/* roulang page: index */
:root{
  --primary:#7C4DFF;
  --primary-soft:#9B7BFF;
  --accent:#21E6C1;
  --hot:#FF6B4A;
  --data:#FFE24D;
  --bg:#100A24;
  --panel:#1A1136;
  --card:#201645;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#EDE9FF;
  --muted:#A79FD0;
  --read-bg:#FBF9FF;
  --read-text:#221A3B;
  --read-muted:#5B5478;
  --grad:linear-gradient(135deg,#7C4DFF 0%,#21E6C1 100%);
  --grad-hot:linear-gradient(135deg,#FF6B4A 0%,#FF9A4A 100%);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 12px 32px rgba(12,6,32,.55);
  --sp:8px;
  --ease:180ms ease;
}
*,*::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","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--accent);}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(124,77,255,.4);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
}
.section-head .head-text{max-width:720px;}
.section-head h2{
  font-size:clamp(22px,3vw,30px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-head .sub{
  margin-top:10px;
  font-size:14px;
  color:var(--muted);
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--accent);
  white-space:nowrap;
}
.text-link svg{transition:transform var(--ease);}
.text-link:hover svg{transform:translateX(4px);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease),filter var(--ease);
  border:1px solid transparent;
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad-hot);
  color:#fff;
  box-shadow:0 10px 26px rgba(255,107,74,.28);
}
.btn-primary:hover{filter:brightness(1.08);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(33,230,193,.08);}
.btn-ghost:active{transform:translateY(1px);}
.btn-grad{
  background:var(--grad);
  color:#fff;
  box-shadow:0 10px 26px rgba(124,77,255,.32);
}
.btn-grad:hover{filter:brightness(1.08);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-lg{height:56px;padding:0 32px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 11px;
  border-radius:8px;
  font-size:12px;
  font-weight:600;
  line-height:1.4;
  border:1px solid transparent;
}
.badge-data{background:rgba(255,226,77,.12);color:var(--data);border-color:rgba(255,226,77,.28);font-variant-numeric:tabular-nums;}
.badge-status{background:rgba(33,230,193,.1);color:var(--accent);border-color:rgba(33,230,193,.32);}
.badge-hot{background:rgba(255,107,74,.16);color:#FFB6A2;border-color:rgba(255,107,74,.34);}
.badge-plain{background:rgba(255,255,255,.06);color:var(--muted);border-color:var(--line);}
.tabular{font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:64px;
  background:rgba(16,10,36,.85);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
  height:100%;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;height:36px;
  border-radius:11px;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(124,77,255,.4);
  flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text .b1{font-size:15px;font-weight:700;letter-spacing:-.01em;}
.brand-text .b2{font-size:11px;color:var(--muted);letter-spacing:.06em;}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-menu a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:64px;
  padding:0 14px;
  font-size:14.5px;
  color:var(--muted);
  transition:color var(--ease);
}
.nav-menu a:hover{color:var(--text);}
.nav-menu a[aria-current="page"]{color:#fff;font-weight:600;}
.nav-menu a[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:16px;
  height:2px;
  border-radius:2px;
  background:var(--grad);
}
.nav-right{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:14px;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:220px;
  height:40px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(124,77,255,.22);
}
.nav-search svg{width:16px;height:16px;flex-shrink:0;color:var(--muted);}
.nav-search input{
  width:100%;
  background:none;
  border:0;
  outline:none;
  font-size:13.5px;
  color:var(--text);
}
.nav-search input::placeholder{color:#7C74A8;}
.nav-login{font-size:14px;color:var(--muted);}
.nav-login:hover{color:var(--accent);}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:12px;
  border:1px solid var(--line);
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;}
.mobile-drawer{
  position:fixed;
  inset:56px 0 auto 0;
  z-index:70;
  background:rgba(16,10,36,.98);
  border-bottom:1px solid var(--line);
  padding:16px 20px 24px;
  transform:translateY(-12px);
  opacity:0;
  pointer-events:none;
  transition:opacity 200ms ease,transform 200ms ease;
}
.mobile-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-drawer a{
  display:block;
  padding:13px 4px;
  font-size:16px;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a[aria-current="page"]{color:var(--accent);}
.mobile-drawer .drawer-cta{margin-top:18px;}
.mobile-drawer .drawer-cta .btn{width:100%;}
.drawer-mask{
  position:fixed;inset:0;z-index:60;background:rgba(6,3,16,.6);
  opacity:0;pointer-events:none;transition:opacity 200ms ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:calc(64px + 72px) 0 88px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  width:620px;height:620px;
  top:-260px;left:-160px;
  background:radial-gradient(circle,rgba(124,77,255,.38) 0%,rgba(124,77,255,0) 68%);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  width:520px;height:520px;
  bottom:-260px;right:-120px;
  background:radial-gradient(circle,rgba(33,230,193,.22) 0%,rgba(33,230,193,0) 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(124,77,255,.16);
  border:1px solid rgba(124,77,255,.4);
  font-size:13px;
  color:#C9BCFF;
  margin-bottom:22px;
}
.hero-eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(33,230,193,.18);
}
.hero h1{
  font-size:clamp(28px,4.6vw,46px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero h1 .hl{
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:16px;
  color:var(--muted);
  max-width:560px;
  margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
  margin-top:40px;
  max-width:600px;
}
.stat{
  padding:14px 14px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
}
.stat .num{
  font-size:22px;
  font-weight:700;
  color:var(--data);
  font-variant-numeric:tabular-nums;
  line-height:1.3;
}
.stat .lbl{font-size:12.5px;color:var(--muted);}
.hero-visual{position:relative;}
.hero-visual .glow{
  position:absolute;
  inset:-18px;
  border-radius:32px;
  background:var(--grad);
  filter:blur(38px);
  opacity:.28;
}
.hero-card{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  background:var(--panel);
}
.hero-card img{
  width:100%;
  height:360px;
  object-fit:cover;
}
.hero-card .veil{
  position:absolute;
  inset:auto 0 0 0;
  height:56%;
  background:linear-gradient(to top,rgba(16,10,36,.94),rgba(16,10,36,0));
}
.hero-card .card-badges{
  position:absolute;
  left:20px;bottom:20px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.hero-card .card-top{
  position:absolute;
  left:20px;top:20px;
  display:flex;
  gap:8px;
}

/* ---------- 合集目录 ---------- */
.collection-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:22px;
}
.col-card{
  grid-column:span 4;
  display:flex;
  flex-direction:column;
  border-radius:var(--r-xl);
  background:var(--card);
  border:1px solid var(--line);
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.col-card.wide{grid-column:span 6;}
.col-card:hover{
  transform:translateY(-4px);
  border-color:rgba(124,77,255,.55);
  box-shadow:var(--shadow);
}
.col-card .cover{
  position:relative;
  aspect-ratio:4/3;
  overflow:hidden;
}
.col-card .cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 400ms ease;
}
.col-card:hover .cover img{transform:scale(1.03);}
.col-card .cover .tag-on{
  position:absolute;
  left:14px;top:14px;
}
.col-card .cover .fade{
  position:absolute;
  inset:auto 0 0 0;
  height:50%;
  background:linear-gradient(to top,rgba(16,10,36,.9),rgba(16,10,36,0));
}
.col-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;}
.col-card .body h3{font-size:17px;font-weight:600;line-height:1.5;}
.col-card .body p{font-size:13.5px;color:var(--muted);line-height:1.7;}
.col-card .meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:4px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.col-card .meta .time{font-size:12.5px;color:#8B84B8;font-variant-numeric:tabular-nums;}
.col-card .meta .arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--accent);
}
.col-card .meta .arrow svg{transition:transform var(--ease);}
.col-card:hover .meta .arrow svg{transform:translateX(4px);}

/* ---------- 精选条目 ---------- */
.feature-layout{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:22px;
}
.feature-main{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-xl);
  background:var(--card);
  border:1px solid var(--line);
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease);
}
.feature-main:hover{transform:translateY(-4px);border-color:rgba(33,230,193,.45);}
.feature-main .cover{position:relative;aspect-ratio:16/9;overflow:hidden;}
.feature-main .cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.feature-main:hover .cover img{transform:scale(1.03);}
.feature-main .cover .veil{
  position:absolute;inset:auto 0 0 0;height:62%;
  background:linear-gradient(to top,rgba(16,10,36,.92),rgba(16,10,36,0));
}
.feature-main .cover .tags{
  position:absolute;left:20px;top:20px;display:flex;gap:8px;flex-wrap:wrap;
}
.feature-main .cover .title-on{
  position:absolute;left:22px;right:22px;bottom:20px;
}
.feature-main .cover .title-on h3{font-size:20px;font-weight:600;line-height:1.5;}
.feature-main .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:14px;}
.feature-main .body p{font-size:14.5px;color:var(--muted);}
.feature-main .badges{display:flex;flex-wrap:wrap;gap:8px;}

.side-stack{display:grid;grid-template-rows:1fr 1fr;gap:22px;}
.mini-card{
  display:grid;
  grid-template-columns:110px 1fr;
  gap:16px;
  padding:16px;
  border-radius:var(--r-lg);
  background:var(--card);
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease);
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(124,77,255,.5);}
.mini-card .thumb{
  width:110px;height:110px;
  border-radius:var(--r-md);
  overflow:hidden;
  flex-shrink:0;
}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover;}
.mini-card .txt{display:flex;flex-direction:column;gap:8px;min-width:0;}
.mini-card .txt h3{
  font-size:16px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-card .txt p{
  font-size:13px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-card .txt .row{margin-top:auto;display:flex;align-items:center;gap:8px;flex-wrap:wrap;}

.compact-list{margin-top:22px;display:grid;grid-template-columns:1fr;gap:12px;}
.compact-item{
  display:grid;
  grid-template-columns:72px 1fr auto;
  align-items:center;
  gap:16px;
  padding:14px 18px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease),background-color var(--ease);
}
.compact-item:hover{
  transform:translateY(-4px);
  border-color:rgba(33,230,193,.42);
  background:rgba(33,230,193,.05);
}
.compact-item .thumb{
  width:72px;height:72px;border-radius:var(--r-sm);overflow:hidden;
}
.compact-item .thumb img{width:100%;height:100%;object-fit:cover;}
.compact-item .txt{min-width:0;}
.compact-item .txt h3{
  font-size:16px;font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.compact-item .txt .sub{
  margin-top:6px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:12.5px;color:var(--muted);
}
.compact-item .go{color:var(--accent);display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;}
.compact-item .go svg{transition:transform var(--ease);}
.compact-item:hover .go svg{transform:translateX(4px);}

/* ---------- 最新信息（CMS） ---------- */
.post-grid{
  display:grid;
  grid-template-columns:8fr 4fr;
  gap:26px;
  align-items:start;
}
.post-list{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.post-card{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:20px;
  border-radius:var(--r-lg);
  background:var(--card);
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.post-card:hover{
  transform:translateY(-4px);
  border-color:rgba(124,77,255,.55);
  box-shadow:var(--shadow);
}
.post-card .top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.post-card h3{
  font-size:16px;font-weight:600;line-height:1.55;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.post-card p{
  font-size:13.5px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:47px;
}
.post-card .foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  font-size:12.5px;color:#8B84B8;
}
.post-card .foot .arrow{color:var(--accent);display:inline-flex;transition:transform var(--ease);}
.post-card:hover .foot .arrow{transform:translateX(4px);}

