*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}

:root {
    --yellow: #ffe66d;
    --yellow2: #ffd91f;
    --blue: #00b0f0;
    --pink: #ff99cc;
    --orange: #ff9933;
    --red: #d90000;
    --brown: #5a2c00;
    --text: #333;
    --mid: #555;
    --light: #888;
}

body {
    font-family:
        "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", "Yu Gothic",
        sans-serif;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
    background: #fff5a8;
}

img {
    display: block;
    width: 100%;
}
.container {
    width: min(960px, calc(100% - 40px));
    margin-inline: auto;
}
.narrow {
    max-width: 680px;
}
.section {
    padding-block: 48px;
    background: #fff7b8;
}
.section:nth-of-type(even) {
    background: #fff;
}
.section-yellow {
    background: #fff5a8;
}

/* ===== SECTION BAR ===== */
.section-bar {
    display: inline-block;
    margin-bottom: 24px;
    padding: 8px 34px;
    border-radius: 999px;
    background: var(--yellow2);
    color: var(--brown);
    font-size: 1.15rem;
    font-weight: 900;
    border: 3px solid #fff;
    box-shadow: 0 4px 0 rgba(90, 44, 0, 0.14);
}

/* ===== HERO ===== */
.hero {
    background:
        radial-gradient(
            circle at 50% 46%,
            rgba(255, 255, 238, 0.55) 0 17%,
            rgba(255, 255, 238, 0) 38%
        ),
        linear-gradient(180deg, #ffe36c 0%, #ffe36c 64%, #fff0a1 100%);
    position: relative;
    overflow: hidden;
}

.hero::before,
.hero::after {
    content: "";
    position: absolute;
    top: 0;
    z-index: 1;
    pointer-events: none;
}

.hero::before {
    left: calc(50% + 19px);
    top: 48px;
    width: min(950px, 80vw);
    height: 738px;
    transform: translateX(-50%);
    background:
        radial-gradient(
            ellipse at 50% 0%,
            rgba(255, 255, 246, 0.94) 0 7%,
            rgba(255, 255, 246, 0.7) 22%,
            rgba(255, 255, 246, 0) 54%
        ),
        linear-gradient(
            180deg,
            rgba(255, 255, 242, 0.78) 0%,
            rgba(255, 255, 242, 0.44) 54%,
            rgba(255, 255, 242, 0) 92%
        );
    clip-path: polygon(50% 0%, 90% 100%, 10% 100%);
    filter: blur(1px);
}

.hero::after {
    left: calc(50% + 6px);
    top: 96px;
    width: min(430px, 52vw);
    height: 660px;
    transform: translateX(-50%);
    background: radial-gradient(
        ellipse at 50% 52%,
        rgba(255, 255, 250, 0.5) 0 24%,
        rgba(255, 255, 250, 0) 68%
    );
}

/* ガーランド */
.garland-wrap {
    position: absolute;
    top: 0;
    left: 50%;
    z-index: 3;
    width: min(1080px, 118vw);
    line-height: 0;
    transform: translateX(-50%);
}
.garland-wrap img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    object-position: center 8%;
}

/* 紙ふぶき */
.confetti {
    position: absolute;
    z-index: 2;
    pointer-events: none;
    width: 240px;
    opacity: 0.72;
}
.cl {
    top: 70px;
    left: -32px;
    transform: rotate(-15deg);
}
.cr {
    top: 52px;
    right: -30px;
    transform: rotate(15deg) scaleX(-1);
}

/* ===== HERO STAGE ===== */
.hero-stage {
    position: relative;
    z-index: 4;
    max-width: 960px;
    margin-inline: auto;
    height: 720px;
    padding-top: clamp(78px, 9vw, 116px);
    overflow: hidden;
}

/* ロゴ：左側に大きく・黒背景を消す */
.hero-logo {
    position: absolute;
    top: clamp(-94px, -7vw, -66px);
    left: 50%;
    z-index: 6;
    width: min(86%, 820px);
    transform: translateX(-50%);
    filter: drop-shadow(0 6px 0 rgba(255, 255, 255, 0.5));
    mix-blend-mode: normal;
}

