/* ===================================================
   杰芳科技官网 - 全局样式系统 v3.0
   设计语言：白色科技风 · 蓝色主色 · 精致阴影
   参考：腾讯云 / 字节跳动 / 阿里云
   =================================================== */

/* ========== CSS 变量系统 ========== */
:root {
  --primary: #1d6ae5;
  --primary-dark: #1558cc;
  --primary-light: #4a8ff0;
  --primary-hover: #0e4fc4;
  --accent: #ff6b35;
  --accent-hover: #e85c28;
  --success: #00b96b;
  --warning: #f5a623;

  --ai-blue: #0055d4;
  --ai-cyan: #00aaff;
  --ai-purple: #6c47ff;
  --ai-gradient: linear-gradient(135deg, #1d6ae5 0%, #00aaff 100%);
  --ai-gradient-2: linear-gradient(135deg, #6c47ff 0%, #1d6ae5 50%, #00aaff 100%);

  /* 白色背景系统 */
  --bg-page: #f5f6fa;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8faff;
  --bg-section-alt: #f0f4ff;
  --bg-section-dark: #0b1120;
  --bg-glass: rgba(255,255,255,0.72);
  --bg-blue-tint: #e8f0fe;

  /* 文字系统 */
  --text-primary: #0d1b2e;
  --text-secondary: #4a5568;
  --text-muted: #8896a7;
  --text-light: #b0bec5;
  --text-white: #ffffff;
  --text-link: #1d6ae5;

  /* 边框系统 */
  --border: #e2e8f0;
  --border-light: #f0f4f8;
  --border-hover: #c0d0e8;
  --border-focus: #1d6ae5;
  --border-accent: rgba(29,106,229,0.3);

  /* 阴影系统 */
  --shadow-xs: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.1), 0 4px 16px rgba(0,0,0,0.06);
  --shadow-xl: 0 32px 80px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-blue: 0 8px 28px rgba(29,106,229,0.28);
  --shadow-blue-sm: 0 4px 14px rgba(29,106,229,0.22);
  --shadow-accent: 0 8px 24px rgba(255,107,53,0.28);
  --shadow-card: 0 4px 20px rgba(13,27,46,0.06), 0 1px 4px rgba(13,27,46,0.04);

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius: 10px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-pill: 100px;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  --nav-height: 64px;
}

/* ========== 基础重置 ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB',
               'Microsoft YaHei UI', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; transition: var(--transition-fast); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font: inherit; }

/* ========== 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.99);
  box-shadow: 0 1px 0 var(--border), 0 4px 24px rgba(0,0,0,0.06);
  border-bottom-color: transparent;
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-logo {
  display: flex; align-items: center; gap: 0.65rem;
  text-decoration: none; flex-shrink: 0;
}

.nav-logo img {
  height: 32px; width: auto; object-fit: contain;
}

.nav-logo-text {
  font-size: 1rem; font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.nav-links {
  display: flex; align-items: center;
  gap: 0.1rem; flex: 1;
}

.nav-links a {
  padding: 0.45rem 0.95rem;
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  white-space: nowrap; position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute; bottom: -2px; left: 50%; right: 50%;
  height: 2px; background: var(--primary);
  border-radius: 2px;
  transition: left 0.2s ease, right 0.2s ease;
}

.nav-links a:hover {
  color: var(--primary);
  background: var(--bg-blue-tint);
}

.nav-links a.active {
  color: var(--primary);
  background: var(--bg-blue-tint);
  font-weight: 600;
}

.nav-links a.active::after {
  left: 0.95rem; right: 0.95rem;
}

.nav-badge {
  display: inline-flex; align-items: center;
  padding: 1px 5px; font-size: 0.6rem; font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #ff6b35, #e8321c);
  border-radius: var(--radius-pill);
  margin-left: 3px; vertical-align: middle;
}

.nav-actions {
  display: flex; align-items: center; gap: 0.65rem; flex-shrink: 0;
}

.nav-phone {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.83rem; color: var(--text-secondary);
  padding: 0.38rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: var(--transition-fast);
  font-weight: 500;
}

.nav-phone:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--bg-blue-tint);
}
.nav-phone svg { width: 13px; height: 13px; }

