:root {
  --ink: #081118;
  --ink-2: #0b2a3a;
  --muted: #617280;
  --line: #dbe5e8;
  --paper: #f4f7f8;
  --white: #fff;
  --brand: #f5b45c;
  --brand-dark: #c77518;
  --brand-deep: #8f4b07;
  --teal: #0f5a6b;
  --green: #227052;
  --radius: 24px;
  --shadow: 0 24px 70px rgba(8, 17, 24, .12);
  --shadow-strong: 0 36px 100px rgba(8, 17, 24, .22);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(245,180,92,.11), transparent 34rem),
    linear-gradient(180deg, #fff, #f7fafb 58%, #fff);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
.container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.narrow { width: min(800px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 1000; background: var(--white); padding: 12px 16px; }
.skip-link:focus { top: 12px; }

.eyebrow {
  margin: 0 0 14px;
  color: var(--brand-dark);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .15em;
  text-transform: uppercase;
}
h1, h2, h3, h4 { margin: 0 0 16px; line-height: 1.15; letter-spacing: -.035em; }
h1 { font-size: clamp(2.55rem, 6vw, 5.2rem); }
h2 { font-size: clamp(2rem, 4vw, 3.35rem); }
h3 { font-size: 1.35rem; letter-spacing: -.02em; }
p { margin: 0 0 18px; }
.lead { color: #42515f; font-size: clamp(1.08rem, 2vw, 1.28rem); line-height: 1.7; }
.text-muted { color: var(--muted); }
.text-light { color: rgba(255,255,255,.78); }
.accent { color: var(--brand); }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-alt { background: var(--paper); }
.section-dark { color: var(--white); background: var(--ink); }
.section-head { max-width: 720px; margin-bottom: 42px; }
.center { text-align: center; margin-inline: auto; }
.grid-2, .grid-3, .grid-4 { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.align-center { align-items: center; }
.media-frame {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}
.media-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.media-frame.wide img { aspect-ratio: 16 / 9; }
.media-frame.team img { aspect-ratio: 4 / 3; object-position: center 22%; }
.media-frame.product-feature img { aspect-ratio: 1.3 / 1; object-fit: cover; }
.media-frame figcaption {
  padding: 14px 18px;
  color: var(--muted);
  background: var(--white);
  font-size: .78rem;
}
.evidence-panel {
  padding: 28px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}
.evidence-panel .media-frame { box-shadow: none; }

.topbar { padding: 9px 0; color: #d5dde3; background: linear-gradient(90deg, #050b10, #0b2a3a); font-size: .82rem; }
.topbar-inner { display: flex; justify-content: space-between; gap: 24px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.88);
  border-bottom: 1px solid rgba(11,42,58,.1);
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 34px rgba(8,17,24,.06);
}
.navbar { min-height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 850; font-size: 1.13rem; letter-spacing: -.03em; }
.brand-logo img { width: clamp(190px, 21vw, 258px); height: auto; }
.footer-logo img { filter: brightness(0) invert(1) drop-shadow(0 12px 20px rgba(0,0,0,.24)); }
.brand-logo {
  gap: 12px;
}
.inline-logo-mark {
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  display: inline-grid;
  place-items: center;
}
.inline-logo-mark svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}
.inline-logo-mark circle {
  fill: #0b2a3a;
  stroke: #d9902f;
  stroke-width: 5;
}
.inline-logo-mark path {
  fill: none;
  stroke: #fff;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.inline-logo-mark path:nth-of-type(4) {
  stroke: #f5b45c;
  stroke-width: 6;
}
.inline-logo-text {
  display: grid;
  line-height: 1;
}
.inline-logo-text strong {
  color: #0b2a3a;
  font-size: clamp(1rem, 1.55vw, 1.3rem);
  font-weight: 950;
  letter-spacing: -.045em;
}
.inline-logo-text em {
  margin-top: 3px;
  color: #c77518;
  font-size: clamp(.92rem, 1.35vw, 1.16rem);
  font-style: normal;
  font-weight: 950;
  letter-spacing: .08em;
}
.inline-logo-text small {
  margin-top: 5px;
  color: #617280;
  font-size: .55rem;
  font-weight: 850;
  letter-spacing: .14em;
}
.footer-logo .inline-logo-text strong { color: #0b2a3a; }
.footer-logo .inline-logo-text small { color: #617280; }
.brand-mark { width: 34px; height: 34px; border: 8px solid var(--ink); border-radius: 50%; position: relative; }
.brand-mark::after { content: ""; position: absolute; width: 8px; height: 8px; inset: 5px; border-radius: 50%; background: var(--brand); }
.nav-links { display: flex; align-items: center; gap: 8px; font-size: .9rem; font-weight: 760; }
.nav-links a:not(.nav-cta) { padding: 10px 13px; border-radius: 999px; color: #243540; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); background: #eef4f6; }
.nav-cta, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 49px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--white);
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  font-weight: 750;
  cursor: pointer;
  transition: .2s ease;
}
.btn:hover, .nav-cta:hover { transform: translateY(-2px); background: #9e5104; box-shadow: 0 16px 34px rgba(199,117,24,.28); }
.btn-light { color: var(--ink); background: var(--white); }
.btn-light:hover { color: var(--white); background: var(--brand-dark); }
.btn-outline { color: var(--ink); background: transparent; border-color: #aeb8c0; }
.btn-outline:hover { color: var(--white); border-color: var(--ink); background: var(--ink); }
.btn-group { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--paper); font-size: 1.35rem; }

