/* ========================================
   宏源 · 数字人工场 - 官方宣传站
   设计系统 v2.0 · 深空科技主题
   霓虹青 × 电紫 · 玻璃拟态 · 动效增强
   ======================================== */

/* ========== 设计变量 ========== */
:root {
  color-scheme: dark;

  /* 深空底色 */
  --navy-900: #04070f;
  --navy-800: #080e1c;
  --navy-700: #0d1830;
  --navy-600: #13224a;
  --navy-500: #3d7bfd;   /* 交互蓝（变量语义：品牌亮蓝） */
  --navy-400: #5c95ff;
  --navy-300: #7faaff;
  --navy-200: #a3c4ff;
  --navy-100: #c6dcff;
  --navy-50: #e4efff;

  /* 点缀色 - 霓虹红 */
  --red-accent: #ff5c49;
  --red-accent-hover: #ff7463;
  --red-glow: rgba(255, 92, 73, 0.4);

  /* 科技色 */
  --tech-cyan: #00d4ff;
  --tech-blue: #3b82f6;
  --tech-purple: #7c3aed;

  /* 渐变 */
  --grad-brand: linear-gradient(135deg, #00d4ff 0%, #3d7bfd 50%, #7c3aed 100%);
  --grad-soft: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(124, 58, 237, 0.12));

  /* 中性色（深色主题反转：900 最亮 → 50 最暗） */
  --white: #ffffff;
  --off-white: #0a1020;
  --gray-50: #131f38;
  --gray-100: #182642;
  --gray-200: #25365c;
  --gray-300: #354970;
  --gray-400: #51678f;
  --gray-500: #7288ad;
  --gray-600: #94a9cc;
  --gray-700: #b6c7e5;
  --gray-800: #d5e1f5;
  --gray-900: #eff5ff;

  /* 玻璃拟态 */
  --glass-bg: linear-gradient(165deg, rgba(21, 33, 62, 0.55) 0%, rgba(9, 14, 28, 0.65) 100%);
  --glass-bg-hover: linear-gradient(165deg, rgba(28, 44, 80, 0.65) 0%, rgba(12, 20, 40, 0.75) 100%);
  --glass-border: rgba(126, 166, 255, 0.15);
  --glass-border-bright: rgba(0, 212, 255, 0.38);

  /* 字体 */
  --font-sans: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;

  /* 间距 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 阴影（深色环境） */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.55);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.16);
  --shadow-neon: 0 8px 40px rgba(0, 212, 255, 0.22), 0 4px 60px rgba(124, 58, 237, 0.22);
  --shadow-red-glow: 0 0 30px rgba(255, 92, 73, 0.3);

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-base: 0.3s var(--ease-out);
  --transition-slow: 0.5s var(--ease-out);

  /* 容器 */
  --container-max: 1200px;
  --container-padding: 1.5rem;

  /* Z-index */
  --z-nav: 1000;
  --z-modal: 2000;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--gray-800);
  background:
    radial-gradient(1200px 800px at 85% -10%, rgba(124, 58, 237, 0.16), transparent 60%),
    radial-gradient(1000px 700px at -10% 15%, rgba(0, 212, 255, 0.1), transparent 55%),
    radial-gradient(900px 900px at 50% 120%, rgba(59, 130, 246, 0.12), transparent 60%),
    #050810;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 内容层抬升，让星尘背景垫底 */
body > *:not(.navbar):not(.bg-stars):not(.cursor-glow):not(.scroll-progress) {
  position: relative;
  z-index: 1;
}

::selection {
  background: rgba(0, 212, 255, 0.28);
  color: var(--white);
}

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #050810; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #0e7490, #3d7bfd, #7c3aed);
  border-radius: 8px;
  border: 2px solid #050810;
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, #00d4ff, #5c95ff); }

img, svg { display: block; max-width: 100%; }

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

button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: inherit; }
ul { list-style: none; }

/* ========== 全局动效组件（由 JS 注入） ========== */
.bg-stars {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%, rgba(255, 255, 255, 0.5), transparent 100%),
    radial-gradient(1px 1px at 32% 68%, rgba(0, 212, 255, 0.6), transparent 100%),
    radial-gradient(1.5px 1.5px at 55% 15%, rgba(255, 255, 255, 0.35), transparent 100%),
    radial-gradient(1px 1px at 71% 48%, rgba(124, 58, 237, 0.55), transparent 100%),
    radial-gradient(1px 1px at 84% 82%, rgba(0, 212, 255, 0.45), transparent 100%),
    radial-gradient(1.5px 1.5px at 44% 88%, rgba(255, 255, 255, 0.3), transparent 100%),
    radial-gradient(1px 1px at 8% 76%, rgba(124, 58, 237, 0.4), transparent 100%),
    radial-gradient(1px 1px at 93% 32%, rgba(255, 255, 255, 0.35), transparent 100%);
  background-size: 640px 640px;
  opacity: 0.5;
  animation: starDrift 160s linear infinite;
}

@keyframes starDrift {
  from { background-position: 0 0; }
  to { background-position: 640px 640px; }
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: calc(var(--z-modal) + 1);
  background: linear-gradient(90deg, var(--tech-cyan), var(--navy-500), var(--tech-purple));
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.6);
  transition: width 0.08s linear;
}

