/* roulang page: index */
:root{
  --ink-900:#120E26;
  --ink-800:#1C1740;
  --ink-700:#2A2358;
  --brand:#6A3DF5;
  --brand-2:#16C8B8;
  --accent:#FFB33C;
  --bg:#F6F5FC;
  --card:#FFFFFF;
  --line:#E6E3F5;
  --text:#2A2740;
  --muted:#6B6885;
  --dark-text:#EDEBFA;
  --dark-muted:#A9A3CF;
  --ok:#22A06B;
  --grad:linear-gradient(135deg,#6A3DF5 0%,#16C8B8 100%);
  --grad-soft:linear-gradient(135deg,rgba(106,61,245,.12),rgba(22,200,184,.12));
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --sh:0 12px 32px rgba(28,23,64,.10);
  --sh-h:0 18px 44px rgba(28,23,64,.16);
  --nav-h:68px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.015em;
  color:var(--text);
  background:var(--bg);
  padding-top:var(--nav-h);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-weight:700;letter-spacing:.01em;color:var(--text);margin:0}
h1{font-size:clamp(28px,4vw,52px);line-height:1.24;font-weight:800}
h2{font-size:clamp(22px,2.4vw,34px);line-height:1.32}
h3{font-size:20px;line-height:1.45}
p{margin:0 0 1em}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-2)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}

.wrap{width:100%;max-width:1200px;margin-inline:auto;padding-inline:24px}
@media (min-width:1400px){.wrap{max-width:1320px}}

.sec{padding:96px 0}
.sec-tight{padding:72px 0}
@media (max-width:991px){.sec{padding:72px 0}.sec-tight{padding:56px 0}}
@media (max-width:575px){.sec{padding:56px 0}.sec-tight{padding:48px 0}}

.sec-head{max-width:760px;margin-bottom:48px}
.sec-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);background:#F0EDFD;
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.sec-head h2{margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:16px;margin:0}
.sec-head.center{margin-inline:auto;text-align:center}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:var(--nav-h);
  display:flex;align-items:center;
  background:transparent;
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px rgba(28,23,64,.08);
}
.nav-inner{display:flex;align-items:center;gap:28px;width:100%}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  width:28px;height:28px;border-radius:10px;background:var(--grad);
  position:relative;flex-shrink:0;box-shadow:0 6px 16px rgba(106,61,245,.35);
}
.brand-icon::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 68% 28%, #fff 0 1.8px, transparent 2.2px),
    radial-gradient(circle at 34% 62%, rgba(255,255,255,.85) 0 1.4px, transparent 1.8px),
    radial-gradient(circle at 76% 72%, rgba(255,255,255,.6) 0 1.2px, transparent 1.6px);
}
.brand-icon::after{
  content:"";position:absolute;left:6px;top:13px;width:16px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(255,255,255,0),#fff);
  transform:rotate(-22deg);
}
.brand-text{font-size:20px;font-weight:800;letter-spacing:.01em;color:#fff;white-space:nowrap;transition:color .3s ease}
.site-header.scrolled .brand-text{color:var(--text)}
@media (max-width:575px){.brand-text{font-size:18px}}

.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 14px;font-size:15px;font-weight:500;
  color:rgba(237,235,250,.86);border-radius:999px;
  transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.10)}
.nav-links a.active{color:#fff;font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.site-header.scrolled .nav-links a{color:var(--muted)}
.site-header.scrolled .nav-links a:hover{color:var(--brand);background:#F3F1FE}
.site-header.scrolled .nav-links a.active{color:var(--brand)}

.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.06);color:#fff;display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .2s ease;
}
.nav-search-btn:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.site-header.scrolled .nav-search-btn{border-color:var(--line);background:#fff;color:var(--muted)}
.site-header.scrolled .nav-search-btn:hover{border-color:var(--brand);color:var(--brand)}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border:0;border-radius:999px;
  background:var(--grad);color:#fff;font-size:15px;font-weight:700;
  box-shadow:0 10px 24px rgba(106,61,245,.28);
  transition:transform .2s ease,box-shadow .2s ease,background-position .2s ease;
  background-size:160% 160%;
}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(106,61,245,.36);background-position:70% 50%}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:999px;
  border:1.5px solid rgba(255,255,255,.42);background:transparent;color:#fff;
  font-size:15px;font-weight:600;transition:all .2s ease;
}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px)}
.btn-outline-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:999px;
  border:1.5px solid var(--line);background:#fff;color:var(--text);
  font-size:15px;font-weight:600;transition:all .2s ease;
}
.btn-outline-dark:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh)}
.nav-cta{min-height:42px;padding:0 20px}

.burger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);
  color:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.site-header.scrolled .burger{border-color:var(--line);background:#fff;color:var(--text)}

/* 搜索浮层 */
.search-pop{
  position:absolute;top:calc(var(--nav-h) - 4px);right:24px;width:360px;max-width:calc(100vw - 32px);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-h);padding:16px;opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:all .22s ease;
}
.search-pop.open{opacity:1;visibility:visible;transform:translateY(0)}
.search-pop input{
  width:100%;height:46px;border-radius:var(--r-sm);border:1px solid var(--line);
  padding:0 16px;font-size:15px;color:var(--text);background:#FBFAFF;
}
.search-pop input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(22,200,184,.18)}
.search-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.search-tags span{font-size:13px;color:var(--muted);background:#F3F1FE;border-radius:999px;padding:4px 12px}

/* 抽屉 */
.drawer{background:var(--ink-900);color:var(--dark-text);width:300px}
.drawer .offcanvas-header{border-bottom:1px solid rgba(255,255,255,.10);padding:18px 22px}
.drawer .offcanvas-body{padding:20px 22px}
.drawer a.drawer-link{
  display:block;padding:13px 14px;border-radius:var(--r-sm);
  color:var(--dark-text);font-size:16px;font-weight:600;
  border:1px solid transparent;
}
.drawer a.drawer-link:hover{background:rgba(255,255,255,.08);color:#fff}
.drawer a.drawer-link.active{background:rgba(106,61,245,.28);border-color:rgba(106,61,245,.6);color:#fff}
.drawer .drawer-cta{margin-top:20px;width:100%}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  background:radial-gradient(circle at 18% 12%,rgba(106,61,245,.42),transparent 52%),
             radial-gradient(circle at 82% 78%,rgba(22,200,184,.28),transparent 50%),
             linear-gradient(155deg,#120E26 0%,#1C1740 58%,#2A2358 100%);
  padding:calc(var(--nav-h) + 56px) 0 96px;
  color:var(--dark-text);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle,rgba(255,255,255,.55) 0 1px,transparent 1.6px),
    radial-gradient(circle,rgba(255,255,255,.30) 0 1px,transparent 1.4px);
  background-size:120px 120px,74px 74px;
  background-position:0 0,42px 58px;
  opacity:.42;
}
.hero .wrap{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:6fr 5fr;gap:48px;align-items:center}
@media (max-width:991px){.hero-grid{grid-template-columns:1fr;gap:40px}}
@media (max-width:991px){.hero{padding:calc(var(--nav-h) + 40px) 0 64px}}

.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:#DCD6FF;background:rgba(106,61,245,.28);
  border:1px solid rgba(255,255,255,.16);
  padding:7px 16px;border-radius:999px;margin-bottom:22px;
}
.hero h1{color:#fff;margin-bottom:20px}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,#16C8B8,#FFB33C);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;line-height:1.8;color:var(--dark-muted);max-width:560px;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px}
.stat{
  min-width:132px;padding:14px 20px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:none;
}
.stat b{display:block;font-size:24px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2}
.stat span{display:block;font-size:13px;color:var(--dark-muted);margin-top:4px}

.hero-visual{position:relative}
.hero-visual .shot{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
}
.hero-visual .shot img{width:100%;height:420px;object-fit:cover}
.hero-visual .shot::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(18,14,38,.62) 0%,rgba(42,35,88,.25) 55%,rgba(22,200,184,.28) 100%);
}
.float-card{
  position:absolute;left:-22px;bottom:-26px;width:235px;
  background:#fff;border-radius:var(--r-md);padding:18px 20px;
  box-shadow:var(--sh-h);
}
.float-card .fc-label{font-size:13px;color:var(--muted);margin-bottom:6px}
.float-card .fc-value{font-size:26px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.float-card .fc-bar{height:6px;border-radius:999px;background:#EFECFB;margin-top:12px;overflow:hidden}
.float-card .fc-bar i{display:block;height:100%;width:78%;border-radius:999px;background:var(--grad)}
.float-card .fc-foot{font-size:12px;color:var(--muted);margin-top:10px}
@media (max-width:991px){
  .float-card{left:auto;right:16px;bottom:-22px;width:210px}
  .hero-visual .shot img{height:320px}
}

/* 数据条 */
.metrics{background:#fff;border-bottom:1px solid var(--line)}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.metric{padding:34px 26px;border-right:1px solid var(--line);text-align:left}
.metric:last-child{border-right:0}
.metric b{display:block;font-size:30px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.metric span{display:block;font-size:14px;color:var(--muted);margin-top:6px}
@media (max-width:767px){
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .metric{border-bottom:1px solid var(--line);padding:24px 18px}
  .metric:nth-child(2n){border-right:0}
  .metric:nth-last-child(-n+2){border-bottom:0}
}

/* 权益对比 */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
@media (max-width:991px){
  .plans{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px}
  .plans .plan{min-width:290px;scroll-snap-align:start}
}
.plan{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px;display:flex;flex-direction:column;
  box-shadow:var(--sh);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  overflow:hidden;
}
.plan::before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:var(--grad);opacity:.55}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#D9D2F8}
.plan.hot{border-color:var(--accent);transform:translateY(-14px);box-shadow:0 22px 52px rgba(28,23,64,.16)}
.plan.hot::before{opacity:1;background:linear-gradient(135deg,#FFB33C 0%,#6A3DF5 100%)}
.plan.hot:hover{transform:translateY(-18px)}
@media (max-width:991px){.plan.hot{transform:none}.plan.hot:hover{transform:translateY(-4px)}}
.plan-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.plan-name{font-size:20px;font-weight:800}
.plan-badge{
  font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;
  background:#F0EDFD;color:var(--brand);letter-spacing:.04em;
}
.plan-badge.gold{background:rgba(255,179,60,.18);color:#B06E00}
.plan-desc{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:20px;min-height:48px}
.plan-feats{border-top:1px solid var(--line);padding-top:8px;margin-bottom:24px;flex:1}
.plan-feats li{
  display:flex;align-items:flex-start;gap:10px;
  padding:11px 12px;border-radius:var(--r-sm);font-size:14.5px;line-height:1.6;
  transition:background .2s ease;
}
.plan-feats li:hover{background:#F6F4FE}
.plan-feats li i{font-size:14px;margin-top:4px;flex-shrink:0}
.plan-feats li .yes{color:var(--ok)}
.plan-feats li .no{color:#C3BFD8}
.plan-feats li.muted{color:#9C98B5}
.plan-btn{width:100%}

