body{
    margin:0;
    font-family:Arial, sans-serif;
}

/* 导航栏 */

.logo{
    font-size:24px;
    font-weight:bold;
}

nav ul{
    display:flex;
    list-style:none;
    gap: 15px;
}

nav li{
    margin-left:25px;
}

nav a{
    color:white;
    text-decoration:none;
}

/* ------------- nav hover effect --------------- */

nav ul li a{

    color:#333;

    text-decoration:none;

    font-weight:600;

    position:relative;

    transition:all .3s ease;

}

nav ul li a:hover{

    color:#123E87;

    transform:translateY(-2px);

}

nav ul li a::after{

    content:"";

    position:absolute;

    left:0;

    bottom:-8px;

    width:0;

    height:3px;

    background:#123E87;

    transition:.3s;

}

nav ul li a:hover::after{

    width:100%;

}

/* 首页 */

.hero{

    height:85vh;

    background-image:
    linear-gradient(
    rgba(0,0,0,0.5),
    rgba(0,0,0,0.5)
    ),

    url("images/warehouse1.jpg");

    background-size:cover;

    background-position:center;

    display:flex;

    justify-content:center;

    align-items:center;

    text-align:center;

    color:white;
}

.hero h1{
    font-size:60px;
}

.hero p{
    font-size:22px;
}

.hero button{

    background: #123e87;;

    color:white;

    border:none;

    padding:15px 30px;

    font-size:18px;

    border-radius:8px;

    cursor:pointer;
}

.features{

    padding:80px 40px;

    text-align:center;
}

.feature-grid{

    display:grid;

    grid-template-columns:
    repeat(auto-fit,minmax(200px,1fr));

    gap:20px;

    margin-top:40px;
}

.feature{

    background:white;

    padding:30px;

    border-radius:12px;

    box-shadow:
    0 2px 10px rgba(0,0,0,0.1);

    font-size:30px;
}

/* home | our product*/

.home-products{

    padding:70px 10%;

    text-align:center;

}

.product-slider{

    display:flex;
     gap:25px;

    overflow-x:auto;
    padding:20px 0;
    scroll-behavior:smooth;

}

.product-box{

    width:300px;

    height: 400px;

    background:white;

    border-radius:10px;

    overflow:hidden;

    box-shadow:0 5px 15px rgba(0,0,0,0.1);

    flex-shrink:0;

}

.product-box img{

    width:100%;

    height:200px;

    object-fit:cover;

}

.product-box h3{

    padding:20px;

}

.view-products-btn{

    display:inline-block;

    margin-top:30px;

    background:#123e87;

    color:white;

    padding:15px 35px;

    text-decoration:none;

    border-radius:5px;

}

/* home | our service */

.services{

    padding:70px 10%;
    background:#d8e7ff41;
    text-align:center;
    max-width:1200px;
    margin:auto;

}

.service-list{

    max-width:900px;

    margin:30px auto;

}

.service-item{

    display:flex;

    align-items:center;

    gap:30px;

    padding:10px 10px;

    border-bottom:3px solid #2c2f54;

}

.service-item img{

    width:90px;

    height:90px;

    object-fit:cover;

    border-radius:12px;

    flex-shrink:0;

}

.service-content{

    flex:1;

    text-align: left;

}

.service-content h3{

    margin-bottom:8px;

    color:#09224a;

    font-size:25px;

}

.service-content p{

    color:#202020;

    font-size:18px;

    line-height:1.7;

}

/* home | gallery */

.gallery{

    padding:70px 40px;

    text-align:center;
}

.gallery-grid{

    display:grid;

    grid-template-columns:
    repeat(auto-fit,minmax(300px,1fr));

    gap:20px;
}

.gallery img{

    width:100%;

    height: 320px;

    border-radius:12px;
}

.whatsapp-chat{

    position:fixed;

    right:20px;

    bottom:20px;

    z-index:9999;

}

.whatsapp{

    width:70px;

    height:70px;

    background:#25D366;

    color:white;

    border-radius:50%;

    display:flex;

    justify-content:center;

    align-items:center;

    text-decoration:none;

    font-size:35px;

    box-shadow:0 4px 10px rgba(0,0,0,0.3);

    transition: 0.3s ease;
}

.whatsapp-chat:hover .whatsapp{
    transform: scale(1.15);
    filter: drop-shadow(0 6px 12px rgba(0,0,0,.35));
}

.whatsapp-chat:hover .chat-tooltip{

    opacity:1;

    visibility:visible;

}

.chat-tooltip{

    position:absolute;

    bottom:90px;

    right:0;

    background: rgba(28, 28, 28, .88);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, .12);

    color:white;

    padding:12px 16px;

    border-radius:10px;

    width:220px;

    opacity:0;

    visibility:hidden;

    transition:.3s ease;

    font-size:14px;

    line-height:1.6;

}


.chat-tooltip::after{

    content:"";

    position:absolute;

    bottom:-8px;

    right:25px;

    border-width:8px;

    border-style:solid;

    border-color:#222 transparent transparent transparent;

