/* 基础设置 */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #0b0b0f;
  background: radial-gradient(circle at top, #f7f8ff 0, #f5f5f7 40%, #f2f2f4 100%);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  /* 优化文本渲染 */
  text-rendering: optimizeSpeed;
}

/* GPU 加速优化 - 为动画元素启用硬件加速 */
.hero-device-frame,
.hero-gradient,
.feature-card,
.screen-mockup,
.node-card,
.orbit-item,
.app-orbit-wrapper,
.connection-center-block::before {
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* 动画关键帧 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes rotateGradient {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

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

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* 滚动动画类 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-delay-1 {
  transition-delay: 0.1s;
}

.animate-delay-2 {
  transition-delay: 0.2s;
}

.animate-delay-3 {
  transition-delay: 0.3s;
}

.animate-delay-4 {
  transition-delay: 0.4s;
}

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

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

button {
  font-family: inherit;
}

/* 布局工具 */
.section {
  padding: 96px 24px;
}

.section-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  font-size: 32px;
  line-height: 1.1;
  letter-spacing: 0.02em;
  margin: 0 0 16px;
}

.section-subtitle {
  margin: 0;
  font-size: 16px;
  color: #5f6065;
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background-color: rgba(245, 245, 247, 0.8);
  border-bottom: 1px solid rgba(210, 210, 215, 0.7);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
  background-color: rgba(245, 245, 247, 0.95);
  border-bottom-color: rgba(210, 210, 215, 0.9);
}

.nav-bar {
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 8px;
  background: conic-gradient(from 210deg, #ff9f0a, #ff375f, #0a84ff, #30d158, #ff9f0a);
  position: relative;
  animation: rotateGradient 8s linear infinite;
  transition: transform 0.3s ease;
}

.brand:hover .brand-mark {
  transform: scale(1.1) rotate(180deg);
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 6px;
  background: radial-gradient(circle at top, #ffffff 0, #f5f5f7 45%, #ebebf0 100%);
}

.brand-name {
  font-size: 15px;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  color: #1d1d1f;
}

.nav-link {
  position: relative;
  padding-bottom: 2px;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background-color: #1d1d1f;
  transition: width 0.2s ease;
}

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

.nav-right .nav-cta {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 13px;
  background: linear-gradient(180deg, #ffffff, #f5f5f7);
  box-shadow: 0 0 0 0.5px rgba(0, 0, 0, 0.05);
}

.nav-right .nav-cta:hover {
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.15), 0 8px 24px rgba(0, 0, 0, 0.08);
}

/* Hero */
.hero {
  padding: 64px 24px 72px;
  position: relative;
  overflow: hidden;
}

.hero-copy {
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-kicker {
  animation: fadeIn 0.8s ease-out 0.2s both;
}

.hero-title {
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
}

.hero-subtitle {
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.5s both;
}

.hero-actions {
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.7s both;
}

.hero-badges {
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.9s both;
}

.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.hero-kicker {
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #6e6e73;
  margin: 0 0 10px;
}

.hero-title {
  font-size: clamp(40px, 4vw, 52px);
  line-height: 1.05;
  letter-spacing: 0.02em;
  margin: 0 0 18px;
}

.hero-subtitle {
  font-size: 16px;
  color: #515156;
  margin: 0 0 28px;
  max-width: 430px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.btn {
  border-radius: 999px;
  border: none;
  padding: 11px 22px;
  font-size: 15px;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #0071e3, #0a84ff);
  color: #ffffff;
  box-shadow: 0 14px 30px rgba(10, 132, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(10, 132, 255, 0.45);
}

.btn-ghost {
  background: transparent;
  color: #1d1d1f;
  border: 1px solid rgba(0, 0, 0, 0.16);
}

.btn-ghost:hover {
  background-color: rgba(0, 0, 0, 0.03);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: #666671;
}

.badge {
  padding: 4px 10px;
  border-radius: 999px;
  background-color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(210, 210, 215, 0.8);
}

