/* roulang page: index */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#EFEBFF;
  --signal:#00D6A8;
  --accent:#C8F24E;
  --ink:#0C0A1E;
  --ink-deep:#141130;
  --mist:#F7F6FC;
  --card:#FFFFFF;
  --text:#1B1830;
  --muted:#6C6885;
  --line:#E6E3F5;
  --danger:#E2485F;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-soft:0 6px 24px rgba(28,20,80,.08);
  --shadow-hover:0 14px 34px rgba(28,20,80,.14);
  --shadow-deep:0 8px 30px rgba(0,0,0,.35);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',system-ui,'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--mist);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease, background-color .22s ease, border-color .22s ease, transform .22s ease;}
a.text-link{color:var(--text);border-bottom:1px solid transparent;padding-bottom:2px;}
a.text-link:hover{color:var(--brand);border-bottom-color:var(--brand);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid rgba(108,76,241,.45);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-dark{background:var(--ink);color:#F3F1FF;}
.section-dark .muted{color:#A9A4C9;}
.bg-pattern{
  background-image:radial-gradient(rgba(108,76,241,.06) 1px, transparent 1px);
  background-size:14px 14px;
}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,10,30,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(108,76,241,.28);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:74px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:#fff;font-weight:700;font-size:16px;letter-spacing:.01em;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,#8B6BFF 100%);
  display:grid;place-items:center;gap:2px;
  box-shadow:0 0 0 1px rgba(200,242,78,.35) inset;
}
.brand-mark span{display:block;width:4px;height:4px;background:var(--accent);border-radius:1px;}
.brand-mark .pixgrid{display:grid;grid-template-columns:repeat(2,4px);gap:3px;}
.brand-text{white-space:nowrap;}
.nav-chips{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;min-width:0;
  overflow-x:auto;overflow-y:hidden;
  scrollbar-width:none;-ms-overflow-style:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  padding:7px 14px;border-radius:999px;
  font-size:13.5px;font-weight:500;color:#CFCBF0;
  border:1px solid rgba(200,196,240,.22);
  background:transparent;
  white-space:nowrap;
  transition:all .22s ease;
}
.chip:hover{color:#fff;border-color:rgba(200,242,78,.5);background:rgba(108,76,241,.18);}
.chip.is-active{
  color:var(--brand);
  background:var(--brand-soft);
  border-color:var(--brand);
  font-weight:600;
}
.nav-cta{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 18px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  box-shadow:0 6px 18px rgba(108,76,241,.35);
}
.nav-cta:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 10px 24px rgba(108,76,241,.5);}
.nav-cta:active{transform:translateY(0);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:all .22s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(108,76,241,.32);}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 12px 28px rgba(108,76,241,.46);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1px solid rgba(200,196,240,.4);color:#fff;background:transparent;}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-outline{border:1px solid var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-1px);}
.btn-block{width:100%;}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--brand-soft);color:var(--brand);
}
.tag-signal{background:rgba(0,214,168,.12);color:#009E7C;}
.tag-accent{background:rgba(200,242,78,.28);color:#5B6B10;}
.tag-dark{background:rgba(108,76,241,.22);color:#CFCBF0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block;border-radius:2px;}
.section-dark .eyebrow{color:var(--accent);}

.section-title{font-size:30px;margin-top:14px;}
.section-sub{margin-top:14px;max-width:660px;color:var(--muted);font-size:16px;line-height:1.85;}
.section-dark .section-sub{color:#A9A4C9;}

/* Hero */
.hero{
  position:relative;
  background-color:var(--ink);
  background-image:linear-gradient(100deg,rgba(12,10,30,.94) 0%,rgba(12,10,30,.78) 48%,rgba(20,17,48,.6) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:#fff;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 4px);
  opacity:.6;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:8fr 4fr;gap:48px;
  align-items:center;
  padding:104px 0 96px;
}
.hero h1{
  font-size:44px;line-height:1.24;letter-spacing:-.02em;
  margin-top:20px;
}
.hero h1 .hl{color:var(--accent);}
.hero-sub{
  margin-top:22px;font-size:17px;line-height:1.85;color:#C6C2E4;max-width:56ch;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:42px;
  padding-top:26px;border-top:1px solid rgba(200,196,240,.16);
}
.hero-meta div{font-size:13px;color:#9C97BE;}
.hero-meta strong{display:block;font-size:15px;color:#fff;font-weight:600;margin-bottom:2px;}
.hero-card{
  border-radius:var(--radius-card);
  background:rgba(20,17,48,.86);
  border:1px solid rgba(108,76,241,.5);
  box-shadow:var(--shadow-deep);
  padding:26px;
}
.hero-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 4px rgba(0,214,168,.18);display:inline-block;}
.hero-list{margin-top:20px;display:grid;gap:14px;}
.hero-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding-bottom:14px;border-bottom:1px dashed rgba(200,196,240,.16);
  font-size:14px;color:#C6C2E4;line-height:1.7;
}
.hero-list li:last-child{border-bottom:none;padding-bottom:0;}
.hero-list .idx{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;
  background:rgba(200,242,78,.16);color:var(--accent);
  font-size:11.5px;font-weight:700;display:grid;place-items:center;
}

/* 编号能力列表 */
.capability-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;margin-top:52px;}
.cap-main{
  border-radius:var(--radius-card);
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
}
.cap-main img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.cap-main-body{padding:26px;}
.cap-main-body h3{font-size:20px;margin-bottom:12px;}
.cap-main-body p{color:var(--muted);font-size:15px;}
.cap-list{display:grid;gap:0;}
.cap-item{
  display:grid;grid-template-columns:56px 1fr;gap:18px;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.cap-item:first-child{padding-top:0;}
.cap-item:last-child{border-bottom:none;padding-bottom:0;}
.cap-num{
  font-size:15px;font-weight:700;color:var(--accent);
  background:var(--ink-deep);height:38px;width:44px;border-radius:10px;
  display:grid;place-items:center;letter-spacing:.02em;
}
.cap-item h3{font-size:17px;margin-bottom:8px;}
.cap-item p{color:var(--muted);font-size:15px;line-height:1.8;}

/* 数据条 */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:56px;
  border-top:1px solid rgba(108,76,241,.3);
  border-bottom:1px solid rgba(108,76,241,.3);
}
.stat{
  padding:38px 28px;
  border-right:1px solid rgba(108,76,241,.22);
}
.stat:last-child{border-right:none;}
.stat b{display:block;font-size:40px;line-height:1.1;font-weight:700;color:var(--signal);letter-spacing:-.02em;}
.stat span{display:block;margin-top:10px;font-size:13px;color:#A9A4C9;line-height:1.7;}

/* 案例错位卡 */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:54px;}
.case-card{
  border-radius:var(--radius-card);
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .26s ease, box-shadow .26s ease, border-color .26s ease;
}
.case-card:nth-child(2){transform:translateY(26px);}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.4);}
.case-card:nth-child(2):hover{transform:translateY(22px);}
.case-card .thumb{overflow:hidden;}
.case-card img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform .4s ease;}
.case-card:hover img{transform:scale(1.03);}
.case-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.case-body h3{font-size:17px;line-height:1.5;}
.case-body p{font-size:14px;color:var(--muted);line-height:1.8;}
.case-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);}

/* 方案步骤 */
.step-list{margin-top:52px;display:grid;gap:0;counter-reset:step;}
.step{
  display:grid;grid-template-columns:120px 1fr;gap:28px;
  padding:30px 0;border-top:1px solid var(--line);
  align-items:start;
}
.step:last-child{border-bottom:1px solid var(--line);}
.step-no{
  font-size:34px;font-weight:700;color:var(--brand);
  opacity:.28;line-height:1;
}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{color:var(--muted);font-size:15px;max-width:70ch;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:50px;}
.news-card{
  border-radius:var(--radius-card);
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .26s ease, box-shadow .26s ease, border-color .26s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.4);}
.news-card .thumb{overflow:hidden;background:var(--brand-soft);}
.news-card img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform .4s ease;}
.news-card:hover img{transform:scale(1.03);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{font-size:16.5px;line-height:1.55;}
.news-card:hover h3{color:var(--brand);}
.news-body p{font-size:14px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--muted);}
.empty-state{
  margin-top:50px;
  border:1px dashed rgba(108,76,241,.45);
  border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;
  background:rgba(108,76,241,.04);
}
.empty-state .ico{
  width:52px;height:52px;margin:0 auto 18px;
  border-radius:14px;background:var(--brand-soft);
  display:grid;place-items:center;color:var(--brand);font-size:22px;font-weight:700;
}
.empty-state p{color:var(--muted);font-size:15px;}

/* FAQ */
.faq-wrap{margin-top:52px;display:grid;gap:12px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--card);
  overflow:hidden;
  transition:border-color .22s ease, background-color .22s ease;
}
.faq-item.is-open{border-color:rgba(108,76,241,.45);background:var(--brand-soft);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text);
  position:relative;
}
.faq-q:hover{color:var(--brand);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  border:1px solid var(--line);display:grid;place-items:center;
  font-size:15px;font-weight:600;color:var(--brand);transition:transform .26s ease, background-color .26s ease;
}
.faq-item.is-open .faq-icon{background:var(--brand);color:#fff;border-color:var(--brand);transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .32s ease;
}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a p{padding:0 24px 24px;color:#4A4568;font-size:15px;line-height:1.9;max-width:78ch;}

