/* ============================================
   华创绿能官网 V2.0 - 全局样式表
   配色：深蓝黑科技感 | 字体：Inter + PingFang SC
   适配所有页面：首页+内页+详情页
   ============================================ */

/* ===== CSS 变量 ===== */
:root {
  --bg-primary: #0A1628;
  --bg-secondary: #0F1F3A;
  --bg-card: #132744;
  --bg-card-hover: #1a3358;
  --accent: #1976D2;
  --accent-light: #00BFFF;
  --accent-glow: #00E5FF;
  --accent-green: #4CAF50;
  --accent-orange: #FF9800;
  --accent-red: #F44336;
  --text-primary: #FFFFFF;
  --text-secondary: #B0C4DE;
  --text-muted: #6B8CAE;
  --border: rgba(25, 118, 210, 0.3);
  --border-light: rgba(25, 118, 210, 0.15);
  --gradient: linear-gradient(135deg, #1976D2 0%, #00BFFF 100%);
  --gradient-glow: linear-gradient(135deg, #00BFFF 0%, #00E5FF 100%);
  --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 8px 30px rgba(25, 118, 210, 0.3);
  --shadow-hover: 0 16px 50px rgba(0, 0, 0, 0.4);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1280px;
  --nav-height: 90px;
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }
body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

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

/* ===== 页面加载动画 ===== */
.loader { position: fixed; inset: 0; z-index: 9999; background: var(--bg-primary); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 20px; transition: opacity 0.5s, visibility 0.5s; }
.loader.hidden { opacity: 0; visibility: hidden; }
.loader-ring { width: 48px; height: 48px; border: 3px solid var(--border); border-top-color: var(--accent-light); border-radius: 50%; animation: spin 0.8s linear infinite; }
.loader-text { font-size: 14px; color: var(--text-muted); letter-spacing: 3px; font-weight: 600; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 导航栏 ===== */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10, 22, 40, 0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: all var(--transition); }
.navbar.scrolled { background: rgba(10, 22, 40, 0.98); border-bottom-color: var(--border); box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3); }
.nav-container { max-width: var(--max-width);gap:10px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: var(--nav-height); }

.logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; letter-spacing: 1px; flex-shrink: 0; }
.logo-img { height: 46px; width: auto; display: block; }
.logo-text { font-size: 20px; font-weight: 700; color: var(--text-primary); letter-spacing: 1px; white-space: nowrap; }
.logo-icon { flex-shrink: 0; }

/* 导航链接 */
.nav-links { display: flex; gap: 25px; margin: 0 auto; align-items: center; justify-content: center; flex: 1; }
.nav-link { font-size: 17px; color: var(--text-secondary); transition: color var(--transition); position: relative; padding: 8px 0; display: inline-block; font-weight: 500; }
.nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--gradient); border-radius: 1px; transition: width var(--transition); }
.nav-link:hover, .nav-link.active, .nav-links > li.active > .nav-link { color: var(--accent-light); }
.nav-link:hover::after, .nav-link.active::after, .nav-links > li.active > .nav-link::after { width: 100%; }

/* 下拉菜单 */
.nav-has-dropdown { position: relative; }
.dropdown-menu { position: absolute; top: 100%; left: -12px; min-width: 200px; background: rgba(15, 31, 58, 0.98); backdrop-filter: blur(12px); border: 1px solid var(--border); border-radius: 8px; padding: 8px 0; opacity: 0; visibility: hidden; transform: translateY(10px); transition: all var(--transition); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4); }
.nav-has-dropdown:hover .dropdown-menu, .dropdown-hover:hover .dropdown-menu, .dropdown-menu.show { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu li a { display: block; padding: 10px 20px; font-size: 14px; color: var(--text-secondary); transition: all 0.2s; border-left: 2px solid transparent; }
.dropdown-menu li a:hover { color: var(--accent-light); background: rgba(25, 118, 210, 0.1); border-left-color: var(--accent); }
.dropdown-menu-right { right: 0; left: auto; }

/* 导航操作区 */
.nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-icon-btn { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; color: var(--text-secondary); transition: all var(--transition); }
.nav-icon-btn:hover { color: var(--accent-light); background: rgba(25, 118, 210, 0.15); }
.dropdown-hover { position: relative; }

.nav-phone { display: flex; align-items: center; gap: 8px; color: var(--text-secondary); font-size: 14px; }
.nav-phone svg { color: var(--accent-light); flex-shrink: 0; }
.nav-phone .phone-num { font-weight: 600; color: var(--text-primary); font-size: 15px; letter-spacing: 0.5px; }
.nav-cta { display: inline-flex; align-items: center; gap: 6px; background: var(--gradient); padding: 9px 22px; border-radius: 8px; font-size: 14px; font-weight: 600; color: #fff; transition: transform var(--transition), box-shadow var(--transition); flex-shrink: 0; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 4px 20px rgba(25, 118, 210, 0.5); }

/* 移动端汉堡 */
.mobile-menu-btn { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; background: transparent; border: none; cursor: pointer; z-index: 1001; position: relative; }
.mobile-menu-btn span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 1px; transition: all var(--transition); }
.mobile-menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端导航 */
.mobile-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: rgba(10, 22, 40, 0.99); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); max-height: 0; overflow: hidden; transition: max-height 0.4s ease; z-index: 1000; }
.mobile-nav.open { max-height: 80vh; overflow-y: auto; }
.mobile-nav-item { padding: 14px 24px; border-bottom: 1px solid var(--border-light); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; cursor: pointer; }
.mobile-nav-link { font-size: 16px; color: var(--text-secondary); font-weight: 500; flex: 1; }
.mobile-nav-link.active { color: var(--accent-light); }
.mobile-nav-toggle { padding: 4px; color: var(--text-muted); transition: transform var(--transition); background: transparent; border: none; cursor: pointer; display: flex; }
.mobile-nav-item.open .mobile-nav-toggle { transform: rotate(180deg); }
.mobile-nav-sub { width: 100%; max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.mobile-nav-sub.open { max-height: 300px; padding-top: 8px; }
.mobile-nav-sublink { display: block; padding: 8px 16px; font-size: 14px; color: var(--text-muted); border-left: 2px solid var(--border); margin-left: 12px; }
.mobile-nav-sublink:hover, .mobile-nav-sublink.active { color: var(--accent-light); border-left-color: var(--accent); }

