* {
    box-sizing: border-box;
}
body, h1, h2, h3, h4, p, ul, ol, dl, dt, dd, figure {
    margin: 0;
    padding: 0;
}
:root {
    --shima-red: #cc0000;
    --bg-light-gray: #f7f7f7;
    --bg-info-gray: #f0f0f0;
    --text-dark: #000;
    --text-gray: #666;
}
body {
    font-family: "Noto Sans JP", sans-serif; 
    color: var(--text-dark);
    min-width: 320px;
}
.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 20px;
}
h2 {
    font-size: 2.4em;
    font-weight: bold;
    margin-bottom: 40px;
    text-align: center;
}
a {
    color: var(--text-dark);
}
a:hover {
    text-decoration: underline;
}

/* ==============================================
   header〜main
   ============================================== */

header {
    background-color: #fff;
    text-align: center; 
}
section {
    overflow: hidden;
}
img {
    max-width: 100%;
    height: auto;
}
#mainvisual {
    background: #fff100;
}
.inner {
    max-width: 1140px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
section.first-section{
    background: #000;
    color: #fff;
}
.first-section .banner {
    text-align: center;
    padding-bottom: 50px;
}
h2.main-title {
    font-size: 6vw;
    font-weight: bold;
    margin-bottom: 2rem;
    padding-top: 50px;
    letter-spacing: 0.05em;
}
.first-section p {
    text-align: center;
    margin-bottom: 30px;
    padding: 0 30px;
    word-break: break-all;
}
.first-section .description1 {
    font-size: 4vw;
}
.first-section .description2 {
    font-size: 3.5vw;
}
.first-section .banner img {
    width: 100%;
}       
section.second-section {
    background: #fcb900;
    padding-top: 30px;
    font-weight: bold;
}
.description-2 {
    position: relative;
    color: #000;
    font-weight: bold;
    background-color: #fff100;
    margin: 0 auto;
    padding: 15px !important;
    width: 85%;
    border-radius: 10px;
    line-height: 1.6em;
}
.description-2 span img{
    width: 14%;
    position: absolute;
    top: -30px;
    left: -20px;
}
.underline{
    text-decoration: underline;
    text-underline-offset: 8px;
}
br.hide {
    display: none;
}

@media (min-width: 600px) {
    h2.main-title {
        font-size: 30px;
    }
    .first-section .description1,
    .description-2 {
        font-size: 25px;
    }
    .first-section .description2 {
        font-size: 20px;
    }
    .first-section .banner img {
        width: 50%;
    }
    .description-2 {
        position: relative;
        color: #000;
        font-weight: bold;
        background-color: #fff100;
        margin: 0 auto;
        padding: 15px !important;
        width: 50%;
        border-radius: 10px;
    }
    .description-2 span img{
        width: 12%;
        position: absolute;
        top: -50px;
        left: 0;
    }
        br.hide {
        display: block;
    }
}

/* ==============================================
   店内BGM放送曲                          
   ============================================== */

.bgm-section {
    padding: 80px 0;
    background: #ededed;
}
.bgm-section .container,
.advice-details-section .container {
    padding: 50px 0;
    background-color: #fff;
    border-radius: 10px; 
}
.bgm-section h2 span {
    font-size: 30px;
    background: linear-gradient(transparent 60%, #fcb900 60%);
    max-width: 80%;
    margin: 0 auto;
}
.bgm-section h3 {
    font-size: 30px;
    text-align: center;
    margin: 24px 0;
}
.bgm-section p {
    max-width: 80%;
    margin-bottom: 40px;
    font-size: 16px;
    margin: 0 auto;
}
.broadcast-lineup{
    max-width: 80%;
    margin: 0 auto;
}
.broadcast-lineup h3 {
    font-size: 1.8em;
    margin-bottom: 25px;
    text-align: left;
}
.broadcast-lineup p.schedule{
    margin: inherit;
    max-width: inherit
}
.bgm-volume-card {
    padding: 20px;
    background-color: #f9f9f9;
}
.bgm-volume-card h4 {
    font-size: 1.5em;
    margin-top: 0;
    border-bottom: 2px solid var(--shima-red); 
    padding-bottom: 5px;
    margin-bottom: 15px;
}
.song-list {
    padding: 30px 0;
    list-style-position: inside;
    list-style-type: disc;
    padding: ;
}
.soundcloud-embed {
    max-width: 80%;
    margin: 50px auto 0;
}

