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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #00d4ff;
    font-weight: 700;
    font-size: 1.5rem;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.nav-logo h2::after {
    content: " | OD算法";
    font-size: 0.8rem;
    color: #64748b;
    font-weight: 400;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #00d4ff;
    text-shadow: 0 0 5px rgba(0, 212, 255, 0.5);
}

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

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #06b6d4 100%);
    position: relative;
    overflow: hidden;
    color: white;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(0, 212, 255, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 40% 60%, rgba(0, 212, 255, 0.03) 0%, transparent 40%);
    animation: backgroundFlow 20s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(90deg, transparent 0%, rgba(0, 212, 255, 0.01) 50%, transparent 100%),
        linear-gradient(0deg, transparent 0%, rgba(0, 212, 255, 0.01) 50%, transparent 100%);
    background-size: 100px 100px;
    animation: gridMove 30s linear infinite;
}

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

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 100px); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.8;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #00d4ff, #00a8cc);
    color: #0a0a0a;
    font-weight: 600;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #00f0ff, #00d4ff);
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
    color: #0a0a0a;
}

.btn-secondary {
    background: transparent;
    color: #2c3e50;
    border: 2px solid #2c3e50;
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    color: #00d4ff;
    border-color: #00d4ff;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.btn-outline {
    background: transparent;
    color: #2c3e50;
    border: 1px solid rgba(44, 62, 80, 0.6);
}

.btn-outline:hover {
    background: rgba(44, 62, 80, 0.1);
    border-color: #2c3e50;
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.1rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-placeholder {
    width: 500px;
    height: 400px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 168, 204, 0.1));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(0, 212, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.hero-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        linear-gradient(45deg, transparent 40%, rgba(0, 212, 255, 0.1) 50%, transparent 60%),
        radial-gradient(circle at 30% 30%, rgba(0, 212, 255, 0.2) 0%, transparent 30%),
        radial-gradient(circle at 70% 70%, rgba(0, 212, 255, 0.15) 0%, transparent 25%);
    animation: float 6s ease-in-out infinite;
}

.hero-placeholder::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 98px,
            rgba(0, 212, 255, 0.03) 100px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 98px,
            rgba(0, 212, 255, 0.03) 100px
        );
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(-10px, -10px) rotate(1deg); }
    66% { transform: translate(10px, -5px) rotate(-1deg); }
}

.code-animation {
    width: 300px;
    height: 200px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 20px;
    position: relative;
    z-index: 2;
}

.code-line {
    height: 6px;
    background: linear-gradient(90deg, #00d4ff, #00a8cc, #00d4ff);
    background-size: 200% 100%;
    border-radius: 3px;
    animation: codeFlow 3s ease-in-out infinite, glow 2s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.code-line:nth-child(1) {
    width: 85%;
    animation-delay: 0s;
}

.code-line:nth-child(2) {
    width: 65%;
    animation-delay: 0.7s;
}

.code-line:nth-child(3) {
    width: 95%;
    animation-delay: 1.4s;
}

.code-line:nth-child(4) {
    width: 75%;
    animation-delay: 2.1s;
}

.code-line:nth-child(5) {
    width: 80%;
    animation-delay: 2.8s;
}

@keyframes codeFlow {
    0%, 100% { 
        background-position: 0% 0%;
        opacity: 0.7;
    }
    50% { 
        background-position: 100% 0%;
        opacity: 1;
    }
}

@keyframes glow {
    0%, 100% { 
        box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
    }
    50% { 
        box-shadow: 0 0 20px rgba(0, 212, 255, 0.8), 0 0 30px rgba(0, 212, 255, 0.3);
    }
}

/* 区域标题 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.section-header p {
    font-size: 1.2rem;
    color: #666;
}

.core-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.core-value {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    border-left: 5px solid #00d4ff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.core-value h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.core-value p {
    color: #64748b;
    margin: 0;
    line-height: 1.6;
}

/* OJ刷题平台 */
.oj-platform {
    padding: 80px 0;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.oj-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.stat-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 3px solid transparent;
    transition: all 0.3s ease;
    color: #2c3e50;
}

.stat-card:hover {
    border-color: #00d4ff;
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.2);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #00d4ff;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.stat-label {
    font-size: 1.1rem;
    color: #64748b;
    font-weight: 500;
}

