/* ==========================================================================
   Quiet Zeros — design system
   Warm paper + ink, one accent. Fraunces for display, Inter for UI.
   Hairline borders, no drop-shadow cards, decided spacing.
   ========================================================================== */

/* ---- Fonts (self-hosted, no third-party requests) ---- */
@font-face {
  font-family: "Fraunces";
  src: url("../fonts/fraunces-var.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "InterVar";
  src: url("../fonts/inter-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ---- Tokens ---- */
:root {
  color-scheme: light;

  --paper:   #faf8f3;   /* page */
  --card:    #fffefb;   /* raised surface / chart surface */
  --ink:     #1c1a17;
  --ink-2:   #57534a;
  --ink-3:   #8a857a;
  --line:    #e5e0d4;
  --line-2:  #d5cfc0;

  --brand:      #12523a;  /* text-safe deep pine */
  --brand-mark: #0e7d4c;  /* marks, focus, accents */
  --brand-wash: #eef3ee;  /* tinted background */

  /* Validated categorical chart palette (light) */
  --s1: #0e7d4c;
  --s2: #2a78d6;
  --s3: #d96a2b;
  --s4: #b04a8f;

  --chart-grid: #e7e3d8;
  --chart-axis: #c9c3b4;

  --radius: 6px;
  --font-ui: "InterVar", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;

  --w-page: 1080px;
  --w-prose: 680px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper:   #131210;
  --card:    #1b1916;
  --ink:     #f0ede4;
  --ink-2:   #b6b0a2;
  --ink-3:   #857f72;
  --line:    #2b2823;
  --line-2:  #3a362e;

  --brand:      #8fd7b2;
  --brand-mark: #22a06b;
  --brand-wash: #1a201c;

  /* Validated categorical chart palette (dark) */
  --s1: #22a06b;
  --s2: #3987e5;
  --s3: #d95926;
  --s4: #c765a5;

  --chart-grid: #2c2a25;
  --chart-axis: #3f3b33;
}

/* ---- Reset / base ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.6 var(--font-ui);
  font-feature-settings: "cv05", "cv11";
  -webkit-font-smoothing: antialiased;
  overflow-x: clip; /* belt-and-braces: no layout may force a horizontal scroll */
}
img, svg { display: block; max-width: 100%; }
a { color: var(--brand); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink); }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }
::selection { background: var(--brand-mark); color: #fff; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 560;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 .5em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.1rem, 4.5vw, 3.1rem); }
h2 { font-size: clamp(1.45rem, 2.6vw, 1.9rem); }
h3 { font-size: 1.15rem; font-family: var(--font-ui); font-weight: 620; letter-spacing: 0; }
p  { margin: 0 0 1em; }
.lede { font-size: 1.12rem; color: var(--ink-2); max-width: 46ch; }

.kicker {
  font: 640 .72rem/1 var(--font-ui);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 .9rem;
}

:focus-visible {
  outline: 2px solid var(--brand-mark);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--paper);
  padding: .5rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }

.wrap { max-width: var(--w-page); margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }

/* ---- Header ---- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.site-header .wrap {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: .3rem 1.5rem;
  min-height: 64px; padding-top: .6rem; padding-bottom: .6rem;
}
.wordmark {
  font-family: var(--font-display);
  font-weight: 600; font-size: 1.3rem; letter-spacing: -0.01em;
  color: var(--ink); text-decoration: none; white-space: nowrap;
  display: flex; align-items: center; gap: .55rem;
}
.wordmark svg { width: 22px; height: 22px; }
.wordmark:hover { color: var(--brand); }

.site-nav { margin-left: auto; display: flex; flex-wrap: wrap; align-items: center; gap: .4rem 1.4rem; }
.site-nav a {
  color: var(--ink-2); text-decoration: none;
  font-size: .92rem; font-weight: 480; white-space: nowrap;
}
@media (max-width: 560px) {
  .site-nav { margin-left: 0; width: 100%; gap: .4rem 1.1rem; }
  .site-nav a { font-size: .88rem; }
  .theme-toggle { margin-left: auto; }
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--brand-mark); text-decoration-thickness: 2px; text-underline-offset: 6px; }