/* 联系区 */
.contact-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;margin-top:54px;align-items:start;}
.form-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-soft);
  padding:32px;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px;color:var(--text);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;
  background:var(--mist);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  font-size:15px;line-height:1.6;
  transition:border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
  appearance:none;
}
.field textarea{min-height:120px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(108,76,241,.14);
}
.field.has-error input,.field.has-error textarea{border-color:var(--danger);}
.field .err{display:none;margin-top:6px;font-size:12.5px;color:var(--danger);}
.field.has-error .err{display:block;}
.form-note{margin-top:14px;font-size:12.5px;color:var(--muted);line-height:1.8;}
.form-ok{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--radius-btn);
  background:rgba(0,214,168,.12);color:#00806A;font-size:14px;border:1px solid rgba(0,214,168,.4);
}
.form-ok.show{display:block;}
.info-card{
  background:var(--ink-deep);color:#EDEBFF;
  border-radius:var(--radius-card);
  border:1px solid rgba(108,76,241,.4);
  box-shadow:var(--shadow-deep);
  padding:32px;
}
.info-card h3{font-size:18px;margin-bottom:18px;}
.info-list{display:grid;gap:18px;}
.info-list li{display:grid;gap:4px;padding-bottom:16px;border-bottom:1px dashed rgba(200,196,240,.18);}
.info-list li:last-child{border-bottom:none;padding-bottom:0;}
.info-list span{font-size:12.5px;color:#9C97BE;letter-spacing:.05em;}
.info-list strong{font-size:15px;font-weight:600;color:#fff;}
.info-badge{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  padding:8px 14px;border-radius:999px;
  background:rgba(0,214,168,.14);color:var(--signal);font-size:12.5px;font-weight:600;
}

/* 页脚 */
.site-footer{background:var(--ink);color:#B9B4D8;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;}
.footer-brand .brand-mark{box-shadow:0 0 0 1px rgba(200,242,78,.35) inset;}
.footer-desc{margin-top:16px;font-size:13.5px;line-height:1.9;color:#9C97BE;max-width:32ch;}
.footer-title{font-size:13px;font-weight:600;letter-spacing:.1em;color:#fff;margin-bottom:16px;text-transform:uppercase;}
.footer-links{display:grid;gap:11px;}
.footer-links a{font-size:14px;color:#B9B4D8;}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:56px;padding:22px 0 26px;
  border-top:1px solid rgba(108,76,241,.35);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:#8A85AD;
}
.footer-bottom a{color:#8A85AD;}
.footer-bottom a:hover{color:var(--accent);}
.to-top{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:999px;
  border:1px solid rgba(200,196,240,.3);color:#CFCBF0;font-size:12.5px;
}
.to-top:hover{border-color:var(--accent);color:var(--accent);}

/* 响应式 */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:80px 0 72px;}
  .hero h1{font-size:36px;}
  .capability-grid{grid-template-columns:1fr;gap:36px;}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .case-card:nth-child(2){transform:none;}
  .case-card:nth-child(2):hover{transform:translateY(-4px);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stats-bar{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:none;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid rgba(108,76,241,.22);}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-sm{padding:48px 0;}
  .nav-wrap{height:64px;gap:12px;}
  .brand-text{font-size:14px;}
  .nav-cta{padding:8px 14px;font-size:13px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;padding:12px 18px;}
  .hero-meta{gap:20px;}
  .section-title{font-size:22px;}
  .section-sub{font-size:15px;}
  .case-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .step{grid-template-columns:1fr;gap:10px;}
  .step-no{font-size:26px;}
  .stat{padding:26px 18px;}
  .stat b{font-size:30px;}
  .form-card,.info-card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-q{font-size:15.5px;padding:18px 18px;}
  .faq-a p{padding:0 18px 20px;}
}
@media (max-width:520px){
  .stats-bar{grid-template-columns:1fr;}
  .stat{border-right:none;border-bottom:1px solid rgba(108,76,241,.22);}
  .stat:last-child{border-bottom:none;}
  .btn{width:100%;}
  .nav-cta{width:auto;}
}

/* roulang page: article */
:root{
  --brand:#6C4CF1;
  --brand-deep:#5B3BE0;
  --brand-soft:#EFEBFF;
  --accent:#C8F24E;
  --signal:#00D6A8;
  --ink:#0C0A1E;
  --ink-2:#141130;
  --mist:#F7F6FC;
  --white:#FFFFFF;
  --text:#1B1830;
  --text-soft:#2A2742;
  --muted:#6C6885;
  --line:#E6E3F5;
  --danger:#E2485F;
  --r-card:16px;
  --r-btn:12px;
  --r-chip:999px;
  --r-img:14px;
  --sh-soft:0 6px 24px rgba(28,20,80,.08);
  --sh-deep:0 8px 30px rgba(0,0,0,.35);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  background:var(--mist);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .22s ease, border-color .22s ease, background-color .22s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p{margin:0;}
ul,ol{margin:0;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
:focus-visible{outline:2px solid rgba(108,76,241,.55);outline-offset:2px;border-radius:6px;}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,10,30,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{display:flex;align-items:center;gap:20px;min-height:72px;padding:10px 0;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;transition:opacity .2s;}
.brand:hover{opacity:.86;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#6C4CF1 0%,#3B2AA8 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 14px rgba(108,76,241,.45);
}
.pixgrid{display:grid;grid-template-columns:1fr 1fr;gap:2px;width:16px;height:16px;}
.pixgrid span{display:block;border-radius:2px;background:#fff;}
.pixgrid span:nth-child(1){background:var(--accent);}
.pixgrid span:nth-child(2){background:#fff;}
.pixgrid span:nth-child(3){background:#fff;opacity:.65;}
.pixgrid span:nth-child(4){background:var(--signal);}
.brand-text{color:#fff;font-weight:700;font-size:17px;letter-spacing:.2px;white-space:nowrap;}
.nav-chips{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;min-width:0;
  overflow-x:auto;overflow-y:hidden;
  scrollbar-width:none;-ms-overflow-style:none;
  padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  padding:8px 14px;
  font-size:14px;line-height:1.4;
  color:#CFCBE8;
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-chip);
  white-space:nowrap;
  transition:color .2s ease, background-color .2s ease, border-color .2s ease, transform .2s ease;
}
.chip:hover{color:#fff;border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.06);transform:translateY(-1px);}
.chip.is-active{
  background:var(--brand-soft);color:var(--brand);
  border-color:var(--brand);font-weight:600;
}
.nav-cta{
  flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 20px;
  font-size:14px;font-weight:600;
  color:#fff;background:var(--brand);
  border-radius:var(--r-btn);
  box-shadow:0 6px 18px rgba(108,76,241,.4);
  transition:background-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.nav-cta:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 10px 24px rgba(108,76,241,.5);}
.nav-cta:active{transform:translateY(0);}

/* ============ Breadcrumb ============ */
.crumb-bar{background:var(--ink-2);border-bottom:1px solid rgba(255,255,255,.07);}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:14px 0;font-size:13.5px;color:#9E99C4;}
.crumb a{color:#CFCBE8;transition:color .2s ease;}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:#58527F;}
.crumb .current{color:#8E88B8;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ Article hero ============ */
.article-hero{
  position:relative;
  background:var(--ink) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:64px 0 60px;
  overflow:hidden;
}
.article-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(12,10,30,.9) 0%,rgba(20,17,48,.95) 55%,rgba(12,10,30,.98) 100%);
}
.article-hero::after{
  content:'';position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:900px;}
.tag-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;
  font-size:12px;font-weight:600;letter-spacing:.6px;
  color:#0C0A1E;background:var(--accent);
  border-radius:var(--r-chip);
}
.article-hero h1{
  margin:18px 0 0;
  font-size:28px;line-height:1.32;font-weight:700;color:#fff;
  letter-spacing:.2px;
}
@media(min-width:1024px){
  .article-hero{padding:84px 0 72px;}
  .article-hero h1{font-size:40px;}
}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.8;color:#BEB9DE;max-width:70ch;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  margin-top:26px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#9E99C4;
}
.hero-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--signal);display:inline-block;margin-right:7px;}

/* ============ Article body ============ */
.article-section{padding:56px 0 72px;background:var(--mist);}
.article-shell{max-width:820px;margin:0 auto;}
.article-body{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:44px 46px 48px;
  box-shadow:var(--sh-soft);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{font-size:17px;line-height:1.9;color:var(--text-soft);margin:0 0 20px;}
.article-body h2{
  font-size:22px;line-height:1.4;font-weight:700;color:var(--text);
  margin:38px 0 16px;padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{font-size:17px;line-height:1.5;font-weight:600;color:var(--text);margin:28px 0 12px;}
.article-body h4{font-size:16px;font-weight:600;color:var(--text);margin:22px 0 10px;}
.article-body ul,.article-body ol{padding-left:24px;margin:0 0 20px;color:var(--text-soft);}
.article-body li{font-size:17px;line-height:1.9;margin:8px 0;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{
  margin:26px 0;padding:20px 24px;
  background:var(--brand-soft);
  border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;
  color:#403B6E;font-size:16px;line-height:1.85;
}
.article-body blockquote p{font-size:16px;color:#403B6E;margin:0 0 10px;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:26px 0;width:100%;height:auto;box-shadow:var(--sh-soft);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-deep);}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;line-height:1.7;}
.article-body th{background:#FAF9FE;font-weight:600;color:var(--text);}
.article-body code{background:var(--brand-soft);color:#4A2FCF;padding:2px 6px;border-radius:6px;font-size:14px;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}
.article-empty{
  text-align:center;padding:40px 20px;
}
.article-empty .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:18px;
  background:var(--brand-soft);display:flex;align-items:center;justify-content:center;
  font-size:26px;color:var(--brand);
}
.article-empty h2{font-size:22px;font-weight:700;margin-bottom:12px;border:none;padding:0;}
.article-empty p{color:var(--muted);font-size:15px;margin-bottom:24px;}

