/* roulang page: index */
:root{
  --bg-base:#0A0E12;
  --bg-surface:#121821;
  --bg-elevated:#1A2230;
  --bg-light:#F5F8F7;
  --primary:#1FE0A4;
  --primary-deep:#12B183;
  --secondary:#7A5CFF;
  --accent:#FFB020;
  --text-1:#EAF2F0;
  --text-2:#9BAAB8;
  --text-3:#6B7A8A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,224,164,.35);
  --ink:#0E1418;
  --ink-2:#4A5A60;
  --light-line:#E3EAE8;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 10px 28px rgba(0,0,0,.45);
  --shadow-light:0 6px 20px rgba(14,20,24,.08);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:Inter,"DIN Alternate",ui-monospace,sans-serif;
  --container:1240px;
  --header-h:60px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
input,textarea,select{font-family:inherit;font-size:15px;}
::selection{background:rgba(31,224,164,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.section{padding:92px 0;}
.section-tight{padding:64px 0;}
.section-light{background:var(--bg-light);color:var(--ink);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-size:12.5px;letter-spacing:.06em;
  background:rgba(31,224,164,.06);
}
.eyebrow i{font-size:11px;}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;}
.sec-title{font-size:34px;line-height:1.25;letter-spacing:-.01em;font-weight:700;}
.sec-sub{color:var(--text-2);font-size:15px;margin-top:10px;}
.sec-more{
  flex:0 0 auto;font-size:14px;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid var(--line-strong);border-radius:999px;padding:8px 16px;
  transition:background .16s ease-out,transform .16s ease-out;
}
.sec-more:hover{background:rgba(31,224,164,.1);transform:translateX(2px);}
.section-light .sec-title{color:var(--ink);}
.section-light .sec-sub{color:var(--ink-2);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease-out,background .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out,opacity .16s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#06120D;}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:0 0 22px rgba(31,224,164,.25);}
.btn-primary:active{transform:translateY(0);background:#0E966F;}
.btn-ghost{border-color:var(--line-strong);color:var(--text-1);background:transparent;}
.btn-ghost:hover{background:rgba(31,224,164,.1);color:var(--primary);transform:translateY(-2px);border-color:var(--primary);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--ink);border-color:var(--light-line);}
.btn-light:hover{border-color:var(--primary);color:var(--primary-deep);transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none!important;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(10,14,18,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .2s ease-out;
}
.site-header.is-stuck{background:var(--bg-elevated);}
.header-inner{
  height:var(--header-h);display:flex;align-items:center;gap:28px;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--primary),var(--secondary));
  color:#06120D;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--text-1);}
.brand-text em{font-size:11px;font-style:normal;color:var(--text-3);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 12px;border-radius:8px;
  transition:color .16s ease-out,background .16s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;background:var(--primary);
  transform:translateX(-50%);transition:width .18s ease-out;border-radius:2px;
}
.nav-link:hover{color:var(--primary);background:rgba(31,224,164,.06);}
.nav-link:hover::after{width:60%;}
.nav-link.active{color:var(--primary);}
.nav-link.active::after{width:60%;}
.header-side{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.search-box{
  position:relative;display:flex;align-items:center;
  width:220px;height:38px;border-radius:10px;
  background:#101720;border:1px solid var(--line);
  transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.search-box i{position:absolute;left:12px;font-size:13px;color:var(--text-3);}
.search-box input{
  width:100%;height:100%;background:transparent;border:0;outline:none;
  color:var(--text-1);padding:0 12px 0 34px;font-size:14px;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(31,224,164,.16);}
.hamburger{
  display:none;width:40px;height:40px;border-radius:10px;background:transparent;
  border:1px solid var(--line);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;}
body.nav-open .hamburger span:nth-child(1){transform:translateY(6px) rotate(45deg);}
body.nav-open .hamburger span:nth-child(2){opacity:0;}
body.nav-open .hamburger span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:calc(var(--header-h) + 56px) 0 84px;
  background:
    radial-gradient(900px 420px at 12% -10%,rgba(31,224,164,.14),transparent 70%),
    radial-gradient(700px 400px at 92% 8%,rgba(122,92,255,.14),transparent 72%),
    var(--bg-base);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.hero-copy{animation:fadeUp .45s ease-out both;}
.hero h1{
  font-size:52px;line-height:1.22;letter-spacing:-.01em;font-weight:700;margin:22px 0 18px;
}
.hero h1 .hl{
  color:var(--primary);
  background:linear-gradient(transparent 62%,rgba(31,224,164,.22) 62%);
}
.hero-lead{font-size:18px;color:var(--text-2);max-width:520px;line-height:1.75;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 30px;}
.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;border-top:1px solid var(--line);padding-top:22px;}
.stat-num{font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--primary);letter-spacing:-.02em;}
.stat-label{font-size:13px;color:var(--text-3);margin-top:2px;}
.hero-visual{position:relative;animation:fadeUp .5s ease-out both;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid var(--line);
}
.hero-float{
  position:absolute;right:18px;bottom:-18px;
  background:var(--bg-surface);border:1px solid var(--primary);
  border-radius:14px;padding:14px 18px;box-shadow:var(--shadow-card);
  min-width:210px;
}
.hero-float .fl-title{font-size:13px;color:var(--text-3);}
.hero-float .fl-value{font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--text-1);margin:4px 0 8px;}
.hero-float .fl-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;}
.hero-float .fl-bar i{display:block;height:100%;width:78%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--secondary));}
.hero-sign{height:2px;width:40%;margin-top:56px;border-radius:2px;background:linear-gradient(90deg,var(--primary),transparent);}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}

/* ---------- 快捷入口条 ---------- */
.quick-bar{padding:0 0 8px;}
.quick-scroll{display:flex;gap:14px;overflow-x:auto;padding:6px 0 14px;scrollbar-width:none;}
.quick-scroll::-webkit-scrollbar{display:none;}
.quick-item{
  flex:0 0 auto;display:flex;align-items:center;gap:10px;
  padding:12px 20px;border-radius:999px;
  background:var(--bg-surface);border:1px solid var(--line);
  font-size:14.5px;color:var(--text-2);
  transition:transform .16s ease-out,border-color .16s ease-out,color .16s ease-out;
}
.quick-item i{color:var(--primary);font-size:15px;}
.quick-item:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--text-1);box-shadow:0 0 0 1px var(--line-strong);}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--bg-surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out;
}
.card:hover{transform:translateY(-2px);border-color:var(--primary);box-shadow:var(--shadow-card),0 0 0 1px var(--line-strong),0 0 22px rgba(31,224,164,.18);}
.card:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.card-media{overflow:hidden;border-bottom:1px solid var(--line);}
.card-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .2s ease-out;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{
  align-self:flex-start;font-size:11px;letter-spacing:.04em;
  padding:4px 10px;border-radius:999px;
  color:#C8BEFF;border:1px solid rgba(122,92,255,.45);background:rgba(122,92,255,.12);
}
.card-title{font-size:18px;font-weight:600;line-height:1.45;color:var(--text-1);}
.card-desc{font-size:14px;color:var(--text-2);line-height:1.7;}
.card-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}
.card-meta .m-left{display:inline-flex;align-items:center;gap:6px;}
.card-meta .m-link{color:var(--primary);display:inline-flex;align-items:center;gap:5px;}
.card-more-wrap{margin-top:30px;text-align:center;display:none;}

