@keyframes twinkle {
  0%, 100% { opacity: var(--base-op); transform: scale(1); }
  50% { opacity: 0.05; transform: scale(0.5); }
}
@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
@keyframes float-bird {
  0%, 100% { transform: translateX(-50%) translateY(0) rotate(-2deg); }
  50% { transform: translateX(-50%) translateY(-10px) rotate(2deg); }
}
@keyframes pulse-glow {
  0%, 100% { opacity: 0.12; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.22; transform: translate(-50%, -50%) scale(1.15); }
}
@keyframes slide-up {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes border-pulse {
  0%, 100% { box-shadow: 0 0 16px rgba(99,102,241,0.45); }
  50% { box-shadow: 0 0 32px rgba(99,102,241,0.8), 0 0 8px rgba(6,182,212,0.6); }
}
@keyframes watermark-in {
  from { opacity: 0; transform: scale(1.06); }
  to { opacity: 0.35; transform: scale(1); }
}
@keyframes planet-in {
  from { opacity: 0; transform: translateY(20px) scale(0.7); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes bird-in {
  from { opacity: 0; transform: translateX(-50%) translateY(30px) scale(0.8); }
  to { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
}
@keyframes stars-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
/* overflow-x: clip 彻底禁止横向滚动（hidden 仍可被触屏/程序滚动，露出右侧溢出黑区） */
html, body { height: 100%; width: 100%; overflow-x: hidden; overflow-x: clip; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #fff;
  background: linear-gradient(135deg, #070b18 0%, #0d1230 40%, #0a0e22 70%, #060912 100%);
  background-attachment: fixed;
}

.page {
  min-height: 100vh;
  width: 100%;
  position: relative;
}

.star-field {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
  animation: stars-in 1.2s ease both;
}
.star {
  position: absolute;
  border-radius: 50%;
  background: #fff;
}

/* Three.js 3D 画布：Hero 背景真 3D 视觉（铺满整个首屏视口）
   pointer-events:auto 允许节点网络交互（hero 内容 z-index:10 在上层仍可正常点击） */
#hero-3d {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100vh;
  display: block;
  pointer-events: auto;
  z-index: 2;
}

.hero-mesh {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  background-image:
    linear-gradient(rgba(99,102,241,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.04) 1px, transparent 1px);
  background-size: 100px 100px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 10%, transparent 65%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 10%, transparent 65%);
  animation: mesh-pulse 10s ease-in-out infinite;
}

.watermark-wrap {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  user-select: none;
  z-index: 1;
}
.watermark-text {
  font-size: 12vw;
  font-weight: 900;
  color: rgba(255,255,255,0.35);
  font-family: 'Noto Sans SC', sans-serif;
  line-height: 1;
  animation: watermark-in 1.5s ease both;
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  /* 位于统一导航 .cu-nav（72px 高）之下，避免两层 header 重叠 */
  top: 72px;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  /* 两侧留白与主站容器对齐（原固定 32px，宽屏下内容顶到屏幕边缘） */
  padding: 16px clamp(24px, 6vw, 120px);
  background: rgba(7, 11, 24, 0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  opacity: 0;
  animation: fade-in 0.6s 2s ease both;
}
.navbar-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.navbar-logo img {
  height: 44px;
  width: auto;
  object-fit: contain;
  animation: fade-in 0.8s 2s ease both;
  opacity: 0;
}
.navbar-nav {
  display: none;
  align-items: center;
  gap: 32px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
@media (min-width: 768px) {
  .navbar-nav { display: flex; }
}
/* 移动端：GGK 自有 navbar 整体隐藏（页内锚点由 mobile-nav.js 抽屉提供），
   并去掉 hero 为它预留的 76px 顶部空间 */
@media (max-width: 767px) {
  .navbar { display: none; }
  .hero { padding-top: 30px; }
}
.navbar-nav a {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color 0.2s;
  text-align: center;
  position: relative;
  opacity: 0;
  padding: 4px 0;
}
.navbar-nav a:hover { color: #fff; }
.navbar-nav a .underline {
  position: absolute;
  bottom: -2px;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, #818cf8, #06b6d4);
  width: 0;
  transition: width 0.3s;
}
.navbar-nav a:hover .underline { width: 100%; }
.navbar-nav a.nav-active { color: #fff; font-weight: 600; }
.navbar-nav a.nav-active .underline {
  width: 100%;
  height: 2px;
  bottom: -4px;
  background: linear-gradient(90deg, #818cf8, #06b6d4);
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.7);
}
.navbar-right {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
  opacity: 0;
  animation: fade-in 0.8s 2.1s ease both;
}
.lang-toggle {
  display: flex;
  align-items: center;
  border-radius: 9999px;
  padding: 6px 4px;
  gap: 4px;
  font-size: 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
}
.lang-toggle .active {
  padding: 4px 8px;
  border-radius: 9999px;
  color: #fff;
  font-weight: 600;
  background: rgba(99,102,241,0.5);
}
.lang-toggle .inactive {
  padding: 4px 8px;
  border-radius: 9999px;
  color: rgba(255,255,255,0.5);
}
.cta-btn {
  font-size: 18px;
  color: #fff;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  background: linear-gradient(90deg, #6366f1 0%, #06b6d4 100%);
  animation: border-pulse 3s ease-in-out infinite;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.cta-btn:hover { opacity: 0.9; }

/* ── Hero ── */
.hero {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 30px 35px 185px;
  padding-top: calc(30px + 76px);
}
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 17px;
  border-radius: 9999px;
  padding: 8px 23px;
  margin-bottom: 46px;
  background: linear-gradient(135deg, rgba(99,102,241,0.10), rgba(6,182,212,0.08));
  border: 1px solid rgba(129,140,248,0.28);
  color: rgba(255,255,255,0.7);
  opacity: 0;
  transform: scale(0.85);
  filter: drop-shadow(0 0 10px rgba(99,102,241,0.18));
  will-change: transform, opacity;
  animation: bc-enter 0.7s 2.0s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
@keyframes bc-enter {
  0%   { opacity: 0; transform: scale(0.85); }
  60%  { opacity: 1; transform: scale(1.04); }
  100% { opacity: 1; transform: scale(1); }
}
.breadcrumb .dot { opacity: 0.4; }

/* 逐词依次显现 */
.breadcrumb .bc-item {
  display: inline-flex;
  align-items: center;
  opacity: 0;
  transform: translateY(6px);
  animation: bc-item-in 0.5s ease both;
}
.breadcrumb .bc-item:nth-child(1) { animation-delay: 2.20s; }
.breadcrumb .bc-item:nth-child(3) { animation-delay: 2.35s; }
.breadcrumb .bc-item:nth-child(5) { animation-delay: 2.50s; }
.breadcrumb .bc-item:nth-child(7) { animation-delay: 2.65s; }
@keyframes bc-item-in {
  to { opacity: 1; transform: translateY(0); }
}
/* 分隔点跟随相邻词显现 */
.breadcrumb .dot {
  opacity: 0;
  animation: bc-dot-in 0.4s ease both;
}
.breadcrumb .dot:nth-of-type(2)  { animation-delay: 2.30s; }
.breadcrumb .dot:nth-of-type(4)  { animation-delay: 2.45s; }
.breadcrumb .dot:nth-of-type(6)  { animation-delay: 2.60s; }
@keyframes bc-dot-in { to { opacity: 0.4; } }

