* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
        background: #000;
        color: #fff;
        overflow-x: hidden;
        line-height: 1.6;
    }

    .container {
        max-width: 480px;
        margin: 0 auto;
        background: #000;
        min-height: 100vh;
        position: relative;
    }

    @media (min-width: 768px) {
        .container {
            box-shadow: 0 0 50px rgba(255,255,255,0.1);
        }
    }

    /* Loading Animation */
    .loading {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: #000;
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 9999;
        transition: opacity 0.5s ease;
    }

    .loading.hidden {
        opacity: 0;
        pointer-events: none;
    }

    .spinner {
        width: 50px;
        height: 50px;
        border: 3px solid rgba(0,255,136,0.3);
        border-top: 3px solid #00ff88;
        border-radius: 50%;
        animation: spin 1s linear infinite;
    }

    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }

    /* 动态背景 */
    .bg-animation {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: -1;
        background: radial-gradient(circle at 20% 50%, #1a1a2e 0%, transparent 50%),
                    radial-gradient(circle at 80% 20%, #16213e 0%, transparent 50%),
                    radial-gradient(circle at 40% 80%, #0f1419 0%, transparent 50%);
        animation: bgShift 15s ease-in-out infinite;
    }

    @keyframes bgShift {
        0%, 100% { transform: scale(1) rotate(0deg); }
        50% { transform: scale(1.1) rotate(2deg); }
    }

    /* Hero Section */
    .hero {
        padding: 60px 30px 80px;
        text-align: center;
        position: relative;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 200px;
        height: 200px;
        background: linear-gradient(45deg, #00ff88, #0099ff);
        border-radius: 50%;
        filter: blur(80px);
        opacity: 0.3;
        animation: glow 4s ease-in-out infinite alternate;
    }

    @keyframes glow {
        0% { transform: translateX(-50%) scale(0.8); }
        100% { transform: translateX(-50%) scale(1.2); }
    }

    .avatar {
        width: 100px;
        height: 100px;
        border-radius: 50%;
        background: linear-gradient(135deg, #00ff88, #0099ff);
        margin: 0 auto 30px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 32px;
        font-weight: 700;
        position: relative;
        z-index: 2;
        animation: avatarFloat 3s ease-in-out infinite;
        cursor: pointer;
        transition: transform 0.3s ease;
    }

    .avatar:hover {
        transform: scale(1.05);
    }

    @keyframes avatarFloat {
        0%, 100% { transform: translateY(0px); }
        50% { transform: translateY(-10px); }
    }

    .hero h1 {
        font-size: 36px;
        font-weight: 700;
        margin-bottom: 15px;
        background: linear-gradient(135deg, #fff, #ccc);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        position: relative;
        z-index: 2;
    }

    .hero .subtitle {
        font-size: 18px;
        color: #888;
        margin-bottom: 40px;
        position: relative;
        z-index: 2;
    }

    .stats {
        display: flex;
        justify-content: center;
        gap: 40px;
        position: relative;
        z-index: 2;
    }

    .stat {
        text-align: center;
    }

    .stat-value {
        font-size: 28px;
        font-weight: 700;
        color: #00ff88;
        display: block;
        margin-bottom: 5px;
    }

    .stat-label {
        font-size: 14px;
        color: #666;
    }

    /* Trust Indicators */
    .trust-badges {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin: 30px 0;
        flex-wrap: wrap;
    }

    .trust-badge {
        background: rgba(255,255,255,0.05);
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: 10px;
        padding: 10px 15px;
        font-size: 12px;
        color: #888;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    /* Chart Section */
    .chart-section {
        margin: 0 30px 60px;
        background: rgba(255,255,255,0.05);
        border-radius: 20px;
        padding: 30px;
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255,255,255,0.1);
        position: relative;
        overflow: hidden;
    }

    .chart-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, #00ff88, transparent);
        animation: scanLine 3s linear infinite;
    }

    @keyframes scanLine {
        0% { transform: translateX(-100%); }
        100% { transform: translateX(100%); }
    }

    .chart {
        height: 150px;
        position: relative;
        margin-bottom: 20px;
    }

    .chart-grid {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: 
            linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
        background-size: 30px 30px;
    }

