/* roulang page: index */
:root{
  --bg-dark:#080d18;
  --bg-deep:#0c1220;
  --bg-soft:#101a2c;
  --bg-card:#121d31;
  --bg-card-2:#0f1926;
  --text-main:#eaf0ff;
  --text-soft:#a7b6d4;
  --text-mute:#7183a6;
  --line:rgba(94,125,177,.22);
  --line-glow:rgba(34,211,238,.35);
  --primary:#22d3ee;
  --secondary:#a78bfa;
  --accent:#f472b6;
  --success:#34d399;
  --warning:#fbbf24;
  --danger:#f87171;
  --grad-main:linear-gradient(135deg,#22d3ee 0%,#818cf8 50%,#e879f9 100%);
  --grad-card:linear-gradient(145deg,rgba(34,211,238,.08),rgba(129,140,248,.04));
  --radius-lg:26px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-md:0 14px 40px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(34,211,238,.22),0 18px 50px rgba(34,211,238,.10);
  --font-main:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-main);
  background:var(--bg-dark);
  color:var(--text-main);
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(circle at 15% 10%,rgba(34,211,238,.12),transparent 38%),
    radial-gradient(circle at 85% 20%,rgba(168,139,250,.10),transparent 36%),
    radial-gradient(circle at 65% 80%,rgba(244,114,182,.07),transparent 32%),
    var(--bg-dark);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:42px 42px;
  mask-image:radial-gradient(ellipse at center,rgba(0,0,0,.6),transparent 75%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button,input{font-family:inherit}
::selection{background:rgba(34,211,238,.26);color:#fff}
h1,h2,h3,h4,h5,h6{font-weight:800;letter-spacing:-.02em;line-height:1.25}
.container{max-width:1240px}
.section-pad{padding:104px 0}
.section-line{border-bottom:1px solid rgba(94,125,177,.10)}
.bg-glow{background:var(--bg-soft)}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1050;
  background:rgba(8,13,24,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  box-shadow:0 8px 32px rgba(0,0,0,.28);
}
.navbar{
  padding:14px 0;
}
.brand-logo{
  font-size:1.2rem;
  font-weight:800;
  background:linear-gradient(120deg,#fff 20%,#22d3ee 60%,#a78bfa 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  letter-spacing:-.01em;
  white-space:nowrap;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.brand-logo i{
  font-size:1.35rem;
  -webkit-text-fill-color:var(--primary);
  filter:drop-shadow(0 0 8px rgba(34,211,238,.45));
}
.navbar-brand{padding:0}
.navbar-toggler{
  border:1px solid rgba(34,211,238,.35);
  border-radius:10px;
  color:var(--primary);
  padding:6px 10px;
  box-shadow:none !important;
  background:rgba(34,211,238,.06);
}
.navbar-toggler:focus{
  box-shadow:0 0 0 4px rgba(34,211,238,.14) !important;
}
.main-nav .nav-link{
  color:var(--text-soft);
  font-weight:600;
  font-size:.92rem;
  padding:8px 14px !important;
  border-radius:10px;
  position:relative;
  transition:color .25s ease,background .25s ease,box-shadow .25s ease;
}
.main-nav .nav-link i{
  margin-right:6px;
  font-size:.88rem;
  opacity:.8;
}
.main-nav .nav-link:hover{
  color:#fff;
  background:rgba(34,211,238,.08);
  box-shadow:inset 0 0 0 1px rgba(34,211,238,.16);
}
.main-nav .nav-link.active{
  color:#fff;
  background:linear-gradient(135deg,rgba(34,211,238,.14),rgba(129,140,248,.10));
  box-shadow:inset 0 0 0 1px rgba(34,211,238,.28);
}
.main-nav .nav-link.active::before{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:3px;
  height:3px;
  border-radius:3px;
  background:var(--grad-main);
  box-shadow:0 0 12px rgba(34,211,238,.6);
}
.nav-cta{
  background:var(--grad-main);
  color:#06121a !important;
  border-radius:12px;
  font-weight:700;
  padding:8px 20px !important;
  box-shadow:0 8px 24px rgba(34,211,238,.22);
  transition:transform .25s ease,box-shadow .25s ease;
}
.nav-cta:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 30px rgba(34,211,238,.32);
}
.nav-cta i{
  color:#06121a;
}
.nav-search{
  display:flex;
  align-items:center;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);
  border-radius:30px;
  padding:3px 4px 3px 14px;
  min-width:200px;
}
.nav-search input{
  background:transparent;
  border:0;
  outline:none;
  color:#fff;
  font-size:.85rem;
  width:100%;
}
.nav-search input::placeholder{color:rgba(255,255,255,.4)}
.nav-search button{
  border:0;
  background:var(--grad-main);
  color:#06121a;
  width:32px;height:32px;
  border-radius:50%;
  flex:0 0 32px;
}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:92vh;
  display:flex;
  align-items:center;
  padding:70px 0 90px;
  overflow:hidden;
  background:
    linear-gradient(180deg,rgba(8,13,24,.72) 20%,rgba(8,13,24,.88)),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(circle at 78% 20%,rgba(34,211,238,.20),transparent 48%),
             radial-gradient(circle at 12% 72%,rgba(168,139,250,.12),transparent 42%);
}
.hero-text{
  position:relative;
  z-index:2;
  max-width:760px;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(34,211,238,.10);
  border:1px solid rgba(34,211,238,.28);
  border-radius:30px;
  padding:6px 16px;
  font-size:.82rem;
  color:#bff6ff;
  letter-spacing:.08em;
  margin-bottom:22px;
  box-shadow:0 0 20px rgba(34,211,238,.08);
}
.hero-title{
  font-size:clamp(2.3rem,5vw,4.2rem);
  font-weight:900;
  line-height:1.14;
  letter-spacing:-.03em;
}
.hero-title-gradient{
  display:block;
  background:var(--grad-main);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  padding-bottom:2px;
}
.hero-sub{
  margin-top:24px;
  font-size:1.1rem;
  color:var(--text-soft);
  max-width:620px;
}
.hero-actions{
  margin-top:36px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.btn{
  font-weight:700;
  border-radius:13px;
  padding:12px 28px;
  border:1px solid transparent;
  transition:transform .25s,box-shadow .25s,border-color .25s,background .25s;
}
.btn:focus{box-shadow:0 0 0 4px rgba(34,211,238,.18)}
.btn-primary-custom{
  background:var(--grad-main);
  color:#06121a;
  border:0;
  box-shadow:0 10px 30px rgba(34,211,238,.25);
}
.btn-primary-custom:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 40px rgba(34,211,238,.35);
  color:#06121a;
}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.15);
  color:#fff;
}
.btn-ghost:hover{
  background:rgba(255,255,255,.09);
  border-color:rgba(255,255,255,.3);
  transform:translateY(-2px);
}
.hero-stats{
  position:relative;
  z-index:2;
  margin-top:56px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  max-width:760px;
}
.stat-item{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px;
  padding:16px 10px;
  text-align:center;
  backdrop-filter:blur(10px);
}
.stat-item strong{
  font-size:1.7rem;
  font-weight:900;
  background:var(--grad-main);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  display:block;
  line-height:1.1;
}
.stat-item span{
  font-size:.78rem;
  color:var(--text-soft);
  display:block;
  margin-top:6px;
  letter-spacing:.02em;
}

