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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: #FFFFFF;
}

:root {
  --sunshine-orange: #F5A623;
  --deep-sea-blue: #1A2A4F;
  --morning-gold: #D4AF37;
  --light-gray: #F8F9FA;
  --dark-gray: #212529;
  --medium-gray: #6C757D;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-sunshine-orange {
  color: #F5A623;
}

.text-deep-sea-blue {
  color: #1A2A4F;
}

.text-medium-gray {
  color: #6C757D;
  font-size: 14px
}

.text-dark-gray {
  color: #212529;
}

.text-green {
  color: #22C55E;
}

.bg-sunshine-orange {
  background: #F5A623;
}

.bg-deep-sea-blue {
  background: #1A2A4F;
}

.bg-light-gray {
  background: #F8F9FA;
}

.bg-white {
  background: white;
}

.btn-primary {
  background: #F5A623;
  color: white;
  padding: 14px 32px;
  border-radius: 4px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.3s;
  font-size: 16px;
}

.btn-primary:hover {
  background: #E8891F;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 166, 35, 0.3);
}

.btn-link {
  color: #F5A623;
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.3s;
  font-size: 16px;
}

.btn-link:hover {
  color: #E8891F;
  text-decoration: underline;
}

.card {
  background: white;
  border-radius: 4px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  transition: all 0.3s ease;
  background: transparent;
}

.navbar.scrolled {
  background: white;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.nav-logo {
  height: 40px;
  width: auto;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-icon-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
  color: white;
  transition: color 0.3s;
}

.navbar.scrolled .nav-icon-btn {
  color: #6C757D;
}

.nav-icon-btn:hover {
  color: #F5A623;
}

.nav-login {
  font-size: 15px;
  font-weight: 500;
  color: white;
  cursor: pointer;
  transition: color 0.3s;
}

.navbar.scrolled .nav-login {
  color: #212529;
}

.nav-login:hover {
  color: #F5A623;
}

.side-nav {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.side-nav-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  cursor: pointer;
}

.side-nav-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #D1D5DB;
  transition: all 0.3s;
}

.side-nav-item.active .side-nav-dot {
  background: #F5A623;
  transform: scale(1.4);
}

.side-nav-tooltip {
  position: absolute;
  right: 24px;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.3s;
  pointer-events: none;
}

.side-nav-item:hover .side-nav-tooltip {
  opacity: 1;
  transform: translateX(0);
}

.floating-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  padding: 16px 24px;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.floating-bar.visible {
  transform: translateY(0);
}

.quantity-selector {
  display: flex;
  align-items: center;
  border: 2px solid #E5E7EB;
  border-radius: 4px;
  overflow: hidden;
}

.quantity-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: #F8F9FA;
  cursor: pointer;
  font-size: 18px;
  transition: background 0.3s;
}

.quantity-btn:hover {
  background: #E5E7EB;
}

.quantity-input {
  width: 60px;
  height: 40px;
  border: none;
  text-align: center;
  font-size: 16px;
  font-weight: 500;
}

.sku-option {
  padding: 10px 20px;
  border: 2px solid #E5E7EB;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
  background: white;
  font-size: 14px;
}

.sku-option:hover {
  border-color: #F5A623;
}

.sku-option.selected {
  border-color: #F5A623;
  background: rgba(245, 166, 35, 0.1);
  color: #F5A623;
}

.grid {
  display: grid;
}

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

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

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: 8px;
}

.gap-3 {
  gap: 12px;
}

.gap-4 {
  gap: 16px;
}

.gap-5 {
  gap: 20px;
}

.gap-6 {
  gap: 24px;
}

.gap-8 {
  gap: 32px;
}

.gap-12 {
  gap: 48px;
}

.text-center {
  text-align: center;
}

.text-center-index {
  text-align: center;
  color: #1A2A4F;
  font-size: 30px;
  font-weight: 700
}

