/* ============================================
   云星 AI-SALES - 高大上升級版样式表
   ============================================ */

:root {
  --bg: #030711;
  --bg-soft: #07111f;
  --bg-deep: #010510;
  --card: rgba(255, 255, 255, 0.075);
  --card-strong: rgba(255, 255, 255, 0.12);
  --line: rgba(255, 255, 255, 0.14);
  --line-light: rgba(255, 255, 255, 0.25);
  --text: #f7fbff;
  --muted: #9fb0c8;
  --cyan: #3ff2ff;
  --cyan-dim: rgba(63, 242, 255, 0.4);
  --blue: #4387ff;
  --violet: #8c6cff;
  --violet-dim: rgba(140, 108, 255, 0.4);
  --gold: #f5d187;
  --gold-dim: rgba(245, 209, 135, 0.4);
  --green: #48ffc9;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.38);
  --radius: 28px;
  --glow-cyan: 0 0 60px rgba(63, 242, 255, 0.5), 0 0 120px rgba(63, 242, 255, 0.3);
  --glow-gold: 0 0 60px rgba(245, 209, 135, 0.5), 0 0 120px rgba(245, 209, 135, 0.3);
  font-family: Inter, "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
}

/* 全局背景：PC + 手机统一深蓝黑渐变
 * —— 用简洁可靠的写法：深黑底 + 一个中央蓝色径向 + 上下线性渐变
 * —— 避免 mobile 浏览器因为复杂多重 radial-gradient 做性能降级导致变浅
 */
html, body {
  background-color: #01030a;
  background-image:
    radial-gradient(circle at 50% 35%, rgba(67, 135, 255, 0.18) 0%, transparent 55%),
    radial-gradient(circle at 15% 15%, rgba(63, 242, 255, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 70%, rgba(140, 108, 255, 0.10) 0%, transparent 45%),
    radial-gradient(circle at 50% 100%, rgba(245, 209, 135, 0.06) 0%, transparent 55%),
    linear-gradient(180deg, #01030a 0%, #030816 45%, #01030a 100%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
  min-height: 100vh;
}

/* 全局列表重置：避免浏览器默认 bullet 与自定义符号重复显示 */
ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ============================================
   移动端背景：简洁可靠的深蓝黑底色
   —— 用固定深色替代依赖GPU blur的复杂极光，手机100%一致渲染
   ============================================ */
@media (max-width: 980px) {
  html, body {
    background-color: #01030a;
    background-image:
      radial-gradient(circle at 50% 35%, rgba(67, 135, 255, 0.18) 0%, transparent 55%),
      radial-gradient(circle at 15% 15%, rgba(63, 242, 255, 0.12) 0%, transparent 45%),
      radial-gradient(circle at 85% 70%, rgba(140, 108, 255, 0.10) 0%, transparent 45%),
      radial-gradient(circle at 50% 100%, rgba(245, 209, 135, 0.06) 0%, transparent 55%),
      linear-gradient(180deg, #01030a 0%, #030816 45%, #01030a 100%);
    background-size: 100% 100%;
  }

  /* 固定层改为纯色深遮罩，不再依赖GPU blur */
  .mesh-gradient {
    background: rgba(1, 5, 16, 0.55);
    animation: none;
  }

  .aurora {
    opacity: 0.12;
    filter: none;
    -webkit-filter: none;
    animation: none;
  }

  .aurora-one {
    top: 8%;
    left: -10%;
    background: rgba(63, 242, 255, 0.5);
  }

  .aurora-two {
    right: -10%;
    bottom: 5%;
    background: rgba(140, 108, 255, 0.4);
  }

  .aurora-three {
    top: 50%;
    left: 50%;
    background: rgba(245, 209, 135, 0.2);
    opacity: 0.08;
  }

  .grid-lines {
    opacity: 0.04;
  }
}

@media (max-width: 640px) {
  html, body {
    background-color: #01030a;
    background-image:
      radial-gradient(circle at 50% 35%, rgba(67, 135, 255, 0.18) 0%, transparent 55%),
      radial-gradient(circle at 15% 15%, rgba(63, 242, 255, 0.12) 0%, transparent 45%),
      radial-gradient(circle at 85% 70%, rgba(140, 108, 255, 0.10) 0%, transparent 45%),
      radial-gradient(circle at 50% 100%, rgba(245, 209, 135, 0.06) 0%, transparent 55%),
      linear-gradient(180deg, #01030a 0%, #030816 45%, #01030a 100%);
  }
}

/* ============================================
   背景效果 - 粒子星空 + 动态极光
   ============================================ */
.starfield {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: white;
  border-radius: 50%;
  opacity: 0;
  animation: twinkle var(--duration, 3s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes twinkle {
  0%, 100% { opacity: 0; transform: scale(0.5); }
  50% { opacity: var(--max-opacity, 0.8); transform: scale(1); }
}