.hero-visual {
  position: relative;
  animation: slideInRight 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}

.hero-device-frame {
  max-width: 340px;
  margin-left: auto;
  background: linear-gradient(135deg, #d4d4dd, #fafafa);
  padding: 10px;
  border-radius: 40px;
  box-shadow: 0 32px 60px rgba(0, 0, 0, 0.18);
  animation: float 6s ease-in-out infinite;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-device-frame:hover {
  transform: translateY(-5px);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.25);
}

.hero-device-screen {
  border-radius: 32px;
  background: linear-gradient(135deg, #1a1a2e 0%, #0f0f1e 50%, #16213e 100%);
  padding: 20px 18px;
  position: relative;
  overflow: hidden;
  color: #ffffff;
  min-height: 360px;
}

/* 轻量化渐变背景 - 保留原多彩光斑效果 */
.hero-gradient {
  position: absolute;
  inset: -30%;
  background: 
    radial-gradient(circle at 15% 25%, rgba(255, 87, 34, 0.9), transparent 50%),
    radial-gradient(circle at 85% 20%, rgba(156, 39, 176, 0.9), transparent 50%),
    radial-gradient(circle at 50% 60%, rgba(0, 188, 212, 0.9), transparent 50%),
    radial-gradient(circle at 10% 75%, rgba(255, 193, 7, 0.85), transparent 50%),
    radial-gradient(circle at 90% 75%, rgba(76, 175, 80, 0.85), transparent 50%),
    radial-gradient(circle at 50% 15%, rgba(233, 30, 99, 0.85), transparent 50%),
    radial-gradient(circle at 30% 85%, rgba(63, 81, 181, 0.8), transparent 50%),
    radial-gradient(circle at 70% 40%, rgba(255, 152, 0, 0.9), transparent 50%),
    radial-gradient(circle at 25% 50%, rgba(0, 150, 136, 0.8), transparent 50%),
    radial-gradient(circle at 65% 10%, rgba(244, 67, 54, 0.8), transparent 50%),
    radial-gradient(circle at 35% 30%, rgba(103, 58, 183, 0.8), transparent 50%),
    radial-gradient(circle at 80% 60%, rgba(3, 169, 244, 0.8), transparent 50%);
  background-size: 200% 200%;
  filter: blur(25px);
  mix-blend-mode: screen;
  opacity: 1;
  animation: colorFlowLight 20s ease-in-out infinite;
  will-change: background-position;
}

/* 静态旋转光晕层 */
.hero-gradient::before {
  content: "";
  position: absolute;
  inset: -50%;
  background: conic-gradient(
    from 0deg at 50% 50%,
    rgba(255, 87, 34, 0.5) 0deg,
    rgba(156, 39, 176, 0.5) 60deg,
    rgba(0, 188, 212, 0.5) 120deg,
    rgba(255, 193, 7, 0.5) 180deg,
    rgba(76, 175, 80, 0.5) 240deg,
    rgba(233, 30, 99, 0.5) 300deg,
    rgba(255, 87, 34, 0.5) 360deg
  );
  filter: blur(40px);
  opacity: 0.6;
  mix-blend-mode: screen;
  animation: rotateGradient 25s linear infinite;
}

.hero-gradient::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at 50% 50%,
    transparent 40%,
    rgba(0, 0, 0, 0.1) 100%
  );
}

/* 轻量动画 - 仅移动 background-position，不改变 filter */
@keyframes colorFlowLight {
  0%, 100% {
    background-position: 0% 0%;
    transform: scale(1) translateZ(0);
  }
  25% {
    background-position: 100% 0%;
    transform: scale(1.02) translateZ(0);
  }
  50% {
    background-position: 100% 100%;
    transform: scale(1) translateZ(0);
  }
  75% {
    background-position: 0% 100%;
    transform: scale(1.02) translateZ(0);
  }
}