.btn-nav {
  padding: 0.45rem 1.25rem;
  font-size: 0.85rem; font-weight: 600;
  color: #fff; background: var(--primary);
  border-radius: var(--radius-pill);
  transition: var(--transition); white-space: nowrap;
  box-shadow: var(--shadow-blue-sm);
}

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

.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  padding: 8px; cursor: pointer;
}

.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text-secondary); border-radius: 2px;
  transition: var(--transition);
}

/* ========== 容器 ========== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.container-sm { max-width: 960px; margin: 0 auto; padding: 0 2rem; }

/* ========== 按钮系统 ========== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.5rem; padding: 0.7rem 1.75rem;
  font-size: 0.9rem; font-weight: 600;
  border-radius: var(--radius-pill);
  transition: var(--transition); cursor: pointer;
  text-decoration: none; white-space: nowrap;
  border: none; position: relative; overflow: hidden;
}

.btn-primary {
  color: #fff; background: var(--primary);
  box-shadow: var(--shadow-blue-sm);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-blue);
}

.btn-accent {
  color: #fff; background: var(--accent);
  box-shadow: var(--shadow-accent);
}
.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255,107,53,0.38);
}

.btn-outline {
  color: var(--primary); background: transparent;
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: var(--bg-blue-tint);
  transform: translateY(-1px);
}

.btn-outline-white {
  color: #fff; background: transparent;
  border: 1.5px solid rgba(255,255,255,0.5);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
}

.btn-ghost {
  color: var(--text-secondary); background: transparent;
  padding: 0.7rem 1.25rem;
}
.btn-ghost:hover { color: var(--primary); background: var(--bg-blue-tint); }

.btn-white {
  color: var(--primary); background: #fff;
  box-shadow: var(--shadow-md);
}
.btn-white:hover {
  background: var(--bg-blue-tint);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-lg { padding: 0.9rem 2.25rem; font-size: 1rem; }
.btn-sm { padding: 0.38rem 0.95rem; font-size: 0.8rem; }

.btn-ai {
  color: #fff; background: var(--ai-gradient);
  box-shadow: 0 4px 18px rgba(29,106,229,0.38);
}
.btn-ai:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 10px 32px rgba(29,106,229,0.5);
}

/* ========== Section 通用样式 ========== */
.section { padding: var(--spacing-xxl) 0; }
.section-sm { padding: 3rem 0; }
.section-white { background: var(--bg-white); padding: var(--spacing-xxl) 0; }
.section-alt { background: var(--bg-section-alt); padding: var(--spacing-xxl) 0; }
.section-gray { background: var(--bg-page); padding: var(--spacing-xxl) 0; }
.section-dark {
  background: var(--bg-section-dark);
  color: #fff;
  padding: var(--spacing-xxl) 0;
}
/* 紧凑版 section（无需手写 style="padding:3rem 0"）*/
.section-white.section-sm,
.section-alt.section-sm,
.section-gray.section-sm { padding: 3rem 0; }

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header > * + * { margin-top: 0; }

.section-label {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.28rem 0.85rem;
  font-size: 0.72rem; font-weight: 700;
  color: var(--primary);
  background: var(--bg-blue-tint);
  border: 1px solid rgba(29,106,229,0.2);
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
  letter-spacing: 0.8px; text-transform: uppercase;
}

.section-label::before {
  content: '';
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  animation: pulseDot 2.5s ease-in-out infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.section-label-white {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.28rem 0.85rem;
  font-size: 0.72rem; font-weight: 700;
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
  letter-spacing: 0.8px; text-transform: uppercase;
}

.section-title {
  font-size: clamp(1.85rem, 3.5vw, 2.8rem);
  font-weight: 800; color: var(--text-primary);
  line-height: 1.2; margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.section-title.white { color: #fff; }

.section-title .highlight {
  background: var(--ai-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 1.05rem; color: var(--text-secondary);
  max-width: 640px; margin: 0 auto; line-height: 1.8;
}
.section-desc.white { color: rgba(255,255,255,0.7); }

/* ========== 卡片系统 ========== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

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

.card-elevated {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid transparent;
}

.card-elevated:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-hover);
}

/* 卡片顶部彩色线 hover 展开效果 */
.card-lined {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.card-lined::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--card-color, var(--primary));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
}
.card-lined:hover::before { transform: scaleX(1); }
.card-lined:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(29,106,229,0.2);
}

