/* roulang page: index */
:root {
  --primary: #E85D3F;
  --primary-hover: #D44E2E;
  --secondary: #1B9AAA;
  --accent: #F7C548;
  --bg: #FAF6F0;
  --card: #FFFFFF;
  --ink: #2B2B28;
  --ink-secondary: #6B6B66;
  --border: #E5E0D8;
  --dark: #2B2B28;
  --dark-text: #F2EDE7;
  --dark-sub: #9A948A;
  --radius: 20px;
  --radius-sm: 10px;
  --shadow: 0 4px 20px rgba(43,43,40,0.06);
  --shadow-hover: 0 12px 32px rgba(43,43,40,0.10);
  --transition: all 0.25s ease;
  --nav-width: 220px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  font-size: 16px;
  letter-spacing: 0.01em;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-hover); }
ul { list-style: none; }
button { font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section-title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  position: relative;
  padding-left: 16px;
}
.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: var(--primary);
  border-radius: 4px;
}
.section-subtitle {
  color: var(--ink-secondary);
  font-size: 1rem;
  max-width: 640px;
  margin-bottom: 48px;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(232,93,63,0.35);
  transition: var(--transition);
  line-height: 1.4;
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  box-shadow: 0 6px 20px rgba(232,93,63,0.45);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus {
  outline: 3px solid rgba(232,93,63,0.3);
  outline-offset: 2px;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--primary);
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
  border: 2px solid var(--primary);
  cursor: pointer;
  transition: var(--transition);
}
.btn-outline:hover {
  background: rgba(232,93,63,0.08);
  color: var(--primary-hover);
  border-color: var(--primary-hover);
}
.btn-sticker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  padding: 16px 38px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 18px;
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 var(--ink);
  transition: var(--transition);
  cursor: pointer;
}
.btn-sticker:hover {
  box-shadow: 3px 3px 0 var(--ink);
  transform: translate(3px, 3px);
  color: #fff;
  background: var(--primary-hover);
}
.btn-sticker:active {
  box-shadow: 0 0 0 var(--ink);
  transform: translate(6px, 6px);
}
.btn-sticker.btn-sm {
  padding: 10px 20px;
  font-size: 14px;
}

/* ===== 左侧导航 ===== */
.side-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--nav-width);
  background: var(--dark);
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 20px 12px;
  overflow-y: auto;
}
.side-nav .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  margin-bottom: 24px;
}
.side-nav .logo-mark {
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  transform: rotate(-6deg);
  flex-shrink: 0;
}
.side-nav .logo-text {
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
}
.side-nav .logo-sub {
  color: var(--dark-sub);
  font-size: 12px;
  display: block;
  margin-top: 2px;
}
.nav-group { margin-bottom: 20px; }
.nav-label {
  color: var(--dark-sub);
  font-size: 12px;
  font-weight: 600;
  padding: 8px 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nav-group a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  color: #B8B2A8;
  font-size: 15px;
  font-weight: 500;
  margin: 4px 8px;
  transition: var(--transition);
  border-left: 3px solid transparent;
}
.nav-group a:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
}
.nav-group a.active {
  background: rgba(232,93,63,0.25);
  color: #fff;
  border-left-color: var(--primary);
}
.nav-group a i {
  width: 20px;
  text-align: center;
  font-size: 14px;
  opacity: 0.8;
}
.side-nav .nav-cta {
  margin-top: auto;
  padding: 16px;
  text-align: center;
}
.side-nav .nav-contact {
  margin-top: 12px;
  color: var(--dark-sub);
  font-size: 13px;
  line-height: 1.6;
}

/* ===== 移动端顶部导航 ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 200;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  box-shadow: 0 2px 12px rgba(43,43,40,0.06);
}
.mobile-header .mobile-brand {
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.mobile-header .mobile-brand .logo-mark {
  width: 26px;
  height: 26px;
  background: var(--primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  transform: rotate(-6deg);
}
.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: var(--transition);
}
.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-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--dark);
  z-index: 150;
  padding: 80px 32px 32px;
  overflow-y: auto;
}
.mobile-overlay.open { display: block; }
.mobile-overlay a {
  display: block;
  color: var(--dark-sub);
  font-size: 24px;
  font-weight: 700;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.mobile-overlay a:hover,
.mobile-overlay a.active { color: #fff; }
.mobile-overlay a.active { color: var(--accent); }
.mobile-overlay .close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
}

/* ===== 主内容区 ===== */
.main-content {
  margin-left: var(--nav-width);
  min-height: 100vh;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(250,246,240,0.95) 0%, rgba(250,246,240,0.65) 55%, rgba(250,246,240,0.15) 100%);
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding: 80px 24px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: var(--ink);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
  transform: rotate(-2deg);
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero h1 .highlight {
  color: var(--primary);
  position: relative;
}
.hero-subtitle {
  font-size: 1.125rem;
  color: var(--ink-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
.stat-item { text-align: left; }
.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--ink);
  display: block;
  line-height: 1.2;
}
.stat-label {
  font-size: 14px;
  color: var(--ink-secondary);
}

/* ===== 流程区 ===== */
.process-section { background: var(--bg); }
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.process-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(43,43,40,0.04);
  position: relative;
  transition: var(--transition);
}
.process-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.process-num {
  font-size: 56px;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.18;
  line-height: 1;
  margin-bottom: 16px;
}
.process-icon {
  width: 48px;
  height: 48px;
  background: rgba(232,93,63,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 16px;
}
.process-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.process-card p {
  color: var(--ink-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== 产品/案例区 ===== */
.cases-section { background: var(--card); }
.masonry-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  grid-template-areas:
    "large top1"
    "large top2"
    "small1 small2"
    "small3 small4";
  gap: 20px;
}
.case-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(43,43,40,0.04);
  transition: var(--transition);
  position: relative;
}
.case-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.case-card .case-img {
  height: 220px;
  background: rgba(232,93,63,0.06);
  overflow: hidden;
}
.case-card.large-card .case-img { height: 420px; }
.case-card .case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.case-card:hover .case-img img { transform: scale(1.04); }
.case-card .case-body {
  padding: 20px;
  position: relative;
}
.case-card .case-tag {
  position: absolute;
  top: -10px;
  right: 16px;
  background: var(--accent);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  transform: rotate(3deg);
  box-shadow: 0 2px 8px rgba(43,43,40,0.1);
}
.case-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  padding-right: 40px;
}
.case-card p {
  color: var(--ink-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}
.case-card.large-card .case-body h3 { font-size: 1.4rem; }
.grid-large { grid-area: large; }
.grid-top1 { grid-area: top1; }
.grid-top2 { grid-area: top2; }
.grid-small1 { grid-area: small1; }
.grid-small2 { grid-area: small2; }
.grid-small3 { grid-area: small3; }
.grid-small4 { grid-area: small4; }

/* ===== 进度面板区 ===== */
.progress-section { background: var(--bg); }
.progress-panel {
  background: var(--card);
  border-radius: var(--radius);
  padding: 48px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(43,43,40,0.04);
}
.progress-track {
  display: flex;
  justify-content: space-between;
  margin-bottom: 40px;
  position: relative;
}
.progress-step {
  flex: 1;
  text-align: center;
  position: relative;
  padding-top: 32px;
}
.progress-step::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--border);
  border: 3px solid var(--card);
  box-shadow: 0 0 0 2px var(--border);
  z-index: 2;
}
.progress-step.active::before {
  background: var(--accent);
  border-color: var(--card);
  box-shadow: 0 0 0 2px var(--accent);
}
.progress-step.done::before {
  background: var(--secondary);
  border-color: var(--card);
  box-shadow: 0 0 0 2px var(--secondary);
}
.progress-step .step-label {
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
}
.progress-step .step-status {
  font-size: 12px;
  color: var(--ink-secondary);
  margin-top: 4px;
}
.progress-line {
  position: absolute;
  top: 16px;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.progress-line-fill {
  height: 100%;
  background: var(--secondary);
  border-radius: 4px;
  transition: width 0.6s ease;
}
.progress-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
  background: rgba(250,246,240,0.6);
  border-radius: 16px;
  padding: 24px;
}
.progress-stat {
  text-align: center;
}
.progress-stat .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--ink);
  display: block;
}
.progress-stat .label {
  font-size: 13px;
  color: var(--ink-secondary);
}

