/* t557h — domain-scoped modern UI · layout=ranking */
:root{
  --t557h-bg:#070b1a; --t557h-bg2:#0c1430;
  --t557h-surface:rgba(255,255,255,.05); --t557h-surface-2:rgba(255,255,255,.10);
  --t557h-border:rgba(255,255,255,.12);
  --t557h-text:#eaf0ff; --t557h-muted:#8aa1c9;
  --t557h-accent:#3d7eff; --t557h-accent-2:#19c3ff;
  --t557h-radius:16px;
  --t557h-shadow:0 18px 50px -18px #3d7eff66;
  --t557h-trans:.3s cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--t557h-bg);color:var(--t557h-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%,#3d7eff33,transparent 55%),radial-gradient(900px 500px at 100% 0%,#19c3ff29,transparent 55%),var(--t557h-bg)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t557h-trans)}
a:hover{color:var(--t557h-accent-2)}

.t557h-header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);background:#070b1ab3;border-bottom:1px solid var(--t557h-border)}
.t557h-nav-wrap{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:22px;padding:14px 22px}
.t557h-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.4px;flex-shrink:0}
.t557h-logo svg{width:38px;height:38px;filter:drop-shadow(0 0 10px #3d7eff99)}
.t557h-nav{display:flex;gap:4px;flex:1;flex-wrap:wrap;justify-content:center}
.t557h-nav a{padding:8px 14px;border-radius:10px;font-size:14px;color:var(--t557h-muted);transition:all var(--t557h-trans);position:relative}
.t557h-nav a:hover,.t557h-nav a.t557h-active{color:#fff;background:var(--t557h-surface)}
.t557h-nav a.t557h-active::after{content:"";position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--t557h-accent),var(--t557h-accent-2))}
.t557h-search{flex:0 0 240px;position:relative}
.t557h-search input{width:100%;padding:10px 14px 10px 38px;border-radius:999px;border:1px solid var(--t557h-border);background:var(--t557h-surface);color:#fff;outline:none;transition:all var(--t557h-trans);font-size:14px}
.t557h-search input::placeholder{color:var(--t557h-muted)}
.t557h-search input:focus{border-color:var(--t557h-accent);background:var(--t557h-surface-2);box-shadow:0 0 0 3px #3d7eff33}
.t557h-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--t557h-muted)}

.t557h-hero{position:relative;max-width:1280px;margin:24px auto;padding:0 22px}
.t557h-hero-card{position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--t557h-border);box-shadow:var(--t557h-shadow)}
.t557h-hero-card img{width:100%;height:auto;display:block}
.t557h-hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,#070b1ad9);display:flex;align-items:flex-end;padding:34px}
.t557h-hero-text h1{font-size:clamp(22px,3vw,38px);line-height:1.2;margin-bottom:10px;background:linear-gradient(120deg,#fff,#19c3ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.t557h-hero-text p{color:var(--t557h-muted);max-width:680px;font-size:14px}

.t557h-crumb{max-width:1280px;margin:8px auto;padding:0 22px;color:var(--t557h-muted);font-size:13px}
.t557h-crumb ol{list-style:none;display:flex;gap:8px;flex-wrap:wrap}
.t557h-crumb a{color:var(--t557h-muted)}
.t557h-crumb a:hover{color:var(--t557h-text)}

.t557h-section{max-width:1280px;margin:32px auto;padding:0 22px}
.t557h-section h2{font-size:clamp(18px,2.2vw,26px);margin-bottom:6px;display:flex;align-items:center;gap:10px}
.t557h-section h2::before{content:"";width:4px;height:22px;border-radius:2px;background:linear-gradient(180deg,var(--t557h-accent),var(--t557h-accent-2))}
.t557h-section .t557h-sub{color:var(--t557h-muted);margin-bottom:20px;font-size:14px}

