/* 库洛米机场 - 纯静态落地页样式系统 (Static Landing Page Style System) */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

/* ==========================================================================
   一、主题颜色变量定义 (Theme Color Variables)
   ========================================================================== */

/* 默认主题: 库洛米朋克紫 (Kuromi Cyber Purple) */
:root,
[data-theme="kuromi-purple"] {
  --bg-main: #0c0814;
  --bg-card: rgba(22, 16, 38, 0.75);
  --bg-card-hover: rgba(35, 25, 60, 0.9);
  --bg-nav: rgba(12, 8, 20, 0.85);
  
  --primary: #a855f7;
  --primary-glow: rgba(168, 85, 247, 0.4);
  --secondary: #ec4899;
  --secondary-glow: rgba(236, 72, 153, 0.35);
  --accent: #f59e0b;
  --accent-glow: rgba(245, 158, 11, 0.4);
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  --border-color: rgba(168, 85, 247, 0.2);
  --border-highlight: rgba(236, 72, 153, 0.5);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
  
  --badge-bg: rgba(168, 85, 247, 0.15);
  --badge-text: #d8b4fe;
  
  --shadow-glow: 0 0 25px rgba(168, 85, 247, 0.25);
  --hero-gradient: linear-gradient(135deg, #a855f7 0%, #ec4899 50%, #f59e0b 100%);
}

/* 深空暗夜蓝 (Deep Space Midnight) */
[data-theme="midnight-blue"] {
  --bg-main: #060d1a;
  --bg-card: rgba(12, 25, 48, 0.75);
  --bg-card-hover: rgba(18, 38, 72, 0.9);
  --bg-nav: rgba(6, 13, 26, 0.85);
  
  --primary: #38bdf8;
  --primary-glow: rgba(56, 189, 248, 0.4);
  --secondary: #818cf8;
  --secondary-glow: rgba(129, 140, 248, 0.35);
  --accent: #34d399;
  --accent-glow: rgba(52, 211, 153, 0.4);
  
  --text-main: #f0f9ff;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --border-color: rgba(56, 189, 248, 0.2);
  --border-highlight: rgba(129, 140, 248, 0.5);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
  
  --badge-bg: rgba(56, 189, 248, 0.15);
  --badge-text: #bae6fd;
  
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.25);
  --hero-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #34d399 100%);
}

/* 黑客帝国家 (Matrix Emerald) */
[data-theme="matrix-emerald"] {
  --bg-main: #05120b;
  --bg-card: rgba(10, 31, 19, 0.75);
  --bg-card-hover: rgba(15, 48, 29, 0.9);
  --bg-nav: rgba(5, 18, 11, 0.85);
  
  --primary: #10b981;
  --primary-glow: rgba(16, 185, 129, 0.4);
  --secondary: #06b6d4;
  --secondary-glow: rgba(6, 182, 212, 0.35);
  --accent: #84cc16;
  --accent-glow: rgba(132, 204, 22, 0.4);
  
  --text-main: #ecfdf5;
  --text-muted: #91c7b1;
  --text-dim: #4d7a66;
  
  --border-color: rgba(16, 185, 129, 0.25);
  --border-highlight: rgba(132, 204, 22, 0.5);
  --glass-border: 1px solid rgba(16, 185, 129, 0.15);
  
  --badge-bg: rgba(16, 185, 129, 0.15);
  --badge-text: #a7f3d0;
  
  --shadow-glow: 0 0 25px rgba(16, 185, 129, 0.3);
  --hero-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 50%, #84cc16 100%);
}

/* 霓虹落日粉 (Synthwave Sunset) */
[data-theme="synthwave-sunset"] {
  --bg-main: #140810;
  --bg-card: rgba(38, 16, 30, 0.75);
  --bg-card-hover: rgba(60, 25, 47, 0.9);
  --bg-nav: rgba(20, 8, 16, 0.85);
  
  --primary: #f43f5e;
  --primary-glow: rgba(244, 63, 94, 0.4);
  --secondary: #fb923c;
  --secondary-glow: rgba(251, 146, 60, 0.35);
  --accent: #eab308;
  --accent-glow: rgba(234, 179, 8, 0.4);
  
  --text-main: #fff1f2;
  --text-muted: #fda4af;
  --text-dim: #9f1239;
  
  --border-color: rgba(244, 63, 94, 0.25);
  --border-highlight: rgba(251, 146, 60, 0.5);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
  
  --badge-bg: rgba(244, 63, 94, 0.15);
  --badge-text: #fecdd3;
  
