/* ========================================
   会员订阅与报告下载站 - 主样式表
   暗色高级感 · 卡片化布局 · 移动端优先
   ======================================== */

:root {
  --color-primary: #6c5ce7;
  --color-primary-light: #a29bfe;
  --color-primary-dark: #4a3db8;
  --color-accent: #00cec9;
  --color-accent-light: #81ecec;
  --color-bg: #0a0a1a;
  --color-bg-secondary: #12122a;
  --color-bg-card: #1a1a3e;
  --color-bg-card-hover: #222255;
  --color-text: #e8e8f0;
  --color-text-secondary: #a0a0c0;
  --color-text-muted: #6868a0;
  --color-border: #2a2a5a;
  --color-success: #00b894;
  --color-warning: #fdcb6e;
  --color-danger: #e17055;
  --color-gold: #f9ca24;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(108,92,231,0.3);
  --transition: 0.3s ease;
  --transition-slow: 0.5s ease;
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --max-width: 1200px;
}

/* 重置与基础 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* 头部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,10,26,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.site-logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.nav-main {
  display: none;
}

.nav-main.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm);
  gap: var(--spacing-xs);
}

.nav-main a {
  color: var(--color-text-secondary);
  padding: 0.6rem var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  font-size: 0.95rem;
}

.nav-main a:hover,
.nav-main a.active {
  color: var(--color-text);
  background: var(--color-bg-card);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-bg-card);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.2rem;
}

.btn-search-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-bg-card);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.1rem;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(108,92,231,0.5);
  color: #fff;
}

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-primary);
  color: var(--color-text);
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), #00b894);
  color: #0a0a1a;
  font-weight: 700;
}

.btn-accent:hover {
  transform: translateY(-2px);
  color: #0a0a1a;
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold), #f0932b);
  color: #0a0a1a;
  font-weight: 700;
}

.btn-gold:hover {
  transform: translateY(-2px);
  color: #0a0a1a;
}

/* 首屏英雄区 */
.hero {
  padding: var(--spacing-xl) 0;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(108,92,231,0.08) 0%, transparent 60%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: scale(1) rotate(0deg); }
  100% { transform: scale(1.1) rotate(3deg); }
}

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

.hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-text), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-md);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

/* 区块 */
.section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-header p {
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* 卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition);
}

.card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, rgba(108,92,231,0.2), rgba(0,206,201,0.2));
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

.card-img {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
}

/* 价格卡片 */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.pricing-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  position: relative;
  transition: all var(--transition);
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.pricing-card.featured::before {
  content: "推荐";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  padding: 0.2rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

.pricing-card h3 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary-light);
  margin-bottom: 0.3rem;
}

.pricing-period {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: var(--spacing-md);
}

.pricing-features {
  text-align: left;
  margin-bottom: var(--spacing-md);
}

.pricing-features li {
  padding: 0.4rem 0;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pricing-features li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: 700;
}

/* 报告列表 */
.report-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.report-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all var(--transition);
}

.report-item:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-card-hover);
}

.report-item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(108,92,231,0.3), rgba(0,206,201,0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
}

.report-item-info {
  flex: 1;
}

.report-item-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.report-item-info span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.report-item-badge {
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(108,92,231,0.2);
  color: var(--color-primary-light);
  white-space: nowrap;
}

.report-item-badge.free {
  background: rgba(0,184,148,0.2);
  color: var(--color-success);
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--color-bg-card-hover);
}

.faq-question::after {
  content: "＋";
  font-size: 1.2rem;
  color: var(--color-primary-light);
  transition: transform var(--transition);
}

.faq-item.active .faq-question::after {
  content: "－";
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 var(--spacing-md) var(--spacing-md);
}

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

/* 订阅表单 */
.subscribe-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-width: 500px;
  margin: 0 auto;
}

.form-input {
  width: 100%;
  padding: 0.8rem 1.2rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(108,92,231,0.1);
}

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

/* 面包屑 */
.breadcrumb {
  padding: var(--spacing-sm) 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

.breadcrumb span {
  margin: 0 0.4rem;
}

/* 页脚 */
.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.footer-col a {
  display: block;
  color: var(--color-text-secondary);
  padding: 0.3rem 0;
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-md);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-bottom a {
  color: var(--color-text-secondary);
}

/* 返回顶部 */
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  display: flex;
}

.back-to-top:hover {
  transform: scale(1.1);
  background: var(--color-primary-dark);
}

/* PWA安装提示 */
.pwa-prompt {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-card);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  display: none;
  align-items: center;
  gap: var(--spacing-sm);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  max-width: 90%;
}

.pwa-prompt.visible {
  display: flex;
}

.pwa-prompt p {
  font-size: 0.9rem;
  color: var(--color-text);
}

.pwa-prompt .btn-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1.2rem;
}

/* 搜索提示 */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,10,26,0.95);
  z-index: 2000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
}

.search-overlay.active {
  display: flex;
}

.search-box {
  width: 90%;
  max-width: 600px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
}

.search-box input {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1rem;
  margin-bottom: var(--spacing-sm);
}

.search-box input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.search-results {
  max-height: 50vh;
  overflow-y: auto;
}

.search-result-item {
  padding: 0.8rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}

.search-result-item:hover {
  background: var(--color-bg-card-hover);
}

.search-result-item h4 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.search-result-item p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* 提交成功提示 */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--color-success);
  color: #fff;
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transform: translateX(120%);
  transition: transform var(--transition);
  z-index: 3000;
}

.toast.visible {
  transform: translateX(0);
}

/* 内容页 */
.page-hero {
  padding: var(--spacing-lg) 0;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-hero p {
  color: var(--color-text-secondary);
  max-width: 600px;
}

.page-content {
  padding: var(--spacing-lg) 0;
}

.page-content p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.page-content h2 {
  font-size: 1.4rem;
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.page-content h3 {
  font-size: 1.1rem;
  margin: var(--spacing-md) 0 var(--spacing-sm);
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  background: rgba(108,92,231,0.15);
  color: var(--color-primary-light);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  margin: 0.2rem;
}

/* 时间线 */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-md);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
}

.timeline-item h4 {
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

.timeline-item time {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.timeline-item p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-top: 0.3rem;
}

/* 合规提醒条 */
.compliance-bar {
  background: rgba(225,112,85,0.1);
  border: 1px solid rgba(225,112,85,0.3);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: var(--spacing-md) 0;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.compliance-bar a {
  color: var(--color-danger);
}

/* 相关链接 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin: var(--spacing-md) 0;
}

.related-links a {
  padding: 0.4rem 0.8rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.related-links a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

/* 步骤列表 */
.steps {
  counter-reset: step;
}

.step-item {
  counter-increment: step;
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.step-item::before {
  content: counter(step);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.step-item div h4 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.step-item div p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* 响应式 */
@media (min-width: 768px) {
  .nav-main {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    position: static;
    background: none;
    border: none;
    padding: 0;
    flex-direction: row;
  }

  .btn-menu {
    display: none;
  }

  .hero h1 {
    font-size: 3rem;
  }

  .hero .subtitle {
    font-size: 1.2rem;
  }

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

  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .subscribe-form {
    flex-direction: row;
  }
}

@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .card-grid.cols-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* 404页面 */
.page-404 {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.page-404 h1 {
  font-size: 6rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.page-404 p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* 搜索页 */
.search-page-input {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.search-page-input input {
  flex: 1;
  padding: 0.8rem 1.2rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1rem;
}

.search-page-input input:focus {
  outline: none;
  border-color: var(--color-primary);
}