/* 対象バッジ：右上 */
.target-badge {
    position: absolute;
    top: 350px;
    right: 72px;
    z-index: 5;
    width: 168px;
    height: 150px;
    border-radius: 32% 38% 36% 34% / 42% 36% 40% 34%;
    background: var(--red);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow:
        0 8px 0 rgba(112, 0, 0, 0.1),
        0 12px 24px rgba(172, 0, 0, 0.26);
    color: #fff;
}
.target-label {
    margin-bottom: 8px;
    padding: 2px 24px;
    border-radius: 999px;
    background: #fff;
    color: var(--red);
    font-size: 1rem;
    font-weight: 900;
    line-height: 1.35;
}
.target-badge strong {
    color: #fff15d;
    font-size: 1.02rem;
    font-weight: 900;
    line-height: 1.38;
    text-shadow: 0 2px 0 rgba(86, 0, 0, 0.3);
}

/* 丸い会場写真：左下 */
.venue-circle {
    position: absolute;
    left: 48px;
    top: 350px;
    z-index: 6;
    width: 126px;
    height: 126px;
    border-radius: 50%;
    overflow: hidden;
    border: 5px solid rgba(255, 255, 255, 0.82);
    box-shadow: 0 5px 18px rgba(102, 51, 0, 0.2);
    background: #fffdf0;
}
.venue-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    padding: 0;
}

/* メインイラスト：右から大きく・黒背景を消す */
.main-illust {
    position: absolute;
    left: 50%;
    right: auto;
    bottom: -50px;
    top: auto;
    z-index: 4;
    width: min(82%, 790px);
    height: auto;
    object-fit: contain;
    object-position: center bottom;
    transform: translateX(-50%);
    mix-blend-mode: screen;
    filter: contrast(1.02) saturate(1.05);
}

/* 社会実験バッジ */
.badge-exp {
    position: absolute;
    left: 50%;
    bottom: 68px;
    z-index: 6;
    display: inline-block;
    padding: 5px 14px;
    border-radius: 999px;
    background: rgba(0, 176, 240, 0.95);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 800;
    transform: translateX(-50%);
    box-shadow: 0 3px 0 rgba(0, 100, 150, 0.2);
}

/* ===== 日程バー ===== */
.date-bar {
    position: relative;
    z-index: 6;
    background: #fff;
    padding: 22px 28px;
    max-width: 960px;
    margin: 0 auto 0;
    display: flex;
    align-items: center;
    gap: 28px;
    flex-wrap: wrap;
    border-top: 4px solid rgba(255, 217, 31, 0.2);
    border-bottom: 4px solid var(--yellow2);
}

.date-block {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.date-row {
    display: flex;
    align-items: baseline;
    gap: 6px;
    flex-wrap: wrap;
}

.date-year {
    font-size: 1.05rem;
    font-weight: 900;
    color: var(--brown);
}

.date-num {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
    color: var(--brown);
}
.date-num em {
    font-style: normal;
    font-size: 4.2rem;
}
.date-num2 em {
    font-size: 4.2rem;
}

.dow {
    padding: 4px 11px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 900;
    color: #fff;
}
.sun {
    background: var(--red);
}
.mon {
    background: var(--blue);
}

.date-time {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text);
}

.date-right {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-shrink: 0;
}

.venue-info {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #fff2a0;
    border-radius: 999px;
    padding: 8px 16px;
}
.venue-tag {
    padding: 3px 12px;
    border-radius: 999px;
    background: var(--blue);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 800;
    flex-shrink: 0;
}
.venue-name {
    font-weight: 800;
    font-size: 0.97rem;
}

.free-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
}
.free-label {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--brown);
}
.free-badge {
    padding: 5px 22px;
    border-radius: 999px;
    background: var(--red);
    color: #fff;
    font-size: 1.35rem;
    font-weight: 900;
    box-shadow:
        0 5px 0 rgba(120, 0, 0, 0.16),
        0 8px 12px rgba(200, 0, 0, 0.18);
}

/* ===== なあに ===== */
.about-bar {
    position: relative;
    z-index: 6;
    background: #fff;
    border-top: 0;
    padding: 26px 0 30px;
}
.about-inner {
    max-width: 960px;
    margin-inline: auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    align-items: start;
}
.about-ttl {
    display: inline-block;
    padding: 5px 28px;
    border-radius: 999px;
    background: var(--yellow2);
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--brown);
    margin-bottom: 10px;
    border: 3px solid #fff;
    box-shadow: 0 3px 0 rgba(90, 44, 0, 0.13);
}
.about-text p {
    font-size: 0.92rem;
    color: var(--text);
    font-weight: 700;
    line-height: 1.75;
}
.about-text strong {
    color: var(--text);
}