.hero-logo {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 36px;
}

.hero-logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: conic-gradient(from 210deg, #ff9f0a, #ff375f, #0a84ff, #30d158, #ff9f0a);
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.6);
  animation: rotateGradient 6s linear infinite, float 4s ease-in-out infinite;
}

.hero-logo-text {
  font-size: 16px;
}

.hero-screen-content {
  position: relative;
  padding: 12px 0;
}

.hero-screen-content p:first-child {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 4px;
  opacity: 0.86;
}

.hero-screen-content h2 {
  margin: 0 0 6px;
  font-size: 22px;
}

.hero-screen-content p:last-child {
  margin: 0;
  font-size: 14px;
  opacity: 0.9;
}

.hero-note {
  margin-top: 12px;
  font-size: 12px;
  color: #8f8f95;
}

/* 功能区 */
.features {
  background: #f5f5f7;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 20px 18px;
  border-radius: 20px;
  background: radial-gradient(circle at top left, #ffffff, #f5f5f7);
  border: 1px solid rgba(210, 210, 215, 0.8);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
  font-size: 14px;
  color: #44444a;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    border-color 0.3s ease;
  cursor: pointer;
}

.feature-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
  border-color: rgba(10, 132, 255, 0.3);
}

.feature-card h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 17px;
  color: #1d1d1f;
}

/* 使用体验 */
.experience-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 40px;
  align-items: center;
}

.experience-list {
  padding-left: 18px;
  color: #4a4a51;
  font-size: 14px;
}

.experience-list li {
  margin-bottom: 6px;
}

.glass-card {
  padding: 26px 24px;
  border-radius: 24px;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.73),
    rgba(245, 246, 255, 0.95)
  );
  border: 1px solid rgba(210, 210, 230, 0.9);
  box-shadow: 0 26px 50px rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(18px);
  font-size: 14px;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 32px 60px rgba(15, 23, 42, 0.25);
}

.glass-card h3 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 18px;
}

.glass-caption {
  margin: 14px 0 0;
  font-size: 12px;
  color: #6e6e73;
}

/* 连接流程动画 */
.connection-flow {
  background: #f9fafb;
  padding: 96px 24px;
  position: relative;
}

.connection-flow-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.connection-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 64px;
}

.connection-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 12px;
  text-align: center;
  white-space: pre-wrap;
}

.connection-subtitle {
  font-size: 14px;
  text-align: center;
  color: #6b7280;
  opacity: 0.6;
  margin: 0;
}

.connection-container {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.connection-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  z-index: 2;
}

.connection-icon {
  font-size: 48px;
  color: #4b5563;
}

.connection-label {
  font-size: 14px;
  color: #1f2937;
  margin: 0;
  text-align: center;
}

.connection-arrow {
  flex: 1 1 auto;
  position: relative;
  min-width: 80px;
  height: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1;
}

.connection-lightning {
  font-size: 28px;
  color: #14b8a6;
  z-index: 1;
  position: relative;
}

.connection-line {
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #23b79c, transparent);
  transform: translateY(-50%);
}

.connection-center-block {
  position: relative;
  overflow: hidden;
  z-index: 3;
  border-radius: 16px;
  padding: 2px;
  flex: 1 1 auto;
  border: 1px solid rgba(217, 217, 217, 0.3);
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.2),
    rgba(255, 255, 255, 0.4)
  );
  box-shadow: 0 0 20px rgba(35, 183, 156, 0.1);
}

.connection-center-inner {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  border-radius: 14px;
  padding: 24px;
  z-index: 3;
}

.connection-center-content {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.connection-service-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.connection-service-icon {
  font-size: 48px;
  color: #0d9488;
}

.connection-service-text {
  font-size: 12px;
  color: #1f2937;
  margin: 0;
  text-align: center;
}

.connection-divider {
  width: 48px;
  height: 1px;
  background: #d1d5db;
}

.connection-service-logos {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  justify-content: center;
}