/* ---------- 评价轮播 ---------- */
.reviews{padding:88px 0;}
.review-rail{
  display:flex;gap:16px;overflow-x:auto;padding:4px 4px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
  mask-image:linear-gradient(90deg,#000 0,#000 92%,transparent 100%);
  -webkit-mask-image:linear-gradient(90deg,#000 0,#000 92%,transparent 100%);
}
.review-rail::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:var(--bg-surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;
  display:flex;flex-direction:column;gap:14px;
  transition:border-color .16s ease-out,transform .16s ease-out;
}
.review-card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.stars{display:flex;gap:4px;color:var(--accent);font-size:13px;}
.review-text{font-size:15px;color:var(--text-2);line-height:1.75;}
.review-user{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);}
.review-user img{width:48px;height:48px;border-radius:50%;object-fit:cover;border:1px solid var(--line);}
.review-user .u-name{font-size:14px;color:var(--text-1);font-weight:600;}
.review-user .u-from{font-size:12.5px;color:var(--text-3);}
.review-ctrl{display:flex;gap:10px;}
.review-ctrl button{
  width:40px;height:40px;border-radius:50%;background:transparent;
  border:1px solid var(--line-strong);color:var(--primary);cursor:pointer;
  transition:background .16s ease-out,transform .16s ease-out;
}
.review-ctrl button:hover{background:rgba(31,224,164,.12);transform:translateY(-2px);}
.review-ctrl button[disabled]{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 保障条 ---------- */
.assure{background:var(--bg-light);padding:0;}
.assure-inner{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding:30px 0;}
.assure-item{display:flex;align-items:center;gap:16px;color:var(--ink);}
.assure-item i{font-size:28px;color:var(--primary-deep);flex:0 0 auto;}
.assure-item .a-title{font-size:15px;font-weight:600;}
.assure-item .a-sub{font-size:13px;color:var(--ink-2);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--bg-surface);overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(31,224,164,.16) 1px,transparent 1px);
  background-size:26px 26px;opacity:.6;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;border:1px solid rgba(31,224,164,.28);
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0;}
.cta-inner h2{font-size:34px;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.cta-inner p{color:var(--text-2);margin-top:12px;font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex:0 0 auto;}

/* ---------- 最新信息 ---------- */
.news-wrap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.news-card{
  display:flex;gap:16px;padding:18px;
  background:var(--bg-surface);border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:transform .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out;
}
.news-card:hover{transform:translateY(-2px);border-color:var(--primary);box-shadow:0 0 0 1px var(--line-strong);}
.news-thumb{flex:0 0 96px;height:72px;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{display:flex;flex-direction:column;gap:8px;min-width:0;flex:1;}
.news-title{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-desc{font-size:13.5px;color:var(--text-2);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--text-3);}
.news-meta i{font-size:11px;}
.news-empty{
  grid-column:1/-1;min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line);border-radius:var(--radius-card);
  color:var(--text-3);font-size:14px;text-align:center;
}
.news-empty svg{width:56px;height:56px;stroke:var(--text-3);opacity:.8;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border-radius:var(--radius-img);border:1px solid var(--light-line);
  border-left:3px solid var(--primary);overflow:hidden;
  transition:border-left-color .18s ease-out,box-shadow .16s ease-out;
}
.faq-item:hover{box-shadow:var(--shadow-light);}
.faq-item[open]{border-left-color:var(--secondary);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  font-size:17px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .chev{color:var(--primary-deep);transition:transform .2s ease-out;}
.faq-item[open] summary .chev{transform:rotate(180deg);}
.faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--ink-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:#070A0D;border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;flex-direction:column;gap:16px;}
.footer-brand .brand-text strong{font-size:17px;}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .16s ease-out,transform .16s ease-out;display:inline-block;}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-contact li{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:10px;}
.footer-contact i{color:var(--primary);font-size:13px;width:16px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .search-box{width:180px;}
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:1023px){
  .hero{padding-top:calc(var(--header-h) + 40px);}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:38px;}
  .hero-visual img{aspect-ratio:16/9;max-height:320px;}
  .hero-float{bottom:-14px;right:12px;}
  .sec-title{font-size:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:56px 0;}
  .cta-inner h2{font-size:27px;}
  .news-wrap{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .assure-inner{grid-template-columns:repeat(2,minmax(0,1fr));}
  .search-box{display:none;}
  .hamburger{display:flex;}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:280px;
    background:var(--bg-elevated);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;
    padding:84px 20px 100px;transform:translateX(100%);
    transition:transform .24s ease-out;z-index:120;overflow-y:auto;
  }
  body.nav-open .main-nav{transform:translateX(0);}
  .nav-link{padding:14px 12px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-link::after{display:none;}
  .header-side{z-index:130;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  body{font-size:16px;}
  .hero h1{font-size:32px;}
  .hero-lead{font-size:16.5px;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
  .stat-num{font-size:20px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .sec-title{font-size:26px;}
  .card-grid{grid-template-columns:1fr;}
  .card-grid .card:nth-child(n+5){display:none;}
  .card-more-wrap{display:block;}
  .review-card{flex:0 0 78vw;}
  .review-ctrl{display:none;}
  .news-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .assure-inner{grid-template-columns:1fr;padding:24px 0;gap:18px;}
  .cta-inner h2{font-size:24px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .hero-actions{flex-direction:column;}
}
@media (max-width:480px){
  .hero h1{font-size:28px;}
  .brand-text em{display:none;}
  .card-media img{aspect-ratio:16/10;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
}

/* roulang page: article */
:root{
  --bg-base:#0A0E12;
  --bg-surface:#121821;
  --bg-elevated:#1A2230;
  --bg-deep:#070A0D;
  --bg-light:#F5F8F7;
  --primary:#1FE0A4;
  --primary-deep:#12B183;
  --secondary:#7A5CFF;
  --accent:#FFB020;
  --text-1:#EAF2F0;
  --text-2:#9BAAB8;
  --text-3:#6B7A8A;
  --ink-1:#0E1418;
  --ink-2:#4A5A60;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,224,164,.35);
  --danger:#E5484D;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 10px 28px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px var(--line-strong),0 0 22px rgba(31,224,164,.18);
  --shadow-light:0 6px 20px rgba(14,20,24,.08);
  --container:1240px;
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:Inter,"DIN Alternate",ui-monospace,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color .16s ease-out,transform .16s ease-out;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.01em;font-weight:700;}
p{margin:0 0 1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-family:var(--font-num);font-weight:700;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .16s ease-out,color .16s ease-out,border-color .16s ease-out,transform .16s ease-out,box-shadow .16s ease-out;
}
.btn-primary{background:var(--primary);color:#06120D;}
.btn-primary:hover{background:var(--primary-deep);color:#06120D;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);background:#0E9B73;}
.btn-ghost{background:transparent;color:var(--text-1);border-color:rgba(255,255,255,.18);}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--primary);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--ink-1);border-color:#E3EAE8;}
.btn-light:hover{border-color:var(--primary);color:var(--primary-deep);transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:48px;padding:0 28px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,14,18,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:background .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-stuck{background:var(--bg-elevated);box-shadow:0 8px 24px rgba(0,0,0,.5);}
.header-inner{display:flex;align-items:center;gap:22px;height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#06120D;font-weight:700;font-size:18px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;color:var(--text-1);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px;}
.nav-link{
  position:relative;padding:0 12px;height:60px;display:inline-flex;align-items:center;
  font-size:15px;color:var(--text-2);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:14px;height:2px;
  background:var(--primary);transition:left .18s ease-out,right .18s ease-out;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{left:12px;right:12px;}
.nav-link.active{color:var(--primary);}
.nav-link.active::after{left:12px;right:12px;}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  position:relative;display:flex;align-items:center;
  width:220px;height:38px;background:#101720;border:1px solid var(--line);
  border-radius:var(--r-btn);padding:0 12px;gap:8px;
}
.search-box i{color:var(--text-3);font-size:13px;}
.search-box input{
  flex:1;height:100%;background:transparent;border:0;outline:none;
  color:var(--text-1);font-size:14px;font-family:inherit;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(31,224,164,.18);}
.drawer-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  background:transparent;border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.drawer-toggle span{display:block;width:18px;height:2px;background:var(--text-1);transition:transform .2s ease-out,opacity .2s ease-out;}
.drawer-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.drawer-toggle.is-open span:nth-child(2){opacity:0;}
.drawer-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,7,9,.6);opacity:0;visibility:hidden;
  transition:opacity .2s ease-out,visibility .2s ease-out;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:80;
  background:var(--bg-elevated);border-left:1px solid var(--line);
  padding:24px 20px;display:flex;flex-direction:column;gap:8px;
  transform:translateX(102%);transition:transform .24s ease-out;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-head strong{font-size:15px;}
.drawer-close{width:36px;height:36px;border-radius:10px;background:transparent;border:1px solid var(--line);color:var(--text-2);cursor:pointer;}
.drawer-close:hover{color:var(--primary);border-color:var(--line-strong);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  height:48px;display:flex;align-items:center;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line);padding:0 4px;
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--primary);}
.drawer-cta{margin-top:auto;width:100%;}

