/* ==========================================================================
   悠兔机场 (youtu.baby) - 官网样式表
   视觉风格：T10 清荷雅韵 | 背景风格：B04 暖白极简 | 品牌配色：C03 鼠尾草绿 × 奶油白
   排版结构：L03 全宽海报 | 字体风格：F03 优雅宋体标题 | 卡片：K02 半透明玻璃
   ========================================================================== */

:root {
  --primary: #6C8B74;
  --primary-hover: #597761;
  --primary-light: #8AA89B;
  --primary-faint: rgba(108, 139, 116, 0.08);
  --accent-gold: #D8B26E;
  --bg-page: #FAF9F6;
  --bg-section-alt: #F3F5EF;
  --card-glass: rgba(255, 255, 255, 0.78);
  --card-border: rgba(108, 139, 116, 0.18);
  --text-main: #243029;
  --text-body: #4A564F;
  --text-muted: #728076;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --shadow-sm: 0 4px 16px rgba(108, 139, 116, 0.06);
  --shadow-md: 0 10px 30px rgba(108, 139, 116, 0.09);
  --shadow-lg: 0 18px 45px rgba(108, 139, 116, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: all 0.28s ease-in-out;
  --max-width: 1200px;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-body);
  line-height: 1.75;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(138, 168, 155, 0.07) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(108, 139, 116, 0.06) 0%, transparent 40%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

button, input {
  font: inherit;
}

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

/* 字体排版 */
h1, h2, h3, h4, .font-serif {
  font-family: var(--font-serif);
  color: var(--text-main);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary);
  background-color: var(--primary-faint);
  border: 1px solid var(--card-border);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.15rem;
  margin-bottom: 14px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  display: block;
  width: 44px;
  height: 2px;
  background-color: var(--primary);
  margin: 10px auto 0;
  border-radius: 2px;
  opacity: 0.6;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  font-size: 0.95rem;
}

.btn-primary {
  background-color: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(108, 139, 116, 0.3);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(108, 139, 116, 0.4);
}

.btn-outline {
  background-color: rgba(255, 255, 255, 0.85);
  color: var(--primary);
  border-color: var(--card-border);
  backdrop-filter: blur(6px);
}

.btn-outline:hover {
  background-color: var(--primary-faint);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* 顶部导航 - N02 极简留白导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 249, 246, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(108, 139, 116, 0.12);
  padding: 14px 0;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 品牌必须只显示：兔子Logo + 悠兔 */
.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.brand-text {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.08em;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--text-main);
  position: relative;
  padding: 4px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width 0.25s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.search-trigger-btn {
  background: var(--card-glass);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-full);
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.search-trigger-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: #FFFFFF;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--text-main);
}

/* Hero 区域 - 清荷雅韵主视觉 */
.hero-section {
  padding: 60px 0 50px;
  position: relative;
  background-color: #FAF9F6;
  background-image: linear-gradient(90deg, #FAF9F6 0%, #FAF9F6 34%, rgba(250, 249, 246, 0.4) 48%, rgba(250, 249, 246, 0) 65%), url('../assets/visual/youtu_baby backgroud image.jpg');
  background-repeat: no-repeat;
  background-position: right center;
  background-size: cover;
  overflow: hidden;
}

.hero-container {
  display: flex;
  flex-direction: column;
}

.hero-main-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 460px;
}

.hero-content {
  max-width: 560px;
  margin: 0;
  text-align: left;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background-color: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  color: var(--primary);
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2.85rem;
  line-height: 1.25;
  margin-bottom: 20px;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.hero-title-brand {
  display: inline-block;
  white-space: nowrap;
}

.hero-title-brand::after {
  content: " ｜ ";
  color: #D1D5DB;
  font-weight: 300;
  margin: 0 4px;
}

.hero-title-sub {
  color: var(--primary);
  display: inline-block;
}

.hero-desc {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 32px;
  max-width: 490px;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.hero-mobile-visual {
  display: none;
}