/* 动作词图标（::before 伪元素，i18n textContent 不影响） */
.breadcrumb .bc-action {
  gap: 5px;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
}
.breadcrumb .bc-action::before {
  content: '';
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}
/* 连接：链路图标 + 轻微脉动 */
.breadcrumb .bc-action-link::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23818cf8' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><path d='M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71'/><path d='M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71'/></svg>");
  will-change: transform;
  animation: bc-link-pulse 2.4s 2.9s ease-in-out infinite;
}
@keyframes bc-link-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.18); }
}
/* 协同：循环图标 + 缓慢旋转 */
.breadcrumb .bc-action-collab::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><polyline points='23 4 23 10 17 10'/><polyline points='1 20 1 14 7 14'/><path d='M3.51 9a9 9 0 0 1 14.85-3.36L23 10'/><path d='M20.49 15a9 9 0 0 1-14.85 3.36L1 14'/></svg>");
  will-change: transform;
  animation: bc-collab-spin 4s 3.1s linear infinite;
}
@keyframes bc-collab-spin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ── Hero 标题：掩膜揭幕 + 流光 ── */
.hero-title {
  position: relative;
  /* 小屏按视口宽度缩放，避免 70px 固定大字在 320px 屏上一行仅 4 字 */
  font-size: clamp(40px, 11vw, 70px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 35px;
}
@media (min-width: 768px) { .hero-title { font-size: 86px; } }
@media (min-width: 1024px) { .hero-title { font-size: 103px; } }

/* 每个词：clip-path 从左到右揭幕，文字本身可保留各自颜色/流光 */
.hero-title .reveal-word {
  display: inline-block;
  clip-path: inset(0 100% 0 0);            /* 初始：完全裁掉右侧 = 不可见 */
  will-change: clip-path;
  animation: hero-reveal 0.9s cubic-bezier(0.65, 0, 0.35, 1) both;
}
.hero-title .reveal-word:nth-child(1) { animation-delay: 2.25s; }
.hero-title .reveal-word:nth-child(2) { animation-delay: 2.45s; }
.hero-title .reveal-word:nth-child(3) { animation-delay: 2.65s; }

/* 扫光带：揭幕期间从左扫到右，与文字揭幕同步 */
.hero-title::after {
  content: '';
  position: absolute;
  top: -8%;
  bottom: -8%;
  left: 0;
  width: 38%;
  background: linear-gradient(100deg,
              transparent 0%,
              rgba(255, 255, 255, 0.10) 30%,
              rgba(129, 140, 248, 0.32) 48%,
              rgba(6, 182, 212, 0.26) 58%,
              transparent 80%);
  opacity: 0;
  pointer-events: none;
  will-change: transform, opacity;
  animation: hero-sheen 1.3s 2.25s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes hero-reveal {
  from { clip-path: inset(0 100% 0 0); }   /* 右侧裁掉100% = 不可见 */
  to   { clip-path: inset(0 0% 0 0); }    /* 右侧裁掉0% = 完全可见 */
}
@keyframes hero-sheen {
  0%   { transform: translateX(-100%); opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateX(320%); opacity: 0; }
}

/* 渐变高亮段：揭幕后才点亮流光，避免与揭幕动画抢 background */
.hero-title .gradient-text {
  background: linear-gradient(90deg, #06b6d4, #6366f1, #818cf8, #06b6d4);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-title .reveal-accent {
  /* 静态光晕：只光栅化一次，不做逐帧 filter 动画，避免卡顿 */
  filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.45)) drop-shadow(0 0 20px rgba(6, 182, 212, 0.22));
  animation: hero-reveal 0.9s 2.45s cubic-bezier(0.65, 0, 0.35, 1) both,
             gradient-shift 4s 3.0s linear infinite;
}
.hero .subtext {
  max-width: 646px;
  margin-bottom: 58px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.hero .subtext > span {
  font-size: 18px;
  line-height: 1.65;
  opacity: 0;
  transform: translateY(10px);
  animation: sub-in 0.6s ease both;
}
.hero .subtext .sub-main {
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  animation-delay: 3.40s;
}
.hero .subtext .sub-support {
  font-weight: 400;
  color: rgba(255, 255, 255, 0.60);
  animation-delay: 3.55s;
}
.hero .subtext .hl-cmd {
  color: rgba(129, 140, 248, 0.95);
  font-weight: 500;
}
.hero .subtext .sub-brand {
  font-weight: 500;
  color: rgba(255, 255, 255, 0.50);
  animation-delay: 3.70s;
}
.hero .subtext .ggk-accent {
  font-weight: 700;
  background: linear-gradient(90deg, #06b6d4, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
@keyframes sub-in {
  to { opacity: 1; transform: translateY(0); }
}
.cta-group {
  display: flex;
  align-items: center;
  gap: 23px;
  margin-bottom: 58px;
  opacity: 0;
  animation: slide-up 0.7s 3.55s ease both;
}
.cta-primary {
  font-size: 20px;
  color: #fff;
  font-weight: 600;
  padding: 14px 35px;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  background: linear-gradient(90deg, #6366f1 0%, #06b6d4 100%);
  animation: border-pulse 3s ease-in-out infinite;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.cta-primary:hover { opacity: 0.9; }
.cta-secondary {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 500;
  padding: 14px 35px;
  border-radius: 9999px;
  cursor: pointer;
  color: rgba(255,255,255,0.8);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  transition: background 0.2s;
  white-space: nowrap;
}
.cta-secondary:hover { background: rgba(255,255,255,0.1); }
.cta-secondary svg { fill: currentColor; }
.feature-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 58px;
  opacity: 0;
  animation: slide-up 0.7s 3.7s ease both;
}
.feature-pills .fp-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 500;
  padding: 9px 20px 9px 16px;
  border-radius: 9999px;
  color: rgba(255, 255, 255, 0.72);
  cursor: default;
  position: relative;
  background:
    linear-gradient(rgba(13, 18, 48, 0.5), rgba(13, 18, 48, 0.5)) padding-box,
    linear-gradient(120deg, rgba(99, 102, 241, 0.55), rgba(6, 182, 212, 0.55)) border-box;
  border: 1.5px solid transparent;
  background-size: 100% 100%, 220% 100%;
  background-position: 0 0, 0% 0;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  will-change: background-position;
  transition: background-position 0.5s ease, color 0.25s ease;
}
.feature-pills .fp-item:hover {
  color: rgba(255, 255, 255, 0.95);
  background-position: 0 0, 100% 0;
}
.feature-pills .fp-icon {
  display: inline-flex;
  width: 18px;
  height: 18px;
  color: #818cf8;
  transition: transform 0.3s ease, color 0.25s ease;
}
.feature-pills .fp-icon svg { width: 100%; height: 100%; }
.feature-pills .fp-item:hover .fp-icon {
  transform: scale(1.18);
  color: #22d3ee;
}
.social-proof {
  display: flex;
  align-items: center;
  gap: 17px;
  opacity: 0;
  animation: slide-up 0.7s 3.85s ease both;
}
.avatars { display: flex; }
.avatars .avatar {
  width: 41px;
  height: 41px;
  border-radius: 50%;
  border: 2px solid #0a0d1a;
  object-fit: cover;
  margin-left: -12px;
  transition: transform 0.25s ease;
}
.avatars .avatar:hover {
  transform: translateY(-3px);
  border-color: rgba(129, 140, 248, 0.6);
}
.avatars .avatar:first-child { margin-left: 0; }
.social-info { display: flex; flex-direction: column; gap: 2px; }
.stars { display: flex; gap: 2px; }
.stars span { font-size: 17px; color: #facc15; }
.social-info .user-count {
  font-size: 17px;
  color: rgba(255,255,255,0.45);
}
.social-info .user-count strong {
  color: rgba(255,255,255,0.7);
  font-weight: 600;
}