.reco-panel{
  border-radius:var(--r-xl);
  background:linear-gradient(160deg,rgba(124,77,255,.18),rgba(33,230,193,.08));
  border:1px solid var(--line-strong);
  padding:24px;
}
.reco-panel h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.reco-panel .hint{font-size:13px;color:var(--muted);margin-bottom:18px;}
.reco-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;
  border-bottom:1px dashed var(--line);
}
.reco-item:last-child{border-bottom:0;padding-bottom:0;}
.reco-item .idx{
  width:24px;height:24px;border-radius:8px;
  background:rgba(255,226,77,.14);
  color:var(--data);
  font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;font-variant-numeric:tabular-nums;
}
.reco-item .rt{font-size:14px;line-height:1.6;}
.reco-item .rt span{display:block;font-size:12px;color:var(--muted);margin-top:3px;}

.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  padding:48px 20px;
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.03);
  border:1px dashed var(--line-strong);
  text-align:center;
  grid-column:1 / -1;
}
.empty-state svg{width:36px;height:36px;color:var(--muted);}
.empty-state p{font-size:14.5px;color:var(--muted);}

/* ---------- 横滑推荐 ---------- */
.scroll-band{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:6px 4px 16px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
}
.scroll-band::-webkit-scrollbar{display:none;}
.scroll-card{
  flex:0 0 288px;
  scroll-snap-align:start;
  border-radius:var(--r-xl);
  background:var(--card);
  border:1px solid var(--line);
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease);
}
.scroll-card:hover{transform:translateY(-4px);border-color:rgba(33,230,193,.45);}
.scroll-card .cover{position:relative;aspect-ratio:16/9;overflow:hidden;}
.scroll-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.scroll-card:hover .cover img{transform:scale(1.03);}
.scroll-card .cover .veil{
  position:absolute;inset:auto 0 0 0;height:60%;
  background:linear-gradient(to top,rgba(16,10,36,.88),rgba(16,10,36,0));
}
.scroll-card .cover .cap{
  position:absolute;left:16px;bottom:14px;right:16px;
  font-size:15px;font-weight:600;line-height:1.5;
}
.scroll-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;}
.scroll-card .body p{font-size:13.5px;color:var(--muted);line-height:1.7;}
.scroll-card .body .row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}

/* ---------- FAQ ---------- */
.faq-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}
.faq-item{
  border-radius:var(--r-lg);
  background:var(--card);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color var(--ease);
}
.faq-item[open]{border-color:rgba(124,77,255,.55);}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  font-size:16px;
  font-weight:600;
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item .icon{
  width:24px;height:24px;flex-shrink:0;
  position:relative;
  border-radius:8px;
  background:rgba(124,77,255,.16);
  border:1px solid rgba(124,77,255,.36);
  transition:transform 240ms ease;
}
.faq-item .icon::before,
.faq-item .icon::after{
  content:"";
  position:absolute;
  background:var(--accent);
  border-radius:2px;
}
.faq-item .icon::before{left:6px;right:6px;top:10.5px;height:1.75px;}
.faq-item .icon::after{top:6px;bottom:6px;left:10.5px;width:1.75px;}
.faq-item[open] .icon{transform:rotate(45deg);}
.faq-item .answer{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--muted);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:28px;
  overflow:hidden;
  padding:52px 48px;
  background:linear-gradient(120deg,rgba(124,77,255,.9),rgba(33,230,193,.78));
  margin-bottom:88px;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.5;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.3;color:#fff;}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.88);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.6);color:#fff;background:rgba(255,255,255,.12);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;border-color:#fff;}
.cta-band .btn-primary{background:#160E30;box-shadow:0 12px 28px rgba(10,4,28,.35);}
.cta-band .btn-primary:hover{filter:brightness(1.2);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0B0619;
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:48px;
}
.foot-brand .brand{margin-bottom:16px;}
.foot-brand p{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:320px;}
.foot-col h4{font-size:15px;font-weight:600;margin-bottom:16px;}
.foot-col li{margin-bottom:10px;}
.foot-col a,.foot-col span{font-size:13.5px;color:var(--muted);transition:color var(--ease);}
.foot-col a:hover{color:var(--accent);}
.foot-acc-btn{display:none;}
.foot-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8B84B8;
}
.foot-bottom .domain{color:#8B84B8;}

.mobile-bar{display:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-search{width:180px;}
  .hero-grid{gap:40px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-inner{padding:0 24px;}
  .nav-menu{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:64px 0;}
  .hero{padding:calc(64px + 56px) 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:-1;}
  .hero-card img{height:300px;}
  .collection-grid{grid-template-columns:repeat(6,1fr);}
  .col-card,.col-card.wide{grid-column:span 3;}
  .feature-layout{grid-template-columns:1fr;}
  .side-stack{grid-template-rows:auto auto;}
  .post-grid{grid-template-columns:1fr;}
  .faq-list{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{padding:44px 32px;margin-bottom:64px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;}
  .site-header{height:56px;}
  .brand-mark{width:32px;height:32px;border-radius:10px;}
  .brand-text .b1{font-size:14px;}
  .brand-text .b2{font-size:10px;}
  .nav-login{display:none;}
  .nav-cta{height:36px;padding:0 14px;font-size:13px;}
  .hero{padding:calc(56px + 40px) 0 48px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-card img{height:230px;}
  .collection-grid{grid-template-columns:1fr;}
  .col-card,.col-card.wide{grid-column:span 1;}
  .post-list{grid-template-columns:1fr;}
  .compact-item{grid-template-columns:60px 1fr;row-gap:8px;padding:12px 14px;}
  .compact-item .thumb{width:60px;height:60px;}
  .compact-item .go{grid-column:2;justify-self:end;}
  .mini-card{grid-template-columns:92px 1fr;padding:14px;}
  .mini-card .thumb{width:92px;height:92px;}
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .cta-band{padding:32px 22px;margin-bottom:48px;border-radius:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .foot-grid{grid-template-columns:1fr;gap:0;padding-bottom:24px;}
  .foot-col{border-bottom:1px solid var(--line);}
  .foot-col h4{margin:0;padding:16px 0;}
  .foot-acc-btn{
    display:flex;align-items:center;justify-content:space-between;width:100%;
    padding:16px 0;font-size:15px;font-weight:600;
  }
  .foot-col ul{display:none;padding-bottom:16px;}
  .foot-col.is-open ul{display:block;}
  .foot-col h4{display:none;}
  .foot-brand{padding:8px 0 20px;border-bottom:1px solid var(--line);}
  .post-card p{min-height:auto;}
  .mobile-bar{
    display:flex;
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:75;
    height:58px;
    background:rgba(16,10,36,.96);
    backdrop-filter:blur(8px);
    border-top:1px solid var(--line);
  }
  .mobile-bar a{
    flex:1;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:11.5px;color:var(--muted);
  }
  .mobile-bar a svg{width:20px;height:20px;}
  .mobile-bar a[aria-current="page"]{color:var(--accent);}
  body{padding-bottom:58px;}
}
@media (max-width:480px){
  .hero h1{font-size:25px;}
  .hero-sub{font-size:14.5px;}
  .btn{height:44px;padding:0 20px;font-size:14px;}
  .btn-lg{height:48px;font-size:15px;}
  .post-card,.col-card .body{padding:16px;}
  .stat .num{font-size:19px;}
  .scroll-card{flex:0 0 240px;}
  .feature-main .body{padding:16px;}
  .faq-item summary{padding:16px;font-size:15px;}
  .faq-item .answer{padding:0 16px 18px;}
}

/* roulang page: article */
:root{
  --p:#7C4DFF;
  --p-soft:#9C7BFF;
  --c:#21E6C1;
  --o:#FF6B4A;
  --y:#FFE24D;
  --bg:#100A24;
  --panel:#1A1136;
  --card:#201645;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --tx:#EDE9FF;
  --tx2:#A79FD0;
  --paper:#FBF9FF;
  --ink:#221A3B;
  --ink2:#5B5478;
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh:0 12px 32px rgba(12,6,32,.55);
  --grad:linear-gradient(135deg,#7C4DFF 0%,#21E6C1 100%);
  --grad-hot:linear-gradient(135deg,#FF6B4A 0%,#7C4DFF 100%);
  --ease:180ms ease;
  --hdr:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--tx);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  padding-top:var(--hdr);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,button{font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
:focus-visible{outline:2px solid var(--c);outline-offset:2px;border-radius:6px}
::selection{background:rgba(124,77,255,.45);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.sec-head h2{font-size:clamp(22px,3vw,30px);line-height:1.3}
.sec-head .sec-sub{color:var(--tx2);font-size:14px;margin-top:6px}
.sec-link{color:var(--c);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:var(--ease)}
.sec-link:hover{color:#fff}
.sec-link svg{transition:transform var(--ease)}
.sec-link:hover svg{transform:translateX(4px)}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--hdr);
  background:rgba(16,10,36,.85);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1200px;margin:0 auto;height:100%;
  padding:0 32px;display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(124,77,255,.45);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text .b1{font-size:15px;font-weight:700;color:var(--tx)}
.brand-text .b2{font-size:11px;color:var(--tx2);letter-spacing:.08em}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-menu a{
  position:relative;padding:8px 12px;border-radius:10px;
  font-size:14px;color:var(--tx2);transition:var(--ease);
}
.nav-menu a:hover{color:var(--tx);background:rgba(255,255,255,.05)}
.nav-menu a[aria-current="page"]{color:#fff}
.nav-menu a[aria-current="page"]::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  border-radius:2px;background:var(--grad);
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:0 14px;height:38px;width:210px;
  transition:var(--ease);
}
.nav-search:focus-within{border-color:var(--p);box-shadow:0 0 0 3px rgba(124,77,255,.25)}
.nav-search svg{width:16px;height:16px;color:var(--tx2);flex-shrink:0}
.nav-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--tx);font-size:13px;
}
.nav-search input::placeholder{color:#7E76A8}
.nav-login{font-size:14px;color:var(--tx2);transition:var(--ease);padding:6px 4px}
.nav-login:hover{color:#fff}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--tx);
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:0;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:var(--ease);white-space:nowrap;
}
.btn-sm{height:38px;padding:0 18px;font-size:13.5px}
.btn-lg{height:56px;padding:0 30px;font-size:16px}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(124,77,255,.32)}
.btn-grad:hover{filter:brightness(1.08);box-shadow:0 10px 28px rgba(124,77,255,.45)}
.btn-grad:active{transform:translateY(1px)}
.btn-hot{background:var(--grad-hot);color:#fff;box-shadow:0 8px 22px rgba(255,107,74,.3)}
.btn-hot:hover{filter:brightness(1.08)}
.btn-hot:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--tx);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--c);color:#fff;background:rgba(33,230,193,.08)}
.btn-ghost:active{transform:translateY(1px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c);font-weight:600;font-size:14px}
.btn-text svg{transition:transform var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 10px;border-radius:8px;
  font-size:12px;font-weight:600;
}
.badge svg{width:14px;height:14px}
.badge-data{background:rgba(255,226,77,.12);color:var(--y);border:1px solid rgba(255,226,77,.28)}
.badge-state{background:rgba(33,230,193,.1);color:var(--c);border:1px solid rgba(33,230,193,.35)}
.badge-hot{background:var(--grad-hot);color:#fff}
.badge-plain{background:rgba(255,255,255,.06);color:var(--tx2);border:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  background:rgba(124,77,255,.16);color:#CDBBFF;border:1px solid rgba(124,77,255,.35);
}

/* ---------- breadcrumb ---------- */
.crumb{padding:24px 0 0;font-size:13px;color:var(--tx2);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb a{color:var(--tx2);transition:var(--ease)}
.crumb a:hover{color:var(--c)}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--tx)}

