/* roulang page: index */
:root{
  --bg:#080D18;
  --bg-2:#0E1626;
  --card:#131F33;
  --primary:#2C6BFF;
  --primary-soft:rgba(44,107,255,.14);
  --accent:#FF6B2C;
  --glow:#17E0B0;
  --text:#E9EFFA;
  --text-2:#B7C4D9;
  --muted:#8FA0BC;
  --line:rgba(130,170,230,.16);
  --line-strong:rgba(130,170,230,.34);
  --glass:rgba(19,31,51,.62);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-btn:0 0 0 1px rgba(44,107,255,.45),0 10px 28px rgba(44,107,255,.30);
  --shadow-btn-hover:0 0 0 1px rgba(44,107,255,.60),0 14px 36px rgba(44,107,255,.42);
  --container:1200px;
  --pad-section:96px;
  --ease:.18s ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:radial-gradient(1200px 620px at 88% -10%,rgba(44,107,255,.20),transparent 62%),var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),opacity var(--ease);}
a:hover{color:#6A9BFF;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:0;line-height:1.3;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--glow);outline-offset:2px;}
::selection{background:rgba(44,107,255,.42);color:#fff;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--pad-section) 0;position:relative;}
.section--tight{padding:64px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head h2{font-size:32px;font-weight:700;}
.section-head .sub{
  margin-top:12px;
  font-size:15px;
  color:var(--muted);
  max-width:640px;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
  padding:6px 2px;
}
.link-more i{font-size:12px;transition:transform var(--ease);}
.link-more:hover{color:var(--glow);}
.link-more:hover i{transform:translateX(4px);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:72px;
  background:rgba(8,13,24,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:28px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;
  border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#2C6BFF,#17E0B0);
  color:#04101F;
  font-weight:800;
  font-size:16px;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 1px rgba(44,107,255,.45),0 8px 20px rgba(44,107,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:800;}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--r-sm);
  background:none;
  border:0;
  cursor:pointer;
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(44,107,255,.10);}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(44,107,255,.8);
}
.nav-link i{font-size:10px;opacity:.7;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  cursor:pointer;
  transition:all var(--ease);
}
.icon-btn:hover{color:#fff;border-color:var(--line-strong);background:rgba(44,107,255,.12);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:0;
  cursor:pointer;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  padding:13px 26px;
  line-height:1;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn i{font-size:13px;}
.btn-primary{
  background:linear-gradient(180deg,#3D78FF,#2C6BFF);
  color:#fff;
  box-shadow:var(--shadow-btn);
}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-btn-hover);filter:brightness(1.08);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(44,107,255,.45),0 6px 16px rgba(44,107,255,.26);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{color:#fff;border-color:var(--glow);background:rgba(23,224,176,.08);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-text{
  background:none;border:0;padding:0;
  color:var(--text-2);
  display:inline-flex;align-items:center;gap:8px;
}
.btn-text:hover{color:var(--glow);}

/* mega */
.mega-wrap{position:relative;}
.mega-panel{
  position:absolute;
  top:calc(100% + 14px);
  right:-160px;
  width:940px;
  max-width:calc(100vw - 64px);
  padding:26px;
  border-radius:var(--r-lg);
  background:rgba(14,22,38,.97);
  border:1px solid var(--line);
  box-shadow:0 26px 60px rgba(0,0,0,.55);
  display:grid;
  grid-template-columns:1.1fr 1.2fr 1fr;
  gap:24px;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);
  transition-delay:.12s;
}
.mega-col h4{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--muted);
  font-weight:600;
  margin-bottom:14px;
}
.mega-cats{display:flex;flex-wrap:wrap;gap:8px;}
.mega-cats a{
  font-size:13px;
  padding:7px 13px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  color:var(--text-2);
  background:rgba(255,255,255,.02);
}
.mega-cats a:hover{color:#fff;border-color:var(--primary);background:var(--primary-soft);}
.mega-list li + li{margin-top:12px;}
.mega-list a{display:block;color:var(--text);font-size:14px;line-height:1.5;}
.mega-list a:hover{color:var(--glow);}
.mega-list span{
  display:block;
  font-size:12px;
  color:var(--muted);
  margin-top:4px;
  font-variant-numeric:tabular-nums;
}
.mega-card{
  border-radius:var(--r-md);
  overflow:hidden;
  position:relative;
  border:1px solid var(--line);
  background:var(--card);
}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.85;}
.mega-card .cap{
  padding:12px 14px;
  font-size:13px;
  color:var(--text-2);
  line-height:1.5;
}
.drawer-toggle{display:none;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:76px 0 88px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(112deg,rgba(8,13,24,.94) 12%,rgba(8,13,24,.72) 58%,rgba(8,13,24,.90) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  background-color:var(--bg-2);
}
.hero::after{
  content:"";
  position:absolute;
  right:-8%;
  top:-30%;
  width:640px;height:640px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(44,107,255,.34),transparent 66%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:56px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--glow);
  padding:7px 15px;
  border-radius:var(--r-pill);
  border:1px solid rgba(23,224,176,.36);
  background:rgba(23,224,176,.08);
  margin-bottom:22px;
}
.hero h1{
  font-size:48px;
  font-weight:800;
  line-height:1.22;
  margin-bottom:20px;
}
.hero h1 span{color:#7FAAFF;}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:560px;
  line-height:1.8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:36px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-meta div{font-size:13px;color:var(--muted);}
.hero-meta strong{
  display:block;
  font-size:22px;
  color:var(--text);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  line-height:1.4;
}
.hero-card{
  position:relative;
  border-radius:var(--r-lg);
  padding:14px;
  background:rgba(19,31,51,.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(150,190,255,.18);
  box-shadow:0 24px 60px rgba(0,0,0,.50);
  transform:rotate(-0.6deg);
}
.hero-card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:14px;
  background:var(--card);
}
.hero-card .badge-float{
  position:absolute;
  right:-12px;
  bottom:-12px;
  padding:10px 18px;
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,#3D78FF,#2C6BFF);
  color:#fff;
  font-size:13px;
  font-weight:600;
  box-shadow:var(--shadow-btn);
  display:inline-flex;
  align-items:center;
  gap:8px;
}

/* ---------- 目录卡 ---------- */
.catalog-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.catalog-card{
  position:relative;
  display:block;
  padding:30px 30px 28px 34px;
  border-radius:var(--r-md);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  color:var(--text);
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.catalog-card::before{
  content:"";
  position:absolute;
  left:0;top:22px;bottom:22px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--primary);
  box-shadow:0 0 16px rgba(44,107,255,.9);
  opacity:0;
  transition:opacity var(--ease);
}
.catalog-card:hover{
  color:var(--text);
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:0 14px 34px rgba(0,0,0,.45);
}
.catalog-card:hover::before{opacity:1;}
.catalog-card .num{
  font-size:40px;
  font-weight:800;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(255,107,44,.75);
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
  display:block;
}
.catalog-card h3{font-size:20px;font-weight:600;margin-bottom:8px;}
.catalog-card p{font-size:14px;color:var(--muted);line-height:1.7;}
.catalog-card .foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:20px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
  font-variant-numeric:tabular-nums;
}
.catalog-card .foot i{transition:transform var(--ease);font-size:12px;}
.catalog-card:hover .foot i{transform:translateX(5px);color:var(--glow);}

/* ---------- 卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-md);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  color:var(--text);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.card:hover{
  color:var(--text);
  transform:translateY(-3px);
  border-color:var(--line-strong);
  box-shadow:0 16px 36px rgba(0,0,0,.48);
}
.card-media{position:relative;overflow:hidden;background:var(--card);}
.card-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .45s ease-out;
}
.card:hover .card-media img{transform:scale(1.04);}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  padding:4px 10px;
  border-radius:6px;
  border:1px solid rgba(44,107,255,.55);
  background:rgba(44,107,255,.16);
  color:#9AC0FF;
  line-height:1.6;
  white-space:nowrap;
}
.badge-accent{
  border-color:rgba(255,107,44,.55);
  background:rgba(255,107,44,.14);
  color:#FFB38C;
}
.card-media .badge{position:absolute;left:12px;top:12px;backdrop-filter:blur(6px);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.card-body h3{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body p{
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  padding-top:18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.card-foot i{font-size:12px;transition:transform var(--ease);}
.card:hover .card-foot i{transform:translateX(4px);color:var(--glow);}

/* ---------- 横向列表 ---------- */
.news-list{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(14,22,38,.72);
  overflow:hidden;
}
.news-row{
  display:grid;
  grid-template-columns:132px 1fr auto;
  gap:22px;
  align-items:center;
  padding:18px 22px;
  color:var(--text);
  border-bottom:1px solid var(--line);
  transition:background var(--ease);
}
.news-row:last-child{border-bottom:0;}
.news-row:hover{background:rgba(255,255,255,.04);color:var(--text);}
.news-thumb{
  width:132px;
  aspect-ratio:16/10;
  border-radius:10px;
  object-fit:cover;
  background:var(--card);
  border:1px solid var(--line);
}
.news-main .top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px;}
.news-main h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:6px;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-main p{
  font-size:13.5px;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-side{
  display:flex;
  align-items:center;
  gap:16px;
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.news-side i{transition:transform var(--ease);}
.news-row:hover .news-side i{transform:translateX(4px);color:var(--glow);}
.empty-state{
  padding:64px 24px;
  text-align:center;
  color:var(--muted);
}
.empty-state i{font-size:30px;color:rgba(44,107,255,.65);display:block;margin-bottom:16px;}
.empty-state p{font-size:15px;margin-bottom:20px;}

/* ---------- 推荐横卡 ---------- */
.reco-scroll{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.reco-card{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:14px;
  align-items:center;
  padding:14px;
  border-radius:var(--r-md);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  color:var(--text);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease);
}
.reco-card:hover{color:var(--text);transform:translateY(-2px);border-color:var(--line-strong);}
.reco-card img{
  width:96px;
  aspect-ratio:1/1;
  object-fit:cover;
  border-radius:10px;
  background:var(--card);
}
.reco-card h3{
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.reco-card span{
  display:block;
  font-size:12.5px;
  color:var(--muted);
  margin-top:6px;
  font-variant-numeric:tabular-nums;
}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  position:relative;
  transition:border-color var(--ease);
}
.faq-item::before{
  content:"";
  position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:0 3px 3px 0;
  background:var(--glow);
  box-shadow:0 0 14px rgba(23,224,176,.9);
  opacity:0;
  transition:opacity var(--ease);
}
.faq-item[open]::before{opacity:1;}
.faq-item[open]{border-color:var(--line-strong);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 58px 20px 24px;
  font-size:17px;
  font-weight:600;
  position:relative;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\2b";
  position:absolute;
  right:22px;top:50%;
  transform:translateY(-50%);
  font-size:18px;
  color:var(--primary);
  transition:transform .25s ease-out,color var(--ease);
  font-weight:400;
}
.faq-item[open] summary::after{content:"\d7";transform:translateY(-50%) rotate(180deg);color:var(--glow);}
.faq-item .faq-answer{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--r-lg);
  padding:46px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  border:1px solid rgba(150,190,255,.22);
  background-image:linear-gradient(100deg,rgba(11,19,34,.94),rgba(17,29,50,.80)),url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  background-color:var(--bg-2);
  box-shadow:0 22px 54px rgba(0,0,0,.45);
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;left:-60px;bottom:-120px;
  width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,107,255,.30),transparent 68%);
  pointer-events:none;
}
.cta-band .cta-text{position:relative;z-index:2;}
.cta-band h2{font-size:26px;font-weight:700;margin-bottom:10px;}
.cta-band p{font-size:14.5px;color:var(--text-2);}
.cta-band .cta-actions{position:relative;z-index:2;display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.share-group{display:flex;align-items:center;gap:8px;margin-left:4px;}
.share-group a{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--text-2);
  background:rgba(255,255,255,.03);
  transition:all var(--ease);
}
.share-group a:hover{color:#fff;border-color:var(--glow);background:rgba(23,224,176,.12);}

