/* ==========================================================================
   六仙云 (Liu Xian Yun) - 国风仙侠水墨风纯CSS样式表
   域名: lxidc.homes
   无任何第三方重型依赖，秒开级极简架构
   ========================================================================== */

:root {
  --bg-rice-paper: #f8f5ee;
  --bg-rice-subtle: #f2ece0;
  --bg-card: #ffffff;
  --bg-card-alt: #fcfbf7;
  
  --ink-primary: #1c1d1f;
  --ink-secondary: #3e4145;
  --ink-muted: #72777d;
  --ink-border: #e3dbc9;
  --ink-border-light: #ece6da;
  
  --vermilion: #b03a2e;       /* 朱砂红主强调色 */
  --vermilion-hover: #962d23;
  --vermilion-light: #fbeee9;
  --vermilion-glow: rgba(176, 58, 46, 0.18);
  
  --gold-accent: #b89158;     /* 描金点缀 */
  --gold-light: #f7f1e6;
  
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "STSong", "Songti SC", "SimSun", "FangSong", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  
  --shadow-sm: 0 2px 8px rgba(28, 29, 31, 0.04);
  --shadow-md: 0 6px 20px rgba(28, 29, 31, 0.06);
  --shadow-lg: 0 12px 36px rgba(28, 29, 31, 0.09);
  --shadow-vermilion: 0 8px 24px rgba(176, 58, 46, 0.25);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --container-max: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-rice-paper);
  color: var(--ink-secondary);
  line-height: 1.75;
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(var(--ink-border-light) 0.75px, transparent 0.75px),
    linear-gradient(to bottom, #fbf9f3 0%, var(--bg-rice-paper) 100%);
  background-size: 24px 24px, 100% 100%;
}

/* Canvas 水墨粒子容器层（放在页面底层，不阻挡交互） */
#inkCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* 页面内容包装器 */
.page-wrapper {
  position: relative;
  z-index: 1;
}

/* 通用容器 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* 东方书法风标题定义 */
h1, h2, h3, h4, .font-serif {
  font-family: var(--font-serif);
  color: var(--ink-primary);
  font-weight: 700;
  letter-spacing: 0.03em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s ease;
}

ul, ol {
  list-style: none;
}

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

/* 按钮规范 */
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--vermilion);
  color: #ffffff !important;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  padding: 13px 32px;
  border-radius: var(--radius-sm);
  border: 1px solid #942b20;
  box-shadow: var(--shadow-vermilion);
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.btn-cta:hover {
  background: var(--vermilion-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(176, 58, 46, 0.35);
}

.btn-cta:active {
  transform: translateY(0);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.85);
  color: var(--ink-primary) !important;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--ink-border);
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.btn-outline:hover {
  border-color: var(--vermilion);
  color: var(--vermilion) !important;
  background: #ffffff;
}

/* 朱红古印章效果 */
.seal-stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 2px solid var(--vermilion);
  border-radius: 4px;
  color: var(--vermilion);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.05rem;
  line-height: 1;
  background-color: var(--vermilion-light);
  transform: rotate(-3deg);
  user-select: none;
  box-shadow: inset 0 0 4px rgba(176, 58, 46, 0.2);
}

.seal-stamp-large {
  width: 44px;
  height: 44px;
  font-size: 1.4rem;
  border-width: 2.5px;
}

/* 竖排点缀文字栏 */
.vertical-seal-ribbon {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-serif);
  color: var(--vermilion);
  background: var(--vermilion-light);
  border: 1px solid var(--vermilion);
  padding: 12px 6px;
  font-size: 0.82rem;
  letter-spacing: 0.35em;
  font-weight: 700;
  border-radius: 3px;
  box-shadow: var(--shadow-sm);
}

/* 顶部导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 245, 238, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ink-border);
  transition: background-color 0.3s ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--ink-primary);
  letter-spacing: 0.04em;
}

.brand-logo span.badge {
  font-size: 0.72rem;
  background: var(--gold-light);
  color: var(--gold-accent);
  padding: 2px 7px;
  border-radius: 3px;
  border: 1px solid #e8dbbe;
  font-weight: normal;
  letter-spacing: 0;
}

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

.nav-link {
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--ink-secondary);
  position: relative;
  padding: 6px 2px;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--vermilion);
  transition: all 0.25s ease;
  transform: translateX(-50%);
}

