/* ==========================================================================
   Fuyuan Electronic Co.,Ltd. — single-page site
   Static CSS · system font stack · no external requests
   ========================================================================== */

:root {
  --ink: #0b1012;
  --ink-2: #15201f;
  --paper: #f4f1e9;
  --paper-2: #eae4d7;
  --surface: #ffffff;
  --text: #12181a;
  --muted: #5b6668;
  --line: #ddd5c5;
  --line-2: #c8bfab;
  --accent: #b85c2e;
  --accent-2: #e0b37a;
  --wrap: 1180px;
  --gutter: 34px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, p, ul, ol, table, figure, figcaption { margin: 0; }
ul, ol { padding: 0; list-style: none; }
table { border-collapse: collapse; width: 100%; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
svg { display: block; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -60px; left: 16px;
  z-index: 100;
  background: var(--paper);
  color: var(--ink);
  padding: 10px 16px;
  font-size: 13px;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--ink);
  border-bottom: 1px solid rgba(255, 255, 255, .09);
  transition: box-shadow .3s var(--ease), background .3s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(11, 16, 18, .95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 14px 34px -26px rgba(0, 0, 0, .9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  height: 70px;
}

.brand { display: flex; align-items: center; gap: 15px; }

.brand-logo { display: block; width: 142px; height: auto; }

.brand-sub {
  max-width: 132px;
  padding-left: 14px;
  border-left: 1px solid rgba(255, 255, 255, .16);
  font-size: 9px;
  line-height: 1.55;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .45);
}

.nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }

.nav a {
  position: relative;
  font-size: 13px;
  color: rgba(255, 255, 255, .72);
  padding: 4px 0;
  transition: color .2s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: var(--accent-2);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s var(--ease);
}
.nav a:hover { color: #fff; }
.nav a:hover::after,
.nav a.is-active::after { transform: scaleX(1); }
.nav a.is-active { color: #fff; }

.header-cta {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  background: var(--paper);
  color: var(--ink);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .02em;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.header-cta:hover { background: var(--accent-2); color: var(--ink); }

.nav-toggle {
  display: none;
  border: 1px solid rgba(255, 255, 255, .28);
  background: transparent;
  color: #fff;
  font: inherit;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 9px 14px;
  cursor: pointer;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 46% 54%;
  background: var(--ink);
  color: #fff;
  min-height: 664px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 72px 52px 72px max(34px, calc((100vw - var(--wrap)) / 2));
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .19em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow-rule { width: 24px; height: 1px; background: currentColor; flex: none; }
.eyebrow-light { color: var(--accent-2); }

h1 {
  margin-top: 22px;
  font-size: clamp(1.95rem, 3.15vw, 2.9rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.03em;
  text-wrap: balance;
}

.h1-line2 {
  display: block;
  color: var(--accent-2);
  font-weight: 600;
  font-size: .78em;
  letter-spacing: -.02em;
}

.definition {
  margin-top: 24px;
  max-width: 52ch;
  padding-left: 18px;
  border-left: 2px solid var(--accent);
  font-size: 16.5px;
  line-height: 1.62;
  color: rgba(255, 255, 255, .76);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .03em;
  border: 1px solid transparent;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.btn-solid { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn-solid:hover { background: var(--accent-2); border-color: var(--accent-2); }

.btn-ghost { border-color: rgba(255, 255, 255, .3); color: #fff; }
.btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, .08); }

.hero-note {
  margin-top: 26px;
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .42);
}

.hero-media { position: relative; overflow: hidden; background: #1a2224; }

.hero-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 30%;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 16, 18, .9) 0%, rgba(11, 16, 18, .28) 26%, rgba(11, 16, 18, 0) 55%);
  pointer-events: none;
}

/* Key facts card */

.facts-card {
  position: absolute;
  right: 34px;
  bottom: 34px;
  z-index: 3;
  width: 372px;
  background: #fffdf8;
  border-top: 3px solid var(--accent);
  padding: 0 22px 4px;
  box-shadow: 0 40px 70px -34px rgba(0, 0, 0, .85);
}

.facts-title {
  padding: 17px 0 12px;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.facts-table th,
.facts-table td {
  padding: 9px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.45;
}

