/* テーマ定義 */
:root {
    --bg-gradient: linear-gradient(to bottom, #FFF9B1, #00CED1, #E0FFFF);
    --text-color: #1A2A2A;
    --accent-color: #00CED1;
    --accent-alt: #00CD66;
    --section1-bg: #E0FFFF;
    --section2-bg: #E0FFFF;
    --section3-bg: #E0FFFF;
    --section4-bg: #F0E68C;
    --section5-bg: #AFEEEE;
    --footer-bg: #1A2A2A;
    --footer-text: #FFF9B1;
    --youtube-bg: #FF0000;
    --youtube-hover: darkred;
    --link-hover-bg: #EEE8AA;
    --link-hover-text: #00CD66;
    --news-bg: #FDFDF0;
    transition: all 0.5s ease;
}

[data-theme="dark"] {
    --bg-gradient: linear-gradient(to bottom, #2A2A2A, #1A3C3C, #1E4D4D);
    --text-color: #FFF9B1;
    --accent-color: #00CED1;
    --accent-alt: #00CD66;
    --section1-bg: #1E4D4D;
    --section2-bg: #1E4D4D;
    --section3-bg: #1E4D4D;
    --section4-bg: #3C3C1A;
    --section5-bg: #2A4D4D;
    --footer-bg: #1A1A1A;
    --footer-text: #E0FFFF;
    --youtube-bg: #CC0000;
    --youtube-hover: #990000;
    --link-hover-bg: #FFD700;
    --link-hover-text: #1A2A2A;
    --news-bg: #2A2A2A;
}

[data-theme="vivid"] {
    --bg-gradient: linear-gradient(to bottom, #B0E0E6, #98FB98, #F0FFF0);
    --text-color: #1A2A2A;
    --accent-color: #20B2AA;
    --accent-alt: #32CD32;
    --section1-bg: #F0FFF0;
    --section2-bg: #F0FFF0;
    --section3-bg: #F0FFF0;
    --section4-bg: #E0FFFF;
    --section5-bg: #B0E0E6;
    --footer-bg: #1A2A2A;
    --footer-text: #FFF9B1;
    --youtube-bg: #FF0000;
    --youtube-hover: #CC0000;
    --link-hover-bg: #98FB98;
    --link-hover-text: #1A2A2A;
    --news-bg: #F5FFFA;
}

[data-theme="pastel"] {
    --bg-gradient: linear-gradient(to bottom, #FFE4E1, #E6E6FA, #F0F8FF);
    --text-color: #1A2A2A;
    --accent-color: #87CEEB;
    --accent-alt: #FFB6C1;
    --section1-bg: #F0F8FF;
    --section2-bg: #F0F8FF;
    --section3-bg: #F0F8FF;
    --section4-bg: #FFF0F5;
    --section5-bg: #FFE4E1;
    --footer-bg: #1A2A2A;
    --footer-text: #FFF9B1;
    --youtube-bg: #FF0000;
    --youtube-hover: #CC0000;
    --link-hover-bg: #E6E6FA;
    --link-hover-text: #1A2A2A;
    --news-bg: #F5F5F5;
}

[data-theme="mono"] {
    --bg-gradient: linear-gradient(to bottom, #D3D3D3, #E8E8E8, #FFFFFF);
    --text-color: #1A2A2A;
    --accent-color: #808080;
    --accent-alt: #696969;
    --section1-bg: #FFFFFF;
    --section2-bg: #FFFFFF;
    --section3-bg: #FFFFFF;
    --section4-bg: #E8E8E8;
    --section5-bg: #D3D3D3;
    --footer-bg: #1A2A2A;
    --footer-text: #FFFFFF;
    --youtube-bg: #FF0000;
    --youtube-hover: #CC0000;
    --link-hover-bg: #C0C0C0;
    --link-hover-text: #1A2A2A;
    --news-bg: #F0F0F0;
}

/* リセット */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    line-height: 1.8;
    color: var(--text-color);
    background: var(--bg-gradient);
    margin: 0;
    padding: 0;
}

footer {
    background-color: var(--footer-bg);
    border-top: 1px solid var(--accent-alt);
    box-shadow: 0 -2px 6px rgba(0,0,0,0.05);
    padding: 40px 0;
    text-align: center;
    color: var(--footer-text);
    z-index: 4;
}

/* ローディング画面 */
.loading {
    position: fixed;
    inset: 0;
    background: var(--section1-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 2.5s ease;
    opacity: 1;
    z-index: 9999;
}