/* ============ Article footer bar ============ */
.article-foot{
  margin-top:28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-soft);
}
.foot-tags{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.foot-tags .label{font-size:13px;color:var(--muted);margin-right:2px;}
.tag-pill{
  display:inline-flex;align-items:center;
  padding:5px 12px;font-size:12.5px;
  color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(108,76,241,.18);
  border-radius:var(--r-chip);
}
.tag-pill:hover{background:#E5DEFF;}
.foot-actions{display:flex;flex-wrap:wrap;gap:10px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;font-size:14.5px;font-weight:600;
  border-radius:var(--r-btn);border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(108,76,241,.32);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 10px 24px rgba(108,76,241,.42);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(108,76,241,.45);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}

/* ============ Related ============ */
.related{background:var(--white);padding:64px 0 76px;border-top:1px solid var(--line);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px;}
.section-head h2{font-size:22px;line-height:1.4;font-weight:700;letter-spacing:.2px;}
.section-head h2 span{color:var(--brand);}
.section-head p{font-size:14px;color:var(--muted);}
.rel-track{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
}
.rel-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-soft);border-color:rgba(108,76,241,.35);}
.rel-cover{position:relative;aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden;}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.rel-card:hover .rel-cover img{transform:scale(1.04);}
.rel-body{padding:20px 22px 24px;}
.rel-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--brand);background:var(--brand-soft);padding:4px 11px;border-radius:var(--r-chip);}
.rel-body h3{font-size:16.5px;line-height:1.5;font-weight:600;margin:12px 0 8px;color:var(--text);transition:color .2s ease;}
.rel-card:hover .rel-body h3{color:var(--brand);}
.rel-body p{font-size:14px;line-height:1.8;color:var(--muted);}

/* ============ CTA ============ */
.cta-section{background:var(--ink);padding:72px 0;position:relative;overflow:hidden;}
.cta-section::before{
  content:'';position:absolute;inset:0;
  background-image:radial-gradient(rgba(108,76,241,.22) 1px, transparent 1px);
  background-size:26px 26px;opacity:.6;
}
.cta-box{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;
  background:rgba(20,17,48,.72);
  border:1px solid rgba(108,76,241,.45);
  border-radius:20px;
  padding:44px 46px;
  box-shadow:var(--sh-deep);
}
.cta-box h2{font-size:22px;line-height:1.45;font-weight:700;color:#fff;}
.cta-box p{margin-top:14px;font-size:15px;line-height:1.85;color:#B9B4D8;max-width:56ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.btn-accent{background:var(--accent);color:#141130;box-shadow:0 6px 20px rgba(200,242,78,.28);}
.btn-accent:hover{background:#D6FF64;transform:translateY(-1px);}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.35);}
.btn-outline:hover{background:rgba(255,255,255,.08);border-color:#fff;transform:translateY(-1px);}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:#B9B4D8;padding:64px 0 0;border-top:3px solid var(--brand);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px;}
.footer-desc{font-size:14px;line-height:1.85;color:#9E99C4;max-width:38ch;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.3px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:#B9B4D8;transition:color .2s ease, padding-left .2s ease;}
.footer-links a:hover{color:var(--accent);padding-left:4px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#8E88B8;
}
.to-top{color:#CFCBE8;}
.to-top:hover{color:var(--accent);}

/* ============ Responsive ============ */
@media(max-width:1024px){
  .container{padding:0 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-box{grid-template-columns:1fr;padding:36px 32px;}
  .cta-actions{justify-content:flex-start;}
  .article-body{padding:36px 32px 40px;}
}
@media(max-width:768px){
  .nav-wrap{gap:12px;padding:8px 0;}
  .brand-text{font-size:15px;}
  .nav-cta{padding:9px 14px;font-size:13px;}
  .chip{font-size:13px;padding:7px 12px;}
  .article-hero{padding:44px 0 40px;}
  .article-hero h1{font-size:26px;}
  .article-section{padding:36px 0 52px;}
  .article-body{padding:26px 20px 30px;border-radius:14px;}
  .article-body p,.article-body li{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:20px;}
  .rel-track{
    display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding-bottom:8px;margin:0 -20px;padding-left:20px;padding-right:20px;
    scrollbar-width:none;
  }
  .rel-track::-webkit-scrollbar{display:none;}
  .rel-card{flex:0 0 82%;scroll-snap-align:start;}
  .related{padding:48px 0 56px;}
  .cta-section{padding:52px 0;}
  .cta-box{padding:28px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
}
@media(max-width:520px){
  .container{padding:0 20px;}
  .article-hero h1{font-size:23px;line-height:1.35;}
  .hero-meta{font-size:12.5px;gap:8px 14px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .foot-actions{width:100%;}
  .foot-actions .btn{flex:1 1 auto;}
  .brand-text{max-width:38vw;overflow:hidden;text-overflow:ellipsis;}
}

/* roulang page: category1 */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#EFEBFF;
  --mint:#00D6A8;
  --accent:#C8F24E;
  --ink:#0C0A1E;
  --ink-2:#141130;
  --mist:#F7F6FC;
  --white:#FFFFFF;
  --text:#1B1830;
  --text-2:#6C6885;
  --line:#E6E3F5;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-soft:0 6px 24px rgba(28,20,80,.08);
  --shadow-deep:0 8px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  background:var(--mist);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(108,76,241,.42);outline-offset:2px;border-radius:8px;}
.container{max-width:1240px;margin:0 auto;padding:0 32px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,10,30,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,#6C4CF1,#9077FF);
  display:grid;place-items:center;
  box-shadow:0 4px 14px rgba(108,76,241,.45);
}
.pixgrid{display:grid;grid-template-columns:repeat(2,5px);grid-template-rows:repeat(2,5px);gap:2px;}
.pixgrid span{display:block;width:5px;height:5px;background:var(--accent);border-radius:1px;}
.pixgrid span:nth-child(2){background:#FFFFFF;}
.pixgrid span:nth-child(3){background:#FFFFFF;}
.pixgrid span:nth-child(4){background:var(--mint);}
.brand-text{color:#fff;font-weight:700;font-size:17px;letter-spacing:.2px;white-space:nowrap;}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;overflow-x:auto;scrollbar-width:none;padding:4px 0;}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  white-space:nowrap;padding:8px 16px;border-radius:var(--radius-pill);
  font-size:14px;color:#CFCBE8;border:1px solid rgba(255,255,255,.14);
  transition:all .2s ease;
}
.chip:hover{color:#fff;border-color:rgba(255,255,255,.38);background:rgba(255,255,255,.07);}
.chip.is-active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand);font-weight:600;}
.nav-cta{
  flex:0 0 auto;padding:10px 20px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  box-shadow:0 6px 18px rgba(108,76,241,.4);transition:all .22s ease;
}
.nav-cta:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 10px 24px rgba(108,76,241,.5);}
.nav-cta:active{transform:translateY(0);}

/* ---------- 内页首屏 ---------- */
.page-hero{position:relative;background:var(--ink);overflow:hidden;padding:44px 0 72px;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;opacity:.3;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,10,30,.95) 0%,rgba(12,10,30,.82) 52%,rgba(20,17,48,.62) 100%);
}
.hero-inner{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9E98C4;margin-bottom:26px;}
.crumb a{color:#CFCBE8;}
.crumb a:hover{color:var(--accent);}
.crumb .sep{opacity:.45;}
.crumb .current{color:#fff;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(200,242,78,.12);border:1px solid rgba(200,242,78,.4);
  color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.6px;margin-bottom:20px;
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(0,214,168,.18);}
.hero-h1{color:#fff;font-size:clamp(28px,4vw,40px);line-height:1.28;letter-spacing:.5px;}
.hero-h1 em{font-style:normal;color:var(--accent);}
.hero-sub{color:#B9B4D8;font-size:17px;margin-top:18px;max-width:560px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.meta-pill{
  font-size:13px;color:#CFCBE8;padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.04);
}
.hero-card{
  background:rgba(20,17,48,.86);
  border:1px solid rgba(108,76,241,.42);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-deep);
  padding:26px;backdrop-filter:blur(6px);
}
.hero-card-head{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:#B9B4D8;font-weight:600;letter-spacing:.4px;
  padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.1);
}
.hero-card-head .live{width:8px;height:8px;border-radius:50%;background:var(--mint);}
.hero-card-list{margin-top:6px;}
.hero-card-list li{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.09);font-size:14px;color:#B9B4D8;
}
.hero-card-list li:last-child{border-bottom:0;padding-bottom:0;}
.hero-card-list strong{color:#fff;font-weight:600;font-size:14px;text-align:right;}
.hero-card-note{margin-top:18px;font-size:12px;color:#8A85AE;line-height:1.7;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(108,76,241,.35);}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 12px 28px rgba(108,76,241,.5);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff;}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);}
.btn-soft{background:var(--brand-soft);color:var(--brand);border:1px solid rgba(108,76,241,.24);}
.btn-soft:hover{background:#E4DDFF;transform:translateY(-1px);}
.btn-mint{border:1px solid rgba(0,214,168,.55);color:#0A7C63;background:rgba(0,214,168,.09);}
.btn-mint:hover{background:rgba(0,214,168,.16);transform:translateY(-1px);}

