:root { color-scheme: light; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; color: #17212f; background: #f3f6fa; }
.container { width: min(100% - 32px, 860px); margin: 0 auto; padding: 28px 0 56px; }
.hero { padding: 20px 0 12px; }
.hero h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); margin: 8px 0 12px; }
.hero p { line-height: 1.65; color: #526579; }
.eyebrow { margin: 0; color: #1469c2 !important; font-weight: 700; letter-spacing: .05em; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 16px 0; }
.feature, .card { display: block; background: #fff; border: 1px solid #dce5ef; border-radius: 14px; padding: 24px; box-shadow: 0 4px 20px rgb(22 46 73 / 4%); }
.feature { color: inherit; text-decoration: none; transition: border-color .15s, transform .15s; }
.feature:hover, .feature:focus-visible { border-color: #1469c2; transform: translateY(-2px); }
.feature h2, .card h2 { margin: 10px 0; font-size: 1.25rem; }
.feature p, .card p, .hint { color: #526579; line-height: 1.6; }
.feature-icon { color: #1469c2; font-size: 1.6rem; }
.feature-link, a { color: #1469c2; font-weight: 650; }
.feature-link { display: inline-block; margin-top: 10px; }
.note { margin-top: 16px; }
.back { display: inline-block; margin-bottom: 12px; text-decoration: none; }
label { display: block; font-weight: 650; margin: 16px 0 8px; }
input, select { display: block; width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #9eacbd; border-radius: 8px; background: #fff; color: #17212f; font: inherit; }
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid #93c6ff; outline-offset: 2px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0; }
button { min-height: 44px; border: 0; border-radius: 8px; padding: 10px 16px; background: #1469c2; color: #fff; font: inherit; font-weight: 650; cursor: pointer; }
button.secondary { background: #526579; }
button:disabled { opacity: .55; cursor: not-allowed; }
.preview { width: 100%; aspect-ratio: 16 / 9; min-height: 180px; background: #101820; border-radius: 8px; overflow: hidden; }
.preview video { width: 100%; height: 100%; object-fit: contain; }
.status { min-height: 3em; padding: 12px; background: #eaf2fb; border-radius: 8px; white-space: pre-wrap; line-height: 1.5; }
@media (max-width: 600px) { .container { width: min(100% - 24px, 860px); padding-top: 16px; } .grid { grid-template-columns: 1fr; } .feature, .card { padding: 18px; } .actions button { flex: 1 1 100%; } }