:root {
  --bg: #f7faff;
  --surface: #ffffff;
  --surface-soft: #f3f7fc;
  --ink: #071f4d;
  --muted: #5c6f89;
  --line: #d7e2ef;
  --line-strong: #b9c9dc;
  --accent: #075bd8;
  --accent-dark: #0647a8;
  --green: #16833b;
  --green-dark: #0f6d31;
  --green-soft: #eef9f0;
  --amber: #b66b31;
  --amber-soft: #fff4e7;
  --soft: #edf4fb;
  --radius: 8px;
  --shadow: 0 18px 45px rgba(7, 31, 77, 0.10);
  --shadow-soft: 0 8px 24px rgba(7, 31, 77, 0.06);
  --max: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
.site-shell { min-height: 100vh; display: flex; flex-direction: column; }
.side {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 72px;
  padding: 14px max(28px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid rgba(215, 226, 239, 0.88);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 26px rgba(7, 31, 77, 0.05);
}
.brand { display: flex; align-items: center; gap: 11px; min-width: 230px; }
.brand strong { display: flex; align-items: center; color: var(--ink); font-size: 20px; line-height: 1; font-weight: 820; }
.brand strong::before {
  content: "";
  display: inline-block;
  width: 34px;
  height: 34px;
  margin-right: 10px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, transparent 42%, #fff 42% 53%, transparent 53%),
    linear-gradient(135deg, var(--accent), #0b7f66);
  box-shadow: inset 0 0 0 4px rgba(255,255,255,0.18);
}
.brand span { display: none; }
.nav { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex: 1; }
.nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 8px 10px;
  border-radius: 7px;
  color: #18335f;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
}
.nav a:hover, .nav a:focus-visible, .nav a.active { background: #edf4ff; color: var(--accent-dark); outline: none; }
.nav a:last-child {
  margin-left: 8px;
  min-width: 126px;
  border: 1px solid var(--green);
  background: var(--green);
  color: #fff;
  box-shadow: 0 10px 22px rgba(22, 131, 59, 0.20);
}
.nav small { display: none; }
main { width: 100%; max-width: var(--max); margin: 0 auto; padding: 32px 28px 64px; flex: 1; }
.kicker { margin: 0 0 10px; color: var(--accent); font-size: 12px; font-weight: 820; text-transform: uppercase; letter-spacing: .04em; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 900px; margin-bottom: 14px; color: var(--ink); font-size: 48px; line-height: 1.04; letter-spacing: 0; }
h2 { margin-bottom: 8px; color: var(--ink); font-size: 28px; line-height: 1.16; letter-spacing: 0; }
h3 { margin-bottom: 8px; color: var(--ink); font-size: 17px; line-height: 1.25; letter-spacing: 0; }
.intro { max-width: 780px; margin-bottom: 0; color: var(--muted); line-height: 1.62; font-size: 16px; }
.page-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  gap: 28px;
  align-items: start;
  margin: 22px 0 30px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(90deg, rgba(255,255,255,.95), rgba(255,255,255,.78)),
    radial-gradient(circle at 92% 12%, rgba(7,91,216,.10), transparent 32%),
    var(--surface);
  box-shadow: var(--shadow-soft);
}
.notice { align-self: start; padding: 12px 14px; border: 1px solid #ecd1ad; border-radius: 8px; background: var(--amber-soft); color: #744715; font-size: 13px; line-height: 1.45; }
.band { margin-top: 34px; }
.section-head { display: flex; justify-content: space-between; gap: 18px; align-items: end; margin-bottom: 16px; }
.section-note { max-width: 720px; color: var(--muted); line-height: 1.56; font-size: 14px; }
.grid-2, .grid-3 { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.card, .panel { min-width: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-soft); }
.card { display: grid; gap: 10px; padding: 20px; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.card p { color: var(--muted); line-height: 1.55; font-size: 14px; }
.card:hover { transform: translateY(-2px); border-color: #a9bfda; box-shadow: 0 18px 44px rgba(7, 31, 77, 0.12); }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #fff, #f8fbff); border-radius: 12px 12px 0 0; }
.panel-body { min-width: 0; padding: 18px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { display: inline-flex; align-items: center; min-height: 28px; padding: 5px 9px; border: 1px solid #d4e2f2; border-radius: 999px; background: #f2f7ff; color: #24436e; font-size: 12px; line-height: 1.2; font-weight: 650; }
.tag.warn { border-color: #efd2a6; background: var(--amber-soft); color: #774818; }
.actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 18px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 780;
