/* ==========================================================================
   CyberGuard机场 - 幻樱星夜 · 灵脉结界与以太浮岛 UI 视觉系统 (style.css)
   主题定位：Sakura Starlight Ethereal Realm (动漫幻想 / 极光灵脉 / 高转化沉浸式)
   核心材质：深空曜夜紫底色 · 幻樱粉与极光天青强调 · 磨砂白玉玻璃态 · 3D悬停微倾斜 · 樱光流转高转化 CTA
   ========================================================================== */

:root {
  /* 基础暗夜色系与界面层级 */
  --bg-space: #080713;
  --bg-deep: #0e0c22;
  --bg-surface: rgba(18, 15, 38, 0.78);
  --bg-surface-elevated: rgba(26, 21, 54, 0.88);
  --bg-card: rgba(22, 17, 46, 0.72);
  --bg-card-hover: rgba(34, 27, 72, 0.88);
  --bg-card-popular: rgba(30, 22, 64, 0.94);

  /* 文字配色体系 */
  --text-pure: #ffffff;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* 幻樱动漫核心色调 */
  --sakura-pink: #f472b6;
  --sakura-pink-glow: rgba(244, 114, 182, 0.35);
  --sakura-magenta: #ec4899;
  --sakura-rose: #fb7185;
  --aurora-cyan: #38bdf8;
  --aurora-cyan-glow: rgba(56, 189, 248, 0.35);
  --aurora-teal: #06b6d4;
  --starlight-gold: #fbbf24;
  --starlight-gold-glow: rgba(251, 191, 36, 0.35);
  --ethereal-purple: #a855f7;

  /* 边框与光晕体系 */
  --border-glass: rgba(244, 114, 182, 0.16);
  --border-glass-hover: rgba(56, 189, 248, 0.55);
  --border-popular: rgba(244, 114, 182, 0.75);
  --glow-btn: 0 0 25px rgba(244, 114, 182, 0.45), inset 0 1px 1px rgba(255, 255, 255, 0.4);

  /* 排版常数 */
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --container-max-width: 1180px;
  --header-height: 72px;
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-speed: 0.25s;
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-space);
  color: var(--text-main);
  line-height: 1.7;
  word-break: break-word;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 动效背景舞台：深空星海、柔和极光云雾与飘落樱花 */
.sakura-stage-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  background: radial-gradient(circle at 50% 15%, #181236 0%, #0d0a21 50%, #080713 100%);
}

.aurora-nebula-glow {
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 550px;
  background: radial-gradient(ellipse at center, rgba(236, 72, 153, 0.18) 0%, rgba(56, 189, 248, 0.12) 40%, rgba(168, 85, 247, 0.05) 70%, transparent 80%);
  filter: blur(60px);
  animation: auroraPulse 12s ease-in-out infinite alternate;
}

@keyframes auroraPulse {
  0% { transform: translateX(-50%) scale(0.95); opacity: 0.8; }
  100% { transform: translateX(-50%) scale(1.08); opacity: 1; }
}

.astral-grid-plane {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(244, 114, 182, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(56, 189, 248, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 30%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, black 30%, transparent 80%);
}

/* 飘落樱花花瓣动效 (纯 CSS 硬件加速) */
.petal-drift {
  position: absolute;
  width: 14px;
  height: 18px;
  background: radial-gradient(circle at 40% 30%, #fbcfe8 0%, #f472b6 60%, #db2777 100%);
  border-radius: 60% 40% 70% 30% / 70% 30% 70% 30%;
  filter: drop-shadow(0 0 6px rgba(244, 114, 182, 0.6));
  opacity: 0.65;
  animation: petalFall linear infinite;
}

.petal-1 { top: -20px; left: 15%; animation-duration: 11s; animation-delay: 0s; transform: scale(0.8); }
.petal-2 { top: -20px; left: 35%; animation-duration: 14s; animation-delay: 3s; transform: scale(1.1); }
.petal-3 { top: -20px; left: 60%; animation-duration: 12s; animation-delay: 1.5s; transform: scale(0.9); }
.petal-4 { top: -20px; left: 80%; animation-duration: 16s; animation-delay: 4.5s; transform: scale(1.2); }
.petal-5 { top: -20px; left: 92%; animation-duration: 13s; animation-delay: 2s; transform: scale(0.7); }

