:root {
  --bg: #090c10;
  --surface: #111720;
  --surface2: #161e29;
  --border: #1e2d3d;
  --border2: #243346;
  --text: #e4eaf4;
  --muted: #7a8a9e;
  --subtle: #3d4f63;
  --accent: #c9a227;
  --accent-dim: rgba(201,162,39,0.12);
  --green: #2dd4a3;
  --green-dim: rgba(45,212,163,0.10);
  --radius: 14px;
  --radius-sm: 9px;
  --max: 720px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Manrope", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
.tool-header {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}
.tool-header-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
}
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
}
.logo-mark span {
  border-radius: 3px;
  background: var(--subtle);
  animation: logoCellPulse 2.8s ease-in-out infinite;
}
.logo-mark span:nth-child(5) {
  background: var(--accent);
  animation: logoHotPulse 2s ease-in-out infinite;
}
.logo-mark span:nth-child(2) { animation-delay: 0.15s; }
.logo-mark span:nth-child(3) { animation-delay: 0.3s; }
.logo-mark span:nth-child(4) { animation-delay: 0.45s; }
.logo-mark span:nth-child(6) { animation-delay: 0.6s; }
.logo-mark span:nth-child(7) { animation-delay: 0.75s; }
.logo-mark span:nth-child(8) { animation-delay: 0.9s; }
.logo-mark span:nth-child(9) { animation-delay: 1.05s; }
@keyframes logoCellPulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 0.9; } }
@keyframes logoHotPulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 1; transform: scale(1.12); } }
.logo-text { font-size: 1.05rem; font-weight: 800; letter-spacing: -0.04em; color: var(--text); }
.logo-text em { color: var(--accent); font-style: normal; }
@media (prefers-reduced-motion: reduce) {
  .logo-mark span { animation: none !important; opacity: 1 !important; transform: none !important; }
}
.tool-back { font-size: 0.85rem; color: var(--muted); }
.tool-unit-row { margin-bottom: 0.85rem; }
.tool-unit-row .tool-select { margin-bottom: 0; }
.tool-section-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  margin: 1rem 0 0.5rem;
}
.tool-section-label:first-of-type { margin-top: 0; }
h1 { font-size: 1.65rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 0.5rem; }
.tool-lead { color: var(--muted); font-size: 0.95rem; margin-bottom: 1.25rem; }
.tool-hero {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 1.35rem;
  display: block;
  background: var(--surface);
}
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  margin-bottom: 1.5rem;
}
.tool-label { display: block; font-size: 0.78rem; font-weight: 600; color: var(--muted); margin-bottom: 0.35rem; }
.tool-input, .tool-select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  margin-bottom: 0.85rem;
}
.tool-input:focus, .tool-select:focus { outline: none; border-color: var(--accent); }
.tool-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
@media (max-width: 480px) { .tool-row { grid-template-columns: 1fr; } }
.tool-tabs { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 1rem; }
.tool-tab {
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}
.tool-tab.is-active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.tool-result {
  background: var(--green-dim);
  border: 1px solid rgba(45,212,163,0.25);
  border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
  margin-top: 0.5rem;
}
.tool-result-label { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.tool-result-value { font-size: 1.45rem; font-weight: 800; color: var(--green); margin-top: 0.2rem; }
.tool-result-sub { font-size: 0.85rem; color: var(--muted); margin-top: 0.35rem; }
.tool-result.is-empty {
  background: var(--surface2);
  border-color: var(--border);
}
.tool-result.is-empty .tool-result-value {
  color: var(--muted);
  font-size: 1.2rem;
  font-weight: 600;
}
.tool-cta {
  background: linear-gradient(145deg, #131c27, #0e1520);
  border: 1px solid rgba(201,162,39,0.25);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  margin: 2rem 0;
}