  font-size: 14px;
  box-shadow: 0 12px 24px rgba(7, 91, 216, 0.18);
}
.button::after { content: "→"; font-weight: 800; }
button.button::after { content: ""; }
.button.secondary { background: #fff; color: var(--accent-dark); box-shadow: none; }
.button[disabled] { cursor: not-allowed; opacity: 0.64; }
.status-note { border: 1px solid var(--line); border-radius: 8px; background: #f8fbff; padding: 12px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.status-note.strong { border-color: #9bd0aa; background: var(--green-soft); color: #184b2b; }
.status-note.warn { border-color: #e1bd7a; background: var(--amber-soft); color: #704512; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.field { display: grid; gap: 7px; }
label { color: #1d3863; font-size: 12px; font-weight: 760; text-transform: capitalize; }
input, select, textarea { width: 100%; min-height: 42px; border: 1px solid #c8d8ea; border-radius: 8px; background: #fff; padding: 10px 11px; color: var(--ink); }
input:focus, select:focus, textarea:focus { outline: 3px solid rgba(7,91,216,.14); border-color: var(--accent); }
textarea { min-height: 108px; resize: vertical; }
.table-wrap { max-width: 100%; min-width: 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.table-wrap.key-value-table { overflow-x: visible; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
.key-value-table table { min-width: 0; }
th, td { padding: 12px 13px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 13px; }
th { background: #f2f7ff; color: #1e3d6f; font-size: 12px; text-transform: uppercase; }
td { color: #31445f; }
.split { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr); gap: 18px; }
.summary-box { display: grid; gap: 14px; }
.summary-box ul, .panel-body ul { margin: 0; padding-left: 18px; color: #334b69; line-height: 1.6; font-size: 14px; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 30px; }
.metric { padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-soft); }
.metric b { display: block; color: var(--accent); font-size: 28px; line-height: 1.05; overflow-wrap: anywhere; }
.metric span { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; }
.model-metrics { align-items: stretch; }
.model-metric { display: grid; align-content: start; gap: 8px; min-height: 118px; }
.model-metric b { font-size: 24px; line-height: 1.12; }
.model-metric.is-long b { font-size: 20px; line-height: 1.18; }
.model-metric span { margin-top: 0; }
.buyer-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.buyer-cell { padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.buyer-cell span { display: block; margin-bottom: 8px; color: var(--accent); font-size: 12px; font-weight: 820; text-transform: uppercase; }
.buyer-cell strong { display: block; min-height: 42px; color: var(--ink); font-size: 18px; line-height: 1.2; }
.buyer-cell p { margin: 10px 0 0; color: var(--muted); font-size: 13px; line-height: 1.45; }
.supplier-hero {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(430px, .9fr);
  gap: 34px;
  align-items: center;
  min-height: 620px;
  margin: 10px calc((var(--max) - 100vw) / 2) 0;
  padding: 62px max(28px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(247,250,255,.98) 0%, rgba(247,250,255,.84) 45%, rgba(247,250,255,.2) 100%),
    radial-gradient(circle at 58% 28%, rgba(7,91,216,.10), transparent 28%),
    #f7faff;
}
.supplier-copy h1 { font-size: 62px; line-height: 1.02; max-width: 760px; }
.supplier-copy .intro { font-size: 17px; max-width: 650px; }
.trust-strip { display: flex; flex-wrap: wrap; gap: 0; margin-top: 26px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.92); box-shadow: var(--shadow-soft); overflow: hidden; }
.trust-strip .tag { flex: 1 1 160px; justify-content: center; min-height: 44px; border: 0; border-right: 1px solid var(--line); border-radius: 0; background: transparent; color: #18335f; }
.trust-strip .tag:last-child { border-right: 0; }
.product-visual { display: grid; gap: 14px; min-height: 430px; padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.product-visual.hero-atmosphere { position: relative; min-height: 500px; overflow: hidden; padding: 0; background: linear-gradient(135deg, #edf4fb, #fff); }
.product-visual.hero-atmosphere img { display: block; width: 100%; height: 100%; min-height: 500px; object-fit: cover; border: 0; border-radius: 16px; }
.visual-photo { display: block; width: 100%; height: 196px; object-fit: contain; padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; box-shadow: var(--shadow-soft); }
