/* 龙头国漆 企业官网样式 */

:root {
  --primary: #8B1A1A;
  --primary-dark: #5C1010;
  --primary-light: #B82E2E;
  --gold: #C9A85C;
  --gold-light: #E8D5A0;
  --bg: #FDFBF7;
  --bg-warm: #F5F0E8;
  --bg-dark: #1A1A1A;
  --text: #2D2D2D;
  --text-light: #5B5B5B;
  --text-lighter: #888888;
  --white: #FFFFFF;
  --shadow: rgba(0,0,0,0.08);
  --shadow-strong: rgba(0,0,0,0.16);
  --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: color 0.3s ease; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

.container {
  width: 92%;
  max-width: 1280px;
  margin: 0 auto;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(253,251,247,0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(201,168,92,0.15);
  transition: box-shadow 0.3s ease;
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

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

.logo img {
  height: 52px;
  width: auto;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-text .brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  line-height: 1.2;
}

.logo-text .slogan {
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 3px;
  margin-top: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-menu a {
  display: block;
  padding: 8px 14px;
  font-size: 0.95rem;
  color: var(--text);
  position: relative;
  font-weight: 500;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 14px; right: 14px;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  transform: scaleX(1);
}

/* ===== 下拉菜单 ===== */
.nav-item {
  position: relative;
}

.nav-item > .nav-link::after {
  /* 下拉提示小箭头（hover 时显现） */
  content: '';
  position: absolute;
  top: 50%;
  right: 4px;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid var(--gold);
  border-bottom: 1.5px solid var(--gold);
  transform: translateY(-70%) rotate(45deg);
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.nav-item:hover > .nav-link::after {
  opacity: 1;
  transform: translateY(-35%) rotate(45deg);
}

.dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 216px;
  background: #fffdf9;
  border: 1px solid rgba(201,168,92,0.25);
  border-top: 3px solid var(--primary);
  border-radius: 6px;
  box-shadow: 0 18px 44px rgba(0,0,0,0.14);
  padding: 6px 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 120;
}

/* 下拉顶部小三角 */
.dropdown::before {
  content: '';
  position: absolute;
  top: -7px;
  left: 50%;
  margin-left: -6px;
  width: 12px;
  height: 12px;
  background: #fffdf9;
  border-left: 1px solid rgba(201,168,92,0.25);
  border-top: 1px solid rgba(201,168,92,0.25);
  transform: rotate(45deg);
}

.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 0.9rem;
  color: var(--text);
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}

.dropdown a:hover {
  background: rgba(139,31,40,0.06);
  color: var(--primary);
  padding-left: 26px;
}

.nav-menu .dropdown a::after { display: none; }

.mobile-toggle {
  display: none;
  width: 44px; height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
}

.mobile-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--primary);
  transition: all 0.3s ease;
}

/* Hero Carousel */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  max-height: 900px;
  overflow: hidden;
  margin-top: 80px;
}

.hero-slides {
  position: relative;
  width: 100%; height: 100%;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease-in-out, transform 6s ease;
  transform: scale(1.05);
}

.hero-slide.active {
  opacity: 1;
  transform: scale(1);
  z-index: 1;
}

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

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(22,14,8,0.50) 0%, rgba(22,14,8,0.16) 55%, rgba(22,14,8,0.02) 100%),
    linear-gradient(0deg, rgba(22,14,8,0.24) 0%, transparent 50%),
    linear-gradient(0deg, rgba(180,90,30,0.20) 0%, rgba(180,90,30,0.06) 50%, transparent 100%);
  z-index: 2;
}

.hero-content {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 92%;
  max-width: 1280px;
  z-index: 3;
  color: var(--white);
  text-align: left;
}

.hero-text {
  max-width: 680px;
}

.hero-kicker {
  font-size: 0.85rem;
  letter-spacing: 4px;
  color: var(--gold-light);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.hero-slogan {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  color: var(--gold-light);
  letter-spacing: 8px;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 1.05rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.9);
  max-width: 540px;
  margin-bottom: 32px;
}

/* 轮播配文切换淡入动画 */
.hero-kicker.hero-fade,
.hero-desc.hero-fade {
  animation: heroFade 0.6s ease both;
}

@keyframes heroFade {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hero-cta:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139,26,26,0.35);
}

