/* ================================================================
   睿洲科技官网 · 全局样式
   设计理念：科技蓝主调 + 大量留白 + 卡片层次感 + 微动效
   美学原则：8px间距体系 · 严谨字体层次 · 渐变光效 · 柔和阴影
   字体：系统字体栈（PingFang SC / Microsoft YaHei），零外部请求
   ================================================================ */

/* Google Fonts 已移至 HTML <link> 标签加载，避免 @import 阻塞渲染 */
/* ===== 设计变量 ===== */
:root {
    --primary: #1a5fb4;
    --primary-dark: #0d3a6e;
    --primary-darker: #082448;
    --primary-light: #4a8fd4;
    --primary-lighter: #6ba8e0;
    --accent: #ff6b35;
    --accent-light: #ff8a5b;
    --cyan: #5AC8FA;
    --cyan-light: #7FD8FF;
    --dark: #0f1729;
    --text: #2d3748;
    --text-light: #4a5568;
    --gray: #f5f7fa;
    --gray-light: #fafbfd;
    --gray-mid: #e8edf3;
    --gray-dark: #646e7a;
    --white: #ffffff;
    --shadow-xs: 0 1px 3px rgba(13,58,110,0.04);
    --shadow-sm: 0 2px 8px rgba(13,58,110,0.06);
    --shadow: 0 8px 30px rgba(13,58,110,0.08);
    --shadow-hover: 0 20px 60px rgba(13,58,110,0.16);
    --shadow-glow: 0 0 40px rgba(90,200,250,0.15);
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-heading: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--text);
    line-height: 1.75;
    overflow-x: hidden;
    background: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== 导航栏 ===== */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    z-index: 1000;
    box-shadow: 0 1px 0 rgba(13,58,110,0.06), 0 4px 20px rgba(13,58,110,0.03);
    transition: var(--transition);
}
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
    height: 68px;
}
.logo {
    display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
    text-decoration: none;
}
.logo-main { display: flex; align-items: center; gap: 6px; line-height: 1.1; }
.logo-sub {
    font-size: 10px; color: #fff; letter-spacing: 2px;
    font-weight: 800; text-transform: uppercase;
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    padding: 0 6px; border-radius: 3px;
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.35),
        inset 0 -1px 1px rgba(0,0,0,0.2),
        0 1px 2px rgba(6,182,212,0.4),
        0 0 0 1px rgba(6,182,212,0.15);
    text-shadow: 0 1px 0 rgba(0,0,0,0.25);
    border: 1px solid rgba(6,182,212,0.5);
    line-height: 1;
    height: calc(19px * 1.1);
    display: inline-flex; align-items: center; justify-content: center;
}
.logo-text {
    font-size: 19px; font-weight: 700; color: var(--primary-dark);
    letter-spacing: 1px; line-height: 1.1;
}
.logo-slogan {
    font-size: 11px; color: var(--gray-dark); letter-spacing: 0.5px;
    font-weight: 400; line-height: 1;
}

.nav-menu { display: flex; gap: 32px; align-items: center; }
.nav-menu a {
    font-size: 14.5px; color: var(--text-light); font-weight: 500;
    transition: color 0.3s; position: relative;
}
.nav-menu a:hover { color: var(--primary); }
.nav-menu a::after {
    content: ''; position: absolute; bottom: -6px; left: 0;
    width: 0; height: 2px; background: linear-gradient(90deg, var(--primary), var(--cyan));
    border-radius: 2px; transition: width 0.35s ease;
}
.nav-menu a:hover::after { width: 100%; }
.nav-menu a.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff !important;
    padding: 8px 22px; border-radius: 8px;
    box-shadow: 0 4px 14px rgba(26,95,180,0.28);
    transition: var(--transition);
}
.nav-menu a.active:hover { box-shadow: 0 6px 24px rgba(26,95,180,0.42); transform: translateY(-1px); }
.nav-menu a.active::after { display: none; }

.nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff !important;
    padding: 8px 22px; border-radius: 8px; transition: var(--transition);
    box-shadow: 0 4px 14px rgba(26,95,180,0.28);
}
.nav-cta:hover { box-shadow: 0 6px 24px rgba(26,95,180,0.42); transform: translateY(-1px); }
.nav-cta::after { display: none; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span { width: 24px; height: 2.5px; background: var(--primary); border-radius: 3px; transition: 0.3s; }

/* ===== Hero ===== */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
    background: linear-gradient(135deg, #082448 0%, #0d3a6e 35%, #1a5fb4 75%, #2d7fd6 100%);
}
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="1920" height="1080" viewBox="0 0 1920 1080"%3E%3Cdefs%3E%3CradialGradient id="a" cx="50%25" cy="45%25" r="60%25"%3E%3Cstop offset="0%25" stop-color="%234a8fd4" stop-opacity="0.25"/%3E%3Cstop offset="100%25" stop-color="%231a5fb4" stop-opacity="0"/%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width="1920" height="1080" fill="url(%23a)"/%3E%3Ccircle cx="960" cy="540" r="480" fill="none" stroke="white" stroke-opacity="0.04" stroke-width="1.5"/%3E%3Ccircle cx="960" cy="540" r="360" fill="none" stroke="white" stroke-opacity="0.04" stroke-width="1.5"/%3E%3Ccircle cx="960" cy="540" r="240" fill="none" stroke="white" stroke-opacity="0.04" stroke-width="1.5"/%3E%3Ccircle cx="960" cy="540" r="120" fill="none" stroke="white" stroke-opacity="0.04" stroke-width="1.5"/%3E%3C/svg%3E') center/cover no-repeat;
}
.hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 80% 20%, rgba(90,200,250,0.08), transparent 50%),
                radial-gradient(ellipse at 20% 80%, rgba(26,95,180,0.06), transparent 50%);
}
.hero-content { position: relative; z-index: 2; text-align: center; color: white; padding: 0 24px; max-width: 920px; margin: 0 auto; }
/* 入场动画 */
@keyframes heroFadeUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}
.hero-subtitle {
    animation: heroFadeUp 0.8s ease-out 0.2s both;
}
.hero-desc {
    animation: heroFadeUp 0.8s ease-out 0.6s both;
}
.hero-subtitle { font-size: 52px; margin-bottom: 18px; opacity: 1; font-weight: 800; letter-spacing: 2px; color: #fff; text-shadow: 0 2px 20px rgba(0,0,0,0.15); line-height: 1.25; white-space: nowrap; }
.hero-desc { font-size: 16px; margin-bottom: 36px; opacity: 0.82; line-height: 1.9; }
.hero-buttons { display: flex; gap: 18px; justify-content: center; margin-bottom: 52px; }
.hero-buttons .btn { animation: heroFadeUp 0.8s ease-out both; }
.hero-buttons .btn-primary { animation-delay: 0.8s; }
.hero-buttons .btn-outline { animation-delay: 1.0s; }

.btn { padding: 14px 38px; border-radius: 10px; font-size: 15px; font-weight: 600; transition: var(--transition); cursor: pointer; border: none; display: inline-block; letter-spacing: 0.3px; }
.btn-primary { background: var(--accent); color: white; box-shadow: 0 6px 24px rgba(255,107,53,0.35); }
.btn-primary:hover { background: #e55a2b; transform: translateY(-3px); box-shadow: 0 12px 32px rgba(255,107,53,0.48); }
.btn-outline { background: transparent; color: white; border: 2px solid rgba(255,255,255,0.4); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: white; transform: translateY(-3px); }