/* ===== CTA色块 ===== */
.cta-block {
  background: var(--primary);
  border-radius: 0;
  padding: 80px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 160px;
  height: 160px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
}
.cta-block::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 80px;
  width: 100px;
  height: 100px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}
.cta-inner h2 {
  color: #fff;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-inner p {
  color: rgba(255,255,255,0.9);
  font-size: 1.05rem;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ===== 资讯区 ===== */
.news-section { background: var(--bg); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(43,43,40,0.04);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.news-card .news-img {
  height: 160px;
  background: rgba(27,154,170,0.08);
  overflow: hidden;
}
.news-card .news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-card .news-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-card .news-category {
  display: inline-block;
  background: rgba(232,93,63,0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
  width: fit-content;
}
.news-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card h3 a { color: var(--ink); }
.news-card h3 a:hover { color: var(--primary); }
.news-card .news-summary {
  color: var(--ink-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
  margin-bottom: 12px;
}
.news-card .news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--ink-secondary);
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.news-card .news-meta a {
  color: var(--primary);
  font-weight: 600;
}
.news-empty {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 60px 20px;
  text-align: center;
  grid-column: 1 / -1;
}
.news-empty .sticker-icon {
  font-size: 48px;
  margin-bottom: 16px;
  display: inline-block;
  transform: rotate(-8deg);
  color: var(--primary);
  opacity: 0.5;
}
.news-empty p {
  color: var(--ink-secondary);
  margin-bottom: 16px;
}

/* ===== FAQ ===== */
.faq-section { background: var(--card); }
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 600;
  font-size: 1rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  outline: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 22px;
  color: var(--primary);
  font-weight: 700;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item[open] {
  background: #FFF9F2;
  border-color: rgba(232,93,63,0.3);
}
.faq-answer {
  padding: 0 20px 20px;
  color: #4A4A45;
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ===== 表单 ===== */
.contact-section { background: var(--bg); }
.contact-wrap {
  max-width: 720px;
  margin: 0 auto;
  background: var(--card);
  border-radius: var(--radius);
  padding: 48px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(43,43,40,0.04);
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}
.form-group input,
.form-group textarea {
  width: 100%;
  height: 48px;
  border-radius: 12px;
  border: 1px solid #D9D4CC;
  background: #fff;
  padding: 0 16px;
  font-size: 16px;
  font-family: inherit;
  color: var(--ink);
  transition: var(--transition);
}
.form-group textarea {
  min-height: 120px;
  padding: 12px 16px;
  resize: vertical;
  line-height: 1.6;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(232,93,63,0.15);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #B0ACA4;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark);
  color: var(--dark-sub);
  padding: 60px 40px 24px;
  margin-left: var(--nav-width);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}
.footer-brand .logo-text {
  color: #fff;
  font-weight: 800;
  font-size: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.footer-brand .logo-mark {
  width: 28px;
  height: 28px;
  background: var(--primary);
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  transform: rotate(-6deg);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer-brand .contact-email {
  font-size: 14px;
}
.footer-brand .contact-email a {
  color: var(--dark-text);
}
.footer-col h4 {
  color: var(--dark-text);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.footer-col a {
  display: block;
  color: var(--dark-sub);
  font-size: 14px;
  padding: 6px 0;
  transition: var(--transition);
}
.footer-col a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-bottom {
  max-width: 1200px;
  margin: 48px auto 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--dark-sub);
}

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
  .side-nav { display: none; }
  .mobile-header { display: flex; }
  .main-content { margin-left: 0; }
  .site-footer { margin-left: 0; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 64px 0; }
}
@media screen and (max-width: 768px) {
  .process-grid { grid-template-columns: 1fr; }
  .masonry-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "large"
      "top1"
      "top2"
      "small1"
      "small2"
      "small3"
      "small4";
  }
  .case-card.large-card .case-img { height: 260px; }
  .news-grid { grid-template-columns: 1fr; }
  .progress-stats { grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
  .progress-panel { padding: 32px 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero { min-height: auto; }
  .hero-content { padding: 100px 24px 60px; }
  .hero-stats { gap: 24px; }
  .section-title { padding-left: 12px; }
  .contact-wrap { padding: 32px 24px; }
}
@media screen and (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .hero-btns .btn-primary,
  .hero-btns .btn-outline { width: 100%; }
  .progress-stats { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stat-number { font-size: 26px; }
  .btn-sticker { width: 100%; }
  .cta-block { padding: 60px 20px; }
  .progress-track { flex-direction: column; gap: 20px; }
  .progress-step { text-align: left; padding-top: 0; padding-left: 40px; }
  .progress-step::before { left: 0; top: 50%; transform: translateY(-50%); }
  .progress-line { display: none; }
}

