/* =====================================================================
   Visual Components 中国区 — 首页高端版（追加）
   ---------------------------------------------------------------------
   追加到 styles.css 末尾，不修改原有 token。
   设计目标：暗色 hero + 粒子 + 玻璃拟态 + 磁吸 + 数字滚动 + 滚动揭示
   ===================================================================== */

/* =====================================================================
   1. 全局暗色主题变量（hero / 数字条用）
   ===================================================================== */
:root {
  --vc-dark-bg:      #030712;
  --vc-dark-bg-2:    #0f172a;
  --vc-dark-card:    rgba(17, 24, 39, 0.7);
  --vc-dark-border:  rgba(148, 163, 184, 0.15);
  --vc-neon-cyan:    #06b6d4;
  --vc-neon-blue:    #3b82f6;
  --vc-neon-purple:  #8b5cf6;
  --vc-neon-pink:    #ec4899;
  --vc-gradient-1:   linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
  --vc-gradient-2:   linear-gradient(135deg, #f97316 0%, #ec4899 100%);
  --vc-gradient-3:   linear-gradient(90deg, #06b6d4 0%, #3b82f6 40%, #8b5cf6 100%);
}

/* =====================================================================
   1.5 顶部联系方式栏
   ===================================================================== */
.top-contact-bar {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
  padding: 6px 0;
  position: relative;
  z-index: 1031;
}

.top-contact-bar + .navbar-vc {
  top: 36px;
}

.top-contact-content {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

.top-contact-name {
  display: flex;
  align-items: center;
  gap: 6px;
}

.top-contact-name svg {
  color: var(--vc-neon-cyan);
}

.top-contact-divider {
  color: rgba(148, 163, 184, 0.3);
}

.top-contact-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--vc-neon-cyan);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
}

.top-contact-phone:hover {
  color: #ffffff;
  text-shadow: 0 0 10px var(--vc-neon-cyan);
}

.top-contact-phone svg {
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.8; }
  50% { opacity: 1; filter: drop-shadow(0 0 4px var(--vc-neon-cyan)); }
}

/* 手机端适配 */
@media (max-width: 576px) {
  .top-contact-content {
    justify-content: center;
    font-size: 12px;
  }

  .top-contact-bar + .navbar-vc {
    top: 32px;
  }
}

/* =====================================================================
   2. 导航栏升级 — 深色玻璃拟态 + 顶部渐变彩条
   ===================================================================== */
.navbar-vc {
  background: rgba(3, 7, 18, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: none;
  box-shadow: 0 1px 0 rgba(148, 163, 184, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
}

/* 顶部渐变彩条 */
.navbar-vc::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #06b6d4 0%, #3b82f6 40%, #8b5cf6 70%, #ec4899 100%);
  z-index: 1;
}

.navbar-vc .navbar-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: #ffffff;
  letter-spacing: 0.03em;
  text-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
}

.navbar-vc .nav-link {
  color: rgba(255, 255, 255, 0.75);
  font-weight: 500;
  padding: 0.625rem 1rem;
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.25s ease;
  position: relative;
}

.navbar-vc .nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #06b6d4, #3b82f6);
  transform: translateX(-50%);
  transition: width 0.3s ease;
  border-radius: 1px;
}

.navbar-vc .nav-link:hover {
  color: #ffffff;
  background: rgba(59, 130, 246, 0.15);
}

.navbar-vc .nav-link:hover::after {
  width: 60%;
}

.navbar-vc .nav-link.active,
.navbar-vc .nav-link[aria-current="page"] {
  color: #06b6d4;
  background: rgba(6, 182, 212, 0.1);
  font-weight: 600;
}

.navbar-vc .nav-link.active::after,
.navbar-vc .nav-link[aria-current="page"]::after {
  width: 80%;
  background: linear-gradient(90deg, #06b6d4, #3b82f6);
}

.navbar-vc .navbar-toggler {
  border-color: rgba(148, 163, 184, 0.3);
  padding: 0.5rem 0.75rem;
}

.navbar-vc .navbar-toggler-icon {
  filter: invert(1) brightness(0.8);
}

/* 移动端导航 */
@media (max-width: 991px) {
  .navbar-vc .collapse {
    background: rgba(3, 7, 18, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 0 0 12px 12px;
    margin-top: 0.5rem;
    padding: 1rem;
  }
  .navbar-vc .nav-link::after { display: none; }
  .navbar-vc .nav-link.active,
  .navbar-vc .nav-link[aria-current="page"] {
    background: rgba(6, 182, 212, 0.15);
  }
}

/* =====================================================================
   3. Hero 暗色全屏 — 增强光效层次
   ===================================================================== */
body { padding-top: 96px; }

.hero-vc-dark {
  position: relative;
  min-height: 100vh;
  background: var(--vc-dark-bg);
  color: #ffffff;
  overflow: hidden;
  isolation: isolate;
  padding-top: 70px;
}

/* 背景光效层 */
.hero-vc-dark::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(6, 182, 212, 0.35) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 30%, rgba(59, 130, 246, 0.30) 0%, transparent 50%),
    radial-gradient(ellipse 70% 60% at 50% 80%, rgba(139, 92, 246, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 90% 90%, rgba(236, 72, 153, 0.15) 0%, transparent 50%);
  z-index: -2;
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0%   { opacity: 0.8; }
  100% { opacity: 1; }
}

/* 网格装饰线 */
.hero-vc-dark::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(6, 182, 212, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 182, 212, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: -1;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 20%, transparent 70%);
}

/* 粒子网格 canvas — 增强发光效果 */
#hero-particles {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  opacity: 0.8;
}

.hero-vc-dark h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.05;
  font-weight: 800;
  margin-bottom: var(--vc-space-5);
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 50%, #06b6d4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 60px rgba(6, 182, 212, 0.3);
  letter-spacing: -0.02em;
}

.hero-vc-dark .hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--vc-space-2);
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(59, 130, 246, 0.15));
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 999px;
  font-size: var(--vc-fs-sm);
  color: #06b6d4;
  margin-bottom: var(--vc-space-5);
  backdrop-filter: blur(10px);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.2), inset 0 1px 0 rgba(255,255,255,0.1);
}

.hero-vc-dark .hero-eyebrow .dot {
  width: 8px; height: 8px;
  background: #06b6d4;
  border-radius: 50%;
  box-shadow: 0 0 12px #06b6d4, 0 0 24px rgba(6, 182, 212, 0.5);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(1.4); }
}

.hero-vc-dark .lead {
  font-size: var(--vc-fs-md);
  color: rgba(255, 255, 255, 0.75);
  max-width: 580px;
  margin-bottom: var(--vc-space-6);
}

/* 磁吸按钮 */
.btn-vc-magnetic {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--vc-space-2);
  padding: var(--vc-space-4) var(--vc-space-6);
  background: var(--vc-gradient-1);
  color: #ffffff;
  font-weight: var(--vc-fw-bold);
  border-radius: 999px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--vc-ease), box-shadow 0.2s var(--vc-ease);
  box-shadow: 0 8px 24px rgba(91, 141, 239, 0.35);
  will-change: transform;
}
.btn-vc-magnetic:hover {
  box-shadow: 0 12px 32px rgba(91, 141, 239, 0.5);
  color: #ffffff;
}
.btn-vc-magnetic .arrow {
  transition: transform 0.2s var(--vc-ease);
}
.btn-vc-magnetic:hover .arrow {
  transform: translateX(4px);
}

