/* 玉磨 v2: native CSS, approved prototype layout; no external runtime dependency.
   DESIGN_VARIANCE: 5; MOTION_INTENSITY: 3; VISUAL_DENSITY: 5.
   12 columns / 24px gutters / 1280px container. Layers: header 20, contact bar 30,
   skip link 40; native dialog uses the top layer.
   Navy is the default: dark opening/footer and a light middle.
   integration.css supplies light-theme color tokens without layout changes. */
:root {
  color-scheme: light;
  --ym-navy: #0b0f19;
  --ym-gold: #c5a065;
  --ym-bg: #f8fafc;
  --ym-surface: #fcfdff;
  --ym-tint: #edf1f5;
  --ym-text: #0b0f19;
  --ym-muted: #475569;
  --ym-line: #c4ccd6;
  --ym-input-line: #6b798c;
  --ym-primary-bg: #0b0f19;
  --ym-primary-text: #f8fafc;
  --ym-focus: #0b0f19;
  --ym-grid: repeat(12, minmax(0, 1fr));
  --ym-gap: 24px;
  --ym-section-space: 72px;
  --ym-radius: 2px;
  --ym-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 96px; }
body { margin: 0; background: var(--ym-bg); color: var(--ym-text); font: 16px/1.75 var(--ym-font); font-variant-numeric: tabular-nums; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; text-underline-offset: 5px; }
a:hover { text-decoration: underline; }
button, input, textarea, select { font: inherit; color: inherit; }
button, summary, input[type="checkbox"] { cursor: pointer; }
button { border-radius: var(--ym-radius); }
button:disabled { cursor: wait; }
input, textarea, select { width: 100%; min-height: 50px; border: 1px solid var(--ym-input-line); background: var(--ym-surface); border-radius: var(--ym-radius); padding: 10px 12px; }
input::placeholder, textarea::placeholder { color: var(--ym-muted); opacity: 1; }
textarea { resize: vertical; }
input[type="checkbox"] { accent-color: var(--ym-text); width: 20px; height: 20px; min-height: 20px; flex: 0 0 20px; padding: 0; margin: 0; }
input[readonly] { background: var(--ym-tint); }
input[aria-invalid="true"], textarea[aria-invalid="true"] { border: 2px solid var(--ym-text); }
:focus-visible { outline: 3px solid var(--ym-focus); outline-offset: 4px; }
::selection { background: var(--ym-gold); color: var(--ym-navy); }
img { display: block; max-width: 100%; height: auto; }
figure, h1, h2, h3, p, dl, dd { margin: 0; }
h1, h2, h3 { font-weight: 650; line-height: 1.3; }
h1 { font-size: 46px; letter-spacing: -.025em; }
h2 { font-size: 34px; letter-spacing: -.02em; }
h3 { font-size: 26px; }
p, dd { overflow-wrap: anywhere; }
[hidden] { display: none !important; }
.ym-shell { width: calc(100% - 80px); max-width: 1280px; margin-inline: auto; }
.ym-section { padding-block: var(--ym-section-space); }
.ym-section + .ym-section { padding-top: 0; }
.ym-section-heading { max-width: 780px; margin-bottom: 32px; }
.ym-section-heading p { color: var(--ym-muted); margin-top: 12px; font-size: 17px; }
.ym-section-link { margin-top: 28px; }
.ym-muted { color: var(--ym-muted); }
.ym-tint { background: var(--ym-bg); }
.ym-icon { width: 20px; height: 20px; flex: 0 0 20px; }
.ym-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.ym-button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 50px; padding: 12px 22px; border: 1px solid transparent; border-radius: var(--ym-radius); font-size: 16px; font-weight: 650; line-height: 1.4; white-space: nowrap; text-decoration: none; }
.ym-button:hover { text-decoration: none; }
.ym-button-primary { background: var(--ym-primary-bg); color: var(--ym-primary-text); }
.ym-button-primary:hover { box-shadow: inset 0 0 0 2px var(--ym-primary-text); }
.ym-button-secondary { border-color: var(--ym-input-line); color: var(--ym-text); background: transparent; }
.ym-button-secondary:hover { border-color: var(--ym-text); background: var(--ym-tint); }
.ym-button:active, .ym-icon-button:active, .ym-gallery-thumb:active { transform: translateY(1px); }
.ym-text-link { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0; border: 0; background: transparent; font-size: 16px; font-weight: 600; }
.ym-icon-button { display: grid; place-items: center; padding: 8px; width: 44px; height: 44px; border: 1px solid var(--ym-input-line); background: transparent; }
.ym-skip { position: fixed; inset: 8px auto auto 16px; transform: translateY(-160%); background: var(--ym-primary-bg); color: var(--ym-primary-text); padding: 10px 20px; z-index: 40; }
.ym-skip:focus { transform: none; }
.ym-visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; border: 0; clip-path: inset(50%); overflow: hidden; white-space: nowrap; }
/* Shared full-width grids. Subcomponents use a subdivision of the same 24px gutter. */
.ym-hero-grid, .ym-materials, .ym-quality-layout, .ym-production-gallery,