/* ===== 通用区块 ===== */
.section { padding: 80px 24px; }
.section-alt { background: var(--bg-secondary); }
.section-container { max-width: var(--max-width); margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-label { display: inline-block; font-size: 13px; color: var(--accent-light); letter-spacing: 3px; text-transform: uppercase; margin-bottom: 12px; font-weight: 600; }
.section-title { font-size: clamp(24px, 3.5vw, 36px); font-weight: 700; margin-bottom: 16px; letter-spacing: 1px; }
.section-desc { font-size: 16px; color: var(--text-secondary); max-width: 700px; margin: 0 auto; line-height: 1.8; }
.divider { width: 60px; height: 3px; background: var(--gradient); margin: 20px auto 0; border-radius: 2px; }

/* ===== 按钮 ===== */
.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: var(--gradient); padding: 14px 36px; border-radius: 8px; font-size: 16px; font-weight: 600; color: #fff; transition: all var(--transition); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(25, 118, 210, 0.5); }
.btn-outline { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--accent-light); padding: 14px 36px; border-radius: 8px; font-size: 16px; font-weight: 600; color: var(--accent-light); transition: all var(--transition); }
.btn-outline:hover { background: rgba(0, 191, 255, 0.1); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 191, 255, 0.2); }

/* ===== Hero ===== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; padding-top: var(--nav-height); }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; background-repeat: no-repeat; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10, 22, 40, 0.92) 0%, rgba(10, 22, 40, 0.6) 50%, rgba(10, 22, 40, 0.95) 100%); }
.hero-grid-lines { position: absolute; inset: 0; background-image: linear-gradient(rgba(25, 118, 210, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(25, 118, 210, 0.05) 1px, transparent 1px); background-size: 60px 60px; pointer-events: none; }
.hero-orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.4; pointer-events: none; }
.hero-orb-1 { width: 400px; height: 400px; background: rgba(25, 118, 210, 0.5); top: 10%; right: 5%; animation: orbFloat 8s ease-in-out infinite; }
.hero-orb-2 { width: 300px; height: 300px; background: rgba(0, 229, 255, 0.3); bottom: 5%; left: 0%; animation: orbFloat 10s ease-in-out infinite reverse; }
@keyframes orbFloat { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(30px, -30px); } }
.hero-particles { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.particle { position: absolute; width: 4px; height: 4px; background: var(--accent-glow); border-radius: 50%; opacity: 0.6; animation: floatParticle 6s ease-in-out infinite; box-shadow: 0 0 8px rgba(0, 229, 255, 0.6); }
@keyframes floatParticle { 0%, 100% { transform: translateY(0) scale(1); opacity: 0.6; } 50% { transform: translateY(-30px) scale(1.5); opacity: 1; } }
.hero-content { position: relative; z-index: 2; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }
.hero-text { max-width: 900px; margin: 0 auto; text-align: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 16px; background: rgba(25, 118, 210, 0.2); border: 1px solid var(--border); border-radius: 20px; font-size: 13px; color: var(--accent-light); margin-bottom: 24px; letter-spacing: 1px; animation: fadeInUp 0.8s ease; }
.hero h1 { font-size: clamp(28px, 5vw, 52px); font-weight: 800; line-height: 1.25; margin-bottom: 20px; letter-spacing: 1px; animation: fadeInUp 0.8s ease 0.15s both; }
.hero-subtitle { font-size: clamp(15px, 2vw, 18px); color: var(--text-secondary); margin-bottom: 28px; line-height: 1.8; animation: fadeInUp 0.8s ease 0.3s both; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 36px; animation: fadeInUp 0.8s ease 0.45s both; justify-content: center; }
.hero-tag { display: inline-flex; align-items: center; gap: 6px; padding: 8px 18px; background: rgba(25, 118, 210, 0.12); border: 1px solid var(--border); border-radius: 4px; font-size: 14px; color: var(--text-secondary); transition: all var(--transition); }
.hero-tag:hover { border-color: var(--accent); background: rgba(25, 118, 210, 0.2); }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; animation: fadeInUp 0.8s ease 0.6s both; justify-content: center; }
@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.hero-scroll { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 2; animation: bounce 2s infinite; color: var(--text-muted); }
@keyframes bounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(10px); } }

/* ===== 信任状区 ===== */
.trust-section { background: var(--bg-secondary); padding: 60px 24px; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1200px; margin: 0 auto 48px; }
.trust-card { text-align: center; padding: 32px 24px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; transition: all var(--transition); position: relative; overflow: hidden; }
.trust-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient); transform: scaleX(0); transition: transform var(--transition); }
.trust-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-glow); }
.trust-card:hover::before { transform: scaleX(1); }
.trust-icon { width: 56px; height: 56px; margin: 0 auto 16px; background: var(--gradient); border-radius: 14px; display: flex; align-items: center; justify-content: center; color: #fff; }
.trust-card h3 { font-size: 18px; margin-bottom: 8px; }
.trust-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.data-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; max-width: 1200px; margin: 0 auto; }
.data-item { text-align: center; padding: 24px 16px; border-left: 1px solid var(--border-light); }
.data-item:first-child { border-left: none; }
.data-number { font-size: clamp(32px, 4vw, 48px); font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; font-family: 'Inter', sans-serif; }
.data-label { font-size: 13px; color: var(--text-secondary); margin-top: 8px; }

/* ===== 四大产品线 ===== */
.product-lines-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-line-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 32px 24px; transition: all var(--transition); text-align: center; position: relative; overflow: hidden; }
.product-line-card::before { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 4px; background: var(--gradient); transform: scaleX(0); transition: transform var(--transition); }
.product-line-card:hover { transform: translateY(-6px); border-color: var(--accent); box-shadow: var(--shadow-hover); }
.product-line-card:hover::before { transform: scaleX(1); }
.product-line-icon { width: 64px; height: 64px; margin: 0 auto 20px; background: rgba(25, 118, 210, 0.15); border: 1px solid var(--border); border-radius: 16px; display: flex; align-items: center; justify-content: center; color: var(--accent-light); }
.product-line-card h3 { font-size: 18px; margin-bottom: 10px; }
.product-line-card .desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.product-line-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.product-line-tags .tag { font-size: 11px; padding: 3px 10px; background: rgba(25, 118, 210, 0.15); color: var(--accent-light); border-radius: 4px; }