.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 460px;
  height: 460px;
  margin: -230px 0 0 -230px;
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.07) 0%, rgba(124, 58, 237, 0.05) 40%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s ease;
  will-change: transform;
}

@media (pointer: coarse) {
  .cursor-glow { display: none; }
}

/* ========== 容器 ========== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ========== 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: 1rem 0;
  background: rgba(5, 9, 18, 0.55);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: 0.6rem 0;
  background: rgba(4, 8, 16, 0.85);
  border-bottom-color: rgba(0, 212, 255, 0.18);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.45);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--gray-700);
  font-weight: 600;
  font-size: 1.05rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
  color: var(--tech-cyan);
  filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.5));
}

/* 位图 logo（线稿 mask + 品牌渐变着色） */
.logo-image {
  display: block;
  background: linear-gradient(135deg, var(--tech-cyan) 0%, #5c95ff 45%, var(--tech-purple) 100%);
  -webkit-mask: url('assets/logo/logo-line.png') center / contain no-repeat;
  mask: url('assets/logo/logo-line.png') center / contain no-repeat;
}

.brand-text strong { color: var(--white); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-500);
  padding: 0.25rem 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--grad-brand);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
  transition: width var(--transition-base);
}

.nav-link:hover { color: var(--white); }

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

.nav-link.active { color: var(--tech-cyan); }

.nav-cta {
  background: var(--grad-brand);
  color: var(--white) !important;
  padding: 0.5rem 1.25rem !important;
  border-radius: var(--radius-full);
  box-shadow: 0 0 18px rgba(0, 212, 255, 0.25);
  transition: all var(--transition-base);
}

.nav-cta::after { display: none; }

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 24px rgba(0, 212, 255, 0.45), 0 4px 30px rgba(124, 58, 237, 0.35);
}

.nav-toggle {
  display: none;
  width: 32px;
  height: 24px;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--tech-cyan);
  border-radius: 2px;
  box-shadow: 0 0 6px rgba(0, 212, 255, 0.5);
  transition: all var(--transition-base);
}

/* ========== Hero 区域 ========== */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 7rem 0 4rem;
  background:
    radial-gradient(900px 600px at 78% 18%, rgba(124, 58, 237, 0.22), transparent 62%),
    radial-gradient(800px 560px at 12% 70%, rgba(0, 212, 255, 0.14), transparent 60%),
    linear-gradient(180deg, #04070f 0%, #071021 55%, #0a1329 100%);
  overflow: hidden;
  color: var(--white);
}

/* 极光光斑 */
.hero::before,
.hero::after {
  content: '';
  position: absolute;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.hero::before {
  top: -160px;
  right: -120px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.3) 0%, transparent 70%);
  animation: auroraDrift 14s ease-in-out infinite;
}

.hero::after {
  bottom: -200px;
  left: -140px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
  animation: auroraDrift 18s ease-in-out infinite reverse;
}

@keyframes auroraDrift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-60px, 50px) scale(1.15); }
}

.particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.65;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  min-height: calc(100vh - 11rem);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.28);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--navy-100);
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.12), inset 0 0 18px rgba(0, 212, 255, 0.06);
  animation: fadeInUp 0.8s var(--ease-out);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--tech-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--tech-cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s var(--ease-out) 0.1s both;
}

.title-line { display: block; }

.gradient-text {
  background: linear-gradient(135deg, var(--tech-cyan) 0%, #5c95ff 40%, var(--tech-purple) 80%, var(--tech-cyan) 100%);
  background-size: 250% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 5s ease-in-out infinite;
  filter: drop-shadow(0 0 24px rgba(0, 212, 255, 0.35));
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--navy-200);
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.8s var(--ease-out) 0.3s both;
}

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

.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--tech-cyan);
  font-family: var(--font-mono);
  text-shadow: 0 0 18px rgba(0, 212, 255, 0.55);
}

.stat-unit {
  font-size: 0.9rem;
  color: var(--navy-200);
  font-weight: 500;
}

.stat-label {
  display: block;
  font-size: 0.78rem;
  color: var(--navy-200);
  margin-top: 0.1rem;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, transparent, rgba(0, 212, 255, 0.4), transparent);
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s var(--ease-out) 0.4s both;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--grad-brand);
  background-size: 180% 100%;
  color: var(--white);
  border: none;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3), 0 4px 30px rgba(124, 58, 237, 0.25);
}

.btn-primary:hover {
  background-position: 100% 50%;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.45), 0 8px 45px rgba(124, 58, 237, 0.4);
}

.btn-secondary {
  background: rgba(0, 212, 255, 0.06);
  color: var(--tech-cyan);
  border-color: rgba(0, 212, 255, 0.35);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(0, 212, 255, 0.12);
  border-color: rgba(0, 212, 255, 0.6);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.2);
  transform: translateY(-2px);
}

.btn-block { width: 100%; justify-content: center; }

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  animation: fadeInUp 0.8s var(--ease-out) 0.5s both;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--navy-200);
}

.trust-item svg {
  color: var(--tech-cyan);
  flex-shrink: 0;
  filter: drop-shadow(0 0 4px rgba(0, 212, 255, 0.5));
}

/* ========== 数字人展示区（Hero 右侧） ========== */
.hero-right {
  animation: fadeInRight 1s var(--ease-out) 0.2s both;
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

