/* ========================================
   用友 YonBIP 详情页专属样式
   布局/动效复刻自参考页，蓝青渐变重映射为网站青蓝商务科技风
   仅作用于 yonbip.html，类名加 bip- 前缀避免冲突
   ======================================== */

:root {
  /* 配色：参考页蓝青 → 网站青蓝（与 YonSuite / U9 一致） */
  --bip-primary: #15B0ED;          /* 主色青蓝（网站 logo 色） */
  --bip-primary-light: #3ec3f0;
  --bip-primary-dark: #0E8FC0;     /* 主色加深 */
  --bip-accent: #0891b2;           /* 辅助青 */
  --bip-accent-light: #06b6d4;

  /* 渐变：青蓝双向（原蓝→青） */
  --bip-gradient-1: linear-gradient(135deg, #15B0ED 0%, #0891b2 100%);
  --bip-gradient-2: linear-gradient(135deg, #0E8FC0 0%, #0891b2 100%);
  --bip-gradient-3: linear-gradient(135deg, #15B0ED 0%, #3ec3f0 50%, #06b6d4 100%);

  /* service-layer / paas 四色收敛为青蓝色系 */
  --bip-c1: #15B0ED;
  --bip-c2: #0E8FC0;
  --bip-c3: #0891b2;
  --bip-c4: #0F7490;

  --bip-text-primary: #0F2F3F;     /* 深青蓝标题（与全局一致） */
  --bip-text-secondary: #4a4f66;
  --bip-text-light: #8a8fa0;
  --bip-bg-white: #ffffff;
  --bip-bg-light: #fafbfc;
  --bip-bg-section: #f1f9fe;       /* 浅青底（原蓝调改青蓝） */
  --bip-border-light: #e2e8f0;

  --bip-shadow-sm: 0 1px 3px rgba(15, 47, 63, 0.06);
  --bip-shadow-md: 0 4px 14px rgba(21, 176, 237, 0.08);
  --bip-shadow-lg: 0 12px 40px rgba(21, 176, 237, 0.12);
  --bip-shadow-glow: 0 0 30px rgba(21, 176, 237, 0.15);
}

/* ===== 布局 ===== */
.bip-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.bip-section { padding: 80px 0; position: relative; margin-top: var(--header-height, 76px); }
.bip-section:first-of-type { margin-top: 0; }
.bip-section-alt { padding: 80px 0; background: var(--bip-bg-section); position: relative; margin-top: var(--header-height, 76px); }

/* ===== 滚动渐入 ===== */
.bip-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1);
}
.bip-reveal.active { opacity: 1; transform: translateY(0); }

/* ===== 区块标题 ===== */
.bip-section-header { text-align: center; margin-bottom: 56px; }
.bip-section-number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--bip-gradient-1); color: #fff;
  font-weight: 700; font-size: 14px;
  margin-bottom: 16px;
}
.bip-section-tag {
  display: inline-block;
  font-size: 12px; font-weight: 700; letter-spacing: 2px;
  color: var(--bip-primary-dark); text-transform: uppercase;
  margin-bottom: 12px;
  background: rgba(21, 176, 237, 0.06);
  padding: 4px 14px; border-radius: 6px;
}
.bip-section-title {
  font-size: 36px; font-weight: 800; line-height: 1.3;
  color: var(--bip-text-primary); margin-bottom: 16px;
}
.bip-section-title .bip-gradient-text {
  background: var(--bip-gradient-1);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.bip-section-desc { font-size: 16px; color: var(--bip-text-secondary); max-width: 700px; margin: 0 auto; }

/* ===== 滚动进度条 ===== */
.bip-scroll-progress {
  position: fixed; top: var(--header-height, 76px); left: 0; right: 0;
  height: 2px; z-index: 999; background: transparent;
}
.bip-scroll-progress-bar { height: 100%; width: 0%; background: var(--bip-gradient-1); transition: width 0.1s linear; }