.hero-nav {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 20px;
}

.hero-dots {
  display: flex;
  gap: 10px;
}

.hero-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}

.hero-dot.active {
  background: var(--gold);
  transform: scale(1.3);
}

.hero-arrow {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.1);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.2rem;
}

.hero-arrow:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--bg-dark);
}

/* Section Common */
.section {
  padding: 100px 0;
}

.section-warm { background: var(--bg-warm); }
.section-dark { background: var(--bg-dark); color: var(--white); }

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 4px;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-dark .section-title { color: var(--white); }

.section-desc {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.8;
}

.section-dark .section-desc { color: rgba(255,255,255,0.7); }

/* Intro / Enterprise */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.intro-text h3 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.intro-text p {
  color: var(--text-light);
  margin-bottom: 16px;
  text-align: justify;
}

.intro-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.stat-item {
  text-align: center;
  padding: 20px;
  background: var(--bg);
  border-radius: 4px;
  border-top: 3px solid var(--gold);
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 6px;
}

.intro-image {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 20px 60px var(--shadow-strong);
}

.intro-image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.intro-image.intro-video video {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
  background: #000;
  border-radius: 4px;
}

/* Brand Cards */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.brand-card {
  background: var(--bg);
  padding: 36px 24px;
  border-radius: 4px;
  text-align: center;
  border: 1px solid rgba(201,168,92,0.2);
  transition: all 0.3s ease;
}

.brand-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px var(--shadow);
  border-color: var(--gold);
}

.brand-card .logo-box {
  height: 108px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 24px;
}

.brand-card .brand-logo {
  display: block;
  height: auto;
  width: auto;
}

/* 按 logo 宽高比等面积缩放：四张视觉面积一致（约 8500px²） */
.brand-card .brand-logo[src*="zhengdaming"] { width: 118px; }
.brand-card .brand-logo[src*="longtou"] { width: 92px; }
.brand-card .brand-logo[src*="niuwang"] { width: 103px; }
.brand-card .brand-logo[src*="suishiji"] { width: 88px; }

/* 品牌卡整体可点击 */
a.brand-card {
  text-decoration: none;
  color: inherit;
  display: block;
}

.brand-card .brand-more {
  font-size: 0.85rem;
  color: var(--gold);
  letter-spacing: 1px;
  margin-top: 14px;
}

/* 品牌独立页 */
.brand-page-logo {
  width: 190px;
  max-width: 60%;
  margin: 0 auto 28px;
  display: block;
}

.brand-card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: 10px;
  color: var(--text);
}

.brand-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--bg);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 4px 16px var(--shadow);
  transition: all 0.3s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px var(--shadow-strong);
}

.product-card .image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-warm);
}

.product-card .image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .image img {
  transform: scale(1.08);
}

.product-card .info {
  padding: 24px;
}

.product-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--text);
}

.product-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}

.product-card .link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 500;
}

/* News */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background: var(--bg);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 4px 16px var(--shadow);
  transition: all 0.3s ease;
}

.news-card:hover {
  box-shadow: 0 12px 32px var(--shadow-strong);
}

.news-card .image {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--bg-warm);
}

.news-card .image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-card:hover .image img {
  transform: scale(1.05);
}

.news-card .info {
  padding: 24px;
}

.news-card .date {
  font-size: 0.8rem;
  color: var(--gold);
  margin-bottom: 8px;
}

.news-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 10px;
  line-height: 1.4;
  color: var(--text);
}

.news-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* Solutions (5 大行业解决方案入口，首页) */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

/* Solution image cards */
.solution-card {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 420px;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(201,168,92,0.25);
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.solution-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: 0 12px 32px rgba(0,0,0,0.45);
}

.solution-card .solution-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.solution-card:hover .solution-bg {
  transform: scale(1.05);
}

.solution-card .solution-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,12,10,0.94) 0%, rgba(15,12,10,0.55) 45%, rgba(15,12,10,0.12) 100%);
}

.solution-card .solution-body {
  position: relative;
  padding: 24px 20px 26px;
  text-align: left;
  width: 100%;
}

.solution-card .solution-body h3 {
  font-size: 1.15rem;
  color: #FDFBF7;
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.solution-card .solution-body p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(253,251,247,0.82);
  margin-bottom: 14px;
}

.solution-card .solution-link {
  font-size: 0.85rem;
  color: var(--gold);
  letter-spacing: 1px;
}