}

/* find us | location */

.location-section{

    display:flex;

    gap:50px;

    align-items:center;

    padding:80px 10%;

}

.location-map{

    width: 500px;
    aspect-ratio: 1/1;
    margin: auto;
    overflow: hidden;
    border-radius: 15px;

}

.location-map img{

    width:100%;
    height: 100%;
    border-radius:10px;

}

.location-info{

    flex:1;

}

.location-btn,
.whatsapp-btn{

    display:block;

    width:220px;

    text-align:center;

    padding:10px 20px;

    margin-top:18px;

    border-radius:8px;

    text-decoration:none;

    font-weight:bold;

    transition:0.3s;
}

.location-btn{

    background:#123e87;

    color:white;

}

.whatsapp-btn{

    background:#25D366;

    color:white;

}


/* home | about banner */

.about-banner{

    height:500px;

    background-image:url("images/about-banner.jpg");

    background-size:cover;

    background-position:center;

    display:flex;

    justify-content:center;

    align-items:center;

    position:relative;

}

.about-overlay{

    background:rgba(0,0,0,0.5);

    padding:50px;

    color: white;

    border-radius:0;

    text-align: left;
    align-items: flex-start;

    position: absolute;
    inset: 0;
}

.about-text-home h2{

    font-size:50px;

    margin-bottom:20px;

    width: 700px;

    color: #0b57d9;

}

.about-text-home p{

    width: 70%;

    line-height: 1.8;

    font-size:20px;

    margin-bottom:30px;

    color: white;

}

.about-content{

    width:80%;

    padding:0 80px;

    display:flex;

    justify-content:space-between;

    align-items:center;

}

.about-text{

    max-width:650px;

}

.about-text-home .about-malay{
    width: auto;
    display:inline-block;
    margin-top:22px;
    padding:8px 18px;
    border:1px solid rgba(255,255,255,.45);
    border-radius:30px;
    color:#fff;
    font-size:16px;
    font-weight:600;
    backdrop-filter:blur(6px);
}

.banner-btn{

    background:#123e87;

    color:white;

    padding:15px 35px;

    text-decoration:none;

    border-radius:5px;

    font-weight:bold;

    

}

.about-btn{

    display:flex;

    justify-content:flex-end;

    flex-shrink: 0;

    padding-right: 200px;

    margin-top: 30px;

}

/*products page*/

.products-page{

padding:80px 40px;

text-align:center;
}

.product-grid{

display:grid;

grid-template-columns:
repeat(auto-fit,minmax(300px,1fr));

gap:30px;
}

.product-card{

background:white;

padding:20px;

border-radius:12px;

box-shadow:0 2px 10px rgba(0,0,0,0.1);
}

.product-card img{

width:100%;

height:250px;

object-fit:cover;

border-radius:10px;
}

.product-card button{

background:#123e87;

color:white;

border:none;

padding:12px 25px;

border-radius:6px;

cursor:pointer;
}

.product-buttons{

    display:flex;

    justify-content:center;

    gap:5px;

}


.view-btn{

    display:inline-block;

    padding:12px 25px;

    background:#123e87;

    color:white;

    text-decoration:none;

    text-align:center;

    border-radius:6px;

    font-weight:bold;

    font-size:11px;

    cursor:pointer;

    transition:0.3s;

}

.view-btn:hover{

    background: #1d4fa8;

    transform:scale(1.08);

    filter: drop-shadow(10);


}

/* ------------------- back to products button ------------------- */

.back-section{
    margin-top: 130px;   /* 避开固定导航栏 */
    margin-left: 40px;
}

.back-section button{
    padding: 10px 18px;
    border: none;
    border-radius: 6px;
    background: #123e87;
    color: white;
    cursor: pointer;
    font-size: 16px;
}

.back-section button:hover{
    background: #0f326d;
}

.slider-wrapper{

    position:relative;

    display:flex;

    align-items:center;

    gap: 40px;

}

.slider-btn{

    position:absolute;
    top: 50%;
    transform: translateY(-50%);

    width:50px;
    height:50px;

    border:none;
    border-radius:50%;
    background:#123e87;

    box-shadow:0 4px 10px rgba(0,0,0,.2);
    cursor:pointer;
    font-size:28px;
    z-index:10;

    transition:.3s;

    display: flex;
    justify-content: center;
    align-items: center;

}

.slider-btn:hover{

    background:#0f326d;

    color:white;

    transform:scale(1.1);

}

.slider-btn.left{

    left:-60px; 

}

.slider-btn.right{

    right:-60px;

}

.back-btn{

    border:none;

    background:none;

    color:#123e87;

    font-size:18px;

    cursor:pointer;

