/* ===================================================================
   糖果云 (CandyCloud) - 全球极速网络加速与节点自动贩售系统
   纯原生 CSS，无第三方框架，追求极致轻量、秒开与高质感物理机甲风交互
   =================================================================== */

:root {
  /* 白天模式调色板 (默认) */
  --bg-primary: #f4f6fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #edf2f7;
  --bg-glass: rgba(255, 255, 255, 0.88);
  --bg-glass-card: rgba(255, 255, 255, 0.8);
  --border-color: #e2e8f0;
  --border-focus: #6366f1;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: rgba(79, 70, 229, 0.1);
  --accent: #ec4899;
  --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #db2777 100%);
  --accent-gradient-hover: linear-gradient(135deg, #4338ca 0%, #6d28d9 50%, #be185d 100%);
  
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.06), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 20px 30px -10px rgba(79, 70, 229, 0.16), 0 10px 15px -5px rgba(0, 0, 0, 0.05);
  --badge-bg: #e0e7ff;
  --badge-text: #3730a3;
  --tag-bg: #f1f5f9;
  --tag-border: #cbd5e1;

  --speed-fast: #10b981;
  --speed-fast-bg: rgba(16, 185, 129, 0.12);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --header-height: 72px;
  --transition-speed: 0.3s;

  /* 自动贩卖机物理外壳材质参数 (Matte White Facade #F8F9FA) */
  --kiosk-facade-bg: #f8f9fa;
  --kiosk-bezel: #d1d5db;
  --kiosk-chamber-bg: #0f172a;
  --kiosk-chassis-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(0, 0, 0, 0.06);
  --key-bg: #f3f4f6;
  --key-border: #d1d5db;
  --key-shadow: 0 5px 0 #9ca3af, 0 8px 12px rgba(0, 0, 0, 0.15);
  --key-active-shadow: 0 1px 0 #9ca3af, 0 2px 4px rgba(0, 0, 0, 0.1);
  --led-screen-bg: #07170e;
  --led-glow-color: #10b981;
}

[data-theme="dark"] {
  /* 夜间模式调色板 */
  --bg-primary: #0a0d14;
  --bg-secondary: #111726;
  --bg-tertiary: #192237;
  --bg-glass: rgba(17, 23, 38, 0.9);
  --bg-glass-card: rgba(25, 34, 55, 0.7);
  --border-color: #27354f;
  --border-focus: #818cf8;

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;

  --primary: #818cf8;
  --primary-hover: #6366f1;
  --primary-light: rgba(129, 140, 248, 0.18);
  --accent: #f472b6;
  --accent-gradient: linear-gradient(135deg, #818cf8 0%, #a855f7 50%, #f472b6 100%);
  --accent-gradient-hover: linear-gradient(135deg, #6366f1 0%, #9333ea 50%, #ec4899 100%);

  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.6), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --card-shadow-hover: 0 20px 35px -10px rgba(129, 140, 248, 0.3), 0 10px 15px -5px rgba(0, 0, 0, 0.4);
  --badge-bg: rgba(99, 102, 241, 0.25);
  --badge-text: #c7d2fe;
  --tag-bg: #1e293b;
  --tag-border: #334155;

  --speed-fast: #34d399;
  --speed-fast-bg: rgba(52, 211, 153, 0.2);

  /* 夜间模式贩卖机机甲外壳 */
  --kiosk-facade-bg: #151d30;
  --kiosk-bezel: #283753;
  --kiosk-chamber-bg: #070b14;
  --kiosk-chassis-shadow: 0 25px 60px -10px rgba(0, 0, 0, 0.8), 0 0 0 1px #283753;
  --key-bg: #1e293b;
  --key-border: #334155;
  --key-shadow: 0 5px 0 #0f172a, 0 8px 12px rgba(0, 0, 0, 0.5);
  --key-active-shadow: 0 1px 0 #0f172a, 0 2px 4px rgba(0, 0, 0, 0.4);
  --led-screen-bg: #031208;
  --led-glow-color: #34d399;
}

/* 基础重置与平滑滚动 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ===================================================================
   页眉与导航目录 (包含首页、各板块锚点与推荐资讯，平滑过渡动态效果)
   =================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-gradient);
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
  color: #fff;
  transition: transform 0.3s ease;
}

