/* Modern CSS Reset */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    :root {
        /* Color Palette */
        --primary: #22A88D;
        --secondary: #8DC63F;
        --accent: #5BC2E7;
        --light-bg: #F0FAFB;
        --lighter-bg: #FAFCFD;
        --dark-text: #2C3E50;
        --light-text: #ffffff;
        --gray-text: #64748B;
        --medium-gray: #94A3B8;
        --error-color: #EF4444;
        --success-color: #10B981;

        /* Shadows */
        --shadow-soft: 0 1px 3px rgba(34, 168, 141, 0.05);
        --shadow-sm: 0 2px 12px rgba(34, 168, 141, 0.08);
        --shadow-md: 0 4px 20px rgba(34, 168, 141, 0.12);
        --shadow-lg: 0 8px 40px rgba(34, 168, 141, 0.18);
        --shadow-xl: 0 20px 60px rgba(34, 168, 141, 0.25);
        --shadow-colored: 0 10px 40px rgba(91, 194, 231, 0.3);

        /* Transitions */
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        line-height: 1.6;
        color: var(--dark-text);
        overflow-x: hidden;
        background: #ffffff;
        min-height: 100vh;
    }

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

    /* Accessibility */
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }

    /* Cookie Consent Banner */
    .cookie-consent {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: white;
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
        padding: 1.5rem 2rem;
        z-index: 10001;
        transform: translateY(100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-top: 3px solid var(--primary);
    }

    .cookie-consent.show {
        transform: translateY(0);
    }

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

    .cookie-text {
        display: flex;
        align-items: center;
        gap: 1rem;
        flex: 1;
    }

    .cookie-text strong {
        color: var(--primary);
        font-size: 1.1rem;
    }

    .cookie-text p {
        color: var(--gray-text);
        margin: 0;
    }

    .cookie-actions {
        display: flex;
        gap: 1rem;
    }

    .cookie-btn {
        padding: 10px 24px;
        border: none;
        border-radius: 50px;
        font-weight: 700;
        cursor: pointer;
        transition: var(--transition);
        font-family: inherit;
        font-size: 0.95rem;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .cookie-accept {
        background: linear-gradient(135deg, var(--secondary), #9DD14E);
        color: white;
        box-shadow: 0 4px 15px rgba(141, 198, 63, 0.3);
    }

    .cookie-accept:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(141, 198, 63, 0.4);
    }

    .cookie-decline {
        background: var(--light-bg);
        color: var(--gray-text);
    }

    .cookie-decline:hover {
        background: var(--lighter-bg);
        color: var(--dark-text);
    }

    @media (max-width: 768px) {
        .cookie-content {
            flex-direction: column;
            text-align: center;
        }

        .cookie-text {
            flex-direction: column;
            text-align: center;
        }

        .cookie-actions {
            width: 100%;
            flex-direction: column;
        }

        .cookie-btn {
            width: 100%;
            justify-content: center;
        }
    }

    /* Loading Screen */
    .loading-screen {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
        display: flex;
        justify-content: center;
        align-items: center;
        z-index: 10000;
        transition: opacity 0.5s, visibility 0.5s;
    }

    .loading-screen.hidden {
        opacity: 0;
        visibility: hidden;
    }

    .loader {
        width: 70px;
        height: 70px;
        border: 4px solid rgba(255, 255, 255, 0.2);
        border-top-color: white;
        border-radius: 50%;
        animation: spin 0.8s linear infinite;
    }

    @keyframes spin {
        to {
            transform: rotate(360deg);
        }
    }

    /* Scroll Progress Bar */
    .scroll-progress {
        position: fixed;
        top: 0;
        left: 0;
        width: 0%;
        height: 3px;
        background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
        z-index: 10001;
        transition: width 0.1s ease-out;
    }

    /* Floating Action Buttons */
    .floating-btn {
        position: fixed;
        right: 30px;
        width: 50px;
        height: 50px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        color: white;
        border: none;
        border-radius: 50%;
        cursor: pointer;
        transition: var(--transition-bounce);
        z-index: 999;
        box-shadow: var(--shadow-lg);
        font-size: 1.2rem;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .back-to-top {
        bottom: 30px;
        opacity: 0;
        visibility: hidden;
    }

