:root {
  --bg: #07101c;
  --cyan: #17c6d3;
  --cyan-strong: #11b6bd;
  --ink: #07101c;
  --slate: #607386;
  --muted: #8aa0b4;
  --line: rgba(11, 31, 48, 0.12);
  --radius-sm: 10px;
  --radius-md: 16px;
  --shadow-soft: 0 18px 46px rgba(3, 10, 20, 0.09);
  --shadow-lift: 0 28px 70px rgba(3, 10, 20, 0.16);
  --font-body: "Manrope", "Noto Sans SC", Arial, sans-serif;
  --font-display: "Rajdhani", "Noto Sans SC", Arial, sans-serif;
  --font-tech: "Orbitron", "Noto Sans SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 18px 4vw;
  background: rgba(255, 255, 255, 0.97);
  color: var(--ink);
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 36px rgba(3, 10, 20, 0.08);
  transition: top 0.32s ease, left 0.32s ease, right 0.32s ease, gap 0.32s ease, padding 0.32s ease, border-radius 0.32s ease, box-shadow 0.32s ease;
}

.site-header.is-scrolled {
  left: 18px;
  right: 18px;
  top: 14px;
  gap: 20px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  box-shadow: 0 16px 42px rgba(3, 10, 20, 0.16);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: inline-grid;
  width: 50px;
  height: 50px;
  place-items: center;
  overflow: hidden;
  background: transparent;
  transition: width 0.32s ease, height 0.32s ease;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.site-header.is-scrolled .brand-mark {
  width: 44px;
  height: 44px;
}

.brand strong {
  display: block;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1;
}

.brand em {
  display: none;
}

.nav {
  display: flex;
  justify-content: center;
  align-self: stretch;
  align-items: center;
  gap: clamp(12px, 1.6vw, 26px);
  color: #536176;
  font-size: 13px;
  font-weight: 700;
}

.nav a {
  position: relative;
  display: inline-flex;
  min-height: 34px;
  align-items: center;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -7px;
  height: 3px;
  border-radius: 999px;
  background: var(--cyan);
  opacity: 0;
  transform: scaleX(0.72);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.nav a:hover,
.nav a.is-active {
  color: var(--ink);
}

.nav a:hover::after,
.nav a.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.header-cta,
.rfq-strip a,
.footer-contact a,
.project-form button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.24s ease, box-shadow 0.24s ease, background 0.24s ease;
}

.header-cta {
  min-width: 112px;
  padding: 0 20px;
  background: var(--ink);
  color: #fff;
}

.header-cta:hover,
.rfq-strip a:hover,
.footer-contact a:hover,
.project-form button:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 38px rgba(23, 198, 211, 0.22);
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(520px, 1.04fr);
  gap: clamp(48px, 7vw, 110px);
  align-items: center;
  min-height: 640px;
  padding: 128px 4vw 80px;
  background: #fff;
}

.page-hero.is-dark {
  gap: 0;
  grid-template-columns: minmax(0, 0.96fr) minmax(520px, 1.04fr);
  padding: 78px 0 0;
  background: var(--bg);
  color: #fff;
}

.page-hero-copy {
  max-width: 580px;
}

.page-hero.is-dark .page-hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 560px;
  padding: 76px 4vw 84px;
  background:
    repeating-linear-gradient(116deg, rgba(23, 198, 211, 0.12) 0 1px, transparent 1px 30px),
    linear-gradient(90deg, #07101c, #071826);
}

.page-hero-media {
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: #f3f8fb;
}

.page-hero.is-dark .page-hero-media {
  min-height: 560px;
  border-radius: 0;
}

.page-hero-media img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
}

.page-hero.is-dark .page-hero-media img {
  min-height: 560px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--cyan-strong);
  font-family: var(--font-tech);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 4.8vw, 72px);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(34px, 3.7vw, 56px);
  line-height: 1.08;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.14;
}

.page-hero p:not(.eyebrow),
.section-head p {
  max-width: 760px;
  color: var(--slate);
  font-size: 17px;
}

.page-hero.is-dark p:not(.eyebrow) {
  color: #c5d1dc;
}

.section {
  padding: 96px 4vw;
}

.section-head {
  width: min(92vw, 1380px);
  margin: 0 auto 38px;
}

.content-grid,
.step-grid,
.route-table,
.pill-grid,
.rfq-layout {
  width: min(92vw, 1380px);
  margin: 0 auto;
}

.content-grid {
  display: grid;
  gap: 36px 44px;
}

.content-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.content-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.content-grid.four {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.content-card,
.step-grid article,
.route-table article,
.pill-grid span,
.project-form,
.contact-panel article {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 14px 34px rgba(3, 10, 20, 0.055);
}

.content-card {
  overflow: hidden;
  transition: transform 0.38s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.38s ease, border-color 0.38s ease;
}