/* ============ 面包屑 ============ */
.crumbs-bar{border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(26,34,48,.55),rgba(10,14,18,0));}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:18px 0;font-size:13.5px;color:var(--text-3);
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);opacity:.7;}
.breadcrumb .current{
  color:var(--text-2);max-width:46ch;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;
}

/* ============ 文章头 ============ */
.article-wrap{padding:48px 0 88px;}
.article-shell{max-width:800px;margin:0 auto;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border:1px solid rgba(122,92,255,.45);border-radius:999px;
  font-size:11.5px;letter-spacing:.06em;color:#B7A6FF;background:rgba(122,92,255,.12);
}
.badge:hover{border-color:var(--secondary);color:#CFC4FF;}
.article-head h1{
  font-size:36px;line-height:1.3;margin:18px 0 18px;color:var(--text-1);
}
.meta-row{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);font-family:var(--font-num);
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);display:inline-block;}
.meta-row .meta-cn{font-family:var(--font-cn);}
.article-rule{
  height:2px;width:40%;margin:28px 0 34px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(31,224,164,0));
}

/* ============ 正文排版 ============ */
.article-body{
  min-height:320px;font-size:17px;line-height:1.85;color:var(--text-1);
}
.article-body p{margin:0 0 1.1em;color:#DCE6E4;}
.article-body h2{
  font-size:22px;margin:40px 0 16px;padding-left:14px;border-left:3px solid var(--primary);
  color:var(--text-1);
}
.article-body h3{font-size:18px;margin:32px 0 14px;color:var(--text-1);}
.article-body h4{font-size:17px;margin:26px 0 12px;color:var(--text-1);}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(31,224,164,.35);}
.article-body a:hover{color:var(--primary-deep);border-bottom-color:var(--primary-deep);}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:22px;}
.article-body ul{list-style:none;}
.article-body ul li{position:relative;padding-left:6px;margin-bottom:8px;color:#DCE6E4;}
.article-body ul li::before{
  content:"";position:absolute;left:-14px;top:.75em;width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:8px;color:#DCE6E4;}
.article-body ol li::marker{color:var(--primary);font-family:var(--font-num);font-weight:700;}
.article-body blockquote{
  margin:24px 0;padding:18px 20px;background:var(--bg-surface);
  border-left:3px solid var(--primary);border-radius:0 var(--r-btn) var(--r-btn) 0;
  color:var(--text-2);font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{margin:24px auto;border-radius:var(--r-img);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th{background:var(--bg-elevated);color:var(--text-1);text-align:left;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body code{
  font-family:var(--font-num);font-size:13px;background:var(--bg-elevated);
  padding:2px 8px;border-radius:8px;color:var(--primary);
}
.article-body pre{
  background:var(--bg-surface);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:18px;overflow-x:auto;margin:24px 0;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* 空态 / 错误态 */
.empty-state{
  min-height:320px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--bg-surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;
}
.empty-state i{font-size:34px;color:var(--text-3);}
.empty-state p{color:var(--text-2);font-size:15px;margin:0;}
.state-error{background:#2A1416;border-color:rgba(229,72,77,.5);}

/* ============ 标签 ============ */
.tag-block{margin-top:44px;padding-top:26px;border-top:1px solid var(--line);}
.tag-block h3{font-size:14px;color:var(--text-3);font-weight:600;letter-spacing:.06em;margin-bottom:14px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--bg-surface);border:1px solid var(--line);color:var(--text-2);font-size:13.5px;
}
.tag:hover{color:var(--primary);border-color:var(--line-strong);transform:translateY(-2px);}

/* ============ 相关推荐 ============ */
.related{padding:0 0 88px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:26px;}
.section-head .sub{font-size:14px;color:var(--text-3);margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;gap:14px;padding:16px;border-radius:var(--r-card);
  background:var(--bg-surface);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out;
}
.post-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-card),var(--shadow-hover);}
.post-card .thumb{width:96px;height:72px;flex:0 0 96px;object-fit:cover;border-radius:12px;}
.post-card .pc-body{display:flex;flex-direction:column;gap:6px;min-width:0;}
.post-card h3{font-size:16px;line-height:1.4;color:var(--text-1);}
.post-card p{font-size:13.5px;line-height:1.6;color:var(--text-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .pc-meta{font-size:12.5px;color:var(--text-3);font-family:var(--font-num);}

/* ============ CTA ============ */
.cta-band{
  background:var(--bg-surface);
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:64px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:28px;margin-bottom:10px;}
.cta-inner p{color:var(--text-2);font-size:15px;margin:0;max-width:56ch;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.75;margin:0;max-width:34ch;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .16s ease-out,transform .16s ease-out;}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-contact li{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:8px;}
.footer-contact i{color:var(--primary);font-size:13px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .main-nav{gap:0;}
  .nav-link{padding:0 9px;font-size:14.5px;}
  .search-box{width:180px;}
}
@media (max-width:1023px){
  .main-nav,.search-box{display:none;}
  .drawer-toggle{display:flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .article-head h1{font-size:30px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .header-inner{height:56px;gap:12px;}
  .brand-text em{display:none;}
  .article-wrap{padding:32px 0 56px;}
  .article-head h1{font-size:26px;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:20px;margin:32px 0 14px;}
  .article-body h3{font-size:17px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{padding:48px 0;}
  .cta-inner h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .breadcrumb{padding:14px 0;}
  .breadcrumb .current{max-width:60vw;}
}
@media (max-width:519px){
  .article-head h1{font-size:23px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .post-card .thumb{width:80px;height:64px;flex:0 0 80px;}
}