/* 暗色场景里的 ghost 按钮 */
.btn-vc-glass {
  display: inline-flex;
  align-items: center;
  gap: var(--vc-space-2);
  padding: var(--vc-space-4) var(--vc-space-6);
  background: var(--vc-dark-card);
  color: #ffffff;
  border: 1px solid var(--vc-dark-border);
  border-radius: 999px;
  text-decoration: none;
  backdrop-filter: blur(10px);
  transition: background 0.2s var(--vc-ease), border-color 0.2s var(--vc-ease);
}
.btn-vc-glass:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

/* Hero 右侧视频卡片 */
.hero-video-card {
  position: relative;
  border-radius: var(--vc-radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5),
              0 0 0 1px rgba(255, 255, 255, 0.08);
  background: var(--vc-dark-bg-2);
  aspect-ratio: 16 / 10;
}
.hero-video-card video {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.hero-video-card .play-badge {
  position: absolute;
  top: var(--vc-space-4); left: var(--vc-space-4);
  padding: var(--vc-space-2) var(--vc-space-3);
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  color: #ffffff;
  border-radius: 999px;
  font-size: var(--vc-fs-xs);
  display: inline-flex;
  align-items: center;
  gap: var(--vc-space-2);
}
.hero-video-card .play-badge .live-dot {
  width: 6px; height: 6px;
  background: var(--vc-color-danger-500);
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}

/* 浮动 3D 统计小卡（hero 内悬浮） */
.hero-float-card {
  position: absolute;
  background: rgba(10, 21, 48, 0.85);
  backdrop-filter: blur(20px);
  border: 1px solid var(--vc-dark-border);
  border-radius: var(--vc-radius-md);
  padding: var(--vc-space-3) var(--vc-space-4);
  color: #ffffff;
  font-size: var(--vc-fs-sm);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  animation: float 6s ease-in-out infinite;
}
.hero-float-card.top-r  { top: -20px; right: -20px; }
.hero-float-card.bot-l  { bottom: -20px; left: -20px; animation-delay: -3s; }

.hero-float-card .num {
  font-size: var(--vc-fs-xl);
  font-weight: var(--vc-fw-bold);
  background: var(--vc-gradient-1);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}
.hero-float-card .lbl {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--vc-fs-xs);
  margin-top: 4px;
}

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

/* =====================================================================
   3. 客户 logo 信任栏（暗色）
   ===================================================================== */
.trust-bar-dark {
  background: var(--vc-dark-bg-2);
  border-top: 1px solid var(--vc-dark-border);
  border-bottom: 1px solid var(--vc-dark-border);
  padding: var(--vc-space-7) 0;
  position: relative;
  overflow: hidden;
}
.trust-bar-dark::before,
.trust-bar-dark::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}
.trust-bar-dark::before { left: 0;  background: linear-gradient(90deg, var(--vc-dark-bg-2), transparent); }
.trust-bar-dark::after  { right: 0; background: linear-gradient(-90deg, var(--vc-dark-bg-2), transparent); }

.trust-bar-dark .trust-title {
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--vc-fs-sm);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--vc-space-5);
}

.trust-marquee {
  display: flex;
  gap: var(--vc-space-9);
  align-items: center;
  animation: marquee 40s linear infinite;
  width: max-content;
}
.trust-marquee img {
  height: 36px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.5;
  transition: opacity 0.2s var(--vc-ease);
}
.trust-marquee img:hover { opacity: 1; }

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* =====================================================================
   4. 数字滚动统计条（暗色玻璃拟态）
   ===================================================================== */
.stats-strip {
  background: var(--vc-dark-bg);
  padding: var(--vc-space-9) 0;
  position: relative;
  overflow: hidden;
}
.stats-strip::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(91, 141, 239, 0.15) 0%, transparent 60%);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--vc-space-5);
  position: relative;
  z-index: 1;
}
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
.stat-card {
  text-align: center;
  padding: var(--vc-space-6) var(--vc-space-4);
  background: var(--vc-dark-card);
  border: 1px solid var(--vc-dark-border);
  border-radius: var(--vc-radius-lg);
  backdrop-filter: blur(10px);
  transition: transform 0.2s var(--vc-ease), border-color 0.2s var(--vc-ease);
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--vc-neon-blue);
}
.stat-card .stat-num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--vc-fw-bold);
  background: var(--vc-gradient-1);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: var(--vc-space-2);
}
.stat-card .stat-num .plus,
.stat-card .stat-num .pct {
  font-size: 0.6em;
  color: var(--vc-neon-cyan);
  -webkit-text-fill-color: var(--vc-neon-cyan);
}
.stat-card .stat-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--vc-fs-sm);
}

/* =====================================================================
   5. Discover 三列（暗色玻璃卡）
   ===================================================================== */
.discover-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--vc-space-5);
}
@media (max-width: 992px) {
  .discover-grid { grid-template-columns: 1fr; }
}
.discover-card {
  position: relative;
  padding: var(--vc-space-7) var(--vc-space-5);
  background: var(--vc-dark-card);
  border: 1px solid var(--vc-dark-border);
  border-radius: var(--vc-radius-lg);
  color: #ffffff;
  overflow: hidden;
  transition: transform 0.3s var(--vc-ease), border-color 0.3s var(--vc-ease);
  backdrop-filter: blur(10px);
}
.discover-card:hover {
  transform: translateY(-8px);
  border-color: var(--vc-neon-blue);
}
.discover-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--vc-gradient-1);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--vc-ease);
}
.discover-card:hover::before { transform: scaleX(1); }
.discover-card .num {
  font-size: var(--vc-fs-lg);
  font-weight: var(--vc-fw-bold);
  background: var(--vc-gradient-1);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
  margin-bottom: var(--vc-space-3);
  word-break: break-word;
  overflow-wrap: break-word;
}
.discover-card h3 {
  color: #ffffff;
  font-size: var(--vc-fs-lg);
  margin-bottom: var(--vc-space-3);
}
.discover-card p {
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: var(--vc-space-5);
}
.discover-card .discover-cta {
  color: var(--vc-neon-cyan);
  text-decoration: none;
  font-weight: var(--vc-fw-medium);
}
.discover-card .discover-cta:hover { color: #ffffff; }