.mesh-gradient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 60% 40% at 20% 10%, rgba(63, 242, 255, 0.12), transparent 60%),
    radial-gradient(ellipse 50% 35% at 80% 20%, rgba(140, 108, 255, 0.10), transparent 60%),
    radial-gradient(ellipse 50% 30% at 50% 80%, rgba(245, 209, 135, 0.07), transparent 60%),
    radial-gradient(ellipse 80% 50% at 0% 100%, rgba(67, 135, 255, 0.08), transparent 50%),
    linear-gradient(180deg, rgba(3, 7, 17, 0.6) 0%, rgba(5, 13, 28, 0.4) 40%, rgba(3, 7, 17, 0.6) 100%);
  animation: meshMove 20s ease-in-out infinite alternate;
}

@keyframes meshMove {
  0% { filter: hue-rotate(0deg) brightness(1); }
  100% { filter: hue-rotate(15deg) brightness(1.1); }
}

.aurora {
  position: fixed;
  width: 50rem;
  height: 50rem;
  border-radius: 999px;
  filter: blur(100px);
  -webkit-filter: blur(100px);
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
  animation: auroraFloat 15s ease-in-out infinite;
}

.aurora-one {
  top: 10%;
  left: -15%;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  animation-delay: 0s;
}

.aurora-two {
  right: -15%;
  bottom: 5%;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  animation-delay: -5s;
}

.aurora-three {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(245, 209, 135, 0.15), transparent 70%);
  animation: auroraPulse 8s ease-in-out infinite;
}

@keyframes auroraFloat {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.2; }
  33% { transform: translate(30px, -20px) scale(1.05); opacity: 0.25; }
  66% { transform: translate(-20px, 30px) scale(0.95); opacity: 0.15; }
}

@keyframes auroraPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.1; }
  50% { transform: translate(-50%, -50%) scale(1.3); opacity: 0.2; }
}

/* Noise纹理 */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
  z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 240 240' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.45'/%3E%3C/svg%3E");
}

/* ============================================
   科技感元素 - 网格线 / 数据流 / 扫描线
   ============================================ */
.grid-lines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(63, 242, 255, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 242, 255, 0.5) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  animation: gridMove 40s linear infinite;
}

@keyframes gridMove {
  0% { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

/* 数据流线条 - 从上到下流动 */
.data-flow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.data-line {
  position: absolute;
  width: 2px;
  height: 120px;
  background: linear-gradient(180deg, transparent, rgba(63, 242, 255, 0.8), transparent);
  opacity: 0;
  animation: dataDrop 4s ease-in infinite;
}

@keyframes dataDrop {
  0% {
    transform: translateY(-100px);
    opacity: 0;
  }
  10% { opacity: 0.7; }
  50% { opacity: 0.4; }
  90% { opacity: 0; }
  100% {
    transform: translateY(100vh);
    opacity: 0;
  }
}

/* 扫描线效果 */
.scan-line {
  position: fixed;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(63, 242, 255, 0.8), rgba(245, 209, 135, 0.8), transparent);
  box-shadow: 0 0 20px rgba(63, 242, 255, 0.7), 0 0 60px rgba(245, 209, 135, 0.4);
  z-index: 0;
  pointer-events: none;
  animation: scanMove 8s ease-in-out infinite;
}

@keyframes scanMove {
  0% { top: 0; opacity: 0; }
  10% { opacity: 0.6; }
  50% { opacity: 0.3; }
  90% { opacity: 0; }
  100% { top: 100vh; opacity: 0; }
}

/* ============================================
   头部导航 - 玻璃拟态增强
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(1200px, calc(100% - 48px));
  margin: 20px auto 0;
  padding: 14px 20px 14px 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  background: rgba(5, 10, 22, 0.75);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow:
    0 25px 80px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset,
    0 0 80px rgba(63, 242, 255, 0.05);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.scrolled {
  margin-top: 12px;
  width: min(1200px, calc(100% - 32px));
  padding: 10px 18px;
  background: rgba(5, 10, 22, 0.92);
  border-color: rgba(63, 242, 255, 0.2);
  box-shadow:
    0 30px 100px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset,
    0 0 100px rgba(63, 242, 255, 0.1);
}

/* Logo */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.brand:hover {
  transform: scale(1.02);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 16px;
  color: #001016;
  background: linear-gradient(135deg, var(--cyan), var(--gold));
  box-shadow:
    0 0 40px rgba(63, 242, 255, 0.4),
    0 0 80px rgba(245, 209, 135, 0.2);
  animation: brandGlow 3s ease-in-out infinite alternate;
}

.brand-logo {
  width: 52px;
  height: 52px;
  object-fit: cover;
  display: block;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(63, 242, 255, 0.2), rgba(245, 209, 135, 0.15));
  border: 2px solid rgba(63, 242, 255, 0.3);
  box-shadow:
    0 0 30px rgba(63, 242, 255, 0.4),
    0 0 60px rgba(245, 209, 135, 0.15),
    0 4px 12px rgba(0, 0, 0, 0.3);
  animation: logoFloat 4s ease-in-out infinite, logoGlow 3s ease-in-out infinite alternate;
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-2px); }
}