.tool-cta h2 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.tool-cta p { font-size: 0.88rem; color: var(--muted); margin-bottom: 0.85rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.55rem 1.1rem; border-radius: var(--radius-sm);
  font-weight: 700; font-size: 0.875rem; font-family: inherit;
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
}
.btn-primary { background: var(--accent); color: #110e00; }
.btn-primary:hover { filter: brightness(1.08); text-decoration: none; }
.tool-seo { font-size: 0.84rem; color: var(--muted); line-height: 1.65; margin-bottom: 2rem; }
.tool-seo h2 { font-size: 1rem; color: var(--text); margin: 1.25rem 0 0.5rem; }
.tool-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  margin-top: 0.85rem;
}
@media (min-width: 560px) {
  .tool-stats { grid-template-columns: repeat(4, 1fr); }
}
.tool-stat {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.7rem;
}
.tool-stat-k {
  display: block;
  font-size: 0.68rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.tool-stat-v {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
}
.tool-disclaimer {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.55;
  margin: 1rem 0 0;
  padding: 0.75rem 0.9rem;
  border-left: 3px solid rgba(201, 162, 39, 0.45);
  background: var(--surface2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.tool-snow-details {
  margin-top: 1rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.tool-snow-details summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.kp-snow-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  margin-top: 0.35rem;
}
.kp-snow-table th,
.kp-snow-table td {
  border: 1px solid var(--border);
  padding: 0.35rem 0.5rem;
  text-align: left;
}
.kp-snow-table th {
  background: var(--surface2);
  color: var(--muted);
  font-weight: 600;
}
.kp-snow-table tr.is-on td {
  background: var(--green-dim);
  color: var(--text);
  font-weight: 700;
}
.tool-hint-bar {
  font-size: 0.84rem;
  color: var(--muted);
  margin-bottom: 1rem;
  padding: 0.65rem 0.85rem;
  background: var(--surface2);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  line-height: 1.55;
}
.tool-howto {
  margin: 1.5rem 0 2rem;
  padding: 1.1rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}
.tool-howto h2 {
  font-size: 0.95rem;
  color: var(--text);
  margin: 0 0 0.75rem;
}
.tool-howto h3 {
  font-size: 0.88rem;
  color: var(--text);
  margin: 1rem 0 0.4rem;
}
.tool-howto h3:first-of-type { margin-top: 0; }
.tool-howto ol {
  margin: 0;
  padding-left: 1.35rem;
}
.tool-howto li { margin: 0.35rem 0; }
.tool-howto li::marker { color: var(--accent); font-weight: 700; }
.tool-howto strong { color: var(--text); font-weight: 600; }
.tool-footer { padding: 1.5rem 0 2rem; border-top: 1px solid var(--border); font-size: 0.78rem; color: var(--subtle); }
.tool-legal-note { margin-top: 0.55rem; font-size: 0.72rem; line-height: 1.45; color: var(--subtle); max-width: 36rem; }
.tool-legal-note a { color: var(--accent); text-decoration: none; }
.tool-legal-note a:hover { text-decoration: underline; }
.tool-links { display: flex; flex-wrap: wrap; gap: 0.75rem 1.25rem; margin-top: 0.5rem; }

/* Basic calculator grid */
.calc-display {
  width: 100%;
  padding: 0.85rem 1rem;
  text-align: right;
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  min-height: 3rem;
  word-break: break-all;
}
.calc-display.is-empty { color: var(--muted); font-weight: 600; }
.calc-expr {
  min-height: 1.25rem;
  font-size: 0.78rem;
  color: var(--subtle);
  text-align: right;
  margin-bottom: 0.35rem;
  word-break: break-all;
}
.calc-keys {
  display: grid;
  gap: 0.45rem;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.calc-keys--simple { grid-template-columns: repeat(4, 1fr); }
.calc-keys--eng { grid-template-columns: repeat(5, 1fr); }
.calc-keys[hidden] { display: none; }
.calc-key {
  min-height: 3rem;
  padding: 0.65rem 0.35rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-family: inherit;
