:root {
  --primary: #4f7df9;
  --primary-dark: #3a5fd4;
  --primary-light: #e8efff;
  --purple: #7c3aed;
  --orange: #f97316;
  --green: #22c55e;
  --bg: #f5f7fb;
  --bg-white: #ffffff;
  --bg-alt: #eef1f8;
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-tertiary: #718096;
  --border: rgba(79,125,249,.1);
  --shadow: 0 4px 24px rgba(79,125,249,.1);
  --shadow-lg: 0 20px 60px rgba(79,125,249,.15);
  --radius: 20px;
  --radius-sm: 12px;
  --spacing-xs: 8px; --spacing-sm: 16px; --spacing-md: 24px;
  --spacing-lg: 40px; --spacing-xl: 60px; --spacing-xxl: 80px;
  --font-xs: 12px; --font-sm: 14px; --font-base: 16px;
  --font-lg: 18px; --font-xl: 20px; --font-2xl: 24px;
  --font-3xl: 30px; --font-4xl: 36px; --font-5xl: 42px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans SC', system-ui, sans-serif; background: var(--bg); color: var(--text-primary); line-height: 1.7; font-size: var(--font-base); overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%;/* display: block; */}
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-lg); }
.progress-bar { position: fixed; top: 0; left: 0; height: 3px; background: linear-gradient(90deg,var(--primary),var(--purple)); z-index: 9999; transition: width .1s; }
@keyframes fadeUp { from{opacity:0;transform:translateY(30px)} to{opacity:1;transform:translateY(0)} }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
@keyframes pulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.05)} }
.fade-up { opacity: 0; transform: translateY(30px); transition: all .6s cubic-bezier(.4,0,.2,1); }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up.delay-1{transition-delay:.1s} .fade-up.delay-2{transition-delay:.2s} .fade-up.delay-3{transition-delay:.3s}

/* 导航 */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 0 var(--spacing-lg); height: 70px; display: flex; align-items: center; justify-content: space-between; background: rgba(255,255,255,.92); backdrop-filter: blur(20px); border-bottom: 1px solid transparent; transition: all .3s; }
.nav.scrolled { background: rgba(255,255,255,.98); border-bottom-color: var(--border); box-shadow: 0 2px 20px rgba(79,125,249,.08); }
.nav-logo img { height: 38px; }
.nav-links { display: flex; gap: var(--spacing-lg); }
.nav-links a { color: var(--text-secondary); font-size: var(--font-base); font-weight: 500; transition: color .3s; position: relative; padding: 4px 0; }
.nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--primary); border-radius: 2px; transition: width .3s; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta { padding: 10px 28px; border-radius: 50px; background: var(--primary); color: #fff; font-size: var(--font-sm); font-weight: 600; transition: all .3s; box-shadow: 0 4px 15px rgba(79,125,249,.3); }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(79,125,249,.4); }
.nav-mb { display: none; background: none; border: none; font-size: var(--font-2xl); color: var(--text-primary); cursor: pointer; }
.nav-mb-mask { display: none; position: fixed; inset: 0; z-index: 999; background: rgba(0,0,0,.4); }
.nav-mb-menu { display: none; position: fixed; top: 70px; left: 0; right: 0; z-index: 1001; background: #fff; padding: var(--spacing-md); border-bottom: 1px solid var(--border); box-shadow: 0 8px 30px rgba(0,0,0,.1); flex-direction: column; gap: 4px; }
.nav-mb-menu.open { display: flex; }
.nav-mb-menu a { display: block; padding: 12px 0; color: var(--text-secondary); font-size: var(--font-lg); border-bottom: 1px solid #f1f1f1; }
.nav-mb-menu a:last-child { border: none; color: var(--primary); font-weight: 600; }

