/* Buyer handbook: quiet editorial layout, real links and printable working aids. */
.resource-hero { background: #edf3f7; border-bottom: 1px solid var(--rule); overflow: hidden; }
.resource-hero-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 32px; padding-block: clamp(38px, 6vw, 80px); }
.resource-hero-copy h1 { margin: 16px 0 22px; font-size: clamp(43px, 4.5vw, 65px); font-weight: 600; }
.resource-hero-copy .lead { font-size: clamp(17px, 1.7vw, 21px); max-width: 42ch; }
.resource-start { display: inline-flex; align-items: center; gap: 20px; margin-top: 27px; min-height: 44px; }
.resource-hero-figure { align-self: center; }
.resource-hero-figure img { width: 100%; height: auto; }
.resource-hero-figure figcaption { text-align: right; font: 12px/1.5 var(--mono); color: var(--muted); margin-top: 2px; }
.resource-library { padding-block: clamp(40px, 5vw, 68px); }
.resource-library-heading { display: flex; justify-content: space-between; gap: 24px; align-items: end; }
.resource-library-heading h2 { margin-top: 12px; font-size: clamp(30px, 3.4vw, 44px); }
.resource-library-heading > p { font-size: 15px; color: var(--muted); }
.resource-filters { display: flex; gap: 5px 22px; flex-wrap: wrap; margin-top: 35px; border-bottom: 1px solid var(--rule); }
.resource-filters button { border: 0; border-bottom: 3px solid transparent; padding: 13px 0; background: transparent; color: var(--muted); cursor: pointer; min-height: 48px; font-size: 14px; font-weight: 650; }
.resource-filters button:hover { color: var(--accent); }
.resource-filters button[aria-pressed="true"] { color: var(--accent-strong); border-color: var(--accent); }
.resource-count { margin: 14px 0; font: 12px/1.4 var(--mono); color: var(--muted); }
.resource-list { border-top: 1px solid var(--rule); }
.resource-row { display: grid; grid-template-columns: 48px 1fr 40px; gap: 18px; align-items: center; padding: 27px 12px 27px 0; border-bottom: 1px solid var(--rule); text-decoration: none; transition: background-color 180ms; }
.resource-row:hover { background: #f2f6fa; }
.resource-number { align-self: start; margin-top: 5px; font: 12px/1.5 var(--mono); color: var(--accent); }
.resource-row-main { display: grid; gap: 9px; }
.resource-meta { color: var(--muted); font: 11px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .04em; }
.resource-row strong { font-size: clamp(21px, 2.4vw, 29px); line-height: 1.2; letter-spacing: -.025em; font-weight: 650; }
.resource-description { color: var(--muted); font-size: 15px; line-height: 1.6; max-width: 80ch; }
.resource-row .arrow { color: var(--accent); font-size: 24px; justify-self: end; }
.resource-row:hover .arrow, .resource-start:hover .arrow { transform: translateX(5px); }
.resource-toolkit { background: var(--navy); color: #fff; }
.resource-toolkit-grid { padding-block: 47px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 75px; align-items: center; }
.resource-toolkit .eyebrow { color: #b6d1eb; }
.resource-toolkit h2 { font-size: clamp(30px, 3vw, 42px); margin: 12px 0 17px; }
.resource-toolkit p { color: #ccd9e4; max-width: 63ch; }
.resource-toolkit .micro { margin-block: 10px 20px; }
.resource-toolkit .text-link { color: #e0efff; }
.resource-toolkit .primary-button { border-color: #72a1d5; }
.resource-note { padding-block: 50px; display: grid; grid-template-columns: .9fr 1.5fr; column-gap: 70px; row-gap: 18px; }
.resource-note h2 { font-size: 29px; }
.resource-note p { color: var(--muted); }
.resource-note .text-link { grid-column: 2; }
.guide-hero { background: #edf3f7; padding-block: 24px 44px; }
.resource-breadcrumb { display: flex; gap: 13px; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 29px; }
.resource-breadcrumb a { text-underline-offset: 4px; }
.guide-hero h1 { font-size: clamp(36px, 4.5vw, 63px); max-width: 24ch; margin: 14px 0 19px; font-weight: 600; text-wrap: pretty; }
.guide-hero .lead { max-width: 68ch; font-size: clamp(17px, 1.7vw, 21px); }