/* =====================================================================
   6. Capabilities 步骤区（暗色）
   ===================================================================== */
.cap-section {
  background: var(--vc-dark-bg);
  color: #ffffff;
  padding: var(--vc-space-9) 0;
  position: relative;
  overflow: hidden;
}
.cap-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--vc-space-3);
  margin-bottom: var(--vc-space-6);
}
@media (max-width: 768px) {
  .cap-tabs { grid-template-columns: 1fr; }
}
.cap-tab {
  padding: var(--vc-space-4);
  background: var(--vc-dark-card);
  border: 1px solid var(--vc-dark-border);
  border-radius: var(--vc-radius-md);
  cursor: pointer;
  transition: all 0.2s var(--vc-ease);
  color: #ffffff;
  text-align: left;
}
.cap-tab:hover { border-color: var(--vc-neon-blue); }
.cap-tab.active {
  background: rgba(91, 141, 239, 0.15);
  border-color: var(--vc-neon-blue);
}
.cap-tab .step {
  font-size: var(--vc-fs-xs);
  color: var(--vc-neon-cyan);
  letter-spacing: 0.2em;
  margin-bottom: var(--vc-space-2);
}
.cap-tab h4 {
  font-size: var(--vc-fs-md);
  color: #ffffff;
  margin: 0;
}
.cap-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: var(--vc-space-7);
  align-items: center;
  animation: fadeInUp 0.5s var(--vc-ease);
}
.cap-panel.active { display: grid; }
@media (max-width: 768px) {
  .cap-panel { grid-template-columns: 1fr; }
}
.cap-panel .cap-text h3 {
  font-size: var(--vc-fs-2xl);
  color: #ffffff;
  margin-bottom: var(--vc-space-4);
}
.cap-panel .cap-text p {
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--vc-fs-md);
  margin-bottom: var(--vc-space-5);
}
.cap-panel .cap-text ul {
  list-style: none;
  padding: 0;
  color: rgba(255, 255, 255, 0.8);
}
.cap-panel .cap-text li {
  padding: var(--vc-space-2) 0;
  padding-left: var(--vc-space-5);
  position: relative;
}
.cap-panel .cap-text li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--vc-neon-cyan);
}
.cap-panel .cap-img {
  border-radius: var(--vc-radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  border: 1px solid var(--vc-dark-border);
}
.cap-panel .cap-img img {
  width: 100%;
  height: auto;
  display: block;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =====================================================================
   7. 案例区（暗色视频卡）
   ===================================================================== */
.cases-section {
  background: var(--vc-dark-bg-2);
  color: #ffffff;
  padding: var(--vc-space-9) 0;
}
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--vc-space-5);
}
@media (max-width: 992px) { .case-grid { grid-template-columns: 1fr; } }
.case-card {
  position: relative;
  background: var(--vc-dark-card);
  border: 1px solid var(--vc-dark-border);
  border-radius: var(--vc-radius-lg);
  overflow: hidden;
  transition: transform 0.3s var(--vc-ease), border-color 0.3s var(--vc-ease);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}
.case-card:hover {
  transform: translateY(-6px);
  border-color: var(--vc-neon-blue);
}
.case-card .case-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #000;
}
.case-card .case-thumb video,
.case-card .case-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--vc-ease);
}
.case-card:hover .case-thumb video,
.case-card:hover .case-thumb img {
  transform: scale(1.05);
}
.case-card .case-thumb .play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.3s var(--vc-ease);
}
.case-card:hover .case-thumb .play { opacity: 1; }
.case-card .case-thumb .play svg {
  width: 56px; height: 56px;
  background: var(--vc-gradient-1);
  border-radius: 50%;
  padding: 14px;
  box-shadow: 0 8px 24px rgba(91, 141, 239, 0.4);
}
.case-card .case-body { padding: var(--vc-space-5); }
.case-card .case-brand {
  font-size: var(--vc-fs-lg);
  font-weight: var(--vc-fw-bold);
  color: #ffffff;
  margin-bottom: var(--vc-space-2);
}
.case-card .case-desc {
  color: rgba(255, 255, 255, 0.65);
  font-size: var(--vc-fs-sm);
  margin-bottom: var(--vc-space-3);
}
.case-card .case-link {
  color: var(--vc-neon-cyan);
  text-decoration: none;
  font-size: var(--vc-fs-sm);
  font-weight: var(--vc-fw-medium);
}

/* =====================================================================
   8. 下载 CTA 区（亮色 + 渐变背景）
   ===================================================================== */
.download-cta {
  position: relative;
  padding: var(--vc-space-9) 0;
  background: linear-gradient(135deg, #0d3b66 0%, #1a5490 50%, #2a5a8c 100%);
  color: #ffffff;
  overflow: hidden;
}
.download-cta::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(79, 209, 197, 0.2) 0%, transparent 40%),
    radial-gradient(circle at 80% 50%, rgba(238, 150, 75, 0.15) 0%, transparent 40%);
}
.download-cta .container { position: relative; z-index: 1; }
.download-cta h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  color: #ffffff;
  margin-bottom: var(--vc-space-4);
}
.download-cta p {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--vc-fs-md);
  margin-bottom: var(--vc-space-6);
}
.download-cta .dl-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--vc-space-4);
  justify-content: center;
  margin-bottom: var(--vc-space-5);
}
.download-cta .dl-card {
  flex: 1 1 280px;
  max-width: 320px;
  padding: var(--vc-space-5);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--vc-radius-md);
  backdrop-filter: blur(10px);
  text-align: center;
  text-decoration: none;
  color: #ffffff;
  transition: transform 0.2s var(--vc-ease), background 0.2s var(--vc-ease);
}
.download-cta .dl-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}
.download-cta .dl-card .ver {
  font-size: var(--vc-fs-xs);
  color: var(--vc-neon-cyan);
  letter-spacing: 0.1em;
  margin-bottom: var(--vc-space-2);
}
.download-cta .dl-card .name {
  font-size: var(--vc-fs-lg);
  font-weight: var(--vc-fw-bold);
  margin-bottom: var(--vc-space-1);
}
.download-cta .dl-card .meta {
  font-size: var(--vc-fs-xs);
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--vc-space-4);
}
.download-cta .dl-card .btn-go {
  display: inline-flex;
  align-items: center;
  gap: var(--vc-space-2);
  padding: var(--vc-space-3) var(--vc-space-5);
  background: #ffffff;
  color: var(--vc-color-brand-600);
  border-radius: 999px;
  font-weight: var(--vc-fw-medium);
  font-size: var(--vc-fs-sm);
}

/* =====================================================================
   9. 滚动揭示动画
   ===================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--vc-ease), transform 0.8s var(--vc-ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* =====================================================================
   10. 滚动进度条 + 鼠标跟随光标
   ===================================================================== */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: linear-gradient(90deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.7);
}

.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9998;
  border-radius: 50%;
  transition: opacity 0.2s;
}
.cursor-dot {
  width: 8px; height: 8px;
  background: #06b6d4;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 12px #06b6d4, 0 0 24px rgba(6, 182, 212, 0.5);
}
.cursor-ring {
  width: 36px; height: 36px;
  border: 1.5px solid rgba(6, 182, 212, 0.6);
  transform: translate(-50%, -50%);
  transition: width 0.25s var(--vc-ease),
              height 0.25s var(--vc-ease),
              border-color 0.25s var(--vc-ease),
              background 0.25s var(--vc-ease),
              transform 0.15s var(--vc-ease);
}
.cursor-ring.hover {
  width: 60px;
  height: 60px;
  border-color: #06b6d4;
  background: rgba(6, 182, 212, 0.08);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}
@media (max-width: 1024px) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* 滚动到顶按钮 */
.scroll-top {
  position: fixed;
  bottom: var(--vc-space-6);
  right: var(--vc-space-6);
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: #06b6d4;
  border: 1px solid rgba(6, 182, 212, 0.3);
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 20px rgba(6, 182, 212, 0.15);
  z-index: 9990;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}
.scroll-top:hover {
  border-color: #06b6d4;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 30px rgba(6, 182, 212, 0.3);
}