/* ── Planets ── */
.planet-yellow {
  position: absolute;
  bottom: 40px;
  right: 64px;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffe066, #f59e0b, #b45309);
  box-shadow: 0 0 30px 6px rgba(245,158,11,0.4);
  opacity: 0;
  animation: planet-in 0.8s 0.6s ease both, float-y 5s 1.4s ease-in-out infinite;
}
.planet-cyan {
  position: absolute;
  bottom: 132px;
  right: 32px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #a5f3fc, #06b6d4, #0e7490);
  box-shadow: 0 0 18px 4px rgba(6,182,212,0.5);
  opacity: 0;
  animation: planet-in 0.8s 1s ease both, float-y 4s 1.8s ease-in-out infinite;
}

/* ── Bird ── */
.bird-character {
  position: absolute;
  bottom: 48px;
  left: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  user-select: none;
  opacity: 0;
  will-change: transform, opacity;
  animation: bird-in 1s 0.4s ease both, float-bird 3.5s 1.4s ease-in-out infinite;
}
.bird-character img {
  width: 96px;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 16px rgba(99,102,241,0.7)) drop-shadow(0 0 6px rgba(6,182,212,0.5));
}

/* ── Sections ── */
.sections-wrap {
  position: relative;
  z-index: 10;
  background: transparent;
}
.func-section {
  padding: 80px 24px 60px;
  padding-top: calc(80px + 76px);
  max-width: none;
  margin: 0 auto;
}
.func-section + .func-section {
  border-top: 1px solid rgba(255,255,255,0.06);
}
#sec-features {
  border-top: none !important;
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}
#sec-features > .features-hero-title,
#sec-features > .scene-row {
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
#sec-product,
#sec-audience,
#sec-pricing {
  max-width: none;
  padding-left: 0;
  padding-right: 0;
  border-top: none !important;
}
#sec-product > .features-hero-title,
#sec-audience > .features-hero-title {
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}
.section-num {
  font-size: 13px;
  font-weight: 700;
  color: #818cf8;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.section-title {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
}
@media (min-width: 768px) {
  .section-title { font-size: 34px; }
}
.section-title .accent {
  background: linear-gradient(90deg, #818cf8, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── 01 功能场景 ── */
#sec-features {
  position: relative;
  overflow: hidden;
}
#sec-features::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(99,102,241,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.1) 1px, transparent 1px),
    radial-gradient(ellipse 50% 40% at 20% 30%, rgba(99,102,241,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 45% 35% at 80% 50%, rgba(6,182,212,0.14) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 50% 80%, rgba(129,140,248,0.1) 0%, transparent 60%),
    radial-gradient(ellipse 35% 30% at 65% 20%, rgba(139,92,246,0.12) 0%, transparent 60%);
  background-size: 48px 48px, 48px 48px, 100% 100%, 100% 100%, 100% 100%, 100% 100%;
  pointer-events: none;
  z-index: 0;
}
#sec-features::after {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 1400px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(99,102,241,0.2) 0%, rgba(6,182,212,0.1) 30%, transparent 60%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
#sec-features > *:not(.sec-features-stars):not(.scene-bg-fx),
.func-section > *:not(.scene-bg-fx):not(.sec-features-stars) {
  position: relative;
  z-index: 1;
}
.sec-features-stars {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.sec-features-stars .sec-star {
  position: absolute;
  border-radius: 50%;
}
.sec-features-stars .sec-star.sec-star-cyan {
  background: #22d3ee;
  box-shadow: 0 0 8px rgba(34,211,238,1), 0 0 20px rgba(34,211,238,0.6), 0 0 40px rgba(34,211,238,0.2);
}
.sec-features-stars .sec-star.sec-star-indigo {
  background: #a5b4fc;
  box-shadow: 0 0 8px rgba(165,180,252,1), 0 0 20px rgba(165,180,252,0.6), 0 0 40px rgba(165,180,252,0.2);
}
.sec-features-stars .sec-star.sec-star-purple {
  background: #c4b5fd;
  box-shadow: 0 0 8px rgba(196,181,253,1), 0 0 20px rgba(196,181,253,0.6), 0 0 40px rgba(196,181,253,0.2);
}
.sec-features-stars .sec-star.sec-star-white {
  background: rgba(255,255,255,0.95);
  box-shadow: 0 0 6px rgba(255,255,255,0.8), 0 0 16px rgba(129,140,248,0.5), 0 0 30px rgba(6,182,212,0.2);
}
@keyframes sec-twinkle {
  0%, 100% { opacity: var(--base-op, 0.6); transform: scale(1); }
  50% { opacity: 0.15; transform: scale(0.4); }
}
@keyframes sec-drift {
  0%, 100% { transform: translateY(0) translateX(0); }
  25% { transform: translateY(-8px) translateX(4px); }
  50% { transform: translateY(-4px) translateX(-6px); }
  75% { transform: translateY(6px) translateX(2px); }
}

.scene-bg-fx {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.bg-orb {
  position: absolute;
  border-radius: 50%;
  will-change: transform;
}
.bg-orb-1 {
  width: 500px;
  height: 500px;
  top: -10%;
  left: -8%;
  background: radial-gradient(circle, rgba(99,102,241,0.45) 0%, rgba(99,102,241,0.15) 40%, transparent 70%);
  filter: blur(20px);
  animation: orb-drift-1 18s ease-in-out infinite;
}
.bg-orb-2 {
  width: 400px;
  height: 400px;
  top: 40%;
  right: -5%;
  background: radial-gradient(circle, rgba(6,182,212,0.4) 0%, rgba(6,182,212,0.12) 40%, transparent 70%);
  filter: blur(20px);
  animation: orb-drift-2 20s 3s ease-in-out infinite;
}
.bg-orb-3 {
  width: 350px;
  height: 350px;
  bottom: -5%;
  left: 30%;
  background: radial-gradient(circle, rgba(139,92,246,0.38) 0%, rgba(139,92,246,0.1) 40%, transparent 70%);
  filter: blur(18px);
  animation: orb-drift-3 16s 6s ease-in-out infinite;
}
@keyframes orb-drift-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(80px, 40px) scale(1.15); }
  66% { transform: translate(-30px, 60px) scale(0.9); }
}
@keyframes orb-drift-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-60px, -30px) scale(1.1); }
  66% { transform: translate(40px, -50px) scale(0.95); }
}
@keyframes orb-drift-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(50px, -40px) scale(1.12); }
  66% { transform: translate(-40px, 20px) scale(0.92); }
}

.bg-mesh {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.06) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
  animation: mesh-pulse 8s ease-in-out infinite;
}
@keyframes mesh-pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}


.features-hero-title {
  font-size: 36px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 64px;
  margin-top: 4px;
  padding: 20px 40px;
  border-radius: 20px;
  border: 1px solid rgba(99,102,241,0.25);
  background: linear-gradient(135deg, rgba(99,102,241,0.12) 0%, rgba(6,182,212,0.08) 50%, rgba(139,92,246,0.12) 100%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 0 40px rgba(99,102,241,0.15),
    0 0 80px rgba(6,182,212,0.08),
    inset 0 1px 0 rgba(255,255,255,0.08);
  color: #fff;
  -webkit-text-fill-color: unset;
  background-clip: unset;
  -webkit-background-clip: unset;
  animation: title-glow 4s ease-in-out infinite, title-border-flow 6s linear infinite;
  position: relative;
  overflow: hidden;
  min-height: 1.15em;   /* 打字机清空文字时保持容器高度不塌陷 */
}

