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

:root {
    --primary-color: #2d7a3e;
    --secondary-color: #4a9d5f;
    --accent-color: #f39c12;
    --dark-green: #1a4d2e;
    --light-green: #e8f5e9;
    --text-dark: #333;
    --text-light: #666;
    --text-white: #fff;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

/* ===========================
   导航栏
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    color: var(--primary-color);
}

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

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

.logo-en {
    font-size: 10px;
    font-weight: 500;
    color: var(--text-light);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 15px;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* ===========================
   Hero Section
   =========================== */
.hero-section {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(45, 122, 62, 0.85), rgba(74, 157, 95, 0.75)),
                url('https://vodacdn.wtxhsoft.cn/voda/%E6%B2%99%E6%BC%A0%E7%94%9F%E6%80%81%E4%BF%AE%E5%A4%8D.avif') center/cover no-repeat;
    color: var(--text-white);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 20px;
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.3);
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: 28px;
    font-weight: 400;
    margin-bottom: 20px;
    opacity: 0.95;
}

.hero-description {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn {
    padding: 14px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--text-white);
}

.btn-primary:hover {
    background: #e67e22;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(243, 156, 18, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border-color: var(--text-white);
}

.btn-secondary:hover {
    background: var(--text-white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 30px;
    color: var(--text-white);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-15px); }
    60% { transform: translateX(-50%) translateY(-10px); }
}

/* 淡入动画 */
.fade-in {
    animation: fadeIn 1s ease-out;
}

.fade-in-delay-1 {
    animation: fadeIn 1s ease-out 0.3s both;
}

.fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.6s both;
}

.fade-in-delay-3 {
    animation: fadeIn 1s ease-out 0.9s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   通用区块样式
   =========================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--dark-green);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
    margin-top: 25px;
    font-weight: 400;
}

/* ===========================
   关于我们区块
   =========================== */
.about-section {
    background: var(--bg-light);
}

.company-structure {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.intro-card {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
}

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

.intro-icon {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.intro-card h3 {
    font-size: 28px;
    color: var(--dark-green);
    margin-bottom: 20px;
}

.intro-card p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-light);
}

.intro-card strong {
    color: var(--primary-color);
}

.subsection-title {
    font-size: 28px;
    color: var(--dark-green);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 600;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.solution-item {
    background: var(--bg-white);
    padding: 35px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 2px solid transparent;
}

.solution-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.solution-icon {
    font-size: 50px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.solution-item h4 {
    font-size: 20px;
    color: var(--dark-green);
    margin-bottom: 10px;
}

.solution-item p {
    font-size: 15px;
    color: var(--text-light);
}

.strategy-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 45px;
    border-radius: 15px;
    color: var(--text-white);
    box-shadow: var(--shadow-lg);
}

.strategy-card h3 {
    font-size: 28px;
    margin-bottom: 25px;
    text-align: center;
}

.strategy-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.strategy-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 16px;
    line-height: 1.6;
}

.strategy-list i {
    font-size: 20px;
    color: var(--accent-color);
}

/* ===========================
   核心价值观区块
   =========================== */
.values-section {
    background: var(--bg-white);
}

.values-grid {
    display: grid;
    /* 修改点：将 repeat(3, 1fr) 改为 repeat(2, 1fr) */
    grid-template-columns: repeat(2, 1fr); 
    gap: 30px;
    /* 增加：限制宽度并居中，使 2x2 布局更紧凑 */
    max-width: 900px;
    margin: 0 auto;
}

.value-card {
    background: var(--light-green);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 3px solid transparent;
}

.value-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.value-letter {
    font-size: 80px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: 20px;
    color: var(--dark-green);
    margin-bottom: 10px;
    font-weight: 600;
}

.value-cn {
    font-size: 18px;
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 15px;
}

.value-desc {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.6;
}

.mission-statement {
    background: linear-gradient(135deg, var(--dark-green), var(--primary-color));
    padding: 60px 40px;
    border-radius: 20px;
    text-align: center;
    color: var(--text-white);
    box-shadow: var(--shadow-lg);
}

.mission-content h3 {
    font-size: 32px;
    margin-bottom: 30px;
    letter-spacing: 1px;
}

.mission-en {
    font-size: 24px;
    font-style: italic;
    margin-bottom: 20px;
    line-height: 1.6;
}

.mission-cn {
    font-size: 22px;
    line-height: 1.8;
    font-weight: 500;
}

/* ===========================
   痛点解决方案区块
   =========================== */
.pain-points-section {
    background: var(--bg-light);
}

.pain-points-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
}

.pain-point-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 5px solid var(--primary-color);
}

