  z-index: 0;
}

.cta-inner {
  position: relative;
  z-index: 1;
}

.cta-inner h2 {
  font-size: clamp(21px, 3vw, 29px);
  font-weight: 700;
  color: rgba(238, 244, 255, 0.96);
  line-height: 1.45;
  margin-bottom: 10px;
}

.cta-inner p {
  font-size: 15px;
  color: rgba(190, 202, 228, 0.82);
  max-width: 560px;
}

.cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: none;
}

/* 页脚 */
.site-footer {
  border-top: 1px solid rgba(140, 175, 255, 0.11);
  background: linear-gradient(180deg, rgba(4, 8, 16, 0.72), rgba(4, 7, 14, 0.9));
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 38px clamp(18px, 3.4vw, 50px) 16px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 38px;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.footer-brand .sk-logo {
  width: 30px;
  height: 30px;
  margin-top: 2px;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-sub);
  max-width: 480px;
}

.footer-h {
  font-size: 14px;
  font-weight: 700;
  color: rgba(226, 235, 255, 0.92);
  margin-bottom: 14px;
}

.footer-link {
  display: block;
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 0;
  width: fit-content;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--primary);
}

.footer-note {
  border-top: 1px solid rgba(140, 175, 255, 0.09);
  margin-top: 18px;
}

.footer-note-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px clamp(18px, 3.4vw, 50px) 22px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 14px;
  font-size: 12px;
  color: var(--text-mut);
}

.back-top {
  position: fixed;
  right: 26px;
  bottom: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(160, 190, 255, 0.34);
  background: rgba(11, 19, 35, 0.88);
  backdrop-filter: blur(8px);
  color: rgba(220, 232, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 120;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.26s ease, transform 0.26s ease, background 0.2s ease;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.24);
}

.back-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-top:hover {
  background: rgba(20, 32, 58, 0.95);
}

/* 平板 / 移动处理 */
@media (max-width: 1180px) {
  .steps-wrap {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1023px) {
  .sk-sidebar {
    transform: translateX(-100%);
    box-shadow: none;
    width: min(288px, 86vw);
  }

  body.nav-open .sk-sidebar {
    transform: translateX(0);
    box-shadow: 20px 0 60px rgba(0, 0, 0, 0.38);
  }

  .nav-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(3, 6, 12, 0.66);
    backdrop-filter: blur(2px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.26s ease;
    z-index: 210;
  }

  body.nav-open .nav-overlay {
    opacity: 1;
    pointer-events: auto;
  }

  body.nav-open {
    overflow: hidden;
  }

  .sk-main {
    margin-left: 0;
  }

  .sk-mobile-top {
    display: flex;
    position: sticky;
    top: 0;
    z-index: 150;
    height: 62px;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    background: rgba(6, 10, 20, 0.9);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(140, 175, 255, 0.1);
  }

  .sk-mobile-brand {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--text-strong);
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.4px;
  }

  .sk-mobile-brand .sk-logo {
    width: 30px;
    height: 30px;
  }

  .nav-toggle {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(140, 175, 255, 0.16);
    border-radius: var(--radius-sm);
    color: rgba(225, 238, 255, 0.94);
    cursor: pointer;
    transition: background 0.2s ease;
  }

  .nav-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
  }

  .page-container {
    padding-top: 24px;
  }
}

@media (max-width: 767px) {
  .page-container {
    padding: 18px 16px 48px;
  }

  .cat-banner {
    min-height: 208px;
    border-radius: var(--radius-md);
    margin-bottom: 48px;
  }

  .cat-banner-content {
    padding: 22px 20px 28px;
  }

  .split-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .split-media img {
    aspect-ratio: 5 / 3.4;
  }

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

  .steps-wrap {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .step-item {
    padding: 18px 16px;
  }

  .cta-panel {
    flex-direction: column;
    align-items: stretch;
    padding: 26px 20px;
    border-radius: var(--radius-md);
  }

  .cta-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .cta-actions .btn {
    flex: 1;
    white-space: normal;
    height: auto;
    min-height: 44px;
    padding: 10px 14px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 26px;
    padding-top: 28px;
  }

  .footer-brand p {
    max-width: 100%;
  }

  .back-top {
    right: 18px;
    bottom: 20px;
  }
}

@media (max-width: 575px) {
  .sk-mobile-top {
    padding: 0 14px;
  }

  .cat-kicker {
    font-size: 12px;
  }

  .crumb {
    font-size: 12px;
  }

  .scene-card {
    padding: 20px 18px;
  }

  .cta-actions .btn {
    width: 100%;
  }
}

@media (min-width: 1024px) {
  .sk-sidebar {
    transform: none !important;
  }

  body.nav-open {
    overflow: auto;
  }
}

/* roulang page: article */
:root{
  --bg:#060A14;
  --panel:#0A1120;
  --card:rgba(12,19,34,.72);
  --card-soft:rgba(14,22,40,.52);
  --stroke:rgba(140,175,255,.14);
  --stroke-strong:rgba(140,175,255,.28);
  --text:rgba(230,238,255,.94);
  --text-2:rgba(162,178,210,.72);
  --muted:rgba(120,140,175,.52);
  --primary:#3579FF;
  --primary-strong:#4C8DFF;
  --cyan:#39E0D0;
  --gold:#F0B36A;
  --danger:#FF7373;
  --success:#64E6BA;
  --radius-btn:10px;
  --radius-card:16px;
  --radius-panel:22px;
  --shadow:0 8px 28px rgba(0,0,0,.22);
  --font-sans:-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  min-height:100vh;
  background:
    radial-gradient(circle at 15% 0%, rgba(53,121,255,.18), transparent 34%),
    radial-gradient(circle at 88% 18%, rgba(57,224,208,.08), transparent 28%),
    var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(rgba(255,255,255,.045) 1px, transparent 1.5px),
    radial-gradient(rgba(128,170,255,.12) 1px, transparent 1.6px);
  background-size:220px 220px,170px 170px;
  background-position:0 0,42px 36px;
  opacity:.62;
}