/* ===== Section header ===== */
.sec-head{
  margin-bottom:50px;
  max-width:720px;
}
.sec-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--primary);
  text-transform:uppercase;
  background:rgba(34,211,238,.08);
  border:1px solid rgba(34,211,238,.18);
  padding:5px 14px;
  border-radius:30px;
  margin-bottom:16px;
}
.sec-kicker i{font-size:.85rem}
.sec-title{
  font-size:clamp(1.7rem,3vw,2.6rem);
  font-weight:900;
  letter-spacing:-.02em;
}
.sec-desc{
  color:var(--text-soft);
  font-size:1rem;
  margin-top:14px;
}

/* ===== Card / Feature ===== */
.feature-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:36px 30px;
  height:100%;
  position:relative;
  overflow:hidden;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.feature-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:var(--grad-main);
  opacity:0;
  transition:opacity .3s ease;
}
.feature-card:hover{
  transform:translateY(-8px);
  border-color:var(--line-glow);
  box-shadow:var(--shadow-glow);
}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:64px;height:64px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,rgba(34,211,238,.14),rgba(168,139,250,.12));
  border:1px solid rgba(34,211,238,.22);
  border-radius:18px;
  color:var(--primary);
  font-size:1.7rem;
  margin-bottom:24px;
  box-shadow:0 8px 24px rgba(34,211,238,.08);
}
.feature-card h3{
  font-size:1.22rem;
  font-weight:800;
  margin-bottom:12px;
}
.feature-card p{
  color:var(--text-soft);
  font-size:.93rem;
  margin-bottom:18px;
}
.feature-card .tag-group{display:flex;flex-wrap:wrap;gap:8px}
.tag-link{
  font-size:.76rem;
  color:var(--text-soft);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:20px;
  padding:3px 12px;
  transition:all .25s;
}
.tag-link:hover{
  color:#fff;
  border-color:rgba(34,211,238,.4);
  background:rgba(34,211,238,.08);
}

/* ===== Cover card ===== */
.cover-card{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  height:300px;
  display:block;
  border:1px solid var(--line);
  transition:transform .3s,box-shadow .3s,border-color .3s;
  background:#0a0f1c;
}
.cover-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-glow);
  border-color:rgba(34,211,238,.35);
}
.cover-card img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.cover-card:hover img{transform:scale(1.06)}
.cover-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(4,8,15,.88) 100%);
  display:flex;
  align-items:flex-end;
  padding:26px;
}
.cover-overlay h3{
  font-size:1.25rem;
  font-weight:800;
  margin:0 0 8px;
}
.cover-overlay p{
  margin:0;
  font-size:.85rem;
  color:rgba(255,255,255,.68);
}
.cover-badge{
  position:absolute;
  top:18px;left:18px;
  background:rgba(5,10,20,.68);
  backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.15);
  color:#fff;
  border-radius:20px;
  font-size:.76rem;
  padding:4px 14px;
  z-index:2;
}

/* ===== Step timeline ===== */
.step-wrapper{
  position:relative;
}
.step-wrapper::before{
  content:"";
  position:absolute;
  top:30px;
  bottom:30px;
  left:26px;
  width:2px;
  background:linear-gradient(180deg,rgba(34,211,238,.5),rgba(168,139,250,.1));
}
.step-item{
  display:flex;
  gap:24px;
  position:relative;
  padding-bottom:36px;
}
.step-num{
  width:54px;height:54px;
  flex:0 0 54px;
  background:var(--bg-card);
  border:1px solid rgba(34,211,238,.3);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:900;
  font-size:1.1rem;
  color:var(--primary);
  box-shadow:0 0 0 6px rgba(34,211,238,.06),0 8px 20px rgba(0,0,0,.3);
  position:relative;
  z-index:1;
}
.step-body{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:24px 28px;
  flex:1;
  transition:border-color .3s,box-shadow .3s;
}
.step-body:hover{
  border-color:var(--line-glow);
  box-shadow:var(--shadow-glow);
}
.step-body h3{font-size:1.12rem;font-weight:800;margin-bottom:6px}
.step-body p{color:var(--text-soft);font-size:.9rem;margin:0}

/* ===== CMS List ===== */
.cms-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:22px 24px;
  height:100%;
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.cms-card:hover{
  transform:translateY(-4px);
  border-color:rgba(34,211,238,.3);
  box-shadow:0 12px 30px rgba(0,0,0,.28);
}
.cms-card .cms-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:.78rem;
  color:var(--text-mute);
  margin-bottom:10px;
  flex-wrap:wrap;
}
.cms-card .cms-cat{
  color:var(--primary);
  background:rgba(34,211,238,.08);
  border-radius:6px;
  padding:2px 10px;
  border:1px solid rgba(34,211,238,.16);
  font-size:.75rem;
  font-weight:700;
}
.cms-card h3{
  font-size:1.02rem;
  font-weight:800;
  line-height:1.4;
  margin-bottom:10px;
}
.cms-card h3 a{color:inherit}
.cms-card h3 a:hover{color:var(--primary)}
.cms-card p{
  color:var(--text-soft);
  font-size:.88rem;
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

/* ===== FAQ ===== */
.faq-item{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .3s;
}
.faq-item:hover{border-color:rgba(34,211,238,.3)}
.faq-q{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:20px 24px;
  font-weight:700;
  cursor:pointer;
  font-size:.98rem;
}
.faq-q i{
  color:var(--primary);
  font-size:.85rem;
  transition:transform .3s;
}
.faq-item.active .faq-q i{transform:rotate(45deg)}
.faq-a{
  display:none;
  padding:0 24px 22px;
  color:var(--text-soft);
  font-size:.92rem;
}