/* ===== HERO ===== */
.bip-hero {
  position: relative;
  min-height: calc(100vh - var(--header-height, 76px));
  display: flex; align-items: center; justify-content: center;
  background: #fff;
  overflow: hidden;
  margin-top: var(--header-height, 76px);
}
.bip-hero-grid {
  position: absolute; bottom: -60px; left: 50%; z-index: 0;
  transform: translateX(-50%) perspective(600px) rotateX(62deg);
  width: 200%; height: 720px;
  background-image: linear-gradient(rgba(21, 176, 237, 0.28) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(21, 176, 237, 0.28) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(to top, #000 0%, rgba(0,0,0,0.5) 40%, transparent 85%);
  mask-image: linear-gradient(to top, #000 0%, rgba(0,0,0,0.5) 40%, transparent 85%);
  animation: bip-gridScroll 24s linear infinite;
}
@keyframes bip-gridScroll { to { background-position: 0 56px; } }
.bip-hero-content { position: relative; z-index: 2; text-align: center; padding: 60px 24px 70px; max-width: 1080px; }
.bip-hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bip-bg-section);
  border: 1px solid rgba(21, 176, 237, 0.12);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 13px; font-weight: 600; color: var(--bip-primary-dark);
  margin-bottom: 28px;
  animation: bip-fadeInDown 0.8s ease-out;
}
.bip-hero-badge .pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--bip-primary); animation: bip-pulse 2s ease-in-out infinite; }
.bip-hero-title {
  font-size: 46px; font-weight: 800; line-height: 1.15;
  color: var(--bip-text-primary); margin-bottom: 24px;
  animation: bip-fadeInUp 1s ease-out;
}
.bip-hero-title .bip-gradient-text {
  background: var(--bip-gradient-3);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
/* 「用友」红 + 英文产品名深灰，与 YonSuite hero 一致 */
.bip-hero-red { color: #DC2626; }
.bip-hero-gray { color: #475569; }
.bip-hero-subtitle { font-size: 20px; line-height: 1.6; color: var(--bip-text-secondary); margin-bottom: 20px; animation: bip-fadeInUp 1s ease-out 0.2s both; }
.bip-hero-desc { font-size: 16px; line-height: 1.8; color: var(--bip-text-light); max-width: 700px; margin: 0 auto 40px; animation: bip-fadeInUp 1s ease-out 0.4s both; }
.bip-hero-actions { display: flex; gap: 16px; justify-content: center; animation: bip-fadeInUp 1s ease-out 0.6s both; flex-wrap: wrap; }
.bip-btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 12px;
  background: var(--bip-gradient-1); color: #fff;
  font-weight: 600; font-size: 15px;
  border: none; cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative; overflow: hidden;
  text-decoration: none;
}
.bip-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(21, 176, 237, 0.3); }
.bip-btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 12px;
  background: rgba(21, 176, 237, 0.06); color: var(--bip-primary-dark);
  font-weight: 600; font-size: 15px;
  border: 1px solid rgba(21, 176, 237, 0.12); cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}
.bip-btn-secondary:hover { background: rgba(21, 176, 237, 0.1); border-color: rgba(21, 176, 237, 0.25); transform: translateY(-2px); }
.bip-hero-stats { display: flex; justify-content: center; gap: 48px; margin-top: 48px; animation: bip-fadeInUp 1s ease-out 0.8s both; flex-wrap: wrap; }
.bip-hero-stat { text-align: center; }
.bip-hero-stat-value {
  font-size: 32px; font-weight: 800; color: var(--bip-primary-dark);
  display: flex; align-items: baseline; justify-content: center;
}
.bip-hero-stat-value .bip-counter { display: inline-block; }
.bip-hero-stat-unit { font-size: 16px; font-weight: 600; margin-left: 2px; }
.bip-hero-stat-label { font-size: 13px; color: var(--bip-text-light); margin-top: 4px; }

/* ===== 核心定位 (1) ===== */
.bip-positioning-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.bip-positioning-card {
  background: #fff; border: 1px solid var(--bip-border-light); border-radius: 16px;
  padding: 32px; transition: all 0.4s cubic-bezier(0.16,1,0.3,1);
  position: relative; overflow: hidden;
}
.bip-positioning-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 4px; background: var(--bip-gradient-1);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.16,1,0.3,1);
}
.bip-positioning-card:hover { transform: translateY(-4px); box-shadow: var(--bip-shadow-lg); border-color: rgba(21, 176, 237, 0.15); }
.bip-positioning-card:hover::before { transform: scaleX(1); }
.bip-positioning-card-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: rgba(21, 176, 237, 0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px;
  transition: background 0.3s;
}
.bip-positioning-card:hover .bip-positioning-card-icon { background: var(--bip-gradient-1); color: #fff; }
.bip-positioning-card-title { font-size: 18px; font-weight: 700; color: var(--bip-text-primary); margin-bottom: 12px; }
.bip-positioning-card-text { font-size: 14px; line-height: 1.8; color: var(--bip-text-secondary); }
.bip-positioning-card-text strong { color: var(--bip-primary-dark); }