.hero {
  position: relative;
  min-height: 700px;
  display: flex;
  align-items: center;
  color: var(--white);
  background:
    radial-gradient(circle at 70% 20%, rgba(245,180,92,.28), transparent 26rem),
    linear-gradient(90deg, rgba(5,11,16,.98) 0%, rgba(8,17,24,.82) 48%, rgba(8,17,24,.22) 82%),
    url("../images/approved/vietnam-tire-factory-1280.jpg") center/cover;
  overflow: hidden;
}
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 190px; background: linear-gradient(transparent, rgba(7,12,16,.58)); }
.hero-content { position: relative; z-index: 2; max-width: 760px; padding: 96px 0; }
.hero h1 { max-width: 760px; }
.hero .lead { max-width: 650px; color: rgba(255,255,255,.8); }
.hero-points { display: flex; flex-wrap: wrap; gap: 12px 24px; padding: 0; margin: 26px 0 0; list-style: none; font-size: .9rem; font-weight: 700; }
.hero-points li::before { content: "✓"; color: var(--brand); margin-right: 8px; }
.page-hero { padding: 112px 0 86px; color: var(--white); background: radial-gradient(circle at 82% 2%, rgba(245,180,92,.34), transparent 23rem), linear-gradient(135deg, #061016, #0b2a3a 55%, #081118); }
.page-hero h1 { max-width: 900px; font-size: clamp(2.5rem, 5vw, 4.6rem); }
.page-hero .lead { max-width: 760px; color: rgba(255,255,255,.76); }
.breadcrumbs { margin-bottom: 28px; color: rgba(255,255,255,.56); font-size: .83rem; }
.breadcrumbs a:hover { color: var(--brand); }

.stat-strip { position: relative; z-index: 3; margin-top: -46px; }
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.stat { padding: 30px 28px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat strong { display: block; margin-bottom: 2px; font-size: 1.75rem; letter-spacing: -.04em; }
.stat span { color: var(--muted); font-size: .85rem; }

.card {
  height: 100%;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition: .25s ease;
}
.card:hover { transform: translateY(-5px); border-color: #bdc6cc; box-shadow: var(--shadow); }
.card-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  border-radius: 14px;
  color: var(--brand-dark);
  background: #fff2df;
  font-size: 1.45rem;
}
.card-link { display: inline-flex; margin-top: 8px; color: var(--brand-dark); font-weight: 750; }
.card-link::after { content: "→"; margin-left: 8px; transition: .2s; }
.card-link:hover::after { transform: translateX(4px); }
.product-card { position: relative; overflow: hidden; }
.product-card::before { content: ""; position: absolute; width: 150px; height: 150px; right: -65px; top: -65px; border: 28px solid var(--paper); border-radius: 50%; }
.product-card > * { position: relative; z-index: 1; }
.badge { display: inline-block; padding: 5px 10px; border-radius: 999px; color: #79500d; background: #fff2cf; font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }

.feature-list, .check-list { padding: 0; margin: 24px 0; list-style: none; }
.feature-list li, .check-list li { position: relative; padding: 10px 0 10px 30px; border-bottom: 1px solid var(--line); }
.feature-list li::before, .check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 900; }
.feature-list li:last-child, .check-list li:last-child { border-bottom: 0; }
.process { counter-reset: steps; }
.process-step { position: relative; padding-left: 76px; }
.process-step::before {
  counter-increment: steps;
  content: counter(steps, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  color: var(--brand);
  font-size: 1.7rem;
  font-weight: 850;
  letter-spacing: -.05em;
}
.callout { padding: 32px; border-left: 4px solid var(--brand); border-radius: 0 var(--radius) var(--radius) 0; background: #fff6e9; }
.callout-dark { color: var(--white); background: var(--ink-2); }
.trust-row { display: flex; flex-wrap: wrap; gap: 12px; }
.trust-pill { padding: 9px 14px; border: 1px solid var(--line); border-radius: 999px; font-size: .8rem; font-weight: 750; background: var(--white); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.gallery-grid .media-frame img { aspect-ratio: 4 / 3; }
.oem-panel {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 44px;
  padding: 46px;
  border: 1px solid #eccb9f;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #fffaf2, #fff);
  box-shadow: var(--shadow);
}
.related-links { display: flex; flex-wrap: wrap; gap: 12px; }
.related-links a {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-width: 180px;
  padding: 14px 18px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 10px;
  color: var(--white);
  font-weight: 750;
}
.related-links a:hover { border-color: var(--brand); color: var(--brand); }
.highlight-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; border-radius: var(--radius); background: #dce2e6; }
.highlight-item { padding: 28px; background: var(--white); }
.highlight-item strong { display: block; font-size: 1.35rem; }
.highlight-item span { color: var(--muted); font-size: .84rem; }
.buyer-card { position: relative; padding-top: 66px; }
.buyer-card::before { content: attr(data-number); position: absolute; top: 22px; left: 30px; color: var(--brand); font-weight: 850; letter-spacing: .08em; }
.dashboard {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.dashboard-card { padding: 24px; border-radius: 14px; background: #1a2630; }
.dashboard-card strong { display: block; margin-bottom: 4px; color: var(--brand); font-size: 1.45rem; }
.dashboard-card span { color: rgba(255,255,255,.7); font-size: .82rem; }
.verification-state { color: #ffd69c !important; font-size: 1rem !important; }