.about-photos {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.about-photo-item {
    border-radius: 14px;
    overflow: hidden;
    border: 6px solid var(--yellow2);
    background: #fff;
    text-align: center;
    box-shadow: 0 4px 0 rgba(90, 44, 0, 0.12);
}
.about-photo-item img {
    aspect-ratio: 4/3;
    object-fit: contain;
    height: auto;
    padding: 12px;
    background: #fffdeb;
}
.about-photo-item span {
    display: block;
    padding: 6px 4px 8px;
    font-size: 0.9rem;
    font-weight: 800;
    color: #fff;
    background: var(--orange);
}

/* ===== PROGRAM ===== */
.caution-box {
    margin-bottom: 22px;
    padding: 14px 20px;
    background: #fff;
    border: 3px dashed var(--orange);
    border-radius: 14px;
    font-size: 0.9rem;
    color: var(--mid);
}
.caution-box strong {
    color: var(--red);
}

.prog-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.prog {
    border-radius: 16px;
    overflow: hidden;
    border: 6px solid var(--yellow2);
    box-shadow: 0 5px 0 rgba(90, 44, 0, 0.12);
    background: #fff;
}

.prog-head {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 14px;
    min-height: 72px;
}
.prog-head h3 {
    color: #fff;
    font-size: 1rem;
    font-weight: 900;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}
.prog-head h3.dark {
    color: var(--brown);
    text-shadow: none;
}

.prog-icon {
    width: 52px;
    height: 52px;
    object-fit: contain;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    padding: 4px;
}

.prog-body {
    display: block;
}
.prog-wide {
    grid-template-columns: 1fr;
    padding: 16px 18px;
}

.prog-photo img {
    width: 100%;
    height: 150px;
    min-height: 0;
    object-fit: contain;
    padding: 14px;
    background: #fffdeb;
}
.prog-illust-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fffdeb;
    padding: 10px;
}
.prog-illust-wrap img {
    width: 100%;
    height: 150px;
    object-fit: contain;
}

.prog-text {
    padding: 12px 14px 16px;
}
.prog-time {
    font-size: 0.93rem;
    font-weight: 800;
    color: var(--blue);
    margin-bottom: 3px;
    line-height: 1.7;
}
.prog-time b {
    font-weight: 900;
}
.prog-cap {
    font-size: 0.79rem;
    color: var(--light);
    margin-bottom: 6px;
}
.prog-text p:last-child {
    font-size: 0.88rem;
    color: var(--text);
    font-weight: 700;
}

.other-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-top: 12px;
}
.other-grid img {
    border-radius: 10px;
    aspect-ratio: 1;
    object-fit: contain;
    height: auto;
    padding: 8px;
    background: #fffdeb;
}

/* アンケート */
.survey-box {
    margin-top: 24px;
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 18px 22px;
    border-radius: 18px;
    background: #fff9e0;
    border: 4px solid var(--yellow2);
    box-shadow: 0 4px 0 rgba(90, 44, 0, 0.12);
}
.survey-img {
    width: 96px;
    height: 96px;
    object-fit: cover;
    border-radius: 10px;
    flex-shrink: 0;
    background: #fff;
    padding: 0;
}
.survey-ttl {
    font-size: 0.93rem;
    font-weight: 800;
    margin-bottom: 4px;
    line-height: 1.6;
}
.survey-ttl strong {
    color: var(--red);
    font-size: 1.05rem;
}
.survey-text p:last-child {
    font-size: 0.88rem;
    color: var(--mid);
}

/* ===== INFO ===== */
.info-list {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 12px 14px;
    padding: 26px 28px;
    background: #fff;
    border-radius: 18px;
    border: 6px solid var(--yellow2);
    box-shadow: 0 5px 0 rgba(90, 44, 0, 0.12);
}
.info-list dt {
    font-weight: 900;
    color: var(--blue);
    font-size: 0.93rem;
    padding-top: 2px;
}
.info-list dd {
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.75;
}
.dd-free {
    color: var(--red);
    font-weight: 900;
    font-size: 1.1rem;
}

/* ===== ACCESS ===== */
.parking-alert {
    margin-bottom: 18px;
    padding: 12px 16px;
    border-radius: 16px;
    background: #ffeeee;
    border: 3px solid var(--red);
    font-size: 0.9rem;
    color: var(--text);
}
.parking-alert strong {
    color: var(--red);
}