.text-sm {
  font-size: 14px;
}

.text-xl {
  font-size: 1.25rem;
}

.text-2xl {
  font-size: 1.5rem;
}

.text-3xl {
  font-size: 2rem;
}

.text-4xl {
  font-size: 2.25rem;
}

.text-5xl {
  font-size: 3rem;
}

.font-bold {
  font-weight: 700;
}

.font-semibold {
  font-weight: 500;
}

.mb-3 {
  margin-bottom: 12px;
}

.mb-4 {
  margin-bottom: 16px;
}

.mt-3 {
  margin-top: 12px;
}

.mt-12 {
  margin-top: 48px;
}

.pt-16 {
  padding-top: 64px;
}

.p-6 {
  padding: 24px;
}

.p-8 {
  padding: 32px;
}

h5 {
  padding-top: 30px;
  font-size: 26px;
  font-weight: 700;
  color: #1A2A4F;
  text-align: center;
}

h4 {
  font-size: 18px;
  color: #1A2A4F;
  margin-bottom: 4px;
  font-weight: 500;
}

.hero-video {
  height: 580px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #1A2A4F 0%, #2A3A5F 100%);
}

.video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(245, 166, 35, 0.15) 0%, transparent 50%, rgba(26, 42, 79, 0.7) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.35);
  z-index: 1;
}

.sunshine-effect {
  position: absolute;
  top: -30%;
  right: -10%;
  width: 60%;
  height: 160%;
  background: radial-gradient(ellipse at center, rgba(245, 166, 35, 0.25) 0%, transparent 70%);
  z-index: 2;
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  text-align: center;
  z-index: 3;
}

.hero-content h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 16px;
  color: white;
}

.hero-content p {
  font-size: 16px;
  letter-spacing: 4px;
  color: white;
}

.four-images {
  width: 100%;
}

.image-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
  padding: 12px 16px;
  color: white;
  font-size: 20px;
  font-weight: 500;
  text-align: center;
}

#goodsDetails .article-content img {
  display: block;
  margin: 0 auto;
  max-width: 100%;
}

.slider-thumbs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 0;
  margin-top: 8px;
  scrollbar-width: none;
}

.slider-thumbs::-webkit-scrollbar {
  display: none;
}

.slider-thumbs .thumb-item {
  flex: 0 0 auto;
  width: 80px;
  height: 80px;
  border: 2px solid transparent;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  opacity: 0.6;
  transition: all 0.2s ease;
}

.slider-thumbs .thumb-item:hover {
  opacity: 1;
  border-color: #27406E;
}

.slider-thumbs .thumb-item.active {
  opacity: 1;
  border-color: #F7D679;
  box-shadow: 0 0 0 2px rgba(247, 214, 121, 0.3);
}

.slider-thumbs .thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#painpoint {
  padding: 64px 24px;
}

.painpoint-cards {
  display: flex;
  gap: 20px;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
}

.painpoint-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 32px;
  background: white;
  border-radius: 4px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  flex: 1;
  justify-content: center;
  font-size: 16px;
}

#features {
  /*padding: 80px 0;*/
}

.specs-box {
  background: #F8F9FA;
  border-radius: 4px;
  padding: 32px;
  height: 100%;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid #E5E7EB;
  font-size: 15px;
}

.spec-item:last-child {
  border-bottom: none;
}


.reviews-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid #E5E7EB;
}

.beta-tag {
  font-size: 11px;
  background: linear-gradient(135deg, #F5A623 0%, #D4AF37 100%);
  color: white;
  padding: 3px 10px;
  border-radius: 20px;
}

.review-image-placeholder {
  width: 60px;
  height: 60px;
  background: #F8F9FA;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6C757D;
  font-size: 12px;
}