.brand-logo:hover .brand-icon {
  transform: rotate(10deg) scale(1.05);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  padding: 8px 4px;
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
  transform: translateY(-1px);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2.5px;
  background: var(--accent-gradient);
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 4px;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

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

/* 昼夜模式切换按钮：精致半透明无粗糙emoji，平滑自然过渡 */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-speed) ease;
  position: relative;
  overflow: hidden;
}

.theme-toggle-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.sun-icon {
  display: block;
  opacity: 1;
}

.moon-icon {
  display: none;
  opacity: 0;
}

[data-theme="dark"] .sun-icon {
  display: none;
  opacity: 0;
}

[data-theme="dark"] .moon-icon {
  display: block;
  opacity: 1;
}

.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
}

/* CTA 呼吁性按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(79, 70, 229, 0.35);
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(79, 70, 229, 0.45);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.05rem;
  border-radius: var(--radius-full);
}

.btn-block {
  width: 100%;
}

/* ===================================================================
   主视觉区 (Headline + 副标题 + 简介)
   =================================================================== */
.hero-section {
  position: relative;
  padding: 64px 0 70px;
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 450px;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.16) 0%, rgba(219, 39, 119, 0.1) 40%, transparent 70%);
  filter: blur(70px);
  pointer-events: none;
  z-index: 0;
}

.hero-header-box {
  text-align: center;
  max-width: 880px;
  margin: 0 auto 48px;
  position: relative;
  z-index: 1;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: var(--badge-bg);
  color: var(--badge-text);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
  border: 1px solid rgba(79, 70, 229, 0.2);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--speed-fast);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-ring 1.8s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-size: 3.3rem;
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.hero-subtitle {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.hero-intro {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto 30px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===================================================================
   UI 核心创新：交互式物理贩卖机机甲外壳 (Vending Machine Kiosk)
   =================================================================== */
.vending-kiosk-wrapper {
  max-width: 1040px;
  margin: 40px auto 0;
  position: relative;
  z-index: 2;
}

.vending-kiosk {
  background: var(--kiosk-facade-bg);
  border: 2px solid var(--kiosk-bezel);
  border-radius: 24px;
  box-shadow: var(--kiosk-chassis-shadow);
  padding: 24px 28px 30px;
  position: relative;
  transition: all var(--transition-speed) ease;
}

.kiosk-top-bezel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 2px dashed var(--kiosk-bezel);
}

.bezel-screws {
  display: flex;
  gap: 8px;
}

.screw-rivet {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #9ca3af;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.4), 0 1px 0 rgba(255,255,255,0.8);
  position: relative;
}

.screw-rivet::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 2px;
  right: 2px;
  height: 1px;
  background: #4b5563;
  transform: translateY(-50%) rotate(45deg);
}

.kiosk-brand-badge {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.kiosk-status-led {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--speed-fast);
}

.kiosk-status-led::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--speed-fast);
  box-shadow: 0 0 8px var(--speed-fast);
}

/* 巨幅钢化玻璃展示橱窗 (Tempered Glass Chamber) */
.glass-chamber {
  position: relative;
  background: var(--kiosk-chamber-bg);
  border: 3px solid #334155;
  border-radius: 16px;
  padding: 24px 20px 20px;
  overflow: hidden;
  box-shadow: inset 0 10px 30px rgba(0, 0, 0, 0.7);
}

.glass-glare {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(125deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.03) 25%, transparent 40%, rgba(255, 255, 255, 0.08) 70%, transparent 100%);
  pointer-events: none;
  z-index: 5;
}

.conveyor-shelf {
  position: relative;
  z-index: 2;
}

.shelf-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #94a3b8;
  font-size: 0.78rem;
  font-family: monospace;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  padding-bottom: 6px;
}

/* 几何糖果包裹节点网格 (Geometric Candy Packages) */
.candy-rack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.candy-package {
  background: rgba(30, 41, 59, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 14px;
  padding: 16px;
  cursor: pointer;
  position: relative;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.candy-package:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.5);
}

.candy-package.selected {
  border-color: #38bdf8;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
}

