/* Best Water Softeners Missouri - field-guide aesthetic
   Moss #3f6212 on birch #f6f5ef, botanical-manual typography.
   Headlines/UI: Epilogue. Body: Source Serif 4. */

:root {
  --moss: #3f6212;
  --moss-deep: #2e4a0d;
  --moss-bright: #567d1f;
  --ink: #232b19;
  --ink-soft: #5b6350;
  --birch: #f6f5ef;
  --card: #fcfbf6;
  --wash: #edeee0;
  --line: #ddd8c4;
  --line-strong: #c4bd9f;
  --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --sans: "Epilogue", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--birch);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; }

a { color: var(--moss); text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
a:hover { color: var(--moss-deep); text-decoration-color: var(--moss); }

h1, h2, h3, h4 {
  font-family: var(--sans);
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 0.75rem;
}

h1 { font-size: clamp(2rem, 5.5vw, 3.1rem); font-weight: 800; }
h2 { font-size: clamp(1.45rem, 3.4vw, 2rem); font-weight: 800; }
h3 { font-size: 1.2rem; font-weight: 700; }

p { margin: 0 0 1.35rem; }

.wrap {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.wrap-narrow { max-width: 50rem; margin: 0 auto; padding: 0 1.25rem; }

/* ---------- Labels and small type ---------- */

.kicker {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--moss);
  display: block;
  margin-bottom: 0.9rem;
}

.lede {
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 44rem;
}

.small-note {
  font-size: 0.86rem;
  font-style: italic;
  color: var(--ink-soft);
}

/* ---------- Header ---------- */

.site-head {
  border-bottom: 4px double var(--line-strong);
  background: var(--birch);
}

.site-head .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.75rem;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark { flex: none; display: block; }

.brand-name {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-sub {
  display: block;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--moss);
}

.site-nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 1.4rem;
}

.site-nav a {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover { color: var(--moss-deep); border-bottom-color: var(--line-strong); }
.site-nav a[aria-current="page"] { color: var(--moss); border-bottom-color: var(--moss); }

.site-nav .btn { border-bottom: none; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.9rem;
  line-height: 1;
  padding: 0.85rem 1.35rem;
  border-radius: 4px;
  border: 1.5px solid var(--moss);
  background: var(--moss);
  color: var(--birch);
  text-decoration: none;
  cursor: pointer;
  transition: background 140ms ease, color 140ms ease;
}

.btn:hover { background: var(--moss-deep); border-color: var(--moss-deep); color: var(--birch); }

.btn-ghost {
  background: transparent;
  color: var(--moss);
}

.btn-ghost:hover { background: var(--wash); color: var(--moss-deep); }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }

/* ---------- Hero ---------- */

.hero { padding: 4rem 0 3rem; }

.hero .wrap { max-width: 60rem; }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
  margin: 1.6rem 0 0;
  padding: 0.8rem 0 0;
  border-top: 1px solid var(--line);
  font-family: var(--sans);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.hero-meta strong { color: var(--moss); font-weight: 700; }

.hero .btn-row { margin-top: 1.8rem; }

/* ---------- Table of contents card ---------- */

.toc-card {
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-top: 4px double var(--line-strong);
  padding: 1.6rem 1.75rem 1.35rem;
  max-width: 44rem;
  margin: 0 0 3rem;
}

.toc-card h2, .toc-card h3 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--moss);
  margin-bottom: 1rem;
}

.toc-list { list-style: none; margin: 0; padding: 0; }

.toc-list li { margin: 0; }

.toc-line {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.42rem 0;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.98rem;
}

.toc-line:hover .toc-title { color: var(--moss-deep); text-decoration: underline; text-underline-offset: 3px; }

.toc-num {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--moss);
  min-width: 1.6rem;
}

.toc-dots {
  flex: 1;
  border-bottom: 2px dotted var(--line-strong);
  transform: translateY(-5px);
  min-width: 1.5rem;
}

.toc-page {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------- Botanical divider ---------- */

.divider {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin: 3.5rem auto;
  max-width: 26rem;
  color: var(--moss);
}

.divider::before, .divider::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--line-strong);
}

.divider svg { flex: none; }

/* ---------- Sections ---------- */

.section { padding: 3.25rem 0; }

.section-head { max-width: 46rem; margin-bottom: 2.25rem; }

.section-alt {
  background: var(--wash);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ---------- Ranking cards ---------- */

.rank-list { display: grid; gap: 1.4rem; }

.rank-card {
  background: var(--card);
  border: 1px solid var(--line-strong);
  padding: 1.75rem 1.9rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1.6rem;
  position: relative;
}

