/* ==================== 全局样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1e5799;
    --primary-dark: #0c3b75;
    --primary-light: #2989d8;
    --accent: #2989d8;
    --text-dark: #1a1a2e;
    --text-gray: #555;
    --text-light: #888;
    --bg-light: #f7f9fc;
    --bg-white: #ffffff;
    --border: #e8ecf1;
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.06);
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(30,87,153,0.15);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-dark);
    background: var(--bg-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius);
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(30,87,153,0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30,87,153,0.45);
}

.btn-outline {
    background: transparent;
    border-color: rgba(255,255,255,0.6);
    color: #fff;
}
.btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: #fff;
}

.btn-block { width: 100%; justify-content: center; }

/* ==================== 区域标题 ==================== */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 34px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
    position: relative;
}

.section-subtitle {
    font-size: 14px;
    color: var(--primary);
    letter-spacing: 3px;
    font-weight: 500;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 2px;
    margin: 0 auto 20px;
}

.section-header .section-desc {
    color: var(--text-gray);
    font-size: 15px;
}

/* 左对齐标题 */
.section-title.left { text-align: left; }
.section-subtitle.left { text-align: left; }
.section-line.left { margin: 0 0 20px; }

/* ==================== 顶部导航 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 15px rgba(0,0,0,0.06);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    box-shadow: 0 4px 12px rgba(30,87,153,0.3);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-en {
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 1.5px;
}

.logo-cn {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
}

.nav {
    flex: 1;
    display: flex;
    justify-content: center;
    overflow: visible;
}

.nav-list {
    display: flex;
    gap: 2px;
    overflow: visible;
}

.nav-link {
    padding: 8px 10px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-gray);
    border-radius: 6px;
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-caret {
    font-size: 10px;
    margin-left: 3px;
    transition: transform 0.2s;
}

.nav-item-has-dropdown {
    position: relative;
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    min-width: 160px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
    padding: 8px 0;
    z-index: 1100;
    display: none;
    margin-top: 8px;
}

.nav-item-has-dropdown:hover .nav-dropdown,
.nav-item-has-dropdown.dropdown-open .nav-dropdown {
    display: block;
}

.nav-item-has-dropdown:hover .nav-caret {
    transform: rotate(180deg);
}

.nav-dropdown-link {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-gray);
    transition: all 0.2s;
    white-space: nowrap;
}

.nav-dropdown-link:hover {
    color: var(--primary);
    background: rgba(26, 95, 180, 0.06);
    padding-left: 24px;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.hotline {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(30,87,153,0.3);
    white-space: nowrap;
    transition: var(--transition);
}

.hotline:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(30,87,153,0.4);
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-light);
    border-radius: 8px;
    font-size: 18px;
    color: var(--primary);
    cursor: pointer;
}

/* ==================== Hero 轮播 ==================== */
.hero {
    position: relative;
    height: 640px;
    margin-top: 72px;
    overflow: hidden;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.8s ease;
    display: flex;
    align-items: center;
}

.slide.active { opacity: 1; }

.hero-content {
    max-width: 700px;
    color: #fff;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-title {
    font-size: 44px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-title .highlight {
    color: #8ec5ff;
}

.hero-desc {
    font-size: 17px;
    opacity: 0.95;
    margin-bottom: 35px;
    text-shadow: 0 1px 10px rgba(0,0,0,0.2);
}

.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: #fff;
    transform: scale(1.3);
}

/* ==================== 数据条 ==================== */
.stats-bar {
    background: var(--bg-white);
    padding: 35px 0;
    border-bottom: 1px solid var(--border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 10px;
}

.stat-item > i {
    font-size: 32px;
    color: var(--primary);
    opacity: 0.85;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.1;
}

.stat-plus, .stat-suffix {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
}

.stat-label {
    font-size: 13px;
    color: var(--text-gray);
    margin-top: 4px;
}

/* ==================== 我们的服务 ==================== */
.services {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 35px 25px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(30,87,153,0.2);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(30,87,153,0.1) 0%, rgba(41,137,216,0.15) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: var(--primary);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    transform: scale(1.08);
}

.service-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 18px;
    min-height: 72px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    transition: var(--transition);
}

.service-link:hover {
    gap: 10px;
    color: var(--primary-dark);
}

/* ==================== 恢复方案（标签切换） ==================== */
.solutions {
    background: var(--bg-white);
}

.solutions-tabs {
    max-width: 900px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 28px;
    border: 2px solid var(--border);
    background: var(--bg-white);
    color: var(--text-gray);
    font-size: 14px;
    font-weight: 500;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    border-color: var(--primary-light);
    color: var(--primary);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 12px rgba(30,87,153,0.3);
}