/* ===== 八大特性 (2) ===== */
.bip-features-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 16px; }
.bip-feature-item {
  background: #fff; border: 1px solid var(--bip-border-light); border-radius: 14px;
  padding: 24px 12px; text-align: center;
  transition: all 0.4s cubic-bezier(0.16,1,0.3,1);
  position: relative; overflow: hidden;
}
.bip-feature-item::after {
  content: ''; position: absolute; bottom: 0; left: 50%;
  width: 40px; height: 3px; border-radius: 3px;
  background: var(--bip-gradient-1);
  transform: translateX(-50%) scaleX(0);
  transition: transform 0.4s;
}
.bip-feature-item:hover { transform: translateY(-6px); box-shadow: var(--bip-shadow-lg); border-color: rgba(21, 176, 237, 0.15); }
.bip-feature-item:hover::after { transform: translateX(-50%) scaleX(1); }
.bip-feature-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: rgba(21, 176, 237, 0.06);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px; font-size: 22px;
  transition: all 0.4s;
}
.bip-feature-item:hover .bip-feature-icon { background: var(--bip-gradient-1); color: #fff; transform: scale(1.1); }
.bip-feature-name { font-size: 15px; font-weight: 700; color: var(--bip-text-primary); white-space: nowrap; }

/* ===== 技术架构 (3) ===== */
.bip-tech-arch-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.bip-tech-card {
  background: #fff; border: 1px solid var(--bip-border-light); border-radius: 16px;
  padding: 32px; position: relative; overflow: hidden;
  transition: all 0.4s;
}
.bip-tech-card:hover { transform: translateY(-4px); box-shadow: var(--bip-shadow-lg); border-color: rgba(21, 176, 237, 0.15); }
.bip-tech-card-bg-icon { position: absolute; top: -10px; right: -10px; font-size: 80px; opacity: 0.04; transition: opacity 0.3s; color: var(--bip-primary); }
.bip-tech-card:hover .bip-tech-card-bg-icon { opacity: 0.08; }
.bip-tech-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.bip-tech-card-badge { display: inline-flex; padding: 4px 12px; border-radius: 6px; background: var(--bip-gradient-1); color: #fff; font-size: 12px; font-weight: 700; }
.bip-tech-card-title { font-size: 20px; font-weight: 700; color: var(--bip-text-primary); }
.bip-tech-card-desc { font-size: 14px; line-height: 1.8; color: var(--bip-text-secondary); margin-bottom: 16px; }
.bip-tech-card-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.bip-tech-tag {
  padding: 4px 12px; border-radius: 6px;
  background: rgba(21, 176, 237, 0.06);
  color: var(--bip-primary-dark); font-size: 12px; font-weight: 600;
  transition: all 0.3s;
}
.bip-tech-tag:hover { background: rgba(21, 176, 237, 0.12); }

/* ===== 服务体系 (4) ===== */
.bip-service-layers { display: flex; flex-direction: column; gap: 16px; position: relative; }
.bip-service-layer-connector { position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; background: var(--bip-gradient-1); opacity: 0.15; z-index: 0; }
.bip-service-layer {
  display: flex; align-items: stretch; gap: 24px;
  background: #fff; border: 1px solid var(--bip-border-light); border-radius: 16px;
  padding: 28px 32px; position: relative; z-index: 1;
  transition: all 0.4s; overflow: hidden;
}
.bip-service-layer::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px; border-radius: 4px 0 0 4px;
  transition: transform 0.4s; transform: scaleY(0);
}
.bip-service-layer:hover { transform: translateX(6px); box-shadow: var(--bip-shadow-lg); border-color: rgba(21, 176, 237, 0.15); }
.bip-service-layer:hover::before { transform: scaleY(1); }
/* 四色收敛为青蓝色系 */
.bip-service-layer.paas::before { background: var(--bip-c1); }
.bip-service-layer.baas::before { background: var(--bip-c2); }
.bip-service-layer.saas::before { background: var(--bip-c3); }
.bip-service-layer.daas::before { background: var(--bip-c4); }
.bip-service-layer-type {
  display: flex; align-items: center; justify-content: center;
  min-width: 80px; padding: 12px; border-radius: 12px;
  font-weight: 800; font-size: 18px; color: #fff;
}
.bip-service-layer.paas .bip-service-layer-type { background: var(--bip-c1); }
.bip-service-layer.baas .bip-service-layer-type { background: var(--bip-c2); }
.bip-service-layer.saas .bip-service-layer-type { background: var(--bip-c3); }
.bip-service-layer.daas .bip-service-layer-type { background: var(--bip-c4); }
.bip-service-layer-content { flex: 1; }
.bip-service-layer-title { font-size: 18px; font-weight: 700; color: var(--bip-text-primary); margin-bottom: 8px; }
.bip-service-layer-desc { font-size: 14px; color: var(--bip-text-secondary); line-height: 1.7; }
.bip-service-layer-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