.package-code-tag {
  align-self: flex-start;
  padding: 2px 8px;
  background: #0f172a;
  border: 1px solid #475569;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.78rem;
  font-weight: 800;
  color: #f8fafc;
  margin-bottom: 10px;
}

.candy-prism {
  width: 100%;
  height: 52px;
  border-radius: 8px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.05em;
  font-size: 0.88rem;
  box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.4), 0 4px 10px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.candy-prism::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 8px 8px 0 0;
}

.candy-prism.peach { background: linear-gradient(135deg, #ff7e5f 0%, #feb47b 100%); }
.candy-prism.mint { background: linear-gradient(135deg, #00b09b 0%, #96c93d 100%); }
.candy-prism.grape { background: linear-gradient(135deg, #8e2de2 0%, #4a00e0 100%); }
.candy-prism.berry { background: linear-gradient(135deg, #2b5876 0%, #4e4376 100%); }
.candy-prism.earl { background: linear-gradient(135deg, #f7971e 0%, #ffd200 100%); color: #1e293b; }
.candy-prism.currant { background: linear-gradient(135deg, #654ea3 0%, #eaafc8 100%); }

.package-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: #cbd5e1;
}

.package-ping {
  color: #34d399;
  font-weight: 700;
  font-family: monospace;
}

.package-load {
  font-size: 0.75rem;
  color: #94a3b8;
}

.conveyor-track {
  height: 12px;
  background: repeating-linear-gradient(90deg, #1e293b, #1e293b 15px, #334155 15px, #334155 30px);
  border-radius: 4px;
  margin-top: 16px;
  border-top: 1px solid #475569;
  animation: conveyor-roll 20s linear infinite;
}

@keyframes conveyor-roll {
  from { background-position: 0 0; }
  to { background-position: 300px 0; }
}

/* ===================================================================
   控制台甲板 (Control Deck): 点阵LED屏幕 + 机械微动按键 + 投币孔
   =================================================================== */
.kiosk-control-deck {
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: stretch;
}

.dot-matrix-display {
  background: var(--led-screen-bg);
  border: 3px solid #1f2937;
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: inset 0 0 18px rgba(0, 0, 0, 0.9);
  position: relative;
  overflow: hidden;
}

.dot-matrix-display::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.25) 2px, transparent 2px, transparent 4px);
  pointer-events: none;
}

.led-title-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: monospace;
  font-size: 0.78rem;
  color: var(--led-glow-color);
  opacity: 0.8;
  margin-bottom: 8px;
}

.led-ticker-container {
  overflow: hidden;
  white-space: nowrap;
  background: rgba(0, 0, 0, 0.4);
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px solid rgba(16, 185, 129, 0.2);
  margin-bottom: 12px;
}

.led-ticker-text {
  display: inline-block;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--led-glow-color);
  text-shadow: 0 0 6px var(--led-glow-color);
  animation: ticker-roll 16s linear infinite;
}

@keyframes ticker-roll {
  0% { transform: translateX(100%); }
  100% { transform: translateX(-100%); }
}

.led-status-feedback {
  font-family: monospace;
  font-size: 0.88rem;
  color: #a7f3d0;
  background: rgba(16, 185, 129, 0.08);
  padding: 8px 10px;
  border-radius: 4px;
}

.deck-keypad-panel {
  background: var(--bg-tertiary);
  border: 2px solid var(--kiosk-bezel);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.keypad-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.mechanical-keys-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.mech-btn {
  background: var(--key-bg);
  border: 1px solid var(--key-border);
  border-radius: 8px;
  padding: 12px 6px;
  font-family: monospace;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  box-shadow: var(--key-shadow);
  transition: all 0.08s ease;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mech-btn:hover {
  transform: translateY(2px);
  box-shadow: 0 3px 0 #9ca3af, 0 4px 6px rgba(0, 0, 0, 0.15);
}

.mech-btn:active,
.mech-btn.pressed {
  transform: translateY(5px);
  box-shadow: var(--key-active-shadow);
  background: var(--primary-light);
  color: var(--primary);
}

.mech-btn.btn-action {
  font-size: 0.82rem;
  background: var(--primary);
  color: #fff;
  border-color: var(--primary-hover);
  box-shadow: 0 5px 0 #312e81, 0 8px 12px rgba(49, 46, 129, 0.3);
}