/* 打字机光标闪烁 */
@keyframes tw-cursor-blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0; }
}
.typewriter-cursor {
  transition: opacity 0.4s ease;
}
.features-hero-title::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 20px;
  padding: 1px;
  background: linear-gradient(90deg, rgba(99,102,241,0.6), rgba(6,182,212,0.4), rgba(139,92,246,0.6), rgba(99,102,241,0.6));
  background-size: 300% 100%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: title-border-flow 6s linear infinite;
  pointer-events: none;
}
.features-hero-title::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg, transparent, rgba(99,102,241,0.08), transparent, rgba(6,182,212,0.06), transparent);
  animation: title-spin 12s linear infinite;
  pointer-events: none;
}
@keyframes title-glow {
  0%, 100% { box-shadow: 0 0 40px rgba(99,102,241,0.15), 0 0 80px rgba(6,182,212,0.08), inset 0 1px 0 rgba(255,255,255,0.08); }
  50% { box-shadow: 0 0 60px rgba(99,102,241,0.3), 0 0 120px rgba(6,182,212,0.15), inset 0 1px 0 rgba(255,255,255,0.12); }
}
@keyframes title-border-flow {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}
@keyframes title-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@media (min-width: 768px) { .features-hero-title { font-size: 48px; } }
@media (min-width: 1024px) { .features-hero-title { font-size: 30px; } }
.features-hero-title .gradient-text {
  background: linear-gradient(90deg, #06b6d4, #6366f1, #818cf8, #06b6d4);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 4s linear infinite;
}

.scene-row {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-bottom: 64px;
}
@media (min-width: 768px) {
  .scene-row {
    flex-direction: row;
    align-items: center;
    gap: 48px;
  }
  .scene-demo {
    align-self: center;
    padding-top: 60px;
  }
}
.scene-text {
  flex: 0 0 46%;
  max-width: 46%;
  padding: 28px 32px;
  border-radius: 20px;
  background: rgba(99,102,241,0.06);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(129,140,248,0.12);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.05);
}
@media (max-width: 767px) {
  .scene-text { max-width: 100%; flex: none; }
}
.scene-heading {
  font-size: 36px;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
  line-height: 1.2;
}
@media (min-width: 768px) { .scene-heading { font-size: 26px; } }
.scene-dot {
  color: rgba(255,255,255,0.3);
  margin: 0 4px;
}
.scene-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.scene-list li {
  font-size: 24px;
  line-height: 1.6;
  color: rgba(255,255,255,0.6);
  padding-left: 20px;
  position: relative;
}
@media (min-width: 768px) { .scene-list li { font-size: 16px; } }
.scene-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, #818cf8, #06b6d4);
}
@media (min-width: 768px) {
  .scene-list li::before { top: 12px; width: 6px; height: 6px; }
}
.scene-demo {
  flex: 1;
  min-height: 680px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;  position: relative;
  border-radius: 28px;
  /* 蒙版：径向渐变光晕 + 半透明底色，让演示区从背景中独立出来 */
  background:
    radial-gradient(ellipse 70% 60% at 50% 40%, rgba(99,102,241,0.10) 0%, rgba(6,182,212,0.05) 50%, transparent 80%),
    rgba(15,16,30,0.35);
  border: 1px solid rgba(129,140,248,0.14);
  box-shadow: 0 12px 48px rgba(0,0,0,0.28), inset 0 1px 0 rgba(255,255,255,0.04);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

/* 移动端：设备模型已缩小，降低最小高度避免大片空白 */
@media (max-width: 768px) {
  .scene-demo { min-height: 0; }
}

/* ── Capsule Tabs ── */
.capsule-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}
.capsule-tab {
  font-size: 13px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 9999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: rgba(255,255,255,0.55);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  user-select: none;
}
.capsule-tab:hover {
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.8);
  border-color: rgba(255,255,255,0.2);
}
.capsule-tab.tab-active {
  background: linear-gradient(90deg, rgba(99,102,241,0.25) 0%, rgba(6,182,212,0.2) 100%);
  border-color: rgba(99,102,241,0.5);
  color: #fff;
  box-shadow: 0 0 12px rgba(99,102,241,0.2);
}

/* ── Tab Content ── */
.tab-panels {
  position: relative;
  min-height: 200px;
}
.tab-panel {
  display: none;
  animation: fade-in 0.35s ease;
}
.tab-panel.panel-active {
  display: block;
}
.panel-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
}
@media (min-width: 768px) {
  .panel-card {
    flex-direction: row;
    align-items: flex-start;
  }
}
.panel-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}
.panel-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.panel-body p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
}

/* ── QR Modal ── */
.qr-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
.qr-overlay.active {
  opacity: 1;
  visibility: visible;
}
.qr-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 48px 36px;
  border-radius: 24px;
  background: linear-gradient(160deg, rgba(13, 18, 48, 0.95) 0%, rgba(7, 11, 24, 0.98) 100%);
  border: 1px solid rgba(99, 102, 241, 0.25);
  box-shadow: 0 0 60px rgba(99, 102, 241, 0.15), 0 0 120px rgba(6, 182, 212, 0.08), 0 24px 48px rgba(0, 0, 0, 0.5);
  transform: translateY(20px) scale(0.95);
  transition: transform 0.35s ease;
  max-width: 90vw;
}
.qr-overlay.active .qr-card {
  transform: translateY(0) scale(1);
}
.qr-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.6);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  line-height: 1;
}
.qr-close:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
}
.qr-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  object-fit: contain;
  filter: drop-shadow(0 0 12px rgba(99,102,241,0.5));
}
.qr-title {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.qr-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 24px;
  text-align: center;
  line-height: 1.5;
}
.qr-image-wrap {
  position: relative;
  padding: 16px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.2);
  margin-bottom: 20px;
}
.qr-image-wrap img {
  display: block;
  width: 200px;
  height: 200px;
  object-fit: contain;
  border-radius: 4px;
}
.qr-hint {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  display: flex;
  align-items: center;
  gap: 6px;
}

#sec-product > .product-grid {
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
#sec-product .product-card {
  border-radius: 20px;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}
#sec-product .product-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 20px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(129,140,248,0.55), rgba(34,211,238,0.35), rgba(129,140,248,0.55));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.5;
  transition: opacity 0.35s ease;
  z-index: 2;
}
#sec-product .product-card::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -75%;
  width: 50%;
  height: 200%;
  background: linear-gradient(115deg, transparent 0%, rgba(167,181,255,0.12) 45%, rgba(34,211,238,0.12) 55%, transparent 100%);
  transform: skewX(-18deg);
  pointer-events: none;
  z-index: 1;
  animation: ggk-card-sheen 6s ease-in-out infinite;
}
@keyframes ggk-card-sheen {
  0%, 60% { left: -75%; }
  85%, 100% { left: 150%; }
}
#sec-product .product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(129,140,248,0.25);
  box-shadow: 0 16px 48px rgba(0,0,0,0.35), 0 0 28px rgba(99,102,241,0.18);
}
#sec-product .product-card:hover::before {
  opacity: 1;
}
#sec-product .product-card:hover::after {
  animation-duration: 1.5s;
}
#sec-product .product-card-header {
  padding: 24px 24px 16px;
}
#sec-product .product-card-title {
  font-size: 21px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(129,140,248,0.18);
  position: relative;
}
#sec-product .product-card-title::before {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 36px;
  height: 2px;
  background: linear-gradient(90deg, #818cf8, #22d3ee);
  border-radius: 2px;
}
#sec-product .product-card-summary {
  font-size: 13px;
  line-height: 2.1;
  color: rgba(167,181,255,0.88);
  margin-bottom: 10px;
  letter-spacing: 0.06em;
  font-weight: 500;
}
#sec-product .product-card-visual {
  min-height: 200px;
  background: linear-gradient(135deg, rgba(99,102,241,0.08) 0%, rgba(6,182,212,0.06) 100%);
  border-top: 1px solid rgba(255,255,255,0.04);
  position: relative;
  overflow: hidden;
}

