/* Minimalist "Rakugaki Code" Styles */
:root {
    --main-yellow: #febd59; /* 画像から抽出した正確な背景色に合わせて境界線を消す */
    --cream: #fffcf2;
    --text-white: #ffffff;
    --text-dark: #5c4a3d;
    --font-main: 'Zen Maru Gothic', 'JK Gothic', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--cream);

    color: var(--text-dark);
    /* Default text color for body is dark */
    line-height: 2;
    font-size: 16px;
    letter-spacing: 0.05em;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.3s;
}

a:hover {
    opacity: 0.7;
}

/* Typography */
h1,
h2,
h3,
h4,
strong {
    font-weight: 500;
}

.highlight {
    font-weight: 700;
    margin-top: 20px;
    display: inline-block;
    color: #e59d29;
    /* A slightly darker yellow for highlights on cream */
}

/* Layout */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 30px;
}

.section {
    padding: 100px 0;
}

#about {
    padding-top: 100px;
}

#about-title {
    scroll-margin-top: 100px; /* メニューから飛んだ時に、ヘッダーに被らず綺麗な位置に表示させるためのオフセット */
}

/* Splash Screen */
.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999; /* 全ての上に被せる */
    pointer-events: none;
    transition: opacity 2s ease-in 3s, visibility 5s; /* 全体フェードアウトは波紋終了後に */
}

/* 広がる最中の誤クリック防止レイヤー */
.splash-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: auto;
}

.splash-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.splash-screen.fade-out::before {
    display: none;
}

/* 多層の波紋レイヤー */
.splash-layer {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background-color: transparent;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition-property: width, height;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

.splash-layer.layer-1 { box-shadow: 0 0 0 200vmax rgba(254, 189, 89, 0.3); } /* 最も内側、一番遅い */
.splash-layer.layer-2 { box-shadow: 0 0 0 200vmax rgba(254, 189, 89, 0.5); }
.splash-layer.layer-3 { box-shadow: 0 0 0 200vmax rgba(254, 189, 89, 0.7); }
.splash-layer.layer-4 { box-shadow: 0 0 0 200vmax rgba(254, 189, 89, 1.0); } /* 最も外側（不透明）、一番早い */

.splash-screen.fade-out .splash-layer {
    width: 250vmax;
    height: 250vmax;
}

.splash-screen.fade-out .layer-4 { transition-duration: 2.5s; }
.splash-screen.fade-out .layer-3 { transition-duration: 3.2s; }
.splash-screen.fade-out .layer-2 { transition-duration: 3.8s; }
.splash-screen.fade-out .layer-1 { transition-duration: 4.5s; }

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px; /* 追随時に邪魔にならないよう少しパディングを調整 */
    position: fixed; /* 追随させる */
    top: 0;
    left: 0;
    width: 100%;
    color: var(--text-white);
    background-color: var(--main-yellow); /* スクロールしても背景と同化しないように黄色背景 */
    z-index: 1000;
}

/* ヘッダーから垂れ下がる波 */
.header-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    transform: translateY(100%) scaleY(-1); /* ヘッダーの下に配置し、上下反転させて「垂れ下がる」形にする */
    line-height: 0;
    pointer-events: none; /* 下の要素のクリックを邪魔しないようにする */
}

.header-waves {
    position: relative;
    width: 100%;
    height: 5vh;
    min-height: 30px;
    max-height: 60px;
}

.parallax-header > use {
    animation: move-forever 25s cubic-bezier(.55,.5,.45,.5) infinite;
}

.parallax-header > use:nth-child(1) {
    animation-delay: -2s;
    animation-duration: 7s;
}

.parallax-header > use:nth-child(2) {
    animation-delay: -3s;
    animation-duration: 10s;
}

.parallax-header > use:nth-child(3) {
    animation-delay: -4s;
    animation-duration: 13s;
}

.parallax-header > use:nth-child(4) {
    animation-delay: -5s;
    animation-duration: 20s;
}

.logo {
    display: block;
    width: 180px;
    /* ヘッダーでのロゴの表示幅 */
    height: 50px;
    /* ヘッダーでのロゴの表示高さ */
    overflow: hidden;
    /* はみ出た部分を隠す */
    position: relative;
    border-radius: 6px;
    transition: transform 0.3s;
}

.logo:hover {
    transform: scale(1.05);
    opacity: 1;
    /* a:hoverのopacity上書き */
}

.logo img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    /* ここを大きくするほど、画像がズームされて文字が大きくなります */
    height: auto;
    display: block;
}

