/* Diagnostics & Tools: the instrument bench. Cooler paper, an ink key band, measured rules. */
.db-page {
  --db-paper: #eeede9;
  --db-sheet: #f8f7f4;
  --db-ink: #1a1c1d;
  --db-ink-soft: #383b3c;
  --db-muted: #55585a;
  --db-line: #868a8a;
  --db-rule: #d3d3ce;
  --db-rule-soft: #e1e1dc;
  --db-bronze: #7d5a1d;
  --db-bronze-wash: #e8dcbc;
  --db-inverse: #f3f2ef;
  --db-inverse-muted: #b4b6b3;
  --db-inverse-rule: #3c4041;
  --db-gutter: clamp(22px, 4.4vw, 64px);
  --db-section: clamp(62px, 6.8vw, 108px);
  --db-serif: "Cormorant Garamond Variable", "Cormorant Garamond", Georgia, serif;
  --db-sans: "DM Sans Variable", "DM Sans", system-ui, sans-serif;
  background: var(--db-paper) !important;
  color: var(--db-ink);
  font-family: var(--db-sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: clip;
  position: relative;
  isolation: isolate;
  font-variant-numeric: tabular-nums;
}
.db-page * { box-sizing: border-box; }
.db-page ::selection { background: var(--db-bronze-wash); color: var(--db-ink); }
.db-page :where(h1, h2, h3, h4, p, figure, dl, dd, ol, ul) { margin: 0; }
.db-page :where(ol, ul) { padding: 0; list-style: none; }
.db-page a { color: inherit; text-underline-offset: 4px; }
.db-page :is(a, summary, button, input, [tabindex="0"]):focus-visible { outline: 2px solid var(--db-ink); outline-offset: 3px; }
.db-page section[id], .db-page article[id] { scroll-margin-top: 150px; }
.db-sr { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.db-wrap { width: 100%; max-width: 1400px; margin-inline: auto; padding-inline: var(--db-gutter); }

/* Type */
.db-page :is(h1, h2, h3) { font-family: var(--db-serif); font-weight: 500; color: var(--db-ink); text-wrap: balance; }
.db-page h1 { font-size: clamp(2.6rem, 4.3vw, 4.4rem); line-height: 1; letter-spacing: -0.028em; max-width: 18ch; }
.db-page h2 { font-size: clamp(2rem, 3.3vw, 3.3rem); line-height: 1.04; letter-spacing: -0.018em; max-width: 24ch; }
.db-page h3 { font-size: clamp(1.45rem, 2vw, 2rem); line-height: 1.1; letter-spacing: -0.008em; }
.db-page h4 { font-family: var(--db-sans); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; color: var(--db-muted); }
.db-page p { max-width: 70ch; }
.db-lead { margin-top: 24px; font-size: clamp(1.04rem, 1.3vw, 1.16rem); line-height: 1.6; color: var(--db-ink-soft); max-width: 56ch; }
.db-note { margin-top: 16px; font-size: 0.94rem; line-height: 1.66; color: var(--db-muted); }
.db-page :is(p, dd, li) a:not([class]) { text-decoration: underline; text-decoration-thickness: 1px; text-decoration-color: var(--db-line); }
.db-page :is(p, dd, li) a:not([class]):hover { color: var(--db-bronze); text-decoration-color: currentColor; }

/* Actions */
.db-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 30px; margin-top: 30px; }
.db-page .db-button {
  display: inline-flex; align-items: center; gap: 12px; min-height: 54px; padding: 0 26px;
  background: var(--db-ink); color: var(--db-inverse); font-weight: 600; font-size: 0.95rem; text-decoration: none;
  transition: background-color 180ms ease-out;
}
.db-page .db-button:hover { background: #33393a; }
.db-page .db-link { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-weight: 600; font-size: 0.93rem; text-decoration: none; }
.db-page .db-link:hover { color: var(--db-bronze); text-decoration: underline; text-decoration-thickness: 1px; }
.db-arrow { flex: none; transition: transform 180ms ease-out; }
.db-page :is(.db-button, .db-link):hover .db-arrow { transform: translateX(3px); }

