:root {
  --green-950: #14251d;
  --green-900: #1b3328;
  --green-800: #244634;
  --green-700: #315f47;
  --gold: #d9bd6a;
  --gold-dark: #aa8540;
  --ink: #17231d;
  --muted: #66736b;
  --line: #e2e8e2;
  --paper: #ffffff;
  --soft: #f5f8f4;
  --soft-green: #e9f0e8;
  --shadow: 0 18px 40px rgba(20, 37, 29, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  overflow-x: hidden;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  line-height: 1.65;
}

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

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

@keyframes heroIntro {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  display: none;
  background: var(--green-950);
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.92), rgba(245, 248, 242, 0.86)),
    rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(217, 189, 106, 0.18);
  box-shadow: 0 18px 46px rgba(20, 37, 29, 0.08);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1540px, calc(100% - 64px));
  min-height: 112px;
  gap: 36px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 1 600px;
  min-width: 520px;
}

.brand-mark {
  display: block;
  flex: 0 0 auto;
  width: var(--sk-logo-size, 112px);
}

.brand-mark img {
  display: block;
  width: var(--sk-logo-size, 112px);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 8px 14px rgba(20, 37, 29, 0.08));
}

.brand-name {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
  white-space: nowrap;
}

.brand-name strong {
  color: var(--green-900);
  font-size: 28px;
  line-height: 1;
  letter-spacing: 0;
}

.brand-name span {
  color: var(--muted);
  font-size: clamp(12px, 0.82vw, 14px);
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: clamp(24px, 2.4vw, 46px);
  color: var(--green-900);
  font-size: 18px;
  font-weight: 800;
}

.nav a {
  position: relative;
  padding: 43px 0;
  white-space: nowrap;
  letter-spacing: 0.01em;
  transition: color 0.2s ease;
}

.nav a::after {
  position: absolute;
  left: 0;
  bottom: 31px;
  width: 0;
  height: 3px;
  background: var(--gold);
  content: "";
  transition: width 0.2s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--green-800);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}

@media (max-width: 1320px) {
  .header-inner {
    gap: 24px;
  }

  .brand {
    flex-basis: 500px;
    min-width: 500px;
  }

  .brand-name strong {
    font-size: 26px;
  }

  .brand-name span {
    font-size: 12px;
  }

  .nav {
    gap: clamp(18px, 1.5vw, 24px);
    font-size: 16px;
  }
}

.menu-toggle {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--green-900);
  border-radius: 999px;
  padding: 9px 14px;
  font-weight: 700;
  cursor: pointer;
}

.lang-toggle {
  display: inline-grid;
  grid-template-columns: 34px 42px;
  align-items: center;
  height: 36px;
  padding: 3px;
  border: 1px solid rgba(217, 189, 106, 0.9);
  border-radius: 3px;
  background: #fffaf0;
  color: var(--green-800);
  box-shadow: 0 4px 12px rgba(20, 37, 29, 0.08);
  cursor: pointer;
}

.lang-toggle span {
  display: grid;
  place-items: center;
  height: 28px;
  border-radius: 2px;
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
}

.lang-toggle span.is-active {
  background: var(--green-800);
  color: var(--gold);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  border-radius: 999px;
  padding: 0 22px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--green-800);
  color: #fff;
  box-shadow: 0 12px 24px rgba(36, 70, 52, 0.18);
}

.btn-gold {
  background: var(--gold);
  color: var(--green-950);
}

.btn-light {
  background: #fff;
  color: var(--green-900);
  border-color: var(--line);
}

.hero {
  position: relative;
  min-height: 630px;
  overflow: hidden;
  background: var(--soft);
}

.hero::before {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(20, 37, 29, 0.76) 0%, rgba(20, 37, 29, 0.54) 34%, rgba(20, 37, 29, 0.14) 68%, rgba(20, 37, 29, 0.02) 100%),
    var(--hero-image, url("../img/hero-showroom.png")) center / cover no-repeat;
  content: "";
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: center;
  min-height: 630px;
  max-width: 650px;
  color: #fff;
  padding: 72px 0;
  animation: heroIntro 0.85s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.eyebrow {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 36px;
  height: 2px;
  background: var(--gold);
  content: "";
}

.hero h1,
.page-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.12;
  letter-spacing: 0;
}

.hero p {
  max-width: 560px;
  margin: 0 0 30px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 18px;
}

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

.stat-strip {
  position: relative;
  z-index: 2;
  margin-top: -56px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.stat {
  padding: 28px 30px;
  border-right: 1px solid var(--line);
}

.stat:last-child {
  border-right: 0;
}

.stat strong {
  display: block;
  color: var(--green-800);
  font-size: 32px;
  line-height: 1;
}