/* ---------- 通用板块 ---------- */
.sec{padding:88px 0;}
.sec-light{background:var(--mist);}
.sec-white{background:#fff;}
.sec-dark{background:var(--ink-2);color:#fff;}
.sec-head{max-width:720px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:1.2px;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(108,76,241,.2);
  padding:5px 13px;border-radius:var(--radius-pill);margin-bottom:16px;
}
.sec-dark .eyebrow{background:rgba(108,76,241,.18);border-color:rgba(108,76,241,.5);color:#C9BAFF;}
.sec-title{font-size:clamp(22px,3vw,30px);letter-spacing:.3px;}
.sec-dark .sec-title{color:#fff;}
.sec-desc{margin-top:14px;color:var(--text-2);font-size:16px;}
.sec-dark .sec-desc{color:#B9B4D8;}

/* ---------- 数据条 ---------- */
.stats-band{background:var(--ink);padding:0 0 12px;}
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-card);
  overflow:hidden;
  transform:translateY(-36px);
}
.stat{padding:28px 26px;border-right:1px solid rgba(255,255,255,.09);}
.stat:last-child{border-right:0;}
.stat-num{font-size:32px;font-weight:700;color:var(--mint);line-height:1.2;letter-spacing:.5px;}
.stat-num span{font-size:15px;color:#8A85AE;font-weight:600;margin-left:4px;}
.stat-label{margin-top:8px;font-size:13px;color:#9E98C4;}

/* ---------- 内容范围（7/5 不对称） ---------- */
.range-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;}
.range-figure{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-soft);position:relative;}
.range-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.range-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 20px;
  background:linear-gradient(0deg,rgba(12,10,30,.85),rgba(12,10,30,0));
  color:#E9E6FA;font-size:13px;
}
.range-text{margin-top:24px;color:var(--text-2);font-size:16px;}
.step-list{margin-top:8px;}
.step-item{
  display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line);
}
.step-item:first-child{padding-top:0;}
.step-item:last-child{border-bottom:0;}
.step-num{
  flex:0 0 auto;font-size:15px;font-weight:700;color:var(--brand);
  background:var(--brand-soft);border-radius:10px;width:42px;height:42px;
  display:grid;place-items:center;letter-spacing:.5px;
}
.step-body h3{font-size:17px;margin-bottom:6px;}
.step-body p{color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- 更新流程（深底横排） ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-item{
  position:relative;padding:26px 22px;
  border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-card);
  background:rgba(255,255,255,.03);transition:all .24s ease;
}
.flow-item:hover{border-color:rgba(108,76,241,.6);transform:translateY(-2px);background:rgba(108,76,241,.1);}
.flow-idx{
  font-size:13px;font-weight:700;letter-spacing:1.4px;color:var(--accent);
}
.flow-item h3{font-size:17px;color:#fff;margin:12px 0 8px;}
.flow-item p{font-size:14px;color:#B9B4D8;line-height:1.8;}

/* ---------- 精选板块卡片 ---------- */
.pick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.pick-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-soft);transition:all .24s ease;display:block;
}
.pick-card:nth-child(2){margin-top:28px;}
.pick-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(28,20,80,.14);border-color:rgba(108,76,241,.34);}
.pick-thumb{overflow:hidden;}
.pick-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.pick-card:hover .pick-thumb img{transform:scale(1.03);}
.pick-body{padding:22px;}
.pick-cat{
  display:inline-block;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--radius-pill);padding:4px 11px;margin-bottom:12px;
}
.pick-body h3{font-size:17px;margin-bottom:10px;transition:color .2s ease;}
.pick-card:hover .pick-body h3{color:var(--brand);}
.pick-body p{color:var(--text-2);font-size:14px;line-height:1.8;}
.pick-foot{
  display:flex;justify-content:space-between;align-items:center;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-2);
}
.pick-foot .more{color:var(--brand);font-weight:600;}

/* ---------- 适合人群 ---------- */
.who-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);padding:44px;
  display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;
}
.who-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.who-tag{
  font-size:13px;color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(108,76,241,.18);border-radius:var(--radius-pill);padding:6px 14px;
}
.who-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);}
.who-item:last-child{border-bottom:0;padding-bottom:0;}
.who-item:first-child{padding-top:0;}
.who-check{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  background:rgba(0,214,168,.14);color:#0A7C63;display:grid;place-items:center;
  font-size:13px;font-weight:700;margin-top:4px;
}
.who-item h3{font-size:16px;margin-bottom:4px;}
.who-item p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:all .24s ease;
}
.faq-item.is-open{background:var(--brand-soft);border-color:rgba(108,76,241,.3);box-shadow:var(--shadow-soft);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  position:relative;
}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid rgba(108,76,241,.35);color:var(--brand);
  display:grid;place-items:center;font-size:15px;line-height:1;transition:transform .24s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a-inner{padding:0 24px 22px;color:var(--text-2);font-size:15px;line-height:1.85;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#141130 0%,#241C5C 100%);
  border-radius:24px;padding:52px 48px;color:#fff;
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
  box-shadow:var(--shadow-deep);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.55),rgba(108,76,241,0) 70%);
}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);color:#fff;position:relative;}
.cta-band p{color:#B9B4D8;margin-top:14px;font-size:15px;position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;}
.cta-facts{margin-top:20px;display:flex;flex-wrap:wrap;gap:18px;position:relative;}
.cta-facts span{font-size:13px;color:#8A85AE;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9B4D8;padding:72px 0 28px;border-top:1px solid rgba(108,76,241,.4);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px;}
.footer-desc{font-size:14px;line-height:1.9;color:#9E98C4;max-width:320px;}
.footer-title{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:#B9B4D8;}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:#8A85AE;
}
.to-top{color:#CFCBE8;}
.to-top:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .range-grid{grid-template-columns:1fr;gap:36px;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .pick-grid{grid-template-columns:repeat(2,1fr);}
  .pick-card:nth-child(2){margin-top:0;}
  .who-wrap{grid-template-columns:1fr;gap:32px;padding:34px;}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .sec{padding:52px 0;}
  .sec-head{margin-bottom:32px;}
  .nav-wrap{height:64px;gap:14px;}
  .brand-text{font-size:15px;}
  .chip{padding:7px 13px;font-size:13px;}
  .nav-cta{padding:8px 14px;font-size:13px;}
  .page-hero{padding:30px 0 52px;}
  .stats{grid-template-columns:repeat(2,1fr);transform:translateY(-28px);}
  .stat{padding:22px 18px;border-right:0;border-bottom:1px solid rgba(255,255,255,.09);}
  .stat:nth-child(odd){border-right:1px solid rgba(255,255,255,.09);}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0;}
  .flow{grid-template-columns:1fr;}
  .pick-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .hero-h1{font-size:26px;}
  .stat-num{font-size:26px;}
  .who-wrap{padding:24px;}
  .cta-band{padding:32px 22px;}
}

/* roulang page: category3 */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#EFEBFF;
  --signal:#00D6A8;
  --accent:#C8F24E;
  --ink:#0C0A1E;
  --ink-2:#141130;
  --ink-3:#08061A;
  --mist:#F7F6FC;
  --white:#FFFFFF;
  --text:#1B1830;
  --muted:#6C6885;
  --line:#E6E3F5;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-pill:999px;
  --shadow-soft:0 6px 24px rgba(28,20,80,.08);
  --shadow-deep:0 8px 30px rgba(0,0,0,.35);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'Inter','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;}
h1{font-size:28px;}
h2{font-size:22px;}
h3{font-size:17px;}
p{margin:0 0 16px;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid rgba(108,76,241,.4);
  outline-offset:2px;
  border-radius:6px;
}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section-mist{background:var(--mist);}
.section-white{background:var(--white);}
.section-dark{background:var(--ink);color:#CFCBE8;}
.section-dark h2,.section-dark h3{color:#fff;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--brand);background:var(--brand-soft);
  padding:6px 14px;border-radius:var(--radius-pill);
  margin-bottom:18px;text-transform:uppercase;
}
.eyebrow-light{background:rgba(108,76,241,.18);color:#C3B4FF;}

.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{font-size:30px;margin-bottom:14px;}
.sec-head p{color:var(--muted);font-size:16.5px;margin:0;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,10,30,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#6C4CF1 0%,#00D6A8 100%);
  display:grid;place-items:center;flex:0 0 auto;
}
.pixgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:3px;width:16px;height:16px;}
.pixgrid span{background:var(--ink);border-radius:2px;}
.brand-text{color:#fff;font-weight:700;font-size:16px;letter-spacing:.01em;white-space:nowrap;}
.brand:hover .brand-text{color:#C3B4FF;}

.nav-chips{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;scrollbar-width:none;}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  padding:8px 15px;border-radius:var(--radius-pill);
  font-size:14px;color:#CFCBE8;border:1px solid transparent;
  white-space:nowrap;transition:all .2s ease;
}
.chip:hover{color:#fff;background:rgba(255,255,255,.07);}
.chip.is-active{background:var(--brand-soft);color:#4B32C9;border-color:var(--brand);font-weight:600;}

.nav-cta{
  flex:0 0 auto;padding:10px 18px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  white-space:nowrap;transition:all .22s ease;
}
.nav-cta:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 8px 20px rgba(108,76,241,.42);}
.nav-cta:active{transform:translateY(0);}

/* ---------- Breadcrumb ---------- */
.breadcrumb{background:var(--mist);border-bottom:1px solid var(--line);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:14px 0;font-size:13.5px;color:var(--muted);}
.breadcrumb a{color:var(--brand);}
.breadcrumb a:hover{color:var(--brand-hover);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:#BFB9DA;}
.breadcrumb [aria-current]{color:var(--text);font-weight:600;}