.digital-human-showcase { position: relative; }

.showcase-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  height: 90%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.18) 0%, rgba(124, 58, 237, 0.12) 45%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
  animation: glowBreathe 5s ease-in-out infinite;
}

@keyframes glowBreathe {
  0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.08); }
}

.showcase-frame {
  position: relative;
  z-index: 1;
  background: linear-gradient(170deg, rgba(13, 22, 44, 0.85) 0%, rgba(6, 10, 22, 0.9) 100%);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(12px);
  box-shadow:
    0 0 70px rgba(0, 212, 255, 0.12),
    0 20px 60px rgba(124, 58, 237, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.showcase-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #ff5f56; box-shadow: 0 0 8px rgba(255, 95, 86, 0.6); }
.dot-yellow { background: #ffbd2e; box-shadow: 0 0 8px rgba(255, 189, 46, 0.5); }
.dot-green { background: #27c93f; box-shadow: 0 0 8px rgba(39, 201, 63, 0.55); }

.showcase-title {
  margin-left: 0.75rem;
  font-size: 0.78rem;
  color: var(--navy-200);
  font-family: var(--font-mono);
}

.showcase-body {
  position: relative;
  aspect-ratio: 1 / 1;
  background: radial-gradient(ellipse at center bottom, rgba(0, 212, 255, 0.07) 0%, transparent 60%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.promo-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  z-index: 1;
  background: rgba(3, 6, 12, 0.35);
}

/* 视频控制按钮 */
.video-controls {
  position: absolute;
  left: 12px;
  bottom: 12px;
  display: flex;
  gap: 0.5rem;
  z-index: 6;
}

.vc-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 7, 15, 0.65);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-sm);
  color: var(--tech-cyan);
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}

.vc-btn:hover {
  background: rgba(0, 212, 255, 0.18);
  box-shadow: 0 0 14px rgba(0, 212, 255, 0.35);
  transform: translateY(-1px);
}

.vc-btn svg { width: 16px; height: 16px; }

.vc-btn .icon-alt { display: none; }

.human-placeholder.is-paused .vc-toggle-play .icon-main { display: none; }
.human-placeholder.is-paused .vc-toggle-play .icon-alt { display: block; }

.human-placeholder.is-unmuted .vc-toggle-mute .icon-main { display: none; }
.human-placeholder.is-unmuted .vc-toggle-mute .icon-alt { display: block; }

.human-placeholder {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.human-silhouette { position: relative; z-index: 2; }

/* 首页数字代言人形象照：横版窗 16:9，图片完整展示 */
.spoke-video .showcase-body { aspect-ratio: 16 / 9; }

.human-placeholder.aileen-photo { overflow: hidden; }

.human-placeholder.aileen-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.silhouette-head {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.35) 0%, rgba(61, 123, 253, 0.4) 50%, rgba(124, 58, 237, 0.45) 100%);
  margin: 0 auto 0.5rem;
  position: relative;
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
  animation: float 4s ease-in-out infinite;
}

.silhouette-head::before {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.14) 0%, transparent 100%);
}

.silhouette-head::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.25) 0%, transparent 70%);
  animation: breathe 3s ease-in-out infinite;
}

.silhouette-body {
  width: 120px;
  height: 100px;
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.22) 0%, rgba(124, 58, 237, 0.3) 100%);
  border-radius: 60px 60px 20px 20px;
  margin: 0 auto;
  box-shadow: 0 0 26px rgba(124, 58, 237, 0.25);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes breathe {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.15); }
}

.ai-watermark {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: var(--red-accent);
  color: var(--white);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  letter-spacing: 0.05em;
  z-index: 5;
  box-shadow: 0 2px 10px var(--shadow-red-glow);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--navy-200);
  animation: fadeIn 1s ease-out 1s both;
  z-index: 2;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--tech-cyan);
  border-bottom: 2px solid var(--tech-cyan);
  transform: rotate(45deg);
  filter: drop-shadow(0 0 4px rgba(0, 212, 255, 0.5));
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translate(0, 0); }
  50% { transform: rotate(45deg) translate(6px, 6px); opacity: 0.5; }
}

/* ========== 通用 Section 样式 ========== */
.section { padding: var(--space-20) 0; }

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-16);
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--red-accent);
  padding: 0.35rem 0.9rem;
  background: rgba(255, 92, 73, 0.1);
  border: 1px solid rgba(255, 92, 73, 0.25);
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.section-title.light { color: var(--white); }

.section-sub {
  font-size: 1rem;
  color: var(--gray-500);
}

/* 滚动触发动画 */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== 三大差异化 ========== */
.differentiators {
  background: transparent;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.diff-card {
  position: relative;
  padding: var(--space-8);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.diff-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--grad-brand);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.5);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.diff-card:hover {
  transform: translateY(-8px);
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-bright);
  box-shadow: var(--shadow-neon);
}

.diff-card:hover::before { transform: scaleX(1); }

.diff-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-soft);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: var(--radius-lg);
  color: var(--tech-cyan);
  margin-bottom: 1rem;
  box-shadow: inset 0 0 18px rgba(0, 212, 255, 0.08);
}

.diff-icon svg {
  width: 32px;
  height: 32px;
  filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.45));
}

.diff-num {
  position: absolute;
  top: var(--space-8);
  right: var(--space-8);
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(126, 166, 255, 0.14);
  font-family: var(--font-mono);
  line-height: 1;
}