/* Banner */
.detail-banner { position: relative; overflow: hidden; min-height: 560px; margin-top: 70px; display: flex; align-items: center; }
.detail-banner-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.detail-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,26,46,.88) 0%, rgba(79,125,249,.75) 50%, rgba(124,58,237,.6) 100%); z-index: 1; }
.detail-banner::after { content: ''; position: absolute; top: -30%; right: -5%; width: 700px; height: 700px; border-radius: 50%; background: radial-gradient(circle, rgba(79,125,249,.12) 0%, transparent 70%); z-index: 2; }
.banner-content { position: relative; z-index: 3; display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); align-items: center; padding: var(--spacing-xl) 0; }
.banner-tag { display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; border-radius: 100px; background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.25); font-size: var(--font-sm); color: rgba(255,255,255,.9); font-weight: 500; margin-bottom: var(--spacing-md); backdrop-filter: blur(8px); }
.banner-title { font-size: var(--font-5xl); font-weight: 900; color: #fff; line-height: 1.15; margin-bottom: var(--spacing-sm); text-shadow: 0 4px 30px rgba(0,0,0,.3); }
.banner-title span { color: #f97316; }
.banner-desc { font-size: var(--font-lg); color: rgba(255,255,255,.85); line-height: 1.8; margin-bottom: var(--spacing-lg); }
.banner-btns { display: flex; gap: var(--spacing-sm); flex-wrap: wrap; }
.btn-primary { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: var(--radius-sm); background: var(--primary); color: #fff; font-size: var(--font-base); font-weight: 700; transition: all .3s; box-shadow: 0 8px 30px rgba(79,125,249,.4); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(79,125,249,.5); }
.btn-secondary { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: var(--radius-sm); background: rgba(255,255,255,.15); color: #fff; font-size: var(--font-base); font-weight: 600; border: 1px solid rgba(255,255,255,.3); backdrop-filter: blur(8px); transition: all .3s; }
.btn-secondary:hover { background: rgba(255,255,255,.25); transform: translateY(-3px); }
.banner-visual { position: relative; }
.banner-img { border-radius: var(--radius); box-shadow: 0 30px 80px rgba(0,0,0,.4); animation: float 6s ease-in-out infinite; width: 100%; height: 340px; object-fit: cover; }
.banner-img-card { position: absolute; bottom: -20px; left: -30px; background: rgba(255,255,255,.95); backdrop-filter: blur(10px); border-radius: var(--radius-sm); padding: var(--spacing-sm) var(--spacing-md); box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: var(--spacing-sm); }
.banner-img-card i { font-size: 28px; color: var(--primary); }
.banner-img-card .info strong { display: block; font-size: var(--font-lg); color: var(--text-primary); }
.banner-img-card .info span { font-size: var(--font-xs); color: var(--text-tertiary); }

/* Section */
.section { padding: var(--spacing-xxl) 0; }
.section-alt { background: var(--bg-white); }
.section-hd { text-align: center; margin-bottom: var(--spacing-xl); }
.section-hd h2 { font-size: var(--font-4xl); font-weight: 800; color: var(--text-primary); margin-bottom: var(--spacing-sm); }
.section-hd h2 span { color: var(--primary); }
.section-hd p { font-size: var(--font-lg); color: var(--text-tertiary); }

/* 功能模块 */
.modules-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
.module-card { padding: var(--spacing-md); border-radius: var(--radius); background: var(--bg); border: 1px solid var(--border); transition: all .4s; text-align: center; }
.module-card:hover { background: var(--bg-white); box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: transparent; }
.module-icon { width: 64px; height: 64px; border-radius: 18px; display: flex; align-items: center; justify-content: center; font-size: 28px; margin: 0 auto var(--spacing-sm); }
.module-card:nth-child(1) .module-icon { background: var(--primary-light); color: var(--primary); }
.module-card:nth-child(2) .module-icon { background: #fff3e6; color: var(--orange); }
.module-card:nth-child(3) .module-icon { background: var(--green-light); color: var(--green); }
.module-card:nth-child(4) .module-icon { background: var(--purple-light); color: var(--purple); }
.module-card:nth-child(5) .module-icon { background: #fce7f3; color: #ec4899; }
.module-card:nth-child(6) .module-icon { background: rgba(6,182,212,.1); color: var(--cyan); }
.module-card h3 { font-size: var(--font-lg); font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.module-card p { font-size: var(--font-sm); color: var(--text-tertiary); line-height: 1.6; }
/* 彩色模块图标 */
.module-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto var(--spacing-sm);
}

.icon-purchase { background: linear-gradient(135deg, #e0e7ff, #dbeafe); color: #4f7df9; }
.icon-sale     { background: linear-gradient(135deg, #fff3e0, #ffe0b2); color: #f97316; }
.icon-retail   { background: linear-gradient(135deg, #fce7f3, #fbcfe8); color: #ec4899; }
.icon-mall     { background: linear-gradient(135deg, #dbeafe, #c7d2fe); color: #7c3aed; }
.icon-warehouse{ background: linear-gradient(135deg, #d1fae5, #a7f3d0); color: #16a34a; }
.icon-production{background: linear-gradient(135deg, #e0e7ff, #bfdbfe); color: #3b82f6; }
.icon-finance  { background: linear-gradient(135deg, #fef3c7, #fde68a); color: #d97706; }
.icon-goods    { background: linear-gradient(135deg, #e0e7ff, #e0e7ff); color: #6366f1; }
.icon-report   { background: linear-gradient(135deg, #fce7f3, #fbcfe8); color: #db2777; }
.icon-data     { background: linear-gradient(135deg, #cffafe, #a5f3fc); color: #06b6d4; }
.icon-mobile   { background: linear-gradient(135deg, #e0e7ff, #ddd6fe); color: #8b5cf6; }
/* 场景图 */
.scene-tabs { display: flex; justify-content: center; gap: var(--spacing-sm); margin-bottom: var(--spacing-lg); flex-wrap: wrap; }
.scene-tab { padding: 10px 28px; border-radius: 50px; border: 1px solid var(--border); background: var(--bg-white); color: var(--text-secondary); font-size: var(--font-sm); font-weight: 500; cursor: pointer; transition: all .3s; }
.scene-tab:hover { border-color: var(--primary); color: var(--primary); }
.scene-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.scene-display { background: var(--bg-white); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.scene-img-wrap { position: relative; height: 360px; overflow: hidden; }
.scene-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.scene-overlay { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(26,26,46,.85) 0%, transparent 60%); display: flex; flex-direction: column; justify-content: flex-end; padding: var(--spacing-lg); }
.scene-overlay h3 { font-size: var(--font-2xl); font-weight: 800; color: #fff; margin-bottom: 8px; }
.scene-overlay p { font-size: var(--font-sm); color: rgba(255,255,255,.85); }

