:root {
  --green: #2E8B57;
  --deep-green: #145A36;
  --soft-green: #F4FAF6;
  --orange: #F58A1F;
  --text: #26332C;
  --muted: #6B7A70;
  --line: #DDE8E1;
  --white: #FFFFFF;
  --shadow: 0 14px 30px rgba(20, 90, 54, 0.11);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
img { max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.topbar, .nav, .section, .hero, .page-hero, .contact-band, .site-footer {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0 12px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 260px; }
.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, var(--deep-green), var(--green));
  font-weight: 800;
  letter-spacing: 0;
}
.brand strong { display: block; font-size: 17px; line-height: 1.3; }
.brand em { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; font-style: normal; letter-spacing: 0.08em; }
.topbar-actions, .hero-actions, .contact-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.phone-text { color: var(--deep-green); font-weight: 700; }
.nav { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 0 12px; }
.nav a { min-width: 88px; padding: 9px 16px; border-radius: 8px; color: var(--muted); text-align: center; font-weight: 700; }
.nav a:hover, .nav a.active { color: var(--deep-green); background: var(--soft-green); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 800;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: var(--white); background: var(--orange); box-shadow: 0 10px 22px rgba(245, 138, 31, 0.22); }
.btn-outline { color: var(--deep-green); background: var(--white); border-color: rgba(46, 139, 87, 0.35); }
.btn-light { color: var(--deep-green); background: var(--white); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 36px;
  align-items: center;
  min-height: 540px;
  padding: 52px 0 44px;
}
.hero h1, .page-hero h1 { margin: 0; color: var(--deep-green); font-size: 56px; line-height: 1.12; letter-spacing: 0; }
.hero-subtitle { margin: 18px 0 8px; font-size: 25px; color: var(--text); font-weight: 800; }
.hero-copy { margin: 0 0 22px; color: var(--muted); font-size: 18px; }
.eyebrow { margin: 0 0 8px; color: var(--green); font-size: 13px; font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase; }
.tag-row, .mini-list, .product-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.tag-row span, .mini-list span, .static-tags span, .product-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 12px;
  border-radius: 999px;
  color: var(--deep-green);
  background: #EAF5EE;
  font-size: 13px;
  font-weight: 800;
}
.hero-panel { min-height: 390px; border: 1px solid rgba(46, 139, 87, 0.16); box-shadow: var(--shadow); }
.hero-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 480px;
  object-fit: contain;
  border: 1px solid rgba(46, 139, 87, 0.16);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}
.placeholder-media {
  display: grid;
  place-items: center;
  overflow: hidden;
  position: relative;
  min-height: 210px;
  border-radius: 8px;
  color: rgba(20, 90, 54, 0.72);
  background: linear-gradient(135deg, rgba(46, 139, 87, 0.22), rgba(244, 250, 246, 0.9)), repeating-linear-gradient(45deg, rgba(20, 90, 54, 0.08) 0 10px, rgba(255, 255, 255, 0.18) 10px 20px);
  font-weight: 800;
}
.placeholder-media span { padding: 10px 16px; border-radius: 8px; background: rgba(255, 255, 255, 0.68); }
.product-media { background: radial-gradient(circle at 82% 20%, rgba(245, 138, 31, 0.18), transparent 28%), linear-gradient(135deg, #DDF0E5 0%, #F8FCF9 48%, #CFE7D8 100%); }
.delivery-media { min-height: 180px; background: linear-gradient(135deg, rgba(245, 138, 31, 0.18), rgba(46, 139, 87, 0.2)), linear-gradient(160deg, #F9FCFA, #D8EBDD); }

