/* BASE - 青少年财商成长体系 */
:root {
  --color-primary: #1a365d;
  --color-primary-light: #2c5282;
  --color-accent: #d69e2e;
  --color-accent-light: #ecc94b;
  --color-bg: #f7fafc;
  --color-bg-alt: #edf2f7;
  --color-text: #2d3748;
  --color-text-light: #718096;
  --color-white: #ffffff;
  --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius: 12px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 导航 */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 54, 93, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--color-accent-light);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

.nav-auth {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
}

.auth-status {
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.auth-btn {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: transparent;
  color: #fff;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.auth-btn:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, #2a4365 100%);
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(214, 158, 46, 0.15) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-accent-light);
  margin-bottom: 24px;
}

.hero-tagline {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  margin-bottom: 40px;
}

.cta-btn {
  display: inline-block;
  padding: 16px 40px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  transition: all var(--transition);
  box-shadow: var(--shadow);
}

.cta-btn:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* 区块通用 */
section {
  padding: 80px 0;
}

section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 40px;
  text-align: center;
}

/* 关于 BASE */
.intro {
  background: var(--color-white);
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.intro-card {
  background: var(--color-bg-alt);
  padding: 32px;
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
}

.intro-card h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.intro-union {
  text-align: center;
  font-size: 1.0625rem;
  color: var(--color-text-light);
  max-width: 700px;
  margin: 0 auto;
}

/* 愿景 */
.vision {
  background: var(--color-bg-alt);
}

.vision-lead {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 20px;
  text-align: center;
}

.vision-list {
  list-style: none;
  max-width: 700px;
  margin: 0 auto 32px;
}

.vision-list li {
  padding: 12px 0;
  padding-left: 28px;
  position: relative;
}

.vision-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

.vision-quote {
  max-width: 700px;
  margin: 0 auto;
  padding: 24px 32px;
  background: var(--color-white);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-primary);
  font-style: italic;
  color: var(--color-text);
}

/* 为什么现在 */
.why {
  background: var(--color-white);
}

.why-grid {
  display: grid;
  gap: 24px;
}

.why-card {
  padding: 32px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
}

.why-card.highlight {
  background: linear-gradient(135deg, rgba(26, 54, 93, 0.05) 0%, rgba(214, 158, 46, 0.08) 100%);
  border: 2px solid var(--color-accent);
}

.why-card h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.why-card ul {
  list-style: none;
}

.why-card ul li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
}

.why-card ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

/* 能力模型 */
.model {
  background: var(--color-bg-alt);
}

.model-desc {
  text-align: center;
  margin-bottom: 40px;
  color: var(--color-text-light);
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.model-card {
  background: var(--color-white);
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

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

.model-num {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.model-card h4 {
  font-size: 1.125rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.model-note {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

/* 产品形态 */
.product {
  background: var(--color-white);
}

.product-goal {
  text-align: center;
  margin-bottom: 40px;
  font-size: 1.0625rem;
}

.product-structure {
  margin-bottom: 48px;
}

.product-structure h3,
.phases h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.product-structure ul {
  list-style: none;
}

.product-structure ul li {
  padding: 10px 0;
  padding-left: 24px;
  position: relative;
}

.product-structure ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

.phases {
  display: grid;
  gap: 24px;
}

.phase-card {
  padding: 32px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  border-top: 4px solid var(--color-primary);
}

.phase-card h4 {
  font-size: 1.125rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.phase-card p {
  margin-bottom: 8px;
}

.phase-card p:last-child {
  margin-bottom: 0;
}

/* BASE核心课程 */
.courses {
  background: var(--color-white);
}

.courses-summary {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 56px;
  padding: 24px 32px;
  background: linear-gradient(135deg, rgba(26, 54, 93, 0.05) 0%, rgba(214, 158, 46, 0.08) 100%);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-bottom: 48px;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.course-card {
  background: var(--color-white);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border-top: 4px solid var(--color-primary);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 320px;
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-top-color: var(--color-accent);
}

.course-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 20px;
  line-height: 1;
}

.course-card h3 {
  font-size: 1.375rem;
  color: var(--color-primary);
  margin-bottom: 12px;
  font-weight: 700;
  line-height: 1.4;
}

.course-core {
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 16px;
  font-size: 1rem;
  line-height: 1.5;
}

.course-desc {
  color: var(--color-text-light);
  margin-bottom: auto;
  line-height: 1.7;
  font-size: 0.9375rem;
  flex-grow: 1;
}

.course-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition);
  margin-top: 24px;
  font-size: 0.9375rem;
}

.course-link:hover {
  color: var(--color-accent);
}

.courses-cta {
  text-align: center;
  margin-top: 40px;
}

/* AI 赋能 */
.ai {
  background: var(--color-bg-alt);
}

.ai-lead {
  text-align: center;
  margin-bottom: 40px;
  color: var(--color-text);
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.ai-item {
  background: var(--color-white);
  padding: 28px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
}

.ai-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 12px;
}

.ai-item h4 {
  font-size: 1rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.ai-note {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--color-text-light);
  font-style: italic;
}

/* BASE 核心能力 */
.partners {
  background: var(--color-white);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.partner-card {
  padding: 32px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
}

.partner-card h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.partner-card ul {
  list-style: none;
}

.partner-card ul li {
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.partner-card ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.partners-joint {
  padding: 24px 32px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius);
  color: var(--color-white);
}

