/* ==========================================================================
   坨坨云 (Tuotuoyun.cyou) - 方案十六：高质感磨砂微阴影设计系统
   ========================================================================== */

:root {
  --bg-main: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.78);
  --bg-card-hover: rgba(255, 255, 255, 0.92);
  --border-light: rgba(226, 232, 240, 0.8);
  --border-glow: rgba(59, 130, 246, 0.3);
  
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --accent-cyan: #06b6d4;
  --accent-purple: #7c3aed;
  --success: #10b981;
  --warning: #f59e0b;
  
  --text-dark: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 12px 32px -8px rgba(15, 23, 42, 0.06), 0 4px 12px -2px rgba(15, 23, 42, 0.03);
  --shadow-lg: 0 24px 48px -12px rgba(37, 99, 235, 0.1), 0 8px 20px -4px rgba(15, 23, 42, 0.04);
  
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.03) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(124, 58, 237, 0.03) 0%, transparent 40%);
}

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

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

/* 容器定义 */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* 微阴影磨砂玻璃卡片 */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: var(--shadow-lg);
}

/* 顶部导航栏 Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  padding: 0.85rem 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--text-dark);
}

.brand-logo img {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
}

.brand-badge {
  font-size: 0.75rem;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
}

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* 核心按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #1d4ed8 100%);
  color: #ffffff;
  box-shadow: 0 8px 20px -4px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -4px rgba(37, 99, 235, 0.5);
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.9);
  color: var(--text-dark);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: #ffffff;
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -4px rgba(15, 23, 42, 0.08);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--border-glow);
}

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

/* ==========================================================================
   【核心任务 1】杂志刊物 (Magazine/Editorial) Hero 区域
   ========================================================================== */
.hero-editorial {
  padding: 4rem 0 3.5rem;
  position: relative;
}

/* 顶部全屏横跨标语 Banner */
.editorial-headline-strip {
  text-align: center;
  margin-bottom: 2.5rem;
  padding: 1.25rem;
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.04), rgba(6, 182, 212, 0.08), rgba(124, 58, 237, 0.04));
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  border-radius: var(--radius-md);
}

.editorial-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  background: #ffffff;
  padding: 0.25rem 0.85rem;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0.75rem;
}

.editorial-headline-title {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-dark);
  letter-spacing: -0.03em;
}

.editorial-headline-title span {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 杂志 3 栏网格 (Asymmetric 3-Column Magazine Grid) */
.hero-magazine-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr 1fr;
  gap: 1.75rem;
  align-items: stretch;
}

/* 左栏：品牌优势快讯 */
.col-left-advantages {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.advantage-item-card {
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.advantage-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.advantage-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.advantage-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 中栏：主推卡片与 3 个响应式按钮 */
.col-center-main {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 2px solid var(--border-glow);
  position: relative;
  overflow: hidden;
}

.col-center-main::before {
  content: "RECOMMENDED";
  position: absolute;
  top: 12px;
  right: -30px;
  background: var(--primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 0.2rem 2rem;
  transform: rotate(45deg);
  letter-spacing: 0.05em;
}

.main-hero-body {
  margin-bottom: 1.75rem;
}

.main-hero-body h2 {
  font-size: 1.65rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.main-hero-body p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.feature-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.feature-pill {
  font-size: 0.78rem;
  padding: 0.25rem 0.65rem;
  background: rgba(15, 23, 42, 0.05);
  border-radius: var(--radius-sm);
  color: var(--text-dark);
  font-weight: 600;
}

/* 3 个并排按钮区域 Hero Buttons Container */
.hero-actions-container {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.hero-buttons-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  width: 100%;
}

.hero-buttons-row .btn {
  flex: 1 1 calc(33.333% - 0.75rem);
  min-width: 160px;
  text-align: center;
  padding: 0.85rem 0.75rem;
  font-size: 0.88rem;
}

.btn-review {
  background: rgba(255, 255, 255, 0.9);
  color: var(--text-dark);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.btn-review:hover {
  background: #ffffff;
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -4px rgba(15, 23, 42, 0.08);
}

/* 右栏：最新测评与文章快讯 */
.col-right-feed {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.feed-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 1rem;
}

.feed-header h3 {
  font-size: 1.05rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.feed-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  list-style: none;
}

.feed-item a {
  display: block;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(226, 232, 240, 0.6);
}

.feed-item a:hover {
  background: #ffffff;
  border-color: var(--primary);
  transform: translateX(4px);
}

.feed-item-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.4;
  margin-bottom: 0.25rem;
}

.feed-item-meta {
  font-size: 0.75rem;
  color: var(--text-light);
  display: flex;
  justify-content: space-between;
}

/* 设备兼容徽章 */
.device-badges-bar {
  margin-top: 2.5rem;
  padding: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.device-badges-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-muted);
}

.device-badges-list {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.device-badge-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-dark);
  background: #ffffff;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

/* ==========================================================================
   非对称板块边距 & 全局标题段落
   ========================================================================== */
.section-margin-asymmetric {
  padding-top: 5.5rem;
  padding-bottom: 3.5rem;
}

.section-margin-compact {
  padding-top: 3.5rem;
  padding-bottom: 4.5rem;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}

.section-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

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

/* ==========================================================================
   【核心任务 1】价格区域：[横向通栏大卡片 / Tab标签切换展示]
   ========================================================================== */
.pricing-section {
  background: linear-gradient(180deg, rgba(248, 250, 252, 0) 0%, rgba(239, 246, 255, 0.5) 50%, rgba(248, 250, 252, 0) 100%);
}

/* Segmented Tab Controls 分段式切换控制器 */
.pricing-tabs-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.pricing-tabs {
  display: inline-flex;
  background: rgba(226, 232, 240, 0.6);
  padding: 0.35rem;
  border-radius: var(--radius-pill);
  gap: 0.35rem;
  border: 1px solid var(--border-light);
}

