/* ========================================
   智行顿官网 - 样式表
   配色：科技蓝 #378ADD 为主色调
   ======================================== */

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

:root {
    --primary: #378ADD;
    --primary-dark: #185FA5;
    --primary-light: #B5D4F4;
    --secondary: #0C447C;
    --accent: #3B6D11;
    --text: #1a1a1a;
    --text-light: #666666;
    --text-lighter: #999999;
    --bg: #FFFFFF;
    --bg-light: #F5F7FA;
    --bg-dark: #0C447C;
    --border: #E5E7EB;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

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

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: white;
    border-color: white;
}

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

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

.btn-white:hover {
    background: transparent;
    color: white;
    border-color: white;
}

/* 区段标题 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-light);
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
    padding: 20px 0;
}

.navbar.scrolled {
    background: white;
    padding: 12px 0;
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 600;
    color: white;
}

.logo-img {
    height: 78px;
    width: auto;
    object-fit: contain;
    mix-blend-mode: normal;
}

.logo-dark {
    display: none;
}

.navbar.scrolled .logo-light {
    display: none;
}

.navbar.scrolled .logo-dark {
    display: inline-block;
}

.navbar.scrolled .nav-logo {
    color: var(--text);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 22px;
}

.navbar.scrolled .logo-icon {
    background: var(--primary);
}

.logo-text {
    font-size: 22px;
}

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

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: white;
    transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
    background: var(--text);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-menu a {
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.navbar.scrolled .nav-menu a {
    color: var(--text-light);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: white;
    transition: var(--transition);
}

.navbar.scrolled .nav-menu a::after {
    background: var(--primary);
}

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

.nav-menu a:hover,
.nav-menu a.active {
    color: white;
}

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

/* ========================================
   Hero区域
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 50%, var(--primary) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-particles {
    position: absolute;
    inset: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 0 20px;
    max-width: 800px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    color: white;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-sub {
    display: block;
    font-size: 20px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
}

.hero-highlight {
    display: block;
    color: var(--primary-light);
    font-size: 42px;
    margin-top: 8px;
}

.hero-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    margin-bottom: 40px;
}

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

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    margin: 8px auto 0;
    border-right: 2px solid rgba(255, 255, 255, 0.6);
    border-bottom: 2px solid rgba(255, 255, 255, 0.6);
    transform: rotate(45deg);
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: rotate(45deg) translate(0, 0); }
    50% { transform: rotate(45deg) translate(5px, 5px); }
}

/* ========================================
   核心优势
   ======================================== */
.features {
    padding: 100px 0;
    background: var(--bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    padding: 40px 30px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    text-align: center;
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--primary);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

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

.feature-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ========================================
   产品预览
   ======================================== */
.product-preview {
    padding: 100px 0;
    background: var(--bg-light);
}

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

.product-preview-text h2 {
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.product-features-list {
    margin-bottom: 32px;
}

.product-features-list li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    color: var(--text-light);
}

.product-features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

.image-placeholder {
    background: var(--bg);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.image-placeholder.large {
    min-height: 400px;
}

.placeholder-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 16px;
    color: var(--primary-light);
}

.placeholder-icon svg {
    width: 100%;
    height: 100%;
}

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

.placeholder-note {
    color: var(--text-lighter) !important;
    font-size: 12px !important;
    margin-top: 8px;
}

/* ========================================
   数据统计
   ======================================== */
.stats {
    padding: 60px 0;
    background: var(--primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    color: white;
}

.stat-number {
    font-size: 56px;
    font-weight: 700;
    display: inline;
}

.stat-unit {
    font-size: 24px;
    font-weight: 500;
    display: inline;
    opacity: 0.8;
}

.stat-label {
    font-size: 16px;
    opacity: 0.8;
    margin-top: 8px;
}

/* ========================================
   小程序预览
   ======================================== */
.miniprogram {
    padding: 100px 0;
    background: var(--bg);
}

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

.miniprogram-phone {
    display: flex;
    justify-content: center;
}

.phone-frame {
    width: 280px;
    height: 560px;
    background: #1a1a1a;
    border-radius: 32px;
    padding: 12px;
    box-shadow: var(--shadow-lg);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #f5f5f5;
    border-radius: 24px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.phone-status-bar {
    display: flex;
    justify-content: space-between;
    padding: 8px 16px;
    font-size: 12px;
    background: white;
}

.phone-app-header {
    background: var(--primary);
    color: white;
    padding: 12px;
    text-align: center;
    font-weight: 600;
}

.phone-app-content {
    flex: 1;
    padding: 20px;
}

.phone-device-card {
    background: white;
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
    text-align: center;
    box-shadow: var(--shadow);
}

.phone-device-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.phone-device-name {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.phone-device-status {
    font-size: 12px;
    color: var(--accent);
}

.phone-controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.phone-btn {
    background: white;
    border-radius: var(--radius);
    padding: 12px;
    text-align: center;
    font-size: 12px;
    box-shadow: var(--shadow);
}