#sec-product .product-grid-collapsed {
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.6s cubic-bezier(0.4,0,0.2,1);
}
#sec-product .product-grid-collapsed.expanded {
  max-height: 800px;
}
#sec-product .product-expand-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 32px auto 0;
  padding: 12px 32px;
  border-radius: 9999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}
#sec-product .product-expand-btn:hover {
  background: rgba(99,102,241,0.15);
  border-color: rgba(99,102,241,0.3);
  color: #fff;
}
#sec-product .product-expand-btn svg {
  transition: transform 0.3s ease;
}
#sec-product .product-expand-btn.expanded svg {
  transform: rotate(180deg);
}
.qr-hint svg { flex-shrink: 0; }

#sec-product .product-card-visual > [class^="pv-"] {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

/* ── 卡片1：微信扫码 ── */
#sec-product .pv-scan-demo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 20px 16px;
  background: linear-gradient(135deg, rgba(7,191,96,0.06) 0%, rgba(15,23,42,0.6) 40%, rgba(99,102,241,0.06) 100%);
}
#sec-product .pv-phone-mini {
  width: 72px;
  height: 130px;
  border-radius: 14px;
  background: linear-gradient(145deg, #3a3a3c, #1c1c1e);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 14px;
  flex-shrink: 0;
}
#sec-product .pv-phone-notch {
  width: 28px;
  height: 8px;
  background: #000;
  border-radius: 10px;
  margin-bottom: 8px;
}
#sec-product .pv-phone-screen {
  width: 58px;
  height: 90px;
  border-radius: 8px;
  background: linear-gradient(160deg, #c8c0f0, #a8d8f8, #b0e8e0);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
#sec-product .pv-phone-welcome-icon { display: flex; justify-content: center; }
#sec-product .pv-phone-welcome-text { font-size: 8px; font-weight: 700; color: #1f2937; }
#sec-product .pv-phone-welcome-sub { font-size: 6px; color: #6b7280; }
#sec-product .pv-scan-beam {
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, #07C160, #22d3ee);
  border-radius: 2px;
  position: relative;
  box-shadow: 0 0 8px rgba(7,191,96,0.5);
  animation: pv-beam-pulse 2s ease-in-out infinite;
}
#sec-product .pv-scan-beam::before,
#sec-product .pv-scan-beam::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  transform: translateY(-50%);
}
#sec-product .pv-scan-beam::before { left: -3px; background: #07C160; box-shadow: 0 0 6px rgba(7,191,96,0.8); }
#sec-product .pv-scan-beam::after { right: -3px; background: #22d3ee; box-shadow: 0 0 6px rgba(34,211,238,0.8); }
@keyframes pv-beam-pulse {
  0%, 100% { opacity: 0.6; width: 28px; }
  50% { opacity: 1; width: 36px; }
}
#sec-product .pv-qr-code {
  width: 64px;
  height: 64px;
  background: rgba(255,255,255,0.95);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  flex-shrink: 0;
}
#sec-product .pv-wechat-hint {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 9px;
  color: #07C160;
  opacity: 0.7;
}

/* ── 卡片2：不连终端 AI 助手 ── */
#sec-product .pv-chat-demo {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
  background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(99,102,241,0.08) 100%);
}
#sec-product .pv-chat-phone {
  width: 180px;
  border-radius: 16px;
  background: #f2f0ec;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
#sec-product .pv-chat-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px 2px;
  font-size: 9px;
  font-weight: 600;
  color: #1c1c1e;
}
#sec-product .pv-ai-mode-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 4px 10px;
  margin: 4px 12px;
  border-radius: 9999px;
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.2);
  font-size: 8px;
  color: #818cf8;
  font-weight: 600;
}
#sec-product .pv-chat-messages { padding: 8px 10px; display: flex; flex-direction: column; gap: 8px; }
#sec-product .pv-chat-user-bubble {
  align-self: flex-end;
  background: rgba(210,205,240,0.55);
  border-radius: 12px 12px 4px 12px;
  padding: 6px 10px;
  font-size: 9px;
  color: #1f2937;
  max-width: 80%;
  line-height: 1.4;
}
#sec-product .pv-chat-ai-bubble { display: flex; gap: 6px; align-items: flex-start; }
#sec-product .pv-chat-ai-avatar { flex-shrink: 0; margin-top: 2px; }
#sec-product .pv-chat-ai-text {
  background: rgba(255,255,255,0.7);
  border-radius: 12px 12px 12px 4px;
  padding: 6px 10px;
  font-size: 9px;
  color: #1f2937;
  line-height: 1.4;
  max-width: 85%;
}
#sec-product .pv-chat-input-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px 8px;
  border-top: 1px solid rgba(0,0,0,0.06);
}
#sec-product .pv-chat-input {
  flex: 1;
  padding: 5px 8px;
  border-radius: 10px;
  background: rgba(255,255,255,0.8);
  font-size: 8px;
  color: #9ca3af;
}
#sec-product .pv-chat-send-btn {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: center;
}
#sec-product .pv-quick-actions-mini { display: flex; gap: 6px; }
#sec-product .pv-quick-tag {
  padding: 4px 10px;
  border-radius: 9999px;
  background: rgba(99,102,241,0.12);
  border: 1px solid rgba(99,102,241,0.2);
  font-size: 8px;
  color: rgba(255,255,255,0.6);
}