.facts-table thead th {
  padding: 8px 0;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .17em;
  text-transform: uppercase;
  color: #8b9497;
}

.facts-table tbody th {
  width: 38%;
  font-weight: 500;
  color: var(--muted);
  padding-right: 10px;
}

.facts-table tbody td {
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.facts-table tbody tr:last-child th,
.facts-table tbody tr:last-child td { border-bottom: 0; }

/* ==========================================================================
   Metrics
   ========================================================================== */

.metrics {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 30px 0;
}

.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.metric {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 20px;
  border-left: 1px solid var(--line-2);
}
.metric:first-child { padding-left: 0; border-left: 0; }

.metric-value {
  font-size: clamp(1.4rem, 2.1vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -.025em;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.metric-label {
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.4;
}

/* ==========================================================================
   Generic sections
   ========================================================================== */

.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 70px;
}

.section-alt { background: var(--surface); }

.section-head { max-width: 720px; margin-bottom: 40px; }

.h2 {
  margin-top: 16px;
  font-size: clamp(1.6rem, 2.7vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -.028em;
  line-height: 1.14;
}

.section-intro {
  margin-top: 16px;
  font-size: 15.5px;
  line-height: 1.68;
  color: var(--muted);
  max-width: 66ch;
}

/* ==========================================================================
   Products
   ========================================================================== */

.power-note {
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  border: 1px solid var(--line-2);
  background: var(--surface);
}

.power-note-block { display: flex; flex-direction: column; gap: 4px; padding: 20px 26px; }

.power-note-block--aux {
  border-left: 1px solid var(--line);
  background: var(--paper-2);
}

.pn-label {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.pn-value {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}

.power-note-block--aux .pn-value { font-size: 14.5px; font-weight: 500; color: var(--muted); }

.product-line {
  display: grid;
  grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr);
  gap: 54px;
  align-items: start;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}
.product-line:first-of-type { border-top: 1px solid var(--line); margin-top: 40px; }

.product-line--reverse { grid-template-columns: minmax(0, 1.14fr) minmax(0, .86fr); }
.product-line--reverse .line-media { order: 2; }

.line-media {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 14px;
}

.line-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.line-num {
  display: block;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.line-body h2 {
  margin-top: 10px;
  font-size: clamp(1.45rem, 2.4vw, 1.95rem);
  font-weight: 700;
  letter-spacing: -.024em;
  line-height: 1.18;
}

.line-lede {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.62;
  color: var(--muted);
  max-width: 46ch;
}

.spec-table,
.cert-table { margin-top: 22px; border: 1px solid var(--line-2); background: var(--surface); }

.spec-table th,
.spec-table td,
.cert-table th,
.cert-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.55;
}

.spec-table thead th,
.cert-table thead th {
  background: var(--paper-2);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line-2);
  padding: 10px 16px;
}

.spec-table tbody th,
.cert-table tbody th { font-weight: 600; color: var(--text); background: rgba(234, 228, 215, .4); }
.spec-table tbody th { width: 34%; }
.cert-table tbody th { width: 38%; }

.spec-table tbody td,
.cert-table tbody td { color: var(--muted); }

.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td,
.cert-table tbody tr:last-child th,
.cert-table tbody tr:last-child td { border-bottom: 0; }

.spec-table tbody tr:hover th,
.spec-table tbody tr:hover td { background: rgba(184, 92, 46, .045); }

/* gallery */

.gallery { margin-top: 56px; }

.gallery-label {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }

.shot { background: var(--surface); border: 1px solid var(--line); padding: 12px; }

.shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.shot figcaption {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* applications */

.applications { margin-top: 52px; padding-top: 32px; border-top: 1px solid var(--line); }

.apps-label {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }

.chips li {
  padding: 7px 14px;
  border: 1px solid var(--line-2);
  background: var(--surface);
  font-size: 12.5px;
  color: var(--muted);
}

/* ==========================================================================
   Factory (dark)
   ========================================================================== */

.section-dark {
  background: var(--ink);
  color: #eae6dc;
  border-bottom: 1px solid #22302f;
}

.h2-light { color: #fff; }

.section-head--split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 48px;
  align-items: end;
  max-width: none;
}