.miniprogram-text h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 16px;
}

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

.miniprogram-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.mini-check {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

/* ========================================
   CTA区域
   ======================================== */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.cta-content {
    text-align: center;
    color: white;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

/* ========================================
   页面标题
   ======================================== */
.page-header {
    padding: 160px 0 80px;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 100%);
    text-align: center;
    color: white;
}

.page-header h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.85;
}

/* ========================================
   产品详情页
   ======================================== */
.product-detail {
    padding: 80px 0;
}

.product-overview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
    margin-bottom: 80px;
}

.product-info h2 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 8px;
}

.product-tagline {
    font-size: 18px;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 20px;
}

.product-description {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 32px;
}

.product-specs {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-light);
    border-radius: var(--radius);
}

.spec-label {
    font-weight: 500;
    color: var(--text-light);
}

.spec-value {
    font-weight: 600;
    color: var(--text);
}

/* 功能特性 */
.product-features-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.feature-item {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

.feature-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-light);
    flex-shrink: 0;
    line-height: 1;
}

.feature-content h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-content p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.6;
}

/* 使用流程 */
.product-workflow {
    padding: 80px 0;
}

.workflow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
}

.workflow-step {
    flex: 1;
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.workflow-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.step-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    color: var(--primary);
}

.step-icon svg {
    width: 100%;
    height: 100%;
}

.workflow-step h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

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

.workflow-arrow {
    font-size: 32px;
    color: var(--primary);
    flex-shrink: 0;
}

/* 应用场景 */
.product-scenarios {
    padding: 80px 0;
    background: var(--bg-light);
}

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

.scenario-card {
    padding: 32px 24px;
    background: white;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.scenario-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary);
}

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

/* ========================================
   关于我们页面
   ======================================== */
.about-intro {
    padding: 80px 0;
}

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

.about-text h2 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 20px;
    margin-top: 16px;
}

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

/* 企业文化 */
.culture {
    padding: 80px 0;
    background: var(--bg-light);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.culture-card {
    padding: 40px 32px;
    background: white;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}

.culture-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.culture-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary);
}

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

/* 技术实力 */
.strength {
    padding: 80px 0;
}

.strength-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.strength-item {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

.strength-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    color: var(--primary);
}

.strength-icon svg {
    width: 100%;
    height: 100%;
}

.strength-text h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
}

.strength-text p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.6;
}

/* 发展历程 */
.timeline-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-light);
}

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

.timeline-dot {
    position: absolute;
    left: -36px;
    top: 4px;
    width: 16px;
    height: 16px;
    background: var(--primary);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 2px var(--primary);
}

.timeline-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

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

/* ========================================
   联系我们页面
   ======================================== */
.contact-info {
    padding: 80px 0;
}

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

.contact-card {
    padding: 32px 24px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    color: var(--primary);
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-card p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 4px;
}

.contact-link {
    display: inline-block;
    color: var(--primary) !important;
    font-weight: 500;
    margin-top: 8px;
}

.contact-link:hover {
    text-decoration: underline;
}

.contact-address {
    font-size: 13px !important;
    color: var(--text-lighter) !important;
}

/* 联系表单 */
.contact-form-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.form-container {
    max-width: 800px;
    margin: 0 auto;
}

.contact-form {
    background: white;
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text);
}

.required {
    color: #E24B4A;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    background: white;
}

.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(55, 138, 221, 0.1);
}

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

.btn-submit {
    width: 100%;
    padding: 16px;
    font-size: 18px;
}

.form-note {
    margin-top: 24px;
    padding: 16px;
    background: #FFF9E6;
    border-radius: var(--radius);
    border-left: 4px solid #BA7517;
}

.form-note p {
    font-size: 14px;
    color: #854F0B;
}

/* 二维码区域 */
.qrcode-section {
    padding: 80px 0;
}

.qrcode-placeholder {
    display: flex;
    justify-content: center;
}

.qrcode-box {
    text-align: center;
}

.qrcode-image {
    width: 200px;
    height: 200px;
    margin: 0 auto 16px;
    background: var(--bg-light);
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.qrcode-placeholder-text {
    width: 100%;
    height: 100%;
    color: var(--primary-light);
}

.qrcode-placeholder-text svg {
    width: 100%;
    height: 100%;
}

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

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    font-size: 20px;
    font-weight: 600;
    color: white;
}

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

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-links a:hover {
    color: white;
}

.footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-preview-content,
    .about-content,
    .miniprogram-content {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: 80px 30px 30px;
        gap: 20px;
        transition: var(--transition);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu a {
        color: var(--text) !important;
        font-size: 18px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-highlight {
        font-size: 28px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .workflow-steps {
        flex-direction: column;
    }
    
    .workflow-arrow {
        transform: rotate(90deg);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 24px;
    }
    
    .page-header h1 {
        font-size: 36px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-btns {
        flex-direction: column;
        align-items: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
    }
}