/* ==========================================================================
   龙猫云 Chinchilla Cloud - 核心样式表 (style.css)
   视觉规范：Soft Silver Chinchilla
   银灰龙猫、奶白背景、薰衣草紫、浅紫面板、薄荷辅助、精细边框
   ========================================================================== */

:root {
  /* 调色板 (严格遵循规范) */
  --bg-primary: #FAF9F6;           /* 页面底色：奶白 */
  --bg-surface: #FFFFFF;           /* 卡片与表单表面色 */
  --text-main: #282832;            /* 主文字 */
  --text-muted: #656572;           /* 辅助文字 */
  --chinchilla-silver: #A9ADB8;    /* 龙猫银灰 */
  --primary-lavender: #8876D9;     /* 主色薰衣草 */
  --primary-lavender-hover: #7663CC;
  --primary-lavender-subtle: #9D8DE0;
  --panel-light-purple: #EEEAFA;   /* 浅紫面板 */
  --mint-accent: #CDE9DD;          /* 薄荷辅助 */
  --mint-accent-text: #216B4D;     /* 薄荷对比文字 */
  --border-color: #DFDEE6;         /* 边框 */
  --border-color-focus: #8876D9;

  /* 阴影体系 (克制、柔和) */
  --shadow-sm: 0 2px 6px rgba(40, 40, 50, 0.03);
  --shadow-md: 0 8px 24px rgba(40, 40, 50, 0.05);
  --shadow-lg: 0 16px 36px rgba(136, 118, 217, 0.08);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* 布局与间距 */
  --container-max: 1200px;
  --container-padding: 20px;
  --header-height: 72px;

  /* 字体族 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  max-width: 100%;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
}

/* 无障碍焦点样式 */
:focus-visible {
  outline: 2px solid var(--primary-lavender);
  outline-offset: 3px;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

/* 容器与版心 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section-wrapper {
  padding-top: 64px;
  padding-bottom: 64px;
}

@media (min-width: 768px) {
  .section-wrapper {
    padding-top: 88px;
    padding-bottom: 88px;
  }
}

/* 标题体系 */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  background-color: var(--panel-light-purple);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--primary-lavender);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.35rem;
  }
}

.section-description {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.65;
}

@media (min-width: 768px) {
  .section-description {
    font-size: 1.1rem;
  }
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-lavender);
  color: #FFFFFF;
  border-color: var(--primary-lavender);
  box-shadow: 0 4px 14px rgba(136, 118, 217, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-lavender-hover);
  border-color: var(--primary-lavender-hover);
  box-shadow: 0 6px 20px rgba(136, 118, 217, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--panel-light-purple);
  border-color: var(--primary-lavender);
  color: var(--primary-lavender);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 30px;
  font-size: 1.05rem;
}

/* ==========================================================================
   Header 导航栏
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: rgba(250, 249, 246, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.header-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header-logo-img {
  height: 40px;
  width: auto;
}

/* 桌面导航 */
.nav-desktop {
  display: none;
  align-items: center;
  gap: 22px;
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--primary-lavender);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--primary-lavender);
  transition: width 0.2s ease;
  border-radius: 2px;
}

.nav-link:hover::after {
  width: 100%;
}

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

/* 汉堡菜单按钮 */
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  cursor: pointer;
  color: var(--text-main);
  transition: background-color 0.2s ease;
}

.mobile-menu-btn:hover {
  background-color: var(--panel-light-purple);
}

@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
}

.hamburger-icon {
  width: 22px;
  height: 2px;
  background-color: currentColor;
  position: relative;
  transition: background-color 0.2s ease;
}

.hamburger-icon::before,
.hamburger-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background-color: currentColor;
  transition: transform 0.25s ease;
}

.hamburger-icon::before {
  top: -7px;
}

.hamburger-icon::after {
  top: 7px;
}

/* 汉堡按钮展开态 */
.mobile-menu-btn[aria-expanded="true"] .hamburger-icon {
  background-color: transparent;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger-icon::before {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn[aria-expanded="true"] .hamburger-icon::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端菜单抽屉 */
.mobile-nav-drawer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(40, 40, 50, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  display: flex;
  flex-direction: column;
}

