/* ========================================
   用友 YonSuite 详情页专属样式
   布局/动效复刻自参考页，配色重映射为网站青蓝商务科技风
   仅作用于 yonsuite.html，不污染全局 style.css
   类名加 ys- 前缀避免与全局冲突
   ======================================== */

:root {
  /* 配色：参考页紫蓝多彩 → 网站青蓝商务（单一色系，克制稳重） */
  --ys-accent: #15B0ED;            /* 主色青蓝（网站 logo 色） */
  --ys-accent-dark: #0E8FC0;       /* 主色加深 */
  --ys-accent-deep: #0F2F3F;       /* 深青蓝（标题） */
  --ys-accent-2: #0891b2;          /* 辅助青（替代原绿/粉多彩） */

  --ys-bg: #ffffff;
  --ys-bg-2: #f7fbfd;              /* 浅青底（原 F7F8FC 微调暖向冷） */
  --ys-card: #ffffff;
  --ys-card-hover: #f1f9fe;        /* 卡片 hover（青蓝调） */

  --ys-border: #e2e8f0;            /* 与全局一致 */
  --ys-border-hover: #15B0ED;      /* hover 边框统一主色（原紫） */

  --ys-text: #5F5D5D;              /* 与全局正文灰一致 */
  --ys-text-dim: #7a7878;          /* 与全局浅灰一致 */
  --ys-text-heading: #0F2F3F;      /* 深青蓝标题（与全局一致） */

  /* 渐变：统一青蓝双向，商务稳重（原紫→蓝多彩） */
  --ys-gradient: linear-gradient(135deg, #15B0ED 0%, #0E8FC0 100%);
  --ys-gradient-soft: linear-gradient(135deg, #0891b2 0%, #0E8FC0 100%);

  /* 阴影：青蓝色调（与全局 shadow 体系一致） */
  --ys-shadow-sm: 0 1px 3px rgba(15, 47, 63, 0.05), 0 1px 2px rgba(15, 47, 63, 0.06);
  --ys-shadow-md: 0 4px 16px rgba(21, 176, 237, 0.08), 0 2px 6px rgba(15, 47, 63, 0.04);
  --ys-shadow-lg: 0 12px 32px rgba(21, 176, 237, 0.12), 0 4px 12px rgba(15, 47, 63, 0.05);
}

/* ===== Hero ===== */
.ys-hero {
  min-height: calc(100vh - var(--header-height, 76px));
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 48px 70px;
  overflow: hidden;
  margin-top: var(--header-height, 76px); /* 留出网站主 header */
}
.ys-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: radial-gradient(ellipse 80% 60% at 20% 20%, rgba(21, 176, 237, 0.07) 0%, transparent 55%),
              radial-gradient(ellipse 60% 40% at 80% 80%, rgba(14, 143, 192, 0.05) 0%, transparent 55%),
              radial-gradient(ellipse 50% 30% at 50% 50%, rgba(8, 145, 178, 0.03) 0%, transparent 55%);
}
.ys-hero-grid {
  position: absolute;
  bottom: -60px;
  left: 50%;
  transform: translateX(-50%) perspective(600px) rotateX(62deg);
  width: 200%;
  height: 720px;
  z-index: 0;
  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: ys-gridScroll 24s linear infinite;
}
@keyframes ys-gridScroll { to { background-position: 0 56px; } }

.ys-hero-content { position: relative; z-index: 1; max-width: 900px; }
.ys-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(21, 176, 237, 0.08);
  border: 1px solid rgba(21, 176, 237, 0.2);
  font-size: 0.85rem;
  color: var(--ys-accent-dark);
  margin-bottom: 28px;
  animation: ys-fadeUp 0.8s ease both;
}
.ys-hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ys-accent);
  box-shadow: 0 0 8px rgba(21, 176, 237, 0.5);
  animation: ys-pulse 2s infinite;
}
.ys-hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  color: var(--ys-text-heading);
  animation: ys-fadeUp 0.8s ease 0.1s both;
}
.ys-hero-red { color: #DC2626; }       /* 「用友」红保留品牌识别 */
.ys-hero-gray { color: #475569; }
.ys-hero h1 .ys-grad {
  background: var(--ys-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ys-hero-sub {
  font-size: 1.25rem;
  color: var(--ys-text-dim);
  max-width: 700px;
  margin: 0 auto 40px;
  animation: ys-fadeUp 0.8s ease 0.2s both;
}
.ys-hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  animation: ys-fadeUp 0.8s ease 0.3s both;
}
.ys-btn-primary {
  padding: 14px 36px;
  border-radius: 12px;
  background: var(--ys-gradient);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 24px rgba(21, 176, 237, 0.28);
  display: inline-block;
}
.ys-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(21, 176, 237, 0.42);
}
.ys-btn-ghost {
  padding: 14px 36px;
  border-radius: 12px;
  background: transparent;
  border: 1.5px solid #CBD5E1;
  color: var(--ys-text-heading);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s;
  display: inline-block;
}
.ys-btn-ghost:hover {
  border-color: var(--ys-accent);
  background: rgba(21, 176, 237, 0.04);
  color: var(--ys-accent-dark);
}
.ys-hero-stats {
  display: flex;
  gap: 56px;
  margin-top: 64px;
  animation: ys-fadeUp 0.8s ease 0.4s both;
}
.ys-hero-stat { text-align: center; }
.ys-hero-stat .num {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--ys-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ys-hero-stat .label { font-size: 0.85rem; color: var(--ys-text-dim); margin-top: 4px; }

