/*
Theme Name: Miles Chemical Supply
Theme URI: https://www.mileschemical.com
Author: Miles Chemical Company
Author URI: https://www.mileschemical.com
Description: Search-first WordPress theme for Miles Chemical Company — ink, steel, and signal amber on paper white. Built around product lookup by name, CAS number, or part number, with SDS and CoA access, pack-size data, ordering, and the full Distribution / Blending / Environmental / 3PL service set.
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: Proprietary
Text Domain: miles-supply
Tags: business, industrial, light, e-commerce, custom-menu, custom-logo, translation-ready
*/

/* ─── Design Tokens ────────────────────────────────── */
:root {
  /* Documented palette */
  --ink:        #0E1A22;
  --steel:      #40545F;
  --signal:     #F0B429;

  /* Derived neutrals */
  --ink-2:      #16242E;
  --steel-2:    #6B7C86;
  --steel-3:    #94A2AA;
  --paper:      #FFFFFF;
  --wash:       #F1F3F5;
  --wash-2:     #F7F8F9;
  --line:       #DFE3E7;
  --line-2:     #C8CED4;

  /* Interactive */
  --blue:       #1461D2;
  --blue-dark:  #0E4AA6;
  --blue-tint:  #EDF3FD;

  /* Status */
  --green:      #157F4B;
  --red:        #C0392B;
  --signal-dim: #C08D14;
  --signal-tint:#FDF5E3;

  --radius:     3px;
  --radius-lg:  6px;

  --font-body: 'Archivo', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --max-w:       1180px;
  --max-w-wide:  1320px;
  --section-pad: 72px;
}

/* ─── Reset ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

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

.screen-reader-text {
  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:focus {
  position: fixed;
  top: 10px; left: 10px;
  z-index: 999;
  width: auto; height: auto;
  clip: auto;
  padding: 12px 20px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 700;
  border-radius: var(--radius);
}

/* ─── Layout ───────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}
.container--wide { max-width: var(--max-w-wide); }

.section    { padding: var(--section-pad) 0; }
.section--sm{ padding: 44px 0; }
.section--lg{ padding: 104px 0; }
.section--wash   { background: var(--wash-2); }
.section--wash-2 { background: var(--wash); }
.section--ink    { background: var(--ink); color: var(--paper); }
.section--bordered { border-top: 1px solid var(--line); }

/* ─── Typography ────────────────────────────────────── */
h1, h2, h3, h4, h5 { font-weight: 700; letter-spacing: -0.022em; line-height: 1.12; }

h1 { font-size: clamp(30px, 4.4vw, 46px); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: clamp(23px, 3vw, 32px); }
h3 { font-size: clamp(17px, 2vw, 20px); }
h4 { font-size: 15px; }

.display {
  font-size: clamp(32px, 5.4vw, 54px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.035em;
}

p { max-width: 68ch; }

.lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--steel);
  max-width: 56ch;
}

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--steel-2);
}

.mono { font-family: var(--font-mono); }

.text-steel  { color: var(--steel); }
.text-dim    { color: var(--steel-2); }
.text-blue   { color: var(--blue); }
.text-ink    { color: var(--ink); }

a.inline-link {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}
a.inline-link:hover { color: var(--blue-dark); }

/* ─── Buttons ───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  line-height: 1.25;
  transition: background 0.14s, color 0.14s, border-color 0.14s;
  white-space: nowrap;
}

.btn-primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-primary:hover { background: var(--ink-2); }

.btn-blue { background: var(--blue); color: var(--paper); border-color: var(--blue); }
.btn-blue:hover { background: var(--blue-dark); border-color: var(--blue-dark); }

.btn-outline { background: var(--paper); color: var(--ink); border-color: var(--line-2); }
.btn-outline:hover { border-color: var(--ink); }

