:root {
  --ink: #14202b;
  --muted-ink: #5e6b75;
  --paper: #f7f5ef;
  --white: #ffffff;
  --line: #d8d4c8;
  --copper: #b4633b;
  --steel: #31526a;
  --olive: #5d6b48;
  --charcoal: #101820;
  --shadow: 0 18px 60px rgba(16, 24, 32, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
    sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 64px);
  color: var(--white);
  background: linear-gradient(180deg, rgba(16, 24, 32, 0.72), rgba(16, 24, 32, 0));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.56);
  background: rgba(255, 255, 255, 0.12);
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 24px);
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
}

.nav a {
  border-bottom: 1px solid transparent;
}

.nav a:hover {
  border-color: currentColor;
}

.hero {
  position: relative;
  min-height: 86vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(9, 14, 20, 0.9) 0%, rgba(9, 14, 20, 0.68) 38%, rgba(9, 14, 20, 0.2) 72%),
    linear-gradient(0deg, rgba(16, 24, 32, 0.5), rgba(16, 24, 32, 0.08));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(840px, calc(100% - 40px));
  margin-left: clamp(20px, 7vw, 88px);
  padding-top: 72px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--copper);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(40px, 5.8vw, 68px);
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.14;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.25;
}

.hero-copy {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(16px, 2vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button,
.inquiry-form button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  padding: 0 22px;
  font-weight: 800;
  cursor: pointer;
}

.button.primary,
.inquiry-form button {
  color: var(--white);
  background: var(--copper);
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.44);
  background: rgba(255, 255, 255, 0.1);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 620px;
  margin: 32px 0 0;
}

.hero-stats div {
  padding: 18px;
  border-left: 3px solid var(--copper);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px);
}

.hero-stats dt {
  font-size: 28px;
  font-weight: 900;
}

.hero-stats dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 14px;
}

.value-strip {
  padding: 0 clamp(20px, 5vw, 64px);
  background: var(--charcoal);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.14);
}

.value-grid div {
  min-height: 190px;
  padding: 28px;
  color: var(--white);
  background: #18232d;
}

.value-grid span {
  display: block;
  margin-bottom: 28px;
  color: #d6a06f;
  font-weight: 900;
}

.value-grid strong {
  display: block;
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.2;
}

.value-grid p {
  color: rgba(255, 255, 255, 0.72);
}

.section,
.section-band {
  padding: clamp(72px, 9vw, 120px) clamp(20px, 5vw, 64px);
}

.section-inner {
  width: min(1180px, 100%);
  margin: 0 auto;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 6vw, 88px);
  align-items: start;
}

.intro {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.intro .split > p {
  color: var(--muted-ink);
  font-size: 19px;
}

.factory-snapshot {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
}

.factory-snapshot div {
  min-height: 110px;
  padding: 18px;
  background: var(--paper);
}

.factory-snapshot strong,
.factory-snapshot span {
  display: block;
}

.factory-snapshot strong {
  margin-bottom: 10px;
  color: var(--steel);
  font-size: 13px;
  text-transform: uppercase;
}

.factory-snapshot span {
  color: var(--ink);
  font-weight: 800;
  line-height: 1.35;
}

.section-head {
  max-width: 720px;
  margin-bottom: 38px;
}

.section-head p:not(.section-kicker) {
  color: var(--muted-ink);
  font-size: 18px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.capability-card {
  min-height: 260px;
  padding: 26px;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

.capability-card .icon {
  display: inline-flex;
  margin-bottom: 40px;
  color: var(--steel);
  font-weight: 900;
}

.capability-card p,
.category-main p,
.quality-panel p,
.process p,
.inquiry p {
  color: var(--muted-ink);
}

.muted {
  background: #e9ece7;
}

.category-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 28px;
  align-items: stretch;
}

.category-main {
  padding: 32px;
  color: var(--white);
  background: var(--steel);
}

.category-main p {
  color: rgba(255, 255, 255, 0.78);
}

.category-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.category-list span {
  display: flex;
  min-height: 62px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid rgba(49, 82, 106, 0.18);
  background: rgba(255, 255, 255, 0.72);
  font-weight: 800;
}

