:root {
  --primary: #0f5fa8;
  --primary-dark: #0a345d;
  --accent: #f59e0b;
  --success: #16a34a;
  --ink: #102033;
  --muted: #64748b;
  --line: #dbe5ef;
  --surface: #ffffff;
  --soft: #f4f8fb;
  --soft-blue: #e9f3fb;
  --shadow: 0 24px 70px rgba(15, 52, 93, 0.14);
  --radius: 22px;
  font-family:
    Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #f7fbff 0%, #ffffff 38%, #f4f8fb 100%);
  line-height: 1.6;
}

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

img,
svg {
  max-width: 100%;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(219, 229, 239, 0.8);
}

.nav-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 1 310px;
  min-width: 0;
}

.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: white;
  font-weight: 800;
  letter-spacing: -0.04em;
  border-radius: 15px;
  background: linear-gradient(135deg, var(--primary), #22a3d8);
  box-shadow: 0 12px 30px rgba(15, 95, 168, 0.28);
}

.brand strong {
  display: block;
  font-size: 17px;
  line-height: 1.2;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #31445a;
  font-size: 15px;
}

.nav-links a {
  transition: color 0.2s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.language-toggle,
.nav-toggle {
  border: 0;
  cursor: pointer;
}

.language-toggle {
  padding: 10px 14px;
  color: var(--primary-dark);
  background: var(--soft-blue);
  border-radius: 999px;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  background: var(--soft-blue);
  border-radius: 14px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--primary-dark);
}

.section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 96px 0;
}

.first-section {
  padding-top: 72px;
}

.hero {
  min-height: calc(100vh - 78px);
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(340px, 0.98fr);
  align-items: center;
  gap: 56px;
  padding-top: 72px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--accent);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  max-width: 760px;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.14;
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  letter-spacing: -0.02em;
}

h3 small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

.hero-copy p,
.section-heading p,
.split-section > div > p,
.contact-copy p {
  color: var(--muted);
  font-size: 18px;
}

.hero-copy p {
  max-width: 720px;
  margin-bottom: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 22px;
  color: white;
  background: linear-gradient(135deg, var(--primary), #1682c5);
  border: 0;
  border-radius: 999px;
  box-shadow: 0 16px 34px rgba(15, 95, 168, 0.24);
  cursor: pointer;
  font-weight: 800;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(15, 95, 168, 0.3);
}

.btn-secondary {
  color: var(--primary-dark);
  background: white;
  border: 1px solid var(--line);
  box-shadow: none;
}

.btn-small {
  min-height: 40px;
  padding: 9px 16px;
  font-size: 14px;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 620px;
  margin: 40px 0 0;
}

.hero-stats div {
  padding: 22px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(219, 229, 239, 0.9);
  border-radius: 20px;
}

.hero-stats dt {
  color: var(--primary);
  font-size: 30px;
  font-weight: 900;
}

.hero-stats dd {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-visual {
  position: relative;
  min-height: 580px;
  border-radius: 34px;
  overflow: hidden;
  background:
    radial-gradient(circle at 25% 20%, rgba(34, 163, 216, 0.24), transparent 28%),
    linear-gradient(145deg, #10395d 0%, #0f5fa8 48%, #cdeaf8 100%);
  box-shadow: var(--shadow);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 28px;
}

.roll {
  position: absolute;
  border-radius: 999px;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.55) 0 6px, rgba(226, 238, 246, 0.88) 6px 14px),
    linear-gradient(135deg, #fff, #b6d5e7);
  box-shadow:
    inset -18px -16px 30px rgba(15, 52, 93, 0.2),
    0 22px 44px rgba(0, 0, 0, 0.18);
}

.roll::after {
  content: "";
  position: absolute;
  inset: 22%;
  border-radius: 50%;
  background: radial-gradient(circle, #eef7fb 0 38%, #85b9d1 40% 52%, #f7fbff 54% 100%);
}

.roll-large {
  width: 300px;
  height: 300px;
  left: 58px;
  bottom: 112px;
}

.roll-medium {
  width: 210px;
  height: 210px;
  right: 54px;
  top: 84px;
}

.roll-small {
  width: 142px;
  height: 142px;
  right: 160px;
  bottom: 92px;
}

.material-panel {
  position: absolute;
  left: 36px;
  right: 36px;
  bottom: 34px;
  padding: 24px;
  color: white;
  background: rgba(10, 52, 93, 0.72);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 24px;
}