.mobile-nav-drawer.is-open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-content {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
  transform: translateY(-20px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav-drawer.is-open .mobile-nav-content {
  transform: translateY(0);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.mobile-nav-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  display: block;
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible {
  background-color: var(--panel-light-purple);
  color: var(--primary-lavender);
}

.mobile-nav-cta {
  width: 100%;
}

/* ==========================================================================
   Hero 首屏
   ========================================================================== */
.hero-section {
  padding-top: 36px;
  padding-bottom: 60px;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero-section {
    padding-top: 56px;
    padding-bottom: 90px;
  }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.95fr;
    gap: 48px;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--panel-light-purple);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-lavender);
  margin-bottom: 20px;
}

.hero-pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--primary-lavender);
}

.hero-title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  color: var(--text-main);
  margin-bottom: 18px;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3.1rem;
  }
}

.hero-sub {
  display: block;
  font-weight: 600;
  color: var(--primary-lavender);
  margin-top: 6px;
}

.hero-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 30px;
  max-width: 580px;
}

@media (min-width: 768px) {
  .hero-desc {
    font-size: 1.15rem;
  }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
  width: 100%;
}

.hero-actions .btn {
  flex: 1 1 160px;
}

@media (min-width: 480px) {
  .hero-actions .btn {
    flex: 0 0 auto;
  }
}

.hero-trust-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  width: 100%;
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}

.trust-icon {
  color: var(--primary-lavender);
  display: flex;
  align-items: center;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-svg-card {
  width: 100%;
  max-width: 560px;
  background: radial-gradient(circle at center, #EEEAFA 0%, #FAF9F6 70%);
  border-radius: var(--radius-xl);
  padding: 16px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   核心优势 (不采用千篇一律的 Bento，采用长条与图文节奏区)
   ========================================================================== */
.features-section {
  background-color: #FAF9F6;
  position: relative;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.feature-strip {
  display: grid;
  grid-template-columns: 1fr;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  align-items: center;
  gap: 24px;
}

.feature-strip:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-lavender);
}

@media (min-width: 768px) {
  .feature-strip {
    grid-template-columns: 88px 1fr;
    padding: 32px 40px;
    gap: 32px;
  }
}

.feature-icon-wrapper {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  background-color: var(--panel-light-purple);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary-lavender);
}

.feature-strip:nth-child(2) .feature-icon-wrapper {
  background-color: #EBF8F2;
  color: var(--mint-accent-text);
}

.feature-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

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

/* ==========================================================================
   全球节点与网络能力 (横向地区目录与轻量网络轨道图组合，明确标注网络示意)
   ========================================================================== */
.network-section {
  background-color: #F6F4F0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.network-container-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
  .network-container-card {
    padding: 44px;
  }
}

.network-disclaimer-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background-color: #FFF6E5;
  border: 1px solid #FFE3B3;
  color: #995B00;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.regions-horizontal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 32px;
}

@media (min-width: 640px) {
  .regions-horizontal-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }
}

.region-box {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  text-align: center;
  transition: all 0.25s ease;
}

.region-box:hover {
  border-color: var(--primary-lavender);
  background-color: var(--panel-light-purple);
  transform: translateY(-2px);
}

.region-flag {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.region-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.region-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.region-status-badge {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  background-color: var(--mint-accent);
  color: var(--mint-accent-text);
}

/* 架构与真实说明分栏 */
.network-notes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid var(--border-color);
}

@media (min-width: 768px) {
  .network-notes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.network-note-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.network-note-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.network-note-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   AI 与流媒体场景分区 (两个大型场景分区，非简单 Logo 墙)
   ========================================================================== */
.scenarios-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 1024px) {
  .scenarios-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

.scenario-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  height: 100%;
}

@media (min-width: 768px) {
  .scenario-card {
    padding: 40px 32px;
  }
}

.scenario-card.ai-space {
  border-top: 4px solid var(--primary-lavender);
}

.scenario-card.media-space {
  border-top: 4px solid var(--mint-accent-text);
}

.scenario-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  width: fit-content;
}