.hero-stats {
    display: flex; gap: 60px; justify-content: center; flex-wrap: wrap;
    padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.12);
}
.stat-item { text-align: center; }
.stat-num { display: block; font-size: 40px; font-weight: 800; color: var(--cyan); }
.stat-num span { font-size: 18px; font-weight: 400; color: rgba(255,255,255,0.8); }
.stat-label { font-size: 14px; opacity: 0.7; margin-top: 4px; }

/* ===== Hero 区数据亮点带 ===== */
.hero-stats-band {
    position: relative; z-index: 3;
    margin-top: 40px;
    background: linear-gradient(135deg, rgba(8,36,72,0.82) 0%, rgba(13,58,110,0.82) 50%, rgba(26,95,180,0.82) 100%);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(90,200,250,0.12);
    border-radius: var(--radius-xl); padding: 36px 32px;
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.28);
}
.hero-stats-band::before {
    content: ''; position: absolute; top: 0; left: 10%; right: 10%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(90,200,250,0.4), transparent);
}
.hero-stats-band .stat-item { text-align: center; position: relative; }
.hero-stats-band .stat-item:not(:last-child)::after {
    content: ''; position: absolute; right: -12px; top: 20%; bottom: 20%; width: 1px;
    background: rgba(255,255,255,0.08);
}
.hero-stats-band .stat-num { display: block; font-size: 42px; font-weight: 800; color: var(--cyan); line-height: 1.1; }
.hero-stats-band .stat-num span { font-size: 18px; color: var(--cyan); font-weight: 600; }
.hero-stats-band .stat-label { color: rgba(255,255,255,0.65); font-size: 13px; letter-spacing: 0.5px; margin-top: 6px; display: block; }

/* ===== 通用 Section ===== */
.section { padding: 80px 0; }
.section-gray { background: linear-gradient(180deg, var(--gray) 0%, var(--gray-light) 100%); }
.section-dark { background: linear-gradient(160deg, #0a1628 0%, #0f2748 50%, #0d3a6e 100%); color: white; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-title { font-size: 34px; font-weight: 800; color: var(--dark); margin-bottom: 10px; letter-spacing: 0.3px; }
.section-title-light { color: white; }
.section-subtitle { font-size: 16px; color: var(--gray-dark); font-weight: 400; }
.section-subtitle-light { color: rgba(255,255,255,0.65); }
.section-header::after {
    content: ''; display: block; width: 48px; height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    border-radius: 3px; margin: 16px auto 0;
}

/* ===== 关于区域 ===== */
.about-content {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 32px;
    align-items: stretch;
}
.about-text {
    display: flex; flex-direction: column;
}
.about-text p { margin-bottom: 14px; font-size: 14.5px; line-height: 1.95; color: var(--text-light); }
.about-text p strong { color: var(--primary-dark); }

/* 右列容器 */
.about-right {
    display: flex; flex-direction: column;
    justify-content: space-between;
    gap: 20px;
}
.about-right .about-section-title { margin-top: 0; }

/* 关于区子标题 */
.about-section-title {
    font-size: 16px; font-weight: 800; color: var(--primary-dark);
    margin: 24px 0 12px; padding-left: 14px; position: relative;
    letter-spacing: 0.3px;
}
.about-section-title::before {
    content: ''; position: absolute; left: 0; top: 3px;
    width: 4px; height: 18px; border-radius: 2px;
    background: linear-gradient(180deg, var(--primary), var(--cyan));
}
.about-text .about-section-title:first-child,
.about-right .about-section-title:first-child { margin-top: 0; }

/* 发展历程时间线 */
.about-timeline {
    margin: 12px 0 0; position: relative; padding-left: 26px;
    flex: 1; display: flex; flex-direction: column;
    justify-content: space-between;
}
.about-timeline::before {
    content: ''; position: absolute; left: 7px; top: 8px; bottom: 8px;
    width: 2px; background: linear-gradient(180deg, var(--primary), var(--cyan));
    border-radius: 2px; opacity: 0.5;
}
.about-timeline-item {
    position: relative; font-size: 14px; line-height: 1.85; color: var(--text-light);
    padding: 6px 0;
}
.about-timeline-item::before {
    content: ''; position: absolute; left: -22px; top: 12px;
    width: 12px; height: 12px; border-radius: 50%;
    background: #fff; border: 2px solid var(--primary);
    box-shadow: 0 0 0 3px rgba(26,95,180,0.1);
    transition: var(--transition);
}
.about-timeline-item:hover::before {
    background: var(--primary); border-color: var(--cyan);
    box-shadow: 0 0 0 5px rgba(90,200,250,0.18);
}
.about-timeline-year {
    display: inline-block; font-weight: 800; color: var(--primary-dark); margin-right: 8px;
    font-size: 15px; font-variant-numeric: tabular-nums; vertical-align: baseline;
}
.about-timeline-item:hover .about-timeline-year { color: var(--primary); }

/* 大项目背书网格 */
.about-endorsements {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
    margin: 12px 0 0;
}
.endorsement-card {
    background: linear-gradient(135deg, rgba(26,95,180,0.05), rgba(90,200,250,0.05));
    border: 1px solid rgba(26,95,180,0.12);
    border-radius: 10px; padding: 14px 16px;
    transition: var(--transition); position: relative; overflow: hidden;
}
.endorsement-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 3px; height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--cyan));
    transform: scaleY(0); transform-origin: top; transition: transform 0.4s ease;
}
.endorsement-card:hover {
    transform: translateY(-3px); border-color: rgba(90,200,250,0.3);
    box-shadow: 0 8px 24px rgba(13,58,110,0.08);
    background: linear-gradient(135deg, rgba(26,95,180,0.07), rgba(90,200,250,0.07));
}
.endorsement-card:hover::before { transform: scaleY(1); }
.endorsement-card .endorsement-tag {
    display: inline-block; font-size: 11px; font-weight: 700;
    color: var(--primary); background: rgba(26,95,180,0.08);
    padding: 2px 8px; border-radius: 4px; margin-bottom: 5px;
    letter-spacing: 0.3px;
}
.endorsement-card p {
    font-size: 12.5px; line-height: 1.7; color: var(--text-light); margin: 0;
}
.endorsement-card p strong { color: var(--primary-dark); }

/* 业务线清单 */
.biz-list { margin: 8px 0 20px; }
.biz-list li {
    font-size: 14.5px; line-height: 1.8; color: #555;
    padding: 10px 0 10px 24px; position: relative;
    border-bottom: 1px solid var(--gray-mid);
}
.biz-list li:last-child { border-bottom: none; }
.biz-list li::before {
    content: ''; position: absolute; left: 0; top: 18px;
    width: 8px; height: 8px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--cyan));
    box-shadow: 0 0 8px rgba(90,200,250,0.4);
}
.biz-list li strong { color: var(--primary-dark); }

