/* ==========================================================================
   苏菲家宽机场官网 - 样式表 (sufe.homes)
   风格：奢雅温暖纸张质感 (Warm Ivory / Terracotta Rust / Modern Tech Minimal)
   ========================================================================== */

:root {
  --bg-primary: #FAF8F5;
  --bg-secondary: #F3EFEA;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FFFDFB;
  --bg-glass: rgba(255, 255, 255, 0.85);

  --text-main: #1C1917;
  --text-secondary: #57534E;
  --text-muted: #8E877F;
  --text-light: #A8A29E;

  --accent-terracotta: #C34A2C;
  --accent-terracotta-hover: #AB3E23;
  --accent-terracotta-soft: rgba(195, 74, 44, 0.08);
  --accent-terracotta-border: rgba(195, 74, 44, 0.25);

  --accent-gold: #D97706;
  --accent-green: #15803D;
  --accent-green-bg: #DCFCE7;
  --accent-blue: #0284C7;

  --border-subtle: #E8E2D8;
  --border-card: #E4DDD2;

  --shadow-sm: 0 2px 8px rgba(30, 20, 15, 0.04);
  --shadow-md: 0 8px 24px rgba(30, 20, 15, 0.06);
  --shadow-lg: 0 16px 40px rgba(30, 20, 15, 0.08);
  --shadow-hover: 0 20px 48px rgba(195, 74, 44, 0.12);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-pill: 9999px;

  --font-serif: "Noto Serif SC", "Songti SC", "Cinzel", "Playfair Display", Georgia, serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --max-width: 1200px;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  background-image: radial-gradient(rgba(195, 74, 44, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
}

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

ul, ol {
  list-style: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-smooth);
}

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

/* ==========================================================================
   Top Announcement Bar
   ========================================================================== */
.top-announcement {
  background: #1C1917;
  color: #FAF8F5;
  font-size: 0.85rem;
  padding: 8px 16px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  position: relative;
  z-index: 60;
  letter-spacing: 0.02em;
}

.top-announcement a {
  color: #F87171;
  text-decoration: underline;
  margin-left: 6px;
  font-weight: 500;
}

.top-announcement a:hover {
  color: #FFA39E;
}

/* ==========================================================================
   Header & Navigation Bar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 248, 245, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-smooth);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.04em;
}

.brand-icon-wrapper {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-pill);
  background: var(--accent-terracotta-soft);
  border: 1px solid var(--accent-terracotta-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-terracotta);
  flex-shrink: 0;
}

.brand-logo span.highlight {
  color: var(--accent-terracotta);
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-item a {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 4px;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-item a:hover {
  color: var(--accent-terracotta);
}

.nav-item a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-terracotta);
  transition: width 0.3s ease, left 0.3s ease;
}

.nav-item a:hover::after {
  width: 100%;
  left: 0;
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.925rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-smooth);
  white-space: nowrap;
}

.btn-secondary {
  color: var(--text-main);
  background: transparent;
  border: 1px solid var(--border-card);
}

.btn-secondary:hover {
  background: #FFF;
  border-color: var(--text-muted);
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: var(--accent-terracotta);
  color: #FFFFFF;
  border: 1px solid var(--accent-terracotta);
  box-shadow: 0 4px 14px rgba(195, 74, 44, 0.25);
}

.btn-primary:hover {
  background: var(--accent-terracotta-hover);
  border-color: var(--accent-terracotta-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(195, 74, 44, 0.35);
}

.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-main);
  background: none;
  border: none;
}

/* ==========================================================================
   Hero Section with Dynamic Globe
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 70px 0 90px;
  overflow: hidden;
  text-align: center;
}

/* Dynamic Interactive Globe Background */
.hero-canvas-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 900px;
  height: 900px;
  max-width: 95vw;
  max-height: 95vw;
  pointer-events: none;
  z-index: 1;
  opacity: 0.72;
}

.hero-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.hero-badge .ping-dot {
  width: 8px;
  height: 8px;
  background: #22C55E;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
  animation: pulse-ping 2s infinite;
}

