*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
}
a { color: inherit; }
.wm-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 42px;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}
.wm-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
}
.wm-logo img { width: 30px; height: 30px; border-radius: 8px; }
.wm-logo span span { color: var(--accent); }
.wm-logo strong {
  border-left: 1px solid var(--border);
  padding-left: 10px;
  color: var(--text-muted);
  font-size: .78rem;
}
.wm-nav-links { display: flex; align-items: center; gap: 22px; }
.wm-nav-links a {
  text-decoration: none;
  font-size: .82rem;
  color: var(--text-secondary);
  font-weight: 600;
}
.wm-nav-links a:hover { color: var(--accent); }
main { overflow: hidden; }
.wm-hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 78px 42px 56px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  align-items: center;
  gap: 56px;
}
.wm-eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .72rem;
  font-weight: 800;
  margin: 0 0 16px;
}
.wm-hero h1 {
  font-size: clamp(2.4rem, 5.6vw, 4.8rem);
  line-height: 1;
  letter-spacing: 0;
  margin: 0 0 22px;
  max-width: 760px;
}
.wm-hero p {
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 650px;
}
.wm-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.wm-btn {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 18px;
  font: inherit;
  font-size: .88rem;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
}
.wm-btn-primary {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}
.wm-btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
}
.wm-hero-preview {
  border: 1px solid var(--border);
  background: var(--bg-surface);
  border-radius: 8px;
  padding: 26px;
  box-shadow: var(--elev-2);
}
.preview-wall {
  aspect-ratio: 1.55;
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(255,255,255,.7), rgba(244,242,248,.95)),
    repeating-linear-gradient(90deg, transparent 0 38px, rgba(98,0,238,.05) 39px 40px);
  padding: 11% 10% 9%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 1.35fr .6fr;
  gap: 9% 8%;
}
.preview-panel {
  border: 7px ridge #ddd7ce;
  background: rgba(255,255,255,.34);
  box-shadow: 0 6px 14px rgba(26,19,37,.12);
}
.preview-label {
  margin-top: 14px;
  color: var(--text-muted);
  font-size: .78rem;
  font-weight: 700;
  text-align: center;
}
.wm-stats {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.wm-stats div {
  padding: 22px 18px;
  text-align: center;
  border-right: 1px solid var(--border);
}
.wm-stats div:last-child { border-right: 0; }
.wm-stats strong {
  display: block;
  color: var(--accent);
  font-size: 1.55rem;
  font-weight: 800;
}
.wm-stats span {
  display: block;
  color: var(--text-muted);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-top: 4px;
}
.wm-workspace {
  max-width: 1480px;
  margin: 0 auto;
  padding: 42px;
  display: grid;
  grid-template-columns: 390px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}
.wm-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--elev-1);
}
.wm-form { padding: 22px; }
.wm-output { padding: 22px; min-width: 0; }
.wm-section-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}
.wm-section-head > span {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 8px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-weight: 800;
}
.wm-section-head h2 { margin: 0; font-size: 1.05rem; }
.wm-section-head p { margin: 4px 0 0; color: var(--text-muted); font-size: .8rem; line-height: 1.55; }
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
label {
  color: var(--text-secondary);
  font-size: .76rem;
  font-weight: 800;
}
input[type="number"],
input[type="url"],
select,
textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-base);
  color: var(--text-primary);
  padding: 9px 10px;
  font: inherit;
  font-size: .88rem;
  font-weight: 700;
}
textarea {
  min-height: 110px;
  resize: vertical;
  line-height: 1.45;
}
select {
  min-height: 39px;
  cursor: pointer;
}
.product-helper {
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 18px;
  display: grid;
  gap: 12px;
}
.product-helper h3 {
  margin: 0;
  font-size: .95rem;
}
.product-helper p {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: .78rem;
  line-height: 1.55;
}
.helper-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.detected-panel {
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: var(--bg-surface);
  color: var(--text-muted);
  padding: 12px;
  font-size: .8rem;
  line-height: 1.55;