.table-wrap { width: 100%; overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
table { width: 100%; border-collapse: collapse; min-width: 760px; background: var(--white); }
th, td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: #3d4a55; background: var(--paper); font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; }
td { font-size: .92rem; }
tr:last-child td { border-bottom: 0; }
.spec-note { margin-top: 12px; color: var(--muted); font-size: .8rem; }

.market-card strong { display: block; font-size: 2.25rem; letter-spacing: -.05em; }
.timeline { position: relative; padding-left: 32px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 2px; background: var(--line); }
.timeline-item { position: relative; margin-bottom: 32px; }
.timeline-item::before { content: ""; position: absolute; left: -32px; top: 7px; width: 14px; height: 14px; border: 3px solid var(--white); border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 1px var(--brand); }

.quote-band { padding: 72px 0; color: var(--white); background: var(--brand-dark); }
.quote-band-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.quote-band h2 { max-width: 680px; margin-bottom: 8px; }
.quote-band p { margin: 0; color: rgba(255,255,255,.76); }

.faq-item { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; padding: 24px 44px 24px 0; position: relative; text-align: left; border: 0; color: var(--ink); background: transparent; font-weight: 780; cursor: pointer; }
.faq-question::after { content: "+"; position: absolute; right: 4px; top: 20px; font-size: 1.5rem; color: var(--brand-dark); }
.faq-question[aria-expanded="true"]::after { content: "–"; }
.faq-answer { display: none; padding: 0 36px 24px 0; color: var(--muted); }
.faq-answer.open { display: block; }

.review { position: relative; }
.review::before { content: "“"; position: absolute; top: 12px; right: 24px; color: #e7ebee; font-family: Georgia, serif; font-size: 5rem; line-height: 1; }
.stars { margin-bottom: 12px; color: var(--brand); letter-spacing: .12em; }
.review-meta { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); font-size: .85rem; }
.review-meta strong { display: block; }

.form-card { padding: 38px; border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.field.full { grid-column: 1 / -1; }
label { display: block; margin-bottom: 7px; font-size: .82rem; font-weight: 760; }
input, select, textarea {
  width: 100%;
  min-height: 51px;
  padding: 12px 14px;
  border: 1px solid #cbd3d9;
  border-radius: 9px;
  color: var(--ink);
  background: var(--white);
}
textarea { min-height: 130px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 3px solid rgba(232,138,25,.18); border-color: var(--brand); }
.form-note { margin-top: 16px; color: var(--muted); font-size: .78rem; }
.form-status { display: none; margin-top: 18px; padding: 14px; border-radius: 8px; color: #19593e; background: #e8f6ef; }