.ym-comparison-row, .ym-detail-grid, .ym-overview, .ym-tables-layout,
.ym-packaging, .ym-inquiry-intro-grid, .ym-inquiry-layout, .ym-footer-grid {
  display: grid; grid-template-columns: var(--ym-grid); gap: var(--ym-gap);
}
:where(.ym-hero-grid, .ym-materials, .ym-material, .ym-quality-layout, .ym-production-gallery,
.ym-comparison-row, .ym-detail-grid, .ym-metrics, .ym-overview, .ym-tables-layout,
.ym-packaging, .ym-inquiry-intro-grid, .ym-inquiry-layout, .ym-footer-grid, .ym-form-grid) > * { min-width: 0; }
/* Two deliberate brand anchors; no system-mode inversion of the middle sections. */
.ym-header, .ym-home-hero, .ym-page-intro, .ym-detail-top, .ym-inquiry-intro, .ym-footer {
  --ym-bg: #0b0f19; --ym-surface: #141c29; --ym-tint: #192332;
  --ym-text: #edf2f8; --ym-muted: #b9c4d4; --ym-line: #47556a;
  --ym-input-line: #8f9daf; --ym-primary-bg: #c5a065;
  --ym-primary-text: #0b0f19; --ym-focus: #c5a065;
  background: var(--ym-bg); color: var(--ym-text);
}
/* Header: all seven navigation items on one 76px line; below 1280 use a menu. */
.ym-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--ym-line); }
.ym-header-inner { height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.ym-brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.ym-brand:hover { text-decoration: none; }
.ym-brand img { width: 40px; height: 40px; }
.ym-brand-text { display: grid; line-height: 1.4; }
.ym-brand-text strong { font-size: 22px; letter-spacing: .03em; }
.ym-brand-text > span { font-size: 12px; color: var(--ym-muted); letter-spacing: .04em; }
.ym-navigation { display: flex; align-items: center; gap: 14px; white-space: nowrap; }
.ym-nav-link { font-size: 15px; line-height: 76px; display: block; position: relative; }
.ym-nav-link[aria-current="page"] { font-weight: 700; }
.ym-nav-link[aria-current="page"]::after { content: ""; position: absolute; bottom: 12px; left: 0; right: 0; height: 2px; background: var(--ym-gold); }
.ym-nav-products { display: flex; align-items: center; gap: 2px; position: relative; }
.ym-nav-disclosure { padding: 0; display: grid; place-items: center; width: 24px; height: 44px; border: 0; background: transparent; }
.ym-nav-disclosure .ym-icon { width: 14px; height: 14px; }
.ym-dropdown { position: absolute; top: 65px; left: -12px; min-width: 184px; background: var(--ym-surface); border: 1px solid var(--ym-input-line); padding: 8px; }
.ym-dropdown a { display: block; padding: 9px 12px; font-size: 16px; }
.ym-dropdown a:hover { background: var(--ym-tint); text-decoration: none; }
.ym-header-actions { display: flex; align-items: center; gap: 14px; flex: 0 0 auto; }
.ym-header-actions > .ym-button { min-height: 44px; padding: 10px 16px; font-size: 15px; }
.ym-header-phone { font-size: 17px; font-weight: 650; white-space: nowrap; }
.ym-quote-link { display: flex; align-items: center; gap: 6px; min-height: 44px; font-size: 15px; white-space: nowrap; }
.ym-quote-count { display: grid; place-items: center; height: 24px; min-width: 24px; padding-inline: 4px; border: 1px solid var(--ym-input-line); font-size: 14px; }
.ym-menu-toggle { display: none; align-items: center; justify-content: center; width: 44px; height: 44px; padding: 8px; background: transparent; border: 1px solid var(--ym-input-line); }
.ym-menu-toggle .ym-icon:last-child { display: none; }
.ym-menu-toggle[aria-expanded="true"] .ym-icon:first-child { display: none; }
.ym-menu-toggle[aria-expanded="true"] .ym-icon:last-child { display: block; }
.ym-mobile-actions { display: none; }
/* Main hero: equal six-column masses, four aligned photographs, captions below. */
.ym-home-hero { padding-block: 48px; }
.ym-hero-copy, .ym-specimens { grid-column: span 6; }
.ym-hero-copy { display: flex; flex-direction: column; justify-content: space-between; gap: 28px; }
.ym-hero-copy h1 { font-size: clamp(42px, 4.1vw, 58px); line-height: 1.25; }
.ym-hero-copy h1 span { display: block; }
.ym-hero-copy p { font-size: 18px; line-height: 1.8; max-width: 31em; color: var(--ym-muted); }
.ym-specimens { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--ym-gap); align-items: start; }
.ym-specimen a { display: block; }
.ym-specimen img { width: 100%; height: 290px; object-fit: cover; border: 1px solid var(--ym-input-line); }
.ym-specimen figcaption { display: grid; gap: 2px; padding-top: 12px; }
.ym-specimen strong { font-size: 17px; color: var(--ym-text); }
.ym-specimen span { font-size: 15px; color: var(--ym-muted); white-space: nowrap; }
/* Material directory: two rows, equal six-column entries, light/dark diagonal balance.