.nav {
    display: flex;
    gap: 30px;
    margin-right: 28px;
}

.nav a {
    font-size: 0.95rem;
    color: var(--text-white);
    position: relative;
}

/* Hamburger Menu (Hidden on PC) */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-white);
    border-radius: 3px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger Active Animation */
.hamburger.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Hero Section */
.hero {
    min-height: 120vh;
    /* 少し長めに設定して波を下の方へ */
    padding-bottom: 250px;
    /* 波とコンテンツの間に十分な余白を確保 */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: var(--main-yellow);
    color: var(--text-white);
    position: relative;
    /* overflow: hidden; 波がはみ出せるように削除 */
}

.wave-bottom {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    line-height: 0;
    z-index: 10;
}

/* 波が下に移動したときに黄色の背景が途切れないように上へ伸ばす */
.wave-bottom::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 150vh; 
    background-color: var(--main-yellow);
    z-index: -1;
}

.waves {
    position: relative;
    width: 100%;
    height: 12vh;
    margin-bottom: -7px;
    min-height: 80px;
    max-height: 150px;
}

.parallax > use {
    animation: move-forever 25s cubic-bezier(.55,.5,.45,.5) infinite;
}

.parallax > use:nth-child(1) {
    animation-delay: -2s;
    animation-duration: 7s;
}

.parallax > use:nth-child(2) {
    animation-delay: -3s;
    animation-duration: 10s;
}

.parallax > use:nth-child(3) {
    animation-delay: -4s;
    animation-duration: 13s;
}

.parallax > use:nth-child(4) {
    animation-delay: -5s;
    animation-duration: 20s;
}

@keyframes move-forever {
    0% { transform: translate3d(-90px, 0, 0); }
    100% { transform: translate3d(85px, 0, 0); }
}

.hero-content {
    position: relative;
    z-index: 20; /* 波の背景（z-index: 10）より手前に表示する */
}

/* Logo styling based on the image */
.hero-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 8vh;
    /* 画像を少し下へ移動 */
    margin-bottom: 20px;
}

.hero-logo img {
    max-width: 90%;
    max-height: 500px;
    /* 大幅に制限を緩めて画像を大きく表示 */
    object-fit: contain;
}

/* Recreating the slight playful tilt of the characters in the logo */
.char-1 {
    transform: translateY(-2px) rotate(-3deg);
}

.char-2 {
    transform: translateY(2px) rotate(2deg);
}

.char-3 {
    transform: translateY(-1px) rotate(-1deg);
}

.char-4 {
    transform: translateY(3px) rotate(4deg);
}

.char-5 {
    transform: translateY(-2px) rotate(-2deg);
}

.char-6 {
    transform: translateY(1px) rotate(1deg);
}

.char-7 {
    transform: translateY(-1px) rotate(-3deg);
}

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 400;
    opacity: 0.9;
}

/* Content Sections (These are on cream background) */
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 60px;
    text-align: center;
    letter-spacing: 0.1em;
    color: var(--text-dark); /* くっきり読めるように濃い茶色に変更 */
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 5px;
    background-color: var(--main-yellow);
    margin: 15px auto 0;
    border-radius: 3px;
}

.text-block {
    margin-bottom: 40px;
}

.text-block p {
    margin-bottom: 20px;
}

/* Read More Feature */
.hidden-content {
    display: none;
}

.hidden-content.show {
    display: block;
    animation: fadeInDown 0.4s ease-out forwards;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.btn-read-more {
    display: block;
    background: none;
    border: none;
    color: var(--main-yellow);
    font-size: 1rem;
    font-weight: 700;
    margin: 20px auto 0;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 4px;
    font-family: inherit;
    transition: color 0.3s;
}

.btn-read-more:hover {
    color: #e59d29;
}

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

.features {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.activity-slider {
    position: relative;
    max-width: 760px;
    margin: 54px auto 0;
    padding: 0 72px 44px;
}

.activity-viewport {
    overflow: hidden;
    border-radius: 20px;
}

.activity-track {
    display: flex;
    transition: transform 0.55s ease;
}

.activity-slide {
    flex: 0 0 100%;
    min-height: 260px;
    padding: 46px 54px;
    background-color: #fff;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 20px;
    box-shadow: 0 8px 26px rgba(0,0,0,0.06);
}

.activity-label {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--main-yellow);
    font-size: 0.95rem;
    font-weight: 700;
}

.activity-slide h3 {
    margin-bottom: 20px;
    color: var(--text-dark);
    font-size: 1.8rem;
}