/* ===== PaaS 平台 (5) ===== */
.bip-paas-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.bip-paas-card {
  background: #fff; border: 1px solid var(--bip-border-light); border-radius: 16px;
  padding: 32px; position: relative; overflow: hidden;
  transition: all 0.4s;
}
.bip-paas-card:hover { transform: translateY(-4px); box-shadow: var(--bip-shadow-lg); border-color: rgba(21, 176, 237, 0.15); }
.bip-paas-card-accent { position: absolute; top: 0; right: 0; width: 80px; height: 80px; border-radius: 0 16px 0 80px; opacity: 0.06; }
.bip-paas-card:nth-child(1) .bip-paas-card-accent { background: var(--bip-c1); }
.bip-paas-card:nth-child(2) .bip-paas-card-accent { background: var(--bip-c2); }
.bip-paas-card:nth-child(3) .bip-paas-card-accent { background: var(--bip-c3); }
.bip-paas-card:nth-child(4) .bip-paas-card-accent { background: var(--bip-c4); }
.bip-paas-card-header { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.bip-paas-card-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; color: #fff; }
.bip-paas-card:nth-child(1) .bip-paas-card-icon { background: var(--bip-c1); }
.bip-paas-card:nth-child(2) .bip-paas-card-icon { background: var(--bip-c2); }
.bip-paas-card:nth-child(3) .bip-paas-card-icon { background: var(--bip-c3); }
.bip-paas-card:nth-child(4) .bip-paas-card-icon { background: var(--bip-c4); }
.bip-paas-card-title { font-size: 18px; font-weight: 700; color: var(--bip-text-primary); }
.bip-paas-card-desc { font-size: 14px; line-height: 1.8; color: var(--bip-text-secondary); margin-bottom: 16px; }
.bip-paas-capability-list { display: flex; flex-wrap: wrap; gap: 8px; }
.bip-paas-capability {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 6px 14px; border-radius: 8px;
  background: rgba(21, 176, 237, 0.06);
  color: var(--bip-primary-dark); font-size: 13px; font-weight: 600;
  transition: all 0.3s;
}
.bip-paas-capability:hover { background: rgba(21, 176, 237, 0.12); transform: scale(1.05); }

/* ===== SaaS 云 (6) ===== */
/* 8 个云一排横排紧凑布局，避免卡片空旷 */
.bip-saas-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 12px; }
.bip-saas-item {
  background: #fff; border: 1px solid var(--bip-border-light); border-radius: 14px;
  padding: 24px 8px; text-align: center;
  transition: all 0.4s; position: relative; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.bip-saas-item::before { content: ''; position: absolute; inset: 0; background: var(--bip-gradient-1); opacity: 0; transition: opacity 0.4s; }
.bip-saas-item:hover { transform: translateY(-6px) scale(1.03); box-shadow: var(--bip-shadow-lg); border-color: rgba(21, 176, 237, 0.2); }
.bip-saas-item:hover::before { opacity: 0.03; }
.bip-saas-item-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: rgba(21, 176, 237, 0.06);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin: 0 auto 12px;
  transition: all 0.4s;
  position: relative; z-index: 1;
}
.bip-saas-item:hover .bip-saas-item-icon { background: var(--bip-gradient-1); color: #fff; transform: rotateY(10deg) scale(1.1); }
.bip-saas-item-name {
  font-size: 14px; font-weight: 700; color: var(--bip-text-primary);
  position: relative; z-index: 1;
  white-space: nowrap;
}
.bip-saas-extra {
  grid-column: 1 / -1; text-align: center; padding: 20px;
  background: var(--bip-bg-section); border: 1px dashed rgba(21, 176, 237, 0.15);
  border-radius: 14px; font-size: 14px; color: var(--bip-text-secondary); margin-top: 8px;
}