/* 版本切换 */
.version-tabs { display: flex; justify-content: center; gap: var(--spacing-sm); margin-bottom: var(--spacing-xl); }
.version-tab { padding: 12px 36px; border-radius: var(--radius-sm); border: 2px solid var(--border); background: var(--bg-white); color: var(--text-secondary); font-size: var(--font-base); font-weight: 600; cursor: pointer; transition: all .3s; }
.version-tab:hover { border-color: var(--primary); color: var(--primary); }
.version-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 价格卡片 */
.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); }
.price-card { background: var(--bg-white); border-radius: var(--radius); padding: var(--spacing-lg); border: 2px solid var(--border); transition: all .4s cubic-bezier(.4,0,.2,1); position: relative; }
.price-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.price-card.featured { background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%); border-color: transparent; color: #fff; }
.price-card.featured * { color: #fff; }
.price-card.featured .price-desc { color: rgba(255,255,255,.8); }
.price-card.featured .price-unit { color: rgba(255,255,255,.7); }
.price-card.featured .price-features li { color: rgba(255,255,255,.9); border-bottom-color: rgba(255,255,255,.1); }
.price-card.featured .price-features li i { color: rgba(255,255,255,.7) !important; }
.price-card.featured .price-features li.disable { color: rgba(255,255,255,.4) !important; text-decoration: line-through; }
.price-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); padding: 6px 20px; border-radius: 100px; font-size: var(--font-xs); font-weight: 700; background: var(--orange); color: #fff; }
.price-name { font-size: var(--font-xl); font-weight: 800; color: var(--text-primary); margin-bottom: 4px; }
.price-card.featured .price-name { color: #fff; }
.price-desc { font-size: var(--font-xs); color: var(--text-tertiary); margin-bottom: var(--spacing-sm); }
.price-value { font-size: var(--font-4xl); font-weight: 900; color: var(--orange); line-height: 1; margin-bottom: 4px; }
.price-card.featured .price-value { color: #fff; }
.price-unit { font-size: var(--font-xs); color: var(--text-tertiary); margin-bottom: var(--spacing-md); }
.price-features { list-style: none; margin-bottom: var(--spacing-md); }
.price-features li { display: flex; align-items: center; gap: 10px; padding: 8px 0; font-size: var(--font-sm); color: var(--text-secondary); border-bottom: 1px solid rgba(0,0,0,.05); }
.price-features li:last-child { border: none; }
.price-features li i { color: var(--green); font-size: var(--font-base); flex-shrink: 0; }
.price-features li.disable i { color: var(--text-tertiary); }
.price-features li.disable { color: var(--text-tertiary); text-decoration: line-through; }
.price-btn { display: block; width: 100%; padding: var(--spacing-sm); border-radius: var(--radius-sm); text-align: center; font-size: var(--font-base); font-weight: 700; transition: all .3s; border: 2px solid var(--primary); background: var(--primary); color: #fff; }
.price-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,125,249,.3); }
.price-card.featured .price-btn { background: #fff; color: var(--primary); border-color: #fff; }
.price-card.featured .price-btn:hover { background: rgba(255,255,255,.9); }

.saas-wrap, .private-wrap { display: none; }
.saas-wrap.show, .private-wrap.show { display: grid; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--bg-white); border-radius: var(--radius); margin-bottom: var(--spacing-sm); border: 1px solid var(--border); overflow: hidden; transition: all .3s; }
.faq-item:hover { box-shadow: var(--shadow); }
.faq-q { display: flex; align-items: center; justify-content: space-between; padding: var(--spacing-sm) var(--spacing-md); cursor: pointer; font-size: var(--font-base); font-weight: 600; color: var(--text-primary); gap: var(--spacing-sm); }
.faq-q i { font-size: var(--font-xl); color: var(--primary); transition: transform .3s; flex-shrink: 0; }
.faq-item.open .faq-q i { transform: rotate(45deg); }
.faq-a { padding: 0 var(--spacing-md) var(--spacing-sm); font-size: var(--font-sm); color: var(--text-tertiary); line-height: 1.8; display: none; }
.faq-item.open .faq-a { display: block; }

