/* ==========================================================================
   Top Water Treatment Missouri - 2026 Edition
   Bold amber listicle theme on warm paper
   ========================================================================== */

:root {
  --amber: #b45309;
  --amber-deep: #8a3f06;
  --amber-tint: #f6e8d3;
  --amber-wash: #fdf3e2;
  --paper: #fbf7f0;
  --card: #fffdf8;
  --ink: #1b1410;
  --ink-soft: #5c4e40;
  --line: #e7dac3;
  --line-strong: #d9c6a4;
  --shadow: rgba(180, 83, 9, 0.14);
  --success-bg: #e9f2e1;
  --success-line: #4c7a3d;
  --success-ink: #2b471f;
  --error-bg: #fcebe4;
  --error-line: #b3452f;
  --error-ink: #79271a;
  --font-display: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
  --font-body: "Open Sans", "Helvetica Neue", Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
}

::selection {
  background: var(--amber-tint);
  color: var(--ink);
}

img,
svg {
  max-width: 100%;
  display: inline-block;
  vertical-align: middle;
}

a {
  color: var(--amber);
}

a:hover {
  color: var(--amber-deep);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  color: var(--ink);
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
  z-index: 100;
  font-family: var(--font-display);
}

.skip-link:focus {
  left: 8px;
  top: 8px;
}

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

.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 0.75rem 1.45rem;
  border-radius: 10px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-amber {
  background: var(--amber);
  color: #fff6ea;
  box-shadow: 4px 4px 0 var(--shadow);
}

.btn-amber:hover {
  background: var(--amber-deep);
  color: #fff6ea;
}

.btn-outline {
  background: transparent;
  color: var(--amber-deep);
  border-color: var(--amber);
}

.btn-outline:hover {
  background: var(--amber-tint);
  color: var(--amber-deep);
}

.btn-light {
  background: #fff6ea;
  color: var(--amber-deep);
}

.btn-light:hover {
  background: var(--paper);
  color: var(--amber-deep);
}

.btn-ghost {
  background: transparent;
  color: #fff6ea;
  border-color: rgba(255, 246, 234, 0.75);
}

.btn-ghost:hover {
  background: rgba(255, 246, 234, 0.12);
  color: #fff6ea;
}

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

.site-head {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--paper);
  border-top: 6px solid var(--amber);
  border-bottom: 2px solid var(--line);
}

.head-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 20px;
  max-width: 1080px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.1;
  letter-spacing: 0.01em;
}

.brand-name span {
  display: block;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

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

.site-nav a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--ink);
}

.site-nav a:hover {
  color: var(--amber-deep);
}

.site-nav .btn {
  padding: 0.55rem 1.1rem;
  color: #fff6ea;
}

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

.hero {
  padding: 4.2rem 0 3.6rem;
  background: radial-gradient(circle at 88% 12%, rgba(180, 83, 9, 0.08), transparent 55%);
  border-bottom: 2px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: center;
}

.mega {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 0.82;
  user-select: none;
}

.mega-top {
  font-size: clamp(3.2rem, 8vw, 5.6rem);
  letter-spacing: 0.06em;
  color: var(--ink);
}

.mega-7 {
  font-size: clamp(9rem, 21vw, 15rem);
  color: var(--amber);
  text-shadow: 10px 10px 0 rgba(180, 83, 9, 0.16);
}

@supports (-webkit-text-stroke: 2px #000) {
  .mega-top {
    color: transparent;
    -webkit-text-stroke: 3px var(--ink);
  }
}

.ribbon {
  position: relative;
  display: inline-block;
  z-index: 1;
  background: var(--amber);
  color: #fff6ea;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.92rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.55rem 1.5rem;
  transform: rotate(-2deg);
  margin-bottom: 1.3rem;
  box-shadow: 3px 4px 0 rgba(27, 20, 16, 0.15);
}