/* roulang page: category1 */
:root {
  --primary: #E85D3F;
  --primary-dark: #D44E2E;
  --secondary: #1B9AAA;
  --accent: #F7C548;
  --bg: #FAF6F0;
  --card: #FFFFFF;
  --ink: #2B2B28;
  --muted: #6B6B66;
  --border: #E5E0D8;
  --dark: #2B2B28;
  --dark-soft: #3A3A36;
  --dark-text: #F2EDE7;
  --dark-muted: #9A948A;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 20px rgba(43, 43, 40, 0.06);
  --shadow-hover: 0 12px 32px rgba(43, 43, 40, 0.10);
  --transition: all 0.25s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  font-size: 1rem;
  letter-spacing: 0.01em;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--ink);
  text-decoration: none;
  transition: var(--transition);
}
button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}
ul {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-pad {
  padding: 80px 0;
}
.section-tag {
  display: inline-block;
  background: rgba(232, 93, 63, 0.10);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 16px;
  transform: rotate(-1deg);
}
h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  position: relative;
  padding-left: 16px;
}
h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 4px;
  background: var(--primary);
}
h3 {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}
p {
  color: var(--ink);
  line-height: 1.75;
  margin-bottom: 12px;
}
/* 左侧导航 */
.left-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 220px;
  height: 100vh;
  background: var(--dark);
  padding: 24px 12px 20px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.brand-area {
  padding: 0 12px 24px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.logo-text {
  display: inline-flex;
  align-items: center;
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.02em;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 800;
  margin-right: 8px;
  transform: rotate(-6deg);
}
.brand-sub {
  display: block;
  color: var(--dark-muted);
  font-size: 0.75rem;
  margin-top: 4px;
  letter-spacing: 0.08em;
}
.nav-group {
  padding: 0 4px;
}
.nav-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.35);
  padding: 0 12px;
  margin-bottom: 6px;
  font-weight: 600;
}
.nav-group a {
  display: flex;
  align-items: center;
  padding: 13px 14px;
  color: #B8B2A8;
  font-size: 0.95rem;
  border-radius: 10px;
  margin-bottom: 4px;
  font-weight: 500;
  gap: 10px;
  transition: var(--transition);
}
.nav-group a i {
  width: 20px;
  text-align: center;
  font-size: 0.9rem;
}
.nav-group a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}
.nav-group a.active {
  background: rgba(232, 93, 63, 0.25);
  color: #fff;
  box-shadow: inset 3px 0 0 var(--primary);
}
.nav-contact {
  margin-top: auto;
  padding: 16px 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.nav-contact p {
  color: var(--dark-muted);
  font-size: 0.75rem;
  margin-bottom: 4px;
}
.nav-contact a {
  color: #d8d2c8;
  font-size: 0.85rem;
}
.nav-contact a:hover {
  color: #fff;
}
/* 移动端顶部栏 */
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(250, 246, 240, 0.96);
  backdrop-filter: blur(8px);
  z-index: 200;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
}
.mobile-topbar .logo-text {
  color: var(--ink);
  font-size: 1.2rem;
}
.mobile-toggle {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: #fff;
  border-radius: 10px;
  font-size: 1rem;
  transition: var(--transition);
}
.mobile-toggle:hover {
  background: var(--primary);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--dark);
  padding: 20px;
  z-index: 199;
  border-radius: 0 0 20px 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.mobile-menu.open {
  display: block;
}
.mobile-menu a {
  display: block;
  color: #e0dbd3;
  padding: 14px 18px;
  border-radius: 10px;
  font-size: 1rem;
  margin-bottom: 4px;
  font-weight: 600;
}
.mobile-menu a:hover,
.mobile-menu a.active {
  background: rgba(232, 93, 63, 0.25);
  color: #fff;
}
/* 页面横幅 */
.page-hero {
  position: relative;
  min-height: 340px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(250, 246, 240, 0.94) 0%, rgba(250, 246, 240, 0.60) 60%, rgba(250, 246, 240, 0.10) 100%);
}
.page-hero-wrap {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}
.page-hero-content {
  max-width: 560px;
  padding: 48px 0;
}
.hero-badge {
  display: inline-block;
  background: var(--accent);
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
  transform: rotate(-1.5deg);
}
.page-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.page-hero h1 .accent {
  color: var(--primary);
}
.page-hero-content p {
  font-size: 1.05rem;
  color: #4A4A45;
  margin-bottom: 28px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  padding: 14px 34px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 4px 14px rgba(232, 93, 63, 0.35);
  transition: var(--transition);
  gap: 8px;
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(232, 93, 63, 0.45);
  color: #fff;
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(232, 93, 63, 0.4);
  outline-offset: 2px;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 12px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
}
.btn-outline:hover {
  background: rgba(232, 93, 63, 0.08);
  color: var(--primary-dark);
}
/* 交错图文区块 */
.split-section {
  padding: 64px 0;
}
.split-section:nth-of-type(even) {
  background: #fff;
}
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split-reverse .split-grid {
  direction: rtl;
}
.split-reverse .split-grid > * {
  direction: ltr;
}
.split-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid rgba(43, 43, 40, 0.04);
}
.split-img:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.split-img img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.split-content h2 {
  margin-bottom: 16px;
}
.split-content p {
  color: #4A4A45;
  margin-bottom: 16px;
}
.check-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  font-weight: 500;
  color: var(--ink);
}
.check-list li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 2px;
  width: 22px;
  height: 22px;
  background: rgba(27, 154, 170, 0.12);
  color: var(--secondary);
  border-radius: 50%;
  font-size: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
/* 特性卡 2x2 */
.feature-section {
  padding: 80px 0;
  background: var(--bg);
}
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 36px;
}
.feature-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid rgba(43, 43, 40, 0.04);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card:nth-child(even) {
  transform: rotate(0.8deg);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(232, 93, 63, 0.10);
  color: var(--primary);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
}
.feature-card:nth-child(2) .feature-icon {
  background: rgba(27, 154, 170, 0.12);
  color: var(--secondary);
}
.feature-card:nth-child(3) .feature-icon {
  background: rgba(247, 197, 72, 0.2);
  color: #C8A02E;
}
.feature-card:nth-child(4) .feature-icon {
  background: rgba(27, 154, 170, 0.12);
  color: var(--secondary);
}
.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}
.feature-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 0;
  line-height: 1.7;
}
/* 产品展示 */
.showcase-section {
  padding: 80px 0;
  background: #fff;
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}
.section-head h2 {
  padding-left: 0;
}
.section-head h2::before {
  display: none;
}
.section-head p {
  color: var(--muted);
  font-size: 1rem;
}
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(43, 43, 40, 0.04);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
}
.product-card:nth-child(2) {
  transform: rotate(1deg);
}
.product-card:nth-child(3) {
  transform: rotate(-0.8deg);
}
.product-card:hover {
  transform: translateY(-4px) rotate(0deg);
  box-shadow: var(--shadow-hover);
}
.product-card img {
  width: 100%;
  aspect-ratio: 1 / 0.85;
  object-fit: cover;
}
.product-info {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.product-info h3 {
  font-size: 1rem;
  margin-bottom: 0;
  font-weight: 700;
}
.product-tag {
  display: inline-block;
  background: var(--accent);
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  white-space: nowrap;
  transform: rotate(2deg);
}
/* FAQ */
.faq-section {
  padding: 80px 0;
  background: var(--bg);
}
.accordion {
  max-width: 760px;
  margin: 40px auto 0;
}
.accordion-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.accordion-item:hover {
  border-color: rgba(232, 93, 63, 0.3);
}
.accordion-item.is-active {
  border-color: rgba(232, 93, 63, 0.3);
  background: #FFF9F2;
}
.accordion-title {
  position: relative;
  display: flex;
  align-items: center;
  padding: 18px 20px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
}
.accordion-title::before {
  content: "Q";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 800;
  margin-right: 12px;
  flex-shrink: 0;
}
.accordion-title::after {
  content: "+";
  position: absolute;
  right: 20px;
  font-size: 1.4rem;
  color: var(--muted);
  transition: var(--transition);
}
.accordion-item.is-active .accordion-title::after {
  transform: rotate(45deg);
  color: var(--primary);
}
.accordion-content {
  padding: 0 20px 20px;
  color: #4A4A45;
  line-height: 1.7;
  font-size: 0.95rem;
}
.accordion-content p {
  color: #4A4A45;
  margin-bottom: 0;
}
.accordion-content {
  display: none;
}
.accordion-item.is-active .accordion-content {
  display: block;
}
/* CTA */
.cta-section {
  padding: 90px 20px;
  background-image: url("/assets/images/backpic/back-2.webp");
  background-size: cover;
  background-position: center;
  position: relative;
  text-align: center;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(43, 43, 40, 0.82);
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: #fff;
  margin-bottom: 16px;
  padding-left: 0;
}
.cta-inner h2::before {
  display: none;
}
.cta-inner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
  margin-bottom: 32px;
}
.btn-sticker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 #000;
  background: var(--primary);
  color: #fff;
  padding: 18px 48px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1.1rem;
  transition: var(--transition);
  gap: 10px;
}
.btn-sticker:hover {
  box-shadow: 3px 3px 0 #000;
  transform: translate(3px, 3px);
  background: var(--primary-dark);
  color: #fff;
}
.btn-sticker:active {
  transform: translate(6px, 6px);
  box-shadow: 0 0 0 #000;
}
.cta-note {
  margin-top: 20px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
}
/* 页脚 */
.site-footer {
  background: var(--dark);
  color: var(--dark-muted);
  padding: 60px 40px 24px;
}
.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand .logo-text {
  margin-bottom: 14px;
}
.footer-brand p {
  color: var(--dark-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 10px;
  max-width: 300px;
}
.contact-email a {
  color: #B8B2A8;
  font-size: 0.9rem;
}
.contact-email a:hover {
  color: #fff;
}
.footer-col h4 {
  color: #d8d2c8;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--dark-muted);
  font-size: 0.9rem;
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-bottom {
  max-width: 1200px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}
/* 滚动条 */
.left-sidebar::-webkit-scrollbar {
  width: 4px;
}
.left-sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}
/* 响应式 */
@media (max-width: 1024px) {
  .left-sidebar {
    display: none;
  }
  .mobile-topbar {
    display: flex;
  }
  .mobile-menu {
    display: none;
  }
  .mobile-menu.open {
    display: block;
  }
  body {
    padding-top: 64px;
  }
  .page-hero {
    min-height: 300px;
  }
  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .split-grid {
    gap: 32px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 768px) {
  .section-pad {
    padding: 56px 0;
  }
  .split-grid {
    grid-template-columns: 1fr;
  }
  .split-reverse .split-grid {
    direction: ltr;
  }
  .split-section {
    padding: 40px 0;
  }
  .page-hero h1 {
    font-size: 2rem;
  }
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .feature-card:nth-child(even) {
    transform: none;
  }
  .showcase-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn-primary,
  .hero-actions .btn-outline {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .site-footer {
    padding: 40px 24px 24px;
  }
  .cta-section {
    padding: 60px 20px;
  }
  .btn-sticker {
    width: 100%;
    max-width: 320px;
  }
}
@media (max-width: 520px) {
  .section-tag {
    font-size: 0.75rem;
    padding: 5px 12px;
  }
  .page-hero-content p {
    font-size: 0.95rem;
  }
  h2 {
    font-size: 1.4rem;
  }
  .feature-card {
    padding: 24px 20px;
  }
  .split-img img {
    aspect-ratio: 4 / 3.2;
  }
  .product-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .container {
    padding: 0 16px;
  }
}

/* roulang page: article */
:root {
      --primary: #E85D3F;
      --secondary: #1B9AAA;
      --accent: #F7C548;
      --bg: #FAF6F0;
      --card-bg: #FFFFFF;
      --ink: #2B2B28;
      --muted: #6B6B66;
      --border: #E5E0D8;
      --dark: #2B2B28;
      --dark-text: #F2EDE7;
      --dark-muted: #9A948A;
      --radius-lg: 20px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --shadow-sm: 0 4px 20px rgba(43, 43, 40, 0.06);
      --shadow-md: 0 12px 32px rgba(43, 43, 40, 0.10);
      --transition: all 0.25s ease;
      --content-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
      background: var(--bg);
      color: var(--ink);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

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

    ul, ol {
      list-style-position: inside;
    }

    button, input, textarea {
      font-family: inherit;
    }

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

    /* ===== 左侧竖向导航 ===== */
    .sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: 220px;
      height: 100vh;
      background: var(--dark);
      z-index: 1000;
      display: flex;
      flex-direction: column;
      padding: 20px 12px;
      overflow-y: auto;
    }

    .sidebar-brand {
      padding: 8px 12px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 16px;
    }

    .logo-text {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 1.15rem;
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.02em;
    }

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      background: var(--primary);
      color: #fff;
      border-radius: 8px;
      font-size: 0.95rem;
      font-weight: 800;
      transform: rotate(-4deg);
      box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.25);
    }

    .logo-sub {
      font-size: 0.75rem;
      color: var(--dark-muted);
      margin-top: 4px;
      letter-spacing: 0.08em;
      padding-left: 2px;
    }

    .sidebar-nav {
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .nav-group {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .nav-label {
      font-size: 0.7rem;
      text-transform: uppercase;
      letter-spacing: 0.14em;
      color: var(--dark-muted);
      padding: 12px 16px 6px;
    }

    .sidebar-nav a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 13px 16px;
      border-radius: 10px;
      color: #B8B2A8;
      font-size: 0.92rem;
      font-weight: 500;
      transition: var(--transition);
      border-left: 3px solid transparent;
    }