@keyframes logoGlow {
  0% {
    box-shadow: 0 0 30px rgba(63, 242, 255, 0.3), 0 0 60px rgba(245, 209, 135, 0.1), 0 4px 12px rgba(0, 0, 0, 0.3);
    border-color: rgba(63, 242, 255, 0.25);
  }
  100% {
    box-shadow: 0 0 50px rgba(63, 242, 255, 0.5), 0 0 100px rgba(245, 209, 135, 0.2), 0 4px 12px rgba(0, 0, 0, 0.3);
    border-color: rgba(63, 242, 255, 0.5);
  }
}

.brand-text {
  display: block;
}

/* 汉堡按钮 - 默认隐藏（PC端不需要） */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: rgba(63, 242, 255, 0.08);
  border: 1px solid rgba(63, 242, 255, 0.25);
  border-radius: 14px;
  padding: 12px 10px;
  cursor: pointer;
  transition: all 0.3s ease;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  justify-content: center;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  transition: all 0.3s ease;
  box-shadow: 0 0 8px rgba(63, 242, 255, 0.5);
}

.menu-toggle:hover {
  background: rgba(63, 242, 255, 0.15);
  border-color: var(--cyan);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端菜单面板 */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(3, 7, 17, 0.97);
  backdrop-filter: blur(30px) saturate(160%);
  -webkit-backdrop-filter: blur(30px) saturate(160%);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease, visibility 0.35s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-menu-content {
  width: 100%;
  max-width: 500px;
  padding: 40px 32px;
  text-align: center;
  transform: translateY(20px);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
}

.mobile-menu.active .mobile-menu-content {
  transform: translateY(0);
  opacity: 1;
}

.mobile-menu-header {
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(63, 242, 255, 0.15);
}

.mobile-menu-header strong {
  display: block;
  font-size: 20px;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.mobile-menu-header span {
  display: block;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--cyan);
  text-transform: uppercase;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav a {
  display: block;
  padding: 18px 24px;
  font-size: 17px;
  font-weight: 600;
  color: #f7fbff;
  border-radius: 16px;
  transition: all 0.25s ease;
  position: relative;
  text-decoration: none;
}

.mobile-nav a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 0;
  background: linear-gradient(180deg, var(--cyan), var(--gold));
  border-radius: 2px;
  transition: height 0.25s ease;
  box-shadow: 0 0 12px rgba(63, 242, 255, 0.6);
}

.mobile-nav a:hover {
  background: rgba(63, 242, 255, 0.08);
  color: var(--cyan);
  transform: translateX(4px);
}

.mobile-nav a:hover::before {
  height: 60%;
}

.mobile-nav a.mobile-cta {
  margin-top: 24px;
  padding: 18px 32px;
  background: linear-gradient(135deg, rgba(63, 242, 255, 0.2), rgba(245, 209, 135, 0.15));
  border: 1px solid rgba(63, 242, 255, 0.4);
  color: var(--cyan);
  font-weight: 800;
  letter-spacing: 0.05em;
}

.mobile-nav a.mobile-cta::before {
  display: none;
}

.mobile-nav a.mobile-cta:hover {
  background: linear-gradient(135deg, rgba(63, 242, 255, 0.3), rgba(245, 209, 135, 0.25));
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(63, 242, 255, 0.2);
}

@keyframes brandGlow {
  0% { box-shadow: 0 0 30px rgba(63, 242, 255, 0.4), 0 0 60px rgba(245, 209, 135, 0.2); }
  100% { box-shadow: 0 0 50px rgba(63, 242, 255, 0.6), 0 0 100px rgba(245, 209, 135, 0.3); }
}

.brand strong {
  display: block;
  font-size: 16px;
  letter-spacing: 0.04em;
  font-weight: 800;
  color: #ffffff !important;
  text-shadow: 0 0 20px rgba(63, 242, 255, 0.3);
}

.brand em {
  display: block;
  color: rgba(255, 255, 255, 0.7) !important;
  font-size: 11px;
  font-style: normal;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

/* 导航 */
.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  font-weight: 600;
}

.nav a {
  position: relative;
  transition: all 0.3s ease;
  padding: 4px 0;
  color: #ffffff !important;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  border-radius: 2px;
  transition: width 0.3s ease;
  box-shadow: 0 0 8px rgba(63, 242, 255, 0.6);
}

.nav a:hover {
  color: var(--cyan) !important;
  text-shadow: 0 0 12px rgba(63, 242, 255, 0.7);
}

