/* ======================================
   投资理财知识分享站 — 设计系统
   作者：程序员柚子
   ====================================== */


/* ---------- CSS 变量 ---------- */
:root {
  /* 主色 */
  --bg-primary: #0a0f1e;
  --bg-secondary: #111827;
  --bg-card: #151d30;
  --bg-card-hover: #1a2540;

  /* 点缀色 */
  --accent-gold: #d4a745;
  --accent-gold-light: #e8c56a;
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-purple: #8b5cf6;
  --accent-orange: #f59e0b;
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;

  /* 文字 */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* 边框 */
  --border-color: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(212, 167, 69, 0.3);

  /* 字体 */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;

  /* 间距 */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* 阴影 */
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(212, 167, 69, 0.15);

  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* 容器 */
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-gold-light);
}

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

ul,
ol {
  list-style: none;
}

/* ---------- 背景装饰 ---------- */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(212, 167, 69, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(139, 92, 246, 0.03) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

/* ---------- 容器 ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 15, 30, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-md) 0;
  transition: background var(--transition-normal);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-gold);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-logo span {
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-gold);
  background: rgba(212, 167, 69, 0.1);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: all var(--transition-fast);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero ---------- */
.hero {
  padding: calc(var(--space-4xl) + 60px) 0 var(--space-4xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212, 167, 69, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-tag {
  display: inline-block;
  background: rgba(212, 167, 69, 0.1);
  border: 1px solid rgba(212, 167, 69, 0.25);
  color: var(--accent-gold);
  font-size: 0.8rem;
  padding: var(--space-xs) var(--space-md);
  border-radius: 50px;
  margin-bottom: var(--space-lg);
  letter-spacing: 1px;
  animation: fadeInDown 0.8s ease both;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-gold) 50%, var(--text-primary) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s ease-in-out infinite, fadeInUp 0.8s ease both 0.1s;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  animation: fadeInUp 0.8s ease both 0.2s;
}

.hero-author {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: var(--space-sm) var(--space-lg);
  border-radius: 50px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  animation: fadeInUp 0.8s ease both 0.3s;
}

.hero-author .author-icon {
  font-size: 1.2rem;
}

.hero-author .author-name {
  color: var(--accent-gold);
  font-weight: 500;
}

.hero-actions {
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s ease both 0.25s;
}

.hero-note {
  margin-top: var(--space-sm);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.5rem;
  border-radius: 999px;
  border: 1px solid rgba(212, 167, 69, 0.35);
  background: linear-gradient(135deg, rgba(212, 167, 69, 0.18), rgba(59, 130, 246, 0.14));
  color: var(--text-primary);
  font-weight: 600;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.cta-button:hover {
  transform: translateY(-2px);
  border-color: rgba(212, 167, 69, 0.55);
  background: linear-gradient(135deg, rgba(212, 167, 69, 0.24), rgba(59, 130, 246, 0.18));
  color: var(--text-primary);
}

/* ---------- 板块标题 ---------- */
.section-title {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-title h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.section-title p {
  color: var(--text-secondary);
  font-size: 1rem;
}

.section-title .title-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-gold), transparent);
  margin: var(--space-md) auto 0;
  border-radius: 3px;
}

/* ---------- 导航卡片网格 ---------- */
.cards-section {
  padding: var(--space-3xl) 0 var(--space-4xl);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-decoration: none;
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(30px);
}

.card.visible {
  opacity: 1;
  transform: translateY(0);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--accent-gold));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(212, 167, 69, 0.2);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  background: var(--bg-card-hover);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-lg);
  display: inline-block;
  transition: transform var(--transition-normal);
}

.card:hover .card-icon {
  transform: scale(1.15);
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  flex: 1;
}

.card-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--accent-gold);
  font-size: 0.85rem;
  margin-top: var(--space-lg);
  opacity: 0;
  transform: translateX(-10px);
  transition: all var(--transition-normal);
}

.card:hover .card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* 卡片颜色变体 */
.card[data-accent="gold"] {
  --card-accent: var(--accent-gold);
}