.connection-logo {
  font-size: 20px;
}

/* 光效动画 */
.connection-center-block::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(35, 183, 156, 0.3),
    transparent
  );
  animation: shimmer 3s ease-in-out infinite;
  z-index: 1;
}

@keyframes shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* 界面预览 */
.screens {
  background: #f5f5f7;
}

.screens-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: center;
}

.screen-mockup {
  flex: 1 1 220px;
  max-width: 280px;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.screen-mockup:hover {
  transform: translateY(-10px) scale(1.05);
}

.screen-placeholder {
  height: 220px;
  border-radius: 26px;
  border: 1px dashed rgba(160, 160, 170, 0.9);
  background: repeating-linear-gradient(
      -45deg,
      rgba(250, 250, 255, 0.86),
      rgba(250, 250, 255, 0.86) 6px,
      rgba(238, 238, 245, 0.9) 6px,
      rgba(238, 238, 245, 0.9) 12px
    );
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #7a7a82;
}

/* ============================================================
   全球节点区域 - 完整优化版
   ============================================================ */

.global-nodes {
  background: #f9fafb;
  padding: 80px 0; /* 增加上下间距，更显高级 */
}

.nodes-grid {
  display: grid;
  /* 默认 PC 端 6 列 */
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.node-card {
  background: #ffffff;
  border: 1px solid #efefef;
  border-radius: 12px; /* 稍微圆润一点点 */
  padding: 8px 12px;   /* 缩小内边距，让卡片更紧凑 */
  display: flex;
  align-items: center;
  gap: 10px;           /* 国旗和文字的间距 */
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  position: relative;
  overflow: hidden;
}

.node-card:hover {
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
  transform: translateY(-3px);
  border-color: #007aff; /* 悬浮时变蓝色边框，更有科技感 */
}

/* 国旗样式 - 修改重点 */
.node-flag {
  width: 40px;               /* 国旗宽度 */
  height: auto;              /* 高度自适应，保持原始比例 */
  flex-shrink: 0;            /* 防止被文字挤压变形 */
  border-radius: 4px;        /* 轻微圆角 */
  border: 1px solid rgba(0,0,0,0.05); /* 淡淡的边框防止白色国旗隐身 */
  object-fit: contain;       /* 保持图片原始比例 */
}

/* 如果你使用的是 flag-icons (span 标签) */
.node-flag.fi {
  width: 32px !important;    /* 强制覆盖库默认的 4:3 比例 */
  height: 32px !important;
  background-size: cover;    
  margin: 0;
}

.node-name {
  font-size: 14px;
  font-weight: 600;          /* 稍微加粗一点点 */
  color: #1d1d1f;            /* 使用更深的 Apple 风格文字颜色 */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;   /* 文字过长显示省略号 */
  margin: 0;
}

/* ============================================================
   响应式适配：手机端自动改为 2 列或 3 列
   ============================================================ */
@media (max-width: 1024px) {
  .nodes-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .nodes-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }
  .node-card {
    padding: 6px 10px;
  }
}

@media (max-width: 480px) {
  .nodes-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)); /* 手机端 2 列最好看 */
  }
}
/* 下载区 */
.download {
  padding-bottom: 80px;
}

.download-inner {
  display: grid;
  /* 将原来的 1.2fr 改为 1.7fr，缩小右侧二维码占比 */
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 0.3fr); 
  gap: 40px;
  align-items: center;
}

.download-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 24px 0 14px;
}

.store-btn {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 16px;
  min-width: 180px;
  background: #0b0b0f;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  font-size: 12px;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.store-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

.store-btn:active {
  transform: translateY(-1px) scale(1);
}

.store-btn.android {
  background: linear-gradient(135deg, #529a09, #529a09);
}
.store-btn.windows {
  background: linear-gradient(135deg, #095e9a, #095e9a);
}
.store-btn.macos {
  background: linear-gradient(135deg, #6e6f6e, #6e6f6e);
}