.nav a:hover::after {
  width: 100%;
}

/* CTA按钮 */
.header-cta {
  padding: 12px 24px;
  border-radius: 999px;
  color: #001119;
  font-weight: 800;
  font-size: 14px;
  background: linear-gradient(135deg, var(--cyan), #a4f8ff);
  box-shadow:
    0 8px 30px rgba(63, 242, 255, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.2) inset;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.header-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow:
    0 12px 40px rgba(63, 242, 255, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.3) inset;
}

.header-cta:hover::before {
  transform: translateX(100%);
}

/* ============================================
   主内容区域
   ============================================ */
.section-pad {
  position: relative;
  z-index: 2;
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 120px 0;
}

.section-pad.compact {
  padding: 90px 0;
}

/* 引导标识 */
.eyebrow, .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 20px var(--green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.7; }
}

/* ============================================
   Hero 区域 - 增强版
   ============================================ */
.hero {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  align-items: center;
  gap: 60px;
  min-height: 100vh;
  padding-top: 100px;
  padding-bottom: 80px;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -5% 0 0 0;
  background:
    radial-gradient(ellipse 60% 40% at 30% 30%, rgba(63, 242, 255, 0.08), transparent 60%),
    radial-gradient(ellipse 50% 30% at 80% 70%, rgba(140, 108, 255, 0.05), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* 手机版 hero 区域：和 PC 版一样，不加额外覆盖层 */
@media (max-width: 980px) {
  .hero::before {
    background: none;
  }
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-copy {
  max-width: 640px;
}

.hero h1 {
  margin: 20px 0 24px;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-size: clamp(2.2rem, 4.5vw, 4rem);
  font-weight: 900;
  word-break: keep-all;
  overflow-wrap: break-word;
  line-break: loose;
  white-space: normal;
  background: linear-gradient(135deg, var(--text) 0%, var(--text) 50%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-lead {
  max-width: 600px;
  font-size: 18px;
  line-height: 1.75;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 40px;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 28px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 15px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.2) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.btn:hover::before {
  transform: translateX(100%);
}

.btn.primary {
  color: #001018;
  background: linear-gradient(135deg, var(--cyan), var(--gold));
  box-shadow:
    0 25px 60px rgba(63, 242, 255, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.2) inset;
}

.btn.primary:hover {
  transform: translateY(-3px);
  box-shadow:
    0 30px 80px rgba(63, 242, 255, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.3) inset;
}

.btn.ghost {
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  color: #ffffff;
}

.btn.ghost:hover {
  border-color: var(--cyan);
  background: rgba(63, 242, 255, 0.12);
  color: #ffffff;
  transform: translateY(-3px);
}

/* 数据指标 */
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 50px;
}

.hero-metrics > div {
  padding: 20px 22px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  backdrop-filter: blur(20px);
  transition: all 0.3s ease;
}

.hero-metrics > div:hover {
  border-color: rgba(63, 242, 255, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.hero-metrics strong {
  display: block;
  font-size: 30px;
  font-weight: 900;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--cyan), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-metrics span {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
  display: block;
}

/* Hero 视觉区域 */
.hero-visual {
  position: relative;
}

.video-card {
  position: relative;
  overflow: hidden;
  padding: 14px;
  border: 1px solid rgba(63, 242, 255, 0.3);
  border-radius: 36px;
  background: linear-gradient(145deg, rgba(63, 242, 255, 0.12), rgba(140, 108, 255, 0.08));
  box-shadow:
    0 50px 140px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow:
    0 60px 160px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(63, 242, 255, 0.15),
    0 0 0 1px rgba(63, 242, 255, 0.2) inset,
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.video-card video {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 26px;
  background: #000;
}

/* 视频控件：视频下方居中控制条 — 播放/暂停 + 状态 + 全屏 */
.video-controls {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 6px 8px 6px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  z-index: 5;
  user-select: none;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease;
  opacity: 0.95;
  align-self: center;
}

/* 桌面版：鼠标移开时稍淡一点，但仍可见 */
@media (hover: hover) {
  .video-card:not(:hover) .video-controls {
    opacity: 0.75;
  }
  .video-card:hover .video-controls {
    opacity: 1;
  }
}

.video-card.is-paused .video-controls {
  background: rgba(0, 0, 0, 0.65);
}

.vc-btn {
  background: transparent;
  border: none;
  color: #ffffff;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.vc-btn:hover {
  background: rgba(63, 242, 255, 0.2);
  color: #3ff2ff;
  transform: scale(1.08);
}

.vc-btn:active {
  transform: scale(0.95);
}

.vc-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.video-card.is-paused .vc-pause { display: none !important; }
.video-card.is-paused .vc-play { display: inline-block !important; }
.video-card:not(.is-paused) .vc-pause { display: inline-block !important; }
.video-card:not(.is-paused) .vc-play { display: none !important; }

.vc-divider {
  width: 1px;
  height: 14px;
  background: rgba(255, 255, 255, 0.25);
  margin: 0 2px;
}

.vc-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 4px;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.9);
}