.bottom-spacer {
  height: 100px;
}

@media (max-width: 768px) {
  .side-nav {
    display: none;
  }

  .grid-cols-2 {
    grid-template-columns: 1fr !important;
  }

  .grid-cols-3 {
    grid-template-columns: 1fr !important;
  }

  .painpoint-cards {
    flex-direction: column;
  }

  .hero-content h1 {
    font-size: 32px;
  }

  .text-4xl {
    font-size: 1.5rem;
  }
}

.slider-video-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  background: #1A2A4F;
}

.slider-video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.slider-video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
}

.slider-video-overlay::before {
  content: '';
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.slider-video-overlay::after {
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
  border-left: 25px solid #1A2A4F;
  margin-left: 5px;
}

.slider-video-overlay:hover {
  background: rgba(0, 0, 0, 0.5);
}

.slider-video-overlay:hover::before {
  background: rgba(255, 255, 255, 1);
  transform: scale(1.1);
  transition: transform 0.2s ease;
}

/* ===== 面包屑 ===== */
.breadcrumb {
    display: flex; align-items: center; gap: 8px; padding: 20px 0 8px;
    font-size: 13px; color: #ADB5BD;
}
.breadcrumb a { color: #6C757D; }
.breadcrumb a:hover { color: #f4a61d; }
.breadcrumb .sep { color: #CED4DA; }


/*产品详情*/

.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* ===== 页头 ===== */
.header-placeholder { height: 110px; }
.site-header { position: fixed; left: 0; top: 0; width: 100%; z-index: 998; }
.top-bar {
    display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
    min-height: 36px; padding: 6px 40px 6px 60px;
    background: #f4a61d; color: rgba(255,255,255,0.88); font-size: 13px;
}
.top-bar-left { display: flex; gap: 24px; }
.top-bar-item {
    display: inline-flex; align-items: center; gap: 6px;
    color: rgba(255,255,255,0.9); transition: opacity 0.2s; font-size: 13px;
}
.top-bar-item:hover { color: #fff; }
.top-bar-right { display: flex; align-items: center; }
.lang-btn {
    background: transparent; border: 1px solid rgba(255,255,255,0.4); color: #fff;
    padding: 4px 14px; border-radius: 4px; font-size: 13px; cursor: pointer;
}
.lang-btn:hover { border-color: #fff; }

.main-nav {
    display: flex; align-items: center; height: 74px;
    background: #fff; padding: 0 60px; box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.nav-logo img { height: 40px; }
.nav-links { display: flex; align-items: center; gap: 4px; flex: 1; justify-content: center; list-style: none; }
.nav-links a {
    display: block; padding: 8px 18px; font-size: 14px; font-weight: 500;
    color: #212529; border-radius: 4px; transition: color 0.15s;
}
.nav-links a:hover, .nav-links a.active { color: #f4a61d; }
.nav-links a.active { background: rgba(244,166,29,0.08); }

/* ===== 侧边楼层导航 ===== */
.floor-nav {
    position: fixed; right: 20px; top: 50%; transform: translateY(-50%);
    z-index: 900; display: flex; flex-direction: column; gap: 4px;
}
.floor-nav a {
    display: flex; align-items: center; justify-content: center;
    width: 18px; height: 18px; border-radius: 50%;
    background: transparent; transition: all 0.2s;
    position: relative; font-size: 0; color: transparent; text-indent: -9999px;
}
.floor-nav a .dot { width: 8px; height: 8px; border-radius: 50%; background: #CED4DA; flex-shrink: 0; }
.floor-nav a:hover .dot, .floor-nav a.active .dot { background: #f4a61d; }
.floor-nav a:hover, .floor-nav a.active { background: transparent; }