.btn-signal { background: var(--signal); color: var(--ink); border-color: var(--signal); }
.btn-signal:hover { background: var(--signal-dim); border-color: var(--signal-dim); }

.btn-ghost-light { background: transparent; color: var(--paper); border-color: rgba(255,255,255,0.32); }
.btn-ghost-light:hover { background: rgba(255,255,255,0.1); border-color: var(--paper); }

.btn-sm  { padding: 8px 14px; font-size: 13px; }
.btn-lg  { padding: 15px 30px; font-size: 15px; }
.btn-block { width: 100%; }

/* ─── Utility bar ───────────────────────────────────── */
.utility-bar {
  background: var(--ink);
  color: var(--steel-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
}

.utility-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 34px;
  padding: 6px 0;
  flex-wrap: wrap;
}

.utility-certs { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.utility-certs a { color: var(--steel-3); transition: color 0.14s; }
.utility-certs a:hover { color: var(--paper); }
.utility-certs .dot { color: var(--steel); }

.utility-spacer { flex: 1; }

.utility-emergency {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--signal);
  font-weight: 500;
}
.utility-emergency a { color: var(--signal); }
.utility-emergency a:hover { color: var(--paper); }
.utility-emergency strong { font-weight: 500; }

/* ─── Header ────────────────────────────────────────── */
#site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 36px;
  height: 68px;
}

.brand {
  flex-shrink: 0;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--ink);
  white-space: nowrap;
}
.brand span { color: var(--blue); }
.brand img { max-height: 40px; width: auto; }

.main-nav { display: flex; align-items: center; gap: 30px; }
.main-nav > li { position: relative; }

.main-nav > li > a {
  display: inline-block;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink);
  padding: 24px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.14s, border-color 0.14s;
}
.main-nav > li > a:hover { color: var(--blue); }
.main-nav > li.current-menu-item > a,
.main-nav > li.current-menu-ancestor > a,
.main-nav > li.current-page-ancestor > a {
  border-bottom-color: var(--signal);
}

.main-nav .sub-menu {
  position: absolute;
  top: 100%;
  left: -16px;
  min-width: 246px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(14, 26, 34, 0.13);
  padding: 7px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  transition: opacity 0.16s, transform 0.16s, visibility 0.16s;
}
.main-nav > li:hover > .sub-menu,
.main-nav > li:focus-within > .sub-menu { opacity: 1; visibility: visible; transform: translateY(0); }

.main-nav .sub-menu a {
  display: block;
  padding: 9px 13px;
  font-size: 14px;
  color: var(--steel);
  border-radius: var(--radius);
  transition: background 0.12s, color 0.12s;
}
.main-nav .sub-menu a:hover { background: var(--wash); color: var(--ink); }

.header-spacer { flex: 1; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 9px 10px;
  color: var(--ink);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  margin: 4px 0;
  transition: transform 0.2s, opacity 0.2s;
}
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ─── Hero search ───────────────────────────────────── */
.hero {
  background: var(--wash);
  border-bottom: 1px solid var(--line);
  padding: 68px 0 56px;
}

.hero-title { margin-bottom: 14px; }

.hero-sub {
  font-size: 16px;
  color: var(--steel);
  max-width: 46ch;
  margin-bottom: 30px;
  line-height: 1.55;
}

/* The search control — the centrepiece of the page. */
.search-major {
  display: flex;
  max-width: 640px;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: var(--paper);
  overflow: hidden;
}

.search-major input[type="search"],
.search-major input[type="text"] {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  padding: 17px 18px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ink);
}
.search-major input::placeholder { color: var(--steel-3); }
.search-major input:focus { outline: none; }

.search-major button {
  flex-shrink: 0;
  border: none;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  padding: 0 30px;
  cursor: pointer;
  transition: background 0.14s;
}
.search-major button:hover { background: var(--blue); }

.search-major:focus-within { border-color: var(--blue); }
.search-major:focus-within button { background: var(--blue); }

