:root {
  --ink: #17212b;
  --muted: #62707f;
  --soft: #eef4f3;
  --line: #dce6e8;
  --paper: #fbfcf8;
  --white: #ffffff;
  --teal: #0f8f8a;
  --teal-dark: #096661;
  --coral: #ef704f;
  --sun: #f4bf45;
  --leaf: #7aa657;
  --shadow: 0 18px 50px rgba(23, 33, 43, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.55;
}

body[data-lang="en"] .lang-zh,
body[data-lang="zh"] .lang-en {
  display: none;
}

a {
  color: inherit;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(251, 252, 248, 0.93);
  border-bottom: 1px solid rgba(220, 230, 232, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--white);
  background: var(--teal);
  border-radius: 8px;
  font-weight: 900;
}

.brand-text {
  max-width: 240px;
  overflow-wrap: anywhere;
  font-weight: 900;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 26px);
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
}

.main-nav a,
.quote-pill,
.text-button {
  text-decoration: none;
}

.main-nav a:hover {
  color: var(--teal-dark);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.icon-button,
.quote-pill,
.primary-button,
.secondary-button,
.add-button {
  min-height: 44px;
  border-radius: 8px;
  font-weight: 900;
  cursor: pointer;
}

.icon-button {
  padding: 0 13px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
}

.quote-pill,
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  background: var(--teal);
  border: 1px solid var(--teal);
  box-shadow: 0 10px 22px rgba(15, 143, 138, 0.2);
}

.quote-pill {
  padding: 0 16px;
}

.primary-button,
.secondary-button {
  padding: 0 22px;
  text-decoration: none;
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--teal-dark);
  background: var(--white);
  border: 1px solid var(--line);
}

.text-button {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--teal-dark);
  font-weight: 900;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(48px, 7vw, 94px) clamp(18px, 4vw, 56px) 54px;
  background:
    linear-gradient(120deg, rgba(15, 143, 138, 0.13), transparent 44%),
    linear-gradient(180deg, #ffffff 0%, #f4f7ee 100%);
}

.hero-copy {
  max-width: 820px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
span,
a,
button {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  max-width: 900px;
  font-size: clamp(42px, 6vw, 74px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.22;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 690px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.trust-row span {
  padding: 10px 13px;
  border: 1px solid rgba(15, 143, 138, 0.2);
  border-radius: 8px;
  color: var(--teal-dark);
  background: rgba(255, 255, 255, 0.78);
  font-weight: 800;
}

.hero-panel {
  position: relative;
}

.hero-panel img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-note {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 22px;
  display: grid;
  gap: 3px;
  padding: 15px 16px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 32px rgba(23, 33, 43, 0.14);
}

.hero-note span {
  color: var(--muted);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  padding: 0 clamp(18px, 4vw, 56px);
  background: var(--line);
}

.metric-strip div {
  display: grid;
  gap: 5px;
  min-height: 110px;
  align-content: center;
  padding: 22px;
  background: var(--white);
}

.metric-strip strong {
  font-size: 23px;
}

.metric-strip span {
  color: var(--muted);
  font-weight: 700;
}

.section {
  padding: clamp(58px, 8vw, 98px) clamp(18px, 4vw, 56px);
}

.section-heading {
  display: grid;
  gap: 4px;
  margin-bottom: 30px;
}

.section-heading.center {
  justify-items: center;
  text-align: center;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
}

.filter-button {
  min-height: 40px;
  padding: 0 16px;
  color: var(--muted);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 900;
}

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

.product-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(180px, 1fr));
  gap: 18px;
}

.product-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 430px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(23, 33, 43, 0.06);
}

.product-card.hidden {
  display: none;
}

.product-visual {
  min-height: 150px;
  border-bottom: 1px solid var(--line);
}

.ball-visual {
  background:
    radial-gradient(circle at 46% 53%, #f4bf45 0 17%, transparent 18%),
    radial-gradient(circle at 58% 43%, #0f8f8a 0 4%, transparent 5%),
    radial-gradient(circle at 40% 49%, #ffffff 0 5%, transparent 6%),
    linear-gradient(135deg, #fff4cc, #d8eeee);
}