.card[data-accent="blue"] {
  --card-accent: var(--accent-blue);
}

.card[data-accent="green"] {
  --card-accent: var(--accent-green);
}

.card[data-accent="red"] {
  --card-accent: var(--accent-red);
}

.card[data-accent="purple"] {
  --card-accent: var(--accent-purple);
}

.card[data-accent="orange"] {
  --card-accent: var(--accent-orange);
}

.card[data-accent="cyan"] {
  --card-accent: var(--accent-cyan);
}

.card[data-accent="pink"] {
  --card-accent: var(--accent-pink);
}

/* ---------- 理念区域 ---------- */
.philosophy {
  padding: var(--space-3xl) 0;
  text-align: center;
}

.philosophy-box {
  background: linear-gradient(135deg, rgba(212, 167, 69, 0.05), rgba(59, 130, 246, 0.05));
  border: 1px solid rgba(212, 167, 69, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-3xl);
  max-width: 800px;
  margin: 0 auto;
}

.philosophy-box h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--accent-gold);
  margin-bottom: var(--space-lg);
}

.philosophy-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

.philosophy-box p+p {
  margin-top: var(--space-md);
}

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--border-color);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.footer-author {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.footer-author span {
  color: var(--accent-gold);
  font-weight: 500;
}

.footer-disclaimer {
  font-size: 0.75rem;
  color: var(--text-muted);
  max-width: 500px;
  line-height: 1.6;
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---------- 知识页面通用 ---------- */
.page-hero {
  padding: calc(var(--space-4xl) + 60px) 0 var(--space-2xl);
  text-align: center;
  position: relative;
}

.page-hero .page-icon {
  font-size: 3rem;
  margin-bottom: var(--space-lg);
  display: inline-block;
  animation: fadeInDown 0.6s ease both;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  animation: fadeInUp 0.6s ease both 0.1s;
}

.page-hero p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  animation: fadeInUp 0.6s ease both 0.2s;
}

.content-section {
  padding: var(--space-2xl) 0;
}

.content-block {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  margin-bottom: var(--space-xl);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-slow);
}

.content-block.visible {
  opacity: 1;
  transform: translateY(0);
}

.content-block h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--accent-gold);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-color);
}

.content-block h3 {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin: var(--space-lg) 0 var(--space-sm);
  font-weight: 500;
}

.content-block p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.content-block ul {
  margin: var(--space-md) 0;
  padding-left: var(--space-lg);
}

.content-block li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  position: relative;
  padding-left: var(--space-md);
  margin-bottom: var(--space-xs);
}

.content-block li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent-gold);
  font-weight: 700;
}

/* 对比表格 */
.compare-table-wrapper {
  width: 100%;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: 0.9rem;
}

.compare-table th,
.compare-table td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.compare-table th {
  color: var(--accent-gold);
  font-weight: 500;
  background: rgba(212, 167, 69, 0.05);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.compare-table td {
  color: var(--text-secondary);
}

.compare-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* 提示框 */
.tip-box {
  background: rgba(212, 167, 69, 0.06);
  border-left: 3px solid var(--accent-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: var(--space-lg);
  margin: var(--space-lg) 0;
}

.tip-box.warning {
  background: rgba(239, 68, 68, 0.06);
  border-left-color: var(--accent-red);
}

.tip-box.info {
  background: rgba(59, 130, 246, 0.06);
  border-left-color: var(--accent-blue);
}

.tip-box .tip-title {
  font-weight: 500;
  color: var(--accent-gold);
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
}

.tip-box.warning .tip-title {
  color: var(--accent-red);
}

.tip-box.info .tip-title {
  color: var(--accent-blue);
}

.tip-box p {
  margin-bottom: 0;
}

/* 标签 */
.tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: 50px;
  margin: 2px;
}

.tag-green {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
}

.tag-red {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
}

.tag-blue {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}

.tag-gold {
  background: rgba(212, 167, 69, 0.15);
  color: var(--accent-gold);
}

.tag-purple {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
}

/* ---------- 术语表 ---------- */
.glossary-search {
  max-width: 500px;
  margin: 0 auto var(--space-2xl);
  position: relative;
}

.glossary-search input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  padding-left: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-body);
  outline: none;
  transition: border-color var(--transition-fast);
}

.glossary-search input:focus {
  border-color: var(--accent-gold);
}

.glossary-search input::placeholder {
  color: var(--text-muted);
}

.glossary-search .search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  color: var(--text-muted);
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-lg);
}