    .back-to-top.visible {
        opacity: 1;
        visibility: visible;
    }

    .floating-btn:hover {
        transform: translateY(-5px) scale(1.1);
        box-shadow: var(--shadow-xl);
    }

    .support-button {
        bottom: 95px;
        width: 56px;
        height: 56px;
        background: linear-gradient(135deg, var(--secondary) 0%, #9DD14E 100%);
        font-size: 1.4rem;
        animation: pulse 2s ease-in-out infinite;
    }

    @keyframes pulse {

        0%,
        100% {
            box-shadow: var(--shadow-lg);
        }

        50% {
            box-shadow: 0 8px 40px rgba(141, 198, 63, 0.6);
        }
    }

    .support-button:hover {
        box-shadow: 0 12px 45px rgba(141, 198, 63, 0.7);
        animation: none;
    }

    /* Modal System */
    .modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.6);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        display: flex;
        justify-content: center;
        align-items: center;
        z-index: 10000;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s, visibility 0.3s;
    }

    .modal-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    .modal {
        background: white;
        border-radius: 25px;
        padding: 2.5rem 2rem;
        max-width: 450px;
        width: 90%;
        max-height: 90vh;
        overflow-y: auto;
        box-shadow: var(--shadow-xl);
        transform: scale(0.9) translateY(30px);
        transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        position: relative;
    }

    .modal-overlay.active .modal {
        transform: scale(1) translateY(0);
    }

    .modal::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 5px;
        background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
    }

    .modal-close {
        position: absolute;
        top: 15px;
        right: 15px;
        background: transparent;
        border: none;
        font-size: 1.5rem;
        color: var(--gray-text);
        cursor: pointer;
        width: 35px;
        height: 35px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        transition: var(--transition);
        z-index: 10;
    }

    .modal-close:hover {
        background: var(--light-bg);
        color: var(--primary);
        transform: rotate(90deg);
    }

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

    .modal-icon {
        width: 80px;
        height: 80px;
        margin: 0 auto 1rem;
        background: linear-gradient(135deg, var(--secondary), #9DD14E);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2.5rem;
        color: white;
        box-shadow: var(--shadow-md);
        animation: heartBeat 1.5s ease-in-out infinite;
    }

    @keyframes heartBeat {

        0%,
        100% {
            transform: scale(1);
        }

        10%,
        30% {
            transform: scale(0.9);
        }

        20%,
        40% {
            transform: scale(1.1);
        }
    }

    .modal-header h3 {
        color: var(--primary);
        font-size: 1.8rem;
        font-weight: 900;
        margin-bottom: 0.5rem;
    }

    .modal-header p {
        color: var(--gray-text);
        font-size: 1rem;
    }

    /* Form Groups */
    .form-group {
        margin: 1.5rem 0;
    }

    .form-group label {
        display: block;
        color: var(--dark-text);
        font-weight: 600;
        margin-bottom: 0.8rem;
        font-size: 1rem;
    }

    .form-group label i {
        color: var(--secondary);
        margin-right: 0.3rem;
    }

    .form-group.error .form-input {
        border-color: var(--error-color);
    }

    .form-group.success .form-input {
        border-color: var(--success-color);
    }

    .form-input {
        width: 100%;
        padding: 14px 18px;
        font-size: 1rem;
        border: 2px solid var(--light-bg);
        border-radius: 12px;
        outline: none;
        transition: var(--transition);
        color: var(--dark-text);
        font-family: inherit;
    }

    .form-input:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(91, 194, 231, 0.1);
    }

    .form-input::placeholder {
        color: var(--medium-gray);
    }

    .form-input:disabled {
        background-color: var(--light-bg);
        cursor: not-allowed;
        opacity: 0.6;
    }

    .error-message {
        color: var(--error-color);
        font-size: 0.85rem;
        margin-top: 0.5rem;
        display: none;
        animation: slideDown 0.3s ease;
    }

    .form-group.error .error-message {
        display: block;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }

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

    /* Amount Input Specific Styles */
    .amount-input-wrapper {
        position: relative;
    }