.feature-band { display: grid; grid-template-columns: minmax(0, .86fr) minmax(360px, .64fr); gap: 18px; align-items: stretch; margin: 26px 0 34px; }
.feature-panel { display: grid; align-content: center; padding: 28px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(135deg, rgba(7,91,216,.08), transparent 52%), var(--surface); box-shadow: var(--shadow-soft); }
.feature-panel h2 { font-size: 32px; }
.feature-band.selector-intro { grid-template-columns: minmax(0, .95fr) minmax(320px, .55fr); align-items: center; }
.feature-band.selector-intro .feature-panel { min-height: 280px; }
.feature-band.selector-intro .compact-band.visual-card { min-height: 280px; padding: 10px; }
.feature-band.selector-intro .compact-band.visual-card img { aspect-ratio: auto; height: 260px; object-fit: contain; }
.atmosphere-visual { padding: 10px; }
.atmosphere-visual img, .compact-band.visual-card img { display: block; width: 100%; aspect-ratio: 1 / 1; object-fit: cover; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.product-family { position: relative; overflow: hidden; min-height: 330px; padding-top: 225px; }
.product-family img, .image-card > img { position: absolute; left: 16px; top: 16px; width: calc(100% - 32px); height: 190px; object-fit: contain; padding: 10px; border: 1px solid var(--line); border-radius: 10px; background: #f8fbff; }
.image-card { overflow: hidden; padding-top: 225px; position: relative; }
.image-card > img { object-fit: cover; padding: 0; }
.product-family::before, .product-family::after { display: none; }
.options-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.options-list li { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); color: #334b69; font-size: 14px; }
.options-list li:last-child { border-bottom: 0; }
.doc-card { min-height: 220px; }
.doc-card::before { display: none; }
.doc-card.has-image { padding-top: 226px; }
.series-visual { display: grid; grid-template-columns: minmax(0, .58fr) minmax(0, 1fr); gap: 18px; align-items: stretch; }
.series-visual img { width: 100%; height: 260px; object-fit: contain; padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: #f8fbff; }
.rfq-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .42fr); gap: 18px; align-items: start; }
.rfq-sidebar { position: sticky; top: 92px; }
.compact-band { display: grid; gap: 10px; padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: #fff; box-shadow: var(--shadow-soft); }
.selector-result-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .42fr);
  gap: 18px;
  align-items: stretch;
  padding: 26px;
  border: 1px solid #bfd2e8;
  border-radius: 14px;
  background:
    radial-gradient(circle at 90% 10%, rgba(7, 91, 216, .10), transparent 34%),
    linear-gradient(135deg, #fff, #f4f8ff);
  box-shadow: var(--shadow-soft);
}
.selector-result-main { display: grid; align-content: start; gap: 12px; }
.selector-result-main h2 { max-width: 700px; margin: 0; font-size: 30px; }
.selector-result-main p { max-width: 760px; margin: 0; color: var(--muted); line-height: 1.55; }
.result-pill {
  display: inline-flex;
  width: fit-content;
  min-height: 28px;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  background: #eaf3ff;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 820;
  text-transform: uppercase;
}
.result-side {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.result-side ul { margin: 0; padding-left: 18px; color: #334b69; line-height: 1.65; font-size: 14px; }
.selector-result-details { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); gap: 18px; }
.selector-result-details[hidden] { display: none; }
.result-panel { min-width: 0; border: 1px solid var(--line); border-radius: 12px; background: #fff; box-shadow: var(--shadow-soft); }
.result-panel.primary { border-color: #a8c4e7; }
.result-panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.result-panel-head h2, .result-panel-head h3 { margin: 0; }
.result-panel-body { padding: 18px; }
.result-copy {
  min-height: 0;
  white-space: pre-wrap;
  overflow: auto;
  border: 1px solid #d7e2ef;
  border-radius: 10px;
  background: #f8fbff;
  padding: 14px;
  color: #1d3354;
  font-size: 14px;
  line-height: 1.65;
}
.result-copy.email { max-height: 300px; }
.result-stack { display: grid; gap: 18px; }
.result-panel details, details.result-panel { overflow: hidden; }
details.result-panel summary {
  cursor: pointer;
  padding: 16px 18px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 820;
}
