/* roulang page: index */
:root{
  --ink-deep:#241A4A;
  --brand:#4B2E9B;
  --violet:#6E4BFF;
  --violet-light:#B9A7FF;
  --cyan:#35D6B5;
  --amber:#FFB27A;
  --bg:#F8F6FC;
  --bg-soft:#F0ECFA;
  --card:#FFFFFF;
  --ink:#1C1830;
  --text:#4A445E;
  --muted:#7A7390;
  --line:#E5DFF3;
  --grad:linear-gradient(135deg,#6E4BFF 0%,#4B2E9B 100%);
  --grad-soft:linear-gradient(135deg,rgba(110,75,255,.14),rgba(53,214,181,.14));
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --sh-card:0 8px 24px rgba(36,26,74,.08);
  --sh-strong:0 18px 48px rgba(36,26,74,.12);
  --sh-hover:0 24px 64px rgba(36,26,74,.18);
  --ease:.22s cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--cyan);}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:0;}
h1{font-size:clamp(2.1rem,4vw,3.5rem);line-height:1.15;}
h2{font-size:clamp(1.5rem,2.4vw,2.15rem);line-height:1.25;}
h3{font-size:1.25rem;line-height:1.35;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(110,75,255,.4);outline-offset:2px;border-radius:6px;}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--soft{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand);background:#fff;border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad);}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-shell{
  max-width:1240px;margin:0 auto;padding:0 24px;
  height:76px;display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  background:var(--grad);
  display:grid;place-items:center;color:#fff;font-size:17px;
  box-shadow:0 8px 20px rgba(110,75,255,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.02em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text);
  transition:background var(--ease),color var(--ease);
  white-space:nowrap;
}
.nav-link:hover{background:var(--bg-soft);color:var(--brand);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,var(--violet),var(--cyan));
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.command-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:300px;height:42px;padding:0 12px;
  background:var(--bg);border:1px solid var(--line);border-radius:12px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.command-search i{color:var(--muted);font-size:13px;}
.command-search input{
  flex:1;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);min-width:0;
}
.command-search input::placeholder{color:var(--muted);}
.command-search:focus-within{
  background:#fff;border-color:var(--violet-light);
  box-shadow:0 0 0 4px rgba(110,75,255,.14);
}
.kbd{
  font-size:11px;color:var(--muted);background:#fff;
  border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;line-height:1.6;font-family:ui-monospace,monospace;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-brand{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(75,46,155,.26);}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(75,46,155,.34);filter:brightness(1.05);}
.btn-brand:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--violet-light);}
.btn-ghost:hover{background:var(--bg-soft);color:var(--brand);transform:translateY(-2px);}
.btn-light-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4);}
.btn-light-ghost:hover{background:rgba(255,255,255,.2);color:#fff;}
.btn-nav{height:42px;padding:0 20px;font-size:14px;border-radius:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:12px;align-items:center;justify-content:center;
  padding:0;cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);
  position:relative;content:"";transition:transform var(--ease);
}
.nav-toggle span::before{position:absolute;top:-6px;left:0;}
.nav-toggle span::after{position:absolute;top:6px;left:0;}
.mobile-nav{
  display:none;border-top:1px solid var(--line);
  background:#fff;padding:16px 24px 22px;
}
.mobile-nav.open{display:block;}
.mobile-nav a{
  display:flex;align-items:center;min-height:48px;
  padding:0 14px;border-radius:12px;color:var(--text);
  font-size:15px;font-weight:500;
}
.mobile-nav a:hover,.mobile-nav a.active{background:var(--bg-soft);color:var(--brand);}
.mobile-nav .command-search{width:100%;margin-bottom:14px;}
.mobile-nav .btn{width:100%;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:76px 0 88px;
  background:linear-gradient(180deg,#F8F6FC 0%,#F2EEFB 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.13;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;top:-220px;right:-180px;
  width:640px;height:640px;pointer-events:none;
  background:radial-gradient(circle,rgba(110,75,255,.26),rgba(110,75,255,0) 66%);
}
.hero .shell{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.32fr 1fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--brand);
  box-shadow:var(--sh-card);margin-bottom:22px;
}
.hero-badge i{color:var(--cyan);}
.hero h1{margin-bottom:20px;}
.hero h1 .hl{
  background:linear-gradient(120deg,#6E4BFF,#35D6B5);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  font-size:17px;line-height:1.85;color:var(--text);
  max-width:560px;margin-bottom:30px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.stat-row{display:flex;flex-wrap:wrap;gap:14px;}
.stat{
  display:flex;flex-direction:column;gap:2px;
  padding:12px 20px;border-radius:16px;
  background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh-card);min-width:132px;
}
.stat b{
  font-size:20px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.3;
}
.stat span{font-size:12px;color:var(--muted);line-height:1.5;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-strong);aspect-ratio:16/11;background:#2A1F55;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(75,46,155,.42) 0%,rgba(36,26,74,.14) 46%,rgba(53,214,181,.22) 100%);
}
.float-card{
  position:absolute;right:-12px;bottom:-22px;
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:14px 18px;box-shadow:var(--sh-strong);max-width:290px;
}
.float-card .ic{
  width:38px;height:38px;flex-shrink:0;border-radius:11px;
  display:grid;place-items:center;color:#fff;background:var(--grad);font-size:15px;
}
.float-card strong{display:block;font-size:14px;color:var(--ink);line-height:1.4;}
.float-card span{display:block;font-size:12px;color:var(--muted);line-height:1.5;}
.float-pill{
  position:absolute;left:-14px;top:22px;
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.96);
  border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;font-size:12px;font-weight:600;color:var(--brand);
  box-shadow:var(--sh-card);
}
.float-pill i{color:var(--amber);}

/* ============ 三步上手 ============ */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;position:relative;}
.step-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);padding:30px 26px;
  box-shadow:var(--sh-card);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--violet-light);}
.step-num{
  font-size:13px;font-weight:700;color:var(--brand);
  letter-spacing:.12em;font-variant-numeric:tabular-nums;
  margin-bottom:18px;display:block;
}
.step-ic{
  width:52px;height:52px;border-radius:16px;
  background:var(--grad-soft);border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand);font-size:20px;
  margin-bottom:18px;
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--text);margin-bottom:16px;line-height:1.75;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.text-link:hover{color:var(--cyan);border-bottom-color:var(--cyan);}
.steps-foot{margin-top:30px;font-size:15px;color:var(--muted);}
.steps-foot a{font-weight:600;border-bottom:1px solid var(--violet-light);}

/* ============ 检查清单 ============ */
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 22px;box-shadow:var(--sh-card);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.check-card:hover{border-color:var(--violet-light);box-shadow:var(--sh-strong);transform:translateY(-3px);}
.check-card .tick{
  width:34px;height:34px;border-radius:50%;
  background:rgba(53,214,181,.14);color:#1BA98C;
  display:grid;place-items:center;font-size:14px;margin-bottom:16px;
}
.check-card h3{font-size:17px;margin-bottom:8px;}
.check-card p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.7;}

/* ============ 场景示例 ============ */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;}
.case-card{
  display:grid;grid-template-columns:172px 1fr;gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--violet-light);}
.case-thumb{aspect-ratio:4/3;border-radius:var(--r-sm);overflow:hidden;background:var(--bg-soft);}
.case-thumb img{width:100%;height:100%;object-fit:cover;}
.case-body{display:flex;flex-direction:column;gap:10px;min-width:0;}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 11px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.7;
  background:var(--bg-soft);color:var(--brand);
}
.tag--cyan{background:rgba(53,214,181,.14);color:#149C81;}
.tag--amber{background:rgba(255,178,122,.2);color:#B96718;}
.case-card h3{font-size:18px;}
.case-card p{font-size:14.5px;color:var(--text);margin:0;line-height:1.7;}
.mini-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:2px;}
.mini-stat{
  font-size:12px;color:var(--brand);font-weight:600;
  border:1px solid var(--line);border-radius:999px;padding:4px 12px;
  background:#fff;
}
.mini-stat b{font-variant-numeric:tabular-nums;margin-right:4px;}