   At tablet each entry spans the container; on mobile its photo and copy stack. */
.ym-materials { row-gap: 40px; }
.ym-material { grid-column: span 6; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--ym-gap); padding-top: 24px; border-top: 1px solid var(--ym-line); }
.ym-material-photo { grid-column: span 2; display: block; }
.ym-material-photo img { width: 100%; height: 292px; object-fit: cover; border: 1px solid var(--ym-input-line); }
.ym-material-content { grid-column: span 4; display: flex; flex-direction: column; gap: 16px; }
.ym-material-specs { display: grid; gap: 12px; }
.ym-material-specs div { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 12px; align-items: baseline; }
.ym-material-specs dt { font-size: 15px; color: var(--ym-muted); }
.ym-material-specs dd { font-size: 16px; font-weight: 550; }
.ym-material-specs div:first-child dd { font-size: 22px; line-height: 1.4; }
.ym-material-use { font-size: 16px; color: var(--ym-muted); }
.ym-material-content > .ym-text-link { margin-top: auto; }
/* Application matrix: one light surface, sparse separators. Mobile scroll is local. */
.ym-table-hint { display: none; color: var(--ym-muted); font-size: 15px; margin-bottom: 14px; }
.ym-table-scroll { max-width: 100%; overflow: auto; overscroll-behavior-inline: contain; }
table { border-collapse: collapse; width: 100%; text-align: left; }
.ym-selection-table { min-width: 1000px; table-layout: fixed; }
.ym-selection-table th, .ym-selection-table td { padding: 20px 18px; vertical-align: top; }
.ym-selection-table thead { background: var(--ym-tint); border-bottom: 2px solid var(--ym-gold); }
.ym-selection-table th:first-child { width: 160px; }
.ym-selection-table tbody th { font-weight: 600; }
.ym-selection-table td { font-size: 16px; }
.ym-selection-table tbody tr:nth-child(even) { background: var(--ym-tint); }
.ym-table-note { margin-top: 20px; font-size: 15px; color: var(--ym-muted); }
/* Quality: seven columns of actual equipment, five columns of substantial text. */
.ym-quality-layout figure { grid-column: span 7; }
.ym-quality-layout figure img { width: 100%; aspect-ratio: 1.9; object-fit: cover; object-position: center 62%; }
figcaption { font-size: 15px; color: var(--ym-muted); padding-top: 10px; }
.ym-checks { grid-column: span 5; display: grid; grid-template-rows: repeat(3, 1fr); }
.ym-checks > div { padding: 22px 0; border-top: 1px solid var(--ym-line); }
.ym-checks > div:first-child { border-top: 2px solid var(--ym-gold); }
.ym-checks dt { font-size: 24px; font-weight: 600; line-height: 1.4; }
.ym-checks dd { color: var(--ym-muted); font-size: 17px; margin-top: 8px; }
/* Production: 6 / 3 / 3 photo strip, a distinct layout from the material directory. */
.ym-production-gallery figure { grid-column: span 3; }
.ym-production-gallery figure:first-child { grid-column: span 6; }
.ym-production-gallery img { width: 100%; height: 320px; object-fit: cover; object-position: center 60%; }
.ym-production-gallery figure:first-child img { object-position: 56% 60%; }
.ym-production-note { color: var(--ym-muted); margin-top: 24px; font-size: 16px; }
.ym-articles { border-top: 1px solid var(--ym-line); }
.ym-article-row { display: grid; grid-template-columns: var(--ym-grid); gap: var(--ym-gap); padding: 28px 0; border-bottom: 1px solid var(--ym-line); }
.ym-article-row time { grid-column: span 2; font-size: 16px; color: var(--ym-muted); padding-top: 3px; }
.ym-article-preview { grid-column: span 10; min-width: 0; }
.ym-article-preview summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; list-style: none; }
summary::-webkit-details-marker { display: none; }
.ym-article-preview h3 { font-size: 23px; }
.ym-article-preview p { color: var(--ym-muted); margin-top: 14px; max-width: 52em; }
.ym-article-preview[open] summary > .ym-icon { transform: rotate(90deg); }
.ym-contact-band > .ym-shell { border-top: 2px solid var(--ym-gold); padding-top: 36px; }
.ym-contact-band h2 { font-size: 26px; }
.ym-contact-band-main { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; margin-top: 20px; }
.ym-large-phone { font-size: clamp(36px, 4.8vw, 64px); font-weight: 650; letter-spacing: -.025em; line-height: 1.3; white-space: nowrap; }
.ym-contact-band-details { display: flex; flex-wrap: wrap; gap: 16px 32px; color: var(--ym-muted); margin-top: 20px; }
/* Product index: one comparison list, 3 / 3 / 6 columns. */
.ym-page-intro { padding-block: 40px; }
.ym-page-intro p { color: var(--ym-muted); font-size: 17px; margin: 16px 0 24px; }
.ym-comparison-row { padding-block: 32px; border-bottom: 1px solid var(--ym-line); align-items: start; }
.ym-comparison-row:first-child { padding-top: 0; }
.ym-comparison-photo, .ym-comparison-title { grid-column: span 3; }
.ym-comparison-photo img { width: 100%; height: 238px; object-fit: cover; border: 1px solid var(--ym-input-line); }
.ym-comparison-title h2 { font-size: 30px; }
.ym-comparison-title p { color: var(--ym-muted); margin: 14px 0; }
.ym-comparison-specs { grid-column: span 6; display: grid; grid-template-columns: 1fr 1fr; gap: 18px var(--ym-gap); }
.ym-comparison-specs dt { font-size: 15px; color: var(--ym-muted); margin-bottom: 4px; }
.ym-value { font-size: 25px; font-weight: 650; line-height: 1.4; }
.ym-spec-wide { grid-column: 1 / -1; }
/* Detail: the photograph, title and metrics share a top edge; actions align to thumbnails.