/* CTA */
.cta-section { padding: var(--spacing-xxl) 0; background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: -200px; right: -200px; width: 600px; height: 600px; border-radius: 50%; background: rgba(255,255,255,.05); }
.cta-section::after { content: ''; position: absolute; bottom: -150px; left: -150px; width: 400px; height: 400px; border-radius: 50%; background: rgba(255,255,255,.05); }
.cta-inner { text-align: center; position: relative; z-index: 1; }
.cta-inner h2 { font-size: var(--font-4xl); font-weight: 900; color: #fff; margin-bottom: var(--spacing-sm); }
.cta-inner p { font-size: var(--font-lg); color: rgba(255,255,255,.85); margin-bottom: var(--spacing-lg); }
.cta-btns { display: flex; gap: var(--spacing-sm); justify-content: center; flex-wrap: wrap; }
.btn-white { display: inline-flex; align-items: center; gap: 8px; padding: 14px 36px; border-radius: var(--radius-sm); background: #fff; color: var(--primary); font-size: var(--font-base); font-weight: 700; transition: all .3s; box-shadow: 0 8px 30px rgba(0,0,0,.15); }
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(0,0,0,.2); }
.btn-outline-white { display: inline-flex; align-items: center; gap: 8px; padding: 14px 36px; border-radius: var(--radius-sm); background: transparent; color: #fff; font-size: var(--font-base); font-weight: 600; border: 2px solid rgba(255,255,255,.4); transition: all .3s; }
.btn-outline-white:hover { background: rgba(255,255,255,.15); border-color: #fff; }

/* Footer */
/*.footer { background: #1a1a2e; color: rgba(255,255,255,.6); padding: var(--spacing-xl) 0 0; }
.ft-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--spacing-xl); margin-bottom: var(--spacing-xl); }
.ft-brand img { height: 40px; margin-bottom: var(--spacing-xs); }
.ft-brand p { font-size: var(--font-sm); }
.ft-col h4 { color: #fff; font-size: var(--font-base); font-weight: 700; margin-bottom: var(--spacing-sm); }
.ft-col ul { list-style: none; }
.ft-col li { margin-bottom: 10px; }
.ft-col a { color: rgba(255,255,255,.55); font-size: var(--font-sm); transition: color .3s; }
.ft-col a:hover { color: #fff; }
.ft-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: var(--spacing-sm) 0; text-align: center; font-size: var(--font-sm); }*/

@media (max-width: 1024px) {
  .banner-content { grid-template-columns: 1fr; gap: var(--spacing-lg); text-align: center; }
  .banner-btns { justify-content: center; }
  .banner-visual { display: none; }
  .modules-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .oss-grid { grid-template-columns: repeat(2, 1fr); }
  .oss-notice-grid { grid-template-columns: repeat(2, 1fr); }
  .ft-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --spacing-lg: 24px; --spacing-xl: 40px; --spacing-xxl: 56px; --font-4xl: 28px; --font-5xl: 32px; }
  .container { padding: 0 var(--spacing-md); }
  .nav { padding: 0 var(--spacing-md); }
  .nav-links, .nav-cta { display: none; }
  .nav-mb { display: block; }
  .banner-title { font-size: var(--font-3xl); }
  .banner-desc { font-size: var(--font-base); }
  .modules-grid, .pricing-grid { grid-template-columns: 1fr; }
  .oss-stats { flex-wrap: wrap; gap: var(--spacing-sm); }
  .oss-stat-divider { display: none; }
  .oss-grid { grid-template-columns: 1fr; }
  .oss-notice { flex-direction: column; }
  .oss-notice-grid { grid-template-columns: repeat(2, 1fr); }
  .oss-cta { flex-direction: column; text-align: center; gap: var(--spacing-md); padding: var(--spacing-lg); }
  .ft-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .cta-inner h2 { font-size: var(--font-2xl); }
  .cta-btns { flex-direction: column; align-items: center; }
}

/* 开源版按钮 */
/* 开源专区 全新样式 */
.open-source-section {
  padding: 80px 0;
  background: #f6f8ff;
}
.open-header {
  text-align: center;
  margin-bottom: 50px;
}
.open-tag {
  display: inline-block;
  padding: 6px 14px;
  background: #eef2ff;
  color: #4f7df9;
  border-radius: 50px;
  font-size: 12px;
  margin-bottom: 12px;
}
.open-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: #111;
  margin-bottom: 10px;
}
.open-header p {
  font-size: 15px;
  color: #666;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

/* 数据统计 */
.open-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}
.stat-item {
  text-align: center;
}
.stat-item .num {
  font-size: 26px;
  font-weight: 700;
  color: #4f7df9;
  margin-bottom: 4px;
}
.stat-item .label {
  font-size: 13px;
  color: #666;
}