/* Cooperation */
.coop-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.coop-card {
  background: var(--bg);
  padding: 40px 28px;
  border-radius: 4px;
  text-align: center;
  border: 1px solid rgba(201,168,92,0.2);
  transition: all 0.3s ease;
}

.coop-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--shadow);
}

/* 商务合作卡片：突出小标题，金色分隔线点缀 */
.coop-card h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 16px;
}

.coop-card h3::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: var(--gold);
  margin: 14px auto 0;
}

.coop-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* Service */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-item {
  background: rgba(255,255,255,0.05);
  padding: 32px 24px;
  border-radius: 4px;
  text-align: center;
  border: 1px solid rgba(201,168,92,0.15);
  transition: all 0.3s ease;
}

.service-item:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--gold);
}

.service-item .icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  color: var(--gold);
  font-size: 1.6rem;
}

.service-item h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.service-item p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
}

/* Stores */
.store-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.store-card {
  display: flex;
  gap: 24px;
  background: var(--bg);
  padding: 28px;
  border-radius: 4px;
  box-shadow: 0 4px 16px var(--shadow);
  transition: all 0.3s ease;
}

.store-card:hover {
  box-shadow: 0 12px 32px var(--shadow-strong);
}

.store-card .image {
  width: 180px;
  flex-shrink: 0;
  border-radius: 4px;
  overflow: hidden;
}

.store-card .image img {
  width: 100%; height: 100%;
  object-fit: cover;
  aspect-ratio: 1/1;
}

.store-card .info h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--primary);
}

.store-card .info p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 8px;
  line-height: 1.7;
}

.store-card .tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(139,26,26,0.08);
  color: var(--primary);
  font-size: 0.75rem;
  border-radius: 2px;
  margin-top: 8px;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.cta-banner h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 16px;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto 32px;
}

.cta-banner .btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  background: var(--gold);
  color: var(--bg-dark);
  font-weight: 600;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.cta-banner .btn:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo img {
  height: 48px;
  margin-bottom: 16px;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer-column h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--gold-light);
  margin-bottom: 20px;
}

.footer-column a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 10px;
}

.footer-column a:hover {
  color: var(--gold);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

/* Page Banner */
.page-banner {
  position: relative;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
  margin-top: 80px;
  overflow: hidden;
}

.page-banner img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}

.page-banner .overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,26,26,0.6);
}

.page-banner .content {
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 12px;
}

.page-banner p {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
}

/* Breadcrumb */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--text-light);
  background: var(--bg-warm);
}

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

/* Timeline */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--gold);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 20px 40px;
}

.timeline-item:nth-child(odd) { left: 0; text-align: right; }
.timeline-item:nth-child(even) { left: 50%; }

.timeline-item::before {
  content: '';
  position: absolute;
  top: 26px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--gold);
}

.timeline-item:nth-child(odd)::before { right: -8px; }
.timeline-item:nth-child(even)::before { left: -8px; }

.timeline-year {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--gold);
  margin-bottom: 6px;
}

.timeline-text {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid rgba(0,0,0,0.08);
  padding: 24px 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text);
  cursor: pointer;
}

.faq-answer {
  color: var(--text-light);
  padding-top: 12px;
  line-height: 1.8;
}

/* Contact Cards */
.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.contact-card {
  background: var(--bg);
  padding: 32px;
  border-radius: 4px;
  text-align: center;
  box-shadow: 0 4px 16px var(--shadow);
}

.contact-card .icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  color: var(--primary);
  font-size: 1.5rem;
}

.contact-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* Responsive */
@media (max-width: 1024px) {
  .brand-grid,
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .visit-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-card { min-height: 360px; }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 80px; left: 0; right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 20px;
    gap: 0;
    box-shadow: 0 8px 24px var(--shadow);
    transform: translateY(-150%);
    opacity: 0;
    transition: all 0.3s ease;
  }
  
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
  }
  
  .nav-menu a {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
  }
  
  /* 移动端下拉：静态展开为缩进子列表 */
  .nav-item { width: 100%; }
  .nav-item > .nav-link { width: 100%; }
  .nav-item > .nav-link::after { display: none; }
  .dropdown {
    position: static;
    transform: none;
    min-width: 0;
    background: transparent;
    border: none;
    border-left: 2px solid rgba(212,175,55,0.45);
    border-radius: 0;
    box-shadow: none;
    padding: 0 0 4px 14px;
    margin: -4px 0 4px 14px;
    opacity: 1;
    visibility: visible;
  }
  .dropdown::before { display: none; }
  .dropdown a {
    padding: 9px 14px;
    font-size: 0.88rem;
    border-bottom: 1px dashed rgba(0,0,0,0.05);
  }
  .dropdown a:hover { padding-left: 18px; }
  