.material-panel span,
.material-panel small {
  display: block;
  color: rgba(255, 255, 255, 0.78);
}

.material-panel strong {
  display: block;
  margin: 8px 0;
  font-size: 22px;
}

.section-heading {
  max-width: 740px;
  margin: 0 auto 44px;
  text-align: center;
}

.compact-heading {
  margin-top: 68px;
  margin-bottom: 30px;
}

.section-heading .eyebrow {
  justify-content: center;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.product-card {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 16px 44px rgba(15, 52, 93, 0.08);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.product-texture {
  min-height: 156px;
  background-color: var(--soft-blue);
}

.texture-nonwoven {
  background:
    radial-gradient(circle at 12% 30%, rgba(255, 255, 255, 0.9) 0 2px, transparent 3px),
    radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.9) 0 2px, transparent 3px),
    repeating-linear-gradient(35deg, #d7e9f3 0 7px, #eff8fc 8px 14px);
}

.texture-silk {
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.92), transparent 28%),
    repeating-linear-gradient(110deg, #f7fbff 0 12px, #dbeafe 12px 24px);
}

.texture-spray {
  background:
    radial-gradient(circle at 18% 80%, rgba(255, 255, 255, 0.8), transparent 24%),
    repeating-linear-gradient(62deg, #d8e7ef 0 9px, #f3f8fb 9px 19px);
}

.texture-melt {
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.9) 0 1px, transparent 2px) 0 0 / 14px 14px,
    linear-gradient(135deg, #c9deea, #f8fbfd);
}

.product-body {
  padding: 24px;
}

.product-label {
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-card p,
.product-card li,
.application-grid p,
.process-grid p,
.factory-info p {
  color: var(--muted);
}

.product-card ul {
  min-height: 120px;
  padding-left: 18px;
  margin: 18px 0;
}

.text-link {
  color: var(--primary);
  font-weight: 800;
}

.text-link::after {
  content: " ->";
}

.merchant-products {
  margin-top: 22px;
}

.merchant-product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.merchant-product-card {
  overflow: hidden;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 16px 44px rgba(15, 52, 93, 0.08);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.merchant-product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.merchant-product-card > img {
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.merchant-product-card::before {
  content: "";
  display: block;
  aspect-ratio: 4 / 3;
  background-color: var(--soft-blue);
  background-position: top center;
  background-size: 120% auto;
  background-repeat: no-repeat;
}

.merchant-product-card:nth-child(1)::before {
  background-image: url("assert/nonwoven-fabric.jpg");
}

.merchant-product-card:nth-child(2)::before {
  background-image: url("assert/3d-pp-cotton.jpg");
}

.merchant-product-card:nth-child(3)::before {
  background-image: url("assert/2d-pp-cotton.jpg");
}

.merchant-product-card:nth-child(4)::before {
  background-image: url("assert/imitation-silk-cotton.jpg");
}

.merchant-product-card:nth-child(5)::before {
  background-image: url("assert/spray-bonded-cotton.jpg");
}

.merchant-product-card:nth-child(6)::before {
  background-image: url("assert/glue-free-cotton.jpg");
}

.merchant-product-card:nth-child(7)::before {
  background-image: url("assert/washed-cotton.jpg");
}

.merchant-product-card:nth-child(8)::before {
  background-image: url("assert/hot-air-cotton.jpg");
}

.merchant-product-card:nth-child(9)::before {
  background-image: url("assert/meltblown-fabric.jpg");
}

.merchant-product-card:nth-child(10)::before {
  background-image: url("assert/pearl-cotton.jpg");
}

.merchant-product-card:nth-child(11)::before {
  background-image: url("assert/needle-punched-cotton.jpg");
}

.merchant-product-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: top center;
  background: var(--soft-blue);
}

.merchant-product-card div {
  padding: 18px 20px 22px;
}

.merchant-product-card h3 {
  margin-bottom: 12px;
}

.split-section {
  display: grid;
  grid-template-columns: 1fr 0.86fr;
  align-items: center;
  gap: 50px;
}

.advantage-list {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.advantage-list div {
  display: grid;
  gap: 4px;
  padding: 18px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.advantage-list strong {
  color: var(--primary-dark);
}

