:root {
  --primary: #4f46e5;
  --accent: #7c3aed;
  --bg: #f5f3ff;
  --text: #1e1b4b;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-soft: 0 8px 30px rgba(79, 70, 229, 0.12);
}

* { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-weight: 800;
  letter-spacing: -0.02em;
}

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

/* 点阵背景 */
.dot-bg {
  background-image: radial-gradient(circle, rgba(79, 70, 229, 0.12) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* 细网格背景 */
.grid-bg {
  background-image: linear-gradient(rgba(79, 70, 229, 0.06) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(79, 70, 229, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* 导航 */
.navbar-custom {
  background: rgba(245, 243, 255, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(79, 70, 229, 0.08);
  padding: 16px 0;
}

.navbar-brand-custom {
  font-weight: 900;
  font-size: 1.4rem;
  color: var(--text) !important;
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-brand-custom i {
  color: var(--primary);
  font-size: 1.3rem;
}

.nav-link-custom {
  font-weight: 500;
  color: var(--text) !important;
  margin: 0 8px;
  padding: 8px 14px !important;
  border-radius: 50px;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.nav-link-custom:hover {
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary) !important;
}

/* Hero */
.hero-section {
  position: relative;
  padding: 100px 0 80px;
  background: var(--bg);
  overflow: hidden;
}

.hero-parallax {
  position: absolute;
  top: -20%; left: 0;
  width: 100%; height: 140%;
  background: url('{随机图片}') center/cover no-repeat;
  opacity: 0.08;
  transform: translateY(0);
  will-change: transform;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  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: 1.1rem;
  color: rgba(30, 27, 75, 0.7);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.btn-custom-primary {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 14px 32px;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
  transition: all 0.3s ease;
}

.btn-custom-primary:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(124, 58, 237, 0.3);
  color: #fff;
}

.btn-custom-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 50px;
  padding: 12px 30px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-custom-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* 数据统计 */
.stats-section {
  padding: 50px 0;
  position: relative;
}

.stat-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  text-align: center;
  box-shadow: var(--shadow-soft);
  transition: transform 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-label {
  color: rgba(30, 27, 75, 0.7);
  font-size: 0.9rem;
  font-weight: 500;
}

/* 使用说明手风琴 */
.instructions-section {
  padding: 60px 0;
}

.accordion-custom .accordion-item {
  background: #fff;
  border: none;
  border-radius: var(--radius-md) !important;
  margin-bottom: 16px;
  box-shadow: 0 4px 15px rgba(79, 70, 229, 0.06);
  overflow: hidden;
}

.accordion-custom .accordion-button {
  background: #fff;
  color: var(--text);
  font-weight: 600;
  padding: 20px 24px;
  border-radius: var(--radius-md) !important;
  box-shadow: none;
}

.accordion-custom .accordion-button:not(.collapsed) {
  background: rgba(79, 70, 229, 0.05);
  color: var(--primary);
}

.accordion-custom .accordion-button:focus {
  box-shadow: none;
}

.accordion-custom .accordion-body {
  padding: 0 24px 20px;
  color: rgba(30, 27, 75, 0.75);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* 特色图标列表 */
.features-section {
  padding: 60px 0;
  position: relative;
}

.feature-item {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  height: 100%;
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.08);
  transition: all 0.3s ease;
}

.feature-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(79, 70, 229, 0.12);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(124, 58, 237, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.4rem;
  color: var(--primary);
}

.feature-item h5 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.feature-item p {
  font-size: 0.9rem;
  color: rgba(30, 27, 75, 0.7);
  line-height: 1.7;
  margin: 0;
}

/* 对比表格 */
.compare-section {
  padding: 60px 0;
}

.compare-table {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  width: 100%;
}

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

.compare-table th,
.compare-table td {
  padding: 18px 24px;
  text-align: center;
  border-bottom: 1px solid rgba(79, 70, 229, 0.08);
  font-size: 0.95rem;
}

.compare-table th {
  background: rgba(79, 70, 229, 0.05);
  font-weight: 700;
  color: var(--text);
}

.compare-table td:first-child {
  font-weight: 600;
  text-align: left;
  color: var(--text);
}

.compare-table .fa-check {
  color: var(--primary);
}

.compare-table .fa-times {
  color: #ef4444;
}

/* FAQ */
.faq-section {
  padding: 60px 0;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: 0 4px 15px rgba(79, 70, 229, 0.06);
  cursor: pointer;
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 8px 25px rgba(79, 70, 229, 0.12);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1rem;
}

.faq-answer {
  display: none;
  padding-top: 16px;
  color: rgba(30, 27, 75, 0.7);
  line-height: 1.8;
  font-size: 0.95rem;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .fa-chevron-down {
  transform: rotate(180deg);
}

.fa-chevron-down {
  transition: transform 0.3s ease;
  color: var(--primary);
}

/* CTA */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: url('{随机图片}') center/cover no-repeat;
  opacity: 0.1;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
}