/* ========== 图标容器 ========== */
.icon-box {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.icon-box svg { width: 24px; height: 24px; }

.icon-box-blue {
  background: rgba(29,106,229,0.1);
  border: 1px solid rgba(29,106,229,0.15);
  color: var(--primary);
}

.icon-box-accent {
  background: rgba(255,107,53,0.1);
  border: 1px solid rgba(255,107,53,0.15);
  color: var(--accent);
}

.icon-box-green {
  background: rgba(0,185,107,0.1);
  border: 1px solid rgba(0,185,107,0.15);
  color: var(--success);
}

.icon-box-purple {
  background: rgba(108,71,255,0.1);
  border: 1px solid rgba(108,71,255,0.15);
  color: var(--ai-purple);
}

.icon-box-cyan {
  background: rgba(0,170,255,0.1);
  border: 1px solid rgba(0,170,255,0.15);
  color: var(--ai-cyan);
}

.icon-box-gradient {
  background: var(--ai-gradient);
  color: #fff;
  box-shadow: var(--shadow-blue-sm);
}

/* ========== 标签 / Badge ========== */
.badge {
  display: inline-flex; align-items: center;
  padding: 2px 10px; font-size: 0.68rem; font-weight: 700;
  border-radius: var(--radius-pill); letter-spacing: 0.5px;
}
.badge-new { color: #fff; background: linear-gradient(135deg, #00b96b, #00d68f); }
.badge-hot { color: #fff; background: linear-gradient(135deg, var(--accent), #e03010); }
.badge-ai  { color: #fff; background: var(--ai-gradient); }
.badge-blue { color: var(--primary); background: var(--bg-blue-tint); border: 1px solid rgba(29,106,229,0.2); }




/* ========== 数字统计 ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1.25rem;
}

.stat-item {
  text-align: center; padding: 2rem 1.25rem;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative; overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--ai-gradient);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-item:hover::before { transform: scaleX(1); }

.stat-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-number {
  font-size: 2.5rem; font-weight: 900;
  background: var(--ai-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; line-height: 1.2;
  margin-bottom: 0.4rem;
}

.stat-label { font-size: 0.85rem; color: var(--text-muted); font-weight: 500; }

/* ========== 标签页 ========== */
.tabs {
  display: flex; gap: 0.35rem;
  padding: 0.3rem;
  background: var(--bg-section-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  width: fit-content; margin: 0 auto;
}

.tab-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  transition: var(--transition); cursor: pointer;
  background: transparent; border: none;
}

.tab-btn.active, .tab-btn:hover { color: var(--primary); }
.tab-btn.active { background: var(--bg-white); color: var(--primary); box-shadow: var(--shadow-xs); font-weight: 600; }

/* ========== 步骤条 ========== */
.steps {
  display: flex; align-items: flex-start;
  gap: 0; position: relative;
}

.steps::before {
  content: ''; position: absolute;
  top: 24px; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--ai-cyan));
  opacity: 0.2; z-index: 0;
}

.step {
  flex: 1; text-align: center;
  position: relative; z-index: 1;
}

.step-circle {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--bg-white); border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; font-weight: 700;
  color: var(--primary);
  margin: 0 auto 0.75rem;
  transition: var(--transition);
  box-shadow: var(--shadow-xs);
}

.step:hover .step-circle {
  background: var(--primary); color: #fff;
  border-color: var(--primary);
  transform: scale(1.1);
  box-shadow: var(--shadow-blue);
}

.step-title { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.25rem; }
.step-desc  { font-size: 0.78rem; color: var(--text-muted); }

/* ========== 价格卡片 ========== */
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative; overflow: hidden;
}

.pricing-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--border); transition: var(--transition);
}

.pricing-card.popular::before { background: var(--ai-gradient); }
.pricing-card.popular {
  border-color: rgba(29,106,229,0.3);
  box-shadow: var(--shadow-blue), var(--shadow-card);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-hover);
}

.pricing-badge {
  position: absolute; top: 1.25rem; right: 1.25rem;
  padding: 3px 12px; font-size: 0.7rem; font-weight: 700;
  color: #fff; background: var(--ai-gradient);
  border-radius: var(--radius-pill);
}

