/* ==========================================================================
   火山目拓（北京）数据智能科技有限公司 官网样式系统
   设计语言：简洁 · 克制 · 大留白 · 蓝色主调（参考字节跳动官网风格）
   ========================================================================== */

:root {
  /* 色彩系统 */
  --primary: #1E80FF;
  --primary-dark: #1664D9;
  --primary-light: #EAF2FF;
  --accent: #00C8C8;
  --dark: #0A1428;
  --dark-2: #12233F;
  --dark-text: #A9B4C3;
  --text-1: #1D2129;
  --text-2: #4E5969;
  --text-3: #86909C;
  --border: #E5E6EB;
  --divider: #EBEDF0;
  --bg: #FFFFFF;
  --bg-gray: #F7F8FA;
  --success: #00B42A;
  --warning: #FF7D00;

  /* 字体 */
  --font-cn: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", -apple-system, sans-serif;
  --font-num: "Inter", "DIN Alternate", Arial, sans-serif;

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  /* 阴影 */
  --shadow-card: 0 4px 16px rgba(29, 33, 41, 0.06);
  --shadow-hover: 0 12px 32px rgba(30, 128, 255, 0.16);
  --shadow-btn: 0 4px 12px rgba(30, 128, 255, 0.28);

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-1);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   顶部导航
   ========================================================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-1);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-menu a {
  font-size: 15px;
  color: var(--text-2);
  transition: color .3s ease;
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

.nav-menu a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -20px;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.nav-cta {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-1);
  padding: 4px;
}

/* ==========================================================================
   按钮
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font-cn);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .3s ease;
  white-space: nowrap;
}

.btn-lg { height: 48px; padding: 0 32px; font-size: 16px; }

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-secondary:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-light-primary {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.btn-light-primary:hover { background: var(--primary-light); transform: translateY(-1px); }

/* ==========================================================================
   Hero 区
   ========================================================================== */

.hero {
  background: linear-gradient(180deg, #0A1428 0%, #0D1A35 58%, #0A1428 100%);
  color: #fff;
  padding: 148px 0 64px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(30, 128, 255, 0.16) 0%, transparent 62%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30, 128, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 128, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

/* --- 极光背景层（科幻 · 简洁） --- */
.hero-aurora {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.ha-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(72px);
  will-change: transform, opacity;
}
.ha-b1 {
  width: 620px;
  height: 620px;
  left: -160px;
  top: -140px;
  background: radial-gradient(circle, rgba(30, 128, 255, 0.26) 0%, transparent 64%);
  opacity: .55;
  animation: auroraDriftA 17s ease-in-out infinite alternate;
}
.ha-b2 {
  width: 520px;
  height: 520px;
  right: -150px;
  bottom: -160px;
  background: radial-gradient(circle, rgba(0, 200, 200, 0.18) 0%, transparent 64%);
  opacity: .5;
  animation: auroraDriftB 21s ease-in-out infinite alternate;
}
@keyframes auroraDriftA {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(70px, 34px) scale(1.12); }
  100% { transform: translate(-34px, 66px) scale(.94); }
}
@keyframes auroraDriftB {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(-58px, -42px) scale(1.1); }
  100% { transform: translate(46px, -18px) scale(.9); }
}

/* --- 天玑引擎核心（已移除：第七轮改版后过于花哨，恢复简约） --- */

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(30, 128, 255, 0.16);
  border: 1px solid rgba(30, 128, 255, 0.35);
  color: #7FB4FF;
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 54px;
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: 2px;
  color: #F0F5FF;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 18px;
  color: #8C9BBA;
  max-width: 680px;
  margin: 0 auto 48px;
  line-height: 1.8;
}

/* --- 品牌归属行：官方克制风 --- */
.hero-brand-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  font-size: 13px;
  letter-spacing: 3px;
  color: #8C9BBA;
  margin-bottom: 32px;
}
.hero-brand-line .hbl-brand {
  color: #fff;
  font-weight: 600;
  letter-spacing: 4px;
}
.hero-brand-line .hbl-divider {
  width: 1px;
  height: 14px;
  background: rgba(255, 255, 255, 0.22);
}
.hero-brand-line .hbl-slogan {
  color: #C9A86A;
  letter-spacing: 5px;
}

/* --- 首屏信任条 --- */
.hero-trust {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 72px;
  padding-top: 32px;
  gap: 8px;
}
.trust-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 0 32px;
  font-size: 14px;
  color: #8C9BBA;
  white-space: nowrap;
}
.trust-item strong {
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
}
.trust-divider {
  width: 1px;
  height: 26px;
  background: rgba(255, 255, 255, 0.1);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 页面级 hero（次级页面） */
.hero-page {
  background: var(--dark);
  color: #fff;
  padding: var(--space-8) 0 var(--space-8);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero-page::before {
  content: "";
  position: absolute;
  top: -180px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(30, 128, 255, 0.2) 0%, transparent 60%);
  pointer-events: none;
}

.hero-page-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-page .hero-tag { margin-bottom: 20px; }

.hero-page h1 {
  font-size: 44px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-page p {
  font-size: 17px;
  color: var(--dark-text);
  line-height: 1.8;
  max-width: 680px;
  margin: 0 auto;
}

/* ==========================================================================
   区块通用
   ========================================================================== */

.section {
  padding: var(--space-9) 0;
}

.section-gray { background: var(--bg-gray); }
.section-light { background: var(--primary-light); }

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-8);
}

.section-header .section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 32px;
  line-height: 1.4;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.8;
}

/* ==========================================================================
   卡片
   ========================================================================== */

.card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: all .3s ease;
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}

.card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.5;
}

.card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
}

/* 网格 */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ==========================================================================
   统计栏
   ========================================================================== */

.stats {
  padding: var(--space-7) 0;
  border-bottom: 1px solid var(--divider);
}

.stats-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

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

.stat-item .stat-num {
  font-family: var(--font-num);
  font-size: 48px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.stat-item .stat-num .unit {
  font-size: 20px;
  margin-left: 4px;
  color: var(--text-3);
}

.stat-item .stat-label {
  font-size: 14px;
  color: var(--text-2);
  margin-top: 8px;
}

/* ==========================================================================
   图文交替区
   ========================================================================== */

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: var(--space-9);
}

.feature-row:last-child { margin-bottom: 0; }

.feature-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: linear-gradient(135deg, var(--primary-light), #F0F7FF);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-7);
}

.feature-text h3 {
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 16px;
  line-height: 1.4;
}

.feature-text p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.9;
  margin-bottom: 12px;
}

.feature-text .feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 10px;
}

.feature-text .feature-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 9px;
}

/* ==========================================================================
   流程区
   ========================================================================== */

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.process-step {
  background: #fff;
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: all .3s ease;
}

.process-step:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.process-step .step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-num);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 16px;
}

.process-step h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.process-step p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.8;
}

/* ==========================================================================
   洞察 / 文章卡片
   ========================================================================== */

.insight-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}

.insight-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.insight-thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--primary-light), #E8F6FF);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.insight-body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.insight-meta {
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 8px;
  display: flex;
  gap: 12px;
  align-items: center;
}

.insight-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 10px;
}

.insight-body p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.8;
  flex: 1;
}