img{
  max-width:100%;
  height:auto;
  border:0;
  display:block;
}

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

ul,ol{
  margin:0;
  padding-left:1.25em;
}

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

p{
  margin:0;
}

h1,h2,h3,h4{
  margin:0;
  color:#fff;
  line-height:1.3;
  letter-spacing:-.01em;
}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}

::selection{
  background:rgba(57,224,208,.24);
  color:#fff;
}

.site-shell{
  position:relative;
  z-index:1;
  display:flex;
  min-height:100vh;
  width:100%;
}

.site-aside{
  width:240px;
  flex:0 0 240px;
  position:fixed;
  inset:0 auto 0 0;
  z-index:60;
  display:flex;
  flex-direction:column;
  height:100vh;
  background:linear-gradient(170deg, rgba(9,14,27,.96), rgba(5,8,17,.94));
  border-right:1px solid var(--stroke);
  padding:20px 16px;
}

.aside-inner{
  display:flex;
  flex-direction:column;
  height:100%;
  min-width:0;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:4px 8px 24px;
  border-bottom:1px solid rgba(140,175,255,.1);
  margin-bottom:14px;
}

.brand-mark{
  width:42px;
  height:42px;
  flex:0 0 auto;
}

.brand-name{
  font-size:17px;
  font-weight:700;
  color:#fff;
  letter-spacing:-.01em;
  line-height:1.35;
  white-space:nowrap;
}

.brand-sub{
  display:block;
  font-size:12px;
  font-weight:400;
  color:var(--muted);
  margin-top:2px;
  white-space:nowrap;
}

.sk-nav{
  display:grid;
  gap:4px;
}

.sk-nav-label{
  padding:8px 12px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
  text-transform:uppercase;
}

.sk-nav-item{
  display:flex;
  align-items:center;
  gap:11px;
  min-height:46px;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid transparent;
  color:var(--text-2);
  font-size:15px;
  line-height:1.4;
  transition:background .22s ease,border-color .22s ease,color .22s ease;
}

.sk-nav-item .nav-ico{
  width:18px;
  height:18px;
  flex:0 0 auto;
}

.sk-nav-item:hover{
  color:#fff;
  background:rgba(255,255,255,.045);
  border-color:rgba(140,175,255,.08);
}

.sk-nav-item.is-active{
  color:#fff;
  background:linear-gradient(90deg, rgba(53,121,255,.22), rgba(53,121,255,.06));
  border-color:rgba(76,141,255,.22);
  box-shadow:inset 3px 0 0 var(--primary);
}

.side-note{
  margin-top:auto;
  padding:16px;
  border:1px solid var(--stroke);
  border-radius:18px;
  background:rgba(53,121,255,.08);
}

.side-note-title{
  font-size:14px;
  font-weight:600;
  color:#fff;
}

.side-note p{
  font-size:13px;
  line-height:1.7;
  color:var(--text-2);
  margin:9px 0 16px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease,color .2s ease;
  text-align:center;
  white-space:nowrap;
}

.btn-primary{
  background:var(--primary);
  border-color:rgba(76,141,255,.3);
  color:#fff;
  box-shadow:0 4px 16px rgba(53,121,255,.18);
}

.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 8px 26px rgba(53,121,255,.32);
  background:var(--primary-strong);
}

.btn-primary:active{
  transform:translateY(1px);
}

.btn-secondary{
  background:rgba(12,20,36,.66);
  border-color:var(--stroke-strong);
  color:var(--text);
}

.btn-secondary:hover{
  color:#fff;
  border-color:rgba(140,175,255,.52);
  background:rgba(53,121,255,.14);
  transform:translateY(-1px);
}

.btn-block{
  width:100%;
}

.main-panel{
  flex:1;
  min-width:0;
  margin-left:240px;
}

.mobile-topbar{
  display:none;
}

.article-hero{
  position:relative;
  padding:62px 0 54px;
  background-image:linear-gradient(135deg, rgba(4,8,17,.92), rgba(8,13,25,.72)), url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--stroke);
}

.article-hero-inner{
  width:min(1180px, 100% - 96px);
  margin:0 auto;
}

.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--muted);
  gap:7px;
  margin-bottom:26px;
}

.crumbs a{
  transition:color .2s ease;
}

.crumbs a:hover{
  color:var(--cyan);
}

.crumbs .crumb-sep{
  color:rgba(120,140,175,.38);
}

.crumbs .crumb-current{
  color:var(--text-2);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  max-width:310px;
}

.article-category{
  display:inline-flex;
  align-items:center;
  width:auto;
  min-height:26px;
  padding:0 12px;
  border:1px solid rgba(57,224,208,.28);
  background:rgba(57,224,208,.1);
  color:var(--cyan);
  border-radius:999px;
  font-size:13px;
  margin-bottom:18px;
}

