/* roulang page: index */
:root {
  --bg-primary: #0B1220;
  --bg-secondary: #0F1A2E;
  --bg-card: rgba(255,255,255,0.05);
  --bg-card-hover: rgba(255,255,255,0.09);
  --bg-glass: rgba(13,20,35,0.5);
  --text-primary: #EAF2FF;
  --text-secondary: #A7B8D9;
  --text-muted: #7E8FAD;
  --accent: #F5B942;
  --accent-bright: #FFC95E;
  --accent-dark: #F5A623;
  --gradient-accent: linear-gradient(135deg, #FFC95E 0%, #F5A623 100%);
  --border-glass: 1px solid rgba(255,255,255,0.12);
  --border-gold: 1px solid rgba(245,185,66,0.35);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-full: 999px;
  --shadow-default: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover: 0 12px 40px rgba(245,185,66,0.16);
  --shadow-gold: 0 0 20px rgba(245,185,66,0.35);
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --section-space: 100px;
  --container-w: 1200px;
  --gutter: 24px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 1;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  line-height: 1.4;
  min-height: 44px;
}
.btn:active {
  transform: scale(0.98);
}
.btn-primary {
  background: var(--gradient-accent);
  color: #0B1220;
  box-shadow: var(--shadow-gold);
}
.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 30px rgba(245,185,66,0.55);
  transform: translateY(-2px);
}
.btn-outline {
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(8px);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(245,185,66,0.5);
  transform: translateY(-2px);
}
.btn-lg {
  padding: 18px 42px;
  font-size: 18px;
}
.btn-sm {
  padding: 10px 20px;
  font-size: 14px;
  min-height: 40px;
}
.section {
  padding: var(--section-space) 0;
  position: relative;
}
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  background: rgba(245,185,66,0.12);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.section-head p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto;
}
/* ============ Header / Nav ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13,20,35,0.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
.site-header.scrolled {
  background: rgba(13,20,35,0.92);
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border-radius: 10px;
  color: #0B1220;
  font-size: 16px;
  box-shadow: 0 0 16px rgba(245,185,66,0.3);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent-bright);
  letter-spacing: 1px;
}
.logo-badge {
  font-size: 12px;
  color: var(--text-secondary);
  background: rgba(245,185,66,0.12);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(245,185,66,0.25);
  font-weight: 500;
  letter-spacing: 0.5px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  padding: 10px 18px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: color 0.3s ease, background 0.3s ease;
  position: relative;
}
.nav-link:hover {
  color: var(--accent-bright);
  background: rgba(245,185,66,0.06);
}
.nav-link.active {
  color: var(--accent);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 2px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.icon-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-secondary);
  font-size: 16px;
  transition: all 0.3s ease;
  background: rgba(255,255,255,0.05);
}
.icon-btn:hover {
  color: var(--accent);
  background: rgba(245,185,66,0.1);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,18,32,0.88) 0%, rgba(11,18,32,0.68) 50%, rgba(15,26,46,0.85) 100%);
  z-index: 1;
}
.hero-content {
  text-align: center;
  z-index: 2;
  max-width: 800px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245,185,66,0.12);
  border: 1px solid rgba(245,185,66,0.3);
  color: var(--accent-bright);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}
.hero-badge i {
  font-size: 12px;
}
.hero-content h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #FFFFFF 20%, var(--accent-bright) 60%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 40px rgba(245,185,66,0.15);
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.hero-stats .stat {
  text-align: center;
}
.hero-stats .stat strong {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
}
.hero-stats .stat span {
  font-size: 14px;
  color: var(--text-muted);
}
.scroll-down {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 20px;
  animation: bounceDown 2s infinite;
  z-index: 2;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  transition: all 0.3s ease;
}
.scroll-down:hover {
  color: var(--accent);
  border-color: rgba(245,185,66,0.4);
}
@keyframes bounceDown {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}
/* ============ Products ============ */
.products {
  background: var(--bg-primary);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(245,185,66,0.35);
}
.product-cover {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.product-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-card:hover .product-cover img {
  transform: scale(1.05);
}
.product-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(11,18,32,0.75);
  backdrop-filter: blur(8px);
  color: var(--accent-bright);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(245,185,66,0.3);
  letter-spacing: 1px;
}
.product-info {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-info h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.4;
}
.product-info p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.product-price {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}
.product-price small {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
  margin-right: 2px;
}
.btn-buy {
  background: rgba(245,185,66,0.12);
  color: var(--accent-bright);
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid rgba(245,185,66,0.25);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
}
.btn-buy:hover {
  background: var(--gradient-accent);
  color: #0B1220;
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.btn-buy i {
  font-size: 12px;
}
/* ============ Testimonials ============ */
.testimonials {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}
.testimonials::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245,185,66,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.testimonials-viewport {
  max-width: 900px;
  margin: 0 auto;
  overflow: hidden;
  padding: 20px 0;
}
.testimonials-track {
  display: flex;
  gap: 32px;
  transition: transform 0.55s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.testimonial-slide {
  flex: 0 0 70%;
  opacity: 0.45;
  transform: scale(0.92);
  transition: all 0.55s ease;
}
.testimonial-slide.active {
  opacity: 1;
  transform: scale(1);
}
.testimonial-card {
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: relative;
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}
.testimonial-slide.active .testimonial-card {
  border-color: rgba(245,185,66,0.4);
  box-shadow: var(--shadow-hover);
}
.testimonial-stars {
  color: var(--accent);
  font-size: 15px;
  margin-bottom: 16px;
  letter-spacing: 3px;
}
.testimonial-card blockquote {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
  font-style: normal;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}
.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0B1220;
  font-size: 20px;
  font-weight: 700;
  flex-shrink: 0;
}
.testimonial-author-info .name {
  font-weight: 600;
  font-size: 15px;
  color: var(--text-primary);
}
.testimonial-author-info .role {
  font-size: 13px;
  color: var(--text-muted);
}
.testimonials-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 32px;
}
.carousel-arrow {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-secondary);
  font-size: 16px;
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.carousel-arrow:hover {
  color: var(--accent);
  border-color: rgba(245,185,66,0.4);
  background: rgba(245,185,66,0.1);
}
.carousel-dots {
  display: flex;
  gap: 8px;
}
.carousel-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  transition: all 0.3s ease;
  cursor: pointer;
}
.carousel-dots .dot.active {
  background: var(--accent);
  width: 24px;
  border-radius: 4px;
}
/* ============ Guarantee ============ */
.guarantee-bar {
  background: var(--bg-primary);
  padding: 40px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.guarantee-item {
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.guarantee-item:hover {
  border-color: rgba(245,185,66,0.3);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.guarantee-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(245,185,66,0.12);
  border: 1px solid rgba(245,185,66,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 20px;
  flex-shrink: 0;
}
.guarantee-item .text {
  font-weight: 600;
  font-size: 15px;
  color: var(--text-primary);
}
.guarantee-item .sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}
/* ============ CTA Section ============ */
.cta-section {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}
.cta-section .cta-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.cta-section .cta-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,18,32,0.92), rgba(11,18,32,0.75));
}
.cta-panel {
  position: relative;
  z-index: 2;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 24px;
  backdrop-filter: blur(20px) saturate(130%);
  -webkit-backdrop-filter: blur(20px) saturate(130%);
  padding: 64px;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
  box-shadow: var(--shadow-default);
}
.cta-panel h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
}
.cta-panel p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
/* ============ News ============ */
.news {
  background: var(--bg-primary);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.news-card {
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(12px);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(245,185,66,0.3);
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.news-cat {
  background: rgba(245,185,66,0.12);
  color: var(--accent-bright);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(245,185,66,0.2);
}
.news-time {
  font-size: 13px;
  color: var(--text-muted);
}
.news-card h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
}
.news-card h3 a {
  transition: color 0.3s ease;
}
.news-card h3 a:hover {
  color: var(--accent);
}
.news-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  flex: 1;
}
.news-link {
  font-size: 14px;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  transition: gap 0.3s ease;
  align-self: flex-start;
}
.news-link:hover {
  gap: 10px;
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 24px;
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  font-size: 15px;
}
.news-empty i {
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--accent);
  display: block;
  opacity: 0.5;
}
/* ============ FAQ ============ */
.faq-section {
  background: var(--bg-secondary);
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: var(--radius-lg);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  backdrop-filter: blur(10px);
}
.faq-item:hover {
  border-color: rgba(245,185,66,0.2);
}
.faq-item.open {
  border-color: rgba(245,185,66,0.35);
  box-shadow: var(--shadow-hover);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 28px;
  cursor: pointer;
  transition: color 0.3s ease;
}
.faq-question h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  padding-right: 16px;
}
.faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.4s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: var(--accent);
  border-color: rgba(245,185,66,0.4);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease;
}
.faq-answer-inner {
  padding: 0 28px 22px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
  border-left: 3px solid var(--accent);
  margin-left: 28px;
  margin-right: 28px;
  padding-left: 16px;
  padding-bottom: 20px;
}
.faq-item.open .faq-answer {
  max-height: 300px;
}
/* ============ Footer ============ */
.site-footer {
  background: rgba(5,10,20,0.95);
  border-top: 1px solid rgba(245,185,66,0.2);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent-bright);
  letter-spacing: 1px;
  display: block;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: 2px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 2px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.3s ease, padding-left 0.3s ease;
}
.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.footer-contact li i {
  color: var(--accent);
  font-size: 13px;
  width: 18px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a {
  color: var(--text-muted);
  transition: color 0.3s ease;
}
.footer-bottom a:hover {
  color: var(--accent);
}
/* ============ Responsive ============ */
@media (max-width: 1200px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}
@media (max-width: 1024px) {
  :root {
    --section-space: 80px;
  }
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonial-slide {
    flex-basis: 80%;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}
@media (max-width: 768px) {
  :root {
    --section-space: 56px;
  }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(11,18,32,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 4px;
    transform: translateY(-130%);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    z-index: 999;
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .nav-link {
    display: block;
    width: 100%;
    padding: 14px 16px;
    font-size: 17px;
  }
  .nav-link.active::after {
    left: 16px;
    right: auto;
    width: 24px;
  }
  .hamburger {
    display: flex;
  }
  .header-inner {
    height: 64px;
  }
  .hero {
    min-height: 90vh;
    padding-top: 100px;
  }
  .hero-content h1 {
    font-size: 32px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .hero-actions .btn {
    width: 200px;
  }
  .hero-stats {
    gap: 24px;
  }
  .hero-stats .stat strong {
    font-size: 22px;
  }
  .product-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-viewport {
    padding: 10px 0;
  }
  .testimonial-slide {
    flex-basis: 90%;
  }
  .testimonial-card {
    padding: 24px;
  }
  .guarantee-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .guarantee-item {
    padding: 18px;
    flex-direction: column;
    text-align: center;
  }
  .cta-panel {
    padding: 40px 24px;
  }
  .cta-panel h2 {
    font-size: 24px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  .cta-actions .btn {
    width: 200px;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .section-head h2 {
    font-size: 26px;
  }
}
@media (max-width: 520px) {
  .btn-lg {
    padding: 14px 28px;
    font-size: 16px;
    width: 100%;
    max-width: 280px;
  }
  .hero-actions .btn,
  .cta-actions .btn {
    width: 100%;
    max-width: 280px;
  }
  .logo-text {
    font-size: 17px;
  }
  .logo-badge {
    display: none;
  }
  .header-actions .btn-sm {
    display: none;
  }
  .testimonial-slide {
    flex-basis: 100%;
  }
  .carousel-arrow {
    width: 40px;
    height: 40px;
  }
  .guarantee-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .guarantee-item {
    padding: 14px 10px;
  }
  .guarantee-item .text {
    font-size: 13px;
  }
  .guarantee-item .sub {
    display: none;
  }
  .product-cover {
    height: 180px;
  }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --bg-primary: #0B1220;
  --bg-secondary: #0F1A2E;
  --bg-deep: #050A14;
  --bg-card: rgba(255,255,255,0.045);
  --bg-card-hover: rgba(255,255,255,0.08);
  --text-primary: #EAF2FF;
  --text-secondary: #A7B8D9;
  --text-muted: #7E8FAD;
  --gold: #F5B942;
  --gold-bright: #FFC95E;
  --gold-deep: #F5A623;
  --success: #68D391;
  --warning: #F6AD55;
  --border-glass: rgba(255,255,255,0.12);
  --border-hairline: rgba(255,255,255,0.07);
  --radius-xl: 28px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-default: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover: 0 12px 44px rgba(245,185,66,0.16);
  --shadow-btn: 0 0 20px rgba(245,185,66,0.45);
  --container-w: 1200px;
  --header-h: 72px;
  --spacing-section: 96px;
  --spacing-mobile: 56px;
  --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--text-secondary); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--gold-bright); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
input, textarea { font-family: inherit; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 26px;
  min-height: 46px;
  transition: all .28s ease;
  letter-spacing: .03em;
}
.btn:active { transform: scale(.98); }
.btn-primary {
  background: linear-gradient(135deg, var(--gold-bright), var(--gold-deep));
  color: #1A1405;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  filter: brightness(1.08);
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(245,185,66,0.55);
}
.btn-secondary {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  color: var(--gold-bright);
  border-color: rgba(245,185,66,0.4);
  transform: translateY(-2px);
}
.btn-sm { padding: 9px 20px; font-size: 14px; min-height: 42px; }
.btn-lg { padding: 15px 38px; font-size: 16px; min-height: 52px; border-radius: var(--radius-lg); }