.insight-link {
  margin-top: 16px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
}

/* ==========================================================================
   CTA 横幅
   ========================================================================== */

.cta-banner {
  background: linear-gradient(120deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.cta-banner h2 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 12px;
}

.cta-banner p {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 32px;
}

.cta-banner .btn { position: relative; z-index: 2; }

/* ==========================================================================
   时间线
   ========================================================================== */

.timeline {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-6);
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--primary-light);
}

.timeline-date {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 6px;
}

.timeline-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.timeline-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
}

/* ==========================================================================
   FAQ
   ========================================================================== */

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

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  background: #fff;
}

.faq-q {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-q .faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--text-3);
  transition: transform .3s ease;
}

.faq-a {
  display: none;
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.9;
}

.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-item.open .faq-a { display: block; }

/* ==========================================================================
   页脚
   ========================================================================== */

.footer {
  background: var(--dark);
  color: var(--dark-text);
  padding: var(--space-8) 0 var(--space-6);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: var(--space-7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--dark-text);
  margin-bottom: 10px;
  transition: color .3s ease;
}

.footer-col a:hover { color: #fff; }

.footer-bottom {
  padding-top: var(--space-5);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
}

.footer-bottom a { color: var(--dark-text); }
.footer-bottom a:hover { color: #fff; }

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 48px; }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0 24px;
    display: none;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
  }

  .nav-menu.open { display: flex; }

  .nav-menu a {
    display: block;
    width: 100%;
    padding: 16px 0;
    border-bottom: 1px solid var(--divider);
  }

  .nav-menu a.active::after { display: none; }

  .nav-toggle { display: block; }
  .nav-cta { display: none; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
  .hero { padding: 112px 0 48px; }
  .hero h1 { font-size: 32px; letter-spacing: 1px; }
  .hero-sub { font-size: 15px; margin-bottom: 28px; }
  .hero-brand-line { gap: 10px; font-size: 12px; letter-spacing: 2px; flex-wrap: wrap; }
  .hero-brand-line .hbl-slogan { letter-spacing: 3px; }
  .hero-trust { margin-top: 48px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 12px; }
  .trust-item { padding: 0; justify-content: center; }
  .trust-divider { display: none; }

  /* 极光：移动端弱化，保证性能 */
  .hero-aurora { opacity: .6; }
  .ha-blob { filter: blur(56px); }

  .hero-page h1 { font-size: 32px; }
  .section-header h2 { font-size: 26px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: var(--space-8) 0; }
}

/* ==========================================================================
   动效增强层（由 js/main.js 驱动，无 JS 时自动降级为静态页面）
   ========================================================================== */

/* --- 顶部滚动进度条 --- */
#scrollBar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 1000;
  pointer-events: none;
  border-radius: 0 3px 3px 0;
}

/* --- 导航滚动加深 --- */
.nav { transition: background .4s ease, box-shadow .4s ease, height .4s ease; }
.nav.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 24px rgba(15, 30, 60, 0.08);
}

/* --- Hero 粒子 canvas 与光晕 --- */
.hero canvas.particles,
.hero-page canvas.particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.hero-glow {
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle,
    rgba(30, 128, 255, 0.16) 0%,
    rgba(0, 200, 200, 0.07) 38%,
    transparent 68%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: opacity .5s ease;
  will-change: left, top;
}

/* --- Hero 进场动画：模糊上浮 --- */
.hero-brand-line,
.hero h1,
.hero-sub,
.hero-actions,
.hero-trust {
  animation: heroIn .9s cubic-bezier(.22, .61, .36, 1) both;
}
.hero-brand-line { animation-delay: .05s; }
.hero h1 { animation-delay: .18s; }
.hero-sub { animation-delay: .32s; }
.hero-actions { animation-delay: .52s; }
.hero-trust { animation-delay: .66s; }

.hero-page .hero-tag,
.hero-page h1,
.hero-page p {
  animation: heroIn .85s cubic-bezier(.22, .61, .36, 1) both;
}
.hero-page .hero-tag { animation-delay: .05s; }
.hero-page h1 { animation-delay: .18s; }
.hero-page p { animation-delay: .34s; }

@keyframes heroIn {
  from {
    opacity: 0;
    transform: translateY(26px);
    filter: blur(8px);
  }
  to {
    opacity: 1;
    transform: none;
    filter: blur(0);
  }
}

/* --- 滚动入场 reveal（仅在 JS 加载后生效） --- */
html.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s cubic-bezier(.22, .61, .36, 1),
              transform .8s cubic-bezier(.22, .61, .36, 1);
  transition-delay: var(--rd, 0s);
  will-change: opacity, transform;
}
html.js .reveal.in-view {
  opacity: 1;
  transform: none;
}

/* --- 主按钮流光扫过 --- */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -80%;
  width: 46%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.38), transparent);
  transform: skewX(-20deg);
  animation: btnShine 3.4s ease-in-out infinite;
}
@keyframes btnShine {
  0% { left: -80%; }
  55% { left: 140%; }
  100% { left: 140%; }
}

/* --- 卡片鼠标跟随光斑 --- */
.card,
.process-step,
.insight-card { position: relative; }
.card::after,
.process-step::after,
.insight-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity .4s ease;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%),
    rgba(30, 128, 255, 0.10), transparent 55%);
}
.card:hover::after,
.process-step:hover::after,
.insight-card:hover::after { opacity: 1; }

/* --- CTA 横幅流动光带 --- */
.cta-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg,
    transparent 32%,
    rgba(255, 255, 255, 0.08) 46%,
    rgba(255, 255, 255, 0.16) 50%,
    rgba(255, 255, 255, 0.08) 54%,
    transparent 68%);
  background-size: 260% 100%;
  animation: ctaFlow 7s ease-in-out infinite;
  pointer-events: none;
}
@keyframes ctaFlow {
  0%, 100% { background-position: 130% 0; }
  50% { background-position: -30% 0; }
}

/* --- 卡片图标微浮动 --- */
.card:hover .card-icon {
  transform: translateY(-3px) scale(1.06);
}
.card-icon {
  transition: transform .35s cubic-bezier(.22, .61, .36, 1);
}

/* --- 数字上浮聚焦（统计栏进入视口） --- */
html.js .stat-item.in-view .stat-num {
  animation: numPop .6s cubic-bezier(.22, .61, .36, 1) both;
}
@keyframes numPop {
  from { opacity: 0; transform: translateY(14px) scale(.96); }
  to { opacity: 1; transform: none; }
}

/* --- 减少动态偏好：全部降级为静态 --- */
@media (prefers-reduced-motion: reduce) {
  .hero-tag, .hero h1, .hero-sub, .hero-actions,
  .hero-page .hero-tag, .hero-page h1, .hero-page p,
  .btn-primary::after, .cta-banner::after,
  .ha-blob {
    animation: none;
  }
  html.js .reveal { opacity: 1; transform: none; transition: none; }
}

@media (max-width: 768px) {
  .hero-glow { display: none; }
  .hero canvas.particles, .hero-page canvas.particles { opacity: .6; }
}

/* ==========================================================================
   生动化 & AI 科技感视觉增强（GMO + AIGC 双产品）
   ========================================================================== */