/* ===== Masonry解决方案布局 ===== */
.solutions-masonry { display: grid; grid-template-columns: 1fr 1.5fr; gap: 20px; align-items: stretch; }
.solutions-right-grid { display: grid; grid-template-columns: repeat(3, 1fr); grid-template-rows: 1fr 1fr; gap: 20px; }
.solution-masonry-item { position: relative; border-radius: 12px; overflow: hidden; cursor: pointer; border: 1px solid var(--border); transition: all var(--transition); display: block; height: 100%; }
.solution-masonry-item:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.solution-masonry-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.solution-masonry-item:hover img { transform: scale(1.08); }
.solution-masonry-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 22, 40, 0.95) 0%, rgba(10, 22, 40, 0.4) 60%, transparent 100%); display: flex; flex-direction: column; justify-content: flex-end; padding: 28px; }
.solution-masonry-overlay .region-badge { display: inline-block; font-size: 11px; padding: 3px 12px; background: rgba(25, 118, 210, 0.85); border-radius: 20px; color: #fff; margin-bottom: 8px; letter-spacing: 1px; text-transform: uppercase; align-self: flex-start; }
.solution-masonry-overlay h3 { font-size: 22px; margin-bottom: 8px; }
.solution-masonry-overlay p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; opacity: 0; max-height: 0; transition: all var(--transition); }
.solution-masonry-item:hover .solution-masonry-overlay p { opacity: 1; max-height: 100px; }
.solution-masonry-overlay .discover { font-size: 13px; color: var(--accent-light); margin-top: 10px; display: inline-flex; align-items: center; gap: 4px; }
.solution-masonry-large { min-height: 440px; }
.solution-masonry-large .solution-masonry-overlay h3 { font-size: 28px; }
.solution-masonry-small { min-height: 210px; }

/* ===== 核心优势 ===== */
.advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.advantage-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 36px 28px; transition: all var(--transition); }
.advantage-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-glow); }
.advantage-card .icon { width: 52px; height: 52px; background: var(--gradient); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #fff; margin-bottom: 20px; }
.advantage-card h3 { font-size: 20px; margin-bottom: 12px; }
.advantage-card ul { margin-top: 16px; }
.advantage-card ul li { padding: 6px 0 6px 24px; position: relative; font-size: 14px; color: var(--text-secondary); }
.advantage-card ul li::before { content: ''; position: absolute; left: 0; top: 14px; width: 8px; height: 8px; background: var(--gradient); border-radius: 50%; }

/* ===== 案例卡片 ===== */
.cases-filter { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 40px; }
.filter-btn { display: inline-flex; align-items: center; padding: 8px 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; color: var(--text-secondary); font-size: 14px; transition: all var(--transition); cursor: pointer; }
.filter-btn:hover, .filter-btn.active { color: var(--accent-light); border-color: var(--accent); }
.filter-btn.active { background: var(--gradient); color: #fff; border-color: transparent; }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all var(--transition); display: flex; flex-direction: column; }
.case-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-hover); }
.case-card.hidden { display: none; }
.case-img { height: 200px; overflow: hidden; position: relative; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.case-card:hover .case-img img { transform: scale(1.05); }
.case-tag { position: absolute; top: 16px; left: 16px; padding: 4px 12px; background: rgba(25, 118, 210, 0.9); border-radius: 4px; font-size: 12px; font-weight: 600; z-index: 1; }
.case-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.case-body h3 { font-size: 17px; margin-bottom: 10px; }
.case-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; flex: 1; }
.case-results { display: flex; gap: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.case-result { flex: 1; }
.case-result .num { font-size: 20px; font-weight: 700; color: var(--accent-light); font-family: 'Inter', sans-serif; }
.case-result .label { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* ===== 企业宣传片 ===== */
.video-section { position: relative; padding: 80px 24px; overflow: hidden; }
.video-wrapper { max-width: 1280px; margin: 0 auto; position: relative; }
.video-wrapper video { width: 100%; border-radius: 12px; border: 1px solid var(--border); box-shadow: var(--shadow-card); display: block; }
.video-desc { text-align: center; margin-top: 24px; }
.video-desc h3 { font-size: 22px; margin-bottom: 10px; }
.video-desc p { font-size: 15px; color: var(--text-secondary); }

/* ===== 合作伙伴Logo墙 ===== */
.partner-section { padding: 80px 24px; }
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.partner-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 24px 20px; text-align: center; transition: all var(--transition); display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 140px; }
.partner-card:hover { border-color: var(--accent); background: var(--bg-card-hover); transform: translateY(-3px); }
.partner-card img { width: 60px; height: 60px; object-fit: contain; margin-bottom: 10px; filter: grayscale(100%); opacity: 0.7; transition: all var(--transition); }
.partner-card:hover img { filter: grayscale(0); opacity: 1; }
.partner-card .name { font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.partner-card:hover .name { color: var(--text-primary); }
.partner-pillars { display: flex; justify-content: center; gap: 40px; margin-top: 40px; flex-wrap: wrap; }
.partner-pillar { text-align: center; }
.partner-pillar .pillar-icon { width: 48px; height: 48px; margin: 0 auto 8px; background: rgba(25, 118, 210, 0.15); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--accent-light); }
.partner-pillar .pillar-text { font-size: 14px; color: var(--text-secondary); }