/* ---------- Category hero ---------- */
.cat-hero{
  position:relative;
  background:#0C0A1E url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:72px 0 68px;
  overflow:hidden;
}
.cat-hero::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(9,7,26,.94) 0%,rgba(12,10,30,.86) 46%,rgba(20,17,48,.72) 100%);
}
.cat-hero::before{
  content:'';position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:22px 22px;opacity:.35;
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero h1{color:#fff;font-size:34px;margin-bottom:16px;}
.cat-hero h1 em{font-style:normal;color:var(--accent);}
.cat-hero .lead{color:#BEB8DE;font-size:17px;max-width:720px;margin-bottom:28px;}
.cat-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.cat-tag{
  font-size:12.5px;color:#C3B4FF;background:rgba(108,76,241,.18);
  border:1px solid rgba(108,76,241,.42);
  padding:6px 14px;border-radius:var(--radius-pill);
}
.cat-stats{display:flex;flex-wrap:wrap;gap:14px;}
.cat-stat{
  min-width:168px;padding:16px 20px;border-radius:var(--radius-card);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(4px);
}
.cat-stat strong{display:block;font-family:'Inter',system-ui,sans-serif;font-size:26px;font-weight:800;color:var(--signal);line-height:1.2;}
.cat-stat span{font-size:12.5px;color:#A9A4C8;}

/* ---------- Intro ---------- */
.intro-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.intro-grid h2{margin-bottom:18px;}
.intro-grid p{color:var(--muted);font-size:16.5px;}
.intro-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-soft);}
.stat-row{display:flex;gap:36px;margin-top:28px;padding-top:26px;border-top:1px solid var(--line);}
.stat-row .stat strong{display:block;font-family:'Inter',system-ui,sans-serif;font-size:28px;font-weight:800;color:var(--brand);line-height:1.15;}
.stat-row .stat span{font-size:13px;color:var(--muted);}

/* ---------- Topic list ---------- */
.topic-list{display:flex;flex-direction:column;gap:16px;}
.topic-item{
  display:flex;gap:24px;padding:26px 28px;
  background:var(--mist);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:all .25s ease;
}
.topic-item:hover{background:#fff;border-color:#C9BEF8;box-shadow:var(--shadow-soft);transform:translateX(4px);}
.topic-num{
  flex:0 0 auto;width:52px;height:52px;border-radius:14px;
  background:var(--accent);color:#0C0A1E;
  display:grid;place-items:center;
  font-family:'Inter',system-ui,sans-serif;font-size:19px;font-weight:800;
}
.topic-body h3{margin-bottom:8px;}
.topic-item:hover .topic-body h3{color:var(--brand);}
.topic-body p{color:var(--muted);font-size:15.5px;margin-bottom:14px;}
.topic-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:12px;color:var(--brand);background:var(--brand-soft);
  padding:4px 11px;border-radius:var(--radius-pill);
}
.tag-signal{color:#0B7A62;background:rgba(0,214,168,.16);}

/* ---------- Split blocks ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px;}
.split:last-child{margin-bottom:0;}
.split.reverse .split-media{order:2;}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-soft);}
.split-text h3{font-size:24px;margin-bottom:14px;}
.split-text p{color:var(--muted);font-size:16px;}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.check-list li{position:relative;padding-left:26px;font-size:15.5px;color:var(--text);}
.check-list li::before{
  content:'';position:absolute;left:0;top:9px;
  width:12px;height:12px;border-radius:4px;
  background:var(--brand-soft);border:2px solid var(--brand);
}
.split-note{
  margin-top:22px;padding:16px 20px;
  background:var(--brand-soft);border-left:4px solid var(--brand);
  border-radius:0 12px 12px 0;color:#3C3470;font-size:15px;
}

/* ---------- Filter chips ---------- */
.filter-chips{display:flex;gap:10px;overflow-x:auto;padding-bottom:8px;margin-bottom:36px;scrollbar-width:none;}
.filter-chips::-webkit-scrollbar{display:none;}
.fchip{
  padding:8px 17px;border-radius:var(--radius-pill);font-size:14px;
  color:#CFCBE8;border:1px solid rgba(255,255,255,.18);
  white-space:nowrap;transition:all .2s ease;cursor:pointer;background:transparent;
}
.fchip:hover{color:#fff;border-color:rgba(108,76,241,.85);}
.fchip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}

/* ---------- Dark cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.gcard{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.11);
  border-radius:var(--radius-card);overflow:hidden;
  transition:all .25s ease;
}
.gcard:hover{border-color:rgba(108,76,241,.8);transform:translateY(-2px);box-shadow:var(--shadow-deep);}
.gcard-imgwrap{overflow:hidden;}
.gcard img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.gcard:hover img{transform:scale(1.03);}
.gcard-body{padding:20px 22px 22px;}
.gcard-body h3{font-size:17px;line-height:1.45;margin-bottom:10px;transition:color .2s ease;}
.gcard:hover .gcard-body h3{color:#B9A7FF;}
.gcard-body p{color:#A9A4C8;font-size:14.5px;line-height:1.75;margin:0;}
.gcard-meta{
  display:flex;justify-content:space-between;align-items:center;
  font-size:12.5px;color:#8C87AE;margin-top:16px;padding-top:14px;
  border-top:1px solid rgba(255,255,255,.08);
}
.gcard-meta .gcat{color:var(--signal);}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:all .22s ease;
}
.faq-item:hover{border-color:#C9BEF8;}
.faq-item[open]{background:#FBFAFF;border-color:#D9D2FA;}
.faq-q{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 58px 20px 26px;
  font-size:17px;font-weight:600;color:var(--text);
  transition:color .2s ease;
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q::before{
  content:'';position:absolute;left:0;top:18px;bottom:18px;width:3px;
  border-radius:0 3px 3px 0;background:transparent;transition:background .2s ease;
}
.faq-item[open] .faq-q{color:var(--brand);}
.faq-item[open] .faq-q::before{background:var(--brand);}
.faq-q::after{
  content:'+';position:absolute;right:26px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:#B0AACB;line-height:1;transition:color .2s ease;
}
.faq-item[open] .faq-q::after{content:'−';color:var(--brand);}
.faq-a{padding:0 26px 22px 26px;color:var(--muted);font-size:15.5px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-grid{display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:start;}
.cta-copy h2{font-size:30px;margin-bottom:18px;}
.cta-copy p{color:#A9A4C8;font-size:16.5px;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-points li{position:relative;padding-left:28px;color:#CFCBE8;font-size:15.5px;}
.cta-points li::before{
  content:'';position:absolute;left:0;top:9px;width:10px;height:10px;
  border-radius:3px;background:var(--accent);
}
.cta-form{
  background:#fff;border-radius:var(--radius-card);padding:30px 28px;
  box-shadow:var(--shadow-deep);
}
.cta-form h3{font-size:20px;margin-bottom:6px;}
.cta-form .form-sub{font-size:14px;color:var(--muted);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;
  background:var(--mist);border:1px solid var(--line);
  border-radius:var(--radius-btn);font-size:15px;
  transition:all .2s ease;-webkit-appearance:none;appearance:none;
}
.field textarea{min-height:104px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:#A9A4C4;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(108,76,241,.16);
}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  width:100%;padding:14px 24px;border:0;cursor:pointer;
  background:var(--brand);color:#fff;font-size:16px;font-weight:600;
  border-radius:var(--radius-btn);transition:all .22s ease;
}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 10px 26px rgba(108,76,241,.38);}
.btn-primary:active{transform:translateY(0);}
.form-msg{
  display:none;margin-top:16px;padding:12px 16px;
  background:rgba(0,214,168,.12);border:1px solid rgba(0,214,168,.45);
  border-radius:var(--radius-btn);color:#0B7A62;font-size:14.5px;
}
.form-msg.show{display:block;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-3);color:#B9B4D8;padding:72px 0 0;border-top:1px solid rgba(108,76,241,.35);}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:44px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;color:#fff;font-weight:700;font-size:16px;}
.footer-desc{font-size:14.5px;line-height:1.85;color:#9E98C2;margin:0;max-width:340px;}
.footer-title{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:#B9B4D8;}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.09);
  font-size:13.5px;color:#8C87AE;
}
.to-top{color:#C3B4FF;font-size:13.5px;}
.to-top:hover{color:var(--accent);}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .nav-wrap{flex-wrap:wrap;height:auto;padding:12px 0;gap:12px;}
  .nav-chips{order:3;width:100%;margin-left:0;padding-bottom:4px;}
  .nav-cta{margin-left:auto;}
  .intro-grid,.cta-grid{grid-template-columns:1fr;gap:36px;}
  .split,.split.reverse{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-media{order:0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:52px 0;}
  .cat-hero{padding:48px 0 44px;}
  .cat-hero h1{font-size:25px;}
  .cat-hero .lead{font-size:16px;}
  .sec-head h2{font-size:23px;}
  .sec-head{margin-bottom:30px;}
  .split-text h3{font-size:20px;}
  .topic-item{flex-direction:column;gap:16px;padding:22px 20px;}
  .stat-row{gap:24px;flex-wrap:wrap;}
  .cat-stat{flex:1 1 140px;min-width:0;}
  .faq-q{font-size:16px;padding:18px 52px 18px 20px;}
  .faq-a{padding:0 20px 20px 20px;}
  .cta-copy h2{font-size:23px;}
  .cta-form{padding:24px 20px;}
}
@media (max-width:639px){
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-text{font-size:15px;}
}