.glossary-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-fast);
}

.glossary-item:hover {
  border-color: rgba(212, 167, 69, 0.2);
}

.glossary-item .term {
  font-weight: 500;
  color: var(--accent-gold);
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.glossary-item .definition {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ---------- 计算器 ---------- */
.calculator-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.calc-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}

.calc-form h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--accent-gold);
  margin-bottom: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.form-group input[type="number"],
.form-group input[type="range"] {
  width: 100%;
  font-family: var(--font-body);
}

.form-group input[type="number"] {
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-group input[type="number"]:focus {
  border-color: var(--accent-gold);
}

.form-group .input-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.calc-btn {
  width: 100%;
  padding: var(--space-md);
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
  color: var(--bg-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.calc-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.calc-result {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}

.calc-result h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--accent-gold);
  margin-bottom: var(--space-xl);
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-color);
}

.result-item:last-of-type {
  border-bottom: none;
}

.result-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.result-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.result-value.big {
  font-size: 1.8rem;
}

/* 图表区域 */
.chart-area {
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
}

.chart-area h4 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 180px;
  padding: 0 var(--space-sm);
}

.bar {
  flex: 1;
  min-width: 4px;
  background: linear-gradient(to top, var(--accent-gold), var(--accent-gold-light));
  border-radius: 3px 3px 0 0;
  transition: height var(--transition-normal);
  position: relative;
}

.bar:hover {
  opacity: 0.8;
}

.bar-label {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-sm);
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ---------- 年度明细 ---------- */
.detail-toggle-wrapper {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.detail-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xl);
  background: transparent;
  border: 1px solid rgba(212, 167, 69, 0.3);
  border-radius: 50px;
  color: var(--accent-gold);
  font-size: 0.85rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.detail-toggle-btn:hover {
  background: rgba(212, 167, 69, 0.08);
  border-color: var(--accent-gold);
  transform: translateY(-1px);
}

.detail-toggle-arrow {
  font-size: 0.7rem;
  transition: transform var(--transition-fast);
}

/* ---------- Glass Buttons ---------- */
.calc-btn,
.detail-toggle-btn,
.btn.btn-primary,
.btn.btn-outline {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 168px;
  padding: 0.95rem 1.7rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.05)),
    linear-gradient(115deg, rgba(255, 255, 255, 0) 34%, rgba(255, 255, 255, 0.34) 50%, rgba(255, 255, 255, 0) 66%);
  background-color: rgba(20, 31, 58, 0.56);
  background-size: 100% 100%, 220% 100%;
  background-position: 0 0, 135% 0;
  color: #f8fafc;
  font-size: 0.98rem;
  font-weight: 600;
  font-family: var(--font-body);
  letter-spacing: 0.02em;
  cursor: pointer;
  overflow: hidden;
  white-space: nowrap;
  text-decoration: none;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow:
    0 18px 40px rgba(2, 6, 23, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.24),
    inset 0 -1px 0 rgba(255, 255, 255, 0.06);
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-position 0.55s ease,
    background-color var(--transition-fast);
}

.calc-btn,
.btn.btn-primary {
  width: 100%;
}

.detail-toggle-btn,
.btn.btn-outline {
  min-width: 0;
  padding: 0.72rem 1.2rem;
  font-size: 0.88rem;
  color: var(--accent-gold);
}

.calc-btn:hover,
.detail-toggle-btn:hover,
.btn.btn-primary:hover,
.btn.btn-outline:hover {
  transform: translateY(-3px) scale(1.01);
  border-color: rgba(212, 167, 69, 0.42);
  background-position: 0 0, -15% 0;
  background-color: rgba(24, 38, 70, 0.68);
  box-shadow:
    0 24px 50px rgba(2, 6, 23, 0.46),
    0 0 0 1px rgba(212, 167, 69, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.calc-btn:active,
.detail-toggle-btn:active,
.btn.btn-primary:active,
.btn.btn-outline:active {
  transform: translateY(0) scale(0.99);
}