.cta-content h2 {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 32px;
}

.btn-cta {
  background: #fff;
  color: var(--primary);
  border: none;
  border-radius: 50px;
  padding: 16px 40px;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
  color: var(--accent);
}

/* 友情链接 */
.friend-links {
  padding: 40px 0;
  background: #fff;
  border-top: 1px solid rgba(79, 70, 229, 0.08);
}

.friend-links h6 {
  color: rgba(30, 27, 75, 0.5);
  font-weight: 600;
  margin-bottom: 16px;
}

/* 页脚 */
.footer-custom {
  background: var(--text);
  color: rgba(255, 255, 255, 0.8);
  padding: 40px 0;
}

.footer-custom a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-brand {
  font-weight: 900;
  font-size: 1.3rem;
  color: #fff !important;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 海报hover */
.poster-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fff;
  box-shadow: 0 4px 15px rgba(79, 70, 229, 0.1);
  transition: all 0.3s ease;
}

.poster-card img {
  width: 100%;
  aspect-ratio: 2/3;
  object-fit: cover;
}

.play-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(30, 27, 75, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.poster-card:hover .play-overlay {
  opacity: 1;
}

.play-btn {
  width: 60px;
  height: 60px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.4rem;
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.4);
}

/* 区块标题 */
.section-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}

.section-subtitle {
  color: rgba(30, 27, 75, 0.6);
  font-size: 0.95rem;
  margin-bottom: 40px;
}

/* 响应式 */
@media (max-width: 768px) {
  .hero-section { padding: 70px 0 50px; }
  .stat-card { margin-bottom: 16px; }
  .feature-item { margin-bottom: 16px; }
  .navbar-collapse { background: rgba(245, 243, 255, 0.98); border-radius: var(--radius-md); padding: 12px; }
}

/* --- 子页面追加 --- */
/* 关于页专属微调 */
        .about-hero {
            padding: 120px 0 80px;
            position: relative;
        }
.about-hero .hero-title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }
.about-hero .hero-subtitle {
            font-size: 1.2rem;
            opacity: 0.85;
            max-width: 640px;
        }
.about-section {
            padding: 80px 0;
        }
.about-section-alt {
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-lg);
            padding: 60px;
        }
.about-section h2 {
            font-weight: 800;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            color: var(--primary);
        }
.about-section h3 {
            font-weight: 700;
            font-size: 1.3rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
.about-section p {
            line-height: 1.9;
            margin-bottom: 1.2rem;
            font-size: 1.02rem;
        }
.about-section ul {
            padding-left: 1.2rem;
        }
.about-section li {
            margin-bottom: 0.6rem;
            line-height: 1.8;
        }
.timeline-item {
            position: relative;
            padding-left: 30px;
            margin-bottom: 2rem;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.2);
        }
.timeline-item::after {
            content: '';
            position: absolute;
            left: 5px;
            top: 24px;
            width: 2px;
            height: calc(100% + 8px);
            background: linear-gradient(to bottom, var(--primary), transparent);
        }
.timeline-item:last-child::after {
            display: none;
        }
.timeline-date {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 0.3rem;
        }
.value-card {
            background: rgba(79, 70, 229, 0.08);
            border: 1px solid rgba(79, 70, 229, 0.15);
            border-radius: var(--radius-md);
            padding: 30px;
            height: 100%;
            transition: all 0.3s ease;
        }
.value-card:hover {
            background: rgba(79, 70, 229, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-soft);
        }
.value-card i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
.value-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }
.value-card p {
            font-size: 0.95rem;
            opacity: 0.85;
            line-height: 1.7;
        }
.about-cta {
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.15), rgba(124, 58, 237, 0.1));
            border-radius: var(--radius-lg);
            padding: 60px;
            text-align: center;
            margin-top: 60px;
        }
.about-cta h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            color: var(--text);
        }
.about-cta p {
            font-size: 1.1rem;
            opacity: 0.8;
            margin-bottom: 2rem;
        }
.about-hero {
                padding: 100px 0 60px;
            }
.about-hero .hero-title {
                font-size: 2rem;
            }
.about-section {
                padding: 60px 0;
            }
.about-section-alt {
                padding: 30px;
            }
.about-cta {
                padding: 40px 20px;
            }
.about-cta h2 {
                font-size: 1.6rem;
            }