/* ===== 核心关键词面板 ===== */
.keyword-panel {
    background: linear-gradient(160deg, #0a1628 0%, #0f2748 50%, #0d3a6e 100%);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 16px 50px rgba(13,58,110,0.22);
}
.keyword-panel::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--primary-light) 50%, transparent);
}
.keyword-panel::after {
    content: ''; position: absolute; right: -80px; bottom: -80px;
    width: 220px; height: 220px; border-radius: 50%;
    background: radial-gradient(circle, rgba(90,200,250,0.14), transparent 65%);
    pointer-events: none;
}
.keyword-panel-title {
    grid-column: 1 / -1;
    font-size: 15px; font-weight: 700; color: var(--cyan);
    margin-bottom: 4px; letter-spacing: 0.5px;
    display: flex; align-items: center; gap: 8px;
}
.keyword-panel-title::before {
    content: ''; width: 4px; height: 16px; border-radius: 2px;
    background: var(--cyan);
}
.keyword-card {
    position: relative; z-index: 1;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(74,143,212,0.22);
    border-radius: 10px;
    padding: 18px 16px;
    transition: var(--transition);
}
.keyword-card:hover {
    transform: translateY(-3px);
    border-color: rgba(90,200,250,0.55);
    background: rgba(90,200,250,0.08);
    box-shadow: 0 8px 24px rgba(90,200,250,0.18);
}
.keyword-card h4 {
    font-size: 14.5px; font-weight: 700; color: var(--cyan);
    margin-bottom: 6px; letter-spacing: 0.3px;
}
.keyword-card p {
    font-size: 12.5px; line-height: 1.65;
    color: rgba(255,255,255,0.68);
}

/* ===== 服务卡片网格 ===== */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card {
    background: #fff; padding: 0 0 28px; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm); transition: var(--transition);
    border: 1px solid var(--gray-mid); position: relative; overflow: hidden;
    display: flex; flex-direction: column;
}
.service-thumb {
    width: 100%; aspect-ratio: 10 / 3; overflow: hidden;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    position: relative; background: var(--gray-light);
}
.service-thumb::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.15) 100%);
    pointer-events: none; opacity: 0; transition: opacity 0.4s ease;
}
.service-card:hover .service-thumb::after { opacity: 1; }
.service-thumb img {
    width: 100%; height: 100%; object-fit: cover; display: block;
    transition: transform 0.5s ease;
}
.service-card:hover .service-thumb img { transform: scale(1.05); }
.service-card .service-icon {
    margin: -26px 0 0 28px; position: relative; z-index: 2;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
/* 无图卡片（about页产品线详解）：图标不被裁切，顶部留出空间 */
.service-card:not(:has(.service-thumb)) {
    padding-top: 28px;
}
.service-card:not(:has(.service-thumb)) .service-icon {
    margin-top: 0;
}
.service-card h3, .service-card p, .service-card .service-link, .service-card ul {
    padding-left: 28px; padding-right: 28px;
}
.service-card h3 { margin-top: 16px; }
.service-card p { margin-bottom: 16px; }
.service-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    transform: scaleX(0); transform-origin: left; transition: transform 0.4s ease;
    z-index: 3;
}
.service-card::after {
    content: ''; position: absolute; bottom: 0; right: 0;
    width: 120px; height: 120px; border-radius: 50%;
    background: radial-gradient(circle, rgba(90,200,250,0.06), transparent 70%);
    pointer-events: none; transition: var(--transition);
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover::after { width: 180px; height: 180px; background: radial-gradient(circle, rgba(90,200,250,0.1), transparent 70%); }
.service-icon {
    font-size: 32px; margin-bottom: 0;
    display: inline-flex; align-items: center; justify-content: center;
    width: 56px; height: 56px; border-radius: 14px;
    background: #fff;
    transition: var(--transition);
}
.service-card:hover .service-icon { transform: scale(1.08) rotate(-4deg); }
.service-card h3 { font-size: 19px; font-weight: 700; color: var(--dark); margin-bottom: 10px; letter-spacing: 0.2px; }
.service-card p { font-size: 14px; color: var(--gray-dark); margin-bottom: 16px; line-height: 1.8; flex: 1; }
.service-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 14px; font-weight: 600; color: var(--primary);
    transition: var(--transition); align-self: flex-start;
}
.service-link:hover { color: var(--cyan); gap: 10px; }
.service-card ul { list-style: none; margin: 0 0 18px; }
.service-card ul li {
    font-size: 14px; color: #555; padding: 5px 0 5px 26px;
    position: relative; line-height: 1.6;
}
.service-card ul li::before {
    content: '✓'; position: absolute; left: 0; top: 6px;
    width: 18px; height: 18px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--cyan));
    color: #fff; font-size: 11px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    line-height: 1;
}

/* 每个卡片图标不同渐变色 */
.service-card:nth-child(1) .service-icon { background: linear-gradient(135deg, rgba(26,95,180,0.12), rgba(90,200,250,0.12)); }
.service-card:nth-child(2) .service-icon { background: linear-gradient(135deg, rgba(220,53,69,0.1), rgba(255,193,7,0.1)); }
.service-card:nth-child(3) .service-icon { background: linear-gradient(135deg, rgba(111,66,193,0.1), rgba(0,201,167,0.1)); }
.service-card:nth-child(4) .service-icon { background: linear-gradient(135deg, rgba(0,176,80,0.1), rgba(90,200,250,0.1)); }
.service-card:nth-child(5) .service-icon { background: linear-gradient(135deg, rgba(255,152,0,0.1), rgba(26,95,180,0.1)); }
.service-card:nth-child(6) .service-icon { background: linear-gradient(135deg, rgba(40,53,63,0.08), rgba(90,200,250,0.12)); }
.service-card:nth-child(7) .service-icon { background: linear-gradient(135deg, rgba(255,107,107,0.1), rgba(255,193,7,0.1)); }
.service-card:nth-child(8) .service-icon { background: linear-gradient(135deg, rgba(0,201,167,0.1), rgba(90,200,250,0.12)); }

/* ===== 案例区 ===== */
.cases-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }

.case-filter {
    display: flex; flex-wrap: wrap; gap: 10px;
    justify-content: center; margin-bottom: 48px;
}
.case-filter-btn {
    padding: 10px 22px; border-radius: 24px; cursor: pointer;
    font-size: 14px; font-weight: 600; font-family: inherit;
    color: var(--primary-dark); background: #fff;
    border: 1px solid var(--gray-mid);
    transition: var(--transition);
}
.case-filter-btn:hover {
    border-color: var(--primary); color: var(--primary);
    transform: translateY(-2px);
}
.case-filter-btn.active {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff; border-color: transparent;
    box-shadow: 0 6px 20px rgba(26,95,180,0.3);
}

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
    position: relative; background: #fff; padding: 28px 24px 26px;
    border-radius: var(--radius); box-shadow: var(--shadow-sm);
    transition: var(--transition); overflow: hidden;
    border: 1px solid var(--gray-mid); border-top: 3px solid transparent;
}
.case-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    transform: scaleX(0); transform-origin: left; transition: transform 0.4s ease;
}
.case-card:hover::before { transform: scaleX(1); }
.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}
.case-card.is-hidden { display: none; }
.case-tag {
    display: inline-block; font-size: 12px; font-weight: 600;
    padding: 5px 14px; border-radius: 6px; margin-bottom: 14px;
    color: var(--primary); background: rgba(26,95,180,0.07);
    border: 1px solid rgba(26,95,180,0.12);
}
.case-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 10px; line-height: 1.45; }
.case-card p { font-size: 13.5px; color: var(--gray-dark); line-height: 1.75; }