    .sidebar-nav a i {
      width: 18px;
      text-align: center;
      font-size: 0.95rem;
    }

    .sidebar-nav a:hover {
      background: rgba(255, 255, 255, 0.06);
      color: #fff;
    }

    .sidebar-nav a.active {
      background: rgba(232, 93, 63, 0.25);
      color: #fff;
      border-left-color: var(--primary);
    }

    .sidebar-contact {
      margin-top: 20px;
      padding: 16px;
      background: rgba(255, 255, 255, 0.04);
      border-radius: 14px;
      border: 1px solid rgba(255, 255, 255, 0.06);
      text-align: center;
    }

    .sidebar-contact p {
      font-size: 0.82rem;
      color: var(--dark-muted);
      margin-bottom: 10px;
      line-height: 1.5;
    }

    /* ===== 移动端顶部导航 ===== */
    .mobile-topbar {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 64px;
      background: var(--bg);
      z-index: 1100;
      padding: 0 20px;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 2px 12px rgba(43, 43, 40, 0.08);
      border-bottom: 1px solid var(--border);
    }

    .mobile-topbar .logo-text {
      color: var(--ink);
      font-size: 1.05rem;
    }

    .mobile-topbar .logo-mark {
      width: 24px;
      height: 24px;
      font-size: 0.8rem;
    }

    .menu-toggle {
      background: none;
      border: none;
      font-size: 1.3rem;
      color: var(--ink);
      cursor: pointer;
      padding: 8px;
      border-radius: 8px;
      transition: var(--transition);
    }

    .menu-toggle:hover {
      background: rgba(43, 43, 40, 0.06);
    }

    .mobile-drawer {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: var(--dark);
      z-index: 1050;
      padding: 80px 28px 28px;
      flex-direction: column;
      gap: 6px;
      transform: translateY(-100%);
      transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
      overflow-y: auto;
    }

    .mobile-drawer.open {
      transform: translateY(0);
    }

    .mobile-drawer .drawer-brand {
      font-size: 1.3rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .mobile-drawer a {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 16px 12px;
      color: #B8B2A8;
      font-size: 1.05rem;
      border-radius: 12px;
      border-left: 3px solid transparent;
      transition: var(--transition);
    }

    .mobile-drawer a:hover {
      background: rgba(255, 255, 255, 0.06);
      color: #fff;
    }

    .mobile-drawer a.active {
      color: #fff;
      background: rgba(232, 93, 63, 0.25);
      border-left-color: var(--primary);
    }

    .drawer-close {
      position: absolute;
      top: 20px;
      right: 20px;
      background: none;
      border: none;
      color: #fff;
      font-size: 1.4rem;
      cursor: pointer;
      padding: 8px;
    }

    /* ===== 主内容区 ===== */
    .main-area {
      margin-left: 220px;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    .main-area > .container {
      flex: 1;
    }

    /* ===== SEO 信息条 ===== */
    .seo-strip {
      background: #F0EDE7;
      border-bottom: 1px solid var(--border);
      padding: 14px 0;
    }

    .seo-inner {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .seo-row {
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .seo-icon {
      color: var(--primary);
      font-size: 0.8rem;
      width: 16px;
      text-align: center;
      margin-top: 3px;
    }

    .seo-text {
      font-size: 0.82rem;
      color: var(--muted);
      line-height: 1.5;
    }

    /* ===== 面包屑 ===== */
    .breadcrumb-block {
      padding-top: 28px;
      padding-bottom: 8px;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 0.85rem;
      color: var(--muted);
    }

    .breadcrumb a {
      color: var(--secondary);
      font-weight: 500;
    }

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

    .breadcrumb .sep {
      color: #B5B0A8;
    }

    .breadcrumb .current {
      color: var(--ink);
      font-weight: 600;
      max-width: 280px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .breadcrumb .breadcrumb-cat {
      color: var(--muted);
    }

    /* ===== 文章标题区 ===== */
    .article-header-block {
      padding-top: 20px;
      padding-bottom: 24px;
    }

    .article-heading h1 {
      font-size: clamp(1.9rem, 3.6vw, 2.6rem);
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: -0.01em;
      color: var(--ink);
    }

    .article-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--muted);
      font-size: 0.88rem;
    }

    .article-meta span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .article-meta i {
      color: var(--primary);
      font-size: 0.8rem;
    }

    /* ===== 正文区 ===== */
    .article-body-block {
      padding-bottom: 32px;
    }

    .article-content {
      background: var(--card-bg);
      border-radius: 24px;
      padding: 44px 48px;
      max-width: 760px;
      margin: 0 auto;
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(43, 43, 40, 0.04);
    }

    .article-content h2 {
      font-size: 1.45rem;
      font-weight: 700;
      margin: 1.8em 0 0.7em;
      line-height: 1.3;
      color: var(--ink);
      padding-left: 14px;
      border-left: 4px solid var(--primary);
    }

    .article-content h3 {
      font-size: 1.18rem;
      font-weight: 700;
      margin: 1.4em 0 0.5em;
      color: var(--ink);
    }

    .article-content p {
      margin-bottom: 1.5em;
      line-height: 1.8;
      letter-spacing: 0.01em;
      color: #3D3D38;
    }

    .article-content ul,
    .article-content ol {
      margin: 1em 0 1.5em;
      padding-left: 1.4em;
      line-height: 1.8;
      color: #3D3D38;
    }

    .article-content ul li {
      margin-bottom: 0.3em;
      list-style: none;
      position: relative;
      padding-left: 18px;
    }

    .article-content ul li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0.75em;
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      transform: rotate(0deg);
    }

    .article-content ol li {
      margin-bottom: 0.3em;
    }

    .article-content blockquote {
      border-left: 4px solid var(--primary);
      background: #FFF9F2;
      padding: 14px 20px;
      margin: 1.2em 0;
      border-radius: 0 12px 12px 0;
      font-style: italic;
      color: #55554F;
    }

    .article-content code {
      background: #F0EDE7;
      padding: 2px 8px;
      border-radius: 6px;
      font-size: 0.9em;
      font-family: "SF Mono", "Consolas", monospace;
    }

    .article-content pre {
      background: var(--dark);
      color: var(--dark-text);
      padding: 18px 20px;
      border-radius: 14px;
      overflow-x: auto;
      margin: 1.2em 0;
      line-height: 1.6;
    }

    .article-content pre code {
      background: none;
      padding: 0;
      color: inherit;
    }

    .article-content img {
      border-radius: 16px;
      margin: 1.2em auto;
      box-shadow: var(--shadow-sm);
    }

    .article-content table {
      width: 100%;
      border-collapse: collapse;
      margin: 1.2em 0;
      font-size: 0.92rem;
    }

    .article-content th,
    .article-content td {
      border: 1px solid var(--border);
      padding: 10px 14px;
      text-align: left;
    }

    .article-content th {
      background: #F5F2EC;
      font-weight: 600;
    }

    .article-content a {
      color: var(--secondary);
      font-weight: 500;
      border-bottom: 1px solid transparent;
    }

    .article-content a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    /* 空状态 */
    .article-empty {
      max-width: 600px;
      margin: 0 auto;
      background: var(--card-bg);
      border-radius: 24px;
      border: 2px dashed var(--border);
      padding: 70px 40px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .empty-sticker {
      width: 64px;
      height: 64px;
      background: var(--accent);
      border-radius: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 18px;
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--ink);
      transform: rotate(-6deg) scale(1);
      box-shadow: 3px 3px 0 var(--ink);
    }

    .article-empty h2 {
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .article-empty p {
      color: var(--muted);
      margin-bottom: 22px;
    }

    /* ===== 按钮 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 30px;
      border-radius: 999px;
      font-size: 0.95rem;
      font-weight: 600;
      border: 2px solid transparent;
      cursor: pointer;
      transition: all 0.25s ease;
      line-height: 1.4;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 14px rgba(232, 93, 63, 0.35);
    }

    .btn-primary:hover {
      background: #D44E2E;
      box-shadow: 0 6px 20px rgba(232, 93, 63, 0.45);
      transform: translateY(-2px);
      color: #fff;
    }

    .btn-primary:active {
      transform: translateY(0);
    }

    .btn-primary:focus {
      outline: none;
      box-shadow: 0 0 0 3px rgba(232, 93, 63, 0.25);
    }

    .btn-outline {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }

    .btn-outline:hover {
      background: rgba(232, 93, 63, 0.08);
      color: var(--primary);
      transform: translateY(-2px);
    }

    .btn-sm {
      padding: 9px 20px;
      font-size: 0.85rem;
    }

    /* ===== 标签区 ===== */
    .article-tags-block {
      padding-bottom: 32px;
    }

    .tags-wrap {
      max-width: 760px;
      margin: 0 auto;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 0 8px;
    }