.ribbon::before,
.ribbon::after {
  content: "";
  position: absolute;
  top: 0.5rem;
  width: 1.7rem;
  height: 100%;
  background: var(--amber-deep);
  z-index: -1;
}

.ribbon::before {
  left: -1.15rem;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%, 42% 50%);
}

.ribbon::after {
  right: -1.15rem;
  clip-path: polygon(0 0, 100% 0, 58% 50%, 100% 100%, 0 100%);
}

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 0.9rem;
}

.hero .lede {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 56ch;
  margin-bottom: 1.5rem;
}

.hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-bottom: 1.6rem;
}

.hero-meta {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  list-style: none;
}

.hero-meta li {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  border: 1.5px solid var(--line-strong);
  background: var(--card);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
}

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

.section {
  padding: 3.6rem 0;
  scroll-margin-top: 90px;
}

.section + .section {
  border-top: 2px solid var(--line);
}

.sec-head {
  margin-bottom: 2rem;
}

.kicker {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.4rem;
}

.kicker::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 4px;
  background: var(--amber);
  border-radius: 2px;
  margin-right: 0.6rem;
  vertical-align: 0.18em;
}

.sec-head h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.3rem);
  font-weight: 800;
}

.sec-head p {
  color: var(--ink-soft);
  max-width: 62ch;
  margin-top: 0.6rem;
}

/* --------------------------------------------------------------------------
   Rank cards
   -------------------------------------------------------------------------- */

.rank-list {
  display: grid;
  gap: 1.7rem;
}

.rank-card {
  display: grid;
  grid-template-columns: 136px 1fr;
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 16px;
  box-shadow: 7px 7px 0 var(--shadow);
  overflow: hidden;
  scroll-margin-top: 100px;
}

.rank-card.is-top {
  border-color: var(--amber);
  border-width: 3px;
  box-shadow: 9px 9px 0 rgba(180, 83, 9, 0.24);
}

.rank-num {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 1.5rem 0.5rem;
  border-right: 2px solid var(--line);
  background: linear-gradient(180deg, var(--amber-wash), transparent 75%);
}

.rank-num span {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(3.4rem, 6vw, 5.2rem);
  line-height: 0.9;
  color: var(--amber);
}

@supports (-webkit-text-stroke: 2px #000) {
  .rank-num span {
    color: transparent;
    -webkit-text-stroke: 2.5px var(--amber);
  }
}

.rank-card.is-top .rank-num {
  background: var(--amber-tint);
  border-right-color: var(--amber);
}

.rank-card.is-top .rank-num span {
  color: var(--amber);
  -webkit-text-stroke: 0;
}

.rank-body {
  padding: 1.55rem 1.8rem 1.7rem;
  min-width: 0;
}

.rank-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem 0.9rem;
  margin-bottom: 1.05rem;
}

.rank-head h3 {
  font-size: clamp(1.45rem, 2.4vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.pick-badge {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--amber);
  color: #fff6ea;
  border-radius: 999px;
  padding: 0.32rem 0.85rem;
}

.cat-badge {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border: 1.5px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
}

.site-link {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--amber-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--amber);
}

.site-link:hover {
  color: var(--amber);
}

/* Spec table inside each card */

.spec {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: var(--amber-wash);
  overflow: hidden;
  margin-bottom: 1.15rem;
}

.spec > div {
  padding: 0.75rem 1rem 0.85rem;
  border-left: 1.5px solid var(--line);
  min-width: 0;
}

.spec > div:first-child {
  border-left: 0;
}

.spec dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber-deep);
  margin-bottom: 0.28rem;
}

.spec dd {
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
}

.blurb {
  color: var(--ink-soft);
  font-size: 0.98rem;
  max-width: 78ch;
}

.blurb a {
  font-weight: 600;
}

/* Full-width amber CTA band on the number one card */

.cta-band {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem 1.6rem;
  background: var(--amber);
  color: #fff6ea;
  padding: 1.15rem 1.8rem;
  border-top: 2px solid var(--amber-deep);
}

