:root { color-scheme: light; font-family: system-ui, "Microsoft YaHei", sans-serif; color: #1c293a; background: #f3f5f8; }
* { box-sizing: border-box; }
body { margin: 0; padding: 48px 20px; }
main { max-width: 660px; margin: auto; padding: 36px; background: white; border: 1px solid #e2e7ed; border-radius: 18px; }
.brand { font-size: 12px; font-weight: 750; letter-spacing: .14em; text-decoration: none; color: #31445b; }
.eyebrow { margin: 40px 0 8px; font-size: 13px; color: #476ad2; }
h1 { margin: 0; font-size: 30px; line-height: 1.3; overflow-wrap: anywhere; }
#description { color: #627084; line-height: 1.8; white-space: pre-wrap; overflow-wrap: anywhere; }
label { display: block; margin: 28px 0 10px; font-size: 14px; font-weight: 600; }
input[type=text], #name { width: 100%; padding: 13px; border: 1px solid #cdd5df; border-radius: 8px; font: inherit; }
.drop { position: relative; border: 1px dashed #8fa8d8; border-radius: 10px; background: #f6f8fd; padding: 32px 16px; text-align: center; cursor: pointer; }
.drop small { display: block; margin-top: 10px; color: #6d7889; font-weight: normal; line-height: 1.6; }
.drop input { display: block; max-width: 100%; margin: 20px auto 0; font: inherit; }
.drop.dragging { background: #e8efff; border-color: #315ed8; }
.muted, footer { color: #758092; font-size: 12px; line-height: 1.8; }
ul { padding: 0; list-style: none; }
li { padding: 14px 0; border-bottom: 1px solid #edf0f4; overflow-wrap: anywhere; }
li span { display: block; font-size: 14px; }
li small { display: block; color: #68778b; margin-top: 6px; }
progress { width: 100%; height: 5px; margin-top: 10px; accent-color: #315ed8; }
button { width: 100%; margin-top: 16px; padding: 14px; border: 0; border-radius: 8px; background: #315ed8; color: white; font: inherit; font-weight: 650; cursor: pointer; }
button:disabled { background: #b6c2da; cursor: default; }
:focus-visible { outline: 3px solid #9bbaff; outline-offset: 3px; }
#status { font-size: 14px; line-height: 1.7; }
.error { color: #b42d35 !important; }
.success { color: #19815e !important; }
footer { border-top: 1px solid #edf0f4; margin-top: 32px; padding-top: 18px; }
@media (max-width: 520px) { body { padding: 18px 12px; } main { padding: 24px 20px; } h1 { font-size: 26px; } }