  --shadow-glow: 0 0 25px rgba(244, 63, 94, 0.3);
  --hero-gradient: linear-gradient(135deg, #f43f5e 0%, #fb923c 50%, #eab308 100%);
}

/* ==========================================================================
   二、基础重置与排版 (Global Reset & Typography)
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  transition: background-color 0.4s ease, color 0.4s ease;
}

a {
  color: inherit;
  text-decoration: none;
}

/* 动态 Canvas 背景 */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  background: var(--badge-bg);
  color: var(--badge-text);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  margin-bottom: 1rem;
  box-shadow: 0 0 15px var(--primary-glow);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: #ffffff;
}

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

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 650px;
  margin: 0 auto;
}

/* 按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--hero-gradient);
  color: #ffffff;
  box-shadow: 0 10px 25px -5px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 15px 35px -5px var(--secondary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* ==========================================================================
   三、通栏公告 & 导航栏 (Banner & Navigation)
   ========================================================================== */
.top-marquee-banner {
  background: linear-gradient(90deg, rgba(168,85,247,0.2) 0%, rgba(236,72,153,0.2) 50%, rgba(245,158,11,0.2) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  text-align: center;
  color: #ffffff;
  backdrop-filter: blur(10px);
  position: relative;
  z-index: 101;
}

.top-marquee-banner strong {
  color: var(--accent);
  margin-right: 0.5rem;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: var(--glass-border);
  transition: all 0.3s ease;
}

.navbar .nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: var(--hero-gradient);
  border-radius: 0.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 0 15px var(--primary-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

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

.theme-selector {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 0.75rem;
  padding: 0.25rem;
  border: var(--glass-border);
}

.theme-btn {
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
  opacity: 0.6;
}

.theme-btn:hover,
.theme-btn.active {
  opacity: 1;
  transform: scale(1.15);
}

.theme-btn.t-purple { background: linear-gradient(135deg, #a855f7, #ec4899); }
.theme-btn.t-blue { background: linear-gradient(135deg, #38bdf8, #818cf8); }
.theme-btn.t-green { background: linear-gradient(135deg, #10b981, #84cc16); }
.theme-btn.t-pink { background: linear-gradient(135deg, #f43f5e, #fb923c); }

/* ==========================================================================
   四、Hero 首屏 (Hero Section)
   ========================================================================== */
.hero-section {
  padding: 6rem 0 4rem;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
}

.hero-badge .sparkle {
  color: var(--accent);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  max-width: 950px;
  margin-left: auto;
  margin-right: auto;
}

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

.hero-description {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 750px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  background: var(--bg-card);
  border-radius: 1.25rem;
  border: var(--glass-border);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-glow);
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  background: var(--hero-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ==========================================================================
   五、节点状态 (Node Status)
   ========================================================================== */
.nodes-section {
  padding: 5rem 0;
}

.nodes-control-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.node-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.45rem 1rem;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: var(--glass-border);
  color: var(--text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.btn-ping-test {
  padding: 0.5rem 1.2rem;
  font-size: 0.875rem;
  border-radius: 0.5rem;
}

.nodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.25rem;
}

.node-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: 1rem;
  padding: 1.25rem;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.node-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: 0 10px 25px -5px var(--primary-glow);
}

.node-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.node-flag-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
}

.node-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-weight: 600;
}

.node-status-badge.online {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.node-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  font-size: 0.825rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.node-ping-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-family: monospace;
}

.ping-val {
  font-weight: 700;
  color: #34d399;
}
.ping-val.fast { color: #34d399; }
.ping-val.medium { color: #f59e0b; }

.node-protocol-tag {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.15rem 0.5rem;
  border-radius: 0.25rem;
  color: var(--text-muted);
}

/* ==========================================================================
   六、套餐价格 & 核心优势 (Pricing & Advantages)
   ========================================================================== */
.pricing-section {
  padding: 5rem 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: 1.25rem;
  padding: 2rem 1.5rem;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: 0 15px 35px -10px var(--primary-glow);
}

.pricing-card.popular {
  border: 2px solid var(--primary);
  box-shadow: 0 0 30px var(--primary-glow);
}

.popular-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--hero-gradient);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.85rem;
  border-radius: 9999px;
  box-shadow: 0 5px 15px var(--secondary-glow);
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.plan-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  min-height: 40px;
}

.plan-price-box {
  margin-bottom: 1.75rem;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.price-currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.price-amount {
  font-size: 2.75rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.price-period {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-main);
  margin-bottom: 0.85rem;
}