.article-h1{
  font-size:clamp(28px, 4.6vw, 48px);
  line-height:1.22;
  font-weight:800;
  max-width:960px;
  letter-spacing:-.02em;
}

.article-meta-line{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:18px;
  margin-top:22px;
  color:var(--text-2);
  font-size:14px;
}

.article-meta-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
}

.article-main{
  width:min(1180px, 100% - 96px);
  margin:0 auto;
  padding-top:42px;
  padding-bottom:26px;
}

.article-card{
  max-width:820px;
  margin:0 auto;
  background:var(--card);
  border:1px solid var(--stroke);
  border-radius:var(--radius-panel);
  box-shadow:var(--shadow);
  padding:30px 36px 38px;
}

.article-body{
  color:var(--text);
  font-size:16.5px;
  line-height:2;
}

.article-body p{
  margin:0 0 1.5em;
}

.article-body h2{
  font-size:24px;
  margin:2em 0 .8em;
  padding-bottom:.32em;
  border-bottom:1px solid var(--stroke);
}

.article-body h3{
  font-size:19px;
  margin:1.7em 0 .6em;
}

.article-body ul,
.article-body ol{
  margin:0 0 1.6em;
}

.article-body li{
  margin:.32em 0;
}

.article-body blockquote{
  margin:1.6em 0;
  padding:.65em 1.2em .65em 1.3em;
  border-left:3px solid var(--primary);
  background:rgba(76,141,255,.08);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
}

.article-body code,
.article-body kbd{
  font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;
  font-size:.92em;
  background:rgba(255,255,255,.06);
  padding:.2em .45em;
  border-radius:6px;
  border:1px solid rgba(140,175,255,.08);
}

.article-body pre{
  margin:1.6em 0;
  padding:1.1em 1.2em;
  overflow:auto;
  background:rgba(3,8,17,.78);
  border:1px solid var(--stroke);
  border-radius:14px;
  color:rgba(230,238,255,.92);
  font-size:14px;
  line-height:1.7;
}

.article-body pre code{
  background:transparent;
  border:none;
  padding:0;
}

.article-body img{
  border-radius:16px;
  margin-top:.4em;
}

.article-body figcaption,
.article-cover-caption{
  font-size:13px;
  color:var(--muted);
  text-align:center;
  margin:10px 0 1.6em;
}

.article-inline-cta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  margin:38px 0 8px;
  padding:22px 24px;
  border-radius:18px;
  background:rgba(53,121,255,.1);
  border:1px solid rgba(76,141,255,.2);
}

.article-inline-cta-copy strong{
  display:block;
  color:#fff;
  font-size:16px;
  margin-bottom:4px;
}

.article-inline-cta-copy span{
  color:var(--text-2);
  font-size:14px;
}

.article-empty-card{
  max-width:820px;
  margin:42px auto;
  padding:86px 34px;
  border:1px dashed var(--stroke-strong);
  border-radius:24px;
  background:rgba(8,13,25,.6);
  text-align:center;
}

.article-empty-card .empty-ico{
  width:52px;
  height:52px;
  margin:0 auto 20px;
  color:var(--muted);
}

.article-empty-card h1{
  font-size:26px;
  margin-bottom:10px;
}

.article-empty-card p{
  color:var(--text-2);
  font-size:15px;
  max-width:420px;
  margin:0 auto 24px;
}

.article-pager{
  max-width:820px;
  margin:30px auto 0;
}

.pager-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:16px;
}

.pager-cell{
  display:block;
  padding:18px 22px;
  border:1px solid var(--stroke);
  border-radius:16px;
  background:rgba(10,16,29,.58);
  color:var(--text-2);
  font-size:14px;
  min-height:76px;
}

.pager-cell.is-empty{
  opacity:.72;
  cursor:default;
  border-style:dashed;
}

.pager-direction{
  display:block;
  font-size:12px;
  color:var(--muted);
  margin-bottom:6px;
  letter-spacing:.04em;
}

.related-section{
  padding:62px 48px 10px;
}

.related-wrapper{
  width:min(1180px, 100%);
  margin:0 auto;
}

.section-title{
  font-size:clamp(23px,3vw,30px);
  font-weight:700;
  margin-bottom:8px;
}

.section-lead{
  font-size:15px;
  color:var(--text-2);
  max-width:760px;
}

.related-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:20px;
  margin-top:28px;
}

.related-card{
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:22px;
  border:1px solid var(--stroke);
  border-radius:18px;
  background:rgba(12,19,34,.68);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}

.related-card:hover{
  transform:translateY(-3px);
  border-color:rgba(76,141,255,.34);
  box-shadow:0 12px 30px rgba(0,0,0,.26);
}

.related-card .tag{
  display:inline-flex;
  width:max-content;
  min-height:24px;
  align-items:center;
  padding:0 11px;
  border-radius:999px;
  background:rgba(57,224,208,.08);
  border:1px solid rgba(57,224,208,.2);
  color:var(--cyan);
  font-size:12px;
}

.related-card h3{
  font-size:17px;
  line-height:1.5;
}

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

.section-faq{
  padding:64px 48px 30px;
}

.faq-wrapper{
  width:min(880px,100%);
  margin:0 auto;
}

.faq-list{
  display:grid;
  gap:13px;
  margin-top:28px;
}

.faq-item{
  border:1px solid var(--stroke);
  background:var(--card);
  border-radius:16px;
  overflow:hidden;
  transition:border-color .2s ease;
}