.diff-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.75rem;
}

.diff-desc {
  font-size: 0.92rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.diff-features {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.diff-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--gray-700);
}

.check {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.14);
  color: #2ee06a;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.65rem;
  font-weight: 700;
  box-shadow: 0 0 8px rgba(46, 224, 106, 0.25);
}

.check::after { content: '✓'; }

.diff-more {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--tech-cyan);
  margin-top: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--gray-200);
  transition: all var(--transition-fast);
}

.diff-more:hover {
  color: var(--white);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.6);
}

/* ========== 产品能力 ========== */
.product {
  background: linear-gradient(180deg, rgba(10, 16, 32, 0.5) 0%, transparent 100%);
}

.speed-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.speed-card {
  position: relative;
  padding: var(--space-8);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.speed-card.featured {
  border-color: rgba(0, 212, 255, 0.45);
  transform: scale(1.03);
  box-shadow: var(--shadow-neon);
  background: linear-gradient(165deg, rgba(20, 38, 74, 0.65) 0%, rgba(10, 16, 34, 0.75) 100%);
}

.speed-card:hover {
  transform: translateY(-4px);
  border-color: var(--glass-border-bright);
  box-shadow: var(--shadow-neon);
}

.speed-card.featured:hover { transform: scale(1.03) translateY(-4px); }

.speed-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  background: var(--gray-100);
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.featured-badge {
  background: var(--grad-brand);
  color: var(--white);
  border: none;
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.35);
}

.speed-timing {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.timing-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--tech-cyan);
  font-family: var(--font-mono);
  line-height: 1;
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.timing-unit {
  font-size: 0.82rem;
  color: var(--gray-500);
  font-weight: 500;
}

.speed-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

.speed-desc {
  font-size: 0.88rem;
  color: var(--gray-500);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.speed-meter { margin-bottom: 0.75rem; }

.meter-label {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-bottom: 0.3rem;
}

.meter-bar {
  height: 6px;
  background: var(--gray-100);
  border-radius: 3px;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--tech-cyan), var(--navy-500), var(--tech-purple));
  border-radius: 3px;
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
  transition: width 1.5s var(--ease-out);
  animation: meterGrow 1.5s var(--ease-out);
}

@keyframes meterGrow {
  from { width: 0 !important; }
}

/* ========== 场景网格 / 能力矩阵 ========== */
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.scene-card {
  position: relative;
  padding: var(--space-6) var(--space-4);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.scene-card:hover {
  border-color: var(--glass-border-bright);
  transform: translateY(-6px);
  box-shadow: var(--shadow-neon);
  background: var(--glass-bg-hover);
}

.scene-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-soft);
  border: 1px solid rgba(0, 212, 255, 0.22);
  border-radius: var(--radius-md);
  color: var(--tech-cyan);
  transition: all var(--transition-base);
}

.scene-card:hover .scene-icon {
  background: var(--grad-brand);
  color: var(--white);
  transform: scale(1.1);
  box-shadow: 0 0 22px rgba(0, 212, 255, 0.45);
}

.scene-icon svg {
  width: 24px;
  height: 24px;
}

.scene-info h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.25rem;
}

.scene-info p {
  font-size: 0.78rem;
  color: var(--gray-500);
  line-height: 1.5;
}

.capabilities-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.cap-box {
  padding: var(--space-6);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
}

.cap-box:hover {
  border-color: var(--glass-border-bright);
  box-shadow: var(--shadow-glow);
}

.cap-box h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--gray-200);
}

.cap-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.cap-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem;
  background: var(--gray-50);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--gray-700);
  transition: all var(--transition-fast);
}

.cap-item:hover {
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(0, 212, 255, 0.05);
}

.cap-item svg {
  width: 18px;
  height: 18px;
  color: var(--tech-cyan);
  flex-shrink: 0;
}

.human-types {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.human-type {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem;
  background: var(--gray-50);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.human-type:hover {
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(0, 212, 255, 0.05);
}

.type-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.25);
}

.avatar-photo {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
}

.avatar-photo::after {
  content: '';
  position: absolute;
  top: 25%;
  left: 25%;
  width: 50%;
  height: 50%;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
}

.avatar-virtual {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--tech-cyan) 0%, var(--tech-purple) 100%);
  position: relative;
  animation: pulse 3s ease-in-out infinite;
}

.avatar-premium {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--red-accent) 0%, #f59e0b 100%);
  position: relative;
}

.avatar-premium::after {
  content: '★';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--white);
  font-size: 1.2rem;
}

.type-info strong {
  display: block;
  font-size: 0.88rem;
  color: var(--gray-900);
  margin-bottom: 0.1rem;
}

.type-info span {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.cap-note {
  font-size: 0.78rem;
  color: var(--red-accent);
  background: rgba(255, 92, 73, 0.08);
  border: 1px solid rgba(255, 92, 73, 0.2);
  padding: 0.6rem;
  border-radius: var(--radius-sm);
  line-height: 1.5;
}

/* ========== 场景方案（深色全宽板块） ========== */
.scenes-solutions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.scene-solution {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all var(--transition-base);
}

.scene-solution:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(0, 212, 255, 0.35);
  transform: translateX(8px);
  box-shadow: -4px 0 24px rgba(0, 212, 255, 0.1);
}