    .tag {
      display: inline-block;
      padding: 7px 16px;
      background: rgba(232, 93, 63, 0.08);
      color: var(--primary);
      border-radius: 999px;
      font-size: 0.82rem;
      font-weight: 500;
      border: 1px solid rgba(232, 93, 63, 0.18);
      transition: var(--transition);
    }

    .tag:hover {
      background: rgba(232, 93, 63, 0.14);
      transform: translateY(-2px);
    }

    /* ===== 上一篇/下一篇 ===== */
    .article-pager {
      max-width: 760px;
      margin: 0 auto 8px;
      padding: 8px 8px 0;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      border-top: 1px solid var(--border);
    }

    .pager-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.88rem;
      color: var(--muted);
      padding: 12px 0;
      transition: var(--transition);
    }

    .pager-link:hover {
      color: var(--primary);
    }

    .pager-link.prev {
      color: var(--muted);
    }

    .pager-link.next {
      color: var(--secondary);
    }

    /* ===== 相关推荐 ===== */
    .related-block {
      padding: 48px 24px 56px;
      max-width: var(--content-max);
    }

    .section-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 28px;
    }

    .head-bar {
      display: inline-block;
      width: 5px;
      height: 24px;
      background: var(--primary);
      border-radius: 999px;
    }

    .section-head h2 {
      font-size: clamp(1.4rem, 2.4vw, 1.8rem);
      font-weight: 700;
      line-height: 1.3;
    }

    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .related-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(43, 43, 40, 0.04);
      transition: var(--transition);
      display: block;
    }

    .related-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .related-card img {
      width: 100%;
      height: 170px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .related-card:hover img {
      transform: scale(1.03);
    }

    .related-info {
      padding: 18px 20px 20px;
    }

    .badge {
      display: inline-block;
      background: rgba(232, 93, 63, 0.1);
      color: var(--primary);
      font-size: 0.72rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 10px;
    }

    .related-info h3 {
      font-size: 0.98rem;
      font-weight: 700;
      margin-bottom: 6px;
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .related-info p {
      font-size: 0.85rem;
      color: var(--muted);
      line-height: 1.6;
      margin-bottom: 10px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .read-more {
      font-size: 0.82rem;
      color: var(--secondary);
      font-weight: 600;
      transition: color 0.2s ease;
    }

    .related-card:hover .read-more {
      color: var(--primary);
    }

    /* ===== 返回入口 ===== */
    .article-back {
      padding: 8px 24px 48px;
      text-align: center;
      max-width: var(--content-max);
    }

    .article-back .btn-outline {
      min-width: 150px;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--dark);
      color: var(--dark-muted);
      padding: 60px 40px 24px;
      margin-top: 0;
    }

    .footer-grid {
      max-width: var(--content-max);
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 40px;
    }

    .footer-brand .logo-text {
      font-size: 1.25rem;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 0.85rem;
      line-height: 1.7;
      margin-bottom: 14px;
    }

    .contact-email a {
      color: var(--secondary);
      border-bottom: 1px solid transparent;
    }

    .contact-email a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    .footer-col {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col h4 {
      color: var(--dark-text);
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .footer-col a {
      font-size: 0.85rem;
      color: var(--dark-muted);
      transition: color 0.2s ease;
    }

    .footer-col a:hover {
      color: #fff;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 20px;
      text-align: center;
      max-width: var(--content-max);
      margin: 0 auto;
      font-size: 0.8rem;
      color: var(--dark-muted);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .sidebar {
        display: none;
      }

      .mobile-topbar {
        display: flex;
      }

      .mobile-drawer {
        display: flex;
      }

      .main-area {
        margin-left: 0;
        padding-top: 64px;
      }
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }

      .article-content {
        padding: 28px 24px;
        border-radius: 18px;
      }

      .article-heading h1 {
        font-size: 1.55rem;
      }

      .related-grid {
        grid-template-columns: 1fr;
        gap: 18px;
      }

      .related-card img {
        height: 200px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px 20px;
        padding: 0 0 32px;
      }

      .site-footer {
        padding: 44px 20px 20px;
      }

      .article-pager {
        flex-direction: column;
        gap: 4px;
      }
    }

    @media (max-width: 480px) {
      .container {
        padding: 0 16px;
      }

      .article-content {
        padding: 24px 18px;
        border-radius: 16px;
      }

      .article-content h2 {
        font-size: 1.25rem;
      }

      .article-meta {
        gap: 8px;
      }

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

      .footer-bottom {
        font-size: 0.75rem;
        line-height: 1.6;
      }

      .btn {
        width: 100%;
        padding: 13px 18px;
      }

      .seo-text {
        font-size: 0.76rem;
      }
    }

/* roulang page: category2 */
:root {
      --primary: #E85D3F;
      --primary-dark: #D44E2E;
      --secondary: #1B9AAA;
      --accent: #F7C548;
      --bg: #FAF6F0;
      --card-bg: #FFFFFF;
      --ink: #2B2B28;
      --ink-weak: #6B6B66;
      --border: #E5E0D8;
      --dark: #2B2B28;
      --dark-text: #F2EDE7;
      --dark-weak: #9A948A;
      --radius-card: 20px;
      --radius-sm: 10px;
      --shadow-card: 0 4px 20px rgba(43,43,40,0.06);
      --shadow-hover: 0 12px 32px rgba(43,43,40,0.10);
      --sidebar-w: 220px;
      --transition: all 0.25s ease;
    }

    * { margin: 0; padding: 0; box-sizing: border-box; }
    html, body { font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif; background: var(--bg); color: var(--ink); line-height: 1.75; }
    img { max-width: 100%; display: block; }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    ul, ol { padding-left: 1.4em; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
    h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }

    /* ===== 左侧导航 ===== */
    .site-sidebar {
      position: fixed; top: 0; left: 0; width: var(--sidebar-w); height: 100vh;
      background: var(--dark); padding: 24px 12px 20px; z-index: 1000;
      display: flex; flex-direction: column;
    }
    .site-sidebar .logo-text {
      font-size: 22px; font-weight: 800; color: #fff; padding: 4px 8px 0;
      display: flex; align-items: center; gap: 6px;
    }
    .site-sidebar .logo-text .logo-mark {
      display: inline-flex; align-items: center; justify-content: center;
      width: 28px; height: 28px; background: var(--primary); border-radius: 8px;
      font-size: 16px; font-weight: 900; color: #fff;
    }
    .site-sidebar .logo-sub {
      font-size: 13px; color: var(--dark-weak); padding: 2px 8px 18px;
      border-bottom: 1px solid rgba(255,255,255,0.08); margin-bottom: 14px;
      letter-spacing: 2px;
    }
    .nav-group { display: flex; flex-direction: column; gap: 4px; padding: 0 4px; flex: 1; }
    .nav-label {
      font-size: 11px; color: var(--dark-weak); text-transform: uppercase;
      letter-spacing: 2px; padding: 12px 12px 6px;
    }
    .nav-group a {
      display: flex; align-items: center; gap: 10px;
      color: #B8B2A8; font-size: 14.5px; font-weight: 500;
      padding: 12px 14px; border-radius: var(--radius-sm); margin: 2px 4px;
      transition: var(--transition); border-left: 3px solid transparent;
    }
    .nav-group a i { width: 18px; text-align: center; font-size: 15px; }
    .nav-group a:hover { background: rgba(255,255,255,0.06); color: #fff; }
    .nav-group a.active {
      background: rgba(232,93,63,0.25); color: #fff; border-left-color: var(--primary);
      font-weight: 600;
    }
    .sidebar-cta {
      background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
      border-radius: 14px; padding: 16px 14px; margin: 12px 8px 0; text-align: center;
    }
    .sidebar-cta p { font-size: 13px; color: var(--dark-weak); margin-bottom: 10px; line-height: 1.6; }
    .sidebar-cta .btn-mini {
      display: inline-block; background: var(--primary); color: #fff;
      font-size: 13px; font-weight: 600; border-radius: 999px;
      padding: 8px 16px; border: none; cursor: pointer; transition: var(--transition);
    }
    .sidebar-cta .btn-mini:hover { background: var(--primary-dark); transform: translateY(-1px); }

