/*==========================================================

ARTICLES HERO

==========================================================*/

body{

    font-family:'Inter',sans-serif;

    background:#F8FAFC;

}

.articles-hero{

    padding:100px 0;

    text-align:center;

    background:
    radial-gradient(circle at top right,#D8ECFF 0%,transparent 40%),
    radial-gradient(circle at bottom left,#EDF7FF 0%,transparent 30%),
    #F8FAFC;

}

.articles-hero .container{

    max-width:900px;

    margin:auto;

}

.articles-hero h1{

    font-size:58px;

    line-height:1.2;

    margin:25px 0;

    color:#0F172A;

}

.articles-hero p{

    font-size:20px;

    line-height:1.8;

    color:#64748B;

    margin-bottom:45px;

}

.article-search{

    max-width:700px;

    margin:auto;

    display:flex;

    align-items:center;

    gap:15px;

    background:#fff;

    padding:10px;

    border-radius:60px;

    box-shadow:0 18px 40px rgba(15,23,42,.08);

}

.article-search svg{

    width:22px;

    height:22px;

    color:#94A3B8;

    margin-left:15px;

}

.article-search input{

    flex:1;

    border:none;

    outline:none;

    font-size:16px;

    background:transparent;

}

.article-search button{

    padding:16px 34px;

    border:none;

    border-radius:40px;

    background:#0057D9;

    color:#fff;

    font-weight:600;

    cursor:pointer;

    transition:.3s;

}

.article-search button:hover{

    background:#0047B3;

}

/* section 2 */


.article-topics{

    margin-top:45px;

    display:flex;

    justify-content:center;

    flex-wrap:wrap;

    gap:16px;

}

.article-topics span{

    padding:12px 22px;

    background:#ffffff;

    border:1px solid #E2E8F0;

    border-radius:50px;

    font-weight:600;

    color:#334155;

    transition:.3s;

    cursor:default;

}

.article-topics span:hover{

    background:#0057D9;

    color:#ffffff;

    border-color:#0057D9;

}

/*==========================================================

FEATURED TECHNICAL GUIDE

==========================================================*/

.featured-guide{

    padding:110px 0;

    background:#ffffff;

}

.section-heading{

    text-align:center;

    max-width:760px;

    margin:0 auto 70px;

}

.section-heading h2{

    font-size:52px;

    margin:24px 0;

    color:#0F172A;

}

.section-heading p{

    font-size:18px;

    line-height:1.8;

    color:#64748B;

}

.featured-guide-card{

    display:grid;

    grid-template-columns:48% 52%;

    background:#F8FAFC;

    border-radius:32px;

    overflow:hidden;

    box-shadow:0 20px 60px rgba(15,23,42,.08);

    transition:.35s;

}

.featured-guide-card:hover{

    transform:translateY(-8px);

    box-shadow:0 35px 80px rgba(15,23,42,.12);

}

.featured-guide-image img{

    width:100%;

    height:100%;

    min-height:520px;

    object-fit:cover;

    display:block;

}

.featured-guide-content{

    padding:70px;

    display:flex;

    flex-direction:column;

    justify-content:center;

}

.guide-category{

    display:inline-block;

    width:max-content;

    padding:10px 20px;

    border-radius:999px;

    background:#EAF3FF;

    color:#0057D9;

    font-weight:700;

    margin-bottom:28px;

}

.featured-guide-content h3{

    font-size:42px;

    line-height:1.25;

    color:#0F172A;

    margin-bottom:25px;

}

.featured-guide-content p{

    font-size:18px;

    line-height:1.9;

    color:#64748B;

    margin-bottom:35px;

}

.guide-meta{

    display:flex;

    gap:30px;

    margin-bottom:40px;

    color:#64748B;

    font-weight:500;

}

.guide-meta span{

    display:flex;

    align-items:center;

    gap:8px;

}

.guide-btn{

    display:inline-flex;

    align-items:center;

    justify-content:center;

    width:max-content;

    padding:16px 34px;

    background:#0057D9;

    color:#ffffff;

    text-decoration:none;

    border-radius:50px;

    font-weight:700;

    transition:.3s;