    .currency-symbol {
        position: absolute;
        left: 20px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--primary);
        font-size: 1.5rem;
        font-weight: 700;
        pointer-events: none;
    }

    .amount-input {
        padding-left: 50px;
        font-size: 1.8rem;
        font-weight: 700;
        text-align: center;
        color: var(--primary);
    }

    /* Quick Amount Buttons */
    .quick-amounts {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0.8rem;
        margin: 1.5rem 0;
    }

    .quick-amount-btn {
        padding: 12px;
        border: 2px solid var(--light-bg);
        background: white;
        border-radius: 12px;
        cursor: pointer;
        transition: var(--transition);
        font-weight: 600;
        color: var(--gray-text);
        font-size: 1rem;
        font-family: inherit;
    }

    .quick-amount-btn:hover {
        border-color: var(--accent);
        color: var(--primary);
        transform: translateY(-2px);
        box-shadow: var(--shadow-sm);
    }

    .quick-amount-btn.active {
        border-color: var(--secondary);
        background: linear-gradient(135deg, var(--secondary), #9DD14E);
        color: white;
        box-shadow: var(--shadow-md);
    }

    /* Modal Footer */
    .modal-footer {
        display: flex;
        gap: 1rem;
        margin-top: 2rem;
    }

    .modal-btn {
        flex: 1;
        padding: 15px 20px;
        border: none;
        border-radius: 12px;
        font-weight: 700;
        font-size: 1rem;
        cursor: pointer;
        transition: var(--transition-bounce);
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-family: inherit;
    }

    .modal-btn:disabled {
        opacity: 0.6;
        cursor: not-allowed;
    }

    .modal-btn-primary {
        background: linear-gradient(135deg, var(--secondary), #9DD14E);
        color: white;
        box-shadow: 0 6px 20px rgba(141, 198, 63, 0.4);
    }

    .modal-btn-primary:hover:not(:disabled) {
        transform: translateY(-3px);
        box-shadow: 0 10px 30px rgba(141, 198, 63, 0.5);
    }

    .modal-btn-secondary {
        background: var(--light-bg);
        color: var(--gray-text);
    }

    .modal-btn-secondary:hover:not(:disabled) {
        background: var(--lighter-bg);
        color: var(--primary);
    }

    /* Loading Spinner for Button */
    .btn-spinner {
        display: none;
        width: 16px;
        height: 16px;
        border: 2px solid rgba(255, 255, 255, 0.3);
        border-top-color: white;
        border-radius: 50%;
        animation: spin 0.6s linear infinite;
    }

    .modal-btn.loading .btn-spinner {
        display: inline-block;
    }

    .modal-btn.loading .btn-text {
        display: none;
    }

    /* Success Modal Specific Styles */
    .success-modal {
        text-align: center;
        padding: 3rem 2rem;
        max-width: 500px;
    }

    .success-icon-wrapper {
        position: relative;
        width: 120px;
        height: 120px;
        margin: 0 auto 2rem;
    }

    .success-icon {
        width: 120px;
        height: 120px;
        background: linear-gradient(135deg, var(--secondary), #9DD14E);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 4rem;
        color: white;
        box-shadow: var(--shadow-lg);
        animation: successPop 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }

    @keyframes successPop {
        0% {
            transform: scale(0);
            opacity: 0;
        }

        50% {
            transform: scale(1.2);
        }

        100% {
            transform: scale(1);
            opacity: 1;
        }
    }

    .success-confetti {
        position: absolute;
        top: 50%;
        left: 50%;
        width: 10px;
        height: 10px;
        transform: translate(-50%, -50%);
    }

    .confetti-piece {
        position: absolute;
        width: 8px;
        height: 8px;
        background: var(--accent);
        animation: confetti 1s ease-out forwards;
    }

    @keyframes confetti {
        0% {
            transform: translate(0, 0) rotate(0deg);
            opacity: 1;
        }

        100% {
            transform: translate(var(--tx), var(--ty)) rotate(360deg);
            opacity: 0;
        }
    }

    .success-amount {
        font-size: 2.5rem;
        font-weight: 900;
        color: var(--secondary);
        margin: 1rem 0;
        text-shadow: 0 2px 10px rgba(141, 198, 63, 0.2);
    }