.product-grid,
.buyer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-grid article,
.buyer-grid article {
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.product-grid span {
  display: block;
  margin-bottom: 34px;
  color: var(--steel);
  font-weight: 900;
}

.product-grid p,
.buyer-grid p,
.service-copy p,
.mission-card p {
  color: var(--muted-ink);
}

.service-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(34px, 7vw, 96px);
  align-items: start;
}

.service-copy {
  position: sticky;
  top: 104px;
}

.text-link {
  display: inline-flex;
  margin-top: 10px;
  color: var(--copper);
  font-weight: 900;
  border-bottom: 2px solid currentColor;
}

.service-list {
  display: grid;
  gap: 14px;
}

.service-list article {
  padding: 26px;
  border-left: 4px solid var(--copper);
  background: var(--white);
  box-shadow: var(--shadow);
}

.service-list p {
  color: var(--muted-ink);
}

.buyer-section {
  background: #dde4e6;
}

.buyer-grid article {
  min-height: 190px;
  box-shadow: none;
}

.factory-section {
  background: var(--white);
}

.factory-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 6vw, 86px);
  align-items: center;
}

.factory-panel p {
  color: var(--muted-ink);
}

.quality-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 6vw, 86px);
  align-items: center;
}

.quality-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.quality-list li {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.quality-list strong {
  color: var(--olive);
}

.quality-list span {
  color: var(--muted-ink);
}

.process-section {
  color: var(--white);
  background: var(--charcoal);
}

.process-section .section-kicker {
  color: #d6a06f;
}

.process {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(255, 255, 255, 0.16);
}

.process li {
  min-height: 210px;
  padding: 24px;
  background: var(--charcoal);
}

.process span {
  display: block;
  margin-bottom: 44px;
  color: #d6a06f;
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
}

.process p {
  color: rgba(255, 255, 255, 0.72);
}

.mission-section {
  background: #e9ece7;
}

.mission-card {
  max-width: 980px;
  padding: clamp(34px, 6vw, 68px);
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(20, 32, 43, 0.94), rgba(49, 82, 106, 0.92)),
    var(--steel);
}

.mission-card h2 {
  max-width: 820px;
}

.mission-card p:not(.section-kicker) {
  max-width: 790px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 20px;
}

.trust-map {
  background: var(--white);
}

.trust-map-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.trust-map-grid a {
  display: grid;
  min-height: 170px;
  align-content: start;
  gap: 12px;
  padding: 26px;
  background: var(--paper);
}

.trust-map-grid strong {
  color: var(--ink);
  font-size: 20px;
  line-height: 1.25;
}

.trust-map-grid span {
  color: var(--muted-ink);
}

.page-hero {
  position: relative;
  min-height: 560px;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--white);
  padding: 140px clamp(20px, 5vw, 64px) 78px;
}

.page-hero.compact {
  min-height: 480px;
}

.page-hero-media,
.page-hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.page-hero-media {
  object-fit: cover;
}

.page-hero-overlay {
  background:
    linear-gradient(90deg, rgba(9, 14, 20, 0.9) 0%, rgba(9, 14, 20, 0.68) 45%, rgba(9, 14, 20, 0.2) 100%),
    linear-gradient(0deg, rgba(16, 24, 32, 0.6), rgba(16, 24, 32, 0.04));
}

.page-hero-content {
  position: relative;
  z-index: 1;
  width: min(900px, 100%);
}

.page-hero h1 {
  max-width: 900px;
  font-size: clamp(40px, 5.6vw, 70px);
}

.page-hero p:not(.eyebrow) {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 19px;
}

.proof-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(28px, 6vw, 80px);
  align-items: start;
}

.proof-layout > div > p,
.trust-copy p:not(.section-kicker) {
  color: var(--muted-ink);
  font-size: 18px;
}

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

.spec-table div {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.spec-table strong {
  color: var(--steel);
}

.spec-table span {
  color: var(--ink);
  font-weight: 700;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.detail-grid article,
.checklist-card,
.quality-stage-grid article,
.timeline article,
.faq-list article {
  padding: 26px;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