.calc-btn:focus-visible,
.detail-toggle-btn:focus-visible,
.btn.btn-primary:focus-visible,
.btn.btn-outline:focus-visible {
  outline: none;
  border-color: rgba(212, 167, 69, 0.46);
  box-shadow:
    0 0 0 3px rgba(212, 167, 69, 0.18),
    0 20px 45px rgba(2, 6, 23, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.26);
}

.calc-btn .detail-toggle-text,
.detail-toggle-btn .detail-toggle-text,
.detail-toggle-btn .detail-toggle-arrow {
  position: relative;
  z-index: 1;
}

.yearly-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.3s ease;
  opacity: 0;
}

.yearly-detail.open {
  max-height: 3000px;
  opacity: 1;
  margin-top: var(--space-lg);
}

.detail-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.detail-table th {
  padding: var(--space-sm) var(--space-md);
  text-align: right;
  color: var(--accent-gold);
  font-weight: 500;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(212, 167, 69, 0.06);
  border-bottom: 2px solid rgba(212, 167, 69, 0.15);
  white-space: nowrap;
}

.detail-table th:first-child {
  text-align: left;
}

.detail-table td {
  padding: var(--space-sm) var(--space-md);
  text-align: right;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.detail-table td:first-child {
  text-align: left;
}

.detail-table tbody tr {
  transition: background var(--transition-fast);
  animation: fadeInUp 0.3s ease both;
}

.detail-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.015);
}

.detail-table tbody tr:hover {
  background: rgba(212, 167, 69, 0.04);
}

.detail-table .interest-cell {
  color: var(--accent-green);
  font-weight: 500;
}

.detail-table .end-balance-cell {
  color: var(--accent-gold);
  font-weight: 600;
}

.detail-table .total-row {
  border-top: 2px solid rgba(212, 167, 69, 0.2);
  background: rgba(212, 167, 69, 0.04);
}

.detail-table .total-row td {
  font-weight: 600;
  color: var(--text-primary);
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: none;
}

.detail-table .total-row .interest-cell {
  color: var(--accent-green);
}

.detail-table .total-row .end-balance-cell {
  color: var(--accent-gold);
  font-size: 1rem;
}

/* ---------- 误区卡片 ---------- */
.mistake-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  margin-bottom: var(--space-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-slow);
}

.mistake-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.mistake-wrong,
.mistake-right {
  padding: var(--space-lg);
  border-radius: var(--radius-md);
}

.mistake-wrong {
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.15);
}

.mistake-right {
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.15);
}

.mistake-label {
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.mistake-wrong .mistake-label {
  color: var(--accent-red);
}

.mistake-right .mistake-label {
  color: var(--accent-green);
}

.mistake-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: var(--space-md);
  grid-column: 1 / -1;
}

.mistake-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ---------- 导航下拉菜单 ---------- */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-family: var(--font-body);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.nav-dropdown-btn:hover,
.nav-dropdown-btn.active {
  color: var(--accent-gold);
  background: rgba(212, 167, 69, 0.1);
}

.dropdown-arrow {
  font-size: 0.7rem;
  transition: transform var(--transition-fast);
}

.nav-dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 200px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: all var(--transition-fast);
  z-index: 1100;
}

.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-dropdown-menu a:hover {
  color: var(--accent-gold);
  background: rgba(212, 167, 69, 0.08);
}

/* ---------- 动画关键帧 ---------- */
.member-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: var(--space-xl);
  align-items: start;
}

.member-stack {
  display: grid;
  gap: var(--space-xl);
}

.wechat-card {
  background: linear-gradient(180deg, rgba(21, 29, 48, 0.98), rgba(17, 24, 39, 0.98));
}

.pill-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  margin-bottom: var(--space-md);
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-green);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.wechat-qr-frame {
  margin: var(--space-lg) 0;
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.wechat-qr-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-md);
  background: #ffffff;
}

.member-list,
.step-list {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding-left: 0;
  list-style: none;
}

.member-list li,
.step-list li {
  position: relative;
  padding-left: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.member-list li::before,
.step-list li::before {
  content: '';
  position: absolute;
  top: 0.75rem;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-gold);
  box-shadow: 0 0 12px rgba(212, 167, 69, 0.4);
}

.contact-card {
  display: grid;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
}

.contact-card strong {
  color: var(--text-primary);
  font-size: 1rem;
}

.contact-card span {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.member-emphasis {
  margin-top: var(--space-md);
  color: var(--text-primary);
}