@keyframes petalFall {
  0% {
    transform: translateY(0) rotate(0deg) translateX(0);
    opacity: 0;
  }
  10% { opacity: 0.75; }
  90% { opacity: 0.6; }
  100% {
    transform: translateY(105vh) rotate(540deg) translateX(80px);
    opacity: 0;
  }
}

/* 流星划痕特效 */
.shooting-star {
  position: absolute;
  top: 15%;
  left: 70%;
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, #ffffff, rgba(56, 189, 248, 0.8), transparent);
  transform: rotate(-35deg);
  opacity: 0;
  animation: meteorShoot 9s ease-in-out infinite;
}

@keyframes meteorShoot {
  0%, 80% { opacity: 0; transform: translate(0, 0) rotate(-35deg); }
  85% { opacity: 1; }
  90% { opacity: 0; transform: translate(-250px, 160px) rotate(-35deg); }
  100% { opacity: 0; }
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  position: relative;
  z-index: 1;
}

/* 顶部导航 Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(14, 12, 34, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-glass);
  transition: background-color var(--transition-speed) ease, padding var(--transition-speed) ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-pure);
}

.brand-emblem-wrap {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--sakura-pink), var(--aurora-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(244, 114, 182, 0.4);
  overflow: hidden;
}

.brand-emblem-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  background: linear-gradient(90deg, #ffffff 40%, var(--sakura-pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  color: var(--aurora-cyan);
  letter-spacing: 0.08em;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-speed) ease;
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a:hover, .nav-links a.active {
  color: #ffffff;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--sakura-pink), var(--aurora-cyan));
  transition: width var(--transition-speed) ease;
  border-radius: var(--radius-full);
}

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

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

.menu-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-pure);
  padding: 0.45rem 0.65rem;
  font-size: 1.25rem;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  background-color: rgba(14, 12, 34, 0.96);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 1.25rem 1.5rem;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav ul {
  list-style: none;
  margin-bottom: 1.25rem;
}

.mobile-nav li {
  margin-bottom: 0.75rem;
}

.mobile-nav a {
  display: block;
  font-size: 1.1rem;
  color: var(--text-main);
  text-decoration: none;
  padding: 0.4rem 0;
}

/* 按钮规范 (超高转化质感) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.98rem;
  padding: 0.78rem 1.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

/* 主 CTA：幻樱极光流动渐变与光泽扫过 */
.btn-primary {
  background: linear-gradient(135deg, #ec4899 0%, #f43f5e 50%, #f59e0b 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(236, 72, 153, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.4);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-25deg);
  transition: left 0.75s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(236, 72, 153, 0.6), inset 0 1px 2px rgba(255, 255, 255, 0.6);
  color: #ffffff;
  text-decoration: none;
}

.btn-primary:hover::before {
  left: 150%;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid rgba(244, 114, 182, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(244, 114, 182, 0.12);
  border-color: var(--sakura-pink);
  color: #ffffff;
  transform: translateY(-2px);
  text-decoration: none;
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 0.95rem 2.25rem;
  font-size: 1.1rem;
}

/* 点击波纹 */
.ripple-fx {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: scale(0);
  animation: rippleSpread 0.6s linear;
  pointer-events: none;
}

@keyframes rippleSpread {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Hero 首屏核心设计：左文案 + 右动漫领航者立绘交互舱 */
.hero-section {
  padding: 4.5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.hero-hud-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1rem;
  background: rgba(244, 114, 182, 0.1);
  border: 1px solid rgba(244, 114, 182, 0.35);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: #fbcfe8;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
}

.hud-spark {
  color: var(--starlight-gold);
  animation: sparkPulse 2s ease-in-out infinite;
}

@keyframes sparkPulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
}

.hero-title {
  font-size: clamp(2.2rem, 4.2vw, 3.4rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-pure);
  margin-bottom: 1.35rem;
  letter-spacing: -0.02em;
}