@keyframes pulse-ping {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--text-main);
  margin-bottom: 20px;
}

.hero-title .title-accent {
  color: var(--accent-terracotta);
  display: block;
  font-size: 2.25rem;
  margin-top: 10px;
  font-weight: 600;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 50px;
}

.hero-actions .btn {
  padding: 13px 32px;
  font-size: 1.05rem;
}

/* Hero Stats Cards (Inspired by Reference Screenshot 2) */
.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 20px;
  text-align: left;
}

.stat-card {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all var(--transition-smooth);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-terracotta-border);
}

.stat-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1;
}

.stat-num .plus {
  color: var(--accent-terracotta);
  font-size: 1.5rem;
  font-weight: 600;
  margin-left: 2px;
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-terracotta);
}

.stat-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.stat-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Section Headers (Common)
   ========================================================================== */
.section-padding {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-terracotta);
  background: var(--accent-terracotta-soft);
  border: 1px solid var(--accent-terracotta-border);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.35rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Section: 节点延迟与实时状态监控 (Node Status & Latency)
   ========================================================================== */
.nodes-monitor-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.monitor-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 24px;
}

.monitor-status-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--accent-green);
  background: var(--accent-green-bg);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

.status-indicator .dot {
  width: 8px;
  height: 8px;
  background: #15803D;
  border-radius: 50%;
  animation: pulse-ping 1.8s infinite;
}

.monitor-tabs {
  display: flex;
  gap: 8px;
  background: var(--bg-secondary);
  padding: 4px;
  border-radius: var(--radius-pill);
}

.tab-btn {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  transition: all var(--transition-fast);
}

.tab-btn.active {
  background: var(--bg-card);
  color: var(--accent-terracotta);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.refresh-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-card);
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: #FFF;
}

.refresh-btn:hover {
  border-color: var(--accent-terracotta);
  color: var(--accent-terracotta);
}

.nodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 16px;
}

.node-item-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: all var(--transition-smooth);
  position: relative;
}

.node-item-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-terracotta-border);
  box-shadow: var(--shadow-sm);
  background: #FFF;
}

.node-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.node-flag-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.node-flag {
  font-size: 1.4rem;
  line-height: 1;
}

.node-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
}

.node-ping-badge {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.ping-fast {
  background: #DCFCE7;
  color: #15803D;
}

.ping-medium {
  background: #FEF3C7;
  color: #B45309;
}

.node-type-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.775rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--border-card);
}

.node-unlock-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.unlock-pill {
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(195, 74, 44, 0.06);
  color: var(--accent-terracotta);
  border: 1px solid rgba(195, 74, 44, 0.15);
  font-weight: 500;
}

/* ==========================================================================
   Section: 核心优势板块 (Core Advantages - High-End Minimalist)
   ========================================================================== */
.advantages-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: center;
}

.adv-left-box {
  position: relative;
}

.adv-main-heading {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
  margin-bottom: 20px;
}

.adv-main-heading .highlight-trio {
  color: var(--accent-terracotta);
  display: block;
  margin-top: 6px;
}

.adv-lead-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 30px;
  position: relative;
  padding-left: 18px;
  border-left: 3px solid var(--accent-terracotta);
}

.adv-decor-illustration {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 16px;
}

.adv-decor-illustration .icon-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-terracotta-soft);
  color: var(--accent-terracotta);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.adv-right-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.advantage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
}

.advantage-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-terracotta-border);
  box-shadow: var(--shadow-md);
}

.adv-number-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.775rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 8px;
}

.adv-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--accent-terracotta-soft);
  border: 1px solid var(--accent-terracotta-border);
  color: var(--accent-terracotta);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.adv-content h4 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.adv-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==========================================================================
   Section: 套餐价格板块 (Pricing Plans)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border: 2px solid var(--accent-terracotta);
  background: #FFFDFB;
  box-shadow: 0 12px 36px rgba(195, 74, 44, 0.12);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-5px);
}