    .success-message {
        color: var(--gray-text);
        font-size: 1.1rem;
        line-height: 1.7;
        margin: 1.5rem 0;
    }

    .payment-id {
        background: var(--light-bg);
        padding: 12px 20px;
        border-radius: 10px;
        font-size: 0.85rem;
        color: var(--gray-text);
        font-family: 'Courier New', monospace;
        margin: 1.5rem 0;
        word-break: break-all;
    }

    /* Header */
    header {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
        box-shadow: 0 2px 20px rgba(34, 168, 141, 0.08);
        animation: slideDown 0.8s cubic-bezier(0.16, 1, 0.3, 1);
        border-bottom: 1px solid rgba(34, 168, 141, 0.08);
    }

    @keyframes slideDown {
        from {
            transform: translateY(-100%);
            opacity: 0;
        }

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

    nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1200px;
        margin: 0 auto;
        padding: 1rem 2rem;
    }

    .logo {
        display: flex;
        align-items: center;
        transition: transform 0.3s ease;
        filter: drop-shadow(0 2px 8px rgba(34, 168, 141, 0.15));
        cursor: pointer;
    }

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

    .logo img {
        height: 55px;
        width: auto;
    }

    .nav-links {
        display: flex;
        list-style: none;
        gap: 2.5rem;
        align-items: center;
    }

    .nav-links a {
        color: var(--dark-text);
        text-decoration: none;
        font-weight: 600;
        font-size: 0.95rem;
        position: relative;
        transition: var(--transition);
        letter-spacing: 0.3px;
        padding: 8px 0;
    }

    .nav-links a::before {
        content: '';
        position: absolute;
        width: 0;
        height: 3px;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        background: linear-gradient(90deg, var(--primary), var(--accent));
        transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-radius: 3px;
    }

    .nav-links a:hover {
        color: var(--primary);
    }

    .nav-links a:hover::before {
        width: 100%;
    }

    /* Hamburger Menu */
    .hamburger {
        display: none;
        flex-direction: column;
        cursor: pointer;
        padding: 0;
        border: none;
        background: transparent;
        transition: var(--transition);
    }

    .hamburger span {
        width: 26px;
        height: 2px;
        background: var(--primary);
        margin: 4px 0;
        transition: var(--transition-bounce);
        border-radius: 2px;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
        transform: translateX(20px);
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    /* Hero Section */
    .hero {
        background: linear-gradient(135deg,
                rgba(34, 168, 141, 0.95) 0%,
                rgba(91, 194, 231, 0.95) 50%,
                rgba(141, 198, 63, 0.95) 100%);
        padding: 120px 2rem 80px;
        text-align: center;
        color: var(--light-text);
        margin-top: 75px;
        position: relative;
        overflow: hidden;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
        animation: moveBackground 40s linear infinite;
    }

    @keyframes moveBackground {
        from {
            transform: translateX(0) translateY(0);
        }

        to {
            transform: translateX(100px) translateY(100px);
        }
    }

    .hero-content {
        max-width: 900px;
        margin: 0 auto;
        position: relative;
        z-index: 1;
        animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1);
    }

    @keyframes heroFadeIn {
        from {
            opacity: 0;
            transform: translateY(40px);
        }

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

    .hero h1 {
        font-size: clamp(2.2rem, 5vw, 3.8rem);
        margin-bottom: 1rem;
        font-weight: 900;
        line-height: 1.1;
        text-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
        letter-spacing: -1.5px;
    }

    .hero p {
        font-size: clamp(1rem, 2.5vw, 1.3rem);
        margin-bottom: 2rem;
        opacity: 0.98;
        font-weight: 400;
        max-width: 700px;
        margin-left: auto;
        margin-right: auto;
        text-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
    }

    /* Buttons */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 14px 32px;
        margin: 8px;
        background: var(--secondary);
        color: var(--light-text);
        text-decoration: none;
        border-radius: 50px;
        font-weight: 700;
        font-size: 1rem;
        transition: var(--transition-bounce);
        box-shadow: 0 8px 25px rgba(141, 198, 63, 0.4);
        border: none;
        cursor: pointer;
        position: relative;
        overflow: hidden;
        letter-spacing: 0.5px;
        font-family: inherit;
    }