.oj-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.oj-feature {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    color: #2c3e50;
}

.oj-feature .feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.oj-feature h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.oj-feature p {
    color: #666;
    line-height: 1.6;
}

.oj-cta {
    text-align: center;
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 2px solid rgba(0, 212, 255, 0.3);
    color: #2c3e50;
}

.oj-cta h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.oj-note {
    margin-top: 1rem;
    color: #64748b;
    font-size: 0.9rem;
}

/* 特色功能 */
.features {
    padding: 80px 0;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: #2c3e50;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
    border-color: #00d4ff;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* 课程内容 */
.courses {
    padding: 80px 0;
    background: linear-gradient(135deg, #ffffff, #f1f5f9);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.course-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    border-left: 5px solid #00d4ff;
    border: 1px solid rgba(0, 212, 255, 0.2);
    color: #2c3e50;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.course-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #00d4ff;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.course-card ul {
    list-style: none;
}

.course-card li {
    padding: 0.5rem 0;
    color: #555;
    position: relative;
    padding-left: 1.5rem;
}

.course-card li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #00d4ff;
    font-weight: bold;
    text-shadow: 0 0 5px rgba(0, 212, 255, 0.5);
}

/* 学员案例 */
.student-cases {
    padding: 80px 0;
    background: linear-gradient(135deg, #ffffff, #f1f5f9);
}

.success-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    border-radius: 15px;
    border: 2px solid rgba(0, 212, 255, 0.2);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: #00d4ff;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.stat-item .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #00d4ff;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.stat-item .stat-label {
    color: #64748b;
    font-weight: 500;
}

.offers-showcase {
    margin-bottom: 4rem;
}

.offers-showcase h3 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 2rem;
    font-size: 1.6rem;
}

.offers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.offer-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all 0.3s ease;
}

.offer-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.offer-image {
    height: 180px;
    overflow: hidden;
    position: relative;
}

.offer-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e0f2fe, #bae6fd);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #0369a1;
}

.offer-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.offer-placeholder p {
    font-weight: 600;
    margin: 0;
}

.offer-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.offer-info {
    padding: 1.5rem;
}

.offer-info h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.position {
    color: #00d4ff;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.salary {
    color: #ef4444;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.background {
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.study-time {
    background: linear-gradient(135deg, #dcfce7, #bbf7d0);
    color: #166534;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
}

.more-offers {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    border: 2px dashed rgba(0, 212, 255, 0.3);
}

.more-content {
    text-align: center;
}

.more-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.more-content h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.more-content p {
    color: #64748b;
    margin-bottom: 1rem;
}

.success-stories h3 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 2rem;
    font-size: 1.6rem;
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.story-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    border-left: 5px solid #00d4ff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.story-quote {
    font-style: italic;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.story-author {
    color: #64748b;
    font-size: 0.9rem;
}

/* 学员反馈 */
.testimonials {
    padding: 80px 0;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    color: #2c3e50;
}

.testimonial-content p {
    font-style: italic;
    color: #555;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

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

.author-info h4 {
    font-weight: 600;
    color: #2c3e50;
}

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

/* 试听内容 */
.demo-videos {
    padding: 80px 0;
    background: linear-gradient(135deg, #e2e8f0, #f1f5f9);
}

.video-intro {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 3rem;
    border-left: 5px solid #00d4ff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.intro-text h3 {
    color: #00d4ff;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.intro-text ul {
    list-style: none;
    padding: 0;
}

.intro-text li {
    margin: 0.8rem 0;
    color: #2c3e50;
    font-size: 1.1rem;
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.video-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.video-thumbnail iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 10px;
}

.video-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1;
}

/* 当有iframe时隐藏占位符 */
.video-thumbnail:has(iframe) .video-placeholder {
    display: none;
}

.video-placeholder:hover {
    background: linear-gradient(135deg, #1e40af, #2563eb);
}

.play-icon {
    font-size: 3rem;
    color: #2c3e50;
    text-shadow: 0 0 20px rgba(44, 62, 80, 0.5);
    transition: transform 0.3s ease;
}