}

/* Navigation */

nav{
position:fixed;
top:0;
left:0;
right:0;
width:100%;
box-sizing: border-box;

background:rgb(255, 255, 255);

display:flex;
justify-content:space-between;
align-items:center;
padding:20px 5%;

box-shadow:
0 2px 10px rgba(0,0,0,0.1);

z-index:1000;
}

.logo{
font-size:24px;
font-weight:bold;
color: #0d2e66;;
}

nav ul{
display:flex;
list-style:none;
gap: 35px;
}

nav a{
text-decoration:none;
color:#333;
font-weight:600;
}

/* modal */

.modal{

display:none;

position:fixed;

top:0;
left:0;

width:100%;
height:100%;

background:rgba(0,0,0,0.7);

z-index:9999;

overflow:auto;

}

.modal-content{

background:white;

width:90%;

max-width:1000px;

margin:50px auto;

padding:25px;

border-radius:10px;

position:relative;

}

.close{

position:absolute;

right:20px;

top:10px;

font-size:35px;

cursor:pointer;

}

.spec-image{

width:100%;

margin-top:20px;

border-radius:10px;

}

/* product_table */

.table-title{

background:#0b2f68;

color:white;

font-size:24px;

font-weight:bold;

padding:15px;

}

.size-table{

width:100%;

border-collapse:collapse;

}

.size-table th{

background:#0b2f68;

color:white;

padding:12px;

text-align: center;

border:1px solid #e6e6e6;

}

.size-table td{

border:1px solid #ddd;

padding:10px;

text-align:center;

}

.size-table tbody tr:hover{

    background:#f5f9ff;

}

/* product specification */

.spec-table{
    width:100%;
    border-collapse:collapse;
    margin-top:10px;
}

.spec-table td{
    border:1px solid #1b3b7a;
    padding:8px;
    font-size:14px;
}

.spec-table tr td:first-child{
    font-weight:bold;
    width:40%;
}

.spec-box h3{
    background:#0b2f6b;
    color:white;
    padding:10px;
    margin:0;
}

/* ------------ second pipe table --------------- */

.spec-header{

    background:#0b2f68;

    color:white;

    padding:18px 30px;

    border-radius:8px 8px 0 0;

    text-align: left;

    display: flex;

    flex-direction: column;

    gap: 10px;

}

.spec-header h1{

    margin:0;

    font-size:25px;

    font-weight:700;

    letter-spacing:1px;

}

.spec-header p{

    margin:0;

    font-size:20px;

    font-weight:600;

}

.standard-length{

    background:#0b2f68;

    color:white;

    padding:12px 30px;

    margin-top:3px;

    font-size:20px;

    font-weight:bold;

    text-align: left;

}

.table-title{

    background:white;

    text-align:center;

    padding:18px;

    font-size:20px;

    font-weight:bold;

    color:#0b2f6b;

    border:1px solid #ddd;

    text-align: left;

}

/* ---------- steel plate -------------- */

.plate-spec{

    max-width:1100px;

    margin:60px auto;

    padding:20px;

    margin-top: 0;

}

.plate-spec h2{

    text-align:center;

    color:#0b2f68;

    margin-bottom:40px;

}

.spec-grid{

    display:grid;

    grid-template-columns:1fr 1fr;

    gap: 30px;

}

.thickness-list{

    display:grid;

    grid-template-columns:1fr 1fr;

    gap:8px 30px;

    list-style: none;

    padding: 20px;

    margin: 0;

}

.thickness-list li{
   
    padding: 8px 0;

    border-bottom: 1px solid #eee;
}

.spec-boxs{

    background:white;

    border-radius:10px;

    box-shadow:0 5px 15px rgba(0,0,0,.1);

    overflow:hidden;

}

.spec-boxs h3{

    background:#0b2f68;

    color:white;

    padding:15px;

    text-align:center;

}

.spec-boxs ul{

    list-style:none;

    padding:20px;

    margin:0;

}

.spec-boxs li{

    padding:8px 0;

    border-bottom:1px solid #eee;

}

.spec-boxs table{

    width:100%;

    border-collapse:collapse;

}

.spec-boxs th{

    background:#0b2f68;

    color:white;

    padding:12px;

}

.spec-boxs td{

    padding:12px;

    border-bottom:1px solid #eee;

    text-align:center;

}

/* -------------- I & H Beam ------------------ */

.beam-title{

    background:#123e87;

    color:white;

    display:flex;

    align-items:center;

    padding:8px 22px;

}

.beam-icon{

    width:35px;

    height:35px;

    background:white;

    color:#123e87;

    border-radius:50%;

    display:flex;

    justify-content:center;

    align-items:center;

    font-size:25px;

    font-weight:bold;

    margin-right:18px;

}

/* ------------------- roofing --------------------- */

.roof-modal{

    background:white;

    width:1000px;

    max-width:90%;

    margin:auto;

    border-radius:18px;

    padding:40px;

    position:relative;

}

.roof-modal h2{

    text-align:center;

    color:#123e87;

    font-size:34px;

    margin-bottom:0;

}

.roof-section{

    padding:30px 0;

    border-bottom:1px solid #ddd;

}

.roof-section h3{

    color:#123e87;

    font-size:24px;

    margin-bottom:25px;

}

.roof-table{

    width:100%;

    border-collapse:collapse;

    margin-top:20px;

