/* ==========================================================================
   大哥云机场 (dageyun-jichang.click) - 核心样式表
   世界观：天文台 (Observatory)
   画风：水彩晕染 (Watercolor Bleed)
   版式原型：卡牌收集 (Card Collection)
   配色系统：主色相 90° (黄绿/青苔草木 #5b8c15 / #4d7c0f) + 撞色 270° (星空紫 #7c3aed)
   招牌动效：卷轴展开 (Scroll Unroll)
   规范：纯原生 CSS3，系统字体栈，短横线小写命名，无外部依赖
   ========================================================================== */

:root {
  --font-system: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* 主色相 90° (草木黄绿 · 天文台铜镜与林木) */
  --color-primary: #5b8c15;
  --color-primary-hover: #486f0f;
  --color-primary-light: #f4f9eb;
  --color-primary-border: #d4e7b5;

  /* 撞色 270° (星空紫 · 深穹极光观测) */
  --color-accent: #7c3aed;
  --color-accent-hover: #6d28d9;
  --color-accent-light: #f5f3ff;
  --color-accent-border: #ddd6fe;

  /* 水彩纸底与墨迹色彩 */
  --color-bg: #fafaf7;
  --color-surface: #ffffff;
  --color-surface-soft: #f4f4ee;
  --color-surface-wash: rgba(91, 140, 21, 0.05);
  --color-text-main: #1f2617;
  --color-text-muted: #556048;
  --color-text-light: #839074;
  --color-border: #e3e6db;
  --color-border-card: #d8ddce;

  /* 卡牌物理与排版参数 */
  --max-width: 1120px;
  --radius-sm: 6px;
  --radius-card: 14px;
  --radius-pill: 9999px;
  --shadow-card: 0 4px 16px rgba(31, 38, 23, 0.05), 0 1px 3px rgba(31, 38, 23, 0.03);
  --shadow-hover: 0 10px 24px rgba(91, 140, 21, 0.12), 0 2px 6px rgba(31, 38, 23, 0.04);
  --transition: 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-system);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 10% 10%, rgba(91, 140, 21, 0.03) 0%, transparent 40%),
    radial-gradient(circle at 90% 85%, rgba(124, 58, 237, 0.03) 0%, transparent 50%);
}

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

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

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

ul, ol {
  list-style: none;
}

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

/* ==========================================================================
   Header 导航栏
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 250, 247, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
  letter-spacing: -0.02em;
}

.site-logo svg {
  width: 32px;
  height: 32px;
}

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

.site-nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 6px 0;
  position: relative;
}

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

.site-nav-link.is-active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-pill);
}

.burger-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text-main);
}

.burger-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: currentColor;
  margin: 5px 0;
  transition: transform var(--transition);
}

/* ==========================================================================
   按钮组件规范 (CTA 词组严格受控)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  padding: 12px 24px;
  border-radius: var(--radius-card);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, #4d7c0f 100%);
  color: #ffffff !important;
  box-shadow: 0 2px 10px rgba(91, 140, 21, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-hover) 0%, #3f660c 100%);
  box-shadow: 0 4px 16px rgba(91, 140, 21, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-main) !important;
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface-soft);
  border-color: var(--color-text-light);
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, #6d28d9 100%);
  color: #ffffff !important;
  box-shadow: 0 2px 10px rgba(124, 58, 237, 0.25);
}

.btn-accent:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary) !important;
  border-color: var(--color-primary-border);
}

.btn-outline:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  font-size: 1.05rem;
  padding: 14px 32px;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   招牌动效：卷轴展开 (Scroll Unroll)
   ========================================================================== */
.scroll-unroll {
  transform-origin: top center;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.5s ease-out;
}

@media (prefers-reduced-motion: no-preference) {
  .scroll-unroll.will-unroll {
    opacity: 0;
    transform: scaleY(0.92) translateY(12px);
  }

  .scroll-unroll.is-unrolled {
    opacity: 1;
    transform: scaleY(1) translateY(0);
  }
}

/* ==========================================================================
   Hero 首屏 (天文台观测站 · 2设备+承诺)
   ========================================================================== */
.hero-section {
  padding: 68px 0 60px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background: radial-gradient(circle at 50% -20%, rgba(91, 140, 21, 0.08) 0%, transparent 70%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 40px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--color-primary-light);
  border: 1px solid var(--color-primary-border);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text-main);
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: clamp(1.02rem, 1.8vw, 1.15rem);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  flex-wrap: wrap;
}

.hero-trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-trust-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

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

.hero-visual svg {
  width: 100%;
  max-width: 380px;
  filter: drop-shadow(0 12px 28px rgba(91, 140, 21, 0.12));
}

/* ==========================================================================
   通用区块排版
   ========================================================================== */
.section {
  padding: 80px 0;
}

.section-alt {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   模块 1: 特性（3项 · 形态：对比表格）
   ========================================================================== */
.table-card-wrapper {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background-color: var(--color-surface-soft);
  font-weight: 700;
  color: var(--color-text-main);
}

.comparison-table th.col-highlight {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.comparison-table td.col-highlight {
  background-color: rgba(91, 140, 21, 0.02);
  font-weight: 600;
}

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

/* ==========================================================================
   模块 2 & 3: 流媒体支持 与 AI 工具支持
   ========================================================================== */
.service-badges-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.service-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px 14px;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition);
}

.service-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.service-card svg {
  width: 32px;
  height: 32px;
  margin: 0 auto 10px;
  color: var(--color-text-main);
}

.service-card-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 4px;
}

.service-card-status {
  font-size: 0.78rem;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  display: inline-block;
}