.output-box { width: 100%; min-height: 220px; white-space: pre-wrap; overflow: auto; border: 1px solid #c8d8ea; border-radius: 8px; background: #f8fbff; padding: 13px; color: #1d3354; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; line-height: 1.55; }
.output-box.compact-output { min-height: 150px; }
.check-grid { display: grid; gap: 7px; padding: 10px 11px; border: 1px solid #c8d8ea; border-radius: 8px; background: #fff; }
.check-option { display: flex; align-items: center; gap: 8px; color: #334b69; font-size: 13px; text-transform: none; }
.check-option input { width: auto; min-height: 0; }
.problem-card img { object-fit: cover; }
.text-link { color: var(--accent); font-size: 13px; font-weight: 800; }
.product-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; }
.product-card { min-height: 286px; padding-top: 160px; }
.product-card > img { height: 128px; object-fit: contain; padding: 10px; }
.selector-preview { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, .55fr); gap: 18px; align-items: stretch; }
.recommendation-card {
  position: relative;
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 24px;
  border: 1px solid #9bd0aa;
  border-radius: 14px;
  background: linear-gradient(180deg, var(--green-soft), #fff 42%);
  box-shadow: var(--shadow-soft);
}
.recommendation-card b { color: var(--green); font-size: 26px; }
.recommendation-card p { color: var(--muted); line-height: 1.55; }
.recommendation-card img { width: 100%; height: 170px; object-fit: contain; margin: 4px 0; }
.status-dot { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 999px; background: var(--green); color: #fff; font-weight: 900; }
.application-row { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.application-tile { display: grid; gap: 10px; text-align: center; color: var(--ink); font-weight: 780; }
.application-tile img { width: 100%; height: 128px; object-fit: cover; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow-soft); }
.rfq-home {
  display: grid;
  grid-template-columns: minmax(0, .62fr) minmax(420px, 1fr);
  gap: 24px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(135deg, #fff, #f2f7ff);
  box-shadow: var(--shadow-soft);
}
.rfq-home ul { margin: 16px 0 0; padding-left: 20px; color: #24436e; line-height: 1.7; }
.rfq-mini-form { display: grid; gap: 14px; }
.upload-box { display: grid; place-items: center; min-height: 110px; border: 1px dashed #9eb5d1; border-radius: 12px; background: #fff; color: var(--muted); font-weight: 720; }
.attachment-panel .upload-box {
  min-height: 170px;
  padding: 18px;
  text-align: center;
  background:
    linear-gradient(180deg, rgba(255,255,255,.85), rgba(255,255,255,.92)),
    radial-gradient(circle at 50% 28%, rgba(7,91,216,.10), transparent 28%),
    #f8fbff;
}
.attachment-panel .upload-box::before {
  content: "@";
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin: 0 auto 10px;
  border-radius: 999px;
  background: #edf4ff;
  color: var(--accent);
  font-size: 24px;
}
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.quality-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow-soft); }
.quality-item { padding: 20px; border-right: 1px solid var(--line); }
.quality-item:last-child { border-right: 0; }
.quality-item strong { display: block; margin-bottom: 6px; color: var(--ink); }
.quality-item span { color: var(--muted); font-size: 13px; line-height: 1.45; }
.catalog-sheet-grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(360px, 1fr); gap: 18px; align-items: start; }
.catalog-spec-card, .catalog-drawing-card { min-width: 0; }
.spec-table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.spec-table { min-width: 0; }
.catalog-drawing-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.catalog-drawing-figure { margin: 0; }
.catalog-drawing-figure img { display: block; width: 100%; height: 280px; object-fit: contain; padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.catalog-drawing-figure figcaption { margin-top: 6px; color: var(--muted); font-size: 12px; }
.drawing-dimensions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 14px 0; }
.drawing-dimension { padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: #f8fbff; }
.drawing-dimension span { display: block; margin-bottom: 4px; color: var(--muted); font-size: 12px; }
.drawing-dimension strong { display: block; color: var(--ink); font-size: 17px; overflow-wrap: anywhere; }
.catalog-sheet-review { border-top: 1px solid var(--line); background: #fbfcff; }
