:root {
  --ink: #17211f;
  --muted: #5f6b67;
  --line: #dfe6e2;
  --paper: #f4f7f2;
  --white: #ffffff;
  --green: #6f9f87;
  --green-dark: #3f6d5c;
  --green-ink: #154634;
  --morandi: #cbdccd;
  --morandi-light: #e8f0e8;
  --blue: #6f91ad;
  --gold: #c88728;
  --coral: #d85f45;
  --shadow: 0 18px 55px rgba(23, 33, 31, 0.12);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 15px clamp(18px, 4vw, 56px);
  background: rgba(247, 247, 242, 0.93);
  border-bottom: 1px solid rgba(223, 230, 226, 0.9);
  backdrop-filter: blur(16px);
}

.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 230px; }
.brand-mark {
  position: relative;
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  color: var(--green-ink);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.92), rgba(255,255,255,0.55)),
    var(--morandi);
  border: 1px solid rgba(63, 109, 92, 0.28);
  border-radius: 14px;
  font-weight: 900;
  box-shadow: 0 12px 26px rgba(63, 109, 92, 0.16);
  overflow: hidden;
}
.brand-mark::before {
  position: absolute;
  inset: 9px;
  border: 2px solid rgba(63, 109, 92, 0.5);
  border-radius: 50%;
  content: "";
}
.logo-l,
.logo-y {
  position: absolute;
  z-index: 1;
  font-size: 1rem;
  line-height: 1;
}
.logo-l { left: 13px; top: 13px; }
.logo-y { right: 12px; bottom: 12px; }
.brand strong, .brand small { display: block; }
.brand strong { color: var(--green-ink); font-size: 1.05rem; }
.brand small { margin-top: 2px; color: var(--muted); font-size: 0.76rem; }

.main-nav { display: flex; justify-content: flex-end; gap: clamp(12px, 1.7vw, 24px); color: var(--muted); font-size: 0.93rem; }
.main-nav a:hover, .main-nav a.active { color: var(--green-ink); }

.header-cta, .primary-button, .secondary-button, .inquiry-form button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 18px; border: 1px solid transparent;
  border-radius: 7px; font-weight: 800; white-space: nowrap;
}
.header-cta, .primary-button, .inquiry-form button {
  color: var(--white); background: var(--green-dark); box-shadow: 0 10px 24px rgba(63, 109, 92, 0.2);
}
.secondary-button { color: var(--green-ink); background: rgba(255, 255, 255, 0.88); border-color: rgba(63, 109, 92, 0.24); }

.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 7px; background: var(--white); }
.nav-toggle span { display: block; width: 18px; height: 2px; margin: 5px auto; background: var(--ink); }

.hero {
  position: relative;
  min-height: calc(100vh - 73px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(62px, 8vw, 116px) clamp(18px, 6vw, 76px);
  overflow: hidden;
  background: var(--morandi);
}
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-shade {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(232, 240, 232, 0.9), rgba(203, 220, 205, 0.84)),
    linear-gradient(90deg, rgba(203, 220, 205, 0.88), rgba(232, 240, 232, 0.52));
}
.hero-content { position: relative; max-width: 980px; color: var(--green-ink); }
.hero-centered { text-align: center; }
.eyebrow {
  margin: 0 0 14px; color: var(--green-dark); font-size: 0.78rem;
  font-weight: 850; letter-spacing: 0.08em; text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 22px; font-size: clamp(3.2rem, 7.4vw, 7.4rem); line-height: 0.91; letter-spacing: 0; }
h2 { margin-bottom: 18px; font-size: clamp(2rem, 4vw, 4rem); line-height: 1; letter-spacing: 0; }
h3 { margin-bottom: 9px; font-size: 1.08rem; }
.split-title {
  display: grid;
  justify-items: center;
  gap: clamp(12px, 1.9vw, 24px);
  line-height: 1;
  color: #5a907c;
}
.split-title strong {
  color: #1b5540;
  font-weight: 920;
}
.split-title span {
  display: block;
  max-width: 100%;
  white-space: nowrap;
  font-size: clamp(2.7rem, 6vw, 5.8rem);
  font-weight: 500;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
.hero-copy { max-width: 720px; margin-inline: auto; color: var(--green-ink); font-size: clamp(1.18rem, 2vw, 1.7rem); line-height: 1.35; }
.hero-actions { display: flex; flex-wrap: nowrap; justify-content: center; gap: 12px; margin-top: 32px; }