}

.guide-btn:hover{

    background:#0047B3;

    transform:translateY(-2px);

}

/*==========================================================

ARTICLE CATEGORIES

==========================================================*/

.article-categories{

    padding:120px 0;

    background:#F8FAFC;

}

.article-category-grid{

    display:grid;

    grid-template-columns:repeat(4,1fr);

    gap:28px;

    margin-top:70px;

}

.article-category-card{

    background:#ffffff;

    border-radius:24px;

    padding:38px;

    text-align:center;

    box-shadow:0 15px 40px rgba(15,23,42,.07);

    transition:.35s;

    border:1px solid #E5E7EB;

}

.article-category-card:hover{

    transform:translateY(-8px);

    box-shadow:0 30px 60px rgba(15,23,42,.12);

    border-color:#0057D9;

}

.category-icon{

    width:72px;

    height:72px;

    margin:auto;

    border-radius:18px;

    background:#EAF3FF;

    display:flex;

    justify-content:center;

    align-items:center;

    margin-bottom:24px;

}

.category-icon svg{

    width:34px;

    height:34px;

    color:#0057D9;

}

.article-category-card h3{

    font-size:24px;

    color:#0F172A;

    margin-bottom:18px;

}

.article-category-card p{

    color:#64748B;

    line-height:1.8;

    font-size:15px;

}

/*==========================================================

LATEST ARTICLES

==========================================================*/

.latest-articles{

    padding:120px 0;

    background:#ffffff;

}

.articles-grid{

    display:grid;

    grid-template-columns:repeat(3,1fr);

    gap:35px;

    margin-top:70px;

}

.article-card{

    background:#fff;

    border-radius:24px;

    border:1px solid #E5E7EB;

    box-shadow:0 20px 45px rgba(15,23,42,.07);

    transition:.35s;

}

.article-card:hover{

    transform:translateY(-10px);

    box-shadow:0 35px 70px rgba(15,23,42,.12);

}

.article-card img{

    width:100%;

    height:250px;

    object-fit:cover;

}

.article-content{

    padding:30px;

}

.article-tag{

    display:inline-block;

    padding:8px 18px;

    border-radius:50px;

    background:#EAF3FF;

    color:#0057D9;

    font-weight:700;

    font-size:13px;

    margin-bottom:20px;

}

.article-content h3{

    font-size:28px;

    line-height:1.35;

    margin-bottom:18px;

    color:#0F172A;

}

.article-content p{

    color:#64748B;

    line-height:1.8;

    margin-bottom:25px;

}

.article-info{

    display:flex;

    justify-content:space-between;

    margin-bottom:28px;

    color:#64748B;

    font-size:14px;

}

.article-info span{

    display:flex;

    align-items:center;

    gap:8px;

}

.read-btn{

    display:inline-flex;

    align-items:center;

    text-decoration:none;

    color:#0057D9;

    font-weight:700;

    transition:.3s;

}

.read-btn:hover{

    gap:10px;

}

/*==========================================================

DOCUMENTATION CTA

==========================================================*/

.documentation-cta{

    padding:120px 0;

    background:#F8FAFC;

}

.documentation-box{

    background:linear-gradient(135deg,#0057D9,#007BFF);

    border-radius:32px;

    padding:80px;

    text-align:center;

    color:#ffffff;

    box-shadow:0 30px 70px rgba(0,87,217,.20);

}

.documentation-box h2{

    font-size:52px;

    margin:25px 0;

    line-height:1.2;

}

.documentation-box p{

    max-width:760px;

    margin:auto;

    font-size:19px;

    line-height:1.9;

    opacity:.95;

}

.documentation-buttons{

    display:flex;

    justify-content:center;

    gap:20px;

    margin-top:50px;

}

.documentation-buttons .btn{

    min-width:220px;

}

/*==========================================================

BREADCRUMB

==========================================================*/

.breadcrumb-section{

    padding:30px 0;

    background:#ffffff;