.store-badge-title {
  font-size: 13px;
  margin-bottom: 2px;
}

.store-badge-subtitle {
  opacity: 0.75;
}

.download-note {
  font-size: 12px;
  color: #777780;
}

.download-qr {
  display: flex;
  justify-content: flex-end;
}

.qr-card {
  padding: 18px 18px 16px;
  border-radius: 20px;
  background: linear-gradient(135deg, #ffffff, #f0f0ff);
  border: 1px solid rgba(210, 210, 230, 0.9);
  text-align: center;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.qr-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.qr-placeholder {
  width: 120px;
  height: 120px;
  border-radius: 16px;
  border: 1px dashed rgba(100, 100, 120, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 8px;
  font-size: 13px;
  color: #6e6e73;
}

.qr-caption {
  margin: 0;
  font-size: 12px;
  color: #4b4b52;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(210, 210, 215, 0.9);
  padding: 18px 24px 24px;
  background: #f5f5f7;
  font-size: 12px;
  color: #6e6e73;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-brand {
  margin: 0 0 2px;
  font-weight: 500;
}

.footer-text {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-link {
  position: relative;
}

.footer-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background-color: #6e6e73;
  transition: width 0.16s ease;
}

.footer-link:hover::after {
  width: 100%;
}

/* 响应式 */
@media (max-width: 960px) {
  .nav-center {
    display: none;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-device-frame {
    margin: 12px auto 0;
  }

  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .experience-inner,
  .download-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .download-qr {
    justify-content: flex-start;
  }

  .connection-container {
    flex-direction: column;
    gap: 32px;
  }

  .connection-arrow {
    width: 4px;
    height: 60px;
    min-width: 4px;
  }

  .connection-line {
    width: 4px;
    height: 100%;
    left: 50%;
    top: 0;
    background: linear-gradient(180deg, transparent, #23b79c, transparent);
    transform: translateX(-50%);
  }

  .connection-center-content {
    flex-direction: column;
    gap: 16px;
  }

  .connection-divider {
    width: 1px;
    height: 48px;
  }

  .connection-title {
    font-size: 24px;
  }

  .nodes-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .section {
    padding: 72px 20px;
  }

  .hero {
    padding: 52px 20px 60px;
  }

  .features-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .screen-placeholder {
    height: 190px;
  }

  .connection-flow {
    padding: 72px 16px;
  }

  .connection-title {
    font-size: 22px;
  }

  .connection-subtitle {
    font-size: 13px;
  }

  .connection-icon {
    font-size: 40px;
  }

  .connection-service-icon {
    font-size: 40px;
  }

  .connection-service-text {
    font-size: 11px;
  }

  .connection-center-content {
    flex-wrap: wrap;
    gap: 12px;
  }

  .connection-center-inner {
    padding: 20px 16px;
  }
}
/* --- 动态 App 背景板块样式 --- */
.app-marquee-section {
    position: relative;
    width: 100%;
    height: 480px; /* 板块高度 */
    overflow: hidden;
    background-color: #0c0c0c;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 40px; /* 与上方 Windows 区域的间距 */
}

.marquee-bg-layer {
    position: absolute;
    width: 250%; /* 足够大以覆盖旋转后的边缘 */
    height: 250%;
    /* ！！请将此处替换为您文件夹中的背景图路径，例如 images/bg-apps.jpg ！！ */
    background-image: url('https://tencentcdna.production.link3.cc/user_create_images/link3_1742225483539/multiple_images/1766204875935'); 
    background-repeat: repeat;
    background-size: 2500px auto; 
    transform: rotate(-7deg); /* 倾斜 */
    animation: appMoveBg 15s linear infinite;
    will-change: background-position;
}

.marquee-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.7) 100%);
    z-index: 1;
}

.marquee-content-box {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #ffffff;
    padding: 0 20px;
    max-width: 900px;
}

.marquee-title {
    font-size: 46px;
    font-weight: 800;
    margin: 0 0 5px 0;
    color: #fff;
    text-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