/* roulang page: category2 */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#EFEBFF;
  --accent:#C8F24E;
  --mint:#00D6A8;
  --ink:#0C0A1E;
  --ink-2:#141130;
  --mist:#F7F6FC;
  --card:#FFFFFF;
  --text:#1B1830;
  --sub:#6C6885;
  --line:#E6E3F5;
  --danger:#E2485F;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-soft:0 6px 24px rgba(28,20,80,.08);
  --shadow-deep:0 8px 30px rgba(0,0,0,.35);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:72px; --s9:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,Inter,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--mist);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .22s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid rgba(108,76,241,.4);outline-offset:2px;border-radius:6px;}

.container{max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--dark{background:var(--ink);color:#F2F0FF;}
.section--dark2{background:var(--ink-2);color:#F2F0FF;}
.section--light{background:var(--mist);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,10,30,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(108,76,241,.28);
}
.nav-wrap{display:flex;align-items:center;gap:24px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),#8B6BFF);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 14px rgba(108,76,241,.45);
}
.pixgrid{display:grid;grid-template-columns:repeat(2,6px);grid-template-rows:repeat(2,6px);gap:2px;}
.pixgrid span{background:var(--accent);border-radius:1px;display:block;}
.pixgrid span:nth-child(2){background:#FFFFFF;}
.pixgrid span:nth-child(3){background:#FFFFFF;}
.brand-text{color:#fff;font-weight:700;font-size:17px;letter-spacing:.5px;white-space:nowrap;}
.nav-chips{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  padding:7px 16px;border-radius:999px;font-size:14px;
  color:#C9C4E8;border:1px solid rgba(201,196,232,.28);
  background:transparent;white-space:nowrap;
  transition:all .22s ease;
}
.chip:hover{color:#fff;border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06);}
.chip.is-active{
  background:var(--brand-soft);color:var(--brand);
  border-color:var(--brand);font-weight:600;
  box-shadow:0 0 0 3px rgba(108,76,241,.16);
}
.nav-cta{
  flex:0 0 auto;
  padding:9px 20px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  transition:all .22s ease;box-shadow:0 4px 16px rgba(108,76,241,.35);
}
.nav-cta:hover{background:var(--brand-hover);transform:translateY(-1px);}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--sub);padding:14px 0;flex-wrap:wrap;}
.crumb a{color:var(--sub);}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{color:#C5C0DE;}
.crumb .now{color:var(--text);font-weight:600;}

/* ---------- 分类头部 Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background-color:var(--ink);
  background-image:linear-gradient(100deg,rgba(12,10,30,.94) 8%,rgba(20,17,48,.78) 52%,rgba(108,76,241,.35) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:#fff;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 4px);
  opacity:.6;
}
.cat-hero__inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  padding:64px 0 72px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(200,242,78,.12);color:var(--accent);
  border:1px solid rgba(200,242,78,.4);letter-spacing:.6px;
}
.cat-hero h1{
  font-size:40px;line-height:1.28;font-weight:700;margin:20px 0 16px;
  letter-spacing:.5px;
}
.cat-hero h1 .hl{color:var(--accent);}
.cat-hero__sub{font-size:17px;line-height:1.8;color:#C9C4E8;max-width:560px;}
.cat-hero__meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.meta-tag{
  font-size:12px;padding:5px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.22);color:#DAD6F2;
}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .22s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 20px rgba(108,76,241,.35);}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 10px 26px rgba(108,76,241,.45);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);}
.btn-line{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-line:hover{background:var(--brand-soft);transform:translateY(-1px);}

/* 浮动数据卡 */
.float-card{
  background:rgba(20,17,48,.86);
  border:1px solid rgba(108,76,241,.45);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-deep);
  backdrop-filter:blur(8px);
}
.float-card__title{font-size:13px;color:var(--mint);letter-spacing:1px;font-weight:600;}
.float-card__row{display:flex;align-items:baseline;justify-content:space-between;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.14);}
.float-card__row:last-child{border-bottom:0;padding-bottom:0;}
.float-card__num{font-size:26px;font-weight:700;color:var(--accent);font-family:Inter,system-ui,sans-serif;line-height:1.2;}
.float-card__label{font-size:13px;color:#C9C4E8;}

/* ---------- 通用标题 ---------- */
.sec-head{max-width:680px;margin-bottom:44px;}
.sec-kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.6px;
  color:var(--brand);text-transform:uppercase;margin-bottom:12px;
}
.sec-title{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:.3px;}
.sec-desc{margin-top:14px;color:var(--sub);font-size:16px;line-height:1.85;}
.section--dark .sec-title,.section--dark2 .sec-title{color:#fff;}
.section--dark .sec-desc,.section--dark2 .sec-desc{color:#B9B4D8;}
.section--dark .sec-kicker{color:var(--accent);}

/* ---------- 档期编号列表（不对称 8/4） ---------- */
.split-8-4{display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:start;}
.step-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-soft);}
.step-item{
  display:grid;grid-template-columns:64px 1fr;gap:18px;
  padding:28px 30px;border-bottom:1px solid var(--line);
  transition:background .22s ease;
}
.step-item:last-child{border-bottom:0;}
.step-item:hover{background:#FBFAFF;}
.step-no{
  font-family:Inter,system-ui,sans-serif;
  font-size:22px;font-weight:700;color:var(--accent);
  background:var(--ink);border-radius:10px;height:44px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:.5px;
}
.step-item h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.step-item p{color:var(--sub);font-size:15px;line-height:1.8;}
.step-item .mini-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.mini-tag{
  font-size:12px;padding:4px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-weight:600;
}
.mini-tag--mint{background:rgba(0,214,168,.12);color:#00A883;}

.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-soft);
}
.side-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.side-card__body{padding:22px;}
.side-card__body h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.side-card__body p{font-size:14px;color:var(--sub);line-height:1.8;}
.side-card__note{
  margin-top:16px;padding:12px 14px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;
}

/* ---------- 品类覆盖 5/7 反向 ---------- */
.split-5-7{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;}
.cover-figure{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  box-shadow:var(--shadow-soft);
}
.cover-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease;}
.cover-figure:hover img{transform:scale(1.03);}
.cover-figure__badge{
  position:absolute;left:16px;bottom:16px;
  background:rgba(12,10,30,.86);color:var(--accent);
  font-size:12px;font-weight:600;padding:6px 13px;border-radius:999px;
  border:1px solid rgba(200,242,78,.4);
}
.chip-group{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 24px;}
.tag-pill{
  font-size:13px;padding:6px 15px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--text);
  transition:all .2s ease;
}
.tag-pill:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:12px;
  font-size:15px;color:var(--sub);line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:9px;height:9px;border-radius:3px;background:var(--brand);
}
.check-list li strong{color:var(--text);font-weight:600;}

/* ---------- 数据条 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--ink-2);
  border:1px solid rgba(108,76,241,.35);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.stat-cell{padding:30px 26px;border-right:1px solid rgba(255,255,255,.08);}
.stat-cell:last-child{border-right:0;}
.stat-num{font-family:Inter,system-ui,sans-serif;font-size:34px;font-weight:700;color:var(--mint);line-height:1.15;}
.stat-num span{font-size:16px;margin-left:2px;color:var(--accent);}
.stat-label{font-size:13px;color:#B9B4D8;margin-top:8px;line-height:1.7;}

/* ---------- 流程步骤横排 ---------- */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:12px;}
.flow-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;box-shadow:var(--shadow-soft);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  position:relative;
}
.flow-card:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(28,20,80,.12);border-color:rgba(108,76,241,.4);}
.flow-card__no{
  position:absolute;top:-14px;left:26px;
  background:var(--accent);color:var(--ink);
  font-family:Inter,system-ui,sans-serif;font-weight:700;font-size:13px;
  padding:5px 12px;border-radius:999px;letter-spacing:.5px;
}
.flow-card h3{font-size:17px;font-weight:600;margin:14px 0 10px;}
.flow-card p{font-size:14px;color:var(--sub);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:920px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .22s ease,background .22s ease;
}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:22px 26px;font-size:17px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--brand);
  flex:0 0 auto;transition:transform .22s ease;
}
.faq-item[open]{background:#FBFAFF;border-color:rgba(108,76,241,.4);}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item__body{
  padding:0 26px 24px 26px;
  border-left:3px solid var(--brand);
  margin-left:26px;padding-left:22px;
  color:var(--sub);font-size:15px;line-height:1.85;
}

