/* Hero Section - 参考Linear的紧凑度 */
    .hero-section {
        padding: 100px 0 80px;
        text-align: center;
        color: white;
        position: relative;
        overflow: hidden;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    }

    /* 震撼流动背景 - 超强动态效果 */
    .hero-bg-pattern {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 0;
        overflow: hidden;
    }

    /* 渐变球体 - 优化性能 */
    .gradient-sphere {
        position: absolute;
        border-radius: 50%;
        filter: blur(60px);
        opacity: 0.65;
        will-change: transform;
        transform: translateZ(0); /* 强制开启 GPU 加速 */
    }

    .sphere-1 {
        width: 900px;
        height: 900px;
        background: radial-gradient(circle, rgba(102, 126, 234, 0.95) 0%, rgba(168, 237, 234, 0.7) 35%, transparent 65%);
        top: -350px;
        left: -250px;
        animation: float-1 18s ease-in-out infinite;
    }

    .sphere-2 {
        width: 850px;
        height: 850px;
        background: radial-gradient(circle, rgba(255, 215, 0, 1) 0%, rgba(255, 107, 107, 0.8) 30%, rgba(118, 75, 162, 0.6) 50%, transparent 65%);
        top: 10%;
        right: -300px;
        animation: float-2 15s ease-in-out infinite;
    }

    .sphere-3 {
        width: 750px;
        height: 750px;
        background: radial-gradient(circle, rgba(138, 43, 226, 0.9) 0%, rgba(102, 126, 234, 0.7) 35%, transparent 65%);
        bottom: -250px;
        left: 15%;
        animation: float-3 20s ease-in-out infinite;
    }

    .sphere-4 {
        width: 700px;
        height: 700px;
        background: radial-gradient(circle, rgba(255, 182, 193, 0.85) 0%, rgba(168, 237, 234, 0.6) 35%, transparent 65%);
        top: 35%;
        left: 45%;
        animation: float-4 16s ease-in-out infinite;
    }


    /* 超流动动画 - 更快更震撼 */
    @keyframes float-1 {
        0%, 100% {
            transform: translate(0, 0);
        }

        25% {
            transform: translate(150px, -120px);
        }

        50% {
            transform: translate(80px, 80px);
        }

        75% {
            transform: translate(-80px, -60px);
        }
    }

    @keyframes float-2 {
        0%, 100% {
            transform: translate(0, 0);
        }

        33% {
            transform: translate(-140px, 100px);
        }

        66% {
            transform: translate(100px, -80px);
        }
    }

    @keyframes float-3 {
        0%, 100% {
            transform: translate(0, 0);
        }

        20% {
            transform: translate(120px, -100px);
        }

        40% {
            transform: translate(-70px, 130px);
        }

        60% {
            transform: translate(140px, 60px);
        }

        80% {
            transform: translate(-100px, -80px);
        }
    }

    @keyframes float-4 {
        0%, 100% {
            transform: translate(0, 0);
        }

        50% {
            transform: translate(-160px, -140px);
        }
    }


    /* 流动光效 */
    .light-beam {
        position: absolute;
        width: 200%;
        height: 200%;
        top: -50%;
        left: -50%;
        background: linear-gradient( 120deg, transparent 0%, rgba(255, 255, 255, 0.05) 45%, rgba(255, 255, 255, 0.1) 50%, rgba(255, 255, 255, 0.05) 55%, transparent 100% );
        animation: beam-sweep 8s linear infinite;
        pointer-events: none;
    }

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

        100% {
            transform: translateX(100%) translateY(100%) rotate(30deg);
        }
    }

    /* 粒子效果 - 减少数量优化性能 */
    .particle {
        position: absolute;
        width: 3px;
        height: 3px;
        background: rgba(255, 255, 255, 0.5);
        border-radius: 50%;
    }

    .particle-1 {
        top: 20%;
        left: 10%;
        animation: particle-float 15s ease-in-out infinite;
    }

    .particle-2 {
        top: 40%;
        left: 80%;
        animation: particle-float 12s ease-in-out infinite 2s;
    }

    .particle-3 {
        top: 60%;
        left: 30%;
        animation: particle-float 18s ease-in-out infinite 4s;
    }

    @keyframes particle-float {
        0%, 100% {
            transform: translateY(0) translateX(0);
            opacity: 0;
        }