    .chart-line {
        position: absolute;
        bottom: 20px;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(90deg, #00ff88, #0099ff, #00ff88);
        animation: chartPulse 2s ease-in-out infinite;
    }

    @keyframes chartPulse {
        0%, 100% { opacity: 0.7; transform: scaleY(1); }
        50% { opacity: 1; transform: scaleY(1.5); }
    }

    .chart-points {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
    }

    .point {
        position: absolute;
        width: 6px;
        height: 6px;
        background: #00ff88;
        border-radius: 50%;
        box-shadow: 0 0 10px #00ff88;
    }

    .point:nth-child(1) { left: 10%; bottom: 30%; animation: pointGlow 2s infinite; animation-delay: 0s; }
    .point:nth-child(2) { left: 25%; bottom: 50%; animation: pointGlow 2s infinite; animation-delay: 0.4s; }
    .point:nth-child(3) { left: 45%; bottom: 70%; animation: pointGlow 2s infinite; animation-delay: 0.8s; }
    .point:nth-child(4) { left: 65%; bottom: 60%; animation: pointGlow 2s infinite; animation-delay: 1.2s; }
    .point:nth-child(5) { left: 85%; bottom: 80%; animation: pointGlow 2s infinite; animation-delay: 1.6s; }

    @keyframes pointGlow {
        0%, 100% { transform: scale(1); box-shadow: 0 0 10px #00ff88; }
        50% { transform: scale(1.5); box-shadow: 0 0 20px #00ff88; }
    }

    .chart-label {
        text-align: center;
        color: #666;
        font-size: 14px;
    }

    /* Content Sections */
    .section {
        margin: 0 30px 50px;
        opacity: 0;
        transform: translateY(50px);
        animation: fadeInUp 1s ease-out forwards;
    }

    .section:nth-child(4) { animation-delay: 0.2s; }
    .section:nth-child(5) { animation-delay: 0.4s; }
    .section:nth-child(6) { animation-delay: 0.6s; }
    .section:nth-child(7) { animation-delay: 0.8s; }
    .section:nth-child(8) { animation-delay: 1.0s; }
    .section:nth-child(9) { animation-delay: 1.2s; }

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

    .section h2 {
        font-size: 24px;
        font-weight: 600;
        margin-bottom: 20px;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .section-icon {
        font-size: 28px;
    }

    .section p {
        font-size: 16px;
        line-height: 1.6;
        color: #aaa;
        margin-bottom: 20px;
    }

    .benefits {
        list-style: none;
    }

    .benefits li {
        padding: 15px 0;
        font-size: 16px;
        color: #ccc;
        display: flex;
        align-items: center;
        gap: 15px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        transition: all 0.3s ease;
    }

    .benefits li:hover {
        background: rgba(0,255,136,0.05);
        padding-left: 10px;
    }

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

    .check {
        width: 20px;
        height: 20px;
        background: #00ff88;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 12px;
        flex-shrink: 0;
    }

    /* Feature Cards */
    .feature-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 15px;
        margin: 20px 0;
    }

    .feature-card {
        background: rgba(255,255,255,0.05);
        border-radius: 15px;
        padding: 20px;
        text-align: center;
        border: 1px solid rgba(255,255,255,0.1);
        transition: all 0.3s ease;
        cursor: pointer;
    }

    .feature-card:hover {
        background: rgba(0,255,136,0.1);
        border-color: rgba(0,255,136,0.3);
        transform: translateY(-5px);
    }

    .feature-icon {
        font-size: 32px;
        margin-bottom: 10px;
        display: block;
    }

    .feature-title {
        font-size: 14px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 8px;
    }

    .feature-desc {
        font-size: 12px;
        color: #888;
        line-height: 1.4;
    }

    /* Timeline */
    .timeline {
        position: relative;
        padding-left: 30px;
    }

    .timeline::before {
        content: '';
        position: absolute;
        left: 15px;
        top: 0;
        bottom: 0;
        width: 2px;
        background: linear-gradient(to bottom, #00ff88, #0099ff);
    }

    .timeline-item {
        position: relative;
        margin-bottom: 30px;
        transition: all 0.3s ease;
    }