.theme-toggle {
  appearance: none; border: 1px solid var(--line-2); background: transparent;
  color: var(--ink-2); border-radius: 999px;
  width: 34px; height: 34px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-3); }
.theme-toggle svg { width: 16px; height: 16px; }
:root[data-theme="dark"] .icon-moon { display: none; }
:root:not([data-theme="dark"]) .icon-sun { display: none; }

/* ---- Hero ---- */
.hero { padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(2.5rem, 6vw, 4rem); }
.hero .wrap { position: relative; }
.hero .wrap::after {
  /* the quiet zero — one decided ornament, desktop only */
  content: "0";
  position: absolute; right: clamp(0px, 4vw, 3rem); top: 50%;
  transform: translateY(-52%);
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(13rem, 24vw, 21rem); line-height: 1;
  color: var(--ink); opacity: .05;
  pointer-events: none; user-select: none;
}
@media (max-width: 980px) { .hero .wrap::after { content: none; } }
.hero h1 { max-width: 16ch; }
.hero .lede { margin-top: 1rem; }
.badge-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.6rem; }
.badge {
  font: 560 .74rem/1 var(--font-ui);
  letter-spacing: .06em; text-transform: uppercase;
  border: 1px solid var(--line-2); border-radius: 999px;
  padding: .45rem .8rem; color: var(--ink-2);
  display: inline-flex; align-items: center; gap: .4rem;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--brand-mark); }

/* ---- Tool index ---- */
.tool-index { border-top: 1px solid var(--line); }
.tool-row {
  display: grid;
  grid-template-columns: 3.2rem 1fr auto;
  align-items: baseline; gap: 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none; color: var(--ink);
}
.tool-row .idx {
  font: 480 .8rem/1 var(--font-ui);
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.tool-row .name {
  display: block;
  font-family: var(--font-display);
  font-size: 1.35rem; font-weight: 540; letter-spacing: -0.01em;
}
.tool-row .desc { display: block; color: var(--ink-2); font-size: .92rem; margin-top: .3rem; }
.tool-row .go {
  color: var(--ink-3); font-size: .9rem; white-space: nowrap;
  transition: transform .18s ease;
}
.tool-row:hover .name { color: var(--brand); }
.tool-row:hover .go { color: var(--brand); transform: translateX(3px); }
.tool-row:hover { background: linear-gradient(to right, transparent, var(--brand-wash) 300%); }
@media (max-width: 560px) {
  .tool-row { grid-template-columns: 1.9rem 1fr; }
  .tool-row .go { display: none; }
  .tool-row .name { font-size: 1.22rem; }
}

.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem; margin: 3rem 0 1rem;
}
.section-head h2 { margin: 0; }
.section-head .hint { color: var(--ink-3); font-size: .88rem; }

/* ---- Calculator layout ---- */
.tool-head { padding: clamp(1.8rem, 4vw, 2.8rem) 0 1.4rem; }
.crumbs { font-size: .84rem; color: var(--ink-3); margin-bottom: 1.1rem; }
.crumbs a { color: var(--ink-3); text-decoration: none; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; }
.tool-head h1 { max-width: 22ch; }
.tool-head .lede { margin-top: .4rem; }

.calc {
  display: grid; grid-template-columns: minmax(300px, 380px) 1fr;
  gap: 0; border: 1px solid var(--line-2); border-radius: var(--radius);
  background: var(--card); overflow: hidden;
  margin: 1rem 0 2.4rem;
}
@media (max-width: 820px) { .calc { grid-template-columns: 1fr; } }

.calc-inputs {
  padding: clamp(1.2rem, 2.5vw, 1.7rem);
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 1.05rem;
}
@media (max-width: 820px) { .calc-inputs { border-right: 0; border-bottom: 1px solid var(--line); } }

.calc-results { padding: clamp(1.2rem, 2.5vw, 1.8rem); min-width: 0; }
@media (min-width: 821px) {
  /* results travel with you down long forms; JS sets --results-top so the
     column pins with its bottom visible when it's taller than the screen */
  .calc-results {
    position: sticky; align-self: start;
    top: var(--results-top, .5rem);
  }
}
.ym-pair { display: flex; gap: .5rem; }
.ym-pair .input-wrap { flex: 1; }