/* ---------- footer ---------- */
.site-footer{
  margin-top:0;
  background:#050A13;
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,rgba(44,107,255,0),rgba(44,107,255,.65),rgba(23,224,176,.4),rgba(44,107,255,0)) 1;
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;left:-140px;bottom:-200px;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,107,255,.16),transparent 70%);
  pointer-events:none;
}
.footer-main{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding:64px 0 48px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--muted);max-width:280px;line-height:1.8;}
.footer-col h4{
  font-size:13px;
  color:var(--text);
  font-weight:600;
  margin-bottom:18px;
  letter-spacing:.06em;
}
.footer-col li + li{margin-top:11px;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--glow);}
.footer-col .info{font-size:14px;color:var(--muted);line-height:1.9;}
.footer-share{display:flex;gap:8px;margin-top:18px;}
.footer-share a{
  width:34px;height:34px;display:grid;place-items:center;
  border-radius:50%;border:1px solid var(--line);color:var(--muted);
  transition:all var(--ease);
}
.footer-share a:hover{color:#fff;border-color:var(--primary);background:var(--primary-soft);}
.footer-bottom{
  position:relative;
  z-index:2;
  border-top:1px solid rgba(130,170,230,.12);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--muted);
}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--text-2);}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--text-2);font-size:13px;
  background:rgba(255,255,255,.03);
  transition:all var(--ease);
}
.to-top:hover{color:#fff;border-color:var(--glow);background:rgba(23,224,176,.10);}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .45s ease-out,transform .45s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .hero h1{font-size:42px;}
  .mega-panel{right:-220px;width:820px;}
}
@media (max-width:1024px){
  :root{--pad-section:72px;}
  .container{padding:0 26px;}
  .main-nav{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:38px;}
  .hero-card{max-width:520px;transform:none;}
  .grid-4,.reco-scroll{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px;}
  .drawer-toggle{
    display:grid;place-items:center;
    width:38px;height:38px;border-radius:var(--r-sm);
    border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-2);
    cursor:pointer;
  }
}
@media (max-width:768px){
  :root{--pad-section:48px;}
  .container{padding:0 20px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .section-head h2{font-size:24px;}
  .hero{padding:48px 0 56px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15px;}
  .hero-meta{gap:20px;}
  .hero-meta strong{font-size:19px;}
  .hero-actions .btn{width:100%;}
  .hero-card .badge-float{right:8px;bottom:8px;font-size:12px;padding:8px 14px;}
  .catalog-grid{grid-template-columns:1fr;}
  .grid-3,.grid-4,.reco-scroll{grid-template-columns:1fr;}
  .reco-scroll{
    display:flex;
    overflow-x:auto;
    gap:14px;
    padding-bottom:8px;
    scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;
    mask-image:linear-gradient(90deg,#000 88%,transparent 100%);
  }
  .reco-card{min-width:266px;scroll-snap-align:start;}
  .reco-card img{width:82px;height:82px;aspect-ratio:1/1;}
  .news-row{grid-template-columns:84px 1fr;gap:14px;padding:16px;}
  .news-thumb{width:84px;border-radius:8px;}
  .news-side{display:none;}
  .news-main h3{font-size:15.5px;}
  .news-main p{display:none;}
  .cta-band{padding:30px 24px;flex-direction:column;align-items:flex-start;}
  .cta-band h2{font-size:21px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{width:100%;}
  .share-group{margin-left:0;}
  .footer-main{grid-template-columns:1fr;padding:44px 0 32px;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .faq-item summary{font-size:16px;padding:18px 50px 18px 20px;}
}
@media (max-width:520px){
  .hero h1{font-size:26px;}
  .brand-text strong{font-size:15px;}
  .header-actions .btn-sm{display:none;}
  .catalog-card{padding:24px 22px 22px 26px;}
  .catalog-card .num{font-size:32px;}
  .card-body{padding:16px 18px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* mobile drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,16,.66);
  z-index:80;opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s;
}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  z-index:81;background:#0A1220;border-left:1px solid var(--line);
  padding:22px;transform:translateX(102%);
  transition:transform .26s ease-out;
  overflow-y:auto;
}
body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
body.drawer-open .mobile-drawer{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-2);
  cursor:pointer;display:grid;place-items:center;
}
.drawer-group{margin-bottom:22px;}
.drawer-group h4{font-size:12px;letter-spacing:.12em;color:var(--muted);margin-bottom:12px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 14px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:15px;border:1px solid transparent;
}
.drawer-nav a:hover,.drawer-nav a.is-active{
  color:#fff;background:rgba(44,107,255,.12);border-color:rgba(44,107,255,.35);
}
.drawer-cta{display:block;width:100%;margin-top:8px;}

/* roulang page: category1 */
:root{
  --bg:#080D18;
  --surface:#0E1626;
  --card:#131F33;
  --text:#E9F0FB;
  --muted:#94A6C2;
  --dim:#6E809C;
  --primary:#2C6BFF;
  --primary-soft:rgba(44,107,255,.16);
  --accent:#FF6B2C;
  --cyan:#17E0B0;
  --line:rgba(130,170,230,.16);
  --line-strong:rgba(130,170,230,.34);
  --r-card:16px;
  --r-block:20px;
  --r-pill:999px;
  --r-badge:6px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-lift:0 16px 34px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(44,107,255,.45),0 10px 28px rgba(44,107,255,.30);
  --glow-hover:0 0 0 1px rgba(44,107,255,.55),0 14px 36px rgba(44,107,255,.36);
  --sp-section:72px;
  --t:.18s ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg);
  background-image:radial-gradient(1200px 620px at 82% -12%,rgba(44,107,255,.18),transparent 62%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{letter-spacing:0;line-height:1.3}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
::selection{background:rgba(44,107,255,.45);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--sp-section) 0}
.section--tight{padding:48px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:32px;font-weight:700}
.section-head .sub{color:var(--muted);font-size:15px;margin-top:8px;max-width:640px}
.link-more{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:14px;font-weight:600;transition:var(--t)}
.link-more:hover{color:#fff;gap:12px}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(8,13,24,.84);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(145deg,#3a78ff,#1c4fd0);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 0 0 1px rgba(44,107,255,.5),0 8px 20px rgba(44,107,255,.32);
  font-variant-numeric:tabular-nums;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:0}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:9px 13px;border-radius:10px;border:0;background:transparent;
  font-size:15px;color:var(--muted);cursor:pointer;transition:var(--t);white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(44,107,255,.10)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(44,107,255,.9);
}
.nav-link i{font-size:10px;opacity:.7}
.mega-wrap{position:relative}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:940px;
  display:grid;grid-template-columns:1.1fr 1.2fr .9fr;gap:24px;
  padding:24px;border-radius:var(--r-block);
  background:rgba(14,22,38,.94);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(150,190,255,.18);
  box-shadow:0 24px 60px rgba(0,0,0,.55);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
  z-index:90;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;font-weight:600;color:var(--dim);letter-spacing:.08em;margin-bottom:14px}
.mega-cats{display:flex;flex-wrap:wrap;gap:8px}
.mega-cats a{
  padding:7px 14px;border-radius:var(--r-pill);font-size:13px;color:var(--muted);
  border:1px solid var(--line);transition:var(--t);
}
.mega-cats a:hover{color:#fff;border-color:var(--line-strong);background:var(--primary-soft)}
.mega-list li+li{margin-top:12px}
.mega-list a{display:block;font-size:14px;color:var(--text);transition:var(--t)}
.mega-list a:hover{color:var(--cyan)}
.mega-list span{display:block;font-size:12px;color:var(--dim);margin-top:3px;font-variant-numeric:tabular-nums}
.mega-card{display:block;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--card);transition:var(--t)}
.mega-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#0b1220}
.mega-card .cap{display:block;padding:12px 14px;font-size:12.5px;color:var(--muted);line-height:1.6}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;border-radius:50%;
  border:1px solid var(--line);background:transparent;color:var(--muted);
  cursor:pointer;transition:var(--t);
}
.icon-btn:hover{color:#fff;border-color:var(--line-strong);background:rgba(44,107,255,.12)}
.nav-toggle{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--text);cursor:pointer;place-items:center}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:var(--t);
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:linear-gradient(180deg,#3a78ff,#2C6BFF);color:#fff;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--glow-hover);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(44,107,255,.45),0 6px 16px rgba(44,107,255,.28)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{transform:translateY(-1px);border-color:rgba(150,190,255,.5);background:rgba(44,107,255,.10)}
.btn-ghost:active{transform:translateY(0)}
.btn-text{background:transparent;color:var(--cyan);padding:6px 2px;font-weight:600}
.btn-text:hover{color:#fff;gap:12px}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--dim);padding:24px 0 0;
}
.breadcrumb a{color:var(--muted);transition:var(--t)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--text)}

/* ===== 分类页头 ===== */
.cat-hero{
  position:relative;overflow:hidden;
  margin-top:16px;
  border:1px solid var(--line);border-radius:var(--r-block);
  background-color:#0A1220;
  background-image:linear-gradient(115deg,rgba(8,13,24,.94) 12%,rgba(8,13,24,.72) 55%,rgba(8,13,24,.9) 100%),url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  padding:52px 44px 46px;
}
.cat-hero::before{
  content:"";position:absolute;top:-140px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,107,255,.35),transparent 68%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;left:-60px;bottom:-160px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,224,176,.18),transparent 70%);
  pointer-events:none;
}
.cat-hero-inner{position:relative;display:flex;align-items:flex-end;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cat-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,107,44,.42);background:rgba(255,107,44,.12);
  color:#FFB38C;font-size:12px;font-weight:600;letter-spacing:.04em;margin-bottom:18px;
}
.cat-hero h1{font-size:44px;font-weight:800;line-height:1.22;max-width:760px}
.cat-hero h1 span{color:var(--cyan)}
.cat-hero .lead{margin-top:16px;font-size:16px;color:var(--muted);max-width:600px}
.stat-pills{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.stat-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(19,31,51,.66);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  font-size:13px;color:var(--muted);
}
.stat-pill b{color:var(--text);font-size:16px;font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* ===== 卡片网格 ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,rgba(19,31,51,.94),rgba(14,22,38,.94));
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-lift)}
.card-media{position:relative;aspect-ratio:16/10;background:#0B1220;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out}
.card:hover .card-media img{transform:scale(1.045)}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,13,24,0) 42%,rgba(8,13,24,.78) 100%);
}
.card-media .badge{
  position:absolute;left:14px;bottom:14px;z-index:2;
  padding:5px 12px;border-radius:var(--r-badge);
  font-size:11.5px;font-weight:600;letter-spacing:.03em;
  background:rgba(44,107,255,.22);border:1px solid rgba(44,107,255,.55);
  color:#BBD2FF;backdrop-filter:blur(8px);
}
.card-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1;gap:10px}
.card-title{font-size:18px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-title{color:#fff}
.card-desc{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--dim);font-variant-numeric:tabular-nums}
.card-foot i{color:var(--cyan);transition:var(--t)}
.card:hover .card-foot i{transform:translateX(4px)}

/* ===== 图文区块 ===== */
.split{
  display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;
  padding:36px;border-radius:var(--r-block);
  background:linear-gradient(150deg,rgba(19,31,51,.86),rgba(11,18,32,.86));
  border:1px solid var(--line);
}
.split-media{position:relative;border-radius:14px;overflow:hidden;background:#0B1220;box-shadow:var(--shadow-card)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(8,13,24,0) 40%,rgba(8,13,24,.6) 100%);
}
.split-body h2{font-size:30px;font-weight:700;margin-bottom:16px}
.split-body p{color:var(--muted);font-size:15.5px;line-height:1.9}
.split-body p+p{margin-top:14px}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text)}
.check-list i{color:var(--cyan);margin-top:6px;font-size:13px}
.split-body .btn{margin-top:26px}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  position:relative;border:1px solid var(--line);border-radius:14px;
  background:rgba(19,31,51,.72);overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{border-color:var(--line-strong);background:rgba(19,31,51,.9)}
.faq-item[open]::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 14px rgba(44,107,255,.75);
}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--cyan);font-size:13px;transition:transform .25s ease-out;flex-shrink:0}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.9}

