:root{
    --navy:#0F172A;
    --white:#ffffff;
    --text:#111111;
}

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Noto Sans JP',sans-serif;
    color:var(--text);
    background:#fff;
}

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

.header{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    z-index:999;
    padding:24px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.header-logo img{
    width:120px;
    height:auth;
    display:block;   
}

.menu-btn{
    width:32px;
    height:24px;
    cursor:pointer;
    display:flex;
    flex-direction:column;
    justify-content:space-between;
}

.menu-btn span{
    height:2px;
    width:100%;
    background:#fff;
    display:block;
}

/* =========================
MENU
========================= */

.menu{
    position:fixed;
    inset:0;
    background:rgba(15,23,42,.97);
    z-index:998;

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

    opacity:0;
    visibility:hidden;
    transition:.4s;
}

.menu.active{
    opacity:1;
    visibility:visible;
}

.menu ul{
    list-style:none;
    text-align:center;
}

.menu li{
    margin:20px 0;
}

.menu a{
    text-decoration:none;
    color:#fff;
    font-size:1.3rem;
    letter-spacing:2px;
    font-family:'Montserrat',sans-serif;
}

/* =========================
FV
========================= */

.fv{
    height:100vh;
    position:relative;
    overflow:hidden;
}

.fv-bg{
    position:absolute;
    inset:0;
    background:url('img/mainimg.jpg') center center / cover;
    transform:scale(1.05);
}

.fv-overlay{
    position:absolute;
    inset:0;
    background:rgba(0,0,0,.25);
}

.fv-content{
    position:absolute;
    left:8%;
    bottom:14%;
    z-index:10;
    color:#fff;
}

.fv-logo{
    width:220px;
    max-width:60vw;
    margin-bottom:50px;
}

.fv-title{
    font-size:3rem;
    line-height:1.5;
    font-weight:300;
    margin-bottom:12px;
}

.fv-sub{
    font-size:1rem;
    opacity:.9;
    letter-spacing:1px;
}

.scroll{
    position:absolute;
    bottom:30px;
    left:50%;
    transform:translateX(-50%);
    color:#fff;
    font-size:.8rem;
    letter-spacing:4px;
    z-index:10;
    animation:float 2s ease-in-out infinite;
}

@keyframes float{
    0%,100%{
        transform:translateX(-50%) translateY(0);
    }
    50%{
        transform:translateX(-50%) translateY(10px);
    }
}


/* =========================
SP
========================= */

@media(max-width:768px){

    .header-logo img{
        width:90px;
    }

    .fv-content{
        left:8%;
        right:8%;
        bottom:16%;
    }

    .fv-logo{
        width:180px;
    }

    .fv-title{
        font-size:2.2rem;
    }

    .fv-sub{
        font-size:.95rem;
    }

}

/* =========================
COMMON
========================= */
.container{
    width:min(1100px,90%);
    margin:auto;
}
.section-label{
    display:block;
    font-size:.8rem;
    letter-spacing:3px;
    color:#6B7280;
    margin-bottom:24px;
    font-family:'Montserrat',sans-serif;
}
/* =========================
CONCEPT
========================= */
.concept{
    padding:120px 0;
    background:#fff;
}
.concept-title{
    font-size:clamp(2rem,4vw,3rem);
    font-weight:300;
    line-height:1.4;
    color:#111;
    margin-bottom:50px;
}
.concept-text{
    max-width:650px;
    font-size:1.1rem;
    line-height:2.2;
    color:#222;
    font-weight:300;
}
.concept-line{
    width:80px;
    height:1px;
    background:#0F172A;
    margin-bottom:50px;
}
.concept-lead{
    font-size:1.5rem;
    line-height:1.8;
    color:#111;
    margin-bottom:60px;
    max-width:700px;
    font-weight:300;
}
.concept-closing{
    margin-top:60px;
    color:#111;
    font-size:1.4rem;
    font-weight:300;
}

@media(max-width:768px){
    .concept{
        padding:90px 0;
    }
    .concept-title{
        margin-bottom:35px;
    }
    .concept-text{
        line-height:2;
    }
}

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

.about{
    padding:140px 0;
    background:#f8f8f8;
}

.about-title{
    font-size:clamp(2rem,4vw,3rem);
    font-weight:300;
    line-height:1.6;
    margin-bottom:40px;
    color:#111;
}

.about-line{
    width:80px;
    height:1px;
    background:#0F172A;
    margin-bottom:50px;
}

.about-text{
    max-width:700px;
    font-size:1.1rem;
    line-height:2.2;
    color:#333;
    font-weight:300;
}

@media(max-width:768px){

    .about{
        padding:90px 0;
    }

    .about-text{
        font-size:1rem;
        line-height:2;
    }

}
/* =========================
SERVICE
========================= */

.service{

    background:#f8f8f8;
    padding:120px 0;

}

.service-grid{

    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:35px;
    margin-top:60px;

}

.service-card{

    background:#fff;
    padding:55px 40px;
    border-radius:18px;
    transition:.35s;
    text-align:center;

}

.service-card:hover{

    transform:translateY(-8px);

}

.service-card img{

    width:56px;
    margin-bottom:35px;

}

.service-card h3{

    font-size:1.4rem;
    font-weight:400;
    margin-bottom:25px;

}

.service-line{

    width:60px;
    height:1px;
    background:#0F172A;
    margin:0 auto 30px;