.sol-label {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1rem;
  padding-left: 1rem;
  border-left: 3px solid var(--tech-cyan);
  text-shadow: 0 0 14px rgba(0, 212, 255, 0.3);
}

.sol-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.sol-col { position: relative; }

.col-title {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy-200);
  margin-bottom: 0.5rem;
}

.sol-col p {
  font-size: 0.88rem;
  color: var(--navy-100);
  line-height: 1.6;
}

.sol-col.highlight {
  padding: 0.75rem 1rem;
  background: rgba(255, 92, 73, 0.1);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 92, 73, 0.25);
}

.sol-col.highlight .col-title { color: var(--red-accent); }

.sol-col.highlight p {
  color: var(--white);
  font-weight: 500;
}

/* ========== 部署方式 ========== */
.deployment { background: transparent; }

.deploy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.deploy-card {
  position: relative;
  padding: var(--space-8);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.deploy-card.featured {
  border-color: rgba(0, 212, 255, 0.4);
  background: linear-gradient(165deg, rgba(20, 38, 74, 0.6) 0%, rgba(10, 16, 34, 0.7) 100%);
  box-shadow: var(--shadow-neon);
}

.deploy-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--grad-brand);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.4);
  white-space: nowrap;
}

.deploy-card:hover {
  transform: translateY(-4px);
  border-color: var(--glass-border-bright);
  box-shadow: var(--shadow-neon);
}

.deploy-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-soft);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: var(--radius-lg);
  color: var(--tech-cyan);
}

.deploy-icon svg {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.4));
}

.deploy-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1rem;
}

.deploy-desc { margin-bottom: 1.5rem; }

.deploy-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
}

.row-label {
  color: var(--gray-500);
  flex-shrink: 0;
  min-width: 3rem;
}

.row-val { color: var(--gray-800); }

.deploy-link {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--tech-cyan);
  padding: 0.5rem 0;
  border-bottom: 1px dashed rgba(0, 212, 255, 0.4);
  transition: all var(--transition-fast);
}

.deploy-link:hover {
  color: var(--white);
  border-bottom-color: var(--tech-purple);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.55);
}

/* ========== 合规与资质 ========== */
.compliance {
  background: linear-gradient(180deg, transparent 0%, rgba(10, 16, 32, 0.5) 100%);
}

.compliance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.compliance-item {
  padding: var(--space-6);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.compliance-item:hover {
  border-color: var(--glass-border-bright);
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}

.comp-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-soft);
  border: 1px solid rgba(0, 212, 255, 0.22);
  border-radius: var(--radius-md);
  color: var(--tech-cyan);
  margin-bottom: 1rem;
}

.comp-icon svg {
  width: 28px;
  height: 28px;
  filter: drop-shadow(0 0 5px rgba(0, 212, 255, 0.45));
}

.compliance-item h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

.compliance-item p {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.7;
}

.compliance-banner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-8);
  background: linear-gradient(135deg, rgba(13, 24, 48, 0.9) 0%, rgba(19, 34, 74, 0.85) 100%);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: var(--radius-xl);
  color: var(--white);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-neon);
}

.compliance-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.18) 0%, transparent 70%);
  pointer-events: none;
  animation: glowBreathe 6s ease-in-out infinite;
}

.banner-icon {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-lg);
  color: var(--tech-cyan);
}

.banner-content { flex: 1; }

.banner-content h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.banner-content p {
  font-size: 0.88rem;
  color: var(--navy-200);
}

.banner-btn {
  flex-shrink: 0;
  padding: 0.75rem 1.5rem;
  background: var(--grad-brand);
  color: var(--white);
  font-weight: 600;
  font-size: 0.88rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
  transition: all var(--transition-base);
}

.banner-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.45), 0 8px 40px rgba(124, 58, 237, 0.35);
}

/* ========== 定价框架 ========== */
.pricing { background: transparent; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-10);
}

.price-card {
  padding: var(--space-6);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-base);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.price-card:hover {
  border-color: var(--glass-border-bright);
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}

.price-type {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--tech-cyan);
  margin-bottom: 0.25rem;
  text-shadow: 0 0 14px rgba(0, 212, 255, 0.4);
}

.price-desc {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-bottom: 1rem;
}

.price-detail {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.price-detail span {
  font-size: 0.82rem;
  color: var(--gray-700);
  padding: 0.4rem;
  background: var(--gray-50);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.price-detail span:hover {
  border-color: rgba(0, 212, 255, 0.25);
}

.cta-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-8);
  background: var(--grad-soft);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: var(--radius-xl);
  box-shadow: inset 0 0 40px rgba(0, 212, 255, 0.05);
}

.cta-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.25rem;
}

.cta-content p {
  font-size: 0.88rem;
  color: var(--gray-500);
}

/* ========== FAQ ========== */
.faq { background: rgba(10, 16, 32, 0.45); }

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--gray-200);
  transition: background var(--transition-base);
}

.faq-item:first-child { border-top: 1px solid var(--gray-200); }

.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-q:hover { color: var(--tech-cyan); }

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--gray-400);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  margin-left: 1rem;
}

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

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-base);
}

.faq-item.active .faq-a {
  max-height: 300px;
  padding-bottom: 1.25rem;
}

.faq-a p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.7;
  padding-right: 2rem;
}