/* Premium brand refresh */
.section-dark {
  color: var(--white);
  background: radial-gradient(circle at 85% 8%, rgba(245,180,92,.22), transparent 22rem), linear-gradient(135deg, #050b10, #0b2a3a 54%, #081118);
}
.media-frame.visual-frame {
  background: linear-gradient(135deg, #061016, #0b2a3a);
  border-color: rgba(245,180,92,.28);
  box-shadow: var(--shadow-strong);
}
.media-frame.visual-frame img,
.category-visual {
  width: 100%;
  aspect-ratio: 900 / 620;
  object-fit: cover;
}
.stats {
  border: 1px solid rgba(11,42,58,.08);
}
.stat {
  background: linear-gradient(180deg, #fff, #fbfdfd);
}
.card {
  background: linear-gradient(180deg, #fff, #fbfdfd);
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(199,117,24,.36);
  box-shadow: var(--shadow);
}
.card-icon {
  color: var(--white);
  background: linear-gradient(135deg, var(--teal), var(--ink-2));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.16), 0 14px 28px rgba(11,42,58,.16);
}
.product-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.product-card::before {
  width: 170px;
  height: 170px;
  right: -72px;
  top: -72px;
  border-color: rgba(245,180,92,.16);
}
.product-card::after {
  content: "";
  position: absolute;
  inset: auto 24px 0;
  height: 3px;
  border-radius: 999px 999px 0 0;
  background: linear-gradient(90deg, var(--brand), transparent);
  opacity: .75;
}
.product-card .card-link {
  margin-top: auto;
}
.product-visual {
  overflow: hidden;
  margin: -30px -30px 24px;
  border-radius: var(--radius) var(--radius) 18px 18px;
  background: #07141c;
}
.product-visual img {
  width: 100%;
  aspect-ratio: 900 / 620;
  object-fit: cover;
  transition: transform .35s ease;
}
.product-card:hover .product-visual img {
  transform: scale(1.035);
}
.oem-panel {
  border-color: rgba(199,117,24,.26);
  background: radial-gradient(circle at 92% 18%, rgba(245,180,92,.24), transparent 18rem), linear-gradient(135deg, #fffaf2, #fff);
}
.highlight-item {
  background: linear-gradient(180deg, #fff, #f9fbfc);
}
.dashboard-card {
  background: linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.04));
  border: 1px solid rgba(255,255,255,.1);
}
.quote-band {
  padding: 78px 0;
  background: radial-gradient(circle at 88% 8%, rgba(245,180,92,.38), transparent 18rem), linear-gradient(135deg, #0b2a3a, #8f4b07);
}
.site-footer {
  background: linear-gradient(180deg, #091015, #05090d);
}
.footer-logo {
  display: inline-flex;
  padding: 10px 14px;
  border-radius: 18px;
  background: rgba(255,255,255,.94);
}
.footer-logo img {
  filter: none;
}
.page-hero,
.hero {
  isolation: isolate;
}
.page-hero::after,
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(90deg, #000, transparent 74%);
  z-index: 1;
}
.page-hero { position: relative; overflow: hidden; }
.page-hero .container { position: relative; z-index: 2; }

.article-content h2 {
  margin-top: 42px;
}
.article-content h2:first-child {
  margin-top: 0;
}
.article-content p {
  color: #42515f;
  font-size: 1.03rem;
}
.article-content .callout {
  margin-top: 42px;
}
.contact-details a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.site-footer strong {
  color: #fff;
}
.site-footer p {
  font-size: .92rem;
}

.contact-details { padding: 32px; border-radius: var(--radius); color: var(--white); background: var(--ink); }
.contact-item { padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.contact-item:last-child { border-bottom: 0; }
.contact-item small { display: block; color: rgba(255,255,255,.55); text-transform: uppercase; letter-spacing: .08em; }

.site-footer { padding: 70px 0 28px; color: #c0c9d0; background: #091015; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 50px; }
.site-footer h3 { color: var(--white); font-size: 1rem; letter-spacing: 0; }
.site-footer ul { padding: 0; margin: 0; list-style: none; }
.site-footer li { margin: 9px 0; }
.site-footer a:hover { color: var(--brand); }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; margin-top: 52px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.1); font-size: .78rem; }

@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid, .dashboard, .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .oem-panel { grid-template-columns: 1fr; }
  .menu-toggle { display: grid; place-items: center; }
  .nav-links {
    position: absolute;
    display: none;
    inset: 78px 20px auto;
    padding: 20px;
    align-items: stretch;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--white);
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-cta { width: 100%; }
}
@media (max-width: 720px) {
  .container, .narrow { width: min(100% - 28px, 1160px); }
  .topbar { display: none; }
  .section { padding: 72px 0; }
  .section-sm { padding: 50px 0; }
  .hero {
    min-height: 670px;
    background-image: linear-gradient(90deg, rgba(7,12,16,.97) 0%, rgba(7,12,16,.78) 66%, rgba(7,12,16,.34) 100%), url("../images/approved/vietnam-tire-factory-720.jpg");
    background-position: 61% center;
  }
  .hero-content { padding: 72px 0 100px; }
  .hero h1 { font-size: clamp(2.65rem, 13vw, 4rem); }
  .grid-2, .grid-3, .grid-4, .stats, .form-grid { grid-template-columns: 1fr; }
  .gallery-grid, .dashboard, .highlight-grid { grid-template-columns: 1fr; }
  .stats { border-radius: 14px; }
  .stat { padding: 20px 24px; border-right: 0; border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: 0; }
  .quote-band-inner { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { flex-direction: column; }
  .form-card { padding: 24px; }
  .oem-panel { padding: 26px; }
  .field.full { grid-column: auto; }
  .page-hero { padding: 82px 0 64px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}

/* UX upgrade: mega navigation, resource hubs, sticky CTAs */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(245,180,92,.55);
  outline-offset: 3px;
}