/* 卡片布局 */
.open-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 50px;
}
.open-card {
  background: #fff;
  border-radius: 18px;
  padding: 30px;
  position: relative;
  box-shadow: 0 6px 24px rgba(0,0,0,0.04);
  transition: all 0.3s;
}
.open-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}
.open-ribbon {
  position: absolute;
  top: 12px;
  right: 12px;
  background: #4f7df9;
  color: #fff;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 8px;
}
.card-head {
  margin-bottom: 24px;
}
.version-tag {
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  border-radius: 6px;
  margin-bottom: 10px;
}
.version-new {
  background: #eef2ff;
  color: #4f7df9;
}
.version-stable {
  background: #ecfdf5;
  color: #16a34a;
}
.version-old {
  background: #f9fafb;
  color: #64748b;
}
.card-head h3 {
  font-size: 18px;
  font-weight: 600;
  color: #111;
  margin-bottom: 6px;
}
.card-head p {
  font-size: 13px;
  color: #666;
  line-height: 1.6;
}
.card-body {
  margin-bottom: 24px;
}
.line {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}
.line i {
  font-size: 18px;
  color: #4f7df9;
  margin-top: 4px;
}
.line .texts {
  flex: 1;
}
.line .texts span {
  display: block;
  font-size: 12px;
  color: #666;
  margin-bottom: 3px;
}
.line .texts a {
  display: block;
  font-size: 13px;
  color: #4f7df9;
  word-break: break-all;
  text-decoration: none;
}
.line .texts small {
  display: block;
  font-size: 12px;
  color: #999;
  margin-top: 3px;
}
.card-foot {
  text-align: center;
}
.free-badge {
  display: inline-block;
  padding: 6px 14px;
  background: #f0fdf4;
  color: #16a34a;
  border-radius: 50px;
  font-size: 12px;
}

/* 开源声明 */
.open-notice {
  background: #fff;
  border-radius: 18px;
  padding: 30px;
  display: flex;
  gap: 30px;
  margin-bottom: 40px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.04);
}
.notice-left {
  display: flex;
  align-items: center;
  gap: 16px;
}
.notice-left i {
  font-size: 30px;
  color: #4f7df9;
}
.notice-left .texts h4 {
  font-size: 18px;
  font-weight: 600;
  color: #111;
  margin-bottom: 4px;
}
.notice-left .texts p {
  font-size: 13px;
  color: #666;
}
.notice-right {
  flex: 1;
}
.rules {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.rule {
  font-size: 13px;
  color: #333;
  display: flex;
  align-items: center;
  gap: 6px;
}
.rule i {
  font-size: 14px;
}
.warn {
  background: #fff9e6;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 12px;
  color: #92400e;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 底部按钮 */
.open-bottom {
  text-align: center;
}
.star-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: #111;
  color: #fff;
  border-radius: 12px;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.3s;
}
.star-btn:hover {
  background: #222;
  transform: translateY(-2px);
}

/* 自适应 */
@media (max-width: 1024px) {
  .open-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .open-cards {
    grid-template-columns: 1fr;
  }
  .open-notice {
    flex-direction: column;
  }
  .rules {
    grid-template-columns: 1fr;
  }
}
.btn-oss{
        display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    background: #10b981;
    color: #ffffff;
    font-size: var(--font-base);
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, .3);
    backdrop-filter: blur(8px);
    transition: all .3s;
}

/* 头部 */
.oss-header { text-align: center; margin-bottom: var(--spacing-xl); position: relative; z-index: 1; }
.oss-header-tag { display: inline-flex; align-items: center; gap: 6px; padding: 6px 16px; background: linear-gradient(135deg,var(--primary),var(--purple)); color: #fff; border-radius: 100px; font-size: var(--font-xs); font-weight: 700; margin-bottom: var(--spacing-sm); }
.oss-header h2 { font-size: var(--font-5xl); font-weight: 900; color: var(--text-primary); margin-bottom: 8px; background: linear-gradient(135deg,#1e293b,#4f7df9,#7c3aed); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.oss-header p { font-size: var(--font-lg); color: var(--text-tertiary); }

/* 数据统计 */
.oss-stats { display: flex; justify-content: center; align-items: center; gap: var(--spacing-md); margin-bottom: var(--spacing-xxl); position: relative; z-index: 1; }
.oss-stat-item { text-align: center; }
.oss-stat-num { font-size: var(--font-4xl); font-weight: 900; color: var(--primary); line-height: 1; }
.oss-stat-num span { font-size: var(--font-xl); font-weight: 700; }
.oss-stat-label { font-size: var(--font-sm); color: var(--text-tertiary); margin-top: 4px; }
.oss-stat-divider { width: 1px; height: 40px; background: linear-gradient(180deg,transparent,#e5e7eb,transparent); }

/* 卡片网格 */
.oss-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); position: relative; z-index: 1; margin-bottom: var(--spacing-xxl); }

/* 版本卡片 */
.oss-card { background: #fff; border-radius: var(--radius-lg); border: 1px solid #e5e7eb; padding: var(--spacing-lg); transition: all .4s; position: relative; overflow: hidden; }
.oss-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg,#e5e7eb,#e5e7eb); transition: background .4s; }
.oss-card:hover { transform: translateY(-8px); box-shadow: 0 24px 48px rgba(0,0,0,.1); border-color: transparent; }
.oss-card.featured { border-color: var(--primary); }
.oss-card.featured::before { background: linear-gradient(90deg,var(--primary),var(--purple)); }
.oss-card-ribbon { position: absolute; top: 16px; right: -32px; background: linear-gradient(135deg,var(--primary),var(--purple)); color: #fff; font-size: var(--font-xs); font-weight: 700; padding: 4px 40px; transform: rotate(45deg); }