/* ===== 优势区 ===== */
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.advantage-item {
    text-align: center; padding: 36px 22px 32px;
    background: #fff; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs); transition: var(--transition);
    border: 1px solid var(--gray-mid); position: relative; overflow: hidden;
}
.advantage-item::before {
    content: ''; position: absolute; top: 0; left: 50%; width: 0; height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    transform: translateX(-50%); transition: width 0.4s ease;
}
.advantage-item:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.advantage-item:hover::before { width: 60%; }
.adv-icon {
    font-size: 36px; margin-bottom: 16px;
    display: inline-flex; align-items: center; justify-content: center;
    width: 64px; height: 64px; border-radius: 50%;
    background: linear-gradient(135deg, rgba(26,95,180,0.08), rgba(90,200,250,0.1));
    transition: var(--transition);
}
.advantage-item:hover .adv-icon { transform: scale(1.08); box-shadow: 0 0 24px rgba(90,200,250,0.2); }
.advantage-item h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.advantage-item p { font-size: 14px; color: var(--gray-dark); line-height: 1.8; }

/* ===== 联系页 ===== */
.contact-content { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-item { display: flex; align-items: center; gap: 18px; }
.contact-icon {
    font-size: 24px; width: 52px; height: 52px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(90,200,250,0.1); border: 1px solid rgba(90,200,250,0.2);
    border-radius: 14px; flex-shrink: 0;
}
.contact-item h4 { font-size: 14px; color: rgba(255,255,255,0.55); margin-bottom: 4px; }
.contact-item p { font-size: 16px; color: white; }
.contact-cta { text-align: center; }
.contact-cta h3 { font-size: 26px; margin-bottom: 18px; }
.contact-cta p { font-size: 15px; color: rgba(255,255,255,0.7); margin-bottom: 24px; line-height: 1.8; }
.contact-tags {
    display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
    position: relative;
}
.contact-tags.paused a {
    animation-play-state: paused !important;
}
.contact-tags a {
    display: inline-block; padding: 9px 18px; border-radius: 24px;
    font-size: 13px; font-weight: 600;
    color: rgba(255,255,255,0.85);
    background: rgba(90,200,250,0.08);
    border: 1px solid rgba(90,200,250,0.25);
    transition: color 0.3s, background 0.3s, border-color 0.3s, box-shadow 0.3s;
    will-change: transform;
}
.contact-tags a:hover {
    color: #fff; background: rgba(90,200,250,0.2);
    border-color: rgba(90,200,250,0.6);
    box-shadow: 0 8px 24px rgba(90,200,250,0.35);
    z-index: 10;
}

/* 圆周轨道运动 */
@keyframes orbit1 {
    from { transform: rotate(0deg) translateX(20px) rotate(0deg); }
    to   { transform: rotate(360deg) translateX(20px) rotate(-360deg); }
}
@keyframes orbit2 {
    from { transform: rotate(0deg) translateX(28px) rotate(0deg); }
    to   { transform: rotate(360deg) translateX(28px) rotate(-360deg); }
}
@keyframes orbit3 {
    from { transform: rotate(120deg) translateX(24px) rotate(-120deg); }
    to   { transform: rotate(480deg) translateX(24px) rotate(-480deg); }
}
@keyframes orbit4 {
    from { transform: rotate(240deg) translateX(32px) rotate(-240deg); }
    to   { transform: rotate(600deg) translateX(32px) rotate(-600deg); }
}
@keyframes orbit5 {
    from { transform: rotate(60deg) translateX(22px) rotate(-60deg); }
    to   { transform: rotate(420deg) translateX(22px) rotate(-420deg); }
}
@keyframes orbit6 {
    from { transform: rotate(180deg) translateX(30px) rotate(-180deg); }
    to   { transform: rotate(540deg) translateX(30px) rotate(-540deg); }
}
@keyframes orbit7 {
    from { transform: rotate(300deg) translateX(26px) rotate(-300deg); }
    to   { transform: rotate(660deg) translateX(26px) rotate(-660deg); }
}
@keyframes orbit8 {
    from { transform: rotate(90deg) translateX(34px) rotate(-90deg); }
    to   { transform: rotate(450deg) translateX(34px) rotate(-450deg); }
}
@keyframes orbit9 {
    from { transform: rotate(210deg) translateX(18px) rotate(-210deg); }
    to   { transform: rotate(570deg) translateX(18px) rotate(-570deg); }
}
@keyframes orbit10 {
    from { transform: rotate(330deg) translateX(36px) rotate(-330deg); }
    to   { transform: rotate(690deg) translateX(36px) rotate(-690deg); }
}
@keyframes orbit11 {
    from { transform: rotate(45deg) translateX(24px) rotate(-45deg); }
    to   { transform: rotate(405deg) translateX(24px) rotate(-405deg); }
}
@keyframes orbit12 {
    from { transform: rotate(150deg) translateX(30px) rotate(-150deg); }
    to   { transform: rotate(510deg) translateX(30px) rotate(-510deg); }
}
@keyframes orbit13 {
    from { transform: rotate(270deg) translateX(22px) rotate(-270deg); }
    to   { transform: rotate(630deg) translateX(22px) rotate(-630deg); }
}

@keyframes tagGlow {
    0%, 100% { box-shadow: 0 0 0 rgba(90,200,250,0); }
    50% { box-shadow: 0 0 12px rgba(90,200,250,0.3); }
}

.contact-tags a:nth-child(1)  { animation: orbit1 8s linear infinite, tagGlow 4s ease-in-out infinite; }
.contact-tags a:nth-child(2)  { animation: orbit2 10s linear infinite, tagGlow 3.5s ease-in-out infinite; }
.contact-tags a:nth-child(3)  { animation: orbit3 9s linear infinite, tagGlow 4.5s ease-in-out infinite; }
.contact-tags a:nth-child(4)  { animation: orbit4 12s linear infinite, tagGlow 3s ease-in-out infinite; }
.contact-tags a:nth-child(5)  { animation: orbit5 7.5s linear infinite, tagGlow 5s ease-in-out infinite; }
.contact-tags a:nth-child(6)  { animation: orbit6 11s linear infinite, tagGlow 3.5s ease-in-out infinite; }
.contact-tags a:nth-child(7)  { animation: orbit7 8.5s linear infinite, tagGlow 4s ease-in-out infinite; }
.contact-tags a:nth-child(8)  { animation: orbit8 13s linear infinite, tagGlow 5.5s ease-in-out infinite; }
.contact-tags a:nth-child(9)  { animation: orbit9 6.5s linear infinite, tagGlow 3s ease-in-out infinite; }
.contact-tags a:nth-child(10) { animation: orbit10 14s linear infinite, tagGlow 4.5s ease-in-out infinite; }
.contact-tags a:nth-child(11) { animation: orbit11 9.5s linear infinite, tagGlow 3.5s ease-in-out infinite; }
.contact-tags a:nth-child(12) { animation: orbit12 10.5s linear infinite, tagGlow 5s ease-in-out infinite; }
.contact-tags a:nth-child(13) { animation: orbit13 7s linear infinite, tagGlow 4s ease-in-out infinite; }

