:root {
  --bg: #f3f4f3;
  --surface: #ffffff;
  --surface-soft: #f2f6f3;
  --surface-strong: #e5efe9;
  --text: #1b2325;
  --text-soft: #5b666a;
  --line: #dde4e1;
  --primary: #1f5f52;
  --primary-deep: #153d38;
  --primary-soft: rgba(31, 95, 82, 0.12);
  --accent: #d9b26b;
  --dark: #101a1d;
  --shadow: 0 24px 48px rgba(16, 26, 29, 0.08);
  --radius: 18px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

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

.section-spacing {
  padding: 90px 0;
}

.eyebrow {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(31, 95, 82, 0.12);
  color: var(--primary-deep);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}

.eyebrow-dark {
  background: rgba(16, 26, 29, 0.06);
  color: var(--text);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(16, 26, 29, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: white;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #3d8a77);
  color: white;
  box-shadow: 0 12px 30px rgba(31, 95, 82, 0.35);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: rgba(255, 255, 255, 0.74);
  font-weight: 500;
}

.main-nav a {
  position: relative;
  padding: 8px 0;
}

.main-nav a.active,
.main-nav a:hover {
  color: white;
}

.main-nav a.active::after,
.main-nav a:hover::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 999px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 12px;
  padding: 14px 24px;
  min-height: 48px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: white;
  box-shadow: 0 20px 30px rgba(31, 95, 82, 0.22);
}

.button-secondary {
  border: 1px solid rgba(16, 26, 29, 0.12);
  background: white;
  color: var(--text);
}

.button.small {
  padding: 10px 18px;
  min-height: 42px;
  font-size: 0.95rem;
}

.button-full {
  width: 100%;
}

.hero {
  padding: 70px 0 46px;
  background:
    radial-gradient(circle at top left, rgba(31, 95, 82, 0.12), transparent 30%),
    linear-gradient(180deg, #f5f6f4 0%, #eff4f2 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
}

.hero-copy h1 {
  margin: 20px 0 18px;
  font-size: clamp(2.4rem, 4vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: -0.06em;
  color: var(--dark);
}

.hero-copy p {
  margin: 0;
  max-width: 620px;
  color: var(--text-soft);
  font-size: 1.06rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}

.trust-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 18px 22px;
  padding: 0;
  margin: 28px 0 0;
  color: var(--text-soft);
  font-weight: 600;
}

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

.trust-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 1.5rem;
  line-height: 1;
}

.product-showcase {
  position: relative;
  min-height: 520px;
  background: linear-gradient(135deg, #edf4f2, #f7f9f8);
  border: 1px solid rgba(16, 26, 29, 0.06);
  border-radius: 30px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.product-showcase img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.02);
}

.floating-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(16, 26, 29, 0.08);
  border-radius: 14px;
  padding: 14px 18px;
  box-shadow: 0 16px 30px rgba(16, 26, 29, 0.08);
  backdrop-filter: blur(10px);
}

.floating-card span {
  display: block;
  color: var(--text-soft);
  font-size: 0.72rem;
  margin-bottom: 4px;
}

.floating-card strong {
  font-size: 0.96rem;
}

.card-one {
  top: 34px;
  left: 28px;
}

.card-two {
  right: 26px;
  bottom: 26px;
}

.logo-bar {
  padding: 18px 0 8px;
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  padding: 18px 14px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(16, 26, 29, 0.06);
  border-radius: 16px;
  color: rgba(16, 26, 29, 0.72);
  font-weight: 700;
  text-align: center;
}

.section-header {
  margin-bottom: 28px;
}

.section-header h2 {
  margin: 16px 0 0;
  font-size: clamp(2rem, 2.5vw, 2.8rem);
  letter-spacing: -0.05em;
}

.split-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.text-link {
  color: var(--primary-deep);
  font-weight: 700;
}

.category-grid,
.benefit-grid,
.factory-stats,
.process-grid,
.applications-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.category-card,
.benefit-card,
.info-card,
.stat-card,
.process-item,
.app-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius);
  border: 1px solid rgba(16, 26, 29, 0.06);
  box-shadow: 0 18px 32px rgba(16, 26, 29, 0.04);
}

.category-card {
  padding: 28px 22px;
}

.category-card .icon,
.benefit-icon {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--surface-soft);
  font-size: 1.55rem;
}

.category-card h3,
.benefit-card h3,
.stat-card h3,
.app-card h3,
.process-item h3 {
  margin: 16px 0 10px;
  font-size: 1.28rem;
}

.category-card p,
.benefit-card p,
.about-content p,
.contact-panel li,
.info-card li,
.stat-card p,
.app-card p,
.process-item p {
  margin: 0;
  color: var(--text-soft);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  overflow: hidden;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(16, 26, 29, 0.06);
  border-radius: 20px;
  box-shadow: 0 18px 36px rgba(16, 26, 29, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 50px rgba(16, 26, 29, 0.09);
}

.product-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.product-card-body {
  padding: 22px 20px 20px;
}

.product-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.product-tag {
  display: inline-block;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(31, 95, 82, 0.12);
  color: var(--primary-deep);
  font-size: 0.74rem;
  font-weight: 700;
}