.nav-item { position: relative; }
.nav-trigger {
  min-height: 40px;
  padding: 10px 13px;
  border: 0;
  border-radius: 999px;
  color: #243540;
  background: transparent;
  font-weight: 760;
  cursor: pointer;
}
.nav-trigger::after {
  content: "▾";
  margin-left: 7px;
  color: var(--brand-dark);
  font-size: .72rem;
}
.nav-trigger:hover,
.nav-trigger[aria-expanded="true"] {
  color: var(--ink);
  background: #eef4f6;
}
.mega-menu {
  position: absolute;
  left: 50%;
  top: calc(100% + 18px);
  display: grid;
  grid-template-columns: 260px minmax(440px, 720px);
  gap: 24px;
  width: min(960px, calc(100vw - 40px));
  padding: 26px;
  border: 1px solid rgba(11,42,58,.12);
  border-radius: 24px;
  background: rgba(255,255,255,.98);
  box-shadow: var(--shadow-strong);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 10px);
  transition: .2s ease;
  z-index: 200;
}
.has-mega.open .mega-menu,
.has-mega:hover .mega-menu,
.has-mega:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}
.company-mega { width: min(760px, calc(100vw - 40px)); }
.mega-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.mega-card {
  display: block;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(180deg, #fff, #f9fcfc);
}
.mega-card strong {
  display: block;
  color: var(--ink);
  line-height: 1.25;
}
.mega-card span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.45;
}
.mega-card:hover {
  border-color: rgba(199,117,24,.35);
  box-shadow: 0 14px 32px rgba(8,17,24,.08);
}

.page-jump {
  position: sticky;
  top: 86px;
  z-index: 50;
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid rgba(11,42,58,.1);
  backdrop-filter: blur(14px);
}
.page-jump-inner {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 12px 0;
}
.page-jump a {
  flex: 0 0 auto;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #334653;
  background: #fff;
  font-size: .82rem;
  font-weight: 760;
}
.page-jump a:hover {
  color: var(--white);
  border-color: var(--brand-dark);
  background: var(--brand-dark);
}

.decision-panel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(199,117,24,.22);
  border-radius: var(--radius);
  background: #e7d3b5;
  box-shadow: var(--shadow);
}
.decision-panel .decision-item {
  padding: 24px;
  background: linear-gradient(180deg, #fffaf2, #fff);
}
.decision-item small {
  display: block;
  margin-bottom: 7px;
  color: var(--brand-deep);
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.decision-item strong {
  display: block;
  line-height: 1.25;
}

.resource-card {
  display: flex;
  flex-direction: column;
}
.resource-card .badge { align-self: flex-start; margin-bottom: 16px; }
.resource-card .card-link { margin-top: auto; }
.trust-panel {
  padding: 36px;
  border-radius: var(--radius);
  color: var(--white);
  background: radial-gradient(circle at 88% 10%, rgba(245,180,92,.32), transparent 18rem), linear-gradient(135deg, #061016, #0b2a3a);
  box-shadow: var(--shadow-strong);
}
.trust-panel .check-list li { border-color: rgba(255,255,255,.14); }
.table-hint {
  display: none;
  margin: 0 0 10px;
  color: var(--muted);
  font-size: .78rem;
}
.form-journey {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.form-journey ol {
  padding-left: 20px;
  margin: 0;
}
.form-journey li { margin: 8px 0; }
.mobile-quote-bar { display: none; }

@media (max-width: 980px) {
  .nav-links {
    max-height: calc(100vh - 110px);
    overflow-y: auto;
  }
  .nav-item { width: 100%; }
  .nav-trigger {
    width: 100%;
    justify-content: space-between;
    text-align: left;
    background: #f6f9fa;
  }
  .mega-menu {
    position: static;
    display: none;
    width: 100%;
    grid-template-columns: 1fr;
    margin-top: 10px;
    padding: 16px;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .has-mega.open .mega-menu { display: grid; }
  .has-mega:hover .mega-menu,
  .has-mega:focus-within .mega-menu { transform: none; }
  .mega-grid { grid-template-columns: 1fr; }
  .page-jump { top: 78px; }
  .decision-panel { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  body { padding-bottom: 72px; }
  .table-hint { display: block; }
  .page-jump { top: 0; }
  .page-jump-inner { padding: 10px 0; }
  .decision-panel { grid-template-columns: 1fr; }
  .mobile-quote-bar {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    z-index: 250;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 8px;
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 999px;
    background: rgba(8,17,24,.94);
    box-shadow: 0 18px 45px rgba(0,0,0,.28);
    backdrop-filter: blur(16px);
  }
  .mobile-quote-bar a {
    min-height: 44px;
    display: grid;
    place-items: center;
    border-radius: 999px;
    color: var(--white);
    font-weight: 850;
    font-size: .82rem;
  }
  .mobile-quote-bar a:first-child {
    background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  }
  .mobile-quote-bar a:last-child {
    background: rgba(255,255,255,.1);
  }
}

