/* ===================================================================
   秒秒云 (MiaoMiaoCloud) 官方推广落地页核心样式表
   主题风格：烟雨黛蓝 × 月白古风线描 高级东方意境
   主色规范：黛青蓝 #2C3E50、烟雨蓝 #4A6B86、月白 #F1F5F9、古铜金 #C4A77D、云雾灰 #B7C9D9
   特性：原生CSS、无外部框架、无外部字体、秒开极速性能、全响应式支持
   =================================================================== */

:root {
  /* 东方古典主色调 */
  --daiqing: #2C3E50;          /* 黛青蓝：主基调 */
  --yanyu: #4A6B86;            /* 烟雨蓝：次主色 / 交互主色 */
  --yuebai: #F1F5F9;           /* 月白：主文字 / 高亮线描 */
  --gutongjin: #C4A77D;        /* 古铜金：精细点缀 / 尊享标识 */
  --yunwuhui: #B7C9D9;         /* 云雾灰：次级文字 / 柔和线条 */

  /* 系统语义变量映射 */
  --bg-deep: #16202b;          /* 极深黛青底色 */
  --bg-main: #1c2834;          /* 主背景色 */
  --bg-card: rgba(36, 51, 66, 0.88); /* 黛青半透卡片背景 */
  --bg-card-hover: rgba(44, 63, 82, 0.95);
  --bg-header: rgba(22, 32, 43, 0.94);

  --primary: var(--yanyu);
  --primary-hover: #3d5a73;
  --accent: var(--gutongjin);
  --accent-hover: #b5966a;

  --text-main: var(--yuebai);
  --text-muted: var(--yunwuhui);
  --border-color: #314457;
  --border-highlight: var(--gutongjin);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 6px rgba(10, 16, 23, 0.35);
  --shadow-md: 0 8px 24px rgba(10, 16, 23, 0.45);
  --shadow-lg: 0 16px 36px rgba(10, 16, 23, 0.6);
  --container-width: 1200px;
  --header-height: 72px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Serif CJK SC", serif, sans-serif;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.65;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #202d3a 0%, var(--bg-deep) 100%);
}

/* 无障碍跳转入口 */
.skip-link {
  position: absolute;
  top: -60px;
  left: 20px;
  background: var(--yanyu);
  color: var(--yuebai);
  padding: 10px 18px;
  z-index: 9999;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gutongjin);
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 15px;
}

/* 链接与排版 */
a {
  color: #8bb5d9;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}
a:hover {
  color: var(--yuebai);
}
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--gutongjin);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

/* 容器 */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 页眉与导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--bg-header);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
}
.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.site-logo-img {
  height: 38px;
  width: auto;
  max-width: 190px;
  display: block;
  object-fit: contain;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--yunwuhui);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 4px;
  position: relative;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--yuebai);
}
.nav-links a:hover::after, .nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 4px;
  right: 4px;
  height: 2px;
  background: var(--gutongjin);
  border-radius: 2px;
}
.nav-badge {
  background: linear-gradient(135deg, var(--gutongjin) 0%, #a88a5e 100%);
  color: #1a2530;
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 999px;
  margin-left: 4px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 20px;
  background: linear-gradient(135deg, var(--yanyu) 0%, #3a546c 100%);
  color: var(--yuebai);
  border: 1px solid rgba(196, 167, 125, 0.45);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  transition: all 0.25s ease;
}
.header-cta:hover {
  background: linear-gradient(135deg, #567b9c 0%, var(--yanyu) 100%);
  border-color: var(--gutongjin);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(196, 167, 125, 0.25);
}

/* 按钮通用 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 30px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: all 0.25s ease;
}
.btn-primary {
  background: linear-gradient(135deg, #3d5973 0%, var(--daiqing) 100%);
  color: var(--yuebai);
  border: 1px solid rgba(196, 167, 125, 0.6);
  box-shadow: 0 6px 18px rgba(10, 16, 23, 0.45);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #4d6f8f 0%, #34485c 100%);
  border-color: var(--gutongjin);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(196, 167, 125, 0.35);
}
.btn-secondary {
  background: rgba(36, 51, 66, 0.85);
  color: var(--yuebai);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background: rgba(44, 63, 82, 0.95);
  border-color: var(--gutongjin);
  color: #ffffff;
}