.marquee-subtitle {
    font-size: 28px;
    font-weight: 600;
    margin: 0 0 20px 0;
    color: #fff;
}

.marquee-desc {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255,255,255,0.85);
    margin: 0;
}

/* 动画：斜向移动 */
@keyframes appMoveBg {
    from { background-position: 0 0; }
    to { background-position: 1000px 500px; }
}

/* 移动端适配 */
/* --- 手机端：仅让中间卡片内部元素横向排列 --- */
@media (max-width: 768px) {
  /* 1. 中间卡片主容器：保持上下垂直间距，但内部准备横向 */
  .connection-center-block {
    width: 100% !important;
    max-width: 360px; /* 限制最大宽度，防止在宽屏手机上拉得太长 */
    margin: 8px auto; /* 保持上下间距，居中 */
  }

  /* 2. 内部白底容器：强制横向排列 */
  .connection-center-content {
    flex-direction: row !important; /* 核心：强制横向 */
    justify-content: space-around;   /* 三个项等距分布 */
    align-items: center;
    padding: 12px 6px !important;
    gap: 0; /* 间距由 space-around 控制 */
  }

  /* 3. 每一个服务项（图标+文字） */
  .connection-service-item {
    flex: 1;
    display: flex;
    flex-direction: column; /* 图标在上文字在下 */
    align-items: center;
    justify-content: center;
    min-width: 0; /* 允许收缩 */
  }

  /* 4. 缩小图标尺寸，适应横向排布 */
  .connection-service-icon {
    font-size: 24px !important; /* 缩小图标，防止手机屏溢出 */
    margin-bottom: 6px;
  }

  /* 5. 缩小文字，防止长词折行 */
  .connection-service-text {
    font-size: 9px !important; /* 较小的字体以容纳“全球高防节点” */
    white-space: nowrap;      /* 禁止文字折行 */
    letter-spacing: -0.5px;   /* 字间距稍微收紧 */
    color: #374151;
    transform: scale(0.95);    /* 微调缩放 */
  }

  /* 6. 中间的分隔线：由竖向改为横向小点或短线 */
  .connection-divider {
    width: 1px !important;   /* 变成一根细垂直线 */
    height: 20px !important;
    background: #e5e7eb;
    margin: 0 4px;
    flex-shrink: 0;
  }
}
/* 1. 轨道外层：定位在“海外服务”图标的正中心 */
.app-orbit-wrapper {
    position: absolute;
    top: 35px; /* 调整这个值，使其对准中心图标的几何中心 */
    left: 50%;
    width: 0;
    height: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    animation: orbitMainRotate 15s linear infinite;
}
/* 2. 单个图标项：通过 translate 撑开旋转半径 */
.orbit-item {
    position: absolute;
    width: 30px;
    height: 30px;
    background: white;
    border-radius: 50%;
    padding: 4px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    /* 保持图标永远头朝上 */
    animation: orbitCounterRotate 15s linear infinite;
}

/* 3. 使用数学角度精确排布（重点：修改这里的 70px 可以改变旋转半径） */
.orbit-item:nth-child(1) { transform: rotate(0deg)   translateY(-70px); }
.orbit-item:nth-child(2) { transform: rotate(60deg)  translateY(-70px); }
.orbit-item:nth-child(3) { transform: rotate(120deg) translateY(-70px); }
.orbit-item:nth-child(4) { transform: rotate(180deg) translateY(-70px); }
.orbit-item:nth-child(5) { transform: rotate(240deg) translateY(-70px); }
.orbit-item:nth-child(6) { transform: rotate(300deg) translateY(-70px); }

/* 4. 动画定义 */
@keyframes orbitMainRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes orbitCounterRotate {
    /* 这里的 rotate 必须和 orbit-item 里的初始角度抵消，但为了简单，
       我们直接让内容物（图标本身）反向旋转即可 */
}


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

/* 隐藏原有的静态图标列 */
.connection-service-logos {
    display: none !important;
}