.pricing-name { font-size: 1.15rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.4rem; }
.pricing-desc { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 1.25rem; }

.pricing-price {
  font-size: 2.2rem; font-weight: 900;
  color: var(--text-primary); margin-bottom: 1.5rem;
  display: flex; align-items: baseline; gap: 0.25rem;
}
.pricing-price .currency { font-size: 1.1rem; font-weight: 700; color: var(--primary); }
.pricing-price small { font-size: 0.9rem; font-weight: 400; color: var(--text-muted); }

.pricing-features { display: flex; flex-direction: column; gap: 0.65rem; margin-bottom: 1.5rem; }
.pricing-feature {
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 0.85rem; color: var(--text-secondary);
}
.pricing-feature-check {
  width: 18px; height: 18px; border-radius: 50%;
  background: rgba(0,185,107,0.12); border: 1px solid rgba(0,185,107,0.25);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.pricing-feature-check svg { width: 10px; height: 10px; color: var(--success); }

/* ========== CTA 区块 ========== */
.cta-section {
  padding: var(--spacing-xxl) 0;
  background: var(--bg-section-dark);
  position: relative; overflow: hidden;
}

.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 70% at 50% 50%, rgba(29,106,229,0.18) 0%, transparent 70%);
  pointer-events: none;
}

.cta-inner {
  position: relative; z-index: 1;
  text-align: center;
}

.cta-title {
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-weight: 800; color: #fff; margin-bottom: 0.75rem;
  letter-spacing: -0.5px;
}

.cta-desc {
  font-size: 1.05rem; color: rgba(255,255,255,0.65);
  margin-bottom: 2.5rem; max-width: 560px;
  margin-left: auto; margin-right: auto; line-height: 1.8;
}

.cta-actions {
  display: flex; gap: 1rem; justify-content: center;
  flex-wrap: wrap; margin-bottom: 2.5rem;
}

.cta-trust {
  display: flex; align-items: center; justify-content: center;
  gap: 2rem; flex-wrap: wrap;
  font-size: 0.82rem; color: rgba(255,255,255,0.45);
}

.cta-trust-item {
  display: flex; align-items: center; gap: 0.35rem;
}

.cta-trust-item svg {
  width: 14px; height: 14px; color: #00d68f; flex-shrink: 0;
}

/* ========== Footer ========== */
.footer {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem; margin-bottom: 3rem;
}

.footer-brand-logo {
  display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem;
}
.footer-brand-logo img { height: 30px; width: auto; object-fit: contain; }
.footer-brand-name { font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.footer-brand-desc { font-size: 0.83rem; color: var(--text-muted); line-height: 1.75; margin-bottom: 1.25rem; }

.footer-social { display: flex; gap: 0.65rem; }
.footer-social-link {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  background: var(--bg-page); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); transition: var(--transition-fast);
}
.footer-social-link svg { width: 16px; height: 16px; }
.footer-social-link:hover {
  color: var(--primary);
  background: var(--bg-blue-tint);
  border-color: rgba(29,106,229,0.3);
}

.footer-col-title {
  font-size: 0.85rem; font-weight: 700; color: var(--text-primary);
  margin-bottom: 1rem; padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.footer-links { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links a { font-size: 0.83rem; color: var(--text-muted); transition: var(--transition-fast); }
.footer-links a:hover { color: var(--primary); padding-left: 4px; }

.footer-contact-item {
  display: flex; align-items: flex-start; gap: 0.5rem;
  font-size: 0.82rem; color: var(--text-muted); margin-bottom: 0.6rem;
}
.footer-contact-icon {
  width: 16px; height: 16px; flex-shrink: 0; margin-top: 1px; color: var(--primary);
}
.footer-contact-icon svg { width: 100%; height: 100%; }

.footer-bottom {
  border-top: 1px solid var(--border); padding: 1.5rem 0;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  font-size: 0.79rem; color: var(--text-muted);
  background: var(--bg-page);
  /* 负边距向外延伸到 container 边界 */
  margin: 0 -2rem; padding: 1.25rem 2rem;
}

.footer-bottom-row {
  display: flex; align-items: center; justify-content: center;
  gap: 1.5rem; flex-wrap: wrap;
}