.rank-card.rank-first {
  border: 2px solid var(--moss);
  box-shadow: 0 2px 0 var(--moss-deep);
}

.rank-plate {
  grid-row: 1 / 3;
  align-self: start;
  text-align: center;
  border: 1.5px solid var(--moss);
  border-radius: 3px;
  padding: 0.5rem 0.7rem 0.4rem;
  min-width: 3.4rem;
  background: var(--birch);
}

.rank-plate .no {
  display: block;
  font-family: var(--sans);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--moss);
}

.rank-plate .num {
  display: block;
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--moss-deep);
}

.rank-head { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.9rem; }

.rank-head h3 { margin: 0; font-size: 1.35rem; }

.badge {
  font-family: var(--sans);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--birch);
  background: var(--moss);
  padding: 0.32rem 0.6rem;
  border-radius: 2px;
}

.rank-body { grid-column: 2; }

.rank-body p { margin-bottom: 1rem; }

.spec-list {
  margin: 0 0 1.1rem;
  padding: 0.9rem 0 0.2rem;
  border-top: 1px dotted var(--line-strong);
  display: grid;
  gap: 0.3rem;
}

.spec-list div { display: flex; gap: 0.7rem; align-items: baseline; }

.spec-list dt {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--moss);
  min-width: 8.2rem;
  flex: none;
}

.spec-list dd { margin: 0; font-size: 0.95rem; color: var(--ink); }

/* ---------- Guide chapters ---------- */

.guide-layout { max-width: 50rem; margin: 0 auto; padding: 0 1.25rem; }

.chapter { padding: 2.6rem 0 0.6rem; }

.ch-plate {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  border-top: 4px double var(--line-strong);
  padding-top: 1.4rem;
  margin-bottom: 0.4rem;
}

.ch-plate .ch-word {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--moss);
}

.ch-plate .ch-roman {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.4rem;
  color: var(--moss-deep);
}

.chapter h2 { margin-bottom: 1.4rem; }

.chapter-body { font-size: 1.08rem; line-height: 1.95; }

.chapter-body ul, .chapter-body ol { margin: 0 0 1.4rem; padding-left: 1.4rem; }

.chapter-body li { margin-bottom: 0.55rem; }

.chapter-body li::marker { color: var(--moss); font-weight: 700; }

/* Marginal notes: small italic asides. Inset on small screens,
   floated into a true margin column on wide screens. */

.marginal {
  font-size: 0.88rem;
  font-style: italic;
  line-height: 1.65;
  color: var(--ink-soft);
  border-left: 2px solid var(--moss);
  padding: 0.4rem 0 0.4rem 1.05rem;
  margin: 1.9rem 0;
}

.mn-label {
  display: block;
  font-family: var(--sans);
  font-style: normal;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--moss);
  margin-bottom: 0.25rem;
}

@media (min-width: 1120px) {
  .guide-layout { max-width: 67rem; }
  .guide-layout .chapter-body { padding-right: 320px; }
  .guide-layout .marginal {
    float: right;
    clear: right;
    width: 262px;
    margin: 0.25rem -320px 1.3rem 1.6rem;
    border-left: none;
    border-top: 1px solid var(--line-strong);
    padding: 0.7rem 0 0;
  }
}

/* ---------- Summary guide (index) ---------- */

.brief-grid { display: grid; gap: 0.1rem; max-width: 50rem; }

.brief-item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1.2rem;
  padding: 1.4rem 0;
  border-top: 1px dotted var(--line-strong);
}

.brief-item:first-child { border-top: none; }

.brief-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.7rem;
  color: var(--moss);
  line-height: 1;
  padding-top: 0.2rem;
}

.brief-item h3 { margin-bottom: 0.45rem; font-size: 1.08rem; }

.brief-item p { margin-bottom: 0.4rem; font-size: 0.99rem; color: var(--ink); }

.brief-item a { font-family: var(--sans); font-size: 0.82rem; font-weight: 700; }

/* ---------- FAQ ---------- */

.faq-list { max-width: 50rem; display: grid; gap: 0.9rem; }

.faq-list details {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 0 1.4rem;
}

.faq-list details[open] { border-color: var(--line-strong); }

.faq-list summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1rem;
  padding: 1.1rem 2rem 1.1rem 0;
  position: relative;
  color: var(--ink);
}

.faq-list summary::-webkit-details-marker { display: none; }

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 0.2rem;
  top: 50%;
  transform: translateY(-52%);
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--moss);
}

.faq-list details[open] summary::after { content: "-"; }

.faq-list .faq-a { padding: 0 0 1.25rem; border-top: 1px dotted var(--line); }

.faq-list .faq-a p { margin: 1rem 0 0; font-size: 0.99rem; }

/* ---------- Quote form ---------- */

.quote-band {
  background: var(--moss-deep);
  color: var(--birch);
  border-top: 4px double var(--moss);
}