/* ===== 产品主区 ===== */
.product-hero {
    display: flex; gap: 36px; background: #fff; border-radius: 4px;
    padding: 28px 36px; margin-bottom: 32px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.product-gallery { flex: 0 0 400px; }
.carousel-wrap {
    position: relative; width: 100%; aspect-ratio: 1/1; border-radius: 4px;
    overflow: hidden; background: #F1F3F5; margin-bottom: 10px;
}
.carousel-slides { display: flex; width: 100%; height: 100%; transition: transform 0.4s ease; }
.carousel-slides img { width: 100%; height: 100%; object-fit: cover; flex-shrink: 0; }
.carousel-btn {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 40px; height: 40px; border-radius: 50%; border: none;
    background: rgba(255,255,255,0.85); color: #1A2A4F; font-size: 18px;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: background 0.2s; z-index: 2;
}
.carousel-btn:hover { background: #fff; }
.carousel-btn.prev { left: 12px; }
.carousel-btn.next { right: 12px; }
.carousel-dots {
    position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
    display: flex; gap: 6px; z-index: 2;
}
.carousel-dots .dot {
    width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.5);
    cursor: pointer; transition: background 0.2s;
}
.carousel-dots .dot.active { background: #f4a61d; }

.gallery-thumbs { display: flex; gap: 8px; }
.gallery-thumbs .thumb {
    width: 56px; height: 56px; border-radius: 4px; overflow: hidden;
    background: #F1F3F5; cursor: pointer; border: 2px solid transparent;
    transition: border-color 0.2s; flex-shrink: 0;
}
.gallery-thumbs .thumb.active { border-color: #f4a61d; }
.gallery-thumbs .thumb img { width: 100%; height: 100%; object-fit: cover; }

.product-info { flex: 1; display: flex; flex-direction: column; }
.product-info .tag-row { display: flex; gap: 8px; margin-bottom: 12px; }
.tag {
    font-size: 11px; font-weight: 700; color: #fff; padding: 3px 10px;
    border-radius: 3px; letter-spacing: 0.04em;
}
.tag-hot { background: #1A2A4F; }
.tag-new { background: rgba(26,42,79,0.65); }
.tag-orange { background: #f4a61d; }
.product-info h1 {
    font-size: 24px; font-weight: 700; color: #1A2A4F;
    margin-bottom: 6px; letter-spacing: 0.02em;
}
.product-info .subtitle {
    font-size: 13px; color: #6C757D; margin-bottom: 10px; line-height: 1.5;
}
.product-info .price-row {
    display: flex; align-items: baseline; gap: 12px;
    padding: 12px 0; border-top: 1px solid #E9ECEF; border-bottom: 1px solid #E9ECEF;
    margin-bottom: 14px;
}
.price-current { font-size: 28px; font-weight: 800; color: #1A2A4F; }
.price-orig { font-size: 16px; color: #ADB5BD; text-decoration: line-through; }
.price-discount { font-size: 12px; color: #fff; background: #f4a61d; padding: 2px 8px; border-radius: 3px; font-weight: 600; }
.sku-selector { margin-bottom: 14px; }
.sku-selector h4 { font-size: 13px; font-weight: 600; color: #1A2A4F; margin-bottom: 8px; }
.sku-options { display: flex; gap: 10px; flex-wrap: wrap; }
.sku-opt {
    padding: 8px 20px; border: 2px solid #E9ECEF; border-radius: 4px;
    font-size: 13px; color: #495057; cursor: pointer; background: #fff;
    transition: all 0.2s; font-family: inherit;
}
.sku-opt:hover { border-color: #f4a61d; color: #f4a61d; }
.sku-opt.active { border-color: #f4a61d; background: rgba(244,166,29,0.06); color: #f4a61d; font-weight: 600; }
.highlights-list ul {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4px 20px; list-style: none; margin-bottom: 6px;
}
.highlights-list ul li {
    font-size: 13px; color: #495057; display: flex; align-items: center; gap: 6px;
}
.highlights-list ul li::before {
    content: ''; width: 5px; height: 5px; border-radius: 50%;
    background: #f4a61d; flex-shrink: 0;
}
.product-info .actions { display: flex; gap: 12px; margin-top: auto; }
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 12px 32px; border-radius: 8px; font-size: 15px; font-weight: 600;
    cursor: pointer; border: none; transition: all 0.3s; letter-spacing: 0.02em;
    font-family: inherit;
}
.btn-primary { background: #f4a61d; color: #fff; }
.btn-primary:hover { background: #db9a27; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(244,166,29,0.3); }
.btn-outline { background: #fff; color: #1A2A4F; border: 2px solid #1A2A4F; }
.btn-outline:hover { background: #1A2A4F; color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26,42,79,0.15); }