/* Sections */
.db-section { padding-block: var(--db-section); }
.db-sheet { background: var(--db-sheet); border-block: 1px solid var(--db-rule); }
.db-head { max-width: 66rem; }
.db-head p { margin-top: 18px; color: var(--db-muted); font-size: 1.01rem; line-height: 1.7; }
.db-head .db-link { margin-top: 12px; }
.db-head-split { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(26px, 5vw, 88px); align-items: end; max-width: none; }
.db-head-split > p { margin-top: 0; padding-bottom: 4px; }

/* Hero */
.db-hero { padding-top: clamp(132px, 12vw, 172px); padding-bottom: clamp(38px, 4.5vw, 60px); }
.db-hero-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(28px, 5vw, 92px); align-items: end; }
.db-hero-side p { font-size: 0.98rem; line-height: 1.72; color: var(--db-muted); }
.db-hero-side p + p { margin-top: 14px; }

/* The bench key: the ink band */
.db-key { margin-top: clamp(38px, 4.6vw, 60px); background: var(--db-ink); color: var(--db-inverse); }
.db-key-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.db-key-list > li { border-right: 1px solid var(--db-inverse-rule); }
.db-key-list > li:last-child { border-right: 0; }
.db-key-item { display: flex; flex-direction: column; height: 100%; padding: 26px 26px 28px; text-decoration: none; }
.db-key-count { font-family: var(--db-serif); font-size: clamp(2.6rem, 3.6vw, 3.6rem); line-height: 0.9; letter-spacing: -0.02em; color: var(--db-inverse); }
.db-key-name { margin-top: 14px; font-size: 0.96rem; font-weight: 600; }
.db-key-what { margin-top: 10px; flex: 1; font-size: 0.89rem; line-height: 1.58; color: var(--db-inverse-muted); }
.db-key-go { margin-top: 18px; font-size: 0.79rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--db-inverse-muted); transition: color 160ms ease-out; }
.db-key-item:hover .db-key-go { color: #e8c887; }
.db-key-item:hover .db-key-name { text-decoration: underline; text-decoration-thickness: 1px; }
.db-key-item:focus-visible { outline: 2px solid #e8c887; outline-offset: -4px; }

/* On this page */
.db-page-nav { position: sticky; top: 72px; z-index: 20; border-block: 1px solid var(--db-rule); background: var(--db-sheet); }
@media (min-width: 960px) { .db-page-nav { top: 82px; } }
.db-page-nav ul { display: flex; gap: 0 30px; overflow-x: auto; scrollbar-width: thin; scrollbar-color: var(--db-line) transparent; }
.db-page-nav a { display: inline-flex; align-items: center; min-height: 54px; white-space: nowrap; font-size: 0.9rem; font-weight: 600; text-decoration: none; }
.db-page-nav a:hover { color: var(--db-bronze); }

/* Bench-selected starting points */
.db-starts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 clamp(26px, 3.6vw, 58px); border-top: 2px solid var(--db-ink); margin-top: clamp(30px, 3.6vw, 48px); }
.db-start { display: flex; flex-direction: column; padding: 26px 0 30px; text-decoration: none; }
.db-start-rule { display: block; width: 100%; height: 7px; border-top: 3px solid var(--db-bronze); }
.db-start h3 { margin-top: 18px; }
.db-start-what { margin-top: 14px; flex: 1; font-size: 0.95rem; line-height: 1.64; color: var(--db-muted); }
.db-start-when { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--db-rule); font-size: 0.89rem; line-height: 1.55; color: var(--db-ink-soft); }
.db-start-go { margin-top: 16px; font-size: 0.86rem; font-weight: 600; color: var(--db-ink); display: inline-flex; align-items: center; gap: 9px; }
.db-start:hover h3 { color: var(--db-bronze); }
.db-start:hover .db-start-go .db-arrow { transform: translateX(3px); }

