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

:root {
    --primary: #1565c0;
    --primary-dark: #0d47a1;
    --primary-light: #1976d2;
    --accent: #42a5f5;
    --text: #2c3e50;
    --text-light: #5a6c7d;
    --bg: #ffffff;
    --bg-gray: #f5f7fa;
    --border: #e1e8ed;
    --shadow: 0 2px 12px rgba(0,0,0,0.06);
    --shadow-hover: 0 8px 24px rgba(21,101,192,0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--bg);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color .2s;
}

a:hover {
    color: var(--primary);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

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

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

.logo-mark {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 50px;
    width: auto;
    display: block;
}

.logo-cn {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
}

.logo-en {
    font-size: 11px;
    color: var(--text-light);
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    gap: 36px;
    align-items: center;
}

.nav-menu a {
    font-size: 15px;
    color: var(--text);
    padding: 6px 0;
    position: relative;
    font-weight: 500;
}

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

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all .3s;
}

/* ===== Hero 区域 ===== */
.hero {
    position: relative;
    padding: 100px 0 80px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(21,101,192,0.92) 0%, rgba(13,71,161,0.88) 100%),
                url('../images/hero-bg.jpg') center center / cover no-repeat;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-bg.jpg') center center / cover no-repeat;
    z-index: 0;
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 16px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 22px;
    color: #90caf9;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
    max-width: 720px;
    margin: 0 auto 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.hero .btn-primary {
    background: #fff;
    color: var(--primary-dark);
    border-color: #fff;
}

.hero .btn-primary:hover {
    background: #e3f2fd;
    border-color: #e3f2fd;
    color: var(--primary-dark);
}

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

.hero .btn-outline:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border-color: #fff;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.stat-item {
    text-align: center;
}

.stat-num {
    font-size: 36px;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-top: 8px;
}

/* ===== 通用按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all .2s;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

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

.btn-large {
    padding: 14px 40px;
    font-size: 16px;
}

/* ===== 制造能力流程 ===== */
.capacity-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.capacity-stage {
    background: #fff;
    border: 2px solid #1565c0;
    border-radius: 12px;
    padding: 28px 24px;
    width: 240px;
    text-align: center;
    transition: all .3s;
}

.capacity-stage:nth-child(2),
.capacity-stage:nth-child(6) {
    border-color: #42a5f5;
}

.capacity-stage:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.capacity-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
}

.capacity-stage h3 {
    font-size: 20px;
    color: var(--primary-dark);
    margin-bottom: 16px;
    font-weight: 700;
}

.capacity-info {
    background: #f5f7fa;
    border-radius: 8px;
    padding: 12px;
}

.capacity-line {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 4px;
}

.capacity-num {
    font-size: 18px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 10px;
}

.capacity-num:last-child {
    margin-bottom: 0;
}

.capacity-arrow {
    font-size: 36px;
    color: var(--primary);
    font-weight: 300;
}

/* ===== 通用 Section ===== */
.section {
    padding: 80px 0;
}

.section-gray {
    background: var(--bg-gray);
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-header h2 {
    font-size: 36px;
    color: var(--text);
    margin-bottom: 12px;
    font-weight: 700;
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
}

/* ===== 页面头部 ===== */
.page-header {
    background: linear-gradient(135deg, rgba(21,101,192,0.85) 0%, rgba(25,118,210,0.80) 100%), url('../images/page-header-bg.jpg');
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 80px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

/* ===== 服务卡片（首页） ===== */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    padding: 36px 28px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
    transition: all .3s;
    display: block;
}

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

.service-icon {
    width: 64px;
    height: 64px;
    background: #e3f2fd;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 20px;
    color: var(--text);
    margin-bottom: 12px;
    font-weight: 600;
}

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

/* ===== 优势 ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.advantage-item {
    background: #fff;
    padding: 36px 28px;
    border-radius: 12px;
    text-align: center;
    transition: all .3s;
}

.advantage-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.advantage-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.advantage-item h3 {
    font-size: 18px;
    color: var(--text);
    margin-bottom: 12px;
    font-weight: 600;
}

.advantage-item p {
    font-size: 14px;
    color: var(--text-light);
}

/* ===== 行业领域 ===== */
.industry-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.industry-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px 16px;
    text-align: center;
    transition: all .3s;
}

.industry-item:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.industry-icon {
    font-size: 36px;
    margin-bottom: 8px;
}

.industry-item span {
    font-size: 14px;
    color: var(--text);
    font-weight: 500;
}

/* ===== 客户 Logo ===== */
.clients-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.client-item {
    background: #fff;
    border: 1px solid #e1e8ed;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    color: #94a3b8;
    font-size: 16px;
    transition: all .3s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
}