.tab-pane { display: none; animation: fadeIn 0.5s ease; }
.tab-pane.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.solution-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.solution-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 25px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.solution-item:hover {
    background: #eef4fb;
    transform: translateX(5px);
}

.solution-item > i {
    width: 46px;
    height: 46px;
    min-width: 46px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}

.solution-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.solution-item p {
    font-size: 13px;
    color: var(--text-gray);
}

/* ==================== 恢复流程 ==================== */
.process {
    background: linear-gradient(135deg, #f0f5ff 0%, #f7f9fc 100%);
}

.process-steps {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 140px;
    text-align: center;
    position: relative;
    padding: 30px 15px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.step-num {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.3;
}

.step-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
    box-shadow: 0 4px 15px rgba(30,87,153,0.3);
}

.step h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.step p {
    font-size: 12px;
    color: var(--text-gray);
    line-height: 1.6;
}

.step-arrow {
    display: flex;
    align-items: center;
    padding-top: 55px;
    color: var(--primary-light);
    font-size: 18px;
    opacity: 0.5;
}

/* ==================== 为什么选择我们 ==================== */
.why-us {
    background: var(--bg-white);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.why-card {
    padding: 35px 30px;
    border-radius: var(--radius-lg);
    background: var(--bg-light);
    transition: var(--transition);
    border: 1px solid transparent;
}

.why-card:hover {
    background: var(--bg-white);
    border-color: rgba(30,87,153,0.15);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.why-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
    margin-bottom: 20px;
}

.why-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.why-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ==================== 品牌合作 ==================== */
.brands {
    background: var(--bg-light);
    padding: 60px 0;
}

.brands-row {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 16px;
}

.brand-item {
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--bg-white);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-gray);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.brand-item:hover {
    border-color: var(--primary-light);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.brand-item i {
    color: var(--primary);
}

/* ==================== 关于我们 ==================== */
.about {
    background: var(--bg-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text {
    color: var(--text-gray);
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ==================== 成功案例（首页） ==================== */
.cases { background: linear-gradient(180deg, #f7f9fc 0%, #ffffff 100%); }
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.case-card {
    background: #fff;
    border-radius: 10px;
    padding: 22px 24px;
    border: 1px solid #eef1f6;
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
}
.case-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(26,95,180,0.08);
}
.case-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--primary);
    background: rgba(26,95,180,0.08);
    padding: 2px 10px;
    border-radius: 4px;
    font-weight: 600;
    margin-bottom: 12px;
}
.case-title {
    font-size: 15px;
    font-weight: 700;
    color: #1a2b4a;
    margin-bottom: 8px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-desc {
    font-size: 13px;
    color: #6b7a90;
    line-height: 1.7;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px dashed #e6ebf3;
}
.case-date { font-size: 12px; color: #99aabb; }
.case-result {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
}
.case-result i { margin-right: 3px; }

.cases-more-wrap { text-align: center; margin-top: 36px; }
.cases-more-btn {
    display: inline-block;
    padding: 12px 32px;
    background: var(--primary);
    color: #fff;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
    border: 2px solid var(--primary);
}
.cases-more-btn:hover {
    background: #fff;
    color: var(--primary);
}

/* ==================== 案例列表页 cases.html ==================== */
.cases-page {
    padding: 110px 0 60px;
    background: #fff;
    min-height: 70vh;
}
.cases-hero {
    text-align: center;
    padding: 50px 20px 40px;
    border-bottom: 1px solid #eef1f6;
    margin-bottom: 40px;
}
.cases-hero-line {
    width: 40px; height: 3px;
    background: var(--primary);
    margin: 0 auto 20px;
}
.cases-hero-title {
    font-size: 40px;
    font-weight: 800;
    color: #1a2b4a;
    margin-bottom: 8px;
    letter-spacing: 2px;
}
.cases-hero-en {
    font-size: 13px;
    letter-spacing: 6px;
    color: #b0bac8;
    font-weight: 500;
    margin-bottom: 14px;
}
.cases-hero-desc {
    font-size: 14px;
    color: #6b7a90;
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.8;
}

.cases-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid #eef1f6;
    border-radius: 10px;
    overflow: hidden;
}
.cases-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 22px 28px;
    border-bottom: 1px solid #f3f5f9;
    cursor: pointer;
    transition: all 0.25s;
    background: #fff;
}
.cases-item:last-child { border-bottom: none; }
.cases-item:hover {
    background: #fafbfd;
    padding-left: 34px;
}
.cases-item:hover .cases-item-title { color: var(--primary); }
.cases-item:hover .cases-item-arrow { opacity: 1; transform: translateX(0); }