.featured-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-terracotta);
  color: #FFF;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 10px rgba(195, 74, 44, 0.3);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.plan-name {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 42px;
}

.plan-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 24px;
}

.currency {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent-terracotta);
}

.price-val {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
}

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

.plan-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.925rem;
  color: var(--text-secondary);
}

.check-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #DCFCE7;
  color: #15803D;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.plan-btn {
  width: 100%;
  padding: 13px;
  font-size: 1rem;
}

.plan-guarantee {
  text-align: center;
  font-size: 0.775rem;
  color: var(--text-light);
  margin-top: 12px;
}

/* ==========================================================================
   Section: 知识库与教程板块 (Knowledge Base & SEO Articles)
   ========================================================================== */
.kb-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.kb-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-smooth);
  position: relative;
}

.kb-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-terracotta-border);
  box-shadow: var(--shadow-md);
}

.kb-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.775rem;
}

.kb-category {
  color: var(--accent-terracotta);
  background: var(--accent-terracotta-soft);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-weight: 600;
}

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

.kb-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 12px;
}

.kb-title a:hover {
  color: var(--accent-terracotta);
}

.kb-excerpt {
  font-size: 0.885rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kb-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.kb-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-terracotta);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

.kb-tag-list {
  display: flex;
  gap: 6px;
}

.kb-mini-tag {
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ==========================================================================
   Section: 用户评价板块 (Testimonials)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-smooth);
}

.review-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-subtle);
}

.review-stars {
  color: #F59E0B;
  font-size: 1rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-quote {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 22px;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--accent-terracotta);
  font-size: 1.05rem;
}

.author-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

.author-tag {
  font-size: 0.775rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.verified-icon {
  color: #15803D;
  font-size: 0.8rem;
}

/* ==========================================================================
   Section: 常见问题答疑 (FAQ Accordion)
   ========================================================================== */
.faq-container {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  background: transparent;
  cursor: pointer;
}

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

.faq-icon {
  font-size: 1.25rem;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--accent-terracotta);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px 24px;
}

/* ==========================================================================
   Bottom Conversion Banner
   ========================================================================== */
.bottom-cta-box {
  background: linear-gradient(135deg, #1C1917 0%, #2E2522 100%);
  color: #FAF8F5;
  border-radius: var(--radius-xl);
  padding: 60px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-bottom: 70px;
  box-shadow: var(--shadow-lg);
}

.bottom-cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(circle, rgba(195, 74, 44, 0.35) 0%, transparent 70%);
  filter: blur(50px);
  pointer-events: none;
}

.bottom-cta-title {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
}

.bottom-cta-desc {
  font-size: 1.1rem;
  color: #D6D3D1;
  max-width: 620px;
  margin: 0 auto 36px;
  position: relative;
  z-index: 2;
}

.bottom-cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  position: relative;
  z-index: 2;
}

.bottom-cta-actions .btn-primary {
  padding: 14px 36px;
  font-size: 1.05rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
  color: var(--text-secondary);
}

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

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 320px;
  line-height: 1.6;
}

.footer-col h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}

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

.footer-links a {
  font-size: 0.885rem;
  color: var(--text-secondary);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-card);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.825rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .advantages-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-5px);
  }
  .kb-grid, .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .top-announcement {
    font-size: 0.775rem;
    padding: 6px 12px;
  }
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: #FFF;
    border-bottom: 1px solid var(--border-card);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    display: none;
    box-shadow: var(--shadow-lg);
  }
  .nav-menu.open {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-title .title-accent {
    font-size: 1.6rem;
  }
  .hero-stats-grid {
    grid-template-columns: 1fr;
  }
  .monitor-top-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .monitor-tabs {
    width: 100%;
    overflow-x: auto;
  }
  .kb-grid, .reviews-grid {
    grid-template-columns: 1fr;
  }
  .bottom-cta-box {
    padding: 40px 24px;
  }
  .bottom-cta-title {
    font-size: 2rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}