/* ==========================================================================
   Global Tire Export — Light Premium Corporate Visual System
   Final override layer: keeps existing structure/functionality, updates the
   website away from an overly dark look toward a cleaner export-manufacturing
   identity with navy, steel blue, rubber gold, and trust green.
   ========================================================================== */

:root {
  --ink: #10202b;
  --ink-2: #0b3a53;
  --muted: #5d6f7b;
  --line: #d8e4e8;
  --paper: #eef4f6;
  --paper-2: #f7faf8;
  --white: #ffffff;
  --brand: #d9902f;
  --brand-dark: #b8741f;
  --brand-deep: #8c5516;
  --teal: #1f6f8b;
  --green: #1f7a5c;
  --navy: #0b3a53;
  --night: #07141c;
  --radius: 22px;
  --shadow: 0 18px 48px rgba(16, 32, 43, .10);
  --shadow-strong: 0 28px 80px rgba(16, 32, 43, .16);
}

html {
  background: #fafaf7;
}

body {
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 4%, rgba(31, 111, 139, .08), transparent 28rem),
    radial-gradient(circle at 92% 16%, rgba(217, 144, 47, .10), transparent 24rem),
    linear-gradient(180deg, #fafaf7 0%, #ffffff 44%, #f6fafb 100%);
}

a {
  color: var(--teal);
}

a:hover {
  color: var(--brand-dark);
}

.topbar {
  background: linear-gradient(90deg, var(--navy), var(--teal));
  color: rgba(255, 255, 255, .92);
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}

.site-header,
.site-header.scrolled {
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid rgba(11, 58, 83, .12);
  box-shadow: 0 14px 38px rgba(16, 32, 43, .08);
  backdrop-filter: blur(18px);
}

.logo-mark {
  background:
    radial-gradient(circle at 32% 24%, rgba(255,255,255,.88), transparent 32%),
    linear-gradient(135deg, var(--teal), var(--navy));
  box-shadow: 0 12px 28px rgba(11, 58, 83, .20);
}

.logo-text,
.nav-links a,
.nav-trigger,
.mobile-toggle {
  color: var(--ink-2);
}

.logo-tagline {
  color: var(--muted);
}

.nav-links a,
.nav-trigger {
  border: 1px solid transparent;
}

.nav-links a:hover,
.nav-trigger:hover,
.nav-links a.active,
.nav-trigger.active {
  color: var(--navy);
  background: var(--paper);
  border-color: rgba(31, 111, 139, .16);
}

.nav-cta,
.btn,
.product-card .btn,
.quote-submit,
button[type="submit"] {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  border: 1px solid rgba(217, 144, 47, .28);
  box-shadow: 0 14px 34px rgba(217, 144, 47, .22);
}

.nav-cta:hover,
.btn:hover,
.quote-submit:hover,
button[type="submit"]:hover {
  color: #fff;
  background: linear-gradient(135deg, #e4a14a, var(--brand-deep));
  transform: translateY(-2px);
}

.btn-outline,
.btn.secondary,
.btn-outline-light {
  color: var(--navy);
  background: rgba(255,255,255,.84);
  border: 1px solid rgba(31, 111, 139, .24);
  box-shadow: none;
}

.btn-outline:hover,
.btn.secondary:hover,
.btn-outline-light:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--navy), var(--teal));
}

.mega-menu {
  background: rgba(255,255,255,.98);
  border: 1px solid rgba(11, 58, 83, .12);
  box-shadow: 0 28px 70px rgba(16, 32, 43, .14);
}

.mega-link,
.mega-feature,
.resource-card,
.card,
.stat,
.highlight-item,
.product-card,
.spec-card,
.testimonial-card,
.faq-item,
.process-step,
.quality-card,
.market-card,
.case-card,
.guide-card,
.policy-card,
.form-card,
.decision-panel,
.table-wrap {
  background: rgba(255,255,255,.94);
  border-color: rgba(11, 58, 83, .12);
  box-shadow: var(--shadow);
}

.mega-link:hover,
.resource-card:hover,
.card:hover,
.product-card:hover,
.guide-card:hover,
.case-card:hover {
  border-color: rgba(217, 144, 47, .34);
  box-shadow: var(--shadow-strong);
}

.mega-link span,
.eyebrow,
.section-eyebrow,
.kicker {
  color: var(--teal);
}

.hero {
  color: #fff;
  background:
    linear-gradient(90deg, rgba(7, 20, 28, .82) 0%, rgba(11, 58, 83, .68) 43%, rgba(31, 111, 139, .16) 86%),
    url("../images/approved/vietnam-tire-factory-1280.jpg");
  background-size: cover;
  background-position: center;
}

.hero::before {
  background:
    radial-gradient(circle at 16% 18%, rgba(217, 144, 47, .24), transparent 24rem),
    linear-gradient(180deg, rgba(255,255,255,.05), rgba(7,20,28,.20));
}

