@charset "UTF-8";

/* Reset / Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border-radius: 0;
}

body {
    font-family: "Noto Sans JP", sans-serif;
    color: #1a1a1a;
    background-color: #ffffff;
    line-height: 2.2;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
}

/* Layout */
.l-container {
    max-width: 1170px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 15px;
    padding-right: 15px;
    width: 100%;
}

@media (min-width: 768px) {
    .l-container {
        max-width: 1170px;
    }
}

.l-main {
    overflow: hidden;
}

.u-pc-only-br {
    display: none;
}

@media (min-width: 1025px) {
    .u-pc-only-br {
        display: block;
    }
}

/* Components */
.c-highlight-box {
    background-color: #1a1a1a;
    color: #ffffff;
    padding: 0.1em 0.5em;
    display: inline-block;
}

.u-color-brand {
    color: #DE5902;
    font-weight: 700;
}

.c-section-number {
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.2);
    line-height: 1;
    font-weight: 900;
    font-family: "Noto Sans JP", sans-serif;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

/* Project specific blocks */
.p-concept-intro {
    padding-top: 40px;
    padding-bottom: 0;
    padding-left: 20px;
    padding-right: 20px;
    margin-top: 40px;
}

@media (min-width: 768px) {
    .p-concept-intro {
        padding-top: 96px;
        margin-top: 80px;
    }
}

.p-concept-intro__inner {
    max-width: 1024px;
    margin: 0 auto;
}

.p-concept-intro__title {
    font-weight: 500;
    letter-spacing: 0.1em;
    font-size: 18px;
    text-align: center;
    color: #1c1917;
    display: flex;
    flex-direction: column;
    align-items: center;
}

@media (min-width: 768px) {
    .p-concept-intro__title {
        font-size: 36px;
    }
}

.p-concept-intro__title>span {
    display: block;
    white-space: nowrap;
}

.p-concept-intro__title>span+span {
    margin-top: 1.2em;
}


.p-concept-intro__logo {
    width: 150px;
    height: auto;
    margin-bottom: 30px;
}

@media (min-width: 768px) {
    .p-concept-intro__logo {
        width: 300px;
        height: auto;
        margin-bottom: 50px;
    }
}

.p-concept-intro__accent {
    display: inline;
    color: #DE5902;
}

.p-concept-intro__subtitle {
    color: #a8a29e;
    font-size: 10px;
    margin-top: 48px;
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    white-space: nowrap;
}

@media (min-width: 480px) {
    .p-concept-intro__subtitle {
        font-size: 12px;
    }
}

@media (min-width: 768px) {
    .p-concept-intro__subtitle {
        font-size: 20px;
        letter-spacing: 0.5em;
    }
}

.p-visual {
    padding-top: 40px;
    position: relative;
}

@media (min-width: 768px) {
    .p-visual {
        padding-top: 96px;
    }
}

.p-visual__inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (min-width: 1024px) {
    .p-visual__inner {
        padding: 0;
    }
}

.p-visual__image-wrapper {
    margin-left: calc(50% - 50vw);
    height: 450px;
    overflow: hidden;
}

@media (min-width: 768px) {
    .p-visual__image-wrapper {
        height: 700px;
    }
}

.p-visual__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}


.p-concept-detail {
    padding-top: 40px;
    padding-bottom: 40px;
    padding-left: 20px;
    padding-right: 20px;
}

@media (min-width: 768px) {
    .p-concept-detail {
        padding-top: 96px;
        padding-bottom: 96px;
    }
}

.p-concept-detail__inner {
    max-width: 768px;
    margin: 0 auto;
}

.p-concept-detail__text-group {
    display: flex;
    flex-direction: column;
    gap: 64px;
    color: #525252;
    font-size: 15px;
    line-height: 2.6;
    letter-spacing: 0.12em;
}

@media (min-width: 768px) {
    .p-concept-detail__text-group {
        font-size: 17px;
    }
}

.p-concept-detail__lead-wrapper {
    padding-top: 0;
}

.p-concept-detail__lead {
    color: #1c1917;
    font-weight: 600;
    font-size: 20px;
    line-height: 2.8;
    letter-spacing: 0.1em;
}

@media (min-width: 768px) {
    .p-concept-detail__lead {
        font-size: 22px;
        line-height: 3.0;
    }
}

.p-reason {
    padding-top: 40px;
    padding-bottom: 40px;
    background-color: #2F2F2F;
    color: #ffffff;
}

@media (min-width: 768px) {
    .p-reason {
        padding-top: 96px;
        padding-bottom: 96px;
    }
}

.p-reason__inner {
    max-width: 1152px;
    margin: 0 auto;
    padding: 0 20px;
}

.p-reason__header {
    display: flex;
    flex-direction: column;
    margin-bottom: 64px;
}

@media (min-width: 768px) {
    .p-reason__header {
        margin-bottom: 80px;
    }
}

.p-reason__label {
    font-size: 12px;
    font-weight: 700;
    line-height: 24px;
    letter-spacing: 0.3em;
    color: rgba(255, 255, 255, 0.3);
    text-transform: uppercase;
    display: block;
    margin-bottom: 16px;
}

.p-reason__title {
    font-weight: 500;
    letter-spacing: 0.1em;
    font-size: 24px;
    line-height: 38px;
}

@media (min-width: 768px) {
    .p-reason__title {
        font-size: 36px;
        line-height: 48px;
    }
}

.p-reason__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 64px;
}

@media (min-width: 768px) {
    .p-reason__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
}

@media (min-width: 1024px) {
    .p-reason__grid {
        gap: 96px;
    }
}

.p-reason__item {
    position: relative;
}

.p-reason__image-wrapper {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    margin-bottom: 40px;
    background-color: #000;
}

.p-reason__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(0);
    opacity: 1;
    transition: filter 0.6s ease, transform 0.6s ease, opacity 0.6s ease;
}

@media (min-width: 768px) {
    .p-reason__image {
        filter: grayscale(0);
        opacity: 1;
    }

    .p-reason__image:hover {
        filter: grayscale(0);
        opacity: 1;
        transform: scale(1.05);
    }
}

.p-reason__item-title {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 40px;
    letter-spacing: 0.05em;
    padding-left: 32px;
    border-left: 4px solid #ffffff;
}

.p-reason__item-body {
    font-weight: 500;
    letter-spacing: 0.1em;
    font-size: 14px;
    line-height: 1.5;
    color: #a8a29e;
}

@media (min-width: 768px) {
    .p-reason__item-body {
        font-size: 16px;
        line-height: 1.6;
    }
}

/* 1. Page Header */
.page-header {
    position: relative;
    width: 100%;
    padding-top: 6rem;
    padding-bottom: 4rem;
    text-align: center;
    overflow: hidden;
    background-image: url('../../img/concept/header-bg.jpg');
    background-size: cover;
    background-position: center;
}

@media (min-width: 768px) {
    .page-header {
        padding-top: 8rem;
        padding-bottom: 5rem;
    }
}

.page-header__overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.page-header__content {
    position: relative;
    z-index: 2;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 15px;
}

.page-header__subtitle {
    color: rgba(255, 255, 255, 0.5);
    font-size: 2.25rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

@media (min-width: 768px) {
    .page-header__subtitle {
        font-size: 3.75rem;
        line-height: 1.25;
    }
}

.page-header__title-wrapper {
    position: relative;
    display: inline-block;
}

.page-header__title {
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    line-height: 24px;
    letter-spacing: 0.1em;
}

.page-header__line {
    width: 3rem;
    height: 1px;
    background-color: #fff;
    margin: 1.5rem auto 0;
}