.guide-byline { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 22px; margin-top: 25px; color: var(--muted); font-size: 12px; }
.guide-print { border: 0; background: transparent; color: var(--accent-strong); padding: 8px 0; min-height: 40px; text-decoration: underline; text-underline-offset: 4px; cursor: pointer; font-weight: 650; font-size: 13px; }
.guide-layout { display: grid; grid-template-columns: 230px minmax(0, 790px); gap: clamp(35px, 6vw, 85px); justify-content: space-between; padding-block: 45px 65px; }
.guide-sidebar { position: sticky; top: 28px; align-self: start; }
.guide-contents { border-top: 2px solid var(--ink); }
.guide-contents summary { font-size: 13px; font-weight: 750; padding: 15px 0; cursor: pointer; }
.guide-contents nav { display: grid; padding-bottom: 14px; border-bottom: 1px solid var(--rule); }
.guide-contents a { color: var(--muted); text-decoration: none; line-height: 1.4; font-size: 13px; padding: 9px 12px; margin-left: -12px; border-left: 2px solid transparent; }
.guide-contents a:hover { color: var(--accent); background: #f2f6fa; }
.guide-contents a[aria-current="location"] { border-color: var(--accent); color: var(--accent-strong); background: #edf3f7; }
.guide-sidebar-cta { display: inline-flex; gap: 15px; align-items: center; margin-top: 19px; font-size: 14px; min-height: 44px; }
.guide-content { min-width: 0; font-size: 17px; line-height: 1.78; }
.guide-content p + p { margin-top: 16px; }
.guide-content h2 { font-size: clamp(26px, 2.7vw, 35px); line-height: 1.2; text-wrap: pretty; font-weight: 650; }
.guide-content ul { padding-left: 22px; margin-top: 18px; }
.guide-content li { padding-left: 5px; }
.guide-content li + li { margin-top: 11px; }
.guide-content a { color: var(--accent-strong); text-underline-offset: 3px; }
.guide-answer { padding-bottom: 33px; border-bottom: 1px solid var(--rule); }
.guide-answer h2 { margin-top: 12px; font-size: clamp(23px, 2.2vw, 29px); line-height: 1.4; }
.guide-answer ul { display: grid; gap: 11px; padding: 0; list-style: none; margin-top: 22px; }
.guide-answer li { padding-left: 21px; position: relative; font-size: 15px; margin: 0; }
.guide-answer li::before { content: ''; position: absolute; width: 5px; height: 5px; background: var(--accent); top: .76em; left: 0; }
.guide-section { padding-top: 40px; }
.guide-section h2 { margin-bottom: 18px; }
.guide-content .section-sources { font-size: 12px; line-height: 1.7; color: var(--muted); margin-top: 22px; }
.section-sources a { color: var(--muted); }
.guide-callout { padding: 18px 22px; border-left: 3px solid var(--accent); background: #f0f5f9; margin-top: 24px; font-size: 15px; }
.guide-callout strong { font-size: 15px; }
.guide-callout p { margin-top: 6px; }
.guide-figure { margin-block: 26px; background: #f0f5f9; border-block: 1px solid var(--rule); }
.guide-figure > img { width: 100%; height: auto; max-height: 420px; object-fit: contain; }
.guide-figure figcaption { padding: 17px 20px; font-size: 12px; color: var(--muted); line-height: 1.65; border-top: 1px solid var(--rule); }
.guide-figure figcaption strong { color: var(--ink); }
.tolerance-diagram { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); padding: 25px 20px; gap: 20px; }
.tolerance-diagram > div + div { border-left: 1px solid var(--rule); padding-left: 20px; }
.tolerance-diagram span { color: var(--accent-strong); font: 10px/1.4 var(--mono); text-transform: uppercase; }
.tolerance-diagram svg { display: block; width: 100%; margin-block: 15px; }
.tolerance-diagram strong { font-size: 14px; display: block; }
.tolerance-diagram p { font-size: 12px; line-height: 1.6; color: var(--muted); margin-top: 6px; }
.finish-diagram { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; padding: 23px; }
.finish-diagram ol { list-style: none; padding: 0; margin-top: 14px; }