/* Quick chips under the search */
.chip-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
  max-width: 720px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  padding: 6px 12px;
  font-size: 12.5px;
  color: var(--steel);
  transition: border-color 0.14s, color 0.14s, background 0.14s;
}
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip .chip-label { color: var(--steel-2); }
.chip .chip-value { font-family: var(--font-mono); font-size: 12px; color: var(--ink); }

/* ─── Product table ─────────────────────────────────── */
.table-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.ptable { width: 100%; border-collapse: collapse; }

.ptable thead th {
  background: var(--wash-2);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel-2);
  text-align: left;
  padding: 12px 20px;
  white-space: nowrap;
}

.ptable tbody td {
  border-bottom: 1px solid var(--line);
  padding: 16px 20px;
  vertical-align: middle;
  font-size: 14px;
  color: var(--steel);
}
.ptable tbody tr:last-child td { border-bottom: none; }
.ptable tbody tr { transition: background 0.12s; }
.ptable tbody tr:hover { background: var(--wash-2); }

.ptable .col-product { width: 40%; }
.ptable .col-cas     { width: 15%; }
.ptable .col-packs   { width: 30%; }
.ptable .col-docs    { width: 15%; text-align: right; }

.ptable td.col-docs { text-align: right; }

.p-name {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.012em;
  display: inline-block;
}
a.p-name:hover { color: var(--blue); }

.p-sub {
  display: block;
  font-size: 12.5px;
  color: var(--steel-2);
  font-weight: 400;
  margin-top: 2px;
  letter-spacing: 0;
}

.p-cas   { font-family: var(--font-mono); font-size: 13px; color: var(--steel); white-space: nowrap; }
.p-packs { font-family: var(--font-mono); font-size: 12.5px; color: var(--steel); line-height: 1.5; }
.p-packs .sep { color: var(--line-2); margin: 0 2px; }

/* SDS / CoA action */
.doc-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 6px 11px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink);
  white-space: nowrap;
  transition: border-color 0.14s, background 0.14s;
}
.doc-chip:hover { border-color: var(--ink); background: var(--wash-2); }
.doc-chip .sep { color: var(--line-2); }

/* Empty state */
.table-empty {
  padding: 44px 20px;
  text-align: center;
  color: var(--steel-2);
  font-size: 14.5px;
}
.table-empty strong { color: var(--ink); display: block; margin-bottom: 6px; font-size: 16px; }

/* Result meta line above a table */
.result-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.result-meta .count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel-2);
  letter-spacing: 0.04em;
}

/* ─── Quick cards strip ─────────────────────────────── */
.quick-strip {
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.quick-card {
  display: block;
  padding: 26px 26px 30px;
  border-right: 1px solid var(--line);
  transition: background 0.14s;
}
.quick-card:last-child { border-right: none; }
.quick-card:hover { background: var(--wash-2); }

.tag {
  display: inline-block;
  background: var(--ink);
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 2px;
  margin-bottom: 14px;
}
.tag--signal { background: var(--signal); color: var(--ink); }
.tag--blue   { background: var(--blue); color: var(--paper); }
.tag--quiet  { background: var(--wash); color: var(--steel); }

.quick-card h3 {
  font-size: 16px;
  margin-bottom: 7px;
  color: var(--ink);
}
.quick-card:hover h3 { color: var(--blue); }

.quick-card p {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--blue);
  max-width: 34ch;
}

/* ─── Generic cards & grids ─────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 0.14s, box-shadow 0.14s;
}
a.card:hover { border-color: var(--ink); box-shadow: 0 6px 18px rgba(14,26,34,0.06); }
a.card:hover h3 { color: var(--blue); }

.card h3 { font-size: 16.5px; margin-bottom: 8px; color: var(--ink); }
.card p  { font-size: 14px; color: var(--steel); line-height: 1.58; }

.card-meta {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--steel-2);
  text-transform: uppercase;
}