/* ---------- CTA / 联系 ---------- */
.cta-wrap{
  background:linear-gradient(130deg,#141130 0%,#1C1743 55%,#251E5C 100%);
  border:1px solid rgba(108,76,241,.4);
  border-radius:24px;padding:56px;
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;
  position:relative;overflow:hidden;
}
.cta-wrap::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border-radius:50%;background:radial-gradient(circle,rgba(108,76,241,.45),transparent 68%);
}
.cta-wrap h2{font-size:30px;line-height:1.35;color:#fff;font-weight:700;}
.cta-wrap p{color:#C4BFE4;font-size:15px;margin-top:16px;line-height:1.85;}
.cta-points{margin-top:26px;display:grid;gap:12px;}
.cta-points li{color:#DAD6F2;font-size:14px;padding-left:20px;position:relative;}
.cta-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;
  border-radius:2px;background:var(--mint);
}
.form-card{
  position:relative;z-index:2;
  background:#fff;border-radius:var(--radius-card);padding:30px;
  box-shadow:0 20px 50px rgba(0,0,0,.35);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;
  border:1px solid var(--line);background:var(--mist);
  font-size:15px;transition:all .2s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(108,76,241,.14);
}
.field .hint{font-size:12px;color:var(--sub);margin-top:6px;}
.form-card .btn-primary{width:100%;margin-top:6px;}
.form-tip{font-size:12px;color:var(--sub);margin-top:14px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#DAD6F2;padding:72px 0 0;border-top:1px solid rgba(108,76,241,.35);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;}
.footer-desc{font-size:14px;color:#B9B4D8;margin-top:16px;line-height:1.85;max-width:320px;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:#B9B4D8;transition:color .2s ease;}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 30px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:#8F8AB0;
}
.to-top{color:#DAD6F2;font-size:13px;}
.to-top:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .cat-hero__inner{grid-template-columns:1fr;gap:36px;padding:52px 0 60px;}
  .cat-hero h1{font-size:32px;}
  .split-8-4{grid-template-columns:1fr;gap:28px;}
  .split-5-7{grid-template-columns:1fr;gap:28px;}
  .flow{grid-template-columns:1fr 1fr;}
  .stat-band{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(2){border-right:0;}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid rgba(255,255,255,.08);}
  .cta-wrap{grid-template-columns:1fr;gap:36px;padding:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .nav-wrap{min-height:64px;gap:14px;}
  .brand-text{font-size:15px;}
  .nav-cta{padding:8px 14px;font-size:13px;}
  .cat-hero h1{font-size:27px;}
  .cat-hero__sub{font-size:15px;}
  .sec-title{font-size:23px;}
  .section{padding:52px 0;}
  .section--tight{padding:44px 0;}
  .flow{grid-template-columns:1fr;}
  .step-item{grid-template-columns:48px 1fr;padding:22px 20px;gap:14px;}
  .step-no{height:38px;font-size:18px;}
  .faq-item summary{padding:18px 20px;font-size:15px;}
  .faq-item__body{margin-left:20px;padding:0 20px 20px 16px;}
  .cta-wrap{padding:30px 22px;border-radius:18px;}
  .cta-wrap h2{font-size:23px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section--dark .sec-head,.section--light .sec-head{margin-bottom:30px;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:24px;}
  .stat-band{grid-template-columns:1fr;}
  .stat-cell{border-right:0;border-bottom:1px solid rgba(255,255,255,.08);}
  .stat-cell:last-child{border-bottom:0;}
  .btn{width:100%;}
  .cat-hero__actions{flex-direction:column;}
}

/* roulang page: category4 */
:root{
    --brand:#6C4CF1;
    --brand-hover:#5B3BE0;
    --brand-soft:#EFEBFF;
    --signal:#00D6A8;
    --accent:#C8F24E;
    --ink:#0C0A1E;
    --ink-2:#141130;
    --mist:#F7F6FC;
    --card:#FFFFFF;
    --text:#1B1830;
    --muted:#6C6885;
    --line:#E6E3F5;
    --radius-card:16px;
    --radius-btn:12px;
    --shadow-soft:0 6px 24px rgba(28,20,80,.08);
    --shadow-deep:0 8px 30px rgba(0,0,0,.35);
    --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px;
    --space-5:24px; --space-6:32px; --space-7:48px; --space-8:72px; --space-9:96px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'Inter','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    background:var(--mist);
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease;}
  a:hover{color:var(--brand);}
  h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  :focus-visible{outline:2px solid rgba(108,76,241,.45);outline-offset:2px;border-radius:6px;}
  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(12,10,30,.94);
    backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-wrap{display:flex;align-items:center;gap:24px;min-height:74px;}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand:hover{color:#fff;}
  .brand-mark{
    width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
    background:linear-gradient(135deg,var(--brand) 0%,#8B6BFF 100%);
    box-shadow:0 6px 16px rgba(108,76,241,.45);
  }
  .pixgrid{display:grid;grid-template-columns:1fr 1fr;gap:3px;width:16px;height:16px;}
  .pixgrid span{background:#fff;border-radius:1px;}
  .pixgrid span:nth-child(2){background:var(--accent);}
  .pixgrid span:nth-child(4){background:rgba(255,255,255,.55);}
  .brand-text{color:#fff;font-weight:700;font-size:17px;white-space:nowrap;}
  .nav-chips{
    display:flex;align-items:center;gap:8px;flex:1 1 auto;
    overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
    padding:4px 2px;
  }
  .nav-chips::-webkit-scrollbar{display:none;}
  .chip{
    display:inline-block;white-space:nowrap;
    padding:8px 16px;border-radius:999px;
    border:1px solid rgba(255,255,255,.16);
    color:#CFCBE8;font-size:14px;line-height:1.4;
    transition:all .2s ease;
  }
  .chip:hover{color:#fff;border-color:rgba(255,255,255,.42);background:rgba(255,255,255,.07);}
  .chip.is-active{
    background:var(--brand-soft);color:var(--brand);
    border-color:var(--brand);font-weight:600;
  }
  .nav-cta{
    flex:0 0 auto;background:var(--brand);color:#fff;
    padding:10px 20px;border-radius:var(--radius-btn);
    font-size:14px;font-weight:600;
    box-shadow:0 6px 18px rgba(108,76,241,.35);
  }
  .nav-cta:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);}

  /* ---------- breadcrumb ---------- */
  .crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
  .crumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:16px 0;font-size:14px;color:var(--muted);}
  .crumb a{color:var(--muted);}
  .crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
  .crumb .sep{color:#C6C1E0;}
  .crumb .current{color:var(--text);font-weight:600;}

  /* ---------- hero banner ---------- */
  .page-hero{
    position:relative;overflow:hidden;color:#fff;
    background:#0C0A1E url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(12,10,30,.95) 0%,rgba(12,10,30,.84) 46%,rgba(20,17,48,.62) 100%);
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 5px);
    opacity:.5;
  }
  .hero-inner{
    position:relative;z-index:2;
    display:grid;grid-template-columns:1.45fr .85fr;gap:48px;align-items:center;
    padding:60px 0 68px;
  }
  .badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.06em;
    background:rgba(200,242,78,.14);color:var(--accent);
    border:1px solid rgba(200,242,78,.32);
  }
  .badge .dot{width:6px;height:6px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 4px rgba(0,214,168,.18);}
  .page-hero h1{
    font-size:40px;margin-top:20px;line-height:1.28;
  }
  .page-hero h1 em{font-style:normal;color:var(--accent);}
  .hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:#CFCBE8;max-width:560px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 26px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
    transition:all .2s ease;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(108,76,241,.38);}
  .btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(108,76,241,.5);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.36);}
  .btn-ghost:hover{border-color:var(--signal);color:var(--signal);background:rgba(0,214,168,.08);}
  .btn-block{width:100%;}

  .hero-side{
    background:rgba(20,17,48,.72);
    border:1px solid rgba(108,76,241,.42);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-deep);
    padding:26px 24px;
    backdrop-filter:blur(6px);
  }
  .hero-side h2{font-size:15px;font-weight:600;color:#fff;letter-spacing:.02em;}
  .hero-side .side-label{font-size:12px;color:var(--signal);letter-spacing:.14em;font-weight:600;}
  .hero-side ul{margin-top:16px;display:grid;gap:12px;}
  .hero-side li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#CFCBE8;line-height:1.7;}
  .hero-side li span.tick{
    flex:0 0 auto;width:18px;height:18px;border-radius:6px;margin-top:3px;
    background:rgba(0,214,168,.16);border:1px solid rgba(0,214,168,.45);
    display:grid;place-items:center;font-size:11px;color:var(--signal);
  }
  .hero-side .side-foot{margin-top:20px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.16);font-size:13px;color:#9C97C0;}

  /* ---------- section shell ---------- */
  .section{padding:88px 0;}
  .section--mist{background:var(--mist);}
  .section--white{background:#fff;}
  .section--ink{background:var(--ink);color:#fff;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;}
  .section-head h2{font-size:30px;}
  .section-head p{margin-top:12px;color:var(--muted);font-size:15px;max-width:640px;line-height:1.85;}
  .section-num{
    font-size:13px;font-weight:700;letter-spacing:.2em;color:var(--brand);
    display:block;margin-bottom:12px;
  }
  .section--ink .section-num{color:var(--accent);}
  .section--ink .section-head p{color:#B9B4D8;}

  /* ---------- stat bar ---------- */
  .stat-bar{
    display:grid;grid-template-columns:repeat(4,1fr);
    border-top:1px solid rgba(255,255,255,.12);
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .stat-item{padding:30px 26px;border-right:1px solid rgba(255,255,255,.12);}
  .stat-item:last-child{border-right:none;}
  .stat-num{font-size:34px;font-weight:700;color:var(--signal);line-height:1.15;letter-spacing:-.01em;}
  .stat-num small{font-size:15px;font-weight:600;margin-left:2px;}
  .stat-label{margin-top:8px;font-size:13px;color:#B9B4D8;line-height:1.7;}