/* ---------- article head ---------- */
.article-head{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(560px 320px at 12% 0%,rgba(124,77,255,.32),transparent 70%),
    radial-gradient(520px 300px at 92% 20%,rgba(33,230,193,.18),transparent 70%),
    var(--panel);
}
.article-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.article-head .container{position:relative;z-index:1;padding-top:12px;padding-bottom:44px}
.article-head h1{
  font-size:clamp(28px,4.6vw,46px);line-height:1.25;font-weight:700;
  letter-spacing:-.01em;margin:18px 0 16px;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:13.5px;color:var(--tx2);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.meta-strong{color:var(--tx);font-weight:600}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.num{font-variant-numeric:tabular-nums}

/* ---------- layout ---------- */
.reader-wrap{
  display:grid;grid-template-columns:minmax(0,760px) 240px;
  gap:32px;justify-content:center;align-items:start;
  padding:48px 0 8px;
}
.paper{
  background:var(--paper);color:var(--ink);
  border-radius:var(--r-lg);
  padding:40px;
  box-shadow:var(--sh);
}
.article-body{font-size:16px;line-height:1.9;color:var(--ink)}
.article-body > * + *{margin-top:1.2em}
.article-body p{color:var(--ink)}
.article-body h2{
  position:relative;font-size:clamp(21px,2.4vw,26px);line-height:1.35;color:var(--ink);
  margin-top:40px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:4px;background:var(--grad);
}
.article-body h3{font-size:20px;font-weight:600;color:var(--ink);margin-top:28px}
.article-body ul,.article-body ol{padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.5em 0;color:var(--ink2)}
.article-body li strong{color:var(--ink)}
.article-body a{color:var(--p);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#5A2FD8}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:4px solid var(--c);
  background:rgba(124,77,255,.06);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink2);font-size:15.5px;
}
.article-body img{border-radius:var(--r-md);margin:24px auto;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption,.article-body .caption{
  font-size:13px;color:var(--ink2);text-align:center;margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;
  font-variant-numeric:tabular-nums;
}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid rgba(34,26,59,.08)}
.article-body thead th{background:rgba(124,77,255,.08);color:var(--ink);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(34,26,59,.02)}
.article-body code{
  background:rgba(34,26,59,.06);padding:2px 6px;border-radius:6px;font-size:14px;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.empty-state{
  text-align:center;padding:56px 20px;color:var(--ink2);
}
.empty-state svg{width:40px;height:40px;color:var(--p);margin:0 auto 16px}
.empty-state h3{color:var(--ink);font-size:20px;margin-bottom:10px}
.empty-state p{font-size:14.5px;margin-bottom:22px}
.empty-state .btn{background:var(--grad);color:#fff}

/* ---------- sidebar ---------- */
.aside{position:sticky;top:calc(var(--hdr) + 20px);display:flex;flex-direction:column;gap:18px}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px;transition:var(--ease);
}
.aside-card:hover{border-color:var(--line-strong)}
.aside-card h4{font-size:14px;color:var(--tx);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.aside-card h4 svg{width:16px;height:16px;color:var(--c)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow:auto}
.toc-list a{
  font-size:13.5px;color:var(--tx2);padding:6px 8px;border-radius:8px;
  border-left:2px solid transparent;transition:var(--ease);display:block;
}
.toc-list a:hover{color:#fff;background:rgba(255,255,255,.05);border-left-color:var(--p)}
.mini-list{display:flex;flex-direction:column;gap:12px}
.mini-list a{display:flex;gap:10px;align-items:flex-start;transition:var(--ease)}
.mini-list a:hover .mini-t{color:var(--c)}
.mini-list img{width:56px;height:42px;object-fit:cover;border-radius:8px;flex-shrink:0}
.mini-list .mini-t{font-size:13.5px;line-height:1.5;color:var(--tx);transition:var(--ease)}
.mini-list .mini-d{font-size:12px;color:var(--tx2);margin-top:4px}

/* ---------- share bar ---------- */
.share-bar{
  margin-top:36px;
  background:linear-gradient(135deg,rgba(124,77,255,.9),rgba(33,230,193,.75));
  border-radius:var(--r-xl);
  padding:26px 28px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  box-shadow:0 14px 36px rgba(124,77,255,.28);
}
.share-bar .sb-t{font-size:18px;font-weight:700;color:#fff}
.share-bar .sb-s{font-size:13.5px;color:rgba(255,255,255,.86);margin-top:6px}
.share-actions{display:flex;gap:12px;flex-wrap:wrap}
.share-actions .btn-ghost{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.4);color:#fff}
.share-actions .btn-ghost:hover{background:rgba(255,255,255,.26);border-color:#fff}

/* ---------- related ---------- */
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 18px;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  flex:0 0 280px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:var(--ease);display:block;
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(124,77,255,.55);box-shadow:var(--sh)}
.rail-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.rail-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.rail-card:hover .thumb img{transform:scale(1.03)}
.rail-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(16,10,36,.85),rgba(16,10,36,0) 60%);
}
.rail-card .thumb .badge{position:absolute;top:12px;left:12px;z-index:1}
.rail-card .rc-body{padding:16px 18px 18px}
.rail-card .rc-body h3{font-size:17px;font-weight:600;line-height:1.45}
.rail-card .rc-body p{font-size:13.5px;color:var(--tx2);margin-top:8px;line-height:1.6}
.rail-card .rc-foot{
  margin-top:14px;font-size:12.5px;color:var(--tx2);
  display:flex;align-items:center;justify-content:space-between;
}
.rail-card .rc-foot svg{width:16px;height:16px;color:var(--c);transition:transform var(--ease)}
.rail-card:hover .rc-foot svg{transform:translateX(4px)}

/* ---------- prev / next ---------- */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:8px}
.pager a{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;transition:var(--ease);display:block;
}
.pager a:hover{border-color:var(--c);transform:translateY(-3px)}
.pager .pg-label{font-size:12.5px;color:var(--c);font-weight:600;display:flex;align-items:center;gap:6px}
.pager .pg-title{font-size:16px;font-weight:600;margin-top:8px;line-height:1.5}
.pager .pg-desc{font-size:13px;color:var(--tx2);margin-top:6px}
.pager .right{text-align:right}
.pager .right .pg-label{justify-content:flex-end}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:860px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:var(--ease);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-q{
  width:100%;background:transparent;border:0;color:var(--tx);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;text-align:left;
}
.faq-q .ico{
  width:24px;height:24px;flex-shrink:0;border-radius:50%;
  background:rgba(124,77,255,.16);color:var(--c);
  display:flex;align-items:center;justify-content:center;transition:transform 240ms ease;
}
.faq-q .ico svg{width:14px;height:14px}
.faq-item.open .faq-q .ico{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--tx2)}

/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;border-top:1px solid var(--line);
  background:var(--panel);padding:56px 0 28px;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.foot-brand p{font-size:13.5px;color:var(--tx2);margin-top:16px;line-height:1.8;max-width:340px}
.foot-col h4{font-size:14px;color:var(--tx);margin-bottom:14px}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col ul a{font-size:13.5px;color:var(--tx2);transition:var(--ease)}
.foot-col ul a:hover{color:var(--c)}
.foot-acc-btn{display:none}
.foot-note{font-size:12.5px;color:#7E76A8;margin-top:14px;line-height:1.7}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#7E76A8;
}
.foot-bottom a{color:#7E76A8}
.foot-bottom a:hover{color:var(--c)}

/* ---------- mobile bottom bar ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:55;
  background:rgba(16,10,36,.94);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);padding:8px 12px;
}
.mobile-bar .mb-inner{display:flex;gap:10px}
.mobile-bar a,.mobile-bar button{
  flex:1;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);color:var(--tx);font-size:13px;
  display:flex;align-items:center;justify-content:center;gap:6px;
}
.mobile-bar a.primary{background:var(--grad);border-color:transparent;color:#fff;font-weight:600}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .reader-wrap{grid-template-columns:minmax(0,1fr) 220px;gap:24px}
}
@media (max-width:1023px){
  .nav-search{width:160px}
  .nav-menu a{padding:8px 9px;font-size:13.5px}
  .reader-wrap{grid-template-columns:minmax(0,1fr)}
  .aside{position:static;flex-direction:row;flex-wrap:wrap}
  .aside-card{flex:1 1 260px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{padding-bottom:64px}
  .container{padding:0 16px}
  .nav-inner{padding:0 16px;gap:12px}
  .nav-search,.nav-login{display:none}
  .nav-toggle{display:flex}
  .nav-menu{
    position:fixed;top:var(--hdr);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--panel);border-bottom:1px solid var(--line);
    padding:12px 16px 18px;margin:0;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity 200ms ease,transform 200ms ease;
    box-shadow:0 18px 40px rgba(8,4,20,.6);
  }
  .nav-menu.open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-menu a{padding:12px 10px;font-size:15px;border-radius:10px}
  .nav-menu a[aria-current="page"]{background:rgba(124,77,255,.14)}
  .nav-menu a[aria-current="page"]::after{display:none}
  .nav-cta{display:none}
  .section{padding:48px 0}
  .article-head .container{padding-bottom:32px}
  .article-head h1{margin:14px 0 14px}
  .paper{padding:24px 18px;border-radius:var(--r-md)}
  .article-body{font-size:15.5px;line-height:1.9}
  .article-body h2{margin-top:32px}
  .reader-wrap{padding:28px 0 0}
  .share-bar{padding:22px 20px;border-radius:var(--r-md)}
  .share-actions{width:100%}
  .share-actions .btn{flex:1}
  .pager{grid-template-columns:1fr}
  .pager .right{text-align:left}
  .pager .right .pg-label{justify-content:flex-start}
  .mobile-bar{display:block}
  .foot-grid{grid-template-columns:1fr;gap:0}
  .foot-brand{padding-bottom:24px;border-bottom:1px solid var(--line)}
  .foot-col{border-bottom:1px solid var(--line);padding:6px 0}
  .foot-col h4{display:none}
  .foot-acc-btn{
    display:flex;width:100%;align-items:center;justify-content:space-between;
    background:transparent;border:0;color:var(--tx);font-size:14px;font-weight:600;
    padding:14px 0;
  }
  .foot-acc-btn svg{transition:transform var(--ease);color:var(--tx2)}
  .foot-col.open .foot-acc-btn svg{transform:rotate(180deg)}
  .foot-col ul{display:none;padding-bottom:14px}
  .foot-col.open ul{display:flex}
  .site-footer{padding:32px 0 24px;margin-top:56px}
}
@media (max-width:520px){
  .brand-text .b1{font-size:14px}
  .brand-text .b2{font-size:10px}
  .article-head h1{font-size:26px}
  .btn{height:44px;padding:0 18px;font-size:14px}
  .btn-lg{height:50px;width:100%}
  .email-actions{flex-direction:column}
  .rail-card{flex:0 0 240px}
}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
:root{
  --purple:#7C4DFF;
  --purple-deep:#4B2ACB;
  --cyan:#21E6C1;
  --orange:#FF6B4A;
  --yellow:#FFE24D;
  --bg:#100A24;
  --panel:#1A1136;
  --card:#201645;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --text:#EDE9FF;
  --muted:#A79FD0;
  --read-bg:#FBF9FF;
  --read-text:#221A3B;
  --read-muted:#5B5478;
  --grad:linear-gradient(135deg,#7C4DFF 0%,#21E6C1 100%);
  --grad-warm:linear-gradient(135deg,#FF6B4A 0%,#7C4DFF 100%);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow:0 12px 32px rgba(12,6,32,.55);
  --shadow-soft:0 8px 24px rgba(12,6,32,.35);
  --container:1200px;
  --gap:24px;
  --sec:88px;
  --dur:180ms;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}