.activity-slide p {
    font-size: 1.05rem;
    line-height: 2;
}

.activity-nav {
    position: absolute;
    top: 118px;
    z-index: 3;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background-color: var(--main-yellow);
    color: #fff;
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(0,0,0,0.12);
    transition: transform 0.3s, background-color 0.3s;
}

.activity-nav:hover {
    background-color: #e59d29;
    transform: translateY(-2px);
}

.activity-prev {
    left: 0;
}

.activity-next {
    right: 0;
}

.activity-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    justify-content: center;
    gap: 12px;
}

.activity-dot {
    width: 12px;
    height: 12px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background-color: rgba(0,0,0,0.16);
    cursor: pointer;
    transition: transform 0.3s, background-color 0.3s;
}

.activity-dot.is-active {
    background-color: var(--main-yellow);
    transform: scale(1.25);
}

.activity-photo {
    max-width: 920px;
    margin: 70px auto 0;
    text-align: center;
}

.activity-photo h3 {
    display: inline-block;
    margin-bottom: 24px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--main-yellow);
    color: var(--text-dark);
    font-size: 1.5rem;
}

.activity-photo img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.event-link-box {
    margin-top: 56px;
    text-align: center;
}

.event-link-box p {
    margin-bottom: 22px;
    color: var(--text-dark);
    font-size: 1.15rem;
    font-weight: 700;
}

.event-link-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
}

.event-promo {
    padding-top: 450px;
    padding-bottom: 10px;
}

.event-promo-box {
    padding: 44px 34px;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 8px 26px rgba(0,0,0,0.06);
    text-align: center;
}

.event-promo-label {
    display: inline-block;
    margin-bottom: 16px;
    color: #e59d29;
    font-size: 1.08rem;
    font-weight: 700;
}

.event-promo-box h2 {
    margin-bottom: 18px;
    color: var(--text-dark);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 700;
    line-height: 1.45;
}

.event-promo-box p:not(.event-promo-label) {
    margin-bottom: 28px;
    color: var(--text-dark);
    font-size: 1.05rem;
}

.axis-diagram {
    position: relative;
    max-width: 920px;
    min-height: 520px;
    margin: 76px auto 0;
}

.axis-shape {
    position: absolute;
    inset: 0 120px 46px;
    width: calc(100% - 240px);
    height: calc(100% - 46px);
    overflow: visible;
}

.axis-shape polygon {
    fill: rgba(254, 189, 89, 0.08);
    stroke: rgba(254, 189, 89, 0.75);
    stroke-width: 8;
    stroke-linejoin: round;
}

.axis-shape circle {
    fill: var(--main-yellow);
    stroke: #fff;
    stroke-width: 5;
}

.axis-node {
    position: absolute;
    z-index: 2;
    width: 260px;
    min-height: 170px;
    padding: 26px 24px;
    background-color: #fff;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    text-align: center;
}

.axis-node h3 {
    margin-bottom: 14px;
    color: var(--text-dark);
    font-size: 1.25rem;
    line-height: 1.35;
}

.axis-node h3 span {
    color: var(--main-yellow);
    font-size: 1.5rem;
}

.axis-node p {
    font-size: 0.95rem;
    line-height: 1.75;
    text-align: left;
}

.axis-node-vibe {
    top: -24px;
    left: 50%;
    transform: translateX(-50%);
}

.axis-node-think {
    bottom: 0;
    left: 0;
}

.axis-node-share {
    right: 0;
    bottom: 0;
}

.feature-item {
    min-width: 0;
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    border: 1px solid rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.concept-item h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    /* Darker subtle border for cream bg */
    padding-bottom: 10px;
    display: inline-block;
    color: var(--main-yellow);
}

.feature-item h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    border-bottom: 3px solid var(--main-yellow);
    padding-bottom: 10px;
    display: inline-block;
    color: var(--text-dark);
}

.concept-item {
    margin-bottom: 60px;
}

.sub-block {
    margin-top: 30px;
}

.sub-block h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: #e59d29;
}

#concept-story h4 {
    margin-top: 34px;
    margin-bottom: 14px;
    color: #e59d29;
    font-size: 1.18rem;
    line-height: 1.6;
}

#concept-story h4:first-child {
    margin-top: 0;
}

.sub-block ul {
    list-style-type: none;
    padding-left: 10px;
}

.sub-block li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.sub-block li::before {
    content: "・";
    position: absolute;
    left: 0;
    color: var(--main-yellow);
}