/* --- 渐变强调文字 --- */
.grad-text {
  background: linear-gradient(92deg, var(--primary) 10%, var(--accent) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --- Hero 扫描光线 --- */
.scan-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 140px;
  pointer-events: none;
  z-index: 1;
  background: linear-gradient(180deg, transparent, rgba(30, 128, 255, 0.10), rgba(0, 200, 200, 0.08), transparent);
  animation: scanMove 7s linear infinite;
}
@keyframes scanMove {
  0% { top: -25%; }
  100% { top: 115%; }
}

/* --- AI 对话演示组件 --- */
.ai-demo {
  position: relative;
  z-index: 2;
  max-width: 660px;
  margin: 0 auto;
  background: rgba(10, 20, 40, 0.55);
  border: 1px solid rgba(120, 160, 255, 0.25);
  border-radius: 20px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 22px 24px;
  text-align: left;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
}
.ai-demo-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: #9DB2D0;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 16px;
}
.ai-demo-head .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(0, 200, 200, 0.9);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: .6; }
}
.ai-demo-head .dot-2 { background: var(--primary); box-shadow: 0 0 10px rgba(30, 128, 255, 0.9); animation-delay: .3s; }
.ai-demo-head .dot-3 { background: var(--warning); box-shadow: 0 0 10px rgba(255, 125, 0, 0.8); animation-delay: .6s; }
.ai-demo-head .ai-name { font-weight: 600; color: #C7D6F0; }
.ai-demo-head .ai-status { margin-left: auto; font-size: 12px; color: #5E6F8F; }

.ai-msg {
  border-radius: 14px;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 12px;
  max-width: 90%;
}
.ai-user {
  background: linear-gradient(135deg, rgba(30, 128, 255, 0.35), rgba(30, 128, 255, 0.18));
  border: 1px solid rgba(30, 128, 255, 0.4);
  color: #E3EDFF;
  margin-left: auto;
}
.ai-bot {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #EAF0FA;
  margin-right: auto;
}
.ai-bot .ai-reply-title {
  font-size: 13px;
  color: #7FB4FF;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.ai-card-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 12px;
  margin-top: 10px;
}
.ai-card-item .ai-thumb {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  position: relative;
  overflow: hidden;
}
.ai-card-item .ai-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.35) 50%, transparent 60%);
  animation: thumbShine 3.2s ease-in-out infinite;
}
@keyframes thumbShine {
  0%, 60% { transform: translateX(-120%); }
  100% { transform: translateX(120%); }
}
.ai-card-item .ai-name { font-size: 14px; font-weight: 600; color: #F2F7FF; }
.ai-card-item .ai-desc { font-size: 12px; color: #93A7C6; margin-top: 2px; }
.ai-card-item .ai-price {
  margin-left: auto;
  color: #4DE3A1;
  font-weight: 700;
  font-family: var(--font-num);
  font-size: 16px;
  white-space: nowrap;
}
.ai-stagger { opacity: 0; transform: translateY(10px); transition: opacity .6s ease, transform .6s ease; }
.ai-stagger.ai-show { opacity: 1; transform: none; }

.typing-caret::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 15px;
  background: #7FB4FF;
  margin-left: 4px;
  vertical-align: -2px;
  animation: caretBlink 1s steps(1) infinite;
}
@keyframes caretBlink { 50% { opacity: 0; } }

/* --- AIGC 产品区（深色渐变 + 玻璃卡片） --- */
.section-aigc {
  background: linear-gradient(160deg, #0A1428 0%, #0E1D3E 55%, #071022 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.section-aigc::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -160px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 200, 200, 0.14), transparent 65%);
  pointer-events: none;
}
.section-aigc::after {
  content: "";
  position: absolute;
  bottom: -200px;
  left: -160px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(30, 128, 255, 0.16), transparent 65%);
  pointer-events: none;
}
.section-aigc .section-header h2 { color: #fff; }
.section-aigc .section-header p { color: #9DB2D0; }
.section-aigc .container { position: relative; z-index: 2; }

.glass-card {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 28px;
  transition: all .35s ease;
  position: relative;
}
.glass-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(30, 128, 255, 0.55);
  transform: translateY(-5px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.3);
}
.glass-card .gc-tag {
  display: inline-block;
  font-size: 12px;
  color: #7FB4FF;
  border: 1px solid rgba(127, 180, 255, 0.35);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 16px;
}
.glass-card h3 { font-size: 19px; color: #fff; margin-bottom: 10px; font-weight: 600; }
.glass-card p { font-size: 13.5px; color: #A9B8D2; line-height: 1.9; }
.glass-card .gc-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(30, 128, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7FB4FF;
  margin-bottom: 18px;
  transition: transform .35s ease;
}
.glass-card:hover .gc-icon { transform: translateY(-3px) scale(1.08); }

/* --- 记忆闭环（AIGC 核心差异） --- */
.memory-loop {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
}
.memory-node {
  flex: 1;
  min-width: 150px;
  max-width: 190px;
  background: rgba(30, 128, 255, 0.12);
  border: 1px solid rgba(30, 128, 255, 0.35);
  border-radius: 16px;
  padding: 20px 16px;
  text-align: center;
  position: relative;
  transition: all .3s ease;
}
.memory-node:hover { background: rgba(30, 128, 255, 0.22); transform: translateY(-4px); }
.memory-node .mn-num {
  width: 30px;
  height: 30px;
  margin: 0 auto 10px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 18px rgba(30, 128, 255, 0.6);
}
.memory-node h4 { font-size: 15px; color: #fff; font-weight: 600; margin-bottom: 6px; }
.memory-node p { font-size: 12px; color: #9DB2D0; line-height: 1.7; }
.memory-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  color: var(--accent);
  font-size: 18px;
  font-weight: 700;
  animation: arrowMove 1.4s ease-in-out infinite;
}
@keyframes arrowMove {
  0%, 100% { transform: translateX(0); opacity: .6; }
  50% { transform: translateX(6px); opacity: 1; }
}
.memory-loop.wrap .memory-node:nth-child(5) {
  flex-basis: 100%;
  max-width: 190px;
}
.memory-highlight {
  border-color: rgba(0, 200, 200, 0.6) !important;
  background: rgba(0, 200, 200, 0.12) !important;
  box-shadow: 0 0 32px rgba(0, 200, 200, 0.18);
}
.memory-highlight .mn-num { background: var(--accent); box-shadow: 0 0 18px rgba(0, 200, 200, 0.6); }

