:root {
  --navy: #0f2742;
  --navy-2: #163a5c;
  --ink: #152331;
  --muted: #667789;
  --line: #e3e9ee;
  --paper: #f5f7f9;
  --white: #ffffff;
  --orange: #f26a21;
  --orange-dark: #c94c12;
  --shadow: 0 28px 70px rgba(15, 39, 66, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.58;
}

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

img {
  max-width: 100%;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 64px);
  color: var(--white);
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 12px 30px rgba(15, 39, 66, 0.1);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 6px;
  background: var(--orange);
  color: var(--white);
  font-weight: 900;
  letter-spacing: 0;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.2;
}

.brand strong {
  font-size: 16px;
}

.brand small {
  margin-top: 2px;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.72;
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 2.2vw, 30px);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.nav a {
  opacity: 0.88;
}

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

.header-action,
.button,
.quote-form button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 4px;
  font-weight: 900;
  cursor: pointer;
}

.header-action,
.button.primary,
.quote-form button {
  background: var(--orange);
  color: var(--white);
}

.header-action {
  padding: 0 18px;
}

.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}

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

.hero-media {
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(8, 26, 45, 0.92), rgba(8, 26, 45, 0.7) 42%, rgba(8, 26, 45, 0.18)),
    linear-gradient(0deg, rgba(8, 26, 45, 0.72), rgba(8, 26, 45, 0.08) 58%);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 100vh;
  grid-template-columns: minmax(0, 760px) minmax(280px, 430px);
  gap: clamp(36px, 7vw, 110px);
  align-items: center;
  padding: 128px clamp(22px, 6vw, 88px) 72px;
}

.hero-content {
  max-width: 780px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(42px, 6.7vw, 86px);
  line-height: 1.03;
  letter-spacing: 0;
}

.hero-slogan {
  margin: 22px 0 0;
  color: var(--orange);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
}

.hero-copy {
  max-width: 720px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(17px, 1.6vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  padding: 0 22px;
}

.button.secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.16);
}

.button.ghost {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.42);
  background: transparent;
}

.hero-spec {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.22);
  box-shadow: var(--shadow);
}

.hero-spec div {
  padding: 28px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--navy);
}

.hero-spec strong {
  display: block;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1;
}

.hero-spec span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-weight: 800;
}

.section {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
  padding: 98px 0;
}

.section-head {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(31px, 4.4vw, 56px);
  line-height: 1.12;
}

.section-head p,
.intro-strip p,
.intro-strip h2 + p {
  color: var(--muted);
}

.section-head > p:last-child {
  margin: 16px 0 0;
  font-size: 18px;
}

.intro-strip {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: clamp(28px, 6vw, 84px);
  align-items: start;
  border-bottom: 1px solid var(--line);
}

.intro-strip p {
  margin: 0;
  color: var(--orange);
  font-weight: 900;
}

.intro-strip h2 {
  font-size: clamp(30px, 4vw, 48px);
}

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

.solution-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}

.solution-card {
  overflow: hidden;
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 18px 46px rgba(15, 39, 66, 0.08);
}

.solution-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.solution-card div {
  padding: clamp(22px, 3vw, 34px);
}

.solution-card span,
.application-grid span,
.why-grid span,
.news-grid span,
.contact-list span,
.about-panel span {
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.solution-card h3 {
  margin: 8px 0 10px;
  color: var(--navy);
  font-size: 28px;
  line-height: 1.18;
}

.solution-card p {
  margin: 0;
  color: var(--muted);
}

.solution-card ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.solution-card li {
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--white);
  color: #314357;
  font-size: 13px;
  font-weight: 800;
}

.solution-card a,
.news-grid article::after {
  display: inline-flex;
  width: fit-content;
  margin-top: 24px;
  color: var(--orange);
  font-weight: 900;
}

.brand-section,
.why-section {
  background: var(--paper);
}

.logo-wall {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.brand-logo-card {
  display: grid;
  min-height: 112px;
  place-items: center;
  padding: 18px;
  border: 2px solid transparent;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 28px rgba(15, 39, 66, 0.06);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.brand-logo-card:hover,
.brand-logo-card.is-active {
  border-color: var(--orange);
  box-shadow: 0 18px 40px rgba(15, 39, 66, 0.12);
  transform: translateY(-2px);
}

.logo-wall img {
  width: min(100%, 200px);
  height: 64px;
  object-fit: contain;
}

.brand-detail-panel {
  margin-top: 26px;
}

.brand-profile {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: 28px;
  align-items: center;
  padding: clamp(24px, 4vw, 42px);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 20px 50px rgba(15, 39, 66, 0.08);
}

.brand-profile[hidden] {
  display: none;
}

.brand-profile-head {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  padding-right: 26px;
  border-right: 1px solid var(--line);
}

.brand-profile-head img {
  width: 150px;
  height: 78px;
  object-fit: contain;
}

.brand-profile-head span {
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-profile-head h3 {
  margin: 8px 0 0;
  color: var(--navy);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.08;
}