.hero-content,
.hero-card {
  background: rgba(11, 58, 83, .58);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 30px;
  box-shadow: 0 32px 90px rgba(7, 20, 28, .24);
  backdrop-filter: blur(10px);
}

.hero h1,
.hero .display,
.page-hero h1 {
  color: #fff;
}

.hero p,
.hero .lead,
.page-hero p {
  color: rgba(255,255,255,.88);
}

.hero-stats,
.trust-strip {
  background: rgba(255,255,255,.94);
  color: var(--ink);
  border: 1px solid rgba(255,255,255,.65);
}

.hero-stats strong,
.trust-strip strong {
  color: var(--navy);
}

.page-hero,
.section-dark,
.quote-band,
.cta-section,
.contact-details,
.trust-panel {
  color: #fff;
  background:
    radial-gradient(circle at 84% 8%, rgba(217, 144, 47, .28), transparent 23rem),
    linear-gradient(135deg, var(--navy), var(--teal));
}

.section-dark .muted,
.section-dark p,
.quote-band p,
.cta-section p,
.contact-details p,
.trust-panel p {
  color: rgba(255,255,255,.82);
}

.section,
.content-section {
  background: transparent;
}

.section.alt,
.section-light,
.category-overview,
.technical-section,
.faq-section,
.product-overview,
.resource-section {
  background:
    radial-gradient(circle at 96% 4%, rgba(31,111,139,.08), transparent 22rem),
    var(--paper-2);
}

h1, h2, h3, h4,
.section-title,
.card h3,
.product-card h3 {
  color: var(--ink-2);
}

.muted,
.section-intro,
.card p,
.product-card p,
.mega-link p,
.resource-card p {
  color: var(--muted);
}

.card-icon,
.feature-icon,
.stat-icon,
.mega-icon {
  color: var(--navy);
  background: linear-gradient(135deg, rgba(31,111,139,.13), rgba(31,122,92,.10));
  border: 1px solid rgba(31,111,139,.18);
}

.accent,
.highlight,
.stat-number,
.product-card .price-note,
.footer-accent {
  color: var(--brand-dark);
}

.badge,
.pill,
.cert-pill,
.market-tag,
.page-jump a {
  color: var(--navy);
  background: rgba(238, 244, 246, .92);
  border: 1px solid rgba(31, 111, 139, .16);
}

.badge.gold,
.pill.gold,
.cert-pill.gold {
  color: #6b3f0d;
  background: rgba(217, 144, 47, .14);
  border-color: rgba(217, 144, 47, .28);
}

.page-jump {
  background: rgba(255,255,255,.90);
  border-bottom: 1px solid rgba(11,58,83,.10);
  backdrop-filter: blur(16px);
}

.page-jump a:hover,
.page-jump a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--navy), var(--teal));
}

table,
.spec-table {
  background: #fff;
}

th {
  color: #fff;
  background: linear-gradient(135deg, var(--navy), var(--teal));
}

td {
  border-color: rgba(11, 58, 83, .10);
}

tr:nth-child(even) td {
  background: rgba(238,244,246,.55);
}

input,
select,
textarea {
  color: var(--ink);
  background: #fff;
  border: 1px solid rgba(11,58,83,.18);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 4px rgba(31,111,139,.14);
}

.site-footer {
  color: rgba(255,255,255,.86);
  background:
    radial-gradient(circle at 8% 0%, rgba(217, 144, 47, .20), transparent 24rem),
    linear-gradient(180deg, var(--navy), var(--night));
}

.site-footer h3,
.site-footer h4,
.site-footer .footer-logo-text {
  color: #fff;
}

.site-footer a {
  color: rgba(255,255,255,.78);
}

.site-footer a:hover {
  color: #fff;
}

.footer-logo .logo-mark {
  background: #fff;
  color: var(--navy);
}

::selection {
  color: #fff;
  background: var(--teal);
}

@media (max-width: 980px) {
  .nav-links {
    background: rgba(255,255,255,.98);
    border: 1px solid rgba(11,58,83,.12);
    box-shadow: 0 22px 54px rgba(16,32,43,.14);
  }

  .nav-trigger {
    background: var(--paper);
  }
}

@media (max-width: 720px) {
  .hero-content,
  .hero-card {
    border-radius: 24px;
  }

  .mobile-quote-bar {
    background: rgba(11, 58, 83, .96);
    border: 1px solid rgba(255,255,255,.20);
    box-shadow: 0 18px 45px rgba(11,58,83,.28);
  }

  .mobile-quote-bar a:last-child {
    background: rgba(255,255,255,.14);
  }
}

/* ==========================================================================
   Lightness correction — reduce black-heavy presentation while preserving
   layout, imagery, navigation, content, forms, schemas and responsiveness.
   ========================================================================== */

body {
  background:
    radial-gradient(circle at 8% 4%, rgba(31, 111, 139, .07), transparent 28rem),
    radial-gradient(circle at 92% 14%, rgba(217, 144, 47, .09), transparent 24rem),
    linear-gradient(180deg, #fbfbf6 0%, #ffffff 42%, #f3f8f9 100%);
}

