/* nv71n — domain-scoped modern UI · layout=list */
:root{
  --nv71n-bg:#04110d; --nv71n-bg2:#0a221b;
  --nv71n-surface:rgba(255,255,255,.04); --nv71n-surface-2:rgba(255,255,255,.10);
  --nv71n-border:rgba(255,255,255,.10);
  --nv71n-text:#eaffe8; --nv71n-muted:#9bcdb6;
  --nv71n-accent:#19e3a8; --nv71n-accent-2:#7afcff;
  --nv71n-radius:16px;
  --nv71n-shadow:0 18px 50px -18px #19e3a866;
  --nv71n-trans:.3s cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--nv71n-bg);color:var(--nv71n-text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
body{min-height:100vh;background:radial-gradient(1200px 600px at 8% -8%,#19e3a833,transparent 55%),radial-gradient(900px 500px at 100% 0%,#7afcff29,transparent 55%),var(--nv71n-bg)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--nv71n-trans)}
a:hover{color:var(--nv71n-accent-2)}

.nv71n-header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);background:#04110db3;border-bottom:1px solid var(--nv71n-border)}
.nv71n-nav-wrap{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:22px;padding:14px 22px}
.nv71n-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.4px;flex-shrink:0}
.nv71n-logo svg{width:38px;height:38px;filter:drop-shadow(0 0 10px #19e3a899)}
.nv71n-nav{display:flex;gap:4px;flex:1;flex-wrap:wrap;justify-content:center}
.nv71n-nav a{padding:8px 14px;border-radius:10px;font-size:14px;color:var(--nv71n-muted);transition:all var(--nv71n-trans);position:relative}
.nv71n-nav a:hover,.nv71n-nav a.nv71n-active{color:#fff;background:var(--nv71n-surface)}
.nv71n-nav a.nv71n-active::after{content:"";position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--nv71n-accent),var(--nv71n-accent-2))}
.nv71n-search{flex:0 0 240px;position:relative}
.nv71n-search input{width:100%;padding:10px 14px 10px 38px;border-radius:999px;border:1px solid var(--nv71n-border);background:var(--nv71n-surface);color:#fff;outline:none;transition:all var(--nv71n-trans);font-size:14px}
.nv71n-search input::placeholder{color:var(--nv71n-muted)}
.nv71n-search input:focus{border-color:var(--nv71n-accent);background:var(--nv71n-surface-2);box-shadow:0 0 0 3px #19e3a833}
.nv71n-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--nv71n-muted)}

.nv71n-hero{position:relative;max-width:1280px;margin:24px auto;padding:0 22px}
.nv71n-hero-card{position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--nv71n-border);box-shadow:var(--nv71n-shadow)}
.nv71n-hero-card img{width:100%;height:auto;display:block}
.nv71n-hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,#04110dd9);display:flex;align-items:flex-end;padding:34px}
.nv71n-hero-text h1{font-size:clamp(22px,3vw,38px);line-height:1.2;margin-bottom:10px;background:linear-gradient(120deg,#fff,#7afcff);-webkit-background-clip:text;background-clip:text;color:transparent}
.nv71n-hero-text p{color:var(--nv71n-muted);max-width:680px;font-size:14px}

.nv71n-crumb{max-width:1280px;margin:8px auto;padding:0 22px;color:var(--nv71n-muted);font-size:13px}
.nv71n-crumb ol{list-style:none;display:flex;gap:8px;flex-wrap:wrap}
.nv71n-crumb a{color:var(--nv71n-muted)}
.nv71n-crumb a:hover{color:var(--nv71n-text)}

.nv71n-section{max-width:1280px;margin:32px auto;padding:0 22px}
.nv71n-section h2{font-size:clamp(18px,2.2vw,26px);margin-bottom:6px;display:flex;align-items:center;gap:10px}
.nv71n-section h2::before{content:"";width:4px;height:22px;border-radius:2px;background:linear-gradient(180deg,var(--nv71n-accent),var(--nv71n-accent-2))}
.nv71n-section .nv71n-sub{color:var(--nv71n-muted);margin-bottom:20px;font-size:14px}