.product-price {
  color: var(--primary-deep);
  font-weight: 800;
  font-size: 1.2rem;
}

.product-card h3 {
  margin: 0 0 6px;
  font-size: 1.28rem;
}

.product-card p {
  margin: 0 0 16px;
  color: var(--text-soft);
}

.product-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.product-card-footer .more-link {
  color: var(--primary-deep);
  font-weight: 700;
}

.factory-stats {
  margin-top: 10px;
}

.stat-card {
  padding: 26px 22px;
}

.stat-card .number {
  display: block;
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.06em;
  color: var(--primary-deep);
}

.factory-overview {
  background: linear-gradient(180deg, #f7f7f5 0%, #f0f3f1 100%);
}

.process-grid,
.applications-grid {
  margin-top: 12px;
}

.process-item,
.app-card {
  padding: 26px 22px;
}

.process-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--dark);
  color: white;
  font-weight: 700;
  margin-bottom: 10px;
}

.cta-band {
  padding-top: 0;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 30px 34px;
  border-radius: 20px;
  background: linear-gradient(135deg, #1a2b2b, #0f1d1f);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.cta-inner h2 {
  margin: 12px 0 0;
  color: white;
  font-size: clamp(2rem, 2.5vw, 2.5rem);
  letter-spacing: -0.05em;
}

.cta-inner .eyebrow {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.site-footer {
  background: #0e1618;
  color: rgba(255, 255, 255, 0.75);
  padding-top: 52px;
}

.footer-wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 30px;
  padding-bottom: 26px;
}

.site-footer h4 {
  margin: 0 0 16px;
  color: white;
  font-size: 1.08rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px 0 26px;
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
}

.page-hero {
  padding: 72px 0 0;
  background: linear-gradient(180deg, #f6f7f4 0%, #f2f4f2 100%);
}

.narrow {
  max-width: 760px;
}

.small-hero h1 {
  margin: 16px 0 0;
  font-size: clamp(2.1rem, 3vw, 3.4rem);
  letter-spacing: -0.05em;
  line-height: 1.1;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.filter-button {
  border: 1px solid rgba(16, 26, 29, 0.08);
  background: white;
  color: var(--text-soft);
  padding: 10px 16px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.filter-button.active {
  background: var(--dark);
  color: white;
  border-color: var(--dark);
}

.product-detail {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(16, 26, 29, 0.05);
  border-radius: 22px;
  padding: 28px;
  box-shadow: 0 20px 44px rgba(16, 26, 29, 0.04);
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 32px;
}

.product-detail-grid img {
  width: 100%;
  border-radius: 18px;
  min-height: 440px;
  object-fit: cover;
}

.product-detail .product-tag {
  display: inline-flex;
  margin-bottom: 18px;
}

.product-detail h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 3vw, 3rem);
  letter-spacing: -0.05em;
}

.product-detail .price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-deep);
  margin: 8px 0 18px;
}

.spec-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 24px;
  padding: 0;
  list-style: none;
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  color: var(--text-soft);
}

.spec-list strong {
  color: var(--text);
}

.product-description {
  margin-top: 14px;
  color: var(--text-soft);
}

.content-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: start;
}

.content-grid h2 {
  margin-top: 0;
  margin-bottom: 18px;
  font-size: clamp(2rem, 2.5vw, 2.7rem);
  letter-spacing: -0.05em;
}

.info-card {
  padding: 28px 24px;
}

.info-card h3 {
  margin-top: 0;
  margin-bottom: 18px;
}

.info-card ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 28px;
}

.contact-form-wrap,
.contact-panel {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(16, 26, 29, 0.05);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 20px 38px rgba(16, 26, 29, 0.04);
}

.contact-form {
  display: grid;
  gap: 18px;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--text);
  font-weight: 600;
}

input,
select,
textarea {
  width: 100%;
  background: #f6f8f7;
  border: 1px solid rgba(16, 26, 29, 0.08);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--text);
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid rgba(31, 95, 82, 0.18);
  border-color: rgba(31, 95, 82, 0.3);
}

.form-success {
  min-height: 24px;
  margin: 12px 0 0;
  font-weight: 700;
  color: var(--primary-deep);
}

.contact-panel h3 {
  margin-top: 0;
  margin-bottom: 18px;
}

.contact-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

@media (max-width: 980px) {
  .hero-grid,
  .content-grid,
  .contact-grid,
  .product-detail-grid,
  .footer-wrap,
  .category-grid,
  .benefit-grid,
  .factory-stats,
  .process-grid,
  .applications-grid,
  .product-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-grid,
  .content-grid,
  .contact-grid,
  .product-detail-grid,
  .footer-wrap {
    grid-template-columns: 1fr;
  }

  .main-nav {
    display: none;
  }
}

@media (max-width: 640px) {
  .category-grid,
  .benefit-grid,
  .factory-stats,
  .process-grid,
  .applications-grid,
  .product-grid,
  .field-row,
  .logo-grid {
    grid-template-columns: 1fr;
  }

  .section-spacing {
    padding: 72px 0;
  }

  .cta-inner,
  .split-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .product-showcase,
  .product-showcase img {
    min-height: 360px;
  }

  .button {
    width: 100%;
  }
}