/* ========== 联系我们 ========== */
.contact {
  background:
    radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.12) 0%, transparent 50%),
    linear-gradient(180deg, #0a1329 0%, #070d1a 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.contact-wrap {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.contact-left .section-tag {
  background: rgba(0, 212, 255, 0.12);
  border-color: rgba(0, 212, 255, 0.3);
  color: var(--tech-cyan);
}

.contact-desc {
  font-size: 1rem;
  color: var(--navy-200);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--navy-200);
}

.info-item svg {
  color: var(--tech-cyan);
  flex-shrink: 0;
  filter: drop-shadow(0 0 4px rgba(0, 212, 255, 0.5));
}

.contact-form {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(0, 212, 255, 0.18);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 0 50px rgba(0, 212, 255, 0.08);
}

.contact-form h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--white);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group { margin-bottom: 1rem; }

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--navy-200);
  margin-bottom: 0.4rem;
}

.required { color: var(--red-accent); }

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(126, 166, 255, 0.2);
  border-radius: var(--radius-sm);
  color: var(--white);
  transition: all var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(163, 196, 255, 0.35);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--tech-cyan);
  background: rgba(0, 212, 255, 0.06);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15), 0 0 20px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.scene-checkboxes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.scene-checkboxes label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--navy-100);
  cursor: pointer;
}

.scene-checkboxes input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--tech-cyan);
}

.form-privacy {
  font-size: 0.72rem;
  color: var(--navy-300);
  text-align: center;
  margin-top: 1rem;
}

/* ========== 页脚 ========== */
.footer {
  position: relative;
  background: #030509;
  color: var(--navy-200);
  padding: var(--space-12) 0 var(--space-6);
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.5), rgba(124, 58, 237, 0.5), transparent);
}

.footer::after {
  content: '';
  position: absolute;
  bottom: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 240px;
  background: radial-gradient(ellipse, rgba(61, 123, 253, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.1fr 2fr;
  gap: var(--space-10);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid rgba(126, 166, 255, 0.1);
  margin-bottom: var(--space-6);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-brand .logo-icon {
  color: var(--tech-cyan);
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.5));
}

.brand-info .brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.15rem;
}

.brand-info .brand-sub {
  font-size: 0.78rem;
  color: var(--navy-300);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.link-group h5 {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.link-group a {
  display: block;
  font-size: 0.82rem;
  color: var(--navy-200);
  padding: 0.25rem 0;
  transition: all var(--transition-fast);
}

.link-group a:hover {
  color: var(--tech-cyan);
  text-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
  transform: translateX(3px);
}

.footer-bottom { text-align: center; }

.footer-legal {
  font-size: 0.75rem;
  color: var(--navy-300);
}

.footer-products {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}
.fp-label {
  font-size: 0.72rem;
  color: var(--navy-400);
  letter-spacing: 0.04em;
}
.fp-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  max-width: 780px;
}
.fp-chip {
  font-size: 0.72rem;
  color: var(--navy-300);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.fp-chip:hover { color: var(--white); border-color: rgba(0,212,255,0.4); }
.fp-chip-current {
  color: var(--white);
  background: rgba(0,212,255,0.14);
  border-color: rgba(0,212,255,0.5);
  font-weight: 600;
}

/* 旗下产品家族网格（关于我们页） */
.product-family-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.pf-card {
  background: var(--off-white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: all 0.25s ease;
}
.pf-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(30,58,95,0.10); }
.pf-card.featured {
  border-color: var(--tech-cyan);
  background: linear-gradient(135deg, rgba(0,212,255,0.06), rgba(0,212,255,0.01));
}
.pf-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy-700);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.pf-now {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--white);
  background: var(--tech-cyan);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
}
.pf-desc {
  font-size: 0.85rem;
  color: var(--gray-700);
  line-height: 1.7;
}
@media (max-width: 768px) {
  .product-family-grid { grid-template-columns: 1fr; }
}

.footer-sep {
  margin: 0 0.5rem;
  color: var(--navy-500);
}

/* 炫引擎标注 */
.engine-credit {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px dashed rgba(126, 166, 255, 0.14);
  text-align: center;
  font-size: 0.8rem;
  color: var(--gray-500);
  letter-spacing: 0.02em;
}

.engine-credit a {
  font-weight: 600;
  background: linear-gradient(90deg, var(--tech-cyan), var(--tech-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: filter var(--transition-fast);
}

.engine-credit a:hover {
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.6)) brightness(1.2);
}

/* ========== 首页板块 ========== */
.overview { background: rgba(10, 16, 32, 0.45); }

.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  max-width: 960px;
  margin: 0 auto;
}

.overview-col {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--transition-base);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.overview-col:hover {
  border-color: var(--glass-border-bright);
  box-shadow: var(--shadow-neon);
}

.overview-col-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--gray-200);
}

.overview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin-bottom: 0.75rem;
}

.overview-table th,
.overview-table td {
  padding: 0.6rem 0.4rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.overview-table th {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.overview-table td { color: var(--gray-700); }

.overview-note {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-bottom: 1.25rem;
}

.overview-col .btn-secondary {
  font-size: 0.85rem;
  padding: 0.55rem 1.1rem;
  background: var(--grad-brand);
  color: var(--white);
  border: none;
  box-shadow: 0 4px 18px rgba(0, 212, 255, 0.28);
}