   On phones the text/actions precede metrics and gallery, preserving the first-fold CTA. */
.ym-breadcrumb { display: flex; gap: 12px; padding-block: 18px; font-size: 15px; color: var(--ym-muted); }
.ym-detail-hero { padding-bottom: 40px; }
.ym-gallery, .ym-detail-copy { grid-column: span 6; }
.ym-gallery-main img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; background: var(--ym-tint); border: 1px solid var(--ym-input-line); }
.ym-gallery-thumbs { display: flex; gap: 16px; margin-top: 16px; }
.ym-gallery-thumb { display: grid; gap: 6px; padding: 6px; width: 140px; background: transparent; border: 1px solid var(--ym-input-line); text-align: left; }
.ym-gallery-thumb img { width: 100%; height: 80px; object-fit: cover; }
.ym-gallery-thumb span { font-size: 15px; line-height: 1.5; white-space: nowrap; }
.ym-gallery-thumb[aria-pressed="true"] { border-color: var(--ym-gold); box-shadow: inset 0 -3px var(--ym-gold); }
.ym-detail-copy { display: flex; flex-direction: column; }
.ym-detail-heading p { color: var(--ym-muted); font-size: 17px; margin-top: 16px; max-width: 31em; }
.ym-detail-copy > .ym-actions { order: 2; margin-top: auto; padding-top: 24px; }
.ym-metrics { order: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 20px var(--ym-gap); margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--ym-line); }
.ym-metric dt { font-size: 15px; color: var(--ym-muted); margin-bottom: 6px; }
.ym-metric dd { font-size: 26px; font-weight: 600; line-height: 1.4; }
.ym-metric:first-child dd { color: var(--ym-gold); font-size: 32px; }
.ym-metric:nth-last-child(-n+2) dd { font-size: 18px; }
.ym-metric-wide { grid-column: 1 / -1; }
.ym-detail-nav { border-bottom: 1px solid var(--ym-line); }
.ym-detail-nav > div { display: flex; gap: 28px; overflow: auto; }
.ym-detail-nav a { white-space: nowrap; padding-block: 20px; }
.ym-detail-content { padding-bottom: var(--ym-section-space); }
.ym-detail-block { padding-top: 64px; scroll-margin-top: 96px; }
.ym-detail-block > h2, .ym-packaging h2 { margin-bottom: 24px; font-size: 30px; }
.ym-overview > div { grid-column: span 7; }
.ym-overview p { margin-bottom: 16px; }
.ym-source-bullets { grid-column: span 5; margin: 0; padding: 24px 24px 24px 44px; background: var(--ym-tint); }
.ym-source-bullets li + li { margin-top: 14px; }
.ym-tables-layout > section { grid-column: span 6; }
.ym-spec-table { min-width: 415px; font-size: 16px; }
.ym-spec-table thead { background: var(--ym-tint); border-bottom: 2px solid var(--ym-gold); }
.ym-spec-table th, .ym-spec-table td { padding: 12px 18px; vertical-align: top; }
.ym-spec-table thead th { font-size: 15px; }
.ym-spec-table th:first-child { width: 34%; }
.ym-spec-table tbody th { font-weight: 500; }
.ym-spec-table tbody + tbody { border-top: 1px solid var(--ym-line); }
#pd-sizes .ym-spec-table { width: 100%; table-layout: fixed; }
#pd-sizes .ym-spec-table tbody:nth-of-type(2) { background: var(--ym-tint); }
.ym-application-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--ym-gap); list-style: none; padding: 0; margin: 0; }
.ym-application-list li { padding: 16px 0; border-top: 1px solid var(--ym-line); }
.ym-packaging { align-items: start; }
.ym-packaging > div { grid-column: span 6; }
.ym-packaging figure { grid-column: span 6; }
.ym-packaging ul { margin: 0; padding-left: 20px; color: var(--ym-text); }
.ym-packaging li + li { margin-top: 16px; }
.ym-packaging img { width: 100%; height: 320px; object-fit: cover; object-position: center 60%; }
.ym-faq-item { border-bottom: 1px solid var(--ym-line); }
.ym-faq-item summary { padding: 22px 0; display: flex; justify-content: space-between; align-items: center; gap: 20px; list-style: none; font-size: 18px; font-weight: 600; }
.ym-faq-item p { color: var(--ym-muted); padding: 0 32px 22px 0; max-width: 58em; }
.ym-faq-item[open] summary .ym-icon { transform: rotate(180deg); }
/* Contact + quote: both columns have real contact content at the top, then a centered
   ten-column form. No long form with a near-empty sidebar. Mobile: a linear flow. */
.ym-inquiry-intro { padding-block: 40px; }
.ym-inquiry-intro-copy, .ym-inquiry-contacts { grid-column: span 6; }
.ym-inquiry-intro-copy p { max-width: 29em; margin: 16px 0 24px; color: var(--ym-muted); font-size: 17px; }
.ym-inquiry-contacts { display: flex; flex-direction: column; justify-content: space-between; gap: 20px; border-top: 2px solid var(--ym-gold); padding-top: 20px; }
