:root {
  --black: #130b06;
  --ink: #101114;
  --muted: #62656b;
  --line: #ead9ca;
  --panel: #fff7ef;
  --white: #fff;
  --orange: #f28a24;
  --orange-deep: #b84f10;
  --orange-soft: #fff2e4;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #f6f6f6;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  padding: 0 5vw;
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
  box-shadow: 0 1px 14px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
  filter: brightness(0) saturate(100%) invert(55%) sepia(92%) saturate(1382%) hue-rotate(349deg) brightness(98%) contrast(93%);
}

.brand-name {
  color: var(--orange);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-mark {
  font-family: Georgia, serif;
  font-size: 42px;
  font-style: italic;
  line-height: 1;
}

.brand-text {
  font-size: 18px;
  font-weight: 600;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 32px;
  color: #333;
  font-size: 15px;
}

.nav-links a {
  padding: 26px 0;
}

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

.language-toggle {
  min-width: 64px;
  height: 38px;
  border: 2px solid var(--orange);
  background: #fff;
  color: var(--orange);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.language-toggle:hover {
  background: var(--orange);
  color: #fff;
}

.menu-button {
  display: none;
  width: 46px;
  height: 46px;
  border: 0;
  background: transparent;
  padding: 10px;
}

.menu-button span {
  display: block;
  height: 2px;
  margin: 6px 0;
  background: var(--orange);
}

.hero,
.contact {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  color: var(--white);
}

.hero img,
.contact img {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
}

.hero img {
  object-position: center center;
}

.hero-shade,
.contact-shade {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.42);
}

.hero-content,
.contact-content {
  position: relative;
  z-index: 1;
  width: min(1120px, 90vw);
  margin: 0 auto;
}

.hero-content {
  display: flex;
  min-height: 720px;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding-top: 38px;
}

.hero-content p {
  margin: 0 0 16px;
  font-size: clamp(24px, 5vw, 52px);
  font-weight: 300;
}

.hero h1 {
  margin: 0 0 44px;
  max-width: 760px;
  font-size: clamp(38px, 7vw, 78px);
  font-weight: 400;
  line-height: 1.18;
}

.outline-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  min-width: 230px;
  min-height: 68px;
  border: 2px solid rgba(242, 138, 36, 0.88);
  background: var(--orange);
  color: #fff;
  font-size: 18px;
  letter-spacing: 6px;
  padding: 0 30px;
}

.outline-button span {
  font-size: 38px;
  line-height: 0;
  letter-spacing: 0;
}

.outline-button.dark {
  border-color: var(--orange);
  color: var(--orange-deep);
  background: transparent;
  margin: 18px 0 72px;
}

.section {
  width: 100%;
  margin: 0 auto;
  padding: 86px 5vw;
}

.intro {
  background: var(--white);
}

.section-kicker {
  width: 118px;
  height: 9px;
  margin-bottom: 30px;
  background: var(--orange);
}

.intro h2 {
  margin: 0;
  font-size: clamp(42px, 8vw, 72px);
  font-weight: 400;
  line-height: 1.16;
}

.intro p {
  max-width: 960px;
  margin: 0 auto 22px;
  color: #34363b;
  font-size: 24px;
  line-height: 2.05;
  text-align: justify;
}

.products {
  padding-top: 0;
  padding-left: 0;
  padding-right: 0;
}

.product-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 34%;
  min-height: 560px;
  background: #fff;
  color: var(--ink);
}

.product-carousel {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(242, 138, 36, 0.08), transparent 36%),
    #fff;
  border-top: 1px solid rgba(242, 138, 36, 0.18);
  border-bottom: 1px solid rgba(242, 138, 36, 0.18);
}

.carousel-track,
.carousel-slide {
  position: absolute;
  inset: 0;
}

.carousel-slide {
  opacity: 0;
  transition: opacity 0.35s ease;
}

.carousel-slide.is-active {
  opacity: 1;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-control {
  position: absolute;
  top: 50%;
  z-index: 2;
  display: grid;
  width: 58px;
  height: 72px;
  place-items: center;
  border: 0;
  background: transparent;
  color: var(--orange);
  font-size: 76px;
  font-weight: 800;
  line-height: .78;
  transform: translateY(-50%);
  cursor: pointer;
  text-shadow: 0 2px 10px rgba(0, 0, 0, .22);
  transition: transform .2s ease, color .2s ease;
}

.carousel-control:hover {
  color: #ff7a00;
  transform: translateY(-50%) scale(1.08);
}

.carousel-control.prev {
  left: 24px;
}

.carousel-control.next {
  right: 24px;
}

.carousel-dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 26px;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 14px;
}