/* ============ 最新信息 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.news-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  height:100%;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--violet-light);}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.05);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:16.5px;line-height:1.5;}
.news-body h3 a{color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a:hover{color:var(--brand);}
.news-desc{
  font-size:14px;color:var(--muted);margin:0;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted);
}
.news-meta .go{color:var(--brand);font-weight:600;font-size:13px;}
.empty-state{
  border:1px dashed var(--violet-light);background:var(--bg-soft);
  border-radius:var(--r-md);padding:52px 28px;text-align:center;
}
.empty-state i{font-size:26px;color:var(--violet);margin-bottom:14px;}
.empty-state p{color:var(--muted);margin:0 0 18px;font-size:15px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  position:relative;background:#fff;border:1px solid var(--line) !important;
  border-radius:16px !important;overflow:hidden;margin-bottom:14px;
  box-shadow:var(--sh-card);transition:border-color var(--ease),box-shadow var(--ease);
}
.accordion-item:hover{border-color:var(--violet-light) !important;}
.accordion-item:has(.accordion-button:not(.collapsed))::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:0 4px 4px 0;
  background:linear-gradient(180deg,var(--violet),var(--cyan));z-index:3;
}
.accordion-button{
  background:#fff;color:var(--ink);font-size:16px;font-weight:600;
  padding:22px 24px;box-shadow:none !important;border-radius:16px !important;
  line-height:1.6;
}
.accordion-button:not(.collapsed){color:var(--brand);background:#fff;}
.accordion-button::after{
  flex-shrink:0;width:12px;height:12px;margin-left:auto;
  background-image:none !important;
  border-right:2px solid var(--violet);border-bottom:2px solid var(--violet);
  transform:rotate(45deg);transition:transform var(--ease);border-radius:1px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);}
.accordion-body{padding:0 24px 24px;color:var(--text);font-size:15px;line-height:1.78;}
.faq-note{text-align:center;margin-top:26px;font-size:14.5px;color:var(--muted);}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(120deg,#241A4A 0%,#4B2E9B 62%,#6E4BFF 100%);
  padding:48px 44px;display:grid;grid-template-columns:1.5fr auto;
  gap:36px;align-items:center;box-shadow:var(--sh-strong);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 12% 18%,rgba(255,255,255,.16),transparent 42%),
    radial-gradient(circle at 82% 84%,rgba(53,214,181,.26),transparent 46%);
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.82);margin:0;font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--ink-deep);color:rgba(255,255,255,.72);
  padding:64px 0 0;margin-top:8px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--violet),var(--cyan),var(--amber));
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.foot-brand .brand-mark{box-shadow:none;}
.foot-brand strong{font-size:16px;color:#fff;display:block;line-height:1.3;}
.foot-brand span{font-size:11px;color:rgba(255,255,255,.5);}
.foot-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:330px;margin:0;}
.site-footer h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;}
.foot-list li{margin-bottom:10px;}
.foot-list a{font-size:14px;color:rgba(255,255,255,.66);}
.foot-list a:hover{color:var(--cyan);}
.foot-contact li{font-size:14px;color:rgba(255,255,255,.66);margin-bottom:10px;display:flex;gap:10px;align-items:flex-start;}
.foot-contact i{color:var(--cyan);margin-top:6px;font-size:12px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}
.foot-bottom a{color:rgba(255,255,255,.6);}
.foot-bottom a:hover{color:var(--cyan);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .command-search{width:240px;}
  .nav-shell{gap:16px;}
  .nav-link{padding:10px 11px;font-size:14.5px;}
}
@media (max-width:1100px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .command-search{width:260px;}
  .check-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:992px){
  .section{padding:64px 0;}
  .hero{padding:52px 0 68px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-sub{max-width:none;}
  .hero-visual{order:2;}
  .hero-figure{aspect-ratio:16/10;max-height:340px;}
  .float-pill{left:10px;top:12px;font-size:11.5px;}
  .float-card{right:10px;bottom:-18px;max-width:250px;padding:12px 14px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .case-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;gap:26px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 180px;}
}
@media (max-width:768px){
  .nav-shell{height:70px;gap:10px;padding:0 18px;}
  .brand-mark{width:38px;height:38px;border-radius:12px;font-size:15px;}
  .brand-text strong{font-size:14.5px;}
  .brand-text em{font-size:10px;}
  .command-search{display:none;}
  .nav-actions .btn-nav{display:none;}
  .shell{padding:0 18px;}
  .steps-grid{grid-template-columns:1fr;gap:18px;}
  .steps-grid::before{
    content:"";position:absolute;left:26px;top:24px;bottom:24px;width:2px;
    background:linear-gradient(180deg,var(--violet),var(--cyan));opacity:.35;
  }
  .step-card{padding:24px 22px 24px 24px;}
  .check-grid{grid-template-columns:1fr;}
  .case-card{grid-template-columns:1fr;gap:18px;}
  .case-thumb{aspect-ratio:16/9;}
  .news-grid{grid-template-columns:1fr;}
  .news-head{margin-bottom:28px;}
  .acc?{}
  .accordion-button{font-size:15px;padding:18px 18px;}
  .accordion-body{padding:0 18px 20px;font-size:14.5px;}
  .foot-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px;}
  .foot-about{max-width:none;}
  .site-footer{padding-top:48px;}
  .cta-band{border-radius:22px;padding:32px 22px;}
  .hero-btns .btn{flex:1 1 100%;}
  .stat{flex:1 1 auto;}
}
@media (max-width:520px){
  .section{padding:52px 0;}
  .hero{padding:44px 0 60px;}
  .hero-badge{font-size:12px;padding:6px 12px;}
  .hero-sub{font-size:15.5px;}
  .stat-row{gap:10px;}
  .stat{min-width:0;flex:1 1 46%;padding:10px 14px;}
  .stat b{font-size:17px;}
  .float-card{max-width:220px;right:6px;}
  .float-card .ic{width:32px;height:32px;font-size:13px;}
  .float-card strong{font-size:13px;}
  .float-card span{font-size:11px;}
  .cta-actions .btn{flex:1 1 100%;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .btn{height:46px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
}

/* roulang page: article */
:root{
  --ink:#241A4A;
  --brand:#4B2E9B;
  --violet:#6E4BFF;
  --violet-soft:#B9A7FF;
  --mint:#35D6B5;
  --apricot:#FFB27A;
  --bg:#F8F6FC;
  --bg-soft:#F0ECFA;
  --card:#FFFFFF;
  --text:#1C1830;
  --body:#4A445E;
  --muted:#7A7390;
  --line:#E5DFF3;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --sh-1:0 8px 24px rgba(36,26,74,.08);
  --sh-2:0 18px 48px rgba(36,26,74,.12);
  --sh-3:0 24px 64px rgba(36,26,74,.18);
  --grad:linear-gradient(135deg,#6E4BFF 0%,#4B2E9B 58%,#35D6B5 135%);
  --grad-soft:linear-gradient(135deg,rgba(110,75,255,.14),rgba(53,214,181,.14));
  --bs-body-font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--mint)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
:focus-visible{outline:3px solid rgba(110,75,255,.45);outline-offset:2px;border-radius:6px}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;height:76px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:15px;
  box-shadow:0 6px 18px rgba(75,46,155,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.4px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--body);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--bg-soft);color:var(--brand)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);
}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.command-search{
  position:relative;display:flex;align-items:center;
  width:300px;height:42px;
  border:1px solid var(--line);border-radius:12px;background:#fff;
  padding:0 10px 0 36px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.command-search .fa-magnifying-glass{position:absolute;left:13px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--muted)}
.command-search input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.command-search input::placeholder{color:var(--muted)}
.command-search kbd{
  flex:0 0 auto;font-size:11px;font-family:inherit;color:var(--muted);
  background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;margin-left:6px;
}
.command-search:focus-within{border-color:var(--violet);box-shadow:0 0 0 3px rgba(110,75,255,.16)}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:0;border-radius:var(--r-sm);
  background:var(--grad);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 10px 24px rgba(75,46,155,.26);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(75,46,155,.32);filter:brightness(1.06)}
.btn-cta:active{transform:translateY(0)}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;color:var(--brand);font-size:16px;
}
.menu-toggle:hover{background:var(--bg-soft)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 24px 22px}
.mobile-panel.open{display:block}
.mobile-panel .m-search{
  display:flex;align-items:center;gap:10px;height:48px;border:1px solid var(--line);
  border-radius:12px;padding:0 14px;margin-bottom:14px;background:var(--bg);
}
.mobile-panel .m-search i{color:var(--muted);font-size:14px}
.mobile-panel .m-search input{border:0;background:transparent;outline:none;width:100%;font-size:15px;color:var(--text)}
.mobile-panel .m-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:12px;
  font-size:15px;font-weight:500;color:var(--body);
}
.mobile-panel .m-link:hover{background:var(--bg-soft);color:var(--brand)}
.mobile-panel .m-link i{font-size:12px;color:var(--muted)}
.mobile-panel .btn-cta{width:100%;margin-top:12px;height:48px}

/* ============ breadcrumb ============ */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line)}
.crumb-list{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:16px 0;font-size:13px;color:var(--muted)}
.crumb-list li{display:flex;align-items:center;gap:8px;min-width:0}
.crumb-list li:not(:last-child)::after{content:"/";color:var(--line);font-size:12px}
.crumb-list a{color:var(--muted)}
.crumb-list a:hover{color:var(--violet)}
.crumb-list .current{color:var(--text);font-weight:600;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ article hero ============ */
.article-hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(720px 340px at 12% -10%,rgba(110,75,255,.16),transparent 70%),
    radial-gradient(600px 300px at 92% 0%,rgba(53,214,181,.16),transparent 72%),
    #fff;
  border-bottom:1px solid var(--line);
  padding:52px 0 46px;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.05;
}
.hero-inner{position:relative;z-index:1;max-width:900px;margin:0 auto}
.tag-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;
  background:var(--grad-soft);border:1px solid rgba(110,75,255,.24);
  color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.3px;
}
.tag-chip i{font-size:11px;color:var(--mint)}
.article-title{
  margin-top:18px;
  font-size:clamp(1.85rem,3.4vw,2.85rem);
  line-height:1.22;
  letter-spacing:-.2px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  margin-top:20px;font-size:13.5px;color:var(--muted);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--violet-soft);font-size:12px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}

.cover-wrap{max-width:900px;margin:34px auto 0;padding:0 24px}
.cover-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-2);border:1px solid var(--line);background:var(--bg-soft);
  aspect-ratio:16/9;
}
.cover-frame img{width:100%;height:100%;object-fit:cover}
.cover-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(36,26,74,0) 45%,rgba(36,26,74,.34) 100%);
}

/* ============ article layout ============ */
.article-shell{padding:56px 0 72px}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:48px;
  align-items:start;
}
.article-main{min-width:0;max-width:840px}
.toc-card{
  position:sticky;top:104px;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px;
  box-shadow:var(--sh-1);
}
.toc-card h2{
  font-size:13px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;
  color:var(--muted);margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.toc-card h2 i{color:var(--violet)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow:auto}
.toc-item a{
  display:block;padding:8px 12px;border-radius:10px;
  font-size:14px;line-height:1.5;color:var(--body);
  border-left:2px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.toc-item a:hover{background:var(--bg-soft);color:var(--brand);border-left-color:var(--violet)}
.toc-sub a{padding-left:26px;font-size:13px;color:var(--muted)}
.toc-tip{
  margin-top:16px;padding:12px 14px;border-radius:var(--r-sm);
  background:var(--bg-soft);font-size:12.5px;line-height:1.7;color:var(--muted);
}
.toc-tip a{font-weight:600}
.toc-mobile{display:none;margin-bottom:26px}
.toc-mobile summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;font-size:14px;font-weight:600;color:var(--text);
  box-shadow:var(--sh-1);
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary i{color:var(--violet);font-size:12px;transition:transform .2s ease}
.toc-mobile[open] summary i{transform:rotate(180deg)}
.toc-mobile .toc-list{padding:10px 0 0}