.ym-contact-phone { font-size: clamp(36px, 3.6vw, 50px); font-weight: 650; letter-spacing: -.025em; line-height: 1.3; white-space: nowrap; color: var(--ym-gold); }
.ym-inquiry-contacts dl { display: grid; grid-template-columns: 2fr 1fr; gap: var(--ym-gap); }
.ym-inquiry-contacts dt { font-size: 15px; color: var(--ym-muted); margin-bottom: 5px; }
.ym-inquiry-contacts dd { font-size: 16px; }
.ym-inquiry-layout { padding-block: var(--ym-section-space); }
.ym-inquiry-layout > .ym-form-section { grid-column: 2 / 12; }
.ym-form-section { padding: 32px; background: var(--ym-surface); border: 1px solid var(--ym-line); border-top: 2px solid var(--ym-gold); scroll-margin-top: 96px; }
.ym-form-section h2 { font-size: 30px; }
.ym-form-intro { margin-top: 12px; color: var(--ym-muted); }

.ym-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.ym-field { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.ym-field > label, .ym-product-options legend { font-size: 16px; font-weight: 600; }
.ym-field-wide { grid-column: 1 / -1; }
.ym-field label .ym-muted { font-weight: 400; font-size: 15px; }
.ym-field-help { font-size: 15px; color: var(--ym-muted); line-height: 1.6; }
.ym-field-help:empty { display: none; }
.ym-field-error { font-size: 15px; color: var(--ym-text); font-weight: 600; line-height: 1.6; }
.ym-field-error::before { content: "请注意："; }
.ym-product-options { margin: 0; padding: 0; border: 0; min-width: 0; }
.ym-product-options > div { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 8px; }
.ym-check-label { display: flex; align-items: center; gap: 10px; min-height: 40px; font-size: 16px; }
.ym-consent { align-items: start; }
.ym-consent input { margin-top: 4px; }
.ym-consent a { text-decoration: underline; }
.ym-wechat-same { font-size: 15px; font-weight: 400 !important; }
.ym-form-submit { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; margin-top: 28px; }
.ym-form-submit > .ym-muted { font-size: 15px; }
.ym-form-summary { padding: 16px; margin-top: 24px; border: 2px solid var(--ym-text); background: var(--ym-tint); }
.ym-form-progress { display: flex; gap: 12px; align-items: center; margin-top: 20px; }
.ym-progress-block { width: 28px; height: 18px; background: var(--ym-tint); border-inline: 5px solid var(--ym-gold); }
.ym-form-success { margin-top: 24px; padding: 24px; background: var(--ym-tint); border-top: 3px solid var(--ym-gold); }
.ym-form-success h3 { font-size: 24px; display: flex; gap: 10px; align-items: center; }
.ym-form-success p { margin-top: 12px; }
.ym-form-success > .ym-button { margin-top: 18px; display: flex; width: fit-content; }





.ym-honeypot { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
/* Quote table: desktop alignment; phone entry groups expose every input label. */
.ym-inline-count { font-size: 20px; color: var(--ym-muted); margin-left: 8px; }
.ym-quote-table { table-layout: fixed; }
.ym-quote-table th, .ym-quote-table td { padding: 20px 12px; text-align: left; vertical-align: middle; }
.ym-quote-table thead { background: var(--ym-tint); border-bottom: 2px solid var(--ym-gold); }
.ym-quote-table thead th { font-size: 15px; }
.ym-quote-table th:first-child { width: 150px; padding-left: 20px; }
.ym-quote-table th:nth-child(2), .ym-quote-table th:nth-child(3) { width: 180px; }
.ym-quote-table th:last-child { width: 72px; }
.ym-quote-table tbody tr { border-bottom: 1px solid var(--ym-line); }

.ym-remove { background: transparent; border: 0; padding: 10px 0; min-height: 44px; text-decoration: underline; font-size: 15px; }
.ym-quote-empty { border: 1px solid var(--ym-line); padding: 40px; background: var(--ym-tint); }
.ym-quote-empty p { margin: 12px 0 24px; color: var(--ym-muted); }
.ym-quote-empty .ym-text-link { margin-left: 20px; }
.ym-quote-feedback { font-size: 15px; color: var(--ym-muted); }
.ym-quote-feedback:not(:empty) { margin-top: 16px; }
.ym-inquiry-after-list { padding-top: 0; }
/* Shared footer: 4 / 2 / 2 / 4, same edges as the rest of the site. */
.ym-footer { border-top: 1px solid var(--ym-line); padding-top: 48px; }
.ym-footer-grid { padding-bottom: 40px; }
.ym-footer-grid > div { grid-column: span 2; }
.ym-footer-grid > .ym-footer-company, .ym-footer-grid > .ym-footer-contacts { grid-column: span 4; }
.ym-footer-company > strong { font-size: 20px; font-weight: 650; }