.carousel-dots button {
  width: 18px;
  height: 18px;
  border: 3px solid var(--orange);
  border-radius: 999px;
  background: rgba(255, 255, 255, .9);
  padding: 0;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .22);
  transition: width .2s ease, background .2s ease, transform .2s ease;
}

.carousel-dots button.is-active {
  width: 42px;
  background: var(--orange);
  transform: scale(1.06);
}

.product-categories {
  display: grid;
  grid-template-rows: repeat(4, 1fr);
  background: #fff;
  border-left: 1px solid rgba(242, 138, 36, 0.22);
}

.category-item {
  position: relative;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  min-height: 140px;
  border-bottom: 1px solid rgba(242, 138, 36, 0.3);
  padding: 32px 32px;
  color: var(--ink);
  transition: background 0.2s ease, color 0.2s ease;
}

.category-item:hover,
.category-item.is-active {
  background: var(--orange);
  color: #fff;
}

.category-item:last-child {
  border-bottom: 0;
}

.category-item:hover .more,
.category-item.is-active .more {
  color: #fff;
}

.category-item strong {
  width: 100%;
  margin: 0;
  padding-right: 118px;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.25;
  text-align: left;
}

.more {
  position: absolute;
  top: 50%;
  right: 30px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--orange-deep);
  font-size: 14px;
  transform: translateY(-50%);
}

.more i {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(242, 138, 36, 0.74);
  border-radius: 50%;
  font-style: normal;
  font-size: 26px;
  line-height: 1;
}

.advantages {
  display: grid;
  gap: 64px;
}

.advantage {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 52px;
  align-items: center;
  border-left: 1px solid var(--line);
  padding-left: 48px;
}

.advantage.reverse {
  grid-template-columns: 1.22fr 0.78fr;
}

.advantage.reverse .advantage-copy {
  order: 2;
}

.advantage-copy h3 {
  margin: 0 0 30px;
  border-left: 8px solid var(--orange);
  padding-left: 24px;
  font-size: 34px;
}

.advantage-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 23px;
  line-height: 1.85;
}

.advantage-copy p::before {
  content: "•";
  color: var(--orange);
  margin-right: 10px;
}

.advantage img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.contact {
  min-height: 620px;
}

.contact-content {
  min-height: 620px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: flex-start;
  text-align: left;
  padding-top: 86px;
}

.contact h2 {
  margin: 0 0 8px;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 600;
  line-height: 1.25;
}

.contact-goal {
  margin-bottom: 34px;
}

.contact-goal p {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  line-height: 1.25;
}

.contact-details h3 {
  margin: 0 0 14px;
  color: #fff;
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 600;
}

.contact-details p {
  margin: 10px 0;
  font-size: clamp(16px, 1.8vw, 21px);
  font-weight: 600;
  letter-spacing: 1px;
  line-height: 1.55;
}

.footer {
  background: #fff;
  color: #6b6b6b;
  padding: 28px 5vw;
  border-top: 4px solid var(--orange);
}

.footer p {
  margin: 0;
  font-size: 20px;
  line-height: 1.8;
  text-align: center;
}

.detail-page {
  background: #fff;
  min-height: calc(100vh - 74px);
  padding: 56px 3vw 72px;
}

.detail-hero {
  margin: 0 auto 42px;
  max-width: 1500px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--orange);
  font-size: 16px;
}

.detail-hero h1 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 600;
}

.detail-hero p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.detail-products {
  max-width: 1500px;
  margin: 0 auto;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}

.detail-card {
  border: 1px solid #e8e8e8;
  background: #fff;
  cursor: pointer;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.detail-card:hover,
.detail-card:focus-visible {
  border-color: var(--orange);
  box-shadow: 0 14px 34px rgba(255, 111, 0, .14);
  outline: none;
  transform: translateY(-2px);
}

.detail-image {
  display: grid;
  aspect-ratio: 1 / 0.92;
  place-items: center;
  background: #f9f9f9;
  overflow: hidden;
}

.detail-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.detail-card h2 {
  margin: 0;
  background: #f1f1f1;
  color: #2d3540;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  padding: 14px 12px;
  text-align: center;
}

.modal-open {
  overflow: hidden;
}

.product-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 32px;
  background: rgba(0, 0, 0, .62);
}

.product-modal.is-open {
  display: flex;
}

.product-modal-panel {
  position: relative;
  width: min(1280px, 100%);
  max-height: min(86vh, 900px);
  overflow: auto;
  background: #fff;
  padding: 34px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .28);
}

.product-modal-close {
  position: absolute;
  top: 16px;
  right: 18px;
  width: 42px;
  height: 42px;
  border: 0;
  background: var(--orange);
  color: #fff;
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
}