.vc-status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3ff2ff;
  box-shadow: 0 0 8px #3ff2ff;
  flex-shrink: 0;
  animation: pulseDot 1.5s ease-in-out infinite;
}

.video-card.is-paused .vc-status::before {
  background: #f5d187;
  box-shadow: 0 0 8px #f5d187;
  animation: none;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.video-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px 14px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.18em;
}

.video-topbar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
}

.video-topbar span:first-child { background: #ff5f57; }
.video-topbar span:nth-child(2) { background: #febc2e; }
.video-topbar span:nth-child(3) { background: #28c840; }

.video-topbar em {
  margin-left: auto;
  font-style: normal;
  color: var(--cyan);
}

.video-glow {
  position: absolute;
  inset: auto 14% -28% 14%;
  height: 30%;
  background: var(--cyan);
  filter: blur(60px);
  opacity: 0.25;
  animation: videoGlow 3s ease-in-out infinite alternate;
}

@keyframes videoGlow {
  0% { opacity: 0.2; }
  100% { opacity: 0.35; }
}

/* 悬浮面板 */
.floating-panel {
  position: absolute;
  z-index: 4;
  min-width: 190px;
  padding: 18px 22px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 22px;
  background: rgba(5, 12, 26, 0.85);
  backdrop-filter: blur(24px);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.4),
    0 0 40px rgba(63, 242, 255, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  animation: floatPanel 4s ease-in-out infinite;
}

.floating-panel:hover {
  transform: translateY(-8px) scale(1.05);
  border-color: var(--cyan);
  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.5),
    0 0 60px rgba(63, 242, 255, 0.2);
}

.panel-left {
  left: -40px;
  bottom: 20%;
  animation-delay: 0s;
}

.panel-right {
  right: -36px;
  top: 16%;
  animation-delay: -2s;
}

@keyframes floatPanel {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.floating-panel span {
  display: block;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.floating-panel strong {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
}

/* ============================================
   通用卡片样式 - 玻璃拟态增强
   ============================================ */
.glass-card, .engine-card, .timeline-item, .platform-card,
.case-card, .price-card, .industry-card, .forecast-card, .contact-card {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow:
    var(--shadow),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.glass-card::before, .engine-card::before, .platform-card::before,
.case-card::before, .price-card::before, .industry-card::before, .forecast-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(63, 242, 255, 0.6), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.glass-card:hover::before, .engine-card:hover::before, .platform-card:hover::before,
.case-card:hover::before, .price-card:hover::before, .industry-card:hover::before, .forecast-card:hover::before {
  opacity: 1;
}

.glass-card::after, .engine-card::after, .platform-card::after,
.case-card::after, .price-card::after, .industry-card::after, .forecast-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(63, 242, 255, 0.06), transparent 40%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.glass-card:hover::after, .engine-card:hover::after, .platform-card:hover::after,
.case-card:hover::after, .price-card:hover::after, .industry-card:hover::after, .forecast-card:hover::after {
  opacity: 1;
}

.glass-card:hover, .engine-card:hover, .platform-card:hover,
.case-card:hover, .price-card:hover, .industry-card:hover {
  transform: translateY(-6px);
  border-color: rgba(63, 242, 255, 0.3);
  box-shadow:
    0 40px 120px rgba(0, 0, 0, 0.4),
    0 0 80px rgba(63, 242, 255, 0.1),
    0 0 0 1px rgba(63, 242, 255, 0.15) inset;
}

/* ============================================
   Section 标题
   ============================================ */
.section-heading {
  max-width: 800px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-heading.align-left {
  margin-left: 0;
  text-align: left;
}

.section-heading h2, .commerce-copy h2, .forecast-card h2 {
  margin: 20px 0 20px;
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 900;
  word-break: keep-all;
  overflow-wrap: break-word;
  line-break: loose;
  white-space: normal;
}

.section-heading p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 700px;
  margin: 0 auto;
}

.section-kicker {
  margin-bottom: 12px;
  position: relative;
}

.section-kicker::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 50%;
  width: 12px;
  height: 1px;
  background: var(--cyan);
}

.section-kicker::after {
  content: '';
  position: absolute;
  right: -20px;
  top: 50%;
  width: 12px;
  height: 1px;
  background: var(--cyan);
}

/* ============================================
   市场分析区块
   ============================================ */
.market-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.glass-card {
  padding: 32px;
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(63, 242, 255, 0.5), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.glass-card:hover::before {
  opacity: 1;
}

.glass-card strong {
  display: block;
  margin-bottom: 14px;
  font-size: 46px;
  font-weight: 900;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card span {
  color: #d4dfef;
  line-height: 1.7;
  font-size: 15px;
}

/* ============================================
   获客引擎区块
   ============================================ */
.engine-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.engine-card {
  position: relative;
  overflow: hidden;
  min-height: 500px;
  padding: 36px;
  border-radius: 34px;
}