/* ===== 相关分类 ===== */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  display:flex;flex-direction:column;gap:12px;
  padding:24px;border-radius:var(--r-card);
  border:1px solid var(--line);background:rgba(19,31,51,.7);
  transition:var(--t);position:relative;overflow:hidden;
}
.related-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--primary);opacity:0;transition:var(--t);
  box-shadow:0 0 16px rgba(44,107,255,.8);
}
.related-card:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(19,31,51,.92)}
.related-card:hover::before{opacity:1}
.related-card .num{
  font-size:26px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.related-card h3{font-size:19px;font-weight:600}
.related-card p{font-size:14px;color:var(--muted);line-height:1.75}
.related-card .go{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--cyan);margin-top:4px}
.related-card:hover .go i{transform:translateX(4px)}
.related-card .go i{transition:var(--t)}

/* ===== CTA ===== */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-block);
  padding:48px 44px;
  background-color:#0A1220;
  background-image:linear-gradient(110deg,rgba(8,13,24,.95),rgba(8,13,24,.7)),url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
  border:1px solid rgba(150,190,255,.18);
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;right:-100px;top:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,107,255,.30),transparent 70%);
}
.cta-copy{position:relative;max-width:560px}
.cta-copy h2{font-size:28px;font-weight:700;margin-bottom:10px}
.cta-copy p{color:var(--muted);font-size:15px}
.cta-actions{position:relative;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.icon-group{display:flex;gap:8px;margin-left:6px}
.icon-group a{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--muted);transition:var(--t);
}
.icon-group a:hover{color:#fff;border-color:var(--line-strong);background:rgba(44,107,255,.14)}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;margin-top:var(--sp-section);
  background:#05080F;
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(44,107,255,.55),rgba(23,224,176,.4),transparent);
}
.site-footer::after{
  content:"";position:absolute;left:-160px;bottom:-200px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,107,255,.14),transparent 70%);pointer-events:none;
}
.footer-main{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;
  padding:64px 0 44px;
}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.8;margin-top:16px;max-width:300px}
.footer-share{display:flex;gap:10px;margin-top:20px}
.footer-share a{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--muted);transition:var(--t);
}
.footer-share a:hover{color:#fff;border-color:var(--line-strong);background:rgba(44,107,255,.14);transform:translateY(-2px)}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--muted);transition:var(--t)}
.footer-col a:hover{color:var(--cyan)}
.footer-col .info{font-size:14px;color:var(--muted);line-height:1.85}
.footer-bottom{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 34px;border-top:1px solid var(--line);
  font-size:13px;color:var(--dim);
}
.footer-bottom .to-top{
  display:inline-flex;align-items:center;gap:8px;color:var(--muted);
  padding:7px 14px;border-radius:var(--r-pill);border:1px solid var(--line);transition:var(--t);
}
.footer-bottom .to-top:hover{color:#fff;border-color:var(--line-strong);background:rgba(44,107,255,.12)}

/* ===== 动效 ===== */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:32px;padding:28px}
  .footer-main{grid-template-columns:1fr 1fr;gap:36px}
  .cat-hero h1{font-size:36px}
  .cat-hero{padding:44px 32px 40px}
}
@media (max-width:960px){
  .main-nav{
    position:fixed;top:72px;right:0;width:min(330px,86vw);height:calc(100vh - 72px);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:18px;margin-left:0;
    background:#0B1322;border-left:1px solid var(--line);
    overflow-y:auto;transform:translateX(100%);transition:transform .28s ease-out;z-index:75;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{justify-content:space-between;padding:14px 12px;font-size:15px;border-radius:10px}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:rgba(44,107,255,.16)}
  .nav-toggle{display:grid}
  .header-actions .btn{display:none}
  .mega-panel{
    position:static;width:auto;display:none;
    grid-template-columns:1fr;gap:20px;padding:18px;margin-top:8px;
    box-shadow:none;background:rgba(19,31,51,.6);
    opacity:1;visibility:visible;transform:none;
  }
  .mega-wrap.is-open .mega-panel{display:grid}
  .mega-wrap:hover .mega-panel{display:none}
  .mega-wrap.is-open:hover .mega-panel{display:grid}
}
@media (max-width:768px){
  .container{padding:0 20px}
  :root{--sp-section:48px}
  .section{padding:48px 0}
  .cat-hero{padding:32px 20px 30px;border-radius:16px}
  .cat-hero h1{font-size:30px}
  .cat-hero .lead{font-size:15px}
  .section-head h2{font-size:24px}
  .split-body h2{font-size:24px}
  .cta-band{padding:32px 22px;border-radius:16px}
  .cta-copy h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .icon-group{margin-left:0;width:100%;justify-content:center}
  .card-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr;gap:32px;padding:44px 0 32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:520px){
  .cat-hero h1{font-size:26px}
  .stat-pill{padding:8px 14px;font-size:12px}
  .card-body{padding:16px}
  .faq-item summary{font-size:16px;padding:16px 18px}
  .faq-answer{padding:0 18px 18px;font-size:14.5px}
  .brand-text em{font-size:10px}
}

/* roulang page: article */
:root{
  --bg:#080D18;
  --bg-2:#0E1626;
  --bg-3:#0A1220;
  --card:#131F33;
  --glass:rgba(19,31,51,.62);
  --primary:#2C6BFF;
  --primary-2:#5B8CFF;
  --accent:#FF6B2C;
  --cyan:#17E0B0;
  --text:#E9EFFB;
  --text-2:#A6B6D2;
  --muted:#6F82A1;
  --line:rgba(130,170,230,.16);
  --line-2:rgba(130,170,230,.34);
  --r-card:16px;
  --r-lg:20px;
  --r-btn:999px;
  --r-input:10px;
  --r-badge:6px;
  --sh-card:0 8px 24px rgba(0,0,0,.35);
  --sh-glow:0 0 0 1px rgba(44,107,255,.45),0 10px 28px rgba(44,107,255,.30);
  --sh-glow-hover:0 0 0 1px rgba(44,107,255,.55),0 14px 36px rgba(44,107,255,.42);
  --pad-sec:96px;
  --pad-sec-sm:48px;
  --t:.18s ease-out;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px;background:var(--bg-3);}
a{color:var(--text);text-decoration:none;transition:color var(--t),opacity var(--t);}
a:hover{color:var(--primary-2);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:0;line-height:1.32;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(44,107,255,.42);color:#fff;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(8,13,24,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(150deg,var(--primary),#1B3E9E);
  color:#fff;
  font-weight:800;
  font-size:18px;
  box-shadow:0 0 0 1px rgba(44,107,255,.45),0 8px 20px rgba(44,107,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-size:16px;font-weight:800;color:#fff;}
.brand-text em{
  font-style:normal;
  font-size:11px;
  color:var(--text-2);
  letter-spacing:.14em;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1;
  min-width:0;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 13px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
  background:transparent;
  border:0;
  cursor:pointer;
  transition:color var(--t),background var(--t);
}
.nav-link i{font-size:10px;opacity:.7;}
.nav-link:hover{color:#fff;background:rgba(44,107,255,.12);}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(44,107,255,.9);
}
.mega-wrap{position:relative;}
.mega-panel{
  position:absolute;
  top:calc(100% + 12px);
  right:0;
  width:min(1000px,calc(100vw - 64px));
  display:grid;
  grid-template-columns:1fr 1.2fr 1fr;
  gap:28px;
  padding:24px;
  border-radius:var(--r-lg);
  background:rgba(14,22,38,.96);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(150,190,255,.18);
  box-shadow:0 24px 60px rgba(0,0,0,.55);
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px);
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.mega-col h4{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--muted);
  font-weight:600;
  margin-bottom:14px;
  text-transform:uppercase;
}
.mega-cats{display:flex;flex-wrap:wrap;gap:8px;}
.mega-cats a{
  padding:7px 13px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  border:1px dashed var(--line-2);
  transition:all var(--t);
}
.mega-cats a:hover{
  color:#fff;
  background:rgba(44,107,255,.18);
  border-style:solid;
  border-color:rgba(44,107,255,.6);
}
.mega-list li + li{border-top:1px solid var(--line);}
.mega-list a{
  display:block;
  padding:10px 0;
  font-size:14px;
  color:var(--text);
  line-height:1.5;
}
.mega-list a span{
  display:block;
  font-size:12px;
  color:var(--muted);
  margin-top:4px;
}
.mega-list a:hover{color:var(--primary-2);}
.mega-card{
  display:block;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--card);
  transition:border-color var(--t),transform var(--t);
}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.mega-card .cap{display:block;padding:12px;font-size:12.5px;color:var(--text-2);line-height:1.6;}
.mega-card:hover{border-color:var(--line-2);transform:translateY(-2px);}
.header-tools{display:flex;align-items:center;gap:12px;}
.tool-search{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:50%;
  color:var(--text-2);
  border:1px solid var(--line);
  transition:all var(--t);
}
.tool-search:hover{color:#fff;border-color:var(--line-2);background:rgba(44,107,255,.14);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  font-size:14.5px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:var(--sh-glow);
}
.btn-primary:hover{
  background:#3D78FF;
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--sh-glow-hover);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(44,107,255,.45),0 4px 14px rgba(44,107,255,.28);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-2);
}
.btn-ghost:hover{color:#fff;border-color:var(--cyan);background:rgba(23,224,176,.08);transform:translateY(-1px);}
.btn-text{
  background:none;
  border:0;
  padding:0;
  color:var(--primary-2);
  font-size:14px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
  cursor:pointer;
}
.btn-text:hover{color:var(--cyan);}
.btn-text i{transition:transform var(--t);}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.drawer-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text);
  cursor:pointer;
}
.drawer-toggle:hover{border-color:var(--line-2);color:#fff;}

/* ---------- mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(4,8,16,.68);
  backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity .2s ease,visibility .2s;
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  width:86%;
  max-width:360px;
  height:100%;
  background:var(--bg-2);
  border-left:1px solid var(--line);
  z-index:90;
  padding:22px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .26s ease-out;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:transparent;color:var(--text);cursor:pointer;
}
.drawer-group h4{font-size:12px;letter-spacing:.14em;color:var(--muted);margin:18px 0 10px;font-weight:600;}
.drawer-group a{
  display:block;
  padding:11px 14px;
  border-radius:12px;
  font-size:14.5px;
  color:var(--text-2);
  border:1px solid transparent;
}
.drawer-group a:hover{color:#fff;background:rgba(44,107,255,.14);border-color:var(--line);}
.drawer-group a.is-active{color:#fff;background:rgba(44,107,255,.18);border-color:rgba(44,107,255,.45);}
.drawer-cta{width:100%;margin-top:20px;}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:26px 0 0;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary-2);}
.breadcrumb .sep{color:rgba(130,170,230,.4);}
.breadcrumb .cur{
  color:var(--text-2);
  max-width:min(560px,60vw);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ---------- article head ---------- */
.article-head{
  position:relative;
  padding:26px 0 30px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-head::before{
  content:"";
  position:absolute;
  top:-140px;right:-120px;
  width:460px;height:460px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(44,107,255,.22),transparent 68%);
  pointer-events:none;
}
.article-head-inner{position:relative;display:flex;align-items:flex-start;gap:32px;justify-content:space-between;}
.article-head-main{max-width:820px;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--r-badge);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--primary-2);
  background:rgba(44,107,255,.13);
  border:1px solid rgba(44,107,255,.42);
}
.badge-accent{
  color:#FFB894;
  background:rgba(255,107,44,.12);
  border-color:rgba(255,107,44,.42);
}
.article-head h1{
  font-size:40px;
  font-weight:800;
  line-height:1.28;
  margin:16px 0 0;
  color:#fff;
}
.meta-row{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:18px;
  margin-top:18px;
  font-size:13.5px;
  color:var(--muted);
}
.meta-row span{display:inline-flex;align-items:center;gap:6px;}
.meta-row i{color:var(--primary-2);font-size:12px;}
.share-group{display:flex;align-items:center;gap:10px;padding-top:6px;}
.share-group a{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--text-2);
  background:rgba(19,31,51,.6);
  transition:all var(--t);
}
.share-group a:hover{
  color:#fff;
  border-color:rgba(44,107,255,.6);
  background:rgba(44,107,255,.2);
  transform:translateY(-2px);
}