/* 等级亮点 非对称 */
.highlight-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.hl-card{
  position:relative;border-radius:var(--r-lg);padding:32px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh);
  transition:transform .24s ease,box-shadow .24s ease;
  overflow:hidden;
}
.hl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.hl-card.big{
  grid-column:span 2;display:grid;grid-template-columns:1.05fr 1fr;gap:32px;align-items:center;
  background:linear-gradient(135deg,#1C1740 0%,#2A2358 100%);
  border-color:rgba(255,255,255,.10);color:var(--dark-text);box-shadow:none;
}
.hl-card.big::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle,rgba(255,255,255,.42) 0 1px,transparent 1.5px);
  background-size:96px 96px;opacity:.36;
}
.hl-card.big .hl-body{position:relative;z-index:2}
.hl-card.big h3{color:#fff;margin:14px 0 12px}
.hl-card.big p{color:var(--dark-muted);font-size:15px;margin:0}
.hl-card.big img{position:relative;z-index:2;border-radius:var(--r-md);height:230px;width:100%;object-fit:cover}
.hl-ico{
  width:48px;height:48px;border-radius:16px;display:inline-flex;align-items:center;justify-content:center;
  background:#F0EDFD;color:var(--brand);font-size:20px;
}
.hl-card.big .hl-ico{background:rgba(106,61,245,.30);color:#DCD6FF;border:1px solid rgba(255,255,255,.14)}
.hl-card h3{margin:16px 0 10px}
.hl-card p{color:var(--muted);font-size:15px;margin:0 0 18px}
.hl-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:999px;
  background:#F3F1FE;color:var(--brand);
}
.chip.amber{background:rgba(255,179,60,.18);color:#A96600}
.chip.dark{background:rgba(255,255,255,.10);color:#DCD6FF;border:1px solid rgba(255,255,255,.14)}
@media (max-width:991px){
  .highlight-grid{grid-template-columns:1fr}
  .hl-card.big{grid-column:span 1;grid-template-columns:1fr;gap:22px}
  .hl-card.big img{height:190px}
}

/* 专属内容预览 */
.preview-scroll{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(272px,1fr);
  gap:22px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
}
.preview-scroll::-webkit-scrollbar{height:8px}
.preview-scroll::-webkit-scrollbar-thumb{background:#DCD6F5;border-radius:999px}
.pv-card{
  position:relative;border-radius:var(--r-md);overflow:hidden;background:#fff;
  border:1px solid var(--line);box-shadow:var(--sh);scroll-snap-align:start;
  transition:transform .24s ease,box-shadow .24s ease;
}
.pv-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.pv-thumb{position:relative;overflow:hidden}
.pv-thumb img{width:100%;height:180px;object-fit:cover;transition:transform .4s ease}
.pv-card:hover .pv-thumb img{transform:scale(1.03)}
.pv-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(18,14,38,0) 42%,rgba(18,14,38,.82) 100%);
}
.pv-lock{
  position:absolute;left:14px;bottom:14px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:#fff;
  padding:5px 12px;border-radius:999px;
  background:rgba(106,61,245,.72);border:1px solid rgba(255,255,255,.22);
}
.pv-body{padding:18px 20px 22px}
.pv-body h3{font-size:16.5px;font-weight:700;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:50px}
.pv-body p{font-size:13.5px;color:var(--muted);margin:0 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pv-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}

/* 最新信息 */
.cms-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:start}
@media (max-width:991px){.cms-grid{grid-template-columns:1fr}}
.cms-list{display:grid;gap:16px}
.cms-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;display:block;color:inherit;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  box-shadow:0 6px 18px rgba(28,23,64,.06);
}
.cms-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#D9D2F8;color:inherit}
.cms-card h3{font-size:17px;line-height:1.55;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-card:hover h3{color:var(--brand)}
.cms-card p{font-size:14px;color:var(--muted);margin:0 0 14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:#9C98B5}
.cms-feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh);display:block;color:inherit;
  transition:transform .24s ease,box-shadow .24s ease;
}
.cms-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-h);color:inherit}
.cms-feature .cf-img{position:relative;overflow:hidden}
.cms-feature .cf-img img{width:100%;height:260px;object-fit:cover;transition:transform .4s ease}
.cms-feature:hover .cf-img img{transform:scale(1.03)}
.cms-feature .cf-body{padding:26px 28px 30px}
.cms-feature h3{font-size:22px;line-height:1.5;margin:12px 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-feature:hover h3{color:var(--brand)}
.cms-feature p{font-size:15px;color:var(--muted);margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  background:#fff;border:1px dashed #D5CFF2;border-radius:var(--r-lg);
  padding:64px 24px;text-align:center;
}
.empty-state i{font-size:34px;color:#C0B9E6}
.empty-state p{color:var(--muted);margin:16px 0 20px;font-size:15px}
@media (max-width:575px){
  .cms-feature .cf-img img{height:190px}
  .cms-feature .cf-body{padding:20px}
}

/* FAQ */
.acc{max-width:860px;margin-inline:auto}
.acc .accordion-item{border:0;background:transparent;margin-bottom:12px}
.acc .accordion-button{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm)!important;
  font-size:17px;font-weight:700;color:var(--text);padding:18px 22px;
  box-shadow:none;transition:all .2s ease;
}
.acc .accordion-button:hover{border-color:#D2C9F6}
.acc .accordion-button:not(.collapsed){background:#F3F1FE;color:var(--brand);border-color:#DDD6FB}
.acc .accordion-button:focus{box-shadow:0 0 0 3px rgba(22,200,184,.20);border-color:var(--brand-2)}
.acc .accordion-button::after{
  content:"";width:28px;height:28px;border-radius:50%;flex-shrink:0;
  background-color:#F0EDFD;
  background-image:linear-gradient(#6A3DF5,#6A3DF5),linear-gradient(#6A3DF5,#6A3DF5);
  background-size:12px 2px,2px 12px;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:transform .25s ease,background-color .25s ease;
}
.acc .accordion-button:not(.collapsed)::after{
  background-image:linear-gradient(#6A3DF5,#6A3DF5);
  background-size:12px 2px;
  background-position:center;
  transform:rotate(180deg);
}
.acc .accordion-body{padding:16px 22px 20px;font-size:15px;color:var(--muted);line-height:1.85;background:#fff;border-radius:0 0 var(--r-sm) var(--r-sm)}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(135deg,#6A3DF5 0%,#16C8B8 100%);
  padding:52px 48px;color:#fff;
  display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle,rgba(255,255,255,.55) 0 1px,transparent 1.6px),
    radial-gradient(circle,rgba(255,255,255,.32) 0 1px,transparent 1.4px);
  background-size:110px 110px,68px 68px;opacity:.34;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.88);font-size:15.5px;margin-bottom:20px}
.cta-chips{display:flex;flex-wrap:wrap;gap:10px}
.cta-chips span{
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.30);
}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}
.cta-actions .btn-white{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 26px;border-radius:999px;border:0;
  background:#fff;color:var(--brand);font-size:16px;font-weight:800;
  transition:transform .2s ease,box-shadow .2s ease;
}
.cta-actions .btn-white:hover{color:var(--brand);transform:translateY(-2px);box-shadow:0 14px 30px rgba(18,14,38,.24)}
.cta-actions .btn-line{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 26px;border-radius:999px;
  border:1.5px solid rgba(255,255,255,.6);background:transparent;color:#fff;
  font-size:16px;font-weight:600;transition:all .2s ease;
}
.cta-actions .btn-line:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px)}
@media (max-width:991px){
  .cta-band{grid-template-columns:1fr;padding:40px 26px;gap:26px;border-radius:var(--r-md)}
}

/* 页脚 */
.site-footer{
  position:relative;overflow:hidden;margin-top:96px;
  background:radial-gradient(circle at 12% 8%,rgba(106,61,245,.30),transparent 52%),
             linear-gradient(160deg,#120E26 0%,#1C1740 100%);
  color:var(--dark-muted);padding:72px 0 0;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle,rgba(255,255,255,.40) 0 1px,transparent 1.5px);
  background-size:104px 104px;opacity:.28;
}
.site-footer .wrap{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-text{color:#fff;font-size:19px;font-weight:800}
.footer-about{font-size:14px;line-height:1.85;color:var(--dark-muted);max-width:340px;margin:0}
.footer-col h4{font-size:15px;color:#fff;font-weight:700;margin-bottom:18px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--dark-muted)}
.footer-col a:hover{color:var(--brand-2);text-decoration:underline}
.footer-col p{font-size:14px;margin:0 0 10px;line-height:1.8}
.footer-line{height:1px;margin:52px 0 24px;background:linear-gradient(90deg,rgba(106,61,245,0),rgba(22,200,184,.7),rgba(106,61,245,0))}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8B85B4;padding-bottom:28px;
}

/* 移动端底部条 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1035;height:56px;
  display:none;align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(28,23,64,.08);
}
.mobile-bar span{font-size:13.5px;color:var(--muted)}
.mobile-bar .btn-main{min-height:40px;padding:0 18px;font-size:14px}
@media (max-width:767px){
  .mobile-bar{display:flex}
  body{padding-bottom:56px}
  .site-footer{margin-top:64px;padding-top:56px}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .plan:hover,.hl-card:hover,.cms-card:hover,.cms-feature:hover,.pv-card:hover,.btn-main:hover,.btn-outline:hover,.btn-outline-dark:hover{transform:none!important}
}