.hero-title-highlight {
  background: linear-gradient(135deg, #f472b6 0%, #38bdf8 50%, #fcd34d 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 2.25rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.trust-badge-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  max-width: 540px;
}

.trust-badge-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 1rem;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  color: var(--text-main);
  transition: border-color var(--transition-speed) ease;
}

.trust-badge-item:hover {
  border-color: rgba(244, 114, 182, 0.4);
}

.trust-badge-item svg {
  width: 18px;
  height: 18px;
  fill: var(--sakura-pink);
  flex-shrink: 0;
}

/* Hero 右侧：动漫灵脉领航神乐姬全息舱 */
.hero-stage-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.pilot-card-frame {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: linear-gradient(180deg, rgba(32, 24, 68, 0.85) 0%, rgba(18, 14, 40, 0.92) 100%);
  border: 1px solid rgba(244, 114, 182, 0.35);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 35px rgba(244, 114, 182, 0.2);
  overflow: hidden;
  backdrop-filter: blur(16px);
  transform-style: preserve-3d;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pilot-hud-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  background: rgba(0, 0, 0, 0.35);
  border-bottom: 1px solid rgba(244, 114, 182, 0.2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.status-beacon-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #34d399;
  display: inline-block;
  margin-right: 0.4rem;
  box-shadow: 0 0 8px #34d399;
  animation: beaconPulse 1.8s infinite;
}

@keyframes beaconPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hud-code-tag {
  color: var(--aurora-cyan);
}

.pilot-character-viewport {
  position: relative;
  width: 100%;
  height: 380px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 40%, rgba(244, 114, 182, 0.15) 0%, transparent 70%);
}

.pilot-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.5s ease;
}

.pilot-card-frame:hover .pilot-portrait-img {
  transform: scale(1.03);
}

/* 旋转灵脉法阵环 */
.astral-rune-ring {
  position: absolute;
  width: 320px;
  height: 320px;
  pointer-events: none;
  opacity: 0.35;
  animation: ringRotate 40s linear infinite;
}

@keyframes ringRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 可交互对白气泡 */
.pilot-dialogue-bubble {
  position: absolute;
  bottom: 1.25rem;
  left: 1rem;
  right: 1rem;
  background: rgba(14, 11, 32, 0.88);
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  cursor: pointer;
  backdrop-filter: blur(12px);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.pilot-dialogue-bubble:hover {
  transform: translateY(-2px);
  border-color: var(--sakura-pink);
}

.bubble-companion-mini {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--sakura-pink);
  flex-shrink: 0;
}

.bubble-text-msg {
  font-size: 0.85rem;
  color: #ffffff;
  line-height: 1.45;
}

.pilot-telemetry-tray {
  padding: 0.9rem 1.25rem 1.1rem;
  background: rgba(10, 8, 26, 0.7);
  border-top: 1px solid rgba(244, 114, 182, 0.15);
}

.telemetry-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  margin-bottom: 0.4rem;
}

.telemetry-node-name {
  color: var(--text-muted);
}

.telemetry-latency {
  color: var(--aurora-cyan);
  font-family: var(--font-mono);
  font-weight: 600;
}

.telemetry-progress-track {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.telemetry-progress-fill {
  width: 88%;
  height: 100%;
  background: linear-gradient(90deg, var(--sakura-pink), var(--aurora-cyan));
  animation: progressPulse 3s ease-in-out infinite;
}

@keyframes progressPulse {
  0%, 100% { width: 85%; }
  50% { width: 94%; }
}

/* 通用区块排版 */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-alt {
  background: rgba(14, 11, 34, 0.6);
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--sakura-pink);
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 0.85rem;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* 流媒体与AI生态 (Ecosystem) */
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.ecosystem-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  backdrop-filter: blur(12px);
  transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.ecosystem-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glass-hover);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(56, 189, 248, 0.2);
}

.ecosystem-card-title {
  font-size: 1.4rem;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-pure);
}

.ecosystem-card-title svg {
  color: var(--sakura-pink);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.tech-tag {
  background: rgba(255, 255, 255, 0.05);
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.85rem;
  font-size: 0.88rem;
  font-weight: 500;
  transition: background 0.2s, border-color 0.2s;
}