/* --- 产品双入口卡片 --- */
.product-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.product-split .ps-card {
  position: relative;
  overflow: hidden;
  padding: 40px 36px;
  border-radius: 22px;
  transition: all .4s ease;
}
.product-split .ps-card.gmo-card {
  background: linear-gradient(150deg, #EAF2FF 0%, #FFFFFF 60%);
  border: 1px solid rgba(30, 128, 255, 0.2);
}
.product-split .ps-card.aigc-card {
  background: linear-gradient(150deg, #0A1428 0%, #12233F 80%);
  border: 1px solid rgba(0, 200, 200, 0.25);
  color: #fff;
}
.product-split .ps-card:hover { transform: translateY(-6px); box-shadow: 0 24px 64px rgba(20, 60, 120, 0.18); }
.product-split .ps-card.aigc-card:hover { box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4); }
.ps-label {
  font-size: 12px;
  letter-spacing: 2px;
  font-weight: 600;
  margin-bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.ps-label .ps-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.gmo-card .ps-label { color: var(--primary); }
.gmo-card .ps-label .ps-dot { background: var(--primary); box-shadow: 0 0 8px rgba(30, 128, 255, 0.8); }
.aigc-card .ps-label { color: var(--accent); }
.aigc-card .ps-label .ps-dot { background: var(--accent); box-shadow: 0 0 8px rgba(0, 200, 200, 0.8); }
.product-split .ps-card h3 { font-size: 26px; font-weight: 700; margin-bottom: 12px; line-height: 1.4; }
.aigc-card h3 { color: #fff; }
.product-split .ps-card .ps-desc { font-size: 14px; line-height: 1.9; margin-bottom: 22px; }
.aigc-card .ps-desc { color: #A9B8D2; }
.ps-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.ps-tags span {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid rgba(30, 128, 255, 0.3);
  color: var(--primary);
  background: rgba(30, 128, 255, 0.06);
}
.aigc-card .ps-tags span { border-color: rgba(0, 200, 200, 0.35); color: var(--accent); background: rgba(0, 200, 200, 0.08); }
.ps-link {
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap .3s ease;
}
.gmo-card .ps-link { color: var(--primary); }
.aigc-card .ps-link { color: var(--accent); }
.product-split .ps-card:hover .ps-link { gap: 14px; }

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 20px;
}
.contact-item .ci-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-item h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.contact-item p { font-size: 13px; color: var(--text-2); line-height: 1.8; }
.contact-item a.ci-value {
  font-size: 15px;
  color: var(--primary);
  font-weight: 600;
}
.contact-item a.ci-value:hover { color: var(--primary-dark); }

/* --- 生动的可视化 mockup（feature-visual 内） --- */
.viz-wrap {
  width: 100%;
  position: relative;
  text-align: center;
}
.viz-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.viz-title .vdot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 1.6s infinite; }
.semantic-field {
  position: relative;
  width: 100%;
  height: 220px;
  border: 1px dashed rgba(30, 128, 255, 0.35);
  border-radius: 16px;
  background:
    radial-gradient(rgba(30, 128, 255, 0.08) 1.5px, transparent 1.5px);
  background-size: 24px 24px;
  overflow: hidden;
}
.semantic-field .sf-point {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(30, 128, 255, 0.7);
  animation: floatDot 3.6s ease-in-out infinite;
}
.semantic-field .sf-point.a { background: var(--accent); box-shadow: 0 0 10px rgba(0, 200, 200, 0.8); }
.semantic-field .sf-point.hot { transform: scale(1.6); }
.semantic-field .sf-label {
  position: absolute;
  font-size: 11px;
  color: var(--text-3);
  white-space: nowrap;
  transform: translate(-50%, 18px);
}
@keyframes floatDot {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(4px, -8px); }
}
.semantic-field .sf-point.hot { animation: none; }

.grow-chart { width: 100%; }
.grow-chart .chart-line {
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
  animation: drawLine 2.6s ease forwards;
}
.grow-chart .chart-line.replay { animation: none; }
@keyframes drawLine { to { stroke-dashoffset: 0; } }

/* --- 小型标签 chip --- */
.chip {
  display: inline-block;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-2);
  background: #fff;
  margin: 0 4px 6px 0;
}
.chip.b { color: var(--primary); border-color: rgba(30, 128, 255, 0.35); background: var(--primary-light); }

/* --- 图标浮动（装饰） --- */
.float-y { animation: floatY 3.4s ease-in-out infinite; }
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* --- AIGC 专属 feature 行配色 --- */
.feature-row.aigc .feature-visual {
  background: linear-gradient(135deg, #0E1D3E, #12233F);
  border: 1px solid rgba(0, 200, 200, 0.2);
}
.feature-row.aigc .feature-text h3 { color: #0A1428; }
.feature-row.aigc .feature-text p { color: var(--text-2); }

/* --- 移动端适配 --- */
@media (max-width: 900px) {
  .product-split { grid-template-columns: 1fr; }
  .memory-node { flex-basis: 45%; min-width: 130px; }
  .memory-arrow { transform: rotate(90deg); }
  .memory-arrow:nth-of-type(odd) { transform: rotate(90deg); }
}
@media (max-width: 640px) {
  .ai-demo { padding: 16px 14px; }
  .ai-msg { font-size: 13px; }
  .ai-card-item .ai-price { font-size: 14px; }
  .process-steps { grid-template-columns: 1fr; }
  .cta-banner { padding: 48px 24px; }
  .cta-banner h2 { font-size: 26px; }
  .cta-banner p { font-size: 14px; }
  .hero-page { padding: 56px 0 56px; }
  .hero-page p { font-size: 15px; }
  .section-header { margin-bottom: 40px; }
  .section-header p { font-size: 15px; }
  .product-split .ps-card { padding: 28px 24px; }
  .product-split .ps-card h3 { font-size: 22px; }
  .memory-loop .memory-arrow { transform: rotate(90deg); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .grid-4 .card { padding: 20px 16px; }
  .trust-item strong { font-size: 22px; }
  .feature-visual { min-height: 260px; padding: 24px; }
  .ai-card-item { padding: 10px; }
  .ai-card-item .ai-thumb { width: 44px; height: 44px; }
  .footer-bottom { justify-content: center; text-align: center; }
}

/* ==========================================================================
   服务价格页（price.html）
   ========================================================================== */

/* 价格页 Hero 内的提示条 */
.hero-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255, 125, 0, 0.14);
  border: 1px solid rgba(255, 125, 0, 0.35);
  font-size: 14px;
  color: #FFB26B;
  text-align: left;
  line-height: 1.7;
}

/* 价格区 */
.pricing { max-width: 1200px; margin: 0 auto; padding: 72px 24px 24px; }
.pricing-head { text-align: center; margin-bottom: 48px; }
.pricing-head .kicker { font-size: 13px; color: var(--primary); letter-spacing: 4px; font-weight: 700; }
.pricing-head h2 { font-size: 34px; font-weight: 700; margin-top: 12px; color: var(--dark); }
.pricing-head p { font-size: 16px; color: var(--text-2); margin-top: 10px; }

.plans { display: flex; gap: 24px; align-items: stretch; }
.plan {
  flex: 1;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  transition: all .25s ease;
  position: relative;
}
.plan:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(10, 20, 40, 0.08); }
.plan.popular { border: 2px solid var(--primary); box-shadow: 0 16px 40px rgba(30, 128, 255, 0.12); }
.plan-flag { position: absolute; top: 14px; right: 14px; padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.plan-popular-tag {
  position: absolute;
  top: -14px;
  left: 24px;
  padding: 5px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}
.plan-name { font-size: 20px; font-weight: 700; color: var(--text-1); }
.plan-en { font-size: 13px; color: var(--text-3); margin-top: 4px; }
.plan-price { display: flex; align-items: baseline; gap: 6px; margin-top: 22px; }
.plan-price .cur { font-size: 16px; color: var(--text-3); }
.plan-price .num { font-size: 52px; font-weight: 800; color: var(--warning); line-height: 1; letter-spacing: 0; }
.plan-price .per { font-size: 14px; color: var(--text-3); }
.plan-desc { font-size: 14px; color: var(--text-2); margin-top: 8px; }
.plan-divider { height: 1px; background: var(--divider); margin: 24px 0 20px; }
.plan-features { list-style: none; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.plan-features li { display: flex; gap: 10px; font-size: 15px; color: var(--text-1); line-height: 1.6; }
.plan-features li::before {
  content: "✓";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.plan-fit { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--divider); font-size: 13px; color: var(--text-3); line-height: 1.6; }