/* ========== Reset / Base ========== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(900px 520px at 12% -8%,rgba(124,77,255,.28),transparent 65%),
    radial-gradient(760px 460px at 92% 4%,rgba(33,230,193,.16),transparent 62%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
svg{display:block;}
:focus-visible{outline:2px solid var(--purple);outline-offset:2px;border-radius:6px;}

/* ========== 容器 ========== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:var(--sec) 0;}
.section-tight{padding:56px 0;}
.narrow{max-width:760px;}

/* ========== 通用排版 ========== */
.h1{font-size:clamp(28px,4.6vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.h2{font-size:clamp(22px,3vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.005em;}
.h3{font-size:20px;line-height:1.4;font-weight:600;}
.lead{font-size:17px;line-height:1.85;color:var(--muted);}
.muted{color:var(--muted);}
.small{font-size:13px;line-height:1.6;color:var(--muted);}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap;}
.sec-head p{color:var(--muted);font-size:14px;margin-top:8px;}
.sec-head .h2 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:14px;font-weight:600;transition:gap var(--dur) ease,color var(--dur) ease;}
.text-link:hover{gap:10px;color:#fff;}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform var(--dur) ease,filter var(--dur) ease,background var(--dur) ease,border-color var(--dur) ease,color var(--dur) ease;
}
.btn svg{width:18px;height:18px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-lg{height:56px;padding:0 30px;font-size:16px;}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(124,77,255,.34);}
.btn-grad:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-warm{background:var(--grad-warm);color:#fff;box-shadow:0 10px 26px rgba(255,107,74,.3);}
.btn-warm:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-strong);color:var(--text);}
.btn-ghost:hover{border-color:var(--cyan);color:#fff;background:rgba(33,230,193,.08);}
.btn:active{transform:translateY(1px) scale(.995);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ========== 徽章 / 标签 ========== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;border-radius:8px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge svg{width:14px;height:14px;}
.badge-num{background:rgba(255,226,77,.12);color:var(--yellow);border:1px solid rgba(255,226,77,.28);}
.badge-state{background:rgba(33,230,193,.1);color:var(--cyan);border:1px solid rgba(33,230,193,.32);}
.badge-hot{background:rgba(255,107,74,.16);color:#FFB6A3;border:1px solid rgba(255,107,74,.38);}
.badge-ver{background:rgba(124,77,255,.18);color:#CFC0FF;border:1px solid rgba(124,77,255,.42);}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--muted);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}

/* ========== 导航 ========== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(16,10,36,.85);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 32px;
  height:64px;display:flex;align-items:center;gap:20px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;background:var(--grad);
  display:grid;place-items:center;box-shadow:0 6px 18px rgba(124,77,255,.38);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.05;}
.brand-text .b1{font-size:16px;font-weight:700;letter-spacing:.02em;}
.brand-text .b2{font-size:11px;color:var(--muted);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-menu a{
  position:relative;padding:9px 14px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--muted);
  transition:color var(--dur) ease,background var(--dur) ease;
}
.nav-menu a:hover{color:var(--text);background:rgba(255,255,255,.06);}
.nav-menu a[aria-current="page"]{color:#fff;}
.nav-menu a[aria-current="page"]::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  transition:border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.nav-search:focus-within{border-color:var(--purple);box-shadow:0 0 0 3px rgba(124,77,255,.22);}
.nav-search svg{width:16px;height:16px;color:var(--muted);flex-shrink:0;}
.nav-search input{
  width:170px;background:none;border:none;outline:none;
  font-size:13px;color:var(--text);
}
.nav-search input::placeholder{color:#7A719F;}
.nav-login{font-size:14px;font-weight:500;color:var(--muted);transition:color var(--dur) ease;}
.nav-login:hover{color:#fff;}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;}

/* ========== 面包屑 ========== */
.breadcrumb{padding-top:28px;font-size:13px;color:var(--muted);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"›";color:#6F679B;}
.breadcrumb a{transition:color var(--dur) ease;}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb [aria-current="page"]{color:var(--text);}

/* ========== 首屏 ========== */
.hero{position:relative;padding:56px 0 64px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.35;
  mask-image:radial-gradient(700px 380px at 30% 10%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(700px 380px at 30% 10%,#000 20%,transparent 78%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;
  gap:56px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(124,77,255,.16);border:1px solid rgba(124,77,255,.36);
  font-size:13px;font-weight:600;color:#CFC0FF;margin-bottom:20px;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan);}
.hero h1{margin-bottom:16px;}
.hero h1 em{
  font-style:normal;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lead{max-width:520px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-badges .badge{padding:8px 14px;}
.hero-visual{
  position:relative;border-radius:var(--r-xl);padding:1px;
  background:linear-gradient(140deg,rgba(124,77,255,.9),rgba(33,230,193,.65) 55%,rgba(255,255,255,.08));
  box-shadow:0 24px 60px rgba(124,77,255,.22);
}
.hero-visual-inner{
  position:relative;border-radius:calc(var(--r-xl) - 1px);overflow:hidden;
  background:var(--panel);
}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-visual-inner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,10,36,0) 40%,rgba(16,10,36,.88) 100%);
}
.hero-visual-tag{position:absolute;left:18px;bottom:18px;z-index:2;display:flex;flex-wrap:wrap;gap:8px;}
.hero-panel{
  position:absolute;right:-14px;top:26px;z-index:3;
  background:rgba(26,17,54,.92);border:1px solid var(--line-strong);
  border-radius:var(--r-md);padding:14px 16px;box-shadow:var(--shadow);
  min-width:150px;
}
.hero-panel .k{font-size:12px;color:var(--muted);}
.hero-panel .v{font-size:24px;font-weight:700;color:var(--yellow);line-height:1.3;}

/* ========== 频道标签条 ========== */
.channel-bar{
  position:sticky;top:64px;z-index:40;
  background:rgba(16,10,36,.9);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.channel-inner{
  max-width:var(--container);margin:0 auto;padding:0 32px;
  display:flex;align-items:center;gap:10px;height:56px;overflow-x:auto;
  scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;padding:8px 16px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:var(--muted);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:color var(--dur) ease,border-color var(--dur) ease,background var(--dur) ease;
}
.chip:hover{color:#fff;border-color:var(--line-strong);}
.chip.is-active{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 6px 18px rgba(124,77,255,.3);}

/* ========== 分类页布局：左目录 + 右列表 ========== */
.cat-layout{display:grid;grid-template-columns:200px 1fr;gap:40px;align-items:start;}
.side-dir{position:sticky;top:144px;}
.side-dir h3{font-size:13px;letter-spacing:.08em;color:var(--muted);font-weight:600;margin-bottom:14px;}
.side-dir ul{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.side-dir a{
  display:block;padding:9px 0 9px 16px;font-size:14px;color:var(--muted);
  border-left:2px solid transparent;margin-left:-1px;
  transition:color var(--dur) ease,border-color var(--dur) ease,padding-left var(--dur) ease;
}
.side-dir a:hover{color:#fff;border-left-color:var(--cyan);padding-left:18px;}
.side-dir a.is-active{color:#fff;border-left-color:var(--purple);}
.side-card{
  margin-top:26px;padding:18px;border-radius:var(--r-md);
  background:var(--panel);border:1px solid var(--line);
}
.side-card p{font-size:13px;color:var(--muted);margin:8px 0 14px;}

/* ========== 版本长卡 ========== */
.ver-list{display:flex;flex-direction:column;gap:20px;}
.ver-card{
  display:grid;grid-template-columns:198px 1fr;gap:0;
  border-radius:var(--r-xl);overflow:hidden;
  background:var(--card);border:1px solid var(--line);
  transition:transform var(--dur) ease,border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.ver-card:hover{transform:translateY(-4px);border-color:rgba(124,77,255,.55);box-shadow:var(--shadow);}
.ver-cover{position:relative;overflow:hidden;min-height:150px;}
.ver-cover img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease;}
.ver-card:hover .ver-cover img{transform:scale(1.04);}
.ver-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,10,36,.05),rgba(16,10,36,.6));
}
.ver-cover .badge{position:absolute;left:12px;top:12px;z-index:2;}
.ver-body{padding:22px 24px;display:flex;flex-direction:column;gap:10px;}
.ver-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
.ver-meta .num{color:#C9C2EA;}
.ver-body h3{font-size:17px;font-weight:600;line-height:1.5;}
.ver-body p{font-size:14px;color:var(--muted);line-height:1.8;}
.ver-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:auto;padding-top:6px;}
.ver-tags{display:flex;flex-wrap:wrap;gap:8px;}
.ver-arrow{
  width:36px;height:36px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--cyan);
  transition:transform var(--dur) ease,border-color var(--dur) ease,background var(--dur) ease;
}
.ver-arrow svg{width:18px;height:18px;}
.ver-card:hover .ver-arrow{transform:translateX(4px);border-color:var(--cyan);background:rgba(33,230,193,.1);}

/* ========== 指标卡 ========== */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.metric{
  padding:24px;border-radius:var(--r-lg);
  background:var(--panel);border:1px solid var(--line);
  transition:border-color var(--dur) ease,transform var(--dur) ease;
}
.metric:hover{border-color:rgba(33,230,193,.45);transform:translateY(-3px);}
.metric .m-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.metric .m-ico{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:rgba(124,77,255,.16);border:1px solid rgba(124,77,255,.32);color:#CFC0FF;
}
.metric .m-ico svg{width:20px;height:20px;}
.metric .m-val{font-size:30px;font-weight:700;line-height:1.2;color:#fff;}
.metric .m-val span{font-size:15px;color:var(--muted);font-weight:500;margin-left:4px;}
.metric .m-label{font-size:14px;font-weight:600;margin-top:6px;}
.metric .m-desc{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.7;}

/* ========== 升级流程 ========== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.step{
  position:relative;padding:26px 24px;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(32,22,69,.95),rgba(26,17,54,.95));
  border:1px solid var(--line);
}
.step-no{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:var(--grad);color:#fff;font-weight:700;font-size:15px;margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);line-height:1.8;}
.step ul{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.step li{display:flex;gap:8px;font-size:13px;color:#C4BCE4;}
.step li svg{width:16px;height:16px;color:var(--cyan);flex-shrink:0;margin-top:4px;}

/* ========== FAQ ========== */
.faq-wrap{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start;}
.faq-col{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border-radius:var(--r-md);background:var(--panel);border:1px solid var(--line);
  overflow:hidden;transition:border-color var(--dur) ease;
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item.is-open{border-color:rgba(124,77,255,.5);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q .plus{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--cyan);
  transition:transform 240ms ease,border-color var(--dur) ease;
}
.faq-q .plus svg{width:16px;height:16px;}
.faq-item.is-open .plus{transform:rotate(45deg);border-color:var(--cyan);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 240ms ease;
}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--muted);}
.faq-item.is-open .faq-a{max-height:320px;}

/* ========== 横滑合集 ========== */
.hscroll{
  display:flex;gap:20px;overflow-x:auto;padding-bottom:8px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.hscroll::-webkit-scrollbar{display:none;}
.hcard{
  flex:0 0 280px;scroll-snap-align:start;
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--card);border:1px solid var(--line);
  transition:transform var(--dur) ease,border-color var(--dur) ease;
}
.hcard:hover{transform:translateY(-4px);border-color:rgba(33,230,193,.5);}
.hcard-img{position:relative;aspect-ratio:4/3;overflow:hidden;}
.hcard-img img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease;}
.hcard:hover .hcard-img img{transform:scale(1.04);}
.hcard-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,10,36,0) 45%,rgba(16,10,36,.85));}
.hcard-img .badge{position:absolute;left:12px;bottom:12px;z-index:2;}
.hcard-body{padding:16px 18px 20px;}
.hcard-body h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.hcard-body p{font-size:13px;color:var(--muted);line-height:1.75;}
.hcard-foot{display:flex;align-items:center;justify-content:space-between;margin-top:12px;font-size:12px;color:#8E86B8;}