.overview-col .btn-secondary:hover {
  background-position: 100% 50%;
  transform: translateY(-1px);
}

.overview-scenes {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.overview-scenes li {
  padding: 0.55rem 0.75rem;
  background: var(--gray-50);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}

.overview-scenes li:hover {
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(0, 212, 255, 0.05);
}

.overview-scenes strong { color: var(--gray-900); }
.overview-scenes span { color: var(--gray-500); }

.customers { background: transparent; }

.customer-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-5);
}

.customer-card {
  padding: var(--space-6) var(--space-5);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

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

.customer-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--tech-cyan);
  margin-bottom: 0.5rem;
}

.customer-card p {
  font-size: 0.8rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* ========== 底部 CTA ========== */
.bottom-cta {
  background:
    radial-gradient(circle at 30% 50%, rgba(0, 212, 255, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(124, 58, 237, 0.14) 0%, transparent 50%),
    linear-gradient(180deg, #0a1329 0%, #070d1a 100%);
  position: relative;
  overflow: hidden;
}

.bottom-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  pointer-events: none;
}

.cta-card {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-12) var(--space-6);
}

.cta-card h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 0.75rem;
  text-shadow: 0 0 40px rgba(0, 212, 255, 0.3);
}

.cta-card p {
  font-size: 0.95rem;
  color: var(--navy-200);
  margin-bottom: 2rem;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
  padding: 1rem 0;
  background: rgba(5, 9, 18, 0.6);
  border-bottom: 1px solid var(--gray-200);
  backdrop-filter: blur(10px);
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  list-style: none;
  font-size: 0.85rem;
  color: var(--gray-500);
}

.breadcrumb li a {
  color: var(--tech-cyan);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.breadcrumb li a:hover {
  color: var(--white);
  text-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}

.breadcrumb li[aria-current="page"] {
  color: var(--gray-800);
  font-weight: 600;
}

.breadcrumb li + li::before {
  content: '/';
  margin-right: 0.5rem;
  color: var(--gray-300);
}

/* ========== 子页面顶部 ========== */
.page-hero {
  padding: 7rem 0 var(--space-10);
  background:
    radial-gradient(700px 400px at 80% 0%, rgba(124, 58, 237, 0.18), transparent 60%),
    linear-gradient(180deg, #04070f 0%, #081020 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.4), transparent);
}

.page-hero-content {
  position: relative;
  z-index: 1;
  max-width: 920px;
}

.page-hero-content h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  text-shadow: 0 0 40px rgba(0, 212, 255, 0.25);
}

.page-hero-content .page-hero-sub {
  font-size: 1.05rem;
  color: var(--navy-200);
  line-height: 1.7;
}

/* ========== 数字人展示位（通用占位） ========== */
.showcase-slot {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 2px dashed rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(135deg, rgba(0, 212, 255, 0.03) 0%, rgba(124, 58, 237, 0.04) 100%);
  background-size: 20px 20px, 20px 20px, 100% 100%;
  overflow: hidden;
  transition: all var(--transition-base);
}

.showcase-slot:hover {
  border-color: var(--tech-cyan);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.18), inset 0 0 30px rgba(0, 212, 255, 0.05);
}

.slot-body {
  position: relative;
  z-index: 1;
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  text-align: center;
}

.slot-placeholder-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 0.75rem;
  border-radius: 50%;
  background: var(--grad-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.35);
  animation: iconBreathe 3s ease-in-out infinite;
}

@keyframes iconBreathe {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50% { transform: scale(1.08); opacity: 1; }
}

.slot-placeholder-icon svg {
  width: 28px;
  height: 28px;
}

.slot-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--tech-cyan);
  margin-bottom: 0.25rem;
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.slot-hint {
  font-size: 0.75rem;
  color: var(--gray-400);
}

.showcase-slot .ai-watermark {
  position: absolute;
  bottom: 10px;
  right: 10px;
  z-index: 3;
}

/* 大尺寸展示位 */
.showcase-slot.large { min-height: 340px; }

.showcase-slot.large .slot-placeholder-icon {
  width: 80px;
  height: 80px;
}

.showcase-slot.large .slot-placeholder-icon svg {
  width: 40px;
  height: 40px;
}

.showcase-slot.large .slot-label { font-size: 1rem; }

/* 横条展示位 */
.showcase-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.showcase-strip .showcase-slot { min-height: 180px; }

/* 场景小预览 */
.scene-preview {
  position: relative;
  margin-top: var(--space-4);
  min-height: 140px;
  border: 1.5px dashed rgba(0, 212, 255, 0.28);
  border-radius: var(--radius-md);
  background:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    rgba(255, 255, 255, 0.02);
  background-size: 16px 16px, 16px 16px, 100% 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.scene-preview:hover {
  border-color: var(--tech-cyan);
  background-color: rgba(0, 212, 255, 0.05);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.15);
}

.scene-preview .slot-placeholder-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--tech-cyan), var(--tech-purple));
}

.scene-preview .slot-placeholder-icon svg {
  width: 18px;
  height: 18px;
}

.scene-preview .slot-label {
  font-size: 0.78rem;
  color: var(--navy-100);
}

.scene-preview .slot-hint {
  font-size: 0.7rem;
  color: var(--navy-300);
}

.scene-preview .ai-watermark {
  position: absolute;
  bottom: 6px;
  right: 6px;
}

