:root {
  color-scheme: light;
  --ink: #18212f;
  --muted: #5e6b7c;
  --soft: #f4f7f9;
  --paper: #ffffff;
  --line: #dce3ea;
  --navy: #0f2f4a;
  --teal: #0f7c75;
  --steel: #6d7c8e;
  --amber: #c47a25;
  --copper: #9b5f2a;
  --graphite: #162233;
  --danger: #b42318;
  --shadow: 0 18px 45px rgba(20, 37, 57, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: #fff;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(220, 227, 234, 0.9);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
}

.header-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
  color: var(--navy);
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: #fff;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  font-weight: 900;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #334155;
  font-size: 14px;
}

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

.language-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--teal);
  background: #fff;
  font-size: 13px;
  font-weight: 800;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
}

.button.primary {
  border-color: var(--teal);
  background: var(--teal);
  color: #fff;
}

.button.dark {
  border-color: var(--navy);
  background: var(--navy);
  color: #fff;
}

.hero {
  position: relative;
  min-height: 690px;
  display: flex;
  align-items: stretch;
  overflow: hidden;
  background: #091725;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.58;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 18, 30, 0.94), rgba(7, 18, 30, 0.76) 48%, rgba(7, 18, 30, 0.34)),
    linear-gradient(180deg, rgba(7, 18, 30, 0.12), rgba(7, 18, 30, 0.54));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 92px 0 64px;
  color: #fff;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(330px, 430px);
  gap: 44px;
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: #c8f2ec;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(42px, 5.4vw, 72px);
  line-height: 1.01;
  letter-spacing: 0;
}

.hero p {
  max-width: 660px;
  margin: 22px 0 0;
  color: #dbe7ef;
  font-size: 18px;
  line-height: 1.7;
}

.hero-actions {
  margin-top: 30px;
}

.hero-stats {
  width: min(900px, 100%);
  margin-top: 62px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-stat {
  padding: 18px;
  background: rgba(12, 28, 44, 0.64);
}

.hero-stat strong {
  display: block;
  margin-bottom: 6px;
  font-size: 22px;
}

.hero-stat span {
  color: #cfdce8;
  font-size: 13px;
  line-height: 1.45;
}

.hero-proof-panel {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.09);
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.28);
  padding: 24px;
  backdrop-filter: blur(18px);
}

.proof-kicker {
  display: inline-flex;
  margin-bottom: 14px;
  border: 1px solid rgba(200, 242, 236, 0.28);
  border-radius: 999px;
  padding: 7px 10px;
  color: #c8f2ec;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.hero-proof-panel h2 {
  margin: 0;
  font-size: 26px;
  line-height: 1.14;
}

.proof-checklist {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.proof-checklist div {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.07);
  padding: 8px 10px;
}

.proof-checklist span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(196, 122, 37, 0.22);
  color: #ffd9a6;
  font-size: 12px;
  font-weight: 900;
}

.proof-checklist strong {
  color: #edf6f8;
  font-size: 14px;
  line-height: 1.25;
}

.hero-proof-panel ul {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.hero-proof-panel li {
  position: relative;
  padding-left: 24px;
  color: #dce8ef;
  line-height: 1.55;
  font-size: 14px;
}

.hero-proof-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--amber);
}

.proof-image-strip {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.proof-image-strip img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 7px;
  background: #fff;
}

.signal-band {
  background: #f7fafb;
  border-bottom: 1px solid var(--line);
}

.signal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.25fr 0.9fr;
  gap: 1px;
  background: var(--line);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.signal-grid > div {
  min-height: 108px;
  display: grid;
  align-content: center;
  gap: 8px;
  background: #fff;
  padding: 20px;
}

.signal-grid span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.signal-grid strong {
  color: var(--graphite);
  font-size: 16px;
  line-height: 1.35;
}

.section {
  padding: 76px 0;
}

.section.soft {
  background: var(--soft);
}

.visual-proof {
  background: #fff;
}

.visual-proof-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  grid-template-rows: repeat(2, minmax(220px, 1fr));
  gap: 18px;
}

.proof-tile {
  position: relative;
  min-height: 250px;
  overflow: hidden;
  border-radius: 8px;
  background: #101b29;
}

.proof-tile-large {
  grid-row: span 2;
  min-height: 520px;
}

.proof-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.78;
  transform: scale(1.01);
}

.proof-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 16, 28, 0.08), rgba(5, 16, 28, 0.78));
}

.proof-tile div {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 22px;
  z-index: 1;
  color: #fff;
}