/* ===== CTA ===== */
.cta-area{
  position:relative;
  border-radius:32px;
  padding:64px 56px;
  overflow:hidden;
  border:1px solid var(--line-glow);
  background:
    linear-gradient(120deg,rgba(34,211,238,.12),rgba(129,140,248,.08)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.cta-area::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(8,13,24,.82),rgba(8,13,24,.55));
  z-index:1;
}
.cta-content{position:relative;z-index:2;max-width:650px}
.cta-content h2{
  font-size:clamp(1.6rem,3vw,2.4rem);
  font-weight:900;
  margin-bottom:16px;
}
.cta-content p{color:var(--text-soft);font-size:1.02rem;margin-bottom:28px}

/* ===== Footer ===== */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(5,9,17,.88);
  padding:80px 0 0;
}
.footer-title{
  font-size:1.1rem;
  font-weight:800;
  margin-bottom:20px;
  color:#fff;
}
.footer-links{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-links li{margin-bottom:10px}
.footer-links a{
  color:var(--text-soft);
  font-size:.9rem;
  transition:color .25s,padding-left .25s;
}
.footer-links a:hover{
  color:var(--primary);
  padding-left:6px;
}
.footer-links a i{
  width:18px;
  font-size:.72rem;
  color:var(--primary);
  margin-right:4px;
  opacity:.7;
}
.footer-about{
  color:var(--text-soft);
  font-size:.9rem;
  line-height:1.8;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  margin-top:60px;
  padding:22px 0;
  font-size:.8rem;
  color:var(--text-mute);
  text-align:center;
}
.footer-deco{
  width:48px;
  height:3px;
  background:var(--grad-main);
  border-radius:3px;
  margin-bottom:22px;
}

/* ===== Page banner internal ===== */
.page-banner{
  position:relative;
  padding:90px 0 70px;
  background:
    linear-gradient(180deg,rgba(8,13,24,.68),rgba(8,13,24,.9)),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
}
.breadcrumb-links{
  font-size:.82rem;
  color:var(--text-mute);
  margin-bottom:20px;
}
.breadcrumb-links a{color:var(--primary)}
.banner-title{
  font-size:clamp(2rem,4vw,3.2rem);
  font-weight:900;
}
.banner-sub{
  color:var(--text-soft);
  max-width:660px;
  margin-top:16px;
  font-size:1rem;
}

/* ===== Article page ===== */
.article-wrap{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:clamp(28px,5vw,56px);
}
.article-top h1{
  font-size:clamp(1.6rem,3vw,2.55rem);
  font-weight:900;
  line-height:1.3;
  margin-bottom:20px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  color:var(--text-mute);
  font-size:.85rem;
  padding-bottom:24px;
  margin-bottom:32px;
  border-bottom:1px solid var(--line);
}
.article-meta i{color:var(--primary);margin-right:6px}
.article-body{
  font-size:1rem;
  line-height:1.95;
  color:rgba(234,240,255,.9);
}
.article-body h2,.article-body h3{
  margin-top:36px;
  margin-bottom:18px;
  font-weight:800;
}
.article-body p{margin-bottom:22px}
.article-body ul,.article-body ol{padding-left:24px;margin-bottom:22px}
.article-body li{margin-bottom:8px}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.article-body blockquote{
  border-left:4px solid var(--primary);
  background:rgba(34,211,238,.06);
  border-radius:0 16px 16px 0;
  padding:20px 24px;
  margin:28px 0;
  color:var(--text-soft);
}
.article-body img{border-radius:18px;margin:26px 0}
.side-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:26px;
  margin-bottom:24px;
}
.side-card .side-title{
  font-size:1.05rem;
  font-weight:800;
  margin-bottom:16px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  gap:10px;
}
.side-card .side-title i{color:var(--primary)}
.side-link-list{
  list-style:none;
  padding:0;
  margin:0;
}
.side-link-list li{
  margin-bottom:10px;
  font-size:.9rem;
  color:var(--text-soft);
  display:flex;
  gap:8px;
}
.side-link-list i{
  color:var(--primary);
  font-size:.72rem;
  margin-top:5px;
}

/* ===== category ===== */
.cat-board{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:34px;
  height:100%;
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.cat-board:hover{
  transform:translateY(-6px);
  border-color:rgba(34,211,238,.3);
  box-shadow:var(--shadow-glow);
}
.cat-board .board-icon{
  width:54px;height:54px;
  border-radius:16px;
  background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(168,139,250,.12));
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
  font-size:1.4rem;
  margin-bottom:20px;
  border:1px solid rgba(34,211,238,.2);
}

/* ===== Data list table-like ===== */
.data-list{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
}
.data-row{
  display:grid;
  grid-template-columns:80px 1fr 120px;
  align-items:center;
  gap:16px;
  padding:18px 24px;
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .25s;
}
.data-row:last-child{border-bottom:0}
.data-row:hover{background:rgba(34,211,238,.04)}
.row-rank{
  font-size:1.5rem;
  font-weight:900;
  background:var(--grad-main);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.row-name{font-weight:700;font-size:.96rem}
.row-meta{color:var(--text-mute);font-size:.82rem;margin-top:4px}
.row-score{
  background:rgba(34,211,238,.08);
  color:var(--primary);
  border-radius:10px;
  padding:4px 10px;
  text-align:center;
  font-size:.8rem;
  font-weight:700;
  border:1px solid rgba(34,211,238,.15);
}

/* ===== tags ===== */
.tag-cloud{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.tag-cloud a{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:22px;
  padding:6px 16px;
  font-size:.82rem;
  color:var(--text-soft);
  transition:all .25s;
}
.tag-cloud a:hover{
  color:#fff;
  border-color:rgba(34,211,238,.4);
  background:rgba(34,211,238,.1);
  transform:translateY(-2px);
}

