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

html {
    scroll-behavior: smooth;
}

body {
    background: #050505;
    color: #ffffff;
    font-family: 'Noto Sans JP', sans-serif;
    overflow-x: hidden;
}

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


/* ==================================================
   OPENING
================================================== */

#opening {

    position: fixed;
    inset: 0;

    background: #050505;

    z-index: 9999;

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

    animation: openingFade 1s ease 3.2s forwards;

    pointer-events: none;
}

.opening-inner {
    text-align: center;
}

.slogan {

    font-family: 'Montserrat', sans-serif;

    font-size: clamp(18px, 3vw, 42px);

    letter-spacing: 0.08em;

    opacity: 0;

    animation:
        sloganIn 1.2s ease forwards;

}

.accent {
    color: #00e5ff;
}

.song-logo {

    margin-top: 35px;

    font-family: 'Montserrat', sans-serif;

    font-size: clamp(70px, 14vw, 180px);

    font-weight: 600;

    letter-spacing: 0.2em;

    opacity: 0;

    transform: scale(1.15);

    animation:
        songIn 1.2s ease 1.5s forwards;

}


@keyframes sloganIn {

    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }

}


@keyframes songIn {

    from {
        opacity: 0;
        transform: scale(1.15);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }

}


@keyframes openingFade {

    to {
        opacity: 0;
        visibility: hidden;
    }

}


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

.hero {

    position: relative;

    height: 100vh;

    min-height: 650px;

    overflow: hidden;

    display: flex;

    align-items: center;

    justify-content: center;

    text-align: center;

}


.hero-background {

    position: absolute;

    inset: 0;

    background-size: cover;
    background-position: center;

    opacity: 0;

    animation: backgroundChange 6s infinite;

}


.bg01 {
    background-image:
        url("../images/hero01.png");

    animation-delay: 0s;
}

.bg02 {
    background-image:
        url("../images/hero02.png");

    animation-delay: 2s;
}

.bg03 {
    background-image:
        url("../images/hero03.png");

    animation-delay: 4s;
}


@keyframes backgroundChange {

    0% {
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    30% {
        opacity: 1;
    }

    40% {
        opacity: 0;
    }

    100% {
        opacity: 0;
    }

}


.hero-overlay {

    position: absolute;

    inset: 0;

    background:
        linear-gradient(
            rgba(0,0,0,.45),
            rgba(0,0,0,.65)
        );

}


.hero-content {

    position: relative;

    z-index: 2;

}


.hero-subtitle {

    font-family: 'Montserrat', sans-serif;

    letter-spacing: .2em;

    font-size: 14px;

    margin-bottom: 25px;

}


.hero h1 {

    font-family: 'Montserrat', sans-serif;

    font-size: clamp(80px, 16vw, 220px);

    font-weight: 500;

    letter-spacing: .12em;

    line-height: .9;

}


.hero-description {

    margin-top: 30px;

    font-family: 'Montserrat', sans-serif;

    letter-spacing: .3em;

    font-size: 13px;

}


.scroll-indicator {

    position: absolute;

    bottom: 30px;

    z-index: 3;

    font-family: 'Montserrat', sans-serif;

    font-size: 10px;

    letter-spacing: .3em;

}


.scroll-indicator span {

    display: block;

    width: 1px;

    height: 50px;

    background: #fff;

    margin: 12px auto 0;

}


/* ==================================================
   NAV
================================================== */

.navigation {

    position: sticky;

    top: 0;

    z-index: 1000;

    height: 75px;

    padding: 0 5%;

    display: flex;

    align-items: center;

    justify-content: space-between;

    background: rgba(5,5,5,.85);

    backdrop-filter: blur(15px);

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

}


.nav-logo {

    font-family: 'Montserrat', sans-serif;

    font-size: 22px;

    letter-spacing: .2em;

}


.nav-links {

    display: flex;

    gap: 45px;

}


.nav-links a {

    font-family: 'Montserrat', sans-serif;

    font-size: 11px;

    letter-spacing: .15em;

    position: relative;

}


.nav-links a::after {

    content: "";

    position: absolute;

    left: 0;

    bottom: -8px;

    width: 0;

    height: 1px;

    background: #00e5ff;

    transition: .3s;