.advantage-list span {
  color: var(--muted);
}

.factory-card {
  overflow: hidden;
  background: white;
  border: 1px solid var(--line);
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.factory-video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--primary-dark);
}

.factory-image {
  min-height: 320px;
  background:
    linear-gradient(rgba(15, 95, 168, 0.08), rgba(15, 95, 168, 0.08)),
    repeating-linear-gradient(90deg, transparent 0 58px, rgba(255, 255, 255, 0.35) 59px 61px),
    linear-gradient(140deg, #d2e6f1 0%, #f7fbff 42%, #9bc2d7 100%);
  position: relative;
}

.factory-image::before,
.factory-image::after {
  content: "";
  position: absolute;
  border-radius: 18px 18px 0 0;
  background: rgba(15, 95, 168, 0.72);
}

.factory-image::before {
  width: 58%;
  height: 48%;
  left: 12%;
  bottom: 0;
}

.factory-image::after {
  width: 34%;
  height: 32%;
  right: 12%;
  bottom: 0;
  background: rgba(245, 158, 11, 0.74);
}

.factory-info {
  padding: 26px;
}

.applications {
  padding-top: 56px;
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.application-card {
  overflow: hidden;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 16px 44px rgba(15, 52, 93, 0.08);
}

.application-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--soft-blue);
}

.application-card div {
  padding: 22px;
}

.application-grid span {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: white;
  background: var(--primary);
  border-radius: 14px;
  font-weight: 900;
}

.quality-card {
  padding: 54px;
  color: white;
  background:
    linear-gradient(135deg, rgba(10, 52, 93, 0.95), rgba(15, 95, 168, 0.92)),
    radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.35), transparent 32%);
  border-radius: 32px;
  box-shadow: var(--shadow);
}

.quality-card .eyebrow {
  color: #bfdbfe;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.process-grid div {
  padding: 22px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 20px;
}

.process-grid p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.76);
}

.contact-section {
  display: grid;
  grid-template-columns: 0.82fr 1fr;
  gap: 44px;
  align-items: start;
}

.contact-methods {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.contact-methods a,
.contact-entry {
  display: grid;
  gap: 4px;
  padding: 18px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 18px;
  font-style: normal;
}

.contact-methods strong,
.contact-entry strong {
  color: var(--primary);
}

.qr-entry img {
  width: 132px;
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: white;
}

.inquiry-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding: 30px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.inquiry-form label {
  display: grid;
  gap: 8px;
  color: var(--primary-dark);
  font-weight: 800;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 14px;
  color: var(--ink);
  background: #fbfdff;
  outline: none;
}

.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(15, 95, 168, 0.1);
}

.full-field {
  grid-column: 1 / -1;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 48px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 4px 0 0;
  color: var(--muted);
}

.site-footer a {
  color: var(--primary);
  font-weight: 800;
}

@media (max-width: 1060px) {
  .nav-toggle {
    display: block;
  }

  .nav-links,
  .nav-actions {
    display: none;
  }

  .nav-shell.is-open {
    flex-wrap: wrap;
    padding: 14px 0;
  }

  .nav-shell.is-open .nav-links,
  .nav-shell.is-open .nav-actions {
    display: flex;
    width: 100%;
  }

  .nav-shell.is-open .nav-links {
    flex-direction: column;
    align-items: flex-start;
    padding-top: 14px;
  }

  .hero,
  .split-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 460px;
  }

  .product-grid,
  .merchant-product-grid,
  .application-grid,
  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .section {
    width: min(100% - 24px, 1180px);
    padding: 64px 0;
  }

  .nav-shell {
    width: min(100% - 24px, 1180px);
  }

  .brand small {
    display: none;
  }

  h1 {
    font-size: 42px;
  }

  .hero-stats,
  .product-grid,
  .merchant-product-grid,
  .application-grid,
  .process-grid,
  .inquiry-form {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 390px;
  }

  .roll-large {
    width: 210px;
    height: 210px;
    left: 28px;
    bottom: 118px;
  }

  .roll-medium {
    width: 150px;
    height: 150px;
    right: 24px;
    top: 54px;
  }

  .roll-small {
    width: 104px;
    height: 104px;
    right: 92px;
    bottom: 118px;
  }

  .quality-card {
    padding: 30px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}