.cases-item-left {
    flex-shrink: 0;
    width: 80px;
    text-align: left;
}
.cases-item-num {
    display: block;
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: 4px;
}
.cases-item-date {
    font-size: 12px;
    color: #b0bac8;
}
.cases-item-right {
    flex: 1;
    min-width: 0;
}
.cases-item-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--primary);
    background: rgba(26,95,180,0.08);
    padding: 2px 10px;
    border-radius: 4px;
    font-weight: 600;
    margin-bottom: 8px;
    margin-right: 8px;
}
.cases-item-title {
    font-size: 16px;
    font-weight: 700;
    color: #1a2b4a;
    margin-bottom: 6px;
    line-height: 1.5;
    transition: color 0.25s;
}
.cases-item-desc {
    font-size: 13px;
    color: #6b7a90;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.cases-item-result {
    display: inline-block;
    margin-top: 10px;
    font-size: 12px;
    font-weight: 600;
    color: #22a06b;
}
.cases-item-result i { margin-right: 3px; }
.cases-item-arrow {
    flex-shrink: 0;
    color: #ccd3dd;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s;
    font-size: 14px;
}

.cases-more-wrap { text-align: center; margin-top: 50px; }

/* ==================== 案例详情弹窗 ==================== */
.case-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s;
    padding: 20px;
}
.case-modal-overlay.show { opacity: 1; visibility: visible; }
.case-modal {
    background: #fff;
    border-radius: 12px;
    max-width: 680px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    padding: 40px 36px 32px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.25);
    transform: translateY(20px);
    transition: transform 0.25s;
}
.case-modal-overlay.show .case-modal { transform: translateY(0); }
.case-modal-close {
    position: absolute;
    top: 14px; right: 16px;
    width: 34px; height: 34px;
    border: none;
    background: #f0f3f8;
    border-radius: 50%;
    cursor: pointer;
    font-size: 13px;
    color: #667;
    transition: all 0.2s;
}
.case-modal-close:hover { background: var(--primary); color: #fff; }
.case-modal-tag {
    display: inline-block;
    background: rgba(26,95,180,0.08);
    color: var(--primary);
    font-size: 12px;
    padding: 3px 12px;
    border-radius: 4px;
    font-weight: 600;
    margin-bottom: 14px;
}
.case-modal-title {
    font-size: 22px;
    font-weight: 800;
    color: #1a2b4a;
    margin-bottom: 12px;
    line-height: 1.4;
}
.case-modal-meta {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 20px;
    font-size: 13px;
    color: #99aabb;
    flex-wrap: wrap;
    padding-bottom: 16px;
    border-bottom: 1px solid #eef1f6;
}
.case-modal-meta i { margin-right: 5px; }
.case-modal-result {
    font-weight: 600;
    color: #22a06b !important;
}
.case-modal-desc {
    font-size: 14px;
    color: #4a5568;
    line-height: 1.9;
    padding: 14px 16px;
    background: #f7f9fc;
    border-radius: 6px;
    margin-bottom: 16px;
}
.case-modal-detail {
    font-size: 14px;
    color: #4a5568;
    line-height: 2;
}
.case-modal-detail br { margin-bottom: 6px; }

/* 响应式 */
@media (max-width: 900px) {
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-item { padding: 18px 16px; gap: 14px; }
    .cases-item:hover { padding-left: 22px; }
    .cases-item-left { width: 60px; }
    .cases-item-num { font-size: 20px; }
    .cases-hero-title { font-size: 28px; }
}
@media (max-width: 600px) {
    .cases-grid { grid-template-columns: 1fr; }
    .cases-item-arrow { display: none; }
    .cases-item-left { width: auto; }
    .cases-item-num { font-size: 18px; }
    .cases-hero { padding: 30px 16px; }
}

/* ==================== 专业设备 ==================== */
.equipment {
    background: var(--bg-white);
}

.equipment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.equipment-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
    text-align: center;
}

.equipment-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.equipment-img {
    height: 240px;
    overflow: hidden;
    background: #f0f3f7;
}

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

.equipment-card:hover .equipment-img img {
    transform: scale(1.06);
}

.equipment-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin: 22px 20px 10px;
}

.equipment-desc {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.8;
    margin: 0 20px 26px;
}

/* ==================== FAQ ==================== */
.faq {
    background: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-white);
    border-radius: var(--radius);
    margin-bottom: 15px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid transparent;
    transition: var(--transition);
}

.faq-item.open {
    border-color: rgba(30,87,153,0.2);
    box-shadow: var(--shadow);
}

.faq-q {
    width: 100%;
    padding: 20px 25px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    text-align: left;
    transition: var(--transition);
}

.faq-q:hover {
    color: var(--primary);
}

.faq-q i {
    color: var(--primary);
    transition: transform 0.3s ease;
}

.faq-item.open .faq-q i {
    transform: rotate(180deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-item.open .faq-a {
    max-height: 300px;
}

.faq-a p {
    padding: 0 25px 20px;
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.8;
}