    /* ===== 移动端导航 ===== */
    .mobile-header {
      display: none; position: sticky; top: 0; left: 0; width: 100%; height: 64px;
      background: var(--bg); z-index: 1001; align-items: center; justify-content: space-between;
      padding: 0 20px; border-bottom: 1px solid var(--border);
    }
    .mobile-header .logo-m { font-size: 20px; font-weight: 800; color: var(--ink); display: flex; align-items: center; gap: 6px; }
    .mobile-header .logo-m .logo-mark {
      display: inline-flex; align-items: center; justify-content: center;
      width: 26px; height: 26px; background: var(--primary); border-radius: 7px;
      font-size: 15px; font-weight: 900; color: #fff;
    }
    .hamburger-btn {
      width: 42px; height: 42px; background: none; border: 1px solid var(--border);
      border-radius: 10px; cursor: pointer; display: flex; align-items: center; justify-content: center;
      font-size: 20px; color: var(--ink); transition: var(--transition);
    }
    .hamburger-btn:hover { background: #fff; border-color: var(--primary); color: var(--primary); }
    .mobile-drawer {
      display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
      background: var(--dark); z-index: 1100; flex-direction: column; padding: 40px 28px;
      overflow-y: auto;
    }
    .mobile-drawer.open { display: flex; }
    .drawer-close {
      position: absolute; top: 18px; right: 20px; background: none; border: none;
      font-size: 30px; color: var(--dark-weak); cursor: pointer; transition: var(--transition);
    }
    .drawer-close:hover { color: #fff; }
    .mobile-drawer .logo-mb {
      font-size: 24px; font-weight: 800; color: #fff; margin-bottom: 4px;
      display: flex; align-items: center; gap: 8px;
    }
    .mobile-drawer .logo-mb .logo-mark {
      display: inline-flex; align-items: center; justify-content: center;
      width: 30px; height: 30px; background: var(--primary); border-radius: 8px;
      font-size: 17px; font-weight: 900; color: #fff;
    }
    .mobile-drawer .nav-label { color: var(--dark-weak); margin-top: 24px; }
    .mobile-drawer a {
      display: flex; align-items: center; gap: 12px; color: #C8C2B8;
      font-size: 16px; padding: 14px 12px; border-radius: 10px; margin: 2px 0;
      border-left: 3px solid transparent; transition: var(--transition);
    }
    .mobile-drawer a:hover { background: rgba(255,255,255,0.06); color: #fff; }
    .mobile-drawer a.active { background: rgba(232,93,63,0.25); color: #fff; border-left-color: var(--primary); }

    /* ===== 主内容区 ===== */
    .site-main { margin-left: var(--sidebar-w); }

    /* ===== Banner ===== */
    .page-banner {
      position: relative; min-height: 320px; background: var(--dark);
      background-image: linear-gradient(90deg, rgba(250,246,240,0.92) 0%, rgba(250,246,240,0.55) 60%, rgba(250,246,240,0.15) 100%),
        url('/assets/images/backpic/back-2.webp');
      background-size: cover; background-position: center;
      display: flex; align-items: center; padding: 60px 0;
    }
    .banner-content { max-width: 660px; }
    .banner-badge {
      display: inline-block; background: var(--accent); color: var(--ink);
      font-size: 13px; font-weight: 700; border-radius: 999px; padding: 5px 16px;
      margin-bottom: 18px; letter-spacing: 0.5px; transform: rotate(-1deg);
      box-shadow: 2px 2px 0 rgba(43,43,40,0.15);
    }
    .page-banner h1 {
      font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 800; color: var(--ink);
      line-height: 1.25; margin-bottom: 14px;
    }
    .page-banner .sub-text {
      font-size: 1rem; color: var(--ink-weak); max-width: 500px; line-height: 1.7;
      margin-bottom: 26px;
    }
    .banner-actions { display: flex; gap: 14px; flex-wrap: wrap; }

    /* ===== 按钮 ===== */
    .btn-primary {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--primary); color: #fff; font-size: 15px; font-weight: 600;
      padding: 14px 32px; border-radius: 999px; border: none; cursor: pointer;
      box-shadow: 0 4px 14px rgba(232,93,63,0.35); transition: var(--transition);
    }
    .btn-primary:hover { background: var(--primary-dark); color: #fff; box-shadow: 0 6px 20px rgba(232,93,63,0.45); transform: translateY(-2px); }
    .btn-primary:active { transform: translateY(0); }
    .btn-primary:focus { outline: none; box-shadow: 0 0 0 4px rgba(232,93,63,0.25); }
    .btn-outline {
      display: inline-flex; align-items: center; gap: 8px;
      background: transparent; color: var(--primary); font-size: 15px; font-weight: 600;
      padding: 12px 30px; border-radius: 999px; border: 2px solid var(--primary); cursor: pointer;
      transition: var(--transition);
    }
    .btn-outline:hover { background: rgba(232,93,63,0.08); color: var(--primary-dark); transform: translateY(-1px); }
    .btn-sticker {
      display: inline-flex; align-items: center; gap: 10px;
      background: var(--primary); color: #fff; font-size: 17px; font-weight: 700;
      padding: 18px 44px; border-radius: 999px; border: 2px solid var(--ink);
      box-shadow: 6px 6px 0 var(--ink); cursor: pointer; transition: var(--transition);
    }
    .btn-sticker:hover { box-shadow: 3px 3px 0 var(--ink); transform: translate(3px, 3px); background: var(--primary-dark); color: #fff; }
    .btn-sticker:active { box-shadow: 1px 1px 0 var(--ink); transform: translate(5px, 5px); }

    /* ===== 通栏区块 ===== */
    .section-block { padding: 70px 0; }
    .section-title {
      font-size: clamp(1.5rem, 2.5vw, 2rem); font-weight: 700; color: var(--ink);
      margin-bottom: 14px; position: relative; padding-left: 16px;
    }
    .section-title::before {
      content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px;
      background: var(--primary); border-radius: 999px;
    }
    .section-sub { color: var(--ink-weak); font-size: 0.95rem; max-width: 640px; margin-bottom: 36px; }

    /* ===== 特性卡 2x2 ===== */
    .feature-card {
      background: var(--card-bg); border-radius: var(--radius-card); padding: 26px 24px;
      border: 1px solid rgba(43,43,40,0.04); box-shadow: var(--shadow-card);
      transition: var(--transition); height: 100%;
    }
    .feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
    .feature-icon {
      width: 46px; height: 46px; border-radius: 12px; background: rgba(232,93,63,0.12);
      color: var(--primary); font-size: 19px; display: flex; align-items: center; justify-content: center;
      margin-bottom: 16px;
    }
    .feature-card h3 { font-size: 1.06rem; margin-bottom: 8px; }
    .feature-card p { font-size: 0.875rem; color: var(--ink-weak); line-height: 1.65; margin-bottom: 0; }
    .feature-card:nth-child(2n) .feature-icon { background: rgba(27,154,170,0.12); color: var(--secondary); }
    .feature-card:nth-child(3n) .feature-icon { background: rgba(247,197,72,0.18); color: #B8860B; }

    /* ===== 流程步骤 ===== */
    .process-wrap {
      background: var(--dark); border-radius: 24px; padding: 50px 40px;
      color: var(--dark-text); position: relative; overflow: hidden;
    }
    .process-wrap::before {
      content: ''; position: absolute; right: -60px; top: -60px; width: 180px; height: 180px;
      background: rgba(27,154,170,0.15); border-radius: 50%;
    }
    .process-wrap .section-title { color: #fff; }
    .process-wrap .section-title::before { background: var(--accent); }
    .process-wrap .section-sub { color: var(--dark-weak); }
    .process-step {
      text-align: center; padding: 24px 16px; position: relative;
    }
    .process-num {
      font-size: 2.2rem; font-weight: 900; color: var(--accent); line-height: 1;
      display: block; margin-bottom: 12px; font-family: Georgia, serif;
    }
    .process-step h4 { color: #fff; font-size: 1.02rem; margin-bottom: 8px; }
    .process-step p { color: var(--dark-weak); font-size: 0.85rem; line-height: 1.65; margin-bottom: 0; }
    .process-step:not(:last-child)::after {
      content: '\f054'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
      position: absolute; top: 32%; right: -12px; color: rgba(255,255,255,0.25);
      font-size: 14px; pointer-events: none;
    }

    /* ===== 制品展示 ===== */
    .showcase-card {
      background: var(--card-bg); border-radius: var(--radius-card); overflow: hidden;
      box-shadow: var(--shadow-card); border: 1px solid rgba(43,43,40,0.04);
      transition: var(--transition);
    }
    .showcase-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
    .showcase-card .img-wrap { position: relative; overflow: hidden; aspect-ratio: 16/11; background: #EDE9E2; }
    .showcase-card .img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
    .showcase-card:hover .img-wrap img { transform: scale(1.04); }
    .showcase-tag {
      position: absolute; top: 12px; left: 12px; background: var(--accent); color: var(--ink);
      font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px;
      transform: rotate(-2deg); box-shadow: 2px 2px 0 rgba(43,43,40,0.15);
    }
    .showcase-info { padding: 18px 20px 20px; }
    .showcase-info h4 { font-size: 1.02rem; margin-bottom: 4px; }
    .showcase-info p { font-size: 0.85rem; color: var(--ink-weak); line-height: 1.6; margin-bottom: 12px; }
    .showcase-info .price {
      font-size: 0.85rem; color: var(--primary); font-weight: 600;
      display: flex; align-items: center; gap: 6px;
    }
    .showcase-card.tall .img-wrap { aspect-ratio: 4/5; }
    .showcase-card.rotate-right { transform: rotate(1.2deg); }
    .showcase-card.rotate-right:hover { transform: rotate(0deg) translateY(-6px); }
    .showcase-card.rotate-left { transform: rotate(-1deg); }
    .showcase-card.rotate-left:hover { transform: rotate(0deg) translateY(-6px); }