.brand-profile > p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.brand-info-grid {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.brand-info-grid div {
  padding: 20px;
  border-radius: 8px;
  background: var(--paper);
}

.brand-info-grid strong {
  display: block;
  color: var(--navy);
  font-size: 15px;
}

.brand-info-grid ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.brand-info-grid li {
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--white);
  color: #314357;
  font-size: 13px;
  font-weight: 800;
}

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

.application-grid article {
  min-height: 220px;
  padding: 24px;
  border-radius: 8px;
  background:
    linear-gradient(160deg, rgba(15, 39, 66, 0.92), rgba(22, 58, 92, 0.9)),
    url("assets/industrial-procurement-hero.webp") center / cover;
  color: var(--white);
}

.application-grid strong {
  display: block;
  margin-top: 34px;
  font-size: 23px;
}

.application-grid p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.78);
}

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

.why-grid article {
  padding: 28px;
  border-radius: 8px;
  background: var(--white);
}

.why-grid h3,
.news-grid h3 {
  margin: 12px 0 8px;
  color: var(--navy);
  font-size: 22px;
  line-height: 1.25;
}

.why-grid p,
.news-grid p,
.about-section p,
.contact-section p,
.quote-section p {
  margin: 0;
  color: var(--muted);
}

.about-section {
  padding: 108px 20px;
  background: var(--navy);
  color: var(--white);
}

.about-inner,
.quote-inner,
.contact-grid {
  width: min(1200px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: clamp(34px, 7vw, 96px);
  align-items: start;
}

.about-section h2,
.quote-section h2 {
  color: var(--white);
}

.about-section p,
.quote-section p {
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 18px;
}

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

.culture-row span {
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 800;
}

.about-panel {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.18);
}

.about-panel div {
  padding: 24px;
  background: rgba(255, 255, 255, 0.96);
  color: var(--navy);
}

.about-panel strong {
  display: block;
  margin-top: 6px;
  font-size: 20px;
  line-height: 1.3;
}

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

.news-grid article {
  min-height: 250px;
  padding: 28px;
  border-radius: 8px;
  background: var(--paper);
}

.quote-section {
  padding: 96px 20px;
  background: linear-gradient(135deg, var(--navy), var(--navy-2));
}

.quote-form {
  display: grid;
  gap: 14px;
  padding: 26px;
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.quote-form label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-weight: 900;
}

.quote-form input,
.quote-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 13px;
  background: #fbfcfd;
  color: var(--ink);
  font: inherit;
}

.quote-form textarea {
  resize: vertical;
}

.contact-section {
  padding: 96px 20px;
}

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

.contact-list a,
.contact-list div {
  display: block;
  padding: 22px;
  border-radius: 8px;
  background: var(--paper);
}

.contact-list strong {
  display: block;
  margin-top: 5px;
  color: var(--navy);
  font-size: 20px;
}

.footer {
  padding: 50px clamp(20px, 6vw, 88px) 28px;
  background: #081a2d;
  color: var(--white);
}

.footer > div:first-child {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
}

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

.footer-cols div {
  display: grid;
  gap: 8px;
}

.footer-cols span {
  color: var(--orange);
  font-weight: 900;
}

.footer-cols a,
.legal {
  color: rgba(255, 255, 255, 0.72);
}

.legal {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 13px;
}

@media (max-width: 1100px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav {
    order: 3;
    grid-column: 1 / -1;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero-grid,
  .intro-strip,
  .about-inner,
  .quote-inner,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-spec {
    grid-template-columns: repeat(3, 1fr);
  }

  .logo-wall,
  .application-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .brand-profile {
    grid-template-columns: 1fr;
  }

  .brand-profile-head {
    grid-template-columns: 130px minmax(0, 1fr);
    padding-right: 0;
    padding-bottom: 22px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .brand-profile-head img {
    width: 130px;
  }
}

@media (max-width: 760px) {
  .site-header {
    padding: 12px 16px;
    gap: 12px;
  }

  .brand small {
    display: none;
  }

  .brand strong {
    font-size: 14px;
  }

  .header-action {
    min-height: 38px;
    padding: 0 12px;
    font-size: 13px;
  }

  .nav {
    font-size: 13px;
    gap: 16px;
  }

  .hero-grid {
    padding: 132px 18px 48px;
  }

  .hero-spec,
  .solution-grid,
  .logo-wall,
  .brand-profile,
  .brand-info-grid,
  .application-grid,
  .why-grid,
  .news-grid,
  .footer-cols {
    grid-template-columns: 1fr;
  }

  .brand-logo-card {
    min-height: 96px;
  }

  .brand-profile-head {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .brand-profile-head img {
    width: 150px;
    justify-self: start;
  }

  .section {
    width: calc(100% - 32px);
    padding: 68px 0;
  }

  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 34px;
  }

  .solution-card h3 {
    font-size: 24px;
  }

  .about-section,
  .quote-section,
  .contact-section {
    padding: 68px 16px;
  }

  .footer > div:first-child {
    display: grid;
  }
}