body { font-family: Arial, sans-serif; margin: 0; background: #f5f7fb; color: #222; }
.mobile-wrap { max-width: 640px; margin: 0 auto; padding: 16px; }
h1 { font-size: 22px; margin-bottom: 12px; }
.card { background: #fff; border-radius: 10px; padding: 14px; margin-bottom: 12px; box-shadow: 0 2px 8px rgba(0,0,0,.06); }
.btn { width: 100%; display: inline-block; border: 0; background: #1967d2; color: #fff; padding: 12px; border-radius: 8px; font-size: 16px; cursor: pointer; text-align: center; text-decoration: none; }
.btn.secondary { background: #0f9d58; margin-bottom: 12px; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.row { display: flex; gap: 8px; margin-top: 10px; }
.row input { flex: 1; border: 1px solid #ddd; border-radius: 8px; padding: 0 10px; font-size: 16px; }
.tip { color: #666; font-size: 13px; margin: 10px 0 0; }
.top-tip { margin-bottom: 10px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.grid img { width: 100%; border-radius: 8px; background: #eee; }
.img-item { background: #fff; border: 1px solid #eee; border-radius: 8px; padding: 6px; }
.img-label { font-size: 12px; color: #333; margin-top: 4px; }
.img-tip { font-size: 12px; color: #666; }
.ok { color: #0f9d58; }
.err { color: #c5221f; }
.warn { color: #b06000; }
.hidden { display: none; }

.video-card h2 { font-size: 18px; margin: 0 0 8px; }
.video-item { border: 1px solid #eee; border-radius: 8px; padding: 8px; margin: 10px 0; background: #fff; }
.video-item video { width: 100%; max-height: 420px; border-radius: 8px; background: #000; display: block; margin-bottom: 8px; }