/* ===================================================================
   瞬云 (SunYun Cloud) 官方落地页样式表
   版本: 1.0.0
   设计规范: 现代科技风、深蓝/蓝紫渐变、高对比度、全端响应式适配
   =================================================================== */

:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --secondary: #06b6d4;
  --purple: #8b5cf6;
  --gradient-brand: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #06b6d4 100%);
  --gradient-dark: linear-gradient(180deg, #0a0f1d 0%, #0f172a 100%);
  --gradient-card-dark: linear-gradient(145deg, #111827 0%, #1a2234 100%);
  --gradient-hero: linear-gradient(135deg, #080d1a 0%, #0f172a 40%, #1e1b4b 100%);
  
  --bg-dark: #0a0f1d;
  --bg-dark-card: #131c2e;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --bg-muted: #f1f5f9;
  
  --text-white: #ffffff;
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --text-light-muted: #94a3b8;
  
  --border-light: #e2e8f0;
  --border-dark: rgba(255, 255, 255, 0.1);
  --border-focus: #6366f1;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 10px -2px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.35);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-light);
  color: var(--text-body);
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

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

ul, ol {
  list-style: none;
}

/* 容器布局 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 导航栏 (Sticky Header) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 15, 29, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dark);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--gradient-brand);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(79, 70, 229, 0.4);
}

.logo-icon svg {
  width: 22px;
  height: 22px;
  fill: #ffffff;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--secondary);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* 桌面导航 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  color: var(--text-light-muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 4px;
  position: relative;
  transition: color 0.2s ease;
}

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--secondary);
  border-radius: var(--radius-full);
}

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

/* 按钮通用 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-size: 0.95rem;
  transition: all 0.25s ease;
  cursor: pointer;
  border: 1px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.6);
  color: #ffffff;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-dark);
  color: var(--text-white);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-white);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.88rem;
}

.btn-block {
  width: 100%;
}

/* 移动端汉堡按钮 */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-white);
  padding: 8px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.mobile-toggle svg {
  width: 26px;
  height: 26px;
}

/* 移动端菜单抽屉 */
.mobile-nav {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background: #0f172a;
  border-bottom: 1px solid var(--border-dark);
  padding: 20px;
  box-shadow: var(--shadow-lg);
  flex-direction: column;
  gap: 16px;
}

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

.mobile-nav .nav-link {
  padding: 10px 0;
  font-size: 1.05rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* Hero 区域 */
.hero-section {
  background: var(--gradient-hero);
  color: var(--text-white);
  padding: 70px 0 90px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-dark);
}

.hero-section::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, rgba(10, 15, 29, 0) 70%);
  pointer-events: none;
}

.hero-section::after {
  content: "";
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, rgba(10, 15, 29, 0) 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.35);
  color: #a5b4fc;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 8px #34d399;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.025em;
  margin-bottom: 18px;
}

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-light-muted);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 580px;
}

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

.hero-trust {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: #cbd5e1;
}

.trust-item svg {
  width: 18px;
  height: 18px;
  color: var(--secondary);
  flex-shrink: 0;
}

/* Hero 右侧拟态控制台卡片 */
.hero-card {
  background: var(--gradient-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-lg), 0 0 30px rgba(0, 0, 0, 0.5);
  position: relative;
}

.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 20px;
}

.hero-card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
}

.status-badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.server-node-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
}

.node-info {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-white);
}

.node-flag {
  font-size: 1.1rem;
}

.node-ping {
  color: #34d399;
  font-size: 0.82rem;
  font-family: monospace;
  font-weight: 600;
}

/* 核心特性区 */
.features-section {
  padding: 80px 0;
  background: var(--bg-white);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 54px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  letter-spacing: 0.06em;
}

.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

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

.feature-card {
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #cbd5e1;
}

.feature-icon-box {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.feature-icon-box svg {
  width: 24px;
  height: 24px;
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

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

/* 套餐价格专区 (Highest Priority) */
.pricing-section {
  padding: 85px 0;
  background: #0b1120;
  color: var(--text-white);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
  position: relative;
}