        10% {
            opacity: 0.5;
        }

        50% {
            transform: translateY(-150px) translateX(80px);
            opacity: 0.8;
        }

        90% {
            opacity: 0.3;
        }
    }

    /* 网格纹理 - 增强版 */
    .grid-overlay {
        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: 40px 40px;
        z-index: 1;
        animation: grid-move 20s linear infinite;
    }

    @keyframes grid-move {
        0% {
            background-position: 0 0;
        }

        100% {
            background-position: 40px 40px;
        }
    }

    /* 渐变遮罩 */
    .hero-gradient-mask {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.4) 0%, rgba(118, 75, 162, 0.3) 50%, rgba(102, 126, 234, 0.4) 100%);
        z-index: 2;
    }

    .hero-content {
        position: relative;
        z-index: 10;
    }

    .hero-lead {
        font-size: 0.8rem;
        font-weight: 600;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: rgba(255,255,255,0.88);
        margin-bottom: 1rem;
    }

    .hero-lead-pill {
        display: inline-block;
        padding: 0.35rem 0.85rem;
        background: rgba(255,255,255,0.12);
        border: 1px solid rgba(255,255,255,0.25);
        border-radius: 999px;
        backdrop-filter: blur(6px);
    }

    .hero-title {
        font-size: 3.5rem;
        font-weight: 800;
        margin-bottom: 1.25rem;
        line-height: 1.15;
        letter-spacing: -0.03em;
        max-width: 800px;
        margin-left: auto;
        margin-right: auto;
    }

        .hero-title .gradient-text {
            background: linear-gradient(120deg, #fff 0%, #a8edea 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            position: relative;
            animation: shimmer 3s infinite;
        }

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

        50% {
            background-position: 100% 50%;
        }
    }

    .hero-subtitle {
        font-size: 1.12rem;
        opacity: 0.92;
        margin-bottom: 2.25rem;
        max-width: 580px;
        margin-left: auto;
        margin-right: auto;
        font-weight: 400;
        line-height: 1.55;
    }

        .hero-subtitle .highlight {
            font-weight: 700;
            color: #ffd700;
        }

    .cta-buttons {
        display: flex;
        gap: 1rem;
        justify-content: center;
        flex-wrap: wrap;
        margin-bottom: 2.5rem;
    }

    .btn-modern {
        padding: 0.9rem 2rem;
        font-weight: 600;
        font-size: 1rem;
        border-radius: 10px;
        transition: all 0.3s;
        border: none;
        cursor: pointer;
        position: relative;
        overflow: hidden;
    }

        .btn-modern:before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255,255,255,0.3);
            transform: translate(-50%, -50%);
            transition: width 0.6s, height 0.6s;
        }

        .btn-modern:hover:before {
            width: 300px;
            height: 300px;
        }

    .btn-primary-modern {
        background: white;
        color: #667eea;
        box-shadow: 0 8px 24px rgba(0,0,0,0.15);
        position: relative;
    }

        .btn-primary-modern:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0,0,0,0.25);
        }

    .btn-ghost {
        background: rgba(255,255,255,0.15);
        color: white;
        border: 2px solid rgba(255,255,255,0.8);
        backdrop-filter: blur(10px);
    }

        .btn-ghost:hover {
            background: white;
            color: #667eea;
            border-color: white;
        }

    .hero-stats {
        display: flex;
        justify-content: center;
        gap: 3rem;
        flex-wrap: wrap;
        position: relative;
        z-index: 10;
    }

    .stat-item {
        text-align: center;
    }

    .stat-number {
        font-size: 2rem;
        font-weight: 700;
        display: block;
        margin-bottom: 0.3rem;
    }

    .stat-label {
        font-size: 0.9rem;
        opacity: 0.85;
    }

    /* 客户展示区 - Linear风格 */
    .clients-section {
        background: white;
        padding-bottom: 3rem;
        margin-top: -50px;
        border-radius: 30px 30px 0 0;
        box-shadow: 0 -10px 30px rgba(0,0,0,0.1);
        position: relative;
        z-index: 100;
        text-align: center;
    }

    .clients-heading {
        font-size: 0.875rem;
        font-weight: 600;
        color: #718096;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        margin-bottom: 0.5rem;
    }