.ym-footer-company p { color: var(--ym-muted); margin-top: 16px; max-width: 22em; }
.ym-footer h2 { font-size: 17px; margin-bottom: 16px; }
.ym-footer ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; font-size: 16px; color: var(--ym-muted); }
.ym-footer-contacts { display: flex; flex-direction: column; gap: 9px; font-size: 16px; }
.ym-footer-contacts h2 { margin-bottom: 7px; }
.ym-footer-contacts > a { overflow-wrap: anywhere; }
.ym-footer-phone { font-size: 28px; font-weight: 600; }
.ym-footer-contacts p { color: var(--ym-muted); }
.ym-footer-bottom { border-top: 1px solid var(--ym-line); display: flex; align-items: center; flex-wrap: wrap; gap: 20px; padding-block: 20px; font-size: 14px; color: var(--ym-muted); }
.ym-footer-bottom .ym-icp { margin-left: auto; }






@media (max-width: 1279px) {
  .ym-shell { width: calc(100% - 64px); }
  .ym-navigation { display: none; }
  .ym-menu-toggle { display: flex; }
  .ym-navigation.ym-open { display: flex; position: absolute; top: 76px; left: 0; right: 0; background: var(--ym-bg); padding: 20px 32px; border-bottom: 1px solid var(--ym-input-line); flex-direction: column; align-items: stretch; gap: 0; max-height: calc(100dvh - 140px); overflow-y: auto; }
  .ym-navigation .ym-nav-link { line-height: 48px; }
  .ym-nav-link[aria-current="page"]::after { bottom: 8px; right: auto; width: 28px; }
  .ym-nav-products { display: grid; grid-template-columns: 1fr 44px; }
  .ym-nav-disclosure { width: 44px; }
  .ym-dropdown { position: static; grid-column: 1 / -1; margin-block: 4px 12px; padding: 8px 12px; border: 0; border-left: 2px solid var(--ym-gold); background: var(--ym-tint); }
  .ym-hero-copy h1 { font-size: 44px; }
  .ym-specimens { gap: 12px; }
  .ym-specimen strong { font-size: 16px; }
  .ym-specimen span { font-size: 15px; white-space: normal; }
  .ym-comparison-photo { grid-column: span 3; }
  .ym-comparison-title { grid-column: span 4; }
  .ym-comparison-specs { grid-column: span 5; }
  .ym-metric:first-child dd { font-size: 28px; }
  .ym-metric dd { font-size: 22px; }
  .ym-contact-phone { font-size: 40px; }
}
@media (min-width: 768px) and (max-width: 1023px) {
  .ym-hero-copy, .ym-specimens { grid-column: 1 / -1; }
  .ym-hero-copy { gap: 24px; }
  .ym-hero-copy h1 { font-size: 42px; }
  .ym-specimens{ grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
  .ym-specimen img{ height: 160px; }
  
  .ym-material { grid-column: 1 / -1; }
  .ym-quality-layout figure, .ym-checks { grid-column: span 6; }
  .ym-quality-layout figure img { height: 100%; max-height: 370px; aspect-ratio: auto; }
  .ym-checks > div { padding-block: 16px; }
  .ym-production-gallery img { height: 260px; }
  .ym-comparison-photo { grid-column: span 4; grid-row: span 2; }
  .ym-comparison-title, .ym-comparison-specs { grid-column: 5 / -1; }
  .ym-gallery, .ym-detail-copy { grid-column: 1 / -1; }
  .ym-detail-copy { grid-row: 1; }
  .ym-detail-copy > .ym-actions { order: 0; }
  .ym-gallery-main img { max-height: 470px; object-fit: contain; }
  .ym-tables-layout > section { grid-column: 1 / -1; }
  .ym-inquiry-intro-copy, .ym-inquiry-contacts { grid-column: 1 / -1; }
  .ym-inquiry-layout > .ym-form-section { grid-column: 1 / -1; }
  .ym-inquiry-contacts { display: grid; grid-template-columns: 1fr 1fr; align-items: center; }
  .ym-contact-phone { font-size: 32px; }
  .ym-inquiry-contacts dl { grid-template-columns: 1fr; gap: 8px; }
  .ym-quote-table th:first-child { width: 110px; }
  .ym-quote-table th:nth-child(2), .ym-quote-table th:nth-child(3) { width: 125px; }
  .ym-footer-grid > div, .ym-footer-grid > .ym-footer-company, .ym-footer-grid > .ym-footer-contacts { grid-column: span 6; }
}
@media (min-width: 1024px) and (max-width: 1279px) {
  .ym-specimens { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--ym-gap); }
  .ym-specimen img { height: 120px; }
  .ym-page .ym-specimen:nth-child(3) { order: 4; }
  .ym-page .ym-specimen:nth-child(4) { order: 3; }
}
@media (max-width: 767px) {
  :root { --ym-section-space: 48px; --ym-gap: 20px; }
  html { scroll-padding-top: 84px; }
  body { padding-bottom: calc(66px + env(safe-area-inset-bottom)); }
  .ym-shell { width: calc(100% - 40px); }
  h1 { font-size: 34px; } h2 { font-size: 28px; } h3 { font-size: 24px; }
  .ym-section-heading { margin-bottom: 24px; }
  .ym-section-heading p { font-size: 16px; }