/* Hero 玻璃卡片微面板 */
.hero-stats-panel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 960px;
  margin: 20px auto 0;
  background: var(--card-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px 30px;
  box-shadow: var(--shadow-md);
}

.hero-stat-item {
  text-align: center;
  padding: 10px;
}

.hero-stat-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 10px;
  color: var(--primary);
}

.hero-stat-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-main);
}

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

/* 核心优势区 - 导入 section-bg-01 低对比背景 */
.features-section {
  padding: 85px 0;
  position: relative;
  background-color: #FAF9F6;
  background-image: url('../assets/visual/section-bg-01.webp');
  background-repeat: no-repeat;
  background-position: center top;
  background-size: cover;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--card-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background-color: var(--primary);
  transition: height 0.3s ease;
}

.feature-card:hover::before {
  height: 100%;
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background-color: var(--primary-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--primary);
}

.feature-title {
  font-size: 1.18rem;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* 生态支持区 - 严格对称等比徽章卡片 */
.ecosystem-section {
  padding: 50px 0 70px;
  background-color: var(--bg-section-alt);
  border-top: 1px solid rgba(108, 139, 116, 0.1);
  border-bottom: 1px solid rgba(108, 139, 116, 0.1);
}

.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 14px;
  max-width: 1120px;
  margin: 0 auto;
  align-items: stretch;
}

.eco-item {
  background: #FFFFFF;
  color: #111827;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 18px 10px;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 124px;
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
}

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

.eco-logo-wrap {
  height: 32px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  flex-shrink: 0;
}

.eco-badge-img {
  height: 30px;
  width: auto;
  max-width: 110px;
  object-fit: contain;
  display: block;
}

.eco-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.45;
  font-weight: 500;
  text-align: center;
  margin: 0;
  width: 100%;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  word-break: break-word;
}

/* 套餐展示区 - 导入 section-bg-02 低对比背景（展示悠兔官方真实核实套餐） */
.pricing-section {
  padding: 85px 0;
  position: relative;
  background-color: #FAF7F2;
  background-image: url('../assets/visual/section-bg-02.webp');
  background-repeat: no-repeat;
  background-position: center top;
  background-size: cover;
}

.pricing-notice {
  text-align: center;
  margin-top: -30px;
  margin-bottom: 40px;
  font-size: 0.88rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.8);
  display: inline-block;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  border: 1px dashed var(--card-border);
}

.pricing-notice-wrapper {
  text-align: center;
}

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

.pricing-card {
  background: var(--card-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--transition);
}

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

.pricing-card.featured {
  border-color: var(--primary);
  background: #FFFFFF;
  box-shadow: var(--shadow-md);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-6px);
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--primary);
  color: #FFFFFF;
  font-size: 0.8rem;
  padding: 3px 14px;
  border-radius: var(--radius-full);
  font-weight: 500;
}

.plan-header {
  border-bottom: 1px solid rgba(108, 139, 116, 0.12);
  padding-bottom: 20px;
  margin-bottom: 22px;
  text-align: center;
}

.plan-name {
  font-size: 1.45rem;
  margin-bottom: 4px;
}

.plan-price-wrap {
  margin: 14px 0 8px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 3px;
}

.plan-currency {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
}

.plan-price-num {
  font-size: 2.45rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1;
}

.plan-period {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.plan-scope {
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 500;
}

.plan-specs {
  margin-bottom: 26px;
  flex-grow: 1;
}

.spec-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 0.92rem;
  color: var(--text-body);
}

.spec-item svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--primary);
  margin-top: 3px;
}

.plan-footer {
  text-align: center;
}

.plan-tip {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* 用户反馈模块 */
.testimonials-section {
  padding: 80px 0;
  background-color: var(--bg-section-alt);
}

.disclaimer-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary);
  background-color: var(--primary-faint);
  border: 1px solid var(--card-border);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--card-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  position: relative;
  transition: var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
  border-color: var(--primary-light);
}