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(13,20,35,0.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-hairline);
  transition: background .35s ease, box-shadow .35s ease;
}
.site-header.scrolled {
  background: rgba(13,20,35,0.92);
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
  border-bottom-color: rgba(255,255,255,0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 24px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold-deep));
  border-radius: 10px;
  color: #1A1405;
  font-size: 16px;
  box-shadow: 0 0 14px rgba(245,185,66,0.35);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--gold-bright);
  letter-spacing: .02em;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.main-nav .nav-link {
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  transition: color .25s ease, background .25s ease;
}
.main-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold-bright), var(--gold-deep));
  transform: scaleX(0);
  transition: transform .3s ease;
}
.main-nav .nav-link:hover,
.main-nav .nav-link.active {
  color: var(--gold-bright);
  background: rgba(255,255,255,0.04);
}
.main-nav .nav-link:hover::after,
.main-nav .nav-link.active::after {
  transform: scaleX(1);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-btn {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 15px;
  border: 1px solid var(--border-hairline);
  background: rgba(255,255,255,0.04);
  transition: all .25s ease;
}
.search-btn:hover {
  color: var(--gold-bright);
  border-color: rgba(245,185,66,0.4);
  background: rgba(255,255,255,0.08);
}
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-hairline);
  background: rgba(255,255,255,0.04);
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all .3s ease;
}
.hamburger.active span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.hamburger.active span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.breadcrumb a { color: var(--text-muted); transition: color .25s ease; }
.breadcrumb a:hover { color: var(--gold-bright); }
.breadcrumb .sep { opacity: .6; }
.breadcrumb .current { color: var(--text-secondary); }