    /* ===== FAQ ===== */
    .faq-item {
      background: var(--card-bg); border: 1px solid var(--border); border-radius: 14px;
      margin-bottom: 12px; overflow: hidden; transition: var(--transition);
    }
    .faq-item:hover { border-color: rgba(232,93,63,0.3); }
    .faq-item.open { background: #FFF9F2; border-color: rgba(232,93,63,0.3); }
    .faq-question {
      display: flex; align-items: center; gap: 12px; width: 100%;
      padding: 18px 22px; background: none; border: none; cursor: pointer;
      font-size: 0.98rem; font-weight: 600; color: var(--ink); text-align: left;
      border-radius: 0; transition: var(--transition);
    }
    .faq-question .q-mark { color: var(--primary); font-weight: 900; font-size: 1.1rem; }
    .faq-question .q-icon {
      margin-left: auto; font-size: 18px; color: var(--ink-weak); transition: transform 0.3s ease;
    }
    .faq-item.open .faq-question .q-icon { transform: rotate(45deg); color: var(--primary); }
    .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
    .faq-answer p {
      padding: 0 22px 20px 44px; color: #4A4A45; font-size: 0.9rem; line-height: 1.75;
    }

    /* ===== CTA ===== */
    .cta-section { background: var(--primary); padding: 80px 0; position: relative; overflow: hidden; }
    .cta-section::before {
      content: ''; position: absolute; left: 20px; bottom: -40px; width: 140px; height: 140px;
      background: rgba(255,255,255,0.06); border-radius: 50%;
    }
    .cta-section::after {
      content: ''; position: absolute; right: 10%; top: -50px; width: 100px; height: 100px;
      background: rgba(247,197,72,0.2); border-radius: 20px; transform: rotate(18deg);
    }
    .cta-inner { text-align: center; position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
    .cta-inner h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 14px; }
    .cta-inner p { color: rgba(255,255,255,0.88); font-size: 0.98rem; max-width: 540px; margin: 0 auto 30px; line-height: 1.7; }
    .cta-inner .btn-sticker { background: var(--accent); color: var(--ink); border-color: var(--ink); }
    .cta-inner .btn-sticker:hover { background: #FFDE6E; color: var(--ink); }
    .cta-inner .btn-sticker:hover { box-shadow: 3px 3px 0 var(--ink); transform: translate(3px, 3px); }
    .cta-inner .btn-sticker:active { box-shadow: 1px 1px 0 var(--ink); transform: translate(5px, 5px); }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--dark); color: var(--dark-weak);
      padding: 60px 40px 24px; margin-left: var(--sidebar-w);
    }
    .footer-grid {
      display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; max-width: 1200px;
      margin: 0 auto; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .footer-brand .logo-text {
      font-size: 22px; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 6px;
      margin-bottom: 14px;
    }
    .footer-brand .logo-text .logo-mark {
      display: inline-flex; align-items: center; justify-content: center;
      width: 28px; height: 28px; background: var(--primary); border-radius: 8px;
      font-size: 16px; font-weight: 900; color: #fff;
    }
    .footer-brand p { font-size: 0.875rem; line-height: 1.7; max-width: 280px; }
    .footer-col h4 { color: #fff; font-size: 0.95rem; font-weight: 600; margin-bottom: 14px; }
    .footer-col a {
      display: block; color: var(--dark-weak); font-size: 0.875rem;
      padding: 5px 0; margin-bottom: 2px;
    }
    .footer-col a:hover { color: #fff; transform: translateX(3px); }
    .footer-bottom {
      max-width: 1200px; margin: 24px auto 0; text-align: center;
      font-size: 0.82rem; color: var(--dark-weak); border-top: 1px solid rgba(255,255,255,0.06);
      padding-top: 24px;
    }

    /* ===== 动画 ===== */
    @keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
    .fade-up { animation: fadeUp 0.6s ease both; }

    /* ===== 响应式 ===== */
    @media screen and (max-width: 1024px) {
      .site-sidebar { display: none; }
      .site-main { margin-left: 0; }
      .site-footer { margin-left: 0; }
      .mobile-header { display: flex; }
      .section-block { padding: 56px 0; }
    }
    @media screen and (max-width: 768px) {
      .container { padding: 0 18px; }
      .page-banner { min-height: 280px; padding: 44px 0; }
      .page-banner h1 { font-size: 1.7rem; }
      .section-block { padding: 44px 0; }
      .process-wrap { padding: 36px 20px; }
      .process-step:not(:last-child)::after { display: none; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    }
    @media screen and (max-width: 520px) {
      .container { padding: 0 14px; }
      .page-banner { min-height: 240px; }
      .page-banner h1 { font-size: 1.5rem; }
      .banner-actions .btn-primary,
      .banner-actions .btn-outline { width: 100%; justify-content: center; }
      .footer-grid { grid-template-columns: 1fr; }
      .btn-primary, .btn-outline { width: 100%; justify-content: center; }
      .cta-section { padding: 56px 0; }
      .cta-inner .btn-sticker { width: 100%; justify-content: center; }
    }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #E85D3F;
            --primary-dark: #D44E2E;
            --secondary: #1B9AAA;
            --accent: #F7C548;
            --bg: #FAF6F0;
            --card-bg: #FFFFFF;
            --ink: #2B2B28;
            --text-sub: #6B6B66;
            --border: #E5E0D8;
            --dark: #2B2B28;
            --dark-text: #F2EDE7;
            --dark-sub: #9A948A;
            --radius-lg: 20px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 4px 20px rgba(43, 43, 40, 0.06);
            --shadow-hover: 0 12px 32px rgba(43, 43, 40, 0.10);
            --transition: all 0.25s ease;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            letter-spacing: 0.01em;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 左侧导航 ===== */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 220px;
            background: var(--dark);
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 20px 12px;
            overflow-y: auto;
        }

        .sidebar .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px 0;
            margin-bottom: 6px;
        }

        .sidebar .brand .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            border-radius: 10px;
            transform: rotate(-3deg);
            box-shadow: 2px 2px 0 rgba(232, 93, 63, 0.4);
        }

        .sidebar .brand .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.02em;
        }

        .sidebar .brand-sub {
            color: var(--dark-sub);
            font-size: 13px;
            padding: 0 14px 18px;
            margin-top: 4px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sidebar nav {
            flex: 1;
            padding-top: 14px;
        }

        .sidebar .nav-group {
            margin-bottom: 18px;
        }

        .sidebar .nav-label {
            font-size: 12px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--dark-sub);
            padding: 8px 16px 6px;
            font-weight: 600;
        }

        .sidebar .nav-group a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            margin: 4px 8px;
            border-radius: var(--radius-sm);
            color: #B8B2A8;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

        .sidebar .nav-group a i {
            width: 20px;
            text-align: center;
            font-size: 15px;
        }

        .sidebar .nav-group a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }

        .sidebar .nav-group a.active {
            background: rgba(232, 93, 63, 0.25);
            color: #fff;
            border-left: 3px solid var(--primary);
            font-weight: 700;
        }

        .sidebar-bottom {
            padding: 16px 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sidebar-bottom .sidebar-cta {
            display: block;
            text-align: center;
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 14px rgba(232, 93, 63, 0.35);
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .sidebar-bottom .sidebar-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232, 93, 63, 0.45);
        }

        .sidebar-bottom .sidebar-contact {
            color: var(--dark-sub);
            font-size: 13px;
            text-align: center;
        }

        .sidebar-bottom .sidebar-contact a {
            color: var(--dark-sub);
        }

        .sidebar-bottom .sidebar-contact a:hover {
            color: #fff;
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--bg);
            z-index: 200;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(43, 43, 40, 0.04);
        }

        .mobile-topbar .mobile-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--ink);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-topbar .mobile-brand .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            border-radius: 8px;
            font-size: 15px;
        }

        .mobile-topbar .menu-toggle {
            background: var(--dark);
            color: #fff;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            font-size: 18px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-topbar .menu-toggle:hover {
            background: var(--primary);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--dark);
            z-index: 190;
            padding: 24px 20px;
            overflow-y: auto;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
        }

        .mobile-menu.open {
            transform: translateX(0);
        }

        .mobile-menu .nav-group {
            margin-bottom: 20px;
        }

        .mobile-menu .nav-label {
            font-size: 12px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--dark-sub);
            padding: 8px 0;
        }

        .mobile-menu .nav-group a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 12px;
            color: #B8B2A8;
            font-size: 17px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .mobile-menu .nav-group a i {
            width: 22px;
            text-align: center;
        }

