/* ==========================================================================
   69云 - 温暖马卡龙棉花糖设计系统 (Pastel Cotton Candy Design System)
   Pure Vanilla CSS - 零外部依赖，极速秒开
   ========================================================================== */

:root {
  /* 基础色板 */
  --bg-cream: #FFF8F3;
  --bg-peach-soft: #FFEDE0;
  --text-dark: #3D2C2C;
  --text-muted: #8B7571;
  --border-subtle: #F0DCC9;
  --white: #FFFFFF;

  /* 马卡龙柔和色调 */
  --pastel-peach: #FFB088;
  --pastel-peach-deep: #FF8C5A;
  --pastel-mint: #88D8B0;
  --pastel-mint-deep: #52B788;
  --pastel-lavender: #C8B6FF;
  --pastel-sun: #FFD56B;
  --pastel-pink: #FF9EB5;

  /* 阴影规范 */
  --shadow-default: 0 8px 24px rgba(255, 140, 90, 0.12);
  --shadow-elevated: 0 24px 48px rgba(255, 140, 90, 0.18);
  --shadow-hover: 0 16px 32px rgba(255, 140, 90, 0.15);

  /* 圆角规范 */
  --radius-card: 24px;
  --radius-small: 16px;
  --radius-pill: 999px;

  /* 字体族 */
  --font-heading: 'Quicksand', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* 全局重置与平滑滚动 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-cream);
  color: var(--text-dark);
  line-height: 1.68;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 装饰背景模糊光斑 (Fixed Blurred Blobs) */
.ambient-blobs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  will-change: transform;
}

.blob-peach {
  top: -60px;
  right: -60px;
  width: 360px;
  height: 360px;
  background: var(--pastel-peach);
}

.blob-mint {
  bottom: 10%;
  left: -80px;
  width: 320px;
  height: 320px;
  background: var(--pastel-mint);
}

.blob-lavender {
  top: 45%;
  right: 8%;
  width: 280px;
  height: 280px;
  background: var(--pastel-lavender);
}

/* 通用容器与页面层级 */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* 渐变文字工具类 */
.gradient-text-cloud {
  background: linear-gradient(135deg, var(--pastel-peach-deep) 0%, var(--pastel-pink) 50%, var(--pastel-lavender) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-text-mint {
  background: linear-gradient(135deg, var(--pastel-peach-deep) 0%, var(--pastel-mint-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ==========================================================================
   1. 顶部粘性透明导航条 (Sticky Translucent Header)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background-color: rgba(255, 248, 243, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  padding: 16px 0;
  transition: all 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-badge {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--pastel-peach) 0%, var(--pastel-pink) 100%);
  transform: rotate(-6deg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 800;
  font-size: 1.3rem;
  box-shadow: 0 4px 12px rgba(255, 140, 90, 0.25);
  transition: transform 0.3s ease;
}

.brand-logo:hover .logo-badge {
  transform: rotate(0deg) scale(1.05);
}

.brand-wordmark {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.brand-wordmark .cloud-char {
  color: var(--pastel-peach-deep);
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-link {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 600;
  font-size: 1rem;
  transition: color 0.25s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--pastel-peach-deep);
}

.nav-link.active {
  color: var(--pastel-peach-deep);
}

.nav-link.special-badge {
  color: #E25B2D;
  background: rgba(255, 140, 90, 0.12);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-dark-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background-color: var(--text-dark);
  color: var(--white);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: var(--radius-pill);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 4px 16px rgba(61, 44, 44, 0.18);
}

.btn-dark-pill:hover {
  transform: rotate(-2deg) scale(1.04);
  box-shadow: 0 6px 20px rgba(61, 44, 44, 0.25);
}

/* ==========================================================================
   2. 主视觉区 (Hero Section)
   ========================================================================== */
.hero-section {
  padding: 72px 0 56px 0;
  text-align: center;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 22px;
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--pastel-peach-deep);
  box-shadow: var(--shadow-default);
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-dark);
  max-width: 860px;
  margin: 0 auto 20px auto;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.22rem);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 36px auto;
  font-weight: 500;
}

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

.btn-peach-deep {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 36px;
  background-color: var(--pastel-peach-deep);
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 28px rgba(255, 140, 90, 0.35);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  border: 2px solid transparent;
}

.btn-peach-deep:hover {
  transform: rotate(-1deg) scale(1.04);
  box-shadow: 0 14px 34px rgba(255, 140, 90, 0.45);
}

.btn-white-border {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 32px;
  background-color: var(--white);
  color: var(--text-dark);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-pill);
  border: 2px solid var(--border-subtle);
  box-shadow: var(--shadow-default);
  transition: all 0.25s ease;
}