/* ===== 产品服务 ===== */
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.product-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all var(--transition); cursor: pointer; display: flex; flex-direction: column; }
.product-card:hover { transform: translateY(-6px); border-color: var(--accent); box-shadow: var(--shadow-hover); }
.product-img { height: 200px; overflow: hidden; position: relative; }
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.product-card:hover .product-img img { transform: scale(1.08); }
.product-img-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(19, 39, 68, 0.9), transparent); }
.product-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.product-body h3 { font-size: 18px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.product-body h3::before { content: ''; width: 4px; height: 18px; background: var(--gradient); border-radius: 2px; flex-shrink: 0; }
.product-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; flex: 1; }
.product-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.product-tag { font-size: 12px; padding: 3px 10px; background: rgba(25, 118, 210, 0.15); color: var(--accent-light); border-radius: 4px; }
.product-link { margin-top: 14px; display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--accent-light); font-weight: 600; }

/* ===== 解决方案（旧grid） ===== */
.solutions-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.solution-card { position: relative; height: 300px; border-radius: 12px; overflow: hidden; cursor: pointer; border: 1px solid var(--border); transition: all var(--transition); display: block; }
.solution-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.solution-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.solution-card:hover img { transform: scale(1.1); }
.solution-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 22, 40, 0.95) 0%, rgba(10, 22, 40, 0.4) 60%, transparent 100%); display: flex; flex-direction: column; justify-content: flex-end; padding: 28px; }
.solution-overlay h3 { font-size: 20px; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.solution-overlay h3 .num { font-size: 14px; color: var(--accent-light); font-weight: 400; }
.solution-overlay p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; opacity: 0; max-height: 0; transition: all var(--transition); }
.solution-card:hover .solution-overlay p { opacity: 1; max-height: 80px; margin-top: 8px; }

/* ===== 技术实力 ===== */
.tech-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.tech-visual { border-radius: 12px; overflow: hidden; border: 1px solid var(--border); position: relative; }
.tech-visual img { width: 100%; height: auto; }
.tech-visual-tag { position: absolute; bottom: 16px; left: 16px; padding: 6px 16px; background: rgba(25, 118, 210, 0.85); border-radius: 6px; font-size: 13px; font-weight: 600; }
.tech-content h3 { font-size: 24px; margin-bottom: 20px; }
.tech-list li { padding: 16px 0; border-bottom: 1px solid var(--border); display: flex; gap: 16px; align-items: flex-start; }
.tech-list li:last-child { border-bottom: none; }
.tech-icon { width: 40px; height: 40px; min-width: 40px; background: rgba(25, 118, 210, 0.15); border: 1px solid var(--border); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--accent-light); }
.tech-list h4 { font-size: 15px; margin-bottom: 4px; }
.tech-list p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* ===== 服务流程 ===== */
.flow-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; position: relative; }
.flow-step { text-align: center; position: relative; padding: 24px 12px; }
.flow-line { position: absolute; top: 48px; right: -8px; width: 16px; height: 2px; background: var(--border); }
.flow-step:last-child .flow-line { display: none; }
.flow-num { width: 56px; height: 56px; margin: 0 auto 16px; background: var(--bg-card); border: 2px solid var(--accent); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 700; color: var(--accent-light); position: relative; z-index: 2; transition: all var(--transition); font-family: 'Inter', sans-serif; }
.flow-step:hover .flow-num { background: var(--gradient); color: #fff; transform: scale(1.1); box-shadow: 0 0 20px rgba(25, 118, 210, 0.4); }
.flow-step h4 { font-size: 15px; margin-bottom: 6px; }
.flow-step p { font-size: 12px; color: var(--text-muted); }

/* ===== 交付物 ===== */
.deliverable-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.deliverable-visual { border-radius: 12px; overflow: hidden; border: 1px solid var(--border); }
.deliverable-visual img { width: 100%; }
.deliverable-content h3 { font-size: 24px; margin-bottom: 20px; }
.deliverable-items { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.deliverable-item { padding: 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; transition: all var(--transition); }
.deliverable-item:hover { border-color: var(--accent); background: var(--bg-card-hover); transform: translateY(-2px); }
.deliverable-icon { color: var(--accent-light); margin-bottom: 8px; }
.deliverable-item h4 { font-size: 14px; margin-bottom: 4px; }
.deliverable-item p { font-size: 12px; color: var(--text-muted); line-height: 1.6; }

/* ===== 关于我们摘要 ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.about-visual { border-radius: 12px; overflow: hidden; border: 1px solid var(--border); }
.about-visual img { width: 100%; }
.about-content h3 { font-size: 24px; margin-bottom: 16px; }
.about-content p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.about-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.about-highlight { padding: 14px; background: var(--bg-card); border-left: 3px solid var(--accent); border-radius: 0 8px 8px 0; transition: all var(--transition); }
.about-highlight:hover { background: var(--bg-card-hover); transform: translateX(4px); }
.about-hl-icon { color: var(--accent-light); margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.about-highlight h4 { font-size: 14px; margin-bottom: 4px; }
.about-highlight p { font-size: 12px; color: var(--text-muted); margin: 0; line-height: 1.5; }

/* ===== 联系表单 ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info h3 { font-size: 24px; margin-bottom: 24px; }
.contact-item { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border-light); }
.contact-icon { width: 44px; height: 44px; min-width: 44px; background: rgba(25, 118, 210, 0.15); border: 1px solid var(--border); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--accent-light); }
.contact-item h4 { font-size: 14px; margin-bottom: 4px; color: var(--text-secondary); }
.contact-item p { font-size: 15px; }
.contact-map { margin-top: 24px; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); }
.contact-map img { width: 100%; }
.contact-form { background: var(--bg-card); padding: 32px; border-radius: 12px; border: 1px solid var(--border); position: relative; }
.contact-form h3 { font-size: 20px; margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.required { color: var(--accent-light); }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 12px 16px; background: var(--bg-primary); border: 1px solid var(--border); border-radius: 8px; color: var(--text-primary); font-size: 14px; transition: border-color var(--transition); font-family: inherit; }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1); }
.form-group input.error, .form-group select.error { border-color: #f44336; }
.form-error { display: block; font-size: 12px; color: #f44336; margin-top: 4px; min-height: 16px; }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.submit-btn { width: 100%; padding: 14px; background: var(--gradient); border-radius: 8px; color: #fff; font-size: 16px; font-weight: 600; display: flex; align-items: center; justify-content: center; gap: 8px; transition: all var(--transition); }
.submit-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(25, 118, 210, 0.4); }
.form-success { position: absolute; inset: 0; background: var(--bg-card); border-radius: 12px; display: none; flex-direction: column; align-items: center; justify-content: center; gap: 16px; text-align: center; padding: 32px; z-index: 10; }
.form-success.show { display: flex; animation: fadeIn 0.4s ease; }
.form-success svg { color: var(--accent-light); }
.form-success p { font-size: 16px; color: var(--text-primary); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ===== 页脚 ===== */
.footer { background: #060d1a; padding: 48px 24px 24px; border-top: 1px solid var(--border); }
.footer-container { max-width: var(--max-width); margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; }
.footer-contact { margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.footer-contact a { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.footer-contact a:hover { color: var(--accent-light); }
.footer-col h4 { font-size: 14px; margin-bottom: 16px; color: var(--accent-light); }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.footer-col a:hover { color: var(--accent-light); }
.footer-bottom { text-align: center; padding-top: 24px; border-top: 1px solid var(--border); font-size: 12px; color: var(--text-muted); }