}


.nav-links a:hover::after {

    width: 100%;

}


/* ==================================================
   SECTIONS
================================================== */

.section {

    width: min(1200px, 90%);

    margin: auto;

    padding: 150px 0;

}


.section-header {

    display: flex;

    align-items: baseline;

    gap: 20px;

    margin-bottom: 80px;

}


.section-header span {

    color: #00e5ff;

    font-family: 'Montserrat', sans-serif;

    font-size: 12px;

}


.section-header h2 {

    font-family: 'Montserrat', sans-serif;

    font-size: clamp(35px, 6vw, 70px);

    font-weight: 400;

    letter-spacing: .08em;

}


/* ==================================================
   PROFILE
================================================== */

.profile-container {

    display: grid;

    grid-template-columns: 350px 1fr;

    gap: 100px;

    align-items: center;

}


.profile-left {

    text-align: center;

}


.profile-image {

    width: 280px;

    height: 280px;

    margin: auto;

    border-radius: 50%;

    overflow: hidden;

    border: 1px solid rgba(255,255,255,.3);

}


.profile-image img {

    width: 100%;

    height: 100%;

    object-fit: cover;

}


.sns-links {

    margin-top: 25px;

}


.sns-links a {

    font-size: 25px;

    transition: .3s;

}


.sns-links a:hover {

    color: #00e5ff;

}


.profile-info {

    border-top: 1px solid rgba(255,255,255,.2);

}


.profile-row {

    display: grid;

    grid-template-columns: 180px 1fr;

    padding: 22px 0;

    border-bottom: 1px solid rgba(255,255,255,.12);

}


.profile-row span {

    color: #888;

    font-family: 'Montserrat', sans-serif;

    font-size: 11px;

    letter-spacing: .15em;

}


.profile-row strong {

    font-weight: 400;

}


/* ==================================================
   BUSINESS
================================================== */

.section-lead {

    max-width: 700px;

    color: #999;

    line-height: 2;

    margin-bottom: 60px;

}


.business-grid {

    display: grid;

    grid-template-columns:
        repeat(2, 1fr);

}


.business-card {

    min-height: 300px;

    padding: 45px;

    border: 1px solid rgba(255,255,255,.12);

    transition: .4s;

}


.business-card:hover {

    background: #0d0d0d;

    border-color: #00e5ff;

    transform: translateY(-5px);

}


.business-number {

    color: #00e5ff;

    font-family: 'Montserrat', sans-serif;

}


.business-card h3 {

    margin: 45px 0 20px;

    font-family: 'Montserrat', sans-serif;

    font-size: 30px;

    letter-spacing: .08em;

}


.business-card p {

    color: #888;

    line-height: 1.9;

}


/* ==================================================
   PORTFOLIO
================================================== */

.portfolio-tabs {

    display: flex;

    gap: 35px;

    margin-bottom: 50px;

    border-bottom: 1px solid rgba(255,255,255,.15);

}


.portfolio-tab {

    border: none;

    background: none;

    color: #666;

    padding: 0 0 18px;

    cursor: pointer;

    font-family: 'Montserrat', sans-serif;

    letter-spacing: .1em;

}


.portfolio-tab.active {

    color: #fff;

    border-bottom: 1px solid #00e5ff;

}


.portfolio-grid {

    display: grid;

    grid-template-columns:
        repeat(2, 1fr);

    gap: 50px 30px;

}


.portfolio-image {

    aspect-ratio: 16 / 9;

    overflow: hidden;

}


.portfolio-image img {

    width: 100%;

    height: 100%;

    object-fit: cover;

    transition: .6s;

}


.portfolio-item:hover img {

    transform: scale(1.05);

}


.portfolio-meta {

    padding-top: 20px;

}


.portfolio-meta span {

    color: #00e5ff;

    font-family: 'Montserrat', sans-serif;

    font-size: 10px;

    letter-spacing: .2em;

}


.portfolio-meta h3 {

    margin: 10px 0;

    font-weight: 400;

}


.portfolio-meta p {

    color: #666;

    font-size: 12px;

}


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

.contact-section {

    max-width: 850px;

}


.contact-form {

    margin-top: 50px;