.loading.fadeout {
    opacity: 0;
    pointer-events: none;
}

.loading img {
    width: 80%;
    height: auto;
    object-fit: contain;
}

@media (min-width: 1025px) {
    .loading img {
        max-width: 70%;
    }
}

/* 飛び散るアイコン */
.scatter-fly {
    position: fixed;
    left: 0;
    top: 0;
    width: 128px;
    height: auto;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.5s cubic-bezier(.4,0,.2,1);
}

/* パララックスセクション */
.parallax {
    position: relative;
    height: 400px;
    background-color: var(--section2-bg);
    overflow: hidden;
    margin: 0;
    z-index: 1;
}

.parallax__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, var(--section2-bg));
    z-index: 0;
    transition: transform 0.8s linear;
}

.parallax__img {
    position: absolute;
    left: 35%;
    width: 250px;
    height: auto;
    padding-top: 10px;
    padding-bottom: 10px;
    transition: transform 1.2s linear;
    transform: translateX(-50%) translateY(50%);
    z-index: 3;
}

.parallax__img--main {
    left: 65%;
    transform: translateX(-50%) translateY(50%);
}

.parallax__text {
    position: absolute;
    left: 50%;
    transform: translateX(-50%) translateY(40%);
    color: var(--accent-color);
    font-size: 24px;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    z-index: 2;
    transition: transform 0.4s linear;
}

/* ヘッダー */
header {
    font-weight: 700;
    position: fixed;
    width: 100%;
    z-index: 10;
    background-color: transparent;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

header.scrolled {
    background-color: rgba(26, 42, 42, 0.95);
}

header .container {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 16px;
}

header .row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
    flex-wrap: wrap;
}

.header__logo {
    font-size: 24px;
    text-decoration: none;
    color: var(--accent-color);
}

header ul {
    display: flex;
    list-style: none;
}

header ul li {
    margin-left: 20px;
    letter-spacing: 1px;
}

header ul li a {
    color: var(--accent-color);
    text-decoration: none;
}

header ul li a:focus {
    outline: 2px solid var(--accent-alt);
    outline-offset: 2px;
    border-radius: 4px;
}

.nav--pc {
    display: block;
    order: 3;
}

.hamburger {
    order: 4;
    display: none;
}

.theme-selector {
    display: flex;
    gap: 10px;
    order: 2;
    margin-left: 16px;
}

.theme-selector__btn {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--footer-text);
    cursor: pointer;
    transition: transform 0.2s ease;
}

.theme-selector__btn:hover {
    transform: scale(1.2);
}

.theme-selector__btn:focus {
    outline: 2px solid var(--accent-alt);
    outline-offset: 2px;
}

/* セクション1 */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    padding-top: 60px;
    box-sizing: border-box;
}

.hero__bg-flow {
    display: flex;
    position: absolute;
    left: 0;
    width: calc(20% * 15);
    height: 225px;
    opacity: 0.8;
    z-index: 0;
    will-change: transform;
    animation: flow 40s linear infinite;
}

#bg-top { top: 60px; }
#bg-bottom { bottom: 0; }

.hero__thumb {
    width: 20%;
    height: 225px;
    background-size: cover;
    background-position: center;
}

#bg-bottom .hero__thumb {
    animation-direction: reverse;
}

@keyframes flow {
    from { transform: translateX(0); }
    to { transform: translateX(-33.33%); }
}

.hero .container {
    position: relative;
    text-align: center;
    width: 95%;
    max-width: 1080px;
    margin: 0 auto;
    z-index: 2;
}

.hero .hero__filter {
    width: 100%;
    height: 100vh;
    background-color: black;
    opacity: 0.1;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.hero__heading {
    font-size: 18px;
    font-weight: 700;
    margin: 5px 0;
    color: var(--accent-alt);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    line-height: 1.1;
}

.hero h1 {
    font-size: 32px;
    font-weight: 700;
    margin: 8px 0;
    color: var(--accent-color);
    line-height: 1.2;
}

.hero .text {
    font-size: 14px;
    margin: 5px 0 10px;
    color: var(--text-color);
    line-height: 1.2;
    white-space: nowrap;
}

.hero .link--youtube {
    font-size: 14px;
    font-weight: 700;
    padding: 8px 24px;
    display: inline-block;
    background-color: var(--youtube-bg);
    color: var(--footer-text);
    border-radius: 6px;
    transition: background-color 0.5s;
    position: relative;
    z-index: 3;
    margin-top: 8px;
}