.stat span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 86px 0;
}

.section-soft {
  background: var(--soft);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 36px;
}

.section-title {
  max-width: 720px;
}

.section-title h2 {
  margin: 0 0 12px;
  color: var(--green-950);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
}

.section-title p {
  margin: 0;
  color: var(--muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.home-product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.product-card,
.news-card,
.value-card,
.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.32s ease, border-color 0.32s ease;
}

.product-card:hover,
.news-card:hover,
.value-card:hover {
  transform: translateY(-8px);
  border-color: rgba(217, 189, 106, 0.7);
  box-shadow: var(--shadow);
}

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

.product-card img,
.news-card img,
.detail-image img,
.split img {
  backface-visibility: hidden;
  transform: translateZ(0);
  transition: transform 0.48s cubic-bezier(0.22, 1, 0.36, 1);
}

.product-card:hover img,
.news-card:hover img,
.detail-image:hover img,
.split img:hover {
  transform: translateZ(0) scale(1.045);
}

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

.product-body,
.news-body,
.value-card,
.contact-card {
  padding: 24px;
}

.product-body small,
.news-body small {
  color: var(--gold-dark);
  font-weight: 800;
  text-transform: uppercase;
}

.product-body h3,
.news-body h3 {
  margin: 8px 0 10px;
  color: var(--green-950);
  font-size: 21px;
}

.product-body p,
.news-body p,
.value-card p {
  margin: 0;
  color: var(--muted);
}

.arrow-link {
  display: inline-flex;
  margin-top: 18px;
  color: var(--green-800);
  font-weight: 800;
}

.home-product-grid .product-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.home-product-grid .product-card img {
  aspect-ratio: 1.18 / 1;
}

.home-product-grid .product-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 18px 18px 20px;
}

.home-product-grid .product-body small {
  display: -webkit-box;
  min-height: 34px;
  overflow: hidden;
  font-size: 11px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.home-product-grid .product-body h3 {
  display: -webkit-box;
  min-height: 48px;
  margin: 10px 0 8px;
  overflow: hidden;
  font-size: 18px;
  line-height: 1.32;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.home-product-grid .product-body p {
  display: -webkit-box;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.65;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.home-product-grid .arrow-link {
  margin-top: auto;
  padding-top: 16px;
  font-size: 14px;
}

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

.history-timeline {
  position: relative;
  display: grid;
  gap: 26px;
}

.history-timeline::before {
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 50%;
  width: 2px;
  background: linear-gradient(180deg, rgba(49, 95, 71, 0.05), rgba(49, 95, 71, 0.35), rgba(49, 95, 71, 0.05));
  content: "";
}

.history-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 110px minmax(0, 1fr);
  align-items: start;
  gap: 20px;
}

.history-item.is-right .history-spacer {
  grid-column: 1;
}

.history-item.is-right .history-card {
  grid-column: 3;
}

.history-item.is-left .history-spacer {
  grid-column: 3;
}

.history-item.is-left .history-card {
  grid-column: 1;
}

.history-rail {
  position: relative;
  grid-column: 2;
  display: grid;
  justify-items: center;
  gap: 12px;
  padding-top: 8px;
}

.history-year {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--green-800);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 16px 28px rgba(36, 70, 52, 0.16);
}

.history-dot {
  width: 14px;
  height: 14px;
  border: 3px solid #fff;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 6px rgba(217, 189, 106, 0.18);
}

.history-card {
  padding: 28px 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.history-card h2 {
  margin: 0 0 14px;
  color: var(--green-950);
  font-size: 28px;
  line-height: 1.2;
}

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

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 54px;
}

.split img {
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.split {
  overflow: visible;
}

.feature-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.feature-list li {
  display: flex;
  gap: 12px;
  color: var(--green-900);
  font-weight: 600;
}

.feature-list li::before {
  display: grid;
  place-items: center;
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--soft-green);
  color: var(--green-800);
  content: "✓";
}

.page-hero {
  background: linear-gradient(135deg, var(--green-950), var(--green-800));
  color: #fff;
  padding: 86px 0;
}

.page-hero p {
  max-width: 680px;
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
}

.crumbs {
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 14px;
}

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

.pill {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--green-900);
  border-radius: 999px;
  padding: 9px 16px;
  font-weight: 700;
  cursor: pointer;
  min-height: 44px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.pill.is-active,
.pill:hover {
  background: var(--green-800);
  border-color: var(--green-800);
  color: #fff;
  transform: translateY(-1px);
}

[data-product-card][hidden] {
  display: none;
}

.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 22px;
}

.pagination {
  margin-top: 32px;
}

.pagination ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.pagination .current {
  background: var(--green-800);
  color: #fff;
  border-color: var(--green-800);
}

.product-detail {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 46px;
  align-items: start;
}