.video-placeholder:hover .play-icon {
    transform: scale(1.1);
}

.video-overlay {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(255, 255, 255, 0.9);
    color: #2c3e50;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.video-info {
    padding: 1.5rem;
}

.video-info h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.video-info p {
    color: #64748b;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.video-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: linear-gradient(135deg, #e0f2fe, #bae6fd);
    color: #0369a1;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(3, 105, 161, 0.2);
}

.video-cta {
    text-align: center;
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 3rem;
    border-radius: 20px;
    border: 2px solid rgba(0, 212, 255, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.video-cta h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.6rem;
}

.video-cta p {
    color: #64748b;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 面向人群 */
.target-audience {
    padding: 80px 0;
    background: linear-gradient(135deg, #ffffff, #f1f5f9);
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.audience-card {
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    color: #2c3e50;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.audience-card:hover {
    border-color: #00d4ff;
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.2);
}

.audience-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.audience-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.audience-card p {
    color: #666;
    line-height: 1.6;
}

/* 能获得什么 */
.benefits {
    padding: 80px 0;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.benefit-item {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: transform 0.3s ease;
    color: #2c3e50;
}

.benefit-item:hover {
    transform: translateY(-5px);
}

.benefit-number {
    background: linear-gradient(135deg, #00d4ff, #00a8cc);
    color: #0a0a0a;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    flex-shrink: 0;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}

.benefit-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.benefit-item p {
    color: #666;
    line-height: 1.6;
}

/* 课程价格 */
.pricing {
    padding: 80px 0;
    background: linear-gradient(135deg, #e2e8f0, #f1f5f9);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
    max-width: 1000px;
    margin: 0 auto 3rem auto;
}

.pricing-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.pricing-card.featured {
    border-color: #00d4ff;
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #ff6b6b, #ffa500);
    color: #2c3e50;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-header h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.price {
    margin-bottom: 1rem;
    position: relative;
}

.currency {
    font-size: 1.2rem;
    color: #64748b;
    vertical-align: top;
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: #00d4ff;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.original-price {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    color: #94a3b8;
    text-decoration: line-through;
    font-size: 1rem;
}

.price-desc {
    color: #64748b;
    margin-bottom: 2rem;
}

.pricing-features ul {
    list-style: none;
    text-align: left;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    color: #2c3e50;
    border-bottom: 1px solid #f1f5f9;
}

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

.pricing-note {
    text-align: center;
    background: linear-gradient(135deg, #fef3c7, #fed7aa);
    padding: 1rem 2rem;
    border-radius: 10px;
    border-left: 4px solid #f59e0b;
}

.pricing-note p {
    margin: 0;
    color: #92400e;
    font-weight: 500;
}

.value-card {
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0) !important;
    border: 2px solid #00d4ff;
}

.value-points {
    text-align: left;
    margin-top: 1rem;
}

.value-point {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(0, 212, 255, 0.05);
    border-radius: 8px;
    border-left: 3px solid #00d4ff;
}

.value-point h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
}

.value-point p {
    color: #64748b;
    margin: 0;
    font-size: 0.9rem;
}

/* 学习路径 */
.learning-path {
    padding: 80px 0;
    background: linear-gradient(135deg, #ffffff, #f1f5f9);
}

.path-timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.path-item {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border-left: 5px solid #00d4ff;
    transition: transform 0.3s ease;
}

.path-item:hover {
    transform: translateX(10px);
}

.path-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #00d4ff, #00a8cc);
    color: #2c3e50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
}

.path-content h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.path-content p {
    color: #64748b;
    margin-bottom: 0.5rem;
}

.path-duration {
    background: linear-gradient(135deg, #e0f2fe, #bae6fd);
    color: #0369a1;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
}

/* 联系我们 */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, #ffffff, #f1f5f9);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.contact-item p {
    color: #666;
    font-size: 1.1rem;
}

.qr-placeholder {
    margin-top: 1rem;
    padding: 1rem;
    background: #f1f5f9;
    border-radius: 8px;
    text-align: center;
    border: 2px dashed #cbd5e1;
}

.qr-placeholder p {
    color: #64748b;
    font-size: 0.9rem;
    margin: 0;
}

.live-schedule {
    margin-top: 1rem;
    padding: 0.8rem;
    background: linear-gradient(135deg, #fee2e2, #fef3c7);
    border-radius: 8px;
    border-left: 4px solid #f59e0b;
}