    .btn::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 0.7s;
    }

    .btn:hover::before {
        left: 100%;
    }

    .btn:hover {
        transform: translateY(-4px) scale(1.05);
        box-shadow: 0 12px 35px rgba(141, 198, 63, 0.5);
    }

    .btn:active {
        transform: translateY(-2px) scale(1.02);
    }

    .btn-primary {
        background: linear-gradient(135deg, var(--secondary) 0%, #9DD14E 100%);
    }

    .btn-secondary {
        background: transparent;
        border: 2px solid var(--light-text);
        box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
    }

    .btn-secondary:hover {
        background: rgba(255, 255, 255, 0.15);
        border-color: white;
    }

    /* Sections */
    section {
        padding: clamp(50px, 8vw, 85px) 2rem;
        position: relative;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        position: relative;
        z-index: 1;
    }

    .section-title {
        text-align: center;
        font-size: clamp(2rem, 4.5vw, 2.8rem);
        margin-bottom: 2.8rem;
        color: var(--primary);
        position: relative;
        font-weight: 900;
        letter-spacing: -1px;
        padding-bottom: 1.2rem;
    }

    .section-subtitle {
        text-align: center;
        font-size: clamp(0.95rem, 1.8vw, 1.1rem);
        color: var(--gray-text);
        margin-bottom: 3rem;
        max-width: 750px;
        margin-left: auto;
        margin-right: auto;
        line-height: 1.6;
    }

    .section-title::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 100px;
        height: 5px;
        background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
        border-radius: 5px;
        animation: pulseWidth 2s ease-in-out infinite;
    }

    @keyframes pulseWidth {

        0%,
        100% {
            width: 100px;
        }

        50% {
            width: 120px;
        }
    }

    /* Why Choose Us Section */
    .why-choose {
        background: var(--light-bg);
    }

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

    .reason-card {
        background: white;
        padding: 2.2rem 2rem;
        border-radius: 25px;
        box-shadow: var(--shadow-sm);
        transition: var(--transition-bounce);
        border: 2px solid transparent;
        position: relative;
        overflow: hidden;
    }

    .reason-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 5px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        transform: scaleX(0);
        transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .reason-card:hover::before {
        transform: scaleX(1);
    }

    .reason-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-colored);
        border-color: var(--accent);
    }

    .reason-icon {
        width: 70px;
        height: 70px;
        margin: 0 auto 1.3rem;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        border-radius: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2.2rem;
        box-shadow: var(--shadow-md);
        transition: var(--transition-bounce);
        color: white;
    }

    .reason-card:hover .reason-icon {
        transform: scale(1.1) rotate(5deg);
        box-shadow: var(--shadow-xl);
    }

    .reason-card h3 {
        color: var(--primary);
        font-size: 1.3rem;
        margin-bottom: 0.8rem;
        font-weight: 800;
        text-align: center;
    }

    .reason-card p {
        color: var(--gray-text);
        line-height: 1.6;
        font-size: 0.98rem;
        text-align: center;
    }

    /* Learning Topics Section */
    .learning-topics {
        background: white;
    }

    .topics-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2.2rem;
    }

    .topic-card {
        background: linear-gradient(135deg, white 0%, var(--lighter-bg) 100%);
        padding: 2.5rem 2rem;
        border-radius: 25px;
        box-shadow: var(--shadow-sm);
        transition: var(--transition-bounce);
        border: 2px solid transparent;
        position: relative;
        overflow: hidden;
    }

    .topic-card::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        border-radius: 50%;
        background: radial-gradient(circle, var(--accent) 0%, var(--primary) 100%);
        opacity: 0;
        transform: translate(-50%, -50%);
        transition: width 0.7s, height 0.7s, opacity 0.7s;
        z-index: 0;
    }

    .topic-card:hover::after {
        width: 500px;
        height: 500px;
        opacity: 0.08;
    }

    .topic-card:hover {
        transform: translateY(-12px) scale(1.02);
        box-shadow: var(--shadow-xl);
        border-color: var(--accent);
    }