    .timeline-item:hover {
        transform: translateX(5px);
    }

    .timeline-item::before {
        content: '';
        position: absolute;
        left: -23px;
        top: 5px;
        width: 12px;
        height: 12px;
        background: #00ff88;
        border-radius: 50%;
        box-shadow: 0 0 10px #00ff88;
    }

    .timeline-title {
        font-size: 16px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 5px;
    }

    .timeline-desc {
        font-size: 14px;
        color: #aaa;
        line-height: 1.5;
    }

    /* Stats Grid */
    .stats-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
        margin: 20px 0;
    }

    .stat-card {
        background: rgba(255,255,255,0.05);
        border-radius: 15px;
        padding: 20px;
        text-align: center;
        border: 1px solid rgba(255,255,255,0.1);
        transition: all 0.3s ease;
    }

    .stat-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 30px rgba(0,255,136,0.2);
    }

    .stat-card-number {
        font-size: 32px;
        font-weight: 700;
        color: #00ff88;
        display: block;
        margin-bottom: 5px;
    }

    .stat-card-label {
        font-size: 14px;
        color: #666;
    }

    /* Highlight Box */
    .highlight {
        background: linear-gradient(135deg, rgba(0,255,136,0.1), rgba(0,153,255,0.1));
        border: 1px solid rgba(0,255,136,0.3);
        border-radius: 15px;
        padding: 25px;
        margin: 40px 30px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .highlight::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: linear-gradient(45deg, transparent, rgba(0,255,136,0.1), transparent);
        animation: shimmer 3s linear infinite;
    }

    @keyframes shimmer {
        0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
        100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
    }

    .highlight h3 {
        font-size: 20px;
        color: #00ff88;
        margin-bottom: 15px;
        position: relative;
        z-index: 2;
    }

    .highlight p {
        color: #ccc;
        position: relative;
        z-index: 2;
    }

    /* Social Proof */
    .testimonial {
        background: rgba(255,255,255,0.05);
        border-radius: 15px;
        padding: 20px;
        margin: 20px 0;
        border-left: 4px solid #00ff88;
        transition: all 0.3s ease;
    }

    .testimonial:hover {
        transform: translateX(5px);
        background: rgba(255,255,255,0.08);
    }

    .testimonial-text {
        font-style: italic;
        color: #ccc;
        margin-bottom: 10px;
        line-height: 1.5;
    }

    .testimonial-author {
        font-size: 14px;
        color: #00ff88;
        font-weight: 600;
    }

    /* CTA Section */
    .cta {
        background: linear-gradient(135deg, rgba(0,255,136,0.1), rgba(0,153,255,0.1));
        margin: 60px 30px 40px;
        padding: 40px 30px;
        border-radius: 20px;
        text-align: center;
        border: 1px solid rgba(255,255,255,0.1);
        position: sticky;
        bottom: 20px;
        z-index: 100;
    }

    .cta h2 {
        font-size: 26px;
        margin-bottom: 20px;
        color: #fff;
    }

    .cta-button {
        display: inline-block;
        background: linear-gradient(135deg, #00ff88, #0099ff);
        color: #000;
        padding: 18px 40px;
        text-decoration: none;
        border-radius: 50px;
        font-size: 18px;
        font-weight: 600;
        margin: 20px 0;
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
        box-shadow: 0 5px 20px rgba(0,255,136,0.3);
    }

    .cta-button::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
        transition: left 0.6s;
    }

    .cta-button:hover::before {
        left: 100%;
    }

    .cta-button:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 30px rgba(0,255,136,0.4);
    }

    .cta-button:active {
        transform: translateY(0px);
    }

    .cta-note {
        font-size: 14px;
        color: #666;
        margin-top: 15px;
    }

    /* Urgency Badge */
    .urgency {
        background: rgba(255,0,68,0.1);
        border: 1px solid rgba(255,0,68,0.3);
        border-radius: 25px;
        padding: 10px 20px;
        margin: 20px 30px;
        text-align: center;
        font-size: 14px;
        color: #ff0044;
        font-weight: 600;
        animation: urgencyPulse 2s infinite;
    }