.engine-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(63, 242, 255, 0.08), transparent 50%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.engine-card:hover::before {
  opacity: 1;
}

.engine-card::after {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  right: -70px;
  top: -70px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(63, 242, 255, 0.25), transparent 70%);
  transition: all 0.5s ease;
}

.engine-card:hover::after {
  width: 220px;
  height: 220px;
  right: -90px;
  top: -90px;
}

.engine-card.featured {
  transform: translateY(-20px);
  border-color: rgba(245, 209, 135, 0.4);
  background: linear-gradient(180deg, rgba(245, 209, 135, 0.14), rgba(63, 242, 255, 0.06));
}

.engine-card.featured::after {
  background: radial-gradient(circle, rgba(245, 209, 135, 0.3), transparent 70%);
}

.engine-index {
  color: var(--gold);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.22em;
  margin-bottom: 16px;
}

.engine-card h3, .timeline-item h3, .platform-card h3, .case-card h3, .price-card h3, .industry-card h3 {
  margin: 20px 0 16px;
  font-size: 26px;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.engine-card ul {
  margin-top: 32px;
  display: grid;
  gap: 16px;
  list-style: none;
  padding-left: 0;
}

.engine-card li {
  color: #d9e5f4;
  font-size: 14px;
  line-height: 1.6;
  position: relative;
}

.engine-card li::before {
  content: "✦";
  color: var(--cyan);
  margin-right: 12px;
  font-size: 10px;
  display: inline-block;
}

/* ============================================
   工作流程时间线
   ============================================ */
.workflow {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: start;
}

.timeline {
  position: relative;
  display: grid;
  gap: 20px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 32px;
  top: 44px;
  bottom: 44px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(63, 242, 255, 0.2), transparent);
}

.timeline-item {
  position: relative;
  padding: 30px 30px 30px 96px;
  border-radius: 30px;
  transition: all 0.4s ease;
}

.timeline-item:hover {
  background: linear-gradient(180deg, rgba(63, 242, 255, 0.08), rgba(63, 242, 255, 0.02));
}

.timeline-item span {
  position: absolute;
  left: 18px;
  top: 30px;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: #001018;
  font-size: 13px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  box-shadow: 0 0 30px rgba(63, 242, 255, 0.5);
}

.timeline-item h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.timeline-item p {
  font-size: 14px;
  line-height: 1.7;
}

/* ============================================
   商业区块
   ============================================ */
.commerce {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 70px;
  align-items: center;
}

.commerce-visual {
  position: relative;
  min-height: 560px;
  display: grid;
  place-items: center;
}

.commerce-visual::before {
  content: '';
  position: absolute;
  width: 85%;
  aspect-ratio: 1;
  border: 1px solid rgba(63, 242, 255, 0.2);
  border-radius: 50%;
  animation: spin 30s linear infinite;
}

.commerce-visual::after {
  content: '';
  position: absolute;
  width: 65%;
  aspect-ratio: 1;
  border: 1px dashed rgba(140, 108, 255, 0.15);
  border-radius: 50%;
  animation: spin 20s linear infinite reverse;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.commerce-visual img {
  position: relative;
  width: min(460px, 90%);
  border-radius: 36px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
  transform: rotate(-3deg);
  transition: all 0.5s ease;
}

.commerce-visual:hover img {
  transform: rotate(0deg) scale(1.02);
}

.orbital {
  position: absolute;
  padding: 14px 22px;
  border-radius: 999px;
  color: #001018;
  font-weight: 900;
  font-size: 14px;
  background: linear-gradient(135deg, var(--cyan), var(--gold));
  box-shadow:
    0 0 40px rgba(63, 242, 255, 0.4),
    0 0 80px rgba(245, 209, 135, 0.2);
  animation: orbitFloat 4s ease-in-out infinite;
  transition: all 0.3s ease;
}

.orbital:hover {
  transform: scale(1.1);
  box-shadow:
    0 0 60px rgba(63, 242, 255, 0.6),
    0 0 120px rgba(245, 209, 135, 0.3);
}

.orbital-a { top: 8%; left: 12%; animation-delay: 0s; }
.orbital-b { top: 22%; right: 4%; animation-delay: -1s; }
.orbital-c { bottom: 16%; left: 3%; animation-delay: -2s; }
.orbital-d { right: 16%; bottom: 5%; animation-delay: -3s; }

@keyframes orbitFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.commerce-copy .section-kicker {
  text-align: left;
}

.commerce-copy h2 {
  text-align: left;
}

.commerce-copy p {
  text-align: left;
  font-size: 17px;
  line-height: 1.8;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 36px;
}

.steps-grid > div {
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  transition: all 0.3s ease;
}

.steps-grid > div:hover {
  border-color: rgba(63, 242, 255, 0.3);
  transform: translateY(-4px);
  background: linear-gradient(180deg, rgba(63, 242, 255, 0.1), rgba(63, 242, 255, 0.03));
}