}

.roof-table th{

    background:#123e87;

    color:white;

    padding:15px;

    text-align:center;

    font-weight:600;

}

.roof-table td{

    padding:15px;

    text-align:center;

    border:1px solid #ddd;

}

.roof-table td:first-child{

    text-align:left;

    font-weight:600;

    background:#f8f9fb;

}


.roof-cards::-webkit-scrollbar{

    display:none;

}

.roof-card{

    background:#ffffff;

    border-radius:15px;

    overflow:hidden;

    box-shadow:0 5px 15px rgba(0,0,0,.08);

    transition:.3s;

    cursor:pointer;

    flex: 0 0 220px;

}

.roof-header{

    background:#123e87;

    padding:8px 25px;

    text-align:center;

}

.roof-image{

    position:relative;

    overflow:hidden;

}

.roof-card:hover{

    transform:translateY(-8px);

    box-shadow:0 12px 25px rgba(0,0,0,.18);

}

.roof-profile{

    width:100%;
    height:auto;

    display:block;

}

.dimension{

    text-align:center;

    font-size:16px;

    font-weight:600;

    color:#444;

    margin-bottom:12px;

}

.roof-card h4{

    margin: 0;
    padding:0;

    text-align:center;

    color:#ffffff;

    font-size:18px;
    font-weight: 700;

}

.roof-overlay{

    position:absolute;

    inset:0;

    background:rgba(0,0,0,.55);

    display:flex;

    flex-direction:column;

    justify-content:center;

    align-items:center;

    opacity:0;

    transition:.35s;

    color:white;

    padding:15px;

}

.pitch{

    text-align:center;

    color:#666;

    font-size:15px;

    margin-bottom:20px;

}

.roof-card:hover .roof-overlay{

    opacity:1;

}

.roof-photo{

    width:90%;
    height:140px;

    margin: 20px auto;
    display: block;

    object-fit:cover;

    transition:.35s;

}

.roof-card:hover .roof-photo{

    transform:scale(1.08);

}

.roof-overlay .roof-profile{

    width:90px;

    margin-bottom:15px;

    filter:brightness(0) invert(1);
}

.roof-overlay p{

    margin:4px 0;

    font-size:14px;

}

.diagram-title{
    font-size:12px;
    font-weight:600;
    color:#123e87;
    text-align:center;
    margin-bottom:12px;
    letter-spacing:.5px;

    padding-bottom: 10px;

    border-bottom: 1px solid #ddd;
}

.roof-info{

    padding:18px;

}

.roofSlider-btn{

    width:45px;

    height:45px;

    border:none;

    border-radius:50%;

    background:#123e87;

    color:white;

    font-size:22px;

    cursor:pointer;

    display: flex;
    justify-content: center;
    align-items: center;

}

.roofSlider-btn:hover{

    background:#0f326d;

}

.roof-wrapper{

    display:flex;

    align-items:center;

    gap:20px;

    position:relative;

}

.roof-slider{

    display:flex;
    width: 100%;

    gap:25px;

    overflow-x:auto;
    overflow-y: hidden;

    scroll-behavior:smooth;
    scrollbar-width: none;

}


.roof-slider::-webkit-scrollbar{

    display:none;

}

/* ---------- roof color --------------- */

.color-wrapper{

    display:flex;

    align-items:center;

    gap:20px;

    position:relative;

}

.color-slider{

    display:flex;
    gap:20px;

    overflow-x:auto;
    overflow-y: hidden;

    scroll-behavior: smooth;
    scrollbar-width:none;

}

.color-slider::-webkit-scrollbar{

    display:none;

}


.color-card{

    width:180px;

    flex-shrink:0;

    background:white;

    border-radius:15px;

    padding:20px;

    text-align:center;

    box-shadow:0 5px 15px rgba(0,0,0,.08);

}

.colour-box{

    width:100%;

    height:90px;

    border-radius:12px;

    border:1px solid #ddd;

}

.color-btn{

    width:45px;

    height:45px;

    border:none;

    border-radius:50%;

    background:#123e87;

    color:white;

    font-size:22px;

    cursor:pointer;

    display: flex;
    justify-content: center;
    align-items: center;

}

.color-btn:hover{

    background:#0f326d;

}

.color-box{
    width:100%;
    height:90px;
    border-radius:12px;
    border:1px solid #ddd;
}

.aluzinc{
    background-image:url("images/aluzinc.jpg");
    background-size:cover;
    background-position:center;
}

/* ------------ purlin --------------- */

.load-span{

    margin-top:50px;

}

.load-span h3{

    color:#0b2f68;
    margin-bottom:10px;

}

.table-note{

    color:#666;
    margin-bottom:20px;

}

.load-span table{

    width:100%;

    border-collapse:collapse;

    background:#fff;

    overflow:hidden;

    box-shadow:0 5px 15px rgba(0,0,0,.08);

}

.load-span th{

    background:#0b2f68;

    color:white;

    padding:14px;

    text-align:center;

    border:1px solid #d9d9d9;