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.calc-keys--eng .calc-key { font-size: 0.92rem; min-height: 2.75rem; }
.calc-key:hover { border-color: var(--accent); }
.calc-key:active { transform: scale(0.97); }
.calc-key.op {
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: 700;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.calc-key.fn { color: var(--muted); font-size: 0.82rem; font-weight: 600; }
.calc-keys--eng .calc-key.fn { font-size: 0.78rem; }
.calc-key.wide-2 { grid-column: span 2; }
.calc-key.eq { background: var(--accent); color: #110e00; border-color: var(--accent); }
.calc-key.eq:hover { filter: brightness(1.06); }

/* tools-kit */
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.tool-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}
.tool-action-icon {
  display: inline-flex;
  flex-shrink: 0;
  width: 0.95rem;
  height: 0.95rem;
  opacity: 0.88;
}
.tool-action-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}
.tool-action-btn:hover .tool-action-icon { opacity: 1; }
.tool-action-label { line-height: 1.2; }
.tool-action-btn:hover { border-color: var(--accent); color: var(--accent); }
.tool-action-accent { border-color: rgba(201,162,39,0.4); color: var(--accent); }
.tool-copy-menu { display: contents; }

.tool-social {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem 1.25rem;
  margin-top: 0.85rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: linear-gradient(145deg, rgba(19, 28, 39, 0.85), rgba(14, 21, 32, 0.92));
}
.tool-social-like {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}
.tool-social-like-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--border2);
  border-radius: 999px;
  background: var(--surface2);
  color: var(--text);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}
.tool-social-like-btn:hover:not(:disabled) {
  border-color: rgba(45, 212, 163, 0.45);
  background: rgba(45, 212, 163, 0.08);
}
.tool-social-like-btn.is-liked {
  border-color: rgba(45, 212, 163, 0.5);
  background: rgba(45, 212, 163, 0.12);
  color: #2dd4a3;
  cursor: default;
}
.tool-social-like-btn.is-busy { opacity: 0.65; pointer-events: none; }
.tool-social-like-icon { font-size: 1rem; line-height: 1; }
.tool-social-like-count {
  font-size: 0.78rem;
  color: var(--muted);
}
.tool-social-like-count strong {
  color: var(--text);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.tool-social-share {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.tool-social-share-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tool-social-share-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.tool-social-share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.72rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.tool-social-share-btn:hover {
  border-color: rgba(201, 162, 39, 0.45);
  color: var(--accent);
  text-decoration: none;
}
.tool-social-share-btn.is-vk:hover { border-color: rgba(76, 117, 163, 0.55); color: #7eb3e8; }
.tool-social-share-btn.is-tg:hover { border-color: rgba(42, 136, 202, 0.55); color: #5eb3f5; }
.tool-social-share-btn.is-wa:hover { border-color: rgba(37, 211, 102, 0.45); color: #2dd4a3; }
@media (max-width: 520px) {
  .tool-social { flex-direction: column; align-items: stretch; }
  .tool-social-share { justify-content: space-between; }
}

.tool-formula {
  margin-top: 1rem;
  font-size: 0.82rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.85rem;
  background: var(--surface2);
}
.tool-formula summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  user-select: none;
}
.tool-formula-body p { margin: 0.5rem 0 0; font-family: ui-monospace, monospace; font-size: 0.78rem; }
.tool-compare {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.tool-compare-title { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 0.65rem; }
.tool-compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.65rem; }
@media (max-width: 420px) { .tool-compare-grid { grid-template-columns: 1fr; } }