.steps-grid strong {
  display: block;
  color: var(--gold);
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 8px;
}

.steps-grid span {
  color: var(--muted);
  font-size: 14px;
}

/* ============================================
   平台卡片
   ============================================ */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.platform-card {
  padding: 28px;
  border-radius: 30px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.platform-card h3 {
  font-size: 18px;
  margin: 16px 0 12px;
  background: linear-gradient(135deg, var(--text), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.platform-card p {
  font-size: 14px;
  line-height: 1.7;
}

/* ============================================
   案例区块
   ============================================ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-card {
  padding: 36px;
  border-radius: 34px;
}

.case-card h3 {
  font-size: 22px;
  margin: 16px 0 14px;
}

.case-card p {
  font-size: 14px;
  line-height: 1.7;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 30px 0;
}

.case-metrics > div {
  padding: 20px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(63, 242, 255, 0.1), rgba(63, 242, 255, 0.03));
  border: 1px solid rgba(63, 242, 255, 0.15);
  text-align: center;
  transition: all 0.3s ease;
}

.case-metrics > div:hover {
  transform: translateY(-4px);
  border-color: rgba(63, 242, 255, 0.4);
  box-shadow: 0 15px 40px rgba(63, 242, 255, 0.15);
}

.case-metrics strong {
  display: block;
  font-size: 30px;
  font-weight: 900;
  color: var(--cyan);
  margin-bottom: 6px;
}

.case-metrics span {
  color: var(--muted);
  font-size: 12px;
}

blockquote {
  margin: 0;
  padding: 24px;
  border-left: 3px solid var(--gold);
  border-radius: 0 20px 20px 0;
  color: #e8f0fb;
  background: rgba(245, 209, 135, 0.06);
  line-height: 1.8;
  font-size: 14px;
  font-style: italic;
}

/* ============================================
   预测区块
   ============================================ */
.forecast-card {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  padding: 42px;
  border-radius: 38px;
}

.forecast-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.forecast-metrics > div {
  padding: 26px;
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(63, 242, 255, 0.12), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(63, 242, 255, 0.18);
  text-align: center;
  transition: all 0.3s ease;
}

.forecast-metrics > div:hover {
  transform: scale(1.05);
  border-color: rgba(63, 242, 255, 0.4);
}

.forecast-metrics strong {
  display: block;
  font-size: 32px;
  font-weight: 900;
  color: var(--green);
  margin-bottom: 6px;
}

.forecast-metrics span {
  color: var(--muted);
  font-size: 13px;
}

/* ============================================
   价格区块
   ============================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.price-card {
  padding: 36px;
  border-radius: 34px;
  display: flex;
  flex-direction: column;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.price-card:hover {
  transform: translateY(-8px);
}

.price-card.recommended {
  border-color: rgba(245, 209, 135, 0.5);
  transform: scale(1.04);
  background: linear-gradient(180deg, rgba(245, 209, 135, 0.14), rgba(255, 255, 255, 0.06));
  position: relative;
}

.price-card.recommended::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 34px;
  padding: 1px;
  background: linear-gradient(135deg, var(--gold), var(--cyan), var(--gold));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: borderRotate 3s linear infinite;
}

@keyframes borderRotate {
  to { filter: hue-rotate(360deg); }
}

.price-card.recommended:hover {
  transform: scale(1.06) translateY(-8px);
}

.tag {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--gold);
  background: rgba(245, 209, 135, 0.12);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.1em;
  width: fit-content;
}

.price-card h3 {
  margin: 20px 0 16px;
  font-size: 24px;
}

.price {
  margin: 0 0 28px;
  font-size: 46px;
  font-weight: 900;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price small {
  color: var(--muted);
  font-size: 16px;
  -webkit-text-fill-color: var(--muted);
}

.price-card ul {
  margin-top: auto;
  padding-top: 20px;
  list-style: none;
  padding-left: 0;
}

.price-card li {
  padding: 14px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #d9e5f4;
  font-size: 14px;
  display: flex;
  align-items: center;
}

.price-card li::before {
  content: "✓";
  color: var(--green);
  margin-right: 12px;
  font-weight: bold;
  flex-shrink: 0;
}

.pricing-note {
  margin-top: 28px;
  text-align: center;
  color: var(--gold);
  font-size: 14px;
}

/* ============================================
   行业区块
   ============================================ */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.industry-card {
  padding: 30px;
  border-radius: 30px;
  transition: all 0.4s ease;
}

.industry-card:hover {
  transform: translateY(-6px);
}

.industry-card h3 {
  margin: 16px 0 12px;
  font-size: 20px;
}

.industry-card p {
  font-size: 14px;
  line-height: 1.75;
}

/* ============================================
   联系区块
   ============================================ */
.contact-card {
  overflow: hidden;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 48px;
  padding: 32px;
  border-radius: 40px;
  align-items: center;
  position: relative;
  z-index: 2;
  background: linear-gradient(135deg, rgba(63, 242, 255, 0.12), rgba(140, 108, 255, 0.12), rgba(245, 209, 135, 0.08)) !important;
  border: 1px solid rgba(63, 242, 255, 0.25) !important;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1) !important;
}