.scenario-card.ai-space .scenario-badge {
  background-color: var(--panel-light-purple);
  color: var(--primary-lavender);
}

.scenario-card.media-space .scenario-badge {
  background-color: #EBF8F2;
  color: var(--mint-accent-text);
}

.scenario-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.scenario-intro {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
}

/* 场景工具说明网格 */
.scenario-tools-title {
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-main);
  margin-bottom: 12px;
}

.scenario-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.scenario-chip {
  padding: 6px 14px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 条件与注意事项说明框 */
.scenario-guidance-box {
  margin-top: auto;
  background-color: var(--bg-primary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.scenario-guidance-box strong {
  color: var(--text-main);
}

/* ==========================================================================
   套餐价格比较 (真实/诚实展示，缺少资料明确显示“待补充”)
   ========================================================================== */
.pricing-section {
  background-color: #FAF9F6;
}

.pricing-notice {
  text-align: center;
  margin-bottom: 36px;
}

.pricing-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 36px;
}

@media (min-width: 768px) {
  .pricing-cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.pricing-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* 预留高亮位置 */
.pricing-card.featured {
  border: 2px solid var(--primary-lavender);
  box-shadow: var(--shadow-lg);
}

.pricing-ribbon {
  position: absolute;
  top: -12px;
  right: 20px;
  background-color: var(--primary-lavender);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: var(--radius-full);
}

.pricing-card-header {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.pricing-plan-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.pricing-plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pricing-price-box {
  margin-bottom: 24px;
}

.pricing-price-value {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.pricing-currency {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary-lavender);
}

.pricing-amount {
  font-size: 2.35rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
  letter-spacing: -1px;
}

.pricing-cycle {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 4px;
}

.pricing-badge-save {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background-color: var(--panel-light-purple);
  color: var(--primary-lavender);
}

.pricing-card.featured .pricing-badge-save {
  background-color: #EBF8F2;
  color: var(--mint-accent-text);
}

.pricing-plan-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background-color: var(--panel-light-purple);
  color: var(--primary-lavender);
  margin-bottom: 6px;
}

.pricing-amount-pending {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.pricing-features-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.pricing-check-icon {
  color: var(--primary-lavender);
  flex-shrink: 0;
  margin-top: 3px;
}

.pricing-cta {
  width: 100%;
}

/* 套餐比较移动端横向可滚动表格 */
.pricing-table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  margin-top: 32px;
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
  min-width: 580px;
}

.pricing-table th,
.pricing-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.pricing-table th {
  background-color: var(--panel-light-purple);
  font-weight: 700;
  color: var(--text-main);
}

.pricing-table tr:last-child td {
  border-bottom: none;
}

.pending-tag {
  display: inline-block;
  padding: 2px 8px;
  background-color: #F1EFF8;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.78rem;
}

/* ==========================================================================
   9 篇 SEO 文章导读区 (网络加速与使用指南)
   3×3 桌面，2 列平板，1 列手机。与 Pricing 卡片有显著区别。
   ========================================================================== */
.articles-section {
  background-color: #F6F4F0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
}

.article-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  box-shadow: var(--shadow-sm);
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-lavender);
}

.article-card-media {
  height: 160px;
  background: linear-gradient(135deg, #EEEAFA 0%, #FAF9F6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.article-card-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}

.article-card:hover .article-card-cover-img {
  transform: scale(1.04);
}

.article-card-cover-svg {
  width: 72px;
  height: 72px;
  color: var(--primary-lavender);
  opacity: 0.85;
}

.article-card-body {
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.article-category-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background-color: var(--panel-light-purple);
  color: var(--primary-lavender);
}

.article-reading-time {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.article-card-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

.article-card:hover .article-card-title {
  color: var(--primary-lavender);
}

.article-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.article-read-link {
  font-weight: 600;
  color: var(--primary-lavender);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   用户评价 (严格标注“示例评价，待替换”，不伪造真实评分)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .reviews-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