.live-schedule p {
    margin: 0;
    font-size: 0.9rem;
    color: #92400e;
}

/* 优惠码相关样式 */
.coupon-result {
    margin-top: 2rem;
    animation: slideIn 0.5s ease-out;
}

.coupon-card {
    background: linear-gradient(135deg, #00d4ff, #00a8cc);
    color: #0a0a0a;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
    position: relative;
    overflow: hidden;
}

.coupon-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(30deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(30deg); }
}

.coupon-header h3 {
    margin: 0 0 1rem 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.coupon-code {
    background: rgba(0, 0, 0, 0.1);
    padding: 1rem;
    border-radius: 10px;
    margin: 1rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.code-label {
    font-weight: 600;
}

.code-value {
    font-family: 'Courier New', monospace;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 2px;
    background: rgba(255, 255, 255, 0.2);
    padding: 5px 10px;
    border-radius: 5px;
    flex: 1;
    min-width: 150px;
}

.copy-btn {
    background: #0a0a0a;
    color: #00d4ff;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: #1a1a1a;
    transform: scale(1.05);
}

.coupon-info {
    text-align: left;
    margin: 1rem 0;
}

.coupon-info p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

.next-steps {
    background: rgba(0, 0, 0, 0.1);
    padding: 1rem;
    border-radius: 10px;
    text-align: left;
}

.next-steps h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
}

.next-steps p {
    margin: 0.3rem 0;
    font-size: 0.9rem;
}

.btn-submit {
    position: relative;
    overflow: hidden;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-loading {
    position: absolute;
}

.form-note {
    text-align: center;
    margin-top: 1rem;
}

.form-note p {
    margin: 0.3rem 0;
    color: #888;
}

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

.contact-form {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 2rem;
    border-radius: 20px;
    border: 2px solid rgba(0, 212, 255, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.form-container {
    max-width: 500px;
    margin: 0 auto;
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h3 {
    color: #00d4ff;
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.form-header p {
    color: #e0e0e0;
    margin: 0;
}

.highlight {
    color: #00d4ff;
    font-weight: 600;
    text-shadow: 0 0 5px rgba(0, 212, 255, 0.5);
}

.lead-form {
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 15px;
    border: 2px solid rgba(0, 212, 255, 0.2);
    border-radius: 10px;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.9);
    color: #2c3e50;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #64748b;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00d4ff;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
    background: rgba(255, 255, 255, 1);
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ecf0f1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #00d4ff;
    text-shadow: 0 0 5px rgba(0, 212, 255, 0.5);
}

.footer-social {
    margin-top: 1rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-link {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    color: #ecf0f1 !important;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    color: white !important;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-placeholder {
        width: 300px;
        height: 200px;
    }

    .features-grid,
    .courses-grid,
    .testimonials-grid,
    .audience-grid,
    .benefits-grid,
    .pricing-grid,
    .offers-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .path-timeline {
        padding: 0 1rem;
    }
    
    .path-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .path-item:hover {
        transform: translateY(-5px);
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .section-header h2 {
        font-size: 2rem;
    }
}

@media screen and (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .feature-card,
    .course-card,
    .testimonial-card {
        padding: 1.5rem;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 加载动画 */
.fade-in {
    animation: fadeIn 0.6s ease-in;
}

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

/* 华为OD全面解析模块样式 */
.huawei-od-guide {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.od-overview {
    margin-bottom: 50px;
}

.od-intro {
    text-align: center;
    margin-bottom: 40px;
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.od-intro h3 {
    color: #1e40af;
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.od-intro p {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.8;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.advantage-item {
    background: white;
    padding: 25px 20px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.15);
}

.advantage-icon {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.advantage-item h4 {
    color: #1e40af;
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.advantage-item p {
    color: #64748b;
    font-size: 0.95rem;
}

.interview-process {
    margin-bottom: 50px;
    background: white;
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.interview-process h3 {
    text-align: center;
    color: #1e40af;
    font-size: 1.8rem;
    margin-bottom: 35px;
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.process-step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #00d4ff, #0891b2);
    color: #2c3e50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.1rem;
    margin: 0 auto 15px;
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
}