.card-example-tag {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 0.74rem;
  color: var(--primary);
  background-color: var(--primary-faint);
  border: 1px solid var(--card-border);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.stars-row {
  display: flex;
  gap: 3px;
  color: var(--accent-gold);
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.testimonial-content {
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--text-body);
  margin-bottom: 16px;
}

.testimonial-author-meta {
  border-top: 1px dashed rgba(108, 139, 116, 0.15);
  padding-top: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* FAQ 交互区 */
.faq-section {
  padding: 80px 0;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(108, 139, 116, 0.18);
  margin-bottom: 12px;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-main);
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  width: 22px;
  height: 22px;
  color: var(--primary);
  transition: transform 0.28s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 18px;
}

/* 知识科普专区（首页导流卡） */
.articles-preview-section {
  padding: 80px 0;
  background-color: var(--bg-section-alt);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.article-card {
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

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

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.article-tag {
  color: var(--primary);
  background: var(--primary-faint);
  padding: 2px 8px;
  border-radius: 4px;
}

.article-title {
  font-size: 1.15rem;
  margin-bottom: 10px;
  line-height: 1.45;
}

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

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-link {
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-link:hover {
  gap: 8px;
}

/* 统一 CTA 转化带 - 导入 cta-banner.png 横幅背景 */
.cta-banner-section {
  padding: 60px 0;
}

.cta-banner-box {
  background-color: var(--primary);
  background-image: linear-gradient(135deg, rgba(108, 139, 116, 0.88), rgba(78, 109, 86, 0.92)), url('../assets/visual/cta-banner.webp');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  color: #FFFFFF;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.cta-banner-title {
  color: #FFFFFF;
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.cta-banner-desc {
  max-width: 650px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
  opacity: 0.9;
}

.cta-banner-box .btn-primary {
  background-color: #FFFFFF;
  color: var(--primary);
  font-weight: 600;
}

.cta-banner-box .btn-primary:hover {
  background-color: var(--bg-page);
  color: var(--primary-hover);
}

/* 页脚 - 4个固定独立入口规范 */
.site-footer {
  background-color: #FAF7F2;
  border-top: 1px solid rgba(108, 139, 116, 0.16);
  padding: 60px 0 30px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .brand-text {
  margin-bottom: 12px;
}

.footer-desc {
  max-width: 420px;
  line-height: 1.7;
}

.footer-col-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text-main);
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(108, 139, 116, 0.12);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-slogan {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 500;
}

.footer-disclaimer {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 独立内容页通用样式（文章详情/关于/条款/隐私/404） */
.page-header {
  padding: 50px 0 30px;
  text-align: center;
  background-color: var(--bg-section-alt);
  border-bottom: 1px solid rgba(108, 139, 116, 0.1);
  margin-bottom: 40px;
}

.page-title {
  font-size: 2.3rem;
  margin-bottom: 12px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--primary);
}

.article-content-container {
  max-width: 820px;
  margin: 0 auto;
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 60px;
}

.article-content {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-body);
}

.article-content h2 {
  font-size: 1.55rem;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(108, 139, 116, 0.15);
}

.article-content h3 {
  font-size: 1.25rem;
  margin: 24px 0 12px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

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

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

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

.article-content blockquote {
  border-left: 4px solid var(--primary);
  background-color: var(--primary-faint);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}

.article-nav-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(108, 139, 116, 0.15);
  padding-top: 24px;
  margin-top: 36px;
}

/* 搜索模态框弹窗 */
.search-modal {
  position: fixed;
  inset: 0;
  background: rgba(36, 48, 41, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 100px;
  padding-left: 20px;
  padding-right: 20px;
}

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

.search-box {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 640px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--card-border);
  overflow: hidden;
}

.search-header {
  display: flex;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(108, 139, 116, 0.12);
  gap: 12px;
}

.search-input {
  flex-grow: 1;
  border: none;
  outline: none;
  font-size: 1.1rem;
  color: var(--text-main);
  background: transparent;
}

.search-close-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1.3rem;
  padding: 4px;
}

.search-results-list {
  max-height: 380px;
  overflow-y: auto;
  padding: 12px;
}