.section { padding: 56px 0; }
.soft { width: 100%; max-width: none; padding-left: max(20px, calc((100% - 1180px) / 2)); padding-right: max(20px, calc((100% - 1180px) / 2)); background: var(--soft-green); }
.section-head { margin-bottom: 24px; }
.section-head h2, .contact-band h2, .contact-info h2, .message-form h2 { margin: 0; color: var(--deep-green); font-size: 30px; line-height: 1.25; letter-spacing: 0; }
.row-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; }
.text-link { color: var(--green); font-weight: 900; }
.quick-grid, .product-grid, .delivery-grid, .video-grid, .category-grid, .case-grid, .advantage-grid { display: grid; gap: 18px; }
.quick-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.category-grid { grid-template-columns: repeat(7, minmax(0, 1fr)); }
.product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.delivery-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.delivery-grid.large, .video-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.case-grid, .advantage-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.quick-card, .info-card, .product-card, .scene-card, .video-card, .contact-info, .message-form, .poster-figure {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 24px rgba(20, 90, 54, 0.06);
}
.quick-card, .info-card { padding: 22px; }
.quick-card strong, .info-card strong { display: block; color: var(--deep-green); font-size: 20px; }
.quick-card span, .product-card p, .scene-card p, .video-card p, .info-card p, .page-hero p, .form-note, .split-copy p, .poster-figure figcaption { color: var(--muted); }
.info-card p { margin: 10px 0 0; }
.category-grid a, .filter-bar button, .static-tags span {
  border: 1px solid rgba(46, 139, 87, 0.18);
  border-radius: 8px;
  background: var(--white);
  color: var(--deep-green);
  font-weight: 900;
}
.category-grid a { display: grid; min-height: 74px; place-items: center; padding: 12px; text-align: center; }
.product-card { display: flex; min-height: 100%; flex-direction: column; overflow: hidden; }
.product-card .placeholder-media { min-height: 190px; border-radius: 8px 8px 0 0; }
.product-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  border-radius: 18px 18px 0 0;
}
.product-detail-image {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  display: block;
  border-radius: 24px;
}
.product-card-body { display: flex; flex: 1; flex-direction: column; gap: 10px; padding: 18px; }
.product-card h3, .scene-card h3, .video-card h3 { margin: 0; color: var(--deep-green); font-size: 20px; line-height: 1.35; }
.product-card p, .scene-card p, .video-card p { margin: 0; }
.product-meta { margin-top: auto; color: var(--orange); font-weight: 900; }
.card-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.scene-card, .video-card { overflow: hidden; }
.scene-card h3, .scene-card p, .scene-card .card-actions, .video-card h3, .video-card p, .video-card .card-actions, .video-card .video-status { margin-left: 18px; margin-right: 18px; }
.scene-card h3, .video-card h3 { margin-top: 16px; }
.scene-card p, .video-card p { margin-top: 8px; }
.scene-card .card-actions, .video-card .card-actions { margin-top: 16px; margin-bottom: 18px; }
.video-status { display: inline-flex; margin-top: 12px; padding: 4px 10px; border-radius: 999px; background: #FFF5EA; color: #A6570C; font-size: 13px; font-weight: 800; }

.split-section { display: grid; grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1.18fr); gap: 28px; align-items: center; }
.split-copy h2 { margin: 0 0 12px; color: var(--deep-green); font-size: 30px; line-height: 1.25; }
.module-image, .advantage-poster, .video-cover-image {
  display: block;
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
  background: var(--white);
}
.contain-image { height: auto; object-fit: contain; }
.poster-figure { margin: 0; padding: 18px; }
.poster-figure figcaption { margin-top: 14px; text-align: center; font-weight: 700; }
.video-cover-image { aspect-ratio: 16 / 9; object-fit: contain; border-radius: 8px 8px 0 0; box-shadow: none; }
.video-player { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; border-radius: 8px 8px 0 0; background: #000; }

.contact-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 58px; padding: 30px; border-radius: 8px; color: var(--white); background: linear-gradient(135deg, var(--deep-green), var(--green)); }
.contact-band h2, .contact-band .eyebrow, .contact-band p { color: var(--white); }
.page-hero { padding: 64px 0 38px; }
.page-hero h1 { font-size: 44px; }
.page-hero p:last-child { max-width: 760px; margin: 12px 0 0; font-size: 18px; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.filter-bar button { min-height: 38px; padding: 8px 14px; cursor: pointer; }
.filter-bar button.active { color: var(--white); background: var(--green); }