/* ===== 文章页 ===== */
.article-wrap {
  position: relative;
  padding-top: var(--header-h);
  background:
    linear-gradient(180deg, rgba(11,18,32,0.92) 0%, rgba(11,18,32,0.88) 40%, var(--bg-primary) 100%),
    url('/assets/images/backpic/back-2.png') center top / cover no-repeat;
}
.article-hero {
  padding: 64px 0 48px;
  position: relative;
}
.article-hero-inner {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}
.article-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: rgba(245,185,66,0.12);
  border: 1px solid rgba(245,185,66,0.3);
  color: var(--gold-bright);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 22px;
}
.article-hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: .01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  font-size: 14px;
  color: var(--text-muted);
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.article-meta i { color: var(--gold); opacity: .7; }
.article-hero-divider {
  width: 64px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 36px auto 0;
  border-radius: 3px;
}

/* ===== 正文区 ===== */
.article-main {
  padding: 0 0 var(--spacing-section);
}
.article-body {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xl);
  padding: 52px 56px;
  backdrop-filter: blur(14px);
  position: relative;
}
.article-body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 56px;
  right: 56px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(245,185,66,0.5), transparent);
}
.article-excerpt {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  border-left: 3px solid var(--gold);
  padding: 18px 24px;
  margin-bottom: 40px;
  background: rgba(245,185,66,0.05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.article-content {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.article-content p { margin-bottom: 1.6em; }
.article-content h2 {
  font-size: 26px;
  color: var(--text-primary);
  margin: 1.8em 0 .8em;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-hairline);
  font-weight: 700;
}
.article-content h3 {
  font-size: 21px;
  color: var(--text-primary);
  margin: 1.6em 0 .6em;
  font-weight: 600;
}
.article-content blockquote {
  border-left: 4px solid var(--gold);
  background: rgba(255,255,255,0.025);
  padding: 20px 28px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 16px;
  color: var(--text-secondary);
  font-style: italic;
  margin: 1.8em 0;
}
.article-content blockquote p { margin-bottom: 0; }
.article-content ul,
.article-content ol {
  margin: 1.4em 0;
  padding-left: 1.2em;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li {
  margin-bottom: .6em;
  color: var(--text-secondary);
}
.article-content li::marker { color: var(--gold); }
.article-content a { color: var(--gold-bright); border-bottom: 1px solid rgba(245,185,66,0.4); }
.article-content a:hover { color: var(--gold); border-bottom-color: var(--gold); }
.article-content img {
  border-radius: var(--radius-lg);
  margin: 1.8em 0;
  box-shadow: var(--shadow-default);
}
.article-content strong {
  color: var(--text-primary);
  font-weight: 600;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--border-hairline);
}
.tag-pill {
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-hairline);
  color: var(--text-secondary);
  font-size: 13px;
  transition: all .25s ease;
}
.tag-pill:hover {
  border-color: rgba(245,185,66,0.45);
  color: var(--gold-bright);
  background: rgba(245,185,66,0.08);
}

/* ===== 文章不存在 ===== */
.article-empty {
  text-align: center;
  padding: 100px 24px;
  max-width: 600px;
  margin: 0 auto;
}
.empty-icon {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--gold);
  background: rgba(245,185,66,0.1);
  border: 1px solid rgba(245,185,66,0.2);
  margin: 0 auto 28px;
}
.article-empty h2 {
  font-size: 26px;
  margin-bottom: 16px;
}
.article-empty p {
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* ===== 相关阅读 ===== */
.related-section {
  padding: var(--spacing-section) 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
}
.section-title {
  text-align: center;
  margin-bottom: 48px;
}
.section-title .section-label {
  display: inline-block;
  font-size: 13px;
  color: var(--gold-bright);
  letter-spacing: .14em;
  margin-bottom: 10px;
  font-weight: 600;
}
.section-title h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--text-primary);
}
.section-title p {
  color: var(--text-muted);
  font-size: 15px;
  margin-top: 10px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-6px);
  border-color: rgba(245,185,66,0.4);
  box-shadow: var(--shadow-hover);
  background: var(--bg-card-hover);
}
.related-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-secondary);
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.related-card:hover .related-img img { transform: scale(1.04); }
.related-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.related-body .badge {
  align-self: flex-start;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  color: var(--gold-bright);
  background: rgba(245,185,66,0.1);
  border: 1px solid rgba(245,185,66,0.25);
}
.related-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  transition: color .25s ease;
}
.related-card:hover .related-body h3 { color: var(--gold-bright); }
.related-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}
.related-body .related-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-hairline);
  padding-top: 14px;
}
.related-meta .read-more {
  color: var(--gold);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ===== 返回入口 ===== */
.back-section {
  padding: 56px 0;
}
.back-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== CTA ===== */
.page-cta {
  position: relative;
  padding: 100px 0;
  background:
    linear-gradient(135deg, rgba(11,18,32,0.92), rgba(15,26,46,0.88)),
    url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
  border-top: 1px solid var(--border-hairline);
  text-align: center;
}
.cta-inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 56px 48px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(14px);
}
.cta-inner h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--text-primary);
}
.cta-inner h2 span {
  color: var(--gold-bright);
}
.cta-inner p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 32px;
}
.cta-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.site-footer {
  background: rgba(5,10,20,0.96);
  border-top: 1px solid rgba(245,185,66,0.2);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--gold-bright);
  display: block;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.footer-col h4 {
  font-size: 13px;
  color: var(--text-primary);
  letter-spacing: .18em;
  font-weight: 700;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color .25s ease, padding-left .25s ease;
}
.footer-col ul li a:hover {
  color: var(--gold-bright);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}
.footer-contact li i {
  color: var(--gold);
  width: 16px;
  font-size: 13px;
}
.footer-bottom {
  border-top: 1px solid var(--border-hairline);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a {
  color: var(--text-muted);
}
.footer-bottom a:hover {
  color: var(--gold-bright);
}