/* ===== 回到顶部 ===== */
.back-to-top { position: fixed; bottom: 32px; right: 32px; width: 48px; height: 48px; background: var(--gradient); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; opacity: 0; visibility: hidden; transform: translateY(20px); transition: all var(--transition); z-index: 999; box-shadow: 0 4px 20px rgba(25, 118, 210, 0.4); }
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(25, 118, 210, 0.5); }

/* ===== 滚动揭示动画 ===== */
.reveal { opacity: 0; transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal[data-reveal="fade-up"] { transform: translateY(40px); }
.reveal[data-reveal="fade-left"] { transform: translateX(-40px); }
.reveal[data-reveal="fade-right"] { transform: translateX(40px); }
.reveal.visible { opacity: 1; transform: translate(0, 0); }

/* ===== 内页 Banner ===== */
.page-banner { position: relative; min-height: 320px; display: flex; align-items: center; justify-content: center; overflow: hidden; padding-top: var(--nav-height); text-align: center; }
.page-banner-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.page-banner-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10, 22, 40, 0.92) 0%, rgba(10, 22, 40, 0.7) 50%, rgba(10, 22, 40, 0.95) 100%); }
.page-banner-content { position: relative; z-index: 2; max-width: 700px; padding: 0 24px; }
.page-banner h1 { font-size: clamp(26px, 4vw, 40px); font-weight: 700; margin-bottom: 12px; letter-spacing: 1px; animation: fadeInUp 0.8s ease; }
.page-banner p { font-size: 16px; color: var(--text-secondary); animation: fadeInUp 0.8s ease 0.2s both; }
.page-banner-label { display: inline-block; font-size: 13px; color: var(--accent-light); letter-spacing: 3px; text-transform: uppercase; margin-bottom: 12px; font-weight: 600; }

/* ===== 内页通用 ===== */
.page-section { padding: 80px 24px; }
.page-content { max-width: var(--max-width); margin: 0 auto; }

/* ===== 详情页通用 ===== */
.detail-grid { display: grid; grid-template-columns: 1fr 320px; gap: 40px; align-items: start; }
.detail-main h2 { font-size: 28px; margin-bottom: 20px; margin-top: 40px; }
.detail-main h2:first-child { margin-top: 0; }
.detail-main p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.detail-main ul { margin-bottom: 20px; }
.detail-main ul li { padding: 8px 0 8px 24px; position: relative; color: var(--text-secondary); font-size: 15px; }
.detail-main ul li::before { content: ''; position: absolute; left: 0; top: 16px; width: 8px; height: 8px; background: var(--gradient); border-radius: 50%; }
.detail-img { border-radius: 12px; overflow: hidden; border: 1px solid var(--border); margin: 24px 0; }
.detail-img img { width: 100%; }
.detail-sidebar { position: sticky; top: 100px; }
.sidebar-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 20px; }
.sidebar-card h4 { font-size: 16px; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.sidebar-list li { padding: 10px 0; border-bottom: 1px solid var(--border-light); }
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a { display: flex; align-items: center; justify-content: space-between; font-size: 14px; color: var(--text-secondary); transition: color var(--transition); }
.sidebar-list a:hover { color: var(--accent-light); }
.sidebar-list .active a { color: var(--accent-light); font-weight: 600; }

/* ===== 产品列表页（Tab切换） ===== */
.product-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 40px; }
.product-tab { padding: 10px 24px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; color: var(--text-secondary); font-size: 14px; font-weight: 500; transition: all var(--transition); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.product-tab:hover { color: var(--accent-light); border-color: var(--accent); }
.product-tab.active { background: var(--gradient); color: #fff; border-color: transparent; }
.product-tab-panel { display: none; }
.product-tab-panel.active { display: block; animation: fadeIn 0.4s ease; }
.product-list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-list-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all var(--transition); display: flex; flex-direction: column; }
.product-list-item:hover { border-color: var(--accent); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.product-list-item .img { height: 200px; overflow: hidden; }
.product-list-item .img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.product-list-item:hover .img img { transform: scale(1.05); }
.product-list-item .body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-list-item .body h3 { font-size: 17px; margin-bottom: 10px; }
.product-list-item .body .params { margin-bottom: 12px; }
.product-list-item .body .params li { font-size: 12px; color: var(--text-muted); padding: 3px 0 3px 16px; position: relative; }
.product-list-item .body .params li::before { content: ''; position: absolute; left: 0; top: 11px; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
.product-list-item .body .scene-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 12px; }
.product-list-item .body .scene-tags .tag { font-size: 11px; padding: 2px 8px; background: rgba(76, 175, 80, 0.15); color: var(--accent-green); border-radius: 4px; }
.product-list-item .body .btn-group { display: flex; gap: 8px; margin-top: auto; }
.product-list-item .body .btn-group a { flex: 1; text-align: center; padding: 8px 12px; border-radius: 6px; font-size: 13px; font-weight: 600; transition: all var(--transition); }
.product-list-item .body .btn-detail { background: rgba(25, 118, 210, 0.15); color: var(--accent-light); border: 1px solid var(--border); }
.product-list-item .body .btn-detail:hover { background: var(--accent); color: #fff; }
.product-list-item .body .btn-inquiry { background: var(--gradient); color: #fff; }
.product-list-item .body .btn-inquiry:hover { transform: translateY(-1px); box-shadow: 0 4px 15px rgba(25, 118, 210, 0.4); }