/* ── 卡片3：接上终端操控台 ── */
#sec-product .pv-control-demo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 16px 12px;
  background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(6,182,212,0.06) 100%);
}
#sec-product .pv-ctrl-phone {
  width: 120px;
  border-radius: 12px;
  background: #f2f0ec;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  overflow: hidden;
  flex-shrink: 0;
}
#sec-product .pv-ctrl-phone-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 8px;
  border-bottom: 1px solid #f3f4f6;
  font-size: 9px;
  font-weight: 600;
  color: #1f2937;
}
#sec-product .pv-ctrl-online { display: flex; align-items: center; gap: 3px; font-size: 7px; color: #6b7280; }
#sec-product .pv-ctrl-online-dot { width: 5px; height: 5px; border-radius: 50%; background: #22c55e; }
#sec-product .pv-ctrl-phone-msgs { padding: 8px; display: flex; flex-direction: column; gap: 6px; }
#sec-product .pv-ctrl-user-cmd {
  align-self: flex-end;
  background: #f0f0f0;
  border-radius: 10px 10px 4px 10px;
  padding: 5px 8px;
  font-size: 8px;
  color: #1f2937;
  max-width: 85%;
}
#sec-product .pv-ctrl-ai-reply { display: flex; gap: 4px; align-items: center; font-size: 8px; color: #6b7280; }
#sec-product .pv-ctrl-link { flex-shrink: 0; animation: pv-link-pulse 2s ease-in-out infinite; }
@keyframes pv-link-pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}
#sec-product .pv-ctrl-terminal {
  width: 140px;
  border-radius: 8px;
  background: #1e1e1e;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  overflow: hidden;
  flex-shrink: 0;
}
#sec-product .pv-ctrl-term-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  background: #2d2d2d;
  font-size: 8px;
  color: #ccc;
}
#sec-product .pv-ctrl-term-dots { display: flex; gap: 4px; }
#sec-product .pv-ctrl-term-dots i { width: 7px; height: 7px; border-radius: 50%; display: block; }
#sec-product .pv-ctrl-term-body {
  padding: 8px;
  font-family: 'Menlo','Monaco','Courier New',monospace;
  font-size: 8px;
  line-height: 1.6;
  color: #d4d4d4;
}
#sec-product .pv-ctrl-term-line { margin-bottom: 2px; }
#sec-product .pv-ctrl-prompt { color: #818cf8; margin-right: 4px; }
#sec-product .pv-ctrl-term-output { color: rgba(255,255,255,0.4); font-size: 7px; }
#sec-product .pv-ctrl-cursor { color: #22d3ee; animation: pv-blink 1s step-end infinite; }
@keyframes pv-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ── 卡片4：exe 一键安装 ── */
#sec-product .pv-install-demo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(99,102,241,0.08) 100%);
}
#sec-product .pv-install-window {
  width: 100%;
  max-width: 280px;
  border-radius: 8px;
  background: #1e1e2e;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  overflow: hidden;
}
#sec-product .pv-install-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  background: #2d2d3d;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
#sec-product .pv-install-title-icon { display: flex; }
#sec-product .pv-install-title-text { flex: 1; font-size: 10px; color: rgba(255,255,255,0.6); }
#sec-product .pv-install-win-btns { display: flex; gap: 2px; }
#sec-product .pv-win-btn {
  width: 20px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
  color: rgba(255,255,255,0.5);
  border-radius: 2px;
}
#sec-product .pv-win-close { background: #e81123; color: #fff; }
#sec-product .pv-install-body { padding: 16px; display: flex; flex-direction: column; gap: 14px; }
#sec-product .pv-install-brand { display: flex; align-items: center; gap: 10px; }
#sec-product .pv-install-brand-text { display: flex; flex-direction: column; gap: 2px; }
#sec-product .pv-install-brand-name { font-size: 13px; font-weight: 700; color: #fff; }
#sec-product .pv-install-brand-ver { font-size: 9px; color: rgba(255,255,255,0.4); }
#sec-product .pv-install-progress-wrap { display: flex; flex-direction: column; gap: 6px; }
#sec-product .pv-install-progress-label { display: flex; justify-content: space-between; font-size: 9px; color: rgba(255,255,255,0.6); }
#sec-product .pv-install-progress-bar { height: 6px; border-radius: 3px; background: rgba(255,255,255,0.08); overflow: hidden; }
#sec-product .pv-install-progress-fill {
  width: 87%;
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, #6366f1, #22d3ee);
  box-shadow: 0 0 8px rgba(99,102,241,0.4);
  animation: pv-progress-glow 2s ease-in-out infinite;
}
@keyframes pv-progress-glow {
  0%, 100% { box-shadow: 0 0 8px rgba(99,102,241,0.4); }
  50% { box-shadow: 0 0 16px rgba(99,102,241,0.7); }
}
#sec-product .pv-install-path {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 8px;
  color: rgba(255,255,255,0.35);
  font-family: 'Menlo','Monaco','Courier New',monospace;
}

/* ── 卡片5：四模五权 ── */
#sec-product .pv-config-demo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(99,102,241,0.06) 100%);
}
#sec-product .pv-config-panel { width: 100%; max-width: 260px; display: flex; flex-direction: column; gap: 8px; }
#sec-product .pv-config-group {
  background: rgba(255,255,255,0.04);
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.06);
  overflow: hidden;
}
#sec-product .pv-config-group-label {
  padding: 8px 12px 4px;
  font-size: 9px;
  font-weight: 500;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
#sec-product .pv-config-option { display: flex; align-items: center; gap: 10px; padding: 7px 12px; transition: background 0.15s; }
#sec-product .pv-config-option:hover { background: rgba(255,255,255,0.03); }
#sec-product .pv-config-radio {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color 0.15s;
}
#sec-product .pv-config-radio-dot { width: 7px; height: 7px; border-radius: 50%; background: #818cf8; display: none; }
#sec-product .pv-config-selected .pv-config-radio { border-color: #818cf8; }
#sec-product .pv-config-selected .pv-config-radio-dot { display: block; }
#sec-product .pv-config-option-text { font-size: 10px; color: rgba(255,255,255,0.5); transition: color 0.15s; }
#sec-product .pv-config-selected .pv-config-option-text { color: #818cf8; font-weight: 600; }
#sec-product .pv-config-divider { margin-left: 36px; height: 1px; background: rgba(255,255,255,0.04); }

/* ── 卡片6：运行状态 ── */
#sec-product .pv-status-demo {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(6,182,212,0.06) 100%);
}
#sec-product .pv-status-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
#sec-product .pv-status-card { border-radius: 8px; padding: 8px 4px; text-align: center; }
#sec-product .pv-status-waiting { background: rgba(249,115,22,0.12); }
#sec-product .pv-status-running { background: rgba(74,222,128,0.12); }
#sec-product .pv-status-idle { background: rgba(37,99,235,0.12); }
#sec-product .pv-status-error { background: rgba(239,68,68,0.12); }
#sec-product .pv-status-count { font-size: 16px; font-weight: 700; }
#sec-product .pv-status-waiting .pv-status-count { color: #f97316; }
#sec-product .pv-status-running .pv-status-count { color: #4ade80; }
#sec-product .pv-status-idle .pv-status-count { color: #3b82f6; }
#sec-product .pv-status-error .pv-status-count { color: #ef4444; }
#sec-product .pv-status-label { font-size: 7px; margin-top: 2px; }
#sec-product .pv-status-waiting .pv-status-label { color: rgba(249,115,22,0.7); }
#sec-product .pv-status-running .pv-status-label { color: rgba(74,222,128,0.7); }
#sec-product .pv-status-idle .pv-status-label { color: rgba(37,99,235,0.7); }
#sec-product .pv-status-error .pv-status-label { color: rgba(239,68,68,0.7); }
#sec-product .pv-desktop-info {
  background: rgba(255,255,255,0.04);
  border-radius: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,0.06);
}
#sec-product .pv-desktop-info-header { display: flex; align-items: center; gap: 6px; font-size: 9px; color: rgba(255,255,255,0.6); font-weight: 600; }
#sec-product .pv-desktop-badge {
  margin-left: auto;
  background: #059669;
  color: #fff;
  font-size: 7px;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: 9999px;
}
#sec-product .pv-exec-steps { display: flex; flex-direction: column; gap: 6px; }
#sec-product .pv-exec-step {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 9px;
  font-family: 'Menlo','Monaco','Courier New',monospace;
}
#sec-product .pv-exec-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
#sec-product .pv-exec-dot-done { background: #4ade80; }
#sec-product .pv-exec-dot-active { background: #f97316; animation: pv-dot-pulse 1.5s ease-in-out infinite; }
#sec-product .pv-exec-dot-pending { background: rgba(255,255,255,0.2); }
@keyframes pv-dot-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
#sec-product .pv-exec-text { color: rgba(255,255,255,0.6); flex: 1; }
#sec-product .pv-exec-time { color: rgba(255,255,255,0.3); font-size: 8px; }

