/* --- 接 style.css --- */

/* ---------- Hero 区域 ---------- */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  background: var(--gradient);
  position: relative; overflow: hidden; padding-top: 72px;
}
.hero::before {
  content:''; position: absolute; inset:0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='1.5' fill='rgba(255,255,255,0.15)'/%3E%3C/svg%3E") repeat;
  opacity: 0.6;
}
.hero::after {
  content:''; position: absolute; bottom: -2px; left:0; right:0;
  height: 120px;
  background: linear-gradient(to top, var(--bg-light), transparent);
}
.hero-content { position: relative; z-index: 2; padding: 80px 0 120px; text-align: center; }
.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800;
  color: #fff; line-height: 1.2; margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.15);
}
.hero-content h1 span { display: block; font-size: 0.55em; font-weight: 500; opacity: 0.85; margin-top: 8px; }
.hero-sub {
  font-size: 1.2rem; color: rgba(255,255,255,0.88); max-width: 640px;
  margin: 0 auto 40px; line-height: 1.6;
}
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 36px; border-radius: 10px; font-size: 1rem;
  font-weight: 600; border: none; cursor: pointer; transition: var(--transition);
}
.btn-primary { background: #fff; color: var(--primary); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(255,255,255,0.3); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.5); }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; }

/* Hero 数据统计条 */
.hero-stats {
  display: flex; justify-content: center; gap: 48px; flex-wrap: wrap;
  margin-top: 60px; padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.2);
}
.hero-stat { text-align: center; color: #fff; }
.hero-stat .num {
  font-size: 2.4rem; font-weight: 800; display: block;
  background: linear-gradient(135deg, #fff, #b3d9ff); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-stat .label { font-size: 0.9rem; opacity: 0.8; }

/* ---------- 通用区块 ---------- */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-light); }
.section-header { text-align: center; margin-bottom: 64px; }
.section-header h2 {
  font-size: 2rem; font-weight: 800; color: var(--text-dark); margin-bottom: 12px;
}
.section-header h2 .accent { color: var(--primary); }
.section-header p { font-size: 1.1rem; color: var(--text-light); max-width: 600px; margin: 0 auto; }
.section-header .divider {
  width: 60px; height: 4px; background: var(--gradient);
  border-radius: 2px; margin: 16px auto 0;
}

/* ---------- 公司概况 ---------- */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
}
.about-text h3 { font-size: 1.4rem; font-weight: 700; color: var(--text-dark); margin-bottom: 16px; }
.about-text p { margin-bottom: 16px; line-height: 1.8; }
.about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.about-tags span {
  background: rgba(21,101,192,0.06); color: var(--primary);
  padding: 6px 16px; border-radius: 20px; font-size: 0.88rem; font-weight: 500;
}
.about-image {
  background: var(--gradient); border-radius: var(--radius);
  height: 360px; display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.2rem; font-weight: 600;
  box-shadow: var(--shadow-lg);
}

/* ---------- 业务板块卡片 ---------- */
.biz-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.biz-card {
  background: var(--bg-white); border-radius: var(--radius);
  padding: 36px 28px; text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition); position: relative; overflow: hidden;
}
.biz-card::before {
  content:''; position: absolute; top:0; left:0; right:0; height: 4px;
  background: var(--gradient); transform: scaleX(0); transition: var(--transition);
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.biz-card:hover::before { transform: scaleX(1); }
.biz-icon {
  width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 16px;
  background: linear-gradient(135deg, rgba(21,101,192,0.08), rgba(100,181,246,0.08));
  display: flex; align-items: center; justify-content: center; font-size: 1.8rem;
}
.biz-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.biz-card p { font-size: 0.92rem; color: var(--text-light); line-height: 1.6; }
.biz-card .biz-link {
  display: inline-block; margin-top: 16px; font-weight: 600; font-size: 0.9rem;
  color: var(--primary); position: relative;
}
.biz-card .biz-link::after { content:'→'; margin-left: 6px; transition: var(--transition); }
.biz-card .biz-link:hover::after { margin-left: 12px; }