.field label {
  display: block; font-size: .84rem; font-weight: 560; margin-bottom: .35rem;
}
.field .help { font-size: .78rem; color: var(--ink-3); margin-top: .3rem; }
.input-wrap {
  display: flex; align-items: center;
  border: 1px solid var(--line-2); border-radius: var(--radius);
  background: var(--paper);
  transition: border-color .15s ease;
}
.input-wrap:focus-within { border-color: var(--brand-mark); }
.input-wrap .affix {
  padding: 0 .65rem; color: var(--ink-3); font-size: .88rem; user-select: none;
}
.input-wrap .affix:first-child { border-right: 1px solid var(--line); }
.input-wrap .affix:last-child  { border-left: 1px solid var(--line); }
.input-wrap input, .input-wrap select {
  flex: 1; min-width: 0; border: 0; background: transparent; color: var(--ink);
  font: 480 1rem/1.2 var(--font-ui);
  font-variant-numeric: tabular-nums;
  padding: .62rem .7rem; outline: none;
}
.input-wrap select { cursor: pointer; appearance: auto; }
input[type="range"] {
  width: 100%; margin: .55rem 0 0; accent-color: var(--brand-mark);
}
.field.invalid .input-wrap { border-color: #c0392b; }
.field .err { display: none; font-size: .78rem; color: #c0392b; margin-top: .3rem; }
.field.invalid .err { display: block; }

.calc-actions { margin-top: .3rem; }
.btn-ghost {
  appearance: none; background: none; border: 0; cursor: pointer;
  color: var(--ink-3); font: 480 .84rem/1 var(--font-ui);
  padding: .3rem 0; text-decoration: underline; text-underline-offset: 3px;
}
.btn-ghost:hover { color: var(--ink); }

/* Results */
.hero-figure { margin: 0 0 .2rem; }
.hero-figure .label { font-size: .84rem; color: var(--ink-2); font-weight: 520; }
.hero-figure .value {
  font-family: var(--font-ui); font-weight: 660;
  font-size: clamp(2.2rem, 5vw, 3rem); line-height: 1.1;
  letter-spacing: -0.02em; color: var(--ink);
}
.hero-figure .value small { font-size: .45em; font-weight: 520; color: var(--ink-2); letter-spacing: 0; }
.interpret { color: var(--ink-2); font-size: .95rem; max-width: 52ch; margin: .5rem 0 0; }
.interpret strong { color: var(--ink); font-weight: 600; }

.stat-row {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: .8rem; margin: 1.4rem 0;
}
.stat {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: .8rem .9rem;
  display: flex; flex-direction: column;
  position: relative;
}
.info-btn {
  position: absolute; top: .45rem; right: .45rem;
  width: 18px; height: 18px; border-radius: 50%;
  border: 1px solid var(--line-2); background: transparent;
  color: var(--ink-3); font: 600 11px/1 var(--font-ui);
  cursor: help; display: inline-flex; align-items: center; justify-content: center;
  padding: 0;
}
.info-btn:hover, .info-btn[aria-expanded="true"] { color: var(--brand); border-color: var(--brand-mark); }
.info-pop {
  position: absolute; z-index: 30; right: 0; top: calc(100% + 6px);
  width: min(260px, 78vw);
  background: var(--ink); color: var(--paper);
  border-radius: 6px; padding: .6rem .75rem;
  font-size: .78rem; line-height: 1.5; font-weight: 440;
  display: none;
}
.stat:has(.info-btn:hover) .info-pop,
.stat:has(.info-btn:focus-visible) .info-pop,
.stat:has(.info-btn[aria-expanded="true"]) .info-pop { display: block; }
@media print { .info-btn, .info-pop { display: none !important; } }
.stat .k { font-size: .74rem; color: var(--ink-3); font-weight: 540; letter-spacing: .02em; margin: 0; padding-right: 1.2rem; }
.stat .v {
  font-size: 1.18rem; font-weight: 620;
  margin: auto 0 0; padding-top: .35rem; /* values bottom-align across the row */
  font-variant-numeric: tabular-nums; letter-spacing: -0.01em;
}

