:root {
  --primary: #9f1239;
  --accent: #e11d48;
  --bg: #fafafa;
  --text: #3f0a1a;
  --text-light: #7d3b4f;
  --border: #f0e3e7;
  --card-bg: #ffffff;
  --shadow: 0 4px 20px rgba(159, 18, 57, 0.06);
  --shadow-hover: 0 8px 30px rgba(159, 18, 57, 0.12);
  --radius: 8px;
  --font-mono: 'SF Mono', 'Consolas', 'Courier New', monospace;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* 滚动进度条 */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 9999;
  transition: width 0.1s ease;
  border-radius: 0 2px 2px 0;
}

/* 导航 */
.navbar {
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-brand {
  font-weight: 900;
  font-size: 1.35rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.5px;
}

.navbar-brand i {
  color: var(--accent);
  font-size: 1.4rem;
}

.navbar-nav .nav-link {
  font-weight: 500;
  color: var(--text);
  margin: 0 6px;
  padding: 6px 14px !important;
  border-radius: 20px;
  transition: all 0.3s;
  font-size: 14px;
}

.navbar-nav .nav-link:hover {
  color: var(--primary);
  background: rgba(159, 18, 57, 0.06);
}

.navbar-toggler {
  border: 1px solid var(--border);
  color: var(--primary);
}

/* Hero 区 */
.hero-section {
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 60px 0;
  background: radial-gradient(circle at 20% 30%, rgba(159, 18, 57, 0.05) 0%, transparent 50%),
              radial-gradient(circle at 80% 70%, rgba(225, 29, 72, 0.06) 0%, transparent 40%);
}

.hero-content {
  max-width: 860px;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, rgba(159, 18, 57, 0.08), rgba(225, 29, 72, 0.08));
  color: var(--primary);
  font-weight: 600;
  font-size: 13px;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: 24px;
  border: 1px solid rgba(159, 18, 57, 0.12);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-bottom: 36px;
  font-weight: 400;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

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

.btn-hero {
  padding: 14px 36px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-hero-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 8px 24px rgba(159, 18, 57, 0.25);
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(159, 18, 57, 0.35);
  color: #fff;
}

.btn-hero-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.6s;
}

.btn-hero-primary:hover::after {
  left: 100%;
}

.btn-hero-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-hero-outline:hover {
  background: rgba(159, 18, 57, 0.06);
  transform: translateY(-2px);
  color: var(--primary);
}

/* 浮动装饰 */
.float-element {
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 20px;
  background: rgba(159, 18, 57, 0.03);
  animation: floatAnim 6s ease-in-out infinite;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}

.float-element.el1 { top: 15%; left: 8%; animation-delay: 0s; }
.float-element.el2 { top: 25%; right: 10%; animation-delay: 1.5s; }
.float-element.el3 { bottom: 20%; left: 15%; animation-delay: 3s; }
.float-element.el4 { bottom: 15%; right: 20%; animation-delay: 2s; }

@keyframes floatAnim {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(8deg); }
}

/* 通用区块 */
.section-block {
  padding: 70px 0;
  position: relative;
}

.section-block-alt {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-tag {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: inline-block;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
  color: var(--text);
}

.section-desc {
  color: var(--text-light);
  margin-bottom: 40px;
  max-width: 640px;
}

/* 对比表格 */
.compare-wrapper {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 18px 24px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.compare-table th {
  font-weight: 700;
  color: var(--text);
  font-size: 15px;
}

.compare-table thead th {
  background: rgba(159, 18, 57, 0.03);
  border-bottom: 2px solid var(--border);
}

.compare-table tbody tr:hover {
  background: rgba(159, 18, 57, 0.02);
}

.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-highlight {
  background: rgba(159, 18, 57, 0.04);
  font-weight: 600;
  color: var(--primary);
}

.compare-check { color: var(--primary); font-weight: 700; }
.compare-cross { color: #ccc; }

/* 特色卡片 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 20px;
}

.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(159, 18, 57, 0.2);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: transform 0.4s;
  transform-origin: left;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
  background: rgba(159, 18, 57, 0.08);
  color: var(--primary);
}

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

.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 0;
}

.feature-metric {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  margin-top: 12px;
  display: block;
}

/* 步骤条 */
.steps-wrapper {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.step-item {
  flex: 1;
  min-width: 200px;
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px 24px;
  position: relative;
  box-shadow: var(--shadow);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  color: rgba(159, 18, 57, 0.15);
  margin-bottom: 12px;
  line-height: 1;
}

.step-item h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 0;
}

/* 介绍区块 */
.about-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.about-content {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 36px;
  box-shadow: var(--shadow);
}

.about-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--primary);
}

.about-content p {
  margin-bottom: 16px;
  color: var(--text-light);
  font-size: 15px;
}

/* FAQ */
.faq-wrapper {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s;
}

.faq-item:hover {
  box-shadow: var(--shadow-hover);
}

.faq-question {
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-question i {
  color: var(--accent);
  font-size: 14px;
}

.faq-answer {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.7;
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, rgba(159, 18, 57, 0.04), rgba(225, 29, 72, 0.04));
  border-radius: 16px;
  border: 1px solid rgba(159, 18, 57, 0.1);
  padding: 50px 40px;
  text-align: center;
}