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

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

/* 移动端菜单切换按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  cursor: pointer;
  color: var(--ink-primary);
  font-size: 1.1rem;
}

/* ==========================================================================
   Hero 主视觉区
   ========================================================================== */
.hero-section {
  padding: 64px 0 84px;
  position: relative;
}

.hero-layout {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 36px;
  align-items: start;
}

.hero-vertical-aside {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding-top: 8px;
}

.hero-content {
  max-width: 900px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--vermilion-light);
  border: 1px solid rgba(176, 58, 46, 0.3);
  color: var(--vermilion);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.2rem;
  line-height: 1.25;
  margin-bottom: 20px;
  color: var(--ink-primary);
  position: relative;
}

.hero-title .brand-accent {
  color: var(--vermilion);
  position: relative;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--ink-secondary);
  font-family: var(--font-serif);
  margin-bottom: 20px;
  line-height: 1.5;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--ink-muted);
  line-height: 1.85;
  margin-bottom: 32px;
  max-width: 760px;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 36px;
}

/* 墨境交互提示条 */
.ink-interaction-hint {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px dashed var(--ink-border);
  border-radius: 30px;
  font-size: 0.86rem;
  color: var(--ink-muted);
  box-shadow: var(--shadow-sm);
}

.ink-interaction-hint .dot {
  width: 8px;
  height: 8px;
  background: var(--vermilion);
  border-radius: 50%;
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.4); opacity: 0.4; }
}

/* 核心特性数据跑马 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  padding: 24px 32px;
  background: var(--bg-card);
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.stat-item {
  text-align: center;
  border-right: 1px solid var(--ink-border-light);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--ink-primary);
  line-height: 1.2;
}

.stat-number .unit {
  font-size: 1rem;
  color: var(--vermilion);
  margin-left: 2px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-top: 4px;
}

/* ==========================================================================
   通用 Section 规范
   ========================================================================== */
.section {
  padding: 72px 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-card-alt);
  border-top: 1px solid var(--ink-border-light);
  border-bottom: 1px solid var(--ink-border-light);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--vermilion);
  background: var(--vermilion-light);
  border: 1px solid rgba(176, 58, 46, 0.25);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  color: var(--ink-primary);
}

.section-subtitle {
  font-size: 1.02rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

/* ==========================================================================
   单字核心优势卡片：瞬 / 护 / 潮
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-md);
  padding: 38px 30px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(176, 58, 46, 0.4);
  box-shadow: var(--shadow-lg);
}

/* 巨幅背景书法水墨水印字符 */
.feature-watermark {
  position: absolute;
  top: -15px;
  right: 12px;
  font-family: var(--font-serif);
  font-size: 8rem;
  font-weight: 900;
  color: rgba(28, 29, 31, 0.035);
  pointer-events: none;
  line-height: 1;
  user-select: none;
  transition: color 0.3s ease;
}

.feature-card:hover .feature-watermark {
  color: rgba(176, 58, 46, 0.07);
}

.feature-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.4rem;
  color: var(--ink-primary);
}

.feature-desc {
  font-size: 0.96rem;
  color: var(--ink-secondary);
  line-height: 1.8;
  margin-bottom: 22px;
}

.feature-points {
  border-top: 1px dashed var(--ink-border);
  padding-top: 18px;
}

.feature-point {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--ink-muted);
  margin-bottom: 8px;
}

.feature-point::before {
  content: "◆";
  color: var(--vermilion);
  font-size: 0.65rem;
}

/* ==========================================================================
   流媒体与 AI 支持图卡
   ========================================================================== */
.support-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.support-block {
  background: var(--bg-card);
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
}

.support-block-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.support-block-title h3 {
  font-size: 1.35rem;
}

.support-badge {
  font-size: 0.78rem;
  color: #27ae60;
  background: #eafaf1;
  border: 1px solid #d4efdf;
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 600;
}

.support-desc {
  font-size: 0.94rem;
  color: var(--ink-muted);
  margin-bottom: 24px;
  line-height: 1.7;
}

.grid-badges {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.badge-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px 12px;
  background: var(--bg-card-alt);
  border: 1px solid var(--ink-border-light);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all 0.25s ease;
}

.badge-item:hover {
  border-color: var(--vermilion);
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.badge-icon {
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.badge-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink-primary);
}