/* roulang page: category1 */
:root{
  --bg-base:#0A0E12;
  --bg-surface:#121821;
  --bg-elevated:#1A2230;
  --bg-light:#F5F8F7;
  --primary:#1FE0A4;
  --primary-deep:#12B183;
  --secondary:#7A5CFF;
  --accent:#FFB020;
  --text-1:#EAF2F0;
  --text-2:#9BAAB8;
  --text-3:#6B7A8A;
  --dark-ink:#0E1418;
  --dark-mute:#4A5A60;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,224,164,.35);
  --line-light:#E3EAE8;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-pill:999px;
  --shadow-card:0 10px 28px rgba(0,0,0,.45);
  --shadow-hover:0 10px 28px rgba(0,0,0,.45),0 0 0 1px var(--line-strong),0 0 22px rgba(31,224,164,.18);
  --shadow-light:0 6px 20px rgba(14,20,24,.08);
  --container:1240px;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:Inter,"DIN Alternate",ui-monospace,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:0;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.01em;font-weight:700;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:inherit;text-decoration:none;transition:color .16s ease-out;}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(10,14,18,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:background .2s ease-out;
}
.site-header.is-stuck{background:var(--bg-elevated);}
.header-inner{
  display:flex;align-items:center;gap:28px;
  min-height:60px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#06120D;font-weight:800;font-size:18px;font-family:var(--font-num);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;
  padding:8px 12px;font-size:15px;color:var(--text-2);
  border-radius:8px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;
  background:var(--primary);transform:translateX(-50%);
  transition:width .18s ease-out;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{width:60%;}
.nav-link.active{color:var(--primary);}
.nav-link.active::after{width:60%;}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{position:relative;width:220px;}
.search-box i{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--text-3);
}
.search-box input{
  width:100%;height:40px;border-radius:var(--radius-btn);
  background:#101720;border:1px solid var(--line);
  padding:0 12px 0 34px;font-size:14px;color:var(--text-1);
  transition:border-color .16s ease-out, box-shadow .16s ease-out;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(31,224,164,.22);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background .16s ease-out,color .16s ease-out,border-color .16s ease-out,transform .16s ease-out,box-shadow .16s ease-out;
}
.btn-primary{background:var(--primary);color:#06120D;border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-deep);border-color:var(--primary-deep);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);place-items:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--text-1);
  border-radius:2px;margin:3px 0;transition:transform .2s ease-out,opacity .2s ease-out;
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;
  background:var(--bg-elevated);border-left:1px solid var(--line);
  transform:translateX(105%);transition:transform .24s ease-out;
  z-index:300;display:flex;flex-direction:column;
  padding:78px 20px 20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  padding:14px 6px;font-size:15.5px;color:var(--text-2);
  border-bottom:1px solid var(--line);line-height:1.4;
}
.drawer-nav a.active,.drawer-nav a:hover{color:var(--primary);}
.drawer-cta{margin-top:auto;width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,7,10,.6);
  opacity:0;visibility:hidden;transition:opacity .24s ease-out;z-index:250;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:calc(60px + 62px) 0 78px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(900px 380px at 12% -10%,rgba(31,224,164,.10),transparent 62%),
    radial-gradient(700px 320px at 92% 0%,rgba(122,92,255,.12),transparent 66%);
}
.hero::after{
  content:"";position:absolute;left:0;bottom:0;width:40%;max-width:520px;height:2px;
  background:linear-gradient(90deg,var(--primary),rgba(31,224,164,0));
}
.hero-grid{
  display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);color:var(--primary);
  font-size:12.5px;letter-spacing:.06em;margin-bottom:20px;
}
.hero h1{font-size:52px;margin-bottom:18px;}
.hero h1 .hl{color:var(--primary);}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-trust{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  padding-top:24px;border-top:1px solid var(--line);
}
.hero-trust .num{
  font-family:var(--font-num);font-weight:700;font-size:20px;color:var(--text-1);
  display:block;line-height:1.2;
}
.hero-trust .lbl{font-size:12.5px;color:var(--text-3);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-card);border:1px solid var(--line);
}
.float-card{
  position:absolute;right:18px;bottom:-26px;width:236px;
  background:var(--bg-surface);border:1px solid var(--line-strong);
  border-radius:14px;padding:16px;box-shadow:var(--shadow-card);
}
.float-card .fc-title{
  font-size:12.5px;color:var(--text-3);letter-spacing:.05em;margin-bottom:10px;
}
.float-card .fc-row{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13.5px;padding:6px 0;border-bottom:1px dashed var(--line);
}
.float-card .fc-row:last-child{border-bottom:0;padding-bottom:0;}
.float-card .fc-row span:first-child{color:var(--text-2);}
.float-card .fc-row span:last-child{color:var(--primary);font-family:var(--font-num);font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:34px;max-width:760px;}
.section-title{font-size:34px;margin-bottom:14px;}
.section-desc{font-size:16px;color:var(--text-2);max-width:680px;}
.section-foot{margin-top:34px;display:flex;justify-content:center;}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:26px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-surface);
}
.stat-item{border-left:2px solid var(--line-strong);padding-left:16px;}
.stat-item .val{
  font-family:var(--font-num);font-weight:700;font-size:26px;color:var(--primary);
  display:block;line-height:1.2;
}
.stat-item .txt{font-size:13.5px;color:var(--text-2);}

/* ---------- 入口卡片网格 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.entry-card{
  display:flex;flex-direction:column;
  background:var(--bg-surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out;
}
.entry-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.entry-card .media{aspect-ratio:4/3;overflow:hidden;background:var(--bg-elevated);}
.entry-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease-out;}
.entry-card:hover .media img{transform:scale(1.03);}
.entry-card .body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{
  align-self:flex-start;
  padding:3px 11px;border-radius:var(--radius-pill);
  font-size:11px;letter-spacing:.05em;
  color:#CBBEFF;border:1px solid rgba(122,92,255,.5);
  background:rgba(122,92,255,.10);
}
.entry-card h3{font-size:18px;font-weight:600;}
.entry-card .excerpt{font-size:14px;color:var(--text-2);line-height:1.7;}
.card-meta{
  display:flex;align-items:center;gap:14px;
  font-size:12.5px;color:var(--text-3);
  padding-top:12px;margin-top:auto;border-top:1px solid var(--line);
}
.card-meta i{font-size:11px;margin-right:5px;}
.card-meta .go{margin-left:auto;color:var(--primary);}
.entry-card:hover .go{text-decoration:underline;}

/* ---------- 说明段落 + 清单 ---------- */
.split{
  display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;
}
.split h2{font-size:34px;margin-bottom:16px;}
.split p{color:var(--text-2);font-size:16px;}
.check-panel{
  background:var(--bg-surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px;
}
.check-panel h3{font-size:19px;margin-bottom:18px;}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list li i{color:var(--primary);font-size:15px;margin-top:5px;flex-shrink:0;}
.check-list li strong{color:var(--text-1);font-weight:600;display:block;font-size:15.5px;margin-bottom:2px;}

/* ---------- 保障条 ---------- */
.assure{
  background:var(--bg-light);color:var(--dark-ink);
  padding:34px 0;
}
.assure-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.assure-item{display:flex;gap:14px;align-items:flex-start;}
.assure-item i{font-size:26px;color:var(--primary-deep);margin-top:2px;}
.assure-item .t{font-size:15px;font-weight:600;color:var(--dark-ink);display:block;}
.assure-item .d{font-size:13px;color:var(--dark-mute);}

/* ---------- FAQ ---------- */
.faq-section{background:var(--bg-light);color:var(--dark-ink);padding:88px 0;}
.faq-section .section-title{color:var(--dark-ink);}
.faq-section .section-desc{color:var(--dark-mute);}
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line-light);
  border-radius:14px;box-shadow:var(--shadow-light);
  overflow:hidden;
}
.faq-item summary{
  display:flex;align-items:center;gap:14px;
  padding:18px 22px 18px 19px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--dark-ink);
  border-left:3px solid var(--primary);
  transition:border-color .18s ease-out,background .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  margin-left:auto;font-size:13px;color:var(--dark-mute);
  transition:transform .2s ease-out;
}
.faq-item[open] summary{border-left-color:var(--secondary);}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item .answer{
  padding:0 22px 20px 22px;font-size:15px;line-height:1.8;color:var(--dark-mute);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;padding:76px 0;border-top:1px solid var(--line);
  background-color:var(--bg-surface);
  background-image:radial-gradient(rgba(31,224,164,.16) 1px,transparent 1px);
  background-size:22px 22px;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  position:relative;z-index:1;
}
.cta-inner h2{font-size:30px;margin-bottom:10px;}
.cta-inner p{color:var(--text-2);font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-shrink:0;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:#070A0D;border-top:1px solid var(--line);padding:72px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-1);}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{font-size:14px;color:var(--text-2);display:inline-block;}
.footer-col ul li a:hover{color:var(--primary);transform:translateX(2px);}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2);margin-bottom:12px;}
.footer-contact li i{color:var(--primary);font-size:14px;width:16px;text-align:center;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}