/* ── 卡片7：报告生成 ── */
#sec-product .pv-report-demo {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(139,92,246,0.06) 100%);
}
#sec-product .pv-report-header { display: flex; align-items: center; gap: 8px; }
#sec-product .pv-report-title { font-size: 11px; font-weight: 700; color: #fff; }
#sec-product .pv-report-data { display: flex; flex-direction: column; gap: 4px; }
#sec-product .pv-report-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(255,255,255,0.03);
  font-size: 9px;
  color: rgba(255,255,255,0.5);
}
#sec-product .pv-report-val { color: #818cf8; font-weight: 600; font-family: 'Menlo','Monaco','Courier New',monospace; }
#sec-product .pv-chart-bar { flex: 1; display: flex; align-items: flex-end; gap: 6px; padding: 8px 4px 0; min-height: 60px; }
#sec-product .pv-chart-bar-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; height: 100%; justify-content: flex-end; }
#sec-product .pv-chart-bar-fill {
  width: 100%;
  border-radius: 4px 4px 2px 2px;
  background: linear-gradient(180deg, #818cf8, #6366f1, #4f46e5);
  box-shadow: 0 0 8px rgba(99,102,241,0.3);
  min-height: 8px;
  transition: height 0.3s ease;
}
#sec-product .pv-chart-bar-label { font-size: 7px; color: rgba(255,255,255,0.3); }

/* ── 卡片8：深谙芯片 ── */
#sec-product .pv-chip-demo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(34,211,238,0.06) 100%);
}
#sec-product .pv-chip-icon-area { display: flex; justify-content: center; filter: drop-shadow(0 0 8px rgba(99,102,241,0.3)); }
#sec-product .pv-chip-qa { width: 100%; display: flex; flex-direction: column; gap: 6px; }
#sec-product .pv-chip-question {
  align-self: flex-end;
  background: rgba(99,102,241,0.15);
  border-radius: 10px 10px 4px 10px;
  padding: 6px 10px;
  font-size: 9px;
  color: rgba(255,255,255,0.8);
  max-width: 80%;
  border: 1px solid rgba(99,102,241,0.2);
}
#sec-product .pv-chip-answer { display: flex; flex-direction: column; gap: 4px; }
#sec-product .pv-chip-answer-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 9px;
  color: #22d3ee;
  font-family: 'Menlo','Monaco','Courier New',monospace;
  font-weight: 600;
}
#sec-product .pv-chip-table { width: 100%; border-radius: 8px; overflow: hidden; border: 1px solid rgba(255,255,255,0.06); }
#sec-product .pv-chip-table-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 4px;
  padding: 5px 8px;
  font-size: 8px;
  font-family: 'Menlo','Monaco','Courier New',monospace;
  color: rgba(255,255,255,0.5);
}
#sec-product .pv-chip-table-header { background: rgba(99,102,241,0.1); color: rgba(255,255,255,0.7); font-weight: 600; }
#sec-product .pv-chip-table-row:nth-child(even) { background: rgba(255,255,255,0.02); }

/* ── 卡片9：token 用量 ── */
#sec-product .pv-token-demo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(99,102,241,0.06) 100%);
}
#sec-product .pv-token-ring-area { position: relative; display: flex; align-items: center; justify-content: center; }
#sec-product .pv-token-ring { filter: drop-shadow(0 0 8px rgba(99,102,241,0.3)); }
#sec-product .pv-token-ring-center { position: absolute; display: flex; flex-direction: column; align-items: center; gap: 2px; }
#sec-product .pv-token-percent { font-size: 18px; font-weight: 800; color: #fff; line-height: 1; }
#sec-product .pv-token-used-label { font-size: 8px; color: rgba(255,255,255,0.4); }
#sec-product .pv-token-stats { display: flex; align-items: center; gap: 12px; }
#sec-product .pv-token-stat { display: flex; flex-direction: column; align-items: center; gap: 2px; }
#sec-product .pv-token-stat-label { font-size: 8px; color: rgba(255,255,255,0.35); }
#sec-product .pv-token-stat-value {
  font-size: 12px;
  font-weight: 700;
  color: rgba(255,255,255,0.8);
  font-family: 'Menlo','Monaco','Courier New',monospace;
}
#sec-product .pv-token-stat-remain { color: #4ade80; }
#sec-product .pv-token-stat-divider { width: 1px; height: 20px; background: rgba(255,255,255,0.08); }
#sec-product .pv-token-detail {
  width: 100%;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,0.06);
}
#sec-product .pv-token-detail-row { display: flex; flex-direction: column; gap: 4px; }
#sec-product .pv-token-detail-label { font-size: 8px; color: rgba(255,255,255,0.4); }
#sec-product .pv-token-detail-bar { display: flex; gap: 4px; }
#sec-product .pv-token-detail-input {
  flex: 1;
  padding: 4px 8px;
  border-radius: 4px;
  background: rgba(99,102,241,0.15);
  font-size: 8px;
  color: #818cf8;
  text-align: center;
  font-family: 'Menlo','Monaco','Courier New',monospace;
}
#sec-product .pv-token-detail-output {
  flex: 1;
  padding: 4px 8px;
  border-radius: 4px;
  background: rgba(34,211,238,0.15);
  font-size: 8px;
  color: #22d3ee;
  text-align: center;
  font-family: 'Menlo','Monaco','Courier New',monospace;
}

@media (min-width: 768px) {
  #sec-product > .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  #sec-product .product-grid-collapsed {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  #sec-product > .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  #sec-product .product-grid-collapsed {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 767px) {
  #sec-product .product-card {
    border-radius: 16px;
  }
  #sec-product .product-card-header {
    padding: 20px 20px 12px;
  }
  #sec-product .product-card-title {
    font-size: 18px;
  }
  #sec-product .product-card-summary {
    font-size: 12px;
    line-height: 1.9;
  }
  #sec-product .product-card-visual {
    min-height: 140px;
  }
}

#sec-audience .ggk-marquee-stage {
  position: relative;
  width: 100%;
  padding: 20px 0;
  overflow: hidden;
  background: transparent;
  display: flex;
  flex-direction: column;
  gap: 24px;
  mask-image: linear-gradient(to right, transparent, #000 15%, #000 85%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 15%, #000 85%, transparent);
}

#sec-audience .ggk-marquee-stage:hover .ggk-marquee-track {
  animation-play-state: paused;
}

#sec-audience .ggk-marquee-track {
  display: flex;
  width: max-content;
  gap: 24px;
}

#sec-audience .ggk-marquee-track.to-left {
  animation: ggk-flow-left 35s linear infinite;
}

#sec-audience .ggk-marquee-track.to-right {
  animation: ggk-flow-right 35s linear infinite;
}

#sec-audience .ggk-user-card {
  width: 380px;
  background: rgba(32, 39, 57, 0.4);
  border: 1px solid rgba(236, 234, 242, 0.08);
  border-radius: 16px;
  padding: 24px 24px 29px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#sec-audience .ggk-user-card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: rgba(124, 92, 240, 0.45);
  box-shadow: 0 20px 40px rgba(10, 14, 22, 0.5);
  background: rgba(32, 39, 57, 0.6);
}

#sec-audience .ggk-user-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

#sec-audience .ggk-user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

#sec-audience .ggk-user-info {
  display: flex;
  flex-direction: column;
}

#sec-audience .ggk-user-id {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
}

#sec-audience .ggk-user-role {
  font-size: 15px;
  color: #5FCFB6;
  background: rgba(95, 207, 182, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  align-self: flex-start;
  margin-top: 2px;
  font-weight: 500;
}