/* ===== responsive ===== */
@media(min-width:992px){
  .nav-search{display:flex}
}
@media(max-width:991.98px){
  .nav-search{
    margin-top:14px;
    width:100%;
    min-width:0;
  }
  .main-nav{
    padding-top:10px;
    border-top:1px solid rgba(255,255,255,.06);
  }
  .main-nav .nav-link{
    padding:10px 12px !important;
  }
  .main-nav .nav-link.active::before{
    left:12px;
    right:auto;
    width:42px;
  }
  .navbar-brand{
    font-size:1.02rem;
  }
}
@media(max-width:767.98px){
  .section-pad{padding:70px 0}
  .hero{min-height:72vh}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:12px}
  .cta-area{padding:44px 24px;border-radius:22px}
  .step-wrapper::before{left:22px}
  .step-num{width:46px;height:46px;flex-basis:46px;font-size:.95rem}
  .step-item{gap:16px}
  .data-row{grid-template-columns:60px 1fr;row-gap:8px}
  .row-score{justify-self:start}
  .article-wrap{padding:24px}
  .article-meta{gap:12px;font-size:.78rem}
}
@media(max-width:520px){
  .brand-logo{font-size:.88rem}
  .hero-title{font-size:2.1rem}
  .btn{padding:10px 20px;font-size:.9rem}
  .cover-card{height:250px}
  .stat-item strong{font-size:1.3rem}
  .footer-bottom{font-size:.72rem}
}

/* roulang page: category1 */
:root {
      --primary: #00d4ff;
      --primary-2: #7b5cff;
      --bg: #080d18;
      --bg-soft: #0e1526;
      --card-bg: #111a2e;
      --text: #e8f1ff;
      --muted: #8fa0bd;
      --border: rgba(0, 212, 255, .18);
      --radius: 18px;
      --radius-sm: 10px;
      --shadow: 0 20px 45px rgba(0, 0, 0, .45);
      --shadow-hover: 0 25px 55px rgba(0, 212, 255, .12);
      --space-section: 100px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color .3s ease, opacity .3s ease;
    }

    a:hover {
      color: #fff;
    }

    img {
      max-width: 100%;
      display: block;
    }

    button,
    input,
    textarea {
      font-family: inherit;
    }

    .container {
      max-width: 1200px;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* ===== 导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1080;
      background: rgba(8, 13, 24, .92);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(0, 212, 255, .25);
      box-shadow: 0 10px 35px rgba(0, 0, 0, .6);
    }

    .navbar {
      padding: 14px 0;
    }

    .navbar-brand {
      color: var(--text);
      font-weight: 700;
      font-size: 1.2rem;
      letter-spacing: .5px;
      transition: color .3s ease;
    }

    .navbar-brand:hover {
      color: var(--primary);
    }

    .brand-logo {
      background: linear-gradient(135deg, #fff 0%, var(--primary) 60%, var(--primary-2) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-weight: 800;
    }

    .main-nav .nav-link {
      color: rgba(255, 255, 255, .75);
      font-weight: 500;
      padding: 8px 20px;
      margin: 0 4px;
      border-radius: 30px;
      border: 1px solid transparent;
      transition: all .3s ease;
    }

    .main-nav .nav-link i {
      margin-right: 6px;
      font-size: .9rem;
      color: var(--primary);
    }

    .main-nav .nav-link:hover {
      color: #fff;
      border-color: rgba(0, 212, 255, .5);
      background: rgba(0, 212, 255, .08);
      transform: translateY(-2px);
    }

    .main-nav .nav-link.active {
      color: #fff;
      background: linear-gradient(135deg, rgba(0, 212, 255, .15), rgba(123, 92, 255, .15));
      border-color: var(--primary);
      box-shadow: 0 0 20px rgba(0, 212, 255, .3), inset 0 0 12px rgba(0, 212, 255, .08);
      font-weight: 600;
    }

    .navbar-toggler {
      color: var(--primary);
      font-size: 1.4rem;
      border: 1px solid rgba(0, 212, 255, .4);
      border-radius: 10px;
      padding: 4px 10px;
      line-height: 1;
    }

    .navbar-toggler:focus {
      box-shadow: none;
    }

    .nav-search {
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, .06);
      border: 1px solid rgba(255, 255, 255, .14);
      border-radius: 30px;
      padding: 2px 2px 2px 16px;
      transition: all .3s ease;
    }

    .nav-search:focus-within {
      border-color: var(--primary);
      box-shadow: 0 0 15px rgba(0, 212, 255, .2);
    }

    .nav-search input {
      background: transparent;
      border: none;
      outline: none;
      color: var(--text);
      font-size: .85rem;
      width: 140px;
    }

    .nav-search input::placeholder {
      color: var(--muted);
    }

    .nav-search button {
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      border: none;
      color: #04121a;
      width: 38px;
      height: 38px;
      border-radius: 50%;
      transition: all .3s ease;
    }

    .nav-search button:hover {
      transform: scale(1.08);
      box-shadow: 0 0 20px rgba(0, 212, 255, .45);
    }

    .btn-neon {
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      color: #04121a;
      font-weight: 700;
      border: none;
      border-radius: 30px;
      padding: 12px 30px;
      letter-spacing: .3px;
      box-shadow: 0 8px 25px rgba(0, 212, 255, .3);
      transition: all .3s ease;
    }

    .btn-neon:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 35px rgba(123, 92, 255, .4);
      color: #04121a;
    }

    .btn-neon:focus,
    .nav-search button:focus,
    .navbar-toggler:focus {
      outline: 2px solid var(--primary);
      outline-offset: 3px;
    }

    .btn-ghost {
      background: transparent;
      color: var(--text);
      border: 1px solid rgba(255, 255, 255, .3);
      border-radius: 30px;
      padding: 12px 30px;
      font-weight: 600;
      transition: all .3s ease;
    }

    .btn-ghost:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(0, 212, 255, .06);
      transform: translateY(-3px);
    }

    .nav-cta {
      padding: 10px 24px;
      font-size: .95rem;
    }

    /* ===== 分类页首屏 ===== */
    .page-hero {
      position: relative;
      min-height: 420px;
      background-size: cover;
      background-position: center;
      padding: 90px 0 70px;
      overflow: hidden;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(92deg, rgba(8, 13, 24, .96) 0%, rgba(8, 13, 24, .82) 45%, rgba(10, 20, 40, .65) 100%);
    }

    .page-hero::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--primary-2), transparent);
    }

    .page-hero .container {
      position: relative;
      z-index: 2;
    }

    .breadcrumb-custom {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, .06);
      border: 1px solid rgba(255, 255, 255, .12);
      padding: 6px 20px;
      border-radius: 30px;
      font-size: .85rem;
      color: var(--muted);
      margin-bottom: 25px;
    }

