/* 广西信安锐达科技有限公司企业门户网站 - 明亮专业风格主样式 */

/* ===== 基础重置与全局样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-white);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--duration-normal) ease;
}

ul {
    list-style: none;
}

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

/* ===== 顶部导航栏 - 明亮风格 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    z-index: 100;
    transition: all var(--duration-normal) ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.99);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.nav-container {
    max-width: var(--max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-text {
    font-size: 20px;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-medium);
    color: var(--text-main);
    position: relative;
    padding: 8px 0;
    transition: all var(--duration-normal) ease;
}

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

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

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

.nav-link.active {
    color: var(--primary-blue);
    font-weight: var(--font-weight-semibold);
}

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

.nav-cta {
    padding: 10px 24px;
    background: var(--primary-blue);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-semibold);
    border: none;
    cursor: pointer;
    transition: all var(--duration-normal) ease;
    white-space: nowrap;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.25);
    background: #0052a3;
}

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

.nav-hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all var(--duration-normal) ease;
}

.nav-hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.active span:nth-child(2) {
    opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero区域 - 明亮专业 ===== */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 50%, #f0f4f8 100%);
}

.particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.hero-gradient-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
        rgba(0, 102, 204, 0.03) 0%,
        rgba(255, 255, 255, 0) 50%,
        rgba(0, 102, 204, 0.05) 100%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    width: 90%;
    text-align: center;
    padding: var(--spacing-xxl);
}

.hero-title {
    font-family: var(--font-title);
    font-size: var(--font-size-hero);
    font-weight: var(--font-weight-black);
    line-height: 1.15;
    margin-bottom: var(--spacing-xl);
    color: var(--text-dark);
    letter-spacing: 2px;
    animation: heroTitleFadeIn 1s ease forwards;
}

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

.hero-subtitle {
    font-size: 28px;
    font-weight: var(--font-weight-normal);
    color: var(--text-main);
    margin-bottom: var(--spacing-xxl);
    animation: heroSubtitleFadeIn 1s ease 0.3s forwards;
    opacity: 0;
}

@keyframes heroSubtitleFadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-cta-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
    animation: heroCTAFadeIn 1s ease 0.5s forwards;
    opacity: 0;
}

@keyframes heroCTAFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-cta-primary {
    padding: 16px 32px;
    background: var(--primary-blue);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-bold);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--duration-normal) ease;
    border: none;
    cursor: pointer;
}

.hero-cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.25);
    background: #0052a3;
}

.hero-cta-secondary {
    padding: 16px 32px;
    background: white;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    border-radius: var(--radius-full);
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-semibold);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--duration-normal) ease;
    cursor: pointer;
}

.hero-cta-secondary:hover {
    background: var(--primary-blue);
    color: white;
    transform: translateY(-2px);
}

.hero-badges {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    animation: heroBadgesFadeIn 1s ease 0.7s forwards;
    opacity: 0;
}

@keyframes heroBadgesFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: white;
    border-radius: var(--radius-full);
    border: 1px solid rgba(0, 102, 204, 0.15);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
    transition: all var(--duration-normal) ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.15);
    border-color: var(--primary-blue);
}

.badge-cyan {
    border-left: 3px solid var(--primary-blue);
}

.badge-purple {
    border-left: 3px solid #7c3aed;
}

.badge-green {
    border-left: 3px solid #10b981;
}

.badge-icon {
    font-size: 18px;
}

.badge-text {
    font-size: var(--font-size-small);
}

/* ===== Section通用样式 ===== */
.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-lg);
}

.section-title {
    font-family: var(--font-title);
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    text-align: center;
    margin-bottom: var(--spacing-md);
    letter-spacing: 1px;
}

.section-subtitle {
    font-size: 18px;
    font-weight: var(--font-weight-normal);
    color: var(--text-main);
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

/* ===== 产品矩阵区域 - 明亮风格 ===== */
.products-section {
    padding-top: var(--spacing-xxl);
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.product-card {
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--duration-normal) ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration-normal) ease;
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(0, 102, 204, 0.12);
    border-color: var(--primary-blue);
}

.product-image {
    width: 100%;
    height: 200px;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all var(--duration-normal) ease;
}

.product-card:hover .product-img {
    transform: scale(1.05);
}

.product-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    text-align: center;
    transition: all var(--duration-normal) ease;
}

.product-card:hover .product-icon {
    transform: scale(1.1);
}

.product-name {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.product-position {
    font-size: var(--font-size-sub);
    font-weight: var(--font-weight-normal);
    color: var(--text-main);
    margin-bottom: var(--spacing-md);
    text-align: center;
    line-height: 1.5;
}

.product-metrics {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(0, 102, 204, 0.04);
    border-radius: var(--radius-sm);
}

.metric {
    text-align: center;
}

.metric-value {
    font-size: 32px;
    font-weight: var(--font-weight-extrabold);
    color: var(--primary-blue);
    line-height: 1;
}

.metric-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-main);
    margin-top: 4px;
}

.product-link {
    display: block;
    text-align: center;
    color: var(--primary-blue);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    margin-top: var(--spacing-sm);
    transition: all var(--duration-normal) ease;
}

.product-link:hover {
    color: #0052a3;
    background: rgba(0, 102, 204, 0.04);
}

/* ===== 核心技术能力展示 - 4象限 ===== */
.tech-section {
    padding-top: var(--spacing-xxl);
    background: white;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.tech-quadrant {
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--duration-normal) ease;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.tech-quadrant:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 102, 204, 0.12);
    border-color: var(--primary-blue);
}