/* =====================================================================
   11. 暗色 footer 工业风设计
   ===================================================================== */
.footer-vc-dark {
  background: #0a1525;
  color: rgba(255, 255, 255, 0.65);
  padding: 80px 0 0;
  border-top: 1px solid rgba(79, 209, 197, 0.2);
  position: relative;
  overflow: hidden;
  font-size: 14px;
}

/* 顶部装饰条 */
.footer-vc-dark::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    #4fd1c5 0%,
    #4fd1c5 33%,
    #a78bfa 33%,
    #a78bfa 66%,
    #5b8def 66%,
    #5b8def 100%);
}

.footer-vc-dark .container {
  position: relative;
  z-index: 1;
}

/* 主内容区 */
.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: 60px;
  padding-bottom: 60px;
}

/* 品牌区 */
.footer-brand-section {
  padding-right: 40px;
}

.footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #4fd1c5, #5b8def);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-brand-icon svg {
  width: 18px;
  height: 18px;
  color: #ffffff;
}

.footer-tagline {
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 24px;
}

/* 导航区 */
.footer-nav-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.footer-nav-group h4 {
  font-size: 12px;
  font-weight: 600;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid #4fd1c5;
  display: inline-block;
}

.footer-nav-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav-group li {
  margin-bottom: 12px;
}

.footer-nav-group a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: 14px;
  transition: all 0.2s ease;
  display: inline-block;
}

.footer-nav-group a:hover {
  color: #4fd1c5;
  transform: translateX(4px);
}

/* 联系卡片 */
.footer-contact-card {
  background: rgba(79, 209, 197, 0.05);
  border: 1px solid rgba(79, 209, 197, 0.15);
  border-radius: 12px;
  padding: 28px;
  height: fit-content;
}

.footer-contact-card h4 {
  font-size: 12px;
  font-weight: 600;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid #4fd1c5;
  display: inline-block;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.contact-item:last-child {
  margin-bottom: 0;
}

.contact-icon-wrap {
  width: 40px;
  height: 40px;
  background: rgba(79, 209, 197, 0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon-wrap svg {
  width: 20px;
  height: 20px;
  color: #4fd1c5;
}

.contact-content {
  flex: 1;
  min-width: 0;
}

.contact-label {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.contact-value {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.contact-value a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.contact-value a:hover {
  color: #4fd1c5;
}

/* 底部栏 */
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copyright {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-legal a:hover {
  color: rgba(255, 255, 255, 0.7);
}

/* 响应式 */
@media (max-width: 992px) {
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand-section {
    grid-column: 1 / -1;
    padding-right: 0;
  }
}

@media (max-width: 768px) {
  .footer-vc-dark {
    padding: 60px 0 0;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-bottom: 40px;
  }

  .footer-nav-section {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
}

/* =====================================================================
   12. 产品对比表
   ===================================================================== */
.compare-table-wrap {
  overflow-x: auto;
  border-radius: var(--vc-radius-lg);
  border: 1px solid var(--vc-dark-border);
  background: var(--vc-dark-card);
  backdrop-filter: blur(10px);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  color: #ffffff;
  font-size: var(--vc-fs-sm);
  min-width: 720px;
}
.compare-table thead th {
  position: sticky;
  top: 0;
  background: rgba(10, 21, 48, 0.95);
  backdrop-filter: blur(10px);
  padding: var(--vc-space-4) var(--vc-space-3);
  text-align: center;
  font-weight: var(--vc-fw-bold);
  border-bottom: 2px solid var(--vc-dark-border);
}
.compare-table thead th:first-child {
  text-align: left;
  background: transparent;
  border-bottom: 2px solid var(--vc-dark-border);
}
.compare-table thead th .v-name {
  display: block;
  font-size: var(--vc-fs-base);
  color: var(--vc-neon-cyan);
  margin-top: 4px;
}
.compare-table thead th.recommended {
  background: linear-gradient(180deg, rgba(91,141,239,0.25) 0%, rgba(10,21,48,0.95) 100%);
  border-bottom-color: var(--vc-neon-blue);
}
.compare-table thead th.recommended .v-name {
  color: var(--vc-neon-blue);
}
.compare-table tbody td {
  padding: var(--vc-space-3) var(--vc-space-3);
  text-align: center;
  border-bottom: 1px solid var(--vc-dark-border);
  vertical-align: middle;
}
.compare-table tbody td:first-child {
  text-align: left;
  color: rgba(255,255,255,0.85);
  font-weight: var(--vc-fw-medium);
}
.compare-table tbody td.group-row {
  background: rgba(91,141,239,0.08);
  color: var(--vc-neon-cyan);
  font-weight: var(--vc-fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--vc-fs-xs);
  text-align: left;
}
.compare-table tbody tr:hover td:not(.group-row) {
  background: rgba(91,141,239,0.05);
}
.compare-table .check {
  color: var(--vc-neon-cyan);
  font-size: var(--vc-fs-md);
  font-weight: var(--vc-fw-bold);
}
.compare-table .dash {
  color: rgba(255,255,255,0.3);
}
.compare-table .badge-rec {
  display: inline-block;
  padding: 2px 8px;
  background: var(--vc-neon-blue);
  color: #ffffff;
  border-radius: 999px;
  font-size: var(--vc-fs-xs);
  font-weight: var(--vc-fw-bold);
  margin-left: var(--vc-space-2);
}

/* 产品线标签 */
.product-line-tabs {
  display: flex;
  justify-content: center;
  gap: var(--vc-space-3);
  margin-bottom: var(--vc-space-6);
  flex-wrap: wrap;
}
.product-line-tab {
  padding: var(--vc-space-3) var(--vc-space-6);
  background: var(--vc-dark-card);
  border: 1px solid var(--vc-dark-border);
  border-radius: 999px;
  color: rgba(255,255,255,0.7);
  font-weight: var(--vc-fw-medium);
  cursor: pointer;
  transition: all 0.2s var(--vc-ease);
}
.product-line-tab:hover {
  border-color: var(--vc-neon-blue);
  color: #ffffff;
}
.product-line-tab.active {
  background: var(--vc-gradient-1);
  color: #ffffff;
  border-color: transparent;
}

.line-panel {
  display: none !important;
  visibility: hidden !important;
  height: 0 !important;
  min-height: 0 !important;
  max-height: 0 !important;
  overflow: hidden !important;
  margin: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  opacity: 0 !important;
  pointer-events: none !important;
  position: fixed !important;
  left: -99999px !important;
  top: -99999px !important;
  width: 1px !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
}
.line-panel.active {
  display: block !important;
  visibility: visible !important;
  height: auto !important;
  min-height: 0 !important;
  max-height: none !important;
  overflow: visible !important;
  margin: 0 !important;
  padding: var(--vc-space-7) 0 var(--vc-space-9) !important;
  opacity: 1 !important;
  pointer-events: auto !important;
  background: var(--vc-dark-bg) !important;
  position: relative !important;
  left: auto !important;
  top: auto !important;
  width: auto !important;
  clip: auto !important;
  white-space: normal !important;
  animation: fadeInUp 0.5s var(--vc-ease);
}