.advantage-strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--white); border-bottom: 1px solid var(--line);
}
.advantage-strip div { padding: 24px clamp(18px, 4vw, 42px); border-right: 1px solid var(--line); }
.advantage-strip strong { display: block; color: var(--green); font-size: clamp(2rem, 3vw, 3.2rem); line-height: 1; }
.advantage-strip span { display: block; margin-top: 8px; color: var(--muted); }

.section { padding: clamp(60px, 8vw, 112px) clamp(18px, 6vw, 76px); }
.page-hero {
  padding: clamp(70px, 9vw, 128px) clamp(18px, 6vw, 76px) clamp(48px, 7vw, 82px);
  background:
    linear-gradient(120deg, rgba(232, 240, 232, 0.94), rgba(203, 220, 205, 0.78)),
    var(--morandi);
}
.page-hero h1 {
  max-width: 950px;
  color: var(--green-ink);
  font-size: clamp(2.8rem, 6vw, 5.8rem);
}
.page-hero p:not(.eyebrow) {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.18rem;
  line-height: 1.55;
}
.section-heading {
  display: grid; grid-template-columns: minmax(260px, 0.78fr) minmax(260px, 0.52fr);
  gap: 34px; align-items: end; margin-bottom: 34px;
}
.compact-heading {
  grid-template-columns: 1fr;
  max-width: 760px;
}
.section-heading .eyebrow { grid-column: 1 / -1; margin-bottom: -18px; color: var(--green); }
.section-heading p:not(.eyebrow), .intro-copy p, .yiwu-copy p, .contact-copy p, .visit-panel p {
  color: var(--muted); line-height: 1.65;
}

.intro { display: grid; grid-template-columns: minmax(290px, 0.85fr) minmax(330px, 0.82fr); gap: clamp(28px, 6vw, 80px); align-items: center; background: var(--white); }
.intro .eyebrow, .products .eyebrow, .yiwu .eyebrow, .qaq .eyebrow, .contact .eyebrow, .visit .eyebrow { color: var(--green); }
.fee-note { padding: 16px 18px; border-left: 4px solid var(--gold); background: #fbf4e9; font-weight: 750; }
.intro-image { border-radius: 8px; box-shadow: var(--shadow); }

.workflow { padding: 28px clamp(18px, 6vw, 76px); color: var(--green-ink); background: var(--morandi-light); overflow: hidden; }
.workflow-track { display: grid; grid-template-columns: repeat(8, minmax(132px, 1fr)); gap: 10px; }
.workflow-track span {
  position: relative; display: flex; min-height: 68px; align-items: center; justify-content: center;
  padding: 10px 18px; border: 1px solid rgba(63,109,92,0.18); border-radius: 7px; text-align: center; font-weight: 760; background: rgba(255,255,255,0.55);
}
.workflow-track span::after { content: "›"; position: absolute; right: -11px; color: var(--green-dark); font-size: 1.6rem; }
.workflow-track span:last-child::after { display: none; }

.service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.service-grid article {
  min-height: 270px; padding: 24px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--white);
}
.service-grid article:last-child { grid-column: span 2; }
.service-grid span {
  display: inline-flex; width: 42px; height: 42px; align-items: center; justify-content: center;
  margin-bottom: 28px; color: var(--white); background: var(--green); border-radius: 7px; font-weight: 850;
}
.service-grid article:nth-child(2n) span { background: var(--blue); }
.service-grid article:nth-child(3n) span { background: var(--gold); }
.service-grid p, .faq-list p { color: var(--muted); line-height: 1.6; }

.products { background: var(--white); }
.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.product-grid article {
  overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: var(--paper);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.product-grid article:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.product-grid img { width: 100%; aspect-ratio: 1.45; object-fit: cover; }
.product-grid h3 { margin: 0; padding: 16px; }

