:root {
  --ink: #101820;
  --muted: #5d6874;
  --line: #d8e0e8;
  --blue: #075eaa;
  --blue-dark: #063d70;
  --yellow: #d8a116;
  --paper: #ffffff;
  --soft: #eef3f8;
  --steel: #cbd4dc;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, "Helvetica Neue", sans-serif;
  letter-spacing: 0;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 72px;
  padding: 0 5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: baseline; gap: 12px; white-space: nowrap; }
.brand strong { color: var(--blue); font-size: 29px; }
.brand span { font-size: 12px; font-weight: 700; color: #475564; }
nav { display: flex; align-items: center; gap: 22px; font-size: 13px; font-weight: 700; }
nav a { padding: 10px 0; }
.nav-cta { padding: 11px 16px; color: #fff; background: var(--blue); }

.hero {
  min-height: 720px;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(450px, .96fr);
  align-items: center;
  overflow: hidden;
  background: var(--ink);
}
.hero-copy { padding: 80px 4vw 72px 8vw; color: #fff; }
.eyebrow { margin: 0 0 12px; color: var(--blue); font-size: 13px; font-weight: 800; text-transform: uppercase; }
.eyebrow.light { color: #72b9ef; }
.model { margin: 0 0 8px; color: var(--yellow); font-size: 21px; font-weight: 800; }
h1, h2, h3, p { letter-spacing: 0; }
h1 { max-width: 780px; margin: 0; font-size: clamp(44px, 5.4vw, 78px); line-height: 1.02; }
.hero-lead { max-width: 720px; margin: 26px 0 30px; color: #cbd6df; font-size: 18px; line-height: 1.65; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 21px; border: 1px solid transparent; font-size: 14px; font-weight: 800; }
.button.primary { color: #fff; background: var(--blue); }
.button.secondary { color: #fff; border-color: #516170; background: transparent; }
.hero-meta { margin-top: 42px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-meta span { min-width: 145px; padding: 13px 15px; color: #aebbc6; border-left: 2px solid var(--yellow); font-size: 12px; }
.hero-meta b { display: block; margin-bottom: 3px; color: #fff; font-size: 16px; }
.hero-product {
  position: relative;
  align-self: stretch;
  min-height: 720px;
  display: grid;
  place-items: center;
  background: #eaf0f5;
  border-left: 1px solid #303b45;
  overflow: hidden;
}
.hero-product::before {
  content: "";
  position: absolute;
  inset: 8% 8%;
  border: 1px solid #c8d3dc;
}
.hero-product::after {
  content: "FACTORY SERIES / 9091";
  position: absolute;
  right: 24px;
  bottom: 48px;
  color: #9aa8b4;
  font-size: 11px;
  font-weight: 800;
  writing-mode: vertical-rl;
}
.hero-product img { position: relative; z-index: 2; width: min(88%, 720px); max-height: 690px; object-fit: contain; }
.spec-chip { position: absolute; z-index: 3; top: 32px; left: 32px; padding: 10px 13px; color: #fff; background: var(--blue); font-size: 12px; font-weight: 800; }
.hero-caption { position: absolute; z-index: 3; left: 32px; bottom: 28px; color: #4b5966; font-size: 12px; font-weight: 700; }

.trust-strip { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--blue); color: #fff; }
.trust-strip div { min-height: 125px; padding: 28px 30px; border-right: 1px solid rgba(255,255,255,.22); }
.trust-strip strong, .trust-strip span { display: block; }
.trust-strip strong { margin-bottom: 8px; font-size: 16px; }
.trust-strip span { color: #d5e7f6; font-size: 13px; line-height: 1.5; }

.section { padding: 96px max(6vw, 40px); }
.section-heading { max-width: 1280px; margin: 0 auto 42px; }
.section-heading h2 { margin: 0; max-width: 850px; font-size: clamp(34px, 4vw, 54px); line-height: 1.08; }
.section-heading > p:last-child { max-width: 700px; margin: 18px 0 0; color: var(--muted); font-size: 16px; line-height: 1.7; }
.split-heading { display: grid; grid-template-columns: 1fr .8fr; align-items: end; gap: 60px; }
.split-heading > p:last-child { margin: 0; }
.feature-grid { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feature-grid article { min-height: 260px; padding: 30px 26px; border-right: 1px solid var(--line); }
.feature-grid article:last-child { border-right: 0; }
.feature-grid span { color: var(--yellow); font-size: 25px; font-weight: 800; }
.feature-grid h3 { margin: 42px 0 12px; font-size: 21px; }
.feature-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