/* 附加说明 */
.extra { max-width: 1200px; margin: 0 auto; padding: 56px 24px; }
.extra-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.extra-card { background: var(--bg-gray); border: 1px solid var(--divider); border-radius: 14px; padding: 28px; }
.extra-card h3 { font-size: 18px; font-weight: 700; color: var(--dark); display: flex; align-items: center; gap: 10px; }
.extra-card h3 .dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.extra-card p { font-size: 15px; color: var(--text-2); line-height: 1.8; margin-top: 12px; }
.extra-card .calc { font-size: 32px; font-weight: 800; color: var(--warning); margin-top: 14px; }
.extra-card .calc-sub { font-size: 14px; color: var(--text-3); margin-top: 6px; }

/* 承诺 */
.promise { background: linear-gradient(150deg, var(--primary-light), #F0FAFA); padding: 64px 0; }
.promise-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; text-align: center; }
.promise h2 { font-size: 30px; font-weight: 700; color: var(--dark); }
.promise h2 span { color: var(--warning); }
.promise p { font-size: 16px; color: var(--text-2); margin-top: 14px; line-height: 1.8; max-width: 760px; margin-left: auto; margin-right: auto; }

/* ==========================================================================
   图片 + 视频双能力展示（首页 AIGC 区 · 深色背景）
   ========================================================================== */

.media-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto 56px;
}
.media-card {
  border-radius: 18px;
  padding: 28px;
  transition: all .35s ease;
  position: relative;
  overflow: hidden;
}
.media-card.media-img {
  background: rgba(30, 128, 255, 0.12);
  border: 1px solid rgba(30, 128, 255, 0.35);
}
.media-card.media-vid {
  background: rgba(0, 200, 200, 0.1);
  border: 1px solid rgba(0, 200, 200, 0.35);
}
.media-card:hover { transform: translateY(-5px); box-shadow: 0 20px 48px rgba(0, 0, 0, 0.3); }
.media-card .mc-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 2px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.media-card .mc-label .mc-dot { width: 8px; height: 8px; border-radius: 50%; }
.media-img .mc-label .mc-dot { background: var(--primary); box-shadow: 0 0 10px rgba(30, 128, 255, 0.9); }
.media-vid .mc-label .mc-dot { background: var(--accent); box-shadow: 0 0 10px rgba(0, 200, 200, 0.9); }
.media-card h3 { font-size: 22px; color: #fff; font-weight: 700; margin-bottom: 14px; }

/* 图片网格缩略占位 */
.mc-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.mc-thumbs .mc-thumb {
  aspect-ratio: 1 / 1;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(30, 128, 255, 0.5), rgba(0, 200, 200, 0.35));
  position: relative;
  overflow: hidden;
}
.mc-thumbs .mc-thumb:nth-child(2) { background: linear-gradient(135deg, rgba(0, 200, 200, 0.5), rgba(77, 227, 161, 0.4)); }
.mc-thumbs .mc-thumb:nth-child(3) { background: linear-gradient(135deg, rgba(255, 125, 0, 0.45), rgba(255, 178, 107, 0.35)); }
.mc-thumbs .mc-thumb:nth-child(4) { background: linear-gradient(135deg, rgba(77, 227, 161, 0.45), rgba(30, 128, 255, 0.4)); }
.mc-thumbs .mc-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.35) 50%, transparent 60%);
  animation: thumbShine 3.2s ease-in-out infinite;
}
.mc-thumbs .mc-thumb:nth-child(2)::after { animation-delay: .4s; }
.mc-thumbs .mc-thumb:nth-child(3)::after { animation-delay: .8s; }
.mc-thumbs .mc-thumb:nth-child(4)::after { animation-delay: 1.2s; }

/* 视频帧占位（播放按钮 + 进度条） */
.mc-vid-frame {
  position: relative;
  aspect-ratio: 16 / 8;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 200, 200, 0.25), rgba(10, 20, 40, 0.6));
  border: 1px solid rgba(0, 200, 200, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  overflow: hidden;
}
.mc-vid-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.08), transparent 40%),
    linear-gradient(160deg, transparent 55%, rgba(0, 200, 200, 0.12));
}
.mc-play {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  cursor: pointer;
  transition: all .3s ease;
}
.mc-play:hover { background: rgba(255, 255, 255, 0.28); transform: scale(1.08); }
.mc-play svg { width: 20px; height: 20px; fill: #fff; margin-left: 3px; }
.mc-vid-bar {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 12px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.18);
  z-index: 2;
  overflow: hidden;
}
.mc-vid-bar::after {
  content: "";
  display: block;
  width: 38%;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), #4DE3A1);
  animation: vidBar 4s ease-in-out infinite;
}
@keyframes vidBar {
  0%, 100% { width: 18%; }
  50% { width: 68%; }
}
.media-card .mc-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.media-card .mc-tags span {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #C7D6F0;
  background: rgba(255, 255, 255, 0.06);
}
.media-vid .mc-tags span { border-color: rgba(0, 200, 200, 0.4); color: #9DE8E8; }

/* 产品页 AIGC 卡内的双媒体场景行 */
.aigc-media {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.aigc-media .am-row {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 13px;
  color: #A9B8D2;
  line-height: 1.6;
}
.aigc-media .am-row b {
  flex-shrink: 0;
  min-width: 34px;
  font-size: 12px;
  font-weight: 600;
  color: #7FB4FF;
  letter-spacing: 1px;
}
.aigc-media .am-row.am-v b { color: #4DE3A1; }

@media (max-width: 900px) {
  .plans { flex-direction: column; }
  .extra-grid { grid-template-columns: 1fr; }
  .media-duo { grid-template-columns: 1fr; }
  .hero-note { font-size: 13px; padding: 8px 14px; }
}
@media (max-width: 768px) {
  .pricing { padding: 48px 20px 16px; }
  .pricing-head h2 { font-size: 26px; }
  .plan-price .num { font-size: 44px; }
  .extra { padding: 40px 20px; }
  .promise { padding: 48px 0; }
  .promise h2 { font-size: 24px; }
  .mc-thumbs { grid-template-columns: repeat(4, 1fr); gap: 6px; }
  .media-card { padding: 20px; }
}

/* ==========================================================================
   官网 v3 追加样式（2026-08-18）
   新增：双业务入口卡 / GEO 深色板块 / AIGC 视频强化 / 价格注脚 / 捆绑条
   ========================================================================== */