.content-card:hover,
.step-grid article:hover {
  transform: translateY(-7px);
  border-color: rgba(23, 198, 211, 0.34);
  box-shadow: var(--shadow-lift);
}

.content-card img {
  width: calc(100% - 36px);
  height: 220px;
  margin: 18px 18px 0;
  object-fit: cover;
  border-radius: 8px;
  background: #f4f8fb;
}

.content-card div {
  padding: 26px 28px 30px;
}

.content-card span,
.content-card strong,
.route-table span {
  display: block;
  color: var(--cyan-strong);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 800;
}

.content-card span:first-child {
  margin-bottom: 14px;
}

.content-card span:first-child:is(:where(span)) {
  letter-spacing: 0.04em;
}

.content-card p,
.step-grid p,
.route-table p,
.project-form input,
.contact-panel p {
  color: var(--slate);
}

.content-card small {
  display: block;
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid rgba(11, 31, 48, 0.1);
  color: #8aa0b4;
  font-size: 12px;
  font-weight: 600;
}

.content-card strong {
  width: fit-content;
  margin-top: 24px;
  padding: 7px 12px;
  border-radius: 999px;
  background: #e9f8fb;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px 28px;
}

.step-grid article {
  min-height: 164px;
  padding: 28px;
}

.step-grid span {
  display: block;
  margin-bottom: 10px;
  color: var(--cyan-strong);
  font-family: var(--font-tech);
  font-size: 26px;
  font-weight: 800;
}

.route-table {
  display: grid;
  gap: 22px;
}

.route-table article {
  display: grid;
  grid-template-columns: 260px 280px 1fr;
  align-items: center;
  gap: 28px;
  min-height: 78px;
  padding: 0 28px;
}

.route-table p {
  margin-bottom: 0;
}

.pill-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 26px;
}

.pill-grid span {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 800;
}

.pill-grid span::before {
  content: "";
  width: 32px;
  height: 32px;
  border: 3px solid var(--cyan);
  border-radius: 50%;
  background: #effbfc;
}

.rfq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.65fr);
  gap: 70px;
  align-items: start;
}

.project-form {
  display: grid;
  gap: 26px;
  padding: 42px;
}

.project-form label {
  display: grid;
  gap: 10px;
  font-size: 13px;
  font-weight: 800;
}

.project-form input {
  min-height: 54px;
  border: 1px solid rgba(11, 31, 48, 0.12);
  border-radius: 8px;
  background: #f7fbfd;
  padding: 0 18px;
  font: inherit;
}

.project-form button {
  width: 190px;
  margin-top: 22px;
  background: var(--cyan);
  color: #061014;
}

.contact-panel {
  display: grid;
  gap: 24px;
}

.contact-panel > h2 {
  margin-bottom: -14px;
}

.contact-panel article {
  padding: 24px 28px;
}

.contact-panel article span {
  display: block;
  margin-bottom: 8px;
  color: #0874a8;
  font-size: 12px;
  font-weight: 800;
}

.buyer-fit {
  margin-top: 56px;
}

.rfq-strip {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  width: min(92vw, 1380px);
  margin: 70px auto 34px;
  padding: 22px 26px;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: #fff;
}

.rfq-strip span {
  justify-self: center;
  color: #aebdcc;
  font-size: 13px;
}

.rfq-strip a {
  min-width: 132px;
  min-height: 38px;
  background: var(--cyan);
  color: #061014;
}

.footer {
  padding: 0 4vw 28px;
  background: #050b12;
  color: #aebdcc;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(280px, 1.15fr) minmax(420px, 1.45fr) minmax(260px, 0.8fr);
  gap: 56px;
  width: min(92vw, 1380px);
  margin: 0 auto;
  padding: 58px 0 42px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: #fff;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.footer-logo img {
  width: 58px;
  height: 58px;
  object-fit: contain;
  background: #fff;
}

.footer-brand p,
.footer-contact p {
  max-width: 460px;
  margin: 22px 0 0;
  color: #9caebe;
  font-size: 14px;
}

.footer-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.footer-badges span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(23, 198, 211, 0.13);
  color: #70ead9;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer-links strong,
.footer-contact strong {
  display: block;
  margin-bottom: 18px;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-links a {
  display: block;
  margin-top: 11px;
  color: #aebdcc;
  font-size: 14px;
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-links a:hover {
  color: var(--cyan);
  transform: translateX(3px);
}


.footer-contact {
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
}

.footer-contact a {
  min-width: 132px;
  margin-top: 24px;
  background: var(--cyan);
  color: #061014;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  width: min(92vw, 1380px);
  margin: 0 auto;
  padding-top: 22px;
  color: #768797;
  font-size: 12px;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  filter: blur(7px);
  transition: opacity 0.78s ease, transform 0.78s cubic-bezier(0.2, 0.8, 0.2, 1), filter 0.78s ease;
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
    filter: none;
  }
}