    .breadcrumb-custom a {
      color: var(--muted);
    }

    .breadcrumb-custom a:hover {
      color: var(--primary);
    }

    .breadcrumb-custom i {
      color: var(--primary);
      font-size: .75rem;
    }

    .page-hero h1 {
      font-size: clamp(2.2rem, 5vw, 3.4rem);
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 18px;
      letter-spacing: -1px;
    }

    .page-hero h1 span {
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.1rem;
      color: rgba(255, 255, 255, .85);
      max-width: 680px;
      margin-bottom: 30px;
      line-height: 1.8;
    }

    /* ===== 通用板块 ===== */
    .guide-section {
      padding: var(--space-section) 0;
      position: relative;
    }

    .section-tag {
      display: inline-block;
      background: linear-gradient(135deg, rgba(0, 212, 255, .18), rgba(123, 92, 255, .18));
      border: 1px solid var(--border);
      color: var(--primary);
      font-size: .8rem;
      font-weight: 600;
      letter-spacing: 2px;
      padding: 5px 16px;
      border-radius: 30px;
      margin-bottom: 14px;
      text-transform: uppercase;
    }

    .section-head {
      margin-bottom: 45px;
    }

    .section-head h2 {
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      font-weight: 700;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }

    .section-head p {
      color: var(--muted);
      max-width: 560px;
      margin-bottom: 0;
    }

    .section-head.text-center p {
      margin-left: auto;
      margin-right: auto;
    }

    /* ===== 图文介绍 ===== */
    .intro-section {
      background: var(--bg-soft);
    }

    .intro-image-wrap {
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
      transition: transform .4s ease, box-shadow .4s ease;
    }

    .intro-image-wrap:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }

    .intro-image-wrap img {
      width: 100%;
      height: 340px;
      object-fit: cover;
    }

    .intro-section h2 {
      font-size: 1.8rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .intro-section p {
      color: var(--muted);
      margin-bottom: 22px;
      line-height: 1.8;
    }

    .feature-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .feature-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 0;
      color: var(--text);
      border-bottom: 1px dashed rgba(255, 255, 255, .1);
    }

    .feature-list li:last-child {
      border-bottom: none;
    }

    .feature-list li i {
      color: var(--primary);
      font-size: 1.1rem;
      flex-shrink: 0;
    }

    /* ===== 卡片网格 ===== */
    .topic-section {
      background: var(--bg);
    }

    .topic-card {
      background: var(--card-bg);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: var(--radius);
      padding: 24px;
      height: 100%;
      position: relative;
      overflow: hidden;
      transition: all .4s ease;
    }

    .topic-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--primary-2));
      opacity: 0;
      transition: opacity .3s ease;
    }

    .topic-card:hover {
      transform: translateY(-8px);
      border-color: rgba(0, 212, 255, .35);
      box-shadow: var(--shadow);
    }

    .topic-card:hover::before {
      opacity: 1;
    }

    .topic-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(0, 212, 255, .15), rgba(123, 92, 255, .15));
      border: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 1.3rem;
      margin-bottom: 18px;
      transition: all .3s ease;
    }

    .topic-card:hover .topic-icon {
      transform: scale(1.08) rotate(-5deg);
    }

    .topic-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .topic-card p {
      color: var(--muted);
      font-size: .92rem;
      margin-bottom: 0;
      line-height: 1.7;
    }

    /* ===== 资讯列表 ===== */
    .latest-section {
      background: var(--bg-soft);
    }

    .guide-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .guide-list-item {
      background: var(--card-bg);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: var(--radius-sm);
      padding: 22px 25px;
      display: flex;
      align-items: center;
      gap: 18px;
      transition: all .35s ease;
    }

    .guide-list-item:hover {
      border-color: rgba(0, 212, 255, .3);
      transform: translateX(6px);
      box-shadow: var(--shadow);
    }

    .guide-list-date {
      background: rgba(0, 212, 255, .12);
      border: 1px solid var(--border);
      color: var(--primary);
      font-weight: 700;
      font-size: .8rem;
      text-align: center;
      border-radius: 12px;
      padding: 10px 8px;
      min-width: 68px;
      flex-shrink: 0;
    }

    .guide-list-date span {
      display: block;
      font-size: 1.3rem;
      line-height: 1.2;
    }

    .guide-list-item h3 {
      font-size: 1.02rem;
      font-weight: 600;
      margin-bottom: 4px;
      line-height: 1.5;
    }

    .guide-list-item p {
      color: var(--muted);
      font-size: .87rem;
      margin-bottom: 0;
    }

    /* ===== 步骤流程 ===== */
    .steps-section {
      background: var(--bg);
    }

    .step-item {
      text-align: center;
      padding: 35px 25px;
      background: var(--card-bg);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: var(--radius);
      height: 100%;
      position: relative;
      transition: all .35s ease;
    }

    .step-item:hover {
      border-color: var(--border);
      transform: translateY(-6px);
      box-shadow: var(--shadow);
    }

    .step-num {
      font-size: 2.6rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
      margin-bottom: 12px;
      display: inline-block;
    }

    .step-item h3 {
      font-size: 1.1rem;
      margin-bottom: 10px;
    }

    .step-item p {
      color: var(--muted);
      font-size: .9rem;
      margin-bottom: 0;
    }

    /* ===== 数据统计 ===== */
    .stats-section {
      background: var(--bg-soft);
      border-top: 1px solid rgba(255, 255, 255, .05);
      border-bottom: 1px solid rgba(255, 255, 255, .05);
      padding: 60px 0;
    }

    .stat-item {
      text-align: center;
      padding: 20px;
    }

    .stat-num {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.2;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .stat-label {
      color: var(--muted);
      font-size: .9rem;
      margin-top: 6px;
      letter-spacing: 1px;
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--bg);
    }

    .accordion {
      --bs-accordion-bg: var(--card-bg);
      --bs-accordion-border-color: rgba(255, 255, 255, .1);
      --bs-accordion-color: var(--text);
      --bs-accordion-active-bg: var(--card-bg);
      --bs-accordion-active-color: var(--primary);
      --bs-accordion-btn-focus-box-shadow: none;
      --bs-accordion-btn-icon: none;
      --bs-accordion-btn-active-icon: none;
      max-width: 850px;
      margin: 0 auto;
    }

    .accordion-item {
      background: var(--card-bg);
      border: 1px solid rgba(255, 255, 255, .1);
      border-radius: var(--radius-sm) !important;
      margin-bottom: 16px;
      overflow: hidden;
    }