.hero {
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(250,250,247,.94) 0%, rgba(250,250,247,.82) 38%, rgba(250,250,247,.26) 74%, rgba(250,250,247,.06) 100%),
    url("../images/approved/vietnam-tire-factory-1280.jpg");
  background-size: cover;
  background-position: center;
}

.hero::before {
  background:
    radial-gradient(circle at 16% 18%, rgba(217, 144, 47, .16), transparent 24rem),
    linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.04));
}

.hero::after {
  background: linear-gradient(transparent, rgba(250,250,247,.36));
}

.hero-content,
.hero-card {
  color: var(--ink);
  background: rgba(255,255,255,.88);
  border: 1px solid rgba(11,58,83,.12);
  box-shadow: 0 30px 80px rgba(16,32,43,.14);
}

.hero h1,
.hero .display {
  color: var(--ink-2);
}

.hero p,
.hero .lead,
.hero .eyebrow {
  color: var(--ink);
}

.hero .eyebrow {
  color: var(--teal);
}

.hero-points {
  color: var(--ink-2);
}

.hero .btn-light {
  color: var(--navy);
  background: #fff;
  border: 1px solid rgba(11,58,83,.18);
}

.hero .btn-light:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--navy), var(--teal));
}

.page-hero {
  color: var(--ink);
  background:
    radial-gradient(circle at 84% 8%, rgba(217,144,47,.18), transparent 23rem),
    linear-gradient(135deg, #f8fbfb, #e8f2f5);
  border-bottom: 1px solid rgba(11,58,83,.10);
}

.page-hero h1,
.page-hero .lead,
.page-hero p,
.breadcrumbs {
  color: var(--ink-2);
}

.breadcrumbs a {
  color: var(--teal);
}

.section-dark,
.contact-details,
.trust-panel {
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 8%, rgba(31,111,139,.10), transparent 22rem),
    linear-gradient(135deg, #ffffff, #eef4f6);
  border-top: 1px solid rgba(11,58,83,.08);
  border-bottom: 1px solid rgba(11,58,83,.08);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark p,
.section-dark .text-light,
.section-dark .muted,
.section-dark .eyebrow,
.contact-details h2,
.contact-details h3,
.contact-details p,
.trust-panel h2,
.trust-panel h3,
.trust-panel p {
  color: var(--ink-2);
}

.section-dark .eyebrow,
.contact-details .eyebrow,
.trust-panel .eyebrow {
  color: var(--teal);
}

.section-dark .process-step,
.section-dark .dashboard-card,
.section-dark .card,
.contact-details .card,
.trust-panel .card {
  color: var(--ink);
  background: rgba(255,255,255,.96);
  border: 1px solid rgba(11,58,83,.12);
  box-shadow: var(--shadow);
}

.section-dark .process-step h3,
.section-dark .dashboard-card strong,
.section-dark .dashboard-card span,
.section-dark .spec-note,
.section-dark .text-light {
  color: var(--ink-2) !important;
}

.quote-band,
.cta-section {
  color: var(--ink);
  background:
    radial-gradient(circle at 86% 12%, rgba(217,144,47,.16), transparent 24rem),
    linear-gradient(135deg, #fffaf2, #eef4f6);
  border-top: 1px solid rgba(11,58,83,.10);
  border-bottom: 1px solid rgba(11,58,83,.10);
}

.quote-band h2,
.quote-band p,
.cta-section h2,
.cta-section p {
  color: var(--ink-2);
}

.quote-band .eyebrow,
.cta-section .eyebrow {
  color: var(--teal) !important;
}

.quote-band .btn-light,
.cta-section .btn-light {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  border-color: rgba(217,144,47,.30);
}

.dashboard-card {
  background: #fff;
}

.callout-dark {
  color: var(--ink);
  background: #eef4f6;
}

.mobile-quote-bar {
  background: rgba(255,255,255,.94);
  border: 1px solid rgba(11,58,83,.14);
  box-shadow: 0 18px 45px rgba(16,32,43,.16);
}

.mobile-quote-bar a:first-child {
  color: #fff;
}

.mobile-quote-bar a:last-child {
  color: var(--navy);
  background: rgba(31,111,139,.10);
}

@media (max-width: 720px) {
  .hero {
    background:
      linear-gradient(180deg, rgba(250,250,247,.94) 0%, rgba(250,250,247,.80) 58%, rgba(250,250,247,.30) 100%),
      url("../images/approved/vietnam-tire-factory-720.jpg");
    background-size: cover;
    background-position: center;
  }

  .hero-content {
    background: rgba(255,255,255,.90);
  }
}