:root{
  --bg:#0C1F27;
  --card:#0f2a34;
  --text:#e9f6f2;
  --muted:#b8d6cf;
  --accent:#36CE9A;
  --accent-2:#2ab384;
  --border: rgba(54,206,154,.25);
  --shadow: 0 20px 60px rgba(0,0,0,.35);
  --radius: 20px;
  --radius-sm: 14px;
  --max: 1100px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Helvetica Neue", "Noto Sans", "Liberation Sans", sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font);
  background: radial-gradient(1200px 600px at 20% -10%, rgba(54,206,154,.18), transparent 60%),
              radial-gradient(1000px 500px at 80% 0%, rgba(54,206,154,.10), transparent 55%),
              var(--bg);
  color:var(--text);
}
a{color:inherit}
.container{max-width:var(--max); margin:0 auto; padding:24px}
.topbar{
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:18px 22px;
  background: rgba(15,42,52,.72);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.brand{
  display:flex; align-items:center; gap:12px; font-weight:700;
}
.brand-dot{
  width:14px; height:14px; border-radius:50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(54,206,154,.12);
}
.nav a{
  text-decoration:none;
  padding:10px 14px;
  border-radius: 999px;
  border:1px solid transparent;
  color:var(--muted);
}
.nav a:hover{border-color:var(--border); color:var(--text)}
.grid{
  margin-top:22px;
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:18px;
}
.card{
  grid-column: span 12;
  background: rgba(15,42,52,.72);
  border:1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.card-pad{padding:22px}
.h1{font-size: 36px; margin:0 0 8px}
.p{margin:0; color:var(--muted); line-height:1.5}
.thumb-grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:14px;
  margin-top:18px;
}
.thumb{
  grid-column: span 12;
  border-radius: var(--radius);
  border:1px solid var(--border);
  overflow:hidden;
  background: rgba(12,31,39,.8);
  text-decoration:none;
  display:block;
}
@media(min-width:720px){ .thumb{grid-column: span 6} }
@media(min-width:1000px){ .thumb{grid-column: span 4} }

.thumb img{width:100%; display:block}
.thumb .meta{padding:14px 14px 16px}
.thumb .title{margin:0 0 6px; font-size:16px}
.thumb .desc{margin:0; color:var(--muted); font-size:13px; line-height:1.45}

.video-wrap{
  position:relative;
  width:100%;
  aspect-ratio: 16/9;
  background: #000;
  border-bottom:1px solid var(--border);
}
.video-wrap iframe{
  position:absolute; inset:0;
  width:100%; height:100%;
  border:0;
}
.actions{
  display:flex;
  flex-wrap: wrap;
  gap:12px;
  padding:18px 22px 10px;
  align-items:center;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding:12px 16px;
  border-radius:999px;
  border:1px solid rgba(54,206,154,.30);
  background: rgba(12,31,39,.55);
  color: var(--text);
  text-decoration:none;
  font-weight:600;
  cursor:pointer;
  user-select:none;
}
.btn:hover{background: rgba(54,206,154,.10)}
.btn.primary{
  background: rgba(54,206,154,.14);
  border-color: rgba(54,206,154,.50);
}
.btn.primary:hover{background: rgba(54,206,154,.18)}
.btn[disabled]{opacity:.55; cursor:not-allowed}
.hint{
  padding:0 22px 22px;
  color: var(--muted);
}
.code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  padding: 2px 8px;
  border:1px solid var(--border);
  border-radius: 8px;
  background: rgba(12,31,39,.55);
}
.comments{
  padding: 0 22px 22px;
  border-top:1px solid var(--border);
}
.comments h3{margin:18px 0 10px; font-size:18px}
.comment-form{
  display:grid;
  grid-template-columns: 1fr;
  gap:10px;
  margin: 10px 0 14px;
}
.field{
  width:100%;
  padding:12px 12px;
  border-radius: 14px;
  border:1px solid rgba(54,206,154,.25);
  background: rgba(12,31,39,.55);
  color: var(--text);
  outline:none;
}
.field:focus{border-color: rgba(54,206,154,.55)}
.comment-item{
  padding:12px 12px;
  border-radius: 14px;
  border:1px solid rgba(54,206,154,.18);
  background: rgba(12,31,39,.40);
  margin-bottom:10px;
}
.comment-head{
  display:flex; justify-content:space-between; gap:10px;
  color: var(--muted);
  font-size:12px;
  margin-bottom:6px;
}
.footer{
  margin-top:18px;
  padding:18px 22px;
  color: var(--muted);
  border:1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(15,42,52,.55);
}