:root {
  --bg: #f8f5f0;
  --text: #2c3e50;
  --text-muted: #5c4b37;
  --accent: #d4af37;
  --accent-dark: #b8962e;
  --card: #ffffff;
  --border: rgba(92, 75, 55, 0.12);
  --shadow: 0 12px 40px rgba(44, 62, 80, 0.08);
  --font-en: "Roboto", "Open Sans", system-ui, sans-serif;
  --font-zh: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max: 1200px;
  --header-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-en);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

html[lang="zh-CN"] body {
  font-family: var(--font-zh);
}

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

a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-dark);
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 245, 240, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: var(--header-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  color: var(--text);
  margin-right: auto;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fff 0%, #e8dfd0 40%, #d4af37 100%);
  box-shadow: inset 0 2px 8px rgba(255, 255, 255, 0.8);
}

.logo-text {
  font-size: 0.95rem;
  max-width: 280px;
  line-height: 1.2;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  gap: 1.25rem;
}

.nav-link {
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.nav-link.active,
.nav-link:hover {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.lang-switch button {
  border: 1px solid var(--border);
  background: transparent;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.lang-switch button.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
}

/* Hero */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: url("../images/IMG_20260523_133504-2.jpg") center / cover no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(44, 62, 80, 0.75) 0%, rgba(92, 75, 55, 0.45) 100%);
}

.hero .container {
  position: relative;
  z-index: 1;
  padding: 4rem 0;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  margin: 0 0 1rem;
  max-width: 16ch;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.92;
  max-width: 42ch;
  margin-bottom: 2rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn--primary {
  background: var(--accent);
  color: #1a1a1a;
}

.btn--primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(212, 175, 55, 0.35);
}

.btn--outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.8);
  color: #fff;
}

.hero .btn--outline {
  border-color: #fff;
}

.page-hero .btn--outline,
.product-card .btn--outline {
  border-color: var(--text-muted);
  color: var(--text-muted);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section--alt {
  background: #fff;
}

.section__head {
  text-align: center;
  margin-bottom: 3rem;
}

.section__head h2 {
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
  color: var(--text-muted);
}

/* Advantages */
.advantages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.adv-card {
  text-align: center;
  padding: 2rem 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.adv-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: linear-gradient(145deg, #fff, #f0ebe3);
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--accent-dark);
}

.adv-card h3 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.adv-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.75rem;
}

.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow 0.25s;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  box-shadow: var(--shadow);
}

.product-card__img-wrap {
  aspect-ratio: 1;
  overflow: hidden;
  background: #eee8e0;
  display: block;
}

.product-card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.4s;
}

.product-card:hover img {
  transform: scale(1.04);
}

.product-card__body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card__body .btn {
  margin-top: auto;
  align-self: flex-start;
}

.product-card h3 {
  font-size: 1rem;
  font-weight: 500;
  margin: 0 0 0.35rem;
}

.muted {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Page hero */
.page-hero {
  padding: 4rem 0 2rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-weight: 300;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0;
}

/* Products layout */
.products-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2.5rem;
  padding: 3rem 0 5rem;
}

.filters {
  background: var(--card);
  padding: 1.5rem;
  border: 1px solid var(--border);
  height: fit-content;
  position: sticky;
  top: calc(var(--header-h) + 1rem);
}

.filters h3 {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.filters label {
  display: block;
  font-size: 0.8rem;
  margin: 0.75rem 0 0.25rem;
  color: var(--text-muted);
}

.filters select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border);
  background: var(--bg);
}

.filters .btn {
  width: 100%;
  margin-top: 1rem;
}

.filters .btn--ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* Product detail */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  padding: 3rem 0 5rem;
}

.gallery-main {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center;
  cursor: zoom-in;
  background: #eee8e0;
  border: 1px solid var(--border);
}

.gallery-thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.thumb {
  padding: 0;
  border: 2px solid transparent;
  cursor: pointer;
  background: none;
  width: 80px;
  height: 80px;
  overflow: hidden;
  flex-shrink: 0;
  border-radius: 2px;
  transition: border-color 0.2s;
}

.thumb.active {
  border-color: var(--accent);
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
}

.spec-table th,
.spec-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.spec-table th {
  width: 38%;
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(248, 245, 240, 0.6);
}

/* About */
.about-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 4rem;
}

.about-block:nth-child(even) .about-block__img,
.about-block:nth-child(even) .about-block__video {
  order: 2;
}

.about-block__img {
  overflow: hidden;
  border: 1px solid var(--border);
  background: #eee8e0;
}