.step-content h4 {
    color: #1e40af;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.step-content p {
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.5;
}

.preparation-strategy {
    margin-bottom: 50px;
}

.preparation-strategy h3 {
    text-align: center;
    color: #1e40af;
    font-size: 1.8rem;
    margin-bottom: 35px;
}

.strategy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.strategy-card {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #00d4ff;
}

.strategy-card h4 {
    color: #1e40af;
    font-size: 1.2rem;
    margin-bottom: 18px;
}

.strategy-card ul {
    list-style: none;
    padding: 0;
}

.strategy-card li {
    color: #64748b;
    margin-bottom: 10px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.success-tips {
    background: white;
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.success-tips h3 {
    text-align: center;
    color: #1e40af;
    font-size: 1.8rem;
    margin-bottom: 30px;
}

.tips-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.tip-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 10px;
    border-left: 4px solid #00d4ff;
}

.tip-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tip-item p {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.tip-item strong {
    color: #1e40af;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .process-timeline {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid,
    .strategy-grid,
    .tips-container {
        grid-template-columns: 1fr;
    }
    
    .od-intro,
    .interview-process,
    .success-tips {
        padding: 20px;
    }
}

/* 底部快速链接优化 */
.footer-links {
    display: flex;
    gap: 30px;
}

.links-column {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.links-column a {
    color: #64748b;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.links-column a:hover {
    color: #00d4ff;
}

@media (max-width: 768px) {
    .footer-links {
        flex-direction: column;
        gap: 15px;
    }
}

/* 4周学习路径网格样式 */
.path-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

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

.path-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.2);
    border-color: #00d4ff;
}

.path-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: block;
}

.path-card h3 {
    color: #1e40af;
    font-size: 1.3rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.path-card > p {
    color: #64748b;
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.path-detail {
    border-top: 1px solid #e2e8f0;
    padding-top: 20px;
}

.path-detail p {
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 8px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .path-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .path-card {
        padding: 25px;
    }
}

/* 正规vs其他对比样式 */
.comparison {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.comparison-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 50px;
}

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

.comparison-card:hover {
    transform: translateY(-5px);
}

.comparison-card.recommended {
    border: 3px solid #00d4ff;
    position: relative;
}

.comparison-card.recommended:hover {
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.2);
}

.card-header {
    text-align: center;
    margin-bottom: 30px;
}

.card-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.comparison-card.recommended .card-badge {
    background: linear-gradient(135deg, #00d4ff, #0891b2);
    color: white;
}

.card-badge.warning {
    background: linear-gradient(135deg, #ff9800, #f57c00);
    color: white;
}

.card-header h3 {
    color: #1e40af;
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.card-subtitle {
    color: #64748b;
    font-size: 1rem;
    margin: 0;
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px;
    background: #f8fafc;
    border-radius: 10px;
    border-left: 4px solid #00d4ff;
}

.comparison-card:not(.recommended) .feature-item {
    border-left-color: #ff9800;
}

.feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-text h4 {
    color: #1e40af;
    font-size: 1.1rem;
    margin: 0 0 5px 0;
}

.feature-text p {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.comparison-footer {
    margin-top: 50px;
    text-align: center;
}

.footer-highlight {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.footer-highlight h3 {
    color: #1e40af;
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.footer-highlight p {
    color: #64748b;
    font-size: 1.1rem;
    margin-bottom: 25px;
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .comparison-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .comparison-card {
        padding: 25px;
    }
    
    .footer-highlight {
        padding: 30px 20px;
    }
    
    .footer-highlight h3 {
        font-size: 1.5rem;
    }
}

/* 1对1语音沟通提醒样式 */
.consultation-notice {
    background: linear-gradient(135deg, #00d4ff, #0891b2);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.consultation-notice h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.consultation-notice p {
    color: white;
    font-size: 1.1rem;
    margin: 0 0 15px 0;
}

.voice-contact-btn {
    margin-top: 10px;
    background: linear-gradient(135deg, #00d4ff, #0099cc);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.voice-contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
    background: linear-gradient(135deg, #0099cc, #0077aa);
}

/* 价格套餐新样式 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    min-height: auto;
}

