:root {
  --ink: #17201f;
  --muted: #5f6c68;
  --line: #d8dfdc;
  --paper: #ffffff;
  --soft: #f4f7f5;
  --deep: #17443c;
  --deep-2: #226156;
  --accent: #b5242a;
  --gold: #c28a32;
  --steel: #536b7a;
  --shadow: 0 18px 50px rgba(23, 32, 31, 0.12);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--accent);
  font-size: 15px;
  line-height: 1;
}

.brand small {
  display: block;
  color: var(--muted);
  font-weight: 500;
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
  color: #2d3936;
}

.nav-links a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  border-color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-size: 22px;
}

.hero {
  min-height: 78vh;
  display: flex;
  align-items: flex-end;
  position: relative;
  color: #fff;
  background-image: linear-gradient(90deg, rgba(17, 31, 29, 0.9), rgba(17, 31, 29, 0.6), rgba(17, 31, 29, 0.18)), var(--hero-image);
  background-size: cover;
  background-position: center;
}

.hero-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 120px 0 88px;
}

.eyebrow {
  color: var(--gold);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1 {
  margin: 14px 0 20px;
  max-width: 920px;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero p {
  margin: 0;
  max-width: 840px;
  font-size: 19px;
  color: rgba(255, 255, 255, 0.9);
}

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

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  border-radius: 4px;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.46);
}

.section {
  padding: 76px 0;
}

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

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.section-head {
  margin-bottom: 34px;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 0.55fr);
  gap: 48px;
  align-items: end;
}

.section-head h2 {
  margin: 8px 0 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
  letter-spacing: 0;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 18px;
}

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

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

.grid.cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.32;
}

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

.stat {
  border-left: 4px solid var(--accent);
}

.stat strong {
  display: block;
  font-size: 30px;
  line-height: 1.1;
  color: var(--deep);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.tag {
  padding: 7px 10px;
  border-radius: 4px;
  background: #e8efec;
  color: #233d38;
  font-size: 13px;
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.75fr);
  gap: 42px;
  align-items: center;
}

.media-frame {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

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

.caption {
  padding: 12px 14px;
  font-size: 13px;
  color: var(--muted);
  background: #fff;
}

.product-grid .card,
.industry-grid .card {
  min-height: 210px;
}

.feature-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  padding-left: 18px;
  position: relative;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 7px;
  height: 7px;
  background: var(--accent);
}

.page-hero {
  padding: 86px 0 68px;
  color: #fff;
  background: var(--deep);
}

.page-hero p {
  max-width: 860px;
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
}

.content-block {
  max-width: 900px;
}

.content-block h2 {
  margin: 42px 0 12px;
  font-size: 30px;
  line-height: 1.25;
}

.content-block p {
  color: #34413e;
}

.content-block strong {
  color: var(--deep);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: #eaf0ed;
  color: var(--deep);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.case-tile {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.case-tile img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.case-tile span {
  display: block;
  padding: 9px 10px;
  font-size: 13px;
  color: #3d4b48;
}

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

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 0 18px;
}

summary {
  cursor: pointer;
  padding: 18px 0;
  font-weight: 800;
}

details p {
  margin: 0 0 18px;
  color: var(--muted);
}

.contact-band {
  color: #fff;
  background: var(--deep);
}

.contact-band .section-head p,
.contact-band .eyebrow {
  color: rgba(255, 255, 255, 0.78);
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.contact-item {
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
}

.contact-item strong {
  display: block;
  margin-bottom: 8px;
  color: #fff;
}

.site-footer {
  background: #101816;
  color: rgba(255, 255, 255, 0.72);
  padding: 34px 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.keywords {
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  margin-top: 34px;
  padding-top: 18px;
}

@media (max-width: 920px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 20px 22px;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }

  .nav-links.open {
    display: flex;
  }

  .section-head,
  .split,
  .grid.cols-2,
  .grid.cols-3,
  .grid.cols-4,
  .contact-list,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .hero {
    min-height: 700px;
  }
}

@media (max-width: 560px) {
  .nav-wrap,
  .container,
  .hero-inner {
    width: min(100% - 28px, 1180px);
  }

  .hero-inner {
    padding-bottom: 62px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 36px;
  }

  .section {
    padding: 56px 0;
  }

  .card {
    padding: 20px;
  }

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