}
.detected-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.detected-grid div {
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 8px;
  background: var(--bg-base);
}
.detected-grid span {
  display: block;
  color: var(--text-muted);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.detected-grid strong {
  display: block;
  margin-top: 3px;
  color: var(--text-primary);
  font-size: .86rem;
}
.detected-notes {
  margin-top: 10px;
}
.detected-notes p {
  margin: 4px 0 0;
}
.row-editor {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.row-editor h3 { margin: 0; font-size: .95rem; }
.row-editor p { margin: 4px 0 12px; color: var(--text-muted); font-size: .78rem; }
#row-heights { display: grid; gap: 10px; }
.wm-options {
  margin-top: 18px;
  display: grid;
  gap: 10px;
  color: var(--text-secondary);
}
.check-row {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: .8rem;
}
.warnings { display: grid; gap: 8px; margin-bottom: 14px; }
.warn {
  border-left: 3px solid var(--status-warn);
  background: var(--status-warn-bg);
  color: #7a4a03;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: .82rem;
  line-height: 1.45;
}
.drawing-shell {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
}
.drawing-shell svg {
  display: block;
  width: 100%;
  min-width: 0;
  height: auto;
}
.output-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-top: 16px;
}
.summary-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px 12px;
}
.summary-item span {
  display: block;
  color: var(--text-muted);
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 800;
}
.summary-item strong {
  display: block;
  margin-top: 4px;
  color: var(--text-primary);
  font-size: .95rem;
}
.wm-guide {
  max-width: 1180px;
  margin: 0 auto;
  padding: 48px 42px 80px;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, 1.1fr);
  gap: 36px;
}
.wm-guide h2 {
  margin: 0 0 14px;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  line-height: 1.08;
  letter-spacing: 0;
}
.wm-guide p { color: var(--text-secondary); line-height: 1.8; }
.guide-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.guide-list div {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
}
.guide-list strong { display: block; margin-bottom: 8px; }
.guide-list span { display: block; color: var(--text-muted); line-height: 1.6; font-size: .86rem; }
.wm-answer {
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 42px;
}
.wm-answer-inner {
  max-width: 900px;
  margin: 0 auto;
  text-align: left;
}
.wm-answer h2 {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  letter-spacing: 0;
  line-height: 1.12;
}
.wm-answer p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1rem;
  margin: 0 0 18px;
}
.formula-box {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  display: grid;
  gap: 8px;
}
.formula-box strong {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--accent);
}
.formula-box code {
  display: block;
  color: var(--text-primary);
  font-size: .95rem;
  white-space: normal;
}
.wm-seo {
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
  padding: 56px 42px;
}
.wm-seo-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
}
.wm-seo h2 {
  margin: 0 0 14px;
  font-size: 1.35rem;
  line-height: 1.18;
}
.wm-seo h3 {
  margin: 20px 0 6px;
  font-size: .98rem;
}
.wm-seo p {
  color: var(--text-secondary);
  line-height: 1.82;
  font-size: .92rem;
  margin: 0 0 14px;
}
.wm-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
  padding: 24px 42px;
  color: var(--text-muted);
  font-size: .78rem;
}
.wm-footer div { display: flex; gap: 18px; }
.wm-footer a { color: var(--text-muted); text-decoration: none; }
.wm-footer a:hover { color: var(--accent); }
@media (max-width: 980px) {
  .wm-nav { padding: 12px 20px; align-items: flex-start; flex-direction: column; }
  .wm-hero, .wm-workspace, .wm-guide { grid-template-columns: 1fr; padding-left: 20px; padding-right: 20px; }
  .wm-answer { padding-left: 20px; padding-right: 20px; }
  .wm-seo { padding-left: 20px; padding-right: 20px; }
  .wm-seo-inner { grid-template-columns: 1fr; }
  .wm-hero-preview { order: -1; }
  .wm-stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .wm-logo strong { display: none; }
  .wm-nav-links { flex-wrap: wrap; gap: 12px; }
  .wm-hero { padding-top: 34px; }
  .field-grid, .guide-list { grid-template-columns: 1fr; }
  .wm-stats { grid-template-columns: 1fr; }
  .wm-stats div { border-right: 0; border-bottom: 1px solid var(--border); }
}