.ortsd {
  --ortsd-ink: #1d2b33;
  --ortsd-teal: #3b868d;
  --ortsd-teal-d: #2a6a70;
  --ortsd-orange: #ec8132;
  --ortsd-line: #c9d8e3;
  --ortsd-frame: #2a6a70;
  --ortsd-peer: #eaf4f5;
  --ortsd-same: #cde6e8;
  --ortsd-sel: #fde1c7;
  --ortsd-bad: #c62828;
  --ortsd-bad-bg: #fdecec;
  container-type: inline-size;
  position: relative;
  margin: 0 0 28px;
  padding: 18px 16px 16px;
  border: 1px solid #c0d8f5;
  border-top: 4px solid var(--ortsd-teal);
  background: #fff;
  color: var(--ortsd-ink);
  font-size: 14px;
  line-height: 1.35;
  text-align: left;
}
.ortsd *, .ortsd *::before, .ortsd *::after { box-sizing: border-box; }

/* скидання стилів теми для кнопок і посилань усередині гри */
.ortsd button {
  -webkit-appearance: none;
  appearance: none;
  margin: 0;
  padding: 0;
  width: auto;
  min-width: 0;
  height: auto;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  color: inherit;
  font: inherit;
  letter-spacing: normal;
  text-transform: none;
  text-shadow: none;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease;
}
.ortsd button:focus { outline: none; }
.ortsd button:focus-visible,
.ortsd a:focus-visible { outline: 3px solid var(--ortsd-orange); outline-offset: 2px; position: relative; z-index: 2; }

.ortsd .ortsd-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 0 0 12px; }
.ortsd .ortsd-title { margin: 0; padding: 0; font-size: 22px; font-weight: 700; line-height: 1.15; color: var(--ortsd-teal-d); }
.ortsd .ortsd-full {
  flex: none;
  min-height: 36px;
  padding: 6px 10px;
  border: 1px solid var(--ortsd-line);
  font-size: 13px;
  font-weight: 600;
  color: var(--ortsd-teal-d);
}
.ortsd .ortsd-full:hover { background: var(--ortsd-peer); }

.ortsd .ortsd-levels { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; margin: 0 0 10px; }
.ortsd .ortsd-levels button {
  min-height: 40px;
  padding: 6px 4px;
  border: 1px solid var(--ortsd-line);
  background: #fff;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
}
.ortsd .ortsd-levels button:hover { background: var(--ortsd-peer); }
.ortsd .ortsd-levels button[aria-pressed="true"] { background: var(--ortsd-teal-d); border-color: var(--ortsd-teal-d); color: #fff; }

.ortsd .ortsd-meta { display: flex; justify-content: space-between; gap: 8px; margin: 0 0 8px; font-size: 13px; color: #5b6870; }
.ortsd .ortsd-meta b { color: var(--ortsd-ink); font-variant-numeric: tabular-nums; }

/* поле */
.ortsd .ortsd-board-wrap { width: 100%; margin: 0 auto 10px; }
.ortsd .ortsd-board {
  container-type: inline-size;
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  width: 100%;
  border: 2px solid var(--ortsd-frame);
  background: #fff;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}
.ortsd .ortsd-row { display: contents; }
.ortsd .ortsd-board .ortsd-cell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  min-height: 0;
  border-right: 1px solid var(--ortsd-line);
  border-bottom: 1px solid var(--ortsd-line);
  background: #fff;
  font-size: 16px;
  font-size: 6.4cqw;
  font-weight: 500;
  line-height: 1;
  color: var(--ortsd-teal-d);
}
.ortsd .ortsd-board .ortsd-cell.ortsd-br { border-right: 2px solid var(--ortsd-frame); }
.ortsd .ortsd-board .ortsd-cell.ortsd-bb { border-bottom: 2px solid var(--ortsd-frame); }
.ortsd .ortsd-row > .ortsd-cell:last-child { border-right: 0; }
.ortsd .ortsd-row:last-child > .ortsd-cell { border-bottom: 0; }
.ortsd .ortsd-board .ortsd-cell.is-given { color: var(--ortsd-ink); font-weight: 700; }
.ortsd .ortsd-board .ortsd-cell.is-peer { background: var(--ortsd-peer); }
.ortsd .ortsd-board .ortsd-cell.is-same { background: var(--ortsd-same); }
.ortsd .ortsd-board .ortsd-cell.is-sel { background: var(--ortsd-sel); }
.ortsd .ortsd-board .ortsd-cell.is-wrong { color: var(--ortsd-bad); background: var(--ortsd-bad-bg); }
.ortsd .ortsd-board .ortsd-cell.is-wrong.is-sel { background: #f9cfcf; }
.ortsd .ortsd-board .ortsd-cell:focus-visible { outline-offset: -3px; }
.ortsd .ortsd-v { pointer-events: none; }
.ortsd .ortsd-n {
  position: absolute;
  inset: 1px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  pointer-events: none;
  font-size: 8px;
  font-size: 2.5cqw;
  font-weight: 500;
  line-height: 1;
  color: #5b6870;
}
.ortsd .ortsd-n i { display: flex; align-items: center; justify-content: center; font-style: normal; }