/* roulang page: article */
:root{
  --ink-900:#120E26;
  --ink-800:#1C1740;
  --ink-700:#2A2358;
  --brand:#6A3DF5;
  --brand-2:#16C8B8;
  --accent:#FFB33C;
  --bg:#F6F5FC;
  --card:#FFFFFF;
  --line:#E6E3F5;
  --text:#2A2740;
  --muted:#6B6885;
  --ink-text:#EDEBFA;
  --ink-muted:#A9A3CF;
  --ok:#22A06B;
  --radius-xl:24px;
  --radius-lg:18px;
  --radius-sm:14px;
  --shadow-1:0 12px 32px rgba(28,23,64,.10);
  --shadow-2:0 18px 44px rgba(28,23,64,.16);
  --sec:96px;
  --bs-primary:#6A3DF5;
  --bs-link-color:#6A3DF5;
  --bs-link-hover-color:#4E27CE;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:.015em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,box-shadow .2s ease,transform .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.01em;color:var(--text);line-height:1.35}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ============ 按钮 ============ */
.btn-base{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:700;
  border:1.5px solid transparent;cursor:pointer;letter-spacing:.01em;
}
.btn-grad{background:linear-gradient(135deg,#6A3DF5 0%,#16C8B8 100%);color:#fff;
  box-shadow:0 10px 24px rgba(106,61,245,.28)}
.btn-grad:hover,.btn-grad:focus{color:#fff;transform:translateY(-2px);
  background:linear-gradient(147deg,#6A3DF5 0%,#16C8B8 100%);box-shadow:var(--shadow-2)}
.btn-line{background:#fff;border-color:var(--line);color:var(--text)}
.btn-line:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn-line-light{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.28);color:#fff}
.btn-line-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn-block{width:100%}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
@media (prefers-reduced-motion:reduce){
  .btn-grad:hover,.btn-line:hover,.btn-line-light:hover,.card-lift:hover{transform:none!important}
}

/* ============ 导航 ============ */
.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 transparent;transition:box-shadow .25s ease,border-color .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 10px 26px rgba(28,23,64,.08)}
.header-inner{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  width:28px;height:28px;border-radius:10px;position:relative;
  background:linear-gradient(135deg,#6A3DF5 0%,#16C8B8 100%);
  box-shadow:0 6px 16px rgba(106,61,245,.32);
}
.brand-icon::after{
  content:"";position:absolute;inset:0;border-radius:10px;
  background:
    radial-gradient(circle at 30% 28%,rgba(255,255,255,.95) 1.4px,transparent 1.6px),
    radial-gradient(circle at 68% 62%,rgba(255,255,255,.8) 1.1px,transparent 1.4px),
    radial-gradient(circle at 52% 22%,rgba(255,255,255,.7) 1px,transparent 1.3px);
}
.brand-text{font-size:20px;font-weight:800;letter-spacing:.01em;color:var(--text);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:10px}
.nav-links a{
  position:relative;padding:8px 14px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--text);white-space:nowrap;
}
.nav-links a:hover{color:var(--brand);background:#F3F1FE}
.nav-links a.active{color:var(--brand);font-weight:800}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#6A3DF5,#16C8B8);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;border-radius:999px;border:1.5px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--text);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}
.icon-btn svg{width:18px;height:18px}
.drawer-btn{
  margin-left:auto;width:44px;height:44px;border-radius:14px;border:1.5px solid var(--line);
  background:#fff;display:inline-flex;align-items:center;justify-content:center;
}
.drawer-btn span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.drawer-btn span::before,.drawer-btn span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.drawer-btn span::before{top:-6px}
.drawer-btn span::after{top:6px}
.search-layer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:16px 0;
}
.search-layer.open{display:block}
.search-form{display:flex;gap:12px;align-items:center}
.search-form input{
  flex:1;height:48px;border-radius:var(--radius-sm);border:1.5px solid var(--line);
  padding:0 16px;font-size:15px;color:var(--text);background:#FBFAFE;
}
.search-form input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(22,200,184,.18)}
.search-hints{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;font-size:13px;color:var(--muted)}
.search-hints a{padding:4px 12px;border-radius:999px;background:#F3F1FE;color:#4E27CE;font-weight:600}
.search-hints a:hover{background:#E7E2FD}

.offcanvas{--bs-offcanvas-width:300px}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
.drawer-nav a{padding:12px 14px;border-radius:var(--radius-sm);font-weight:700;font-size:16px;background:#FBFAFE}
.drawer-nav a.active{background:#F3F1FE;color:var(--brand)}
.drawer-note{font-size:13px;color:var(--muted);margin-top:14px;line-height:1.7}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-muted)}
.crumb a{color:var(--ink-muted)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.5}
.crumb .now{color:#fff;font-weight:600}

/* ============ 文章头部 ============ */
.article-head{
  position:relative;background:var(--ink-900);color:var(--ink-text);
  padding:44px 0 60px;overflow:hidden;
}
.article-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.15) 1px,transparent 1px);
  background-size:24px 24px;opacity:.55;
}
.article-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 10% 18%,rgba(106,61,245,.48),transparent 44%),
    radial-gradient(circle at 88% 8%,rgba(22,200,184,.30),transparent 46%);
}
.article-head .wrap{position:relative;z-index:2}
.article-head h1{
  color:#fff;font-size:clamp(26px,3.4vw,44px);line-height:1.3;margin-top:18px;max-width:920px;
}
.article-head .lede{color:var(--ink-muted);font-size:15px;margin-top:14px;max-width:760px}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.6;
}
.pill-brand{background:linear-gradient(135deg,#6A3DF5,#16C8B8);color:#fff}
.pill-soft{background:#F3F1FE;color:#4E27CE}
.pill-dark{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.16)}
.pill-accent{background:rgba(255,179,60,.14);color:var(--accent);border:1px solid rgba(255,179,60,.34)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;font-size:14px;color:var(--ink-muted)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.32)}
.meta-row strong{color:#fff;font-weight:600}

/* ============ 正文布局 ============ */
.main-section{padding:56px 0 var(--sec)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:36px;box-shadow:var(--shadow-1);
}
.article-body{max-width:820px;line-height:1.85;font-size:16px}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:clamp(21px,2.3vw,28px);font-weight:800;margin:40px 0 16px;padding-left:16px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,#6A3DF5,#16C8B8);
}
.article-body h3{font-size:20px;font-weight:700;margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:#F3F1FE;border-left:3px solid var(--brand);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#423C6B;
}
.article-body blockquote p{margin:0}
.article-body ul,.article-body ol{padding-left:24px;margin:0 0 1.2em;list-style:revert}
.article-body ul li{margin-bottom:.5em;list-style:disc}
.article-body ol li{margin-bottom:.5em;list-style:decimal}
.article-body ul li::marker{color:var(--brand-2)}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body img{border-radius:16px;margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:8px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#4E27CE}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body thead th{background:#F6F5FC;font-weight:700}
.article-body tbody tr:nth-child(even){background:#FBFAFE}
.article-body hr{border:none;height:1px;background:linear-gradient(90deg,rgba(106,61,245,0),rgba(106,61,245,.5),rgba(22,200,184,0));margin:32px 0}

.empty-state{
  text-align:center;padding:64px 20px;border:1px dashed var(--line);border-radius:var(--radius-lg);background:#FBFAFE;
}
.empty-state .ico{
  width:56px;height:56px;border-radius:18px;margin:0 auto 16px;
  background:linear-gradient(135deg,#6A3DF5,#16C8B8);opacity:.9;
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:20px}

/* ============ 侧栏 ============ */
.side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;align-self:start}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:17px;font-weight:800;margin-bottom:10px}
.side-card p{font-size:14px;color:var(--muted);line-height:1.7}
.side-dark{
  background:var(--ink-800);border:1px solid rgba(255,255,255,.08);color:var(--ink-text);
  box-shadow:none;position:relative;overflow:hidden;
}
.side-dark::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 80% 0%,rgba(106,61,245,.5),transparent 60%);
}
.side-dark > *{position:relative;z-index:2}
.side-dark h3{color:#fff}
.side-dark p{color:var(--ink-muted)}
.num-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  border:1px solid rgba(255,179,60,.4);background:rgba(255,179,60,.12);
  color:var(--accent);font-weight:700;font-size:13px;
}
.num-badge b{font-size:16px;font-variant-numeric:tabular-nums}
.side-list{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.side-list a{
  display:block;padding:12px 14px;border-radius:var(--radius-sm);background:#FBFAFE;
  font-size:14px;font-weight:600;border:1px solid transparent;
}
.side-list a:hover{background:#F3F1FE;border-color:#DCD6FB;color:var(--brand)}
.side-tip{font-size:13px;color:var(--muted);margin-top:14px;line-height:1.7}

/* ============ 标签 ============ */
.tag-block{
  margin-top:36px;padding-top:28px;border-top:1px solid var(--line);
}
.tag-block h3{font-size:15px;font-weight:800;margin-bottom:14px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-list a{
  padding:8px 16px;border-radius:999px;background:#F3F1FE;color:#4E27CE;
  font-size:13px;font-weight:600;border:1px solid transparent;
}
.tag-list a:hover{background:linear-gradient(135deg,#6A3DF5,#16C8B8);color:#fff}

/* ============ 上下浏览 ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
.post-nav-item{
  display:block;padding:20px 22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
}
.post-nav-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D6CEFA}
.post-nav-item .pn-dir{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.post-nav-item .pn-title{display:block;font-size:16px;font-weight:700;color:var(--text)}
.post-nav-item:hover .pn-title{color:var(--brand)}
.post-nav-item.next{text-align:right}

/* ============ 相关内容 ============ */
.related{padding:var(--sec) 0 0}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head h2{font-size:clamp(22px,2.4vw,32px)}
.sec-head p{color:var(--muted);margin-top:12px;font-size:15px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card-lift{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card-lift:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D6CEFA}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#6A3DF5,#16C8B8)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card-lift:hover .card-cover img{transform:scale(1.03)}
.card-cover .cover-tag{
  position:absolute;left:14px;bottom:14px;z-index:2;
}
.card-cover::after{
  content:"";position:absolute;inset:auto 0 0 0;height:56%;pointer-events:none;
  background:linear-gradient(180deg,rgba(18,14,38,0),rgba(18,14,38,.7));
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;font-weight:700;line-height:1.5}
.card-lift:hover .card-body h3{color:var(--brand)}
.card-body p{font-size:14px;color:var(--muted);line-height:1.7}
.card-more{margin-top:auto;font-size:14px;font-weight:700;color:var(--brand)}

.back-row{margin-top:44px;text-align:center}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;margin-top:var(--sec);background:var(--ink-900);color:var(--ink-text);
  padding:64px 0;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:26px 26px;opacity:.5;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 6% 30%,rgba(106,61,245,.5),transparent 46%),
    radial-gradient(circle at 92% 70%,rgba(22,200,184,.34),transparent 44%);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px)}
.cta-inner p{color:var(--ink-muted);margin-top:12px;max-width:620px;font-size:15px}
.cta-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.cta-actions{display:flex;flex-direction:column;gap:12px;min-width:210px}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--ink-900);color:var(--ink-muted);padding:64px 0 28px;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.13) 1px,transparent 1px);
  background-size:26px 26px;opacity:.45;
}
.site-footer .wrap{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-about{font-size:14px;line-height:1.8;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;line-height:1.8;margin-bottom:8px}
.footer-line{height:1px;margin:36px 0 20px;background:linear-gradient(90deg,rgba(106,61,245,0),rgba(106,61,245,.55),rgba(22,200,184,.55),rgba(22,200,184,0))}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}