.mech-btn.btn-action:hover {
  box-shadow: 0 3px 0 #312e81, 0 4px 6px rgba(49, 46, 129, 0.2);
}

.mech-btn.btn-action:active {
  box-shadow: 0 1px 0 #312e81, 0 2px 4px rgba(49, 46, 129, 0.2);
}

.coin-slot-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all 0.2s ease;
}

.coin-slot-box:hover {
  border-color: #f59e0b;
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.25);
}

.coin-slot-title {
  display: flex;
  flex-direction: column;
}

.coin-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
}

.current-cycle {
  font-size: 0.95rem;
  font-weight: 800;
  color: #f59e0b;
}

.coin-hardware {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: radial-gradient(circle, #fbbf24 30%, #d97706 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #78350f;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.coin-slot-box:active .coin-hardware {
  transform: scale(0.9) rotate(30deg);
}

/* ===================================================================
   底部出货取物仓 (Dispenser Drawer / Collection Tray)
   =================================================================== */
.kiosk-dispenser-tray {
  margin-top: 24px;
  background: #0f172a;
  border: 3px solid #334155;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: inset 0 8px 20px rgba(0, 0, 0, 0.8);
}

.tray-door-handle {
  background: #1e293b;
  border-bottom: 2px solid #334155;
  padding: 8px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #94a3b8;
  font-size: 0.82rem;
  font-family: monospace;
}

.tray-interior {
  padding: 20px;
  min-height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.tray-placeholder {
  color: #64748b;
  font-size: 0.92rem;
  text-align: center;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dispensed-profile-card {
  width: 100%;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.95), rgba(15, 23, 42, 0.95));
  border: 1px solid #38bdf8;
  border-radius: 10px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: 0 10px 25px rgba(56, 189, 248, 0.2);
  animation: gravity-drop 0.45s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes gravity-drop {
  0% { transform: translateY(-40px) scale(0.9); opacity: 0; }
  100% { transform: translateY(0) scale(1); opacity: 1; }
}

.profile-card-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.profile-qr-box {
  width: 60px;
  height: 60px;
  background: #ffffff;
  border-radius: 6px;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-details h4 {
  font-size: 1.05rem;
  color: #ffffff;
  margin-bottom: 4px;
}

.profile-details p {
  font-size: 0.82rem;
  color: #94a3b8;
}

.profile-cta-group {
  display: flex;
  gap: 10px;
}

/* ===================================================================
   通用的 Section 样式
   =================================================================== */
.section {
  padding: 90px 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* ===================================================================
   产品核心优势介绍 (3个图文卡片)
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-speed) ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary);
}

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon-wrapper {
  background: var(--accent-gradient);
  color: #fff;
  transform: scale(1.08);
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
}

.feature-list {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.feature-list svg {
  color: var(--speed-fast);
  flex-shrink: 0;
}

/* ===================================================================
   流媒体图卡 & AI支持图卡
   =================================================================== */
.media-ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.spotlight-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-speed) ease;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.spotlight-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary);
}

.spotlight-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  padding: 6px 14px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.spotlight-title {
  font-size: 1.7rem;
  font-weight: 800;
  margin-bottom: 14px;
  line-height: 1.3;
}

.spotlight-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 28px;
}

.platform-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}

.pill-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.pill-item:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.card-metrics-box {
  margin-top: auto;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--border-color);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

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

.metric-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--speed-fast);
}

/* ===================================================================
   套餐价格对比表 (Pricing)
   =================================================================== */
.pricing-cycle-switch {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 40px;
}

.switch-pill {
  display: inline-flex;
  background: var(--bg-tertiary);
  padding: 4px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

.cycle-btn {
  padding: 8px 22px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.cycle-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.35);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-speed) ease;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--card-shadow-hover);
}

.pricing-card.popular {
  border: 2px solid var(--primary);
  transform: scale(1.03);
  box-shadow: 0 20px 35px -5px rgba(79, 70, 229, 0.25);
  z-index: 2;
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-6px);
}

.popular-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
  white-space: nowrap;
}

.pricing-header {
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 24px;
  margin-bottom: 24px;
}