}

.load-span td{

    padding:14px;

    text-align:center;

    border:1px solid #e6e6e6;

}

/* 前2行白 */
.purlin-table tbody tr:nth-child(-n+2){
    background:#fff;
}

/* 接着3行蓝 */
.purlin-table tbody tr:nth-child(12n+3),
.purlin-table tbody tr:nth-child(12n+4),
.purlin-table tbody tr:nth-child(12n+5),
.purlin-table tbody tr:nth-child(12n+9),
.purlin-table tbody tr:nth-child(12n+10),
.purlin-table tbody tr:nth-child(12n+11){

    background:#f3f8ff;
}


.load-span tbody tr:hover{

    background:#dce4ef;

}

.diagram-section{

    display:flex;

    gap:30px;

    margin-top:50px;

    align-items:flex-start;

}

.diagram-card{

    flex:1;

    background:white;

    padding:20px;

    border-radius:15px;

    box-shadow:0 5px 15px rgba(0,0,0,.08);

}

.diagram-card img{

    width:100%;

    display:block;

}

@media (max-width:768px){

    .diagram-section{

        flex-direction:column;

    }

}

/* -------------- ACP Board ----------------- */

.acp-overview{

    display:flex;

    gap:50px;

    align-items:flex-start;

    margin-bottom:50px;

}

.acp-gallery{
    flex:0 1 300px;
}

.main-image{

    width: 100%;
    height:420px;

    object-fit:cover;

    border-radius:15px;
}

.thumbnail-row{

    display:flex;

    gap:10px;

    margin-top:15px;

}

.thumbnail-row img{

    width:80px;

    height:80px;

    object-fit:cover;

    border-radius:10px;

    cursor:pointer;

    border:2px solid transparent;

    transition:.3s;

}

.thumbnail-row img:hover{

    border:2px solid #123e87;

}

.acp-info{

    flex:1;

}

.acp-info h2{

    color:#123e87;

    margin-bottom:20px;

}

.acp-info li{

    margin-bottom:15px;

    font-size:18px;

}

.acp-table table{

    width:100%;

    border-collapse:collapse;

    box-shadow:0 5px 15px rgba(0,0,0,.08);

}

.acp-table th{

    background:#123e87;

    color:white;

    padding:16px;

}

.acp-table td{

    padding:16px;

    border:1px solid #ddd;

}

.acp-table tbody tr:nth-child(even){

    background:#f7f9fc;

}


/* yes & no */

.yes{

color:green;

font-size:22px;

font-weight:bold;

}

.no{

color:red;

font-size:22px;

font-weight:bold;

}

.legend-row{

margin-top:20px;

font-size:18px;

display:flex;

gap:30px;

}

.bottom-section{

display:flex;

gap:30px;

margin-top:20px;

flex-wrap:wrap;

text-align: left;

}

.spec-box{

flex:1;

min-width:300px;

}

.spec-box td{

    vertical-align: top;

    font-weight: bold;

     padding:4px 8px;

}

.spec-box td:first-child{
    width:220px;
}

.spec-box td:nth-child(2){
    width:20px;
    text-align:center;
}

.diagram-box{

flex:1;

min-width:300px;

text-align:center;

}

.diagram-box img{

max-width:100%;

}

/* About Us */

.about-page{

padding:80px 10%;

background:white;

}

.about-block{

    max-width:1200px;
    margin:200px auto;

    display:grid;
    grid-template-columns: 1fr 1fr;
    gap: 150px;

    align-items:flex-start;


    position: relative;

}

.about-block::after{

    content:"";

    position:absolute;

    left:10%;

    right:10%;

    bottom:-80px;

    height:5px;

    background:#17235a;

    border-radius: 5px;
}

.about-text{

flex:6;
max-width: 630px;
padding-left: 100px ;

}

.about-image{

    flex:6;

}

.about-image img{

    width:100%;

    height:430px;

    object-fit:cover;

    border-radius:18px;

}

.about-block.reverse{

    direction: rtl;

}

.about-block.reverse > *{

    direction:ltr;

}


.about-text h2{

font-size:42px;

margin-bottom:20px;

color: #0d2e66;;

}

.about-text p{

font-size:18px;

line-height:1.8;

}

/* all button hover effect */

button,
.btn,
.hero-btn,
.banner-btn,
.view-products-btn{

    background: #1d4fa8;;

    color:white;

    padding:12px 25px;

    border:none;

    border-radius:5px;

    cursor:pointer;

    transition:all 0.3s ease;

}

button:hover,
.btn:hover,
.hero-btn:hover,
.banner-btn:hover,
.view-products-btn:hover{

    background: #1d4fa8;

    transform:scale(1.08);

    filter: drop-shadow(10);

}

button:active,
.btn:active{

    transform:scale(0.95);

}

/* text */

.about-text p{
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: justify;
}

/* HERO SECTION */

.contact-hero{

    height:350px;

    background:url("images/warehouse1.jpg") center/cover;

    position:relative;

    display:flex;

    justify-content:center;

    align-items:center;