/* ---- Interview chips (yes / no / not sure) ---- */
.chips { display: flex; flex-wrap: wrap; gap: .45rem; }
.chips label {
  position: relative; cursor: pointer;
  font: 520 .84rem/1 var(--font-ui);
  border: 1px solid var(--line-2); border-radius: 999px;
  padding: .5rem .85rem; color: var(--ink-2);
  user-select: none;
}
.chips input { position: absolute; opacity: 0; pointer-events: none; }
.chips label:hover { border-color: var(--ink-3); color: var(--ink); }
.chips label:has(input:checked) {
  background: var(--brand); border-color: var(--brand);
  color: var(--paper);
}
.chips label:has(input:focus-visible) { outline: 2px solid var(--brand-mark); outline-offset: 2px; }
.assume { font-size: .78rem; color: var(--ink-3); margin: .4rem 0 0; }
.assume strong { color: var(--ink-2); }
.subfields { display: grid; gap: 1.05rem; padding: .9rem 0 .2rem .9rem; border-left: 2px solid var(--line); margin-top: .6rem; }
.subfields[hidden] { display: none; }
.q-note { font-size: .8rem; color: var(--ink-3); }

/* ---- Savings opportunities ---- */
.save-panel { margin: 2.4rem 0; }
.save-panel > .lede { margin-bottom: 1.2rem; }
.save-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }
.save-card {
  border: 1px solid var(--line-2); border-radius: var(--radius);
  background: var(--card); padding: 1.1rem 1.2rem;
  display: flex; flex-direction: column; gap: .35rem;
}
.save-card h3 { margin: 0; font-size: .98rem; }
.save-card .impact { font-size: 1.25rem; font-weight: 650; font-variant-numeric: tabular-nums; color: var(--brand); }
.save-card p { font-size: .85rem; color: var(--ink-2); margin: 0; flex: 1; }
.save-card .sunset {
  font: 600 .7rem/1 var(--font-ui); letter-spacing: .05em; text-transform: uppercase;
  color: var(--s3); margin-top: .5rem;
}
.save-card .phase { font-size: .78rem; color: var(--ink-3); margin-top: .3rem; }

/* ---- Mortgage Lab: scenario events ---- */
.ev-add { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: .4rem; }
.ev-add button {
  appearance: none; cursor: pointer;
  font: 560 .8rem/1 var(--font-ui);
  color: var(--brand); background: var(--brand-wash);
  border: 1px solid var(--line-2); border-radius: 999px;
  padding: .5rem .85rem;
}
.ev-add button:hover { border-color: var(--brand-mark); }
.ev-list { display: grid; gap: .7rem; margin-top: .8rem; }
.ev-row {
  border: 1px solid var(--line-2); border-left: 3px solid var(--brand-mark);
  border-radius: var(--radius); background: var(--paper);
  padding: .8rem .9rem;
}
.ev-row .ev-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: .6rem;
  margin-bottom: .55rem;
}
.ev-row .ev-title { font-size: .82rem; font-weight: 640; }
.ev-row .ev-del {
  appearance: none; border: 0; background: none; cursor: pointer;
  color: var(--ink-3); font: 480 .78rem/1 var(--font-ui);
  text-decoration: underline; text-underline-offset: 2px;
}
.ev-row .ev-del:hover { color: #c0392b; }
.ev-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: .6rem; }
.ev-fields .field label { font-size: .74rem; }
.ev-fields .input-wrap input, .ev-fields .input-wrap select { padding: .45rem .55rem; font-size: .9rem; }
.ev-note { font-size: .74rem; color: var(--ink-3); margin: .5rem 0 0; }

.impact-list { display: grid; gap: .5rem; margin-top: .6rem; }
.impact-row {
  display: flex; justify-content: space-between; gap: 1rem; align-items: baseline;
  border-bottom: 1px solid var(--line); padding-bottom: .5rem;
  font-size: .88rem;
}
.impact-row .n { font-weight: 640; font-variant-numeric: tabular-nums; color: var(--brand); white-space: nowrap; }
.impact-row .n.bad { color: var(--s3); }

.verdict {
  border: 1px solid var(--line-2); border-left: 3px solid var(--brand-mark);
  border-radius: var(--radius); background: var(--card);
  padding: 1rem 1.1rem; margin-top: .8rem; font-size: .92rem;
}
.verdict strong { color: var(--brand); }