.squeak-visual {
  background:
    radial-gradient(circle at 50% 54%, #ef704f 0 21%, transparent 22%),
    radial-gradient(circle at 39% 43%, #ffffff 0 4%, transparent 5%),
    radial-gradient(circle at 62% 43%, #ffffff 0 4%, transparent 5%),
    linear-gradient(135deg, #ffe4dc, #eef4ff);
}

.wand-visual {
  background:
    linear-gradient(120deg, transparent 0 45%, #17212b 46% 49%, transparent 50%),
    radial-gradient(circle at 68% 30%, #f4bf45 0 9%, transparent 10%),
    radial-gradient(circle at 72% 41%, #0f8f8a 0 5%, transparent 6%),
    linear-gradient(135deg, #ecf7f5, #fff2c7);
}

.clean-visual {
  background:
    linear-gradient(90deg, transparent 0 38%, #7aa657 39% 45%, transparent 46%),
    radial-gradient(ellipse at 54% 54%, #d9f2ef 0 18%, transparent 19%),
    radial-gradient(circle at 63% 39%, #ffffff 0 5%, transparent 6%),
    linear-gradient(135deg, #f4fbfa, #eff6e8);
}

.chew-visual {
  background:
    linear-gradient(28deg, transparent 0 30%, #d8a35c 31% 39%, transparent 40%),
    linear-gradient(-24deg, transparent 0 50%, #f4bf45 51% 59%, transparent 60%),
    radial-gradient(circle at 65% 42%, #ef704f 0 7%, transparent 8%),
    linear-gradient(135deg, #fff4da, #f4eee4);
}

.product-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 18px;
}

.card-kicker {
  margin: 0 0 8px;
  color: var(--coral);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.product-body p:not(.card-kicker) {
  margin: 0;
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 18px 0;
}

.tag-row span {
  padding: 5px 8px;
  color: var(--teal-dark);
  background: var(--soft);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 900;
}

.add-button {
  width: 100%;
  margin-top: auto;
  color: var(--teal-dark);
  background: var(--white);
  border: 1px solid var(--teal);
}

.add-button.added {
  color: var(--white);
  background: var(--teal);
}

.why-section {
  background: var(--white);
}

.why-grid,
.timeline,
.capability-grid,
.faq-list {
  display: grid;
  gap: 18px;
}

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

.why-grid article,
.timeline article,
.factory-card,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.why-grid article {
  padding: 24px;
}

.number-badge {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 34px;
  margin-bottom: 18px;
  color: var(--white);
  background: var(--coral);
  border-radius: 8px;
  font-weight: 900;
}

.why-grid p,
.timeline p,
.oem-copy p,
.factory-card p,
.check-list,
.faq-list p,
.contact-copy p,
.catalog-copy p {
  margin: 0;
  color: var(--muted);
}

.wholesale-section {
  background: #eef7f5;
}

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

.timeline article {
  min-height: 230px;
  padding: 24px;
}

.timeline span {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 20px;
  color: var(--white);
  background: var(--ink);
  border-radius: 50%;
  font-weight: 900;
}

.oem-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
}

.oem-copy p {
  max-width: 650px;
  margin-top: 18px;
  font-size: 18px;
}

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

.capability-grid div {
  min-height: 92px;
  padding: 18px;
  border: 1px solid var(--line);
  border-left: 6px solid var(--sun);
  border-radius: 8px;
  background: var(--white);
  font-weight: 900;
}

.catalog-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  background:
    linear-gradient(120deg, rgba(244, 191, 69, 0.28), transparent 48%),
    #fff8df;
}

.catalog-copy p {
  max-width: 760px;
  margin-top: 18px;
  font-size: 18px;
}

.catalog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.factory-section {
  background: var(--white);
}

.factory-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
  gap: 22px;
}

.factory-card {
  padding: 26px;
  background: #f8fbfa;
}

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

.check-list li {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  font-weight: 800;
}

.faq-section {
  background: #f4f7ef;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 900;
}