/* ---------- 状态样式 ---------- */
.state-loading{
  border-radius:var(--radius-card);
  background:linear-gradient(90deg,#141B26 25%,#1C2634 37%,#141B26 63%);
  background-size:400% 100%;animation:sk 1.4s ease-in-out infinite;
}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}
.state-empty{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;border:1px dashed var(--line);border-radius:var(--radius-card);
  color:var(--text-3);font-size:14px;text-align:center;padding:30px;
}
.state-error{
  background:#2A1416;border:1px solid #E5484D;border-radius:var(--radius-card);
  padding:16px 18px;font-size:14px;color:#FFBEC0;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero h1{font-size:46px;}
  .hero-grid{gap:40px;}
  .split{gap:40px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:grid;}
  .search-box{display:none;}
  .hero{padding:calc(60px + 44px) 0 60px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero h1{font-size:36px;}
  .hero-visual img{aspect-ratio:16/9;max-height:320px;}
  .float-card{position:static;width:100%;margin-top:16px;}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;}
  .assure-grid{grid-template-columns:repeat(2,1fr);}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .section{padding:64px 0;}
  .section-title{font-size:27px;}
  .split h2{font-size:27px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .header-inner{gap:14px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-trust{grid-template-columns:repeat(2,1fr);gap:14px;}
  .hero-cta .btn{flex:1 1 auto;}
  .entry-grid{grid-template-columns:1fr;}
  .assure-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;gap:16px;}
  .section-title{font-size:24px;}
  .split h2{font-size:24px;}
  .faq-item summary{font-size:16px;padding:16px 16px 16px 14px;}
  .faq-item .answer{padding:0 16px 18px 16px;}
  .cta-inner h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:519px){
  .hero{padding:calc(60px + 34px) 0 48px;}
  .hero h1{font-size:26px;}
  .brand-text em{display:none;}
  .brand-text strong{font-size:15px;}
  .entry-card .body{padding:18px;}
  .check-panel{padding:20px;}
}

/* roulang page: category2 */
:root{
  --bg-base:#0A0E12;
  --bg-surface:#121821;
  --bg-elevated:#1A2230;
  --bg-light:#F5F8F7;
  --primary:#1FE0A4;
  --primary-deep:#12B183;
  --secondary:#7A5CFF;
  --accent:#FFB020;
  --text-1:#EAF2F0;
  --text-2:#9BAAB8;
  --text-3:#6B7A8A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,224,164,.35);
  --dark-1:#0E1418;
  --dark-2:#4A5A60;
  --light-line:#E3EAE8;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;
  --shadow-card:0 10px 28px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px var(--line-strong),0 0 22px rgba(31,224,164,.18),0 14px 34px rgba(0,0,0,.5);
  --shadow-light:0 6px 20px rgba(14,20,24,.08);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:Inter,"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.01em;font-weight:700}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg-base);
  border-bottom:1px solid var(--line);
  transition:background .22s ease,box-shadow .22s ease;
}
.site-header.is-stuck{background:var(--bg-elevated);box-shadow:0 8px 24px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;gap:26px;height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#06120D;font-weight:700;font-size:17px;
  display:grid;place-items:center;font-family:var(--font-num);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:15px;color:var(--text-1);font-weight:600;letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.04em}
.main-nav{display:flex;align-items:stretch;gap:2px;flex:1}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:60px;padding:0 13px;
  font-size:15px;color:var(--text-2);transition:color .16s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:13px;height:2px;
  background:var(--primary);transition:left .18s ease,right .18s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{left:13px;right:13px}
.nav-link.active{color:var(--text-1);font-weight:600}
.nav-link.active::after{left:13px;right:13px}
.header-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;width:220px;height:38px;padding:0 12px;
  background:#101720;border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .16s ease,box-shadow .16s ease;
}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(31,224,164,.18)}
.search-box i{color:var(--text-3);font-size:13px}
.search-box input{flex:1;min-width:0;background:transparent;border:0;outline:0;color:var(--text-1);font-size:14px}
.search-box input::placeholder{color:var(--text-3)}
.menu-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;padding:0 9px;background:transparent;border:1px solid var(--line);
  border-radius:var(--r-btn);cursor:pointer;transition:border-color .16s ease;
}
.menu-toggle span{display:block;height:2px;background:var(--text-1);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.menu-toggle:hover{border-color:var(--line-strong)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer{
  position:fixed;top:0;right:0;z-index:92;height:100%;width:min(320px,86vw);
  background:var(--bg-surface);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .26s ease;
  display:flex;flex-direction:column;padding:20px 20px 24px;
}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-head span{font-size:13px;color:var(--text-3);letter-spacing:.06em}
.drawer-close{background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);width:36px;height:36px;color:var(--text-2);cursor:pointer}
.drawer-close:hover{color:var(--primary);border-color:var(--line-strong)}
.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 6px;
  font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:var(--primary)}
.drawer-link.active{color:var(--primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:18px}
.drawer-foot .btn{width:100%;justify-content:center}
.drawer-mask{
  position:fixed;inset:0;z-index:90;background:rgba(4,7,10,.66);
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  border:1px solid transparent;transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-primary{background:var(--primary);color:#06120D}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text-1);border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-dark-ghost{background:transparent;color:var(--dark-1);border-color:#CDD8D5}
.btn-dark-ghost:hover{border-color:var(--primary-deep);color:var(--primary-deep);transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:50px;padding:0 28px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:20px 0 0;font-size:13px;color:var(--text-3)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb a{color:var(--text-3);transition:color .16s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb .current{color:var(--text-2)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 84px;background:var(--bg-base)}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(10,14,18,.80),rgba(10,14,18,.97)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-dots{
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(31,224,164,.20) 1px,transparent 1px);
  background-size:26px 26px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 72%);
  mask-image:linear-gradient(180deg,#000,transparent 72%);
  opacity:.55;
}
.hero::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:40%;height:2px;background:linear-gradient(90deg,transparent,var(--primary),transparent);
}
.hero-inner{position:relative;z-index:1;max-width:780px;margin:0 auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 15px;
  border:1px solid var(--line-strong);border-radius:var(--r-pill);
  background:rgba(31,224,164,.07);color:var(--primary);
  font-size:13px;letter-spacing:.06em;
}
.hero h1{font-size:52px;margin-top:22px}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);margin:18px auto 0;max-width:620px}
.hero-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:32px}
.hero-stats{
  list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  margin-top:46px;padding-top:22px;border-top:1px solid var(--line);
}
.hero-stats .num{display:block;font-family:var(--font-num);font-weight:700;font-size:21px;color:var(--text-1)}
.hero-stats .label{display:block;margin-top:4px;font-size:13px;color:var(--text-3)}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section-head{max-width:720px;margin-bottom:38px}
.section-head h2{font-size:34px}
.section-head p{margin-top:14px;font-size:15px;color:var(--text-2);line-height:1.8}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(122,92,255,.55);background:rgba(122,92,255,.12);
  color:#B7A6FF;font-size:11.5px;letter-spacing:.05em;
}

/* ---------- 步骤流程 ---------- */
.steps{list-style:none;position:relative;max-width:980px}
.steps::before{
  content:"";position:absolute;left:27px;top:30px;bottom:30px;width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(31,224,164,.06));
}
.step{display:grid;grid-template-columns:56px 1fr;gap:26px;align-items:flex-start}
.step + .step{margin-top:22px}
.step-index{
  position:relative;z-index:1;width:56px;height:56px;border-radius:var(--r-pill);
  border:2px solid var(--line-strong);background:var(--bg-elevated);
  display:grid;place-items:center;font-family:var(--font-num);font-weight:700;color:var(--primary);font-size:16px;
}
.step-card{
  background:var(--bg-surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.step-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.step-card h3{font-size:22px}
.step-card > p{margin-top:12px;font-size:15px;color:var(--text-2);line-height:1.8}
.tick-list{list-style:none;display:grid;gap:8px;margin-top:16px}
.tick-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2)}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:var(--r-pill);background:var(--primary);
}