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

.pain-icon {
    font-size: 60px;
    color: var(--accent-color);
    margin-bottom: 25px;
}

.pain-point-card h3 {
    font-size: 24px;
    color: var(--dark-green);
    margin-bottom: 20px;
    font-weight: 600;
}

.pain-stat {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.stat-before {
    color: #e74c3c;
    font-size: 16px;
    font-weight: 600;
}

.stat-after {
    color: var(--primary-color);
    font-size: 18px;
    font-weight: 700;
}

.pain-stat i {
    color: var(--text-light);
    font-size: 18px;
}

.pain-point-card p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===========================
   核心优势区块
   =========================== */
.advantages-section {
    background: var(--bg-white);
}

.advantages-container {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.advantage-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.advantage-item.reverse {
    direction: rtl;
}

.advantage-item.reverse > * {
    direction: ltr;
}

.advantage-image {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    height: 400px;
}

.advantage-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.advantage-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 80px;
    color: rgba(255, 255, 255, 0.3);
    pointer-events: none;
}

.advantage-content h3 {
    font-size: 32px;
    color: var(--dark-green);
    margin-bottom: 20px;
    font-weight: 600;
}

.advantage-content > p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 25px;
}

.advantage-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.advantage-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-dark);
}

.advantage-features i {
    color: var(--secondary-color);
    font-size: 18px;
}

/* ===========================
   服务体系区块
   =========================== */
.services-section {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 变更为2列 */
    gap: 30px;
    max-width: 960px;
    margin: 0 auto;
}

.service-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-bottom: 4px solid var(--primary-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-bottom-color: var(--accent-color);
}

.service-icon {
    font-size: 55px;
    color: var(--secondary-color);
    margin-bottom: 25px;
}

.service-card h3 {
    font-size: 24px;
    color: var(--dark-green);
    margin-bottom: 15px;
    font-weight: 600;
}

.service-card > p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-list li {
    padding-left: 20px;
    position: relative;
    font-size: 14px;
    color: var(--text-dark);
}

.service-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: 16px;
}

/* ===========================
   天空地一体化区块
   =========================== */
.integration-section {
    background: linear-gradient(135deg, var(--dark-green), var(--primary-color));
    color: var(--text-white);
}

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

.integration-text h2 {
    font-size: 36px;
    margin-bottom: 25px;
    line-height: 1.3;
}

.integration-description {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.95;
}

.integration-layers {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.layer-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.layer-item i {
    font-size: 40px;
    color: var(--accent-color);
}

.layer-item h4 {
    font-size: 20px;
    margin-bottom: 5px;
}

.layer-item p {
    font-size: 14px;
    opacity: 0.9;
}

.integration-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    padding: 40px;
}

.diagram-layer {
    width: 100%;
    max-width: 350px;
    height: 120px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    font-size: 24px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition);
}

.diagram-layer:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.diagram-layer i {
    font-size: 50px;
}

.diagram-layer.sky {
    background: rgba(135, 206, 250, 0.2);
}

.diagram-layer.air {
    background: rgba(144, 238, 144, 0.2);
}

.diagram-layer.ground {
    background: rgba(160, 82, 45, 0.2);
}

/* ===========================
   发展成就区块
   =========================== */
.achievements-section {
    background: var(--bg-white);
}

.achievements-grid {
    display: grid;
    /* 修改点：改为 2 列排列 */
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.achievement-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--light-green);
    border-radius: 15px;
    transition: var(--transition);
}

.achievement-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.achievement-number {
    font-size: 54px;
    font-weight: 700;
    color: var(--primary-color);
    display: inline-block;
}

.achievement-unit {
    font-size: 30px;
    font-weight: 600;
    color: var(--secondary-color);
    display: inline-block;
}

.achievement-label {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark-green);
    margin: 15px 0 10px;
}

.achievement-desc {
    font-size: 14px;
    color: var(--text-light);
}

.strategic-goals {
    background: var(--bg-light);
    padding: 50px;
    border-radius: 15px;
}

.strategic-goals h3 {
    font-size: 32px;
    color: var(--dark-green);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 600;
}

.goals-grid {
    display: grid;
    /* 修改点：改为 2 列排列 */
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.goal-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--bg-white);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.goal-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.goal-item i {
    font-size: 35px;
    color: var(--secondary-color);
}

.goal-item p {
    font-size: 15px;
    color: var(--text-dark);
    line-height: 1.6;
}

/* ===========================
   联系我们区块
   =========================== */
.contact-section {
    background: var(--bg-light);
}