/* 档位展示卡 */
.tier-showcase-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.tier-showcase {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.tier-showcase:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
  border-color: var(--glass-border-bright);
}

.tier-showcase .showcase-slot {
  min-height: 200px;
  border: none;
  border-radius: 0;
}

.tier-showcase-head {
  padding: 0.75rem 1rem;
  background: rgba(0, 212, 255, 0.07);
  border-bottom: 1px solid rgba(0, 212, 255, 0.15);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--navy-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tier-showcase-head .tier-speed {
  font-size: 0.72rem;
  color: var(--tech-cyan);
  font-weight: 500;
  font-family: var(--font-mono);
}

/* ========== 相关阅读（SEO 内链） ========== */
.related-reads {
  padding: var(--space-12) 0 var(--space-16);
}

/* 硬件建议参考：表格 + 整机示意图 */
.hw-flex {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.hw-table-wrap { flex: 1.15; min-width: 0; }

.hw-figure {
  flex: 1;
  margin: 0;
}

.hw-figure img {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid rgba(126, 166, 255, 0.18);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.35);
}

.hw-figure figcaption {
  margin-top: 0.6rem;
  font-size: 0.75rem;
  color: var(--gray-400);
  text-align: center;
}

@media (max-width: 900px) {
  .hw-flex { flex-direction: column; align-items: stretch; }
}

.related-reads .container {
  max-width: var(--container-max);
}

.related-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1.25rem;
}

.related-title::before {
  content: '';
  width: 4px;
  height: 1.1em;
  border-radius: 2px;
  background: var(--grad-brand);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.related-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.related-links a {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.1rem 1.25rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.related-links a::after {
  content: '→';
  position: absolute;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%) translateX(-6px);
  color: var(--tech-cyan);
  opacity: 0;
  transition: all var(--transition-base);
}

.related-links a:hover {
  border-color: var(--glass-border-bright);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
  background: var(--glass-bg-hover);
}

.related-links a:hover::after {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.related-links strong {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--gray-900);
  padding-right: 1.5rem;
}

.related-links span {
  font-size: 0.78rem;
  color: var(--gray-500);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .showcase-strip { grid-template-columns: repeat(2, 1fr); }
  .tier-showcase-row { grid-template-columns: 1fr; }
  .related-links { grid-template-columns: repeat(3, 1fr); }

  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    min-height: auto;
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .hero-right {
    max-width: 100%;
    width: 100%;
    margin: 0;
  }

  .diff-grid { grid-template-columns: 1fr; }
  .speed-grid { grid-template-columns: 1fr; }
  .speed-card.featured { transform: none; }
  .scenes-grid { grid-template-columns: repeat(3, 1fr); }
  .capabilities-row { grid-template-columns: 1fr; }
  .deploy-grid { grid-template-columns: 1fr; }
  .compliance-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: var(--space-8); }
}

@media (max-width: 768px) {
  html { scroll-padding-top: 64px; }

  .navbar { padding: 0.75rem 0; }

  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(4, 8, 16, 0.97);
    backdrop-filter: blur(20px);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
  }

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

  .nav-toggle { display: flex; }

  .hero { padding-top: 5rem; }

  .hero-stats { flex-wrap: wrap; gap: 1rem; }
  .stat-divider { display: none; }
  .stat-item { flex: 1; min-width: 70px; }
  .hero-right { max-width: 100%; }

  .section { padding: var(--space-16) 0; }

  .scenes-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
  .compliance-grid { grid-template-columns: 1fr; }
  .compliance-banner { flex-direction: column; text-align: center; padding: var(--space-6); }
  .pricing-grid { grid-template-columns: 1fr 1fr; }
  .cta-banner { flex-direction: column; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .related-links { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .scenes-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .sol-grid { grid-template-columns: 1fr; }

  .hero-cta { flex-direction: column; }

  .hero-cta .btn {
    justify-content: center;
    width: 100%;
  }
}

/* ========== 降低动效偏好 ========== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html { scroll-behavior: auto; }
  .bg-stars, .cursor-glow { display: none; }
}

/* ========== 数字代言人板块 ========== */
.spoke-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-10);
  align-items: center;
}

.spoke-video {
  max-width: 540px;
  margin: 0 auto;
  width: 100%;
}

.spoke-copy h3 {
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--white);
}

.spoke-copy p {
  color: var(--gray-400);
  margin-bottom: var(--space-5);
  line-height: 1.8;
}

.spoke-list {
  list-style: none;
  margin-bottom: var(--space-6);
  display: grid;
  gap: 0.65rem;
}

.spoke-list li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--gray-300);
  font-size: 0.95rem;
}

/* ========== 信任条 ========== */
.trust-strip {
  padding: var(--space-8) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.02);
}

.trust-strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem 1.25rem;
  text-align: center;
}

.ts-item {
  font-size: 0.9rem;
  color: var(--gray-400);
}

.ts-sep {
  color: var(--gray-600);
}

.ts-link {
  color: var(--tech-cyan);
  transition: text-shadow var(--transition-fast);
}

.ts-link:hover {
  text-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
}

@media (max-width: 900px) {
  .spoke-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .spoke-video { max-width: 100%; }
}