.hero .link--youtube:hover {
    background-color: var(--youtube-hover);
    text-decoration: none;
    color: var(--footer-text);
}

.hero .link--youtube:focus {
    outline: 2px solid var(--accent-alt);
    outline-offset: 2px;
}

/* セクション2 */
.activities {
    background-color: var(--section2-bg);
}

.activities .container {
    max-width: 1080px;
    width: 90%;
    margin: 0 auto;
}

.activities .row {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    z-index: 2;
    position: relative;
}

.activities .column {
    background-color: var(--news-bg);
    color: var(--text-color);
    width: 32%;
    padding: 20px;
    z-index: 2;
    position: relative;
}

.activities .row img {
    width: 100px;
    padding: 10px;
    border-radius: 10px;
    margin-bottom: 16px;
}

.activities h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-alt);
    margin-bottom: 16px;
}

.activities hr {
    border: solid 2px var(--accent-alt);
    margin-bottom: 16px;
    width: 48px;
}

.activities .text {
    font-size: 15px;
    line-height: 1.8;
}

/* セクション3 */
.videos {
    background-color: var(--section3-bg);
    padding: 0px 0 40px;
}

.videos .container {
    max-width: 1080px;
    width: 90%;
    margin: 0 auto;
}

.videos .row {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 60px;
}   

.videos .column {
    width: 46%;
}

.videos h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-alt);
    margin-bottom: 18px;
    line-height: 1.3;
}

.videos hr {
    border: solid 2px var(--accent-color);
    margin-bottom: 20px;
    width: 60px;
}

.videos .text {
    font-size: 16px;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 20px;
}

.videos iframe {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
}

@media (min-width: 1025px) {
    .videos .column iframe {
        max-width: 600px;
        width: 100%;
    }
}

/* セクション4 */
.news {
    background-color: var(--section4-bg);
    padding: 50px 0;
}

.news .container {
    max-width: 1080px;
    width: 90%;
    margin: 0 auto;
}

.news h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-alt);
    text-align: center;
    margin-bottom: 20px;
}

.news hr {
    border: solid 2px var(--accent-alt);
    margin: 0 auto 40px;
    width: 60px;
}

.news ul {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
}

.news li {
    border: solid 1px var(--accent-color);
    background-color: var(--news-bg);
    color: var(--text-color);
    font-size: 16px;
    margin-bottom: 20px;
    padding: 16px 24px;
}

.news__date {
    color: var(--accent-alt);
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 6px;
}

.news__content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}

.news__content.open {
    max-height: 1000px;
}

@media (min-width: 1025px) {
    .news__content.open {
        max-height: 1200px;
    }
}

#toggleNews {
    display: block;
    margin: 20px auto 0;
    padding: 8px 20px;
    background-color: rgba(255, 249, 177, 0.6);
    color: var(--accent-alt);
    border: 1px solid var(--accent-color);
    border-radius: 5px;
    font-size: 0.9rem;
    cursor: pointer;
    backdrop-filter: blur(3px);
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

#toggleNews:hover {
    background-color: rgba(255, 249, 177, 0.8);
    transform: translateY(-2px);
}

/* セクション5 (Links) */
.links {
    background-color: var(--section5-bg);
    padding: 50px 0;
    position: relative;
    z-index: 5;
    min-height: 200px;
}

.links .container {
    max-width: 1080px;
    width: 90%;
    margin: 0 auto;
    position: relative;
    z-index: 6;
}

.links h2 {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    color: var(--accent-alt);
    margin-bottom: 20px;
    letter-spacing: 1px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.links hr {
    border: solid 2px var(--accent-alt);
    width: 60px;
    margin: 0 auto 40px;
}

.links ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    min-height: 150px;
}

.links a {
    display: inline-flex; /* 内容に合わせてサイズ調整 */
    padding: 10px 20px; /* 上下左右の余白を調整 */
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    color: var(--footer-text);
    background-color: var(--accent-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 1;
    visibility: visible;
    backdrop-filter: none;
    height: auto; /* 高さを自動調整 */
    width: auto; /* 幅を自動調整 */
    text-align: center;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 7;
}

.links .link--youtube { background-color: var(--youtube-bg); }
.links .link--x { background-color: #000000; }
.links .link--marshmallow { background-color: var(--news-bg); color: var(--accent-color); }
.links .link--skeb { background-color: var(--accent-color); }
.links .link--booth { background-color: var(--section4-bg); color: #006400; }