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

.company-full-name {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 3px solid var(--primary-color);
}

.company-full-name h3 {
    font-size: 24px;
    color: var(--dark-green);
    margin-bottom: 10px;
    font-weight: 600;
}

.company-en-name {
    font-size: 15px;
    color: var(--text-light);
    font-style: italic;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 22px;
    color: var(--text-white);
}

.contact-details h4 {
    font-size: 18px;
    color: var(--dark-green);
    margin-bottom: 8px;
    font-weight: 600;
}

.contact-details p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.6;
}

.contact-form-container {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-input {
    padding: 14px 18px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(45, 122, 62, 0.1);
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

.btn-block {
    width: 100%;
}

/* ===========================
   页脚
   =========================== */
.footer {
    background: var(--dark-green);
    color: var(--text-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-col h4 {
    font-size: 20px;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 18px;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.footer-col p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

/* 统一处理所有需要 4列 布局的容器 */
.values-grid,
.services-grid,
.achievements-grid,
.goals-grid {
    display: grid;
    /* 修改点：核心改为 4 列 */
    grid-template-columns: repeat(4, 1fr); 
    /* 修改点：间距从 40px 调小到 20px，防止内容挤压 */
    gap: 20px;          
    /* 修改点：最大宽度从 1000px 增加到 1200px，利用屏幕宽度 */
    max-width: 1200px;   
    margin: 0 auto;     
    padding: 20px 0;
}

/* 优化卡片内部的视觉体验 */
.value-card,
.service-item,
.achievement-item,
.goal-card {
    text-align: left;    /* 2x2布局下，左对齐比居中对齐更有高级感 */
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: flex-start; /* 图标和文字全部左对齐 */
    background: var(--bg-white);
    border-radius: 12px;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05); /* 增加极细的边框感 */
}

/* 图标样式微调 */
.value-card i,
.service-item i,
.achievement-item i,
.goal-card i {
    margin-bottom: 20px;
    font-size: 2.5rem;
    color: var(--primary-color);
}	

/* ===========================
   响应式设计
   =========================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 52px;
    }
    
    .hero-subtitle {
        font-size: 24px;
    }
    
    .advantage-item,
    .integration-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .advantage-item.reverse {
        direction: ltr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 25px;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 38px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .values-grid,
    .pain-points-grid,
    .services-grid,
    .achievements-grid,
    .goals-grid {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 60px 0;
    }
    
    .advantage-image {
        height: 300px;
    }
    
    .integration-diagram {
        padding: 20px;
    }
    
    .diagram-layer {
        max-width: 100%;
        height: 100px;
        font-size: 18px;
    }
    
    .diagram-layer i {
        font-size: 35px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 14px;
    }
    
    .value-letter {
        font-size: 60px;
    }
    
    .achievement-number {
        font-size: 45px;
    }
    
    .achievement-unit {
        font-size: 22px;
    }
    
    .logo-cn {
        font-size: 16px;
    }
    
    .logo-en {
        font-size: 9px;
    }
}

/* ===========================
   新增/修改样式：战略目标增强版
   =========================== */

/* 1. 容器样式升级：渐变背景 + 边框 + 阴影 */
.strategic-goals.enhanced-goals {
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%); /* 极淡的绿色渐变 */
    padding: 60px 40px;
    border-radius: 20px;
    border: 2px solid rgba(45, 122, 62, 0.15); /* 增加品牌色边框 */
    box-shadow: 0 10px 30px rgba(45, 122, 62, 0.08); /* 绿色系的投影 */
    position: relative;
    overflow: hidden;
    margin-top: 50px;
}

/* 装饰背景元素（可选，增加丰富度） */
.strategic-goals.enhanced-goals::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(45, 122, 62, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

/* 2. 标题区域样式 */
.goals-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
}

.goals-header i {
    font-size: 40px;
    color: var(--accent-color); /* 使用橙色强调 */
    margin-bottom: 15px;
    display: inline-block;
}

.goals-header h3 {
    font-size: 34px;
    color: var(--dark-green);
    font-weight: 800; /* 加粗标题 */
    letter-spacing: 1px;
    text-transform: uppercase;
    text-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* 3. 单个目标卡片样式增强 */
.goal-item.highlight-item {
    background: #ffffff;
    padding: 30px 25px;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column; /* 改为垂直布局，突出图标 */
    align-items: center;
    text-align: center;
    transition: all 0.4s ease;
    border-bottom: 4px solid transparent; /* 预留底部边框位置 */
    z-index: 1;
}