/* ============ article body ============ */
.article-body{
  font-size:16px;line-height:1.85;color:var(--body);
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px 44px;box-shadow:var(--sh-1);
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body strong{color:var(--text);font-weight:600}
.article-body h2{
  position:relative;padding-left:18px;
  font-size:clamp(1.32rem,2.1vw,1.72rem);
  margin:44px 0 16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:4px;background:var(--grad);
}
.article-body h3{font-size:1.25rem;font-weight:600;margin:32px 0 12px}
.article-body h4{font-size:1.05rem;font-weight:600;margin:24px 0 10px;color:var(--text)}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--mint)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.3em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em;line-height:1.8}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--bg-soft);border-left:4px solid var(--mint);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th{background:var(--bg-soft);color:var(--text);font-weight:600}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 16px;text-align:left}
.article-body img{border-radius:16px;margin:24px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:8px;text-align:center}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body code{
  background:var(--bg-soft);border-radius:6px;padding:2px 6px;
  font-size:.92em;color:var(--brand);
}
.article-body .tip,.article-body .notice{
  background:#FFF6EE;border-left:4px solid var(--apricot);
  border-radius:0 var(--r-sm) var(--r-sm) 0;padding:16px 20px;margin:24px 0;
}

/* empty state */
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:64px 32px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .ico{
  width:64px;height:64px;border-radius:20px;margin:0 auto 20px;
  background:var(--grad-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:24px;
}
.empty-state h2{font-size:1.35rem;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:24px}
.btn-primary-grad{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);border:0;
  background:var(--grad);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 12px 26px rgba(75,46,155,.26);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-primary-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 36px rgba(75,46,155,.34);filter:brightness(1.06)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  background:#fff;border:1px solid rgba(110,75,255,.42);color:var(--brand);
  font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-ghost:hover{background:var(--bg-soft);color:var(--brand);transform:translateY(-2px);border-color:var(--violet)}

/* ============ tags & back ============ */
.article-foot{
  margin-top:28px;padding:24px 26px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  box-shadow:var(--sh-1);
}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-row .label{font-size:13px;color:var(--muted)}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  background:var(--bg-soft);color:var(--brand);
  font-size:13px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.tag:hover{background:rgba(110,75,255,.18);color:var(--brand)}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand)}
.back-link:hover{color:var(--mint)}

/* ============ related ============ */
.related-block{margin-top:56px}
.section-head{margin-bottom:24px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:1.2px;color:var(--violet);
  text-transform:uppercase;margin-bottom:10px;
}
.section-head .eyebrow::before{
  content:"";width:24px;height:2px;border-radius:2px;background:var(--grad);
}
.section-head h2{font-size:clamp(1.4rem,2.2vw,1.9rem)}
.section-head p{color:var(--muted);font-size:14.5px;margin-top:8px}
.related-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.related-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--violet-soft)}
.related-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .related-thumb img{transform:scale(1.05)}
.related-info{padding:18px 20px 20px}
.related-info .cat{font-size:12px;font-weight:600;color:var(--violet)}
.related-info h3{font-size:1.02rem;line-height:1.5;margin:8px 0 10px;color:var(--text);font-weight:600}
.related-info .time{font-size:12.5px;color:var(--muted);display:inline-flex;align-items:center;gap:6px}

/* ============ cta strip ============ */
.cta-strip{
  position:relative;overflow:hidden;
  margin-top:56px;border-radius:var(--r-lg);
  background:linear-gradient(135deg,#241A4A 0%,#4B2E9B 62%,#6E4BFF 120%);
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--sh-2);
}
.cta-strip::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  opacity:.14;mix-blend-mode:screen;
}
.cta-strip::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-180px;
  background:radial-gradient(circle,rgba(53,214,181,.35),transparent 68%);
}
.cta-copy{position:relative;z-index:1;max-width:640px}
.cta-copy h2{color:#fff;font-size:clamp(1.35rem,2.3vw,1.85rem);margin-bottom:10px}
.cta-copy p{color:rgba(255,255,255,.78);font-size:14.5px;line-height:1.8}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-light-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);border:0;
  background:#fff;color:var(--brand);font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease;
}
.cta-actions .btn-light-solid:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(0,0,0,.22);color:var(--brand)}
.cta-actions .btn-outline-light2{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.42);color:#fff;
  font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.cta-actions .btn-outline-light2:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px)}

/* ============ footer ============ */
.site-footer{
  margin-top:0;
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:64px 0 26px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad);
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.foot-brand .brand-mark{box-shadow:0 6px 18px rgba(0,0,0,.35)}
.foot-brand strong{display:block;font-size:16px;color:#fff;font-weight:700;line-height:1.4}
.foot-brand span{display:block;font-size:11.5px;color:rgba(255,255,255,.5);letter-spacing:.4px;margin-top:3px}
.foot-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.site-footer h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;letter-spacing:.3px}
.foot-list{display:flex;flex-direction:column;gap:11px}
.foot-list a{font-size:14px;color:rgba(255,255,255,.68)}
.foot-list a:hover{color:var(--mint)}
.foot-contact{display:flex;flex-direction:column;gap:12px}
.foot-contact li{display:flex;gap:10px;font-size:13px;line-height:1.7;color:rgba(255,255,255,.62)}
.foot-contact i{color:var(--mint);font-size:12px;margin-top:5px}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12.5px;color:rgba(255,255,255,.45);
}

/* ============ responsive ============ */
@media (max-width:1199.98px){
  .command-search{width:230px}
  .nav-link{padding:9px 10px;font-size:14.5px}
  .header-inner{gap:16px}
}
@media (max-width:991.98px){
  .nav-links,.command-search{display:none}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-inner{height:68px}
  .article-shell{padding:40px 0 56px}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0}
  .article-side{display:none}
  .toc-mobile{display:block}
  .article-body{padding:28px 22px;border-radius:var(--r-md)}
  .article-hero{padding:38px 0 32px}
  .cover-wrap{padding:0 24px;margin-top:26px}
  .related-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:32px 28px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-about{max-width:none}
}
@media (max-width:575.98px){
  .shell{padding:0 18px}
  .brand-text strong{font-size:14.5px}
  .brand-text em{display:none}
  .article-title{font-size:1.6rem}
  .article-meta{font-size:12.5px;gap:8px 14px}
  .article-body{font-size:15.5px;padding:24px 18px}
  .article-body h2{margin-top:34px}
  .related-list{grid-template-columns:minmax(0,1fr)}
  .cta-strip{padding:26px 22px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions a{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;gap:8px}
  .cover-wrap{padding:0 18px}
  .article-foot{padding:20px}
  .empty-state{padding:44px 22px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category1 */
:root{
  --ink:#241A4A;
  --brand:#4B2E9B;
  --brand-bright:#6E4BFF;
  --brand-soft:#B9A7FF;
  --cyan:#35D6B5;
  --apricot:#FFB27A;
  --bg:#F8F6FC;
  --bg-soft:#F0ECFA;
  --card:#FFFFFF;
  --title:#1C1830;
  --text:#4A445E;
  --muted:#7A7390;
  --line:#E5DFF3;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --sh-1:0 8px 24px rgba(36,26,74,.08);
  --sh-2:0 18px 48px rgba(36,26,74,.12);
  --sh-3:0 24px 64px rgba(36,26,74,.18);
  --grad:linear-gradient(120deg,#6E4BFF 0%,#4B2E9B 58%,#35D6B5 145%);
  --grad-soft:linear-gradient(120deg,#EFE9FF 0%,#E6FBF6 100%);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;line-height:1.25}
h1{font-size:clamp(2.1rem,4vw,3.5rem);line-height:1.15;letter-spacing:-.015em}
h2{font-size:clamp(1.5rem,2.4vw,2.15rem);line-height:1.25}
h3{font-size:1.25rem;line-height:1.35;font-weight:600}
p{margin:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--cyan)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
:focus-visible{outline:3px solid rgba(110,75,255,.35);outline-offset:2px;border-radius:8px}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:16px;top:12px;z-index:2000;background:#fff;padding:10px 18px;border-radius:12px;box-shadow:var(--sh-2)}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--grad);
  display:grid;place-items:center;color:#fff;font-size:15px;
  box-shadow:0 8px 18px rgba(75,46,155,.28);flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:700;color:var(--title);white-space:nowrap}
.brand-text span{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.06em;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;font-size:15px;font-weight:500;
  color:var(--text);white-space:nowrap;transition:background .2s,color .2s;
}
.nav-link:hover{color:var(--brand);background:var(--bg-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  border-radius:2px;background:var(--grad);
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.command-search{
  display:flex;align-items:center;gap:8px;width:296px;height:42px;padding:0 12px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  transition:border-color .2s,box-shadow .2s;
}
.command-search i{color:var(--muted);font-size:13px}
.command-search input{flex:1;min-width:0;border:0;background:transparent;font-size:14px;color:var(--text);outline:none}
.command-search input::placeholder{color:var(--muted)}
.command-search kbd{
  font-family:inherit;font-size:11px;color:var(--muted);background:var(--bg-soft);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;line-height:1.6;
}
.command-search:focus-within{border-color:var(--brand-soft);box-shadow:0 0 0 3px rgba(110,75,255,.16)}
.icon-btn{
  width:42px;height:42px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--text);font-size:15px;
  transition:background .2s,color .2s,border-color .2s;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand-soft);background:var(--bg-soft)}
.menu-toggle{
  display:none;width:44px;height:44px;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--brand);font-size:16px;cursor:pointer;
}
.menu-toggle:hover{background:var(--bg-soft)}

/* ============ Buttons ============ */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:14px;font-size:15px;font-weight:600;
  cursor:pointer;text-align:center;border:1px solid transparent;
  transition:transform .2s,box-shadow .2s,filter .2s,background .2s,color .2s,border-color .2s;
}
.btn-brand{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(75,46,155,.24)}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);filter:brightness(1.06)}
.btn-brand:active{transform:translateY(0);box-shadow:0 6px 16px rgba(75,46,155,.22)}
.btn-ghost{background:#fff;border-color:var(--brand-soft);color:var(--brand)}
.btn-ghost:hover{background:var(--bg-soft);border-color:var(--brand-bright);color:var(--brand)}
.btn-brand.sm,.btn-ghost.sm{height:42px;padding:0 18px;font-size:14px;border-radius:12px}
.btn-brand.block,.btn-ghost.block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--brand);
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1.5px;
  text-decoration-color:rgba(110,75,255,.4);
}
.text-link:hover{color:var(--cyan);text-decoration-color:rgba(53,214,181,.55)}

/* ============ Breadcrumb ============ */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:22px 0 0;font-size:13px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{opacity:.45}
.crumbs .current{color:var(--brand);font-weight:600}