/* Category tile with count */
.cat-tile {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 128px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color 0.14s, background 0.14s;
}
.cat-tile:hover { border-color: var(--ink); background: var(--wash-2); }
.cat-tile h3 { font-size: 15.5px; color: var(--ink); margin-bottom: 6px; }
.cat-tile p { font-size: 13px; color: var(--steel-2); line-height: 1.5; }
.cat-tile .count {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--blue);
  text-transform: uppercase;
  margin-top: 14px;
}

/* ─── Section headings ──────────────────────────────── */
.section-head { margin-bottom: 28px; }
.section-head .eyebrow { margin-bottom: 10px; }
.section-head h2 { margin-bottom: 10px; }
.section-head p { color: var(--steel); font-size: 15.5px; max-width: 62ch; }

.head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}
.head-row .section-head { margin-bottom: 0; }

/* ─── Page hero (interior) ──────────────────────────── */
.page-hero {
  background: var(--wash-2);
  border-bottom: 1px solid var(--line);
  padding: 42px 0 40px;
}
.page-hero h1 { margin-bottom: 12px; }
.page-hero .lede { margin-bottom: 0; }

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--steel-2);
  margin-bottom: 14px;
}
.breadcrumb a { color: var(--steel-2); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb .sep { color: var(--line-2); margin: 0 7px; }

/* ─── Split layout (content + sidebar) ──────────────── */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 312px;
  gap: 56px;
  align-items: start;
}
.split--reverse { grid-template-columns: 312px minmax(0, 1fr); }

.sidebar { position: sticky; top: 88px; display: flex; flex-direction: column; gap: 16px; }

.side-card {
  background: var(--wash-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
}
.side-card h4 {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel-2);
  margin-bottom: 14px;
}
.side-card p { font-size: 13.5px; color: var(--steel); line-height: 1.6; }

.side-card--signal { background: var(--signal-tint); border-color: #EBD9A8; }
.side-card--signal h4 { color: var(--signal-dim); }

.side-nav { display: flex; flex-direction: column; gap: 1px; }
.side-nav a {
  display: block;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--steel);
  border-radius: var(--radius);
  transition: background 0.12s, color 0.12s;
}
.side-nav a:hover { background: var(--paper); color: var(--ink); }
.side-nav a.is-current {
  background: var(--paper);
  color: var(--ink);
  font-weight: 600;
  box-shadow: inset 2px 0 0 var(--signal);
}

/* ─── Prose ─────────────────────────────────────────── */
.prose { font-size: 16px; line-height: 1.72; color: var(--steel); max-width: 70ch; }
.prose > *:first-child { margin-top: 0; }
.prose h2 { color: var(--ink); margin: 38px 0 14px; }
.prose h3 { color: var(--ink); margin: 28px 0 10px; }
.prose p  { margin-bottom: 17px; }
.prose a  { color: var(--blue); text-decoration: underline; text-underline-offset: 2px; }
.prose a:hover { color: var(--blue-dark); }
.prose strong { color: var(--ink); font-weight: 600; }

.prose ul { margin: 0 0 20px; }
.prose ul li {
  position: relative;
  padding: 5px 0 5px 21px;
  font-size: 15.5px;
}
.prose ul li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 14px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--signal);
}

.prose ol { margin: 0 0 20px; padding-left: 20px; }
.prose ol li { margin-bottom: 8px; font-size: 15.5px; }

.prose blockquote {
  border-left: 3px solid var(--signal);
  padding: 2px 0 2px 20px;
  margin: 26px 0;
  color: var(--ink);
  font-size: 17px;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 1px 5px;
}

.prose table { width: 100%; border-collapse: collapse; margin-bottom: 22px; font-size: 14.5px; }
.prose th, .prose td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); }
.prose thead th { background: var(--wash-2); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel-2); font-weight: 500; }