.badge-spec {
  font-size: 0.75rem;
  color: var(--ink-muted);
  margin-top: 2px;
}

/* ==========================================================================
   真实套餐价格对比表
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-md);
  padding: 34px 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

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

/* 推荐热销套餐高亮 */
.pricing-card.featured {
  border: 2px solid var(--vermilion);
  box-shadow: var(--shadow-vermilion);
  background: #ffffff;
  transform: scale(1.02);
}

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

.pricing-top-tag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--vermilion);
  color: #ffffff;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 8px rgba(176, 58, 46, 0.4);
  white-space: nowrap;
}

.plan-name {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--ink-muted);
  min-height: 40px;
}

.plan-price-wrap {
  margin: 20px 0 24px;
  padding: 16px 0;
  border-top: 1px dashed var(--ink-border);
  border-bottom: 1px dashed var(--ink-border);
}

.plan-currency {
  font-size: 1.2rem;
  color: var(--vermilion);
  font-weight: 700;
}

.plan-price {
  font-family: var(--font-serif);
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--ink-primary);
  line-height: 1;
}

.plan-period {
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.plan-features {
  flex-grow: 1;
  margin-bottom: 28px;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--ink-secondary);
  margin-bottom: 12px;
}

.plan-features li .check {
  color: var(--vermilion);
  font-weight: 700;
  font-size: 1rem;
}

.pricing-card .btn-cta, .pricing-card .btn-outline {
  width: 100%;
}

/* ==========================================================================
   仙友留墨 / 用户评价 (Testimonials)
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  position: relative;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.rating-stars {
  color: #e67e22;
  font-size: 0.95rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  line-height: 1.8;
  flex-grow: 1;
  margin-bottom: 20px;
}

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

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--vermilion-light);
  border: 1px solid var(--vermilion);
  color: var(--vermilion);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1rem;
}

.author-info h4 {
  font-size: 0.92rem;
  color: var(--ink-primary);
}

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

/* ==========================================================================
   常见问题解答 (FAQ)
   ========================================================================== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.25s ease;
}

.faq-item[open] {
  border-color: var(--vermilion);
}

.faq-summary {
  padding: 20px 24px;
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--ink-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

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

.faq-summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--vermilion);
  font-weight: 400;
  transition: transform 0.25s ease;
}

.faq-item[open] .faq-summary::after {
  content: "−";
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 22px;
  font-size: 0.95rem;
  color: var(--ink-secondary);
  line-height: 1.85;
  border-top: 1px dashed var(--ink-border-light);
  margin-top: 4px;
}

/* ==========================================================================
   页脚规范（严格只保留4个标题，打开新页面）
   ========================================================================== */
.site-footer {
  background: #1c1d1f;
  color: #c9cdd2;
  border-top: 3px solid var(--vermilion);
  padding: 56px 0 36px;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 32px;
  border-bottom: 1px solid #323539;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand-wrap .brand-logo {
  color: #ffffff;
}

.footer-slogan {
  font-size: 0.88rem;
  color: #8c9299;
}

/* 4个规定标题导航 */
.footer-nav-strictly-four {
  display: flex;
  align-items: center;
  gap: 36px;
}

.footer-nav-strictly-four a {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: #e4e7eb;
  font-weight: 600;
  letter-spacing: 0.05em;
  position: relative;
  padding: 6px 0;
}

.footer-nav-strictly-four a:hover {
  color: #ffffff;
  text-decoration: underline;
  text-decoration-color: var(--vermilion);
  text-underline-offset: 6px;
}

.footer-bottom {
  margin-top: 32px;
  text-align: center;
  font-size: 0.84rem;
  color: #797f85;
  line-height: 1.7;
}

.footer-bottom p {
  margin-bottom: 6px;
}

/* ==========================================================================
   资讯中心 / 文章内页专属版式
   ========================================================================== */
.article-hub-header {
  padding: 60px 0 40px;
  text-align: center;
  background: var(--bg-card-alt);
  border-bottom: 1px solid var(--ink-border-light);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin: 50px 0 80px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

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

.article-card-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  color: var(--vermilion);
  background: var(--vermilion-light);
  padding: 3px 10px;
  border-radius: 12px;
  margin-bottom: 14px;
  font-weight: 600;
}

.article-card-title {
  font-size: 1.25rem;
  line-height: 1.45;
  margin-bottom: 14px;
  color: var(--ink-primary);
}