.partners-joint h4 {
  margin-bottom: 8px;
}

.partners-joint p {
  font-size: 0.9375rem;
  opacity: 0.95;
}

/* 商业模式 */
.business {
  background: var(--color-bg-alt);
}

.business-lead {
  text-align: center;
  margin-bottom: 24px;
}

.business-list {
  max-width: 600px;
  margin: 0 auto;
  list-style: none;
}

.business-list li {
  padding: 12px 0;
  padding-left: 28px;
  position: relative;
}

.business-list li::before {
  content: '▪';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* Watch List */
.watchlist {
  background: var(--color-white);
}

.watchlist-lead {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 30px;
}

.watchlist-controls {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.watchlist-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
}

.watchlist-field label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--color-primary);
  font-weight: 600;
}

.watchlist-field input,
.watchlist-field select {
  width: 100%;
  border: 1px solid #d2d8e1;
  border-radius: 10px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--color-white);
}

.watchlist-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.watchlist-btn {
  border: 1px solid var(--color-primary-light);
  color: var(--color-primary);
  background: var(--color-white);
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.watchlist-btn:hover {
  transform: translateY(-1px);
}

.watchlist-btn.primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.watchlist-btn.danger {
  border-color: #c53030;
  color: #c53030;
}

.watchlist-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.watchlist-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.watchlist-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  min-width: 1000px;
}

.watchlist-table th,
.watchlist-table td {
  padding: 12px 10px;
  border-bottom: 1px solid #e2e8f0;
  text-align: left;
  font-size: 0.9rem;
}

.watchlist-table th {
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  position: sticky;
  top: 0;
}

.watchlist-table tbody tr:hover {
  background: #f8fbff;
}

.watchlist-remove-btn {
  border: 0;
  background: #fff1f1;
  color: #c53030;
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-weight: 600;
}

.price-up {
  color: #2f855a;
  font-weight: 700;
}

.price-down {
  color: #c53030;
  font-weight: 700;
}

.muted-cell {
  color: #90a0b2;
}

/* 总结 */
.summary {
  background: var(--color-white);
}

.summary-text {
  font-size: 1.25rem;
  text-align: center;
  margin-bottom: 16px;
}

.summary p {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  color: var(--color-text-light);
}

/* Footer */
.footer {
  padding: 40px 0;
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
}

.footer-note {
  font-size: 0.875rem;
  opacity: 0.7;
  margin-top: 8px;
}

/* 课程页面样式 */
.courses-hero {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  text-align: center;
}

.courses-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--color-white);
  margin-bottom: 24px;
}

.courses-hero-tagline {
  font-size: 1.25rem;
  color: var(--color-accent-light);
  font-weight: 500;
  max-width: 800px;
  margin: 0 auto;
}

.module-section {
  padding: 80px 0;
  background: var(--color-white);
}

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

.module-header {
  text-align: center;
  margin-bottom: 48px;
}

.module-number {
  display: inline-block;
  padding: 8px 20px;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  border-radius: 20px;
  font-size: 0.875rem;
  margin-bottom: 16px;
}

.module-header h2 {
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.module-core {
  font-size: 1.125rem;
  color: var(--color-accent);
  font-weight: 600;
}

.module-content {
  max-width: 900px;
  margin: 0 auto;
}

.module-directions {
  margin-bottom: 48px;
}

.module-directions h3,
.module-output h3 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
}

.direction-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 12px;
}

.direction-list li {
  padding: 12px 16px;
  padding-left: 32px;
  background: var(--color-bg-alt);
  border-radius: 8px;
  position: relative;
  transition: all var(--transition);
}

.direction-list li:hover {
  background: rgba(214, 158, 46, 0.1);
  transform: translateX(4px);
}

.direction-list li::before {
  content: '▸';
  position: absolute;
  left: 12px;
  color: var(--color-accent);
  font-weight: bold;
}

.module-output {
  margin-top: 40px;
}

.output-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.output-item {
  background: var(--color-white);
  padding: 32px 24px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border-top: 3px solid var(--color-primary);
}

.output-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-top-color: var(--color-accent);
}

.output-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 12px;
}

.output-item p {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 1.0625rem;
}

.courses-summary-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.summary-box {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  padding: 48px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.summary-box h2 {
  color: var(--color-primary);
  margin-bottom: 24px;
}

.summary-quote {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.8;
  padding: 24px;
  background: linear-gradient(135deg, rgba(26, 54, 93, 0.05) 0%, rgba(214, 158, 46, 0.1) 100%);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
}

/* 响应式 */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-primary);
    padding: 24px;
    gap: 16px;
  }

  section {
    padding: 60px 0;
  }

  .hero {
    padding: 100px 24px 60px;
  }

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

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

  .courses-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    max-width: 100%;
  }

  .course-card {
    min-height: auto;
    padding: 32px 24px;
  }

  .course-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
  }

  .course-card h3 {
    font-size: 1.25rem;
  }

  .courses-hero {
    padding: 100px 0 60px;
  }

  .module-header h2 {
    font-size: 1.5rem;
  }

  .direction-list {
    grid-template-columns: 1fr;
  }

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

  .summary-quote {
    font-size: 1.25rem;
  }

  .watchlist-controls {
    padding: 18px;
  }

  .watchlist-actions {
    flex-direction: column;
  }

  .watchlist-btn {
    width: 100%;
  }
}