.cta-band p {
  font-size: 1rem;
  max-width: 52ch;
}

.cta-band strong {
  font-family: var(--font-display);
  font-weight: 800;
  display: block;
  font-size: 1.08rem;
  margin-bottom: 0.15rem;
}

.cta-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Quote panels and forms
   -------------------------------------------------------------------------- */

.quote-panel {
  background: var(--amber-wash);
  border: 2.5px solid var(--amber);
  border-radius: 16px;
  box-shadow: 7px 7px 0 var(--shadow);
  padding: 1.9rem 2rem;
  scroll-margin-top: 100px;
}

.quote-panel h3,
.quote-panel h2 {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 0.4rem;
}

.quote-panel .quote-sub {
  color: var(--ink-soft);
  font-size: 0.97rem;
  max-width: 66ch;
  margin-bottom: 1.3rem;
}

.form-fields {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.95rem;
  margin-bottom: 1.05rem;
}

.form-fields label {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  margin-bottom: 0.35rem;
  color: var(--ink);
}

.form-fields input {
  width: 100%;
  font: inherit;
  font-size: 0.98rem;
  color: var(--ink);
  background: var(--card);
  border: 2px solid var(--line-strong);
  border-radius: 10px;
  padding: 0.72rem 0.9rem;
}

.form-fields input:focus {
  outline: 3px solid rgba(180, 83, 9, 0.28);
  border-color: var(--amber);
}

.quote-form .btn {
  font-size: 1.02rem;
  padding: 0.85rem 1.7rem;
}

.form-note {
  display: inline-block;
  margin-left: 1rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.form-note a {
  font-weight: 700;
}

.form-msg {
  margin-top: 1.05rem;
  border-radius: 10px;
  padding: 0.95rem 1.15rem;
  font-size: 0.97rem;
  font-weight: 600;
}

.form-msg.success {
  background: var(--success-bg);
  border: 2px solid var(--success-line);
  color: var(--success-ink);
}

.form-msg.success a {
  color: var(--success-ink);
}

.form-msg.error {
  background: var(--error-bg);
  border: 2px solid var(--error-line);
  color: var(--error-ink);
}

.form-msg.error a {
  color: var(--error-ink);
}

/* --------------------------------------------------------------------------
   Comparison table
   -------------------------------------------------------------------------- */

.table-wrap {
  overflow-x: auto;
  border: 2px solid var(--line);
  border-radius: 14px;
  background: var(--card);
  box-shadow: 7px 7px 0 var(--shadow);
}

table.compare {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  font-size: 0.93rem;
}

table.compare th,
table.compare td {
  text-align: left;
  padding: 0.85rem 1.05rem;
  vertical-align: top;
}

table.compare thead th {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--paper);
  white-space: nowrap;
}

table.compare tbody tr {
  border-top: 1.5px solid var(--line);
}

table.compare tbody tr:nth-child(even) {
  background: rgba(180, 83, 9, 0.035);
}

table.compare td:first-child {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--amber);
  font-size: 1.05rem;
}

table.compare .row-top {
  background: var(--amber-tint);
}

table.compare .row-top td {
  font-weight: 700;
}

table.compare .row-top td:first-child {
  box-shadow: inset 5px 0 0 var(--amber);
}

.table-note {
  margin-top: 0.9rem;
  font-size: 0.86rem;
  color: var(--ink-soft);
}

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

.faq-list details {
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 12px;
  padding: 1.05rem 1.3rem;
  margin-bottom: 0.85rem;
}

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

.faq-list summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.04rem;
}

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

.faq-list summary::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--amber);
  line-height: 1;
  transition: transform 0.15s ease;
}

.faq-list details[open] summary::after {
  transform: rotate(45deg);
}

.faq-list details p {
  margin-top: 0.75rem;
  color: var(--ink-soft);
  font-size: 0.96rem;
  max-width: 74ch;
}

