/* bdstv unique stylesheet — namespace bdstv-* */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bdstv-bg:#071226;--bdstv-bg2:#0d1f3d;--bdstv-text:#eaf3ff;--bdstv-muted:#9bb0d4;
  --bdstv-pri:#fbbf24;--bdstv-acc:#38bdf8;--bdstv-extra:#f472b6;
  --bdstv-card:rgba(255,255,255,.05);--bdstv-border:rgba(255,255,255,.1);
  --bdstv-r:16px;--bdstv-trans:cubic-bezier(.2,.8,.2,1);
  --bdstv-shadow:0 12px 36px rgba(0,0,0,.5);
}
html,body{background:var(--bdstv-bg);color:var(--bdstv-text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--bdstv-trans)}
a:hover{color:var(--bdstv-acc)}

.bdstv-body{min-height:100vh;background:radial-gradient(1100px 600px at 8% -10%,rgba(99,102,241,.28),transparent 60%),radial-gradient(900px 500px at 92% 8%,rgba(34,211,238,.18),transparent 60%),var(--bdstv-bg)}
.bdstv-header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(18px);background:rgba(10,14,39,.7);border-bottom:1px solid var(--bdstv-border)}
.bdstv-nav-inner{max-width:1280px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.bdstv-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.bdstv-logo-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--bdstv-pri),var(--bdstv-acc));display:grid;place-items:center;color:#fff;font-weight:900}
.bdstv-brand{background:linear-gradient(120deg,#fff,#bcd3ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.bdstv-nav{display:flex;gap:6px;flex:1;flex-wrap:wrap;justify-content:center}
.bdstv-nav a{padding:8px 14px;border-radius:999px;font-size:14px;color:var(--bdstv-muted)}
.bdstv-nav a:hover{color:#fff;background:rgba(255,255,255,.06)}
.bdstv-active{color:#fff !important;background:linear-gradient(120deg,var(--bdstv-pri),var(--bdstv-acc)) !important;box-shadow:0 6px 20px rgba(99,102,241,.4)}
.bdstv-search{display:flex;background:rgba(255,255,255,.07);border:1px solid var(--bdstv-border);border-radius:999px;padding:6px 8px 6px 14px}
.bdstv-search input{background:transparent;border:0;outline:0;color:#fff;width:200px}
.bdstv-search button{background:linear-gradient(120deg,var(--bdstv-pri),var(--bdstv-acc));border:0;color:#fff;width:32px;height:32px;border-radius:999px;cursor:pointer}
.bdstv-crumb{max-width:1280px;margin:14px auto 0;padding:0 20px;color:var(--bdstv-muted);font-size:13px}
.bdstv-crumb ol{list-style:none;display:flex;gap:8px;flex-wrap:wrap}
.bdstv-crumb li+li::before{content:"›";margin-right:6px;opacity:.6}
.bdstv-main{max-width:1280px;margin:0 auto;padding:20px}
.bdstv-hero{position:relative;border-radius:var(--bdstv-r);overflow:hidden;padding:64px 36px;background-size:cover;background-position:center;min-height:340px;display:flex;align-items:center;box-shadow:var(--bdstv-shadow)}
.bdstv-glass{max-width:680px;background:rgba(10,14,39,.5);backdrop-filter:blur(20px);border:1px solid var(--bdstv-border);border-radius:var(--bdstv-r);padding:28px 30px}
.bdstv-h1{font-size:clamp(22px,3.4vw,38px);font-weight:800;line-height:1.25;margin-bottom:12px;background:linear-gradient(120deg,#fff,#bcd3ff,#a5f3fc);-webkit-background-clip:text;background-clip:text;color:transparent}
.bdstv-glass p{color:#cdd5f0;margin-bottom:18px}
.bdstv-cta{display:flex;gap:12px;flex-wrap:wrap}
.bdstv-btn-primary,.bdstv-btn-ghost{display:inline-flex;align-items:center;justify-content:center;padding:12px 22px;border-radius:999px;font-weight:600;font-size:14px;transition:transform .25s var(--bdstv-trans)}
.bdstv-btn-primary{background:linear-gradient(120deg,var(--bdstv-pri),var(--bdstv-acc));color:#fff;box-shadow:0 10px 30px rgba(99,102,241,.4)}
.bdstv-btn-primary:hover{transform:translateY(-2px);color:#fff}
.bdstv-btn-ghost{border:1px solid var(--bdstv-border);color:#fff}
.bdstv-section{margin-top:40px}
.bdstv-section h2{font-size:clamp(18px,2.4vw,26px);margin-bottom:8px;font-weight:700}
.bdstv-section h2::before{content:"";display:inline-block;width:6px;height:22px;background:linear-gradient(var(--bdstv-pri),var(--bdstv-acc));border-radius:4px;vertical-align:middle;margin-right:10px}
.bdstv-lead{color:var(--bdstv-muted);margin-bottom:18px;max-width:820px}