.pricing-section .section-title {
  color: var(--text-white);
}

.pricing-section .section-desc {
  color: var(--text-light-muted);
}

.pricing-source-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: #38bdf8;
  font-size: 0.84rem;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-top: 10px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}

.pricing-card {
  background: var(--gradient-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px 24px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(99, 102, 241, 0.5);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(99, 102, 241, 0.2);
}

/* 高亮推荐卡片 */
.pricing-card.featured {
  border-color: var(--primary);
  background: linear-gradient(160deg, #131c36 0%, #1e1b4b 100%);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 25px rgba(79, 70, 229, 0.3);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-brand);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.5);
}

.pricing-card-header {
  margin-bottom: 20px;
  text-align: center;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.84rem;
  color: var(--text-light-muted);
  min-height: 38px;
}

.plan-price-box {
  text-align: center;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 20px;
}

.plan-price-main {
  font-size: 2.35rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.1;
}

.plan-price-main .currency {
  font-size: 1.35rem;
  font-weight: 600;
  margin-right: 2px;
}

.plan-price-main .cycle {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light-muted);
}

.plan-cycle-note {
  font-size: 0.8rem;
  font-weight: 600;
  color: #38bdf8;
  margin-top: 6px;
}

.plan-features {
  flex-grow: 1;
  margin-bottom: 24px;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: #cbd5e1;
  margin-bottom: 12px;
  line-height: 1.5;
}

.plan-feature-item svg {
  width: 16px;
  height: 16px;
  color: #34d399;
  flex-shrink: 0;
  margin-top: 3px;
}

.plan-feature-item.highlight-text {
  color: #ffffff;
  font-weight: 600;
}

.pricing-notice-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  font-size: 0.86rem;
  color: var(--text-light-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.pricing-notice-box strong {
  color: #f1f5f9;
}

.pricing-bottom-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

/* 简易横向参数对比表 */
.comparison-section {
  padding: 70px 0;
  background: var(--bg-white);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  background: #ffffff;
}

.table-plans {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
  min-width: 680px;
}

.table-plans th {
  background: #f8fafc;
  color: var(--text-dark);
  font-weight: 700;
  padding: 14px 18px;
  border-bottom: 2px solid var(--border-light);
  white-space: nowrap;
}

.table-plans td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-body);
}

.table-plans tbody tr:hover {
  background-color: #f8fafc;
}

.table-plans .plan-col-name {
  font-weight: 700;
  color: var(--text-dark);
}

.table-plans .plan-col-price {
  font-weight: 700;
  color: var(--primary);
}

/* 快速入门 4 步指导 */
.steps-section {
  padding: 80px 0;
  background: var(--bg-light);
  border-top: 1px solid var(--border-light);
}

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

.step-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px 22px;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.step-number {
  width: 36px;
  height: 36px;
  background: var(--gradient-brand);
  color: #ffffff;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 16px;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.step-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 文章列表区 */
.articles-section {
  padding: 85px 0;
  background: var(--bg-white);
  border-top: 1px solid var(--border-light);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.article-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: #cbd5e1;
  box-shadow: var(--shadow-md);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 0.82rem;
}

.article-tag {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.article-read-time {
  color: var(--text-muted);
}

.article-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-card-title a {
  color: var(--text-dark);
}

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

.article-card-summary {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--primary);
}

.article-read-more:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* FAQ 常见问题专区 */
.faq-section {
  padding: 80px 0;
  background: var(--bg-light);
  border-top: 1px solid var(--border-light);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: #cbd5e1;
}

.faq-question {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-q-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 800;
  flex-shrink: 0;
}

.faq-answer {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.7;
  padding-left: 36px;
}

/* 用户选购关注点与反馈征集区 */
.feedback-section {
  padding: 75px 0;
  background: var(--bg-white);
  border-top: 1px solid var(--border-light);
}

.concerns-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.concern-card {
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px 18px;
}

.concern-title {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.concern-title svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
}

.concern-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.feedback-cta-box {
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfeff 100%);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.feedback-cta-box h3 {
  font-size: 1.15rem;
  color: #166534;
  margin-bottom: 8px;
}

.feedback-cta-box p {
  font-size: 0.92rem;
  color: #15803d;
  line-height: 1.6;
}