    .accordion-button {
      background: transparent;
      color: var(--text);
      font-weight: 600;
      padding: 20px 25px;
      font-size: 1rem;
    }

    .accordion-button::after {
      content: "\f078";
      font-family: "Font Awesome 6 Free", "Font Awesome 5 Free";
      font-weight: 900;
      background: none;
      color: var(--primary);
      font-size: .85rem;
      width: auto;
      height: auto;
      transition: transform .3s ease;
    }

    .accordion-button:not(.collapsed)::after {
      transform: rotate(180deg);
    }

    .accordion-button:focus {
      box-shadow: none;
      outline: 2px solid rgba(0, 212, 255, .4);
      outline-offset: -2px;
    }

    .accordion-button:not(.collapsed) {
      background: rgba(0, 212, 255, .06);
      color: var(--primary);
      box-shadow: inset 0 -1px 0 rgba(0, 212, 255, .1);
    }

    .accordion-body {
      padding: 5px 25px 22px;
      color: var(--muted);
      line-height: 1.8;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--bg-soft);
      padding: 80px 0;
    }

    .cta-box {
      background: linear-gradient(135deg, rgba(8, 13, 24, .95), rgba(20, 30, 55, .95));
      border: 1px solid var(--border);
      border-radius: 22px;
      padding: 60px 45px;
      text-align: center;
      position: relative;
      overflow: hidden;
      box-shadow: var(--shadow);
    }

    .cta-box::before {
      content: "";
      position: absolute;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 70%;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--primary), var(--primary-2), transparent);
    }

    .cta-box h2 {
      font-size: 1.8rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .cta-box p {
      color: var(--muted);
      max-width: 520px;
      margin: 0 auto 28px;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #060a14;
      border-top: 1px solid rgba(0, 212, 255, .2);
      padding: 70px 0 0;
    }

    .footer-about {
      color: var(--muted);
      font-size: .92rem;
      line-height: 1.8;
      margin-bottom: 0;
    }

    .tag-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .06);
      border: 1px solid rgba(255, 255, 255, .1);
      color: var(--muted);
      transition: all .3s ease;
    }

    .tag-link:hover {
      background: rgba(0, 212, 255, .15);
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-3px);
      box-shadow: 0 8px 20px rgba(0, 212, 255, .15);
    }

    .footer-title {
      color: #fff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .footer-deco {
      width: 28px;
      height: 2px;
      background: linear-gradient(90deg, var(--primary), var(--primary-2));
      border-radius: 2px;
      margin-bottom: 20px;
    }

    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-links li {
      margin-bottom: 10px;
      color: var(--muted);
      font-size: .9rem;
    }

    .footer-links a {
      color: var(--muted);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all .3s ease;
    }

    .footer-links a:hover {
      color: var(--primary);
      padding-left: 5px;
    }

    .footer-links i {
      color: var(--primary);
      font-size: .75rem;
    }

    .footer-bottom {
      margin-top: 50px;
      padding: 20px 0;
      border-top: 1px solid rgba(255, 255, 255, .08);
      text-align: center;
      color: rgba(255, 255, 255, .45);
      font-size: .85rem;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      :root {
        --space-section: 75px;
      }

      .page-hero {
        min-height: 370px;
      }

      .guide-list {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      :root {
        --space-section: 60px;
      }

      .navbar-nav.main-nav {
        margin-top: 15px;
      }

      .main-nav .nav-link {
        padding: 10px 18px;
      }

      .nav-search {
        width: 100%;
      }

      .nav-search input {
        flex: 1;
      }

      .page-hero {
        padding: 65px 0 50px;
        min-height: 320px;
      }

      .hero-desc {
        font-size: 1rem;
      }

      .intro-image-wrap img {
        height: 260px;
      }

      .guide-list-item {
        flex-direction: row;
        align-items: flex-start;
      }

      .cta-box {
        padding: 40px 25px;
      }

      .stat-num {
        font-size: 2.2rem;
      }
    }

    @media (max-width: 520px) {
      :root {
        --space-section: 50px;
      }

      .navbar-brand {
        font-size: 1rem;
      }

      .page-hero h1 {
        font-size: 1.8rem;
      }

      .section-head h2 {
        font-size: 1.5rem;
      }

      .guide-list-item {
        flex-direction: column;
        padding: 20px;
      }

      .guide-list-date {
        min-width: 60px;
      }

      .step-item {
        padding: 25px 18px;
      }

      .cta-box h2 {
        font-size: 1.4rem;
      }

      .btn-neon,
      .btn-ghost {
        width: 100%;
      }

      .page-hero .d-flex {
        flex-direction: column;
        gap: 12px !important;
      }
    }