.btn-white-border:hover {
  border-color: var(--pastel-peach);
  color: var(--pastel-peach-deep);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* ==========================================================================
   3. 统计数字四列 (Stats Section)
   ========================================================================== */
.stats-section {
  padding: 30px 0 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow-default);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* ==========================================================================
   4. 产品核心优势 3×2 网格 (Feature Grid)
   ========================================================================== */
.section-wrapper {
  padding: 80px 0;
}

.section-wrapper.soft-peach-bg {
  background-color: var(--bg-peach-soft);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header-center {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px auto;
}

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  background-color: var(--white);
  color: var(--pastel-peach-deep);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 36px 30px;
  box-shadow: var(--shadow-default);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevated);
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 22px;
}

/* 轮替色彩图标背景 (Col 1 Peach, Col 2 Mint, Col 3 Lavender) */
.features-grid .feature-card:nth-child(3n + 1) .feature-icon-box {
  background: linear-gradient(135deg, #FFE5D8 0%, var(--pastel-peach) 100%);
}

.features-grid .feature-card:nth-child(3n + 2) .feature-icon-box {
  background: linear-gradient(135deg, #DDF8ED 0%, var(--pastel-mint) 100%);
}

.features-grid .feature-card:nth-child(3n + 3) .feature-icon-box {
  background: linear-gradient(135deg, #EBE5FF 0%, var(--pastel-lavender) 100%);
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.feature-text {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   5. 流媒体与海外 AI 深度支持图卡 (Streaming & AI Support Cards)
   ========================================================================== */
.support-dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 20px;
}

.support-showcase-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  box-shadow: var(--shadow-default);
}

.showcase-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.showcase-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background-color: var(--bg-peach-soft);
}

.showcase-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
}

.showcase-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.pill-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background-color: var(--bg-cream);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
}

.pill-item.active-tag {
  background: rgba(136, 216, 176, 0.22);
  border-color: var(--pastel-mint-deep);
  color: #1F6B48;
}

/* ==========================================================================
   6. 绿色大号承诺高亮卡片 (Mint Highlight Card)
   ========================================================================== */
.highlight-banner-card {
  background: linear-gradient(135deg, var(--pastel-mint) 0%, var(--pastel-mint-deep) 100%);
  border-radius: var(--radius-card);
  padding: 48px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(82, 183, 136, 0.25);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  color: var(--white);
  margin: 40px 0;
}

.cloud-giant-deco {
  position: absolute;
  right: -20px;
  bottom: -40px;
  font-size: 15rem;
  line-height: 1;
  opacity: 0.15;
  pointer-events: none;
  user-select: none;
}

.highlight-left {
  flex: 1.2;
  position: relative;
  z-index: 2;
}

.highlight-left h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--white);
}

.highlight-left p {
  font-size: 1.05rem;
  opacity: 0.95;
  margin-bottom: 24px;
  max-width: 480px;
  line-height: 1.6;
}

.highlight-right {
  flex: 1;
  position: relative;
  z-index: 2;
}

.checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.02rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.16);
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(6px);
}

.check-badge {
  width: 24px;
  height: 24px;
  background-color: var(--white);
  color: var(--pastel-mint-deep);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
}

/* ==========================================================================
   7. 价格方案对比表 (Pricing Table)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 38px 30px;
  box-shadow: var(--shadow-default);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-elevated);
}

.pricing-card.featured-plan {
  border: 2px solid var(--pastel-peach-deep);
  box-shadow: 0 16px 36px rgba(255, 140, 90, 0.22);
  transform: scale(1.02);
}

.pricing-card.featured-plan:hover {
  transform: scale(1.02) translateY(-8px);
}

.plan-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--pastel-peach-deep) 0%, var(--pastel-pink) 100%);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 800;
  padding: 5px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 12px rgba(255, 140, 90, 0.3);
  letter-spacing: 0.5px;
}

.plan-header {
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-price-box {
  margin: 16px 0;
}

.currency-sym {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  vertical-align: top;
}

.price-number {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1;
}

.price-unit {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 600;
}

.plan-features-list {
  list-style: none;
  margin-bottom: 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan-features-list li {
  font-size: 0.92rem;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.plan-features-list li .bullet-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--pastel-mint-deep);
  flex-shrink: 0;
}

.btn-plan-cta {
  width: 100%;
  padding: 14px 20px;
  text-align: center;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
  display: block;
}

.pricing-card .btn-plan-cta {
  background-color: var(--bg-peach-soft);
  color: var(--pastel-peach-deep);
  border: 1px solid var(--border-subtle);
}

.pricing-card .btn-plan-cta:hover {
  background-color: var(--pastel-peach-deep);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(255, 140, 90, 0.3);
}

.pricing-card.featured-plan .btn-plan-cta {
  background-color: var(--pastel-peach-deep);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(255, 140, 90, 0.3);
}

.pricing-card.featured-plan .btn-plan-cta:hover {
  background-color: #E25B2D;
  transform: translateY(-2px);
}