/* ============ Hero ============ */
.cat-hero{position:relative;overflow:hidden;padding:36px 0 68px}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.15;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(560px 320px at 12% 8%,rgba(110,75,255,.20),transparent 70%),
    radial-gradient(520px 300px at 88% 70%,rgba(53,214,181,.18),transparent 72%),
    linear-gradient(180deg,rgba(248,246,252,.55) 0%,rgba(248,246,252,.96) 88%);
}
.cat-hero .shell{position:relative;z-index:2}
.cat-hero-grid{display:grid;grid-template-columns:1.2fr .85fr;gap:56px;align-items:center;margin-top:26px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:12px;font-weight:600;
  letter-spacing:.1em;color:var(--brand);box-shadow:var(--sh-1);
}
.eyebrow i{color:var(--cyan);font-size:11px}
.cat-hero h1{margin-top:20px}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.85;color:var(--text);max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.fact-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.fact-chip{
  display:flex;align-items:center;gap:10px;padding:9px 16px;background:#fff;
  border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--muted);
  box-shadow:var(--sh-1);
}
.fact-chip b{font-size:16px;color:var(--title);font-weight:700;font-variant-numeric:tabular-nums}
.fact-chip .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.cat-hero-art{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3;background:var(--bg-soft)}
.cat-hero-art img{width:100%;height:100%;object-fit:cover}
.cat-hero-art::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(155deg,rgba(75,46,155,.55) 0%,rgba(110,75,255,.24) 45%,rgba(53,214,181,.12) 100%);
}
.hero-float{
  position:absolute;left:20px;bottom:20px;z-index:3;
  display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:16px;
  background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  box-shadow:var(--sh-2);
}
.hero-float .fi{
  width:36px;height:36px;border-radius:11px;background:var(--grad-soft);
  display:grid;place-items:center;color:var(--brand);font-size:14px;
}
.hero-float strong{display:block;font-size:14px;color:var(--title);line-height:1.3}
.hero-float span{font-size:12px;color:var(--muted)}

/* ============ Layout ============ */
.section{padding:0 0 72px}
.section-top{padding-top:8px}
.guide-layout{display:grid;grid-template-columns:284px minmax(0,1fr);gap:40px;align-items:start}

/* TOC */
.toc-card{
  position:sticky;top:100px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);
}
.toc-title{
  font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.14em;
  padding-bottom:12px;margin-bottom:10px;border-bottom:1px solid var(--line);
}
.toc-list li+li{margin-top:2px}
.toc-list a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:14px;color:var(--text);transition:background .2s,color .2s;
}
.toc-list a i{font-size:11px;color:var(--brand-soft);transition:color .2s}
.toc-list a:hover{background:var(--bg-soft);color:var(--brand)}
.toc-list a:hover i{color:var(--brand-bright)}
.toc-note{
  margin-top:18px;padding:14px 16px;border-radius:12px;background:var(--bg-soft);
  font-size:13px;line-height:1.7;color:var(--muted);
}
.toc-note strong{color:var(--brand);display:block;margin-bottom:4px;font-size:13px}

/* Blocks */
.guide-main{display:flex;flex-direction:column;gap:64px;min-width:0}
.block-head{margin-bottom:24px}
.block-title{position:relative;padding-left:18px}
.block-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:4px;background:var(--grad);
}
.block-sub{margin-top:12px;color:var(--muted);font-size:15px;max-width:46em}

/* Check grid */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);transition:transform .24s,box-shadow .24s,border-color .24s;
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-soft)}
.check-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.check-ico{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  display:grid;place-items:center;background:rgba(53,214,181,.14);color:#159B7E;font-size:15px;
}
.check-card h3{font-size:16.5px}
.check-card p{font-size:15px;line-height:1.8;color:var(--text)}
.check-tag{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;padding:4px 12px;
  border-radius:999px;font-size:12px;color:var(--brand);background:var(--bg-soft);font-weight:600;
}

/* Steps */
.step-list{display:flex;flex-direction:column;gap:20px}
.step-card{
  position:relative;display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;
  align-items:start;padding:26px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);
  transition:transform .24s,box-shadow .24s,border-color .24s;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-soft)}
.step-num{
  width:64px;height:64px;border-radius:18px;background:var(--grad-soft);
  border:1px solid var(--line);display:grid;place-items:center;
  color:var(--brand);font-size:19px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step-body h3{margin-bottom:8px}
.step-body p{font-size:15px;line-height:1.8;color:var(--text)}
.step-tip{
  margin-top:16px;display:flex;gap:10px;align-items:flex-start;
  padding:12px 16px;border-radius:12px;background:#FFF6EC;
  border-left:3px solid var(--apricot);font-size:14px;line-height:1.75;color:#8A5A2B;
}
.step-tip i{margin-top:4px;color:#E08A3D;font-size:13px}
.step-meta{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;
}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--bg-soft);color:var(--brand);
}
.pill.cyan{background:rgba(53,214,181,.14);color:#129078}
.pill.plain{background:#fff;border:1px solid var(--line);color:var(--muted)}

/* Next step strip */
.next-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 26px;border-radius:var(--r-md);
  background:linear-gradient(120deg,#F3EEFF 0%,#E9FBF7 100%);
  border:1px solid var(--line);
}
.next-strip p{font-size:15px;color:var(--text)}
.next-strip strong{color:var(--title);margin-right:6px}

/* FAQ */
.faq{max-width:920px}
.faq .accordion-item{
  border:1px solid var(--line);border-left:4px solid transparent;
  border-radius:16px;background:#fff;margin-bottom:12px;overflow:hidden;
  box-shadow:var(--sh-1);transition:border-color .2s,box-shadow .2s;
}
.faq .accordion-item:has(.accordion-button:not(.collapsed)){
  border-left-color:var(--brand-bright);box-shadow:var(--sh-2);
}
.faq .accordion-item:hover{border-color:var(--brand-soft)}
.faq .accordion-button{
  display:flex;align-items:center;gap:12px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--title);
  background:#fff;box-shadow:none;border:0;line-height:1.55;
}
.faq .accordion-button:not(.collapsed){background:#FBFAFF;color:var(--brand)}
.faq .accordion-button:focus{box-shadow:inset 0 0 0 3px rgba(110,75,255,.16)}
.faq .accordion-button::after{display:none}
.faq .accordion-button::before{
  content:"+";order:2;margin-left:auto;font-size:22px;font-weight:400;line-height:1;
  color:var(--brand);transition:transform .24s;
}
.faq .accordion-button:not(.collapsed)::before{content:"−";color:var(--brand-bright)}
.faq .accordion-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text)}

/* CTA band */
.cta-wrap{padding:0 0 88px}
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(120deg,#241A4A 0%,#4B2E9B 66%,#6E4BFF 100%);
  padding:44px;display:grid;grid-template-columns:1.35fr auto;gap:32px;align-items:center;
  box-shadow:var(--sh-2);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(320px 200px at 82% 12%,rgba(53,214,181,.30),transparent 70%),
    radial-gradient(280px 200px at 8% 92%,rgba(185,167,255,.34),transparent 72%);
}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{color:#fff}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.78);font-size:15px;max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-brand{background:#fff;color:var(--brand);box-shadow:0 12px 28px rgba(0,0,0,.22)}
.cta-actions .btn-brand:hover{color:var(--brand);filter:none;background:#F6F2FF}
.cta-actions .btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}

/* Mobile drawer */
.offcanvas.mobile-drawer{background:#fff;width:min(88vw,360px)}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px}
.mobile-drawer .offcanvas-title{font-size:15px;font-weight:700;color:var(--title)}
.mobile-drawer .offcanvas-body{padding:22px}
.drawer-search{width:100%;margin-bottom:18px}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:22px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:12px;font-size:15px;font-weight:500;color:var(--text);
}
.drawer-links a:hover,.drawer-links a.active{background:var(--bg-soft);color:var(--brand)}
.btn-close{filter:none;opacity:.55}
.btn-close:hover{opacity:1}

/* ============ Footer ============ */
.site-footer{position:relative;background:#1B1236;color:#C9C1E4;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:40px;padding:64px 0 40px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-brand .brand-mark{box-shadow:0 8px 18px rgba(0,0,0,.35)}
.foot-brand strong{display:block;font-size:16px;color:#fff;line-height:1.3}
.foot-brand span{display:block;font-size:12px;color:#9B92BE;margin-top:3px;letter-spacing:.05em}
.foot-about{font-size:14px;line-height:1.85;color:#A79ECB;max-width:32em}
.foot-grid h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:700;letter-spacing:.04em}
.foot-list li+li{margin-top:10px}
.foot-list a{font-size:14px;color:#A79ECB;transition:color .2s}
.foot-list a:hover{color:var(--cyan)}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#A79ECB;line-height:1.7}
.foot-contact li+li{margin-top:12px}
.foot-contact i{color:var(--brand-soft);font-size:13px;margin-top:5px;flex:0 0 auto}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0 30px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8C82B4;
}