/* ---------- article layout ---------- */
.article-section{padding:40px 0 0;}
.article-layout{display:flex;gap:40px;align-items:flex-start;}
.article-main{flex:1 1 auto;min-width:0;}
.article-side{
  flex:0 0 340px;
  width:340px;
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-panel{
  padding:20px;
  border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(150,190,255,.18);
  box-shadow:0 8px 24px rgba(0,0,0,.28);
}
.side-panel h3{
  font-size:14px;
  letter-spacing:.1em;
  color:var(--muted);
  font-weight:600;
  margin-bottom:14px;
}
.toc-list li{border-left:2px solid transparent;transition:border-color var(--t),background var(--t);border-radius:0 8px 8px 0;}
.toc-list li a{
  display:block;
  padding:8px 10px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.55;
}
.toc-list li.lvl3 a{padding-left:24px;font-size:13px;color:var(--muted);}
.toc-list li:hover{border-left-color:rgba(44,107,255,.5);background:rgba(44,107,255,.08);}
.toc-list li:hover a{color:#fff;}
.toc-empty{font-size:13px;color:var(--muted);line-height:1.7;}
.pill-set{display:flex;flex-wrap:wrap;gap:8px;}
.pill-set a{
  padding:7px 13px;
  border-radius:999px;
  font-size:12.5px;
  color:var(--text-2);
  border:1px dashed var(--line-2);
  transition:all var(--t);
}
.pill-set a:hover{
  color:#fff;
  border-style:solid;
  border-color:rgba(44,107,255,.6);
  background:rgba(44,107,255,.18);
}
.mini-card{
  display:flex;
  gap:12px;
  padding:10px;
  border-radius:12px;
  transition:background var(--t),transform var(--t);
}
.mini-card + .mini-card{margin-top:4px;}
.mini-card img{
  width:76px;height:60px;
  flex:0 0 76px;
  object-fit:cover;
  border-radius:10px;
  border:1px solid var(--line);
}
.mini-card .t{font-size:13.5px;line-height:1.55;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.mini-card .d{display:block;font-size:11.5px;color:var(--muted);margin-top:6px;}
.mini-card:hover{background:rgba(44,107,255,.1);transform:translateX(2px);}
.mini-card:hover .t{color:#fff;}
.side-cta{
  padding:22px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(44,107,255,.24),rgba(14,22,38,.9));
  border:1px solid rgba(44,107,255,.4);
  box-shadow:0 0 0 1px rgba(44,107,255,.18),0 12px 30px rgba(44,107,255,.18);
}
.side-cta h3{font-size:16px;color:#fff;letter-spacing:0;margin-bottom:8px;font-weight:700;}
.side-cta p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:16px;}
.side-cta .btn{width:100%;}

/* ---------- entry content ---------- */
.entry-content{
  font-size:16.5px;
  line-height:1.9;
  color:#D8E2F5;
}
.entry-content > * + *{margin-top:1.05em;}
.entry-content h2{
  font-size:26px;
  font-weight:700;
  color:#fff;
  margin-top:2.1em;
  margin-bottom:.6em;
  padding-left:14px;
  position:relative;
  line-height:1.45;
}
.entry-content h2::before{
  content:"";
  position:absolute;
  left:0;top:.22em;bottom:.22em;
  width:3px;
  border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(44,107,255,.85);
}
.entry-content h3{
  font-size:19.5px;
  font-weight:600;
  color:#EFF4FF;
  margin-top:1.8em;
  margin-bottom:.5em;
  line-height:1.5;
}
.entry-content h4{font-size:17px;color:#EFF4FF;margin-top:1.6em;margin-bottom:.4em;}
.entry-content p{margin:0;}
.entry-content a{color:var(--primary-2);border-bottom:1px solid rgba(44,107,255,.45);}
.entry-content a:hover{color:var(--cyan);border-color:var(--cyan);}
.entry-content strong{color:#fff;font-weight:700;}
.entry-content blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  border-left:3px solid var(--primary);
  background:rgba(19,31,51,.66);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
  font-size:15.5px;
  box-shadow:inset 0 0 0 1px rgba(150,190,255,.1);
}
.entry-content blockquote p{margin:0;}
.entry-content ul,.entry-content ol{margin:1.1em 0;padding-left:0;}
.entry-content ul li,.entry-content ol li{
  position:relative;
  padding-left:24px;
  margin:.6em 0;
}
.entry-content ul li::before{
  content:"";
  position:absolute;
  left:6px;top:.78em;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--accent);
}
.entry-content ol{counter-reset:entry-ol;}
.entry-content ol li{counter-increment:entry-ol;}
.entry-content ol li::before{
  content:counter(entry-ol,decimal-leading-zero);
  position:absolute;
  left:0;top:0;
  color:var(--accent);
  font-weight:700;
  font-size:13px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
}
.entry-content img{
  width:100%;
  height:auto;
  border-radius:12px;
  border:1px solid var(--line);
  margin:1.4em 0;
}
.entry-content figure{margin:1.4em 0;}
.entry-content figcaption{
  font-size:13px;
  color:var(--muted);
  text-align:center;
  margin-top:10px;
}
.entry-content table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:14.5px;
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 0 0 1px var(--line);
}
.entry-content thead th{
  background:rgba(44,107,255,.22);
  color:#fff;
  font-weight:600;
  text-align:left;
  padding:12px 16px;
  font-size:13.5px;
  letter-spacing:.02em;
  border:0;
}
.entry-content tbody td{
  padding:12px 16px;
  border:0;
  border-top:1px solid var(--line);
  color:var(--text-2);
}
.entry-content tbody tr:nth-child(even){background:rgba(19,31,51,.72);}
.entry-content tbody tr:hover{background:rgba(44,107,255,.1);}
.entry-content hr{
  border:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line-2),transparent);
  margin:2em 0;
}
.empty-state{
  padding:56px 24px;
  text-align:center;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
}
.empty-state i{font-size:34px;color:var(--muted);margin-bottom:16px;display:block;}
.empty-state h2{font-size:20px;color:#fff;margin-bottom:10px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{font-size:14px;color:var(--muted);margin-bottom:20px;}

/* ---------- tags / share / nav cards ---------- */
.article-tail{padding:40px 0 0;}
.tail-line{height:1px;background:var(--line);margin-bottom:26px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-row .label{font-size:13px;color:var(--muted);}
.tag-pill{
  padding:7px 14px;
  border-radius:999px;
  font-size:12.5px;
  color:var(--text-2);
  border:1px dashed var(--line-2);
  transition:all var(--t);
}
.tag-pill:hover{color:#fff;border-style:solid;border-color:rgba(44,107,255,.6);background:rgba(44,107,255,.18);}
.tail-actions{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:22px;}

.postnav{display:flex;gap:20px;margin-top:34px;}
.postnav-card{
  flex:1 1 0;
  min-width:0;
  display:block;
  padding:20px;
  border-radius:var(--r-card);
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  transition:all var(--t);
}
.postnav-card .k{font-size:12px;color:var(--muted);letter-spacing:.1em;display:flex;align-items:center;gap:6px;}
.postnav-card .v{display:block;margin-top:10px;font-size:15.5px;font-weight:600;color:var(--text);line-height:1.6;}
.postnav-card:hover{border-color:var(--line-2);transform:translateY(-2px);}
.postnav-card:hover .v{color:#fff;}
.postnav-card.next{text-align:right;}
.postnav-card.next .k{justify-content:flex-end;}

.related-block{padding:56px 0 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.sec-head h2{font-size:26px;color:#fff;}
.sec-head p{font-size:14px;color:var(--muted);margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.card:hover{border-color:var(--line-2);transform:translateY(-3px);box-shadow:0 14px 34px rgba(0,0,0,.45);}
.card-thumb{position:relative;overflow:hidden;background:var(--bg-3);}
.card-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .4s ease-out;}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,13,24,0) 45%,rgba(8,13,24,.72));
  pointer-events:none;
}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.card-body h3{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body p{
  margin-top:10px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  padding-top:16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--muted);
  border-top:1px solid var(--line);
  margin-top:16px;
}
.card:hover .card-body h3{color:#fff;}
.card-foot i{color:var(--primary-2);transition:transform var(--t);}
.card:hover .card-foot i{transform:translateX(4px);}

/* ---------- faq ---------- */
.faq-block{padding:56px 0 0;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border-radius:14px;
  background:var(--card);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:18px 54px 18px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  display:block;
  line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\2b";
  position:absolute;
  right:20px;top:50%;
  transform:translateY(-50%);
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:50%;
  font-size:16px;
  color:var(--primary-2);
  border:1px solid var(--line-2);
  transition:transform .25s ease,color var(--t),border-color var(--t);
}
.faq-item[open] summary::after{content:"\d7";transform:translateY(-50%) rotate(180deg);color:var(--cyan);border-color:rgba(23,224,176,.5);}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:transparent;
  transition:background var(--t),box-shadow var(--t);
}
.faq-item[open] summary::before,
.faq-item:hover summary::before{background:var(--primary);box-shadow:0 0 12px rgba(44,107,255,.85);}
.faq-item[open]{border-color:var(--line-2);background:rgba(19,31,51,.92);}
.faq-answer{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:var(--text-2);}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  margin-top:72px;
  padding:44px 40px;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:
    linear-gradient(120deg,rgba(8,13,24,.9),rgba(14,22,38,.82)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border:1px solid rgba(44,107,255,.34);
  box-shadow:0 0 0 1px rgba(44,107,255,.14),0 18px 44px rgba(0,0,0,.42);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
}
.cta-band h2{font-size:24px;color:#fff;}
.cta-band p{font-size:14px;color:var(--text-2);margin-top:10px;max-width:520px;}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;
  background:var(--bg-3);
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,rgba(44,107,255,.5),transparent) 1;
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:-160px;bottom:-200px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(44,107,255,.16),transparent 68%);
  pointer-events:none;
}
.footer-main{
  position:relative;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-top:60px;
  padding-bottom:44px;
}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.85;margin-top:16px;max-width:300px;}
.footer-share{display:flex;gap:10px;margin-top:20px;}
.footer-share a{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--text-2);
  transition:all var(--t);
}
.footer-share a:hover{color:#fff;border-color:rgba(44,107,255,.6);background:rgba(44,107,255,.18);transform:translateY(-2px);}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:var(--muted);font-weight:600;margin-bottom:16px;}
.footer-col ul li + li{margin-top:10px;}
.footer-col a{font-size:13.5px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary-2);}
.footer-col .info{font-size:13px;color:var(--muted);line-height:1.9;}
.footer-bottom{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  padding-top:20px;
  padding-bottom:26px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--muted);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);font-size:12.5px;}
.to-top:hover{color:var(--cyan);}