/* ===== 通用区块 ===== */
.section-block {
    background: #fff; border-radius: 4px; padding: 40px 44px;
    margin-bottom: 24px; box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.section-block .section-head {
    display: flex; align-items: center; gap: 12px; margin-bottom: 28px;
}
.section-block .section-num {
    width: 32px; height: 32px; border-radius: 50%;
    background: #1A2A4F; color: #fff; font-size: 14px; font-weight: 700;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.section-block .section-title {
    font-size: 22px; font-weight: 700; color: #1A2A4F; letter-spacing: 0.02em;
}

/* ===== 01 产品优势：实物图 + 卖点 ===== */
.advantage-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.advantage-card {
    border-radius: 4px; overflow: hidden; border: 1px solid #E9ECEF;
    transition: all 0.3s; background: #fff;
}
.advantage-card:hover {
    transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border-color: #f4a61d;
}
.advantage-card {
    width: 100%; aspect-ratio: 2/3; overflow: hidden; background: #F1F3F5;
}
.advantage-card  img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.advantage-card:hover img { transform: scale(1.04); }
.advantage-card  { padding: 16px 18px 100px; }
.advantage-card  p { font-size: 13px; color: #6C757D; line-height: 1.7;margin-top: 10px }

/* ===== 02 痛点 ===== */
.pain-solution { display: flex; gap: 32px; }
.pain-col, .solution-col { flex: 1; }
.pain-col h4 { color: #868E96; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.solution-col h4 { color: #f4a61d; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.pain-item, .solution-item {
    display: flex; align-items: flex-start; gap: 10px; padding: 14px 16px;
    border-radius: 4px; margin-bottom: 10px; font-size: 14px;
}
.pain-item { background: #F8F9FA; color: #495057; border-left: 3px solid #CED4DA; }
.solution-item { background: rgba(244,166,29,0.06); border-left: 3px solid #f4a61d; color: #1A2A4F; font-weight: 500; }
.pain-item .mark, .solution-item .mark { font-size: 16px; flex-shrink: 0; }

/* ===== 03 场景 ===== */
.scenario-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.scenario-card {
    position: relative; border-radius: 4px; overflow: hidden; aspect-ratio: 2/3; background: #E9ECEF;
}
.scenario-card img { width: 100%; height: 100%; object-fit: cover; background:#E9ECEF;display:flex;align-items:center;justify-content:center }

.scenario-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(26,42,79,0.82) 0%, transparent 60%);
    display: flex; align-items: flex-end; padding: 20px 24px;
}
.scenario-overlay h4 { color: #fff; font-size: 14px; font-weight: 700; }
.scenario-overlay span { color: rgba(255,255,255,0.8); font-size: 11px; margin-left: auto; }

/* ===== 产品说明 ===== */
.product-desc-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
    max-width: 700px; margin: 0 auto;
}
.product-desc-item {
    border-radius: 4px; overflow: hidden; background: #fff;
    border: 1px solid #E9ECEF; transition: transform 0.3s;
    display: flex; flex-direction: column;
}
.product-desc-item:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.product-desc-item .explain-img {
    width: 100%; aspect-ratio: 2/3; overflow: hidden; background: #F1F3F5;
}
.product-desc-item .explain-img img { width: 100%; height: 100%; object-fit: cover; }
.product-desc-item .explain-body {
    padding: 16px 18px 20px;
}
.product-desc-item .explain-body h4 {
    font-size: 15px; font-weight: 700; color: #1A2A4F; margin-bottom: 6px;
}
.product-desc-item .explain-body p {
    font-size: 13px; color: #6C757D; line-height: 1.7;
}