.links a:hover {
    transform: scale(1.05);
    background-color: var(--link-hover-bg);
    color: var(--link-hover-text);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
    opacity: 1;
}

.links .link--marshmallow:hover {
    background-color: var(--link-hover-bg);
    color: var(--link-hover-text);
}

.links .link--booth:hover {
    background-color: var(--link-hover-bg);
    color: var(--link-hover-text);
}

/* フェードインアニメーション */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 2s ease, transform 2s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* モバイル (600px以下) でのフェードイン調整 */
@media (max-width: 600px) {
    .fade-in {
        opacity: 1;
        transform: translateY(0);
        transition: none;
    }
    .fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }
    .links ul {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 15px;
    }
    .links a {
        padding: 8px 16px; /* モバイル用にやや小さく */
        width: auto;
        height: auto;
        max-width: none;
        margin: 0;
    }
}

/* タブレット (601px〜1024px) */
@media (min-width: 601px) and (max-width: 1024px) {
    .nav--pc { display: none; }
    .hamburger { display: flex; }
    .nav--mobile { display: none; }
    .nav--mobile.active { display: block; }
    header .row {
        padding: 10px;
        justify-content: space-between;
        align-items: center;
    }
    .header__logo {
        font-size: 18px;
        order: 1;
    }
    .theme-selector {
        order: 2;
        margin-left: 16px;
        margin-right: auto;
        gap: 8px;
    }
    .hamburger {
        flex-direction: column;
        gap: 4px;
        cursor: pointer;
        align-items: flex-end;
        transition: 0.3s ease;
        order: 3;
    }
    .hamburger span {
        width: 28px;
        height: 3px;
        background-color: var(--accent-color);
        border-radius: 2px;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
    .hamburger.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    .nav--mobile {
        position: absolute;
        top: 60px;
        right: 0;
        width: 100%;
        background-color: rgba(26, 42, 42, 0.95);
        z-index: 9997;
    }
    .nav--mobile ul {
        padding: 20px;
    }
    .nav--mobile li {
        margin-bottom: 10px;
    }
    .nav--mobile a {
        color: var(--footer-text);
        text-decoration: none;
        font-weight: bold;
        font-size: 16px;
    }
    .scatter-fly {
        width: 64px;
        height: auto;
    }
    .hero__bg-flow {
        width: calc(33.33% * 6);
        animation-duration: 24s;
    }
    .hero__thumb {
        width: 33.33%;
        aspect-ratio: 480/225;
        min-height: 225px;
    }
    .hero__heading { font-size: 18px; line-height: 1.1; }
    .hero h1 { font-size: 28px; line-height: 1.2; }
    .hero .text { font-size: 13px; line-height: 1.2; }
    .hero .link--youtube { font-size: 13px; padding: 7px 20px; }
    .activities .row,
    .videos .row {
        flex-direction: column;
    }
    .activities .column,
    .videos .column {
        width: 100%;
        margin-bottom: 30px;
    }
    .activities h2 {
        font-size: 18px;
    }
    .activities .text {
        font-size: 14px;
        line-height: 1.8;
    }
    .videos h2 {
        font-size: 24px;
    }
    .videos .text {
        font-size: 15px;
        line-height: 1.8;
    }
    .news h2 {
        font-size: 24px;
    }
    .links ul {
        flex-direction: column;
        align-items: center;
        gap: 12px;
        padding: 0 10px;
    }
    .links a {
        font-size: 14px;
        padding: 10px 20px;
        width: 100%;
        max-width: 250px;
        display: block !important;
        opacity: 1 !important;
        visibility: visible !important;
        margin: 0 auto;
    }
    .theme-selector__btn {
        width: 20px;
        height: 20px;
    }
}

