.waterfall-page { padding-bottom: 2rem; }
.waterfall-hero { padding: 3.5rem 1rem 3rem; background: linear-gradient(180deg, #eefcf9 0%, #f8fbff 70%, transparent 100%); }
.waterfall-hero-copy { width: min(980px, 100%); margin: 0 auto; text-align: center; }
.waterfall-eyebrow { margin: 0 0 .75rem; color: #0f766e; font-size: .82rem; font-weight: 700; letter-spacing: .08em; }
.waterfall-hero .hero-title { max-width: 880px; margin: 0 auto; }
.waterfall-hero .hero-subtitle { max-width: 780px; margin: 1rem auto 0; }
.waterfall-hero .hero-pills { justify-content: center; }
.waterfall-tool-section { width: min(1180px, 94vw); margin: 0 auto; }
.waterfall-tool-grid { align-items: start; }
.waterfall-format-note { padding: .85rem 1rem; color: #155e75; background: #ecfeff; border: 1px solid #bae6fd; border-radius: 12px; font-size: .9rem; }
.waterfall-editor { display: grid; gap: .7rem; }
.waterfall-row { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(82px, .7fr) minmax(112px, .8fr) 42px; gap: .5rem; align-items: center; }
.waterfall-row label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.waterfall-row input, .waterfall-row select { width: 100%; min-height: 44px; padding: .55rem .65rem; border: 1px solid var(--border-color); border-radius: 10px; background: #fff; color: var(--text-color); font: inherit; }
.waterfall-row input:focus, .waterfall-row select:focus { outline: 3px solid rgba(14, 165, 233, .24); border-color: #0ea5e9; }
.waterfall-remove { min-width: 44px; min-height: 44px; padding: 0; color: #b91c1c; border: 1px solid #fecaca; border-radius: 10px; background: #fff; cursor: pointer; }
.waterfall-editor-actions, .waterfall-download-actions { display: flex; flex-wrap: wrap; gap: .65rem; align-items: center; }
.waterfall-limit { margin: 0; color: var(--text-secondary); font-size: .84rem; }
.waterfall-error { padding: .75rem 1rem; color: #991b1b; background: #fef2f2; border: 1px solid #fecaca; border-radius: 10px; }
.waterfall-primary-action { width: 100%; min-height: 48px; }
.waterfall-result-card { min-height: 100%; }
.waterfall-preview-header { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; }
.waterfall-chart-wrap { position: relative; min-height: 280px; margin-top: 1rem; border: 1px solid var(--border-light); border-radius: 14px; background: #fff; overflow: hidden; }
#waterfall-canvas { display: block; width: 100%; height: auto; min-height: 280px; }
.waterfall-empty { position: absolute; inset: 0; display: grid; place-items: center; padding: 2rem; color: var(--text-secondary); text-align: center; background: rgba(255,255,255,.92); }
.waterfall-legend { display: flex; flex-wrap: wrap; gap: .75rem 1rem; margin-top: .8rem; color: var(--text-secondary); font-size: .82rem; }
.waterfall-legend-item { display: inline-flex; align-items: center; gap: .35rem; }
.waterfall-legend-swatch { display: inline-block; width: .75rem; height: .75rem; border-radius: 3px; }
.waterfall-summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .7rem; margin-top: 1rem; }
.waterfall-summary-grid div { padding: .8rem; border: 1px solid var(--border-color); border-radius: 12px; background: #fafafa; }
.waterfall-summary-grid span, .waterfall-summary-grid strong { display: block; }
.waterfall-summary-grid span { color: var(--text-secondary); font-size: .78rem; }
.waterfall-summary-grid strong { margin-top: .2rem; font-size: 1.05rem; overflow-wrap: anywhere; }
.waterfall-example-card { background: linear-gradient(135deg, rgba(20,184,166,.08), rgba(59,130,246,.08)); }
.waterfall-example-flow { display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; color: #115e59; font-size: .9rem; }
.waterfall-example-flow span { padding: .45rem .6rem; border-radius: 999px; background: #fff; border: 1px solid #bae6fd; }
.waterfall-example-flow b { color: #64748b; }
.waterfall-copy-section { width: min(980px, 94vw); margin: 2rem auto 0; }
.waterfall-answer-label { margin: 0; color: #0f766e; font-weight: 700; }
.waterfall-answer { margin: .45rem 0 0; font-size: 1.05rem; line-height: 1.85; }
.waterfall-paragraph { margin: 1rem 0 0; line-height: 1.9; }
.waterfall-info-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.waterfall-info-card { padding: 1rem; border: 1px solid var(--border-color); border-radius: 14px; background: #fff; }
.waterfall-info-card h3 { margin: 0; font-size: 1rem; }
.waterfall-info-card p { margin: .5rem 0 0; line-height: 1.75; }
.waterfall-card-example { color: #0f766e; font-size: .9rem; }
.waterfall-page .comparison-table { min-width: 720px; }
.waterfall-page .faq-answer p { line-height: 1.8; }
@media (max-width: 900px) {
  .waterfall-row { grid-template-columns: minmax(0, 1.1fr) minmax(78px, .75fr) minmax(106px, .85fr) 42px; }
  .waterfall-info-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .waterfall-hero { padding: 2.4rem 1rem 2rem; }
  .waterfall-row { grid-template-columns: 1fr 1fr; }
  .waterfall-row input:first-of-type { grid-column: 1 / -1; }
  .waterfall-row select { grid-column: 1 / span 1; }
  .waterfall-remove { grid-column: 2; grid-row: 2; justify-self: end; }
  .waterfall-summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .waterfall-preview-header { display: block; }
  .waterfall-preview-header .pill { margin-top: .6rem; }
  .waterfall-chart-wrap { margin-left: -.25rem; margin-right: -.25rem; }
}
@media (prefers-reduced-motion: reduce) {
  .waterfall-page *, .waterfall-page *::before, .waterfall-page *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}