.cta-title {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-sub {
  color: var(--text-light);
  margin-bottom: 28px;
  font-size: 15px;
}

/* 友情链接 */
.friend-links {
  padding: 40px 0 60px;
}

.friend-links-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.friend-links-content {
  font-size: 14px;
  color: var(--text-light);
  line-height: 2;
}

/* 页脚 */
.footer {
  background: #1a0a12;
  color: rgba(255,255,255,0.7);
  padding: 50px 0 30px;
  font-size: 14px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.footer-brand {
  font-size: 1.4rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-links a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  display: block;
  padding: 4px 0;
  transition: color 0.3s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  margin-top: 40px;
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: 13px;
}

/* 滚动进入动效 */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 数据展示 */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-bottom: 30px;
}

.data-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 20px;
  text-align: center;
}

.data-value {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.data-label {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* 响应式 */
@media (max-width: 768px) {
  .hero-section { min-height: 80vh; }
  .float-element { display: none; }
  .compare-table th, .compare-table td { padding: 14px 10px; font-size: 13px; }
  .section-title { font-size: 1.5rem; }
  .footer { padding: 40px 0 20px; }
  .feature-grid { grid-template-columns: 1fr; }
}

@media (max-width: 576px) {
  .btn-hero { width: 100%; justify-content: center; }
  .hero-title { font-size: 2.2rem; }
  .compare-table { font-size: 12px; }
  .compare-table th, .compare-table td { padding: 10px 6px; font-size: 12px; }
  .cta-section { padding: 30px 20px; }
}

/* --- 子页面追加 --- */
/* 本页专属样式 - 了解更多页面 */
    .about-hero {
      padding: 80px 0 60px;
      background: linear-gradient(135deg, rgba(159, 18, 57, 0.05) 0%, rgba(225, 29, 72, 0.08) 100%);
      border-bottom: 1px solid var(--border);
    }
.about-hero .section-tag {
      margin-bottom: 16px;
    }
.about-hero h1 {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 20px;
      line-height: 1.3;
    }
.about-hero p.lead {
      font-size: 1.1rem;
      color: var(--text-light);
      max-width: 720px;
      margin: 0 auto 30px;
      line-height: 1.8;
    }
.info-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
      margin-top: 40px;
    }
.info-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: var(--shadow);
      transition: all 0.3s ease;
    }
.info-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
.info-card .icon-wrap {
      width: 56px;
      height: 56px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      background: rgba(159, 18, 57, 0.08);
      color: var(--primary);
      margin-bottom: 20px;
    }
.info-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 12px;
    }
.info-card p {
      font-size: 0.95rem;
      color: var(--text-light);
      line-height: 1.7;
      margin: 0;
    }
.feature-list {
      margin-top: 20px;
      padding: 0;
      list-style: none;
    }
.feature-list li {
      padding: 10px 0;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-light);
      line-height: 1.6;
    }
.feature-list li:last-child {
      border-bottom: none;
    }
.feature-list i {
      color: var(--primary);
      margin-top: 4px;
      flex-shrink: 0;
    }
.timeline {
      position: relative;
      padding-left: 30px;
      margin: 30px 0;
    }
.timeline::before {
      content: '';
      position: absolute;
      left: 8px;
      top: 0;
      bottom: 0;
      width: 2px;
      background: linear-gradient(to bottom, var(--primary), var(--accent));
      opacity: 0.2;
    }
.timeline-item {
      position: relative;
      padding-bottom: 28px;
    }
.timeline-item:last-child {
      padding-bottom: 0;
    }
.timeline-item::before {
      content: '';
      position: absolute;
      left: -26px;
      top: 6px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--primary);
      border: 2px solid var(--bg);
      box-shadow: 0 0 0 2px var(--primary);
    }
.timeline-item h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 6px;
    }
.timeline-item p {
      font-size: 0.92rem;
      color: var(--text-light);
      line-height: 1.6;
      margin: 0;
    }
.stat-row {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin: 40px 0;
    }
.stat-item {
      text-align: center;
      padding: 24px 16px;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
    }
.stat-item .number {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      font-family: var(--font-mono);
      display: block;
      margin-bottom: 8px;
    }
.stat-item .label {
      font-size: 0.9rem;
      color: var(--text-light);
      font-weight: 500;
    }
.content-section {
      padding: 60px 0;
    }
.content-section-alt {
      background: rgba(159, 18, 57, 0.03);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
.step-box {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px;
      height: 100%;
      transition: all 0.3s ease;
    }
.step-box:hover {
      box-shadow: var(--shadow-hover);
    }
.step-box h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 10px;
    }
.step-box p {
      font-size: 0.92rem;
      color: var(--text-light);
      line-height: 1.7;
      margin: 0;
    }