.faq-item[open]{
  border-color:rgba(57,224,208,.3);
}

.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:18px 22px;
  font-size:16px;
  font-weight:600;
  color:#fff;
}

.faq-item summary::-webkit-details-marker{
  display:none;
}

.faq-item summary::after{
  content:"+";
  font-size:22px;
  font-weight:400;
  color:var(--muted);
  transition:transform .25s ease,color .2s ease;
  line-height:1;
}

.faq-item[open] summary::after{
  transform:rotate(45deg);
  color:var(--cyan);
}

.faq-answer{
  padding:2px 23px 20px;
  font-size:15px;
  color:var(--text-2);
  border-top:1px solid rgba(140,175,255,.08);
}

.faq-answer p{
  margin:.8em 0 0;
}

.article-cta-band{
  width:min(1180px,100%);
  margin:54px auto 0;
}

.cta-panel{
  display:grid;
  grid-template-columns:1.4fr auto;
  align-items:center;
  gap:26px;
  padding:30px 34px;
  border-radius:22px;
  background:linear-gradient(135deg, rgba(53,121,255,.2), rgba(57,224,208,.08));
  border:1px solid rgba(76,141,255,.22);
  box-shadow:0 10px 30px rgba(0,0,0,.2);
}

.cta-panel h2{
  font-size:22px;
  margin-bottom:6px;
}

.cta-panel p{
  color:var(--text-2);
  font-size:15px;
  max-width:620px;
}

.cta-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  justify-content:center;
}

.site-footer{
  margin-top:72px;
  border-top:1px solid var(--stroke);
  background:rgba(5,9,18,.72);
}

.footer-inner{
  width:min(1180px,100% - 96px);
  margin:0 auto;
  display:grid;
  grid-template-columns:1.8fr 1fr 1fr;
  gap:44px;
  padding:46px 0 34px;
}

.footer-brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:18px;
}

.sk-logo{
  width:38px;
  height:38px;
}

.footer-brand p{
  margin:0;
  font-size:14px;
  line-height:1.95;
  color:var(--text-2);
  max-width:460px;
}

.footer-h{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:14px;
}

.footer-link{
  display:block;
  padding:5px 0;
  color:var(--text-2);
  font-size:14px;
  transition:color .2s ease,transform .2s ease;
}

.footer-link:hover{
  color:var(--cyan);
  transform:translateX(3px);
}

.footer-note{
  border-top:1px solid rgba(140,175,255,.08);
}

.footer-note-inner{
  width:min(1180px,100% - 96px);
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  padding:15px 0;
  font-size:12px;
  color:var(--muted);
}

@media screen and (max-width: 1179px){
  .article-hero-inner,
  .article-main,
  .related-wrapper,
  .footer-inner,
  .footer-note-inner{
    width:calc(100% - 64px);
  }

  .related-grid{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }

  .related-card:last-child{
    grid-column:1 / -1;
  }
}

@media screen and (max-width: 1023px){
  .site-aside{
    display:none;
  }

  .main-panel{
    margin-left:0;
  }

  .mobile-topbar{
    display:flex;
    align-items:center;
    gap:12px;
    position:sticky;
    top:0;
    z-index:100;
    height:64px;
    padding:0 16px;
    background:rgba(6,10,20,.88);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--stroke);
  }

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

  .mobile-brand .brand-mark{
    width:34px;
    height:34px;
  }

  .mobile-brand-name{
    font-size:15px;
    font-weight:700;
    color:#fff;
    white-space:nowrap;
  }

  .mobile-brand-sub{
    display:block;
    font-size:11px;
    color:var(--muted);
    margin-top:1px;
  }

  .menu-input{
    position:absolute;
    left:-40px;
    opacity:0;
    pointer-events:none;
  }

  .menu-toggle{
    margin-left:auto;
    width:46px;
    height:46px;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:5px;
    border:1px solid var(--stroke);
    border-radius:12px;
    background:rgba(12,20,36,.24);
    cursor:pointer;
  }

  .menu-toggle span{
    width:18px;
    height:2px;
    background:#c6d6f2;
    border-radius:3px;
    display:block;
    transition:transform .25s ease,opacity .2s ease;
  }

  .menu-input:checked + .menu-toggle .bar-1{
    transform:translateY(7px) rotate(45deg);
  }

  .menu-input:checked + .menu-toggle .bar-2{
    opacity:0;
  }

  .menu-input:checked + .menu-toggle .bar-3{
    transform:translateY(-7px) rotate(-45deg);
  }

  .mobile-drawer{
    position:absolute;
    top:64px;
    left:0;
    right:0;
    z-index:110;
    padding:14px 16px 22px;
    background:rgba(5,9,18,.97);
    border-bottom:1px solid var(--stroke);
    box-shadow:0 24px 44px rgba(0,0,0,.4);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  }

  .menu-input:checked ~ .mobile-drawer{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }

  .mobile-drawer .sk-nav{
    padding-bottom:12px;
  }

  .mobile-drawer .side-note{
    margin-top:8px;
  }
}

@media screen and (max-width: 767px){
  .article-hero{
    padding:40px 0 38px;
  }

  .article-hero-inner,
  .article-main,
  .related-wrapper,
  .footer-inner,
  .footer-note-inner{
    width:calc(100% - 40px);
  }