.bdstv-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.bdstv-tags span{padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--bdstv-border);font-size:12px;color:#cdd5f0}
.bdstv-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin-top:18px}
.bdstv-card{background:var(--bdstv-card);border:1px solid var(--bdstv-border);border-radius:var(--bdstv-r);overflow:hidden;transition:transform .35s var(--bdstv-trans),box-shadow .35s var(--bdstv-trans)}
.bdstv-card:hover{transform:translateY(-6px);box-shadow:0 22px 44px rgba(0,0,0,.45)}
.bdstv-thumb{position:relative;display:block;aspect-ratio:5/3;overflow:hidden}
.bdstv-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--bdstv-trans)}
.bdstv-card:hover .bdstv-thumb img{transform:scale(1.06)}
.bdstv-tag{position:absolute;top:10px;left:10px;background:rgba(10,14,39,.7);color:#fff;font-size:12px;padding:4px 10px;border-radius:999px;border:1px solid var(--bdstv-border)}
.bdstv-card h3{padding:14px 16px 4px;font-size:15px;font-weight:700;color:#fff}
.bdstv-card p{padding:0 16px 16px;color:var(--bdstv-muted);font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bdstv-related{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:10px;margin-top:14px}
.bdstv-related a{display:block;padding:14px 16px;background:var(--bdstv-card);border:1px solid var(--bdstv-border);border-radius:12px;font-size:14px}
.bdstv-related a:hover{border-color:var(--bdstv-acc)}
.bdstv-reviews{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.bdstv-review{background:var(--bdstv-card);border:1px solid var(--bdstv-border);border-radius:var(--bdstv-r);padding:18px;position:relative}
.bdstv-review::before{content:"\201D";position:absolute;top:-10px;right:14px;font-size:60px;color:var(--bdstv-pri);opacity:.5;line-height:1}
.bdstv-review p{color:#dde3ff;font-size:14px;margin-bottom:10px}
.bdstv-review cite{color:var(--bdstv-muted);font-size:12px;font-style:normal}
.bdstv-faq{display:grid;gap:10px;max-width:880px}
.bdstv-faq-item{background:var(--bdstv-card);border:1px solid var(--bdstv-border);border-radius:14px;padding:14px 18px}
.bdstv-faq-item[open]{background:rgba(99,102,241,.1);border-color:rgba(99,102,241,.4)}
.bdstv-faq-item summary{cursor:pointer;font-weight:600;font-size:15px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.bdstv-faq-item summary::after{content:"+";font-size:20px;color:var(--bdstv-acc)}
.bdstv-faq-item[open] summary::after{content:"–"}
.bdstv-faq-item p{margin-top:10px;color:var(--bdstv-muted);font-size:14px}
.bdstv-share{display:flex;flex-wrap:wrap;gap:10px}
.bdstv-share-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;background:var(--bdstv-card);border:1px solid var(--bdstv-border);color:#fff;border-radius:999px;cursor:pointer;font-size:13px}
.bdstv-share-btn:hover{background:linear-gradient(120deg,var(--bdstv-pri),var(--bdstv-acc));border-color:transparent;transform:translateY(-2px)}
.bdstv-contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:18px;margin-top:18px}
.bdstv-glass-card{background:var(--bdstv-card);border:1px solid var(--bdstv-border);border-radius:var(--bdstv-r);padding:22px}
.bdstv-glass-card h2{margin-bottom:14px}
.bdstv-glass-card p{margin-bottom:8px;font-size:14px;color:#dde3ff}
.bdstv-glass-card pre{background:rgba(0,0,0,.4);border-radius:10px;padding:14px;overflow:auto;font-size:13px;color:#a5f3fc}
.bdstv-prose h2{margin:18px 0 8px}
.bdstv-prose p{color:#cdd5f0;margin-bottom:10px}
.bdstv-footer{margin-top:60px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.5));border-top:1px solid var(--bdstv-border)}
.bdstv-footer-inner{max-width:1280px;margin:0 auto;padding:40px 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px}
.bdstv-footer h3{font-size:15px;margin-bottom:12px;color:#fff}
.bdstv-footer p,.bdstv-footer li{color:var(--bdstv-muted);font-size:13px;line-height:1.7}
.bdstv-footer ul{list-style:none}
.bdstv-copy{text-align:center;padding:18px;border-top:1px solid var(--bdstv-border);color:var(--bdstv-muted);font-size:12px}
@media (max-width:768px){.bdstv-nav{order:3;width:100%;overflow-x:auto;flex-wrap:nowrap}.bdstv-search input{width:140px}.bdstv-hero{padding:40px 20px;min-height:240px}}