}

.breadcrumb{

    display:flex;

    align-items:center;

    gap:12px;

    font-size:15px;

}

.breadcrumb a{

    color:#0057D9;

    text-decoration:none;

}

.breadcrumb span{

    color:#64748B;

}

/*==========================================================

ARTICLE HEADER

==========================================================*/

.article-header{

    padding:40px 0 70px;

    text-align:center;

    background:#ffffff;

}

.article-header .container{

    max-width:900px;

    margin:auto;

}

.article-category{

    display:inline-block;

    padding:10px 22px;

    background:#EAF3FF;

    color:#0057D9;

    border-radius:50px;

    font-size:14px;

    font-weight:700;

}

.article-header h1{

    font-size:60px;

    line-height:1.15;

    margin:30px 0;

    color:#0F172A;

}

.article-header p{

    font-size:20px;

    color:#64748B;

    line-height:1.9;

}

.article-meta{

    margin-top:45px;

    display:flex;

    justify-content:center;

    flex-wrap:wrap;

    gap:35px;

}

.article-meta div{

    display:flex;

    align-items:center;

    gap:10px;

    color:#64748B;

    font-weight:600;

}

/*==========================================================

HERO IMAGE

==========================================================*/

.article-hero{

    padding-bottom:100px;

    background:#ffffff;

}

.article-hero img{

    width:100%;

    border-radius:28px;

    box-shadow:0 25px 60px rgba(15,23,42,.10);

    display:block;

}

/*==========================================================

ARTICLE LAYOUT

==========================================================*/


.container{

    width:100%;

    max-width:1280px;

    margin:0 auto;

    padding:0 24px;

}


.article-body{

    padding:100px 0;

    background:#ffffff;

}

.article-layout{

    display:grid;

    grid-template-columns:280px minmax(0,920px);

    justify-content:center;

    gap:60px;

    align-items:start;

}

/* Sidebar */

.article-sidebar{

    position:relative;

    align-self:start;

}

.toc{

    position:sticky;

    top:110px;

    background:#F8FAFC;

    border:1px solid #E5E7EB;

    border-radius:20px;

    padding:28px;

}

.toc h3{

    margin-bottom:22px;

    font-size:22px;

    color:#0F172A;

}

.toc ul{

    list-style:none;

    padding:0;

    margin:0;

}

.toc li{

    margin-bottom:14px;

}

.toc a{

    color:#64748B;

    text-decoration:none;

    transition:.3s;

    font-weight:500;

}

.toc a:hover{

    color:#0057D9;

}

/* Article */

.article-content{

   width:100%;

}

.article-content section{

    margin-bottom:50px;

}

.article-content h2{

    font-size:38px;

    margin-bottom:22px;

    color:#0F172A;

}

.article-content p{

    font-size:18px;

    line-height:1.9;

    color:#475569;

    margin-bottom:24px;

}

.article-content ul{

    padding-left:25px;

}

.article-content li{

    margin-bottom:14px;

    line-height:1.8;

    color:#475569;

}


/*==========================================================

NOTE BOX

==========================================================*/

.note-box{

    display:flex;

    gap:20px;

    align-items:flex-start;

    padding:28px;

    border-radius:18px;

    margin:35px 0;

}

.note-box i{

    width:28px;

    height:28px;

    flex-shrink:0;

}

.note-box strong{

    display:block;

    margin-bottom:10px;

    font-size:18px;

}

.note-box p{

    margin:0;

}

.note-box--info{

    background:#EAF4FF;

    border-left:5px solid #0057D9;

}

.note-box--info i{

    color:#0057D9;

}

.maintenance-table{

    width:100%;

    border-collapse:collapse;

    margin-top:30px;

    border-radius:16px;
    
    box-shadow:0 8px 25px rgba(15,23,42,.06);

}

.maintenance-table th{

    background:#0057D9;

    color:#fff;

    padding:18px;

    text-align:left;

}

.maintenance-table td{

    padding:18px;

    border-bottom:1px solid #E5E7EB;

}

.maintenance-table tr:nth-child(even){

    background:#F8FAFC;