}


.form-group {

    margin-bottom: 35px;

}


.form-group label {

    display: block;

    font-family: 'Montserrat', sans-serif;

    font-size: 10px;

    letter-spacing: .2em;

    color: #888;

    margin-bottom: 12px;

}


.form-group input,
.form-group select,
.form-group textarea {

    width: 100%;

    background: transparent;

    border: none;

    border-bottom: 1px solid #333;

    color: #fff;

    padding: 15px 5px;

    outline: none;

    font-family: inherit;

}


.form-group select option {

    background: #111;

}


.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {

    border-color: #00e5ff;

}


.estimate-box {

    margin: 50px 0;

    padding: 30px;

    border: 1px solid rgba(0,229,255,.3);

}


.estimate-box span {

    display: block;

    color: #888;

    font-family: 'Montserrat', sans-serif;

    font-size: 10px;

    letter-spacing: .2em;

}


.estimate-box strong {

    display: block;

    margin-top: 10px;

    font-family: 'Montserrat', sans-serif;

    font-size: 38px;

    color: #00e5ff;

}


.estimate-box small {

    color: #666;

}


.submit-button {

    width: 100%;

    padding: 20px;

    border: 1px solid #00e5ff;

    background: transparent;

    color: #fff;

    font-family: 'Montserrat', sans-serif;

    letter-spacing: .2em;

    cursor: pointer;

    transition: .3s;

}


.submit-button:hover {

    background: #00e5ff;

    color: #000;

}


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

footer {

    padding: 100px 5% 40px;

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

    text-align: center;

}


.footer-logo {

    font-family: 'Montserrat', sans-serif;

    font-size: 70px;

    letter-spacing: .15em;

}


footer p {

    color: #666;

    margin: 20px 0 50px;

    font-family: 'Montserrat', sans-serif;

}


footer small {

    color: #444;

}


/* ==================================================
   HAMBURGER
================================================== */

.hamburger {

    display: none;

}


.mobile-menu,
.menu-overlay {

    display: none;

}


/* ==================================================
   MOBILE
================================================== */

@media (max-width: 768px) {


    .navigation {

        height: 65px;

    }


    .nav-links {

        display: none;

    }


    .hamburger {

        display: block;

        position: fixed;

        top: 20px;

        right: 20px;

        z-index: 3000;

        width: 30px;

        cursor: pointer;

    }


    .hamburger span {

        display: block;

        height: 1px;

        background: #fff;

        margin-bottom: 7px;

        transition: .3s;

    }


    .mobile-menu {

        position: fixed;

        display: flex;

        flex-direction: column;

        justify-content: center;

        gap: 35px;

        top: 0;

        right: -100%;

        width: 80%;

        height: 100vh;

        background: #080808;

        z-index: 2500;

        padding: 40px;

        transition: .5s;

    }


    .mobile-menu.active {

        right: 0;

    }


    .mobile-menu a {

        font-family: 'Montserrat', sans-serif;

        font-size: 22px;

        letter-spacing: .15em;

    }


    .menu-overlay {

        display: block;

        position: fixed;

        inset: 0;

        background: rgba(0,0,0,.75);

        z-index: 2000;

        opacity: 0;

        visibility: hidden;

        transition: .4s;

    }


    .menu-overlay.active {

        opacity: 1;

        visibility: visible;

    }


    .section {

        width: 88%;

        padding: 100px 0;

    }


    .section-header {

        margin-bottom: 50px;

    }


    .profile-container {

        display: flex;

        flex-direction: column;

        gap: 50px;

    }


    .profile-image {

        width: 220px;

        height: 220px;

    }


    .profile-info {

        width: 100%;

    }


    .profile-row {

        grid-template-columns: 120px 1fr;

        padding: 18px 0;

    }


    .business-grid {

        grid-template-columns: 1fr;

    }


    .business-card {

        min-height: auto;

        padding: 30px;

    }


    .portfolio-tabs {

        gap: 20px;

        overflow-x: auto;

    }


    .portfolio-grid {

        grid-template-columns: 1fr;

    }


    .hero h1 {

        font-size: 80px;

    }


    .hero-subtitle {

        font-size: 10px;

    }


    .footer-logo {

        font-size: 45px;

    }

}