/* ---------- 双业务入口卡（主页） ---------- */
.biz-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 8px;
}
.biz-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 260px;
  padding: 34px 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: #fff;
  transition: transform .3s ease, box-shadow .3s ease;
  box-shadow: 0 8px 32px rgba(10, 20, 40, .14);
}
.biz-card h3 { margin-top: 0; }
.biz-card p { flex: 1 0 auto; }
.biz-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(10, 20, 40, .2); }
.biz-card.biz-gmo { background: linear-gradient(135deg, #FF7D00 0%, #FF9A3C 100%); }
.biz-card.biz-aigc { background: linear-gradient(135deg, #1E80FF 0%, #4E9BFF 100%); }
.biz-card .bc-eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 2px;
  opacity: .85;
  margin-bottom: 14px;
  font-weight: 600;
}
.biz-card h3 { font-size: 26px; margin-bottom: 10px; color: #fff; }
.biz-card p { font-size: 14px; line-height: 1.8; opacity: .92; margin-bottom: 18px; }
.biz-card .bc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  border-bottom: 1.5px solid rgba(255,255,255,.55);
  padding-bottom: 2px;
}
@media (max-width: 768px) {
  .biz-duo { grid-template-columns: 1fr; }
  .biz-card { padding: 26px 22px; }
  .biz-card h3 { font-size: 22px; }
}

/* ---------- GEO 深色板块（GMO 页下方 / 主页摘要） ---------- */
.geo-band {
  background:
    radial-gradient(800px 400px at 85% -10%, rgba(0, 200, 200, .16), transparent 60%),
    radial-gradient(600px 360px at 8% 110%, rgba(30, 128, 255, .14), transparent 60%),
    var(--dark);
  color: #fff;
  padding: 88px 0;
}
.geo-band .section-header h2 { color: #fff; }
.geo-band .section-header p { color: var(--dark-text); }
.geo-band .kicker-line {
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 3px;
  font-weight: 600;
}
.geo-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 8px;
}
.geo-item {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius-md);
  padding: 22px 20px;
}
.geo-item .gi-icon {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: rgba(0, 200, 200, .15);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.geo-item h4 { color: #fff; font-size: 16px; margin-bottom: 8px; }
.geo-item p { color: var(--dark-text); font-size: 13px; line-height: 1.8; }
.geo-scenario {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.geo-scenario .gs-label { font-size: 13px; color: var(--dark-text); margin-right: 4px; }
.geo-scenario .chip {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  background: rgba(0, 200, 200, .12);
  color: #7FE9E9;
  border: 1px solid rgba(0, 200, 200, .3);
}
@media (max-width: 900px) { .geo-list { grid-template-columns: 1fr; } }

/* ---------- 价格注脚卡 ---------- */
.plan-note {
  max-width: 960px;
  margin: 24px auto 0;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  border: 1px solid rgba(30, 128, 255, .18);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.9;
}
.plan-note b { color: var(--primary); }

/* ---------- 捆绑优惠条 ---------- */
.bundle-bar {
  max-width: 960px;
  margin: 20px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.bundle-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--dark);
  background: linear-gradient(135deg, rgba(255, 125, 0, .12), rgba(0, 200, 200, .12));
  border: 1px solid rgba(255, 125, 0, .35);
}

/* ---------- AIGC 视频强化（主页 · 沉浸式大屏 + 生图四联） ---------- */
/* 全宽沉浸视频：去"框中框"，视频直接铺满大圆角屏幕 */
.aigc-stage { margin-top: 44px; }
.aigc-stage .av-frame {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: 20px;
  overflow: hidden;
  background: #0A1428;
  border: 1px solid rgba(255, 255, 255, .08);
  box-shadow: 0 32px 90px rgba(0, 0, 0, .45);
}
.aigc-stage .av-frame video.av-video {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 1.6s cubic-bezier(.22, .61, .36, 1);
}
.aigc-stage .av-frame:hover video.av-video { transform: scale(1.035); }
/* 左下渐变遮罩：保证标签可读 */
.aigc-stage .av-shade {
  position: absolute;
  left: 0; bottom: 0;
  z-index: 2;
  width: 100%;
  height: 46%;
  background: linear-gradient(180deg, transparent, rgba(6, 11, 24, .82));
  pointer-events: none;
}
/* 视频类型标签 chips */
.aigc-stage .av-caption {
  position: absolute;
  left: 26px; bottom: 30px;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 72%;
}
.aigc-stage .av-caption span {
  font-size: 12px;
  letter-spacing: 1.5px;
  color: #E3EDFF;
  background: rgba(10, 20, 40, .42);
  border: 1px solid rgba(255, 255, 255, .16);
  padding: 6px 14px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
/* 播放键：右下角，小而克制 */
.aigc-stage .av-play {
  position: absolute;
  right: 24px; bottom: 26px;
  z-index: 4;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .35);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: opacity .3s ease, background .3s ease, transform .3s ease;
}
.aigc-stage .av-play:hover { background: rgba(255, 255, 255, .28); transform: scale(1.06); }
/* 底部细进度线 */
.aigc-stage .av-bar {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 4;
  height: 2.5px;
  background: rgba(255, 255, 255, .14);
}
.aigc-stage .av-bar i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #00C8C8, #1E80FF);
  transition: width .25s linear;
}
/* 生图能力四联：亮色画廊，在深色区内形成产品展示墙 */
.aigc-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 20px;
}
.ag-card {
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(255, 255, 255, .1);
  box-shadow: 0 14px 40px rgba(0, 0, 0, .28);
  transition: transform .35s ease, box-shadow .35s ease;
}
.ag-card:hover { transform: translateY(-6px); box-shadow: 0 26px 60px rgba(0, 0, 0, .4); }
.ag-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  min-height: 160px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
/* 真实商品图：铺满 visual，保持统一的 4:3 电影感裁切 */
.ag-img {
  position: absolute;
  inset: 0;
  width: 100%;
  min-width: 100%;
  height: 100%;
  min-height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .55s cubic-bezier(.22, .61, .36, 1);
}
.ag-card:hover .ag-img { transform: scale(1.05); }
/* 图片底部 14% 加一层轻微暗渐变，压住任何水印或杂边，同时让 tag 更稳 */
.ag-visual::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 40%;
  background: linear-gradient(180deg, transparent, rgba(10, 20, 40, .22));
  pointer-events: none;
  z-index: 1;
}
.ag-tag {
  position: absolute;
  top: 10px; left: 10px;
  z-index: 2;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(10, 20, 40, .55);
  color: #fff;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .1);
}
.ag-info { padding: 13px 16px 15px; }
.ag-info h4 { font-size: 14px; color: #1D2129; margin: 0 0 4px; letter-spacing: .5px; }
.ag-info p { font-size: 12px; color: #86909C; margin: 0; }
/* 四类商品图场景：作为图片加载前的底色，同时微调氛围 */
.ag-main .ag-visual   { background: linear-gradient(160deg, #FFFFFF 0%, #F2F5F9 100%); }
.ag-scene .ag-visual  { background: radial-gradient(130% 130% at 18% 12%, #EAFFFB 0%, #C2F1EB 55%, #A0E6DF 100%); }
.ag-ad .ag-visual     { background: linear-gradient(150deg, #0E2A52 0%, #1E80FF 130%); }
.ag-detail .ag-visual { background: linear-gradient(150deg, #EDF3FF 0%, #F8FAFF 100%); }
@media (max-width: 1080px) {
  .aigc-gallery { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .aigc-stage { margin-top: 32px; }
}
@media (max-width: 640px) {
  .aigc-gallery { gap: 10px; }
  .aigc-stage .av-caption { left: 16px; bottom: 22px; max-width: 88%; gap: 6px; }
  .aigc-stage .av-caption span { font-size: 10px; padding: 4px 10px; }
  .aigc-stage .av-play { right: 14px; bottom: 18px; width: 40px; height: 40px; }
  .ag-info { padding: 10px 12px 12px; }
  .ag-info h4 { font-size: 13px; }
  .ag-info p { font-size: 11px; }
}