}

/*==========================================================

DAILY INSPECTION

==========================================================*/

.inspection-grid{

    display:grid;

    grid-template-columns:repeat(2,minmax(280px,1fr));

    gap:24px;

    margin-top:35px;

    width:100%;

}

.inspection-card{

    display:flex;

    gap:20px;

    padding: 22px;

    align-items:flex-start;

    background:#F8FAFC;

    border-radius:18px;

    border:1px solid #E5E7EB;

    transition:.3s;

}

.inspection-card:hover{

    transform:translateY(-5px);

    border-color:#0057D9;

    box-shadow:0 15px 35px rgba(15,23,42,.08);

}

.inspection-icon{

    width:52px;

    height:52px;

    border-radius:16px;

    background:#EAF4FF;

    display:flex;

    justify-content:center;

    align-items:center;

    flex-shrink:0;

}

.inspection-icon svg{

    width:28px;

    height:28px;

    color:#0057D9;

}

.inspection-card h4{

    font-size:22px;

    margin-bottom:8px;

    color:#0F172A;

}

.inspection-card p{

    margin:0;

    font-size:16px;

    line-height:1.8;

    color:#64748B;

}

/*==========================================================

LUBRICATION

==========================================================*/

.lubrication-grid{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:24px;

    margin:40px 0;

}

.lubrication-card{

    background:#F8FAFC;

    border:1px solid #E5E7EB;

    border-radius:18px;

    padding: 24px;

    transition:.3s;

    display:flex;

    flex-direction:column;

    justify-content:flex-start;

    height:100%;


}

.lubrication-card:hover{

    transform:translateY(-5px);

    border-color:#0057D9;

    box-shadow:0 15px 35px rgba(15,23,42,.08);

}

.lubrication-card svg{

    width:34px;

    height:34px;

    color:#0057D9;

    margin-bottom:18px;

}

.lubrication-card h4{

    font-size:26px;

    margin-bottom:12px;

    color:#0F172A;

}

#lubrication h2{

    margin-bottom:25px;

}

.lubrication-card p{

    margin:0;

    font-size:16px;

    line-height:1.7;

    color:#64748B;

}

.sub-heading{

    margin:45px 0 25px;

    font-size:30px;

    color:#0F172A;

}

.check-list{

    list-style:none;

    padding:0;

}

.check-list li{

    display:flex;

    align-items:flex-start;

    gap:12px;

    margin-bottom:18px;

    font-size:17px;

    line-height:1.8;

    color:#475569;

}

.check-list svg{

    width:20px;

    height:20px;

    color:#16A34A;

    margin-top:5px;

    flex-shrink:0;

}

#lubrication > p{

    max-width:900px;

}

.note-box{

    margin:35px 0 45px;

}

#lubrication > p:last-of-type{

    margin-bottom:40px;

}

/*==========================================================

COOLING SYSTEM

==========================================================*/

.cooling-checklist{

    margin:40px 0;

    display:flex;

    flex-direction:column;

    gap:18px;

}

.cooling-item{

    display:flex;

    gap:20px;

    padding:24px 28px;

    background:#F8FAFC;

    border:1px solid #E5E7EB;

    border-radius:18px;

    transition:.3s;

}

.cooling-item:hover{

    border-color:#0057D9;

    transform:translateX(6px);

    box-shadow:0 12px 28px rgba(15,23,42,.08);

}

.cooling-item svg{

    width:24px;

    height:24px;

    color:#16A34A;

    flex-shrink:0;

    margin-top:4px;

}

.cooling-item h4{

    font-size:22px;

    margin-bottom:8px;

    color:#0F172A;

}

.cooling-item p{

    margin:0;

    font-size:16px;

    line-height:1.7;

    color:#64748B;

}

/* Warning Box */

.note-box--warning{

    background:#FFF7ED;

    border-left:5px solid #F97316;

}

.note-box--warning i{

    color:#F97316;

