:root {
    --accent: #00E5FF;
}

.nav-scrolled {
    box-shadow: 0 1px 0 #E5E9EC;
}

.hero-overlay {
    background: linear-gradient(135deg, rgba(0, 229, 255, .15) 0%, rgba(255, 255, 255, .85) 100%);
}

.nav-left {
    position: absolute;
    left: 30px;
}

.nav-logo {
    height: 45px;
}

.nav-right {
    position: absolute;
    right: 100px;

}

.nav-center {
    width: 80%;

}


/* Pricing Section */
.pricing {
    padding: 80px 0;
    background: linear-gradient(135deg, #00E5FF 0%, #001B44 100%);
    color: white;
}

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

.pricing-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s;
    transform-style: preserve-3d;
    position: relative;
}

.pricing-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s;
    border-radius: 15px;
}

.pricing-card:hover::after {
    opacity: 1;
}

.pricing-card:hover {
    transform: translateY(-5px) rotateX(5deg) scale(1.02);
    background: rgba(255, 255, 255, 0.2);
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}


/* ===========================
       Mega menu (desktop)
       - It visually overlaps nav bottom by using transform: translateY(-12px)
       - Positioning uses absolute below the nav
       =========================== */
.c4d-mega-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.04);
    display: none;
    z-index: 1150;
}

.c4d-mega {
    position: fixed;
    left: 50%;
    transform: translate(-50%, -12px);
    /* <- negative translate to overlap nav bottom */
    top: calc(var(--nav-height));
    /* anchor just below nav */
    width: min(1100px, 96%);
    background: #ffffff;
    border-radius: 14px;
    box-shadow: 0 18px 50px rgba(10, 20, 40, 0.08);
    border: 1px solid rgba(15, 23, 42, 0.04);
    padding: 18px;
    display: none;
    z-index: 1160;
    overflow: hidden;
}

.c4d-mega.open {
    display: block;
    top: 60px;
}

.c4d-nav-btn[aria-expanded="true"] > a {
    text-decoration: underline;
    text-decoration-color: #034b53;  /* 下划线颜色 */
    text-underline-offset: 10px;     /* 下划线与文字间距 */
    text-decoration-thickness: 3px;  /* 下划线粗细，可调大 */
    font-weight: 700;                /* 文字加粗，可选 */
}

/* Mega layout */
.c4d-mega-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: 1fr;
}

.c4d-mega-col {
    padding: 8px;
}

.c4d-mega h4 {
    margin: 0 0 6px 0;
    font-size: 14px
}

.c4d-mega p {
    margin: 0;
    color: var(--muted);
    font-size: 13px
}

.c4d-mega a.mega-item {
    display: block;
    padding: 10px;
    border-radius: 10px;
    color: var(--text);
}

.c4d-mega a.mega-item:hover {
    background: #f7fbff;
}

/* Right promo area */
.c4d-mega-promo {
    border-left: 1px solid rgba(15, 23, 42, 0.03);
    padding-left: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
    min-width: 240px;
}

.c4d-promo-ctitle {
    font-weight: 700;
    font-size: 15px
}

.c4d-promo-cta {
    margin-top: 6px;
    padding: 8px 12px;
    border-radius: 10px;
    background: linear-gradient(90deg, var(--accent), #4aa3ff);
    color: #fff;
    border: none;
    cursor: pointer;
}

/* ===========================
       Mobile overlay (full-screen) - shown when hamburger or mobile menu opened
       =========================== */
.c4d-mobile-overlay {
    position: fixed;
    inset: 0;
    background: #fff;
    z-index: 1300;
    display: none;
    flex-direction: column;
    padding-top: var(--nav-height);
    /* leave space under nav */
}

.c4d-mobile-overlay.open {
    display: flex;
}

.c4d-mobile-scroll {
    overflow: auto;
    padding: 18px;
    padding-top: 22px;
}

.c4d-mobile-section {
    border-bottom: 1px solid #f3f4f6;
    padding: 12px 0;
}

.c4d-mobile-section h3 {
    margin: 0 0 8px 0;
    font-size: 16px;
}

.c4d-mobile-link {
    display: block;
    padding: 10px 0;
    color: var(--text);
}

/* ===========================
         Desktop wide layout adjustments
         =========================== */
@media (min-width: 880px) {
    .c4d-mega-grid {
        grid-template-columns: repeat(3, 1fr) auto;
        /* 3 cols + promo */
        align-items: start;
    }

    .c4d-mega {
        padding: 20px;
    }

    .c4d-mega-col {
        padding: 6px 14px;
    }

    .c4d-nav-btn:not(.c4d-hamburger) {
        display: inline-flex;
        align-items: center;
        gap: 6px
    }

    .c4d-hamburger {
        display: none;
    }
}