.tab-btn {
  padding: 0.6rem 1.6rem;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tab-btn.active {
  background: #ffffff;
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

.tab-discount-tag {
  font-size: 0.7rem;
  background: var(--warning);
  color: #fff;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

/* 横向通栏大卡片容器 Horizontal Full-Width Cards Container */
.pricing-horizontal-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.horizontal-price-card {
  display: grid;
  grid-template-columns: 240px 1fr 220px;
  align-items: center;
  padding: 1.75rem 2rem;
  gap: 2rem;
  position: relative;
}

.horizontal-price-card.popular {
  border: 2px solid var(--primary);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 16px 36px -8px rgba(37, 99, 235, 0.15);
}

.card-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-purple) 100%);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.8rem;
  border-radius: var(--radius-pill);
}

.price-col-main {
  border-right: 1px solid var(--border-light);
  padding-right: 1.5rem;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 0.35rem;
}

.plan-desc {
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.price-currency {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  letter-spacing: -0.03em;
}

.price-period {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* 卡片特征网格 */
.price-col-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem 1.5rem;
}

.feature-spec-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.feature-spec-item svg {
  color: var(--success);
  flex-shrink: 0;
}

/* 操作与协议区域 */
.price-col-action {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.85rem;
  border-left: 1px solid var(--border-light);
  padding-left: 1.5rem;
  text-align: center;
}

.protocol-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: center;
}

.protocol-tag {
  font-size: 0.72rem;
  background: rgba(15, 23, 42, 0.04);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  color: var(--text-muted);
}

.money-back-guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--success);
  font-weight: 600;
  margin-top: 1.5rem;
}

/* ==========================================================================
   功能亮点 & 网络表现
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.feature-box {
  padding: 2rem;
}

.feature-box-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary-light) 0%, rgba(6, 182, 212, 0.1) 100%);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-box h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.feature-box p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   【核心任务 1】用户评价与 FAQ 模块
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.testimonial-card {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.avatar-circle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.user-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.user-info span {
  font-size: 0.78rem;
  color: var(--text-light);
}

.rating-stars {
  color: #f59e0b;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

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

/* FAQ 折叠面板 */
.faq-accordion-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.35rem 1.75rem;
  background: var(--bg-card);
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.faq-question:hover {
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary);
}

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-pill);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  background: rgba(255, 255, 255, 0.6);
  padding: 0 1.75rem;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 1.25rem 1.75rem;
  border-top: 1px solid var(--border-light);
}

.faq-answer p {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 文章落地页基础排版 (Articles Styling) */
.article-page {
  padding: 4rem 0 5rem;
}

.article-container {
  max-width: 860px;
  margin: 0 auto;
  background: #ffffff;
  padding: 3rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}

.article-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.article-category {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.article-title {
  font-size: 2.1rem;
  font-weight: 900;
  line-height: 1.3;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-light);
}

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

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-dark);
  margin: 2rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--primary-light);
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  margin: 1.5rem 0 0.75rem;
}

.article-body p {
  margin-bottom: 1.25rem;
}

.article-body ul, .article-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-callout {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-sm);
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.article-internal-links {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
  background: var(--bg-main);
  padding: 1.5rem;
  border-radius: var(--radius-md);
}

.article-internal-links h4 {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 0.85rem;
}

.internal-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.internal-links-grid a {
  font-size: 0.9rem;
  color: var(--primary);
  font-weight: 600;
}

.internal-links-grid a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   【核心任务 2】页脚 PBN 权重输血管道 (Footer & PBN Dofollow Links)
   ========================================================================== */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 4rem 0 2rem;
  margin-top: 5rem;
  border-top: 1px solid #1e293b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.6;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col a {
  font-size: 0.88rem;
  color: #94a3b8;
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #1e293b;
  text-align: center;
}

.copyright-text {
  font-size: 0.82rem;
  color: #64748b;
  margin-bottom: 1rem;
}

/* 友情链接 / PBN 权重传输管道 (低调、美观、小字号、水平居中) */
.pbn-links-area {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  font-size: 0.82rem;
  color: #64748b;
  margin-top: 0.75rem;
}

.pbn-links-area span {
  font-weight: 600;
  color: #475569;
}

.pbn-links-area a {
  color: #64748b;
  text-decoration: none;
  transition: color 0.2s ease;
  font-weight: 500;
}

.pbn-links-area a:hover {
  color: #38bdf8;
  text-decoration: underline;
}

/* 悬浮帮助挂件 */
.floating-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
}

.floating-btn {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-purple) 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.4);
  cursor: pointer;
  border: 2px solid rgba(255, 255, 255, 0.8);
  transition: var(--transition);
}

.floating-btn:hover {
  transform: scale(1.08) translateY(-2px);
}

/* ==========================================================================
   响应式适配 (Responsive Styles)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-magazine-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .horizontal-price-card {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding: 1.5rem;
  }

  .price-col-main, .price-col-action {
    border: none;
    padding: 0;
  }

  .price-col-action {
    border-top: 1px solid var(--border-light);
    padding-top: 1.25rem;
  }

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

@media (max-width: 768px) {
  .editorial-headline-title {
    font-size: 1.6rem;
  }

  .nav-links {
    display: none;
  }

  /* 3个按钮在手机窄屏下的优雅折行与堆叠 */
  .hero-buttons-row {
    flex-direction: column;
    gap: 0.65rem;
  }

  .hero-buttons-row .btn {
    width: 100%;
    min-width: 100%;
  }

  .features-grid, .testimonials-grid, .internal-links-grid {
    grid-template-columns: 1fr;
  }

  .price-col-features {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .article-container {
    padding: 1.5rem;
  }
}