/* ranking: numbered grid */
.t557h-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;counter-reset:t557hrank}
.t557h-card{position:relative;background:var(--t557h-surface);border:1px solid var(--t557h-border);border-radius:var(--t557h-radius);overflow:hidden;transition:all var(--t557h-trans);counter-increment:t557hrank}
.t557h-card::before{content:counter(t557hrank,decimal-leading-zero);position:absolute;top:10px;left:10px;z-index:2;width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--t557h-accent),var(--t557h-accent-2));color:#fff;font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;letter-spacing:.5px;box-shadow:0 6px 18px -6px #3d7eff99}
.t557h-card:hover{transform:translateY(-6px);border-color:#3d7eff80;box-shadow:0 18px 40px -14px #3d7eff80}
.t557h-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.t557h-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.t557h-card:hover .t557h-thumb img{transform:scale(1.06)}
.t557h-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 30%,rgba(0,0,0,.55));opacity:0;transition:opacity var(--t557h-trans);display:flex;align-items:center;justify-content:center}
.t557h-card:hover .t557h-mask{opacity:1}
.t557h-play{width:60px;height:60px;border-radius:50%;background:rgba(255,255,255,.18);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.35)}
.t557h-play::before{content:"";border-style:solid;border-width:10px 0 10px 16px;border-color:transparent transparent transparent #fff;margin-left:4px}
.t557h-meta{padding:14px 16px}
.t557h-meta h3{font-size:15px;line-height:1.45;margin-bottom:6px;color:#fff;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.t557h-meta p{font-size:12.5px;color:var(--t557h-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.t557h-tag{display:inline-block;font-size:11px;padding:2px 9px;border-radius:999px;background:#3d7eff29;color:#19c3ff;margin-bottom:8px;border:1px solid #3d7eff55}

.t557h-reviews{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.t557h-review{background:var(--t557h-surface);border:1px solid var(--t557h-border);border-radius:var(--t557h-radius);padding:18px;backdrop-filter:blur(8px);position:relative}
.t557h-review::before{content:"\201C";position:absolute;top:-6px;right:14px;font-size:54px;color:#3d7eff66;line-height:1;font-family:Georgia,serif}
.t557h-review .t557h-stars{color:#ffce4d;font-size:14px;margin-bottom:8px}
.t557h-review p{color:var(--t557h-muted);font-size:13.5px;margin-bottom:10px}
.t557h-review .t557h-by{font-size:12px;color:#19c3ff}

.t557h-contact{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}
.t557h-contact-card{background:var(--t557h-surface);border:1px solid var(--t557h-border);border-radius:var(--t557h-radius);padding:22px;backdrop-filter:blur(8px)}
.t557h-contact-card h3{font-size:16px;margin-bottom:12px;color:#fff}
.t557h-contact-card ul{list-style:none}
.t557h-contact-card li{padding:6px 0;font-size:14px;color:var(--t557h-muted);display:flex;justify-content:space-between;border-bottom:1px dashed var(--t557h-border)}
.t557h-contact-card li:last-child{border:none}
.t557h-contact-card li b{color:#fff;font-weight:500}

.t557h-share{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}
.t557h-share a{width:40px;height:40px;border-radius:50%;background:var(--t557h-surface);border:1px solid var(--t557h-border);display:flex;align-items:center;justify-content:center;transition:all var(--t557h-trans)}
.t557h-share a:hover{transform:translateY(-3px);background:var(--t557h-accent);color:#fff}
.t557h-share svg{width:18px;height:18px}

.t557h-faq details{background:var(--t557h-surface);border:1px solid var(--t557h-border);border-radius:12px;padding:14px 18px;margin-bottom:10px;backdrop-filter:blur(8px);transition:all var(--t557h-trans)}
.t557h-faq details[open]{background:var(--t557h-surface-2);border-color:#3d7eff66}
.t557h-faq summary{cursor:pointer;font-weight:500;list-style:none;display:flex;justify-content:space-between;align-items:center}
.t557h-faq summary::-webkit-details-marker{display:none}
.t557h-faq summary::after{content:"+";font-size:22px;color:var(--t557h-accent-2);transition:transform var(--t557h-trans)}
.t557h-faq details[open] summary::after{content:"\2212"}
.t557h-faq p{margin-top:10px;color:var(--t557h-muted);font-size:14px;line-height:1.7}

.t557h-footer{margin-top:60px;border-top:1px solid var(--t557h-border);background:#070b1a99;backdrop-filter:blur(10px);padding:36px 22px 22px}
.t557h-footer-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.t557h-footer h4{font-size:14px;margin-bottom:12px;color:#fff}
.t557h-footer ul{list-style:none}
.t557h-footer li{padding:4px 0;font-size:13px;color:var(--t557h-muted)}
.t557h-footer li a:hover{color:var(--t557h-accent-2)}
.t557h-copy{max-width:1280px;margin:24px auto 0;padding-top:18px;border-top:1px solid var(--t557h-border);text-align:center;color:var(--t557h-muted);font-size:12.5px}

@media (max-width:880px){
  .t557h-nav{order:3;width:100%;justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
  .t557h-search{flex:1}
  .t557h-contact{grid-template-columns:1fr}
  .t557h-footer-inner{grid-template-columns:1fr 1fr}
  .t557h-hero-overlay{padding:18px}
}
@media (max-width:520px){
  .t557h-footer-inner{grid-template-columns:1fr}
}