/* ========== CTA 横幅 ========== */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);padding:44px 48px;
  background:linear-gradient(120deg,#5A31D6 0%,#7C4DFF 42%,#1FB69C 100%);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 20px 50px rgba(124,77,255,.28);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),transparent 65%);
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;color:#fff;margin-bottom:8px;}
.cta-band p{font-size:15px;color:rgba(255,255,255,.86);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2;}
.cta-actions .btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.4);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;color:#fff;}
.cta-actions .btn-warm{background:#fff;color:#42249C;box-shadow:0 10px 24px rgba(12,6,32,.28);}
.cta-actions .btn-warm:hover{filter:none;background:#F4F0FF;}

/* ========== 页脚 ========== */
.site-footer{
  margin-top:88px;padding:56px 0 28px;
  background:linear-gradient(180deg,rgba(26,17,54,.6),rgba(16,10,36,1));
  border-top:1px solid var(--line);
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.foot-brand p{font-size:13px;line-height:1.85;color:var(--muted);margin-top:16px;max-width:320px;}
.foot-col h4{font-size:14px;font-weight:600;margin-bottom:16px;}
.foot-col ul{display:flex;flex-direction:column;gap:10px;}
.foot-col a{font-size:13px;color:var(--muted);transition:color var(--dur) ease;}
.foot-col a:hover{color:var(--cyan);}
.foot-acc-btn{
  display:none;width:100%;align-items:center;justify-content:space-between;
  font-size:14px;font-weight:600;padding:12px 0;color:var(--text);
}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7A719F;
}

/* ========== 响应式 ========== */
@media (max-width:1279px){
  .hero-grid{gap:40px;}
  .nav-search input{width:130px;}
}
@media (max-width:1023px){
  :root{--sec:64px;}
  .nav-inner{padding:0 24px;height:56px;}
  .channel-inner{padding:0 24px;height:52px;}
  .container{padding:0 24px;}
  .nav-menu{
    position:absolute;top:56px;left:16px;right:16px;margin-left:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:var(--panel);border:1px solid var(--line-strong);
    border-radius:var(--r-md);padding:12px;
    box-shadow:var(--shadow);display:none;
  }
  .nav-menu.is-open{display:flex;}
  .nav-menu a{padding:12px 14px;font-size:15px;}
  .nav-menu a[aria-current="page"]::after{display:none;}
  .nav-menu a[aria-current="page"]{background:rgba(124,77,255,.2);}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:40px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:-1;}
  .hero-panel{right:12px;top:12px;}
  .cat-layout{grid-template-columns:1fr;gap:28px;}
  .side-dir{position:static;}
  .side-dir ul{flex-direction:row;flex-wrap:wrap;border-left:none;gap:8px;}
  .side-dir a{border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 14px;font-size:13px;}
  .side-dir a:hover{padding-left:14px;border-color:var(--cyan);}
  .side-dir a.is-active{border-color:var(--purple);background:rgba(124,77,255,.16);}
  .side-card{display:none;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .foot-brand{grid-column:1/-1;}
  .cta-band{padding:36px 28px;}
}
@media (max-width:767px){
  :root{--sec:48px;}
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;}
  .channel-inner{padding:0 16px;}
  .breadcrumb{padding-top:20px;}
  .hero-badges .badge{padding:7px 12px;}
  .hero-actions .btn{width:100%;}
  .ver-card{grid-template-columns:1fr;}
  .ver-cover{min-height:180px;aspect-ratio:16/9;}
  .ver-body{padding:18px;}
  .metric-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-col h4{display:none;}
  .foot-acc-btn{display:flex;}
  .foot-col ul{display:none;padding-bottom:12px;}
  .foot-col.is-open ul{display:flex;}
  .foot-acc-btn svg{transition:transform 200ms ease;}
  .foot-col.is-open .foot-acc-btn svg{transform:rotate(180deg);}
  .cta-band{padding:32px 20px;border-radius:var(--r-lg);}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  body{font-size:15px;}
  .h1{font-size:26px;}
  .h2{font-size:21px;}
  .lead{font-size:15px;}
  .ver-body h3{font-size:16px;}
  .hcard{flex:0 0 240px;}
  .brand-text .b1{font-size:15px;}
  .hero-panel{padding:10px 12px;min-width:120px;}
  .hero-panel .v{font-size:20px;}
}

/* roulang page: category2 */
:root{
  --brand:#7C4DFF;
  --brand-2:#21E6C1;
  --accent:#FF6B4A;
  --data:#FFE24D;
  --bg:#100A24;
  --panel:#1A1136;
  --card:#201645;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#EDE9FF;
  --muted:#A79FD0;
  --read-bg:#FBF9FF;
  --read-text:#221A3B;
  --read-muted:#5B5478;
  --grad:linear-gradient(135deg,#7C4DFF 0%,#21E6C1 100%);
  --grad-soft:linear-gradient(135deg,rgba(124,77,255,.55),rgba(33,230,193,.35));
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 12px 32px rgba(12,6,32,.55);
  --shadow-soft:0 8px 22px rgba(12,6,32,.35);
  --ease:180ms ease;
  --container:1200px;
  --header-h:64px;
}
*,*::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","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
svg{display:block}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  height:var(--header-h);
  background:rgba(16,10,36,.85);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;height:100%;
  display:flex;align-items:center;gap:22px;padding:0 32px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--grad);
  display:grid;place-items:center;box-shadow:0 6px 18px rgba(124,77,255,.35);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.b1{font-size:15px;font-weight:700;letter-spacing:.01em}
.b2{font-size:11px;color:var(--muted);letter-spacing:.04em}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-menu a{
  position:relative;padding:8px 13px;border-radius:10px;
  font-size:14.5px;color:var(--muted);transition:color var(--ease),background var(--ease);
}
.nav-menu a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-menu a[aria-current="page"]{color:var(--text);font-weight:600}
.nav-menu a[aria-current="page"]::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(124,77,255,.22)}
.nav-search svg{width:16px;height:16px;color:var(--muted);flex:0 0 auto}
.nav-search input{
  width:172px;background:none;border:0;outline:none;font-size:13.5px;color:var(--text);
}
.nav-search input::placeholder{color:#7E76A8}
.nav-login{font-size:14px;color:var(--muted);padding:8px 6px;transition:color var(--ease)}
.nav-login:hover{color:var(--brand-2)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:11px;
  border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;transition:background var(--ease);
}
.nav-toggle svg{width:20px;height:20px}
.nav-toggle:hover{background:rgba(255,255,255,.06)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform var(--ease),filter var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(124,77,255,.32)}
.btn-grad:hover{filter:brightness(1.08)}
.btn-grad:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand-2);color:#fff;background:rgba(33,230,193,.08)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:56px;padding:0 30px;font-size:16px}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-2);font-size:14.5px;font-weight:600;transition:gap var(--ease),color var(--ease)}
.btn-link:hover{gap:10px;color:#fff}
.btn-link svg{width:16px;height:16px}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;
  border-radius:8px;font-size:12px;font-weight:600;line-height:1;
}
.badge-num{background:rgba(255,226,77,.14);color:var(--data);border:1px solid rgba(255,226,77,.3)}
.badge-teal{background:rgba(33,230,193,.1);color:var(--brand-2);border:1px solid rgba(33,230,193,.35)}
.badge-hot{background:linear-gradient(135deg,#FF6B4A,#FF9166);color:#fff}
.badge-plain{background:rgba(255,255,255,.06);color:var(--muted);border:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--brand-2);background:rgba(33,230,193,.09);
  border:1px solid rgba(33,230,193,.22);
}

/* ---------- 面包屑 ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:rgba(26,17,54,.55)}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:14px 0;flex-wrap:wrap}
.crumb a{color:var(--muted);transition:color var(--ease)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:#5C5488}
.crumb [aria-current="page"]{color:#D8D2F5}
.crumb-line{display:flex;align-items:center;gap:8px}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(720px 340px at 12% -10%,rgba(124,77,255,.35),transparent 65%),
    radial-gradient(560px 300px at 92% 6%,rgba(33,230,193,.18),transparent 68%),
    linear-gradient(180deg,#150D2E 0%,#100A24 100%);
  padding:56px 0 64px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.hero-copy{max-width:640px}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;margin-bottom:18px}
.hero-copy h1{
  font-size:clamp(28px,4.6vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero-copy h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:16.5px;line-height:1.85;color:var(--muted);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.stat-row{display:flex;flex-wrap:wrap;gap:12px}
.stat{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.045);border:1px solid var(--line);font-size:13px;color:var(--muted);
}
.stat svg{width:16px;height:16px;color:var(--brand-2)}
.stat strong{color:var(--data);font-weight:700;font-size:14px}
.hero-media{position:relative;border-radius:var(--r-lg);padding:1px;background:var(--grad-soft)}
.hero-media img{
  width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:calc(var(--r-lg) - 1px);
}
.hero-media::after{
  content:"";position:absolute;inset:1px;border-radius:calc(var(--r-lg) - 1px);pointer-events:none;
  background:linear-gradient(180deg,rgba(16,10,36,0) 45%,rgba(16,10,36,.85) 100%);
}
.hero-media .badge{position:absolute;left:18px;bottom:18px;z-index:2}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,3vw,30px);line-height:1.3;font-weight:700}
.section-head p{font-size:14.5px;color:var(--muted);margin-top:8px;max-width:620px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  color:var(--brand-2);letter-spacing:.08em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--grad)}

/* ---------- 筛选条 ---------- */
.filter-bar{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:16px 20px;box-shadow:var(--shadow-soft);
}
.filter-search{
  flex:1 1 300px;display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:999px;padding:10px 18px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.filter-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(124,77,255,.2)}
.filter-search svg{width:18px;height:18px;color:var(--muted);flex:0 0 auto}
.filter-search input{flex:1;min-width:0;background:none;border:0;outline:none;font-size:14.5px}
.filter-search input::placeholder{color:#7E76A8}
.chip-row{display:flex;gap:8px;flex-wrap:wrap}
.chip{
  height:36px;padding:0 16px;border-radius:999px;font-size:13.5px;color:var(--muted);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  display:inline-flex;align-items:center;transition:all var(--ease);
}
.chip:hover{color:var(--text);border-color:var(--line-strong)}
.chip.is-active{color:#fff;background:var(--grad);border-color:transparent;font-weight:600}

/* ---------- 瀑布卡片 ---------- */
.waterfall{column-count:2;column-gap:24px;margin-top:32px}
.wf-card{
  break-inside:avoid;margin-bottom:24px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:block;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.wf-card:hover{transform:translateY(-4px);border-color:rgba(124,77,255,.55);box-shadow:var(--shadow)}
.wf-card:hover .wf-media img{transform:scale(1.03)}
.wf-media{position:relative;overflow:hidden}
.wf-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 380ms ease}
.wf-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,10,36,0) 50%,rgba(16,10,36,.85) 100%);
}
.wf-media .badge{position:absolute;left:14px;top:14px;z-index:2}
.wf-body{padding:20px 22px 22px}
.wf-body h3{font-size:17px;font-weight:600;line-height:1.45;margin:10px 0 10px}
.wf-body p{font-size:14.5px;color:var(--muted);line-height:1.8}
.wf-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);
}
.wf-meta .go{display:inline-flex;align-items:center;gap:4px;color:var(--brand-2);font-weight:600;transition:transform var(--ease)}
.wf-card:hover .wf-meta .go{transform:translateX(4px)}
.wf-body .tag{margin-right:8px}