/* ===== 04 适用人群 ===== */
.audience-grid {
    display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
}
.audience-card {
    text-align: center; padding: 28px 14px;
    border: 1px solid #E9ECEF; border-radius: 4px; transition: all 0.3s;
}
.audience-card:hover {
    border-color: #1A2A4F; box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.audience-card .avatar {
    width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 12px;
    background: #F8F9FA; display: flex; align-items: center; justify-content: center;
    font-size: 26px;
}
.audience-card h5 { font-size: 14px; font-weight: 700; color: #1A2A4F; margin-bottom: 6px; }
.audience-card p { font-size: 12px; color: #868E96; line-height: 1.6; }

/* ===== 05 参数对比 ===== */
.param-compare { overflow-x: auto; }
.param-compare table { width: 100%; border-collapse: collapse; min-width: 600px; }
.param-compare th {
    padding: 12px 14px; font-size: 13px; font-weight: 700; text-align: center;
    border: 1px solid #E9ECEF; background: #F8F9FA; color: #868E96;
}
.param-compare th.highlight-col {
    background: #1A2A4F; color: #fff; font-size: 14px;
}
.param-compare th.star-col {
    background: linear-gradient(135deg, #f4a61d, #e8960a); color: #fff; font-size: 14px;
}
.param-compare td {
    padding: 12px 14px; font-size: 13px; border: 1px solid #E9ECEF;
    text-align: center; color: #495057;
}
.param-compare td:first-child { text-align: left; font-weight: 600; color: #1A2A4F; background: #FAFBFC; }
.param-compare td.best { color: #f4a61d; font-weight: 700; }
.param-compare td.weak { color: #ADB5BD; }
.param-compare .group-row td {
    background: #F1F3F5; font-size: 12px; font-weight: 700; color: #6C757D;
    text-align: left; padding: 8px 14px; letter-spacing: 0.04em;
}

/* ===== 06 实测 & 评价 ===== */
.test-tabs {
    display: flex; gap: 0; margin-bottom: 24px;
    border-bottom: 2px solid #E9ECEF;
}
.test-tab {
    padding: 10px 24px; font-size: 14px; font-weight: 500; color: #868E96;
    background: none; border: none; border-bottom: 2px solid transparent;
    margin-bottom: -2px; cursor: pointer; transition: color 0.2s, border-color 0.2s;
    font-family: inherit;
}
.test-tab.active { color: #1A2A4F; font-weight: 700; border-bottom-color: #f4a61d; }
.test-panel { display: none; }
.test-panel.active { display: block; }

.review-summary {
    display: flex; gap: 32px; padding: 24px; background: #F8F9FA; border-radius: 4px;
    margin-bottom: 20px; align-items: center;
}
.review-summary .score-big {
    font-size: 56px; font-weight: 800; color: #f4a61d; line-height: 1;
}
.review-summary .score-info { font-size: 14px; color: #6C757D; }
.review-summary .score-info strong { color: #1A2A4F; }
.review-bars { flex: 1; }
.review-bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; font-size: 12px; }
.review-bar-row .stars-label { width: 50px; color: #6C757D; text-align: right; }
.review-bar-row .bar-track { flex: 1; height: 6px; background: #E9ECEF; border-radius: 3px; overflow: hidden; }
.review-bar-row .bar-fill { height: 100%; background: #f4a61d; border-radius: 3px; }

