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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    position: relative;
}

/* Python代码装饰背景 */
body::before {
    content: 'print("Hello Python!") \A def learn(): \A     return "coding" \A for i in range(10): \A     print(i)';
    position: fixed;
    top: 20%;
    right: -10%;
    font-family: 'Courier New', monospace;
    font-size: 3rem;
    color: rgba(48, 116, 176, 0.03);
    white-space: pre;
    z-index: -1;
    transform: rotate(-15deg);
    pointer-events: none;
}

html {
    scroll-behavior: smooth;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    border-bottom: 2px solid rgba(255, 212, 59, 0.2);
}

.navbar.scrolled {
    background: rgba(26, 26, 46, 1);
    box-shadow: 0 2px 20px rgba(48, 116, 176, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(45deg, #3074b0, #ffd43b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(45deg, #3074b0, #ffd43b);
    transition: width 0.3s ease;
}

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

.nav-menu li a:hover {
    color: #ffd43b;
}

/* 英雄区域样式 - Python主题 */
.hero {
    height: 100vh;
    background: 
        linear-gradient(135deg, rgba(26, 35, 126, 0.9) 0%, rgba(21, 101, 192, 0.88) 50%, rgba(2, 136, 209, 0.85) 100%),
        linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.5)),
        url('img/tenweb_media_rv6wk482s.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(21, 101, 192, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(2, 136, 209, 0.3) 0%, transparent 50%);
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    padding: 0 2rem;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: white;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7), 0 0 30px rgba(255, 212, 59, 0.3);
    line-height: 1.3;
    position: relative;
}

.hero h1::before {
    content: '# ';
    color: #ffd43b;
    font-family: 'Courier New', monospace;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    font-weight: 600;
    color: #ffd43b;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

/* =====================================================
   Hero Actions — 苹果风格按钮组
   ===================================================== */
.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 44px;
}

/* 共用基础 */
.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0 26px;
    height: 50px;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: -0.1px;
    border-radius: 980px;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.22s ease, color 0.22s ease,
                box-shadow 0.22s ease, transform 0.18s ease;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    -webkit-tap-highlight-color: transparent;
}

/* 主按钮 — 实心蓝 */
.cta-btn-primary {
    background: var(--blue);
    color: #fff;
    box-shadow: 0 2px 18px rgba(0,113,227,0.38);
}
.cta-btn-primary:hover {
    background: var(--blue-dark);
    box-shadow: 0 6px 28px rgba(0,113,227,0.50);
    transform: translateY(-1px) scale(1.01);
    color: #fff;
}
.cta-btn-primary:active {
    transform: scale(0.98);
    box-shadow: 0 2px 10px rgba(0,113,227,0.3);
}

/* 次级按钮 — 半透明毛玻璃轮廓 */
.cta-btn-ghost {
    background: rgba(255,255,255,0.12);
    color: #f5f5f7;
    border: 1px solid rgba(255,255,255,0.28);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.cta-btn-ghost:hover {
    background: rgba(255,255,255,0.20);
    border-color: rgba(255,255,255,0.45);
    color: #fff;
    transform: translateY(-1px) scale(1.01);
    box-shadow: 0 4px 20px rgba(0,0,0,0.18);
}
.cta-btn-ghost:active {
    transform: scale(0.98);
    background: rgba(255,255,255,0.10);
}

/* 箭头图标 */
.cta-arrow {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    opacity: 0.7;
    transition: transform 0.2s ease, opacity 0.2s;
}
.cta-btn-ghost:hover .cta-arrow {
    transform: translateX(3px);
    opacity: 1;
}

/* 小号修饰（用于导航栏） */
.cta-btn-sm {
    height: 34px;
    padding: 0 16px;
    font-size: 0.82rem;
}
.cta-btn-sm .cta-arrow {
    width: 13px;
    height: 13px;
}