/* ---------- motion ---------- */
.fade-up{opacity:0;transform:translateY(14px);transition:opacity .45s ease-out,transform .45s ease-out;}
.fade-up.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media screen and (max-width:1180px){
  .mega-panel{width:min(860px,calc(100vw - 48px));grid-template-columns:1fr 1fr;gap:22px;}
  .mega-col:last-child{display:none;}
  .article-side{flex-basis:300px;width:300px;}
}
@media screen and (max-width:1023px){
  .container{padding-left:24px;padding-right:24px;}
  .main-nav{display:none;}
  .drawer-toggle{display:grid;place-items:center;}
  .article-layout{flex-direction:column;gap:32px;}
  .article-side{position:static;width:100%;flex:0 0 auto;top:auto;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-head h1{font-size:32px;}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px;}
}
@media screen and (max-width:768px){
  body{font-size:15.5px;}
  .container{padding-left:20px;padding-right:20px;}
  .header-inner{height:64px;gap:14px;}
  .brand-mark{width:32px;height:32px;font-size:16px;}
  .brand-text strong{font-size:15px;}
  .header-tools .btn{display:none;}
  .article-head{padding:18px 0 24px;}
  .article-head h1{font-size:26px;}
  .article-head-inner{flex-direction:column;gap:18px;}
  .meta-row{gap:12px;font-size:12.5px;}
  .entry-content{font-size:15.5px;line-height:1.85;}
  .entry-content h2{font-size:21px;}
  .entry-content h3{font-size:17.5px;}
  .article-section{padding-top:26px;}
  .postnav{flex-direction:column;gap:14px;}
  .postnav-card.next{text-align:left;}
  .postnav-card.next .k{justify-content:flex-start;}
  .card-grid{grid-template-columns:1fr;}
  .related-block,.faq-block{padding-top:44px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .sec-head h2{font-size:22px;}
  .faq-item summary{font-size:15.5px;padding:15px 48px 15px 18px;}
  .cta-band{margin-top:48px;padding:28px 22px;border-radius:16px;}
  .cta-band h2{font-size:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .site-footer{margin-top:56px;}
  .footer-main{grid-template-columns:1fr;gap:26px;padding-top:40px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .breadcrumb .cur{max-width:100%;white-space:normal;}
}
@media screen and (max-width:520px){
  .article-head h1{font-size:23px;}
  .share-group a{width:34px;height:34px;}
  .side-panel{padding:16px;}
  .card-body{padding:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .fade-up{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --bg:#080D18;
  --bg-2:#0E1626;
  --card:#131F33;
  --card-soft:rgba(19,31,51,.72);
  --primary:#2C6BFF;
  --primary-light:#5A8BFF;
  --accent:#FF6B2C;
  --cyan:#17E0B0;
  --text:#E8EEF9;
  --text-2:#C3D0E6;
  --muted:#98A8C4;
  --line:rgba(130,170,230,.16);
  --line-hover:rgba(130,170,230,.34);
  --glass:rgba(19,31,51,.62);
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(44,107,255,.45),0 10px 28px rgba(44,107,255,.30);
  --shadow-glow-hover:0 0 0 1px rgba(44,107,255,.55),0 14px 36px rgba(44,107,255,.42);
  --section-y:72px;
  --gap:24px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:var(--section-y) 0;}
.num{font-variant-numeric:tabular-nums;letter-spacing:-0.01em;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(8,13,24,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(145deg,var(--primary),#1A47B8);
  color:#fff;
  font-weight:800;
  font-size:18px;
  box-shadow:var(--shadow-glow);
  font-variant-numeric:tabular-nums;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:0;}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.06em;}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:8px;
  transition:color .18s ease-out,background .18s ease-out;
  white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(44,107,255,.10);}
.nav-link.is-active{color:#fff;font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(44,107,255,.9);
}
.nav-link i{font-size:10px;color:var(--muted);}
.mega-wrap{position:relative;}
.mega-panel{
  position:absolute;
  top:calc(100% + 14px);
  right:0;
  width:900px;
  display:grid;
  grid-template-columns:1.1fr 1.2fr .9fr;
  gap:24px;
  padding:24px;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:0 24px 60px rgba(0,0,0,.55);
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
  pointer-events:none;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;
}
.mega-col h4{
  font-size:12px;
  font-weight:700;
  color:var(--muted);
  letter-spacing:.12em;
  margin-bottom:14px;
}
.mega-cats{display:flex;flex-wrap:wrap;gap:8px;}
.mega-cats a{
  padding:6px 12px;
  font-size:13px;
  color:var(--text-2);
  border:1px dashed var(--line-hover);
  border-radius:var(--radius-pill);
  transition:.18s ease-out;
}
.mega-cats a:hover{
  color:#fff;
  background:var(--primary);
  border-color:transparent;
  border-style:solid;
  box-shadow:0 0 0 1px rgba(44,107,255,.45),0 8px 20px rgba(44,107,255,.32);
}
.mega-list li + li{margin-top:12px;padding-top:12px;border-top:1px solid var(--line);}
.mega-list a{
  display:block;
  font-size:14px;
  color:var(--text);
  line-height:1.5;
}
.mega-list a span{
  display:block;
  margin-top:4px;
  font-size:12px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.mega-list a:hover{color:var(--primary-light);}
.mega-card{
  display:block;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--card);
  border:1px solid var(--line);
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.mega-card:hover{border-color:var(--line-hover);transform:translateY(-2px);}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#0A1322;}
.mega-card .cap{display:block;padding:12px;font-size:12.5px;color:var(--muted);line-height:1.7;}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--text-2);
  transition:.18s ease-out;
}
.icon-btn:hover{color:#fff;border-color:var(--line-hover);background:rgba(44,107,255,.12);}
.nav-toggle{display:none;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 26px;
  font-size:14.5px;
  font-weight:600;
  border-radius:var(--radius-pill);
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  will-change:transform;
}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow-hover);background:#3B77FF;}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(44,107,255,.45),0 6px 16px rgba(44,107,255,.28);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border:1px solid var(--line-hover);
}
.btn-ghost:hover{transform:translateY(-1px);border-color:var(--cyan);color:#fff;box-shadow:0 8px 22px rgba(0,0,0,.35);}
.btn-ghost:active{transform:translateY(0);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary-light);
  font-size:14px;font-weight:600;
}
.btn-link i{transition:transform .18s ease-out;font-size:12px;}
.btn-link:hover{color:var(--cyan);}
.btn-link:hover i{transform:translateX(4px);}

/* ---------- Breadcrumb ---------- */
.crumb-bar{
  border-bottom:1px solid var(--line);
  background:var(--bg-2);
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  font-size:13px;
  color:var(--muted);
}
.crumb a:hover{color:var(--primary-light);}
.crumb .sep{color:rgba(152,168,196,.45);}
.crumb .now{color:var(--text-2);}

/* ---------- Page head ---------- */
.page-head{
  position:relative;
  overflow:hidden;
  padding:64px 0 56px;
  background:
    linear-gradient(102deg,rgba(8,13,24,.94) 0%,rgba(8,13,24,.78) 52%,rgba(8,13,24,.94) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  background-color:#0A1120;
}
.page-head::after{
  content:"";
  position:absolute;
  right:-120px;top:-140px;
  width:520px;height:520px;
  background:radial-gradient(circle,rgba(44,107,255,.30),rgba(44,107,255,0) 68%);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:2;}
.page-head h1{
  font-size:48px;
  font-weight:800;
  line-height:1.22;
  letter-spacing:0;
  max-width:840px;
}
.page-head h1 span{color:var(--primary-light);}
.page-head .lead{
  margin-top:16px;
  font-size:17px;
  color:var(--text-2);
  max-width:720px;
  line-height:1.85;
}
.stat-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.stat-pill{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:8px 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(19,31,51,.66);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  font-size:13px;
  color:var(--muted);
}
.stat-pill b{
  font-size:17px;
  font-weight:800;
  color:var(--text);
  font-variant-numeric:tabular-nums;
}
.stat-pill b.acc{color:var(--accent);}

/* ---------- Section heading ---------- */
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
}
.sec-head h2{
  font-size:32px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:0;
}
.sec-head .sub{
  margin-top:10px;
  font-size:14.5px;
  color:var(--muted);
  max-width:640px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--accent);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:var(--accent);
  border-radius:2px;
}

/* ---------- Media rows ---------- */
.media-row{
  display:flex;
  gap:var(--gap);
  align-items:center;
}
.media-row + .media-row{margin-top:56px;}
.media-cell-img{flex:0 0 41.6666%;max-width:41.6666%;}
.media-cell-text{flex:1 1 auto;}
.media-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:#0A1322;
}
.media-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .45s ease-out;
}
.media-figure:hover img{transform:scale(1.04);}
.media-figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(8,13,24,0) 42%,rgba(8,13,24,.72) 100%);
  pointer-events:none;
}
.media-tag{
  position:absolute;
  left:16px;
  bottom:16px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  font-size:11.5px;
  font-weight:600;
  border-radius:6px;
  color:#fff;
  background:rgba(255,107,44,.16);
  border:1px solid rgba(255,107,44,.55);
  backdrop-filter:blur(8px);
}
.media-text h3{
  font-size:24px;
  font-weight:700;
  line-height:1.45;
  margin-bottom:14px;
}
.media-text p{
  font-size:16px;
  color:var(--text-2);
  line-height:1.9;
  margin-bottom:14px;
}
.media-text p:last-of-type{margin-bottom:20px;}
.tick-list{display:flex;flex-direction:column;gap:10px;margin:0 0 22px;}
.tick-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
}
.tick-list li i{
  color:var(--cyan);
  font-size:12px;
  margin-top:7px;
  flex:0 0 auto;
}
@media screen and (min-width:1024px){
  .media-row--rev .media-cell-img{order:2;}
  .media-row--rev .media-cell-text{order:1;}
}

/* ---------- Entry list ---------- */
.entry-list{
  border-top:1px solid var(--line);
}
.entry-item{
  position:relative;
  display:flex;
  align-items:flex-start;
  gap:22px;
  padding:24px 20px 24px 18px;
  border-bottom:1px solid var(--line);
  transition:background .18s ease-out,padding-left .18s ease-out;
}
.entry-item::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:3px;height:0;
  border-radius:3px;
  background:var(--cyan);
  box-shadow:0 0 14px rgba(23,224,176,.85);
  transform:translateY(-50%);
  transition:height .22s ease-out;
}
.entry-item:hover{background:rgba(44,107,255,.08);padding-left:26px;}
.entry-item:hover::before{height:64%;}
.entry-num{
  flex:0 0 auto;
  width:52px;
  font-size:26px;
  font-weight:800;
  line-height:1.2;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:-0.02em;
}
.entry-body{flex:1 1 auto;min-width:0;}
.entry-body h3{
  font-size:20px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:6px;
  transition:color .18s ease-out;
}
.entry-item:hover .entry-body h3{color:var(--primary-light);}
.entry-body p{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
}
.entry-time{
  flex:0 0 auto;
  align-self:center;
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
  padding:4px 12px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  white-space:nowrap;
}
.entry-arrow{
  flex:0 0 auto;
  align-self:center;
  color:var(--muted);
  font-size:13px;
  transition:transform .18s ease-out,color .18s ease-out;
}
.entry-item:hover .entry-arrow{transform:translateX(4px);color:var(--cyan);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--card-soft);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:border-color .18s ease-out,background .18s ease-out;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--cyan);
  opacity:0;
  box-shadow:0 0 14px rgba(23,224,176,.8);
  transition:opacity .18s ease-out;
}
.faq-item[open]{border-color:var(--line-hover);background:rgba(19,31,51,.9);}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  font-size:17px;
  font-weight:600;
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  flex:0 0 auto;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-hover);
  color:var(--text-2);
  font-size:12px;
  transition:transform .22s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.faq-item[open] summary .plus{transform:rotate(180deg);color:var(--cyan);border-color:rgba(23,224,176,.6);}
.faq-body{
  padding:0 22px 22px 22px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  padding:44px;
  background:
    linear-gradient(100deg,rgba(11,18,32,.95),rgba(11,18,32,.72)),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  background-color:#0B1220;
  box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";
  position:absolute;
  left:-80px;bottom:-120px;
  width:360px;height:360px;
  background:radial-gradient(circle,rgba(44,107,255,.28),rgba(44,107,255,0) 70%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h3{font-size:26px;font-weight:700;line-height:1.4;}
.cta-inner p{margin-top:8px;font-size:14.5px;color:var(--muted);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;
  margin-top:var(--section-y);
  background:#060A12;
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,rgba(44,107,255,0),rgba(44,107,255,.75),rgba(23,224,176,.5),rgba(44,107,255,0)) 1;
}
.site-footer::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:420px;height:260px;
  background:radial-gradient(circle at 0% 100%,rgba(44,107,255,.16),rgba(44,107,255,0) 70%);
  pointer-events:none;
}
.footer-main{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding:64px 0 48px;
}
.footer-brand p{
  margin-top:16px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.85;
  max-width:280px;
}
.footer-share{display:flex;gap:10px;margin-top:20px;}
.footer-share a{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--muted);
  transition:.18s ease-out;
}
.footer-share a:hover{color:#fff;border-color:var(--line-hover);background:rgba(44,107,255,.16);transform:translateY(-2px);}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--text);
  margin-bottom:18px;
}
.footer-col ul li + li{margin-top:10px;}
.footer-col ul a{
  font-size:13.5px;
  color:var(--muted);
}
.footer-col ul a:hover{color:var(--primary-light);}
.footer-col .info{
  font-size:13.5px;
  color:var(--muted);
  line-height:1.85;
}
.footer-bottom{
  position:relative;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:rgba(152,168,196,.8);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--text-2);
  font-size:12.5px;
  transition:color .18s ease-out;
}
.to-top:hover{color:var(--cyan);}