@media (max-width: 1100px) {
  .site-header {
    left: 12px;
    right: 12px;
    top: 12px;
    grid-template-columns: 1fr auto;
    gap: 14px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
  }

  .nav {
    display: none;
  }

  .page-hero,
  .page-hero.is-dark,
  .content-grid.three,
  .content-grid.two,
  .content-grid.four,
  .step-grid,
  .pill-grid,
  .rfq-layout,
  .rfq-strip {
    grid-template-columns: 1fr;
  }

  .page-hero,
  .page-hero.is-dark {
    padding-top: 96px;
  }

  .page-hero.is-dark .page-hero-copy,
  .page-hero.is-dark .page-hero-media,
  .page-hero.is-dark .page-hero-media img {
    min-height: auto;
  }

  .route-table article {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 22px 24px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .rfq-strip {
    text-align: center;
  }
}

@media (max-width: 700px) {
  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 32px;
  }

  .page-hero {
    gap: 28px;
    padding: 100px 24px 52px;
  }

  .page-hero.is-dark {
    padding: 86px 0 0;
  }

  .page-hero.is-dark .page-hero-copy {
    padding: 46px 24px 38px;
  }

  .section {
    padding: 72px 20px;
  }

  .content-card img {
    height: 200px;
  }

  .footer {
    padding-inline: 0;
  }

  .footer-inner,
  .footer-bottom {
    width: calc(100% - 40px);
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}
/* post content + card links */
a.content-card { display: block; }
a.content-card:hover { transform: translateY(-7px); border-color: rgba(23,198,211,0.34); box-shadow: var(--shadow-lift); }
.post-content-section { background: #fff; }
.post-body h3 { color: var(--ink); font-size: 22px; margin: 32px 0 12px; }
.post-body ul, .post-body ol { margin: 16px 0; padding-left: 24px; }
.post-body li { margin-bottom: 8px; }
.post-body p { margin-bottom: 18px; }

/* ============ OEM/ODM NEW COMPONENTS ============ */

.steps-circle-section { background: #fff; }
.steps-circle-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 60px 80px; width: min(92vw, 1200px); margin: 0 auto; padding: 20px 0 60px;
}
.steps-circle-grid article { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.step-circle {
  width: 64px; height: 64px; border: 3px solid var(--cyan); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-tech); font-size: 20px; font-weight: 800; color: var(--cyan);
  background: #fff; flex-shrink: 0;
}

.dev-control-section { background: var(--bg); color: #fff; }
.dev-control-section h2 { color: #fff; }
.dev-control-section p { color: var(--muted); }
.dev-control-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px;
  width: min(92vw, 1380px); margin: 0 auto; padding: 20px 0 60px;
}
.dev-control-grid article {
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md); padding: 0; overflow: hidden;
}
.dc-bar { height: 5px; }
.dev-control-grid article h3 { padding: 24px 28px 0; color: #fff; }
.dev-control-grid article p { padding: 0 28px 28px; color: var(--muted); font-size: 14px; }

.buyer-input-section { background: #fff; }
.buyer-input-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px;
  width: min(92vw, 1200px); margin: 0 auto; padding: 20px 0 60px;
}
.buyer-input-grid article {
  border: 1px solid var(--line); border-radius: var(--radius-md);
  padding: 28px; background: #fff; min-height: 120px;
}
.bi-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-bottom: 12px; }
.buyer-input-grid h3 { color: var(--ink); font-size: 18px; margin-bottom: 6px; }
.buyer-input-grid p { color: var(--slate); font-size: 14px; margin: 0; }

.related-insights-section { background: #fff; }
.related-insights-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px;
  width: min(92vw, 1200px); margin: 0 auto; padding: 20px 0 60px;
}
.related-insights-grid article {
  border: 1px solid var(--line); border-radius: var(--radius-md); padding: 28px; background: #fff;
}
.ri-tag {
  display: inline-block; padding: 4px 12px; background: #e6faf8; color: var(--cyan-strong);
  font-family: var(--font-tech); font-size: 11px; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; border-radius: 999px; margin-bottom: 12px;
}

.hero-btns { display: flex; gap: 16px; margin-top: 28px; }
.hero-btns .btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 50px; padding: 0 28px; border-radius: var(--radius-sm);
  font-family: var(--font-display); font-size: 15px; font-weight: 700; text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}
.hero-btns .btn:hover { transform: translateY(-2px); }
.btn.primary { background: var(--ink); color: #fff; border: none; box-shadow: 0 12px 28px rgba(7,16,28,0.18); }
.btn.secondary { background: #fff; color: var(--ink); border: 1px solid var(--line); box-shadow: 0 8px 20px rgba(3,10,20,0.06); }