/* ===== 页面 Banner ===== */
.page-banner {
    background: linear-gradient(135deg, #082448 0%, #0d3a6e 50%, #1a5fb4 100%);
    color: white; padding: 150px 0 70px; text-align: center;
    position: relative; overflow: hidden;
}
.page-banner::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(90,200,250,0.4), transparent);
}
.page-banner h1 { font-size: 40px; margin-bottom: 12px; font-weight: 800; animation: heroFadeUp 0.7s ease-out 0.3s both; }
.page-banner p { font-size: 17px; opacity: 0.8; animation: heroFadeUp 0.7s ease-out 0.5s both; }
.page-banner .breadcrumb { animation: heroFadeUp 0.7s ease-out 0.1s both; }
.page-banner-phones { animation: heroFadeUp 0.7s ease-out 0.7s both; }
.page-banner-anim-1 { animation: heroFadeUp 0.7s ease-out 0.1s both; }
.page-banner-anim-2 { animation: heroFadeUp 0.7s ease-out 0.3s both; }
.page-banner-anim-3 { animation: heroFadeUp 0.7s ease-out 0.5s both; }
/* section-header 入场动画（滚动触发） */
.section-title { transition: opacity 0.7s ease, transform 0.7s ease; }
.section-subtitle { transition: opacity 0.7s ease, transform 0.7s ease; }
.section-header::after { transition: opacity 0.7s ease 0.2s, transform 0.7s ease 0.2s; }
.section-header.reveal .section-title { opacity: 1; transform: translateY(0); }
.section-header.reveal .section-subtitle { opacity: 1; transform: translateY(0); }
.section-header.reveal::after { opacity: 1; transform: translateY(0); }
.section-header:not(.reveal) .section-title { opacity: 0; transform: translateY(40px); }
.section-header:not(.reveal) .section-subtitle { opacity: 0; transform: translateY(40px); }
.section-header:not(.reveal)::after { opacity: 0; transform: translateY(40px); }
.page-banner .breadcrumb a { color: rgba(255,255,255,0.6); }
.page-banner .breadcrumb a:hover { color: #fff; }

/* Banner 内 400 电话卡 */
.page-banner-phones {
    display: flex; justify-content: center; gap: 24px;
    margin-top: 32px; flex-wrap: wrap;
}
.page-banner-phones a {
    display: flex; flex-direction: column; align-items: center;
    padding: 18px 36px; min-width: 200px;
    background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
    border-radius: 14px; backdrop-filter: blur(8px);
    transition: var(--transition);
}
.page-banner-phones a:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(90,200,250,0.5);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(90,200,250,0.15);
}
.page-banner-phones .phone-label {
    font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 6px;
}
.page-banner-phones .phone-num {
    font-size: 28px; font-weight: 800; letter-spacing: 1px; color: #fff;
}

/* ===== Footer ===== */
.footer { background: #0a0a1a; color: #8899aa; padding: 48px 0 24px; }
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 36px; margin-bottom: 28px; }
.footer-col h4 { color: white; font-size: 15px; margin-bottom: 16px; font-weight: 700; letter-spacing: 0.3px; }
.footer-col p { font-size: 13.5px; margin-bottom: 7px; line-height: 1.7; }
.footer-col ul li { margin-bottom: 9px; }
.footer-col ul li a { font-size: 13.5px; color: #8899aa; transition: color 0.3s; }
.footer-col ul li a:hover { color: white; }
.footer-keywords { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-keywords a { font-size: 12px; background: rgba(255,255,255,0.06); padding: 5px 12px; border-radius: 6px; color: #99aabb; transition: var(--transition-fast); }
.footer-keywords a:hover { background: rgba(90,200,250,0.12); color: var(--cyan); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; text-align: center; }
.footer-bottom p { font-size: 12.5px; color: #667788; margin-bottom: 5px; }

/* ===== 数据亮点：深色科技数据带 ===== */
.stats-band {
    position: relative; overflow: hidden;
    background: linear-gradient(135deg, #082448 0%, #0d3a6e 50%, #1a5fb4 100%);
    border-radius: var(--radius-xl); padding: 54px 36px;
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
    box-shadow: 0 16px 50px rgba(13,58,110,0.22);
}
.stats-band::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 15% 0%, rgba(90,200,250,0.16), transparent 50%);
    pointer-events: none;
}
.stats-band::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}
.stats-band .stat-item { position: relative; z-index: 1; text-align: center; }
.stats-band .stat-num {
    color: #fff; font-size: 48px; font-weight: 800; line-height: 1.15;
    font-variant-numeric: tabular-nums; letter-spacing: 0.5px;
}
.stats-band .stat-num span { font-size: 22px; color: var(--cyan); font-weight: 600; }
.stats-band .stat-label { color: rgba(255,255,255,0.7); font-size: 15px; letter-spacing: 0.5px; margin-top: 4px; display: block; }

/* ===== 联系页：快捷拨号卡 ===== */
.quick-call { padding: 56px 0 0; }
.quick-call-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
    max-width: 900px; margin: 0 auto;
}
.call-card {
    display: flex; align-items: center; gap: 20px;
    padding: 28px 32px; border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #082448 0%, #0d3a6e 60%, #1a5fb4 100%);
    border: 1px solid rgba(74,143,212,0.22);
    box-shadow: 0 12px 36px rgba(13,58,110,0.18);
    transition: var(--transition); position: relative; overflow: hidden;
}
.call-card::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--cyan) 60%, transparent);
}
.call-card:hover {
    transform: translateY(-4px);
    border-color: rgba(90,200,250,0.55);
    box-shadow: 0 18px 48px rgba(13,58,110,0.26);
}
.call-icon {
    flex: 0 0 56px; width: 56px; height: 56px; border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 26px; background: rgba(90,200,250,0.1);
    border: 1px solid rgba(90,200,250,0.25);
}
.call-body { display: flex; flex-direction: column; }
.call-label { font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 2px; }
.call-num {
    font-size: 28px; font-weight: 800; color: #fff;
    letter-spacing: 0.8px; font-variant-numeric: tabular-nums; line-height: 1.3;
}
.call-hint { font-size: 13px; color: var(--cyan); margin-top: 4px; }

/* ===== FAQ ===== */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item {
    background: #fff; border-radius: var(--radius);
    box-shadow: var(--shadow-xs); margin-bottom: 14px;
    border: 1px solid var(--gray-mid); overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-sm); border-color: var(--cyan); }
.faq-item[open] { box-shadow: var(--shadow); border-color: var(--primary); }
.faq-item summary {
    cursor: pointer; list-style: none;
    padding: 24px 64px 24px 64px; position: relative;
    font-size: 16.5px; font-weight: 700; color: var(--dark);
    counter-increment: faq-counter;
}
.faq-item summary::before {
    content: counter(faq-counter, decimal-leading-zero);
    position: absolute; left: 24px; top: 50%;
    transform: translateY(-50%);
    font-size: 15px; font-weight: 800;
    color: var(--primary); background: rgba(26,95,180,0.08);
    width: 32px; height: 32px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; transition: var(--transition);
}
.faq-item[open] summary::before { background: var(--primary); color: #fff; }
.faq-list { counter-reset: faq-counter; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+'; position: absolute; right: 26px; top: 50%;
    transform: translateY(-50%); font-size: 26px; font-weight: 300;
    color: var(--primary); transition: transform 0.3s ease;
    width: 28px; height: 28px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: rgba(26,95,180,0.08);
}
.faq-item[open] summary::after { content: '−'; background: var(--primary); color: #fff; transform: translateY(-50%) rotate(0deg); }
.faq-answer { padding: 0 26px 26px 64px; }
.faq-answer p { font-size: 15px; color: var(--gray-dark); line-height: 1.95; }
.faq-answer p strong { color: var(--primary-dark); font-weight: 700; }