.finish-diagram li { background: #fff; border: 1px solid var(--rule); padding: 10px; font-size: 13px; position: relative; text-align: center; }
.finish-diagram li + li { margin-top: 19px; }
.finish-diagram li + li::before { content: '↓'; position: absolute; color: var(--accent); top: -23px; left: 50%; transform: translateX(-50%); }
.release-diagram { display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; padding: 24px; gap: 20px; }
.release-diagram li, .release-diagram li + li { margin: 0; padding: 0; }
.release-diagram span { display: block; font: 12px/1.4 var(--mono); color: var(--accent); }
.release-diagram strong { display: block; font-size: 20px; margin-top: 7px; }
.release-diagram small { display: block; font-size: 12px; line-height: 1.5; color: var(--muted); margin-top: 5px; }
.guide-table-wrap { margin-block: 25px; overflow-x: auto; border: 1px solid var(--rule); }
.guide-table-wrap table { border-collapse: collapse; min-width: 590px; width: 100%; font-size: 13px; line-height: 1.65; }
.guide-table-wrap caption { text-align: left; padding: 13px 15px; font-size: 12px; background: #f3f7fa; font-weight: 650; color: var(--muted); }
.guide-table-wrap td, .guide-table-wrap th { padding: 12px 14px; border-top: 1px solid var(--rule); vertical-align: top; text-align: left; }
.guide-table-wrap thead th { color: var(--ink); background: #e8f0f6; }
.guide-table-wrap tbody th { width: 24%; font-weight: 650; }
.guide-table-wrap tbody tr:nth-child(even) { background: #f8fafc; }
.guide-checklist { margin-top: 42px; padding: 26px; background: #edf3f7; border-top: 3px solid var(--accent); }
.guide-checklist-heading { display: flex; align-items: start; gap: 20px; justify-content: space-between; }
.guide-checklist-heading h2 { margin-top: 10px; font-size: 28px; }
.guide-checklist-heading .button { flex-shrink: 0; background: #fff; font-size: 12px; }
.guide-checklist ul { list-style: none; padding: 0; }
.guide-checklist li { padding: 11px 0 11px 26px; border-bottom: 1px solid #d5dfe7; font-size: 14px; line-height: 1.7; position: relative; }
.guide-checklist li + li { margin-top: 0; }
.guide-checklist li::before { content: ''; position: absolute; width: 12px; height: 12px; border: 1px solid #68859d; top: 18px; left: 0; }
.guide-copy-status { min-height: 20px; font-size: 12px; color: #236148; margin-top: 9px; }
.guide-profile-link { padding-top: 22px; font-size: 14px; }
.guide-sources { margin-top: 43px; border-top: 1px solid var(--rule); padding-top: 26px; }
.guide-sources h2 { font-size: 23px; }
.guide-sources > p { color: var(--muted); font-size: 13px; margin-top: 12px; }
.guide-sources ol { padding-left: 20px; margin-top: 22px; font-size: 13px; }
.guide-sources li p { color: var(--muted); font-size: 12px; line-height: 1.65; margin-top: 5px; }
.guide-next { padding-top: 32px; margin-top: 35px; border-top: 1px solid var(--rule); }
.guide-next h2 { margin-top: 10px; }
.guide-next p:not(.eyebrow) { font-size: 16px; color: var(--muted); margin-top: 13px; }
.guide-next .button { color: #fff; margin-top: 22px; }
.guide-related { border-top: 1px solid var(--rule); padding-block: 40px 60px; }
.guide-related h2 { font-size: 34px; margin: 10px 0 25px; }
.guide-related .resource-row strong { font-size: 24px; }
@media (prefers-reduced-motion: no-preference) {
  .resource-hero-copy, .guide-hero h1 { animation: guide-arrive 450ms ease-out both; }
  .resource-hero-figure { animation: guide-arrive 650ms ease-out both; }
  @keyframes guide-arrive { from { opacity: .2; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
}
@media (max-width: 1000px) {
  .guide-layout { grid-template-columns: 195px minmax(0, 1fr); gap: 32px; }
  .resource-toolkit-grid { gap: 35px; }
  .resource-note { gap: 25px; }
}
@media (max-width: 760px) {
  .resource-hero-grid { grid-template-columns: 1fr; gap: 12px; padding-block: 34px 25px; }
  .resource-hero-copy h1 { font-size: 43px; margin-block: 14px 18px; }