/* Instruments */
.db-instruments { border-top: 2px solid var(--db-ink); margin-top: clamp(30px, 3.6vw, 48px); }
.db-instrument { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(22px, 4vw, 76px); padding-block: clamp(32px, 3.6vw, 48px); border-bottom: 1px solid var(--db-rule); }
.db-instrument-head { align-self: start; }
.db-instrument-head h3 a { text-decoration: none; }
.db-instrument-head h3 a:hover { color: var(--db-bronze); text-decoration: underline; text-decoration-thickness: 1px; }
.db-instrument-reads { margin-top: 14px; font-size: 0.96rem; line-height: 1.64; color: var(--db-muted); }
.db-instrument-input { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--db-rule); font-size: 0.88rem; line-height: 1.55; color: var(--db-ink-soft); }
.db-instrument-input b { font-weight: 600; }
.db-instrument-head .db-link { margin-top: 14px; }
.db-instrument-body { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px clamp(22px, 3vw, 48px); align-content: start; }
.db-instrument-body h4 { margin-bottom: 12px; }
.db-instrument-body li { padding: 9px 0; border-top: 1px solid var(--db-rule-soft); font-size: 0.92rem; line-height: 1.56; color: var(--db-ink-soft); }
.db-instrument-body li:first-child { border-top: 0; padding-top: 0; }

/* Calculator index */
.db-filter { display: grid; grid-template-columns: minmax(0, 22rem) minmax(0, 1fr); gap: 12px 24px; align-items: center; border-top: 2px solid var(--db-ink); padding-top: 18px; margin-top: clamp(30px, 3.6vw, 48px); }
.db-filter label { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--db-muted); display: block; }
.db-filter input {
  width: 100%; margin-top: 8px; min-height: 48px; padding: 0 14px; font: inherit; font-size: 0.97rem;
  color: var(--db-ink); background: var(--db-sheet); border: 1px solid var(--db-line); border-radius: 0;
}
.db-filter input::placeholder { color: var(--db-muted); }
.db-filter-status { font-size: 0.9rem; color: var(--db-muted); align-self: end; padding-bottom: 12px; }
.db-sector { border-bottom: 1px solid var(--db-rule); }
.db-sector-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 24px; align-items: baseline; padding: 26px 0 14px; }
.db-sector-head h3 { font-size: clamp(1.35rem, 1.7vw, 1.7rem); }
.db-sector-count { font-size: 0.84rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: var(--db-muted); }
.db-sector-what { grid-column: 1 / -1; font-size: 0.92rem; line-height: 1.6; color: var(--db-muted); max-width: 78ch; }
.db-tools { columns: 3; column-gap: clamp(24px, 3vw, 52px); padding-bottom: 26px; }
.db-tool { break-inside: avoid; border-top: 1px solid var(--db-rule-soft); }
.db-tool:first-child { border-top: 1px solid var(--db-rule-soft); }
.db-tool-link { display: block; padding: 11px 0; font-size: 0.95rem; line-height: 1.45; text-decoration: none; }
.db-tool-link:hover { color: var(--db-bronze); text-decoration: underline; text-decoration-thickness: 1px; }
.db-tool-model { display: block; margin-top: 3px; font-size: 0.79rem; letter-spacing: 0.03em; color: var(--db-muted); }
.db-tool[hidden] { display: none; }
.db-sector[hidden] { display: none; }
.db-empty { padding: 26px 0; font-size: 0.97rem; color: var(--db-muted); }

/* Accounting bridge */
.db-bridge { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(26px, 5vw, 88px); align-items: start; }
.db-bridge-steps { border-top: 2px solid var(--db-ink); }
.db-bridge-step { display: grid; grid-template-columns: 2.6rem minmax(0, 1fr); gap: 6px 22px; padding: 20px 0 22px; border-bottom: 1px solid var(--db-rule); }
.db-bridge-num { font-family: var(--db-serif); font-size: 1.7rem; line-height: 1; color: var(--db-bronze); }
.db-bridge-step h3 { font-size: clamp(1.2rem, 1.5vw, 1.5rem); }
.db-bridge-step h3 a { text-decoration: none; }
.db-bridge-step h3 a:hover { color: var(--db-bronze); text-decoration: underline; text-decoration-thickness: 1px; }
.db-bridge-step p { grid-column: 2; margin-top: 8px; font-size: 0.94rem; line-height: 1.62; color: var(--db-muted); }