  .mobile-toggle {
    display: flex;
  }
  
  .mobile-toggle.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .mobile-toggle.open span:nth-child(2) { opacity: 0; }
  
  .mobile-toggle.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .hero { height: 70vh; min-height: 520px; }
  .hero-content { text-align: center; }
  .hero-text { margin: 0 auto; }
  .hero-slogan { letter-spacing: 4px; }
  
  .intro-grid,
  .news-grid,
  .coop-grid,
  .solutions-grid,
  .service-grid,
  .store-list,
  .contact-cards { grid-template-columns: 1fr; }
  
  .brand-grid,
  .product-grid { grid-template-columns: 1fr; }

  .process-steps { grid-template-columns: 1fr; }

  .price-row { flex-direction: column; align-items: flex-start; gap: 12px; }
  
  .intro-stats { grid-template-columns: 1fr; }
  
  .store-card { flex-direction: column; }
  .store-card .image { width: 100%; }
  
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  
  .timeline::before { left: 20px; }
  .timeline-item { width: 100%; left: 0; padding-left: 50px; text-align: left; }
  .timeline-item:nth-child(even) { left: 0; }
  .timeline-item::before { left: 14px !important; right: auto !important; }
}

/* Catalog Filter */
.catalog-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.filter-tag {
  padding: 10px 28px;
  border: 1px solid rgba(139,26,26,0.25);
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light);
  transition: all 0.3s ease;
}

.filter-tag:hover,
.filter-tag.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

/* Product Badge */
.badge {
  position: absolute;
  top: 14px; left: 14px;
  padding: 4px 12px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.75rem;
  border-radius: 2px;
  letter-spacing: 1px;
}

.badge.light { background: var(--gold); color: var(--bg-dark); }

/* Spec List */
.spec-list {
  margin: 12px 0 4px;
  border-top: 1px dashed rgba(201,168,92,0.4);
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 0.85rem;
  border-bottom: 1px dashed rgba(201,168,92,0.25);
}

.spec-list li span { color: var(--text-lighter); }
.spec-list li b { font-weight: 500; color: var(--text); }

/* Price Row */
.price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
}

.price {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}

.price small {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-lighter);
}

.buy-btn {
  padding: 8px 18px;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 0.85rem;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.buy-btn:hover {
  background: var(--primary);
  color: var(--white);
}

/* Process Steps */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.process-step {
  background: var(--bg);
  padding: 32px 20px;
  border-radius: 4px;
  text-align: center;
  border-top: 3px solid var(--gold);
  transition: all 0.3s ease;
}

.process-step:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--shadow);
}

.step-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 12px;
}

.process-step h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* Visit Guide */
.visit-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.visit-item {
  background: var(--bg);
  padding: 28px;
  border-radius: 4px;
  border: 1px solid rgba(201,168,92,0.2);
}

.visit-item h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 12px;
}

.visit-item p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 8px;
}

/* Map Buttons */
.map-btns {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.map-btn {
  padding: 8px 18px;
  font-size: 0.85rem;
  border-radius: 2px;
  color: var(--white);
  transition: all 0.3s ease;
}

.map-btn.amap { background: var(--primary); }
.map-btn.tmap { background: #2C6DA8; }

.map-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px var(--shadow);
  color: var(--white);
}

/* FAQ Wrap */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-toggle {
  color: var(--gold);
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* Brand Video */
.video-player {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #000;
  box-shadow: 0 24px 80px var(--shadow-strong);
  cursor: pointer;
}

.video-poster {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.video-player:hover .video-poster {
  transform: scale(1.03);
}

.video-caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 48px 28px 20px;
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  color: var(--white);
  font-size: 0.9rem;
  letter-spacing: 1px;
  z-index: 1;
  pointer-events: none;
}

.video-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 96px; height: 96px;
  border-radius: 50%;
  background: rgba(139,26,26,0.9);
  border: 2px solid rgba(255,255,255,0.6);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2;
  animation: videoPulse 2.2s infinite;
  transition: all 0.3s ease;
}