.oss-card-top { text-align: center; padding-bottom: var(--spacing-md); border-bottom: 1px solid #f1f5f9; margin-bottom: var(--spacing-md); }
.oss-version-badge { display: inline-flex; align-items: center; justify-content: center; min-width: 56px; height: 32px; padding: 0 16px; border-radius: 8px; font-size: var(--font-sm); font-weight: 800; margin-bottom: 8px; }
.oss-version-badge.v7 { background: linear-gradient(135deg,#4f7df9,#7c3aed); color: #fff; }
.oss-version-badge.v6 { background: linear-gradient(135deg,#22c55e,#16a34a); color: #fff; }
.oss-version-badge.v5 { background: #f1f5f9; color: #64748b; }
.oss-card-top h3 { font-size: var(--font-xl); font-weight: 800; color: var(--text-primary); margin-bottom: 4px; }
.oss-card-desc { font-size: var(--font-sm); color: var(--text-tertiary); }

.oss-card-main { display: flex; flex-direction: column; gap: var(--spacing-sm); margin-bottom: var(--spacing-md); }
.oss-link-row { display: flex; align-items: center; gap: 12px; padding: 14px; background: #f8fafc; border-radius: var(--radius-sm); transition: all .3s; }
.oss-link-row:hover { background: #f1f5f9; }
.oss-link-icon { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,var(--primary-light),#e0e7ff); color: var(--primary); border-radius: 10px; font-size: var(--font-lg); flex-shrink: 0; }
.oss-link-content { flex: 1; min-width: 0; }
.oss-link-label { display: block; font-size: var(--font-xs); color: var(--text-tertiary); margin-bottom: 2px; }
.oss-link-url { display: block; font-size: var(--font-sm); color: var(--primary); font-weight: 600; word-break: break-all; }
.oss-link-url:hover { text-decoration: underline; }
.oss-link-account { display: block; font-size: var(--font-xs); color: var(--text-tertiary); margin-top: 2px; }
.oss-link-arrow { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; background: var(--primary); color: #fff; border-radius: 8px; font-size: var(--font-sm); flex-shrink: 0; transition: all .3s; }
.oss-link-arrow:hover { background: var(--purple); transform: scale(1.1); }

.oss-card-ft { display: flex; justify-content: center; }
.oss-badge { display: inline-flex; align-items: center; gap: 6px; padding: 8px 20px; border-radius: 100px; font-size: var(--font-sm); font-weight: 600; }
.oss-badge.free { background: rgba(34,197,94,.1); color: #16a34a; }
.oss-badge.free i { color: #22c55e; }

/* 开源声明 */
.oss-notice { display: flex; gap: var(--spacing-lg); background: #fff; border: 1px solid #e5e7eb; border-radius: var(--radius-lg); padding: var(--spacing-lg); position: relative; z-index: 1; margin-bottom: var(--spacing-xl); }
.oss-notice-left { display: flex; align-items: center; gap: var(--spacing-sm); flex-shrink: 0; }
.oss-notice-icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,var(--primary),var(--purple)); color: #fff; border-radius: 14px; font-size: var(--font-2xl); }
.oss-notice-info h4 { font-size: var(--font-lg); font-weight: 800; color: var(--text-primary); }
.oss-notice-info p { font-size: var(--font-sm); color: var(--text-tertiary); }
.oss-notice-right { flex: 1; }
.oss-notice-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-sm); margin-bottom: var(--spacing-sm); }
.oss-notice-item { display: flex; align-items: center; gap: 6px; font-size: var(--font-sm); color: var(--text-secondary); }
.oss-notice-item i { font-size: var(--font-base); }
.oss-notice-item.allow i { color: #22c55e; }
.oss-notice-item.deny i { color: #ef4444; }
.oss-notice-item.warn i { color: #f97316; }
.oss-notice-item.info i { color: var(--primary); }
.oss-notice-warn { display: flex; align-items: center; gap: 8px; padding: 10px 16px; background: linear-gradient(90deg,#fef3c7,#fef9c3); border-radius: var(--radius-sm); font-size: var(--font-sm); color: #92400e; }
.oss-notice-warn i { color: #f59e0b; flex-shrink: 0; }