/* ---------- 子页 Hero 变体 ---------- */
.hero-page.hero-gmo {
  background:
    radial-gradient(920px 480px at 84% -12%, rgba(255, 125, 0, .16), transparent 62%),
    radial-gradient(760px 460px at 6% 118%, rgba(30, 128, 255, .20), transparent 62%),
    linear-gradient(155deg, #0C1B36 0%, #0A1428 52%, #0E1E3D 100%);
}
.hero-page.hero-gmo::before {
  background: radial-gradient(circle, rgba(30, 128, 255, .13) 0%, transparent 62%);
}
.hero-page.hero-gmo::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(ellipse 95% 85% at 50% 28%, #000 22%, transparent 74%);
  mask-image: radial-gradient(ellipse 95% 85% at 50% 28%, #000 22%, transparent 74%);
  pointer-events: none;
}
.hero-page.hero-gmo .hero-tag {
  color: #FFB26B;
  background: rgba(255, 125, 0, .12);
  border-color: rgba(255, 125, 0, .38);
}
.hero-page.hero-gmo h1 {
  color: #F4F8FF;
  text-shadow: 0 2px 24px rgba(10, 20, 40, .55);
}
.hero-page.hero-gmo .hero-note {
  color: #C9D4E3;
  background: rgba(255, 255, 255, .055);
  border-color: rgba(255, 125, 0, .30);
}
.hero-page.hero-aigc {
  background:
    radial-gradient(640px 320px at 85% 0%, rgba(30, 128, 255, .1), transparent 60%),
    linear-gradient(180deg, #F2F7FF 0%, #FFFFFF 100%);
}

/* ---------- 价格锚点滚动定位 ---------- */
#price { scroll-margin-top: 84px; }
#geo { scroll-margin-top: 84px; }

/* ---------- GEO 报价卡（深色上的青绿方案） ---------- */
.geo-plans .plan {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .12);
}
.geo-plans .plan-name,
.geo-plans .plan-en,
.geo-plans .plan-price,
.geo-plans .plan-desc { color: #fff; }
.geo-plans .plan-price .num { color: #fff; }
.geo-plans .plan-features li { color: var(--dark-text); }
.geo-plans .plan-features li::before { color: var(--accent); }
.geo-plans .plan-divider { background: rgba(255, 255, 255, .12); }
.geo-plans .plan-fit { color: var(--dark-text); }
.geo-plans .plan.popular { border-color: rgba(0, 200, 200, .55); }
.geo-plans .plan-popular-tag {
  background: linear-gradient(135deg, #00C8C8, #1E80FF);
  color: #fff;
}
/* ==========================================================================
   AIGC 页 v2 追加样式（2026-08-18）— 参考 WAND / Kickart 结构
   新增：hero 视频背景 / 数据背书条 / 能力卡 / 三层架构 / 演示视频卡 / 出处声明
   ========================================================================== */

/* ---------- Hero 视频背景 ---------- */
.hero-video-wrap {
  position: relative;
  overflow: hidden;
  background: #0A1428;
}
.hero-video-wrap > video.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .32;
}
.hero-video-wrap .hero-page {
  position: relative;
  z-index: 1;
  background: transparent;
}
.hero-video-wrap .hero-page h1,
.hero-video-wrap .hero-page p,
.hero-video-wrap .hero-page .hero-tag,
.hero-video-wrap .hero-page .hero-note { color: #fff; }
.hero-video-wrap .hero-page .hero-tag {
  color: #7FE9E9;
  border-color: rgba(0, 200, 200, .4);
}
.hero-video-wrap .hero-page .hero-note { color: rgba(255,255,255,.75); }
.hero-video-wrap .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,20,40,.55) 0%, rgba(10,20,40,.35) 45%, rgba(10,20,40,.78) 100%);
  z-index: 0;
}

/* ---------- 数据背书条 ---------- */
.data-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255,255,255,.14);
  border-bottom: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
}
.data-band .db-item {
  padding: 22px 18px;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,.1);
}
.data-band .db-item:last-child { border-right: none; }
.data-band .db-num {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: .5px;
}
.data-band .db-num em {
  font-style: normal;
  background: linear-gradient(90deg, #00C8C8, #1E80FF);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.data-band .db-label {
  margin-top: 6px;
  font-size: 12px;
  color: rgba(255,255,255,.62);
  letter-spacing: 1px;
}
@media (max-width: 900px) {
  .data-band { grid-template-columns: 1fr 1fr; }
  .data-band .db-item:nth-child(2) { border-right: none; }
  .data-band .db-item:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.1); }
}

/* ---------- 能力卡（Kickart 式图标卡） ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.cap-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 22px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.cap-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
  border-color: rgba(30, 128, 255, .35);
}
.cap-card .cap-ico {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
  color: #fff;
  background: linear-gradient(135deg, #1E80FF, #00C8C8);
}
.cap-card.cap-mem .cap-ico { background: linear-gradient(135deg, #FF7D00, #FFB45E); }
.cap-card.cap-mem {
  border-color: rgba(255, 125, 0, .4);
  background: linear-gradient(180deg, #FFFBF5 0%, #fff 70%);
}
.cap-card h3 { font-size: 16px; margin-bottom: 8px; color: var(--text-1); }
.cap-card p { font-size: 13px; line-height: 1.8; color: var(--text-2); }
.cap-card .cap-tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 11px;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  font-weight: 600;
  letter-spacing: .5px;
}
.cap-card.cap-mem .cap-tag { color: #D96A00; background: rgba(255,125,0,.1); }
@media (max-width: 900px) { .cap-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .cap-grid { grid-template-columns: 1fr; } }