.products-page {
  --product-ink: #181d26;
  --product-blue: #1b61c9;
  --product-blue-soft: #eaf3ff;
  --product-border: #e0e2e6;
  --product-weak: rgba(4, 14, 32, 0.69);
  --product-shadow:
    rgba(0, 0, 0, 0.32) 0 0 1px,
    rgba(0, 0, 0, 0.08) 0 0 2px,
    rgba(45, 127, 249, 0.2) 0 1px 3px,
    rgba(0, 0, 0, 0.04) 0 0 0 0.5px inset;
  color: var(--product-ink);
  background: #ffffff;
  letter-spacing: 0.08px;
}

.products-hero {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(330px, 0.72fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: center;
  padding: clamp(70px, 9vw, 132px) clamp(18px, 6vw, 76px);
  background:
    radial-gradient(circle at 78% 12%, rgba(27, 97, 201, 0.16), transparent 28%),
    linear-gradient(135deg, #ffffff 0%, #f5f9ff 52%, #eef7f0 100%);
  border-bottom: 1px solid var(--product-border);
}

.products-hero-copy h1 {
  max-width: 920px;
  margin-bottom: 22px;
  color: var(--product-ink);
  font-size: clamp(3rem, 6.4vw, 6.3rem);
  line-height: 0.96;
  font-weight: 760;
}

.products-hero-copy p:not(.eyebrow),
.products-hero-board p,
.catalog-heading p,
.feature-product p,
.upgraded-grid p,
.products-cta p {
  color: var(--product-weak);
  line-height: 1.55;
}

.products-hero-copy p:not(.eyebrow) {
  max-width: 720px;
  font-size: 1.12rem;
}

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

.product-primary {
  background: var(--product-blue);
  box-shadow: rgba(27, 97, 201, 0.22) 0 12px 26px;
}

.product-secondary {
  color: var(--product-ink);
  background: #ffffff;
  border-color: var(--product-border);
}

.products-hero-board {
  display: grid;
  gap: 14px;
}

.products-hero-board article {
  padding: 22px;
  border: 1px solid var(--product-border);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--product-shadow);
}

.products-hero-board span,
.feature-product span,
.upgraded-grid span {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--product-blue);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.16px;
}

.products-hero-board strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.38rem;
  line-height: 1.15;
}

.category-strip {
  position: sticky;
  top: 79px;
  z-index: 12;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 14px clamp(18px, 6vw, 76px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid var(--product-border);
  backdrop-filter: blur(14px);
}

.category-strip a {
  flex: 0 0 auto;
  padding: 10px 15px;
  color: var(--product-ink);
  border: 1px solid var(--product-border);
  border-radius: 999px;
  background: #ffffff;
  font-size: 0.92rem;
  font-weight: 650;
}

.category-strip a:hover {
  color: #ffffff;
  background: var(--product-blue);
  border-color: var(--product-blue);
}

.product-showcase {
  background: #ffffff;
}

.featured-products {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 16px;
}

.feature-product {
  display: grid;
  grid-template-columns: 156px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  min-height: 230px;
  padding: 18px;
  border: 1px solid var(--product-border);
  border-radius: 24px;
  background: #ffffff;
  box-shadow: var(--product-shadow);
}

.feature-product.large {
  grid-row: span 2;
  grid-template-columns: 1fr;
  align-content: end;
  min-height: 476px;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(234, 243, 255, 0.54), rgba(255, 255, 255, 0.92)),
    #ffffff;
}

.feature-product img {
  width: 100%;
  aspect-ratio: 1.15;
  object-fit: cover;
  border-radius: 18px;
  background: var(--product-blue-soft);
}

.feature-product.large img {
  aspect-ratio: 1.65;
}

.feature-product h3 {
  margin-bottom: 10px;
  color: var(--product-ink);
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  line-height: 1.12;
}

.product-catalog {
  background: #f8fafc;
}

.catalog-heading {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(280px, 0.52fr);
  gap: 30px;
  align-items: end;
  margin-bottom: 30px;
}