.footer-icp {
  display: inline-flex; align-items: center; gap: 5px;
  color: var(--text-muted); text-decoration: none; transition: var(--transition-fast);
}
.footer-icp:hover { color: var(--primary); }
.footer-icp img { width: 16px; height: 16px; object-fit: contain; display: inline; vertical-align: middle; }

/* ========== Hero Canvas ========== */
#hero-canvas {
  position: absolute; inset: 0; z-index: 0; opacity: 0.6;
}

/* ========== 滚动入场动画 ========== */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }
.fade-in-delay-5 { transition-delay: 0.5s; }

/* ========== 网格布局 ========== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* ========== 分隔线 ========== */
.divider { height: 1px; background: var(--border); margin: var(--spacing-lg) 0; }

/* ========== 滚动条 ========== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-page); }
::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-light); }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-height: 60px; }
  .nav-links, .nav-phone { display: none; }
  .nav-hamburger { display: flex; }
  .nav-inner { gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .footer-bottom-row { flex-wrap: wrap; gap: 0.75rem; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .section-white,
  .section-alt,
  .section-gray,
  .section-dark { padding: 4rem 0; }
  .section-white.section-sm,
  .section-alt.section-sm,
  .section-gray.section-sm { padding: 2.5rem 0; }
  .cta-actions { flex-direction: column; align-items: center; }
  .steps { flex-direction: column; gap: 1rem; }
  .steps::before { display: none; }
  .container, .container-sm { padding: 0 1.25rem; }
  .footer-bottom { margin: 0 -1.25rem; padding: 1.25rem 1.25rem; }
}

@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .section-title { font-size: 1.65rem; }
  .btn-lg { padding: 0.78rem 1.6rem; font-size: 0.95rem; }
}

/* ========== 工具类 ========== */
.text-center { text-align: center; }
.text-gradient {
  background: var(--ai-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.text-accent-gradient {
  background: linear-gradient(135deg, var(--accent), #ffb347);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.mt-1 { margin-top: 0.5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 0.5rem; } .gap-2 { gap: 1rem; } .gap-3 { gap: 1.5rem; }
.w-full { width: 100%; } .hidden { display: none; }

/* ========== 特殊分隔块：深色到白色 ========== */
.wave-divider {
  width: 100%; height: 60px;
  overflow: hidden; display: block;
}
.wave-divider svg { display: block; width: 100%; height: 100%; }

/* ========== 精致辅助组件 ========== */

/* 高亮数字文本 */
.num-highlight {
  font-size: 2rem; font-weight: 900;
  background: var(--ai-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1.2;
}

/* 信息行（图标 + 文字） */
.info-row {
  display: flex; align-items: flex-start; gap: 0.65rem;
  padding: 0.55rem 0; border-bottom: 1px solid var(--border-light);
  font-size: 0.87rem; color: var(--text-secondary);
}
.info-row:last-child { border-bottom: none; }
.info-row svg { width: 16px; height: 16px; color: var(--primary); flex-shrink: 0; margin-top: 1px; }

/* 面包屑 */
.breadcrumb {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.8rem; color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb svg { width: 12px; height: 12px; }

/* 空状态 */
.empty-state {
  text-align: center; padding: 3rem 1.5rem;
  color: var(--text-muted);
}
.empty-state svg { width: 48px; height: 48px; opacity: 0.3; margin: 0 auto 1rem; }

/* 骨架屏动画 */
.skeleton {
  background: linear-gradient(90deg, var(--bg-page) 25%, var(--border-light) 50%, var(--bg-page) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ========== 发布级精致组件 ========== */

/* 渐变边框卡片 */
.card-gradient-border {
  position: relative;
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: 2rem;
}
.card-gradient-border::before {
  content: '';
  position: absolute; inset: -1px;
  border-radius: calc(var(--radius-xl) + 1px);
  background: linear-gradient(135deg, rgba(29,106,229,0.3), rgba(0,170,255,0.1), rgba(29,106,229,0.05));
  z-index: -1;
}

/* 脉冲光环（用于重要元素） */
.pulse-ring {
  position: relative;
}
.pulse-ring::after {
  content: '';
  position: absolute; inset: -6px;
  border-radius: inherit;
  border: 1.5px solid var(--primary);
  opacity: 0;
  animation: pulseRing 2.5s ease-out infinite;
}
@keyframes pulseRing {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.2); opacity: 0; }
}