  .resource-hero-copy .lead { max-width: 45ch; }
  .resource-start { margin-top: 17px; font-size: 14px; }
  .resource-hero-figure { max-width: 480px; width: 100%; margin-inline: auto; }
  .resource-hero-figure img { max-height: 230px; }
  .resource-hero-figure figcaption { font-size: 10px; text-align: center; }
  .resource-library { padding-block: 35px; }
  .resource-library-heading { display: block; }
  .resource-library-heading > p { margin-top: 16px; }
  .resource-library-heading > p br { display: none; }
  .resource-filters { gap: 0 18px; margin-top: 23px; }
  .resource-filters button { font-size: 12px; }
  .resource-row { grid-template-columns: 24px 1fr 18px; gap: 9px; padding-block: 23px; }
  .resource-row strong { font-size: 22px; }
  .resource-meta { font-size: 9px; }
  .resource-description { font-size: 14px; }
  .resource-toolkit-grid, .resource-note { grid-template-columns: 1fr; gap: 25px; }
  .resource-note .text-link { grid-column: 1; font-size: 14px; }
  .guide-hero { padding-block: 19px 29px; }
  .resource-breadcrumb { margin-bottom: 22px; }
  .guide-hero h1 { font-size: 38px; }
  .guide-byline { gap: 8px 17px; font-size: 11px; margin-top: 19px; }
  .guide-layout { grid-template-columns: 1fr; gap: 29px; padding-top: 25px; }
  .guide-sidebar { position: static; }
  .guide-contents nav { grid-template-columns: 1fr 1fr; gap: 3px 15px; }
  .guide-contents a { font-size: 12px; padding-block: 9px; }
  .guide-sidebar-cta { display: none; }
  .guide-content { font-size: 16px; line-height: 1.78; }
  .guide-answer h2 { font-size: 24px; }
  .guide-section { padding-top: 32px; }
  .guide-content h2 { font-size: 27px; }
  .guide-content .guide-answer h2 { font-size: 23px; }
  .guide-table-wrap table { min-width: 550px; }
  .guide-checklist { padding: 21px 17px; }
  .guide-checklist-heading { display: block; }
  .guide-checklist-heading .button { margin-top: 17px; }
  .guide-checklist-heading h2 { font-size: 25px; }
  .tolerance-diagram { grid-template-columns: 1fr; gap: 20px; }
  .tolerance-diagram > div { display: grid; grid-template-columns: 105px 1fr; gap: 4px 16px; }
  .tolerance-diagram > div + div { border-left: 0; border-top: 1px solid var(--rule); padding: 19px 0 0; }
  .tolerance-diagram svg { grid-column: 1; grid-row: 1 / 4; margin: 0; align-self: center; }
  .tolerance-diagram span, .tolerance-diagram strong, .tolerance-diagram p { grid-column: 2; }
  .tolerance-diagram p { margin: 0; }
  .finish-diagram { gap: 13px; padding: 17px 12px; }
  .finish-diagram .eyebrow { font-size: 9px; }
  .finish-diagram li { font-size: 11px; padding: 9px 5px; }
  .release-diagram { grid-template-columns: 1fr 1fr; gap: 25px; }
  .guide-related h2 { font-size: 30px; }
  .guide-related .resource-row strong { font-size: 21px; }
}
@media print {
  .guide-hero h1 { animation: none; }
  .header, .footer, .skip, .guide-sidebar, .guide-print, .guide-checklist button, .guide-copy-status, .guide-next, .guide-related, .resource-filters { display: none !important; }
  .resource-article, .guide-content { font-size: 11pt; line-height: 1.55; }
  .shell { width: 100%; max-width: none; }
  .guide-hero { padding: 0 0 18pt; background: none; border-bottom: 1pt solid #aaa; }
  .guide-hero h1 { font-size: 27pt; max-width: none; }
  .guide-hero .lead { font-size: 12pt; }
  .guide-layout { display: block; padding: 20pt 0 0; }
  .guide-content h2 { font-size: 17pt; break-after: avoid; }
  .guide-section { padding-top: 19pt; }
  .guide-figure, .guide-callout, .guide-checklist { break-inside: avoid; }
  .guide-figure > img { max-height: 220pt; }
  .guide-table-wrap { overflow: visible; }
  .guide-table-wrap table { min-width: 0; font-size: 9pt; }
  .guide-content a { color: inherit; }
  .resource-breadcrumb { display: none; }
  .guide-sources a::after { content: ' (' attr(href) ')'; font-size: 8pt; overflow-wrap: anywhere; }
  .guide-sources { break-before: auto; }
}