.review-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.review-notice-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: #8C8C96;
  background-color: #F1EFF8;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  width: fit-content;
}

.review-text {
  font-size: 0.92rem;
  color: var(--text-main);
  line-height: 1.65;
  margin-bottom: 18px;
  font-style: italic;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.review-avatar-placeholder {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-color: var(--panel-light-purple);
  color: var(--primary-lavender);
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.review-author-info h4 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
}

.review-author-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FAQ 折叠问答 (原生 details / summary)
   ========================================================================== */
.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-item[open] {
  border-color: var(--primary-lavender);
  box-shadow: var(--shadow-sm);
}

.faq-summary {
  padding: 18px 22px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  user-select: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--primary-lavender);
  transition: transform 0.25s ease;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 22px 20px 22px;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
  border-top: 1px solid transparent;
}

.faq-item[open] .faq-answer {
  border-top: 1px solid var(--panel-light-purple);
  padding-top: 14px;
}

/* ==========================================================================
   Footer 页脚
   ========================================================================== */
.site-footer {
  background-color: #24242D;
  color: #B5B5C0;
  border-top: 1px solid #363642;
  padding-top: 60px;
  padding-bottom: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
  }
}

.footer-brand-col {
  max-width: 420px;
}

.footer-brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FAF9F6;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-brand-desc {
  font-size: 0.88rem;
  line-height: 1.65;
  color: #A0A0AD;
  margin-bottom: 20px;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #FAF9F6;
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 0.88rem;
  color: #B5B5C0;
  transition: color 0.2s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: #FFFFFF;
}

.footer-ext-note {
  font-size: 0.82rem;
  color: #8C8C98;
  margin-top: 8px;
  line-height: 1.5;
}

.footer-bottom-bar {
  padding-top: 24px;
  border-top: 1px solid #363642;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
  font-size: 0.82rem;
  color: #8C8C98;
}

@media (min-width: 768px) {
  .footer-bottom-bar {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ==========================================================================
   独立文章页面样式 (Article Layout)
   ========================================================================== */
.breadcrumbs-nav {
  padding: 20px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumbs-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb-separator {
  color: var(--chinchilla-silver);
}

.breadcrumb-current {
  color: var(--text-main);
  font-weight: 600;
}

.article-header {
  max-width: 820px;
  margin: 16px auto 36px auto;
}

.article-h1 {
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}

@media (min-width: 768px) {
  .article-h1 {
    font-size: 2.6rem;
  }
}

.article-meta-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.article-main-container {
  max-width: 820px;
  margin: 0 auto;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-main);
  margin-bottom: 48px;
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  letter-spacing: -0.2px;
}

.article-content h3 {
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 28px;
  margin-bottom: 12px;
}

.article-content p {
  margin-bottom: 20px;
  color: #33333E;
}

.article-content ul,
.article-content ol {
  margin-bottom: 22px;
  padding-left: 24px;
}

.article-content ul {
  list-style: disc;
}

.article-content ol {
  list-style: decimal;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  background-color: var(--panel-light-purple);
  border-left: 4px solid var(--primary-lavender);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
  font-size: 0.98rem;
  color: #403D52;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.92rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-content th,
.article-content td {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
}

.article-content th {
  background-color: var(--panel-light-purple);
  font-weight: 700;
  text-align: left;
}

.article-callout-box {
  background-color: #F8F7FC;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin: 28px 0;
}

.article-callout-box h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-lavender);
  margin-bottom: 8px;
}

/* 相关文章推荐区 */
.related-articles-section {
  max-width: 820px;
  margin: 48px auto;
  padding-top: 36px;
  border-top: 1px solid var(--border-color);
}

.related-articles-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 20px;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 640px) {
  .related-articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.related-article-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}

.related-article-card:hover {
  border-color: var(--primary-lavender);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.related-article-card h4 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.related-article-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 页面底部返回首页条 */
.back-home-bar {
  max-width: 820px;
  margin: 32px auto 60px auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   动画与用户偏好 (prefers-reduced-motion)
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}