/* ---------- 对比小卡 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.compare-card{
  background:var(--bg-surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.compare-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.compare-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.compare-body{padding:26px}
.compare-body h3{font-size:20px;margin-top:14px}
.compare-body p{margin-top:12px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- 浅色条带 ---------- */
.band{background:var(--bg-light);color:var(--dark-1);padding:52px 0}
.band-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.band-head h2{font-size:26px;color:var(--dark-1)}
.band-head span{font-size:14px;color:var(--dark-2)}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.band-item i{font-size:26px;color:var(--primary-deep)}
.band-item strong{display:block;margin:12px 0 6px;font-size:15px;color:var(--dark-1)}
.band-item p{font-size:13.5px;color:var(--dark-2);line-height:1.75}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;background:var(--bg-base);border-top:1px solid var(--line);padding:88px 0}
.cta-dots{
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(31,224,164,.16) 1px,transparent 1px);
  background-size:24px 24px;opacity:.6;
  -webkit-mask-image:linear-gradient(90deg,#000,transparent 80%);
  mask-image:linear-gradient(90deg,#000,transparent 80%);
}
.cta::after{
  content:"";position:absolute;right:-180px;top:-180px;width:520px;height:520px;
  border-radius:var(--r-pill);border:1px solid rgba(31,224,164,.22);
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:36px}
.cta-inner h2{font-size:32px;max-width:640px}
.cta-inner p{margin-top:14px;font-size:15px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- FAQ ---------- */
.faq{background:var(--bg-light);color:var(--dark-1);padding:88px 0}
.faq-head{text-align:center;max-width:720px;margin:0 auto 34px}
.faq-head h2{font-size:32px;color:var(--dark-1)}
.faq-head p{margin-top:14px;font-size:15px;color:var(--dark-2)}
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:#fff;border-radius:var(--r-img);border-left:3px solid var(--primary);
  padding:18px 22px;box-shadow:var(--shadow-light);
  transition:border-color .2s ease;
}
.faq-item[open]{border-left-color:var(--secondary)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:600;color:var(--dark-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--dark-2);font-size:14px;transition:transform .22s ease}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-item p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--dark-2)}

/* ---------- 页脚 ---------- */
.site-footer{background:#070A0D;border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:34px}
.footer-brand .brand{margin-bottom:0}
.footer-desc{margin-top:16px;max-width:340px;font-size:14px;line-height:1.8;color:var(--text-3)}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:14px}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{display:inline-block;font-size:14px;color:var(--text-2);transition:color .16s ease,transform .16s ease}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--text-2)}
.footer-contact i{color:var(--primary);margin-top:4px;font-size:13px}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:18px 0;
  display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero h1{font-size:46px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .menu-toggle{display:flex}
  .search-box{display:none}
  .hero{padding:52px 0 64px}
  .hero h1{font-size:34px}
  .hero-sub{font-size:16px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px}
  .section{padding:64px 0}
  .section-head h2{font-size:26px}
  .compare-grid{grid-template-columns:1fr}
  .band-grid{grid-template-columns:repeat(2,1fr)}
  .cta{padding:64px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner h2{font-size:26px}
  .faq{padding:64px 0}
  .faq-head h2{font-size:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .brand-text strong{font-size:14px}
  .brand-text em{font-size:10.5px}
  .step{grid-template-columns:44px 1fr;gap:16px}
  .step-index{width:44px;height:44px;font-size:14px}
  .steps::before{left:21px}
  .step-card{padding:18px}
  .step-card h3{font-size:19px}
  .compare-body{padding:18px}
  .band-head h2{font-size:22px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .container{padding:0 18px}
  .hero h1{font-size:29px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-stats{grid-template-columns:1fr 1fr}
  .hero-stats .num{font-size:18px}
  .band-grid{grid-template-columns:1fr}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .faq-item{padding:16px}
  .faq-item summary{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category3 */
:root{
  --bg-base:#0A0E12;
  --bg-surface:#121821;
  --bg-elevated:#1A2230;
  --bg-deep:#070A0D;
  --bg-light:#F5F8F7;
  --primary:#1FE0A4;
  --primary-deep:#12B183;
  --secondary:#7A5CFF;
  --accent:#FFB020;
  --text-1:#EAF2F0;
  --text-2:#9BAAB8;
  --text-3:#6B7A8A;
  --ink-1:#0E1418;
  --ink-2:#4A5A60;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,224,164,.35);
  --line-light:#E3EAE8;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-dark:0 10px 28px rgba(0,0,0,.45);
  --shadow-light:0 6px 20px rgba(14,20,24,.08);
  --container:1240px;
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:Inter,"DIN Alternate",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none;transition:color .16s ease-out,border-color .16s ease-out,background-color .16s ease-out}
a:hover{color:var(--primary)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .16s ease-out,background-color .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out,color .16s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#06120D}
.btn-primary:hover{background:var(--primary-deep);color:#06120D;transform:translateY(-2px);box-shadow:0 0 22px rgba(31,224,164,.25)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--primary);transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:50px;padding:0 28px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none!important}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:11px;line-height:1.6;
  border:1px solid rgba(122,92,255,.5);color:#B7A6FF;letter-spacing:.06em;
  background:rgba(122,92,255,.10);
}
.tag-mint{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:11px;
  border:1px solid var(--line-strong);color:var(--primary);background:rgba(31,224,164,.08);letter-spacing:.06em;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(10,14,18,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(6px);
  transition:background-color .2s ease-out;
}
.site-header.is-stuck{background:var(--bg-elevated)}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:60px;display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#06120D;font-weight:700;font-size:18px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:15px;font-weight:700;color:var(--text-1);letter-spacing:-.01em}
.brand-text em{font-size:11px;font-style:normal;color:var(--text-3);letter-spacing:.04em}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto}
.nav-link{
  position:relative;padding:0 12px;height:60px;display:inline-flex;align-items:center;
  font-size:15px;color:var(--text-2);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:14px;height:2px;width:0;
  background:var(--primary);transform:translateX(-50%);transition:width .18s ease-out;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{width:60%}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:60%}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-box{position:relative;width:220px}
.search-box i{position:absolute;left:12px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--text-3)}
.search-box input{
  width:100%;height:38px;border-radius:var(--radius-btn);
  background:#101720;border:1px solid var(--line);color:var(--text-1);
  padding:0 12px 0 34px;font-size:14px;
}
.search-box input::placeholder{color:var(--text-3)}
.search-box input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(31,224,164,.18)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;background:transparent;
  border:1px solid var(--line);color:var(--text-1);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--primary)}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0}
.crumb ol{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3);opacity:.6}
.crumb .current{color:var(--text-2)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:56px 0 88px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(31,224,164,.10) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.hero-copy h1{font-size:52px;margin:18px 0 16px}
.hero-copy h1 span{color:var(--primary)}
.hero-sub{font-size:16.5px;color:var(--text-2);max-width:520px;margin-bottom:26px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 28px;padding-top:22px;border-top:1px solid var(--line)}
.trust-item{font-size:13.5px;color:var(--text-2)}
.trust-item b{font-family:var(--font-num);font-size:17px;font-weight:700;color:var(--primary);margin-right:6px}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);border:1px solid var(--line)}
.hero-float{
  position:absolute;right:-6px;bottom:-22px;background:var(--bg-surface);
  border:1px solid var(--line-strong);border-radius:var(--radius-card);
  padding:16px 20px;box-shadow:var(--shadow-dark);min-width:210px;
}
.hero-float .num{font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--primary);line-height:1.2}
.hero-float .txt{font-size:13px;color:var(--text-2);margin-top:4px}
.hero-sign{position:absolute;left:0;bottom:0;height:2px;width:40%;background:linear-gradient(90deg,var(--primary),transparent)}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0}
.section.tight{padding-top:0}
.section-head{max-width:660px;margin-bottom:34px}
.section-head h2{font-size:34px;margin:12px 0 12px}
.section-head p{color:var(--text-2);font-size:15.5px}