.video-play svg { width: 34px; height: 34px; margin-left: 4px; }

.video-player:hover .video-play {
  transform: translate(-50%, -50%) scale(1.08);
  background: var(--primary);
}

@keyframes videoPulse {
  0%   { box-shadow: 0 0 0 0 rgba(139,26,26,0.5); }
  70%  { box-shadow: 0 0 0 24px rgba(139,26,26,0); }
  100% { box-shadow: 0 0 0 0 rgba(139,26,26,0); }
}

/* Brand Video Grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}

.video-grid .video-player {
  max-width: none;
  margin: 0;
}

@media (max-width: 768px) {
  .video-grid {
    grid-template-columns: 1fr;
  }
}

/* Video Lightbox */
.video-lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.video-lightbox.open {
  opacity: 1;
  visibility: visible;
}

.video-lightbox .inner {
  width: min(90vw, 1100px);
}

.video-lightbox video {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 4px;
  display: block;
}

.lightbox-close {
  position: absolute;
  top: 20px; right: 24px;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.08);
  color: var(--white);
  font-size: 1.3rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.lightbox-close:hover {
  background: var(--primary);
  border-color: var(--primary);
}

/* Utilities */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-0 { margin-bottom: 0; }

/* ============ 品牌独立页 ============ */
/* 品牌页 hero：略矮于首页，聚焦品牌 */
.brand-hero { height: 78vh; min-height: 520px; max-height: 820px; }

/* 品牌页轮播：原图直出，不做滤镜叠加 */
/* 正大明：继承站点默认红金主题（庄重典雅） */

/* 龙头国漆：墨绿山林主题（材料 · 产业） */
body.bp-longtou {
  --primary: #2F5233;
  --primary-dark: #1E3A22;
  --primary-light: #3E6B44;
  --gold: #B9A177;
  --gold-light: #E0D3B8;
  --bg-dark: #141E16;
}

/* 牛王国漆：暖褐老字号主题（非遗 · 手作） */
body.bp-niuwang {
  --primary: #7A4A21;
  --primary-dark: #543012;
  --primary-light: #96622F;
  --gold: #C89B5A;
  --gold-light: #E8CFA4;
  --bg-dark: #221810;
}

/* 岁时记：青绿节气主题（生活美学 · 清新） */
body.bp-suishiji {
  --primary: #2E6E5E;
  --primary-dark: #1E4C40;
  --primary-light: #3C8A76;
  --gold: #D4B483;
  --gold-light: #EFE3C8;
  --bg-dark: #13221E;
}

/* 品牌故事：竖排引言点缀 */
.brand-quote {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--primary);
  border-left: 3px solid var(--gold);
  padding-left: 16px;
  margin: 20px 0;
  line-height: 1.9;
}

/* 品牌故事时间线 */
.brand-timeline {
  margin-top: 36px;
  display: grid;
  gap: 18px;
}
.brand-timeline .tl-item {
  display: flex;
  gap: 16px;
  align-items: baseline;
}
.brand-timeline .tl-year {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--gold);
  min-width: 96px;
  font-size: 1.05rem;
}
.brand-timeline .tl-text { color: var(--text-light); font-size: 0.95rem; }

/* 产品矩阵页签提示 */
.brand-matrix-note {
  text-align: center;
  color: var(--text-light);
  font-size: 0.9rem;
  margin-top: 34px;
}
.brand-matrix-note a { color: var(--gold); border-bottom: 1px solid var(--gold); }

/* 品牌故事：整页叙事版式（非分栏） */
.brand-story {
  max-width: 820px;
  margin: 0 auto;
}
.brand-story p {
  color: var(--text-light);
  font-size: 1.02rem;
  line-height: 2;
  margin-bottom: 22px;
  text-align: justify;
}
.brand-story p:first-of-type {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  color: var(--text);
}
.brand-story .brand-quote {
  text-align: center;
  border-left: none;
  padding: 0;
  margin: 30px auto;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--primary);
}

/* 全站正文段落首行缩进两格 */
.brand-story p,
.intro-text p,
.news-card p { text-indent: 2em; }