.product-detail-hero { display: grid; grid-template-columns: minmax(280px, 0.92fr) minmax(0, 1.08fr); gap: 34px; align-items: center; padding: 52px 0; }
.product-detail-hero .placeholder-media { min-height: 430px; }
.detail-copy h1 { margin: 0 0 12px; color: var(--deep-green); font-size: 42px; line-height: 1.2; }
.detail-copy p { color: var(--muted); font-size: 18px; }
.product-tags { margin: 14px 0 18px; }
.detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; padding-bottom: 58px; }
.detail-box { padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); }
.detail-box h2 { margin: 0 0 14px; color: var(--deep-green); font-size: 24px; }
.detail-box ul { margin: 0; padding-left: 20px; color: var(--muted); }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { padding: 12px 10px; border-bottom: 1px solid var(--line); text-align: left; }
.spec-table th { width: 34%; color: var(--deep-green); }

.contact-layout { display: grid; grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr); gap: 22px; }
.contact-info, .message-form { padding: 26px; }
.contact-info dl { display: grid; gap: 14px; margin: 22px 0; }
.contact-info dl div { display: grid; grid-template-columns: 70px 1fr; gap: 10px; }
.contact-info dt { color: var(--muted); }
.contact-info dd { margin: 0; color: var(--deep-green); font-weight: 900; }
.qr-placeholder { display: grid; width: 160px; height: 160px; place-items: center; margin-bottom: 18px; border: 1px dashed rgba(46, 139, 87, 0.4); border-radius: 8px; color: var(--muted); text-align: center; background: var(--soft-green); font-weight: 800; }
.message-form { display: grid; gap: 16px; }
.message-form label { display: grid; gap: 7px; color: var(--deep-green); font-weight: 900; }
.message-form input, .message-form textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 11px 12px; color: var(--text); background: #FBFDFC; outline: none; }
.message-form input:focus, .message-form textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(46, 139, 87, 0.12); }
.form-note { margin: 0; font-size: 14px; }
.site-footer { display: grid; gap: 4px; padding: 28px 0 38px; border-top: 1px solid var(--line); color: var(--muted); text-align: center; }
.site-footer strong { color: var(--deep-green); }
.site-footer p { margin: 0; }
.toast { position: fixed; left: 50%; bottom: 26px; z-index: 50; min-width: 220px; max-width: min(420px, calc(100% - 32px)); padding: 12px 18px; border-radius: 8px; color: var(--white); background: rgba(20, 90, 54, 0.94); text-align: center; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transform: translate(-50%, 14px); transition: opacity 0.2s ease, transform 0.2s ease; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 980px) {
  .hero, .product-detail-hero, .contact-layout, .split-section { grid-template-columns: 1fr; }
  .quick-grid, .category-grid, .delivery-grid.large, .video-grid, .case-grid, .advantage-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-grid, .delivery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { min-height: auto; }
}
@media (max-width: 768px) {
  .topbar, .nav, .section, .hero, .page-hero, .contact-band, .site-footer { width: min(100% - 28px, 1180px); }
  .topbar { align-items: flex-start; flex-direction: column; }
  .brand { min-width: 0; }
  .topbar-actions, .phone-text { width: 100%; }
  .nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nav a { min-width: 0; }
  .hero h1 { font-size: 42px; }
  .hero-subtitle { font-size: 21px; }
  .page-hero h1, .detail-copy h1 { font-size: 34px; }
  .section { padding: 42px 0; }
  .soft { padding-left: 14px; padding-right: 14px; }
  .quick-grid, .category-grid, .product-grid, .delivery-grid, .delivery-grid.large, .video-grid, .detail-grid, .case-grid, .advantage-grid { grid-template-columns: 1fr; }
  .contact-band, .row-head { align-items: flex-start; flex-direction: column; }
  .btn { width: 100%; }
  .card-actions .btn, .hero-actions .btn, .contact-actions .btn { width: auto; }
}
@media (max-width: 420px) {
  .brand strong { font-size: 15px; }
  .brand-mark { width: 42px; height: 42px; }
  .hero h1 { font-size: 36px; }
  .section-head h2, .contact-band h2, .contact-info h2, .message-form h2, .split-copy h2 { font-size: 26px; }
}
.language-switch {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 4px;
  padding: 3px;
  border: 1px solid rgba(46, 139, 87, 0.24);
  border-radius: 8px;
  background: var(--soft-green);
}