.tech-tag:hover {
  background: rgba(244, 114, 182, 0.15);
  border-color: var(--sakura-pink);
}

/* 核心特性卡 (Features - 4张) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.75rem;
  backdrop-filter: blur(12px);
  position: relative;
  transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--sakura-pink);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(244, 114, 182, 0.2);
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(244, 114, 182, 0.2), rgba(56, 189, 248, 0.15));
  border: 1px solid rgba(244, 114, 182, 0.4);
  color: var(--sakura-pink);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.35rem;
}

.feature-card-title {
  font-size: 1.3rem;
  color: var(--text-pure);
  margin-bottom: 0.75rem;
}

.feature-card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* 优势对比表 (Benefits) */
.comparison-table-wrap {
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.98rem;
}

.comparison-table th,
.comparison-table td {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.comparison-table th {
  background: rgba(0, 0, 0, 0.35);
  color: var(--text-pure);
  font-weight: 700;
}

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

.comparison-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.badge-brand {
  color: var(--aurora-cyan);
  font-weight: 700;
}

/* 套餐定价区 (Pricing - 3档与周期切换) */
.pricing-billing-switch {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.billing-tab-group {
  display: inline-flex;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  padding: 0.3rem;
}

.billing-tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.5rem 1.4rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.2s ease;
}

.billing-tab-btn.is-active {
  background: linear-gradient(135deg, var(--sakura-pink), var(--sakura-magenta));
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(244, 114, 182, 0.4);
}

.discount-tag {
  background: var(--starlight-gold);
  color: #000000;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
  margin-left: 0.25rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  backdrop-filter: blur(14px);
  transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glass-hover);
}

.pricing-card.is-popular {
  border: 2px solid var(--border-popular);
  background: var(--bg-card-popular);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 28px rgba(244, 114, 182, 0.25);
}

.popular-badge {
  position: absolute;
  top: -13px;
  right: 1.75rem;
  background: linear-gradient(90deg, #ec4899, #f43f5e);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.25rem 0.85rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  box-shadow: 0 4px 12px rgba(236, 72, 153, 0.5);
}

.pricing-tier-name {
  font-size: 1.5rem;
  color: var(--text-pure);
  margin-bottom: 0.4rem;
}

.pricing-tier-target {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.pricing-price-wrap {
  margin-bottom: 2rem;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.price-currency {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--sakura-pink);
}

.price-number {
  font-size: 3rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
}

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

.pricing-features-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2.25rem 0;
  flex-grow: 1;
}

.pricing-features-list li {
  padding: 0.7rem 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-main);
}

.pricing-features-list li:last-child {
  border-bottom: none;
}

.check-mark {
  color: var(--aurora-cyan);
  font-weight: bold;
}

/* 使用场景卡 (Scenarios - 4张) */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
}

.scenario-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(12px);
  transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.scenario-card:hover {
  transform: translateY(-4px);
  border-color: var(--aurora-cyan);
}

.scenario-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 0.85rem;
  margin-bottom: 1.15rem;
}

.scenario-title {
  font-size: 1.25rem;
  color: var(--text-pure);
  margin-bottom: 0.35rem;
}

.scenario-device {
  font-size: 0.85rem;
  color: var(--sakura-pink);
  font-family: var(--font-mono);
  font-weight: 600;
}

.scenario-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* FAQ 手风琴 */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: border-color var(--transition-speed) ease;
}

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

.faq-question {
  padding: 1.35rem 1.75rem;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-pure);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  font-size: 1.25rem;
  color: var(--sakura-pink);
  transition: transform var(--transition-speed) ease;
}

details[open] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 1.75rem 1.45rem;
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* Final CTA 底部转化区 */
.final-cta-section {
  background: linear-gradient(180deg, rgba(14, 11, 34, 0.9) 0%, #06050e 100%);
  border-top: 1px solid var(--border-glass);
  padding: 5.5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.final-cta-title {
  color: #ffffff;
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.15rem;
}

.final-cta-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 2.5rem;
}

/* 页脚 Footer */
.site-footer {
  background-color: #07060f;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4rem 0 2.5rem;
  margin-top: auto;
  font-size: 0.95rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.75rem;
}