/* ---------- 产品展示 ---------- */
.product-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.product-card {
  background: var(--bg-white); border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
  transition: var(--transition);
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.product-thumb {
  height: 200px; background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1rem; font-weight: 600;
  overflow: hidden; position: relative;
}
.product-thumb img {
  width: 100%; height: 100%; object-fit: contain;
  background: #f0f2f5;
}
.product-thumb .thumb-placeholder {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: #fff; font-size: 0.95rem; font-weight: 600; text-align: center;
  padding: 16px;
}
.product-thumb .thumb-placeholder .thumb-icon { font-size: 2.8rem; }
.product-thumb .thumb-label {
  position: absolute; left: 12px; bottom: 10px;
  background: rgba(0,0,0,0.45); color: #fff;
  padding: 3px 10px; border-radius: 6px;
  font-size: 0.78rem; font-weight: 500;
}
.product-body { padding: 28px; }
.product-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
.product-body .product-tag {
  display: inline-block; background: rgba(21,101,192,0.06); color: var(--primary);
  padding: 3px 12px; border-radius: 12px; font-size: 0.82rem; font-weight: 500; margin-bottom: 12px;
}
.product-body ul { list-style: none; padding:0; }
.product-body ul li {
  padding: 5px 0; font-size: 0.92rem; color: var(--text-body);
  border-bottom: 1px solid #f0f0f8; padding-left: 18px; position: relative;
}
.product-body ul li::before {
  content:''; position: absolute; left:0; top: 13px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
}

/* ---------- 平台方案 ---------- */
.platform-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.platform-card {
  background: var(--bg-white); border-radius: var(--radius);
  padding: 40px 32px; border: 1px solid var(--border);
  transition: var(--transition); position: relative;
}
.platform-card.featured {
  border: none; background: var(--gradient); color: #fff;
  transform: scale(1.03); box-shadow: var(--shadow-lg);
}
.platform-card:not(.featured):hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.platform-card .p-icon {
  width: 56px; height: 56px; border-radius: 14px; margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
}
.platform-card:not(.featured) .p-icon { background: rgba(21,101,192,0.06); }
.platform-card.featured .p-icon { background: rgba(255,255,255,0.2); }
.platform-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.platform-card:not(.featured) h3 { color: var(--text-dark); }
.platform-card p { font-size: 0.95rem; line-height: 1.7; margin-bottom: 16px; }
.platform-card:not(.featured) p { color: var(--text-body); }
.platform-card ul { list-style: none; padding:0; }
.platform-card ul li {
  padding: 6px 0; font-size: 0.92rem; padding-left: 22px; position: relative;
}
.platform-card:not(.featured) ul li { color: var(--text-body); }
.platform-card:not(.featured) ul li::before {
  content:'✓'; position: absolute; left:0; color: var(--accent); font-weight: 700;
}
.platform-card.featured ul li::before {
  content:'✓'; position: absolute; left:0; color: rgba(255,255,255,0.8); font-weight: 700;
}

/* ---------- 案例数据 ---------- */
.case-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.case-card {
  background: var(--bg-white); padding: 36px 24px; border-radius: var(--radius);
  text-align: center; border: 1px solid var(--border);
  transition: var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.case-card .case-num {
  font-size: 2.4rem; font-weight: 800; color: var(--primary); display: block;
}
.case-card .case-label { font-size: 0.95rem; color: var(--text-light); margin-top: 4px; }

/* ---------- 联系我们 ---------- */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start;
}
.contact-info h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-dark); margin-bottom: 24px; }
.contact-item {
  display: flex; gap: 16px; align-items: flex-start; margin-bottom: 24px;
}
.contact-item .c-icon {
  width: 48px; height: 48px; border-radius: 12px; flex-shrink:0;
  background: rgba(21,101,192,0.06); display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: var(--primary);
}
.contact-item .c-text strong { display: block; font-size: 1rem; color: var(--text-dark); margin-bottom: 4px; }
.contact-item .c-text span { font-size: 0.95rem; color: var(--text-body); }

.contact-form { background: var(--bg-white); padding: 40px; border-radius: var(--radius); border: 1px solid var(--border); }
.contact-form h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-dark); margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.9rem; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: 0.95rem; font-family: inherit;
  transition: var(--transition); background: var(--bg-light);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary); background: #fff;
  box-shadow: 0 0 0 3px rgba(21,101,192,0.1);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-submit {
  background: var(--gradient); color: #fff; padding: 14px 40px;
  border: none; border-radius: var(--radius-sm); font-size: 1rem;
  font-weight: 600; cursor: pointer; transition: var(--transition);
}
.form-submit:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(21,101,192,0.3); }

/* ---------- Footer ---------- */
.footer {
  background: var(--primary); color: rgba(255,255,255,0.8); padding: 60px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand h3 { color: #fff; font-size: 1.2rem; margin-bottom: 12px; }
.footer-brand p { font-size: 0.92rem; line-height: 1.7; }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
.footer-col ul { list-style: none; padding:0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.7); font-size: 0.92rem; }
.footer-col ul li a:hover { color: #fff; }
.footer-bottom {
  padding: 20px 0; text-align: center; font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
}

/* ---------- 动画 ---------- */
.fade-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .platform-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .about-grid { grid-template-columns: 1fr; }
  .biz-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .section { padding: 64px 0; }
  .hero-content h1 { font-size: 2rem; }
}