/* --- 子页面追加 --- */
/* 本页专属小范围样式 */
    .disclaimer-content {
      background: var(--card-bg);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 2.5rem;
      margin-bottom: 2rem;
      border: 1px solid var(--border);
    }
.disclaimer-content h2 {
      color: var(--primary);
      font-weight: 800;
      font-size: 1.5rem;
      margin-top: 2rem;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
.disclaimer-content h2 i {
      color: var(--accent);
      font-size: 1.2rem;
    }
.disclaimer-content p, .disclaimer-content li {
      color: var(--text);
      line-height: 1.8;
      margin-bottom: 0.8rem;
    }
.disclaimer-content ul {
      padding-left: 1.2rem;
      margin-bottom: 1rem;
    }
.disclaimer-content li {
      margin-bottom: 0.4rem;
    }
.highlight-box {
      background: rgba(159, 18, 57, 0.05);
      border-left: 4px solid var(--primary);
      padding: 1rem 1.2rem;
      border-radius: 0 8px 8px 0;
      margin: 1.5rem 0;
    }
.highlight-box p {
      margin-bottom: 0.3rem;
      color: var(--text-light);
    }
.last-updated {
      font-family: var(--font-mono);
      font-size: 0.85rem;
      color: var(--text-light);
      margin-top: 2rem;
      padding-top: 1rem;
      border-top: 1px dashed var(--border);
    }

/* --- 子页面追加 --- */
/* 隐私页特殊微调 —— 沿用首页变量，覆盖 Bootstrap 白底 */
    body {
      background: var(--bg);
      color: var(--text);
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    }
/* 确保任何卡片、列表、表单都被站点配色覆盖 */
    .card, .card-body, .card-header, .card-footer,
    .list-group-item, .form-control, .form-select, .accordion-item, .accordion-button {
      background-color: var(--card-bg) !important;
      color: var(--text) !important;
      border-color: var(--border) !important;
    }
.accordion-button:not(.collapsed) {
      background-color: rgba(159, 18, 57, 0.05) !important;
      color: var(--primary) !important;
    }
.privacy-hero {
      background: linear-gradient(145deg, rgba(159, 18, 57, 0.02), rgba(225, 29, 72, 0.03));
      border-bottom: 1px solid var(--border);
    }
.privacy-section {
      background: var(--card-bg);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 2rem 2rem 1.5rem;
      margin-bottom: 2rem;
      border: 1px solid rgba(240, 227, 231, 0.6);
    }
.privacy-section h2 {
      color: var(--primary);
      font-weight: 700;
      font-size: 1.6rem;
      margin-bottom: 1.25rem;
      padding-bottom: 0.5rem;
      border-bottom: 2px solid var(--border);
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }
.privacy-section h2 i {
      color: var(--accent);
      font-size: 1.3rem;
    }
.privacy-section p, .privacy-section li {
      color: var(--text);
      line-height: 1.75;
      font-size: 0.98rem;
    }
.privacy-section strong {
      color: var(--primary);
    }
.privacy-list {
      padding-left: 1.2rem;
      list-style-type: none;
    }
.privacy-list li {
      position: relative;
      padding-left: 1.8rem;
      margin-bottom: 0.6rem;
    }
.privacy-list li::before {
      content: "🍉";
      position: absolute;
      left: 0;
      top: 0;
      color: var(--accent);
      font-size: 0.9rem;
      opacity: 0.8;
    }
.muted-text {
      color: var(--text-light);
      font-size: 0.9rem;
    }
.navbar .nav-link.active {
      color: var(--primary) !important;
      font-weight: 600;
      border-bottom: 2px solid var(--accent);
    }
/* 页脚与首页统一 */
    .footer-link, .footer-bottom {
      color: var(--text-light);
    }
.footer-link a {
      color: var(--primary);
      text-decoration: none;
    }
.footer-link a:hover {
      color: var(--accent);
    }
/* 覆盖 bootstrap 可能带来的白底 */
    .privacy-section, .navbar, .navbar-collapse {
      background-color: transparent;
    }
.navbar-toggler-icon {
      filter: invert(30%) sepia(30%) saturate(3000%) hue-rotate(315deg);
    }

/* --- 子页面追加 --- */
/* 覆盖 Bootstrap 组件白底黑字问题 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
        .form-control, .form-select, .form-label, .input-group-text,
        .table, .list-group-item, .accordion-item, .accordion-button, .accordion-body,
        .modal-content, .modal-header, .modal-body, .dropdown-menu, .dropdown-item,
        .nav-link, .navbar, .navbar-brand, .btn-light, .btn-outline-* {
            background: var(--card-bg);
            color: var(--text);
            border-color: var(--border);
        }
.form-control::placeholder {
            color: var(--text-light);
            opacity: .7;
        }
.accordion-button:focus {
            box-shadow: 0 0 0 .2rem rgba(159, 18, 57, .15);
        }
/* 自定义少量排版 */
        .guide-step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2.2rem;
            height: 2.2rem;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-weight: 700;
            margin-right: .5rem;
            flex-shrink: 0;
        }
.guide-callout {
            background: var(--card-bg);
            border-left: 4px solid var(--accent);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 1.25rem 1.5rem;
            margin: 2rem 0;
        }
.guide-callout p:last-child {
            margin-bottom: 0;
        }
.feature-card i {
            color: var(--primary);
        }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.accordion-header { background:transparent !important; }