.head-side {
  font-size: 14px;
  line-height: 1.65;
  color: rgba(234, 230, 220, .58);
  max-width: 42ch;
  padding-bottom: 4px;
}

.definition-light {
  margin-top: 26px;
  max-width: 76ch;
  color: rgba(234, 230, 220, .85);
  font-size: clamp(1rem, 1.55vw, 1.18rem);
  line-height: 1.62;
}

.spec-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 56px;
  margin-top: 34px;
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid rgba(234, 230, 220, .16);
}

.sl-key {
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(234, 230, 220, .5);
  white-space: nowrap;
}

.sl-val { font-size: 14px; font-weight: 500; color: #fff; text-align: right; font-variant-numeric: tabular-nums; }

.factory-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 44px;
}

.section-dark .shot { background: #131c1e; border-color: rgba(255, 255, 255, .12); }

.section-dark .shot img { aspect-ratio: 3 / 2; object-fit: cover; mix-blend-mode: normal; }

.section-dark .shot figcaption {
  border-top-color: rgba(255, 255, 255, .12);
  color: rgba(234, 230, 220, .55);
}

/* ==========================================================================
   Certifications
   ========================================================================== */

.cert-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.44fr) minmax(0, .56fr);
  gap: 32px;
  align-items: start;
}

.cert-table { margin-top: 0; }

.cert-side {
  border: 1px solid var(--line-2);
  border-top: 3px solid var(--accent);
  background: var(--paper);
  padding: 20px 22px 22px;
}

.cert-side-label {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.cert-side-list { margin-top: 12px; }

.cert-side-list li {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
}

.cert-side-list li span { font-size: 10.5px; letter-spacing: .04em; color: var(--muted); }
.cert-side-list li strong { font-size: 13.5px; font-weight: 600; color: var(--text); }

/* ==========================================================================
   OEM / ODM
   ========================================================================== */

.process-grid {
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
  gap: 60px;
  align-items: start;
}

.process-fact {
  position: sticky;
  top: 100px;
  border: 1px solid var(--line-2);
  border-left: 3px solid var(--accent);
  background: var(--surface);
  padding: 24px 24px 26px;
}

.pf-num {
  display: block;
  font-size: clamp(2.4rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -.045em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.pf-unit {
  margin-left: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

.pf-text { margin-top: 10px; font-size: 14.5px; color: var(--muted); }

.pf-note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.process-list { counter-reset: step; }

.process-list li {
  position: relative;
  padding: 0 0 28px 60px;
  border-left: 1px solid var(--line);
  margin-left: 16px;
}

.process-list li:last-child { padding-bottom: 0; border-left-color: transparent; }

.process-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: -17px;
  top: -2px;
  width: 33px;
  height: 33px;
  display: grid;
  place-items: center;
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.pl-step {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
}

.process-list h3 { margin-top: 5px; font-size: 16.5px; font-weight: 650; letter-spacing: -.012em; }

.process-list p {
  margin-top: 6px;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq-list { border-top: 1px solid var(--line-2); }

.faq-item {
  display: grid;
  grid-template-columns: minmax(0, .4fr) minmax(0, .6fr);
  gap: 44px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.faq-item h3 { font-size: 15px; font-weight: 650; line-height: 1.5; letter-spacing: -.008em; }
.faq-item p { font-size: 14.5px; line-height: 1.68; color: var(--muted); }

/* ==========================================================================
   Contact + footer
   ========================================================================== */

.contact {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #f3f0e8;
  padding: 100px 0 104px;
  scroll-margin-top: 70px;
}

.contact::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("img/factory-line.jpg");
  background-size: cover;
  background-position: 50% 45%;
  opacity: .3;
  transform: scale(1.02);
}

.contact::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 16, 18, .96) 0%, rgba(11, 16, 18, .78) 55%, rgba(11, 16, 18, .55) 100%);
}

.contact-inner { position: relative; z-index: 2; max-width: 860px; }

.contact-name {
  margin-top: 18px;
  font-size: clamp(1.7rem, 3.5vw, 2.65rem);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.12;
  color: #fff;
}

.contact-action {
  margin-top: 18px;
  max-width: 44ch;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.6;
  color: rgba(243, 240, 232, .82);
}

.contact-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid rgba(243, 240, 232, .22);
  font-size: 13.5px;
  color: rgba(243, 240, 232, .68);
}