/* ==========================================================================
   模块 4: FAQ (6条 · 形态：单列手风琴)
   ========================================================================== */
.faq-accordion {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: border-color var(--transition);
}

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

.faq-btn {
  width: 100%;
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: none;
  border: none;
  text-align: left;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-main);
  cursor: pointer;
}

.faq-btn svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-light);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-card.is-open .faq-btn svg {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background-color: var(--color-surface-soft);
}

.faq-card.is-open .faq-content {
  max-height: 400px;
}

.faq-content-inner {
  padding: 0 26px 22px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ==========================================================================
   模块 5: 人群对照 (学生 / 上班族 / 商务 三列卡牌)
   ========================================================================== */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.audience-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-card);
  padding: 32px 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}

.audience-card-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.audience-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 12px;
}

.audience-card-focus {
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 16px;
}

.audience-card-desc {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
  flex: 1;
}

.audience-card-rec {
  padding: 12px 16px;
  background-color: var(--color-surface-soft);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-main);
}

/* ==========================================================================
   模块 6: 定价 (4档 · 形态：月付年付切换标签 · 推荐中档 · PLANS 为空规范)
   ========================================================================== */
.pricing-tabs-wrapper {
  text-align: center;
  margin-bottom: 36px;
}

.pricing-tabs {
  display: inline-flex;
  padding: 4px;
  background-color: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
}

.pricing-tab-btn {
  padding: 8px 24px;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.pricing-tab-btn.is-active {
  background-color: var(--color-surface);
  color: var(--color-text-main);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-card);
  padding: 32px 22px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.pricing-card-featured {
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(91, 140, 21, 0.14);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}

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

.pricing-card-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.pricing-price-box {
  padding: 16px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 22px;
}

.pricing-price-notice {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 4px;
}

.pricing-price-sub {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.pricing-features {
  flex: 1;
  margin-bottom: 26px;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--color-text-main);
  margin-bottom: 12px;
  line-height: 1.45;
}

.pricing-feature-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   Final CTA 倒数第二屏
   ========================================================================== */
.final-cta-section {
  padding: 88px 0;
  background: linear-gradient(135deg, #1f2617 0%, #151b0f 100%);
  color: #ffffff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.final-cta-inner {
  max-width: 680px;
  margin: 0 auto;
}

.final-cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 18px;
  line-height: 1.3;
}

.final-cta-desc {
  font-size: 1.05rem;
  color: #d4e0c8;
  margin-bottom: 34px;
  line-height: 1.7;
}

/* ==========================================================================
   Footer 页脚 (严格禁止文章列表，联盟披露句居中)
   ========================================================================== */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 56px 0 32px;
  margin-top: auto;
}

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

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-top: 14px;
  max-width: 340px;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 16px;
}

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

.footer-links a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

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

.footer-bottom {
  padding-top: 26px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-light);
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   文章与页面通用排版
   ========================================================================== */
.page-header {
  padding: 54px 0 38px;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.breadcrumb-nav a {
  color: var(--color-text-muted);
}

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

.article-title {
  font-size: clamp(1.8rem, 3.5vw, 2.35rem);
  font-weight: 800;
  color: var(--color-text-main);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  flex-wrap: wrap;
}

.article-layout {
  padding: 56px 0 80px;
}

.article-layout-inner {
  display: grid;
  grid-template-columns: minmax(0, 780px) 280px;
  gap: 48px;
  align-items: start;
}

.article-content {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--color-text-main);
}

.article-content h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin: 42px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text-main);
  margin: 28px 0 12px;
}

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

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

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

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

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

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 26px 0;
  font-size: 0.92rem;
}

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

.article-content th {
  background-color: var(--color-surface-soft);
  font-weight: 600;
}

.article-intro-box {
  padding: 24px 28px;
  background-color: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  margin-bottom: 34px;
  font-size: 1.04rem;
  line-height: 1.75;
  color: var(--color-text-main);
}

.article-cta-box {
  margin: 46px 0;
  padding: 34px 30px;
  background: linear-gradient(135deg, var(--color-surface-soft) 0%, var(--color-primary-light) 100%);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-card);
  text-align: center;
}

.article-cta-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 10px;
}

.article-cta-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 22px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.article-faq-box {
  margin: 42px 0;
  padding: 28px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-card);
}

.article-faq-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 18px;
}

.article-faq-item {
  margin-bottom: 16px;
}

.article-faq-q {
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 6px;
}

.article-faq-a {
  font-size: 0.94rem;
  color: var(--color-text-muted);
}

.article-links-box {
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
}

.article-links-title {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 12px;
}

.article-links-box ul {
  list-style: none;
  padding: 0;
}

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

/* 侧边栏 */
.sidebar {
  position: sticky;
  top: 96px;
}

.sidebar-widget {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-card);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-widget-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-widget-list li {
  margin-bottom: 12px;
}

.sidebar-widget-list a {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  display: block;
}

.sidebar-widget-list a:hover {
  color: var(--color-primary);
}

/* 移动端吸底 CTA 栏 */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 99;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 12px 20px;
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
}

/* ==========================================================================
   响应式断点控制
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-visual {
    order: -1;
  }

  .hero-actions,
  .hero-trust {
    justify-content: center;
  }

  .service-badges-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .sidebar {
    display: none;
  }

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

@media (max-width: 768px) {
  .burger-btn {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    align-items: flex-start;
  }

  .site-nav.is-open {
    display: flex;
  }

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

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

  .hero-actions {
    flex-direction: column;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .mobile-sticky-bar {
    display: block;
  }

  body {
    padding-bottom: 68px;
  }
}