  .article-h1{
    font-size:29px;
  }

  .article-main{
    padding-top:26px;
  }

  .article-card{
    padding:24px 20px 28px;
  }

  .article-body{
    font-size:16px;
  }

  .article-body h2{
    font-size:21px;
  }

  .article-body h3{
    font-size:18px;
  }

  .article-meta-line{
    gap:10px 16px;
  }

  .article-inline-cta{
    flex-direction:column;
    align-items:flex-start;
  }

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

  .related-section{
    padding:52px 20px 4px;
  }

  .section-faq{
    padding:54px 20px 20px;
  }

  .cta-panel{
    grid-template-columns:1fr;
    padding:26px 22px;
  }

  .footer-inner{
    grid-template-columns:1fr;
    gap:32px;
    padding-top:38px;
  }

  .footer-note-inner{
    flex-direction:column;
    align-items:flex-start;
    gap:5px;
  }
}

@media screen and (max-width: 575px){
  .article-hero-inner,
  .article-main,
  .related-wrapper,
  .footer-inner,
  .footer-note-inner{
    width:calc(100% - 32px);
  }

  .crumbs{
    font-size:12px;
  }

  .article-category{
    margin-bottom:14px;
  }

  .article-h1{
    font-size:27px;
  }

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

  .related-card:last-child{
    grid-column:auto;
  }

  .cta-actions{
    width:100%;
  }

  .cta-actions .btn{
    flex:1 1 auto;
  }
}

/* roulang page: category2 */
:root {
  --bg: #081020;
  --bg-deep: #050a14;
  --bg-card: rgba(255, 255, 255, 0.045);
  --bg-card-hover: rgba(76, 141, 255, 0.09);
  --bg-panel: rgba(10, 20, 40, 0.82);
  --bg-input: rgba(255, 255, 255, 0.06);
  --border: rgba(140, 175, 255, 0.14);
  --border-soft: rgba(140, 175, 255, 0.1);
  --primary: #4b89ff;
  --primary-strong: #5c96ff;
  --primary-soft: rgba(76, 141, 255, 0.18);
  --cyan: #3fd7cc;
  --cyan-soft: rgba(63, 215, 204, 0.14);
  --gold: #f0b36a;
  --gold-soft: rgba(240, 179, 106, 0.14);
  --red: #e76e78;
  --red-soft: rgba(231, 110, 120, 0.12);
  --text: rgba(232, 240, 255, 0.95);
  --text-secondary: rgba(162, 178, 210, 0.75);
  --text-muted: rgba(120, 140, 175, 0.55);
  --white: #fff;
  --radius-btn: 10px;
  --radius-card: 16px;
  --radius-panel: 20px;
  --radius-tag: 999px;
  --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(140, 175, 255, 0.05);
  --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.38), 0 0 0 1px rgba(76, 141, 255, 0.22);
  --shadow-cta: 0 10px 30px rgba(76, 141, 255, 0.28);
  --font-stack: -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --header-h: 72px;
  --sidebar-w: 246px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 42% at 12% 4%, rgba(56, 92, 220, 0.2), transparent 68%),
    radial-gradient(ellipse 50% 40% at 88% 16%, rgba(63, 215, 204, 0.08), transparent 70%),
    radial-gradient(ellipse 46% 48% at 82% 88%, rgba(49, 84, 197, 0.12), transparent 74%),
    radial-gradient(ellipse 36% 38% at 20% 92%, rgba(240, 179, 106, 0.05), transparent 62%);
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

button,
input {
  font-family: var(--font-stack);
  font-size: 15px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid rgba(63, 215, 204, 0.75);
  outline-offset: 3px;
  border-radius: 6px;
}

::-webkit-scrollbar {
  width: 9px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(140, 175, 255, 0.28);
  border-radius: 20px;
}

/* ===== 布局骨架 ===== */
.site-shell {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.site-main-area {
  flex: 1;
  min-width: 0;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.content-wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.2s ease, color 0.2s ease;
  font-size: 15px;
  line-height: 1;
  height: 46px;
  padding: 0 22px;
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 18px rgba(75, 137, 255, 0.12);
}

.btn-primary:hover {
  background: var(--primary-strong);
  color: #fff;
  box-shadow: 0 8px 28px rgba(75, 137, 255, 0.28);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 3px 12px rgba(75, 137, 255, 0.2);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-secondary);
}

.btn-ghost:hover {
  border-color: rgba(76, 141, 255, 0.7);
  background: var(--bg-card-hover);
  color: var(--text);
  box-shadow: 0 4px 18px rgba(76, 141, 255, 0.12);
}

.btn-line {
  height: 40px;
  padding: 0 18px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-line:hover {
  border-color: var(--primary);
  color: var(--text);
}

/* ===== 左侧导航 ===== */
.sk-sidebar {
  width: var(--sidebar-w);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  background: rgba(5, 10, 24, 0.9);
  backdrop-filter: blur(17px);
  -webkit-backdrop-filter: blur(17px);
  border-right: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  z-index: 50;
}

.sk-sidebar::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 68% 26% at 22% 6%, rgba(76, 141, 255, 0.1), transparent 70%),
    radial-gradient(ellipse 50% 50% at 80% 87%, rgba(63, 215, 204, 0.06), transparent 56%);
  pointer-events: none;
  z-index: 0;
}