/* ---------- 上手路径 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:32px}
.step{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 22px;position:relative;transition:border-color var(--ease),transform var(--ease);
}
.step:hover{border-color:rgba(33,230,193,.4);transform:translateY(-4px)}
.step-num{
  width:38px;height:38px;border-radius:12px;background:rgba(124,77,255,.16);
  border:1px solid rgba(124,77,255,.4);color:#C9B8FF;
  display:grid;place-items:center;font-size:15px;font-weight:700;margin-bottom:16px;
}
.step h3{font-size:16.5px;font-weight:600;margin-bottom:10px}
.step p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- 仪表盘 ---------- */
.meter-band{
  background:linear-gradient(135deg,rgba(26,17,54,.95),rgba(32,22,69,.9));
  border:1px solid var(--line);border-radius:var(--r-lg);padding:40px;box-shadow:var(--shadow-soft);
}
.meter-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:28px}
.meter h3{font-size:15.5px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.meter h3 b{color:var(--data);font-size:14px;font-variant-numeric:tabular-nums}
.meter-track{height:8px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.meter-fill{height:100%;border-radius:999px;background:var(--grad)}
.meter p{font-size:13.5px;color:var(--muted);margin-top:12px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:32px auto 0;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:border-color var(--ease)}
.faq-item.is-open{border-color:rgba(124,77,255,.55)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;line-height:1.6;
}
.faq-q .plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform 240ms ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--brand-2);border-radius:2px;
}
.faq-q .plus::before{left:0;top:10px;width:22px;height:2px}
.faq-q .plus::after{left:10px;top:0;width:2px;height:22px}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- 横滑推荐 ---------- */
.rail-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:24px}
.rail{display:flex;gap:20px;overflow-x:auto;padding-bottom:10px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  flex:0 0 280px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:transform var(--ease),border-color var(--ease);
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(33,230,193,.45)}
.rail-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.rail-card .rc-body{padding:18px 20px 20px}
.rail-card h3{font-size:16px;font-weight:600;margin-bottom:8px}
.rail-card p{font-size:13.5px;color:var(--muted);line-height:1.75}
.rail-card .rc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:12.5px;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(135deg,#5A2BE0 0%,#7C4DFF 45%,#21E6C1 130%);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 20px 46px rgba(60,25,160,.45);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.14);filter:blur(6px);
}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);line-height:1.3;font-weight:700;color:#fff;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.85);font-size:15px;max-width:520px}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap}
.cta-actions .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.45);color:#fff}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;color:#fff}
.cta-actions .btn-grad{background:#fff;color:#3B1E9E;box-shadow:0 10px 24px rgba(20,8,60,.28)}
.cta-actions .btn-grad:hover{filter:brightness(.97)}
.cta-gap{margin-bottom:88px}

/* ---------- 提示 ---------- */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:rgba(33,230,193,.06);border:1px solid rgba(33,230,193,.22);
  border-radius:var(--r-md);padding:18px 22px;font-size:14.5px;color:#CBE9E2;
}
.notice svg{width:20px;height:20px;color:var(--brand-2);flex:0 0 auto;margin-top:3px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B0720;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{font-size:14px;color:var(--muted);line-height:1.85;max-width:340px}
.foot-col h4{font-size:14.5px;font-weight:700;margin-bottom:16px;color:#D8D2F5}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14px;color:var(--muted);transition:color var(--ease)}
.foot-col a:hover{color:var(--brand-2)}
.foot-acc-btn{
  display:none;width:100%;justify-content:space-between;align-items:center;
  font-size:14.5px;font-weight:700;padding:12px 0;color:#D8D2F5;
}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7E76A8;
}
.foot-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.foot-bottom a:hover{color:var(--brand-2)}

/* ---------- 移动底栏 ---------- */
.mobile-bar{display:none}

/* ---------- 骨架 ---------- */
.skeleton{background:linear-gradient(90deg,rgba(255,255,255,.05),rgba(255,255,255,.11),rgba(255,255,255,.05));background-size:200% 100%;animation:sk 1.4s linear infinite;border-radius:var(--r-sm)}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-search input{width:130px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .steps{grid-template-columns:repeat(2,1fr)}
  .meter-grid{grid-template-columns:1fr;gap:26px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:980px){
  .nav-menu{
    position:absolute;top:var(--header-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--panel);border-bottom:1px solid var(--line);
    padding:14px 20px 20px;display:none;box-shadow:var(--shadow);
  }
  .nav-menu.open{display:flex}
  .nav-menu a{padding:13px 12px;font-size:15px;border-radius:10px}
  .nav-menu a[aria-current="page"]::after{display:none}
  .nav-menu a[aria-current="page"]{background:rgba(124,77,255,.16)}
  .nav-search{display:none}
  .nav-login{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:900px){
  .container{padding:0 24px}
  .nav-inner{padding:0 24px}
  .section{padding:64px 0}
  .page-hero{padding:40px 0 48px}
  .waterfall{column-count:2}
}
@media (max-width:767px){
  body{padding-bottom:64px}
  .container{padding:0 16px}
  .nav-inner{padding:0 16px;height:56px;gap:12px}
  :root{--header-h:56px}
  .brand-text .b1{font-size:14px}
  .brand-mark{width:32px;height:32px;border-radius:10px}
  .section{padding:48px 0}
  .page-hero{padding:32px 0 40px}
  .waterfall{column-count:1}
  .steps{grid-template-columns:1fr}
  .cta-band{padding:30px 24px;flex-direction:column;align-items:flex-start}
  .cta-gap{margin-bottom:56px}
  .foot-grid{grid-template-columns:1fr;gap:0}
  .foot-col ul{display:none;padding-bottom:12px}
  .foot-col ul.open{display:flex}
  .foot-acc-btn{display:flex;border-top:1px solid var(--line)}
  .foot-col h4{display:none}
  .hero-actions .btn{flex:1 1 100%}
  .rail-card{flex:0 0 240px}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:rgba(16,10,36,.94);backdrop-filter:blur(8px);
    border-top:1px solid var(--line);padding:8px 12px;gap:8px;
  }
  .mobile-bar a{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
    font-size:11.5px;color:var(--muted);padding:6px 0;border-radius:12px;
  }
  .mobile-bar a svg{width:20px;height:20px}
  .mobile-bar a.is-active{color:var(--brand-2)}
}
@media (max-width:480px){
  body{font-size:15px}
  .hero-copy h1{font-size:26px}
  .hero-lead{font-size:15px}
  .btn{height:46px;padding:0 18px;font-size:14.5px}
  .wf-body{padding:16px}
  .meter-band{padding:24px 18px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
}

/* roulang page: category3 */
:root{
  --primary:#7C4DFF;
  --primary-2:#21E6C1;
  --accent:#FF6B4A;
  --data:#FFE24D;
  --bg:#100A24;
  --panel:#1A1136;
  --card:#201645;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --text:#EDE9FF;
  --muted:#A79FD0;
  --read-bg:#FBF9FF;
  --read-text:#221A3B;
  --read-muted:#5B5478;
  --grad:linear-gradient(135deg,#7C4DFF 0%,#21E6C1 100%);
  --grad-hot:linear-gradient(135deg,#FF6B4A 0%,#FF9A4A 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --sh:0 12px 32px rgba(12,6,32,.55);
  --container:1200px;
  --header-h:64px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",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;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(900px 480px at 12% -6%,rgba(124,77,255,.28),transparent 62%),
    radial-gradient(760px 420px at 92% 4%,rgba(33,230,193,.14),transparent 60%);
  background-repeat:no-repeat;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--primary-2);outline-offset:2px;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:var(--header-h);
  background:rgba(16,10,36,.85);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--container);height:100%;margin:0 auto;padding:0 32px;
  display:flex;align-items:center;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(124,77,255,.4);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text .b1{font-size:15px;font-weight:700;letter-spacing:-.01em;}
.brand-text .b2{font-size:11px;color:var(--muted);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-menu a{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:14px;color:var(--muted);white-space:nowrap;
}
.nav-menu a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-menu a[aria-current="page"]{color:var(--text);font-weight:600;}
.nav-menu a[aria-current="page"]::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--grad);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 16px;border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(124,77,255,.22);}
.nav-search svg{width:17px;height:17px;color:var(--muted);flex-shrink:0;}
.nav-search input{
  width:170px;border:0;background:transparent;color:var(--text);
  font-size:14px;font-family:inherit;outline:none;
}
.nav-search input::placeholder{color:var(--muted);}
.nav-login{font-size:14px;color:var(--muted);padding:8px 6px;}
.nav-login:hover{color:var(--primary-2);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text);
}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease,color .18s ease;
}
.btn svg{width:18px;height:18px;}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-lg{height:56px;padding:0 30px;font-size:16px;}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(124,77,255,.34);}
.btn-grad:hover{filter:brightness(1.08);box-shadow:0 12px 28px rgba(124,77,255,.46);}
.btn-accent{background:var(--grad-hot);color:#fff;box-shadow:0 8px 22px rgba(255,107,74,.3);}
.btn-accent:hover{filter:brightness(1.07);box-shadow:0 12px 28px rgba(255,107,74,.42);}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--text);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:rgba(33,230,193,.65);background:rgba(33,230,193,.08);}
.btn-text{padding:0;height:auto;color:var(--primary-2);font-weight:600;font-size:14px;gap:6px;}
.btn-text:hover{color:#fff;}
.btn-text svg{width:16px;height:16px;transition:transform .18s ease;}
.btn-text:hover svg{transform:translateX(4px);}
.btn:active{transform:translateY(1px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none;}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 10px;border-radius:8px;
  font-size:12px;font-weight:600;white-space:nowrap;
}
.badge svg{width:13px;height:13px;}
.badge-num{background:rgba(255,226,77,.14);color:var(--data);border:1px solid rgba(255,226,77,.3);}
.badge-state{background:rgba(33,230,193,.1);color:var(--primary-2);border:1px solid rgba(33,230,193,.36);}
.badge-hot{background:rgba(255,107,74,.16);color:#FFB3A0;border:1px solid rgba(255,107,74,.42);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--muted);background:rgba(255,255,255,.04);
  border:1px solid var(--line);transition:all .18s ease;
}
.tag:hover,.tag.active{color:#fff;border-color:rgba(124,77,255,.6);background:rgba(124,77,255,.16);}

/* ---------- 面包屑 ---------- */
.crumb{padding:20px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"›";color:rgba(167,159,208,.6);}
.crumb a:hover{color:var(--primary-2);}
.crumb [aria-current="page"]{color:var(--text);}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;margin-top:20px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(16,10,36,.96) 0%,rgba(16,10,36,.86) 42%,rgba(26,17,54,.72) 100%);
}
.page-hero .hero-bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.4;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
  padding:72px 0 80px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--primary-2);
  background:rgba(33,230,193,.1);border:1px solid rgba(33,230,193,.3);
  margin-bottom:20px;
}
.hero-inner h1{
  font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero-inner h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:16px;color:var(--muted);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-metrics{display:flex;flex-wrap:wrap;gap:12px;}
.metric{
  display:inline-flex;align-items:center;gap:9px;
  height:38px;padding:0 15px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.metric svg{width:15px;height:15px;color:var(--primary-2);}
.metric b{color:var(--data);font-weight:700;}
.hero-visual{position:relative;}
.hero-visual .shot{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(124,77,255,.35);
  box-shadow:0 24px 60px rgba(12,6,32,.6),0 0 0 6px rgba(124,77,255,.07);
}
.hero-visual .shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-visual .shot::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,10,36,0) 42%,rgba(16,10,36,.88) 100%);
}
.shot-caption{
  position:absolute;left:20px;right:20px;bottom:18px;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.shot-caption span{font-size:13px;color:#EDE9FF;}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section-alt{background:linear-gradient(180deg,rgba(26,17,54,.55),rgba(16,10,36,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,3vw,30px);line-height:1.3;font-weight:700;margin-bottom:8px;}
.section-head p{font-size:14px;color:var(--muted);}
.section-head .head-right{flex-shrink:0;}