    .clients-subheading {
        font-size: 1rem;
        color: #4a5568;
        margin-bottom: 3rem;
        font-weight: 400;
    }

    .clients-grid {
        display: grid;
        grid-template-columns: repeat(3, 280px);
        grid-template-rows: repeat(2, 80px);
        gap: 2.5rem 4rem;
        justify-content: center;
        align-items: center;
        max-width: 100vw;
        margin: 0 auto;
        position: relative;
    }

    .clients-row {
        display: contents;
    }

    .client-logo {
        opacity: 0.4;
        transition: all 0.6s ease-in-out;
        filter: grayscale(100%) blur(0px);
        height: 80px;
        width: 280px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
    }

        .client-logo:hover {
            opacity: 0.8 !important;
            filter: grayscale(0%) blur(0px) !important;
        }

        .client-logo.blurred {
            opacity: 0.4;
            filter: grayscale(100%) blur(8px);
        }

        .client-logo svg {
            height: 28px;
            width: auto;
            max-width: 120px;
        }

    .client-logo-text {
        font-size: 1.2rem;
        font-weight: 600;
        color: #2d3748;
        white-space: nowrap;
        text-align: center;
        width: 100%;
    }

    .trust-badges {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 3rem;
        flex-wrap: wrap;
        margin-top: 3rem;
        padding-top: 3rem;
        border-top: 1px solid #e2e8f0;
    }

    .trust-badge {
        font-size: 0.85rem;
        color: #718096;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .trust-icon {
        width: 18px;
        height: 18px;
        color: #48bb78;
    }



    /* Features Section - Linear紧凑风格 */
    .features-section {
        background: white;
        padding: 80px 0;
        position: relative;
        z-index: 100;
    }

    .section-title {
        text-align: center;
        font-size: 2.5rem;
        font-weight: 700;
        margin-bottom: 1rem;
        color: #1a202c;
        letter-spacing: -0.03em;
    }

    .section-subtitle {
        text-align: center;
        font-size: 1.1rem;
        color: #718096;
        margin-bottom: 3rem;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
        line-height: 1.5;
    }

    .feature-card {
        text-align: center;
        padding: 1.75rem 1.5rem;
        border-radius: 12px;
        transition: all 0.3s ease;
        height: 100%;
        background: #f7fafc;
        border: 1px solid #e2e8f0;
    }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.08);
            border-color: #667eea;
            background: white;
        }

    .feature-icon {
        width: 56px;
        height: 56px;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.25rem;
        font-size: 1.75rem;
        transition: all 0.3s;
    }

    .feature-card:hover .feature-icon {
        transform: scale(1.05);
    }

    .feature-title {
        font-size: 1.15rem;
        font-weight: 600;
        margin-bottom: 0.75rem;
        color: #2d3748;
    }

    .feature-desc {
        color: #718096;
        line-height: 1.6;
        font-size: 0.95rem;
    }

    /* How It Works */
    .how-it-works {
        background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
        padding: 80px 0;
        position: relative;
        z-index: 100;
    }

    .step-container {
        position: relative;
    }

    .step-card {
        background: white;
        border-radius: 16px;
        padding: 2rem 1.75rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.06);
        position: relative;
        height: 100%;
        transition: all 0.3s;
    }

        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }

    .step-number {
        width: 48px;
        height: 48px;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 1.5rem;
        margin-bottom: 1.25rem;
        box-shadow: 0 3px 8px rgba(102,126,234,0.3);
    }

    .step-title {
        font-size: 1.35rem;
        font-weight: 600;
        margin-bottom: 0.875rem;
        color: #2d3748;
    }

    .step-desc {
        color: #718096;
        line-height: 1.6;
        font-size: 0.95rem;
    }

    /* Pricing Section */
    .pricing-section {
        padding: 80px 0;
        background: white;
        position: relative;
        z-index: 100;
    }

    .pricing-card {
        background: white;
        border-radius: 16px;
        padding: 1.75rem 1.5rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        transition: all 0.3s;
        height: 100%;
        border: 1px solid #e2e8f0;
        position: relative;
        display: flex;
        flex-direction: column;
    }

        .pricing-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 28px rgba(0,0,0,0.12);
        }

        .pricing-card.popular {
            border: 2px solid #667eea;
            transform: scale(1.02);
            background: linear-gradient(135deg, #f7fafc 0%, white 100%);
        }