        .mobile-menu .nav-group a:hover,
        .mobile-menu .nav-group a.active {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .mobile-menu .nav-group a.active {
            color: var(--accent);
        }

        /* ===== 主内容区域 ===== */
        .page-wrapper {
            margin-left: 220px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
        }

        /* ===== Hero Banner ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            padding: 80px 60px;
            background: linear-gradient(90deg, rgba(250, 246, 240, 0.92) 0%, rgba(250, 246, 240, 0.55) 60%, rgba(250, 246, 240, 0.15) 100%), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            background-size: cover;
        }

        .category-hero .hero-inner {
            max-width: 620px;
            position: relative;
            z-index: 2;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--ink);
            font-size: 14px;
            font-weight: 700;
            padding: 7px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
            box-shadow: 2px 2px 0 rgba(43, 43, 40, 0.15);
            transform: rotate(-1deg);
        }

        .category-hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--ink);
        }

        .category-hero .hero-sub {
            font-size: 18px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 30px;
            max-width: 500px;
        }

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

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 4px 14px rgba(232, 93, 63, 0.35);
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(232, 93, 63, 0.45);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-primary:focus {
            outline: 3px solid rgba(232, 93, 63, 0.3);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 12px 30px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-outline:hover {
            background: rgba(232, 93, 63, 0.08);
            color: var(--primary-dark);
        }

        .btn-outline:focus {
            outline: 3px solid rgba(232, 93, 63, 0.3);
            outline-offset: 2px;
        }

        .btn-sticker {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--ink);
            padding: 16px 40px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 17px;
            box-shadow: 6px 6px 0 var(--ink);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-sticker:hover {
            box-shadow: 3px 3px 0 var(--ink);
            transform: translate(3px, 3px);
            background: var(--primary-dark);
        }

        .btn-sticker:active {
            box-shadow: 1px 1px 0 var(--ink);
            transform: translate(5px, 5px);
        }

        .btn-sticker:focus {
            outline: 3px solid rgba(232, 93, 63, 0.4);
            outline-offset: 2px;
        }

        /* ===== 区块标题 ===== */
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--primary);
            background: rgba(232, 93, 63, 0.1);
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
            padding-bottom: 8px;
        }

        .section-head h2::after {
            content: '';
            display: block;
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin: 10px auto 0;
        }

        .section-head .section-desc {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ===== 区块通用间距 ===== */
        .space-section {
            padding: 80px 0;
        }

        .space-section-sm {
            padding: 60px 0;
        }

        /* ===== 规格参数区 ===== */
        .specs-section {
            padding: 90px 40px;
            background: var(--bg);
        }

        .specs-section .container-custom {
            max-width: 1200px;
        }

        .spec-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(43, 43, 40, 0.04);
            height: 100%;
            transition: var(--transition);
        }

        .spec-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .spec-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
            background: rgba(27, 154, 170, 0.1);
            color: var(--secondary);
        }

        .spec-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
        }

        .spec-list {
            margin: 0;
        }

        .spec-row {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
        }

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

        .spec-row dt {
            font-weight: 600;
            font-size: 14px;
            color: var(--ink);
            flex: 0 0 45%;
        }

        .spec-row dd {
            margin: 0;
            font-size: 14px;
            color: var(--text-sub);
            text-align: right;
            flex: 1;
        }

        /* ===== 产品展示区 ===== */
        .product-showcase {
            padding: 90px 40px;
            background: #fff;
        }

        .product-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(43, 43, 40, 0.04);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .product-card .card-img-wrap {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: rgba(27, 154, 170, 0.08);
        }

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

        .product-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .product-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: var(--ink);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            box-shadow: 2px 2px 0 rgba(43, 43, 40, 0.15);
            transform: rotate(-2deg);
        }

        .product-card .card-body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .product-card .card-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .product-card .card-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0;
        }

        /* ===== 优势区 ===== */
        .advantage-section {
            padding: 90px 40px;
            background: var(--bg);
            position: relative;
            overflow: hidden;
        }

        .advantage-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(247, 197, 72, 0.12);
        }

        .advantage-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(27, 154, 170, 0.1);
        }

        .advantage-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(43, 43, 40, 0.04);
            transition: var(--transition);
            height: 100%;
            position: relative;
            z-index: 1;
        }

        .advantage-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .advantage-card .adv-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .advantage-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .advantage-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 注意事项区 ===== */
        .notice-section {
            padding: 90px 40px;
            background: #fff;
        }

        .notice-card {
            background: #FFF9F2;
            border: 1px solid rgba(232, 93, 63, 0.12);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            display: flex;
            gap: 16px;
            height: 100%;
            transition: var(--transition);
        }

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

        .notice-icon {
            flex: 0 0 40px;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: var(--ink);
            font-size: 16px;
        }

        .notice-card h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .notice-card p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-section {
            padding: 90px 40px;
            background: var(--bg);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.open {
            border-color: rgba(232, 93, 63, 0.3);
            background: #FFF9F2;
        }

        .faq-toggle {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: transparent;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
        }

        .faq-toggle .faq-q {
            display: flex;
            align-items: center;
            gap: 10px;
            flex: 1;
        }

        .faq-toggle .faq-q::before {
            content: 'Q';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            background: var(--primary);
            color: #fff;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .faq-toggle .faq-icon {
            font-size: 18px;
            color: var(--text-sub);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            padding: 0 20px;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: #4A4A45;
            line-height: 1.75;
            margin-bottom: 0;
            padding-left: 32px;
        }

        .faq-item.open .faq-answer p {
            padding-left: 32px;
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            padding: 90px 40px;
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(43, 43, 40, 0.08);
        }

        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 30px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: var(--dark-sub);
            padding: 60px 40px 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto 40px;
        }

        .footer-brand .logo-text {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .footer-brand .logo-text .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            background: var(--primary);
            border-radius: 8px;
            font-size: 16px;
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 10px;
            color: var(--dark-sub);
        }

        .footer-brand .contact-email {
            font-size: 14px;
        }

        .footer-brand .contact-email a {
            color: var(--dark-sub);
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        }

        .footer-brand .contact-email a:hover {
            color: #fff;
            border-color: #fff;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            display: block;
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            position: absolute;
            bottom: 0;
            left: 0;
        }

        .footer-col a {
            display: block;
            color: var(--dark-sub);
            font-size: 14px;
            padding: 6px 0;
            line-height: 1.5;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--dark-sub);
        }

        /* ===== 空状态 / 装饰 ===== */
        .empty-state {
            border: 2px dashed var(--border);
            border-radius: var(--radius-lg);
            padding: 60px 30px;
            text-align: center;
            background: rgba(255, 255, 255, 0.5);
        }

        .empty-state i {
            font-size: 42px;
            color: var(--border);
            margin-bottom: 12px;
        }

        .empty-state p {
            color: var(--text-sub);
            font-size: 15px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .sidebar {
                display: none;
            }
            .mobile-topbar {
                display: flex;
            }
            .mobile-menu {
                display: block;
            }
            .page-wrapper {
                margin-left: 0;
            }
            .category-hero {
                padding: 100px 24px 60px;
                min-height: 340px;
            }
            .space-section,
            .specs-section,
            .product-showcase,
            .advantage-section,
            .notice-section,
            .faq-section,
            .cta-section {
                padding: 65px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 90px 20px 40px;
                min-height: 300px;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-sub {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .btn-primary,
            .btn-outline {
                padding: 13px 24px;
            }
            .btn-sticker {
                width: 100%;
                justify-content: center;
            }
            .spec-card,
            .advantage-card {
                margin-bottom: 20px;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .product-card {
                margin-bottom: 20px;
            }
            .notice-card {
                margin-bottom: 16px;
            }
            .cta-inner .btn-sticker {
                width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand {
                margin-bottom: 16px;
            }
        }

        @media (max-width: 520px) {
            .category-hero {
                padding: 84px 16px 32px;
            }
            .category-hero h1 {
                font-size: 1.45rem;
            }
            .category-hero .hero-sub {
                font-size: 15px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 5px 14px;
            }
            .container-custom {
                padding: 0 16px;
            }
            .specs-section,
            .product-showcase,
            .advantage-section,
            .notice-section,
            .faq-section,
            .cta-section {
                padding: 50px 16px;
            }
            .spec-card,
            .advantage-card {
                padding: 22px 18px;
            }
            .faq-toggle {
                padding: 16px 14px;
                font-size: 14px;
            }
            .faq-answer p {
                font-size: 13px;
                padding-left: 20px;
            }
            .faq-item.open .faq-answer p {
                padding-left: 20px;
            }
            .cta-inner h2 {
                font-size: 1.4rem;
            }
            .cta-inner p {
                font-size: 14px;
            }
            .btn-sticker {
                padding: 14px 28px;
                font-size: 15px;
            }
            .site-footer {
                padding: 40px 20px 20px;
            }
            .footer-grid {
                gap: 24px;
            }
        }