/* 模块通用标题 */
.section {
  padding: 85px 0;
  scroll-margin-top: calc(var(--header-height) + 20px);
  position: relative;
}
.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 50px auto;
}
.section-tag {
  display: inline-block;
  padding: 4px 16px;
  background: rgba(74, 107, 134, 0.22);
  border: 1px solid rgba(196, 167, 125, 0.4);
  color: var(--gutongjin);
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--yuebai);
  line-height: 1.35;
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--yunwuhui);
}

/* ===================================================================
   Hero 区域：烟雨黛蓝底色 × 月白古风线描 × 云烟缓动
   =================================================================== */
.hero-section {
  position: relative;
  overflow: hidden;
  padding: 105px 0 85px 0;
  text-align: center;
  background-color: #18232e;
  /* 桌面高清背景：cover 居中，保持比例避免拉伸 */
  background-image: url('public/assets/hero-desktop.webp');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}

/* 柔和遮罩：保护前景 HTML 文字高对比度与清晰度 */
.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 25%, rgba(22, 32, 43, 0.52) 0%, rgba(16, 24, 33, 0.82) 100%);
  pointer-events: none;
  z-index: 1;
}

/* 云烟缓动与月光呼吸装饰层 */
.hero-atmosphere {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  overflow: hidden;
}

/* 柔和月光呼吸效果 */
.moonlight-breathe {
  position: absolute;
  top: 5%;
  left: 50%;
  transform: translateX(-50%);
  width: 750px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(241, 245, 249, 0.16) 0%, rgba(74, 107, 134, 0.08) 50%, transparent 75%);
  animation: moonPulse 8s ease-in-out infinite alternate;
  filter: blur(28px);
}

@keyframes moonPulse {
  0% {
    opacity: 0.35;
    transform: translateX(-50%) scale(0.96);
  }
  100% {
    opacity: 0.65;
    transform: translateX(-50%) scale(1.04);
  }
}

/* 缓慢云烟流动 (Mist Flow) */
.mist-flow {
  position: absolute;
  width: 200%;
  height: 100%;
  top: 0;
  left: -50%;
  background: radial-gradient(ellipse at 30% 60%, rgba(183, 201, 217, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 40%, rgba(241, 245, 249, 0.09) 0%, transparent 55%);
  filter: blur(35px);
}
.mist-flow-1 {
  animation: mistMove1 14s ease-in-out infinite alternate;
}
.mist-flow-2 {
  animation: mistMove2 18s ease-in-out infinite alternate;
  opacity: 0.7;
}

@keyframes mistMove1 {
  0% {
    transform: translateX(-40px) translateY(0);
  }
  100% {
    transform: translateX(40px) translateY(-12px);
  }
}

@keyframes mistMove2 {
  0% {
    transform: translateX(35px) translateY(-8px);
  }
  100% {
    transform: translateX(-35px) translateY(8px);
  }
}

/* 祥云轻移装饰线条 (Cloud Drift SVG 描边层) */
.clouds-drift {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 15% 70%, rgba(196, 167, 125, 0.06) 0%, transparent 40%),
                    radial-gradient(circle at 85% 65%, rgba(196, 167, 125, 0.06) 0%, transparent 40%);
  animation: cloudSway 10s ease-in-out infinite alternate;
}

@keyframes cloudSway {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(-10px);
  }
}

/* Hero 文字与交互内容容器 */
.hero-content {
  position: relative;
  z-index: 3;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(36, 51, 66, 0.85);
  border: 1px solid rgba(196, 167, 125, 0.4);
  border-radius: 999px;
  font-size: 0.86rem;
  color: var(--yunwuhui);
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--gutongjin);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--gutongjin);
}
.hero-title {
  font-size: 2.85rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  max-width: 950px;
  margin-left: auto;
  margin-right: auto;
  color: var(--yuebai);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.hero-title-line {
  display: block;
  white-space: nowrap;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--yuebai) 0%, var(--gutongjin) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 14px rgba(196, 167, 125, 0.25);
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--yunwuhui);
  max-width: 760px;
  margin: 0 auto 36px auto;
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 45px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 880px;
  margin: 45px auto 0 auto;
  padding-top: 32px;
  border-top: 1px solid rgba(183, 201, 217, 0.2);
}
.stat-item h3 {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--gutongjin);
  margin-bottom: 4px;
}
.stat-item p {
  font-size: 0.86rem;
  color: var(--yunwuhui);
}