/* ─── Spec table (product detail) ───────────────────── */
.spec-list { border-top: 1px solid var(--line); }

.spec-row {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 20px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.spec-row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--steel-2);
  padding-top: 2px;
}
.spec-row dd { color: var(--ink); }
.spec-row dd.mono { font-family: var(--font-mono); font-size: 13.5px; }

/* Pack size list */
.pack-list { display: flex; flex-direction: column; gap: 8px; }

.pack-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 15px;
  background: var(--paper);
  font-size: 14px;
}
.pack-item .pack-name { font-family: var(--font-mono); font-size: 13.5px; color: var(--ink); }
.pack-item .pack-note { font-size: 12.5px; color: var(--steel-2); }

/* Document panel */
.doc-panel { display: flex; flex-direction: column; gap: 10px; }

.doc-row {
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  background: var(--paper);
  transition: border-color 0.14s, background 0.14s;
}
a.doc-row:hover { border-color: var(--ink); background: var(--wash-2); }

.doc-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: var(--radius);
  background: var(--wash);
  color: var(--steel);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.doc-icon--signal { background: var(--signal-tint); color: var(--signal-dim); }

.doc-row .doc-body { min-width: 0; flex: 1; }
.doc-row .doc-title { font-size: 14px; font-weight: 600; color: var(--ink); }
.doc-row .doc-note  { font-size: 12.5px; color: var(--steel-2); margin-top: 1px; }
.doc-row .doc-go    { font-family: var(--font-mono); font-size: 11px; color: var(--blue); letter-spacing: 0.05em; }

/* ─── Filter rail ───────────────────────────────────── */
.filter-bar {
  background: var(--wash-2);
  border-bottom: 1px solid var(--line);
}
.filter-tabs {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}
.filter-tab {
  padding: 13px 18px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--steel-2);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color 0.14s, border-color 0.14s;
}
.filter-tab:hover { color: var(--ink); }
.filter-tab.is-active { color: var(--ink); border-bottom-color: var(--signal); font-weight: 600; }

/* ─── CAS index ─────────────────────────────────────── */
.alpha-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 30px;
}
.alpha-nav a, .alpha-nav span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 7px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink);
  background: var(--paper);
  transition: border-color 0.14s, background 0.14s;
}
.alpha-nav a:hover { border-color: var(--ink); background: var(--wash-2); }
.alpha-nav span { color: var(--steel-3); background: var(--wash-2); }

.alpha-block { margin-bottom: 36px; scroll-margin-top: 96px; }
.alpha-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--ink);
}
.alpha-heading h2 { font-size: 22px; }
.alpha-heading .count { font-family: var(--font-mono); font-size: 11.5px; color: var(--steel-2); }

/* ─── Stats ─────────────────────────────────────────── */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
}
.stat-cell {
  padding: 24px;
  border-right: 1px solid var(--line);
}
.stat-cell:last-child { border-right: none; }
.stat-num {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-num.is-signal { color: var(--signal-dim); }
.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--steel-2);
}

/* ─── Steps ─────────────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.step { border-top: 2px solid var(--ink); padding-top: 16px; }
.step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--signal-dim);
  margin-bottom: 9px;
}
.step h3 { font-size: 16px; margin-bottom: 7px; color: var(--ink); }
.step p  { font-size: 13.5px; color: var(--steel); line-height: 1.55; }

/* ─── Callout / notice ──────────────────────────────── */
.callout {
  border-left: 3px solid var(--signal);
  background: var(--signal-tint);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 22px;
}
.callout h4 { font-size: 15px; color: var(--ink); margin-bottom: 6px; }
.callout p  { font-size: 14px; color: var(--steel); line-height: 1.6; }

.callout--blue { border-left-color: var(--blue); background: var(--blue-tint); }
.callout--quiet { border-left-color: var(--line-2); background: var(--wash-2); }