/* ============ 移动端底部条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;height:56px;
  background:rgba(18,14,38,.96);backdrop-filter:blur(10px);
  display:none;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
  border-top:1px solid rgba(255,255,255,.12);
}
.sticky-cta span{color:#fff;font-size:14px;font-weight:600}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:991.98px){
  :root{--sec:72px}
  .nav-links{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 260px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%;flex-direction:row;flex-wrap:wrap;min-width:0}
  .cta-actions .btn-base{flex:1 1 200px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .article-card{padding:26px}
  .sticky-cta{display:flex}
  body{padding-bottom:56px}
}
@media (max-width:767.98px){
  :root{--sec:56px}
  .brand-text{font-size:18px}
  .article-head{padding:32px 0 44px}
  .article-head h1{margin-top:14px}
  .main-section{padding:36px 0 var(--sec)}
  .article-card{padding:20px;border-radius:var(--radius-lg)}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .post-nav-item.next{text-align:left}
  .side{flex-direction:column}
  .side-card{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-col ul{gap:8px}
}
@media (max-width:519.98px){
  .wrap{padding:0 16px}
  .header-inner{height:60px}
  .cta-badges{gap:8px}
  .num-badge{padding:5px 12px}
}

/* roulang page: category1 */
:root{
  --ink-900:#120E26;
  --ink-800:#1C1740;
  --ink-700:#2A2358;
  --brand:#6A3DF5;
  --brand-2:#16C8B8;
  --brand-soft:#F3F1FE;
  --grad:linear-gradient(135deg,#6A3DF5 0%,#16C8B8 100%);
  --accent:#FFB33C;
  --bg:#F6F5FC;
  --card:#FFFFFF;
  --line:#E6E3F5;
  --text:#2A2740;
  --muted:#6B6885;
  --dtext:#EDEBFA;
  --dmuted:#A9A3CF;
  --ok:#22A06B;
  --warn:#E0653F;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --sh:0 12px 32px rgba(28,23,64,.10);
  --sh-h:0 18px 44px rgba(28,23,64,.16);
  --nav-h:68px;
  --sect:96px;

  --bs-primary:#6A3DF5;
  --bs-body-color:#2A2740;
  --bs-body-bg:#F6F5FC;
  --bs-link-color:#6A3DF5;
  --bs-link-hover-color:#4B27C4;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.015em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:#4B27C4;}
button{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{letter-spacing:.01em;color:var(--text);font-weight:700;margin:0;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){
  .wrap{max-width:1320px;}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(18,14,38,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{
  background:rgba(18,14,38,.98);
  box-shadow:0 10px 30px rgba(18,14,38,.35);
}
.nav-wrap{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-icon{
  width:28px;
  height:28px;
  border-radius:10px;
  background:var(--grad);
  position:relative;
  box-shadow:0 0 0 1px rgba(255,255,255,.14),0 6px 16px rgba(106,61,245,.45);
  flex:0 0 auto;
}
.brand-icon::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 30% 32%,rgba(255,255,255,.95) 0 1.6px,transparent 2px),
    radial-gradient(circle at 68% 26%,rgba(255,255,255,.7) 0 1.2px,transparent 1.8px),
    radial-gradient(circle at 56% 70%,rgba(255,255,255,.8) 0 1.4px,transparent 2px);
}
.brand-text{
  color:#fff;
  font-weight:800;
  font-size:20px;
  letter-spacing:.01em;
  white-space:nowrap;
}
@media (max-width:767.98px){
  .brand-text{font-size:18px;}
  .nav-wrap{height:60px;}
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-links a{
  position:relative;
  color:var(--dmuted);
  font-size:15px;
  font-weight:600;
  padding:8px 14px;
  border-radius:999px;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:3px;
  border-radius:999px;
  background:var(--grad);
}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.icon-btn{
  width:44px;
  height:44px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.04);
  color:var(--dtext);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3);transform:translateY(-1px);}
.btn-grad{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:10px 22px;
  border-radius:999px;
  border:0;
  color:#fff;
  font-weight:700;
  font-size:15px;
  background-image:var(--grad);
  background-size:180% 180%;
  background-position:0% 50%;
  box-shadow:0 10px 24px rgba(106,61,245,.35);
  transition:transform .2s ease,box-shadow .2s ease,background-position .25s ease;
}
.btn-grad:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(106,61,245,.45);
  background-position:60% 50%;
}
.btn-outline-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:10px 22px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.28);
  color:var(--dtext);
  font-weight:600;
  font-size:15px;
  background:transparent;
  transition:border-color .2s ease,background .2s ease,transform .2s ease,color .2s ease;
}
.btn-outline-ghost:hover{
  color:#fff;
  border-color:rgba(255,255,255,.55);
  background:rgba(255,255,255,.08);
  transform:translateY(-2px);
}
.btn-outline-ink{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:10px 22px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  font-weight:600;
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease,color .2s ease;
}
.btn-outline-ink:hover{
  color:var(--brand);
  border-color:#C9C1F2;
  box-shadow:var(--sh);
  transform:translateY(-2px);
}
.search-pop{
  position:absolute;
  right:24px;
  top:calc(var(--nav-h) + 8px);
  width:min(360px,calc(100vw - 48px));
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-h);
  padding:14px;
  display:none;
  z-index:1040;
}
.search-pop.open{display:block;}
.search-pop input{
  width:100%;
  height:46px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  padding:0 14px;
  font-size:15px;
  color:var(--text);
  background:#FBFAFF;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-pop input:focus{
  outline:none;
  border-color:var(--brand-2);
  box-shadow:0 0 0 3px rgba(22,200,184,.18);
}
.search-pop .hint{
  margin-top:10px;
  font-size:13px;
  color:var(--muted);
  line-height:1.6;
}
.search-pop .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.search-pop .chips span{
  font-size:13px;
  padding:4px 10px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-weight:600;
}

.drawer{
  background:var(--ink-900);
  color:var(--dtext);
  width:min(340px,88vw);
  border-left:1px solid rgba(255,255,255,.08);
}
.drawer .offcanvas-header{
  border-bottom:1px solid rgba(255,255,255,.08);
  padding:18px 20px;
}
.drawer .btn-close{filter:invert(1) grayscale(1) brightness(2);opacity:.7;}
.drawer .offcanvas-body{padding:20px;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer-nav a{
  color:var(--dmuted);
  font-weight:600;
  font-size:16px;
  padding:13px 14px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.drawer-nav a:hover{color:#fff;background:rgba(255,255,255,.06);}
.drawer-nav a.active{
  color:#fff;
  background:rgba(106,61,245,.18);
  border-color:rgba(106,61,245,.5);
}
.drawer .btn-grad{width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:
    radial-gradient(circle at 12% 18%,rgba(106,61,245,.28),transparent 46%),
    radial-gradient(circle at 88% 12%,rgba(22,200,184,.18),transparent 42%),
    radial-gradient(circle at 50% 120%,rgba(255,179,60,.10),transparent 50%),
    var(--ink-900);
  color:var(--dtext);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.5;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:6fr 5fr;
  gap:56px;
  align-items:center;
  padding:64px 0 88px;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--dmuted);
  margin-bottom:22px;
}
.crumb a{color:var(--dmuted);font-weight:600;}
.crumb a:hover{color:#fff;}
.crumb .sep{opacity:.5;}
.crumb .now{color:var(--dtext);font-weight:700;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  padding:6px 14px;
  border-radius:999px;
  color:#DCD6FF;
  background:rgba(106,61,245,.22);
  border:1px solid rgba(106,61,245,.5);
  margin-bottom:20px;
}
.hero h1{
  color:#fff;
  font-size:clamp(28px,4vw,52px);
  font-weight:800;
  line-height:1.22;
  margin-bottom:18px;
}
.hero h1 .hl{
  background:linear-gradient(135deg,#B79BFF 0%,#5FE6D8 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  color:var(--dmuted);
  font-size:17px;
  line-height:1.8;
  max-width:560px;
  margin-bottom:28px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.stat-row{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.stat{
  min-width:132px;
  padding:12px 18px;
  border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
}
.stat b{
  display:block;
  color:var(--accent);
  font-size:22px;
  font-weight:800;
  line-height:1.2;
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}
.stat span{font-size:13px;color:var(--dmuted);}
.hero-visual{position:relative;}
.hero-img{
  width:100%;
  aspect-ratio:5/4;
  border-radius:var(--r-lg);
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 30px 70px rgba(0,0,0,.45);
  position:relative;
  overflow:hidden;
}
.hero-img::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(18,14,38,.10) 0%,rgba(18,14,38,.72) 100%);
}
.float-card{
  position:absolute;
  left:-18px;
  bottom:-26px;
  width:min(280px,84%);
  background:#fff;
  border-radius:var(--r-md);
  padding:18px 20px;
  box-shadow:var(--sh-h);
  border:1px solid var(--line);
}
.float-card .fc-title{
  font-size:13px;
  font-weight:700;
  color:var(--muted);
  margin-bottom:12px;
}
.float-card .fc-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:8px 0;
  border-bottom:1px dashed var(--line);
  font-size:14px;
}
.float-card .fc-row:last-child{border-bottom:0;padding-bottom:0;}
.float-card .fc-row strong{
  color:var(--brand);
  font-weight:800;
  font-variant-numeric:tabular-nums;
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sect) 0;}
.section.tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.02em;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:3px;
  border-radius:999px;
  background:var(--grad);
}
.section-head.center .eyebrow{justify-content:center;}
.section-head h2{
  font-size:clamp(22px,2.4vw,34px);
  font-weight:800;
  line-height:1.35;
  margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:16px;}
.grad-line{
  height:1px;
  border:0;
  background:linear-gradient(90deg,rgba(106,61,245,.45),rgba(22,200,184,.35),transparent);
  margin:0;
}