#sec-audience .ggk-user-card:nth-child(even) .ggk-user-role {
  color: #C9C0F4;
  background: rgba(124, 92, 240, 0.1);
}

#sec-audience .ggk-user-comment {
  font-size: 17.5px;
  line-height: 1.6;
  color: #9AA1B2;
  margin: 0;
  flex-grow: 1;
}

@keyframes ggk-flow-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - 12px)); }
}

@keyframes ggk-flow-right {
  0% { transform: translateX(calc(-50% - 12px)); }
  100% { transform: translateX(0); }
}

@media (max-width: 767px) {
  #sec-audience .ggk-user-card {
    width: 300px;
    padding: 18px;
  }
  #sec-audience .ggk-user-comment {
    font-size: 12px;
  }
}

/* ── 04 定价情况 ── */
#sec-pricing > .features-hero-title {
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

#sec-pricing > .scene-row {
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

#sec-pricing .scene-row-reverse {
  flex-direction: row-reverse;
}

@media (max-width: 767px) {
  #sec-pricing .scene-row-reverse {
    flex-direction: column;
  }
}

/* ── 定价可视化卡片 ── */
#sec-pricing .ggk-price-card {
  width: 100%;
  max-width: 480px;
  min-height: 400px;
  border-radius: 20px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  background: linear-gradient(135deg, rgba(99,102,241,0.08) 0%, rgba(6,182,212,0.06) 50%, rgba(139,92,246,0.08) 100%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(129,140,248,0.15);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.05);
  position: relative;
  overflow: hidden;
}

#sec-pricing .ggk-price-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 20px;
  padding: 1px;
  background: linear-gradient(90deg, rgba(99,102,241,0.4), rgba(6,182,212,0.3), rgba(139,92,246,0.4), rgba(99,102,241,0.4));
  background-size: 300% 100%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: title-border-flow 6s linear infinite;
  pointer-events: none;
}

#sec-pricing .ggk-price-tag {
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(90deg, #06b6d4, #6366f1, #818cf8);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 4s linear infinite;
}

#sec-pricing .ggk-price-label {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
}

#sec-pricing .ggk-price-metrics {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}

#sec-pricing .ggk-price-metric {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
}

#sec-pricing .ggk-metric-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

#sec-pricing .ggk-metric-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

#sec-pricing .ggk-metric-value {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

#sec-pricing .ggk-metric-desc {
  font-size: 12px;
  color: rgba(255,255,255,0.45);
}

#sec-pricing .ggk-price-free .ggk-metric-icon { background: rgba(99,102,241,0.15); }
#sec-pricing .ggk-price-pro .ggk-metric-icon { background: rgba(6,182,212,0.15); }
#sec-pricing .ggk-price-team .ggk-metric-icon { background: rgba(245,158,11,0.15); }
#sec-pricing .ggk-price-enterprise .ggk-metric-icon { background: rgba(16,185,129,0.15); }

#sec-pricing .ggk-price-badge {
  padding: 6px 16px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

#sec-pricing .ggk-price-free .ggk-price-badge {
  background: linear-gradient(90deg, rgba(99,102,241,0.2), rgba(6,182,212,0.15));
  border: 1px solid rgba(99,102,241,0.3);
  color: #818cf8;
}

#sec-pricing .ggk-price-pro .ggk-price-badge {
  background: linear-gradient(90deg, rgba(6,182,212,0.2), rgba(99,102,241,0.15));
  border: 1px solid rgba(6,182,212,0.3);
  color: #22d3ee;
}

#sec-pricing .ggk-price-team .ggk-price-badge {
  background: linear-gradient(90deg, rgba(245,158,11,0.2), rgba(139,92,246,0.15));
  border: 1px solid rgba(245,158,11,0.3);
  color: #f59e0b;
}

#sec-pricing .ggk-price-enterprise .ggk-price-badge {
  background: linear-gradient(90deg, rgba(16,185,129,0.2), rgba(99,102,241,0.15));
  border: 1px solid rgba(16,185,129,0.3);
  color: #10b981;
}

/* ============================================================
   02 / 03 / 04 区块内容入场动画（三种不同风格）
   - 初始隐藏态 + .ggk-in-view 触发态
   - 由 main.js 的 IntersectionObserver 添加触发类
   ============================================================ */

/* ---- 02 产品特点：卡片交错淡入上移 ---- */
#sec-product > .product-grid > .product-card {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, border-color 0.35s ease;
  will-change: opacity, transform;
}
#sec-product > .product-grid > .product-card.ggk-card-in {
  opacity: 1;
  transform: translateY(0);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}
/* 6 张可见卡片交错延迟，进入视口后依次浮入 */
#sec-product > .product-grid > .product-card.ggk-card-in:nth-child(1) { transition-delay: 0s; }
#sec-product > .product-grid > .product-card.ggk-card-in:nth-child(2) { transition-delay: 0.08s; }
#sec-product > .product-grid > .product-card.ggk-card-in:nth-child(3) { transition-delay: 0.16s; }
#sec-product > .product-grid > .product-card.ggk-card-in:nth-child(4) { transition-delay: 0.24s; }
#sec-product > .product-grid > .product-card.ggk-card-in:nth-child(5) { transition-delay: 0.32s; }
#sec-product > .product-grid > .product-card.ggk-card-in:nth-child(6) { transition-delay: 0.40s; }

/* 折叠区卡片 7-9：展开时交错淡入（由 ggkProductExpand 触发） */
#sec-product .ggk-product-collapsed > .product-card {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
#sec-product .ggk-product-collapsed > .product-card.ggk-card-in {
  opacity: 1;
  transform: translateY(0);
}
#sec-product .ggk-product-collapsed > .product-card.ggk-card-in:nth-child(1) { transition-delay: 0s; }
#sec-product .ggk-product-collapsed > .product-card.ggk-card-in:nth-child(2) { transition-delay: 0.12s; }
#sec-product .ggk-product-collapsed > .product-card.ggk-card-in:nth-child(3) { transition-delay: 0.24s; }

/* ---- 03 适用人群：跑马灯缩放去模糊 ---- */
#sec-audience .ggk-marquee-stage {
  opacity: 0;
  transform: scale(0.9);
  filter: blur(12px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1), filter 0.8s ease;
  will-change: opacity, transform, filter;
}
#sec-audience .ggk-marquee-stage.ggk-stage-in {
  opacity: 1;
  transform: scale(1);
  filter: blur(0);
}

/* ---- 04 定价情况：价格卡侧滑 3D 翻转入场 ---- */
#sec-pricing .ggk-price-card {
  opacity: 0;
  transform: perspective(900px) rotateY(28deg) translateX(40px);
  transition: opacity 0.7s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}
#sec-pricing .ggk-price-card.ggk-price-in {
  opacity: 1;
  transform: perspective(900px) rotateY(0deg) translateX(0);
}
/* 三张卡片从不同角度滑入 */
#sec-pricing .ggk-price-card.ggk-price-in:nth-child(1) { transition-delay: 0s; }
#sec-pricing .ggk-price-card.ggk-price-in:nth-child(2) { transition-delay: 0.18s; }
#sec-pricing .ggk-price-card.ggk-price-in:nth-child(3) { transition-delay: 0.36s; }

/* ---- 降级：尊重 prefers-reduced-motion，直接显示 ---- */
@media (prefers-reduced-motion: reduce) {
  #sec-product .product-card,
  #sec-audience .ggk-marquee-stage,
  #sec-pricing .ggk-price-card {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
}