.site-footer { margin-top: 20px; background: linear-gradient(135deg, #061b43, #083d78); color: #eaf2ff; }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 42px 28px; display: grid; grid-template-columns: 1.4fr .75fr .75fr 1fr; gap: 28px; }
.footer-brand { display: block; margin-bottom: 12px; color: #fff; font-size: 20px; font-weight: 820; }
.site-footer p, .site-footer a, .footer-contact span { display: block; color: #c8d8ee; font-size: 14px; line-height: 1.55; }
.site-footer h3 { color: #fff; font-size: 15px; }
.site-footer a { margin: 7px 0; }
.footer-button { display: inline-flex !important; margin-top: 10px !important; color: #fff !important; }
@media (min-width: 981px) {
  #selector-form .band, #rfq-form .band { margin-top: 18px; }
  #selector-form .form-grid, #rfq-form .form-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 11px; }
  #selector-form textarea, #rfq-form textarea { min-height: 90px; }
  #selector-form + .band .output-box, .rfq-layout .output-box { min-height: 180px; }
  .rfq-layout .output-box.compact-output { min-height: 132px; }
}
@media (max-width: 980px) {
  .side { align-items: flex-start; flex-direction: column; padding: 14px 22px; }
  .nav { justify-content: flex-start; flex-wrap: wrap; }
  main { padding: 24px 20px 50px; }
  .supplier-hero, .page-head, .feature-band, .series-visual, .rfq-layout, .split { grid-template-columns: 1fr; }
  .selector-result-shell, .selector-result-details { grid-template-columns: 1fr; }
  .supplier-hero { margin: 0 -20px; padding: 42px 20px; min-height: 0; }
  .supplier-copy h1 { font-size: 42px; }
  .product-visual.hero-atmosphere, .product-visual.hero-atmosphere img { min-height: 360px; }
  .rfq-sidebar { position: static; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .catalog-sheet-grid { grid-template-columns: 1fr; }
  .grid-3, .grid-4, .product-grid, .application-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .selector-preview, .rfq-home { grid-template-columns: 1fr; }
  .metrics, .buyer-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .model-metric b { font-size: 22px; }
  .model-metric.is-long b { font-size: 18px; }
}
@media (max-width: 620px) {
  .side { padding: 13px 16px; }
  .brand strong { font-size: 18px; }
  .nav a { padding: 7px 8px; font-size: 13px; }
  .nav a:last-child { width: 100%; margin-left: 0; }
  main { padding: 20px 16px 44px; }
  h1 { font-size: 34px; line-height: 1.08; }
  h2 { font-size: 24px; }
  .page-head { padding: 22px; }
  .supplier-hero { margin: 0 -16px; padding: 34px 16px; }
  .supplier-copy h1 { font-size: 38px; }
  .grid-2, .grid-3, .grid-4, .product-grid, .application-row, .form-grid, .metrics, .buyer-strip, .footer-inner, .quality-strip { grid-template-columns: 1fr; }
  .model-metric { min-height: 0; padding: 16px; }
  .model-metric b, .model-metric.is-long b { font-size: 21px; line-height: 1.16; }
  .drawing-dimensions { grid-template-columns: 1fr; }
  .catalog-drawing-grid { grid-template-columns: 1fr; }
  .catalog-drawing-figure img { height: auto; max-height: none; }
  .section-head { display: grid; }
  .card, .panel-body, .feature-panel, .compact-band { padding: 16px; }
  .panel-head { align-items: flex-start; flex-direction: column; padding: 14px 16px; }
  .key-value-table table, .key-value-table tbody, .key-value-table tr, .key-value-table th, .key-value-table td,
  .spec-table-wrap table, .spec-table-wrap tbody, .spec-table-wrap tr, .spec-table-wrap th, .spec-table-wrap td { display: block; width: 100%; min-width: 0; }
  .key-value-table tr, .spec-table-wrap tr { border-bottom: 1px solid var(--line); }
  .key-value-table th, .key-value-table td, .spec-table-wrap th, .spec-table-wrap td { border-bottom: 0; }
  .key-value-table th, .spec-table-wrap th { padding-bottom: 3px; }
  .key-value-table td, .spec-table-wrap td { padding-top: 3px; }
  .heater-table { overflow-x: visible; }
  .heater-table table { min-width: 0; }
  .heater-table th, .heater-table td { overflow-wrap: anywhere; }
  .product-family, .image-card, .doc-card.has-image { padding-top: 184px; }
  .product-family img, .image-card > img { height: 150px; }
  .product-card { padding-top: 170px; }
  .quality-item { border-right: 0; border-bottom: 1px solid var(--line); }
  .quality-item:last-child { border-bottom: 0; }
  .button { width: 100%; min-height: 42px; }
  .panel-head .actions, .panel-head .button { width: 100%; }
  input, select, textarea { font-size: 16px; }
  .output-box { min-height: 170px; max-height: 360px; font-size: 11px; }
}