    .topic-number {
        position: absolute;
        top: 20px;
        right: 20px;
        font-size: 4rem;
        font-weight: 900;
        color: var(--primary);
        opacity: 0.1;
        line-height: 1;
    }

    .topic-icon {
        width: 75px;
        height: 75px;
        margin: 0 auto 1.3rem;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        border-radius: 22px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2.5rem;
        box-shadow: var(--shadow-md);
        transition: var(--transition-bounce);
        position: relative;
        z-index: 1;
        color: white;
    }

    .topic-card:hover .topic-icon {
        transform: scale(1.15) rotate(-5deg);
        box-shadow: var(--shadow-xl);
    }

    .topic-card h3 {
        color: var(--primary);
        font-size: 1.4rem;
        margin-bottom: 0.8rem;
        font-weight: 800;
        text-align: center;
        position: relative;
        z-index: 1;
    }

    .topic-card p {
        color: var(--gray-text);
        line-height: 1.7;
        font-size: 0.98rem;
        text-align: center;
        position: relative;
        z-index: 1;
    }

    /* About Section */
    .about {
        background: var(--light-bg);
    }

    .about-content {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 2.5rem;
        align-items: start;
    }

    .about-column {
        background: white;
        padding: 2.5rem 2.2rem;
        border-radius: 25px;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        border: 2px solid transparent;
    }

    .about-column:hover {
        box-shadow: var(--shadow-lg);
        border-color: var(--accent);
        transform: translateY(-5px);
    }

    .about-column h3 {
        color: var(--primary);
        font-size: clamp(1.5rem, 3vw, 2rem);
        margin-bottom: 1.3rem;
        font-weight: 900;
        letter-spacing: -0.5px;
        position: relative;
        padding-bottom: 0.8rem;
    }

    .about-column h3::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 60px;
        height: 4px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        border-radius: 2px;
    }

    .about-column p {
        font-size: 1rem;
        line-height: 1.7;
        margin-bottom: 1.3rem;
        color: var(--gray-text);
    }

    .about-column ul {
        list-style: none;
        padding: 0;
        margin: 1.5rem 0;
    }

    .about-column li {
        padding: 0.7rem 0;
        padding-left: 2.5rem;
        position: relative;
        font-size: 1rem;
        color: var(--dark-text);
        line-height: 1.6;
        transition: var(--transition);
    }

    .about-column li:hover {
        transform: translateX(5px);
        color: var(--primary);
    }

    .about-column li::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 24px;
        height: 24px;
        border: 2.5px solid var(--secondary);
        border-radius: 50%;
        background: transparent;
        transition: var(--transition);
    }

    .about-column li::after {
        content: '\f00c';
        font-family: 'Font Awesome 6 Free';
        font-weight: 900;
        position: absolute;
        left: 5.5px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--secondary);
        font-size: 0.7rem;
        z-index: 1;
        transition: var(--transition);
    }

    .about-column li:hover::before {
        transform: translateY(-50%) scale(1.1);
        border-color: var(--primary);
    }

    .about-column li:hover::after {
        color: var(--primary);
    }

    /* Benefits Section */
    .benefits {
        background: white;
    }

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

    .benefit-item {
        background: linear-gradient(135deg, var(--lighter-bg) 0%, white 100%);
        padding: 2rem 1.5rem;
        border-radius: 20px;
        box-shadow: var(--shadow-soft);
        transition: var(--transition-bounce);
        border: 2px solid transparent;
        text-align: center;
    }

    .benefit-item:hover {
        transform: translateY(-6px) scale(1.02);
        box-shadow: var(--shadow-md);
        border-color: var(--accent);
    }

    .benefit-icon {
        font-size: 3rem;
        margin-bottom: 1rem;
        transition: var(--transition-bounce);
        background: linear-gradient(135deg, var(--primary), var(--accent));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        filter: drop-shadow(0 2px 8px rgba(34, 168, 141, 0.2));
    }

    .benefit-item:hover .benefit-icon {
        transform: scale(1.15) rotate(8deg);
        filter: drop-shadow(0 4px 15px rgba(34, 168, 141, 0.35));
    }

