/* ------------------------------
   SHINOBI TECH
-------------------------------- */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: #171717;
    background: #fff;
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Helvetica Neue",
        "Yu Gothic",
        "YuGothic",
        "Hiragino Kaku Gothic ProN",
        Meiryo,
        sans-serif;
    line-height: 1.9;
    letter-spacing: .04em;
}

a {
    color: inherit;
    text-decoration: none;
}

.st-container {
    width: min(1100px, calc(100% - 48px));
    margin: 0 auto;
}


/* HEADER
-------------------------------- */

.st-header {
    position: relative;
    z-index: 10;
    background: #fff;
    border-bottom: 1px solid #eee;
}

.st-header__inner {
    width: min(1200px, calc(100% - 48px));
    height: 86px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.st-logo {
    display: flex;
    align-items: center;
    gap: 13px;
}

.st-logo__mark {
    display: flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: #111;
    font-size: 16px;
    transform: rotate(45deg);
}

.st-logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.st-logo__text strong {
    font-size: 18px;
    letter-spacing: .1em;
}

.st-logo__text small {
    margin-top: 6px;
    color: #888;
    font-size: 9px;
    letter-spacing: .22em;
}

.st-nav {
    display: flex;
    gap: 36px;
}

.st-nav a {
    position: relative;
    font-size: 13px;
    font-weight: 600;
}

.st-nav a::after {
    position: absolute;
    right: 0;
    bottom: -7px;
    left: 0;
    height: 1px;
    content: "";
    background: #111;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform .3s;
}

.st-nav a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}


/* HERO
-------------------------------- */

.st-hero {
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(
            90deg,
            #f5f5f5 0%,
            #fff 70%
        );
}

.st-hero::after {
    position: absolute;
    top: 50%;
    right: -100px;
    width: 500px;
    height: 500px;
    content: "";
    border: 1px solid #e5e5e5;
    transform: translateY(-50%) rotate(45deg);
}

.st-hero__inner {
    position: relative;
    z-index: 2;
    width: min(1100px, calc(100% - 48px));
    margin: 0 auto;
    padding: 135px 0 145px;
}

.st-hero__label {
    margin: 0 0 25px;
    color: #888;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .25em;
}

.st-hero h1 {
    margin: 0;
    font-size: clamp(40px, 6vw, 76px);
    line-height: 1.3;
    letter-spacing: .02em;
}

.st-hero h1 span {
    color: #777;
}

.st-hero__lead {
    max-width: 620px;
    margin: 35px 0;
    color: #555;
    font-size: 15px;
}

.st-button {
    display: inline-flex;
    min-width: 210px;
    min-height: 56px;
    align-items: center;
    justify-content: center;
    margin-top: 10px;
    color: #fff;
    background: #111;
    font-size: 13px;
    font-weight: bold;
    transition: .3s;
}

.st-button:hover {
    opacity: .75;
}


/* SECTION
-------------------------------- */

.st-section {
    padding: 120px 0;
}

.st-section-label {
    margin: 0 0 15px;
    color: #999;
    font-size: 10px;
    font-weight: bold;
    letter-spacing: .28em;
}

.st-section-label--white {
    color: #888;
}

.st-section h2,
.st-concept h2,
.st-contact h2 {
    margin: 0 0 55px;
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.5;
    letter-spacing: .04em;
}


/* INTRO
-------------------------------- */

.st-intro__text {
    max-width: 780px;
    margin-left: auto;
}

.st-intro__text p {
    margin: 0 0 25px;
}


/* BUSINESS
-------------------------------- */

.st-business {
    background: #f7f7f7;
}

.st-business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid #ddd;
    border-left: 1px solid #ddd;
}

.st-business-card {
    min-height: 310px;
    padding: 40px;
    background: #fff;
    border-right: 1px solid #ddd;
    border-bottom: 1px solid #ddd;
}

.st-business-card__number {
    margin: 0 0 45px;
    color: #aaa;
    font-size: 11px;
    letter-spacing: .1em;
}

.st-business-card h3 {
    margin: 0 0 20px;
    font-size: 21px;
    line-height: 1.6;
}

.st-business-card p {
    margin: 0;
    color: #666;
    font-size: 13px;
}


/* CONCEPT
-------------------------------- */

.st-concept {
    padding: 110px 0;
    color: #fff;
    background: #111;
}

.st-concept__box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
}

.st-concept h2 {
    margin-bottom: 0;
}

.st-concept__text {
    color: #ccc;
    font-size: 14px;
}

.st-concept__text p {
    margin: 0 0 24px;
}


/* COMPANY
-------------------------------- */

.st-company-table {
    margin: 0;
    border-top: 1px solid #ddd;
}

.st-company-table > div {
    display: grid;
    grid-template-columns: 220px 1fr;
    border-bottom: 1px solid #ddd;
}

.st-company-table dt,
.st-company-table dd {
    margin: 0;
    padding: 28px 20px;
}

.st-company-table dt {
    font-weight: bold;
}

.st-company-table dd {
    color: #555;
}


/* CONTACT
-------------------------------- */

.st-contact {
    padding: 110px 0;
    color: #fff;
    background: #1b1b1b;
}

.st-contact h2 {
    margin-bottom: 25px;
}

.st-contact__text {
    margin-bottom: 40px;
    color: #bbb;
}

.st-contact__box {
    max-width: 650px;
    padding: 35px 40px;
    border: 1px solid #444;
    color: #ccc;
    font-size: 13px;
}

.st-contact__company {
    margin-top: 0;
    color: #fff;
    font-size: 17px;
    font-weight: bold;
}


/* FOOTER
-------------------------------- */

.st-footer {
    padding: 42px 0;
    color: #777;
    background: #0d0d0d;
}

.st-footer .st-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.st-footer__logo {
    color: #fff;
    font-weight: bold;
}

.st-footer__logo small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 9px;
    letter-spacing: .15em;
}

.st-footer__copy {
    margin: 0;
    font-size: 10px;
}


/* RESPONSIVE
-------------------------------- */

@media (max-width: 800px) {

    .st-container,
    .st-header__inner,
    .st-hero__inner {
        width: min(100% - 32px, 1100px);
    }

    .st-header__inner {
        height: 72px;
    }

    .st-nav {
        display: none;
    }

    .st-hero__inner {
        padding: 90px 0 100px;
    }

    .st-hero::after {
        right: -260px;
    }

    .st-section {
        padding: 80px 0;
    }

    .st-business-grid {
        grid-template-columns: 1fr;
    }

    .st-business-card {
        min-height: auto;
        padding: 32px 25px;
    }

    .st-business-card__number {
        margin-bottom: 25px;
    }

    .st-concept {
        padding: 80px 0;
    }

    .st-concept__box {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .st-company-table > div {
        grid-template-columns: 1fr;
    }

    .st-company-table dt {
        padding: 20px 10px 5px;
    }

    .st-company-table dd {
        padding: 5px 10px 20px;
    }

    .st-footer .st-container {
        display: block;
    }

    .st-footer__copy {
        margin-top: 25px;
    }

}