  .ym-header-inner { height: 64px; gap: 12px; }
  .ym-brand { gap: 7px; }
  .ym-brand img { width: 30px; height: 30px; }
  .ym-brand-text strong { font-size: 18px; }
  .ym-brand-text > span { font-size: 11px; }
  .ym-header-actions { gap: 10px; }
  .ym-header-phone, .ym-header-actions > .ym-button { display: none; }
  .ym-quote-link { font-size: 14px; gap: 5px; }
  .ym-quote-count { height: 22px; min-width: 22px; }
  .ym-navigation.ym-open { top: 64px; padding: 16px 20px; max-height: calc(100dvh - 136px); }
  .ym-mobile-actions { display: grid; grid-template-columns: 1fr 1fr; position: fixed; bottom: 0; left: 0; right: 0; z-index: 30; background: var(--ym-bg); border-top: 1px solid var(--ym-input-line); padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); gap: 8px; }
  .ym-mobile-actions a { display: flex; align-items: center; justify-content: center; gap: 12px; font-size: 16px; font-weight: 650; min-height: 48px; }
  .ym-mobile-actions a:last-of-type { background: var(--ym-gold); color: var(--ym-navy); border-radius: var(--ym-radius); }
  .ym-button { min-height: 50px; padding: 12px 17px; gap: 12px; font-size: 16px; }
  .ym-actions { gap: 10px; }
  .ym-home-hero { padding-block: 28px 32px; }
  .ym-hero-grid { gap: 28px; }
  .ym-hero-copy, .ym-specimens { grid-column: 1 / -1; }
  .ym-hero-copy { gap: 20px; }
  .ym-hero-copy h1 { font-size: 32px; }
  .ym-hero-copy p { font-size: 16px; line-height: 1.75; }
  .ym-desktop-break { display: none; }
  .ym-specimens{ grid-template-columns: 1fr 1fr; gap: 20px 16px; }
  /* The peer material links have no sequential meaning; diagonal tones balance 2x2. */
  .ym-page .ym-specimen:nth-child(3) { order: 4; }
  .ym-page .ym-specimen:nth-child(4) { order: 3; }
  .ym-specimen img{ height: 120px; }
  .ym-specimen figcaption{ display: grid; gap: 0; padding-top: 8px; }
  .ym-specimen strong { font-size: 16px; }
  .ym-specimen span { font-size: 15px; white-space: nowrap; }
  .ym-materials { gap: 32px; }
  .ym-material { grid-column: 1 / -1; grid-template-columns: 1fr; gap: 20px; padding-top: 24px; }
  .ym-material-photo, .ym-material-content { grid-column: 1; }
  .ym-material-photo img { height: auto; min-height: 0; aspect-ratio: 1.8; }
  .ym-material-content { gap: 12px; }
  .ym-material-specs { gap: 8px; }
  .ym-material-specs div { grid-template-columns: 68px minmax(0, 1fr); }
  .ym-material-use { font-size: 16px; }
  .ym-section-link { margin-top: 24px; }
  .ym-table-hint { display: block; }
  .ym-selection-table th, .ym-selection-table td { padding: 18px 16px; }
  .ym-quality-layout figure, .ym-checks { grid-column: 1 / -1; }
  .ym-quality-layout figure img { height: auto; aspect-ratio: 3 / 2; }
  .ym-checks { grid-template-rows: auto; }
  .ym-checks > div { padding-block: 18px; }
  .ym-checks dt { font-size: 22px; }
  .ym-checks dd { font-size: 16px; }
  .ym-production-gallery { gap: 24px; }
  .ym-production-gallery figure, .ym-production-gallery figure:first-child { grid-column: 1 / -1; }
  .ym-production-gallery img { height: auto; aspect-ratio: 3 / 2; }
  .ym-production-gallery figure:not(:first-child) img { aspect-ratio: 4 / 5; object-position: center 60%; }
  .ym-article-row { gap: 8px; padding-block: 24px; }
  .ym-article-row time, .ym-article-preview { grid-column: 1 / -1; }
  .ym-article-row time { font-size: 15px; padding-top: 0; }
  .ym-article-preview h3 { font-size: 21px; }
  .ym-article-preview summary { gap: 16px; }
  .ym-contact-band > .ym-shell { padding-top: 28px; }
  .ym-contact-band h2 { font-size: 24px; }
  .ym-contact-band-main { display: grid; gap: 20px; }
  .ym-large-phone { font-size: 36px; }
  .ym-contact-band-details { display: grid; gap: 8px; font-size: 15px; }
  .ym-page-intro { padding-block: 32px; }
  .ym-page-intro p { font-size: 16px; }
  .ym-comparison-row { grid-template-columns: 1fr; gap: 20px; padding-block: 28px; }
  .ym-comparison-photo, .ym-comparison-title, .ym-comparison-specs { grid-column: 1; }
  .ym-comparison-photo img { height: 190px; }
  .ym-comparison-title h2 { font-size: 28px; }
  .ym-comparison-title p { margin: 10px 0; }
  .ym-comparison-specs { gap: 16px; }
  .ym-value { font-size: 22px; }
  .ym-breadcrumb { font-size: 15px; padding-block: 18px; }
  .ym-detail-grid { gap: 28px; }
  .ym-gallery, .ym-detail-copy { grid-column: 1 / -1; }
  .ym-detail-copy { grid-row: 1; }