/* ---------- 图文交替 ---------- */
.alt-row{
  display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;
  padding:34px 0;
}
.alt-row + .alt-row{border-top:1px solid var(--line)}
.alt-row .alt-media{position:relative}
.alt-row .alt-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);border:1px solid var(--line)}
.alt-row .alt-media::after{
  content:"";position:absolute;left:18px;bottom:-10px;width:60px;height:3px;border-radius:3px;
  background:var(--secondary);opacity:.75;
}
.alt-row.reverse .alt-media{order:2}
.alt-row.reverse .alt-body{order:1}
.alt-body h3{font-size:22px;margin:14px 0 12px}
.alt-body p{color:var(--text-2);font-size:15.5px}
.alt-list{margin:16px 0 18px;display:grid;gap:8px}
.alt-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2)}
.alt-list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);
}
.alt-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--primary)}
.alt-link i{font-size:12px;transition:transform .16s ease-out}
.alt-link:hover i{transform:translateX(4px)}

/* ---------- 数据条带（浅色区） ---------- */
.stats-band{background:var(--bg-light);color:var(--ink-1);padding:56px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{padding:20px 22px;background:#fff;border:1px solid var(--line-light);border-radius:var(--radius-card);box-shadow:var(--shadow-light)}
.stat-item .stat-num{font-family:var(--font-num);font-size:32px;font-weight:700;color:#0E6B52;line-height:1.2}
.stat-item .stat-num small{font-size:14px;font-family:var(--font-cn);font-weight:600;margin-left:4px;color:var(--ink-2)}
.stat-item h4{font-size:15px;margin:10px 0 6px;color:var(--ink-1)}
.stat-item p{font-size:13.5px;color:var(--ink-2);line-height:1.7;margin:0}

/* ---------- FAQ ---------- */
.faq-section{background:var(--bg-light);color:var(--ink-1);padding:88px 0}
.faq-section .section-head h2{color:var(--ink-1)}
.faq-section .section-head p{color:var(--ink-2)}
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--radius-img);
  padding:0 22px;box-shadow:var(--shadow-light);position:relative;overflow:hidden;
}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);transition:background-color .18s ease-out}
.faq-item[open]::before{background:var(--secondary)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 34px 20px 0;position:relative;
  font-size:17px;font-weight:600;color:var(--ink-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:0;top:50%;transform:translateY(-50%);color:var(--ink-2);
  transition:transform .2s ease-out;font-size:14px;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(180deg);color:var(--secondary)}
.faq-item .faq-body{padding:0 34px 22px 0;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- CTA ---------- */
.cta-section{position:relative;padding:88px 0;background:var(--bg-deep);overflow:hidden}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(122,92,255,.16) 1px,transparent 1px);
  background-size:20px 20px;opacity:.55;
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;
  border:1px solid var(--line);border-radius:var(--radius-card);padding:40px;
  background:linear-gradient(135deg,rgba(31,224,164,.08),rgba(122,92,255,.06));
}
.cta-inner h2{font-size:34px;margin-bottom:10px}
.cta-inner p{color:var(--text-2);font-size:15.5px;max-width:560px;margin:0}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.footer-contact i{color:var(--primary);font-size:13px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 状态样式 ---------- */
.skeleton{background:linear-gradient(90deg,rgba(255,255,255,.06),rgba(255,255,255,.12),rgba(255,255,255,.06));background-size:200% 100%;animation:sk 1.4s infinite;border-radius:var(--radius-img)}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}
.state-error{background:#2A1416;border:1px solid #E5484D;border-radius:var(--radius-img);padding:16px 18px;font-size:14px;color:#FFC9CB}
.state-empty{display:grid;place-items:center;gap:10px;min-height:220px;border:1px dashed var(--line);border-radius:var(--radius-card);color:var(--text-3);font-size:14px;text-align:center}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:290px;z-index:80;
  background:var(--bg-elevated);border-left:1px solid var(--line);
  transform:translateX(105%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;padding:20px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-link{
  display:flex;align-items:center;height:48px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--text-2);
}
.drawer-link.active{color:var(--primary)}
.drawer-foot{margin-top:auto;padding-top:16px}
.drawer-foot .btn{width:100%}
.backdrop{position:fixed;inset:0;background:rgba(4,7,10,.6);z-index:70;opacity:0;pointer-events:none;transition:opacity .2s ease-out}
.backdrop.open{opacity:1;pointer-events:auto}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-copy h1{font-size:46px}
}
@media (max-width:1023px){
  .main-nav,.search-box{display:none}
  .nav-toggle{display:inline-grid;place-items:center}
  .hero{padding:34px 0 72px}
  .hero-grid,.alt-row{grid-template-columns:1fr;gap:34px}
  .hero-visual img{aspect-ratio:16/9;max-height:320px}
  .hero-float{right:12px;bottom:12px}
  .alt-row.reverse .alt-media{order:0}
  .alt-row.reverse .alt-body{order:0}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container,.header-inner{padding:0 18px}
  .hero-copy h1{font-size:32px;margin:14px 0 12px}
  .section{padding:56px 0}
  .section-head h2{font-size:26px}
  .alt-body h3{font-size:19px}
  .stats-band,.faq-section{padding:56px 0}
  .stat-item .stat-num{font-size:26px}
  .cta-inner h2{font-size:26px}
  .cta-section{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:519px){
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .stats-grid{grid-template-columns:1fr}
  .trust-row{gap:10px 20px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
}

/* roulang page: category4 */
:root{
  --bg-base:#0A0E12;
  --bg-deep:#070A0D;
  --bg-surface:#121821;
  --bg-elevated:#1A2230;
  --bg-light:#F5F8F7;
  --primary:#1FE0A4;
  --primary-deep:#12B183;
  --secondary:#7A5CFF;
  --accent:#FFB020;
  --text-1:#EAF2F0;
  --text-2:#9BAAB8;
  --text-3:#6B7A8A;
  --ink-1:#0E1418;
  --ink-2:#4A5A60;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,224,164,.35);
  --light-line:#E3EAE8;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-dark:0 10px 28px rgba(0,0,0,.45);
  --shadow-light:0 6px 20px rgba(14,20,24,.08);
  --container:1240px;
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:Inter,"DIN Alternate",ui-monospace,sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:0;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.01em;font-weight:700;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background .16s ease-out,color .16s ease-out,border-color .16s ease-out,transform .16s ease-out,box-shadow .16s ease-out;
}
.btn-primary{background:var(--primary);color:#06120D;}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:0 8px 22px rgba(31,224,164,.22);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border-color:rgba(255,255,255,.18);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--primary);transform:translateY(-2px);}
.btn-outline{border-color:var(--line-strong);color:var(--primary);background:transparent;}
.btn-outline:hover{background:rgba(31,224,164,.1);transform:translateY(-2px);box-shadow:0 0 0 1px var(--line-strong);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:48px;padding:0 28px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn.is-loading{position:relative;color:transparent;}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(6,18,13,.35);border-top-color:#06120D;animation:spin 1.4s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ============ 品牌标识 ============ */
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#06120D;font-weight:800;font-size:18px;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15.5px;font-weight:700;color:var(--text-1);}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.04em;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg-base);
  border-bottom:1px solid var(--line);
  transition:background .2s ease-out,box-shadow .2s ease-out;
}
.site-header.scrolled{background:var(--bg-elevated);box-shadow:0 6px 20px rgba(0,0,0,.4);}
.header-inner{display:flex;align-items:center;gap:22px;height:60px;}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:6px;}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;
  transition:color .16s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--primary);transition:left .18s ease-out,right .18s ease-out;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.active{color:var(--primary);}
.nav-link.active::after{left:0;right:0;}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:38px;padding:0 12px;
  background:#101720;border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:var(--text-1);font-size:14px;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(31,224,164,.18);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:11px;
  background:transparent;border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;top:60px;right:0;bottom:0;width:min(320px,84vw);
  background:var(--bg-elevated);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;padding:20px 20px calc(20px + env(safe-area-inset-bottom));
  overflow-y:auto;z-index:79;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-link{
  display:flex;align-items:center;height:48px;font-size:15.5px;color:var(--text-2);
  border-bottom:1px solid var(--line);transition:color .16s ease-out,padding-left .16s ease-out;
}
.drawer-link:hover,.drawer-link.active{color:var(--primary);padding-left:4px;}
.drawer-cta{margin-top:auto;width:100%;}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;
  padding:52px 0 40px;
  background:
    radial-gradient(760px 320px at 82% -10%,rgba(31,224,164,.09),transparent 70%),
    radial-gradient(520px 300px at 6% 110%,rgba(122,92,255,.10),transparent 72%),
    var(--bg-base);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:26px 26px;
}
.hero-grid{
  position:relative;
  display:grid;grid-template-columns:1.35fr .85fr;gap:40px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 14px;border-radius:999px;
  border:1px solid rgba(122,92,255,.5);color:#C7BAFF;
  background:rgba(122,92,255,.12);
  font-size:12.5px;letter-spacing:.04em;margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(26px,3.4vw,38px);
  margin-bottom:14px;
}
.hero-sub{color:var(--text-2);font-size:16.5px;max-width:560px;margin-bottom:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;}
.hero-stats li{display:flex;flex-direction:column;line-height:1.4;}
.hero-stats strong{font-family:var(--font-num);font-size:19px;color:var(--primary);font-weight:700;}
.hero-stats span{font-size:13px;color:var(--text-3);}
.hero-visual{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-dark);
}
.hero-visual img{width:100%;height:250px;object-fit:cover;}
.float-card{
  position:absolute;right:14px;bottom:14px;
  background:var(--bg-surface);border:1px solid var(--line-strong);
  border-radius:var(--radius-img);padding:10px 16px;
  display:flex;flex-direction:column;line-height:1.35;
}
.float-card strong{font-family:var(--font-num);font-size:20px;color:var(--primary);}
.float-card span{font-size:12.5px;color:var(--text-3);}
.hero-line{
  position:relative;height:2px;width:min(40%,480px);
  margin:38px auto 0;
  background:linear-gradient(90deg,var(--primary),transparent);
  border-radius:2px;
}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.5vw,32px);margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15.5px;}
.section-tight{padding-top:0;}