.hero-media-bar {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: rgba(7,16,28,0.85); padding: 12px 20px; backdrop-filter: blur(8px);
}
.hero-media-bar span { color: #fff; font-family: var(--font-tech); font-size: 12px; font-weight: 600; letter-spacing: 0.05em; }

@media (max-width: 1100px) {
  .dev-control-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps-circle-grid { gap: 40px 40px; }
}
@media (max-width: 860px) {
  .steps-circle-grid, .buyer-input-grid, .related-insights-grid { grid-template-columns: 1fr; }
}

/* ============ FACTORY & QUALITY NEW COMPONENTS ============ */

.exec-chain-section { background: #fff; }
.exec-chain-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 42px 40px; width: min(92vw, 1380px); margin: 0 auto; padding: 20px 0 60px;
}
.exec-chain-grid article {
  border: 1px solid var(--line); border-radius: var(--radius-md);
  background: #fff; overflow: hidden;
}
.exec-chain-grid img {
  width: 100%; height: 240px; object-fit: cover; display: block;
}
.ec-bar { height: 6px; width: 80px; margin: 0 28px; }
.exec-chain-grid h3 { padding: 20px 28px 0; color: var(--ink); }
.exec-chain-grid p { padding: 0 28px 28px; color: var(--slate); font-size: 14px; }

.quality-gates-section { background: var(--bg); color: #fff; }
.quality-gates-section h2 { color: #fff; }
.quality-gates-section p { color: var(--muted); }
.quality-gates-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 60px;
  width: min(92vw, 1380px); margin: 0 auto; padding: 20px 0 60px;
}
.quality-gates-grid article {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 24px; background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-sm);
}
.quality-gates-grid strong {
  font-family: var(--font-display); font-size: 36px; color: #d8bc7c;
  line-height: 1; flex-shrink: 0;
}
.quality-gates-grid h3 { color: #fff; font-size: 16px; margin-bottom: 4px; }
.quality-gates-grid p { color: var(--muted); font-size: 13px; margin: 0; }

.proof-message-section { background: #fff; }
.proof-message-section .section-head.narrow { max-width: 780px; }

.verification-section { background: #fff; }
.verification-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px;
  width: min(92vw, 1380px); margin: 0 auto; padding: 20px 0 60px;
}
.verification-grid article {
  border: 1px solid var(--line); border-radius: var(--radius-md);
  padding: 28px; background: #fff;
}
.v-tag {
  display: inline-block; padding: 4px 12px; background: #e6faf8; color: var(--cyan-strong);
  font-family: var(--font-tech); font-size: 11px; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; border-radius: 999px; margin-bottom: 12px;
}

@media (max-width: 1100px) {
  .quality-gates-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .exec-chain-grid, .verification-grid { grid-template-columns: 1fr; }
}

/* ===== MOBILE NAV (sub-pages) ===== */
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: 0.3s; }

@media (max-width: 860px) {
  .mobile-toggle { display: block; z-index: 30; }
  .site-header { grid-template-columns: 1fr auto; left: 12px; right: 12px; top: 12px; padding: 10px 12px; }
  .site-header .brand { min-width: 0; gap: 8px; }
  .site-header .brand strong { font-size: 18px; }
  .site-header .brand em { display: none; }
  .site-header .brand-mark { width: 44px; height: 44px; }
  .nav, .header-cta { display: none; }
  .nav.is-open {
    display: flex; flex-direction: column; position: fixed; top: 72px; left: 12px; right: 12px;
    background: #fff; border-radius: var(--radius-md); padding: 16px 20px;
    box-shadow: 0 24px 64px rgba(3,10,20,0.18); z-index: 25; gap: 0;
  }
  .nav.is-open a { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }

  .page-hero, .page-hero.is-dark { grid-template-columns: 1fr; min-height: auto; padding: 100px 4vw 40px; }
  .page-hero.is-dark { padding: 90px 4vw 40px; }
  .page-hero.is-dark .page-hero-copy { min-height: auto; padding: 32px 4vw; }
  .page-hero.is-dark .page-hero-media { min-height: 240px; }
  .page-hero-media img { min-height: 220px; }
  .page-hero-copy h1 { font-size: clamp(28px, 7vw, 42px); }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; }

  .content-grid.three, .content-grid.four, .content-grid.two,
  .step-grid, .steps-circle-grid, .dev-control-grid,
  .buyer-input-grid, .related-insights-grid, .exec-chain-grid,
  .quality-gates-grid, .verification-grid, .pill-grid, .route-table {
    grid-template-columns: 1fr !important;
    gap: 20px;
  }

  .section { padding: 50px 4vw; }
  .section-head h2 { font-size: clamp(24px, 5vw, 34px); }
  .rfq-layout { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}