.fv {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background-color: #000;
}

.fv-image-wrap {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.fv-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    animation: fvSlideAnime 30s infinite;
}

.fv-img:nth-child(1) {
    animation-delay: 0s;
}

.fv-img:nth-child(2) {
    animation-delay: 5s;
}

.fv-img:nth-child(3) {
    animation-delay: 10s;
}

.fv-img:nth-child(4) {
    animation-delay: 15s;
}

.fv-img:nth-child(5) {
    animation-delay: 20s;
}

.fv-img:nth-child(6) {
    animation-delay: 25s;
}

@keyframes fvSlideAnime {
    0% {
        opacity: 0;
        transform: scale(1);
    }

    5% {
        opacity: 1;
    }

    17% {
        opacity: 1;
    }

    22% {
        opacity: 0;
    }

    100% {
        opacity: 0;
        transform: scale(1.15);
    }
}

.fv-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(40, 40, 53, 0.8);
    ;
    z-index: 2;
}

.fv-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    color: var(--white);
    text-align: center;
    width: 90%;
    max-width: 800px;
}

.fv-copy {
    font-family: "Yu Mincho", "YuMincho", serif;
    font-size: clamp(24px, 4vw, 48px);
    line-height: 1.8;
    font-weight: 500;
    margin-bottom: 30px;
}

.fv-copy-highlight {
    background-color: var(--white);
    color: #434952;
    padding: 0 15px;
    margin: 0 5px;
    display: inline-block;
    line-height: 1.4;
}

.fv-lead {
    font-size: clamp(14px, 1.2vw, 18px);
    line-height: 2.2;
    color: var(--white);
    font-weight: 500;
    letter-spacing: 0.1em;
}

.fv-scroll {
    position: absolute;
    bottom: 0;
    right: 5%;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.fv-scroll-text {
    color: var(--white);
    font-size: 10px;
    letter-spacing: 0.2em;
    writing-mode: vertical-rl;
    margin-bottom: 10px;
}

.fv-scroll-line {
    width: 1px;
    height: 100px;
    background: rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.fv-scroll-line::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    animation: scrollLineMove 2.5s infinite;
}

@keyframes scrollLineMove {
    0% {
        transform: translateY(-100%);
    }

    100% {
        transform: translateY(100%);
    }
}

.home-intro {
    padding: 100px 0;
    background-color: var(--white);
}

.home-intro__inner {
    max-width: 100%;
    margin: 0 auto;
    position: relative;
    display: flex;
    align-items: flex-start;
    padding: 0px;
}

.home-intro__main-visual {
    width: 35%;
    position: relative;
    z-index: 2;
    flex-shrink: 0;
}

.home-intro__main-visual .img-wrapper img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    display: block;
}

.deco-brick {
    position: absolute;
    top: -40px;
    right: -30px;
    width: 120px;
}

.home-intro__content {
    background-color: var(--bg);
    width: 70%;
    margin-left: -15%;
    margin-top: 80px;
    padding: 100px 5% 100px 20%;
    position: relative;
    z-index: 1;
}

.intro-title {
    font-family: "Shippori Mincho", serif;
    font-size: clamp(18px, 2.1vw + 8px, 32px);
    line-height: 1.6;
    margin-bottom: 30px;
    color: var(--text);
}

.intro-text {
    font-size: clamp(14px, 1vw + 10px, 16px);
    line-height: 2;
    color: var(--text);
    margin-bottom: 40px;
}

.btn-more {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: var(--text);
    font-weight: bold;
    transition: all 0.3s ease;
    font-size: clamp(14px, 1vw + 10px, 16px);
}

.btn-more span:first-child {
    border-bottom: 1px solid var(--text);
    padding-bottom: 1px;
    transition: all 0.3s ease;
}

.btn-more .icon-arrow {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: var(--text);
    border: 2px solid var(--text);
    border-radius: 50%;
    margin-left: 15px;
    position: relative;
    transition: all 0.3s ease;
}

.btn-more .icon-arrow::after {
    content: '→';
    color: var(--white);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(14px, 1vw + 10px, 16px);
    transition: all 0.3s ease;
}

.btn-more:hover {
    color: var(--accent);
}

.btn-more:hover .icon-arrow {
    background-color: #d1d6ec;
    border-color: var(--text);
}

.btn-more:hover .icon-arrow::after {
    color: var(--text);
}

.home-intro__sub-visual {
    position: absolute;
    right: 0;
    bottom: -180px;
    width: 50%;
    z-index: 3;
}

