*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  background: #f8f6f0;
  color: #172339;
  font: 15px/1.6 Inter, system-ui, sans-serif;
}
[hidden] { display: none !important; }
.hero { padding: clamp(38px, 7vw, 80px) 20px; text-align: center; }
.hero h1 { margin: 14px auto; font-size: clamp(2.25rem, 6vw, 4rem); }
.hero-sub { max-width: 52ch; margin: 0 auto; font-size: clamp(1rem, 2.4vw, 1.2rem); }
.hero-label {
  display: inline-block;
  border-radius: 999px;
  padding: 4px 12px;
  font-size: .75rem;
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.split-wrap { width: min(100% - 32px, 720px); margin: clamp(24px, 5vw, 48px) auto 0; }
.split-card {
  background: #fff;
  border: 1px solid #dbe3ec;
  border-radius: 22px;
  padding: clamp(16px, 5vw, 36px);
  box-shadow: 0 12px 35px #183a6410;
}
.split-card h2, .split-faq h2 { margin: 0; font-size: 1.5rem; line-height: 1.25; }
.split-muted { margin: 4px 0 16px; color: #47586e; }
.split-drop {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 5px;
  padding: 22px 12px;
  border: 1px dashed #7d9cbc;
  border-radius: 14px;
  background: #f3f8fe;
  color: #3d5571;
  text-align: center;
  overflow-wrap: anywhere;
  cursor: pointer;
}
.split-drop:hover, .split-drop.is-dragover { background: #e3effd; }
.split-drop svg { width: 29px; height: 29px; }
.split-drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.split-drop:focus-within { outline: 2px solid #225f9c; outline-offset: 3px; }
.split-pick { color: #1d5489; font-weight: 750; }
.split-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  margin: 22px 0 16px;
  border: 0;
  min-width: 0;
}
.split-options legend { margin-bottom: 8px; padding: 0; font-weight: 700; }
.split-mode {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 11px;
  border: 1px solid #dbe3ec;
  border-radius: 12px;
  cursor: pointer;
}
.split-mode:has(input:checked) { border-color: #3572ac; background: #f3f8fe; }
.split-mode input { margin: 5px 0 0; accent-color: #225f9c; flex: 0 0 auto; }
.split-mode small { display: block; color: #47586e; line-height: 1.5; }
.split-count { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin: 0 0 16px; }
.split-count input {
  width: 90px;
  padding: 8px;
  border: 1px solid #849db6;
  border-radius: 8px;
  font: inherit;
  color: inherit;
}
.split-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.split-actions > button { min-height: 44px; }
.split-primary, .split-download, .split-reset {
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  background: #225f9c;
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.split-primary:hover, .split-download:hover { background: #1a497a; }
.split-reset {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: #fff;
  color: #225f9c;
  box-shadow: inset 0 0 0 1px #849db6;
}
.split-reset:not(:disabled):hover { background: #edf5ff; }
.split-reset:focus-visible { outline: 2px solid #225f9c; outline-offset: 3px; }
.split-primary:disabled, .split-reset:disabled { opacity: .55; cursor: default; }
.split-status { margin: 10px 0 0; color: #47586e; overflow-wrap: anywhere; }
.split-status:empty { margin: 0; }
.split-status.is-error { color: #a12620; }
.split-results { margin-top: 20px; border-top: 1px solid #dbe3ec; }
.split-results h3 { margin: 16px 0 8px; }
.split-results ul { margin: 0; padding: 0; list-style: none; }
.split-results li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid #dbe3ec;
}
.split-result-name { min-width: 0; overflow-wrap: anywhere; }
.split-result-name small { display: block; color: #47586e; }
.split-download { flex: 0 0 auto; }
.split-faq { margin-top: 28px; }
.split-faq details { padding: 12px 0; border-bottom: 1px solid #dbe3ec; }
.split-faq summary { font-weight: 650; cursor: pointer; }
.split-faq p { margin: 8px 0 0; color: #47586e; }
@media (max-width: 480px) {
  .split-options { grid-template-columns: 1fr; }
}