.catalog-heading h2 {
  color: var(--product-ink);
}

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

.upgraded-grid article {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  min-height: 188px;
  padding: 14px;
  border-color: var(--product-border);
  border-radius: 24px;
  background: #ffffff;
  box-shadow: var(--product-shadow);
}

.upgraded-grid article:hover {
  transform: translateY(-4px);
  box-shadow:
    rgba(0, 0, 0, 0.12) 0 8px 24px,
    rgba(45, 127, 249, 0.22) 0 1px 3px;
}

.upgraded-grid img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 18px;
}

.upgraded-grid h3 {
  padding: 0;
  margin-bottom: 8px;
  color: var(--product-ink);
  font-size: 1.16rem;
}

.upgraded-grid p {
  margin: 0;
  font-size: 0.94rem;
}

.products-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: clamp(30px, 5vw, 76px) clamp(18px, 6vw, 76px);
  padding: clamp(28px, 5vw, 54px);
  border-radius: 32px;
  color: #ffffff;
  background:
    radial-gradient(circle at 85% 15%, rgba(255,255,255,0.24), transparent 26%),
    linear-gradient(135deg, #1b61c9, #154634);
  box-shadow: rgba(27, 97, 201, 0.28) 0 20px 50px;
}

.products-cta .eyebrow,
.products-cta p {
  color: rgba(255, 255, 255, 0.78);
}

.products-cta h2 {
  max-width: 760px;
  color: #ffffff;
}

.yiwu { display: grid; grid-template-columns: minmax(280px, 0.62fr) minmax(360px, 1fr); gap: clamp(30px, 6vw, 76px); align-items: start; }
.district-map {
  display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px;
  min-height: 360px; padding: 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); box-shadow: var(--shadow);
}
.district-map article {
  display: flex; flex-direction: column; justify-content: flex-end;
  min-height: 260px; padding: 18px; border-radius: 7px; color: var(--white); background: var(--green);
}
.district-map article:nth-child(2) { background: var(--blue); }
.district-map article:nth-child(3) { background: var(--gold); }
.district-map article:nth-child(4) { background: var(--coral); }
.district-map article:nth-child(5) { background: var(--green-dark); }
.district-map span { display: block; margin-bottom: 12px; font-size: 1.2rem; font-weight: 850; }
.district-map p { margin: 0; color: rgba(255,255,255,0.88); line-height: 1.45; }

.visit { background: linear-gradient(120deg, #eff4f1, #f7f7f2); }
.visit-panel {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: clamp(28px, 5vw, 54px); border: 1px solid var(--line); border-radius: 8px; background: var(--white); box-shadow: var(--shadow);
}

.qaq { background: var(--morandi-light); color: var(--ink); }
.faq-list { display: grid; gap: 12px; max-width: 980px; }
.faq-list details { border: 1px solid var(--line); border-radius: 8px; background: var(--white); }
.faq-list summary { cursor: pointer; padding: 20px 22px; font-weight: 800; }
.faq-list p { padding: 0 22px 22px; color: var(--muted); }

.video-section {
  background: var(--white);
}
.video-frame {
  position: relative;
  overflow: hidden;
  width: min(100%, 1040px);
  margin-inline: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--morandi-light);
  box-shadow: var(--shadow);
}
.video-frame video {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #dce7dc;
}
.feature-section {
  background: var(--paper);
}

.solution-page {
  display: grid;
  gap: 24px;
  background: var(--white);
}
.solution-box {
  scroll-margin-top: 96px;
  padding: clamp(28px, 5vw, 54px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(232, 240, 232, 0.78), rgba(255, 255, 255, 0.94)),
    var(--white);
  box-shadow: var(--shadow);
}
.solution-box h2 {
  color: var(--green-ink);
}
.solution-box p {
  max-width: 980px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.72;
}

.contact { display: grid; grid-template-columns: minmax(290px, 0.7fr) minmax(340px, 0.85fr); gap: clamp(30px, 6vw, 76px); background: var(--white); }
.home-contact { align-items: start; }
.contact-icons { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.contact-icons a { padding: 10px 14px; color: var(--green-dark); border: 1px solid var(--line); border-radius: 999px; font-weight: 800; background: var(--white); }