.pricing-card.premium {
    border: 3px solid #ffd700;
    position: relative;
}

.pricing-card.premium:hover {
    box-shadow: 0 15px 40px rgba(255, 215, 0, 0.2);
}

.price-hint {
    color: #00d4ff;
    font-size: 1.2rem;
    font-weight: 600;
    padding: 10px 20px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 10px;
    display: inline-block;
}

.pricing-features h4 {
    color: #1e40af;
    font-size: 1.1rem;
    margin: 20px 0 10px 0;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 5px;
}

.pricing-features > p {
    color: #64748b;
    font-size: 0.95rem;
    margin-bottom: 15px;
    font-style: italic;
}

/* 微信二维码弹窗样式 */
.qrcode-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    animation: fadeIn 0.3s ease;
}

.qrcode-modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    position: relative;
    animation: slideIn 0.3s ease;
}

.qrcode-close {
    position: absolute;
    right: 15px;
    top: 15px;
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.qrcode-close:hover {
    color: #00d4ff;
    background: rgba(0, 212, 255, 0.1);
}

.qrcode-image {
    width: 250px;
    height: 250px;
    margin: 20px auto;
    border: 3px solid #00d4ff;
    border-radius: 15px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #64748b;
}

.qrcode-modal h3 {
    color: #1e40af;
    margin-bottom: 10px;
}

.qrcode-modal p {
    color: #64748b;
    margin-bottom: 20px;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .consultation-notice {
        padding: 20px;
    }
    
    .consultation-notice h3 {
        font-size: 1.3rem;
    }
    
    .consultation-notice p {
        font-size: 1rem;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .qrcode-modal-content {
        width: 95%;
        padding: 20px;
    }
    
    .qrcode-image {
        width: 200px;
        height: 200px;
    }
}

/* 改进的时间轴样式 */
.timeline-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline-progress {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, #00d4ff, #0099cc);
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    display: flex;
    margin-bottom: 60px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
    margin-right: 30px;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 0;
    margin-left: 30px;
}

.timeline-item.animate {
    opacity: 1;
    transform: translateY(0);
}

.timeline-marker {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 120px;
    z-index: 2;
}

.marker-dot {
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #00d4ff, #0099cc);
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
    margin-bottom: 10px;
}

.timeline-year {
    background: linear-gradient(135deg, #00d4ff, #0099cc);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.2);
}

.timeline-content {
    flex: 1;
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #00d4ff;
    max-width: 400px;
}

.timeline-content h3 {
    color: #1e40af;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.timeline-content p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

.achievement-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.achievement-item {
    background: linear-gradient(135deg, #e0f7ff, #f0f9ff);
    color: #0369a1;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid #7dd3fc;
}

/* 团队成就网格 */
.founders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.team-achievements {
    text-align: center;
    margin-top: 60px;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.achievement-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.15);
}

.achievement-card i {
    font-size: 2.5rem;
    color: #00d4ff;
    margin-bottom: 15px;
}

.achievement-card h5 {
    color: #1e40af;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.achievement-card p {
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 响应式设计改进 */
@media (max-width: 768px) {
    .timeline-item {
        flex-direction: column !important;
        align-items: center;
    }
    
    .timeline-marker {
        width: 100%;
        margin-bottom: 20px;
    }
    
    .timeline-content {
        margin: 0 !important;
        width: 100%;
        max-width: none;
    }
    
    .timeline-progress {
        left: 30px;
    }
    
    .founders-grid {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* About页面专用样式 */
.about-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    position: relative;
}

.about-hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.breadcrumb {
    font-size: 0.9rem;
    margin-bottom: 20px;
    opacity: 0.9;
}

.breadcrumb a {
    color: inherit;
    text-decoration: none;
}

.breadcrumb span {
    margin: 0 10px;
}

.about-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-intro {
    font-size: 1.2rem;
    line-height: 1.6;
    opacity: 0.9;
}

/* 统计数据区域 */
.stats-section {
    padding: 80px 0;
    background: #f8fafc;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-card {
    text-align: center;
    background: white;
    padding: 40px 20px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e40af;
    margin-bottom: 8px;
}

.stat-label {
    color: #64748b;
    font-size: 1rem;
}

/* 品牌故事 */
.brand-story {
    padding: 100px 0;
}

.story-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.section-tag {
    display: inline-block;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.story-text h2 {
    font-size: 2.5rem;
    color: #1e40af;
    margin-bottom: 30px;
    line-height: 1.2;
}