}

.hero-overlay{

    background:rgba(9, 8, 8, 0.6);

    width:100%;
    height:100%;

    display:flex;
    flex-direction:column;

    justify-content:center;
    align-items:center;

    text-align:center;

    color:white;
}

.hero-overlay h1{

    font-size:3rem;

    margin-bottom:15px;
}

.hero-overlay p{

    font-size:1.2rem;
}


/* CONTACT US | COMPANY INFO */

.contact-container{

    max-width:1200px;

    margin:60px auto;

    display:grid;

    grid-template-columns:repeat(auto-fit,minmax(350px,1fr));

    gap:30px;

    padding:0 20px;
}

.contact-card{

    background:white;

    padding:30px;

    border-radius:12px;

    box-shadow:0 5px 15px rgba(0,0,0,0.1);
}

.contact-card h2{

    color: #0d2e66;;

    margin-bottom:20px;
}


/* BUSINESS HOURS */

.hours-list{

    list-style:none;

    padding:0;
}

.hours-list li{

    display:flex;

    justify-content:space-between;

    padding:12px 0;

    border-bottom:1px solid #ddd;
}


/* QUICK CONTACT */

.quick-contact{

    text-align:center;

    padding:60px 20px;

    background:#f8f8f8;
}

.quick-contact h2{

    margin-bottom:30px;
}

.contact-buttons{

    display:flex;

    justify-content:center;

    gap:20px;

    flex-wrap:wrap;
}

.contact-btn{

    background:#123e87;

    color:white;

    text-decoration:none;

    padding:15px 30px;

    border-radius:8px;

    transition:0.3s;
}

.contact-btn:hover{

    background:#1d4fa8;

    transform:translateY(-5px);
}


/* FAQ */

.faq-section{

    max-width:1000px;

    margin:100px auto;

    padding:0 20px;

}

.faq-section h2{

    text-align:center;

    font-size:42px;

    color: #0d2e66;;

    margin-bottom:50px;

}

/* Card */

.faq-item{

    background:white;

    border-radius:10px;

    box-shadow:0 5px 18px rgba(0,0,0,.08);

    margin-bottom:20px;

    border-left: 5px solid #2e73d6;

    overflow:hidden;

}

/* Question */

.faq-question{

    width:100%;

    border:none;

    background:white;

    padding:25px 30px;

    display:flex;

    justify-content:space-between;

    align-items:center;

    cursor:pointer;

    font-size:18px;

    font-weight:600;

    transition:.3s;

    color: #1d1d1d;

}

.faq-question:hover{

    transform: translateY(-2px);

    background:#f7f7f7;

}

/* Arrow */

.arrow{

    font: size 25px;

    transition:.3s;

}

/* Answer */

.faq-answer{

    max-height:0;

    overflow:hidden;

    transition:max-height .35s ease;

}

.faq-answer p{

    padding:0 30px 25px;

    margin:0;

    color:#666;

    line-height:1.8;

}

/* Active */

.faq-item.active .faq-answer{

    max-height:250px;

}

.faq-item.active .arrow{

    transform:rotate(180deg);

}

/* --------      Footer      --------- */

.footer{

    background:#1d1d1d;

    color:white;

    margin-top:80px;

}

.footer-container{

    max-width:1300px;

    margin:auto;

    padding:60px 8%;

    display:flex;

    justify-content:space-between;

    gap:60px;

    flex-wrap:wrap;

}

.footer-col{

    flex:1;

    min-width:240px;

}

.footer h2{

    color:#1e61d4;

    margin-bottom:20px;

}

.footer h3{

    margin-bottom:20px;

}

.footer p{

    color:#d5d5d5;

    line-height:1.8;

    margin-bottom:15px;

}

.footer-col a{

    display:block;

    color:white;

    text-decoration:none;

    margin-bottom:15px;

    transition:.3s;

}

.footer-col a.footer-btn whatsapp-us:hover{

    color:#e11d48;

}

footer-col a.footer-btn direction:hover{

    color:#44e11d;

}


.footer-btn{

    display:inline-block;

    width:200px;

    text-align:center;

    padding:14px;

    border-radius:8px;

    margin-top:15px;

    font-weight:bold;

}

.whatsapp-us{

    background:#25D366;

}

.direction{

    background:#dc2626;

}

.footer-btn:hover{

    transform:translateY(-3px);

    opacity:.9;

}

.footer-bottom{

    text-align:center;

    padding:20px;

    border-top:1px solid #444;

    color:#999;

}

.location-info .location-btn:hover{

    transform:translateY(-3px);

    opacity:.9;

}

.location-info .whatsapp-btn:hover{

    transform:translateY(-3px);

    opacity:.9;

}

/* --------------- header --------------- */

.section-header{

    text-align:center;
    margin-bottom:60px;

}

.section-subtitle{

    font-size:14px;
    font-weight:700;
    letter-spacing:3px;
    color:#123e87;
    text-transform:uppercase;
    margin-bottom:10px;