.proof-tile span {
  display: inline-flex;
  margin-bottom: 8px;
  color: #d8f1ed;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.proof-tile h3 {
  margin: 0;
  max-width: 560px;
  font-size: clamp(20px, 2.2vw, 32px);
  line-height: 1.12;
}

.sourcing-dossier {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.sourcing-dossier article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.92), rgba(247,250,251,0.98)),
    #fff;
  padding: 18px;
  box-shadow: 0 10px 26px rgba(20, 37, 57, 0.07);
}

.sourcing-dossier span {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.sourcing-dossier h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.3;
}

.sourcing-dossier p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-head p {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

html[lang="zh-CN"] .hero h1 {
  max-width: 860px;
  font-size: clamp(34px, 3.8vw, 48px);
  line-height: 1.18;
}

html[lang="zh-CN"] .hero p {
  max-width: 720px;
  font-size: 16px;
}

html[lang="zh-CN"] .section-head h2 {
  max-width: 720px;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.24;
}

html[lang="zh-CN"] .split h2 {
  font-size: clamp(23px, 2.2vw, 30px);
  line-height: 1.24;
}

html[lang="zh-CN"] .hero-stat strong {
  font-size: 20px;
}

.category-tabs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: 22px;
}

.category-tabs button {
  display: inline-grid;
  gap: 3px;
  white-space: nowrap;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  padding: 10px 15px;
  color: #334155;
  cursor: pointer;
}

.category-tabs small {
  display: none;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}

.category-tabs button.active {
  border-color: var(--teal);
  background: #e9f7f5;
  color: var(--teal);
  font-weight: 800;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.product-grid[data-grid-mode="category"] {
  gap: 24px;
}

.product-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(20, 37, 57, 0.06);
}

.category-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(20, 37, 57, 0.08);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.category-card:hover {
  transform: translateY(-3px);
  border-color: rgba(15, 124, 117, 0.35);
  box-shadow: 0 18px 40px rgba(20, 37, 57, 0.13);
}

.button,
.proof-tile,
.sourcing-dossier article,
.feature,
.step {
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.button:hover,
.sourcing-dossier article:hover,
.feature:hover,
.step:hover {
  transform: translateY(-2px);
}


.category-card-image {
  display: block;
  aspect-ratio: 4 / 3;
  background: #ffffff;
  overflow: hidden;
}

.category-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #ffffff;
}

.category-card-body {
  display: grid;
  gap: 14px;
  padding: 18px;
  flex: 1;
}

.category-card-body h3 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0;
}

.category-card-body p {
  margin: 0;
  min-height: 52px;
  color: var(--muted);
  line-height: 1.6;
}

.category-card-meta {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  color: #334155;
  font-size: 13px;
}

.category-card-meta li {
  display: grid;
  gap: 3px;
}

.category-card-meta strong {
  font-size: 12px;
  color: var(--ink);
}

.category-card-meta span {
  color: var(--muted);
  line-height: 1.5;
}

.category-card-link {
  margin-top: auto;
}

.product-image {
  display: block;
  aspect-ratio: 4 / 3;
  background: #dfe8ef;
  overflow: hidden;
}

.product-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-body {
  padding: 18px;
}

.badge {
  display: inline-flex;
  padding: 5px 8px;
  border-radius: 5px;
  background: #eef4f6;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
}

.product-card h3 {
  margin: 12px 0 8px;
  font-size: 20px;
  letter-spacing: 0;
}

.product-card p {
  min-height: 74px;
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.product-meta {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
  color: #334155;
  font-size: 13px;
}

.text-link {
  display: inline-flex;
  margin-top: 16px;
  color: var(--teal);
  font-weight: 800;
  font-size: 14px;
}

.empty-state {
  grid-column: 1 / -1;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: #f8fafc;
  padding: 22px;
  color: var(--muted);
  text-align: center;
}

.host-category-note {
  margin-top: 10px !important;
  color: var(--teal) !important;
  font-weight: 800;
}

.product-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.48fr);
  gap: 28px;
  align-items: start;
}

.product-detail-main h1 {
  margin: 16px 0 14px;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.05;
  letter-spacing: 0;
}

.detail-summary,
.detail-block p {
  color: var(--muted);
  line-height: 1.75;
}

.product-detail-image {
  margin: 24px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #dfe8ef;
}

.product-image-zoom {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}

.product-image-zoom:focus-visible {
  outline: 3px solid rgba(15, 124, 117, 0.45);
  outline-offset: -3px;
}