/* 核心优势卡片 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(8px);
}
.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--gutongjin);
  box-shadow: var(--shadow-md);
}
.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(74, 107, 134, 0.25);
  border: 1px solid rgba(196, 167, 125, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  color: var(--gutongjin);
}
.feature-icon-wrap svg {
  width: 28px;
  height: 28px;
  stroke: currentColor;
}
.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--yuebai);
}
.feature-card p {
  color: var(--yunwuhui);
  font-size: 0.95rem;
  line-height: 1.65;
}
.feature-list {
  margin-top: 18px;
  list-style: none;
}
.feature-list li {
  font-size: 0.88rem;
  color: #dce5ee;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.feature-list li::before {
  content: "✓";
  color: var(--gutongjin);
  font-weight: 700;
}

/* 流媒体与 AI 支持 */
.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(8px);
}
.support-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--yuebai);
}
.support-card p {
  color: var(--yunwuhui);
  font-size: 0.95rem;
  margin-bottom: 20px;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-item {
  padding: 6px 14px;
  background: rgba(22, 32, 43, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: #dce5ee;
}
.tag-item.highlight {
  border-color: rgba(196, 167, 125, 0.5);
  background: rgba(74, 107, 134, 0.3);
  color: var(--yuebai);
}

/* 价格表 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.25s ease, border-color 0.25s ease;
  backdrop-filter: blur(8px);
}
.pricing-card.popular {
  border-color: var(--gutongjin);
  background: linear-gradient(180deg, rgba(74, 107, 134, 0.25) 0%, var(--bg-card) 45%);
  transform: scale(1.03);
  box-shadow: 0 12px 32px rgba(10, 16, 23, 0.55);
}
.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--gutongjin) 0%, #a88a5e 100%);
  color: #1a2530;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: 999px;
  letter-spacing: 0.8px;
}
.pricing-header {
  margin-bottom: 24px;
  text-align: center;
}
.pricing-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--yuebai);
}
.pricing-desc {
  font-size: 0.88rem;
  color: var(--yunwuhui);
}
.pricing-price {
  margin: 18px 0;
  text-align: center;
}
.currency {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--gutongjin);
  vertical-align: super;
}
.amount {
  font-size: 3rem;
  font-weight: 800;
  color: var(--yuebai);
  line-height: 1;
}
.period {
  font-size: 0.9rem;
  color: var(--yunwuhui);
}
.pricing-features {
  list-style: none;
  margin: 24px 0;
  flex-grow: 1;
}
.pricing-features li {
  padding: 10px 0;
  border-bottom: 1px dashed rgba(56, 78, 99, 0.7);
  font-size: 0.92rem;
  color: #dce5ee;
  display: flex;
  align-items: center;
  gap: 10px;
}
.pricing-features li:last-child {
  border-bottom: none;
}
.pricing-features li svg {
  width: 16px;
  height: 16px;
  fill: var(--gutongjin);
  flex-shrink: 0;
}
.pricing-cta {
  width: 100%;
}

/* 价格对比表（增强无障碍语义） */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin-top: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}
.compare-table caption {
  padding: 14px 20px;
  font-size: 1rem;
  font-weight: 700;
  text-align: left;
  background: #18232e;
  color: var(--yuebai);
  border-bottom: 1px solid var(--border-color);
}
.compare-table th, .compare-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-color);
}
.compare-table th {
  background: rgba(22, 32, 43, 0.7);
  color: var(--yuebai);
  font-weight: 600;
}
.compare-table tr:hover td {
  background: rgba(74, 107, 134, 0.15);
}

/* 用户评价 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.review-stars {
  color: var(--gutongjin);
  font-size: 1.1rem;
  margin-bottom: 12px;
}
.review-text {
  font-size: 0.95rem;
  color: #dce5ee;
  line-height: 1.65;
  margin-bottom: 20px;
  font-style: italic;
}
.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--daiqing), var(--yanyu));
  border: 1px solid var(--gutongjin);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--yuebai);
  font-size: 0.95rem;
}
.review-info h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--yuebai);
}
.review-info p {
  font-size: 0.78rem;
  color: var(--yunwuhui);
}