/* =====================================================================
   13. 减少动画兼容
   ===================================================================== */
@media (prefers-reduced-motion: reduce) {
  .trust-marquee,
  .hero-float-card,
  .pulse { animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* =====================================================================
   14. Hero CTA 按钮组 + 玻璃按钮
   ===================================================================== */
.hero-cta-group {
  margin-top: var(--vc-space-5) !important;
}
.hero-cta-group .btn-vc-magnetic {
  font-size: var(--vc-fs-md);
  padding: var(--vc-space-3) var(--vc-space-6);
}

.btn-vc-glass {
  display: inline-flex;
  align-items: center;
  gap: var(--vc-space-2);
  padding: var(--vc-space-3) var(--vc-space-5);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--vc-radius-md);
  color: #ffffff;
  text-decoration: none;
  font-weight: var(--vc-fw-medium);
  font-size: var(--vc-fs-base);
  backdrop-filter: blur(10px);
  transition: all var(--vc-dur-base) var(--vc-ease);
}
.btn-vc-glass:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--vc-neon-cyan);
  color: #ffffff;
  transform: translateY(-2px);
}
.btn-vc-glass:focus-visible {
  outline: 2px solid var(--vc-neon-cyan);
  outline-offset: 2px;
}

/* =====================================================================
   15. VC5.0 全新发布专区
   ===================================================================== */
.vc5-launch {
  position: relative;
  background: linear-gradient(135deg, #050a18 0%, #0a1530 60%, #0d1f3a 100%);
  padding: var(--vc-space-9) 0;
  overflow: hidden;
  isolation: isolate;
}
.vc5-launch::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(238, 150, 75, 0.18) 0%, transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(91, 141, 239, 0.20) 0%, transparent 50%);
  z-index: -1;
}
.vc5-launch .launch-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--vc-space-2);
  padding: 6px 16px;
  background: linear-gradient(135deg, rgba(238,150,75,0.15) 0%, rgba(238,90,111,0.15) 100%);
  border: 1px solid rgba(238, 150, 75, 0.4);
  border-radius: 999px;
  color: var(--vc-color-accent-500);
  font-size: var(--vc-fs-sm);
  font-weight: var(--vc-fw-bold);
  letter-spacing: 0.1em;
  margin-bottom: var(--vc-space-4);
}
.vc5-launch .launch-tag .dot {
  width: 8px; height: 8px;
  background: var(--vc-color-accent-500);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--vc-color-accent-500);
  animation: pulse 2s ease-in-out infinite;
}
.vc5-launch .launch-title {
  color: #ffffff;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: var(--vc-fw-bold);
  line-height: 1.15;
  margin-bottom: var(--vc-space-4);
}
.vc5-launch .launch-sub {
  color: rgba(255,255,255,0.7);
  font-size: var(--vc-fs-md);
  max-width: 540px;
  margin-bottom: var(--vc-space-5);
  line-height: 1.7;
}
.vc5-launch .launch-points {
  list-style: none;
  padding: 0; margin: 0 0 var(--vc-space-5) 0;
  display: grid;
  gap: var(--vc-space-3);
}
.vc5-launch .launch-points li {
  display: flex;
  align-items: center;
  gap: var(--vc-space-3);
  color: rgba(255,255,255,0.85);
  font-size: var(--vc-fs-base);
}
.vc5-launch .launch-points svg {
  flex-shrink: 0;
  color: var(--vc-neon-cyan);
  background: rgba(79, 209, 197, 0.12);
  padding: 4px;
  border-radius: 50%;
  width: 26px; height: 26px;
}

.vc5-launch .launch-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--vc-radius-lg);
  padding: var(--vc-space-6);
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.vc5-launch .launch-card-badge {
  position: absolute;
  top: -16px; right: var(--vc-space-5);
  padding: 6px 16px;
  background: linear-gradient(135deg, #ee964b 0%, #ee5a6f 100%);
  color: #ffffff;
  font-weight: var(--vc-fw-bold);
  font-size: var(--vc-fs-sm);
  border-radius: 999px;
  letter-spacing: 0.1em;
  box-shadow: 0 4px 16px rgba(238, 90, 111, 0.4);
}
.vc5-launch .launch-card-mock {
  display: grid;
  gap: var(--vc-space-3);
  margin-bottom: var(--vc-space-5);
}
.vc5-launch .mock-row {
  display: flex;
  align-items: center;
  gap: var(--vc-space-3);
  padding: var(--vc-space-3) var(--vc-space-4);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--vc-radius-sm);
  color: rgba(255,255,255,0.85);
  font-size: var(--vc-fs-sm);
}
.vc5-launch .mock-row strong {
  margin-left: auto;
  color: var(--vc-neon-cyan);
  font-size: var(--vc-fs-xs);
  letter-spacing: 0.1em;
}
.vc5-launch .mock-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 8px currentColor;
}
.vc5-launch .launch-card-foot {
  padding-top: var(--vc-space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}
.vc5-launch .foot-num {
  font-size: var(--vc-fs-3xl);
  font-weight: var(--vc-fw-bold);
  background: var(--vc-gradient-2);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}
.vc5-launch .foot-lbl {
  color: rgba(255,255,255,0.6);
  font-size: var(--vc-fs-sm);
  margin-top: 4px;
}

/* =====================================================================
   16. 两条产品线大入口
   ===================================================================== */
.line-entry {
  background: var(--vc-dark-bg);
  padding: var(--vc-space-9) 0;
}
.line-entry-card {
  display: flex;
  flex-direction: column;
  gap: var(--vc-space-4);
  padding: var(--vc-space-6);
  background: var(--vc-dark-card);
  border: 1px solid var(--vc-dark-border);
  border-radius: var(--vc-radius-lg);
  text-decoration: none;
  color: inherit;
  height: 100%;
  transition: all var(--vc-dur-base) var(--vc-ease);
  position: relative;
  overflow: hidden;
}
.line-entry-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(79, 209, 197, 0.06) 100%);
  opacity: 0;
  transition: opacity var(--vc-dur-base) var(--vc-ease);
  pointer-events: none;
}
.line-entry-card:hover {
  border-color: var(--vc-neon-cyan);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(79, 209, 197, 0.15);
}
.line-entry-card:hover::after {
  opacity: 1;
}
.line-entry-icon {
  width: 64px; height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--vc-radius-md);
  box-shadow: 0 8px 24px rgba(91, 141, 239, 0.3);
}
.line-entry-tag {
  color: var(--vc-neon-cyan);
  font-size: var(--vc-fs-xs);
  font-weight: var(--vc-fw-bold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--vc-space-2);
}
.line-entry-card h3 {
  color: #ffffff;
  font-size: var(--vc-fs-lg);
  font-weight: var(--vc-fw-bold);
  margin-bottom: var(--vc-space-3);
  line-height: 1.3;
}
.line-entry-card p {
  color: rgba(255,255,255,0.7);
  font-size: var(--vc-fs-sm);
  margin-bottom: var(--vc-space-4);
  line-height: 1.6;
}
.line-entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--vc-space-4);
}
.meta-pill {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  color: rgba(255,255,255,0.75);
  font-size: var(--vc-fs-xs);
}
.line-entry-arrow {
  margin-top: auto;
  padding-top: var(--vc-space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--vc-neon-cyan);
  font-size: var(--vc-fs-sm);
  font-weight: var(--vc-fw-medium);
}
.line-entry-arrow .arrow {
  transition: transform var(--vc-dur-base) var(--vc-ease);
}
.line-entry-card:hover .line-entry-arrow .arrow {
  transform: translateX(6px);
}