}

.section-title{

    font-size:42px;
    font-weight:700;
    color:#222;
    margin-bottom:18px;
    position:relative;

}

.section-title::after{

    content:"";
    display:block;
    width:80px;
    height:4px;
    background:#123e87;
    margin:18px auto 0;
    border-radius:10px;

}

.section-description{

    max-width:700px;
    margin:25px auto 0;
    color:#666;
    line-height:1.8;
    font-size:17px;

}






/* =====================================================
   MOBILE RESPONSIVE DESIGN
   ===================================================== */

@media (max-width: 768px) {

    /* ---------- 基础 ---------- */

    * {
        box-sizing: border-box;
    }

    html,
    body {
        width: 100%;
        max-width: 100%;
        margin: 0;
        padding: 0;
        overflow-x: hidden;
    }

    img {
        max-width: 100%;
    }


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

    nav {
        position: fixed;
        width: 100%;
        left: 0;
        right: 0;

        padding: 12px 18px;

        display: flex;
        align-items: center;
        justify-content: space-between;

        gap: 10px;
    }

    .logo {
        font-size: 20px;
        line-height: 1.2;
        max-width: 150px;
        flex-shrink: 0;
    }

    nav ul {
        display: flex;
        gap: 15px;

        margin: 0;
        padding: 0;

        flex-wrap: wrap;
        justify-content: flex-end;
    }

    nav li {
        margin-left: 0;
    }

    nav a {
        font-size: 15px;
        white-space: nowrap;
    }


    /* =================================================
       HOME HERO
       ================================================= */

    .hero {
        width: 100%;
        height: 75vh;
        min-height: 500px;

        padding: 20px;
    }

    .hero h1 {
        font-size: 38px;
        line-height: 1.15;

        margin: 0 0 20px;
    }

    .hero p {
        font-size: 18px;
        line-height: 1.5;

        margin: 0 auto 25px;

        max-width: 90%;
    }

    .hero button {
        font-size: 16px;
        padding: 13px 24px;
    }


    /* =================================================
       FEATURES
       ================================================= */

    .features {
        padding: 50px 20px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature {
        padding: 25px;
        font-size: 24px;
    }


    /* =================================================
       HOME PRODUCTS
       ================================================= */

    .home-products {
        padding: 50px 20px;
    }

    .product-slider {
        gap: 15px;
        padding: 15px 5px;

        overflow-x: auto;
    }

    .product-box {
        width: 260px;
        height: 360px;
    }

    .product-box img {
        height: 180px;
    }


    /* =================================================
       SERVICES
       ================================================= */

    .services {
        width: 100%;
        max-width: 100%;

        padding: 50px 20px;
    }

    .service-list {
        width: 100%;
    }

    .service-item {
        gap: 15px;
        padding: 15px 5px;
    }

    .service-item img {
        width: 65px;
        height: 65px;
    }

    .service-content h3 {
        font-size: 20px;
    }

    .service-content p {
        font-size: 16px;
        line-height: 1.6;
    }


    /* =================================================
       GALLERY
       ================================================= */

    .gallery {
        padding: 50px 20px;
    }

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

    .gallery img {
        height: auto;
        min-height: 220px;
        object-fit: cover;
    }


    /* =================================================
       LOCATION
       ================================================= */

    .location-section {
        width: 100%;

        display: flex;
        flex-direction: column;

        gap: 30px;

        padding: 50px 20px;
    }

    .location-map {
        width: 100%;
        max-width: 400px;
    }

    .location-info {
        width: 100%;
    }

    .location-btn,
    .whatsapp-btn {
        width: 100%;
        max-width: 300px;
    }


    /* =================================================
       ABOUT BANNER
       ================================================= */

    .about-banner {
        width: 100%;
        height: 600px;

        background-position: center;
    }

    .about-overlay {
        padding: 30px 20px;
    }

    .about-text-home {
        width: 100%;
    }

    .about-text-home h2 {
        width: 100%;

        font-size: 40px;
        line-height: 1.15;

        margin-bottom: 20px;
    }

    .about-text-home p {
        width: 100%;

        font-size: 17px;
        line-height: 1.6;
    }

    .about-text-home .about-malay {
        width: auto;
        max-width: 100%;

        font-size: 14px;
        line-height: 1.5;

        padding: 8px 15px;
    }

    .about-btn {
        display: flex;
        justify-content: flex-start;

        padding-right: 0;
        margin-top: 25px;
    }


    /* =================================================
       PRODUCTS PAGE
       ================================================= */

    .products-page {
        padding: 60px 20px;
    }

    .product-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .product-card {
        width: 100%;
    }

    .product-card img {
        height: auto;
        max-height: 300px;
    }

    .product-buttons {
        flex-wrap: wrap;
    }


    /* =================================================
       BACK BUTTON
       ================================================= */

    .back-section {
        margin-top: 100px;
        margin-left: 20px;
        margin-right: 20px;
    }


    /* =================================================
       SLIDER BUTTON
       ================================================= */