  /* ---------- range cards (asymmetric) ---------- */
  .range-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
  .range-card{
    grid-column:span 6;
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;display:flex;flex-direction:column;
    box-shadow:var(--shadow-soft);
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  }
  .range-card.wide{grid-column:span 7;}
  .range-card.narrow{grid-column:span 5;}
  .range-card:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(28,20,80,.13);border-color:rgba(108,76,241,.4);}
  .range-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
  .range-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
  .range-card:hover .range-media img{transform:scale(1.03);}
  .range-tag{
    position:absolute;left:14px;top:14px;
    padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;
    background:rgba(12,10,30,.78);color:var(--accent);
  }
  .range-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .range-body h3{font-size:19px;}
  .range-body p{font-size:15px;color:var(--muted);line-height:1.8;}
  .range-points{display:grid;gap:8px;margin-top:2px;}
  .range-points li{position:relative;padding-left:18px;font-size:14px;color:#4A4664;line-height:1.75;}
  .range-points li::before{
    content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
    background:var(--brand);transform:rotate(45deg);
  }
  .range-foot{margin-top:auto;padding-top:14px;font-size:13px;color:var(--muted);display:flex;justify-content:space-between;align-items:center;gap:12px;border-top:1px dashed var(--line);}

  /* ---------- flow steps ---------- */
  .flow-wrap{display:grid;grid-template-columns:.9fr 1.4fr;gap:56px;align-items:start;}
  .flow-list{display:grid;gap:0;}
  .flow-step{
    display:grid;grid-template-columns:64px 1fr;gap:22px;
    padding:26px 0;border-bottom:1px solid rgba(255,255,255,.12);
  }
  .flow-step:first-child{padding-top:0;}
  .flow-step:last-child{border-bottom:none;padding-bottom:0;}
  .flow-index{
    font-size:22px;font-weight:700;color:var(--accent);letter-spacing:.04em;line-height:1.2;
    font-variant-numeric:tabular-nums;
  }
  .flow-step h3{font-size:18px;color:#fff;}
  .flow-step p{margin-top:8px;font-size:15px;color:#B9B4D8;line-height:1.85;}
  .flow-note{
    background:rgba(20,17,48,.85);
    border:1px solid rgba(108,76,241,.4);
    border-radius:var(--radius-card);
    padding:26px 24px;box-shadow:var(--shadow-deep);
  }
  .flow-note h3{font-size:17px;color:#fff;}
  .flow-note p{margin-top:10px;font-size:14px;color:#B9B4D8;line-height:1.85;}
  .flow-note .meta-list{margin-top:18px;display:grid;gap:10px;border-top:1px dashed rgba(255,255,255,.16);padding-top:16px;}
  .flow-note .meta-list li{display:flex;justify-content:space-between;gap:16px;font-size:13px;color:#9C97C0;}
  .flow-note .meta-list strong{color:var(--signal);font-weight:600;}

  /* ---------- guarantee split ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
  .split-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-soft);aspect-ratio:4/3;background:var(--brand-soft);}
  .split-media img{width:100%;height:100%;object-fit:cover;}
  .split-body h2{font-size:30px;}
  .split-body p{margin-top:16px;color:var(--muted);font-size:15px;line-height:1.9;}
  .num-list{margin-top:26px;display:grid;gap:18px;}
  .num-item{display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:start;}
  .num-item .n{
    width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
    background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:15px;
    border:1px solid rgba(108,76,241,.22);
  }
  .num-item h3{font-size:17px;}
  .num-item p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.8;}

  /* ---------- faq ---------- */
  .faq-list{max-width:900px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    margin-bottom:14px;overflow:hidden;transition:all .25s ease;
  }
  .faq-item:hover{border-color:rgba(108,76,241,.32);}
  .faq-item[open]{background:var(--brand-soft);border-color:rgba(108,76,241,.45);box-shadow:0 10px 26px rgba(108,76,241,.12);}
  .faq-item summary{
    list-style:none;cursor:pointer;position:relative;
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 24px 20px 28px;font-size:17px;font-weight:600;color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:8px;
    display:grid;place-items:center;font-size:17px;font-weight:600;
    color:var(--brand);background:#fff;border:1px solid rgba(108,76,241,.3);
  }
  .faq-item[open] summary::after{content:"−";background:var(--brand);color:#fff;border-color:var(--brand);}
  .faq-item[open] summary::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
    background:var(--brand);border-radius:0 3px 3px 0;
  }
  .faq-body{padding:0 24px 24px 28px;font-size:15px;color:#4A4664;line-height:1.85;}

  /* ---------- cta + form ---------- */
  .cta-panel{
    display:grid;grid-template-columns:1.05fr .95fr;gap:48px;
    background:var(--ink-2);
    border:1px solid rgba(108,76,241,.35);
    border-radius:24px;
    padding:48px;
    color:#fff;
    box-shadow:var(--shadow-deep);
  }
  .cta-panel h2{font-size:30px;color:#fff;}
  .cta-panel .lead{margin-top:16px;font-size:15px;color:#B9B4D8;line-height:1.9;}
  .cta-points{margin-top:26px;display:grid;gap:14px;}
  .cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:#CFCBE8;}
  .cta-points .k{
    flex:0 0 auto;width:22px;height:22px;border-radius:7px;margin-top:2px;
    background:rgba(200,242,78,.16);color:var(--accent);border:1px solid rgba(200,242,78,.36);
    display:grid;place-items:center;font-size:11px;font-weight:700;
  }
  .contact-lines{margin-top:28px;padding-top:22px;border-top:1px dashed rgba(255,255,255,.16);display:grid;gap:12px;}
  .contact-lines div{display:flex;justify-content:space-between;gap:16px;font-size:14px;color:#B9B4D8;}
  .contact-lines strong{color:#fff;font-weight:600;}

  .form-card{background:#fff;border-radius:var(--radius-card);padding:28px 26px;color:var(--text);box-shadow:var(--shadow-soft);}
  .form-card h3{font-size:18px;}
  .form-card .hint{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.75;}
  .field{margin-top:16px;}
  .field label{display:block;font-size:13px;font-weight:600;color:#4A4664;margin-bottom:7px;}
  .field input,.field select,.field textarea{
    width:100%;padding:12px 14px;border-radius:12px;
    background:var(--mist);border:1px solid var(--line);
    font-size:14px;color:var(--text);transition:all .2s ease;
  }
  .field textarea{min-height:104px;resize:vertical;line-height:1.75;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--brand);background:#fff;
    box-shadow:0 0 0 4px rgba(108,76,241,.14);
  }
  .field input::placeholder,.field textarea::placeholder{color:#A9A4C4;}
  .form-card .btn-primary{margin-top:20px;}
  .form-tip{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.7;}
  .form-msg{margin-top:12px;font-size:13px;color:var(--signal);font-weight:600;display:none;}
  .form-msg.show{display:block;}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink);color:#B9B4D8;padding-top:72px;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:#9C97C0;max-width:320px;}
  .footer-title{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
  .footer-links{display:grid;gap:11px;}
  .footer-links a{font-size:14px;color:#B9B4D8;}
  .footer-links a:hover{color:var(--accent);}
  .footer-bottom{
    border-top:1px solid rgba(108,76,241,.35);
    padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:14px;
    align-items:center;justify-content:space-between;font-size:13px;color:#8E89B4;
  }
  .to-top{color:#CFCBE8;font-weight:600;}
  .to-top:hover{color:var(--accent);}

  .back-top{
    position:fixed;right:22px;bottom:26px;z-index:70;
    width:44px;height:44px;border-radius:12px;border:none;cursor:pointer;
    background:var(--brand);color:#fff;font-size:16px;
    box-shadow:0 10px 24px rgba(108,76,241,.42);
    opacity:0;pointer-events:none;transition:all .25s ease;
  }
  .back-top.show{opacity:1;pointer-events:auto;}
  .back-top:hover{background:var(--brand-hover);transform:translateY(-2px);}

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .container{padding:0 24px;}
    .hero-inner{grid-template-columns:1fr;gap:34px;padding:48px 0 56px;}
    .page-hero h1{font-size:32px;}
    .section{padding:72px 0;}
    .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:34px;}
    .section-head h2{font-size:26px;}
    .split{grid-template-columns:1fr;gap:34px;}
    .flow-wrap{grid-template-columns:1fr;gap:34px;}
    .cta-panel{grid-template-columns:1fr;padding:36px 28px;gap:32px;}
    .cta-panel h2,.split-body h2{font-size:26px;}
    .range-card.wide,.range-card.narrow{grid-column:span 6;}
    .stat-bar{grid-template-columns:repeat(2,1fr);}
    .stat-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.12);}
    .stat-item:nth-child(odd){border-right:1px solid rgba(255,255,255,.12);}
    .stat-item:nth-last-child(-n+2){border-bottom:none;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:768px){
    .nav-wrap{min-height:64px;gap:14px;}
    .brand-text{font-size:15px;}
    .chip{padding:7px 13px;font-size:13px;}
    .nav-cta{padding:9px 15px;font-size:13px;}
    .page-hero h1{font-size:28px;}
    .hero-sub{font-size:15px;}
    .range-grid{gap:18px;}
    .range-card,.range-card.wide,.range-card.narrow{grid-column:span 12;}
    .flow-step{grid-template-columns:48px 1fr;gap:16px;}
    .stat-num{font-size:28px;}
    .faq-item summary{font-size:16px;padding:18px 18px 18px 22px;}
    .faq-body{padding:0 18px 20px 22px;}
    .back-top{right:14px;bottom:16px;}
  }
  @media (max-width:520px){
    .container{padding:0 18px;}
    .section{padding:56px 0;}
    .page-hero h1{font-size:26px;}
    .hero-actions .btn{width:100%;}
    .cta-panel{padding:28px 20px;border-radius:18px;}
    .form-card{padding:22px 18px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .stat-bar{grid-template-columns:1fr;}
    .stat-item{border-right:none !important;}
    .stat-item:nth-last-child(-n+2){border-bottom:1px solid rgba(255,255,255,.12);}
    .stat-item:last-child{border-bottom:none;}
  }