    @keyframes urgencyPulse {
        0%, 100% { transform: scale(1); }
        50% { transform: scale(1.02); }
    }

    /* FAQ Section */
    .faq-item {
        background: rgba(255,255,255,0.03);
        border-radius: 10px;
        margin-bottom: 15px;
        overflow: hidden;
        border: 1px solid rgba(255,255,255,0.1);
        transition: all 0.3s ease;
    }

    .faq-item.active {
        background: rgba(0,255,136,0.05);
        border-color: rgba(0,255,136,0.2);
    }

    .faq-question {
        padding: 15px 20px;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-weight: 600;
        color: #fff;
        transition: background 0.3s ease;
    }

    .faq-question:hover {
        background: rgba(255,255,255,0.05);
    }

    .faq-toggle {
        font-size: 18px;
        transition: transform 0.3s ease;
    }

    .faq-item.active .faq-toggle {
        transform: rotate(45deg);
    }

    .faq-answer {
        padding: 0 20px;
        color: #aaa;
        font-size: 14px;
        line-height: 1.5;
        max-height: 0;
        overflow: hidden;
        transition: all 0.3s ease;
    }

    .faq-item.active .faq-answer {
        padding: 0 20px 15px;
        max-height: 200px;
    }

    /* Floating Elements */
    .float-element {
        position: absolute;
        font-size: 24px;
        opacity: 0.1;
        animation: floatUp 20s linear infinite;
        pointer-events: none;
    }

    .float-element:nth-child(1) { left: 10%; animation-delay: 0s; }
    .float-element:nth-child(2) { left: 80%; animation-delay: 7s; }
    .float-element:nth-child(3) { left: 60%; animation-delay: 14s; }

    @keyframes floatUp {
        0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
        10% { opacity: 0.1; }
        90% { opacity: 0.1; }
        100% { transform: translateY(-100px) rotate(360deg); opacity: 0; }
    }

    /* Scroll to Top Button */
    .scroll-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        width: 50px;
        height: 50px;
        background: linear-gradient(135deg, #00ff88, #0099ff);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        opacity: 0;
        transform: translateY(100px);
        transition: all 0.3s ease;
        z-index: 1000;
    }

    .scroll-top.visible {
        opacity: 1;
        transform: translateY(0);
    }

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

    /* Responsive Design */
    @media (max-width: 480px) {
        .hero {
            padding: 40px 20px 60px;
        }
        
        .hero h1 {
            font-size: 28px;
        }
        
        .stats {
            gap: 20px;
        }
        
        .section {
            margin: 0 20px 40px;
        }
        
        .chart-section {
            margin: 0 20px 40px;
            padding: 20px;
        }
        
        .cta {
            margin: 40px 20px 20px;
            padding: 30px 20px;
        }
        
        .urgency {
            margin: 20px 20px;
        }
    }

    /* Accessibility */
    @media (prefers-reduced-motion: reduce) {
        * {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
        }
    }

    /* Focus styles for keyboard navigation */
    .cta-button:focus,
    .faq-question:focus,
    .scroll-top:focus {
        outline: 2px solid #00ff88;
        outline-offset: 2px;
    }

    /* Philip Hopf Professional Image Section */
    .philip-showcase {
        background: rgba(255,255,255,0.02);
        border-radius: 20px;
        padding: 30px;
        margin: 40px 30px;
        border: 1px solid rgba(255,255,255,0.1);
    }

    .philip-image-container {
        position: relative;
        margin-bottom: 25px;
        border-radius: 15px;
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    }

    .philip-image {
        width: 100%;
        height: 250px;
        object-fit: cover;
        transition: transform 0.3s ease;
    }

    .philip-image-container:hover .philip-image {
        transform: scale(1.05);
    }

    .image-overlay {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        background: linear-gradient(transparent, rgba(0,0,0,0.8));
        padding: 20px;
        transform: translateY(100%);
        transition: transform 0.3s ease;
    }

    .philip-image-container:hover .image-overlay {
        transform: translateY(0);
    }

    .overlay-text h3 {
        color: #00ff88;
        font-size: 18px;
        margin-bottom: 5px;
        font-weight: 600;
    }

