/* 罗鹏飞程式肿瘤诊疗法网站样式 */

/* ==================== 变量定义 ==================== */
:root {
    --primary-color: #0066cc;
    --primary-dark: #004c99;
    --primary-light: #e6f0fa;
    --secondary-color: #2a9d8f;
    --accent-color: #e76f51;
    --text-dark: #333333;
    --text-light: #666666;
    --text-lightest: #999999;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --border-radius-lg: 16px;
}

/* ==================== 重置样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-dark);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 顶部导航 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.98);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

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

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

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 1px;
}

.logo-subtitle {
    font-size: 11px;
    color: var(--text-lightest);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    color: var(--text-dark);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--border-radius);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 20px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-dark);
}

/* ==================== 幻灯片轮播 ==================== */
.hero-slider {
    position: relative;
    height: 600px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: all 0.6s ease;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,51,102,0.85) 0%, rgba(0,102,204,0.7) 100%);
}

.slide-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 0 20px;
    color: white;
}

.slide-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.slide.active .slide-title {
    opacity: 1;
}

.slide-subtitle {
    font-size: 22px;
    margin-bottom: 30px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.slide.active .slide-subtitle {
    opacity: 0.95;
}

.slide-tag {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 14px;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.1s forwards;
    opacity: 0;
}

.slide.active .slide-tag {
    opacity: 1;
}

.slide-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: white;
    color: var(--primary-color);
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    margin-top: 20px;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.slide.active .slide-cta {
    opacity: 1;
}

.slide-cta:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(231,111,81,0.4);
}

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

/* 幻灯片导航 */
.slider-nav {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.slider-dot.active,
.slider-dot:hover {
    background: white;
    transform: scale(1.2);
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.15);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 20px;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-arrow:hover {
    background: rgba(255,255,255,0.3);
}

.slider-arrow.prev { left: 20px; }
.slider-arrow.next { right: 20px; }

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

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

.section-title {
    font-size: 36px;
    color: var(--text-dark);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 20px auto 0;
}

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

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

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

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.about-image::after {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: var(--border-radius);
    pointer-events: none;
}

.about-content h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-content p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 5px;
}

/* ==================== 五步程式 ==================== */
.steps-section {
    background: white;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    position: relative;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 60px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.step-item {
    text-align: center;
    position: relative;
    padding: 20px;
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    font-weight: 700;
    position: relative;
    z-index: 2;
    box-shadow: 0 4px 15px rgba(0,102,204,0.3);
}

.step-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.step-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ==================== 适应症 ==================== */
.indications-section {
    background: var(--primary-light);
}

.indications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.indication-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.indication-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

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

.indication-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}

.indication-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.indication-desc {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
}

.advantages-section {
    background: white;
    padding-top: 0;
}

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

.advantage-item {
    text-align: center;
    padding: 30px 20px;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--secondary-color), #21867a);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: white;
}

.advantage-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

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

/* ==================== 典型案例 ==================== */
.cases-section {
    background: var(--bg-light);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.case-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 48px;
}

.case-content {
    padding: 25px;
}

.case-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 12px;
}

.case-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.case-info {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 15px;
}

.case-result {
    padding: 15px;
    background: var(--primary-light);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--primary-color);
}

.case-result-label {
    font-size: 12px;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 5px;
}

.case-result-text {
    font-size: 14px;
    color: var(--text-dark);
}

/* ==================== 科研荣誉 ==================== */
.honors-section {
    background: white;
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.honor-card {
    display: flex;
    gap: 25px;
    padding: 30px;
    background: var(--bg-light);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.honor-card:hover {
    background: white;
    box-shadow: var(--shadow-md);
}

.honor-icon {
    width: 80px;
    height: 80px;
    min-width: 80px;
    background: linear-gradient(135deg, #d4af37, #f4d03f);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: white;
}

.honor-content {
    flex: 1;
}

.honor-year {
    font-size: 14px;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.honor-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.honor-desc {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ==================== 就医指南 ==================== */
.guide-section {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: white;
    position: relative;
    overflow: hidden;
}

.guide-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.guide-section .section-title,
.guide-section .section-subtitle {
    color: white;
}

.guide-section .section-title::after {
    background: white;
}

.guide-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    position: relative;
    z-index: 2;
}

.guide-content h3 {
    color: white;
    font-size: 24px;
    margin-bottom: 20px;
}

.guide-content p {
    opacity: 0.9;
    margin-bottom: 30px;
    line-height: 1.8;
}

.guide-steps {
    list-style: none;
}

.guide-steps li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.step-number {
    width: 30px;
    height: 30px;
    min-width: 30px;
    background: white;
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.step-text {
    font-size: 16px;
    line-height: 1.6;
}

.contact-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 40px;
    color: var(--text-dark);
}

.contact-card h3 {
    color: var(--text-dark);
    font-size: 24px;
    margin-bottom: 25px;
    text-align: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-icon {
    width: 45px;
    height: 45px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary-color);
}

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

.contact-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
}

/* ==================== 留言表单 ==================== */
.feedback-section {
    background: var(--bg-light);
}

.feedback-form {
    max-width: 700px;
    margin: 0 auto;
    background: white;
    padding: 50px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.form-title {
    font-size: 24px;
    text-align: center;
    margin-bottom: 10px;
}

.form-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-label .required {
    color: var(--accent-color);
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 15px;
    transition: var(--transition);
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-control::placeholder {
    color: var(--text-lightest);
}