/* ============ 条目清单 ============ */
.entry-list{border-top:1px solid var(--line);}
.entry-row{
  display:grid;grid-template-columns:64px 1fr auto;gap:22px;align-items:center;
  padding:24px 20px;border-bottom:1px solid var(--line);
  border-radius:var(--radius-img);
  transition:background .16s ease-out,transform .16s ease-out;
}
.entry-row:hover{background:var(--bg-surface);transform:translateY(-2px);}
.entry-no{
  font-family:var(--font-num);font-size:17px;font-weight:700;color:var(--primary);
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(31,224,164,.07);
  display:flex;align-items:center;justify-content:center;
}
.entry-body h3{font-size:18px;margin-bottom:6px;}
.entry-body p{color:var(--text-2);font-size:14.5px;line-height:1.7;margin:0;}

/* ============ 提示说明卡 ============ */
.notice-card{
  display:grid;grid-template-columns:1fr 1.45fr;gap:38px;
  background:var(--bg-surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:34px;
  box-shadow:var(--shadow-dark);
}
.notice-head h2{font-size:clamp(21px,2.2vw,27px);margin-bottom:12px;}
.notice-head p{color:var(--text-2);font-size:15px;}
.notice-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
}
.notice-list li:first-child{padding-top:0;}
.notice-list li:last-child{border-bottom:0;padding-bottom:0;}
.notice-no{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;
  background:rgba(122,92,255,.16);border:1px solid rgba(122,92,255,.42);
  color:#C7BAFF;font-family:var(--font-num);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.notice-list h3{font-size:16.5px;margin-bottom:4px;}
.notice-list p{color:var(--text-2);font-size:14.5px;line-height:1.7;margin:0;}

/* ============ 浅色区 ============ */
.light-band{background:var(--bg-light);color:var(--ink-1);padding:72px 0;}
.light-band h2{color:var(--ink-1);font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;}
.light-band .lead{color:var(--ink-2);font-size:15.5px;max-width:720px;margin-bottom:32px;}
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  padding-bottom:40px;margin-bottom:40px;border-bottom:1px solid var(--light-line);
}
.stat-item{display:flex;align-items:center;gap:14px;}
.stat-item i{font-size:24px;color:var(--primary-deep);}
.stat-item strong{display:block;font-family:var(--font-num);font-size:19px;color:var(--ink-1);line-height:1.3;}
.stat-item span{font-size:13px;color:var(--ink-2);}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{
  background:#FFFFFF;border:1px solid var(--light-line);
  border-left:3px solid var(--primary);
  border-radius:var(--radius-img);padding:0 20px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item[open]{border-left-color:var(--secondary);box-shadow:var(--shadow-light);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:17px;font-weight:600;color:var(--ink-1);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--primary-deep);transition:transform .2s ease-out;
}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--secondary);}
.faq-item .faq-answer{padding:0 0 20px;color:var(--ink-2);font-size:15px;line-height:1.8;margin:0;}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--bg-surface);padding:76px 0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.55;
  background-image:radial-gradient(rgba(31,224,164,.16) 1px,transparent 1px);
  background-size:22px 22px;
}
.cta-band::after{
  content:"";position:absolute;right:-140px;top:-90px;width:420px;height:420px;
  border:1px solid rgba(31,224,164,.28);border-radius:50%;
}
.cta-inner{position:relative;display:flex;align-items:center;gap:36px;flex-wrap:wrap;justify-content:space-between;}
.cta-copy{max-width:640px;}
.cta-copy h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:10px;}
.cta-copy p{color:var(--text-2);font-size:15.5px;margin:0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:60px 0 26px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-desc{color:var(--text-2);font-size:14px;line-height:1.75;max-width:340px;margin:0;}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:var(--text-2);font-size:14px;transition:color .16s ease-out,transform .16s ease-out;display:inline-block;}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-contact li{display:flex;align-items:center;gap:9px;color:var(--text-2);font-size:14px;}
.footer-contact i{color:var(--primary);font-size:13px;width:16px;text-align:center;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 状态样式 ============ */
.is-empty{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;color:var(--text-2);font-size:14px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--radius-card);
}
.is-error{
  background:#2A1416;border:1px solid #E5484D;border-radius:var(--radius-img);
  padding:14px 16px;color:#FFD9DA;font-size:14px;
}
.skeleton{
  background:linear-gradient(90deg,rgba(255,255,255,.05),rgba(255,255,255,.11),rgba(255,255,255,.05));
  background-size:200% 100%;border-radius:var(--radius-img);
  animation:sk 1.4s ease-in-out infinite;
}
@keyframes sk{0%{background-position:200% 0;}100%{background-position:-200% 0;}}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav-search{width:180px;}
  .main-nav{gap:18px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-visual img{height:230px;}
  .notice-card{grid-template-columns:1fr;gap:24px;padding:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .section{padding:60px 0;}
  .page-hero{padding:40px 0 34px;}
  .hero-visual img{height:200px;}
  .hero-stats{gap:20px;}
  .hero-stats li{min-width:calc(50% - 10px);}
  .entry-row{grid-template-columns:46px 1fr;gap:14px;padding:18px 12px;}
  .entry-row .btn{grid-column:2;justify-self:start;margin-top:6px;}
  .entry-no{width:38px;height:38px;font-size:15px;border-radius:11px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .light-band{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:519px){
  .nav-search{display:none;}
  .header-inner{gap:12px;}
  .brand-text em{display:none;}
  .hero-actions .btn{width:100%;}
  .stat-strip{grid-template-columns:1fr;gap:14px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}