/* ===== 服务流程时间线 ===== */
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.process-card {
    background: #fff; border-radius: var(--radius-lg); padding: 32px 24px;
    box-shadow: var(--shadow-xs); border: 1px solid var(--gray-mid);
    transition: var(--transition); position: relative;
}
.process-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.process-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.process-card p { font-size: 14px; color: var(--gray-dark); line-height: 1.75; }

/* ===== 资源能力面板 ===== */
.resource-panel {
    background: #fff; border-radius: var(--radius-lg);
    padding: 40px; box-shadow: var(--shadow); border: 1px solid var(--gray-mid);
}
.resource-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.resource-item {
    display: flex; gap: 14px; padding: 18px 16px;
    border-radius: 10px; background: var(--gray-light);
    border: 1px solid var(--gray-mid);
    transition: var(--transition);
}
.resource-item:hover {
    background: #fff; border-color: var(--primary-light);
    box-shadow: 0 4px 14px rgba(26,95,180,0.1); transform: translateY(-2px);
}
.resource-icon {
    flex: 0 0 42px; width: 42px; height: 42px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; background: linear-gradient(135deg, rgba(26,95,180,0.1), rgba(90,200,250,0.1));
}
.resource-icon.faq-q {
    font-size: 15px; font-weight: 800; border-radius: 50%;
    background: linear-gradient(135deg, #1a5fb4, #5AC8FA); color: #fff;
}
.resource-item h4 { font-size: 15px; font-weight: 700; color: var(--primary-dark); margin-bottom: 6px; }
.resource-item p { font-size: 13px; color: var(--gray-dark); line-height: 1.7; }
.resource-item p strong { color: var(--primary-dark); }

/* 锚点跳转时避免被固定导航栏遮挡 */
[id^="service-"] { scroll-margin-top: 100px; }

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

@media (max-width: 768px) {
    .nav-menu { display: none; position: fixed; top: 72px; left: 0; width: 100%; background: white; flex-direction: column; padding: 20px; gap: 15px; box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
    .nav-menu.active { display: flex; }
    .nav-toggle { display: flex; }
    .hero-subtitle { font-size: clamp(13px, 4.3vw, 20px); white-space: nowrap; letter-spacing: 0; }
    .hero-desc { font-size: 13px; }
    .hero-buttons { flex-direction: column; gap: 12px; }
    .hero-stats { gap: 30px; }
    .stat-num { font-size: 26px; }
    .about-content, .services-grid, .cases-grid, .advantages-grid, .contact-content, .case-grid, .process-grid { grid-template-columns: 1fr; }
    .about-endorsements { grid-template-columns: 1fr; }
    .about-right .about-section-title { margin-top: 24px; }
    .keyword-panel { grid-template-columns: 1fr; padding: 20px; }
    .resource-grid { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; gap: 24px; }
    .section-title { font-size: 24px; }
    .section { padding: 56px 0; }
    .page-banner { padding: 120px 0 50px; }
    .page-banner h1 { font-size: 28px; }
    .page-banner-phones { gap: 12px; }
    .page-banner-phones a { min-width: 160px; padding: 14px 20px; }
    .page-banner-phones .phone-num { font-size: 22px; }
    .quick-call-grid { grid-template-columns: 1fr; }
    .call-num { font-size: 24px; }
    .stats-band { grid-template-columns: repeat(2, 1fr); padding: 36px 20px; }
    .stats-band .stat-num { font-size: 36px; }
    .hero-stats-band { grid-template-columns: repeat(2, 1fr); padding: 28px 20px; }
    .hero-stats-band .stat-num { font-size: 34px; }
    .hero-stats-band .stat-item:not(:last-child)::after { display: none; }
    .case-filter-btn { padding: 8px 16px; font-size: 13px; }
}

/* ===== 导航下拉菜单 ===== */
.nav-dropdown { position: relative; }
.dropdown-menu {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 100%; left: 0;
    min-width: 220px; background: #fff; border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.12);
    border: 1px solid var(--gray-mid); padding: 8px 0; z-index: 100;
    opacity: 0; visibility: hidden; transform: translateY(-10px);
    transition: opacity 0.28s ease, transform 0.28s cubic-bezier(0.22,0.61,0.36,1), visibility 0.28s;
    pointer-events: none;
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
    opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto;
}
.dropdown-menu li { width: 100%; opacity: 0; transform: translateY(-6px); transition: opacity 0.24s ease, transform 0.24s ease; }
.nav-dropdown:hover .dropdown-menu li,
.nav-dropdown:focus-within .dropdown-menu li { opacity: 1; transform: none; }
.nav-dropdown:hover .dropdown-menu li:nth-child(1) { transition-delay: 0.05s; }
.nav-dropdown:hover .dropdown-menu li:nth-child(2) { transition-delay: 0.09s; }
.nav-dropdown:hover .dropdown-menu li:nth-child(3) { transition-delay: 0.13s; }
.nav-dropdown:hover .dropdown-menu li:nth-child(4) { transition-delay: 0.17s; }
.nav-dropdown:hover .dropdown-menu li:nth-child(5) { transition-delay: 0.21s; }
.nav-dropdown:hover .dropdown-menu li:nth-child(6) { transition-delay: 0.25s; }
.nav-dropdown:hover .dropdown-menu li:nth-child(7) { transition-delay: 0.29s; }
@media (prefers-reduced-motion: reduce) {
    .dropdown-menu { transition: none; transform: none; }
    .dropdown-menu li { transition: none; transform: none; opacity: 1; }
}
.dropdown-menu li a {
    display: block; padding: 10px 20px; font-size: 14px;
    color: var(--gray-dark); border-radius: 0;
}
.dropdown-menu li a:hover { background: var(--gray-light); color: var(--primary); }