/* ---------- 对比表 ---------- */
.cmp-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh);
  overflow:hidden;
}
.cmp-scroll{max-height:640px;overflow:auto;}
table.cmp-table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
  min-width:760px;
}
.cmp-table thead th{
  position:sticky;
  top:0;
  z-index:2;
  background:#FBFAFF;
  color:var(--ink-800);
  font-size:14.5px;
  font-weight:800;
  text-align:left;
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.cmp-table thead th.col-top{
  background:linear-gradient(135deg,rgba(106,61,245,.12),rgba(22,200,184,.12));
  color:var(--brand);
}
.cmp-table tbody th{
  text-align:left;
  font-weight:600;
  color:var(--text);
  padding:16px 22px;
  width:26%;
  border-bottom:1px solid var(--line);
  background:#fff;
}
.cmp-table tbody td{
  padding:16px 22px;
  color:var(--muted);
  border-bottom:1px solid var(--line);
  font-size:14.5px;
}
.cmp-table tbody td.cell-top{color:var(--text);font-weight:600;}
.cmp-table tbody tr{transition:background .18s ease;}
.cmp-table tbody tr:hover th,
.cmp-table tbody tr:hover td{background:var(--brand-soft);}
.cmp-table tbody tr:last-child th,
.cmp-table tbody tr:last-child td{border-bottom:0;}
.tick{color:var(--ok);font-weight:700;}
.muted-mark{color:#A7A3BE;}
.cmp-note{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:16px 22px;
  background:#FBFAFF;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
}
.cmp-note i{color:var(--brand);margin-top:4px;}

.cmp-cards{display:grid;gap:18px;}
.cmp-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh);
  overflow:hidden;
}
.cmp-card .cc-top{height:6px;background:var(--grad);}
.cmp-card.is-top{border-color:rgba(255,179,60,.65);}
.cmp-card.is-top .cc-top{background:linear-gradient(135deg,#FFB33C,#6A3DF5);}
.cmp-card .cc-head{
  padding:20px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.cmp-card .cc-head h3{font-size:19px;font-weight:800;}
.cmp-card .cc-body{padding:8px 20px 20px;}
.cmp-card .cc-row{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:12px 0;
  border-bottom:1px dashed var(--line);
  font-size:14.5px;
}
.cmp-card .cc-row:last-child{border-bottom:0;}
.cmp-card .cc-row span{color:var(--muted);flex:0 0 44%;}
.cmp-card .cc-row b{color:var(--text);font-weight:600;text-align:right;}

.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:700;
  padding:5px 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.badge-pill.amber{
  background:rgba(255,179,60,.16);
  color:#9A6209;
}
.badge-pill.teal{
  background:rgba(22,200,184,.14);
  color:#0E7A70;
}

/* ---------- 等级明细 ---------- */
.tier-list{display:grid;gap:22px;}
.tier{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh);
  display:grid;
  grid-template-columns:64px 1fr;
  gap:24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.tier:hover{transform:translateY(-4px);box-shadow:var(--sh-h);}
.tier-num{
  width:56px;
  height:56px;
  border-radius:var(--r-sm);
  background:var(--grad);
  color:#fff;
  font-weight:800;
  font-size:19px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-variant-numeric:tabular-nums;
  box-shadow:0 10px 24px rgba(106,61,245,.32);
}
.tier h3{
  font-size:20px;
  font-weight:800;
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.tier p{color:var(--muted);font-size:15.5px;}
.tier ul{display:grid;gap:8px;margin-top:14px;}
.tier ul li{
  position:relative;
  padding-left:24px;
  font-size:15px;
  color:var(--text);
}
.tier ul li::before{
  content:"";
  position:absolute;
  left:4px;
  top:12px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--brand-2);
}

/* ---------- 适用场景 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:start;
}
.scene{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease;
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--sh-h);}
.scene:nth-child(2){margin-top:28px;}
.scene-img{
  aspect-ratio:16/10;
  overflow:hidden;
  position:relative;
}
.scene-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.scene:hover .scene-img img{transform:scale(1.03);}
.scene-img .tag{
  position:absolute;
  left:14px;
  bottom:14px;
  background:rgba(18,14,38,.78);
  color:#fff;
  font-size:12.5px;
  font-weight:700;
  padding:5px 12px;
  border-radius:999px;
  backdrop-filter:blur(4px);
}
.scene-body{padding:22px;}
.scene-body h3{font-size:18px;font-weight:800;margin-bottom:10px;}
.scene-body p{color:var(--muted);font-size:15px;}

/* ---------- 开通流程 ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:step;
}
.flow-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px;
  box-shadow:var(--sh);
  position:relative;
}
.flow-item .fnum{
  width:38px;
  height:38px;
  border-radius:12px;
  background:var(--brand-soft);
  color:var(--brand);
  font-weight:800;
  font-size:15px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.flow-item h3{font-size:17px;font-weight:800;margin-bottom:8px;}
.flow-item p{color:var(--muted);font-size:14.5px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion-item{
  border:0;
  background:transparent;
  margin-bottom:12px;
}
.accordion-button{
  background:#fff;
  color:var(--text);
  font-size:17px;
  font-weight:700;
  padding:20px 22px;
  border-radius:var(--r-md)!important;
  border:1px solid var(--line);
  box-shadow:var(--sh);
  transition:background .2s ease,color .2s ease;
}
.accordion-button:not(.collapsed){
  background:#F3F1FE;
  color:var(--brand);
  box-shadow:none;
  border-color:#D9D2F8;
}
.accordion-button:focus{
  box-shadow:0 0 0 3px rgba(22,200,184,.18);
  border-color:var(--brand-2);
}
.accordion-button::after{
  background-image:none;
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  color:var(--brand);
  font-size:14px;
  width:30px;
  height:30px;
  border-radius:50%;
  background-color:var(--brand-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform .25s ease,background-color .25s ease;
  flex:0 0 30px;
}
.accordion-button:not(.collapsed)::after{
  content:"\f068";
  transform:rotate(180deg);
  background-color:#fff;
}
.accordion-body{
  padding:18px 22px 6px;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.8;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:
    radial-gradient(circle at 15% 20%,rgba(255,255,255,.16),transparent 42%),
    var(--grad);
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  box-shadow:0 26px 60px rgba(106,61,245,.32);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.45;
  pointer-events:none;
}
.cta-band > *{position:relative;}
.cta-band h2{
  color:#fff;
  font-size:clamp(22px,2.2vw,32px);
  font-weight:800;
  margin-bottom:14px;
}
.cta-chips{display:flex;flex-wrap:wrap;gap:10px;}
.cta-chips span{
  font-size:13px;
  font-weight:700;
  color:#fff;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.32);
  font-variant-numeric:tabular-nums;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}
.btn-white{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:12px 26px;
  border-radius:999px;
  background:#fff;
  color:var(--brand);
  font-weight:800;
  font-size:15px;
  border:0;
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn-white:hover{color:var(--brand);transform:translateY(-2px);box-shadow:0 16px 34px rgba(18,14,38,.28);}
.btn-line{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:12px 26px;
  border-radius:999px;
  background:transparent;
  color:#fff;
  font-weight:700;
  font-size:15px;
  border:1px solid rgba(255,255,255,.55);
  transition:background .2s ease,transform .2s ease;
}
.btn-line:hover{color:#fff;background:rgba(255,255,255,.14);transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--ink-900);
  color:var(--dmuted);
  margin-top:var(--sect);
  padding:72px 0 28px;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.13) 1px,transparent 1px);
  background-size:28px 28px;
  opacity:.4;
  pointer-events:none;
}
.site-footer .wrap{position:relative;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:19px;}
.footer-about{font-size:14.5px;line-height:1.85;color:var(--dmuted);}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:800;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  color:var(--dmuted);
  font-size:14.5px;
  position:relative;
}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14.5px;line-height:1.85;margin-bottom:8px;}
.footer-line{
  height:1px;
  margin:40px 0 22px;
  background:linear-gradient(90deg,rgba(106,61,245,.6),rgba(22,200,184,.4),transparent);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:13.5px;
  color:#8782A8;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sect:72px;}
  .hero-inner{gap:40px;padding:52px 0 76px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .scene:nth-child(2){margin-top:0;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:991.98px){
  .hero-inner{grid-template-columns:1fr;padding:44px 0 64px;}
  .hero-visual{order:-1;}
  .hero-img{aspect-ratio:16/10;}
  .float-card{left:auto;right:16px;bottom:-20px;width:min(260px,80%);}
  .tier{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .cta-actions{width:100%;}
}
@media (max-width:767.98px){
  :root{--sect:56px;}
  .wrap{padding:0 18px;}
  .hero-inner{padding:36px 0 56px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn-grad,
  .hero-cta .btn-outline-ghost{width:100%;}
  .stat-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
  .stat{min-width:0;}
  .scene-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .section-head{margin-bottom:32px;}
  .tier{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .cta-band{padding:32px 22px;border-radius:var(--r-md);}
  .cta-actions .btn-white,
  .cta-actions .btn-line{width:100%;}
}
@media (max-width:519.98px){
  .hero h1{font-size:28px;}
  .stat b{font-size:20px;}
  .accordion-button{font-size:15.5px;padding:16px 18px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --ink-900:#120E26;
  --ink-800:#1C1740;
  --ink-700:#2A2358;
  --brand:#6A3DF5;
  --brand-2:#16C8B8;
  --accent:#FFB33C;
  --bg:#F6F5FC;
  --card:#FFFFFF;
  --line:#E6E3F5;
  --text:#2A2740;
  --muted:#6B6885;
  --ink-text:#EDEBFA;
  --ink-muted:#A9A3CF;
  --grad:linear-gradient(135deg,#6A3DF5 0%,#16C8B8 100%);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:14px;
  --shadow-1:0 12px 32px rgba(28,23,64,.10);
  --shadow-2:0 18px 44px rgba(28,23,64,.16);
  --bs-primary:#6A3DF5;
  --bs-primary-rgb:106,61,245;
  --bs-link-color:#6A3DF5;
  --bs-link-hover-color:#4A2CD0;
  --bs-border-radius:14px;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.015em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button{font-family:inherit}
h1,h2,h3,h4{letter-spacing:.01em;color:var(--text);margin:0;font-weight:800;line-height:1.35}
p{margin:0 0 14px}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){
  .wrap{max-width:1320px}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1035;
  background:rgba(18,14,38,.80);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(18,14,38,.97);
  box-shadow:0 12px 32px rgba(10,7,26,.42);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-icon{
  position:relative;
  width:28px;height:28px;
  border-radius:10px;
  background:var(--grad);
  box-shadow:0 6px 16px rgba(106,61,245,.45);
  flex:0 0 auto;
}
.brand-icon::after{
  content:"";
  position:absolute;inset:0;
  border-radius:10px;
  background:
    radial-gradient(circle at 30% 30%,#fff 0 1.9px,transparent 2px),
    radial-gradient(circle at 70% 62%,#fff 0 1.4px,transparent 1.6px),
    radial-gradient(circle at 46% 76%,#fff 0 1.1px,transparent 1.4px);
  opacity:.92;
}
.brand-text{
  color:#fff;
  font-size:20px;
  font-weight:800;
  letter-spacing:.01em;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-links a{
  position:relative;
  padding:9px 14px;
  border-radius:999px;
  color:var(--ink-muted);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-links a.active{color:#fff}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--grad);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.20);
  background:rgba(255,255,255,.05);
  color:var(--ink-text);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.34);transform:translateY(-1px)}
.nav-toggle{
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;justify-content:center;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.20);
  background:rgba(255,255,255,.05);
  color:#fff;
}