.home-intro__sub-visual .img-wrapper img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

.deco-group {
    position: absolute;
    top: -90px;
    right: 6%;
    display: flex;
    align-items: flex-end;
    gap: 0px;
    pointer-events: none;
}

.svg-deco {
    position: relative;
    color: var(--bg);
}

.svg-deco svg {
    width: 100%;
    height: auto;
}

.deco-tree-large {
    width: 65px;
}

.deco-tree-small {
    top: -10px;
    width: 55px;
    margin-left: -15px;
}

.svg-deco svg path {
    stroke-width: 5px;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.deco-sofa {
    position: absolute;
    left: -120px;
    bottom: 20px;
    width: 140px;
}

.reason-section {
    padding: 150px 0px 5px 0px;
    background-color: var(--white);
}

.reason-inner {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
}

.reason-header {
    text-align: center;
    margin-bottom: 80px;
}

.reason-ja {
    text-align: left;
    font-family: "Yu Mincho", "YuMincho", serif;
    font-size: clamp(18px, 2.1vw + 8px, 32px);
    color: var(--text);
    margin-bottom: 30px;
    font-weight: 700;
    width: fit-content;
    position: relative;
    padding-bottom: 3px;
}

.reason-ja::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 103%;
    height: 1px; 
    background-color: var(--text);
}

.reason-row {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 100px;
}

.reason-row:nth-of-type(even) {
    flex-direction: row-reverse;
}

.reason-image {
    flex: 0.8;
}

.reason-image img {
    width: 100%;
    height: auto;
    display: block;
}

.reason-text-content {
    flex: 1;
    padding: 20px;
    border: 1px solid #ccc;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.reason-badge {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 75px;
    height: 75px;
    background-color: #9d9db3;
    color: var(--white);
    border-radius: 50% 50% 0 50%;
    margin-bottom: 15px;
    position: relative;
}

.reason-badge span {
    font-size: 12px;
    letter-spacing: 0.05em;
    margin-bottom: -2px;
    font-weight: 400;
}

.reason-badge strong {
    font-size: 28px;
    font-family: "Helvetica Neue", Arial, sans-serif;
    font-weight: 200;
    line-height: 1;
    transform: scaleX(0.8) scaleY(1.1);
    display: block;
}

.reason-h {
    font-family: "Yu Mincho", "YuMincho", serif;
    font-size: clamp(18px, 1vw + 14px, 24px);
    color: var(--text);
    padding-bottom: clamp(10px, 1vw + 5px, 15px);
    border-bottom: 1px solid var(--accent);
    line-height: 1;
    font-weight: 700;
}

.reason-p {
    text-align: left;
    font-size: clamp(14px, 1vw + 10px, 16px);
    line-height: 1.8;
    color: var(--text);
    opacity: 0.9;
}

.service-section {
    background-color: var(--F0F2F5);
    padding: 60px 40px 100px 40px;
}

.service-inner {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
}

.service-header {
    text-align: center;
    margin-bottom: 40px;
}

.service-ja {
    text-align: center;
    font-family: "Yu Mincho", "YuMincho", serif;
    font-size: clamp(18px, 2.1vw + 8px, 32px);
    color: var(--text);
    margin-bottom: 30px;
    font-weight: 700;
}

.service-list {
    display: flex;
    gap: 30px;
    justify-content: center;
}

.service-item {
    flex: 1;
    background-color: transparent;
    border: 1px solid var(--primary);
    display: flex;
    flex-direction: column;
    padding: 5px;
}

.service-item-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.service-item-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-item-body {
    padding: 20px 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.service-item-title {
    font-size: clamp(15px, 1vw + 10px, 17px);
    color: var(--text);
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--primary);
    font-weight: bold;
}

.service-item-text {
    font-size: clamp(14px, 1vw + 10px, 16px);
    line-height: 1.8;
    color: var(--text);
    margin-bottom: 30px;
}

.service-item-btn {
    margin-top: auto;
    display: flex;
    justify-content: flex-end;
}

.customer-section {
    padding: 60px 40px 120px 40px;
    background-color: var(--white);
}

.customer-inner {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
}

.customer-header {
    text-align: center;
    margin-bottom: 30px;
}

.customer-ja {
    text-align: center;
    font-family: "Yu Mincho", "YuMincho", serif;
    font-size: clamp(18px, 2.1vw + 8px, 32px);
    color: var(--text);
    margin-bottom: 30px;
    font-weight: 700;
}