/* ===== 空态 ===== */
.empty-block {
  text-align: center;
  padding: 32px;
  color: var(--text-muted);
}

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .container { padding: 0 32px; }
  .related-grid { gap: 20px; }
}
@media (max-width: 991px) {
  .container { padding: 0 24px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .article-body { padding: 40px 36px; }
}
@media (max-width: 767px) {
  :root {
    --spacing-section: 56px;
  }
  .container { padding: 0 20px; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(13,20,35,0.97);
    flex-direction: column;
    align-items: center;
    padding: 20px 24px 32px;
    gap: 8px;
    border-bottom: 1px solid var(--border-glass);
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav .nav-link {
    width: 100%;
    text-align: center;
    font-size: 17px;
    padding: 14px 16px;
  }
  .main-nav .nav-link::after { display: none; }
  .hamburger { display: flex; }
  .header-actions .btn { display: none; }
  .article-hero { padding: 40px 0 36px; }
  .article-hero h1 { font-size: 30px; }
  .article-body { padding: 32px 24px; border-radius: var(--radius-lg); }
  .article-content { font-size: 16px; }
  .article-excerpt { font-size: 15px; padding: 14px 18px; }
  .related-grid { grid-template-columns: 1fr; }
  .section-title h2 { font-size: 26px; }
  .cta-inner { padding: 40px 24px; }
  .cta-inner h2 { font-size: 26px; }
  .back-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .article-meta { gap: 10px; font-size: 13px; }
}
@media (max-width: 519px) {
  .header-actions .search-btn { display: none; }
  .brand-logo .logo-text { font-size: 17px; }
  .logo-icon { width: 34px; height: 34px; font-size: 14px; }
  .article-hero h1 { font-size: 26px; }
  .related-body { padding: 18px; }
  .breadcrumb { font-size: 13px; margin-bottom: 20px; }
}

/* roulang page: category1 */
:root{
  --bg-0:#050A14;
  --bg-1:#0B1220;
  --bg-2:#0F1A2E;
  --card:rgba(255,255,255,.045);
  --card-border:rgba(255,255,255,.12);
  --text:#EAF2FF;
  --text-2:#A7B8D9;
  --text-3:#7E8FAD;
  --gold:#F5B942;
  --gold-2:#FFC95E;
  --gold-grad:linear-gradient(135deg,#FFC95E,#F5A623);
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 32px rgba(0,0,0,.35);
  --shadow-gold:0 12px 40px rgba(245,185,66,.15);
  --transition:.25s;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:
    radial-gradient(circle at 18% 18%,rgba(245,185,66,.05),transparent 26%),
    radial-gradient(circle at 85% 82%,rgba(90,140,255,.07),transparent 30%),
    linear-gradient(180deg,#0B1220 0%,#0F1A2E 100%);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button,input{font-family:inherit}
::selection{background:rgba(245,185,66,.3)}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
a:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* ===== 导航 ===== */
.main-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  background:rgba(11,18,32,.5);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .35s,box-shadow .35s;
}
.main-header.scrolled{
  background:rgba(5,10,20,.94);
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:74px;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  gap:20px;
}
.brand{
  font-size:20px;
  font-weight:800;
  color:var(--gold-2);
  letter-spacing:1px;
  white-space:nowrap;
  transition:color .25s;
}
.brand:hover{color:#fff}
.nav-right{display:flex;align-items:center;gap:14px}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
  padding:10px 2px;
  transition:color .25s;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--gold);
  border-radius:2px;
  transition:width .3s;
}
.nav-link:hover,.nav-link.active{color:var(--gold-2)}
.nav-link.active::after{width:100%}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--gold-grad);
  color:#1A1205;
  font-size:14px;
  font-weight:700;
  padding:10px 20px;
  border-radius:12px;
  min-height:44px;
  white-space:nowrap;
  box-shadow:0 0 18px rgba(245,185,66,.3);
  transition:transform .25s,box-shadow .25s,filter .25s;
}
.nav-cta:hover{
  transform:translateY(-2px);
  box-shadow:0 0 26px rgba(245,185,66,.5);
  filter:brightness(1.05);
}
.burger{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:12px;
  cursor:pointer;
  padding:0 10px;
}
.burger span{
  display:block;
  height:2px;
  background:#EAF2FF;
  border-radius:2px;
  transition:all .3s;
}
.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 分类 Hero ===== */
.category-hero{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:88vh;
  padding:140px 0 80px;
  text-align:center;
  background-color:var(--bg-1);
  background-image:linear-gradient(180deg, rgba(11,18,32,.78), rgba(5,10,20,.96)), url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
}
.category-hero .container{position:relative;z-index:2}
.hero-eyebrow{
  display:inline-block;
  padding:8px 18px;
  border:1px solid rgba(245,185,66,.45);
  border-radius:999px;
  color:var(--gold);
  font-size:14px;
  letter-spacing:3px;
  background:rgba(245,185,66,.08);
  margin-bottom:22px;
}
.category-hero h1{
  font-size:52px;
  font-weight:800;
  line-height:1.2;
  background:linear-gradient(135deg,#FFFFFF,var(--gold-2));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  margin-bottom:18px;
}
.breadcrumb{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--text-2);transition:color .2s}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb .sep{color:var(--text-3)}
.hero-sub{
  max-width:680px;
  margin:0 auto 36px;
  font-size:18px;
  color:var(--text-2);
  line-height:1.8;
}
.hero-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.btn-primary,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  font-size:16px;
  font-weight:700;
  min-height:48px;
  padding:14px 32px;
  cursor:pointer;
  transition:transform .25s,box-shadow .25s,background .25s,border-color .25s;
}
.btn-primary{
  background:var(--gold-grad);
  color:#1A1205;
  border:0;
  box-shadow:0 0 20px rgba(245,185,66,.45);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 28px rgba(245,185,66,.65);
  background:linear-gradient(135deg,#FFD678,#F5B942);
}
.btn-ghost{
  background:rgba(255,255,255,.06);
  color:var(--text);
  border:1px solid rgba(255,255,255,.25);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.12);
  border-color:var(--gold);
  transform:translateY(-2px);
}
.btn-primary:active,.btn-ghost:active,.nav-cta:active{transform:scale(.98)}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  max-width:840px;
  margin:56px auto 0;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
  border-radius:20px;
  padding:24px 12px;
  backdrop-filter:blur(14px);
}
.stat-item{padding:8px 12px;border-right:1px solid rgba(255,255,255,.1)}
.stat-item:last-child{border-right:0}
.stat-item strong{
  display:block;
  font-size:30px;
  font-weight:800;
  color:var(--gold-2);
  line-height:1.2;
}
.stat-item span{font-size:14px;color:var(--text-2)}