/* Emergency band */
.emergency-band {
  background: var(--ink);
  color: var(--paper);
  padding: 26px 0;
}
.emergency-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}
.emergency-inner .tag { margin-bottom: 0; }
.emergency-inner p { flex: 1; min-width: 240px; color: #C6D0D6; font-size: 14.5px; max-width: none; }
.emergency-inner a.phone {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--signal);
  white-space: nowrap;
}
.emergency-inner a.phone:hover { color: var(--paper); }

/* ─── CTA band ──────────────────────────────────────── */
.cta-band {
  background: var(--wash);
  border-top: 1px solid var(--line);
  padding: 56px 0;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  flex-wrap: wrap;
}
.cta-inner h2 { max-width: 22ch; margin-bottom: 6px; }
.cta-inner p  { color: var(--steel); font-size: 15px; max-width: 46ch; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; flex-shrink: 0; }

/* ─── Forms ─────────────────────────────────────────── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-2);
  margin-bottom: 6px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14.5px;
  padding: 11px 13px;
  transition: border-color 0.14s, box-shadow 0.14s;
}
.field input::placeholder, .field textarea::placeholder { color: var(--steel-3); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-tint);
}
.field textarea { resize: vertical; min-height: 128px; }
.field .hint { font-size: 12.5px; color: var(--steel-2); margin-top: 5px; }

.field-consent {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 13px;
  color: var(--steel);
  line-height: 1.5;
  margin-bottom: 18px;
}
.field-consent input { width: auto; margin-top: 3px; flex-shrink: 0; accent-color: var(--blue); }

.form-box {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
}

.notice {
  border-radius: var(--radius);
  padding: 14px 17px;
  margin-bottom: 22px;
  font-size: 14px;
  font-weight: 500;
}
.notice--ok  { background: #EAF6EF; border: 1px solid #B7DFC8; color: var(--green); }
.notice--err { background: #FCECEA; border: 1px solid #F0C5BF; color: var(--red); }

/* ─── Footer ────────────────────────────────────────── */
#site-footer {
  background: var(--ink);
  color: #A7B4BC;
  padding: 56px 0 26px;
  font-size: 14px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 34px;
  padding-bottom: 40px;
  border-bottom: 1px solid #21313B;
}

.footer-brand .brand { color: var(--paper); font-size: 19px; margin-bottom: 14px; display: inline-block; }
.footer-brand .brand span { color: var(--signal); }
.footer-brand p { font-size: 13.5px; line-height: 1.65; color: #8A99A2; margin-bottom: 18px; max-width: 34ch; }

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #66777F;
  margin-bottom: 14px;
}
.footer-col ul li { margin-bottom: 9px; }
.footer-col ul li a { font-size: 13.5px; color: #A7B4BC; transition: color 0.12s; }
.footer-col ul li a:hover { color: var(--paper); }

.footer-mid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
  padding: 32px 0;
  border-bottom: 1px solid #21313B;
}
.footer-loc h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #66777F;
  margin-bottom: 10px;
  font-weight: 500;
}
.footer-loc p, .footer-loc a { font-size: 13.5px; line-height: 1.65; color: #A7B4BC; display: block; }
.footer-loc a:hover { color: var(--paper); }
.footer-loc .emergency { color: var(--signal); font-family: var(--font-mono); font-size: 14px; margin-top: 8px; display: block; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding-top: 22px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: #66777F;
}
.footer-bottom a { color: #66777F; }
.footer-bottom a:hover { color: var(--paper); }
.footer-legal-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ─── Pagination ────────────────────────────────────── */
.pagination { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 32px; }
.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13.5px;
  color: var(--steel);
  background: var(--paper);
  transition: border-color 0.14s, color 0.14s;
}
.pagination .page-numbers:hover { border-color: var(--ink); color: var(--ink); }
.pagination .page-numbers.current {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
  font-weight: 600;
}