.product-detail-image img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  background: #f7fafb;
}

body[data-host-category="electric-vehicles"] .hero-media img {
  object-position: center bottom;
}

body[data-host-category="electric-vehicles"] .product-card {
  box-shadow: 0 10px 26px rgba(16, 35, 50, 0.08);
}

body[data-host-category="electric-vehicles"] .product-image {
  background: #f7fafb;
}

body[data-host-category="electric-vehicles"] .product-card img {
  object-fit: contain;
  padding: 10px;
}

body[data-host-category="machinery"] .hero-media img {
  object-position: center;
}

body[data-host-category="machinery"] .product-image {
  background: #dfe8ef;
}

body[data-host-category="machinery"] .product-card img {
  object-fit: cover;
  padding: 0;
}

body[data-host-category="electronics"] .hero-media img {
  object-position: center;
}

body[data-host-category="electronics"] .product-image {
  background: #f7fafb;
}

body[data-host-category="electronics"] .product-card img {
  object-fit: cover;
  padding: 0;
}

.product-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin: -8px 0 24px;
}

.product-gallery .product-image-zoom {
  display: block;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
  background: #f7fafb;
}

.product-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

body[data-product-category="machinery"] .product-detail-image img {
  object-fit: cover;
  background: #fff;
}

body[data-product-category="steel"] .product-detail-image img,
body[data-product-category="steel"] .product-gallery img {
  object-fit: cover;
  background: #fff;
}

body[data-product-category="electronics"] .product-detail-image img,
body[data-product-category="electronics"] .product-gallery img {
  object-fit: contain;
  background: #fff;
}

body.lightbox-open {
  overflow: hidden;
}

.product-lightbox[hidden] {
  display: none;
}

.product-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 28px;
}

.product-lightbox-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(7, 20, 34, 0.84);
  cursor: zoom-out;
}

.product-lightbox-panel {
  position: relative;
  z-index: 1;
  width: min(1080px, 100%);
  max-height: calc(100vh - 56px);
  display: grid;
  place-items: center;
}

.product-lightbox-panel img {
  max-width: 100%;
  max-height: calc(100vh - 56px);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  object-fit: contain;
}

.product-lightbox-close {
  position: absolute;
  top: -18px;
  right: -18px;
  z-index: 2;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font-size: 28px;
  line-height: 1;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
}

.product-lightbox-close:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.6);
  outline-offset: 3px;
}

.detail-block {
  margin: 24px 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.detail-block h2,
.detail-inquiry-form h2 {
  margin: 0 0 14px;
  letter-spacing: 0;
}

.detail-list {
  margin-top: 0;
}

.product-detail-side {
  position: sticky;
  top: 96px;
}

.split {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 36px;
  align-items: center;
}

.feature-list {
  display: grid;
  gap: 16px;
}

.feature {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  align-items: start;
}

.feature-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #eaf5f4;
  color: var(--teal);
  font-weight: 900;
}

.feature h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.step {
  border-top: 3px solid var(--teal);
  background: #fff;
  padding: 22px;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(20, 37, 57, 0.06);
}

.step span {
  color: var(--amber);
  font-weight: 900;
  font-size: 13px;
}

.step h3 {
  margin: 12px 0 8px;
}

.step p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.inquiry {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 34px;
  align-items: start;
}

.form-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  box-shadow: var(--shadow);
}

#inquiry .form-panel {
  border-top: 4px solid var(--teal);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 7px;
}

.field.full {
  grid-column: 1 / -1;
}

label {
  font-weight: 700;
  color: #334155;
  font-size: 13px;
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: #fff;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.form-note {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.rfq-hero {
  padding: 72px 0;
  background:
    linear-gradient(120deg, rgba(244, 247, 249, 0.96), rgba(233, 247, 245, 0.88)),
    url("/assets/img/product-rebar-stock.png") center / cover;
}

.rfq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.75fr);
  gap: 32px;
  align-items: center;
}

.rfq-hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: 0;
}

.rfq-hero p {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.rfq-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.rfq-trust-row span {
  border: 1px solid rgba(15, 124, 117, 0.24);
  border-radius: 6px;
  background: #fff;
  color: var(--teal);
  padding: 9px 11px;
  font-size: 13px;
  font-weight: 800;
}

.rfq-side-panel,
.rfq-contact-panel,
.rfq-form-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.rfq-side-panel {
  padding: 24px;
}

.rfq-side-panel h2,
.rfq-contact-panel h2 {
  margin: 0 0 16px;
  letter-spacing: 0;
}

.rfq-steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rfq-steps li {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 3px solid var(--teal);
}

.rfq-steps span {
  color: var(--muted);
  line-height: 1.55;
  font-size: 14px;
}

.rfq-layout {
  display: grid;
  grid-template-columns: minmax(0, 940px);
  justify-content: center;
  gap: 24px;
  align-items: start;
}