.review-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.review-card {
    padding: 20px 24px; border: 1px solid #E9ECEF; border-radius: 4px;
    display: flex; flex-direction: column;
}
.review-card .review-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.review-card .review-avatar {
    width: 36px; height: 36px; border-radius: 50%; background: #F8F9FA;
    display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.review-card .review-name { font-size: 14px; font-weight: 600; color: #1A2A4F; }
.review-card .review-date { font-size: 12px; color: #ADB5BD; margin-left: auto; }
.review-card .stars { color: #f4a61d; font-size: 12px; }
.review-card .review-text { font-size: 13px; color: #495057; line-height: 1.8; }
.review-card .review-img {
    width: 100px; height: 100px; overflow: hidden; border-radius: 4px;
    background: #F1F3F5; margin-top: 12px; cursor: pointer;
}
.review-card .review-img img { width: 100%; height: 100%; object-fit: cover; }
.review-card .review-imgs { display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto; padding-top: 12px; }
.review-card .review-placeholder {
    width: 100px; height: 100px; border-radius: 4px; background: #E9ECEF;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; color: #ADB5BD;
}

/* ===== 图片放大遮罩 ===== */
.lightbox-overlay {
    position: fixed; inset: 0; z-index: 9999;
    background: rgba(0,0,0,0.88);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
}
.lightbox-overlay img {
    max-width: 90vw; max-height: 90vh;
    object-fit: contain; border-radius: 4px;
}


.test-stats { display: flex; gap: 24px; margin-bottom: 24px; }
.test-stat {
    flex: 1; text-align: center; padding: 24px;
    border-radius: 4px; background: #F8F9FA;
}
.test-stat .stat-num { font-size: 28px; font-weight: 800; color: #f4a61d; }
.test-stat .stat-label { font-size: 13px; color: #868E96; margin-top: 4px; }


/* ===== 底部吸附浮层 ===== */
.sticky-bar {
    position: fixed; bottom: 0; left: 0; width: 100%; z-index: 999;
    background: #fff; box-shadow: 0 -2px 16px rgba(0,0,0,0.10);
    display: none; align-items: center; justify-content: space-between;
    padding: 12px 60px; min-height: 84px;
}
.sticky-bar.visible { display: flex; }
.sticky-bar-left { display: flex; align-items: center; gap: 20px; }
.sticky-bar-product-name { font-size: 14px; font-weight: 600; color: #1A2A4F; white-space: nowrap; }
.sticky-bar-sku { display: flex; gap: 8px; }
.sticky-bar-sku-btn {
    padding: 5px 16px; border: 1.5px solid #E9ECEF; border-radius: 4px;
    font-size: 13px; color: #495057; background: #fff; cursor: pointer;
    transition: all 0.2s; font-family: inherit;
}
.sticky-bar-sku-btn:hover { border-color: #f4a61d; color: #f4a61d; }
.sticky-bar-sku-btn.active { border-color: #f4a61d; background: rgba(244,166,29,0.06); color: #f4a61d; font-weight: 600; }
.sticky-bar-right { display: flex; align-items: center; gap: 16px; }
.sticky-bar-price { font-size: 22px; font-weight: 800; color: #f4a61d; white-space: nowrap; }
.sticky-bar-qty { display: flex; align-items: center; gap: 0; border: 1px solid #E9ECEF; border-radius: 4px; overflow: hidden; }
.sticky-bar-qty button {
    width: 32px; height: 32px; border: none; background: #F8F9FA;
    font-size: 16px; color: #495057; cursor: pointer; font-family: inherit;
    display: flex; align-items: center; justify-content: center;
}
.sticky-bar-qty button:hover { background: #E9ECEF; }
.sticky-bar-qty .qty-num {
    width: 40px; height: 32px; display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 600; color: #1A2A4F; border-left: 1px solid #E9ECEF; border-right: 1px solid #E9ECEF;
}
.sticky-bar .btn-cart {
    padding: 10px 28px; border-radius: 6px; font-size: 14px; font-weight: 600;
    background: #f4a61d; color: #fff; border: none; cursor: pointer;
    transition: all 0.2s; font-family: inherit; white-space: nowrap;
}
.sticky-bar .btn-cart:hover { background: #db9a27; }

/* ===== 响应式 ===== */