/* ===== 服务落地页样式 ===== */
.service-visual {
    margin: 0 0 40px;
    width: 100vw; max-width: 100vw; margin-left: calc(50% - 50vw);
    overflow: hidden; position: relative;
    background: #071e3d;
    border-radius: 0;
}
.service-visual img {
    width: 100%; height: auto; aspect-ratio: 1200 / 144; object-fit: contain;
    object-position: center; display: block;
    background: #071e3d;
}
.service-visual figcaption {
    padding: 8px 24px; font-size: 12px; color: rgba(255,255,255,0.6); text-align: center;
}
/* 横幅文字覆盖层：与正文 container 内距 24px 对齐（即 h3 蓝竖线左缘），7 个服务页通用 */
.svc-media { position: relative; }
.svc-overlay {
    position: absolute; inset: 0; display: flex; align-items: center;
    pointer-events: none;
}
.svc-overlay-inner {
    width: 100%; max-width: 1200px; margin: 0 auto;
    padding: 0 24px 0 24px;
}
.svc-overlay-inner strong {
    display: block; font-size: 30px; font-weight: 700; color: #fff;
    letter-spacing: 2px; line-height: 1.3; margin-bottom: 6px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}
.svc-overlay-inner span {
    display: block; font-size: 14px; color: #5ac8fa; letter-spacing: 1px;
    line-height: 1.75; text-shadow: 0 1px 8px rgba(0,0,0,0.4);
}
.svc-overlay-inner span + span { font-size: 12px; opacity: 0.8; line-height: 1.7; }
@media (max-width: 768px) {
    .svc-overlay-inner strong { font-size: 17px; margin-bottom: 3px; letter-spacing: 1px; }
    .svc-overlay-inner span { font-size: 11px; line-height: 1.6; }
    .svc-overlay-inner span + span { font-size: 10px; line-height: 1.5; }
}
@media (max-width: 768px) {
    .service-visual img { aspect-ratio: 7 / 2; }
}
.service-body h3 {
    font-size: 20px; font-weight: 700; color: var(--primary-dark);
    margin: 32px 0 12px; padding-left: 16px; border-left: 4px solid var(--primary);
}
.service-body p { font-size: 15px; color: var(--gray-dark); line-height: 1.9; margin-bottom: 16px; }
.service-body .biz-list li { font-size: 15px; color: var(--gray-dark); line-height: 1.85; margin-bottom: 8px; }
.service-link {
    display: inline-flex; align-items: center; gap: 6px;
    margin: 0 24px 24px; font-size: 14px;
    font-weight: 600; color: var(--primary); transition: var(--transition);
}
.service-link:hover { color: var(--cyan); gap: 10px; }
.service-cta {
    margin-top: 40px; padding: 32px; text-align: center;
    background: linear-gradient(135deg, rgba(26,95,180,0.06), rgba(90,200,250,0.06));
    border-radius: var(--radius-lg); border: 1px solid var(--gray-mid);
}
.service-cta p { font-size: 16px; font-weight: 600; color: var(--dark); margin-bottom: 16px; }

@media (max-width: 768px) {
    .dropdown-menu {
        display: none; position: static; box-shadow: none; border: none; padding: 0 0 0 16px;
        opacity: 1; visibility: visible; transform: none; transition: none; pointer-events: auto;
    }
    .dropdown-menu li { opacity: 1; transform: none; transition: none; }
    .nav-dropdown:hover .dropdown-menu { display: none; }
    .nav-dropdown.expanded .dropdown-menu { display: flex; }
}

/* ===== 联系页在线表单 ===== */
.contact-form-section {
    display: flex; gap: 40px; margin-top: 48px; flex-wrap: wrap;
}
.contact-form-wrapper {
    flex: 1; min-width: 320px; max-width: 600px;
    background: #fff; border-radius: 16px; padding: 36px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}
.contact-form-title { font-size: 22px; font-weight: 800; color: var(--dark); margin-bottom: 8px; }
.contact-form-desc { font-size: 14px; color: var(--gray-dark); margin-bottom: 24px; }
.contact-form .form-row { display: flex; gap: 20px; margin-bottom: 20px; }
.contact-form .form-group { flex: 1; }
.contact-form .form-group:not(.form-row .form-group) { margin-bottom: 20px; }
.contact-form label { display: block; font-size: 14px; font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.contact-form .required { color: #e53e3e; }
.contact-form input, .contact-form select, .contact-form textarea {
    width: 100%; padding: 10px 14px; border: 1px solid #e2e8f0; border-radius: 8px;
    font-size: 14px; font-family: inherit; transition: border-color 0.2s;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
    outline: none; border-color: var(--cyan);
}
.contact-form textarea { resize: vertical; }
.form-submit-btn { width: 100%; padding: 14px; font-size: 16px; border-radius: 10px; margin-top: 8px; }

.contact-wechat { flex: 0 0 280px; }
.wechat-card {
    background: linear-gradient(135deg, #f0fdfa 0%, #e0f7fa 100%);
    border-radius: 16px; padding: 32px; text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.wechat-card h4 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 20px; }
.wechat-qr-placeholder { display: flex; flex-direction: column; align-items: center; }
.qr-code { width: 120px; height: 120px; margin-bottom: 16px; }
.wechat-qr-placeholder p { font-size: 13px; color: var(--gray-dark); line-height: 1.6; }

@media (max-width: 768px) {
    .contact-form-section { flex-direction: column; }
    .contact-form .form-row { flex-direction: column; gap: 0; }
}

/* ===== 移动端浮动CTA按钮 ===== */
.float-cta {
    position: fixed; right: 16px; bottom: 80px; z-index: 200;
    display: none; flex-direction: column; gap: 10px;
}
.float-cta-item {
    width: 52px; height: 52px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 24px; color: #fff; text-decoration: none;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    transition: transform 0.2s;
}
.float-cta-item:hover { transform: scale(1.1); }
.float-cta-phone { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.float-cta-wechat { background: linear-gradient(135deg, #22c55e, #16a34a); }
.float-cta-top { background: linear-gradient(135deg, #64748b, #475569); font-size: 20px; }
@media (max-width: 768px) {
    .float-cta { display: flex; }
}

/* ============ 服务卡：科技感 Hover 动效增强（扫光/辉光/标题下划线） ============ */
/* 图片斜向高光扫过 */
.service-thumb::before {
    content: ''; position: absolute; top: -50%; left: -70%;
    width: 50%; height: 200%; z-index: 1; pointer-events: none;
    background: linear-gradient(100deg, transparent 0%, rgba(255,255,255,0.28) 45%, rgba(90,200,250,0.35) 55%, transparent 100%);
    transform: skewX(-18deg);
    transition: left 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}
.service-card:hover .service-thumb::before { left: 140%; }
/* 图片增强缩放 + 提亮 */
.service-card:hover .service-thumb img {
    transform: scale(1.08);
    filter: brightness(1.12) saturate(1.15);
}
/* 卡片辉光边框 */
.service-card:hover {
    border-color: rgba(90, 200, 250, 0.55);
    box-shadow: 0 16px 40px rgba(26, 95, 180, 0.16), 0 0 0 1px rgba(90, 200, 250, 0.35), 0 0 24px rgba(90, 200, 250, 0.18);
}
/* 标题：青蓝渐变下划线生长 + 变色 */
.service-card h3 {
    background: linear-gradient(90deg, var(--primary), var(--cyan)) no-repeat left bottom;
    background-size: 0 2px;
    transition: color 0.3s ease, background-size 0.45s ease;
    padding-bottom: 2px;
}
.service-card:hover h3 { color: var(--primary); background-size: 42px 2px; }
/* 动效降级（无障碍/低性能设备） */
@media (prefers-reduced-motion: reduce) {
    .service-thumb::before { display: none; }
    .service-card, .service-card h3, .service-thumb img { transition: none !important; }
    .service-card:hover { transform: none; }
    .service-card:hover .service-thumb img { transform: none; filter: none; }
}