.rfq-form-panel {
  padding: 0;
  overflow: hidden;
}

.rfq-form-section {
  padding: 24px;
  border-bottom: 1px solid var(--line);
}

.rfq-section-head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 18px;
}

.rfq-section-head > span {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #e9f7f5;
  color: var(--teal);
  font-weight: 900;
}

.rfq-section-head h2 {
  margin: 0 0 4px;
  letter-spacing: 0;
}

.rfq-section-head p,
.rfq-contact-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.rfq-submit-row {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px 24px 0;
}

.rfq-submit-row .button {
  width: auto;
  min-width: 190px;
}

.rfq-form-panel .form-note {
  padding: 0 24px 24px;
}

.rfq-contact-panel {
  width: min(760px, 100%);
  margin: 0 auto;
  text-align: center;
  padding: 22px;
}

.rfq-contact-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.rfq-contact-list div {
  display: grid;
  gap: 4px;
  justify-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #f9fbfc;
}

.rfq-contact-list span {
  color: var(--muted);
  line-height: 1.5;
}

.rfq-upload-box {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 1px dashed #b7c4d2;
  border-radius: 6px;
  background: #f9fbfc;
  padding: 0 14px;
  color: #334155;
  cursor: pointer;
}

.rfq-upload-box:hover {
  border-color: var(--teal);
  background: #eef8f7;
}

.rfq-upload-box span::before {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  font-weight: 900;
}

.rfq-upload-box strong {
  color: var(--muted);
  font-size: 13px;
}

.rfq-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.rfq-file-note {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.rfq-file-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 32px;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 0 8px 0 10px;
  color: #334155;
}

.rfq-file-chip span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rfq-file-chip button {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: #ffe8e4;
  color: var(--danger);
  font-size: 16px;
  font-weight: 900;
  cursor: pointer;
}

.seo-category-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 22px;
}

.seo-category-links a,
.breadcrumb a,
.breadcrumb span {
  color: #36536d;
  font-size: 14px;
}

.seo-category-links a {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 10px 12px;
  text-decoration: none;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 16px;
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.site-footer {
  background: #101b29;
  color: #d8e1ea;
  padding: 38px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr .9fr 1fr 1fr;
  gap: 26px;
}

.site-footer h3,
.site-footer h4 {
  color: #fff;
  margin: 0 0 12px;
}

.site-footer p,
.site-footer a {
  color: #b7c4d2;
  line-height: 1.7;
}

.status {
  min-height: 20px;
  color: var(--teal);
  font-weight: 700;
}

.status.error {
  color: var(--danger);
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid,
  .signal-grid,
  .visual-proof-grid,
  .sourcing-dossier,
  .hero-stats,
  .product-grid,
  .process,
  .split,
  .inquiry,
  .product-detail-layout,
  .rfq-hero-grid,
  .rfq-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 28px;
  }

  .hero-proof-panel {
    max-width: 560px;
  }

  .signal-grid {
    border-top: 1px solid var(--line);
  }

  .signal-grid > div {
    min-height: 92px;
  }

  .proof-tile-large {
    grid-row: auto;
    min-height: 330px;
  }

  .proof-tile {
    min-height: 280px;
  }

  .rfq-contact-panel {
    position: static;
  }

  .product-detail-side {
    position: static;
  }

  .rfq-contact-list {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .header-inner {
    min-height: 64px;
    width: min(100% - 24px, 1180px);
    gap: 10px;
  }

  .brand {
    font-size: 15px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .header-actions {
    gap: 8px;
  }

  .language-switch {
    min-height: 40px;
    padding: 0 10px;
  }

  .header-actions .button {
    width: auto;
    min-height: 40px;
    padding: 0 14px;
  }

  .hero-content {
    padding-top: 76px;
    padding-bottom: 42px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero p {
    font-size: 16px;
  }

  .hero-stats {
    margin-top: 34px;
  }

  .hero-proof-panel {
    padding: 18px;
  }

  .proof-image-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .signal-grid > div {
    padding: 16px;
  }

  .visual-proof-grid {
    gap: 12px;
  }

  html[lang="zh-CN"] .hero h1 {
    font-size: 30px;
    line-height: 1.18;
  }

  html[lang="zh-CN"] .section-head h2,
  html[lang="zh-CN"] .split h2 {
    font-size: 24px;
    line-height: 1.24;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .product-lightbox {
    padding: 16px;
  }

  .product-lightbox-panel,
  .product-lightbox-panel img {
    max-height: calc(100vh - 32px);
  }

  .product-lightbox-close {
    top: 10px;
    right: 10px;
  }
}