.sk-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 25px 14px 20px;
  border-bottom: 1px solid rgba(140, 175, 255, 0.07);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.sk-brand .sk-logo {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.sk-brand-name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--text);
  line-height: 1.4;
}

.sk-brand-name small {
  display: block;
  font-size: 10px;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.16em;
  margin-top: 1px;
}

.sk-nav {
  padding: 18px 14px;
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.sk-nav-label {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 10px;
  padding: 0 10px;
}

.sk-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  padding: 0 12px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 3px;
  position: relative;
  transition: all 0.22s ease;
}

.sk-nav-item .nav-ico {
  width: 19px;
  height: 19px;
  flex-shrink: 0;
  opacity: 0.78;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.sk-nav-item:hover {
  background: rgba(76, 141, 255, 0.08);
  color: var(--text);
}

.sk-nav-item.is-active {
  background: linear-gradient(90deg, rgba(76, 141, 255, 0.16), rgba(76, 141, 255, 0.05));
  color: #fff;
  font-weight: 600;
}

.sk-nav-item.is-active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 21px;
  width: 3px;
  border-radius: 0 4px 4px 0;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(76, 141, 255, 0.7);
}

.sk-nav-item.is-active .nav-ico {
  color: var(--primary-strong);
  opacity: 1;
}

.sk-status-box {
  margin: 8px 14px 16px;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid rgba(63, 215, 204, 0.18);
  background: linear-gradient(145deg, rgba(63, 215, 204, 0.06), rgba(76, 141, 255, 0.05));
  position: relative;
  z-index: 1;
}

.sk-status-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(197, 235, 230, 0.92);
  margin-bottom: 5px;
}

.sk-status-title .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 9px rgba(63, 215, 204, 0.9);
}

.sk-status-desc {
  font-size: 12px;
  color: rgba(140, 175, 210, 0.62);
  line-height: 1.6;
}

.sk-copyright {
  padding: 15px 18px;
  font-size: 11px;
  color: rgba(120, 140, 175, 0.4);
  border-top: 1px solid rgba(140, 175, 255, 0.06);
  position: relative;
  z-index: 1;
}

.sk-copy-line {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sk-backtop {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(16, 27, 51, 0.82);
  border: 1px solid rgba(140, 175, 255, 0.22);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--text-secondary);
  font-size: 19px;
  cursor: pointer;
  z-index: 80;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  transition: border-color 0.2s ease, color 0.2s ease, opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.sk-backtop:hover {
  border-color: rgba(63, 215, 204, 0.6);
  color: var(--cyan);
}

.sk-backtop.is-hidden {
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  pointer-events: none;
}

/* ===== 移动端导航 ===== */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  height: var(--header-h);
  background: rgba(5, 10, 24, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-soft);
  z-index: 66;
  padding: 0 20px;
}

.mobile-header-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.mobile-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  flex-shrink: 1;
}

.mobile-brand .sk-logo {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.mobile-brand-name {
  font-size: 16px;
  font-weight: 800;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.m-burger {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(140, 175, 255, 0.16);
  border-radius: 10px;
  cursor: pointer;
  color: var(--text);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.m-burger:hover {
  border-color: rgba(140, 175, 255, 0.5);
}

.mobile-nav-panel {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: rgba(5, 10, 24, 0.97);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-bottom: 1px solid var(--border-soft);
  z-index: 65;
  padding: 18px 20px 24px;
  display: none;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
}

.mobile-nav-panel.is-open {
  display: block;
}

.mobile-nav-panel .sk-nav {
  padding: 0;
  display: block;
}

.mobile-nav-panel .sk-nav-label {
  margin-bottom: 8px;
}

.mobile-nav-panel .sk-nav-item {
  height: 48px;
  border-radius: 12px;
}

.mobile-nav-panel .sk-status-box {
  margin: 14px 0 0;
}

.no-scroll {
  overflow: hidden;
}

/* ===== Banner ===== */
.cat-banner {
  position: relative;
  padding: 74px 0 50px;
  border-bottom: 1px solid rgba(140, 175, 255, 0.08);
}

.cat-banner-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(5, 10, 24, 0.36), rgba(7, 14, 32, 0.82)),
    url('/assets/images/backpic/back-2.webp') no-repeat center / cover;
  z-index: 0;
  transform: scale(1.01);
}

.cat-banner-bg::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(6, 10, 24, 0.62) 0%, rgba(6, 10, 24, 0.36) 56%, rgba(6, 10, 24, 0.7) 100%);
}

.cat-banner .content-wrap {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 18px;
  background: rgba(6, 13, 28, 0.5);
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(140, 175, 255, 0.1);
}

.crumb-link {
  color: var(--text-muted);
}

.crumb-link:hover {
  color: var(--cyan);
}

.crumb-current {
  color: rgba(200, 214, 238, 0.85);
}

.cat-h1 {
  font-size: clamp(32px, 4.4vw, 52px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 16px;
}

.cat-desc {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.9;
  color: var(--text);
  max-width: 700px;
  margin-bottom: 26px;
}

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

.safety-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.safety-chip {
  align-items: center;
  display: inline-flex;
  gap: 7px;
  font-size: 13px;
  color: var(--text-secondary);
  background: rgba(140, 175, 210, 0.08);
  border: 1px solid rgba(140, 175, 255, 0.12);
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