/* ===== Section 通用 ===== */
.ys-section { padding: 100px 48px; position: relative; }
.ys-section-header { text-align: center; max-width: 700px; margin: 0 auto 64px; }
.ys-section-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: rgba(21, 176, 237, 0.06);
  border: 1px solid rgba(21, 176, 237, 0.15);
  color: var(--ys-accent-dark);
  margin-bottom: 16px;
}
.ys-section-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--ys-text-heading);
}
.ys-section-title .ys-grad {
  background: var(--ys-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ys-section-desc { font-size: 1.05rem; color: var(--ys-text-dim); }

/* ===== 十大云 ===== */
.ys-clouds-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
}
.ys-cloud-card {
  background: var(--ys-card);
  border: 1px solid var(--ys-border);
  border-radius: 16px;
  padding: 32px 20px;
  text-align: center;
  box-shadow: var(--ys-shadow-sm);
  transition: all 0.3s ease;
  cursor: default;
  position: relative;
  overflow: hidden;
}
.ys-cloud-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--ys-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}
.ys-cloud-card:hover::before { transform: scaleX(1); }
.ys-cloud-card:hover {
  background: var(--ys-card-hover);
  border-color: var(--ys-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--ys-shadow-lg);
}
.ys-cloud-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: rgba(21, 176, 237, 0.06);
  border: 1px solid rgba(21, 176, 237, 0.12);
}
.ys-cloud-card:hover .ys-cloud-icon { background: rgba(21, 176, 237, 0.12); }
.ys-cloud-name { font-size: 1rem; font-weight: 700; color: var(--ys-text-heading); margin-bottom: 6px; }
.ys-cloud-desc { font-size: 0.8rem; color: var(--ys-text-dim); }

.ys-cloud-services-bar {
  max-width: 1200px;
  margin: 32px auto 0;
  padding: 24px 32px;
  background: #f8fbfd;
  border: 1px solid var(--ys-border);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.ys-cloud-services-bar .label { font-size: 0.9rem; color: var(--ys-text-dim); }
.ys-cloud-services-bar .tags { display: flex; gap: 12px; flex-wrap: wrap; }
.ys-cloud-services-bar .tag {
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 0.85rem;
  background: rgba(8, 145, 178, 0.06);
  border: 1px solid rgba(8, 145, 178, 0.15);
  color: var(--ys-accent-2);
}

/* ===== AI 四维模型 ===== */
.ys-ai-section {
  background: linear-gradient(180deg, transparent 0%, rgba(21, 176, 237, 0.025) 50%, transparent 100%);
}
.ys-ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.ys-ai-card {
  background: var(--ys-card);
  border: 1px solid var(--ys-border);
  border-radius: 20px;
  padding: 40px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--ys-shadow-sm);
  transition: all 0.3s ease;
}
.ys-ai-card::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.05;
  transition: opacity 0.3s;
  background: var(--ys-accent); /* 统一青蓝光晕（原四色） */
}
.ys-ai-card:hover::after { opacity: 0.09; }
.ys-ai-card:hover {
  border-color: var(--ys-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--ys-shadow-lg);
}
.ys-ai-num {
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 4rem;
  font-weight: 900;
  color: rgba(15, 47, 63, 0.04);
  line-height: 1;
}
.ys-ai-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  border: 1px solid rgba(21, 176, 237, 0.18);
  background: rgba(21, 176, 237, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}
.ys-ai-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 12px; color: var(--ys-text-heading); }
.ys-ai-desc { font-size: 0.95rem; color: var(--ys-text-dim); margin-bottom: 20px; }
.ys-ai-features { display: flex; gap: 8px; flex-wrap: wrap; }
.ys-ai-feature {
  padding: 4px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  background: #f1f5f9;
  border: 1px solid #e4e7ee;
  color: var(--ys-text-dim);
}
.ys-ai-capabilities {
  max-width: 1200px;
  margin: 48px auto 0;
  padding: 32px;
  background: #f8fbfd;
  border: 1px solid var(--ys-border);
  border-radius: 20px;
}
.ys-ai-capabilities-title {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--ys-accent-dark);
}
.ys-ai-capabilities-tags { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.ys-ai-cap-tag {
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
  background: rgba(21, 176, 237, 0.05);
  border: 1px solid rgba(21, 176, 237, 0.12);
  color: #475569;
  transition: all 0.2s;
}
.ys-ai-cap-tag:hover {
  background: rgba(21, 176, 237, 0.12);
  color: var(--ys-accent-dark);
  transform: translateY(-1px);
}