}

.service-card p{

    color:#555;
    line-height:2;

}

@media(max-width:768px){

.service{

padding:90px 0;

}

.service-grid{

grid-template-columns:1fr;

}

.service-card{

padding:45px 30px;

}

}

/* ========================================
   MESSAGE
======================================== */

.message{

    position:relative;
    height:90vh;
    min-height:650px;

    background:url("img/message.jpg") center center / cover;

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

}

.message-overlay{

    position:absolute;
    inset:0;

    background:rgba(0,0,0,.35);

}

.message-content{

    position:relative;

    color:#fff;

    text-align:center;

    z-index:2;

}

.white{

    color:rgba(255,255,255,.7);

}

.message h2{

    font-size:clamp(2.2rem,5vw,4.5rem);

    font-weight:300;

    line-height:1.5;

    margin:25px 0;

}

.message p{

    font-size:1.15rem;

    line-height:2;

    color:rgba(255,255,255,.85);

    margin-bottom:50px;

}


@media(max-width:768px){

.message{

height:75vh;

min-height:550px;

}

.message h2{

font-size:2.4rem;

}

.message p{

font-size:1rem;

}

}

/* ========================================
   VISION
======================================== */

.vision{

    padding:120px 0;
    background:#fff;

}

.vision-grid{

    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;

    margin:60px 0;

}

.vision-grid img{

    width:100%;
    aspect-ratio:4/5;

    object-fit:cover;

    border-radius:18px;

    transition:.4s;

}

.vision-grid img:hover{

    transform:translateY(-8px);

}

.vision-text{

    max-width:700px;

    margin:auto;

    text-align:center;

    line-height:2.2;

    color:#555;

}

@media(max-width:768px){

.vision{

padding:90px 0;

}

.vision-grid{

grid-template-columns:1fr;

gap:18px;

}

.vision-grid img{

aspect-ratio:16/10;

}

}

/* ========================================
   WORKS
======================================== */

.works{

    background:#f8f8f8;
    padding:120px 0;

}

.works-lead{

    text-align:center;

    color:#666;

    line-height:2;

    margin:35px auto 60px;

    max-width:700px;

}

.works-image{

    max-width:900px;

    margin:auto;

    overflow:hidden;

    border-radius:20px;

}

.works-image img{

    width:100%;

    display:block;

    transition:.4s;

}

.works-image img:hover{

    transform:scale(1.02);

}

@media(max-width:768px){

.works{

padding:90px 0;

}

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

.faq{

    padding:120px 0;
    background:#fff;

}

.faq-list{

    max-width:900px;
    margin:60px auto 0;

}

.faq-item{

    border-bottom:1px solid #e5e5e5;

}

.faq-question{

    width:100%;

    background:none;
    border:none;

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

    padding:28px 0;

    cursor:pointer;

    font-size:1.1rem;
    font-weight:400;

    color:#111;

}

.faq-question span{

    font-size:1.6rem;

    transition:.3s;

}

.faq-answer{

    max-height:0;

    overflow:hidden;

    transition:.35s ease;

}

.faq-answer p{

    padding:0 0 28px;

    color:#666;

    line-height:2;

}

.faq-item.active .faq-answer{

    max-height:300px;

}

.faq-item.active .faq-question span{

    transform:rotate(45deg);

}

@media(max-width:768px){

.faq{

padding:90px 0;

}

.faq-question{

font-size:1rem;

}

}

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

.contact{

    background:#0F172A;
    color:#fff;
    padding:120px 0;

}

.contact .section-label{

    color:rgba(255,255,255,.6);

}

.contact .section-title{

    color:#fff;

}

.contact-text{

    text-align:center;
    line-height:2.2;

    color:rgba(255,255,255,.85);

    max-width:700px;

    margin:40px auto 70px;

}

.contact-buttons{

    display:flex;
    flex-direction:column;

    gap:20px;

    max-width:420px;

    margin:auto;

}

.contact-btn{

    display:block;

    text-align:center;

    padding:20px;

    border:1px solid rgba(255,255,255,.4);

    color:#fff;

    text-decoration:none;

    transition:.35s;

    border-radius:12px;

}

.contact-btn:hover{

    background:#fff;

    color:#0F172A;

}

@media(max-width:768px){

.contact{

padding:90px 0;

}

}

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

.footer{

    background:#09111F;

    color:rgba(255,255,255,.8);

    padding:70px 0 40px;

    text-align:center;

}

.footer-logo{

    width:160px;

    margin-bottom:30px;

}

.footer-copy{

    color:rgba(255,255,255,.7);

    margin-bottom:45px;

    letter-spacing:2px;

}

.footer-nav{

    display:flex;

    justify-content:center;

    flex-wrap:wrap;

    gap:28px;

    margin-bottom:45px;

}

.footer-nav a{

    color:rgba(255,255,255,.75);

    text-decoration:none;

    font-size:.9rem;

    transition:.3s;

}

.footer-nav a:hover{

    color:#fff;

}

.footer-info{

    margin-bottom:30px;

    line-height:2;

    color:rgba(255,255,255,.55);

    font-size:.9rem;

}

.footer small{

    color:rgba(255,255,255,.4);

    font-size:.8rem;

}

@media(max-width:768px){

.footer{

padding:60px 0 30px;

}

.footer-nav{

gap:18px;

}

.footer-logo{

width:120px;

}

}