.client-item:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.client-item img {
    max-width: 100%;
    max-height: 80px;
    width: 100%;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.15));
    transition: all .3s;
}

.client-item:hover img {
    transform: scale(1.05);
}

.clients-note {
    text-align: center;
    color: var(--text-light);
    font-size: 14px;
    margin-top: 24px;
    font-style: italic;
}

/* ===== CTA ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: 64px 0;
    text-align: center;
}

.cta-section h2 {
    font-size: 32px;
    margin-bottom: 12px;
    font-weight: 700;
}

.cta-section p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 28px;
}

.cta-section .btn-primary {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

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

/* ===== 关于页 ===== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 32px;
    color: var(--text);
    margin-bottom: 20px;
    font-weight: 700;
}

.about-text p {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-text strong {
    color: var(--primary);
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.about-image img {
    width: 100%;
    max-width: 500px;
    border-radius: 12px;
    object-fit: contain;
}

.image-placeholder {
    background: #f0f7ff;
    border-radius: 12px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== 时间线 ===== */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 80px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary);
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -58px;
    top: 8px;
    width: 14px;
    height: 14px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(21,101,192,0.15);
}

.timeline-year {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.timeline-content {
    background: #fff;
    padding: 20px 24px;
    border-radius: 8px;
    border-left: 3px solid var(--primary);
}

.timeline-content h3 {
    font-size: 18px;
    color: var(--text);
    margin-bottom: 6px;
    font-weight: 600;
}

.timeline-content p {
    font-size: 14px;
    color: var(--text-light);
}

/* ===== 研发流程 ===== */
.rd-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.rd-step {
    background: #fff;
    border: 2px solid var(--primary);
    border-radius: 12px;
    padding: 24px 16px;
    width: 160px;
    text-align: center;
}

.rd-num {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    line-height: 36px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 10px;
}

.rd-step h4 {
    font-size: 16px;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.rd-step p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.5;
}

.rd-arrow {
    font-size: 28px;
    color: var(--primary);
}

.rd-team {
    text-align: center;
    background: #fff;
    padding: 32px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.rd-team h3 {
    font-size: 22px;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.rd-team p {
    font-size: 14px;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* ===== 制造流程 ===== */
.mfg-flow {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.mfg-stage {
    background: #fff;
    border-radius: 10px;
    padding: 20px 16px;
    border-top: 4px solid var(--primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.mfg-stage h4 {
    font-size: 15px;
    color: var(--primary-dark);
    margin-bottom: 12px;
    font-weight: 700;
}

.mfg-stage ul li {
    padding: 4px 0 4px 14px;
    font-size: 13px;
    color: var(--text-light);
    position: relative;
}

.mfg-stage ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* ===== 设备展示 ===== */
.equipment-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.equipment-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 24px 16px;
    text-align: center;
    transition: all .3s;
}

.equipment-item:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.equipment-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 12px;
}

.equipment-item h4 {
    font-size: 15px;
    color: var(--text);
    font-weight: 600;
}

.equipment-photo {
    padding: 0;
    overflow: hidden;
}

.equipment-photo img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.equipment-photo h4 {
    margin-top: 12px;
    padding: 0 16px;
}

.equipment-photo p {
    font-size: 12px;
    color: var(--text-light);
    padding: 0 16px 16px;
    margin-top: 4px;
}

.equipment-with-photo {
    grid-template-columns: repeat(3, 1fr);
}

/* ===== 文化 ===== */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.culture-card {
    background: #fff;
    padding: 36px 28px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all .3s;
}

.culture-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.culture-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.culture-card h3 {
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 12px;
    font-weight: 600;
}

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

/* ===== 资质 ===== */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.cert-card {
    background: #fff;
    padding: 32px 16px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all .3s;
}

.cert-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.cert-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.cert-card h3 {
    font-size: 16px;
    color: var(--primary-dark);
    margin-bottom: 6px;
    font-weight: 700;
}

.cert-card p {
    font-size: 12px;
    color: var(--text-light);
}

/* ===== 服务详情 ===== */
.service-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.service-detail-grid.reverse {
    direction: rtl;
}

.service-detail-grid.reverse > * {
    direction: ltr;
}

.service-tag {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-detail-content h2 {
    font-size: 32px;
    color: var(--text);
    margin-bottom: 16px;
    font-weight: 700;
}

.lead {
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 24px;
}

.feature-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--primary);
    font-weight: 700;
}

/* ===== 产品分类 ===== */
.product-categories {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-cat {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 24px 20px;
    transition: all .3s;
}

