:root {
    --page-gray: #e8e6e3;
    --poster-bg: #f3f0ec;
    --poster-line: #d7d2cc;
    --ink: #161616;
    --muted: #635953;
    --stage-red: #c9154a;
    --stage-red-dark: #971339;
    --stage-red-soft: #d14f72;
}

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

body {
    min-height: 100vh;
    font-family: "Barlow", sans-serif;
    font-size: 1.06rem;
    font-weight: 500;
    color: var(--ink);
    background: var(--page-gray);
    overflow-x: hidden;
}

p,
li {
    font-weight: 500;
}

.page-bg {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
}

.page-bg__image,
.page-bg__veil {
    position: absolute;
    inset: 0;
}

.page-bg__image {
    background-image: url("images/IMG_7830.jpg");
    background-size: cover;
    background-position: center 58%;
    background-repeat: no-repeat;
    opacity: 0.66;
    transform: translate3d(0, 0, 0) scale(1);
    will-change: transform;
}

.page-bg__veil {
    background:
    radial-gradient(circle at 18% 24%, rgba(255, 255, 255, 0.08), transparent 34%),
    linear-gradient(180deg, rgba(236, 231, 226, 0.16), rgba(236, 231, 226, 0.2));
}

.stage-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 2rem 1.2rem;
}

.poster {
    width: min(760px, 96vw);
    background: transparent;
    border: 1px solid var(--poster-line);
    box-shadow: 0 32px 70px rgba(65, 43, 34, 0.18);
    position: relative;
    overflow: hidden;
}

.poster::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(243, 240, 236, 0.09) 0%, rgba(243, 240, 236, 0.03) 100%);
    z-index: 0;
}

.poster > * {
    position: relative;
    z-index: 1;
}

.poster-topbar {
    min-height: 86px;
    background: linear-gradient(180deg, #d10e47 0%, #be0f40 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.9rem;
    padding: 0 1rem;
}

.poster-topbar h1 {
    font-family: "Bebas Neue", sans-serif;
    letter-spacing: 0.09em;
    font-size: clamp(2.4rem, 7vw, 3.6rem);
    line-height: 1;
}

.logo-small {
    width: 48px;
    height: 48px;
    background: #fff;
    border: 1px solid rgba(255, 255, 255, 0.6);
    object-fit: cover;
}

.poster-intro {
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 1.2rem;
    padding: 2rem 2rem 1.3rem;
    align-items: start;
}

.poster-intro__kanji {
    min-height: 190px;
    border-right: 1px solid #dfd8d0;
    display: grid;
    place-items: center;
    font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
    font-size: clamp(4.2rem, 10vw, 5.4rem);
    line-height: 0.95;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    color: #2b2a2a;
}

.poster-intro__content {
    padding-top: 0.8rem;
}

.poster-kicker {
    color: var(--stage-red-dark);
    text-transform: uppercase;
    letter-spacing: 0.24em;
    font-size: 0.72rem;
    margin-bottom: 0.55rem;
}

.poster-intro__content h2 {
    font-family: "Barlow Condensed", sans-serif;
    font-size: clamp(3.8rem, 9vw, 5.6rem);
    line-height: 0.9;
    font-weight: 800;
    letter-spacing: 0.01em;
}

.poster-subtitle {
    margin-top: 0.2rem;
    font-family: "Barlow Condensed", sans-serif;
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    line-height: 0.95;
    font-weight: 600;
    color: var(--stage-red-soft);
}

.poster-meta {
    margin-top: 0.55rem;
    font-family: "Barlow Condensed", sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: clamp(1.1rem, 2.8vw, 1.5rem);
    font-weight: 700;
    color: var(--stage-red-dark);
}

.info-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
    gap: 0.5rem;
    padding: 1rem 2rem 1.2rem;
    border-top: 1px solid var(--poster-line);
}

.info-btn {
    appearance: none;
    border: 1px solid #be123f;
    color: #9b1234;
    background: rgba(253, 253, 253, 0.92);
    font-family: "Barlow Condensed", sans-serif;
    width: 100%;
    font-size: 1.14rem;
    letter-spacing: 0.06em;
    line-height: 1;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.62rem 0.7rem;
    text-align: center;
    cursor: pointer;
    transition: background-color 120ms ease, color 120ms ease, transform 120ms ease;
}

.info-btn:hover {
    transform: translateY(-1px);
}

.info-btn.is-active {
    background: var(--stage-red);
    color: #fff;
}

.info-strip span {
    border: 1px solid #be123f;
    color: #9b1234;
    background: #fdfdfd;
    font-size: 0.72rem;
    letter-spacing: 0.07em;
    line-height: 1;
    font-weight: 600;
    padding: 0.34rem 0.5rem;
}