/* ============ Responsive ============ */
@media (max-width:1200px){
  .command-search{width:220px}
  .brand-text strong{font-size:15px}
  .nav-link{padding:10px 11px;font-size:14.5px}
}
@media (max-width:1100px){
  .nav-links{display:none}
  .header-actions .icon-btn{display:none}
  .menu-toggle{display:grid}
  .cat-hero-grid{grid-template-columns:1fr;gap:36px}
  .cat-hero-art{max-width:560px;aspect-ratio:16/10}
  .guide-layout{grid-template-columns:1fr;gap:32px}
  .toc-card{position:static}
}
@media (max-width:991px){
  .command-search{display:none}
  .header-actions{gap:8px}
  .section{padding-bottom:56px}
  .cta-wrap{padding-bottom:56px}
  .cat-hero{padding:26px 0 52px}
  .guide-main{gap:52px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  .cta-band{grid-template-columns:1fr;padding:34px}
}
@media (max-width:767px){
  h1{font-size:clamp(1.85rem,7vw,2.5rem)}
  .hero-lead{font-size:16px}
  .check-grid{grid-template-columns:1fr}
  .step-card{grid-template-columns:1fr;gap:16px;padding:22px}
  .step-num{width:52px;height:52px;border-radius:15px;font-size:17px}
  .btn-brand,.btn-ghost{height:48px}
  .hero-cta .btn-brand,.hero-cta .btn-ghost{flex:1 1 auto;min-width:150px}
  .cta-actions{width:100%}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{flex:1 1 100%}
  .faq .accordion-button{padding:16px 18px;font-size:15px}
  .faq .accordion-body{padding:0 18px 18px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column}
}
@media (max-width:520px){
  .shell{padding:0 18px}
  .brand-text span{display:none}
  .brand-text strong{font-size:14px}
  .brand-mark{width:36px;height:36px;border-radius:11px;font-size:13px}
  .fact-row{gap:8px}
  .fact-chip{padding:8px 12px;font-size:12px}
  .hero-float{left:12px;bottom:12px;padding:10px 12px}
  .next-strip{padding:18px}
  .cta-band{padding:26px;border-radius:22px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --ink-900:#241A4A;
  --brand-700:#4B2E9B;
  --brand-500:#6E4BFF;
  --brand-200:#B9A7FF;
  --aqua:#35D6B5;
  --peach:#FFB27A;
  --bg:#F8F6FC;
  --bg-soft:#F0ECFA;
  --card:#FFFFFF;
  --text:#1C1830;
  --body:#4A445E;
  --muted:#7A7390;
  --line:#E5DFF3;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --sh-1:0 8px 24px rgba(36,26,74,.08);
  --sh-2:0 18px 48px rgba(36,26,74,.12);
  --sh-3:0 24px 64px rgba(36,26,74,.18);
  --grad:linear-gradient(120deg,#6E4BFF 0%,#4B2E9B 52%,#35D6B5 118%);
  --grad-soft:linear-gradient(135deg,#EFE9FF 0%,#E6FBF6 100%);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--body);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--aqua);}
h1,h2,h3,h4{color:var(--text);margin:0;font-weight:700;letter-spacing:0;}
h1{font-size:clamp(2.1rem,4vw,3.2rem);line-height:1.16;}
h2{font-size:clamp(1.5rem,2.4vw,2.15rem);line-height:1.28;}
h3{font-size:1.25rem;line-height:1.4;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(110,75,255,.38);outline-offset:3px;border-radius:8px;}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:16px;
  box-shadow:0 8px 20px rgba(75,46,155,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.04em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:12px;
  font-size:14.5px;font-weight:500;color:var(--body);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--bg-soft);color:var(--brand-700);}
.nav-link.active{color:var(--brand-700);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--grad);
}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.command-search{
  position:relative;display:flex;align-items:center;
  width:290px;height:42px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:0 10px 0 36px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.command-search i{position:absolute;left:13px;font-size:13px;color:var(--muted);}
.command-search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:13.5px;color:var(--text);
}
.command-search input::placeholder{color:#A79FBC;}
.command-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(110,75,255,.16);}
.kbd{
  flex-shrink:0;font-size:11px;color:var(--muted);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;background:var(--bg-soft);
}
.tool-btn{
  width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--body);
  transition:all .2s ease;
}
.tool-btn:hover{border-color:var(--brand-200);color:var(--brand-700);background:var(--bg-soft);}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:12px;
  background:var(--grad);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 10px 24px rgba(75,46,155,.26);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(75,46,155,.32);filter:brightness(1.05);}
.btn-cta:active{transform:translateY(0);}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:#fff;color:var(--text);font-size:16px;align-items:center;justify-content:center;
}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;padding:16px 24px 24px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer .nav-links{flex-direction:column;align-items:stretch;gap:6px;margin:0 0 14px;}
.mobile-drawer .nav-link{padding:13px 14px;font-size:15px;min-height:48px;}
.mobile-drawer .nav-link.active::after{display:none;}
.mobile-drawer .nav-link.active{background:var(--bg-soft);}
.mobile-drawer .btn-cta{width:100%;height:48px;}
.mobile-drawer .command-search{width:100%;margin-bottom:14px;}

/* ============ 面包屑 ============ */
.crumb-bar{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-700);}
.crumb i{font-size:10px;opacity:.6;}
.crumb .cur{color:var(--brand-700);font-weight:600;}

/* ============ Hero（居中窄版） ============ */
.hero-sec{
  position:relative;
  padding:56px 0 72px;
  background:
    radial-gradient(760px 420px at 50% -10%, rgba(110,75,255,.16), transparent 70%),
    radial-gradient(620px 380px at 88% 8%, rgba(53,214,181,.14), transparent 72%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  overflow:hidden;
}
.hero-sec::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(248,246,252,.82) 0%,rgba(248,246,252,.95) 62%,var(--bg) 100%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:760px;margin:0 auto;text-align:center;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:12.5px;font-weight:600;color:var(--brand-700);
  box-shadow:var(--sh-1);
}
.pill i{color:var(--aqua);}
.hero-inner h1{margin:22px 0 0;}
.hero-inner h1 .hl{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;
}
.hero-lead{
  margin:20px auto 0;max-width:660px;
  font-size:16.5px;line-height:1.85;color:var(--body);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px;}
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-main{background:var(--grad);color:#fff;box-shadow:0 14px 30px rgba(75,46,155,.26);}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 20px 40px rgba(75,46,155,.34);filter:brightness(1.05);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-700);border:1px solid var(--brand-200);}
.btn-ghost:hover{background:var(--bg-soft);color:var(--brand-700);transform:translateY(-2px);}
.stat-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:34px;}
.stat-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  font-size:12.5px;color:var(--muted);
}
.stat-badge b{
  font-variant-numeric:tabular-nums;
  font-size:16px;font-weight:700;color:var(--brand-700);
}
.stat-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--aqua);}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section.soft{background:var(--bg-soft);}
.sec-head{max-width:720px;margin:0 auto 44px;text-align:center;}
.sec-head .kicker{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:var(--brand-500);text-transform:uppercase;margin-bottom:12px;
}
.sec-head h2{margin-bottom:14px;}
.sec-head p{margin:0;font-size:15.5px;color:var(--muted);line-height:1.85;}

/* ============ 风险自查卡 ============ */
.risk-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.risk-card{
  position:relative;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.risk-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-200);}
.risk-top{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.risk-ico{
  width:48px;height:48px;border-radius:14px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad-soft);color:var(--brand-700);font-size:18px;
  border:1px solid rgba(110,75,255,.14);
}
.risk-top h3{font-size:18px;margin:0;}
.risk-card p{margin:0 0 16px;font-size:15px;color:var(--body);line-height:1.8;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--body);padding:6px 0;
}
.check-list i{
  color:var(--aqua);font-size:13px;margin-top:6px;flex-shrink:0;
}
.risk-tip{
  margin-top:16px;padding:12px 16px;border-radius:12px;
  background:rgba(255,178,122,.14);
  border-left:3px solid var(--peach);
  font-size:13.5px;color:#8A5A2E;line-height:1.7;
}

/* ============ 时间线检查清单 ============ */
.timeline-wrap{max-width:940px;margin:0 auto;}
.timeline{position:relative;padding-left:40px;}
.timeline::before{
  content:"";position:absolute;left:15px;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand-500),var(--brand-200) 55%,rgba(53,214,181,.55));
}
.tl-item{position:relative;margin-bottom:22px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:-40px;top:22px;
  width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:2px solid var(--brand-200);
  color:var(--brand-700);font-size:12.5px;font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 6px 16px rgba(36,26,74,.10);
}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 26px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand-200);}
.tl-card h3{font-size:17px;margin-bottom:8px;}
.tl-card p{margin:0;font-size:15px;line-height:1.8;color:var(--body);}
.tl-note{
  display:inline-flex;align-items:center;gap:8px;margin-top:12px;
  font-size:13px;color:var(--brand-700);
  background:rgba(110,75,255,.08);border-radius:999px;padding:5px 14px;
}

/* ============ 安全设置对照 ============ */
.table-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
.setting-table{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px;}
.setting-table thead th{
  background:var(--bg-soft);color:var(--text);font-weight:600;
  text-align:left;padding:16px 22px;font-size:14px;white-space:nowrap;
}
.setting-table tbody td{
  padding:16px 22px;border-top:1px solid var(--line);color:var(--body);line-height:1.7;
}
.setting-table tbody tr:hover{background:#FCFBFF;}
.tag{
  display:inline-block;padding:3px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;white-space:nowrap;
}
.tag-ok{background:rgba(53,214,181,.16);color:#177C68;}
.tag-mid{background:rgba(255,178,122,.2);color:#96602B;}
.tag-warn{background:rgba(110,75,255,.12);color:#4B2E9B;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--brand-200);box-shadow:var(--sh-1);}
.faq-item[open]::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--brand-500),var(--aqua));
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 26px;font-size:16px;font-weight:600;color:var(--text);
  min-height:56px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-plus{
  position:relative;width:22px;height:22px;flex-shrink:0;
  border-radius:50%;border:1.5px solid var(--brand-200);background:#fff;
  transition:background .2s ease,border-color .2s ease,transform .24s ease;
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-700);
  border-radius:2px;transform:translate(-50%,-50%);
  transition:transform .24s ease,opacity .24s ease;
}
.faq-plus::before{width:10px;height:1.6px;}
.faq-plus::after{width:1.6px;height:10px;}
.faq-item[open] .faq-plus{background:var(--grad);border-color:transparent;transform:rotate(180deg);}
.faq-item[open] .faq-plus::before{background:#fff;}
.faq-item[open] .faq-plus::after{opacity:0;}
.faq-body{padding:0 26px 22px;font-size:15px;line-height:1.85;color:var(--body);}
.faq-body p:last-child{margin-bottom:0;}

