:root { --ink: #16202e; --muted: #5b6676; --line: #d9dee6; --brand: #1f5eff; --bg: #f6f7f9; --ok: #12805c; --bad: #b3261e; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 "Segoe UI", system-ui, -apple-system, Arial, sans-serif; color: var(--ink); background: var(--bg); }
header, main, footer, #error { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header { display: flex; gap: 12px; align-items: center; padding-top: 28px; }
h1 { font-size: 20px; margin: 0; } h2 { font-size: 22px; margin: 0 0 8px; } h3 { font-size: 17px; margin: 24px 0 4px; }
#version, .note, footer { color: var(--muted); font-size: 13px; margin: 0; }
main > section { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 24px; margin: 20px 0; }
label { display: block; font-weight: 600; margin: 16px 0 4px; }
input { width: 100%; padding: 10px 12px; font: inherit; border: 1px solid var(--line); border-radius: 6px; }
button { margin: 16px 8px 0 0; padding: 10px 18px; font: inherit; font-weight: 600; color: #fff; background: var(--brand); border: 0; border-radius: 6px; cursor: pointer; }
button:disabled { opacity: .55; cursor: default; }
button.quiet { color: var(--brand); background: transparent; padding-left: 0; }
details { margin-top: 20px; color: var(--muted); } summary { cursor: pointer; }
#error { color: var(--bad); background: #fdecea; border: 1px solid #f3c4c0; border-radius: 8px; padding: 12px 16px; margin-top: 16px; }
ol#steps { list-style: none; padding: 0; margin: 12px 0 0; }
ol#steps li { padding: 10px 0 10px 30px; border-top: 1px solid var(--line); position: relative; }
ol#steps li::before { content: "○"; position: absolute; left: 4px; color: var(--muted); }
ol#steps li.busy::before { content: "…"; color: var(--brand); }
ol#steps li.done::before { content: "✓"; color: var(--ok); }
ol#steps li.failed::before { content: "!"; color: var(--bad); font-weight: 700; }
ol#steps li .note { display: block; }
footer { padding-bottom: 32px; } a { color: var(--brand); }