.story-text p {
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.story-highlights {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 600;
    color: #1e40af;
}

.highlight-icon {
    font-size: 1.2rem;
}

.story-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-placeholder {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.algorithm-animation {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.anim-block {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    animation: pulse 2s infinite;
}

.anim-block:nth-child(2) {
    animation-delay: 0.5s;
}

.anim-block:nth-child(3) {
    animation-delay: 1s;
}

.anim-block:nth-child(4) {
    animation-delay: 1.5s;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* 训练营页面模块化样式 */
.camp-module {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    padding: 40px;
    margin-bottom: 40px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.camp-module:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.camp-module::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.module-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.module-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.module-title h3 {
    font-size: 1.8rem;
    color: #1e40af;
    margin-bottom: 8px;
}

.module-subtitle {
    color: #64748b;
    font-size: 1rem;
}

.module-content {
    line-height: 1.8;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.week-module {
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    border-radius: 15px;
    padding: 30px;
    border-left: 5px solid #667eea;
}

.week-number {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-bottom: 20px;
}

.week-content h4 {
    color: #1e40af;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.week-highlights {
    list-style: none;
    padding: 0;
}

.week-highlights li {
    padding: 8px 0;
    position: relative;
    padding-left: 25px;
    color: #4b5563;
}

.week-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

.outcome-modules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.outcome-module {
    background: white;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.outcome-module:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.1);
}

.outcome-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 1.8rem;
}

.instructor-modules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.instructor-module {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.instructor-avatar-circle {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    font-weight: bold;
    flex-shrink: 0;
}

.instructor-details h4 {
    color: #1e40af;
    margin-bottom: 8px;
    font-size: 1.4rem;
}

.instructor-role {
    color: #667eea;
    font-weight: 600;
    margin-bottom: 12px;
}

.instructor-bio {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 15px;
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-badge {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* 可信训练营特殊样式 */
.trustworthy-concept {
    padding: 80px 0;
    background: #f8fafc;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.concept-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.concept-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.1);
}

.concept-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.concept-card h4 {
    color: #1e40af;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.concept-card p {
    color: #64748b;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .camp-module {
        padding: 25px;
        margin-bottom: 25px;
    }
    
    .module-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .module-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .week-module {
        padding: 20px;
    }
    
    .instructor-module {
        flex-direction: column;
        text-align: center;
    }
    
    .instructor-modules {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .concept-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .concept-card {
        padding: 20px;
    }
}

/* 里程碑 */
.milestones {
    padding: 100px 0;
    background: #f8fafc;
}

.milestones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.milestone-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
    border-top: 4px solid #667eea;
}

.milestone-card:hover {
    transform: translateY(-5px);
}

.milestone-year {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 20px;
}

.milestone-card h3 {
    font-size: 1.3rem;
    color: #1e40af;
    margin-bottom: 15px;
}

.milestone-card p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

.milestone-achievement {
    background: linear-gradient(135deg, #e0f2fe, #f0f9ff);
    color: #0369a1;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
}

/* 团队部分 */
.team-section {
    padding: 100px 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 50px;
    margin-top: 60px;
}

.team-member {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.member-photo {
    flex-shrink: 0;
}

.photo-placeholder {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
}

.member-info h3 {
    font-size: 1.4rem;
    color: #1e40af;
    margin-bottom: 5px;
}

.member-role {
    color: #667eea;
    font-weight: 600;
    margin-bottom: 15px;
}

.member-desc {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

.member-highlights {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.highlight {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    color: #0369a1;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    display: inline-block;
    width: fit-content;
}

/* 优势部分 */
.advantages-section {
    padding: 100px 0;
    background: #f8fafc;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.advantage-item {
    text-align: center;
    padding: 40px 20px;
}

.advantage-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.advantage-item h3 {
    font-size: 1.3rem;
    color: #1e40af;
    margin-bottom: 15px;
}

.advantage-item p {
    color: #64748b;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-hero h1 {
        font-size: 2.2rem;
    }
    
    .story-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .team-member {
        flex-direction: column;
        text-align: center;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}