/* Limits */
.db-limits { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 clamp(26px, 4vw, 72px); border-top: 2px solid var(--db-ink); margin-top: clamp(30px, 3.6vw, 48px); }
.db-limits > li { padding: 24px 0 26px; border-bottom: 1px solid var(--db-rule); }
.db-limits h3 { font-size: clamp(1.25rem, 1.55vw, 1.55rem); }
.db-limits p { margin-top: 12px; font-size: 0.95rem; line-height: 1.66; color: var(--db-muted); }

/* Decision tools */
.db-decisions { border-top: 2px solid var(--db-ink); margin-top: clamp(30px, 3.6vw, 48px); }
.db-decision { border-bottom: 1px solid var(--db-rule); }
.db-decision-link { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 6px 34px; align-items: baseline; padding: 22px 0 24px; text-decoration: none; }
.db-decision-name { font-family: var(--db-serif); font-size: clamp(1.3rem, 1.7vw, 1.7rem); line-height: 1.14; }
.db-decision-link:hover .db-decision-name { color: var(--db-bronze); text-decoration: underline; text-decoration-thickness: 1px; }
.db-decision-what { font-size: 0.94rem; line-height: 1.62; color: var(--db-muted); }

/* Continue rail */
.db-next { border-top: 1px solid var(--db-rule); padding-block: clamp(42px, 4.6vw, 64px); }
.db-next-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 8px 40px; align-items: baseline; }
.db-next-head h2 { font-size: clamp(1.5rem, 2vw, 2rem); max-width: 20ch; }
.db-next-head p { font-size: 0.95rem; line-height: 1.68; color: var(--db-muted); }
.db-next-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 clamp(24px, 3.4vw, 56px); border-top: 2px solid var(--db-ink); margin-top: 22px; }
.db-next-item { display: flex; flex-direction: column; padding: 20px 0 22px; text-decoration: none; }
.db-next-name { font-family: var(--db-serif); font-size: clamp(1.28rem, 1.6vw, 1.6rem); line-height: 1.12; }
.db-next-item:hover .db-next-name { color: var(--db-bronze); text-decoration: underline; text-decoration-thickness: 1px; }
.db-next-what { margin-top: 10px; font-size: 0.91rem; line-height: 1.6; color: var(--db-muted); }

/* Responsive */
@media (max-width: 1180px) {
  .db-tools { columns: 2; }
  .db-starts { grid-template-columns: minmax(0, 1fr); }
  .db-start { border-bottom: 1px solid var(--db-rule); }
  .db-start:last-child { border-bottom: 0; }
  .db-start-rule { max-width: 160px; }
}
@media (max-width: 900px) {
  .db-hero-grid, .db-head-split, .db-instrument, .db-bridge, .db-next-head, .db-filter { grid-template-columns: minmax(0, 1fr); }
  .db-next-list { grid-template-columns: minmax(0, 1fr); }
  .db-next-item { border-bottom: 1px solid var(--db-rule); }
  .db-next-item:last-child { border-bottom: 0; }
  .db-head-split > p { padding-bottom: 0; }
  .db-key-list { grid-template-columns: minmax(0, 1fr); }
  .db-key-list > li { border-right: 0; border-bottom: 1px solid var(--db-inverse-rule); }
  .db-key-list > li:last-child { border-bottom: 0; }
  .db-limits { grid-template-columns: minmax(0, 1fr); }
  .db-decision-link { grid-template-columns: minmax(0, 1fr); }
  .db-filter-status { padding-bottom: 0; }
}
@media (max-width: 620px) {
  .db-page { font-size: 15px; }
  .db-tools { columns: 1; }
  .db-instrument-body { grid-template-columns: minmax(0, 1fr); }
  .db-page .db-button { width: 100%; justify-content: center; }
  .db-bridge-step { grid-template-columns: minmax(0, 1fr); }
  .db-bridge-step p { grid-column: 1; }
  .db-bridge-num { font-size: 1.4rem; }
}
@media (prefers-reduced-motion: reduce) {
  .db-page *, .db-page *::after, .db-page *::before { transition: none !important; animation: none !important; }
}