/* 客户评价卡片 */
.testimonial-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative;
}
.testimonial-card::before {
  content: '"';
  position: absolute; top: 1rem; right: 1.5rem;
  font-size: 4rem; line-height: 1;
  color: rgba(29,106,229,0.08);
  font-family: Georgia, serif;
}
.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(29,106,229,0.2);
}
.testimonial-text {
  font-size: 0.9rem; color: var(--text-secondary);
  line-height: 1.8; margin-bottom: 1.25rem;
}
.testimonial-author {
  display: flex; align-items: center; gap: 0.75rem;
}
.testimonial-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--ai-gradient);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 0.9rem; font-weight: 700; flex-shrink: 0;
}
.testimonial-name { font-size: 0.87rem; font-weight: 600; color: var(--text-primary); }
.testimonial-role { font-size: 0.75rem; color: var(--text-muted); }

/* 浮动徽章 */
.float-badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 0.75rem; font-weight: 600;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}
.float-badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--success);
  animation: pulseDot 2s ease-in-out infinite;
}

/* 功能高亮行 */
.feature-row {
  display: flex; align-items: flex-start; gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-light);
}
.feature-row:last-child { border-bottom: none; padding-bottom: 0; }
.feature-row-icon {
  width: 42px; height: 42px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; background: var(--bg-blue-tint);
  border: 1px solid rgba(29,106,229,0.15);
  color: var(--primary);
}
.feature-row-icon svg { width: 18px; height: 18px; }
.feature-row-title { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.2rem; }
.feature-row-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.6; }

/* 服务承诺条 */
.promise-strip {
  background: linear-gradient(135deg, #f0f4ff, #e8f0fe);
  border: 1px solid rgba(29,106,229,0.15);
  border-radius: var(--radius-xl);
  padding: 1.5rem 2rem;
  display: flex; align-items: center; gap: 2rem;
  flex-wrap: wrap; justify-content: center;
}
.promise-item {
  display: flex; align-items: center; gap: 0.65rem;
  font-size: 0.87rem; font-weight: 600; color: var(--text-primary);
  white-space: nowrap;
}
.promise-item svg { width: 18px; height: 18px; color: var(--success); flex-shrink: 0; }

/* 精致列表项 */
.check-list { display: flex; flex-direction: column; gap: 0.6rem; }
.check-item {
  display: flex; align-items: flex-start; gap: 0.6rem;
  font-size: 0.87rem; color: var(--text-secondary);
}
.check-icon {
  width: 18px; height: 18px; border-radius: 50%;
  background: rgba(0,185,107,0.12); border: 1px solid rgba(0,185,107,0.3);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 1px;
}
.check-icon svg { width: 10px; height: 10px; color: var(--success); }

/* 数字高亮块 */
.kpi-block {
  text-align: center; padding: 1.5rem;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.kpi-num {
  font-size: 2rem; font-weight: 900;
  background: var(--ai-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1;
}
.kpi-label { font-size: 0.78rem; color: var(--text-muted); margin-top: 0.35rem; }

/* 页面顶部进度条 */
#page-progress {
  position: fixed; top: 0; left: 0; height: 2px; z-index: 2000;
  background: var(--ai-gradient); width: 0%;
  transition: width 0.1s linear;
}

/* 回到顶部按钮 */
#back-to-top {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--primary); color: #fff;
  border: none; cursor: pointer; z-index: 999;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-blue);
  opacity: 0; transform: translateY(10px);
  transition: var(--transition);
  pointer-events: none;
}
#back-to-top.show {
  opacity: 1; transform: translateY(0);
  pointer-events: auto;
}
#back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}
#back-to-top svg { width: 18px; height: 18px; }

/* ========== 成功案例组件 ========== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.case-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative;
}

.case-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--case-color, var(--primary));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 2;
}

.case-card:hover::before { transform: scaleX(1); }

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(29,106,229,0.2);
}

.case-img {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.case-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center center;
  transition: transform 0.5s ease;
}

.case-card:hover .case-img img {
  transform: scale(1.04);
}

.case-badge {
  position: absolute; bottom: 1rem; left: 1rem;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.72rem; font-weight: 700;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  letter-spacing: 0.4px;
}