/* ===== 通用板块 ===== */
.section{padding:100px 0}
.section-head{
  max-width:720px;
  margin:0 auto 52px;
  text-align:center;
}
.section-tag{
  display:block;
  font-size:13px;
  letter-spacing:3px;
  color:var(--gold);
  margin-bottom:14px;
  font-weight:600;
}
.section-head h2{
  font-size:34px;
  font-weight:800;
  line-height:1.3;
}
.section-head p{
  margin-top:14px;
  color:var(--text-2);
  font-size:16px;
}

/* ===== 精选 Banner ===== */
.intro-section{padding:80px 0 20px}
.intro-card{
  position:relative;
  overflow:hidden;
  border-radius:24px;
  border:1px solid rgba(255,255,255,.14);
  background-color:var(--bg-2);
  background-image:linear-gradient(90deg, rgba(5,10,20,.94), rgba(11,18,32,.62)), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  padding:60px;
  display:flex;
  align-items:center;
  min-height:320px;
}
.intro-content{position:relative;z-index:1;max-width:580px}
.intro-content .section-tag{margin-bottom:12px}
.intro-content h2{font-size:32px;font-weight:800;line-height:1.35;margin-bottom:14px}
.intro-content p{color:var(--text-2);margin-bottom:28px;font-size:16px}
.intro-actions{display:flex;gap:16px;flex-wrap:wrap}

/* ===== 卖点 ===== */
.feature-section{
  background:rgba(15,26,46,.35);
  padding:100px 0;
}
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.feature-card{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);
  padding:30px 26px;
  backdrop-filter:blur(12px);
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.feature-card:hover{
  transform:translateY(-6px);
  border-color:rgba(245,185,66,.55);
  box-shadow:var(--shadow-gold);
}
.feature-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:52px;
  height:52px;
  border-radius:14px;
  background:rgba(245,185,66,.12);
  color:var(--gold);
  margin-bottom:18px;
}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--text-2);line-height:1.7}

/* ===== 装备精选 ===== */
.gear-section{padding:100px 0}
.gear-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.gear-card{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);
  overflow:hidden;
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.gear-card:hover{
  transform:translateY(-6px);
  border-color:rgba(245,185,66,.5);
  box-shadow:var(--shadow-gold);
}
.gear-media{
  position:relative;
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--bg-2);
}
.gear-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s;
}
.gear-card:hover .gear-media img{transform:scale(1.05)}
.gear-badge{
  position:absolute;
  top:14px;left:14px;
  z-index:2;
  background:rgba(5,10,20,.72);
  backdrop-filter:blur(8px);
  border:1px solid rgba(245,185,66,.35);
  color:var(--gold-2);
  font-size:13px;
  font-weight:600;
  padding:5px 12px;
  border-radius:999px;
}
.gear-body{padding:22px 22px 24px}
.gear-body h3{font-size:19px;font-weight:700;margin-bottom:8px}
.gear-body p{font-size:14px;color:var(--text-2);margin-bottom:16px;line-height:1.65}
.gear-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.price{font-size:20px;font-weight:800;color:var(--gold-2)}
.tag{
  font-size:12px;
  color:var(--gold);
  background:rgba(245,185,66,.12);
  border-radius:999px;
  padding:4px 10px;
}

/* ===== 适用场景 ===== */
.scene-section{
  background:rgba(15,26,46,.42);
  padding:100px 0;
}
.scene-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.scene-card{
  position:relative;
  display:flex;
  align-items:flex-end;
  height:280px;
  border-radius:var(--radius);
  overflow:hidden;
  background-size:cover;
  background-position:center;
  border:1px solid rgba(255,255,255,.12);
  transition:transform .3s,box-shadow .3s,border-color .3s;
}
.scene-card::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(5,10,20,.1) 25%, rgba(5,10,20,.92) 100%);
}
.scene-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-gold);
  border-color:rgba(245,185,66,.5);
}
.scene-info{position:relative;z-index:1;width:100%;padding:24px}
.scene-info h3{font-size:20px;font-weight:700;margin-bottom:6px}
.scene-info p{font-size:14px;color:var(--text-2);margin-bottom:10px}
.scene-link{font-size:13px;font-weight:600;color:var(--gold-2)}

/* ===== 选购流程 ===== */
.process-section{padding:100px 0}
.process-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.process-step{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);
  padding:40px 28px;
  text-align:center;
  transition:transform .3s,border-color .3s;
}
.process-step:hover{
  transform:translateY(-4px);
  border-color:rgba(245,185,66,.4);
}
.step-num{
  display:flex;
  align-items:center;
  justify-content:center;
  width:52px;
  height:52px;
  margin:0 auto 20px;
  background:var(--gold-grad);
  color:#1A1205;
  font-size:18px;
  font-weight:800;
  border-radius:50%;
  box-shadow:0 0 22px rgba(245,185,66,.35);
}
.process-step h3{font-size:20px;font-weight:700;margin-bottom:10px}
.process-step p{font-size:15px;color:var(--text-2)}