/* 导航栏 ghost 按钮 — 紫蓝渐变风格 */
.navbar .cta-btn-ghost {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    color: #fff;
    border: none;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: 0 2px 10px rgba(102,126,234,0.35);
}
.navbar .cta-btn-ghost:hover {
    background: linear-gradient(135deg, #7b8ff5 0%, #8a5cb5 100%) !important;
    color: #fff;
    border: none;
    box-shadow: 0 4px 16px rgba(102,126,234,0.50);
    transform: translateY(-1px);
}






/* 旧版兼容（导航栏登录按钮等仍用） */
.cta-button {
    display: inline-flex;
    align-items: center;
    padding: 10px 22px;
    background: var(--blue);
    color: #fff;
    text-decoration: none;
    border-radius: 980px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
    box-shadow: 0 3px 14px rgba(0,113,227,0.3);
    position: relative;
    overflow: hidden;
}
.cta-button::before { display: none; }
.cta-button:hover {
    background: var(--blue-dark);
    box-shadow: 0 6px 22px rgba(0,113,227,0.45);
    transform: translateY(-1px);
}

.cta-button-small {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--blue);
    text-decoration: none;
    background: transparent;
    border: 1.5px solid var(--blue);
    border-radius: 980px;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    box-shadow: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}
.cta-button-small::before { display: none; }
.cta-button-small:hover {
    background: var(--blue);
    color: #fff;
    box-shadow: 0 2px 12px rgba(0,113,227,0.25);
    transform: none;
}

/* 通用区域样式 */
.section {
    padding: 5rem 0;
}

.section.dark {
    background: linear-gradient(180deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    position: relative;
}

.section.dark::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(48, 116, 176, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(255, 212, 59, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.section.light {
    background: #f8f9fa;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    font-weight: 700;
}

.section.dark .section-title {
    background: linear-gradient(45deg, #ffffff, #ffd43b, #3074b0);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 4s ease-in-out infinite;
    text-shadow: 0 0 30px rgba(255, 212, 59, 0.3);
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    margin-bottom: 3rem;
    opacity: 0.8;
}

/* 产品价值样式 */
.value-problems {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.problem-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.problem-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(48, 116, 176, 0.4);
}

.problem-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(45deg, #3074b0, #ffd43b);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    flex-shrink: 0;
}

.problem-content {
    flex: 1;
}

.problem-content h3 {
    color: white;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.problem-content p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin: 0;
}

.problem-icon {
    font-size: 2rem;
    flex-shrink: 0;
    opacity: 0.8;
}

/* 解决方案样式 */
.value-solutions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.solution-item {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 15px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 255, 136, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.solution-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.solution-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(45deg, #00ff88, #00cc66);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    flex-shrink: 0;
}

.solution-content {
    flex: 1;
}

.solution-content h3 {
    color: white;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.solution-content p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin: 0;
}

.solution-icon {
    font-size: 2rem;
    flex-shrink: 0;
    opacity: 0.8;
}

/* PDCA理论样式 */
.theory-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-top: 3rem;
}

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

.pdca-diagram {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.pdca-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.pdca-step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pdca-step:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.step-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    flex-shrink: 0;
}

.step-icon.plan {
    background: linear-gradient(45deg, #007bff, #0056b3);
}

.step-icon.do {
    background: linear-gradient(45deg, #28a745, #1e7e34);
}

.step-icon.check {
    background: linear-gradient(45deg, #ffc107, #e0a800);
}

.step-icon.act {
    background: linear-gradient(45deg, #dc3545, #c82333);
}

.step-content h4 {
    margin-bottom: 0.5rem;
    color: #333;
    font-size: 1.1rem;
}

.step-content p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* 功能区域样式 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    text-align: left;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(48, 116, 176, 0.4);
    border-color: rgba(255, 212, 59, 0.4);
}

.feature-card .text-content {
    flex: 1;
}

.image-container {
    margin-bottom: 0;
    position: relative;
    width: 810px;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-image {
    width: 810px;
    height: 600px;
    object-fit: fill;
    border-radius: 10px;
}

.feature-icon {
    font-size: 4rem;
    color: #ffd43b;
    display: none;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: white;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

/* 工作流程样式 */
.workflow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.workflow-step {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.workflow-step:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 123, 255, 0.2);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: linear-gradient(45deg, #007bff, #00d4ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
    font-size: 1.2rem;
}