/* ---------- Responsive ---------- */
@media screen and (max-width:1199px){
  .mega-panel{width:760px;grid-template-columns:1fr 1fr;}
  .mega-col:last-child{display:none;}
}
@media screen and (max-width:1023px){
  :root{--section-y:56px;}
  .container{padding-left:24px;padding-right:24px;}
  .nav-toggle{
    display:grid;
    place-items:center;
    width:40px;height:40px;
    border-radius:10px;
    border:1px solid var(--line);
    color:var(--text);
  }
  .main-nav{
    position:fixed;
    top:72px;right:0;
    width:min(340px,86vw);
    height:calc(100vh - 72px);
    overflow-y:auto;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    margin:0;
    padding:20px;
    background:rgba(9,15,27,.98);
    backdrop-filter:blur(16px);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .28s ease-out;
    z-index:130;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{padding:12px 10px;font-size:15px;}
  .nav-link.is-active::after{left:10px;right:auto;width:24px;}
  .mega-wrap{width:100%;}
  .mega-panel{
    position:static;
    width:100%;
    grid-template-columns:1fr;
    gap:20px;
    opacity:1;
    visibility:visible;
    transform:none;
    pointer-events:auto;
    margin-top:8px;
    padding:16px;
    box-shadow:none;
  }
  .mega-col:last-child{display:block;}
  .header-actions .btn{display:none;}
  .page-head{padding:48px 0 40px;}
  .page-head h1{font-size:34px;}
  .page-head .lead{font-size:15.5px;}
  .sec-head h2{font-size:26px;}
  .media-row{flex-direction:column;align-items:stretch;}
  .media-row + .media-row{margin-top:44px;}
  .media-cell-img{flex:1 1 auto;max-width:100%;}
  .media-text h3{font-size:21px;}
  .cta-band{padding:32px;}
  .cta-inner h3{font-size:22px;}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px;}
}
@media screen and (max-width:768px){
  :root{--section-y:44px;--gap:16px;}
  body{font-size:15.5px;}
  .container{padding-left:20px;padding-right:20px;}
  .page-head h1{font-size:30px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .sec-head h2{font-size:24px;}
  .entry-item{gap:14px;padding:20px 12px 20px 14px;}
  .entry-num{width:38px;font-size:20px;}
  .entry-body h3{font-size:17px;}
  .entry-time{display:none;}
  .entry-item:hover{padding-left:18px;}
  .faq-item summary{font-size:15.5px;padding:16px 16px;}
  .faq-body{padding:0 16px 18px;}
  .cta-band{padding:26px 20px;}
  .cta-inner{flex-direction:column;align-items:stretch;gap:22px;}
  .cta-actions .btn{width:100%;}
  .footer-main{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media screen and (max-width:520px){
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10px;}
  .page-head{padding:38px 0 32px;}
  .page-head h1{font-size:26px;}
  .stat-pill{font-size:12px;padding:6px 12px;}
  .stat-pill b{font-size:15px;}
  .media-text h3{font-size:19px;}
  .entry-num{font-size:18px;width:32px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category3 */
:root{
  --bg:#080D18;
  --surface:#0E1626;
  --card:#131F33;
  --primary:#2C6BFF;
  --primary-soft:rgba(44,107,255,.14);
  --accent:#FF6B2C;
  --cyan:#17E0B0;
  --text:#E8EFFA;
  --muted:#93A4BF;
  --line:rgba(130,170,230,.16);
  --line-strong:rgba(130,170,230,.34);
  --glass:rgba(19,31,51,.62);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-card:0 8px 24px rgba(0,0,0,.35);
  --sh-glow:0 0 0 1px rgba(44,107,255,.45),0 10px 28px rgba(44,107,255,.30);
  --sh-glow-hover:0 0 0 1px rgba(44,107,255,.55),0 14px 36px rgba(44,107,255,.42);
  --sp-section:72px;
  --t-fast:.18s ease-out;
  --t-mid:.25s ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{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",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;letter-spacing:0;line-height:1.35}
p{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
::selection{background:rgba(44,107,255,.4)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--sp-section) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:32px;font-weight:700}
.section-head .lead{color:var(--muted);font-size:15px;margin-top:8px}
.link-more{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:color var(--t-fast),gap var(--t-fast)}
.link-more:hover{color:#5C8DFF;gap:10px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:72px;
  background:rgba(8,13,24,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{height:72px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(145deg,var(--primary),#1A3FA8);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:var(--sh-glow);
  font-variant-numeric:tabular-nums;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;color:#C3D0E4;transition:color var(--t-fast),background var(--t-fast);
  white-space:nowrap;
}
.nav-link i{font-size:10px;opacity:.7;transition:transform var(--t-fast)}
.nav-link:hover{color:#fff;background:rgba(44,107,255,.12)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--cyan));
  box-shadow:0 0 10px rgba(44,107,255,.85);
}
.mega-wrap{position:relative}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;
  width:940px;max-width:calc(100vw - 64px);
  display:grid;grid-template-columns:1fr 1.15fr .95fr;gap:24px;
  padding:26px;
  background:rgba(14,22,38,.96);
  border:1px solid var(--line-strong);
  border-radius:var(--r-lg);
  box-shadow:0 24px 60px rgba(0,0,0,.6);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--t-fast),transform var(--t-fast),visibility var(--t-fast);
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-wrap:hover .nav-link i{transform:rotate(180deg)}
.mega-col h4{font-size:13px;letter-spacing:.12em;color:var(--muted);font-weight:600;margin-bottom:14px}
.mega-cats{display:flex;flex-wrap:wrap;gap:8px}
.mega-cats a{
  padding:7px 14px;border-radius:var(--r-pill);
  font-size:13px;border:1px solid var(--line);
  color:#C8D6EA;transition:all var(--t-fast);
}
.mega-cats a:hover{border-color:var(--primary);background:var(--primary-soft);color:#fff}
.mega-list li + li{margin-top:12px}
.mega-list a{display:block;font-size:14px;color:#D6E1F2;transition:color var(--t-fast)}
.mega-list a:hover{color:var(--primary)}
.mega-list span{display:block;font-size:12px;color:var(--muted);margin-top:4px;font-variant-numeric:tabular-nums}
.mega-card{display:block;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--card);transition:border-color var(--t-fast),transform var(--t-fast)}
.mega-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#0A1220}
.mega-card .cap{display:block;padding:12px 14px;font-size:13px;color:var(--muted);line-height:1.7}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);color:#C3D0E4;
  transition:all var(--t-fast);
}
.icon-btn:hover{border-color:var(--line-strong);color:#fff;background:rgba(44,107,255,.14)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  transition:transform var(--t-fast),box-shadow var(--t-fast),background var(--t-fast),border-color var(--t-fast),color var(--t-fast);
}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-glow)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-glow-hover);background:#3A76FF}
.btn-primary:active{transform:none;box-shadow:0 0 0 1px rgba(44,107,255,.4),0 4px 14px rgba(44,107,255,.25)}
.btn-ghost{border:1px solid var(--line-strong);color:#E3ECF9;background:transparent}
.btn-ghost:hover{border-color:var(--primary);color:#fff;background:rgba(44,107,255,.12);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-text{color:var(--primary);padding:13px 4px;font-weight:600}
.btn-text:hover{color:#6E9BFF;gap:12px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);place-items:center}

/* ---------- breadcrumb ---------- */
.crumb{
  padding:22px 0 0;
  font-size:13px;color:var(--muted);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.crumb a{color:var(--muted);transition:color var(--t-fast)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.45}
.crumb .now{color:#C8D6EA}

/* ---------- page head ---------- */
.page-head{padding:32px 0 48px;display:flex;align-items:flex-end;justify-content:space-between;gap:40px;flex-wrap:wrap;border-bottom:1px solid var(--line)}
.page-head-main{max-width:680px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--cyan);
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(23,224,176,.32);background:rgba(23,224,176,.08);
  margin-bottom:18px;
}
.page-head h1{font-size:44px;font-weight:800;line-height:1.25}
.page-head h1 span{color:var(--primary)}
.page-head .lead{margin-top:16px;font-size:16px;color:var(--muted)}
.stat-pills{display:flex;gap:12px;flex-wrap:wrap}
.stat-pill{
  min-width:118px;padding:14px 20px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.stat-pill strong{display:block;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;color:#fff}
.stat-pill span{font-size:12px;color:var(--muted)}

/* ---------- 目录列表 ---------- */
.dir-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;border-top:1px solid var(--line)}
.dir-item{
  position:relative;display:flex;gap:18px;align-items:flex-start;
  padding:22px 16px 22px 22px;border-bottom:1px solid var(--line);
  transition:background var(--t-fast);
}
.dir-item::before{
  content:"";position:absolute;left:0;top:50%;
  width:3px;height:64%;border-radius:3px;
  transform:translateY(-50%) scaleY(0);
  background:linear-gradient(180deg,var(--primary),var(--cyan));
  box-shadow:0 0 14px rgba(44,107,255,.85);
  transition:transform var(--t-fast);
}
.dir-item:hover{background:rgba(44,107,255,.07)}
.dir-item:hover::before{transform:translateY(-50%) scaleY(1)}
.dir-num{
  flex:0 0 46px;font-size:20px;font-weight:800;
  color:var(--accent);font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum";line-height:1.5;
}
.dir-body{flex:1;min-width:0}
.dir-body h3{font-size:17px;font-weight:600;line-height:1.55;transition:color var(--t-fast)}
.dir-item:hover .dir-body h3{color:#fff}
.dir-body p{font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.75}
.dir-time{
  flex:0 0 auto;font-size:13px;color:var(--muted);
  font-variant-numeric:tabular-nums;padding-top:4px;white-space:nowrap;
}
.dir-time i{margin-right:6px;color:var(--accent);font-size:11px}

/* ---------- 全宽大图 ---------- */
.feature-wide{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  background:#0A1220;
}
.feature-wide img{width:100%;height:420px;object-fit:cover;opacity:.62;transition:transform .6s ease-out}
.feature-wide:hover img{transform:scale(1.03)}
.feature-wide .mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(8,13,24,.94) 0%,rgba(8,13,24,.72) 46%,rgba(8,13,24,.28) 100%);
  display:flex;flex-direction:column;justify-content:center;
  padding:0 56px;gap:16px;max-width:640px;
}
.feature-wide h2{font-size:30px;font-weight:800;line-height:1.35}
.feature-wide p{font-size:15px;color:#B9C8DE;max-width:440px}
.feature-wide .badge-row{display:flex;gap:10px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:6px;font-size:12px;font-weight:600;
  color:#BBD0F5;background:rgba(44,107,255,.16);
  border:1px solid rgba(44,107,255,.4);
}
.badge-accent{color:#FFC7AC;background:rgba(255,107,44,.14);border-color:rgba(255,107,44,.42)}