@media (min-width: 600px) {
    .broadcast-lineup {
        display: flex;
        justify-content: center;
        gap: 30px;
        margin-bottom: 50px;
    }
    .bgm-volume-card {
        flex: 1;
        text-align: left;
    }
}

/* ==============================================
   参加方法                          
   ============================================== */

.how-to-participate-section {
    padding: 40px 0 50px;
    text-align: center;
}
.how-to-participate-section h2 span {
    font-size: 6vw;
    background: linear-gradient(transparent 60%, #fcb900 60%);
    max-width: 80%;
    margin: 0 auto;
}
.arrow {
    width: 10%;
    transform: rotate(90deg);
    display: inline-flex;
    margin: 20px 0;
}
.step-card img {
    max-width: 60%;
    height: auto;
}

@media (min-width: 600px) {
    .how-to-participate-section h2 span {
        font-size: 30px;
    }
    .step-flow {
        display: flex; 
        flex-wrap: nowrap; 
        justify-content: center;
        align-items: center;
        margin: 30px auto 0;
        gap: 50px;
    }  
    .step-card {
        flex-grow: 1; 
        flex-basis: 150px; 
        max-width: 250px; 
        padding: 10px;
    }
    .arrow {
        display: block; 
        width: 60px; 
        margin: 0 -15px; 
        transform: rotate(0deg);
    }
}

/* ==============================================
   アドバイスコメント                          
   ============================================== */
   
.advice-details-section {
    padding: 60px 0;
    background-image: url("/p/event/ongensensei/img/back-3.png");
    background-color: #ededed;
    background-position: 86% 55%;
    background-repeat: repeat;
    background-size: 21%;
    background-attachment: scroll;
}
.advice-details-section h2{
    font-size: 6vw;
}
.advice-sheet-visual {
    margin-bottom: 40px;
}
.sheet-image {
    display: block;
    margin: 0 auto;
    max-width: 70%;
    height: auto;
}
.advice-points {
    max-width: 80%;
    margin: 0 auto 50px;
}
.advice-details-section .container {
    max-width: 90%;
}
.point-item h3 {
    font-size: 6vw;
    margin-bottom: 10px;
}
.point-item p {
    margin-bottom: 1.5em;;
}
.point-item svg {
    margin-right: 10px; 
    margin-bottom: -3px;
}
.emotion-images {
    margin-top: 40px;
}
.emotion-images img {
    display: block;
    margin: 0 auto;
    max-width: 90%;
    height: auto;
}

@media (min-width: 600px) {
    .advice-details-section .container {
        max-width: 70%;
    }
    .advice-details-section h2{
        font-size: 30px;
    }
    .advice-points {
        text-align: left;
    }
    .point-item h3 {
        font-size: 30px;
        padding-left: 30px; 
    }
    .point-item p {
        padding-left: 30px;
    }
    .emotion-images img {
        max-width: 60%;
    }
}

/* ==============================================
   申し込み                          
   ============================================== */