/* 推广透明声明区 */
.aff-disclosure-bar {
  background: #fffbeb;
  border-top: 1px solid #fef3c7;
  border-bottom: 1px solid #fde68a;
  padding: 16px 0;
  font-size: 0.85rem;
  color: #92400e;
  line-height: 1.6;
}

.aff-disclosure-bar .container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.aff-disclosure-bar svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: #d97706;
}

/* 页脚 Footer */
.site-footer {
  background: #0a0f1d;
  color: #94a3b8;
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-dark);
  font-size: 0.9rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand-desc {
  font-size: 0.88rem;
  color: #64748b;
  line-height: 1.7;
  margin-top: 14px;
  max-width: 320px;
}

.footer-col-title {
  color: #f8fafc;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
}

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

.footer-links a {
  color: #94a3b8;
  font-size: 0.88rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #ffffff;
}

.friendly-links-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.friendly-link-item {
  color: #94a3b8 !important;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
}

.friendly-link-item:hover {
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.2);
}

.footer-bottom {
  padding-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 0.82rem;
  color: #64748b;
  text-align: center;
}

.footer-disclaimer-text {
  line-height: 1.6;
}

/* ===================================================================
   文章内页独立专属样式 (Article Page Layout)
   =================================================================== */

.article-page-wrap {
  background: #f8fafc;
  padding: 40px 0 70px;
}

.breadcrumb-nav {
  margin-bottom: 24px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

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

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

.breadcrumb-separator {
  margin: 0 8px;
  color: #cbd5e1;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.article-main-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 42px 48px;
  box-shadow: var(--shadow-sm);
}

.article-header {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 24px;
  margin-bottom: 30px;
}

.article-category-badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.article-title-main {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.35;
  margin-bottom: 16px;
}

.article-info-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.article-info-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 文章正文排版规范 */
.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #1e293b;
}

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

.article-content h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-top: 36px;
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-top: 26px;
  margin-bottom: 12px;
  line-height: 1.4;
}

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

.article-content ul li {
  list-style-type: disc;
  margin-bottom: 8px;
}

.article-content ol li {
  list-style-type: decimal;
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 4px solid var(--secondary);
  background: #f0fdf4;
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  font-size: 0.96rem;
  color: #166534;
}

.callout-box {
  background: #f1f5f9;
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 18px 22px;
  margin: 26px 0;
  font-size: 0.95rem;
}

.callout-box strong {
  color: var(--text-dark);
}

.article-summary-box {
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 28px;
  font-size: 0.96rem;
  line-height: 1.7;
}

.article-summary-title {
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 文章底部内链 */
.article-footer-links {
  margin-top: 45px;
  padding-top: 30px;
  border-top: 1px solid var(--border-light);
}

.article-footer-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.related-article-card {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px;
  background: #f8fafc;
  transition: all 0.2s ease;
}

.related-article-card:hover {
  background: #ffffff;
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.related-article-card h4 {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.related-article-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
}

/* 文章侧边栏 */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 92px;
}

.sidebar-widget {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.sidebar-widget-dark {
  background: var(--gradient-card-dark);
  color: #ffffff;
  border: 1px solid var(--border-dark);
}

.widget-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-widget-dark .widget-title {
  color: #ffffff;
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.sidebar-plan-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.88rem;
}

.sidebar-plan-name {
  color: #e2e8f0;
  font-weight: 600;
}

.sidebar-plan-price {
  color: #38bdf8;
  font-weight: 700;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-nav-list a {
  font-size: 0.88rem;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

/* ===================================================================
   响应式媒体查询 (360px - 1440px)
   =================================================================== */

@media (max-width: 1080px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .concerns-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .nav-menu, .header-actions {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-title {
    font-size: 2.15rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .concerns-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .article-main-card {
    padding: 28px 20px;
  }
  .article-title-main {
    font-size: 1.65rem;
  }
  .related-articles-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 430px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .hero-title {
    font-size: 1.85rem;
  }
  .section-title {
    font-size: 1.7rem;
  }
  .pricing-card {
    padding: 24px 18px 20px;
  }
  .plan-price-main {
    font-size: 2rem;
  }
  .faq-answer {
    padding-left: 0;
    margin-top: 8px;
  }
}