/* ==================== 联系我们 ==================== */
.contact {
    background: var(--bg-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

/* ==================== 地图导航 ==================== */
.contact-map {
    margin-top: 10px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    background: #f0f3f7;
}

.contact-map #leafletContactMap {
    width: 100%;
    height: 220px;
    display: block;
    background: #e8edf2;
}

.contact-map .leaflet-container {
    font-family: inherit;
}

.map-actions {
    display: flex;
    gap: 10px;
    padding: 12px 14px;
    background: #fff;
    border-top: 1px solid var(--border);
}

.map-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 6px;
    border: 1px solid var(--primary);
    background: #fff;
    color: var(--primary);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.map-btn:hover {
    background: var(--primary);
    color: #fff;
}

.map-btn:active {
    transform: scale(0.97);
}

.map-btn i {
    font-size: 13px;
}

@media (max-width: 600px) {
    .contact-map #leafletContactMap { height: 180px; }
    .map-btn { font-size: 12px; padding: 7px 4px; gap: 4px; }
}

.info-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.info-icon {
    width: 50px;
    height: 50px;
    min-width: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}

.info-item h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.info-item p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.6;
}

.hotline-num {
    font-size: 22px !important;
    font-weight: 700;
    color: var(--primary) !important;
    margin-bottom: 2px;
}

.contact-form {
    background: var(--bg-light);
    padding: 35px;
    border-radius: var(--radius-lg);
}

.contact-form h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-desc {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text-dark);
    background: var(--bg-white);
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(41,137,216,0.1);
}

.form-group textarea {
    resize: vertical;
}

/* ==================== 悬浮咨询 ==================== */
.float-contact {
    position: fixed;
    right: 20px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.float-item {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 11px;
    box-shadow: 0 4px 15px rgba(30,87,153,0.35);
    transition: var(--transition);
    gap: 2px;
}

.float-item i {
    font-size: 18px;
}

.float-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(30,87,153,0.5);
}

/* ==================== 页脚 ==================== */
.footer {
    background: #0f1f3d;
    color: #cfd8e3;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo > i {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
}

.footer-logo span {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    display: block;
}

.footer-logo small {
    font-size: 10px;
    letter-spacing: 1.5px;
    color: #8ec5ff;
}

.footer-desc {
    font-size: 13px;
    line-height: 1.8;
    margin-bottom: 20px;
    opacity: 0.85;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 22px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary-light);
    border-radius: 1px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a,
.footer-contact li {
    font-size: 13px;
    opacity: 0.85;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-col ul li a:hover {
    color: #fff;
    opacity: 1;
    padding-left: 5px;
}

.footer-contact i {
    color: var(--primary-light);
    width: 16px;
}

.footer-bottom {
    background: rgba(0,0,0,0.2);
    padding: 18px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 12px;
    opacity: 0.7;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1100px) {
    .services-grid { grid-template-columns: repeat(3, 1fr); }
    .equipment-grid { grid-template-columns: repeat(3, 1fr); }
    .brands-row { grid-template-columns: repeat(4, 1fr); }
    .why-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
    .nav-list { display: none; }
    .menu-toggle { display: block; }

    .nav.open .nav-list {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        gap: 5px;
    }

    .nav.open .nav-list > li { width: 100%; }

    .nav-dropdown {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        background: #f7f9fc;
        border-radius: 8px;
        margin: 6px 0 10px 0;
        padding: 6px 0;
        min-width: 0;
        display: none;
    }

    .nav-item-has-dropdown.dropdown-open .nav-dropdown {
        display: block;
    }

    .nav-item-has-dropdown:hover .nav-caret { transform: none; }
    .nav-item-has-dropdown.dropdown-open .nav-caret { transform: rotate(180deg); }

    .hero { height: 500px; }
    .hero-title { font-size: 32px; }
    .hero-desc { font-size: 15px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .equipment-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { gap: 10px; }
    .step { min-width: calc(50% - 10px); }
    .step-arrow { display: none; }
    .solution-list { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }

    .section { padding: 60px 0; }
    .section-title { font-size: 28px; }
}

@media (max-width: 600px) {
    .hotline span { display: none; }
    .hotline { padding: 10px 12px; }
    .hero { height: 420px; margin-top: 64px; }
    .hero-title { font-size: 26px; }
    .hero-btns .btn { padding: 10px 18px; font-size: 14px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .stat-num { font-size: 22px; }
    .services-grid { grid-template-columns: 1fr; }
    .equipment-grid { grid-template-columns: 1fr; }
    .why-grid { grid-template-columns: 1fr; }
    .brands-row { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .process-steps { flex-direction: column; }
    .step { min-width: 100%; }

    .contact-form { padding: 25px; }
    .section { padding: 50px 0; }
    .section-title { font-size: 24px; }
}