/* ============ CTA 大卡 ============ */
.cta-sec{padding:0 0 88px;}
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(118deg,#241A4A 0%,#4B2E9B 62%,#5A3AB8 100%);
  padding:44px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-2);
}
.cta-card::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(420px 220px at 12% 10%, rgba(53,214,181,.26), transparent 70%),
    radial-gradient(360px 200px at 88% 88%, rgba(255,178,122,.20), transparent 72%);
  pointer-events:none;
}
.cta-text{position:relative;z-index:2;max-width:640px;}
.cta-text h2{color:#fff;margin-bottom:12px;}
.cta-text p{margin:0;color:rgba(255,255,255,.78);font-size:15.5px;line-height:1.8;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}
.btn-light{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  background:#fff;color:var(--brand-700);font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn-light:hover{color:var(--brand-700);transform:translateY(-2px);box-shadow:0 16px 32px rgba(0,0,0,.22);}
.btn-outline-light2{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.42);color:#fff;font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.btn-outline-light2:hover{color:#fff;background:rgba(255,255,255,.14);transform:translateY(-2px);}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand-500),var(--aqua),var(--peach));
}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px;
  padding-bottom:44px;
}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.foot-brand .brand-mark{width:40px;height:40px;font-size:15px;}
.foot-brand strong{display:block;color:#fff;font-size:15.5px;font-weight:700;line-height:1.3;}
.foot-brand span{font-size:11.5px;color:rgba(255,255,255,.55);}
.foot-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;max-width:340px;}
.site-footer h4{
  color:#fff;font-size:14px;font-weight:600;margin:0 0 16px;letter-spacing:.02em;
}
.foot-list li{margin-bottom:10px;}
.foot-list a{color:rgba(255,255,255,.68);font-size:14px;transition:color .2s ease;}
.foot-list a:hover{color:var(--aqua);}
.foot-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.75;margin-bottom:12px;
}
.foot-contact i{color:var(--aqua);font-size:12px;margin-top:6px;flex-shrink:0;}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .command-search{width:230px;}
  .nav-link{padding:9px 11px;font-size:14px;}
}
@media (max-width:992px){
  .nav-links{display:none;}
  .command-search{display:none;}
  .header-tools .tool-btn{display:none;}
  .menu-toggle{display:inline-flex;}
  .mobile-drawer .command-search{display:flex;}
  .section{padding:56px 0;}
  .hero-sec{padding:40px 0 56px;}
  .risk-grid{grid-template-columns:1fr;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:34px 28px;}
  .cta-actions{width:100%;}
  .cta-actions a{flex:1;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-sec{padding-bottom:64px;}
}
@media (max-width:768px){
  .header-inner{height:68px;gap:12px;}
  .brand-text strong{font-size:14.5px;}
  .brand-text em{display:none;}
  .hero-inner h1{font-size:clamp(1.75rem,7vw,2.3rem);}
  .hero-lead{font-size:15.5px;}
  .sec-head{margin-bottom:32px;}
  .timeline{padding-left:34px;}
  .tl-dot{left:-34px;width:28px;height:28px;font-size:11.5px;top:20px;}
  .tl-card{padding:18px 20px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .stat-badge{padding:8px 14px;}
  .faq-item summary{padding:18px 20px;font-size:15px;}
  .faq-body{padding:0 20px 20px;}
  .cta-card{padding:30px 22px;}
}
@media (max-width:520px){
  .shell{padding:0 18px;}
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .risk-card{padding:22px;}
  .hero-actions{flex-direction:column;}
  .cta-actions{flex-direction:column;}
  .stat-row{flex-direction:column;align-items:stretch;}
  .stat-badge{justify-content:center;}
  .setting-table thead th,.setting-table tbody td{padding:13px 16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
}

/* roulang page: category3 */
:root{
  --ink:#241A4A;
  --purple:#4B2E9B;
  --purple-bright:#6E4BFF;
  --purple-soft:#B9A7FF;
  --cyan:#35D6B5;
  --apricot:#FFB27A;
  --page:#F8F6FC;
  --section:#F0ECFA;
  --card:#FFFFFF;
  --text:#1C1830;
  --body:#4A445E;
  --muted:#7A7390;
  --line:#E5DFF3;
  --grad:linear-gradient(120deg,#6E4BFF 0%,#8A5CFF 45%,#35D6B5 100%);
  --grad-soft:linear-gradient(120deg,rgba(110,75,255,.14),rgba(53,214,181,.14));
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --sh-card:0 8px 24px rgba(36,26,74,.08);
  --sh-key:0 18px 48px rgba(36,26,74,.12);
  --sh-hover:0 24px 64px rgba(36,26,74,.18);
  --ease:200ms cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--purple-bright);text-decoration:none;transition:color var(--ease);}
a:hover{color:#14b394;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 16px;}
h1,h2,h3,h4{color:var(--text);font-weight:700;margin:0;}
h1{font-size:clamp(2.1rem,3.6vw,3.15rem);line-height:1.16;letter-spacing:-.01em;}
h2{font-size:clamp(1.5rem,2.4vw,2.1rem);line-height:1.28;}
h3{font-size:1.22rem;line-height:1.4;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
::selection{background:rgba(110,75,255,.18);}
:focus-visible{outline:3px solid rgba(110,75,255,.45);outline-offset:2px;}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--grad);
  display:grid;place-items:center;
  color:#fff;font-size:16px;
  box-shadow:0 8px 18px rgba(110,75,255,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text);}
.brand-text span{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.02em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:10px;}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--body);
  transition:background var(--ease),color var(--ease);
  white-space:nowrap;
}
.nav-link:hover{background:var(--section);color:var(--purple);}
.nav-link.active{color:var(--purple);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:296px;height:42px;padding:0 12px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.command-search i{color:var(--muted);font-size:13px;}
.command-search input{
  flex:1;min-width:0;border:0;outline:none;background:transparent;
  font-size:14px;color:var(--text);
}
.command-search input::placeholder{color:#A49DBB;}
.command-search:focus-within{border-color:var(--purple-bright);box-shadow:0 0 0 4px rgba(110,75,255,.14);}
.kbd{
  font-size:11px;color:var(--muted);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;background:var(--page);
}
.icon-btn{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  color:var(--body);background:#fff;border:1px solid var(--line);
  transition:all var(--ease);
}
.icon-btn:hover{color:var(--purple);border-color:var(--purple-soft);background:var(--section);}
.btn-grad{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:0;border-radius:var(--r-sm);
  background:var(--grad);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 10px 24px rgba(110,75,255,.28);
  cursor:pointer;transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);
}
.btn-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(110,75,255,.34);filter:brightness(1.05);}
.btn-grad:active{transform:translateY(0);}
.btn-grad.sm{height:42px;padding:0 20px;font-size:14px;border-radius:12px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);
  background:#fff;border:1px solid var(--purple-soft);color:var(--purple);
  font-size:15px;font-weight:600;transition:all var(--ease);
}
.btn-ghost:hover{background:var(--section);color:var(--purple);border-color:var(--purple-bright);transform:translateY(-2px);}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--purple);
  font-size:16px;cursor:pointer;
}
.offcanvas{background:#fff;}
.offcanvas-header{border-bottom:1px solid var(--line);}
.mobile-links{display:flex;flex-direction:column;gap:6px;}
.mobile-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 16px;border-radius:12px;
  color:var(--body);font-size:15px;font-weight:500;background:var(--page);
}
.mobile-links a.active{color:var(--purple);background:var(--section);font-weight:600;}
.mobile-cta{margin-top:18px;display:grid;gap:12px;}

/* ---------- breadcrumb ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);padding:22px 0 0;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--purple-bright);}
.crumbs span.sep{color:#C6BFDB;}
.crumbs .current{color:var(--purple);font-weight:600;}

/* ---------- hero ---------- */
.hero-enterprise{
  position:relative;
  padding:36px 0 84px;
  background-image:
    radial-gradient(680px 380px at 82% 8%,rgba(110,75,255,.16),transparent 70%),
    radial-gradient(520px 320px at 6% 82%,rgba(53,214,181,.14),transparent 72%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.hero-enterprise::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(248,246,252,.92),rgba(248,246,252,.98));
  z-index:0;
}
.hero-enterprise .shell{position:relative;z-index:1;}
.hero-grid{
  display:grid;grid-template-columns:1.08fr .92fr;
  gap:52px;align-items:center;margin-top:34px;
}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:rgba(110,75,255,.08);
  border:1px solid rgba(110,75,255,.24);
  color:var(--purple);font-size:13px;font-weight:600;
}
.pill i{color:var(--cyan);}
.hero-copy h1{margin:18px 0 16px;}
.hero-copy .lead{font-size:17px;line-height:1.85;color:var(--body);max-width:36em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 24px;}
.hero-points{display:grid;gap:10px;}
.hero-points li{display:flex;gap:10px;font-size:15px;color:var(--body);}
.hero-points i{color:var(--cyan);margin-top:5px;font-size:14px;}
.hero-panel{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-key);border:1px solid rgba(255,255,255,.6);
  background:#241A4A;
}
.hero-panel .panel-media{position:relative;aspect-ratio:4/3;}
.hero-panel .panel-media img{width:100%;height:100%;object-fit:cover;}
.hero-panel .panel-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(36,26,74,.06) 30%,rgba(36,26,74,.78) 100%);
}
.panel-stats{
  position:absolute;left:18px;right:18px;bottom:18px;
  display:grid;grid-template-columns:repeat(2,1fr);gap:10px;
  z-index:2;
}
.stat-chip{
  background:rgba(255,255,255,.94);
  border:1px solid rgba(255,255,255,.7);
  border-radius:16px;padding:10px 14px;
  backdrop-filter:blur(6px);
}
.stat-chip strong{
  display:block;font-size:1.35rem;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-chip span{font-size:12px;color:var(--muted);}

/* ---------- section base ---------- */
.section{padding:88px 0;}
.section.soft{background:var(--section);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--purple);
  letter-spacing:.06em;margin-bottom:12px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--body);margin:0;}
.title-line{
  display:block;width:56px;height:4px;border-radius:4px;
  background:var(--grad);margin:16px 0 0;
}

/* ---------- steps ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);padding:26px 24px;
  box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--purple-soft);}
.step-num{
  font-size:2rem;font-weight:700;line-height:1;
  font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:16px;display:block;
}
.step-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--purple);font-size:17px;margin-bottom:16px;
}
.step-card h3{font-size:1.06rem;margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--body);margin:0 0 14px;}
.step-tip{
  font-size:13px;color:var(--muted);background:var(--page);
  border-left:3px solid var(--cyan);border-radius:0 10px 10px 0;
  padding:8px 12px;
}

/* ---------- capabilities ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.cap-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-card);height:100%;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--purple-soft);}
.cap-top{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.cap-icon{
  width:50px;height:50px;border-radius:16px;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--purple);font-size:19px;flex-shrink:0;
}
.cap-card h3{font-size:1.2rem;margin:0;}
.cap-card p{font-size:15.5px;margin:0 0 16px;}
.cap-list{display:grid;gap:10px;}
.cap-list li{display:flex;gap:10px;font-size:14.5px;color:var(--body);}
.cap-list i{color:var(--cyan);font-size:12px;margin-top:6px;}