.quote-band .section-head { margin-bottom: 1.8rem; }

.quote-band h2 { color: var(--birch); }

.quote-band .kicker { color: #c9e29a; }

.quote-band p { color: #e4ead4; }

.quote-form {
  max-width: 34rem;
  background: var(--birch);
  border: 1px solid var(--line-strong);
  padding: 1.9rem 1.9rem 1.6rem;
  color: var(--ink);
}

.quote-form .field { margin-bottom: 1.1rem; }

.quote-form label {
  display: block;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--moss);
  margin-bottom: 0.35rem;
}

.quote-form input {
  width: 100%;
  font-family: var(--serif);
  font-size: 1.02rem;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  padding: 0.75rem 0.9rem;
}

.quote-form input:focus {
  outline: 2px solid var(--moss);
  outline-offset: 1px;
  border-color: var(--moss);
}

.quote-form .btn { width: 100%; padding: 1rem 1.35rem; font-size: 0.95rem; }

.form-status { margin: 0.9rem 0 0; font-size: 0.93rem; display: none; }

.form-status.show { display: block; }

.form-error { color: #8a2f12; font-style: italic; }

.form-fallback { color: var(--ink); }

.form-fallback a { font-weight: 700; white-space: nowrap; }

.form-success {
  text-align: center;
  padding: 0.6rem 0 0.4rem;
}

.form-success h3 { color: var(--moss-deep); margin-bottom: 0.5rem; }

.form-success p { color: var(--ink-soft); margin-bottom: 0; }

.form-fineprint {
  margin: 1rem 0 0;
  font-size: 0.8rem;
  font-style: italic;
  color: var(--ink-soft);
}

/* ---------- CTA strip (guide pages) ---------- */

.cta-strip {
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--moss);
  padding: 1.5rem 1.7rem;
  margin: 3rem 0;
}

.cta-strip h3 { margin-bottom: 0.4rem; }

.cta-strip p { margin-bottom: 1rem; color: var(--ink-soft); font-size: 0.98rem; }

/* ---------- Methodology ---------- */

.criteria-list { list-style: none; margin: 0 0 2rem; padding: 0; max-width: 46rem; }

.criteria-list li {
  border-top: 1px dotted var(--line-strong);
  padding: 1.25rem 0;
  display: grid;
  grid-template-columns: 4.4rem 1fr;
  gap: 1.2rem;
}

.criteria-list li:last-child { border-bottom: 1px dotted var(--line-strong); }

.criteria-weight {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--moss);
  padding-top: 0.1rem;
}

.criteria-list h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }

.criteria-list p { margin: 0; font-size: 0.97rem; color: var(--ink-soft); }

blockquote.editorial {
  margin: 2.2rem 0;
  padding: 1.4rem 1.7rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--moss);
  font-style: italic;
  color: var(--ink);
}

blockquote.editorial p { margin: 0; }

/* ---------- Footer ---------- */

.site-foot {
  margin-top: 3.5rem;
  border-top: 4px double var(--line-strong);
  background: var(--birch);
  padding: 2.6rem 0 2.8rem;
}

.foot-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
  align-items: flex-start;
  margin-bottom: 1.8rem;
}

.foot-brand { max-width: 22rem; }

.foot-nav { display: flex; flex-wrap: wrap; gap: 0.3rem 1.6rem; margin-left: auto; }

.foot-nav a {
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}

.foot-nav a:hover { color: var(--moss-deep); text-decoration: underline; }

.disclosure {
  border-top: 1px dotted var(--line-strong);
  padding-top: 1.3rem;
  font-size: 0.83rem;
  font-style: italic;
  color: var(--ink-soft);
  max-width: 52rem;
}

.copyline {
  margin-top: 0.9rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  .hero { padding: 2.6rem 0 2.2rem; }
  .section { padding: 2.4rem 0; }
  .rank-card { grid-template-columns: 1fr; padding: 1.4rem 1.25rem; }
  .rank-plate { grid-row: auto; justify-self: start; display: inline-flex; align-items: baseline; gap: 0.5rem; padding: 0.35rem 0.7rem; }
  .rank-plate .num { font-size: 1.3rem; }
  .rank-body { grid-column: 1; }
  .spec-list dt { min-width: 7rem; }
  .brief-item { grid-template-columns: 2.2rem 1fr; gap: 0.9rem; }
  .site-nav { margin-left: 0; }
  .quote-form { padding: 1.4rem 1.2rem 1.2rem; }
}