.safety-chip svg {
  width: 14px;
  height: 14px;
  color: var(--cyan);
}

.safety-chip.gold svg {
  color: var(--gold);
}

/* ===== 板块间距 ===== */
.section-space {
  padding: 68px 0;
}

.section-space-sm {
  padding: 46px 0;
}

.section-title-lg {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 8px;
}

.section-lead {
  max-width: 640px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
}

.nav-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 38px;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-soft);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  border-color: rgba(76, 141, 255, 0.5);
  color: var(--text);
}

.tab-btn.is-active {
  border-color: rgba(63, 215, 204, 0.44);
  background: var(--cyan-soft);
  color: #a7f0ea;
  font-weight: 600;
}

/* ===== 威胁概况/数据 ===== */
.threats-bg {
  background: rgba(255, 255, 255, 0.022);
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.metric-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(76, 141, 255, 0.36);
  box-shadow: var(--shadow-hover);
}

.metric-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}

.metric-num small {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: 2px;
}

.metric-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 600;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.metric-label svg {
  width: 16px;
  height: 16px;
  margin-right: 3px;
  color: var(--primary);
}

.metric-more {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.55;
  margin-top: 8px;
}

/* ===== 风险提示卡 ===== */
.risk-bg {
  background: rgba(5, 10, 24, 0.34);
}

.risk-card {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.risk-card:hover {
  border-color: rgba(76, 141, 255, 0.3);
  box-shadow: var(--shadow-hover);
}

.risk-icon {
  flex: 0 0 auto;
  width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--border-soft);
  background: rgba(76, 141, 255, 0.05);
}

.risk-icon svg {
  width: 22px;
  height: 22px;
}

.risk-icon .c-yellow { color: var(--gold); }
.risk-icon .c-red { color: var(--red); }
.risk-icon .c-purple { color: #a58bf8; }
.risk-icon .c-blue { color: var(--primary); }

.risk-body {
  padding: 18px 20px;
}

.risk-tag {
  display: inline-block;
  font-size: 11px;
  color: var(--text-muted);
  border: 1px solid var(--border-soft);
  padding: 1px 8px;
  border-radius: 999px;
  margin-bottom: 6px;
  letter-spacing: 0.06em;
}

.risk-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.risk-text {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin-top: 4px;
  line-height: 1.7;
  max-width: 460px;
}

/* ===== 防御措施 ===== */
.defend-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.defend-item {
  grid-column: span 4;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 24px 22px;
  transition: all 0.25s ease;
  position: relative;
}

.defend-item:hover {
  border-color: rgba(76, 141, 255, 0.4);
  box-shadow: var(--shadow-hover);
}

.d-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--cyan-soft);
  border: 1px solid rgba(63, 215, 204, 0.16);
  margin-bottom: 14px;
}

.d-icon.blue {
  background: var(--primary-soft);
  border-color: var(--primary-soft);
}

.d-icon.gold {
  background: var(--gold-soft);
  border-color: var(--gold-soft);
}

.d-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan);
  display: block;
  letter-spacing: 0.2em;
  margin-bottom: 5px;
}

.d-icon.blue + .d-num { color: var(--primary); }
.d-icon.gold + .d-num { color: var(--gold); }

.defend-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 9px;
}

.defend-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.defend-list {
  list-style: none;
  margin-top: 12px;
  padding: 0;
}

.defend-list li {
  font-size: 13px;
  color: var(--text-secondary);
  padding-left: 18px;
  position: relative;
  line-height: 2;
}

.defend-list li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--cyan);
  border-radius: 50%;
  position: absolute;
  left: 2px;
  top: 13px;
}

/* ===== 流程 ===== */
.flow-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 30px 0 0;
}

.flow-node {
  position: relative;
}

.flow-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 22px;
  min-height: 155px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.flow-card:hover {
  border-color: rgba(76, 141, 255, 0.38);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.flow-step {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(76, 141, 255, 0.08);
  border: 1px solid rgba(76, 141, 255, 0.22);
  border-radius: 16px;
  padding: 4px 12px;
  letter-spacing: 0.04em;
}

.flow-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
  margin-top: 11px;
  margin-bottom: 7px;
}

.flow-card p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.flow-arrow {
  position: absolute;
  top: 50%;
  right: -20px;
  width: 20px;
  height: 20px;
  z-index: 2;
}

.flow-arrow::before {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-top: 2px solid rgba(140, 175, 255, 0.5);
  border-right: 2px solid rgba(140, 175, 255, 0.5);
  transform: rotate(45deg);
  left: 6px;
  top: 6px;
}

.flow-arrow svg {
  display: none;
}

ul {
  padding-left: 0;
}

/* ===== 内容卡片网格 ===== */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 22px 24px;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  display: block;
}

.info-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(76, 141, 255, 0.4);
  box-shadow: var(--shadow-hover);
}

.info-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.info-icon svg {
  width: 20px;
  height: 20px;
}

.info-icon.has-blue { background: var(--primary-soft); }
.info-icon.has-blue svg { color: var(--primary); }
.info-icon.has-cyan { background: var(--cyan-soft); }
.info-icon.has-cyan svg { color: var(--cyan); }
.info-icon.has-gold { background: var(--gold-soft); }
.info-icon.has-gold svg { color: var(--gold); }

.info-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.info-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== CTA 区块 ===== */
.cta-section {
  padding: 66px 0;
  position: relative;
}