/* ---------- 频道标签条 ---------- */
.channel-bar{display:flex;flex-wrap:wrap;gap:10px;padding:26px 0 0;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:161px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,rgba(124,77,255,.75),rgba(33,230,193,.28),rgba(124,77,255,.12));
}
.tl-item{display:grid;grid-template-columns:148px 28px minmax(0,1fr);align-items:start;}
.tl-time{padding:22px 16px 0 0;text-align:right;}
.tl-date{display:block;font-size:15px;font-weight:600;color:var(--text);}
.tl-clock{display:block;font-size:12px;color:var(--muted);margin-top:2px;}
.tl-dot{position:relative;height:100%;}
.tl-dot::after{
  content:"";position:absolute;left:50%;top:28px;transform:translateX(-50%);
  width:14px;height:14px;border-radius:50%;background:var(--grad);
  box-shadow:0 0 0 4px rgba(124,77,255,.18);
}
.tl-card{
  margin-bottom:22px;padding:24px;border-radius:var(--r-lg);
  background:var(--card);border:1px solid var(--line);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(124,77,255,.55);box-shadow:var(--sh);}
.tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;}
.tl-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.tl-card p{font-size:14px;color:var(--muted);max-width:640px;}
.tl-body{display:flex;gap:20px;align-items:flex-start;}
.tl-thumb{
  width:96px;height:96px;flex:0 0 96px;object-fit:cover;border-radius:var(--r-md);
  border:1px solid var(--line);background:#2a1f57;
}
.tl-foot{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.1);}
.tl stock{display:none;}
.tl-stock{font-size:13px;color:var(--muted);margin-right:auto;}
.tl-stock b{color:var(--data);}

/* ---------- 礼包类型速查 ---------- */
.type-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.type-card{
  border-radius:var(--r-lg);overflow:hidden;background:var(--card);
  border:1px solid var(--line);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.type-card:hover{transform:translateY(-4px);border-color:rgba(33,230,193,.5);box-shadow:var(--sh);}
.type-card .cover{position:relative;overflow:hidden;}
.type-card .cover img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s ease;}
.type-card:hover .cover img{transform:scale(1.03);}
.type-card .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,10,36,0) 40%,rgba(16,10,36,.85) 100%);}
.type-card .body{padding:22px;}
.type-card h3{font-size:17px;font-weight:600;margin:10px 0 8px;}
.type-card p{font-size:14px;color:var(--muted);}
.type-card ul{margin-top:14px;display:grid;gap:8px;}
.type-card li{display:flex;gap:8px;font-size:13px;color:var(--muted);}
.type-card li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary-2);margin-top:8px;flex-shrink:0;}

/* ---------- 领取流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  position:relative;padding:26px 22px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(124,77,255,.14),rgba(26,17,54,.5));
  border:1px solid var(--line);
}
.step .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  font-weight:700;font-size:15px;color:#fff;margin-bottom:16px;
}
.step h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.step p{font-size:13.5px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  border-radius:var(--r-md);background:var(--card);border:1px solid var(--line);
  overflow:hidden;transition:border-color .18s ease;
}
.faq-item.open{border-color:rgba(124,77,255,.55);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--primary-2);}
.faq-ic{width:20px;height:20px;flex-shrink:0;color:var(--primary-2);transition:transform .24s ease;}
.faq-item.open .faq-ic{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a-inner{padding:0 22px 22px;font-size:15px;color:var(--muted);}

/* ---------- 横滑推荐 ---------- */
.scroll-row{
  display:flex;gap:20px;overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:10px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.scroll-row::-webkit-scrollbar{display:none;}
.col-card{
  flex:0 0 280px;scroll-snap-align:start;
  border-radius:var(--r-lg);overflow:hidden;background:var(--card);
  border:1px solid var(--line);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.col-card:hover{transform:translateY(-4px);border-color:rgba(124,77,255,.55);box-shadow:var(--sh);}
.col-card .cover{position:relative;overflow:hidden;}
.col-card .cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.col-card:hover .cover img{transform:scale(1.03);}
.col-card .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,10,36,0) 45%,rgba(16,10,36,.85) 100%);}
.col-card .body{padding:20px;}
.col-card h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.col-card p{font-size:13.5px;color:var(--muted);}
.col-card .meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:12.5px;color:var(--muted);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:48px 44px;margin:0 auto 88px;
  background:linear-gradient(120deg,rgba(124,77,255,.9),rgba(33,230,193,.75));
  box-shadow:0 24px 60px rgba(124,77,255,.3);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.14);
}
.cta-band h2{position:relative;z-index:2;font-size:clamp(20px,2.6vw,28px);line-height:1.35;color:#fff;margin-bottom:8px;}
.cta-band p{position:relative;z-index:2;font-size:14.5px;color:rgba(255,255,255,.88);}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-ghost{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.26);border-color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:#0C0719;
  padding:72px 0 28px;
  margin-top:0;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.foot-brand p{margin-top:16px;font-size:13.5px;color:var(--muted);max-width:340px;}
.foot-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text);}
.foot-col ul{display:grid;gap:10px;}
.foot-col a{font-size:13.5px;color:var(--muted);}
.foot-col a:hover{color:var(--primary-2);}
.foot-acc-btn{display:none;}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}

/* ---------- 移动端底部操作条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:58px;background:rgba(16,10,36,.95);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  align-items:center;justify-content:space-around;
}
.mobile-bar a{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  font-size:11px;color:var(--muted);
}
.mobile-bar a svg{width:20px;height:20px;}
.mobile-bar a[aria-current="page"]{color:var(--primary-2);}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-search input{width:130px;}
  .type-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1100px){
  .nav-search{display:none;}
  .hero-inner{gap:40px;}
}
@media (max-width:960px){
  .nav-menu{display:none;}
  .nav-login{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-menu.open{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;margin:0;
    position:fixed;top:var(--header-h);left:0;right:0;
    background:#150E30;border-bottom:1px solid var(--line);
    padding:14px 20px 22px;z-index:65;
  }
  .nav-menu.open a{padding:12px 8px;font-size:15px;}
  .nav-menu.open a[aria-current="page"]::after{left:8px;right:auto;width:22px;bottom:8px;}
  .hero-inner{grid-template-columns:1fr;padding:52px 0 60px;}
  .hero-visual{order:-1;}
  .section{padding:64px 0;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--header-h:56px;}
  .container{padding:0 18px;}
  .nav-inner{padding:0 18px;gap:12px;}
  body{padding-bottom:58px;line-height:1.8;}
  .section{padding:48px 0;}
  .timeline::before{left:6px;top:8px;bottom:8px;}
  .tl-item{grid-template-columns:1fr;padding-left:26px;position:relative;}
  .tl-item::after{
    content:"";position:absolute;left:0;top:22px;width:13px;height:13px;border-radius:50%;
    background:var(--grad);box-shadow:0 0 0 3px rgba(124,77,255,.2);
  }
  .tl-time{text-align:left;padding:0 0 10px;}
  .tl-dot{display:none;}
  .tl-body{flex-direction:column;}
  .tl-thumb{width:100%;height:auto;flex:0 0 auto;aspect-ratio:16/9;}
  .type-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-band{padding:32px 24px;margin-bottom:64px;}
  .cta-band .cta-actions .btn{width:100%;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .hero-actions .btn{width:100%;}
  .mobile-bar{display:flex;}
  .foot-grid{grid-template-columns:1fr;gap:0;}
  .foot-brand{margin-bottom:28px;}
  .foot-col{border-top:1px solid var(--line);padding:14px 0;}
  .foot-col h4{display:none;}
  .foot-acc-btn{
    display:flex;align-items:center;justify-content:space-between;
    width:100%;font-size:14px;font-weight:600;color:var(--text);padding:4px 0;
  }
  .foot-acc-btn svg{transition:transform .2s ease;}
  .foot-col.open .foot-acc-btn svg{transform:rotate(180deg);}
  .foot-col ul{display:none;padding-top:12px;}
  .foot-col.open ul{display:grid;}
  .foot-bottom{justify-content:flex-start;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .hero-inner h1{font-size:26px;}
  .tl-card{padding:18px;}
  .type-card .body{padding:18px;}
  .col-card{flex:0 0 240px;}
  .metric{height:34px;font-size:12px;padding:0 12px;}
}

/* roulang page: category4 */
:root{
  --c-bg:#100A24;
  --c-panel:#1A1136;
  --c-card:#201645;
  --c-line:rgba(255,255,255,.08);
  --c-line-2:rgba(255,255,255,.16);
  --c-text:#EDE9FF;
  --c-sub:#A79FD0;
  --c-main:#7C4DFF;
  --c-cyan:#21E6C1;
  --c-orange:#FF6B4A;
  --c-yellow:#FFE24D;
  --grad-main:linear-gradient(135deg,#7C4DFF 0%,#21E6C1 100%);
  --grad-warm:linear-gradient(135deg,#FF6B4A 0%,#FF9A5A 100%);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 12px 32px rgba(12,6,32,.55);
  --ease:180ms ease;
  --sp:8px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-main);outline-offset:2px;border-radius:6px}
::selection{background:rgba(124,77,255,.4);color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(16,10,36,.85);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 32px;
  height:64px;display:flex;align-items:center;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad-main);
  box-shadow:0 6px 18px rgba(124,77,255,.4);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text .b1{font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-text .b2{font-size:11px;color:var(--c-sub);letter-spacing:.04em}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-menu a{
  position:relative;padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--c-sub);transition:color var(--ease),background var(--ease);
}
.nav-menu a:hover{color:var(--c-text);background:rgba(255,255,255,.05)}
.nav-menu a[aria-current="page"]{color:var(--c-text);font-weight:600}
.nav-menu a[aria-current="page"]::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;
  border-radius:2px;background:var(--grad-main);
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;width:230px;
  border-radius:999px;background:rgba(255,255,255,.05);
  border:1px solid var(--c-line);transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-search:focus-within{border-color:var(--c-main);box-shadow:0 0 0 3px rgba(124,77,255,.22)}
.nav-search svg{width:17px;height:17px;color:var(--c-sub);flex-shrink:0}
.nav-search input{
  width:100%;background:none;border:0;outline:none;font-size:14px;color:var(--c-text);
}
.nav-search input::placeholder{color:#7C74A6}
.nav-login{font-size:15px;color:var(--c-sub);padding:8px 6px;transition:color var(--ease)}
.nav-login:hover{color:var(--c-text)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--c-line);align-items:center;justify-content:center;
  color:var(--c-text);
}
.nav-toggle svg{width:20px;height:20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),filter var(--ease),border-color var(--ease),background var(--ease);
}
.btn svg{width:18px;height:18px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:56px;padding:0 30px;font-size:16px}
.btn-grad{background:var(--grad-main);color:#fff;box-shadow:0 8px 22px rgba(124,77,255,.35)}
.btn-grad:hover{filter:brightness(1.08);box-shadow:0 10px 28px rgba(124,77,255,.5)}
.btn-warm{background:var(--grad-warm);color:#fff;box-shadow:0 8px 22px rgba(255,107,74,.32)}
.btn-warm:hover{filter:brightness(1.07);box-shadow:0 10px 26px rgba(255,107,74,.46)}
.btn-ghost{border:1px solid var(--c-line-2);color:var(--c-text);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--c-main);background:rgba(124,77,255,.12)}
.btn:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--c-cyan);transition:gap var(--ease),color var(--ease);
}
.btn-link svg{width:16px;height:16px;transition:transform var(--ease)}
.btn-link:hover{gap:10px}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:8px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge svg{width:14px;height:14px}
.badge-num{background:rgba(255,226,77,.12);color:var(--c-yellow);border:1px solid rgba(255,226,77,.32)}
.badge-state{background:rgba(33,230,193,.1);color:var(--c-cyan);border:1px solid rgba(33,230,193,.34)}
.badge-hot{background:var(--grad-warm);color:#fff}
.badge-soft{background:rgba(124,77,255,.14);color:#C9B8FF;border:1px solid rgba(124,77,255,.34)}