/* CTA */
.oss-cta { display: flex; align-items: center; justify-content: space-between; background: linear-gradient(135deg,#1e293b 0%,#334155 100%); border-radius: var(--radius-lg); padding: var(--spacing-lg) var(--spacing-xxl); position: relative; z-index: 1; overflow: hidden; }
.oss-cta::before { content: ''; position: absolute; top: 0; right: 0; width: 300px; height: 100%; background: linear-gradient(90deg,transparent,rgba(79,125,249,.1)); }
.oss-cta-content { position: relative; z-index: 1; }
.oss-cta-content h3 { font-size: var(--font-2xl); font-weight: 800; color: #fff; margin-bottom: 4px; }
.oss-cta-content p { font-size: var(--font-base); color: rgba(255,255,255,.6); }
.oss-cta-btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; background: linear-gradient(135deg,var(--primary),var(--purple)); color: #fff; border-radius: var(--radius-sm); font-size: var(--font-base); font-weight: 700; position: relative; z-index: 1; transition: all .3s; box-shadow: 0 8px 24px rgba(79,125,249,.3); }
.oss-cta-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(79,125,249,.4); }
.oss-cta-btn i:first-child { font-size: var(--font-lg); }

/* V8弹窗 */
.modal-overlay { display: none; position: fixed; inset: 0; z-index: 9999; background: rgba(0,0,0,.7); backdrop-filter: blur(6px); justify-content: center; align-items: center; padding: var(--spacing-md); }
.modal-overlay.show { display: flex; }
.modal { background: #fff; border-radius: var(--radius); max-width: 640px; width: 100%; max-height: 90vh;  box-shadow: 0 30px 80px rgba(0,0,0,.3); position: relative; animation: fadeUp .4s ease; }
.modal-header { background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%); padding: var(--spacing-lg); border-radius: var(--radius) var(--radius) 0 0; position: relative; }
.modal-close { position: absolute; top: var(--spacing-sm); right: var(--spacing-sm); width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,.15); border: none; color: #fff; font-size: var(--font-xl); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all .3s; }
.modal-close:hover { background: rgba(255,255,255,.25); transform: rotate(90deg); }
.modal-header h3 { font-size: var(--font-2xl); font-weight: 900; color: #fff; margin-bottom: 4px; }
.modal-header p { font-size: var(--font-sm); color: rgba(255,255,255,.7); }
.modal-body { padding: var(--spacing-lg); }
.modal-v8-tag { display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; border-radius: 100px; background: linear-gradient(135deg,var(--primary),var(--purple)); color: #fff; font-size: var(--font-xs); font-weight: 700; margin-bottom: var(--spacing-md); }
.modal-section { margin-bottom: var(--spacing-md); }
.modal-section h4 { font-size: var(--font-base); font-weight: 700; color: var(--text-primary); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.modal-section h4 i { color: var(--primary); }
.modal-links { display: flex; flex-direction: column; gap: 8px; }
.modal-link { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: var(--radius-sm); background: var(--bg); font-size: var(--font-sm); color: var(--text-secondary); transition: all .3s; }
.modal-link:hover { background: var(--primary-light); color: var(--primary); }
.modal-link i { color: var(--primary); flex-shrink: 0; }
.modal-link strong { color: var(--text-primary); font-weight: 600; }
.modal-link a { color: var(--primary); word-break: break-all; }
.modal-link a:hover { text-decoration: underline; }
.modal-accounts { background: linear-gradient(135deg,rgba(79,125,249,.06),rgba(124,58,237,.06)); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: var(--spacing-md); margin-bottom: var(--spacing-sm); }
.modal-accounts h4 { color: var(--purple); margin-bottom: 12px; }
.modal-account { display: flex; align-items: center; gap: var(--spacing-sm); padding: 8px 0; border-bottom: 1px solid var(--border); font-size: var(--font-sm); }
.modal-account:last-child { border: none; }
.modal-account .acc-tag { padding: 2px 10px; border-radius: 100px; font-size: var(--font-xs); font-weight: 700; background: var(--purple-light); color: var(--purple); }
.modal-account .acc-user { font-weight: 700; color: var(--text-primary); min-width: 80px; }
.modal-account .acc-note { color: var(--text-tertiary); font-size: var(--font-xs); }
.modal-warn { background: rgba(249,115,22,.06); border: 1px solid rgba(249,115,22,.2); border-radius: var(--radius-sm); padding: var(--spacing-sm) var(--spacing-md); margin-top: var(--spacing-md); }
.modal-warn p { font-size: var(--font-xs); color: rgba(249,115,22,.9); line-height: 1.6; }
.modal-contact { display: flex; gap: var(--spacing-sm); margin-top: var(--spacing-md); flex-wrap: wrap; }
.modal-contact a { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: var(--radius-sm); font-size: var(--font-sm); font-weight: 600; transition: all .3s; }
.modal-contact .mc-primary { background: var(--primary); color: #fff; }
.modal-contact .mc-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,125,249,.3); }
.modal-contact .mc-orange { background: linear-gradient(135deg,var(--orange),#ef4444); color: #fff; }
.modal-contact .mc-orange:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(249,115,22,.3); }

/* 独立新增：高级一体化模块 */
.advance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.advance-item {
  display: flex;
  align-items: center;
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}
.advance-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.advance-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: linear-gradient(135deg, #e8efff, #dbeafe);
  color: #4f7df9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-right: 16px;
  flex-shrink: 0;
}
.advance-text h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.advance-text p {
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.5;
}