/* ===== 生态体系 (7) ===== */
.bip-eco-container { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.bip-eco-block {
  background: #fff; border: 1px solid var(--bip-border-light); border-radius: 16px;
  padding: 32px; transition: all 0.4s;
}
.bip-eco-block:hover { transform: translateY(-4px); box-shadow: var(--bip-shadow-lg); border-color: rgba(21, 176, 237, 0.15); }
.bip-eco-block-title { font-size: 18px; font-weight: 700; color: var(--bip-text-primary); margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.bip-eco-block-title-icon {
  width: 36px; height: 36px; border-radius: 10px; background: var(--bip-gradient-1);
  display: flex; align-items: center; justify-content: center; font-size: 16px; color: #fff;
}
.bip-eco-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; border-radius: 10px;
  background: rgba(21, 176, 237, 0.04); margin-bottom: 8px;
  transition: all 0.3s;
}
.bip-eco-item:hover { background: rgba(21, 176, 237, 0.08); transform: translateX(4px); }
.bip-eco-item:last-child { margin-bottom: 0; }
.bip-eco-item-icon {
  width: 32px; height: 32px; border-radius: 8px;
  background: rgba(21, 176, 237, 0.1);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: var(--bip-primary-dark);
}
.bip-eco-item-name { font-size: 14px; font-weight: 600; color: var(--bip-text-primary); }
.bip-eco-item-desc { font-size: 12px; color: var(--bip-text-light); }

/* ===== 核心优势 (8) ===== */
.bip-advantages-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.bip-advantage-card {
  background: #fff; border: 1px solid var(--bip-border-light); border-radius: 16px;
  padding: 32px; transition: all 0.4s;
  position: relative; overflow: hidden;
}
.bip-advantage-card:hover { transform: translateY(-4px); box-shadow: var(--bip-shadow-lg); border-color: rgba(21, 176, 237, 0.15); }
.bip-advantage-number { position: absolute; top: 16px; right: 20px; font-size: 48px; font-weight: 900; opacity: 0.04; color: var(--bip-primary); transition: opacity 0.3s; }
.bip-advantage-card:hover .bip-advantage-number { opacity: 0.08; }
.bip-advantage-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--bip-gradient-1);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: #fff; margin-bottom: 16px;
}
.bip-advantage-title { font-size: 18px; font-weight: 700; color: var(--bip-text-primary); margin-bottom: 10px; }
.bip-advantage-desc { font-size: 14px; line-height: 1.8; color: var(--bip-text-secondary); }

/* ===== CTA（接网站联系体系） ===== */
.bip-cta {
  text-align: center; padding: 80px 24px;
  background: linear-gradient(180deg, var(--bip-bg-light) 0%, #e8f7fe 50%, var(--bip-bg-light) 100%);
  position: relative;
}
.bip-cta h2 { font-size: 36px; font-weight: 800; margin-bottom: 16px; color: var(--bip-text-primary); }
.bip-cta h2 .bip-gradient-text { background: var(--bip-gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.bip-cta p { font-size: 16px; color: var(--bip-text-light); margin-bottom: 32px; max-width: 640px; margin-left: auto; margin-right: auto; line-height: 1.8; }
.bip-cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== 技术线装饰 ===== */
.bip-tech-line { position: relative; }
.bip-tech-line::before {
  content: ''; position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--bip-primary), transparent);
  opacity: 0.1;
}

/* ===== 动效 ===== */
@keyframes bip-fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes bip-fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes bip-pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.5); } }
@keyframes bip-shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .bip-features-grid { grid-template-columns: repeat(4, 1fr); }
  .bip-saas-grid { grid-template-columns: repeat(4, 1fr); }
  .bip-positioning-grid { grid-template-columns: 1fr; }
  .bip-tech-arch-grid { grid-template-columns: 1fr; }
  .bip-paas-grid { grid-template-columns: 1fr; }
  .bip-eco-container { grid-template-columns: 1fr; }
  .bip-advantages-grid { grid-template-columns: 1fr; }
  .bip-hero-title { font-size: 36px; }
}
@media (max-width: 767px) {
  .bip-hero-title { font-size: 28px; }
  .bip-hero-stats { gap: 24px; }
  .bip-section, .bip-section-alt { padding: 60px 0; }
  .bip-section-title { font-size: 28px; }
  .bip-service-layer { flex-direction: column; }
  .bip-hero-actions { flex-direction: column; align-items: stretch; }
  .bip-features-grid { grid-template-columns: repeat(2, 1fr); }
}