/* ---- Sticky live summary (long interview pages) ---- */
.sticky-summary {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  background: var(--card);
  border-top: 1px solid var(--line-2);
  padding: .6rem clamp(1rem, 4vw, 2rem);
  display: flex; align-items: baseline; gap: 1.4rem; flex-wrap: wrap;
  transform: translateY(110%); transition: transform .2s ease;
  box-shadow: 0 -6px 24px rgba(0,0,0,.06);
}
.sticky-summary.show { transform: translateY(0); }
.sticky-summary .ss-main { font-weight: 680; font-size: 1.15rem; font-variant-numeric: tabular-nums; color: var(--brand); }
.sticky-summary .ss-item { font-size: .84rem; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.sticky-summary .ss-item strong { color: var(--ink); font-weight: 640; }
.sticky-summary .ss-label { font: 620 .68rem/1 var(--font-ui); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
@media print { .sticky-summary { display: none; } }

/* ---- Sources & vintage panel ---- */
.sources {
  border: 1px solid var(--line-2); border-radius: var(--radius);
  background: var(--card); padding: 1rem 1.2rem; margin: 1.6rem 0;
  font-size: .87rem;
}
.sources .kicker { margin-bottom: .5rem; }
.sources ul { margin: .4rem 0 0; padding-left: 1.1rem; }
.sources li { margin: .25rem 0; }

/* ---- Charts ---- */
.chart-block { margin: 1.6rem 0 0; }
.chart-block .chart-title {
  font-size: .86rem; font-weight: 600; margin: 0 0 .6rem;
}
.chart { position: relative; }
.chart svg { width: 100%; height: auto; font-family: var(--font-ui); }
.chart .tick { fill: var(--ink-3); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart .gridline { stroke: var(--chart-grid); stroke-width: 1; }
.chart .axisline { stroke: var(--chart-axis); stroke-width: 1; }
.chart .direct-label { font-size: 11.5px; font-weight: 600; fill: var(--ink-2); }

.legend {
  display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; margin: .55rem 0 0;
  font-size: .8rem; color: var(--ink-2);
}
.legend .li { display: inline-flex; align-items: center; gap: .45rem; }
.legend .swatch { width: 10px; height: 10px; border-radius: 3px; }
.legend .val { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }

.viz-tip {
  position: absolute; pointer-events: none; z-index: 5;
  background: var(--ink); color: var(--paper);
  border-radius: 5px; padding: .45rem .6rem;
  font-size: .76rem; line-height: 1.45;
  opacity: 0; transition: opacity .1s ease;
  white-space: nowrap;
}
.viz-tip .t-head { font-weight: 640; margin-bottom: .1rem; }
.viz-tip .t-row { display: flex; align-items: center; gap: .4rem; }
.viz-tip .t-row .swatch { width: 8px; height: 8px; border-radius: 2px; flex: none; }
.viz-tip .t-row .n { font-variant-numeric: tabular-nums; font-weight: 600; margin-left: auto; padding-left: .8rem; }

/* Ranked bars (emphasis: leader in accent, rest recede) */
.rank-list { display: grid; gap: .55rem; }
.rank-row {
  display: grid; grid-template-columns: minmax(140px, 220px) 1fr 90px;
  align-items: center; gap: .8rem;
}
.rank-name { font-size: .84rem; font-weight: 540; line-height: 1.3; }
.rank-note { display: block; font-size: .72rem; color: var(--ink-3); font-weight: 440; }
.rank-track { background: var(--brand-wash); border-radius: 4px; height: 18px; }
.rank-bar { height: 100%; border-radius: 4px; background: var(--ink-3); opacity: .55; }
.rank-row.lead .rank-bar { background: var(--brand-mark); opacity: 1; }
.rank-row.lead .rank-name { color: var(--brand); }
.rank-val { text-align: right; font-size: .88rem; font-weight: 620; font-variant-numeric: tabular-nums; }

/* Breakdown bar */
.bd-bar { display: flex; gap: 2px; height: 30px; border-radius: 5px; overflow: hidden; margin: .3rem 0 .2rem; }
.bd-seg { min-width: 3px; cursor: default; transition: opacity .12s ease; }
.bd-bar:hover .bd-seg:not(:hover) { opacity: .55; }