/* 悬停效果：上浮 + 底部亮条 + 阴影加深 */
.goal-item.highlight-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(45, 122, 62, 0.15);
    border-bottom-color: var(--accent-color); /* 悬停显示橙色底边 */
}

/* 图标包装器 */
.goal-icon-wrapper {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(45, 122, 62, 0.3);
    transition: transform 0.4s ease;
}

.goal-item.highlight-item:hover .goal-icon-wrapper {
    transform: rotateY(180deg); /* 图标翻转特效 */
}

.goal-item.highlight-item i {
    font-size: 30px;
    color: #fff;
    margin-bottom: 0; /* 重置原有样式 */
}

/* 4. 文字样式增强 */
.goal-item.highlight-item p {
    font-size: 16px;
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
}

.goal-item.highlight-item p strong {
    display: block; /* 让强调文字独占一行 */
    font-size: 20px;
    color: var(--primary-color);
    font-weight: 800;
    margin-bottom: 8px;
}

/* 适配移动端 */
@media (max-width: 768px) {
    .strategic-goals.enhanced-goals {
        padding: 40px 20px;
    }
    
    .goals-header h3 {
        font-size: 28px;
    }
    
    .goal-item.highlight-item {
        flex-direction: row; /* 移动端改回横向布局节省空间 */
        text-align: left;
        align-items: center;
        padding: 20px;
    }
    
    .goal-icon-wrapper {
        width: 50px;
        height: 50px;
        margin-bottom: 0;
        margin-right: 20px;
        flex-shrink: 0;
    }
    
    .goal-item.highlight-item i {
        font-size: 20px;
    }
    
    .goal-item.highlight-item p strong {
        font-size: 18px;
        margin-bottom: 4px;
    }
}

/* ===========================
   响应式补充：4列布局的适配
   =========================== */

/* 平板/小尺寸笔记本 (宽度小于 1200px 时) 自动变为 2 列 */
@media (max-width: 1200px) {
    .values-grid,
    .services-grid,
    .achievements-grid,
    .goals-grid {
        grid-template-columns: repeat(2, 1fr); /* 回退到 2 列 */
        gap: 30px;
        padding: 0 20px; /* 增加左右内边距防止贴边 */
    }
}

/* 手机端 (宽度小于 768px 时) 保持 1 列 (已有的代码通常已覆盖，但为保险可加上) */
@media (max-width: 768px) {
    .values-grid,
    .services-grid,
    .achievements-grid,
    .goals-grid {
        grid-template-columns: 1fr; /* 保持 1 列 */
    }
}


/* ===========================
   发展成就区块 - 新增样式
   =========================== */

/* 小标题样式 */
.subsection-center-title {
    text-align: center;
    font-size: 24px;
    color: var(--dark-green);
    margin-bottom: 30px;
    font-weight: 600;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.subsection-center-title::before,
.subsection-center-title::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 2px;
    background: var(--primary-color);
    opacity: 0.3;
}

.subsection-center-title::before { right: 100%; margin-right: 15px; }
.subsection-center-title::after { left: 100%; margin-left: 15px; }

/* 企业硬实力卡片样式 */
.strength-card {
    background: #fff;
    border: 1px solid #e8f5e9;
    box-shadow: 0 4px 10px rgba(45, 122, 62, 0.05);
}

.achievement-icon {
    font-size: 32px;
    color: var(--secondary-color);
    margin-bottom: 10px;
    opacity: 0.8;
}

.text-highlight {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 10px 0;
    line-height: 1.2;
}

/* 荣誉资质部分样式 */
.honors-wrapper {
    margin-top: 60px;
    background: #fff;
    border-radius: 15px;
    padding: 40px;
    box-shadow: var(--shadow-sm);
    border-left: 5px solid var(--accent-color);
}

.honors-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    border-bottom: 1px solid #eee;
    padding-bottom: 15px;
}

.honors-header i {
    font-size: 28px;
    color: var(--accent-color);
}

.honors-header h3 {
    font-size: 24px;
    color: var(--dark-green);
    font-weight: 600;
}

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

.honor-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px;
    transition: transform 0.3s ease;
}

.honor-item:hover {
    transform: translateX(5px);
    background: var(--bg-light);
    border-radius: 8px;
}

.honor-item i {
    color: var(--secondary-color);
    font-size: 18px;
    margin-top: 4px;
    flex-shrink: 0;
}

.honor-item p {
    font-size: 15px;
    color: var(--text-dark);
    line-height: 1.5;
}

.honor-item strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .honors-grid {
        grid-template-columns: 1fr;
    }
    
    .honors-wrapper {
        padding: 25px;
    }
    
    .text-highlight {
        font-size: 28px;
    }
}