/* roulang page: article */
:root {
            --primary: #00e5ff;
            --primary-rgb: 0, 229, 255;
            --secondary: #ff3d83;
            --accent: #a44dff;
            --bg-deep: #05080f;
            --bg-dark: #0a0f1c;
            --bg-card: #101827;
            --bg-card-hover: #151f33;
            --text-main: #e9eef8;
            --text-body: #c3cede;
            --text-muted: #8a95ad;
            --border-color: rgba(255, 255, 255, 0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.55);
            --glow-primary: 0 0 20px rgba(0, 229, 255, 0.35);
            --transition: 0.3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            background: var(--bg-deep);
            color: var(--text-body);
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #7befff;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1280px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .btn {
            border-radius: 50rem;
            padding: 0.65rem 1.7rem;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(0, 229, 255, 0.35);
            outline-offset: 2px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #00b4d8);
            border-color: var(--primary);
            color: #04121a;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #33ebff, var(--primary));
            border-color: #33ebff;
            color: #04121a;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.4);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #e9eef8;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-glow {
            box-shadow: 0 0 25px rgba(0, 229, 255, 0.28);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 0.45rem 0.7rem;
            color: #e9eef8;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.3);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(5, 8, 15, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.18);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }
        .site-header .navbar {
            padding: 0.8rem 0;
        }
        .navbar-brand {
            color: #fff;
            font-weight: 800;
            font-size: 1.15rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
        }
        .navbar-brand:hover {
            color: var(--primary);
        }
        .navbar-brand i {
            color: var(--primary);
            text-shadow: 0 0 18px rgba(0, 229, 255, 0.8);
            font-size: 1.35rem;
        }
        .brand-logo {
            color: #fff;
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .main-nav .nav-link {
            color: rgba(233, 238, 248, 0.72) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.6rem 0.95rem;
            margin: 0 0.2rem;
            border-radius: 12px;
            transition: all var(--transition);
            position: relative;
            border-bottom: 2px solid transparent;
        }
        .main-nav .nav-link i {
            margin-right: 0.4rem;
            font-size: 0.8rem;
            color: var(--primary);
        }
        .main-nav .nav-link:hover {
            color: #fff !important;
            background: rgba(0, 229, 255, 0.08);
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
        }
        .main-nav .nav-link.active {
            color: var(--primary) !important;
            background: rgba(0, 229, 255, 0.1);
            border-bottom: 2px solid var(--primary);
            box-shadow: 0 8px 28px rgba(0, 229, 255, 0.12);
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 50rem;
            overflow: hidden;
            transition: all var(--transition);
            max-width: 220px;
        }
        .nav-search:focus-within {
            border-color: rgba(0, 229, 255, 0.55);
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
        }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 0.5rem 0.8rem 0.5rem 1.1rem;
            outline: none;
            color: #fff;
            width: 100%;
            font-size: 0.9rem;
        }
        .nav-search input::placeholder {
            color: rgba(233, 238, 248, 0.4);
        }
        .nav-search button {
            background: transparent;
            border: none;
            color: var(--primary);
            padding: 0.5rem 0.9rem;
            font-size: 0.9rem;
            cursor: pointer;
        }
        .nav-search button:focus-visible {
            outline: 2px solid var(--primary);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), #00b4d8);
            color: #04121a !important;
            border-radius: 50rem;
            padding: 0.5rem 1.35rem;
            font-weight: 700;
            font-size: 0.9rem;
            border: none;
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.22);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 35px rgba(0, 229, 255, 0.4);
            color: #04121a !important;
        }
        .article-hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
            padding: 4.5rem 0 3.5rem;
            border-bottom: 1px solid rgba(0, 229, 255, 0.12);
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(5, 8, 15, 0.55) 0%, rgba(5, 8, 15, 0.88) 70%, var(--bg-deep) 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.88rem;
            margin-bottom: 1.4rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: rgba(233, 238, 248, 0.7);
            transition: all var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav i {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.3);
        }
        .breadcrumb-nav span {
            color: var(--primary);
            max-width: 380px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-hero h1 {
            font-size: 2.4rem;
            line-height: 1.35;
            font-weight: 800;
            color: #fff;
            max-width: 860px;
            text-shadow: 0 2px 30px rgba(0, 229, 255, 0.2);
            margin-bottom: 1.1rem;
            letter-spacing: 0.01em;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem 1.8rem;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .article-meta i {
            color: var(--primary);
            font-size: 0.85rem;
        }
        .article-meta .meta-cat {
            background: rgba(0, 229, 255, 0.12);
            border: 1px solid rgba(0, 229, 255, 0.3);
            color: var(--primary);
            padding: 0.18rem 0.8rem;
            border-radius: 50rem;
            font-size: 0.82rem;
            font-weight: 600;
        }
        .article-section {
            background: var(--bg-deep);
            padding: 3.5rem 0 2rem;
        }
        .article-main-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .article-cover {
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 2rem;
            border: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
        }
        .article-cover img {
            width: 100%;
            height: auto;
        }
        .article-content {
            font-size: 1.03rem;
            line-height: 1.9;
            color: var(--text-body);
            word-break: break-word;
        }
        .article-content p {
            margin: 1.2rem 0;
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin: 2.2rem 0 1.2rem;
            padding-left: 1rem;
            border-left: 4px solid var(--primary);
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 1.22rem;
            font-weight: 700;
            color: #e9eef8;
            margin: 1.8rem 0 0.9rem;
        }
        .article-content h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: #e9eef8;
            margin: 1.4rem 0 0.6rem;
        }
        .article-content ul,
        .article-content ol {
            padding-left: 1.25rem;
            margin: 1.2rem 0;
        }
        .article-content li {
            margin: 0.5rem 0;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(0, 229, 255, 0.06);
            padding: 1.2rem 1.5rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #b6c2d6;
            margin: 1.6rem 0;
        }
        .article-content blockquote p {
            margin: 0;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 1.6rem 0;
            border: 1px solid var(--border-color);
            width: auto;
            max-width: 100%;
        }
        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(0, 229, 255, 0.3);
            transition: all var(--transition);
        }
        .article-content a:hover {
            color: #7befff;
            border-bottom-color: #7befff;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border-color);
            padding: 0.75rem 1rem;
            background: rgba(255, 255, 255, 0.02);
        }
        .article-content table th {
            background: rgba(0, 229, 255, 0.08);
            color: #e9eef8;
            font-weight: 700;
        }
        .article-content code {
            background: rgba(0, 229, 255, 0.1);
            color: #7befff;
            border-radius: 6px;
            padding: 0.15rem 0.4rem;
            font-size: 0.9em;
        }
        .article-content pre {
            background: #0b1120;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 1.2rem;
            overflow-x: auto;
            color: #c3cede;
            margin: 1.5rem 0;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.7rem;
            margin-top: 2rem;
            padding-top: 1.6rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .badge-tag {
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.22);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 0.35rem 1rem;
            border-radius: 50rem;
            transition: all var(--transition);
        }
        .badge-tag:hover {
            background: rgba(0, 229, 255, 0.18);
            border-color: var(--primary);
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.15);
        }
        .not-found-box {
            text-align: center;
            padding: 3rem 2rem;
        }
        .not-found-box i {
            font-size: 3.2rem;
            color: var(--primary);
            opacity: 0.6;
            margin-bottom: 1rem;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            color: #fff;
            font-weight: 800;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin: 1rem auto 0;
            max-width: 420px;
        }
        .article-sidebar .sidebar-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            padding: 1.6rem;
            margin-bottom: 1.5rem;
            transition: all var(--transition);
        }