/* цифри */
.ortsd .ortsd-pad { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 5px; margin: 0 0 8px; }
.ortsd .ortsd-key {
  min-height: 44px;
  border: 1px solid var(--ortsd-line);
  background: #fff;
  font-size: 20px;
  font-weight: 600;
  text-align: center;
  color: var(--ortsd-teal-d);
}
.ortsd .ortsd-key:hover { background: var(--ortsd-peer); }
.ortsd .ortsd-key:active { background: var(--ortsd-same); }
.ortsd .ortsd-key.is-full { color: #9aa7ae; background: #f6f8fa; }
.ortsd .ortsd-key-del { font-size: 18px; color: var(--ortsd-ink); }

.ortsd .ortsd-tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px; margin: 0 0 8px; }
.ortsd .ortsd-tools button {
  min-height: 40px;
  padding: 6px 4px;
  border: 1px solid var(--ortsd-line);
  background: #fff;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
}
.ortsd .ortsd-tools button:hover { background: var(--ortsd-peer); }
.ortsd .ortsd-tools button[aria-pressed="true"] { background: var(--ortsd-orange); border-color: var(--ortsd-orange); color: #1d2b33; }
.ortsd .ortsd-tools .ortsd-new { background: var(--ortsd-teal-d); border-color: var(--ortsd-teal-d); color: #fff; }
.ortsd .ortsd-tools .ortsd-new:hover { background: var(--ortsd-ink); }

.ortsd .ortsd-status { min-height: 2.7em; margin: 0 0 6px; padding: 0; font-size: 13px; color: #4a575e; }
.ortsd.is-done .ortsd-status { color: var(--ortsd-teal-d); font-weight: 700; font-size: 14px; }
.ortsd.is-done .ortsd-board { border-color: var(--ortsd-orange); }
.ortsd.is-busy .ortsd-board { opacity: .45; }
.ortsd .ortsd-guide { display: block; padding: 4px 0; font-size: 13px; font-weight: 600; color: var(--ortsd-teal-d); text-decoration: underline; text-underline-offset: 2px; }
.ortsd .ortsd-guide[hidden] { display: none; }
.ortsd .ortsd-guide:hover { color: var(--ortsd-ink); }

/* ширший блок (головна, контент) */
@container (min-width: 340px) {
  .ortsd .ortsd-levels { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .ortsd .ortsd-tools { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@container (min-width: 560px) {
  .ortsd .ortsd-pad { grid-template-columns: repeat(10, minmax(0, 1fr)); }
}

/* на весь екран */
html.ortsd-lock, html.ortsd-lock body { overflow: hidden; }
.ortsd.is-full {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  margin: 0;
  padding: 12px 16px 20px;
  border: 0;
  background: #f6f8fa;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.ortsd.is-full > * { max-width: 560px; margin-left: auto; margin-right: auto; }
.ortsd.is-full .ortsd-board-wrap { max-width: min(560px, calc(100dvh - 330px)); min-width: 260px; }
.ortsd.is-full .ortsd-full { background: var(--ortsd-teal-d); border-color: var(--ortsd-teal-d); color: #fff; }
@media (max-width: 480px) {
  .ortsd.is-full { padding: 8px 10px 16px; }
  .ortsd.is-full .ortsd-head { margin-bottom: 8px; }
  .ortsd.is-full .ortsd-board-wrap { max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .ortsd button { transition: none; }
}