.member-note {
  margin-top: var(--space-lg);
  font-size: 0.82rem;
  color: var(--text-muted);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {

  0%,
  100% {
    background-position: 0% center;
  }

  50% {
    background-position: 200% center;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .member-layout {
    grid-template-columns: 1fr;
  }

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

  .calc-btn,
  .btn.btn-primary {
    width: 100%;
  }

  .calculator-wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px var(--space-lg) var(--space-lg);
    gap: var(--space-xs);
    transition: right var(--transition-normal);
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.95rem;
  }

  /* 移动端下拉菜单 */
  .nav-dropdown {
    width: 100%;
  }

  .nav-dropdown-btn {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.95rem;
    justify-content: space-between;
  }

  .nav-dropdown-menu {
    position: static;
    transform: none;
    min-width: auto;
    box-shadow: none;
    border: none;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
    padding: 0 0 0 var(--space-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), opacity var(--transition-fast), padding var(--transition-fast);
    opacity: 0;
    visibility: hidden;
  }

  .nav-dropdown.open .nav-dropdown-menu {
    max-height: 500px;
    opacity: 1;
    visibility: visible;
    padding: var(--space-xs) 0 var(--space-xs) var(--space-md);
    transform: none;
  }

  .nav-dropdown-menu a {
    font-size: 0.85rem;
    padding: var(--space-xs) var(--space-md);
  }

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

  .hero h1 {
    font-size: 2rem;
  }

  .hero-note {
    padding: 0 var(--space-md);
  }

  .calc-btn,
  .detail-toggle-btn,
  .btn.btn-primary,
  .btn.btn-outline {
    width: 100%;
    min-width: 0;
  }

  .detail-toggle-btn,
  .btn.btn-outline {
    width: auto;
  }

  .mistake-card {
    grid-template-columns: 1fr;
  }

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

  .compare-table-wrapper {
    overflow-x: visible;
  }

  .compare-table {
    display: block;
    margin: var(--space-md) 0;
  }

  .compare-table thead {
    display: none;
  }

  .compare-table tbody {
    display: grid;
    gap: var(--space-md);
  }

  .compare-table tr {
    display: block;
    padding: var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.18);
  }

  .compare-table td {
    display: grid;
    grid-template-columns: minmax(5.5rem, 6.5rem) minmax(0, 1fr);
    gap: var(--space-sm);
    align-items: start;
    width: 100%;
    padding: var(--space-sm) 0;
    white-space: normal;
    word-break: break-word;
    background: transparent;
  }

  .compare-table td::before {
    content: attr(data-label);
    color: var(--accent-gold);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.03em;
  }

  .compare-table td:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .compare-table tr:hover td {
    background: transparent;
  }
}

/* ======================================
   微信进群 CTA 组件（全站复用）
   ====================================== */

.wechat-cta {
  background: linear-gradient(135deg, rgba(212, 167, 69, 0.07) 0%, rgba(59, 130, 246, 0.05) 100%);
  border: 1px solid rgba(212, 167, 69, 0.22);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  margin: var(--space-3xl) 0 var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

/* 背景光晕装饰 */
.wechat-cta::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(212, 167, 69, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.wechat-cta-qr {
  flex-shrink: 0;
  width: 110px;
  height: 110px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid rgba(212, 167, 69, 0.3);
  box-shadow: 0 0 20px rgba(212, 167, 69, 0.12);
}

.wechat-cta-qr img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.wechat-cta-body {
  flex: 1;
  min-width: 0;
}

.wechat-cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(212, 167, 69, 0.12);
  border: 1px solid rgba(212, 167, 69, 0.25);
  color: var(--accent-gold);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 50px;
  margin-bottom: var(--space-sm);
  letter-spacing: 0.3px;
}

.wechat-cta-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.wechat-cta-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-md);
}

.wechat-cta-hint {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.wechat-cta-hint::before {
  content: '💬';
  font-size: 0.85rem;
}

/* 响应式：移动端纵向堆叠 */
@media (max-width: 600px) {
  .wechat-cta {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-lg);
    padding: var(--space-xl) var(--space-lg);
  }

  .wechat-cta-hint {
    justify-content: center;
  }
}