:root {
    --gold: #d4af37;
    --dark: #1a1a1a;
    --light: #f8f8f8;
    --transition: all 0.6s ease;
    --green: #2d5a27;
    --light-green: #e8f5e8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.8;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    z-index: 1000;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.header.scrolled {
    padding: 15px 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--gold);
    text-decoration: none;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: var(--dark);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 1px;
    transition: var(--transition);
    position: relative;
}

.nav-links a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: var(--transition);
}

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

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

.extended-nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.extended-nav a {
    color: var(--dark);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    padding: 5px 10px;
    border-radius: 4px;
}

.extended-nav a:hover {
    color: var(--gold);
    background: rgba(212, 175, 55, 0.1);
}

.mobile-menu-toggle {
    display: none;
    background: var(--gold);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 4px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    background: #c19d34;
}

.mobile-sidebar {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100%;
    background: white;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    z-index: 1001;
    transition: var(--transition);
    overflow-y: auto;
}

.mobile-sidebar.active {
    right: 0;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #eee;
}

.sidebar-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
}

.sidebar-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--dark);
    transition: var(--transition);
}

.sidebar-close:hover {
    color: var(--gold);
}

.sidebar-content {
    padding: 20px;
}

.sidebar-links {
    list-style: none;
}

.sidebar-links li {
    margin-bottom: 15px;
}

.sidebar-links a {
    color: var(--dark);
    text-decoration: none;
    font-size: 18px;
    font-weight: 500;
    display: block;
    padding: 10px 0;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.sidebar-links a:hover {
    color: var(--gold);
    padding-left: 10px;
}

.efficacy-hero {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(0, 0, 0, .25), rgba(0, 0, 0, .75)),
        url("../img/photo-1544787219-7f47ccb76574.jpg");
    background-size: cover;
    background-position: center;
}

.efficacy-hero::after {
    content: "";
    position: absolute;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(201, 164, 76, .35), transparent 70%);
    animation: heroGlow 8s infinite alternate;
}

@keyframes heroGlow {

    from {
        transform: scale(.8);
        opacity: .3;
    }

    to {
        transform: scale(1.2);
        opacity: .8;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 72px;
    letter-spacing: 10px;
    font-weight: 600;
    background: linear-gradient(90deg, #fff, #d8b45a);
    -webkit-background-clip: text;
    color: transparent;
}



.hero-subtitle {
    font-size: 22px;
    letter-spacing: 5px;
    color: white;
    margin-top: 30px;
}

.efficacy-section {
    padding: 100px 0;
    background: white;
}

.section-title {


    font-size: 48px;

    color: #393939;
    letter-spacing: 6px;


    font-weight: 600;


    text-align: center;



    margin-bottom: 80px;


}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--gold);
}

.efficacy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.efficacy-card {
    background: rgba(255, 255, 255, .65);
    backdrop-filter: blur(20px);
    border-radius: 30px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, .5);
    box-shadow: 0 30px 80px rgba(0, 0, 0, .08);
    transition: all .6s cubic-bezier(.16, 1, .3, 1);
}

.efficacy-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 40px 100px rgba(0, 0, 0, .15);
}

.efficacy-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;


    margin-bottom: 30px;



    background:

        linear-gradient(135deg,
            #d8b55b,
            #a87b25);



    color: white;


    font-size: 32px;


    box-shadow:

        0 20px 40px rgba(201, 164, 76, .35);



}

.efficacy-card,
.section-title,
.synergy-content {


    opacity: 0;


    filter: blur(8px);


    transform:
        translateY(50px);



    transition:

        1s cubic-bezier(.16, 1, .3, 1);


}



.show {


    opacity: 1;


    filter: blur(0);


    transform: none;


}

.efficacy-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark);
}

.efficacy-desc {
    font-size: 16px;
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
}

.efficacy-benefits {
    list-style: none;
}

.efficacy-benefits li {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: 15px;
    color: #555;
}

.efficacy-benefits li:before {
    content: '✓';
    color: var(--green);
    font-weight: bold;
    margin-right: 12px;
    font-size: 16px;
}

.synergy-section {


    padding: 150px 0;

    background-color: var(--light-green);


    color: white;


}

.synergy-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.synergy-content {
    padding: 40px;
}

.synergy-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--green);
}

.synergy-desc {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 30px;
    color: #444;
}

.synergy-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.highlight-item {
    background: white;
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.highlight-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 10px;
}

.highlight-text {
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

.synergy-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.synergy-diagram {
    width: 400px;
    height: 400px;
    position: relative;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1), transparent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.diagram-center {


    width: 160px;

    height: 160px;


    border-radius: 50%;


    display: flex;

    align-items: center;

    justify-content: center;



    background:

        radial-gradient(circle,
            #d8b55b,
            #987022);



    font-size: 20px;


    font-weight: bold;


    box-shadow:

        0 0 80px rgba(216, 181, 91, .6);



    animation:

        pulse 3s infinite;


}


@keyframes pulse {


    50% {

        transform: scale(1.08);

    }


}

.diagram-element {
    position: absolute;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #a87b25;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border: 3px solid var(--gold);
}

.diagram-element:nth-child(1) {
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
}

.diagram-element:nth-child(2) {
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
}

.diagram-element:nth-child(3) {
    top: 50%;
    left: 20px;
    transform: translateY(-50%);
}

.diagram-element:nth-child(4) {
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
}

.footer {
    background: var(--dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 50px;
}

.footer-col h3 {
    font-size: 20px;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--gold);
}

.footer-col p {
    margin-bottom: 15px;
    color: #aaa;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
    font-size: 14px;
    color: #777;
}

@media (max-width: 992px) {
    .synergy-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .synergy-highlights {
        grid-template-columns: 1fr;
    }

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

    .extended-nav {
        display: none;
    }

    .efficacy-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .footer-container {
        grid-template-columns: 1fr;
    }

    .synergy-diagram {
        width: 300px;
        height: 300px;
    }

    .diagram-center {
        width: 150px;
        height: 150px;
        font-size: 16px;
    }

    .diagram-element {
        width: 100px;
        height: 100px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .mobile-sidebar {
        width: 280px;
        right: -280px;
    }

    .efficacy-card {
        padding: 30px 20px;
    }
}