.tool-compare-col {
  padding: 0.75rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.tool-compare-col.is-highlight { border-color: rgba(201,162,39,0.45); background: var(--accent-dim); }
.tool-compare-label { font-size: 0.75rem; color: var(--muted); margin-bottom: 0.25rem; }
.tool-compare-value { font-size: 1.05rem; font-weight: 800; color: var(--text); }
.tool-compare-sub { font-size: 0.75rem; color: var(--muted); margin-top: 0.25rem; }
.tool-hints {
  margin-bottom: 1.25rem;
  padding: 1rem 1.1rem;
  background: var(--accent-dim);
  border: 1px solid rgba(201,162,39,0.22);
  border-radius: var(--radius);
}
.tool-hints-title { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); margin-bottom: 0.6rem; }
.tool-hint {
  font-size: 0.84rem;
  color: var(--text);
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(201,162,39,0.12);
  line-height: 1.45;
}
.tool-hint:last-child { border-bottom: none; padding-bottom: 0; }
.tool-hint.is-warn { color: #f0b860; }
.tool-hint.is-link a { color: var(--accent); font-weight: 600; }
.tool-hint.is-link a:hover { text-decoration: underline; }
.tool-project {
  margin-bottom: 1.5rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
}
.tool-project summary { cursor: pointer; font-weight: 600; color: var(--muted); }
.tool-project-empty { color: var(--subtle); font-size: 0.82rem; margin-top: 0.5rem; }
.tool-project-item {
  margin-top: 0.65rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
}
.tool-project-meta { display: flex; justify-content: space-between; gap: 0.5rem; font-size: 0.78rem; color: var(--muted); }
.tool-project-meta span { color: var(--subtle); white-space: nowrap; }
.tool-project-sum { font-weight: 700; margin: 0.25rem 0 0.4rem; color: var(--green); }
.tool-project-load {
  padding: 0.3rem 0.6rem;
  font-size: 0.72rem;
  font-family: inherit;
  border: 1px solid var(--border2);
  border-radius: 6px;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
}
.tool-history {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
}
.tool-history summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--muted);
  user-select: none;
}
.tool-history-list { margin-top: 0.65rem; }
.tool-history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
}
.tool-history-item:last-child { border-bottom: none; }
.tool-history-line {
  flex: 1;
  color: var(--text);
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-size: 0.78rem;
  word-break: break-all;
}
.tool-history-use {
  padding: 0.25rem 0.55rem;
  font-size: 0.72rem;
  font-family: inherit;
  border: 1px solid var(--border2);
  border-radius: 6px;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  white-space: nowrap;
}
.tool-history-empty { color: var(--subtle); font-size: 0.82rem; margin-top: 0.5rem; }
.tool-next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.85rem 1rem;
  margin-bottom: 1.5rem;
  border: 1px dashed var(--border2);
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  color: var(--muted);
}
.tool-next a { font-weight: 700; white-space: nowrap; }
.kalk-toast {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--surface);
  border: 1px solid var(--accent);
  color: var(--text);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 9999;
}
.kalk-toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* embed mode (?embed=1) */
html.kalk-embed-root .kalk-chrome { display: none !important; }
body.kalk-embed { background: var(--bg); }
body.kalk-embed .wrap {
  max-width: 100%;
  padding: 0.5rem 0.65rem 0.35rem;
}
body.kalk-embed .kalk-embed-window {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}
body.kalk-embed .kalk-embed-tag {
  position: absolute;
  top: 0.45rem;
  right: 0.65rem;
  z-index: 2;
  background: var(--green);
  color: #082518;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 20px;
  pointer-events: none;
}
body.kalk-embed .kalk-embed-topbar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.85rem;