.contact-meta a {
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, .45);
  padding-bottom: 1px;
  transition: border-color .2s var(--ease);
}
.contact-meta a:hover { border-color: #fff; }

.meta-sep { color: rgba(243, 240, 232, .38); }

.site-footer { background: #05090a; color: rgba(234, 230, 220, .55); padding: 32px 0 26px; }

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 18px 30px;
  font-size: 11.5px;
}

.footer-logo {
  display: block;
  width: 142px;
  height: auto;
  margin-bottom: 16px;
}

.footer-copy { color: rgba(234, 230, 220, .8); }

.footer-main { display: flex; flex-direction: column; gap: 4px; }

.footer-links { display: flex; align-items: center; gap: 18px; }

.footer-links a {
  color: rgba(234, 230, 220, .62);
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(255, 255, 255, .2);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.footer-links a:hover { color: #fff; border-color: rgba(255, 255, 255, .65); }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1080px) {
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-copy { padding: 56px var(--gutter) 44px; }
  .hero-media { min-height: 340px; overflow: visible; }
  .hero-media img { position: static; height: 340px; }
  .hero-media::after { background: linear-gradient(180deg, rgba(11, 16, 18, .55) 0%, rgba(11, 16, 18, 0) 45%); }
  .facts-card { position: relative; right: auto; bottom: auto; z-index: 2; width: auto; margin: -46px var(--gutter) 0; box-shadow: 0 24px 50px -30px rgba(0, 0, 0, .6); }

  .section-head--split { grid-template-columns: 1fr; gap: 18px; align-items: start; }
  .head-side { max-width: 60ch; }
  .product-line,
  .process-grid { gap: 36px; }
  .cert-wrap { gap: 24px; }
}

@media (max-width: 920px) {
  :root { --gutter: 26px; }

  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav.is-open {
    position: fixed;
    top: 70px; left: 0; right: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px var(--gutter) 16px;
    background: var(--ink);
    border-bottom: 1px solid rgba(255, 255, 255, .12);
    box-shadow: 0 30px 40px -30px rgba(0, 0, 0, .9);
  }
  .nav.is-open a { padding: 13px 0; font-size: 15px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
  .nav.is-open a::after { display: none; }
  .header-cta { display: none; }

  .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .metric:nth-child(3) { padding-left: 0; border-left: 0; }

  .section { padding: 66px 0; }

  .product-line { grid-template-columns: 1fr; gap: 22px; padding: 36px 0; }
  .product-line--reverse .line-media { order: 0; }
  .line-media { padding: 10px; }
  .line-media img { aspect-ratio: 4 / 3; }

  .gallery-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .factory-strip { grid-template-columns: 1fr; }
  .cert-wrap { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .process-fact { position: static; }
  .spec-list { grid-template-columns: 1fr; gap: 0; }
  .faq-item { grid-template-columns: 1fr; gap: 8px; padding: 22px 0; }
  .power-note { grid-template-columns: 1fr; }
  .power-note-block--aux { border-left: 0; border-top: 1px solid var(--line); }
}

@media (max-width: 620px) {
  .brand-sub { display: none; }
  .brand-logo { width: 122px; }
  h1 { font-size: clamp(1.75rem, 8vw, 2.2rem); }
  .definition { font-size: 15px; padding-left: 14px; }
  .hero-actions .btn { width: 100%; }
  .hero-media { min-height: 260px; overflow: visible; }
  .hero-media img { height: 260px; }
  .facts-card { margin: -34px 16px 0; padding: 0 16px 4px; }
  .facts-table th, .facts-table td { font-size: 12px; padding: 8px 0; }
  .section { padding: 54px 0; }
  .spec-table th, .spec-table td, .cert-table th, .cert-table td { padding: 10px 12px; font-size: 13px; }
  .spec-table tbody th, .cert-table tbody th { width: 42%; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .shot figcaption { font-size: 9px; letter-spacing: .1em; }
  .spec-list li { flex-direction: column; gap: 3px; }
  .sl-val { text-align: left; }
  .contact { padding: 64px 0 68px; }
  .contact-meta { flex-direction: column; align-items: flex-start; gap: 9px; }
  .meta-sep { display: none; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-links { margin-top: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}