.detail-band { padding: 96px max(6vw, 40px); color: #fff; background: #17212a; }
.inverse h2 { color: #fff; }
.inverse > p:last-child { color: #b7c5d0; }
.detail-grid { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.detail-grid article { overflow: hidden; background: #222e38; border: 1px solid #3a4752; }
.detail-image { height: 260px; background: #eef3f8 url("assets/premium/bk-9091-silver-transparent-v2.png") no-repeat; }
.detail-image.rim { background-size: 150%; background-position: 50% 4%; }
.detail-image.slot { background-size: 145%; background-position: 50% 48%; }
.detail-image.body { background-size: 128%; background-position: 50% 39%; }
.detail-image.shank { background-size: 140%; background-position: 50% 100%; }
.detail-grid article > div:last-child { padding: 22px; }
.detail-grid b, .detail-grid span { display: block; }
.detail-grid b { margin-bottom: 8px; font-size: 17px; }
.detail-grid span { color: #b8c5ce; font-size: 13px; line-height: 1.55; }

.sizes-section { background: var(--soft); }
.size-family-stage { position: relative; max-width: 1280px; min-height: 520px; margin: 0 auto; padding: 66px 18px 94px; background: #fff; border: 1px solid var(--line); overflow: hidden; }
.size-family-stage::before { content: "3-200MM PRODUCT FAMILY"; position: absolute; top: 22px; left: 24px; color: #8a98a4; font-size: 11px; font-weight: 800; }
.size-family-stage > img { width: 100%; height: 350px; object-fit: contain; object-position: center bottom; }
.size-family-labels { position: absolute; inset: auto 0 22px; height: 58px; }
.size-marker { position: absolute; width: 118px; transform: translateX(-50%); text-align: center; }
.size-marker::before { content: ""; display: block; width: 1px; height: 18px; margin: 0 auto 7px; background: var(--blue); }
.size-marker b, .size-marker span { display: block; }
.size-marker b { color: var(--blue); font-size: 18px; }
.size-marker span { margin-top: 4px; color: var(--muted); font-size: 10px; }
.size-marker.m1 { left: 4%; }
.size-marker.m2 { left: 12%; }
.size-marker.m3 { left: 25%; }
.size-marker.m4 { left: 50%; }
.size-marker.m5 { left: 82%; }
.scale-note { max-width: 1280px; margin: 10px auto 48px; color: #687681; font-size: 12px; text-align: center; }
.spec-layout { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.spec-summary, .sample-table { padding: 34px; background: #fff; border: 1px solid var(--line); }
.spec-summary dl { margin: 0; }
.spec-summary dl div { display: grid; grid-template-columns: 160px 1fr; gap: 16px; padding: 13px 0; border-bottom: 1px solid #e2e8ed; }
.spec-summary dt { color: var(--muted); font-size: 13px; }
.spec-summary dd { margin: 0; font-size: 14px; font-weight: 700; }
.sample-table table { width: 100%; border-collapse: collapse; }
.sample-table th, .sample-table td { padding: 13px 12px; border-bottom: 1px solid #e2e8ed; font-size: 14px; text-align: left; }
.sample-table th { width: 44%; color: var(--muted); font-weight: 500; }
.sample-table td { font-weight: 700; }

.applications { padding: 96px max(4vw, 24px); background: #111920; color: #fff; }
.compact { margin-bottom: 30px; }
.applications > img { width: 100%; max-width: 1536px; margin: 0 auto; border: 1px solid #35434f; }
.application-labels { max-width: 1536px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); background: var(--blue); }
.application-labels span { padding: 16px; border-right: 1px solid rgba(255,255,255,.25); font-size: 14px; font-weight: 800; text-align: center; }

.tool-section { background: #fff; }
.tool-grid { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.tool-grid article { min-height: 250px; padding: 28px; background: var(--soft); border-top: 3px solid var(--blue); }
.tool-symbol { width: 44px; height: 44px; display: grid; place-items: center; color: #fff; background: var(--ink); font-weight: 900; }
.tool-grid h3 { margin: 42px 0 10px; font-size: 20px; }
.tool-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }

.process-band { padding: 88px max(6vw, 40px); background: var(--blue-dark); color: #fff; }
.process-grid { max-width: 1280px; margin: 0 auto; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; }
.process-grid li { min-height: 220px; padding: 26px; border: 1px solid rgba(255,255,255,.18); border-right: 0; }
.process-grid li:last-child { border-right: 1px solid rgba(255,255,255,.18); }
.process-grid b, .process-grid strong, .process-grid span { display: block; }
.process-grid b { color: #78c4f5; font-size: 25px; }
.process-grid strong { margin: 40px 0 10px; font-size: 18px; }
.process-grid span { color: #c5d7e4; font-size: 13px; line-height: 1.55; }