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

.page-hero {
  padding: 3.4rem 0 2.6rem;
  border-bottom: 2px solid var(--line);
  background: radial-gradient(circle at 85% 15%, rgba(180, 83, 9, 0.07), transparent 55%);
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.7rem);
  font-weight: 800;
  margin-bottom: 0.8rem;
}

.page-hero .lede {
  color: var(--ink-soft);
  font-size: 1.06rem;
  max-width: 64ch;
}

.prose h2 {
  font-size: 1.55rem;
  font-weight: 800;
  margin: 2.3rem 0 0.8rem;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p {
  margin-bottom: 1rem;
  max-width: 74ch;
  color: var(--ink-soft);
}

.prose strong {
  color: var(--ink);
}

.prose ul {
  margin: 0 0 1rem 1.3rem;
  color: var(--ink-soft);
  max-width: 72ch;
}

.prose li {
  margin-bottom: 0.4rem;
}

.callout {
  border-left: 6px solid var(--amber);
  background: var(--amber-wash);
  border-radius: 0 12px 12px 0;
  padding: 1.25rem 1.5rem;
  margin: 1.6rem 0;
}

.callout p {
  margin: 0;
  color: var(--ink);
  font-size: 0.99rem;
}

table.compare td .weight {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--amber-deep);
}

.method-cta {
  margin-top: 2.4rem;
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

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

.site-foot {
  margin-top: 3rem;
  background: var(--ink);
  color: #cbbda9;
  padding: 2.8rem 0 2.2rem;
  border-top: 6px solid var(--amber);
}

.foot-grid {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 1.8rem;
}

.foot-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--paper);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.foot-nav {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
  align-items: center;
}

.foot-nav a {
  color: #e8dcc8;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
}

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

.disclosure {
  font-size: 0.88rem;
  line-height: 1.6;
  max-width: 82ch;
  border-top: 1px solid rgba(231, 218, 195, 0.25);
  padding-top: 1.3rem;
  margin-bottom: 0.9rem;
}

.copyright {
  font-size: 0.82rem;
  color: #9e8f7a;
}

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

@media (max-width: 920px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }

  .mega {
    flex-direction: row;
    align-items: baseline;
    justify-content: flex-start;
    gap: 0.35em;
  }

  .mega-7 {
    font-size: clamp(6rem, 24vw, 10rem);
  }
}

@media (max-width: 780px) {
  .head-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.7rem;
  }

  .site-nav {
    gap: 1rem;
  }

  .rank-card {
    grid-template-columns: 1fr;
  }

  .rank-num {
    justify-content: flex-start;
    align-items: baseline;
    padding: 0.9rem 1.5rem 0.55rem;
    border-right: 0;
    border-bottom: 2px solid var(--line);
  }

  .rank-num span {
    font-size: 2.7rem;
  }

  .rank-card.is-top .rank-num {
    border-bottom-color: var(--amber);
  }

  .rank-body {
    padding: 1.25rem 1.4rem 1.45rem;
  }

  .spec {
    grid-template-columns: 1fr 1fr;
  }

  .spec > div {
    border-left: 1.5px solid var(--line);
    border-top: 1.5px solid var(--line);
  }

  .spec > div:nth-child(odd) {
    border-left: 0;
  }

  .spec > div:nth-child(-n+2) {
    border-top: 0;
  }

  .form-fields {
    grid-template-columns: 1fr;
  }

  .quote-form .btn {
    width: 100%;
    text-align: center;
  }

  .form-note {
    display: block;
    margin: 0.8rem 0 0;
  }

  .cta-band {
    padding: 1.15rem 1.4rem;
  }

  .cta-actions {
    width: 100%;
  }

  .cta-actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .quote-panel {
    padding: 1.5rem 1.3rem;
  }
}