.about-block__video {
  overflow: hidden;
  border: 1px solid var(--border);
  background: #1a1a1a;
  line-height: 0;
}

.about-block__video video {
  width: 100%;
  height: auto;
  max-height: 480px;
  display: block;
  margin: 0 auto;
  vertical-align: middle;
}

.about-video-caption {
  margin-top: 1rem;
  font-size: 0.875rem;
}

.about-block__img img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
  display: block;
  border: none;
}

.about-block h2 {
  font-weight: 400;
  letter-spacing: 0.06em;
  margin-top: 0;
}

/* Contact */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  padding: 3rem 0 5rem;
}

.contact-info p {
  margin: 0.25rem 0;
}

.map-wrap {
  margin-top: 1.5rem;
  aspect-ratio: 16/9;
  border: 1px solid var(--border);
}

.map-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Forms */
.form-card {
  background: var(--card);
  padding: 2rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  background: var(--bg);
  font: inherit;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.hp {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

.captcha-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.captcha-question {
  font-weight: 600;
  min-width: 4rem;
}

/* Lightbox */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.9);
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

#lightbox.open {
  display: flex;
}

#lightbox-img {
  max-height: 90vh;
  max-width: 90vw;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  background: none;
  border: none;
}

/* Footer */
.site-footer {
  position: relative;
  margin-top: 5rem;
  background: linear-gradient(165deg, #1e2d3a 0%, #2c3e50 45%, #3d4f3a 100%);
  color: rgba(248, 245, 240, 0.88);
  overflow: hidden;
}

.footer-accent {
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--accent) 20%,
    #f0e6d0 50%,
    var(--accent) 80%,
    transparent 100%
  );
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(200px, 1.4fr) minmax(120px, 0.8fr) minmax(200px, 1.2fr) minmax(180px, 1fr);
  gap: 2.5rem 2rem;
  padding: 3.5rem 0 2.5rem;
}

.footer-brand {
  padding-right: 1rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: #fff;
  margin-bottom: 1rem;
}

.footer-logo:hover {
  color: var(--accent);
}

.footer-logo__name {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.35;
  max-width: 14rem;
}

.footer-tagline {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(248, 245, 240, 0.65);
  max-width: 22rem;
}

.footer-col__title {
  margin: 0 0 1.25rem;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: rgba(248, 245, 240, 0.8);
  font-size: 0.9rem;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
  font-size: 0.875rem;
  line-height: 1.55;
}

.footer-icon {
  flex-shrink: 0;
  width: 1.25rem;
  color: var(--accent);
  font-size: 0.9rem;
  line-height: 1.5;
  text-align: center;
}

.footer-contact a {
  color: rgba(248, 245, 240, 0.85);
  word-break: break-all;
}

.footer-contact a:hover {
  color: var(--accent);
}

.footer-cta__desc {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: rgba(248, 245, 240, 0.65);
}

.btn--footer {
  display: inline-flex;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: #1a1a1a;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
}

.btn--footer:hover {
  background: #e8c96a;
  color: #1a1a1a;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.35);
}

.footer-bottom {
  border-top: 1px solid rgba(248, 245, 240, 0.1);
  background: rgba(0, 0, 0, 0.15);
}

.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding: 1.15rem 0;
  font-size: 0.8rem;
}

.footer-copy {
  margin: 0;
  color: rgba(248, 245, 240, 0.55);
}

.footer-rights {
  margin: 0;
  color: rgba(248, 245, 240, 0.45);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 1rem 1.5rem;
  background: var(--text);
  color: #fff;
  z-index: 300;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast--error {
  background: #8b3a3a;
}

.empty-state {
  text-align: center;
  padding: 3rem;
}

.error {
  color: #8b3a3a;
}

/* Responsive */
@media (max-width: 992px) {
  .advantages {
    grid-template-columns: repeat(2, 1fr);
  }
  .products-layout,
  .product-detail,
  .about-block,
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .footer-brand {
    grid-column: 1 / -1;
    padding-right: 0;
  }
  .filters {
    position: static;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  .logo-text {
    max-width: 11rem;
    white-space: normal;
    font-size: 0.85rem;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    padding: 1rem 1.5rem 1.5rem;
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open {
    display: flex;
  }
  .advantages {
    grid-template-columns: 1fr;
  }
  .footer-main {
    grid-template-columns: 1fr;
    padding: 2.5rem 0 2rem;
  }
  .footer-bottom__inner {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }
}