/* ---------- 标签墙 ---------- */
.tag-wall{display:flex;flex-wrap:wrap;gap:14px}
.tag-pill{
  padding:11px 24px;border-radius:var(--r-pill);
  font-size:14px;color:#C8D6EA;
  border:1px dashed rgba(130,170,230,.42);
  transition:all var(--t-fast);
}
.tag-pill:hover{
  border-style:solid;border-color:var(--primary);
  background:var(--primary);color:#fff;
  box-shadow:var(--sh-glow);transform:translateY(-1px);
}
.tag-pill:active{transform:none}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{
  position:relative;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color var(--t-fast),background var(--t-fast);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--primary),var(--cyan));
  box-shadow:0 0 14px rgba(44,107,255,.8);
  transform:scaleY(0);transform-origin:top;transition:transform var(--t-mid);
}
.faq-item[open]{border-color:var(--line-strong);background:rgba(19,31,51,.82)}
.faq-item[open]::before{transform:scaleY(1)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:11px;
  border:1px solid var(--line-strong);color:var(--primary);
  transition:transform var(--t-mid),background var(--t-fast),color var(--t-fast);
}
.faq-item[open] summary i{transform:rotate(180deg);background:var(--primary);color:#fff;border-color:var(--primary)}
.faq-body{padding:0 24px 22px 24px;font-size:15px;color:var(--muted);line-height:1.9}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line-strong);
  padding:52px 56px;
  background:#0B1322 url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,13,24,.94) 0%,rgba(8,13,24,.82) 52%,rgba(11,19,34,.66) 100%);
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:28px;font-weight:800}
.cta-band p{color:#B9C8DE;font-size:15px;margin-top:10px;max-width:520px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.share-group{display:flex;gap:8px;margin-left:6px}
.share-group a{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;font-size:14px;color:#C3D0E4;
  border:1px solid var(--line);transition:all var(--t-fast);
}
.share-group a:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(23,224,176,.1)}

/* ---------- footer ---------- */
.site-footer{
  margin-top:80px;
  background:#060A12;
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,rgba(44,107,255,0),rgba(44,107,255,.6),rgba(23,224,176,.4),rgba(44,107,255,0)) 1;
  position:relative;overflow:hidden;
}
.site-footer::after{
  content:"";position:absolute;left:-140px;bottom:-180px;width:460px;height:460px;
  background:radial-gradient(circle,rgba(44,107,255,.16),transparent 68%);
  pointer-events:none;
}
.footer-main{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 32px 44px;position:relative;z-index:1;
}
.footer-brand p{font-size:13.5px;color:var(--muted);margin-top:16px;max-width:280px;line-height:1.8}
.footer-share{display:flex;gap:10px;margin-top:20px}
.footer-share a{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:#B9C8DE;font-size:14px;transition:all var(--t-fast);
}
.footer-share a:hover{border-color:var(--primary);color:#fff;background:rgba(44,107,255,.16);transform:translateY(-1px)}
.footer-col h4{font-size:14px;font-weight:700;color:#DCE7F7;margin-bottom:16px}
.footer-col ul li + li{margin-top:10px}
.footer-col a{font-size:13.5px;color:var(--muted);transition:color var(--t-fast)}
.footer-col a:hover{color:var(--primary)}
.footer-col .info{font-size:13px;color:var(--muted);line-height:1.9}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:20px 32px 30px;border-top:1px solid rgba(130,170,230,.1);
  font-size:12.5px;color:#6F8099;position:relative;z-index:1;
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;color:#9FB0C8;
  padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  transition:all var(--t-fast);
}
.to-top:hover{color:#fff;border-color:var(--primary);background:rgba(44,107,255,.14)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .45s ease-out,transform .45s ease-out}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .mega-panel{width:760px;grid-template-columns:1fr 1fr}
  .mega-panel .mega-col:last-child{display:none}
  .page-head h1{font-size:36px}
  .footer-main{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-main .footer-col:last-child{grid-column:span 3}
}
@media (max-width:900px){
  .main-nav{
    position:fixed;top:72px;right:0;bottom:0;width:min(320px,86vw);
    flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:20px;
    background:#0A1220;border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform var(--t-mid);
    overflow-y:auto;z-index:70;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{padding:14px 16px;font-size:16px;justify-content:space-between}
  .nav-link.is-active::after{left:16px;right:auto;width:26px}
  .mega-wrap{display:none}
  .nav-toggle{display:grid}
  .dir-list{grid-template-columns:1fr;gap:0}
  .feature-wide img{height:360px}
  .feature-wide .mask{padding:0 32px;max-width:100%}
  .cta-band{padding:40px 32px}
}
@media (max-width:768px){
  :root{--sp-section:40px}
  .container{padding:0 20px}
  .header-inner{gap:12px}
  .btn-sm.desk-cta{display:none}
  .page-head{padding:24px 0 32px;gap:24px}
  .page-head h1{font-size:30px}
  .page-head .lead{font-size:15px}
  .stat-pill{min-width:auto;padding:10px 16px}
  .stat-pill strong{font-size:20px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .section-head h2{font-size:24px}
  .dir-item{padding:18px 12px 18px 18px;gap:12px;flex-wrap:wrap}
  .dir-num{flex:0 0 38px;font-size:17px}
  .dir-time{width:100%;padding-left:50px;padding-top:0}
  .feature-wide img{height:300px}
  .feature-wide .mask{padding:0 24px;gap:12px}
  .feature-wide h2{font-size:22px}
  .feature-wide p{font-size:14px}
  .cta-band{padding:32px 24px;gap:24px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .share-group{margin-left:0;width:100%;justify-content:flex-start}
  .footer-main{grid-template-columns:1fr;gap:32px;padding:48px 20px 32px}
  .footer-main .footer-col:last-child{grid-column:auto}
  .footer-bottom{padding:20px 20px 32px;font-size:12px}
  .tag-pill{padding:9px 18px;font-size:13px}
  .faq-item summary{font-size:15.5px;padding:16px 18px}
  .faq-body{padding:0 18px 18px}
}
@media (max-width:520px){
  .brand-text em{display:none}
  .page-head h1{font-size:26px}
  .feature-wide img{height:260px}
  .deep-stat{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg:#080D18;
  --bg-2:#0E1626;
  --card:#131F33;
  --primary:#2C6BFF;
  --primary-soft:rgba(44,107,255,.14);
  --accent:#FF6B2C;
  --cyan:#17E0B0;
  --text:#E8EEF9;
  --muted:#93A4C0;
  --line:rgba(130,170,230,.16);
  --line-strong:rgba(130,170,230,.34);
  --glass:rgba(19,31,51,.62);
  --glow-btn:0 0 0 1px rgba(44,107,255,.45), 0 10px 28px rgba(44,107,255,.30);
  --glow-btn-hover:0 0 0 1px rgba(44,107,255,.55), 0 14px 36px rgba(44,107,255,.42);
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-deep:0 18px 46px rgba(0,0,0,.45);
  --r-card:16px;
  --r-block:20px;
  --r-badge:6px;
  --r-input:10px;
  --sp-block:72px;
  --sp-block-sm:40px;
  --ease:.18s ease-out;
}
*{box-sizing:border-box}
html{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,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 82% -8%, rgba(44,107,255,.20), transparent 62%),
    radial-gradient(700px 420px at 4% 18%, rgba(23,224,176,.07), transparent 60%);
  pointer-events:none;
  z-index:0;
}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease)}
a:hover{color:var(--cyan)}
img{display:block;max-width:100%;height:auto}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus{outline:none}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
  position:relative;
  z-index:1;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(8,13,24,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;height:36px;
  border-radius:10px;
  display:grid;place-items:center;
  font-size:19px;font-weight:800;
  color:#fff;
  background:linear-gradient(140deg,#2C6BFF,#1B45B8);
  box-shadow:var(--glow-btn);
  font-variant-numeric:tabular-nums;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:0}
.brand-text em{font-size:11px;font-style:normal;color:var(--muted);letter-spacing:.06em}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 12px;
  font-size:14.5px;
  color:#C6D2E6;
  border-radius:999px;
  background:transparent;
  border:0;
  cursor:pointer;
  white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(44,107,255,.12)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:-2px;
  height:2px;border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(44,107,255,.9);
}
.nav-link i{font-size:10px;opacity:.7;transition:transform var(--ease)}
.mega-wrap{position:relative}
.mega-wrap:hover .nav-link i,
.mega-wrap:focus-within .nav-link i{transform:rotate(180deg)}
.mega-panel{
  position:absolute;
  right:0;
  top:calc(100% + 14px);
  width:940px;
  max-width:calc(100vw - 64px);
  display:grid;
  grid-template-columns:1fr 1.15fr .9fr;
  gap:26px;
  padding:26px;
  border-radius:var(--r-block);
  background:rgba(14,22,38,.96);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(150,190,255,.18);
  box-shadow:var(--shadow-deep);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);
  transition-delay:.12s;
}
.mega-col h4{
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--muted);
  margin-bottom:14px;
}
.mega-cats{display:flex;flex-wrap:wrap;gap:8px}
.mega-cats a{
  display:inline-block;
  padding:7px 14px;
  font-size:13px;
  border-radius:999px;
  border:1px solid var(--line);
  color:#D3DDEE;
  background:rgba(44,107,255,.07);
}
.mega-cats a:hover{
  border-color:var(--line-strong);
  background:var(--primary-soft);
  color:#fff;
}
.mega-list li{border-bottom:1px dashed rgba(130,170,230,.14)}
.mega-list li:last-child{border-bottom:0}
.mega-list a{
  display:block;
  padding:10px 0;
  font-size:13.5px;
  color:#DCE5F4;
  line-height:1.55;
}
.mega-list a span{
  display:block;
  font-size:11.5px;
  color:var(--muted);
  margin-top:4px;
  font-variant-numeric:tabular-nums;
}
.mega-list a:hover{color:var(--cyan)}
.mega-card{
  display:block;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--card);
}
.mega-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  background:linear-gradient(140deg,#15243B,#0E1626);
}
.mega-card .cap{
  display:block;
  padding:12px 14px;
  font-size:12.5px;
  line-height:1.6;
  color:var(--muted);
}
.mega-card:hover .cap{color:#fff}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(19,31,51,.5);
  color:#C6D2E6;
  cursor:pointer;
  transition:all var(--ease);
}
.icon-btn:hover{color:#fff;border-color:var(--line-strong);background:rgba(44,107,255,.18)}
.nav-toggle{display:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  font-size:14.5px;
  font-weight:600;
  border-radius:999px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(140deg,#3475FF,#1F55D8);
  color:#fff;
  box-shadow:var(--glow-btn);
}
.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:var(--glow-btn-hover);
  color:#fff;
  filter:brightness(1.08);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(44,107,255,.5),0 6px 16px rgba(44,107,255,.28)}
.btn-outline{
  background:transparent;
  border-color:var(--line-strong);
  color:#E4ECF9;
}
.btn-outline:hover{
  border-color:var(--cyan);
  color:#fff;
  background:rgba(23,224,176,.10);
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;
  border:0;
  color:#C6D2E6;
  padding:10px 4px;
  font-weight:600;
}
.btn-ghost i{transition:transform var(--ease)}
.btn-ghost:hover{color:var(--cyan)}
.btn-ghost:hover i{transform:translateX(4px)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.btn-block{width:100%}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:22px 0 0;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{opacity:.45}
.breadcrumb .cur{color:#D7E1F1}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;
  margin-top:18px;
  padding:52px 0 56px;
  border-radius:var(--r-block);
  overflow:hidden;
  background:
    linear-gradient(120deg,rgba(8,13,24,.94) 12%,rgba(8,13,24,.72) 58%,rgba(10,20,40,.86) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat,
    #0B1424;
  border:1px solid var(--line);
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-120px;top:-140px;
  width:520px;height:520px;
  background:radial-gradient(circle,rgba(44,107,255,.32),transparent 68%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--cyan);
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(23,224,176,.32);
  background:rgba(23,224,176,.08);
  margin-bottom:20px;
}
.hero-title{
  font-size:48px;
  line-height:1.24;
  font-weight:800;
  letter-spacing:0;
  margin-bottom:18px;
}
.hero-title .hl{
  background:linear-gradient(100deg,#4C87FF,#17E0B0);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  font-size:16.5px;
  line-height:1.95;
  color:#B9C7DE;
  max-width:640px;
  margin-bottom:26px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:28px;
}
.stat-pill{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:9px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(19,31,51,.6);
  font-size:12.5px;
  color:var(--muted);
}
.stat-pill b{
  font-size:16px;
  color:#fff;
  font-weight:800;
  font-variant-numeric:tabular-nums;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-figure{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid rgba(150,190,255,.18);
  background:rgba(19,31,51,.66);
  box-shadow:var(--shadow-deep);
  transform:rotate(-.6deg);
}
.hero-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  background:linear-gradient(140deg,#16263F,#0B1424);
}
.hero-figure .fig-cap{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:16px 18px;
  background:linear-gradient(to top,rgba(6,11,20,.94),rgba(6,11,20,0));
  font-size:13px;
  color:#C9D5E8;
}
.float-badge{
  position:absolute;
  right:-12px;bottom:-12px;
  padding:9px 16px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:700;
  color:#0A101C;
  background:linear-gradient(120deg,#17E0B0,#5BF3CE);
  box-shadow:0 10px 26px rgba(23,224,176,.32);
}

