/* =========================
   GOOGLE FONT
========================= */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* =========================
   ROOT VARIABLES
========================= */
:root{
    --primary:#0f766e;
    --primary-dark:#115e59;
    --accent:#14b8a6;
    --light:#f8fafc;
    --white:#ffffff;
    --text:#475569;
    --heading:#0f172a;
    --border:#e2e8f0;

    --shadow:
        0 10px 30px rgba(15,118,110,.08);

    --radius:20px;
}

/* =========================
   RESET
========================= */

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Poppins',sans-serif;
    background:#f8fafc;
    color:var(--text);
    line-height:1.8;
}

/* =========================
   CONTAINER
========================= */

.container{
    width:min(1200px,90%);
    margin:auto;
}

/* =========================
   TOP NAVIGATION
========================= */

.topbar{
    position:sticky;
    top:0;
    z-index:999;
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(10px);
    box-shadow:0 2px 15px rgba(0,0,0,.05);
}

.nav{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:18px 0;
}

.brand{
    text-decoration:none;
    font-size:1.5rem;
    font-weight:700;
    color:var(--primary);
}

.nav-links{
    display:flex;
    gap:24px;
    flex-wrap:wrap;
}

.nav-links a{
    text-decoration:none;
    color:var(--heading);
    font-weight:500;
    transition:.3s;
}

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

/* =========================
   HERO SECTION
========================= */

.hero{
    position:relative;
}

.hero img{
    width:100%;
    height:350px;
    object-fit:cover;
    display:block;
}

.hero-content{
    max-width:800px;
    margin:auto;
    text-align:center;
    padding:60px 20px;
}

.eyebrow{
    display:inline-block;
    background:#ccfbf1;
    color:var(--primary);
    padding:8px 18px;
    border-radius:50px;
    font-size:.85rem;
    font-weight:600;
    margin-bottom:20px;
}

.hero-content h1{
    font-size:3rem;
    color:var(--heading);
    margin-bottom:20px;
    line-height:1.2;
}

.hero-content p{
    font-size:1.1rem;
    max-width:700px;
    margin:auto auto 30px;
}

.btn{
    display:inline-block;
    text-decoration:none;
    background:var(--primary);
    color:white;
    padding:14px 28px;
    border-radius:50px;
    font-weight:600;
    transition:.3s;
}

.btn:hover{
    background:var(--primary-dark);
    transform:translateY(-2px);
}

/* =========================
   ARTICLE SECTION
========================= */

.article-wrapper{
    margin-top:20px;
    margin-bottom:80px;
}

article{
    background:white;
    border-radius:25px;
    padding:50px;
    box-shadow:var(--shadow);
}

article section{
    margin-bottom:60px;
}

article h2{
    color:var(--heading);
    margin-bottom:20px;
    font-size:2rem;
    position:relative;
}

article h2::after{
    content:"";
    display:block;
    width:70px;
    height:4px;
    background:var(--primary);
    margin-top:10px;
    border-radius:100px;
}

article p{
    margin-bottom:20px;
}

/* =========================
   HIGHLIGHT BOX
========================= */

.highlight{
    margin-top:25px;
    background:#ecfdf5;
    border-left:5px solid #22c55e;
    padding:22px;
    border-radius:12px;
    font-weight:500;
}

/* =========================
   LISTS
========================= */

.info-list{
    padding-left:22px;
}

.info-list li{
    margin-bottom:15px;
}

/* =========================
   PRODUCT BOX
========================= */

.product-box{
    margin-top:30px;
    background:#f0fdfa;
    border:1px solid #ccfbf1;
    border-radius:18px;
    padding:30px;
}

.product-box h3{
    color:var(--primary);
    margin-bottom:12px;
}

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

.faq-section{
    width:min(1200px,90%);
    margin:80px auto;
}

#questions{
    text-align:center;
    color:var(--heading);
    margin-bottom:40px;
    font-size:2.2rem;
}

.faq{
    width:100%;
}

details{
    background:white;
    border-radius:15px;
    margin-bottom:18px;
    overflow:hidden;
    box-shadow:var(--shadow);
}

summary{
    padding:22px;
    cursor:pointer;
    font-weight:600;
    color:var(--heading);
    list-style:none;
}

summary::-webkit-details-marker{
    display:none;
}

details p{
    padding:0 22px 22px;
}

/* =========================
   RELATED TOPICS
========================= */

.related-topics{
    width:min(1200px,90%);
    margin:80px auto;
    background:white;
    border-radius:25px;
    padding:50px;
    box-shadow:var(--shadow);
}

.related-topics h2{
    text-align:center;
    color:var(--heading);
    margin-bottom:35px;
}

.related-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:18px;
}

.related-grid a{
    text-decoration:none;
    background:#f8fafc;
    border:1px solid var(--border);
    color:var(--heading);
    padding:18px;
    border-radius:15px;
    transition:.3s;
    font-weight:500;
}

.related-grid a:hover{
    background:var(--primary);
    color:white;
    transform:translateY(-3px);
}

/* =========================
   HOME BUTTON
========================= */

.home-btn-wrap{
    width:min(1200px,90%);
    margin:40px auto 80px;
    text-align:center;
}

.home-btn{
    display:inline-block;
    text-decoration:none;
    background:var(--primary);
    color:white;
    padding:15px 35px;
    border-radius:50px;
    font-weight:600;
    transition:.3s;
}

.home-btn:hover{
    background:var(--primary-dark);
}

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

.footer{
    background:#0f172a;
    color:white;
    padding:50px 20px;
    text-align:center;
}

.footer p{
    margin-bottom:10px;
}

/* =========================
   LINKS INSIDE ARTICLE
========================= */

article a{
    color:var(--primary);
    font-weight:600;
}

article a:hover{
    color:var(--primary-dark);
}

/* =========================
   RESPONSIVE
========================= */

@media(max-width:992px){

    .hero-content h1{
        font-size:2.4rem;
    }

    article{
        padding:35px;
    }

    .related-topics{
        padding:35px;
    }
}

@media(max-width:768px){

    .nav{
        flex-direction:column;
        gap:15px;
    }

    .nav-links{
        justify-content:center;
    }

    .hero img{
        height:320px;
    }

    .hero-content{
        padding:40px 20px;
    }

    .hero-content h1{
        font-size:2rem;
    }

    article{
        padding:25px;
    }

    article h2{
        font-size:1.6rem;
    }

    #questions{
        font-size:1.8rem;
    }

    .related-topics{
        padding:25px;
    }
}

@media(max-width:480px){

    .hero-content h1{
        font-size:1.7rem;
    }

    .btn,
    .home-btn{
        width:100%;
        text-align:center;
    }

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