/* ---- Data tables ---- */
details.sched { margin: 1.4rem 0 0; border-top: 1px solid var(--line); padding-top: .9rem; }
details.sched summary {
  cursor: pointer; font-size: .88rem; font-weight: 600; color: var(--ink-2);
  list-style: none; display: inline-flex; align-items: center; gap: .45rem;
}
details.sched summary::-webkit-details-marker { display: none; }
details.sched summary::before { content: "+"; font-weight: 480; color: var(--ink-3); }
details.sched[open] summary::before { content: "−"; }
details.sched summary:hover { color: var(--ink); }

.tbl-wrap { overflow-x: auto; margin-top: .8rem; }
table.data {
  width: 100%; border-collapse: collapse; font-size: .84rem;
}
table.data th, table.data td {
  text-align: right; padding: .45rem .7rem;
  border-bottom: 1px solid var(--line);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
table.data th {
  font-weight: 600; color: var(--ink-2); font-size: .76rem;
  letter-spacing: .03em; border-bottom-color: var(--line-2);
}
table.data th:first-child, table.data td:first-child { text-align: left; }
table.data tbody tr:hover { background: var(--brand-wash); }

/* ---- Explainer prose ---- */
.prose { max-width: var(--w-prose); }
.prose h2 { margin-top: 2.2rem; }
.prose h3 { margin-top: 1.6rem; }
.prose code {
  font: 480 .86em/1.4 ui-monospace, "Cascadia Code", Consolas, monospace;
  background: var(--brand-wash); border: 1px solid var(--line);
  border-radius: 4px; padding: .08em .35em;
}
.prose .formula {
  border-left: 3px solid var(--brand-mark);
  background: var(--card); border-radius: 0 var(--radius) var(--radius) 0;
  padding: .9rem 1.1rem; margin: 1.2rem 0;
  font-size: .95rem;
}
.note {
  border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: .9rem 1.1rem; font-size: .88rem; color: var(--ink-2);
  margin: 1.4rem 0;
}

/* ---- Downloads ---- */
.dl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.dl-card {
  border: 1px solid var(--line-2); border-radius: var(--radius);
  background: var(--card); padding: 1.2rem 1.3rem;
  display: flex; flex-direction: column; gap: .4rem;
}
.dl-card h3 { margin: 0; font-size: 1.02rem; }
.dl-card p { font-size: .87rem; color: var(--ink-2); margin: 0; flex: 1; }
.dl-card .meta { font-size: .76rem; color: var(--ink-3); }
.dl-card a.dl-btn {
  margin-top: .6rem; align-self: flex-start;
  font: 560 .84rem/1 var(--font-ui);
  color: var(--brand); text-decoration: none;
  border: 1px solid var(--line-2); border-radius: 999px;
  padding: .5rem .95rem;
}
.dl-card a.dl-btn:hover { border-color: var(--brand-mark); color: var(--brand); background: var(--brand-wash); }

/* ---- Ad slot (clearly labeled, fixed height to avoid layout shift) ---- */
.ad-slot {
  margin: 2.4rem 0;
  border: 1px dashed var(--line-2); border-radius: var(--radius);
  min-height: 120px; max-height: 300px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: .35rem; padding: 1.2rem; text-align: center;
}
.ad-slot .ad-tag {
  font: 620 .64rem/1 var(--font-ui); letter-spacing: .16em;
  text-transform: uppercase; color: var(--ink-3);
}
.ad-slot .ad-body { font-size: .84rem; color: var(--ink-3); max-width: 40ch; }
.ad-slot .ad-body a { color: var(--ink-2); }

/* ---- Related tools ---- */
#excel-chip { margin-top: 1.4rem; }
.kicker.tight { margin: 0; }
.kicker.gap { margin: .6rem 0 0; }
.related { margin: 2.6rem 0 0; }
.related h2 { font-size: 1.2rem; }
.related-list { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: .8rem; padding: 0; list-style: none; }
.related-list a {
  display: inline-block; text-decoration: none;
  font-size: .86rem; color: var(--ink-2);
  border: 1px solid var(--line-2); border-radius: 999px;
  padding: .45rem .9rem;
}
.related-list a:hover { color: var(--brand); border-color: var(--brand-mark); }