  background: #0d1219;
  border-bottom: 1px solid var(--border);
  padding-right: 5.5rem;
}
body.kalk-embed .kalk-embed-dots {
  display: flex;
  gap: 5px;
  flex-shrink: 0;
}
body.kalk-embed .kalk-embed-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}
body.kalk-embed .kalk-embed-dot--red { background: #ff5f57; }
body.kalk-embed .kalk-embed-dot--yellow { background: #febc2e; }
body.kalk-embed .kalk-embed-dot--green { background: #28c840; }
body.kalk-embed .kalk-embed-topbar-title {
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
body.kalk-embed .kalk-embed-topbar-title a {
  color: var(--muted);
  text-decoration: none;
}
body.kalk-embed .kalk-embed-topbar-title a:hover { color: var(--accent); }
body.kalk-embed .tool-card {
  margin-bottom: 0;
  border: none;
  border-radius: 0;
  box-shadow: none;
  padding: 0.75rem 0.85rem 0.65rem;
}
body.kalk-embed .tool-tabs { margin-bottom: 0.65rem; }
body.kalk-embed .tool-hint-bar {
  margin-bottom: 0.65rem;
  padding: 0.5rem 0.7rem;
  font-size: 0.78rem;
  line-height: 1.45;
}
body.kalk-embed .tool-compare {
  margin-top: 0.65rem;
}
body.kalk-embed .tool-result {
  margin-top: 0.5rem;
}
body.kalk-embed .calc-display {
  margin-bottom: 0.55rem;
  min-height: 2.65rem;
  padding: 0.65rem 0.85rem;
  font-size: 1.55rem;
}
body.kalk-embed .calc-keys { gap: 0.35rem; }
body.kalk-embed .calc-key { min-height: 2.65rem; padding: 0.5rem 0.3rem; font-size: 1.15rem; }
body.kalk-embed .calc-key.op { font-size: 1.38rem; }
body.kalk-embed .calc-keys--eng .calc-key { min-height: 2.45rem; font-size: 0.88rem; }
body.kalk-embed .calc-keys--eng .calc-key.op { font-size: 1.2rem; }
body.kalk-embed .tool-history,
body.kalk-embed #formulaMount,
body.kalk-embed .kalk-embed-hide {
  display: none !important;
}
body.kalk-embed .tool-social { display: none !important; }
body.kalk-embed .tool-actions {
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  gap: 0.32rem;
}
body.kalk-embed .tool-action-btn {
  padding: 0.38rem 0.58rem;
  font-size: 0.72rem;
}
body.kalk-embed .tool-action-icon {
  width: 0.85rem;
  height: 0.85rem;
}
html.kalk-embed-root {
  height: auto;
}
html.kalk-embed-root body {
  overflow-x: hidden;
  overflow-y: hidden;
  margin: 0;
}

/* legacy — не используется в новом embed chrome */
.kalk-embed-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem 0.55rem;
  text-align: center;
  font-size: 0.74rem;
  color: var(--subtle);
  padding: 0.65rem 0.5rem 0.25rem;
  margin-top: 0.35rem;
  border-top: 1px solid var(--border);
}
.kalk-embed-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.01em;
}
.kalk-embed-brand img {
  display: block;
  flex-shrink: 0;
}
.kalk-embed-brand:hover { color: var(--accent); }
.kalk-embed-sep { color: var(--border2); user-select: none; }
.kalk-embed-more { color: var(--muted); font-weight: 600; text-decoration: none; }
.kalk-embed-more:hover { color: var(--accent); }

/* embed panel on full tool page */
.tool-embed-panel {
  margin: 2rem 0;
  padding: 1.25rem 1.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.tool-embed-panel h2 {
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  color: var(--text);
}
.tool-embed-lead {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 1rem;
  line-height: 1.55;
}
.tool-embed-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.tool-embed-code {
  display: block;
  margin: 0 0 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--text);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.tool-embed-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}
.tool-embed-actions .tool-action-btn { text-decoration: none; }
.tool-embed-alt {
  margin-top: 0.5rem;
  font-size: 0.84rem;
  color: var(--muted);
}
.tool-embed-alt summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.tool-embed-note {
  font-size: 0.78rem;
  color: var(--subtle);
  margin: 1rem 0 0;
  line-height: 1.5;
}
.kalkplace-embed-wrap { max-width: 720px; margin: 0 auto; }