/* --- 子页面追加 --- */
/* 本页专属样式 - 仅补充免责声明页特有的排版细节 */
        .legal-hero {
            padding: 100px 0 60px;
            background: var(--bg);
            position: relative;
        }
.legal-card {
            background: rgba(255,255,255,.85);
            border-radius: var(--radius-lg);
            padding: 2rem;
            margin-bottom: 1.5rem;
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(79, 70, 229, 0.08);
        }
.legal-card h2 {
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
.legal-card h2 i {
            color: var(--accent);
            font-size: 1.2rem;
        }
.legal-card p, .legal-card li {
            color: #3a3556;
            font-size: 0.95rem;
            line-height: 1.8;
        }
.legal-card ul {
            padding-left: 1.2rem;
            margin-bottom: 0.5rem;
        }
.legal-card li {
            margin-bottom: 0.5rem;
        }
.legal-card strong {
            color: var(--primary);
            font-weight: 600;
        }
.legal-tag {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-right: 0.5rem;
        }
.update-date {
            font-size: 0.85rem;
            color: #7a7598;
            margin-top: 0.5rem;
            font-style: italic;
        }
.legal-hero { padding: 80px 0 40px; }
.legal-card { padding: 1.5rem; }

/* --- 子页面追加 --- */
/* 隐私政策页面专属样式 */
        .privacy-hero {
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(124, 58, 237, 0.08) 100%);
            border-bottom: 1px solid rgba(79, 70, 229, 0.1);
            padding: 80px 0 50px;
            position: relative;
            overflow: hidden;
        }
.privacy-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
        }
.privacy-container {
            max-width: 900px;
            margin: 0 auto;
            padding: 60px 20px;
        }
.privacy-section {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(79, 70, 229, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.privacy-section:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(79, 70, 229, 0.15);
        }
.privacy-section h2 {
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid rgba(79, 70, 229, 0.1);
            display: flex;
            align-items: center;
            gap: 12px;
        }
.privacy-section h2 i {
            font-size: 1.3rem;
            color: var(--accent);
        }
.privacy-section h3 {
            color: var(--text);
            font-size: 1.15rem;
            font-weight: 600;
            margin: 25px 0 12px;
        }
.privacy-section p {
            color: #4a4a6a;
            line-height: 1.8;
            margin-bottom: 15px;
            font-size: 0.95rem;
        }
.privacy-section ul {
            padding-left: 20px;
            margin-bottom: 15px;
        }
.privacy-section ul li {
            color: #4a4a6a;
            line-height: 1.8;
            margin-bottom: 8px;
            position: relative;
            font-size: 0.95rem;
        }
.privacy-section ul li::before {
            content: '▸';
            color: var(--primary);
            position: absolute;
            left: -18px;
        }
.privacy-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 15px;
        }
.privacy-highlight {
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(124, 58, 237, 0.05) 100%);
            border-left: 4px solid var(--primary);
            padding: 20px 25px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
        }
.privacy-highlight p {
            margin-bottom: 0;
            font-style: italic;
        }
.privacy-date {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 30px;
        }
.privacy-container {
                padding: 30px 15px;
            }
.privacy-section {
                padding: 25px 20px;
            }
.privacy-hero {
                padding: 60px 0 30px;
            }

/* --- 子页面追加 --- */
/* 本页专用微调，不影响全局 */
    .guide-hero {
      padding: 4rem 0 2rem;
      position: relative;
    }
.guide-section-title {
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.02em;
      margin-bottom: 1.5rem;
      position: relative;
      display: inline-block;
    }
.guide-section-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -8px;
      width: 40%;
      height: 3px;
      background: var(--accent);
      border-radius: 4px;
    }
.guide-card-custom {
      background: rgba(255, 255, 255, 0.75);
      backdrop-filter: blur(6px);
      border: 1px solid rgba(79, 70, 229, 0.15);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      box-shadow: var(--shadow-soft);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      height: 100%;
    }
.guide-card-custom:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 35px rgba(79, 70, 229, 0.18);
    }
.guide-icon-circle {
      width: 52px;
      height: 52px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1rem;
      box-shadow: 0 6px 14px rgba(79, 70, 229, 0.3);
    }
.guide-step {
      border-left: 4px solid var(--accent);
      padding-left: 1.25rem;
      margin-bottom: 1.8rem;
    }
.guide-step h4 {
      font-weight: 700;
      color: var(--text);
    }
.guide-tip-box {
      background: rgba(124, 58, 237, 0.06);
      border: 1px dashed var(--accent);
      border-radius: var(--radius-sm);
      padding: 1rem 1.2rem;
      color: var(--text);
      margin-top: 1.2rem;
    }
.table-guide-custom {
      border-collapse: separate;
      border-spacing: 0;
      width: 100%;
    }
.table-guide-custom th {
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      padding: 14px 16px;
    }
.table-guide-custom td {
      background: rgba(255,255,255,0.7);
      padding: 12px 16px;
      border-bottom: 1px solid rgba(79,70,229,0.1);
    }
.table-guide-custom tr:last-child td {
      border-bottom: none;
    }
.badge-guide {
      background: var(--accent);
      color: #fff;
      font-size: 0.8rem;
      font-weight: 600;
      padding: 0.35rem 0.75rem;
      border-radius: 50rem;
    }
/* 确保任何 bootstrap 组件不干扰 */
    .accordion-button, .accordion-item {
      background: transparent !important;
      border: none !important;
    }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#1e1b4b !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#1e1b4b !important; }
.accordion-header { background:transparent !important; }