/* 搜索浮层 */
.search-layer{
  position:absolute;
  left:0;right:0;top:100%;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 22px 40px rgba(18,14,38,.16);
  display:none;
  padding:20px 0 24px;
}
.search-layer.is-open{display:block}
.search-inner{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.search-field{
  position:relative;
  flex:1 1 320px;
}
.search-field i{
  position:absolute;
  left:16px;top:50%;
  transform:translateY(-50%);
  color:var(--muted);
}
.search-field input{
  width:100%;
  min-height:48px;
  padding:0 16px 0 44px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:#FBFAFF;
  color:var(--text);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-field input:focus{
  outline:none;
  border-color:var(--brand-2);
  box-shadow:0 0 0 3px rgba(22,200,184,.18);
}
.search-tips{display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-size:13.5px;color:var(--muted)}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 13px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--muted);
  font-size:13px;
  font-weight:600;
  transition:all .2s ease;
}
.chip:hover{border-color:rgba(106,61,245,.45);color:var(--brand);background:#F5F2FF}

/* 移动抽屉 */
.nav-drawer{
  background:var(--ink-900);
  color:var(--ink-text);
  width:308px;
  border-left:1px solid rgba(255,255,255,.08);
}
.nav-drawer .offcanvas-header{
  padding:20px 22px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-drawer .offcanvas-title{color:#fff;font-size:17px;font-weight:800}
.nav-drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.8)}
.drawer-nav{display:flex;flex-direction:column;gap:8px;padding:20px 22px}
.drawer-nav a{
  padding:13px 16px;
  border-radius:var(--radius-sm);
  color:var(--ink-muted);
  font-weight:600;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.06);
}
.drawer-nav a.active{color:#fff;border-color:rgba(106,61,245,.6);background:rgba(106,61,245,.20)}
.drawer-foot{padding:0 22px 26px}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-position .25s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  text-align:center;
}
.btn-primary-x{
  background-image:linear-gradient(135deg,#6A3DF5 0%,#16C8B8 100%);
  background-size:170% 170%;
  background-position:0 50%;
  color:#fff;
  box-shadow:0 12px 26px rgba(106,61,245,.32);
}
.btn-primary-x:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 18px 36px rgba(106,61,245,.44);
  background-position:80% 50%;
}
.btn-ghost-x{
  color:#fff;
  border-color:rgba(255,255,255,.30);
  background:rgba(255,255,255,.04);
}
.btn-ghost-x:hover{color:#fff;border-color:rgba(255,255,255,.62);background:rgba(255,255,255,.10);transform:translateY(-2px)}
.btn-outline-x{
  background:#fff;
  border-color:rgba(106,61,245,.42);
  color:#4A2CD0;
}
.btn-outline-x:hover{background:#F5F2FF;border-color:var(--brand);transform:translateY(-2px);color:#3D22B3}
.btn-sm-x{min-height:40px;padding:0 18px;font-size:14.5px}

/* ---------- Hero ---------- */
.doc-hero{
  position:relative;
  overflow:hidden;
  background-color:var(--ink-900);
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
  color:var(--ink-text);
  padding:66px 0 62px;
}
.doc-hero::before{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 12% 18%,rgba(106,61,245,.52),transparent 56%),
    radial-gradient(circle at 84% 8%,rgba(22,200,184,.34),transparent 52%),
    linear-gradient(180deg,rgba(18,14,38,.60),rgba(18,14,38,.94));
}
.doc-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:
    radial-gradient(circle,rgba(255,255,255,.30) 0 1px,transparent 1.4px),
    radial-gradient(circle,rgba(255,255,255,.16) 0 1px,transparent 1.4px);
  background-size:110px 110px,170px 170px;
  background-position:0 0,52px 68px;
  opacity:.5;
  pointer-events:none;
}
.doc-hero .wrap{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-muted);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--ink-muted)}
.crumb a:hover{color:#fff}
.crumb span.sep{color:rgba(169,163,207,.55)}
.crumb .now{color:#fff;font-weight:600}
.hero-grid{
  display:grid;
  grid-template-columns:1.18fr .82fr;
  gap:44px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(22,200,184,.45);
  background:rgba(22,200,184,.12);
  color:#8FF2E6;
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
}
.doc-hero h1{
  color:#fff;
  font-size:clamp(28px,4vw,52px);
  font-weight:800;
  letter-spacing:.01em;
  margin-bottom:16px;
}
.doc-hero .lede{
  color:var(--ink-muted);
  font-size:16.5px;
  line-height:1.8;
  max-width:620px;
  margin-bottom:26px;
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-stats{display:flex;gap:14px;flex-wrap:wrap}
.stat{
  min-width:132px;
  padding:14px 18px;
  border-radius:var(--radius-sm);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:inset 0 0 0 1px rgba(106,61,245,.12);
}
.stat b{
  display:block;
  color:var(--accent);
  font-size:22px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat span{display:block;font-size:13px;color:var(--ink-muted);margin-top:4px;font-weight:600}
.quick-card{
  background:rgba(28,23,64,.72);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius-lg);
  padding:26px;
  box-shadow:0 0 0 1px rgba(106,61,245,.14),0 22px 50px rgba(10,7,26,.34);
  backdrop-filter:blur(6px);
}
.quick-card h2{
  color:#fff;
  font-size:17px;
  font-weight:800;
  margin-bottom:6px;
}
.quick-card p{color:var(--ink-muted);font-size:14px;margin-bottom:16px}
.quick-list{display:flex;flex-direction:column;gap:8px}
.quick-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 14px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.09);
  background:rgba(255,255,255,.03);
  color:var(--ink-text);
  font-size:14.5px;
  font-weight:600;
  transition:all .2s ease;
}
.quick-list a:hover{
  border-color:rgba(106,61,245,.62);
  background:rgba(106,61,245,.20);
  color:#fff;
  transform:translateX(3px);
}
.quick-list i{color:var(--brand-2);font-size:12.5px}

/* ---------- 文档主体 ---------- */
.doc-main{padding:76px 0 84px}
.doc-layout{
  display:grid;
  grid-template-columns:264px minmax(0,1fr);
  gap:44px;
  align-items:start;
}
.toc{
  position:sticky;
  top:96px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px 18px;
  box-shadow:var(--shadow-1);
}
.toc h2{
  font-size:14px;
  color:var(--muted);
  font-weight:700;
  letter-spacing:.06em;
  padding:0 12px 12px;
  margin-bottom:8px;
  border-bottom:1px solid var(--line);
}
.toc a{
  position:relative;
  display:block;
  padding:10px 12px 10px 16px;
  border-radius:var(--radius-sm);
  font-size:14.5px;
  font-weight:600;
  color:var(--muted);
  transition:all .2s ease;
}
.toc a:hover{background:#F5F2FF;color:var(--brand)}
.toc a.active{background:#F3F1FE;color:var(--brand)}
.toc a.active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:3px;
  background:var(--grad);
}
.toc-foot{
  margin-top:16px;
  padding:16px 12px 4px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
}
.toc-foot a{color:var(--brand);font-weight:700;padding:0;display:inline}
.toc-foot a:hover{background:none}

.article-body{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:38px 42px 42px;
  max-width:860px;
}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.1vw,26px);
  font-weight:800;
  padding-left:15px;
  margin:42px 0 16px;
  scroll-margin-top:100px;
}
.article-body h2:first-of-type{margin-top:6px}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;bottom:.24em;
  width:4px;
  border-radius:4px;
  background:var(--grad);
}
.article-body h3{
  font-size:17.5px;
  font-weight:700;
  margin:26px 0 10px;
  color:var(--ink-800);
}
.article-body p{color:#3A3757;margin-bottom:14px}
.article-body strong{color:var(--ink-800);font-weight:700}
.rule-list{display:flex;flex-direction:column;gap:12px;margin:6px 0 18px}
.rule-list li{
  display:flex;
  gap:14px;
  padding:15px 18px;
  border-radius:var(--radius-sm);
  background:#FBFAFF;
  border:1px solid var(--line);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.rule-list li:hover{border-color:rgba(106,61,245,.38);background:#F7F4FF;transform:translateY(-2px)}
.num{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:8px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(106,61,245,.12);
  color:var(--brand);
  font-size:12.5px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  margin-top:2px;
}
.rule-list .txt{font-size:15px;color:#3A3757}
.rule-list .txt b{display:block;color:var(--ink-800);font-weight:700;margin-bottom:2px;font-size:15.5px}

.note{
  border-left:3px solid var(--brand);
  background:#F5F2FF;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:16px 20px;
  margin:18px 0 22px;
  font-size:14.8px;
  color:#3A3757;
}
.note b{color:var(--brand);font-weight:700}

.figure-card{
  margin:28px 0 8px;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:#fff;
  box-shadow:var(--shadow-1);
}
.figure-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.figure-card figcaption{
  padding:18px 22px 20px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
  border-top:1px solid var(--line);
}
.figure-card figcaption b{color:var(--ink-800);display:block;font-size:15px;margin-bottom:4px;font-weight:700}
.flow-steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
  margin:22px 0 6px;
}
.flow-steps .step{
  padding:16px 16px 18px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:#FBFAFF;
}
.flow-steps .step em{
  font-style:normal;
  display:inline-block;
  font-size:12px;
  font-weight:800;
  color:var(--brand);
  background:rgba(106,61,245,.12);
  border-radius:999px;
  padding:2px 10px;
  margin-bottom:8px;
  font-variant-numeric:tabular-nums;
}
.flow-steps .step b{display:block;font-size:15px;color:var(--ink-800);margin-bottom:4px}
.flow-steps .step span{font-size:13.5px;color:var(--muted);line-height:1.65;display:block}

