:root {
  --primary: #009fdb;
  --primary-dark: #0086ba;
  --accent: #00c4ff;
  --ink: #313131;
  --muted: #6b7780;
  --border: #d5dde3;
  --surface: #ffffff;
  --background: #f3f6f8;
  --tint: #e6f6fc;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font: 16px/1.55 "Questrial", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}
.top {
  background: var(--surface);
  border-bottom: 3px solid var(--primary);
  padding: 18px 24px;
}
.top img { display: block; height: 40px; width: auto; }
main { max-width: 820px; margin: 0 auto; padding: 28px 20px 8px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 26px;
  margin-bottom: 20px;
}
.card.narrow { max-width: 440px; margin: 40px auto; }
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
h1 { font-size: 1.55rem; line-height: 1.25; margin: 0 0 6px; }
h2 { font-size: 1.15rem; margin: 0 0 8px; color: var(--primary-dark); }
h3 { font-size: 1rem; margin: 16px 0 4px; }
p { margin: 0 0 10px; }
.lead { color: var(--muted); margin-bottom: 16px; }
.note { color: var(--muted); font-size: 0.9rem; margin: 14px 0 0; }
.error { color: #b3261e; background: #fdecea; border-radius: 6px; padding: 8px 12px; }
label { display: block; font-weight: 600; margin-bottom: 6px; }
input[type="password"] {
  width: 100%;
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 16px;
}
input[type="password"]:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--primary); }
.primary {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  border: 0;
  border-radius: 6px;
  padding: 10px 22px;
  cursor: pointer;
  white-space: nowrap;
}
.primary:hover, .primary:focus-visible { background: var(--primary-dark); }
.link { background: none; border: 0; padding: 4px 0; font: inherit; color: var(--primary-dark); cursor: pointer; text-decoration: underline; }
.files { list-style: none; margin: 0; padding: 0; }
.file {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--border);
  padding: 16px 0;
}
.file:first-child { border-top: 0; padding-top: 4px; }
.file h3 { margin: 0 0 2px; }
.file-main { min-width: 0; }
.meta { color: var(--muted); font-size: 0.92rem; margin: 0 0 4px; overflow-wrap: anywhere; }
.hash { font-size: 0.8rem; color: var(--muted); margin: 0; overflow-wrap: anywhere; }
.hash span { font-weight: 600; }
code { font-family: ui-monospace, "SF Mono", Consolas, monospace; font-size: 0.92em; background: var(--background); padding: 1px 5px; border-radius: 4px; }
ol { margin: 0 0 10px; padding-left: 22px; }
li { margin-bottom: 4px; }
.foot { text-align: center; color: var(--muted); font-size: 0.85rem; padding: 12px 20px 32px; }
.foot a { color: var(--primary-dark); }
@media (max-width: 560px) {
  .file { flex-direction: column; align-items: stretch; }
  .file .button { text-align: center; }
  .card { padding: 20px 18px; }
}