/* FAQ 常见问题解答 (原生 details / summary，默认展开) */
.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: border-color 0.2s ease;
}
.faq-item[open] {
  border-color: rgba(196, 167, 125, 0.5);
}
.faq-item summary {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--yuebai);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  outline: none;
  user-select: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "▾";
  font-size: 1.2rem;
  color: var(--gutongjin);
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after {
  transform: rotate(180deg);
}
.faq-answer {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(56, 78, 99, 0.5);
  color: var(--yunwuhui);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-answer p {
  margin-bottom: 8px;
}
.faq-answer p:last-child {
  margin-bottom: 0;
}

/* 页脚：严格只保留四个链接入口 */
.site-footer {
  margin-top: auto;
  background: #101821;
  border-top: 1px solid var(--border-color);
  padding: 40px 0 30px 0;
}
.footer-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}
.footer-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-nav a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--yunwuhui);
  padding: 6px 4px;
}
.footer-nav a:hover {
  color: var(--yuebai);
  text-decoration: underline;
}
.footer-copy {
  font-size: 0.82rem;
  color: #7d93a6;
}

/* 文章详情页与知识科普页专属样式 */
.article-header {
  padding: 60px 0 30px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 40px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--yunwuhui);
  font-size: 0.88rem;
  margin-top: 16px;
  flex-wrap: wrap;
}
.article-content {
  max-width: 820px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.8;
  color: #dce5ee;
}
.article-content h2 {
  font-size: 1.6rem;
  color: var(--yuebai);
  margin: 36px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  scroll-margin-top: calc(var(--header-height) + 20px);
}
.article-content h3 {
  font-size: 1.25rem;
  color: var(--gutongjin);
  margin: 26px 0 12px 0;
}
.article-content p {
  margin-bottom: 20px;
}
.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-callout {
  background: rgba(74, 107, 134, 0.18);
  border-left: 4px solid var(--gutongjin);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 28px 0;
  font-size: 0.98rem;
  color: var(--yuebai);
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--gutongjin);
}
.article-card h2, .article-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  line-height: 1.4;
  color: var(--yuebai);
}
.article-card p {
  color: var(--yunwuhui);
  font-size: 0.9rem;
  margin-bottom: 16px;
  flex-grow: 1;
}
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--yunwuhui);
  margin-bottom: 20px;
}
.breadcrumbs a {
  color: var(--yunwuhui);
}
.breadcrumbs a:hover {
  color: var(--yuebai);
}
.breadcrumbs span {
  color: var(--yunwuhui);
}

/* 响应式媒体查询（手机端适配） */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.3rem;
  }
  .features-grid, .pricing-grid, .article-grid {
    grid-template-columns: 1fr;
  }
  .pricing-card.popular {
    transform: none;
  }
  .support-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: auto;
  }
  .site-header {
    height: auto;
    padding: 8px 0;
  }
  .nav-wrapper {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .site-logo-img {
    height: 30px;
    max-width: 150px;
  }
  .nav-links {
    width: 100%;
    overflow-x: auto;
    white-space: nowrap;
    gap: 16px;
    padding: 4px 2px 6px 2px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .nav-links::-webkit-scrollbar {
    display: none;
  }
  .nav-links li {
    flex-shrink: 0;
  }
  .nav-links a {
    font-size: 0.88rem;
    padding: 4px 2px;
  }
  .header-cta {
    display: none;
  }

  /* 手机端背景切换为 hero-mobile.webp */
  .hero-section {
    padding: 60px 0 45px 0;
    background-image: url('public/assets/hero-mobile.webp');
    background-size: cover;
    background-position: center top;
  }
  .moonlight-breathe {
    width: 380px;
    height: 320px;
  }
  .hero-title {
    font-size: 1.65rem;
    gap: 8px;
    line-height: 1.35;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .section {
    padding: 50px 0;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }
  .btn {
    width: 100%;
    min-height: 48px;
  }
  .hero-actions {
    flex-direction: column;
  }
}

@media (max-width: 390px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .hero-title {
    font-size: 1.32rem;
    gap: 6px;
    line-height: 1.35;
  }
  .hero-stats {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

/* 遵循 prefers-reduced-motion: 禁用复杂动画保持静态优雅 */
@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;
  }
  .moonlight-breathe, .mist-flow, .clouds-drift {
    animation: none !important;
  }
}