/* ---------- 三层架构 ---------- */
.arch-3 { display: flex; flex-direction: column; gap: 0; max-width: 900px; margin: 0 auto; }
.arch-layer {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  align-items: stretch;
}
.arch-layer + .arch-layer .arch-main,
.arch-layer + .arch-layer .arch-side {
  border-top: none;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}
.arch-layer:first-child .arch-main,
.arch-layer:first-child .arch-side {
  border-top-left-radius: var(--radius-md);
  border-top-right-radius: var(--radius-md);
}
.arch-layer:last-child .arch-main,
.arch-layer:last-child .arch-side {
  border-bottom-left-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}
.arch-side {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 18px 16px;
  border: 1px solid var(--border);
  border-right: none;
  background: var(--primary-light);
  text-align: center;
}
.arch-side .as-tag {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 6px;
}
.arch-side .as-name { font-size: 15px; font-weight: 700; color: var(--text-1); }
.arch-main {
  padding: 18px 22px;
  border: 1px solid var(--border);
  background: #fff;
}
.arch-main h4 { font-size: 14px; margin-bottom: 8px; color: var(--text-1); }
.arch-main p { font-size: 13px; line-height: 1.8; color: var(--text-2); }
.arch-main .arch-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.arch-main .arch-chips span {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(30,128,255,.18);
}
@media (max-width: 760px) {
  .arch-layer { grid-template-columns: 84px 1fr; gap: 10px; }
  .arch-side { padding: 14px 8px; }
  .arch-side .as-name { font-size: 13px; }
}

/* ---------- 演示视频卡（点击播放） ---------- */
.demo-videos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.demo-video {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0A1428;
}
.demo-video video { display: block; width: 100%; aspect-ratio: 16/9; object-fit: cover; background: #0A1428; }
.demo-video .dv-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: #0A1428;
  color: #fff;
  font-size: 13px;
}
.demo-video .dv-label .dv-src {
  font-size: 11px;
  color: rgba(255,255,255,.45);
  letter-spacing: .5px;
}
@media (max-width: 900px) { .demo-videos { grid-template-columns: 1fr; } }

/* ---------- 记忆贯穿横幅 ---------- */
.mem-strip {
  max-width: 960px;
  margin: 26px auto 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 16px 22px;
  border-radius: var(--radius-md);
  background: linear-gradient(90deg, rgba(255,125,0,.1), rgba(0,200,200,.1));
  border: 1px solid rgba(255,125,0,.3);
  font-size: 14px;
  color: var(--text-1);
  line-height: 1.8;
}
.mem-strip b { color: #D96A00; }
.mem-strip .ms-badge {
  flex-shrink: 0;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, #FF7D00, #FF9A3C);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
}

/* ---------- 出处声明（淡色小字） ---------- */
.source-note {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 20px 34px;
  font-size: 11px;
  line-height: 1.9;
  color: rgba(26, 40, 60, .38);
  text-align: center;
}
.source-note a { color: rgba(26, 40, 60, .45); text-decoration: underline; }

/* ---- 修复：footer 内出处声明颜色适配深色背景 ---- */
.footer .source-note {
  color: rgba(255, 255, 255, .38);
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  margin-top: 22px;
}
.footer .source-note a { color: rgba(255, 255, 255, .48); }

/* ---- 修复：演示视频区播放引导 overlay ---- */
.demo-video { position: relative; }
.demo-video .dv-overlay {
  position: absolute;
  inset: 0 0 41px 0; /* 留出底部标签条 */
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transition: opacity .25s ease;
}
.demo-video video::-webkit-media-controls { pointer-events: auto; }
.demo-video:hover .dv-overlay { opacity: .6; }
.demo-video .dv-play {
  width: 58px; height: 58px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .15);
  border: 1px solid rgba(255, 255, 255, .3);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(3px);
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}

/* ============================================================
   2026-09 全站动效增强 · aigc 深色页
   顶部进度条 / 返回顶部 / reveal 错峰节奏 / 卡片悬浮光效
   ============================================================ */

/* --- 顶部滚动进度条 --- */
#scrollBar {
  position: fixed; top: 0; left: 0; z-index: 10000;
  height: 2px; width: 0;
  background: linear-gradient(90deg, #4a6cf7, #8fb0ff, #7c5cff);
  box-shadow: 0 0 10px rgba(108, 132, 255, .6);
  border-radius: 0 2px 2px 0;
  pointer-events: none;
}

/* --- 返回顶部 --- */
.top-return {
  position: fixed; right: 22px; bottom: 26px; z-index: 9990;
  width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #4a6cf7, #7c5cff);
  color: #fff; cursor: pointer; border: none; padding: 0;
  box-shadow: 0 10px 24px rgba(74, 108, 247, .35);
  opacity: 0; transform: translateY(14px); visibility: hidden;
  transition: opacity .3s ease, transform .3s cubic-bezier(.22, .61, .36, 1), visibility .3s;
}
.top-return.on { opacity: 1; transform: none; visibility: visible; }
.top-return:hover { transform: translateY(-3px); filter: brightness(1.08); }
.top-return svg { width: 18px; height: 18px; }

/* --- Reveal 错峰节奏：网格卡在标题之后依次浮现 --- */
html.js .cap-grid > *:nth-child(1) { --rd: .10s; }
html.js .cap-grid > *:nth-child(2) { --rd: .16s; }
html.js .cap-grid > *:nth-child(3) { --rd: .22s; }
html.js .cap-grid > *:nth-child(4) { --rd: .28s; }
html.js .cap-grid > *:nth-child(5) { --rd: .34s; }
html.js .cap-grid > *:nth-child(6) { --rd: .40s; }
html.js .cap-grid > *:nth-child(7) { --rd: .46s; }
html.js .cap-grid > *:nth-child(8) { --rd: .52s; }
html.js .grid-2 > *:nth-child(1) { --rd: .10s; }
html.js .grid-2 > *:nth-child(2) { --rd: .18s; }
html.js .grid-2 > *:nth-child(3) { --rd: .26s; }
html.js .grid-2 > *:nth-child(4) { --rd: .34s; }
html.js .grid-3 > *:nth-child(1) { --rd: .08s; }
html.js .grid-3 > *:nth-child(2) { --rd: .16s; }
html.js .grid-3 > *:nth-child(3) { --rd: .24s; }
html.js .grid-3 > *:nth-child(4) { --rd: .32s; }
html.js .grid-3 > *:nth-child(5) { --rd: .40s; }
html.js .grid-3 > *:nth-child(6) { --rd: .48s; }
html.js .memory-node { --rd: 0s; }

/* --- cap-card 悬浮：上浮 + 品牌光晕（独立于 JS 光斑） --- */
@media (hover: hover) {
  html.js .cap-card {
    transition: transform .35s cubic-bezier(.22, .61, .36, 1), box-shadow .35s ease, border-color .35s ease;
  }
  html.js .cap-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 18px 40px rgba(10, 16, 32, .35), 0 0 0 1px rgba(124, 108, 255, .35);
    border-color: rgba(124, 108, 255, .5);
  }
  html.js .cap-card:hover .cap-ico {
    transform: translateY(-3px) scale(1.07);
  }
  html.js .cap-ico { transition: transform .35s cubic-bezier(.22, .61, .36, 1); }
}

/* --- memory-loop 数据飞轮：节点呼吸微光（克制） --- */
@keyframes moMemPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(91, 140, 255, .0); }
  50%      { box-shadow: 0 0 0 8px rgba(91, 140, 255, .10); }
}
html.js .memory-node .mn-num {
  animation: moMemPulse 3.2s ease-in-out infinite;
}

/* --- 减少动态偏好：全部静置 --- */
@media (prefers-reduced-motion: reduce) {
  #scrollBar { display: none; }
  html.js .cap-card, html.js .cap-ico { transition: none !important; }
  html.js .memory-node .mn-num { animation: none !important; }
}