/* ==========================================================================
   8. 用户评价 (Testimonials)
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-default);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testi-stars {
  color: #FFAA00;
  font-size: 1.1rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.testi-comment {
  font-size: 0.95rem;
  color: var(--text-dark);
  line-height: 1.65;
  margin-bottom: 20px;
}

.testi-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px dashed var(--border-subtle);
  padding-top: 14px;
}

.avatar-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--pastel-lavender) 0%, var(--pastel-peach) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--white);
  font-weight: 700;
}

.author-info h4 {
  font-size: 0.95rem;
  color: var(--text-dark);
  font-weight: 700;
}

.author-info span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   9. 常见问题解答 FAQ
   ========================================================================== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-small);
  box-shadow: var(--shadow-default);
  overflow: hidden;
  transition: all 0.25s ease;
}

.faq-item:hover {
  border-color: var(--pastel-peach);
}

.faq-question {
  padding: 20px 24px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-answer {
  padding: 0 24px 20px 24px;
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   10. 页脚 (Footer) - 纯净四栏标题外链新页面
   ========================================================================== */
.site-footer {
  background-color: var(--bg-peach-soft);
  border-top: 1px solid var(--border-subtle);
  padding: 56px 0 36px 0;
  position: relative;
  z-index: 10;
}

.footer-nav-four {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
  margin-bottom: 40px;
}

.footer-col-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-small);
  padding: 20px 16px;
  box-shadow: var(--shadow-default);
  transition: all 0.25s ease;
  display: block;
  text-decoration: none;
}

.footer-col-card:hover {
  transform: translateY(-4px);
  border-color: var(--pastel-peach-deep);
  box-shadow: var(--shadow-hover);
}

.footer-col-title {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.footer-col-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
}

.footer-bottom {
  text-align: center;
  border-top: 1px dashed var(--border-subtle);
  padding-top: 24px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ==========================================================================
   资讯/文章页专用样式 (Articles & Inner Pages)
   ========================================================================== */
.article-hub-header {
  padding: 50px 0 30px 0;
  text-align: center;
}

.article-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-bottom: 60px;
}

.article-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow-default);
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-elevated);
  border-color: var(--pastel-peach);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.article-badge {
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 700;
  background-color: var(--bg-peach-soft);
  color: var(--pastel-peach-deep);
}

.article-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.4;
  margin-bottom: 14px;
}

.article-summary {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.68;
  margin-bottom: 18px;
  flex: 1;
}

.article-content-body {
  background: var(--bg-cream);
  padding: 16px 20px;
  border-radius: var(--radius-small);
  border: 1px solid var(--border-subtle);
  font-size: 0.92rem;
  color: var(--text-dark);
  line-height: 1.7;
}

.inline-link {
  color: var(--pastel-peach-deep);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.inline-link:hover {
  color: #D44B1D;
}

/* 独立内容页卡片容器 (About/Terms/Privacy/Sitemap) */
.page-content-box {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 48px;
  box-shadow: var(--shadow-default);
  margin: 40px auto 60px auto;
  max-width: 920px;
}

.page-content-box h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.page-content-box h2 {
  font-size: 1.4rem;
  margin: 28px 0 12px 0;
  color: var(--pastel-peach-deep);
}

.page-content-box p {
  margin-bottom: 16px;
  font-size: 1rem;
  color: var(--text-dark);
  line-height: 1.75;
}

.page-content-box ul {
  margin: 12px 0 20px 24px;
}

.page-content-box li {
  margin-bottom: 8px;
  color: var(--text-muted);
}

/* ==========================================================================
   响应式断点与移动端适配 (Responsive Collapse at 768px)
   ========================================================================== */
@media screen and (max-width: 992px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .pricing-card.featured-plan {
    transform: none;
  }
  .pricing-card.featured-plan:hover {
    transform: translateY(-6px);
  }
  .highlight-banner-card {
    flex-direction: column;
    text-align: center;
    padding: 36px 24px;
  }
  .highlight-left p {
    margin-left: auto;
    margin-right: auto;
  }
  .checklist {
    align-items: center;
  }
}

@media screen and (max-width: 768px) {
  .site-header {
    padding: 12px 0;
  }
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
  }
  .nav-menu {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 16px;
    padding-top: 10px;
    border-top: 1px solid var(--border-subtle);
  }
  .nav-link {
    font-size: 0.92rem;
  }
  .hero-section {
    padding: 44px 0 36px 0;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions a {
    width: 100%;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .support-dual-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .footer-nav-four {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .article-card-grid {
    grid-template-columns: 1fr;
  }
  .page-content-box {
    padding: 24px 18px;
  }
}

@media screen and (max-width: 480px) {
  .footer-nav-four {
    grid-template-columns: 1fr;
  }
}