.detail-grid p,
.checklist-card li,
.quality-stage-grid p,
.timeline p,
.timeline strong,
.faq-list p {
  color: var(--muted-ink);
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.button.secondary.dark {
  color: var(--ink);
  border-color: var(--line);
  background: transparent;
}

.product-grid.expanded article {
  min-height: 330px;
}

.product-grid ul,
.checklist-card ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--muted-ink);
}

.service-list.large {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.service-list.large article {
  min-height: 240px;
}

.quality-stage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.quality-stage-grid span {
  display: block;
  margin-bottom: 30px;
  color: var(--copper);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.inspection-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.inspection-list li {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.inspection-list strong {
  color: var(--olive);
}

.inspection-list span {
  color: var(--muted-ink);
}

.process-page-section {
  background: var(--paper);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.timeline span {
  display: block;
  margin-bottom: 24px;
  color: var(--steel);
  font-weight: 900;
}

.timeline strong {
  display: block;
  margin-top: 18px;
  color: var(--ink);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list article {
  box-shadow: none;
}

.faq-list h3 {
  color: var(--steel);
}

.checklist-card.spaced {
  margin-top: 28px;
}

.cta-band {
  padding: clamp(54px, 7vw, 86px) clamp(20px, 5vw, 64px);
  color: var(--white);
  background: var(--steel);
}

.cta-band .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
}

.cta-band h2 {
  margin-bottom: 8px;
}

.cta-band p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
}

.inquiry {
  background: var(--white);
}

.inquiry-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(28px, 6vw, 90px);
  align-items: start;
}

.contact-strip {
  display: grid;
  gap: 10px;
  margin-top: 30px;
  color: var(--steel);
  font-weight: 800;
}

.inquiry-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.inquiry-form label {
  display: grid;
  gap: 8px;
  color: var(--muted-ink);
  font-size: 13px;
  font-weight: 800;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  border: 1px solid #c6c1b5;
  padding: 13px 14px;
  color: var(--ink);
  background: var(--white);
  font: inherit;
}

.inquiry-form textarea {
  resize: vertical;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 5vw, 64px);
  color: rgba(255, 255, 255, 0.76);
  background: var(--charcoal);
}

.footer p {
  margin: 0;
}

@media (max-width: 920px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
  }

  .nav {
    display: none;
  }

  .hero {
    min-height: 820px;
  }

  .hero-content {
    margin: 0 auto;
  }

  .split,
  .category-layout,
  .quality-panel,
  .service-layout,
  .factory-panel,
  .proof-layout,
  .inquiry-grid {
    grid-template-columns: 1fr;
  }

  .capability-grid,
  .product-grid,
  .buyer-grid,
  .value-grid,
  .detail-grid,
  .detail-grid.two,
  .quality-stage-grid,
  .timeline,
  .service-list.large,
  .trust-map-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .service-copy {
    position: static;
  }

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

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

  .process li {
    min-height: auto;
  }

  .process span {
    margin-bottom: 18px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 16px 18px;
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: 760px;
  }

  .hero-overlay {
    background: linear-gradient(90deg, rgba(9, 14, 20, 0.9), rgba(9, 14, 20, 0.42));
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-stats,
  .capability-grid,
  .category-list,
  .product-grid,
  .buyer-grid,
  .value-grid,
  .detail-grid,
  .detail-grid.two,
  .quality-stage-grid,
  .timeline,
  .service-list.large,
  .trust-map-grid,
  .factory-snapshot {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    display: none;
  }

  h1 {
    font-size: clamp(38px, 12vw, 54px);
  }

  .value-grid div,
  .product-grid article,
  .buyer-grid article {
    min-height: auto;
  }

  .page-hero,
  .page-hero.compact {
    min-height: 500px;
    padding-top: 120px;
    padding-bottom: 56px;
  }

  .page-hero h1 {
    font-size: clamp(36px, 11vw, 52px);
  }

  .spec-table div,
  .inspection-list li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .cta-band .section-inner {
    grid-template-columns: 1fr;
  }

  .quality-list li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .inquiry-form {
    padding: 20px;
  }

  .footer {
    flex-direction: column;
  }
}