.product-cat:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.product-cat h3 {
    font-size: 18px;
    color: var(--primary-dark);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid #e3f2fd;
    font-weight: 700;
}

.product-list li {
    padding: 6px 0 6px 18px;
    font-size: 14px;
    color: var(--text-light);
    position: relative;
    line-height: 1.6;
}

.product-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 12px;
}

/* ===== 案例中心 ===== */
.cases-industry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-industry-card {
    background: #fff;
    padding: 32px 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all .3s;
}

.case-industry-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.case-industry-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.case-industry-card h3 {
    font-size: 20px;
    color: var(--text);
    margin-bottom: 10px;
    font-weight: 600;
}

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

.case-projects {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.case-project {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: all .3s;
}

.case-project:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.case-project-image {
    background: #f0f7ff;
    height: 240px;
    display: flex;
    align-items: stretch;
    justify-content: stretch;
    overflow: hidden;
    padding: 0;
}

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

.case-project-image .image-placeholder {
    background: transparent;
    padding: 20px;
}

.case-project-content {
    padding: 24px;
}

.case-tag {
    display: inline-block;
    background: #e3f2fd;
    color: var(--primary);
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 12px;
    margin-bottom: 10px;
}

.case-project-content h3 {
    font-size: 18px;
    color: var(--text);
    margin-bottom: 8px;
    font-weight: 600;
}

.case-project-content p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== 联系 ===== */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.contact-info-card {
    background: #fff;
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all .3s;
}

.contact-info-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.contact-info-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.contact-info-card h3 {
    font-size: 16px;
    color: var(--text);
    margin-bottom: 12px;
    font-weight: 600;
}

.contact-info-main {
    font-size: 18px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-info-sub {
    font-size: 13px;
    color: var(--text-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
}

.contact-form-wrap h2,
.map-wrap h2 {
    font-size: 26px;
    color: var(--text);
    margin-bottom: 8px;
    font-weight: 700;
}

.contact-form-wrap > p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 24px;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 14px;
    color: var(--text);
    margin-bottom: 6px;
    font-weight: 500;
}

.required {
    color: #e53935;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: all .2s;
    background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(21,101,192,0.1);
}

.form-tip {
    margin-top: 12px;
    font-size: 14px;
    color: var(--primary);
    min-height: 20px;
}

.map-placeholder {
    width: 100%;
    height: 320px;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 12px;
}

.map-tip {
    text-align: center;
    font-size: 14px;
    color: var(--text-light);
}

/* ===== 页脚 ===== */
.footer {
    background: #1a2b3c;
    color: #cbd5e1;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: #fff;
    font-size: 18px;
    font-weight: 600;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    opacity: 0.8;
}

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

.footer-col ul li {
    margin-bottom: 10px;
    font-size: 14px;
}

.footer-col ul li a {
    color: #cbd5e1;
    transition: color .2s;
}

.footer-col ul li a:hover {
    color: #fff;
}

.contact-list li {
    line-height: 1.7;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
    opacity: 0.7;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .service-grid,
    .advantages-grid,
    .cases-industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .industry-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .cert-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .contact-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        right: -100%;
        width: 70%;
        height: calc(100vh - 72px);
        background: #fff;
        flex-direction: column;
        gap: 0;
        padding: 24px;
        box-shadow: var(--shadow);
        transition: right .3s;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu a {
        width: 100%;
        padding: 14px 0;
        border-bottom: 1px solid var(--border);
    }

    .hero {
        padding: 60px 0 50px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .stat-num {
        font-size: 28px;
    }

    .section {
        padding: 50px 0;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .service-grid,
    .advantages-grid,
    .culture-grid,
    .cases-industry-grid,
    .case-projects {
        grid-template-columns: 1fr;
    }
    .mfg-flow {
        grid-template-columns: 1fr;
    }
    .equipment-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .equipment-with-photo {
        grid-template-columns: 1fr;
    }
    .rd-flow {
        flex-direction: column;
    }
    .rd-arrow {
        transform: rotate(90deg);
    }
    .product-categories {
        grid-template-columns: 1fr;
    }

    .industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .capacity-stage {
        width: 100%;
    }
    .capacity-arrow {
        transform: rotate(90deg);
    }

    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-intro,
    .service-detail-grid,
    .service-detail-grid.reverse,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .service-detail-grid.reverse {
        direction: ltr;
    }

    .contact-info-grid {
        grid-template-columns: 1fr;
    }

    .contact-form .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .page-header {
        padding: 50px 0;
    }

    .page-header h1 {
        font-size: 32px;
    }

    .cta-section h2 {
        font-size: 24px;
    }
}