  .ym-detail-heading p { font-size: 16px; margin-top: 12px; }
  .ym-detail-copy > .ym-actions { order: 0; padding-top: 20px; }
  .ym-gallery { grid-row: 2; }
  .ym-gallery-thumbs { gap: 10px; }
  .ym-gallery-thumb { flex: 1; max-width: 140px; min-width: 0; width: auto; padding: 5px; }
  .ym-gallery-thumb img { height: 70px; }
  .ym-gallery-thumb span { font-size: 15px; white-space: normal; }
  .ym-metrics { gap: 20px 16px; margin-top: 28px; padding-top: 24px; }
  .ym-metric dd { font-size: 21px; }
  .ym-metric:first-child { grid-column: 1 / -1; }
  .ym-metric:first-child dd { font-size: 32px; }
  .ym-metric:nth-last-child(-n+2) { grid-column: 1 / -1; }
  .ym-metric:nth-last-child(-n+2) dd { font-size: 17px; }
  .ym-detail-nav > div { gap: 24px; }
  .ym-detail-nav a { padding-block: 18px; font-size: 15px; }
  .ym-detail-block { padding-top: 40px; scroll-margin-top: 84px; }
  .ym-detail-block > h2, .ym-packaging h2 { font-size: 28px; margin-bottom: 20px; }
  .ym-overview > div, .ym-source-bullets, .ym-tables-layout > section { grid-column: 1 / -1; }
  .ym-source-bullets { padding: 20px 20px 20px 40px; }
  .ym-tables-layout { row-gap: 0; }
  .ym-spec-table th, .ym-spec-table td { padding: 12px 14px; }
  .ym-application-list { grid-template-columns: 1fr; }
  .ym-packaging > div, .ym-packaging figure { grid-column: 1 / -1; }
  .ym-packaging img { height: 320px; }
  .ym-faq-item summary { font-size: 17px; padding-block: 20px; }
  .ym-inquiry-intro { padding-block: 28px 32px; }
  .ym-inquiry-intro-grid { gap: 28px; }
  .ym-inquiry-intro-copy, .ym-inquiry-contacts { grid-column: 1 / -1; }
  .ym-inquiry-intro-copy p { font-size: 16px; margin: 14px 0 20px; }
  .ym-inquiry-contacts { padding-top: 24px; gap: 16px; }
  .ym-contact-phone { font-size: 36px; }
  .ym-inquiry-contacts dl { grid-template-columns: 1fr; gap: 14px; }
  .ym-inquiry-layout > .ym-form-section { grid-column: 1 / -1; }
  .ym-form-section { padding: 24px 18px; scroll-margin-top: 84px; }
  .ym-form-section h2 { font-size: 28px; }
  
  .ym-form-grid { grid-template-columns: 1fr; gap: 24px; }
  .ym-field-wide { grid-column: 1; }
  .ym-form-submit { display: grid; gap: 12px; }
  .ym-form-submit .ym-button { width: 100%; }
  .ym-product-options > div { gap: 8px 18px; }
  .ym-form-success { padding: 20px 16px; }
  .ym-form-success h3 { font-size: 22px; }
  .ym-quote-table thead { display: none; }
  .ym-quote-table, .ym-quote-table tbody { display: block; width: 100%; }
  .ym-quote-table tr { display: grid; grid-template-columns: 1fr; gap: 16px; padding: 24px 0; }
  .ym-quote-table th, .ym-quote-table td { display: block; width: auto !important; padding: 0 !important; }
  .ym-quote-table tbody th { font-size: 22px; display: flex; align-items: center; gap: 12px; }
  
  .ym-quote-table label { position: static; width: auto; height: auto; clip-path: none; white-space: normal; display: block; margin: 0 0 8px; overflow: visible; font-size: 15px; }
  .ym-quote-table td:last-child { text-align: right; }
  .ym-quote-empty { padding: 28px 20px; }
  .ym-quote-empty .ym-text-link { display: flex; margin: 12px 0 0; }
  .ym-footer { padding-top: 36px; }
  .ym-footer-grid { row-gap: 32px; padding-bottom: 32px; }
  .ym-footer-grid > div, .ym-footer-grid > .ym-footer-company, .ym-footer-grid > .ym-footer-contacts { grid-column: 1 / -1; }
  .ym-footer-company > strong { font-size: 20px; }
  .ym-footer ul { gap: 4px; }
  .ym-footer ul a { display: inline-block; padding-block: 6px; }
  .ym-footer-bottom { flex-direction: column; align-items: start; gap: 10px; }
  .ym-footer-bottom .ym-icp { margin-left: 0; }
  
}
@media (max-width: 374px) {
  .ym-brand-text strong { font-size: 17px; }
  .ym-header-actions { gap: 8px; }
  .ym-quote-link { font-size: 13px; }
  .ym-hero-copy h1 { font-size: 30px; }
  .ym-actions > .ym-button { padding-inline: 14px; font-size: 15px; }
  .ym-large-phone, .ym-contact-phone { font-size: 33px; }
  .ym-specimen img{ height: 108px; }
  .ym-inquiry-contacts dd { font-size: 15px; }
}
@media (prefers-reduced-motion: no-preference) {
  .ym-button, .ym-icon-button, .ym-gallery-thumb { transition: transform 140ms ease; }
  .ym-faq-item .ym-icon, .ym-article-preview .ym-icon { transition: transform 180ms ease; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .ym-button:active, .ym-icon-button:active, .ym-gallery-thumb:active { transform: none; }
}