.workflow-step h3 {
    margin: 1.5rem 0 1rem;
    color: #333;
    font-size: 1.3rem;
}

.workflow-step p {
    color: #666;
    line-height: 1.6;
}

/* 定价方案样式 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

@media (max-width: 1200px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

.pricing-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.pricing-card.recommended {
    border: 2px solid #ffd43b;
    transform: scale(1.05);
}

.pricing-card.recommended::before {
    content: '推荐';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(45deg, #3074b0, #ffd43b);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(48, 116, 176, 0.4);
}

.pricing-card.recommended:hover {
    transform: translateY(-10px) scale(1.05);
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: white;
}

.price {
    font-size: 3rem;
    font-weight: bold;
    color: #ffd43b;
    margin-bottom: 0.5rem;
}

.price-period {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 2rem;
}

.features-list {
    list-style: none;
    margin-bottom: 2rem;
}

.features-list li {
    color: rgba(255, 255, 255, 0.8);
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.features-list li:last-child {
    border-bottom: none;
}

.pricing-button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(45deg, #3074b0, #4b8bbf);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pricing-button.secondary {
    background: transparent;
    border: 2px solid #ffd43b;
    color: #ffd43b;
}

.pricing-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(48, 116, 176, 0.5);
    background: linear-gradient(45deg, #4b8bbf, #3074b0);
}

/* 客户案例样式 */
.case-card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    display: block;
    text-align: center;
}

.case-header {
    text-align: center;
    margin-bottom: 1rem;
}

.case-header h3 {
    color: white;
    margin-bottom: 0.5rem;
}

.case-header p {
    color: #ffd43b;
    font-weight: bold;
}

/* 客户评价样式 */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.testimonial-content {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
    background: linear-gradient(45deg, #007bff, #00d4ff);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    color: #333;
    margin-bottom: 0.25rem;
}

.author-info p {
    color: #666;
    font-size: 0.9rem;
}

/* 联系我们样式 */
.contact-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    align-items: flex-start;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-info {
    flex: 1;
    min-width: 300px;
    font-size: 1.0rem;
}

.wechat-contact {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.wechat-qrcode {
    width: 200px;
    height: 200px;
    margin: 1rem auto;
    display: block;
    border: 5px solid white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.wechat-placeholder {
    width: 200px;
    height: 200px;
    margin: 1rem auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 5px dashed #ffd43b;
    border-radius: 10px;
    background-color: rgba(255, 212, 59, 0.1);
}

.placeholder-text {
    font-size: 1.2rem;
    font-weight: bold;
    color: #ffd43b;
    margin-bottom: 0.5rem;
}

.placeholder-subtext {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
}

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
    text-align: center;
    padding: 2rem 0;
    font-size: 0.8rem;
}
    border-top: 2px solid rgba(255, 212, 59, 0.2);
}

/* 表格悬停效果 */
table tbody tr {
    cursor: pointer;
}

table tbody tr:hover {
    background: rgba(48, 116, 176, 0.1) !important;
    transform: scale(1.02);
    box-shadow: 0 2px 8px rgba(48, 116, 176, 0.2);
}

/* Python代码样式装饰 */
.section-title::before {
    content: '>>> ';
    font-family: 'Courier New', monospace;
    color: rgba(255, 212, 59, 0.6);
    font-size: 0.8em;
}

/* 添加代码块样式 */
code, pre {
    font-family: 'Courier New', Consolas, monospace;
    background: rgba(48, 116, 176, 0.1);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    color: #3074b0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .theory-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .pdca-diagram {
        max-width: 300px;
    }
    
    .pdca-step {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .step-icon {
        margin: 0 auto;
    }
    
    .value-problems,
    .value-solutions {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .problem-item,
    .solution-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .problem-content h3,
    .solution-content h3 {
        font-size: 1.1rem;
    }
    
    .feature-card,
    .workflow-step,
    .pricing-card,
    .testimonial-card {
        padding: 1.5rem;
    }
    
    .cta-button {
        padding: 1rem 2rem;
    }
}