.detail-image {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--soft);
}

.reveal-on-scroll {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  transition:
    opacity 0.48s ease,
    transform 0.58s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  will-change: auto;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal-on-scroll {
    opacity: 1;
    transform: none;
  }
}

.detail-copy h2 {
  margin: 0 0 14px;
  color: var(--green-950);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
}

.detail-copy p {
  color: var(--muted);
}

.product-attrs {
  margin: 24px 0 0;
}

.product-attrs__title {
  margin: 0 0 14px;
  color: var(--green-950);
  font-size: 22px;
  line-height: 1.2;
}

.product-attrs__table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  -webkit-overflow-scrolling: touch;
}

.product-attrs__table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  min-width: 720px;
}

.product-attrs__table th,
.product-attrs__table td {
  border-bottom: 1px solid var(--line);
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  word-break: break-word;
}

.product-attrs__table th {
  width: 16%;
  background: var(--soft);
  color: var(--green-900);
}

.product-attrs__table td {
  width: 34%;
  color: var(--muted);
}

.product-attrs__table tr:last-child th,
.product-attrs__table tr:last-child td {
  border-bottom: 0;
}

.empty-state {
  padding: 28px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: var(--soft);
}

.cta-band {
  background: linear-gradient(135deg, var(--green-950), var(--green-800));
  color: #fff;
  padding: 64px 0;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta-inner h2 {
  margin: 0 0 10px;
  font-size: clamp(26px, 4vw, 38px);
}

.cta-inner p {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 760px);
  justify-content: start;
}

.contact-grid .contact-card {
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  padding: 0;
  overflow: visible;
}

.contact-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.contact-list li {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.contact-list strong {
  display: block;
  color: var(--green-900);
}

.form {
  display: grid;
  gap: 14px;
}

.form-notice {
  margin: 12px 0 18px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  color: var(--green-900);
  font-weight: 700;
  line-height: 1.6;
}

.form-notice.is-success {
  border-color: rgba(36, 70, 52, 0.2);
  background: rgba(36, 70, 52, 0.08);
}

.form-notice.is-error {
  border-color: rgba(158, 52, 52, 0.22);
  background: rgba(158, 52, 52, 0.07);
  color: #7b2d2d;
}

.form-honeypot {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.form input,
.form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  font: inherit;
}

.form textarea {
  min-height: 150px;
  resize: vertical;
}

.site-footer {
  background: var(--green-950);
  color: rgba(255, 255, 255, 0.78);
  padding: 56px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 0.9fr;
  gap: 42px;
  margin-bottom: 34px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.footer-logo img {
  width: 66px;
  height: 50px;
  object-fit: contain;
}

.footer-logo strong,
.site-footer h3 {
  color: #fff;
}

.footer-links {
  display: grid;
  gap: 10px;
}

.copyright {
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
}

@media (max-width: 980px) {
  .topbar {
    display: none;
  }

  .header-inner {
    width: min(1180px, calc(100% - 32px));
    min-height: 86px;
    gap: 16px;
  }

  .brand-mark img {
    width: min(var(--sk-logo-size, 112px), 86px);
    max-height: 70px;
  }

  .brand-name strong {
    font-size: 18px;
  }

  .brand-name span {
    font-size: 12px;
  }

  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 86px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 20px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 13px 0;
  }

  .nav a::after {
    bottom: 8px;
  }

  .brand {
    min-width: 0;
    flex-basis: auto;
    gap: 12px;
  }

  .brand-name span {
    display: none;
  }

  .stats,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .grid-5 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid-3,
  .split,
  .product-detail,
  .contact-grid,
  .footer-grid,
  .cta-inner {
    grid-template-columns: 1fr;
  }

  .history-timeline::before {
    left: 16px;
  }

  .history-item {
    grid-template-columns: 32px 1fr;
    gap: 14px;
  }

  .history-item.is-left .history-spacer,
  .history-item.is-right .history-spacer,
  .history-item.is-left .history-card,
  .history-item.is-right .history-card {
    grid-column: 2;
  }

  .history-rail {
    grid-column: 1;
  }

  .history-year {
    font-size: 16px;
    padding: 0 14px;
  }

  .grid-5 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .brand-mark img {
    width: 58px;
  }

  .brand-name strong {
    font-size: 15px;
  }

  .hero,
  .hero-content {
    min-height: 560px;
  }

  .stats,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .home-product-grid {
    grid-template-columns: 1fr;
  }

  .filter-bar {
    gap: 10px;
  }

  .grid-5 {
    grid-template-columns: 1fr;
  }

  .stat {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .section {
    padding: 64px 0;
  }

  .section-head {
    display: grid;
  }

  .history-card {
    padding: 22px;
  }

  .history-card h2 {
    font-size: 22px;
  }
}