/* =====================================================================
   17. Sticky CTA 栏（移动端）
   ===================================================================== */
.sticky-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(5, 10, 24, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--vc-space-3) var(--vc-space-4);
  z-index: 1000;
  gap: var(--vc-space-2);
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.3);
}
.sticky-cta a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: var(--vc-space-3) var(--vc-space-4);
  border-radius: var(--vc-radius-md);
  text-decoration: none;
  font-weight: var(--vc-fw-medium);
  font-size: var(--vc-fs-sm);
  min-height: 44px;
  transition: all var(--vc-dur-fast) var(--vc-ease);
}
.sticky-cta .sticky-primary {
  background: var(--vc-gradient-2);
  color: #ffffff;
  flex: 1.4;
}
.sticky-cta .sticky-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(238, 90, 111, 0.4);
}
.sticky-cta .sticky-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
}
.sticky-cta .sticky-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}
.sticky-cta .sticky-tertiary {
  background: transparent;
  color: var(--vc-neon-cyan);
  border: 1px solid var(--vc-neon-cyan);
  padding: var(--vc-space-3);
  flex: 0 0 auto;
}
.sticky-cta .sticky-tertiary:hover {
  background: rgba(79, 209, 197, 0.1);
}
@media (max-width: 768px) {
  .sticky-cta { display: flex; }
  body { padding-bottom: 80px; }
}

/* =====================================================================
   18. Breadcrumb 导航
   ===================================================================== */
.breadcrumb-vc {
  background: rgba(5, 10, 24, 0.6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--vc-space-3) 0;
  margin-bottom: 0;
}
.breadcrumb-vc ol {
  list-style: none;
  padding: 0; margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: var(--vc-fs-sm);
}
.breadcrumb-vc li {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.55);
}
.breadcrumb-vc li a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: color var(--vc-dur-fast) var(--vc-ease);
}
.breadcrumb-vc li a:hover {
  color: var(--vc-neon-cyan);
}
.breadcrumb-vc li[aria-current="page"] {
  color: var(--vc-neon-cyan);
  font-weight: var(--vc-fw-medium);
}
.breadcrumb-vc li + li::before {
  content: "/";
  color: rgba(255, 255, 255, 0.3);
  margin-right: 6px;
}

/* =====================================================================
   19. 右下浮动咨询按钮
   ===================================================================== */
.float-contact {
  position: fixed;
  bottom: var(--vc-space-5);
  right: var(--vc-space-5);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: var(--vc-space-3);
  align-items: flex-end;
}
@media (max-width: 768px) {
  .float-contact { bottom: 96px; }
}
.float-contact-btn {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--vc-gradient-2);
  border: none;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(238, 90, 111, 0.5);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--vc-dur-base) var(--vc-ease);
  position: relative;
}
.float-contact-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(238, 90, 111, 0.6);
}
.float-contact-btn::before {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--vc-color-accent-500);
  opacity: 0.6;
  animation: ping 2s ease-out infinite;
}
@keyframes ping {
  0% { transform: scale(0.8); opacity: 0.8; }
  100% { transform: scale(1.5); opacity: 0; }
}
.float-contact-btn::after {
  content: "联系销售";
  position: absolute;
  right: 70px;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(5, 10, 24, 0.95);
  color: #ffffff;
  padding: 8px 14px;
  border-radius: var(--vc-radius-sm);
  font-size: var(--vc-fs-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--vc-dur-base) var(--vc-ease);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.float-contact-btn:hover::after {
  opacity: 1;
}

/* =====================================================================
   20. 产品页版本卡升级（推荐徽章 / CTA）
   ===================================================================== */
.version-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--vc-space-6);
  background: var(--vc-dark-card);
  border: 1px solid var(--vc-dark-border);
  border-radius: var(--vc-radius-lg);
  transition: all var(--vc-dur-base) var(--vc-ease);
  overflow: hidden;
}
.version-card:hover {
  transform: translateY(-4px);
  border-color: var(--vc-neon-cyan);
  box-shadow: 0 16px 48px rgba(79, 209, 197, 0.15);
}
.version-card.is-recommended {
  background: linear-gradient(135deg, rgba(91, 141, 239, 0.12) 0%, rgba(10, 21, 48, 0.7) 100%);
  border-color: var(--vc-neon-blue);
  box-shadow: 0 0 0 1px rgba(91, 141, 239, 0.2);
}
.version-card.is-recommended:hover {
  box-shadow: 0 16px 48px rgba(91, 141, 239, 0.25);
}
.version-card .recommended-badge {
  position: absolute;
  top: var(--vc-space-3);
  right: var(--vc-space-3);
  padding: 4px 12px;
  background: linear-gradient(135deg, #ee964b 0%, #ee5a6f 100%);
  color: #ffffff;
  font-size: var(--vc-fs-xs);
  font-weight: var(--vc-fw-bold);
  letter-spacing: 0.1em;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(238, 90, 111, 0.4);
}
.version-card .version-icon {
  width: 48px; height: 48px;
  border-radius: var(--vc-radius-md);
  background: linear-gradient(135deg, rgba(79, 209, 197, 0.15) 0%, rgba(91, 141, 239, 0.15) 100%);
  border: 1px solid rgba(79, 209, 197, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--vc-space-4);
}
.version-card.is-recommended .version-icon {
  background: linear-gradient(135deg, rgba(238, 150, 75, 0.2) 0%, rgba(238, 90, 111, 0.2) 100%);
  border-color: rgba(238, 150, 75, 0.4);
}
.version-card .version-name {
  color: #ffffff;
  font-size: var(--vc-fs-xl);
  font-weight: var(--vc-fw-bold);
  margin-bottom: 4px;
}
.version-card .version-tag {
  color: var(--vc-neon-cyan);
  font-size: var(--vc-fs-xs);
  font-weight: var(--vc-fw-bold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--vc-space-3);
}
.version-card .version-desc {
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--vc-fs-sm);
  line-height: 1.65;
  margin-bottom: var(--vc-space-5);
  flex: 1;
}
.version-card .version-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: var(--vc-space-3) var(--vc-space-4);
  border-radius: var(--vc-radius-sm);
  text-decoration: none;
  font-weight: var(--vc-fw-medium);
  font-size: var(--vc-fs-sm);
  transition: all var(--vc-dur-base) var(--vc-ease);
  border: 1px solid transparent;
  margin-top: auto;
}
.version-card .version-cta-primary {
  background: var(--vc-gradient-2);
  color: #ffffff;
}
.version-card .version-cta-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(238, 90, 111, 0.4);
}
.version-card .version-cta-secondary {
  background: transparent;
  border-color: var(--vc-neon-cyan);
  color: var(--vc-neon-cyan);
}
.version-card .version-cta-secondary:hover {
  background: rgba(79, 209, 197, 0.1);
}