/* 引文与居中段落不缩进 */
.brand-story .brand-quote { text-indent: 0; }

/* ============ 正大明史料档案馆 ============ */
.archive-era {
  margin-bottom: 42px;
}
.archive-era:last-child { margin-bottom: 0; }
.archive-era-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(0,0,0,.08);
}
.archive-era-head .era-years {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--gold);
  letter-spacing: 1px;
  white-space: nowrap;
}
.archive-era-head .era-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--primary);
}
.archive-era-head .era-note {
  font-size: 0.85rem;
  color: var(--text-light);
}
.archive-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.archive-item {
  background: #fff;
  border: 1px solid rgba(0,0,0,.06);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,.05);
  transition: transform .3s ease, box-shadow .3s ease;
}
.archive-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 22px rgba(0,0,0,.12);
}
.archive-item .archive-img {
  aspect-ratio: 4 / 3;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.archive-item .archive-ph {
  aspect-ratio: 4 / 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background:
    repeating-linear-gradient(45deg, rgba(0,0,0,.015) 0 10px, transparent 10px 20px),
    #f7f4ee;
  border-bottom: 1px dashed rgba(0,0,0,.12);
  color: rgba(0,0,0,.35);
  font-size: .8rem;
  letter-spacing: 2px;
}
.archive-item .archive-ph svg {
  width: 30px; height: 30px;
  opacity: .35;
}
.archive-item figcaption {
  padding: 12px 14px;
  text-align: center;
}
.archive-item .cap-year {
  display: block;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--gold);
  font-size: .85rem;
  margin-bottom: 3px;
  letter-spacing: 1px;
}
.archive-item .cap-title {
  font-size: .92rem;
  color: var(--text);
}
.archive-note {
  margin-top: 36px;
  text-align: center;
  color: var(--text-light);
  font-size: .88rem;
}
@media (max-width: 992px) {
  .archive-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 576px) {
  .archive-grid { grid-template-columns: 1fr; }
}

/* 固定头部高度补偿（顶栏 38px + 主导航 80px = 118px） */
body .hero { margin-top: 118px; }
body .page-banner { margin-top: 118px; }

@media (max-width: 768px) {
  body .hero, body .page-banner { margin-top: 80px; }
  .nav-menu { top: 80px; }
  .topbar { display: none; }
}

/* ===== 顶栏：正大明品牌产品快捷入口 + 搜索 + 购物车（参考 mi.com） ===== */
.topbar {
  background: #17130f;
  color: rgba(255,255,255,0.72);
  font-size: 12px;
  border-bottom: 1px solid rgba(201,168,92,0.12);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
  gap: 16px;
}
.topbar-links {
  display: flex;
  align-items: center;
  white-space: nowrap;
  overflow: visible;
}
.topbar-links .tb-brand {
  color: var(--gold);
  font-weight: 600;
  padding: 0 6px 0 0;
  line-height: 38px;
}
.topbar-links .tb-group {
  color: rgba(255,255,255,0.38);
  margin: 0 4px 0 14px;
}
.topbar-links .tb-sep { color: rgba(255,255,255,0.18); margin: 0 8px; }
.topbar-links a {
  color: rgba(255,255,255,0.72);
  padding: 0 5px;
  line-height: 38px;
  transition: color 0.2s ease;
}
.topbar-links a:hover { color: #fff; }
.topbar-tools { display: flex; align-items: center; gap: 18px; }
.topbar-search { display: flex; align-items: center; }
.topbar-search input {
  width: 180px;
  height: 26px;
  padding: 0 12px;
  border: 1px solid rgba(255,255,255,0.22);
  border-right: none;
  border-radius: 13px 0 0 13px;
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 12px;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.topbar-search input::placeholder { color: rgba(255,255,255,0.38); }
.topbar-search input:focus {
  border-color: rgba(212,175,55,0.6);
  background: rgba(255,255,255,0.13);
}
.topbar-search button {
  width: 36px;
  height: 26px;
  border: none;
  border-radius: 0 13px 13px 0;
  background: var(--gold);
  color: #17130f;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: filter 0.2s ease;
}
.topbar-search button:hover { filter: brightness(1.08); }
.topbar-cart {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.85);
  cursor: pointer;
  line-height: 38px;
  user-select: none;
}
.topbar-cart:hover { color: #fff; }
.cart-badge {
  min-width: 16px;
  height: 16px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 10px;
  line-height: 16px;
  text-align: center;
  padding: 0 4px;
}
.cart-mini {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 250px;
  background: #fffdf9;
  border: 1px solid rgba(201,168,92,0.25);
  border-radius: 10px;
  box-shadow: 0 18px 44px rgba(0,0,0,0.16);
  padding: 20px 18px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 150;
}
.topbar-cart:hover .cart-mini,
.topbar-cart.open .cart-mini {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.cart-mini p { font-size: 13px; color: #7a6f63; margin-bottom: 12px; }
.cart-mini a {
  display: inline-block;
  padding: 8px 20px;
  background: var(--gold);
  color: #17130f;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
}
.cart-mini a:hover { filter: brightness(1.08); }