/* ===== 保障条 ===== */
.assure-section{
  background:rgba(5,10,20,.3);
  padding:80px 0;
}
.assure-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:20px;
  padding:36px 10px;
  backdrop-filter:blur(12px);
}
.assure-item{
  text-align:center;
  padding:8px 18px;
  border-right:1px solid rgba(255,255,255,.1);
}
.assure-item:last-child{border-right:0}
.assure-icon{
  color:var(--gold);
  margin-bottom:12px;
  display:flex;
  justify-content:center;
}
.assure-item h4{font-size:16px;font-weight:700;margin-bottom:6px}
.assure-item p{font-size:13px;color:var(--text-3)}

/* ===== FAQ ===== */
.faq-section{
  padding:100px 0;
  background:rgba(15,26,46,.35);
}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
  border-radius:16px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .3s;
}
.faq-item.open{border-color:rgba(245,185,66,.5)}
.faq-q{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  padding:22px 24px;
  font-size:17px;
  font-weight:600;
  cursor:pointer;
  user-select:none;
  margin:0;
}
.faq-icon{
  position:relative;
  flex:none;
  width:22px;
  height:22px;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--gold);
  border-radius:2px;
}
.faq-icon::before{width:16px;height:2px;left:3px;top:10px}
.faq-icon::after{width:2px;height:16px;left:10px;top:3px;transition:transform .3s}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease;
}
.faq-item.open .faq-a{max-height:300px}
.faq-a p{
  padding:0 24px 22px 16px;
  margin:0 24px;
  color:var(--text-2);
  border-left:2px solid rgba(245,185,66,.6);
  padding-left:16px;
}

/* ===== CTA ===== */
.cta-section{padding:100px 0}
.cta-panel{
  position:relative;
  border-radius:28px;
  overflow:hidden;
  background-image:linear-gradient(120deg,rgba(5,10,20,.92),rgba(11,18,32,.72)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  padding:80px 24px;
  text-align:center;
}
.cta-inner{
  position:relative;
  z-index:1;
  max-width:720px;
  margin:0 auto;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:24px;
  padding:52px 44px;
  backdrop-filter:blur(14px);
}
.cta-inner .section-tag{margin-bottom:12px}
.cta-inner h2{font-size:34px;font-weight:800;line-height:1.35;margin-bottom:14px}
.cta-inner p{color:var(--text-2);margin-bottom:30px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{
  background:rgba(5,10,20,.95);
  border-top:1px solid rgba(245,185,66,.3);
  padding:64px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  margin-bottom:40px;
}
.footer-logo{
  font-size:20px;
  font-weight:800;
  color:var(--gold-2);
  letter-spacing:1px;
}
.footer-brand p{
  color:var(--text-3);
  margin-top:14px;
  font-size:14px;
  max-width:300px;
}
.footer-col h4{
  font-size:15px;
  color:var(--text);
  letter-spacing:2px;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{
  color:var(--text-2);
  font-size:14px;
  transition:color .25s,padding-left .25s;
}
.footer-col ul li a:hover{
  color:var(--gold-2);
  padding-left:4px;
}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--text-2);
  font-size:14px;
}
.footer-contact svg{
  color:var(--gold);
  width:16px;
  height:16px;
  flex:none;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:24px;
  color:var(--text-3);
  font-size:13px;
}
.footer-bottom a{color:var(--text-3);transition:color .2s}
.footer-bottom a:hover{color:var(--gold)}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .feature-grid,.gear-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .assure-grid{grid-template-columns:repeat(2,1fr)}
  .assure-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.08)}
  .assure-item:nth-child(odd){border-right:1px solid rgba(255,255,255,.1)}
  .assure-item:nth-child(3),.assure-item:nth-child(4){border-bottom:0}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .category-hero h1{font-size:42px}
}
@media (max-width:768px){
  .main-header.scrolled{background:rgba(5,10,20,.96)}
  .nav-wrap{height:64px}
  .main-nav{
    position:fixed;
    top:0;right:0;
    height:100vh;
    width:min(78vw,320px);
    background:rgba(5,10,20,.96);
    flex-direction:column;
    justify-content:center;
    gap:28px;
    box-shadow:-20px 0 40px rgba(0,0,0,.4);
    transform:translateX(105%);
    transition:transform .35s;
    border-left:1px solid rgba(255,255,255,.08);
  }
  .main-nav.open{transform:translateX(0)}
  .burger{display:flex}
  .category-hero{
    min-height:90vh;
    padding:120px 0 60px;
  }
  .category-hero h1{font-size:34px}
  .hero-sub{font-size:16px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid rgba(255,255,255,.08)}
  .section{padding:60px 0}
  .feature-section,.gear-section,.scene-section,.process-section,.faq-section,.cta-section{padding:60px 0}
  .section-head{margin-bottom:36px}
  .section-head h2{font-size:26px}
  .intro-section{padding-top:40px}
  .intro-card{padding:40px 24px}
  .intro-content h2{font-size:26px}
  .feature-grid,.gear-grid,.process-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .scene-card{height:230px}
  .assure-grid{grid-template-columns:1fr}
  .assure-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.08)}
  .assure-item:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost,
  .intro-actions .btn-primary,
  .intro-actions .btn-ghost,
  .cta-actions .btn-primary,
  .cta-actions .btn-ghost{width:100%}
  .cta-panel{padding:40px 16px}
  .cta-inner{padding:32px 20px}
  .btn-primary,.btn-ghost{padding:12px 20px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero-stats{padding:16px 6px}
  .stat-item strong{font-size:24px}
  .stat-item span{font-size:13px}
  .footer-bottom{justify-content:center;text-align:center}
}

/* roulang page: category2 */
:root {
      --bg-primary: #0B1220;
      --bg-secondary: #0F1A2E;
      --bg-elevated: #131F33;
      --bg-card: rgba(255, 255, 255, 0.05);
      --bg-card-hover: rgba(255, 255, 255, 0.09);
      --bg-glass: rgba(255, 255, 255, 0.04);
      --border: rgba(255, 255, 255, 0.12);
      --border-gold: rgba(245, 185, 66, 0.35);
      --text-primary: #EAF2FF;
      --text-secondary: #A7B8D9;
      --text-muted: #7E8FAD;
      --gold: #F5B942;
      --gold-light: #FFC95E;
      --gold-deep: #F5A623;
      --gold-grad: linear-gradient(135deg, #FFC95E 0%, #F5A623 100%);
      --success: #4ADE80;
      --danger: #F87171;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --radius-pill: 999px;
      --shadow-default: 0 8px 32px rgba(0, 0, 0, 0.35);
      --shadow-hover: 0 12px 40px rgba(245, 185, 66, 0.18);
      --shadow-gold: 0 0 20px rgba(245, 185, 66, 0.45);
      --container-width: 1200px;
      --gutter: 24px;
      --section-spacing: 80px;
      --section-spacing-mobile: 48px;
      --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.3s ease;
    }