/* =====================================================================
   21. 下载页版本卡片升级
   ===================================================================== */
.dl-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--vc-space-5);
  background: var(--vc-dark-card);
  border: 1px solid var(--vc-dark-border);
  border-radius: var(--vc-radius-lg);
  overflow: hidden;
  transition: all var(--vc-dur-base) var(--vc-ease);
}
.dl-card:hover {
  border-color: var(--vc-neon-cyan);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(79, 209, 197, 0.15);
}
.dl-card .dl-thumb {
  aspect-ratio: 16 / 9;
  border-radius: var(--vc-radius-md);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(79, 209, 197, 0.08) 0%, rgba(91, 141, 239, 0.08) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--vc-space-4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
}
.dl-card .dl-thumb .dl-mock-icon {
  font-size: 48px;
  opacity: 0.4;
  filter: grayscale(0.3);
}
.dl-card .dl-thumb .dl-thumb-badge {
  position: absolute;
  top: var(--vc-space-3);
  left: var(--vc-space-3);
  padding: 4px 10px;
  background: rgba(5, 10, 24, 0.8);
  border: 1px solid var(--vc-neon-cyan);
  color: var(--vc-neon-cyan);
  font-size: var(--vc-fs-xs);
  font-weight: var(--vc-fw-bold);
  border-radius: 999px;
  letter-spacing: 0.1em;
  backdrop-filter: blur(10px);
}
.dl-card .dl-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--vc-space-3);
  margin-bottom: var(--vc-space-2);
}
.dl-card .dl-card-name {
  color: #ffffff;
  font-size: var(--vc-fs-md);
  font-weight: var(--vc-fw-bold);
  margin: 0;
}
.dl-card .dl-card-tag {
  padding: 3px 10px;
  background: rgba(79, 209, 197, 0.12);
  border: 1px solid rgba(79, 209, 197, 0.3);
  color: var(--vc-neon-cyan);
  font-size: var(--vc-fs-xs);
  font-weight: var(--vc-fw-medium);
  border-radius: 999px;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.dl-card .dl-card-desc {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--vc-fs-sm);
  line-height: 1.6;
  margin-bottom: var(--vc-space-3);
  flex: 1;
}
.dl-card .dl-card-meta {
  display: flex;
  align-items: center;
  gap: var(--vc-space-3);
  padding: var(--vc-space-2) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: var(--vc-space-3);
  font-size: var(--vc-fs-xs);
  color: rgba(255, 255, 255, 0.55);
}
.dl-card .dl-card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.dl-card .dl-card-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: var(--vc-space-3) var(--vc-space-4);
  background: var(--vc-gradient-2);
  color: #ffffff;
  text-decoration: none;
  font-weight: var(--vc-fw-medium);
  font-size: var(--vc-fs-sm);
  border-radius: var(--vc-radius-sm);
  transition: all var(--vc-dur-base) var(--vc-ease);
}
.dl-card .dl-card-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(238, 90, 111, 0.4);
}

/* =====================================================================
   22. 电脑配置要求可视化（标签式）
   ===================================================================== */
.req-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--vc-space-3);
}
.req-item {
  display: flex;
  align-items: flex-start;
  gap: var(--vc-space-3);
  padding: var(--vc-space-4);
  background: var(--vc-dark-card);
  border: 1px solid var(--vc-dark-border);
  border-radius: var(--vc-radius-md);
  transition: all var(--vc-dur-base) var(--vc-ease);
}
.req-item:hover {
  border-color: var(--vc-neon-cyan);
  background: rgba(79, 209, 197, 0.05);
}
.req-item .req-icon {
  width: 36px; height: 36px;
  flex-shrink: 0;
  border-radius: var(--vc-radius-sm);
  background: linear-gradient(135deg, rgba(79, 209, 197, 0.15) 0%, rgba(91, 141, 239, 0.15) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--vc-neon-cyan);
}
.req-item .req-text {
  flex: 1;
  min-width: 0;
}
.req-item .req-label {
  color: var(--vc-neon-cyan);
  font-size: var(--vc-fs-xs);
  font-weight: var(--vc-fw-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.req-item .req-value {
  color: #ffffff;
  font-size: var(--vc-fs-sm);
  line-height: 1.5;
}
.req-item .req-sub {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--vc-fs-xs);
  margin-top: 2px;
}

/* 推荐徽章 */
.badge-recommended {
  display: inline-block;
  padding: 3px 12px;
  background: linear-gradient(135deg, #ee964b 0%, #ee5a6f 100%);
  color: #ffffff;
  font-size: var(--vc-fs-xs);
  font-weight: var(--vc-fw-bold);
  letter-spacing: 0.1em;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(238, 90, 111, 0.3);
}

/* details 折叠样式 */
details summary {
  outline: none;
}
details summary::-webkit-details-marker { display: none; }
details[open] summary {
  color: #ffffff !important;
  margin-bottom: var(--vc-space-3);
}
details[open] summary::before {
  content: "▼" !important;
  display: inline-block;
  margin-right: 4px;
  transition: transform 0.2s;
}
details:not([open]) summary::before {
  content: "▶" !important;
  display: inline-block;
  margin-right: 4px;
}

/* =====================================================================
   23. 关键交互微动效（B-9）
   ===================================================================== */

/* 通用：所有 a/button 默认的聚焦反馈（无障碍） */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--vc-neon-cyan);
  outline-offset: 3px;
  border-radius: var(--vc-radius-sm);
  transition: outline-offset 0.15s var(--vc-ease);
}

/* 图片 hover 微缩放（仅 case-card / dl-card） */
.case-card .case-thumb img,
.dl-card .dl-thumb {
  transition: transform 0.5s var(--vc-ease);
}
.case-card:hover .case-thumb img,
.dl-card:hover .dl-thumb {
  transform: scale(1.05);
}

/* 视频点击播放按钮 hover 效果 */
.hero-video-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  overflow: hidden;
  z-index: 1;
}
.hero-video-poster img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.hero-video-poster .play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: rgba(238, 90, 111, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 8px 32px rgba(238, 90, 111, 0.5);
  transition: all 0.3s var(--vc-ease);
  pointer-events: none;
}
.hero-video-poster .play-icon svg {
  margin-left: 4px;  /* 视觉居中 */
}
.hero-video-poster:hover .play-icon {
  transform: translate(-50%, -50%) scale(1.1);
  background: rgba(238, 90, 111, 1);
  box-shadow: 0 12px 40px rgba(238, 90, 111, 0.7);
}
.hero-video-poster::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.4) 100%);
  pointer-events: none;
  z-index: 1;
}

/* 表单交互增强（B-5 部分） */
.form-field {
  position: relative;
  margin-bottom: var(--vc-space-4);
}
.form-field label {
  display: block;
  color: #ffffff;
  font-size: var(--vc-fs-sm);
  font-weight: var(--vc-fw-medium);
  margin-bottom: var(--vc-space-2);
}
.form-field label .required {
  color: #ee5a6f;
  margin-left: 2px;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--vc-radius-sm);
  color: #ffffff;
  font-family: inherit;
  font-size: var(--vc-fs-base);
  transition: all 0.2s var(--vc-ease);
}
.form-field input::placeholder,
.form-field textarea::placeholder {
  color: rgba(255, 255, 255, 0.35);
}
.form-field input:hover,
.form-field select:hover,
.form-field textarea:hover {
  border-color: rgba(255, 255, 255, 0.3);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--vc-neon-cyan);
  outline: none;
  box-shadow: 0 0 0 3px rgba(79, 209, 197, 0.15);
}
.form-field.is-invalid input,
.form-field.is-invalid select,
.form-field.is-invalid textarea {
  border-color: #ee5a6f;
  background: rgba(238, 90, 111, 0.05);
}
.form-field .field-error {
  display: none;
  color: #ee5a6f;
  font-size: var(--vc-fs-xs);
  margin-top: 4px;
}
.form-field.is-invalid .field-error {
  display: block;
  animation: shake 0.3s ease;
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}
.form-field .field-hint {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--vc-fs-xs);
  margin-top: 4px;
}
.form-field.is-valid input,
.form-field.is-valid select {
  border-color: var(--vc-neon-cyan);
}