.inquiry-form { display: grid; gap: 16px; padding: clamp(22px, 4vw, 34px); border: 1px solid var(--line); border-radius: 8px; background: var(--paper); box-shadow: var(--shadow); }
.inquiry-form label { display: grid; gap: 7px; color: var(--muted); font-size: 0.88rem; font-weight: 760; }
.inquiry-form input, .inquiry-form select, .inquiry-form textarea {
  width: 100%; min-height: 46px; padding: 12px 13px; color: var(--ink);
  border: 1px solid var(--line); border-radius: 7px; background: var(--white); font: inherit;
}
.inquiry-form textarea { resize: vertical; }
.phone-control {
  display: grid;
  grid-template-columns: minmax(190px, 0.52fr) minmax(0, 1fr);
  gap: 10px;
}

.floating-contact { position: fixed; right: 16px; top: 44%; z-index: 25; display: grid; gap: 8px; }
.floating-contact a { padding: 12px 14px; color: var(--white); background: var(--green-dark); border-radius: 7px; box-shadow: var(--shadow); font-weight: 850; }
.floating-contact a:last-child { background: var(--blue); }
.mobile-contact { display: none; }

.site-footer { display: flex; justify-content: space-between; gap: 22px; padding: 30px clamp(18px, 6vw, 76px); color: rgba(255,255,255,0.78); background: var(--green-dark); }
.site-footer strong { color: var(--white); }
.site-footer p { margin: 6px 0 0; }

@media (max-width: 1100px) {
  .main-nav, .header-cta { display: none; }
  .nav-toggle { display: block; }
  .site-header { grid-template-columns: auto auto; justify-content: space-between; }
  .site-header.is-open .main-nav {
    display: grid; grid-column: 1 / -1; justify-content: start; gap: 14px; width: 100%; padding: 12px 0 4px;
  }
  .service-grid, .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service-grid article:last-child { grid-column: span 1; }
  .district-map { grid-template-columns: 1fr; }
  .district-map article { min-height: 120px; }
  .products-hero,
  .catalog-heading {
    grid-template-columns: 1fr;
  }
  .upgraded-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  body { padding-bottom: 68px; }
  .hero { min-height: 760px; align-items: flex-end; }
  .hero-shade { background: linear-gradient(180deg, rgba(232,240,232,0.56), rgba(203,220,205,0.96)); }
  h1 { font-size: clamp(3rem, 13vw, 5rem); line-height: 0.96; }
  .advantage-strip, .section-heading, .intro, .yiwu, .contact { grid-template-columns: 1fr; }
  .workflow-track { grid-template-columns: 1fr 1fr; }
  .workflow-track span::after { display: none; }
  .visit-panel { display: grid; }
  .category-strip {
    top: 79px;
  }
  .featured-products,
  .feature-product,
  .feature-product.large,
  .upgraded-grid,
  .upgraded-grid article,
  .products-cta {
    grid-template-columns: 1fr;
  }
  .feature-product.large {
    min-height: auto;
  }
  .products-cta {
    display: grid;
  }
  .floating-contact { display: none; }
  .mobile-contact {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
    display: grid; grid-template-columns: repeat(3, 1fr); background: var(--green-dark); border-top: 1px solid rgba(255,255,255,0.18);
  }
  .mobile-contact a { display: flex; min-height: 58px; align-items: center; justify-content: center; color: var(--white); font-weight: 850; }
  .mobile-contact a:nth-child(2) { background: var(--green); }
}

@media (max-width: 560px) {
  .brand { min-width: 0; }
  .brand small { display: none; }
  .hero-actions { flex-wrap: wrap; }
  .hero-actions a, .inquiry-form button { width: 100%; }
  .advantage-strip, .service-grid, .product-grid, .workflow-track { grid-template-columns: 1fr; }
  .phone-control { grid-template-columns: 1fr; }
  .products-hero {
    padding-top: 54px;
  }
  .products-actions a,
  .products-cta a {
    width: 100%;
  }
  .category-strip {
    top: 74px;
  }
  .site-footer { display: grid; }
}