/* 中屏：隐藏快捷链接，保留搜索与购物车 */
@media (max-width: 1000px) {
  .topbar-links { display: none; }
  .topbar-inner { justify-content: flex-end; }
}


/* ===== 正大明品牌产品多级下拉（分类箭头 + 小类飞出菜单） ===== */
.dropdown-mega { min-width: 198px; text-align: left; }
.dropdown .dd-item { position: relative; }
.dropdown .dd-cat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-right: 14px;
  font-weight: 500;
}
.dropdown .dd-arrow {
  font-size: 1.05rem;
  line-height: 1;
  color: var(--gold);
  transition: transform 0.25s ease;
}
.dropdown .dd-item:hover > .dd-cat,
.dropdown .dd-item:focus-within > .dd-cat { color: var(--primary); }
.dropdown .dd-item:hover .dd-arrow,
.dropdown .dd-item:focus-within .dd-arrow { transform: translateX(3px); }
.dropdown .submenu {
  position: absolute;
  left: calc(100% + 1px);
  top: -6px;
  min-width: 148px;
  background: #fffdf9;
  border: 1px solid rgba(201, 168, 92, 0.25);
  border-left: 2px solid var(--gold);
  border-radius: 6px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.14);
  padding: 6px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-6px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 130;
}
.dropdown .dd-item:hover > .submenu,
.dropdown .dd-item:focus-within > .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}
.dropdown .submenu a { white-space: nowrap; }

/* 移动端：飞出菜单转为静态缩进子列表 */
@media (max-width: 768px) {
  .dropdown .dd-cat { justify-content: flex-start; }
  .dropdown .dd-arrow { margin-left: auto; }
  .dropdown .submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    min-width: 0;
    background: transparent;
    border: none;
    border-left: 2px solid rgba(212, 175, 55, 0.35);
    border-radius: 0;
    box-shadow: none;
    padding: 0 0 2px 10px;
    margin: 0 0 2px 10px;
  }
  .dropdown .submenu a { padding: 7px 12px; font-size: 0.82rem; }
}


/* 门店描述行 */
.store-desc {
  margin: 6px 0 4px;
  padding: 8px 12px;
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(45, 30, 18, 0.72);
  background: rgba(201, 168, 92, 0.08);
  border-left: 3px solid var(--gold);
  border-radius: 0 4px 4px 0;
  font-style: italic;
  text-indent: 0;
}

/* 天猫在售商品色样行 */
.sku-swatches { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 4px; }
.sku-swatches img { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border); background: var(--bg-warm); }
.sku-swatches img:hover { transform: scale(1.15); border-color: var(--gold); }
@media (max-width: 768px) { .sku-swatches img { width: 26px; height: 26px; } }

/* ===== 品牌产品分类页 / 总览页 ===== */
.bp-cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.bp-cat-grid .solution-card { min-height: 340px; }

.cat-chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 4px; }
.cat-chips a {
  padding: 8px 20px;
  border: 1px solid rgba(201,168,92,0.4);
  border-radius: 999px;
  font-size: 0.88rem;
  letter-spacing: 1px;
  color: var(--text);
  text-decoration: none;
  background: var(--white);
  transition: all 0.25s ease;
}
.cat-chips a:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.cat-chips a.active { background: var(--primary); border-color: var(--primary); color: var(--white); }

@media (max-width: 900px) { .bp-cat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) {
  .bp-cat-grid { grid-template-columns: 1fr; }
  .cat-chips { justify-content: center; }
}