/* ---------- quote / example ---------- */
.quote-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:stretch;}
.quote-card{
  background:var(--card);border:1px solid var(--line);
  border-left:4px solid var(--cyan);
  border-radius:var(--r-md);padding:32px;box-shadow:var(--sh-card);
}
.quote-tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  color:#9A6428;background:rgba(255,178,122,.18);
  border:1px solid rgba(255,178,122,.5);
  padding:4px 12px;border-radius:999px;margin-bottom:16px;
}
.quote-card blockquote{
  margin:0 0 18px;font-size:17px;line-height:1.85;color:var(--text);font-weight:500;
}
.quote-meta{display:flex;flex-wrap:wrap;gap:22px;font-size:13.5px;color:var(--muted);}
.quote-meta strong{color:var(--ink);font-variant-numeric:tabular-nums;}
.quote-media{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-card);
  border:1px solid var(--line);min-height:260px;
}
.quote-media img{width:100%;height:100%;object-fit:cover;}

/* ---------- form ---------- */
.form-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:start;}
.form-aside h2{margin-bottom:14px;}
.form-aside p{font-size:16px;}
.aside-points{display:grid;gap:14px;margin-top:26px;}
.aside-points li{display:flex;gap:12px;font-size:15px;}
.aside-points .dot{
  width:28px;height:28px;border-radius:9px;flex-shrink:0;
  background:var(--grad-soft);color:var(--purple);
  display:grid;place-items:center;font-size:12px;margin-top:3px;
}
.form-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-key);
}
.form-card h3{font-size:1.15rem;margin-bottom:6px;}
.form-card .form-note{font-size:13.5px;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 textarea{
  width:100%;min-height:48px;padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--text);font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--purple-bright);
  box-shadow:0 0 0 3px rgba(110,75,255,.16);
}
.field input::placeholder,.field textarea::placeholder{color:#A49DBB;}
.form-card .btn-grad{width:100%;}
.form-hint{font-size:12.5px;color:var(--muted);margin:14px 0 0;text-align:center;}
.form-alert{
  display:none;margin-top:16px;padding:12px 14px;border-radius:12px;
  font-size:14px;color:#7A4A12;background:rgba(255,178,122,.16);
  border:1px solid rgba(255,178,122,.55);
}
.form-alert.show{display:block;}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:var(--purple-soft);box-shadow:var(--sh-card);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 56px 20px 24px;
  font-size:16px;font-weight:600;color:var(--text);
  display:flex;align-items:center;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  font-size:17px;font-weight:600;color:var(--purple);
  background:var(--section);transition:transform var(--ease),background var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);background:rgba(110,75,255,.16);}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;border-radius:4px;background:var(--grad);
}
.faq-body{padding:0 24px 22px 24px;font-size:15px;line-height:1.8;color:var(--body);}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:44px;
  background:linear-gradient(120deg,#241A4A 0%,#3B2680 55%,#4B2E9B 100%);
  box-shadow:var(--sh-key);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(2px 2px at 18% 26%,rgba(255,255,255,.7),transparent 60%),
    radial-gradient(2px 2px at 64% 16%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(2px 2px at 82% 62%,rgba(255,255,255,.5),transparent 60%),
    radial-gradient(2px 2px at 34% 78%,rgba(255,255,255,.42),transparent 60%);
  opacity:.85;pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{color:#fff;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.78);margin:0;font-size:15.5px;max-width:44em;}
.cta-actions{display:flex;gap:14px;flex-shrink:0;flex-wrap:wrap;}
.btn-light{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  background:#fff;color:var(--purple);font-weight:600;font-size:15px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.btn-light:hover{color:var(--purple);transform:translateY(-2px);box-shadow:0 16px 32px rgba(0,0,0,.22);}
.btn-outline-light2{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.48);color:#fff;font-weight:600;font-size:15px;
  transition:background var(--ease),border-color var(--ease);
}
.btn-outline-light2:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:0;
  background:#241A4A;color:rgba(255,255,255,.72);
  border-top:3px solid transparent;
  border-image:linear-gradient(90deg,#6E4BFF,#35D6B5,#FFB27A) 1;
  padding:64px 0 28px;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.foot-brand .brand-mark{box-shadow:none;}
.foot-brand strong{display:block;color:#fff;font-size:16px;font-weight:700;line-height:1.3;}
.foot-brand span{font-size:11px;color:rgba(255,255,255,.55);}
.foot-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin:0;max-width:32em;}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.02em;}
.foot-list{display:grid;gap:10px;}
.foot-list a{font-size:14px;color:rgba(255,255,255,.68);}
.foot-list a:hover{color:var(--cyan);}
.foot-contact{display:grid;gap:12px;}
.foot-contact li{display:flex;gap:10px;font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.7;}
.foot-contact i{color:var(--cyan);font-size:12px;margin-top:6px;flex-shrink:0;}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .command-search{width:240px;}
  .nav-link{padding:9px 11px;font-size:14.5px;}
}
@media (max-width:1100px){
  .command-search{display:none;}
}
@media (max-width:992px){
  .nav-links{display:none;}
  .menu-toggle{display:grid;place-items:center;}
  .header-actions .icon-btn{display:none;}
  .header-inner{height:68px;gap:12px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-enterprise{padding:28px 0 60px;}
  .section{padding:56px 0;}
  .steps-grid{grid-template-columns:repeat(2,1fr);}
  .cap-grid{grid-template-columns:1fr;}
  .quote-wrap{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px;}
  .cta-actions{width:100%;}
  .cta-actions a{flex:1;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .hero-copy .lead{font-size:15.5px;}
  .hero-panel .panel-media{aspect-ratio:16/10;}
  .steps-grid{grid-template-columns:1fr;}
  .stat-chip strong{font-size:1.2rem;}
  .form-card{padding:24px;}
  .faq-item summary{padding:18px 52px 18px 20px;font-size:15px;}
  .faq-body{padding:0 20px 20px 20px;}
}
@media (max-width:520px){
  .shell{padding:0 16px;}
  .brand-text strong{font-size:15px;}
  .brand-text span{display:none;}
  .header-actions .btn-grad{display:none;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions a{width:100%;}
  .foot-grid{grid-template-columns:1fr;}
  .cta-band{padding:26px 22px;}
  .brand-mark{width:36px;height:36px;border-radius:10px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --ink:#241A4A;
  --brand:#4B2E9B;
  --brand-bright:#6E4BFF;
  --brand-soft:#B9A7FF;
  --cyan:#35D6B5;
  --amber:#FFB27A;
  --page:#F8F6FC;
  --page-alt:#F0ECFA;
  --white:#FFFFFF;
  --text:#1C1830;
  --body:#4A445E;
  --muted:#7A7390;
  --line:#E5DFF3;
  --grad:linear-gradient(118deg,#6E4BFF 0%,#4B2E9B 58%,#35D6B5 132%);
  --grad-soft:linear-gradient(118deg,rgba(110,75,255,.14),rgba(53,214,181,.14));
  --shadow-sm:0 8px 24px rgba(36,26,74,.08);
  --shadow-md:0 18px 48px rgba(36,26,74,.12);
  --shadow-lg:0 24px 64px rgba(36,26,74,.18);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--page);
  color:var(--body);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:inherit}
a{color:var(--brand);text-decoration:none;text-underline-offset:3px;transition:color .2s ease}
a:hover{color:var(--cyan)}
h1,h2,h3,h4{color:var(--text);font-weight:700;margin:0;line-height:1.25;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
input,button{font-size:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(110,75,255,.35);border-radius:10px}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:var(--page-alt)}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand);background:rgba(110,75,255,.09);
  border:1px solid rgba(110,75,255,.18);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.h2{font-size:clamp(1.5rem,2.4vw,2.15rem);line-height:1.25;margin-bottom:14px}
.lead{font-size:16px;color:var(--muted);line-height:1.8;max-width:700px}
.grad-text{
  background:linear-gradient(100deg,#6E4BFF,#35D6B5);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* 按钮 */
.btn-brand,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-weight:600;font-size:15px;border:1px solid transparent;
  cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;line-height:1;
}
.btn-brand{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(75,46,155,.28)}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 36px rgba(75,46,155,.34)}
.btn-brand:active{transform:translateY(0);box-shadow:0 8px 18px rgba(75,46,155,.26)}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(75,46,155,.28);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{background:var(--page-alt);color:var(--brand);border-color:var(--brand-soft);transform:translateY(-2px)}
.btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-line:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.btn-sm{min-height:42px;padding:0 18px;font-size:14px;border-radius:12px}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand);
  transition:gap .2s ease,color .2s ease;
}
.link-more:hover{gap:13px;color:var(--cyan)}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(12px);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(36,26,74,.08)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand:hover{color:var(--brand)}
.brand-mark{
  width:40px;height:40px;flex:none;display:grid;place-items:center;
  border-radius:12px;background:var(--grad);color:#fff;font-size:16px;
  box-shadow:0 8px 20px rgba(75,46,155,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em}
.brand-text span{font-size:11px;font-weight:500;color:var(--muted);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--body);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:rgba(110,75,255,.08);color:var(--brand)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,#6E4BFF,#35D6B5);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.command-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:280px;height:42px;padding:0 12px;
  background:var(--page-alt);border:1px solid var(--line);
  border-radius:12px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.command-search:focus-within{
  background:#fff;border-color:var(--brand-bright);
  box-shadow:0 0 0 4px rgba(110,75,255,.14);
}
.command-search i{font-size:13px;color:var(--muted);flex:none}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:13.5px;color:var(--text);
}
.command-search input::placeholder{color:var(--muted)}
.command-search .kbd{
  flex:none;font-size:11px;color:var(--muted);border:1px solid var(--line);
  background:#fff;border-radius:6px;padding:1px 6px;font-weight:600;
}
.icon-btn{
  width:42px;height:42px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--brand);
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.icon-btn:hover{background:var(--page-alt);color:var(--brand);border-color:var(--brand-soft);transform:translateY(-2px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--brand);place-items:center;cursor:pointer;
}
.nav-toggle:hover{background:var(--page-alt)}