    .popular-badge {
        position: absolute;
        top: -12px;
        left: 50%;
        transform: translateX(-50%);
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        padding: 0.4rem 1.25rem;
        border-radius: 20px;
        font-weight: 600;
        font-size: 0.8rem;
        box-shadow: 0 3px 8px rgba(102,126,234,0.3);
    }

    .price-badge {
        color: #667eea;
        font-weight: 700;
        font-size: 0.95rem;
        margin-bottom: 1rem;
        display: block;
    }

    .price {
        font-size: 2.75rem;
        font-weight: 800;
        color: #1a202c;
        margin-bottom: 0.25rem;
    }

    .price-currency {
        font-size: 1.5rem;
        color: #718096;
        font-weight: 600;
    }

    .price-credits {
        color: #718096;
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }

    .features-list {
        list-style: none;
        padding: 0;
        margin: 1.5rem 0;
        flex: 1;
    }

        .features-list li {
            padding: 0.5rem 0;
            color: #4a5568;
            display: flex;
            align-items: flex-start;
            font-size: 0.9rem;
            line-height: 1.5;
        }

            .features-list li:before {
                content: "✓";
                color: #48bb78;
                font-weight: bold;
                margin-right: 0.75rem;
                font-size: 1.1rem;
                flex-shrink: 0;
            }

    /* FAQ Section */
    .faq-section {
        background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
        padding: 80px 0;
        position: relative;
        z-index: 100;
    }

    .faq-container {
        max-width: 850px;
        margin: 0 auto;
    }

    .faq-item {
        background: white;
        border-radius: 12px;
        margin-bottom: 1rem;
        overflow: hidden;
        box-shadow: 0 2px 8px rgba(0,0,0,0.04);
        transition: all 0.3s;
        border: 1px solid #e2e8f0;
    }

        .faq-item:hover {
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        }

    .faq-question {
        padding: 1.25rem 1.5rem;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-weight: 600;
        font-size: 1rem;
        color: #2d3748;
        user-select: none;
        transition: all 0.3s;
    }

        .faq-question:hover {
            color: #667eea;
        }

    .faq-icon {
        width: 24px;
        height: 24px;
        border-radius: 50%;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.2rem;
        transition: transform 0.3s;
        flex-shrink: 0;
        margin-left: 1rem;
    }

    .faq-item.active .faq-icon {
        transform: rotate(180deg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-out, padding 0.4s ease-out;
        padding: 0 1.5rem;
    }

    .faq-item.active .faq-answer {
        max-height: 500px;
        padding: 0 1.5rem 1.25rem 1.5rem;
    }

    .faq-answer p {
        color: #718096;
        line-height: 1.6;
        font-size: 0.95rem;
        margin: 0;
    }

    /* CTA Section */
    .cta-section {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        padding: 80px 0;
        color: white;
        text-align: center;
        position: relative;
        overflow: hidden;
        z-index: 100;
    }

        .cta-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%), radial-gradient(circle at 80% 80%, rgba(255,255,255,0.08) 0%, transparent 50%);
        }

    .cta-content {
        position: relative;
        z-index: 1;
    }

    .cta-title {
        font-size: 2.5rem;
        font-weight: 700;
        margin-bottom: 1rem;
    }

    .cta-subtitle {
        font-size: 1.1rem;
        opacity: 0.9;
        margin-bottom: 2rem;
    }

    @media (max-width: 768px) {
        .hero-lead {
            font-size: 0.75rem;
            letter-spacing: 0.08em;
        }

        .hero-title {
            font-size: 2.25rem;
        }

        .section-title {
            font-size: 1.75rem;
        }

        .pricing-card.popular {
            transform: scale(1);
        }

        .pricing-card {
            margin-bottom: 2rem;
        }

        .hero-stats {
            gap: 2rem;
        }

        .stat-number {
            font-size: 1.5rem;
        }

        .hero-subtitle {
            font-size: 1rem;
        }

        .clients-grid {
            grid-template-columns: repeat(2, 140px);
            grid-template-rows: repeat(3, 60px);
        }
    }

    @media (min-width: 1400px) {
        .pricing-card {
            max-width: 380px;
            margin: 0 auto;
        }
    }

    @media (min-width: 1600px) {
        .container {
            max-width: 1280px !important;
        }
    }