/* モバイル (600px以下) */
@media (max-width: 600px) {
    .nav--pc { display: none; }
    .hamburger { display: flex; }
    .nav--mobile { display: none; }
    .nav--mobile.active { display: block; }
    .header__logo {
        font-size: 16px;
        order: 1;
    }
    .theme-selector {
        order: 2;
        margin-left: 16px;
        margin-right: auto;
        gap: 8px;
    }
    .hamburger {
        flex-direction: column;
        gap: 4px;
        cursor: pointer;
        align-items: flex-end;
        transition: 0.3s ease;
        order: 3;
    }
    .hamburger span {
        width: 28px;
        height: 3px;
        background-color: var(--accent-color);
        border-radius: 2px;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
    .hamburger.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    .nav--mobile {
        position: absolute;
        top: 60px;
        right: 0;
        width: 100%;
        background-color: rgba(26, 42, 42, 0.95);
        z-index: 2;
    }
    .nav--mobile ul {
        padding: 20px;
    }
    .nav--mobile li {
        margin-bottom: 10px;
    }
    .nav--mobile a {
        color: var(--footer-text);
        text-decoration: none;
        font-weight: bold;
        font-size: 14px;
    }
    .scatter-fly {
        width: 64px;
        height: auto;
    }
    .hero__bg-flow {
        width: calc(33.33% * 6);
        animation-duration: 24s;
    }
    .hero__thumb {
        width: 33.33%;
        aspect-ratio: 400/225;
        min-height: 225px;
        background-size: contain;
        background-position: center;
        background-repeat: no-repeat;
    }
    .hero__heading { font-size: 16px; line-height: 1.1; }
    .hero h1 { font-size: 24px; line-height: 1.2; }
    .hero .text { font-size: 12px; line-height: 1.1; }
    .hero .link--youtube { font-size: 12px; padding: 6px 18px; }
    .activities .row,
    .videos .row {
        flex-direction: column;
    }
    .activities .column,
    .videos .column {
        width: 100%;
        margin-bottom: 30px;
    }
    .activities .column {
        padding: 15px;
    }
    .activities .row img {
        width: 80px;
    }
    .activities h2 {
        font-size: 16px;
    }
    .activities .text {
        font-size: 13px;
        line-height: 1.8;
    }
    .videos .column {
        margin-bottom: 40px;
    }
    .videos h2 {
        font-size: 22px;
    }
    .videos .text {
        font-size: 13px;
        line-height: 1.8;
    }
    .news h2 {
        font-size: 22px;
    }
    .news li {
        font-size: 13px;
        padding: 12px 16px;
    }
    .news__date {
        font-size: 11px;
    }
    .links h2 {
        font-size: 22px;
    }
    .links ul {
        flex-direction: row;
        align-items: center;
        gap: 15px;
        padding: 0 10px;
        flex-wrap: wrap;
    }
    .links a {
        font-size: 14px;
        padding: 8px 16px;
        width: auto;
        height: auto;
        max-width: none;
        display: block !important;
        opacity: 1 !important;
        visibility: visible !important;
        margin: 0;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    .theme-selector__btn {
        width: 20px;
        height: 20px;
    }
    /* パララックス */
    .parallax {
        height: 225px;
    }
    .parallax__img {
        left: 25%;
        width: 140px;
        min-width: 100px;
        padding-top: 4px;
        padding-bottom: 4px;
    }
    .parallax__img--main {
        left: 75%;
        width: 140px;
    }
    .parallax__text {
        font-size: 16px;
        left: 50%;
        transform: translateX(-50%) translateY(50px);
    }
}

/* スクランブルテキストアニメーション */
.scramble-text {
    display: block;
    font-size: inherit;
    line-height: inherit;
    white-space: normal;
    text-indent: 0;
}

.scramble-line {
    display: block;
}

.scramble-text span {
    display: inline-block;
    opacity: 1;
    color: var(--accent-color);
    background-color: rgba(255, 249, 177, 0.5);
    box-shadow: 0 0 8px rgba(255, 249, 177, 0.8);
    padding: 2px 4px;
    border-radius: 3px;
    transition: color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

.scramble-text span.revealed {
    color: var(--accent-alt);
    background-color: transparent;
    box-shadow: none;
}

/* テーマごとのハイライト色 */
[data-theme="dark"] .scramble-text span {
    background-color: rgba(29, 77, 77, 0.5);
    box-shadow: 0 0 8px rgba(29, 77, 77, 0.8);
}

[data-theme="vivid"] .scramble-text span {
    background-color: rgba(152, 251, 152, 0.5);
    box-shadow: 0 0 8px rgba(152, 251, 152, 0.8);
}

[data-theme="pastel"] .scramble-text span {
    background-color: rgba(255, 182, 193, 0.5);
    box-shadow: 0 0 8px rgba(255, 182, 193, 0.8);
}

[data-theme="mono"] .scramble-text span {
    background-color: rgba(192, 192, 192, 0.5);
    box-shadow: 0 0 8px rgba(192, 192, 192, 0.8);
}

/* activitiesのh2スタイル（競合防止） */
.activities h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-alt);
    margin-bottom: 16px;
    text-align: left;
}

/* PC (1025px以上) */
@media (min-width: 1025px) {
    .nav--mobile { display: none !important; }
}