    .benefit-item h4 {
        color: var(--primary);
        font-size: 1.2rem;
        margin-bottom: 0.6rem;
        font-weight: 800;
    }

    .benefit-item p {
        color: var(--gray-text);
        font-size: 0.95rem;
        line-height: 1.6;
    }

    /* CTA Section */
    .cta-section {
        background: linear-gradient(135deg,
                var(--primary) 0%,
                var(--accent) 50%,
                var(--secondary) 100%);
        color: var(--light-text);
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        animation: moveBackground 50s linear infinite;
    }

    .cta-content {
        max-width: 750px;
        margin: 0 auto;
        position: relative;
        z-index: 1;
    }

    .cta-section h2 {
        color: white !important;
    }

    .cta-section h2::after {
        background: white;
    }

    .cta-section p {
        font-size: 1.1rem;
        margin-bottom: 1.8rem;
        opacity: 0.98;
        line-height: 1.7;
        text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .support-note {
        font-size: 1rem;
        margin-top: 1.5rem;
        opacity: 0.92;
        font-style: italic;
        animation: gentlePulse 3s ease-in-out infinite;
    }

    @keyframes gentlePulse {

        0%,
        100% {
            opacity: 0.92;
        }

        50% {
            opacity: 1;
        }
    }

    /* Footer */
    footer {
        background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
        color: var(--light-text);
        padding: 3rem 2rem 1.5rem;
        position: relative;
    }

    footer::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
    }

    .footer-content {
        max-width: 1200px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2.5rem;
        margin-bottom: 2rem;
    }

    .footer-section h3 {
        font-size: 1.3rem;
        margin-bottom: 1.2rem;
        font-weight: 900;
    }

    .footer-section p,
    .footer-section a {
        color: rgba(255, 255, 255, 0.85);
        text-decoration: none;
        line-height: 2;
        font-size: 0.95rem;
        display: block;
        transition: var(--transition);
    }

    .footer-section a:hover {
        color: var(--accent);
        transform: translateX(5px);
    }

    .social-links {
        display: flex;
        gap: 1.5rem;
        margin-top: 1.5rem;
    }

    .social-link {
        width: 48px;
        height: 48px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition-bounce);
        font-size: 1.3rem;
        color: white;
    }

    .social-link:hover {
        background: var(--accent);
        transform: translateY(-5px) scale(1.15);
        box-shadow: 0 8px 25px rgba(91, 194, 231, 0.4);
    }

    .footer-bottom {
        text-align: center;
        padding-top: 1.8rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        opacity: 0.85;
    }

    .footer-bottom p {
        margin: 0.5rem 0;
    }

    /* Ad Banner */
    .ad-banner {
        background: var(--light-bg);
        padding: 2rem 0;
        text-align: center;
    }

    .ad-banner .container {
        max-width: 728px;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
        .nav-links {
            position: fixed;
            right: -100%;
            top: 75px;
            flex-direction: column;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            width: 100%;
            text-align: center;
            transition: right 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 3rem 0;
            box-shadow: var(--shadow-lg);
            gap: 2rem;
            border-top: 2px solid rgba(34, 168, 141, 0.1);
        }

        .nav-links.active {
            right: 0;
        }

        .hamburger {
            display: flex;
        }

        .hero {
            padding: 110px 1.5rem 70px;
        }

        .about-content,
        .footer-content {
            grid-template-columns: 1fr;
        }

        .reasons-grid,
        .topics-grid,
        .benefits-grid {
            grid-template-columns: 1fr;
        }

        section {
            padding: 45px 1.5rem;
        }

        .btn {
            padding: 13px 28px;
            font-size: 0.95rem;
        }

        .floating-btn {
            width: 45px;
            height: 45px;
            bottom: 20px;
            right: 20px;
        }

        .support-button {
            width: 50px;
            height: 50px;
            bottom: 80px;
            right: 20px;
            font-size: 1.2rem;
        }

        .about-column {
            padding: 2rem 1.5rem;
        }

        .modal {
            padding: 2rem 1.5rem;
        }

        .quick-amounts {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    /* Reduced Motion */
    @media (prefers-reduced-motion: reduce) {

        *,
        *::before,
        *::after {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
        }
    }