.product-modal-title {
  margin: 0 52px 24px 0;
  color: var(--ink);
  font-size: 28px;
  font-weight: 800;
  line-height: 1.25;
}

.product-modal-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}

.product-modal-images figure {
  margin: 0;
  background: #f7f7f7;
  border: 1px solid #ebebeb;
  min-height: 360px;
  display: grid;
  place-items: center;
}

.product-modal-images img {
  width: 100%;
  height: 100%;
  max-height: 70vh;
  object-fit: contain;
}

.detail-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 44px;
}

.detail-pagination button {
  min-width: 46px;
  height: 46px;
  border: 0;
  background: #303134;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
}

.detail-pagination button.is-active,
.detail-pagination button:hover {
  background: var(--orange);
}

@media (max-width: 820px) {
  .site-header {
    min-height: 66px;
  }

  .brand-logo {
    width: 50px;
    height: 50px;
  }

  .brand-name {
    font-size: 28px;
  }

  .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    top: 66px;
    display: none;
    grid-template-columns: 1fr;
    gap: 0;
    background: rgba(255, 255, 255, 0.98);
  }

  .nav-links.open {
    display: grid;
  }

  .nav-links a {
    padding: 18px 5vw;
    border-top: 1px solid rgba(242, 138, 36, 0.16);
  }

  .language-toggle {
    margin-left: auto;
  }

  .menu-button {
    display: block;
  }

  .hero,
  .hero-content {
    min-height: 620px;
  }

  .hero-content {
    align-items: flex-start;
    justify-content: flex-end;
    padding-bottom: 92px;
  }

  .section {
    width: 100%;
    padding: 62px 22px;
  }

  .products {
    padding-left: 0;
    padding-right: 0;
  }

  .intro h2 {
    font-size: 48px;
  }

  .intro p {
    font-size: 22px;
    line-height: 1.95;
  }

  .product-showcase {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .product-carousel {
    min-height: 420px;
  }

  .product-categories {
    grid-template-rows: none;
    grid-template-columns: repeat(2, 1fr);
  }

  .category-item {
    min-height: 160px;
    border-right: 1px solid rgba(242, 138, 36, 0.3);
    padding: 28px 24px;
  }

  .category-item:nth-child(2n) {
    border-right: 0;
  }

  .category-item strong {
    font-size: 22px;
  }

  .more {
    right: 22px;
  }

  .advantages {
    gap: 72px;
  }

  .advantage,
  .advantage.reverse {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-left: 38px;
  }

  .advantage.reverse .advantage-copy {
    order: 0;
  }

  .advantage-copy p {
    font-size: 22px;
  }

  .contact,
  .contact-content {
    min-height: 680px;
    padding-top: 64px;
  }

  .contact-details p {
    letter-spacing: 2px;
    line-height: 1.7;
  }

  .detail-page {
    padding: 42px 22px 58px;
  }

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

  .product-modal {
    padding: 18px;
  }

  .product-modal-panel {
    padding: 24px;
  }

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

@media (max-width: 480px) {
  .brand-logo {
    width: 46px;
    height: 46px;
  }

  .brand-name {
    font-size: 24px;
  }

  .language-toggle {
    min-width: 54px;
    height: 34px;
    font-size: 13px;
  }

  .outline-button {
    min-width: 188px;
    min-height: 56px;
    gap: 18px;
    font-size: 15px;
    letter-spacing: 4px;
  }

  .intro h2 {
    font-size: 39px;
  }

  .intro p,
  .advantage-copy p {
    font-size: 19px;
  }

  .product-carousel {
    min-height: 340px;
  }

  .carousel-control {
    width: 42px;
    height: 54px;
    font-size: 56px;
  }

  .carousel-control.prev {
    left: 14px;
  }

  .carousel-control.next {
    right: 14px;
  }

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

  .category-item {
    min-height: 128px;
    border-right: 0;
    padding: 24px 22px;
  }

  .category-item strong {
    font-size: 20px;
  }

  .more {
    right: 20px;
    font-size: 12px;
  }

  .advantage-copy h3 {
    font-size: 30px;
  }

  .footer p {
    font-size: 16px;
  }

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

  .detail-card h2 {
    font-size: 16px;
  }

  .product-modal-title {
    font-size: 22px;
  }

  .product-modal-images figure {
    min-height: 260px;
  }

  .detail-pagination button {
    min-width: 40px;
    height: 40px;
  }

  .contact-content {
    padding-top: 48px;
  }

  .contact-goal {
    margin-bottom: 28px;
  }

  .contact-details p {
    letter-spacing: 0;
    font-size: 16px;
  }
}