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

.article-card-summary {
  font-size: 0.9rem;
  color: var(--ink-muted);
  line-height: 1.7;
  flex-grow: 1;
  margin-bottom: 20px;
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--ink-muted);
  border-top: 1px dashed var(--ink-border-light);
  padding-top: 14px;
}

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

/* 文章详情页专属排版 */
.article-detail-wrap {
  max-width: 860px;
  margin: 40px auto 80px;
  background: var(--bg-card);
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-md);
  padding: 48px 56px;
  box-shadow: var(--shadow-sm);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--ink-muted);
  margin-bottom: 28px;
}

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

.article-header {
  border-bottom: 1px solid var(--ink-border-light);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.article-title {
  font-size: 2.3rem;
  line-height: 1.35;
  margin-bottom: 16px;
  color: var(--ink-primary);
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.86rem;
  color: var(--ink-muted);
  flex-wrap: wrap;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.95;
  color: var(--ink-secondary);
}

.article-content h2 {
  font-size: 1.65rem;
  margin: 40px 0 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--vermilion);
  color: var(--ink-primary);
}

.article-content h3 {
  font-size: 1.3rem;
  margin: 28px 0 14px;
  color: var(--ink-primary);
}

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

.article-content ul, .article-content ol {
  margin: 16px 0 24px 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(--vermilion);
  background: var(--bg-card-alt);
  padding: 16px 22px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: normal;
  color: var(--ink-secondary);
}

.article-content code {
  background: #f4efe6;
  color: var(--vermilion);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: monospace;
}

.article-content pre {
  background: #242729;
  color: #e6e9ed;
  padding: 18px 22px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin: 20px 0;
  font-size: 0.92rem;
  line-height: 1.6;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.95rem;
}

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

.article-content th {
  background: var(--bg-card-alt);
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--ink-primary);
}

.article-cta-box {
  margin: 44px 0 20px;
  background: linear-gradient(135deg, #fbf7ef 0%, #f4ece0 100%);
  border: 1px solid #dfd2be;
  border-left: 5px solid var(--vermilion);
  padding: 28px 32px;
  border-radius: var(--radius-sm);
  text-align: center;
}

.article-cta-box h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
}

.article-cta-box p {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  margin-bottom: 18px;
}

/* 法律/关于页面通用样式 */
.legal-content-wrap {
  max-width: 900px;
  margin: 44px auto 80px;
  background: var(--bg-card);
  border: 1px solid var(--ink-border);
  border-radius: var(--radius-md);
  padding: 44px 50px;
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   响应式媒体查询 (@media) - 确保手机端单栏完美适配与按压体验
   ========================================================================== */
@media (max-width: 1080px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* 导航栏手机端自适应 */
  .nav-menu {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: rgba(248, 245, 238, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 20px 24px;
    border-bottom: 1px solid var(--ink-border);
    box-shadow: var(--shadow-md);
    gap: 16px;
  }

  .nav-menu.open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  /* 主视觉区单栏 */
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .hero-vertical-aside {
    display: none; /* 移动端隐藏过窄的竖列，移入主视觉顶部 */
  }

  .hero-title {
    font-size: 2.15rem;
  }

  .hero-subtitle {
    font-size: 1.15rem;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 18px 16px;
  }

  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--ink-border-light);
    padding-bottom: 12px;
  }

  .stat-item:nth-child(3), .stat-item:nth-child(4) {
    border-bottom: none;
    padding-bottom: 0;
  }

  /* 核心优势、支持卡、价格表、评价全部单栏 */
  .features-grid {
    grid-template-columns: 1fr;
  }

  .support-container {
    grid-template-columns: 1fr;
  }

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

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .article-grid {
    grid-template-columns: 1fr;
  }

  /* 按钮适配拇指操作：高度放大、44px以上触控区域 */
  .btn-cta, .btn-outline {
    width: 100%;
    padding: 14px 24px;
    font-size: 1.05rem;
    min-height: 48px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions a {
    width: 100%;
  }

  /* 文章与法律页面缩紧内边距 */
  .article-detail-wrap, .legal-content-wrap {
    padding: 26px 20px;
    margin: 20px auto 40px;
  }

  .article-title {
    font-size: 1.65rem;
  }

  /* 页脚在移动端垂直单栏排列 */
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-nav-strictly-four {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    width: 100%;
  }
}