@media (max-width: 1024px) {
  .advance-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .advance-grid {
    grid-template-columns: 1fr;
  }
}
/* 新配色：深蓝科技风 + 柔和渐变 */
.tech-advantage-section {
  padding: 70px 0;
  background: #f0f4ff;
}
.tech-hd {
  text-align: center;
  margin-bottom: 50px;
}
.tech-hd h2 {
  font-size: 30px;
  font-weight: 700;
  color: #1d2129;
  margin-bottom: 12px;
}
.tech-hd h2 span {
  color: #2563eb;
}
.tech-hd p {
  font-size: 15px;
  color: #475569;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.tech-card {
  background: #ffffff;
  border-radius: 18px;
  padding: 30px 24px;
  text-align: center;
  border: 1px solid #e0e9ff;
  transition: all 0.3s ease;
}
.tech-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.09);
  border-color: #bfdbfe;
}
.tech-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff;
  font-size: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.tech-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 10px;
}
.tech-card p {
  font-size: 13px;
  color: #64748b;
  line-height: 1.6;
}

@media (max-width:1024px) {
  .tech-grid {
    grid-template-columns: repeat(2,1fr);
  }
}
@media (max-width:768px) {
  .tech-grid {
    grid-template-columns: 1fr;
  }
}
/* 标题通用 */
.section-title {
  text-align: center;
  margin-bottom: 60px;
}
.section-title h3 {
  font-size: 14px;
  color: #6366f1;
  margin-bottom: 8px;
  font-weight: 500;
}
.section-title h2 {
  font-size: 32px;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 12px;
}
.section-title h2 span {
  color: #6366f1;
}
.section-title p {
  font-size: 15px;
  color: #6b7280;
  max-width: 600px;
  margin: 0 auto;
}

/* -------------------- 痛点板块 -------------------- */
.section-pain {
  padding: 90px 0;
  background: #fff;
}
.pain-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.pain-box {
  background: #fafbff;
  border-radius: 20px;
  padding: 36px 32px;
  border: 1px solid #e0e7ff;
  position: relative;
  transition: all 0.3s ease;
}
.pain-box:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(99, 102, 241, 0.08);
  border-color: #c7d2fe;
}
.pain-num {
    position: absolute;
    top: 24px;
    right: 28px;
    font-size: 88px;
    font-weight: 900;
    color: #ff05051c;
    z-index: 0;
}
.pain-box h4 {
  font-size: 18px;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.pain-box p {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

/* -------------------- 解决方案 -------------------- */
.section-solve {
  padding: 90px 0;
  background: #f6f8ff;
}
.solve-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.solve-card {
  background: #fff;
  border-radius: 20px;
  padding: 40px 28px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}
.solve-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 30px rgba(99, 102, 241, 0.1);
  border-color: #c7d2fe;
}
.solve-card i {
   width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, #7c3aed, #0066ff);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin-bottom: 20px;
}
.solve-card h4 {
  font-size: 18px;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 10px;
}
.solve-card p {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.65;
}

/* -------------------- 适用行业 -------------------- */
/* 适用行业 */
.section-industry {
  padding: 90px 0;
  background: #fff;
}
.industry-group {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 16px;
  position: relative;
}
/* 折叠容器默认隐藏 */
.industry-more-wrap {
  display: none;
  grid-column: 1 / -1;
  grid-template-columns: repeat(8, 1fr);
  gap: 16px;
}
/* 展开后显示 */
.industry-more-wrap.active {
  display: grid;
}

.industry-card {
  aspect-ratio: 1/1;
  background: #f8fafc;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid #e2e8f0;
  transition: all 0.3s ease;
  padding: 10px;
}
.industry-card i {
  font-size: 26px;
  color: #0066ff;
  margin-bottom: 6px;
  transition: 0.2s;
}
.industry-card h5 {
  font-size: 13px;
  font-weight: 500;
  color: #374151;
  text-align: center;
  line-height: 1.3;
}
.industry-card:hover {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(99, 102,241, 0.12);
}
.industry-card:hover i,
.industry-card:hover h5 {
  color: #fff;
}

/* 加载更多按钮样式 */
.industry-more-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 180px;
  height: 44px;
  line-height: 44px;
  text-align: center;
  border: 1px solid #6366f1;
  color: #6366f1;
  border-radius: 50px;
  margin: 40px auto 0;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
}
.industry-more-btn:hover {
  background: #6366f1;
  color: #fff;
}

/* 响应式 */
@media (max-width: 1200px) {
  .industry-group,
  .industry-more-wrap {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media (max-width: 768px) {
  .industry-group,
  .industry-more-wrap {
    grid-template-columns: repeat(2, 1fr);
  }
}
/* -------------------- 响应式 -------------------- */
@media (max-width: 1024px) {
  .solve-group {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .pain-group {
    grid-template-columns: 1fr;
  }
  .solve-group {
    grid-template-columns: 1fr;
  }
  .section-title h2 {
    font-size: 26px;
  }
}