/* ===== 技术架构 ===== */
.ys-tech-arch {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.ys-tech-layer {
  background: var(--ys-card);
  border: 1px solid var(--ys-border);
  border-radius: 16px;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  box-shadow: var(--ys-shadow-sm);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.ys-tech-layer:hover {
  border-color: var(--ys-border-hover);
  background: var(--ys-card-hover);
  box-shadow: var(--ys-shadow-md);
}
.ys-tech-layer-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: rgba(21, 176, 237, 0.08);
  border: 1px solid rgba(21, 176, 237, 0.18);
}
.ys-tech-layer-content { flex: 1; }
.ys-tech-layer-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; color: var(--ys-text-heading); }
.ys-tech-layer-desc { font-size: 0.9rem; color: var(--ys-text-dim); }
.ys-tech-layer-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.ys-tech-layer-tag {
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  background: #f1f5f9;
  color: var(--ys-text-dim);
}
.ys-tech-connector {
  width: 2px;
  height: 20px;
  margin: -8px auto;
  background: var(--ys-gradient);
  opacity: 0.3;
}

/* ===== 开放生态 ===== */
.ys-eco-section {
  background: linear-gradient(180deg, transparent 0%, rgba(8, 145, 178, 0.025) 50%, transparent 100%);
}
.ys-eco-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.ys-eco-card {
  background: var(--ys-card);
  border: 1px solid var(--ys-border);
  border-radius: 20px;
  padding: 40px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--ys-shadow-sm);
  transition: all 0.3s;
}
.ys-eco-card:hover {
  border-color: var(--ys-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--ys-shadow-lg);
}
.ys-eco-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: rgba(8, 145, 178, 0.06);
  border: 1px solid rgba(8, 145, 178, 0.12);
}
.ys-eco-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; color: var(--ys-text-heading); }
.ys-eco-desc { font-size: 0.9rem; color: var(--ys-text-dim); margin-bottom: 20px; }
.ys-eco-items { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.ys-eco-item {
  padding: 4px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  background: #f1f5f9;
  border: 1px solid #e4e7ee;
  color: var(--ys-text-dim);
}

/* ===== 数智飞轮 ===== */
.ys-flywheel-section { text-align: center; }
.ys-flywheel-wrap {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 60px;
}
.ys-flywheel-visual { width: 320px; height: 320px; position: relative; flex-shrink: 0; }
.ys-flywheel-ring { position: absolute; border-radius: 50%; border: 2px solid; }
.ys-flywheel-ring-1 { inset: 0; border-color: rgba(21, 176, 237, 0.14); }
.ys-flywheel-ring-2 { inset: 30px; border-color: rgba(14, 143, 192, 0.14); }
.ys-flywheel-ring-3 { inset: 60px; border-color: rgba(8, 145, 178, 0.14); }
.ys-flywheel-ring-outer {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--ys-accent);
  border-right-color: var(--ys-accent-dark);
  animation: ys-spin 8s linear infinite;
}
.ys-flywheel-ring-middle {
  position: absolute;
  inset: 20px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-bottom-color: var(--ys-accent-2);
  border-left-color: var(--ys-accent-dark);
  animation: ys-spin 6s linear infinite reverse;
}
.ys-flywheel-ring-inner {
  position: absolute;
  inset: 50px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--ys-accent-2);
  animation: ys-spin 4s linear infinite;
}
.ys-flywheel-center {
  position: absolute;
  inset: 80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21, 176, 237, 0.1) 0%, rgba(14, 143, 192, 0.05) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(21, 176, 237, 0.14);
}
.ys-flywheel-center .num {
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--ys-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ys-flywheel-center .label { font-size: 0.8rem; color: var(--ys-text-dim); margin-top: 4px; }
@keyframes ys-spin { to { transform: rotate(360deg); } }