/* ---------- 面包屑 ---------- */
.crumb{
  padding:22px 0 0;font-size:13px;color:var(--c-sub);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.crumb a{transition:color var(--ease)}
.crumb a:hover{color:var(--c-text)}
.crumb .sep{opacity:.5}
.crumb .now{color:#CFC7F2}

/* ---------- 首屏 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  opacity:.26;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 320px at 12% 20%,rgba(124,77,255,.42),transparent 70%),
             radial-gradient(520px 300px at 88% 82%,rgba(33,230,193,.22),transparent 72%),
             linear-gradient(180deg,rgba(16,10,36,.6),rgba(16,10,36,.94));
}
.hero-wrap{position:relative;z-index:2;padding:56px 0 64px}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;border:1px solid rgba(33,230,193,.35);background:rgba(33,230,193,.08);
  font-size:12px;font-weight:600;color:var(--c-cyan);margin-bottom:18px;
}
.hero-grid h1{
  font-size:clamp(28px,4.6vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
}
.hero-grid h1 em{
  font-style:normal;
  background:var(--grad-main);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:16px;max-width:560px;color:#C6BEE8;font-size:16px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.hero-badges .badge{height:32px;padding:0 14px}

.spec-card{
  position:relative;border-radius:var(--r-xl);padding:26px;
  background:linear-gradient(160deg,rgba(32,22,69,.95),rgba(26,17,54,.92));
  border:1px solid rgba(255,255,255,.1);
  box-shadow:var(--shadow);
}
.spec-card::before{
  content:"";position:absolute;inset:-1px;border-radius:calc(var(--r-xl) + 1px);z-index:-1;
  background:var(--grad-main);opacity:.35;
}
.spec-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.spec-head h3{font-size:17px;font-weight:600}
.spec-list{margin-top:6px}
.spec-list li{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.09);font-size:14px;
}
.spec-list li:last-child{border-bottom:0}
.spec-list .k{color:var(--c-sub)}
.spec-list .v{color:var(--c-yellow);font-weight:600}
.spec-note{margin-top:14px;font-size:13px;color:var(--c-sub);line-height:1.7}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0}
.section.alt{background:linear-gradient(180deg,rgba(26,17,54,.65),rgba(16,10,36,.2))}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;
}
.sec-head h2{font-size:clamp(22px,3vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.sec-head p{margin-top:10px;color:var(--c-sub);font-size:15px;max-width:640px}
.sec-kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--c-cyan);margin-bottom:10px;
}

/* ---------- 2×2 棋盘卡 ---------- */
.board{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.board-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-xl);border:1px solid var(--c-line);
  background:var(--c-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.board-card:hover{transform:translateY(-4px);border-color:rgba(124,77,255,.5);box-shadow:var(--shadow)}
.board-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#1A1136}
.board-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.board-card:hover .board-media img{transform:scale(1.03)}
.board-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,10,36,0) 40%,rgba(16,10,36,.85));
}
.board-media .tag-row{position:absolute;left:18px;bottom:16px;z-index:2;display:flex;gap:8px;flex-wrap:wrap}
.board-body{padding:26px 26px 28px;display:flex;flex-direction:column;gap:14px;flex:1}
.board-body h3{font-size:20px;font-weight:600;line-height:1.4}
.board-body > p{color:#C0B7E4;font-size:15px}
.tick-list{display:flex;flex-direction:column;gap:9px;margin-top:2px}
.tick-list li{position:relative;padding-left:22px;font-size:14px;color:#BFB6E2;line-height:1.75}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--grad-main);
}
.board-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;gap:12px}

/* ---------- 三步排查 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  position:relative;padding:26px;border-radius:var(--r-lg);
  background:var(--c-panel);border:1px solid var(--c-line);
  transition:transform var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(33,230,193,.4)}
.step-no{
  width:42px;height:42px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:17px;color:#fff;background:var(--grad-main);margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--c-sub);line-height:1.8}

/* ---------- 参数卡 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.spec-item{
  padding:22px;border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(32,22,69,.85),rgba(26,17,54,.7));
  border:1px solid var(--c-line);transition:border-color var(--ease),transform var(--ease);
}
.spec-item:hover{border-color:rgba(33,230,193,.38);transform:translateY(-3px)}
.spec-item .sk{font-size:13px;color:var(--c-sub);display:flex;align-items:center;gap:8px}
.spec-item .sk svg{width:16px;height:16px;color:var(--c-cyan)}
.spec-item .sv{margin-top:10px;font-size:19px;font-weight:700;color:var(--c-text)}
.spec-item .sd{margin-top:6px;font-size:13px;color:#8F87B8}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  border:1px solid var(--c-line);border-radius:var(--r-md);
  background:var(--c-panel);margin-bottom:14px;overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
.faq-item:hover{border-color:rgba(124,77,255,.4)}
.faq-item.open{border-color:rgba(124,77,255,.55);background:#1D1340}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:16px;font-weight:600;line-height:1.6;
}
.faq-q .plus{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line-2);position:relative;
  transition:transform 240ms ease,border-color var(--ease),background var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-cyan);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:11px;height:1.8px}
.faq-q .plus::after{width:1.8px;height:11px}
.faq-item.open .faq-q .plus{transform:rotate(45deg);border-color:var(--c-cyan);background:rgba(33,230,193,.12)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms ease,padding 260ms ease;
  padding:0 22px;
}
.faq-item.open .faq-a{max-height:460px;padding:0 22px 22px}
.faq-a p{font-size:15px;line-height:1.9;color:#C0B7E4}
.faq-a p + p{margin-top:12px}

/* ---------- 帮助 CTA 卡 + 表单 ---------- */
.help-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  border:1px solid rgba(124,77,255,.35);
  background:linear-gradient(135deg,rgba(124,77,255,.28),rgba(33,230,193,.16) 60%,rgba(26,17,54,.9));
  padding:40px;
  display:grid;grid-template-columns:5fr 4fr;gap:40px;align-items:center;
}
.help-card::after{
  content:"";position:absolute;width:360px;height:360px;right:-120px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(33,230,193,.32),transparent 70%);pointer-events:none;
}
.help-card h2{font-size:clamp(22px,2.8vw,28px);font-weight:700;line-height:1.35}
.help-card .lead{margin-top:14px;color:#D5CEF3;font-size:15px;max-width:520px}
.help-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.help-form{
  position:relative;z-index:2;background:rgba(16,10,36,.72);
  border:1px solid var(--c-line);border-radius:var(--r-lg);padding:24px;
}
.help-form h3{font-size:16px;font-weight:600;margin-bottom:16px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--c-sub);margin-bottom:7px}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);border:1px solid var(--c-line);outline:none;
  font-size:14px;transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:#736BA0}
.field input:focus,.field textarea:focus{border-color:var(--c-main);box-shadow:0 0 0 3px rgba(124,77,255,.22)}
.field textarea{resize:vertical;min-height:86px;line-height:1.7}
.form-tip{font-size:12px;color:#8F87B8;line-height:1.7;margin-top:10px}

/* ---------- 横滑推荐 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 14px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail:focus-visible{outline:2px solid var(--c-main);outline-offset:4px;border-radius:var(--r-lg)}
.rail-card{
  flex:0 0 280px;scroll-snap-align:start;
  border-radius:var(--r-lg);border:1px solid var(--c-line);
  background:var(--c-card);overflow:hidden;
  transition:transform var(--ease),border-color var(--ease);
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(33,230,193,.45)}
.rail-card .rc-media{aspect-ratio:4/3;overflow:hidden;background:#1A1136}
.rail-card .rc-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.rail-card:hover .rc-media img{transform:scale(1.04)}
.rail-card .rc-body{padding:18px}
.rail-card h3{font-size:16px;font-weight:600;line-height:1.5}
.rail-card p{margin-top:8px;font-size:13px;color:var(--c-sub);line-height:1.75}
.rail-card .rc-foot{margin-top:14px;display:flex;align-items:center;justify-content:space-between}
.rail-hint{font-size:13px;color:#7C74A6;margin-top:6px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;border-top:1px solid var(--c-line);
  background:linear-gradient(180deg,rgba(26,17,54,.8),rgba(16,10,36,1));
  padding:64px 0 28px;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{margin-top:18px;font-size:14px;color:var(--c-sub);line-height:1.85;max-width:320px}
.foot-col h4{font-size:15px;font-weight:600;margin-bottom:16px}
.foot-col ul li{margin-bottom:11px}
.foot-col ul a{font-size:14px;color:var(--c-sub);transition:color var(--ease)}
.foot-col ul a:hover{color:var(--c-cyan)}
.foot-acc-btn{display:none}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C74A6;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-inner{padding:0 24px;gap:16px}
  .nav-search{width:180px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .board{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .help-card{grid-template-columns:1fr;gap:28px;padding:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:64px 0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .nav-inner{padding:0 16px;height:56px}
  .nav-menu{
    position:fixed;inset:56px 0 auto 0;
    flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:16px;
    background:rgba(16,10,36,.98);
    border-bottom:1px solid var(--c-line);
    box-shadow:var(--shadow);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:transform 200ms ease,opacity 200ms ease;
  }
  .nav-menu.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-menu a{padding:12px 14px;font-size:16px}
  .nav-menu a[aria-current="page"]::after{display:none}
  .nav-menu a[aria-current="page"]{background:rgba(124,77,255,.16)}
  .nav-search{display:none}
  .nav-login{display:none}
  .nav-toggle{display:inline-flex}
  .hero-wrap{padding:32px 0 44px}
  .section{padding:48px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .spec-grid{grid-template-columns:1fr}
  .board-body{padding:20px}
  .help-card{padding:24px}
  .foot-grid{grid-template-columns:1fr;gap:0}
  .foot-col{border-bottom:1px solid var(--c-line);padding:14px 0}
  .foot-col h4{display:none}
  .foot-acc-btn{
    display:flex;width:100%;align-items:center;justify-content:space-between;
    padding:8px 0;font-size:15px;font-weight:600;color:var(--c-text);
  }
  .foot-acc-btn svg{transition:transform 200ms ease}
  .foot-acc-btn[aria-expanded="true"] svg{transform:rotate(180deg)}
  .foot-col ul{max-height:0;overflow:hidden;transition:max-height 220ms ease}
  .foot-col ul.open{max-height:280px;padding-top:10px}
  .foot-brand{padding-bottom:20px;border-bottom:1px solid var(--c-line)}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .site-footer{margin-top:56px;padding-top:40px}
}
@media (max-width:520px){
  body{font-size:15px}
  .hero-grid h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .rail-card{flex:0 0 240px}
  .board-body h3{font-size:18px}
  .faq-q{font-size:15px;padding:16px}
  .faq-item.open .faq-a{padding:0 16px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}