/* ---------- FAQ ---------- */
.faq-section{padding:0 0 84px}
.section-head{max-width:720px;margin-bottom:30px}
.section-head h2{
  font-size:clamp(22px,2.4vw,34px);
  font-weight:800;
  margin-bottom:12px;
}
.section-head p{color:var(--muted);font-size:15.5px;margin:0}
.faq-wrap{max-width:860px}
.faq-list .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:#fff;
  overflow:hidden;
  margin-bottom:12px;
  box-shadow:0 6px 18px rgba(28,23,64,.06);
}
.faq-list .accordion-item:last-child{margin-bottom:0}
.faq-list .accordion-button{
  font-size:17px;
  font-weight:700;
  color:var(--ink-800);
  padding:20px 56px 20px 22px;
  background:#fff;
  box-shadow:none;
  border-radius:var(--radius-md);
}
.faq-list .accordion-button:not(.collapsed){
  background:#F3F1FE;
  color:var(--brand);
}
.faq-list .accordion-button::after{
  display:none;
}
.faq-list .accordion-button .sign{
  position:absolute;
  right:20px;top:50%;
  transform:translateY(-50%);
  width:30px;height:30px;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand);
  font-size:15px;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-list .accordion-button:not(.collapsed) .sign{
  background:var(--grad);
  color:#fff;
  border-color:transparent;
  transform:translateY(-50%) rotate(180deg);
}
.faq-list .accordion-body{
  padding:2px 22px 22px;
  color:#3A3757;
  font-size:15px;
  background:#fff;
}
.faq-list .accordion-button:focus{box-shadow:none;outline:none}
.faq-list .accordion-button:focus-visible{outline:2px solid var(--brand-2);outline-offset:-3px}

/* ---------- 返回入口 ---------- */
.back-links{padding:0 0 84px}
.back-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.back-card{
  display:flex;
  align-items:center;
  gap:18px;
  padding:24px 26px;
  border-radius:var(--radius-lg);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.back-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(106,61,245,.36)}
.back-card .ico{
  width:48px;height:48px;flex:0 0 auto;
  border-radius:var(--radius-sm);
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(106,61,245,.12);
  color:var(--brand);
  font-size:18px;
}
.back-card b{display:block;font-size:16.5px;color:var(--ink-800);font-weight:700;margin-bottom:2px}
.back-card span{font-size:13.5px;color:var(--muted);display:block}
.back-card .arrow{margin-left:auto;color:var(--muted)}

/* ---------- CTA 带 ---------- */
.cta-band-wrap{padding:0 0 92px}
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:28px;
  padding:40px 44px;
  background-image:linear-gradient(135deg,#6A3DF5 0%,#4A2CD0 46%,#16C8B8 100%);
  color:#fff;
  display:flex;
  align-items:center;
  gap:32px;
  justify-content:space-between;
  box-shadow:0 24px 52px rgba(74,44,208,.30);
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.35) 0 1px,transparent 1.5px);
  background-size:96px 96px;
  opacity:.32;
  pointer-events:none;
}
.cta-band .cta-copy{position:relative;z-index:1;max-width:660px}
.cta-band h2{color:#fff;font-size:clamp(20px,2.2vw,28px);font-weight:800;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;margin:0 0 16px}
.cta-badges{display:flex;gap:10px;flex-wrap:wrap}
.cta-badges span{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  font-size:13px;font-weight:600;
  font-variant-numeric:tabular-nums;
}
.cta-band .cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}
.btn-white{
  background:#fff;
  color:#3D22B3;
  box-shadow:0 14px 30px rgba(18,14,38,.22);
}
.btn-white:hover{color:#3D22B3;transform:translateY(-2px);box-shadow:0 20px 38px rgba(18,14,38,.28)}
.btn-line-light{
  border-color:rgba(255,255,255,.62);
  color:#fff;
  background:rgba(255,255,255,.06);
}
.btn-line-light:hover{color:#fff;background:rgba(255,255,255,.16);border-color:#fff;transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--ink-900);
  color:var(--ink-muted);
  padding:66px 0 26px;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    radial-gradient(circle,rgba(255,255,255,.18) 0 1px,transparent 1.4px),
    radial-gradient(circle,rgba(106,61,245,.42),transparent 56%);
  background-size:130px 130px,auto;
  background-position:10px 16px,120% 0%;
  opacity:.55;
  pointer-events:none;
}
.site-footer .wrap{position:relative;z-index:1}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{font-size:19px;color:#fff;font-weight:800}
.footer-about{font-size:14px;line-height:1.8;color:var(--ink-muted);margin:0}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:14px;color:var(--ink-muted)}
.footer-col ul a:hover{color:#fff}
.footer-col p{font-size:14px;color:var(--ink-muted);margin:0 0 8px}
.footer-line{
  height:1px;
  margin:36px 0 18px;
  background:linear-gradient(90deg,rgba(106,61,245,0),rgba(106,61,245,.62),rgba(22,200,184,.62),rgba(22,200,184,0));
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(169,163,207,.86);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .doc-layout{grid-template-columns:232px minmax(0,1fr);gap:32px}
  .article-body{padding:32px 30px 34px}
}
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .doc-hero{padding:52px 0 50px}
  .doc-layout{grid-template-columns:1fr;gap:28px}
  .toc{position:static;top:auto}
  .article-body{max-width:none}
  .flow-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px}
  .doc-main{padding:56px 0 60px}
  .back-links,.faq-section{padding-bottom:64px}
  .cta-band-wrap{padding-bottom:72px}
}
@media (max-width:767px){
  .brand-text{font-size:18px}
  .header-inner{height:60px;gap:14px}
  .doc-hero h1{font-size:clamp(28px,7vw,34px)}
  .doc-hero .lede{font-size:15.5px}
  .hero-cta .btn-x{width:100%}
  .hero-stats .stat{flex:1 1 calc(50% - 7px);min-width:0}
  .back-grid{grid-template-columns:1fr}
  .article-body{padding:26px 20px 28px;border-radius:var(--radius-md)}
  .toc{padding:18px 14px}
  .faq-list .accordion-button{font-size:16px;padding:18px 52px 18px 18px}
  .cta-band{border-radius:22px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn-x{width:100%}
}
@media (max-width:575px){
  .wrap{padding:0 18px}
  .doc-main{padding:44px 0 50px}
  .flow-steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .stat b{font-size:20px}
  .section-head h2{font-size:23px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important;animation:none !important}
  .btn-x:hover,.back-card:hover,.rule-list li:hover,.quick-list a:hover{transform:none !important}
}

/* roulang page: category2 */
:root{
  --ink-900:#120E26;
  --ink-800:#1C1740;
  --ink-700:#2A2358;
  --brand:#6A3DF5;
  --brand-2:#16C8B8;
  --accent:#FFB33C;
  --bg:#F6F5FC;
  --card:#FFFFFF;
  --line:#E6E3F5;
  --text:#2A2740;
  --muted:#6B6885;
  --on-dark:#EDEBFA;
  --on-dark-muted:#A9A3CF;
  --grad:linear-gradient(135deg,#6A3DF5 0%,#16C8B8 100%);
  --grad-soft:linear-gradient(135deg,rgba(106,61,245,.12),rgba(22,200,184,.12));
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --sh-1:0 12px 32px rgba(28,23,64,.10);
  --sh-2:0 18px 44px rgba(28,23,64,.16);
  --bs-primary:#6A3DF5;
  --bs-body-color:#2A2740;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-border-radius:14px;
  --bs-link-color:#5430D6;
  --bs-link-hover-color:#3F22B5;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.015em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:#5430D6;text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease}
a:hover{color:#3F22B5}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.01em;color:var(--text)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,.chip:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:12px}
::selection{background:rgba(106,61,245,.22)}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ---------- 通用按钮 ---------- */
.btn-brand,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 26px;border-radius:999px;font-weight:700;font-size:15px;
  border:0;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-brand{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(106,61,245,.28)}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(106,61,245,.36)}
.btn-ghost{background:transparent;color:var(--on-dark);border:1px solid rgba(255,255,255,.30)}
.btn-ghost:hover{background:rgba(255,255,255,.10);color:#fff;transform:translateY(-2px)}
.btn-line{background:#fff;color:var(--text);border:1px solid var(--line)}
.btn-line:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-brand.btn-compact{min-height:40px;padding:0 18px;font-size:14px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(18,14,38,.94);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{background:rgba(18,14,38,.99);box-shadow:0 12px 30px rgba(10,8,24,.45)}
.header-inner{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:20px;line-height:1}
.brand:hover{color:#fff}
.brand-icon{
  position:relative;width:28px;height:28px;border-radius:10px;background:var(--grad);flex:0 0 28px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);
}
.brand-icon::after{
  content:"";position:absolute;inset:0;border-radius:10px;
  background:
    radial-gradient(circle at 30% 28%,rgba(255,255,255,.95) 1.4px,transparent 2px),
    radial-gradient(circle at 66% 64%,rgba(255,255,255,.8) 1.4px,transparent 2px),
    radial-gradient(circle at 74% 26%,rgba(255,255,255,.6) 1px,transparent 1.6px);
}
.nav-links{gap:4px;margin-left:6px}
.nav-links a{
  position:relative;color:var(--on-dark-muted);font-size:15px;font-weight:600;
  padding:8px 14px;border-radius:999px;transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-links a.active{color:#fff}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:var(--grad);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;border-radius:999px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.05);color:var(--on-dark);display:inline-flex;align-items:center;justify-content:center;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px)}
.search-wrap{position:relative}
.search-pop{
  position:absolute;right:0;top:calc(100% + 12px);width:360px;background:#fff;color:var(--text);
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-2);padding:18px;z-index:1100;
}
.search-pop form{display:flex;gap:10px}
.search-pop input{
  flex:1 1 auto;min-width:0;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:0 14px;background:#FBFAFF;transition:border-color .2s ease,box-shadow .2s ease;
}
.search-pop input:focus{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(22,200,184,.18);outline:none}
.search-tips{margin-top:14px;font-size:13.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.search-tips a{background:var(--grad-soft);color:#4A2BD0;padding:4px 12px;border-radius:999px;font-weight:600}
.search-tips a:hover{color:#2F1A9E}
.drawer{background:var(--ink-800);color:var(--on-dark);width:310px;border-left:1px solid rgba(255,255,255,.08)}
.drawer .offcanvas-header{border-bottom:1px solid rgba(255,255,255,.08);padding:18px 20px}
.drawer .offcanvas-body{padding:20px}
.drawer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px}
.drawer-nav{display:grid;gap:6px;margin-bottom:22px}
.drawer-nav a{color:var(--on-dark-muted);font-weight:600;font-size:16px;padding:13px 16px;border-radius:var(--r-sm);border-left:3px solid transparent}
.drawer-nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.drawer-nav a.active{background:rgba(106,61,245,.18);color:#fff;border-left-color:var(--brand-2)}