.plan-features li .check-icon {
  color: var(--primary);
  font-weight: 800;
}

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

.advantages-section {
  padding: 5rem 0;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.advantage-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: 1.25rem;
  padding: 2rem;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.advantage-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.adv-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 1rem;
  background: var(--badge-bg);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow);
}

.adv-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.adv-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   七、FAQ & 知识库与教程 (FAQ & Knowledge Base)
   ========================================================================== */
.faq-section {
  padding: 5rem 0;
}

.faq-accordion {
  max-width: 850px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: 1rem;
  overflow: hidden;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.faq-question {
  padding: 1.25rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.25rem;
}

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

.tutorials-section {
  padding: 5rem 0;
}

.tutorials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.75rem;
}

.tutorial-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: 1.25rem;
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.tutorial-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: 0 10px 30px -5px var(--primary-glow);
}

.t-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.t-category-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 0.4rem;
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--border-color);
}

.t-read-time {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.t-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.t-card-excerpt {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.t-card-keywords {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.t-kw-tag {
  font-size: 0.725rem;
  padding: 0.15rem 0.45rem;
  border-radius: 0.25rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
}

.t-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.9rem;
  transition: gap 0.2s ease;
}

.t-card-link:hover {
  gap: 0.75rem;
  color: var(--secondary);
}

/* ==========================================================================
   八、用户评价 (Testimonials)
   ========================================================================== */
.testimonials-section {
  padding: 5rem 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.testimonial-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: 1.25rem;
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-color);
  box-shadow: var(--shadow-glow);
}

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

.user-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--hero-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 1.1rem;
  box-shadow: 0 0 12px var(--primary-glow);
}

.user-info .user-name {
  font-weight: 700;
  color: #ffffff;
  font-size: 1rem;
}

.user-info .user-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.star-rating {
  color: #f59e0b;
  font-size: 0.9rem;
  margin-bottom: 0.85rem;
}

.testimonial-text {
  font-size: 0.925rem;
  color: var(--text-main);
  line-height: 1.6;
}

/* ==========================================================================
   九、底部与页脚 (Bottom CTA & Footer)
   ========================================================================== */
.bottom-cta-banner {
  margin: 4rem auto 0;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, rgba(168,85,247,0.15) 0%, rgba(236,72,153,0.15) 100%);
  border: 1px solid var(--border-color);
  border-radius: 2rem;
  text-align: center;
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

.bottom-cta-banner h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 1rem;
}

.bottom-cta-banner p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.footer {
  border-top: var(--glass-border);
  padding: 3.5rem 0 2rem;
  margin-top: 5rem;
  background: rgba(0, 0, 0, 0.4);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 320px;
}

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

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
}

.floating-widgets {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 99;
}

.floating-btn {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--bg-card);
  border: var(--glass-border);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.floating-btn:hover {
  transform: translateY(-3px) scale(1.05);
  border-color: var(--primary);
  color: var(--primary);
}

/* 文章详情页专用样式 */
.article-page-body {
  padding-top: 3rem;
  padding-bottom: 5rem;
}

.article-header {
  margin-bottom: 2.5rem;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

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

.article-title-main {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.25;
  color: #ffffff;
  margin-bottom: 1.25rem;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  border-bottom: var(--glass-border);
  padding-bottom: 1.25rem;
}

.article-content-wrapper {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: 1.5rem;
  padding: 3rem;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-glow);
  font-size: 1.05rem;
  line-height: 1.8;
  color: #e5e7eb;
}

.article-content-wrapper h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: #ffffff;
  margin: 2.5rem 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-content-wrapper h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--badge-text);
  margin: 1.75rem 0 1rem;
}

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

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

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

.article-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  font-size: 0.925rem;
}

.article-table th,
.article-table td {
  padding: 0.85rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: left;
}

.article-table th {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  font-weight: 700;
}

.article-table td {
  background: rgba(0, 0, 0, 0.2);
}

.article-cta-box {
  margin: 3rem 0 1rem;
  padding: 2.5rem 2rem;
  background: linear-gradient(135deg, rgba(168,85,247,0.2) 0%, rgba(236,72,153,0.2) 100%);
  border: 1px solid var(--border-color);
  border-radius: 1.25rem;
  text-align: center;
}

.article-cta-box h3 {
  font-size: 1.5rem;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.article-cta-box p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

@media (max-width: 992px) {
  .hero-title { font-size: 2.75rem; }
  .nav-links { display: none; }
  .footer-container { grid-template-columns: 1fr 1fr; }
  .article-content-wrapper { padding: 1.75rem; }
}

@media (max-width: 640px) {
  .hero-title { font-size: 2.15rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-container { grid-template-columns: 1fr; }
}