.customer-category {
    margin-bottom: 5px;
}

.customer-category-title {
    color: var(--text);
    font-size: clamp(17px, 1vw + 12px, 22px);
    font-weight: bold;
    border-bottom: 1.5px solid var(--text);
    display: block;
    letter-spacing: 0.05em;
    margin-top: 30px;
    margin-bottom: 0px;
}

.customer-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.customer-item {
    background-color: var(--bg);
    padding: 15px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    border-bottom: 1px solid var(--subtext);
}

.customer-icon {
    flex: 0 0 45px;
    width: 60px;
    height: 60px;
}

.customer-icon svg {
    width: 100%;
    height: 100%;
}

.customer-text {
    flex: 1;
    font-size: clamp(14px, 1vw + 10px, 16px);
    line-height: 1.7;
    color: var(--text);
    margin: 0;
}

.construction-section {
    position: relative;
    padding: 50px 0 60px 0;
    overflow: hidden;
}

.construction-inner {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.construction-header {
    text-align: center;
    margin-bottom: 40px;
}

.construction-ja {
    font-family: "Yu Mincho", "YuMincho", serif;
    font-size: clamp(24px, 2.1vw + 10px, 32px);
    color: var(--text);
    font-weight: 700;
}

.construction-line {
    width: 100%;
    height: 1px;
    background-color: var(--text);
    margin: 30px 0;
    opacity: 0.5;
}

.construction-footer {
    display: flex;
    justify-content: center;
    align-items: center;
}

.faq-section {
    padding: 60px 40px 110px 40px;
    background-color: var(--white);
}

.faq-inner {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
}

.faq-main-title {
    text-align: left;
    font-family: "Yu Mincho", "YuMincho", serif;
    font-size: clamp(18px, 2.1vw + 8px, 32px);
    color: var(--text);
    margin-bottom: 30px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-question {
    width: 100%;
    background-color: #b6c3d5;
    color: var(--text);
    border: none;
    padding: 15px 30px;
    display: flex;
    align-items: center;
    cursor: pointer;
    text-align: left;
    position: relative;
    transition: background-color 0.3s;
}

.q-prefix {
    font-size: clamp(18px, 1vw + 10px, 20px);
    font-family: serif;
    margin-right: 10px;
    font-weight: bold;
    color: var(--text);
}

.q-text {
    font-size: clamp(14px, 1vw + 10px, 16px);
    font-weight: bold;
    flex: 1;
}

.arrow {
    width: 12px;
    height: 12px;
    border-right: 2px solid var(--text);
    border-bottom: 2px solid var(--text);
    transform: rotate(45deg);
    transition: transform 0.3s;
    margin-left: 10px;
    margin-top: -5px;
}

.faq-item.is-open .arrow {
    transform: rotate(-135deg);
    margin-top: 5px;
}

.faq-answer {
    height: 0;
    overflow: hidden;
    transition: height 0.3s ease-in-out;
    background-color: #eff4f9;
}

.faq-answer-content {
    padding: 20px;
    line-height: 1.5;
    font-size: clamp(14px, 1vw + 10px, 16px);
    border-top: none;
}

.site-margin {
    margin-top: 50px;
}



@media (max-width: 850px) {
    .reason-header {
        margin-bottom: 20px;
    }

    .reason-row,
    .reason-row:nth-of-type(even) {
        flex-direction: column-reverse;
        gap: 30px;
        margin-bottom: 70px;
    }

    .reason-image {
        width: 100%;
        height: 180px;
        flex: none;
        overflow: hidden;
    }

    .reason-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .reason-text-content {
        width: 100%;
        height: auto;
        overflow: visible;
    }

    .reason-badge {
        width: 60px;
        height: 60px;
        margin-bottom: 15px;
    }

    .reason-h {
        font-size: 20px;
    }

    .home-intro__inner {
        flex-direction: column;
        padding: 0;
    }

    .home-intro__main-visual {
        width: 60%;
        margin-bottom: 0;
        z-index: 2;
    }

    .home-intro__main-visual .img-wrapper img {
        height: 250px;
    }

    .home-intro__content {
        width: 75%;
        margin-left: auto;
        margin-right: 0;
        margin-top: -80px;
        padding: 100px 20px 60px 30px;
        z-index: 1;
    }

    .home-intro__sub-visual {
        width: 60%;
        align-self: flex-end;
        margin-top: -210px;
        position: relative;
        z-index: 3;
    }