.tech-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.tech-title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.tech-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.tech-list li {
    font-size: var(--font-size-sub);
    font-weight: var(--font-weight-medium);
    color: var(--text-main);
    padding-left: var(--spacing-md);
    position: relative;
}

.tech-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: var(--font-weight-bold);
}

/* ===== 数据展示区域 ===== */
.cases-section {
    padding-top: var(--spacing-xxl);
    background: linear-gradient(180deg, #f8f9fa 0%, white 100%);
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.data-card {
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--duration-normal) ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.data-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 102, 204, 0.12);
    border-color: var(--primary-blue);
}

.data-value {
    font-size: 64px;
    font-weight: var(--font-weight-black);
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
    animation: dataValueCountUp 2s ease forwards;
}

@keyframes dataValueCountUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.data-label {
    font-size: var(--font-size-sub);
    font-weight: var(--font-weight-medium);
    color: var(--text-main);
    margin-bottom: var(--spacing-md);
}

.data-progress {
    width: 100%;
    height: 4px;
    background: rgba(0, 102, 204, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--primary-blue);
    border-radius: 2px;
    animation: progressFill 2s ease forwards;
    animation-play-state: paused;
}

@keyframes progressFill {
    from { width: 0; }
}

/* ===== 解决方案区域 ===== */
.solutions-section {
    padding-top: var(--spacing-xxl);
    background: white;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.solution-card {
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--duration-normal) ease;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.solution-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 102, 204, 0.12);
    border-color: var(--primary-blue);
}

.solution-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.solution-title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.solution-desc {
    font-size: var(--font-size-sub);
    font-weight: var(--font-weight-normal);
    color: var(--text-main);
    line-height: 1.5;
}

/* ===== 关于我们区域 ===== */
.about-section {
    padding-top: var(--spacing-xxl);
    background: linear-gradient(180deg, white 0%, #f8f9fa 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxl);
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.about-desc {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-normal);
    color: var(--text-main);
    line-height: 1.8;
}

.about-desc strong {
    color: var(--primary-blue);
    font-weight: var(--font-weight-semibold);
}

.about-certifications {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.cert-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-md);
    transition: all var(--duration-normal) ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.cert-item:hover {
    transform: translateX(4px);
    border-color: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.12);
}

.cert-icon {
    font-size: 32px;
}

.cert-text {
    font-size: var(--font-size-sub);
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
}

/* ===== 联系表单区域 ===== */
.contact-section {
    padding-top: var(--spacing-xxl);
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-md);
    transition: all var(--duration-normal) ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.info-item:hover {
    transform: translateX(4px);
    border-color: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.12);
}

.info-icon {
    font-size: 32px;
    color: var(--primary-blue);
}

.info-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.info-title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
}

.info-text {
    font-size: var(--font-size-sub);
    font-weight: var(--font-weight-normal);
    color: var(--text-main);
    line-height: 1.5;
}

.parent-company {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(0, 102, 204, 0.04);
    border: 1px solid rgba(0, 102, 204, 0.15);
    border-radius: var(--radius-md);
}

.parent-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.parent-text {
    font-size: var(--font-size-sub);
    font-weight: var(--font-weight-medium);
    color: var(--primary-blue);
}

.contact-form-wrapper {
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.form-title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.form-input {
    width: 100%;
    padding: 14px var(--spacing-md);
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-h4);
    font-family: var(--font-body);
    color: var(--text-dark);
    transition: all var(--duration-normal) ease;
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-textarea {
    width: 100%;
    padding: 14px var(--spacing-md);
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-h4);
    font-family: var(--font-body);
    color: var(--text-dark);
    resize: vertical;
    min-height: 100px;
    transition: all var(--duration-normal) ease;
}

.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-submit {
    width: 100%;
    padding: 16px;
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: all var(--duration-normal) ease;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.25);
    background: #0052a3;
}

/* ===== 页脚 ===== */
.footer {
    padding: var(--spacing-xl) var(--spacing-lg);
    background: #f8f9fa;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-copyright {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-copyright p {
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-normal);
    color: var(--text-main);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-links a {
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    color: var(--text-main);
    transition: color var(--duration-normal) ease;
}

.footer-links a:hover {
    color: var(--primary-blue);
}

/* ===== 响应式适配 ===== */

/* 平板(768-1200px) */
@media (min-width: 768px) and (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

    .about-content {
        grid-template-columns: 1fr;
    }

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

/* 移动端(<768px) */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-top: 1px solid rgba(0, 0, 0, 0.08);
        padding: var(--spacing-lg);
        flex-direction: column;
        gap: var(--spacing-md);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-link {
        font-size: 18px;
        padding: 12px 0;
        color: var(--text-dark);
    }

    .nav-cta {
        display: none;
    }

    .nav-hamburger {
        display: flex;
    }

    .hero-title {
        font-size: var(--font-size-hero);
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .hero-cta-group {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .hero-cta-primary,
    .hero-cta-secondary {
        width: 100%;
        justify-content: center;
    }

    .hero-badges {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

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

    .products-grid {
        grid-template-columns: 1fr;
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }

    .data-grid {
        grid-template-columns: 1fr;
    }

    .solutions-grid {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

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

    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}

/* 超小屏幕(<480px) */
@media (max-width: 480px) {
    .hero-title {
        font-size: 40px;
    }

    .section-title {
        font-size: 32px;
    }

    .data-value {
        font-size: 48px;
    }

    .product-icon {
        font-size: 36px;
    }

    .tech-icon {
        font-size: 36px;
    }
}