.footer-col-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-pure);
  margin-bottom: 1.15rem;
}

.footer-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links-list li {
  margin-bottom: 0.75rem;
}

.footer-links-list a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

.footer-links-list a:hover {
  color: var(--sakura-pink);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--text-dim);
  font-size: 0.88rem;
}

/* 移动端吸底 CTA */
.sticky-mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(14, 11, 34, 0.92);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-glass);
  padding: 0.85rem 1.25rem;
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.6);
  z-index: 99;
}

/* 文章正文与内容页 */
.content-page {
  padding: 3.5rem 0 5rem;
}

.breadcrumb-nav {
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
  color: var(--text-dim);
}

.breadcrumb-nav a {
  color: var(--text-muted);
  text-decoration: none;
}

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

.breadcrumb-separator {
  margin: 0 0.5rem;
  color: var(--text-dim);
}

.article-header {
  margin-bottom: 2.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-glass);
}

.article-title {
  font-size: 2.35rem;
  line-height: 1.35;
  color: var(--text-pure);
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  gap: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.article-body {
  max-width: 820px;
  line-height: 1.85;
  font-size: 1.08rem;
}

.article-lead {
  font-size: 1.15rem;
  color: var(--text-pure);
  background: rgba(244, 114, 182, 0.08);
  border-left: 4px solid var(--sakura-pink);
  padding: 1.35rem 1.65rem;
  margin-bottom: 2.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-body h2 {
  font-size: 1.65rem;
  color: var(--text-pure);
  margin-top: 3rem;
  margin-bottom: 1.15rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-glass);
}

.article-body h3 {
  font-size: 1.3rem;
  color: #fbcfe8;
  margin-top: 2.25rem;
  margin-bottom: 0.85rem;
}

.article-body p {
  margin-bottom: 1.35rem;
  color: var(--text-main);
}

.article-body ul, .article-body ol {
  margin-bottom: 1.65rem;
  padding-left: 1.85rem;
}

.article-body li {
  margin-bottom: 0.65rem;
  color: var(--text-main);
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.15), rgba(56, 189, 248, 0.1));
  border: 1px solid rgba(244, 114, 182, 0.4);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  margin: 3.5rem 0;
  text-align: center;
  backdrop-filter: blur(12px);
}

.article-cta-title {
  font-size: 1.5rem;
  color: #ffffff;
  margin-bottom: 0.65rem;
}

.article-cta-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.internal-links-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin-top: 3.5rem;
}

.internal-links-title {
  font-size: 1.2rem;
  color: var(--text-pure);
  margin-bottom: 0.85rem;
}

.internal-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.internal-links-list li {
  margin-bottom: 0.65rem;
}

.internal-links-list a {
  color: var(--aurora-cyan);
  text-decoration: none;
}

.internal-links-list a:hover {
  text-decoration: underline;
  color: var(--sakura-pink);
}

/* 指南卡片列表 (jiaocheng.html) */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(12px);
  transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.guide-card:hover {
  transform: translateY(-4px);
  border-color: var(--sakura-pink);
}

.guide-card-title {
  font-size: 1.3rem;
  margin-bottom: 0.85rem;
}

.guide-card-title a {
  color: var(--text-pure);
  text-decoration: none;
}

.guide-card-title a:hover {
  color: var(--sakura-pink);
}

.guide-card-excerpt {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.guide-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 0.85rem;
}

/* 响应式断点适配 */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3.5rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .trust-badge-list {
    margin-left: auto;
    margin-right: auto;
  }

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

@media (max-width: 768px) {
  .nav-links, .nav-cta-wrap .btn {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .hero-section {
    padding: 3rem 0 2.5rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .trust-badge-list {
    grid-template-columns: 1fr;
  }

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

  .sticky-mobile-cta {
    display: block;
  }

  body {
    padding-bottom: 4.8rem;
  }
}

/* 支持 prefers-reduced-motion 无障碍 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .petal-drift, .shooting-star, .aurora-nebula-glow, .astral-rune-ring {
    animation: none !important;
  }
}