/* ===== 技术参数表 ===== */
.spec-table { width: 100%; border-collapse: collapse; margin: 24px 0; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); }
.spec-table th, .spec-table td { padding: 14px 20px; text-align: left; border-bottom: 1px solid var(--border-light); font-size: 14px; }
.spec-table th { background: var(--bg-card-hover); color: var(--accent-light); font-weight: 600; white-space: nowrap; width: 200px; }
.spec-table td { color: var(--text-secondary); }
.spec-table tr:last-child td { border-bottom: none; }
.spec-table tr:hover td { background: rgba(25, 118, 210, 0.05); }

/* ===== 选型指南 ===== */
.guide-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin: 24px 0; }
.guide-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; transition: all var(--transition); }
.guide-card:hover { border-color: var(--accent); }
.guide-card .guide-icon { width: 40px; height: 40px; background: rgba(25, 118, 210, 0.15); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--accent-light); margin-bottom: 12px; }
.guide-card h4 { font-size: 15px; margin-bottom: 6px; }
.guide-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 方案详情页 - 架构图 ===== */
.arch-diagram { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 32px; margin: 24px 0; }
.arch-layers { display: flex; flex-direction: column; gap: 12px; }
.arch-layer { display: flex; align-items: center; gap: 16px; padding: 16px 20px; border-radius: 8px; border: 1px solid var(--border); transition: all var(--transition); }
.arch-layer:hover { border-color: var(--accent); background: var(--bg-card-hover); }
.arch-layer-num { width: 36px; height: 36px; min-width: 36px; background: var(--gradient); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 14px; }
.arch-layer-content h4 { font-size: 15px; margin-bottom: 4px; }
.arch-layer-content p { font-size: 13px; color: var(--text-muted); }

/* ===== 方案详情页 - 方案构成 ===== */
.scheme-composition { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin: 24px 0; }
.scheme-comp-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 24px; transition: all var(--transition); }
.scheme-comp-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.scheme-comp-card .comp-icon { width: 44px; height: 44px; background: rgba(25, 118, 210, 0.15); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--accent-light); margin-bottom: 12px; }
.scheme-comp-card h4 { font-size: 16px; margin-bottom: 8px; }
.scheme-comp-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ===== 方案详情页 - 痛点 ===== */
.solu-pain-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 32px 0; }
.pain-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 24px; transition: all var(--transition); }
.pain-card:hover { border-color: var(--accent-red); }
.pain-card .icon { width: 40px; height: 40px; background: rgba(244, 67, 54, 0.15); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--accent-red); margin-bottom: 12px; }
.pain-card h4 { font-size: 16px; margin-bottom: 8px; }
.pain-card p { font-size: 13px; color: var(--text-muted); }

/* ===== 方案亮点 ===== */
.highlight-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin: 24px 0; }
.highlight-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 24px; transition: all var(--transition); position: relative; overflow: hidden; }
.highlight-card::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--gradient); }
.highlight-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.highlight-card .hl-icon { width: 40px; height: 40px; background: rgba(25, 118, 210, 0.15); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--accent-light); margin-bottom: 12px; }
.highlight-card h4 { font-size: 15px; margin-bottom: 6px; }
.highlight-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 案例详情页 ===== */
.case-detail-header { text-align: center; margin-bottom: 40px; }
.case-detail-header h2 { font-size: 28px; margin-bottom: 12px; }
.case-meta { display: flex; justify-content: center; gap: 24px; font-size: 14px; color: var(--text-muted); }
.case-detail-body { max-width: 800px; margin: 0 auto; }
.case-detail-body h3 { font-size: 20px; margin: 32px 0 16px; }
.case-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 32px 0; }
.case-stat { text-align: center; padding: 24px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; }
.case-stat .num { font-size: 28px; font-weight: 800; color: var(--accent-light); font-family: 'Inter', sans-serif; }
.case-stat .label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== 技术实力页 ===== */
.tech-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 40px; }
.tech-tab { padding: 8px 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; color: var(--text-secondary); font-size: 14px; transition: all var(--transition); cursor: pointer; }
.tech-tab:hover { color: var(--accent-light); border-color: var(--accent); }
.tech-tab.active { background: var(--gradient); color: #fff; border-color: transparent; }
.ip-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.ip-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; transition: all var(--transition); }
.ip-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.ip-card .num { font-size: 32px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; font-family: 'Inter', sans-serif; }
.ip-card h4 { font-size: 16px; margin: 8px 0; }
.ip-card p { font-size: 13px; color: var(--text-muted); }

/* 资质认证卡片 */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.cert-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all var(--transition); text-align: center; }
.cert-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.cert-card .cert-img { height: 200px; overflow: hidden; }
.cert-card .cert-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.cert-card:hover .cert-img img { transform: scale(1.05); }
.cert-card .cert-body { padding: 20px; }
.cert-card .cert-body h4 { font-size: 15px; margin-bottom: 4px; }
.cert-card .cert-body p { font-size: 12px; color: var(--text-muted); }

/* 资质认证轮播 */
.cert-section { padding: 80px 24px; }
.cert-section .section-header { margin-bottom: 40px; }
.cert-carousel { position: relative; overflow: hidden; padding: 0 20px; max-width: 1300px; margin: 0 auto; }
.cert-carousel-track { display: flex; transition: transform 0.5s ease; }
.cert-carousel-slide { flex: 0 0 25%; padding: 0 10px; box-sizing: border-box; }
.cert-carousel-btn { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border-radius: 50%; background: var(--bg-card); border: 1px solid var(--border); color: var(--text-primary); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all var(--transition); z-index: 2; }
.cert-carousel-btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.cert-carousel-btn.prev { left: -10px; }
.cert-carousel-btn.next { right: -10px; }
.cert-carousel-dots { display: flex; justify-content: center; gap: 8px; margin-top: 24px; }
.cert-carousel-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); cursor: pointer; transition: all var(--transition); border: none; }
.cert-carousel-dot.active { background: var(--gradient); width: 28px; border-radius: 5px; }
@media (max-width: 968px) { .cert-carousel-slide { flex: 0 0 33.333%; } }
@media (max-width: 576px) { .cert-carousel-slide { flex: 0 0 80%; } }