.event-band {
    display: grid;
    grid-template-columns: 205px minmax(0, 1fr);
    background: var(--stage-red);
    color: #fff;
    margin: 0 2rem;
}

.event-band__date,
.event-band__city {
    padding: 1.15rem 1.15rem 1rem;
}

.event-band__date {
    border-right: 1px solid rgba(255, 255, 255, 0.18);
}

.event-label {
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.74rem;
    opacity: 0.8;
    margin-bottom: 0.45rem;
}

.event-band strong {
    display: block;
    font-family: "Barlow Condensed", sans-serif;
    font-size: clamp(2.4rem, 7vw, 4rem);
    line-height: 0.9;
    letter-spacing: 0.02em;
}

.event-month {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.96rem;
    letter-spacing: 0.12em;
}

.event-address {
    display: block;
    margin-top: 0.45rem;
    font-size: 0.86rem;
    line-height: 1.55;
    opacity: 0.82;
    letter-spacing: 0.01em;
    font-weight: 400;
}

.event-band__city {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-end;
    text-align: right;
}

.teaching-panel,
.content-panel,
.opening-panel,
.poster-footer {
    margin: 1.25rem 2rem 0;
}

.teaching-panel {
    padding: 1.15rem 0 1rem 1.05rem;
    border-left: 4px solid var(--stage-red);
    background: rgba(255, 255, 255, 0.04);
}

.section-label {
    color: var(--stage-red-dark);
    text-transform: uppercase;
    letter-spacing: 0.28em;
    font-size: 0.8rem;
    margin-bottom: 0.55rem;
}

.teaching-main {
    font-size: 1.28rem;
    color: var(--stage-red-dark);
    font-weight: 700;
}

.teaching-secondary {
    margin-top: 0.5rem;
    color: var(--stage-red-dark);
    font-weight: 700;
}

.content-panel {
    border-top: 2px solid var(--stage-red-soft);
    border-bottom: 1px solid var(--poster-line);
    background: rgba(255, 255, 255, 0.04);
    padding: 2rem 1.25rem;
}

.content-panel h3 {
    font-size: 1.3rem;
    line-height: 1.35;
    margin-bottom: 0.45rem;
}

.content-byline {
    color: var(--stage-red-dark);
    font-size: 0.82rem;
    font-style: italic;
    margin-bottom: 1rem;
}

.content-panel p {
    font-size: 1.04rem;
    line-height: 1.72;
    margin-top: 0.85rem;
}

.content-panel p:first-of-type {
    margin-top: 0;
}

.tabs-panel {
    padding: 1.5rem 1.25rem;
}

.tabs-panel.tab-switching {
    animation: panelSlide 260ms ease;
}

.tab-page {
    display: none;
}

.tab-page.is-active {
    display: block;
}

.tab-page.is-active h3,
.tab-page.is-active p,
.tab-page.is-active li,
.tab-page.is-active .program-subtitle,
.tab-page.is-active .program-note {
    animation: tabTextReveal 220ms ease-out;
}

@keyframes tabTextReveal {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes panelSlide {
    from {
        transform: translateY(10px);
    }
    to {
        transform: translateY(0);
    }
}

.keiko-photo {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 4px;
    margin-top: 0.8rem;
    margin-bottom: 1rem;
    object-fit: cover;
}

.program-list {
    list-style: disc;
    margin-left: 1.2rem;
    margin-top: 0.7rem;
}

.program-list li {
    font-size: 1.03rem;
    line-height: 1.62;
    margin-top: 0.4rem;
}

.program-list li:first-child {

    .keiko-item {
        font-family: "Barlow Condensed", sans-serif;
        font-size: clamp(1.1rem, 2.8vw, 1.4rem);
        font-weight: 600;
        line-height: 1.45;
    }
    margin-top: 0;
}

.program-subtitle {
    margin-top: 1.1rem;
    font-weight: 700;
    color: var(--stage-red-dark);
    font-size: 1.08rem;
}

.program-subtitle:first-of-type {
    margin-top: 0.7rem;
}

.program-note {
    font-weight: 400;
    color: var(--muted);
    font-size: 0.95rem;
}

.program-info {
    margin-top: 0.9rem;
    font-style: italic;
    color: var(--muted);
    font-size: 0.98rem;
    line-height: 1.6;
}

.planning-image-wrap {
    margin-top: 0.8rem;
    border: 1px solid var(--poster-line);
    background: rgba(255, 255, 255, 0.45);
    padding: 0.35rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    cursor: grab;
}

.planning-pdf-link {
    display: block;
    position: relative;
    text-decoration: none;
}