/* ============ 板块通用 ============ */
.section{padding:var(--sp-block) 0 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
}
.section-head h2{
  font-size:32px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:0;
}
.section-head .sub{
  margin-top:10px;
  font-size:14.5px;
  color:var(--muted);
  max-width:660px;
}
.section-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:#CED9EB;
  white-space:nowrap;
}
.section-link i{font-size:11px;transition:transform var(--ease)}
.section-link:hover{color:var(--cyan)}
.section-link:hover i{transform:translateX(4px)}

/* ============ 时间线 ============ */
.timeline{
  position:relative;
  padding-left:34px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;top:8px;bottom:8px;
  width:2px;
  background:linear-gradient(to bottom,rgba(44,107,255,.75),rgba(23,224,176,.35),rgba(130,170,230,.10));
  border-radius:2px;
}
.tl-item{
  position:relative;
  padding:0 0 30px 0;
}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:-31px;top:9px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(44,107,255,.14);
  transition:all var(--ease);
}
.tl-item:hover::before{
  border-color:var(--cyan);
  box-shadow:0 0 0 6px rgba(23,224,176,.16),0 0 16px rgba(23,224,176,.55);
}
.tl-card{
  padding:20px 24px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.tl-item:hover .tl-card{
  border-color:var(--line-strong);
  transform:translateY(-2px);
  background:rgba(23,38,62,.72);
}
.tl-top{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:8px;
}
.tl-step{
  font-size:12px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.tl-card h3{
  font-size:20px;
  font-weight:600;
  line-height:1.45;
}
.tl-card p{
  font-size:14.5px;
  color:#A9B8D0;
  line-height:1.85;
}
.tl-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:12px;
}
.tag{
  display:inline-block;
  padding:4px 12px;
  font-size:12px;
  border-radius:999px;
  border:1px dashed rgba(130,170,230,.34);
  color:#B7C6DD;
  transition:all var(--ease);
}
.tag:hover{
  border-style:solid;
  border-color:var(--primary);
  background:var(--primary-soft);
  color:#fff;
}

/* ============ 数据卡片 2×2 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.d-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--card);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.d-card:hover{
  transform:translateY(-3px);
  border-color:var(--line-strong);
  box-shadow:0 14px 34px rgba(0,0,0,.46);
}
.d-card-media{
  position:relative;
  overflow:hidden;
}
.d-card-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  background:linear-gradient(140deg,#16263F,#0B1424);
  transition:transform .35s ease-out;
}
.d-card:hover .d-card-media img{transform:scale(1.04)}
.d-card-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(8,13,24,.72),rgba(8,13,24,0) 62%);
}
.badge{
  display:inline-block;
  padding:4px 11px;
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.02em;
  border-radius:var(--r-badge);
  color:#9FC0FF;
  background:rgba(44,107,255,.14);
  border:1px solid rgba(44,107,255,.42);
}
.badge-accent{
  color:#FFC7A8;
  background:rgba(255,107,44,.14);
  border-color:rgba(255,107,44,.42);
}
.d-card-media .badge{
  position:absolute;
  left:16px;top:16px;
  z-index:2;
  backdrop-filter:blur(6px);
}
.d-card-body{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.d-card-body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:10px;
}
.d-card-body p{
  font-size:14px;
  line-height:1.85;
  color:#A9B8D0;
  margin-bottom:18px;
}
.d-card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid rgba(130,170,230,.14);
  font-size:12.5px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.d-card-foot i{font-size:11px;transition:transform var(--ease)}
.d-card:hover .d-card-foot i{transform:translateX(4px);color:var(--cyan)}

/* ============ CTA 条带 ============ */
.cta-band{
  position:relative;
  margin-top:var(--sp-block);
  padding:44px 46px;
  border-radius:var(--r-block);
  overflow:hidden;
  border:1px solid rgba(150,190,255,.2);
  background:
    linear-gradient(115deg,rgba(11,20,36,.94),rgba(17,32,56,.82)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat,
    #101B2E;
  box-shadow:var(--shadow-deep);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;top:-110px;
  width:400px;height:400px;
  background:radial-gradient(circle,rgba(44,107,255,.34),transparent 66%);
  pointer-events:none;
}
.cta-grid{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-copy h2{
  font-size:26px;
  font-weight:700;
  line-height:1.4;
  margin-bottom:8px;
}
.cta-copy p{
  font-size:14px;
  color:#AEBDD4;
  max-width:520px;
}
.cta-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.share-group{
  display:flex;
  align-items:center;
  gap:8px;
  padding-left:12px;
  margin-left:4px;
  border-left:1px solid rgba(130,170,230,.22);
}
.share-group a{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:#C6D2E6;
  background:rgba(19,31,51,.6);
  transition:all var(--ease);
}
.share-group a:hover{
  color:#fff;
  border-color:var(--cyan);
  background:rgba(23,224,176,.14);
  transform:translateY(-2px);
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
  position:relative;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:linear-gradient(to bottom,var(--primary),var(--cyan));
  opacity:0;
  transition:opacity var(--ease);
}
.faq-item[open]{border-color:var(--line-strong);background:rgba(23,38,62,.7)}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  font-size:17px;
  font-weight:600;
  cursor:pointer;
  list-style:none;
  color:#E4ECF9;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:#fff}
.faq-icon{
  flex-shrink:0;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:#9FB6DA;
  font-size:12px;
  transition:transform .25s ease-out,color var(--ease),border-color var(--ease);
}
.faq-item[open] .faq-icon{
  transform:rotate(180deg);
  color:var(--cyan);
  border-color:rgba(23,224,176,.6);
}
.faq-body{
  padding:0 24px 22px;
  font-size:14.5px;
  line-height:1.95;
  color:#AEBDD4;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--sp-block);
  background:#05080F;
  border-top:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:-140px;bottom:-180px;
  width:460px;height:460px;
  background:radial-gradient(circle,rgba(44,107,255,.16),transparent 68%);
  pointer-events:none;
}
.site-footer::after{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(44,107,255,.7),rgba(23,224,176,.5),transparent);
}
.footer-main{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-top:60px;
  padding-bottom:48px;
  position:relative;
  z-index:1;
}
.footer-brand p{
  font-size:13.5px;
  color:var(--muted);
  line-height:1.85;
  margin:16px 0 20px;
  max-width:260px;
}
.footer-share{display:flex;gap:10px}
.footer-share a{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:#B7C6DD;
  background:rgba(19,31,51,.55);
  transition:all var(--ease);
}
.footer-share a:hover{
  color:#fff;border-color:var(--cyan);
  background:rgba(23,224,176,.14);
  transform:translateY(-2px);
}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  color:#D7E1F1;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li a{
  font-size:13.5px;
  color:var(--muted);
}
.footer-col li a:hover{color:var(--cyan)}
.footer-col .info{
  font-size:13px;
  color:var(--muted);
  line-height:1.9;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding-top:20px;
  padding-bottom:26px;
  border-top:1px solid rgba(130,170,230,.12);
  font-size:12.5px;
  color:#6F819C;
  position:relative;
  z-index:1;
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:#B7C6DD;
  padding:7px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  transition:all var(--ease);
}
.to-top:hover{color:#fff;border-color:var(--line-strong);background:rgba(44,107,255,.14)}
.to-top i{font-size:11px}

/* ============ 移动端抽屉 ============ */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(4,8,15,.7);
  backdrop-filter:blur(3px);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease-out,visibility .25s;
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  width:min(340px,86vw);
  height:100%;
  background:#0A1220;
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .28s ease-out;
  z-index:80;
  padding:22px 22px 32px;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:22px;
}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:22px}
.drawer-links a{
  padding:12px 14px;
  border-radius:10px;
  font-size:15px;
  color:#D3DDEE;
  border:1px solid transparent;
}
.drawer-links a:hover{background:rgba(44,107,255,.12);color:#fff}
.drawer-links a.is-active{
  background:rgba(44,107,255,.16);
  border-color:rgba(44,107,255,.42);
  color:#fff;
  font-weight:600;
}
.drawer-note{
  font-size:12.5px;
  color:var(--muted);
  line-height:1.9;
  padding-top:16px;
  border-top:1px solid rgba(130,170,230,.14);
  margin-bottom:18px;
}

/* ============ 响应式 ============ */
@media (max-width:1440px){
  .hero-title{font-size:44px}
}
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:grid}
  .hero-title{font-size:38px}
  .section-head h2{font-size:28px}
  .footer-main{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1/-1}
  .cta-band{padding:36px 32px}
  .mega-panel{display:none}
}
@media (max-width:768px){
  .container{padding-left:20px;padding-right:20px}
  :root{--sp-block:48px;--sp-block-sm:32px}
  .header-inner{height:64px;gap:14px}
  .brand-mark{width:32px;height:32px;font-size:16px}
  .brand-text strong{font-size:14.5px}
  .brand-text em{font-size:10px}
  .header-actions .btn-primary{display:none}
  .page-hero{padding:34px 0 38px;margin-top:14px}
  .hero-title{font-size:30px;line-height:1.32}
  .hero-lead{font-size:15px}
  .hero-figure{transform:none;margin-top:26px}
  .float-badge{right:8px;bottom:8px}
  .card-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2{font-size:24px}
  .cta-band{padding:28px 22px;margin-top:var(--sp-block)}
  .cta-copy h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .share-group{padding-left:0;margin-left:0;border-left:0;padding-top:6px}
  .timeline{padding-left:26px}
  .timeline::before{left:7px}
  .tl-item::before{left:-23px}
  .tl-card{padding:16px 18px}
  .tl-card h3{font-size:17px}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px;padding-top:44px;padding-bottom:36px}
  .footer-brand{grid-column:1/-1}
  .footer-col:last-child{grid-column:1/-1}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-body{padding:0 18px 18px;font-size:14px}
  .footer-bottom{font-size:12px}
}
@media (max-width:520px){
  .hero-title{font-size:26px}
  .hero-cta .btn{width:100%}
  .stat-pill{font-size:11.5px;padding:8px 12px}
  .stat-pill b{font-size:14px}
  .footer-main{grid-template-columns:1fr}
  .d-card-body{padding:18px}
  .breadcrumb{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}