/* ---------- 首屏 ---------- */
.page-hero{position:relative;background:var(--ink-900);color:var(--on-dark);overflow:hidden;padding:58px 0 84px}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:26px 26px;opacity:.45;
}
.hero-aurora{
  position:absolute;top:-160px;right:-120px;width:620px;height:620px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle at 40% 40%,rgba(106,61,245,.45),rgba(22,200,184,.18) 45%,rgba(18,14,38,0) 70%);
  filter:blur(10px);
}
.hero-grid{position:relative;display:grid;grid-template-columns:6fr 5fr;gap:52px;align-items:center}
.crumbs{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:14px;color:var(--on-dark-muted);margin-bottom:20px}
.crumbs a{color:var(--on-dark-muted)}
.crumbs a:hover{color:#fff}
.crumbs .sep{color:rgba(169,163,207,.55)}
.hero-title{font-size:clamp(28px,4vw,52px);line-height:1.18;color:#fff;max-width:640px}
.hero-sub{margin:20px 0 30px;max-width:560px;font-size:17px;line-height:1.8;color:var(--on-dark-muted)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:36px;max-width:560px}
.stat{
  padding:16px 18px;border-radius:var(--r-md);
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:inset 0 0 0 1px rgba(106,61,245,.12);
}
.stat b{display:block;font-size:24px;line-height:1.25;color:var(--accent);font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:var(--on-dark-muted)}
.hero-visual{position:relative}
.hero-visual img{width:100%;height:390px;object-fit:cover;border-radius:var(--r-lg);border:1px solid rgba(255,255,255,.10)}
.float-card{
  position:absolute;left:-20px;bottom:26px;background:#fff;color:var(--text);
  border-radius:var(--r-md);padding:16px 20px;box-shadow:var(--sh-2);min-width:210px;
  border:1px solid rgba(106,61,245,.14);
}
.float-label{display:block;font-size:12.5px;font-weight:700;color:var(--brand);letter-spacing:.04em}
.float-card strong{display:block;font-size:16px;margin:6px 0 4px}
.float-note{display:block;font-size:12.5px;color:var(--muted)}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section-alt{background:#fff}
.section-dark{position:relative;background:var(--ink-900);color:var(--on-dark);overflow:hidden;padding:88px 0}
.section-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:28px 28px;opacity:.4;
}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,2.4vw,34px);margin-bottom:14px}
.section-head p{color:var(--muted)}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:var(--on-dark-muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.06em;
  background:var(--grad-soft);padding:6px 14px;border-radius:999px;
}
.section-dark .eyebrow{color:#D9D2FF;background:rgba(255,255,255,.08)}

/* ---------- 筛选 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:12px}
.chip{
  display:inline-flex;align-items:center;min-height:44px;padding:0 20px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--muted);font-size:14.5px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease,background .2s ease;
}
.chip:hover{color:var(--brand);border-color:#CFC6F9;transform:translateY(-2px);box-shadow:var(--sh-1)}
.chip.active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 10px 24px rgba(106,61,245,.26)}
.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
.strip-card{
  display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 24px;transition:transform .2s ease,box-shadow .2s ease;
}
.strip-card:hover{transform:translateY(-3px);box-shadow:var(--sh-1)}
.strip-card .num{font-size:28px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1}
.strip-text strong{display:block;font-size:16px}
.strip-text span{font-size:13.5px;color:var(--muted)}

/* ---------- 栏目卡片网格 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.topic-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DCD4FA}
.topic-media{position:relative;display:block;aspect-ratio:16/9;overflow:hidden}
.topic-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.topic-card:hover .topic-media img{transform:scale(1.03)}
.topic-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(18,14,38,0) 42%,rgba(18,14,38,.74) 100%);
}
.topic-tag{
  position:absolute;left:16px;bottom:14px;z-index:2;
  display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;
  font-size:12.5px;font-weight:700;color:#fff;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.34);backdrop-filter:blur(2px);
}
.topic-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.topic-body h3{font-size:18px;line-height:1.5}
.topic-body h3 a{color:var(--text)}
.topic-body h3 a:hover{color:var(--brand)}
.topic-body p{margin:10px 0 18px;font-size:14.5px;color:var(--muted);flex:1 1 auto}
.topic-foot{display:flex;align-items:center;justify-content:space-between;gap:12px}
.lock-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;
  color:#8A5A12;background:#FFF4E0;border:1px solid #FFE0AE;padding:5px 12px;border-radius:999px;
}
.lock-badge.free{color:#0E6F63;background:#E6FAF7;border-color:#B7EDE6}
.lock-badge.open{color:#4A2BD0;background:#F0ECFE;border-color:#DAD1FB}
.topic-foot .more{font-size:13.5px;font-weight:700;color:var(--brand)}
.topic-foot .more::after{content:"→";margin-left:6px;transition:margin .2s ease}
.topic-card:hover .topic-foot .more::after{margin-left:10px}
.pager{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:48px}
.pager a,.pager span{
  min-width:44px;height:44px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);font-weight:600;font-size:14.5px;
}
.pager .current{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 10px 22px rgba(106,61,245,.24)}
.pager a:hover{color:var(--brand);border-color:#CFC6F9}

/* ---------- 左右分栏说明 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.split-figure img{width:100%;height:420px;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.num-list{display:grid;gap:18px;margin-top:26px}
.num-list li{display:flex;gap:14px;align-items:flex-start}
.num-list .idx{
  flex:0 0 34px;height:34px;border-radius:11px;background:var(--grad-soft);color:var(--brand);
  font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.num-list h3{font-size:16px;margin-bottom:4px}
.num-list p{font-size:14.5px;color:var(--muted)}

/* ---------- 深色流程带 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{
  position:relative;border-radius:var(--r-md);padding:26px 24px;
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.10);
  transition:transform .25s ease,background .25s ease;
}
.step:hover{transform:translateY(-4px);background:rgba(255,255,255,.08)}
.step-num{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--accent);font-variant-numeric:tabular-nums}
.step h3{font-size:17px;color:#fff;margin:12px 0 8px}
.step p{font-size:14.5px;color:var(--on-dark-muted)}

/* ---------- 等级可见范围 ---------- */
.level-rows{border-top:1px solid var(--line)}
.level-row{
  display:grid;grid-template-columns:190px 1fr 130px;gap:22px;align-items:center;
  padding:24px 18px;border-bottom:1px solid var(--line);transition:background .2s ease;
}
.level-row:hover{background:#F3F1FE}
.lv-name{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px}
.lv-dot{width:10px;height:10px;border-radius:50%;background:var(--grad);flex:0 0 10px}
.lv-dot.amber{background:var(--accent)}
.lv-dot-soft{background:var(--line)}
.lv-scope{font-size:14.5px;color:var(--muted)}
.lv-link a{font-size:14px;font-weight:700;color:var(--brand)}
.lv-link a::after{content:"→";margin-left:6px;transition:margin .2s ease}
.lv-link a:hover::after{margin-left:10px}

/* ---------- FAQ ---------- */
.faq{max-width:860px}
.faq .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;margin-bottom:12px;
}
.faq .accordion-button{
  position:relative;width:100%;background:transparent;border:0;box-shadow:none;
  font-size:17px;font-weight:700;color:var(--text);text-align:left;
  padding:20px 62px 20px 24px;border-radius:var(--r-md);
}
.faq .accordion-button:not(.collapsed){background:#F3F1FE;color:var(--brand);border-radius:var(--r-md) var(--r-md) 0 0}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq .accordion-button::after{display:none}
.faq .accordion-button::before{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;border-radius:50%;background:var(--grad-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;line-height:1;
}
.faq .accordion-button:not(.collapsed)::before{content:"−";background:var(--grad);color:#fff}
.faq .accordion-body{padding:6px 24px 22px;font-size:15px;color:var(--muted);background:#F3F1FE;line-height:1.85}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:28px;background:var(--grad);color:#fff;
  padding:48px;display:grid;grid-template-columns:1.4fr 1fr;gap:34px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:24px 24px;opacity:.28;
}
.cta-band h2{position:relative;color:#fff;font-size:clamp(22px,2.4vw,32px);margin-bottom:12px}
.cta-band p{position:relative;margin:0;font-size:15.5px;color:rgba(255,255,255,.9);max-width:520px}
.cta-tags{position:relative;display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.cta-tags span{
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
}
.cta-actions{position:relative;display:flex;flex-direction:column;gap:12px}
.cta-actions .btn-brand{background:#fff;color:#3F22B5;box-shadow:0 12px 26px rgba(18,14,38,.22)}
.cta-actions .btn-brand:hover{color:#2F1A9E}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.55)}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--ink-900);color:var(--on-dark-muted);padding:72px 0 28px;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:28px 28px;opacity:.35;
}
.footer-grid{position:relative;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px;margin-bottom:16px}
.footer-about{font-size:14.5px;line-height:1.85;max-width:330px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--on-dark-muted);font-size:14.5px}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;margin-bottom:8px}
.footer-line{
  position:relative;height:1px;margin:46px 0 20px;
  background:linear-gradient(90deg,rgba(106,61,245,0),rgba(106,61,245,.65),rgba(22,200,184,.65),rgba(22,200,184,0));
}
.footer-bottom{position:relative;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(169,163,207,.82)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .grid-cards{grid-template-columns:repeat(2,1fr)}
  .hero-grid{gap:36px}
  .hero-visual img{height:340px}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .section-dark{padding:64px 0}
  .page-hero{padding:42px 0 68px}
  .hero-grid{grid-template-columns:1fr}
  .hero-sub{max-width:none}
  .stat-row{max-width:none}
  .hero-visual img{height:320px}
  .float-card{left:16px;bottom:16px}
  .split{grid-template-columns:1fr;gap:34px}
  .split-figure img{height:320px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:38px}
  .cta-actions{flex-direction:row;flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .level-row{grid-template-columns:1fr;gap:8px;padding:20px 16px}
}
@media (max-width:767.98px){
  .grid-cards{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .hero-cta .btn-brand,.hero-cta .btn-ghost{width:100%}
  .stat-row{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:575.98px){
  .wrap{padding:0 18px}
  .section{padding:56px 0}
  .section-dark{padding:56px 0}
  .hero-title{font-size:28px}
  .hero-sub{font-size:15px}
  .page-hero{padding:34px 0 56px}
  .hero-visual img{height:250px}
  .float-card{position:static;margin-top:16px;left:auto;bottom:auto}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:28px;border-radius:22px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .topic-body{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}