/* Member Roles */
.role-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 15px;
}

.role-item {
    display: flex;
    align-items: center;
    background-color: var(--cream);
    padding: 15px 20px;
    border-radius: 12px;
}

.role-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.95rem;
    margin-right: 20px;
    white-space: nowrap;
    text-align: center;
    width: 140px; /* 全員全く同じ大きさにする */
    flex-shrink: 0;
    background-color: var(--main-yellow); /* 色も全員同じ黄色に統一 */
    color: var(--text-white);
}

.role-desc {
    font-size: 0.95rem;
    color: #555;
    line-height: 1.5;
}

/* Members Section */
.member-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-top: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.member-row {
    display: flex;
    align-items: center;
    gap: 30px;
    border-bottom: 1px dashed rgba(0,0,0,0.1);
    padding-bottom: 30px;
}

.member-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.member-photo-placeholder {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    background-color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ccc;
    font-size: 0.9rem;
    border: 4px solid var(--main-yellow);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.member-photo {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--main-yellow);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    background-color: #fff;
}

.member-info {
    flex-grow: 1;
}

.member-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.member-title {
    font-size: 0.95rem;
    color: #e59d29;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.8;
}

.member-badge {
    display: inline-block;
    padding: 2px 12px;
    background-color: var(--main-yellow);
    color: var(--text-white);
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.member-desc {
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Buttons */
.btn {
    display: inline-block;
    background-color: var(--main-yellow);
    color: var(--text-white);
    padding: 15px 40px;
    font-size: 1.1rem;
    border-radius: 40px;
    margin-top: 20px;
    transition: all 0.3s;
    font-weight: 700;
    border: none;
    min-width: 320px; /* どのボタンも同じ幅になるように固定 */
    text-align: center;
}

.btn:hover {
    background-color: #e59d29;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(229, 157, 41, 0.3);
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px;
    font-size: 0.9rem;
    opacity: 0.7;
    margin-top: 50px;
}

.sp-br {
    display: none;
}

/* Responsive */
@media (max-width: 768px) {
    .sp-br {
        display: block;
    }

    .hamburger {
        display: flex;
        margin-right: 12px;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--main-yellow);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 40px;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav.active {
        right: 0;
    }

    .nav a {
        font-size: 1.5rem;
        font-weight: 700;
    }

    .section {
        padding: 60px 0;
    }

    #about {
        padding-top: 60px;
    }

    .event-promo {
        padding-top: 250px;
        padding-bottom: 20px;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

    .features {
        grid-template-columns: 1fr;
    }

    .activity-slider {
        padding: 0 0 42px;
    }

    .activity-slide {
        min-height: 300px;
        padding: 34px 28px;
    }

    .activity-slide h3 {
        font-size: 1.5rem;
    }

    .activity-slide p {
        font-size: 1rem;
        line-height: 1.9;
    }

    .activity-nav {
        top: auto;
        bottom: -4px;
        width: 42px;
        height: 42px;
        font-size: 1.6rem;
    }

    .activity-prev {
        left: 18px;
    }

    .activity-next {
        right: 18px;
    }

    .axis-diagram {
        min-height: 0;
        margin-top: 40px;
        display: grid;
        gap: 24px;
    }

    .axis-shape {
        display: none;
    }

    .axis-node {
        position: static;
        width: auto;
        min-height: 0;
        transform: none;
    }

    .role-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .member-row {
        flex-direction: row; /* スマホでも横並びを維持 */
        text-align: left; /* 左寄せ */
        align-items: flex-start; /* 上揃え */
        gap: 15px;
    }

    .member-photo-placeholder,
    .member-photo {
        width: 80px; /* スマホでは写真を少し小さくして横にテキストを置けるように */
        height: 80px;
        font-size: 0.8rem;
    }

    .center-text {
        text-align: left; /* スマホでは長文の中央寄せは読みづらいため左寄せに */
    }

    .btn {
        min-width: auto;
        width: 100%;
        padding: 15px 20px;
    }

    .event-link-actions {
        flex-direction: column;
    }
}

/* Scroll Fade-in Animation */
.js-enabled .fade-target {
    opacity: 0;
    transform: translateY(60px); /* 動きを大きく (30px -> 60px) */
    transition: opacity 1.5s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1.5s cubic-bezier(0.2, 0.8, 0.2, 1); /* ゆっくり滑らかに (0.8s -> 1.5s) */
}

.js-enabled .fade-target.visible {
    opacity: 1;
    transform: translateY(0);
}