/* ============ 资源卡（核心资源与能力/FAQ）：科技感 Hover 动效 ============ */
.resource-item { position: relative; overflow: hidden; }
/* 左侧渐变光条：自上而下扫入 */
.resource-item::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
    background: linear-gradient(180deg, var(--primary), var(--cyan));
    transform: scaleY(0); transform-origin: top;
    transition: transform 0.4s ease; z-index: 1;
}
/* 右下角青色微光晕 */
.resource-item::after {
    content: ''; position: absolute; bottom: -30px; right: -30px;
    width: 90px; height: 90px; border-radius: 50%;
    background: radial-gradient(circle, rgba(90,200,250,0.16), transparent 70%);
    opacity: 0; transition: opacity 0.4s ease; pointer-events: none;
}
.resource-item:hover {
    background: #fff;
    border-color: rgba(90, 200, 250, 0.55);
    box-shadow: 0 10px 28px rgba(26, 95, 180, 0.14), 0 0 0 1px rgba(90, 200, 250, 0.3), 0 0 18px rgba(90, 200, 250, 0.15);
    transform: translateY(-4px);
}
.resource-item:hover::before { transform: scaleY(1); }
.resource-item:hover::after { opacity: 1; }
/* 图标：放大旋转 + 青色辉光 */
.resource-icon { transition: transform 0.35s ease, box-shadow 0.35s ease, background 0.35s ease; }
.resource-item:hover .resource-icon {
    transform: scale(1.12) rotate(-6deg);
    box-shadow: 0 0 16px rgba(90, 200, 250, 0.45);
    background: linear-gradient(135deg, rgba(26, 95, 180, 0.18), rgba(90, 200, 250, 0.28));
}
/* 标题：渐变下划线生长 */
.resource-item h4 {
    width: fit-content;
    background: linear-gradient(90deg, var(--primary), var(--cyan)) no-repeat left bottom;
    background-size: 0 2px;
    transition: background-size 0.45s ease;
    padding-bottom: 2px;
}
.resource-item:hover h4 { background-size: 32px 2px; }
/* 动效降级 */
@media (prefers-reduced-motion: reduce) {
    .resource-item::before, .resource-item::after { display: none; }
    .resource-item, .resource-icon, .resource-item h4 { transition: none !important; }
    .resource-item:hover { transform: none; }
    .resource-item:hover .resource-icon { transform: none; }
}

/* ===== 关于页：板块标题入场动效（左滑 + 渐变下划线展开） ===== */
.about-section-title, .keyword-panel-title { position: relative; }
.about-section-title::after, .keyword-panel-title::after {
    content: ''; position: absolute; left: 14px; bottom: -5px;
    width: 44px; height: 2px; border-radius: 1px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.6s ease 0.2s;
}
.keyword-panel-title::after { left: 12px; bottom: -3px; background: linear-gradient(90deg, var(--cyan), transparent); }
.about-section-title.title-in::after, .keyword-panel-title.title-in::after { transform: scaleX(1); }
@media (prefers-reduced-motion: reduce) {
    .about-section-title::after, .keyword-panel-title::after { transition: none; transform: scaleX(1); }
}

/* ===== 服务详情页：横幅入场 + 正文 h3 下划线展开 ===== */
.page-banner .container > h1 { animation: heroFadeUp 0.7s ease-out 0.1s both; }
.page-banner .container > p:not([class*="page-banner-anim"]) { animation: heroFadeUp 0.7s ease-out 0.3s both; }
.page-banner .container > .breadcrumb { animation: heroFadeUp 0.7s ease-out 0.5s both; }
.service-body h3 { position: relative; }
.service-body h3::after {
    content: ''; position: absolute; left: 16px; bottom: -6px;
    width: 44px; height: 2px; border-radius: 1px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.6s ease 0.2s;
}
.service-body h3.title-in::after { transform: scaleX(1); }
@media (prefers-reduced-motion: reduce) {
    .page-banner .container > h1,
    .page-banner .container > p:not([class*="page-banner-anim"]),
    .page-banner .container > .breadcrumb { animation: none; }
    .service-body h3::after { transition: none; transform: scaleX(1); }
}

/* ===== 横版图标题文字层：左滑偏移入场（仅 JS 标记 svc-anim-ready 后启用隐藏，无 JS 保持可见） ===== */
.service-visual.svc-anim-ready:not(.svc-in) .svc-overlay-inner strong,
.service-visual.svc-anim-ready:not(.svc-in) .svc-overlay-inner span { opacity: 0; transform: translateX(-56px); }
.service-visual.svc-in .svc-overlay-inner strong,
.service-visual.svc-in .svc-overlay-inner span {
    opacity: 1; transform: none;
    transition: opacity 0.65s ease, transform 0.65s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.service-visual.svc-in .svc-overlay-inner strong { transition-delay: 0.2s; }
.service-visual.svc-in .svc-overlay-inner span { transition-delay: 0.35s; }
.service-visual.svc-in .svc-overlay-inner span + span { opacity: 0.8; transition-delay: 0.5s; }
@media (prefers-reduced-motion: reduce) {
    .service-visual.svc-anim-ready:not(.svc-in) .svc-overlay-inner strong,
    .service-visual.svc-anim-ready:not(.svc-in) .svc-overlay-inner span { opacity: 1; transform: none; transition: none; }
    .service-visual.svc-anim-ready:not(.svc-in) .svc-overlay-inner span + span { opacity: 0.8; }
}

/* ===== 关于页「服务流程」卡内标题渐变下划线（与全站标题动效统一） ===== */
.process-card h3 { position: relative; }
.process-card h3::after {
    content: ''; position: absolute; left: 0; bottom: -4px;
    width: 36px; height: 2px; border-radius: 1px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.5s ease 0.1s;
}
.process-card h3.title-in::after { transform: scaleX(1); }
@media (prefers-reduced-motion: reduce) {
    .process-card h3::after { transition: none; transform: scaleX(1); }
}

/* ===== 服务流程卡缩略图（卡内小横幅，视觉重量对齐七大产品线卡） ===== */
.process-card { overflow: hidden; }
.process-media {
    position: relative; display: block; overflow: hidden;
    width: 70%; max-width: 216px;
    border-radius: 10px; margin-bottom: 18px;
    box-shadow: 0 4px 14px rgba(11,18,32,0.10);
    background: linear-gradient(135deg, #0a2647, #1a5fb4);
}
.process-thumb {
    display: block; width: 100%; height: auto;
    transition: transform 0.5s ease, filter 0.5s ease;
}
/* 悬停斜向扫光 */
.process-media::after {
    content: ''; position: absolute; top: -25%; left: 0;
    width: 42%; height: 150%;
    background: linear-gradient(100deg, transparent, rgba(255,255,255,0.55), transparent);
    transform: translateX(-170%) skewX(-18deg);
    opacity: 0; pointer-events: none;
}
.process-card:hover .process-media::after { animation: procSweep 0.9s ease-out; }
@keyframes procSweep {
    0%   { transform: translateX(-170%) skewX(-18deg); opacity: 0; }
    18%  { opacity: 1; }
    100% { transform: translateX(330%) skewX(-18deg); opacity: 0; }
}
.process-card:hover .process-thumb { transform: scale(1.06); filter: brightness(1.08) saturate(1.06); }
@media (prefers-reduced-motion: reduce) {
    .process-card:hover .process-media::after { animation: none; }
    .process-card:hover .process-thumb { transform: none; filter: none; }
    .process-thumb { transition: none; }
}