/* 表单提交反馈 */
.form-feedback {
  display: none;
  padding: var(--vc-space-4);
  border-radius: var(--vc-radius-md);
  margin-bottom: var(--vc-space-4);
  font-size: var(--vc-fs-sm);
  animation: fadeInUp 0.4s var(--vc-ease);
}
.form-feedback.is-success {
  display: block;
  background: rgba(42, 157, 143, 0.15);
  border: 1px solid rgba(42, 157, 143, 0.5);
  color: #6ee7b7;
}
.form-feedback.is-error {
  display: block;
  background: rgba(238, 90, 111, 0.15);
  border: 1px solid rgba(238, 90, 111, 0.5);
  color: #fda4af;
}
.form-feedback.is-loading {
  display: block;
  background: rgba(91, 141, 239, 0.15);
  border: 1px solid rgba(91, 141, 239, 0.5);
  color: #93c5fd;
}

/* 应用场景多选 chip 样式 */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--vc-space-2);
}
.scenario-chip {
  display: flex;
  align-items: center;
  gap: var(--vc-space-2);
  padding: var(--vc-space-3);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--vc-radius-sm);
  cursor: pointer;
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--vc-fs-sm);
  transition: all 0.2s var(--vc-ease);
  user-select: none;
}
.scenario-chip:hover {
  background: rgba(79, 209, 197, 0.08);
  border-color: rgba(79, 209, 197, 0.4);
}
.scenario-chip input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--vc-neon-cyan);
  cursor: pointer;
  margin: 0;
  flex-shrink: 0;
}
.scenario-chip:has(input:checked) {
  background: rgba(79, 209, 197, 0.12);
  border-color: var(--vc-neon-cyan);
  color: #ffffff;
}
.form-field.is-invalid .scenario-chip {
  border-color: rgba(238, 90, 111, 0.4);
}
@media (max-width: 480px) {
  .scenario-grid { grid-template-columns: 1fr; }
}

/* 提交按钮 loading 态 */
button[type="submit"].is-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.7;
}
button[type="submit"].is-loading::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  width: 14px;
  height: 14px;
  margin-top: -7px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* =====================================================================
   24. prefers-reduced-motion 完整适配（B-10）
   ===================================================================== */
@media (prefers-reduced-motion: reduce) {
  /* 全局禁用动画 */
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  /* 移除粒子背景 */
  #hero-particles { display: none !important; }
  /* 视频自动播放改为点击 */
  .hero-video[autoplay] { animation: none !important; }
  /* 浮动按钮 ping 动画停用 */
  .float-contact-btn::before { animation: none !important; }
  /* reveal 直接显示 */
  .reveal { opacity: 1 !important; transform: none !important; }
}
/* =====================================================================
   25. 表单提交状态提示框
   ===================================================================== */
.form-feedback {
  padding: var(--vc-space-4);
  border-radius: var(--vc-radius-md);
  margin-bottom: var(--vc-space-3);
  font-size: var(--vc-fs-sm);
}

.form-feedback.alert-success,
.form-feedback.alert-error {
  background: rgba(3, 7, 18, 0.9);
  border: 1px solid;
  backdrop-filter: blur(10px);
}

.form-feedback.alert-success {
  border-color: var(--vc-neon-cyan);
  color: #ffffff;
}

.form-feedback.alert-error {
  border-color: #ef4444;
  color: #ffffff;
}

.form-feedback.alert-success strong,
.form-feedback.alert-error strong {
  display: block;
  font-size: var(--vc-fs-md);
  margin-bottom: var(--vc-space-2);
}

/* 成功动画 */
@keyframes successPulse {
  0% { box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7); }
  70% { box-shadow: 0 0 0 15px rgba(6, 182, 212, 0); }
  100% { box-shadow: 0 0 0 0 rgba(6, 182, 212, 0); }
}

.form-feedback.alert-success {
  animation: successPulse 1s ease-out;
}

/* =====================================================================
   26. 社交媒体二维码区域
   ===================================================================== */
.social-qr-section {
  margin-top: var(--vc-space-4);
}

.social-qr-section h4 {
  color: #ffffff;
  font-size: var(--vc-fs-sm);
  margin-bottom: var(--vc-space-3);
}

.social-qr-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--vc-space-3);
}

/* 一整行显示 */
.social-qr-row {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: var(--vc-space-4);
}

.social-qr-row .social-qr-item {
  flex: 1;
}

.social-qr-row .social-qr-img {
  width: 70px;
  height: 70px;
}

.social-qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.social-qr-img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: var(--vc-radius-sm);
  background: #ffffff;
  padding: 4px;
  transition: transform 0.3s ease;
}

.social-qr-item:hover .social-qr-img {
  transform: scale(1.1);
}

.social-qr-item span {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--vc-fs-xs);
  margin-top: var(--vc-space-2);
}

/* 移动端适配 */
@media (max-width: 576px) {
  .social-qr-img {
    width: 60px;
    height: 60px;
  }
}

/* =====================================================================
   27. 关注我们 - 独立一行（大图）
   ===================================================================== */
.social-follow-section {
  text-align: center;
  padding: var(--vc-space-5) 0;
  border-top: 1px solid var(--vc-dark-border);
  margin-top: var(--vc-space-5);
}

.social-follow-section h4 {
  color: #ffffff;
  font-size: var(--vc-fs-sm);
  margin-bottom: var(--vc-space-3);
}

.social-qr-large-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--vc-space-6);
}

.social-qr-large-row .social-qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.social-qr-large-row .social-qr-img {
  width: 90px;
  height: 90px;
  cursor: pointer;
}

@media (max-width: 576px) {
  .social-follow-section {
    padding: var(--vc-space-4) 0;
  }
  .social-qr-large-row {
    gap: var(--vc-space-4);
  }
  .social-qr-large-row .social-qr-img {
    width: 70px;
    height: 70px;
  }
}

/* =====================================================================
   28. 二维码弹窗
   ===================================================================== */
.qr-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 10000;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(5px);
}

.qr-modal.show {
  display: flex;
}

.qr-modal-content {
  position: relative;
  background: #ffffff;
  border-radius: var(--vc-radius-md);
  padding: var(--vc-space-4);
  max-width: 90vw;
  max-height: 90vh;
  animation: modalFadeIn 0.3s ease;
}

.qr-modal-content img {
  max-width: 300px;
  max-height: 300px;
  display: block;
}

.qr-modal-close {
  position: absolute;
  top: -15px;
  right: -15px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--vc-dark-bg);
  color: #ffffff;
  border: 2px solid #ffffff;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s;
}

.qr-modal-close:hover {
  background: var(--vc-neon-cyan);
}

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