.planning-pdf-link:hover .planning-pdf-image,
.planning-pdf-link:focus .planning-pdf-image {
    opacity: 0.88;
    outline: 2px solid var(--stage-red);
    outline-offset: 2px;
}

.planning-pdf-image {
    display: block;
    width: 100%;
    max-width: none;
    height: auto;
    cursor: pointer;
    transition: opacity 0.15s;
}

.planning-pdf-hint {
    display: block;
    text-align: center;
    font-size: 0.86rem;
    color: var(--muted);
    margin-top: 0.3rem;
    letter-spacing: 0.02em;
}

.form-wrap {
    margin-top: 1rem;
    overflow: hidden;
}

.form-wrap iframe {
    display: block;
    width: 100%;
    border: none;
}

.programme-title {
    font-family: "Barlow Condensed", sans-serif;
    font-size: 1.62rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1.1rem;
    color: var(--ink);
}

.programme-text {
    line-height: 1.74;
    margin-top: 0.9rem;
    font-size: 1.06rem;
}

.programme-text:first-of-type {
    margin-top: 0;
}

.programme-text--indent {
    padding: 0.7rem 1.2rem;
    border-left: 2px solid var(--poster-line);
    color: var(--muted);
}

.opening-panel {
    border: 1px solid var(--stage-red-soft);
    text-align: center;
    padding: 1.5rem 1.3rem;
    background: rgba(255, 255, 255, 0.04);
}

.opening-panel .section-label {
    margin-bottom: 0.65rem;
}

.poster-footer {
    text-align: center;
    border-top: 1px solid var(--stage-red-soft);
    padding: 1.8rem 1.25rem 2rem;
}

.footer-title {
    color: var(--stage-red-dark);
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.footer-site-link {
    margin-top: 0.6rem;
}

.footer-site-link a {
    color: #0b63c9;
    font-weight: 700;
    text-decoration: none;
    border-bottom: 1px solid rgba(11, 99, 201, 0.45);
    transition: color 140ms ease, border-color 140ms ease;
}

.footer-site-link a:hover,
.footer-site-link a:focus-visible {
    color: #084ea3;
    border-color: #084ea3;
}

.footer-logo {
    width: 78px;
    height: 78px;
    margin-top: 1rem;
    object-fit: contain;
}

.footer-partner-logo {
    display: block;
    width: min(280px, calc(100% - 1rem));
    margin: 1rem auto 0;
    object-fit: contain;
}

@media (max-width: 760px) {
    .page-bg__image {
        background-size: 100% auto;
        background-position: center top;
    }

    .poster {
        width: 100%;
    }

    .poster-topbar {
        min-height: 72px;
    }

    .logo-small {
        width: 36px;
        height: 36px;
    }

    .poster-intro {
        grid-template-columns: 82px minmax(0, 1fr);
        gap: 0.9rem;
        padding: 1.45rem 1.2rem 1rem;
    }

    .poster-intro__kanji {
        min-height: 150px;
    }

    .info-strip,
    .teaching-panel,
    .content-panel,
    .opening-panel,
    .poster-footer {
        margin-left: 1.2rem;
        margin-right: 1.2rem;
    }

    .info-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.42rem;
        padding: 0.9rem 1.2rem 1rem;
    }

    .info-btn {
        font-size: 0.98rem;
        padding: 0.52rem 0.5rem;
        letter-spacing: 0.04em;
    }

    .event-band {
        grid-template-columns: 80px minmax(0, 1fr);
        margin: 0 1.2rem;
    }

    .event-band__date,
    .event-band__city {
        padding: 0.62rem 0.68rem;
    }

    .event-band__date {
        border-right: 1px solid rgba(255, 255, 255, 0.18);
        border-bottom: 0;
    }

    .event-band__city {
        align-items: flex-start;
        text-align: left;
    }

    .event-band__date .event-label,
    .event-band__date .event-month {
        font-size: 0.52rem;
        letter-spacing: 0.08em;
    }

    .event-band__date strong {
        font-size: clamp(1.7rem, 7vw, 2.1rem);
        line-height: 0.9;
    }

    .event-band__city .event-label {
        font-size: 0.66rem;
        letter-spacing: 0.14em;
        margin-bottom: 0.16rem;
    }

    .event-band__city strong {
        font-size: clamp(1.82rem, 8.4vw, 2.5rem);
        line-height: 0.9;
    }

    .event-address {
        margin-top: 0.1rem;
        font-size: 0.72rem;
        line-height: 1.26;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .event-address br {
        display: none;
    }

    .event-month {
        margin-top: 0.12rem;
    }

    .teaching-main {
        font-size: 1.1rem;
    }

    .planning-image-wrap {
        margin-top: 0.7rem;
        padding: 0.25rem;
    }
}