/* ===== 关于我们页 ===== */
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 30px; top: 0; bottom: 0; width: 2px; background: var(--border); }
.timeline-item { position: relative; padding-left: 80px; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot { position: absolute; left: 21px; top: 4px; width: 20px; height: 20px; background: var(--bg-primary); border: 3px solid var(--accent); border-radius: 50%; z-index: 2; }
.timeline-dot::after { content: ''; position: absolute; inset: 2px; background: var(--gradient); border-radius: 50%; opacity: 0; transition: opacity var(--transition); }
.timeline-item:hover .timeline-dot::after { opacity: 1; }
.timeline-year { font-size: 18px; font-weight: 700; color: var(--accent-light); font-family: 'Inter', sans-serif; margin-bottom: 6px; }
.timeline-content { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; transition: all var(--transition); }
.timeline-content:hover { border-color: var(--accent); }
.timeline-content h4 { font-size: 16px; margin-bottom: 8px; }
.timeline-content p { font-size: 14px; color: var(--text-secondary); }

.team-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; }
.team-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all var(--transition); text-align: center; }
.team-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.team-avatar { width: 120px; height: 120px; border-radius: 50%; overflow: hidden; margin: 24px auto 16px; border: 3px solid var(--border); }
.team-avatar img { width: 100%; height: 100%; object-fit: cover; }
.team-card h4 { font-size: 17px; margin-bottom: 4px; }
.team-card .role { font-size: 14px; color: var(--accent-light); margin-bottom: 12px; }
.team-card .bio { font-size: 13px; color: var(--text-muted); padding: 0 20px 24px; line-height: 1.6; }

.value-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; }
.value-card { text-align: center; padding: 32px 24px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; transition: all var(--transition); }
.value-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.value-icon { width: 56px; height: 56px; margin: 0 auto 16px; background: rgba(25, 118, 210, 0.15); border: 1px solid var(--border); border-radius: 14px; display: flex; align-items: center; justify-content: center; color: var(--accent-light); }

/* ===== 新闻列表页 ===== */
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.news-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all var(--transition); display: flex; flex-direction: column; }
.news-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.news-img { height: 180px; overflow: hidden; }
.news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.news-card:hover .news-img img { transform: scale(1.05); }
.news-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.news-cat { display: inline-block; font-size: 12px; padding: 3px 10px; background: rgba(25, 118, 210, 0.15); color: var(--accent-light); border-radius: 4px; margin-bottom: 10px; align-self: flex-start; }
.news-body h3 { font-size: 16px; margin-bottom: 8px; line-height: 1.4; }
.news-body p { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 12px; flex: 1; }
.news-date { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }

/* 新闻详情页 */
.news-detail { max-width: 800px; margin: 0 auto; }
.news-detail-header { text-align: center; margin-bottom: 40px; }
.news-detail-header h1 { font-size: 28px; margin-bottom: 16px; }
.news-detail-meta { display: flex; justify-content: center; gap: 24px; font-size: 14px; color: var(--text-muted); }
.news-detail-body { font-size: 15px; line-height: 1.8; color: var(--text-secondary); }
.news-detail-body p { margin-bottom: 20px; }
.news-detail-body h2 { font-size: 22px; margin: 32px 0 16px; color: var(--text-primary); }
.news-detail-body img { border-radius: 12px; margin: 24px 0; border: 1px solid var(--border); }
.news-detail-body ul { margin-bottom: 20px; }
.news-detail-body ul li { padding: 8px 0 8px 24px; position: relative; }
.news-detail-body ul li::before { content: ''; position: absolute; left: 0; top: 16px; width: 8px; height: 8px; background: var(--gradient); border-radius: 50%; }
.news-nav { display: flex; justify-content: space-between; gap: 24px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); }
.news-nav-item { flex: 1; padding: 16px 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; transition: all var(--transition); display: block; }
.news-nav-item:hover { border-color: var(--accent); background: var(--bg-card-hover); }
.news-nav-item.prev { text-align: left; }
.news-nav-item.next { text-align: right; }
.news-nav-label { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 1px; }
.news-nav-title { font-size: 15px; color: var(--text-primary); font-weight: 500; line-height: 1.5; }
.news-nav-item:hover .news-nav-title { color: var(--accent-light); }

/* ===== 分页 ===== */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 48px; flex-wrap: wrap; }
.pagination a, .pagination span, .page-btn { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; color: var(--text-secondary); font-size: 14px; transition: all var(--transition); }
.pagination a:hover, .page-btn:hover { color: var(--accent-light); border-color: var(--accent); background: var(--bg-card-hover); }
.pagination .current, .pagination .active, .page-btn.active { background: var(--gradient); color: #fff; border-color: transparent; }
.pagination .prev, .pagination .next { font-weight: 600; }

/* ===== 相关产品推荐 ===== */
.related-section { background: var(--bg-secondary); padding: 70px 24px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all var(--transition); display: block; }
.related-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-hover); }
.related-card-img { height: 180px; overflow: hidden; }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.related-card:hover .related-card-img img { transform: scale(1.06); }
.related-card-body { padding: 20px; }
.related-card-body h4 { font-size: 16px; margin-bottom: 8px; }
.related-card-body p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 详情页单列布局 ===== */
.detail-main-full { max-width: 900px; margin: 0 auto; }
.detail-main-full .detail-img { margin-bottom: 32px; }
.detail-main-full h2 { font-size: 24px; margin: 32px 0 16px; color: var(--text-primary); }
.detail-main-full h3 { font-size: 20px; margin: 28px 0 14px; color: var(--text-primary); }
.detail-main-full p { font-size: 15px; line-height: 1.9; color: var(--text-secondary); margin-bottom: 18px; }
.detail-main-full ul { margin-bottom: 20px; }
.detail-main-full ul li { padding: 8px 0 8px 24px; position: relative; font-size: 15px; color: var(--text-secondary); }
.detail-main-full ul li::before { content: ''; position: absolute; left: 0; top: 16px; width: 8px; height: 8px; background: var(--gradient); border-radius: 50%; }