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

    button,
    input,
    select,
    textarea {
      font-family: inherit;
      font-size: inherit;
      border: none;
      outline: none;
    }

    button {
      cursor: pointer;
      background: none;
    }

    ul,
    ol {
      list-style: none;
    }

    .container {
      max-width: var(--container-width);
      margin: 0 auto;
      padding-left: var(--gutter);
      padding-right: var(--gutter);
    }

    /* ===== 导航 ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(13, 20, 35, 0.5);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: background 0.4s ease, box-shadow 0.4s ease;
    }

    .site-header.scrolled {
      background: rgba(13, 20, 35, 0.92);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--gold);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    .logo-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--gold-grad);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0B1220;
      font-size: 18px;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 36px;
    }

    .nav-link {
      position: relative;
      color: var(--text-secondary);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 2px;
      transition: color 0.3s ease;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--gold);
      border-radius: 2px;
      transition: width 0.3s ease;
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--gold);
    }

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

    .nav-right {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .nav-search {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-secondary);
      border: 1px solid var(--border);
      transition: all 0.3s ease;
      background: rgba(255, 255, 255, 0.04);
    }

    .nav-search:hover {
      color: var(--gold);
      border-color: var(--border-gold);
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--gold-grad);
      color: #0B1220;
      font-weight: 700;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-gold);
      transition: all 0.3s ease;
      border: none;
      min-height: 44px;
    }

    .btn-primary:hover {
      filter: brightness(1.1);
      box-shadow: 0 0 28px rgba(245, 185, 66, 0.6);
      transform: translateY(-2px);
    }

    .btn-primary:active {
      transform: scale(0.98);
    }

    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-primary);
      font-weight: 500;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      backdrop-filter: blur(8px);
      transition: all 0.3s ease;
      min-height: 44px;
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--border-gold);
      color: var(--gold);
    }

    .btn-ghost:active {
      transform: scale(0.98);
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      width: 40px;
      height: 40px;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border);
    }

    .hamburger span {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--text-primary);
      border-radius: 2px;
      transition: all 0.3s ease;
    }

    .hamburger.open span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .hamburger.open span:nth-child(2) {
      opacity: 0;
    }

    .hamburger.open span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .mobile-menu {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      right: 0;
      background: rgba(11, 18, 32, 0.97);
      backdrop-filter: blur(20px);
      padding: 32px 24px;
      z-index: 999;
      border-bottom: 1px solid var(--border);
    }

    .mobile-menu.active {
      display: block;
    }

    .mobile-menu a {
      display: block;
      padding: 14px 0;
      font-size: 20px;
      font-weight: 600;
      color: var(--text-secondary);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      text-align: center;
    }

    .mobile-menu a:last-child {
      border-bottom: none;
    }

    .mobile-menu a:hover,
    .mobile-menu a.active {
      color: var(--gold);
    }

    /* ===== Hero Banner ===== */
    .category-hero {
      position: relative;
      min-height: 480px;
      padding: 160px 0 80px;
      background-image: linear-gradient(135deg, rgba(11, 18, 32, 0.92) 0%, rgba(11, 18, 32, 0.75) 50%, rgba(15, 26, 46, 0.6) 100%), url('/assets/images/backpic/back-1.png');
      background-size: cover;
      background-position: center;
      display: flex;
      align-items: center;
    }

    .category-hero::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(ellipse at 70% 20%, rgba(245, 185, 66, 0.08) 0%, transparent 60%);
      pointer-events: none;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .breadcrumb a {
      color: var(--text-muted);
      transition: color 0.3s;
    }

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

    .breadcrumb i {
      font-size: 10px;
      color: var(--text-muted);
    }

    .category-hero h1 {
      font-size: 52px;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 16px;
      background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .category-hero p.lead {
      font-size: 18px;
      color: var(--text-secondary);
      max-width: 620px;
      margin-bottom: 32px;
      line-height: 1.7;
    }

    .hero-cta {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .hero-info {
      display: flex;
      align-items: center;
      gap: 40px;
      margin-top: 48px;
      padding-top: 32px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .hero-stat {
      text-align: left;
    }

    .hero-stat .num {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-primary);
      line-height: 1.2;
    }

    .hero-stat .num em {
      font-style: normal;
      color: var(--gold);
    }

    .hero-stat .label {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* ===== 板块基础 ===== */
    .section {
      padding: var(--section-spacing) 0;
    }

    .section-alt {
      background: var(--bg-secondary);
    }

    .section-head {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-head .overline {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--gold);
      background: rgba(245, 185, 66, 0.12);
      padding: 6px 18px;
      border-radius: var(--radius-pill);
      margin-bottom: 14px;
    }

    .section-head h2 {
      font-size: 34px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .section-head p {
      color: var(--text-secondary);
      font-size: 16px;
      max-width: 640px;
      margin: 0 auto;
    }

    /* ===== 装备卡片 ===== */
    .equip-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .equip-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      backdrop-filter: blur(14px) saturate(120%);
      transition: all 0.3s ease;
    }

    .equip-card:hover {
      transform: translateY(-8px);
      border-color: var(--border-gold);
      box-shadow: var(--shadow-hover);
    }

    .equip-cover {
      position: relative;
      aspect-ratio: 4 / 3;
      overflow: hidden;
    }

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

    .equip-card:hover .equip-cover img {
      transform: scale(1.05);
    }

    .equip-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(11, 18, 32, 0.8);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-gold);
      color: var(--gold);
      font-size: 12px;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      letter-spacing: 1px;
    }

    .equip-body {
      padding: 22px 22px 26px;
    }

    .equip-body h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .equip-body p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
      margin-bottom: 16px;
      min-height: 44px;
    }

    .equip-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .equip-price {
      font-size: 22px;
      font-weight: 800;
      color: var(--gold);
    }

    .equip-price span {
      font-size: 14px;
      font-weight: 400;
      color: var(--text-muted);
    }

    .btn-buy {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--gold-grad);
      color: #0B1220;
      font-size: 13px;
      font-weight: 700;
      padding: 8px 18px;
      border-radius: var(--radius-md);
      transition: all 0.3s ease;
      min-height: 40px;
    }

    .btn-buy:hover {
      filter: brightness(1.1);
      box-shadow: 0 0 16px rgba(245, 185, 66, 0.4);
    }

    /* ===== 选购指南 ===== */
    .guide-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .guide-image {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-default);
    }