        .article-sidebar .sidebar-card:hover {
            border-color: rgba(0, 229, 255, 0.22);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }
        .sidebar-title {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            font-size: 1.08rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.3rem;
            letter-spacing: 0.02em;
        }
        .sidebar-title i {
            color: var(--primary);
            font-size: 1rem;
            width: 2rem;
            height: 2rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 255, 0.12);
            border-radius: 10px;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.1);
        }
        .sidebar-info-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-info-list li {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            padding: 0.55rem 0;
            font-size: 0.92rem;
            color: var(--text-body);
            border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
        }
        .sidebar-info-list li:last-child {
            border-bottom: none;
        }
        .sidebar-info-list li i {
            color: var(--primary);
            width: 1.1rem;
            font-size: 0.85rem;
        }
        .sidebar-post-list {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .sidebar-post-item {
            display: flex;
            align-items: flex-start;
            gap: 0.7rem;
            padding: 0.75rem;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid transparent;
            transition: all var(--transition);
        }
        .sidebar-post-item:hover {
            background: rgba(0, 229, 255, 0.05);
            border-color: rgba(0, 229, 255, 0.15);
            transform: translateX(3px);
        }
        .post-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 8px var(--primary);
            flex-shrink: 0;
            margin-top: 0.5rem;
        }
        .sidebar-post-info {
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
        }
        .sidebar-post-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: #dde5f0;
            line-height: 1.45;
            transition: color var(--transition);
        }
        .sidebar-post-item:hover .sidebar-post-title {
            color: var(--primary);
        }
        .sidebar-post-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .sidebar-post-date i {
            color: var(--primary);
        }
        .empty-mini {
            font-size: 0.9rem;
            color: var(--text-muted);
            text-align: center;
            padding: 1.5rem 0;
        }
        .related-section {
            background: var(--bg-dark);
            padding: 4.5rem 0;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 3rem;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 700;
            padding: 0.35rem 1.2rem;
            border-radius: 50rem;
            letter-spacing: 0.05em;
            margin-bottom: 1rem;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.12);
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.8rem;
            letter-spacing: -0.01em;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 1rem;
        }
        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            transition: all var(--transition);
        }
        .related-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 229, 255, 0.3);
        }
        .card-img-wrap {
            height: 190px;
            overflow: hidden;
            position: relative;
        }
        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .img-category {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 229, 255, 0.92);
            color: #04121a;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.2rem 0.8rem;
            border-radius: 50rem;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
        }
        .card-body-wrap {
            padding: 1.5rem 1.5rem 1.3rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-body-wrap h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.5;
            margin-bottom: 0.7rem;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card:hover .card-body-wrap h3 {
            color: var(--primary);
        }
        .card-body-wrap p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1.2rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .card-meta span {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .card-meta i {
            color: var(--primary);
        }
        .card-meta .read-more {
            color: var(--primary);
            font-weight: 600;
        }
        .empty-block {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 3rem;
            text-align: center;
            color: var(--text-muted);
        }
        .faq-section {
            background: var(--bg-deep);
            padding: 4.5rem 0;
        }
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius) !important;
            margin-bottom: 1rem;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-accordion .accordion-item:hover {
            border-color: rgba(0, 229, 255, 0.2);
        }
        .faq-accordion .accordion-button {
            background: transparent;
            color: #e9eef8;
            font-weight: 700;
            font-size: 1rem;
            padding: 1.3rem 1.6rem;
            box-shadow: none;
            border-radius: 0 !important;
            transition: all var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 255, 0.06);
            color: var(--primary);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.2);
        }
        .faq-accordion .accordion-button::after {
            filter: brightness(0) invert(1);
            opacity: 0.7;
            transition: all var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            filter: brightness(0) saturate(100%) invert(82%) sepia(100%) saturate(3000%) hue-rotate(160deg);
            opacity: 1;
        }
        .faq-accordion .accordion-body {
            padding: 0.6rem 1.6rem 1.4rem;
            color: var(--text-body);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .cta-section {
            background: var(--bg-dark);
            padding: 4rem 0 5rem;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.16), rgba(164, 77, 255, 0.12)), var(--bg-card);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 3.5rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.08);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -80%;
            left: -20%;
            width: 140%;
            height: 260%;
            background: radial-gradient(circle at 30% 30%, rgba(0, 229, 255, 0.12), transparent 55%);
            pointer-events: none;
        }
        .cta-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(0, 229, 255, 0.14);
            border: 1px solid rgba(0, 229, 255, 0.35);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 700;
            padding: 0.35rem 1.2rem;
            border-radius: 50rem;
            margin-bottom: 1.5rem;
            letter-spacing: 0.04em;
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.12);
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .cta-box p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 2rem;
            font-size: 1rem;
        }
        .cta-btns {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .site-footer {
            background: #04070d;
            border-top: 1px solid rgba(0, 229, 255, 0.12);
            padding: 4.5rem 0 2rem;
        }
        .site-footer .brand-logo {
            font-size: 1.15rem;
        }
        .footer-about {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 340px;
        }
        .tag-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            color: var(--text-muted);
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .tag-link:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.2);
        }
        .footer-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            letter-spacing: 0.03em;
        }
        .footer-deco {
            width: 36px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.6rem;
            font-size: 0.9rem;
        }
        .footer-links a {
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: all var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 3px;
        }
        .footer-links li i {
            color: var(--primary);
            font-size: 0.78rem;
        }
        .footer-bottom {
            margin-top: 3rem;
            padding-top: 1.6rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        @media (max-width: 991.98px) {
            .main-nav {
                padding: 0.8rem 0;
            }
            .main-nav .nav-link {
                padding: 0.8rem 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
                border-radius: 10px;
            }
            .nav-search {
                max-width: 100%;
                width: 100%;
            }
            .article-hero {
                padding: 3.5rem 0 2.8rem;
            }
            .article-hero h1 {
                font-size: 1.9rem;
            }
            .article-main-card {
                padding: 1.6rem;
            }
            .cta-box {
                padding: 2.4rem 1.4rem;
            }
        }
        @media (max-width: 767.98px) {
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-meta {
                gap: 0.6rem 1.2rem;
                font-size: 0.82rem;
            }
            .article-main-card {
                padding: 1.2rem;
            }
            .article-content {
                font-size: 0.98rem;
                line-height: 1.82;
            }
            .article-content h2 {
                font-size: 1.25rem;
            }
            .article-content h3 {
                font-size: 1.12rem;
            }
            .section-head h2 {
                font-size: 1.55rem;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .card-img-wrap {
                height: 170px;
            }
        }
        @media (max-width: 575.98px) {
            .article-hero {
                padding: 2.5rem 0 2.2rem;
            }
            .article-main-card {
                padding: 1rem;
                border-radius: 14px;
            }
            .article-cover {
                margin-bottom: 1.4rem;
            }
            .article-tags {
                gap: 0.4rem;
            }
            .footer-links li {
                font-size: 0.85rem;
            }
        }