/* ===== 试用申请表单 ===== */
.trial-form-section { max-width: 700px; margin: 0 auto; }
.trial-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.trial-form-grid .full { grid-column: 1 / -1; }

/* ===== 视频弹窗 ===== */
.video-modal { position: fixed; inset: 0; z-index: 9000; background: rgba(0, 0, 0, 0.9); display: none; align-items: center; justify-content: center; padding: 24px; }
.video-modal.show { display: flex; }
.video-modal iframe { width: 80%; max-width: 900px; aspect-ratio: 16/9; border: none; border-radius: 12px; }
.video-close { position: absolute; top: 24px; right: 24px; width: 44px; height: 44px; border-radius: 50%; background: rgba(255, 255, 255, 0.1); color: #fff; font-size: 24px; display: flex; align-items: center; justify-content: center; transition: all var(--transition); }
.video-close:hover { background: rgba(255, 255, 255, 0.2); transform: rotate(90deg); }

/* ===== 图片放大 ===== */
.image-zoom-overlay { position: fixed; inset: 0; z-index: 9000; background: rgba(0, 0, 0, 0.9); display: none; align-items: center; justify-content: center; padding: 40px; }
.image-zoom-overlay.show { display: flex; }
.image-zoom-overlay img { max-width: 90%; max-height: 85vh; border-radius: 12px; border: 1px solid var(--border); }
.zoom-close { position: absolute; top: 24px; right: 24px; width: 44px; height: 44px; border-radius: 50%; background: rgba(255, 255, 255, 0.1); color: #fff; font-size: 28px; display: flex; align-items: center; justify-content: center; }

/* ===== CTA 区域 ===== */
.cta-section { background: #0a1628; padding: 60px 24px; text-align: center; }
.cta-box { max-width: 700px; margin: 0 auto; }
.cta-box h3 { font-size: 28px; margin-bottom: 12px; }
.cta-box p { font-size: 16px; color: var(--text-secondary); margin-bottom: 24px; }

/* ===== 锚点偏移 ===== */
[id] { scroll-margin-top: calc(var(--nav-height) + 20px); }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
  .nav-links { gap: 24px; }
  .nav-link { font-size: 14px; }
  .cases-grid, .news-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
  .product-list-grid { grid-template-columns: repeat(2, 1fr); }
  .product-lines-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .data-grid { grid-template-columns: repeat(3, 1fr); }
  .advantage-grid { grid-template-columns: 1fr; }
}
@media (max-width: 968px) {
  :root { --nav-height: 64px; }
  .nav-links, .nav-actions { display: none; }
  .nav-phone { display: none; }
  .mobile-menu-btn { display: flex; }
  .mobile-nav { display: block; }
  .tech-grid, .deliverable-grid, .about-grid, .contact-grid, .detail-grid { grid-template-columns: 1fr; }
  .detail-sidebar { position: static; }
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .flow-line { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 26px; }
  .hero-subtitle { font-size: 15px; }
  .section { padding: 60px 16px; }
  .section-title { font-size: 24px; }
  .products-grid, .solutions-grid, .cases-grid, .news-grid { grid-template-columns: 1fr; }
  .product-list-grid { grid-template-columns: 1fr; }
  .product-lines-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .trial-form-grid { grid-template-columns: 1fr; }
  .deliverable-items, .about-highlights { grid-template-columns: 1fr 1fr; }
  .case-results { gap: 12px; }
  .case-result .num { font-size: 16px; }
  .solu-pain-points { grid-template-columns: 1fr; }
  .scheme-composition { grid-template-columns: 1fr; }
  .case-stats { grid-template-columns: repeat(2, 1fr); }
  .news-nav { flex-direction: column; gap: 12px; }
  .solutions-masonry { grid-template-columns: 1fr; }
  .solutions-right-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-masonry-large { min-height: 300px; }
  .trust-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .data-item { border-left: none; }
  .advantage-grid { grid-template-columns: 1fr; }
  .partner-pillars { gap: 20px; }
}
@media (max-width: 576px) {
  .nav-container { padding: 0 16px; }
  .logo { font-size: 16px; }
  .hero { min-height: 100vh; padding: 80px 16px 40px; }
  .hero-buttons { flex-direction: column; align-items: stretch; }
  .btn-primary, .btn-outline { justify-content: center; }
  .data-grid { grid-template-columns: 1fr 1fr; }
  .flow-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer { padding: 32px 16px 16px; }
  .deliverable-items, .about-highlights { grid-template-columns: 1fr; }
  .case-img { height: 160px; }
  .product-img { height: 160px; }
  .solution-card { height: 220px; }
  .contact-form { padding: 20px; }
  .section { padding: 48px 16px; }
  .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
  .cases-filter { gap: 6px; }
  .filter-btn { padding: 6px 14px; font-size: 13px; }
  .case-stats { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .logo-img { height: 38px; }
  .partner-grid { grid-template-columns: 1fr; }
  .product-tabs { gap: 6px; }
  .product-tab { padding: 8px 16px; font-size: 13px; }
  .cert-carousel { padding: 0 12px; max-width: 100%; }
  .cert-card .cert-img { height: 160px; }
  .cert-card .cert-body { padding: 14px; }
  .cert-card .cert-body h4 { font-size: 14px; }
  .cert-carousel-btn { width: 36px; height: 36px; }
  .cert-carousel-btn.prev { left: -4px; }
  .cert-carousel-btn.next { right: -4px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ===== 视频弹窗（补充） ===== */
.video-modal-content { position: relative; width: 100%; max-width: 960px; }
.video-modal-close { position: absolute; right: -12px; top: -44px; background: transparent; border: none; color: #fff; cursor: pointer; outline: none; padding: 4px; }
.video-modal-content iframe { width: 100%; aspect-ratio: 16/9; border: 0; border-radius: 12px; }