.lang-btn {
  min-width: 44px;
  min-height: 32px;
  padding: 5px 10px;
  border: 0;
  border-radius: 6px;
  color: var(--deep-green);
  background: transparent;
  cursor: pointer;
  font-weight: 900;
  line-height: 1.2;
}

.lang-btn.active {
  color: var(--white);
  background: var(--green);
}

@media (max-width: 768px) {
  .language-switch {
    width: auto;
    max-width: 100%;
  }

  .lang-btn {
    width: auto;
  }
}
.advantage-showcase {
  position: relative;
  overflow: hidden;
  min-height: 430px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(0deg, rgba(244, 250, 246, 0.88), rgba(244, 250, 246, 0.88)),
    url('../assets/posters/enterprise-advantages.jpg') center / cover no-repeat;
  box-shadow: 0 10px 24px rgba(20, 90, 54, 0.08);
}

.advantage-showcase::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(20, 90, 54, 0.26), rgba(255, 255, 255, 0.74));
  backdrop-filter: blur(3px);
}

.advantage-overlay {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  align-items: stretch;
  min-height: 430px;
  padding: 28px;
}

.advantage-card {
  display: flex;
  min-height: 210px;
  flex-direction: column;
  justify-content: flex-end;
  padding: 22px;
  border: 1px solid rgba(46, 139, 87, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 24px rgba(20, 90, 54, 0.10);
}

.advantage-card strong {
  color: var(--deep-green);
  font-size: 21px;
  line-height: 1.25;
}

.advantage-card p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.62;
}

@media (max-width: 980px) {
  .advantage-overlay {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .advantage-showcase,
  .advantage-overlay {
    min-height: 0;
  }

  .advantage-overlay {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .advantage-card {
    min-height: 0;
  }
}
.application-links {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.application-links article,
.process-grid article,
.inquiry-tips,
.related-products,
.before-inquiry {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 8px 20px rgba(20, 90, 54, 0.06);
}

.application-links article {
  padding: 14px 16px;
}

.application-links strong,
.before-inquiry h3,
.inquiry-tips h2,
.related-products h2 {
  color: var(--deep-green);
}

.application-links p,
.before-inquiry p,
.inquiry-tips p,
.related-card small {
  margin: 6px 0 0;
  color: var(--muted);
}

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

.process-grid article {
  display: grid;
  gap: 10px;
  min-height: 118px;
  padding: 20px;
}

.process-grid span {
  color: var(--orange);
  font-weight: 900;
}

.process-grid strong {
  color: var(--deep-green);
  font-size: 20px;
}

.detail-support {
  display: grid;
  gap: 18px;
  padding-top: 0;
}

.inquiry-tips,
.related-products,
.before-inquiry {
  padding: 22px;
}

.inquiry-tips h2,
.related-products h2,
.before-inquiry h3 {
  margin: 0 0 10px;
}

.inquiry-tips ul,
.before-inquiry ul {
  margin: 10px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.related-card {
  display: grid;
  gap: 8px;
  min-height: 120px;
  padding: 16px;
  border: 1px solid rgba(46, 139, 87, 0.18);
  border-radius: 8px;
  background: var(--soft-green);
}

.related-card span {
  color: var(--deep-green);
  font-weight: 900;
}

.detail-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.before-inquiry {
  margin: 18px 0;
}

@media (max-width: 980px) {
  .process-grid,
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .process-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }
}