.plan-name {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.plan-tagline {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.amount {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-primary);
}

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

.plan-billing-note {
  font-size: 0.82rem;
  color: #10b981;
  font-weight: 600;
  margin-top: 6px;
}

.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: 12px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.plan-feature-item svg {
  color: var(--speed-fast);
  width: 18px;
  height: 18px;
  margin-top: 3px;
  flex-shrink: 0;
}

.plan-feature-item.muted {
  color: var(--text-muted);
  opacity: 0.6;
}

/* ===================================================================
   用户真实评价 (Testimonials)
   =================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-speed) ease;
}

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

.star-rating {
  display: flex;
  gap: 4px;
  color: #f59e0b;
  margin-bottom: 16px;
}

.star-rating svg {
  width: 18px;
  height: 18px;
}

.testimonial-body {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
}

.user-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.user-meta-name {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
}

.user-meta-title {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ===================================================================
   常见问题解答 (FAQ)
   =================================================================== */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: border-color 0.2s ease;
}

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

.faq-question {
  width: 100%;
  padding: 22px 26px;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  cursor: pointer;
  transition: color 0.2s ease;
}

.faq-icon-arrow {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), color 0.2s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-question {
  color: var(--primary);
}

.faq-item.active .faq-icon-arrow {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
  background: var(--bg-secondary);
  padding: 0 26px;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 26px 22px;
  transition: max-height 0.4s ease-in-out, padding 0.3s ease;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===================================================================
   SEO 深度长篇科普文章专用排版样式 (Table of Contents, FAQs, Related Posts)
   =================================================================== */
.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 14px 0;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.88rem;
  color: var(--text-muted);
}

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

/* 目录盒子 (Table of Contents) */
.article-toc {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 30px 0 40px;
}

.toc-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-left: 8px;
}

.toc-list li {
  position: relative;
  padding-left: 18px;
}

.toc-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

.toc-list a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease;
  display: inline-block;
}

.toc-list a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

/* 文章正文段落与表格排版 */
.article-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 44px 0 18px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-color);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 28px 0 12px;
}

.article-content p {
  margin-bottom: 18px;
}

.article-content ul, 
.article-content ol {
  margin: 16px 0 24px 24px;
}

.article-content li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.article-content strong {
  color: var(--text-primary);
}

.seo-table-box {
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
}

.seo-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.94rem;
}

.seo-table th, 
.seo-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
}

.seo-table th {
  background: var(--bg-tertiary);
  font-weight: 700;
  color: var(--text-primary);
}

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

.seo-table tr:hover td {
  background: var(--primary-light);
}

/* 相关阅读网格 (Related Articles Grid) */
.related-posts-section {
  margin-top: 50px;
  padding-top: 36px;
  border-top: 2px dashed var(--border-color);
}

.related-posts-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 22px;
}

.related-posts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.related-post-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s ease;
}

.related-post-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
  box-shadow: var(--card-shadow);
}

.related-post-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.related-post-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 14px;
}

.related-post-card a.read-link {
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ===================================================================
   页脚 Footer (严格只保留四个标题，在新页面打开展示)
   =================================================================== */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 36px;
  transition: background var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 36px;
  margin-bottom: 28px;
}

.footer-link {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.footer-copyright {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
}

.footer-copyright a {
  color: var(--text-secondary);
}

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

/* ===================================================================
   响应式媒体查询 (@media)
   =================================================================== */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.6rem;
  }
  .kiosk-control-deck {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .pricing-card.popular {
    transform: none;
  }
  .pricing-card.popular:hover {
    transform: translateY(-6px);
  }
  .media-ai-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .related-posts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px;
    gap: 16px;
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: 10px 0;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--border-color);
  }

  .hero-title {
    font-size: 2.1rem;
  }

  .hero-subtitle {
    font-size: 1.15rem;
  }

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

  .dispensed-profile-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .profile-cta-group {
    width: 100%;
    margin-top: 10px;
  }

  .profile-cta-group .btn {
    width: 100%;
  }

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

  .spotlight-card {
    padding: 26px 20px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }

  .btn {
    min-height: 48px;
    padding: 12px 24px;
    width: 100%;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .theme-toggle-btn {
    width: 44px;
    height: 44px;
  }
}