.cta-section-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 76% 80% at 68% 20%, rgba(63, 215, 204, 0.08), transparent 70%),
    radial-gradient(ellipse 60% 70% at 16% 82%, rgba(76, 141, 255, 0.12), transparent 62%),
    linear-gradient(135deg, rgba(7, 11, 26, 0.4), rgba(9, 15, 32, 0.3));
  border-top: 1px solid rgba(140, 175, 255, 0.06);
  border-bottom: 1px solid rgba(140, 175, 255, 0.06);
}

.cta-box {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 12px 0;
}

.cta-kicker {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--primary-strong);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.cta-title {
  max-width: 740px;
  margin: 0 auto;
  font-size: clamp(25px, 4vw, 36px);
  line-height: 1.4;
  font-weight: 700;
  color: var(--white);
}

.cta-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 14px auto 0;
}

.cta-btn {
  margin-top: 32px;
}

/* ===== 通用 ===== */
.divider-light {
  height: 1px;
  border: 0;
  max-width: 100%;
  background: linear-gradient(90deg, transparent, rgba(140, 175, 255, 0.15), transparent);
}

.section-anchor:target {
  scroll-margin-top: 96px;
}

/* ===== FAQ 面板 ===== */
.faq-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color 0.25s ease, background 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(140, 175, 255, 0.3);
}

.faq-item details {
  position: relative;
}

.faq-item summary {
  padding: 19px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  line-height: 1.6;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: background 0.25s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "";
  margin-left: auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  transition: transform 0.3s ease, border-color 0.2s ease;
  flex-shrink: 0;
  position: relative;
  top: -3px;
}

.faq-item details[open] summary::after {
  transform: rotate(-135deg);
  top: 3px;
  border-color: var(--cyan);
}

.faq-ans {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 14.5px;
  line-height: 1.9;
  background: transparent;
}

.faq-ans p + p {
  margin-top: 8px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: rgba(4, 7, 16, 0.64);
  border-top: 1px solid rgba(140, 175, 255, 0.08);
  padding: 52px 0 0;
  position: relative;
  z-index: 2;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  max-width: 1130px;
  margin: 0 auto;
  padding: 0 32px 42px;
}

.footer-brand .sk-logo {
  width: 30px;
  height: 30px;
  margin-bottom: 10px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.85;
  max-width: 280px;
}

.footer-brand {
  padding-right: 10px;
}

.footer-brand-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  display: block;
  align-items: center;
  display: flex;
  gap: 9px;
}

.footer-brand-name .sk-logo {
  width: 24px;
  height: 24px;
  margin-bottom: 0;
}

.footer-h {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 15px;
  letter-spacing: 0.02em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-items: flex-start;
}

.footer-link {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 2;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-link:hover {
  color: var(--primary-strong);
  padding-left: 3px;
}

.footer-note {
  background: rgba(0, 0, 0, 0.24);
}

.footer-note-inner {
  max-width: 1130px;
  margin: 0 auto;
  padding: 20px 32px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 通用响应式 ===== */
@media screen and (max-width: 1023px) {
  .sk-sidebar {
    display: none;
  }
  .mobile-header {
    display: block;
  }
  .site-main-area {
    margin-left: 0;
    width: 100%;
  }
  .content-wrap {
    padding: 0 22px;
  }
  .site-main-area .content-wrap {
    max-width: 100%;
  }
  .mobile-nav-panel {
    display: none;
  }
  .mobile-nav-panel.is-open {
    display: block;
  }
  .cat-banner {
    padding-top: 48px;
  }
  .metric-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .flow-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  .flow-arrow {
    display: none;
  }
  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: span 2;
  }
  .section-space {
    padding: 56px 0;
  }
  .cat-banner {
    padding-bottom: 42px;
  }
}

@media screen and (min-width: 1024px) {
  .mobile-header {
    display: none !important;
  }
  .site-main-area {
    margin-left: var(--sidebar-w);
  }
  .content-wrap {
    padding: 0 38px;
  }
}

@media screen and (max-width: 767px) {
  .content-wrap {
    padding: 0 16px;
  }
  .section-space {
    padding: 46px 0;
  }
  .cat-h1 {
    font-size: 30px;
    line-height: 1.25;
  }
  .cat-banner {
    padding: 34px 0 32px;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .section-lead {
    font-size: 14px;
  }
  .btn {
    height: 42px;
    padding: 0 18px;
    font-size: 14px;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 20px 20px 32px;
  }
  .footer-brand {
    grid-column: span 1;
  }
  .footer-note-inner {
    padding: 18px 20px;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    text-align: center;
  }
}

@media screen and (max-width: 575px) {
  .metric-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .flow-timeline {
    grid-template-columns: 1fr;
  }
  .info-grid {
    grid-template-columns: 1fr;
  }
  .defend-item {
    grid-column: span 12;
  }
  .cat-actions .btn {
    width: 100%;
  }
  .cat-desc {
    font-size: 14.5px;
    line-height: 1.8;
  }
  .mobile-header {
    padding: 0 14px;
  }
  .mobile-nav-panel {
    padding: 16px 16px 22px;
  }
  .sk-status-box {
    margin-left: 0;
    margin-right: 0;
  }
  .risk-card {
    flex-direction: column;
  }
  .risk-icon {
    width: auto;
    height: 38px;
    border-right: none;
    border-bottom: 1px solid var(--border-soft);
  }
  .tab-btn {
    padding: 0 13px;
    font-size: 12.5px;
    height: 34px;
  }
}