.contact-card img {
  width: 100%;
  height: auto;
  min-height: 320px;
  object-fit: cover;
  border-radius: 30px;
  opacity: 0.9;
  transition: all 0.5s ease;
}

.contact-card img:hover {
  transform: scale(1.02);
  opacity: 1;
}

.contact-card > div {
  padding: 20px;
  background: rgba(10, 20, 40, 0.5);
  border-radius: 24px;
}

.contact-card .section-kicker {
  color: #3ff2ff !important;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.contact-card h2 {
  margin: 12px 0 20px;
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 900;
  word-break: keep-all;
  overflow-wrap: break-word;
  line-break: loose;
  white-space: normal;
  color: #ffffff !important;
  background: none;
  -webkit-text-fill-color: #ffffff;
}

.contact-card p {
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 12px;
  color: #c8d5e7 !important;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

.contact-actions .btn {
  min-height: 54px;
  padding: 0 28px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.contact-actions .btn.primary {
  color: #001119 !important;
  background: linear-gradient(135deg, #3ff2ff, #f5d187) !important;
  box-shadow: 0 20px 50px rgba(63, 242, 255, 0.35);
}

.contact-actions .btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 60px rgba(63, 242, 255, 0.5);
}

.contact-actions .btn.ghost {
  color: #ffffff !important;
  border: 1px solid rgba(63, 242, 255, 0.4) !important;
  background: rgba(63, 242, 255, 0.15) !important;
}

.contact-actions .btn.ghost:hover {
  border-color: #3ff2ff !important;
  background: rgba(63, 242, 255, 0.25) !important;
  transform: translateY(-3px);
  color: #3ff2ff !important;
}

/* ============================================
   页脚
   ============================================ */
.footer {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 44px 0 56px;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 14px;
  text-align: center;
}

.footer a {
  color: #9bb8e8;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* ============================================
   动画 - 滚动 reveal
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }
.delay-3 { transition-delay: 0.36s; }
.delay-4 { transition-delay: 0.48s; }

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1100px) {
  .hero { gap: 48px; }
  .engine-grid { grid-template-columns: 1fr; gap: 20px; }
  .engine-card.featured { transform: none; }
  .price-card.recommended { transform: none; }
}

@media (max-width: 980px) {
  .nav { display: none; }
  .menu-toggle { display: flex; }
  .header-cta { display: none; }
  .hero, .workflow, .commerce, .forecast-card, .contact-card { grid-template-columns: 1fr; }
  .hero { gap: 48px; min-height: auto; padding-top: 120px; }
  .market-grid, .pricing-grid, .industry-grid { grid-template-columns: 1fr; }
  .platform-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-metrics { grid-template-columns: 1fr; gap: 12px; }
  .contact-card > div { padding: 10px; }
}

@media (max-width: 768px) {
  .section-pad { width: calc(100% - 32px); padding: 80px 0; }
  .section-pad.compact { padding: 60px 0; }
  .hero h1 { font-size: 2.8rem; }
  .section-heading h2 { font-size: 2.2rem; }
  .platform-grid, .case-grid, .forecast-metrics, .steps-grid { grid-template-columns: 1fr; }
  .footer { flex-direction: column; width: calc(100% - 32px); text-align: center; }
  .floating-panel { display: none; }
  .commerce-visual { min-height: 420px; }
  .orbital { font-size: 12px; padding: 10px 16px; }
  .site-header { width: calc(100% - 24px); margin-top: 12px; }
}

@media (max-width: 640px) {
  .section-heading h2, .commerce-copy h2 { font-size: 1.9rem; }
  .hero h1 { font-size: 2.4rem; }
  .price { font-size: 36px; }
  .case-metrics { grid-template-columns: 1fr; }

  /* 手机版视频控件：更大一点，但仍然在右下角不挡内容 */
  .video-controls {
    padding: 8px 10px 8px 12px;
    font-size: 13px;
  }

  .vc-btn {
    width: 32px;
    height: 32px;
  }

  .vc-btn svg {
    width: 18px;
    height: 18px;
  }
}

/* 触摸设备（如手机）：控件始终可见 */
@media (hover: none) and (pointer: coarse) {
  .video-controls {
    opacity: 1;
  }
}

/* ============================================
   加载动画
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-header {
  animation: fadeInUp 0.8s ease forwards;
}

.hero-copy {
  animation: fadeInUp 0.8s ease 0.2s forwards;
  opacity: 0;
}

.hero-visual {
  animation: fadeInUp 0.8s ease 0.4s forwards;
  opacity: 0;
}