/* ─── Utility spacing ───────────────────────────────── */
.mt-0  { margin-top: 0; }
.mt-sm { margin-top: 12px; }
.mt    { margin-top: 24px; }
.mt-lg { margin-top: 40px; }
.mb-sm { margin-bottom: 12px; }
.mb    { margin-bottom: 24px; }
.mb-lg { margin-bottom: 40px; }

hr.rule { border: none; border-top: 1px solid var(--line); margin: 40px 0; }

/* ─── Responsive ────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .split, .split--reverse { grid-template-columns: 1fr; gap: 40px; }
  .sidebar { position: static; }
  .quick-grid { grid-template-columns: 1fr 1fr; }
  .quick-card:nth-child(2) { border-right: none; }
  .quick-card:nth-child(1), .quick-card:nth-child(2) { border-bottom: 1px solid var(--line); }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .steps  { grid-template-columns: 1fr 1fr; }
  .stat-strip { grid-template-columns: 1fr 1fr; }
  .stat-cell:nth-child(2) { border-right: none; }
  .stat-cell:nth-child(1), .stat-cell:nth-child(2) { border-bottom: 1px solid var(--line); }
  .footer-mid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .main-nav { display: none; }
  .nav-toggle { display: block; }
  .header-inner { height: 60px; gap: 16px; }
  .header-cta { display: none; }

  /* Anchored to the sticky header, not the viewport, so it tracks on scroll. */
  body.nav-open .main-nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
    background: var(--paper);
    border-top: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(14,26,34,0.16);
    padding: 8px 20px 28px;
  }
  body.nav-open .main-nav > li > a {
    display: block;
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
  }
  body.nav-open .main-nav .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    border: none;
    box-shadow: none;
    padding: 4px 0 10px 12px;
    min-width: 0;
  }
  body.nav-open .main-nav .sub-menu a { padding: 7px 10px; font-size: 14px; }
}

@media (max-width: 720px) {
  :root { --section-pad: 52px; }
  .container { padding: 0 18px; }

  .hero { padding: 44px 0 40px; }
  .search-major { flex-direction: column; }
  .search-major input { padding: 15px 16px; }
  .search-major button { padding: 14px 20px; width: 100%; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: 1fr; }
  .quick-card { border-right: none; border-bottom: 1px solid var(--line); }
  .quick-card:last-child { border-bottom: none; }
  .stat-strip { grid-template-columns: 1fr; }
  .stat-cell { border-right: none; border-bottom: 1px solid var(--line); }
  .stat-cell:last-child { border-bottom: none; }
  .footer-top, .footer-mid { grid-template-columns: 1fr; gap: 26px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .spec-row { grid-template-columns: 1fr; gap: 3px; }

  /* Product table collapses to stacked records — a 4-column table at 375px
     is either unreadable or a horizontal-scroll trap. */
  .ptable, .ptable tbody, .ptable tr, .ptable td { display: block; width: 100%; }
  .ptable thead { display: none; }
  .ptable tbody tr {
    border-bottom: 1px solid var(--line);
    padding: 16px 18px;
  }
  .ptable tbody tr:last-child { border-bottom: none; }
  .ptable tbody td {
    border: none;
    padding: 3px 0;
  }
  .ptable tbody td[data-label]::before {
    content: attr(data-label);
    display: block;
    font-family: var(--font-mono);
    font-size: 9.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--steel-3);
    margin-bottom: 2px;
  }
  .ptable td.col-docs { text-align: left; padding-top: 10px; }
  .ptable .col-product, .ptable .col-cas, .ptable .col-packs, .ptable .col-docs { width: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ─── Print ─────────────────────────────────────────── */
@media print {
  .utility-bar, #site-header, #site-footer, .cta-band, .emergency-band, .nav-toggle, .chip-row { display: none; }
  body { color: #000; background: #fff; }
  .container { max-width: 100%; }
  .table-card, .card { border-color: #999; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 10px; color: #555; }
}