/* 移动端抽屉 */
.mobile-drawer{background:var(--ink)!important;color:#fff;width:320px!important;border-left:0!important}
.mobile-drawer .offcanvas-header{border-bottom:1px solid rgba(255,255,255,.14);padding:18px 20px}
.mobile-drawer .offcanvas-title{font-size:15px;font-weight:700;color:#fff}
.mobile-drawer .btn-close{filter:invert(1) grayscale(1);opacity:.8}
.mobile-drawer .offcanvas-body{padding:18px 20px 28px}
.mobile-drawer .drawer-search{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  border-radius:12px;margin-bottom:18px;
}
.mobile-drawer .drawer-search input{flex:1;min-width:0;border:0;background:transparent;color:#fff;outline:none;font-size:14px}
.mobile-drawer .drawer-search input::placeholder{color:rgba(255,255,255,.55)}
.mobile-drawer .drawer-search i{color:var(--brand-soft);font-size:13px}
.mobile-drawer .drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:12px;
  color:rgba(255,255,255,.86);font-size:15px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.mobile-drawer .drawer-nav a:hover,.mobile-drawer .drawer-nav a.active{background:rgba(255,255,255,.12);color:#fff}
.mobile-drawer .drawer-nav a.active{border-left:3px solid var(--cyan)}
.mobile-drawer .drawer-cta{margin-top:20px;width:100%}

/* Hero */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:radial-gradient(110% 130% at 84% -10%,rgba(110,75,255,.55),transparent 58%),
             linear-gradient(158deg,#241A4A 0%,#2E1F63 52%,#3A2480 100%);
  padding:52px 0 84px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,214,181,.32),transparent 66%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:34px;flex-wrap:wrap}
.crumbs a{color:rgba(255,255,255,.82)}
.crumbs a:hover{color:var(--cyan)}
.crumbs span{color:rgba(255,255,255,.34)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:#EFE9FF;background:rgba(255,255,255,.1);
  border:1px solid rgba(185,167,255,.42);margin-bottom:20px;
}
.hero-badge i{color:var(--cyan)}
.hero h1{
  font-size:clamp(1.85rem,3.4vw,2.85rem);line-height:1.2;color:#fff;
  margin-bottom:18px;max-width:660px;
}
.hero-sub{font-size:16px;line-height:1.8;color:rgba(255,255,255,.78);max-width:620px;margin-bottom:28px}
.hero-search{
  display:flex;align-items:center;gap:10px;width:100%;max-width:640px;
  background:#fff;border-radius:18px;padding:8px 8px 8px 18px;
  box-shadow:0 18px 44px rgba(20,12,48,.32);
  transition:box-shadow .2s ease,transform .2s ease;
}
.hero-search:focus-within{box-shadow:0 20px 52px rgba(20,12,48,.42),0 0 0 4px rgba(110,75,255,.28)}
.hero-search > i{color:var(--brand);font-size:15px;flex:none}
.hero-search input{
  flex:1;min-width:0;height:48px;border:0;outline:none;background:transparent;
  font-size:15px;color:var(--text);
}
.hero-search input::placeholder{color:var(--muted)}
.hero-search .btn-brand{min-height:48px;padding:0 22px}
.hero-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px}
.hero-tags .tag-label{font-size:12.5px;color:rgba(255,255,255,.55)}
.tag-chip{
  border:1px solid rgba(255,255,255,.26);background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.88);font-size:13px;padding:7px 14px;border-radius:999px;
  cursor:pointer;transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
}
.tag-chip:hover{background:rgba(255,255,255,.18);border-color:rgba(53,214,181,.7);color:#fff;transform:translateY(-2px)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:0 24px 60px rgba(14,8,36,.45);
  border:1px solid rgba(255,255,255,.16);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  background:linear-gradient(150deg,rgba(110,75,255,.28),rgba(53,214,181,.12) 62%,transparent);
  pointer-events:none;
}
.media-chip{
  position:absolute;right:18px;bottom:18px;z-index:2;
  background:rgba(255,255,255,.95);border-radius:16px;padding:12px 16px;
  box-shadow:var(--shadow-md);display:flex;flex-direction:column;gap:2px;max-width:220px;
}
.media-chip strong{font-size:13.5px;color:var(--text);font-weight:700}
.media-chip span{font-size:12px;color:var(--muted);line-height:1.5}

/* 特性条 */
.feature-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--shadow-sm);
  margin-top:-42px;position:relative;z-index:5;
}
.feature-item{display:flex;align-items:center;gap:12px}
.feature-item i{
  width:38px;height:38px;flex:none;display:grid;place-items:center;border-radius:11px;
  background:var(--grad-soft);color:var(--brand);font-size:15px;
}
.feature-item strong{display:block;font-size:14.5px;color:var(--text);font-weight:600;line-height:1.4}
.feature-item span{display:block;font-size:12.5px;color:var(--muted);line-height:1.5}

/* 目录卡 */
.dir-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
.dir-card{
  display:flex;flex-direction:column;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.dir-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--brand-soft)}
.dir-icon{
  width:52px;height:52px;display:grid;place-items:center;border-radius:16px;
  background:var(--grad-soft);color:var(--brand);font-size:20px;
  border:1px solid rgba(110,75,255,.16);
}
.dir-card h3{font-size:19px;line-height:1.4}
.dir-card p{font-size:15px;color:var(--body);line-height:1.75}
.dir-card .link-more{margin-top:auto;padding-top:6px}

/* FAQ */
.faq-toolbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;margin-bottom:28px;
}
.faq-hint{font-size:13.5px;color:var(--muted);display:inline-flex;align-items:center;gap:8px}
.faq-hint i{color:var(--cyan)}
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.faq-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 26px 24px;box-shadow:var(--shadow-sm);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-card:hover{border-color:var(--brand-soft);box-shadow:var(--shadow-md)}
.faq-q{
  display:flex;gap:12px;align-items:flex-start;
  font-size:16.5px;font-weight:600;color:var(--text);line-height:1.5;margin-bottom:12px;
}
.faq-q i{color:var(--brand-bright);font-size:15px;margin-top:4px;flex:none}
.faq-a{font-size:15px;line-height:1.8;color:var(--body)}
.faq-a em{font-style:normal;color:var(--brand);font-weight:600}
.search-empty{
  display:none;align-items:center;gap:16px;flex-wrap:wrap;
  background:var(--page-alt);border:1px dashed rgba(110,75,255,.35);
  border-radius:var(--r-md);padding:26px 28px;margin-top:26px;
}
.search-empty.show{display:flex}
.search-empty i{font-size:22px;color:var(--brand)}
.search-empty p{font-size:14.5px;color:var(--body)}
.search-empty .btn-ghost{margin-left:auto}

/* 联系条 */
.contact-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(118deg,rgba(110,75,255,.1),rgba(53,214,181,.12));
  border:1px solid rgba(110,75,255,.2);border-radius:var(--r-lg);
  padding:34px 38px;
}
.contact-band .cb-copy{max-width:640px}
.contact-band h3{font-size:20px;margin-bottom:8px}
.contact-band p{font-size:14.5px;color:var(--body);line-height:1.75}
.contact-actions{display:flex;gap:12px;flex-wrap:wrap;flex:none}

/* CTA */
.cta-card{
  position:relative;overflow:hidden;color:#fff;
  background:radial-gradient(120% 140% at 88% 0%,rgba(110,75,255,.6),transparent 60%),
             linear-gradient(140deg,#241A4A,#36207A 70%,#4B2E9B 100%);
  border-radius:var(--r-lg);padding:46px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-lg);
}
.cta-card::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.14;pointer-events:none;
}
.cta-card .cta-copy{position:relative;z-index:2;max-width:640px}
.cta-card h2{color:#fff;font-size:clamp(1.4rem,2.2vw,1.9rem);margin-bottom:12px}
.cta-card p{font-size:15px;color:rgba(255,255,255,.78);line-height:1.8}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;flex:none}

/* 页脚 */
.site-footer{
  position:relative;background:var(--ink);color:rgba(255,255,255,.72);
  padding:64px 0 28px;margin-top:88px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,#6E4BFF,#35D6B5,#FFB27A);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:40px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-brand .brand-mark{background:var(--grad);color:#fff}
.foot-brand strong{display:block;font-size:15.5px;color:#fff;font-weight:700;line-height:1.35}
.foot-brand span{display:block;font-size:11.5px;color:rgba(255,255,255,.5);margin-top:3px}
.foot-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:330px}
.site-footer h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.foot-list li{margin-bottom:10px}
.foot-list a{font-size:14px;color:rgba(255,255,255,.7);transition:color .2s ease,padding-left .2s ease}
.foot-list a:hover{color:var(--cyan);padding-left:4px}
.foot-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.62);margin-bottom:12px;
}
.foot-contact i{color:var(--brand-soft);font-size:13px;margin-top:5px;flex:none}
.foot-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding-top:22px;
  font-size:12.5px;color:rgba(255,255,255,.48);
}

/* 响应式 */
@media (max-width:1100px){
  .nav-links{display:none}
  .command-search{width:220px}
  .header-inner{gap:14px}
}
@media (max-width:992px){
  .nav-toggle{display:grid}
  .command-search{display:none}
  .icon-btn{display:none}
  .hero{padding:36px 0 96px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-media{order:2;max-width:560px}
  .hero-search{max-width:100%}
  .feature-strip{grid-template-columns:repeat(2,1fr);gap:18px;margin-top:-56px}
  .section{padding:64px 0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:38px 32px}
  .contact-band{flex-direction:column;align-items:flex-start;padding:28px}
  .contact-actions{width:100%}
}
@media (max-width:768px){
  .shell{padding:0 18px}
  .dir-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .hero h1{font-size:1.72rem}
  .hero-sub{font-size:15px}
  .hero-search{flex-wrap:wrap;padding:12px 14px;border-radius:16px}
  .hero-search input{height:44px;flex:1 1 100%;order:1}
  .hero-search > i{display:none}
  .hero-search .btn-brand{width:100%;order:2}
  .feature-strip{grid-template-columns:1fr}
  .dir-card{padding:24px}
  .site-footer{padding:52px 0 24px;margin-top:64px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-about{max-width:none}
  .foot-bottom{flex-direction:column;gap:8px}
  .cta-card{padding:32px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn-brand,.cta-actions .btn-line{width:100%}
  .contact-actions .btn-ghost,.contact-actions .btn-brand{width:100%}
}
@media (max-width:520px){
  .brand-text strong{font-size:14.5px}
  .brand-text span{font-size:10.5px}
  .hero{padding:26px 0 92px}
  .hero-badge{font-size:11.5px}
  .section{padding:52px 0}
  .faq-card{padding:22px}
  .faq-q{font-size:15.5px}
  .media-chip{padding:10px 13px;right:12px;bottom:12px;max-width:180px}
  .search-empty .btn-ghost{margin-left:0;width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}