.search-item {
  display: block;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  margin-bottom: 6px;
}

.search-item:hover {
  background-color: var(--primary-faint);
}

.search-item-title {
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

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

/* 响应式断点适配 (1024px, 768px, 390px, 360px) */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ecosystem-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
  }
  .eco-item {
    flex: 0 0 148px;
    width: 148px;
    height: 124px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 10px 0;
  }
  .brand-logo-img {
    width: 32px;
    height: 32px;
  }
  .brand-text {
    font-size: 1.3rem;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .nav-actions {
    gap: 8px;
    flex-shrink: 0;
  }
  /* 移动端保留紧凑注册按钮，全站唯一注册入口 */
  .nav-actions .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    font-size: 0.82rem;
    font-weight: 600;
    border-radius: 6px;
    white-space: nowrap;
    line-height: 1.2;
  }
  /* 移动端搜索按钮转为40x40正方形图标按钮 */
  .search-trigger-btn {
    padding: 8px;
    width: 40px;
    height: 40px;
    justify-content: center;
    border-radius: 50%;
  }
  .search-trigger-btn span {
    display: none;
  }
  .hero-section {
    padding: 40px 0 30px;
    background-image: none;
    text-align: center;
  }
  .hero-main-row {
    flex-direction: column;
    min-height: auto;
  }
  .hero-content {
    max-width: 100%;
    text-align: center;
    margin: 0 auto;
  }
  .hero-title {
    font-size: 2.1rem;
    line-height: 1.35;
    word-break: keep-all;
    overflow-wrap: break-word;
  }
  .hero-desc {
    font-size: 1rem;
    margin-left: auto;
    margin-right: auto;
  }
  .hero-buttons {
    justify-content: center;
    margin-bottom: 24px;
  }
  .hero-mobile-visual {
    display: block;
    width: 100%;
    margin: 8px 0 24px;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(108, 139, 116, 0.12);
    border: 1px solid rgba(108, 139, 116, 0.18);
    background-color: #FAF9F6;
  }
  .hero-mobile-art {
    width: 100%;
    height: 260px;
    object-fit: cover;
    object-position: right center;
    display: block;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #FAF9F6;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--card-border);
    box-shadow: var(--shadow-md);
    gap: 16px;
  }
  .nav-menu.active {
    display: flex;
  }
  .nav-menu-cta {
    display: none !important;
  }
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
  }
  .hero-stats-panel {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 20px 16px;
    margin-top: 16px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .ecosystem-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
  }
  .eco-item {
    flex: 0 0 140px;
    width: 140px;
    height: 120px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .article-content-container {
    padding: 24px 18px;
  }
}

@media (max-width: 480px) {
  .ecosystem-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
  }
  .eco-item {
    flex: 0 0 calc(50% - 5px);
    width: calc(50% - 5px);
    max-width: calc(50% - 5px);
    height: 112px;
    padding: 14px 6px;
  }
  .eco-logo-wrap {
    height: 28px;
    margin-bottom: 6px;
  }
  .eco-badge-img {
    height: 26px;
    max-width: 85px;
  }
  .eco-desc {
    font-size: 12px;
    height: 34px;
  }
}

@media (max-width: 390px) {
  .hero-title {
    font-size: 1.72rem;
  }
  .section-title {
    font-size: 1.55rem;
  }
  .hero-buttons {
    flex-direction: column;
  }
  .hero-buttons .btn {
    width: 100%;
  }
}

@media (max-width: 360px) {
  .brand-text {
    font-size: 1.15rem;
  }
  .brand-logo-img {
    width: 28px;
    height: 28px;
  }
  .nav-actions {
    gap: 4px;
  }
  .nav-actions .btn {
    padding: 5px 8px;
    font-size: 0.78rem;
  }
  .search-trigger-btn {
    width: 34px;
    height: 34px;
  }
  .mobile-toggle {
    width: 34px;
    height: 34px;
  }
  .hero-title {
    font-size: 1.55rem;
  }
  .eco-desc {
    font-size: 12px;
  }
}