.info-card h2 span {
    font-size: 6vw;
    background: linear-gradient(transparent 60%, #fcb900 60%);
    max-width: 80%;
    margin: 0 auto;
}
.info-details-section {
    padding: 60px 0;
    background-color: #f8ca45;
}
.highlight-info-grid {
    gap: 30px;
    grid-template-columns: 1fr;
    margin-bottom: 50px;
    text-align: center;
}
.info-card .data {
    font-size: 7vw; 
}
.info-card .data span {
    font-size: 4vw; 
}
.info-card {
    background-color: #fff;
    padding: 20px;
    border-radius: 13px;
    border: 3px solid #000;
}
.info-card h2 {
    margin-bottom: 26px;
}
.requirements,
.faq {
    background-color: #fff;
    padding: 20px;
    border-radius: 13px;
    border: 3px solid #000;
}
.requirements summary,
.faq summary {
    text-align: center;
}
.requirements ol {
    margin-top: 20px;
    list-style: decimal;
    list-style-position: inside;
}
.requirements li {
    margin-bottom: 0.5em;
}
.requirements ol span {
    color: #f00;
    margin-top: 20px;
    list-style: decimal;
    list-style-position: inside;
}
.faq {
    margin-top: 50px;
    text-align: left;
}
.faq dt {
    display: flex;
    align-items: baseline;
    color: #000;
    padding: 0 15px 6px;
    margin-top: 15px;
}
.faq dd {
    display: flex;
    align-items: baseline;
    color: #000;
    padding: 0 15px 10px;
}
.faq dt::before {
    content: "Q";
    display: flex;
    justify-content: center;
    align-items: center;
    background: #000;
    color: #fff;
    width: 35px;
    height: 32px;
    border-radius: 50px;
}
.faq dd::before {
    content: "A";
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f8bb23;
    color: #fff;
    width: 35px;
    height: 32px;
    border-radius: 50px;
}
.faq dt p,
.faq dd p {
    width: 100%;
    padding-left: 15px;
}
.button a{
    display: block;
    width: 100%;
    margin: 0 auto;
    font-size: 5vw;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    margin-top: 50px;
    padding: 20px;
    border-radius: 13px;
    background-color: #4fc500;
}

@media (min-width: 600px) {
    .highlight-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .info-card h2 span {
        font-size: 30px;
    }
    .info-card .data {
        font-size: 1.8em; 
    }
    .info-card .data span {
        font-size: 0.7em; 
    }   
    .faq dt::before {
        width: 38px;
        height: 38px;
    }
    .faq dd::before {
        width: 38px;
        height: 38px;
    }
    .button a{
        width: 60%;
        font-size: 1.3vw;
    }
}

/* ==============================================
   連動イベント                          
   ============================================== */

.event {
    padding: 60px 0;
    background: #ededed;
}
.event h2 {
    font-size: 6vw;
}
.event .container {
    margin: 0 auto;
}
.event img {
    max-width: 100%;
    display: block;
    margin: 0 auto;
}
.event p {
    margin: 1em 0;
}
.event-inner {
    padding: 0 20px;
}

@media (min-width: 600px) {
    .event .container {
        display: flex;
        max-width: 70%;
        justify-content: center;
        gap: 30px;
        margin: 0 auto 30px;
    }
    .event h2 {
        font-size: 2.4em;
    } 
    .event-inner {
        flex: 1;
    }
    .event img {
        max-width: 70%;
    }
}

/* ==============================================
   アドバイザー                          
   ============================================== */

.advisor {
    padding: 60px 0;
}
.advisor h2 {
    font-size: 6vw;
}
.advisor .advisor-inner{
    display: flex;
    margin-bottom: 20px;
}
.advisor .advisor-img {
    flex-basis: 33.33%;
}
.advisor .advisor-profile {
    flex-basis: 66.66%;
    padding-left: 30px;
}
.advisor-profile .sns {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
}
.advisor-photo {
    max-width: 100%;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 0;
}
.role {
    margin: 10px 0;
}

@media (min-width: 600px) {
    .advisor {
        padding: 50px;
    }
    .advisor h2 {
        font-size: 2.4em;
    }
    .advisor .container {
        display: flex;
        max-width: 80%;
        margin: 0 auto 10px;
    }
    .advisor .advisor-inner{
        width: 50%;
        padding: 0 30px;
    }
}

/* ==============================================
   協賛                          
   ============================================== */

.sponsorship h2 {
    font-size: 6vw;
}
.sponsorship .container {
    margin: 0 auto 50px;
}
.sponsorship .container img {
    display: block;
    margin: 0 auto;
    max-width: 50%;
    margin-bottom: 30px;
}

@media (min-width: 600px) {
    .sponsorship h2 {
        font-size: 2em;
    }
    .sponsorship .container {
        display: flex;
        justify-content: center;
        margin: 0 auto 50px;
    }
    .sponsorship .container img{
        max-width: 100%;
        padding: 0 20px;
    }
}

/* ==============================================
   footer                          
   ============================================== */

footer {
    background: #e8e8e8;
    color: #000;
    font-size: 75%;
    position: relative;
    padding: 30px 0;
}
footer .inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    align-items: center;
}
footer .copyright {
    margin-right: 20px;
}