.faq-list p {
  margin-top: 12px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(340px, 0.95fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: start;
  color: var(--white);
  background: var(--ink);
}

.contact-section .eyebrow,
.contact-copy p {
  color: #b7dcd8;
}

.contact-methods {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.contact-methods a {
  color: var(--white);
  font-weight: 900;
}

.inquiry-summary {
  margin-top: 26px;
  padding: 18px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
}

.inquiry-summary p {
  margin-top: 6px;
}

.inquiry-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: clamp(20px, 4vw, 32px);
  color: var(--ink);
  background: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.inquiry-form label {
  display: grid;
  gap: 7px;
  font-weight: 900;
}

.inquiry-form label:nth-last-child(3),
.inquiry-form label:nth-last-child(2),
.form-button {
  grid-column: 1 / -1;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  color: var(--ink);
  background: #f9fbfb;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.inquiry-form textarea {
  resize: vertical;
}

.form-button {
  border: 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(18px, 4vw, 56px);
  color: var(--muted);
  background: var(--white);
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
}

.floating-tools {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  display: grid;
  gap: 10px;
}

.floating-tools a {
  display: grid;
  place-items: center;
  min-width: 54px;
  height: 54px;
  padding: 0 10px;
  color: var(--white);
  background: var(--coral);
  border-radius: 50%;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.18);
  text-decoration: none;
  font-weight: 900;
}

.floating-tools a:first-child {
  background: #20b15a;
}

.floating-tools a:nth-child(2) {
  width: auto;
  border-radius: 999px;
  background: var(--teal);
}

.page-hero {
  padding: clamp(38px, 6vw, 72px) clamp(18px, 4vw, 56px);
  background:
    linear-gradient(120deg, rgba(15, 143, 138, 0.12), transparent 46%),
    linear-gradient(180deg, #ffffff 0%, #f4f7ee 100%);
}

.page-hero h1 {
  max-width: 980px;
  font-size: clamp(34px, 4.4vw, 58px);
  line-height: 1.04;
}

.page-hero p:not(.eyebrow) {
  max-width: 760px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.section.faq-list {
  padding-top: clamp(34px, 5vw, 56px);
}

.two-column-page,
.factory-layout {
  align-items: stretch;
}

.two-column-page {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.content-card {
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 28px rgba(23, 33, 43, 0.06);
}

.content-card h2 {
  font-size: clamp(24px, 3vw, 34px);
}

.content-card p {
  margin: 16px 0 0;
  color: var(--muted);
}

.content-card .secondary-button {
  margin-top: 22px;
}

.product-detail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.spec-list {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

.spec-list li {
  padding: 9px 10px;
  background: #f7fbfa;
  border: 1px solid var(--line);
  border-radius: 8px;
}

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

.info-band {
  background: var(--white);
}

.content-card strong {
  color: var(--ink);
}

.legal-content {
  max-width: 960px;
  margin: 0 auto;
}

.legal-content h2 {
  margin-top: 28px;
  font-size: 26px;
}

.legal-content p {
  color: var(--muted);
}

.address-placeholder {
  margin-top: 24px;
}

.form-status {
  grid-column: 1 / -1;
  min-height: 24px;
  margin: 0;
  color: var(--teal-dark);
  font-weight: 800;
}

@media (max-width: 1180px) {
  .site-header {
    flex-wrap: wrap;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  .hero-section,
  .oem-section,
  .catalog-section,
  .two-column-page,
  .product-detail-list,
  .factory-layout,
  .contact-section {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 720px) {
  .brand-text {
    max-width: 190px;
    font-size: 14px;
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }

  .main-nav {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero-section {
    min-height: auto;
  }

  .hero-actions,
  .trust-row,
  .catalog-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .metric-strip,
  .product-grid,
  .why-grid,
  .mini-grid,
  .timeline,
  .capability-grid,
  .inquiry-form,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .primary-button,
  .secondary-button,
  .text-button {
    width: 100%;
    justify-content: center;
  }

  .hero-note {
    position: static;
    margin-top: 12px;
  }

  .floating-tools {
    right: 12px;
    bottom: 12px;
  }
}