.packaging { background: var(--soft); }
.package-grid { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.package-card { overflow: hidden; background: #fff; border: 1px solid var(--line); }
.package-card h3 { margin: 20px 20px 9px; font-size: 18px; }
.package-card p { min-height: 68px; margin: 0 20px 22px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.package-visual { height: 250px; position: relative; display: grid; place-items: center; overflow: hidden; background: #e7edf2; }
.package-visual img { max-width: 80%; max-height: 88%; object-fit: contain; }
.package-visual.bulk { background: #dce4ea; }
.package-visual.bulk::before { content: "PROTECTED"; position: absolute; top: 16px; left: 16px; color: #687987; font-size: 10px; font-weight: 800; }
.package-visual.retail { background: var(--blue); }
.package-visual.retail span { position: absolute; top: 18px; left: 18px; color: #fff; font-size: 23px; font-weight: 900; }
.package-visual.retail img { max-height: 76%; margin-top: 36px; }
.package-visual.label { align-content: center; justify-items: start; padding: 35px; background: #fff; border: 14px solid #d7e0e8; }
.package-visual.label b, .package-visual.label strong, .package-visual.label small { display: block; }
.package-visual.label b { color: var(--blue); font-size: 18px; }
.package-visual.label strong { margin: 16px 0 7px; font-size: 42px; }
.package-visual.label small { color: var(--muted); line-height: 1.4; }
.package-visual.carton { align-content: center; justify-items: start; padding: 34px; color: #2d251b; background: #cba975; }
.package-visual.carton span, .package-visual.carton b, .package-visual.carton small { display: block; }
.package-visual.carton span { font-size: 28px; font-weight: 900; }
.package-visual.carton b { margin: 7px 0 32px; font-size: 13px; }
.package-visual.carton small { padding-top: 12px; border-top: 1px solid #6d5b40; font-size: 10px; }

.quote-section { padding: 92px max(6vw, 40px); display: grid; grid-template-columns: 1fr .8fr; gap: 70px; align-items: center; color: #fff; background: var(--ink); }
.quote-section h2 { max-width: 700px; margin: 0; font-size: clamp(36px, 4vw, 58px); line-height: 1.08; }
.quote-section > div:first-child > p:last-child { max-width: 700px; color: #b9c6d0; line-height: 1.7; }
.quote-box { padding: 34px; background: #202c36; border-left: 3px solid var(--yellow); }
.quote-box strong { font-size: 18px; }
.quote-box p { margin: 16px 0 26px; color: #c9d5de; font-size: 14px; line-height: 1.7; }
footer { min-height: 110px; padding: 30px max(6vw, 40px); display: flex; align-items: center; justify-content: space-between; gap: 30px; background: #080d11; color: #fff; }
footer div { display: flex; align-items: baseline; gap: 12px; }
footer strong { color: #72b9ef; font-size: 26px; }
footer span, footer p { color: #8e9ca7; font-size: 12px; }

@media (max-width: 1000px) {
  .topbar { position: relative; padding: 16px 24px; }
  nav { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { padding: 70px 7vw 55px; }
  .hero-product { min-height: 560px; border-left: 0; border-top: 1px solid #303b45; }
  .hero-product img { max-height: 540px; }
  .trust-strip, .feature-grid, .detail-grid, .tool-grid, .process-grid, .package-grid { grid-template-columns: repeat(2, 1fr); }
  .split-heading, .spec-layout, .quote-section { grid-template-columns: 1fr; }
  .split-heading { gap: 24px; }
  .size-family-stage { min-height: 440px; }
  .size-family-stage > img { height: 290px; }
}

@media (max-width: 650px) {
  .brand span { display: none; }
  .hero { min-height: auto; }
  .hero-copy { padding: 54px 22px 42px; }
  h1 { font-size: 43px; }
  .hero-lead { font-size: 16px; }
  .hero-product { min-height: 430px; }
  .hero-product img { width: 96%; max-height: 420px; }
  .spec-chip { top: 18px; left: 18px; }
  .hero-caption { left: 18px; bottom: 18px; }
  .hero-meta { display: grid; grid-template-columns: 1fr 1fr; }
  .trust-strip, .feature-grid, .detail-grid, .tool-grid, .process-grid, .package-grid { grid-template-columns: 1fr; }
  .trust-strip div, .feature-grid article { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.2); }
  .section, .detail-band, .applications, .process-band, .quote-section { padding: 66px 20px; }
  .section-heading h2 { font-size: 36px; }
  .size-family-stage { min-height: 320px; padding: 54px 5px 18px; overflow: visible; }
  .size-family-stage > img { height: 175px; }
  .size-family-labels { position: static; height: auto; margin-top: 18px; display: grid; grid-template-columns: repeat(5, 1fr); }
  .size-marker { position: static; width: auto; transform: none; }
  .size-marker::before { display: none; }
  .size-marker b { font-size: 12px; }
  .size-marker span { font-size: 7px; line-height: 1.2; }
  .spec-summary, .sample-table { padding: 24px 18px; }
  .spec-summary dl div { grid-template-columns: 115px 1fr; }
  .application-labels span { padding: 11px 4px; font-size: 9px; }
  footer { align-items: flex-start; flex-direction: column; padding: 30px 20px; }
}