    .guide-image img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    .guide-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 60%, rgba(11, 18, 32, 0.5));
      pointer-events: none;
    }

    .guide-content h2 {
      font-size: 30px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .guide-content > p {
      color: var(--text-secondary);
      margin-bottom: 28px;
      font-size: 16px;
    }

    .guide-points {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .guide-point {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }

    .guide-point .icon-box {
      flex-shrink: 0;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(245, 185, 66, 0.12);
      border: 1px solid var(--border-gold);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold);
      font-size: 18px;
    }

    .guide-point h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 4px;
    }

    .guide-point p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* ===== 保障条 ===== */
    .guarantee-bar {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      backdrop-filter: blur(14px);
      padding: 40px 24px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 40px;
    }

    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 16px;
      justify-content: center;
    }

    .guarantee-item .g-icon {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: rgba(245, 185, 66, 0.1);
      border: 1px solid var(--border-gold);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold);
      font-size: 20px;
      flex-shrink: 0;
    }

    .guarantee-item .g-text h3 {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-primary);
    }

    .guarantee-item .g-text p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .divider-v {
      width: 1px;
      height: 40px;
      background: rgba(255, 255, 255, 0.08);
      align-self: center;
    }

    /* ===== FAQ ===== */
    .faq-wrap {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--bg-glass);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: border-color 0.3s ease, box-shadow 0.3s ease;
      backdrop-filter: blur(8px);
    }

    .faq-item.active {
      border-color: var(--border-gold);
      box-shadow: 0 8px 30px rgba(245, 185, 66, 0.08);
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 24px;
      cursor: pointer;
      user-select: none;
    }

    .faq-question h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--text-primary);
    }

    .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(245, 185, 66, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold);
      font-size: 14px;
      transition: transform 0.3s ease;
      flex-shrink: 0;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
    }

    .faq-answer-inner {
      padding: 0 24px 20px;
      border-left: 2px solid var(--gold);
      margin-left: 24px;
    }

    .faq-answer p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== CTA Panel ===== */
    .cta-panel {
      position: relative;
      padding: 96px 0;
      background-image: linear-gradient(135deg, rgba(11, 18, 32, 0.9), rgba(15, 26, 46, 0.85)), url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      text-align: center;
    }

    .cta-inner {
      max-width: 640px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      backdrop-filter: blur(16px);
      padding: 48px 40px;
    }

    .cta-inner h2 {
      font-size: 34px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .cta-inner h2 span {
      color: var(--gold);
    }

    .cta-inner p {
      color: var(--text-secondary);
      font-size: 16px;
      margin-bottom: 28px;
    }

    .cta-buttons {
      display: flex;
      gap: 16px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .cta-buttons .btn-primary {
      font-size: 16px;
      padding: 14px 32px;
    }

    .cta-buttons .btn-ghost {
      font-size: 16px;
      padding: 14px 32px;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: rgba(5, 10, 20, 0.95);
      border-top: 1px solid var(--border-gold);
      padding: 64px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.4fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand .footer-logo {
      font-size: 22px;
      font-weight: 800;
      color: var(--gold);
      display: block;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 320px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-primary);
      letter-spacing: 2px;
      margin-bottom: 18px;
    }

    .footer-col ul li {
      margin-bottom: 10px;
    }

    .footer-col ul li a {
      font-size: 14px;
      color: var(--text-secondary);
      transition: color 0.3s;
    }

    .footer-col ul li a:hover {
      color: var(--gold);
    }

    .footer-contact li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--text-secondary);
    }

    .footer-contact li i {
      color: var(--gold);
      width: 16px;
      text-align: center;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 20px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 8px;
    }

    .footer-bottom p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .footer-bottom a {
      color: var(--text-muted);
      transition: color 0.3s;
    }

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

    /* ===== 响应式 ===== */
    @media (max-width: 1199px) {
      :root {
        --section-spacing: 64px;
      }

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

      .guide-wrap {
        gap: 32px;
      }

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

    @media (max-width: 991px) {
      .main-nav {
        display: none;
      }

      .nav-right .btn-primary {
        display: none;
      }

      .hamburger {
        display: flex;
      }

      .category-hero {
        padding-top: 140px;
      }

      .category-hero h1 {
        font-size: 38px;
      }

      .hero-info {
        flex-wrap: wrap;
        gap: 20px;
      }

      .guarantee-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }

      .divider-v {
        display: none;
      }
    }

    @media (max-width: 767px) {
      :root {
        --section-spacing: 48px;
        --gutter: 16px;
      }

      .site-header {
        height: 64px;
      }

      .nav-wrapper {
        height: 64px;
      }

      .logo {
        font-size: 18px;
      }

      .logo-icon {
        width: 30px;
        height: 30px;
        font-size: 14px;
      }

      .category-hero {
        min-height: 420px;
        padding: 120px 0 56px;
      }

      .category-hero h1 {
        font-size: 30px;
      }

      .category-hero p.lead {
        font-size: 15px;
      }

      .hero-cta {
        flex-direction: column;
      }

      .hero-cta .btn-primary,
      .hero-cta .btn-ghost {
        width: 100%;
      }

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

      .guide-wrap {
        grid-template-columns: 1fr;
      }

      .guide-content h2 {
        font-size: 24px;
      }

      .section-head h2 {
        font-size: 24px;
      }

      .guarantee-bar {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        padding: 24px 16px;
      }

      .guarantee-item {
        flex-direction: column;
        text-align: center;
      }

      .cta-inner {
        padding: 32px 20px;
      }

      .cta-inner h2 {
        font-size: 24px;
      }

      .cta-buttons {
        flex-direction: column;
      }

      .cta-buttons .btn-primary,
      .cta-buttons .btn-ghost {
        width: 100%;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
        justify-content: center;
      }

      .faq-question {
        padding: 16px;
      }

      .faq-question h3 {
        font-size: 15px;
      }

      .faq-answer-inner {
        padding: 0 16px 16px;
        margin-left: 16px;
      }
    }

    @media (max-width: 520px) {
      .breadcrumb {
        font-size: 12px;
        flex-wrap: wrap;
      }

      .category-hero h1 {
        font-size: 26px;
      }

      .guarantee-bar {
        grid-template-columns: 1fr;
      }

      .equip-body {
        padding: 16px;
      }

      .equip-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }

      .btn-buy {
        width: 100%;
        justify-content: center;
      }

      .guide-point .icon-box {
        width: 36px;
        height: 36px;
        font-size: 14px;
      }

      .guide-point h3 {
        font-size: 15px;
      }

      .faq-icon {
        width: 24px;
        height: 24px;
        font-size: 12px;
      }
    }