.ys-flywheel-nodes { position: absolute; inset: 0; pointer-events: none; }
.ys-flywheel-node {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ys-accent);
  box-shadow: 0 0 12px var(--ys-accent);
}
.ys-flywheel-node:nth-child(1) { top: 0; left: 50%; transform: translateX(-50%); }
.ys-flywheel-node:nth-child(2) { top: 50%; right: 0; transform: translateY(-50%); background: var(--ys-accent-dark); box-shadow: 0 0 12px var(--ys-accent-dark); }
.ys-flywheel-node:nth-child(3) { bottom: 0; left: 50%; transform: translateX(-50%); background: var(--ys-accent-2); box-shadow: 0 0 12px var(--ys-accent-2); }
.ys-flywheel-node:nth-child(4) { top: 50%; left: 0; transform: translateY(-50%); background: var(--ys-accent); box-shadow: 0 0 12px var(--ys-accent); }

.ys-flywheel-info { flex: 1; text-align: left; }
.ys-flywheel-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 32px; }
.ys-flywheel-stat {
  background: var(--ys-card);
  border: 1px solid var(--ys-border);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  box-shadow: var(--ys-shadow-sm);
  transition: all 0.3s;
}
.ys-flywheel-stat:hover {
  border-color: var(--ys-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--ys-shadow-md);
}
.ys-flywheel-stat .num {
  font-size: 2rem;
  font-weight: 800;
  background: var(--ys-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ys-flywheel-stat .label { font-size: 0.85rem; color: var(--ys-text-dim); margin-top: 4px; }
.ys-flywheel-text { font-size: 1rem; color: var(--ys-text-dim); line-height: 1.7; }
.ys-flywheel-text strong { color: var(--ys-text-heading); }

/* ===== 核心价值 ===== */
.ys-values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.ys-value-card {
  background: var(--ys-card);
  border: 1px solid var(--ys-border);
  border-radius: 20px;
  padding: 40px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--ys-shadow-sm);
  transition: all 0.3s;
}
.ys-value-card:hover {
  border-color: var(--ys-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--ys-shadow-lg);
}
.ys-value-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 20px 20px 0 0;
  background: var(--ys-gradient); /* 统一青蓝顶条（原四色渐变） */
}
.ys-value-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: #f1f5f9;
  border: 1px solid #e4e7ee;
}
.ys-value-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; color: var(--ys-text-heading); }
.ys-value-en { font-size: 0.75rem; color: var(--ys-accent-dark); margin-bottom: 16px; letter-spacing: 0.05em; }
.ys-value-desc { font-size: 0.9rem; color: var(--ys-text-dim); }

/* ===== CTA ===== */
.ys-cta-section {
  padding: 80px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--ys-bg) 0%, #e8f7fe 50%, var(--ys-bg) 100%);
}
.ys-cta-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at center, rgba(21, 176, 237, 0.07) 0%, transparent 70%);
}
.ys-cta-content { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
.ys-cta-content h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; color: var(--ys-text-heading); }
.ys-cta-content h2 .ys-grad {
  background: var(--ys-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ys-cta-content p { font-size: 1.1rem; color: var(--ys-text-dim); margin-bottom: 32px; }
.ys-cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== 动效 ===== */
@keyframes ys-fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes ys-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}
.ys-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.ys-reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .ys-clouds-grid { grid-template-columns: repeat(3, 1fr); }
  .ys-ai-grid { grid-template-columns: 1fr; }
  .ys-eco-grid { grid-template-columns: 1fr; }
  .ys-values-grid { grid-template-columns: repeat(2, 1fr); }
  .ys-flywheel-wrap { flex-direction: column; gap: 40px; }
  .ys-flywheel-info { text-align: center; }
  .ys-hero h1 { font-size: 2.8rem; }
}
@media (max-width: 767px) {
  .ys-hero { padding: 100px 20px 60px; }
  .ys-hero h1 { font-size: 2rem; }
  .ys-hero-sub { font-size: 1rem; }
  .ys-hero-stats { flex-direction: column; gap: 24px; }
  .ys-hero-actions { flex-direction: column; align-items: stretch; }
  .ys-section { padding: 60px 20px; }
  .ys-section-title { font-size: 1.6rem; }
  .ys-clouds-grid { grid-template-columns: repeat(2, 1fr); }
  .ys-values-grid { grid-template-columns: 1fr; }
  .ys-cta-section { padding: 60px 20px; }
}