.access-layout {
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 18px;
    align-items: start;
}
.access-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.access-item {
    display: flex;
    gap: 10px;
    padding: 14px 16px;
    background: #fff;
    border-radius: 16px;
    border: 4px solid var(--yellow2);
    box-shadow: 0 4px 0 rgba(90, 44, 0, 0.1);
}
.access-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    flex-shrink: 0;
}
.access-item strong {
    display: block;
    font-weight: 800;
    margin-bottom: 2px;
    font-size: 0.93rem;
}
.access-item p {
    font-size: 0.88rem;
    color: var(--mid);
}

.access-qr {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}
.access-qr img {
    width: 70px;
    height: 70px;
    object-fit: contain;
    flex-shrink: 0;
}
.access-qr span {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--mid);
}

.access-map {
    border-radius: 16px;
    border: 4px solid var(--yellow2);
    box-shadow: 0 4px 0 rgba(90, 44, 0, 0.1);
    object-fit: contain;
    height: auto;
}
.access-map-link {
    display: block;
    color: var(--mid);
    text-align: center;
    text-decoration: none;
}
.access-map-link span {
    display: block;
    margin-top: 8px;
    font-size: 0.82rem;
    font-weight: 700;
}

.access-note {
    margin-top: 10px;
    font-size: 0.82rem;
    color: var(--light);
}

/* ===== FOOTER ===== */
footer {
    padding-block: 20px;
    background: #333;
    text-align: center;
}
footer p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.82rem;
    max-width: none;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 760px) {
    .hero::before {
        left: calc(50% + 4px);
        top: 42px;
        width: min(390px, 82vw);
        height: 380px;
        opacity: 0.82;
    }
    .hero::after {
        left: calc(50% + 4px);
        top: 78px;
        width: min(310px, 66vw);
        height: 350px;
        opacity: 0.82;
    }
    .hero-stage {
        height: 540px;
        padding-top: 72px;
    }
    .hero-logo {
        top: clamp(-70px, -8vw, -42px);
        width: 104%;
    }
    .main-illust {
        width: 102%;
        max-width: none;
        bottom: 16px;
    }
    .target-badge {
        top: 200px;
        right: 14px;
        width: 126px;
        height: 116px;
    }
    .target-label {
        margin-bottom: 4px;
        padding-inline: 18px;
        font-size: 0.82rem;
    }
    .target-badge strong {
        font-size: 0.78rem;
        line-height: 1.35;
    }
    .venue-circle {
        top: 200px;
        left: 16px;
        width: 90px;
        height: 90px;
    }
    .badge-exp {
        bottom: 24px;
        font-size: 0.72rem;
    }
    .date-num {
        font-size: 2rem;
    }
    .date-num em {
        font-size: 2.8rem;
    }
    .date-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }
    .about-inner {
        grid-template-columns: 1fr;
    }
    .about-photos {
        grid-template-columns: repeat(3, 1fr);
    }
    .prog-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .prog-body {
        grid-template-columns: 160px 1fr;
    }
    .other-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .access-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 500px) {
    .hero-stage {
        height: 500px;
        padding-top: 54px;
    }
    .hero::before {
        top: 38px;
        width: 350px;
        height: 350px;
    }
    .hero::after {
        top: 70px;
        width: 280px;
        height: 330px;
    }
    .hero-logo {
        top: -10px;
        width: 92%;
    }
    .main-illust {
        width: 112%;
        bottom: 18px;
    }
    .target-badge {
        width: 96px;
        height: 92px;
        top: 270px;
        right: 10px;
    }
    .target-label {
        padding-inline: 13px;
        font-size: 0.68rem;
    }
    .target-badge strong {
        font-size: 0.61rem;
    }
    .venue-circle {
        top: 304px;
        left: 10px;
        width: 70px;
        height: 70px;
        border-width: 3px;
    }
    .garland-wrap img {
        height: 48px;
    }
    .confetti {
        width: 130px;
    }
    .date-bar {
        padding: 18px 22px;
    }
    .about-photos,
    .prog-list {
        grid-template-columns: 1fr;
    }
    .prog-body {
        grid-template-columns: 1fr;
    }
    .prog-photo img {
        max-height: 180px;
    }
    .info-list {
        grid-template-columns: 1fr;
        padding: 18px;
        gap: 4px;
    }
    .info-list dt {
        margin-top: 8px;
    }
    .survey-box {
        flex-direction: column;
    }
}