    .slider-wrapper {
        width: 100%;
    }

    .slider-btn.left {
        left: 5px;
    }

    .slider-btn.right {
        right: 5px;
    }

    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }


    /* =================================================
       MODAL
       ================================================= */

    .modal {
        padding: 10px;
    }

    .modal-content {
        width: 95%;
        max-width: 95%;

        margin: 30px auto;
        padding: 15px;
    }

    .close {
        right: 12px;
        top: 5px;
        font-size: 30px;
    }

    .spec-image {
        width: 100%;
        height: auto;
    }


    /* =================================================
       TABLE
       ================================================= */

    .size-table,
    .spec-table,
    .roof-table,
    .load-span table,
    .acp-table table {
        min-width: 650px;
    }

    .modal-content {
        overflow-x: auto;
    }

    .load-span {
        overflow-x: auto;
    }

    .acp-table {
        overflow-x: auto;
    }


    /* =================================================
       STEEL PLATE
       ================================================= */

    .plate-spec {
        width: 100%;

        margin: 40px auto;
        padding: 20px;
    }

    .spec-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .thickness-list {
        grid-template-columns: 1fr;
    }


    /* =================================================
       ROOFING
       ================================================= */

    .roof-modal {
        width: 95%;
        max-width: 95%;

        padding: 20px;
    }

    .roof-modal h2 {
        font-size: 26px;
    }

    .roof-section h3 {
        font-size: 20px;
    }

    .roof-wrapper {
        gap: 10px;
    }

    .roofSlider-btn,
    .color-btn {
        width: 40px;
        height: 40px;

        flex-shrink: 0;

        font-size: 18px;
    }

    .roof-card {
        flex: 0 0 200px;
    }

    .color-card {
        width: 160px;
    }


    /* =================================================
       PURLIN
       ================================================= */

    .load-span {
        margin-top: 30px;
    }

    .diagram-section {
        flex-direction: column;
        gap: 20px;
    }

    .diagram-card {
        width: 100%;
    }


    /* =================================================
       ACP BOARD
       ================================================= */

    .acp-overview {
        flex-direction: column;
        gap: 30px;
    }

    .acp-gallery {
        width: 100%;
    }

    .main-image {
        height: auto;
        max-height: 400px;
    }

    .acp-info {
        width: 100%;
    }

    .bottom-section {
        flex-direction: column;
        gap: 20px;
    }

    .spec-box,
    .diagram-box {
        width: 100%;
        min-width: 0;
    }

    .spec-box td:first-child {
        width: auto;
    }


    /* =================================================
       ABOUT US PAGE
       ================================================= */

    .about-page {
        padding: 60px 20px;
    }

    .about-block {
        width: 100%;

        margin: 80px auto;

        display: flex;
        flex-direction: column;

        gap: 30px;
    }

    .about-block.reverse {
        direction: ltr;
    }

    .about-text {
        width: 100%;
        max-width: 100%;

        padding-left: 0;
    }

    .about-text h2 {
        font-size: 32px;
        line-height: 1.2;
    }

    .about-text p {
        font-size: 16px;
        line-height: 1.7;
    }

    .about-image {
        width: 100%;
    }

    .about-image img {
        width: 100%;
        height: auto;
        max-height: 350px;
    }

    .about-block::after {
        left: 0;
        right: 0;
        bottom: -40px;
    }


    /* =================================================
       CONTACT PAGE
       ================================================= */

    .contact-hero {
        width: 100%;
        height: 300px;
    }

    .hero-overlay {
        padding: 20px;
    }

    .hero-overlay h1 {
        font-size: 36px;
        line-height: 1.2;
    }

    .hero-overlay p {
        font-size: 17px;
    }

    .contact-container {
        grid-template-columns: 1fr;

        margin: 40px auto;

        padding: 0 20px;
    }

    .contact-card {
        padding: 25px 20px;
    }


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

    .faq-section {
        margin: 60px auto;
        padding: 0 20px;
    }

    .faq-section h2 {
        font-size: 32px;
    }

    .faq-question {
        padding: 20px;

        font-size: 16px;

        text-align: left;
    }

    .faq-answer p {
        padding: 0 20px 20px;

        font-size: 15px;
    }


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

    .footer-container {
        padding: 45px 20px;

        flex-direction: column;

        gap: 35px;
    }

    .footer-col {
        width: 100%;
        min-width: 0;
    }

    .footer-btn {
        width: 100%;
        max-width: 300px;
    }


    /* =================================================
       SECTION HEADERS
       ================================================= */

    .section-header {
        margin-bottom: 40px;
    }

    .section-title {
        font-size: 32px;
        line-height: 1.2;
    }

    .section-description {
        font-size: 16px;
        line-height: 1.7;
    }


    /* =================================================
       WHATSAPP
       ================================================= */

    .whatsapp-chat {
        right: 15px;
        bottom: 15px;
    }

    .whatsapp {
        width: 60px;
        height: 60px;
        font-size: 30px;
    }

    .chat-tooltip {
        width: 190px;
        right: 0;
        bottom: 75px;
        font-size: 13px;
    }

}