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

.form-file {
    display: block;
    width: 100%;
    padding: 12px;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.form-file:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.form-file input {
    display: none;
}

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

.form-submit {
    display: block;
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 20px;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,102,204,0.4);
}

.form-success {
    display: none;
    text-align: center;
    padding: 40px;
}

.form-success.show {
    display: block;
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: #28a745;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: white;
}

.success-title {
    font-size: 24px;
    margin-bottom: 10px;
}

.success-text {
    color: var(--text-light);
}

/* ==================== 页脚 ==================== */
.footer {
    background: #1a1a2e;
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    color: white;
    font-size: 24px;
    margin-bottom: 15px;
}

.footer-brand p {
    opacity: 0.8;
    line-height: 1.8;
    font-size: 14px;
}

.footer-column h4 {
    color: white;
    font-size: 16px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary-color);
}

.footer-links li {
    margin-bottom: 12px;
}

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

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    font-size: 14px;
    opacity: 0.7;
}

/* ==================== 响应式设计 ==================== */

/* 平板横屏 (1024px) */
@media (max-width: 1024px) {
    .steps-container {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .steps-container::before {
        display: none;
    }
    
    .indications-grid,
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .slider-wrapper {
        padding: 0 30px;
    }
}

/* 平板竖屏 & 大屏手机 (768px) */
@media (max-width: 768px) {
    .header-inner {
        height: auto;
        min-height: 60px;
        flex-wrap: wrap;
        padding: 10px 0;
    }
    
    .logo {
        flex-shrink: 1;
        min-width: 0;
    }
    
    .logo-text {
        font-size: 16px;
        letter-spacing: 0;
    }
    
    .logo-subtitle {
        font-size: 9px;
        letter-spacing: 1px;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 10px 20px;
        box-shadow: var(--shadow-md);
        z-index: 999;
        gap: 0;
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav-link {
        padding: 12px 15px;
        font-size: 15px;
        border-bottom: 1px solid var(--border-color);
        border-radius: 0;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .nav-link:hover,
    .nav-link.active {
        background: var(--primary-light);
    }
    
    .nav-link::after {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        border-radius: 8px;
        background: var(--bg-light);
        font-size: 22px;
        cursor: pointer;
        color: var(--primary-color);
        flex-shrink: 0;
        -webkit-tap-highlight-color: transparent;
    }
    
    .hero-slider {
        height: 500px;
    }
    
    .slide-title {
        font-size: 32px;
    }
    
    .slide-subtitle {
        font-size: 16px;
    }
    
    .slide-tag {
        font-size: 12px;
        padding: 6px 14px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-header {
        margin-bottom: 30px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .section-subtitle {
        font-size: 14px;
    }
    
    .about-grid,
    .guide-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-image {
        order: -1;
    }
    
    .about-content h3 {
        font-size: 22px;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .steps-container,
    .indications-grid,
    .advantages-grid,
    .cases-grid,
    .honors-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .feedback-form {
        padding: 25px 20px;
    }
    
    .contact-card {
        padding: 25px 20px;
    }
    
    .guide-card {
        padding: 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer {
        padding: 40px 0 20px;
    }
    
    .slide-cta {
        padding: 12px 28px;
        font-size: 14px;
    }
    
    .slider-arrow {
        display: none;
    }
    
    /* 移动端轮播指示器放大 */
    .slider-dot {
        width: 10px;
        height: 10px;
    }
    
    /* 表单控件触摸友好 */
    input, textarea, select, button {
        font-size: 16px !important;
    }
    
    /* 步骤样式适配 */
    .step-icon {
        width: 70px;
        height: 70px;
        font-size: 24px;
    }
    
    /* 案例卡片 */
    .case-card {
        padding: 20px;
    }
    
    /* 荣誉卡片 */
    .honor-card {
        padding: 20px;
    }
}

/* 手机 (480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .logo-text {
        font-size: 14px;
    }
    
    .logo-subtitle {
        font-size: 8px;
    }
    
    .hero-slider {
        height: 450px;
        min-height: 350px;
    }
    
    .slider-wrapper {
        padding: 0 15px;
    }
    
    .slide-content {
        padding: 15px !important;
    }
    
    .slide-title {
        font-size: 24px;
    }
    
    .slide-subtitle {
        font-size: 14px;
        line-height: 1.5;
    }
    
    .slide-tag {
        font-size: 11px;
        padding: 4px 10px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    .section-subtitle {
        font-size: 13px;
    }
    
    .slider-arrow {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .stat-label {
        font-size: 13px;
    }
    
    .step-icon {
        width: 56px;
        height: 56px;
        font-size: 20px;
    }
    
    .step-title {
        font-size: 15px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .feedback-form {
        padding: 20px 15px;
    }
    
    .contact-card {
        padding: 20px 15px;
    }
    
    .form-control {
        padding: 12px 14px;
    }
    
    .form-submit {
        padding: 14px;
        font-size: 15px;
    }
    
    .footer-bottom p {
        font-size: 12px;
    }
    
    /* 导航链接点击区域加大 */
    .nav-link {
        padding: 14px 15px;
        font-size: 16px;
    }
    
    /* 头部固定时给 body 加 padding */
    body {
        padding-top: 0;
    }
}

/* 超小屏 (360px) */
@media (max-width: 360px) {
    .slide-title {
        font-size: 20px;
    }
    
    .slide-subtitle {
        font-size: 13px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .logo-text {
        font-size: 13px;
    }
}