/* =========================
GENERAL
========================= */

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

body{
    font-family:Arial, Helvetica, sans-serif;
    background:#f4f7fb;
    color:#111827;
    line-height:1.7;
}

.container{
    width:100%;
    max-width:900px;
    margin:auto;
    padding:0 20px;
}

/* =========================
HEADER
========================= */

.site-header{
    background:#2563eb;
    padding:18px 0;
    box-shadow:0 2px 10px rgba(0,0,0,0.08);
}

.site-header .container{
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.logo a{
    color:#fff;
    text-decoration:none;
    font-size:28px;
    font-weight:bold;
}

.main-menu a{
    color:#fff;
    text-decoration:none;
    margin-left:18px;
    font-size:15px;
}

.main-menu a:hover{
    opacity:0.8;
}

/* =========================
MAIN CONTENT
========================= */

.main-content{
    padding:50px 0;
}

.page-title{
    font-size:38px;
    margin-bottom:15px;
    text-align:center;
}

.intro-text{
    font-size:17px;
    text-align:center;
    margin-bottom:35px;
    color:#4b5563;
}

.breadcrumb{
    margin-bottom:25px;
    font-size:14px;
    color:#6b7280;
}

.breadcrumb a{
    color:#2563eb;
    text-decoration:none;
}

/* =========================
CALCULATOR BOX
========================= */

.calculator-box{
    background:#fff;
    padding:35px;
    border-radius:18px;
    border:1px solid #dbeafe;
    box-shadow:
    0 10px 25px rgba(37,99,235,0.08),
    0 2px 8px rgba(0,0,0,0.05);
    margin-bottom:40px;
    max-width:650px;
    margin-left:auto;
    margin-right:auto;
}

.calculator-box label{
    display:block;
    margin-bottom:8px;
    font-weight:bold;
    font-size:15px;
}

.calculator-box input{
    width:100%;
    padding:15px;
    border:1px solid #d1d5db;
    border-radius:10px;
    margin-bottom:22px;
    font-size:16px;
}

.calculator-box input:focus{
    outline:none;
    border-color:#2563eb;
}

.calculator-box button{
    width:100%;
    background:#2563eb;
    color:#fff;
    border:none;
    padding:16px;
    border-radius:10px;
    cursor:pointer;
    font-size:17px;
    font-weight:bold;
    transition:0.3s;
}

.calculator-box button:hover{
    background:#1d4ed8;
}

.result-box{
    margin-top:25px;
    background:#eff6ff;
    border:1px solid #bfdbfe;
    padding:22px;
    border-radius:12px;
    font-size:22px;
    font-weight:bold;
    text-align:center;
}

/* =========================
CONTENT IMAGE SECTION
========================= */

.content-image-section{
    display:flex;
    gap:35px;
    align-items:center;
    background:#fff;
    padding:35px;
    border-radius:18px;
    margin-bottom:35px;
    box-shadow:0 2px 10px rgba(0,0,0,0.05);
}

.content-side{
    flex:1;
}

.image-side{
    flex:1;
}

.image-side img{
    width:100%;
    border-radius:14px;
}

/* =========================
CONTENT SECTION
========================= */

.content-section{
    background:#fff;
    padding:35px;
    border-radius:18px;
    margin-bottom:35px;
    box-shadow:0 2px 10px rgba(0,0,0,0.05);
}

.content-section h2{
    margin-bottom:18px;
    font-size:28px;
}

.content-section p{
    margin-bottom:15px;
}

/* =========================
FAQ
========================= */

.faq-item{
    border-bottom:1px solid #e5e7eb;
}

.faq-question{
    padding:20px 0;
    cursor:pointer;
    display:flex;
    justify-content:space-between;
    align-items:center;
    font-size:18px;
    font-weight:bold;
}

.faq-question span{
    font-size:26px;
    color:#2563eb;
}

.faq-answer{
    display:none;
    padding-bottom:20px;
    color:#4b5563;
}

/* =========================
RELATED LINKS
========================= */

.related-links a{
    display:inline-block;
    margin-right:12px;
    margin-bottom:12px;
    padding:10px 18px;
    background:#eff6ff;
    color:#2563eb;
    border-radius:8px;
    text-decoration:none;
    transition:0.3s;
}

.related-links a:hover{
    background:#dbeafe;
}

/* =========================
FOOTER
========================= */

.site-footer{
    background:#111827;
    color:#fff;
    padding:45px 0;
    margin-top:50px;
}

.footer-links{
    margin-bottom:18px;
}

.footer-links a{
    color:#fff;
    margin-right:20px;
    text-decoration:none;
}