.case-body { padding: 1.5rem; }

.case-industry {
  font-size: 0.75rem; font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  letter-spacing: 0.3px;
}

.case-title {
  font-size: 1rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.65rem; line-height: 1.45;
}

.case-desc {
  font-size: 0.84rem; color: var(--text-secondary);
  line-height: 1.75; margin-bottom: 1.25rem;
}

.case-metrics {
  display: flex; gap: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.case-metric { text-align: center; flex: 1; }

.case-metric-num {
  display: block;
  font-size: 1.35rem; font-weight: 900;
  background: var(--ai-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; line-height: 1.2; margin-bottom: 2px;
}

.case-metric-label {
  font-size: 0.72rem; color: var(--text-muted);
  font-weight: 500;
}

@media (max-width: 768px) {
  .case-grid { grid-template-columns: 1fr; }
}

/* ========== 行业解决方案区块 ========== */
.solution-tabs {
  display: flex; align-items: center; gap: 0.5rem;
  flex-wrap: wrap; justify-content: center;
  margin-bottom: 2.5rem;
}

.solution-tab {
  padding: 0.55rem 1.35rem;
  font-size: 0.87rem; font-weight: 600;
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--bg-white);
  cursor: pointer; transition: var(--transition-fast);
  white-space: nowrap;
}

.solution-tab:hover,
.solution-tab.active {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--bg-blue-tint);
}

.solution-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: var(--shadow-blue-sm);
}

.solution-panel { display: none; }
.solution-panel.active { display: grid; grid-template-columns: 1fr 1.1fr; gap: 3.5rem; align-items: center; }

.solution-info {}

.solution-eyebrow {
  font-size: 0.75rem; font-weight: 700; color: var(--primary);
  letter-spacing: 0.8px; text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.solution-title {
  font-size: clamp(1.45rem, 2.5vw, 2rem);
  font-weight: 800; color: var(--text-primary);
  line-height: 1.3; margin-bottom: 1rem; letter-spacing: -0.3px;
}

.solution-desc {
  font-size: 0.93rem; color: var(--text-secondary);
  line-height: 1.85; margin-bottom: 1.5rem;
}

.solution-points { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 1.75rem; }

.solution-point {
  display: flex; align-items: center; gap: 0.65rem;
  font-size: 0.87rem; color: var(--text-secondary);
}

.solution-point-icon {
  width: 20px; height: 20px; border-radius: 50%;
  background: rgba(0,185,107,0.12);
  border: 1px solid rgba(0,185,107,0.3);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.solution-point-icon svg { width: 11px; height: 11px; color: var(--success); }

.solution-visual {
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 16/10;
  position: relative;
}

.solution-visual img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center center;
}

.solution-visual-overlay {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 1.25rem;
  background: linear-gradient(to top, rgba(13,27,46,0.7) 0%, transparent 100%);
}

.solution-stat-row {
  display: flex; gap: 1rem;
}

.solution-stat {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem; text-align: center;
}

.solution-stat-num {
  font-size: 1.2rem; font-weight: 800; color: #fff; line-height: 1;
}

.solution-stat-label {
  font-size: 0.7rem; color: rgba(255,255,255,0.75); margin-top: 2px;
}

@media (max-width: 900px) {
  .solution-panel.active { grid-template-columns: 1fr; }
  .solution-visual { display: none; }
}

/* ========== 合作品牌/认可区块 ========== */
.partner-strip {
  padding: 2.5rem 0;
  background: var(--bg-page);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.partner-strip-inner {
  display: flex; align-items: center; gap: 2.5rem;
  flex-wrap: wrap; justify-content: center;
}

.partner-label {
  font-size: 0.78rem; font-weight: 600;
  color: var(--text-muted); white-space: nowrap; flex-shrink: 0;
}

.partner-logos {
  display: flex; align-items: center; gap: 2rem; flex-wrap: wrap;
}

.partner-logo-item {
  display: flex; align-items: center; gap: 0.55rem;
  padding: 0.55rem 1.25rem;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.88rem; font-weight: 700;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.partner-logo-item:hover {
  color: var(--primary);
  border-color: rgba(29,106,229,0.3);
  background: var(--bg-blue-tint);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.partner-logo-item svg { width: 18px; height: 18px; }