/* list: horizontal cards */
.nv71n-grid{display:grid;grid-template-columns:1fr;gap:14px}
.nv71n-card{display:grid;grid-template-columns:300px 1fr;gap:0;background:var(--nv71n-surface);border:1px solid var(--nv71n-border);border-radius:var(--nv71n-radius);overflow:hidden;transition:all var(--nv71n-trans)}
.nv71n-card:hover{transform:translateX(4px);border-color:#19e3a880;box-shadow:-6px 8px 24px -10px #19e3a866}
.nv71n-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.nv71n-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.nv71n-card:hover .nv71n-thumb img{transform:scale(1.05)}
.nv71n-mask{position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(0,0,0,.4));opacity:0;transition:opacity var(--nv71n-trans);display:flex;align-items:center;justify-content:center}
.nv71n-card:hover .nv71n-mask{opacity:1}
.nv71n-play{width:54px;height:54px;border-radius:50%;background:#19e3a8cc;display:flex;align-items:center;justify-content:center;transition:transform var(--nv71n-trans)}
.nv71n-card:hover .nv71n-play{transform:scale(1.08)}
.nv71n-play::before{content:"";border-style:solid;border-width:9px 0 9px 14px;border-color:transparent transparent transparent #fff;margin-left:3px}
.nv71n-meta{padding:18px 22px;display:flex;flex-direction:column;justify-content:center}
.nv71n-meta h3{font-size:17px;line-height:1.45;margin-bottom:8px;color:#fff}
.nv71n-meta p{font-size:13.5px;color:var(--nv71n-muted)}
.nv71n-tag{display:inline-block;font-size:11px;padding:2px 9px;border-radius:6px;background:#19e3a829;color:#7afcff;margin-bottom:8px;border:1px solid #19e3a855;align-self:flex-start}
@media (max-width:600px){.nv71n-card{grid-template-columns:1fr}}

.nv71n-reviews{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.nv71n-review{background:var(--nv71n-surface);border:1px solid var(--nv71n-border);border-radius:var(--nv71n-radius);padding:18px;backdrop-filter:blur(8px);position:relative}
.nv71n-review::before{content:"\201C";position:absolute;top:-6px;right:14px;font-size:54px;color:#19e3a866;line-height:1;font-family:Georgia,serif}
.nv71n-review .nv71n-stars{color:#ffce4d;font-size:14px;margin-bottom:8px}
.nv71n-review p{color:var(--nv71n-muted);font-size:13.5px;margin-bottom:10px}
.nv71n-review .nv71n-by{font-size:12px;color:#7afcff}

.nv71n-contact{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}
.nv71n-contact-card{background:var(--nv71n-surface);border:1px solid var(--nv71n-border);border-radius:var(--nv71n-radius);padding:22px;backdrop-filter:blur(8px)}
.nv71n-contact-card h3{font-size:16px;margin-bottom:12px;color:#fff}
.nv71n-contact-card ul{list-style:none}
.nv71n-contact-card li{padding:6px 0;font-size:14px;color:var(--nv71n-muted);display:flex;justify-content:space-between;border-bottom:1px dashed var(--nv71n-border)}
.nv71n-contact-card li:last-child{border:none}
.nv71n-contact-card li b{color:#fff;font-weight:500}

.nv71n-share{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}
.nv71n-share a{width:40px;height:40px;border-radius:50%;background:var(--nv71n-surface);border:1px solid var(--nv71n-border);display:flex;align-items:center;justify-content:center;transition:all var(--nv71n-trans)}
.nv71n-share a:hover{transform:translateY(-3px);background:var(--nv71n-accent);color:#fff}
.nv71n-share svg{width:18px;height:18px}

.nv71n-faq details{background:var(--nv71n-surface);border:1px solid var(--nv71n-border);border-radius:12px;padding:14px 18px;margin-bottom:10px;backdrop-filter:blur(8px);transition:all var(--nv71n-trans)}
.nv71n-faq details[open]{background:var(--nv71n-surface-2);border-color:#19e3a866}
.nv71n-faq summary{cursor:pointer;font-weight:500;list-style:none;display:flex;justify-content:space-between;align-items:center}
.nv71n-faq summary::-webkit-details-marker{display:none}
.nv71n-faq summary::after{content:"+";font-size:22px;color:var(--nv71n-accent-2);transition:transform var(--nv71n-trans)}
.nv71n-faq details[open] summary::after{content:"\2212"}
.nv71n-faq p{margin-top:10px;color:var(--nv71n-muted);font-size:14px;line-height:1.7}

.nv71n-footer{margin-top:60px;border-top:1px solid var(--nv71n-border);background:#04110d99;backdrop-filter:blur(10px);padding:36px 22px 22px}
.nv71n-footer-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.nv71n-footer h4{font-size:14px;margin-bottom:12px;color:#fff}
.nv71n-footer ul{list-style:none}
.nv71n-footer li{padding:4px 0;font-size:13px;color:var(--nv71n-muted)}
.nv71n-footer li a:hover{color:var(--nv71n-accent-2)}
.nv71n-copy{max-width:1280px;margin:24px auto 0;padding-top:18px;border-top:1px solid var(--nv71n-border);text-align:center;color:var(--nv71n-muted);font-size:12.5px}

@media (max-width:880px){
  .nv71n-nav{order:3;width:100%;justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
  .nv71n-search{flex:1}
  .nv71n-contact{grid-template-columns:1fr}
  .nv71n-footer-inner{grid-template-columns:1fr 1fr}
  .nv71n-hero-overlay{padding:18px}
}
@media (max-width:520px){
  .nv71n-footer-inner{grid-template-columns:1fr}
}