/* ===== 顶栏分类下拉：小类收进下拉框（漆器 / 漆材料） ===== */
.topbar-links .tb-item { position: relative; display: flex; align-items: center; height: 38px; }
.topbar-links .tb-cat {
  display: flex;
  align-items: center;
  gap: 4px;
  color: rgba(255,255,255,0.78);
  padding: 0 7px;
  line-height: 38px;
  font-weight: 500;
  transition: color 0.2s ease;
}
.topbar-links .tb-cat:hover { color: #fff; }
.tb-caret { font-size: 9px; color: rgba(255,255,255,0.45); line-height: 1; transition: transform 0.2s ease; }
.tb-item:hover .tb-caret { transform: rotate(180deg); }
.topbar-links .tb-drop {
  position: absolute;
  top: 38px;
  left: -10px;
  min-width: 132px;
  background: #fffdf9;
  border: 1px solid rgba(201,168,92,0.25);
  border-radius: 0 0 10px 10px;
  box-shadow: 0 18px 44px rgba(0,0,0,0.16);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  z-index: 160;
}
.tb-item:hover .tb-drop { opacity: 1; visibility: visible; transform: translateY(0); }
.topbar-links .tb-drop a {
  display: block;
  line-height: 1.2;
  padding: 9px 18px;
  color: #5c5348;
  font-size: 12px;
  white-space: nowrap;
}
.topbar-links .tb-drop a:hover { color: var(--primary); background: rgba(201,168,92,0.10); }


/* ===== 移动端体验优化（2026-09-19） ===== */
.nav-caret { display: none; }

@media (max-width: 768px) {
  /* 1. 首屏不再占满整屏 */
  body .hero { height: 56vh; min-height: 400px; max-height: 520px; }
  .hero-title { font-size: 1.9rem; margin-bottom: 12px; }
  .hero-desc { font-size: 0.92rem; line-height: 1.75; margin-bottom: 22px; }
  .hero-kicker { font-size: 0.8rem; letter-spacing: 2px; margin-bottom: 10px; }
  .hero-cta { padding: 12px 24px; font-size: 0.9rem; }
  .hero-nav { bottom: 18px; }

  /* 2. 导航二级折叠（点箭头展开） */
  .nav-item { position: relative; width: 100%; }
  .nav-item > .nav-link { padding-right: 46px; }
  .nav-item .dropdown { display: none; }
  .nav-item.open .dropdown { display: block; }
  .nav-caret {
    display: flex; align-items: center; justify-content: center;
    position: absolute; top: 2px; right: 0;
    width: 44px; height: 44px;
    background: none; border: none; cursor: pointer;
    color: var(--primary); font-size: 1rem; line-height: 1;
  }
  .nav-caret .caret { display: inline-block; transition: transform 0.25s ease; }
  .nav-item.open .nav-caret .caret { transform: rotate(180deg); }

  /* 3. 区块留白收紧 */
  .section { padding: 52px 0; }
  .section-header { margin-bottom: 34px; }
  .section-desc { font-size: 0.92rem; }

  /* 4. 内页 banner 变矮 */
  body .page-banner { height: 200px; margin-top: 80px; }
  .page-banner h1 { font-size: 1.5rem; }
  .page-banner p { font-size: 0.85rem; }

  /* 5. 数据条保持三列 */
  .intro-stats { grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 22px; }
  .stat-number { font-size: 1.35rem; }
  .stat-label { font-size: 0.75rem; margin-top: 2px; }

  /* 6. 页脚折叠为手风琴 */
  .footer { padding: 40px 0 20px; }
  .footer-grid { gap: 0; }
  .footer-column { border-bottom: 1px solid rgba(255,255,255,0.08); }
  .footer-column h4 { position: relative; margin: 0; padding: 14px 0; cursor: pointer; }
  .footer-column h4::after {
    content: '+'; position: absolute; right: 0; top: 12px;
    font-size: 1.1rem; color: rgba(255,255,255,0.6);
  }
  .footer-column.open h4::after { content: '\2212'; }
  .footer-collapse { display: none; padding-bottom: 12px; }
  .footer-column.open .footer-collapse { display: block; }
  .footer-column a { display: block; padding: 7px 0; font-size: 0.9rem; }

  /* 7. 标题与卡片字号降一档 */
  h3 { font-size: 1.25rem; margin-bottom: 12px; }
  .news-card .info { padding: 14px; }
  .news-card .info h3,
  .brand-card h3,
  .solution-card h3,
  .coop-card h3 { font-size: 1.1rem; }

  /* 8. 品牌影片横向滑动 */
  .video-grid {
    display: flex; overflow-x: auto; gap: 12px;
    scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
    padding-bottom: 10px;
  }
  .video-player { flex: 0 0 78%; min-width: 78%; scroll-snap-align: start; }
}