    .overlay-text p {
        color: #ccc;
        font-size: 14px;
        margin: 0;
    }

    .philip-intro-text h2 {
        margin-bottom: 15px;
    }

    .philip-intro-text p {
        font-size: 16px;
        line-height: 1.6;
        color: #aaa;
    }

    /* Philip Hopf Teaching Section */
    .philip-teaching {
        background: linear-gradient(135deg, rgba(0,255,136,0.05), rgba(0,153,255,0.05));
        border-radius: 20px;
        padding: 30px;
        margin: 40px 30px;
        border: 1px solid rgba(0,255,136,0.2);
    }

    .teaching-content {
        display: flex;
        flex-direction: column;
        gap: 25px;
    }

    .teaching-image-container {
        position: relative;
        border-radius: 15px;
        overflow: hidden;
        box-shadow: 0 15px 35px rgba(0,255,136,0.2);
    }

    .teaching-image {
        width: 100%;
        height: 200px;
        object-fit: cover;
        transition: all 0.3s ease;
    }

    .teaching-image-container:hover .teaching-image {
        transform: scale(1.02);
        filter: brightness(1.1);
    }

    .teaching-badge {
        position: absolute;
        top: 15px;
        right: 15px;
        background: rgba(0,255,136,0.9);
        color: #000;
        padding: 8px 15px;
        border-radius: 20px;
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 12px;
        font-weight: 600;
        backdrop-filter: blur(10px);
    }

    .badge-icon {
        font-size: 14px;
    }

    .teaching-text {
        text-align: center;
    }

    .teaching-text p {
        font-size: 18px;
        font-style: italic;
        color: #ccc;
        line-height: 1.6;
        margin-bottom: 15px;
        position: relative;
    }

    .teaching-text p::before,
    .teaching-text p::after {
        content: '"';
        font-size: 24px;
        color: #00ff88;
        font-weight: bold;
    }

    .quote-author {
        color: #00ff88;
        font-weight: 600;
        font-size: 16px;
    }

    /* Responsive Design for New Sections */
    @media (min-width: 768px) {
        .teaching-content {
            flex-direction: row;
            align-items: center;
        }

        .teaching-image-container {
            flex: 1;
            max-width: 300px;
        }

        .teaching-text {
            flex: 1;
            text-align: left;
            padding-left: 30px;
        }

        .philip-image {
            height: 300px;
        }

        .teaching-image {
            height: 250px;
        }
    }

    @media (max-width: 480px) {
        .philip-showcase,
        .philip-teaching {
            margin: 40px 20px;
            padding: 20px;
        }

        .philip-image {
            height: 200px;
        }

        .teaching-image {
            height: 280px;
        }

        .teaching-text p {
            font-size: 16px;
        }

        .overlay-text h3 {
            font-size: 16px;
        }

        .overlay-text p {
            font-size: 12px;
        }
    }

    .floating-button-container {
        position: fixed;
        bottom: 30px;
        left: 0;
        right: 0;
        display: flex;
        justify-content: center;
        z-index: 1000;
        pointer-events: none;
        }
        @keyframes bounce {
        0%, 100% {
        transform: translateY(0);
        }
        50% {
        transform: translateY(-10px);
        }
        }
        .floating-button {
        position: relative;
        background: linear-gradient(135deg, #00ff88, #0099ff);
        color: white;
        padding: 15px 30px;
        border-radius: 50px;
        text-decoration: none;
        font-weight: bold;
        font-size: 18px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        display: flex;
        align-items: center;
        gap: 10px;
        animation: bounce 2s infinite;
        transition: all 0.3s ease;
        white-space: nowrap;
        pointer-events: auto;
        }
        
        .floating-button:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }
        
        .floating-button .icon {
        font-size: 24px;
        }
        
        @media (max-width: 768px) {
        .floating-button-container {
        bottom: 20px;
        }
        
        .floating-button {
        font-size: 16px;
        padding: 12px 24px;
        }
        }
        
        @media (max-width: 480px) {
        .floating-button {
        font-size: 14px;
        padding: 10px 20px;
        }
        
        .floating-button .icon {
        font-size: 18px;
        }
        }