    .home-intro__sub-visual .img-wrapper img {
        height: 250px;
    }

    .deco-group {
        right: 3%;
    }

    .customer-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .faq-main-title {
        margin-bottom: 20px;
    }
}



@media (max-width: 600px) {

    .fv-copy {
        margin-bottom: 10px;
    }

    .fv-lead {
        font-size: 13px;
    }

    .home-intro {
        padding: 50px 0;
    }

    .home-intro__main-visual {
        width: 70%;
    }

    .home-intro__main-visual .img-wrapper img {
        height: 150px;
    }

    .home-intro__content {
        padding: 80px 20px 60px 20px;
    }

    .deco-group {
        right: 2px;
        top: -67px;
    }

    .deco-tree-large {
        width: 45px;
    }

    .deco-tree-small {
        top: 0;
        width: 40px;
        margin-left: -10px;
    }

    .intro-title {
        font-size: 16px;
        margin-bottom: 20px;
    }

    .intro-text {
        font-size: 13px;
        margin-bottom: 20px;
    }

    .btn-more {
        font-size: 13px;
    }

    .btn-more .icon-arrow {
        width: 25px;
        height: 25px;
        margin-left: 10px;
    }

    .btn-more .icon-arrow::after {
        top: 45%;
    }

    .home-intro__sub-visual .img-wrapper img {
        height: 130px;
    }

    .home-intro__sub-visual {
        margin-top: -220px;
    }

    .reason-header {
        margin-bottom: 20px;
    }

    .reason-section {
        padding: 150px 0px 5px 0px;
    }

    .reason-ja {
        font-size: 20px;
        margin-bottom: 0;
    }

    .reason-row,
    .reason-row:nth-of-type(even) {
        gap: 10px;
        margin-bottom: 40px;
    }

    .reason-image {
        height: 160px;
    }

    .reason-badge {
        width: 50px;
        height: 50px;
        margin-bottom: 0px;
    }

    .reason-badge span {
        font-size: 9px;
        margin-bottom: 0px;
    }

    .reason-badge strong {
        font-size: 20px;
    }

    .reason-text-content {
        padding: 8px;
    }

    .reason-h {
        font-size: 17px;
    }

    .reason-p {
        font-size: 13px;
    }

    .service-ja {
        font-size: 20px;
        margin-bottom: 0;
    }

    .service-list {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }

    .service-item {
        width: 95%;
        margin: 0 auto;
    }

    .service-section {
        padding: 20px 0;
    }

    .service-header {
        margin-bottom: 20px;
    }

    .service-item-title {
        padding-bottom: 5px;
    }

    .service-item-body {
        padding: 0 10px 15px 10px;
    }

    .service-item-text {
        margin-bottom: 20px;
        font-size: 13px;
    }

    .cta-home-margin {
        margin-top: 15px;
    }

    .customer-section {
        padding: 30px 20px 80px 20px;
    }

    .customer-ja {
        font-size: 20px;
        margin-bottom: 0;
    }

    .customer-header {
        margin-bottom: 10px;
    }

    .customer-category-title {
        font-size: 16px;
        margin-top: 15px;
    }

    .customer-list {
        gap: 8px;
    }

    .customer-item {
        flex-direction: column;
        align-items: center;
        padding: 10px;
        gap: 8px;
    }

    .customer-icon {
        flex: 0 0 35px;
        width: 40px;
        height: 40px;
    }

    .construction-section {
        padding: 20px 0 30px 0;
    }

    .construction-header {
        margin-bottom: 0px;
    }

    .construction-ja {
        font-size: 20px;
    }

    .construction-line {
        margin: 18px 0;
    }

    .btn-more-text {
        font-size: 13px;
        margin-right: 10px;
    }

    .btn-more-circle {
        width: 35px;
        height: 35px;
        font-size: 17px;
    }

    .faq-section {
        padding: 30px 10px 60px 10px;
    }

    .faq-main-title {
        margin-bottom: 10px;
        font-size: 19px;
    }

    .faq-list {
        gap: 10px;
    }

    .faq-question {
        padding: 10px 20px;
    }

    .q-prefix {
        font-size: 15px;
    }

    .q-text {
        font-size: 13px;
    }

    .arrow {
        width: 10px;
        height: 10px;
    }

    .faq-answer-content {
        padding: 15px;
        font-size: 13px;
    }

    .site-margin {
        margin-top: 30px;
    }
}