}

/*==========================================================

FUEL SYSTEM

==========================================================*/

.fuel-table{

    width:100%;

    border-collapse:collapse;

    margin:35px 0 50px;

    border-radius:18px;

    overflow:hidden;

    box-shadow:0 10px 30px rgba(15,23,42,.06);

}

.fuel-table th{

    background:#0057D9;

    color:#fff;

    padding:18px;

    text-align:left;

}

.fuel-table td{

    padding:18px;

    border-bottom:1px solid #E5E7EB;

    vertical-align:top;

}

.fuel-table tr:nth-child(even){

    background:#F8FAFC;

}

/* Fuel Cards */

.fuel-grid{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:24px;

    margin:35px 0;

}

.fuel-card{

    background:#F8FAFC;

    border:1px solid #E5E7EB;

    border-radius:18px;

    padding:24px;

    transition:.3s;

}

.fuel-card:hover{

    transform:translateY(-5px);

    border-color:#0057D9;

    box-shadow:0 15px 35px rgba(15,23,42,.08);

}

.fuel-card svg{

    width:34px;

    height:34px;

    color:#0057D9;

    margin-bottom:18px;

}

.fuel-card h4{

    font-size:22px;

    margin-bottom:12px;

    color:#0F172A;

}

.fuel-card p{

    margin:0;

    font-size:16px;

    line-height:1.7;

    color:#64748B;

}

/*==========================================================

AIR INTAKE

==========================================================*/

.air-grid{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:28px;

    margin:40px 0;

}

.air-card{

    background:#F8FAFC;

    border:1px solid #E5E7EB;

    border-radius:20px;

    padding:32px;

    transition:.35s;

}

.air-card:hover{

    transform:translateY(-6px);

    border-color:#0057D9;

    box-shadow:0 20px 40px rgba(15,23,42,.08);

}

.air-icon{

    width:64px;

    height:64px;

    border-radius:16px;

    background:#EAF3FF;

    display:flex;

    align-items:center;

    justify-content:center;

    margin-bottom:20px;

}

.air-icon svg{

    width:34px;

    height:34px;

    color:#0057D9;

}

.air-card h3{

    font-size:28px;

    margin-bottom:20px;

    color:#0F172A;

}

.air-card ul{

    padding-left:22px;

}

.air-card li{

    margin-bottom:12px;

    line-height:1.8;

    color:#475569;

}

/*==========================================================

BATTERY & ELECTRICAL

==========================================================*/

.electrical-checklist{

    display:flex;

    flex-direction:column;

    gap:18px;

    margin:40px 0;

}

.electrical-item{

    display:flex;

    gap:22px;

    padding:24px 28px;

    background:#F8FAFC;

    border:1px solid #E5E7EB;

    border-radius:18px;

    transition:.3s;

}

.electrical-item:hover{

    transform:translateX(6px);

    border-color:#0057D9;

    box-shadow:0 15px 35px rgba(15,23,42,.08);

}

.status-icon{

    flex-shrink:0;

}

.status-icon svg{

    width:24px;

    height:24px;

    color:#16A34A;

    margin-top:3px;

}

.electrical-item h4{

    font-size:22px;

    margin-bottom:8px;

    color:#0F172A;

}

.electrical-item p{

    margin:0;

    font-size:16px;

    line-height:1.8;

    color:#64748B;

}

/*==========================================================

TROUBLESHOOTING

==========================================================*/

.troubleshooting-table{

    width:100%;

    border-collapse:collapse;

    margin:40px 0;

    overflow:hidden;

    border-radius:18px;

    box-shadow:0 10px 30px rgba(15,23,42,.06);

}

.troubleshooting-table th{

    background:#0057D9;

    color:#fff;

    text-align:left;

    padding:18px;

    font-size:16px;

}

.troubleshooting-table td{

    padding:18px;

    border-bottom:1px solid #E5E7EB;

    vertical-align:top;

    line-height:1.7;

}

.troubleshooting-table tr:nth-child(even){

    background:#F8FAFC;

}

.troubleshooting-table tr:hover{

    background:#EDF6FF;