/* ---- Comments ---- */
.comments { margin: 2.6rem 0 0; border-top: 1px solid var(--line); padding-top: 1.6rem; max-width: var(--w-prose); }
.comments h2 { font-size: 1.2rem; }
.c-form { display: grid; gap: .6rem; margin: 1rem 0 1.4rem; }
.c-form textarea { width: 100%; border: 0; background: transparent; color: var(--ink); font: 480 .95rem/1.5 var(--font-ui); padding: .6rem .7rem; outline: none; resize: vertical; }
.c-submit {
  justify-self: start; appearance: none; cursor: pointer;
  font: 600 .88rem/1 var(--font-ui);
  color: var(--paper); background: var(--brand);
  border: 0; border-radius: 999px; padding: .65rem 1.2rem;
}
.c-submit:hover { background: var(--brand-mark); }
.c-submit:disabled { opacity: .6; cursor: wait; }
.c-list { display: grid; gap: 1rem; }
.c-item { border-bottom: 1px solid var(--line); padding-bottom: .9rem; }
.c-meta { font-size: .8rem; font-weight: 640; margin: 0 0 .25rem; }
.c-meta span { color: var(--ink-3); font-weight: 440; }
.c-body { font-size: .92rem; margin: 0; white-space: pre-wrap; overflow-wrap: break-word; }
@media print { .comments { display: none; } }

/* ---- Footer ---- */
.site-footer {
  margin-top: clamp(3rem, 8vw, 5rem);
  border-top: 1px solid var(--line);
  padding: 2.2rem 0 2.6rem;
  font-size: .86rem; color: var(--ink-2);
}
.site-footer .cols {
  display: flex; flex-wrap: wrap; gap: 2rem 3.5rem; justify-content: space-between;
}
.site-footer .disclosure { max-width: 52ch; }
.site-footer .disclosure strong { color: var(--ink); }
.site-footer nav { display: flex; gap: 1.3rem; flex-wrap: wrap; }
.site-footer nav a { color: var(--ink-2); text-decoration: none; }
.site-footer nav a:hover { color: var(--ink); text-decoration: underline; }
.site-footer .fineprint { margin-top: 1.6rem; font-size: .78rem; color: var(--ink-3); }

/* ---- Embeddable badge ---- */
.embed-body { padding: 0; margin: 0; background: transparent; }
.embed-card {
  display: flex; flex-direction: column; gap: .45rem;
  background: var(--card); border: 1px solid var(--line-2); border-radius: 8px;
  padding: .85rem 1rem; text-decoration: none; color: var(--ink);
  max-width: 320px; font-family: var(--font-ui);
}
.embed-card:hover { border-color: var(--brand-mark); }
.embed-head {
  display: flex; align-items: center; gap: .45rem;
  font: 640 .78rem/1 var(--font-ui); color: var(--ink-2);
}
.embed-head svg { width: 16px; height: 16px; color: var(--brand); }
.embed-rates { display: flex; gap: 1.6rem; }
.embed-rate { display: flex; flex-direction: column; }
.embed-rate strong { font-size: 1.5rem; font-weight: 680; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; color: var(--brand); }
.embed-rate small { font-size: .7rem; color: var(--ink-3); font-weight: 540; }
.embed-foot { font-size: .68rem; color: var(--ink-3); }
.embed-snippet {
  display: block; background: var(--card); border: 1px solid var(--line-2);
  border-radius: var(--radius); padding: .9rem 1rem;
  font: 480 .78rem/1.6 ui-monospace, Consolas, monospace;
  white-space: pre-wrap; word-break: break-all; user-select: all;
}

/* ---- Motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

@media print {
  .site-header, .site-footer, .ad-slot, .related, .theme-toggle,
  input[type="range"], .calc-actions, .ev-add, .ev-del, .skip-link { display: none !important; }
  :root { --paper: #fff; --card: #fff; }
  body { font-size: 13px; }
  .calc { display: block; border: 0; }
  .calc-inputs { border: 0; border-bottom: 1px solid var(--line-2); padding-bottom: 1rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: .7rem 1.2rem; }
  .calc-results { padding-top: 1rem; }
  .chart-block, .stat-row, .verdict, .impact-list { break-inside: avoid; }
  details.sched { display: block; }
  details.sched summary::before { content: ""; }
  .prose { max-width: none; }
  a { color: inherit; text-decoration: none; }
}