}

/*==========================================================

FAQ

==========================================================*/

.faq-container{

    margin-top:45px;

}

.faq-item{

    background:#F8FAFC;

    border:1px solid #E5E7EB;

    border-radius:18px;

    margin-bottom:18px;

    overflow:hidden;

}

.faq-question{

    width:100%;

    background:none;

    border:none;

    padding:24px 30px;

    display:flex;

    justify-content:space-between;

    align-items:center;

    font-size:20px;

    font-weight:600;

    color:#0F172A;

    cursor:pointer;

    text-align:left;

}

.faq-question svg{

    width:22px;

    height:22px;

    transition:.3s;

}

.faq-answer{

    display:none;

    padding:0 30px 24px;

}

.faq-answer p{

    margin:0;

    font-size:17px;

    line-height:1.8;

    color:#64748B;

}

.faq-item.active .faq-answer{

    display:block;

}

.faq-item.active .faq-question svg{

    transform:rotate(180deg);

}

/*==========================================================

RELATED ARTICLES

==========================================================*/

.related-articles{

    margin-top:100px;

}

.related-grid{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:28px;

    margin-top:45px;

}

.related-card{

    background:#fff;

    border:1px solid #E5E7EB;

    border-radius:22px;

    padding:32px;

    text-decoration:none;

    transition:.35s;

    display:flex;

    flex-direction:column;

}

.related-card:hover{

    transform:translateY(-8px);

    border-color:#0057D9;

    box-shadow:0 20px 45px rgba(15,23,42,.08);

}

.related-icon{

    width:62px;

    height:62px;

    border-radius:18px;

    background:#EAF4FF;

    display:flex;

    justify-content:center;

    align-items:center;

    margin-bottom:22px;

}

.related-icon svg{

    width:32px;

    height:32px;

    color:#0057D9;

}

.related-card h3{

    font-size:24px;

    color:#0F172A;

    margin-bottom:14px;

    line-height:1.4;

}

.related-card p{

    font-size:16px;

    color:#64748B;

    line-height:1.8;

    flex:1;

}

.related-card span{

    color:#0057D9;

    font-weight:700;

    margin-top:22px;

}

/*==========================================================

DOCUMENTATION CTA

==========================================================*/

.documentation-cta{

    margin:120px 0 80px;

}

.documentation-banner{

    background:linear-gradient(135deg,#0057D9,#007BFF);

    color:#fff;

    border-radius:30px;

    padding:70px;

    text-align:center;

    box-shadow:0 25px 60px rgba(0,87,217,.25);

}

.cta-badge{

    display:inline-block;

    background:rgba(255,255,255,.15);

    padding:10px 20px;

    border-radius:999px;

    font-size:14px;

    font-weight:700;

    margin-bottom:25px;

}

.documentation-banner h2{

    font-size:46px;

    line-height:1.2;

    margin-bottom:25px;

}

.documentation-banner p{

    max-width:760px;

    margin:0 auto;

    font-size:18px;

    line-height:1.9;

    color:rgba(255,255,255,.9);

}

.documentation-features{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:20px;

    max-width:700px;

    margin:45px auto;

}

.doc-feature{

    display:flex;

    align-items:center;

    gap:12px;

    justify-content:center;

    background:rgba(255,255,255,.12);

    padding:18px;

    border-radius:16px;

}

.doc-feature svg{

    width:24px;

    height:24px;

}

.cta-buttons{

    display:flex;

    justify-content:center;

    gap:20px;

    flex-wrap:wrap;

}

.primary-btn{

    background:#fff;

    color:#0057D9;

    text-decoration:none;

    padding:16px 34px;

    border-radius:50px;

    font-weight:700;

    transition:.3s;

}

.primary-btn:hover{

    transform:translateY(-3px);

}

.secondary-btn{

    background:transparent;

    color:#fff;

    text-decoration:none;

    padding:16px 34px;

    border-radius:50px;

    border:2px solid rgba(255,255,255,.35);

    font-weight:700;

    transition:.3s;

}

.secondary-btn:hover{

    background:rgba(255,255,255,.12);

}